JPH05501099A - Device for widening the width of running web material, especially web paper - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Running web materials, especially sea urchins Device for expanding the width of paper Technical field The present invention extends the range of running web materials, in particular paper webs, according to the preamble of claim 1. It relates to a device for

Such widening devices fold a wide web of material guided via deflection rolls. To avoid the formation of seams or to keep a large number of individual webs guided side by side constant It is used to provide a mutual spacing of .

Therefore, it is necessary to wind up the individual web obtained after longitudinal cutting onto a winding roll. In the winding machine, a constant spacing between the long edges of the individual webs is required for problem-free winding. The individual webs after cutting in the longitudinal direction must be slightly expanded so that the stomach. In this case, it is necessary that the web be guided exactly parallel after it has been spread out. . The amount of expansion of the individual webs and the direction of travel depend on the curvature of the widening members and their mutual spacing. It is well known that web wrapping is angle dependent.

Conventional technology A width widening device of the above type is known from EP-PSOO 66527, with which has two widening members supported at a distance from each other in a common pivotable frame. It is. The desired mutual spacing of the individual webs is determined by the parameters of the web material (width, thickness, etc.) ) and to guarantee parallelism of the individual webs running out. Additionally, the curvature of each of the widening elements can be adjusted individually.

Therefore, the device shown is structurally complex and, in addition, it segment adjustment is extremely difficult to reproduce due to the large number of possible combinations. Ru.

Description of the invention The object of the invention is to provide a reproducible adjustment depending on the parameters of the web material. The goal is to find a width widening device of the above type that is possible using only node parameters. Ru.

This problem is solved by the features of claim 1.

The present invention is designed to vary the mutual spacing and wrap angle to adjust the desired expansion. Allows stepless swivel of the double width spreader using only one drive. Each tone at the same time During node movement, the state of the winding and the relative position of the curved planes are maintained, so For this purpose, the individual webs that emerge from the widening device run exactly parallel during each adjustment.

The dependent claims contain advantageous and particularly advantageous developments of the invention.

Brief description of the drawing The drawings are used to explain the invention on the basis of schematically illustrated embodiments.

Figure 1 schematically shows a side view of a width widening device according to the invention, and Figure 2 shows three different versions. This is a schematic representation of the working position.

Path to implementation of the invention The width spreading device shown in Figure 1 is supported in the frame of a machine for winding a paper web. There is. With this device, the individual web 1 obtained by longitudinal cutting is wound up. It is then wound into a roll. The individual webs are guided by guide rollers at the exit of the longitudinal cutting mechanism. Exists between roller 2 and support roll 3 (the take-up roll is supported by this during winding) do.

The width-expanding device is constructed in a known manner, with a roll-like, adjustable bend in the area. It is equipped with two width widening members 4.5 having a ratio of is arranged in a direction transverse to the running direction of the web, and on the web 1. Partial winding is thus possible with alternating running directions. Therefore, web 1 has a width It is guided firstly upwardly by the widening member 4 and then downwardly by the width widening member 5. It will be done.

While the individual webs 1 have a large lateral spacing from each other after being widened by the widening device, In order for the webs 1 to run parallel to each other again, the plane 6 of the web 1 to be inserted must be The widening member 4.5 is configured so that it is approximately parallel to the plane 7 of the web 1 and One is placed. For this purpose, the width expanding member 4.5 must be It is curved into an arc shape in one plane, and both curved planes extend parallel to each other. There is.

The amount of spreading of the individual webs 1 depends on the spacing of the widening devices 4.5 and the respective winding angle. Adjustable through. Parallel guidance of the running web 1 during adjustment is guaranteed. For this purpose, both curved planes and both web planes 6.7 are approximately plane with respect to each other. A widening element 4.5 is mounted in the frame of the winding machine.

This is achieved structurally as follows.

That is, the width expanding member 4.5 is supported on each quadrilateral link mechanism, and The link mechanisms are connected to each other via a transmission with a fixed transmission ratio. width The quadrilateral Q-shape mechanism to which the expansion member 4 is fixed is fixedly centered at the hinge point 8 within the machine frame. A drive lever 9 rotatably supported and a connecting piece 1 hinged thereto. 0 and a driven lever 11 that is hinged to the driven lever. It is supported at hinge points 12 within the frame. The width expanding member 4 is fixed to the connecting piece 10. and is fixed at a hinge point 13 between the drive lever 9 and the connecting piece 10.

Similarly, the quadrilateral link mechanism to which the width expanding member 5 is fixed is attached to the machine frame at the hinge point 14. It includes a drive lever 15 supported by, a connecting piece 16 and a driven lever 17, The driven lever 17 is fixed within the machine frame at a hinge point 18. The width expanding member 5 is a hinge It is suspended at a point 19 and fixed to a connecting piece 16.

The surface drive levers 9.15 are connected to each other via a transmission with a fixed transmission ratio. (e.g. via a circulating chain 20), each chain being connected to a drive lever. -9 or 15 is supported at the hinge point 8 or 14 of the machine frame fixation. It connects two gears that are fixedly connected to each other. The chain 20 is a surface drive rail. The bars 9.15 pivot in the same direction so that the widening members 4.5 approach each other. , and arranged so as to be movable away from each other, and coupled to the swing drive device. It is. Leverage ratio and fixed hinge points in double quadrilateral linkages 8.12 ．． The position 14.18 allows the surface drive lever 9.15 to be swiveled using a common drive. Although the mutual spacing and winding angle of the width-expanding members 4.5 change when the width-expanding members 4.5 are The planes of curvature of the parts 4, 5 are parallel and at an angle to the web plane 6.7. selected so that the degree is constant. Similarly, the angles of both windings are almost equal. The plane 6 of the incoming web 1 changes at different degrees, so that the plane 6 of the incoming web 1 is the plane 7 of the outgoing web 1. is parallel to

The widening member 4.5 is supported on both sides of the web 1 in a quadrilateral linkage and is shown in FIG. only one side is shown. Hinge points for fixing the machine frame on both sides 8.12.14 or as few as 18 (in each case, one pair is a uniform adjustment movement of the widening members on both sides of the web 1). are coupled to each other via a synchronized shaft to ensure movement. In the example, hinge point 8 is They are connected via a synchronous shaft 23. Both quadrilateral linkages or their connections are lockable, for which the curved plane of the widening member 4.5 runs in or out. fixed at any angle to the planes 6, 7 of the web, preferably parallel to these. be able to.

Summary book Devices for widening the width of running web material, especially web paper, are known and The roll has a curved widening member on the roll in the area, and the widening The lifting members are connected and pivotably supported within the machine frame with a mutual spacing between them.

Reproducible depending on web material parameters using only one adjustment parameter According to the invention, the width expanding members (4, 5) are arranged on each of the four sides in order to enable a wide adjustment. It is fixed to the connecting pieces (10, 16) of the quadrilateral link mechanism, and Both drive levers (9, 15) rotate in the same direction via transmission devices (20, 21, 22). are rotatably connected to each other.

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Claims (4)

[Claims] 1. A device for expanding the width of running web material (1), especially web paper, , two rolled and curved width widening members (4, 5) The width-expanding members are connected within the machine frame with mutual spacing and are supported for rotation. In the type shown above, the width expanding members (4, 5) are each a quadrilateral link. It is fixed to the connecting piece (10, 16) of the mechanism, and connects both drive levers of both quadrilateral link mechanisms. The bars (9, 15) can be rotated in the same direction via the transmission (20, 21, 22) Running web materials, especially web paper, characterized in that they are interconnected. A device for expanding the width. 2. claim, comprising a pivoting drive acting on the drive lever (9 or 15); The device according to item 1. 3. The width expanding member is supported on quadrilateral link mechanisms arranged on both sides of the web (1). and at least one pair (8) of the hinge points fixed to the machine frame of the drive lever (9) are synchronized. 3. Device according to claim 1, characterized in that they are connected to each other by an axis (23). 4. Plane of the web (1) into which the curved plane of the width widening members (4, 5) enters or exits (6,7), which can be fixed at any angle, preferably parallel to The device according to any one of items 1 to 3.