The Study Of Drawing Machine Roller And Body Parts Of Polyester Staple Fiber

With the high demand of people in the world for polyester, the equipment of polyester production line is also in the development of high speed and large capacity. In order to keep up with the development pace of polyester staple fiber in the world and improve the level of processing equipment of large capacity polyester staple fiber in China, this paper in combination with the needs of the development and application of the new textile machinery “11th five –year plan”, localization of the large capacity polyester staple fiber processing equipment, major technical equipment projects in China. In cooperation with Hi-Tech Heavy Industry Co.,LTD, this paper mainly analyzes the post-processing and part of the structure of drawing machine in the production line of the polyester staple fiber. The object of this study is the main post-processing and technical characteristics of the polyester staple fiber production line, and the structure of the roller and the box body are analyzed. First, by using 3d drawing software Pro/E and finite element software Ansys, make the model of the roller parts and analysis it. After that, intuitively reflect the stress and deformation of the roller components. According to the results of the analysis, the maximum stress of the whole roller components is 132.14 MPa. This stress is less than the allowable stress of the material, 186~310MPa. Roller components can meet the current design in the load condition and do not need the engineer to change the whole structure of it. If the load is increased to the maximum stress value of the roller, the part which is the ladder shaft surface and the circular arc of the flange will be the first under the influence of the load. The stress will expand in the first place. Then, this paper analyzes the body parts of the drawing machine. It is concluded that the large stress regional and deformation area are both the connection of bearing stiffeners and enclosure. In this part, The deformation is 0.526 mm and the maximum stress value is 232 MPa. The maximum stress very close to the allowable stress which is 235 MPa. Therefore, according to these areas of enclosure structure, the writer put forward two improvement measures. The first improvement measure is increasing the thickness of steel plate. After that, it is found that the stress on the body has a distinct improvement. The biggest stress value decreases to 82.4 Mpa. But there is no significant improvement on its deformation. The deformation reduced by only 0.1 mm or so. The other measure is increasing the number of stiffeners. The result is that Its stress is reduced to 74.4 MPa. There is a marked change on its shape, which reduced to 0.288 mm. According to the results, the box body through the second measure of improvement can meet the needs of actual production work. Then the sampling test is made to test the production of the polyester line. They all meet the standards of the state of high strength type cotton classy article.