Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (12): 167-172.doi: 10.13475/j.fzxb.20210501006

• Machinery & Accessories • Previous Articles     Next Articles

Detection method and dynamic characteristics of weft yarn delivery

PENG Laihu1(), ZHANG Yujuan1, LÜ Yongfa2, DAI Ning1, LI Jianqiang3   

  1. 1. The Center for Engineering Technology of Modern Textile Machinery & Technology of Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    2. Zhejiang Rifa Textile Machinery Technology Co., Ltd., Shaoxing, Zhejiang 312500, China
    3. Research Institute of Zhejiang Sci-Tech University in Longgang, Wenzhou, Zhejiang 325000, China
  • Received:2021-05-07 Revised:2022-04-20 Online:2022-12-15 Published:2023-01-06

RichHTML

12

PDF (PC)

68

Abstract:

Aiming at the problem that the tension and count regularity of yarn are difficult to be dynamically detected, which may lead to abnormal weft knitting, a photoelectric sensor-based non-contact yarn delivery state detection method was developed, and a binocular photoelectric sensor differential measurement was proposed. Dual-channel photoelectric components were innovatively designed to construct two-channel yarn dynamic sensing differential signal pairs to eliminate common-mode signal interference in order to pick up the weak yarn state signals by eliminating the influence of noise. On this basis, the yarn delivery state detection experiment was designed to test the real-time voltage signal when the yarn was delivered under different tensions and with different diameters, to analyze the signal average value, variance and numerical frequency distribution curve, and to reveal the dynamic characteristics of the yarn. The results show that as the yarn tension increases, the average value and variance of the difference signal gradually decrease, indicating that the yarn fluctuation amplitude is gradually decreasing, and the overall yarn fluctuation tends to be stable. Changing the yarn thickness will cause the yarn fluctuating amplitude to increases gradually, and the yarn fluctuation difference to gradually increase. When the yarn thickness increases to a certain value, the yarn fluctuation amplitude and the yarn fluctuation difference tend to be stable.

Key words: yarn delivery, voltage signal, yarn tension, photoelectric sensor, frequency distribution, weft knitting machine

CLC Number: 

  • TS184.1

Fig.1

Schematic diagram of yarn feeding on knitting machine"

Fig.2

Schematic diagram of yarn status in induction zone. (a) Yarn in static; (b) Yarn in motion"

Fig.3

Waveform diagram of IN1 and IN2 output. (a) Yarn in static; (b) Yarn in motion"

Fig.4

Signal detection circuit"

Fig.5

Experiment platform"

Fig.6

Threshold voltage curve at normal work of yarn"

Fig.7

Evaluation index of yarn jitter at different speeds. (a) Average; (b)Variance"

Fig.8

Frequency distribution curve of yarn signal voltage under different tension"

Fig.9

Evaluation index of yarn jitter of different thickness. (a)Average; (b)Variance"

Fig.10

Frequency distribution curve of voltage signal in different thickness yarns"

Fig.11

Analysis of voltage signals of different tensions in different thicknesses yearns"

[1] 樊理山, 来侃, 孙润军, 等. 三组分复合纱线的拉伸断裂特征与力学模型[J]. 纺织学报, 2010, 31(3): 36-39.
FAN Lishan, LAI Kan, SUN Runjun, et al. Tensile strength of tri-component composite yarn and its mechanical model[J]. Journal of Textile Research, 2010, 31(3): 36-39.
[2] 张灵婕, 缪旭红. 纱线断裂功对经编织造性能的影响[J]. 纺织学报, 2018, 39(12) :37-40, 46.
ZHANG Lingjie, MIAO Xuhong. Influence of yarn rupture work on performance of warp knitting[J]. Journal of Textile Research, 2018, 39(12): 37-40, 46.
doi: 10.1177/004051756903900106
[3] 诸葛振荣, 柏建新, 刘伟成. Intranent在电子提花机生产监控中的应用[J]. 纺织学报, 2002, 23(3): 52-53.
ZHUGE Zhenrong, BAI Jianxin, LIU Weicheng. The application of Intranet in electronic jacquard production monitoring[J]. Journal of Textile Research, 2002, 23(3): 52-53.
[4] 黄世梅, 傅金枝. 针织大圆机断纱故障检测方法[J]. 实验室研究与探索, 2014, 33(4): 2-3.
HUANG Shimei, FU Jinzhi. Detection method of yarn breakage on circular knitting machine[J]. Laboratory Research and Exploration, 2014, 33(4): 2-3.
[5] ELDAR M. Line-laser-based yarn shadow sensing break sensor[J]. Optics and Lasers in Engineering, 2010, 49(3): 313-317.
doi: 10.1016/j.optlaseng.2010.10.003
[6] 顾金华. 光电反射式细纱机纱线断头检测机构:201220014375.X[P]. 2012-01-13.
GU Jinhua. Photoelectric reflection type spinning frame yarn break detection mechanism:201220014375.X[P]. 2012-01-13.
[7] 任尧, 袁嫣红, 向忠. 非接触式断纱检测系统设计[J]. 浙江理工大学学报(自然科学版), 2022(2): 79-84.
REN Yao, YUAN Yanhong, XIANG Zhong. Design of non-contact broken yarn detection system[J]. Journal of Zhejiang Sci-Tech University (Natural Science Edition). 2022(2): 79-84.
[8] 吴英刚, 彭来湖, 胡旭东. 圆纬机主动式送纱控制系统设计[J]. 成组技术与生产自动化, 2017(4):26-30.
WU Yinggang, PENG Laihu, HU Xudong. Design of active yarn feeding control system for circular knitting machine[J]. Group Technology and Production Automation, 2017(4) :26-30.
[9] 杨大伟, 缪旭红. 经编小提花间隔织物花型设计与工艺实践[J]. 针织工业, 2017(2) :10-13.
YANG Dawei, MIAO Xuhong. Pattern design and process practice of warp knitted small jacquard spacer fabric[J]. Knitting Industries, 2017(2) :10-13.
[10] 缪旭红, 李筱一. 我国双针床经编技术及产品最新进展[J]. 纺织导报, 2015(7) :30-34.
MIAO Xuhong, LI Xiaoyi. The latest development of double needle bed warp knitting technology and products in my country[J]. China Textile Leader, 2015(7):30-34.
[11] 吴震世. 论曲面上的纱线的导向与纱线张力[J]. 纺织科学研究, 1997(1) :37-47.
WU Zhenshi. On the yarn guide and yarn tension on the curved surface[J]. Textile Science Research, 1997(1): 37-47.
[1] TU Jiajia, SUN Lei, MAO Huimin, DAI Ning, ZHU Wanzhen, SHI Weimin. Automatic bobbin changing technology for circular weft knitting machines [J]. Journal of Textile Research, 2022, 43(07): 178-185.
[2] GUO Min, GAO Weidong, ZHU Bo, LIU Jianli, GUO Mingrui. Test method for abrasion resistance of sized yarn under simulated weaving conditions [J]. Journal of Textile Research, 2021, 42(11): 46-50.
[3] HONG Yan, SHEN Xiaolin, TIAN Ye, WU Sanbao, YANG Jin. Measurement method of yarn torque using a free rotor [J]. Journal of Textile Research, 2021, 42(10): 61-66.
[4] DAI Ning, PENG Laihu, HU Xudong, CUI Ying, ZHONG Yaosen, WANG Yuefeng. Method for testing natural frequency of weft knitting needles in free state [J]. Journal of Textile Research, 2020, 41(11): 150-155.
[5] SUN Shuai, MIAO Xuhong, ZHANG Qi, WANG Jin. Yarn tension fluctuation on high-speed warp knitting machine [J]. Journal of Textile Research, 2020, 41(03): 51-55.
[6] XU Yunlong, XIA Fenglin. Influence of guide-bar swing on instantaneous yarn demand and yarn tension on double needle bar warp knitting machine [J]. Journal of Textile Research, 2019, 40(06): 106-110.
[7] . Working mechanism of warp knitting yarn tension compensator [J]. Journal of Textile Research, 2018, 39(11): 140-144.
[8] . Control technology for active dynamical yarn feeding for circular weft knitting machine [J]. Journal of Textile Research, 2018, 39(09): 153-159.
[9] . Evaluation of dynamic tension of warp knitting yarn [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(02): 68-72.
[10] . Modeling and influence about speed of released-yarn in braiding spindles on yarn tension [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(06): 111-117.
[11] . Analysis on yarn tension properties of balloon bottom of BC9 ring [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(08): 119-124.
[12] . Dynamic tension analysis on winding yarn in jacquard device of tufting carpet machine [J]. JOURNAL OF TEXTILE RESEARCH, 2015, 36(07): 136-141.
[13] . Needle drive design of circular weft knitting machine based on high speed serial bus [J]. JOURNAL OF TEXTILE RESEARCH, 2015, 36(05): 110-114.
[14] DING Cai-hong;TANG Jun . Mechanism analysis of yarn tension stabilization using pulling rollers [J]. JOURNAL OF TEXTILE RESEARCH, 2010, 31(2): 110-114.
[15] LI Dejun;LIU Jie;WU Zhouqiao;WANG Shuibing. Broken filaments detection device for viscose filaments [J]. JOURNAL OF TEXTILE RESEARCH, 2008, 29(9): 117-120.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
京ICP备14006648号
Copyright 2021 © Editorial office of Journal of Textile Research
Supported by Beijing Magtech Co.Ltd