EP4419312A1 - Machine d'impression en 3d equipée d'une chambre secondaire transparente permettant une fabrication sous atmosphère contrôlée - Google Patents
Machine d'impression en 3d equipée d'une chambre secondaire transparente permettant une fabrication sous atmosphère contrôléeInfo
- Publication number
- EP4419312A1 EP4419312A1 EP22801846.1A EP22801846A EP4419312A1 EP 4419312 A1 EP4419312 A1 EP 4419312A1 EP 22801846 A EP22801846 A EP 22801846A EP 4419312 A1 EP4419312 A1 EP 4419312A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- main
- chamber
- secondary chamber
- main plate
- nozzle
- 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.)
- Pending
Links
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
- B29C64/20—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
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/227—Driving means
- B29C64/232—Driving means for motion along the axis orthogonal to the plane of a layer
-
- 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
- B29C64/245—Platforms or substrates
-
- 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
- B29C64/295—Heating elements
-
- 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 [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- 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
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
Definitions
- the present invention relates to the general field of three-dimensional printing machines which make it possible to manufacture parts of very different shapes by depositing a malleable printing material in successive layers, by means of a nozzle.
- Such machines are described in particular by document US Pat. No. 6,722,872, which proposes a printing machine comprising a chamber which forms an oven delimited by a wall, and inside which there is a plate intended to supporting the part being printed, as well as the nozzle making it possible to bring the constituent material of said part.
- a drive system comprising an elevator to move the plate vertically, and crossed translation tables to horizontally drive the nozzle responsible for delivering the material constituting the part.
- Said translation tables are equipped with bellows which seal the chamber.
- the heating means of the oven may even be insufficient to implement certain printing materials which require a high temperature to guarantee good joining of the successive layers of the printing material in question, which then limits the industrial capacities of the machine.
- the objects assigned to the invention therefore aim to remedy the aforementioned drawbacks and to propose a new three-dimensional printing machine which makes it possible to produce, by means of a compact and inexpensive machine, prints in a wide range temperatures, including high temperatures, while ensuring effective control of the printing process through convenient and reliable monitoring of the part being printed.
- a three-dimensional printing machine comprising a main chamber which is delimited by a first wall and inside which there is a main plate, intended to support a part being printed, as well as a nozzle arranged to feed and deposit in successive layers a printing material in order to gradually build up said part supported by the main plate, said machine also comprising a drive system making it possible to drive a relative displacement of the main plate with respect to the nozzle so that said nozzle can draw the shape of the part, and the first wall comprising at least one main observation window which is transparent over at least part of the visible light spectrum and which allows an observer located outside the main chamber to view the main plate, said machine being characterized in that the main chamber contains a secondary chamber whose volume is strictly less than that of the main chamber and which is delimited by a second wall carried by the main plate, said second wall separating said secondary chamber from the main chamber and having on the one hand at least one insertion orifice through which the nozzle penetrates into the secondary chamber in order to be able to
- the secondary chamber according to the invention makes it possible to confine the working area where the nozzle produces the part in a volume which is smaller than that of the main chamber, and of which it is therefore possible to precisely control the precise temperature, and this while maintaining perfect visual monitoring of the printing process, since the second wall which delimits the secondary chamber, and more particularly the second observation window integrated into said wall, advantageously screens heat transfers but not vision.
- the reduced volume of the secondary chamber, and the partitioning provided by the second wall which delimits said secondary chamber advantageously make it possible to bring the interior of the secondary chamber to a high temperature with a less energy expenditure, without it being necessary to bring the entire main chamber, which surrounds said secondary chamber, to such a high temperature, and moreover without this thermally affecting the mechanical or electronic components of the machine, and in particular the components of the drive system, which can preferably be located outside the secondary chamber, but if necessary inside the main chamber.
- the relative arrangement of the observation windows according to the invention advantageously preserves a wide visual field of observation of the part and therefore allows the user to exercise direct visual monitoring of the process, which is particularly economical. and reliable, without the need for a camera circuit.
- Figure 1 shows, in a perspective view, a module intended to equip the main plate of a three-dimensional printing machine to integrate said machine into a secondary chamber according to the invention.
- Figure 2 is a front projection view of the module of Figure 1.
- Figure 3 is a top view of the module of Figures 1 and 2, in section in a horizontal plane.
- Figure 4 shows, in a schematic front sectional view in a vertical plane, a machine according to the invention equipped with a module according to Figures 1 to 3.
- Figures 5A, 5B, 5C represent, according to partial sectional views in a vertical plane, the progressive descent of the main plate of the machine of Figure 4 as the part is printed and the corresponding compensation effected by the telescopic sliding of the second wall which delimits the secondary chamber, FIG. 5A corresponding to the starting configuration, the main plate being in the high position, FIG. 5B corresponding to an intermediate configuration, the main plate having been lowered relative to its starting position, and FIG. 5C corresponding to the end-of-travel configuration, the main plate being in the low position, that is to say lowered to the maximum.
- the present invention relates to a three-dimensional printing machine 1.
- said machine 1 comprises a main chamber 2 which is delimited by a first wall 3.
- the main chamber 2 thus forms a closed enclosure, inside which the printing operation of a part 4 will take place.
- a main plate 5 Inside the main chamber 2 is a main plate 5, intended to support a part 4 being printed.
- said main plate 5 forms a flat and horizontal surface.
- a nozzle 6 Inside said main chamber 2 is also a nozzle 6 which is arranged to bring and deposit in successive layers a printing material 7 in order to gradually form said part 4 supported by the main plate 5.
- Any material capable of being made sufficiently malleable to pass through the nozzle 6, to adhere to itself in superimposed layers, then to harden after having been deposited may be suitable as printing material 7.
- the printing material 7 will be a thermoplastic material, which will be softened or even melted, for example by extrusion, to be applied by the nozzle 6.
- the printing material 7 will be deposited in the form of a continuous bead emitted by the nozzle 6.
- the main chamber 2, and if necessary the nozzle 6 and/or the main plate 5, will include heating means (not shown) making it possible to increase the temperature of the main chamber 2, and if necessary of the nozzle 6 and/or of the main plate 5 in order to guarantee the malleability of the printing material 7 and, above all, the good adhesion between the different layers of said printing material 7 which are successively deposited to form the part 4.
- the machine 1 also includes a drive system 10 which controls a relative movement of the main plate 5 relative to the nozzle 6 so that said nozzle 6 can draw the shape of room 4.
- the displacement system 10 will preferably be arranged to offer at least three degrees of freedom to the main plate 5 with respect to the nozzle 6, namely one degree of freedom in vertical translation, and two degrees of freedom in horizontal translation, according to two horizontal axes X5, Y5 perpendicular to each other, so that You can move the nozzle 6 relative to the main plate 5 (and vice versa) in the three directions of space.
- the drive system 10 may thus be arranged to be able to move the nozzle 6 exclusively according to the three degrees of freedom with respect to a main plate 5 which would be fixed with respect to the frame of the machine 1 and therefore with respect to the main chamber 2, or on the contrary to be able to move the main plate 5 exclusively according to the three degrees of freedom with respect to a nozzle 6 which would be fixed with respect to the frame and to the main chamber 2, or even to distribute the degrees of freedom between the nozzle 6 on the one hand and the main plate 5 on the other hand, for example by providing to provide the main plate 5 with only one degree of freedom in vertical translation with respect to the frame and to the main chamber 2 while the nozzle 6 is movable in the two horizontal directions with respect to this same frame and to the main chamber 2, or vice versa, to provide the nozzle 6 with a single degree of freedom in vertical translation while the main plate 5 is movable exclusively in the two horizontal degrees of freedom.
- the degrees of freedom in translation can be ensured by any appropriate motorized guide means.
- an elevator comprising for example a gantry provided with screws which extend vertically and which cooperate with ball bearings fixed to the member to be guided. concerned, here for example the main plate 5.
- the degrees of freedom in horizontal translation may in particular be achieved by means of crossed translation tables comprising carriages guided by horizontal rails, and driven for example by a ball screw system driven by a motor.
- the motorization of the drive system 10, and more particularly of each translation axis, will preferably be provided by electric motors, preferably controlled by an electronic control unit.
- the first wall 3, which delimits the main chamber 2 comprises at least one main observation window 11 which is transparent over at least part of the visible light spectrum, more preferably over the entire visible spectrum, and which allows an observer located outside the main chamber 5 to view the main plate 5, and therefore, if necessary, the part 4 being printed which is located on said main plate 5.
- visible spectrum is meant, by convention, the range of wavelengths which extends from 380 nm, the limit of ultraviolet radiation, to 780 nm, the limit of infrared radiation.
- the transmittance is 1 and the optical density DO is zero.
- the transparency of the main observation window 11 will advantageously be sufficient to allow the observer to clearly distinguish, through said main observation window 11, the contours of the observed object, here the main plate 5 and /or part 4 carried by said main plate 5.
- the main observation window 11 may preferably be formed by a transparent panel integrated into a door which is made in the first wall 3 to, when said door is open, give access to the main chamber 2 and to the main plate. 5 and, when said door is closed, keep the main chamber 2 closed.
- the main observation window 11 may for example be made of glass, acrylic, polycarbonate or PMMA (“Plexiglas”), with a thickness of between 3 mm and 10 mm.
- the constituent material of the main observation window 11 will also preferably be colorless.
- the main chamber 2 contains a secondary chamber 20 whose volume is strictly less than the volume of the main chamber 2 and which is delimited by a second wall 21 carried by the main plate 5.
- the overall internal volume of the secondary chamber 20, such as said volume is delimited by the envelope materialized by the second wall 21, is preferably between 200 cm3 and 600 cm3.
- the second wall 21 separates said secondary chamber 20 from the main chamber 2 and has on the one hand at least one insertion orifice 22 through which the nozzle 6 enters the secondary chamber 20 in order to be able to deposit the material of impression 7 in said secondary chamber 20 and thus generate part 4 within said secondary chamber 20, and on the other hand at least one secondary observation window 23, which is transparent over at least part of the visible light spectrum, of preferably over the entire visible light spectrum, and placed opposite the main observation window 11, so that an observer 25 standing outside the main chamber 2 can visualize by direct ocular observation, according to a optical path 24 which successively crosses the main observation window 11 then the secondary observation window 23, the interior of the secondary chamber 20 and the part 4 which is being printed in said secondary chamber 20.
- the second wall 21 advantageously makes it possible to separate the secondary chamber 20 from the atmosphere which reigns in the main chamber 2 and which therefore surrounds the second wall 21 outside the secondary chamber 20.
- the volume of the secondary chamber 20 is preferably entirely contained inside the main chamber 2 which encloses said secondary chamber 20, said secondary chamber 20 thus being strictly included inside the main chamber 2.
- the second wall 21 is set back from the first wall 3, towards the inside of the main chamber 2.
- the use of the secondary chamber 20 according to the invention makes it possible to reduce and confine the working area, in which the nozzle 6 operates when it shapes the part 4, at the interior of a closed volume which is strictly smaller than the total volume which is available in the main chamber 2, and therefore has a fraction of said total volume which is available in the main chamber 2, in order to better control the conditions of printing of said part 4, in particular the temperature.
- the arrangement of the observation windows 11, 23 according to the invention allows direct monitoring, without a camera, with the naked eye, of the interior of the chamber. secondary chamber 20, and therefore of the printing process which takes place inside said secondary chamber 20.
- the addition of the secondary chamber 20 according to the invention will not have the effect of masking the work area from the observer, nor of degrading the quality of process monitoring.
- the main observation window 11 and the secondary observation window 23 will preferably be located in direct alignment with each other, in order to make the interior of the secondary chamber 20 visible from the exterior of the main chamber 2, and therefore from the exterior of the machine 1 along a rectilinear optical path, without mirror return.
- Such a structure will indeed be particularly simple and will allow very intuitive visual monitoring.
- the secondary observation window 23 will preferably present, over at least part and preferably over the entire visible light spectrum, a transmittance T equal to or greater than 25% , preferably between 50% and 95%.
- the secondary observation window 23 which will preferably be particularly resistant to heat, may for example be made of glass, tempered glass, or borosilicate glass (“Pyrex”), with a thickness of between 3 mm and 10mm.
- the constituent material of the secondary observation window 23 will also preferably be colorless.
- the second wall 21 comprises: i) a base 30 which rests vertically on the main plate 5 and which has a horizontal reception face 30A intended to support the part 4 being printed, ii) a sleeve 31 which forms a side wall which extends vertically from the reception face 30A of the base, according to a closed contour around a central axis Z31 vertical normal to said reception face 3OA, and of which at least a portion forms the secondary observation window 23, and iii) a cover 32 which caps the jacket 31, at a vertical distance from the horizontal reception face 30A of the base 30, so as to close the secondary chamber 20, and which has the insertion orifice 22 which allows the nozzle 6 to be engaged inside said secondary chamber 20.
- Such a structure has in particular the advantage of great simplicity of implementation at lower cost, and provides good visibility of the work area, that is to say of the closed space of the room.
- secondary 20 which extends between the base 30, the cover 32, and the sleeve 31 which vertically connects said base 30 to said cover 32 and which forms the radial limit of said secondary chamber 20 with respect to the central axis Z31.
- the jacket 31 will advantageously cooperate with the base 30 and with the cover 32 in a sealed manner, in order to separate the atmosphere which reigns in the secondary chamber 20 from the surrounding atmosphere which reigns in the main chamber 2, and in which bathes the secondary chamber 20.
- the cover 32 will also preferably be at least partly, or even entirely, transparent, in order to form a portion of the secondary observation window 23, in addition to the secondary observation window portion 23 formed by the sleeve 31.
- the cover may include a transparent disc 33, here arranged horizontally and placed on the upper edge of the sleeve 31.
- the material used and the degree of transparency of the cover 32, and more particularly of the transparent disc 33, may be identical to those already specified above with reference to the sleeve 31.
- a transparent cover 32 will further improve the visibility of the interior space of the secondary chamber 20 and consequently of the contents of said secondary chamber, under different viewing angles from the outside of master bedroom 2.
- the insertion orifice 22 may be pierced through the cover 32, and more particularly through the transparent disc 33, preferably substantially according to the direction of the central axis Z31 as can be seen in FIGS. 1 and 4, so that the nozzle 6 points into the secondary chamber 20 from above, in the direction of the base 30, and more particularly in the direction of the face of reception 30A of said base 30, which will receive the successive layers of printing material 7 deposited by the nozzle 6.
- a clamping mechanism 34 will fix the nozzle 6 on the cover 32.
- the sleeve 31 forms a ring, a ring which is transparent over at least 180 degrees, preferably at least 270 degrees, and more preferably over 360 degrees around of the central axis Z31 vertical.
- said ring will have a circular base, and even more preferably will form a right cylinder with a circular base.
- the sleeve 31 will be formed in one piece in a transparent material.
- the secondary observation window 23 thus offering a very wide visual field.
- the drive system 10 makes it possible to move the main plate 5, and consequently the base 30, in translation along the central axis Z31 vertical with respect to the cover 32.
- the drive system 10 may include an elevator to move the main plate 5 vertically.
- This elevator may be placed in the main chamber 2, between the main plate 5 and the first wall 3.
- the sleeve 31 can then form with the base 30, as is clearly visible in Figures 4, 5A, 5B and 5C, a telescopic structure 35, and be prestressed by one or more springs 36 in the direction of said cover 32, so that said sleeve 31 can slide relative to base 30 along vertical central axis Z31 and remain pressed abutting against cover 32, and therefore more particularly in sealed contact with said cover 32, while main plate 5 , and therefore the base 30, moves relative to the cover 32, and in particular moves away from the cover, in translation along said vertical central axis Z31.
- this simple telescopic structure 35 makes it possible to retain the confinement of the secondary chamber 20 by adapting in real time the height of the side wall of the secondary chamber by a differential translation movement of the sleeve 31 relative to the base 30 , regardless of the vertical distance between the base 30 and the cover 32.
- the sleeve 31 fits coaxially and slidingly with a shaft 30B of the base 30, of cylindrical shape matching that of the radially internal face 31 in of the sleeve 31, and which guides the vertical translation of said sleeve 31 relative to base 30.
- the sleeve 31 is formed by a rigid ring which advantageously retains its shape, without deformation, during the vertical movements of the main plate 5 and of the base 30, since the lowering of the main plate 5 and of the base 30 is compensated by a corresponding elevation, in vertical translation, of the sleeve 31 which moves in one block with respect to the base 30. This avoids any wear of the sleeve 31, and more generally of the second wall 21 and of the secondary observation window 23, by deformation.
- a slight radial play will be provided between the radially outer face 30B_out of the shaft 30B and the radially inner face 3 l in of the sleeve 31, in order to allow the relative sliding of the sleeve 31 on the shaft 30B, and in order to avoid abrasion phenomena likely to scratch the sleeve 31, and therefore the secondary observation window 23.
- seals for example O-rings or lip seals
- the drive system 10 is designed to be able to generate a relative movement of the main plate 5, and therefore of the base 30, relative to the cover 32 along a first horizontal axis X5 and along a second horizontal axis Y5 perpendicular to the first horizontal axis X5.
- cross translation tables can be used for this purpose, as mentioned above, which can be located in the main chamber 2 or even outside of said main chamber 2.
- cover 32 which carries nozzle 6, cooperates with sleeve 31 in horizontal plane contact, so that said cover 32 can slide relative to said sleeve 31 in a horizontal plane P32 parallel to each of the first and second horizontal axes X5, Y5, while remaining in contact with said sleeve 31 and thus keeping the secondary chamber 20 closed, during the relative horizontal movements of the main plate 5 with respect to the cover 32 and the nozzle 6.
- the diameter of the cover 32, and more particularly of the transparent disc 33, will of course be adapted to cover not only the overall diameter of the sleeve 31, but also extend beyond the radially outer wall of the sleeve 31 of a value which is at least equal to the maximum possible horizontal stroke of the main plate 5 along the horizontal axes X5, Y5.
- the seal between the upper edge of the sleeve 31 and the underside of the cover 32 placed flat on said sleeve 31 can be ensured, for example, either by simple smooth solid contact between the cover 32 and the sleeve 31, any leaks then being negligible, or by the addition of an O-ring housed in an annular groove dug in the edge of the sleeve 31.
- the machine 1 comprises an atmosphere control circuit 40 which makes it possible to place the secondary chamber 20 under a controlled atmosphere whose composition and/or temperature differ from those of the primary atmosphere which prevails in the main chamber 2, the second wall 21 providing for this purpose a tight separation (to the gases making up said atmospheres) between the secondary chamber 20 and the main chamber 2.
- an atmosphere control circuit 40 which makes it possible to place the secondary chamber 20 under a controlled atmosphere whose composition and/or temperature differ from those of the primary atmosphere which prevails in the main chamber 2, the second wall 21 providing for this purpose a tight separation (to the gases making up said atmospheres) between the secondary chamber 20 and the main chamber 2.
- an inert gas such as dinitrogen, or any other suitable gas or gas mixture, which will be carried by the circuit 40 at the desired temperature, pressure and flow rate conditions, may be used in the secondary chamber.
- the atmosphere control circuit 40 forms a recirculation loop 41 in a closed circuit, at least part of which is located outside the secondary chamber 20.
- the same gaseous mixture can thus be successively injected into the secondary chamber 20, to condition the atmosphere, then extracted from the secondary chamber 20, then reprocessed, and in particular heated and/or filtered, to then be reinjected into the secondary chamber 20, and so on.
- the fact of deporting part of the circuit 40, in particular the recirculation loop 41, outside the secondary chamber 20, for example by placing said part of the circuit in the main chamber 2 or even outside the main chamber 2 makes it possible to maximize the useful volume available within the secondary chamber 20.
- the atmosphere control circuit 40 comprises a heater 42 to raise the temperature prevailing inside the secondary chamber 20.
- said heater 42 is specific to circuit 40, and in particular separate from any heating means for main chamber 2 or nozzle 6, in order to act specifically on the temperature of secondary chamber 20.
- said heating device 42 could be in the secondary chamber 20.
- said heating device 42 will preferably be located on the portion of the recirculation loop 41 which is outside the secondary chamber 20.
- the heating device 42 may be formed by a heating tube, such as a ceramic tube provided with electric heating resistors, through which circulates the gas flow which is captive to the recirculation loop 41 and the secondary chamber. 20.
- the atmosphere control circuit 40 comprises a distributor member 43, which is interposed vertically between the main plate 5 and the receiving face 30A of the base 30, and which has on the one hand a supply distributor 44, which injects into the secondary chamber 20 a gaseous flow constituting the controlled atmosphere, and on the other hand an evacuation manifold 45 which evacuates said gaseous flow from said secondary chamber 20.
- the distributor member 43 is preferably housed inside the hollow shaft 30B of the base 30, and communicates with the secondary chamber 20 by means of holes 46, 47 dedicated respectively to the admission and to the evacuation of the gas flow.
- said holes 46, 47 are advantageously arranged in the peripheral zone of the receiving face 30A of the base 30, typically at a distance from central axis Z31 which is equal to or greater than 75 % of the internal radius of the sleeve 31 (or in a substantially equivalent manner, equal to or greater than 75% of the external radius of the barrel 30B and of the reception face 30A), so as not to significantly encroach on said reception face 30A, and in particular in order to clear the central portion of said receiving face 30A which receives part 4.
- An intake pipe 48 connects the recirculation loop 41 to the intake manifold 44, in order to inject the gaseous mixture therein, here coming from the heating device 42.
- An evacuation pipe 49 connects the evacuation manifold 45 to said recirculation loop 41, here intended for the heating device 42.
- the machine 1 may be convertible, in that it may be selectively configured either according to a first configuration, in which said machine comprises a secondary chamber 20 as described above, in order to produce part 4 inside said secondary chamber 20, or according to a second configuration, in which said machine has no secondary chamber 20, in order to produce part 4 directly in main chamber 2, directly on main plate 5, and this in particular in order to be able to produce parts which would be too bulky to fit in the secondary chamber 20 and/or whose production would not require placing the enclosure in a particular atmosphere or at a particularly high temperature.
- the secondary chamber 20 may be removable and extractable from the machine 1, so that the main plate 5 can alternatively be either equipped with a secondary chamber 20, to be placed in the first configuration, or rid of said secondary chamber 20, to appear bare, in accordance with the second configuration.
- the invention may relate as such to a module 50 intended to equip a three-dimensional printing machine 1 comprising a main chamber 2 delimited by a first wall 3 provided with a main observation window 11 , which is transparent over at least part of the visible light spectrum, main chamber 2 inside which there is a main plate 5, intended to support a part 4 being printed, as well as a nozzle 6 arranged to feed and deposit in successive layers a printing material 7 in order to gradually form said part 4 supported by main plate 5, said module 50 comprising a base 51 which allows said module 50 to be fixed on main plate 5 of machine 1, and which carries a secondary chamber 20 delimited by a second wall 21 provided on the one hand with an orifice insertion 22 allowing the nozzle 6 to penetrate into the secondary chamber 20 in order to be able to generate the part 4 within said secondary chamber 20, and on the other hand a secondary observation window 23, transparent on at least part of the visible light spectrum and arranged to be placed opposite the main observation window 11 of the machine 1.
- the secondary chamber 20 of said module 50 may of course have any characteristic described above, and in particular have a telescopic arrangement comprising a base 30, fixed to the base 51, a sliding sleeve 31 and a cover 32.
- the module 50 will be removable, using for this reversible fixing means, such as screws, to couple the base 51 to the main plate 5 and then to uncouple said base 51 from the main plate 5, so that the module 50 can be removed and replaced by a smooth plate element in order to reconstitute the bare main plate 5, and vice versa.
- this reversible fixing means such as screws
- kits may of course be provided comprising on the one hand the module 50, and on the other hand the smooth plate element, which are interchangeable to pass from the first configuration to the second configuration and vice versa. .
- the invention also relates to a method for using a machine 1 according to the invention, and to a method for reconfiguring a three-dimensional printing machine 1 during which the configuration of printing chosen from the first and second configurations mentioned above, and the machine is converted accordingly by placing therein, and more particularly by placing on the main plate 5 of said machine 1, either the module 50 or respectively the plate element smooth.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Toxicology (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2111177A FR3128397B1 (fr) | 2021-10-21 | 2021-10-21 | Machine d’impression en 3d équipée d’une chambre secondaire transparente permettant une fabrication sous atmosphère contrôlée |
| PCT/FR2022/051944 WO2023067271A1 (fr) | 2021-10-21 | 2022-10-14 | Machine d'impression en 3d equipée d'une chambre secondaire transparente permettant une fabrication sous atmosphère contrôlée |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4419312A1 true EP4419312A1 (fr) | 2024-08-28 |
Family
ID=79018887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22801846.1A Pending EP4419312A1 (fr) | 2021-10-21 | 2022-10-14 | Machine d'impression en 3d equipée d'une chambre secondaire transparente permettant une fabrication sous atmosphère contrôlée |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250229489A1 (fr) |
| EP (1) | EP4419312A1 (fr) |
| CN (1) | CN118103196A (fr) |
| FR (1) | FR3128397B1 (fr) |
| WO (1) | WO2023067271A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN121669974A (zh) * | 2026-02-10 | 2026-03-17 | 厦门徕泽丰科技有限公司 | 一种腔体的密封结构及金属粉末增材制造设备 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6722872B1 (en) | 1999-06-23 | 2004-04-20 | Stratasys, Inc. | High temperature modeling apparatus |
| US20180169971A1 (en) * | 2016-12-21 | 2018-06-21 | The Boeing Company | Fused filament fabrication machine |
| KR101843323B1 (ko) * | 2017-10-11 | 2018-03-28 | 이수연 | 3d 프린터 |
| TWI716765B (zh) * | 2018-11-12 | 2021-01-21 | 三緯國際立體列印科技股份有限公司 | 3d列印裝置 |
| CN112026171A (zh) * | 2020-08-07 | 2020-12-04 | 东莞理工学院 | 一种多喷头3d打印装置 |
-
2021
- 2021-10-21 FR FR2111177A patent/FR3128397B1/fr active Active
-
2022
- 2022-10-14 WO PCT/FR2022/051944 patent/WO2023067271A1/fr not_active Ceased
- 2022-10-14 CN CN202280069928.8A patent/CN118103196A/zh active Pending
- 2022-10-14 EP EP22801846.1A patent/EP4419312A1/fr active Pending
- 2022-10-14 US US18/703,247 patent/US20250229489A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023067271A1 (fr) | 2023-04-27 |
| US20250229489A1 (en) | 2025-07-17 |
| FR3128397B1 (fr) | 2023-11-24 |
| CN118103196A (zh) | 2024-05-28 |
| FR3128397A1 (fr) | 2023-04-28 |
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