Laboratory blowing machine inspection and maintenance methods

1 check traction speed, control film thickness.

2 observe and adjust the thickness uniformity of the film.

3 check the air cylinder pressure, can not be too high, but there should be standby pressure.

4 check the raw material and mix evenly.

5 check whether the raw material impurities, especially in a timely manner with a magnet check iron mixed.

6 check the lubrication condition of the compressor and air compressor.

7 regularly check the operation of the motor temperature rise and mechanical transmission.

Film blowing machine maintenance - targeted maintenance projects

1 feeding machine system: to clean up the filter, check the negative pressure feeding system with no leakage.

2 extruder system:

Observe the pressure meter and the main motor current, clean up the screen changer

Check the gear box, screw, the main motor has no noise and overheating

Check the frequency of frequency converter, current, temperature rise, clean up the motor, converter dust.

Calibration thermocouple measurement and actual temperature error.

Adjust the position of extruder, adjust the slot wheel to ensure the angle and level of extruder.

3 die head system:

Two heating method is adopted to avoid overheating.

The use of pure copper scraper to clean the deposit, cleaning the membrane, and reducing the influence of the precipitates on the bubble.

Protect the felt after the shutdown, avoid the damage of the mould. (upper blower adopts this method)

Check the temperature zone and the temperature of the temperature and the temperature of the heater.

Correcting the die head level and matching the center point with the traction.

The mould screws use torque wrench, torque according to the rules of operation of the high temperature part of the screw, using molybdenum disulfide grease.

The prohibition of welding, cutting die.

4 wind ring maintenance: timely cleaning debris and dust in the wind ring

5 traction device maintenance: herringbone folded without pollution, clamping traction (cooling) roller pressure is appropriate, no condensation water, flat roll flexible operation.

6 corona processor maintenance:

Regularly clean high voltage transformer, discharge roller, discharge frame, electric control box, adjust discharge gap;

Check the equipment humidity before starting, avoid the short circuit of the discharge frame, check the operation temperature of the discharge roller bearing,

Replace silicone tube in time.

7 electrical maintenance

To ensure the stability and reliability of power supply, and the performance parameters,

Maintain appropriate temperature, humidity, maintain good grounding, pay attention to eliminate electrostatic hazards.

Regularly remove radiator dust.

Maintenance of core components.