Device for cleaning three-dimensional components made of adhesive powder particles, said components being printed in a powder bed

US12275063B2 · kind B2 · utility

Assignee

• ACTECH GmbH · DE

Inventors

• Jens Fischer · Pausa, DE
• Norbert Demarczyk · Lauterecken, DE
• Hana Kästner Maxová · Teplice, CZ

Key dates

• Filing date: Mar 23, 2021
• Grant date: Apr 15, 2025
• Expiry date: Jan 3, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The disclosure provides for cleaning three-dimensional (3D) components printed in a powder bed from adhering powder particles. The 3D-printed components are cleaned with a negative pressure-induced volumetric flow. The 3D-printed components are first removed from the powder bed after their manufacture, then positioned on a feed device and moved together with the feed device into a pressure-tight sealable chamber. In the interior of the chamber negative pressure is subsequently built up and a fluid volumetric flow is applied to the 3D-printed component to be cleaned which results in the powder particles being detached from the 3D-printed component. The powder particles are removed from the sealed chamber in a pressure tight manner via at least one channel conduit which is subjected to negative pressure and are fed to a separation device. The chamber is subsequently released of pressure and then opened for removal of the cleaned 3D-printed component.