A method for intelligently controlling light intensity in a 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: 2022-05-13
ZHEJIANG FLASHFORGE 3D TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A method for intelligently controlling light intensity in a 3D printer
  • A method for intelligently controlling light intensity in a 3D printer
  • A method for intelligently controlling light intensity in a 3D printer

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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 an intelligent control method for light intensity in a 3D printer, which adjusts the uniformity of projected light through light source circuit partition control and light intensity compensation. In the light source circuit partition control, the light intensity passing through the projection surface is made into an optical path Surface, and layered according to the surface data, connect and control the light intensity of the lamp beads in the same layer, the light intensity between different areas can be adjusted to the same average value, so as to achieve consistent light intensity. In the light intensity compensation, the light intensity is compensated repeatedly through the light intensity compensation picture cycle, the bright part is darkened, the dark place is brightened, and finally the ideal light intensity compensation picture is obtained after many cycles, and the light intensity compensation picture is applied to the light curing printer The projection imaging system realizes uniform distribution of light intensity on the projection surface and improves printing accuracy.

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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Patent Type & Authority Patents(China)
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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