WO2024256462A1 - Tête d'impression pour un système d'impression en trois dimensions de matière - Google Patents
Tête d'impression pour un système d'impression en trois dimensions de matière Download PDFInfo
- Publication number
- WO2024256462A1 WO2024256462A1 PCT/EP2024/066231 EP2024066231W WO2024256462A1 WO 2024256462 A1 WO2024256462 A1 WO 2024256462A1 EP 2024066231 W EP2024066231 W EP 2024066231W WO 2024256462 A1 WO2024256462 A1 WO 2024256462A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- print head
- rotor
- stator
- head according
- membrane
- 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
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/26—Extrusion dies
- B28B3/2681—Adjustable dies, e.g. for altering the shape of the product
-
- 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
-
- 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
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
- E04G21/0418—Devices for both conveying and distributing with distribution hose
- E04G21/0445—Devices for both conveying and distributing with distribution hose with booms
- E04G21/0463—Devices for both conveying and distributing with distribution hose with booms with boom control mechanisms, e.g. to automate concrete distribution
Definitions
- the present invention relates to the field of 3D printing and in particular the 3D printing of material for construction.
- This 3D printing consists of having a tank of material. A pump is used to bring said material from the tank to a print head.
- This print head includes an opening-closing means used to allow or block printing. This opening-closing means is used when making an object / building. Indeed, it is sometimes necessary to interrupt printing during construction in order to form openings or for the production of complex parts with discontinuities.
- the present invention seeks to solve the problems of the prior art by providing a printing system that allows a constant flow of output to be maintained when pausing said printing.
- the invention relates to a print head for a three-dimensional material printing system, said head comprising a main body provided with an opening and an outlet through which the material to be printed passes, said head further comprising means for closing the outlet opening, characterized in that the closing means comprise a rotor associated with a motor element, a stator and a tubular membrane fixed by one end to the rotor and by the other end to the stator.
- the rotor and stator are circular and concentric.
- the main body is a conduit acting as a stator.
- the main body is a conduit, the rotor being arranged to surround said main body.
- the membrane has a cylindrical or conical shape or comprises two cylindrical portions of different diameters connected by a conical portion.
- the rotor or stator are mounted to be mobile in translation, the mobility in translation being controlled by damping means.
- the shock absorbing means comprise at least one spring, preferably several springs, even more preferably, a series of regularly distributed springs.
- the membrane is fixed to the rotor and/or stator by a clamping ring.
- the clamping ring has a rounded profile.
- the clamping ring comprises means for holding the ring comprising at least one hole and one stud arranged, respectively, on the clamping ring and on the inner conduit or vice versa.
- the invention further relates to a three-dimensional printing device comprising a material reservoir connected to a print head via a pipe, said print head being carried by a structure allowing said print head to move along at least three axes: length, width and height, said printing device being controlled by a calculation unit, characterized in that said print head is the print head according to the invention.
- FIG. 11 and 12 represent a variant of a clamping ring of a print head according to the invention.
- a three-dimensional material printing system 1 is shown.
- the printing system 1 is used to produce a construction object such as a brick or a concrete block or to directly produce a building.
- the printing system comprises a print head 10 by which the material is deposited.
- the print head 10 is mounted on a structure 2 allowing said print head 10 to move along at least three axes length, width and height to carry out said printing.
- This structure 2 can be in the form of an articulated arm or gantries.
- the print head 10 and the structure 2 are connected to a control unit.
- Print head 10 visible at , is connected to a tank 20 via a conduit called the main conduit 40.
- the tank 20 is a tank in which the mixture used for printing is stored.
- the tank 20 is also called a mixer when it is equipped with means for mixing the mixture such as an endless screw or rotating blades.
- the printing system 1 further comprises a pump 50 for supplying the mixture from the tank to the print head. The whole is controlled by a control unit 60.
- Print head 10 visible at , comprises a main body 12 provided with an inlet 13 through which the main conduit is connected and an outlet 14 through which the material is ejected to be printed.
- the print head further comprises sealing means 30 arranged at the outlet allowing the material to be printed or not.
- the sealing means 30 comprise a rotor 32 and a stator 34 as visible in the .
- the sealing means 30 further comprise a membrane 36.
- This membrane 36 is fixed both to the stator 34 and to the rotor 32.
- the rotor 32 and the stator are arranged to be one inside the other, that is to say concentric, and thus form an inner element and an outer element.
- the rotor and the stator are of circular shapes. It is possible for the rotor 32 and/or the stator 34 to be of at least hexagonal shape, for example octagonal or dodecagonal.
- the rotation of the rotor relative to the stator allows the membrane 36 to be moved and rotated. This rotation of the membrane 36 causes it to overlap on itself, leading to the appearance of folds 360 allowing the membrane to simulate an iris as visible at the .
- the membrane 36 used is a tubular type membrane.
- This membrane 36 has a cylindrical or conical shape or other such as for example a shape comprising two portions of different diameters connected together by a conical portion as visible in the .
- This membrane 36 is fixed to the rotor and to the stator in a clever manner.
- the membrane 36 comprises an outer face and an inner face.
- the stator 34 and the rotor 32 which are tubular, also comprise an inner face and an outer face.
- the membrane 36 is then fixed to the rotor 32 and to the stator 34 so that the outer face of the membrane 36 is in contact with the inner face of the rotor/stator element arranged as the inner element.
- the membrane 36 is then fixed to the rotor 32 and to the stator 34 so that the outer face of the membrane 36 is in contact with the outer face of the rotor/stator element arranged as the outer element.
- the membrane 36 is turned over.
- the membrane 36 is first fixed to the inner element acting as the rotor 32 or the stator 34 and is then turned over, folded back on itself for its fixing to the outer element.
- the fixing of the membrane 36 is done by different fixing means as visible in the .
- a fastening means is a clamping ring.
- This clamping ring may be screwed directly to the rotor or stator or may comprise two portions which screw together. Another example is to screw the membrane to the rotor and the stator.
- the fixing of the membrane 36 is made so that it is taut once in place.
- the main body 12 is in the form of a conduit, i.e. a tubular part.
- This main body 12 is the stator 34.
- the print head then comprises a rotor 32.
- This rotor 32 is in the form of a tubular part which surrounds the stator 34.
- the rotor 32 is mounted in rotation by means of a motor.
- This motor 38 is controlled by the control unit. In this first embodiment, the material is thus expelled by said stator 34.
- the main body 12 is in the form of a conduit, i.e. a tubular part.
- the rotor 32 is a conduit which surrounds the main body, the two conduits being circular allowing the rotor to be rotated.
- the stator 34 is a fixed conduit, fixed to the main body 12 for example. In this second embodiment, the material is thus expelled through the main conduit 12.
- the main body 12 is not necessarily in the form of a conduit. This conduit shape may be limited to the part at which the outlet opening is made.
- the main body 12 may thus be in the form of a square or rectangle or triangle from which a circular conduit forming the outlet extends.
- the motor 38 used for rotating the rotor 32 is preferably a stepper motor. Such a motor allows fine, step-by-step rotation, thereby opening or closing the membrane precisely.
- the advantage of the system according to the invention is to allow a start-stop phase without loss of pressure.
- one of the ducts is mounted on a shock absorber as seen in the .
- a traction is exerted on said external conduit.
- the rotor 32 or the stator 34 are mounted on a shock absorber.
- the conduit mounted on the shock absorber is the external conduit.
- the assembly then consists of having an external conduit fixed to a fixed point by a series of damping elements such as springs.
- damping elements such as springs.
- the presence of the springs makes it possible to compensate for this tension since instead of having the tension which is localized on the membrane 36, this tension is compensated by the springs which allow the conduit mounted on springs to move.
- the springs make it possible, during the rotation in the opposite direction of the rotor, to have the membrane which relaxes and therefore a return to the initial positioning of the conduit mounted on spring.
- the fixing of the membrane 36 to the inner duct is a clamping ring 39.
- This clamping ring 39 has a rounded shape as visible in the . This rounded shape helps protect the membrane. In fact, when stretched, the membrane 36 rests and rubs against the edge of the inner duct. With the rotation of the membrane 36, this rest can damage said membrane.
- the rounded clamping ring helps limit friction on the membrane.
- the clamping ring 39 is, optionally, associated with means for holding the ring. Indeed, when the membrane 36 of the closure means 30 is closed, a residual pressure in the print head 10 or in the main conduit 40 may be present. This residual pressure tends to exert a stress on the clamping ring 39 which can lead to an axial translation of said clamping ring 39. This then results in a decoupling of the clamping ring with the membrane 36. To avoid this, the means for holding the ring comprise are arranged to limit this axial translation. In a first example, the means for holding the ring comprise at least one hole 39b, through or not, and a stud 39a arranged on the clamping ring 39 and on the inner conduit (which may be the stator 34) as visible in the figure. .
- the stud and the hole are arranged so that said stud is inserted into the hole, even with the membrane interposed between said stud and the hole.
- This stud-hole assembly makes it possible to create a stop which limits the translation of the clamping ring. It is understood that the stud is arranged on the clamping ring and the hole on the inner duct or vice versa.
- the inner duct may comprise at least one bead which limits the translation of the clamping ring.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Optics & Photonics (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Ink Jet (AREA)
- Coating Apparatus (AREA)
Abstract
Description
Claims (11)
- Tête d’impression (10) pour un système d’impression (1) en trois dimensions de matière, ladite tête comprenant un corps principal (12) muni d’une ouverture d’entrée (13) et d’une ouverture de sortie (14) par lesquelles la matière à imprimée transite, ladite tête comprenant en outre des moyens d’obturation (30) de l’ouverture de sortie, caractérisé en ce que les moyens d’obturation comprennent un rotor (32) associé à un élément moteur (38), un stator (34) et une membrane (36) tubulaire fixée par une extrémité au rotor et par l’autre extrémité au stator.
- Tête d’impression selon la revendication précédente, dans laquelle le rotor (32) et le stator (34) sont circulaires et concentriques.
- Tête d’impression selon l’une des revendications 1 ou 2, dans laquelle le corps principal est un conduit faisant office de stator.
- Tête d’impression selon l’une des revendications 1 ou 2, dans laquelle le corps principal est un conduit, le rotor étant agencé pour entourant ledit corps principal.
- Tête d’impression selon l’une des revendications précédentes, dans laquelle la membrane (36) présente une forme cylindrique ou conique ou comprenant deux portions cylindriques de diamètre différent reliées par une portion conique.
- Tête d’impression selon l’une des revendications précédentes, dans laquelle le rotor ou le stator sont montés mobiles en translation, la mobilité en translation étant contrôlée par des moyens amortisseurs.
- Tête d’impression selon la revendication précédente, dans laquelle les moyens amortisseurs comprennent au moins un ressort, de préférence plusieurs ressorts, encore plus préférentiellement, une série de ressorts régulièrement répartie.
- Tête d’impression selon l’une des revendications précédentes, dans laquelle la membrane est fixée au rotor et/ou au stator par une bague de serrage (39).
- Tête d’impression selon la revendication précédente, dans laquelle la bague de serrage présente un profil arrondi.
- Tête d’impression selon la revendication précédente, dans laquelle la bague de serrage comprend des moyens de maintien de la bague comprenant au moins un trou (39b) et un plot (39a) agencés, respectivement, sur la bague de serrage (39) et sur le conduit intérieur ou inversement.
- Dispositif d’impression en trois dimensions (1) comprenant un réservoir de matière connecté à une tête d’impression par l’intermédiaire d’un tuyau, ladite tête d’impression étant porté par une structure permettant à ladite tête d’impression de se déplacer selon au moins trois axes longueur, largeur et hauteur, ledit dispositif d’impression étant commandé par une unité de calcul caractérisé en ce que ladite tête d’impression est la tête d’impression selon l’une des revendications précédentes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2305980 | 2023-06-13 | ||
| FR2305980A FR3149822B1 (fr) | 2023-06-13 | 2023-06-13 | Tête d’impression 3D avec obturateur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024256462A1 true WO2024256462A1 (fr) | 2024-12-19 |
Family
ID=88505279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/066231 Pending WO2024256462A1 (fr) | 2023-06-13 | 2024-06-12 | Tête d'impression pour un système d'impression en trois dimensions de matière |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR3149822B1 (fr) |
| WO (1) | WO2024256462A1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140252668A1 (en) * | 2011-11-01 | 2014-09-11 | Loughborough University | Method and apparatus for delivery of cementitious material |
| US20150367588A1 (en) * | 2013-02-08 | 2015-12-24 | Eth Zurich | Apparatus and method for vertical slip forming of concrete structures |
| CN111015893A (zh) * | 2019-12-28 | 2020-04-17 | 佛山市鼎科科技发展有限公司 | 一种3d陶泥打印机 |
| AU2021298045A1 (en) * | 2020-06-23 | 2023-01-19 | Mai International Gmbh | Nozzle for dispensing concrete, mortar or the like |
-
2023
- 2023-06-13 FR FR2305980A patent/FR3149822B1/fr active Active
-
2024
- 2024-06-12 WO PCT/EP2024/066231 patent/WO2024256462A1/fr active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140252668A1 (en) * | 2011-11-01 | 2014-09-11 | Loughborough University | Method and apparatus for delivery of cementitious material |
| US20150367588A1 (en) * | 2013-02-08 | 2015-12-24 | Eth Zurich | Apparatus and method for vertical slip forming of concrete structures |
| CN111015893A (zh) * | 2019-12-28 | 2020-04-17 | 佛山市鼎科科技发展有限公司 | 一种3d陶泥打印机 |
| AU2021298045A1 (en) * | 2020-06-23 | 2023-01-19 | Mai International Gmbh | Nozzle for dispensing concrete, mortar or the like |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3149822B1 (fr) | 2025-06-06 |
| FR3149822A1 (fr) | 2024-12-20 |
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