| 摘要 |
PURPOSE: Air or gas generated by an injection material is discharged from a mold using a piston cylinder to minimize power consumption and to prevent pin holes. CONSTITUTION: An exhaust hose(7) connected to a gas tank(12) is installed with a plate check valve(11). An A port of a piston cylinder(10) having four intake and exhaust ports is connected to the end of the plate check valve. An exhaust hose(9) is installed between the plate check valve(11) and A port. The exhaust hose is mounted with another plate check valve in opposite direction of the plate check valve(11). A reciprocating piston, a position controlling switch connected with a controlling plate(2) are located in the piston cylinder. C port and B port are mounted to intake or exhaust air by the switch of a solenoid valve(23).
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