Finite Element Analysis of the Model of Mechanical Behavior of SUS420 Steel Scraping Blade in Printing Engineering

Abstract

The scraping blade is a critical device for maintaining the uniform thickness of an anilox-developing roll and for removing the excess of ink, water and contamination from the smooth non-engraved portions of the image carrier by controlling the pressure on the developing roller in the printing machine. Not much research can be seen in the literature, related to the material and the geometrical shape of the scraping blade. Due to this fact, a novel simulation method was implemented in ANSYS to control the mechanical behavior of scraping blade and of the anilox rolls. Numerical simulation was carried out using the method of finite element analysis for analysis of the system of SUS420-chrome-containing martensitic stainless steel blade. The purpose of this study was to develop a model of structural behavior to minimize excessive stresses and wears and to achieve an optimal design of the scraping SUS420 stainless steel blade. As a design optimization tool, the finite element analysis was engaged to perform static analysis of scraping structures, scraping blade holders and blades. Flexural deflection analysis and structure optimal design methodology were developed to improve the blade life span. According to the outcomes of this paper, the scraping blade was improved after optimization of the wall thickness and of the tip angle. Thus the smooth scraping quality was improved. These results suggest that a new design with the new blade tip could be beneficial for designers and manufacturers.