点胶微通道结构参数对胶体挤出过程影响规律研究

Research on Influence of Micro-Channel Structure Parameters for Glue Soluting Dispensing Process

针对现有研究微量点胶过程中忽略了微通道的入口形状、长度及出口内径结构参数对点胶质量影响的状况,建立了含上述微通道结构参数的微点胶过程模型,通过数值仿真研究了微通道入口收缩角、长度、出口内径对胶体微挤出过程的影响规律.结果表明,这些微通道结构参数的变化会显著地影响胶体通过微通道时的压力、流速,进而影响到周期点胶量.

For the problem that micro-channel structure parameters have important effects on micro-dispensing process is often ignored, the micro-dispensing process model including micro-channel structure parameters has been established. The influence law of the entrance contraction angle, the length of the micro-channel and the outlet inner diameter for micro-dispensing process were also studied by numerical simulation. The results show that the structure parameters changes will significantly affect the pressure and the flow velocity when the glue soluting through the micro-channel and then affect the cycle dispensing quality.