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[CN 202110855738.6] Energy-saving four-cylinder indirect thermoforming hydraulic press control system
[CN 202110855738.6] An Energy-saving Four-cylinder Indirect Thermoforming Hydraulic Press Control System Title: An Energy-saving Four-cylinder Indirect Thermoforming Hydraulic Press Control System Application Number: CN 202110855738.6 Applicant: Zhejiang University Application Date: 2021-7-28 Patent Type: Invention Application The invention discloses an energy-saving Four-cylinder Indirect Thermoforming Hydraulic Press Control System. A plurality of pump direct-drive dynamic pressure control units are respectively communicated with a plurality of multi-pump confluence control units, the oil of the plurality of multi-pump confluence control units is connected with the cylinder direction switching unit after merging into one oil circuit, the cylinder direction switching unit is respectively communicated with the process main oil circuit and the return main oil circuit, and the process main oil circuit is communicated with the upper end of the hydraulic machine after passing through the pressing level control unit and the four-type pressing cylinder unit, the four-column pressing cylinder unit is fixedly connected with the upper end of the hydraulic press, and the return main oil circuit is connected with the lower end of the hydraulic press after passing through the return control unit and the overflow valve parallel control unit in turn. The hydraulic press controlled by the invention has a faster mold-closing speed and a longer holding time, reduces the loss of air-cooled heat, and at the same time ensures that the workpiece has sufficient mold-closing force to offset the sharp increase in internal pressure in the mold-closing quenching stage.
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