EP0768258B1 - Discontinuously working winding machine for winding material - Google Patents

Abstract

The equipment for discontinuous winding of strip material (13), and especially an adhesive ribbon strip, has two winding spindles (10,11) which are driven alternately, rotating freely on a swing drum (4). They act alternately as a winding spindle, in one position, and as a reserve spindle in the other position. A cutter (21) severs the strip material when the assembly is at rest. The equipment has a unit (25) to tense the strip material during cutting and laying. The tensing unit has a spring to give the strip stretching action. A control acts on a brake system to act on the spindles.

Description

The invention relates to a discontinuous winder for winding up winding material, in particular adhesive tape, with a drivable winding spindle and an upstream laying device. Under a discontinuous winder is understood one in which the winding machine incoming winding material stopped or for the time of Reel change is recorded in a memory that the winding machine is connected upstream. This means that immediately before the winder in an operating phase of the winder approaches, but stands still in another operating phase. It is understood that this other phase of operation Spool change is used. The winder is used for winding of rinsed goods, in particular adhesive tapes, tear tapes u. Like., It usually depends on the one The winding length to be wound up must be observed precisely and reproducibly.

A discontinuous winder at the beginning described type for the specified purpose known. It has a drivable winding spindle, which in the one operating phase is driven and the other Operating phase is at a standstill. On the winding spindle is known in Manually put an empty sleeve on and clamped. The Rinse material is placed manually on the tube and the begins Operating phase of winding or winding. This winding trip can - Depending on the length of the run - for example a time of half Take an hour. There are usually a large number summarized by winding machines on a winding system, so that the Winding process carried out on all winding machines at the same time becomes. If the single spool on the winding machine and thus the The bobbins on all winding machines are fully wound System and thus the individual winding machines on the one hand and the delivery of the rinsed goods stopped. Starting at the The first winder is severed, for example cut manually with scissors, remove the full bobbin, an empty sleeve is put on and the new start of the ware connected to the empty sleeve. This manual activity will now carried out one after the other on all winding machines in the system, empty pods are plugged in everywhere and the respective start of the ware are hung up. Depending on the number of winding machines in the system needs this process z. B. also about half Hour. During this time, the entire system is standing. the period the winder or system is 50%.

The invention is based on the problems described and aims to use a winder for the described To provide a use case that requires a machine cut of the ware when changing bobbins and a machine Placing the ware on an empty tube allows the Increase term.

According to the invention this is achieved in that two in one Winding position alternately driven spindles via a motor are provided, which are free on a swiveling drum are rotatably mounted and alternately with a work spindle an empty core in the winding position and as a reserve spindle with a sleeve with a full spool in a change position are pivotable that a cutting device for cutting of the ware when the two winding spindles are at a standstill and that the winder is a device for pretensioning of the ware when cutting and putting on the ware in Has standstill of the two winding spindles.

The invention starts out from the idea of two to provide alternately driven winding spindles and these freely to be rotatable on a swivel drum, like this in continuously operating winding machines where the continuous supply of laundry can not be interrupted, is known. This results in the possibility of one of the Swivel the winding spindles as the work spindle into the winding position and shut down the drum. It can then be the winding process take place on this work spindle. after the When the bobbin is fully wound, the drum is rotated around 180 ° so that the other winding spindle is now in the winding position while, conversely, the previously wound work spindle itself is now in the change position in which the full spool removed and a new empty winding tube can be attached can. Of course, this happens during the period during which a new work spindle in the winding position Winding trip takes place. This increases the term of the Dishwasher. If the one winding spindle with a fully wound Swinging the coil into the change position while at the same time a winding spindle with an empty core in the winding position swivels in, both winding spindles stand still, and that Spooling material extends from the circumference of the full spool over the Extent of the empty sleeve in the direction of the laying device and beyond this to a delivery facility. It is one

Cutting device for cutting through the ware at standstill provided, the rinsing section between the circumference the full spool and the circumference of the empty sleeve becomes. Because when the winding spindle is at a standstill in the change position this winding spindle is freely rotatable, care must be taken that the section of the ware between the full bobbin and the empty core of the other winding spindle on a loop formation, sagging of this section is prevented. For this purpose, the winder has a device for straightening of the ware. This stretching device has a multiple function. On the one hand, it holds the section of the ware in question always reproducible due to the stretching effect a route in the same place, so that here the cutting device can be placed so that it is tightened by the held items can be moved through. Streamlined through that held reel, the cutter can function reliably meet. At the same time, however, by tightening of the material to be rinsed, also the application process to the empty tube carried out. If, for example, an adhesive tape is used as the reel to be wound, one of which faces the empty tube Surface is equipped with adhesive, then the Straightening process that the rinsed material with the empty tube in one there is sufficient firm contact so that after cutting off of the ware, the new beginning thus formed already at the extent of the empty tube sticks and the new winding cycle can begin. For the case that a non-sticky reel is wound up the empty sleeve is, for example, correspondingly adhesive to equip or the like

It is important to recognize that when cutting and putting on both winding spindles are stopped, i.e. none of the winding spindles is driven. During this common downtime the winding material is kept taut and at the same time cut off and laid out. All of these processes run automatically from, so that during the subsequent winding trip enough time to Is available to manually on each winding machine of the plant a full bobbin in the change position from the bobbin spindle to remove and attach an empty sleeve and clamp it. The term of the system is therefore compared to the status of the Technology roughly doubled. Stopping the winding spindle in the Winding position takes place when the desired length is wound up has been. For this purpose there is a corresponding measuring device for the barrel length and a corresponding control device for the rotary drive of the winding spindle in the winding position intended.

The device for straightening the items to be washed when the A brake can temporarily avoid both winding spindles of the free rotation of the winding spindle during its pivoting in an angular range and one in the change position when released Brake effective energy store for tightening of the winding material during the cutting and during the Have the items being put on. The brake prevents the winding spindle swivels into the change position free and uncontrolled during this pivoting process twisted so that sagging of the ware is avoided. The energy accumulator acting on the winding spindle is at the end the swiveling action on the winding spindle brought so that the winding material is tightened. there it is particularly about the section of the ware that is from the size of the full spool to the size of the empty tube the other winding spindle. By triggering the Energy storage by releasing the brake, the winding material is included the force caused by the energy accumulator tightened and pressed against the empty sleeve, so that the ware there is created automatically.

The energy accumulator can be designed as a rechargeable spring accumulator be recharged every time the drum rotates becomes. It is understood that the drum only by 180 ° rotates and so far each winding spindle with a rechargeable spring accumulator is provided.

A rotating ring can be freely rotatably mounted on each winding spindle be, the spring accumulator surrounding the winding spindle Torsion spring has one end with the winding spindle and the other end of which is connected to the rotating ring. The spring accumulator is over a jig by twisting the Rotating ring rechargeable. The brake is applied during this charging in active function, d. H. it brakes the winding spindle, so that the bearing of the torsion spring associated with the winding spindle is relatively fixed is held. The force of the brake and the spring accumulator are appropriately coordinated with each other, so that already a certain tightening effect during the swiveling process is exerted on the winding material. This ensures that the ware is always kept taut and for example a ribbon cannot twist.

The tensioning device for the spring accumulator can be turned the rotating ring has a fixed, curved, angular segment have, the edge with the rotary ring during the Swiveling the winding spindle into the change position over a specified angular range is in contact, with the Angular range also extends to the change position. This Segment is arranged in a stationary manner, in such a way Range that it has a specified angular range with the The rotating ring comes into contact and the pivoting movement the drum into a rotation of the rotating ring and thus into one Loading the spring accumulator is implemented or used. With the Turn the rotating ring in relation to the one held by the brake Winding spindle increases the force of the spring accumulator, and there is an increasing penalty effect, with the Brake can slip.

A control device designed in this way can be assigned to the brake be that the braking effect on the winding spindle over a Angular range of the angular range defined by the angle segment with the exception of one end area in the change position is maintained and then the braking effect in the end area canceled to activate the charged lift mechanism becomes. Over a substantial initial range of the angular range, the by extension the segment is defined, the brake is active, so that the spring accumulator can be charged. With reaching of the end point or end range in the change position on the other hand, the brake is released by the winding spindle concerned, so that the spring accumulator in the sense of a rotational movement can affect the winding spindle. It is understood that the direction of rotation is selected so that on the winding spindle a force is exerted in the direction of stretching.

The rotating ring and / or the edge of the angle segment can also be used a friction-increasing coating, in particular coating, be provided. Such a covering can also be transferred from one to the Rotating ring untied roll ring exist. He makes sure that the swiveling movement of the drum through contact of the rotating ring on the segment in a rotational movement for the rotating ring is implemented, through which in turn the spring loaded becomes.

A brake disk can be arranged on each winding spindle. There is a brake pad on the drum for each winding spindle arranged, and the brake pads is a stationary Assigned actuating cam ring, which ensures that in the corresponding angular ranges of the drum the brake on each Spool spindle is actuated or released as it is via the Rotation of the drum is required. The brake pads can Springs with adjustable spring supports can be assigned to the adjust the braking force exerted by the brake carefully can.

Each winding spindle can carry half of a clutch, while the other half of the clutch with one in the winding position arranged motor is connected. With that comes the winder with a single motor. Of course it is possible to provide a separate motor for each winding spindle and either put these motors on the drum or over an intermediate gear the rotary drive on the winding spindles to apply. The respective motor can also function a brake.

The cutting device for cutting the ware in the Standstill can be in the hollow axis of the drum stored and movable parallel to the axes of the winding spindles his. The cutting process is thus reliably achieved.

Fig. 1

eine schematisierte Vorderansicht zum Gesamtaufbau der Spulmaschine,

Fig. 2

die Spulmaschine gemäß Fig. 1 am Ende der Spulreise,

Fig. 3

eine Zwischenstellung der Spulmaschine,

Fig. 4

die Spulmaschine gemäß Fig. 1 während des Schneidvorgangs,

Fig. 5

einen Schnitt durch die Spulspindel in der Wechselposition und

Fig. 6

einen Schnitt gemäß der Linie VI-VI in Fig. 5.

The invention is further explained and described on the basis of a preferred exemplary embodiment. Show it:

Fig. 1

a schematic front view of the overall structure of the winding machine,

Fig. 2

1 at the end of the winding trip,

Fig. 3

an intermediate position of the winding machine,

Fig. 4

1 during the cutting process,

Fig. 5

a section through the winding spindle in the changing position and

Fig. 6

a section along the line VI-VI in Fig. 5th

1 to 4 is a sequence of illustrations of the winding machine shown in front view to the operation of the Clarify device. With a frame 1 (Fig. 5) a housing plate 2 firmly connected to the recording and Storage of essential elements of the device is used. In the Housing plate 2 has a hollow axis 3 arranged in a stationary manner a drum 4 is rotatably or pivotally mounted. For these freely rotatable bearings, ball bearings 5 (Fig. 5) are provided. The drum 4 is thus pivotable about the central axis 6, namely in the direction of arrow 7 (Fig. 3). The drum 4 is provided with a ring gear 8 (FIG. 5), which has a pinion 9 (Fig. 1) cooperates so that the drum over here Motor not shown can be pivoted.

On the drum 4, two winding spindles 10 and 11 are freely rotatable stored. The winding spindle 10 is located in the winding station and can therefore be called a work spindle. The winding spindle 11 is in the change position and can be called a reserve spindle. When swiveling the Drum 4 change by 180 ° in the direction of arrow 7 described functions accordingly. Each winding spindle 10, 11 is rotatably supported on the drum 4 via ball bearings 12. Spulgut 13 is fed to the winder according to arrow 14. The Rinse material 13 runs over stationary rollers 15 and a roller 16 a dancer arm 17, the thread tension regulation in a known manner serves. The winding material 13 passes through a laying device 18, for example a traversing device, and over a roller thread guide 19 on the empty sleeve 20 of the winding spindle 10. The beginning of the ware 13 is on the empty tube 20 created. This can have happened because it is the winding material 13 is an adhesive tape, the one with adhesive coated side of the empty sleeve 20 facing this is glued on. In the case of non-sticky ware 13, the empty one Sleeve 20 equipped accordingly for application.

In the center of the drum 4, ie in the hollow axis 3, there is one Cutting device 21 is provided. On one the hollow axis 3 penetrating axis is a cutting arm 22 with a blade 23 arranged parallel to the central axis 6 and thus parallel to the winding spindles 10 and 11 is movable.

At the beginning of a winding process, the winding spindle 10 is in the 1 and with the reel 13 in Rotational movement offset so that there is a coil on the sleeve 20 24 (Fig. 2) builds. If the intended length of the reel 13 is reached on the sleeve 20, the winding spindle 10 stopped again. Before is on the winding spindle 11 an empty sleeve 20 has been plugged on and clamped there. The winding spindle 11 is also at a standstill. As a Comparison of FIGS. 2 to 4 shows the drum 4 with the two stationary winding spindles 10 and 11 by a total of 180 ° pivoted according to arrow 7, the winding spindle 10 with the full coil 24 is now in the change position, while the Winding spindle 11 as a new work spindle in the winding position comes in. The one located on the winding spindle 11 arrives empty sleeve 20 already in contact with the adhesive side of the Good to be wound 13. The winding machine or each winding spindle 10, 11 is with a device 25 for tightening the winding material 13 at Cut off and put on, their structure and mode of operation is explained in detail with reference to FIGS. 5 and 6. This Device 25 exerts a pretensioning effect on section 26 of the winding material 13, which extends from the circumference of the full coil 24 up to the empty tube 20 of the winding spindle 11 in the direction of the roller thread guide 19 extends. It will now be the Cutting device 21 (at a standstill) of the winding spindles 10 and 11 actuated so that the blade 23 held by the streamlined Section 26 of the ware 13 passes through it and cuts it. Then the one that is now in the winding position Spool spindle 11 rotated, and it finds one new winding trip instead. This all happens automatically or machine. Only the spool change is shown in the 4 apparent position done by hand. The full spool 24 including the sleeve 20 is from the winding spindle 10 solved and a new empty tube 20 on the winding spindle 10th attached. This process is carried out on all winding machines System carried out, namely during the respective winding spindle 11 winds up another coil.

The device 25 for tightening the material to be wound when cutting and applying is explained with reference to FIGS. 5 and 6. Essentials Components of the device 25 are a brake 27 and an energy accumulator 28. The brake 27 has a brake disk 29 on the end of the bobbin spindle 10 facing away from the bobbin 24 placed on it and connected to it in a rotationally fixed manner. With the brake disc 29 works together a brake pad 30, which in Housing of the drum 4 is arranged and thus with the drum 4 rotates and is set against the brake disc 29. A Spring 31, the force of a set screw 32 sensitive is adjustable, acts on the brake pad 30 in the direction of the brake disc 29. On the housing plate 2 is an actuating cam ring 33 fixedly mounted on the circumference of the housing plate 2 is arranged above and of different heights in has protrusions or areas protruding in the axial direction, as is necessary for the function of the brake 27. Fig. 5 shows the released state of the brake 27 in the change position. The brake pad 30 is with play to the brake disc 29 of this lifted off. It is understood that the actuating cam ring 33 also releases the brake 27 in the winding position or holds resolved. The actuating cam ring 33 is designed that he applies the brake pad 30 in an angular range 34 against the brake disc 29, so that the brake 27 in this Angular range 34 fulfills its braking function. The free rotation the winding spindle 10 is about its axis 35 on the drum 4 over the angular range 34 hampered by the brake 27. Out Fig. 6 can be seen that the angular range 34 over a Angle of maybe 80 °, but the end position of the Except winding spindle 10. In the change position, the free one Rotation of the winding spindle 10 about its axis 35 is not hindered.

The energy accumulator 28 can be a spring accumulator with a torsion spring 36 be formed. The torsion spring 36 extends around the Winding spindle 10 around. One end of the torsion spring 36 is over a ring 37 rotatably connected to the winding spindle 10. The the other end of the torsion spring 36 engages in a rotating ring 38, which is freely rotatable on the winding spindle 10. The Rotating ring 38 cannot on the winding spindle 10 here Ball bearing shown in more detail be free-running. The The circumference of the rotating ring 38 can be covered with a covering 39, for example in the form of a rolling ring. For tensioning the lift mechanism 28 serves a clamping device 40, which is next to the rotating ring 38 an essential element is a fixed angle segment 41 has. The angle segment 41 has an edge 42, that works with the rotating ring 38. The angle segment 41 has an angular range 43 which is larger than the angular range 34 is formed and covers it over wide areas. The Angular range 43 in particular also closes the change position on. The angle segment 41 is stationary on the hollow axis 3 clamped or arranged so that when swiveling one Spool spindle 10, 11 in the change position of the rotating ring 38 rolls the edge 42 and thus a total of a rotary movement around the traveling axis 35 of the winding spindle 10 or 11 executes. With this rotational movement, the energy accumulator 28 is charged or the torsion spring 36 tensioned. This is possible because the Brake 27 over the angular range 34, the brake disc 29 and so that the winding spindle 10, 11 brakes. It is understood that the Brake 27 is fine-tuned to the energy accumulator 28, in such a way that the brake applied when loading the Force storage 28 with the application of a tightening effect Slightly slip through section 26 of the material to be washed 13 can. So it is the section 26 of the ware 13 itself, the the counterforce against the charging force of the energy accumulator 28 he brings. This results in the desired tightening effect of the Section 26 of the ware 13. This stretching effect serves not only to keep section 26 straight for the purpose of Cutting through the cutting device 21, but the The tightening effect also produces a pressure on the Section 26 of the winding stock 13 to the empty sleeve 20 of the winding spindle 10 in the winding station (Fig. 1). This will create the process realized by machine. From Fig. 6 it can be seen that the Angular range 43 is larger than the angular range 34 and also extends to the exchange position. Through the Difference between the two areas, an end area 44 is defined, which includes the exchange position and in which the Rotating ring 38 of the clamping device 40 is held, that is is prevented from rotating; is in the end region 44 Brake 27 released, so that now the torsion spring 36 of the energy accumulator 28 is able to move the respective winding spindle 10 or 11 to rotate in the direction of rotation about the axis 35. It will now the final stretching effect on section 26 of the ware 13 reached as it is for cutting and applying the winding material 13th to the new empty sleeve 20 is required.

Although the device 25 for straightening the winding material 13 in Connection with the winding spindle 10 was explained, it understands yourself that the corresponding elements on the winding spindle 11th are provided. The same applies to this. Only the Actuating cam ring 33 is only provided and extends over the circumference of the drum 4.

With each winding spindle 10 or 11, one half 45 is one Permanent magnet synchronous clutch non-rotatably connected. The other Half of this clutch is on the not shown Winding motor. It is sufficient for this winding machine only one winding motor provide the axis with the axis of the respective winding spindle in the winding position.

REFERENCE SIGN LIST

1 -

frame

2 -

Housing plate

3 -

axis

4 -

drum

5 -

ball-bearing

6 -

Central axis

7 -

arrow

8th -

Sprocket

9 -

pinion

10 -

Winding spindle

21 -

Cutting device

22 -

Cutting arm

23 -

blade

24 -

Kitchen sink

25 -

Facility

26 -

section

27 -

brake

28 -

Lift mechanism

29 -

Brake disc

30 -

Brake pad

41 -

Angle segment

42 -

edge

43 -

Angular range

44 -

End area

45 -

half

11 -

Winding spindle

12 -

ball-bearing

13 -

Rewash

14 -

arrow

15 -

role

16 -

role

17 -

Dancer arm

18 -

Laying device

19 -

Roller thread guide

20 -

Sleeve

31 -

feather

32 -

Set screw

33 -

Actuation cam ring

34 -

Angular range

35 -

axis

36 -

Torsion spring

37 -

ring

38 -

Rotating ring

39 -

covering

40 -

Jig

Claims (10)

1. A discontinuously operating winding machine for winding on material (13) to be wound, in particular adhesive strip, comprising a drivable winding spindle (10) and a laying device (18) arranged upstream thereof, characterised in that there are provided two alternately drivable winding spindles (10, 11) which are freely rotatably mounted on a pivotable drum (4) and which are pivotable alternately as a working spindle into a winding position and as a reserve spindle into a change position, that there is provided a cutting device (21) for severing the material (13) to be wound in the stopped condition and that the winding machine has a device (25) for tightening the material (13) to be wound in the stopped condition of the two winding spindles (10, 11), when cutting it and attaching it to a tube.
2. A winding machine according to claim 1 characterised in that the device (25) for tightening the material to be wound when cutting it and attaching it to a tube comprises a brake (27) for temporarily preventing free rotary movement of the winding spindle (10, 11) which pivots into an angular region (34), and a force storage means (28) for tightening the material (13) to be wound during the operation of severing the material and during the operation of attaching the material, wherein the force storage means fulfils its function in the change position with the brake (27) being released.
3. A winding machine according to claim 2 characterised in that the force storage means (28) is in the form of a spring storage means which can be loaded up.
4. A winding machine according to claim 3 characterised in that a respective rotary ring (38) is freely rotatably mounted on each winding spindle (10, 11), that the spring storage means has a torsion spring (36) which surrounds the winding spindle (10, 11) and of which one end is connected to the winding spindle (10, 11) and the other end is connected to the rotary ring (38), and that the spring storage means can be loaded up by way of a tensioning device (40) by rotation of the rotary ring (38).
5. A winding machine according to claim 4 characterised in that the tensioning device (40) for the spring storage means for tensioning same by rotation of the rotary ring (38) has a stationarily arranged bow-like angular segment (41) whose edge (42) is in contact with the rotary ring (38) over a fixed angular region (43) during the pivotal movement of the winding spindle (10, 11) into the change position, the angular region (43) also extending to the change position.
6. A winding machine according to claim 5 characterised in that associated with the brake (27) is a control device (33) being designed and arranged to effect the braking action on the winding spindle (10, 11) to be maintained over an angular region (34) of the angular region (43) defined by the angular segment (41) with the exception of an end region (44) in the change position, while in the following end region (44) the braking action is released to activate the loaded up force storage means (28).
7. A winding machine according to claim 5 characterised in that the rotary ring (38) and/or the edge (42) of the segment (41) is provided with a friction-increasing layer (39), in particular a lining.
8. A winding machine according to one of claims 1 to 7 characterised in that a brake disc (29) is arranged on each winding spindle (10, 11), that a respective brake pad (30) is arranged on the drum (4) for each winding spindle, and that a stationarily arranged actuating cam ring (33) is associated with the brake pads (30).
9. A winding machine according to one of claims 1 to 8 characterised in that each winding spindle (10, 11) carries one half (45) of a coupling means while the other half of the coupling means is connected to a motor arranged in the winding position.
10. A winding machine according to one of claims 1 to 9 characterised in that the cutting device (21) for severing the material (13) in the stopped condition is mounted in the hollow shaft (3) of the drum (4) and is displaceable parallel to the axes of the winding spindles (10. 11).

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