Die letting escape device null of time tune

摘要

PURPOSE:To prevent uneven bending due to a split die by pulling out a plunger, which supports the spacer of a split die adjacent to the outside of both ends of a plate material, by means of the rotation of a selecting pawl and removing the split die of the subject position from a pressurizing line. CONSTITUTION:By drawing the plunger 30 to the left, the spacer 32 at the tip of the plunger is removed from a pressure providing part 25. When a ram is lowered by pressure in this state, the pressure providing part 25 is lowered in a non-pressurized state to escape from the pressurizing line, and by means of the process by the ram, only the bending line of a work is bent in a V-shape. At this time, a part where bending is not required does not interfere with the lower die 14. Namely, by pulling out the spacer 32 at the prescribed position of the lower die 14, the pin of the part where the bending is not required is lowered to the extent of the thickness of the spacer, the function of the pin is restrained and the interference is prevented.