EP2558626A1

EP2558626A1 - Apparatus for drawing off and winding up synthetic threads

Info

Publication number: EP2558626A1
Application number: EP11701385A
Authority: EP
Inventors: Helmut Weigend; Jochen Adler; Ludger SCHÖRMANN; Frank Steinhaus
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2010-04-16
Filing date: 2011-01-20
Publication date: 2013-02-20
Anticipated expiration: 2031-01-20
Also published as: JP5757992B2; WO2011128121A1; CN102844476A; EP2558626B1; JP2013527884A; DE102010015215A1; CN102844476B

Abstract

The invention relates to an apparatus for drawing of and winding up synthetic fibres in a melt-spinning process having a plurality of spinning stations. A drawing-off device having a plurality of driven godet wheels and a winding device having a plurality of winding stations are provided per spinning station, wherein adjacent drawing-off devices and adjacent winding devices can be driven independently of one another. In order for it to be possible to perform rapid start-up of the drawing-off device and the winding device in relation to individual spinning stations, according to the invention one electric supply station is provided per spinning station, which electric supply station is connected to the drawing-off device and the winding device by a plurality of supply lines for energy supply. The drawing-off device and the winding device are configured such that they can be exchanged independently of one another within the spinning station.

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 filaments in a melt spinning process, it is common to extrude, draw, draw and wind the filaments 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 synthesis 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 known, for example, from WO 2005/052224 Al.

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 proven to be problematic especially 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.

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 in that per spinning station, an electrical supply station is provided and that the trigger device and the winding device of the spinning station for energy supply are connected in parallel by a plurality of supply lines to the supply station.

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

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 malfunctions or maintenance intervals, the development of the invention is particularly advantageous, in which the extraction device and the take-up device are independent of one another within the spinning station. are formed exchangeable, wherein 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 take-off 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 becomes. 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 extraction devices form an exchangeable structural unit within the spinning station, which is detachably held on the frame 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.

They show:

Fig. 1 shows schematically a cross-sectional view of an embodiment of the device according to the invention

2 is a schematic side view of the embodiment of FIG. 1

Fig. 3 shows schematically a detail of the side view of the embodiment of FIG. 1 for a spinning station

4 is a schematic plan view of the embodiment of FIG. 3

1 and 2 an embodiment of the device according to the invention for stripping and winding synthetic threads in a melt spinning process is shown in several views. 1 is a schematic cross-sectional view and in FIG. see the embodiment shown. Unless an explicit reference is made to one of the figures, the following description applies to both figures. As is apparent from the illustration in Fig. 2, a plurality of spinning stations are arranged side by side to a machine longitudinal side for the production of synthetic threads in a melt spinning process. 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 FIGS. 1 and 2, the process units required in the spinning stations for extruding the threads are shown schematically, with only three spinning stations 1.1, 1.2 and 1.3 being shown side by side in FIG. 2 for the sake of clarity. The construction of each spinning station 1.1 to 1.3 is identical, so that the process units required for extruding a yarn group are explained only with reference to a spinning station 1.1 with reference to FIGS. 1 and 2.

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 the melt spin out of a spinneret pitch out, so that the group of threads with low treatment distance can be performed side by side together. For this purpose, a guide means 9 is assigned to the outlet of the drop shaft 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. In the embodiment shown in FIGS. 1 and 2, a take-off device and a take-up device are 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 can be seen from the illustration in FIG. 2, the extraction device 10.2 and the winding device 13.2 of the spinning station 1.2 as well as the take-off device 10.3 and the winding device 13.3 are assigned to the spinning station 1.3. The take-off devices 10.1 to 10.3 and the winding devices 13.1 to 13.3 are of identical construction, so that the construction will be explained below with reference to a spinning station 1.1.

For further explanation, in addition to FIG. 1, reference is also made to FIGS. 3 and 4. Fig. 3 shows schematically a side view of the embodiment of the device according to the invention for a spinning station and Fig. 4 is 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 sound insulation walls, which serve for noise reduction of the winders 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 can be seen from the illustrations in FIGS. 3 and 4, the structural unit 37 has two transport openings 38 arranged at a distance from one another, in which members of a transport means can be introduced. Thus, in this example, the assembly 37 can be transported by a forklift for replacement.

As is apparent from FIGS. 1, 3 and 4, the take-off device 10.1 in the spinning unit 1.1 more driven godets 11, which are associated with a plurality of godet drives 12. 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 supplier connected station 21.1. 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 winding machines 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 are connected to the supply station 21.1 via separate supply lines 23.2. 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 together with the electrical units 16.1 and 16.2 form two separate units, which are detachably connected to the supply station 21.1 and can be replaced independently of one another.

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.

Moreover, an operating station 27 is provided on the trigger device 10. 1, via which the drives and actuators of the trigger devices. tion and the winding 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 generally customary that the inverters of the godet drives 12 are integrated in central control cabinets, since the surroundings of the godets 11 in the case of the draw-off device 10.1 require an increased encapsulation requirement due to volatile constituents in the filaments. In that regard, the electrical units 16.1 and 16.2 of the winding device 13.1 are particularly suitable for shielding such control devices. 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, the connection to the supply station 21.1 enables rapid commissioning.

In the draw-off device 10.1 shown in FIG. 1, in addition to the drawing, further treatment steps are provided in order 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 to the compressed air supply and to 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 are provided on the rack platform 19 per spinning station in this exemplary embodiment. 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 extraction 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 further 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 embodiment illustrated in FIGS. 1 to 4, 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 control electronics which, for example, execute fixed control algorithms on the take-off device and / or the take-up device.

The device according to the invention is suitable for filaments for any melt-spinning process, irrespective 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. Reference numerals 1.1, 1.2, 1.3 spinning station

2 spinning beams

3 spinning pump

4 spinneret

5 cooling device

6 cooling shaft

7 chute

8 groups of threads

9 guiding means

10.1, 10.2, 10.3 extraction device

11 godets

12 godet drives

13.1, 13.2, 13.3 take-up device

14.1, 14.2 winding positions

15.1 Winder left

15.2 Winder on the right

16.1, 16.2 Drive control electrical unit

17 winding spindles

18 spindle drives

19 rack 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 tax distributors

25.1, 25.2 Control line connection 26.1, 26.2 Control lines

27 operator station 28 swirling device

29 compressed air connection

30 compressed air line

31 Prp aration device

32 fluid connection

33 fluid line

34 compressed air station

35 fluid station

36 connection distributor

37 unit

38 transport openings

39 frame holder

40 front side

41 back side

42 coils

Claims

claims

Apparatus for stripping and winding synthetic threads in a melt spinning process with a plurality of spinning stations (1.1, 1.2, 1.3), wherein one take-off device (10.1) with several driven godets (11) and one take-up device (13.1) with several winding stations (14.1 , 14.2) are provided and wherein adjacent extraction devices (10.1, 10.2, 10.3) and adjacent to winding devices (13.1, 13.2, 13.3) are independently drivable,

characterized in that

per spinning station (1.1, 1.2, 1.3) a separate supply station (21.1, 21.2, 21.3) is provided and that the take-off device (10.1) and the take-up device (13.1) of the spinning station (1.1) for electrical power supply in parallel by a plurality of supply lines (23.1, 23.2 ) are connected to the supply station (21.1).

Device according to claim 1,

characterized in that

the take-off device (10.1) and the take-up device (13.1) are designed to be interchangeable independently of one another within the spinning station (1.1), wherein the supply lines (23.1, 23.2) are detachably connected to the supply station (21.1).

Apparatus according to claim 1 or 2,

characterized in that

the supply stations (21.1, 21.2, 21.3) and the extraction devices (10.1, 10.2, 10.3) adjacent spinning stations are arranged side by side on a rack platform (19) extending above the on winding devices (13.1, 13.2, 13.3) and by a plurality of between the winding devices (13.1, 13.2, 13.3) arranged supporting walls (20) preferably soundproof walls is supported.

Device according to claim 3,

characterized in that

the extraction 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 releasably held on the frame platform (19).

Device according to claim 4,

characterized in that

the structural unit (37) of the trigger device (10.1) has a plurality of transport openings (38) for engaging a transport means.

Devices according to one of claims 1 to 5,

characterized in that

the supply station (21.1) has an electronic control unit (24) which is connected by a detachable control line (26.1, 26.2) to the draw-off device (10.1) and / or the take-up device (13.1).

Devices according to one of claims 1 to 6,

characterized in that

the supply station (21.1) has a control distributor (24) which is connected to the withdrawal device (10.1) and / or the take-up device (13.1) via a plurality of detachable control lines (26.1, 26.2).

Devices according to one of claims 1 to 7,

characterized in that

the winding device (13.1) has two mirror-image juxtaposed winding machines (15.1, 15.2) for each spinning station (1.1), which are connected to each other via detachable supply lines (23.2) to the supply station (21.1) and which are kept interchangeable in the spinning station (1.2).

9. Apparatus according to claim 8,

characterized in that

the winding machines (15.1, 15.2) each have a control and drive electronics (16.1, 16.2) which contain a plurality of control devices for drives (12) of the extraction device (10.1) and which are detachable via control lines (26.2) to the control distributor (24) the supply station (21.1) are connected.

10. Devices according to one of claims 1 to 9,

characterized in that

the stations (21.1, 21.2, 21.3) per spinning station further stations (34, 35) are assigned to which a compressed air supply and / or preparation supply the trigger device (10.1) and / or the take-up device (13.1) can be connected.