Patent ID: 6471153
Filing Date: 2002-10-29
Classification: B21B,B21C,B65H,C21D

Abstract:
An apparatus for controlling vibration of sheet steel comprising an apparatus for controlling vibration of a steel sheet being processed in a steel processing line, comprising:an electromagnet for generating magnetic forces acting at right angles on the steel sheet; a sensor for detecting separation distances between the steel sheet and said electromagnet; a controller for controlling a flow of driving current through said electromagnet according to separation distances detected by said sensor, said controller including a control circuit whose gain is adjusted for controlling said driving current in accordance with information related to the steel sheet, including thickness data, running speeds, joint locations, sheet widths and line tension data at the time the controlling is performed wherein said controller further comprises a judging circuit for judging whether a steel sheet is present within a given range of a detected distance and which operates to turn off control of said electromagnet corresponding to said sensor not detecting presence of a steel sheet.