| 摘要 |
PURPOSE: To provide a dual stroke cylinder with simplified structure and a control system, and reducing the cost. CONSTITUTION: This dual stroke cylinder comprises a piston 13 and its rod 16 sliding in a cylinder 12, and a positioning member 14 externally fitted to the rod and penetrating through a rod hole 12A of the cylinder. A locking part 18 is mounted on an outer periphery of a point part of the rod, and an inner end side engagement part 22 to be engaged with the inner side of the rod hole of the cylinder and an outer end side engagement part 23 to be engaged with a locking part 18 of the rod are mounted on the positioning member 14 whose outer peripheral surface air-tightly slides on the rod hole 12A of the cylinder and whose inner peripheral surface air-tightly slides on an outer peripheral surface of the rod. Supply and exhaust ports 18A, 19A for supplying and exhausting the pressure fluid are formed on cylinder chambers 18, 19 at both sides of the piston in the cylinder, and the intermediate stop is available by the supplying and exhausting of the pressure fluid to the ports.
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