Powder spreading device and additive manufacturing device

A powder spreading device and powder spreading technology, which is applied in the field of additive manufacturing, can solve problems such as uneven powder, missing parts, and inability to meet the powder dosage, so as to achieve the effect of uniform powder layer
CN111702178APending Publication Date: 2020-09-25QUICKBEAM CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
QUICKBEAM CO LTD
Publication Date
2020-09-25

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Abstract

The invention belongs to the technical field of additive manufacturing, and discloses a powder spreading device and an additive manufacturing device. The powder spreading device comprises a powder spreading platform, a powder tank, a powder pouring box and a scraper, wherein the powder spreading platform is provided with a first position and a second position; the powder tank is arranged above thepowder spreading platform; the powder pouring box is rotatably connected to the powder tank and can open or close a powder outlet of the powder tank through rotation; the scraper is slidably arrangedon the powder spreading platform and can drive the powder pouring box to rotate; when the scraper slides to the second position from the first position, the powder pouring box opens the powder outlet, and powder in the powder tank is conveyed to the powder scraping side of the scraper; and when the scraper leaves the second position, the powder pouring box closes the powder outlet. According to the powder spreading device and the additive manufacturing device provided by the invention, the scraper is moved between the first position and the second position, so that the powder pouring box canbe rotated, the powder in the powder tank is conveyed to the powder scraping side of the scraper through the powder pouring box, the conveying capacity of the powder in the powder tank can be effectively controlled, each layer of conveyed powder capacity is ensured to be enough, and the occurrence of the phenomenon that the powder is too much or too little is avoided.
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Description

technical field

[0001] The invention relates to the technical field of additive manufacturing, in particular to a powder spreading device and an additive manufacturing device. Background technique

[0002] Additive manufacturing (3D printing) is a manufacturing technique that builds three-dimensional objects by successively fusing more than one thin layer of material. Powder bed additive manufacturing is a kind of additive manufacturing technology route. Its basic process steps are as follows: the three-dimensional model is stored in the computer, and the model is layered to obtain the cross-sectional data of each layer. The powder system (device) spreads the powder material into a thin layer on the working platform, and a high-energy-density ray beam (laser or electron beam) scans a section of the three-dimensional model on the powder layer; after that, the working platform descends by a thickness of the powder layer Spread a new layer of powder on the working platform, sc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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