What is the cause of the abnormal noise of an injection molding machine?

1. The most common problem of abnormal sound of injection molding machine is that the hydraulic oil in the box is insufficient, which causes the exhaust bubbles in the oil to hit the blades, thus causing abnormal sound. The direct solution is to check the oil volume, prevent air inhalation and clean the oil filter.

2. If the viscosity of the hydraulic oil of the injection molding machine is too high, it will increase the flow resistance and produce noise, so it is necessary to replace the appropriate hydraulic oil.

3. As the bearing or blade of oil pump or motor is damaged and the concentricity deviation of coupling causes noise, it is necessary to adjust concentricity or replace parts.

4. The response of the directional valve is out of order, but the function is still there. For example, the valve core is worn, internal leakage, burr blockage, and inflexible movement. The failure of the solenoid valve due to insufficient current will also produce noise. The solution is to clean the valve core, replace the worn valve core with a new one, and keep the current stable and sufficient.

5. When the hydraulic components are damaged or the oil pipeline is blocked, the high-speed flow of hydraulic oil will cause noise.

6. In case of mechanical failure, bearing wear or lack of lubricating oil or loose parts, find out the cause and fasten or replace the parts to ensure sufficient lubricating oil.