CPP Multiple Layer CO-Extrusion Cast Film Production Line is a professional equipment for producing multi-layer plastic films, and its daily maintenance involves mechanical, electrical, temperature control and other systems. Here are the detailed maintenance contents:
I. Daily Maintenance Items
Daily Maintenance:
Clean residual materials from the die head using copper scrapers to avoid damaging the flow channels
Check whether electrical components and circuits in each electrical cabinet are aging, and whether terminals, screws and other connectors are loose
Check the compressed air pressure and adjust it to the standard required value
Weekly Maintenance:
Check the screw wear condition and measure the screw gap not exceeding 0.3mm
Thoroughly clean the fans and filters in each electrical cabinet to prevent dust accumulation from affecting heat dissipation and causing short circuits
Monthly Maintenance:
Replace seals and calibrate the temperature control system to ensure that the temperature difference between each heating zone ≤ ±2℃
Perform moisture-proof treatment inside the electrical cabinet using desiccants or moisture-proof sprays
Quarterly Maintenance:
Perform lubrication maintenance on the transmission system, controlling the oil injection amount to 2/3 of the bearing cavity volume
Replace seals and calibrate the temperature control system to ensure that the temperature difference between each heating zone ≤ ±2℃
II. Specific System Maintenance Methods
Mechanical Component Maintenance
Main Transmission Chain Maintenance:
Regularly adjust the tightness of the main shaft drive belt to prevent missing rotation caused by belt slippage
Replace lubricating oil once a year and clean the filter
Ball Screw Nut Maintenance:
Clean the old grease from the screw every six months and apply new grease
Check and tighten bolts, nuts, pins and other connectors to prevent loosening
Tool Magazine and Tool Changer Maintenance:
Ensure that tools are installed in place and securely, and check whether the locks on the tool holders are reliable
Prohibit installing overweight or excessively long tools into the tool magazine
Electrical System Maintenance
Power Supply Maintenance:
Regularly check whether power connections are loose and whether voltage is within the rated range
It is recommended to install voltage stabilizers or UPS (uninterruptible power supply)
Signal Interference Handling:
Reduce the carrier frequency of the frequency converter
Add shielding layers or magnetic rings to signal lines, and separate power lines and signal lines
Aging Inspection of Components:
Leave heat dissipation space around servo drives
Replace vulnerable components such as electrolytic capacitors according to manufacturer recommendations
Temperature Control System Maintenance
Cleaning Maintenance:
Do not use acidic, alkaline or other corrosive liquids or water-containing cloths for wiping
Regularly replace and clean media, and clean external surfaces
Calibration and Testing:
Regularly calibrate temperature sensors
Observe heating and cooling speeds and whether target temperatures can be stably maintained
Component Replacement:
Add or replace lubricating oil in circulating pumps in a timely manner
Check wear conditions of mechanical transmission parts
III. Maintenance Cycle and Standards
| ntenance Item | Cycle | Standard Requirements |
|---|---|---|
| Gear Oil Replacement | Initial 300-500 hours, then every 4000-5000 hours | Use CK220/320 gear oil |
| Lubricating Oil Replacement | Once a year | Clean filter and replace lubricating oil |
| Screw Inspection | Weekly | Screw gap not exceeding 0.3mm |
| Temperature Control Calibration | Monthly | Temperature difference between heating zones ≤ ±2℃ |
IV. Safety Precautions
Personnel Requirements:
Operators must be professionally trained and qualified
Prohibit unqualified personnel or minors from operating blown film machines
Personal Protection:
Wear tight-fitting pure cotton work clothes, high-temperature resistant nitrile gloves (temperature resistance ≥200℃) and anti-splash goggles
Prohibit wearing metal accessories such as necklaces, bracelets and watches
Pre-startup Inspection:
Check whether equipment housings are intact and safety protective covers are securely installed
Verify that equipment grounding devices are reliable, and prohibit starting equipment without grounding
Operating Regulations:
Prohibit working under the influence of alcohol, fatigue or sedatives
Confirm good physical condition before work, without dizziness, fatigue or other discomforts
Through standardized daily maintenance, the equipment service life can be extended by about 30%, while reducing the occurrence of quality issues such as thickness deviation. It is recommended to establish complete maintenance records, and have professional technicians perform maintenance and inspections according to the manufacturer’s maintenance cycle and service plan.
Post time: Oct-24-2025