EP0888243B1 - Device for sliding tubes or bobbins on a mandrel - Google Patents

Abstract

To remove bobbins (7) from a bobbin mandrel (4) of a winding device (1), the invention suggests a sliding device, comprising a piston which, driven by a pressure medium, moves back and forth in a cylinder (8). The device is characterized in that the piston is a magnetic piston, whose polarity is opposite that of at least one magnet connected to a sliding unit (9), and in that said sliding unit (9) can slide substantially lenghtways along the cylinder (8).

Description

The object of the invention relates to a push-off device for pushing sleeves or spools on a mandrel with the features the preamble of claim 1.

Fibers, especially man-made fibers, are made by means of so-called winding devices wound. For this purpose, the winding device has at least one Spindle on which at least one sleeve is arranged on which the Fiber is wound up. After the winding process, the spool of hand over the mandrel to a bobbin transport device. Such coil transport devices are also called doffer. The coil transport device can be moved along the front of the winding device. The coil transport device points at the height at which the mandrel joins the full bobbin formed on it, a mandrel, which in this position is aligned with the winding spindle. Which is on the mandrel The full bobbin is removed from the mandrel by means of a push-off device pushed onto the mandrel of the bobbin transport device. On one The mandrel of a winding device can wind several coils at the same time become. During the deportation process, everyone will be on the mandrel located coils on the mandrel by means of the push-off device the bobbin transport device is pushed off. For pushing the full The push-off device has windings from a mandrel of a winding device a sliding unit, which is substantially parallel to the winding spindle is movable. The slide unit engages on the machine side End face of the winding device, the winding tube, on which a fiber is wound and forms a coil, behind and pushes it off the mandrel on the arbor. Correspondingly, empty sleeves can also be used the ram are pushed. Such a push-off device for Spooling devices is known for example from FR-A-2 121 286, EP 0 374 536 B1 and the DE 24 38 463 C2 known.

The push-off device has one for actuating the pushing unit Cylinder-piston unit on. The piston of the cylinder-piston unit is included coupled to the sliding unit. The movement of the piston is based on this transfer the sliding unit. In the known push-off device Piston connected to the slide unit via a piston rod. By a Appropriate loading of the cylinder-piston unit with a pressure medium movement of the sliding unit is achieved. The travel path the sliding unit corresponds at least to the length of the mandrel, so that it is ensured that the spool located on a mandrel is secure and reliably on the mandrel of a coil transport device is pushed. Corresponds to the known push-off devices the length of the cylinder in which the piston is displaced essentially the length of the mandrel. In view of the fact that the sliding unit is essentially moved parallel to the mandrel, the push-off device a not insignificant contribution to the length of the winding device. This results in a corresponding space requirement for the winding device necessary.

Proceeding from this, the present invention is based on the object to further develop the known push-off device so that it has a compact, has space-saving structure. Another object of the invention is to specify a winding device with a push-off device, the Spooling device has a compact structure.

This goal is achieved by a deportation device with the characteristics of Claim 1 or achieved with the features of claim 13. advantageous Developments of the push-off device and the winding device are the subject of the corresponding subclaims.

The push-off device according to the invention for pushing sleeves or Winding on a mandrel, in particular a mandrel of a winding device, directs one back and forth in a cylinder by applying one Pressure medium movable piston. The piston is with a slide unit coupled, which makes a movement corresponding to the piston. The Push-off device is characterized in that the piston is a magnetic piston whose polarity is opposite to that of at least one with the Slide unit is connected magnet. The sliding unit is essentially slidable along the cylinder. In the training according to the invention the pusher is on a piston rod, which after the State of the art connects the piston to the sliding unit, waived. This results in a compact structure of the push-off device, since the length of the push-off device is essentially a predetermined one Displacement corresponds.

Another advantage of the push-off device according to the invention is therein see that by the magnetic coupling of the magnetic piston with the Sliding unit possible sealing problems of the cylinder-piston unit be minimized.

According to an advantageous embodiment of the push-off unit, it is proposed that that the sliding unit is slidable on the cylinder. This Training has the advantage that an additional guide device the sliding unit can be dispensed with.

The provision of a guide device along which the sliding unit is performed may be useful if the cylinder in which the piston is a standard component with a relatively large surface roughness is. The surface roughness can lead to high friction losses, whereby the push-off device can be operated at higher pressures would. Providing a guide device can then also be expedient be when the outer circumference of the cylinder is relatively large. The cylinder does not necessarily have to have a circular outer contour. Polygonal too Contours are possible. However, the cylinder with a is useful form circular cross section. The cylinder can be replaced by a Tube are formed.

The sliding unit is preferably guided in a sliding manner. A smooth tour has the advantage that the travel resistance and wear of the Sliding unit is minimized.

According to a further advantageous development of the push-off unit suggested that the sliding unit against at least one stop is movable. The stop is preferably at least in one end region arranged of the cylinder or the guide device. hereby it is ensured that the sliding unit does not have the cylinder on which the Sliding unit is guided or can leave the guide device. On Another advantage of this embodiment can be seen in that by positionable stops a push-off device also for different Traverse paths of the sliding unit can be adjusted.

The magnetic coupling between the slide unit and the piston can be done by means of electromagnets or by means of permanent magnets. An embodiment of the push-off device is preferred in which the magnetic coupling of the magnetic piston with the slide unit Permanent magnets is reached. This configuration has the advantage that electrical lines and solenoids can be dispensed with. It will therefore suggested that the magnetic piston at least one disk-shaped Has permanent magnets. The sliding unit preferably has at least one annular permanent magnet. The permanent magnets are preferably carried out with axially aligned magnetization. The has the advantage that with a circular piston an anti-rotation device can be omitted. A radially oriented magnetization of the permanent magnets is advantageous for pistons that are not rotationally symmetrical applied.

If several magnets are used to design the magnetic piston, it is proposed to align the magnetic flux that between two adjacent magnets each have a pole plate. A corresponding The sliding unit can also be configured. In order to the magnetic power transmission can be increased. Such Design of the push-off device is therefore preferably used to to move several coils from one spool.

According to a further advantageous embodiment of the push-off device it is proposed that the sliding unit has a carrier with which at least a magnet of the slide unit is connected, and a fork-shaped Slider, which is connected to the carrier. Preferably at least the slide of the sliding unit is pivotable about an axis educated. Here, the axis through the cylinder itself or through an axis running parallel to the cylinder are formed. Such Design of a push-off device is particularly for winding device suitable with a plurality of mandrels, as described, for example, in EP 0 374 536 is described. The fork-shaped slide can be pivoted so that this can be brought into a gripping position in which a mandrel engages is brought with the fork-shaped slide and the slide through the Pivoting movement of the turret entrained by the mandrel until the mandrel has reached a position in which a bobbin changing process takes place and empty tubes are pushed onto the spool. With further rotation of the turret, the slide is then in a Deflected position pivoted so that the mandrel only by rotating the Revolver comes out of engagement with the slide.

The push-off device preferably has a reset unit the at least the slide from a push-off position into a gripping position is feasible. The reset unit is preferably open by at least one at least the spring acting slider formed. Such an arrangement the reset unit is structurally simple and reliable. It is suggested, that the spring is connected to the slide and the carrier Tension spring is. If the slide is disengaged from a mandrel, in particular a winding mandrel or a winding tube after the pushing-off process disengaged, the slide is tensioned by the Tension spring pulled back into the gripping position.

According to a further advantageous embodiment of the push-off device it is proposed that the reset unit be a stationary compression spring Has. This configuration of the push-off device is in particular then useful when used in conjunction with a winding device is, in which the fork-shaped slide by pivoting the Winding turret is disengaged from the mandrel. Preferably the reset unit has at least one displaceable against a spring force Stop element on the at least one at such an angle has to the longitudinal direction of the cylinder surface, so that at least the slide can be brought from a deflected position into a gripping position.

According to a further inventive idea, a winding device with at least one rotatable mandrel and a push-off device propose according to one of claims 1 to 12. This will be a compact structure of the winding device achieved.

The winding device is preferably designed such that it has a plurality of rotatable ones Spindles with spacing from each other. Such winding devices are particularly suitable for the continuous winding of an incoming thread suitable. The mandrels are movably arranged on a guideway and are alternately in a winding area and in a changing area emotional. At least one is wound up in the winding area Thread to a bobbin. The spool change takes place in the changing area, i.e. the full spool is pushed off the spool and one of the Number of winding stations corresponding number of empty tubes is on the The spool is pushed on. To make pushing off the full spool too can, a recess of the slide protrudes when the slide is in position the gripping position in the guideway of the mandrel so that the mandrel, which is moved into the changing area, automatically in Engages with the slide. This version of the winding device has the advantage that the spool change is carried out automatically can be. The control of the pusher can be done via the Carry out central machine control.

In a particularly advantageous development of the winding device Spindle mandrels arranged on a rotatable turret disc. Here you can the slide from the rotary movement of the driven turret swivel the gripping position into the deflected position.

To ensure a safe interaction between one of the mandrels and the Ensuring the push-off device is the design variant of Advantage in which the sliding unit is in the gripping position with the slide or cannot be activated in the deflected position in a starting position located.

The winding device is preferably designed such that at least one Mandrel has a sliding bushing which can be brought into engagement with the slide, which can be brought to bear against at least one bobbin of a bobbin is. The sliding bush pushes the winding tube off the mandrel.

The sliding bushing is expediently at least in the gripping position of the Slider non-rotatably arranged on the mandrel.

Fig. 1

schematisch eine Spulvorrichtung und eine Abschiebeeinrichtung,

Fig. 2

schematisch eine Schiebeeinheit und einen Magnetkolben im Schnitt,

Fig. 3

eine Variante der Schiebeeinheit,

Fig. 4

eine Spulvorrichtung mit einer Abschiebeeinrichtung in einer Greifstellung,

Fig. 5

die Spulvorrichtung nach Fig. 4 mit einer Abschiebeeinrichtung in einer Abschiebestellung,

Fig. 6

ein weiteres Ausführungsbeispiel einer Spulvorrichtung und einer Abschiebeeinrichtung,

Fig. 7, 8 und 9

unterschiedliche Phasen vor, während und nach einem Abschiebevorgang,

Fig. 10 und 11

eine Rückstelleinheit mit einer Schiebeeinheit.

Further advantages and details of the push-off device according to the invention and the winding device are explained on the basis of the exemplary embodiments shown in the drawing. Show it:

Fig. 1

schematically a winding device and a push-off device,

Fig. 2

schematically a slide unit and a magnetic piston in section,

Fig. 3

a variant of the sliding unit,

Fig. 4

a winding device with a push-off device in a gripping position,

Fig. 5

4 with a push-off device in a push-off position,

Fig. 6

another embodiment of a winding device and a push-off device,

7, 8 and 9

different phases before, during and after a deportation process,

10 and 11

a reset unit with a sliding unit.

1 shows a winding device 1. The winding device 1 has a machine frame 2 on. Furthermore, the winding device 1 has two at a distance Spindles 3, 4 arranged in relation to one another. Spindles 3, 4 are movable arranged cantilevered on the machine frame 2. Here, the movement the mandrel through, for example, a turret disk, a slide or a chain drive. The mandrels are above not shown Rotary drives can be driven.

The mandrels are alternated into one winding area and one Changing area moves, with one thread in the winding area Coil is wound and the fully wound in the changing area Coil is replaced with a new empty tube. In Fig. 1 is the mandrel 4 shown in the changing area. The winding area is not shown.

A total of four sleeves 6 are shown schematically on the mandrel 3 stretched, on which one thread is wound per winding station can. 7 each denotes an already fully wound coil. The Coils 7 are arranged on the mandrel 4.

A push-off device is used to push the spools 7 off the mandrel 4 intended. The pusher has an essentially tubular shape Cylinder 8. The cylinder 8 extends substantially parallel to the mandrel 4.

A pressure medium can be applied to the cylinder 8. This is a Pressure medium connection 12 is provided, from which via a line 13, a Control valve 14 and via a line 17, the pressure medium in the cylinder 8 can be introduced. The control valve 14 is at one end of the cylinder 8 arranged. The line 17 is via a connection 18 to the opposite End of the cylinder 8 connected. The cylinder 8 is on both sides the pressure medium, which is, for example, air or oil can be acted upon.

A magnetic piston, the polarity of which is arranged inside the cylinder 8 opposite to the at least one connected to the sliding unit Magnet. The sliding unit 9 is essentially along the cylinder 8 movable.

In Fig. 1, this sliding unit 9 is shown in its gripping position. The slide 11 lies on the sleeve adjacent to the machine frame 2 6 of the coil 7. If the cylinder 8 via the control valve 14 with a Pressurized medium, then the sliding unit 11 is moved through the magnetic coupling with the magnetic piston in the direction of free end of the mandrel 4. During this shifting process the coils 7 from the mandrel 4 to a mandrel, not shown pushed a coil transport device. Dashed is in the Fig. 1 shows the end position of the sliding unit 9, in which the coils 7 from the Spuldorn 4 have been deported. The sliding unit 9 arrives here to the stop 19. For a return movement of the sliding unit 9 is controlled by the control circuit 15, the control valve 14. The cylinder 8 is essentially depressurized and a pressure medium over the Line 17 and line connection 18 are pressurized with a pressure medium. The sliding unit 9 is moved to the gripping position, whereby Determination of the gripping position a stop 20 is provided, which the Machine frame 2 is arranged adjacent.

2 shows the sliding unit 9, the cylinder 8 and a magnetic piston 21 in average. The cylinder 8 has a channel 33. The channel 33 has a substantially circular cross section. In channel 33 a magnetic piston 21 is slidably arranged. The magnetic piston 21 comprises three disc-shaped magnets in the illustrated embodiment 22. The magnets 22 are permanent magnets. Between Two adjacent magnets 22 each have a pole plate 23 arranged. There is a plate on each end of the magnetic piston 25 arranged. Extends in the axial direction of the magnetic piston 21 Connecting element 24, which the magnets 22 and the pole plates 23rd braced by the plates 25 into a package. The perimeter of one each plate 25 also serves to seal the piston 21 against the Shell surface of the channel 33, so that when the Channel 33 from one end of the cylinder 8 through the pressure medium one Pressure force is exerted on the magnetic piston 21, so that the magnetic piston in channel 33 is shifted.

The sliding unit 9 comprises a carrier 10 which is substantially ring-shaped is trained. It is sliding on the outer jacket 34 of the cylinder 8 led. With the carrier 10, an arm 32 is connected, as it from the Figure 4 can be seen. However, it is also possible to slide 11 directly to connect to the carrier 10, as shown in Fig. 7.

For the sliding guidance of the carrier 10 on the outer jacket 34, the Carrier 10 has a through opening 31, the cross section of which essentially corresponds to the outer cross section of the cylinder 8. In the carrier 10 is a receptacle 29 formed in which a holder 26 with annular Magnet 27 is arranged. Corresponds in the illustrated embodiment the number of magnets 27 the number of magnets 22 of the magnetic piston 21. Between each magnet 27 there is a corresponding one annular pole plate 28 arranged. The magnets 27 and the pole plates 28 are dimensioned so that the magnets 27 relative to the magnets 22 of the Magnetic piston lie. The polarity of the magnets 27 is opposite to that Polarity of the magnets 22 of the magnetic piston 21. Here, the magnets have an axially aligned magnetization, so that a radially rotating Reverse polarity to apply the magnetic holding forces between the magnetic piston 21 and the carrier 10 abuts. The magnets can, however, also have a radially oriented magnetization, such as shown in Fig. 2.

The holder 26 is through a socket 30, which is arranged in the receptacle 29 is defined.

In Fig. 1 and Fig. 2, the slide 11 is substantially flat educated. Alternatively, the slide 11 can also be cranked, as can be seen from FIG. 3. The offset of the slide 11 is molded in the push-off direction, so that when pushing off the coils 7 and pushing the coils 7 onto a mandrel of a coil transport device the coils 7 can be pushed on safely and reliably.

The mode of operation and Details of the pusher in connection with a winding device are explained. The winding device, which is shown schematically has a traversing device 36 and one in the running direction of the thread 35 of the traversing device 36 downstream contact roller 37, which during a winding process (winding trip) is applied to the coil 7. The coil 7 is formed on a sleeve 6. The sleeve 6 is on a mandrel 4th clamped. The mandrel 4 is diametrically opposite together with one arranged mandrel 3 cantilevered on a rotatable turret 5 stored. When the winding cycle has ended, the turret disk is activated 5 pivoted in the direction of the arrow about the turret axis 38. The way of working such a winding device is for example in EP 0 374 536 B1 described.

The sliding unit 9 is in its gripping position. The slide 11 instructs at its free end a recess 39 which engages with the Spuldorn 4 can be brought. For this purpose, the recess 39 projects into the guideway of the mandrel 4 into it. The edge of the recess 39 is for a pushing process on a sleeve 6 of the full spool 7, whereby an impairment of the full coil 7 by the slider 11 during a deportation process is avoided. Fig. 4 also shows that the slider 11 is positioned against the direction of rotation of the turret disk 5. The Slider 11 is substantially parallel to the longitudinal axis of the spool 4 or 3 extending axis 41 pivotable. The axis 41 is on an arm 32 is formed, which is connected to the carrier 10. The Swivel angle of the slide 11 is by a not shown Stop on the arm 32 and by a return unit 40, which is in the form of a Tension spring 48 is formed, limited in the direction of the gripping position.

When the winding cycle of the coil 7 has ended, the turret disk 5 becomes so far twisted that the mandrel 3 with a sleeve 6 in the winding area brought. The caught thread 35 is used to abut the empty one brought the mandrel 3 rotating sleeve 6, so that a winding process of thread 35 takes place.

During the pivoting movement of the turret 5, the Spindle 4 into the recess 39. The slider 11 is through the spool 4 taken along and pivoted about the axis 41 until the slide 11 has reached the position shown in FIG. 5. Is in this position the tension spring 48 of the return unit 40 is tensioned. By applying the The magnetic piston and the slide unit become cylinders with a pressure medium set in motion so that the coil 7 by means of the slide 11th pushed off the mandrel 4 and on a receiving mandrel, not one shown bobbin transport device is pushed.

The turret disk 5 can continue to rotate during the pushing-off process, so that between the contact roller 37 and the one to be rewound Coil 7 on mandrel 3 always has a predetermined contact pressure. This rotation disengages the mandrel 4 from the slide 11 brought. The slider 11 is by the tensioned spring 48 Reset device 40 withdrawn into the gripping position shown in FIG. 4. The sliding unit 9 can correspond to the gripping position Position on the cylinder 8 can be moved, as already above was explained.

In Fig. 6, a winding device 1 is shown in its basic Structure of the winding device shown in FIG. 1 corresponds, the Spindles in the winding device according to FIG. 6 on a rotatable turret disk are arranged. Same parts of the winding device according to FIG. 1 and 6 are provided with the same reference numerals. To avoid Repetitions are therefore referred to the above explanations.

The winding device 1 shown in FIG. 6 differs from that in FIG 1 winding device in that each winding mandrel 3, 4th has a sliding bush 42. The sliding bush 42 is in the area the machine frame 2 so arranged on the respective mandrel 3, 4 that this is non-rotatable and slidable on the mandrel. With the sliding bush 42, the slide 11 of the push-off device can be brought into engagement. 6, the slider 11 engages the bush 42 of the mandrel 4. The slide 11 is connected to the carrier 10 of the sliding unit 9. The structure of the sliding unit 9, which is displaceable on the cylinder 8 is arranged corresponds to the structure shown in Figure 2, wherein the Slider 11 is arranged directly on the carrier 10.

7 to 8 show individual phases of a push-off operation in a 6. The thread 35 runs into the traversing device 36 a winding point and after deflection at the Contact roller placed on a spool to be wound. 7 is the Slider 11 against the direction of rotation of the turret 9 in one Gripping position shown. By turning the turret 5 comes Mandrel 4 with the coils 7 in engagement with the recess 39 of the By a further rotation of the turret disk 5 around the turret axis 38, the slide 11 is shown in FIG Position. The slider 11 engages the sliding bush 42, as shown in FIG. 6. By moving the displacement unit 9 along the cylinder 8, the coils 7 from the mandrel 4th deported. During this process, the mandrel 3 got into the Winding area of the winding device. A coil 7 'was already on the Spuldorn 3. During the entire push-off process, the Slider 11 engages with the sliding bush 42. By turning further the turret 5, the slider 11 is made of it essentially vertical position in the direction of rotation of the turret 5 deflected, like this 9 can be seen.

By turning the turret disk 5 further about the turret axis 38 the sliding sleeve 42 is disengaged from the recess 39 of the Slider 11 brought.

Around the slide 11 from the deflection position shown in FIG Bringing the gripping position shown in Fig. 7 is a reset unit 40 provided. The reset unit 40 has a stationary arrangement Compression spring 43 on. One end of the compression spring 43 is not shown fasteners fixed to a bracket 45. To the a stop element 44 is arranged at the free end of the compression spring 43.

The mode of operation and the details of those shown in Figures 7 to 9 Reset unit 40 are explained with reference to Figures 10 and 11.

The stop element 44 has a surface 46 along which a section 47 of the slide slides. The surface 46 is at such an angle to Direction of displacement R of the slider 11 on the cylinder 8 inclined that the Slider 11 from the deflected position, as shown in FIG. 9, in 7 can be brought into the gripping position. The area 46 is covered by the Compression spring 43, which is connected to the bracket 45, in the travel range brought the slide 11. Fig. 10 shows the position of the reset unit 40, in which the compression spring 43 relaxes and the stop element 44 engages with the surface 46 in the travel range of the slide 11. slides the slide 11 on the surface 46, on the one hand the compression spring 43 compressed by the slider 11 and on the other hand the slider 11 by the displaceable stop element 44 into the gripping position according to FIG. 7 pivoted.

LIST OF REFERENCE NUMBERS

1

spooling device

2

machine frame

3, 4

winding mandrel

5

turret disc

6

shell

7, 7 '

Kitchen sink

8th

cylinder

9

shifter

10

carrier

11

pusher

12

Pressure medium connection

13

management

14

control valve

15

control circuit

16

control line

17

management

18

Connection

19, 20

attack

21

magnetic piston

22

magnet

23

pole plate

24

connecting element

25

plate

26

holder

27

magnet

28

pole plate

29

admission

30

Rifle

31

Through opening

32

poor

33

channel

34

outer sheath

35

thread

36

Traversing device

37

contact roller

38

turret axis

39

recess

40

Safe return

41

swivel axis

42

slide bush

43

compression spring

44

stop element

45

bracket

46

area

47

section

48

mainspring

Claims (18)

1. Push device for pushing tubes (6) or packages (7, 7') onto a mandrel (3, 4), in particular a winding mandrel (3, 4) of a take up apparatus (1), the device comprising a cylinder (8) with a piston (21) arranged for reciprocal movement therein when exposed to a pressure medium, and a push unit (9) coupled with the piston (21), characterized in that the piston is a magnetic piston (21) whose polarity is opposite to at least one of the magnets (27) connected to the push unit (9), and that the push unit (9) is displaceable substantially along the cylinder (8).
2. Push device according to claim 1, characterized in that the push unit (9) is displaceable on the cylinder (8).
3. Push device according to claim 1 or 2, characterized in that the push unit (9) is guided along a guide mechanism extending substantially parallel to the cylinder (8).
4. Push device according to one of claims 1 to 3, characterized in that the push unit (9) is displaceable at least in one end region of the cylinder (8) against a stop (19, 20).
5. Push device according to one of claims 1 to 4, characterized in that the magnetic piston (21) comprises at least one disk shaped magnet (22) which is associated with an annular magnet (27) of the push unit (9).
6. Push unit according to one of claims 1 to 5, characterized in that the magnetic piston (21) and the push unit (9) each comprises a plurality of successively arranged magnets (22, 27), and that a pole plate (23, 28) is arranged between two axially adjacent magnets.
7. Push unit according to claim 6, characterized in that the magnets (22, 27) are permanent magnets having preferably an axially aligned magnetisation.
8. Push unit according to one of claims 1 to 7, characterized in that the push unit (9) comprises a support (10) connected to at least one magnet (27) of the push unit (9) and a bifurcate pusher (11) that is connected to the support (10).
9. Push device as in claim 8, characterized in that the pusher (11) is pivotable crosswise to the direction of the push unit (9) about an axis, which is formed by the cylinder (8) or an axis (41) extending parallel to the cylinder (8).
10. Push device according to claim 9, characterized by a resetting unit (40) which permits movement of the pusher (11) from a deflected position to a gripping position.
11. Push device according to claim 10, characterized in that the resetting device (40) comprises a spring (48) acting at least upon the pusher (11).
12. Push device according to claim 11, characterized in that the resetting unit (40) comprises a stop element (44) displaceable against the action of a spring, the stop element (44) having a surface (46) extending at such an angle relative the axial direction of the cylinder (8) and engaging in the path of the pusher, so that the pusher (11) can be moved from a deflected position to a gripping position.
13. Take up apparatus with a rotatable winding mandrel (3, 4) and a push device according to one of claims 1 to 12.
14. Take up apparatus according to claim 13, characterized in that a plurality of rotatable winding mandrels (3, 4) are arranged in spaced relationship, that the winding mandrels (3, 4) are movable along a guide path, and that a cutout (39) of the pusher (11) extends into the guide path of the winding mandrels, when the pusher (11) is in its gripping position, so that one of the winding mandrels is engaged by the pusher (11).
15. Take up apparatus according to claim 14, characterized in that the winding mandrels (3, 4) are arranged on a rotatable turret plate, and that the pusher (11) is pivotable by engagement of one of the winding mandrels (3, 4) from its gripping position to its deflected position by rotation of the turret plate.
16. Take up apparatus according to claim 15, characterized in that the pusher unit (9) is together with a pusher (11) in a gripping position or in the deflected position non-actuatable in a starting position.
17. Take up apparatus according to one of claims 13 to 15, characterized in that the winding mandrel or mandrels comprise(s) for engagement with the pusher (11) a push sleeve (42) which is arranged on the winding mandrel for axial displacement thereon.
18. Take up apparatus according to claim 17, characterized in that the push sleeve (42) is arranged non-rotatable in the gripping position.

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