| 摘要 |
PURPOSE:To actuate a side trimming device to perform its follow-up motion in good accuracy even when a plate material width is smaller than its preset value, by detecting the plate width of a strip-shaped plate material, before it is cut, and calculating a difference from the preset plate width so as to move a trimming tool, in the case of a processing line for a hot rolled steel strip or the like. CONSTITUTION:A width BB of a steel strip 14, before it is cut, is detected by a plate width detector 34. The actually measured plate width BB is input to a width margin arithmetic unit 36. A width margin, which is obtained in the unit 36 from a difference between a preset plate width AA and the plate width BB, is compared with a limit side trimming margin, and a trimmer last stage arithmetic unit 38 is started. In this way, a shift driving gear 32 and a turn driving gear 30 are started via speed controllers 40, 42, and a side trimming device 10 performs trimming by its upper and bottom trimming tools of the steel strip 14 in good accuracy with no side out trimming and short side trimming.
|
