FI52561C - FOERFARANDE OCH ANORDNING FOER AXELLOES UPPRULLNING AV I BANOR FOERELIGGANDE MATERIAL. - Google Patents

Description

• jäSr * \ rB1 m, ADVERTISEMENT γορμ

JST · 11 (11) UTLÄCGNINCSSKRIFT

(51) "Kv.lk. • / Int.CI. * B 65 H 17/00 FINNISH — FI N LA ND (21) P * t * nttlh» k * mut— Ptttnuntöknlng 3122/71 (22) Hakamlspllvl — Aniftknlngtdtg 02.11.71 (23) Alkupllvl — Glltighatidag 02 · 11 »71

Patent · J. raklstarihajlltus W .............. 11.06.72

Patent · odt rafittarttjrralsan Μ ^ £ Ϊ !! ΪΧ 30.06.77 (32) (33) (31) Privilege claimed— Begird prlorltet 10 · 12 · 70

Federal Republic of Germany (DT) P 2060758.3 (71) Jagenberg-Werke AQ, Dlisseldorf, Federal Republic of Germany (DT) (72) Rolf Meyer, Brinkroannstraese 21, 4 Dlisseldorf, Herbert Schönme. 12, Dlisseldorf, GermanyFederal Republic-Förbundsrepubliken Tyskland (DT) (7 * 0 Oy Kolster Ab (5 * 0 Method and apparatus for winding web-shaped material axelittcmakei - Förfarande och anordning för axellöe upprullning av i banor föreliggande material

The invention relates to a method for axially winding a web-shaped material, such as paper or the like, by means of two winding shafts diametrically opposed to each other on a support roll and one or more movable pressing rollers delimiting the circumferential surface of the roll, as well as an apparatus for carrying out the method.

For the technically sound further processing of the material web following the roll cutting and rolling step, it is necessary that all rolls rolled at one time have a uniform hardness over their entire working width, so that wrinkles, tears or similar material do not form in the widthwise parts of the roll.

Processing methods are known in which there is a risk that the rolls will bend or deform more or less depending on the diameter and width of the roll. This deviation from the desired cylindrical shape of the roller is caused by the compressive pressure, which acts on the support debt and in the plane defined by the soil axis and is generated on the contact wire of the two rotating bodies involved. On the other hand, the self-weight of the roller causes a dependence on it, which forms an angle with the deformation caused by the compression pressure, and thus results in a deformation of the roller in two planes. An unfavorable deflection or suspension is caused by the axial endless bearing of the roller, i. that there are no supporting auxiliaries and thus the rolling takes place mainly without undersupport. In order to influence the hardness of the roller, a force acting in the direction of the support roller is applied to the roller bearings, by which the roller is pressed against the support roller and in this way it is given a uniform line pressure. New because the roller is very flexible in its initial stage, the axle load cannot be evenly distributed over the entire width of the roller, so the edge zones of the roller are loaded more strongly than its central area. In this case, the roll deforms under compressive pressure with a point load corresponding to the bending line of the rolled stress at its edges.

As a result, the edge zones of the roll are rolled considerably harder than the rest of it, resulting in corrugation and wrinkling, and moreover, the final diameter of the roll is not the same across the entire width of the roll.

The object of the invention is to wind rollers having equal hardness over the entire working width.

According to the invention, this object is solved by giving the roll at its initial stage such a characteristic stability (rigidity) that the rolling can be continued without supporting aids and can be completed by obtaining a uniform hardness of the roll. The rolling started on the simultaneous radial circumferential and axial pallet is continued without reaching the circumferential load support after reaching a certain diameter distribution, and the remaining axle load is changed depending on the diameter. For this purpose, a pair of press support rollers providing a radial circumferential pressure are arranged to be taken away from the movement area of the roller at the free end of the pivot lever. The pivot center of the pivot lever is positioned so that the compression directions of the individual press rolls intersect at each stage of the roll in a plane defined by the axis of the support roll and the axis of the roll formed.

The advantages achieved by the invention are in particular that only the initial part of the roll to be formed is wound on the flexible core per se using temporary, additional compression generated by the press roll until the roll has obtained The boulder can now evenly distribute the compression pressure introduced through its bearing points towards the support roller, which can be made effective without aids. Even the dependence caused by the constantly increasing unladen weight of the roll can now be limited by the solidly wound core of the roll, even if no support is provided against the unladen weight.

Another advantage of the hardening of the core is manifested during the transport and further processing of the rollers in various subsequent processing machines, so that the sleeves retain their shape, as they cannot be easily compressed by impact loading, and the braking torque transmitted to the roll is reliably transmitted.

An embodiment of the invention will now be described in more detail by means of a drawing, joeea 5 52561 Fig. 1 shows a side view of a roll cutting and rewinding machine at the beginning of rolling, Fig. 2 shows the same side view of the machine after raising the swing arms, Fig. 3 shows a pair of press rolls on a larger scale and Fig. 4 shows a pair of press rolls

The web of material 1 is pulled from the storage roll 2 and passed through the guide rollers 3, 4 and 5 and further through a cross-section of the lower blades 6 and the upper blades 7 to a support roll Θ, from which it is alternately distributed longitudinally to both winding stations 9 and 10, respectively. the material divided against the web 1 "'of one sub-web 1' or ln, is placed on the bearings 13 or 14 and pressed against the support roll Θ with an agency (not shown) · a pair of press rollers 19 or 20 mounted on the joint 13 or 16 of the pivot lever 17 or 1Θ are located in the center 22 on the circumference · This avoids any deformation of the roller 21 or 22 which could be caused by the axle weight transmitted by the bearing carriages 13 or 14 ·

In order to avoid oversizing the geometric and thus the force acting on the roller core 21 or 22 as a result of the combined action of the direct guide 29 or 30 and the pivoting movement of the pivot lever 17 or 18, the press roll pair 19 or 20 must be pivotally mounted on pivot lever 17 or 18. 18 fixed bolt 33 (Fig. 3) »projecting into the slot 34 of the bearing plate 33. This limitation is based on the fact that if the roller core 21 or 22 is distorted or deformed in an indeterminate direction with the bearing plate 33 a very large turning area, the pair of press rollers 19 or 20 would follow the distortion and thus lose the initial originally intended support effect ·

In order for the press roll pair 19 or 20 to always be in its most efficient position, i.e. in the middle of the winding sleeve 11 or 12, the associated pivot arm 17 or 18 is suspended laterally displaceably on the rotary guide 23 or 24 · The pivot lever 17 or 18 is positioned so that a pair of press rollers 19 or 20 can follow the ever-increasing diameter of the roll 23 or 26 in their domain. time on the circumference of the roller 23 or 26 · When the roller 23 or 26 has reached a sufficiently high stiffness, the pivot arm 17 or 18 with its pairs of pressure rollers 19 or 20 is pivoted out of the roller movement area around the rotating center guide 23 or 24 · The roller 23 or 26 continues to rewind with the lever shown, with an ever-decreasing shaft load against the support roller 8 until the final diameter 27 or 28 is reached, and the carriage 13 or 14 is in its outermost position on the guide 29 or 30. After mounting the finished rollers 31 or 32 and attaching new sleeves 31 and 32, next scroll at the same time below.

Claims (4)

A method for winding a web-shaped material, such as paper or the like, axially by means of two winding tongues diametrically opposed to the support roll and one or more movable pressing rollers adjoining the circumferential surface of the roll to be formed, characterized in that the simultaneous radial circumferential and axial material the started rolling is continued completely without a circumferential load when the specified roller diameter is reached and the remaining roller shaft pressure is changed depending on the diameter. Device for carrying out the method according to claim 1, characterized in that the pair of press rollers (19 or 20) providing a radial circumferential pressure are arranged to be moved away from the movement area of the roller (27 or 28) at the free end of the pivot lever (17 or 1B). Device according to Claim 2, characterized in that the pair of pressure rollers (19 or 20) are articulated to the free end of the pivot lever (17 or 18). Device according to Claims 2 and 3, characterized in that the pivot center (23 or 24) of the pivot lever (17 or 18) is arranged such that the compression directions of the individual compression rollers (19, 19 'or 20, 20') intersect at each stage of the winding. , which is determined by the axis of the support roll and the axis of the roll to be wound.