Method and device for producing a three-dimensional object

A three-dimensional object and shaping technology, applied in the directions of additive manufacturing, machining, manufacturing tools, etc., which can solve the problems of mask heat, falling shielding materials, and not allowing the complete elimination of diffraction effects.

Inactive Publication Date: 2012-05-30
SINTERMASK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Aside from the fact that this does not even allow for the complete elimination of diffraction effects, the disadvantage of using this method as a solution is that masking material (colorant) falls onto the part and contaminates the target layer
[0010] Another disadvantage in all known methods is that the mask is very hot due to radiation; for example, temperatures between 150°C and 190°C can occur
However, the material stability of the masking material is low, so that a masking material that has already been used once cannot usually be used a second time

Method used

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  • Method and device for producing a three-dimensional object
  • Method and device for producing a three-dimensional object
  • Method and device for producing a three-dimensional object

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Embodiment Construction

[0051] All figures only schematically show the invention and its basic structure. Herein, the same reference numerals refer to elements having the same or comparable functions.

[0052] A layer production unit known from the prior art is schematically shown in FIG. 1 . In the build chamber 2 defining the build space 1 of the unit is provided an optical window 3 through which infrared rays 4 can enter the build chamber 2 from a radiation source 5 arranged outside the build chamber 2 . The toner mask 9 arranged in the chamber on the mask carrier 8 directly above the build plane 6 of the object 7 to be produced is irradiated with infrared radiation 4 , whereby layers of the object 7 are created. After this level of exposure, the powder bed 11 is moved down a defined distance and the mask carrier 8 is removed from the build chamber 2 in order to print the mask 9 required for the next layer exposure by the printer 12 .

[0053] figure 2 On the contrary, a layer production unit a...

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PUM

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Abstract

The invention relates to a method for producing a three-dimensional object (7) by selectively fixing a construction material, whereby the surface of a mask (9) is irradiated by means of at least one radiation source (5). According to the invention, the mask (9) is arranged at a distance from the construction plane (6) and an optical imaging element (13) is used to produce a reproduction of the mask (9) on the construction plane (6).

Description

technical field [0001] The invention relates to a method for producing three-dimensional objects by selectively curing a shaping material, in which method a mask is areally irradiated by at least one radiation source. Background technique [0002] Various creation methods are known from the prior art for producing three-dimensional objects, for example laser sintering or selective mask sintering (SMS) processes. With these thermal methods, three-dimensional objects are produced directly from CAD data by means of additive production methods. The object is created in layers, by layers of shaping material being applied successively on top of each other. Before each application of the next layer, the parts of the respective layer corresponding to the manufactured object are cured. Curing is achieved by locally heating the powder layered material by means of a radiation source. Since the rays are introduced into the desired region in a targeted manner, precisely defined object...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/00
CPCB29C67/0085B29C67/0077B29C64/153B29C64/282B29C64/286
Inventor C·弗路得D·赫尔曼
Owner SINTERMASK
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