公开(公告)号：US11420252B2

公开(公告)日：2022-08-23

申请号：US16712074

申请日：2019-12-12

Applicant: CITIC Dicastal CO., LTD.

Inventor： Chuan Dai ,  Jiansheng Wang ,  Yachun Wan ,  Yang Han ,  Hongyin Zhang ,  Bo Tian ,  Gang Zhao ,  Zhi Chen

IPC: B22D17/20

Abstract: A punch pin assembly includes a punch rod, a punch pin and a punch pin connection rod connected therebetween. A heat-conducting medium conveying loop is arranged in the punch rod and the punch pin connection rod. The heat-conducting medium conveying loop communicates with the outside of the punch rod separately through a first medium port and a second medium port which are formed in the punch rod.