Jet dispenser is widely used in microelectronic packaging, semiconductor industry, life science, and rapid manufacturing fields. As the requirement for dispensing accuracy and speed become higher and higher, especially for viscous materials, the traditional mechanisms cannot meet the high precision dispensing. This paper presents a new jetting dispenser using the complaint mechanism with amplifier components to design the dispenser, which gain the motion and force from the elastic deformation of flexible hinges. To describe the mechanical property of the jetting dispenser, the model of the jetting dispenser was built by employing a pseudo-rigid-body method. To predict accurately droplet volume, we established the model by describing the forming process of droplet. Furthermore, the errors of the droplet volume were analyzed based on the model. The prototype of the dispenser was built and the effects of driving voltage, radius of spray chamber, glue supply pressure, glue viscosity, and turn-on time of hammer on the droplet were analyzed experimentally. The analytical results are in good agreement with experimental results, which the advantages of the presented jetting dispenser with a new design concept are validated. This research provided a new idea and modeling method for the future application of the dispensing system.

喷射点胶机广泛应用于微电子封装、半导体工业、生命科学、快速制造等领域。随着对点胶精度和速度的要求越来越高，特别是对于粘性材料，传统的机构已经不能满足高精度点胶。本文提出了一种新型喷射点胶机，采用带有放大器组件的顺应机构来设计点胶机，该点胶机通过柔性铰链的弹性变形获得运动和力。为了描述喷射点胶机的力学性能，采用伪刚体方法建立了喷射点胶机模型。为了准确预测液滴体积，我们通过描述液滴的形成过程建立了模型。此外，基于该模型对液滴体积的误差进行了分析。搭建了点胶机样机，实验分析了驱动电压、雾化室半径、供胶压力、胶水粘度、击锤开启时间等因素对液滴的影响。分析结果与实验结果吻合良好，验证了采用新设计理念的喷射点胶机的优势。该研究为点胶系统的未来应用提供了新的思路和建模方法。