EP0921084A1 - Winding apparatus for a slitter rewinder - Google Patents

Abstract

At least one gripper (30, 31) is provided in each reeling position, movable jointly in an axial direction with a block (24, 25) and having a gripping head (33, 34). The gripping head can grip and retain a reel core (5) and can move from the supply web to the bearing spindle (19, 20).

Description

The invention relates to a winding device for a Slitter with a backup roller arrangement, several Winding positions in at least two winding position groups are arranged and each a pair of axially displaceable trestles with one bearing mandrel each have central holding a winding roll, with a essentially axially extending feed path for Roll cores and with a device for distributing the Roll cores on the individual winding positions.

Such a winding device is from WO 97/08088 known. The feed path consists of two rails, each of which is attached to a support that adjusted in height independently of the other carrier can be. The individual roll cores of a set are successively shifted into the respective axial position which is assigned to a winding position. There become by lifting one or the other rail stored laterally and in brackets from which it also when the assigned carrier is raised again can no longer roll out. This makes it possible to separate the roll cores, i.e. on the individual Distribute winding position groups. The bearers then with all the roll cores on it along a given, essentially straight line Trajectory raised so that the individual mandrels in every winding position in the roll cores can be retracted.

Another embodiment is known from DE 38 00 702 C2. Here the roll cores are already in the retraction into the winding device the individual winding position groups assigned. You have here for each winding position group a rail arrangement is provided. The two rail arrangements are so close to each other adjacent that the individual roll cores overlap. So you only need a single sliding movement, around all roll cores of a set in the winding device to insert. However, there is a sort here the roll cores before insertion, i.e. a distributing required on the rails.

Another embodiment is in DE 37 37 503 C2 and - essentially similar - described in DE 37 44 961 C2. In both cases the feed path is above provided a backup roller assembly. The feed path consists of a tube closed at the bottom that opens can be. There are tentacles below the tube provided that the tips are directed upwards are and protrude through a central plane below the pipe. The individual roll cores are made with the help of Tentacles on one side or the other of the middle plane derived. The tentacles can also go down be folded away. The roll cores then fall on one roof-like distribution device to their winding positions to roll. However, this winding device comes without the bearing pins on the axially displaceable Goats out.

In the first case, it takes a relatively long time to get all the roll cores a set retracted into the winding device have been. In the second case there is an increased measure care required when inserting. In both the latter cases, the isolation by Catch arms made that are uniform over the axial length are distributed. You’re at freedom, to design the cutting plan to certain dimensions the roll cores limited.

The invention has for its object the loading a winding device with roll cores at one to design a high degree of automation possibilities that the cutting plan remains flexible.

This task is the beginning of a winding device mentioned type solved in that in each winding position at least one gripper is arranged, the is movable together with a trestle in the axial direction and has a gripping head, the gripping means for gripping and holding a roll core and from the feed path to the mandrel is movable.

With such a configuration, various can be achieved Advantages: On the one hand, the gripper can be put together be moved in the axial direction with a trestle. To this Way you make sure that the gripper is always in is a position in which he has a core role that is in the corresponding winding position with a material web to be wound into a winding roll and placed in the wrapping position can. It is no longer necessary to use all roll cores to move together. Rather, it can be any core role are handled individually, which does not exclude that at the same time several roll cores from the feed path be brought into the winding position. All roll cores can, however, together in the winding device be introduced. Only the order and the axial alignment to the winding positions must be correct. This saves a considerable amount of time. You can also do that Introduce with less attention let it do so with simpler means automated or by inexperienced operators can be made. By moving the Roll core from the feed path to the mandrel with the help of the head, the path of movement of the roller core is fixed given. There can be no random deviations occur, such as in a swinging Rolling of the roll core could occur. The entire movement of the roll core is under control held so that the winding device even when changing rolls, i.e. when feeding a new roll core in the single winding position, with high reliability can work.

In a preferred embodiment it is provided that the gripper is attached to its trestle. This makes it easier the controlled movement of the gripper together with the goat. As soon as the goat is moved, what for example necessary when changing the cutting plan the gripper is also moved. That way poses one makes sure with very simple means that in every Winding position of the gripper is present.

Each trestle preferably has a gripper. This further facilitates handling. You make sure that each roll core is gripped at two points can be. These two points are because of the gripper attached to the trestle, adjacent the ends of the roll core. This results in very stable storage. Of the The roll core cannot tip over during transport. At the same time, the roll core is held where the Bearings should be introduced into it, namely on The End. This means that even with less stable roll cores a very precise assignment between the position of the roll core and the position of the mandrels possible.

It is particularly preferred that the two grippers on the sides of the trestles facing one another Pair are arranged. You are now automatically within an axial length that also extends the roll core is located. Further measures to the Then align the gripper axially to the roll core not necessary anymore.

The feed path is preferably below the support roller arrangement arranged and the mandrels are next to arranged the backup roller assembly. This simplifies it the construction of the winding device and facilitated handling when feeding. It is no longer necessary, that a tube is opened downwards. The feed path can be done without the need for additional movements be kept rigid. You only need the roll cores support from below and provide access from another side, for example from above or from the side or from above and from the side. For the grippers there is only one movement necessary from the feed path to the mandrels, which can be implemented relatively easily.

This is in a particularly preferred embodiment provided that the head have a non-linear trajectory has outside around the backup roller assembly. Movements that are exclusive would be linear here run on a straight line or a circular line. In order to one not only avoids a collision between the Back-up roller arrangement and the head of the gripper. Man is also in the dimensioning of the backup roller assembly freer. For example, when the backup roller assembly is formed by a single backup roller can have a relatively large diameter, which improves stiffness. Basically it is it is only necessary that around the backup roller assembly there is some room for maneuver around through which the movement path of the head runs. The roll cores can then be around the outside of the support roller arrangement be performed.

This is in a particularly preferred embodiment provided that the trajectory through two degrees of freedom can be generated in the movement of the head. Accordingly, there are only two drives for the Head necessary what the control of the head along simplified the trajectory.

The movement path is preferably a translatory one Portion and formed by a swivel portion. So the motion has a linear component, the for example by a linear drive, such as a piston-cylinder arrangement can be realized, and a Swivel component caused by swiveling the piston-cylinder arrangement by an appropriately trained Engine can be generated.

The translatory portion is preferably temporal decoupled from the swivel portion. The trajectory is there in other words, from clearly separated sections that follow one another in time expire. It only has to be one at a time Drive can be put into operation, which is the control further simplified. Accordingly, the control device can be carried out relatively inexpensively.

The translational part is advantageously by two Sections before and after the swivel portion educated. The head grabs a roll core, will retracted, swiveled and then extended again. This relatively simple movement is enough to get the roll core collision-free outside around the support roller arrangement to lead around.

In an advantageous embodiment, the Feed path arranged an adhesive application device, which the individual roll cores depending on the intended winding position group at a predetermined Provides peripheral portion with adhesive. In order to the fact that the individual Roll cores in the individual winding position groups relative a different orientation to the backup roller arrangement to have. If the material webs fed, the should be wound up without further handling to be attached to the roll cores, then you have to provide a suitable adhesive surface on the roll cores, which is then simply pressed against the material web must be started to start the winding process. If this adhesive surface when inserting the roll cores generated in the winding device, the further Handling easier.

Fig. 1

eine schematische Vorderansicht einer Wickeleinrichtung,

Fig. 2

verschiedene Positionen eines Greifers beim Übergeben eines Rollenkernes,

Fig. 3

eine Bewegungsbahn des Rollenkernes und

Fig. 4

eine schematische Seitenansicht einer Wickelposition.

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

Fig. 1

1 shows a schematic front view of a winding device,

Fig. 2

different positions of a gripper when transferring a roll core,

Fig. 3

a path of movement of the roll core and

Fig. 4

is a schematic side view of a winding position.

A winding device designated 1 overall in FIG. 1 for a slitter has a backup roller 2 on the opposite side when winding Sides of winding rollers 3, 4 are in contact. The winding rolls are wound on roll cores 5, 6 which for example, as winding sleeves made of cardboard could be. At the start of the winding process, the Roll cores with the help of a pressure roller arrangement 7, 8 pressed against the support roller 2. Otherwise they are Roll cores 5, 6 by only shown schematically Drive arrangement 9, 10 driven centrally.

The two winding rolls 3, 4 shown are in two different winding position groups 11, 12 arranged. In each of the winding position groups 11, 12 can several winding rolls 3 or 4 wound simultaneously become. The individual winding rolls 3 and 4 have then a certain axial distance from each other, so that the drive assemblies 9, 10 axially in the roll cores 5, 6 can retract. The winding rollers 3 in the winding position group 11 are to the winding rolls 4 of the Winding position group 12 arranged on gap. The Widths of the gaps correspond to the widths, i.e. the axial lengths of the winding rolls in the other Winding position group.

The webs to be wound come from a material web 13, which is guided by a cutting device 14 and there it is divided lengthways to the webs to create.

Below the support roller 2 (there can also be more than one Back-up roll 2 can be provided to form a back-up roll arrangement to form) there is a feed path 15 for Roll cores 16. While the winding rolls 3, 4 are wound up can be a new set or set of roll cores 16 are introduced in the axial direction one after the other and at once, i.e. With a boost. The individual roll cores are previously on the corresponding axial length has been brought. At the The roll cores 16 can be inserted by means of adhesive application devices 17, 18 at certain peripheral areas be made sticky. Here, each time only one of the two adhesive application devices shown 17, 18 put into operation depending on which winding position group 11, 12 of the individual roll core 16 to be wound later should.

As can be seen from FIG. 4, a roll core 5 for winding between two mandrels 19, 20 centrally held. The bearing pins 19, 20 are on slides 21, 22 rotatably supported, at least one of the two Carriage 21, 22 a rotary drive 23 for driving the Bearing mandrel 20, which is designed here as a mandrel, having. The slides 21, 22 are on trestles 24, 25 supported and there on the support roller 2 to or from your moving away. This is a movement perpendicular to the Drawing plane of Fig. 4. With this movement one can an increasing roll diameter when winding carry. The blocks 24, 25 are in turn on one Foundation 26 can be moved in the direction of a double arrow 27. One can by relocating, for example a shift or a procedure of the jacks 24, 25 cause changes in the cutting plan parallel to the winding axis, i.e. on the one hand, changing changing roll widths and secondly roles in different positions wrap.

A gripper 28, 29 is attached to each bracket 24, 25. The gripper 28, 29 is therefore together with the associated one Bock 24, 25 postponed. Each gripper 28, 29 has a piston-cylinder engine 30, 31, the lower End via a rotary drive 32, 37 with the bracket 24, 25 connected is. At the top of the piston-cylinder engine 30, 31, a head 33, 34 is arranged with which the gripper 28, 29 grasp and hold the roll core 5 can. The detection can be done, for example, by clamping the roll core 5 take place. But it is also possible that suction means not shown in the head are provided to suck the roll core 5.

With the help of the grippers 28, 29 it is possible for the the respective winding position provided roll core 5 to transport from the feed path 15 to the position where the bearing pins 19, 20, which are also called mandrels can be formed, retract into the roll core 5 can. Since the two grippers 28, 29 on the blocks 24, 25 are arranged, they are automatically in the Area of the axial ends of the roller core 5, so that the roller core 5 is supported there and the bearing pins 19, 20 retracted with high reliability can be.

2, the way will now be described, which a roller core 16 travels from the feed path 15 must to the corresponding bearing pin 19 (dashed shown) to arrive.

Fig. 2a shows the beginning of the transport. The gripper 28 has taken the roller core 16 with his head 33, the lies on the feed path 15 below the support roller 2.

A direct pivoting movement of the gripper 28 would not be possible because the head 33 is then on a trajectory 35 would run on which he collide with the backup roller 2 would.

For this reason, the head 33 with the roller core 16 first drawn in (Fig. 2b), the length of the gripper 28 so diminished. If the gripper 28 then one Performs pivoting movement, then the head 33 has one Movement path 36 past the support roller 2. On this Movement path he gets into that shown in Fig. 2c Position. So that the head 33 with the roller core 16 die Reach the desired position in relation to the bearing pin 19 can, the gripper 28 is extended and thus the roller core 16 raised, which is shown in Fig. 2d is.

The movement path of the head 33 is again in Fig. 3 shown schematically. It consists of two translational sections 38 that have a pivoting section 39 are connected. The backup roller 2 is shown in broken lines to show that the roller core 16 can be moved outside the support roller 2 is. The path of movement can be divided into two Realize degrees of freedom, namely by a linear Movement by the piston-cylinder assembly 30, 31 the gripper 28 can be accomplished, and by a pivoting movement caused by the rotary drive 32, 37 can be accomplished. Because the individual movement sections can run in succession, the Control can be kept very simple.

Claims (11)

Winding device for a slitter with one Back-up roller arrangement, several winding positions, in at least two winding position groups are arranged and each have a pair of axially displaceable Trestles with one bearing mandrel each for centric Have a winding roll with an essentially axially extending feed path for roll cores and with a device for distribution the roll cores on the individual winding positions, characterized in that in each winding position at least one gripper (30, 31) is arranged together with a goat (24, 25) is movable in the axial direction and a gripping head (33, 34), the gripping means for gripping and holding a roll core (5, 6, 16) and from the feed path (15) to the bearing mandrel (19, 20) is movable. Winding device according to claim 1, characterized in that the gripper (28, 29) on his trestle (24, 25) is attached. Winding device according to claim 1 or 2, characterized characterized in that each trestle (24, 25) has a gripper (28, 29). Winding device according to claim 3, characterized in that the two grippers (28, 29) on the mutually facing sides of the trestles (24, 25) one Pair are arranged. Winding device according to one of claims 1 to 4, characterized in that the feed path (15) below the support roller arrangement (2) is arranged and the bearing pins (19, 20) next to the backup roller assembly (2) are arranged. Winding device according to one of claims 1 to 5, characterized in that the head (33, 34) a non-linear trajectory (38, 39) around the outside Backup roller assembly (2) around. Winding device according to claim 6, characterized in that the trajectory (38, 39) by two Degrees of freedom in the movement of the head (33, 34) can be generated. Winding device according to claim 7, characterized in that the trajectory (38, 39) by a translatory portion (38) and by a Pivot portion (39) is formed. Winding device according to claim 8, characterized in that the translatory portion (38) temporally is decoupled from the swivel portion (39). Winding device according to claim 8 or 9, characterized characterized in that the translatory portion (38) through two sections in front of and behind the Pivot portion (39) is formed. Winding device according to one of claims 1 to 10, characterized in that at the beginning of the feed path (15) an adhesive applicator (17, 18) is arranged, the individual roll cores (16) depending on the intended Winding position group (11, 12) at a predetermined Provides peripheral portion with adhesive.

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