(1) Daily maintenance is a periodic routine task that does not take up the operating time of the machine equipment and is generally completed during the start-up period. The key to the daily maintenance of an extruder lies in cleaning the equipment, lubricating all moving parts, tightening the easily loose threaded parts, immediately inspecting and adjusting the motor, control instruments, all working parts and pipelines, etc.
(2) Regular maintenance and repair are usually carried out after the extruder has been running continuously for 2,500 to 5,000 hours and then shut down. The equipment needs to be disassembled for inspection, testing, and assessment of the damage of key components, and replaced when the specified damage limit has been reached Repair damaged parts and components.
(3) Running the machine empty is not allowed to prevent the screw and cylinder from rolling burrs.
(4) If the extruder makes abnormal noises during operation, it should be stopped immediately for inspection or maintenance.
(5) Firmly prevent metal materials or other debris from falling into the hopper to avoid damaging the screw and barrel. To prevent iron debris from entering the barrel, a magnetic component or magnetic frame can be installed at the material feeding inlet to the barrel. To avoid debris falling in, make sure the materials are screened beforehand.
(6) Pay special attention to keeping the manufacturing environment clean, and do not allow waste impurities to mix with the materials, which could block the filter plate, affect product output and quality, and increase resistance on the machine head.
(7) When the extruder will not be used for a long period of time, anti-corrosion grease should be applied to the working surfaces of the screw, barrel, and machine head. Small screws should be suspended in the air or placed in a dedicated wooden box, and leveled with wooden blocks to prevent deformation or damage to the screw.
(8) Calibrate the temperature control electronic instruments on time, and check the accuracy of their adjustments and the responsiveness of their control.
(9) The maintenance of the extruder gearbox is the same as that of a standard reducer. The main task is to check for damage and malfunction of gears, bearings, and other components. The gearbox should use the lubricating oil specified in the equipment manual, and add oil according to the prescribed oil level. Too little oil results in insufficient lubrication, reducing the service life of components; too much oil causes excessive heat and energy consumption, and the oil is easily degraded, which also results in lubrication failure and damages components. Any oil leakage from the gearbox should be addressed immediately by replacing the seals (or gaskets) to ensure the proper amount of lubricating oil.
(10) The inner walls of the cooling water pipes attached to the extruder are prone to scale formation, while the outer walls are prone to corrosion and rust. When conducting maintenance and repair, a thorough inspection should be carried out. Excessive scale can clog pipelines and fail to achieve the cooling effect. Severe corrosion can cause water leakage. Therefore, descaling and anti-corrosion cooling measures must be adopted during maintenance and repair.
(11) For DC motors that drive the screw to rotate, it is crucial to check the damage and contact condition of the brushes. Also, it is necessary to frequently inspect whether the insulation resistance value of the motor is above the specified value. In addition, it is necessary to check whether the connecting wires and other components are rusty and take protective measures.
(12) Designate a specific person to be responsible for the maintenance and repair of machinery and equipment, and record in detail the situation of each maintenance and repair in the factory's equipment maintenance management file.
(2) Regular maintenance and repair are usually carried out after the extruder has been running continuously for 2,500 to 5,000 hours and then shut down. The equipment needs to be disassembled for inspection, testing, and assessment of the damage of key components, and replaced when the specified damage limit has been reached Repair damaged parts and components.
(3) Running the machine empty is not allowed to prevent the screw and cylinder from rolling burrs.
(4) If the extruder makes abnormal noises during operation, it should be stopped immediately for inspection or maintenance.
(5) Firmly prevent metal materials or other debris from falling into the hopper to avoid damaging the screw and barrel. To prevent iron debris from entering the barrel, a magnetic component or magnetic frame can be installed at the material feeding inlet to the barrel. To avoid debris falling in, make sure the materials are screened beforehand.
(6) Pay special attention to keeping the manufacturing environment clean, and do not allow waste impurities to mix with the materials, which could block the filter plate, affect product output and quality, and increase resistance on the machine head.
(7) When the extruder will not be used for a long period of time, anti-corrosion grease should be applied to the working surfaces of the screw, barrel, and machine head. Small screws should be suspended in the air or placed in a dedicated wooden box, and leveled with wooden blocks to prevent deformation or damage to the screw.
(8) Calibrate the temperature control electronic instruments on time, and check the accuracy of their adjustments and the responsiveness of their control.
(9) The maintenance of the extruder gearbox is the same as that of a standard reducer. The main task is to check for damage and malfunction of gears, bearings, and other components. The gearbox should use the lubricating oil specified in the equipment manual, and add oil according to the prescribed oil level. Too little oil results in insufficient lubrication, reducing the service life of components; too much oil causes excessive heat and energy consumption, and the oil is easily degraded, which also results in lubrication failure and damages components. Any oil leakage from the gearbox should be addressed immediately by replacing the seals (or gaskets) to ensure the proper amount of lubricating oil.
(10) The inner walls of the cooling water pipes attached to the extruder are prone to scale formation, while the outer walls are prone to corrosion and rust. When conducting maintenance and repair, a thorough inspection should be carried out. Excessive scale can clog pipelines and fail to achieve the cooling effect. Severe corrosion can cause water leakage. Therefore, descaling and anti-corrosion cooling measures must be adopted during maintenance and repair.
(11) For DC motors that drive the screw to rotate, it is crucial to check the damage and contact condition of the brushes. Also, it is necessary to frequently inspect whether the insulation resistance value of the motor is above the specified value. In addition, it is necessary to check whether the connecting wires and other components are rusty and take protective measures.
(12) Designate a specific person to be responsible for the maintenance and repair of machinery and equipment, and record in detail the situation of each maintenance and repair in the factory's equipment maintenance management file.