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[CN 201821127375.4] Oil-electric hybrid drive servo hydraulic press
[CN 201821127375.4] Title of Oil-electric Hybrid Drive Servo Hydraulic Press: Application Number of Oil-electric Hybrid Drive Servo Hydraulic Press: CN 201821127375.4 Applicant: Application Date of Yangli Group Co., Ltd.: 2018-7-17 Patent Type: Utility Model The utility model relates to an oil-electric hybrid drive servo hydraulic press. The slider cylinder includes a servo electric cylinder located in the center and slider master cylinders located on both sides. Each slider master cylinder is connected to the oil tank through a charging valve, the inlet of the servo pump is connected with the oil tank, the outlet of the servo pump is connected with the inlet of the fifth cartridge valve, the outlet of the fifth cartridge valve is connected with its own hydraulic control port and the P port of the fifth electromagnetic reversing valve, the port of the fifth electromagnetic reversing valve is connected with the working oil pipe, and the B port of the fifth electromagnetic reversing valve is connected with the energy storage oil pipe through the first check valve; The energy storage oil pipe is connected with the bottom of the pressure switch, the energy storage oil pipe is also connected with the P port of the third electromagnetic directional valve, the port of the third electromagnetic directional valve is connected with the lower hydraulic control port of each liquid charging valve, and the B port of the third electromagnetic directional valve is connected with the upper hydraulic control port of each liquid charging valve. The hydraulic press can realize the flexible conversion of the slider speed and the precise control of the position, low noise and low energy consumption, and can reduce the use of hydraulic oil.
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