Effect of parameters of drafting assembly of spinning frame on dynamic positive pressure between aprons

An investigation into the effect of structural parameters of the spinning on the dynamic positive pressure between aprons used UG to develop a 3-D model of the drafting assembly of the frame and conducted a simulative analysis using ABAQUS,thus obtained the positive pressure distribution between aprons under different parameters of top pin,the spring of top apron cradle,compression spring and bottom pin.It is found through analysis that variation in the stiffness of the spring of top apron cradle and compression spring has great impact on the positive pressure.For spinning frame A513 in use,a slight reduction in the width of bottom pin will be more conducive to rationalization of the distribution of positive pressure.The simulated results of this study can be used as a reference for the improvement and optimization of the structure of drafting assembly.