System for producing three-dimensional objects

Patent metadata

Field	Value
Publication number	US-11420261-B2
Application number	US-201615762950-A
Country	US
Kind code	B2
Filing date	Sep 22, 2016
Priority date	Sep 25, 2015
Publication date	Aug 23, 2022
Grant date	Aug 23, 2022

Abstract

A system (1) for producing three-dimensional objects (2) by way of the solidification above one another of layers of a building material which can be solidified by means of radiation at the points which correspond to the respective cross section of the object, wherein the system (1) comprises at least one process station (4) which is arranged in a first housing (3) for carrying out the layer-by-layer generative building process in a building container (5), and a handling station (7) in at least one second housing (6) for unpacking produced objects (2) from the building container (5) which can be moved between the at least one process station (4) and the at least one handling station (7), wherein the at least one process station (4) and the at least one handling station (7) are arranged in separate housing units (3, 6).

First claim

The invention claimed is:

1. An additive manufacturing system, comprising:
a tunnel chain, the tunnel chain comprising:
one or more supply openings configured to introduce a plurality of displaceable containers to the tunnel chain;
a plurality of tunnel portions integrated within respective ones of a plurality of housing units, the plurality of housing units comprising one or more process stations and/or one or more handling stations, the plurality of tunnel portions collectively defining a tunnel;
a transport path configured to transport the plurality of displaceable containers through the tunnel defined by the plurality of tunnel portions; and
one or more expansion regions respectively configured to receive from the transport path a respective one of the plurality of displaceable containers while allowing one or more additional displaceable containers to move along the transport path past the respective one of the plurality of displaceable containers positioned in the one or more expansion regions, and to return the respective one of the plurality of displaceable containers to the transport path to follow the one or more additional displaceable containers that moved past the respective one of the plurality of displaceable containers along the transport path, wherein the one or more expansion regions respectively comprise a bypass station and/or an operating position of one of the one or more process stations and/or of one of the one or more handling stations;
wherein at least one of the plurality of housing units comprises at least one of the one or more expansion regions integrated within the respective one of the plurality of housing units.

2. The system of claim 1 , wherein the one or more process stations and/or the one or more handling stations are configured to perform an additive manufacturing process comprising:
positioning displaceable containers in a container magazine and/or removing displaceable containers from the container magazine;
introducing displaceable containers into the tunnel chain and/or removing displaceable containers from the tunnel chain;
additively manufacturing objects within at least some of the plurality of displaceable containers using selective laser melting and/or selective laser sintering;
unpacking the objects from the displaceable containers used to additively manufacture the objects;
supplying fresh construction material and/or removing excess construction material; and/or
performing service, cleaning, and/or measurements upon the one or more process stations and/or the one or more handling stations.

3. The system of claim 1 , wherein respective ones of the one or more displaceable containers received in the one or more expansion regions are selected from the group consisting of: a construction container, a metering container, an overflow container, a transport module, a service module container, a milling heat module container, a cleaning module container, and a measurement module container.

4. The system of claim 1 , comprising:
one or more tunnel connection elements respectively coupled to one or more of the supply openings and/or respectively disposed between adjacent ones of the plurality of housing units, wherein the tunnel defined by the plurality of tunnel portions is further defined by the one or more tunnel connection elements.

5. The system of claim 4 , wherein respective ones of the one or more tunnel connection elements are flange-mounted to a corresponding one of the one or more supply openings and/or to a corresponding one of the plurality of housing units.

6. The system of claim 4 , wherein respective ones of the one or more tunnel connection elements are selected from the group consisting of: a linear tunnel connection element, a wedge tunnel connection element, a flexible tunnel connection element, a branching tunnel connection element, and a reversal station tunnel connection element.

7. The system of claim 4 , wherein at least one of the one or more tunnel connection elements comprises at least one of the one or more expansion regions.

8. The system of claim 1 , comprising:
an inerted space operably coupled to the tunnel chain.

9. The system of claim 8 , wherein the inerted space is configured to inertize displaceable containers to be introduced into the tunnel chain and/or to unpack components having been additively manufactured in a displaceable container, the displaceable container having been transported into the inerted space via the tunnel chain.

10. The system of claim 9 , wherein the inerted space comprises a robot configured to carry out preparatory operating steps and/or unpacking operating steps.

11. The system of claim 1 , comprising:
one or more container magazines configured to hold a plurality of displaceable containers to be introduced into the tunnel chain and/or having been removed from the tunnel chain.

12. The system of claim 1 , respective ones of the one or more expansion regions are disposed laterally and/or vertically adjacent to a corresponding one of the plurality of tunnel portions.

13. The system of claim 1 , wherein at least one of the plurality of housing units comprises at least one of the one or more expansion regions disposed above a corresponding one of the plurality of tunnel portions, wherein the at least one of the one or more expansion regions is configured to suspend above the corresponding one of the plurality of tunnel portions: a service module container, a milling head module container, a cleaning module container, and/or a measurement module container.

14. The system of claim 1 , wherein the tunnel chain comprises an inlet, and an outlet and/or one or more closed ends, and wherein the tunnel chain is configured to maintain a protective atmosphere comprising an inert gas.

15. The system of claim 1 , wherein the transport path comprises a linear transport path and/or a non-linear transport path.

16. The system of claim 1 , wherein the tunnel chain comprises a plurality of transport paths.

17. The system of claim 1 , wherein the tunnel chain comprises:
guiding elements configured to guide the plurality of displaceable containers along the transport path and/or between the transport path and the one or more expansion regions.

18. The system of claim 1 , wherein the tunnel chain comprises:
a drive mechanism configured to move respective ones of the plurality of displaceable containers along the transport path and/or between the transport path and the one or more expansion regions; and/or
a controller configured to control movements of respective ones of the plurality of displaceable containers along the transport path and/or between the transport path and the one or more expansion regions.

19. The system of claim 1 , wherein the plurality of displaceable containers respectively comprise a self-drive mechanism, and wherein the plurality of displaceable containers are movable through the transport path and/or between the transport path and the one or more expansion regions by the respective self-drive mechanism.

20. A method of operating an additive manufacturing system, the method comprising:
moving a plurality of displaceable containers through a tunnel chain, wherein the tunnel chain comprises:
one or more supply openings configured to introduce the plurality of displaceable containers to the tunnel chain;
a plurality of tunnel portions integrated within respective ones of a plurality of housing units, the plurality of housing units comprising one or more process stations and/or one or more handling

Assignees

• Cl Schutzrechtsverwaltungs Gmbh
• Concept Laser Gmbh

Inventors

• Herzog Frank
• Bechmann Florian
• Zeulner Fabian
• Stammberger Jens
• Diller Christian
• Hetzel Ralf

Classifications

• B29C64/153 Primary

  using layers of powder being selectively joined, e.g. by selective laser sintering or melting · CPC title

• B22F12/82

  Combination of additive manufacturing apparatus or devices with other processing apparatus or devices · CPC title

• B22F12/57

  Metering means · CPC title

• B22F12/38

  Housings, e.g. machine housings · CPC title

• B22F10/77

  of gas · CPC title