Spray head device of 3D printer

Abstract

The invention discloses a spray head device of a 3D printer. The spray head device comprises a spray head shell for accommodating a printing material, wherein a power device is arranged on the top ofthe spray head shell, the output end of the power device is connected to a stirring device for stirring the printing material and extruding the printing material, a controlled one-way valve is arranged in the bottom of the spray head shell, a gas extraction device for extracting gas is further arranged on the top of the spray head shell, and heating devices for melting the printing material are arranged around the spray head shell. The spray head device disclosed by the invention can achieve the functions of absorbing the printing material back, removing dissolved gas of the printing materialand extruding the printing material uniformly after printing, so that the printing effect is enhanced.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a nozzle device of a 3D printer. Background technique [0002] 3D printing is a new type of processing technology that is developing rapidly today, especially suitable for various personalized processing and single-piece small-batch processing. 3D printing technology is generally realized by the principle of layered printing, that is, the 3D model to be printed is decomposed into thin slices, and by controlling the plane positioning system, one thin slice is printed each time, and then the height is increased by a step, and the next thin slice is printed, and the next thin slice is printed through repeated printing. Flakes, the final 3D shape formed. [0003] Common 3D printing technologies include the following: laser sintering, laser sensitive technology, fused filament manufacturing, etc. The 3D technology of laser sintering is to melt and shape powder metall...

AI Technical Summary

Problems solved by technology

[0004] In the fusion 3D printer, the nozzle is one of the important components. The speed and uniformity of the nozzle ejecting the printing material directly determine the quality of the printing, and the heated molten printing material is easy to dissolve the gas, thereby forming sand holes and affecting the final printing effect. And after the printing is completed, the printing material is likely to remain at the position of the nozzle, which will affect the next printing. In addition, whether the nozzle can evenly eject the printing material will directly affect the printing effect

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