Scraper device and photo-curing equipment with scraper device

Abstract

The invention relates to the technical field of printing by photo-curing equipment, in particular to a scraper device and photo-curing equipment with the scraper device. The scraper device comprises ascraper body and an air extraction device, wherein a cavity is arranged in the interior of the scraper body; one side, used for scraping a liquid level, of the scraper body is provided with a liquidinlet notch used for feeding liquid resin; and the air extraction device communicates with the cavity of the scraper body to extract air in the cavity, so that the liquid resin is sucked into the cavity of the scraper body under the action of negative pressure. According to the scraper device, a part of the photosensitive resin is stored in the cavity of the scraper body due to the negative pressure; when the liquid level is higher than a scraper lower edge, the air extraction device extracts the air from the cavity of the scraper body, so that the negative pressure is formed in the cavity, and the photosensitive resin is adsorbed into the cavity of the scraper body under the action of the atmospheric pressure; when the liquid level is lower than the scraper lower edge, the photosensitiveresin in the cavity of the scraper body can flow out into the liquid level to ensure that the liquid level is flush with the scraper lower edge; and the photosensitive resin is not prone to generatingbubbles, and the printing effect is improved.

Description

technical field [0001] The invention relates to the technical field of photocuring equipment printing, in particular to a scraper device and a photocuring equipment having the same. Background technique [0002] At present, photocuring rapid prototyping technology is a typical layer-by-layer manufacturing method, which uses photosensitive resin as raw material, and photosensitive resin is cured by ultraviolet light in liquid state to form solid parts. Under the control of the computer, the ultraviolet laser scans point by point on the liquid surface of corresponding materials such as liquid photosensitive resin according to the layered cross-section information of the part. The liquid photosensitive resin in the scanned area is cured by photopolymerization to form a part. Layered section; after one layer is cured, the working platform is lowered by a layer-thick distance, the mechanical device controls the movement of the scraper, and a new layer of liquid photosensitive res...

AI Technical Summary

Problems solved by technology

The printing efficiency and effect of photocuring equipment are directly related to the bubbles on the surface of the photosensitive resin. The bubbles in the liquid photosensitive resin may cause a large number of bubble holes inside the printed part, resulting in a decline in the quality of the molded part.

[0003] The existing conventional method of removing air bubbles is to use the traditional mechanical scraper body to scrape the liquid surface to eliminate air bubbles. When the liquid photosensitive resin overflows the layered section of the cured part, the hard scraper body may Due to the insufficient amount of photosensitive resin, the photosensitive resin cannot completely cover the parts, resulting in bubbles still existing, and the bubbles are not easy to eliminate. It is necessary to scrape the liquid surface of the photosensitive resin again, and the printing process time is prolonged, and the printed not effectively

Images