凹版印刷机导向辊的挠曲变形研究

Research on the deflection of the guide roller in gravure printing machine

以凹版印刷机导向辊为研究对象,将其简化为变截面简支梁模型,利用简支梁理论的数值计算方法对导向辊的挠度进行了分析与研究。分析了在薄膜压力和自身重力的作用下,不同轴肩长度、不同薄膜张力和三种不同壁厚的导向辊的挠曲变形情况,对导向辊的挠曲变形进行了ANSYS仿真和实验测试。研究结果表明:当导向辊的壁厚一定时,随着薄膜张力的增加,导向辊的挠度也随着增加;薄膜张力一定时,随着轴肩长度的增大,导向辊的挠度减小;导向辊轴肩越长,导向辊的挠度随张力增加而增加的趋势变得缓慢。

Taking the guide roller of the gravure printing machine as the research object,the roller is simplified as a simply supporting beam model with variable cross section.The deflection of the guide roller is analyzed and studied by numerical method based on the theory of simply supporting beam.Flexural deformation of the guide roller with different shoulder lengths,different web tensions and three different wall thicknesses are analyzed under the function of the web tension and the roller gravity.The results show that when the roller wall thickness is constant,the deflection of the roller is increased with an increase in the web tension and when the web tension is constant,the deflection of the roller is decreased with an increase in the roller shoulder length.The longer the roller shoulder length is,the more slowly the deflection of the roller increases with an increase in the web tension.The model of the bending deformation is verified by the ANSYS simulation.