1. Focusing only on dust removal during winding, neglecting slitting area cleaning.
Many operators only use the dust-collecting roller at the winding end, ignoring that the area near the slitting blade assembly is where the most particles are generated. Residual material debris accelerates blade wear and contaminates subsequent products.
✅ Correct practice: Install localized dust collection hoods around the blade holder to clean while cutting.
2. Not replacing the dust-collecting roller just because it "looks clean".
Even if the surface of the dust-collecting roller shows no obvious stains, its stickiness may have significantly decreased, making it ineffective at capturing tiny particles.
✅ Correct practice: Replace it according to a set time interval, rather than waiting for it to completely fail.
3. Believing that the sharper the blade, the more durable it is, and using it beyond its lifespan.
Overuse of blades can lead to microscopic chipping, affecting cutting quality and generating metal debris that contaminates the material.
✅ Correct practice: Use a "timed replacement system" instead of a "meter-based replacement system," setting the replacement cycle based on operating time or production volume.
4. Neglecting Daily Calibration of the Tension System: Tension sensors and floating rollers are prone to jamming or drifting during long-term operation. Failure to clean and calibrate them promptly can lead to uneven winding and wrinkling.
✅ Correct Practice: Calibrate the tension detection roller monthly with standard weights to ensure accurate feedback signals.
5. Adjusting PID Parameters Based Solely on Experience, Lacking a Basis: When tension fluctuates, operators often arbitrarily adjust the inverter's PID parameters, which may actually cause oscillations.
✅ Correct Practice: Follow the principle of "first reducing the P value to stabilize the system, then appropriately increasing the I value to eliminate deviations," and fine-tune based on the equipment's response curve.
6. Neglecting Ambient Temperature and Humidity Control: Changes in temperature and humidity can cause materials (such as PET film) to expand and contract, affecting slitting accuracy and winding neatness.
✅ Correct Practice: Control the workshop temperature and humidity within the range of 22±2℃ and humidity within 50%±5% to reduce material deformation.
Avoiding these pitfalls helps improve equipment stability, extend the lifespan of core components, and ensure consistent product quality.
