3D printing system for dynamic imaging and printing method thereof

Abstract

The invention discloses a 3D printing system for dynamic imaging and a printing method thereof and belongs to the technical field of 3D printing. The printing method comprises the following steps of taking a spatial light modulator as a dynamic pattern generation apparatus; carrying out beam collimation and shaping by an exposure light source through an illuminating system; radiating the surface of the spatial light modulator to radiate the dynamic pattern on the surface of the spatial light modulator to the surface of a two-dimensional displacement platform through a projecting exposure objective; matching continuous loading of the dynamic pattern and scanning movement of the two-dimensional displacement platform synchronously; and further controlling the position of a focal face of a projecting lens for scan exposure layer by layer to achieve high precision, large area and dynamic imaging 3D printing. The system solves the problem that high precision and large area cannot be considered at the same time in a conventional 3D printing process, achieves joint-free high precision 3D printing of a meter-scale structure, and can be widely applied to various industrial manufacturing demands.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a dynamic imaging 3D printing system and a printing method thereof. Background technique [0002] With the popularization of 3D printing, 3D printing can be applied in more and more extensive fields, and various 3D printing technologies and equipment have also been developed one after another. Among them, light-curing 3D printing has become the most common 3D printing technology on the market due to its high-quality structure, fine feature size and complex geometry. Its specific technologies mainly include the following three types, namely: LCD (Liquid Crystal Display technology) 3D printing, SLA (laser scanning stereolithography) 3D printing and DLP (digital light processing) 3D printing. [0003] LCD technology is a commonly used 3D printing technology, and it is also an earlier 3D printing technology popularized by the public. This technology uses optical proj...

AI Technical Summary

Problems solved by technology

The advantages of this technology are: the system structure is simple, the core component is an LCD liquid crystal panel, and the cost is low; but its disadvantages are: the liquid crystal pixel gap is large, the printing accuracy is low; the liquid crystal material is greatly affected by the environment, and the printing system is unstable

The advantages of this technology are: the pixel gap is small, the printing accuracy is high, the DLP chip is sealed and packaged, and the printing system is relatively stable; but its disadvantages are: the exposure method of point-by-point scanning greatly reduces the processing efficiency, and due to the use of galvanometer To control the scanning range of the spot, it is impossible to print large-scale structures

The advantages of this technology are: high printing accuracy, static projection exposure replaces the point-by-point scanning exposure of SLA, and fast printing speed; but its disadvantages are: subject to the limitation of static projection exposure, its printing area is small, only the projection spot area, so large-scale structures cannot be printed

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