| 摘要 |
PURPOSE:To execute simultaneously a lot of press works by a small-sized press die by providing s worked work placing part provided with a button die, on the press die, driving plural work opposed part cylinder heads by an ascent and a descent of a punch, and working a work by a pierce punch attached to it. CONSTITUTION:A work 11 is attached to a position of button dies 33a-33c in plural work placing parts 32 of a lower holder 31. A punch 51 is made to descend, and a driving cylinder head 38 is pressed into the inside of a cylinder 34 against an energizing force of a spring 45 by a projecting part 50 of an upper holder 49. The pressing force is transferred to cylinder heads 39a-39c through a pressurized oil 40, they slide and move in the direction of the button dies 33a-33c against an energizing force of a spring 46, and the work 11 is pierced by pierce punches 47a-47c of its tip and the button dies 33a-33c. Subsequently, when the punch 51 ascends, a cylinder head 38 and 39a-39c return to its original position by a restoring force of the springs 45, 46, respectively, and plural works are executed simultaneously by a press operation of once. |
