Patent ID: 9481021
Filing Date: 2016-11-01
CPC Classification: B21D,F16F

Claim Text:
1. A load-applying device in combination with a blank holding die member of a press-forming die, the device comprising: a rod which includes a first end, a second end, and a flange which is provided between the first end and the second end; a lamination coned disc spring having a plurality of coned disc springs that are laminated, wherein the coned disc springs have a center hole to which the first end of the rod is inserted; a first plate which includes a first through hole to which the first end of the rod is inserted, wherein the first plate abuts the lamination coned disc spring; a second plate which includes a second through hole to which the second end of the rod is inserted, wherein the second plate abuts the flange; and a gap fixing member which is detachably provided between the first plate and the second plate and fixes a gap between the first plate and the second plate so as to maintain the gap by which the lamination coned disc spring biases the flange to the second plate, wherein the second end moves in a mutually approaching direction relative to the first plate during press-forming, and the lamination coned disc spring is compressed, and wherein the load-applying device is configured to apply a load to the blank holding die member during press forming the blank in the press-forming die.