I. Common Errors During Pre-Startup Preparation
1. Failure to Check Air Pressure: Air pressure below 0.6MPa or excessively high without adjustment affects the normal operation of the air shaft, leading to insecure core fixation.
2. Offset in Paper Roll Installation: The mother roll is not installed in a centered position, causing misalignment during subsequent paper feeding and uneven winding.
3. Incorrect Paper Feeding Path: Failure to feed paper according to the equipment's instructions results in uneven stress on the paper web or paper jams.
II. Errors Related to Parameter Settings
1. Inappropriate Tension Setting: Excessive tension can easily break the paper, while insufficient tension leads to loose winding and wrinkling. Different paper types require corresponding tension settings (e.g., 45N is recommended for cigarette packaging paper).
2. Exceeding Operating Speed Limits: Setting the speed beyond the 200m/min limit increases the risk of paper breakage and equipment vibration.
3. Cutter gap not adjusted: Failure to adjust the blade gap according to the material thickness (should be 10-15% of the material thickness) leads to burrs or blade wear.
III. Operational Errors
1. Operating with defects: Continuing production despite slight abnormal noises or vibrations may cause bearing damage or roller imbalance.
2. Improper handling of paper breaks: Reaching in to clean broken paper or adjust guide rollers while the equipment is running poses a serious safety hazard.
3. Ignoring correction system alarms: Failure to respond promptly to correction sensor alerts leads to width deviations in the entire roll of product.
IV. Maintenance and Care Neglect
1. Inadequate lubrication: Failure to regularly lubricate transmission components and bearings accelerates mechanical wear.
2. Incomplete cleaning: Failure to clean dust from the blade grooves, guide rails, and photoelectric sensor mirrors after shutdown affects detection accuracy and operational stability.
3. Neglecting periodic calibration: Long-term neglect of tension and pressure sensor calibration leads to control inaccuracies.
V. Human Error Management Issues
1. Unlicensed Operation: Unauthorized operation of electrical systems or modification of PLC programs by non-professionals can easily lead to system malfunctions.
2. Failure to Record Fault Information: Failure to record the cause and measures after troubleshooting hinders subsequent preventative maintenance.
