Journal of Textile Research ›› 2026, Vol. 47 ›› Issue (06): 233-241.doi: 10.13475/j.fzxb.20250802801

• Machinery & Equipment • Previous Articles     Next Articles

Multi-parallel linkage griffe plates drive system design and its process validation

YUAN Ruwang1,2(), MA Jinghan1, BIAN Haiqing3   

  1. 1 School of Mechanical Engineering， Tiangong University， Tianjin 300387， China
    2 Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology， Tiangong University， Tianjin 300387， China
    3 Wujiang Wangong Electromechanical Equipment Co.， Ltd.， Suzhou， Jiangsu 215223， China
  • Received:2025-08-13 Revised:2026-03-24 Online:2026-06-15 Published:2026-08-19

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Abstract:

Objective In order to solve the problems of adjustable range， compound opening and high efficiency of the carrier drive system， according to the jacquard opening process requirements， a multi-parallel linkage carrier drive mechanism is proposed， which is mainly composed of crank linkage， rocker slider mechanism and parallel four-linkage mechanism in tandem and parallel connection， with a simple structure and symmetrical structure of front and rear side openings. And based on the process requirements of the transmission system for verification.

Method A scale synthesis method combining rigid body guidance and sharp return characteristics is proposed， and the crank-rocker mechanism is optimized and designed according to the synthesis level control angle. The process evaluation and transmission function model of the transmission system are established， and the process evaluation indexes of the transmission system are compared and verified under three different fabric width. And through the construction of virtual prototype and experimental verification platform， the prototype simulation and experimental verification are carried out.

Results With a clear leveling control angle of 90°， the drive system's opening range， two-time leveling consistency and drive efficiency were analyzed and verified. The results show that： under different fabric widths， the deviation rate of the opening range shows a decreasing trend in the front opening range and an increasing trend in the rear opening range， but exhibits relatively small fluctuations with changes in fabric width， and the actual range is greater than the designed range， with the maximum value of 0.062% and the maximum deviation value of 0.034 mm； the pole pinch angle of the crank-rocker mechanism can be ignored， and it is considered to have the characteristic of no sharp return， which can realize the demand of compound-action opening. The deviation rates of the two heald leveling consistencies increase with the increase of the designed opening travel and the decrease of the random fabric width， and the displacements in the heald leveling position are all greater than the theoretical values. Under the same conditions， the deviation rate of the two heald leveling consistencies has a maximum value at a weaving machine spindle angle of 270°. Therefore， when the fabric width is 800 mm， the maximum value is 6.28%， and the deviation value is 3.75 mm； the transmission system mainly consists of three parts， and the main influencing factors of the minimum transmission angle are all the design dynamic range， which decreases with the increase of the design dynamic range， and the minimum value of the minimum transmission angle in the transmission system is 70.36°. Through the experimental verification platform to verify the fabric width is 1 200 mm， and the opening range for the limit value of the drive system， the opening range deviation rate of 1.168%， there is a maximum deviation of 0.584 mm， two times the leveling consistency deviation rate of 6.52%， there is a maximum deviation of 1.63 mm.

Conclusion A simple multi-parallel link transmission mechanism is constructed， and its transmission function and process evaluation index model are established. Under the conditions of three different fabric widths， the process indexes such as the opening range， the consistency of two healds and the transmission efficiency of the transmission system are verified through the simulation and experimental validation platform， and the results show that they can meet the design requirements of the jacquard opening process. And the number of jacquard needles can be adjusted by changing the length of different racks， which provides theoretical reference for the design of the drive mechanism of the subsequent jacquard machines.

Key words: jacquard opening, multi-parallel linkage, transmission system design, shedding stroke, process validation

CLC Number: 

  • TS103.1

Fig.1

Tool carrier drive mechanism. （a） Principle of tool carrier drive system； （b） Positioning of tool carrier drive mechanism in heald leveling off"

Fig.2

Relationship between position of tool holder when forming opening"

Fig.3

Rigid body guidance model of rocker-slider mechanism"

Fig.4

Crank rocker mechanism model"

Tab.1

Overall mechanism design parameters"

I1x/mm 470 S/mm 50~120（可调）
I1y/mm 185 O2x/mm 800/1 000/1 200
l3a/mm 230 O2y/mm 230
θ/（°） 0

Tab.2

Rocker slider mechanism design results"

S/mm l3b/mm l4/mm C1x/mm C1y/mm ψ/（°） ψC1/（°）
50 185.001 470.334 -0.334 185.000 15.534 -0.103
55 185.000 470.405 -0.405 185.000 17.098 -0.125
60 184.999 470.483 -0.483 184.998 18.666 -0.149
65 184.999 470.567 -0.567 184.999 20.238 -0.175
70 185.000 470.658 -0.658 184.999 21.813 -0.204
75 185.000 470.756 -0.756 184.998 23.392 -0.234
80 185.000 470.862 -0.862 184.998 24.976 -0.267
85 185.000 470.975 -0.975 184.997 26.564 -0.302
90 185.001 471.094 -1.094 184.997 28.158 -0.339
95 185.000 471.222 -1.222 184.996 29.758 -0.378
100 185.000 471.357 -1.357 184.995 31.363 -0.420
105 185.000 471.499 -1.499 184.994 32.974 -0.464
110 185.000 471.649 -1.649 184.993 34.592 -0.511
115 185.000 471.806 -1.806 184.991 36.217 -0.559
120 185.000 471.971 -1.971 184.990 37.850 -0.611

Tab.3

Rocker pendulum angle offset rate"

S/mm ψy/（°） Eψ/% S/mm ψy/（°） Eψ/%
50 15.533 -0.007 90 28.156 -0.007
55 17.097 -0.007 95 29.756 -0.007
60 18.665 -0.008 100 31.361 -0.006
65 20.236 -0.008 105 32.973 -0.005
70 21.811 -0.008 110 34.591 -0.004
75 23.390 -0.008 115 36.217 -0.002
80 24.974 -0.008 120 37.850 0
85 26.562 -0.008

Fig.5

Shedding control angles φ1 and φ3a"

Tab.4

Crank rocker mechanism design results"

S/
mm		 l1/
mm		 l2/mm
O2x=1 200 O2x=1 000 O2x=800
50 31.10 1 200.403 1 000.483 800.604
55 34.20 1 200.487 1 000.585 800.731
60 37.30 1 200.580 1 000.695 800.869
65 40.42 1 200.681 1 000.817 801.020
70 43.52 1 200.789 1 000.947 801.183
75 46.62 1 200.905 1 001.086 801.357
80 49.73 1 201.030 1 001.236 801.544
85 52.84 1 201.163 1 001.395 801.743
90 55.94 1 201.303 1 001.563 801.953
95 59.05 1 201.452 1 001.742 802.176
100 62.16 1 201.609 1 001.930 802.411
105 65.28 1 201.774 1 002.128 802.659
110 68.38 1 201.947 1 002.335 802.917
115 71.48 1 202.127 1 002.551 803.187
120 74.60 1 202.317 1 002.779 803.471

Fig.6

Opening dynamic range deviation δS"

Fig.7

Angle between extreme positions θ"

Fig.8

Offset rate before and after opening of two flat round"

Fig.9

Minimum transmission angle of transmission system.（a） γmin1； （b） γmin2 and γmin3"

Fig.10

Virtual prototype of knife lifter drive mechanism"

Fig.11

Experimental platform for tool carrier drive system"

Fig.12

Prototype simulation and experimental results"

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