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What is the reason for the slow motion of the four column hydraulic press? What is the treatment?

        Four column hydraulic press Based on the principle of hydraulic transmission, the actuator (cylinder, plunger or piston) has a simple structure and is easy to realize large working pressure, large working space and long working stroke. Therefore, it has strong adaptability and is easy to suppress large workpieces or long and high work. In daily work, sometimes found that the hydraulic press action will be slow, what is the reason for this, let's analyze it together.


 Four column hydraulic press


1. There is air in the cylinder of four column hydraulic press

When the action of the four column hydraulic press is slow, we should first consider that there is air in the hydraulic cylinder. Through the exhaust equipment of the machine, the corresponding exhaust operation should be interrupted, and whether there is air in the movement direction of the piston rod. If so, it may be that the sealing ring is defective, and the sealing ring should be changed in time.

2. Check whether the four column hydraulic press pump operates normally

The hydraulic pump may not work in time when the hydraulic pump seizes, and the hydraulic pump may not work in time.

3. Check the piston operation of four column hydraulic press

When the hydraulic cylinder of the four column hydraulic press with buffer device starts reversely intermittently, the piston will be interrupted temporarily or reversely, causing the action of the hydraulic press to be slow. This is because the orifice of one-way valve is too small, causing little hydraulic oil into the buffer chamber of the machine. When this kind of defect occurs, the orifice of one-way valve should be enlarged to add oil into buffer chamber.


 Illustration of four column hydraulic press


4. The piston movement speed of four column hydraulic press is high

When the speed of piston movement is too high, the steel ball of one-way valve will move, and then the orifice of one-way valve will be blocked, resulting in irregular action of hydraulic cylinder. In this case, the steel ball should be converted into a poppet valve core with pilot valve.

5. The hydraulic cylinder of four column hydraulic press is not sensitive

When the inner part of the rubber hose peels off, it will cause intermittent defects in the oil circuit and cause the hydraulic cylinder to act irregularly. Cleaning method: timely conversion of rubber hose.

The above is some causes of slow motion of four column hydraulic press and corresponding cleaning methods.