3D printer nozzle structure

Abstract

The invention discloses a 3D printer nozzle structure, and belongs to the 3D printing technology field. The nozzle comprises a vertically-arranged nozzle body, and a heating sleeve, which is sleeved on the nozzle body, wherein the lower end of the nozzle body stretches out of the heating sleeve. The external surface of the nozzle body and the internal surface of the heating sleeve are both provided with screw threads, and the screw threads cooperate with each other. The top surface of the heating sleeve is provided with heating blind holes which are evenly distributed in the circumferential direction, and a heating element is arranged in each heating blind hole. The external round cover of the heating sleeve is provided with a box, and the internal wall of the box is provided with a thermal insulation layer. The nozzle body is provided with a material hole, and the material hole is composed of an upper reverse-conical hole, a middle cylindrical hole, and a lower normal-conical hole. The lower end of the nozzle body is provided with an extrusion hole that is communicated with the normal-conical hole. Through the provided technical scheme, the heat can be more conveniently transported to the nozzle body, the heat transmission is uniform, and the heating and thermal insulation are stable.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular, to a nozzle structure of a 3D printer. Background technique [0002] 3D printer, also known as 3D printer, is a kind of cumulative manufacturing technology, that is, a machine of rapid prototyping technology. Print layers of adhesive material to create three-dimensional objects. 3D printers are currently used to manufacture products. The technique of constructing objects in a layer-by-layer manner. The principle of the 3D printer is to put data and raw materials into the 3D printer, and the machine will build the product layer by layer according to the program. [0003] The nozzle structure of 3D printers generally has a heating block for heating the filament, but the temperature distribution in the heating block is uneven, resulting in uneven melting of the filament in the nozzle, resulting in lumps, affecting the effect, and some use thermal insulation cotton. Wrap the no...

AI Technical Summary

Problems solved by technology

[0003] The structure of the nozzle of the 3D printer generally has a heating block for heating the filament, but the temperature distribution in the heating block is uneven, resulting in uneven melting of the filament in the nozzle, which appears lumpy and affects the effect, and some use insulation cotton Wrap the nozzle and wrap the high temperature resistant tape on the outside, which will affect the appearance, and if the insulation cotton is not completely wrapped, it will easily cause the temperature to rise slowly and the insulation will be unstable

Images