| 摘要 |
A device for controlling a pneumatic cylinder device, being of a double cylinder construction comprising an outer cylinder and an inner cylinder sealably fitted in the outer cylinder to slide along the outer cylinder. In the inner cylinder, a piston with a valve at one side thereof or valves at both sides thereof is slidably disposed. To control the valve or valves, an adjusting rod is provided which is slidably and rotatably disposed in the piston and its piston rod and adjusted by an operating lever. Alternatively, the double cylinder construction comprises a pair of cylinders disposed axially in parallel to each other. In the cylinders, pistons are disposed, one of which has a valve at one side thereof or valves at both sides thereof. The cylinders are communicated with each other by a communication construction having a communication adjusting groove and an adjusting lever for adjusting the communication area of communication adjusting groove. In either case, controls of operation load, operation speed and braking are easily achieved during the compressing and stretching operations without requiring a separate device, by controlling the valve or valves and/or the communication adjusting groove.
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