The utility model relates to stainless steel
pipe stretching equipment technical field, and disclose automatic contraction jaw device, including disc drawbench frame, drive unit and disc cylinder, the inside of disc drawbench frame is located disc cylinder outside and is provided with protection subassembly, the inside of disc cylinder is provided with
cutting subassembly, recessed place of disc cylinder outer edge is provided with jaw subassembly and arc limit plate, the outside of disc drawbench frame is provided with drawbench unit. This automatic contraction jaw device, through the design of arc limit plate, arc limit plate can adapt disc cylinder internal space, and with chain
abutment connection can effectively limit and guide chain, avoid the deviation when chain movement, guarantee stainless steel
pipe automatic stretching process smooth and stable, through the design of jaw subassembly, jaw subassembly opens and shuts through the cylinder drive
forceps, can steady clamping stainless steel
pipe material head, cooperate with the locking pin and locking hole of
jaw locking subassembly
adaptation, can accurate locking jaw subassembly, prevent its stainless steel pipe displacement when stretching, and the practicality is higher.