Comparative study of soft drafting system and the conventional drafting system based on the ring spinning frame

Cui, Yuemin; Cheng, Longdi; He, Shanshan; Lyu, Jindan; Cui, Yihuai; Deng, Wansheng

doi:10.1177/00405175221144773

Cited by 5 publications

(7 citation statements)

References 12 publications

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“…Research showed the mechanism of fibre strand condensing on the drafting zone of the ring frame with compact attachment for the compact yarn by changing the applied pressure and the speed of condensing through different lateral positions of the groove [34]. Another study showed the effect of modified soft drafting on the impact of 18.2 Tex cotton combed yarn to reduce the imperfections on that yarn [5]. Moreover, the study was conducted on the fibre migration properties of cotton and nano fibrehttps://doi.org/10.31881/TLR.2024.068 based compact yarn through the usual ring frame drafting system [35].…”

Section: Potential Research Gapsmentioning

confidence: 99%

“…Then, by the yarn count tester or a simple wrap reel and a digital weight scale, the yarn count in Ne is obtained. Finally, the CSP value is obtained by multiplying this force value in lbs by the yarn count value in Ne [5].…”

Section: Count Strength Product (Csp)mentioning

confidence: 99%

“…As a result, getting desirable CSP values depends critically on adjusting roller hardness [5]. https://doi.org/10.31881/TLR.2024.068…”

Section: Count Strength Product (Csp)mentioning

confidence: 99%

“…An improved grip on the fibres, which may result in a more even yarn with improved elongation qualities, is one effect of increasing the hardness [5]. The yarn's ability to stretch before breaking could be reduced if treated to too high hardness levels, which could cause unnecessary tension or fibre damage.…”

Section: Elongation At Breakmentioning

confidence: 99%

“…Inconsistent yarn tension and quality may result if the rollers need a more firm hold on the fibres. However, using too harsh rollers might compromise the yarn's strength and flexibility [5]. The proper roller hardness becomes crucial, balancing price, quality, and productivity [6].…”

Section: Introductionmentioning

confidence: 99%

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Prioritising Yarn Quality Via Varying Top Roller Hardness: A Fuzzy Application

Raian,

Hossen,

Saha

et al. 2024

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In recent years, the spinning or yarn manufacturing sector has seen remarkable technological advancements, emphasizing high-quality yarn production, especially for cotton combed ring spun yarns. In the case of better quality ring spun combed yarn, each part of the ring frame is significant. To fulfil this issue, this study focuses on understanding the impact of the drafting roller hardness on cotton-combed ring-spun yarn quality. It delves into how ten top and bottom roller hardness combinations influence yarn quality parameters. The cotton combed yarns underwent rigorous testing after spinning on ring frames with varying drafting roller hardness. Key quality parameters studied included yarn Imperfection Index (IPI), Unevenness (Ue%), Hairiness (Hi), Elongation at break (Eb%), and Count Strength Product (CSP), and Tenacity (Te). The primary insight was that extreme roller hardness adversely affects all parameters except Elongation at the break value obtained for the shore hardness value of 80/83. Yarns produced using medium-hardness rollers showcased fewer imperfections due to more consistent fibre flow and minimized drafting slippages, resulting in an even twist. These findings are pivotal for the yarn manufacturing industry, hinting at potential refinements in production methods. The usage of the Fuzzy DEMATEL (Decision-Making Trial and Evaluation Laboratory) methodology also determined that Te CSP) and IPI values significantly influence the combed yarn quality when adjusting roller hardness, whereas Hi is the least influential. Therefore, this study offers twofold insights: determining the optimal roller hardness and identifying the most affected quality parameters.

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Section: Potential Research Gapsmentioning

confidence: 99%

Section: Count Strength Product (Csp)mentioning

confidence: 99%

“…As a result, getting desirable CSP values depends critically on adjusting roller hardness [5]. https://doi.org/10.31881/TLR.2024.068…”

Section: Count Strength Product (Csp)mentioning

confidence: 99%

Section: Elongation At Breakmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Prioritising Yarn Quality Via Varying Top Roller Hardness: A Fuzzy Application

Raian,

Hossen,

Saha

et al. 2024

Text Leather Rev

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Measurement of ring spinning spun yarn spindle position based on binocular vision

Lv,

Teng,

2024

Textile Research Journal

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Aiming at the problem of insufficient positioning accuracy of the ring spinning spun yarn automatic jointing machine using an automated guided vehicle platform after spun yarn breakage, a three-dimensional coordinate detection method of the ring spinning spun yarn spindle position based on binocular vision is proposed. The bottom column of the spindle was selected as the detection target, the contrast of the background of the bottom column of the spindle was physically enhanced, the picture of the bottom of the spindle was collected with a calibrated binocular camera, the two-dimensional coordinates of the midpoint of the bottom edge of the spindle bottom profile were obtained by the processing of the local picture, and the three-dimensional world coordinates of the midpoint of the bottom edge of the spindle bottom profile were calculated based on the method of single-pair feature-point matching. Comparing this paper’s single-pair feature-point matching method with the traditional multi-pair feature-point matching detection method (semi-global block matching), the experimental results showed that: the detection errors of both the single-pair feature-point matching method and the traditional semi-global block matching detection method were less than 2 mm; both methods satisfied the requirements of the positional detection accuracy of the spindle joints. The position detection method based on single-pair feature-point matching saved 80% of the program time compared with the traditional semi-global block matching method.

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The influence of the friction field on accelerating position distribution

Fan,

Wang,

Zhang

et al. 2024

Textile Research Journal

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In accordance with the tenets of displacement deviation theory, the distribution of accelerating positions was the main reason for the uneven output sliver. To elucidate this phenomenon, a dynamic drafting model with controllable fiber proportion was developed in this paper to simulate the accelerating process of the floating fiber. The model was employed to investigate the impact of the friction field on the distribution of accelerating positions, achieved through the manipulation of friction field distribution and fiber proportion in the drafting zone. The simulation results indicated that, with various drafting conditions, the friction field at the position with a higher slow fiber proportion always made the accelerating position distribution closer to the front roller. In addition, the duration of the friction field influence on the fiber floating process was found to be directly proportional to its effect on the accelerating position distribution. Furthermore, there was a critical slow fiber proportion, which increased in tandem with the augmentation of slow fiber proportions in the drafting zone. The friction field at the position where the proportion of slow fibers was higher than the critical slow fiber proportion made the accelerating position distribution closer to the front roller; otherwise, the friction field made the accelerating position distribution closer to the back roller. This study can offer a valuable reference for designing more effective friction field distribution to improve the output sliver quality.

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Comparative study of soft drafting system and the conventional drafting system based on the ring spinning frame

Cited by 5 publications

References 12 publications

Prioritising Yarn Quality Via Varying Top Roller Hardness: A Fuzzy Application

Prioritising Yarn Quality Via Varying Top Roller Hardness: A Fuzzy Application

Measurement of ring spinning spun yarn spindle position based on binocular vision

The influence of the friction field on accelerating position distribution

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