EP2534285B1 - Device for drawing and winding a plurality of synthetic threads - Google Patents

Description

The invention relates to a device for removing and winding a plurality of synthetic threads into coils according to the preamble of claim 1.

In the production of synthetic threads, it is known that the freshly extruded multifilament yarns are drawn off after cooling by guide rollers in the form of godets or deflection rollers and are wound up into coils for storage separately. The number of simultaneously extruded threads is determined by the number of winding positions in a winding machine, through which the threads are wound simultaneously to form coils. In the prior art, basically two different device variants are known in order to pull off and wind up the threads which are freshly extruded parallel to each other.

A first variant of the device for stripping and winding synthetic threads based on the fact that the entire yarn sheet is performed together on the circumference of a guide roller. Such a device is for example from the WO 96/09425 known. Here are several godets freely cantilevered on a godet carrier. The godets extend parallel to several winding points, which are arranged side by side along a winding spindle. This device has the particular disadvantage that the entire yarn sheet is guided on the periphery of freely projecting godets, so that the godets must have a corresponding long projecting guide casing. In addition, the winding points are also arranged along a freely projecting winding spindle, so that thereby the number of simultaneously wound threads is limited.

In order to wind a maximum number of threads simultaneously to coils, double winder machines are increasingly used in recent times to the extruded from a spinning position in parallel threads split up in two sets of threads at the same time. Such a variant of the device for stripping and winding synthetic threads is from the DE 100 45 473 A1 known. From this variant of the device, the invention proceeds. The known device has two mirror-symmetrically arranged winding devices with a plurality of juxtaposed winding points. The winding stations are each assigned separate godets, which are held at two above the winding stations arranged godet carriers. Thus, such devices require a larger installation space. In addition, it is necessary that the godets arranged on the separate godet carriers are driven independently of each other, so that an increased control effort is required to maintain identical peripheral speeds.

In the prior art, however, other solutions for withdrawing and winding a large group of threads known. For example, from the US 3,844,496 and the US 6,210,143 in each case a device for withdrawing and winding a plurality of synthetic threads known, in which two groups of winding points a machine frame are formed one above the other, which are each arranged along freely cantilevered spindles side by side. For withdrawing and feeding the synthetic threads each free-projecting godets are provided, where all threads are performed in parallel together side by side. However, such devices generally have the disadvantage that the full bobbins must be changed out of two Doffebenen at the winding points. In addition, the godets require long overhanging guide coats or - as in the US 3,844,496 discloses - a very high occupancy density with small thread intervals, which increases the risk of collision and thread breaks.

It is an object of the invention to improve the known device for removing and winding a variety of synthetic threads into coils such that all threads can be withdrawn synchronously with optimal space utilization and wound into coils.

This object is achieved in that the godets are held together on a godet carrier and that the godet carrier is supported in a plane of symmetry between the winding turrets on a machine frame.

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

The invention is achieved by the proviso that the drive sides of the godets for receiving the godet drive must be kept freely accessible. In the apparatus according to the invention, the godets are arranged on two opposite operating sides of the godet carrier. The godet drives are integrated within the godet carrier between the operator pages. In addition, small thread deflections can be realized by the arrangement of the godet carrier in the plane of symmetry in order to be able to remove the freshly extruded threads from an upstream spinning device.

A particularly compact design of the device can be achieved by the development in which the winding stations, the winding turret and the godet carrier are held by a common machine frame.

Particularly advantageous is the arrangement in which the machine frame is formed in several parts and at least one above the winding spindles arranged traversing beams for receiving a plurality of winding stations associated with traversing units and that the godet carrier is disposed on an upper side of the traversing beam. This allows short thread lengths between the godets and the winding stations.

To accommodate the Spulrevolver the machine frame, depending on the nature of the Spulrevolver a one-piece housing or two mirror-symmetrical juxtaposed housing on. Thus, the winding stations can be formed in one machine unit or in two separate machine units.

Regardless of the machine frame concept, the development of the device according to the invention is particularly advantageous, in which at least one stand for supporting the traversing beam between the winding turrets is preferably arranged in the region of the free ends of the winding spindle. Thus, a plurality of godets can be safely arranged on the godet carrier, without being overloaded on the traversing beam of the machine frame.

In principle, the godets arranged on the opposite operating sides of the godet carrier can be driven by separate electric motors. Particularly advantageous, however, is the development in which the mirror-symmetrically opposite godets are driven synchronously together by an electric motor.

For this purpose, the guide shells of both godets are preferably connected directly to a drive shaft of an electric motor.

In order to realize a direct drive thereby, the drive shaft of the electric motor on two opposite drive ends, which are each rotatably connected to the guide shells of the godets.

In order to avoid a spreading of the threads in the distribution of the threads of a last galette to the winding stations, the development of the invention is particularly preferably used, in which the winding in the line immediately upstream godets are held laterally next to the winding stations and that the winding stations separate Deflection rollers are assigned for the distribution of the threads. For a yarn guide distribution from a substantially horizontally oriented distribution plane out is possible.

Depending on the thread type, the threads are stretched more or less before winding, so that the threads are guided by a plurality of in the yarn path successively arranged godets. For this purpose, preferably heated guide shells of godets are used, so that the development of the invention can be used, in which two drivable godets are arranged on two opposite operating sides of the godet carrier to a yarn path and that at least two mirror-symmetrically opposite godets have cup-shaped guide shells, each enclosing a heating means for heating a mantle surface.

The treatment of the threads can be extended by other additional aggregates, which are also arranged in mirror symmetry on the operating sides of the godet carrier according to a further advantageous development.

In this case, swirling devices for swirling the threads or also preparation devices for wetting the threads on the godet carrier can be arranged as additional units.

For withdrawing and winding the threads, the godets and the winding spindles are preferably supplied by a common drive and control electronics. Thus, the spindle drives of the winding spindles and the godet drives of the godets are connected together with a drive and control electronics.

The control electronics are preferably coupled to an operating unit for activating and deactivating all drives, so that all operations for removing and winding the threads can be performed centrally by an operator. Alternatively, however, it is also possible to provide two separate control units, which are connected to the control electronics and with which the arranged on the two sides operating units together with the operating pages associated winding stations are operated.

The invention will now be explained in more detail with reference to some embodiments of the device according to the invention with reference to the accompanying figures.

Fig. 1

schematisch eine Vorderansicht eines ersten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung

Fig. 2

schematisch eine Seitenansicht des Ausführungsbeispiels aus Fig. 1

Fig. 3

schematisch eine Vorderansicht eines weiteren Ausführungsbeispiels der erfindungsgemäßen Vorrichtung

Fig. 4

schematisch eine Seitenansicht des Ausführungsbeispiels aus Fig. 3

Fig. 5

schematisch eine Querschnittansicht eines Ausführungsbeispiels eines Galettenträgers mit zwei spiegelsymmetrisch angeordneten Galetten

Fig. 6

schematisch eine Querschnittansicht eines weiteren Ausführungsbeispiels eines Galettenträgers mit zwei spiegelsymmetrisch angeordneten Galetten

They show:

Fig. 1

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

Fig. 2

schematically a side view of the embodiment of Fig. 1

Fig. 3

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

Fig. 4

schematically a side view of the embodiment of Fig. 3

Fig. 5

schematically a cross-sectional view of an embodiment of a godet carrier with two mirror-symmetrically arranged godets

Fig. 6

schematically a cross-sectional view of another embodiment of a godet carrier with two mirror-symmetrically arranged godets

In the Fig. 1 and 2 a first embodiment of the device according to the invention for stripping and winding a plurality of synthetic threads is shown in several views. In Fig. 1 the device is a front view and in Fig. 2 shown in a side view. Unless an explicit reference is made to one of the figures, the following description applies to both figures.

The embodiment in Fig. 1 and 2 is arranged below a spinning device 1. The spinning device 1 is shown schematically in this embodiment by a spinning beam 2, a plurality of spinneret 2 juxtaposed spinnerets 3, a cooling device 4 and a chute 5 shown. Inside the spinning device 1, a plurality of filaments 6 are extruded and cooled in parallel side by side. For this purpose, a multiplicity of fine filament strands are extruded in each of the spinnerets 3 and, after cooling, are brought together in each case to form a thread 6.

Below the spinning device 1, the device according to the invention is arranged, which is formed in this embodiment by a take-off device 42 with multiple godets on a godet carrier 9 and two arranged below the godet carrier 9 winding point units 11.1 and 11.2.

The godet carrier 9 has two opposite operating sides 37.1 and 37.2, on each of which a plurality of driven godets are arranged. Thus, on the operating side 37.1 a withdrawal godet 7.1 and a draw godet 8.1 are held with each other on the godet carrier 9. On the opposite side 37.2 operating the mirror-symmetrically arranged godets 7.2 and 8.2 are held. The godet drives of the drawing godets 7.1 and 7.2 and the draw godets 8.1 and 8.2 are integrated in the godet carrier 9 and not shown here in detail and are explained in more detail below.

The godet carrier 9 is supported by a machine frame 10, which is arranged above two mirror-symmetrically juxtaposed winding point units 11.1 and 11.2. For this purpose, the godet carrier 9 is held in a plane of symmetry 38, so that the godets held on the two operating sides 37.1 and 37.2 are respectively assigned to the winding points 19.1 and 19.2 of the winding-point units 11.1 and 11.2.

In this embodiment, the winding point units 11.1 and 11.2 may be formed by individual winding machines, which can optionally be combined below the machine frame 10 with the godets of the godet carrier 9. As in the Fig. 1 and 2 is shown, each of the winding point units 11.1 and 11.2 each have a Spulrevolver 12.1 and 12.2, which is rotatably mounted in a housing 17.1 and 17.2. At each of the winding turrets 12.1 and 12.2 are each two cantilevered winding spindles 13.1 and 14.1 and 13.2 and 14.2 arranged. The winding spindles 13.1, 13.2 and 14.1, 14.2 are each rotatably driven via a spindle drive. In Fig. 2 For this purpose, the spindle drive 22.1 and 22.2 of the winding spindles 13.1 and 13.2 is shown. Along the winding spindles 13.1 and 14.1 extend the mirror-symmetrically formed winding points 19.1 and 19.2. The winding adjustment units 11.1 and 11.2 each have four side by side trained winding points 19.1 and 19.2. The number of winding stations is exemplary in this embodiment. Thus, in the embodiment after Fig. 1 and Fig. 2 a total of 8 threads parallel side by side withdrawn from the spinning device 1 and wound into coils. For winding up the threads each wicking 19.1 and 19.2 each associated with a traversing unit 16.1 and 16.2, which are held on a traversing beam 18.1 and 18.2. The traversing beams 18.1 and 18.2 extend over the entire length of the winding spindles 13.1 and 14.1 and each have a deflection roller 29.1 and 29.2 for each of the winding positions. Between the traversing units 16.1 and 16.2 and the winding spindles 13.1 and 14.1, a respective pressure roller 15.1 and 15.2 is provided to deposit the filaments during winding on the surfaces of the coils 39.1 and 39.2.

The godet 9 with the deduction godets 7.1 and 7.2 and the draw godets 8.1 and 8.2 are arranged on the projecting end of the winding spindles 13.1 and 14.2 such that the draw godets 8.1 and 8.2 are located laterally next to the winding points 19.1 and 19.2. Thus, a distribution of the threads 6 on the individual winding positions can be made by a substantially horizontally oriented distribution level out. For this purpose, each winding point 19.1 and 19.2 respectively pulleys 29.1 and 29.2 assigned.

At the opposite side of the winding position units 11.1 and 11.2 to the projecting end of the winding drive and control electronics 21 is provided, the supply and control lines to the drives and actuators of the winding point units 11.1 and 11.2 and the Godets 7.1, 7.2, 8.1 and 8.2 are connected. In Fig. 2 For this purpose, a connection between the spindle drives 22.1 and 22.2 as well as registered with the godet drives. The drive and control electronics 21 are connected to the operating units 20.1 and 20.2 via at least one control line. The operating unit 20.1 is provided for activating and deactivating all drives and actuators, which are used on the operating side 37.1 for removing the threads and for winding up the threads. The operating unit 20.2 is used for activating and deactivating the drives and sensors on the operating side 37.2 provided units.

This in Fig. 1 and 2 illustrated embodiment is particularly suitable to produce so-called POY threads and wind up. In this case, the draw godets 7.1 and 7.2 and the draw godets 8.1 and 8.2 are driven synchronously, wherein between the draw godets 7.1 and 7.2 and the draw godets 8.1 and 8.2 a slight speed difference is adjustable.

The in the embodiment according to Fig. 1 and Fig. 2 illustrated arrangement of the godet carrier 9 relative to the winding point units 11.1 and 11.2 is exemplary. In principle, the godet carrier 9 can also be arranged centrally to the projecting part of the traversing carrier 18.1 and 18.2. Thus, the threads would be distributed out of a substantially vertically extending distribution level out on the individual winding stations.

In Fig. 3 and 4 a further embodiment of the device according to the invention is shown, for example, to produce so-called fully drawn threads (FDY). The embodiment is in the Fig. 3 and 4 shown in different views, was dispensed with the presentation of a spinning device. In Fig. 3 the embodiment is in a front view and in Fig. 4 shown schematically in a side view. The embodiment according to Fig. 3 and 4 is essentially identical to the embodiment according to Fig. 1 and 2 so that only the differences are explained below.

At the in Fig. 3 and 4 illustrated embodiment, the winding stations 19.1 and 19.2 are identical in number to the aforementioned embodiment and integrated in a common winding point unit 11. Thus, the winding turrets 12.1 and 12.2 are held together with the winding spindles 13.1 and 14.1 together with the traversing units 16.1 and 16.2 in a machine frame 10. The machine frame 10 serves in this case at the same time for receiving the trigger device 42, which is arranged with the godet carrier 9 on an upper side of the machine frame 10.

The machine frame 10 is designed in several parts and has a housing 17 in which the winding turrets 12.1 and 12.2 are rotatably mounted. On the housing 17, a traversing beam 18 is arranged, which carries the traversing units 16.1 and 16.2 and the pressure rollers 15.1 and 15.2. At the top of the traversing beam 18, the godet carrier 9 is arranged in the plane of symmetry 38 extending in the middle region of the winding point units 11.

As from the illustration in Fig. 4 shows, the godet carrier 9 is held at the free end of the winding spindle on the traversing beam 18. To stabilize the traversing beam 18, a stand 40 is assigned, through which a support of the traversing beam 18 and thus of the godet carrier 9 takes place.

The godet carrier 9 has at its opposite operating sides 37.1 and 37.2 several godets and additional aggregates to stretch a plurality of parallel threads and treat in addition. In detail, the threads on one of the operating pages 37.1 and 37.2 via a heated withdrawal godet 7.1, two pulleys 23.1 and 23.2, another heated draw godet 8.1 and two successively arranged Führungsgaletten 24.1 and 25.1 out, as shown in the Fig. 4 evident. Between the draw godet 8.1 and the guide godet 24.1 a preparation device 26.1 is arranged to wetting on the threads. In the further course of the threads, a swirling device 27.1 is provided between the two guide godets 24.1 and 25.1, through which the threads are swirled separately.

After expiration of the lateral winding point 19.1 and 19.2 arranged Führungsgaletten 25.1 and 25.2, the threads are guided over the pulleys 29.1 and 29.2 to the winding points 19.1 and 19.2.

At the in Fig. 3 and 4 illustrated embodiment, the drives and actuators of the arranged on the operating pages 37.1 and 37.2 units and the winding station unit 11 are controlled together via an operating unit 20. The operating unit 20 is arranged on an end face of the godet carrier 9 and connected via at least one control line to a drive and control electronics 21. Thus, all drives and actuators can be activated and deactivated via the operating unit 20. Usually, such operating units 20 contain control algorithms that allow certain process sequences and, for example, a process start to run automatically.

This in Fig. 3 and 4 illustrated embodiment is so far particularly suitable for producing FDY threads.

At the in the Fig. 1 to 4 illustrated embodiments to allow a synchronous drive of the godets, two different concepts of godet drives are shown schematically below. In Fig. 5 is a first embodiment for driving two mirror-symmetrically held on a common godet carrier 9 godets 7.1 and 7.2 shown. The godets 7.1 and 7.2 were each a guide sheath 32.1 and 32.2, which are connected via a drive shaft 31.1 and 31.2 each with an electric motor 30.1 and 30.2. Both electric motors 30.1 and 30.2 are controlled by a common control unit 41 with identical drive speeds. The control unit 41 is usually integrated in the drive and control electronics 21. Warehousing the drive shafts 31.1 and 31.2 takes place in this embodiment by separate storage means 36.1 and 36.2 directly in the godet carrier. 9

In Fig. 6 is a further embodiment of two mirror-symmetrically held on the godet carrier 9 draw godets 8.1 and 8.2 shown. The draw godets 8.1 and 8.2 each have a cup-shaped guide casing 32.1 and 32.2, which are connected to two drive ends 34.1 and 34.2 a drive shaft 31. The drive shaft 31 is driven by an electric motor 30. For this purpose, the electric motor 30 is connected to the control unit 41. The drive shaft 31 is rotatably supported on both sides of the electric motor 30 via the bearing means 36.1 and 36.2 in the godet carrier 9.

In order to heat the guide casing 32.1 and 32.2, a cylindrical heating means 35.1 and 35.2 is held on the godet carrier 9 in each case, which protrudes into the cup-shaped guide casing 32.1 and 32.2 and thus leads to heating of the guide casing.

The in the FIGS. 5 and 6 shown drive capabilities of the mirror-symmetrically arranged godets can be combined in such a way that non-heated godets are driven by a common electric motor. In that regard, the in Fig. 1 to 4 shown godets on the operating pages preferably driven by one of these concepts.

LIST OF REFERENCE NUMBERS

1

spinner

2

spinning beam

3

spinneret

4

cooling device

5

chute

6

thread

7.1, 7.2

godet

8.1, 8.2

godet

9

Galettenträger

10

machine frame

11, 11.1, 11.2

Winding unit

12.1, 12.2

spindle turret

13.1, 13.2

winding spindle

14.1, 14.2

winding spindle

15.1, 15.2

pressure roller

16.1, 16.2

Traversing unit

17, 17.1, 17.2

casing

18, 18.1, 18.2

Traversing carrier

19.1, 19.2

winding positions

20, 20.1, 20.2

operating unit

21

Drive and control electronics

22.1, 22.2

spindle drive

23.1, 23.2

guide rollers

24.1, 24.2

Führungsgalette

25.1, 25.2

Führungsgalette

26.1, 26.2

preparation device

27.1, 27.2

swirling

28

Control and supply line

29.1, 29.2

idler pulley

30, 30.1, 30.2

electric motor

31.1, 31.2

drive shaft

32.1, 32.2

guide sheath

34., 1 34.2

Drive shaft end

35.1, 35.2

heating

36.1, 36.2

bearing means

37.1, 37.2

operation pages

38

symmetry planes

39.1, 39.2

Kitchen sink

40

stand

41

control unit

42

off device

Claims (15)

1. An apparatus for drawing off and winding a multiplicity of synthetic threads into bobbins in two groups of mirror-symmetrically designed winding stations (19.1, 19.2) which are formed next to one another in each case along a winding spindle (13.1, 13.2) held so as to project freely, with two rotatable winding turrets (12.1, 12.2) which are arranged next to one another and which in each case carry two such winding spindles (13.1, 13.2, 14.1, 14.2) for continuous winding of the threads in the winding stations (19.1, 19.2), and with a draw-off device (42) above the winding stations (19.1, 19.2), which have a plurality of mirror-symmetrically arranged godets (7.1, 7.2), the axes of which are oriented transversely to the winding spindles (13.1, 13.2),
   characterized in that the godets (7.1, 7.2) are held jointly on a godet carrier (9), and in that the godet carrier (9) is supported in a plane of symmetry (38) between the winding turrets (12.1, 12.2) on a machine stand (10).
2. The apparatus as claimed in claim 1, characterized in that the winding stations (19.1, 19.2) and the winding turrets (12.1, 12.2) are held by the machine stand (10).
3. The apparatus as claimed in claim 2, characterized in that the machine stand (10) is of multipart design and has at least one traversing carrier (18) arranged above the winding spindles (13.1, 13.2) and intended for receiving a plurality of traversing units (16.1, 16.2) assigned to the winding stations (19.1, 19.2), and in that the godet carrier (9) is arranged on a topside of the traversing carrier (18).
4. The apparatus as claimed in claim 3, characterized in that the machine stand (10) for receiving the winding turrets (12.1, 12.2) has a one-part housing (17) or two housings (17.1, 17.2) arranged mirror-symmetrically next to one another.
5. The apparatus as claimed in claim 3 or 4, characterized in that at least one pillar (40) for supporting the traversing carrier (18) is arranged between the winding turrets (12.1, 12.2).
6. The apparatus as claimed in one of claims 1 to 5, characterized in that the godets (7.1, 7.2) have drivable guide casings (32.1, 32.2) which can be driven synchronously by separate electric motors (30.1, 30.2) or by a common electric motor (30).
7. The apparatus as claimed in claim 6, characterized in that the guide casings (32.1, 32.2) of the two godets (7.1, 7.2) are connected directly to a drive shaft (31) of the electric motor (30).
8. The apparatus as claimed in claim 7, characterized in that the drive shaft (31) has outside the electric motor (30) two mutually opposite drive ends (34.1, 34.2), and in that each of the guide casings (32.1, 32.2) is connected fixedly in terms of rotation to one of the drive ends (34.1, 34.2).
9. The apparatus as claimed in one of claims 1 to 8, characterized in that the godets (8.1, 8.2) directly preceding the winding stations (19.1, 19.2) in the thread run are held laterally next to the winding stations (19.1, 19.2), and in that the winding stations (19.1, 19.2) are assigned separate deflecting rollers (29.1, 29.2) for distributing the threads (6).
10. The apparatus as claimed in one of claims 1 to 9, characterized in that in each case a plurality of drivable godets (7.1, 8.1) are arranged on two opposite tending sides (37.1, 37.2) of the godet carrier (9) to form a thread run, and in that at least two mirror-symmetrically opposite godets (8.1, 8.2, 7.2, 8.2) have guide casings (32.1, 32.2) of pot-shaped design which in each case surround a heating means (35.1, 35.2) for heating a casing surface.
11. The apparatus as claimed in one of claims 1 to 10, characterized in that in each case one or more additional assemblies (27.1, 27.2) for treating the warps are arranged on the opposite tending sides (37.1, 37.2) of the godet carrier (9).
12. The apparatus as claimed in claim 11, characterized in that the additional assemblies on each tending side (37.1, 37.2) comprise at least one intermingling device (27.1, 27.2) which generates separate interminglings on the threads of the respective warps.
13. The apparatus as claimed in claim 11 or 12, characterized in that the additional assemblies on each tending side (37.1, 37.2) have a preparation device (26.1, 26.2) which wet the threads of the respective warps separately.
14. The apparatus as claimed in one of the abovementioned claims, characterized in that the winding spindles (13.1, 14.1) are assigned a plurality of spindle drives (22.1, 22.2) and the godets (7.1, 8.1) are assigned a plurality of godet drives (30.1, 30.2), and in that the spindle drives (22.1, 22.2) and the godet drives (30.1, 30.2) are connected to common drive and control electronics (21).
15. The apparatus as claimed in claim 14, characterized in that the control electronics (21) are connected to a tending unit (20) for activating and deactivating all the drives (22.1, 22.2, 30.1, 30.2) or to two tending units (20.1, 20.2) for separately activating and deactivating the drives (22.1, 22.2, 30.1, 30.2) assigned to the two warps.

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