| 摘要 |
PROBLEM TO BE SOLVED: To build up a variable speed pneumatic action mechanism in a simple mechanism, in which its action speed of a pneumatic cylinder is reduced in front of its action end while the pneumatic cylinder is operating and the pneumatic cylinder reaches the action end at reduced speed; to restrain costs of facilities and remodeling costs at a low level when a variable speed mechanism is added on an existing pneumatic system; and to remove residual pressure in a pnuematic pipe. SOLUTION: An electromagnetic valve, which can switch ventilating and a neutral state while ventilating haldway in the non-exciting state of the valve, is arranged halfway in a passage of the pipe leading to the pneumatic cylinder driven by the electromagnetic valve which is in a neutral state at the exciting state of the valve capable of switching its ventilation in a ventilating direction, a neutral direction, and a reverse direction. COPYRIGHT: (C)2006,JPO&NCIPI
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