Optical three-dimensional moulding method and device

Abstract

The optical modeling method and the optical modeling device use a planar drawing mask capable of changing the mask image, and move the planar drawing mask in a parallel state on the surface of the photocurable resin composition, while simultaneously according to the light to be formed. The cross-sectional shape pattern of the cured resin layer is synchronized with the movement of the planar drawing mask, and the mask image of the planar drawing mask is changed, and light is irradiated on the surface of the photocurable resin composition through the planar drawing mask. , forming a photocured resin layer having a predetermined cross-sectional shape pattern.

Description

Technical field [0001] The invention relates to an optical three-dimensional modeling method and an optical three-dimensional modeling device using a photocurable resin composition. In more detail, the present invention relates to such an optical three-dimensional modeling method and an optical three-dimensional modeling device. It uses light-curable resin to manufacture various three-dimensional modeling objects from small to large, with high modeling accuracy and no uneven curing. Fast speed and high production efficiency. Background technique [0002] In recent years, optical modeling methods and devices have been put into practical use for curing photocurable resins based on data input into 3D CAD to produce three-dimensional objects. The reason why this optical modeling technology is eye-catching is that the model used to verify the appearance design during the design process, the model used to check the functionality of the part, the resin mold used to make the mold, the ba...

AI Technical Summary

Problems solved by technology

[0004] However, in the case of using the point-shaped ultraviolet laser according to the above-mentioned conventional method, one point-shaped laser is irradiated on the surface of the photocurable resin while moving to form a planar photo-curable pattern. This is the so-called point-scanning method, so The existing problems are: the modeling takes a long time and the production efficiency is low

Therefore, in the case of using this method, the exposure is not performed continuously, but intermittently, so the modeling speed is slow.

And in the case of adopting this method, the moving range of the liquid crystal barrier is divided into a plurality of sections, and the photocurable resin composition is cured in the state where the liquid crystal barrier is stopped in each division. The curing state is discontinuous at the boundary part of the moving area, and unevenness is likely to occur, which is likely to be accompanied by intensity spots, insufficient strength, poor appearance, and reduced dimensional accuracy of the entire three-dimensional shape.

Images