Continuous instantaneous exposure photocuring printer provided with anti-sticking resistance-reducing nano-structured tank bottom

Abstract

The invention discloses a continuous instantaneous exposure photocuring printer provided with an anti-sticking resistance-reducing nano-structured tank bottom. The printer comprises a curing light source, a micromirror array, a resin tank, a bearing plate for bearing printing parts, a side supporting plate, a feeding device and a base. The base is used for fixing the curing light source, the micromirror array and the side supporting plate. The resin tank and the feeding device are fixed to the side supporting plate. The bearing plate for bearing the printing parts is connected with the feeding device. The surface of the resin tank is made of a breathable lyophobic material, and the surface of the resin tank is of a quasi-periodical nano structure; the drag force in the lifting process for part printing is reduced through the nano lyophobic structure, and the contact area between resin and the boundary of the tank bottom is reduced; and the light transmittance can be increased through a sub-wavelength nano-structured array on the surface of the tank bottom. By the adoption of the continuous instantaneous exposure photocuring printer provided with the anti-sticking resistance-reducing nano-structured tank bottom, the adhesive force between the bottom of a part and the surface of the tank bottom can be obviously reduced in the printing process, and thus continuous and rapid printing of high-precision complex microstructures is achieved.

Description

technical field [0001] The invention belongs to the field of surface exposure 3D printing, and in particular relates to a photocuring printer for continuous rapid exposure of the groove bottom of anti-adhesive and drag-reducing nanostructures. Background technique [0002] Surface exposure 3D printing is to generate a layered contour mask, and one exposure completes the curing of one layer of the solid part, which can significantly improve the molding efficiency. Surface exposure molding is divided into two methods: free surface exposure (top exposure type) and constrained surface exposure (bottom exposure type). Compared with the free surface exposure method, the constrained surface exposure has the following advantages: material saving; the cured layer is not in contact with the air, avoiding the problem of oxygen imitation curing, high precision; no need for resin re-spreading and scraping action, high efficiency ; Avoid possible damage to the fine structure by scraping....

AI Technical Summary

Problems solved by technology

The main problem in the constrained surface exposure process is that the interface adhesion force that needs to be overcome when the cured resin layer is peeled from the bottom of the groove is large, and the resin will repeatedly form a cured layer on the bottom surface of the molding chamber and peel off during the peeling process, resulting in Part processing failed

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