The present utility model discloses a hydraulic system for an accumulator type hollow blow molding machine, comprising an oil tank and a double vane pump. The double vane pump is mounted on the oil tank, a motor is mounted on the double vane pump and electrically connected with a frequency converter, a first main oil pipe is mounted at the main oil outlet of the double vane pump, and a second main oil pipe is mounted at the auxiliary oil outlet of the double vane pump. An electromagnetic overflow valve, a first plate check valve, a wall thickness oil pipe, a mold shifting oil pipe and a machine lifting oil pipe are sequentially mounted on the second main oil pipe. A first two-position electromagnetic directional valve is connected between the first main oil pipe and the second main oil pipe, and an electromagnetic unloading valve, a second plate check valve, an injection oil pipe and a mold opening and closing oil pipe are sequentially mounted on the first main oil pipe. The utility model avoids the problem that the hydraulic system of the accumulator type hollow blow molding machine needs to select a large displacement pump, a high-power motor and large-sized auxiliary components, and achieves the purposes of reducing production cost and saving social resources.
Country Code: CN
Application Number: CN201420122530.9
