Cluster type multistage rolling mill comprising roll offset apparatus

Abstract

The invention provides a cluster type multistage rolling mill. The inventive cluster type multistage rolling mill is a structure including a work roll for rolling mill bar, an intermediate roll for supporting the work roll and a support roll for supporting the intermediate roll. The cluster type multistage rolling mill has a roll bias apparatus making the support roll to shift along the horizontal direction in order that the work roll can move along the horizontal direction extending along the rolling direction of the mill bar. Through such structure, bending of the mill bar panel after rolling is restrained as best as possible when the cluster type multistage rolling mill is used to roll the mill bar to produce thin steel plate.

Description

Technical field [0001] The present invention relates to a multi-roller multi-stage rolling mill equipped with a roll deflection mechanism that moves work rolls in the horizontal direction. Background technique [0002] As is known, a multi-stage rolling mill is used for rolling rolled materials such as foil materials. As a multi-stage rolling mill, a "multi-roller type multi-stage rolling mill" is generally used in which an intermediate roller supporting a work roll and a back-up roller supporting an intermediate roller fan out like a bunch of grapes. As such a multi-roll multi-stage rolling mill, there are 6-stage, 12-stage, 14-stage, and 20-stage structures (see, for example, Japanese Patent Publication No. 7-12483). [0003] When a rolled material is rolled using a multi-stage rolling mill disclosed in Japanese Patent Publication No. 7-12483, the end of the rolled material in the rolling direction (longitudinal direction) may be directed upward or downward on the exit si...

AI Technical Summary

Problems solved by technology

[0004] Such sheet bending in the longitudinal direction or sheet bending in the width direction (hereinafter referred to as "sheet bending") also occurs in rolled materials made of a single material such as stainless steel, but in rolled materials with special-shaped cross-sections or In a laminated material in which two or more different materials are laminated in the thickness direction, it often becomes conspicuous and becomes a problem

[0005] However, the conventional multi-roll type multi-stage rolling mill disclosed in Japanese Patent Application Publication No. 7-12483 does not solve the above-mentioned plate bending.

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