公开(公告)号：US20200206807A1

公开(公告)日：2020-07-02

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 ,  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.