| 摘要 |
PURPOSE:To enable sufficient response with a low capacity motor even if moving velocity of a band sheet is large by turning drum shears idly at the time of non-cutting of the band sheet and by approaching in cutting and separating after cutting. CONSTITUTION:A pair of opposite drum shears 10, 11 are placed separately with each other except the time of cutting of a strip 1, and always turned at a peripheral velocity identical with moving velocity of the strip 1 by a motor, and when cutting of the strip 1, pressure fluid makes pistons 21, 22 approach with each other and gears 14, 15 are moved around gears 16, 17, and the drum shears 10, 11 connected to gears 14, 15 directly are approached with each other. And the strip 1 is cut by cutting edges 8, 9 and after cutting, the pistons 21, 22 are separated immediately and the gears 14, 15 are moved to the reverse direction around the gears 16, 17 and the drum shears 10, 11 connected to the gears 14, 15 directly are separated. Thus, high velocity cutting of the strip can be made with the low capacity motor and productivity can be improved. |
