1. Check whether the lubrication parts of each equipment and the quality of the lubricating oil in the gearbox meet the standards, and supplement or add sufficient lubricating oil appropriately. The lubricating oil level should be at the high line of the marking line (L-CKC150 gear oil should be added in the gearbox).
2. The control box circuit is closed for power supply.
3. Start the lubrication hydraulic pump, input lubricating oil into each lubrication part, and check whether the working position of each lubricating oil is normal.
4. Check if there are any foreign objects inside the hopper and barrel, and if the magnetic frame inside the hopper is ready for operation.
5. Inch the lubricating oil pump motor to check if the rotation direction of the motor is the same as the required rotation direction of the pump. If it is correct, officially start the lubricating oil pump to check if the position of the lubricating oil spray is correct and if there is any leakage in the pipeline. After everything is normal, lubricate for 3 minutes.
6. Start the screw drive motor at low speed (the screw cannot be stopped at high speed, and should immediately run at high speed when not charged, and the knob must be reset to zero before stopping). Observe whether there are any abnormalities in the swing needles of the ammeter and voltmeter on the control box, and the power consumption should not exceed 15% of the rated value (the idle time should not exceed 3 minutes).
7. Check if the rotation direction of the screw is correct and if there is friction between the screw and the barrel.
8. Inspect the oil, water, and gas pipelines for leakage, and check whether the connection methods and flow directions are correct.
9. Stop the rotation of the screw, exit the screw, and check for scratches or grooves on the working surface of the screw and barrel. If any, replace the equipment.
10. Screw work adjustment detection test, use a tachometer to measure the maximum and minimum speed of the screw transmission shaft, and compare with the instructions.
11. Is the emergency stop button on the testing equipment working accurately and reliably.
12. After checking everything is normal, reinstall the screw.
13. Heating and heating up of the cable extruder barrel, operating sequence:
(1) Heating and heating of each section of the machine barrel, adjusting the temperature control instrument according to the extrusion process temperature requirements, is the responsibility of a dedicated person, and others cannot set or modify process parameters without authorization.
After heating to the required temperature for the process, maintain a constant temperature for 1 hour and record the heating time.
⑶ Use a mercury thermometer to detect the temperature of each section of the machine barrel, and verify the difference between the adjusted instrument temperature and the measured temperature of the mercury thermometer.
Can the heating resistor circuit breaker alarm device in the heating device of the testing machine accurately alarm.
Turn off the heating power supply of the barrel, start the cooling device separately, and check the working condition of the cooling system. The water flow should be smooth and there should be no leakage.