DE8019261U1 - DEVICE FOR SEPARATE REWINDING OF LONG-SIDED SHEETS - Google Patents

Description

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PATE NTAN WA LT S OFFICE SCHUMANNSTR. 97. D-4000 DÜSSELDORF

Telephone: (02 11) 683346 Telex: 08586513 copd

PATENT LAWYERS:
Dipl.-Ing. W. COHAUSZ Dipl.-Ing. R. KNAUF Dipl.-Ing. HB COHAUSZ Dipl.-Ing. DH WERNER

Jagenberg-Werke AG |

Hiinmelgeister Str. 107
4000 Düsseldorf 1

Device for the separate winding of lengthways divided webs

The innovation relates to a device for separate winding longitudinally divided webs on at least two axially parallel resting on a rotatably driven support roller each arranged winding rolls. 5

For winding lengthwise divided webs on at least two winding rolls, working according to two different principles Devices known. In the one which works according to one principle, e.g. known from DE-PS 11 96 463 Winding device, the winding rolls are axially parallel on two axially parallel at a small distance from one another arranged driven support rollers. Then I put the winding rolls with their whole weight on the Support the support rollers, the pressure is applied with increasing winding of the winding rolls and increasing their weight

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between them and the support rollers always bigger. This results in increasing mechanical stress the outermost web layers exercised, the winding hardness decreases because of the increasing nip effect and finally the web can even tear if the stress becomes too great. aside from that In addition, the roller gap effect on two support rollers increases the tension on the web.

In the second, e.g. from DE-PS 20 60 758 known device, two winding rollers are diametrically attached to one common support roller arranged axially parallel, with their winding rollers axially supported separately from one another and the bearing can be displaced radially to the back-up roll as the winding increases. In this device the dead weight of the winding roll absorbed by the axle bearing and as a result of the increasing winding increasing loads caused by the dead weight of the winding roll affect the center of the Winding roll out and lead here to the break of the web.

In addition, the center must also absorb the horizontal forces necessary for the line pressure, which with Must be initiated from the outside with the aid of pressure cylinders. The vertically acting weight forces and the horizontally acting pressure forces add up geometrically.

In the generic winding machine known from DE-GM 17 94 528, the winding rollers are in pivot levers stored. This means that the axis of the winding roll is on an arcuate path during winding moved and the line of contact between the winding roller and the support roller on the surface of the support roller at the upper peripheral portion wanders back and forth. This leads to sliding friction between the wound web and the carrier roller,

which leads to uneven winding hardness and creates the risk of the web tearing.

The present innovation is now based on the task of creating a winding device that has the described Does not have disadvantages of known winding devices and in particular the winding of wider longitudinally divided Lanes to large rolls with uniform winding, i.e. uniform winding hardness, are made possible. 10

In order to achieve this object, according to the invention, a device of the type mentioned at the outset is provided with those in the claim proposed features.

The innovation according to the device has the advantage over the known that a division of the Dead weight of the winding roll caused forces he

follows, some of which is added to the support roller and the other part of the weight relief device will. As a result of the vertical guidance of the winding rolls, there is constant axial relief and support the winding roll on the support roller and prevents sliding friction. In doing so, the aforementioned negative occurs

jf · Influence of the nip effect when winding on doubles

carrier roller winding machines do not apply. It therefore comes at

the device according to the innovation neither in the center nor in the periphery of the winding roll to the damage to the web as described.

Preferred configurations of the device according to the invention are characterized in the subclaims. These relate to the design of the weight relief device in the form of hydraulic or pneumatic cylinder-piston or electric drive units. By connecting this weight relief device to one

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Traverse horizontally adjustable winding carriage to different web widths becomes a simple and compact one Construction allows.

By matching the size of the weight relief to the respective diameter of the winding roll, i.e. one Temporally variable weight relief can be the pressure of the winding roll against the support roller in the sense of a Influencing the winding hardness can be controlled in the desired manner. Without this measure, the pressure the winding roll against the support roller and thus the winding hardness increase. But one strives for one with increasing winding The winding hardness of the winding roll decreases in order to avoid the formation of pinch folds inside the winding roll to avoid. It is therefore preferable to increase the weight relief as the winding roll increases, to gradually reduce the pressure of the winding roll against the support roller.

The innovation is explained in more detail using the exemplary embodiments shown in the drawing.

Fig. 1 shows a side view and

FIG. 2 is a plan view of an embodiment of FIG

according to the innovation device with hydraulic or pneumatic axle relief of the winding roll.

The web 2 is drawn off from a supply roll 1 and longitudinally divided by circular knife 3 into several strips 4, which are wound up separately from one another.

The winding device provided for this purpose consists of two axially parallel support rollers 5, which can be rotated

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are driven. On each support roller 5 are separately stored winding rollers 6, the axes of the Support rollers 5 and the winding rollers 6 resting on them lie in the same vertical plane. The direction of rotation of the Roller 1, the support rollers 5 and the winding rollers 6 are indicated in FIG. 1 by arrows.

For each winding roll 6 there are separate weight relief devices intended. Each device exists in the embodiment shown in FIGS from a pneumatic or hydraulic cylinder-piston unit 7, the piston rods 8 on both sides in the open Axle stubs 10 inserted at the ends of the winding tube 9 cause the winding roll 6 to be relieved of the axial load, this being the case Relief during the increasing winding of the winding roll 6 is continuously controllable or adjustable to the increasing Weight of the winding roll 6 through the weight relief device 7, 8 to compensate so that a desired line pressure, which is decisive for the winding hardness is achieved.

Each weight relief device 7, 8 is articulated on a sliding block 14 which is along a guide 13 on • winding carriage 12 can be moved vertically. The winding chute 12 is attached to the cross member 11 so as to be longitudinally displaceable, around according to the different widths of the strips 4 and the different locations of the interfaces transversely to the direction of travel of the web in the desired position with the weight relief device attached to it 7, 8 can be set. As FIG. 2 illustrates, the strips 4 are alternating wound on winding rollers 6 on one and on winding rollers 6 on the other support roller 5. Through this enough space is created for the rewind stands and the weight load on the support rollers is reduced. This makes it possible to also produce larger rolls produce.

Claims (5)

■ · · · · · at ti • · COHAÜSZ '&' ^ 'LÖRACK 111 ··· ··!> 1) III PATHNTAN WALTS OFFICE SOHUMANNSTR. Θ7 ■ D-4000 DÜSSELDORF Telephone; (0211) 68 33 46 Telex: 0858 6513 cop d PATENTANWÄLTE: Dlpl.-Ing. W. COHAUSZ Dlpl.-Ing. R. KNAUF Dipl.-Ing. H. B. COHAUSZ · Dlpl.-Ing. D, H. WERNER G 80 19 261.6 09/22/1981 claims 1. Device for the separate winding of longitudinally divided Tracks arranged axially parallel on at least two each resting on a rotatably driven support roller Winding rolls, characterized in that the winding rolls (6) rest on the top surface line of the support rolls (5), arranged and articulated on their axes force-adjustable weight relief devices (7, 8) are, the axes along a guide (13) arranged on the cross member (11) perpendicular are led. 2. Apparatus according to claim 1, characterized by a hydraulic, pneumatic or electrical weight relief device that is inserted into the ends of the winding roll (6) Grip the stub axle (10) on the winding roll (6). 3. Apparatus according to claim 1 or 2, characterized in that the weight relief device can be controlled or regulated depending on the winding diameter. 34 191
W / Ka ff · f f «" * 4. Device according to one of claims 1 to 3, characterized in that on between and parallel to the support rollers (5) arranged cross member (11) with the guide (13) for the axes of the winding rolls (6) provided winding carriage (12), each in pairs to the width of to be wound up web strips (4) and thus alignable in line with the interfaces, longitudinally displaceable are arranged. 5. Apparatus according to claim 5, characterized in that the weight relief device (7, 8) is arranged on the winding carriage (12) is.