Photocuring 3D printing device and printing method

Abstract

The invention relates to a light-curing 3D printing device and printing method. The model plate and the light-transmitting plate can move relatively linearly. There is a tilting mechanism, and the relative tilting direction and tilting angle between the model plate and the light-transmitting plate can be adjusted through the tilting mechanism. The printing method includes: analyzing the printing model data; adjusting the position of the model plate and / or the light-transmitting plate, filling the printing material in the printing forming area, and curing the printing material by beam irradiation; the tilting mechanism drives the model plate and / or the light-transmitting plate to swing The light-transmitting plate is gradually separated from the solidified model, and the inclination direction and angle of the model plate and / or the light-transmitting plate are adjusted; repeat the above two steps to print layer by layer until the entire model is printed. The invention can increase the separation speed of the solidified model and the light-transmitting plate during the printing process and the speed at which the printing material flows into the forming area between the solidified model and the light-transmitting plate, thereby improving the printing efficiency.

Description

technical field [0001] The invention belongs to the technical field of photo-curing 3D printing, and in particular relates to a photo-curing 3D printing device and a printing method. Background technique [0002] 3D printing is a method of constructing objects by printing layer by layer based on digital model files, including SLA, DLP, LCD / LED and other light curing methods. For example, UV (ultraviolet light) or visible light is used to selectively cure the photocurable resin layer by layer to form a three-dimensional model. For example, the 3D printing method based on DLP (Digital Light Processing) is to project the surface imaging beam formed according to the section pattern of the three-dimensional model onto the photosensitive resin printing material to achieve single-layer curing, so that the layers are cured and stacked to form a three-dimensional model; SLA (Stereo Lithography Apparatus) is to use the laser beam to focus on the photosensitive resin material accordin...

AI Technical Summary

Problems solved by technology

This method greatly reduces the printing speed due to the repeated movement of the model, and also affects the printing accuracy of the model

Another way to solve the above technical problems is to infiltrate the inhibitor into the resin on the model side of the transparent plate to form a photocuring "dead zone". Even if the resin material in the "dead zone" is illuminated, it will not be cured, preventing The model is bonded to the light-transmitting plate, but this printing method is not suitable for printing opaque resin materials. For opaque resin materials, the "dead zone" will affect the beam penetration, thereby affecting the printing speed of the 3D model

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