Anti-interference spray head applied to five-axis low-melting-point alloy 3D printer

Abstract

The invention discloses an anti-interference spray head applied to a five-axis low-melting-point alloy 3D printer, and belongs to the field of 3D printing. The anti-interference spray head comprises aspray head rack, a wire feeding assembly and a needle tube assembly, wherein the top of the spray head rack is mounted on the X axis and the Y axis of the 3D printer through linear bearings, so thatthe whole anti-interference spray head can move along the X axis or the Y axis of the 3D printer; the wire feeding assembly is mounted on the side wall of the spray head rack, a wire feeding gear is controlled by a motor to rotate, and the wire feeding assembly is matched with a wire rolling wheel to drive a metal wire to vertically move downwards between the wire rolling wheel and the wire feeding gear; and the needle tube assembly is fixed in a through hole formed in the bottom surface of the spray head rack, air tube openings are formed in the two opposite sides of the peripheral wall of aneedle tube, and the needle tube communicates with an external air tube through an air tube connector, so that the spraying flow of low-melting-point alloy is controlled through the air flow input andoutput by the air tube. Due to the fact that a needle head is long and thin, the occupied space is small, and interference with parts is avoided; and the spraying flow of molten metal is controlled by adjusting the flow of the air flowing in and out and the speed of the metal wire.

Description

technical field [0001] The invention belongs to the field of 3D printing, and in particular relates to an anti-interference nozzle applied to a five-axis low-melting point alloy 3D printer. Background technique [0002] The nozzle is one of the core components of the 3D printer, and its structure affects the molding efficiency and molding accuracy. At present, most 3D printer nozzles are developed for 3-coordinate FDM 3D printers that use plastic as consumables. When the 3-coordinate 3D printer is improved to a 5-coordinate 3D printer, and low-melting-point alloys are used as printing consumables, some new problems will appear in the molding process, such as the workpiece is easy to interfere with the nozzle, and the spraying flow of low-melting-point alloys is difficult to control. These difficulties have put forward new requirements for 3D printer nozzles. [0003] Diao Huaidong of Zhejiang University designed a new type of nozzle in "Five-axis Fused Deposition Modeling ...

AI Technical Summary

Problems solved by technology

[0005] In order to avoid the deficiencies of the existing technology, the present invention proposes an anti-interference nozzle applied to a five-axis low-melting-point alloy 3D printer, which overcomes the fact that the nozzle of a 5-axis low-melting-point alloy 3D printer easily interferes with the workpiece, cannot continuously spray, and the spraying flow rate cannot be achieved. control problem

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