DE102004031881B4 - Device for extracting gases, vapors and / or particles from the working area of a laser processing machine - Google Patents
Device for extracting gases, vapors and / or particles from the working area of a laser processing machine Download PDFInfo
- Publication number
- DE102004031881B4 DE102004031881B4 DE102004031881A DE102004031881A DE102004031881B4 DE 102004031881 B4 DE102004031881 B4 DE 102004031881B4 DE 102004031881 A DE102004031881 A DE 102004031881A DE 102004031881 A DE102004031881 A DE 102004031881A DE 102004031881 B4 DE102004031881 B4 DE 102004031881B4
- Authority
- DE
- Germany
- Prior art keywords
- suction
- suction element
- ring
- annular
- laser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000007789 gas Substances 0.000 title claims abstract description 13
- 239000002245 particle Substances 0.000 title claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 4
- 238000002844 melting Methods 0.000 claims abstract description 4
- 238000000149 argon plasma sintering Methods 0.000 claims abstract 2
- 238000010147 laser engraving Methods 0.000 claims abstract 2
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000003698 laser cutting Methods 0.000 claims 1
- 238000000608 laser ablation Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000000110 selective laser sintering Methods 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/1462—Nozzles; Features related to nozzles
- B23K26/1464—Supply to, or discharge from, nozzles of media, e.g. gas, powder, wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/007—Fume suction nozzles arranged on a closed or semi-closed surface, e.g. on a circular, ring-shaped or rectangular surface adjacent the area where fumes are produced
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/141—Processes of additive manufacturing using only solid materials
- B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2215/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B2215/003—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area with the assistance of blowing nozzles
Abstract
Vorrichtung (1) zum Absaugen von Gasen, Dämpfen und/oder Partikeln aus dem Arbeitsbereich (2) einer Laserbearbeitungsmaschine, insbesondere einer Lasersintermaschine, einer SLS-Laserschmelzmaschine, einer Laserabtragmaschine oder einer Lasergraviermaschine, mit mindestens einer Absaugöffnung (4), wobei die mindestens eine Absaugöffnung (4) mit einer einen Unterdruck erzeugenden Einrichtung verbunden ist, wobei die mindestens eine Absaugöffnung (4) an der Innenseite (5) eines über dem Arbeitsbereich (2) positionierbaren, mit den Arbeitsbereich (2) umgebenden Wandungen versehenen Absaugelementes (6) angeordnet ist, dadurch gekennzeichnet, daß das Absaugelement (6) ringartig ist.contraption (1) for exhausting gases, vapors and / or particles from the working area (2) of a laser processing machine, in particular a laser sintering machine, an SLS laser melting machine, a laser ablation machine or a laser engraving machine, with at least a suction opening (4), wherein the at least one suction opening (4) with a Vacuum generating device is connected, wherein the at least a suction opening (4) on the inside (5) of an over the work area (2) positionable, with the work area (2) surrounding walls provided suction element (6) is, characterized in that the Suction element (6) is annular.
Description
Die Erfindung betrifft eine Vorrichtung zum Absaugen von Gasen, Dämpfen und/oder Partikeln aus dem Arbeitsbereich einer Laserbearbeitungsmaschine. Unter Laserbearbeitungsmaschinen werden dabei alle Maschinen verstanden, bei denen die Energie eines fokussierten Laserstrahls auf Materialien einwirkt und diese entweder sintert, verschmelzt (selektives Lasersintern von Metallen), Materialien von Oberflächen abträgt oder Oberflächen graviert. Auch weitere Bearbeitungsmaschinen, bei denen eine Bearbeitung eines Materials durch einen Laser erfolgt, werden unter dem Begriff Laserbearbeitungsmaschinen subsumiert, auch wenn sie in der vorstehenden Aufzählung von Laserbearbeitungsmaschinen nicht explizit genannt sind.The The invention relates to a device for the extraction of gases, vapors and / or Particles from the working area of a laser processing machine. Laser processing machines are understood to mean all machines where the energy of a focused laser beam acts on materials and this either sinters, melts (selective laser sintering of metals), removing materials from surfaces or engraving surfaces. Also other processing machines, in which a processing of a Materials made by a laser are termed laser processing machines subsumed, even if they are in the above list of Laser processing machines are not explicitly mentioned.
Bei Laserbearbeitungsmaschine ist es bekannt, den Arbeitsbereich zu begasen. Vorrichtungen, um z. B. Schutzgas wie Helium, Stickstoff und dergleichen einem Arbeitsbereich zuzuführen, weisen in der Regel in der Nähe des Arbeitsbereiches eine Düse auf, die das Gas gegen den Arbeitsbereich bläst.at Laser processing machine is known to the work area too gas. Devices to z. B. inert gas such as helium, nitrogen and the like to be supplied to a work area, as a rule nearby the working area a nozzle on, which blows the gas against the work area.
Es ist auch bekannt, beim Abtragen mittels Laser einen Absaugschlauch oder dergleichen zu positionieren, durch den Dämpfe oder sich bildende Partikel oder Stäube aus dem Bearbeitungsbereich abgesaugt werden können. Derartige Vorrichtungen zum Begasen und/oder Absaugen haben sich aber nicht als ausreichend effizient erwiesen, um die Kontamination von entfernter liegender Maschinenbereichen, insbesondere optischen Elementen mit Dämpfen, Partikeln und dergleichen zu verhindern. An Laserschmelzmaschinen, bei denen das sogenannte selektive Lasersintern (vollständiges Durchschmelzen eines metallischen Pulvers zu einem Körper hoher Dichte) durchgeführt wird, ist es darüber hinaus bekannt, einen gesamten Bauraum mit Schutzgas zu beaufschlagen, wobei die Art des Schutzgases abhängig von der Art des Werkstoffes gewählt wird.It is also known when ablating by means of a laser suction tube or the like, by the vapors or forming particles or dusts can be sucked out of the processing area. Such devices for Gassing and / or aspiration have not been sufficient Efficiently proved to be more remote from contamination Machine areas, in particular optical elements with vapors, particles and the like. On laser melting machines, in which the so-called selective laser sintering (complete melting of a metallic Powder to a body high density) performed it's about it also known to apply a total of space with inert gas, the type of shielding gas depends on the type of material chosen becomes.
Aus
der Patentschrift
Insbesondere
die Vorrichtung gemäß
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Absaugen eines Arbeitsbereiches einer Laserbearbeitungsmaschine mit den Merkmalen des Oberbegriffes des Anspruches 1 derart weiterzubilden, daß mit ihr die Bearbeitungsmöglichkeiten verbessert werden, daß eine effektive Absaugung des Arbeitsbereiches erfolgen kann und vom Arbeitsbereich beabstandete Maschinenbereiche wirksam vor Kontamination durch Dämpfe oder sonstige Partikel geschützt sind, und daß eine gute Zugänglichkeit zum Werkstück gewährleistet wird. Diese Aufgabe wird dadurch gelöst, daß das Absaugelement ringartig ist.Of the Invention is based on the object, a device for suction a work area of a laser processing machine with the features of the preamble of claim 1 such that with her the editing options be improved that one Effective suction of the work area can be done and from the work area spaced machine areas effective against contamination by vapors or other Particles protected are, and that one good accessibility to the workpiece guaranteed becomes. This object is achieved in that the suction ring is.
Durch das ringartige Absaugelement wird in der Umgebung des Laserbrennfleckes auf der zu bearbeitenden Oberfläche oder Pulverschicht ein gleichsam topfartiger Bereich gebildet, der von einer Saugströmung durchsetzt wird, die ein Austreten von Dämpfen und Partikeln aus diesem definierten Absaugbereich verhindert. Dies wird dadurch erreicht, daß das ringartige Absaugelement den Absaugbereich körperlich definiert und begrenzt und die Ansaugöffnung an der Innenseite dieses ringartigen Absaugelementes angeordnet ist.By the annular suction is in the vicinity of the laser focal spot on the surface to be processed or powder layer formed as a pot-like area, the from a suction flow is interspersed, which is an escape of vapors and particles from this defined suction prevented. This is achieved in that the annular Absaugelement the suction area physically defined and limited and the suction port arranged on the inside of this annular suction is.
Wenn eine Mehrzahl von Absaugöffnungen an der Innenseite des Absaugelementes angeordnet ist, dann bildet sich ausgehend vom Zentrum des ringartigen Absaugelementes, in dem die Laserbearbeitung stattfindet, ein radial nach außen laufender Gasstrom oder Gasteppich aus, der hinsichtlich einer Absaugung von Dämpfen oder Partikeln sehr effizient ist. Dieser Effekt wird dadurch noch verbessert, daß die Absaugöffnungen in Reihen übereinander an der Innenseite des ringartigen Absaugelementes angeordnet sind.If a plurality of suction openings the inside of the suction is arranged, then forms starting from the center of the annular suction, in which the Laser processing takes place, a radially outward running gas stream or Gasteppich, with regard to a suction of fumes or Particles is very efficient. This effect is thereby further improved that the suction in rows one above the other are arranged on the inside of the ring-like suction.
Die körperliche Begrenzung des Absaugbereiches wird durch Ausbildung der Innenseite des ringartigen Absaugelementes nach Art einer im wesentlichen senkrecht verlaufenden Wandung noch weiter verbessert.The physical Limitation of the suction is by training the inside the ring-like suction in the manner of a substantially vertical extending wall even further improved.
Das ringartige Absaugelement ist so gelagert, daß es unmittelbar über der Bearbeitungsfläche positionierbar ist, was zur Folge hat, daß der Spalt zwischen der Unterkante des ringartigen Absaugelementes und der Bearbeitungsfläche so gering als möglich gehalten wird.The ring-like suction is stored so that it is directly above the Positionable working surface is what has the consequence that the Gap between the lower edge of the annular suction and the working surface as low as possible is held.
Das ringartige Absaugelement kann sich einseitig in einem Absaugrohr fortsetzen, es ist dazu nach An eines hohlen Gehäuses ausgebildet, das einstückig in das Absaugrohr übergeht.The ring-like suction can be unilaterally in a suction tube Continue, it is designed to a hollow housing, the one piece in the suction tube goes over.
Was die Auslaßöffnungen anbelangt, so können diese an der Oberkante der Innenseite des ringartigen Absaugelementes angeordnet sein. Es ist vorteilhaft, wenn die mindestens eine Auslaßöffnung einen in den Innenbereich des ringartigen Absaugelementes gerichteten Gasstrahl erzeugt. Die Lagerung des ringartigen Absaugelementes ist so getroffen, daß es beispielsweise zusammen mit einem Scannerkopf an einem Kreuzschlitten über der Werkstückoberfläche motorisch verfahren werden kann und darüber hinaus eine motorische Zustellung in Vertikalrichtung auf die Oberfläche des Werkstückes vorgesehen ist. Durch diese Maßnahmen kann das ringartige Absaugelement in Bezug auf den Bearbeitungsort immer optimal positioniert werden.What the outlet openings As far as can be this at the top of the inside of the ring-like suction be arranged. It is advantageous if the at least one outlet opening a directed into the interior of the ring-like suction Gas jet generated. The storage of the ring-like suction is so made that it for example, together with a scanner head on a cross slide above the Workpiece surface motor can be moved and about it In addition, a motor delivery in the vertical direction to the surface of the Workpiece provided is. Through these measures For example, the annular suction member may be relative to the machining site always optimally positioned.
Vorteilhafterweise ist das Absaugrohr als Trägerelement für das ringartige Absaugelement ausgebildet. Das ringartige Absaugelement und das Absaugrohr schließen etwa einen rechten Winkel ein. Die Oberseite des hohlen ringartigen Absaugelementes ist gegen die über der Werkstückoberfläche angeordneten Unterseite des ringartigen Absaugelementes etwas geneigt, so daß der vom Absaugrohr beabstandete Bereich des ringartigen Absaugelementes einen etwas schwächeren Querschnitt hat, was sich auf die Strömungsverhältnisse im Innenbereich positiv auswirkt.advantageously, is the suction tube as a carrier element for the formed ring-like suction. The ring-like suction and close the suction tube about a right angle. The top of the hollow ring-like Absaugelementes is against the over arranged the workpiece surface Bottom of the ring-like suction slightly inclined so that the from Suction tube spaced portion of the annular suction a a little weaker Cross-section has been positive, which affects the flow conditions indoors effect.
Die Erfindung ist anhand vorteilhafter Ausführungsbeispiele in den Zeichnungsfiguren erläutert. Diese zeigenThe Invention is based on advantageous embodiments in the drawing figures explained. These show
Die
insgesamt mit
Bei
dem in
Die
Innenseite
In
Absaugposition ist das ringartige Absaugelement
Bei
dem in
Bei
beiden Ausführungsformen
gemäß
Mit
Das
Absaugrohr
Bei
dem in
- 11
- Vorrichtungcontraption
- 22
- ArbeitsbereichWorkspace
- 33
- Laserstrahllaser beam
- 44
- Absaugöffnungsuction
- 55
- Innenseiteinside
- 66
- ringartiges Absaugelementring-like suction
- 77
- Wandungwall
- 1010
- Auslaßöffnungoutlet
- 1111
-
Oberkante
von
6 Top edge of6 - 1212
- ÜberdruckkanalOverpressure channel
- 2020
-
Oberseite
von
6 Top of6 - 2121
-
Unterseite
von
6 Bottom of6 - 2222
- Absaugrohrsuction tube
- 2525
- Abstands-SensoreinrichtungDistance sensor device
- 3030
- Zuführungsrohrfeed pipe
- 3131
- Düsejet
Claims (23)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004031881A DE102004031881B4 (en) | 2004-06-30 | 2004-06-30 | Device for extracting gases, vapors and / or particles from the working area of a laser processing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004031881A DE102004031881B4 (en) | 2004-06-30 | 2004-06-30 | Device for extracting gases, vapors and / or particles from the working area of a laser processing machine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102004031881A1 DE102004031881A1 (en) | 2006-01-26 |
DE102004031881B4 true DE102004031881B4 (en) | 2007-11-22 |
Family
ID=35511450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102004031881A Active DE102004031881B4 (en) | 2004-06-30 | 2004-06-30 | Device for extracting gases, vapors and / or particles from the working area of a laser processing machine |
Country Status (1)
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DE (1) | DE102004031881B4 (en) |
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US20160001401A1 (en) * | 2013-02-14 | 2016-01-07 | Renishaw Plc | Selective laser solidification apparatus and method |
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WO2023240299A1 (en) * | 2022-06-15 | 2023-12-21 | Trotec Laser Gmbh | Laser plotter having coupled suction element |
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Cited By (6)
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---|---|---|---|---|
US20160001401A1 (en) * | 2013-02-14 | 2016-01-07 | Renishaw Plc | Selective laser solidification apparatus and method |
EP2956262B1 (en) | 2013-02-14 | 2018-04-04 | Renishaw PLC | Selective laser solidification apparatus and method |
US10493562B2 (en) * | 2013-02-14 | 2019-12-03 | Renishaw Plc | Selective laser solidification apparatus and method |
DE102015211075B4 (en) | 2014-06-20 | 2018-12-06 | Sodick Co. Ltd. | 3D printer |
DE102018210260A1 (en) * | 2018-06-22 | 2019-12-24 | Eos Gmbh Electro Optical Systems | Device and method for the generative production of a three-dimensional object |
WO2023240299A1 (en) * | 2022-06-15 | 2023-12-21 | Trotec Laser Gmbh | Laser plotter having coupled suction element |
Also Published As
Publication number | Publication date |
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DE102004031881A1 (en) | 2006-01-26 |
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Owner name: CL SCHUTZRECHTSVERWALTUNGS GMBH, 96215 LICHTENFELS |
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Owner name: CONCEPT LASER GMBH, DE Free format text: FORMER OWNER: CL SCHUTZRECHTSVERWALTUNGS GMBH, 96215 LICHTENFELS, DE |