公开(公告)号：US09138909B2

公开(公告)日：2015-09-22

申请号：US13930279

申请日：2013-06-28

申请人： AMADA COMPANY, LIMITED

发明人： Kinshiro Naito ,  Masayuki Shimizu ,  Shigeru Endo ,  Takashi Matsumoto ,  Hiroshi Nakai ,  Hiroyuki Kobayashi

IPC分类号： B26D7/18 ,  B21D28/34 ,  B21D45/00 ,  B26F1/40 ,  B26F1/44

CPC分类号： B26D7/1854 ,  B21D28/34 ,  B21D45/003 ,  B26F1/40 ,  B26F1/44 ,  Y10T83/0443 ,  Y10T83/0453 ,  Y10T83/2066 ,  Y10T83/2068 ,  Y10T83/9416 ,  Y10T83/9425 ,  Y10T83/9437

摘要： A die body includes a die hole for punching a work. A core, including a discharge hole, which is in communication with the die hole, is provided in the die body. The core is provided with a plurality of fluid injection ports through which fluid is injected downward of the discharge hole. The die body is provided with inflow ports through which compressed fluid flows into the fluid injection ports. The core is made of resin. The discharge hole is tapered toward its upper side. An outer peripheral surface of the die body is provided with a peripheral groove which is in communication with the inflow ports.