Automatic powder collecting and feeding system for metal powder 3D printing and printing method

Abstract

The invention belongs to the technical field of advanced additive manufacturing, and relates to an automatic powder receiving and feeding system for metal 3D printing and a printing method.The system comprises a printer printing cavity, a printer stock bin is arranged at the top of the printer printing cavity and connected with a powder cylinder through a powder feeding pipeline, and a waste powder cylinder is arranged at the bottom of the printer stock bin; the interior of the waste powder cylinder is used for receiving waste metal powder scraped from the interior of a printer stock bin, and the waste powder cylinder is connected with the powder cylinder through a waste powder pipeline and used for guiding the waste powder into the powder cylinder. According to the invention, automatic recovery treatment and reutilization of waste powder and automatic powder receiving and feeding printing functions in the printing process can be realized, the manual operation is greatly reduced, and the printing efficiency of the printer is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of advanced additive manufacturing, and more specifically relates to an automatic powder feeding system and printing method for metal 3D printing. Background technique [0002] The basic principle of SLM (selective laser melting, selective laser melting) technology is: first use pro / e (Pro / Engineer, a kind of mechanical automation software), UG (CAD CAM CAE, interactive CAD / CAE system) on the computer , CATIA (ComputerAidedThree-dimensionalInteractiveApplication interactive CAD / CAE / CAM system) and other three-dimensional modeling software to design the three-dimensional solid model of the part, and then slice and layer the three-dimensional solid model through the slicing software to obtain the contour data of each section. Generate a filling scanning path, the equipment will follow the filling scanning path, control the laser beam to selectively melt the metal powder materials of each layer, and gradually s...

AI Technical Summary

Problems solved by technology

[0004] SLM technology is currently widely used in the field of additive manufacturing of metal powder materials, among which powder feeding technology is a key technology to realize metal powder additive manufacturing, which greatly affects the cost and molding efficiency of the entire additive manufacturing process. After the parts are processed, the unformed metal powder will be oxidized by the air after the processing chamber is opened, and the oxidized metal powder will be discarded as waste, resulting in a great waste of resources

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