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[CN 201620357034.0] Hydraulic differential mechanical press
[CN 201620357034.0] Title of Hydraulic Differential Mechanical Press: Application Number of Hydraulic Differential Mechanical Press: CN 201620357034.0 Applicant: China Heavy Machinery Research Institute Co., Ltd. Application Date: 2016-4-26 Patent Type: Utility Model The utility model discloses a hydraulic differential mechanical press, which adds a hydraulic differential system to the common mechanical press, the system includes a bracket, a synchronous oil cylinder, a proportional oil cylinder, a pressure sensor, a bladder accumulator, an electromagnetic reversing valve, an oil supplier and an oil tank. The bracket is installed on the slider and in sliding contact with the synchronous oil cylinder. The synchronous oil cylinder is arranged on the frame and is connected with the middle cavity of the proportional oil cylinder through the electromagnetic reversing valve. The upper cavity of the proportional oil cylinder is connected with the overload protection oil cylinder and connected with the second bladder accumulator through the pressure sensor, the lower cavity of the proportional oil cylinder is connected with an electromagnetic reversing valve and a proportional pressure valve and is connected with a bladder accumulator. The bladder accumulator is connected to the oil tank through an oil supply. The hydraulic differential system can be adjusted according to needs. The operating speed value of the slider can be adjusted, so as to realize the purpose of decelerating down the slider of the mechanical press and the bottom dead center pressure holding function, improve the work efficiency and product quality, and low product price.
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