A washable multi-material 3D printer nozzle

Abstract

The invention discloses a washable multi-material 3D printer nozzle, which comprises a nozzle housing, a material pipe assembly installed in the inner cavity of the nozzle housing, a rotating assembly and a heating device; the nozzle housing includes an upper end cover and is adapted to the upper end cover The lower shell, the upper end cover is provided with a feed pipe and a liquid gas pipe, the bottom of the lower shell is respectively provided with a discharge port and a liquid discharge port at the relative positions of the feed pipe and the liquid gas pipe, and the discharge port extends downward to form a The nozzle and the liquid discharge port extend outward to form a liquid discharge pipe; the material pipe assembly includes several material guide tubes, which are evenly arranged along the circumference and connected with the rotating assembly; the heating device is sleeved on the lower part of the material guide tube and connected with the Rotary components are connected. The nozzle drives the heating block and the guide tube to rotate by setting the rotating component, so that the guide tube is respectively located at the printing position and the cleaning position, and the cleaning of the guide tube is completed while the printing material is replaced, which effectively solves the problem of nozzle blockage. , to ensure printing accuracy and high printing efficiency.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and particularly relates to a washable multi-material 3D printer nozzle. Background technique [0002] 3D printing technology is based on digital model files to process shaped workpieces by layer-by-layer printing. The birth of this technology shortens the design and development cycle of new products and brings great convenience to the field of design and manufacturing. There are many existing 3D printing technologies, including extrusion molding (fused deposition FDM and liquid direct writing LDW), photocuring molding (laser scanning SLA, projection curing DLP or polymer jet PolyJet) and powder molding (Laser sintering SLS / SLM or inkjet bonding 3DP), among which extrusion 3D printing is the earliest and most widely used one. [0003] In the traditional extrusion 3D printing technology, the single-nozzle design is mainly used, and the technology is relatively mature. With the development of...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the above problems and provide a washable multi-material 3D printer nozzle. The nozzle drives the heating device and the material pipe assembly to rotate by setting the rotating assembly, so that the material guide pipe is respectively located at the printing position and the cleaning position. While replacing the printing material, the cleaning of the material guide tube is completed, which effectively solves the problem of nozzle clogging, not only ensures the printing accuracy and printing quality, but also improves the printing efficiency

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