共查询到19条相似文献,搜索用时 64 毫秒
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紧密纺纱成纱机理及特点分析 总被引:2,自引:0,他引:2
介绍了紧密纺纱的成纱机理及特点。紧密纺纱可消除传统环锭纺纱的加捻三角区 ,从而减少纱线的毛羽、提高纱线强力和弹性、减少纺纱断头 ,便于后道工序加工。紧密纺纱将成为本世纪纺纱发展的方向。 相似文献
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探讨细纱前胶辊前冲量对加捻三角区纺纱毛羽的影响.通过计算细纱前区采用不同胶辊前冲量时,须条喂入角、胶辊前移角、罗拉包围弧等参数以及导纱钩不同位置时各参数变化情况,分析不同前胶辊前冲量对成纱条干和毛羽的影响,并通过实际纺纱对比试验进行验证.指出:控制加捻三角区应着力减小加捻三角区底边,适当控制三角区的高,尽量减小边纤维与中心纤维差异,且让微小三角区包围弧保持在罗拉表面,加强纤维控制.兼顾条干和毛羽水平,细纱前胶辊前冲量不宜过大,仍以2.5 mm为宜. 相似文献
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为了研究错位纺纱角对纱线质量的影响,通过自制导纱装置,在前罗拉钳口至导纱钩之间形成一个偏移的纱路.分别采用5种左斜纺纱角对5种不同细度纱线进行了纺纱质量对比试验.结果表明:在Z捻左斜的情况下,纱线有害毛羽最多可以减少16.6%~40.5%,且与细号纱相比,粗号纱毛羽的改善更为显著;不同纱号的最佳左斜角不同,粗号纱和细号纱适应大角度偏移量(在8.4°~11°之间),而中号纱只要小角度偏移(4.2°)就能使纱线毛羽得到较好改善;但过大的偏移量(16.6°以上)对改善毛羽不利,甚至会恶化毛羽.错位纺纱角对纱线条干影响不大,对纱线强力几乎没有影响.指出:错位纺纱方式可以改善环锭纺成纱毛羽,其关键是要根据纺纱号数优选错位纺纱角. 相似文献
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紧密纺纱系统结构特征的比较 总被引:4,自引:0,他引:4
紧密纺纱技术可以缩小甚至消除加捻三角区,减少纱线毛羽,提高纱线强力,提高成纱质量。文章介绍了紧密纺纱技术的原理和目前市场上8家公司推出的紧密纺纱系统,分析了几种具有代表性的紧密纺纱系统,对其结构特征和性能作了比较和分析。 相似文献
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This paper examines empirical relationships between the geometrical parameters of the spinning triangle and the quality parameters of ring spun yarns. For this purpose, controlled variations in the geometry of the spinning triangle were induced using two existing modifications in the ring spinning process and by varying the yarn twist level. The geometrical parameters of the spinning triangle were measured using the clear rubber roller combined with digital image processing techniques as described in the first part of this study. The yarn quality parameters measured included yarn hairiness, strength, elongation and evenness. Yarn hairiness showed more noticeable sensitivity towards the physical shape of the spinning triangle than yarn tenacity, while yarn evenness and elongation were not significantly influenced by changes in spinning triangle geometry. 相似文献
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This paper examines the relationship between changes in the spinning triangle dimensions and evenness of the finally produced yarn. Three kinds of yarn (in different twist levels) were produced and during the spinning process a digital camera was used to record the production process and the triangle behaviour in front of delivery rollers. Using image-processing techniques, three parameters of the triangle (width, length and area) were measured. Then, the correlation between yarn irregularity and changes in the triangle dimensions (with regard to wavelength changes) were evaluated. The acceptable correlation between yarn irregularity and dimension changes indicated that this novel image-processing approach can be implemented in measuring yarn irregularities during the spinning process. 相似文献
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减少环锭纺纱毛羽的新思路——错位纺纱 总被引:3,自引:0,他引:3
简述了减少环锭纺纱线毛羽的方法,介绍了采用错位纺纱减少成纱毛羽的试验结果.结果表明,采用右错位纺纱可以减少Z捻纱的毛羽,而成纱强力、条于和常发性纱疵略有恶化. 相似文献
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Aliasghar Alamdar‐Yazdi 《纺织学会志》2013,104(3):263-271
This work investigates the effect of directed flow of the fibres in a twist triangle on yarn properties. This is done using different clip‐on attachments positioned on the front rollers of a ring spinning frame. Seven sets of rollers (plain non‐grooved; 75°‐biased left‐to‐right grooved; 75°‐biased right‐to‐left grooved; 15°‐, 45°‐ and 75°‐biased grooved from both sides towards the centre and solo) are made and positioned immediately below and parallel to the top front draft rollers of the laboratory ring spinning frame (tester model 82 KA) so that they can interact with the emerging drafted fibre strand before twist insertion. Afterwards, a 0.495‐ktex (2.02 Nm) finisher worsted roving composed of 55% polyester and 45% wool is fed into each unit of the ring spinning frame to produce a yarn with a yarn count of 30 Nm and a twist factor of 125. The rollers affect the flow of the fibres in the triangle zone and, as a result, the quality of the yarns is affected. A comparison of the yarns produced shows that directing the fibres in the triangle zone could improve the yarn quality. The results indicate that the 75°‐biased grooved (from both sides towards the centre) rollers improve the yarn quality in terms of hairiness, elongation and imperfections. 相似文献
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介绍了集聚纺纱的成纱机理及特点。集聚纺纱可消除传统环锭纺纱的加捻三角区,从而减少纱线的毛羽、提高纱线强力和弹性、减少纺纱断头,便于后道工序加工。集聚纺纱将成为本世纪纺纱发展的方向。 相似文献
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缆型纺纱技术是在环锭纺纱机前罗拉出口处有一个分割轮将其牵伸后的纤维须条分割成若干股纤维束,经过加捻形成新型结构的纱线.比较了8.8 tex和8.3 tex羊毛传统环锭纺纱线与缆型纺纱线的毛羽与耐磨性.试验结果表明,8.8 tex和8.3 tex羊毛缆型纺纱线的毛羽数少于传统环锭纺纱线的毛羽数,并且8.3 tex羊毛所形成纱线的毛羽数高于8.8 tex羊毛纱的毛羽数;缆型纱的耐磨次数高于传统纺纱线的耐磨次数,8.3 tex澳毛加工的缆型纱的耐磨次数高于8.8 tex澳毛缆型纱线的耐磨次数. 相似文献
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利用缆型纺纱技术生产细化羊毛纱 总被引:1,自引:0,他引:1
文章介绍了一种新的纺纱技术--缆型纺,阐述了其纺纱原理和装置改造,探讨了生产缆型纱的工艺要点.在选择原料及捻度时,缆型纱的生产工艺与传统的纺纱工艺有所不同.比较了采用缆型纺技术纺出来的纱和传统单纱的质量指标.这种新型纺纱方法可以显著改变环锭纺纱线的结构,不仅使纱线本身具有较少的毛羽,较好的耐磨性能,而且提高了纱线的织造效率,为生产单经单纬产品开辟了一条新的途径. 相似文献
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旋流器对环锭纺纱线性能的影响 总被引:1,自引:2,他引:1
在传统环锭细纱机的前罗拉与导纱钩之间安装旋流器进行纺纱,能够较好地改善环锭纺纱线的性能。通过正交试验的方法,考察了气压、锭速、捻系数和旋流器到前钳口的距离对纱线质量的影响,得出优化的参数组合。结果表明:气压为0.25 MPa、旋流器到前钳口的距离为6.5 cm、捻系数为330、锭速为9000 r/min时,所纺纱线质量最好;与传统环锭纺纱线相比,这种纺纱方法所纺得的纱线毛羽减少量达到97%,断裂强度提高了9%,条干不匀降低6%,为研究提高纺纱性能的新型纺纱方法提供参考。 相似文献