化妆棉纵切过程数值模拟及工艺参数优化OA

In view of the burrs problems and deformation of the cosmetic pad raw material after being cut by the disc cutter in the production process of cosmetic pad,the process parameter optimization research was carried out to improve the quality of the longitudinal cutting of the cosmetic pad.Firstly,the process of longitudinal cutting was analysed,the process parameters that affect the quality of slitting were summarised.Secondly,based on the mechanical properties of different parts of the cosmetic pad,it was divided into three components:non-woven fabric,cotton and cotton hard strip.Material constitutive models for these components were established for calibration verification.Subsequently,finite element model of the longitudinal cutting process of cosmetic cotton was established by using ANSYS LS-Dyna,shear deformation and fracture under different process parameters were analysed.By adjusting the overlap,side pressure and shear speed,the burr and deformation of the cosmetic pad during longitudinal cutting were reduced,thereby improving cosmetic pad product quality.The results showed when the overlap was 1.5 mm between the upper and lower disc cutter,the plastic deformation of cosmetic pad during longitudinal cutting was the smallest.When side pressure of upper and lower disc cutter was about 50 N,rapid and tight contact could be ensured.When shear speed was 300 mm/s,shear burrs of cosmetic pad could be effectively controlled.