Screening device and titanium alloy powder screening system

Abstract

The invention provides a screening device and a titanium alloy powder screening system and belongs to the technical field of 3D printing powder screening and production. The screening device comprises a feeding assembly, a screening assembly and a vacuum feeding assembly. The screening assembly comprises a screen frame, a screen body and a guide piece. The guide piece is provided with a first opening, a second opening and a guide wall by which a guide channel is defined. The guide piece is mounted on the screen frame. The first opening is configured to receive materials falling off from the screen body. The guide wall is configured to receive materials falling off from the first opening and guide the materials to the second opening. The vacuum feeding assembly is configured to collect the materials screened from the screen body and put the materials to the feeding assembly. In the use process of the screening device, the screened materials falling off from the screen body can be gathered and fall into the next stage of screen to be screened; and the materials do a involute helicoid motion along with the swing of the screening machine, the screening effect is good, the screen body is not likely to be blocked, multiple times of screening can be conducted, and the yield is increased.

Description

technical field [0001] The invention relates to the technical field of 3D printing powder screening production, in particular to a screening device and a titanium alloy powder screening system. Background technique [0002] Selective laser melting (SLM) metal 3D printing technology (Selective laser melting, SLM) uses a precise focus spot to quickly melt the pre-laid layers of metal powder, and can almost directly obtain functional parts with arbitrary shapes and complete metallurgical bonding. The density can reach nearly 100%. It is a rapid prototyping technology with great development prospects, especially in aerospace, medical, automobile, mold and other fields, which has extremely important application prospects. SLM technology uses ultra-fine spherical powder as raw material, usually with a thickness of 30-60 μm (the thinnest powder thickness can reach 20 μm). In order to form parts with uniform density and consistent performance, the requirements for various performan...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a screening device to improve the problem that the traditional powder screening equipment is prone to screen blockage during the screening process, resulting in short service life and low output of the screen.

[0005] The

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