I. Paper Feeding and Positioning Techniques
1. "Three-Point Alignment" Method: Ensure the center lines of the unwinding shaft, guide rollers, and rewinding shaft are aligned to prevent paper web deviation.
2. Low-Speed Paper Feeding: Adjust the speed to a crawling speed (10–20 m/min) during the initial paper feeding to facilitate observation of the path smoothness.
3. Using Guide Markers: Mark key guide rollers to help quickly determine if the paper edges are aligned.
II. Tension Control Techniques
1. Segmented Tension Adjustment: Set different tensions for startup, operation, and shutdown. For example, set it to 60% of the rated value during startup and increase it to 100% after stabilization.
2. Adjustment Based on Material: Use low tension (20–30 N) for films and appropriately increase it (40–60 N) for paper to prevent stretching deformation or wrinkling.
3. Real-Time Monitoring of Tension Fluctuations: View the tension curve through the touchscreen. If any abnormalities are detected, stop the machine immediately and check the sensors or pneumatic system.
III. Cutting Tool Usage and Maintenance Techniques
1. Regular Blade Sharpening: Establish a "sharpen before replacement" system, performing blade edge maintenance every 80 hours of operation to extend service life.
2. Correct Blade Installation: Pay attention to direction and clearance during installation. Leave a gap of 10-15% of the material thickness between the blades to avoid excessive tightness, friction, and heat generation.
3. Blade Replacement During Shutdown: Adjusting or replacing the cutter while the equipment is running is strictly prohibited. Power must be disconnected and a warning sign displayed.
IV. Abnormality Prediction and Handling Techniques
1. Listen for Fault Diagnosis: A "humming" noise during operation may indicate bearing wear; a "clicking" sound suggests loose transmission components.
2. Observe the Roll Shape: If a "trumpet-shaped" or "bamboo shoot-shaped" winding occurs, immediately check the web guiding system and pressure roller pressure.
3. Emergency Handling of Paper Breakage: After a paper breakage, stop the machine, clean up the remaining paper, and ensure the joint is straight and wrinkle-free when using double-sided tape to reconnect the paper before restarting.
V. Optimization of Daily Operational Habits
1. Clean photoelectric sensors every shift: Wipe the sensor head with an alcohol swab to prevent dust from affecting the accuracy of the correction.
2. Record operating parameters: Save the optimal parameter template for each product for direct use in the next production run, reducing debugging time.
3. Shift handover checklist system: List 10 mandatory check items, including air pressure, lubrication, and tool status, to ensure accountability.
