An electromagnetic induction heating type 3D printer extrusion nozzle

Abstract

The invention provides an extrusion nozzle of an electromagnetic induction heating type 3D printer. It includes a combined nozzle, a heating device, a cooling device, a feeding device and a protective gas channel; an annular metal block is arranged outside the ceramic nozzle of the combined nozzle; the heating device is an electromagnetic induction heating device, including an electromagnetic induction coil, a coil fixing frame, a support Frame, shielding cover I and shielding cover II, the lead wire of the electromagnetic induction coil is installed on the supporting frame through the coil fixing frame, the electromagnetic induction coil is set outside the annular metal block, the shielding cover I and the shielding cover II are connected and covered on the electromagnetic induction coil Outside, the shielding cover I is installed on the supporting frame. The invention can solve the problem of discontinuous wire output and blockage of the nozzle assembly of metal 3D printers based on FDM technology. The high-temperature heat-resistant and heat-insulating ceramic ring can effectively prevent the heat of the nozzle from being transferred to the throat, preventing premature softening of consumables and electromagnetic induction. Heating increases the melting speed of the wire and the printing efficiency.

Description

technical field [0001] The invention relates to a 3D printing nozzle, in particular to a 3D printer extrusion nozzle using metal wire as a consumable. Background technique [0002] 3D printer, also known as three-dimensional printer, is a machine of rapid prototyping technology. It is a technology based on a digital model file and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. In the past, it was often used to make models in the fields of mold manufacturing and industrial design, and is now gradually being used in the direct manufacture of some products. The 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. [0003] At present, relatively mature metal 3D printing technologies include selected laser sintering techno...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an electromagnetic induction heating type 3D printer extrusion nozzle with high heating efficiency, low energy loss, high filament output efficiency and the ability to solve the problem of easy blockage of the extrusion nozzle

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