US 12,090,544 B2
Rebar upsetting process and rebar upset forging machine
Chengtao He, Zhejiang (CN); Zhengjun Cheng, Zhejiang (CN); Dong Wei, Zhejiang (CN); Fengfeng Jiang, Zhejiang (CN); Yandong Wang, Zhejiang (CN); and Manchen Liu, Zhejiang (CN)
Assigned to ZHEJIANG RUICHENG MACHINERY MANUFACTURING CO., LTD., Zhejiang (CN)
Filed by ZHEJIANG RUICHENG MACHINERY MANUFACTURING CO., LTD., Zhejiang (CN)
Filed on Dec. 8, 2023, as Appl. No. 18/533,405.
Application 18/533,405 is a continuation of application No. PCT/CN2021/105017, filed on Jul. 7, 2021.
Claims priority of application No. 202110694592.1 (CN), filed on Jun. 22, 2021.
Prior Publication US 2024/0131575 A1, Apr. 25, 2024
Prior Publication US 2024/0226993 A9, Jul. 11, 2024
Int. Cl. B21K 1/56 (2006.01); B21J 5/08 (2006.01)
CPC B21K 1/56 (2013.01) [B21J 5/08 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A rebar upset forging machine, comprising:
a machine frame provided with clamping dies, wherein the clamping dies form a clamping cavity that is configured to be opened and closed and is configured for holding rebar;
an upsetting die mounted on the machine frame, wherein the upsetting die has an upsetting cavity with an enclosed cavity structure configured for upsetting and shaping an end of the rebar, and the upsetting die is configured as a solid die with a straight, closed radial cross-section that cannot be opened; and
an upsetting power device provided on the machine frame,
wherein centerlines of both the clamping cavity and the upsetting cavity align with each other, and one end of the clamping dies abuts against the upsetting die, and
wherein the clamping dies are provided with a chamfer at the one end of the clamping dies abutting against the upsetting die.