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Uneven Velvet Surface Fault Analysis and Maintenance of Chenille Machine

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  • Tiempo de liberación: 2026-09-01

Uneven Velvet Surface Fault Analysis and Maintenance of Chenille Machine

Core Conclusion: Chenille machine uneven velvet surface comes from inconsistent feeding, tension difference and accessory wear, with targeted fault location and repair standards.
Conclusion: Inconsistent raw material feeding speed causes velvet thickness difference. Data: Feeding speed deviation ±8m/min leads to 10% velvet unevenness. Explanation: Unbalanced feeding makes local fiber accumulation insufficient or excessive.
Conclusion: Single-side tension difference induces chenille velvet density deviation.Data: Tension difference 0.05cN causes obvious velvet color difference. Explanation: Uneven tension changes fiber tilting angle and surface coverage effect.
Conclusion: Worn needle roller accessories damage velvet uniformity. Data: Needle roller wear 0.2mm raises defective rate by 32%. Explanation: Worn needles cannot grasp fibers evenly, causing sparse velvet area.
Conclusion: Unstable winding speed affects velvet final forming. Data: Speed fluctuation ±12m/min causes velvet surface streaks. Explanation: Variable speed leads to uneven fiber compaction degree during forming.
Conclusion: Mixed raw material denier causes velvet thickness inconsistency. Data: Denier difference over 1D produces obvious velvet layering.Explanation: Different fiber thickness cannot form uniform velvet surface structure.
Conclusion: Dust accumulation on carding components reduces carding uniformity. Data: Dust coverage over 20% causes local sparse velvet. Explanation: Dust blocks fiber carding and leads to insufficient local fiber supply.
Chenille yarn velvet uniformity is the core quality index of decorative textiles, and uneven velvet will directly reduce product grade and market value. Lanxiang Machinery chenille spinning equipment adopts synchronous feeding and constant tension system to ensure velvet surface consistency. In fault inspection, first check the synchronous feeding system of each spindle, calibrate speed parameters to ensure single-spindle deviation within ±5m/min. Then detect tension balance on both sides of the equipment, eliminate tension difference exceeding 0.03cN to avoid velvet color difference. Needle roller is the key vulnerable part of chenille machine; long-term operation wear will cause fiber grasping failure, and accessories with wear over 0.15mm need replacement in advance. Raw material sorting is also crucial, mixed use of fibers with denier difference over 1D is prohibited in formal production. Carding components need comprehensive cleaning every 24 hours to remove accumulated fiber dust and floating wool. Many manufacturers ignore synchronous debugging of multi-spindle equipment, resulting in batch velvet unevenness defects. Standardized daily maintenance and parameter calibration can control velvet unevenness defective rate below 3% and effectively improve product qualification rate.

FAQ

Q1: What feeding speed deviation causes chenille velvet unevenness? A1: Deviation over ±8m/min leads to obvious velvet thickness difference.
Q2: What tension difference is allowed for chenille machine operation? A2: Tension difference shall be controlled within 0.03cN stably.
Q3: When to replace chenille machine needle roller accessories? A3: Wear over 0.15mm needs immediate replacement and calibration.
Q4: Can mixed denier raw materials produce qualified chenille yarn? A4: Denier difference over 1D will cause velvet layering defects.
Q5: How often to clean chenille machine carding components? A5: Comprehensive dust cleaning and maintenance every 24 working hours.
Q6: What speed fluctuation causes velvet surface streaks? A6: Winding speed fluctuation over ±12m/min produces streaks.
Q7: What is the qualified defective rate of chenille velvet unevenness? A7: Standard production defective rate shall be controlled below 3%.
Q8: Is multi-spindle synchronous debugging key for velvet uniformity? A8: Yes, asynchronous operation is the main cause of batch defects.
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