I. Prevention of Failures in the Main Motor and Transmission System
1. Record the main motor's current, vibration value, and temperature rise curve daily. Immediately stop the machine and investigate any abnormal fluctuations.
2. Periodically check the gearbox oil level and quality, and change the lubricating oil regularly to prevent gear breakage caused by dry friction due to insufficient oil.
3. Tighten the motor wiring terminals monthly to prevent overheating due to loose connections. Regularly test emergency stop and other safety interlock devices.
II. Prevention of Failures in the Screw and Barrel
1. Screen the raw materials with a metal detector before each shift to prevent hard foreign objects from entering the barrel and causing screw scratches.
2. Regularly check the clearance between the screw and barrel. Increase the frequency of checks for highly abrasive formulations such as glass fiber.
3. Before stopping the machine, empty the barrel of any residual material to prevent prolonged high-temperature residence, degradation, and carbonization.
III. Prevention of Failures in the Die Head and Mold
1. Strictly implement segmented gradient temperature control to prevent localized overheating that could cause material scorching and blockage of the flow channels.
2. Disassemble the mold while it's still hot during each production change, thoroughly clean any residual paste from the runner, and evenly polish the runner surface.
3. Regularly check the mold's fastening bolts to prevent loosening during operation, which could lead to uneven material output and profile misalignment.
IV. Auxiliary Equipment Component Fault Prevention
1. Daily clear the vacuum pump inlet and remove accumulated water from the pipeline; regularly check the aging of the vacuum gasket.
2. Check the wear of the traction rubber rollers every shift, adjust the clamping force promptly, and regularly replace dull cutting blades.
3. Clean the cooling water filter weekly to prevent scale buildup that could cause uneven cooling and profile deformation.
V. Temperature Control and Electrical System Fault Prevention
1. Weekly use a multimeter to verify the working status of each section's heating coils and thermocouples, and replace any faulty components promptly.
2. Regularly calibrate the temperature control instrument parameters to avoid excessive temperature deviations that could lead to poor material plasticization or overheating and decomposition.
3. Regularly clean the electrical cabinet to prevent dust accumulation that could cause poor heat dissipation and component overheating and burnout.
