Upward exposure type ceramic photocuring 3D printing equipment and manufacture method thereof

Abstract

The invention discloses upward exposure type ceramic photocuring 3D printing equipment and a manufacture method thereof. The upward exposure type ceramic photocuring 3D printing equipment comprises a machine table, a scraper mechanism, a material supply mechanism, a material trough, a molding platform, a lifting mechanism and a projector, wherein the lifting mechanism is used for driving the molding platform to go upwards and downwards relative to the material trough; the projector is located above the material trough; the scraper mechanism comprises a scraper arranged above the material trough in a spanning manner and a driving assembly used for driving the scraper to slide; a liquid flow channel, a feeding opening and a discharging opening are formed in the scraper, and the discharging opening is arranged in the spanning direction of the scraper; and the material supply mechanism comprises a circulating pump, a recycling hose and an output hose, the recycling hose is connected between an inlet of the circulating pump and the material trough, and the output hose is connected between an outlet of the circulating pump and the feeding opening. The circulating pump pumps photocuring liquid in the material trough and conveys the photocuring liquid into the liquid flow channel of the scraper, and the photocuring liquid flows into the material trough from the discharging opening. A three-dimensional model is easier to separate from the material trough, and the forming reliability of the three-dimensional model is prevented from being affected by the sedimentation of the photocuring liquid.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to an upper exposure type ceramic photocuring 3D printing equipment and a manufacturing method thereof. Background technique [0002] The principle of light-curing 3D printing is: the photosensitive resin is printed in layers according to the pre-designed modeling structure to generate the profile layer of the object. Together, the final 3D model is formed. Light-curing 3D printing technology is mainly used in fields such as mold making, medical equipment, cultural relics protection or architectural design due to its high molding accuracy and material properties, details and surface finish that rival durable plastic parts that are injection-molded. [0003] At present, in the existing under-exposure photo-curing 3D printer, the photosensitive resin is exposed at the bottom of the trough and cured at the lower end face of the forming platform, and the forming platform needs to b...

AI Technical Summary

Problems solved by technology

[0004] But, the shortcoming of existing down-exposure type light-curing 3D printer has: (1) because the surface of every molding of existing down-exposure type light-curing 3D printer is all bonded with the feed tank, so after printing one layer and When the model is directly pulled upwards, since the entire bonding surface is stressed at the same time, the peeling force that separates the model is large and affects the printing accuracy, limiting the printing speed and accuracy

(2) Since the ceramic particles are insoluble in the photosensitive resin, when the ceramic content is too high, the fluidity of the solution will be poor, which will make the density of the printed ceramics uneven, so that the existing lower-exposure photocuring 3D printers cannot perform well. Print ceramic materials

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