What is the reason why the servo hydraulic press cannot rise normally?

The application of the press machine in the industry is very wide, the servo hydraulic press is a good replacement of the traditional mechanical pressure power source, and makes a great contribution to the industrial production efficiency, but what is the main reason for the failure to rise normally due to pressure in the use process? The following reasons are sorted out for everyone:

1, the hydraulic meter is broken, replace the new hydraulic meter;

2, servo oil press oil leakage. First, carefully check whether there is obvious oil leakage on the surface of the machine (hydraulic cylinder, hydraulic pipe that plays a connection role,); If not, that is the piston oil seal is damaged, this first put around, because unless it is really unable to find a solution will be opened to replace the hydraulic cylinder seal ring;

3, common sense operation error. Although this phenomenon is relatively simple, it should also cause the attention of the servo hydraulic press operator, such as the three-phase connection, the height of the oil tank is not hit the specified value, and the pressure regulating valve is not adjusted (that is, the relief valve is not adjusted). This phenomenon generally occurs when new employees first use the servo hydraulic press;

4. The hydraulic valve is broken, the valve is blocked, the internal spring is stuck with impurities, and the pressure of the servo hydraulic press can not be returned. If it is a manual reversing valve, remove it and wash it (unscrew the big screw above to take out all the parts inside and wash them again with an air gun to blow the valve, install it back in turn);

If it is an integrated hydraulic valve, it is necessary to disassemble the corresponding block, check and clean it, and install it in accordance with the original method;

5, the power of the servo hydraulic press is not good. Generally appear in the older machine, either the hydraulic pump loss, or the motor aging, then you can stick the palm on the outer wall of the inlet pipe (that is, the hydraulic pump connected to the oil tank of the pipe), start the servo hydraulic press, the machine limits the workpiece assuming that the suction is very large, the hydraulic pump is no problem, and the opposite is the problem; Motor aging this is relatively rare, if the motor is really aging, there will be a lot of noise, because the motor can not afford the oil pump, the motor is suppressed, so the sound will be very large.