The pivot shaft pivots between a position where {HEAD ~ a workpiece} is gripped by gripper arms to a pivotal discharge position where the workpiece is released by {TAIL ~ the gripper arms} 
The pivot shaft pivots between a position where { HEAD ~ a workpiece } is gripped by gripper arms to a pivotal discharge position where the workpiece is released by { TAIL ~ the gripper arms }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL