EP2558626B1 - Apparatus for drawing off and winding up synthetic threads - Google Patents

Description

The invention relates to a device for stripping and winding synthetic threads in a melt spinning process according to the preamble of claim 1.

In the production of synthetic yarns in a melt spinning process, it is common to extrude, draw, draw and wind the yarns in groups simultaneously. The number of threads produced per group at the same time is defined by the provided winding stations of the take-up device, with which a synchronous winding into coils is possible. The production of the synthetic threads is therefore carried out with a plurality of spinning stations, wherein a spinning station extrudes a group of threads. Accordingly, the pull-off and take-up device has a plurality of drawers and take-up devices juxtaposed along a machine longitudinal side. Such a device for stripping and winding synthetic threads is for example from the WO 2005/052224 A1 known.

In the known device, a take-off device with several driven godets and a take-up device with several winding stations is provided per spinning station. The trigger devices are usually held firmly in a machine frame above the take-up device. The electrical supply takes place from a central supply station, which are connected via cabling with the drives of the trigger device and the take-up device. In addition to the complex wiring, the commissioning of the spinning stations has been found to be particularly problematic for new installations, since the trigger device and the winding device for the first time commissioned at the beginning of the process and their interaction can be checked. This results in a time-consuming commissioning of the trigger devices and the take-up devices in the spinning stations.

From the DE 10 2006 061 332 A1 It is also known to provide an electrical supply station for each spinning station at which the extraction devices and winders are connected in parallel by several supply lines to the power supply.

Accordingly, it is an object of the invention to provide a generic device for stripping and winding synthetic threads in a melt spinning process in which the take-off devices and winders used per spinning stations can be taken as quickly and safely in operation.

This object is achieved by a device according to claim 1. Advantageous developments of the invention are defined by the features and feature combinations of the dependent claims.

The invention is characterized in that arranged in the spinning stations deduction device and winding device form a self-sufficient unit that can be operated independently of the overall system individually. The per take-off device provided for take-off device and take-up device forms a self-sufficient machine unit whose drives and actuators can be tested before a first startup.

In order to enable short process interruptions in the event of malfunction or maintenance intervals, it is particularly advantageous that the extraction device and the winding device within the Spinning station are formed independently replaceable, the supply lines are detachably connected to the supply station. Thus, the supply lines can preferably be connected to the supply station by means of quick-release closures so that a quick replacement of the withdrawal device or of the take-up device can take place. Disassembly and assembly work directly on the trigger device to exchange individual godets, can thus move to a repair workshop. The complete replacement of a trigger device in the spinning station is carried out in a few minutes and avoids major process interruptions.

In order to enable a particularly compact arrangement of the draw-off devices and take-up devices of adjacent spinning stations, it is further proposed to arrange the supply stations and the take-off devices of adjacent spinning stations side by side on a rack platform which extends above the take-up device and which is supported by a plurality of support walls arranged between the take-up devices. The support walls are preferably designed as soundproof walls. Thus, on the one hand results in a chambering of the take-up, which in particular leads to increased noise insulation and on the other hand, the trigger means are securely held on the frame platform.

The trigger means form within the spinning station an exchangeable assembly which is releasably held to the rack platform.

For this purpose, the structural unit of the trigger device preferably has a plurality of transport openings for engaging a transport means. Thus, the replacement of the trigger device with a few tools can be performed quickly and safely.

In addition to the electrical power supply, there is also the possibility that individual control functions can be exchanged via the supply stations between the take-off device and the take-up device. Thus, according to a further development of the invention, provision is made for the supply station to have control electronics which are connected by a detachable control line to the withdrawal device and / or the take-up device. For example, the control electronics in the supply station could be used to control a heating device for heating a godet casing.

However, the supply station is preferably formed with a control manifold, which is connected via a plurality of detachable control lines with the trigger device and / or the take-up device. Thus, control functions can be exchanged between the take-off device and the take-up device via the control distributor of the supply station. Thus, within the spinning station, control commands for the withdrawal device and the take-up device could take place from a common operating station.

In order to be able to produce as many threads per spinning station as possible at the same time, the winding device per spinning station is formed by two mirror-image juxtaposed winding machines, which are connected to each other via detachable supply lines to the supply station and which are held interchangeable in the spinning position , Thus, at the same time many threads, preferably 16, 24 or 32 threads per spinning station can be produced.

The winding machines each have a control and drive electronics, which preferably contain a plurality of control devices for drives the trigger device and which are connected via detachable control lines to the control distributor of the supply station. This can be the For Galettenantriebe usual encapsulations of the control units integrate advantageous in the spinning station.

In order to increase the possibilities of use of the trigger devices is provided according to a further advantageous development, which are assigned in the supply stations per spinning station more stations to which a compressed air supply and / or preparation preparation of the trigger device and / or the winding device can be connected. Thus, for example, swirl nozzles can be integrated within the extraction device whose compressed air supply takes place via a compressed air station within the spinning station. The extraction device can thus be supplemented by further units such as swirl nozzles and preparation devices.

The device according to the invention is explained in more detail below with reference to an embodiment with reference to the accompanying figures.

Fig. 1

schematisch eine Querschnittansicht eines Ausführungsbeispiels der erfindungsgemäßen Vorrichtung

Fig. 2

schematisch eine Seitenansicht des Ausführungsbeispiels nach Fig. 1

Fig. 3

schematisch ein Ausschnitt der Seitenansicht des Ausführungsbeispiels nach Fig. 1 für eine Spinnstelle

Fig. 4

schematisch eine Draufsicht des Ausführungsbeispiels nach Fig. 3

They show:

Fig. 1

schematically a cross-sectional view of an embodiment of the device according to the invention

Fig. 2

schematically a side view of the embodiment according to Fig. 1

Fig. 3

schematically a section of the side view of the embodiment according to Fig. 1 for a spinning station

Fig. 4

schematically a plan view of the embodiment according to Fig. 3

In the Fig. 1 and 2 An embodiment of the inventive apparatus for stripping and winding synthetic threads in a melt spinning process is shown in several views. In Fig. 1 is a schematic cross-sectional view and in Fig. 2 schematically a side view of the embodiment shown. Unless an explicit reference is made to one of the figures, the following description applies to both figures.

As from the illustration in Fig. 2 As can be seen, for the production of synthetic threads in a melt spinning process, a plurality of spinning stations are arranged side by side to a machine longitudinal side. In each of the spinning stations, a group of threads are extruded in parallel side by side from a thermoplastic material, cooled and withdrawn through the device according to the invention and wound into coils. In the Fig. 1 and 2 For this purpose, the required in the spinning stations for extruding the threads process units are shown schematically, the sake of clarity in Fig. 2 only three spinning units 1.1, 1.2 and 1.3 are shown side by side. The structure of each spinning station 1.1 to 1.3 is identical, so that the process units required for extruding a thread group only with reference to a spinning station 1.1 with reference to the Fig. 1 and 2 be explained.

The spinning station 1.1 has a spinning beam 2, which carries a plurality of spinnerets 4 on a lower side. The spinnerets 4 are connected via distribution lines, not shown here with a spinning pump 3, which is connected to a melt source, not shown here, for example, an extruder. About the spinning pump 3, which is designed as a multiple pump, each of the spinnerets 4 is supplied with a melt stream under pressure. The spinnerets 4 generate by means of a perforated nozzle plate a plurality of filament strands, which are combined after cooling to one or more threads per spinneret.

To cool the freshly extruded filament strands, a cooling device 5, which has a cooling shaft 6, is provided in the spinning station 1.1 below the spinning beam. In the spinning station 1.1 closes in the Cooling shaft 6 a chute 7 to merge the yarn sheet 8 after melt spinning from a spinneret pitch out, so that the group of threads with little treatment distance can be performed side by side together. For this purpose, a guide means 9 is assigned to the outlet of the chute 7. The guide means 9 is preferably integrated in the device according to the invention for drawing off and winding up the threads.

The process units, which are held in the spinning station for extruding and providing the freshly spun multifilament yarns, are held on a machine frame not shown here on an upper level of the spinning plant.

In order to remove the yarn sheet 8 from the spinneret 4 after cooling, to stretch and to wind coils, the device according to the invention is used. At the in Fig. 1 and 2 illustrated embodiment, a take-off device and a winding device is provided per spinning station 1.1 to 1.3. Thus, the trigger device 10.1 and the winding device 13.1 of the spinning station 1.1 assigned. As from the illustration in Fig. 2 As can be seen, the take-off device 10.2 and the take-up device 13.2 of the spinning station 1.2 and the take-off device 10.3 and the take-up device 13.3 are assigned to the spinning station 1.3. The take-off devices 10.1 to 10.3 and the take-up devices 13.1 to 13.3 are identical, so that the structure will be explained below with reference to a spinning station 1.1.

For further explanation, in addition to the Fig. 1 as well to the Fig. 3 and 4 Referenced. The Fig. 3 schematically shows a side view of the embodiment of the device according to the invention for a spinning station and Fig. 4 a plan view of the embodiment of the device according to the invention also for a spinning station. In that regard, the following description applies to all figures.

Per spinning station 1.1 to 1.3, the take-off device 10.1 and a supply station 21.1 is arranged on a frame platform 19. The frame platform 19 extends above the take-up devices 13.1, 13.2 and 13.3 and is supported in each case via a support wall 20 arranged between the take-up devices 13.1, 13.2 and 13.3. The support walls 20 are preferably formed by soundproof walls, which serve for noise reduction of the winding devices 13.1, 13.2, 13.3.

At the top of the frame platform 19, a frame receptacle 39 is provided on each of the machine longitudinal side forming front side 40 per withdrawal device 10.1, 10.2 and 10.3. The extraction devices 10.1 to 10.3 are each designed as a transportable structural unit 37, which is held interchangeably in the frame receptacle 39 of the frame platform 19.

As from the illustrations in Fig. 3 and 4 shows, the assembly 37 has two spaced-apart transport openings 38, in which members of a transport means are inserted. Thus, in this example, the assembly 37 can be transported by a forklift for replacement.

Like from the Fig. 1 . 3 and 4 As can be seen, the take-off device 10.1 in the spinning unit 1.1 has a plurality of driven godets 11, to which a plurality of godet drives 12 are assigned. The electrical supply of the godet drives 12 via the supply station 21.1, which is arranged on a rear side 41 of the machine. The supply station 21.1 in the spinning station 1.1 has a plurality of supply connections 22.1 and 22.2, to which a plurality of supply lines 23.1 and 23.2 are detachably connected. Thus, the godet drives 12 of the trigger device 10.1 via the supply lines 23.1 to the supply station 21.1 connected. The supply line 23.1 are connected via a connection distributor 36 with the godet drives 12.

The electrical supply of the winding device 13.1 via the supply devices 23.2, which are also releasably connected to the supply terminals 22.2 of the supply station 21.1. The winding device 13.1 is formed in this embodiment by two winding machines 15.1 and 15.2. The winder 15.1 and 15.2 are arranged in mirror image to each other and each have a plurality of winding points 14.1 and 14.2 for winding the yarn sheet 8 to coil 42. Each of the winder 15.1 and 15.2 each has an electric unit 16.1 and 16.2, which contains the drive and control electronics. In that regard, the electric unit 16.1 and the electric unit 16.2 is connected via separate supply lines 23.2 to the supply station 21.1. Each of the winding machines 15.1 and 15.2 has a plurality of winding spindles 17, which are driven by spindle drives 18. The spindle drives 18 are connected to the electrical unit 16.1 or 16.2. The winding machines 15.1 and 15.2 form with the electrical units 16.1 and 16.2 two separate units which are detachably connected to the supply station 21.1 and can be replaced independently.

In order to enable an exchange of the data signals and control signals in addition to the electrical power supply, the supply station 21.1 and 25.2 has a control distributor 24, which has a plurality of control line connections 25.1. Thus, the electrical units 16.1 and 16.2 are connected via separate control lines 26.2 and 26.3 releasably connected to the control line terminals 25.2. The extraction device 10.1 preferably contains a control module, which is also connected via a control line 26.1 detachably connected to the control line terminals 25.1.

In addition, an operating station 27 is provided on the trigger device 10.1, via which the drives and actuators of the trigger device and the reeling device are operated. The operator station 27 is also detachably connected via a control line 26.1 to one of the control line connections 25.1.

In the illustrated embodiment, it is thus advantageous to integrate control devices of the trigger device 10.1 in the electrical construction units 16.1 and 16.2 of the take-up device 13.1. Thus, it is common practice that the inverters of the godet drives 12 are integrated in central control cabinets, since the environment of the godets 11 in the extraction device 10.1 by volatile components in the threads require increased encapsulation requirements. In that regard, the electrical units 16.1 and 16.2 of the winding device 13.1 are particularly suitable for shielding such control units. The take-off device 10.1 and the winding device 13.1 thus form a machine unit within the spinning station 1.1, which can only be operated together. Moreover, each unit 10.1 and 13.1 is interchangeable and testable outside the spinning station. Thus, already drives and actuators can be checked before putting a trigger device 10.1 and the take-up device 13.1. In that regard, by connecting to the supply station 21.1 fast commissioning possible.

At the in Fig. 1 Deduction device 10.1 shown, in addition to the drawing further treatment steps are provided to treat the yarn sheet 8 before winding. Thus, in the extraction device 10.1, a preparation device 31 and a swirling device 28 are integrated in order to carry out a wetting of the threads and a swirling of the threads. In order to ensure a connection possibility for the compressed air supply and the fluid supply within the spinning station 1.1, a compressed air station 34 with a compressed air connection 29 and a fluid station 35 with a fluid connection 32 is provided in this embodiment on the rack platform 19 per spinning station. The swirler 28 is over a Compressed air line 30 releasably coupled to the compressed air port 29. Likewise, the preparation device 31 is detachably connected to the fluid connection 32 via a fluid line 33. Thus, the interchangeability of the trigger device 10.1 within the spinning station with additional process units executable.

In that regard, the formation of the trigger device 10.1 is exemplary. Basically, the number of godets, the arrangement of the godets and the arrangement of other process units are only exemplary and arbitrary interchangeable. Likewise, the feeding of the threads from the take-off device to the take-up device, which takes place in this case per winding point via a deflection roller, is exemplary. Thus, a last godet of the withdrawal device can also be arranged in the middle region of the winding points of the take-up device.

In the in the Fig. 1 to 4 illustrated embodiment, the supply station is used within the spinning station for power supply and for linking the control and data signals. In principle, however, it is also possible to supplement the supply station per spinning station with a control electronics, which executes, for example, fixed control algorithms on the trigger device and / or the take-up device.

The device according to the invention is suitable for any type of melt-spinning process for filaments, regardless of the type of melt preparation and the melt feed. Thus, the polymer can be fed directly from a polycondensation reactor to the spinning process. This would eliminate the granulation of the polymer and the remelting in an extruder as described.

LIST OF REFERENCE NUMBERS

1.1, 1.2, 1.3

spinning unit

2

spinning beam

3

spinning pump

4

spinneret

5

cooling device

6

cooling shaft

7

chute

8th

yarn sheet

9

guide means

10.1, 10.2, 10.3

off device

11

galettes

12

godet

13.1, 13.2, 13.3

takeup

14.1, 14.2

winding positions

15.1

Winder left

15.2

Spooling machine right

16.1, 16.2

Drive control electrical unit

17

spindles

18

spindle drives

19

frame platform

20

retaining wall

21.1, 21.2, 21.3

supply station

22.1, 22.2

supply connections

23.1, 23.2

supply lines

24

control manifold

25.1, 25.2

Control line connection

26.1, 26.2

control lines

27

operating station

28

swirling

29

Compressed air connection

30

Compressed air line

31

preparation device

32

fluid port

33

fluid line

34

Compressed air system

35

fluid station

36

manifoldsPumpsRadiatorsReservoirsTubingWater

37

unit

38

transport openings

39

frame seat

40

front

41

back

42

Do the washing up

Claims (9)

1. An apparatus for drawing off and winding up synthetic threads in a melt-spinning process having a plurality of spinning stations (1.1, 1.2, 1.3), a drawing-off device (10.1) having a plurality of driven godet wheels (11) and a winding device (13.1) having a plurality of winding stations (14.1, 14.2) being provided for each spinning station (1.1), it is being possible for adjacent drawing-off devices (10.1, 10.2, 10.3) and adjacent winding devices (13.1, 13.2, 13.3) to be driven independently of one another,
   and wherein
   a separate supply station (21.1, 21.2, 21.3) is provided for each spinning station (1.1, 1.2, 1.3), and in that the drawing-off device (10.1) and the winding device (13.1) of the spinning station (1.1) are connected to the supply station (21.1) in parallel by means of a plurality of supply lines (23.1, 23.2) for the purpose of electric power supply
   characterized in that
   the drawing-off device (10.1) and the winding device (13.1) are configured such that they can be replaced independently of one another within the spinning station (1.1), the supply lines (23.1, 23.2) being detachably connected to the supply station (21.1).
2. The apparatus as claimed in claim 1,
   characterized in that
   the supply stations (21.1, 21.2, 21.3) and the drawing-off devices (10.1, 10.2, 10.3) of adjacent spinning stations are arranged beside one another on a frame platform (19) which extends above the winding devices (13.1, 13.2, 13.3) and which is supported by a plurality of supporting walls (20), preferably sound-absorbing walls, arranged between the winding devices (13.1, 13.2, 13.3).
3. The apparatus as claimed in claim 2,
   characterized in that
   the drawing-off devices (10.1, 10.2, 10.3) in the spinning stations (1.1, 1.2, 1.3) each form a replaceable structural unit (37), which is held detachably on the frame platform (19).
4. The apparatus as claimed in claim 3,
   characterized in that
   the structural unit (37) of the drawing-off device (10.1) has a plurality of transport openings (38) for the engagement of a transport means.
5. The apparatus as claimed in one of claims 1 to 4, characterized in that
   the supply station (21.1) has control electronics (24), which are connected to the drawing-off device (10.1) and/or the winding device (13.1) via a detachable control line (26.1, 26.2).
6. The apparatus as claimed in one of claims 1 to 5, characterized in that
   the supply station (21.1) has a control distributor (24), which is connected to the drawing-off device (10.1) and/or the winding device (13.1) via a plurality of detachable control lines (26.1, 26.2).
7. The apparatuses as claimed in one of claims 1 to 6, characterized in that
   the winding device (13.1) for each spinning station (1.1) has two spooling machines (15.1, 15.2) arranged beside each other in mirror-image fashion, which are connected to the supply station (21.1) independently of one another via detachable supply lines (23.2) and which are held in the spinning station (1.2) such that they can be replaced.
8. The apparatus as claimed in claim 7,
   characterized in that
   the spooling machines (15.1, 15.2) each have control and drive electronics (16.1, 16.2), which include a plurality of control devices for drives (12) of the drawing-off device (10.1) and which are connected to the control distributor (24) of the supply station (21.1) via detachable control lines (26.2).
9. The apparatuses as claimed in one of claims 1 to 8,
   characterized in that
   the supply stations (21.1, 21.2, 21.3) for each spinning station are assigned further stations (34, 35), to which a compressed air supply and/or a preparation supply of the drawing-off device (10.1) and/or the winding device (13.1) can be connected.

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