Hydraulic press (a kind of hydraulic press) is a kind of hydraulic press, which uses special hydraulic oil as working medium and hydraulic pump as power source. The hydraulic oil enters the oil cylinder/piston through the hydraulic pipeline by the action of the pump, and then there are several groups of mutually matched seals in the oil cylinder/piston. The seals at different positions are different, but they all play a sealing role, so that the hydraulic oil cannot be leaked. Finally, the hydraulic oil circulates in the oil tank through the one-way valve, so that the cylinder/piston circulates to do work, so as to complete a certain mechanical action as a productivity machine.

The hydraulic press is composed of main engine and control mechanism. The main machine part of the hydraulic press includes the machine body, the main cylinder, the ejector cylinder and the liquid filling device. The power mechanism consists of oil tank, high-pressure pump, low-pressure control system, motor, various pressure valves and directional valves. Under the control of electrical devices, the power mechanism realizes energy conversion, adjustment and transmission through pumps, oil cylinders and various hydraulic valves, and completes the circulation of various process-driven single-mode hydraulic presses.