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[CN 201720132041.5] Hydraulic system suitable for 12~25mm guillotine shearing machine
[CN 201720132041.5] A hydraulic system suitable for 12~25mm guillotine shears Title: A hydraulic system suitable for 12~25mm guillotine shears Application number: CN 201720132041.5 Applicant: Nanjing McPhee Automatic Control Co., Ltd. Application date: 2017-2-14 Patent type: Utility model This utility model provides a hydraulic system suitable for 12~25mm guillotine shears, it includes a main valve body, a main oil cylinder, an auxiliary oil cylinder, a pressure cylinder and an oil tank; the main valve body includes a main pressure valve, an electro-hydraulic reversing valve, a balance valve, a double hydraulic control check valve, a second electromagnetic reversing valve, and a pressure reducing valve, The check valve and the third electromagnetic reversing valve, the main pressure valve is a two-way cartridge valve, the pilot element is the first electromagnetic reversing valve, and the pressure valve is connected. The advantages are: the return of the tool holder adopts the pressure oil output by the oil pump, does not use the pressure vessel, is convenient to export to some countries such as the European Union, and has high safety; The pressing cylinder adopts the pressure reduction control method to prevent the plate from being crushed when cutting stainless steel and adapt to the shearing of different metal plates. The oil return of the pressing cylinder and the pressure return of the main system are set separately, so that the pressing material can be fully loosened and the processing is reliable. The main pressure is controlled by solenoid valve, the system heat is small; the use of threaded cartridge valve, compact structure, not easy to occur oil leakage phenomenon.
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