Powder screening device of metal 3D printing equipment

Abstract

The powder screening device of the metal 3D printing equipment comprises a powder feeding box, a powder screening assembly and a closing assembly, the powder screening assembly is mounted on an opening in the upper end of the powder feeding box and comprises a mounting ring, a screen, a fixing ring and a vibration assembly, the mounting ring is connected into the opening in the upper end of the powder feeding box, and a positioning groove I is formed in the upper end face of the mounting ring; the screen comprises a screen hopper and a side ring connected to the periphery of the screen hopper, the screen is mounted on the mounting ring, the bottom end of the side ring is positioned in a positioning groove I of the mounting ring, a body of the fixing ring is provided with a positioning groove II formed by sinking from bottom to top, the fixing ring is mounted on the upper side of the side ring of the screen, and the positioning groove II of the fixing ring is clamped with the side wall of the upper end of the side ring. The vibration assemblies are connected to the two opposite sides of the screen, the closing assembly is connected to the fixing ring, and the middle of the upper side of the closing assembly is further connected with a material guide plate. The screen can be detached and replaced conveniently, cleaning of impurities in the screen is avoided, and the screening efficiency is guaranteed.

Description

technical field [0001] The invention relates to the technical field of metal printing, in particular to a powder sieving device for metal 3D printing equipment. Background technique [0002] 3D printing is a kind of rapid prototyping technology, also known as additive manufacturing. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. , 3D printing technology can even form parts with complex shapes, with high forming precision and material saving, etc. The materials are mainly powder materials, and the forming powder in the printing field can be recycled, which is a green manufacturing technology that saves materials. However, some impurities will be produced during the manufacturing process, and these impurities will adversely affect the subsequent printing and molding products, making the molding quality worse. Traditional sieve powders are mostly filtered through sim...

AI Technical Summary

Problems solved by technology

However, some impurities will be produced during the manufacturing process, and these impurities will adversely affect the subsequent printing and molding products, making the molding quality worse. Most of the traditional sieve powder is filtered through a simple filter.

[0003] However, most of the filter screens of current powder sifting devices are fixed. During the use of powder sieving, when it is necessary to clean up the screened impurities, it is inconvenient to disassemble the filter screen, resulting in the accumulation of impurities and reducing the Efficiency and effectiveness of sifting powder

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