Device for realizing 3D metal printing by virtue of supporting structure

Abstract

The invention relates to a device for realizing 3D metal printing by virtue of a supporting structure. The device comprises a translation stage capable of moving along the X-axis, the Y-axis and the Z-axis. Heating resistance wires and a thermocouple are arranged on a base plate of the translation stage. The heating resistance wires are used for preheating the base plate, so as to enable metal droplet layers to be tightly overlapped. The thermocouple is used for realizing the measurement and the feedback control of a temperature. An electromagnetic induction heating copper pipe and a cooling water pipe are arranged outside a graphite crucible, metallic raw materials are enabled to be molten to form molten metal, the bottom of the graphite crucible is connected with a metal printing spray nozzle, a protective gas is inputted from a gas inlet pipe at the top of the graphite crucible, and under the pulse pressure, molten metal forms regular metal droplets to drip to the base plate of the translation stage. The 3D metal droplet printing is realized through the cooperation with the movement of the translation stage. A supporting material spray nozzle is adjacent to the metal printing spray nozzle. A uniform mixture of gypsum and photosensitive resin is extruded stably under the constant pressure inputted by the gas inlet pipe so as to print the supporting part of a part. The switching between metal and the supporting material is automatically recognized and controlled by a control system. The 3D metal printing device is reasonable, high in operability, high in degree of automation, high in production efficiency, and suitable for being widely popularized, and ensures the molding quality.

Description

technical field [0001] The invention relates to the technical field of rapid prototyping, in particular to a metal 3D printing plus support structure device. Background technique [0002] The known 3D printing technology is to use a 3D printer to heat and melt the applied printing material in the printing nozzle through a heater, and then inject the molten material through a certain driving device, so as to realize the rapid deposition and molding of the material. Since the material to be printed needs to be able to be melted by instantaneous heating, deposited instantaneously, and combined with the substrate as a whole, it is impossible for high melting point metals to achieve three-dimensional rapid prototyping under the current heating spray method. [0003] The raw materials used for 3D printing are special and must be able to liquefy and silken. Powdered, and can be recombined after printing, the material process requirements are extremely high. At present, most of th...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing 3D printing technology cannot realize the three-dimensional rapid prototyping of complex parts of high melting point metals, and to provide a 3D printing device for metal droplets with support materials

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