Lower aeration type ceramic photocuring forming machine

Abstract

The invention discloses a lower aeration type ceramic photocuring forming machine which comprises a rack, a trough, a projector, a printing platform, a lifting motor, a controller, and a moving mechanism. The trough is provided with a material cavity provided with an upward cavity opening and used for holding photocuring liquid; the controller is electrically connected with the lifting motor and the projector, and controls the lifting motor to drive the printing platform to move; the moving mechanism comprises a rotary shaft, a crank, a connecting rod, a sliding plate, and a driver used for driving the rotary shaft to rotate and electrically connected with the controller; the driver drives the sliding plate to slide to a covering position for covering a light-transmitting area or expose out of a reset position of the light-transmitting area through the crank and the connecting rod; the light-transmitting area is arranged on the bottom part of the trough; the printing platform is located right above the light-transmitting area; and a light produced by the projector penetrates through the light-transmitting area so as to be irradiated into the material cavity. The precipitation of the photocuring liquid is prevented, the mechanical property and the printing accuracy of a ceramic product are ensured, and the normal service life of the projector is ensured.

Description

technical field [0001] The invention relates to a field related to 3D printing, in particular to a bottom-exposure ceramic light-curing molding machine. Background technique [0002] As we all know, stereolithography 3D printers are widely used in various industries. Among them, the existing light-curing 3D printers mainly use photosensitive resin as consumables, and the ultraviolet rays or other light sources generated by the projector in the light-curing 3D printer are irradiated onto the printing platform sunk into the trough, so that the printing platform is cured layer by layer. The layer is cured by light, and finally a complete 3D model is obtained. Since the products printed by light-curing 3D printers can match the durable plastic parts of injection molding in terms of accuracy, material properties, details and surface finish, light-curing 3D printers are becoming more and more popular. [0003] Among them, for ceramic resins that are mainly used in dentistry, ort...

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Problems solved by technology

[0003] Among them, for ceramic resins that are mainly used in dentistry, orthopedics, and micro-sensors, since ceramic resins are resin materials that are easy to precipitate, the light-curable liquid in the trough is precipitated and the light-curable liquid in the trough is distributed. Unevenness, which in turn makes the uneven distribution of the photo-curing liquid in the printed product, on the one hand, it affects the mechanical properties of the ceramic product, and on the other hand, it affects the printing quality of the ceramic product; at the same time, the photo-curing liquid is cured layer by layer on the printing platform When using the layer, the controller needs to control the intermittent opening and closing of the projector, and as we all know, the normal life of the projector is shortened due to excessive current at the moment of intermittent opening and closing of the projector, which increases the use cost accordingly

[0004] The application number is 201710364427.3. The bottom-exposure ceramic light-curing 3D printing equipment and its manufacturing method use a circulation pump to drive the light-curing liquid in the material tank to circulate to prevent the light-curing liquid from settling, but it does not solve the problem of intermittent opening and closing of the projector. Will shorten the normal life of the projector

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