3D printing equipment and gas circulating device thereof

Abstract

The invention discloses 3D printing equipment and a gas circulating device thereof. The gas circulating device comprises a gas inlet system, a gas outlet system, and a gas flow loop, wherein the gas inlet system comprises a first gas inlet structure and a second gas inlet structure, the first gas inlet structure is arranged on the first side surface of a forming room, and a gas inlet faces towardsthe first gas inlet structure of a forming container, and the second gas inlet structure is formed on the first side surface of the forming room, and is positioned above the first gas inlet structure; the gas outlet system comprises at least one gas outlet structure which is arranged on the second side surface of the forming room; and the gas flow loop comprises a circulating pipeline which is communicated with the first and second gas inlet structures and the at least one gas outlet structure, and a purifying system arranged in the circulating pipeline. The gas circulating device can be utilized, so that a forming material in the forming room and a forming object are in protective atmosphere; and moreover, gas provided by the first gas inlet structure can be directly act on the forming container for cleaning a forming piece for forming in the forming container, so that a very good forming effect of the forming piece is guaranteed.

Description

technical field [0001] This application relates to the field of 3D printing, in particular to a 3D printing device and a gas circulation device thereof. Background technique [0002] 3D printing technology (also known as: three-dimensional printing technology) is a cumulative manufacturing technology for rapid prototyping of three-dimensional objects. way to construct objects. The machine that uses 3D printing technology to print products can be called 3D printing equipment. Its principle is to put data and raw materials into the 3D printing equipment, and the machine will manufacture products layer by layer according to the program. 3D printing equipment is widely used in molds, customized products, medical fixtures, prostheses and other fields due to its high molding precision. [0003] In the prior art, some 3D printing equipment of 3D printing technology, such as Selective Laser Sintering (Selective Laser Sintering, referred to as SLS), Selective Laser Melting (Selecti...

AI Technical Summary

Problems solved by technology

In the high temperature environment for a long time, 3D printing equipment will have some poor printing phenomena during the printing process, for example, poor heat dissipation of parts will cause performance degradation

In addition, taking the aforementioned 3D printing technologies such as SLS, SLM, and EBM as examples, the molding material melts after being stimulated, and some of the molding materials will rise or volatilize under high temperature conditions, which may contaminate other parts or affect the printing effect

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