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[CN 201710299993.0] Four-column hydraulic press with emergency backlash locking function
[CN 201710299993.0] Title of four-column hydraulic press with emergency recoil locking function: Application number of four-column hydraulic press with emergency recoil locking function: CN 201710299993.0 Applicant: Jiangsu Mingge Forging Equipment Co., Ltd. Application date: 2017-5-2 Patent type: Invention application The present invention discloses a four-column hydraulic press with emergency recoil locking function, including a base, a four-column frame, a stamping device, a hydraulic cylinder and a PLC control device, the punching device is connected to the top of the four-column frame for punching up and down; the hydraulic cylinder is connected to the oil supply device through a three-way overflow valve; the overflow recoil device includes a reverse impact block, a locking device and a recoil hydraulic cylinder; the reverse impact block is fixed at the bottom of the punching device through a locking device, and the other end of the three-way overflow valve is connected to the locking device of the overflow recoil device to open or lock the reverse impact block; the stamping device, hydraulic cylinder and recoil hydraulic cylinder are all connected to the PLC control device to obtain drive or stop or pause instructions. The hydraulic press of the present invention has an overflow, recoil and decompression function, ensures the quality of stamping parts, and at the same time prevents the hydraulic cylinder from being burned due to excessive pressure for a long time, and improves the service life of the hydraulic cylinder.
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