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Vibratory powder laying device of selective laser melting formation device

A technology of laser selective melting and forming equipment, applied in the field of 3D printing, can solve the problems of unsatisfactory powder compaction effect, reduce powder bed pressure, powder cannot flow out, etc., to reduce the phenomenon of powder inclusion, improve powder fluidity, The effect of reducing performance requirements

Active Publication Date: 2018-03-16
SICHUAN AEROSPACE LONG MARCH EQUIP MFG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The mechanism adopts a mobile hopper to spread the pressed powder, which also has the function of a scraper, which can prevent the powder from accumulating in front of the roller or scraper, and reduce the pressure on the powder bed; the disadvantage is that the effect of compacting the powder is not very ideal, and when the forming material is For powders with poor fluidity, the powder cannot flow out of the hopper slit due to bridging phenomenon

Method used

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  • Vibratory powder laying device of selective laser melting formation device
  • Vibratory powder laying device of selective laser melting formation device
  • Vibratory powder laying device of selective laser melting formation device

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Embodiment

[0029] see Figure 1-3 , a vibrating powder spreading device for laser selective melting and forming equipment, including a pressing plate 1, a scraper 2, a scraper seat 4 and a vibration motor 3, the scraper 2 is fixed on the scraper seat 4 through the pressing plate 1 and screws, and the scraper seat 4 It is an elastic structure, the vibration motor 3 is fixed to the scraper seat 4 by screws, and the axis of the vibration motor 3 is kept parallel to the scraper 2 and the working plane;

[0030] Such as image 3 As shown, the scraper seat 4 is L-shaped as a whole, with triangular reinforcing ribs 5 at the corners. The scraper seat 4 is processed with a hollow channel 6 in the area above the installation position of the scraper 2. The exterior of the channel 6 is in the shape of a rectangular slit. It is in the shape of a round hole, and only a very narrow part of the connection area is reserved in the cross section, forming an elastic deformation area, that is, the bending d...

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Abstract

The invention discloses a vibratory powder laying device of a selective laser melting formation device. The vibratory powder laying device comprises a pressing plate, a scraping plate, a scraping plate seat and vibration device, wherein the scraping plate is fixed to the scraping plate seat through the pressing plate and a connector, the vibration device is fixed to a vibration device seat througha connector, and the scraping plate seat is of an elastic structure. The vibratory powder laying device is simple in structure and motion way and easy to control. Powdery layer compaction is more effective by utilizing vibration, the scraping plate does not need the design of a powder-laying front corner, and a powder involvement phenomenon is avoided. Powder attached to the scraping plate can drop in advance by utilizing vibration, and the powder laying quality can be improved. The powder liquidity can be also improved, the performance requirement for a powder material is reduced, and the processing cost is saved.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a vibrating powder spreading device for laser selective melting and forming equipment. Background technique [0002] Selective laser melting (SLM) forming is a rapid prototyping technology of parts using powder as raw material through selective melting process. It is a hot spot in the field of rapid manufacturing at present. A layer of raw material powder, and then the processing source divides the powder according to the cross-sectional shape of the part to form the cross-sectional profile of the part. After a layer of powder is formed, the powder spreading device spreads another layer of powder on the forming working surface, and the processing source conducts area selection operations on the layer of powder again, and completes the fusion between the newly formed layer and the original part, and so on. Layers are built up to form a solid body. [0003] At present, the co...

Claims

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Application Information

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IPC IPC(8): B22F3/105B29C64/205B29C64/153B33Y40/00
CPCB33Y40/00B22F10/00B22F10/28B22F12/67Y02P10/25
Inventor 杨振宇丑西平胡东罗恒张虎
Owner SICHUAN AEROSPACE LONG MARCH EQUIP MFG CO LTD
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