3D printing head capable of solving wire drawing phenomenon effectively

Abstract

The invention relates to a 3D printing head capable of solving the wire drawing phenomenon effectively. The 3D printing head comprises a jet nozzle, a heating block, a throat pipe, a heat dissipation mechanism, a feeding mechanism and a drawing-back assembly. The heat dissipation mechanism comprises a first shell and a heat dissipation pipe. The feeding mechanism comprises a second shell, a feeding pipe, a feeding assembly and an adjusting assembly. The feeding assembly comprises a feeding gear and a feeding motor. The adjusting assembly comprises a press roller and a rotary shaft. The drawing-back assembly comprises a drawing-back pipe, first stop chips and second stop chips. According to the 3D printing head capable of solving the wire drawing phenomenon effectively, the distance between the feeing gear and the press roller can be adjusted through the feeding mechanism so as to adapt to raw wires of different dimensions, the heat dissipation mechanism is high in heat dissipation efficiency, molten raw materials can be prevented from flowing back into the heat dissipation pipe, and the phenomenon that when two independent units are printed, wire drawing is caused can be prevented through the drawing-back assembly.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a 3D printing head which effectively solves the phenomenon of wire drawing. Background technique [0002] 3D printing (3DP) is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. [0003] As an emerging technology, many problems are often encountered in the process of 3D printing, including the phenomenon of wire drawing. The so-called wire drawing phenomenon is the wire drawing caused by the leakage of the print head when printing two adjacent independent bodies. Although the existing 3D printer has a retraction mechanism, it cannot completely solve the problem of wire drawing. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a 3D printing head that can effectively solve the wi...

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Problems solved by technology

[0003] As an emerging technology, many problems are often encountered in the process of 3D printing, including the phenomenon of wire drawing. The so-called wire drawing phenomenon is the wire drawing caused by the leakage of the print head when printing two adjacent independent bodies. Although the existing 3D printing has a retraction mechanism, it cannot completely solve the problem of wire drawing

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