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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

Pending Publication Date: 2020-09-25
QUICKBEAM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The amount of powder provided by each layer of printing is too much, and a large amount of powder will accumulate during long-term printing and eventually overflow the forming platform
[0005] 2. The powder provided by each layer of printing is too small, which cannot meet the amount of powder required for each layer of printing, so that part of the part is missing, resulting in printing failure
[0006] 3. The powder provided by each layer is uneven, and the powder in some areas is insufficient, resulting in partial missing parts

Method used

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  • Powder spreading device and additive manufacturing device
  • Powder spreading device and additive manufacturing device
  • Powder spreading device and additive manufacturing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides a powder spreading device, which is applied to an additive manufacturing device, and is used to lay powder at the position of the forming cylinder of the additive manufacturing device, such as figure 1 and figure 2 As shown, the powder spreading device includes a powder spreading platform 1, a powder box 2, a powder pouring box 3 and a scraper 4, wherein the scraper 4 is movably placed on the powder spreading platform 1 to perform powder spreading on the powder spreading platform 1. A forming cylinder is provided on the powder spreading platform 1, and the above-mentioned scraper 4 can lay the powder on the forming cylinder for subsequent additive manufacturing operations. The above-mentioned powder box 2 is arranged above the powder spreading platform 1, and it is used for storing powder, and enables the powder to flow out from the powder outlet 21 below. The above powder dump box 3 is rotatably installed at the powder outlet 21 of the powder...

Embodiment 2

[0057] This embodiment provides a powder spreading device, which is different from Embodiment 1 in that the powder spreading device of the present application can realize two-way powder spreading. Specifically, such as Figure 7 and Figure 8 As shown, there are two powder boxes 2 in this embodiment, and the two powder boxes 2 are respectively arranged at the two ends of the powder spreading platform 1, and the powder outlet 21 of each powder box 2 is provided with a powder container 3 . The scraper 4 of this embodiment can realize two-way powder spreading action, and when the scraper 4 moves to one end, it can drive the powder dump box 3 at the end to rotate to realize the powder delivery.

[0058] Preferably, as Figure 9 As shown, the bracket 41 of the scraper 4 of the present embodiment is provided with two racks 6, and one of the racks 6 can be engaged with a gear 5 on a powder dump box 3, and then drives the powder dump box 3 to rotate to transport Powder in powder b...

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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.

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

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y30/00B33Y40/00
CPCB33Y30/00B33Y40/00Y02P10/25
Inventor 郭超梁爽李龙马旭龙阚文斌
Owner QUICKBEAM CO LTD
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