EP0909255A1

EP0909255A1 - Method for automatically changing reels of thread and a winding device with a bobbin changing device

Info

Publication number: EP0909255A1
Application number: EP98921359A
Authority: EP
Inventors: Horst Feiler; Klaus Rippstein
Original assignee: Zinser Textilmaschinen GmbH
Current assignee: Zinser Synthetics GmbH
Priority date: 1997-04-04
Filing date: 1998-04-01
Publication date: 1999-04-21
Anticipated expiration: 2018-04-01
Also published as: KR20000016242A; CN1220643A; JP2000511503A; EP0909255B1; US6056227A; TW404993B; WO1998045203A1

Abstract

In other to enable automatic changing of full bobbins on a winding device with a continuous thread feed, the invention provides for the following: a) the thread fed from the traversing thread guide is raised and fed into a cutting and suctioning device; b) the incoming thread is cut and suctioned; c) the full bobbin is allowed to roll out of the winding position along sloping tracks; d) the rolling movement of the full bobbin causes an empty bobbin to drop into a winding position; e) the incoming thread is placed on the empty bobbin. The device designed to carry out the various steps of the inventive method comprises a movable thread guide rail (23), a thread separating device (21) a thread suction nozzle (22), rolling tracks (14) for the full bobbin, fall tracks (16) for an empty bobbin (18) and a thread guide arm (25) which places the thread (5) around the incoming empty bobbin.

Description

Method for automatically changing thread bobbins and winding device with changing device

The invention relates to a method for automatically changing circumferentially driven thread bobbins on winding devices of spinning machines for processing continuously running, endless textile threads and a winding machine with a device with which such a method can be carried out.

Full spools are generally removed from such spinning machines while the machine is running in the so-called "wild change" and replaced by empty cores. Since the point in time at which bobbins are to be changed and the bobbins which are to be changed in each case is largely random, this change should be automatic by the machine and can be carried out independently of other winding stations at each winding station. This has the advantage that there are no waiting times for an operator or an operating robot. This, in turn, prevents standstills and loss of thread material when a bobbin is turned off when the bobbin is full, or excess lengths on the bobbins if they continue to run until the change process.

The object of the invention was accordingly to specify a winding device with a changing device by means of which a full bobbin can be replaced automatically against an empty tube and through which an uninterrupted thread is picked up during the changing process and is "disposed of". It accomplishes this task procedurally by the features of the characterizing part of claim 1 and device-wise by the features of the characterizing part of claim 2.

This device enables a process sequence in which individual successive steps are initiated and run automatically. Thus, not only the bobbin is released by the mere opening of the jaws holding a full bobbin, but rather the full bobbin automatically rolls out of the bobbin position m into a storage position and thereby causes the empty sleeve to be released by means of the flap that forms the subject of claim 4 from their provision, which then automatically drops the winding position. There is therefore no need for a separate actuating element which brings the empty tube into the winding position, nor for a sensor which senses the release of the winding position and then triggers the release of the empty tube.

Characterized in that the pivotable rail sections of claim 3 printed by the rolling full spool by itself m the course of the roll-off guide rails and also spring by itself m the course of the fall guide rails return, there is no need for an actuator for this displacement of the pivotable rail sections .

Arranging the thread separating device, the thread suction nozzle and the thread guide rail on a common carriage also has the advantage that only one actuating element is required for the functional displacement of these working elements.

The components of the bobbin changing device according to the invention require so little space laterally, in the direction of the adjacent winding devices, that they not only have to be accommodated in the pitch spacing available to the normal bobbin winder without an automatic changing device, but - as expressed in claim 6 - can also be carried out as a changing device for multiple winding devices.

According to claim 7, the thread guide device is arranged on a carriage which can be displaced in the m direction towards the winding point. This has the advantage that the thread guide device can be withdrawn for normal running from the area of the winding device and does not hinder its operation.

In a first embodiment, the thread guiding device is designed as a lever arm which can be pivoted about a horizontal axis in the mentioned carriage, at the free end of which a thread guiding pin is arranged to guide the thread in a functional manner.

If the Fadenleitvorπchtung m development of the invention is designed according to claim 9, it is achieved that the thread to be placed on the spool against the direction of a spool on the winding spool m inserted this and thereby securely detected and taken.

In the figures of the drawing, two exemplary embodiments of the invention are shown schematically. Show it

Fig. 1 is a side view of a first embodiment of the winding device when reaching the full state

Kitchen sink; FIG. 2 shows the winding device of FIG. 1 when laying out a full bobbin and taking up an empty tube; 3 shows the winding device of FIG. 1 when the thread is applied to the empty tube;

Fig. 4 is a front view of the winding device of Fig. 1;

5 shows the front view of a winding device corresponding to FIGS. 1 to 4 with two coils; 6 shows the side view of a second embodiment of the winding device when the thread is laid out; Fig. 7 is a plan view of the device for moving the

Thread cutting carriage; FIG. 8 the winding device of FIG. 6 when the thread is placed on the empty tube; 9 is a top view of the thread application device;

10 shows the front view of the winding device of FIG. 6.

Description of a first embodiment of the device

As can be seen from FIG. 1, the winding device 1 m has a supporting body 2, which is fastened to a machine frame (not shown in more detail here), a rotary drive 3 and a traversing thread guide 4, which feeds a thread 5 across the width of a bobbin 6 here. The coil 6 is rotatably mounted in a holder 7. This holder 7 has two jaws 8, which the sleeve 9 of the coil 6 is able to clamp at both ends. The jaws 8 can be moved by an actuating member 10, which is only indicated in FIG. 4, for example a motor or a fluidic or electromagnetic working element, for clamping or releasing the sleeve 9. The holder 7 of the coil 6 is arranged in a carriage 11 which can be pushed back and forth in the supporting body 2 by means of an actuating member 12, which is only indicated in FIG. 2, for example a motor or a fluidic or electromagnetic working element.

As can be seen in particular from FIG. 4, two narrow, downward-inclined roller guide rails 14 are arranged between the jaws 8 on the side cheeks 13, starting from the winding position A, onto which the end regions of the sleeve 9, which protrude beyond the winding of the coil 6 , can rest. The roller guide rails 14 end in a storage position B for the full spool 6. The roller guide rails 14 have a foldable rail piece 15, which, under the load of a spring (not shown in detail), prints the folded-up position. In the folded-up position, the rail pieces 15 form sections of fall guide rails 16, which lead the winding position A from a trough 17 of a supply C for an empty tube 18 m. In the area of the trough 17, a double-leaf flap 19 can be freely pivoted about an axis 20 between the drop guide rails 16.

On the supporting body 2, a thread carriage 29 is also advanced and retractable by means of an actuating member, not shown, for example in the form of a piston / cylinder unit, on which a thread separating device 21, not shown in all details, a thread suction nozzle 22 and a thread guide rail 23 are arranged, which are arranged together by means of a only actuating element 24 shown in FIG. 2, for example a motor or a fluidic or electromagnetic working element, are arranged together in the area of an incoming thread 5. The thread cutting device 21 can be of any known type and is therefore not shown in detail here. The thread suction nozzle 22 is also connected, in a manner not shown, to a pressure sink via an actuatable valve.

Also arranged on the supporting body 2 is a thread guide arm 26 which can be pivoted about an axis 25 and which has at its free end a transverse, short thread guide pin 27 which extends over the area of the thread separating device 21 and the thread suction nozzle 22 and also by a only m Fig. 2 shown actuating element 28 is automatically movable.

Also not shown is a control device which is connected to the above-mentioned actuation elements 10, 12, 24 and 28 and, if appropriate, to sensors for sensing positions of the work organs and which actuates them in a manner that is coordinated and functional. Description of the operation of the first embodiment

When the coil 6 is full, i.e. when the intended length of thread is wound onto it, which can be determined, for example, by means of a length measuring device (not shown), a signal is sent to the control device to initiate the changing process. This state is shown in Fig. 1. For this purpose, first the thread guide rail 23, the thread separating device 21 and the thread suction nozzle 22 are moved forward by the actuating element 24 into the course of the thread 5. The thread guide rail 23 is inclined so that it lifts the incoming thread 5 out of the traversing device 4 and leads to the thread separating device 21 and thread suction nozzle 22 arranged on the side of the bobbin 6. In the thread separating device 21, the thread 5 is separated and the thread center which continues to flow in is sucked in and out by the thread suction nozzle 22. The other strand of the thread 5 is wound onto the bobbin 6.

Then the jaws 8 are opened by the actuator 10 and release the sleeve 9 of the full coil 6 and thus the coil. The sleeve 9 of the coil 6 lies on the roll-Leit ^¬ rails 14 and rolled up by the inclination of the drive roller 3 in a direction towards their storage position B. In this case, it presses the folding rail sections 15 downward so that they both among the Fall guide rails 16 can pass through and the course of their roll guide rails 14 closes.

As it continues to unwind, the sleeve 9 of the full spool 6 pivots the flap 19 by running against its lower arm and thereby lifts with its other arm the empty sleeve 18 provided from the trough 17 of its supply C (this state is shown in FIG. 2) ) and drops them over the fall guide rails 16 into the winding position A. The course of the fall guide rails 16 is closed again after the folded-over rail pieces 15 have overflowed through the full coil by folding up the rail pieces. When the empty tube 18 has reached the winding position A, the jaws 8 are closed again and the tube is thereby gripped. Then the carriage 10 is retracted by acting on the actuating member 12 and the sleeve 18 is thereby placed on the drive roller 3 and offset in rotation.

Now the thread guide arm 26 is pivoted downward by the actuating element 28 and at the same time the thread separating device 21 and the thread suction nozzle 22 are pulled back by the actuating element 24. During its pivoting movement, the thread guide pin 27 of the thread guide arm 26 detects the thread running the thread suction nozzle 22 and places it around the empty sleeve 18 - this state is shown in FIG. 3. At its ends, the empty sleeve 18 advantageously has thread-catching grooves which are known per se and are therefore not shown here, m which the thread enters and m is taken along with the rotation of the sleeve, that is to say is wound up. When supply of the Fadenleitarmes smoothly pivot 26 makes this - as the thread ^¬ separating device 21, the Fadensaugduse 22 and the Fadenleitschiene are withdrawn 23 - m the effective range of the traversing yarn Chan- guidebook 4, with which the winding operation is resumed.

5 shows an embodiment of the invention for winding two, for example bifilar, processed threads 5 and 5 'onto two narrow bobbins 6 and 6' formed in a winding device 1 '. Here, the work organs directly assigned to the individual bobbins 6, 6 'are present twice in order to be able to operate the two threads 5, 5', the two bobbins 6, 6 ¹ and the two empty sleeves (not shown) in the same way during the changing process. Since the work organs are actuated in the same way during the change process, the actuating members in particular can actuate the same work organs together and therefore need only be present once. The sequence of the change process is otherwise the same as described above. A sensor connected to the control device, for example in the form of a light barrier, can be arranged on the winding position A, which sensor senses the presence of an empty sleeve 18 and only then, if this is the case, closes the control device via the control device (not shown) Baking 8 causes.

Description of a second embodiment of the device

In the embodiment of the winding device according to FIGS. 6 to 10, the thread carriage 29 of the embodiment of FIGS. 1 to 5 m is split into a thread separating slide 30 and m is a thread feed slide 31 which can be actuated independently of one another and successively perform m activity.

The thread cutting carriage 30 is - as shown in FIG. 7 - on a double-armed swivel lever 32 which can be rotated about a vertical axis by means of an actuating member 33, for example in the form of a piston / cylinder unit from its rest position in the direction of the arrow shown in dashed lines in FIGS. 6 and 7 on his drawn drawn working position to the front and inwards to move to the vertical central plane of the winding device. At this thread cutting carriage 30 is already above the ^¬ be written working members are thread-separating device 21, Fadensaug- nozzle 22 and Fadenleitschiene 23. As is apparent, be ^¬ is the thread-separating device 21 here comprises a bolzenformigen anvil 35 and an easily applied to this edge 36. By this thread-separating device 21, the thread can 5 m to the running direction, m which the cutting edge is applied to the anvil 35 36, pass through unhindered , In the other direction, he pulls the cutting edge against the anvil and is separated.

The thread feed slide 31 can be displaced by means of an actuating member 37, for example in the form of a piston / cylinder unit 37, not shown, in the direction of the arrow bm in a guide rail 38, which has an upper and a lower, the thread Laying slide 31 has leading runners and which - as can be seen from FIG. 10 - is arranged above the pivoted-out position of the thread separating slide 30. The piston rod 39 of the actuator 37 engages with a bolt 40 on the thread feed slide 31. This bolt 40 slides in a link 41 which is arcuate and closed in the end region 42.

At the front end of the thread feed slide 31, a thread guide lever 43 is pivotally mounted, which in the rest position is pressed by a spring 44 into the position shown in broken lines in FIG. 6 and in FIG. 8. The thread guide lever 43 is connected to a crank arm 45 which is engaged by a pull rod 46, the other end of which engages with a bolt 47 in a link 48 in the guide rail 38. 7Λm Fadenleithebel 43 is arranged a Fadenleitplatte 49, the contour of Fig. 9 is ersicht ^¬ Lich, and a thread-separating device 50 which may be formed according to the thread cutting device 21.

Description of the operation of the second embodiment

When the bobbin 6 is full, the thread cutting carriage 30 is first guided forward and inward into its working position into the area of the oscillating thread 5 by actuating its actuating member 33 according to arrow a - FIGS. 6 and 7. The thread guide rail 23 lifts the thread 5 from the traversing device 4 and leads it to the side in front of the thread suction nozzle 22 and into the thread separating device 21, which, however, is not yet effective in the given direction of travel of the thread. The thread 5 only takes the path 5 '.

As soon as the full bobbin 6 is lifted from the drive roller 3 and braked as described above (broken line in FIG. 6), the tension in the thread 5 collapses and it is drawn into the thread suction nozzle 22. As a result, its direction of rotation is reversed by the thread cutting device 21, it pulls the cutting edge 36 against the anvil 35 and jams itself and / or cuts itself off. One end of the thread is wound on the bobbin 6, the other, namely the thread 5 that continues to feed, is sucked into the thread suction nozzle 22. The thread cutting carriage 30 is then pivoted back and forth again, the thread 5 taking the thread path 5 ", which - as can be seen in FIG. 10 - lies in front of the thread feed slide 31.

Instead of the unrolled full thread spool 6, an empty sleeve 18 now falls as described above.

Then, as shown in FIG. 8, the thread feed slide 31 is pushed forward from its rest position into a dashed intermediate position by acting on its actuating member 37. The thread 5 running into the thread suction nozzle 22 is deflected hairpin-like into the thread path 5 ^Λ by the bearing pin 51 of the thread guide lever 43, which is provided with a thread groove, and a fixed thread guide 52. As soon as the bolt 40 on the thread feed slide 31 moves into the arcuate end region 42 (FIG. 6) of the link 41, the thread feed slide engages around the angled edge of the lower runner 53 of the guide rail 38 in the direction of arrow c into its working position shown in solid lines folded to the bend of the lower runner.

Since the bolt 47 rests on the pull rod 46 at the end of the link 48 on the guide rail 38, the thread guide lever 43 is pivoted in the direction of arrow d, its thread guide plate 49 catching the thread 5 in the upper strand of the hairpin-like deflected thread path 5 ^Λ and take away. The beveled leading edge 54 of the thread guide plate 49 leads the two crossing thread strands past one another. At the same time, the thread 5 is inserted into the thread separating device 50, which, however, is not effective due to the given direction of movement of the thread indicated by arrows in the thread path now 5 ° into the thread suction nozzle 22. In the out Drawn end position shown by thread feed slide 31 and thread guide lever 43, the thread 5 is pressed between the bearing bolt 51 of the thread guide lever 43 and the thread guide plate 49 into a thread catching groove 55 arranged in the sleeve 18, whereby it is gripped and taken along.

As soon as the thread 5 is gripped by the thread catching groove 55 and taken along in the direction of rotation of the sleeve 18, its direction of rotation is reversed, i.e. it is pulled out of the thread suction nozzle 22. As a result, the thread cutting device 50 comes into effect and cuts the thread 5. The rest of the thread is drawn into the thread suction nozzle 22, the incoming thread is gripped by the traversing thread guide 4 and wound onto the new sleeve 18 by laying it. So that the bobbin change is carried out and thread feed slide 31 and thread guide lever 43 can be pivoted back into their rest position or withdrawn.

It goes without saying that the embodiment of FIGS. 6 to 10 can also be carried out on bifilar winding devices according to FIG. 5.

LIST OF REFERENCE NUMBERS

, 1 'winding device

2 supporting bodies

3 drive roller

4 traversing thread guides

5 threads 5 ° Different thread paths, 6 'spool

7 bracket

8 jaws, 9 'sleeve

10 actuator

11 bobbin carriages

12 actuator

13 side cheeks

14 roll guardrails

15 foldable rail pieces

16 fall guardrails

17 trough

18 Empty sleeve

19 flap, two-armed

20 axis

21 thread cutting device

22 Thread suction nozzle

23 thread guide rail

24 actuator

25 axis

26 thread guide arm

27 thread guide pin

28 actuator

29 thread slides

30 thread cutting slides

31 Thread feed slider 32 swivel levers

33 actuator

35 anvil

36 cutting edge

37 actuator

38 rail

39 piston rod

40 bolts

41 backdrop

10 42 End area of the backdrop

43 thread guide lever

44 spring

45 cubic arms

46 tie rod

15 47 bolts

48 backdrop

49 thread guide plate

50 thread cutting device

51 Bearing pin of the thread guide lever

20 52 Fixed thread guide

53 Angled edge of the lower runner

54 leading edge

55 Thread catching groove a, fc>, c, d arrow directions

25 A winding position

B filing position

C. Deployment

Claims

claims

1. A method for automatically changing circumferentially driven thread bobbins on winding devices of spinning machines for processing continuously tending endless textile threads, characterized in that after a bobbin becomes full, the incoming thread is fed to a suction nozzle and a separating device, the separating device separate tapered thread center is fed into the suction device and the thread tread thread is wound onto the full bobbin; that the full bobbin is then released from its holder and abutment on a drive roller and rolls on an inclined path from the winding position into a storage position; that a ready empty sleeve is released from its ready position by the movement of the full bobbin and falls into the bobbin position in contact with the drive roller and in the holder in which it is detected; that the thread running into the suction nozzle is placed around the empty sleeve by means of a thread guide, through which it is grasped and taken along.

2. Spooling device on spinning machines for processing continuously tending, endless textile threads, with a device for automatically changing thread spools, which are held in a rotary bearing and are driven against the circumference of a drive roller, characterized in that the winding device (1) comprises the following parts: a thread separating device (21) which separates an incoming thread (5); - One of the thread separating device (21) upstream in the thread running direction thread suction nozzle (22), which receives the incoming strand of a separate thread (5); a holder (7) which receives bobbin sleeves (9, 9 ') and can be moved away from the drive roller (3); - Two, a full reel (6) from a reel position (A) in a storage position (B) leading, inclined roller guide rails (14); a trough (17) holding and releasing an empty sleeve (18) in a supply (C); - two, an empty sleeve (18) from the supply (C) in the winding position (A) leading guide rails (14); a movable thread guide device (26, 27; 31, 43, 49), by means of which the thread (5) running into the thread suction nozzle (22) can be placed against an empty sleeve (18) guided into the winding position (A).

3. Winding device according to claim 2, characterized in that the roller guide rails (14) and the fall guide rails (16) have common, foldable rail pieces (15) which are pressed under load of a spring in the course of the fall guide rails and through the weight of a full spool (6) rolling on the roller guide rails can be pressed into the course of the roller guide rails.

4. Winding device according to claim 2, characterized in that a two-armed flap (19) is provided which can be pivoted by a full spool (6) rolling on the roller guide rails (14) and thereby an empty sleeve (9) from the

Trough (17) of the provision (B) and to the Winding unit (A) guided and inclined guide rails (16) leads.

Winding device according to claim 2, characterized in that the thread separating device (21), the thread suction nozzle (22) and the thread guide rail (23) are arranged together in a slide which can be displaced by means of an actuating member (24).

6. Winding device according to claim 2, characterized in that the thread guide device has a fixed pivotally mounted, by means of an actuating member (28) pivotable thread guide arm (26) with a thread guide pin (27). (Fig. 1 to 5)

7. winding device according to claim 2, characterized by a guide rail (38) in which is displaceably guided and folded down in yarn piecing slide (31) by means of an actuating ^¬ member (37) at the end of a Fadenleithebel (43) is mounted, the Fadenleitvorrichtung the (49) and which can be pivoted by folding the thread feed slide by means of coupling members (46, 47) to place the thread guiding device on the empty sleeve (18) guided into the winding position (A). (Figs. 6 to 10)

8. Winding device according to claim 7, characterized in that the thread guide lever (43) is associated with a thread separating device (50).

9. Winding device according to one or more of the preceding claims, characterized by automatically acting thread separation devices (50) through which the thread (5) can pass unhindered in one direction and in which it is clamped and separated in the other direction.

10. Winding device according to claim 9, characterized in that the thread separating device (50) consists of an anvil (35) and an adjoining cutting edge (36).

11. Winding device according to one or more of the preceding claims, with a plurality of winding stations, in which a plurality of coaxially arranged coils are wound simultaneously, characterized in that the bobbins (6, 6 ') or sleeves (9, 9') directly assigned Working elements such as jaws (8), roller guide rails (14), fall guide rails (16), thread separating device (21), thread suction nozzle (22), thread guide rail (23) are provided for each winding unit.