3D printer coaxial nozzle and 3D printer with the same

Abstract

The invention relates to the 3D printing technology field, and discloses a 3D printer coaxial nozzle and a 3D printer with the same. An outer pipe, an inner pipe and a nozzle are included. The inner pipe is nested in the outer pipe, the nozzle is arranged at a lower end of the outer pipe, and a semiconductor refrigerator is arranged in a first pipe wall of the inner pipe. A nozzle heating device is arranged on a pipe wall of the nozzle, and is electrically connected with a power supply device and a control device. Because the outer pipe and the inner pipe are arranged, different printing materials can be injected into the two pipes at the same time. A semiconductor refrigerator is arranged in a first pipe wall of the inner pipe, and the semiconductor refrigerator has a function of heatingand refrigerating at the same time, and can be used for heating or refrigerating the printing materials in the outer pipe and the inner pipe respectively so as to ensure that the printing materials keep characteristics of the printing materials within a set temperature.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a coaxial nozzle of a 3D printer and a 3D printer having the same. Background technique [0002] 3D printing technology (3D printing), which is a kind of rapid prototyping technology, is a technology based on digital model files, using bondable materials such as powdered metal or plastic, to construct objects by layer-by-layer printing. In the past, it was often used to make models in the fields of mold manufacturing and industrial design, and is now gradually being used in the direct manufacture of some products. In particular, some high-value applications (such as pulp joints or teeth, or some aircraft parts) have already used this technology to print Licheng parts. 3D printing is the same as laser forming technology, which uses layered processing and superimposed molding to complete 3D physical printing. [0003] However, in some 3D printing processes, the two printing materials n...

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Problems solved by technology

[0003] However, in some 3D printing processes, the two printing materials need to be kept relatively independent during the conveying process, and mixed at the nozzle of the printer, especially for some special material printers, a certain temperature needs to be maintained during the conveying process of the printing materials, such as Heating or cooling is required to ensure the characteristics of the material; the existing 3D printer coaxial nozzle does not have a temperature control device, and cannot achieve temperature control of different materials

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