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3D printing equipment and method

A 3D printing and equipment technology, applied in the field of 3D printing, can solve problems such as liquid level fluctuations, low speed, and mechanical complexity, and achieve the effect of overcoming liquid level fluctuations

Active Publication Date: 2017-07-25
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of 3D printing equipment and method, which utilizes the irradiation source from top to bottom and adopts elements transparent to the irradiation source to fully or partially cover the polymerizable liquid to maintain a stable covering surface, so that there is no need for scraping A new radiation curing step can be carried out to overcome the defects of liquid level fluctuation, mechanical complexity, low speed and inability to print continuously in the traditional "top-down" 3D manufacturing technology

Method used

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  • 3D printing equipment and method

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Embodiment Construction

[0041] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail in conjunction with specific embodiments and with reference to the accompanying drawings. However, those skilled in the art know that the present invention is not limited to the drawings and the following embodiments.

[0042] The invention provides a 3D printing method, such as figure 1 Shown. This method is aimed at the polymerizable liquid, and a three-dimensional object is manufactured by initiating the curing of the polymerizable liquid by irradiation with an irradiation source such as visible light or ultraviolet light. This method is implemented using the radiation source "top-down" approach, including the following steps:

[0043] (a) Provide a workbench and a cover plate, where the cover plate is a component with a cover surface that is transparent to the irradiation source. The construction area of ​...

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Abstract

The invention relates to 3D printing equipment. The 3D printing equipment comprises an irradiation source, a workbench and a liquid tank. The workbench is used for bearing an established 3D body. The liquid tank is used for containing polymerizable liquid of the established 3D body. The 3D printing equipment further comprises a covering plate. The covering plate is located in the liquid tank or at the top of the liquid tank. The irradiation source irradiates from the upper side of the covering plate, and the covering plate is an element transparent to the irradiation source. The lower surface of the covering plate is provided with a covering surface, and the covering surface is kept to make contact with the polymerizable liquid in the printing process. The invention further provides a 3D printing method. According to the technical scheme, new irradiation curing can be performed without scraping flat, and the defects that the liquid level fluctuates, the machine is complex, the speed is low and continuous printing cannot be achieved in a traditional 'from-top-to-bottom' 3D manufacturing technology are overcome.

Description

Technical field [0001] The present invention relates to the field of 3D printing, in particular to a 3D printing device and method. Background technique [0002] 3D printing (three-dimensional manufacturing) is a technology that builds three-dimensional objects by printing layer by layer and accumulating layer by layer based on digital model files. In particular, the use of visible light or ultraviolet light to irradiate the photosensitive resin layer-by-layer curing to construct a three-dimensional object, usually referred to as stereo light curing technology (SLA). Two technologies are known to achieve SLA: one is to add a new layer to the upper surface of the object in the structure, which is called "top-down" manufacturing technology; the other is to add a new layer to the lower surface of the object in the structure , Which is called "bottom-up" manufacturing technology. [0003] Regarding the "top-down" technology, the Chinese patent application number is 201410795471.6 and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/135B29C64/30B33Y30/00B33Y10/00
Inventor 林文雄刘华刚黄见洪张志林紫雄阮开明葛燕黄海洲吴鸿春李锦辉翁文陈金明
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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