Mathematical Modeling of Dynamic Yarn Path Considering the Balloon Control Ring and Yarn Elasticity in the Ring Spinning Process Based on the Superconducting Bearing Twisting Element

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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In situ measurement of the dynamic yarn path in a turbo ring spinning process based on the superconducting magnetic bearing twisting system

Textile Research Journal ◽

10.1177/0040517519879899 ◽

2019 ◽

Vol 90 (7-8) ◽

pp. 951-968

Author(s):

M Hossain ◽

M Sparing ◽

T Espenhahn ◽

A Abdkader ◽

C Cherif ◽

...

Keyword(s):

Process Parameters ◽

Research Work ◽

Magnetic Bearing ◽

Spindle Speed ◽

In Situ Measurement ◽

Ring Spinning ◽

Yarn Tension ◽

Yarn Guide ◽

Superconducting Magnetic Bearing

The yarn tension and balloon form are the most important physical process parameters to characterize the dynamic yarn path in ring spinning. The present research work focuses on the in situ measurement of yarn tension in different regions of the yarn path in a developed turbo ring spinning tester with a friction-free superconducting magnetic bearing (SMB) twisting system and at an angular spindle speed of up to 50,000 rpm. The influence of different parameters, such as angular spindle speeds (15,000–50,000 rpm), yarn counts (15–40 tex) and balloon control ring (one or multiple), were evaluated to identify the influence of acting forces, for example, centrifugal forces. The effects of these process parameters were analyzed statistically using an analysis of variance. The yarn tension between the delivery rollers and the yarn guide was measured using a modified one-roller tensile yarn tension sensor. The yarn tension between the yarn guide and the SMB system was determined with an already existing optical approach at a higher angular spindle speed. As the highest yarn tension theoretically occurs between the SMB system and the cop, it was estimated in this region by measuring the coefficient of friction between the yarn and the yarn guide using the friction module of the constant tension tester equipment. The maximum balloon diameter was determined from the recorded balloon form between the yarn guide and the SMB system with respect to different angular spindle speeds. The results provide valuable information about the highest possible spinnable speed and enable a better understanding of the dynamic yarn path in the SMB spinning system.

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Mathematical modeling, simulation and validation of the dynamic yarn path in a superconducting magnet bearing (SMB) ring spinning system

Textile Research Journal ◽

10.1177/0040517516641363 ◽

2016 ◽

Vol 87 (8) ◽

pp. 1011-1022 ◽

Cited By ~ 2

Author(s):

M Hossain ◽

C Telke ◽

M Sparing ◽

A Abdkader ◽

A Nocke ◽

...

Keyword(s):

Permanent Magnet ◽

High Speed ◽

New Technology ◽

Superconducting Magnet ◽

Magnetic Bearing ◽

Ring Spinning ◽

Yarn Tension ◽

Runge Kutta Method ◽

Superconducting Ring ◽

Superconducting Magnetic Bearing

The new concept of a superconducting magnetic bearing (SMB) system can be implemented as a twisting element instead of the existing one in a ring spinning machine, thus overcoming one of its main frictional limitations. In the SMB, a permanent magnet (PM) ring rotates freely above the superconducting ring due to the levitation forces. The revolution of the PM ring imparts twists similarly to the traveler in the existing twisting system. In this paper, the forces acting on the dynamic yarn path resulting from this new technology are investigated and described with a mathematical model. The equation of yarn movement between the delivery rollers and the PM ring is integrated with the Runge-Kutta method using MATLAB. Thus, the developed model can estimate the yarn tension and balloon form according to different spindle speeds considering the dynamic behavior of the permanent magnet of the SMB system. To validate the model, the important relevant process parameters, such as the yarn tension, are measured at different regions of the yarn path, and the balloon forms are recorded during spinning with the SMB system using a high speed camera.

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Analysis of yarn properties in the superconducting magnetic bearing-based ring spinning process

Textile Research Journal ◽

10.1177/0040517517725122 ◽

2017 ◽

Vol 88 (22) ◽

pp. 2624-2638 ◽

Cited By ~ 2

Author(s):

Mahmud Hossain ◽

Anwar Abdkader ◽

Chokri Cherif

Keyword(s):

Research Work ◽

Comparative Investigation ◽

Magnetic Bearing ◽

Ring Spinning ◽

Spun Yarn ◽

Yarn Properties ◽

Ring Spun Yarn ◽

Spinning Process ◽

Yarn Tenacity ◽

Superconducting Magnetic Bearing

The fundamental research work about the superconducting magnetic bearing (SMB) twisting system provides huge potential to eliminate the most important limitation of productivity, that is, the friction in the ring traveler system of the existing ring spinning process. As a continuity of the research work, the functionality of the SMB spinning has been carried out with different angular spindle speeds, yarn counts, and materials in order to determine the influence of the SMB technology. The current paper presents a comparative investigation of the yarn properties, such as yarn tenacity, yarn elongation, yarn evenness, microscopic views, etc., between conventional and SMB ring spun yarn. The intensive analysis confirms that the SMB system enables one to produce satisfactory yarn quality similar to that of conventional ring spun yarn up to 15,000 rpm. The influence of conventional and SMB spinning processes on yarn properties has been further analyzed statistically using an analysis of variance.

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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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Investigation of Movable Balloon Controller System on a Ring Spinning Frame

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.175-176.474 ◽

2011 ◽

Vol 175-176 ◽

pp. 474-479

Author(s):

Ju Sheng Qiu ◽

Zhi Li Zhong ◽

Huan Guo ◽

Xun Gai Wang

Keyword(s):

Displacement Sensor ◽

Step Motor ◽

Ring Spinning ◽

Yarn Tension ◽

Spun Yarns ◽

The Status ◽

Spinning Process ◽

Linear Module ◽

High Power Consumption

Compared to other spinning system, the ring spinning process has been used to produce higher quality yarns, but with a much lower spinning efficiency, resulted from the relatively high spinning tension that leads to increased yarn breakage rates and makes high power consumption. Thus, depressing yarn tension is essential to change the status. In this paper, we design a movable balloon controller system to reduce yarn tension. The system is automatic, composed of powder switch, touch screen, PLC (Programmable Logic Controller), pulling-thread displacement sensor, controller of step motor, step motor and linear module. PLC, the core of the system, controls the position of the balloon controller by a series of programs. Then yarn tension was tested while spinning with movable balloon control ring, fixed balloon control ring and no balloon control ring, respectively. The result shows that the yarn tension can be depressed indeed by equipping this movable balloon controller system to some extent. Additionally, we find that the number of hairiness of ring spun yarns with this system can be reduced to some extent, while yarn tensile properties are not as sensitive to be worse. It is significant to cut down ends-down rate, improve the quality of ring spun yarns, the spinning efficiency as well as the energy efficiency of ring spinning.

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Measurement Methods of Dynamic Yarn Tension in a Ring Spinning Process

Fibres and Textiles in Eastern Europe ◽

10.5604/12303666.1172098 ◽

2016 ◽

Vol 24 (1(115)) ◽

pp. 36-43 ◽

Cited By ~ 6

Author(s):

M. Hossain ◽

A. Abdkader ◽

A. Nocke ◽

R. Unger ◽

F. Krzywinski ◽

...

Keyword(s):

Measurement Methods ◽

Ring Spinning ◽

Yarn Tension ◽

Spinning Process

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A way to reduce friction between ring and traveller of a ring spinning frame

Bangladesh Journal of Scientific and Industrial Research ◽

10.3329/bjsir.v47i4.14072 ◽

2013 ◽

Vol 47 (4) ◽

pp. 421-426 ◽

Cited By ~ 1

Author(s):

HA Begum ◽

MM Helali

Keyword(s):

Centrifugal Force ◽

Spindle Speed ◽

Limiting Factor ◽

Ring Spinning ◽

Mechanical Process ◽

Yarn Tension ◽

Intermittent Contact ◽

System Vibration

The paper presents a method, which applied to the ring of the ring spinning machine will improve its productivity. Through the system vibration is applied on the ring-traveller, which has effects on the centrifugal force of the traveller and helps the traveller to rotate around ring with intermittent contact. The effect of vibration on yarn tension as well as friction between the ring and the traveler and the corresponding raise in temperature of the ring during spinning are measured. An external facility is designed and incorporated in a miniature ring spinning frame to generate and apply vibration to the ring. The miniature ring spinning frame has the facility to vary twist and count of yarn and is modified to vary the spindle speed. Study shows that the ringtraveller friction is affected by the application of vibration. Results obtained with and without the applications of vibration are compared. It is found that yarn tension and friction between the ring and the traveller reduce significantly depending on the type of vibration. Therefore it can be concluded that application of vibration may be a way to reduce friction between the ring and the traveler and thus the mechanical process of twisting and winding can be done at higher speed for higher productivity which is a limiting factor of ring spinning system. Bangladesh J. Sci. Ind. Res. 47(4), 421-426, 2012 DOI: http://dx.doi.org/10.3329/bjsir.v47i4.14072

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