机械科学与技术2023，Vol.42Issue(12)：2047-2054,8.DOI:10.13433/j.cnki.1003-8728.20220164
多材料微流挤出3D打印喷头优化设计
Optimization Design of Nozzle in 3D Printing of Multi-material Micro-flow Extrusion
摘要
Abstract
In order to meet the requirements of continuous multi-material printing and uniform mixing of ceramic 3D printer by micro-flow extrusion,a new structure of extrusion mixing for 3D printer with variable inner diameter screw was designed.It can not only realize one-way transportation of slurry with high solid content inside the nozzle,at the same time,the two materials were mixed evenly by rotating and stirring the screw with variable inner diameter.Through Ansys response surface optimization,the objective function is to achieve the maximum area weighted average velocity at the extrusion head with the minimum pressure.The matching different extrusion speed under different demand of low power consumption and high outputis carried out.In the screw section,the optimum maximum shear rate was taken as the objective function to achieve the uniform mixing of the two ceramic pastes.The results show that the high precision printing with different small flow rates and the uniform mixing of the two materials can be realized under the requirements of low rotation speed and miniaturization of the screw.关键词
3D打印/变径螺杆挤出/多材料陶瓷打印/响应面优化/参数化设计Key words
3D printing/variable diameter screw extrusion/multi-material ceramic printing/response surface optimization/parameterized design分类
计算机与自动化引用本文复制引用
周婧,李迪,平学成,段国林..多材料微流挤出3D打印喷头优化设计[J].机械科学与技术,2023,42(12):2047-2054,8.基金项目
天津市自然科学基金项目(18JCQNJC75100)与天津市科技计划项目(18ZXRHGX0020) （18JCQNJC75100）
