Simulating Analysis on the Dynamic Behavior of a Paper Exiting the Rollers of Paper Feeding Mechanism

• Main Authors: Chuan-I Wu, 吳俊逸
• Other Authors: Ching-Kong Chen
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/3n4684

碩士 === 國立臺北科技大學 === 精密機構設計產業研發碩士專班 === 95 === Nowadays, the development of printers has been toward fast printing, high resolution and high precision. Two important factors that dominate the consumer’s decision on purchasing are printing quality and printing speed. The performance of paper feeding mechanism has direct influence to these two factors. The dynamic behavior of paper in the paper feeding mechanism is very important and critical; therefore, it is worth to do a further research on the paper behavior. The purpose of this research is to investigate the behavior of paper exiting from different ways of channels, especially from rollers. The study employs dynamic simulation software---LS-DYNA to perform simulation analysis. Firstly, let paper to exit from an open plate with a constant velocity to verify the results of the literature. It confirms the accuracy of the software. Then, we simulate the paper exiting from a pair of rollers, and from a plate with a roller. Parts of these results are compared with the results of the experiments. We found that (1) The faster the paper exits the rollers, the shorter the front edge of the paper drops; (2) The lager the normal forces the rollers apply, the shorter the front edge of the paper drops, however, the influence of normal force is less than that of the exiting speed of the paper; (3) The larger the roller’s radius is, the shorter the front edge of the paper drops. Finally, we derive the relations between the roller’s size, the rotational speed of the roller and geometrical positions of the rollers in accordance the results of the simulations. We hope the results could be helpful to promote the design of paper feeding mechanism in the aspects of speed and quality during design stage.