(1) Daily maintenance is a regular routine work that does not take up equipment operating hours and is usually completed during startup. The focus is to clean the machine, lubricate the moving parts, tighten the threaded parts that are easy to loosen, check and adjust the motors, control instruments, various working parts and pipelines in time.

(2) Regular maintenance is generally carried out after the extruder runs continuously for 2500-5000h and then stops. The machine needs to be disassembled for inspection, measurement, Identify the wear of main parts, replace parts that have reached the prescribed wear limit, and repair damaged parts.

(3) The empty machine is not allowed to run, so as to prevent the screw and machine from rolling.

(4) If abnormal noise occurs during the operation of the extruder, it should be shut down immediately for inspection or repair.

(5) Strictly prevent metals or other debris from falling into the hopper to avoid damage to the screw and barrel. In order to prevent iron debris from entering the barrel, a magnetic absorption component or a magnetic frame can be installed at the material inlet of the barrel to prevent debris from falling into the barrel. The material must be screened in advance.

(6) Pay attention to a clean production environment, and do not mix garbage and impurities into the material to block the filter plate, which will affect the output and quality of the product and increase the resistance of the machine head.

(7) When the extruder needs to be stopped for a long time, it should be coated with anti-rust lubricating grease on the working surface of the screw, the machine shaft, and the machine head. The small screw should be hung in the air or placed in a special wooden box, and be leveled with wooden blocks to prevent the screw from deforming or bumping.

(8) Regularly calibrate the temperature control instrument to check the correctness of its adjustment and the sensitivity of control.

(9) The maintenance of the reducer of the extruder is the same as that of the general standard reducer. Mainly check the wear and failure of gears and bearings. The gearbox should use the lubricating oil specified in the machine manual, and add the oil according to the specified oil level. If the oil is too little, the lubrication will not be reversed, and the service life of the parts will be reduced; Deterioration also makes lubrication ineffective and causes damage to the parts. The sealing gasket (ring) should be replaced in time for the oil leakage part of the reduction box to ensure the amount of lubricating oil.

(10) The inner wall of the cooling water pipe attached to the extruder is prone to scale formation and the exterior is prone to corrosion and rust. Careful inspection should be done during maintenance. Excessive scale will block the pipeline and fail to achieve the cooling effect. If the rust is serious, water leakage will occur. Therefore, measures of descaling and anti-corrosion cooling must be taken during maintenance.

(11) For the DC motor that drives the screw to rotate, it is necessary to check the wear and contact of the brush. The insulation resistance of the motor should also be measured frequently. In addition, check whether the connecting wires and other parts are rusty, and take protective measures.

(12) Designate a person to be responsible for equipment maintenance. And the detailed records of each maintenance and repair situation are included in the factory equipment management file.