驱动系统参数对胶液喷射分配的影响

驱动系统是胶液喷射器的重要组成部分,对喷射器喷出的胶液体积及其速度有重要的影响.文中建立了胶液累积体积及其动能等效速度的离散化计算公式,结合计算机数值仿真得到的喷嘴出口中心速度,利用matlab程序计算不同驱动系统参数影响的胶液累积体积及其动能等效速度,为喷射器驱动系统设计及使用调整提供了一定的基础.计算结果较好地反映出胶液累积体积及其动能等效速度变化特征,喷针行程对喷射布胶的影响没有其加速度明显.

The Influence of Actuator Parameters on Fluid Jetting Dispensing

The actuator is an important component of the fluid jet -dispenser, and has an important influence on the fluid volume and velocity of the fluid jetted from the jet - dispenser. The calculation formula of cumulative fluid volume and its equivalent velocity based on fluid kinetic energy are deduced through central velocity at the nozzle outlet from the numerical simulation result, then cumulative fluid volume and equivalent velocity are computed under the condition of different actuator parameters by MATLAB program. This research supplies some foundation for the design and operation adjustment of the actuator. The results show a good changeing characteristic of the cumulative fluid volume and equivalent velocity, the stroke of the ball - needle compared with its acceleration has less influence on the jetting fluid dispensing.