| 摘要 |
PURPOSE:To prevent a steel strip trimming margin from being defectively trimmed by storing the trimming margin detected by the width detector at the steel strip infeed side of a side trimmer and by starting and stopping the side trimmer or a cutting device according to the trimming margin. CONSTITUTION:If the steel strip trimming margin detected by a width detector 5 has an enough broad width S1 to be trimmed by a side trimmer 2, the trimming margin is trimmed by the side trimmer 2 according to the command of a controller 6. On the other hand, if the width detector 5 detects a trimming margin S2 impossible to be trimmed by the side trimmer 2, the controller 6 commands a cutting device 4 to start the cutting by a milling cutter or the like and also commands the side trimmer 2 to stop the trimming. And, since the cutting device 4 is followed by the side trimmer 2, a remainder scrap section and the section defectively trimmed can be removed completely by the cutting device 4. |
