用于喷墨打印的压电喷嘴研制及机理探究

Development of Piezoelectric Nozzle for Inkjet Printing Technology and Its Mechanism Investigation

针对国内用于喷墨打印的喷头制作工艺不成熟、国外喷头价格昂贵且难以满足特定需求的问题,对不同的应用场景开发了不同的玻璃喷嘴制作工艺,设计一种由压电陶瓷管驱动的微滴喷射装置,并通过系统试验探索了不同驱动电压、工作频率和喷头尺寸下的液滴喷射情况,总结了电元件驱动的液滴喷射机理。结果表明:驱动电压增大时,液滴的喷射速度和尺寸大小也随之增大,喷头的整体长度也会影响喷头的最佳工作基频。此研究在一定程度上能降低对进口喷头的依赖,促进国内喷墨打印技术的整体提升。

Aiming at the problems of immature manufacturing technology of domestic nozzle for inkjet printing,high price of foreign nozzle and difficulty to meet specific needs,different manufacturing technologies of glass nozzle were developed for different application scenarios and a micro droplet injection device driven by piezoelectric ceramic tube was designed.The droplet injection conditions under different driving voltage,working frequency and nozzle size were explored through systematic experiments,and the mechanism of droplet injection driven by electric components was summarized.The results showed that when the driving voltage increases,the spray speed and size of droplets also increases,and the overall length of the nozzle will also affects the optimal working fundamental frequency of the nozzle.This study can reduce the dependence on imported nozzles to a certain extent and promote the overall improvement of domestic inkjet printing technology.