Suggestions for Starting the Injection Molding Machine with Long Downtime

Tips for starting the injection molding machine with long downtime

If the injection molding machine has been shut down for a long time, then you must pay attention to the following issues before starting, otherwise it will bring hurt to the injection molding machine.

1. Open the cooling water valve

Before the machine heats up and starts production, open the cooling water valve and observe whether the water channel is unblocked.

2. Start the oil pump motor

Close the power switch on the side of the electrical box in the machine bed, turn on the internal power supply. Then, press the motor start button on the panel to start the oil pump motor.

3. Let machine run for a few minutes without loading

For the machine that is used for the first time and has not been used for a long time, after the oil pump is started, it must be run for a few minutes before starting to operate.

4. Judge the quality of the electric heating band

Turn on the barrel heating switch and the electric heating power. Adjust the thermostatic nozzle and temperature controller. Set the temperature, observe the current of the ammeter. And finally check the electric heating band.

5. Carry out the test-run

The test-run should be carried out from manual to semi-automatic to fully automatic. At the same time, check whether the important fastening bolts are loose, and stop immediately if any abnormality is found. After confirming that it is normal or troubleshooting, then carry out the test run.

6. Barrel clean

The barrel should be cleaned when the processing is stopped or when the material is changed. The cleaning should be carried out under the condition that the barrel is heated. When the cleaning is completed, the heating switch should be turned off immediately. The cleaning is particularly important for the processing of easily decomposable plastics.


The injection unit must be retreat when cleaning

The temperature setting when the two raw materials alternate should be adjusted according to the requirements of high-melting materials

Use polystyrene to clean the decomposed materials

7. When processing is stopped

First turn the action operation switch to the manual position. Next, place other action switches in the off position and turn off the barrel heating. Press the motor stop button to turn off the oil pump motor. Finally turn off the power switch.

At last, when there is a failure shortly after the machine is turned on, you must let a professional maintenance engineer to check what the situation is to avoid man-made damage to the machinery and equipment.

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