Injection Molding of a Micro-nozzle Plate

• Main Authors: Yuan-Syun Tsai, 蔡元勛
• Other Authors: Min-Wen Wang
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/71585820335152598779

碩士 === 國立高雄應用科技大學 === 機械與精密工程研究所 === 95 === Micro-nozzle plate is a key component of inject printing device, its quality directly affects the quality of the resolution and the spurt quality of an inkjet printing device. In this study, an innovation micro-nozzle plate fabrication has been proposed and realized using LIGA-like and micro-injection molding technologies. Compared with current industry fabrication processes, this new fabrication process has the advantage on low cost and mass replication. In this study, the mold insert with of the mico-nozzle plate was fabricated through Laser-LIGA process, both core pins and microchannels of the nozzle plate were integrated and fabricated at the same time. In order to get balance filling of the mold, the mold was designed using Moldex3D commercial software, initial processing window was obatined through filling analysis. Taguchi method was implemented in this study to obatin the best processing parameters for this micromolding process. Inside the processing window, it was found that mold temperature and cooling time have more impact on the quality of the mirco-nozzle plate, while other parameters did not have too much effect on the part quality when they are inside the processing window. As the result shows that, this study has proposed an innovative fabrication method for molding a high resolution and low cost micro-nozzle plate, and a good quality of micro-nozzle was sucessfully molded in this study.