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Three-dimensional (3D) printing device and method for improving workpiece molding quality

A 3D printing and molding quality technology, applied in the field of additive manufacturing, can solve the problems of workpiece warping, blackening, surface spheroidization, etc., achieve the effect of smooth and uniform airflow, improvement of cracking and uniformity of organization, and ensure the effect of atmosphere environment

Active Publication Date: 2019-07-19
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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Problems solved by technology

[0003] The technical solution of the present invention is to overcome the deficiencies of the prior art, provide a 3D printing device and method for improving the quality of workpiece molding, and solve the low-quality printing problems such as surface spherification, blackening, and workpiece warping that are prone to occur in current products. question

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  • Three-dimensional (3D) printing device and method for improving workpiece molding quality

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings and examples.

[0036] The scheme of the present invention is simple, practical and reliable, and adopts the advection nozzle, which can realize the uniform passage of airflow in a large area; the invention designs an atmosphere heating box, which can heat the atmosphere in the vacuum box and the wall plate of the processing cylinder, and at the same time, the atmosphere is heated when the workpiece is cooling The box can set a series of cooling temperature values, which reduces the cooling gradient; the blower used is equipped with a corresponding frequency converter, which can realize the free adjustment of the wind speed in the process test; the multi-stage impurity filtering device and the water and oxygen purification device are used to ensure the printing required. atmosphere environment.

[0037] figure 1 , 2, 3 is a general diagram of a 3D printing device that...

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Abstract

The invention relates to three-dimensional (3D) printing device and method for improving the workpiece molding quality. The 3D printing device comprises a tank, a filter system, an air blower, an airblowing device, a powder cylinder, a processing cylinder and an atmosphere heating tank, wherein the tank is a vacuum tank; the air blower arranged on the outer part of the vacuum tank blows air intothe vacuum tank; the atmosphere heating tank is used for heating the atmosphere around the processing cylinder, so that constant hot air blowing is maintained in a processing area during the processing stage, and a workpiece is ensured to be cooled according to a preset cooling gradient in the cooling stage; and in the whole printing process, the atmosphere around the processing cylinder is blownout through the air blowing device and is then filtered through the filter system.

Description

technical field [0001] The invention relates to the field of additive manufacturing, in particular to an atmosphere circulation integration device and method for 3D printing equipment. Background technique [0002] In the field of 3D printing, in the process of process testing, it is often encountered that the splash generated by sintering powder falls in the forming area, the atmosphere blown out by the blowing device contains fine impurities that have not been completely filtered, the water and oxygen content exceeds the standard, and the cooling gradient is too large. The problems will have a great impact on whether the parts can be formed with high quality, and in severe cases, they will directly lead to the failure of the parts to be formed. At present, most of the 3D printing equipment on the market have been equipped with a blower device, but the design of the air path is often relatively simple, the nozzle wind speed is uneven, and the simple design often causes the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/371B29C64/20B33Y40/00B33Y30/00
CPCB33Y30/00B33Y40/00B29C64/20B29C64/371
Inventor 王飞李鹏柳玉文孙靖丘廉芳杜洋杨洋赵维刚
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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