JIANG Zhe1, ZHOU Xiang qin1, WANG Qin long2

 

(1. Zhejiang Key Laboratory of Textile Equipment, Zhejiang Sci Tech University, Hangzhou 310018, China;

 

2. Wanli Textile Machinery Research Institute, Hangzhou 310018, China)

 

 

Abstract: Aiming at the problems of the special kinetic characteristics and load changes of spherical space in rapier loom weft insertion mechanism, the geometric equivalence of spatial kinematics and dynamic equilibrium were investigated for deducing motion functions and bearing load. After the analysis of moving member′s output kinetic characteristics and inertial load characteristics in the spherical mechanism, the direct expression relationship between output angle, kinetic energy, inertia moment and input angle was established, the 3D model established was imported into Adams software, mechanism analysis function was used to make dynamic simulation of weft insertion mechanism, and curves which were obtained by theory and simulation were compared. The results indicate that two structural parameters of spherical 4R mechanism affect the spatial configuration and motion space of spatial linkage, which is the basis elements of box design; The load of spatial linkage can be calculated by formula.

 

Key words: weft insertion; spherical 4R mechanism; kinematics; load characteristics