Elastic Dynamic Analysis on the Scraping Paste Mechanism of the Printing Equipment for Silicon Solar Cells

摘要

Elastic-dynamic analysis of a scraping paste mechanism for screen printing is carried out in this paper to improve the printing quality during the deposition process. Based on finite element method, Kineto-Elasto dynamic (KED) assumption and Lagrange equation, the elastic dynamic model of the scraping paste mechanism is established firstly. Comparing the natural frequencies of the system obtained by two methods, the effectiveness of the proposed modeling method is verified. Moreover, the sensitivity of dynamic displacement is also obtained by the direct differential method. Then the elastic deformation subjected to the length of the effective sliding shaft, the section diameter and the printing pressure is investigated by numerical simulation in Matlab. The results show that, the elastic deformation of the sliding shaft is not a constant during the printing process, but increases in non-linear along with the increase of the length of the effective sliding shaft, decreases along with the increase of the section diameter. As the printing pressure rises, its elastic deformation also increases in non-linear. The results provide necessary information and guidance for process parameters optimization, structure improvement to achieve high accuracy printing.