DE19856594A1 - Bobbin winder - Google Patents

Abstract

The bobbin winder, with two bobbin spindles (17,18) on a turntable (20), has a gap (59) formed between the empty bobbin sleeve (19) and the pressure roller (10) by a limit stop (53). The limit stop (53) is formed by a limit surface (54) at the turntable and a cam (52) at the roller carrier (12). The limit surface is brought into contact with the cam (52) by rotation of the turntable (20). The limit surface (54) and the cam (52) are set so that the cam (52) rides on the limit surface (54) during a partial rotation of the turntable (20). A sliding surface can be at the cam (52) of the roller carrier (12) and a pin is at the limit stop (53) of the turntable (20). The gap between the limit surface (54) and the axis of the turntable (20) is set, during an angular section of the turntable rotation, so that the gap (59) is varied between the pressure roller (10) and the empty bobbin sleeve (19). Each spindle (17,18) has a limit surface (54.1,54.2) of a limit stop (53.1,53.2) at the turntable (20). At least one limit surface (54) is at the mounting end of the spindle (18), and can be as a non-rotating sliding ring to push the full bobbin axially on the spindle. A control (56) sets the drive (57) to rotate the turntable (20) according to the position of the pressure roller (10), so that the pressure roller (10) remains in a nominal position. The movement of the roller carrier (12) is registered by a sensor (58), working with an end position switch (55), linked to the control (56) to keep the pressure roller (10) in the nominal position when the yarn is caught and wound on to the sleeve. The gap (59) to catch and wind on the yarn is smaller or equal to the stroke movement of the pressure roller (10) between the end position and the winding position. An Independent claim is also included for a bobbin winding operation. When a bobbin is fully wound, the turntable rotates to carry the yarn to the bobbin sleeve on the other spindle, and the pressure roller is moved to an end position and out of contact with the full bobbin. The yarn is caught for winding on, and the turntable rotation brings the pressure roller out of the end position through the cam and limit surface, to press it against the bobbin sleeve where the yarn is to be wound on. When the yarn winding is secured, the bobbin sleeve spindle is rotated continuously or in steps, while the pressure roller remains in contact with the bobbin.

Description

The invention relates to a winding machine for winding a continuously incoming thread to a bobbin according to the preamble of claim 1.

Such a winding machine is known from EP 0 374 536. Here will a continuous thread wound into a bobbin, which There is circumferential contact with a pressure roller. The pressure roller is on one movable roller carrier rotatably mounted. After the coil is wrapped there is an automatic change from the full spool to an empty tube. The The full bobbin and the empty tube are each clamped on a bobbin spindle cantilevered are rotatably mounted on a turret. To hand over the Thread is the pressure roller by means of one acting on the roller carrier Drive lifted out of the circumferential contact of the coil, and by rotating the The full bobbin from the winding area into a winding turret Exchange area and the empty tube from the exchange area into the winding area pivoted. The thread is attached to the empty tube by means of auxiliary devices thrown. After the thread is caught and wound on the empty tube, the pressure roller is again in circumferential contact with the new coil to be formed brought.

In the known winding machine, the degree of wrap of the Thread on the empty tube when catching the thread by the position of the Pressure roller determined. On the other hand, the first thread layers on the Empty sleeve wound without contact to the pressure roller. Since the pressure roller as  Measuring roller is used to control the spindle speed, the winding of the Thread with uncontrolled spindle speed.

It is therefore an object of the invention, the winding machine mentioned above to develop in such a way that folding the thread from the full spool to Empty tube or catching and winding the thread on the empty tube in as short as possible. Further objects of the invention are the highly precise Reproducibility of the start-up processes and the simple structure of the Rotary control device of the winding machine.

This object is achieved by a winding machine with the Features of the characterizing part of claim 1 and by a method for Operate this winding machine according to claim 9 solved.

The invention is characterized in that the movement of the pressure roller and the rotation of the winding turret to turn the thread mechanically are coupled together. For this, the mechanical coupling takes place via a stop attached to the turret and one attached to the stop Cams of the roller carrier. The between the pressure roller and the The gap setting the empty tube is solely dependent on the relation between the Stop and the cam dependent. According to the invention there is no drive required to pull the platen out of position after the reel is wound to lift. By turning the turret, the stop surface comes into contact brought with the cam. If the rotation of the winding turret is continued the cam slides along the stop surface and causes the Roller carrier is moved from its position. This will push the platen in a defining the gap between the pressure roller and the empty tube Position led.

In a particularly preferred development of the invention Winding machine is the stop surface on the winding turret and the cam  trained the roller carrier. The stop surface moves with the Speed of rotation of the winding turret, the cam at least during a partial rotation of the turret slides along the stop surface. In order to there is the possibility that folding the thread and winding the thread on the empty tube is not in a fixed position of the turret must be done. As long as the partial rotation of the winding turret is not completed, there is a gap between the stop surface and the cam the pressure roller and the empty tube.

In a particularly preferred embodiment variant of the invention, the Stop surface on the roller carrier and the cams on the winding turret educated. This arrangement is particularly advantageous if for catching the Thread on the empty tube and for winding the thread on the empty tube with a gap of substantially the same size is set.

For wear protection and to improve the sliding properties, the Stop surface or the cam or both sliding surfaces with a coating be executed.

The development of the invention according to claim 4 has the advantage that during the relative movement between the stop surface and the cam substantially constant gap between the pressure roller and the empty tube sets.

In a particularly advantageous development of the invention according to claim 5 can determine the size of the gap between the pressure roller and the empty tube Rotation of the turret can be changed. The position of the pressure roller sets directly in the degree of wrap of the thread on the empty tube. This can be used to catch the thread Degree of wrap can be set. Furthermore, it needs to be started of the thread on the empty tube after the thread is caught on the empty tube,  a smaller distance than when catching the thread. This can be done easily Can be achieved by rotating the turret so that after the Thread is caught on the empty tube, the winding turret for winding in a another position is moved, in which the required for the winding Gap is set.

Since the pressure roller is only raised at the start of a new winding cycle is required, according to claim 6, each winding spindle is a stop surface or assigned a cam on the winding turret.

The configuration of the invention is particularly advantageous Winding machine according to claim 7. It is possible to make a gap with high Adjust the accuracy between the pressure roller and the empty tube.

In a particularly advantageous development of the winding machine Gap dimensioned such that a rotary control device of the winding turret can be activated by means of the movement of the pressure roller. For this, after the When the bobbin is fully wound, the turret is turned. The first with the coil pressure roller in circumferential contact moves with the full spool up to Installation on a limit switch. The limit switch is with the Rotary control device connected. The rotary control device controls the Rotary drive of the winding turret during the winding travel such that the Pressure roller is held in a target position. To do this, the movement of the Pressure roller senses. The limit switch now causes the Rotary control device is deactivated. After the winding turret the winding spindle with the empty tube has pivoted into the winding area and the Has come into engagement with the cam, the Move the pressure roller from its end position to its target position. This will make the Rotary control device activated. The gap for catching and winding the thread is however less than or equal to the stroke of the pressure roller between the Limit switch and the target position. This ensures that during the  Catching and winding the rotary control device no further turning the Revolving turret causes. Only after the coil has grown so that it comes into circumferential contact with the pressure roller, the pressure roller is through the growing coil out of its target position. The rotary control device now causes the winding turret to be turned further. As a result, the The cams and the stop surface are disengaged and the winding travel can begin. This particularly preferred development of the invention is characterized by a simple structure of the rotary control device. Using a sensor that the stroke movement of the pressure roller is detected and a limit switch can entire sequence of movements from catching the thread to the end of winding the spool can be controlled by the rotary control device.

The method according to the invention is characterized in that that by coupling the rotary movement of the turret and the Lifting movement of the pressure roller coordinates the movements to each other be carried out. This ensures a high reproducibility of the thread run guaranteed every thread change. This increases fishing safety. In addition can the gap between the pressure roller and the empty sleeve during the Execute so small that the period in which the Spool spindle speed is unregulated, is minimized.

Further advantageous developments of the invention are in the subclaims Are defined.

The following are some exemplary embodiments with reference to the attached Drawings described in more detail.

They represent:

Fig. 1 shows schematically a side view of a winding machine according to the invention when catching the thread;

Fig. 2 shows schematically the side view of the winding machine from Fig. 1 when winding the thread;

Fig. 3 schematically shows the front view of the winding machine of Figures 1 and 2; FIG.

FIGS. 4 and 5 schematically show further embodiments of the movement coupling between the pressure roller and the spindle turret.

In FIGS. 1 to 3 show a first embodiment of a winding machine is shown. Unless otherwise stated, the following description applies to all of FIGS . 1 to 3. The winding machine is supplied with the thread 1 without interruption at a constant speed. The thread 1 is first passed through the head thread guide 2 , which forms the tip of the traversing triangle. The thread then arrives at the traversing device 3. The traversing device 3 is designed as a so-called wing traversing. In this case, the thread 1 is guided back and forth along two guide rulers 6 by means of two oppositely rotating wings 4 and 5 , one wing taking over the guidance in one direction and then dipping under the guide ruler 6 , while the other wing guides the guide in the other Direction takes over and then dives under the guideline 6 . The blades 4 and 5 are driven by two rotors, which are connected to one another by a gear, and the drive 7 . The traversing device 3 is fastened to a traversing support 8 .

Behind the traversing device, the thread 1 is deflected at a pressure roller 10 at more than 90 ° and then wound on the spool 15 . In the winding operation, the pressure roller 10 bears against the surface of the bobbin 15 . The winding spindle 17 is eccentrically rotatably mounted on a rotatable winding turret 20 . The winding spindle 17 is driven by an electric motor (not shown here). On the winding turret 20 , a second projecting winding spindle is rotatably mounted eccentrically offset from the winding spindle 17 by approximately 180 °. An empty tube 19 is tensioned on the winding spindle 18 . The winding spindle 18 is also driven by an electric motor.

The winding turret 20 is rotatably mounted in the machine frame of the winding machine and is rotated by a rotary drive 57 in the direction of rotation indicated by the arrow. The rotary drive 57 serves to turn the winding turret 20 in the sense that the center distance between the pressure roller 10 and the winding spindle 17 is increased with increasing spool diameter in normal operation when the pressure roller is in contact with the surface of the spool. The winding turret is controlled depending on the diameter of the bobbin 15 by means of the rotary control device 56. The pressure roller 10 is rotatably mounted with its axis 9 on a roller carrier 12 . The roller carrier 12 is pivotally connected at the opposite end to the machine frame 14 via the pivot bearing 13 . Thus, the pressure roller 10 can execute a movement in the radial direction to the coil 15 . The pressure roller 10 is connected to a motor 50 which drives the pressure roller 10 at a constant peripheral speed. The traversing carrier 8 is fastened to the roller carrier 12 . This ensures that the distance between the pressure roller and the traversing remains unchanged when the pressure roller moves. A sensor 58 is arranged in the pivot bearing 13 and is connected to the rotation control device 56 . The sensor 58 serves to detect the movement of the pressure roller or the roller carrier and, in the event of a deviation from a defined target position, to generate a signal which is given to the rotary control device 56 . A limit switch 35 , which is connected to the rotary control device 56 , is arranged below the roller support.

A pin 52 is attached to the side of the pressure roller in the area of the pressure roller, next to the pressure roller. The pin 52 can be brought into engagement with a stop surface 54 of a stop 53 fastened to the winding turret 20 by rotating the winding turret 20 . The stop surface 54 is designed such that the roller carrier or the pressure roller is guided out of its end position.

The winding machine in FIGS . 1 to 3 is shown in a position which shows the thread being turned from the full bobbin 15 to an empty tube 19 . For this purpose, the full spool 15 was first pivoted out of the winding area in the direction of the changing area by means of the turret 20 . In this case, the pressure roller 10 resting on the circumference of the full bobbin 15 follows the movement of the winding turret 20 until the roller carrier 12 bears against the limit switch 55 . At the same time, the winding spindle 18 with the empty tube 19 is pivoted out of the changing area in the winding area. When the turret 20 rotates, the stop surface 54.1 of the stop 53.1 is brought into contact with the cam 52 of the roller support 12 . As the rotational movement progresses, the cam 52 of the roller carrier 12 slides along the stop surface 54.1 of the stop 53.1. The pressure roller 10 or the roller carrier 12 is guided out of the end position, and a gap 59 is formed between the pressure roller 10 and the empty sleeve 19 , and the thread 1 comes into contact with the empty sleeve 19. The situation is shown in FIG. in which the thread 1 is shortly before catching on the empty tube 19 . The thread 1 runs after wrapping the pressure roller on the empty tube 19 and from there to the full bobbin 15. In order to enable the separation of the thread in the area between the empty tube 19 and the full bobbin 15 , a thread deflection device 21 is provided on the winding machine Thread run is pivoted in the direction between the empty tube 19 and the full spool 15 from a rest position 27 into a deflection position 28 .

In the winding machine of Fig. 1 and 3, the yarn deflecting means 21 made of a pivoting arm 23 and a yarn deflection bar 25. The swing arm 23 is connected at its one end with a pivot drive 22. The thread deflecting rod 28 is located at the opposite end. The swivel drive 22 and the swivel arm 23 are arranged on the roller carrier 12 . A lug 24 is attached to the thread deflecting rod outside the traversing area. The extension 24 bears against a stop 29 in the deflection position 28 . In Fig. 1 the situation is shown shortly before catching. The stop 29 is attached to the turret 20 . The swivel arm 23 is coupled to a spring 26 so that the shoulder 24 rests against the stop 29 in a spring-loaded manner. The thread deflecting rod 25 has a guide edge 32 facing the thread, which extends essentially over the length of the bobbin ( FIG. 3). In the area of the bobbin end, which faces the catch slot 41 of the sleeve 19 , a guide groove 33 is made in the thread deflecting rod 25 . The guide groove 33 has a guide edge 35 which extends essentially transversely to the guide edge 32 . Thus, the thread 1 guided to and fro on the leading edge 32 can only be guided up to the leading edge 35 of the leading edge 33 . As a result, the traversing stroke for laying the thread on the bobbin 15 is narrowed. The distance between the end of the bobbin and the leading edge plane forms an edge zone on which the thread cannot be deposited.

A positioning device 11 with a movable thread guide is arranged in the area of the traversing. The positioning device enables the thread 1 to be lifted out of the engagement area of the traversing mechanism and then to be moved into a catching position.

The thread path is shown in Fig. 3. In Fig. 3 the winding machine is shown in the front view with several winding stations (four are shown). Since the sequence for turning the thread from the full bobbin to the empty tube is the same in each of the winding stations, the folding of the thread at a winding point is described. The positioning device 11 is located in the catching position outside the traversing area. While the positioning device 11 moves into the catching position, the thread 1 slides on the leading edge 32 of the thread deflecting rod up to the leading edge 35 of the guide groove 33. The catching position of the positioning device 11 is now offset outside the traversing area in relation to the leading edge 35 , so that the thread 1 enters one Fig. 3 takes oblique course. Here, the thread 1 runs into the area of the catch slot 41 of the empty sleeve 19 . As soon as the thread 1 is gripped by the catch slot 41 in the empty tube 19 , the piece of thread between the empty tube 19 and the full spool 15 is tensioned and tears by rotating the winding spindles 17 and 18 . Now the thread is returned to the traversing device by means of the positioning device. The thread is then wound on the empty tube 19 .

FIG. 2 shows the winding machine from FIG. 1, the thread I having already been caught on the empty tube 19 and now the first layers of thread being wound on the empty tube. A gap 59 is also formed between the pressure roller 10 and the empty sleeve 19 . In this embodiment, the gap 59 is advantageously designed such that the pressure roller 10 is in its defined target position. The rotary control device 56 is signaled by the limit switch 55 that the pressure roller is again in the working area. The sensor 58 is activated. Now the thread 1 is wound up in the position shown in FIG. 2 until the reel to be formed has grown in such a way that it comes into circumferential contact with the pressure roller 10 . The pressure roller 10 is then pressed out of the desired position by the growing diameter of the coil. As soon as the pressure roller 10 has left the desired position, the sensor 58 will send a signal to the rotary control device 56 so that the rotary drive 57 can be activated. By further rotation of the winding turret 20 , the pin 52 now comes out of contact with the stop 53. The winding travel thus begins.

In Figs. 4 and 5 show two further embodiments of a movement coupling between the winding turret and the roller carrier are shown. Due to the clarity, only a section from the respective winding machines was shown.

In FIG. 4, the pressing roller 10 is supported rotatably with its axis 9 in the roller carrier 12. On the side of the roller carrier facing the winding turret, a cam 52 is formed on the roller carrier. In the situation shown in FIG. 4, the cam 52 bears against a stop surface 54 . The stop surface 54 is formed by a push-off ring 31 fastened to the winding spindle 18 at the end of the bearing. An empty tube 19 is tensioned on the winding spindle 18 . The winding turret 20 is driven by the rotary drive in the direction of the arrow. The engagement of the stop surface 54 to facilitate the Abschieberinges with the cam 52, a sliding surface facing the abutment surface 63 is formed on the cam 52nd The sliding surface 63 and the stop surface 54 can have a wear protection layer or a sliding layer. The stop surface 54 is circular. The gap 59 formed between the pressure roller 10 and the sleeve 19 can thus be adjusted by changing the position of the winding turret 20 . For example, the thread could be caught at a maximum distance between the pressure roller and the empty tube. Then, the turret 20 is rotated further in the direction of rotation, so that the cam 52 slides along the stop surface 54 until a new, generally smaller distance between the pressure roller and the empty tube is set. In this position of the winding turret, the first layers of thread are wound on the empty tube until the growing diameter of the reel to be wound comes into contact with the pressure roller 10 . The rest of the procedure is identical to the procedure previously described for FIG. 2, and reference is made to the previous description in this regard.

In Fig. 5 another variant of the winding machine according to the invention is shown. In this embodiment, a sliding surface 61 is formed on the roller carrier on the side facing the winding turret. The sliding surface 61 comes into contact with a pin 60 by rotating the turret in the direction of rotation indicated by the arrow. The pin 60 is rotatably attached to the winding spindle at the end of the bearing. However, it could also be attached directly to the turret. In this exemplary embodiment, too, the gap 59 formed between the pressure roller 10 and the empty sleeve 19 will change due to the rotation of the winding turret. In this respect, reference is made to the functional sequence described for FIG. 4.

Reference list

1

thread

2nd

Head thread guide

3rd

Traversing device

4th

wing

5

wing

6

Guideline

7

Traverse drive

8th

Traversing beam

9

axis

10th

Pressure roller

11

Thread guide, positioning device

12th

Roller carrier

13

Swivel bearing

14

Machine frame

15

Coil, full coil

16

Sleeve

17th

Winding spindle

18th

Winding spindle

19th

Empty pod

20th

Winding turret

21

Thread transfer device

22

drive

23

Swivel arm

24th

approach

25th

Thread deflecting rod

26

feather

27

Rest position

28

Deflection position

29

attack

30th

Abutment surface

31

Push-off ring

32

Leading edge

33

Guide groove

34

Thread guide

35

Leading edge

36

Edge zone

37

Thread knife

38

Sliding edge

39

Rotating device

40

Piston cylinder unit

41

Slot

42

pinion

43

Rack

44

Docking position

45

wave

46

Cones

47

Long hole

48

Docking device

49

Thread gun

50

engine

51

Relief device

52

cam

53

attack

54

Abutment surface

55

Limit switch

56

Rotary control device

57

Rotary drive

58

sensor

59

gap

60

Cones

61

Sliding surface

62

Empty pod

63

Sliding surface

Claims (10)

1. Winding machine for winding a continuously running thread ( 1 ) into a bobbin ( 15 ), with a traversing device ( 3 ) and a pressure roller ( 10 ) connected downstream in the thread run, which is rotatably mounted on a movable roller carrier ( 12 ) and partially wrapped around by the thread and
with two eccentric spindles ( 17 , 18 ) rotatably mounted on a winding turret ( 20 ), whereby for changing the thread from a full bobbin ( 15 ) clamped on one of the winding spindles ( 17 ) to an empty tube ( 19 ) clamped on the other winding spindle ( 18 ) Rotation of the winding turret ( 20 ), the winding spindle ( 17 ) with the full bobbin ( 15 ) from a winding area into a changing area and the winding spindle ( 18 ) with the empty tube ( 19 ) from the changing area into the winding area,
wherein the pressure roller abuts the circumference of the bobbin during winding of the bobbin and wherein a gap ( 59 ) is formed between the empty tube ( 19 ) and the pressure roller ( 10 ) for catching the thread and for winding the thread on the empty tube, characterized in that that
the gap (59) of the roller carrier (12) is defined by a recess formed on a stop (53) of the spindle turret stop surface (54) and abutting against the stop surface (54) cam (52) and that the stop surface (54) by rotation of the Turret turret ( 20 ) in contact with the cam ( 52 ) is feasible. 2. Winding machine according to claim 1, characterized in that the stop surface ( 54 ) and the cam ( 52 ) are designed such that the cam ( 52 ) at least during a partial rotation of the turret ( 20 ) on the stop surface ( 54 ) slidably. 3. Winding machine according to claim 1 or 2, characterized in that a sliding surface ( 63 ) on the cam ( 52 ) of the roller carrier ( 12 ) and a pin ( 60 ) on the stop ( 53 ) of the winding turret ( 20 ) are formed. 4. Winding machine according to claim 2 or 3, characterized in that the distance between the stop surface ( 54 ) and the axis of the winding turret ( 20 ) in the angular range of the partial rotation is formed such that with rotation of the winding turret ( 20 ) the gap ( 59 ) between the pressure roller ( 10 ) and the empty sleeve ( 19 ) is substantially constant. 5. Winding machine according to claim 2 or 3, characterized in that the distance between the stop surface ( 54 ) and the axis of the winding turret ( 20 ) in the angular range of the partial rotation is formed such that with rotation of the winding turret ( 20 ) the gap ( 59 ) between the pressure roller ( 10 ) and the empty sleeve ( 19 ) is changeable. 6. Winding machine according to one of claims 1 to 5, characterized in that each winding spindle ( 17 , 18 ) is assigned a stop surface ( 54.1 , 54.2 ) of a stop ( 53.1 , 53.2 ) on the winding turret ( 20 ). 7. Winding machine according to claim 6, characterized in that at least one of the stop surfaces ( 54 ) at the bearing end of one of the winding spindles ( 18 ) on the winding spindle ( 18 ) is formed. 8. Winding machine according to claim 7, characterized in that the stop surface ( 54 ) is formed by a non-rotating push-off ring ( 31 ) which is arranged to be movable axially on the winding spindle for pushing off the full spool. 9. Winding machine according to one of claims 1 to 8 or according to the preamble of claim 1, characterized in that
that the rotation of the winding turret ( 20 ) can be controlled by means of a rotary control device ( 56 ) which controls the rotary drive ( 57 ) of the winding turret ( 20 ) as a function of the position of the pressure roller ( 10 ) when winding a spool ( 15 ), so that the Pressure roller ( 10 ) remains essentially in a desired position,
that the movement of the pressure roller (10) and is formed by a the roller support (12) associated with the sensor (58) detectable by a the roller carrier associated with limit switches (55) can be limited, which sensor (58) and which limit switches (55) with the rotation control means (56 ) is connected that the pressure roller ( 10 ) is held in its target position when catching and winding the thread and
that the gap ( 59 ) for catching and winding the thread is smaller / equal than the stroke of the pressure roller ( 10 ) between the end position and the desired position. 10. A method for operating a winding machine, in particular a winding machine according to one of claims 1 to 8, characterized in that
that the winding turret is rotated after winding a full bobbin on one of the winding spindles to fold the thread into an empty tube on another winding spindle,
that by rotating the winding turret, the pressure roller is moved into an end position in which the pressure roller has no contact with the full bobbin,
that the turret for catching and winding the thread on the empty tube is rotated into a folding area in which a cam rests against a stop surface, the pressure roller being guided out of the end position by rotating the turret,
that the full spool is exchanged for a new empty tube within the folding area and
that when the pressure roller is in contact with the newly wound bobbin, the winding turret for winding the thread from the folding area is rotated in steps or continuously in such a way that the pressure roller remains in peripheral contact with the bobbin.