具有电磁阀微喷功能的3D打印机构建及应用  

Construction and Application of 3D Printer with Solenoid Valve Micro-jet Function

作　　者：桑胜波[1] 申治中 周传刚 孙蕾[1] 权龙[3] SANG Shengbo;SHEN Zhizhong;ZHOU Chuangang;SUN Lei;QUAN Long(Shanxi Key Laboratory of Micro Nano Sensors&Artificial Intelligence Perception,Taiyuan University of Technology,Taiyuan 030024;Shanxi Institute of 6D Artificial Intelligence Biomedical Science,Taiyuan 030031;College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024)

机构地区：[1]太原理工大学微纳传感与人工智能感知山西省重点实验室,太原030024 [2]山西省六维人工智能生物医学研究院,太原030031 [3]太原理工大学机械与运载学院,太原030024

出　　处：《机械工程学报》2022年第23期262-270,共9页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51975400,61703298);国家重点研究发展计划(2019YFB1310200);山西省优秀人才创新科技计划(201805D211020)资助项目。

摘　　要：3D打印技术已经在生物医学、传感器制造等领域得到广泛应用。然而,传统3D打印机由于自身工作方式的不同,适用范围不同,难以同时兼容生物制备和传感器制备。因此,以电磁阀作为3D打印机的喷头,自主设计并构建具有独特工作方式的3D打印机,将高精度液滴分配方式应用于3D结构打印。研究料筒气压、电磁阀开关时间、喷头高度对打印液滴直径的影响,并对点、线、网、面图案的打印质量进行评估;利用所构建的打印机制备具有真皮乳头结构的组织工程皮肤和阵列式柔性压力传感器,测试组织工程皮肤的细胞活性及压力传感器的压-阻转换特性。结果表明,打印液滴直径尺寸与料筒气压、喷头开启时间、喷头高度均成正相关;3D打印机对点、线、网、面图案的打印效果较为理想;可成功应用于具有真皮乳头结构的组织工程皮肤和柔性压力传感器的制备。所构建的3D打印机融合喷墨式打印机和挤出式打印机的优势,对打印墨水有较好的兼容性,具有打印方式简单、打印速度快、成型质量高的优点,对组织工程皮肤及柔性压力传感器的研究具有重要意义,为实现具有感知功能仿生皮肤的制备奠定基础。3D printing technology has been widely used in biomedicine, sensor manufacture and other fields. However, traditional 3D printers have a different application range due to their distinct working modes. It is difficult to be compatible with biological preparation and sensor preparation at the same time. Therefore, using the solenoid valve as the nozzle, a 3D printer with a unique working mode is independently designed and constructed, and the high-precision droplet distribution mode is applied to the printing of 3D structures.The effects of cylinder pressure, solenoid valve switching time and nozzle height on the print droplet diameter are studied, and the print quality of point, line, net and surface patterns is evaluated. The tissue-engineered skin with dermal papilla structure and an array flexible pressure sensor are prepared by the printer, and the cell activity of the tissue-engineered skin and the pressure-resistance conversion characteristics of the pressure sensor are tested. The results show that the diameter of droplets is positively correlated with cylinder pressure,nozzle opening time and nozzle height. The printing effect of 3D printer on point, line, net and surface patterns is ideal. It can be applied to the preparation of tissue-engineered skin with dermal papilla and flexible pressure sensor, respectively. The 3D printer combines the advantages of inkjet printer and extrusion printer, has good compatibility with printing ink, has the advantages of simple printing mode, fast printing speed and high forming quality, is of great significance to the research of tissue-engineered skin and flexible pressure sensor, and lays a foundation for the preparation of bionic skin with sensing function.

关 键 词：3D打印机 电磁阀喷头 组织工程皮肤 柔性压力传感器 

分 类 号：TS853[轻工技术与工程]