Paper Sheeter Operating Procedures, Maintenance, And Troubleshooting Guide
Paper Sheeter Operating Procedure (12 Steps)
Step 1
Receive the production work order and review the required specifications, quantities, and cutting requirements.
Step 2
Turn on the main power supply and start the air compressor.
Step 3
Enter the required production parameters on the machine's touch screen, including sheet length, sheet quantity, ream quantity, label length, and other specifications. Adjust the knife head to the required angle according to the scale.
Step 4
Move the rack-mounted pressure roller to the correct position. Select the appropriate pallet and raise the delivery table to the required height.
Step 5
Load the parent paper roll onto the unwind stand and secure it firmly.
Step 6
Align the paper roll according to the scale markings on the unwind shaft. Thread the paper web through the guide rollers until it reaches the feed pressure roller, then engage the rubber pressure roller.
Step 7
Lock the unwind brake to maintain proper web tension.
Step 8
Start the main machine at low speed and gradually accelerate. Turn on the automatic counting system after confirming stable operation.
Step 9
If wrinkled sheets appear during startup, remove the defective sheets manually and deduct the rejected quantity from the control panel. Once the paper quality becomes stable, activate the automatic stacking system.
Step 10
Increase the machine to normal production speed.
Step 11
During production, continuously monitor the paper condition from the front, rear, left, and right sides of the machine. If any quality issue is detected, stop the machine immediately to prevent material waste.
Step 12
Always ensure the correct sheet quantity is maintained. Never place your hands inside the machine while it is running, as this may result in serious injury.
Daily Maintenance
Important Safety Notice
Always disconnect the main power supply before cleaning or servicing the machine. Ensure the compressed air is completely free of moisture before using it to clean electrical components.
Keep the machine clean and lubricate all required components regularly.
At the end of each working day, drain the accumulated water from the air compressor. Before starting production the next day, close the compressor drain valve.
Apply grease to the machine monthly and clean dust from all electrical components.
Troubleshooting Guide
Problem 1 - Wrinkled Paper After Sheeting
If the machine normally produces accurate sheets but wrinkles appear during production, inspect the following items:
- Check whether the brake air pressure is correctly adjusted.
- Insufficient brake pressure may cause wrinkles.
- Excessive brake pressure may cause both wrinkles and short sheet length.
- Check whether the inlet pressure roller air pressure is balanced.
- Improper pressure adjustment may also cause wrinkling.
- Inspect each of these factors carefully and correct the settings before resuming production.
Problem 2 - Inconsistent Sheet Length
If the machine normally operates correctly but the finished sheets vary in length, perform the following inspections:
- Verify that the compressed air pressure reaches the specified operating value.
- Check for air leakage in the brake air lines.
- Inspect whether the brake disc and brake pads make proper contact.
- Check whether the timing belt is loose or has damaged teeth.
- Inspect the transmission shaft bearings for excessive wear or vibration.
- Check whether the feed roller drive gears are loose.
If all pneumatic, transmission, bearing, gear, and timing belt components are functioning normally but sheet length remains inconsistent, inspect the rotary encoder.
Check whether the encoder is loose, sticking, or rotating irregularly. If any abnormality is found, replace it with an encoder of the same model and specifications. Reconnect the wiring according to the original color sequence and ensure all connections are secure.
Approximately 97% of paper sheeter length control systems use pulse encoder feedback. Stable power supply voltage and proper machine grounding are also essential. Good grounding helps eliminate electrical interference and ensures reliable machine operation.
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