Laser selective melting forming equipment vibration powder spreading device

A technology of laser selective melting and forming equipment, which is applied in the field of 3D printing, can solve the problems of unsatisfactory compacted powder effect, powder cannot flow out, and reduce powder bed pressure, so as to reduce powder entrainment, reduce performance requirements, and improve Effect of Powder Flowability

Active Publication Date: 2019-09-24
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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  • Laser selective melting forming equipment vibration powder spreading device
  • Laser selective melting forming equipment vibration powder spreading device
  • Laser selective melting forming equipment vibration powder spreading 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 circular 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 bendin...

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Abstract

The invention discloses a vibrating powder spreading device for laser selective melting and forming equipment, which includes a pressing plate, a scraper, a scraper seat and a vibrating device, wherein the scraper is fixed on the scraper seat through a pressing plate and a connecting piece, and the The vibrating device is fixed to the scraper seat through a connecting piece, and the scraper seat is an elastic structure; the structure and movement mode of the present invention are simple and easy to control; it is more effective to use vibration to compact the powder layer, and the scraper does not need to be designed before powder spreading. The angle can reduce the phenomenon of powder trapping; the use of vibration can make the scraper sticky powder fall off in advance, improve the quality of powder spreading; it can also improve the fluidity of powder, reduce the performance requirements for powder materials, and save processing costs.

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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Patent Type & Authority Patents(China)
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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