JPS6284828A - Straightening device for strip camber - Google Patents

Abstract

PURPOSE:To straighten a strip camber by providing a tension reducing device between the inlet side tension generating device and outlet side tension generat ing device and by adjusting the distance between both ends of a adjacent roll by moving the roll in parallel to the strip face. CONSTITUTION:In case of there existing the generation of a strip camber a roll C and a' are adjusted by moving them adequately by a positioning adjusting device. When the strip is fed in the arrow mark direction in this state, a tension is caused by the inlet side tension generating device 1, but the tension thereof is reduced by the tension reducing device 2 and the tension is received by the outlet side tension generating device 3 again. The descrepancy in the length of the strip both side edges is thus corrected.

Description

[Detailed Description of the Invention] (Related Industrial Field) Generally, camber distortion in the longitudinal direction exists in plate materials after rolling, and this is often found in large plates when cutting or slitting this type of plate material into products. Unavoidable shape defects may occur, which may cause various problems in subsequent processes. The present invention relates to a method and apparatus for correcting strip camber after rolling a plate material.

(Prior Art) In order to prevent strip camber from occurring after rolling, shape correction means have conventionally been devised in the rolling technique itself. However, although there is a limit to how this can be corrected, the current situation is that it is left as is without further investigation.

(Problems to be Solved by the Invention) It is an object of the present invention to provide a strip without camber after rolling by a simple method.

(Means for solving the problem) An inlet tension generator and an outlet tension generator are provided, a tension reducing device is provided between them, and both adjacent rolls of the inlet tension generator and the outlet tension generator are installed. Alternatively, by moving one of the rolls parallel to the strip surface, the distance between the ends of the adjacent rolls can be adjusted, and the strip being stretched is given plastic deformation to correct the strip camber. I did it like that.

(Example) FIG. 1 shows a correction device according to the present invention. 1 is a tension generator on the inlet side of the strip S, and in the example shown in the figure, there are three rollers a and b.
, a. Reference numeral 2 denotes a tension lowering device disposed between the inlet tension generator 1 and the outlet tension generator 3, and although a tension leveler consisting of a plurality of rollers is used in FIG. 1, a tension annealer may also be used. This tension reducing device reduces the tension to a level of 5-60% of the yield stress of the strip. The exit tension generating device 3 includes three rollers a'.

It consists of b' and c'.

The inlet and outlet tension generators 1.3 will be explained with reference to FIG. Rolls C and a on the high tension T side of the tension generator
' is moved parallel to the strip S from the position C or a perpendicular to the longitudinal direction of the strip S to the left or right position Q2+c3 or a21a, respectively, by a distance d from the wall side of the roll. The distance between rolls a and a' can be adjusted.

Referring to FIGS. 3 and 4, an example of a roll moving device 6 is shown. For example, a swing pin 5 is rotatably inserted into a moving block 6 at the lower part of a bearing 4 at both ends of a roll a. Two parallel holes 7 and 8 are bored in the moving block 6,
Guide rods 9, 10 are respectively passed through the holes.

The guide rod 9.10 is fixed at both ends to the end piece 11.12.

Reference numeral 13 denotes, for example, a jack type positioning adjustment device, which is connected to the moving block 6 via a rod 14. 15
is a handle, and when it is turned, a jack in the positioning adjustment device 13, for example, turns.

The moving block 6 can be moved along the guide rods 9 and 10 by moving the rod 14 in and out. Furthermore, the second
In the figure, the positioning adjustment device is provided only on one side of the roll, but it may be provided on both sides of the roll as shown in FIG.

Further, the positioning adjustment may be performed using either the entry side or exit side roll.

(Function) If strip camber occurs, move the rolls C and a' appropriately using the positioning adjustment device 13 as shown in FIG.
s Keep it in order. When the strip is fed in the direction of the arrow in this state, tension is generated in the tension generator 1 on the entry side. However, the tension is lowered by the tension reducing device 2, and tension is applied again by the outlet tension generating device 3.

Since strip camber occurs because the lengths of both side edges of the strip S are different, the distance between the rolls c and a' is adjusted by moving the rolls as appropriate. The difference in length between both side edges of the strip is corrected by repeatedly generating tension at , lowering the tension at the tension lowering device 2 , and generating tension again at the outlet tension generating device 3 .

(Effect) By varying the distance between the side edges of adjacent rolls of the tension generators on the entry and exit sides, and by providing a tension reducing device between both tension generators, tension can be generated, reduced, and The strip camber is corrected by repeatedly generating tension.

According to this, it has become possible to correct the strip camber using a simple device in which the distance between the rolls is changed and plastic deformation is repeated between the rolls.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle of a strip camber generator. FIG. 2 shows the roll movement state of the input/output side tension generator. Figure 3 shows the roll positioning and adjusting device. FIG. 4 is a view taken along the line IV-IV in FIG. 3. In the figure; S strips a, b, c rolls a', b', of the inlet tension generator;
c' Roll of outlet tension generator 1 Inlet tension generator 2 Tension lowering device 3 Outlet tension generator 4 Bearing 5 Swivel pin 6 Moving block 7.8 Hole
9,1o Guide rod 11.12 End member 13 Positioning adjustment device 14 Rod 15 Handle and above Applicant Sumitomo Heavy Industries, Ltd. sub-agent Patent attorney Ohashi Male lineage 1 Figure 2

Claims (1)

[Scope of Claims] [1] A tension reducing device is provided between the inlet tension generator and the outlet tension generator, and the rolls (c and a) adjacent to each other in the inlet tension generator and the outlet tension generator are A strip camber characterized in that the distance between both ends of the mutually adjacent rolls (c and a') can be adjusted by moving both or one of the rolls (c and a') in parallel to the strip surface. orthodontic device. [2] 5 of the yield stress of the strip by a tension reducing device
Claims that are limited to a level of ~60% [
1] The strip camber correction device described in [1].