| 摘要 |
PURPOSE:To simplify the entire structure in a small size and to eliminate a need of external rotation stop or reinforcemnt by a method wherein an air supply port is provided and a piston rod and the tip end of a guide shaft are interconnected fixedly by means of a connection plate. CONSTITUTION:A guide mechanism 2 and an air cylinder mechanism 3 are arranged in the upper part within a short-sized case body 1. The tip end of the guide shaft 4 which is an operating part of the guide mechanism 2 and that of a piston rod 5 of the air cylinder mechanism 3 are interconnected as protruded out of the case body 1 by means of the short-sized connection plate 6 for performing an combined operation. When a pressurized air is supplied through a screw hole 30, a piston 12 is extruded forwardly, and at the same time the piston rod 5 is moved integrally, thereby moving also the guide shaft 4 integrally. |
