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为解决赛络纺R 9.8tex纱整经断头多的问题,从条干、断裂强度、毛羽、纱疵和漏疵、捻强及细纱设备等方面分析赛络纺R 9.8tex纱出现断头的诸多因素,通过对细纱设备检查和对筒纱进行复倒检验,认为:产生断头主要原因是由于细纱落纱机预松盘异常、10万m9级有害纱疵超标和百万米纱疵数超标所致。采取针对性的技术整改措施后问题得以解决,达到降低纱线整经百根万米断头的目标。 相似文献
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通过时进口N07-Ⅱ村田自动络筒机上加工的强捻纱的退捻气压P1、加捻气压P2及捻接长度Ln等捻接工艺参数进行优选,提高了强捻纱接头质量. 相似文献
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强捻纱捻接工艺的调整 总被引:2,自引:1,他引:1
我公司生产的CJ 1 1 .7tex强捻纱捻度为1 80捻 /1 0cm ,在村田自动络筒机上生产时 ,捻接质量达不到工艺要求 ,结头易脱开 ,大部分纱头根本捻接不上 ,络筒机无法正常生产。分析原因 ,主要是由于CJ 1 1 .7tex强捻纱捻度太大 ,络筒机捻接动作不到位 ,退捻气压调整又受条件限制 ,造成纱头退捻不充分 ,捻接成功率极低。为此 ,我们对设备运转状况进行了检查 ,对工艺参数进行了调整。( 1 )设备运转状况要求①气压 :在车后调整气阀 ,使退捻气压P1 达到 0 .65MPa以上 ,加捻气压P2 达到 0 .6MPa。②上下退捻瓷管完好无损 ,内壁光洁 ,无松动、位移… 相似文献
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探讨精梳纯棉细号强捻纱生产工艺。针对细号强捻纱强力低、纺纱难度大的特点,通过选用优质长绒棉、细绒棉;优选工艺配置,清棉采取"多松少打、渐进开松",梳棉采用"轻定量、紧隔距、低速度、强分梳、少损伤、好转移"的工艺原则;采用长绒棉与细绒棉精梳条在并条两道混和,确保混和均匀;设计好细纱后区牵伸、前罗拉速度、锭速等工艺,控制细纱断头;络筒控制筒纱黏连、捻接失误率及捻接头质量。通过以上措施的实施,保证了JC 9.7 tex强捻纱的顺利生产,成纱质量满足了使用要求。 相似文献
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在以S捻18tex针织纱为原料生产针织面料时,S捻筒子纱常出现断头和乱纱现象,有时在织物表面出现“小辫子”疵点(开、关车时尤其突出),严重影响了针织面料的质量和针织机的生产效率。经过观察,发现络筒机正常工作时,正在退绕的管纱在筒纱表面受到摩擦力的作用,有顺纱面滚动的趋势,这种趋势使还没有脱离纱面的S捻纱线加上Z捻,出现弱捻环节造成断头;而脱离纱面的纱段则因捻度加大而扭结成“小辫子”;再者,假捻现象使得纱线退绕时与摩擦的筒子表面毛羽纠缠,造成纱线缠绕、断头。基于以上考虑,我们想到改变S捻纱线的卷绕方向,也就是使筒子的安装… 相似文献
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粘纤强捻纱生产工艺分析与探讨 总被引:2,自引:0,他引:2
文中介绍了在环锭细纱机上生产粘张强捻S捻纱的生产工艺分析以及在细纱机上Z捻纱改S捻纱的方法,还从温湿度控制等方面介绍了减少细纱、筒子纱断头的措施。 相似文献
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探讨实行集体换粗纱的必要性.分析了传统换粗纱方法存在的缺陷及实行集体换粗纱的诸多好处及所存在缺点的解决途径.认为:集体换粗纱具有减少空粗纱断头,降低粗经、粗纬、竹节纱疵和接头纱疵等优点,有利于提高高档面料的布面质量.此法对细纱机的生产效率略有影响,粗纱回花率有所增加.可通过适当减少关车时间来补偿效率损失,推广采用粗纱尾纱处理机,提高处理效率和质量,同时粗纱工序应实行定长、定位落纱.力求粗纱直径大小一致,减少锭间张力差异和大小纱张力变化,降低粗纱机断头率,消灭连续或多次断头的纱锭,以期获得良好的效果.指出:集体换粗纱的优点大于缺点,应予以推广. 相似文献
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Residual yarn detector plays an important role in the pipeline of spinning-linked winding systems. This research proposed an image-based method to improve the traditional detectors who have weaknesses such as low precision, low sustainability and yarn-damage-possibility. A detection system was developed to capture and process the bobbin images. The proposed algorithm includes three main steps: bobbin recognition, residual yarn reusability judgment and un-reusable residual yarn detection. With the utilization of the adaptive threshold, profile detection, region-of-interesting extraction and frequency-tuned salient region detection, the bobbins were classified into three classes with a desirable accuracy rate. The proposed method was applied on 21 different bobbin samples and obtained a 100% detection rate, which demonstrated that the method is effective on different samples. To test the robustness of the method, it was tested in eight different light conditions. The result showed that the method is reliable in a wide range of illumination intensity. 相似文献
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《纺织学会志》2013,104(6):503-512
Abstract Warp breakage mechanism of Dref, ring, and rotor spun yarn is discussed using five different techniques,which include Weibull distribution, fatigue behavior, scanning electronmicroscopy studies, and analysis of structural distortion by digital image processing. In all types of yarn, failure occurs at minimum diameter. Interfibre slippage is a dominant factor for warp breakage and the slippage length is found to be highest for Dref yarns. 相似文献
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介绍了纱线毛羽的状态和危害,讨论了络筒工序对纱线毛羽的影响因素,指出络筒速度、摩擦纱段、清纱板隔距、槽筒材料及形状、气圈破裂器、导纱距离大小、筒子卷绕直径大小等因素对纱线毛羽的影响,并提出了相应的措施。 相似文献
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In textile and garment industries, misarranged warp yarns of yarn-dyed fabrics disorganize the layout of fabrics and lead to poor product quality. This series of studies aims to develop a computer vision-based system for automatic detection of misarranged color warp yarns in terms of high efficiency and good accuracy. Four main parts are included in this series of studies: warp yarn segmentation, fabric image stitching, warp regional segmentation, and yarn layout proofing. This paper proposes a continuous segmentation method of warp yarns to detect the misarranged color warp yarns for yarn-dyed fabrics automatically, which is the foundation of the developed computer vision-based system. The proposed framework consists of two main components: warp yarn segmentation and fabric image stitching. Firstly, the sequence images of a fabric stripe are captured using a designed offline image acquisition platform. Secondly, the warp yarns in the sequence images are segmented by a sub-image projection-based method successively. Thirdly, the sequence images are stitched by a yarn-template matching method based on their warp segmentation results. Finally, the continuous segmentation result of warp yarns is saved for the further processing of warp regional segmentation and color warp layout proofing. The proposed method has been evaluated on 720 fabric images of five fabric examples with plain and 2/2 twill, and experimental results show that the proposed method can realize the continuous segmentation of warp yarns in yarn-dyed fabrics with the yarn segmentation accuracy of 97.43% and image stitching accuracy of 99.53%. 相似文献
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针对短纤纱经编生产强力低、毛羽多、延伸小、捻度大以及成本高等问题,总结了短纤纱经编生产中的整经技术、高速生产技术、清洁生产技术、智能生产技术和全成形经编生产技术的发展及生产应用。通过梳理经编用短纤纱成纱质量要求,包括纱线断裂强度、表面毛羽和延伸性能等,进一步分析了短纤纱经编整经技术、短纤纱经编织造技术存在的问题和解决方法。通过介绍短纤纱经编产品在衬衫面料、内衣面料、裤料、蕾丝面料领域的应用现状以及生产情况,对短纤纱经编技术未来发展方向进行展望,指出了短纤纱经编生产技术将持续向特色化、高档化和功能化方向发展。 相似文献
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在传统经编间隔织物研究的基础上进行玻纤经编间隔织物的研究,包括玻纤原料的选用、织物组织结构设计、上机试验编织的研究等。结果表明:优化设计经编间隔织物结构,选用细度较小、捻度较小的玻璃纤维纱并在编织过程中对玻纤采取适当的润滑处理,可大大减小玻纤因脆性大,起静电,易钩毛引起的断纱。同时,上机织造时选择利于编织的成圈机件配置,优化织针形状,合理调节上机过程中牵拉与送经参数的配置关系,选用较大的牵拉角度,可以较好的改善玻纤的编织性能,提高三维整体经编预制件的成型质量,为实际生产提供参考价值。 相似文献