Middle part groove upset machine

The utility model discloses a middle part groove upset machine, including the base that is used for installation upset machine, be equipped with gyro wheel support group spare in base four angular point portions, be equipped with a pair of endless chain wheel at gyro wheel support group spare top, be equipped with the chain at endless chain wheel outside cover, the chain with establish upset driveassembly on the base and coordinate that to drive the endless chain wheel rotatory, it has first ring -shaped chain plate of group and second to organize ring -shaped chain plate to distribute aboutbeing between two endless chain wheels, groove hold -down mechanism in the middle part of ring -shaped chain plate central authorities of first group are equipped with, first ring -shaped chain plateof group and the ring -shaped chain plate of second group pass through the drive shaft and are connected with transport motor. The utility model provides a current middle part groove upset utilize themanpower to operate, lead t