EP1960301A1

EP1960301A1 - Take-up device

Info

Publication number: EP1960301A1
Application number: EP06829519A
Authority: EP
Inventors: Claus Matthies
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2005-12-15
Filing date: 2006-12-12
Publication date: 2008-08-27
Anticipated expiration: 2026-12-12
Also published as: WO2007073860A1; US20080245921A1; JP5065290B2; CN101331078A; JP2009519188A; ATE488463T1; RU2008128352A; US8152090B2; CN101331078B; DE502006008358D1; EP1960301B1

Abstract

The invention relates to a method for catching and taking up as well as a winding machine for continuously winding up threads. In order to catch the thread on a winding spindle, two thread guides form a thread section upstream and downstream of the winding spindle. Preferably, said thread guides are simultaneously displaced in a synchronous manner during the catching process and in such a way that the thread section is guided vertically over the winding spindle. Preferably, the thread guides are simultaneously and synchronously displaced by coupling the thread guides to each other and displacing the same with the aid of a common drive unit.

Description

rewinder

The invention relates to a method for winding a continuously tapered thread according to the preamble of claim 1 and a winding machine according to the preamble of the independent claim. A generic winding method and a winding machine are known from the publication DE 29 07 848 Al.

Winding machines serve to wind continuous filaments into coils. For this purpose, the threads are first changed by a traversing device transversely to the thread running direction and guided over a rotating pressure roller. The pressure roller in each case places the threads on the coils that are also to be wound up. Several coils are arranged in alignment one behind the other on a common winding spindle. This makes it possible to wind several threads at the same time.

For automated bobbin change the winding machines are designed with a plurality of winding spindles which are cantilevered on a winding spindle carrier rotatable about an axis. By rotating the Spulspindelträgers the winding spindle is alternately pivoted in a Aufspulbereich and in a change range. In the winding area, the thread is wound on a sleeve to form a bobbin. After the bobbin is wound to the end, the winding spindle with the winding spindle carrier is swiveled into the changing area. By the rotation of the Spulspindelträgers at the same time stocked with empty tubes winding spindle is pivoted from the change area in Aufspulbereich. As a result, the yarn, which continues to flow towards the bobbin, comes into contact with the other winding spindle already rotating in this phase. On the winding spindle or on the empty sleeves catch elements are provided which detect the current thread. The thread is now wound up by this winding spindle. The thread connection between see the two winding spindles is separated or torn off in this process with a cutting means. Subsequently, the full bobbin is exchanged for an empty tube in the change area. During the described exchange process and immediately before the thread connection between the finished wound coil and the sleeve to be wound is separated, the thread runs on a certain portion of the finished wound coil. This forms a Fadenwulst, which is considered as the conclusion of the coil.

In the development of winding machines above all the reliability of the thread changing process is in the foreground. On the one hand, the catch element and, on the other hand, the thread guide during the thread change process are relevant as factors.

From the prior art, it is known either to integrate the catch element in the sleeve or to provide it on the winding spindle. The integration of the catch element on the sleeve means more elaborate and thus more expensive sleeves. In the case of a catching element on the winding spindle, on the other hand, the thread must be deflected more strongly, since the catching element is located further outside the traversing range of the thread. It is known for example from the published patent application DE 25 40 853 Al, instead of strongly deflecting the thread to move the winding spindle axially. However, this solution can no longer be implemented in the course of ever longer winding spindles for receiving an ever higher number of coils and in the course of ever higher Aufspulgeschwindigkeiten in modern take-up machines with the high stiffness and play-free bearings required there.

In order to deflect the thread axially during the thread changing process to a sufficient extent and at the same time to lead perpendicular to the winding spindle axis on the catch element and on the other hand to drive within the traversing range on the finished wound coil, the invention disclosed in DE 29 07 848 Al invention provides several thread guide elements , This is a first threadfull in front of the catch element, which guides the thread from the traversing area into the area of the catch element. Furthermore, a second Fadenführungs- element is arranged in the thread running direction behind the catch element. After the first thread guide element has led out the thread from the traversing area, the second thread guide element guides the thread into the area of action of the catching element. Finally, a third thread guide element is arranged behind the second thread guide element in the thread running direction so that the thread is returned to the traversing area.

Especially in connection with high wind-up speeds, the thread guide during thread catching is of particular importance. This on the one hand, because the safety against falling with increasing winding speed. In addition, aggravating added that the lower fishing safety can not be compensated by a higher residence time in the catcher, since very quickly accumulates a large amount of thread in this area. Rather, the dwell time in the region of the catch element would actually have to be reduced with increasing take-up speed, which results in a conflict of goals here.

It is therefore an object of the invention to improve the safety of catching the known winding machines.

The invention pursues the approach to improve the precision with which the thread is guided over the catch element at the moment of catching. This is done by a method in which a portion of the thread source to a Speicheπnittel, for example full bobbin or a Fadenabsaugpistole, running thread is moved and thus supplied to the catch element by the thread section between two movable in Spulspindelachsrichtung thread guide is guided and by this move both yarn guides at the same time. In one form of the method, the displacement of the thread section is divided into two movement sections. In a first movement section, the thread is first guided in the direction of the catch element. This can be done in the case of a bobbin change from the traversing range of the full bobbin. In a second movement section, the thread section is then finally fed to the catch element, so that it interacts with the catch element. In this case, the thread guides which define and guide the thread section are moved simultaneously in the second movement section.

In a preferred form of the method, the yarn guides thereby proceed at the same speed.

In a particularly preferred form of the method, the thread section is substantially orthogonal to the winding spindle axis, so that it is guided into the catch element in an ideal manner.

In a variant of the method, a reversal of the direction of movement takes place between the first and the second movement section. As a result, the thread section can be returned to the traversing area immediately after catching the thread.

In other forms of the method, the movement of the thread guide takes place partly successively or independently. As a result, special account can be taken of process sequences which take place immediately before the bobbin change.

In a particularly preferred form of the method, the running direction of the thread and the peripheral speed of the catching element are rectified on the winding spindle. This allows a jerk-free catching of the thread in the catch element. During the trapping process and until the thread is taken over onto the winding spindle, the thread is moved onto a spool mounted on a second winding spindle. Ie wound up. The thread is guided by a third thread guide so that it runs onto the peripheral surface of the coil.

A winding machine according to the invention for carrying out the method provides, in particular, means which exactly observe the maintenance of the angle and the speed with which the thread section is guided transversely over the catching element. The task of ensuring precision is achieved by the winding machine driving the two yarn guides, which are important for the precision of the yarn guide at the moment of catching, connected together by a common drive means. As a result, an exact guidance of the thread is achieved. In a preferred embodiment, a third thread guide is provided, which leads the thread behind the second thread guide back into the traversing range of the coil.

The connection between the first and the second yarn guide can be mechanical. But it is also conceivable and within the meaning of the invention to carry out this connection in that the common drive means consists of two individual drives, which are coordinated by means of a control, in the sense that they are synchronously movable.

In a preferred development of the invention, the two yarn guides are initially moved out of the traverse stroke with independent drive means in a first direction of movement. This makes it possible to independently process each of the thread guides for the thread guide optimally for this situation. For a second movement direction relevant for the catching process, the thread guides are then connected to one another and moved by the common drive means.

In order to be able to perform the movement in the one direction independently and in the other direction together, there is a play-related connection between the common drive means and at least one of the thread guides Commitment. In an alternative embodiment, this can also be effected by an elastic connection.

In a particularly preferred embodiment, the drive means are pneumatically executed. Pneumatic actuators in the form of pneumatic cylinders are particularly suitable for linear movements. In addition, two pneumatic cylinders can be used well together for opposite directions by switching the respective inactive pneumatic cylinder pressure-free.

The catch element is preferably designed such that the thread is caught by a catch hook during a transverse movement in the direction in which the thread guides are driven together.

An increased catch safety is achieved by a safety groove in which the thread is additionally guided during stabilization and thus stabilized.

Also, the safety catch is achieved by a guide of the thread, which is substantially perpendicular to the axis of the winding spindle. Whether this is exactly 90 ° or an angle that differs slightly from the vertical, ultimately decides the structure and the kinematics of the winding machine and can be determined empirically.

Therefore, in an embodiment of the invention, an adjusting element is provided with which this angle is adjustable.

As an alternative to the catch element on the winding spindle and a catch element on the sleeve is possible.

An embodiment will be described in more detail below with reference to the accompanying drawings. They show:

1, the winding machine according to the invention,

2 shows the front view of the winding machine according to the invention from FIG. 1, FIG. 3 shows the movement of the thread guides in detail,

Fig. 4 shows a further detail of the movement of the yarn guide, Fig. 5 shows an alternative embodiment of the common drive means of the yarn guide.

In Figure 1 and Figure 2, a winding machine according to the invention is shown. The frame 1 of the winding machine carries a rotatable Spulspindelträger 2, in which two winding spindles 3, 4 are rotatably mounted with their drives 5, 6. By rotating the winding spindle carrier 2, the winding spindles 3, 4 can each be pivoted alternately into a changing region 7 and into a winding region 8. Above the winding spindle 4 in the winding area, a pressure roller 9 is arranged. In the winding machine shown here, two threadlines are shown with two coils. This is representative of one or even a higher number of thread runs. The winding process takes place synchronously for all yarn paths. Even if only one threadline is described in the following description, this also includes other existing threadlines.

From a system not shown here for producing and treating threads, the thread 10 is fed via a head thread guide 11. The winding process, which is known in principle from the state of the art, will be described below, as it proceeds before the situation illustrated in FIG. The positions of the winding spindles, yarn guide and the yarn path therefore differ from FIG. The winding spindle 3 is still in the winding area 8 at this time. The tapered thread 10 is oscillated by the traversing device 12 within a traversing area 13 parallel to the axis of the winding winding spindle 4. Subsequently, the thread is guided over the rotatably mounted pressure roller 9 and wound on the spool 15, which is mounted on the winding spindle 3. The Winding spindle 4 is equipped with an empty sleeve 16 and is located in the change region 7.

At the moment in which the coil 15 has reached its final diameter, the winding spindle carrier 2 is rotated, so that the winding spindle 3 are brought into the change region and the winding spindle 4 in the winding area and thus now correspond to the representation in Figure 1. The direction of rotation of the winding spindle carrier 2 is chosen so that it corresponds to the direction of rotation of the winding spindles 3 and 4.

While the thread 10 continues to run on the spool 15, the thread 10 is guided in the region of traversing by a thread guide 17 by means of a thread guide drive means 20 out of the traversing region into the catching region 14. Below the winding spindle located in the winding spindle 4, the thread 10 is also guided by a yarn guide 18 by means of a yarn guide drive means 21 from the traversing region 13 in the capture area 14, while another, including provided Fadenfuhrer 19 the thread 10 before casserole on the coil 15 again into a certain portion of the traversing region 13, where the thread 10 forms a bead 23. Between the thread guides 17 and 18, a thread portion 10.1 is formed. The thread guides 17 and 18 are arranged on parallel to the winding spindle axis moving rods. In case of several thread runs, a corresponding number of thread guides are provided on the respective bar. The movement of the thread guides 17 and 18 out of the traversing region 13 in the direction of the catching area 14 is effected by the drive means 20 and 21. By guiding the thread in front of and behind the winding spindle 4 in the winding area, it is ensured that the thread precisely passes over the catching element 24 is led out, and then returned by the common drive means 22 is uniform, the catch element 24 crossing and caught there. The speed of the thread 10 and the peripheral speed of the catch element 24 have the same sign and about the same amount. By the common drive means it is ensured that the thread in a closely defined angle, usually perpendicular to the Spulspindelachse, on the catch element 24 is guided. The thread 10 is now taken by the catch element 24 of the winding spindle 3 in the winding area 8 and wound onto the tensioned on the winding spindle 3 sleeves 16 to form coils. Immediately after catching the connection to the coil 15 is disconnected.

In Figures 3 and 4, the movement of the yarn guide 17 and 18 during the catching is described in detail. The view corresponds to the view from Figure 1. By the drive means 20 and 21, not shown, the yarn guide and thus guided by the yarn guides 17 and 18 thread section 10.1 along the winding spindle 3 and in this view behind the winding spindle 3 first in a first movement section 28 is guided out of the traversing region 13 in the direction of the catching region 14, the thread section 10.1 being guided beyond the catching region. Subsequently, the yarn guides 17 and 18 are returned to a second movement section 29 by a common drive means 22 again in the direction traversing region 13. The catching takes place in this second movement section. The reversal of movement between the first movement section 28 and the second movement section 29 is advantageous, but not absolutely necessary, in the second movement section 29, the drive means 22 acts together with the rods on which the thread guides 17 and 18 are provided, that the over the yarn guides 17 and 18 guided thread section 10.1 is guided over the catch element 24 in a tightly toleranced angle. As a result, the required high catch safety is achieved even at high yarn speeds. The connection between the common drive means 22 and the thread guides 17 and 18 takes place here by a one-sided acting form-fitting coupling in the form of a lot. As a result, the connection is subject to play. Other constructive embodiments, for example a firm connection between the common drive means 22 and one of the yarn guides and a loose between the common drive means 22 and the other yarn guide are deducible for the skilled person and within the meaning of the invention. Same services as the lots also provide elastic elements such as feathers. As a rule, the thread runs perpendicular to the winding spindle axis. By an adjusting element 27, this angle can be adjusted and optimized. The catch element 24 is constructed here from a catch groove 25 and a catch hook 26. In this case, the thread falls when driving over the side of the catch element 24 initially in the catch groove 25 and is then reliably caught by the fishing hook 26. However, there are also other structures of the catch element 24, in particular without catch groove 25 conceivable and within the meaning of the invention.

Figure 5 shows a variant of the common drive means 22 shown in Figures 3 and 4. Here, the common drive means is realized by a common control, which coordinates the drives 20 and 21 and controls synchronously in the preferred case. A movement sequence can now look like that the drives 20 and 21 are initially individually controlled in a first section of the movement. In the second section of the movement, the drives 20 and 21 are coordinated by the controller 30 so that the movement takes place synchronously. For this example, stepper motors can be used or position-controlled drives whose position is detected by a position measuring system and the controller 30 is reported back.

LIST OF REFERENCE NUMBERS

1 frame

2 winding spindle carrier

3 winding spindle

4 winding spindle

5 drive

6 drive

7 changing range

8 winding area

9 pressure roller

10 threads

10.1 thread section

11 head thread guides

12 traversing device

13 traversing range

14 catch area

15 coil

16 sleeve

17 first yarn guide

18 second yarn guide

19 third thread guide

20 drive means of the first thread guide

21 drive means of the second thread guide

22 Common drive means

23 bead

24 catch element

25 fishing groove

26 fishing hooks

27 adjusting element First movement section Second movement section control

Claims

claims

A method for catching and winding a running thread (10) on a sleeve (16) held by a rotating winding spindle (4), wherein the thread is continuously pulled and picked up by a storage means (15) and wherein the thread is guided by a movement of a guide means in the axial direction of the rotating winding spindle (4) in a catching element on the circumference of the winding spindle (4) or the winding tube, wherein the thread (10) by the catch element (24) is detected, characterized in that a Thread portion (10.1) of the thread (10) between two yarn guides (17, 18) is formed and that by simultaneous movement of the yarn guide (17, 18) of the thread portion (10.1) of the thread (10) of the catching device (24) is supplied.

2. The method according to claim 1, characterized in that the movement of the yarn guides (17, 18) in two movement sections (28, 29) is divided, wherein in a first movement section (28) of the thread portion (10.1) guided in the direction of the catch element and in a second movement section (29) the thread section (10.1) interacts with the catch element (24), and that at least in the second movement section (29) the thread guides (17, 18) are simultaneously moved to guide the thread section.

3. The method according to claim 2, characterized in that at least in the second movement section (29), the yarn guides (17, 18) for guiding the yarn section are moved simultaneously and at the same speed.

4. The method according to claim 3, characterized in that at least in the second movement section (29) the thread guides (17, 18) for guiding tion of the thread portion are moved simultaneously and at the same speed, wherein the thread portion (10.1) is substantially orthogonal to the axis of rotation of the rotating winding spindle (4).

5. The method according to any one of claims 2 to 4, characterized in that between the first (28) and the second movement section (29) takes place a reversal of direction.

6. The method according to any one of the preceding claims, characterized in that the thread guides (17, 18) for guiding the thread section

(10.1) are moved partially in succession.

7.- Method according to one of the preceding claims, characterized in that the yarn guides (17, 18) are moved to guide the yarn partially independently.

8. The method according to claim one of the preceding claims, characterized in that the running direction of the thread (10) and the peripheral speed of the catching element (24) are the same at the location of the thread contact.

9. The method according to any one of the preceding claims, characterized in that the thread (10) by a wound on a second rotating winding spindle (3) coil (15) is continuously pulled and recorded.

10. The method according to claim 9, characterized in that the thread (10) before casserole on the bobbin (15) by a stationarily held third thread guide (19) is guided.

11. Winding machine for the continuous winding of each one winding unit associated threads (10) to form coils (15), each with a traversing device (12) for traversing the threads to be wound (10) in Spulenachsrichtung within a traversing range (13) a rotatably mounted Spulspindelträger (2), with a plurality of Spulspindelträger (2) rotatably mounted winding spindles (3, 4) for receiving the coils, wherein the winding spindles (3, 4) alternately by rotation of the Spulspindelträgers (2) in a Aufspulbereich for winding the Threads (10) and in a change region (7) for removing the finished wound coils (15) are guided, arranged at each winding station and with the winding spindle (3, 4) connected to catch elements (24) for fixing the thread, with a first in the Spulspindelachsenrichtung movable thread guide (17) per winding unit, the ^• in the direction of yarn travel in front of the winding spindle (4) in the winding area in the region of the traversing device (12) is arranged, and with a second thread guide (18) which can be moved in the winding spindle axis direction per winding station, which is arranged downstream of the winding spindle (4) in the winding area (8) and in front of the winding spindle (3) in the change area (7), characterized in that a drive means ( 22) is provided, which travel the first (17) and the second yarn guide (18) together, and that the thread guides are connected thereto.

12. Winding machine according to claim 11, characterized in that a third yarn guide (19) per winding unit is provided, seen in the yarn running direction between the second yarn guide (18) and the winding spindle (3) in the change region (7) and seen in the winding spindle direction within a is arranged by the stroke of the traversing device defined traversing range (13).

13. Winding machine according to claim 11 or 12, characterized in that the connection between the first (17) and the second yarn guide (18) while being moved together by the drive means (22) is a mechanical connection.

14. Aufspuhnaschine according to claim 11 or 12, characterized in that the connection between the first (17) and the second Fadenruhrer

(18), while they are moved together by the drive means (22), by the coordination of two drive means (20, 21) takes place.

15. Winding machine according to claim 11, characterized in that the first (17) and the second yarn guide (18) in an alternating direction of the

Changierhub out and in an opposite winding direction in the traverse stroke is moved into and that the yarn guides (17, 18) in the alternating direction of separate drive means (20; 21) are driven and driven in the winding direction of the common drive means (22).

16. Aufspuhnaschine according to claim 15, characterized in that the connection between the common drive means (22) and at least one of the thread rotors (17, 18) has play.

17. Aufspuhnaschine according to claim 15, characterized in that the connection between the common drive means (22) and at least one of the yarn guides (17, 18) is elastic.

18. Aufspuhnaschine according to any one of claims 11 to 17, characterized in that the drive means (20, 21, 22) act pneumatically.

19. Aufspuhnaschine according to one of claims 11 to 18, characterized in that the catch element (24) has a in of the traversing region (13) pointing away fishing hook (26) which cooperates with the thread (19) that the thread ( 10) during a shift of the thread Section 10.1 in the direction of the traversing range (13) is detected by the fishing hook (26).

20. Winding machine according to one of claims 11 to 19, characterized in that the catch element (24) has a winding spindle (3, 4) tangentially circumferential catch groove (25).

21. Winding machine according to one of claims 11 to 20, characterized in that the first (17) and the second yarn guide (18) are arranged to each other so that the thread (10) during the fishing process therebetween substantially perpendicular to the axis of the winding spindle ( 4) runs.

22. Winding machine according to claim 21, characterized in that an adjusting element (27) is provided, with which the angle between the thread (10) and the axis of the winding spindle (4) is adjustable.

23. Winding machine according to one of claims 11 to 22, characterized in that the catching element is mounted on the sleeve.