The Kinematic And Dynamic Analysis For Double Apron Draft Spinning Device

Spinning technology is the basic technology of textile industry. Generally, the whol e spi nni ng process goes through 9 processing procedures of spinning equipment. The short fiber bundles drawing accomplished by drawing, pin comb, roving, yarn and other textile equipment. Therefore, drawing processing is one of the most important spinning processes.This article described the mechanism of roller drafting system and analyzed the fiber loading and fiber movement speed change situation of roller drafting process, structural characteristics of the drafting equipment, work characteristics and material properties of components. Dynamic analysis method of multi-body finite element by ABAQUSwasalso introduced. For the work situation of spinning drafting equipment, the three-dimensional finite element model of spinning drafting equipment was established through CAD software and dynamic simulation of spinning drafting equipment completed by large-scaleABAQUSfiniteelement software.These two operating parameters and structural parameters of aprons speed stability and Aprons flexible jaw volatility, which measure the dynamic stability indicators for Double apron draft spinning device and impacted drafting regional central friction sector layout of double apron draft spinning equipment, conducted the numerical analysis.According to this paper finite element numerical analysis results, the relevant parameters were discussed which infected the double apron drafting system stability and apron central friction layout.The results show that the cradle spring pressure and initial pressure has great influence on the drafting device stability The tension idler roller, under the pin surface roughness and the next marketing platform width has great influence on the central friction sector layout of drafting device. Process parameters and structural parameters remain unchanged and the aprons slippery rate increased with the increase of pressure drop cradle, eventually reached a stable working state. The swing stability of spring swing top pin enhanced with the increase of initial spring pressure. The aprons central friction sector layout optimization and the decrease of apron hanging phenomenon could conducted through increasing roller tension and decreasing the surface roughness of lower pin. Reducing the width of the lower pin platform enables the closer contact in the arch elastic layer area for the upper and lower apron. The upper and lower apron control was reinforced for the fiber. Reducing the height of the lower pin platform greatly increased the central friction in elastic layer sector, improved the wholefront friction area and stretch gauze control.