WO2017005803A1 - Impression en 3d à l'aide d'un matériau d'impression pâteux non homogène - Google Patents

Impression en 3d à l'aide d'un matériau d'impression pâteux non homogène Download PDF

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Publication number
WO2017005803A1
WO2017005803A1 PCT/EP2016/066005 EP2016066005W WO2017005803A1 WO 2017005803 A1 WO2017005803 A1 WO 2017005803A1 EP 2016066005 W EP2016066005 W EP 2016066005W WO 2017005803 A1 WO2017005803 A1 WO 2017005803A1
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WO
WIPO (PCT)
Prior art keywords
component
nozzle
strand
mixing
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.)
Ceased
Application number
PCT/EP2016/066005
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German (de)
English (en)
Inventor
Jörg Siekmann
Klaus KRENGEL-ROTHENSEE
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.)
Ftc 3d GmbH
Original Assignee
Ftc 3d GmbH
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 Ftc 3d GmbH filed Critical Ftc 3d GmbH
Publication of WO2017005803A1 publication Critical patent/WO2017005803A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • 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
    • B33Y10/00—Processes of additive manufacturing

Definitions

  • the invention relates to a method for carrying out a 3D
  • Solidification in the context of the present proposal is a hardening of the material strand that has escaped from the nozzle.
  • z. B in thermoplastic material.
  • the setting z.
  • crosslinking can cause the solidification.
  • the problem arises that the material solidifies sufficiently quickly. If, in order to create a three-dimensional body, the strand of material emerging from the nozzle of the printer does not solidify sufficiently quickly, it dissipates.
  • the invention has for its object to improve a generic method to the effect that a paste SD printing multi-layer objects with fast construction progress and high component final strength is possible. Furthermore, the invention is based on the object, one for carrying out this Specify method suitable device, which has a high availability.
  • the invention proposes that the mixing of the two components, of which one component can simplifyly be referred to as a "binder” and the other component as a “hardener”, takes place only in the region of the nozzle, ie, shortly before the exit of the material strand from the nozzle.
  • a comparatively short, so-called pot-time can be used, that is to say a comparatively short period of time until the completion of the solidification process, for example by selecting the suitable composition of the two components.
  • This rapid solidification ensures that a component with several superimposed layers can be created without the lower, in particular the lowest layer can deform undesirable.
  • the mixture is due to a change in the geometry in the nozzle: the first component of the material to be processed first passes through a mixing opening.
  • the second component is supplied, ie either shortly before, or exactly in the mixing opening, or shortly after this mixing opening, the addition of the second component advantageously taking place in the mixing opening.
  • the outlet opening of the nozzle Downstream of the mixing opening, ie in the flow direction behind the mixing opening, the outlet opening of the nozzle is arranged, from which the entire material strand containing the first and the second component emerges from the nozzle.
  • the outlet opening has a smaller free, the material passage cross-section than the upstream mixing opening of the nozzle, so that the material is literally squeezed at the transition from the mixing opening to the outlet opening.
  • the so-called squeezing ratio is determined by the ratio of the larger free cross section Q1 of the mixing opening to the free cross section Q2 of the outlet opening.
  • the solidification of the cladding layer can take place, for example, by light rays from the environment, or by atmospheric moisture, so that even before the
  • the cladding layer has sufficient strength to allow the deposition of another strand of material on the previously deposited layer of the material strand.
  • the mixing opening may have radially inwardly directed notches in the course of its circumference, that is, for example, a cross section which is contoured similar to a flower having a plurality of petals, or which is contoured similarly to a multi-beam star, or the like.
  • the second pumpable component is introduced into these indentations.
  • the subsequent squeezing of the material mixture up to its exit from the outlet nozzle causes the second component introduced into the indentations to be literally enclosed by the first component and thus penetrates deep into the interior of the entire material strand.
  • a dendritic branching of the second component enclosed in the interior of the first component can take place.
  • the material mixture of the two components is not homogeneous, but is designed inhomogeneous due to embedded particles.
  • the second component is introduced in each of the several existing notches to the first component in order to effect the most uniform possible mixing of the entire material strand.
  • production of the printing device or its nozzle may be sufficient to provide only a single indentation or, in the case of multiple indentations, the second component only in the region of a single indentation on the surface first component, or at least not all the notches of the first component, if it turns out that for the material mixture used in each case sufficiently thorough mixing of the two components and thus a sufficiently rapid and complete solidification of the deposited from the nozzle strand of material can be ensured.
  • the strand of material dispensed from the nozzle is not solidified by a single solidification mechanism, but rather is solidified in a "duale” process.
  • This "dualeye” process based on two different solidification mechanisms means that, on the one hand, a first solidification mechanism Through solidification of the discharged material from the nozzle strand causes, by means of two mutually reactive components. This first solidification mechanism may require a relatively longer period of time.
  • the strength of the material strand can be improved insofar as by means of a second solidification mechanism, an outer shell layer is solidified, so that a solid shell of the material strand is formed, the material strand a imparts increased load-bearing capacity and, prior to its solidification, makes it possible to deposit one or more further layers of material strands on this layer of the material strand. Similar to the wall of a pipeline, this outer, already solidified coating layer of the material strand ensures that mechanical stresses do not lead to deformation of the material strand before it is completely solidified and reaches its final mechanical load capacity.
  • the material strand which already contains both components, can be exposed from the outside to an influence which promotes solidification the envelope layer of the Material strand out.
  • this influence can be heat, so that a heating device can be provided downstream of the outlet opening, through which the material strand emerging from the outlet nozzle flows.
  • the outlet nozzle itself may also be heated in order to exert, in addition to the mixing-through effect, the influence which can be used on the material strand for the solidification of the coating layer.
  • moisture may be released onto the surface of the strand of material, such as water or other reactive moisture, and as a third influence, an annular radiation source may be provided externally on the strand of material acts and thus promotes the solidification of an outer shell layer of the material strand.
  • the material mixture in the nozzle is tempered before the outlet opening by means of a heating device and is heated to a predetermined temperature.
  • a temperature control of the material mixture is provided within the nozzle in order to influence the flowability of the material mixture advantageous. It can therefore be provided that within the nozzle, the material mixture is brought to a first, relatively low temperature in order to promote the flowability of the material mixture within the nozzle.
  • the heating of the material mixture can be provided with a second, higher temperature, in contrast, in order to assist in the solidification of the aforementioned coating layer of the material strand.
  • the first referred to as a binder component contain elastomer particles.
  • the elastomer particles are configured as granules, that is, as irregularly shaped bodies, which are compared to uniform geometric bodies, such as.
  • As beads have the advantage to effect each other an improved mechanical support, so that components with relatively high mechanical strength can be created, which are very stable especially against pressure loads. For example, surfaces can be created that are walkable and can withstand traffic or sports loads.
  • the elastomer granulate is present with different sized grains as a granule mixture.
  • a mechanically comminuted recycled material can be used as granules, while otherwise the first component as binder can contain, for example, a polyurethane. Due to a reduced void volume of the elastomer granulate, accordingly, less polyurethane is required to achieve a certain volume of the first component, which is accordingly economically advantageous.
  • the first component can contain as elastomeric granules an EPDM granules.
  • EPDM has excellent bonding properties, so that the layers superimposed on 3D printing can be reliably joined together and very stable, yet elastic components can be created, namely printed.
  • An application example of the proposed method is to process a strand of material containing EPDM granules to flat sheets, which then as a floor covering For example, for sports floors, raceways u. Like. Can be used. Due to the excellent adhesiveness color different areas can be permanently interconnected, so that, for example, dividing lines between different tracks, logos, or any alphanumeric markings can be easily introduced into the soil by first the desired labels are printed according to the proposed method and then be surrounded with the rest, pourable material of a different color, this free-flowing differently colored material is then crosslinked or solidified in a conventional manner.
  • a granulate mixture between 0 and 1, 5 mm grain size can be processed, for example, with a printing device in which the outlet opening of the nozzle has a circular geometry and has a diameter of 3 mm. Depending on this nozzle diameter, strands of material can be deposited from the nozzle, which enable a comparatively high resolution of optical patterns in the area of the floor design.
  • the first component is conveyed by means of an extruder before it enters the mixing opening. Due to the fact that this first component, which is indeed inhomogeneous and contains the granules, is conveyed by means of an extruder, it is subjected to mechanical action, so that on the one hand it undergoes a kind of pre-compaction by arranging the individual granules of the granulate mixture as close as possible mentioned above, the smallest possible void volume of the granule mixture cause. Secondly, the grains of the granular mixture are brought into a kind of preferred orientation, so that the subsequent passage of the material mixture through the nozzle and its mixing and outlet openings is favored. With regard to the material flow of the first component is also noted that when using elastomeric granules, the fine grain fractions act as a flow improver, which make pumping the first component either possible or at least possible with a lower energy input.
  • the proposed method can advantageously be carried out with materials in which a urethane acrylate or urethane methacrylate is combined with isocyanate reagents in the material mixture.
  • these materials enable reliable solidification in favor of a high stability and, on the other hand, a fast initial strength can be achieved.
  • Tels a solidified shell layer so that with the proposed method and using these materials within a relatively short time, a comparatively large volume of material can be constructed, with the large volume of material is not meant the volume, which occupies the body produced with its envelope contour, but rather, the volume of material dispensed from the printer. This ability to build up a large volume in a short time means fast work progress and consequently low production times for the objects to be printed.
  • At least one additional material which originates from the group of the following materials may advantageously be used in the material mixture:
  • a reactive diluent may be used, for example consisting of mono-, di-, tri- or polyfunctional acrylates which corresponds to urethane or urethane meth acrylate can be added to affect its viscosity.
  • a viscosity of less than 10,000 mPas is set, so that the corresponding, pasty material mixture is easily pumped.
  • the material mixture may have a photoinitiator to enable solidification by means of light radiation, for example to obtain the outer cladding layer, by correspondingly irradiating the material strand with light or exposing it to ambient light.
  • an inhibitor can be used to influence the pot life of the solidification reaction of the two components and to prevent premature solidification of the material strand.
  • Rheological auxiliaries can be added to the material mixture in order to influence the flow properties of the two components or of the entire material mixture, be it within the printing device, for example within the nozzle, in order to optimally adjust the material there, or if it is as fluid as possible around the material remplistel- len, when it has escaped from the nozzle and then, after filing on possibly a previous position, should not flow.
  • a device for carrying out the proposed method can advantageously be used a device whose nozzle has a nozzle channel through which flows the Mate almischung.
  • the nozzle channel leads the material mixture first to the aforementioned mixing opening and then to the outlet opening of the nozzle.
  • this nozzle has at least one feed channel, so that here a second component can be supplied to the first component, which passes through the mixing opening.
  • the mixing opening has a free cross section, designated Q1, which designates the area in the mixing opening through which material can flow through the mixing opening.
  • the outlet opening downstream of the mixing opening has a free cross-section, designated Q2, which is less than the free cross-section Q1 of the mixing opening, in order in this way to produce the abovementioned squeezing effect and thus the mixing of the two components.
  • the mixing opening may advantageously have the above-mentioned notches in the course of its circumference, so that the material flow of the first component passing through this mixing opening also has such a notch in cross-section.
  • this notch of the mixing opening of the supply channel opens, in this way to allow the introduction of the second component as deep as possible in the cross section of the first component and thus to support a very intensive mixing of the two components.
  • the nozzle may advantageously have a heater, so that the nozzle channel through which the material mixture flows can be tempered at a predetermined temperature.
  • a heater so that the nozzle channel through which the material mixture flows can be tempered at a predetermined temperature.
  • too mineral constituents are present in the first or second component, or metallic or natural chips, for example wood chips, can be processed as constituents of the first component if the printed components are to have the corresponding optical or also mechanical properties.
  • the device in one embodiment of the device can be advantageously provided that in the flow direction behind the outlet opening of the nozzle an annular radiation source is arranged, which surrounds the emerging from the nozzle strand of material, and the jets are directed radially inward, namely on the strand of material. In this way, a radiation-assisted solidification of the outer shell layer of the material strand can be effected.
  • a heater can be arranged downstream of the outlet opening in the flow direction, so that the creation of the outer one by means of a corresponding heat effect
  • Covering layer can be supported, depending on which materials are present in the material strand and which influences accordingly favor the solidification of an outer shell layer.
  • a friction-reducing surface coating can be provided inside the nozzle, for example made of PTFE, in this way especially where the first component flows, or where the second component flows, or where both components or the material mixture prepared from two components, the nozzle flows through, reduce the wall friction resistance and to support a low-resistance, easy flow through the nozzle.
  • FIG. 1 is a perspective view of an apparatus for performing a 3D paste printing method
  • FIG. 2 shows two cross sections through a nozzle which can be used in the device of FIG. 1,
  • FIG. 3 shows a cross section through a nozzle with a to FIG.
  • FIG. 4 shows a view similar to FIG. 2, but for a further alternative embodiment of a nozzle
  • Fig. 5 is a schematic, greatly simplified, perspective view of a nozzle.
  • 1 denotes a device as a whole, which serves to deposit pasty, inhomogeneous material in the 3D printing process in layers.
  • a liquid A for example a polyurethane
  • a solid B for example an EPDM granulate
  • a liquid A for example a polyurethane
  • a solid B for example an EPDM granulate
  • the first component 23 is conveyed by means of a feed pump 3 through a transport line 4, wherein in Fig. 1 right schematically a section of the first component 23 is shown, which is located in the transport line 4.
  • Granulate 22 with different sized EPDM grains is surrounded by the liquid A.
  • the transport line 4 can be heated in order to ensure optimum flow properties of the first component 23.
  • a pipe heater 5 is schematically indicated, which surrounds the transport line 4 on a small portion of the transport line 4.
  • the first component 23 passes into a buffer container 6, which serves to equalize the material flow and has a filling sensor 7 indicated schematically.
  • the fill sensor 7 can monitor the fill level within the buffer tank 6 in a first embodiment; In this case, the supply pump 3 is turned on when it falls below a minimum level or increases their speed, and when exceeding a maximum level in the buffer tank 6, the feed pump 3 is turned off or reduced their speed.
  • the filling sensor 7 may be configured in a second embodiment as a pressure sensor which detects the pressure within the buffer tank 6; In this case, the supply pump 3 is switched on or falls below a minimum pressure, the speed increases, and when exceeding a maximum allowable pressure in the buffer tank 6, the feed pump 3 is turned off or reduced their speed.
  • the design of the filling sensor 7 as a pressure sensor has the advantage that the buffer container 6 is always completely filled and is thus avoided that air bubbles enter the material.
  • the buffer container 6 is followed by a metering screw 8 which is rotated by a drive motor 9 and extends from the buffer container 6 into a nozzle channel 10 of a nozzle 11.
  • the metering screw 8 runs conically, so that it intensively processes and compresses the material transported by it, thereby aligning the solids content of the first component 23 in the manner of a preferred orientation, which improves the flow properties of the first component 23.
  • the metering screw 8 extends until just before a mixing opening 12 which is disposed within the nozzle 1 1.
  • a mixing opening 12 is shown in each case, and downstream of the mixing opening 12, an outlet opening 14 of the nozzle 11 which can be seen from FIGS. 2 and 4 is arranged in the flow direction.
  • a second liquid H can be introduced into the nozzle 1 1 in the region of the mixing opening 12.
  • first fluid A may be referred to simply as a "binder”
  • second fluid H may also be referred to as a "hardener” to simplify matters, so as to express that the two fluids A and H react with one another and solidify cause the material mixture, which contains the first liquid A, the solid B, the second liquid H and optionally additives such as a reactive diluent, a photoinitiator, an inhibitor or theological aid.
  • the second liquid H therefore constitutes a second component 24, so that the material mixture to be printed out consists of these two components 23 and 24.
  • the additives may be contained exclusively in the first component 23 or exclusively in the second component 24, or may be distributed to both components 23 and 24.
  • a pneumatic switch 17 serves to switch the addition of the second component 24 in the nozzle 1 1 on or off, so that, for example, only hardener or the second component 24 flows into the nozzle 1 1 when it moves and deposits a strand of material, that is, when the first component 23 flows through the nozzle 1 1.
  • the nozzle 1 1 is moved in the direction of the arrow R, so that a strand of material 18, which contains the entire material mixture of the two components 23 and 24, emerges from an outlet opening 14 of the nozzle 1 1, comes down and there a substrate 19 is deposited. An already deposited part of this strand of material 18 can be seen lying left of the nozzle 1 1 on the substrate 19.
  • a device 20 is further indicated in the region of the outlet opening 14, which surrounds the material strand 18 in an annular manner and is annular on the material strand 18 from the outside. acts.
  • the device 20 serves to bring an outer shell layer of the material strand 18 to solidification before the reaction of the two components 23 and 24 can effeterstarren the material strand 18 over its entire cross-section.
  • the device 20 is indicated purely schematically in FIG. 1: it can be an integral part of the nozzle 11 and surround the outlet opening 14.
  • the outlet opening 14 may be heated when the heat causes the solidification of a cladding layer of the material strand 18.
  • the device 20 may also be connected downstream of the nozzle 1 1, viewed in the flow direction of the material strand 18, and for example retrofitted to the nozzle 1 1 or be arranged independently of the nozzle 1 1 just behind the outlet opening 14.
  • the course of the material strand 18 is shown purely schematically, it has been found in practical experiments to be advantageous that the material strand 18 is discharged from the outlet opening 14 or from the device 20 at a height above the substrate which is approximately half the diameter of the outlet opening 14 equivalent.
  • the device 20 depending on the materials that form the material strand 18, and depending on the curing mechanisms, be configured as a radiation device, which irradiates, for example, UV rays annular from the outside onto the strand of material 18 or the device 20 can serve to apply a liquid from the outside onto the strand of material 18, for example water or another hardening liquid, by sprinkling or by means of small spray nozzles.
  • a radiation device which irradiates, for example, UV rays annular from the outside onto the strand of material 18 or the device 20 can serve to apply a liquid from the outside onto the strand of material 18, for example water or another hardening liquid, by sprinkling or by means of small spray nozzles.
  • FIG. 2 shows two cross sections through the nozzle 1 1 in order to clarify the size ratios of the two different openings.
  • a mixing opening 12 is shown on the left.
  • An arrow schematically illustrates the material flow of the two Components 23 and 24 to a Austhttsö réelle 14, which is shown in Fig. 2 right.
  • the mixing port 12 is located with a diameter Q1. Due to the corresponding inner contour of the mixing opening 12, this has a plurality of notches 21. A strand of pasty material of the first component 23, which flows through this inner contour of the mixing opening 12, accordingly has an outer contour with such indentations.
  • another section of the mixing opening 12 extends with a circular outer contour.
  • the feed channel 15 is circular outside, filled with the second component 24, and bounded inwardly by the provided with the many notches material strand of the first component 23, which emerges from the petal-like contour of the mixing port 12.
  • this material mixture consisting of the interior, petal-like strand of the first component 23 and the supplied through the feed channel 15 second component 24 passes into the outlet opening 14.
  • This has a circular cross section with the diameter Q2,
  • the size ratio Q1 / Q2 results in a squeezing ratio whose value is greater than 1 and which apart from the geometric shaping and contouring of the mixing opening 12 is a measure of the intensity of the mixing of the two components 23 and 24 represents the material mixture.
  • 3 shows a second embodiment of a mixing opening 12. Again, the petal-like geometry of the mixing opening 12 for the first component 23 is provided as in FIG. 2.
  • each notch 21 is associated with its own feed channel 15, which leads the second component 24 into the respective notch 21 of the mixing opening 12, and thus into the respective notch of the paste strand of the first component 23rd
  • Fig. 4 shows cross-sections through a further embodiment of a nozzle 1 1. Similar to FIG. 2, the material flow from the mixing opening 12 to the outlet opening 14 is also indicated here by an arrow.
  • the embodiment of FIG. 4 is provided for processing a granule mixture with larger grain diameters than in the embodiment of FIG. 2, therefore the values Q1 for the mixing opening 12 and Q2 for the outlet opening 14 are each larger than in the embodiment of FIG As shown in FIG. 4 results in a squeezing ratio whose value is greater than 1, since the diameter Q2 of the outlet opening 14 is smaller than the diameter Q1 of the mixing opening 12.
  • the mixing opening 12 in turn notches 21, but they have a has a rectilinear and non-rounded inner contour and therefore not similar to a petal, but is contoured much like a star.
  • transverse bores can extend radially through the wall of the nozzle 1 1 at the outside of the nozzle 1 1 at the level of the mixing opening. These transverse bores may form the feed channels 15 or at least a portion of the respective feed channel 15.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)

Abstract

L'invention concerne un procédé de mise en œuvre d'une impression en 3D, un mélange de matériau pouvant être pompé étant utilisé, lequel contient un matériau pâteux non homogène, et le mélange de matériau étant distribué sous forme de boudin de matériau (18) sortant d'une buse (11) puis étant solidifé. Un premier composant (23) non homogène pouvant être pompé est acheminé sous forme de boudin de matériau (18) jusqu'à une ouverture de mélange (12) et est guidé à travers l'ouverture de mélange (12). Dans la région de l'ouverture de mélange (12), un deuxième composant (24) pouvant être pompé est rapproché, depuis l'extérieur, du boudin de matériau (18) contenant le premier composant (23) puis les deux composants (23, 24) sont guidés à travers une ouverture de sortie (14) de la buse (11). La section transversale libre (Q2), permettant un passage de matériau, de l'ouverture de sortie (14) est plus petite que la section transversale libre (Q1) de l'ouverture de mélange (12), de telle sorte que le mélange de matériau soit écrasé suivant un rapport dit d'écrasement Q1/Q2 > 1. La présente invention concerne en outre un dispositif permettant la mise en œuvre de ce procédé.
PCT/EP2016/066005 2015-07-06 2016-07-06 Impression en 3d à l'aide d'un matériau d'impression pâteux non homogène Ceased WO2017005803A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019110718A1 (de) * 2019-04-25 2020-10-29 Freudenberg Se Additives Fertigungsverfahren zur Herstellung eines Formkörpers aus Elastomer
US20210187844A1 (en) * 2019-12-20 2021-06-24 Raccords Et Plastiques Nicoll Display screen with a graphical user interface
EP3664981B1 (fr) 2017-08-09 2023-04-05 Sika Technology AG Système d'application d'un matériau de construction
EP4316760A3 (fr) * 2019-03-15 2024-03-20 Sika Technology AG Système d'application d'un matériel de construction

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5134569A (en) 1989-06-26 1992-07-28 Masters William E System and method for computer automated manufacturing using fluent material
DE10150256A1 (de) * 2001-10-11 2003-07-10 Envision Technologies Gmbh I I Verfahren und Vorrichtung zum Herstellen von dreidimensionalen Objekten
US20060162415A1 (en) * 2003-01-02 2006-07-27 Arno Friedrichs Method and device for producing a hard metal tool
CN103692653A (zh) * 2013-12-24 2014-04-02 北京化工大学 熔体微分三维打印机
US20150093465A1 (en) * 2013-10-01 2015-04-02 Autodesk, Inc. Material Dispensing System

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5134569A (en) 1989-06-26 1992-07-28 Masters William E System and method for computer automated manufacturing using fluent material
DE10150256A1 (de) * 2001-10-11 2003-07-10 Envision Technologies Gmbh I I Verfahren und Vorrichtung zum Herstellen von dreidimensionalen Objekten
US20060162415A1 (en) * 2003-01-02 2006-07-27 Arno Friedrichs Method and device for producing a hard metal tool
US20150093465A1 (en) * 2013-10-01 2015-04-02 Autodesk, Inc. Material Dispensing System
CN103692653A (zh) * 2013-12-24 2014-04-02 北京化工大学 熔体微分三维打印机

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3664981B1 (fr) 2017-08-09 2023-04-05 Sika Technology AG Système d'application d'un matériau de construction
EP4316760A3 (fr) * 2019-03-15 2024-03-20 Sika Technology AG Système d'application d'un matériel de construction
DE102019110718A1 (de) * 2019-04-25 2020-10-29 Freudenberg Se Additives Fertigungsverfahren zur Herstellung eines Formkörpers aus Elastomer
US12466126B2 (en) 2019-04-25 2025-11-11 Carl Freudenberg Kg Additive manufacturing method for producing a molded article from elastomer
US20210187844A1 (en) * 2019-12-20 2021-06-24 Raccords Et Plastiques Nicoll Display screen with a graphical user interface

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