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Intelligent control method for light intensity in 3D printer

A 3D printer and intelligent control technology, applied in the field of 3D printing, can solve problems such as affecting printing efficiency, dark projection surface, loss of light intensity, etc.

Active Publication Date: 2021-09-28
ZHEJIANG FLASHFORGE 3D TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method will lose most of the light intensity, causing the projection surface to be too dark and affecting printing efficiency

Method used

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  • Intelligent control method for light intensity in 3D printer
  • Intelligent control method for light intensity in 3D printer
  • Intelligent control method for light intensity in 3D printer

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Experimental program
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Embodiment Construction

[0052] An intelligent control method for light intensity in a 3D printer, which adjusts the light uniformity of projection by means of light source circuit partition control and light intensity compensation;

[0053] Among them, the light source circuit partition control method is as follows:

[0054] a. Adjust the light source intensity of all lamp beads to the maximum, and use the sensor to record the light transmission intensity of different areas of the screen;

[0055] b. Use the spline interpolation method to generate a continuously changing light intensity surface, record the light intensity surface information as (x, y, Z), where x, y record the position information of the surface, Z is the value of the surface, traverse the surface, and get Zmin and Zmax, layer Zmin and Zmax to get the layered list zList, traverse the surface again, classify the surface information and push it into zList;

[0056] c. Make a suitable optical path surface according to the layered area ...

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Abstract

The invention discloses a light intensity intelligent control method in a 3D printer. The light ray uniformity of projection is adjusted through a light source circuit partition control and light intensity compensation mode, in the light source circuit partition control, light penetrating through a projection surface is forcibly made into a light path curved surface, and layering is performed according to curved surface data, and the illumination intensity of lamp beads in the same layer is connected and controlled, and the light intensities in different areas can be adjusted to a same mean value, so that the light intensities are consistent. In light intensity compensation, the light intensities are compensated circularly and repeatedly through light intensity compensation pictures, bright positions are darkened, dark positions are brightened, finally, an ideal light intensity compensation picture is obtained after multiple times of circulation, the light intensity compensation pictures are applied to a projection imaging system of a photocuring printer, uniform light intensity distribution of a projection surface is achieved, and printing precision is improved.

Description

technical field [0001] The invention belongs to the field of 3D printing, and in particular relates to an intelligent control method for light intensity in a 3D printer. Background technique [0002] Light-curing rapid prototyping technology is a high-precision additive manufacturing process. The light source is irradiated on the light-curing resin according to the cross-section of the three-dimensional model, so that the light-curing resin is cured and formed layer by layer to form a three-dimensional model entity. Some existing light-curing 3D printers use LCD projection screens. The top of the projection screen is filled with light-curing resin. The cross-section of the required printed model is transmitted to the projection screen layer by layer. The light source installed at the bottom of the projection screen shines on the projection screen. The resin is cured layer by layer according to the pattern on the projection screen. [0003] In the printing process of surface...

Claims

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Application Information

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IPC IPC(8): B29C64/386B29C64/124B33Y50/00
CPCB29C64/386B29C64/124B33Y50/00
Inventor 贺夫昌章国挺林鹏区宇辉裴文剑
Owner ZHEJIANG FLASHFORGE 3D TECH CO LTD
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