ES2261565T3 - DEVICE FOR THE ROLLING OF MATERIAL BANDS IN ROLLS. - Google Patents

Abstract

The machine for winding a web (1) of material into a reel on interchangeable, rotating shafts (2) has support rollers (4, 5) which are mounted on arms (6) with a common pivot. This is attached to a carriage (7) which can slide towards and away from the shafts. One support roller remains in contact with the shaft on to which the web is to be wound throughout the winding process.

Description

Device for winding bands roll material.

The invention relates to a device for winding bands of rolled material alternating on central winding shafts rotatably driven with axes parallel to each other, in which each winding shaft is can during the winding process out of the position of winding and another winding tree can be moved to the angular position, with a first support cylinder to rest on the material wound on the winding tree, which found in the angular position, and with at least one second support cylinder for winding shaft support which must be adjusted in the angular position, in which the cylinders of support are housed in articulation arms, which are arranged in a support carriage that is movable towards winding trees, in addition to an installation for transverse separation of the material band when changing from one tree winding another.

A device of this type is known from of document DE 41 04 635. On this device, at the end of winding process two support cylinders are used. In first the winding process is carried out on a first support cylinder, the arrangement of such being chosen so that the material band is rolled first partially around the support cylinder and then rests exactly at the point of contact between the support cylinder and the roller on which the material must be wound on the roller winding If the roll is rolled finished, then it is turned out of the winding position. To that end, it turns on first the second winding cylinder in the direction of  the march of the material band behind the first cylinder of Support on the finished roll. A short time later, both cylinders of Support rest on the finished roll. Then the First support cylinder down. During the turning process down, the conduction of the material band is, however, forced, so that the band of material comes into contact with the finished roll in front of the support surface of the second support cylinder This "loose" support of the material band in the finished roll can lead to the formation of inclusions of air, with which ripples can be formed, which are pressed flat forming folds. This problem can be observed especially in stretched sheets and sheets Adhesive

The problem is only solved when the first support cylinder has moved away from the finished roll to the point that the material band re-enters tangentially between the finished roll and the second support roller.

In addition, the application of a new cylinder in a almost finished roll roll can lead to displacement of the edges, which is observed in most materials, about All in plain, non-adhesive products. This is because especially that the cylindrical roller shapes and position of the second support roller do not correspond with enough accuracy.

The invention has the task of configuring a device of the type mentioned at the beginning in such a way that avoid air inclusions as well as the appearance of a edge displacement shortly before changing the roll finished in a reliable way.

This task is solved according to the invention because the articulation arms of the cylinders of support are housed concentrically with each other and controlled from such that in each case a support cylinder remains supported from the beginning to the end of the winding process with the winding tree on which the material.

The advantage achieved through the invention it consists essentially in that through the provision or the housing according to the invention of the support cylinders in each case a support cylinder can remain in the roll from the beginning of the winding process until its end. After the termination of the winding process in the finished roll and After separation of the material band, it can be removed the support cylinder used until then through its concentric housing outside the winding area while that the next support cylinder assumes the winding process in the new winding tree. This support cylinder remains again until the end of the winding process in contact with the roll, while the first support cylinder is moves to a position, where it then comes into contact with New with a new winding tree. Since this way from the beginning to the end of the winding process only one support cylinder is in contact with the winding  of the roll, the difficulties described by beginning.

In a preferred embodiment of the invention, it may be provided in this case that the arms of joint are arranged on a common tree. In this case, there is also especially the possibility that the arms of articulation are arranged mode of a revolver system.

In addition, it has been proven advantageously within the framework of the invention, that the articulation arms They have equal lengths to each other.

To enable a smooth transfer from one winding tree to the other, it is convenient that articulation arms are housed so that they can rotate continuously in the same direction of rotation.

Since the roll winding during the winding process can be diverted to one extent insignificant of the ideal cylindrical shape, it is convenient that the articulation arms are configured of varying lengths to enable a compensation movement of the cylinders of support for. However, there is also the possibility of that a possibility of displacement of the articulation arms to enable a compensation movement of the support cylinders.

The following explains in detail the invention in an exemplary embodiment represented in the drawing; in this case:

Figure 1 shows the device according with the invention in schematic representation, in which only winding trees as well as cylinders are represented of support arranged on the support car and the development of the material band approximately at the time of separation of The material band.

Figure 2 shows the object according to the Figure 1 at the beginning of the winding process in a tree new winding, while you can download the finished roll

Figure 3 shows the object according to Figure 1, but before the winding shaft rotation from the initial winding position to the finished winding position.
do.

Figure 4 shows the object according to the Figure 1, in which the winding tree is in the finished winding position and the second support cylinder is turned inward to shorten the modifications of the band lengths.

Figure 5 shows the object according to the Figure 1 in another winding advance.

Figure 6 shows the object according to the Figure 1, in which a new tree is placed here again winding supported by the material band.

Figure 7 shows the arrangement of the support cylinders with their articulation arms in the form of a revolver system

The device represented in the drawing serves for winding bands of material 1 in rolls 3 alternating on driven central winding trees of rotating shape with parallel axes to each other. In this case, each winding shaft 2 can be moved after the process of winding out of the winding position and another tree of winding 2 can be moved to the winding position. This can be done, for example, according to the principle of the so-called rotating winder.

To guarantee especially in certain materials a correct and reliable winding of the band material 1, a contact cylinder or a cylinder is necessary of support 4, which serves to support the material wound on the winding shaft 2 that is in the position of winding Regarding the change of trees winding 2 it is necessary at least a second support cylinder 5, which is intended for support on the winding shaft 2 which must be adjusted to the winding position. These cylinders support 4, 5 are housed in this case in articulation arms 6, which are arranged in a support carriage 7 movable towards winding trees 7.

In addition, an installation is planned, not represented in detail in the drawing, for separation cross section of material band 1 during winding from a winding tree 2 towards the other.

As follows from the drawing, the arms of articulation 6 of the support cylinders 4, 5 is housed concentrically with each other and can be controlled, as shown in Figures 1 to 6, such that in each case a cylinder of support 4, 5 is maintained from the beginning to the end of the process of winding supported with the winding shaft 2 on the that the material must be wound or the surrounding surface of the roll 3.

In this way it is possible to ensure that the band of material 1 accumulates, in principle, in the contact area between the winding roll 2 and the support cylinder 4, 5 on the winding roll 2. On the other hand, if the material band 1 Get in touch before this contact line with the roll of winding 2, then they could form between the roll of winding 2 and the band of material 1 that is accumulating new air inclusions, which cannot be eliminated anymore and, therefore so, they would form ripples, which would be crushed later to form folds

As can be deduced, in addition, from the figures 1 to 6, the articulation arms 6 are arranged on a tree common.

However, there is also the possibility depicted in figure 7 that the articulation arms 6 are arranged in the form of a revolver system in a drum 9, the drum 9 being rotatably housed and rotating of the individual articulation arm 6 still to the extent of a reduced angle

The articulation arms 6 present in this Case the same length with each other.

The articulation arms 6 are housed, furthermore, in a manner not shown in detail in Figures 1 to 6, so that they can rotate continuously in it turning sense.

In addition, the articulation arms 6 can be configured variables in the length of the way no represented in detail in the drawing to enable a movement compensation of the support cylinders 4, 5, therefore when the winding of roll 3 has no external shape exact cylindrical.

However, there is also the possibility indicated in Figures 1 to 6 that a possibility of adjusting the articulation arms 6 is provided in the support carriage 7 to enable a compensation movement of the support cylinders 4,
5.

In particular, figure 1 shows approximately the state or the development of the band, such as depicted after the finished winding of a roll of winding 3, that is, during the exit of the band of material 1. A support cylinder 4 is still supported by the winding roll 3 wound finishing, while the second support cylinder 5 is already in contact with the new winding tree 2. No need to present here anymore details, in particular on the drive of the trees of winding 2.

In figure 2, the winding roll 3 Rolled finish is already turned to the extraction position, while the winding in the new position has already started of winding. This winding tree 2 in the new winding position is then transferred according to the Figure 3 to the finished winding position, after which, according to figure 4, to shorten the modifications of  the lengths of the band, the support cylinder 4 is rotated, which has originally in contact with the winding roll rolled 3 finish, inward according to a revolution correspondent.

In figure 5 another advance can be recognized of the winding, being adjusted here already the new tree of winding 2 in the initial winding position. In the figure 6 is reached practically again then the state of according to figure 1, that is, the new tree of winding 2 contacts the web of material 1 of so that the band separation can be carried out material 1 and then the roll 3 roll transfer Finished to the extraction position.

Claims (7)

1. Device for winding bands of material (1) in rolls alternating on central winding trees (2) rotatably driven with axes parallel to each other, in which each winding tree (2) can be used during the process of winding (2) out of the winding position and another winding shaft can be moved to the angular position, with a first support cylinder (4) to rest on the material wound on the winding shaft (2), which is located in the angular position, and with at least a second support cylinder (5) for the support in the winding shaft (2) to be adjusted in the angular position, in which the support cylinders (4, 5) are housed in articulation arms (6), which are arranged in a support carriage (7) that is movable towards the winding trees (2), in addition to an installation for the transverse separation of the material band (1) when changing of a tree winding (2) to another, characterized in that the hinge arms (6) of the supporting cylinders (4, 5) are mounted concentrically to each other and controlled so that in each case one supporting cylinder (4 , 5) remains supported from the beginning to the end of the winding process with the winding shaft (2) on which the material must be wound. 2. Device according to claim 1, characterized in that the articulation arms (6) are arranged on a common shaft. 3. Device according to claim 1, characterized in that the articulation arms (6) are arranged in the form of a revolver system. Device according to one of claims 1 to 3, characterized in that the articulation arms (6) have equal lengths to each other. Device according to one of claims 1, 2 or 4, characterized in that the articulation arms (6) are housed in such a way that they can rotate continuously in the same direction of rotation. Device according to one of the claims 1 to 5, characterized in that the articulation arms (6) are configured variable in length to enable a compensation movement of the support cylinders (4, 5). Device according to one of claims 1 to 5, characterized in that an adjustment capacity of the articulation arms (6) is provided in the support carriage (6) to enable a compensation movement of the support cylinders ( Four. Five).