Metal powder screening device of 3D printer

Abstract

The invention discloses a metal powder screening device of a 3D printer, which comprises a containing assembly, a screening assembly, a pressure stabilizing assembly and a material receiving assembly.The containing assembly comprises a supporting frame, a screening tank, two sets of feeding pipes, a discharging pipe and a plurality of slag discharging pipes. The screening assembly comprises a supporting block, a screening motor, a plurality of conical screening nets, a motor protective cover and a plurality of material stirring rods. The pressure stabilizing assembly comprises a draught fan,a filter net, an air suction pipe, an exhaust pipe and an exhaust branch pipe. The material receiving assembly comprises a plurality of slag storage boxes and material storage boxes. Screening space is provided through the containing assembly; multi-stage screening of the metal powder is achieved through the screening assembly; metal powder can be screened into metal powder with different particlesizes and classified, subsequent recycling is facilitated, the interior of the screening tank is sucked through the pressure stabilizing assembly, the screening tank is kept in a micro-negative-pressure environment, the metal powder can fall into the discharging pipe conveniently, the metal powder is prevented from drifting out of the screening tank, and the screening environment is maintained.

Description

technical field [0001] The invention relates to the technical field of 3D printing metal powder screening, in particular to a 3D printer metal powder screening device. Background technique [0002] With the development of 3D printing technology, 3D printing can significantly shorten the manufacturing cycle of complex structural parts, and has shown good application prospects in aerospace and other fields. In the process of applying 3D printing technology to produce products, the preparation of metal powder is the most important The key link, at present, mainly includes crucible heating, electrode induction heating and plasma heating for heating, and the powder making operation is carried out after heating. [0003] After the powder making is completed, it is generally necessary to screen the prepared metal powder to remove the part of the metal powder that does not meet the particle size requirements, so as to ensure that it can achieve a good material delivery process durin...

AI Technical Summary

Problems solved by technology

[0004] At present, the screening of metal powder generally uses the vibrating screen motor to drive the vibrating screen to vibrate. The metal powder that meets the particle size requirements passes through the middle of the filter screen, and the metal powder that does not meet the particle size requirements stays on the upper part of the screen. After a period of time, the metal powder that does not meet the particle size requirements gradually increases. Generally, the machine stops and manually takes out the metal powder that does not meet the quality requirements.

[0005] Although the above-mentioned method can realize the screening of metal powder, it is not conducive to use because it needs to manually remove the metal powder that does not meet the requirements, and during the operation of the equipment, the metal powder generally only passes through the sieving net by its own weight , which causes the metal powder to overflow the sieving tank during the sieving process, which will easily cause the surrounding environment to be fouled

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