EP2358932B1 - Apparatus for texturing and winding up a plurality of yarns - Google Patents

Description

The invention relates to a device for texturing and winding a plurality of threads according to the preamble of claim 1.

A generic device is from the DE 199 20 177 A1 known.

In the production of synthetic threads, it is customary to texture the threads formed from a plurality of filament strands in order to produce as much as possible a textile character and properties on the threads. Texturing is understood here as the crimping of the filament strands in order to obtain a crimped and bulged thread. Such Einkräuselungen are preferably produced by a so-called false twist treatment, wherein in the filament bundle, a twist is generated, which is fixed by a thermal treatment of the thread. The known device has for this purpose a swirl device, which are preceded by a cooling device and a heater in the yarn path. The heating device, the cooling device and the swirling device are arranged between feed rollers which lead a plurality of parallel running threads. After texturing, the threads are co-wound within a take-up device into coils which are held on a winding spindle.

The known device is particularly suitable for receiving and texturing a plurality of threads from a melt spinning device. In that regard, the supply rollers, the heater, the cooling device and the swirl device are aligned in a vertical arrangement. However, such devices are also preferably used to strip threads from feed bobbins held on a creel. So it is well known that especially the production speeds of melt spinning and texturing depending on the desired thread type can be very different, so that the Melt spinning process and the texturing process are operated independently of each other for economic reasons.

From the FR-A1-2 264 901 a device for producing crimped threads or bundles of threads made of thermoplastic material is known. This device comprises a spinning device. Drawing device. Texturing device and a winding device, which are arranged in direct succession in the direction of the threads, wherein the running direction of the threads is oriented orthogonal to a winding spindle.

The US-A-3,492,389 discloses a device for producing synthetic threads with a plurality of feed rollers, a heating zone and Flaschdrallspindeln, wherein the yarn path of the threads is not parallel to a winding spindle.

It is an object of the invention to develop the device of the generic type for texturing and winding a plurality of threads such that the means for texturing and winding are arranged as compact as possible and variable.

Another object of the invention is to provide a device for texturing and winding a plurality of threads, in which a group of threads can be textured and wound up in the smallest possible machine pitch regardless of the number of threads.

This object is achieved in that at least the cooling device, the twisting device and one of the feed rollers are arranged the same direction to a straight yarn path to the winding spindle.

Advantageous developments of the invention are defined by the features and feature combinations of the subclaims.

The invention has the particular advantage that the thread guide is adapted in the texturing zone of the overhanging winding spindle of the take-up device. Thus, the length of the take-up can be used advantageously to obtain a parallel aligned texturing zone.

A particularly user-friendly arrangement is given by the development of the invention, in which the cooling device, the twisting device and the delivery roller are arranged in a horizontally oriented treatment plane parallel to the winding spindle, which extends above the winding device. In this case, both the facilities above the take-up, as well as the bobbin change of the horizontally oriented winding spindle advantageously operate by an operator.

So that the distance between the devices above the take-up device and the take-up device can be kept as small as possible, the development of the invention is preferably used, in which the delivery roller is arranged at a front end of the take-up device and in which each of the winding points is associated with a guide roller, the are arranged downstream of the thread guide of the delivery roller. Thus, the threads of the yarn sheet can be distributed after expiration of the feed roller from a substantially horizontally oriented distribution plane out to the individual winding points of the take-up.

In a further particularly advantageous embodiment of the invention, a further delivery roller and the heater are arranged in a straight yarn path parallel to the winding spindle. Thus, preferably, a texturing zone can be formed, which is traversed by the yarn sheet in the straight yarn path. For this purpose, the delivery mechanism and the heating device are arranged in the treatment level of the cooling device. There are no additional thread deflections and thread guides required within the texturing zone, so that the swirl generated at the threads can unhindered back to fix in the cooling device and the heater. The texturing on the threads can be carried out very gently.

In the production of textured threads, depending on the thread material, it is necessary to carry out a heat post-treatment on the crimped thread. For this purpose, the development of the invention is provided, in which a second heating device is arranged between two feed rollers in a post-treatment plane parallel to the winding spindle. This makes it possible to realize a zig-zag-like guidance of the yarn sheet above the take-up device.

The two feed rollers are therefore preferably arranged above the take-up device at the opposite front ends of the take-up device.

For the production of high-quality textured threads, the development of the invention is particularly advantageous, in which a creel is provided on which a supply bobbin is held to each of the threads, wherein the threads are withdrawn together by one of the feed rollers of the supply spool. Thus, the process speed and the winding speed can be selected such that high Einkräuselungen be performed on the threads.

Alternatively, however, it is also possible to directly remove the threads from a melt spinning device, wherein a filament bundle is extruded to each of the threads in the melt spinning device. The filaments are then withdrawn after spinning and spin stretching from one of the feed rolls and fed into the texturing zones.

To automate the process, the development of the invention is particularly suitable, in which the winding device has a second winding spindle, which is held by 180 ° offset from the first winding spindle on a turntable and is held by the turntable alternately between a winding area and a change area. This makes it possible to realize automatic bobbin changing during the winding of the threads, so that a continuous production process can be carried out.

The take-up device has in this case for each winding point in each case a traversing yarn guide, which is reciprocated by a single drive or acting on all traversing yarn group drive for laying the respective threads and forth. In this case, single-motor-driven traversing yarn guides are preferably used, which offer a high degree of flexibility for the implementation of winding parameters.

The invention will now be explained in more detail with reference to some Ausführungsbeispiete the device according to the invention with reference to the accompanying drawings.

Fig. 1

schematisch eine Ansicht eines ersten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung

Fig. 2

schematisch eine Ansicht eines weiteren Ausführungsbeispiels der erfindungsgemäßen Vorrichtung

Show it

Fig. 1

schematically a view of a first embodiment of the device according to the invention

Fig. 2

schematically a view of another embodiment of the device according to the invention

In Fig. 1 a first embodiment of the device according to the invention is shown in a side view. The embodiment has a take-up device 1 and a gate frame 2, which are arranged side by side. On the gate frame 2 a plurality of stacked superposed Spulendorne 7 are arranged. In this case, two spool pins 7 are provided per floor, in order to be able to receive in each case one supply spool 3 and one reserve spool 5. The gate frame 2 is preferably rotatable so that the spool pins 7 can be alternately guided in a withdrawal position or a change position. In the Abspulpositionen 7 Spulendornen several head thread guides 31 are assigned to each deduct a thread 4 of the held on the bobbin mandrel 7 feed bobbin 3 can.

The winding device 1 is arranged next to the gate frame 2 and has a cantilevered winding spindle 17.1, which is aligned with its free end to a Doffgang 32 out. Doffgang 32 is thus formed on the opposite side to the gate frame 1, so that a plurality of winding devices 1 could be arranged along a machine longitudinal side.

The winding spindle 17.1 is mounted projecting on a turntable 19 and coupled to a drive, not shown here. The turntable 19 is rotatably mounted within a machine frame 20 and coupled to a rotary drive. On the turntable 19 is offset by an angle of 180 ° to the winding spindle 17.1 a second winding spindle 17.2 arranged. The winding spindle 17.2 is journalled rotatably mounted on the turntable 19 and coupled to a second drive, not shown here. The winding spindles 17.1 and 17.2 can be guided by rotation of the turntable 19 alternately in a winding area or a change area. At the in Fig. 1 illustrated situation, the winding spindle 17.1 is held in a winding area.

In the winding device 1, a total of four winding points 13.1 to 13.4 are formed in order to simultaneously wind four threads 4 to form coils 18. The coils 18 are in this case wound together on the winding spindle 17.1. The winding spindle 17.1 is associated with a pressure roller 16 which bears against the surface of the coils 18.

In order to be able to wind the threads 4 in the winding stations 13.1 to 13.4 in each case into a cross-wound bobbin, a traversing device 14 is provided which has a traversing yarn guide 15.1 to 15.4 for each of the winding positions. The traversing yarn guides 15.1 to 15.4 are each reciprocated via a drive means within a traverse stroke. The drive means, which are preferably formed by belts, are preferably driven by a single motor. However, it is also possible to control the traversing yarn guides 15.1 to 15.4 by means of a group drive.

Above the winding device 1, a texturing zone for texturing the threads 4 is formed. For this purpose, at a front end of the winding device 1, a first delivery roller 8.1 and arranged at the opposite end face of the winding device 1, a second delivery roller 8.2. Between the delivery rollers 8.1 and 8.2 are a twisting device 11, a cooling device 10 and a heating device 9 in the same direction straight thread arranged to the winding spindle 17.1. The heating device 9, the cooling device 10 and the swirl device 11 form a treatment plane in which the texturing zone for texturing the threads 4 extends. The treatment level is aligned horizontally in this case, so that there is a substantially parallel to the winding spindle 17.1 directed yarn path in the texturing.

The arranged at the right front end of the take-up device 1 feed roller 8.2 are arranged downstream of a plurality of pulleys 12, wherein the pulleys 12 are assigned to the winding stations 13.1 to 13.4 in the winding device 1. Thus, a distribution of the threads 4 running from the delivery roller 8.2 can be carried out from a substantially horizontally oriented distribution plane. The threads 4 are performed after the delivery roller 8.2 to the pulleys 12.1 to 12.4 and distributed successively to the individual winding points 13.1 to 13.4.

The delivery roller 8.1 arranged at the left-hand end of the take-up device 1 is associated with an attachment roller 21 in order to be able to guide the threads 4 with multiple wrapping. The delivery roller 8.1 are assigned a plurality of guide rollers 33 in order to be able to deduct the threads 4 from the supply bobbins 3.

The delivery rollers 8.1 and 8.2 are each coupled to a drive, wherein at the delivery rollers 8.1 and 8.2 different high peripheral speeds are set. Thus, the delivery roller 8.2 is operated at a higher peripheral speed in order to set a stretch in relation to the delivery roller 8.1 on the threads 4.

At the in Fig. 1 illustrated embodiment of the device according to the invention a total of four threads 4 are deducted by the first feed roller 8.1 of feed bobbins 3 and guided into a texturing zone. Within the texturing zone, which extends in the axial direction of the winding spindles 17.1 and 17.2, a false twist is generated by the twisting device 11 at each of the multifilament yarns 4, which lags in the texturing zone and the cooling device 10 and the heater 9 passes. Within the heating device 9, the thread is heated above the gas transformation temperature of the respective thread material and then cooled in the cooling device 10, so that the crimps formed in the filaments are fixed.

The twisting, the cooling and the heating of the threads can be produced with the furnishings known for this purpose. Thus, combination units are possible in which a plurality of process steps such as the twist distribution and the cooling is carried out by a common device.

The crimped threads 4 are withdrawn from the texturing zone by means of the second delivery roller 8.2 and guided via the deflection rollers 12 to the respective winding points 13.1 to 13.4 of the take-up device 1. Within the winding device 1 a thread 4 is wound into a coil 18 in each of the winding point 13.1 to 13.4. The coils 18 are held at a distance from each other of the winding spindle 17.1 and are driven at a constant peripheral speed.

In the event that the coils 18 on the winding spindle 17.1 have reached a final diameter, an automatic change takes place by activation of the turntable 19, so that the empty winding spindle 17.2 is guided in the winding region. The threads 4 are taken over automatically by the winding spindle 17.2 of the spools 18, which for this purpose preferably has winding sleeves with catching means, so that new spools can be wound around the circumference of the winding spindle 17.2. The full bobbins on the winding spindle 17.1 can be removed from the winding spindle 17.1 and transported away via the doffing passage 32.

In Fig. 2 is shown a further embodiment of the device according to the invention.

At the in Fig. 2 represented version of the device according to the invention, the device is combined for texturing and winding with a melt spinning device. A melt spinning device 23 has for this purpose a spinning beam 24, which carries a plurality of spinnerets 26 on its underside. The spinnerets 26 are connected via melt lines and spinning pumps not shown here within the spinneret 24 with a melt inlet 25. The melt inlet 25 at the top of the spinneret 24 is coupled to a melt source (not shown here), for example an extruder.

Below the spinneret 24, a spin cooling device 27 is arranged to cool the filament strands extruded through the spinnerets 26. The spin cooling device 27 could be formed by a so-called Querstromanblasung in which a cooling air flow generated by a parallel to the filament strands extending blowing wall. However, the spin cooling device 27 may also be formed by a so-called Rundumanblasung, in which a cooling air flow is directed radially from inside to outside or from outside to inside of the filament strands.

Below the spinning-cooling device 27, a preparation device 28 is arranged in order to combine the filament strands into a thread 4 in each case.

The preparation device 28 is followed by a driven withdrawal godet 22, through which the threads 4 are withdrawn from the melt spinning device 23. The withdrawal godet 22 is followed by a texturing zone for texturing the threads and a post-treatment zone for shrinking the threads. For this purpose, a first delivery roller 8.1 and a second delivery roller 8.2 above a take-up device 1 are arranged opposite each other at the front ends. The delivery rollers 8.1 and 8.2 limit a texturing zone, which extends substantially horizontally rectified to a winding spindle 17.1 of the winding device 1. Within the texturing zone, a heating device 9, a cooling device 10 and a twisting device 11 are arranged one behind the other in the yarn path between the delivery rollers 8.1 and 8.2.

Between the withdrawal godet 22 and the delivery roller 8.1 a Tangeleinrichtung 29 is arranged to cause each of the threads 4 an intensification of the thread closure.

To form an aftertreatment zone, a third delivery roller 8.3 is arranged below the delivery roller 8.1, which forms the aftertreatment zone with the delivery roller 8.2. In the yarn path between the delivery roller 8.3 and the delivery roller 8.2, a second heating device 30 is provided, in which the threads 4 are heated to a temperature for shrinking treatment. The delivery rollers 81, 8.2 and 8.3 are arranged in a meandering yarn path, so that the texturing zone and the aftertreatment zone extend parallel to the melt spinning device and the takeup device.

The delivery roller 8.3 are downstream of several guide rollers 12 in the yarn path to separate the running of the delivery roller 8.3 yarn sheet and supply the winding stations 13.1 to 13.4 in the winding device 1.

The winding device 1 is identical to the embodiment according to Fig. 1 , so that at this point no further explanation and reference is made to the above description.

At the in Fig. 2 In the illustrated embodiment, a total of four threads 4 are extruded from a polymer melt through the spinnerets 26 of the melt spinning device 23. Each of the threads 4 is formed from a plurality of fine filament strands, which are prepared by a spin cooling in the spin cooling device 27 by the preparation device 28 and merged into one thread become. The threads 4 are then withdrawn through the take-off godet 22 and fed to the texturing zone. The delivery roller 8.1 and the withdrawal godet 22 are driven at different peripheral speeds, so that the threads 4 receive a spinning draw. Before the threads enter the texturing zone, a swirling action is performed on each of the threads 4 by the tying device 29 in order to ensure the cohesion of the filament strands in the thread. Within the texturing zone, a false twist is generated on the threads 4 in order to obtain a fixation of the crimping of the filament strands via the heating device 9 and the cooling device 10 by thermal treatment. After crimping, the filaments in the aftertreatment zone are reheated by the second heater 30 to a temperature above the first gas transition temperature to allow for shrinkage treatment. For this purpose, a small difference in speed is set between the delivery rollers 8.2 and 8.3, in order to enable as low a tension as possible threadline within the aftertreatment zone.

Subsequently, the threads 4 are wound in the winding device 1 to coils 18.

In the in the embodiments according to Fig. 1 and 2 In each case devices are shown which allow a treatment of four threads simultaneously in parallel. However, the number of threads is exemplary here. In principle, the device according to the invention is suitable for simultaneously texturing and winding less than four or more than four threads. In addition, the formation of the texturing zone above the take-up device is also exemplary. In principle, there is the possibility that the heating device and the cooling device are held in a V-arrangement, so that the thread can be guided through a deflection roller arranged between the cooling device and the heating device. Such a formation of the texturing zone is required, for example, for the cases in which the larger treatment lines for heating and cooling of the threads are required.

LIST OF REFERENCE NUMBERS

1

takeup

2

creel frame

3

supply bobbin

4

thread

5

reserve package

7

chuck

8.1, 8.2, 8.3

delivery roller

9

heater

10

swirl device

12

idler pulley

13.1, - 13.4

winding position

14

Traversing device

15.1 - 15.4

Traversing thread guide

16

pressure roller

17.1, 17.2

winding spindle

18

Kitchen sink

19

turntable

20

machine frame

21

companion roll

22

godet

23

Melt spinning device

24

spinning beam

25

melt inlet

26

spinnerets

27

Spin cooling device

28

preparation device

29

entanglement

30

second heating device

31

Yarn guide

32

doffing aisle

33

leadership

Claims (10)

1. An apparatus for texturing and winding up a plurality of threads, having a plurality of delivery rollers (8.1, 8.2), having a heating device (9), having a cooling device (10), having a twist device (11) and having a multi-position winding-up device (1), which has at least one projecting bobbin-winding spindle (17.1), on which the threads assigned to the winding locations (13.1-13.4) are wound together to form bobbins,
   characterized in that
   at least the cooling device (10), the twist device (11) and one of the delivery rollers (8.2) are arranged so as to form a straight thread run oriented in the same direction as the bobbin-winding spindle (17.1)), wherein the delivery roller (8.2) is arranged at an end-side end of the winding-up device (1), and in that a deflecting roll (12) is assigned to each of the winding locations (13.1-13.4), said deflecting roll being arranged downstream of the thread guide of the delivery roller (8.2).
2. The apparatus as claimed in claim 1,
   characterized in that
   the cooling device (10), the twist device (11) and the delivery roller (8.2) are arranged parallel to the bobbin-winding spindle (17.1) in a horizontally oriented treatment plane which extends above the winding-up device (1).
3. The apparatus as claimed in one of claims 1 to 2,
   characterized in that
   a further delivery roller (8.1) and the heating device (9) are arranged in a straight thread run parallel to the bobbin-winding spindle (17.1).
4. The apparatus as claimed in claim 3,
   characterized in that
   the delivery unit (8.1) and the heating device (9) are arranged in the treatment plane of the cooling device (11).
5. The apparatus as claimed in one of claims 1 to 4,
   characterized in that
   there is provided a second heating device (30), which is arranged between two delivery rollers (8.2, 8.3) in an aftertreatment plane parallel to the bobbin-winding spindle (17.1).
6. The apparatus as claimed in claim 5,
   characterized in that
   the two delivery rollers (8.2, 8.3) are arranged above the winding-up device (1) at the opposite end-side ends of the winding-up device (1).
7. The apparatus as claimed in one of claims 1 to 6,
   characterized in that
   there is provided a bobbin creel (2) at which a feed bobbin (7) for each of the threads is held, and in that the threads are jointly taken off the feed bobbins (7) by one of the delivery rollers (8.1).
8. The apparatus as claimed in one of claims 1 to 6,
   characterized in that
   there is provided a melt- spinning device (23), through which a filament bundle is extruded for each of the threads, wherein the threads are taken off one of the delivery rollers (8.1) following spin cooling (27) and spin drawing (22).
9. The apparatus as claimed in one of the preceding claims,
   characterized in that
   the winding-up device (1) has a second bobbin-winding spindle (17.2), which is held on a turntable (19) in a manner offset through 180° with respect to the first bobbin-winding spindle (17.1) and which is held by the turntable (19) in a manner such that it alternates between a winding-up region and a changing region.
10. The apparatus as claimed in one of the preceding claims,
    characterized in that
    the winding-up device (1) has a traversing thread guide (15.1-15.4) for each winding location (13.1-13.4), said traversing thread guide (15.1-15.4) being guided back and forth by an individual drive or a group drive, which acts on a group of traversing thread guides, in order to lay the thread in question.

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