Three-dimensional printer, molding method of three-dimensional printer, and metal three-dimensional object

Abstract

The invention provides a metal three-dimensional object, a three-dimensional printer and a molding method of the three-dimensional printer. The three-dimensional printer comprises a printing head component, a printing platform and a sinter-molding chamber; the printing head component comprises a metal wire material supply passage, a metal powder supply passage and at least one printing nozzle; themetal wire material supply passage communicates with one printing nozzle; the metal powder supply passage communicates with one printing nozzle; the metal wire material supply passage is used for supplying a metal-wire-like first printing material; the metal powder passage is used for supplying a second printing material which at least contains metal powder; the printing head component is used for extruding out the first printing material and the second printing material; the printing platform is used for bearing primarily-solidified objects formed by the first printing material and the second printing material which are extruded out by the printing head component; each primarily-solidified object comprises at least one molded layer; and each molded layer comprises an outer layer and an inner layer. The metal three-dimensional object molded by the three-dimensional printer is compact, high in strength and also good in mechanical properties.

Description

technical field [0001] The present invention relates to the technical field of three-dimensional printing, and in particular, relates to a three-dimensional printer, a forming method of the three-dimensional printer and a metal three-dimensional object produced by the method. Background technique [0002] Three-dimensional (3D) rapid prototyping, also known as additive manufacturing, is based on the principle of producing three-dimensional objects by printing or laying down successive layers of material. A 3D rapid prototyping device, or 3D printer, works by converting a 3D computer model of an object and producing a series of cross-sectional slices, which are then printed, one on top of the other, to produce the final 3D object. [0003] The main types of three-dimensional rapid prototyping methods are: stereolithography or photocuring (Stereolithography, SLA), layered object manufacturing (Laminated object manufacturing, LOM), selective laser melting (Selective laser Melti...

AI Technical Summary

Problems solved by technology

However, the laser sintering method requires a lot of energy to make the powder form after melting at high temperature, and this 3D printing equipment requires very professional maintenance, which consumes a lot of cost

For example, a Chinese invention patent application with the application number 201420377082.7 discloses a metal powder laser sintering three-dimensional printer, which completes the powder coating work on the printing platform through the powder coating roller, and then performs selective laser sintering. Not only is the efficiency of powder spreading work not high, but also the process of laser sintering consumes a lot of energy and also reduces work efficiency

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