| 摘要 |
<p>PURPOSE:To control the distribution of tension of a sheet at the inlet side for preventing the meandering of sheet, by imposing a tension on the sheet end of the meandering direction of the sheet which is running while being wrapped around either an upper roll or a lower one, in a wrapping type rolling. CONSTITUTION:A dancer roll 4 whose both ends are made independently movable in the vertical direction is provided to the sheet 3 inlet side of a work roll 1 rotating at a high speed and a lower work roll 2 rotating at a lower speed than the roll 1. The sheet 3 at the inlet side is wrapped around the lower side of the roll 4 locating under rolls 5, 5 without being wrapped around the roll 2, and is inserted into a gap 6 between the rolls 1, 2 and wrapped successively around the roll 1 thereby the sheet 3 is rolled. When the generation of the meandering of sheet 3 is detected at the inlet side, the sheet drawing speed at the meander- generating side is decreased by tilting the roll 4 to raise the sheet tension at said side. Thus the meandering of sheet is prevented and a rolled sheet having excellent shape is obtained.</p> |
