Fiber Motion in the Roller Draft Field

Ichino, S.; Kurosaki, Shinya; Tsuchikawa, Goro; Kozakai, Shoichi

doi:10.4188/jte1955.2.44

Journal of the Textile Machinery Society of Japan

1956

DOI: 10.4188/jte1955.2.44

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Fiber Motion in the Roller Draft Field

S. Ichino¹,

Shinya Kurosaki²,

Goro Tsuchikawa³

et al.

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Cited by 4 publications

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“…However, these experiments could not explain the principle that drafting conditions affected the output sliver regularity. Ichino et al., 7 Koukichi and Michio, 8 Masataka, 9 Ishikawa et al, 10 Yan et al., 11 and Grishin 12 did a series of mathematical and experimental research studies on the drafting process and pointed out that the accelerated point distribution of fibers is a critical influencing factor on the irregularity of the output sliver. In order to clarify the motion process of fibers in the drafting process, Weber and Wulfhurst 13 visualized the dynamic drafting process of fibers by tracing a fluorescent fiber in the sliver.…”

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A dynamic drafting model with the frictional force between fibers

Fan

Zhang

Wang

2023

Textile Research Journal

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Roller drafting is one of the most critical processes in spinning. This study established a dynamic drafting model and simulated the drafting process affected by the frictional force between fibers. In the simulation, the dynamic drafting process of fibers was simulated by calculating the movement time of fibers in the drafting zone. Moreover, the dynamic accelerating process of fibers was simulated by calculating the frictional force between fibers during the dynamic drafting process. Therefore, this model could simulate the dynamic drafting process affected by the frictional force between fibers. The proposed model was validated by the comparison with the experimental data of accelerated point distribution and output sliver irregularity. In addition, the distribution of accelerated points and fibers with various drafting ratios was simulated. The simulated results indicated that the greater the draft ratio, the more the slow fibers and the fewer the fast fibers in the drafting zone. Furthermore, the accelerated point distribution was more concentrated and closer to the front roller nip line. Thus, this model can offer a valuable reference to investigate the principle of influence of drafting conditions on the drafting process.

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confidence: 99%

A dynamic drafting model with the frictional force between fibers

Fan

Zhang

Wang

2023

Textile Research Journal

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Effect of accelerated point distribution on sliver irregularity. Part Ι: characterization of accelerated point distribution

Lin

Oxenham

2012

Journal of The Textile Institute

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This paper introduces a new approach to characterize the accelerated point distribution in roller drafting. The approach uses 2-parameter Weibull distribution and Log-normal distribution to estimate the probability density function of the fiber accelerated point by including the influence of draft ratio and ratch, as well as fiber lengths. The coefficient of variation (CV) of accelerated points is then derived by employing conditional probability. The model was applied to a group of simulated data from literature and newly obtained experimental data of accelerated point distribution. The CV of the fiber accelerated points was compared with the CV from other published accelerated point distributions and the data derived from measurements of sliver irregularity. The model based on Log-normal distribution was proved to adequately characterize the probability density function of the fiber accelerated point. The accelerated point distribution would be a plausible variable to be utilized in the optimization of the draft settings.

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Comparative analysis of novel drafting devices and traditional roller drafting device in ring spinning on the acceleration point distribution and yarn properties

Quan

Cheng

Xue

et al. 2020

The Journal of The Textile Institute

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Fiber Motion in the Roller Draft Field

Cited by 4 publications

References 4 publications

A dynamic drafting model with the frictional force between fibers

A dynamic drafting model with the frictional force between fibers

Effect of accelerated point distribution on sliver irregularity. Part Ι: characterization of accelerated point distribution

Comparative analysis of novel drafting devices and traditional roller drafting device in ring spinning on the acceleration point distribution and yarn properties

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