Optimization of yarn cleaning curve
Electronic yarn clearer each parameter setting has a greater impact on the production efficiency of the machine. Clearance yarn curve is mainly based on the user to determine the minimum product quality requirements, the optimization is to meet the quality requirements of users based on the winder efficiency. Winding yarn cleaning curve optimization process is as follows.
(1) According to the empirical data preset a set of process parameters. For example: the company's new car JC 18. 2 tex K initial development parameters: cotton + 250%, short stubborn + 120% × 1.5 cm, long rough + 35% x20cm. After the test on the car by spinning, respectively, check the yarn defects in each channel found that neps and stubby channel imperfections. In general, in the case of a reasonable set of electrical parameters, the number of meters in meters from 3 to 6, 10,000 meters in the number of splices in the 5 to 9 is the normal range, if the number of high-cut meters, then Decreased efficiency. After the adjustment process parameters: Nep + 230%, stubby + 110% × 1.3cm, long rough + 35% × 20 cm.
(2) Check the yarn defect grading scatter diagram to understand the distribution of yarn defects, cutting yarn along the main line to do, as the lot of yarn cleansing curve. If the number of meters high at this moment, you should consider the spinning, spinning process optimization process. The role of yarn clearers is to improve yarn quality on a certain basis, there is no better quality of yarn quality yarn clearer only by cutting function is difficult to meet the requirements.
(3) based on user requirements, optimize the yarn cleavage curve. At present, large-scale knitting yarn users generally require 20 kg cloth-like fiber defect number not more than 10. If there is excessive phenomenon can be a representative of the fabric defects to be removed, and Uster provided different samples to determine the clearance of different spots. In addition, yarn defect testing should also be done in time, and do different fiber defect sensitivity, length of data statistics in order to further optimize the foreign fiber process. New varieties of spinning a class, you need to check the statistics of foreign fiber defects, the requirements of 100,000 meters fiber yarn flaws can not exceed 30, otherwise it will seriously affect the efficiency. Company JC 18. 2 Tex K varieties of different fiber yarn process: +125 × 0.2cm, auxiliary points H1 +10% × 0. 1 cm, auxiliary points H2 +8% × 1.2cm, auxiliary points H3 +7% × 1.4cm, auxiliary point H4 + 6% × 1.5cm, auxiliary point H5 + 7% × 1.6cm. The process can be basically high contrast, high color and length of more than 2. 0 cm effective removal of foreign fibers.