A four-column hydraulic press is a type of equipment that uses a liquid to transmit pressure. Its working principle is that the oil pump transports the hydraulic oil to the integrated cartridge valve block, and then distributes the hydraulic oil to the upper or lower chamber of the cylinder through each check valve and relief valve, and makes the cylinder move under the action of high-pressure oil.
The hydraulic transmission system of the four-column hydraulic press is composed of a power mechanism, a control mechanism, an actuator mechanism, an auxiliary mechanism and a working medium. Features include:
 
- Four-column structure, simple, economical and practical; The frame structure has good rigidity, high precision and strong anti-eccentric load capacity.

- Integral cartridge valve set system reduces leakage points, reliable operation and long service life.

- Adopt PLC control electrical system, compact structure, sensitive, reliable and flexible.

- The working pressure and stroke can be adjusted according to the process requirements within the specified range, and the operation is simple.

- It has three operation modes: adjustment, two-hand unit circulation, and continuous operation (with feeding device).

- Through the selection of the operation panel, not only the two molding processes of fixed range and constant pressure can be realized, but also the three process operation cycles of pad, pad and ejection can be realized.