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Powder spreading device and additive manufacturing device

A powder spreading device and additive manufacturing technology, which is applied in the field of 3D printing, can solve the problems of low powder spreading efficiency and achieve the effect of avoiding waste and improving powder spreading efficiency

Inactive Publication Date: 2017-02-22
QUICKBEAM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a powder spreading device and an additive manufacturing device, which solves the problem of low powder spreading efficiency existing in the existing additive manufacturing device

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

[0031] This embodiment provides a powder spreading device, such as figure 1 As shown, the powder spreading device includes a powder spreading platform 11, a hopper 12, a powder conveying mechanism (not shown) and a scraper 13, wherein powder material is placed in the hopper 12, which is arranged above the powder spreading platform 11 both sides, The powder conveying mechanism is located below the hopper 12 and connected to the hopper 12 for conveying the powder material in the hopper 12 to the powder spreading platform 11 . The scraper 13 is arranged on the powder spreading platform 11 and can move along the horizontal direction for laying the powder material.

[0032] In this example, refer to figure 1 and figure 2 Above-mentioned scraper 13 is arranged vertically, and it comprises two groups of blades 131 that are vertically and parallelly arranged, and the connection structure 132 that connects two groups of blades 131, is formed with placement cavity 14 between above-me...

Embodiment 2

[0052] 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 opened 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. The amount of powder material entering the through hole 111 is detected, and the amount of powder material to be transported next time is adjusted according to the detected result, so as to avoid waste of powder material.

[0053] Specifically, the detection device 3 includes a pipeline 31 with one end connected to the through hole 111 , a recovery box 32 located at the other end of the pi...

Embodiment 3

[0057] 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.

[0058] The detection process of the above-mentioned dete...

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Abstract

The invention belongs to the technical field of 3D printing, and discloses a powder spreading device and an additive manufacturing device. The powder spreading device comprises a powder spreading platform, hoppers and a scraper. The hoppers are located above two sides of the powder spreading platform, and are filled with powder materials. The scraper is arranged on the powder spreading platform, is vertically arranged and moves in the horizontal direction. A placing cavity communicating with the powder spreading platform is formed in the scraper. The powder materials in the hoppers are conveyed in the placing cavity, and are driven by the scraper to move. The additive manufacturing device comprises the powder spreading device. According to the powder spreading device, the scraper is vertically arranged and can move in the horizontal direction, so that bidirectional spreading of the powder materials can be realized; the placing cavity is formed in the scraper, the placing cavity is filled with the powder materials, and compared with a conventional additive manufacturing device for spreading powder bidirectionally, the scraper does not need to ascend, horizontally move and descend, and all that is needed is to horizontal move, bidirectional powder spreading can be completed, so that time waste is avoided, and the powder spreading efficiency is effectively improved.

Description

technical field [0001] The invention relates to the technical field of 3D printing, 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, scan the next...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y30/00
CPCB22F3/003B33Y30/00B22F10/00B22F12/52B22F12/224B22F12/67B22F10/28B22F10/73Y02P10/25
Inventor 马旭龙郭超林峰张磊向虎
Owner QUICKBEAM CO LTD
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