DIE SET FOR POWDER MOLDING PRESS

摘要

PURPOSE:To simplify construction and to prevent failure by receiving lower punches during compression by a base plate and driving cylinder actuators connected to the respective lower punches to remove the molding from dies after the compression and to reset the lower punches to the home positions. CONSTITUTION:A powder material D is supplied into a cavity 3 and an upper punch 11 descends and is inserted into the cavity. A die 1 descends as well together with the plate 2 and yoke plate 9 to start the compression. The lower punch 6 descends as well together with a holder 10 at the same instant. The holder 10 is received by the base plate 7 to complete the compression when the die 1 and the upper punch 11 descend down to the prescribed position. The die 1, driven by a lower ram B, continues to descend even after the completion of the compression so that the top surface of the die 1 is brought lower than the top surface of the upper punch 6. The molding is thus removed from the die. The cylinder actuators 20 are thereafter driven and the upper punch 5 is lifted up to the position where an adjusting ring 27 contacts the surface 28. The molding is thereby removed from the upper punch 6.