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Working principle of single column hydraulic press

by:WORLD     2022-11-11
The working principle of the single-column hydraulic press


A hydraulic press is a device that uses liquid to transmit pressure. Liquids obey Pascal's law when transferring pressure in a closed container



The hydraulic transmission system of the hydraulic press consists of a power mechanism, a control mechanism, an executive mechanism, an auxiliary mechanism and a working medium.



Powertrain
Usually an oil pump is used as the power mechanism, generally a positive displacement oil pump. In order to meet the requirements of the movement speed of the actuator, choose one oil pump or multiple oil pumps. Gear pump for low pressure (oil pressure less than 2.5MP); vane pump for medium pressure (oil pressure less than 6.3MP); plunger pump for high pressure (oil pressure less than 32.0MP).






Hydraulic machines usually refer to hydraulic pumps and hydraulic motors. Both hydraulic pumps and hydraulic motors are energy conversion devices in the hydraulic system. The difference is that the hydraulic pump converts the mechanical energy of the driving motor into the pressure energy of the oil, which is the power device in the hydraulic system. The hydraulic motor converts the pressure energy of the oil into mechanical energy and is the executive device in the hydraulic system.



Hydraulic pumps and hydraulic motors commonly used in hydraulic systems are volumetric, and their working principle is to use the change of the sealing volume to absorb and press oil. In terms of working principle, most hydraulic pumps and hydraulic motors are reciprocal, that is, when the pressure oil is input, the hydraulic pump becomes a hydraulic motor, and the speed and torque can be output, but structurally, the hydraulic pump and the hydraulic motor are still Some differences.









The single-column hydraulic press has an independent power mechanism and electrical system, and adopts the centralized control of buttons, which can realize the adjustment, manual and semi-automatic three working modes. The process needs to be adjusted, and the ejection process can be completed. There are three process modes: the ejection process and the stretching process. Each process has two types of process actions: constant pressure and fixed stroke. After pressing, the constant pressure molding process has Ejection delay and automatic return. The single-column hydraulic press has a wide range of versatility and is suitable for the processing and forming of various plastic materials, such as extrusion, bending, hemming, stretching, etc. At the same time, the hydraulic press can also be used for pressing and forming of various plastic and powder products. In addition, the single-column hydraulic press can also be used for product calibration, press fitting and shaping. This article is from the official website of the manufacturer WORLD Press Machine www.pressmachine-world.com, please indicate the source for reprinting!



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