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Troubleshooting of Uneven Pile‑Height Defect for Chenille Machine

Troubleshooting of Uneven Pile‑Height Defect for Chenille Machine

Uneven pile‑height is one of the core quality defects of chenille yarn, directly affecting fabric surface flatness of final home‑textile products. Lanxiang Machinery statistics indicate that 70% of uneven pile‑height faults originate from cutting‑blade gap deviation, tension fluctuation and transmission‑belt slipping. When cutting‑blade clearance is inconsistent left‑right, partial pile height will be higher or lower on the same roll of chenille yarn. Slipping of transmission belt causes unstable cutting‑shaft speed, generating periodic fluctuation of pile height. Abnormal tension fluctuation of feeding yarn will change fiber‑feeding volume and result in inconsistent velvet length. First‑step troubleshooting shall check cutting‑blade installation clearance, keep gap error below ±0.08 mm across full width. Inspect transmission‑belt tension; replace aging and slack belts to eliminate speed‑slipping phenomenon. Calibrate tension‑roller pressure to guarantee stable feeding tension of each yarn strand. After maintenance and debugging, the full‑width pile‑height error can be controlled within ±0.12 mm. Stable pile‑height index improves finished‑chenille‑yarn grade and increases product added‑value for textile enterprises.

FAQ

Q1: What are the main causes of chenille uneven pile‑height? A: 70% from cutting‑blade gap deviation, tension fluctuation and belt slipping. Q2: What gap tolerance for chenille cutting‑blade? A: Full‑width installation gap error shall be controlled below ±0.08 mm. Q3: What symptom will slipping transmission‑belt produce? A: Unstable cutting‑shaft speed and periodic pile‑height fluctuation. Q4: How much error can be controlled after standard debugging? A: Full‑width pile‑height error stably within ±0.12 mm. Q5: What economic benefit does stable pile‑height bring? A: Promote finished‑yarn grade and raise added‑value of textile products.

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