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Why does a vertical injection molding machine make noise during operation?

When a vertical injection molding machine is operating, it may generate noise, which usually indicates that some parts of the machine are damaged or improper adjustments have been made by the operator. If there is noise, the cause should be identified promptly and repairs should be carried out in a timely manner.

Insufficient hydraulic oil:

If the hydraulic oil in the vertical injection molding machine’s oil tank is insufficient, the oil pump is prone to absorbing external air or contaminants, leading to pump blockage. This exacerbates the oil shortage and causes bubbles in the oil to impact the blades, resulting in noise. In this case, the oil level should be checked to prevent the entry of air and contaminants.

High viscosity:

This refers to the viscosity of the hydraulic oil. If the viscosity of the hydraulic oil is high, it generates significant resistance during flow. Therefore, regular inspections and timely replacement of the hydraulic oil are necessary in such situations.

Check concentricity:

When operating on a vertical injection molding machine, if there is noise, it is likely due to damaged parts such as motor blades or oil pump bearings. Under the influence of concentricity deviation, noise will occur. To address this issue, the operator needs to inspect the concentricity or replace the damaged parts.

If the above points are not the main reasons for the noise, considerations should be given to whether the filter element is blocked or worn. Additionally, it is important to ensure that the working current is sufficient and stable, as insufficient current can also generate noise.

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