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[CN 201611033991.9] Electro-hydraulic Control Pressure Machinery with Pressure-holding Function and Hydraulic Reversing Function
[CN 201611033991.9] Electro-hydraulic Control Pressure Machinery with Pressure Holding Function and Hydraulic Reversing Function Title: Electro-hydraulic Control Pressure Machinery with Pressure Holding Function and Hydraulic Reversing Function Application Number: CN 201611033991.9 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 pressure holding function and 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. hydraulic pipelines; a pressure reducing valve; a first control unit; a booster mechanism; Second control unit; hydraulic buffer control mechanism; return pressure holding mechanism. The booster mechanism of the hydraulic control mechanism cooperates with the hydraulic buffer control mechanism so that when the stamping rod enters the third stroke section to cause elastic-plastic deformation of the workpiece, the pressure continues to increase, so as to meet the requirements of the gradual increase of the pressure of the workpiece during elastic-plastic deformation. The return pressure holding mechanism makes the punching rod return without impact on the actuator cylinder.
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