Light-sensitive material supplying method and DLP (Data Loss Prevention) principle-based 3D (three-dimensional) printer system

Abstract

The invention discloses a light-sensitive material supplying method and a DLP (Data Loss Prevention) principle-based 3D (three-dimensional) printer system, and belongs to the technical field of 3D printing. The liquid level height of a light-sensitive material in a controllable sample pool is constant. The volume Vi corresponding to each layer of model slice Ni is calculated and serves as the parameter for controlling the light-sensitive material added into the sample pool after finishing printing each layer of model slice Ni and before printing the next layer of model slice Ni+1, so that constant liquid level height of the light-sensitive material in the sample pool can be guaranteed when each layer of model slice is printed. The liquid depth of the light-sensitive material in the sample pool can also be guaranteed to be equal to the thickness h of the single layer of model slice during the process of printing each layer of model slice by further setting the liquid depth of the light-sensitive material in the sample pool to be consistent to the thickness h of the single layer of model slice, so that model printing precision can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a photosensitive material supply method and a 3D printer system based on the DLP principle for realizing the method. Background technique [0002] 3D printing technology, also known as additive manufacturing technology or rapid prototyping technology, is based on 3D digital models, using sticky materials, such as metal or plastic powder, plastic wire, photosensitive resin, etc., through layer-by-layer printing. Techniques for constructing entities. The basic steps are to use a computer to build a 3D model, then slice the 3D model into hundreds or thousands of thin layers, and finally use a 3D printer to print them layer by layer until they are superimposed to form a solid. Compared with traditional manufacturing technology, 3D printing technology has several outstanding advantages: no machining or any mold is required, which greatly reduces manufacturing time and material co...

AI Technical Summary

Problems solved by technology

At present, in the downward projection printing method, an excessive amount of photosensitive material is added to the sample pool to meet the printing requirements. However, this will lead to a higher liquid level in the sample pool, so the formed sample will be soaked in the liquid of the photosensitive material. When When the exposure time is too long, the liquid that exceeds the preset printing layer thickness will be solidified, which will affect the printing accuracy

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