送纸机构纸张控制方程及卡纸现象数值分析

发布时间：2018-07-14 11:52

【摘要】：卡纸现象是打印机和复印机送纸机构常见故障之一,广泛存在于各种介质的传送系统中.为解决该问题,需要研究纸张在送纸机构中的运行规律和受力特点.根据送纸机构的原理,建立纸张在辊轮间运动的计算模型,并推导这一过程中的纸张运动方程.理论推导表明机构的材料与尺寸对卡纸有影响;同时,利用多体动力学分析软件Recur Dyn,建立送纸机构仿真分析模型,研究送纸机构运行状态并分析在纸张脱离辊轮后各个因素对卡纸现象的影响,获得纸张与导板间不同的摩擦系数、主动辊轮转速、纸张模量及厚度变化对机构运动影响的规律;最后对比了实验与仿真的扭矩结果,来验证仿真方法的可靠性.结果表明,在纸张被辊轮夹持阶段,纸张运动主要受机构材料和尺寸影响;在纸张脱离辊轮后,纸张运动主要受摩擦力和接触力的影响,并发现随着纸张与导板间摩擦系数的增加、辊轮转速的减小、纸张模量及厚度的变大,机构中容易发生卡纸现象.研究结果可为解决卡纸故障提供指导.
[Abstract]:The phenomenon of paper jam is one of the common faults of printer and paper feeding mechanism of photocopier, which is widely used in the transmission system of various media. In order to solve this problem, it is necessary to study the running law and mechanical characteristics of paper in paper feeding mechanism. According to the principle of paper feeding mechanism, the paper motion model between rollers is established, and the paper motion equation is deduced. The theoretical derivation shows that the material and size of the mechanism have influence on the paper jam, and at the same time, the simulation analysis model of the paper feeding mechanism is established by using the multi-body dynamics analysis software Recur Dynr. The paper studies the running state of the paper feeding mechanism and analyzes the influence of various factors on the paper jam phenomenon after the paper is separated from the roller wheel. The different friction coefficient between the paper and the guide plate, the rotational speed of the active roller wheel, the change of the paper modulus and thickness on the movement of the mechanism are obtained. Finally, the experimental and simulation torque results are compared to verify the reliability of the simulation method. The results show that the paper motion is mainly affected by the material and size of the mechanism during the clamping stage of the paper by the roller wheel, and the paper motion is mainly affected by the friction and contact force after the paper is separated from the roller wheel. It is found that with the increase of the friction coefficient between the paper and the guide plate, the decrease of the rotational speed of the roller wheel and the increase of the paper modulus and thickness, the paper jam is easy to occur in the mechanism. The results can provide guidance for solving the problems of paper jam.
【作者单位】：同济大学航空航天与力学学院;同济大学机械与能源工程学院;
【分类号】：TS951.47;TP334.8

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