EP1594785B1 - Device for producing and winding synthetic threads - Google Patents

Abstract

The invention relates to a device for producing and winding synthetic threads. Said device comprises a spinning device (1) for melt spinning the threads, at least one treatment device (7) for treating the threads and a winding device (16) comprising several winding stations for winding the threads. The winding stations (17. 1, 17. 2, 17. 3) are distributed along a horizontal longitudinal axis of the winding device (16) and a driven guide roller (12) and a respective thread guide (1,5. 1, 15. 2, 15. 3) per winding station are located upstream of said stations in order to guide the threads. The aim of the invention is to prevent different thread deviations despite varying distances that separate the threads during the treatment and winding of said threads. To achieve this, the guide roller (12) for guiding the threads is aligned vertically with the roller axis and is located at the side of the thread guides (15.1, 15.2, 15.3) in such a way that the threads can be guided essentially in parallel between the guide roller (12) and the thread guides (15.1, 15.2, 15.3).

Description

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

Such devices for making and winding a plurality of synthetic filaments including a spinnerette having a plurality of spinnerets, a treatment device, and a multi-turn winding device are well known. Here, a polymer melt is distributed by means of a melt generator on several spinnerets in the spinning device. In the spinnerets, the polymer melt is extruded under pressure in each case into strand-like filament bundles, which are brought together after cooling to form a thread. The threads then pass together through a treatment device to obtain certain physical properties of the threads. After treatment, the threads are individually wound into coils. The threads are guided within the device according to the versions of the individual devices with different distances from each other. For example, it is known from EP 0 845 550 that the spacing between the threads is different in each case during spinning, during treatment and during winding. Thus, it is necessary that the threads are spread after treatment for winding to a greater thread pitch, so that the flow conditions of the threads are different from one of the take-up immediately upstream guide roller from thread to thread. In particular, in the cases in which the threads in the treatment device receive a crimp, spreading and the associated coefficients of friction due to yarn guides and the different discharge conditions can have a negative effect directly on the quality data of the crimped yarns.

In order to distribute the threads as possible under the same deflection conditions on the individual winding points of the winding device after treatment, only devices are known in the prior art, in which the upstream in the winding device guide roller in its length is dimensioned such that the threads substantially after the Treatment can be performed in parallel to the winding device. However, devices of this kind, for example those known from WO96 / 09425, have the disadvantage that the aggregates for the treatment and guidance of the threads must be designed for a thread spacing predefined by the winding locations. This long-projecting and very wide treatment units are required, which in particular have a poor operability result.

Accordingly, it is an object of the invention to provide an apparatus for producing and winding synthetic yarns of the generic type in which the yarns can be performed substantially under the same conditions of a caused by a treatment device small thread spacing to a conditional by a take-up device greater thread pitch.

This object is achieved in that the guide roller for guiding the threads with the roll axis aligned vertically and laterally adjacent to the yarn guides is arranged so that the threads between the guide roller and the yarn guides are substantially parallel feasible. As a result, the threads are fed through the guide roller parallel to the longitudinal axis of the take-up device up to the thread guides assigned to the winding stations. At the thread guides, each of the threads is deflected by about 90 ° to run into the winding stations. Each of the threads is thus guided between the guide roller and the winding point under identical conditions. The thread spacing of the threads on the guide roller, which is advantageously oriented to the upstream treatment device, can thus be independent of the distance of the winding points to each other. Even big ones Differences in the thread spacings between the treatment device and the winding device can be advantageously bridged by equal Umschlingungsverhältnisse on each thread.

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

In order to distribute the threads with the least possible friction from the guide roller to the winding points, the thread guides are formed by freely rotatable pulleys according to an advantageous embodiment of the invention. Here, the pulleys for realizing a parallel yarn path between the yarn guides and the guide roller can be arranged in each case at the same height with the running of the guide roller threads. However, it is also possible that the pulleys are arranged at a common height.

For setting certain thread tension states on the threads, the development of the invention is particularly suitable, in which the deflection rollers are designed to be driven individually or in groups. Thus, in particular, it is possible to operate a thread tension reduction that is more favorable for winding the threads.

The guide roller is preferably associated with a co-aligned Beilaufwalze, so that the threads can be guided in multiple wraps on the guide roller. In particular, high withdrawal forces can be applied for pulling off the threads. Thus, for example, the threads could be withdrawn directly from the spinning device and fed to the take-up device. On the other hand, the higher yarn tensions lead to a safe and smooth running of the yarn sheet on the circumference of the guide roller.

The advantageous development of the invention, in which the yarn guide directly upstream of the winding stations are such that in the yarn path each of the yarn guide follows a traversing unit of the winding point, characterized by a compact and short design. In this case, advantageously, the drive and control technology of the guide roller can be combined with the drive and control technology of the winding machine to form a unit.

In order to maintain the vertical orientation of the device for producing and winding synthetic threads, according to a particularly preferred embodiment of the invention in the yarn path in front of the guide roller a deflecting device for changing the yarn path of the threads is preferably arranged at an angle of 90 °. This makes it possible, regardless of the upstream spinning facilities and treatment facilities to make a distribution taking into account identical Umschlingungsverhältnisse.

The deflection device can be formed by thread guide elements or advantageously by one or more obliquely arranged between the yarn feed direction and yarn flow direction guide rollers. This can be implemented in particular a low-friction direction change of the yarn sheet.

The guide roller upstream treatment device can be formed by any treatment on the threads performing treatment unit. Thus, for example, the treatment device could be formed by a Tangelvorrichtung that generates a swirling to improve the thread closure at each of the threads.

In many cases, however, it is necessary that the synthetic threads produced have a certain orientation. For this purpose, the treatment device is designed as a drafting system, which stretches the freshly spun threads prior to winding.

Alternatively or for further treatment, the treatment device can be arranged downstream of a crimping device and a crimping device Training deduction work. Such treatment devices are particularly suitable for making synthetic crimp yarns.

To increase the integration of the individual units within the device, the guide roller can also be formed directly as the last galette of the drafting system or as the last godet of the deduction work.

There is the possibility that, for example, the godets or galette unit of the drafting system or the godets or godet units of the deduction mechanism are aligned substantially vertically with their longitudinal axes.

Further advantages of the invention are explained in more detail below with reference to some embodiments according to the accompanying figures.

Fig. 1

schematisch eine Seitenansicht eines ersten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung

Fig. 2

schematisch eine Draufsicht der Aufwickeleinrichtung des Ausführungsbeispiels aus Fig. 1

Fig.3

schematisch ein erstes Ausführungsbeispiel einer Behandlungseinrichtung

Fig. 4

schematisch ein weiteres Ausführungsbeispiel einer Behandlungseinrichtung

Fig. 5

schematisch eine Seitenansicht eines weiteren Ausführungsbeispiels der erfindungsgemäßen Vorrichtung

They show:

Fig. 1

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

Fig. 2

schematically a plan view of the winding device of the embodiment of FIG. 1

Figure 3

schematically a first embodiment of a treatment device

Fig. 4

schematically another embodiment of a treatment device

Fig. 5

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

In Figs. 1 and 2, a first embodiment of the device according to the invention is shown in several views. In Fig. 1, the embodiment is shown in a side view. Fig. 2 shows schematically a plan view of the winding device with upstream guide roller of the device of Fig. 1. The following description applies, as far as no explicit reference is made to one of the figures, for both figures.

The device according to the invention is composed of a spinning device 1, a treatment device 7 and a take-up device 16, wherein a guide roller 12 is arranged in the transition between the treatment device 7 and the take-up device 16. The spinning device 1 contains a heated spinning beam 2, which is connected via a melt feed 3 with a melt source, not shown here, for example, an extruder. In this case, a plurality of spinning devices can be assigned to a common melt source, wherein the spinning devices could be set up parallel to one another. The spinning beam 2 has on a bottom side a plurality of spinnerets 4.1, 4.2 and 4.3. The arrangement of the spinnerets and the number of spinnerets is exemplary. Thus, a plurality of spinnerets can also be mounted in a plurality of rows or circular arrangements on the underside of the spinner.

Each of the spinnerets 4.1 to 4.3 has a multiplicity of nozzle bores in order in each case to extrude a filament bundle of a multifilament yarn 6.1 to 6.3 from a polymer melt supplied via the melt feed. Below the spinning beam 2, a cooling shaft 5 is provided, through which the filament bundles are guided for the purpose of cooling. For this purpose, a cooling air flow is preferably generated in the cooling shaft 5 by an injection not shown here. In the outlet region of the cooling shaft 5, a preparation device 9 and a plurality of yarn guides 8.1 to 8.3 are arranged in order to combine the filament bundles into the respective yarns 6.1 to 6.3. The preparation device 9 is hereby exemplified as a Roller preparation device shown, in which the filament strands are guided on the circumference of a roller. The surface of the roller is wetted with a spin finish. Other systems such as a pencil preparation or nozzle preparation can also be used.

The spinning device 1 is arranged downstream of the treatment device 7, which preferably has at least one take-off godet, through which the threads are withdrawn together from the spinning device 1. The threads 6.1 to 6.3 pass through the treatment device 7 essentially in parallel run, the thread spacing being determined by a yarn guide strip 10 assigned to the treatment device 7. The threads 6.1, 6.2 and 6.3 are thus gathered together between the thread guides 8.1 to 8.3 and the thread guide strip 10 to a narrower thread spacing.

The treatment device 7 is not explained in detail in this embodiment and may be formed by any treatment units. The nature of the treatment device 7 depends essentially on the type of thread to be produced. For example, crimped and uncrimped threads as well as partially drawn or fully drawn threads can be produced. In particular, the device according to the invention is well suited for the BCF method as well as the FDY method and similar methods. In the following, some embodiments of the treatment device 7 will be described in more detail.

After the treatment, the threads 6.1 to 6.3 must be guided to the individual winding points 17.1, 17.2 and 17.3 of the winding device 16. The distance between two adjacent winding points 17.1 and 17.2 is substantially greater than the thread pitch of the threads 6.1 and 6.2 in the treatment device 7. To each of the threads 6.1, 6.2 and 6.3 under the same conditions and same thread guide ratios of the treatment device 7 to the take-up device 16 lead, the treatment device 7 in the yarn path a deflecting device 11 is arranged.

The deflection device 11 is in this case formed by a deflection roller 35, on which the yarn sheet with the threads 6.1 to 6.3 is deflected in its thread running direction by 90 °. The deflection roller 35 preferably has one guide groove per thread. Laterally next to the deflection 11, a driven guide roller 12 is arranged. The guide roller 12 is vertically aligned with its longitudinal axis. The guide roller 12 is associated with a freely rotatable Beilaufwalze 14 so that the yarn sheet can be performed with the threads 6.1 to 6.2 after deflection in several wraps on the circumference of the guide roller 12.

Below the deflection 11 and laterally next to the guide roller 12 are three winding positions 17.1 to 17.3 associated pulleys 15.1, 15.2 and 15.3 are arranged. The pulleys 15.1, 15.2 and 15.3 are each aligned with the longitudinal center of the winding points 17.1, 17.2 and 17.3. The pulleys 15.1, 15.2 and 15.3 are freely rotatable. In order to guide the group of threads with the threads 6.1 to 6.3 between the guide roller 12 and the guide rollers 15.1, 15.2 and 15.3 parallel, the guide rollers 15.1, 15.2 and 15.3 are each at the same height with the running of the guide roller 12 threads 6.1,6.2 and 6.3 arranged.

In the threadline are the pulleys 15.1 to 15.3 per winding point 17.1, 17.2 and 17.3 each a head thread guide 18 and a traversing device 20 downstream. Below the traversing device 20, a pressure roller 21 is provided, which is located on the surfaces of the coils 22 formed on a winding spindle 19. The winding spindle 19 is preferably driven in such a way that the threads 6.1 to 6.3 are preferably wound up at a constant winding speed to the spools 22.

In the embodiment shown in FIG. 1, the yarn sheet with the threads 6.1 to 6.3 after spinning with a low Absand B to Treatment led. The thread spacing B, which is referred to as the treatment distance, depends on the number of threads and on the type of treatment to be performed on the group of threads. For example, 2, 4, 6 or 8 threads can be treated simultaneously. However, the treatment distance B is usually much smaller than the thread pitch between two adjacent threads in the take-up device. This thread spacing W is referred to here as the winding spacing. The winding distance W thus indicates a measure of the pitch of the winding points 17.1 to 17.3 in the winding device 16. In order to transfer the group of threads from the guide with the treatment distance B as possible without different thread guides of the individual threads to the winding points 17.1 to 17.3 with the winding distance W, the group of threads is guided on the vertically oriented guide roller 12 with the Beilaufwalze 14. The deflection of the yarn sheet is carried out by the deflection 11, wherein the threads 6.1 to 6.2 are performed at the treatment distance B substantially. Thus, the guide roller 12 is repeatedly wrapped by the yarn sheet, the yarn spacing B remains substantially constant. After the threads are 6.1 to 6.3 performed in parallel and successively distributed to the individual pulleys 15.1 to 15.3 to be performed in the associated winding points 17.1 to 17.3. In the winding stations 17.1 to 17.3, the threads 6.1 to 6.3 are wound into coils 22, respectively.

The illustrated in Fig. 1 embodiment of the device according to the invention is basically suitable for any type of treatment of the threads. In this case, the deflecting device 11 and the guide roller 12 can also be advantageously integrated into the treatment process. Since not all treatment options in the production of synthetic threads can be shown at this point, some of the most important examples of a treatment device are shown below in Figures 3 and 4.

The embodiment of FIG. 3 shows a drafting system 23. The drafting system 23 is formed from a take-off godet 24 and a draw godet 25. Of the Abzugsgalette and the draw godet is assigned in each case an overrun roller 26, so that the group of yarns are guided in several wraps on the withdrawal godet 24 and the draw godet 25. To draw the yarn sheet, the godet godet 24 and the draw godet 25 is driven with a speed difference. For this purpose, the withdrawal godet 24 and the draw godet 25 are each driven by a godet drive 37. The threads are guided during the treatment with the treatment distance B.

FIG. 4 shows a further alternative of a treatment device 7, as could be used, for example, in the exemplary embodiment according to FIG. The embodiment of FIG. 4 comprises a take-off godet 24, a drafting device 23, a crimping device 27 and a take-off unit 30. The drafting system 23 is hereby formed by two driven draw godets 25.1 and 25.2. The drafting unit 23 is followed by a crimping device 27, which consists of a texturing nozzle 28 and a cooling drum 29. Here, a yarn plug 31 is formed from each individual thread of the yarn sheet, which is stored and cooled on the circumference of the cooling drum 29. After cooling, each of the yarn plugs 31 formed in this way is drawn off through the draw-off unit 30 into a crimped yarn. The withdrawal unit 30 is formed by a driven godet 33 and an associated overflow roller 26. The treatment device shown in Fig. 4 is thus suitable for producing crimped yarns. Since such crimped yarns are used directly after spinning and winding a further processing to a flat structure such as a carpet, on the one hand the threads must be wound into identical coils and on the other hand have the threads as identical as possible. For such treatment devices, therefore, the device according to the invention is particularly preferably suitable.

In Fig. 5, an embodiment of the device according to the invention is shown, as for example, from an integration of the embodiment of the processing device of FIG. 4 with the embodiment of inventive devices of FIG. 1 could be formed. In the embodiment of FIG. 5, the spinning device is identical to the embodiment of FIG. 1 executed, so that could be dispensed with a re-presentation. Compared to the embodiment of FIG. 1, however, the orientation of the spinning device is offset by 90 °, so that the spinning plane transverse to the longitudinal axis of the winding 16 runs.

The measures provided for the treatment and management of the group of threads aggregates are described in succession with reference to the threadline. First, the group of threads is withdrawn by a first withdrawal godet 24.1 of the spinning device. The Abzugsgalette 24.1 is a Vortangeleinrichtung 32 and a second Abzugsgalette 24.2 downstream. The second withdrawal godet 24.2 is followed by a drafting system 23, which is formed by the draw godets 25.1 and 25.2. The drafting device 23 is followed by the crimping device 27, which consists of the texturing nozzle 28 and the cooling drum 29. The cooling drum 29 is a deflection device 11 consisting of a plurality of freely rotatable guide rollers 36. Each of the guide rollers 36 is assigned to one of the threads 6.1 to 6.3. The deflecting device 11 is followed by a take-off unit 30 which is formed from a take-off godet 33 and the guide roller 12. The withdrawal godet 33 and the guide roller 12 are aligned vertically, wherein in the yarn path between the Abzugsgalette 33 and the guide roller 12, a Tangelvorrichtung 34 is arranged. The withdrawal godet 33 is associated with the godet drive 37 and the guide roller 12 of the roller drive 13. The Abzugsgalette 33 is assigned to an overflow roller, not shown here, so that the group of threads are guided in several wraps on the circumference of Abzugsgalette 33. Likewise, the guide roller 12 is associated with the Beilaufwalze, which is also not shown.

Laterally next to the guide roller 12, the pulleys 15.1 to 15.3 are arranged side by side at the same height. The pulleys 15.1 to 15.3 are assigned to the winding stations 17.1 to 17.3 of the take-up device 16. there follows in the yarn path the pulleys 15.1 to 15.3 directly the traversing device 20, so that the pulleys represent 15.1 to 15.2 the end of the traversing triangle.

In the embodiment of the device according to the invention shown in Fig. 5, the threads 6.1 to 6.3 after spinning and cooling first withdrawn from the Abzugsgalette 24.1 and then swirled in the Vortangeleinrichtung 32. The Vortangeleinrichtung 32 can also be advantageously arranged before the withdrawal godet 24.1. After the individual threads have been twisted, they are passed through draw-off godet 24.2 into the draw zones for drawing. For this purpose, the draw godet 25.1 and 25.2 are driven at different peripheral speed. After stretching, the threads are texturized separately and upset in each case a thread plug 31. After cooling the thread plug 31, the threads 6.1 to 6.3 are deducted from the take-off godet 33 from the circumference of the cooling drum 29. The yarn path of the threads is rotated by about 90 °, so that the group of yarns with substantially constant treatment distance B on the circumference of Abzugsgalette 33 and the guide roller 12 are performed in parallel. The crimped after texturing threads 6.1 to 6.3 are vortexed before winding by the Tangelvorrichtung 34 again.

The distribution of the threads 6.1 to 6.3 on the individual winding points 17.1 to 17.3 via the pulleys 15.1 to 15.3. For this purpose, the threads are drawn parallel to the longitudinal axis of the winding device 16 of the guide roller 12 and deflected at the respective guide rollers 15.1 to 15.3 by approximately 90 °. Thus, the parallel thread run on the circumference of the guide roller 12 is undisturbed until the expiration of the threads 6.1 to 6.3, the guide roller 12 is a thread guide bar 10 downstream, through which the separation of the threads is guaranteed 6.1 to 6.3. Thereafter, the threads 6.1 to 6.3 are guided to the lying in a common plane pulleys 15.1 to 15.3.

The structure and the arrangement of the individual units of the illustrated embodiments are exemplary. Basically, the treatment of the threads and the leadership of the threads can be supplemented by other facilities not shown here, such as additional godets, heaters or turbulators or guide elements. It is essential here that the winding device for the distribution of the threads on the individual winding points is assigned in each case a deflection roller and a vertically oriented guide roller. Here, the guide roller can be integrated as the last godet of a deduction work. In addition, for example, an additional treatment of the threads could be achieved in that the winding points upstream pulleys are driven individually or in groups. Thus, advantageously, the thread tension can be adjusted in the threads for winding. By the device according to the invention can be achieved substantially the same conditions for guiding the threads between the treatment and the winding of the threads.

The positioning of the guide roller shown in the embodiments is also exemplary of a vertical orientation. In principle, positioning is possible in which the roll axis and a horizontal form a deviating angle of 90 °.

LIST OF REFERENCE NUMBERS

1

spinner

2

spinning beam

3

melt feed

4.1, 4.2, 4.3

spinneret

5

cooling shaft

6.1, 6.2, 6.3

thread

7

treatment facility

8.1, 8.2, 8.3

thread guides

9

preparation device

10

Thread guide bar

11

deflecting

12

guide roller

13

roller drive

14

Beilaufwalze

15

idler pulley

16

takeup

17.1, 17.2, 17.3

winding position

18

Yarn guide

19

winding spindle

20

Traversing device

21

pressure roller

22

Kitchen sink

23

drafting system

24,24.1,24.2

godet

25, 25.1, 25.2

godet

26

Guide roll

27

curling

28

texturing

29

cooling drum

30

off unit

31

yarn plug

32

Vortangeleinrichtung

33

godet

34

entanglement

35

idler pulley

36

leadership

37

godet

Claims (11)

1. An apparatus for producing and winding synthetic yarns, comprising a spinning device (1) for melt spinning the yarns, at least one treatment device (7) for treating the yarns, and a takeup device (16) for winding the yarns with a plurality of winding positions (17.1, 17.2, 17.3) that are distributed along a horizontal longitudinal axis of the takeup device (16), wherein for supplying the yarns a driven guide roll (12) and for each winding position a yarn guide (15.1, 15.2) are positioned upstream of the takeup device (16), characterized in that for guiding the yarns the guide roll (12) is aligned vertically to the roll axis and is disposed laterally adjacent the yarn guides (15.1, 15.2 15.3) in that way, that the yarns can be guided in a substantially parallel relationship with respect to each other between the guide roll (12) and the yarn guides (15.1, 15.2, 15.3).
2. Apparatus according to claim 1, characterized in that the yarn guides are formed by freely rotatable deflection rolls (15.1, 15.2, 15.3), wherein the deflection rolls (15.1, 15.2, 15.3) are respectively arranged at the same height as the yarns advancing from the guide roll (12) or wherein the deflection rolls (15.1,15.2, 15.3) are arranged at a common height.
3. Apparatus according to claim 2, characterized in that the deflection rolls (15.1, 15.2, 15.3) are constructed for being driven individually or in groups.
4. Apparatus according to anyone of claims 1 to 3, characterized in that a companion roll (14) having substantially the same alignment is associated with the guide roll (12), by which companion roll (14) the yarns are guidable in several loopings on the guide roll (12).
5. Apparatus according to anyone of claims 1 to 4, characterized in that the yarn guides (15.1, 15.2, 15.3) are arranged directly upstream of the winding positions (17.1, 17.2, 17.3) such that in the yarn path each of the yarn guides (15.1, 15.2) is followed by a traversing device (20) of the winding position (17.1, 17.2, 17.3).
6. Apparatus according to anyone of claims 1 to 5, characterized in that a deflection device (11) is arranged in the yarn path upstream of the guide roll (12) for varying the yarn path of the yarns by an angle preferably of 90°.
7. Apparatus according to claim 6, characterized in that the deflection device (11) is formed by one or more guide rolls (36) that are obliquely arranged between a direction of yarn advance upstream thereof and a direction of yarn advance downstream thereof.
8. Apparatus according to anyone of claims 1 to 7, characterized in that the treatment device (7) has a drawing mechanism (23) by which the freshly spun yarns are drawn before winding.
9. Apparatus according to one of claims 1 to 8, characterized in that the treatment device (7) has a crimping device (27) and a removal system (30) arranged downstream of the crimping device (27) by which the yarns are imparted with a crimp before winding.
10. Apparatus according to claim 8 or 9, characterized in that the guide roll is formed as last godet (25) of the drawing mechanism (23) or as last godet (33) of the removal system (30).
11. Apparatus according to claim 10, characterized in that the godets or godet units of the drawing mechanism or the godets or godet units of the removal system are aligned such that their longitudinal axes are substantially vertically.

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