| 摘要 |
PURPOSE:To make the execution of welding of sheet bars possible without moving a welding machine and to reduce the equipment costs of a continuous rolling device in the stage of continuous rolling of sheet bars by interposing a looper between the welding machine for the sheet bars and finishing mills. CONSTITUTION:A sheet bar 2 rolled with a roughing mill 1 is coiled in a coil box 3 and the preceding end of the sheet bar 5 which is uncoiled and removed from a coil 4 is cut with a shear 7 to trim the shape of the end part. When the succeeding end part of the preceding sheet bar 5' comes near the shear 7, the looper rolls of a looper 11 are moved upward to loop the sheet bar. The succeeding end of the sheet bar is cut with the shear 7 to trim the shape of the end part. In the stage of welding the succeeding end of the preceding bar 5' and the preceding end of the succeeding bar 5 with a welding machine 8', the looper rolls of the looper 11 are moved downward whereby the welding is made possible with the machine 8' which is held fixed without moving, without stopping finishing mills 6. |
