A vacuum-sealed 3D printing device

Abstract

The invention discloses a vacuum-sealed 3D printing device, which comprises a frame-shaped frame body and a flat powder feeding device. A transverse beam is fixed in the middle of the frame-shaped frame body. The box is fixed, the top surface of the box has an observation hole, the top surface of the box is fixed with a quartz glass block, the quartz glass block covers the observation hole, the side wall of the box is connected with an air inlet pipe, and the air inlet pipe is connected to the The side wall through holes on the side wall are connected, the bottom surface of the edge of the powder laying bottom plate is connected with an exhaust pipe, and the edge of the powder laying bottom plate has a bottom through hole; the flat laying powder feeding device is in the box; the flat laying The powder feeding device includes a flat frame and a powder storage tank. The flat frame is a rectangular frame. The outer walls of the left and right side plates of the flat frame are fixed with scrapers by bolts, which can ensure that the air will not enter the vacuum box. In this way, the quality of the 3D printed product in the vacuum box is guaranteed to be high, and the toothed groove of the conveying roller is used for conveying, and the conveying precision is high.

Description

[0001] Technical field: [0002] The invention relates to the technical field of 3D printing equipment, and more specifically relates to a vacuum-sealed 3D printing device. [0003] Background technique: [0004] In the existing 3D printing equipment, the printing box is generally an ordinary box, and a powder spreading device is installed in the box, and the powder is poured into the box to spread the powder before 3D printing. The outside air is connected, so that during laser printing, the impurities in the outside air will affect the printing effect and affect the strength and quality of the formed product. [0005] Moreover, in the existing 3D printers, the rolling of the powder is only carried out by rolling rollers, and the rolling is only to prevent the powder from protruding, so as to compact it. When compacting, when the powder is too concentrated in some places , it cannot be further flattened, and its flattening effect is limited. [0006] Moreover, the existing p...

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Problems solved by technology

[0004] In the existing 3D printing equipment, the printing box is generally an ordinary box, and a powder spreading device is installed in the box, and the powder is poured into the box to spread the powder before 3D printing. The outside air is connected, so that during laser printing, the impurities in the outside air will affect the printing effect and affect the strength and quality of the formed product

[0005] Moreover, in the existing 3D printers, the rolling of the powder is only carried out by rolling rollers, and the rolling is only to prevent the powder from protruding, so as to compact it. When compacting, when the powder is too concentrated in some places , it cannot be further flattened, and its flattening effect is limited

[0006] Moreover, the existing powder feeding mechanism generally uses the rotation of the screw to realize the delivery, and because the nano-scale powder is easy to stick inside the delivery tube, it affects the delivery, and it is easy to affect the delivery accuracy

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