基于半球壳式导流体无阀微型压电泵的3D打印机挤出机构设计  

Design of the 3D printer’s extrusion mechanism based on the hemisphereshell fluid-guiding valveless miniature piezoelectric pump

作　　者：张自强 刘夏 陈延伟 许晟铭 马铭阳 孙萱 ZHANG Zi-qiang;LIU Xia;CHEN Yan-wei;XU Sheng-ming;MA Ming-yang;SUN Xuan(Engineering Training Center,Changchun University of Technology,Changchun 130012;School of Mechanical and Vehicle Engineering,Changchun University,Changchun 130022)

机构地区：[1]长春工业大学工程训练中心,吉林长春130012 [2]长春大学机械与车辆工程学院,吉林长春130022

出　　处：《机械设计》2021年第7期48-55,共8页Journal of Machine Design

基　　金：吉林省教育厅“十三五”科学技术项目(JJKH20191302KJ)。

摘　　要：在研究3D打印机工作机理的基础上,针对现有3D打印机挤出机构存在的断丝或流涎方面的问题及研究现状进行深入分析,文中提出一种新型3D打印机挤出机构,设计基于半球壳式导流体无阀微型压电泵为挤出机构固态丝材回抽过程引起的喷嘴空缺提供熔融态丝材的微补给,建立基于导流体无阀微型压电泵的3D打印机挤出机构三维实体模型。解决了目前3D打印机挤出机构出现的断丝或流涎方面的问题,为基于FDM技术的3D打印机提高打印质量提供一种有效的解决方案。In this article,based on the research of the working mechanism of 3D printers,the in-depth analysis is conducted on the problems of broken wires or drooling in the extrusion mechanism of 3D printers. A new 3D printer’s extrusion mechanism is developed. The hemisphere-shell fluid-guiding valveless miniature piezoelectric pump ensures the micro-supply of molten wire for the nozzle vacancy caused by the solid-wire drawing process of the extrusion mechanism. Then,the three-dimensional solid model of the 3D printer’s extrusion mechanism is set up based on the fluid-guiding valveless miniature piezoelectric pump. It solves the current problems of broken wires or drooling in the extrusion mechanism of 3D printers,and provides an effective solution for improving the quality 3D printing based on the FDM technology.

关 键 词：无阀压电泵 3D打印机 挤出机构 半球壳式 

分 类 号：TH122[机械工程—机械设计及理论]