Multi nozzle system based on MAM and PAM for multimaterial dispensing
CHEN Peng hua, ZHANG Xiang lin, CHEN Zhi chao, LI Wen chao, SHI Lei, ZHOU Kui
(School of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China)

Abstract: Aiming at solving the printing problem of multi component model in biological tissue engineering, the MAM system, the PAM system, the path planning for multi material model and the coordinated control of multi nozzle were investigated. A multi nozzle 3D printing system based on MAM and PAM was proposed. A method was presented to cooperatively control multi nozzle. The PAM system was optimized to improve printing accuracy, and the path planning was improved to meet multi material printing. Finally, the feasibility of the system was verified by printing multi material model. The results indicate that the multi nozzle 3D printing system can print the complex multi material model by improving the path planning method, which realize the coordination control of multi nozzle, and the printing accuracy of MAM and PAM satisfy requirements of the tissue engineering. At last, the system lays the good foundation for printing highly bionic structure.

Key words: multi nozzle; motor assisted microsyringe (MAM); pressure assisted microsyringe (PAM); 3D printing