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Advances in Materials Science and Engineering
Volume 2017 (2017), Article ID 2095137, 12 pages
https://doi.org/10.1155/2017/2095137
Research Article

Design and Analysis of Fused Deposition Modeling 3D Printer Nozzle for Color Mixing

1College of Transportation, Shandong University of Science and Technology, Qingdao 266590, China
2College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China

Correspondence should be addressed to Qingliang Zeng; moc.361@gnezlq

Received 24 May 2017; Revised 22 June 2017; Accepted 2 July 2017; Published 13 August 2017

Academic Editor: Gianluca Percoco

Copyright © 2017 Shanling Han et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Fused deposition modeling (FDM) has been one of the most widely used rapid prototyping (RP) technologies leading to the increase in market attention. Obviously it is desirable to print 3D objects; however, existing FDM printers are restricted to printing only monochrome objects because of the entry-level nozzle structure, and literature on the topic is also sparse. In this paper, the CAD model of the nozzle is established first by UG (Unigraphics NX) software to show the structure of fused deposition modeling 3D printer nozzle for color mixing. Second, the flow channel model of the nozzle is extracted and simplified. Then, the CAD and finite element model are established by UG and ICEM CFD software, respectively, to prepare for the simulation. The flow field is simulated by Fluent software. The nozzle’s suitable temperature at different extrusion speeds is obtained, and the reason for the blockage at the intersection of the heating block is revealed. Finally, test verification of the nozzle is performed, which can produce mixed-color artifacts stably.