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Gas flow inside an additive manufacturing facility

A technology of additive manufacturing and gas flow, applied in the direction of manufacturing auxiliary devices, processing and manufacturing, manufacturing tools, etc., can solve problems affecting laser performance and other issues

Active Publication Date: 2020-03-17
TRUMPF SISMA SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Deposits e.g. can affect laser performance

Method used

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  • Gas flow inside an additive manufacturing facility
  • Gas flow inside an additive manufacturing facility
  • Gas flow inside an additive manufacturing facility

Examples

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Embodiment Construction

[0020] The following is a detailed description of exemplary embodiments of the present invention. The exemplary embodiments described therein and shown in the drawings are intended to teach the principles of the invention and enable one of ordinary skill in the art to operate and use the invention in various environments and for various applications. Therefore, these exemplary embodiments are not intended to limit the scope of patent protection, nor should they be regarded as limiting the scope of patent protection. Rather, the scope of patent protection shall be defined by the appended claims.

[0021] The present invention is based, in part, on the realization that by providing airflow, either front to back or back to front across build platform segment portions, smoke can be effectively removed and not diffused during the manufacturing process. In particular to generate such a gas flow, a corresponding gas flow system can be at least partially integrated into the door of t...

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Abstract

A device (1) for the additive manufacturing of powder materials into three-dimensional objects, comprising a body (11) providing an object forming chamber (13) and within a front wall (15) providing access to the The target forms the opening (17) of the chamber (13). A work surface (21) delimits a target formation chamber (13) and includes a build platform section (23A) for fabricating a three-dimensional target thereon. The device (1) further comprises a door (31) provided at the front wall (15) and positionable to seal the opening (17) in the closed state and to provide access to the target forming chamber (13) in the open state. ) pathway. The apparatus (1) further comprises a gas flow system (41) for providing gas flow (42) across the build platform section (23A). The gas flow system (41) includes a first body section (41A) extending within the body (11) and a door section (41B) that is part of the door (31), wherein the door section (41B) comprising a first opening structure (45A) arranged to release gas to or from above the build platform section (23A) in the closed state of the door Receive gas.

Description

technical field [0001] The present invention relates generally to additive manufacturing devices, and more particularly to the use of inert gas flow to control fumes during additive manufacturing. Background technique [0002] Additive manufacturing, such as selective laser sintering, selective laser melting, etc., is usually performed in a gas-tight object formation chamber. In this chamber, powder materials, such as metal powders, ceramic powders, are irradiated with electromagnetic radiation, such as laser light. Thus, a thin layer of powder is placed on the build platform section within the chamber, which forms the base of the three-dimensional object. In step production, for example, three-dimensional objects are manufactured layer by layer. The brush structure is used between multiple steps to redistribute the powder on top of the already partially fabricated material to form the next layer. [0003] An exemplary device for additive manufacturing is disclosed in EP ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B29C64/153B29C64/20B33Y30/00
CPCB33Y30/00B22F10/00B22F10/77B22F12/41B22F12/38B22F12/70B22F10/32B22F10/28B29C64/153B29C64/25B29C64/371Y02P10/25B33Y10/00B28B1/001
Inventor F·里瓦S·卡纳格利亚
Owner TRUMPF SISMA SRL