基于弹性流体动力润滑的胶印机输墨系统油墨传输特性研究  

Study on Ink Transfer Characteristics Based on Elastohydrodynamically Lubricated Theory

作　　者：王毅[1,2] 刘凯[1] 张海燕[2] 路菲[2] 

机构地区：[1]西安理工大学机械与精密仪器学院,西安710048 [2]西安理工大学陕西省印刷包装工程重点实验室,西安710048

出　　处：《机械科学与技术》2014年第8期1145-1149,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(51275406)资助

摘　　要：为了精确了解输墨系统油墨传输特性,根据胶印机输墨系统的弹性流体动力润滑理论,建立了输墨系统墨辊间隙最小油膜厚度方程,得出给定参数下墨辊间隙的最小油膜厚度,并通过仿真计算分析了墨辊尺寸、接触压力和速度对墨辊间隙所能通过最小膜厚的影响。仿真结果表明:输墨系统墨辊接触压力增大,最小油墨墨层厚度值减小;输墨系统墨辊转速对油墨墨层厚度影响很大,直接影响输墨稳定时间;随着印刷速度增高,承印物表面接受墨层厚度值增大,输墨稳定的时间变长。In order to accurately understand the ink transfer characteristic of the inking system, based on elastohydrodynamically lubricated theory of inking system, the equation of the minimum film thickness between rollers in inking system is established, and the minimum film thickness is obtained by solving the equation under given parameter. The simulation results of inking system indicate that the rollers＇ sizes, contact pressure and entrainment speed have an impact on the minimum film thickness. The results also show that： with the increasing of contact pressure of ink roller of inking system, the minimum film thickness will be decreased; the rotating rate of ink roller of inking system has a great impact on the ink thickness and the time to reach steady state; with the increasing of the printing speed, the layer thickness of the substrate surface increases quickly, and the time to reach steady state becomes long.

关 键 词：动力润滑 最小膜厚方程 油墨传输特性 仿真 

分 类 号：TS825[轻工技术与工程]