EP4069516A1 - Tête de pression - Google Patents

Tête de pression

Info

Publication number
EP4069516A1
EP4069516A1 EP20817343.5A EP20817343A EP4069516A1 EP 4069516 A1 EP4069516 A1 EP 4069516A1 EP 20817343 A EP20817343 A EP 20817343A EP 4069516 A1 EP4069516 A1 EP 4069516A1
Authority
EP
European Patent Office
Prior art keywords
water
print head
binder
valve
outlet opening
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
Application number
EP20817343.5A
Other languages
German (de)
English (en)
Inventor
Kurt Wohlgemuth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Progress Maschinen and Automation AG
Metallconcept SRL
Original Assignee
Progress Maschinen and Automation AG
Metallconcept SRL
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 Progress Maschinen and Automation AG, Metallconcept SRL filed Critical Progress Maschinen and Automation AG
Publication of EP4069516A1 publication Critical patent/EP4069516A1/fr
Pending legal-status Critical Current

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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • 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
    • 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
    • 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
    • B33Y10/00—Processes of additive manufacturing
    • 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
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/05—Heads having a valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/12—Embodiments of or processes related to ink-jet heads with ink circulating through the whole print head

Definitions

  • the invention relates to a print head for the controlled delivery of a water-binder mixture, comprising water and at least one hydraulic binder, in particular a cementitious binder, and the use of at least one such print head for the controlled delivery of a water-binder mixture, comprising water and at least one hydraulic binder, especially a cementitious binder, in a 3D printing device.
  • the invention further relates to an arrangement with a water-binder mixture comprising water and at least one hydraulic binder, in particular a cementitious binder, and at least one such print head, as well as a method for the controlled delivery of a water-binder mixture comprising water and at least a hydraulic binding agent, in particular a cementitious binding agent, by means of at least one such arrangement.
  • the invention relates to a 3D printing device for the construction industry and a method for producing a 3D component for the construction industry by means of a 3D printing device.
  • the invention is located in the technical field of 3D printing of 3D components for the construction industry.
  • Concrete parts are usually manufactured with the aid of formwork elements.
  • the concrete parts that can be produced in this way are limited in their shape. It would therefore be desirable to be able to manufacture concrete parts with the help of a 3D printing process.
  • hydraulic binders such as cementitious binders
  • cementitious binders are used in the production of concrete parts, which react in the presence of water in a hydration reaction to form solid hydrates or hydrate phases. So far it has been assumed that these chemical processes prevent the implementation in 3D printing devices, since they very easily lead to blockages and thus irreparable damage.
  • the object of the present invention is to provide a print head for the controlled delivery of a water-binder mixture, comprising water and at least one hydraulic binder, in particular a cement-based binder, an arrangement with a water-binder mixture, comprising water and at least one hydraulic binder , in particular a cementitious binder, and at least one such print head, a method for the controlled delivery of a water-binder mixture, comprising water and at least one hydraulic binder, in particular a cementitious binder, by means of at least one such arrangement and the use of at least one such print head for controlled delivery of a water-binding agent mixture, comprising water and at least one hydraulic binding agent, in particular a cementitious binding agent, to be provided in a 3D printing device, the difficulties known from the prior art not, or only to a significant extent I appear in a weaker form.
  • Another object is to provide a 3D printing device for the construction industry and a method for producing a 3D component for the construction industry by means of a 3D printing device
  • the print head for the controlled delivery of a water-binder mixture, comprising water and at least one hydraulic binder, in particular a cement-based binder
  • the print head has at least one feed channel for supplying the water-binder mixture, at least one outlet opening, which can be brought into fluid connection with the at least one supply channel, and at least one valve with which the at least one outlet opening can be opened and closed in a controlled manner, whereby a predetermined dose of the water-binding agent mixture can be delivered through the at least one outlet opening.
  • the print head according to the invention can be operated in the manner of the inkjet method, with a predetermined dose of the water-binder mixture being able to be applied in a controlled manner.
  • the printhead is designed in such a way that during regular operation there should not be blockages and thus destruction of the printhead.
  • the print head can be detached at least one base body on which the at least one valve is arranged, and at least one with the at least one base body having connectable interchangeable body, the at least one outlet opening and / or the at least one feed channel being arranged on the at least one interchangeable body. This makes it possible to separate the at least one valve from the parts of the print head in which the water-binder mixture is guided. If local hardening occurs, the at least one interchangeable body can be exchanged simply and easily, and the print head can thus be put back into an operational state.
  • the at least one interchangeable body consists of at least one, preferably acid-resistant, plastic, preferably selected from a group consisting of PE, PVC, POM, PTFE and mixtures thereof, and / or comprises at least one injection-molded part , and / or at least two, preferably releasably connectable to one another, partial bodies, preferably wherein at least one seal is arranged between the at least two partial bodies.
  • PTFE which is also known under the name Teflon, is particularly suitable as a material because it prevents the adhesion of constituents of the water-binder mixture and is also acid-resistant.
  • the acid resistance is advantageous because some cement solvents also contain acids for cleaning.
  • - Is designed as an electropneumatic or electromagnetic valve, and / or
  • adjustable valve rod preferably wherein the at least one valve rod at least partially consists of at least one hard metal, and / or a free end of the at least one valve rod is spherical head, and / or a seal consisting of an elastic material is arranged on at least one free end of the at least one valve rod, with which the at least one outlet opening can be sealed, and / or
  • the at least one return spring comprises at least one return spring, preferably wherein the at least one return spring is designed such that the at least one outlet opening can be closed with a closing force between 10 and 50 N, particularly preferably with a closing force between 20 and 40 N.
  • At least one, preferably exchangeable, sealing membrane is provided, which at least one movable part of the at least one valve, preferably a valve rod, prevents penetration the water-binder mixture seals. In this way, damage to the at least one valve can be prevented very effectively.
  • the at least one outlet opening is formed in a nozzle body, preferably wherein the nozzle body is formed from at least one hard metal or ceramic, and / or at least one inclined, preferably funnel-shaped, contact surface for a free end of a valve rod of the has at least one valve and / or has a diameter between 0.5 and 2.0 mm.
  • the at least one feed channel has at least one inlet opening for the water-binder mixture, preferably wherein the at least one feed channel has at least one outlet opening opposite the at least one inlet opening, particularly preferably wherein the at least one inlet opening and / or the at least one outlet opening has a thread for connecting a fluid line. If the at least one feed channel has both at least one inlet opening for the water-binder mixture and at least one outlet opening, the at least one feed channel can be integrated into a circulation circuit for the water-binder mixture, which is then controlled via the at least one outlet opening a predetermined dose of the water-binder mixture is withdrawn.
  • the print head has at least one ventilation channel with which a pressure equalization for at least one movable part of the at least one valve, preferably a valve rod, can be generated.
  • a negative pressure that is produced by the movement of the at least one movable part of the at least one valve can be avoided efficiently.
  • Such a negative pressure would result in the risk that part of the water-binder mixture penetrates into the at least one valve.
  • at least one control and / or regulating device is provided with which the at least one valve can be controlled, and / or the print head comprises a plurality of outlet openings, the outlet openings, preferably equidistantly, on at least one line are arranged.
  • a water-binder mixture comprising water and at least one hydraulic binder, in particular a cement-based binder, and at least one print head according to the invention for the controlled delivery of the water-binder mixture, preferably where the at least one hydraulic binder is selected from a group consisting of Portland cement, calcium aluminate cement, calcium sulfoaluminate cement and mixtures thereof, and / or the water-binder mixture comprises at least one additive, preferably at least one plasticizer.
  • Protection is also sought for a method for the controlled delivery of a water-binding agent mixture, comprising water and at least one hydraulic binding agent, in particular a cementitious binding agent, by means of at least one arrangement according to the invention, the method comprising the following method steps: the water-binding agent mixture is fed via the at least one feed channel of the at least one print head to the at least one outlet opening of the at least one print head, preferably at a pressure between 0.1 and 2.0 bar, and the at least one outlet opening is controlled by means of the at least one valve of the at least one print head opened and closed and thereby dispensed a predetermined dose of the water-binding agent mixture through the at least one outlet opening.
  • a 3D printing device for the construction industry comprising at least one layer depositing device for depositing at least one particulate additive in layers on a printing platform and at least one print head according to the invention for the controlled delivery of a water-binding agent mixture, comprising water and at least one hydraulic Binding agent, in particular a cementitious binding agent, on at least one locally predetermined area of a layer of the at least one aggregate deposited by the at least one layer depositing device on the printing platform, preferably wherein the 3D printing device has at least one support that can be adjusted vertically in the position of use of the 3D printing device on which the at least one layer depositing device and / or the at least one print head are mounted so as to be adjustable in the horizontal direction.
  • Particulate aggregates - also known as aggregates - are at least all substances that are used in the production of concrete parts at the time of registration, such as sand, gravel, grit.
  • At least one print head according to the invention for the controlled delivery of a water-binder mixture, comprising water and at least one hydraulic binder, in particular a cement-based binder, in a 3D printing device for the construction industry, preferably with the 3D printing device according to claim 12 is formed.
  • protection is sought for a method for producing a 3D component for the construction industry by means of a 3D printing device according to claim 12, the method comprising the following method steps: at least one layer of the at least one particulate aggregate is applied to a printing platform by means of the at least A layer depositing device is deposited, and a predetermined dose of the water-binder mixture is delivered to at least one locally predetermined area of the at least one layer of the at least one aggregate by means of the at least one print head.
  • a predetermined dose of the water-binder mixture is delivered to at least one locally predetermined area of the printing platform, and / or after the deposit a last layer of the at least one additive, a predetermined dose of the water-binder mixture on at least one locally predetermined area of the last layer of the at least one additive is released.
  • FIG. 2 shows a schematically illustrated embodiment of a print head for the controlled delivery of a water-binder mixture in a perspective view
  • Fig. 3a the embodiment of the print head shown in Fig. 2, wherein a first partial body of an interchangeable body has been hidden
  • Fig. 3b the embodiment of the print head shown in Fig. 2, wherein a first and a second part body of an interchangeable body have been hidden,
  • Fig. 4a the embodiment of the print head shown in Fig. 2 in a perspective side view
  • Fig. 4b shows the embodiment of the print head shown in Fig. 4a), wherein a first and a second part body of an interchangeable body have been masked out
  • FIG. 5a a schematically illustrated embodiment of an arrangement with a water-binder mixture, comprising water and at least one hydraulic binder, in particular a cement-based binder, and a print head for the controlled delivery of the water-binder mixture in a cross-sectional view along a cross-sectional plane parallel to a longitudinal axis of the print head,
  • Fig. 5b the embodiment of the print head shown in Fig. 2 in a cross-sectional view along a cross-sectional plane perpendicular to a longitudinal axis of the print head, 6 shows a schematically illustrated embodiment of a valve of a
  • Print head for the controlled delivery of a water-binder mixture in a perspective view
  • FIG. 8 shows an isolated illustration of a valve rod of the one shown in FIG. 6
  • FIG. 9 shows an isolated illustration of a nozzle body of the one shown in FIG. 6
  • FIG. 10 shows a schematically illustrated embodiment of a 3-D component, produced according to a method for positioning a 3-D component for the construction industry by means of a 3-D printing device for the construction industry, in a perspective view.
  • Figure 1 shows a schematically illustrated embodiment of a 3D printing device 29 for the construction industry comprising a layer depositing device 30 for depositing at least one particulate additive 31 in layers on a printing platform 32 and a print head 1 for the controlled delivery of a water-binder mixture 2, comprising water and At least one hydraulic binding agent, in particular a cementitious binding agent, on at least one locally predetermined area 33 of a layer 34, 35 of the at least one aggregate 31 deposited by the layer depositing device 30 on the printing platform 32.
  • a layer depositing device 30 for depositing at least one particulate additive 31 in layers on a printing platform 32
  • a print head 1 for the controlled delivery of a water-binder mixture 2, comprising water and At least one hydraulic binding agent, in particular a cementitious binding agent, on at least one locally predetermined area 33 of a layer 34, 35 of the at least one aggregate 31 deposited by the layer depositing device 30 on the printing platform 32.
  • the 3-D printing device 29 has at least one carrier 38 which is adjustable in the vertical direction 37 when the 3-D printing device 29 is in the position of use and on which the layer depositing device 30 and the print head 1 are mounted to be adjustable in the horizontal direction 40, 41. More than one layer depositing device 30 and / or more than one print head 1 can also be provided. This increases the printing speed.
  • the layer depositing device 30 can have a discharge trough 43 as an intermediate store for the at least one particulate additive 31.
  • the carrier 38 which can be designed as a closed frame as in the case shown, can be adjustably mounted on columns 44 for adjustment in the vertical direction 37.
  • FIG. 2 and the following figures show a schematically illustrated embodiment of a print head 1 for the controlled delivery of a water-binder mixture, comprising water and at least one hydraulic binder, in particular a cement-based binder, the print head 1 having a feed channel 3 for supplying the water Binder mixture 2, several outlet openings 4, which can be brought into fluid connection with the feed channel 3, and several valves 5, with which the outlet openings 4 can be opened and closed in a controlled manner, whereby a predetermined dose 49 of the water-binder mixture 2 through the outlet openings 4 is deliverable, includes.
  • a water-binder mixture comprising water and at least one hydraulic binder, in particular a cement-based binder
  • the print head 1 having a feed channel 3 for supplying the water Binder mixture 2, several outlet openings 4, which can be brought into fluid connection with the feed channel 3, and several valves 5, with which the outlet openings 4 can be opened and closed in a controlled manner, whereby a predetermined dose 49 of the water-binder mixture 2 through the outlet openings 4 is
  • the outlet openings 4 are arranged equidistantly on a line 27.
  • the valves 5 are designed as electropneumatic valves and each have a compressed air connection 11 and an electrical connection 12.
  • the valve 5 can be supplied with compressed air via the compressed air connection 11, with which a cylinder 47, which is connected in a movement-coupled manner to a valve rod 14, can be actuated (see also FIG. 5b)).
  • the valves 5 each have a valve rod 14, preferably made of at least one hard metal, which can be adjusted, preferably over an adjustment path 13 between 0.5 and 1.5 mm.
  • the adjustment path 13 is shown in FIG. 7b).
  • the valve rods 14 can have a free end 15 which is designed in the shape of a spherical head.
  • the valves 5 can comprise at least one return spring 16, preferably wherein the at least one return spring 16 is designed such that the associated outlet opening 4 can be closed with a closing force between 10 and 50 N, particularly preferably with a closing force between 20 and 40 N.
  • a return spring is shown schematically in FIG. 5b).
  • the valves 5 can have a bearing 46 for the valve rod 14, wherein the bearing 46 can be designed as a sleeve, as in the case shown.
  • the bearing 46 surrounds the valve rod 14 and the valve rod 14 moves relative to the bearing 46.
  • a preferably exchangeable sealing membrane 17 is provided per valve 5, which seals the valve rod 14 against the penetration of the water-binder mixture 2.
  • the sealing membrane is arranged between the valve rod 14 and the bearing 46 in a sealing manner.
  • the print head 1 has a plurality of ventilation channels 25 with which a pressure equalization for the valve rods 14 can be generated (see also FIG. 5b)). Without the ventilation channels 25, there is a risk that a negative pressure arises on the side of the sealing membrane 17 facing the valve 5, through which a part of the water-binding agent mixture 2 is sucked in and thus penetrates into the valve 5.
  • the print head 1 has a base body 6 on which the valves 5 are arranged and an interchangeable body 7 which can be detachably connected to the base body 6, the outlet openings 4 and the Feed channel 3 are arranged.
  • fastening means 45 can be provided (compare FIG.
  • the interchangeable body 7 consists of at least one acid-resistant plastic, preferably selected from a group consisting of PE, PVC, POM, PTFE and mixtures thereof and comprises at least one injection-molded part.
  • the interchangeable body 7 has two partial bodies 8, 9 which can be detachably connected to one another, preferably with a seal 10 being arranged between the two partial bodies 8, 9 (compare FIGS. 3a) and 5b)).
  • FIG. 5a shows a schematically illustrated embodiment of an arrangement 28 with a water-binder mixture 2, comprising water and at least one hydraulic binder, in particular a cement-based binder, and a print head 1 for the controlled delivery of the water-binder mixture in a cross-sectional view along a cross-sectional plane parallel to a longitudinal axis 50 of the print head 1.
  • the longitudinal axis 50 is shown as an example in FIG.
  • the print head 1 is designed according to the preferred exemplary embodiment described above.
  • the at least one hydraulic binder is selected from a group consisting of Portland cement, calcium aluminate cement, calcium sulfoaluminate cement and mixtures thereof.
  • the water-binder mixture 2 comprises an additive in the form of a flow agent.
  • the feed channel 3 has an inlet opening 21 for the water-binding agent mixture 2, the feed channel 3 having an outlet opening 22 opposite the inlet opening 21.
  • the inlet opening 21 and the outlet opening 22 each have a thread 23 for connecting a fluid line 24.
  • the water-binder mixture 2 can be arranged in a container 51.
  • the fluid lines 24 connect the container 51 to the feed channel 3 of the print head 1.
  • a control and / or regulating device 26 is provided with which the valves 5 of the print head 1 can be controlled.
  • the control and / or regulating device 26 are each connected to the electrical connection 12 of the valves 5 via lines 52.
  • a method for the controlled delivery of a water-binding agent mixture 2, comprising water and at least one hydraulic binding agent, in particular a cementitious binding agent, can be carried out by means of the arrangement 28, the method comprising the following method steps: the water-binding agent mixture 2 is fed to the outlet openings 4 of the print head 1 via the feed channel 3 of the print head 1, preferably at a pressure between 0.1 and 2.0 bar, and the outlet openings 4 are opened and closed in a controlled manner by means of the valves 5 of the print head 1, thereby creating a predetermined dose 49 of the water-binder mixture 2 delivered through the outlet openings 4.
  • Figures 6, 7a), 7b), 8 and 9 show details of an embodiment of a valve 5 of the print head 1 for the controlled delivery of a water-binder mixture 2 and a nozzle body 18 cooperating with the valve rod 14 of the valve 5, in which the outlet opening 4 is formed.
  • the diameter 20 (compare FIG. 5a)) of the outlet opening 4 is between 0.5 and 2.0 mm.
  • the nozzle body 18 is formed from at least one hard metal or ceramic, and has an inclined contact surface 19 for a free end 15 of the valve rod 14 of the valve 5.
  • the inclined contact surface 19 can be funnel-shaped.
  • FIG. 10 shows a schematically illustrated embodiment of a 3D component 42, produced according to a method for producing a 3D component 42 for the construction industry by means of a 3D printing device 29 for the construction industry, the method comprising the following method steps: layers 34 are formed , 35, 36 of the at least one particulate aggregate 31 are deposited on a printing platform 32 by means of the layer depositing device 30 (the layers 34, 35, 36 are indicated in FIGS. 1 and 10 by dashed lines), and a predetermined Dose 49 of the water-binder mixture 2 is delivered to locally predetermined areas 33 of the layers 34, 35, 36 of the at least one aggregate 31 by means of the print head 1.
  • a predetermined dose 49 of the water-binder mixture 2 was applied to at least one locally predetermined area 33 of the printing platform 32 and after the deposition of a last one Layer 36 of the at least one additive 31, a predetermined dose 49 of the water-binder mixture 2 is delivered to at least one locally predetermined area 33 of the last layer 36 of the at least one additive 31.
  • very smooth surfaces 48 can be produced on the top and bottom of the 3D component 42.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Ceramic Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Coating Apparatus (AREA)

Abstract

L'invention concerne une tête de pression (1) pour distribuer un mélange eau-liant (2) de manière régulée, ledit mélange comprenant de l'eau et au moins un liant hydraulique, en particulier un liant à base de ciment, la tête de pression (1) comprenant au moins un canal d'alimentation (3) pour fournir le mélange eau-liant (2), au moins une ouverture de sortie (4) qui est en communication fluidique avec ledit canal d'alimentation (3), et au moins une soupape (5), au moyen de laquelle ladite ouverture de sortie (4) peut être ouverte et fermée de manière régulée, une dose prédéfinie (49) du mélange eau-liant (2) pouvant être distribuée à travers ladite ouverture de sortie (4).
EP20817343.5A 2019-12-05 2020-12-02 Tête de pression Pending EP4069516A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA51063/2019A AT522763B1 (de) 2019-12-05 2019-12-05 Druckkopf
PCT/EP2020/084321 WO2021110771A1 (fr) 2019-12-05 2020-12-02 Tête de pression

Publications (1)

Publication Number Publication Date
EP4069516A1 true EP4069516A1 (fr) 2022-10-12

Family

ID=73695063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20817343.5A Pending EP4069516A1 (fr) 2019-12-05 2020-12-02 Tête de pression

Country Status (6)

Country Link
US (1) US20220298811A1 (fr)
EP (1) EP4069516A1 (fr)
CN (1) CN114981090A (fr)
AT (1) AT522763B1 (fr)
CA (1) CA3163736A1 (fr)
WO (1) WO2021110771A1 (fr)

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ES2561727B1 (es) * 2014-08-29 2017-03-24 Kerajet S.A. Dispositivo, método y máquina de deposición de fluidos sobre una superficie
ITUA20164471A1 (it) * 2016-06-17 2017-12-17 System Spa Ugello per stampanti a getto di inchiostro
JP6776685B2 (ja) * 2016-07-21 2020-10-28 セイコーエプソン株式会社 流体吐出装置
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DE102017001795A1 (de) * 2017-02-24 2018-08-30 Burkhard Büstgens Pneumatische Freistrahleinrichtungen
WO2018200518A1 (fr) * 2017-04-24 2018-11-01 President And Fellows Of Harvard College Tête d'impression à plusieurs buses avec un profil adaptable pour l'impression 3d
AT520143B1 (de) * 2017-06-30 2022-03-15 Baumit Beteiligungen Gmbh Düse für Beton, Mörtel od. dgl. sowie deren Verwendung

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AT522763B1 (de) 2021-01-15
US20220298811A1 (en) 2022-09-22
AT522763A4 (de) 2021-01-15
CN114981090A (zh) 2022-08-30
CA3163736A1 (fr) 2021-06-10
WO2021110771A1 (fr) 2021-06-10

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