EP1083139B1 - Device for winding rolls and method for winding - Google Patents

Description

The invention relates to a roll winding device a support roller that can be placed on a winding roller arrangement, in the axial direction into individual sections is divided, which is a common rotary drive exhibit. The invention further relates to a winding method for winding up cut from a material web Partial webs for material web rolls, in which a driven platen roller with a predetermined There is pressure on the web rolls.

Such a roll winding device is out EP 0 502 522 A1 is known. The individual sections of the Support roller are driven by a drive shaft, connected to a drive via a coupling stands. The drive shaft points for each section a gear transmission with a gear on that is permanently connected to the drive shaft and with an output gear is engaged, which is permanent is connected to the section of the platen roller.

The invention is based on a paper web described as an example of a material web. she is but applicable to all webs of material that are similar Were handled, especially wound up have to.

Paper webs are usually made in widths, which are larger than they will be later from a processor can be used. For example, paper webs made with a width of 8 or 10 m, while a print shop widths range from 0.5 to 3.8 m required. For this reason, one of the last manufacturing steps the paper web in partial webs cut with the desired width. The partial lanes are then wound up into material web rolls, being the winding of partial webs that are made of the same Material web are cut, done simultaneously.

When winding up, you want a course of the winding hardness in the material web rolls reach from the inside decreases towards the outside. To this end, it is known that Rolls of material at the beginning of the winding process load on a support roller, i.e. in a changing bed or to press against a contact roller. With a single bed the support roller also has the task which at the beginning of the winding process is still relatively light Prevent web rolls from coming out of the changing bed come out.

A support roller, which is divided into individual sections in the axial direction is divided, is known from DE 41 34 648 A1. However, this platen roller is not due to the Winding rollers, but on a central contact roller. The support roller serves to counter the material web to press the driven contact roller to interrupt a web train to effect.

The invention has for its object the winding process to be able to control better.

This task is done with a roll winding device of the type mentioned in that the sections in the axial direction by a detachable coupling device can be coupled together.

With such a platen roller it is now possible an additional drive torque at the start of the winding process into the winding rolls that are forming, the design effort remains small. You don't need one for each section own drive. Rather, a common drive is sufficient for all sections because the sections in Can be coupled in the axial direction. The rotary drive drives sections together. This has about it also the advantage that all material web rolls with the same peripheral speed are driven, so that the winding process is relative for all winding rolls done evenly. However, it can be due of cross profile deviations in papermaking in usually do not avoid that with larger diameters result in certain differences in diameter. If such differences in diameter can be seen Rollers are usually so big that the rotary drive the support roller is usually no longer necessary is. You can release the clutch and the drive switch off. The platen roller then only works over the contact pressure on the respective winding roll.

It is advantageous if the sections on one Carrier are arranged, the relative to the winding roller assembly is movable, with each section in the disengaged Condition individually movable with respect to the carrier and has a positioning drive. With this On the one hand, design achieves that the entire Support roller first changes the diameter of the winding rollers can follow. With increasing diameter of the The carrier is moved, for example lifted, by winding rolls. Then if the predetermined diameter of the Winding rolls is reached, from which the additional drive power the support roller is no longer required then each individual section of the platen roller individually in relation to the respective winding roll be moved so that the section with the desired Holding force held on the circumference of the winding roll can be. Here one takes advantage of the fact that Differences in diameter between individual winding rolls are generally relatively small. Accordingly, can one even when the sections face each other be moved by the carrier, still move the carrier as a whole, to increase the diameter of the winding rolls overall to be able to follow.

The support roller is preferably above a winding bed arranged by at least two support rollers is formed. In connection with such Double carrier roller winder shows the special advantage the divided but drivable platen roller. In such a double carrier roller winder Wrapping rolls practically wound forehead to forehead. Between the individual winding rolls remain at most small gaps. With the divided support roller the desired drive torque can still be achieved introduce into the individual winding rolls and at the same time increase the contact pressure while larger The individual winding rolls also have different diameters Roll diameters with the required Winding pressure can be applied.

The rotary drive and the coupling device are preferred connected to a control device, to a diameter of the winding roll assembly responding. The control device can with the help of a Sensor, for example, the current diameter of the Determine winding rolls and then depending on that determined diameter loosen the coupling and the drive turn off. The diameter can be determined here done in a variety of ways. For example you can actually measure the diameter. you can also change the number of revolutions of the winding rolls determine and calculate the diameter from it.

Preferably forms at least part of the rotary drive the coupling device. So that with the Rotary drive combines several functions. He not only serves to drive the platen roller, but also the same for all sections Transmit torque.

It is particularly preferred that the rotary drive has a driven friction roller on all Sections abut. If the friction roller is rotated, then all sections are alike turned. Due to the frictional connection with the friction roller but they are also against twisting against each other secured.

The sections are preferably mounted on pivot levers, on which the positioning drive acts. So that leaves a relatively simple motion control for the Secure sections of the pressure roller opposite the carrier. The positioning drive, which of course is in must be able to exert a certain force for example formed by a piston-cylinder arrangement his.

In an alternative embodiment can be provided be that the positioning drive each within the Section is arranged. This makes external assemblies avoided and the space requirement reduced.

Each section preferably has an axial one displaceable slide arrangement, the slide arrangements from one end of the support roller can be operated. With the help of the slide arrangements the individual sections engage with each other to be brought. In the simplest case, here Bolts or similar parts axially displaced, see above that they have a fixed connection in the direction of rotation adjacent sections effect. The actuation of one end of the support roller ago simplifies the Control.

It is advantageous if the Support roller arranged a slide actuator which is the spool arrangement of the neighboring one Section actuated, the slide arrangements of following sections by the slide arrangement of the previous section are actuated. The slide actuator can for example by a hydraulic piston-cylinder arrangement be formed which generates the force with the help of hydraulic fluid, to move the first slide axially. This shifting movement of the first slider or the first But slide arrangement not only causes a lock between the slide actuator and the subsequent section, but resolves at the same time an axial movement of the slide arrangement out in this section, leading to locking this Section comes with the following section. This Movement then continues over the entire axial length the platen roller continues.

Preferably, the slide arrangements are adjacent Sections on their facing active surfaces an interventional structure. An advantageous intervention structure is for example a toothing. A The alternative is a roughened surface on both Shifting arrangements. Both structures leave a lock neighboring sections more or less position-independent or at least in a large number of rotation angle positions to. Interlocking adjacent sections through the coupling device can then control very easily.

The slide arrangements preferably have return springs on. If the slide actuator except Operation is set, then the slide assemblies automatically reset and solve themselves the interlock between adjacent sections.

The task is in a method of the aforementioned Art solved in that the platen roller in Axial direction is divided into sections at the beginning of the winding process coupled and driven together be, after reaching a predetermined Diameter of the material web rolls of the drive ceases and the sections are uncoupled.

As explained above in connection with the device, it is possible to do this at the start of the winding process Winding rolls evenly not only with a contact pressure to act upon, but still at the same time initiate additional drive torque so that the Control of the winding hardness or the winding hardness curve can be significantly improved. With increasing Roll diameter is such a sensitive control no longer necessary, so that from a predetermined Roller diameter of the drive of the support roller is eliminated can.

It is preferred that when the predetermined is reached Diameter sections, the two web rolls overlap, lifted off the web rolls become. This reduces the risk that due to different roller diameters Winding rolls too high or too low winding hardness result in the marginal areas.

Fig. 1

eine erste Ausgestaltung der Vorrichtung zu Beginn eines Wickelvorgangs,

Fig. 2

die Vorrichtung in einem fortgeschrittenen Stadium des Wickelvorganges und

Fig. 3

eine alternative Ausgestaltung.

The invention is described below with reference to preferred embodiments in conjunction with the drawing. Show here:

Fig. 1

a first embodiment of the device at the beginning of a winding process,

Fig. 2

the device in an advanced stage of the winding process and

Fig. 3

an alternative embodiment.

Fig. 1 shows a schematic side view in Fig. 1a and in Fig. 1b a front view of a roll winding device 1. The roll winding device 1 has a winding bed 2, which by two support rollers 3, 4th is formed. In the winding bed 2 lie in the axial direction next to each other several winding rolls 5, which are shown in Fig. 1b are designated 5a, 5b, 5c and 5d. The winding rolls 5a-5d are caused by the rotation of the support rollers 3, 4 or at least one of the two support rollers 3, 4 driven and thereby pull a not shown Material web previously cut into partial webs has been on a roll core 6. The side by side lying winding rolls 5a-5d are also used as winding rolls designated.

A support roller 7 lies on the winding rollers 5a-5d on. As can be seen from Fig. 1b, the support roller 7 in the axial direction in a plurality of sections 7a, 7h divided. Each section 7a-7h is on two levers 8 rotatably mounted, the lever 8 in turn are pivotally suspended on a support 9. The levers 8 are on the support 9 about a pivot point 10 rotatable, being driven by a positioning drive 11 can be pivoted relative to the carrier 9. The Positioning drive 11 is here as a piston-cylinder arrangement shown. But he can also be trained differently be, for example, as an electrical or magnetic Drive.

The carrier in turn is in the direction of a double arrow 12 with the help of a not shown Linear actuator movable in the vertical direction, i.e. he can be moved up and down relative to the winding rollers 5.

A holder 13 for a friction roller 14 is arranged on the carrier 9. The friction roller is over a chain 15 or one Belt with a rotary drive 16, for example an electric motor, which is also connected to the carrier 9 is arranged.

The positioning drive 11 of each section 7a-7h the support roller is at the beginning of the winding process, as shown for example in Fig. 1, operated so that the individual sections 7a-7h of the support roller 7 are pressed against the friction roller 14 with a force that is practically slip-free Frictional engagement between the friction roller 14 and the sections 7a-7h of the platen roller 7 causes. then the carrier 9 is lowered so far that the support roller 7 rests on the winding rollers 5 and this with a certain, definable and possibly also adjustable Press force into the changing bed 2.

This procedure ensures that the winding rolls 5 on the one hand at the beginning of the winding process because of the relatively high pressure and on the other hand because of the drive torque introduced via the friction roller 7 wound with a relatively high winding hardness can be. By reducing the pressure with increasing diameter and / or by a reduction of the drive torque via the friction roller 14 can Winding hardness can be reduced with increasing diameter. With increasing diameter, the carrier 9 in Direction of arrow 12 moved up so that the Support roller 7 always remains on the winding rollers 5.

As already mentioned above, the friction roller lies 14 so on the sections 7a-7h that a slip-free Drive of the sections 7a-7h is guaranteed. But this is also all sections 7a-7h of the support roller 7 non-rotatably coupled. It is only one only drive necessary to all sections 7a-7h the support roller 7 to drive.

2a now shows the device 1 at a time, where the winding is more advanced. The The diameter of the winding rolls 5 has increased. Accordingly, the carrier 9 has moved upward Service. The carrier 9 has a transmitter 17 for a sensor 18. If the encoder 17 is in agreement stands with the sensor 18, as an example in FIG. 2a shown, then the winding rollers 5 have one Diameter at which an additional drive torque about the platen roller 7 is no longer required. As can be seen from Fig. 2b, the winding rolls 5a-5d also different diameters at this time, the differences here being exaggerated are shown.

As soon as this diameter is reached, the Positioning drive 11 actuated and lever 8 clockwise pivoted about the pivot point 10 so that the individual sections 7a-7h of the platen roller 7 from the Friction roller 14 come free, so no longer driven become. At the same time, however, they are used accordingly greater force against the circumference of the winding rolls 5 pressed. The pivoting movement of the lever 8 can here be synchronized with a stroke of the Carrier 9.

If the sections 7a-7h of the platen roller 7 from the Friction roller 14 are lifted off, then the clutch solved between the individual sections 7a-7h. At the same time, the drive stops. The support roller 7 or their sections 7a-7h then only serve to the winding hardness of the winding rolls with the help of a contact pressure 5a-5d to control. This can be done with the help the platen roller 7 exerted pressure in the course of the further Winding process can still be reduced because the increasing Dead weight of the winding rolls 5 to a corresponding one Increase of the contact pressures on the support rollers 3, 4 leads.

As can be seen from Fig. 2b, the sections 7b, 7d, 7f of the support roller 7 from the winding rollers 5 lifted off, because otherwise they are on two winding rollers 5a, 5b or 5b, 5c or 5c, 5d would act simultaneously, although these winding rolls have different diameters exhibit.

Fig. 3 shows an alternative embodiment of a support roller 7 '. In contrast to the design according to 1 and 2, where the coupling device, so to speak acts from the outside on the platen roller 7 is now an "inner" coupling device is provided.

The platen roller 7 'has an axis 19 which of Bearing rings 20 is surrounded. The axis 19 is non-rotatable held. The bearing rings 20 are by means of pistons 21, 22 in corresponding cylinders in the axis 19 are used, up and down (based on the representation of Fig. 2) movable, in other words towards or away from the winding rolls 5. in this connection there is a separate bearing ring for each section 7a ', 7b' 20. Each bearing ring 20 can be raised individually or be lowered.

Bearings 23 are arranged on the bearing rings 20, with whose help jackets 24 of the individual sections 7a ', 7b' can rotate relative to the bearing rings 20.

At one end, on the left in Fig. 3a, is a End piece 25 is provided, which with the help of bearings 26 is rotatably mounted on the axis 19. The end piece 25 has a gear 27 on the end face, with the help of which it is driven by a motor, not shown can be.

In the end piece 25, an annular piston 28 is provided, which via a pressure chamber 29 with the pressure of a hydraulic fluid can be acted upon by a Line 30 is supplied. A return spring 31 is used to push the annular piston 28 to the left, ie in Direction towards the gear 27 when the pressure in Pressure chamber 29 drops.

The annular piston 28 is via one or more actuating rods 32 connected to a driving ring 33, the completely in the depressurized state of the pressure chamber 29 is pushed back into the end piece 25. The driving ring 33 has on its end face (in Fig. 3a right) a toothing, not shown.

In the jacket 24 of the section adjoining the end piece 25 7a ', a ring 34 is now provided which several poles evenly distributed in the circumferential direction 35 is connected to a drive ring 36 which corresponds to the driving ring 33. A return spring 37 pushes the rings 34, 36 into their left end position.

If now the individual sections 7a ', 7b' ... with each other to be coupled, then they will be first in axial alignment with each other and with the end piece 25 brought, as shown in Fig. 3a. If so the pressure chamber 29 is pressurized Ring piston 28 shifted to the right. This way the driver ring 33 engages the ring 34, wherein the teeth of the two rings mesh and form a torque transmitting connection. At the same time, the driver ring is on the rod 35 36 also pushed to the right and goes a corresponding one Connection to ring 34 of the following section 7b 'a. By doing this, Pressurizing the pressure chamber 29 all sections 7a ', 7b' ... non-rotatably coupled.

When the desired roll diameter is reached, the coupling is released and the position of the jackets 24 of the individual sections 7a ', 7b' ... can by Pistons 21, 22 can be adjusted. Because the pistons are pressure controlled are, you can with relatively simple measures achieve that all winding rollers 5 with the same Contact pressure can be applied.

Claims (14)

1. Device for winding rolls, having a rider roll which can be placed on a wound roll arrangement and which is subdivided in the axial direction into individual sections which have a common rotational drive, characterized in that the sections (7a-7h) can be coupled to one another in the axial direction by a releasable coupling device (14, 33, 34, 36).
2. Device according to Claim 1, characterized in that the sections (7a-7h) are arranged on a carrier (9) which can be moved relative to the wound roll arrangement (5), it being possible for each section, when uncoupled, to be moved individually with respect to the carrier (9) and each section having a positioning drive (11, 21, 22).
3. Device according to Claim 1 or 2, characterized in that the rider roll (7, 7') is arranged above a winding bed (2) which is formed by at least two carrier rolls (3, 4).
4. Device according to one of Claims 1 to 3, characterized in that the rotational drive (14-16; 27) and the coupling device (14; 33, 34, 36) are connected to a control device which reacts to a diameter of the wound roll arrangement (5).
5. Device according to one of Claims 1 to 4, characterized in that at least part of the rotational drive (14) forms the coupling device.
6. Device according to Claim 5, characterized in that the rotational drive has a driven friction roller (14) which bears frictionally on all the sections (7a-7h) .
7. Device according to one of Claims 2 to 6, characterized in that the sections (7a-7h) are mounted on pivoting levers (8) on which the positioning drive (11) acts.
8. Device according to one of Claims 2 to 5, characterized in that the positioning drive (21, 22) is in each case arranged within the section (7a', 7b').
9. Device according to Claim 8, characterized in that each section (7a', 7b') has an axially displaceable slider arrangement (34-36), it being possible for the slider arrangements (34-36) to be actuated from one end of the rider roll (7').
10. Device according to Claim 9, characterized in that at one end of the rider roll (7') there is arranged a slider actuating device (25), which actuates the slider arrangements (34-36) of the adjacent section (7a'), it being possible for the slider arrangements (34-36) of the following sections (7b') to be actuated by the slider arrangement of the preceding section (7a').
11. Device according to Claim 9 or 10, characterized in that the slider arrangements (34-36) of adjacent sections (7a', 7b') have an engagement structure on their mutually facing operative surfaces.
12. Device according to one of Claims 9 to 11, characterized in that the slider arrangements (34-36) have restoring springs (37).
13. Winding method for winding part webs cut from a material web to form material web rolls, in which a driven rider roll bears with a predetermined pressure on the material web rolls, characterized in that the rider roll is subdivided in the axial direction into sections which, at the start of the winding operation, are coupled and driven together, the drive being stopped and the sections being uncoupled after a predetermined diameter of the material web rolls has been reached.
14. Method according to Claim 13, characterized in that, when a predetermined diameter is reached, sections which overlap two material web rolls are lifted off the material web rolls.

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