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[CN201720974901.X] Internal Press Title: Internal Press Application Number: CN201720974901.X Applicant: Weifang Gaomin Machinery Manufacturing Co., Ltd. Application Date: 2017-8-4 Patent Type: Utility Model The utility model proposes an internal press, including an arched frame, an upper pressure platform and a lower pressure platform are arranged in the arched frame, the lower pressure platform is fixedly arranged, and four arched guide rails can be arranged up and up and down in the arched, the upper pressure platform can move along four guide rails. The top center of the upper pressure platform is connected with a pressurizing plunger. Both sides of the pressurizing plunger are respectively provided with a lifting piston. The pressurizing plunger and the lifting piston are both connected with the hydraulic oil tank through an oil pipe. The bottom of the upper pressure platform is provided with an upper mold groove, the lower pressure platform is provided with a lower mold groove, and both sides of the lower mold groove are respectively provided with an inflatable pressurizing device and a plug sealing device. The inner press through the upper mold groove down and the lower mold groove buckle to form a mold space, inflatable pressure device and plug sealing device work to make the pipe pressure expansion limited to form a given processing shape, higher efficiency, better product consistency, at the same time, the pressure platform lifting is more stable.
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