Electromagnetic induction heating 3D printing extrusion head and method

Abstract

The invention relates to an electromagnetic induction heating 3D printing extrusion head and method. The electromagnetic induction heating 3D printing extrusion head comprises a bracket, an electromagnetic induction heating coil and a set of wire feeding mechanism with straightening function. The electromagnetic induction heating 3D printing extrusion head and method can be compatible with both metal and non-metal wires. The electromagnetic induction heating head and the wire feeding mechanism are mounted on the bracket, and the wire feeding mechanism feeds wires into the electromagnetic induction heating coil of a heating head. The electromagnetic induction heating coil is coupled with an electrical pulse generator, and pulsed current in the electromagnetic induction heating coil generates an alternating magnetic field and current in the metal wires or metal linings. The metal wires can be heated directly to melt. For the non-metal wires, the metal linings needs to be added to the coil, and the non-metal wires are heated to melt through the metal linings. The bracket is coupled with a motion mechanism of a 3D printer to achieve three-dimensional positioning relative to a model, and molten materials is smeared at the designated position to realize 3D printing. According to the electromagnetic induction heating 3D printing extrusion head and method, compatible 3D printing of themetal and non-metal wires is realized.

Description

technical field [0001] The invention relates to a 3D printing extrusion head and a method, in particular to an electromagnetic induction heating 3D printing extrusion head and a method. Background technique [0002] The current fused deposition 3D printing technology mainly uses solid filaments, which are deposited layer by layer on the printing platform after being heated and melted, and solidified layer by layer until the model is completed as a whole. The specific implementation mainly includes the following methods. [0003] 1. For the existing micro-beam plasma arc melting technology for metal wire, its disadvantage is that it is easy to cause metal oxidation, requires high-pressure protective gas support, and the safety of the supporting system is low. [0004] 2. For non-metallic wire materials, resistance heating technology is mainly used. This technology heats the metal block through a resistance heater, and then heats the wire passing through the metal block to mel...

AI Technical Summary

Problems solved by technology

Its disadvantage is that it is limited by the heat conduction speed of the metal block, and its temperature control accuracy is not high

At the same time, the resistance of the wire passing through the metal block will reduce the control accuracy of the wire output

Resulting in reduced final model accuracy and strength

[0005] At present, there is no 3D printing extrusion head and method that can be compatible with metal and non-metal wires

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