Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (04): 122-128.doi: 10.13475/j.fzxb.20180403607

• Machinery & Accessories • Previous Articles     Next Articles

Detaching roller drive mechanism of a comber based on hybrid-driven

YANG Haipeng1,2, LI Xinrong1,2(), LÜ Pengfei1,2, WANG Zhenyu1,2   

  1. 1. School of Mechanical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
    2. Key Laboratory of Modern Mechanical and Electrical Equipment Technology, Tianjin 300387, China
  • Received:2018-04-17 Revised:2018-12-01 Online:2019-04-15 Published:2019-04-16
  • Contact: LI Xinrong E-mail:lixinrong7505@hotmail.com

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Abstract:

Aiming at the problem of the speed limit of the vibration of the mechanical detaching roller drive mechanism of the comber, the scheme of the single-drive detaching roller of the dual servo motor was proposed. First of all, according to the requirement of the combing technology, based on the idea of least square method, a curve was optimized to fit the displacement key points in the moving state of the detaching roller, and it satisfied the rule of the detaching roller motion. Secondly, based on the idea of hybrid-drive, the motion law was reasonably distributed to two power sources. Finally, virtual prototype was established in Adams environment for simulation analysis and was verified by experiment. The research results show that this scheme can accurately realize the motion law of the separation roller. The maximum angular acceleration of the two servo motors decreases by 72.05% compared with that of the single servo motor, which is beneficial to reduce energy consumption. The design eliminates the limitation in speed due to the vibration of mechanical structure. The speed can be adjusted according to different kinds of cotton, which increases the flexibility of the mechanism.

Key words: comber, hybrid-driven, detaching roller, drive mechanism, differential gear train

CLC Number: 

  • TS112.2

Fig.1

Displacement diagram of detaching roller"

Fig.2

Distribution diagram of key points of detaching roller displacement curve"

Tab.1

Key points of detaching roller motion curve(°)"

关键点i 锡林转过角度 分离罗拉转过角度
A 0 0.00
B 18 -123.76
C 54 -293.35
D 72 -233.77
E 144 4.58
F 225 114.59
G 360 119.18

Tab.2

Value of variables obtained from calculation"

系数变量 优化结果 系数变量 优化结果 系数变量 优化结果
a0 -55.322 a3 31.619 b5 -5.396
a1 -52.230 b3 12.476 a6 2.350
b1 131.660 a4 18.549 b6 -3.153
a2 34.300 b4 -2.723 ω -0.017
b2 51.977 a5 7.846 k 0.323

Fig.3

Movement law of detaching roller. (a) Fitting curve of angular displacement and angular velocity; (b) Fitting curve of angular acceleration and jerk"

Fig.4

Speed curve of two servo motors"

Fig.5

Schematic diagram of differential gear system"

Fig.6

Hybrid drive mechanism diagram"

Fig.7

Actual angular velocity and acceleration motion rule of servo motor. (a)Actural angular velocity; (b)Actural angular acceleration"

Fig.8

Separation roller angular velocity and angular acceleration curve output from Adams"

Fig.9

Physical drawing of detaching roller drive mechanism"

Fig.10

Displacement curve of detaching rollers of comber"

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