EP0999159B1 - Reel winding device - Google Patents

Description

The invention relates to a roll winding device with at least one winding bed for receiving at least one Winding roll or a roll core, or the formed by a support roller and a support roller assembly is.

Such a reel winding device is for example from EP 0 829 439 A1. On both sides a central roller support rollers are arranged so that two winding beds are formed.

The invention will be described below in connection with the Winding a paper web described to a winding roll without, however, this application to be limited.

Paper webs are in one of the last manufacturing steps to one for a user, for example cut a printing company, suitable width and then wound into bobbins. This usually serves a winding tube made of cardboard or another only limited stable material as a roll core. The paper web is attached to the roll core. Through a Turning the roll core or the building up Winding roll is the paper web on the perimeter pulled and wound up on the winding roll.

Especially with larger roles you have the winding course to control as accurately as possible. In particular, one would like influence the course of the winding hardness as well as possible. The winding hardness should be at the beginning of the winding process, so near the roll core, be as big as possible and then decrease to the outside.

In the role winding devices, a distinction is made in the rule so-called support roller winder, in which the Winding roll is arranged in a winding bed, the is formed by two support rollers (DE 196 03 211 A1). At least one of the two support rollers is driven. A support of the winding roll on the roll core takes place not here.

Another embodiment is called a so-called back-up roller designated (DE 40 12 979 A1). Here lies the Winding roll on a support roller on. Laterally, the Winder optionally supported by a support roller. In general, here are several bobbins wound at the same time, alternating on both sides the central support roller are arranged, and so, that they are arranged on a gap to each other. Accordingly stands on the front sides of the role of a room to In which a roll core holder is arranged can be, so that the winding roll with increasing Roll diameter and associated weight gain can still be supported on the roll core. This causes a weight relief in the nips between the winding roll and the support roll or the support roll.

At the beginning of the winding process as large as possible To achieve hardness, it is also known, a Pressure roller act on the winding roll to read. The Pressure force of the pressure roller is in the course of Wikkelns decreases and eventually disappears completely from one predetermined diameter.

The invention is based on the object, another Possibility for winding hardness influencing, in particular when wrapping, specify.

This object is achieved with a roll winding device of aforementioned type achieved in that the support roller assembly for each winding roll has a support body, whose axial length can be changed so that it is adapted to the winding roll, and to his axial ends end faces with a predetermined Extension, leaving a working space free, in which a roll core drive is retractable.

Due to the roller core drive you can use the winding roll not only on the driven support roller or a possibly power driven carrier roll on the circumference, but also centrally on the roll core, i. the Wikkelhülse, and also and especially at the beginning of the Wikkelvorgangs. This can be the voltage of aufwikkelnden Web, e.g. the paper web, increase what just at the beginning of the winding process is important to to achieve the largest possible winding hardness. Such a Roll core drive could not previously used because there was no room for him. At the beginning of the winding process, the winding roll dives because of their small diameter, namely relatively far into the winding bed, so that you at their front ends if necessary could accommodate a holder, but not a drive. Due to the use of Carrier whose width is approximately the axial Erstrekkung the winding roll corresponds, but you can now on the one hand a support of the winding roll over its entire Achieve length, which in particular to a later Stage of winding is important when the winding roll a larger diameter and thus a larger one Weight achieved. At the beginning of the winding but is on The front ends have enough space available to here to accommodate the roller core drive. If on one Side of the backup roll wound several bobbins be, then for each winding roll is a separate support body available. The supporting bodies are on one side arranged at a distance that is sufficient to accommodate the roller core drives. On the other Side of the backup roller can of course also a corresponding support roller assembly of one or more Be provided supportive bodies. The only limitation present here is that the width of Wikkelrolle, which creates the "gap" is big enough to to accommodate two roll core drives. This can be but usually reach. If narrower winding rolls can be required, this one at the axial ends Position the reel winder.

Preferably, the support body is characterized by a stack Slices are formed, which are detachably connected to each other are. This embodiment is particularly advantageous when the cutting plans change, i. wound rolls have to be wound with changing widths. You do not have to have your own width for each roll width Keep the supporting body in stock and assemble what the investment and keeps labor costs low. You can now the desired roll width by assembling achieve different slices.

It is particularly preferred that all discs of a Stack except for a shim, if necessary have substantially the same axial length. In this case you usually only need a kind of slices, what the stockpiling and the Spare parts procurement made much easier. In In some cases, shims may be necessary be to the difference between the axial length of the Piles and the winding roll will not get too big to let. But as a rule, the roll widths do not want to change continuously, but predetermined gradations used, one comes with discs of a thickness out. Another advantage of the subdivision of the support body in slices is that the test of different Roller documents on individual segments easier and thus cheaper than on wide support rollers is. In addition, can be on narrower sections more complex roller coatings easier realize as on wide support rollers.

So is in a particularly preferred embodiment provided that each disc an inflatable pad having. The rubber can, for example, by rubber or another elastomer is formed and carries Thus, to reduce the burden of the winding roll in Nip between winding roll and carrier roll at.

Preferably, the support body is on a over the axial length of the support roller through shaft arranged. This is compared to conventional backup roller winder no major design changes necessary. The support body can, apart from the Thinner sections of the wave, same behavior as a conventional carrier also.

Preferably, the support body is rotationally fixed with the shaft connected and the shaft is driven. Leave it in the same way as in known backup roller winder also a drive, optionally an additional Drive to achieve the winding roll. However, you can the support body drive in this case axially relatively far be arranged outside, so for example outside the axial extent of the support roller, so that he Winding does not bother.

Preferably, the support body is axially on the shaft displaceable. He allows himself to different Adjust positions of the winding roll, for example is favorable for changes in the cutting plan.

Advantageously, the support body by at least formed a ring whose radial thickness at least as big is like the height of a roller core drive bearing Winding head. This is a relatively easy too realizing design. The wave can be relative stay fat. The working space is defined by the radial Thickness of the ring or rings determined. Also the ring can be axially divided into slices.

Preferably, the ring is clamped on the shaft. He can then be moved to the desired position and is both rotationally fixed by clamping in the axial direction firmly connected to the shaft. The Clamping does not require more complicated joining techniques about a positive connection by a tongue and groove connection or by a splined connection.

Advantageously, the support roller assembly in the direction of gravity supported at the bottom by a support device. Because of the changing diameter one has over the axial extent of the support roller arrangement, which corresponds to the axial extent of the support roller, not the same mechanical stability everywhere. Especially There is a risk that "thinner" shaft sections Bend when the adjacent support body be charged. This bending can be Counteract by a support device. The support device can, for example, on attack a shaft portion between two support bodies. But it can also directly on a support body Act.

It is preferred that the support device is displaceable in the axial direction. She can then be used where necessary and in particular follow a changing cutting plan. Preferably she is in a gap between two supporting bodies arranged where also arranged the windings or the become. In this case, you can see the height of the support roller assembly keep small.

Advantageously, the support body is on a movable Carriage arrangement arranged. This one reaches high degree of flexibility. With the help of the carriage arrangement Can the support body to desired positions procedure and be fixed there.

Preferably, the carriage assembly has a support body drive on. This is an alternative to it all Drive support of one side by a common shaft allow. If a separate support body drive is present, then a continuous wave is not more necessary and there is a larger work space to disposal.

Preferably, the carriage assembly for each Slice your own sled. The single ones Slices are relatively light and can therefore be with handle a sled relatively well. For training a supporting body then only need several carriages next to each other positioned and optionally with each other get connected.

Advantageously, the support body via a roller discharge table movable. You can, for example, from Remove the backup roller. This facilitates the ejection the winding roll, especially when it comes to relatively small roles.

Advantageously, the roller core drive is height adjustable. The center or the axis of rotation of the Supporting body can then remain stationary. With increasing Diameter of the roller core drive moves to above.

In an alternative embodiment can be provided be that the roller core drive at least one Part of the winding process is stationary and the supporting body having a pressing device. In this embodiment is the contact pressure at the beginning of the winding process, this is another factor influencing production the winding hardness is, by pressing the support body formed at the forming winding roll. A Roller weight relief takes place only with larger Wikkelrollendurchmesser.

Preferably, a pinch roller arrangement acts on the Winding roll, which is a variety of in the axial direction having arranged behind one another pinch rollers, the individually adjustable relative to a common carrier are. With this configuration, one can achieve that even the pinch rollers do not penetrate into the workspace, So this free for the roller core drive to let. Only those pinch rollers that are Be located above a wound roll to be wound employed, i. extended down. The others, which are located axially outside the winding roll, remain on the carrier, so that there the roller core drive can be accommodated.

Fig. 1

eine Vorderansicht einer ersten Ausgestaltung einer Rollenwickeleinrichtung,

Fig. 2

eine Draufsicht auf die Rollenwickeleinrichtung nach Fig. 1,

Fig. 3

eine perspektivische Darstellung einer anderen Rollenwickeleinrichtung,

Fig. 4

eine schematische Draufsicht auf die Rollenwickeleinrichtung nach Fig. 3,

Fig. 5

einen Schlitten mit einer schematischen Darstellung einer Scheibe eines Tragkörpers und

Fig. 6

einen Querschnitt durch einen Teil der Scheibe.

The invention will be described in more detail below with reference to preferred embodiments in conjunction with the drawings. Herein show:

Fig. 1

a front view of a first embodiment of a reel winding device,

Fig. 2

a top view of the roll winding device of FIG. 1,

Fig. 3

a perspective view of another roll winding device,

Fig. 4

3 is a schematic plan view of the roll winding device according to FIG. 3, FIG.

Fig. 5

a slide with a schematic representation of a disc of a support body and

Fig. 6

a cross section through a portion of the disc.

A reel winding device 1 according to FIGS. 1 and 2 has a centrally arranged support roller 2 with a drive 3 on. On the left and on the right Side is always a support roller assembly 4, 5 provide which together with the support roller 3 each have a Wikkelbett 6, 7 form. In the winding beds 6, 7 are Wikkelrollen 8, 9 arranged. These are dashed in Fig. 1 shown with a diameter that approximates corresponds to their final diameter.

The bobbins 8, 9 are formed by a in Fig. 1 and 2 not shown, but from Fig. 3rd recognizable material web 10, which in different stripes I, II, III has been cut on roll cores 11, 12 is wound up. This is not closer illustrated, but known per se, the paper web 10 attached to the roll cores 11, 12 and the Roll cores 11, 12 set in rotation.

The individual bobbins 8, 9 are on each other Gap arranged, i. the individual strips of the paper web 10 are alternately in the winding bed 6 and the winding bed 7 passed. Accordingly stands between adjacent bobbins 8, 9 in a winding bed 6, 7 always a gap available, the width the corresponding winding roll 9, 8 in the other Changing bed 7, 6 corresponds.

The roll cores 11, 12 are driven by a roller core drive 13, 14 driven. As shown in Fig. 2 can be seen is, can also at each end face of each winding roll 8, 9 a corresponding roller core drive 13, 14 are provided be. Each roller core drive 13, 14 has a Spigot 15, which can be retracted into the roll core 11, 12 and is clamped there, and a motor 16, the Spigot drives. Further, the pin 15 may be a part take the weight of the winding roll 8, 9, which in particular is important when the winding roll 8, 9 a larger diameter and thus a larger weight has reached. In this case, the bearing force lowered slightly on the support roller 3.

Another measure to reduce the tracking force, is, the winding roller 8, 9 not only on supporting the support roller 2, but also at the corresponding Carrier roller assembly 4, 5.

This support has so far meant that no space for the roller core drives 13, 14 was available. This problem is now in the design of the reel winder 1 of FIG. 1 and 2 thereby bypassed, that the support roller assemblies 4, 5 no longer with one over the entire axial length of Rollenwikkeleinrichtung formed through continuous support roller are. Each support roller assembly is made rather at least one support body 17, 18, whose axial length to the axial length of the winding roll 8, 9 to be wound is adapted. To accomplish this, there is each support body 17, 18 of several, in the form of a Stack of composite discs 19, the detachable connected to each other. The discs 19 are here on an axis 20 in the axial direction, i. parallel to the axis of rotation of the support roller 2, displaceable. she are by a clamping device, not shown can be clamped on the axis 20. By adding or removing a disc 19 to the support body 17, 18, the axial length of the support body 17, 18th change.

The diameter of the shaft 20 is also still relatively large. But he is much smaller than that Diameter of the discs 19, which are formed here as rings are. Accordingly, stands at the axially respectively outer ends of the support body 17, 18 a working space 21st available in which the roller core drives 13, 14 are arranged could be. The radial extent of the Discs 19 forming rings, i. their radial thickness, is chosen so that they are at least as big is like the height of the roller core drives 13, 14, i. the roller core drives 13, 14 can be lowered so far be that they hold the roll cores 11, 12 even then and above all, if these are still unwound State in the lowest position in the Gusset between the support roller 2 and the support bodies 17, 18 has slipped into it.

As mentioned above, the discs 19 are on the axis 20 clamped. Now if the axis 20 also with a Drive 22 is provided, then act on the winding roll 8, 9 or the roller core 12 a total of three drives, namely the drive 3 of the support roller 2, the roller core drive 13, 14 and the drive 22 of the shaft 20. With This configuration, it is possible just at the beginning the winding process a significant tension on the Exercise paper web and thus the beginning of the winding roll 8, 9 to wrap very hard. In this winding section the roller core drive 13, 14 has a larger one Influence on the winding hardness than the other two drives.

With increasing diameter of the winding rollers 8, 9 migrates the roller core drive 13, 14 at a not closer Stand shown above. The task of the roller core drive 13, 14 shifts from one Drive function to a hold function to a Weight relief on the support of the winding roll 8, 9 to effect.

In addition, at least in the initial phase of Wikkelung a pinch roller 23 from the top of the roll core 11, 12 act. The pressure roller 23 is on a support 24 attached. As seen from the detail view "X" is a series of pinch rollers 23 in the axial direction arranged side by side and individually lowered. A pinch roller 23 'is in the non-lowered position shown. This is outside the axial extent of the roll core 12. It is from it recognizable that the pressure rollers 23, 23 'the working space 21 for the roller core drives 13, 14 not affect. There is still enough space here available to hold the roll core 11, 12 and drive.

The discs 19 can all have the same axial extension exhibit. It can also be provided that on axial end of each support body 17, 18 a shim with a reduced axial extension is arranged.

Since the axis 20 is one opposite a conventional support roller reduced diameter, there is a risk that the axis 20 bends. This danger becomes Counteracted by a support device 25, which has two support rollers 25 in a carrier 27. The carrier 27 and thus the support rollers 25 can be moved in the axial direction. You can handle it with a changing cutting plan the workrooms 21 follow. Because they are located below the axis 20 they do not disturb the roll core drives 13, 14. The carrier 27 can also be moved transversely to the axis 20 become. This is recommended to put the discs 19 on The axis 20 without obstruction to move axially.

In the embodiment according to FIGS. 1 and 2, the Slices 19 of a support roller assembly 4, 5 respectively a common axis 20 or shaft arranged. The Embodiment of FIGS. 3 to 5 uses another Principle. Like parts are given the same reference numerals provided, corresponding parts with painted Reference numerals.

First, you can see that you are through a different large number of discs 19 'also different large supporting body 17, 18 can create. In Fig. 3 and 4 are these support members 17, 18 with a small axial Distance between the discs 18 'shown in FIG the practice but usually omitted.

Furthermore, it can be seen from Fig. 3 that of the paper web 10, a strip I is wound in the right-hand winding bed 7 becomes, a strip II in the left winding bed. 6 (Winder 8) and a strip III turn in the right winding bed 7. Accordingly, in the right Changing bed 7 a working room available, whose axial length corresponds to the axial length of the winding roll 8.

The holders for the roller core drives are shown in FIG. 3 and 4 not shown again. All drives are only diametrically opposed by a circle with two shown in black quarters.

As can be seen from Fig. 5, the individual Discs 19 'are now arranged on carriages or carriages 28, where they are stored for example on support rollers 29 are one of which have a drive 30 can. The carriage 28 is mounted on wheels 31, so that he with the help of a handle 32 in the desired Position can be driven. The individual discs 19 ', however, still have a central opening 33 in order to connect them coaxially with each other.

From Fig. 4 it can be seen that the winding rollers 8, 9 not exactly the width of the stack of discs 19 ' must have. The bobbins 8, 9 can rather be a little bit bigger. An exact match, like her for the upper winding roll 9 is shown, is only in exceptional cases (only for this winding roll the carriages 28 of the discs 19 'are shown).

The fixation of several carriages 28 in the axial direction one behind the other takes place via the opening 33 in the Washers 19 '. In addition, not shown in detail, but measures known per se can be provided to the carriages 28 on the floor or on a machine base to align so that the axis of rotation 34 of the Washers 19 'parallel to the axis of rotation 35 of the support roller 2 runs.

In addition to the adaptability of the axial length of the individual Supporting body to be supported bobbins 8, 9th has the segmentation of the support body in individual slices the advantage that you different roll coverings on the discs or segments easier and thus more cost-effective can test as on wide support rollers. In addition, more complex roller coatings easier to realize than on wide support rollers. Thus, Fig. 6, for example, a disc 19 with a pad 36 made of rubber and a pad Cavity 37 which are pressurized can. It is therefore an inflatable covering, with which the nip load can be further reduced can.

Instead of rubber, of course, another elastomeric Plastic used. When using Such a coating 36 can also be found in Fig. 3 and 4 shown axial gaps between the leave individual discs. These are filled in, when the pad 36 is compressed.

Claims (18)

1. Reel winding device having at least one winding bed (6, 7) for accommodating at least one wound reel (8, 9) or a core (11, 12), which is formed by a supporting roll (2) and a carrier roll arrangement, characterized in that the carrier roll arrangement (4, 5) has a carrying element (17, 18) for each wound reel (8, 9), whose axial length can be changed in order that it is matched to that of the wound reel (8, 9), and which has at its axial ends end portions with a predetermined extent which leave an operating space (21) free, into which a core drive (13, 14) can be moved.
2. Device according to Claim 1, characterized in that the carrying element (17, 18) is formed by a stack of discs (19, 19') which are loosely connected to one another.
3. Device according to Claim 2, characterized in that all the discs (19, 19') of a stack are of substantially the same axial length, apart from a compensating disc, if appropriate.
4. Device according to Claim 2 or 3, characterized in that each disc (19) has an inflatable cover (36).
5. Device according to one of Claims 1 to 4, characterized in that the carrying element (17, 18) is arranged on a shaft (20) which is continuous over the axial length of the supporting roll (2).
6. Device according to Claim 5, characterized in that the carrying element (17, 18) is firmly connected to the shaft (20) so as to rotate with it and the shaft (20) is driven.
7. Device according to Claim 5 or 6, characterized in that the carrying element can be displaced axially on the shaft (20).
8. Device according to one of Claims 5 to 7, characterized in that the carrying element (18) is formed by at least one ring, whose radial thickness is at least as great as the height of a winding head bearing the core drive (13, 14).
9. Device according to Claim 8, characterized in that the ring can be clamped firmly on the shaft (20).
10. Device according to one of Claims 1 to 9, characterized in that the carrier roll arrangement (4, 5) is supported underneath in the direction of the force of gravity by a supporting device (25).
11. Device according to Claim 10, characterized in that the supporting device (25) can be displaced in the axial direction.
12. Device according to one of Claims 1 to 11, characterized in that the carrying element (17, 18) is arranged on a movable carriage arrangement.
13. Device according to Claim 12, characterized in that the carriage arrangement has a carrying element drive (30).
14. Device according to Claim 12 or 13, characterized in that the carriage arrangement has an individual carriage (28) for each disc (19').
15. Device according to one of Claims 1 to 14, characterized in that the carrying element (17, 18) can be moved over a reel discharge table.
16. Device according to one of Claims 1 to 15, characterized in that the core drive (13, 14) can be adjusted vertically.
17. Device according to one of Claims 1 to 15, characterized in that the core drive (13, 14) is stationary, at least over part of the winding operation, and the carrying element (17, 18) has a pressing device.
18. Device according to one of Claims 1 to 17, characterized in that a pressure roller arrangement (23, 24) acts on the wound reel (8, 9) and has a large number of pressure rollers (23, 23') which are arranged one after another in the axial direction and which can be adjusted individually with respect to a common carrier.

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