Annual scheduled maintenance of the extruder


Time:

2017-03-11

1. ① Inspect the V‑belt drive for wear on the belt and pulleys; verify the center distance and adjust the belt tension to ensure proper tension—replace any worn belts. ② Remove the screw and inspect the barrel and screw for wear. Minor scratches or surface roughness can be repaired with an oilstone or sandpaper, restoring the inner and outer diameters of the barrel and screw to their original dimensions. ③ Open the gearbox and bearing covers, check the lubricant quality and the amount of metal particles present, clean the lubrication system as needed, and replace the oil or filter if required. ④ Examine the gears and bearings for wear; severely worn gears should be measured and documented. Based on your requirements, prepare a spare parts manufacturing and procurement plan accordingly.

 1. ① Inspect V-belt drives for wear on the V-belts and pulleys; check the center distance and adjust the V-belt drive to ensure proper belt tension; worn V-belts should be replaced.

 

② Remove the screw and inspect the barrel and screw for wear. Minor scratches or surface roughness can be repaired with an oilstone or sandpaper, ensuring that the inner and outer diameters of the barrel and screw meet the required dimensions.

 

③ Open the gearbox and bearing covers, inspect the lubricant for quality and the presence of metal particles, clean the lubrication system as needed, and replace the oil or install an oil filter.

 

④ Inspect gears and bearings for wear; severely worn gears shall be measured and documented. Based on your requirements, prepare spare parts and develop a procurement plan to support the upcoming maintenance and replacement work.

 

II. Maintain the vacuum pump, clean the pipelines, and calibrate the vacuum gauge.

 

⑥ Check and calibrate the barrel and mold temperatures (using a mercury thermometer to measure water). Display the temperature differences on the control panel to ensure proper temperature management during processing.

 

⑦ Adjust and test the safety alarm devices, verifying their accuracy and reliability.

 

⑧ Testing: verify that water, natural gas, and oil pipelines are open; clean up and repair leaks; and seal any blockages.

 

⑨ Inspect and adjust the operating positions of the electric heating device, the cooling fan, and the safety guard to ensure they function properly and efficiently.

 

⑩ Record the specifications of oil glands, bearings, and V-belts, as well as the procurement plan for spare parts.