WO2020099805A1 - Additive manufacturing machine comprising a suction box - Google Patents

Additive manufacturing machine comprising a suction box Download PDF

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Publication number
WO2020099805A1
WO2020099805A1 PCT/FR2019/052724 FR2019052724W WO2020099805A1 WO 2020099805 A1 WO2020099805 A1 WO 2020099805A1 FR 2019052724 W FR2019052724 W FR 2019052724W WO 2020099805 A1 WO2020099805 A1 WO 2020099805A1
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WO
WIPO (PCT)
Prior art keywords
additive manufacturing
manufacturing
suction
machine
plate
Prior art date
Application number
PCT/FR2019/052724
Other languages
French (fr)
Inventor
Alexis PICARD
Original Assignee
Addup
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Addup filed Critical Addup
Publication of WO2020099805A1 publication Critical patent/WO2020099805A1/en

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Classifications

    • 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
    • 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
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/25—Housings, e.g. machine housings
    • 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
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/364—Conditioning of environment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the present invention relates to the general field of selective additive manufacturing.
  • Selective additive manufacturing consists of making three-dimensional objects by consolidating selected areas on successive layers of powdery material (metallic powder, ceramic powder, etc.). The consolidated areas correspond to successive sections of the three-dimensional object. Consolidation is done, for example, layer by layer, by a total or partial selective fusion carried out with a consolidation source (high power laser beam, electron beam, etc.).
  • a consolidation source high power laser beam, electron beam, etc.
  • an additive manufacturing apparatus comprises in a fixed manufacturing chamber:
  • a tool such as a squeegee or a roller, which moves in translation on the powder bed to spread the powder.
  • a flow of inert gas intended to evacuate the fumes and projections resulting from the fusion of the powders.
  • This flow of inert gas prevents the fumes and projections from disturbing the energy beam and reduces the quality of the beam and the quality of the fusion. It also helps prevent these fumes and projections from dirtying or obstructing the glass through which the energy beam enters the manufacturing chamber.
  • the configurations proposed to date for such smoke evacuation mechanisms are however not entirely satisfactory.
  • the present invention aims to provide an additive manufacturing machine for the evacuation of fumes and projections resulting from the fusion of powders.
  • the invention relates to an additive manufacturing machine comprising a suction box configured for the evacuation of the fumes resulting from the additive manufacturing of a part, said machine comprising an enclosure, a manufacturing plate, and said housing.
  • suction comprising a lower part arranged along a side wall of the enclosure, comprising a suction duct, and an upper part projecting opposite the lower part and facing the side wall of the enclosure , comprising an opening opening into the enclosure and in connection with the suction duct, the upper part being inclined so that the opening is oriented in the direction of the production plate.
  • the invention can also include the following characteristics:
  • the upper part is inclined at an angle between 140 to 161 °, with respect to a vertical plane;
  • the length of the opening of the suction box is approximately equal to the width of the production plate; - The opening of the suction box is arranged along an axis of the production plate;
  • the opening of the suction box is oblong;
  • the height of the opening is at least 60mm.
  • FIG. 1 is a schematic representation of an additive manufacturing machine according to the invention.
  • FIG. 2 illustrates a cross section of a suction housing according to the invention
  • FIG. 3 illustrates a side view of a suction housing according to the invention
  • FIG. 4 illustrates a front view of a suction housing according to the invention.
  • FIG. 5 illustrates a perspective view of a suction housing according to the invention.
  • the machine 10 for additive manufacturing comprises a manufacturing chamber 20.
  • the manufacturing chamber 20 comprises an enclosure 30 and a worktop 40.
  • the enclosure 30 comprises sides and an upper cover.
  • the enclosure 30 can for example be made of sheet metal.
  • the work surface 40 is covered by said enclosure 30 and can, for example, be made of metal or ceramic.
  • the manufacturing chamber 20 also includes a manufacturing plate 50.
  • the manufacturing plate 50 is intended to receive the different layers of successive additive manufacturing powder and to support a part during its manufacturing. To do this, the plate 50 has characteristics of flatness and surface condition adapted to additive manufacturing. In addition, the plate 50 preferably has mechanical strength characteristics making it possible to support a part of several tens or even hundreds of kilograms. Thus, the plate 50 can for example be made of metal.
  • the plate 50 slides through an opening of the work plan 40 in a jacket 41 located under the work plan 40.
  • the work plan 40 surrounds the upper edge of the manufacturing shirt, and the manufacturing jacket makes it possible to keep a manufactured part and the non-solidified powder which surrounds it on the plate 50 in a substantially closed volume.
  • the plate 50 could, for example, be juxtaposed with the work surface 40.
  • the plate 50 is located in the plane of the work plane 40 at the start of the manufacturing cycle, then in a plane substantially parallel to the plane of the work plane 40 as the plate descends into the jacket.
  • the production plate 50 can be circular, rectangular, square, triangular, etc.
  • a first orthogonal coordinate system XYZ is placed, in which the directions X and Y are in the plane of the plate 50 and the direction Z is normal to the plane of the plate 50.
  • the machine 10 also preferably comprises a closed enclosure 1 1 in which the manufacturing chamber 20 and the work surface 40 are positioned.
  • the closed enclosure 1 1 is adapted to be substantially gas tight.
  • the closed enclosure 11 can, for example, consist of polymer panels and / or metal panels.
  • the closed enclosure 1 1 can be filled with an inert gas such as nitrogen or a noble gas (ie a gas taken from helium, neon, argon, krypton, xenon or radon), or a mixture of some of these gases.
  • an inert gas such as nitrogen or a noble gas (ie a gas taken from helium, neon, argon, krypton, xenon or radon), or a mixture of some of these gases.
  • the manufacturing chamber 20 comprises a carriage 60 sliding above the work surface 40 and the plate 50.
  • the carriage 60 makes it possible to distribute the powder on the plate 50, or on a previous layer of powder, for the production of a part.
  • the carriage 60 may, for example, include a squeegee and / or a roller.
  • the manufacturing chamber 20 comprises a power supply member 70 for melting a metal powder.
  • the power supply member 70 can, for example, be a source of laser beam, electron beam, etc.
  • the machine 10 starts in a position in which the plate 50 is located substantially in the same plane as the work plane 40.
  • the closed enclosure 1 1 is sealed. Oxygen is removed from it to be replaced by an inert gas.
  • This technical arrangement advantageously makes it possible to improve the quality of manufacturing, by avoiding possible oxidation of the metal powder used to manufacture a part.
  • the depletion of oxygen in the closed chamber 11 reduces the risk of ignition or explosion, which makes the machine 10 safer than some devices of the prior art.
  • Powder is taken or deposited in front of the carriage 60 by a powder distribution device which can be a drawer or an injector, or a powder reservoir disposed above the work surface.
  • a powder distribution device which can be a drawer or an injector, or a powder reservoir disposed above the work surface.
  • the carriage 60 translates above a powder supply container provided in the worktop 40.
  • the carriage 60 distributes additive manufacturing powder, for example metallic, on the plate 50 and the power supply member 70 sintered or melts the powder, according to chosen planar coordinates, to manufacture the part X.
  • additive manufacturing powder for example metallic
  • additive manufacturing consists of a successive addition of layers of material from a part .
  • the manufacturing and powder melting plan remains unchanged throughout the process.
  • the work surface 40 or the plate 50 is moved so that only the layer being manufactured is located in the plane of the work surface 40.
  • the plate 50 is movable in translation relative to the manufacturing chamber 20, which means that in the reference frame of the chamber 20 the plate 50 moves.
  • An actuator 42 allows the translational movement of the plate 50 in the jacket.
  • the actuator 42 is preferably configured to cause relative translations all substantially in the same direction, in this case said direction of translation is in a vertical plane of the manufacturing chamber 20.
  • actuator an electronically and / or pneumatically controlled mechanism capable of producing a relative translational movement between the two entities that it connects, in particular a linear actuator capable of creating a linear compression movement ( it will be understood that the invention is not limited to this type of actuators).
  • Each actuator is thus typically of the jack type, with a fixed main part, often tubular (then called cylinder) in which a movable part (called piston rod) is movable in translation on command.
  • the cylinder can be purely electromechanical (this is called a linear actuator, for example with a screw-nut mechanism), pneumatic, hydraulic or any other type of technology defined according to the characteristics of effort, speed, stroke, shape. , weight, and above all reliability, specific to the field of additive manufacturing.
  • the invention is not limited to jacks, and that the actuator (s) may use other technologies, and be for example ball screws or worms.
  • the manufacturing chamber 20 may also include a pit 90 intended to receive an excess of powder and arranged in the continuity of the manufacturing plate.
  • the excess powder is brought from the manufacturing plate 50 to the pit 90 by means of the roller of the carriage 60 or a blade (not shown) disposed on said carriage 60.
  • it results from the fusion of metal powders, fumes and projections which must be evacuated.
  • One of the reasons is not to disturb the laser beam so as not to reduce the quality of the powder fusion.
  • the machine 10 includes a gas inlet conduit.
  • the gas can come from the enclosure or correspond to a separate gas, coming from another source, such as an inert gas such as nitrogen or a noble gas (ie a gas taken from helium, neon , argon, krypton, xenon or radon), or a mixture of some of these gases.
  • an inert gas such as nitrogen or a noble gas (ie a gas taken from helium, neon , argon, krypton, xenon or radon), or a mixture of some of these gases.
  • the gas inlet duct can be arranged in the form of a blowing rod 100.
  • the blowing rod is configured to conduct a gas flow in a first direction F1 substantially orthonormal to the production plate 50.
  • said carriage 60 when the carriage 60 moves and finds itself at the end of its travel outside the production plate, said carriage is then positioned below the flow of gas coming from the blowing rod.
  • the gas flow F1 is thus deflected by the carriage, to obtain a gas flow in a second direction F2 tangent to the manufacturing plane.
  • the carriage can comprise a flow orientation device, which when the carriage 60 moves and finds itself at the end of travel outside the manufacturing zone, is then positioned below the flow of gas from the cane. blowing. The gas flow is thus diverted by the device, to obtain a gas flow in the second direction F2 tangent to the manufacturing plane.
  • the gas flow mixes with the fumes from the powder fusion.
  • the flow of gas containing the fumes therefore rises from the production plate in a third direction F3, for example substantially ascending.
  • the machine also includes a suction box 80 which can be connected to a suction circuit (not shown for filtering and treating the aspirated gases in order to re-inject the gas thus recycled in chamber 20 for manufacturing.
  • the suction box 80 is arranged in height opposite the production plate, a fume capture opening of the suction box 80 preferably being in a plane substantially perpendicular to the direction F3 of the gas flow containing the fumes so as to capture a maximum of said flow in the direction F3.
  • the suction housing 80 can be arranged along or in the immediate vicinity of a side wall of the enclosure 30.
  • Said housing 80 can, for example, be made of metal or plastic.
  • the suction housing has a lower part 81 comprising a suction duct 82 for example substantially parallel to the side wall on which the housing 80 is disposed.
  • the width of the duct and / or the width of the lower part can be configured to adapt to the suction circuit of the manufacturing chamber 20.
  • the lower part 81 can adapt to the inlet of the circuit suction by fixing means, such as by clipping.
  • the suction housing has an upper part 83 projecting opposite the lower part 81 and facing the wall of the manufacturing chamber.
  • the upper part 83 comprises for example a profile in the shape of a rectangular trapezoid.
  • the sides of the trapezium having the rectangular angles being close to the wall on which the housing 80 is arranged, the side of the greatest length of the trapezoid being distant from said wall.
  • the suction housing also includes a suction mouth 84, included in the projecting part 83.
  • the suction mouth 84 is composed by a recess in the projecting part 83, preferably of oblong shape.
  • the recess can also be circular, rectangular, oval, etc.
  • the recess opens out in its lower part to be in connection with the suction duct 82.
  • the angles of the recess can be rounded.
  • the suction mouth 84 is preferably in the continuity of the suction duct 82.
  • the length of the conduit 82 can be substantially equal to the length of the suction mouth 84.
  • the suction mouth 84 is inclined opposite the lower part 81.
  • the front part of the suction mouth 84 (close to the manufacturing plate 50) is inclined by approximately 140 to 161 °, preferably by approximately 151 ° facing a vertical plane.
  • the rear portion 84a of the suction mouth 84 is also included in an inclined plane of approximately 140 to 161 °, preferably of approximately 151 °, facing a vertical plane.
  • the inclination of the suction mouth 84 is configured so that the suction mouth is preferably in a plane substantially perpendicular to a direction of the fumes.
  • the inclination of the suction mouth 84 makes it possible to optimally capture the maximum flow including the manufacturing fumes.
  • the length of the suction mouth 84 of the housing 80 is equal to at least the width of the production plate so as to capture a maximum of the flow F3.
  • the suction box can also include means for fixing 85 to the wall, for example arranged above the projecting part.
  • These fastening means 85 can for example include fixing holes to a wall of the enclosure 30.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Toxicology (AREA)
  • Powder Metallurgy (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Laser Beam Processing (AREA)

Abstract

The present invention relates to an additive manufacturing machine (10) comprising a suction box (80) configured to evacuate fumes arising from the additive manufacturing of a part, the machine (10) comprising a chamber (30) and a production platform (50), and the suction box (80) comprising a lower portion (81) arranged along one side wall of the chamber (30), comprising a suction pipe (82), and an upper portion (83) projecting opposite the lower portion (81) and opposite the side wall of the chamber (30), comprising an opening (84) which leads into the chamber (30) and which is connected to the suction pipe (82), the upper portion (83) being inclined such that the opening faces the production platform (50).

Description

MACHINE DE FABRICATION ADDITIVE COMPORTANT UN BOITIER  ADDITIVE MANUFACTURING MACHINE COMPRISING A HOUSING
D’ASPIRATION  SUCTION
DOMAINE DE L'INVENTION ET ETAT DE LA TECHNIQUE FIELD OF THE INVENTION AND STATE OF THE ART
La présente invention concerne le domaine général de la fabrication additive sélective. The present invention relates to the general field of selective additive manufacturing.
Plus particulièrement, elle concerne une machine de fabrication additive.  More particularly, it relates to an additive manufacturing machine.
La fabrication additive sélective consiste à réaliser des objets tridimensionnels par consolidation de zones sélectionnées sur des strates successives de matériau pulvérulent (poudre métallique, poudre de céramique, etc...). Les zones consolidées correspondent à des sections successives de l'objet tridimensionnel. La consolidation se fait par exemple couche par couche, par une fusion sélective totale ou partielle réalisée avec une source de consolidation (faisceau laser de forte puissance, faisceau d’électrons, etc.).  Selective additive manufacturing consists of making three-dimensional objects by consolidating selected areas on successive layers of powdery material (metallic powder, ceramic powder, etc.). The consolidated areas correspond to successive sections of the three-dimensional object. Consolidation is done, for example, layer by layer, by a total or partial selective fusion carried out with a consolidation source (high power laser beam, electron beam, etc.).
Classiquement, un appareil de fabrication additive comporte dans une chambre de fabrication fixe :  Conventionally, an additive manufacturing apparatus comprises in a fixed manufacturing chamber:
- un plateau mobile sur lequel sont déposées successivement les différentes couches de poudre de fabrication additive,  - a movable plate on which the different layers of additive manufacturing powder are successively deposited,
- une ou plusieurs sources de faisceaux d’énergie commandées pour balayer sélectivement le lit de poudre,  - one or more sources of energy beams controlled to selectively sweep the powder bed,
- un réservoir d’alimentation de poudre,  - a powder supply tank,
- un outil, tel qu’une raclette ou un rouleau, qui se déplace en translation sur le lit de poudre pour étaler la poudre.  - a tool, such as a squeegee or a roller, which moves in translation on the powder bed to spread the powder.
Classiquement, on prévoit au-dessus du plateau mobile un flux de gaz inerte destiné à évacuer les fumées et projections résultant de la fusion des poudres. Ce flux de gaz inerte évite que les fumées et les projections ne perturbent le faisceau d’énergie et diminuent la qualité du faisceau et la qualité de la fusion. Il contribue en outre à empêcher que ces fumées et projections salissent ou obstruent la vitre par laquelle le faisceau d’énergie pénètre dans la chambre de fabrication. Les configurations proposées à ce jour pour de tels mécanismes d’évacuation de fumée ne sont néanmoins pas pleinement satisfaisantes. Conventionally, there is provided above the movable plate a flow of inert gas intended to evacuate the fumes and projections resulting from the fusion of the powders. This flow of inert gas prevents the fumes and projections from disturbing the energy beam and reduces the quality of the beam and the quality of the fusion. It also helps prevent these fumes and projections from dirtying or obstructing the glass through which the energy beam enters the manufacturing chamber. The configurations proposed to date for such smoke evacuation mechanisms are however not entirely satisfactory.
PRESENTATION GENERALE DE L’INVENTION GENERAL PRESENTATION OF THE INVENTION
La présente invention a pour objectif de fournir une machine de fabrication additive permettant l’évacuation des fumées et projections résultant de la fusion des poudres. The present invention aims to provide an additive manufacturing machine for the evacuation of fumes and projections resulting from the fusion of powders.
Dans ce but, l’invention concerne une machine de fabrication additive comprenant un boîtier d’aspiration configuré pour l’évacuation des fumées résultant de la fabrication additive d’une pièce, ladite machine comprenant une enceinte, un plateau de fabrication, et ledit boîtier d’aspiration comprenant une partie inférieure disposée le long d’une paroi latérale de l’enceinte, comportant un conduit d’aspiration, et une partie supérieure en saillie en regard de la partie inférieure et en regard de la paroi latérale de l’enceinte, comprenant une ouverture débouchant dans l’enceinte et en liaison avec le conduit d’aspiration, la partie supérieure étant inclinée de telle façon que l’ouverture est orientée en direction du plateau de fabrication.  For this purpose, the invention relates to an additive manufacturing machine comprising a suction box configured for the evacuation of the fumes resulting from the additive manufacturing of a part, said machine comprising an enclosure, a manufacturing plate, and said housing. suction comprising a lower part arranged along a side wall of the enclosure, comprising a suction duct, and an upper part projecting opposite the lower part and facing the side wall of the enclosure , comprising an opening opening into the enclosure and in connection with the suction duct, the upper part being inclined so that the opening is oriented in the direction of the production plate.
Cette disposition technique est particulièrement avantageuse. This technical arrangement is particularly advantageous.
En effet, elle permet d’évacuer de façon optimale les fumées et projections résultant de la fusion des poudres.  Indeed, it allows optimal evacuation of fumes and projections resulting from the fusion of powders.
Avantageusement, l’invention peut en outre comprendre les caractéristiques suivantes : Advantageously, the invention can also include the following characteristics:
- la partie supérieure est inclinée d’un angle compris entre 140 à 161 °, vis à vis d’un plan vertical ;  - the upper part is inclined at an angle between 140 to 161 °, with respect to a vertical plane;
- la longueur de l’ouverture du boîtier d’aspiration est environ égale à la largeur du plateau de fabrication ; - l’ouverture du boîtier d’aspiration est disposée selon un axe du plateau de fabrication ; - The length of the opening of the suction box is approximately equal to the width of the production plate; - The opening of the suction box is arranged along an axis of the production plate;
- l’ouverture du boîtier d’aspiration est de forme oblongue ; et  - the opening of the suction box is oblong; and
- la hauteur de l’ouverture est d’au moins 60mm.  - the height of the opening is at least 60mm.
DESCRIPTION DES FIGURES DESCRIPTION OF THE FIGURES
D’autres caractéristiques et avantages de l’invention ressortiront encore de la description qui suit, laquelle est purement illustrative et non limitative, et doit être lue en regard des figures annexées sur lesquelles : Other characteristics and advantages of the invention will emerge from the following description, which is purely illustrative and not limiting, and should be read with reference to the appended figures in which:
- la figure 1 est une représentation schématique d’une machine de fabrication additive selon l’invention ;  - Figure 1 is a schematic representation of an additive manufacturing machine according to the invention;
- la figure 2 illustre une coupe transversale d’un boîtier d’aspiration selon l’invention ;  - Figure 2 illustrates a cross section of a suction housing according to the invention;
- la figure 3 illustre une vue de profil d’un boîtier d’aspiration selon l’invention ; - Figure 3 illustrates a side view of a suction housing according to the invention;
- la figure 4 illustre une vue de face d’un boîtier d’aspiration selon l’invention ; et- Figure 4 illustrates a front view of a suction housing according to the invention; and
- la figure 5 illustre une vue en perspective d’un boîtier d’aspiration selon l’invention. - Figure 5 illustrates a perspective view of a suction housing according to the invention.
DESCRIPTION DETAILLEE DE L'INVENTION DETAILED DESCRIPTION OF THE INVENTION
Disposition générale General provision
En référence à la figure 1 , la machine 10 de fabrication additive comprend une chambre de fabrication 20.  With reference to FIG. 1, the machine 10 for additive manufacturing comprises a manufacturing chamber 20.
D’une manière classique, la chambre de fabrication 20 comprend une enceinte 30 et un plan de travail 40. L’enceinte 30 comprend des flancs et un capot supérieur. L’enceinte 30 peut par exemple être réalisée en tôle. Le plan de travail 40 est recouvert par ladite enceinte 30 et peut, par exemple, être réalisé en métal ou en céramique.  In a conventional manner, the manufacturing chamber 20 comprises an enclosure 30 and a worktop 40. The enclosure 30 comprises sides and an upper cover. The enclosure 30 can for example be made of sheet metal. The work surface 40 is covered by said enclosure 30 and can, for example, be made of metal or ceramic.
La chambre de fabrication 20 comporte également un plateau 50 de fabrication. Le plateau de fabrication 50 est destiné à recevoir les différentes couches de poudre de fabrication additive successives et à soutenir une pièce lors de sa fabrication. Pour ce faire, le plateau 50 présente des caractéristiques de planéité et d’état de surface adaptées à la fabrication additive. De plus, le plateau 50 présente préférentiellement des caractéristiques de résistance mécanique permettant de soutenir une pièce de plusieurs dizaines voire centaines de kilogrammes. Ainsi, le plateau 50 peut par exemple être réalisé en métal. The manufacturing chamber 20 also includes a manufacturing plate 50. The manufacturing plate 50 is intended to receive the different layers of successive additive manufacturing powder and to support a part during its manufacturing. To do this, the plate 50 has characteristics of flatness and surface condition adapted to additive manufacturing. In addition, the plate 50 preferably has mechanical strength characteristics making it possible to support a part of several tens or even hundreds of kilograms. Thus, the plate 50 can for example be made of metal.
Selon le mode de réalisation ici présenté, le plateau 50 coulisse au travers d’une ouverture du plan de travail 40 dans une chemise 41 située sous le plan de travail 40. Le plan de travail 40 entoure le bord supérieur de la chemise de fabrication, et la chemise de fabrication permet de conserver une pièce fabriquée et la poudre non solidifiée qui l’entoure sur le plateau 50 dans un volume sensiblement clos.  According to the embodiment presented here, the plate 50 slides through an opening of the work plan 40 in a jacket 41 located under the work plan 40. The work plan 40 surrounds the upper edge of the manufacturing shirt, and the manufacturing jacket makes it possible to keep a manufactured part and the non-solidified powder which surrounds it on the plate 50 in a substantially closed volume.
Cependant, selon un autre mode de réalisation, le plateau 50 pourrait, par exemple, être juxtaposé au plan de travail 40.  However, according to another embodiment, the plate 50 could, for example, be juxtaposed with the work surface 40.
Le plateau 50 se situe dans le plan du plan de travail 40 en début de cycle de fabrication, puis dans un plan sensiblement parallèle au plan du plan de travail 40 au fur et à mesure que le plateau descend dans la chemise.  The plate 50 is located in the plane of the work plane 40 at the start of the manufacturing cycle, then in a plane substantially parallel to the plane of the work plane 40 as the plate descends into the jacket.
Le plateau de fabrication 50 peut être de forme circulaire, rectangulaire, carré, triangulaire, ...  The production plate 50 can be circular, rectangular, square, triangular, etc.
Pour la suite de la présente description, on pose un premier repère orthogonal XYZ, dans lequel les directions X et Y sont dans le plan du plateau 50 et la direction Z est normale au plan du plateau 50. For the remainder of this description, a first orthogonal coordinate system XYZ is placed, in which the directions X and Y are in the plane of the plate 50 and the direction Z is normal to the plane of the plate 50.
La machine 10 comprend en outre préférentiellement une enceinte close 1 1 dans laquelle sont positionnées la chambre de fabrication 20 et le plan de travail 40. The machine 10 also preferably comprises a closed enclosure 1 1 in which the manufacturing chamber 20 and the work surface 40 are positioned.
L’enceinte close 1 1 est adaptée pour être sensiblement étanche aux gaz. L’enceinte close 11 peut, par exemple, être constituée de panneaux polymères et/ou de panneaux métalliques.  The closed enclosure 1 1 is adapted to be substantially gas tight. The closed enclosure 11 can, for example, consist of polymer panels and / or metal panels.
L’enceinte close 1 1 peut être remplie d’un gaz inerte tel que l’azote ou un gaz noble (i.e. un gaz pris parmi l’hélium, le néon, l’argon, le krypton, le xénon ou le radon), ou d’un mélange de certains de ces gaz. En outre, la chambre de fabrication 20 comprend un chariot 60 coulissant au- dessus du plan de travail 40 et du plateau 50. The closed enclosure 1 1 can be filled with an inert gas such as nitrogen or a noble gas (ie a gas taken from helium, neon, argon, krypton, xenon or radon), or a mixture of some of these gases. In addition, the manufacturing chamber 20 comprises a carriage 60 sliding above the work surface 40 and the plate 50.
Le chariot 60 permet de répartir la poudre sur le plateau 50, ou sur une couche précédente de poudre, en vue de la fabrication d’une pièce.  The carriage 60 makes it possible to distribute the powder on the plate 50, or on a previous layer of powder, for the production of a part.
Le chariot 60 peut, par exemple, comprendre une raclette et/ou un rouleau.  The carriage 60 may, for example, include a squeegee and / or a roller.
Par ailleurs, la chambre de fabrication 20 comprend un organe d’apport de puissance 70 permettant de fondre une poudre métallique. L’organe d’apport de puissance 70 peut, par exemple, être une source de faisceau laser, de faisceau d’électrons, etc.  Furthermore, the manufacturing chamber 20 comprises a power supply member 70 for melting a metal powder. The power supply member 70 can, for example, be a source of laser beam, electron beam, etc.
Fonctionnement de la machine Machine operation
En fonctionnement, la machine 10 démarre dans une position dans laquelle le plateau 50 est situé sensiblement dans le même plan que le plan de travail 40.  In operation, the machine 10 starts in a position in which the plate 50 is located substantially in the same plane as the work plane 40.
Dès le lancement du procédé de fabrication, l’enceinte close 1 1 est fermée de manière étanche. L’oxygène en est chassé pour être remplacé par un gaz inerte. Cette disposition technique permet avantageusement d’améliorer la qualité de la fabrication, en évitant une éventuelle oxydation de la poudre métallique utilisée pour fabriquer une pièce. De plus, la raréfaction de l’oxygène dans l’enceinte close 1 1 diminue les risques d’inflammation ou d’explosion, ce qui rend la machine 10 plus sûre que certains dispositifs de l’art antérieur.  From the start of the manufacturing process, the closed enclosure 1 1 is sealed. Oxygen is removed from it to be replaced by an inert gas. This technical arrangement advantageously makes it possible to improve the quality of manufacturing, by avoiding possible oxidation of the metal powder used to manufacture a part. In addition, the depletion of oxygen in the closed chamber 11 reduces the risk of ignition or explosion, which makes the machine 10 safer than some devices of the prior art.
De la poudre est emmenée ou déposée devant le chariot 60 par un dispositif de distribution de poudre qui peut être un tiroir ou un injecteur, ou un réservoir de poudre disposé au-dessus du plan de travail. En variante, le chariot 60 se translate au-dessus d’un bac d’alimentation de poudre prévu dans le plan de travail 40.  Powder is taken or deposited in front of the carriage 60 by a powder distribution device which can be a drawer or an injector, or a powder reservoir disposed above the work surface. As a variant, the carriage 60 translates above a powder supply container provided in the worktop 40.
Ensuite le chariot 60 répartit de la poudre de fabrication additive, par exemple métallique, sur le plateau 50 et l’organe d’apport de puissance 70 fritte ou fait fondre la poudre, selon des coordonnées planaires choisies, pour fabriquer la pièce X.  Then the carriage 60 distributes additive manufacturing powder, for example metallic, on the plate 50 and the power supply member 70 sintered or melts the powder, according to chosen planar coordinates, to manufacture the part X.
Au fur et à mesure de la fabrication de la pièce, il est nécessaire que le plateau 50 diminue en altitude par rapport au plan de travail 40. En effet, la fabrication additive, consiste en un ajout successif de couches de matière d’une pièce. Le plan de fabrication, de fusion de la poudre, reste inchangé tout au long du processus. Ainsi, le plan de travail 40 ou le plateau 50 est déplacé pour que seule la couche en cours de fabrication se situe dans le plan du plan de travail 40. As the part is manufactured, it is necessary for the plate 50 to decrease in altitude relative to the work surface 40. In fact, additive manufacturing consists of a successive addition of layers of material from a part . The manufacturing and powder melting plan remains unchanged throughout the process. Thus, the work surface 40 or the plate 50 is moved so that only the layer being manufactured is located in the plane of the work surface 40.
Par exemple, de façon classique, le plateau 50 est mobile en translation par rapport à la chambre de fabrication 20, ce qui signifie que dans le référentiel de la chambre 20 le plateau 50 se déplace.  For example, conventionally, the plate 50 is movable in translation relative to the manufacturing chamber 20, which means that in the reference frame of the chamber 20 the plate 50 moves.
Un actionneur 42 permet le déplacement en translation du plateau 50 dans la chemise.  An actuator 42 allows the translational movement of the plate 50 in the jacket.
L’actionneur 42 est préférentiellement configuré pour provoquer des translations relatives toutes sensiblement selon une même direction, en l’espèce ladite direction de translation est dans un plan vertical de la chambre de fabrication 20.  The actuator 42 is preferably configured to cause relative translations all substantially in the same direction, in this case said direction of translation is in a vertical plane of the manufacturing chamber 20.
Il est précisé que, par actionneur, on entend un mécanisme contrôlé électroniquement et/ou pneumatiquement, capable de produire un mouvement de translation relatif entre les deux entités qu’il relie, en particulier un actionneur linéaire capable de créer un mouvement linéaire de compression (on comprendra que l’invention n’est pas limitée à ce type d’actionneurs). Chaque actionneur est ainsi typiquement de type vérin, avec une partie principale fixe, souvent tubulaire (appelée alors cylindre) dans lequel une pièce mobile (appelée tige de piston) est mobile en translation sur commande. Le vérin peut être purement électromécanique (on parle alors d’actionneur linéaire, par exemple à mécanisme vis-écrou), pneumatique, hydraulique ou tout autre type de technologies définies en fonction des caractéristiques d’effort, de vitesse, de course, de forme, de poids, et surtout de fiabilité, propres au domaine de la fabrication additive.  It is specified that, by actuator, is meant an electronically and / or pneumatically controlled mechanism capable of producing a relative translational movement between the two entities that it connects, in particular a linear actuator capable of creating a linear compression movement ( it will be understood that the invention is not limited to this type of actuators). Each actuator is thus typically of the jack type, with a fixed main part, often tubular (then called cylinder) in which a movable part (called piston rod) is movable in translation on command. The cylinder can be purely electromechanical (this is called a linear actuator, for example with a screw-nut mechanism), pneumatic, hydraulic or any other type of technology defined according to the characteristics of effort, speed, stroke, shape. , weight, and above all reliability, specific to the field of additive manufacturing.
L’homme du métier comprendra que l’invention n’est pas limitée aux vérins, et que le ou les actionneurs pourront utiliser d’autres technologies, et être par exemple des vis à billes ou des vis sans fin.  Those skilled in the art will understand that the invention is not limited to jacks, and that the actuator (s) may use other technologies, and be for example ball screws or worms.
La chambre 20 de fabrication peut comporter également une fosse 90 destinée à recevoir un excès de poudre et disposée dans la continuité du plateau de fabrication. Ainsi, la poudre en excès est amenée du plateau 50 de fabrication à la fosse 90 au moyen du rouleau du chariot 60 ou d'une lame (non représentée) disposée sur ledit chariot 60. Également, durant le fonctionnement de la machine 10, il résulte de la fusion des poudres métalliques, des fumées et projections qui doivent être évacuées. En effet, une des raisons est de ne pas perturber le faisceau laser pour ne pas diminuer la qualité de la fusion des poudres. The manufacturing chamber 20 may also include a pit 90 intended to receive an excess of powder and arranged in the continuity of the manufacturing plate. Thus, the excess powder is brought from the manufacturing plate 50 to the pit 90 by means of the roller of the carriage 60 or a blade (not shown) disposed on said carriage 60. Also, during the operation of the machine 10, it results from the fusion of metal powders, fumes and projections which must be evacuated. One of the reasons is not to disturb the laser beam so as not to reduce the quality of the powder fusion.
Evacuation des fumées Smoke evacuation
La machine 10 comprend un conduit d'entrée de gaz. Le gaz peut être issu de l’enceinte ou correspondre à un gaz distinct, issu d’une autre source, tel qu’un gaz inerte tel que l’azote ou un gaz noble (i.e. un gaz pris parmi l’hélium, le néon, l’argon, le krypton, le xénon ou le radon), ou d’un mélange de certains de ces gaz.  The machine 10 includes a gas inlet conduit. The gas can come from the enclosure or correspond to a separate gas, coming from another source, such as an inert gas such as nitrogen or a noble gas (ie a gas taken from helium, neon , argon, krypton, xenon or radon), or a mixture of some of these gases.
Le conduit d'entrée de gaz peut être agencé sous la forme d’une canne de soufflage 100. La canne de soufflage est configurée pour conduire un flux gazeux dans une première direction F1 sensiblement orthonormale au plateau de fabrication 50.  The gas inlet duct can be arranged in the form of a blowing rod 100. The blowing rod is configured to conduct a gas flow in a first direction F1 substantially orthonormal to the production plate 50.
Dans un mode de réalisation, lorsque le chariot 60 se déplace et se retrouve en bout de course en dehors du plateau de fabrication, ledit chariot se trouve alors positionné en dessous du flux de gaz issu de la canne de soufflage.  In one embodiment, when the carriage 60 moves and finds itself at the end of its travel outside the production plate, said carriage is then positioned below the flow of gas coming from the blowing rod.
Le flux F1 de gaz est ainsi dévié par le chariot, pour obtenir un flux de gaz dans une deuxième direction F2 tangente au plan de fabrication.  The gas flow F1 is thus deflected by the carriage, to obtain a gas flow in a second direction F2 tangent to the manufacturing plane.
Avantageusement, le chariot peut comprendre un dispositif d’orientation de flux, qui lorsque le chariot 60 se déplace et se retrouve en bout de course en dehors de la zone de fabrication, se trouve alors positionné en dessous du flux de gaz issu de la canne de soufflage. Le flux de gaz est ainsi dévié par le dispositif, pour obtenir un flux de gaz dans la deuxième direction F2 tangente au plan de fabrication.  Advantageously, the carriage can comprise a flow orientation device, which when the carriage 60 moves and finds itself at the end of travel outside the manufacturing zone, is then positioned below the flow of gas from the cane. blowing. The gas flow is thus diverted by the device, to obtain a gas flow in the second direction F2 tangent to the manufacturing plane.
Au fur et à mesure de son avancée sur le plateau de fabrication le flux de gaz se mélange aux fumées issues de la fusion des poudres. As it advances on the manufacturing platform, the gas flow mixes with the fumes from the powder fusion.
Le flux de gaz contenant les fumées s’élève donc du plateau de fabrication dans une troisième direction F3 par exemple sensiblement ascendante. La machine comprend également un boîtier 80 d’aspiration pouvant être relié à un circuit d’aspiration (non représenté permettant de filtrer et de traiter les gaz aspirés afin d’injecter à nouveau le gaz ainsi recyclé dans chambre 20 de fabrication. The flow of gas containing the fumes therefore rises from the production plate in a third direction F3, for example substantially ascending. The machine also includes a suction box 80 which can be connected to a suction circuit (not shown for filtering and treating the aspirated gases in order to re-inject the gas thus recycled in chamber 20 for manufacturing.
Le boîtier 80 d’aspiration est agencé en hauteur en regard du plateau de fabrication, une ouverture de captation des fumées du boîtier d’aspiration 80 étant préférentiellement dans un plan sensiblement perpendiculaire à la direction F3 du flux de gaz contenant les fumées de façon à capter un maximum dudit flux dans la direction F3.  The suction box 80 is arranged in height opposite the production plate, a fume capture opening of the suction box 80 preferably being in a plane substantially perpendicular to the direction F3 of the gas flow containing the fumes so as to capture a maximum of said flow in the direction F3.
Le boîtier 80 d’aspiration peut être disposé le long ou à proximité immédiate d’une paroi latérale de l’enceinte 30.  The suction housing 80 can be arranged along or in the immediate vicinity of a side wall of the enclosure 30.
Ledit boîtier 80 peut, par exemple, être réalisé en métal ou en plastique.  Said housing 80 can, for example, be made of metal or plastic.
En référence aux figures 2, 3 et 4, il est maintenant décrit plus en détail les caractéristiques du boîtier 80 d’aspiration. With reference to FIGS. 2, 3 and 4, the characteristics of the suction housing 80 are now described in more detail.
Le boîtier d’aspiration comporte une partie 81 inférieure comportant un conduit d’aspiration 82 par exemple sensiblement parallèle à la paroi latérale sur laquelle le boîtier 80 est disposé.  The suction housing has a lower part 81 comprising a suction duct 82 for example substantially parallel to the side wall on which the housing 80 is disposed.
La largeur du conduit et/ou la largeur de la partie inférieure peut être configurée pour venir s’adapter au circuit d’aspiration de la chambre de fabrication 20. Par exemple, la partie 81 inférieure peut s’adapter à l’entrée du circuit d’aspiration par des moyens de fixation, tel que par clipsage.  The width of the duct and / or the width of the lower part can be configured to adapt to the suction circuit of the manufacturing chamber 20. For example, the lower part 81 can adapt to the inlet of the circuit suction by fixing means, such as by clipping.
Le boîtier d’aspiration comporte une partie supérieure 83 en saillie en regard de la partie inférieure 81 et en regard de la paroi de la chambre de fabrication.  The suction housing has an upper part 83 projecting opposite the lower part 81 and facing the wall of the manufacturing chamber.
La partie supérieure 83 comporte par exemple un profil en forme de trapèze rectangle. Les côtés du trapèze comportant les angles rectangles étant proches de la paroi sur laquelle le boîtier 80 est disposé, le coté de longueur la plus importante du trapèze étant distant de ladite paroi.  The upper part 83 comprises for example a profile in the shape of a rectangular trapezoid. The sides of the trapezium having the rectangular angles being close to the wall on which the housing 80 is arranged, the side of the greatest length of the trapezoid being distant from said wall.
Le boîtier d’aspiration comporte également une bouche d’aspiration 84, comprise dans la partie 83 en saillie. La bouche 84 d’aspiration est composée par un évidement dans la partie 83 en saillie, préférentiellement de forme oblongue. L’évidement peut être également de forme circulaire, rectangulaire, ovale, etc. L’évidement est débouchant dans sa partie inférieure pour être en connexion avec le conduit 82 d’aspiration. Les angles de l’évidement peuvent être arrondis. The suction housing also includes a suction mouth 84, included in the projecting part 83. The suction mouth 84 is composed by a recess in the projecting part 83, preferably of oblong shape. The recess can also be circular, rectangular, oval, etc. The recess opens out in its lower part to be in connection with the suction duct 82. The angles of the recess can be rounded.
Dans sa section inférieure, la bouche 84 d’aspiration est préférentiellement dans la continuité du conduit 82 d’aspiration. Ainsi, la longueur du conduit 82 peut être sensiblement égale à la longueur de la bouche 84 d’aspiration.  In its lower section, the suction mouth 84 is preferably in the continuity of the suction duct 82. Thus, the length of the conduit 82 can be substantially equal to the length of the suction mouth 84.
Etant donné la configuration en saillie de la partie 83 supérieure, la bouche 84 d’aspiration est inclinée en regard de la partie 81 inférieure.  Given the projecting configuration of the upper part 83, the suction mouth 84 is inclined opposite the lower part 81.
Préférentiellement, la partie avant de la bouche 84 d’aspiration (proche du plateau 50 de fabrication) est inclinée d’environ 140 à 161 °, préférentiellement d’environ 151 ° en regard d’un plan vertical.  Preferably, the front part of the suction mouth 84 (close to the manufacturing plate 50) is inclined by approximately 140 to 161 °, preferably by approximately 151 ° facing a vertical plane.
Également, préférentiellement, la partie 84a arrière de la bouche 84 d’aspiration est également comprise dans un plan incliné d’environ 140 à 161 °, préférentiellement d’environ 151 °, en regard d’un plan vertical.  Also, preferably, the rear portion 84a of the suction mouth 84 is also included in an inclined plane of approximately 140 to 161 °, preferably of approximately 151 °, facing a vertical plane.
Avantageusement, l’inclinaison de la bouche 84 d’aspiration est configurée pour que la bouche d’aspiration soit préférentiellement dans un plan sensiblement perpendiculaire à une direction des fumées. Ainsi, l’inclinaison de la bouche 84 d’aspiration permet de capter de façon optimale le maximum de flux comprenant les fumées de fabrication.  Advantageously, the inclination of the suction mouth 84 is configured so that the suction mouth is preferably in a plane substantially perpendicular to a direction of the fumes. Thus, the inclination of the suction mouth 84 makes it possible to optimally capture the maximum flow including the manufacturing fumes.
Également, de façon préférentielle, la longueur de la bouche 84 d’aspiration du boîtier 80 est égale à au moins la largeur du plateau de fabrication de façon à capter un maximum du flux F3.  Also, preferably, the length of the suction mouth 84 of the housing 80 is equal to at least the width of the production plate so as to capture a maximum of the flow F3.
Le boîtier d’aspiration peut également comporter des moyens de fixations 85 à la paroi, par exemple agencés au-dessus de la partie en saillie. Ces moyens de fixations 85 peuvent par exemple comprendre des trous de fixations à une paroi de l’enceinte 30.  The suction box can also include means for fixing 85 to the wall, for example arranged above the projecting part. These fastening means 85 can for example include fixing holes to a wall of the enclosure 30.

Claims

REVENDICATIONS
1. Machine (10) de fabrication additive comprenant un boîtier (80) d’aspiration configuré pour l’évacuation des fumées résultant de la fabrication additive d’une pièce, ladite machine (10) comprenant une enceinte (30), un plateau (50) de fabrication, et ledit boîtier (80) d’aspiration comprenant 1. Additive manufacturing machine (10) comprising a suction housing (80) configured for the evacuation of the fumes resulting from the additive manufacturing of a part, said machine (10) comprising an enclosure (30), a tray ( 50) for manufacturing, and said suction housing (80) comprising
une partie (81 ) inférieure disposée le long d’une paroi latérale de l’enceinte (30), comportant un conduit (82) d’aspiration, et  a lower part (81) disposed along a side wall of the enclosure (30), comprising a suction duct (82), and
une partie (83) supérieure en saillie en regard de la partie (81 ) inférieure et en regard de la paroi latérale de l’enceinte (30), comprenant une ouverture (84) débouchant dans l’enceinte (30) et en liaison avec le conduit (82) d’aspiration, la partie (83) supérieure étant inclinée de telle façon que l’ouverture est orientée en direction du plateau (50) de fabrication.  an upper part (83) projecting opposite the lower part (81) and facing the side wall of the enclosure (30), comprising an opening (84) opening into the enclosure (30) and in connection with the suction duct (82), the upper part (83) being inclined so that the opening is oriented towards the manufacturing plate (50).
2. Machine (10) de fabrication additive selon la revendication précédente, dans laquelle la partie (83) supérieure est inclinée d’un angle compris entre 140 à 161 °, vis à vis d’un plan vertical. 2. Machine (10) for additive manufacturing according to the preceding claim, in which the upper part (83) is inclined at an angle between 140 to 161 °, with respect to a vertical plane.
3. Machine (10) de fabrication additive selon l’une des revendications précédentes, dans laquelle la longueur de l’ouverture (84) du boîtier (80) d’aspiration est environ égale à la largeur du plateau (50) de fabrication. 3. Additive manufacturing machine (10) according to one of the preceding claims, in which the length of the opening (84) of the suction housing (80) is approximately equal to the width of the manufacturing plate (50).
4. Machine (10) de fabrication additive selon l’une des revendications précédentes, dans laquelle l’ouverture (84) du boîtier d’aspiration (80) est disposée selon un axe du plateau (50) de fabrication. 4. Machine (10) for additive manufacturing according to one of the preceding claims, wherein the opening (84) of the suction housing (80) is arranged along an axis of the plate (50) of manufacture.
5. Machine (10) de fabrication additive selon l’une des revendications précédentes, dans laquelle l’ouverture du boîtier (80) d’aspiration est de forme oblongue. 5. Machine (10) for additive manufacturing according to one of the preceding claims, in which the opening of the suction housing (80) is oblong.
6. Machine (10) de fabrication additive selon l’une des revendications précédentes, dans laquelle la hauteur de l’ouverture est d’au moins 60mm. 6. Machine (10) for additive manufacturing according to one of the preceding claims, in which the height of the opening is at least 60mm.
PCT/FR2019/052724 2018-11-16 2019-11-15 Additive manufacturing machine comprising a suction box WO2020099805A1 (en)

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FR1871566 2018-11-16
FR1871566A FR3088574B1 (en) 2018-11-16 2018-11-16 ADDITIVE MANUFACTURING MACHINE INCLUDING A SUCTION BOX

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140271965A1 (en) * 2013-03-15 2014-09-18 Renishaw Plc Selective laser solidification apparatus and method
US20170216916A1 (en) * 2014-03-28 2017-08-03 Eos Gmbh Electro Optical Systems Device and method for producing a three-dimensional object layer-by-layer
US20180133796A1 (en) * 2016-11-16 2018-05-17 Sodick Co., Ltd. Laminating and shaping apparatus
EP3378584A1 (en) * 2017-03-24 2018-09-26 SLM Solutions Group AG Device and method for producing a three-dimensional workpiece

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140271965A1 (en) * 2013-03-15 2014-09-18 Renishaw Plc Selective laser solidification apparatus and method
US20170216916A1 (en) * 2014-03-28 2017-08-03 Eos Gmbh Electro Optical Systems Device and method for producing a three-dimensional object layer-by-layer
US20180133796A1 (en) * 2016-11-16 2018-05-17 Sodick Co., Ltd. Laminating and shaping apparatus
EP3378584A1 (en) * 2017-03-24 2018-09-26 SLM Solutions Group AG Device and method for producing a three-dimensional workpiece

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