CN1101864C - Heater for an advancing yarn - Google Patents

Abstract

The invention relates to a heater for a moving thermoplastic fibre which is passed along a heated surface over range of the annular segments (2). The heat flow to the fibre can be controlled by modifying the geometrical heat-transfer parameters.

Description

The heater that is used for advancing yarn

The present invention relates to be used for heating the heater of the thermoplastic fibre of advancing.

This class heater is disclosed by the EP412429 document.Its shortcoming is that the curvature of fiber channel is be scheduled to unmodifiable, and it has determined the distance of the fiber and the area of heating surface simultaneously.

This class heater can use on false twist crimping machine.

Yet, also can consider to be applied in different occasions.

The false twist crimping machine that is used to heat the heater place of the thermoplastic fibre (synthetic thread fiber) of advancing comprises generally that be heated to a certain temperature elongated led machine, fiber is advanced along this machine of leading.

In order to stretch synthetic continuous fibre and make its heat setting, a kind of heating tube of in the DE-AS1303384 document, being introduced be a sharp change helix shape fiber institute around.At the fiber outlet end, heating tube is equipped with a flange that prevents from along the circumferential direction to move.

As the thermoplastic of fiber at first polyamide (PA6 PA6.6) or polyethylene terephthalate, but is not limited to these materials.

The purpose of this invention is to provide a kind of fiber heater, this device assembling is simple, can change the curvature of fiber channel in very wide scope, and, to every fiber channel, fiber channel have a few, guarantee fiber and surperficial distance, this distance is irrelevant with curvature selected.

For realizing this purpose, the present invention proposes to be used to heat a kind of heater of thermoplastic fibre of advancing, and wherein fiber is advanced in the ridged part scope on being configured in the area of heating surface along being heated the surface and being separated by with this area of heating surface, it is characterized in that,

The area of heating surface is the shell of a heating tube, this area of heating surface with vertical direction of intersecting on be curved;

Ridged partly is to utilize ring to cut body to form, and ring cuts body and is installed on the heating tube and extends in the scope of the part periphery of heating tube at least; And

Initial sum end configuration fibre guide element at heating tube, the fibre guide element is along the circumferencial direction position skew each other of heating tube, driving fiber by means of it advances by the screw line of sharp change along heating tube, the appearance profile that cuts body with ring contacts, but does not contact with the heating tube shell.

Another kind according to the present invention is used to heat a kind of heater of thermoplastic fibre of advancing, wherein the ridged that is configured on the area of heating surface along the heated upper surface of bending and the ground warp of being separated by with it partly guides fiber, it is characterized in that, ridged partly utilizes several die cavitys that are located in the area of heating surface to form, the ridged part has a length that limits and follows arrangement each other along the fiber direct of travel, the ridged that keeps between two axial adjacent die cavitys partly is used to guide fiber, metering depth preferably at 0.1mm between the 5mm, be preferably in 0.5mm between the 3mm.

Another kind according to the present invention is used to heat a kind of heater of thermoplastic fibre of advancing, wherein the ridged that is configured on the area of heating surface along the heated upper surface of bending and the ground warp of being separated by with it partly guides fiber, it is characterized in that, ridged part with respect to the height of the area of heating surface at 0.1mm between the 5mm, preferably at 0.5mm between the 3mm, and preferably utilize several die cavitys that are located in the area of heating surface to form, and the ridged part has a length that limits and follows arrangement each other along the fiber direct of travel, between two axial adjacent holes, the ridged of reservation partly is used to guide fiber.

Another kind according to the present invention is used to heat a kind of heater of thermoplastic fibre of advancing, wherein the ridged that is configured on the area of heating surface along the heated upper surface of bending and the ground warp of being separated by with it partly guides fiber, it is characterized in that, the sleeve of the plate-shaped consistent with the shape of heating upper surface is tightened on the heating upper surface, and the ridged part is formed by bulge, and this bulge is spaced from each other the ground adjoining land vertically and arranges.

Another kind according to the present invention is used to heat a kind of heater of thermoplastic fibre of advancing, wherein each ridged that is configured on the area of heating surface along the heated upper surface of bending and the ground warp of being separated by with it partly guides fiber, it is characterized in that, the sleeve of the plate-shaped consistent with the heating upper surface is tightened on the upper surface of heating, and each ridged part is by being located in the sleeve wall, alignment arrangements and the groove that separates each other constitute in succession vertically, each groove has a length that limits and follows arrangement each other along the direct of travel of fiber, leaves as ring between two grooves adjacent on axially and cuts the ridged part of body to fibre guide.

And, also the present invention is proposed to improve, enable different application scenarios, influence improves the heat transmission.

This heater is installed in the arrival end of fiber channel and the fibre guide element of the port of export by adjustment, enable to select along the circumferential direction the screw line slope and the curvature of fiber channel, pass through according to this slope fiber each ring along heating tube.Though in other known heater of having introduced, transmission has decisive influence to the curvature of fiber channel to heat, is not such situation in the present invention.Here, the heat transmission only is decided by the temperature and the height of ring more than pipe of heating tube, the slope of screw line is the curvature and the winding angle of fiber channel, it can be selected voluntarily and not influence heat transmission, when making fiber with level and smooth stable manner row, and also have, in false twist crimping machine fiber is applied the effect of being twined and enable in being exposed to the fibre length regional extent of heater, the transmission of fiber is not hindered.

Therefore, accurately regulate temperature and also become possibility.Because the curvature of fiber channel does not influence the heat transmission, fiber temperature (referring to above-mentioned) except the height of ring only depends on the temperature and the length of pipe.Length and winding angle are independent of each other.Therefore, length can be selected like this, so that can make the plumber make the auto purification temperature of temperature range corresponding to the area of heating surface, more than 300 ℃.

The fibre guide element respectively before neck in or lag behind heating tube of the present invention configuration.Two fibre guide elements offset with respect to each along the circumferencial direction of heating tube, make fiber advance along the screw line of a sharp change in the heating tube scope.Best, heating tube leads directly to.Heating tube curvature need not considered, because the curvature of as-spun fibre can be scheduled to as mentioned above, realizes by regulating the fibre guide element.

Heating tube heats from the inboard.Preferably realize in such a way,, even in the partial-length scope of heating tube, extend through less at resistance heater of the inside of heating tube installing.In this case, in order for example to strengthen heating in the entrance area in certain zone, can severally connect along the length range installing of heating tube, controllable resistance heater.This just enables in the heating tube length range, regulates different temperature.This just realizes and has fully guaranteed that fiber is advanced according to a certain point-device angle direction that the body with heating tube forms along heating tube and ring.Consider that heating tube can be heated to temperature up to more than 350 ℃, only need very short heating tube length.Therefore, with respect to the circumference and the length of heating tube, the total winding angle of fiber also is less relatively.Preferably its total value is less than 180 ℃.Therefore, in any case in this zone, heating tube always constitutes with cylindrical form of fracture, it constitutes the advantage that is had by cylindrical form and is, fiber is in its whole contact length scopes, with identical exposure parameter, particularly identical helical angle, rest on the outer surface of ring, yet, also have the structure of other tubular, for example the heating-pipe structure of elliptical shape also is possible, particularly ought be hereinafter will further introduce, along in the fiber channel zone of heating tube length range, the height of ring is not under the constant situation.This part of heating tube, towards and leave fiber channel, can constitute by any desirable form.The symmetrical structure of tubular heating tube, particularly the cylindrical structural of tubular heating tube is used always, and especially working as along the circumference and/or the uniform heat distribution of length of heating tube is under the very important situation.

In any case ring all will extend along the circumferential zones of heating tube, and heating tube just closes on as-spun fibre.But they do not need to extend the whole circumference face that spreads all over heating tube, therefore state within the scope of the invention to be " ring cuts body ".When the extension of ring was only in the partial circle side face scope at heating tube, this ring was contacted by fiber, may produce good heat and transmit.In this case, heating tube can be topped with a heat insulation layer in its flat side outwardly.Each ring may further reduce along the partial circle side face of its extension and is that press the trend of fiber channel, each ring in succession is relativity shift each other, and promptly they press helix shape generation relativity shift each other according to the trend of as-spun fibre.In any case it is the practice commonly used that each ring extends to a certain angle along circumferencial direction, makes it possible to regulate the slope of as-spun fibre in advance in desirable zone.

As mentioned above, the temperature range that makes heater of the present invention be operated in auto purification is useful especially.This means that it is enough high that temperature is wanted, make when thermoplastic fibre is heat-treated, to adhere to heater or the ridged cleaved and oxidation of polyester residue partly.After this, need carry out slight mechanical type cleaning at most.More than 300 ℃, also may reach 800 ℃ to polyester and this temperature of nylon.The kind of polymer and the thickness degree of fiber are not only depended in the temperature restriction that produces infringement, but also depend on the length of heater, selected screw line parameter and other heat treatment parameter.

In each all extensible plane normal that is in heating tube of ring of the present invention.Therefore, they are rings of saying by on this speech stricti jurise.

Yet, each the ring also relatively circumferencial direction tilt.For example, the ring of inclination can be with one group of plane-parallel form expansion.In this case, its advantage is, with respect to being curved spiral fiber channel, gradient of each ring can be selected, and makes fiber in may the shortest length range, and fiber contacts with the outer surface of ring.The gradient that this means ring should be selected, and makes it opposite with the slope variation of fiber channel, and fiber contacts each ring all by 90 ° or by carrying out with the very little angle of 90 ° of deviations.

According to the heater that the invention described above proposes, it is further characterized in that, ring cut body with the flange of spiral surrounding calandria, be that the form of screw line constitutes.In this embodiment, gradient is preferably selected on the contrary with the slope of fiber channel, and all the body with heating tube is relevant for the two.The result will realize that fiber may contact with ring in the shortest length range.Spiral ridged part also claims to slide screw line, for example, slides along cylindrical heating tube with the form of screw line, when ridged can be exchanged during partly by abrasion.The replacement hand operated of the line of lap wound is easy, because it is smooth cleaning, when using spring wire, because its elastic contractile force, it is abutted against on the heating tube, radially broaden when compression in the vertical is enough strong, it is released that this spring wire just can break away from this pipe.

In known heater, fibre guide is by means of the ridged part of arranging along quite hot surface, the shortcoming that is had is, the ridged of this surface and a part partly is under the necessary auto purification temperature, the ridged part is cooled off significantly owing to the fiber of advancing, make its temperature descend, be lower than the scope of auto purification temperature.Utilize further feature of the present invention, can avoid this shortcoming.According to the present invention, it is further characterized in that, ring cuts body and utilizes several die cavitys to form, it is goed deep into the area of heating surface by machined, ring cuts body along the circumferential direction, at least in the scope of the part periphery of heating tube, extend, and have a length that limits vertically and follow arrangement each other, between two axial adjacent die cavitys, leave one and be used as ridged part fibre guide, cut body as ring.According to the present invention, its further feature also is, the degree of depth of die cavity preferably at 0.1mm between the 5mm, be preferably in 0.5mm between the 3mm.In this embodiment, fiber is partly formed by each groove that forms in the area of heating surface of heating tube along the ridged of its process, between groove, leaves a ridged part vertically respectively, and it along the circumferential direction extends or tilts.These grooves can along the circumferential direction extend, and spread all over whole circumference, occur with groove in this case.Yet they also can extend in the partial circle side face of heating tube, and in other words, this partial circle provides and is used for the spiral fiber passage.In this case, each groove in succession preferably disposes according to the trend offset alignment of screw line equally.

Therefore, in this embodiment, each ring can dispose in plane normal, or extends in one group of plane parallel to each other that tilts or a screw line on heating tube extends.In this case, the front is done and is introduced the direction that is applicable to screw line.According to another kind of heater of the present invention, it is partly to guide fiber along the ridged that the heated upper surface of bending and the ground warp of being separated by with it are configured on the area of heating surface, and the direction that the area of heating surface that this structure provided itself is advanced along fiber is curved.

This embodiment makes from heating and produces good heat transmission to the contact surface of ring, makes it possible to guarantee that contact surface always is heated to the auto purification temperature.

It has surprisingly been found that, the danger that burns out has not existed concerning fiber, even under the situation of high temperature and fine fibre, this is benefited when further proposing parameter, the height of ring or the degree of depth of respective slot are chosen in 0.1-5 (mm), preferably this lower limit of 0.5-3 (mm) be determined in advance be radius, fiber according to heating tube be directed to along the slope of screw line, the perhaps curvature of the corresponding area of heating surface and according in succession each ring/ridged interval between partly, and should be selected, make fiber not contact with the area of heating surface itself.

Should emphasize two facts below: the one ridged part and the area of heating surface are made of one, thereby have good thermo-contact, and its two ridgeds part only has small height with respect to the area of heating surface; Each individualism is comprehensive with both, has all reflected the obvious improvement that surpasses the prior art present situation.These improvement can be suitable for being applied in the high temperature heater (HTH) of any pattern, as long as wherein fiber is to advance with the form of the as-spun fibre of bending along the area of heating surface.

When synthetic fiber were heat-treated, particularly to having the synthetic fiber of less fineness degree (number), the wearing and tearing on fibre guide surface were played the part of crucial role to the quality of finished product.This point is specially adapted to false twisting machine, and therein, fiber is in the zone of heater, around the curve rotation of himself.For fear of one-sided wearing and tearing, it may be useful making the heating tube of this heater be suitable for rotating.Therefore, may be enduringly or some time interval rotation heating tube, make it to form new fiber channel.

Yet because the preferred resistance heater that uses, this rotation may only limit in the limited scope.Therefore utilize and provide a kind of remedial further improvement of the present invention.

Between ring and heating tube or corresponding relative rotation between sleeve pipe and heating tube, have only naturally when heating tube be made into be only when cylindrical possible.Yet when at first considering that the ring that weares and teares is interchangeable, this point is not important.

According to the present invention, it is further characterized in that ring cuts body and utilizes the loop configuration element to form, and its inboard profile is corresponding to the appearance profile of heating tube, has the tight fit tolerance, it is set on the heating tube, axially uses spacer element spaced apart, utilizes the thickness of structural detail, it is the difference of exradius and interior radius of circle, it is outstanding from the area of heating surface to make ring cut body, and its numerical value is 0.1mm at least, but is not more than 5mm.In this structure each ring can be used as that single structural detail constitutes and cover through on the heating tube.In this case, the internal diameter of ring equals the external diameter of heating tube substantially, makes to have good heat conduction contact between heating tube and ring.

Can be further improved above-mentioned heater, it is further characterized in that, the loop configuration element is housed, they inner peripheral surface and outer circumference surface between it has a radially notch, its width is the diameter that equals heating tube at least, notch is axially gone up the proximity structure element, best, along the circumference of heating tube, press the trend of screw line, be offset a certain fixed angle value, this screw line fiber is advanced along heating tube.After this improvement, can single replacement respectively encircle, fibre guide part of each ring is only extended in the part periphery scope of heating tube.Above-mentioned further improvement enables also to realize that the whole circumference face all is to can be used for fiber to advance.According to one embodiment of present invention, it is further characterized in that, each structural detail of being adorned has an axially extended pilot pin as spacer element in the one side, has groove in its other side, utilize the pilot pin that cooperatively interacts and the groove of axially adjacent structural detail, preferably with respect to notch radially, circumferencial direction along heating tube, through a fixing angle value skew, make the radially notch of each structural detail in succession arrange along a screw line basically corresponding to the screw line of fiber.According to this embodiment, it can along the circumferential direction encircle a ring from one and always adjust according to constant skew.According to another embodiment of the invention, it is further characterized in that two spacer element net palisades of axially going up contiguous structural detail match, so as to constituting the net grid, with the concentric circle of heating tube on, with fixing angular displacement many die cavitys are set on each structural detail.Allow to select this skew according to this embodiment.

In order to guarantee that between ring and heating tube along the contact of the direct heat of fiber contact side, a Spring Card can slide between the side of notch, its middle body flexibly abuts on the shell of heating tube and with ring and is clamped on the heating tube.Like this, each ring all utilizes a Spring Card to compress by pasting heating tube.This Spring Card is on the one hand by pasting the sidewall of notch, and with part wherein by being attached on the heating tube.

Under the situation of overlapping ridged part or ring, should give special priority for, the height of its relative area of heating surface is chosen in 0.1mm between the 5mm, is preferably in 0.5mm between the 3mm.Equally in this case, its lower limit be determined in advance be radius, fiber according to heating tube advance along the slope of screw line, or the curvature of the corresponding area of heating surface, and according to the interval between each ring/ridged part in succession, and should select, make fiber not contact with the area of heating surface itself.

According to one embodiment of the invention, it is further characterized in that, the sleeve of plate-shaped that will be consistent with the area of heating surface of heating tube stretches tight on the area of heating surface, and ring cuts body and is formed by bulge, its vertically, be spaced from each other the adjoining land alignment arrangements on sleeve, this sleeve is preferably rotatable along the circumferencial direction of heating tube.Like this, the predetermined part periphery as fiber channel of heating tube is covered by skim (sleeve) at least, the surface configuration close fit of itself and heating tube, and form a kind of heat conduction closely with the surface of heating tube and contact.Should emphasize clearly that sleeve need not to extend in the scope of the whole circumference face of heating tube, but, only need in the heating tube periphery scope partly of fiber channel (area of heating surface), extending.

Sleeve also can be made of the pipe with thin-walled.In this case, the outer lateral section of the interior lateral section of sleeve and heating tube is a close fit.Make when cylindrical when heating tube, sleeve is also preferentially done cylindrical tube, because this has just guaranteed the rotary steering of sleeve.

Form some rings on the shell of sleeve, it has above-mentioned shape.Best, sleeve is compressed on several plane normal, makes annular ridges form outwardly.Therefore, the gap of hollow forms, and it may hinder the heat transmission.On the other hand, application examples such as welding method are connected to whole ring and try to achieve good heat conduction on the sleeve of a thin-walled, see not only expensive but also bothersome from the viewpoint of making.In one embodiment of the invention, these difficulties can be avoided, it is further characterized in that, extend in the scope of the area of heating surface with the sleeve of the corresponding plate-shaped of the area of heating surface of heating tube, and, each ring cuts body and is formed by groove, this groove forms in the wall of sleeve and alignment arrangements at each interval vertically, this groove along the circumferential direction extends in the part circumference range of heating tube at least, and has a length that limits vertically, follow arrangement each other, ridged between two grooves adjacent on axially partly cuts body to fibre guide as ring, and the thickness of slab value of sleeve is 0.1mm at least, but is no more than 5mm.According to this embodiment, sleeve or housing, its internal diameter is corresponding to the external diameter of heating tube, and its shell has the groove of same shape, and each groove graticule vertically extends in proper order, and this sleeve is along the heating tube slippage with essentially smooth surface.Best, each groove of arranging aligned identical is relative on diametric(al) in sleeve, and preferably their configurations are near the tactic row of the difform groove of tool.If may, each row axially parallel is along stretching.Each identical between the groove in succession in delegation ridged part is extended along circumference range corresponding to the shape of each groove.Hub being mounted prevents axial displacement on heating tube, but can rotate.On the one hand, the benefit that it brings is, periodically or gently sleeve rotated on pipe, makes it the contact point that guide fiber always passes through the cleaning of ridged part.In addition on the one hand, constituting fibers owing to the ridged part is different can be heated in very wide temperature range.Because in sleeve, same ridged part or corresponding groove be relative on diametric(al) or repeat by a certain angular distance, and their form the passage of two or plurality of fibers contact.In addition, extend between each row, what importance is essence of the present invention do not had along the part of ridged longitudinally of sleeve.

In this case, it is a flat board that sleeve launches, and some grooves are opened at dull and stereotyped upper edge axis direction and arranged one by one.The processed shaping of these grooves makes to keep a ridged part that between each axially adjacent groove wherein circumferencial direction extends.In this embodiment, ridged partly need not to be in the plane normal of heating tube, but can tilt with respect to plane normal.Also have, need not to make the ridged part to extend along the whole circumference face.Would rather wish that sleeve constitutes by one and extends in the whole length range of heating tube, thereby each groove only extends in the scope of part periphery/partial width respectively equally.

Point out that as top the circlet height is not only possible, and for making the heat transmission all even for the heat transmission of good control to fiber, this also is top-priority.Because this reason also especially preferentially proposes here, and thickness of slab is chosen in 0.1mm between the 5mm, is preferably in 0.5mm between the 3mm, simultaneously with reference to above-mentioned restrictive condition.

Above once mentioned, allowed to change the interval of each ring in the heating tube length range, hereinafter will introduce in detail.In order to make this embodiment also use sleeve, suggestion makes sleeve be made up of a plurality of interconnective section adjustable institutes, and in this embodiment, sleeve is divided into single axial direction part, and it is suitable for slipping into each other with the form of telescope sleeve.Each section has a ring at its periphery.Because each section slips into more or less each other, can change the interval of ring.

On the flat board that covers the area of heating surface,, and, in any heater, provide above-mentioned advantage with the flat board formation ridged part that has groove as the ridged configuration partly of guide fiber.

Just as noted earlier, the fibre guide arrangements of components is at Liang Chu, the arrival end of heating tube and its port of export.Two fibre guide elements are offset toward each other along the circumferencial direction of heating tube, make fiber go in ring into the form of sharp change screw line along each.The slope of screw line and the radius of ring outer surface have determined the curvature of fiber channel.The curvature of fiber channel also has decisive significance to the stability of fiber channel.In order to satisfy the fiber channel stability requirement, other parameter that proposes to influence fiber channel stability (for example, fiber tension, in the degree that is twined of false twist crimping process), each fibre guide element and heating tube configuration are suitable for moving and the location along the circumferencial direction of heating tube is respect to one another.

As noted above, from the viewpoint of heat enginnering, symmetry heating heating tube is favourable.In one embodiment of the invention, it is further characterized in that several fibers are advanced in the area of heating surface scope of heating tube, and each fiber channel is respectively equipped with an inlet fibre guide element and an outlet fibre guide element.Viewpoint from heat enginnering, can obtain the very excellent embodiment of heating tube by this embodiment so, it makes fiber reel around heating tube by the one-way spiral line, as long as the winding angle of every fiber in such a way may be along the fiber of each heating tube heating more than two less than 180 °.Nature, this makes the aspect of passing of equipment complexity and particularly fiber.This point particular importance, because for adiabatic purpose, must be with a lagging casing around heater, it only allows a limited passage to lead to heating tube.Such lagging casing only leaves a narrow as far as possible opening preferably around whole heating tube, and radially notch extends along the body of heater or along the direction that parallels with the body of heating tube.The structure of such lagging casing makes can wear youngster's root fiber, yet only limit to a limited scope, according to one embodiment of present invention, it is further characterized in that, two fibers are advanced in the heating tube scope, have opposite coiling direction, along the circumferential direction change distance at interval by one, winding angle is less than 180 °.In this embodiment, two fibers pass with opposite slope direction along heating tube, make to pass this two fibers, can not meet difficulty in any operation.In this case, every as-spun fibre is all adorned a fibre guide element at entrance and exit end place.The fibre guide element is in a side, for example at heating tube port of export place, closely place each other, and be in substantially in the sagittal plane of threading notch, at two fibre guide elements of an other side, in such cases, at the heating tube arrival end, then be in the operating position, a good distance off is symmetrical in the sagittal plane of threading notch.In order to pass a fiber, they can suitably be adjusted between the sagittal plane of threading notch and operating position.Therefore, every fiber in the sagittal plane of threading notch can be penetrated in the fibre guide element of the arrival end of heating tube and the port of export, after this, one in two fibre guide elements is along the circumferential direction moved, whereby in the course of the work, drive this fiber along its passage.In the operation of any expection, two fibers can pass in such a way one by one afterwards.

Be used for the heater of thermoplastic fibre, in fact the temperature of the area of heating surface will heat the target temperature height that reaches than fiber, a special problem, and this target temperature must reach, but does not surpass.In order to realize this point, only the temperature of the area of heating surface and fiber speed are adjustable parameters, and fiber thickness degree and heater length are constant.

In false twist crimping machine, be very important to quality of fiber and formation to the optimization of the heating effect of fiber.For this reason, the contact length that proposes the fibre guide element is adjustable, makes whereby can realize also that for each desirable fiber speed and fibre diameter (number) the best of heating effect regulates.In order to realize that this point proposes the formation scheme of a heater and fibre guide element, makes that this fibre guide element is interchangeable.

In order to make heating effect reach best and to adapt to various fiber speed and number, also preferential the proposition particularly in the scope of control zone, regulated the contact length of fiber guidance and the ratio (contact length) of the noncontact length of heater.In this case, for example, heater is got tubular basically.Therefore, can provide several ridged part/rings to cut body on the periphery of heating tube, it is along the circumferential direction widened.These ridgeds part can the adjoining land alignment arrangements on periphery, one with another skew.Therefore realize that spirality centers on the fiber that this pipe reels and contacting each ridged part one by one in some zones like this, each ridged partly has identical contact length basically in this zone.

According to the present invention, it is further characterized in that, each ring cuts body along the circumferential direction to be changed at the width (contact length) that has in may contact range with fiber; Heating tube and each fibre guide element (inlet fibre guide element, outlet fibre guide element) of partly being provided with for the fiber entry of each fiber heated zones part and fiber outlet but the guiding fiber advancing on each section ring body and relativity shift and location like this on the circumferencial direction at heating tube each other along a screw line, make that it is adjustable cutting contact ratio on the body (cutting the merchant of fiber contact length and the noncontact length of a ring section body of following on the body at ring) at ring.

Further feature of the present invention also is, ridged partly comprise one may with the zone of relative fiber direct of travel cross directional variations in the zone of fiber contact, (the fibre guide element enters the mouth for heater and the fibre guide element that partly is provided with for the fiber entry of fiber heating region part and fiber outlet, outlet fibre guide element) the guiding fiber is advanced on the ridged part, and can move mutually and can so locate transverse to the fiber direct of travel, make that promptly at the contact ratio on the ridged part (the fiber contact length on a ridged part with follow the merchant of this ridged part noncontact length) be adjustable.

Further feature of the present invention also is, each ring cuts body may along the circumferential direction changed with the height that has in the scope that fiber contacts, heating tube and introduce each fibre guide element (inlet fibre guide element and outlet fibre guide element) that part and fiber outlet partly be provided with for each fiber heated zones fiber and in each ring cuts the scope of body, guide fiber along a screw line, but they are along heating tube and circumferencial direction relative displacement and location each other.

Further feature of the present invention also is, ridged partly comprise one may with the zone of relative fiber direct of travel cross directional variations in the zone of fiber contact, heater and fibre guide element inlet (fibre guide element and outlet fibre guide element 9) guiding fiber of partly being provided with for the fiber entry of fiber heating region part and fiber outlet are advanced on partly at ridged, and can move also mutually and can so locate transverse to the fiber direct of travel, make that promptly strand is adjustable apart from the distance of the upper surface of heating on the ridged part.In the further improvement project of the invention described above, the further parameter of adjusting is proposed, enable to influence heat transmission to fiber, therefore influence the target temperature of fiber.This parameter is along the area of heating surface, and the degree of depth of the ratio of the contact length of fiber channel and noncontact length and the ring more than the area of heating surface/ridged part height or corresponding groove forms each ring or corresponding ridged part by this groove.In various embodiments of the present invention, the height of contact ratio and/or the ring on the periphery of heating tube/ridged part or correspondence all change with the width of the area of heating surface that fiber channel intersects.

Therefore, each ring working width, its numerical value of intersecting with the fiber direct of travel of cutting that a body/ridged part had is the several times of fibre diameter.Along the direction that fiber is advanced, the contact length that the ring when crossing over working width cuts body/ridged part is different, and fiber channel can be adjusted with respect to the working width of ring section body/ridged part.

Fiber channel is with respect to the periphery of heating tube, or the ring of configuration on it/ridged part or can move along the sleeve of its extension.In order to realize this point, adjusted in concert entrance and exit fibre guide element along the circumferential direction in all embodiment of the present invention.Yet, also may keep the invariant position of fibre guide element, and replace along the circumferential direction rotate heating tube or put thereon ring or along the sleeve of its slip.In all these examples, all be along the relative turn fiber channel of heating tube circumferencial direction.This relatively moving can realize with hand operated, can be continuously or stepping ground change its height and width.

This advantage that relatively moves is that it very directly influences the heat transmission, thereby also just directly influences the target temperature of fiber.Therefore, mutually adjust upper surface and the inlet fibre guide element and the outlet fibre guide element of heating according to the fiber temperature that detects at the heater outlet end, promptly by change and regulate contact ratio or the fiber and the area of heating surface distance and with the fiber temperature substantial constant maintain on the desired rated value.Like this, become possibility first, measure the fiber temperature advance continuously, carry out above-mentioned control, make target temperature keep the constant predetermined desired numerical value that maintains by the fiber that relatively moves of the periphery along heating tube.

This means, be equipped with in employing under the situation of heater of sleeve, on the width that intersects with the fiber direct of travel, increase or reduce the groove number.This scheme also is possible and preferred, in sleeve, having difform groove extends with fiber channel lateral cross ground abreast along the circumferencial direction of heating tube, make ring cut body/ridged and partly comprise a lot of sections, each section all has constant radius/constant height, perhaps ring cuts the width of body/ridged part and/or highly only one in the fiber thermal treatment zone is changed, and ring section body/ridge cuts the width of part and/or highly the different fiber thermals treatment zone changed is different.This just enables to realize, not only every fiber heat is supplied with to change, and the heat of several fibers of advancing simultaneously along heater is supplied with also is variation relatively that the phase coadaptation is to the requirement of target temperature.

In the false twist crimping process, therefore actual fiber temperature also is that target temperature has special influence to quality of fiber, concerning fiber quality, finds that fiber tension is an important symbol, and this fiber tension detects in the downstream of friction false twist unit.Therefore, also should be able to controlling fiber tension force, particularly between friction false twist unit and its transmission system downstream by the fiber tension of continuous detecting, by the fiber channel that relatively moves of the circumferencial direction along heating tube, make that detected value and the deviation between the desired value at fiber tension is no more than a certain permissible value.

Can preferentially be applied in all heaters in the same way according to the present invention recited above.

The appearance of several fiber channels that extend in the heating tube scope makes the formation of ring produce new problem, along with circumferencial direction along heating tube, relatively will be in the identical variation that produces expection aspect the degree of depth of height that encircles or respective slot with two fiber channels of moved further.Accessory rights requires to draw suitable actual example in 23 and 24.

According to the present invention, be further characterized in that ring cuts the appearance profile of body, is oval-shaped at least basically, oval center and is preferably on the oval relative point on the axis of heating tube, drives two fibers with same inclination angle and advances.

According to the present invention, further feature also is, on the corresponding point of ellipse, drives two fibers with same inclination angle and advances.

According to the present invention, further feature also is, it is circular that ring cuts body and ring cuts the setting of the relative heating tube eccentric axis of body.

According to the present invention, further feature also is, two fibers along this side and the opposite side of the axial plane of heating tube, are advanced according to rightabout inclination angle respectively, each ring cuts being centered close on this plane of body, axially goes up adjacent ring and cuts body and be offset 180 ° each other.When fiber along a heater, when heating tube particularly of the present invention was advanced, two basic functions will realize: at the entrance area of fiber channel, must be to the necessary heat of fiber transmission.At exit region, it evenly is important at the cross section of fiber heat distribution being become, so that itself reach target temperature in the whole cross section of fiber.These two different functions also cause the different longitudinal component at heating tube, and the intensity of heat transmission may be different.According to the present invention, be further characterized in that heating tube has contact ratio and the height that different rings cuts body along the thermal treatment zone that its axial length is provided with.Like this, form differently and realize this point by contact ratio and/or ring height.

It is very important making the scope that all reaches target temperature, pipe range in the scope of the cross section of whole fiber, is introduced in the decline that the present invention uses.The part of pipe range is as the control section introduction, and it is mainly relevant with the heat transmission.The contact ratio is actually smaller at end sections, and perhaps corresponding ring is high, is exaggerated the corresponding numerical value that is higher than control section at end sections.

Particularly in, in the inlet region of heater, fiber only contacts very little with the fibre guide element or does not contact, and also is in this zone, and each fibre guide element is with big spacing distance configuration.Best, entrance area is only installed an inlet fibre guide element and an outlet fibre guide element, yet in fact top-priority is that inlet fibre guide element keeps not heating status.For this reason, propose inlet fibre guide element and keep not heating status basically, so that make thermoplastic be separated.Yet, to have the auto purification characteristic at the fibre guide element of outlet side.Therefore, preferably it directly is connected with the area of heating surface and is placed on the starting point of so-called " control section ".

Reach the temperature of its expection at the control section fiber.It is followed after the intake section of heater.Dispose several fibre guide elements at control section.As described in the above-mentioned EPA20412429 document, these fibre guide elements each other evenly at interval or change interval.

The employing of fibre guide element enables to guarantee to make fiber according to leading with the accurate distance that limits of the area of heating surface in control section.In order to guarantee not come in contact with the area of heating surface at the intake section fiber, further propose, between intake section and control section, install heater, according to a kind of like this mode, make distance at the intake section area of heating surface and fiber equal the several times of the distance of fiber channel and the area of heating surface in control section.

This configuration of fibre guide element enables to guarantee that the fibre guide element only is configured in such zone, and in this zone, a side is the fiber temperature of being concerned about, and is heter temperature at opposite side, all guarantees the realization auto purification.In this control zone, the temperature of heater preferably utilizes control system accurately to control.The accurate distance of the relative heater of fiber enables to guarantee that fiber is under predetermined desired temperature.At intake section, abandon accurate fibre guide, in order to distinguish the fiber input in the porch, the heating of fiber is to have big thermograde between heater and the fiber at this place, therefore, it is also impossible that accurate controlling fiber temperature neither needs.

Heating at the control zone fiber causes that at first the skin of fiber reaches desired temperatures.Yet need evenly be heated at the whole cross section of fiber.This target is reached and is, the control section back is a terminal part then, and in this part, the fibre guide element is once more according to bigger distance configuration, perhaps this fibre guide element not just.The area of heating surface for fear of fiber and heater comes in contact, and the distance between the fiber channel and the area of heating surface also should be the multiple of distance between fiber channel and the area of heating surface in the control zone here.This configuration of terminal part enables to guarantee, when having only seldom heat to be transmitted, can avoid loss, and in the whole cross section scope of fiber, the heat that is provided distributes evenly in control system.

At intake section, can allow the fibre length of very big non-bearing state, because it has been found that, at intake section, Fibrillated intensity is very little.Length 400mm is possible to 50mm.Yet this length should limit, and this is the consumption costs that is used to detect in order to limit, and desired preheating is to be to fiber to reaching in this detection.

In a word, terminal part is shorter than intake section.The length of terminal part is preferably limited to 300mm, and is preferably shorter.

As described, heater important use of the present invention field is comprised the false twist crimping process, especially for the false twist crimping process that draws bulk thermoplastic fibre, particularly polyester and nylon.Heating tube is not installed in the false twist crimping machine, and these facility have feeding system and the cooled region, the especially coldplate that are configured in the heater upstream side, friction element and in the transmission system in its downstream.In this process, a kind of do not draw or local orientation (P0Y) fiber is pulled out by a feed fibre bag feed and by feeding system.Fiber is advanced by heater and order process coldplate adjacent thereto, at last by a friction false twist unit then.Utilize an induction system with fiber pull out from the friction false twist unit and sequential volume around.Another heater and another feeding system can be placed on before the coiler device.Owing to the result of the rubbing action that is applied by the friction false twist unit, fiber along the circumferential direction is subjected to being twined effect, and fiber turns back to heater and and then engaging friction false twist unit from the friction false twist unit.

Fiber can 1000 meters of per minutes or higher speed by heater of the present invention, and can not produce any friction or problems of excessive heat.

Utilize the embodiment of overlapping ring or sleeve also can be provided at the advancing yarn downstream, so that obtain the auto purification effect of the rule of the fiber thermal treatment zone by the possibility of rotating the fiber thermal treatment zone sometime at interval.

Embodiments of the invention shown in the accompanying drawing are hereinafter introduced in detail.Wherein:

Fig. 1 is the top view of the element ring of heater shown in Figure 3;

Fig. 2 is a cutaway view along Fig. 3 center line II-II;

Fig. 3 is the side view of heater embodiment of the present invention;

Fig. 4 is the side view of another embodiment with ring of several less thickness;

Fig. 5-the 6th has the side view of the heater of spirality ring;

Fig. 7-8 is respectively axial cutaway view and the perspective view with embodiment of several thermals treatment zone;

Fig. 9 is the side view of the heater of ridged part contact length variation in a circumferential direction;

Figure 10-11 is respectively lateral perspective and the axial cutaway view of the embodiment of the height change of ridged part in a circumferential direction;

Figure 12 is that the contact length and the contact height of ridged part in a circumferential direction all changes

The side view of embodiment;

Figure 13 A-B is respectively top view and the front view with heater of two fiber channels;

Figure 14-18 is respectively that the height with ridged part is variable, the top view of the heater of geminal fibers passage and side view;

Figure 19 is the side view with heater of overlapping sleeve and each annular section;

Figure 20 is the side view with heater of a sleeve, geminal fibers passage;

Figure 21 A-B is respectively the perspective view of the heater of the front view of a sleeve and the sleeve with band difformity groove;

Figure 22 A-B represents to have the heater of scalable moving sleeve; And

Figure 23-24 is respectively the schematic diagram with false twist crimping machine of fiber tension and fiber temperature checkout gear.

Introduce below in the process of different embodiments of the invention, identical number is used to show not identical parts.

Institute's having heaters of being introduced all is made of pipe 1, hereinafter referred to as heating tube.It is straight-through cylindrical that this heating tube is.This pipe can constitute with the form of a revolving body, or is shaped with the segmentation of revolving body or the form of its section body, is obtained a fiber channel of advancing along a screw line, will further specify below.

Heating tube 1 portion within it holds the heating resistor 6 that one or several extends each other side by side.This resistance heated part extends through the total length of heater as an insert.In described embodiment, heating resistor extends through the total length of heating tube.Heating tube 1 is made of high-thermal conductive metal, steel for example, or be preferably albronze.It shown in the 6a power line.Should be pointed out that in fact described heater is encapsulated in the insulation shell, this housing have be used for radially notch that fiber passes and relatively heating tube form the circumference air gap.Fiber is just advanced in this circumference air gap.

Some ridged parts of arranged on heating tube 1.In the zone of fiber channel, the ridged part constitutes in the mode that ring cuts body, also describes as ring.

The figure side face that ring cuts body can be a sphere shape.On outwardly direction of ring, ring has fiber along sliding, antiwear characteristic, and promptly act on can be little of ignoring along the frictional force on its fiber that passes through for ring.The periphery of each ring is in order to provide guiding to fiber 7, and advance and do not have part 9 by inlet fibre guide element 8 and outlet fibre guide by the circumferential surface that cuts body along encircling for this fiber 7.Inlet fibre guide element 8 exports the circumferential locations skew of fibre guide element 9 along heating tube relatively.This just means the form coiling heating tube of fiber 7 with screw line, and its slope is decided by fibre guide element 8 and 9 circumferencial direction skew each other.This screw line curvature is decided by the radius that encircles, the length of heating tube or fibre guide element 8,9 axially spaced-apart separately, and the circumferential offset between them.The selection of these sizes make the radius of curvature of as-spun fibre at 5mm between the 25mm, be preferably in 10mm between the 25mm.Yet, should lay special stress on, fiber is that the shell of heating tube contacts with the area of heating surface never.Also to suitably select the height of the diameter of pipe, each ring on the heating tube shell and fiber advance along the slope of screw line.One of them director element is movable, and preferably around the axis of heating tube 1, another element is rotatable relatively, makes can change by the spacing that changes the screw line that is formed by fiber 7 along the passage of disk 2 advancing yarns.

Ring cuts body and can extend with respect to the whole circumference of heating tube as ring.This just makes it possible to utilize the whole circumference of heating tube, or for several fiber channels are provided or/and in order to move a fiber channel, makes it to reduce the wearing and tearing of each part of this periphery or be sticky with.

Each ring cut body should extend surpass at least also by spiral fiber a certain segment angle of topped periphery.Its all advantage is to make fiber to pass rapidly.In addition, when in succession each ring cuts trend that body press as-spun fibre along circumference and during the skew of position, for the wearing and tearing that reduce ring section body circumference each several part be sticky with, the as-spun fibre that relatively moves is possible in this case equally.

When in succession each ring cuts body position skew along the circumferential direction, each ring cuts body and has certain spiral pitch, along this screw line passage, fiber is advanced above the circumference of heating tube, this skew just makes it to reduce each ring and cuts body length along the circumferential direction, and this length is necessary to fibre guide.Adopt this mode, ring cuts body and becomes bulge on the area of heating surface.Yet the shortcoming that this shortening brought is, fiber is passed become very difficult, and the formation of fiber screw line is the distribution in succession that utilizes the bulge that is shortened, this screw line can not change again, and, when fiber channel is sticky with, no longer need to keep away other position of circumference.

Each ring cuts a body and all is in the plane normal of heating tube, promptly with the plane of heating tube intersect vertical axis in.Yet when also having other position can consider and when making viewpoint and be easy to realize, Fig. 4-6 and each embodiment of 20 and 21 should hereinafter will further introduce especially as a reference.In any case, cut body with each ring of fiber channel associated and should always be in one group of parallel plane.Each ring on the heating tube body cuts body and should not be in the plane normal, and promptly they intersect with body not according to 90 °, and it is necessary selecting the spiral pitch of fiber channel.It and each ring are anti-phase with respect to the gradient of this body.According to such practice, the spacing of screw line is determined in the same way as angle between screw line or as-spun fibre and heating tube body.The selection of anti-phase gradient or spacing makes it to realize that fiber cuts contact length weak point on the body at each ring, and realizes reliable the guiding on ring section body.

Hereinafter introduce Fig. 1-3 illustrated embodiment, the ring among the figure cuts body and constitutes with independent structural detail form, is disc and is sleeved on the heating tube 4.Fig. 1 and Fig. 2 disk 2 shown in respectively represents that with simple shape it has a columniform hole, and the external diameter of this Kong Yuguan closely cooperates.Adopt this mode, can encapsulation be contained in the disk bunchiness configuration on the heating tube.So, they form high heat conduction with heating tube and contact.

In the most preferred embodiment of being introduced, disk has a width of cloth to notch 5 herein, and corresponding to the diameter of heating tube 1, its opposite side is parallel to each other substantially for its inboard width.The outer rim of disk 2 is spherical.In front surface of disk, a cavity or groove 4 are arranged.Stretch out a pilot pin 3 from the reverse side of disk 2 front end faces, it determines element as an interval, it and the distance of the disk axis distance corresponding to groove 4 and disk axis.Such groove 4 of configuration is just enough separately in each disk.Yet, as can be seen from Figure 1, along the loop wire concentric with heater axis, each other and with disk 2 axis several grooves 4 of configuration of evenly at interval turning up the soil be useful.

Disk 2 is installed on the heating tube like this, makes the pilot pin 3 that stretches out from a disk 2 embed a groove 4 of axial adjacent discs.Preferably each disk 2 is contained on the heating tube by uniform angular deflection each other, make notch 5 and pilot pin 3 with the screw line Arranged rings around this heating tube.When as shown in Figure 1, several groove arrangement on week, just can be regulated this screw line in a garden, extend and cooperate along its each notch to form zigzag shape, along its fiber advance above heating tube (seeing below).Be clamped on the pipe in order to encircle 2, a thread Spring Card 10 can be snapped in the notch 5, the end of spring leans against on the relative sidewall of notch, and the middle body of spring flexibly reclines and manages 1.

Take off this card just can take down each garden dish and give replacing from pipe.When one of them disk damaged because of excessive wear, this point was with regard to particular importance.

Director element 8 and 9 is positioned at the both sides of notch 5, and spiral fiber 7 extend past in disk 2 zones in notch 5 outsides.Pilot pin 3 and corresponding notch 5 are pressed screw line and are extended arrangement, and this screw line is consistent with the direction of spacing and corresponding substantially with the spiral pitch of fiber channel.This whole circumference that just enables to realize to keep the disk in notch 5 outsides helps changing the passage of the fiber in advancing.

Best, disk is made by heat-resisting non-corrosive material, for example aluminium oxide or titanium oxide.In order to increase the tear strength of disk outer rim, if need to improve, by multiple, in order to increase the smoothness to fiber, can polish or polish by the disk outer rim with a kind of suitable metal for outer rim.

Embodiment illustrated in fig. 4 consistent with Fig. 1-3 illustrated embodiment, and have following characteristics.Ring 2 for example utilizes low-temperature welding to fixedly connected with heating tube 1, is evenly spaced apart each other.Yet ring 2 also can utilize the flange that is pressed into heating tube to constitute, and each flange is arranged by regular spaces.Also have, each ring can be carried out the garden groove that machined forms by the shell to heating tube 1 and form.The peripheral surface that ring 2 radially protrudes is spherical, and fiber is had along sliding characteristic.Ring is 2 in order to provide guiding by a certain distance to fiber above the area of heating surface, the area of heating surface is the case surface of heating tube 1, guiding for help around pipe 1 with the screw line mode around the passage of advancing yarn.As schematically illustrate, director element 8 and 9 is positioned at the two ends of heating tube, and its relativity shift has each other been determined the spacing of fiber channel threaded line or screw line.One at least two fibre guide elements can be carried out position adjustments toward each other on the Zhou Fangxiang of the garden of heating tube.

This just enables the slope of adjustable screw line.In addition, describe as a reference for Fig. 1-3.Be that with the basic difference of Fig. 1-3 illustrated embodiment each ring is to fixedly connected with the area of heating surface or constitute said elements separately.Particularly, if the heating tube preliminary working has thicker tube wall, just can process each ring in a large number.Needing on the heating tube to have than ring diameter is that remove by method for turning in little zone, and each ring just forms from tube-surface by machined.All these pattern features embodiment illustrated in fig. 4 can produce very excellent heat conducting contact.This is because the contact surface of each ring has as the identical temperature of the cardinal principle of the area of heating surface.Therefore, when the temperature of the area of heating surface is adjusted to an auto purification scope, promptly at 300 ° more than-350 ℃ the time, the effect of auto purification will occur on each ring.This means that fiber remnants is separated, or can be easy to wipe, or evenly taken away continuously, make to be sticky with this surface or fiber end article by fiber as dust.

In each embodiment of all the invention described above, each ring all is in the plane normal of heating tube 1.

With its relatively, Fig. 5 and 6 illustrated embodiments are characterised in that, heating tube along its whole length be 2 on a ring around, it is screwed pipe spring shape, or is a screw line (synonym) shape respectively.This flange can be that a wire rod is for example fixedlyed connected with pipe 1 by low-temperature welding.Yet this helical form ring also can form with the sort of mode, the heating tube wall is carried out machined process by a part of removing tube wall.This embodiment ring with have a kind of extraordinary heat transfer contact face of new life between the heating tube of above-mentioned advantage.

In the embodiment shown in fig. 6, this spirality flange is made of a kind of elastic wire of flexibility.The shape of this spring wire constitutes, and makes it to slide on the case surface of heating tube, flexibly closely is enclosed within on this case surface and has good thermo-contact.Therefore, the inboard of wire rod should be smooth possibly late.

The spacing of the line 2 that extends around heating tube 1 can change be that one of its end can along the circumferential direction be rotated with respect to the other end on case surface in a spiral manner, makes it can move in the axial direction.So when fibre guide screw line described herein extended in the heating tube scope, the spacing and the length of heating tube 1 had just changed.By fibre guide screw line described herein around cylinder, it is corresponding to the shell of heating tube, by two spiral line ends of relative adjustment at pipe 1 circumferencial direction and/or axially, this is cylindrical, and widen or narrow down can re-adjustments, makes this screw line and the diameter of pipe 1 keep adaptive state.

In Fig. 6, represent that with solid line spiral fiber guide 2 is in the elongation position, represents to be in compression position with chain-dotted line 2a.Screw line this variation produced widens or narrow down, be compensated by adjusting the screw line end relatively at the circumferencial direction of heating tube 1.

Similarly, in the embodiment shown in Fig. 5 and 6, fiber 7 is directed to along a screw line, and the spacing of this screw line is that the opposite pitch with the scroll flange that forms ring 2 in this embodiment changes.

Therefore, in two embodiment, realized fiber and ring or separately flange or separately the contact surface between the line on each single contact point, keep short as much as possible.On the other hand clearly, have the slight variation that an advantage is a fiber channel, cause the sizable variation of contact surface.Also have, an advantage embodiment illustrated in fig. 6 also exists, and in this case, it can change the density that fiber and each ring or each guide surface of screw line come in contact.Particularly, can give the high density scope of deciding ring.This point is a particular importance in the control section of heating pipe range.At other longitudinal component, particularly at entrance and exit partly, in this case, do not install ring.

This situation can realize, or be in conjunction with a static heating tube 1, with rotation mode configuration inlet and/or outlet fibre guide element 8 and 9, or with sleep mode configuration inlet and/or outlet fibre guide element 8 and 9, with combine around the rotatable heating tube 1 of himself axis, or with rotatable inlet and/or outlet fibre guide element 8,9 in conjunction with a rotatable heating tube 1.

In the embodiment shown in fig. 11, it is rotatable only exporting fibre guide element 9 relative these pipes, and inlet fibre guide element 8 then is static installation.

In the embodiment shown in fig. 7, outlet fibre guide element 9 is made of otch 16, can the coaxial lower end that is configured in heating tube rotatably, and this pipe can rotate among scope 15 relatively.

Should be pointed out that fiber 7 is stated as a screw line on the ring 2 in outlet fibre guide element 9 relative these pipe rotary courses, its physical dimension (width, spacing) is decided by to export the position of rotation of the otch 16 on the fibre guide element 9.

As mentioned above, Fig. 4 and embodiment illustrated in fig. 5 it is characterized in that, the shell of heating tube and each ring constitute by one whole, promptly each ring is fixedlyed connected with shell, or utilize low-temperature welding or melting welding, or or each ring of direct forming is that shell is carried out machined and therefrom formation on the area of heating surface.These features also are that Fig. 7-18 illustrated embodiment has.This design of the present invention can be suitable for institute's having heaters basically, and wherein to advance be each ridged part by means of along the area of heating surface to fiber, and best, the area of heating surface is to be curved along the direct of travel of fiber.Yet, need particularly point out, this design of the present invention can be applicable to according in institute's having heaters proposed by the invention.But this is replenished a bit is further measurement problem, and it can be used as and replenishes or as selecting, even in Fig. 3,4,5 embodiment.This measurement problem is following situation: each ring only has very little height.Therefore, be exaggerated to each ring shown in Fig. 5 at Fig. 3.Each ring equals respectively to encircle difference between external diameter and the heating tube shell external diameter at the height on the area of heating surface (heating tube shell), and its order of magnitude is no more than 5mm less than 0.3mm, preferably is no more than 3mm.Suitable scope is that 0.5mm is to 3mm.Select minimum constructive height must make that fiber is the contact heater shell not between each ring.Therefore, minimum constructive height is decided by that the interval of each ring also is decided by the external diameter of heating tube shell.This size Selection has guaranteed to conduct to the good heat of the outer circumference surface of each ring on the one hand, makes to reach the auto purification temperature at this place, perhaps, in any case can have very high temperature.On the other hand, it guarantees that also fiber advances at the fringe region place of trend heating tube shell, does not have the cross-ventilation of disturbance to exist at this place.At this place, fiber only is exposed to from the i.e. thermal radiation that the outside produced of this heating tube of the area of heating surface.Do not cause cooling at this place or temperature controlled becoming uncontrollable air flow existence.

This design of the present invention is applicable to the heater that all are so basically, and in this heater, advancing of fiber is by means of each ridged part that distributes along the area of heating surface, and be best, and the area of heating surface is to be curved along the fiber direct of travel.Yet this design especially of the present invention can be suitable for institute's having heaters of the proposition according to the present invention.

Fig. 7 and embodiment illustrated in fig. 8ly also have a following feature:

Fiber 7 arrives the periphery zone of this pipe then at first by inlet fibre guide element 8.Fiber utilizes and is led by fibre guide element 9 with circumferential element vertically at the port of export.In this case, fibre guide element 9 be one can be around the axis of pipe disk rotation, that have a fibre guide otch 16.Shown in Figure 7 is the form of simplifying, the position alignment of inlet fibre guide element 8 and otch 16.Fig. 8 represents that disk 9 rotations make that as mentioned above two elements of axial and circumferential that fiber is used in the pipe top lead, and therefore, are the zigzag shape that marches forward.Regulating disk 9 just can regulate around the coiling of this pipe fiber in a circumferential direction.Coiling is a synonym with fiber bending.Therefore, this coiling can make fiber lean against smoothly on this pipe fibre guide ring last or mounted thereto.

Heater comprises three parts or zone, i.e. intake section 11, control section 13 and terminal part 12.First of fibre guide element 8 and control section 13 encircles both together as fibre guide element 2.1, drives fiber through intake section 11.

If may, inlet fibre guide element 8 does not contact with heater.Realize this point, fibre guide element 8 is not heated.Therefore, on fibre guide element 8, can not produce deposit, and when fiber was heated, this deposit can produce originally.As mentioned above, the outlet fibre guide element of intake section 11 is made of first ring 2.1 of control section 13.

The area of heating surface is towards fiber, i.e. a certain distance in the shell of intake section 11 and fibrous septum, and this distance is the multiple of fiber and area of heating surface distance, the area of heating surface is the shell scope that control section extends between each ring 2.1,2.2,2.3.Fibre guide element 8 is the multiple at the interval of each the fibre guide element in the control section with the distance of first fibre guide element 2.1 of control section equally, and in this case, it is acceptable that length reaches 500mm.This length is decided by the intensity vibrated here to a great extent.Best, the length of intake section is selected smaller, can make fiber give heat effectively at least.

The temperature control part branch of heater comprises that the end gives the sensor of expression, and it detects the actual effective temperature of control zone 13.This temperature is controlled.This control zone has very accurate temperature control function.

Several fibre guide units of configuration are 3 in control zone 13.According to the present invention, each in this fibre guide element 31 comprises first fibre guide element 31.1, and director element 31 constitutes with the form of ring, and each ring extends in the scope of the part circumference of control section at least.These rings have a certain giving and decide the interval, in the control zone 13 all the other have a certain height more than the housing parts.The number of ring is determined by the oscillation intensity and the heat transmission of fiber.The ridged part is selected less with respect to the height of the shell of control zone, preferably be 3mm to the maximum.Preferred value is less than 1.5mm, and greater than 0.3mm.

These rings are to carry out machined by the shell to the control section to form.Therefore, they with heater between have good heat conductive and contact.Make it to guarantee that than the circlet height temperature control in contact surface also proves effective very much.Therefore, it has guaranteed the heter temperature more than 300 ℃ even has also possessed why temperature selects such height in the contact surface of ridged part 31.1,31.2,31.3, is that it can make the fiber residue cracking of adhesion and burns.Therefore, these fibre guide elements have good auto purification characteristic.

In all embodiments, along the width of the ring of machine direction heat being passed is conclusive equally.

In order to protect fiber, the fiber contact length will be lacked, and also must consider the requirement of heat transmission, carries out overall balance.Axially spaced-apart (interval of fibre guide element) between two ridgeds part, influential to the heat transmission equally.With on the whole, the ratio that can propose contact length and fibre guide element spacing is up to 20%, and still, preferably this ratio is smaller, preferably less than 10%.

The distance of the area of heating surface is the shell of entrance zone, threshold zone, and its value is the 3-10 times of the height of ring 2 relative control zone shells.What therefore, accompanying drawing was represented is not really to draw in proportion.

At terminal part, fiber is only led once more by minority fibre guide element, in this case, is the ring 2.3 that utilizes as the outlet fibre guide element of control zone, and utilizes above-mentioned disk 9 with fibre guide otch 16.Gap between the shell of fiber channel and terminal part 12 also several times greater than the height of shell of fibre guide ring 2.3 with respect to the control section.Moreover, be equally applicable to those sizes about the rule of determining size herein to inlet region 11.It seems that on the whole the interval between each the fibre guide element in terminal part is slightly smaller than the corresponding interval at intake section.Interval between the fibre guide element amounts to can reach 300mm, preferably smaller.The ring 2.3 that is positioned on the heating tube is heated to the auto purification temperature by the heat transmission equally.

In addition, the formation of each ring is consulted shown in Fig. 1-6.As shown in Fig. 7 and Fig. 8, the shell of each ring and heating tube is integral.

About Fig. 9 and Figure 10-embodiment illustrated in fig. 11, following feature all is suitable for:

To similar in Fig. 7-8 illustrated embodiment, each heater all includes an intake section 11 and a terminal part 12 respectively at the arrival end and/or the port of export place of heating tube 1, and they are bigger than the distance of the case surface of heating tube 1 and fiber 7 with the radial distance of the fiber 7 of advancing.

Control section 13 between intake section 11 and terminal part 12 also has a feature in this case.Yet, the latter not only is suitable for embodiment shown in Fig. 7-8 or respectively by Fig. 9-10 illustrated embodiment, they all have specific intake section, control section and a terminal part, and, also be suitable for even situation that distributes each ring or respectively encircle by another mode non-uniform Distribution.

Especially by noticing among Fig. 9, two embodiment of Figure 10-11 and embodiment illustrated in fig. 9 in, inlet fibre guide element 8 and outlet fibre guide element 9 can be with respect to heating tube 1 rotations, therefore on the surface of ring 2, form a segment angle, this segment angle since rotating range 15 limit, by fiber 7 topped.This just causes forming one between fiber and each ring may the contact zone.

Therefore, make fiber 7 decide in the segment angle zone giving, advance that this angle is fibre guide element 8,9 and manages 1 separately the function of position of rotation each other along desirable some mark.

The feature of Fig. 9 is that the ring 2.1,2.2 that is used as the fibre guide element perhaps also has 2.3 all to be annular.Along the circumferential direction, each ridged partly has ever-increasing degree of extending axially (width), and the narrowest place is delocalization, and like Figure 18 is indicated, accurately along body, basically one with line that the fiber contact wire parallels substantially on.Though the contact wire of this fiber is changeable.In this case, must select a contact wire adapting with normal operating conditions.Therefore, the inlet fibre guide element that not only is made of the disk 9 with fibre guide otch 16 in Fig. 9 can rotate around heater axis, and fibre guide element 8 also is like this.This just enables along the circumference of heater fiber channel to be moved to such zone, in this zone, the contact length of fibre guide ring 31 has desirable size, and in this zone, the ratio of the length that freely leads between desirable contact length and each ridged part exists.Therefore, may be not only the transmission of influence heat, but also influence smoothly advancing of fiber.On the other hand, too big contact length can cause fiber to rub by force, and this strong friction is undesirable from the viewpoint of protection fiber.

Therefore, Fig. 9 and embodiment illustrated in fig. 12 comprise respectively encircle its width in a circumferential direction, fiber 7 change in the scope of topped segment angle.This just means, the width of ring BVariation be decided by the circumference coordinate u, this variation is according to being to give fixed function B (u) to carry out under each situation.In this case, this function is a linear change.

In Figure 12, also be shown with such feature, with the possible contact range of fiber 7 in, the height of ring 2 HChange in a circumferential direction.This means, highly HIt is the circumference coordinate UFunction, with H (u) expression.

In the embodiment shown in fig. 9, the width of each ring BIncrease along this circumferencial direction, in the direction the height of each ring HThen reduce.Therefore wish, when width owing to the increase ring B, fiber 7 is when increasing contact time on each ring, and the heat that flows to fiber increases, and in the vertical relief area between each ring 2, owing to reduce similar apart from what happens between fiber 7 and the pipe shell simultaneously.

Replenish foregoing, Figure 10 and 11 illustrates, fiber institute can be topped the segment angle zone in, along the circumferential direction encircle 2 height and change, even when the width that encircles 2 be that ridged width partly is along the circumferential direction constant; Particularly consult Figure 14 and 18, hereinafter introduce in more detail.

Therefore, should spell out, these two embodiment of the present invention have the ring of variable-width just and have the ring of variable height, can both comprehensively constitute each other, also can constitute separately from each other.

The width of each ring BAlso can change synchronously.This means, along the length range width BBe constant, and be to increase synchronously at a certain circumferential coordinates place, for example be increased to a bigger width from a width smaller.

Similarly, above-mentioned paragraph is equally applicable to each ring at height HThe variation of aspect.This carries out slight horizontal adjustment with regard to enabling to the contact zone between fiber and ring, so that the heat transmission that remains between the area of heating surface and the fiber is unaffected.

Among each embodiment in Fig. 9-11, each cannelure that is formed at of ring carries out machinedly to pipe shell, make that leave each ring of the present invention advances along its fiber 7.In Figure 10,11 embodiment, have the different degree of depth along each groove of heating tube shell circumference, in Fig. 9, then have different width.

In running, carry out the heat transmission from the fiber of heating tube 1 to the contact zone that is in ring 2 and fiber 7 formation on the one hand.

In addition, between ring 2 not with the contacted longitudinal region of fiber in, to fiber 7 heats that flow.Because maximum several millimeters of the distance of the fiber in each encircles the bottom of the cannelure between 2 and advances, for example approximately be increased to 5mm from 0.3mm, suppose, the heating-up temperature of heating tube 1 is at 300 ℃ or more than it, particularly temperature is in the order of magnitude of auto purification temperature, in non-contacting longitudinal region, also produce effective heat flow.

The efficient heat that acts on the fiber flows, say it to be the advance function of each adjustable physical dimension of the fiber of managing physical dimension relatively on the whole, because, contact length is the same with the height of noncontact longitudinal region also erect image ring, depends on that inlet fibre guide element 8 or outlet fibre guide element 9 are with respect to heating tube other relative adjustment in 1 fen.Therefore, it is marginal parameter that the ratio of contact and the height of ring transmit heat, and the contact ratio need be interpreted as the merchant of fiber contact length on each ring and the next noncontact that encircles of the distance that continues length at interval.

Each ring that has differing heights along circumference can be by being processed to form, for example, make cylindrical, but want off-center arrangement to dispose with respect to the axis of pipe.But each ring also can form with oval mode or alternate manner.

Further introduce the various variation patterns of heat transmission below with reference to Figure 14-18 and 21.

Move fiber channel by circumference and can distinguish the hot-fluid that adjusting is delicately transmitted along heat pipe.All can generally speaking produce significant change aspect effective heat flow and the fiber temperature that reached in the very trickle change aspect the position of rotation respect to one another.

The present invention has obtained common recognition owing to be applicable to false twist crimping machine, hereinafter will be introduced in more detail.

Point out that above it is to carry out along a screw line or a spiral as-spun fibre that distributes along heating tube that fiber is advanced.For example, in the embodiment of heating tube shown in Fig. 9-11, wherein Huan contact width along the circumferential direction be change and/or its height in the scope of heating tube length, change, importance is relevant with such fact, the fiber of advancing along screw line always has same contact width or is having place and each loop contacts of sustained height respectively, each encircles one then one, with regard to they contact width or divide with regard to other contact height, along the circumferential direction, press the trend generation position skew of screw line.If, the slope of this screw line can by mobile fibre guide element 8 or 9 one of them be adjusted, so just can be with the mean value dislocation of spacing each ring in succession, spiral helicine as-spun fibre just can be adjusted.In any case so it will cause in succession each contact width or contact height all near identical size.

Need not be complicated, unsharp figure illustrates, people will be understood that in Fig. 9-11 respectively encircling and 2.1,2.2,2.3 etc. along the circumferential direction be offset according to a certain angle value respectively in succession.The above-mentioned mean value of the adjustable distance of the screw line that this angle value is embodied corresponding to being advanced by fiber.

Yet this circumferencial direction that people also can have a mind to abandon respectively encircling is offset, and with the configuration one by one of each ring, feasible body extension with each point of same widths and/or equal height along this pipe.Adopt this measure, the contact ratio of ring and/or contact height are formed by different modes along fiber channel, therefore, also make along the fiber channel length range heat transmission also realize by different modes.

All at least can be according to the having heaters embodiment of institute of the present invention to an advancing yarn heating.Yet, also can handle quite a large amount of advancing yarns simultaneously inlet fibre guide element 8 and outlet fibre guide element 9 along the circumference configuration is several.In order to realize this point, outlet fibre guide element 9 is offset equally respectively along circumference with respect to inlet fibre guide element 8.In this case, all fibres is advanced in the periphery scope of pipe along unidirectional screw line.Compare with it, embodiment shown in Figure 13 is a kind of improvement project, and two fibers spacing is in the opposite direction advanced along screw line separately.

Introduce Figure 13 A and Figure 13 B below.

Figure 13 A is a kind of like this vertical cross section figure of heater, and it includes the heat guard 41 around heating tube.Figure 13 B is the side view of the heater of described improvement project, and it is towards the threading notch 42 of heat guard.

Heat guard 41 around heating tube 1 is tubular bodies.This tubular body 41 has a vertical notch 42 along the body trend.This vertical width of rebate be several millimeters to avoid heat to scatter and disappear.The heat insulation layer of nature heat guard 41 end reflection in its front surface equally will be with Figure 13 A seals.The width of the notch 42 in Figure 13 A and 13B is all by exaggerative.Outlet fibre guide element 9 rest configuration drop in the width of rebate scope.Yet, they also can described position and one towards and leave between the position of notch 42 center lines 40 and move.As mentioned above, heat guard 41 shown in Figure 13 B is improvement schemes, can be recognized by the profile that thick line is represented.

Under any circumstance, inlet fibre guide element 8 can be from its threading position that Figure 13 B dots, moving to its operating position (arrow) by opposite direction (arrow), can also see through the potential heating tube area of heating surface part of heat guard 41 identifications, itself is sightless.

Can find out that from Figure 13 A heat guard 41 and heating tube or single some rings that stack form a narrow air gap along circumferential area together, are movably at this zone fiber.When with each fibre guide element 8 along opposite direction, when the threading position that itself and notch 42 align moved on to its operating position, each fiber was advanced along a helix shape along the circumference of ring 2, the screw line of two fibers has rightabout spacing.

When outlet fibre guide element 9 also threading position from aligning with vertical notch 42, when oppositely moving to the operating position, nature need move on to inlet fibre guide element 8 farther, so that make each root fiber become the spiral as-spun fibre with desirable spacing.Should remind place, operating position shown in two fibre guide elements 8 and 9 also can be configured in still.This point is more suitable because also may be in fact substitute outlet fibre guide element 9 with the groove of coldplate 19, this coldplate shown in Figure 13 B, but to stress a lot of devices so that and each groove aim at.In this case, the advancing yarn that the suction gun that has utilized threading to use is pulled out and led, the fibre guide element at first enters the mouth, import then and pass vertical notch 42, horizontal after this tension is also inserted outlet fibre guide element 9, or director element 9 aligns or disposes in its vicinity with vertical notch 42.

In each embodiment of by the agency of, along the circumferencial direction of heating tube 1, the contact ratio of ring and/or highly all change makes because the result of mobile as-spun fibre along the circumferential direction can change the heat that is applied.That show in expectation shown in Figure 14,15,16,17 and 18 is the such embodiment that may adopt of some rings, and in each embodiment, two perforating fibers are heated on heating tube.

In the embodiment shown in fig. 14, each encircles 2 relative tubular axis lines 17 is eccentric installations, and the degree of eccentricity of each ring in succession is to be offset 180 ° toward each other respectively.

The advantage that this embodiment has is, by between heating tube and fiber channel 7.1 and 7.2, presses the relative rotation of equidirectional, and the ratio of the height that encircles at the fibre-contact point place is symmetrically, changes by same way as.

Figure 15-17 has introduced the embodiment that has two fiber thermals treatment zone 25 on heater 1 with the same manner.

In each fiber thermal treatment zone 25a and 25b, what fix on the area of heating surface is several ridgeds parts (ring cuts bodies 2), the direction that it is advanced along fiber, and axially configuration one by one extends in area of heating surface ring height in addition 0.1mm at least, is not more than 5mm.

Therefore, this point is important, and the height of ring 2 more than the area of heating surface amounts to and be not more than about 5mm, so that realize advantage according to heater proposed by the invention, and special auto purification and sensitive adjusting function.

The width of ring 2 BAlong the circumferential direction change.Indicate, this may be an advantage of the present invention with should be understood that, and it changes separately or along the circumferential direction changes mutually comprehensive with the height of ring.Under latter event, along with width increases, height should reduce, and strengthens if wish fuel factor, and fiber channel is moved on in the regional extent with big width.

In the embodiment shown in fig. 15, width constantly increases towards both sides from the body of heater.Therefore, when a fiber when advance in the body both sides, these fiber channels relatively, along identical direction, the relative rotation of pipe will cause two fiber heating effects to produce opposite variations.If this may be wish do not wish such situation, guarantee, respectively with the inlet fibre guide element 8 and the outlet fibre guide element 9 of a fiber channel associated, separate with fibre guide element and to adjust along other fiber channel of heating tube circumferencial direction.In order to realize this point, on fibre guide element 8 and the some levers of 9 supportings, these levers can be around the axis rotation of heating tube.As shown in figure 16, it also may be significant doing like that, promptly only utilizes its width BAlong the circumferential direction be that each ring that changes provides a fiber thermal treatment zone, and to aforementioned similar, the height of ring HChange equally, and in two fiber thermals treatment zone another, the width of ring BHeight with ring HThen be constant.

In this case, and do not require, between inlet fibre guide element 8 or outlet fibre guide element 9 and heating tube, provide the relative adjustment ability (left side) fiber channel.

Yet to another (the right) fiber channel, it is possible carrying out relative adjustment between heating tube and fiber channel, for example, and by regulating the fibre guide element 8 and 9 of associated.This adjusting should make the heat effect to a fiber adapt with the heat effect to another root fiber.

In all embodiment that between heating tube and fiber channel, carry out relative adjustment of the present invention, on the one hand,,, can along the circumferential direction carry out this relative adjustment by rotating pipe when fiber channel is static.In false twist crimping machine, this is a kind of obvious solution, because this fiber channel is limited by the machine physical dimension, the variation of fiber channel all can newborn passive influence to fiber tension and other procedure parameter.Yet, under another situation, fiber channel respectively with synchronization-moving inlet fibre guide element 8 or outlet fibre guide element 9 associated, also can carry out relative adjustment, two director elements are configured in the end regions of rotatable lever 26.Yet, promptly also can change by relative adjustment fibre guide element and to add thermal effect by the slope that changes as-spun fibre.

In order to realize synchronous rotation, can each fibre guide element lever be coupled together by a geared system.Embodiment in Figure 16 realizes that this point is, the fiber properties of two fibers of advancing along heater is mutually the same, perhaps deliberately regulates in different ways.Mention the embodiment of Figure 17, can be as a reference with the introduction of Figure 15 and 16 embodiment.This embodiment is characterised in that for the right fiber passage, only Huan width along the circumferential direction increases, and the height of the ring more than the heating tube shell remains unchanged.For left side fiber channel, the width B of ring along the circumferential direction increases, and the reverse direction opposite side, and the height H of ring reduces.In this embodiment, this method is useful, in order to regulate right fiber passage and left side side fiber channel independently of one another, by corresponding adjusting inlet fibre guide element 8 and outlet fibre guide element 9, or change the slope of screw line, or parallel displaced spirals line.This point also is applicable to all embodiment of the height of the width that utilize to change ring or ring.Circumferentially the moving of fiber channel makes it to add thermal effect and differently changes.Therefore, not only may realize absolute change, and can be correlated with therewith, be embodied as the needed corresponding fit step of the target temperature that will reach adding realization variation relatively on the thermal effect to the thermal effect that adds of each fiber channel.

Figure 18 a-c is that the height of ring along the circumferential direction changes with respect to the shell of heating tube with the axial schematic diagram of the heating tube of two rings 2.

In the embodiment of Figure 18 a-c, realize that this point is, shape of each ring is oval-shaped, with columniform heating tube be concentric arrangement.This configuration mode makes and disposes two fiber thermal treatment zone 25a and 25b relatively along diametric(al), and, in this case, further configuration inlet fibre guide element 8 or outlet fibre guide element 9 on lever 26 separately make fiber advance having on the position of identical condition of work.To this, essential condition is that two fibers lead by equidirectional along a screw line.In this case, the same moved further of two inlet fibre guide elements 8 or corresponding outlet fibre guide element 9 produces same variation in two as-spun fibres, and influences the condition of work that first long and slender dimension is stood.This is equally applicable to the synchronous adjustment of two outlet fibre guide elements 9.Therefore, can on same lever, dispose a pair of inlet fibre guide element 8 and a pair of outlet fibre guide element 9 respectively, and this lever is to rotate around the axis of heating tube.

At the fiber channel shown in Figure 18-c is suitable especially.In this embodiment, each root fiber 7 only between the major semiaxis of ellipse and semi-minor axis along advancing in the quadrant scope of stretching.

Should point out, in selected quadrant, increase continuously in the heat of fiber is transmitted in whole fiber length ranges between inlet fibre guide element 8 and outlet fibre guide element 9 from heating tube 1, because when this fiber is advanced in this quadrant, between fiber on the inlet fibre guide element 8 and heating tube 1, very big distance is arranged, this distance obviously reduces when fiber orientation outlet fibre guide element 9 is advanced, and it presents minimum of a value at outlet fibre guide element 9 places.

Heat transmission in the whole length range that fiber between inlet fibre guide element 8 and outlet fibre guide element 9 is advanced distributes, and in all this class embodiment, in the same way, it is adjustable becoming as the total amount of heat transmission.

In the embodiment of the vesica piscis shown in Figure 18 a-c, in selected quadrant scope according to Figure 18 c, along same direction, in moving by the fiber channel of selected as-spun fibre slope, between the ultimate range in minimum range in the ellipse short shaft zone and the transverse zone, each encircles 2 gamuts that distribute and is suitable for this adjustment.

In possible fiber contact route scope, people's expectation, at a certain relative position place between inlet fibre guide element 8 and outlet fibre guide element 9, may have best hot laser propagation effect, in this case, exist a kind of from pipe to the transmission of the heat of fiber, its direction along fiber increases continuously.

Therefore, in the present embodiment, " two oval anti-phase points " are appreciated that two border circular areas into such ellipse, and this zone is opposite with respect to the crosspoint of transverse and minor axis in diametric(al).

The embodiment of Figure 18 d and Figure 18 e equips the ring 2 of eccentric configuration.Ring 2 is circular, the center of circle of ridged part 2 and degree of eccentricity 27 of the center of circle of heating tube skew.

In this case, the off-centre of all rings all is in the same radial side of the axis in the common axis line plane of heating tube 1.

Inlet fibre guide element and outlet fibre guide element are for every fiber, all be configured in respectively on the fibre guide element lever 26, and with respect to the center of ring 2, along the circumferential direction be rotatable, to produce same effect to being heated fiber.

Two fibers 7.1 and 7.2 are advanced along the bifilar helix passage with reverse spacing.

In this manner, its enforcement is, only to inlet fibre guide element 8 or only outlet fibre guide element 9 is carried out adjusted in concert, act on two hot-fluids on the fiber and be affected in the same way, promptly be subjected to same influence along the heat flux distribution of the fiber length ranges that is exposed to heating tube and this two aspect of total amount of heat.

As being added in Figure 18 e, this figure is according to Figure 18 d, the situation behind the expression Rotate 180 °, and it can influence realizes best from heating tube 1 to the heat transmission of fiber 7.

When in situation shown in Figure 18 d, entering the fiber in inlet fibre guide element 8 zones and the area of heating surface of heating tube has a relatively large distance, and by comparison, the fiber of leaving away then has a less relatively distance, and this state just in time situation with Figure 18 e is opposite.

In Figure 18 e, the fiber that enters inlet fibre guide element 8 zones is heated in relative stronger mode, because the distance of the area of heating surface of it and heating tube 1 is very short, and the fiber of leaving away in outlet fibre guide element 9 zones has the relative distance of growing with the area of heating surface.

Fig. 9 can regulate heat effect to fiber delicately to each embodiment of Figure 18, and it is adapted to the various parameters of each fiber delicately.Therefore, always can be operated in the auto purification temperature at heating tube and ridged part, even use the fiber of very thin number, contact ratio and/or fibrous septum also suit to this fiber.However, it is suitable for heating the fiber of any kind of and is without prejudice.

At first, the present invention can handle it to have different numbers, and for example 20 or filament out of the ordinary 40 if the relative position between the advancing yarn and the area of heating surface is wanted corresponding adjusting, use the identical heater while just can carry out such processing.

Therefore, all these embodiment, by an above-mentioned heater, the temperature that does not change or regulate the area of heating surface only by selecting the relative position between fiber channel and heater, just can realize different heat transmission and target temperature.Therefore, it can also adapt to various fiber thickness degree (number) and material (polyester, nylon) or desirable different separately fiber properties.

Up to this point, each embodiment of by the agency of wherein encircles 2 as the single structure element, and is by slippage, perhaps fixedly connected with it along heating tube, becomes the part of heating tube.Consult Figure 19-22 below, introduce the embodiment of ring as the global formation part of absolute construction parts.For all embodiment of Figure 19-22, following content all is suitable for: sleeve 33 slides along cylindrical heating tube 1.Sleeve 33 is sheet products, and it at the place, the thermal treatment zone of fiber channel and fiber, closely leans against on the appearance profile of heating tube at least.It can be a cylindrical part, utilizes spring or herring bone to be fixed on the heating tube.Among each embodiment in Figure 19-22, sleeve is columniform pipe, and its internal diameter is corresponding with the external diameter of heating tube, has a tight fit tolerance.This sleeve has several rings of the present invention 2 in the axial direction.Figure 19-22 illustrated embodiment is inequality with regard to the formation of ring.Sleeve is limited by a guideway 45 in the axial direction.Yet it is rotatable.In order to realize this point, sleeve has 44, one the suitable instruments in several holes along its circumferencial direction and passes this hole and can insert to rotate this sleeve.Yet, also may be standing rotary device of the installing of the sleeve among Figure 19.

Among the embodiment in Figure 19, sleeve in the zone of fiber channel, in several plane normal, is outwards to swell at least.This protuberance can utilize on axis direction for example rolling and/or suppress this pipe and form.Therefore, be circumferentially formed the ring 2 of several protuberances.One or a few fiber can be advanced along its cylindrical.

When the obvious pollution of heater was reckoned with, present embodiment had special advantage.In this case, can be according to the time interval, be used for continuously, lentamente or utilization figure on the drive unit of end expression rotate the sleeve that this along the circumferential direction is a symmetry.Therefore, fiber is taken away the deposit that is formed on the ring continuously.This just enables to increase quite significantly the time range of heater cleaning.For the entrained impurity of fiber is unconspicuous to the influence of fiber quality.

In the embodiment of Figure 20 and 21, sleeve has several rings, and it follows the fiber channel of the phase of giving, and some grooves 34 form in the plate face of sleeve.Groove 34 is the holes that form in the plate face, and embodiment illustrated in fig. 20 is a kind of improvement project, and it is consistent with shown in Figure 13 A and the 13B basically.In a way its introduction be can be used as reference.Yet in the embodiment of Figure 13 A, 13B, ring is the part of heating tube, and in the embodiment of Figure 20, ring is that formation is to utilize above-mentioned groove 34.Stretch on groove edge in the part periphery scope of sleeve, and axially going up each groove 34 in succession is position skews, is following the as-spun fibre that gives fixed center, presses certain angle value skew along the circumferencial direction of sleeve.Groove 34 is rectangles, and circumferencial direction is pointed on its long limit, and each all is in the plane normal.Therefore, the ridged ring between adjacent grooves cuts body and remains.Its effect is the same with ring 2 of the present invention.In Figure 20 embodiment, two row's grooves, 34 adjoining lands carry out alignment arrangements by the opposite axial dipole field of distance center line 40 symmetries, make that because the effect of the inlet fibre guide element 8 of the coupled system of difference and outlet fibre guide element 9, two fibers can lead and cross each groove and each ring.It is big like that selection is stretched on the circumferential edge of each groove, makes it can regulate the fiber channel of the phase of giving.

In embodiments of the invention shown in Figure 21 A-B, sleeve 33 constitutes with the cylinder of a hollow equally, is contained on the heating tube 1 in the same old way, and the internal diameter of hollow circular cylinder has friction tight tolerance corresponding to the external diameter of heating tube.This cylinder i.e. hereinafter sleeve 33 is fixed on the heating tube 1, prevents axial displacement, but can be around the heating tube rotation, if need, rotatablely moves and depends on and unclamp a locking member, and this element end illustrates.In the embodiment of Figure 21 B, two fibers are advanced along two opposite sides along sleeve.Relevant inlet fibre guide element 8 and outlet fibre guide element 9 do not give expression.This is in order definition not to be produced adverse effect.Correspondingly, fiber does not represent with the shape of screw line that when work, fiber becomes zigzag shape, is parallel but only schematically illustrate axis.Yet,, also be applicable to this as above-mentioned same quadrat method for fiber is led.In order to realize this point, introduction embodiment illustrated in fig. 20 is particularly suitable for as a reference.

By comparison, the embodiment of Figure 21 A-B has following feature, and each groove 34 is a row with in the upwardly extending mode alignment arrangements in the axial side that is parallel to heating tube 1, and forms the ring with same width cut body 2 between each groove.Ring cuts body 2 and as the ridged part fiber 7 is wherein led, and is wide in the axial direction.Sleeve 33 can be around heating tube 1 rotation, this fact provides a kind of like this possibility, make the zone of on circumferencial direction edge stretching of fiber 7 in ridged part 32, above the place of a cleaning, advance respectively, therefore, further increased the auto purification effect of ridged part, this auto purification exists according to aforementioned temperature itself.The identical shaped groove 34 ' of one row is radially relative with groove 34, and its fiber channel along second fiber 7 is arranged.

Along the circumferential direction, also have row's groove 35 near this row's rectangular recess 34, it is trapezoidal.These grooves form cambridge ring betwixt and cut body, and this paper is denoted as 38.Coming relative on the diametric(al) with this is the trapezoidal groove 35 ' of same alignment arrangements.And the ring that respectively is wedge shape that is used for second fiber cuts body.Therefore, provide a kind of like this possibility around heating tube 1 turnbarrel 33, promptly changed the length of the area of heating surface that contacts with fiber by simple.

Along the circumferential direction, close row's trapezoidal groove is another row groove 36 in succession.These grooves are relative narrower in the axial direction, and partly being used as wide ring cuts body 2 but leave over therebetween, and it provides the ridged part that has the fibre guide of big contact surface with fiber 7.Corresponding with other groove, still be under the situation of groove 36, have corresponding ring with radially relative row's groove 36 ' and cut body, the contact channels that is used for constituting second fiber is provided.

Figure 19 is the enlarged drawing as a kind of sleeve pipe of scheme.Each row's groove has same shape, has equal interval each other.Between each row, the ring that alignment arrangements is along the circumferential direction extended cuts body.Each ridged part between each row's groove that keeps along the circumferencial direction of sleeve 32 is important to the rigid structure of sleeve, but in addition, their existence only influences being evenly distributed of heat.

Sleeve shell thickness metering be by 0.1mm to 5mm, (being actually 0.3mm) is preferably from 0.5mm to 3mm.This just makes and can also enough realize in the present embodiment, between heating tube 1 case surface and cut corresponding to the ring of the high size of above-mentioned ring that radial distance drops within the scope of being discussed between the surface of body, preferable range to 5mm, is preferably 0.5mm-3mm from 0.1mm (in fact 0.3mm).

Sleeve 33 can be provided with difform groove, with the needs of other desirable service condition of satisfying condition of work and may running into.

Sleeve is an inexpensive structure element, is easy to installation and removal.In the range of structures of sleeve, the shape formation that the shape of groove is cut body with ring or respective rings all is non-limiting.Therefore, in this embodiment, owing to have a special advantage, should consider, the formation of sleeve can be adapted to contact ratio, and (ring cuts the width of body and the ratio of recess width, the direction that this width is advanced corresponding to fiber), the quantity and the distribution of ring, be adapted to each independent application scenario (fibre count, fiber gait of march, fibrous material, target temperature, other or the like).

Have common characteristic in various embodiments of the present invention shown in Figure 22 A-B and be, the sleeve that has fibre guide ridged part or respective rings 2 is made of tubular portion 33.

Each section of following one in two embodiment, as a telescope, is suitable for slipping into each other in the axial direction.In order to realize this point, the twoth, the end of the section that is linked in sequence toward each other, wherein the external diameter of one section end corresponding to the internal diameter of the end of another section, has friction tight tolerance basically.These sections are all through on the heating tube 1.

Under the situation of Figure 22 A illustrated embodiment, each all is made of sleeve 33 the axial part 33b that has larger-diameter axial part 33a and have a less external diameter, and the latter is corresponding to the internal diameter of the axial part 33a with less external diameter.Suitably screw thread G is carved into the inner surface of outer cover of the axial component 33a with big external diameter, and the outer surface of outer cover with axial component 33b of less external diameter, so that make single tubular portion 1 is connected with each other.If need, can utilize locking nut K retaining thread to connect, therefore, can accurately regulate each several part relative position each other.Cylindrical with each several part 33a of big external diameter partly is ring 2.Embodiment shown in Figure 22 B is different from Figure 22 A part and is, alternately arranging than each section of minor diameter with than each section of major diameter in succession each section.The external diameter of inboard each section is corresponding to the internal diameter of each section of the outside.Utilize the outside and each section of inside thread G to be spun on together,, utilize locking nut to be fixed in their relative positions each other if need.Have a ring 2 on each big Duan Zaiqi case surface as the fibre guide element, described ring 2 constantly increases along vertical width of sleeve.

In addition, the front of other embodiment is introduced and also is applicable to these embodiment with heater and its fibre guide ring.Particularly, can constitute ring according to the foregoing description of Fig. 9-12.

Heater of the present invention preferentially is applied in the false twist crimping machine.Such false twist crimping machine is existing to be introduced, and for example in the DE-PS3719050 document, it comprises: several fiber feed bags, and fiber is pulled out from each bag; Heating system, every fiber is advanced through this system; Cooling system, every fiber is advanced through this system; False twist unit, it produces instantaneous being twined effect and presenting transmission system to every fiber, and it is pulled out fiber or pull out fiber in addition from false twist unit from fiber feed bag.Then, each root fiber is wound onto a coiling and wraps.Institute of the present invention having heaters all can use, particularly the heater that disposes in the false twisting operation area.

Figure 23 with 24 in further expression: inlet fibre guide element 8 and to export fibre guide element 9 be relative adjustable each other, or be synchronous adjustable along the circumferencial direction of heating tube 1.Each fibre guide element utilizes stepping motor 23 to regulate.Perhaps conversely, also may rotate heating tube regulates.This heating tube has the ring that is constituted according to Fig. 9-12.Perhaps, heating tube also can use according to the liner ring shown in Figure 20 or 21 around.In any case the formation of ring is such, contact ratio and/or the height that encircles more than the area of heating surface along the circumferential direction to all rings, change by identical or different degree.

In the false twist crimping machine of Figure 23, inlet fibre guide element 8 and outlet fibre guide element 9 utilize the stepping motor rotation, regulate according to the function at the fiber temperature that the port of export detected of heater.

In order to realize this point, use a temperature sensor 22 that is configured in the exit region of heating tube 1, it sends an output signal, utilizes this signal enabling stepping motor, and inlet fibre guide element 8 and outlet fibre guide element 9 move according to the function of temperature.

Should spell out, the measuring-signal of temperature sensor 22 also can be superimposed with the fiber tension signal, and tension signal is produced by tension detector spare 24, and this device occupies the lower exit place of heater in the embodiment of the invention.

The embodiment of Figure 24 can be elected to be a kind of alternative.In this false twist crimping machine, utilize the tension detector spare 24 detection fibers tension force in the downstream of friction false twist unit 20.The stepping motor of action inlet fibre guide element 8 and outlet fibre guide element 9 is controlled by the output signal of tension detector spare 24 and is along the circumferential direction moved.Point out, the downstream in the friction false twist unit, the fiber tension of Chan Shenging all is a detection limit concerning all procedure parameters in the course of the work, it constitutes the mass parameter of curling.In order to influence the target temperature of heat transmission and fiber, move fiber channel along the circumferencial direction of heating tube, enable to be implemented in some restrictive condition scopes, the fiber tension of friction false twist unit downstream part is kept constant.If these restrictions are exceeded, other procedure parameter will be forced to be conditioned or proofread and correct.About introduction to Figure 23 and Figure 24, having the advantage that the false twisting machine of heater of the present invention has is, available heat transmission from the heater to the fiber can be regulated respectively very delicately, the implementation procedure optimization, also be very accurately to control or to regulate fiber temperature, so that in the whole length range of fiber channel, obtain best fiber quality.

With reference to digital 1 heating tube, 2 rings, ring cuts body 3 intervals and determines element 4 grooves, the cavity, hole 5 notches 6 resistance 6a power lines 7 fibers 8 entrance fibre guide elements, fibre guide element 9 outlet fibre guide elements, the 25b fiber thermal treatment zone, fibre guide element 10 Spring Card 11 intake sections, 12 terminal part 13 control sections, 14 fiber direct of travel 15 direction of rotation, 16 otch 17 tubular axis lines, 18 feeding system 19 coldplates, 20 false twist unit 21 transmission systems, 22 temperature sensor 23 stepping motors, the 24 tension detection unit 25a fiber thermal treatment zone 25 fibre guide element levers, 27 degree of eccentricitys, 30 heaters, 31 fibre guide elements, the ridged part, encircle 32 sides, 33 sleeve 33a sleeve axial component 33b sleeve axial components, 34 grooves, 35 grooves, 36 grooves, 37 ridged parts, 38 ridged parts, 39 ridged parts, 40 center lines, 41 heat guards, 42 vertical notches, notch, threading notch 43 grooves 44 holes 45 axial channel

Claims (39)

1. be used to heat the heater of a kind of thermoplastic fibre of advancing (7), wherein fiber (7) is advanced in the ridged part scope on being configured in the area of heating surface along being heated the surface and being separated by with this area of heating surface, it is characterized in that,

The area of heating surface is the shell of a heating tube 1, this area of heating surface with vertical direction of intersecting on be curved;

Ridged partly is to utilize ring to cut body (2) to form, and ring cuts that body (2) is installed in that heating tube (1) is gone up and extension in the scope of the part periphery of heating tube (1) at least; And

Initial sum end configuration fibre guide element (8,9) at heating tube, the fibre guide element is along the circumferencial direction position skew each other of heating tube, driving fiber by means of it advances by the screw line of sharp change along heating tube, the appearance profile that cuts body with ring contacts, but does not contact with the heating tube shell.

2. heater as claimed in claim 1 is characterized in that, this ring section body (2) is the form formation of screw line with the flange of spiral surrounding calandria.

3. heater as claimed in claim 1, it is characterized in that, ring cuts body and utilizes several die cavitys to form, it is goed deep into the area of heating surface by machined, ring cuts body along the circumferential direction, at least in the scope of the part periphery of heating tube, extend, and have a length that limits vertically and follow arrangement each other, between two axial adjacent die cavitys, leave one and be used as ridged part fibre guide, cut body as ring.

4. heater as claimed in claim 3 is characterized in that, the degree of depth of die cavity preferably at 0.1mm between the 5mm, be preferably in 0.5mm between the 3mm.

5. heater as claimed in claim 1, it is characterized in that encircling a section body utilizes the loop configuration element to form, its inboard profile has the tight fit tolerance corresponding to the appearance profile of heating tube, and it is set on the heating tube, axially spaced apart with spacer element 3, utilize the thickness of structural detail, promptly the difference of exradius and interior radius of circle makes ring cut body and gives prominence to from the area of heating surface, its numerical value is 0.1mm at least, but is not more than 5mm.

6. heater as claimed in claim 5, it is characterized in that, loop configuration element (2) is housed, they inner peripheral surface and outer circumference surface between it has a radially notch (5), its width is to being the diameter that equals heating tube (1) less, notch is axially gone up the proximity structure element, best, along the circumference of heating tube, press the trend of screw line, be offset a certain fixed angle value, this screw line fiber is advanced along heating tube.

7. heater as claimed in claim 6, it is characterized in that, each structural detail (2) of being adorned has an axially extended pilot pin as spacer element (3) in the one side, has groove (4) in its other side, utilize the pilot pin that cooperatively interacts and the groove of axially adjacent structural detail, preferably with respect to notch (5) radially, circumferencial direction along heating tube, through a fixing angle value skew, make the radially notch (5) of each structural detail (2) in succession arrange along a screw line basically corresponding to the screw line of fiber (7).

8. heater as claimed in claim 7, it is characterized in that two spacer element (3) net palisades of axially going up contiguous structural detail (2) match, and constitute the net grid whereby, with the concentric circle of heating tube on, with fixing angular displacement many die cavitys (4) are set on each structural detail (2).

9. heater as claimed in claim 6 is characterized in that, a Spring Card (10) can slide between the side of notch (5), and its middle body flexibly abuts on the shell of heating tube (1) and will encircle (2) and is clamped on the heating tube.

10. heater as claimed in claim 1, it is characterized in that, the sleeve (33) of plate-shaped that will be consistent with the area of heating surface of heating tube stretches tight on the area of heating surface, and ring cuts body (2) and is formed by bulge, its vertically, be spaced from each other ground adjoining land alignment arrangements on sleeve, this sleeve is preferably rotatable along the circumferencial direction of heating tube.

11. heater as claimed in claim 1, it is characterized in that in the scope of the area of heating surface, extending with the sleeve (33) of the corresponding plate-shaped of the area of heating surface of heating tube, and, each ring cuts body and is formed by groove (34), this groove (34) is formed in the wall of sleeve and alignment arrangements at each interval vertically, this groove along the circumferential direction, at least in the part circumference range of heating tube, extend, and has a length that limits vertically, follow arrangement each other, the ridged between two grooves adjacent on axially partly cuts body to fibre guide as ring.

12. heater as claimed in claim 11 is characterized in that, the thickness of slab value of sleeve is 0.1mm at least, but is no more than 5mm.

13., it is characterized in that this sleeve is that a plurality of interconnective section adjustable (33a, 33b) form as the described heater of claim 10-11.

14. heater as claimed in claim 13 is characterized in that, section (33a, 33b) can be each other to insert on the mode ground of telescope sleeve.

15. heater as claimed in claim 1, it is characterized in that, for the fiber of every fiber heated zones is introduced part and fiber outlet part inlet porting fibre guide element and outlet fibre guide element, it leads to cutting the fiber of advancing along a screw line in the scope of body at each ring, but the fibre guide element is along the circumferencial direction of heating tube relative displacement and location each other.

16. heater as claimed in claim 1 is characterized in that, several fibers are advanced in the area of heating surface scope of heating tube, and each fiber channel is respectively equipped with an inlet fibre guide element (8) and an outlet fibre guide element (9).

17. heater as claimed in claim 16 is characterized in that, two fibers are advanced in the heating tube scope, have opposite coiling direction, along the circumferential direction change distance at interval by one, and winding angle is less than 180 °.

18. heater as claimed in claim 1 is characterized in that, it is that contact length is along the circumferential direction changing at the width that has in may contact range with fiber that each ring cuts body;

Heating tube and each the fibre guide element that partly is provided with for the fiber entry of each fiber heated zones part and fiber outlet, promptly enter the mouth fibre guide element 8, outlet fibre guide element 9 guiding fibers (7) advanced on each section ring body along a screw line, but and relativity shift and like this location on the circumferencial direction of heating tube each other, make that at the contact ratio that encircles on section body promptly the fiber contact length that cuts on the body at ring is adjustable with one that the follows merchant who encircles the noncontact length of section body.

19. heater as claimed in claim 1, it is characterized in that, each ring cuts body may along the circumferential direction changed with the height that has in the scope that fiber contacts, heating tube and introduce inlet fibre guide element 8 that part and fiber outlet partly be provided with and outlet fibre guide element 9 for the fiber of each fiber heated zones and in each ring cuts the scope of body, guide fiber (7) along a screw line, they are at the circumferencial direction along heating tube, but relative displacement and location each other.

20. heater as claimed in claim 19 is characterized in that, ring cuts the appearance profile of body, at least basically be oval-shaped, oval center and is preferably on the oval relative point on the axis of heating tube, drives two fibers with same inclination angle and advances.

21. heater as claimed in claim 20 is characterized in that, on the corresponding point of ellipse, drives two fibers with same inclination angle and advances.

22. heater as claimed in claim 19 is characterized in that, it is circular that ring cuts body and ring cuts the setting of the relative heating tube eccentric axis of body.

23. heater as claimed in claim 19, its feature, is advanced according to rightabout inclination angle respectively along this side and the opposite side of the axial plane of heating tube in, two fibers, each ring cuts being centered close on this plane of body, axially goes up adjacent ring and cuts body and be offset 180 ° each other.

24., it is characterized in that each ring of arranging one by one vertically cuts body and along the circumferential direction presses the fiber deviation of contact wire substantially as one of them described heater of claim 18-23 on heating tube.

25. as the described heater in one of claim 18 or 19, it is characterized in that, so mutually adjust heating tube and inlet fibre guide element (8) and outlet fibre guide element (9) according to the fiber temperature that detects at the heater outlet end, promptly by change and regulate contact ratio or the fiber and the area of heating surface distance and with the fiber temperature substantial constant maintain on the desired rated value.

26. as the described heater in one of claim 18 or 19, it is characterized in that, so mutually adjust heating tube and inlet fibre guide element (8) and outlet fibre guide element (9) according to the fiber tension that detects in the heater downstream, promptly maintain on the desired rated value with making the fiber temperature substantial constant by the distance that changes and regulate between contact ratio or the fiber and the area of heating surface.

27., it is characterized in that heating tube has contact ratio and the height that different rings cuts body along the thermal treatment zone that its axial length is provided with as the described heater in one of claim 18 or 19.

28. heater as claimed in claim 27, it is characterized in that, heating tube comprises a section, therein comparing with central area, is increased to greater than 5mm and/or contact ratio apart from the distance of the outer surface of heating tube and is reduced to conditions leading fiber less than 0.1 significantly.

29. the heater that is used to heat a kind of thermoplastic fibre of advancing (7) wherein partly guides fiber (7) along the ridged that the heated upper surface of bending and the ground warp of being separated by with it are configured on the area of heating surface, it is characterized in that, ridged part (2) utilizes several die cavitys that are located in the area of heating surface to form, the ridged part has a length that limits and follows arrangement each other along the fiber direct of travel, the ridged that keeps between two axial adjacent die cavitys partly is used to guide fiber, the die cavity metering depth preferably at 0.1mm between the 5mm, be preferably in 0.5mm between the 3mm.

30. be used to heat the heater of a kind of thermoplastic fibre of advancing (7), wherein the ridged that is configured on the area of heating surface along the heated upper surface of bending and the ground warp of being separated by with it partly guides fiber (7), it is characterized in that, ridged part with respect to the height of the area of heating surface at 0.1mm between the 5mm, preferably at 0.5mm between the 3mm, and preferably utilize several die cavitys that are located in the area of heating surface to form, and ridged part has a length that limits and follows arrangement each other along the fiber direct of travel, and the ridged that keeps between two axial adjacent holes partly is used to guide fiber.

31. be used to heat the heater of a kind of thermoplastic fibre of advancing (7), wherein the ridged that is configured on the area of heating surface along the heated upper surface of bending and the ground warp of being separated by with it partly guides fiber (7), it is characterized in that, the sleeve of the plate-shaped consistent with the shape of heating upper surface is tightened on the heating upper surface, and the ridged part is formed by bulge, and this protuberance is spaced from each other the ground adjoining land vertically and arranges.

32. be used to heat the heater of a kind of thermoplastic fibre of advancing (7), wherein each ridged that is configured on the area of heating surface along the heated upper surface of bending and the ground warp of being separated by with it partly guides fiber (7), it is characterized in that, the plate-shaped sleeve consistent with the heating upper surface tightened on the upper surface of heating, and each ridged part (2) is by being located in the sleeve wall, alignment arrangements and the groove that separates each other constitute in succession vertically, each groove has a length that limits and follows arrangement each other along the direct of travel of fiber, leaves as ring between two grooves adjacent on axially and cuts the ridged part of body to fibre guide.

33. heater as claimed in claim 32 is characterized in that, the lamella thickness value of sleeve is at least 0.1mm, but is no more than 5mm.

34. will show the described heater of 29-33 as right, it is characterized in that, ridged partly comprise one may with the zone of relative fiber direct of travel cross directional variations in the zone of fiber contact, heater and the inlet fibre guide element 8 and the outlet fibre guide element 9 guiding fibers (7) that partly are provided with for the fiber entry of fiber heating region part and fiber outlet are partly advanced on (2) at ridged, and can move also mutually and can so locate transverse to the fiber direct of travel, promptly make contact ratio on ridged part, promptly the fiber contact length on a ridged part is adjustable with the merchant who follows this ridged part noncontact length.

35. as the described heater of claim 29-31, it is characterized in that, ridged partly comprise one may with the zone of relative fiber direct of travel cross directional variations in the zone of fiber contact, heater and the inlet fibre guide element 8 and the outlet fibre guide element 9 guiding fibers (7) that partly are provided with for the fiber entry of fiber heating region part and fiber outlet are partly advanced on (2) at ridged, and can move also mutually and can so locate transverse to the fiber direct of travel, make that promptly strand is adjustable apart from the distance of the upper surface of heating on the ridged part.

36. as the described heater of one of claim 29-33, it is characterized in that, mutually adjust according to the fiber temperature that detects at the heater outlet end, the upper surface of heating and inlet fibre guide element (8) and outlet fibre guide element (9), promptly by change and regulate contact ratio or the fiber and the area of heating surface distance and with the fiber temperature substantial constant maintain on the desired rated value.

37. as the described heater of one of claim 29-33, it is characterized in that, mutually adjust according to the fiber tension that detects in the heater downstream, the upper surface of heating and inlet fibre guide element (8) and outlet fibre guide element (9) promptly maintain on the desired rated value by the distance that changes and regulate between contact ratio or the fiber and the area of heating surface with making the fiber temperature substantial constant.

38., it is characterized in that the upper surface of heating comprises a section as the described heater of one of claim 29-33, to compare with central area apart from the conditions leading fiber of the distance of the upper surface increase of heating, the distance of said increase is greater than 5mm in this section.

39., it is characterized in that heating tube comprises a section as the described heater of one of claim 29-33, in this section, contact the conditions leading fiber that ratio reduces (less than 0.1) significantly to compare with central area.

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