What are the reasons and elimination methods of excessive noise in hydraulic drive of injection molding machine?
The severe wear of oil pump makes the noise of hydraulic transmission too large.Oil pumps should be serviced.
A. The internal surface of the stator may be seriously worn.
B. Bearing for rotor shaft damaged.
C. the blade is stuck and cannot slide normally.
D. The motor base of oil pump is not strong and produces vibration.
1.Circulating screen is blocked, and the oil pump is difficult to absorb.The filter screen should be cleaned.
2.Uncontrollable, too high or too low oil temperature can cause hydraulic transmission to fail.Pay attention to control the oil temperature in the range of 15 ~ 55 ℃.
3.Hydraulic oil with high viscosity and high flow resistance should be replaced with hydraulic oil with low viscosity.
4.The severe abrasion of all control valves in the hydraulic drive system, or the presence of foreign objects in the valve, results in improper operation of width, which is also a factor causing greater noise in the hydraulic drive.Repair as necessary.
5.There is too much air mixed in the turtle hydraulic oil. Be careful to drain the air from the pipe before normal production.
6.All landowners improper storage tank installation, sometimes produces vibration, or is the insufficient amount of hydraulic oil in the tank and return pipe mouth outside the liquid level in the hydraulic oil, bubbles, make oil mixed with air, etc., is also made of the noise reasons of hydraulic transmission.Full hydraulic oil should be added before production, and the liquid level should be kept at the oil level.
The hydraulic oil pressure instability and hydraulic work flow fluctuation reasons of hydraulic oil, largely related to the influence of the above content, can consult item by item analysis, find out the main reason, and for repair