Photocuring 3D printing system and method

Abstract

The invention relates to a photocuring 3D printing system and method. According to the photocuring 3D printing system, at least part of area of the bottom of a paving device is a photic zone, and light beams on the upper portion can penetrate through the photic zone; and the paving device and a photosensitive printing material move relatively, the photosensitive printing material is paved on a carrier below the photic zone, and when the paved photosensitive printing material is still in an extrusion state, the light beams penetrate through the photic zone and selectively irradiate the photosensitive printing material to form a curing layer according to information of a printed three-dimensional model. Paving and photocuring can be conducted at the same time, at the same time, a plurality of printing heads can conduct paving and printing along different layers, and the higher printing speed can be achieved; the system can be set or controlled through a device to achieve accurate control; and the printing device operates more reliably and is especially suitable for occasions with mounting foundations of printing devices being movable, like ships, trains and airplanes.

Description

technical field [0001] The invention relates to a printing device and method, in particular to a light-curing 3D printing system and a printing method. Background technique [0002] Existing photocuring printing methods mainly use laser or DLP light sources to irradiate photosensitive resin to form a cured layer, and layer by layer stacking to form a three-dimensional model, such as SLA (Stereo Lithography Apparatus) or DLP (Digital Light Processing) photocuring printing methods. For the paste mixed with photosensitive resin and other powder materials, the method of spreading powder similar to SLS (Selective Laser Sintering) or 3DP (powder on the powder bed and then superimposed layer by layer of selective jetting binder to make the model) is generally adopted. The photosensitive printing material is scraped flat, and then irradiated with light beams to form a cured layer, and then repeat the above process to stack the cured layers until the 3D model is printed. Since the p...

AI Technical Summary

Problems solved by technology

Since the paving and light curing are carried out in time, the printing speed is affected. In addition, the paste-like photosensitive printing materials, such as photosensitive resin or photosensitive resin and other powder materials formed viscous award-winning printing materials, the thickness of the laying is easy to be scratched. Board gap, scraper moving speed, temperature or vibration of material carrier (printing platform), viscosity and surface characteristics of printing material, or printing material composition formula, pressure of slurry printing material and other factors, which in turn affect laying Accuracy of layer thickness and accuracy of 3D model

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