给棉箱一体化梳棉机自调匀整设计

分析了一体化棉箱清梳联的结构特点,并根据梳棉机出条不匀和自调匀整装置的特点,设计出采用模糊控制的混合环自调匀整系统,对长片段不匀有较好的效果.     

清梳联与自调匀整

分析了清梳联由于在梳棉机喂入方式上与传统工艺不同，造成生条长片段和超长版段不匀的原因，提出采用自调匀整装置可以控制生条号数，减少台间差；控制中、长片段不匀。介绍了几种形式自调匀整装置的功能和根据不同工艺流程、不同产品质量要求选择配置自调匀整装置的原则。     

自调匀整装置与清梳联技术的发展

简单介绍了清梳联的工艺技术进步和清梳联生条结构的特点 ,分析了清梳联生条存在的长片段、超长片段不匀率大 ,重量偏差大的原因 ,提出安装梳棉机自调匀整装置是解决这一问题的有效手段 ,并分别介绍了开环、闭环、混合环几种自调匀整装置的结构特点、匀整机理及匀整效果     

C4型梳棉机自调匀整装置的使用与维修

我公司拥有瑞士ＲＩＥＴＥＲ公司制造的两套清梳联生产线配置 1 8台Ｃ4型梳棉机 ,其中Ｃ4型梳棉机带有长短片段的自调匀整装置。在我们这几年的生产实践中 ,对自调匀整装置进行严格管理 ,因此该套自调匀整装置一直运行正常 ,梳棉机生条质量指标均能达到我们的控制范围之内。1　Ｃ4型梳棉机自调匀整简介该自调匀整装置具有匀整生条长短片段的功能 ,它具有两个检测点和一个调节点 ,其中检测点一个是在给棉罗拉上的加压板上 ,另一个是在出条的阶梯罗拉处 ,而调节点是调节给棉罗拉的转速 (见图 1 )。图 1　Ｃ4型梳棉机自调匀整装置示意图由图 1…     

清梳联和梳棉机自调匀整在我国棉纺行业的结构分布及其质量分析

概述了我国棉纺行业清梳联的现状,对比了清梳联采用清梳联的两种结构形式的棉箱及其工艺效果,所采用的自调匀整装置结构及其工艺效果,认为清梳联的自调匀整应走高储棉量棉箱与闭环式自调匀整器相结合的发展道路.     

增强自调匀整混合环控制稳定性的研究

论述不同控制环节棉纺清梳联梳棉机自调匀整系统的特点 ,给出混合环自调匀整的一种控制算法 ,对该种算法进行了验证试验 ,列出了应用结果。     

降低清梳联生条重不匀的实践探讨

清梳联的生条重不匀影响成纱的重量CV值。在清梳联的生产线上如果系统控制不好自调匀整运行不正常，就会使生条重不匀带来很大的波动，但是通过系统调整，自调匀整的正确使用，可使生条重不匀3％以下水平，合格率达到97％以上。     

国产清梳联的主要问题及对策

分析了国产清梳联存在的主要问题,提出控制清梳联重量不匀率的措施和采用混合环自调匀整装置的建议。     

国产清梳联的主要问题及对策

介绍了国产清梳联存在的主要问题,提出控制清梳重量不匀率的措施和采用混合环自调匀整装置的建议。     

JFA226型梳棉机上加装滤波电容的改进

金坛清梳联配置的JFA226型梳棉机的自调匀整控制系统，采用IPC为控制中心，检测点由机前喇叭口生条粗细传感器与机后喂棉罗拉两侧棉层厚度传感器组成。     

并条机棉条质量的控制与研究

熟条的长、短片段不匀对后道工序的产品质量影响很大.文章重点研究了并条机棉条不匀产生的原因及控制措施,叙述了自调匀整装置的作用原理、分类及其在老机上的安装问题.     

基于旋转编码器的毛条不匀检测装置

针对B423型针梳机毛C07型机械式自调匀整装置存在不足的基础上,提出机电式自调匀整改造方案,重点阐述了对毛条不匀检测装置进行改造的方法,设计了一种基于旋转编码器的毛条不匀检测机构．所设计的检测装置经使用能满足系统的检测要求。     

降低普梳纱质量不匀率的实践

棉卷质量不匀率和生条质量不匀率是影响普梳纱成纱不匀率的主要因素,介绍了为降低上述两项半制品不匀率在管理、机械、操作和温湿度控制方面采取的措施,同时降低熟条质量不匀率,由此使普梳纱质量不断提高。     

牵切过程中纤维长度不匀率分析

 本文通过对纤维牵切过程的分析,明确了主要牵切工艺参数（牵切隔距、牵切倍数）与牵切条中纤维长度不匀的关系。牵切隔距对长度不匀率有明显影响,其影响规律与喂入长度与牵切隔距的配合有关,牵切倍数对长度不匀影响很小。研究结果揭示了牵切主要工艺参数与牵切纤维长度不匀之间的内在规律,为牵切生产工艺提供了理论依据和参考。     

梳棉机用FT024型自调匀整器使用体会

为用好FT024型自调匀整器、提高生条质(重)量稳定性,介绍其工作原理,S1,S2,JP,LUMP,GAIN,WEIGHT等参数的意义与设定,自调匀整调整方法及显示故障符号的含义;提出使用中特殊情况的处理方法和匀整效果对喂入棉箱、梳棉机的要求。指出:确保自调匀整良好功能的关键在于设备状态的保证及参数的正确调整,当温度、相对湿度等导致生条质(重)量变化时应该轻微补调,确保喂棉箱及输棉管道的压力稳定,梳棉机状态良好;调整FT024型自调匀整器后需等待3 min~5 min,再进行生条质(重)量测试。     

Modeling roller drafting based on fiber arrangement in the sliver

The variation of fiber arrangement caused by fiber motion during roller drafting process contributes greatly to the sliver properties, especially to the irregularity. In this study, a model of roller drafting based on fiber arrangement in the sliver was developed to calculate sliver irregularity. This proposed new method was capable of tracing the motion of individual fibers during the whole drafting process from the first floating fiber accelerating being accelerated to the last floating fiber being accelerated. The additional irregularity caused by the characteristic of accelerating in different cross-section was also calculated and analyzed by this simulation. The obtained simulation results were highly in accordance with empirical conclusions by the displacement deviation theory. Besides, the output fiber arrangement could be recorded and saved in order to be further regarded as the input fiber arrangement of the next following drafting process. The simulation results of three drafting zone were highly corresponded to the previous experimental research. Therefore, the as-developed model was proved to be useful and accurate to explore roller drafting and predict sliver irregularity.     

A study of the drafting force in roller drafting and its influence on sliver irregularity

Drafting force is the direct and intuitive factor resulting in fiber motion in a drafting zone. Utilizing data collected from an ITT Draftometer, this paper discusses the effect of draft ratio and ratch in both the break and the main draft zones on drafting force and the coefficient of variation (CV) of drafting force, and how these in turn affect sliver and yarn irregularity. It is shown that: the draft settings in the break draft zone have a significant effect on the drafting force; the break draft ratio shows distinct relationship with sliver irregularity; the ratch in the main drafting zone has considerable influence on drafting force; and in the experiments reported the drafting force does not directly relate to final yarn irregularity.     

聚乳酸纤维梳理工艺研究

通过改变刺辊、道夫速度及锡林与盖板隔距,研究了聚乳酸纤维梳理工艺,探讨了不同梳理工艺对生条棉结数量、短绒率及纤维长度不匀率的影响.试验结果表明:生条棉结数量受梳理工艺变化的影响最为显著,其中刺辊速度对生条棉结数量、短绒率及纤维长度不匀率的影响最大.     

新型针布梳理工艺特性、选用配套及新品开发的研究分析

分析了新型针布的特点、型号规格、选用配套、优良纺纱效果及新品开发等。与老型号针布相比,说明新型针布能明显地改善生条、成纱质量,特别在降低棉结、改善条干均匀度、单强不匀率等方面有明显的效果,并针对国内外高产梳棉机及其针布,结合我国实践,提出了新产品开发建议。     

Dual-feed rotor spinning of cotton fiber: trash separation and yarn properties

In all industrial rotor spinning machines, opening of the fibers is performed by an opening roller, in which sliver is fed from a single point. Increasing number of feed rollers from one to two may improve fiber opening and trash ejection by two-step loading in opening zone of the opening roller. This may improve fiber orientation and blending in the produced yarn and yarn properties. In earlier two sliver feed laboratory systems (dual-feed), it was not possible to work with cotton fiber, because the trash removal zone was used for feeding a second sliver. The aim of this study was to design a system that can take advantage of dual-feed and also extract the trash. The experimental rig was a modified RU04 rotor spinning unit of Rieter in which two separate sliver feed systems were utilized. Raw material used and yarn count were cotton and 29 tex, respectively. Extracted trash and yarn properties produced with dual-feed system were compared with that of the original unit. Yarn properties tested were tenacity, extension, work of rupture, mass irregularity and imperfections, hairiness, and abrasion resistance. Test results were analyzed by ANOVA for any difference between the means and Duncan for ranking. Tenacity, strain at peak, work of rupture, and yarn abrasion of the dual-feed yarn increased, and their mass irregularity and imperfections decreased in comparison to that of the conventional yarn. According to the test results, it was concluded that, increasing number of feed rollers on the opening roller from one to two has improved the yarn properties and trash separation of cotton fiber is possible and comparable to the original single feed.