Patent ID: 9321094
Filing Date: 2016-04-26
CPC Classification: B21D

Claim Text:
1. A press apparatus, comprising: a lower die cam base slidably disposed inside of a lower die, wherein a lower die pad is connected to an upper portion of the lower die cam base; an upper die pad mounted under an upper die through a cushion spring at a position corresponding to the lower die pad; an upper die cam slide having a cam slide surface formed at a lower portion thereof, a cam surface formed at an upper portion thereof, and a cam steel mounted thereto; and a holding unit mounted to the lower die cam base and the upper die cam slide for holding a flange surface of a panel during press forming, wherein the holding unit comprises: wherein the lower holding pad and the upper holding pad are mounted to the lower die cam base and the upper die cam slide, respectively, interposing a pad cushion spring between the lower holding pad and the lower die cam base, and between the upper holding pad and the upper die cam slide for supplying elastic force to the lower holding pad and the upper holding pad, respectively.