中文摘要：

为了实现对高粘性微量液滴的高效率喷射，研制了一种基于撞针原理的非接触式微喷装置。采用压电陶瓷作为驱动装置，再利用菱形放大机构进行微位移放大，采用有限元软件对菱形放大机构进行静、动态特性分析，确定喷针和喷嘴的配合形式及相关尺寸，然后利用MATLAB软件进行动力学方程的求解，仿真结果显示，喷针的位移和速度均满足喷射条件，最后针对5～10Pa·s粘度的液体进行了微喷实验。实验结果表明：该微喷装置可稳定地实现胶液的喷射，输出流量随着驱动电压的增大而增大。

英文摘要：

In order to realize high efficiency of dispensing for high viscosity adhesive. A non-contact jetting device based on firing pin principle is successfully developed. It ~s driven by a piezostack,the output displacement of which is magnified by a diamond amplification mechanism. Finite element analysis （FEA） is used to analyze the structure and the dynamic performance of the amplification mechanism. Then the fit forms between nozzle and needle is fixed after comparison and the correlative dimension is also given. MATLAB is used to solve the founded dynamic equation including piezostack, needle and amplification mechanism. The simulation results show that both the dis- placement and velocity of the needle meet the requirement of dispensing. In the end the experiment for jetting adhe- sive （viscosity of 5 Pa·s to10 Pa· s） is performed. The experimental results indicate that the jetting device can dis Dense the adhesive steadily. The average dispensing velocity become large with the voltage amplitude.