Workpiece transfer mechanism, workpiece transfer method and workpiece processing system

摘要

A workpiece transfer mechanism 76 transfers workpieces W to a workpiece boat 40 having ringlike tables 86. The transfer mechanism 76 includes a fork main body 78 being movable forward and rearward with the workpiece W placed thereon; stopper members 94 provided at the end portion of the fork main body 78; clamp means 96 provided on the proximal end side of the fork main body 78 and having a pressing portion 102 coming into contact with the circumferential edge of the workpiece W and pressing the workpiece W toward the stopper member 94 for clamping; and fork elevating means 80 for lifting and lowering the fork main body 78. When the workpieces W are transferred to a workpiece boat 40, the pressing portion 102 of the clamp means 96 is controlled so as not to be inserted into a gap between tables 86. Thus, although the pitch between the tables 86 is small, the pressing portion 102 of the clamp means 96 does not interfere with the workpiece boat 40.