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Method and device for cleaning and/or replacement of a laser window of a process chamber

A laser window, processing chamber technology, applied in laser welding equipment, cleaning methods and utensils, chemical instruments and methods, etc., can solve the problem that the modified atmosphere cannot be maintained, etc.

Pending Publication Date: 2018-12-14
3D SYST INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operator must open the process chamber to clear the internal laser window, which also means that the modifying atmosphere cannot be maintained in the chamber

Method used

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  • Method and device for cleaning and/or replacement of a laser window of a process chamber
  • Method and device for cleaning and/or replacement of a laser window of a process chamber
  • Method and device for cleaning and/or replacement of a laser window of a process chamber

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Embodiment Construction

[0056] In general, the present invention relates to apparatus and methods for cleaning and / or replacing laser windows of process chambers. More particularly, the present invention relates to a sealing plate which, in combination with an inner sealing ring, can form a lock chamber within a process chamber and in which an atmosphere can be formed separately from the atmosphere in the process chamber. The lock chamber is formed within the processing chamber around an opening in the outer wall fitted with a laser window. The invention relates in particular to the application of layer-by-layer manufacturing of 3D objects in a process chamber using processes and lasers known per se to the skilled person.

[0057] Figures 1 to 3 A diagram showing an embodiment of a device according to the invention.

[0058] During the execution of the process, if a laser is used to fabricate a 3D object layer by layer, the treatment chamber 3 is completely closed in order to generate the desired ...

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PUM

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Abstract

A device is provided for cleaning and / or replacement of a laser window of a process chamber, enclosed by an outer wall, containing a modified atmosphere, in particular a process chamber for layered printing of a 3D object by a technique such as Selective Laser Sintering (SLS), where this device features an opening in the outer wall that is fitted with the laser window and where this laser window allows a laser beam from a laser source located outside of the process chamber into the process chamber, where an external sealing ring is provided that extends between the outer wall and this laser window. A method is also provided for cleaning and / or replacement of the laser window in the opening of the outer wall of the enclosed process chamber.

Description

technical field [0001] The invention relates to a device for cleaning and / or replacing a laser window of a process chamber closed by an outer wall and containing a modifying atmosphere, in particular for processing by a technique such as selective laser sintering (SLS) A processing chamber for layered printing of 3D objects, wherein the device is characterized by an opening in an outer wall fitted with a laser window, and wherein the laser window allows a laser beam from a laser source located outside the processing chamber to enter the processing chamber , wherein an outer sealing ring extending between the outer wall and the laser window is provided. [0002] The invention also relates to a method for cleaning and / or replacing a laser window in an opening of an outer wall of a closed treatment chamber. Background technique [0003] According to the prior art, the laser window is placed in a process chamber containing a modified atmosphere for processes such as "direct met...

Claims

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Application Information

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IPC IPC(8): B22F3/105B33Y40/00
CPCB33Y40/00B22F10/00B22F10/28B22F12/38B22F12/22B22F10/32B23K26/123B23K26/127B33Y10/00B33Y30/00B23K26/1224B23K26/706Y02P10/25H01L21/67028H01L21/67126H01L21/02041B08B15/02B22F12/41
Inventor J.范韦伦贝格B.沃肯伯格
Owner 3D SYST INC
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