降低R 19.7 tex成纱条干异常的生产实践

Production Practice of Reducing Evenness Abnormality of Yarn R 19.7 tex

为了降低环锭纺R 19.7tex纱突发性条干异常,对布面出现的条干形态进行分析,采用排除法确定突发性条干异常产生原因是粗纱停车时三罗拉颤动所致;分析导致三罗拉颤动的根本原因是三罗拉与下销棒距离偏大,将罗拉座中安装下销棒的内壁宽度由2.95mm改造为2.40mm,问题解决。指出:常规纱疵大多可通过粗细节长度推算产生位置,非常规纱疵需结合排除法解决;反复验证、找准原因,是解决实际生产问题的关键。

To reduce the accidental evenness of ring spun yarn R 19.7 tex,analysis of the evenness state of the fabric by exclusion method finds that the accidental evenness results from fibrillation of the three rollers in roving stop.The fibrillation of the three rollers is fundamentally caused by the large distance between the three rollers and bottom apron bar.Adjustment of the inner width of the bottom apron bar on the roller seat from 2.95 mm to 2.40 mm solves the problem of the transformation.It is pointed out that most of the conventional yarn faults can be located with the length of slubs while the accidental faults should refer exclusion method.Repeated verification for the fibrillation cause is important in production.