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[CN 201810131651.2] Hydraulic press control system and processing method of automobile interior trim parts
[CN 201810131651.2] Hydraulic Press Control System and Its Method for Processing Automotive Interior Parts Title: Hydraulic Press Control System and Its Method for Processing Automotive Interior Parts Application Number: CN 201810131651.2 Applicant: Yangli Group Co., Ltd. Application Date: 2018-2-9 Patent Type: Invention Application The present invention relates to a hydraulic press control system and its method for processing automotive interior parts. The servo pump includes a low pressure large flow pump and a high pressure small flow pump. The outlet of the low pressure pump is connected with the inlet of the first check valve, the outlet of the high-pressure pump is connected in parallel with the outlet of the first one-way valve. The outlet of the first one-way valve is connected with the inlets of the second cartridge valve, the third cartridge valve and the fourth cartridge valve. The inlet of the check valve is connected, and the outlet of the second check valve is connected with the upper cavity of the master cylinder; the lower cavity of the master cylinder is also connected with the inlet of the first cartridge valve, and the second cartridge valve. The method of processing automobile interior parts includes the following steps in sequence: quick lowering of the master cylinder, working of the master cylinder, pressurizing of the master cylinder, pressure maintaining of the master cylinder, pressure relief of the master cylinder, slow return of the mold drawing, ejection of the punching cylinder, return of the punching cylinder and return of the master cylinder. The automotive interior parts processed by the hydraulic press have high yield and low energy consumption.
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