System for additive production of three-dimensional objects

Patent metadata

Field	Value
Publication number	US-10821666-B2
Application number	US-201715847288-A
Country	US
Kind code	B2
Filing date	Dec 19, 2017
Priority date	Dec 19, 2016
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

A system for additive production of three-dimensional objects, comprising at least one work station, which is designed to carry out at least one work process as part of the additive production of three-dimensional objects, comprising: at least one, particularly user-side, movable, particularly sliding, transport carriage, which comprises a frame structure, which comprises a receiving device, which comprises a receptacle chamber designed to receive a powder module within the frame structure, wherein the frame structure comprises at least two frame structure sections, wherein a first frame structure section is borne so as to be movable relative to a second frame structure section, particularly in a vertically aligned movement direction, wherein the transport carriage comprises at least one, particularly motorized lifting device, which is designed to generate a lifting force that moves the first frame structure section relative to the second frame structure section.

First claim

The invention claimed is:

1. A work station configured to perform at least one work process using a powder module supplied to the work station by a transport carriage, the work station comprising:
a housing structure;
a first securing device configured to secure a transport carriage to the housing structure upon the transport carriage having been moved into a pre-docking position, the transport carriage comprising a frame structure and a lifting device configured to lift at least a first frame structure section of the frame structure, the first frame structure section comprising a receiving device having a receptacle chamber configured to receive a powder module;
a first detection device configured to detect the transport carriage having been moved into the pre-docking position and secured by the first securing device;
a second detection device configured to detect the first frame structure section having been lifted into a pre-transfer position, the lifting device lifting the first frame structure section when the first detection device detects the transport carriage having been moved into the pre-docking position and/or secured by the first securing device; and
a second securing device configured to secure the transport carriage in a transfer position with the first frame structure section having been lifted by the lifting device;
wherein the first securing device is configured to move the frame structure laterally from the pre-transfer position to the transfer position, thereby allowing the second securing device to secure the transport carriage in the transfer position, the powder module being transferrable from the transport carriage into the work station with the transport carriage being in the transfer position;
wherein the at least one work process comprises: additive production of three dimensional objects, a preparatory work process that precedes the additive production of three dimensional objects, and/or a subsequent work process that follows the additive production of three-dimensional objects.

2. The work station of claim 1 , comprising:
a transport track configured to receive the powder module, the powder module being movable along the transport track into the housing structure.

3. The work station of claim 1 , wherein the housing structure comprises a first bearing device configured to interact with a second bearing device that defines part of the receiving device of the transport carriage, the first bearing device and the second bearing device together providing a transport track extending between the transport carriage and the housing structure.

4. The work station of claim 3 , wherein the second bearing device is configured to movably bear the powder module from a first position comprising the powder module being accommodated in the receptacle chamber to a second position comprising the powder module protruding from the receptacle chamber and/or from the first frame structure section.

5. The work station of claim 1 , wherein the first securing device comprises a setting element ( 10 a ) movably coupled to a securing element.

6. The work station of claim 1 , wherein the first detection device comprises an acoustic detection element, an electric detection element, an optical detection element, or a haptic detection element; and/or
wherein the second detection device comprises an acoustic detection element, an electric detection element, an optical detection element, or a haptic detection element.

7. The work station of claim 1 , wherein the second securing device comprises a first securing element configured to interlock with a second securing element of the transport carriage.

8. The work station of claim 7 , wherein the first securing element and the second securing element respectively comprise form-fitting elements configured to align the first frame structure section relative to the housing structure.

9. The work station of claim 1 , wherein the pre-docking position comprises the transport carriage being located at a distance from the housing structure of from 5 cm to 15 cm.

10. The work station of claim 1 , wherein the first detection device is configured to generate pre-docking position information describing a location of the transport carriage relative to the pre-docking position; and/or wherein the first detection device is configured to generate securing information describing a securing of the transport carriage by the first securing device.

11. The work station of claim 10 , wherein the lifting device is configured to lift at least the first frame structure section on the basis of the pre-docking position information and/or on the basis of the securing information.

12. The work station of claim 1 , wherein the second detection device is configured generate pre-transfer position information describing a location of the first frame structure section relative to the pre-transfer position.

13. The work station of claim 12 , wherein the first securing device is configured to move the frame structure laterally from the pre-transfer position to the transfer position on the basis of the pre-transfer position information.

14. The work station of claim 1 , wherein the docking position comprises the transport carriage being located at a distance from the housing structure that is less than the distance corresponding to the pre-docking position.

15. The work station of claim 1 , wherein the transfer position is realized with the first frame structure section having been lifted into the pre-transfer position and the transport carriage having been moved to the docking position.

16. The work station of claim 1 , wherein the powder module comprises:
a construction module comprising a process chamber in which additive construction of a three-dimensional object occurs;
a dosing module from which construction material is dosed into the process chamber during the additive construction of the three-dimensional object; or
an overflow module configured to receive excess non-solidified construction material.

17. A method of supplying a powder module to a work station configured to perform at least one work process, the method comprising:
securing with a first securing device, a transport carriage to a housing structure of a work station upon the transport carriage having been moved into a pre-docking position, the transport carriage comprising a frame structure and a lifting device configured to lift at least a first frame structure section of the frame structure, the first frame structure section comprising a receiving device having a receptacle chamber configured to receive a powder module;
detecting with a first detection device, the transport carriage having been moved into the pre-docking position and secured by the first securing device;
detecting with a second detection device, the first frame structure section having been lifted into a pre-transfer position, the lifting device lifting the first frame structure section when the first detection device detects the transport carriage having been moved into the pre-docking position and/or secured by the first securing device;
moving with the first securing device, the frame structure laterally from the pre-transfer position to a transfer position; and
securing with a second securing device, the transport carriage in the transfer position with the first frame structure section having been lifted by the lifting device, the powder module being transferrable from the transport carriage into the work station with the transport carriage being in the transfer position;
wherein the at least one work process compris

Assignees

• Cl Schutzrechtsverwaltungs Gmbh
• Concept Laser Gmbh

Inventors

• Hofmann Alexander
• Stammberger Jens
• Brückner Patrick

Classifications

• H10P72/3408

  Docking arrangements · CPC title

• B22F12/86

  Serial processing with multiple devices grouped · CPC title

• B22F12/38

  Housings, e.g. machine housings · CPC title

• B22F12/90

  Means for process control, e.g. cameras or sensors · CPC title

• B22F12/88

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