Pneumatischer Zylinder und Steuerventil dafür

摘要

A pneumatic cylinder, especially for a spot-welding machine, has a sleeve valve mounted on the piston rod. The sleeve valve provides a venting valve 54,56 for dumping pressure from return chamber 34 at the end of the forward stroke, and a progressive restrictor 46,58 to close off forward chamber 32 and provide cushioning at the end of the return stroke.