A multifunctional nozzle of a fused deposition 3D printer

Abstract

The invention discloses a multifunctional nozzle of a fused deposition type 3D printer, which comprises a nozzle body, on which a high-pressure gas conveying device, a gas conveying layer and a gas guiding device are arranged; the high-pressure gas conveying device passes through the gas conveying layer It communicates with the air guide device, the air guide device is arranged at the nozzle mouth of the nozzle body, the inner ring of the air guide device is provided with three ring-type air passages, and the tails of the three ring-type air passages are connected, and the connecting parts are provided with a swing Air valve, the swing air valve is used to switch the on-off of different air passages and the high-pressure gas delivery device; the three annular air passages communicate with the nozzle openings respectively. When the nozzle completes the work of a printing area, stops spraying and is about to move into the next printing area, the middle air channel and the lower air channel spray air at the same time, blocking the molten raw material that is about to slide down at the nozzle mouth and making the printing that has not been completely solidified The layer is fused with the bottom printing layer; when the printing work is finished, the upper air channel continues to spray air to clean the nozzle body.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a multifunctional nozzle of a fused deposition 3D printer. Background technique [0002] At present, 3D printing, as a rapid prototyping technology, is developing rapidly and its application is becoming wider and wider. 3D printing technology can be used in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering and many other fields. It is often used in mold manufacturing, industrial design and other fields to make models or for direct manufacturing of some products, which means that this technology is becoming popular. 3D printing has brought about a worldwide manufacturing revolution, making companies no longer consider production process issues when producing components, and any complex shape design can be realized by 3D print...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies of the prior art, the present invention provides a multifunctional nozzle of a fused deposition 3D printer, which can effectively solve the problem of nozzle wire drawing of an FDM 3D printer, the problem of raw material clogging the nozzle and the surface step effect existing on the printed model

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