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[CN 201720221341.0] Title of a four-column hydraulic press: Application number of a four-column hydraulic press: CN 201720221341.0 Applicant: Wenzhou Zhengpeng Electric Appliance Co., Ltd. Application Date: 2017-3-8 Patent Type: Utility Model The utility model discloses a four-column hydraulic press, including a base, four corners of the base are provided with columns, the columns are sleeved with beams, the top of the columns are provided with a top seat, and the top seat is provided with a hydraulic cylinder for driving the beam, the upper end of the base is provided with a lower formwork, the lower formwork is provided with a plurality of extrusion holes, the lower end of the crossbeam is provided with an upper formwork, the upper formwork is provided with a sleeve facing the extrusion holes, the outer side of the sleeve is provided with a groove arranged in a vertical direction and connected with the lower end of the sleeve, the sleeve is provided with a rotating rod, the lower end of the rotating rod is provided with an external thread, the planetary gear is provided with a central gear meshing with the planetary gear, and the central gear is provided with a motor for driving the central gear to rotate. After the lamp shell is extruded and formed, the motor drives the rotating rod to rotate. At this time, the lamp shell will move vertically downward along the groove when the rotating rod rotates because of the matching of the protrusion and the groove formed by the lamp shell, and finally come out of the rotating rod, Complete automatic demoulding.
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