Deceleration controlling method for piston rod in pneumatic cylinder

Abstract

Abstract PURPOSE:To reduce shock in a deceleration process by flowing air in an opposite direction to that of a high speed process in at least one of intake and exhaust ports, and corresponding pressure and flowing time of the air to kinetic energy of a load. CONSTITUTION:Secondary pressure chamber passages 49 of pneumatic cylinder changeover valves 7 are connected to ports 4, 5 on head and rod sides of an air cylinder 1. Air is supplied to the head side port 4 fast, and exhausted from the rod side port 5 fast, to shift a piston rode 3 with high speed. In such a deceleration process, combination of operation conditions and operation time of the two changeover valves 7 are selected in correspondence with kinetic energy of a load W. The air flows in an opposite direction to that of a high speed process in at least one of the ports 4, 5, while the pressure and the flowing time thereof are controlled. Deceleration is thus facilitated, and the shock at this time is reduced.

Inventors

• 👤 Takashi Kimura
• 👤 隆 木村

Bibliographic Details