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以提高造型精度、减小凝聚单元体的尺寸为目的 ,分析了喷射过程的影响因素。论述了喷头的工作原理 ,并对喷头的设计进行了量化研究。针对液体在颗粒空隙中渗透的非稳态过程进行了数学分析与建模 ,研究了射流的结构和速度分布 ,给出了射流飞行的最优距离。对喷射过程中的滞后现象进行了详细分析 ,解决了喷头启闭控制与扫描运动的匹配问题 ,提高了平面内扫描喷射的几何准确性。
In order to improve the precision of molding and reduce the size of the unit, the influencing factors of injection process are analyzed. Discussed the working principle of the nozzle, and made a quantitative research on the nozzle design. Mathematical analysis and modeling of the unsteady process of liquid penetrating into the void are studied. The structure and velocity distribution of the jet are studied, and the optimal distance of the jet is given. The hysteresis phenomenon in the injection process was analyzed in detail, which solved the matching problem between the nozzle opening and closing control and the scanning movement, and improved the geometrical accuracy of in-plane scanning and jetting.