基于柔性材料的双喷头3D打印技术研究

Research on 3D Printing Technology of Double Sprinkler Based on Flexible Materials

针对生物凝胶、硅橡胶等柔性材料复杂形状成型困难的问题,提出一种双喷头3D打印方法,实现模具和柔性材料的一体化成型。在深入研究FDM 3D打印原理的基础上,将FDM 3D打印机装置进行改装,设计了一套可以打印两种不同材料的双喷头3D打印装置。其中一个喷头打印PLA等工程塑料,用作支撑和模具;另一个喷头用来打印硅橡胶、生物凝胶等具有流动性和黏性的柔性材料。试验结果表明:该双喷头3D打印装置打印硅橡胶、生物凝胶等柔性材料,能够较好地完成模具和材料一体化成型的打印任务,为生物凝胶、硅橡胶等柔性材料的成型工艺提供了有效的方法。

In view of the difficulties in complex shape forming of flexible materials such as bio gel and silicone rubber,a double-nozzle 3D printing method is proposed to realize the integration of mould and flexible material.On the basis of the deep study of the principle of FDM 3D printing,the FDM 3D printer device is modified and a set of double-nozzle 3D printing device which can print two different materials is designed.One of the nozzles prints engineering plastics such as PLA for use as supports and molds,the other one nozzle is used to print silicone rubber,biogel and other flexible materials which have fluidity and viscosity.The experimental results show that the dual-nozzle 3D printing device designed in this paper can successfully complete the printing task of integrated molding of mold and material when printing flexible materials such as silicone rubber and biogel and provides an effective method for the forming process of the flexible materials such as biopolymer and silicone rubber.