超声振动辅助的气动式3D打印喷头结构设计及其实验研究  

Structure design and experimental research of pneumatic 3D printer head assisted by ultrasonic vibration

作　　者：冶竣峰 郭明森[1] 邢晓红[3] 袁辉 吴伟 Ye Junfeng;Guo Mingsen;Xing Xiaohong;Yuan Hui;Wu Wei(The State Key Laboratory of Mechanics and Control of the Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Nantong Academy of Intelligent Sensing,Nantong 226007,China;Nanhang Jincheng College,Nanjing 211156,China)

机构地区：[1]南京航空航天大学机械结构力学及控制国家重点实验室,南京210016 [2]南通智能感知研究院,南通226007 [3]南京航空航天大学金城学院,南京211156

出　　处：《国外电子测量技术》2022年第1期70-75,共6页Foreign Electronic Measurement Technology

基　　金：江苏高校优势学科建设工程(PAPD);国家自然科学基金(51775273);装备预研航天科工联合基金(6141B07090119);国防基础科研基础研究与前沿技术计划(JCKY2018605C010)项目资助。

摘　　要：随着基于3D打印技术的再生医学概念被提出,生物3D打印技术得到了迅猛的发展。其核心思想是使用生物材料和细胞作为打印材料,通过使用3D打印技术在3D空间中构建类似组织的前体。但该技术目前仍然存在众多限制条件,如打印方式损伤性高、打印速度慢等。对此提出了超声振动辅助的打印方式,设计了气动式压电打印喷头。通过COMSOL Multiphysics有限元软件优化了集成压电换能器的3D打印机喷头结构,制备了一个打印头原型并进行测试,挤出测试结果表明,超声振动能够有效地提高挤出速度,从而达到提高打印速度的目的。As the concept of regenerative medicine based on 3 D printing technology is proposed,bio-3 D printing technology has developed rapidly.The core idea is to use biomaterials and cells as printing materials,and build a tissue-like precursor in 3 D space by using 3 D printing technology.However,this technology still has many limitations,such as high damage to the printing method and slow printing speed.This research proposes an ultrasonic vibration-assisted printing method,and designs a pneumatic piezoelectric printer head.The structure of the printer head is optimized by COMSOL Multiphysics finite element software,a printer head prototype is fabricated and tested.The extrusion test results show that ultrasonic vibration can effectively increase the extrusion speed,so as to achieve the purpose of increasing the printing speed.

关 键 词：3D打印喷头 压电换能器 振动辅助 有限元分析 

分 类 号：TB552[理学—物理] TH164[理学—声学]