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