Cover arrangements for machines for manufacturing three-dimensional components

Patent metadata

Field	Value
Publication number	US-11660675-B2
Application number	US-202016862920-A
Country	US
Kind code	B2
Filing date	Apr 30, 2020
Priority date	Nov 3, 2017
Publication date	May 30, 2023
Grant date	May 30, 2023

Abstract

Cover assemblies for machines are disclosed, as well as machines and methods for producing three-dimensional components by selectively solidifying a material by a beam acting on the material, including a build cylinder cover that sealingly closes an opening of the build cylinder for changing of the build cylinder, and including a process chamber cover associated with the build cylinder cover, which are detachably connected to one another via an interface, wherein the build cylinder cover and the process chamber cover are formed as a single handling unit for changing the build cylinder.

First claim

What is claimed is:

1. A cover arrangement for a machine for manufacturing a three-dimensional component by selectively solidifying a powdery building material by a beam acting on the building material, the cover arrangement comprising
a construction cylinder cover, which closes and seals an opening of a construction cylinder for exchanging the construction cylinder;
a process chamber cover attached to the construction cylinder cover; and
an interface, wherein the interface comprises at least one connecting element that centrally aligns and detachably connects the process chamber cover with the construction cylinder cover;
wherein, when connected to each other, the construction cylinder cover and the process chamber cover together form a single unit when positioning for exchanging the construction cylinder, wherein the process chamber cover and the construction cylinder cover are transported in a moveable carrier, wherein the moveable carrier comprises a connection point, which is connectable to a gripper of an application and levelling device, and wherein the moveable carrier is positionable by the application and levelling device relative to the construction cylinder to be exchanged.

2. The cover arrangement of claim 1 , wherein the process chamber cover and the construction cylinder cover are aligned centrally with each other, by at least two complementary connecting elements.

3. The cover arrangement of claim 1 , wherein the process chamber cover lies on top of the construction cylinder cover.

4. The cover arrangement of claim 1 , wherein the construction cylinder cover has a peripheral surface which is closed by a radially outwardly extending annular collar and a peripheral groove is provided above the annular collar.

5. The cover arrangement of claim 1 , wherein the process chamber cover has a peripheral sealing surface, to which a shoulder connects.

6. The cover arrangement of claim 1 , wherein the moveable carrier further comprises a chassis by which the construction cylinder cover and the process chamber cover are movable on a working surface of a process chamber.

7. The cover arrangement of claim 1 , wherein the carrier further comprises a base plate with a U-shaped, open-edge recess, by which the construction cylinder cover with a peripheral groove on the base plate is detachably received in the U-shaped, open-edge recess and is movable out of the latter.

8. The cover arrangement of claim 1 , wherein a gripper is arranged to engage both the process chamber cover and the construction cylinder cover.

9. The cover arrangement of claim 8 , wherein the gripper comprises at least two grippers, each comprising at least one gripping element, which engage in a peripheral groove of the construction cylinder cover.

10. The cover arrangement of claim 9 , wherein the at least two grippers are controllable by a common drive from a gripping position into a rest position.

11. The cover arrangement of claim 9 , wherein the gripping elements of the at least two grippers are controllable by a rotary movement for engaging in a peripheral groove of the construction cylinder cover by a drive.

12. The cover arrangement of claim 8 , wherein the gripper is movable in a process chamber parallel to a working plane, is changeable in height, or both.

13. A machine for manufacturing a three-dimensional component by selective solidification of a building material applied in layers by a beam acting on the building material, comprising
at least one process chamber, which has at least one working surface aligned in an X-Y plane, to which at least one construction cylinder is exchangeably attached, in which a substrate plate is controlled in a moveable manner, and on which the three-dimensional component is produced;
a beam source for generating the beam and at least one beam deflection device by which the beam is deflected onto the building material to be consolidated in the at least one construction cylinder;
an application and levelling device comprising a gripper that is movable above the at least one working surface for applying the building material relative to the at least one construction cylinder; and
a lifting device that moves the at least one construction cylinder at least in a working plane of the working surface to an opening of the at least one process chamber and comprises a piston, which moveably controls the substrate plate in the at least one construction cylinder,
wherein a cover arrangement of claim 1 is provided in the at least one process chamber.

14. The machine of claim 13 , wherein the cover arrangement in the at least one process chamber is movable with the application and levelling device to the opening of the at least one process chamber.

15. The machine of claim 13 , wherein the cover arrangement comprises a construction cylinder lid for closing an opening of the construction cylinder and a process chamber cover for closing the opening in the at least one working surface of the at least one process chamber.

16. The machine of claim 13 , wherein a lifting seal is provided below the at least one working surface and assigned to the at least one opening of the process chamber, wherein the lifting seal is pressurized and engages with a wall of the construction cylinder or the at least one process chamber cover in a sealing manner.

17. The machine of claim 13 , wherein a connection point of the cover arrangement is provided in a common longitudinal central axis of at least two openings in the at least one process chamber for arranging construction cylinders.

Assignees

• Trumpf Laser—und Systemtechnik GmbH
• Trumpf Laser & Systemtechnik Gmbh

Inventors

• Huber Uwe
• Pieger Markus
• Ullmann Björn

Classifications

• B22F12/49

  Scanners · CPC title

• B22F12/38 Primary

  Housings, e.g. machine housings · CPC title

• B22F10/28

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title

• B33Y30/00 Primary

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title

• B29C64/255

  Enclosures for the building material, e.g. powder containers · CPC title