3D printing sprayer suitable for concrete and 3D printer

Abstract

The invention discloses a 3D printing nozzle suitable for concrete, which comprises a feeding pipe, a motor installed at the top of the feeding pipe, a screw stirring shaft arranged in the feeding pipe, a nozzle arranged at the bottom of the feeding pipe, connected with the feeding pipe and used for A dry material delivery pipe for delivering concrete dry material into the feeding pipe, and a liquid material delivery pipe for delivering concrete liquid material into the feeding pipe, and the screw stirring shaft is driven by a motor and used for mixing and stirring the concrete and extruding it from the nozzle; The concrete is divided into dry material and liquid material, and the two are mixed at the inlet of the feeding pipe. The motor drives the screw stirring shaft to stir in the feeding pipe, so that the concrete is evenly mixed during the screw pushing process, which can reduce the concrete in the feeding process. The time in the tube ensures that the concrete will not block the tube, and the uniformly mixed concrete is extruded through the nozzle under the push of the screw stirring shaft, and is superimposed and printed according to the construction drawings. The invention also discloses a 3D printer comprising the above-mentioned 3D printing nozzle.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a 3D printing nozzle suitable for concrete. In addition, the present invention also relates to a 3D printer comprising the above-mentioned 3D printing nozzle. Background technique [0002] A 3D printer is a computer-controlled machine that accumulates various "printing materials" layer by layer to turn design drawings into real objects. 3D printing technology is a breakthrough technology. [0003] 3D printed materials need to reach the required strength within a certain period of time, otherwise there will be a large plastic deformation or even collapse. The current 3D printing technology generally uses ABS, PLA, photosensitive resin and other materials to print objects, and very few use special materials such as metal for 3D printing. However, the concrete on the market is generally very fluid, and it is difficult to harden and form quickly. If you use less fluid concrete,...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a 3D printing nozzle suitable for concrete, whose structural design can solve the problem of concrete hardening and plugging in the process of 3D printing

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