Die with extrusion pin structure

• Main Authors: DENG YANGQUAN, LYU YINGXUE, GAO YU, XU JIBO, CUI JIE, YE BO, YU JIAJIE, SHI DONGJIE, SHAO JIDONG, YU GAOJIE, KE CHENG, LU YIQI
• Format: Patent
• Language: Chinese; English
• Published: 16.12.2022
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

The utility model belongs to the technical field of dies, and provides a die with an extrusion pin structure, which comprises a movable die holder and a fixed die holder, a movable die core is arranged on the movable die holder, a fixed die core is arranged on the fixed die holder, and a cavity is defined by the movable die core and the fixed die core, and is characterized in that an extrusion sleeve is inserted on the fixed die core; an extrusion pin is arranged at the driving end of the oil cylinder, the extrusion pin is inserted into the extrusion sleeve and can extend into the cavity, a liquid inlet pipe and a liquid outlet pipe are arranged on the outer portion of the extrusion pin, a flow channel is formed in the extrusion pin, and the liquid inlet pipe is communicated with the liquid outlet pipe through the flow channel. Compared with the prior art, the utility model has the advantages that when the wall thickness of the product is not uniform and the thick part is solidified, the hole shrinkage is eas