EP0106067A2 - Appareil pour la fabrication de fils frisés par torsion - Google Patents

Appareil pour la fabrication de fils frisés par torsion Download PDF

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Publication number
EP0106067A2
EP0106067A2 EP83108162A EP83108162A EP0106067A2 EP 0106067 A2 EP0106067 A2 EP 0106067A2 EP 83108162 A EP83108162 A EP 83108162A EP 83108162 A EP83108162 A EP 83108162A EP 0106067 A2 EP0106067 A2 EP 0106067A2
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EP
European Patent Office
Prior art keywords
threads
lever
separating head
shaft
levers
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.)
Withdrawn
Application number
EP83108162A
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German (de)
English (en)
Other versions
EP0106067A3 (fr
Inventor
Brehm Gustav
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Retech AG
Original Assignee
Retech AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Retech AG filed Critical Retech AG
Publication of EP0106067A2 publication Critical patent/EP0106067A2/fr
Publication of EP0106067A3 publication Critical patent/EP0106067A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/028—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by twisting or false-twisting at least two filaments, yarns or threads, fixing the twist and separating the filaments, yarns or threads

Definitions

  • the present invention relates to a device for producing torsion-crimped threads, with a device for heating and a device for subsequent cooling of the threads, which form a swirl column, and with a head in which the crimped threads are separated from one another, the separating head being a device for controlling the separation process.
  • a device of this type is already known.
  • the point of separation of the threads of the crimped yarn seen horizontally, lies between two fixed thread guides, above the thread guides.
  • One thread is deflected under one fixed thread guide to one side and the other thread is deflected under the other fixed guide to the other side.
  • the threads deflected in this way reach guide rollers which are attached to the ends of the levers of a parallelogram.
  • These levers lie in a plane that is practically parallel to the plane in which the swirl column lies.
  • the other ends of the levers mentioned are hinged to the frame of the machine.
  • the threads pass from the guide rollers to a drive-less compensation roller.
  • This roller is arranged transversely to the thread running direction and has conical end sections. These sections of the compensating roller are arranged symmetrically on both sides of the separation point of the swirl column. The diameter of these conical sections increases in opposite directions to one another.
  • the threads loop around the respective roller section at a circumferential angle of slightly more than 180 degrees, and then they arrive at deflection rollers which are supported at the ends of a shaft.
  • This shaft is linked to the levers of the parallelogram. As a result, this shaft ensures a certain distance between the ends of the parallelogram levers provided with the guide rollers in each position of the levers.
  • the threads go from the deflection rollers to take-off rollers and then finally to take-up rollers for the threads.
  • the tensile force in the individual threads deflected laterally on the thread guides is transferred in opposite directions to the ends of the levers by the guide rollers.
  • the guide rollers are in a symmetrical position on both sides of the fixed thread guides. Accordingly, the two thread speeds are the same. If the tensile force increases in one of the two threads, the levers swing out in the direction of the thread with less tensile force. As a result, the thread with the greater tensile force arrives in a region of the conical section of the compensating roller which has a smaller diameter, while the opposite applies to the other thread. If the speed of the compensating roller remains unchanged, the two thread speeds change in opposite directions until the levers are equal again.
  • the object of the present invention is to provide a device for producing torsion-crimped threads which does not have the disadvantages mentioned and which also has further advantages.
  • the device for torsion crimping of threads has a known device for heating the threads to be crimped and a device for cooling the threads, the latter device also being known as a device for fixing the crimp shape. Because these devices are generally known in the devices of the type mentioned, it is not necessary to present them and to explain them in more detail here.
  • the device for fixing the crimp shape is followed by a separating head 1 (FIG. 1) which sits on a shaft 2.
  • a separating head 1 In the separating head 1, the twisted column forming and crimped threads are separated from each other.
  • Said shaft 2 is hollow and is rotatably supported by means of a bearing located in a housing 3.
  • the bearing housing 3 is fastened to the frame 44 of the entire device by means of screws 4.
  • the lower end of the hollow shaft 2 is provided with a bevel gear 5 which meshes with a second bevel gear 6.
  • This second bevel gear 6 is attached to the shaft of an electric motor 7, in which the number of revolutions of its rotor can be determined in advance with the aid of a device 8 which is known per se and therefore only indicated.
  • the motor 7 is removably attached to the frame 44 of the device by means of a clamp 9.
  • the separating head 1 has a frame 10 on which all other components are attached. In the upper area of the separating head 1 shown in FIG. 1 there is a Means for feeding the crimped threads 16, 17 forming the swirl column 11 into the separating head 1.
  • This bushing 12 is lined with a ceramic material 13 which is subject to only slight wear through the yarn 11 passing through. Above and below, this bushing has 12 collar eyelets 14, which allow the yarn 11 to run at an angle or away.
  • the bushing 12 is mounted in a longitudinally displaceable manner in the frame 10, so that the distance between the outlet mouth of the bushing 12 and the other components of the separating head 1 is adjustable. With the help of a screw 15 (Fig. 2), the socket 12 can be locked in any of the set positions. However, the position of the bushing 12 can also be adjusted in that its outer surface is provided with a thread, so that the bushing 12 can be screwed into the frame 10.
  • the location of the end of the yarn column 11, i.e. that point where the threads forming the yarn column separate from one another depends on several circumstances during the operation of the device. Some of these circumstances are difficult to control. The result of this is that the position of the said separation point changes more or less during the operation of the device. It can happen that the separation point even begins to oscillate, and then the threads separate completely uncontrolled. This affects the operation of the facility. However, it has been shown that the separation process of the threads can be mastered by suitably adjusting the distance between the bushing 12 and the other components of the separation head.
  • the bushing 12 is followed by a device for regulating the separation of the threads 16 and 17 forming the yarn column 11.
  • This device initially includes a parallelogram, the double-armed lever 20 and 21 contains. These levers 20 and 21 lie in a plane which runs perpendicular to the swirl column 11, the levers 20 and 21 also being movable in this plane.
  • the middle part of these levers 20 and 21 is mounted on a support 22 which hangs from the upper horizontal section of the frame 10.
  • the carrier 22 contains a support rod 23, the upper end of which is inserted in the upper part of the frame 10. At the lower end of the support rod 23, a cross member 24 is fastened, on which the middle part of the respective lever 20 and 21 is mounted.
  • the respective lever 20 or 21 has an annular holder 25 in which a bearing 26 is located.
  • This bearing 26 sits on a pin 27 which is embedded in the cross member 24.
  • the pins 27 are located outside the axis of the hollow shaft 2, on the center of gravity of the parallelogram.
  • Two rods 28 and 29, which represent the arms of the double-armed levers 20 and 21, are inserted into the annular holder 25 opposite one another. These levers are advantageously levers of the same arm.
  • the arms 28 of the levers 20 and 21 located under the bushing 12 are made of a ceramic material. As a result, after the yarn 11 has left the bushing 12, the threads 16 and 17 can slide directly on the surface of the rods 28 without causing any significant wear on these rods 28.
  • the end parts of the second arms 29 of the levers 20 and 21 are connected to one another with the aid of a coupling member 30.
  • the coupling member 30 is designed as a plate which is articulated on the lever arms 29. This plate 30 causes the levers 20 and 21 to always be parallel to each other in each of their pivot positions.
  • a magnet 31, which consists of two parts, is assigned to said plate 30. The two parts of the magnet 31 are on the frame 10 attached to the separating head 1, one part of the magnet 31 being located above the plate 30 and the other part of the magnet 31 being located below the plate 30.
  • the plate 30 is made of a metal, so that eddy currents are induced in this plate when the plate 30 moves between the parts of the magnet 31.
  • the coupling member 30 is thus also effective as a brake plate when the levers 20 and 21 are adjusted by the forces acting in the threads 16 and 17.
  • This brake or damping device prevents the levers 20 and 21 of the control device from oscillating during the operation of the separating head 1.
  • the first arms 28 of the levers 20 and 21 are followed by a drive-less compensating roller 32. It has a shaft 33 which is arranged perpendicular to the direction of the swirl column 11 and is fastened in the frame 10 of the separating head 1 with the aid of a screw 18. Cone-shaped rollers 34 and 35 are mounted on the end parts of the shaft 33. On a metal core 36 there is a covering 37 made of a material that has a high coefficient of friction. This covering 37 can be made, for example, of rubber, ceramic or of hard material cores embedded in chemical nickel with a diameter of 2 to 10 micrometers. The surface of the covering 37 is shaped in such a way that the covering 37 has the aforementioned conical shape, the diameter of the covering 37 and thus also of the entire rollers 34 and 35 increasing outwards.
  • the compensating roller 32 is followed by a device for executing the threads 16 and 17 from the separating head 1.
  • This device contains the hollow shaft 2 already mentioned, on which the separating head 1 is clamped by means of a screw 38. Inside, this shaft 2 is lined with a ceramic material 39 which merges into collar eyes 40 at the beginning and at the end of the shaft 2.
  • This hollow shaft 2 and the bushing 12 are arranged coaxially, and they are arranged in the frame 10 of the separating head 1 so that their axes lie in the axis of rotation D of the separating head 1.
  • the delivery mechanism and the take-up spools for the crimped threads which are connected downstream of the separating head 1 and which are generally known in such devices, are not shown.
  • the frame 10 of the separating head 1 is designed as a self-contained, solid frame, and the remaining components of the separating head are attached to this frame 10 and designed so that the separating head is balanced with respect to its axis of rotation D.
  • the already described design of the control device also contributes to this, for example.
  • the threads 16 and 17 are passed through the devices for heating and cooling the threads and through the bushing 12. Then the one thread 16 is guided over the first arm 28 of one of the levers 20 and 21. The other thread 17 is guided over the first arm 28 of the other of the levers mentioned. The separation point of the threads 16 and 17 is thus between the outlet opening of the bushing 12 and the two levers 20 and 21. Then each of the threads 16 and 17 is wrapped around one of the conical rollers 34 and 35, respectively, and the two threads are passed through hollow shaft 2 and passed through the delivery plant. However, they are not yet connected to the recording coils. Now the threads 16 and 17 can begin to be conveyed through the device, after which the threads reach full operating speed.
  • the density of rotation of the column 11 consisting of the threads 16 and 17 is either zero or very low.
  • the desired rotation density of the column 11 is set and the motor 7 can be started. After that, the motor 7 drives the hollow shaft 2 and consequently also the separating head 1. After the separating head 1 has carried out the number of revolutions corresponding to the desired rotational density of the swirl column 11, the motor 7 is switched off and the separating head 1 now stands still. However, the threads 16 and 17 continue to run through the separating head 1 at undiminished speed. The threads are already curled.
  • the threads 16 and 17 then continue over the first arm 28 of the respective lever 20 or 21 to one of the rollers 34 or 35 of the compensating roller 32. Then the two threads 16 and 17 leave the separating head 1 through the hollow shaft 2.
  • the threads 16 and 17 slide on only a short section of the surface of the rod-shaped first arms 28 of the control levers 20 and 21.
  • the threads mentioned only loop around the rollers 34 and 35 of the compensating roller 32.
  • the tensile forces effective in the threads mentioned are thus available practically undiminished when controlling the compensation of the tensile forces in the threads, and without any delay or the like.
  • the consequence of this is that the control process is very sensitive and that such a device is very effective works reliably.
  • There is no vibration of the levers 20 and 21 because such vibrations are damped by the plate 30 and the magnet 31. This results in assured quality of the crimped threads over time and also over positions on a machine. This is the prerequisite for achieving higher production speeds for crimped threads.
  • This separating head 1 contains a base plate 50 which is provided at the top with an obliquely slotted eyelet 51 for feeding the yarn column 11 into the separating head. Pins 52 are inserted into the base plate 50 under this eyelet 51. On each side of the eyelet 51 there is a row of such pins 52, which are advantageously made of a ceramic material.
  • the lateral parts of the base plate 50 are equipped with auxiliary rollers 53 hen whose purpose will be discussed later.
  • this bearing block 54 for the compensating roller 32 already discussed.
  • this bearing block 54 is provided with a groove 55 in which a lever 56 is mounted so as to be longitudinally displaceable.
  • This lever 56 lies in a plane which runs perpendicular to the swirl column 11 and its longitudinal axis runs practically parallel to the axis of the compensating roller 32.
  • the lever 56 is displaceable in the axial direction of the compensating roller 32.
  • the lever 56 is advantageously located directly above the shaft 33 of the compensating roller 32. However, it can also lie in front of or behind the roller shaft 33, as a result of which, for example, the wrap angle of the roller 32 can be changed by the threads 16 and 17.
  • a plate 57 is fastened on the bearing block 54 by means of screws 58, so that this plate 57 holds the lever 56 in the groove 55.
  • the end parts of the lever 56 are provided with collar eyes 59 through which the crimped threads 16 and 17 can pass.
  • the middle part of the lever 55 is surrounded by a layer 60 of damping oil, for example of silicone oil.
  • damping oil for example of silicone oil.
  • the bearing block 54 is provided with a rod 61 which runs practically parallel to the axis of the compensating roller 32.
  • this rod 61 of the U may mschlingungs- angle of the compensating roll can be reduced 32nd
  • the size of the wrap angle mentioned can be adjusted by moving the rod 61 on or in the bearing block 54 ranks high as required.
  • the lower part of the base plate 50 is attached to the shaft 2, which, like the separating head according to FIG. 1, is attached to the frame 44 of the device with the aid of the bearing housing 3 and the screws 4. Although this is not shown in FIGS. 3 and 4, the shaft 2 can also be driven with the aid of the motor 7 in this case.
  • the front part of the bearing housing 3 is provided with a mandrel 62 in this embodiment of the separating head 1.
  • the housing of the motor 7 is provided with a corresponding bore (not shown) which extends in the axial direction of the motor 7 and into which the mandrel 62 can come to rest. In such a case, the motor 7 need not be attached to the frame 44 of the device by means of the clamp 9.
  • the motor 7 can only be inserted onto the mandrel 62 from the front until the bevel gear 6 engages with the bevel gear 5 on the shaft 2. After the required twist density has been reached in the twist column 11, the motor 7 can simply be pulled away from the mandrel 62, and it can simply be plugged in again on the mandrel of the adjacent separating head in order to also achieve the required twist density in the yarn column associated with this separating head .
  • the mandrel 62 thus serves as a device for temporarily attaching the motor 7 to the cutting head 1.
  • the Garnklale 11 passes through the obliquely slotted eyelet 51 therethrough and ese behind this O 51 it is in the individual threads 16 and 17 are split again.
  • one of the pairs of pins 52 can be selected to separate the threads 16 and 17.
  • the pair of ceramic pins 52 lying at the bottom has been used for the purpose mentioned.
  • the threads 16 and 17 run from the pins 52 to the lever 56 pass through the eyelets 59 in the end portions of this lever 56 and reach the compensating roller 32, which loop around the threads 16 and 17.
  • the threads 16 and 17 then emerge through the shaft 2 from the separating head 1.
  • the wrap angle of the threads 16 and 17 on the compensating roller 32 is even more than 360 degrees.
  • the mutual effect between the thread and the respective conical roller 34 or 35 of the compensating roller 32 is therefore quite intense. This creates favorable conditions for a very sensitive control of the separation process of the threads 16 and 17.
  • the wrap angle can be reduced using the rod 61. This is done by leading the threads 16 and 17 from the compensating roller 32 not directly to the shaft 2 but first to the rod 61, as is indicated by the thread section 161 in FIG. 4.
  • the rod 61 is located at the bottom in the bearing block 54, so that the wrap angle is only slightly reduced by the measure just mentioned.
  • the higher the rod 61 is arranged with respect to the axis of the compensating roller 32 the more the wrap angle decreases.
  • the conical rollers 34 and 35 shown have a diameter that increases towards the outside. However, it is also readily possible to design these rollers 34 and 35 so that their diameter decreases towards the outside.
  • This embodiment of the rolls mentioned can be particularly advantageous, for example, when the rolls are wound around with the threads at the start of the crimping process. In such a case, the threads 16 and 17 can be guided under the upper pair of pins 52 to the rollers 53 already mentioned on the edge parts of the base plate 50.
  • the threads 16 and 17 run from here, as is dash-dotted in FIG tiert is shown, to the eyelets 59 in the lever 56.
  • the length of the lever 56 is less than the distance between the two auxiliary rollers 53rd
  • FIGS. 5 and 6 show a still further embodiment of the separating head 1, which is similar to the separating head which is shown in FIGS. 3 and 4. For this reason, those reference numbers which also apply to the separating head according to FIGS. 5 and 6 have been taken over from FIGS. 3 and 4.
  • This third embodiment of the separating head 1 differs from the previous embodiment primarily in the mounting and the design of the lever.
  • a pendulum 70 which has a bearing eye 71, is mounted on a shaft 72 which is embedded in the base plate 50.
  • a two-armed lever 74 is attached.
  • the pendulum 70 together with the lever 74 are shown in perspective in FIG. 7.
  • the lever 74 is a two-armed lever, the middle part of which is attached to the end of the pendulum 70.
  • the end sections of the two-armed lever 74 are provided with angled parts 75. These sections 75 are so long that they extend from the pendulum 70 to the compensating roller 32 located on the front side of the base plate 50.
  • eyelets 59 are embedded, through which the threads can pass, as is described in connection with FIGS. 3 and 4.
  • a strip-shaped spring 76 which is fastened to the rear side of the base plate 50 with the aid of a screw 77, serves as the damping device.
  • This spring 76 is bent such that the arm 73 of the pendulum 70 slides on it.
  • the pendulum 70 and thus also the lever 74 are braked by this spring 76, and this prevents the lever 74 from operating the device swings.
  • the threads 16 and 17 are performed in this embodiment of the separating head practically the same as in the separating head according to FIGS. 3 and 4.
  • the pendulum 70 swings out together with the lever 74, and then the control process already described here takes place in order to restore the balance of forces on the threads.
  • This embodiment of the separating head can also have conical rollers 34 and 35, the diameter of which decreases towards the outside.
  • this separating head 1 is also provided with the auxiliary rollers 53.
  • the length of the lever 74 is smaller than the distance of the auxiliary rollers 53 from one another.
  • the pendulum can also be designed differently. It can be made of a flexible material, such as made of carbon composite fibers. One end of such a pendulum is clamped in the base plate 50 (not shown) and the other end thereof is provided with the lever 74.
  • the swirl column can be assembled gently and faster than before. It should also be pointed out here that the possibility of using a single motor 7, which can be used in succession to drive a plurality of cutting heads 1, has already been described. The crimping process can be started more safely than before. As can be seen from the above description, the swirl column structure is very simple from the point of view of the person operating the machine.
  • a particular advantage of this device relates to the possibility of changing the density of rotation even during operation of the device. As has already been indicated, this takes place by a suitable control of the motor 7 by the device 8.
  • the cutting heads described are very simple in comparison to the already known cutting heads, they are space-saving, low in mass and yet can be subjected to high dynamic loads.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Wire Processing (AREA)
EP83108162A 1982-09-29 1983-08-18 Appareil pour la fabrication de fils frisés par torsion Withdrawn EP0106067A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5727/82 1982-09-29
CH572782 1982-09-29

Publications (2)

Publication Number Publication Date
EP0106067A2 true EP0106067A2 (fr) 1984-04-25
EP0106067A3 EP0106067A3 (fr) 1985-10-16

Family

ID=4298346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108162A Withdrawn EP0106067A3 (fr) 1982-09-29 1983-08-18 Appareil pour la fabrication de fils frisés par torsion

Country Status (3)

Country Link
US (1) US4553382A (fr)
EP (1) EP0106067A3 (fr)
JP (1) JPS5982130A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19546372C1 (de) * 1995-12-12 1997-04-03 Saurer Allma Gmbh Verfahren und Vorrichtung zur Herstellung von gedrehtem, texturierten Garn
WO2005087987A3 (fr) * 2004-03-09 2005-12-01 Trevira Gmbh Monofilament texture a torsion simulee

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB784004A (en) * 1955-03-04 1957-10-02 Fine Spinners & Doublers Ltd Improvements in the crimping of textile yarns or threads
CH392767A (de) * 1963-02-01 1965-02-15 Heberlein & Co Ag Verfahren zur permanenten Kräuselung von Textilgarnen
CH418515A (de) * 1963-07-25 1966-08-15 Heberlein & Co Ag Vorrichtung zur Garnführung bei der permanenten Kräuselung von Textilgarnen
CH425076A (de) * 1963-07-25 1967-05-31 Heberlein & Co Ag Verfahren zur permanenten Kräuselung von Textilgarnen
US3192697A (en) * 1963-08-26 1965-07-06 Turbo Machine Co Apparatus and method for false twisting yarns
US3327462A (en) * 1965-06-17 1967-06-27 Turbo Machine Co Yarn separating means
DE1660210A1 (de) * 1965-07-28 1970-07-16 Zinser Textilmaschinen Gmbh Vorrichtung zur Fadentrennung fuer Falschdraht-Kraeuselmaschinen
GB1207811A (en) * 1967-09-04 1970-10-07 Ici Ltd Improvements relating to the manufacture of twist crimped filament yarn
US3613403A (en) * 1969-08-22 1971-10-19 Robert Peel Yarn texturing and knitting apparatus
US3747317A (en) * 1972-02-23 1973-07-24 Du Pont Guide device for separating yarn ends

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19546372C1 (de) * 1995-12-12 1997-04-03 Saurer Allma Gmbh Verfahren und Vorrichtung zur Herstellung von gedrehtem, texturierten Garn
FR2742169A1 (fr) * 1995-12-12 1997-06-13 Saurer Allma Gmbh Procede et dispositif de fabrication de fil tors texture
WO2005087987A3 (fr) * 2004-03-09 2005-12-01 Trevira Gmbh Monofilament texture a torsion simulee

Also Published As

Publication number Publication date
EP0106067A3 (fr) 1985-10-16
JPS5982130A (ja) 1984-05-12
US4553382A (en) 1985-11-19

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