A press is a machine that uses liquid static pressure to process products such as metal, plastic, rubber, wood, powder, etc. It is commonly used in pressing and forming processes, such as forging, stamping, cold extrusion, straightening, bending, flanging, sheet metal drawing, powder metallurgy, pressing, and so on.
The driving system of the press mainly includes two types: pump direct drive and pump accumulator drive. The pump is directly driven, and the pump in this driving system provides high-pressure working fluid to the hydraulic cylinder. The flow valve is used to change the direction of the supply, and the relief valve is used to adjust the limited pressure of the system, while also playing a safety overflow role. This driving system has fewer links, a simple structure, and the pressure can automatically increase or decrease according to the required working force, reducing electrical energy consumption. However, the capacity of the pump and its driving motor must be determined by the maximum working force and maximum working speed of the hydraulic press. This type of drive system is mostly used for small and medium-sized hydraulic presses.
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