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Powder distribution device and additive manufacturing device

A dispensing device and additive manufacturing technology, applied in the field of additive manufacturing, can solve the problem of uneven thickness of the powder layer, achieve the effect of uniform thickness and improve the efficiency of powder spreading

Inactive Publication Date: 2016-08-17
QUICKBEAM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a powder distribution device, which adopts a two-way powder scraping method to solve the problem of uneven thickness of the powder layer existing in the existing one-way powder scraping

Method used

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  • Powder distribution device and additive manufacturing device
  • Powder distribution device and additive manufacturing device
  • Powder distribution device and additive manufacturing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a powder dispensing device, such as figure 1 Shown, comprise powder spreading platform 11, hopper 12, scraper 13, plate 14 and vibrator 15, wherein:

[0032] The powder spreading platform 11 is used as a carrier for powder laying, and it is arranged horizontally. There are powder material placement places (not shown in the figure) on both sides of the powder spreading platform 11 for placing powder materials to be laid.

[0033] The hopper 12 is arranged above the two sides of the powder spreading platform 11, and powder materials are placed therein, and the lower opening of the hopper 12 is provided for conveying the powder materials therein. In this embodiment, preferably, the above two hoppers 12 are arranged symmetrically.

[0034] Below the hopper 12 is fixedly connected with a flat plate 14, and one end of the flat plate 14 is connected with a vibrator 15, and the vibrator 15 is connected to a controller (not shown in the figure), and the...

Embodiment 2

[0053] In this embodiment, a detection device 3 is added on the basis of the additive manufacturing device in Embodiment 1, specifically, as Figure 8 As shown, the detection device 3 is arranged in the forming chamber 1 and symmetrically arranged on both sides of the forming cylinder 2 . In this embodiment, a number of through holes 111 located on both sides of the forming cylinder 2 are provided on the powder spreading platform 11. When the scraper 13 lays the powder material, part of the powder material will fall into the through hole 111, and the detection device 3 will detect the falling into the powder material. The amount of the powder material in the through hole 111 is detected, and the amount of the powder material to be transported next time is adjusted according to the detected result, so as to avoid waste of the powder material.

[0054] Specifically, the detection device 3 includes a pipeline 31 with one end connected to the through hole 111 , a recovery box 32 l...

Embodiment 3

[0058] The difference between this embodiment and Embodiment 2 is that the structure of the detection device 3 is different, specifically, refer to Figure 9 , the detection device 3 of this embodiment includes a pipeline 31 connected to the through hole 111 at one end, a recovery box 32 located at the other end of the pipeline 31 , and a proximity switch 33 a located on the pipeline 31 . In this embodiment, the detection of the amount of powder material is carried out through the proximity switch 33a. Specifically, when the powder material passes through the pipeline 31, it will block the proximity switch 33a, and the proximity switch 33a will generate a pulse signal, and the amount of powder material falling into the through hole 111 The larger the value is, the longer the time of flowing through the pipeline 31 is, the longer the time of blocking the proximity switch 33a is, and the larger the width of the pulse is.

[0059] The detection process of the above-mentioned dete...

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Abstract

The invention belongs to the field related to additive manufacturing and discloses a powder distribution device and an additive manufacturing device. The powder distribution device comprises a powder spreading platform and hoppers arranged above two sides of the powder spreading platform, powder materials are placed in the hoppers, powder-material placing locations are arranged on the two sides of the powder spreading platform, the powder materials are transferred to the powder-material placing locations through the hoppers, scrapers vertically arranged above the powder spreading platform are allowed to move along the horizontal direction as well as the vertical direction, and the scrapers are respectively located on one sides of the powder-material placing locations when moving along the vertical direction. The powder distribution device is provided with the scrapers allowed to move along the horizontal direction as well as the vertical direction, two-way powder scraping is realized, thickness of powder layers is evener as compared with the existing one-way powder scraping, and powder spreading efficiency is improved. Further more, the scrapers are vertically arranged, so that two-way powder scraping can be better realized, and waste of the powder materials is avoided.

Description

technical field [0001] The invention relates to the technical field related to additive manufacturing, in particular to a powder distribution 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 p...

Claims

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Application Information

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IPC IPC(8): B22F3/105B29C67/00B33Y30/00B33Y40/00
CPCB33Y30/00B33Y40/00B22F10/00B22F10/36B22F12/55B22F12/30B22F10/28B22F10/32B22F12/222B22F12/52B22F12/224B22F12/90B22F12/67B22F10/73Y02P10/25
Inventor 郭超林峰马旭龙葛文君张磊向虎
Owner QUICKBEAM CO LTD
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