CN109722720B

CN109722720B - Device for drawing out and winding a plurality of threads

Info

Publication number: CN109722720B
Application number: CN201811267880.3A
Authority: CN
Inventors: R·沃斯
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2017-10-28
Filing date: 2018-10-29
Publication date: 2022-08-05
Anticipated expiration: 2038-10-29
Also published as: DE102017010143A1; CN115029805A; CN109722720A; CN115029805B

Abstract

The invention relates to a device for drawing out and winding a plurality of threads. For this purpose, the device has a plurality of winding stations along at least one winding spindle mounted in an elongate protruding manner. Each winding station is provided with a deflection roller for separating and distributing the threads. A plurality of godets and a yarn collecting device arranged upstream of the godets are provided for guiding and drawing off the threads. In order to simplify the handling and to allow a more flexible management of the process, according to the invention the thread collection device and at least one of the godets are arranged on a movable holding support, whereby the thread collection device and the godets are held at an adjustable working height.

Description

Device for drawing out and winding a plurality of threads

Technical Field

The invention relates to a device for drawing off and winding up a plurality of threads after melt spinning.

Background

In melt-spinning production of artificial threads, the melt-spun threads are drawn off by a plurality of godets and are wound up to bobbins in a plurality of winding stations arranged next to one another. In order to be able to guide the threads parallel next to one another in the form of thread groups, the threads are then bundled next to one another at short thread spacings, which is usually done by means of a thread guide reed. Furthermore, the transition between melt spinning and processing of the thread group is used to cut the threads by the thread collecting device and to send them to the waste bin by the suction system in case of any failure of the thread extraction or winding. Thus, filament extrusion in melt spinning can continue.

Such a device for drawing out and winding a plurality of threads is disclosed by WO2008/138827a 1.

In the case of the known device, the godet is arranged directly above the winding station, so that the thread can be fed to the winding station by the deflection roller from a substantially horizontally aligned distribution plane. This arrangement has proven excellent in practice for very compact arrangements with low installation heights to be achieved. In the known device, one of the godets is held in a movable manner here so that the thread groups are separated and distributed to the winding station during threading. In the event of a process interruption, a yarn collecting device arranged above the godet is required to obtain the yarn package. For this purpose, a mobile aspirating lance controlled by the operator is generally used. Depending on the size of the operator and depending on the position of the wire collecting device, other auxiliary devices may be needed if the working range of the operator is insufficient.

Disclosure of Invention

The object of the present invention is now to improve a device for drawing off and winding up a plurality of threads of the type mentioned above, so that on the one hand the ease of handling is increased and on the other hand it can be used more flexibly in a melt spinning plant.

This object is achieved in that the thread collection device and at least one of the godets are arranged on a movable retaining support, whereby the thread collection device and the godets are held at an adjustable working height.

The invention is distinguished in that a flexible introduction of the thread in respect of its height is obtained. Since a certain deflection angle and thus a certain thread spacing must be maintained in the transition between the melt spinning device and the godet system during the yarn bundling, the adjustable working height of the yarn collecting device of at least one of the godets brings the particular advantage that the desired thread distance from the spinning device can be individually adjusted. In addition, the working height of the thread collection device and of the godet can also be advantageously set according to the operator requirements. The thread collection device and the godet can thus be adjusted with respect to their working height to the requirements at the start of threading or at the time of rethreading.

In order to achieve a desired low installation height, in particular in the transition from the godet to the winding station, it is also provided that the thread collector and the godet on the holding support span the thread running plane transverse to the winding spindle. The thread can then be guided parallel to the winding station without unraveling the thread.

In order to be able to use the parallel thread guiding region in particular for further thread treatment, according to an advantageous development of the invention, the godet is associated with a twisting device (entanglement) held on the holding support. It is thus ensured that the thread guidance remains constant independently of the respective working height of the godet. The threads can therefore be entangled under the same conditions independently of the respective working height of the godet.

In order to be able to use the installation height of the winding station for the working height setting capability, the development of the invention is particularly advantageous in that the holding support is realized in the form of a height-adjustable carriage which is arranged in the vertical guide on the front end side of the winding spindle. In addition, the holding support can sometimes be used to cover the free projecting end of the winding station, in particular of the winding spindle. This avoids an intervention at the winding station during the winding of the bobbin.

In order to be able to set different working positions on the carriage, the carriage is advantageously coupled to a linear drive mechanism, whereby the carriage is selectively guided and locked in a plurality of working positions.

For ease of operation to be optimized, it is also provided that, above the winding station, one of the godets is arranged on a movable threading support (threading-up support) which guides the godet from a threading position into a working position for the purpose of dispersing the thread. An automated threading process can thus advantageously be realized.

The threading support is preferably guided on horizontally aligned guide rails by the actuator drive.

In order to obtain a defined thread guidance independently of the respective working heights of the thread collector and the godets, a freely rotatably mounted guide roller is arranged between the godets above the winding station, parallel to the axial direction of the godets. In this way, a parallel thread guidance is ensured independently of the respective position of the godet on the holding or threading support.

The thread collecting device is realized by at least one thread guide reed, one cutting device and one suction device, so that all functions of thread guiding, thread separating and thread suction are ensured. The guide wire reed is preferably designed movably here in order to be able to initiate the cutting off and suction of the thread.

The device for drawing out and winding up a plurality of threads according to the invention is in principle suitable for producing all common types of threads. The number of godets integrated into the device is determined by the desired thread treatment. Therefore, partially oriented yarns can be produced using a small number of godets, or fully oriented yarns can be produced using a large number of godets.

Drawings

The invention will be explained in more detail below by means of an embodiment of the device according to the invention and with reference to the drawings, in which:

fig. 1.1 and 1.2 schematically show side views of an embodiment of the device of the invention in a plurality of operating positions;

fig. 2.1 and 2.2 schematically show a front view of the embodiment of fig. 1.1 in a plurality of operating positions.

Detailed Description

The first exemplary embodiment of the device according to the invention is shown schematically in a plurality of operating states in the side views of fig. 1.1 and 1.2 and in a plurality of operating states in the front views of fig. 2.1 and 2.2. Fig. 1.1 and 2.1 show the exemplary embodiment in operation during the melt spinning process for drawing out and winding up thread groups. Fig. 1.2 and 2.2 show the device before the machining process is started.

The following description applies to all figures unless any one of them is explicitly mentioned.

An embodiment of the apparatus of the invention has a plurality of winding stations 1.1-1.4 arranged adjacent to each other in a machine frame 2. The frame 2 supports in the lower region a rotatably mounted winding turntable 4, which is connected to a turntable drive 9. Two spaced apart winding spindles 3.1,3.2 projecting in an elongated manner are arranged on the winding turret 4. The winding spindles 3.1,3.2 are rotatably mounted in the winding turret 4 and are each connected to a spindle drive 8.1, 8.2 at the rear side of the winding turret 4. By rotating the winding turret 4, the winding spindles 3.1,3.2 can be guided alternately in the working area and in the exchange area. In fig. 1.1 and 1.2, the winding spindle 3.1 is in the working area and the winding spindle 3.2 is in the replacement area.

For receiving the bobbins 6, the winding spindles 3.1,3.2 each have a winding bobbin 5 on the circumference for each winding station 1.1 to 1.4, the winding bobbins 5 being clamped to the circumference of the winding spindles 3.1, 3.2. The free ends of the winding spindles 3.1,3.2 project into a doffing gallery 32 for removing and removing bobbins.

The frame 2 is above the winding spindles 3.1,3.2 and is designed to project and support a rotatably mounted contact pressure roller 10. The contact pressure roller 10 extends over all winding stations 1.1 to 1.4, wherein the contact pressure roller 10 rests on the surface of the bobbin 6 during the winding of the bobbin 6.

A traversing device 11 having a traversing unit for each winding station 1.1-1.4 to traverse the respective thread back and forth in the winding station is arranged above the contact pressure roller 10.

One deflection roller 12 for each winding station 1.1 to 1.4 is held on the machine frame 2 above the traversing device 11. The deflection roller 12 in this embodiment is mounted freely rotatably. In principle, however, it is also possible to provide each deflection roller 12 with a dedicated drive mechanism. The deflection rollers 12 form the infeed of the winding stations 1.1 to 1.4, respectively.

A height-adjustable retaining socket 19 is provided on the projecting end of the frame 2. The holding support 19 in this exemplary embodiment is formed by a carriage 21, which is guided in a vertical guide 20 on the front end side of the winding spindles 3.1, 3.2. A vertical guide mechanism 20 is provided on one end side of the frame 2.

As can be taken from the views of fig. 2.1 and 2.2, the carriage 21 is connected to a carriage drive mechanism 22. The carriage 21 can be guided to different operating positions by a carriage drive mechanism 22. The carriage drive 22 is formed here, for example, by a shaft drive having a vertical axis.

As can be seen from the views in fig. 1.1, 1.2, 2.1 and 2.2, the thread collection device 15 is arranged in the upper region of the holder support 19 and the driven draw-off godet 14 is arranged in the lower region. In this embodiment, the wire collection device 15 is formed by a wire reed 25, a suction device 26 and a cutting device 27. The thread guide reed 25 has one guide groove for each thread, so that the threads of the thread group 7 are guided next to one another in parallel at a thread spacing. The wire spacing is in the range of 3 mm to 6 mm. The thread reed 25 is configured to be movable transversely with respect to the thread run and can be moved by an actuator 28 towards a cutting device 27 in order to cut the thread group 7. The suction device 26 is connected to a waste bin (not shown here) via a waste line 30.

In the lower region, the draw-off godet 14 is assigned to a twisting device 16 on the thread output side. The entangling apparatus 16 is also provided on the holding support 19. The entangling apparatus 16 has a treatment channel for each thread, into which compressed air is fed. For this purpose, the entangling apparatus 16 is connected to a source of compressed air (not shown here) via a compressed air line 29.

The height-adjustable retaining supports 19, in particular the thread collection device 15 and the withdrawal godet 14, can be used to maintain different working heights. For this purpose, in fig. 1.1 and 2.1, the carriage 21 is held in the lower position on the vertical guide 20 by means of a linear drive 22. In fig. 2.1 and 2.2, the carriage 21 is guided on the vertical guide 20 by a linear drive 22 into an upper working position. The thread collection device 15 and the draw-off godet 14 each have different working heights here.

In this embodiment, the draw-off godet 14 on the holder 19 interacts with the draw godet 13, which is held in a movable threading holder 23 above the winding station 1.1 to 1.4. The threading abutment 23 is guided in a substantially horizontal manner in the guide rail 31, wherein the threading abutment 23 can be moved back and forth between a threading position and an operating position by the actuator drive 24. The guide rail 31 is arranged on the assembly wall 18, which is supported on the upper side of the frame 2.

The drawing godets 13, which can be displaced horizontally by the displacement of the threading support 23, are used to distribute the threads of the thread group 7 to the winding stations 1.1 and 1.4 when the process is started. For this purpose, the drawing godet 13 is transferred from the threading position shown in fig. 1.2 into the operating position. The drawing godet 13 in fig. 1.1 is shown in the operating position of the drawing godet 13.

For the thread guidance, guide rollers 17 are provided on the assembly wall 18, which guide rollers are aligned in an axially parallel manner to the

godets

13 and 14. The guide rollers 17 are held so as to be freely rotatable, wherein the thread groups 17 are guided in parallel on the circumferential surfaces of the guide rollers 17. The guide roller 17 is arranged above the holding support 19 in such a way that the thread spacing between the draw-off godet 14 and the guide roller 17 has different lengths depending on the working height of the draw-off godet 14.

The embodiment of the device according to the invention for drawing off and winding up a plurality of threads is shown in fig. 1.1 and 2.1 in normal operation, for example as is desired in a melt spinning installation. For this purpose, the thread group 7 is drawn off from the spinning device (not shown here) by a driven draw-off godet 14. The threads of the thread group 7 are usually guided in the spinning device at relatively large distances, so that the thread group 7 is collected by the thread collecting device 15 to the desired tight thread distance. For this purpose, a thread guide reed 25 is used which has one guide groove for each thread of the thread group 7. In this regard, the thread groups 7 are guided in a parallel and adjacent manner on the circumferential surface of the draw-off godet 14.

On the output side, the thread groups 7 are first individually entangled by an entanglement unit 16, so that the filaments of the threads form cohesive threads which are required for the further processing of the threads. The thread is drawn here through a driven drawing godet 13, wherein the thread group 7 is deflected on the circumference of a guide roller 17. The drawing godets 13 are held in their operating position at the end side next to the winding stations 1.1 and 1.4.

After drawing the godet 13, the thread groups 7 are selected and fed individually to the winding stations 1.1-1.4 by means of respective deflection rollers 12. One thread of the thread group 7 is wound into a bobbin 6 at each winding station 1.1-1.4. For this purpose, the winding spindle 3.1 is held in the operating position. The operating position of the winding spindle 3.1 is substantially separated from the doffer gallery 32 close to the end face by the retaining abutment 19. The doffing corridor 32 serves to remove the wound bobbin 6 from the winding spindle 3.1 or 3.2 and to transport away said bobbin 6. The winding spindle 3.2 is then in the change position, in which the full bobbin has been changed to a winding bobbin. By means of the illustrated lower position and thus the low working height of the collecting device 15 and of the drawing godet 13, protection is provided against manual intervention of the winding member by a worker located in the doffer gallery 32.

The embodiment of fig. 1.2 and 2.2 is shown in the event of an interruption of the machining process. In this case, the retaining abutment 19 is held in an upper working position in which the wire collection device 15 and the withdrawal godet 14 have a maximum working height. In this case, the thread group 7 is received by the suction device 26 and is continuously guided to the waste thread bin through the waste line 30. A malfunction of the device or of the winding station can be remedied in this operating condition. Maintenance work can then also be carried out in this operating situation.

In order to thread the thread group 7 to the winding stations 1.1-1.4, an operator or an automatic machine picks up the thread group from the thread collecting device 15 by means of a suction gun, the threads being inserted into a thread guide reed 25. The thread group is passed through the peripheral surfaces of the drawing godet 14, the guide roller 17 and the drawing godet 13 held in the threading position in this order, guided by the thread suction lance. The suction lance is now fixed in the lower position on the machine frame 2. The further process steps for threading and distributing the threads of the thread group 7 are carried out automatically by moving the drawing godet 13 from the threading position to the working position. The threads of the thread group 7 are automatically dispensed here to the winding stations 1.1 to 1.4 and the winding of the threads on the winding spindles 3.1 or 3.2 is started by auxiliary devices (not shown in greater detail here).

The embodiment of the device for drawing out and winding up a plurality of threads according to the invention as shown in the figures is preferably suitable for the production of so-called POY threads. Such partially oriented threads can be produced by means of godets. In principle, however, embodiments are also possible in which a plurality of godets are provided on the assembly wall, for example in order to produce fully oriented yarn. It is likewise possible to set further different working positions and different working heights during operation. The specific thread spacing between the spinning device and the collecting device, for example, can then be varied depending on the process. In this connection, the device of the invention is extremely flexible in order to achieve the extraction, drafting and winding of the thread.

Claims

1. A device for drawing off and winding up a plurality of threads after melt spinning, having a plurality of winding stations (1.1-1.4) along at least one winding spindle (3.1-3.2) mounted in an elongated projecting manner, a plurality of deflection rollers (12) which are distributed to the winding stations (1.1-1.4), a plurality of godet disks (13,14) and a godet device (15) which is arranged upstream of the godet disks (13,14) in the thread course, characterized in that the godet device (15) and at least one of the godet disks (13,14) are arranged on a movable holding support (19), by means of which the godet disk (15) and the godet disks (13,14) are held at an adjustable operating height, and in that the holding support (19) is realized in the form of a height-adjustable carriage (21) which is arranged in a vertical guide (20) on the winding spindle (3.1,3.2) on the front end side.

2. The device according to claim 1, characterized in that the thread collector (15) and the godets (13,14) on the holding support (19) define a thread running plane transverse to the winding spindles (3.1, 3.2).

3. The device according to claim 1 or 2, characterized in that the godets (13,14) on the holder (19) are associated with a twisting device (16) held on the holder (19).

4. Device according to claim 1, characterized in that the carriage (21) is connected to a linear drive mechanism (22), by means of which the carriage (21) can be selectively guided and locked in a plurality of operating positions.

5. The device according to claim 1, characterized in that one of the godets (13,14) above the winding station (1.1-1.4) is arranged on a movable threading support (23) which guides the godets (13,14) from a threading position to a working position for the purpose of distributing the thread.

6. Device according to claim 5, characterized in that the threading abutment (23) can be guided on a horizontally aligned guide rail (31) by means of an actuator drive mechanism (24).

7. The device according to claim 5 or 6, characterized in that a guide roller (17) is provided above the winding station (1.1-1.4), which is mounted in a freely rotatable manner and is arranged axially parallel to the godet (13,14) so as to be located between the threading abutment (23) and the holding abutment (19).

8. Device according to claim 1, characterized in that the thread collection device (15) has at least one thread guide reed (25), a cutting device (27) and a suction device (26), wherein a guide groove is assigned to each thread on the thread guide reed (25).