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[CN 201611033969.4] Electro-hydraulic Control Pressure Machinery with Hydraulic Reversing Function
[CN 201611033969.4] Electro-hydraulic Control Pressure Machinery with Hydraulic Reversing Function Title: Electro-hydraulic Control Pressure Machinery with Hydraulic Reversing Function Application Number: CN 201611033969.4 Applicant: Tianjin Shaohui Technology Co., Ltd. Application Date: 2016-11-22 Patent Type: Invention Application The present invention discloses an electro-hydraulic control pressure machinery with hydraulic reversing function for stamping workpieces, it includes an actuator and a hydraulic control mechanism that provides pressure for the actuator and controls the actuator; the hydraulic control mechanism includes: first and 2. three hydraulic pipelines; a pressure reducing valve; a first control unit; a booster mechanism; Second control unit; hydraulic buffer control mechanism. The pressure boosting mechanism of the hydraulic control mechanism cooperates with the hydraulic buffer control mechanism so that the pressure of the stamping rod increases continuously when entering the third stroke section to make the workpiece undergo elastic-plastic deformation, thus meeting the requirement of gradually increasing the pressure of the workpiece during elastic-plastic deformation. The cooperation of the two check valves in the first control unit can make the stamping rod feed to the third stroke section during the second stroke section, the oil supply is automatically switched from the first hydraulic line to the second hydraulic line.
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