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What is the principle of hydraulic press ?

2021-11-08

With the improvement of people's living standard, the demand for metal stamping and stretching products is increasing year by year. At the same time, the demand for product varieties is also increasing. On the other hand, production batches are shrinking. In order to meet the needs of small and medium-sized batch production, rapid adjustable processing equipment is needed to make hydraulic press an ideal forming process equipment. Hydraulic press is a kind of mechanical equipment which uses hydraulic oil as working medium to transmit power. Its use has brought convenience to people, and has been widely used in more industries. So, what is the working principle of hydraulic machine? Or, how does it do that? Here we briefly introduce, hope that more and more people can understand the hydraulic equipment. 

What is the principle of hydraulic press ?

The points are as follows:

What is a hydraulic press
Principle of hydraulic machine
Hydraulic machine classification
Conclusion


What is a hydraulic press


Hydropress is a kind of machine that uses liquid as working medium to transfer energy and realize various processes. In addition to forging andforming, they can also be used for distillation, pressing, packaging, pressing and pressing plates. It is a machine that uses hydrostatic pressure to process related products. This equipment is especially suitable for bending, forming, flanging and other processes of central load components. It can also be used for stamping and blanking by means of stamping buffer device. It is the preferred product in shipping industry, pressure vessel industry, chemical industry ano other industries.


Principle of hydraulic machine 


The basic principle of hydropress is that the oil pump delivers the hydraulic oil to the integrated cartridge valve block, and distributes the hydraulic oil to the upper or lower chamber of the cylinder through various one-way valves and safety valves. Under the action of high pressure oil, the cylinder moves. t is a device that uses liquid to transfer pressure. Pascal's law is obeyed when liquid transfers pressure in sealed container. The hydraulic transmission system of four-column hydraulic press consists of power mechanism, control mechanism, executive mechanism, auxiliary mechanism and working medium. Power mechanism usually uses oil pump as power mechanism, usually cumulative oil pump. In order to meet the requirements of the motion speed of the actuator, one or more oil pumps are selected. It can be used for pressure processing and forming of various plastic materials, such as extrusion, bending, deep drawing of stainless steel plates and cold pressing of metal parts. It can also be used for pressing powder products, grinding wheels, bakelite and resin thermosetting products. 


Hydraulic machine classification


The existing hydraulic machine are mainly divided into four-column, single-column, horizontal and vertical hydraulic presses. Here, let's give a brief introduction.


(1) Limb posture


The fuselage of the equipment is in the form of three beams and four columns, with good rigidity and stable performance. Advanced pump control technology is adopted to save energy and protect the environment. Equipped with weighing sensor, it can display the actual pressure. This kind of them can detect pressure and pressure displacement at the same time. When the pressure or displacement is not within the prescribed range, the machine will automaticaly stop and alarm. It is mainly used for precision blanking and stamping.


(2) Single column type


Machines with this structure have independent power mechanisms and electrical systems. It can work in three ways: using button centralized control to adjust, manual and semi-automatic. It also has independent power organization and electrical system, which can complete adjustment and semi-automatic operation 


(3) Transverse


The machine with this structure has independent hydraulic control mechanism and electrical system. It can be operated manually, freshly and automatically by using buttons and pedal switches alone. Horizontal hydraulic press is suitable for pressing, bending, stamping, sheet stretching and flanging of plasti materials. It can also be used for pressing, calibration, grinding wheel forming, cold extrusion, metal parts forming, plastic products and metal powder products pressing process.


(4) Vertical frame


The hydraulic press of this structure adopts integral steel plate welded frame, which has good overall rigidity and high compressive strength. It uses downward cylinder, so it is more convenient to replace and clean the cylinder. 
Conclusion


Hydraulic press is one of the most widely used equipment in product forming production. Since the advent of the 19th century, it has developed rapidly and become one of the indispensable equipment in industrial production. Because of the wide adaptability of hydraulic press in production, it has been widel used in various sectors of the national economy. Therefore, more and more enterprises put into production. If you want to choose the right hydraulic pres: please choose us, our company is committed to the production of hydropress and other similar equipment. If you have any questions, please consult us in time 


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