Abstract: In order to do a reasonable mechanism dynamic simulation for GT421 rotary electronic dobby, firstly it needs a reasonable simplification and analysis for main drive mechanism, then completes the modeling, assembly and dynamic simulation to the heald lifting mechanism by Pro / E and ADMAS, and obtains the states of the movement rule and dynamic force of each component in the mechanism. Not only it makes the theoretical analysis and calculation to the relative pause time between the spline shaft and the rocker arm, and checks the main transmission mechanism model, but also it analyzes the strength on the key vulnerable components of the mechanism based on the statics design. In order to further consider the speed how it influences the mechanisms' motion and the components’ stress, it also makes the mechanism simulation in three kinds of typical speeds on the input disc. General simulation analysis will provide some basic theories and bases of design and improvement for developing high-speed and stable shedding devices.

Key words: rotary electronic dobby , heald lifting mechanism , simulation , modeling , shedding device