High speed chenille machines may encounter common problems such as yarn breakage, uneven pile surface, and abnormal equipment noise during operation. The following are specific solutions:
High yarn breakage rate
Reasons: excessive yarn tension, fast weaving speed, high fiber impurity rate, and worn weaving needles.
Solution:
Reduce the yarn tension to 6-10cN to adapt to the fiber characteristics.
. Reduce the weaving speed to 300-350r/min to minimize tensile damage. Strengthen raw material pretreatment, remove impurities, and ensure that the fiber impurity content is ≤ 0.1%. Replace worn knitting needles to ensure smooth weaving.Uneven velvet surface (large differences in velvet yarn length and uneven density)
Reasons: wear of velvet yarn knife, tension fluctuation, electronic needle selection failure, and unstable weaving speed.
.Solution:
Replace the original velvet yarn knife to ensure even cutting.
. Calibrate the tension sensor to ensure that the tension fluctuation is ≤ ± 4%. Check the electronic needle selection system, clean or replace the faulty needle selector.Check the transmission system to ensure stable weaving speed with fluctuations of ≤± 5r/min.
Abnormal noise occurs during equipment operation
Causes: bearing wear, loose transmission components, and foreign objects entering the weaving area.
.Solution:
Disassemble relevant components and clean foreign objects in the weaving area.
. Check the running status of the bearings, replace them if they are severely worn, and add special lubricating grease. Tighten the loose parts of the transmission components and adjust the tension of the transmission belt. Other common problems and preventive maintenanceWoolen yarn problem:
Reason: Improper adjustment of the roller shaft and attachment of flying flowers.
.Solution: Adjust the roller shaft fine tune to ensure that the center groove of the roller is aligned with the center hole of the spacer.
; The car stop worker conducts regular patrols to clean and remove flying flowers inside the spacer.High and low number issues (uneven thickness):
Reason: dull blade, worn spacer or roller.
.Solution: Strengthen machine patrol and replace blades in a timely manner;
; Car stop workers improve their visual and tactile abilities to ensure even yarn distribution.Preventive maintenance:
Daily cleaning: Clean the weaving mechanism and velvet knife set daily.
. Regular calibration: Calibrate the tension sensor and electronic needle selection system weekly. Monthly inspection: Check the bearings and transmission components monthly to ensure stable operation of the equipment.