Injection Molding Machine Hydraulic System Maintenance

2021-10-20


Hydraulic maintenance steps of injection molding machine:

1. Hydraulic oil volume

Lack of oil will cause many problems, such as the easy rise of injection molding machine oil temperature and the problem of oil dissolving in air, which will affect the oil quality and the work of the injection molding machine hydraulic system. So what caused the lack of oil? It is usually caused by injection molding machine oil leakage or loss during repairs. In this case, we should check the possible leaks in normal times. Replace the injection molding machine worn seals as soon as possible, and loosen the joints and tighten them. Pay special attention to checking the oil level in the injection molding machine fuel tank after repairing.


2. Hydraulic oil temperature

The ideal working temperature of the injection molding machine hydraulic system is between 45°C and 50°C, which is determined according to the viscosity of the selected injection molding machine pressure oil, but the change of oil temperature will drive the change of viscosity, and the components of the system will also be affected, so as to control the accuracy and response. Sensitivity decreases at the same time, which is more common in precision injection molding machine. Too high an injection molding machine temperature will accelerate the aging of the seal, causing it to harden and cracked. And too low an injection molding machine temperature will consume a lot of processing energy and reduce the operating speed. Therefore, it is necessary to always pay attention to the temperature of the injection molding machine hydraulic oil.


3. Hydraulic oil quality

Oxidation stability is one of the chemical properties of injection molding machine hydraulic oil. The most important factor that determines the life of injection molding machine hydraulic oil is oxidation, that is, oxidation will produce insoluble materials such as wood tar, which will cause pollution of the hydraulic system And the problems such as the worn of injection molding machine hydraulic components, the reduction of various gaps, , the plugging of small holes, and finally the injection molding machine hydraulic system will malfunction. The oxidation rate of injection molding machine hydraulic oil is affected by its own factors, of which temperature is the main factor. Therefore, it is necessary to use suitable injection molding machine hydraulic oil and check the oxidation rate of injection molding machine hydraulic oil regularly. Therefore, active oil change is necessary.


4. Oil filter cleaning

Every once in a while, the injection molding machine oil filter must be checked whether to be cleaned to keep the oil suction pipe unobstructed.


5. Cooler cleaning

Clean the injection molding machine cooler once a year, or decide whether to clean it according to the specific situation, such as whether the working capacity is reduced, the inside of the injection molding machine cooler is blocked, and the water used for cooling is preferably soft (mineral-free). The correct maintenance of the injection molding machine will give it longer life time.

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