公开(公告)号：US12076776B2

公开(公告)日：2024-09-03

申请号：US17563087

申请日：2021-12-28

申请人： Kawasaki Jukogyo Kabushiki Kaisha ,  LVD Company nv

发明人： Hideki Okada ,  Hiroki Oribe ,  Hitoshi Yano ,  Kristof Tyvaert ,  Alexander Cornelus

IPC分类号： B21D5/02

CPC分类号： B21D5/0209 ,  B21D5/0272 ,  B21D5/0281

摘要： There is provided a press brake that can improve forming accuracy in partial bending. A press brake includes: a conveying mechanism that intermittently conveys a workpiece; a die including a pair of shoulder portions and a groove portion located between the pair of shoulder portions, the pair of shoulder portions being arranged away from each other in a conveying direction of the workpiece and supporting a rear surface of the workpiece; a backup plate that extends on the pair of shoulder portions, covers the groove portion, and is interposed between the die and the workpiece; and a punch that moves relative to the die so as to approach the die each time the conveying mechanism stops conveying the workpiece and presses the workpiece so as to bend the workpiece within an elastic deformation region of the backup plate.