Unpacking system for use in an apparatus for producing three dimensional work pieces

Patent metadata

Field	Value
Publication number	US-10787352-B2
Application number	US-201615345025-A
Country	US
Kind code	B2
Filing date	Nov 7, 2016
Priority date	Nov 6, 2015
Publication date	Sep 29, 2020
Grant date	Sep 29, 2020

Abstract

An unpacking system for use in an apparatus for producing three-dimensional work pieces by irradiating layers of a raw material powder electromagnetic or particle radiation comprises a supporting structure which is configured to support a building chamber arrangement. The building chamber arrangement comprises a building chamber accommodating a carrier, the carrier being configured to receive a three-dimensional work piece produced from a raw material powder by an additive layering process. A lowering mechanism of the unpacking system is configured to apply a driving force to the building chamber so as to lower the building chamber relative to the carrier until a three-dimensional work piece received on the carrier can be removed from the carrier.

First claim

The invention claimed is:

1. An unpacking system for use in an apparatus for producing three-dimensional work pieces by irradiating layers of a raw material powder with electromagnetic or particle radiation, the unpacking system comprising:
a supporting structure which is configured to support a building chamber arrangement, the building chamber arrangement comprising a building chamber accommodating a carrier, the carrier being configured to receive a three-dimensional work piece produced from a raw material powder by an additive layering process, and
a lowering mechanism which is configured to apply a driving force to the building chamber so as to lower the building chamber relative to the carrier until a three-dimensional work piece received on the carrier can be removed from the carrier.

2. The unpacking system according to claim 1 , wherein the lowering mechanism is configured to apply a driving force to the building chamber so as to lower the building chamber relative to the carrier at least until a carrier surface of the carrier which is configured to carry a three-dimensional work piece produced from a raw material powder by an additive layering process is arranged substantially flush with an upper rim of the building chamber.

3. The unpacking system according to claim 1 , wherein the lowering mechanism comprises at least one drive element and a transfer element, the transfer element being connected to the at least one drive element and being configured to transfer the driving force generated by the at least one drive element to the building chamber so as to lower the building chamber relative to the carrier.

4. The unpacking system according to claim 3 , wherein the transfer element is configured to apply a pressing force to an upper rim of the building chamber.

5. An unpacking system for use in an apparatus for producing three-dimensional work pieces by irradiating layers of a raw material powder with electromagnetic or particle radiation, the unpacking system comprising:
a supporting structure which is configured to support a building chamber arrangement, the building chamber arrangement comprising a building chamber accommodating a carrier, the carrier being configured to receive a three-dimensional work piece produced from a raw material powder by an additive layering process,
a lowering mechanism which is configured to apply a driving force to the building chamber so as to lower the building chamber relative to the carrier until a three-dimensional work piece received on the carrier can be removed from the carrier, and
a receiving box which is configured to be lowered relative to the carrier when the building chamber is lowered relative to the carrier so as to accommodate a three-dimensional work piece received on the carrier when the building chamber is lowered relative to the carrier, the receiving box being designed in the form of a glove box which is sealed against an ambient atmosphere and which is provided with at least one gripping glove.

6. The unpacking system according to claim 5 , wherein the receiving box is connected to the lowering mechanism such that the receiving box is lowered to relative to the carrier simultaneously, when the building chamber, by the driving force provided by the lowering mechanism, is lowered relative to the carrier.

7. The unpacking system according to claim 5 , wherein the receiving box comprises a bottom plate which is provided with an opening, the opening being configured to allow at least a three-dimensional work piece received on the carrier to be accommodated within the receiving box.

8. The unpacking system according to claim 5 , further comprising:
a connecting mechanism which is configured to sealingly connect the building chamber to the receiving box prior to lowering the building chamber relative to the carrier.

9. The unpacking system according to claim 5 , further comprising:
a suction system which is configured to withdraw residual raw material powder contained in the building chamber from the building chamber during and/or after lowering the building chamber relative to the carrier.

10. An apparatus for producing three-dimensional work pieces by irradiating layers of a raw material powder with electromagnetic or particle radiation, the apparatus comprising:
an unpacking system according to claim 1 .

11. An additive manufacturing unpacking system comprising:
a supporting structure which is configured to support a building chamber arrangement, the building chamber arrangement including a building chamber accommodating a carrier, and
a lowering mechanism which is configured to lower the building chamber relative to the carrier until a three-dimensional work piece received on the carrier is positioned outside of the building chamber to facilitate removal of the three-dimensional work piece from the carrier in use of the unpacking system.

12. The additive manufacturing unpacking system of claim 11 , wherein the three-dimensional work piece is produced from a raw material powder by an additive layering process.

13. The additive manufacturing unpacking system of claim 12 , wherein the lowering mechanism is configured to apply a driving force to the building chamber so as to lower the building chamber relative to the carrier at least until a carrier surface of the carrier which is configured to carry a three-dimensional work piece produced from a raw material powder by an additive layering process is arranged substantially flush with an upper rim of the building chamber.

14. The additive manufacturing unpacking system of claim 13 , wherein the lowering mechanism comprises at least one drive element and a transfer element, the transfer element being connected to the at least one drive element and being configured to transfer the driving force generated by the at least one drive element to the building chamber so as to lower the building chamber relative to the carrier.

15. The additive manufacturing unpacking system of claim 14 , wherein the transfer element is configured to apply a pressing force to the upper rim of the building chamber.

16. The additive manufacturing unpacking system of claim 11 , further comprising a receiving box which is configured to be lowered relative to the carrier when the building chamber is lowered relative to the carrier so as to accommodate a three-dimensional work piece received on the carrier when the building chamber is lowered relative to the carrier, the receiving box being designed in the form of a glove box which is sealed against an ambient atmosphere and which is provided with at least one gripping glove.

17. The additive manufacturing unpacking system of claim 16 , wherein the receiving box is connected to the lowering mechanism such that the receiving box is lowered relative to the carrier simultaneously when the building chamber is lowered relative to the carrier.

18. The additive manufacturing unpacking system of claim 17 , wherein the receiving box includes a bottom plate which is provided with an opening, the opening being configured to allow at least a three-dimensional work piece received on the carrier to be accommodated within the receiving box.

19. The additive manufacturing unpacking system of claim 18 , further comprising a connecting mechanism which is configured to sealingly connect the building chamber to the receiving box prior to lowering the building chamber relative to the carrier.

20. The additive manufacturing unpacking system of claim 19 , further comprising a suction system which is configured to wit

Assignees

• SLM Solutions Group AG

Inventors

• Huebinger Karsten
• Krol Toni Adam
• Schwarze Dieter
• Gieser Eduard

Classifications

• B22F12/82

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

• B22F12/88

  Handling of additively manufactured products, e.g. by robots · CPC title

• B22F12/30

  Platforms or substrates · CPC title

• B22F12/222

  for motion along a direction orthogonal to the plane of a layer · CPC title

• B22F10/73

  of powder · CPC title