EP2199439B1 - Unité d'étanchéification et dispositif de changement pour un banc d'étirage - Google Patents

Unité d'étanchéification et dispositif de changement pour un banc d'étirage Download PDF

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Publication number
EP2199439B1
EP2199439B1 EP09012558A EP09012558A EP2199439B1 EP 2199439 B1 EP2199439 B1 EP 2199439B1 EP 09012558 A EP09012558 A EP 09012558A EP 09012558 A EP09012558 A EP 09012558A EP 2199439 B1 EP2199439 B1 EP 2199439B1
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EP
European Patent Office
Prior art keywords
condensing unit
traversing device
drafting
unit
compressor unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09012558A
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German (de)
English (en)
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EP2199439A2 (fr
EP2199439A3 (fr
Inventor
Gerd Stahlecker
Karlheinz Huber
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Spindelfabrik Suessen GmbH
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Spindelfabrik Suessen GmbH
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Application filed by Spindelfabrik Suessen GmbH filed Critical Spindelfabrik Suessen GmbH
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Publication of EP2199439A3 publication Critical patent/EP2199439A3/fr
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons

Definitions

  • the invention relates to a compressor unit for a drafting system of a textile machine with at least one compression channel for a finished warped fiber structure and with at least one means for coupling the compressor unit to a along the drafting rollers movable traversing device.
  • the invention further relates to a printing roll unit for a drafting system of a textile machine with a compressor unit, a base body and two pressure roller twins which are received in the base body, wherein the compressor unit at least one means for coupling the compressor unit to a traversing device and at least one compression channel for a finished warped fiber structure having.
  • the invention also relates to a traversing device for a drafting system of a textile machine with a compactor unit, wherein the traversing device comprises an element for coupling the traversing device to a parallel to the drafting rollers extending and displaceable rail and extending from the rail to the region of the output roller pair of the drafting link arm for coupling the compressor unit contains.
  • a compressor unit, a pressure roller assembly and a traversing device of the type mentioned are from the DE 10 2007 006 282 A1 known.
  • a compressor unit, a pressure roller assembly and a traversing device of the type mentioned are from the DE 10 2007 006 282 A1 known.
  • only an iridescent inlet compressor and a compressor coupled thereto with a compression channel for a finished warped fiber structure is provided.
  • the invention has for its object to improve the quality of the compressed fiber structure and the spun yarn while maintaining the traversing.
  • the compressor unit contains at least one guide surface for a fiber structure.
  • the connecting arm is connected to at least one inlet compressor and with at least one preliminary drafting compressor.
  • the fiber structure Due to the additional guide surface for the fiber structure in the main draft zone, the fiber structure is already guided in front of the nip line of the output top roll of the drafting system and optimally prepared for subsequent densification in the nip line of the top top roll of the drafting system following compacting zone. It is advantageous that the compressor unit is mounted on the pressure roller assembly, and thus can be lifted when the load carrier from the output lower roller of the drafting system. When lifting the compressor unit from the output lower roller, the compressor unit is decoupled from the traversing device and coupled again when restarting.
  • the traversing device consists essentially of a connecting arm.
  • a plurality of drafting units is arranged side by side.
  • inlet compressor are arranged upstream, which are mounted on a parallel to the drafting rollers extending rail.
  • the rail is movable along the drafting rollers and usually coupled to a drive at one end of the machine.
  • the rail and the inlet compressor arranged thereon usually have very large tolerances.
  • it is necessary that the fiber strand is fed very precisely to the compression channel in order to achieve optimum compaction results. Such accurate positioning can not be guaranteed by an inlet compressor mounted on the rail with the usual, large tolerances.
  • the traversing device therefore contains a connecting arm extending from the rail to the region of the output roller pair of the drafting system.
  • the connecting arm has means for coupling the compressor unit.
  • the connecting arm is connected to at least one inlet compressor and to at least one preliminary draft compressor.
  • the connecting arm of the traversing device thus forms a basis on which the inlet compressor and the preliminary draft compressor can be arranged with small tolerances.
  • the connecting arm also positions over the means for Coupling the compressor unit so that the guide surface for the fiber strand in the main draft zone and the compression channel for a finished warped fiber strand are precisely positioned for the intake and pre-draft compressor.
  • a drafting system with an oscillatable fiber structure is formed in which all the compressors are positioned precisely in relation to each other and move in synchrony with one another.
  • the orientation of the compressor to each other does not change during the traversing movement. It can thereby achieve the advantages of traversing, namely a long life of the top rollers, with a very good quality of warped and compacted fiber structure, as well as the subsequently produced yarn.
  • the means for coupling is formed by a recess on the compressor unit, in which preferably a tab of the traversing device can engage.
  • the means for coupling advantageously have an insertion bevel for positioning the compressor unit with respect to the traversing device.
  • the insertion bevel is arranged on the sides of the recess for the tab of the connecting arm.
  • the chamfer causes the compressor unit is automatically coupled to the traversing device when placed on the drafting sub-roller, even if the compressor unit has been moved in the off-state axially to the top rollers, and is no longer in the same position as the traversing device.
  • the insertion bevel causes the compressor unit to be automatically displaced when placed on the lower roller so that the tab of the traversing device finds its way into the recess on the compressor unit.
  • the pressure roller unit has at least one means for attaching the compressor unit to the pressure roller assembly, wherein the compressor unit is movably mounted on the pressure roller assembly.
  • the compressor unit preferably includes a receptacle for a means for securing the compressor unit to the platen assembly.
  • the pressure roller unit preferably has an axial guidance for the compressor unit. As a result, the compressor unit is guided very well during the displacement axially to the Druckwalzenzwillingen during traversing movement.
  • the main body of the pressure roller assembly may have at least one stop surface for positioning the compressor units in the circumferential direction of a drafting roller which can be brought into contact with the pressure rollers.
  • the compressor unit then includes an associated stop surface for positioning the compressor unit in the circumferential direction of the drafting roller. The stop surfaces for positioning in the circumferential direction are part of the axial guide.
  • the pressure roller assembly includes a loading element for generating a bearing force on the bearing surfaces of the compressor unit.
  • the loading means is preferably designed as a leaf spring and / or as a magnet.
  • the compressor unit may be movably mounted on the pressure roller assembly via the loading element.
  • the compressor unit advantageously includes means for securing the compressor unit to the platen assembly.
  • a part of the axial guide is arranged on the loading means.
  • the axial guide may preferably be arranged at the free end of the leaf spring.
  • the compressor unit is designed in several parts.
  • the compressor unit may include a holder and at least one wear-resistant component.
  • the wear-resistant component is advantageously immovably connected to the holder.
  • the compressor unit contains two wear-resistant components, each having a bearing surface for a drafting roller, wherein the wear-resistant components are arranged on the holder, that the two bearing surfaces are spaced apart in the circumferential direction of the drafting roller.
  • a multi-part compressor unit has the advantage that the wear-resistant component, which contains the compression channel for a finished distorted fiber structure, can be made very small.
  • the outer contour of the wear-resistant component can be substantially simplified.
  • the wear-resistant components is thus much easier to produce.
  • the wear-resistant component is advantageously made of a wear-resistant material, such as ceramic. In different areas with different functions can be selected by the multiparty each optimal for the function material.
  • the compressor unit is provided at the points with a wear-resistant component, which are subject to increased wear, for example because they come into contact with the fiber structure.
  • the immovable connection of a wear-resistant component to the holder creates a compressor unit which has a high degree of precision. A compressor unit made with sufficient accuracy can no longer lose its accuracy.
  • the compressor unit is understood in the sense of the word that the "unit” can be formed by an assembly consisting of several individual parts, and their items are permanently connected to each other. However, the items do not necessarily have to be immovably connected to each other and can also be disassembled.
  • the "unit” represents an independently tradable item.
  • a compressor unit with two mutually spaced circumferentially bearing surfaces has the advantage that the compressor unit rests very stable on the drafting roller and is positioned very accurately.
  • the circumferential surface of the drafting roller forms a sliding surface for the compressor unit, on which the compressor unit is displaced in the traversing in the axial direction of the drafting rollers.
  • the compressor unit has at least one guide means for a core thread.
  • a core thread for example made of an elastic filament, is fed to the fiber structure distorted in the drafting system.
  • the feeding of the core thread is preferably carried out in the end region of the compression zone, just before the terminal zone terminating the compression zone.
  • the compressor unit advantageously contains at least one guide means for a core thread.
  • the core thread can be positioned very precisely with respect to the compaction channel for the finished warped fiber strand by the guide means on the compressor unit. Even with the traversing of the compressor unit, the core thread is always fed in the exact position, since the guide means moves so with the compressor unit.
  • the traversing device has a joint between the element for coupling to the rail and the connecting arm.
  • the connecting arm preferably runs on the upper rollers facing side of the lower rollers through the drafting system. When the load carrier is swung open and the upper rollers are lifted, the connecting arm can now also be swung up for maintenance purposes and the areas below the compressors are easily accessible.
  • the element for coupling to the rail advantageously acts non-positively. The traversing device can thereby be very easily clamped onto an existing rail and can be retrofitted in older drafting systems, without the costly adaptation work on the rail are necessary.
  • the traversing device can be used for two adjacent drafting.
  • the connecting arm is connected to two inlet compressors and two Vorverzugsverêtm, wherein the two Vorverzugsverêtr preferably have the same distance from each other, as the two inlet compressor.
  • the compressor unit can also be used for two adjacent drafting systems.
  • the compressor unit then preferably contains three or four wear-resistant components. Two wear-resistant components are arranged on the holder, that the two bearing surfaces are spaced apart from each other in the axial direction of the drafting roller. Two bearing surfaces spaced apart in the axial direction of the drafting roller cause a particularly good and stable positioning of the compressor unit on the drafting roller. The stable positioning reliably prevents lifting of the compressor unit from the drafting roller by machine vibrations and vibrations.
  • the traversing device has a positioning tab for an inlet compressor and the inlet compressor includes a guide surface for the rail.
  • the inlet compressor is thus displaceable on the rail and is positioned by the positioning tab to the connecting arm.
  • an inlet compressor is arranged slightly offset from a pre-draft compressor. It is thereby achieved that the fiber structure always lies in a defined manner against a lateral guide surface of the preliminary drafting compressor in the drafting zone. Surprisingly, this can further improve the quality of the spun yarn.
  • the positioning of the inlet compressor with respect to the Vorverzugsverêtr can be easily changed by an exchange of the positioning tab, and adapt to the requirements.
  • FIGS. 1 to 5 is very schematically shown a drafting 1 a textile machine.
  • a drafting 1 adjacent drafting 1 ' is shown.
  • the drafting system 1 is designed as a double apron drafting system.
  • the drafting device 1 is arranged on a spinning machine, preferably on a ring spinning machine.
  • the drafting system 1 warps in a conventional manner a fed in the transport direction A fiber strand 2 of staple fibers to the desired fineness.
  • the fiber structure 2 is warped by a plurality of pairs of rollers arranged in succession in the transport direction A, which are drivable in the transport direction A with increasing peripheral speed.
  • the delay of the fiber structure 2 is completed.
  • the upper roller 4 is provided with a cover of a rubber-elastic material and is pressed against the lower roller 3, so that the fiber structure 2 at the nip line 5 is clamped between the drafting rollers 3 and 4.
  • FIG. 5 are the output sub-roller 3 upstream sub-rollers 6 and 7 recognizable.
  • the top rollers are in FIG. 5 not shown.
  • the pair of rollers 6, 61 upstream of the pair of outfeed rollers 3, 4 are associated with guide straps 62 and 63 in a manner known per se.
  • the ceremoniessriemchen 62 wraps around the lower roller 6 and a Unterriemchen Entrystisch, not shown.
  • the ceremoniessriemchen 63 wraps around the top roller 61 and is guided by a cage, not shown.
  • the guide straps 62, 63 guide the fiber structure 2 in the main drafting zone of the drafting system 1, which extends from the nip line of the pair of rollers 6, 61 to the nip line 5.
  • the upper roller 4, 61 and the lower roller of the input lower roller 7 and not shown upper roller are formed as so-called Druckwalzenzwillinge.
  • a pair of printing rolls consists of two top rollers which are assigned to adjacent drafting units 1 and 1 'and which have a common axis 9.
  • the top rollers are held in a swing-open load carrier 8.
  • the two top rollers of the pressure roller twin 4 are designed as "Loswalzen", ie the two top rollers are freely rotatably mounted on the non-rotating axis 9.
  • the load carrier 8 is arranged in the middle between two adjacent drafting units 1 and 1 'and holds the pressure roller twin 4 at the axis 9.
  • the remaining top rollers are constructed and arranged analogously to the pressure roller twin 4.
  • the Under rollers 3, 6, 7 are formed as over a plurality of adjacent drafting 1, 1 'continuous drafting rollers, as in FIG. 5 is indicated.
  • the drafting system 1 is also referred to as a "three-cylinder drafting
  • a twisting element not shown, for example, a ring spindle, fed and there is the finished yarn 10.
  • the finished warped fiber structure 11 is passed through a compaction zone 12 in which the fiber structure 11 is compacted and compacted.
  • the finished distorted fiber structure 11 rests on the peripheral surface 13 of the lower roller 3 and is thus transported through the compression zone 12.
  • the fiber structure 11 is guided through a compression channel 14.
  • the compression channel 14 is designed tunnel-shaped and open to the lower roller 3.
  • the lower roller 3 is associated with a second upper roller 15, which forms a nip 16 with the lower roller 3, which ends the compression zone 12. Following the nip line 16, the compressed fiber structure is twisted into a yarn 10, in which it is fed in withdrawal direction B to a swirl element (not shown). The nip 16 forms a spin stop and ensures that the fiber structure 11 remains free of rotation in the compression zone 12.
  • the printing roll twin 15 forms together with the printing roll twin 4 a pressure roller assembly 18.
  • the pressure roller assembly 18 includes a base body 19 in which the two pressure roller twins 4, 15 are accommodated on their axes 9, 17.
  • the pressure roller assembly 18 forms a structural unit which is replaceably mounted on the load carrier 8.
  • the pressure roller twins 4 and 15 are arranged in the pressure roller assembly 18 so that the top rollers of the pressure roller twins 4 and 15 do not touch each other and that the top rollers are placed on a common drafting roller 3.
  • the axis 9 and 17 are advantageously aligned as parallel as possible in the base body 19.
  • the attachment of the pressure roller assembly 18 is preferably via the axis 9, which is accommodated in a receptacle 81 of the load carrier 8.
  • the load carrier 8 loaded via the receptacle 81 the pressure roller twin 4 in the middle of the axis 9.
  • the attachment of the pressure roller assembly 18 on the load carrier 8 preferably allows a Pendulum movement of the pressure roller assembly 18 about two mutually perpendicular imaginary axes, both of which are perpendicular to the axis 9.
  • the printing roll unit 18 also includes a compressor unit 20 containing the compression channel 14.
  • the compressor unit 20 is arranged in the region between the top rollers 4 and 15.
  • the compactor unit 20 is movably mounted on the printing drum assembly 18, at least one means 21 for fixing the compactor unit 20 to the printing drum assembly 18 is provided.
  • the means 21 for fastening cause the compressor unit 20 does not accidentally fall out of the pressure roller assembly 18 and does not move uncontrollably on the pressure roller assembly 18.
  • the connecting means 21 enable the transmission of at least one force from the pressure roller assembly 18 to the compressor unit 20.
  • the means 21 for fastening are attached to the main body 19 of the pressure roller assembly 18 or to a part of a pressure roller twin 4 or 15. In the case of an existing older spinning machine with conventional drafting, it is possible to remove the previous output top roller 4 from the drafting system 1 and replace it with a pressure roller assembly 18.
  • the existing spinning machine can be converted to a drafting system 1 with compression zone 12, so that after the conversion, a yarn 10 with improved quality can be produced.
  • a leaf spring 22 may be provided.
  • the leaf spring 22 is attached to the main body 19 of the pressure roller assembly 18 and is supported by its free end on the load carrier 8 from. In an embodiment, not shown, it may also be advantageous that the leaf spring 22 is mounted on the load carrier 8 and presses with its free end on the body 19.
  • a guide surface 23 for the fiber structure 2 is provided in the main draft zone between the guide straps 62, 63 and the nip line 5.
  • the guide surface 23 improves the quality of the distorted fiber structure 11.
  • the guide surface 23 is arranged in the transport direction A upstream of the compression channel 14 on the compressor unit 20.
  • the guide surface 23 serves to guide the fiber structure 2 downstream of the guide straps 62, 63 and upstream of the nip line 5.
  • the guide surface 23 is preferably funnel-shaped, as in FIG. 2 recognizable.
  • a funnel-shaped guide surface 23 supports the compression of the fiber structure 11 already before the compression zone 12.
  • the compressor unit 20 contains a guide surface 24 for the yarn 10.
  • the guide surface 24 is disposed downstream of the compression channel 14 and serves to guide the yarn 10 following the nip line 16.
  • the guide surface 24 may be formed by a rod which is inserted into a holder 25 of the compressor unit 20.
  • the compression unit 20 can be used for two adjacent drafting systems 1 and 1 ', see in particular FIG. 2 ,
  • the compression unit 20 includes two compression channels 14, 14 'for finished warped fiber composites 11, 11'.
  • the compressor unit 20 includes a first bearing surface 31 for positioning the compressor unit 20 on the drafting roller 3, which is arranged in the region of the compression channel 14 and concavely curved.
  • the compressor unit 20 has a second bearing surface 32 for the drafting system 3, which is arranged in the region of the compression channel 14 '.
  • the compressor unit 20 includes two further bearing surfaces 33 and 34, which are spaced in the circumferential direction C of the drafting roller 3 from the bearing surfaces 31 and 32.
  • the distance in the circumferential direction C of the bearing surfaces 31 and 33 is preferably 7.5 mm to 9, 5 mm in order to ensure a stable support of the compressor unit 20.
  • the first bearing surface 31 is spaced from the second bearing surface 32 only in the axial direction D of the drafting roller 3 which can be brought into contact with the bearing surfaces.
  • the third bearing surface 33 is spaced only in the axial direction D from the fourth bearing surface 34. As seen in the axial direction D, the third bearing surface 33 and the fourth bearing 34 are approximately the same distance apart from each other as the first bearing surface 31 and the second abutments 32.
  • a guide surface 23 ' is shown in FIG Area of the fourth bearing surface 34 is provided.
  • the guide surfaces 23 and 23 ' are also designed as tunnel-shaped compression channels, which are open to the support surface 33 and 34, respectively.
  • the guide surface 23, 23 ' cause a compression of the fiber structure 2 in the main drafting zone of the drafting system.
  • the guide surfaces 23 may be the fiber structure 2 if necessary deflect something out of the stretching field plane.
  • the guide surface 23 deflects the fiber structure slightly from the shortest imaginary connecting line between the exit of the guide straps 62, 63 and the nip line 5.
  • the fiber structure 2 then wraps around a part of the convex guide surface 23.
  • the two guide surfaces 23, 23 'for the fiber structure 2, 2' about the same distance from each other as the two compression channels 14, 14 'for the finished warped fiber structure 11, 11 '.
  • the support surface 33 is separated by the tunnel-shaped guide surface 23 into two parts that no longer touch. Nevertheless, within the meaning of the present patent application, only one bearing surface 33 in the area of the guide surface 23 is used. The same applies to the analogous conditions in the area of the guide surface 23 'and the compression channels 14 and 14'.
  • the bearing surfaces 31, 32, 33 and 34 are concave, with all the curvatures are adapted to the peripheral surface of a common cylinder.
  • Cylinder is understood here as a designation of a geometric base body, which occupies the place of the drafting roller 3, which is later present in the operating state, during the production of the compressor unit 20.
  • the compressor unit 20 is designed in several parts and contains a holder 25 and four wear-resistant components 41, 42, 43 and 44.
  • the wear-resistant components may preferably immovably be connected to the holder 25.
  • a support surface 31, 32, 33, 34 for positioning the compressor unit 20 on the lower roller 3 is arranged.
  • the wear-resistant components 41 and 42 have at least one compression channel 14 and 14 'for a completely distorted fiber structure 11, 11'.
  • the wear-resistant components 43 and 44 each have a guide surface 23, 23 'for a fiber structure 2, 2'.
  • the holder 25, which practically represents a basic body of the compressor unit 20, contains a receptacle 26 for the wear-resistant component 41.
  • the receptacle 26 is formed by a pin 53 which protrudes from the holder 25.
  • the compressor unit 20 includes a rod 54.
  • the rod 54 is inserted into the holder 25 and a protruding end of the rod 54 forms the pin 53.
  • the wear-resistant member 41 has a receptacle 45 for the protruding from the holder 25 pin 53.
  • the receptacle 45 is formed by a blind hole.
  • the wear-resistant member 41 is preferably made of ceramic.
  • the worn component 41 includes a second receptacle 45 '.
  • the receptacle 45 ' is located on the opposite side as the receptacle 45.
  • the wear-resistant "component 41 can also be used as a wear-resistant component 42 by the two receptacles 45 and 45' 41 in the drafting 1 'as a wear-resistant component 42nd used, it is attached to the receptacle 45 'to the holder 25.
  • the blind hole 45 then remains empty.
  • the rod 54 is executed by the drafting system 1 continuously to the drafting 1 '.
  • the rod 54 is preferably made of hardened steel.
  • the rod 54 extends between two adjacent drafting units 1 and 1 'associated wear-resistant components 41 and 42. The ends of the rod 54 project into the wear-resistant components 41 and 42 into it.
  • the rod 54 has at least one area of a diameter of 2 mm or more, in particular of 3 mm or more.
  • the wear-resistant components 43 and 44 are designed analogously to the wear-resistant component 41. Instead of the compression channel 14, a guide surface 23 is provided.
  • the compressor unit 20 includes a second rod 56 whose ends 55 - analogous to the rod 54 - protrude from the pin-shaped holder 25 to receive the wear-resistant components 43 and 44.
  • the compressor unit 20 contains a dashed line (dashed two-dot line) shown stabilizing member 57.
  • the stabilizing member 57 is not directly connected to the holder 25.
  • the designed as a kind of "yoke" stabilizing member 57 connects two wear-resistant components 42 and 44 with each other.
  • the stabilizing component 57 increases the stability of the cantilevered wear-resistant components 42 and 44 with increased loads in the circumferential direction C.
  • the stabilizing component 57 may preferably be a correspondingly curved round profile.
  • the stabilizing member 57 may preferably be mounted in the unused receiving or blind holes 45 of the wear-resistant components 42 and 44.
  • the wear-resistant components 41 and 43 can be connected to a stabilizing component, not shown.
  • the compressor unit 20 is preferably produced in such a way that the wear-resistant components 41, 42, 43, 44 are fastened to the holders 26 on the holder 25 with an adhesive.
  • the wear-resistant components can be aligned after placement on the receptacles 26 until the adhesive hardens.
  • the compressor unit 20 can be placed on a roller whose diameter corresponds to the drafting roller 3.
  • the wear-resistant components are thereby aligned with their bearing surfaces 31, 32, 33, 34 exactly on a peripheral surface of a cylinder.
  • a connecting means 21 in the form of a leaf spring 58 is provided.
  • the leaf spring 58 is at the same time a loading element for generating a bearing force on the support surfaces 31, 32, 33, 34.
  • the leaf spring 58 is fastened with a screw 59 on the main body of the pressure roller assembly 18. Together with the leaf spring 58, the screw 59 can also attach the leaf spring 22 to the base body 19.
  • the compressor unit 20 may include a magnet 29 shown in dashed lines.
  • the leaf spring 58 has an axial guide 70 for the compressor unit 20.
  • the axial guide 70 is configured in the form of a cylinder pin 71 attached to the leaf spring 58.
  • the compressor unit 20 has a receptacle 28 for the connecting means 21.
  • the receptacle 28 engages the cylindrical pin 71 of the axial guide 70.
  • the compressor unit 20 is thereby pivotable about the axis of the pin 71 and can be aligned when placing the pressure roller assembly 18 on the lower roller 3, so that the bearing surfaces 31, 32, 33, 34 well the peripheral surface 13 rest.
  • the receptacle 28 includes a clip 27, which ensures the interchangeability of the compressor unit 20 on the pressure roller assembly 18 and at the same time forms a captive, so that the compressor unit 20 does not accidentally fall out of the pressure roller assembly 18.
  • the receptacle 28 is arranged centrally between the wear-resistant components 41 and 42, so that the loading force of the loading means 58 is evenly distributed.
  • the compressor unit 20 For positioning the compressor unit 20 in the circumferential direction C, the compressor unit 20 has a stop surface 51, which is preferably arranged centrally between the wear-resistant components 41 and 42.
  • the stop surface 51 is supported on the base body 19 or on the axis 17.
  • the surface 52 for supporting the abutment surface 51 is designed on the base body 19 such that it has a constant radius about the center line of the pressure roller axis 17. It is thereby ensured even then a correct position of the compressor unit 20 when the top rollers 4, 15, in particular the top roller 4 are reground when worn on their elastic covers.
  • the stop surfaces 51 and 52 are also part of the axial guide 70 for the compressor unit 20.
  • the compressor unit is thereby movably received along the drafting roller 3 in the pressure roller assembly 18.
  • the compressor unit 20 has means 72 for coupling to a traversing device 73.
  • the means 72 for coupling the compressor unit 20 to the traversing device 73 is arranged on the holder 25.
  • the means 72 for coupling is provided by a recess 74 in the holder 25 formed.
  • the recess includes insertion bevels 75 for positioning the compressor unit 20 with respect to the traversing device 73.
  • the traversing device 73 includes a tab 76 in which the recess 74 engages. When swinging the load carrier 8 and lifting the pressure roller assembly 18 of the drafting roller 3, the traversing device 73 remains with the tab 76 in the drafting plane.
  • the compressor unit 20 is decoupled when lifted from the traversing device 73. It may now happen that the lifted off from the lower roller 3 compressor unit 20 in the pressure roller assembly 18 along the upper roller 4 shifts a bit.
  • the compressor unit 20 When replacing the pressure roller assembly 18 on the lower roller 3, the position of the recess 74 is no longer consistent with the position of the tab 76.
  • the compressor unit 20 is connected to the means 72 for coupling again with the traversing device 73, when the load carrier 8 is pivoted down, the insertion bevels 75 are provided which move the compressor unit 20 again in the axial direction D that the tab 76 in the recess 74th into place. The compressor unit 20 is then taken back by the reciprocating in the axial direction D traversing device 73.
  • a core yarn 46 can be fed to the fiber structure in the drafting system 1, which core yarn is then incorporated into the yarn 10 together with the staple fibers of the fiber structure 2.
  • the core thread 46 is preferably fed in the region of the compression zone 12 shortly before the nip line 16. In the axial direction D, the core thread 46 must be fed very exactly to the fiber structure 11 so that the integration into the yarn 10 takes place in an optimum manner. So that the exact supply is ensured in a traversing of the compressor unit 20, at least one guide means 47 for the core thread 46 is provided on the compressor unit 20, in particular in the FIGS. 1 and 4 is shown.
  • the guide means 47 is attached as an extension to the wear-resistant member 41 and includes a slot 48 for positioning the core thread in the axial direction D.
  • the slot 48 is designed substantially V-shaped.
  • the core thread 46 is preferably positioned by the slot 48 only in the axial direction D, and otherwise not deflected further, so that no tilting moment acts on the wear-resistant component 41.
  • the wear-resistant component 42 may have an analogously configured guide means 47.
  • the compressor unit guide means 47 ' which in FIG. 1 are indicated by a dash-two-dot line.
  • the guide means 47 ' may be analogous to the guide means 47 be designed.
  • the input lower roller 7 of the drafting system 1 is a parallel to the drafting rollers extending rail 77 is arranged.
  • the rail 77 is displaceable in the axial direction D.
  • the rail 77 is connected to a traversing drive, not shown, which generates the movement in the axial direction D.
  • the rail 77 is provided with inlet compressors 78 and 78 'for feeding an unillustrated roving to the pair of intake rollers of the drafting system.
  • the inlet compressors 78 are subject to very large tolerances, in particular the distances of the inlet compressors 78 in the axial direction D are often incorrectly inaccurate. This is also unproblematic in conventional drafting systems, since it does not depend on a precise position of the fiber structure 2 in the axial direction D.
  • a conventional drafting system is equipped with a compressor unit 20
  • the original inlet compressors 78 are too inaccurate to ensure exact feeding of the fiber structure 2 to the guide surface 23 or to the compression channel 14.
  • the old inlet compressors are thus removed and replaced by new, corresponding to the inventive traversing device 73 inlet compressor 78, 78 '.
  • the traversing device 73 essentially consists of a connecting arm 79 which extends from the rail 77 into the area of the pair of delivery rollers 3, 4.
  • the traversing device includes an element 90 for coupling the traversing device 73 to the rail 77.
  • the element 90 for coupling acts non-positively.
  • the member 90 includes a clamping means for clamping to the rail 77 with a screw 91.
  • the connecting arm 79 is connected to the inlet compressor 78 and the inlet compressor 78 '.
  • the link arm is connected to a pre-draft compressor 92 and a pre-draft compressor 92 '.
  • the Vorverzugsverêtr 92 and 92 ' lead and compact the fiber structure 2 in the area between the roller 7 and the roller 6.
  • the Vorverzugsverêtsverêtr 92, 92' are arranged upstream of the nip of the rollers 6 and 61.
  • the two Vorverzugsverêtr 92 and 92 ' are advantageously formed as a plastic part and united in a component which is attached to the connecting arm 79.
  • the connecting arm 79 includes in its the output lower roller 3 end region facing the tab 76, which serves for coupling the compressor unit 20 to the traversing device 73.
  • the connecting arm 79 extends on the upper rollers 4, 61 facing side of the lower rollers 3, 6, 7.
  • the inlet compressor 78 can thereby be supported directly on the rail 77.
  • the traversing device contains a positioning tab 94 for the inlet compressors 78, 78 '.
  • the positioning tab 94 defines the spacing of the inlet compressors 78 and 78 'from each other.
  • the positioning tab 14 is fastened with the screw 91 on the traversing device.
  • the positioning tab has recesses in its end regions, which interact with pins 95 on the inlet compressors 78, 78 ', so that the spacing of the inlet compressors 78 and 78' is defined in a form-fitting manner with respect to one another.
  • the inlet compressors 78, 78 ' are at the same distance from one another as the precompressor compressors 92, 92'.
  • the inlet compressor 78 is slightly offset from the Vorverzugsverêtr 92 positioned.
  • the inlet compressor 78 is then arranged offset in the axial direction D to the Vorverzugsverêtr 92 so that the fiber structure 2 increasingly abuts a lateral guide surface of the Vorverzugsverêtrs 92.
  • Different positions of the inlet compressor 78 with respect to the Vorverzugsverêtr 92 can be realized very easily by the replacement of the positioning tab 94.
  • the traversing device 73 has a hinge 96 between the element 90 for coupling to the rail 77 and the connecting arm 79.
  • the hinge 96 of the connecting arm 79 can be pivoted up when the load carrier 8 is pivoted up and the top rollers and the compressor unit 20 is lifted from the lower rollers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Claims (15)

  1. Unité de condensation pour un banc d'étirage d'une machine textile, avec au moins un canal de condensation (14) pour un ensemble de fibres étiré (11) et avec au moins un moyen (72) pour coupler l'unité de condensation avec un dispositif de va-et-vient (73) mobile le long des cylindres d'étirage (3), caractérisée en ce que l'unité de condensation (20) comporte au moins une surface de guidage (23) pour un ensemble de fibres (2).
  2. Unité de condensation selon la revendication 1, caractérisée en ce que le moyen (72) pour le couplage avec un dispositif de va-et-vient (73) est formé par un évidement (74) pour une patte (76) du dispositif de va-et-vient (73) et/ou comporte au moins un chanfrein d'introduction (75) pour le positionnement de l'unité de condensation (20) par rapport au dispositif de va-et-vient (73).
  3. Unité de condensation selon la revendication 1 ou 2, caractérisée en ce que l'unité de condensation (20) se présente sous une forme à plusieurs parties et qu'elle comporte un support (25) et au moins un composant résistant à l'usure (41 ; 42 ; 43 ; 44), sachant que, de préférence, au moins un moyen (72) pour le couplage de l'unité de condensation (20) avec un dispositif de va-et-vient (73) est disposé au support (25).
  4. Unité de condensation selon la revendication 3, caractérisée en ce que l'unité de condensation (20) comporte au moins deux composants résistants à l'usure (41, 43), avec respectivement une surface d'appui (31, 33) pour un cylindre d'étirage (3), sachant que les composants résistants à l'usure (41, 43) sont disposés au support (25) de telle manière que les deux surfaces d'appui (31, 33) soient distancées l'une de l'autre dans le sens circonférentiel (C) des cylindres d'étirage (3).
  5. Unité de condensation selon l'une des revendications 1 à 4, caractérisée en ce que l'unité de condensation (20) comporte un élément de charge, en particulier un aimant (29).
  6. Ensemble de cylindres presseurs pour un banc d'étirage d'une machine textile avec une unité de condensation, un corps de base et deux paires de cylindres presseurs, qui sont logées dans le corps de base, sachant que l'unité de condensation comporte au moins un moyen pour coupler l'unité de condensation avec un dispositif de va-et-vient et au moins un canal de condensation pour un ensemble de fibres étiré, caractérisé en ce que l'ensemble de cylindres presseurs (18) comporte une unité de condensation (20) avec au moins une surface de guidage (23) pour un ensemble de fibres (2) selon l'une des revendications 1 à 5.
  7. Ensemble de cylindres presseurs selon la revendication 6, caractérisé en ce que l'ensemble de cylindres presseurs (18) comporte au moins un moyen (21) pour la fixation de l'unité de condensation (20) à l'ensemble de cylindres presseurs (18), sachant que l'unité de condensation (20) est montée de manière mobile à l'ensemble de cylindres presseurs (18), et/ou l'ensemble de cylindres presseurs (18) présente un guidage axial (70) pour l'unité de condensation (20).
  8. Ensemble de cylindres presseurs selon la revendication 6 ou 7, caractérisé en ce que les moyens (21) pour la fixation de l'unité de condensation (20) à l'ensemble de cylindres presseurs (18) comportent un élément de charge (58) pour générer une force d'appui sur des surfaces d'appui (31 ; 32 ; 33 ; 34) de l'unité de condensation (20) et/ou l'unité de condensation (20) est fixée de manière mobile à l'ensemble de cylindres presseurs (18) via un élément de charge (58) pour la génération d'une force d'appui sur les surfaces d'appui (31, 32, 33, 34) de l'unité de condensation.
  9. Dispositif de va-et-vient pour un banc d'étirage d'une machine textile avec une unité de condensation selon l'une des revendications 1 à 5, sachant que le dispositif de va-et-vient comporte un élément pour le couplage du dispositif de va-et-vient à un rail déplaçable s'étendant parallèlement aux cylindres d'étirage ainsi qu'un bras de liaison pour le couplage de l'unité de condensation s'étendant du rail jusque dans la zone de la paire de cylindres délivreurs du banc d'étirage, caractérisé en ce que le bras de liaison (79) est relié à au moins un condensateur d'entrée (78 ; 78') et à au moins un condensateur d'étirage préparatoire (92 ; 92').
  10. Dispositif de va-et-vient selon la revendication 9, caractérisé en ce que le dispositif de va-et-vient (73) comporte une patte (76) pour le couplage de l'unité de condensation (20) et/ou une articulation (96) entre l'élément (90) pour le couplage au rail (77) et le bras de liaison (79).
  11. Dispositif de va-et-vient selon la revendication 9 ou 10, caractérisé en ce que le bras de liaison (79) s'étendant sur la face des cylindres inférieurs (3, 6, 7) du banc d'étirage (1) orientée vers les cylindres supérieurs (4, 61).
  12. Dispositif de va-et-vient selon l'une des revendications 9 à 11, caractérisé en ce que l'élément (90) pour le couplage au rail (77) agit par complémentarité de forces.
  13. Dispositif de va-et-vient selon l'une des revendications 9 à 12, caractérisé en ce que le dispositif de va-et-vient (73) est utilisable pour deux bancs d'étirage adjacents (1, 1') et il est relié à deux condensateurs d'entrée (78, 78') et à deux condensateurs d'étirage préparatoire (92, 92'), sachant que, de préférence, les deux condensateurs d'étirage préparatoire (92, 92') présentent la même distance l'un de l'autre que les deux condensateurs d'entrée (78, 78').
  14. Dispositif de va-et-vient selon l'une des revendications 9 à 13, caractérisé en ce qu'un condensateur d'entrée (78) est disposé à une position légèrement décalée par rapport à un condensateur d'étirage préparatoire (92).
  15. Dispositif de va-et-vient selon l'une des revendications 9 à 14, caractérisé en ce que le dispositif de va-et-vient (73) comporte une patte de positionnement (94) pour un condensateur d'entrée (78) et le condensateur d'entrée (78) comporte une surface de guidage (93) pour le rail (77).
EP09012558A 2008-12-19 2009-10-05 Unité d'étanchéification et dispositif de changement pour un banc d'étirage Active EP2199439B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008064531A DE102008064531A1 (de) 2008-12-19 2008-12-19 Verdichtereinheit und Changiereinrichtung für ein Streckwerk

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EP2199439A2 EP2199439A2 (fr) 2010-06-23
EP2199439A3 EP2199439A3 (fr) 2011-02-23
EP2199439B1 true EP2199439B1 (fr) 2012-06-20

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EP (1) EP2199439B1 (fr)
CN (1) CN101748526B (fr)
BR (1) BRPI0904568B1 (fr)
DE (1) DE102008064531A1 (fr)
ES (1) ES2389094T3 (fr)

Cited By (2)

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CN106012127A (zh) * 2015-03-27 2016-10-12 里特机械公司 一种用于纺纱机的牵伸机构的压缩单元
DE102018129210A1 (de) 2018-11-20 2020-05-20 Maschinenfabrik Rieter Ag Verdichtereinheit für ein Streckwerk einer Textilmaschine

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DE102012003179A1 (de) * 2012-02-17 2013-08-22 Oerlikon Textile Components Gmbh Streckwerk zum Verziehen eines Vorgarns
DE102015110980A1 (de) * 2015-07-07 2017-01-12 Rieter Ingolstadt Gmbh Streckwerk mit mehreren Faserbandführungen
DE102015112662A1 (de) * 2015-07-31 2017-02-02 Maschinenfabrik Rieter Ag Verdichtereinheit für ein Streckwerk einer Textilmaschine
DE102017113045A1 (de) * 2016-06-23 2017-12-28 Maschinenfabrik Rieter Ag Changiervorrichtung für ein Streckwerk einer Textilmaschine sowie ein Verfahren für deren Betrieb
DE102018118923A1 (de) * 2018-08-03 2020-02-06 Maschinenfabrik Rieter Ag Verfahren zum Abstimmen einer Vliesdüse auf ein Faserband
JP2020066820A (ja) * 2018-10-24 2020-04-30 村田機械株式会社 トラバース装置、ドラフト装置及び紡績機
DE102018126635A1 (de) * 2018-10-25 2020-04-30 Maschinenfabrik Rieter Ag Verdichtereinheit, Druckwalzenaggregat und Streckwerk
DE102019113676A1 (de) * 2019-05-22 2020-11-26 Maschinenfabrik Rieter Ag Verdichtereinheit für ein Streckwerk einer Textilmaschine
CN110846750B (zh) * 2019-11-19 2020-11-03 安徽双盈纺织有限公司 一种纺纱机械导纱装置

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DE4227492A1 (de) * 1992-08-20 1994-02-24 Fritz Stahlecker Faserbandführungsvorrichtung für Streckwerke von Spinnereimaschinen
DE4430835A1 (de) * 1994-08-31 1996-03-07 Schurr Stahlecker & Grill Vorrichtung zur Herstellung von Core-Garn
DE19501163C1 (de) * 1995-01-17 1996-04-18 Zinser Textilmaschinen Gmbh Streckwerk für Spinnmaschinen mit einer Leiteinrichtung zum Zuführen eines Kernfadens
DE19537470A1 (de) * 1995-10-07 1997-05-07 Stahlecker Fritz Streckwerk für Spinnereimaschinen
CN100402722C (zh) * 2001-11-16 2008-07-16 里特机械公司 牵伸和集合纤维条的装置
DE102007006282A1 (de) 2007-02-01 2008-08-07 Wilhelm Stahlecker Gmbh Streckwerk mit Verdichtungszone
DE102007024234B4 (de) * 2007-05-21 2022-06-23 Wilhelm Stahlecker Gmbh Streckwerk zum Verziehen eines Faserverbandes
CN101235562B (zh) * 2008-03-03 2010-06-02 上海市毛麻纺织科学技术研究所 连杆同步横动集合器装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106012127A (zh) * 2015-03-27 2016-10-12 里特机械公司 一种用于纺纱机的牵伸机构的压缩单元
DE102018129210A1 (de) 2018-11-20 2020-05-20 Maschinenfabrik Rieter Ag Verdichtereinheit für ein Streckwerk einer Textilmaschine
EP3656899A1 (fr) 2018-11-20 2020-05-27 Maschinenfabrik Rieter AG Compresseur pour un banc d'etirage d'une machine textile

Also Published As

Publication number Publication date
CN101748526B (zh) 2014-03-05
CN101748526A (zh) 2010-06-23
EP2199439A2 (fr) 2010-06-23
ES2389094T3 (es) 2012-10-23
DE102008064531A1 (de) 2010-07-01
BRPI0904568A2 (pt) 2011-09-06
BRPI0904568B1 (pt) 2020-01-21
EP2199439A3 (fr) 2011-02-23

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