Device for Producing a Three-Dimensional Object in Layers

Patent metadata

Field	Value
Publication number	US-2016279871-A1
Application number	US-201415029707-A
Country	US
Kind code	A1
Filing date	Nov 7, 2014
Priority date	Nov 15, 2013
Publication date	Sep 29, 2016
Grant date	—

Abstract

A device ( 20 ) for unpacking a three-dimensional object ( 2 ), produced in an interchangeable container ( 5 ) and/or on a construction platform ( 7 ) by applying layers of a construction material ( 11 ) in powder form and by selective hardening thereof, from the surrounding unhardened powder ( 9 ) contains a rotating device ( 22 ) for holding the interchangeable container ( 5 ) and/or the construction platform ( 7 ), which rotating device is able to rotate the interchangeable container ( 5 ) and/or the construction platform ( 7 ) through an angle of at least 90° out of the upright position.

First claim

1 . A device for unpacking a three-dimensional object, which has been produced in an interchangeable container and/or on a construction platform by applying in layers and selectively solidifying a pulverulent building material, from the remaining non-solidified powder surrounding said object, comprising:
a rotary device which is rotatably disposed and which is capable of receiving the interchangeable container and/or the construction platform and of rotating the latter by an angle of at least 90° from the upright position.

2 . The device as claimed in claim 1 , wherein the rotation axis about which the rotary device is rotatable in order for the interchangeable container and/or the construction platform to be rotated from the upright position runs in a horizontal manner.

3 . The device as claimed in claim 1 , wherein said device furthermore includes an installation for transmitting a vibration and/or knock to the object.

4 . The device as claimed in claim 1 , wherein said device furthermore includes:
a lid for closing the interchangeable container, and/or a collection container for the remaining non-solidified powder.

5 . The device as claimed in claim 4 , wherein the collection container is configured such that the latter is capable of docking onto the lid which is capable of closing the interchangeable container such that a gas-tight interior space is created.

6 . The device as claimed in claim 1 , wherein the rotation axis about which the rotary device is rotatable in order for the interchangeable container to be rotated from the upright position thereof runs through that region of the rotary device that is specified for receiving the interchangeable container.

7 . The device as claimed in claim 1 , wherein the rotary device is configured such that the interchangeable container and/or the construction platform are/is rotatable about more than one rotation axis.

8 . A device for producing a three-dimensional object by applying in layers and selectively solidifying a pulverulent building material, having
a processing chamber for producing the object in layers in an interchangeable container and/or on a construction platform, and a device for unpacking the object from the remaining non-solidified powder surrounding said object, as claimed in claim 1 .

9 . The device as claimed in claim 8 , wherein the unpacking device is disposed outside the processing chamber.

10 . The device as claimed in claim 8 , wherein the unpacking device is disposed within the processing chamber such that the interchangeable container and/or the construction platform are/is already received in the rotary device during production of the object.

11 . A method for relieving a three-dimensional object, which has been produced in an interchangeable container and/or on a construction platform by applying in layers and selectively solidifying a pulverulent building material, from remaining non-solidified powder, the method including the steps:
attaching the construction platform to a rotary device, rotating the interchangeable container and/or the construction platform by an angle of at least 90° from the upright position.

12 . The method as claimed in claim 11 , said method furthermore including a step of transmitting vibrations and/or knocks to the object.

13 . The method as claimed in claim 12 , wherein
parameters for vibrating and/or knocking are determined from geometric data of the three-dimensional object and/or from process parameters, and the unpacking device is controlled so as to carry out vibrating and/or knocking using the determined parameters.

14 . The method as claimed in claim 13 , wherein
determining the parameters is performed in a computer-assisted manner by way of software, and the unpacking device is controlled by the software so as to carry out vibrating and/or knocking using the determined parameters.

15 . The method as claimed in claim 14 , wherein
the parameters for vibrating are selected from frequency and/or direction and/or amplitude and/or duration and/or impulse profile and/or the parameters for knocking are selected from intensity and/or direction and/or temporal spacing of the individual impacts.

16 . The method as claimed in claim 15 , wherein said method
prior to attaching the interchangeable container to the rotary device includes closing the interchangeable container by way of a lid which has a closable outlet opening, wherein the outlet opening is opened once the rotary device has been rotated.

17 . The method as claimed in claim 16 , wherein said method
prior to opening the outlet opening includes a step of docking the outlet opening of the lid onto a collection opening of a collection container, so as to form a gas-tight interior space.

18 . The method as claimed in claim 17 , wherein the interior space formed by the interchangeable container, closed by the lid, and by the collection container is filled with inert gas.

19 . The method as claimed in claim 11 , wherein the interchangeable container is rotated about a rotary axis which runs through the interchangeable container.

20 . The method as claimed in claim 11 , wherein the interchangeable container and/or the construction platform are/is rotated about more than one rotation axis.

21 . The method as claimed in claim 11 , wherein
an angle and/or a temporal sequence of angular settings is determined from geometric data of the three-dimensional object, and the rotary device is controlled so as to carry out rotation of the interchangeable container and/or of the construction platform using the determined angle and/or the determined temporal sequence of angular settings.

22 . The method as claimed in claim 21 , wherein
determining the angle and/or the temporal sequence of angular settings is performed in a computer-assisted manner by way of software, and the rotary device is controlled by the software.

23 . A method for producing a three-dimensional object by applying in layers and selectively solidifying a pulverulent building material, the method including the steps:
constructing the object in an interchangeable container and/or on a construction platform, and removing remaining non-solidified powder from the object by a method as claimed in claim 11 .

24 . The method as claimed in claim 23 , wherein the interchangeable container and/or the construction platform are/is already received in the rotary device during production of the object.

Assignees

• Eos Gmbh Electro Optical Systems

Inventors

• Heugel Martin
• Fey Georg

Classifications

• B29C64/357

  Recycling · CPC title

• B22F12/88

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

• B22F10/68

  Cleaning or washing · CPC title

• B22F10/73

  of powder · CPC title

• B22F10/28

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