Photosensitive material supply method and 3D printer system based on dlp principle

A 3D printer and photosensitive material technology, applied in the field of 3D printing, can solve the problems of high liquid level and affect the printing accuracy, and achieve the effect of improving the accuracy

CN106827510BActive Publication Date: 2019-10-29SICHUAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-10-29

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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.
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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...

Examples

Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Wherein, the photosensitive material supply method described in the present invention is used to control the supply amount of the photosensitive material on a 3D printer based on the DLP principle. .

[0029] Such as Figures 1 to 5 Shown in, the photosensitive material supply method of the present invention, comprises the following steps:

[0030] A. Establish a digital 3D model of the sample to be printed;

[0031] B. Slicing the digital 3D model to obtain multi-layer model slices N i , and the single-layer model slice N i The thickness of is h, where i represents the corresponding model slice N when counting from the bottom to the top of the digital 3D model i the level at which

[0032] C. Calculate the model slice N of each layer i The corresponding volume V i ;

[0033] D. From the bottom to the top of the digital 3D model, slice N...