Method and device for 3D printing with a narrow wavelength spectrum
A 3D, wavelength technology, applied in 3D object support structures, manufacturing tools, laser welding equipment, etc., can solve the problems of reducing device efficiency, reducing the effective power of 3D printing methods, etc., to reduce the size of the radiator, compact machine Geometry, the effect of eliminating heating or cooling times
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Embodiment 1
[0126] Example 1: Device with sintered lamps, comprising LED radiators with wavelengths, with thermal overhead lamps.
[0127] According to FIG. la), the construction process or process cycle begins with coating the construction platform with a powder layer. During coating by the coater (101), the powder is heated by the overhead radiator (108) if not optically covered by the coater (101). Only the sintering radiator ( 109 ), which provides radiation that heats the covered surface well, is not switched on in this step.
[0128] The overhead radiator (108) includes measuring devices for regulating the surface temperature of the construction zone. Ideally, the measuring device is implemented as a pyrometer ( 508 ), which can determine the temperature without contact. This adjustment has to take into account that the measuring device is always darkened again by the printing head (100) and the applicator (101). This can be done by switching off the measured value acquisition or...
Embodiment 2
[0134] Example 2: Arrangement of a sintered radiator assembly comprising LED radiators with two wavelengths and no overhead lamp
[0135] according to Figure 5 The build process or process cycle begins with coating the build platform (102) with a powder coat. The sintering radiator (501) of the assembly (109), which also provides good heating of the unprinted surface radiation. The energy supply is controlled here via power and movement speed. Advantageously, the resulting temperature is detected and also regulated.
[0136] In a second step, an activator is applied which is precisely tuned to the wavelength of the radiation source ( 500 ) of the area to be printed. The image applied to the powder by the print head (100) is consistent with the current shaped body. At the beginning of the process, a base layer is often printed. Here, the print head prints the entire surface that can be used as a build surface.
[0137] The third step is the sintering process. Here, the...
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Abstract
Description
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