Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (09): 173-179.doi: 10.13475/j.fzxb.20180900907

• Machinery & Accessories • Previous Articles     Next Articles

Parameter characteristics of weft insertion mechanism of rapier loom capable of simply adjusting reed width

ZHOU Xiangqin1,2(), GU Yeqin1, WU Zhenyu1   

  1. 1. The Research Center of Modern Textile Machinery Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    2. Wanli Textile Machinery Research Institute, Hangzhou, Zhejiang 311243, China
  • Received:2018-09-03 Revised:2019-03-12 Online:2019-09-15 Published:2019-09-23

RichHTML

19

PDF (PC)

173

Abstract:

In order to simplify the adjustment process of cloth width in rapier loom, a new design criterion for weft insertion mechanism was proposed by researching the relationship between the rapier position and actions of assistant devices, which means the weft insertion mechanism should be designed with unchanged rapier displacement outside of the shed (assistant displacement) and unchanged rapier position where weft is handed over during the process of adjusting reed width. Based on vector analysis method, the motion equations of a weft insertion mechanism containing a spatial linkage and a planer linkage were derived, and the rapier motion curve was obtained. The influences on rapier motion curve were discussed from sub mechanisms. The result shows that certain weft insertion mechanism exists, and when its original position satisfies a certain condition, regardless of the changes in cloth width, the assistant displacement of rapier stays unchanged. When the guider of point used for adjusting the reed width meets a certain condition, the rapier position where weft is handed over keeps in the same site.

Key words: rapier loom, weft insertion mechanism, cloth width, parameter characteristic

CLC Number: 

  • TH112.1

Fig.1

Weft insertion process. (a) Process of rapier motion; (b) Relative position between dust collector and rapier; (c) Relative position between releasing bar and rapier; (d) Relationship between cloth width and motion process of rapier"

Fig.2

Motion curve of rapier"

Fig.3

Spatial linkage used for weft insertion in rapier loom"

Fig.4

Schematic view of weft insertion mechanism"

Fig.5

Analysis schematic view of adjusting mechanism for weft insertion. (a) The first location of adjusting mechanism for weft insertion; (b) The second location of adjusting mechanism for weft insertion"

Tab.1

Parameters of mechanism"

参数量符号 参数数值 参数量符号 参数数值
γ/(°) 33.000 l1/mm 110.000
δ/(°) 57.000 l2/mm 155.000
η/(°) 41.020 l3/mm 140.000
ε/(°) 168.085 l4/mm 155.000
r/mm 186.175 i 5.500

Fig.6

Composition of rapier motion curve"

Tab.2

Parameters of mechanism"

参数量符号 参数数值 参数量符号 参数数值
γ/(°) 28.000 l1/mm 150.000
δ/(°) 120.000 l2/mm 245.000
η/(°) -9.808 l3/mm 108.000
175.400
ε/(°) 226.755 l4/mm 354.000
r/(°) 186.179 i 4.862

Fig.7

Example of adjustment mechanism for weft insertion"

Fig.8

Rapier curve with unchanged rapier assistantdisplacement. (a) Curve of rapier displacement;(b) Curve of rapier velocity; (c) Curve of rapier acceleration"

Fig.9

3-D Model of application case"

Fig.10

Physical display of application case"

[1] RECEP Eren, MESRUR Erturk, BARIS Hascelik. Kinematic design and motion analysis of spatial rapier drive mechanisms[J]. Textile Research Journal, 2014,84(19):2065-2073.
[2] 周香琴. 球面4R机构运动特性研究及其应用探索[J]. 中国机械工程, 2011,22(2):153-158.
ZHOU Xiangqin. Kinematics characteristics research of spherical 4R mechanism and its application explore[J]. China Mechanical Engineering, 2011,22(2):153-158.
[3] 张雷, 贺虎, 孔佳元. 含间隙和尺寸误差空间连杆引纬机构运动精度综合分析[J]. 纺织学报, 2016,37(6):124-135.
ZHANG Lei, HE Hu, KONG Jiayuan. Comprehensive analysis of motion accuracy for spatial linkage weft insertion mechanism with clearance and dimensional errors[J]. Journal of Textile Research, 2016,37(6):124-135.
[4] 周香琴, 张雷. 剑杆织机空间连杆引纬机构载荷特性研究[J]. 中国机械工程, 2013,24(14):1881-1885.
ZHOU Xiangqin, ZHANG Lei. Loading characteristic research of spatial linkage weft insertion mechanism in rapier loom[J]. China Mechanical Engineering, 2013,24(14):1881-1885.
[5] 江浙, 周香琴, 王琴龙, 等. 剑杆织机空间连杆引纬机构运动及载荷特性研究[J]. 机电工程, 2015,32(10):1325-1329.
JIANG Zhe, ZHOU Xiangqin, WANG Qinlong. Kinematics and loading characteristics research of spherical 4R mechanism[J]. Journal of Mechanical & Electrical Engineering, 2015,32(10):1325-1329.
[6] 张雷, 余克龙, 陈少钟, 等. 基于ANSYS 和ADAMS空间四连杆机构的柔性动力学仿真[J]. 纺织学报, 2013,34(5):116-120.
ZHANG Lei, YU Kelong, CHEN Shaozhong, et al. Flexible dynamics simulation for spatial four bar linkage weft insertion mechanism based on ANSYS and ADAMS[J]. Journal of Textile Research, 2013,34(5):116-120.
[7] 周香琴, 杨胜皎, 王琴龙, 等. 剑杆织机惯性载荷变化规律及提速试验[J]. 纺织学报, 2017,38(8):144-149.
ZHOU Xiangqin, YANG Shengjiao, WANG Qinlong, et al. Law of inertial load and speed increasing practice on rapier loom[J]. Journal of Textile Research, 2017,38(8):144-149.
[8] KAZUO Washida, HIDEHIKO Sugimoto, ATUJI Masuda. Servo-controlled weft yarn inserting mechanism for rapier loom[J]. Journal of Textile Engneer, 2000,46(3):83-92.
[9] KINARI Toshiyasu. Weaving machinery and its related technologies[J]. Journal of Textile Engineering, 2007,53(2):43-52.
[10] 雷利照. 双侧剑杆织机中央交接纬合理性探讨[J]. 纺织学报, 2010,31(10):124-128.
LEI Lizhao. Investigation into rationality of weft handover at center of shed on a rapier loom with two rapiers[J]. Journal of Textile Research, 2010,31(10):124-128.
[1] ZHANG Zhuhui, ZHANG Diantang, QIAN Kun, XU Yang, LU Jian. Weaving process and off-axial tensile mechanical properties of wide-angle woven fabric [J]. Journal of Textile Research, 2020, 41(08): 27-31.
[2] WEI Zhan, JIN Guoguang, LI Bo, SONG Yanyan, LU Chunhui. Modeling and simulation of contact force generated by beating-up cam in rapier looms [J]. Journal of Textile Research, 2020, 41(03): 154-159.
[3] . Design method for weft insertion mechanism of super width automatic loom based on electromagnetic launch [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(07): 130-136.
[4] . Smooth and reverse design of conjugated cams of weft insertion [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(12): 141-149.
[5] . Inertial load change rule and speed increasing test of rapier loom [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(08): 144-149.
[6] . Design of displacement diagram for rapier in variable lead screw weft insertion mechanism [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(04): 121-126.
[7] . JIAO YU cutting algorithm in Qin bamboo slips and traditional cutting technique in Tibetan robes [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(04): 109-114.
[8] . Design of 3-D woven fabric selvage modeling process [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(04): 50-54.
[9] . Comprehensive analysis of motion accuracy for spatial linkage weft insertion mechanism with clearance and dimensional errors [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(06): 124-129.
[10] . Grass cloth with traditional characteristic produced by modern technology [J]. Journal of Textile Research, 2016, 37(05): 37-41.
[11] . Dynamic analysis of flexible follower conjugate cams beating-up mechanism in rapier loom [J]. Journal of Textile Research, 2016, 37(05): 137-142.
[12] . Flexible dynamics simulation for space four bar linkage weft insertion mechanism based on ANSYS and ADAMS [J]. JOURNAL OF TEXTILE RESEARCH, 2013, 34(5): 116-120.
[13] SONG Ya-Nan, XU Rong-Hua, WANG Qin-Ruo. Design and analysis on filter of rapier Loom’s warp tension control [J]. JOURNAL OF TEXTILE RESEARCH, 2012, 33(2): 115-120.
[14] . Noise Estimation and Filter Design of Rapier Loom’s Tension Control [J]. JOURNAL OF TEXTILE RESEARCH, 2011, 32(8): 128-132.
[15] LIN Wanhuan;WANG Ying;ZHAO Xiong;CHEN Jianneng. Establishment and application of kinematics equations of beating-up motion based on Hermite polynomials [J]. JOURNAL OF TEXTILE RESEARCH, 2011, 32(3): 127-132.
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