| 摘要 |
PURPOSE:To save the consumption of excessive pressures by a method in which plural pressure storage devices having different pressure-storabilities are provided to an oil-pressure circuit, and the oil pressures from the pressure storage devices of adequate pressures are used for drive operations, e.g., injection, weighing, the opening and closing of molds, etc. CONSTITUTION:Three pressure storage devices 19-21 for high-, medium-, and low-pressures are provided to the inside of the oil-pressure circuit of an injection molding machine. The stored pressures of the devices 20, 19 and 21 for medium, high and low pressures are applied to the circuits of a mold-clamping cylinder 18, an injection cylinder 14 and an oil-pressure motor (actuator) B through the switching positions (a) and (b) and the intermediate position of solenoid switch valves 22-24. |
