WO2013056758A1

WO2013056758A1 - Two-drum winder

Info

Publication number: WO2013056758A1
Application number: PCT/EP2012/003288
Authority: WO
Inventors: Andreas Koronai; Michael KÜHNHOLD
Original assignee: Andritz Küsters Gmbh
Priority date: 2011-10-18
Filing date: 2012-08-02
Publication date: 2013-04-25
Also published as: DE102011116308A1; EP2768753A1

Abstract

The invention relates to a two-drum winder for winding material to be wound, said material being fed in a divided manner, onto multiple winding cores, comprising two axially parallel support rollers (1, 2), which form a bearing (3) for each roll (4) formed by a winding core and the material to be wound and one supporting roller (2) of which is arranged in an adjustable manner with respect to the other supporting roller (1) by means of a movement, and comprising guiding devices (15) for laterally fixing the multiple winding cores, each guiding device being connected to a machine element (21) in order to carry out a movement which is guided in a forced manner, wherein the element transmits a movement variable of the adjustment of the at least one adjustable supporting roller (2), as an adjustment mechanism, to the guiding device (15). The two-drum winder also comprise a loading roller (15) which is guided on the guiding devices (15) and which presses the roll (4) onto the bearing (3) formed by the supporting rollers (1, 2) with an adjustable force. The loading roller (2) can be loaded via a cross-beam (9) which is movably arranged on a horizontal guide (32) at each end. The horizontal guides (32) are arranged on slide plates (33) at both sides, said slide plates being mounted in guides (34) in a height-adjustable manner and being coupled so as to be synchronized.

Description

Two drum winder

The invention relates to a Doppeltragwalzenroller according to the preamble of claim 1.

Such a double carrier roller is known from EP 0 640 544 B1. By progressively lowering the one support roller in dependence on the increasing diameter of the coil, an axial displacement of the coil is made possible along a predetermined, substantially vertically or only slightly inclined movement line with respect to the vertical. The winding station consists on the one hand of the drivable, mutually parallel support rollers and the other axis displacement means for axially parallel displacement of the seen in the web running second support roller with respect to the axis of the web seen in the direction of travel first support roller and lowering the second support roller depending on the increasing diameter of the webs to be produced. The support rollers basically have a different diameter, and their axes lie during Wickeins basically in different levels horizontal planes, the axis of the second support roller is located during the Wickeins higher than the axis of the first support roller.

The pivotable second support roller allows a shift of the distribution of forces with increasing winding diameter towards the second support roller, which can be influenced during the winding process on the winding hardness, which is otherwise determined essentially by the support load on the first support roller. The disadvantage is that this displacement process can only be used in geometrically narrow limits. A further disadvantage is that the unevenness of the web to be wound, which influences the winding quality, does not find sufficient consideration in terms of length, width and thickness.

From DE 296 10 197 U1 a Doppeltragwalzenroller is known in which the first carrier roll in the direction of web travel relative to the second support roller during the winding process is lowered lowered. A per se known loading roller is fixed relative to a movable approximately parallel to the support rollers over the entire width of the machine traverse. The traverse together with the loading roller is liftable in a conventional manner by means of pivotally mounted on the machine frame about a pivot axis support arms and acting on the support arms drive means in response to the change in diameter of the roll to be wound and lowered again for a new winding process.

To optimize the winding structure, the traverse is pivotable about a support roller parallel first axis, and a hinged to the traverse around a support roller parallel second link causes a compulsory pivoting of the traverse with the loading roller about the first axis when the crossbar with the loading roller in adaptation to the increasing roll diameter is raised, so that changes the direction of action of the loading roller on the roll. The load distribution of the loading roller on the first and the second Carrier roller can be changed with increasing roller diameter in the sense of achieving an optimized winding structure. As a result of the handlebar arrangement, as the roller diameter increases, the center point curve of the loading roller describes a comparatively flat basic movement line.

The object of the invention is therefore to provide a Doppeltragwalzenroller for winding cut supplied winding material on several hubs with two axially parallel support rollers, which improves the quality of the winding.

This object is solved by the features of claim 1.

As a result, a Doppeltragwalzenroller is provided in which the adjustment of the at least one support roller for controlling the Auflagelastverteilung on the two support rollers is forcibly transmitted through the rollers with increasing roller diameter on the guide for laterally fixing the plurality of hubs. The leadership of the roll inclination follows an adjustment mechanism, which is dependent on a displacement of the at least one adjustable support roller. The roll quality is thereby increased because the support on the adjustable support roller is optimized.

A loading roller applied from above supports the winding process with changing forces. The loading roller ensures in the initial phase of the winding for the necessary bearing force. With increasing roller weight, the load roller increasingly assumes fixing and damping tasks. The guide according to the invention of the loading roller by means of a horizontally arranged guide bar improves the positioning of the loading roller, wherein the construction can be stably formed via a synchronization and the traction that can be formed thereby.

Preferably, the loading roller is mechanically positively guided, so that it can load exactly in the bisector at each time of the winding process. With a lowering or raising of the at least one support roller and with this movement mechanically tracked load roller can be disturbed as quickly as possible without speed reduction and thus without loss of production in the shortest possible time a vibration. Vibrations caused by the discontinuity of a paper roll can thus be avoided.

Further embodiments of the invention are described in the following description and the dependent claims.

The invention will be explained in more detail with reference to the embodiment shown in the accompanying drawings.

1a to 1c show schematically a support roller structure of a double carrier roller as a schematic representation in the frontal view of the carrier rollers with the at least one adjustable carrier roller in different displacement positions,

2a to 2c show schematically a Doppeltragwalzenroller with the support roller structure of FIG. 1a to 1c,

3 schematically shows a perspective view of the partial area of the double carrier roller according to FIGS. 2a to 2c from a web inlet side,

4 shows the region X of FIG. 3 in an enlarged view,

Fig. 5 shows schematically a perspective view of the Doppeltragwalzenrollers of FIG. 2a to 2c from a web exit side.

The invention relates to a Doppeltragwalzenroller as part of a slitter. The function of the slitter is to assemble a wound on a parent roll web in width and diameter for further refining process. The parent roll presented to the slitter is unwound under defined tensile forces and separated via cutting units in equal or different width webs. These are wound up into paper rolls within the reel. As shown in Fig. 1a to Fig. 1c, a double carrier roller for winding of cut fed winding material on several hubs a support roller construction with two axially parallel support rollers 1, 2, which form a support 3 in their gusset for each of winding core and winding material forming Roller 4. The winding material is a web, preferably of paper, cardboard, paperboard, tissue or other, in particular synthetic material. The hubs are preferably cores made of a selectable material such as cardboard or plastic. The rollers 4 are axially mounted rollers 4, which are arranged longitudinally of roller axes 7, 8 of the support rollers 1, 2 arranged in the support 3. About guide means 15, the plurality of hubs are fixed laterally. In each case a guide device 15 is provided at a lateral end of the Doppeltragwalzenrollers, as shown in FIGS. 3 and 5 show. The guide means 15 preferably comprise lateral guide elements in the form of sleeves 20, which engage as a work spindle in the end-side winding core of the plurality of winding cores.

At least one of the support rollers 1, 2, here the support roller 2, which is arranged on the web outlet side, is adjustable relative to the other support roller 1. The axle displacement device 6, which is provided on both sides of the end of the support rollers 1, 2, for example, a pivot bearing 16 with a stationary pivot axis 17. A support roller bearing 18 of the support roller 2 for the Roller shaft 7 is arranged on the pivot bearing 16 at a distance from the pivot axis 17. When pivoting the pivot bearing 16, the support roller 2 is raised or lowered relative to the support roller 1 and also more or less spaced therefrom. Depending on the arrangement of the pivot point of the pivot axis 17 between the two support rollers 1, 2 and the spacing of the support roller bearing 18 to the pivot axis, the spatial orientation of the displacement movement of the support rollers 2 relative to the support roller 1 can be controlled. By means of a drive train 19, a measure or the size of the displacement of the at least one adjustable support roller 2 with respect to here stationary support roller 1 are made. The amount of movement of the adjustment of the at least one adjustable support roller 2 can be determined by a selectable support force distribution between the two support rollers 1, 2. The Auflagkraft- distribution can be selected depending on the winding material.

The guide means 15 are connected to the execution of a positively guided movement to a respective machine element 21, which transmits a movement amount of the adjustment of the at least one adjustable support roller 2 as a dependent adjusting mechanism to the guide means 15.

The guide devices 15 preferably comprise pivotable quill boxes 22 for the positive guidance. It is particularly preferred that the pivotable quill boxes 22 and the displaceable support roller 2 are pivotable about a common pivot point of a pivot axis 17.

The Quill boxes 22 preferably each have a slotted guide 23, in which a quill carriage 24 is guided for the respective quill 20.

The machine element 21 is preferably a coupling or link mechanism with a coupling plate 25 and coupling rods 26, 27. The coupling rods 26, 27 are articulated via joints on the coupling plate 25. The coupling rod 26 has a fixed bearing 28, while the coupling rod 27 acts as a link for the guide means 15 on the pivot bearing 16. Characterized in that the coupling plate 25 is guided as a coupling slide in a slotted guide 29 of the Pinolenkästen 22 is transmitted through the machine element 21 in the form of the coupling or steering gear provided here a mechanical forced operation on Quill boxes 22 and guided therein Quill carriage 24 of the sleeves 20.

The adjustment of the at least one carrier roller 2 during winding is carried out by means of the axial displacement device 6 respective Quill box 22, which can not perform their own movement, but only a predetermined by the machine element 21 movement. The adjustment is controllable by the axis displacement device 6, by a selectable axially parallel displacement of the axis 7 of the at least one support roller 2 to the axis 8 of the other support roller. 1

As a result of the machine element 21, the support points of the roller 4 move apart on the support rollers 1, 2, as the sequence of FIGS. 1a to 1c shows.

The two support rollers 1, 2 are preferably made of two parallel to each other, largely rigid and driven support rollers 1, 2. The support rollers 1, 2 are also preferably both rotationally driven. The drive of one of the support rollers 1, 2 is sufficient, however. If both support rollers 1, 2 are driven, the adjusting movement is carried out on the support roller 1, 2, which is preferably torque-controlled. This is here the support roller 2. Thus, neither the web speed nor the web tension control are disturbed. The adjustable support roller 2 has a drive whose torque is preferably adjustable in dependence on their adjustment.

The adjustable support roller 2 is here the web outlet side support roller 2. Alternatively or additionally, the web inlet side support roller 1 is adjustable formed.

As shown in FIGS. 2 a to 2 c and 3 to 5, a loading roller 5 is also guided on the guide devices 15. By means of the loading roller 5, the roller 4 is pressed with adjustable force to the support 3 formed by the support rollers 1, 2. The guide means 15 guide the loading roller 5 for adjusting the at least one support roller 2 in such a way that the load roller 5 preferably loads substantially in the bisector of the bearing force distribution between the support rollers 1, 2. For this purpose, the loading roller 5 is forcibly guided mechanically via the machine element 21 and the respective quill box 22 so that it is loaded at each time of the winding process, preferably exactly in the bisecting line, as the sequence of a winding process according to FIGS. 2a to 2c shows by way of example. To this end, the loading roller 5 has guide carriages 30 which are guided in a slot of the respective quill box 22.

The loading roller 5 presses the roller 4 with adjustable force to the support 3 formed by the support rollers 1, 2. Preferably, for example, from above loaded load roller 5 with changing forces supports the winding process, to which a loading device is provided.

The loading roller 5 can be loaded via a cross member 9, which is displaceably disposed on a horizontal guide 32. The horizontal guides 32 are arranged on both sides of carriage plates 33, which are mounted vertically adjustable in guides 34 and coupled for synchronization. The synchronization preferably takes place in each case via a transverse synchronous shaft 35. The horizontal guides 32 of both machine sides are preferably coupled via at least one longitudinal synchronizing shaft 36. As shown in Fig. 3 and Fig. 4, a number of load cells 37 along the extension of the loading roller 5 between this and the traverse 9 for determining the line force acting on the roller 4 are arranged. For height adjustment of the carriage plates 33, a motor 38 may be provided. At the respective transverse synchronous shaft 35 pinion 39 may be provided, which may be in meshing engagement with a rack 41.

Preferably, loading / unloading cylinders 31 are provided, which engage the horizontal guide 32 in order to actuate the traverse 9, which acts on the loading roller 5. The additional guidance of the loading roller 5 by the guide carriage 30 allows an asymmetrical bearing force distribution on the roller 4th A necessary winding hardness can be determined by a goods tension on the web inlet-side support roller, here the support roller 1, ruling support force by a torque on the adjustable support roller 2 and by the support geometry in the support points of a roller 4 on the support rollers 1, 2. The loading roller 5 ensures, especially in the initial phase of the winding for a bearing force. With increasing roll weight, the loading roller 5 then preferably assumes increasingly fixation and damping tasks. The fact that the adjustment can be carried out on the moment-controlled support roller 2, no harmful influence on the web tension control or the cruise control is taken.

As stated above, the Quill boxes 22 are mechanically forced out about the machine element 21 in the form of a lever mechanism about a common pivot point of the pivot axis 17. As a result, quill 20 is not subject to travel limitation, and a lowering travel is significantly increased. Same winding hardness over the roller cross section is the result.

The bearing force acting between the web-entry-side support roller 1 and the roller 4 is an essential determining factor for the winding hardness forming in the roller 4. With increasing roll diameter, the force effect of the loading roller 5 is replaced by the weight of the roller 4 and exceeded to a large extent the diameter structure significantly. Relief of the bearing force on the first support roller 1 can not be done by default. By raising or lowering the second support roller 2, the parallelogram of forces is displaced in such a way that the bearing forces on the first support roller 1 are reduced by lowering and thus the forces forming the winding hardness can be influenced significantly longer. By the mechanical coupling gear is independent of the roll diameter of the positions of the adjustable support roller 2 ensures that the loading roller 5 rests substantially centrally in the bisector on the roller 4. This ensures for each position and diameter of the roller 4 a geometrically ideal division of the action and Reaction forces and thus a stable guidance of the roll 4. Negative influences on the roll structure and paper quality due to changing support positions of the load roll are avoided. By preferably fixing the pivotable quill box 22 in the pivot point of the adjustable support roller 2, the sleeves 20 essentially require only one degree of freedom in the vertical direction. Horizontal paths are only necessary to a limited degree to compensate for winding inaccuracies. Furthermore, the force vector of the support load on the web inlet-side support roller 1 can be reduced to below 50%. This leads in particular to large roll diameters to reduce the winding hardness and the elongation in the support point of the web inlet-side support roller 1. With increasing roll diameter is often the well-known role swings in the horizontal direction to light. This rocking motion can also be strongly counteracted, since at the same time the span between the support rollers 1, 2 (center distance) is increased with a reduction of the adjustable support roller 2, resulting in a more stable state of the roles.

The fixed arrangement of the pivot axis 17 and the bearing 28 can be made via a machine frame 40 or on a ground foundation.

Claims

claims

Doppeltragwalzenroller for winding of severed supplied winding material on a plurality of hubs with two axially parallel support rollers (1, 2) forming a support (3) for each of winding core and winding material forming role (4), and of which a support roller (2) relative to the Another support roller (1) is arranged displaceably by displacing, with guide means (15) for laterally fixing the plurality of hubs, which are connected to the execution of a positively guided movement to each machine element (21) having a movement amount of the adjustment of the at least one adjustable support roller (2) as Nachstellmechanismus on the guide means (15) transmits, and with a guided on the guide means (15) loading roller (5), the roller (4) with adjustable force to the of the support rollers (1, 2) formed Auflager ( 3) presses, characterized in that the loading roller (5) via one end in each case on a horizon Alführung (32) displaceably arranged traverse (9) is resilient, and the horizontal guides (32) on both sides of carriage plates (33) are arranged, which are mounted vertically adjustable in guides (34) and coupled for synchronization.

Doppeltragwalzenroller according to claim 1, characterized in that the synchronization takes place via a respective cross-synchronous shaft (35).

Doppeltragwalzenroller according to claim 1 or 2, characterized in that the horizontal guides (32) of both sides of the machine via at least one longitudinal synchronous shaft (36) are coupled.

Doppeltragwalzenroller according to one of claims 1 to 3, characterized in that a number of load cells (37) along the extension of the loading roller (5) between this and the traverse (9) for determining the force acting on the roller (4) line force are arranged.

5. Doppeltragwalzenroller according to one of claims 1 to 4, characterized in that the guide means (15) comprise pivotable Quill boxes (22).

6. Doppeltragwalzenroller according to claim 5, characterized in that the pivotable Quill boxes (22) and the displaceable support roller (2) about a common pivot axis (17) are adjustable.

7. Doppeltragwalzenroller according to one of claims 1 to 6, characterized in that the movement amount of the adjustment of the at least one adjustable support roller (2) is determined by a selectable pad force distribution between the two support rollers (1, 2).

8. Doppeltragwalzenroller according to claim 7, characterized in that the Auflagenkraftverteilung is chosen depending on the winding material.

9. Doppeltragwalzenroller according to claim 8, characterized in that the guide carriage (30) track the loading roller (5) for adjusting the at least one support roller (2) such that the loading roller (5) substantially in the bisector of the contact force distribution between the support rollers ( 1, 2) charged.

10. Doppeltragwalzenroller according to one of claims 1 to 9, characterized in that the machine element (21) is a coupling or link mechanism.

11. Doppeltragwalzenroller according to one of claims 1 to 10, characterized in that the guide device (15) pivotable lateral Quill boxes (22) with a slide guide for a guide carriage (30) of the loading roller (5) and a sleeve carriage (24), comprising a Quill (20).

12. Doppeltragwalzenroller according to claim 11, characterized in that the coupling or link mechanism has a coupling slide (25) which is guided in a slotted guide (29) of the respective quill box (22).

13. Doppeltragwalzenroller according to one of claims 1 to 12, characterized in that both support rollers (1, 2) are driven.

14. Doppeltragwalzenroller according to one of claims 1 to 13, characterized in that the adjustable support roller (2) has a drive whose torque in dependence of the adjustment of the support roller (2) is adjustable.