Material conveying and spraying device and method for 3D printing

Abstract

The invention belongs to the technical field of 3D printing, and particularly relates to a material conveying and spraying device and method for 3D printing, the material conveying and spraying device comprises a heater, a throat pipe, a cooling fin, a nozzle and a gasket, and a threaded hole is formed in the vertical direction; the lower end of the throat pipe is in threaded connection with the upper end of the threaded hole; the radiating fins are arranged on the outer side of the throat pipe in a sleeving manner and are fixedly connected with the throat pipe through screws; the nozzle is in threaded connection with the lower end of the threaded hole; in order to solve the technical problems that in the printing process of an existing 3D printer, a nozzle is prone to being blocked by materials, consumables in the nozzle are difficult to clean up, impurities contained in the consumables can be coked on the inner wall of the nozzle, and secondary blocking is prone to being caused, a gasket is arranged in the material conveying and jetting device for 3D printing; and the consumable or impurities on the consumable are bonded on the gasket, so that the inner surface of the gasket is convenient to clean, the consumable can smoothly pass through the nozzle, the normal work of the 3D printer is ensured, and the product forming quality is ensured.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and specifically relates to a feeding and ejecting device and method for 3D printing. Background technique [0002] 3D printing (3DP) is a kind of rapid prototyping technology, also known as additive manufacturing. It is based on digital model files, using powdered metal or plastic and other bondable materials to construct by layer-by-layer printing. technology of objects. [0003] During the printing process of existing 3D printers, the nozzles are prone to clogging, which affects the printing process and even affects the quality of the formed product. After the nozzles are clogged, they need to be replaced and the replaced nozzles should be cleaned. However, the inner diameter of the nozzles is relatively small. It is small, and the inside is conical, and the diameters of each section are different, so it is difficult to clean. Usually, it is heated to make the internal printing consumable...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies of the prior art, the present invention proposes a 3D printing material injection device and method; thereby solving the problem that the existing 3D printers are prone to clogging the nozzles during the printing process, and it is difficult to clean the consumables in the nozzles. Clean, and the impurities contained in the consumables will coke on the inner wall of the nozzle, which will easily cause secondary blockage and affect the use of the 3D printer

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