Effect of Yarn Characteristic on Yarn Tension during Unwinding from Package. (Dept. T)

A description of an experimental investigation of the variations in yarn tension during both ring and rotor open-end spinning which have frequencies equal to, or greater than, the rotational speed of the system is given. Typical results are illustrated and discussed both in terms of statistical parameters such as the coefficient of variation and in terms of their spectra. Tension variations during rotor spinning are shown to have, in general, a much less pronounced periodic structure then the corresponding variations during ring spinning.

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A novel optimal sensitivity design scheme for yarn tension sensor using surface acoustic wave device

Ultrasonics ◽

10.1016/j.ultras.2014.03.004 ◽

2014 ◽

Vol 54 (6) ◽

pp. 1649-1655 ◽

Cited By ~ 2

Author(s):

Bingbing Lei ◽

Wenke Lu ◽

Changchun Zhu ◽

Qinghong Liu ◽

Haoxin Zhang

Keyword(s):

Acoustic Wave ◽

Surface Acoustic Wave ◽

Yarn Tension ◽

Design Scheme ◽

Surface Acoustic Wave Device ◽

Tension Sensor ◽

Acoustic Wave Device ◽

Wave Device

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Experimental investigation of effect of balloon length on yarn tension during unwinding

International Journal of Clothing Science and Technology ◽

10.1108/ijcst-08-2018-0105 ◽

2019 ◽

Vol 31 (4) ◽

pp. 495-509

Author(s):

Ozge Celik ◽

Recep Eren

Keyword(s):

Process Efficiency ◽

Laser Sensor ◽

Content Type ◽

Yarn Tension ◽

Tension Change ◽

Spun Yarns ◽

Continuous Filament ◽

Set Up ◽

Different Diameters ◽

Tension Control System

Purpose Yarns of different types are unwound from bobbins in different processes like warping, weaving, doubling and re-winding. It is required that yarn tension remains constant during unwinding in all these processes. Otherwise, it ends with product quality and process efficiency problems. The purpose of this paper is to investigate experimentally the effect of balloon length on yarn tension change with respect to bobbin diameter during unwinding in an attempt to obtain a minimum yarn tension variation. Design/methodology/approach An experimental set up was built. Bobbin diameter was measured by a laser sensor and yarn tension was measured by a single yarn tension sensor. Both sensor outputs were interfaced to a PC via a DAQ cad. A software program was developed in C programming language to read and record the tension and bobbin diameter simultaneously. Experimental study was conducted with three different balloon lengths for both continuous filament and spun yarns of four different yarn numbers and five different unwinding speeds. Findings Results showed that yarn tension change with bobbin diameter was affected in different ways with balloon length depending on yarn number, unwinding speed and yarn type. Originality/value Available literature on the effect of balloon length on yarn tension bobbin diameter relation is limited and measurements were generally conducted for three different bobbin diameters. Yarn tension bobbin diameter relation is obtained in this research for at least eight different diameters and more for three different balloon lengths covering practical application ranges. The results obtained can be used in the design of tension control system for warping and winding machines as well as for setting these machines for optimum efficiency.

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Quality Control Technology for Synthetic Fiber Manufacturing Process by Non-Contact Tension Meter. Part 2. Non-Contact Measuring System for Running Yarn Tension.

Sen i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan) ◽

10.4188/transjtmsj.53.t15 ◽

2000 ◽

Vol 53 (1) ◽

pp. T15-T24

Author(s):

Takashi Iwade ◽

Masazumi Imae ◽

Yukiko Shintani ◽

Masaru Nakazawa

Keyword(s):

Quality Control ◽

Manufacturing Process ◽

Measuring System ◽

Synthetic Fiber ◽

Control Technology ◽

Yarn Tension ◽

Fiber Manufacturing

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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

Fibres and Textiles in Eastern Europe ◽

10.5604/01.3001.0012.2528 ◽

2018 ◽

Vol 26 (5(131)) ◽

pp. 32-40 ◽

Cited By ~ 2

Author(s):

Mahmud Hossain ◽

Christian Telke ◽

Anwar Abdkader ◽

Maria Sparing ◽

Tilo Espenhahn ◽

...

Keyword(s):

Magnetic Bearing ◽

Spindle Speed ◽

Frictional Heat ◽

Ring Spinning ◽

German Research Foundation ◽

Yarn Tension ◽

Tension Distribution ◽

Spinning Process ◽

Fundamental Research ◽

Superconducting Magnetic Bearing

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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Schemes Selection of Yarn Tension Detection and Control Based on Fuzzy Multiple Attribute Group Decision Making

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.694-697.2829 ◽

2013 ◽

Vol 694-697 ◽

pp. 2829-2834

Author(s):

Yan Li ◽

Hui Min Li ◽

Yi Li

Keyword(s):

Decision Making ◽

Group Decision Making ◽

Group Decision ◽

Fuzzy Topsis ◽

Yarn Tension ◽

Attribute Weights ◽

Multiple Attribute ◽

The Individual ◽

Topsis Technique ◽

And Control

To evaluate the yarn tension detection and control schemes in rapier looms, a fuzzy multiple-attribute group decision making problem is proposed for the schemes selection. Firstly, important degrees of every attributes from each expert are considered. The individual opinions of each expert are integrated with the similarity of the decision group. And the synthesized weights of each expert are calculated. Secondly, with the aggregation of experts opinions, the group attribute-weights matrixes are obtained. Then the fuzzy TOPSIS (Technique for Order Preference by Similarity to an Ideal Solution) is used to sequence the alternatives, and the optimal scheme is decided for yarn tension detection and control system, the decision results illustrate the feasibility and effectiveness of the developed method.

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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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