Mathematical modeling of the dynamic yarn path depending on spindle speed in a ring spinning process

The productivity of the conventional ring spinning process is currently limited by the frictional heat that occurs in the ring/traveler twisting system. In the framework of a fundamental research project from the German Research Foundation (DFG), the levitation principle of superconducting magnetic bearing (SMB) was implemented as a twisting element in order to eliminate the frictional problem and thus aim, at least, to double the productivity. A mathematical model of the dynamic yarn path has already been presented considering the friction free SMB system up to an angular spindle speed of 25,000 r.p.m. In this paper, the existing theoretical model, which was developed up to 25,000 r.p.m, was further modified considering the balloon control ring and yarn elasticity at a higher angular spindle speed, such as 50,000 r.p.m. The model was solved numerically using the RUNGE-KUTTA method. With this model, it is possible to estimate the yarn tension distribution and balloon form considering the above-mentioned parameters. The model established was further validated by comparing the yarn tension and balloon forms predicted with measured ones up to an angular spindle speed of 15,000 r.p.m in a ring spinning tester based on superconducting magnetic bearing.

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Reducing Yarn Hairiness in a Modified Ring Spinning Yarn Path by Various Offsets

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.331.493 ◽

2011 ◽

Vol 331 ◽

pp. 493-497

Author(s):

Xu Zhong Su ◽

Wei Dong Gao ◽

Ting Ting Wu ◽

Xin Jin Liu ◽

Yun Zhang

Keyword(s):

Critical Region ◽

Breaking Force ◽

Ring Spinning ◽

Fiber Tension ◽

Yarn Properties ◽

Spun Yarns ◽

Spinning Process ◽

Spinning Triangle ◽

Yarn Hairiness ◽

The Right

Spinning triangle is a critical region in the spinning process of yarn. Its geometry influences the distribution of fiber tension in the spinning triangle and the properties of spun yarns, such as the yarn breakage and hairiness. In this paper, the relationships between the spinning angle and yarn properties especially the yarn hairiness were investigated under various horizontal offsets. The properties of spun yarns produced by the modified system were evaluated and analyzed. Both left diagonal and right diagonal yarn arrangements were examined. The results indicate that the right diagonal yarn path leads to reduce yarn hairiness but the left diagonal yarn path leads to increase yarn hairiness; the breaking force of yarn changes little; yarn evenness deteriorates slightly with the changes of offset.

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Spinning Process and Mechanical Properties Analysis of PTT Filament Core Spun Yarn

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.239-242.1207 ◽

2011 ◽

Vol 239-242 ◽

pp. 1207-1210

Author(s):

Yuan Xue ◽

En Long Yang

Keyword(s):

Mechanical Properties ◽

Mechanical Property ◽

Elastic Recovery ◽

Staple Fiber ◽

Ring Spinning ◽

The Core ◽

Outer Sheath ◽

Spun Yarn ◽

Two Component ◽

Spinning Process

The two component filament/staple fiber core-spun yarn is spun on FA506 ring spinning frame with PTT filament as interlaced yarn and Tencel staple fiber as outer sheath. The spinning process and process parameters were analyzed. The morphology, mechanical property and wear-resisting property of two component core-spun yarn were tested. Results indicate that elastic recovery rate of core-spun is up to 90.6%; broken strength is up to 20 cN/tex after boiling water treatment. The core-spun yarn can be used as a new kind of knitting yarn for sweater.

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Evolution Regularity of Temperature Filed in Hot Power Backward Spinning for 7075 Cast Aluminium Alloy Tube

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.774-776.1170 ◽

2013 ◽

Vol 774-776 ◽

pp. 1170-1173 ◽

Cited By ~ 1

Author(s):

R.Y. Zhang ◽

S.J. Tu ◽

G.Y. Zhao ◽

J. Wang ◽

Z.H. Guo

Keyword(s):

Aluminium Alloy ◽

Internal Surface ◽

Fe Model ◽

Outer Face ◽

Key Factors ◽

Ring Spinning ◽

Alloy Tube ◽

Temperature Filed ◽

Spinning Process ◽

Lock Ring

The spinning temperature is one of key factors affected the uneven deformation during the hot power backward spinning for brittle material tubes, such as cast 7075 aluminium alloy tube. To analyze the evolution regularity of temperature filed in the spinning process, a 3D thermo-mechanical FE model of the process is developed under ABAQUS/Explicit environment. Then, the evolution of temperature filed during the process is analyzed based on the FE model. The results show that: The contact areas temperatures between lock ring, spinning rollers and tube decrease sharply during the initial spinning stage. The high temperature region is transferred from unformed zone of the tube to the contact area between spinning roller and tube. In the spinning zone, the temperature of internal surface of the tube is apparently higher than that of outer face.

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Analysis of Process and Properties of Stainless Steel Filament Wrapped Yarn Based on Multi-Axial Ring Spinning

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.332-334.743 ◽

2011 ◽

Vol 332-334 ◽

pp. 743-746

Author(s):

Cheng Liang Deng ◽

Zhao Qun Du ◽

Wei Dong Yu

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Process Optimization ◽

Steel Wire ◽

Ring Spinning ◽

Excellent Performance ◽

The Core ◽

Axial Ring ◽

Spinning Process ◽

Core Yarn

A new spinning method was presented to spin three-axial stainless steel filament wrapped yarn by modified ring-spinning, where the stainless steel filament was set as the core yarn and the nylon filament for decoration wrapping the stainless steel filament in the fields of the fabric for Shielding application. A set of process parameters was obtained by the ring spinning frame improvement and spinning process optimization, which realized to spin nylon filament wrapped stainless steel filament yarn. Moreover, the structure, and tensile mechanical properties were measured on the wrapped yarns. The results show that the process can spin stainless steel wire wrapped yarn and acquire the excellent performance of the yarn.

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Contribution of ring spinning process to the fibre-shedding behaviour of cotton yarn during knitting

Journal of the Textile Institute ◽

10.1533/joti.2006.0276 ◽

2007 ◽

Vol 98 (2) ◽

pp. 189-194

Author(s):

N. Bhowmick ◽

S. Ghosh

Keyword(s):

Cotton Yarn ◽

Ring Spinning ◽

Spinning Process

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An Integrated Approach to Dynamic Analysis of the Ring Spinning Process

Textile Research Journal ◽

10.1177/004051758905900707 ◽

1989 ◽

Vol 59 (7) ◽

pp. 416-424 ◽

Cited By ~ 42

Author(s):

Subhash K. Batra ◽

Tushar K. Ghosh ◽

Mishu I. Zeidman

Keyword(s):

Dynamic Analysis ◽

Integrated Approach ◽

Ring Spinning ◽

Spinning Process

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Investigation Of Fiber Length Change In Different Stages Of Ring Spinning Process

European Scientific Journal ESJ ◽

10.19044/esj.2021.v17n25p66 ◽

2021 ◽

Vol 17 (25) ◽

pp. 66

Author(s):

Rubel Khan ◽

Mamunur Rashid ◽

Sharif Ahmed ◽

Ehsanur Rashid ◽

Raihan Ul Haque

Keyword(s):

Fiber Length ◽

Length Change ◽

Ring Spinning ◽

Regression Methods ◽

Fiber Properties ◽

Chronological Change ◽

Spinning Process ◽

Length Changes ◽

Yarn Hairiness ◽

Length Analysis

Fiber length is one of the major fiber properties that influence yarn strength, evenness, product handle, product luster, and yarn hairiness. To assure yarn quality, fiber passes through a number of machinery during the spinning process, where it is subjected to various sorts of action that modifies the fiber length. As different process parameters are chosen based on fiber length, fiber length analysis throughout the spinning process will benefit in the adjustment of machine parameters to produce better quality yarn. This study will reveal the chronological change in average fiber length at different stages of the carded ring spinning process, as well as a correlation analysis of length change among different phases, using correlation and regression methods. For five distinct mixing samples, raw cotton, card mat, carded sliver, breaker drawn sliver, finisher drawn sliver, roving, and yarn (pneumafil) were examined at each stage from raw cotton to ring frame. Then, using USTER AFIS PRO, all of the samples were numerically evaluated and statistically analyzed using Microsoft Excel 2016. A positive correlation between fiber length changes at several phases was observed in the experiment, with average fiber length increasing in carding, breaker drawing, finisher drawing, and simplex but decreasing in card mat and ring.

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Systematic investigation of twist generation and propagation in a modified ring spinning system

Textile Research Journal ◽

10.1177/0040517519866950 ◽

2019 ◽

Vol 90 (3-4) ◽

pp. 367-375 ◽

Cited By ~ 1

Author(s):

Rong Yin ◽

Xiao-Ming Tao ◽

Bin-gang Xu

Keyword(s):

Systematic Investigation ◽

Speed Ratio ◽

Structure And Properties ◽

Important Process ◽

Ring Spinning ◽

Linear Relationships ◽

Twist Multiplier ◽

Spinning Process ◽

Wrap Angle ◽

Central Composite

Twisting is an important process used to form a continuous yarn from short staple fibers and to determine the structure and properties of the resultant yarn. This paper systematically examines the yarn twisting process in a modified ring spinning process based on a theoretical model proposed recently. To reduce the number of experiments, response surface methodology (RSM) involving a central composite design (CCD) in three factors—twist multiplier, speed ratio and wrap angle—was successfully employed for the study and analysis. The significant terms of the models were studied, and it was discovered that the speed ratio and wrap angle are statistically significant for the responses of twist efficiency, propagation coefficients of twist trapping, and congestion. More importantly, linear relationships were found among the three responses.

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Theoretical Study of Effect of Ring Spinning Triangle Division on Fiber Tension Distribution

Journal of Engineered Fibers and Fabrics ◽

10.1177/155892501501000314 ◽

2015 ◽

Vol 10 (3) ◽

pp. 155892501501000

Author(s):

Xinjin Liu ◽

Xuzhong Su

Keyword(s):

Theoretical Study ◽

Theoretical Models ◽

Ring Spinning ◽

Minimum Potential Energy ◽

Tension Distribution ◽

Fiber Tension ◽

Spun Yarns ◽

Spinning Process ◽

Spinning Triangle ◽

Minimum Potential

The spinning triangle is a critical region in the spinning process of staple yarn. Its geometry influences the distribution of fiber tension at spinning triangle directly and affects the qualities of spun yarns. Taking appropriate measures to change the ring spinning triangle geometry and improve the qualities of yarn has attracted more and more interest recently. Spinning triangle division is one of the most effective measures, such as solospun technology. Therefore, in this paper, the effect of ring spinning triangle division on fiber tension distribution was studied theoretically. The general case that the spinning triangle is divided into two parts, primary triangle and final triangle, was investigated. Firstly, theoretical models of the fiber tension distributions in the final and primary spinning triangles are given respectively using the principle of minimum potential energy. Secondly, the fiber tension distributions in the spinning triangle with different shape parameters are numerically simulated. Finally, the possible effects of ring spinning triangle division on yarn qualities are analyzed according to the numerical simulations and previous results. In addition, the properties of spun yarns produced by the modified ring spinning system were evaluated and analyzed.

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