Abnormal noise treatment during injection molding machine operation

- May 13, 2019-

Abnormal noise treatment during injection molding machine operation

There are some possible reasons for abnormal noise in the injection molding machine. How to solve it, please see below for details.

First, injection molding machine oil pump noise vibration

The cause of the failure:

1. The injection pump oil pump motor is installed differently.

2. The coupling is loose.

3. The internal fault of the oil pump.

4. If the oil level is too low, draw air from the oil filter or joint connection into the oil.

5. Take in air from the motor at the moving shaft.

6. The oil clogging the oil filter net.

7. Loosen the return line of the injection molding machine. Inhale the air or the oil pipe on the oil surface and mix the air into the oil.

Method of exclusion:

1. Concentricity should be adjusted to within 0.1MM.

2. Correct the coupling.

3. Repair or replace the oil pump.

4. Increase the oil volume above the filter oil and joint position of 400mm.

5. Replace the rotating shaft seal.

6. Clean the oil filter and filter the oil.

7. Clean the oil filter and filter the oil.

8. Lock the oil return line and insert the machine back into the oil pipe to extend into the oil level.

Second, injection molding machine motor noise

The cause of the failure:

1. The motor bearing of the injection molding machine is damaged.

2. The motor coil winding is faulty.

3. The motor of the injection molding machine is wired incorrectly, and the noise increases when the system pressure rises.

Method of exclusion:

1. Replace the connecting bearing.

2. Replace or repair the motor.

3. Refer back to the wiring diagram wiring.