Laser sintering equipment and its dust-proof mechanism

Abstract

The invention provides a dust-proof mechanism, which includes a dust-proof unit and a bearing plate. The dust-proof unit is respectively installed at the starting end and the limit position of the movement of the scraper arm. The dust-proof unit includes a column, an elastic member, a reel and a stop The column is connected to the bottom plate of the cavity, the elastic member and the reel are sleeved outside the column, and one end of the elastic member is connected to the column, and the other end of the elastic member Connected to the reel, the bar is wound on the reel, and one end of the bar is fixed on the reel, and the other end of the bar is connected to one end of the scraper arm side, the bearing plate is installed on the separator and is arranged below the strip gap, and the scraper arm is provided with a through hole, the bearing plate passes through the through hole, and the bearing plate and the The partition plate forms a bearing groove, one side of the retaining bar is provided with a brush block, and the brush block moves in the bearing groove with the movement of the retaining bar, and dust collecting boxes are arranged at both ends of the bearing plate .

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a laser sintering device and a dust-proof mechanism thereof. Background technique [0002] Additive manufacturing technology (CAdditive Manufacturing, referred to as AM) is an advanced manufacturing technology with distinctive features such as digital manufacturing, high flexibility and adaptability, direct CAD model drive, fast speed, and rich and diverse material types. It does not require any tooling and molds, so the application range is very wide. As one of the additive manufacturing technologies, the selective laser melting technology (CSelective Laser Melting, referred to as SLM) has also developed very rapidly in recent years. A layer of powder material is laid flat on the upper surface of the piston molded part, and the vibrating mirror controls the laser to scan the solid part of the powder layer according to the cross-sectional axis profile of the layer...

AI Technical Summary

Problems solved by technology

In order to isolate the working chamber and the guide rail, a partition and a horizontal plate are installed near the working chamber. However, since the movement of the scraper arm requires a certain space, the working chamber cannot be completely isolated from the guide rail. During the laser sintering process, dust, smoke and other impurities Because some of the airflow inside the working chamber still falls on the surface of the guide rail, and eventually enters the inside of the slider, which affects the powder spreading function of the equipment, and even causes the slider to fail, and the powder spreading work cannot be realized.

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