EP3774368A1 - Méthode et dispositif pour former un motif de matière - Google Patents
Méthode et dispositif pour former un motif de matièreInfo
- Publication number
- EP3774368A1 EP3774368A1 EP19712780.6A EP19712780A EP3774368A1 EP 3774368 A1 EP3774368 A1 EP 3774368A1 EP 19712780 A EP19712780 A EP 19712780A EP 3774368 A1 EP3774368 A1 EP 3774368A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ejection
- pattern
- layer
- support
- substrate portion
- 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.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 title claims abstract description 175
- 238000000034 method Methods 0.000 title claims abstract description 54
- 239000000758 substrate Substances 0.000 claims abstract description 54
- 239000012530 fluid Substances 0.000 claims description 23
- 239000002245 particle Substances 0.000 claims description 17
- 238000010146 3D printing Methods 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 3
- 238000000151 deposition Methods 0.000 abstract description 6
- 230000008021 deposition Effects 0.000 abstract description 3
- 238000007639 printing Methods 0.000 description 6
- 238000013519 translation Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/10—Formation of a green body
- B22F10/18—Formation of a green body by mixing binder with metal in filament form, e.g. fused filament fabrication [FFF]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/40—Structures for supporting workpieces or articles during manufacture and removed afterwards
- B22F10/47—Structures for supporting workpieces or articles during manufacture and removed afterwards characterised by structural features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/55—Two or more means for feeding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/004—Filling molds with powder
-
- 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
- B29C64/112—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Definitions
- the present invention relates to a method and a device for forming a material pattern.
- the invention can in particular be used in three-dimensional printing.
- US5767877 A discloses a toner jet printer for printing images by manipulating individual toner particles using two-dimensional print cell arrays constructed by microelectromechanical system (MEMS) technologies.
- the toner particles are positioned by aerodynamic forces controlled by microvalves in each printing cell, by selective or non-selective filling.
- non-selective filling only the printing cells corresponding to a desired image are electronically addressed to eject a toner particle from an addressed cell by aerodynamic forces controlled by actuation of the valve or by heating the print cell.
- One of the aims of the invention is to obtain a particularly fine resolution of the pattern obtained.
- the invention provides a method for forming a material pattern on a portion of the substrate, the method comprising the following successive steps:
- a second ejection of material from the layer of material ejecting the pattern portion onto the substrate portion and forming the pattern of material on the substrate portion.
- the resolution of the material pattern is not limited by the diameter of a pixel of material. Indeed, this resolution depends mainly on the control over the minimum distance between the ejected pixel boundaries. Since this control can make it possible to achieve a minimum distance between the ejected pixel limits that are smaller than the diameter of a pixel, the method according to the invention makes it possible to obtain a very good resolution of the pattern of material deposited on the part of the pixel. substrate. This effect is particularly illustrated in Figure 5 of this document.
- the best resolution allows in particular to produce patterns with edges having particularly small radii of curvature.
- the method according to the invention allows great flexibility because the characteristics of the first and second ejections may differ.
- the layer of material is on a support.
- the support is able to move.
- the support has a section which is a closed curve, so as to form a conveyor belt to have a continuous process.
- the layer of material is present on a first side of the support.
- the other side of the media can be called the second side of the media.
- the support has a convex surface, for example a cylinder, at least partially delimiting an interior space.
- the interior space preferably corresponds to the second side of the support.
- the pattern portion of the layer comprises all the material that will be part of the pattern on the substrate portion and includes only that.
- the portion of the ejected layer during the first ejection is part of an outline of the pattern portion and is in direct contact with the pattern portion.
- the material ejected at the first ejection bordered at least partially the pattern portion when this material was part of the layer.
- a pixel is an amount of material ejected, especially during the second ejection.
- a pixel is preferably formed of a plurality of particles forming a connected element.
- a pixel may be the amount of material ejected through an orifice of the ejection means between the beginning of a transport fluid flow pulse and the end of a transport fluid flow pulse.
- each pixel is approximately a disk or an oval if all the corresponding material was on the support at the time of ejection of that pixel, otherwise it is preferably a disk part or an oval part.
- the material pattern is preferably made of pixels of matter.
- the diameter of a pixel may for example be related to the diameter of an orifice of the ejection means.
- Each ejection may comprise a plurality of ejection steps.
- the first material ejection ejects the material into a collector, which can be fixed or movable relative to the support.
- At least one of the ejections is down.
- a layer is a material structure of which parts (elements, particles, solid blocks, pasty or liquid, agglomerates, or other) are in contact with each other.
- the layer is connected.
- the material pattern is connected.
- the pattern portion is connected.
- the layer is provided on a first surface of a support.
- This first surface is an outer surface of said support.
- the material layer comprises contiguous pixels, the first ejection and / or the second ejection comprising pixel addressing to be ejected.
- the ejections are preferably by "blocks" of material and not by individual particles.
- the pixels are formed of a plurality of particles. In one embodiment, at least a portion of the material ejected during the first ejection adjacent a convex portion of the pattern portion, in particular a convex portion of the pattern portion having a radius of curvature less than the radius. of a pixel.
- the invention is particularly useful for patterns having a portion in which a pixel can not be registered.
- the material of the layer adjacent a concave portion of the pattern portion remains in the layer during the first ejection.
- Each of the first and second edges may be a straight segment or may be curved.
- the method according to the invention is particularly useful for increasing the resolution at the angles in the material pattern.
- the first edge and the second edge form an angle other than zero, preferably less than 180 °.
- this angle is taken as an angle with a tangent to this curve.
- the material ejected during the first ejection adjacent a tip of the pattern portion For example, the material ejected during the first ejection adjacent a tip of the pattern portion. Considering that the first and second edges are very small, this also corresponds to any situation where the pattern part comprises a convex part, for example is a circle.
- the material consists of particles in contact with each other.
- the material is a powder.
- the layer of material preferably comprises a superposition of particle layers.
- the first ejection and / or the second ejection comprises an addressing of pixels to be ejected, the pixels being formed of a plurality of particles.
- an ejection means may apply a transport fluid stream carrying material from the carrier, the transport fluid stream passing only predetermined portions of the carrier.
- the provision of a layer of material comprises forming the layer of material on a support which is a sieve.
- a sieve is a porous media (for example the sieve may have through holes in which a gas can pass).
- At least one of the first and second ejections is performed using an ejection means.
- the ejection means is preferably movable relative to the support.
- the ejection means is preferably arranged to generate a transport fluid stream carrying material from the carrier, the transport fluid stream passing only predetermined portions of the carrier.
- the layer of material adheres to the screen by suction through the screen.
- the support is impenetrable by the material.
- the material is therefore only on a first surface of the support, and not in the support. This allows the material ejected by the second ejection is particularly dense, avoiding a space between pieces of the pattern part.
- the support is a sieve
- it is preferably impenetrable by the material of the layer.
- the particles forming the layer remain locked against a first surface of the sieve and do not penetrate the sieve.
- a sieve allows the layer of material to be formed by on the sieve and not in the sieve or sieve cavities.
- particles of various sizes, shapes and materials may be included in the layer against the first surface of the sieve without there being any condition on the material, size or shape of the particles.
- the provision of a layer of material comprises forming the layer of material on a cylindrical support.
- the support could have any shape while remaining within the scope of the invention. For example, it could be plan.
- the method comprises a determination of the material ejected during the first ejection according to the material pattern.
- This determination is preferably performed by a computer system. It takes place before the first ejection.
- the method comprises moving the layer of material during the first ejection, and / or during the second ejection, and / or between the first ejection and the second ejection.
- the support is preferably arranged to move the layer of material.
- the first ejection takes place during a first passage of the layer of material facing the ejection device and the second ejection takes place during a subsequent passage of the layer of material facing the device. ejection. It is also possible that the first ejection takes place at a first location and the second ejection takes place at a second location. It is then preferable that the first ejection is carried out by a first part of the ejection means, and that the second ejection is carried out by a second part of the ejection means.
- the invention further provides a three-dimensional printing method comprising the formation of a material pattern by a method according to any embodiment of the invention.
- the invention further provides a pattern of material formed by a method according to any embodiment of the invention.
- the invention further proposes a device for forming a material pattern on a portion of the substrate, arranged to implement a method according to any embodiment of the invention and comprising:
- a support provided to support a layer of material, the layer of material comprising a pattern portion of the material for forming the pattern on the substrate portion;
- a substrate comprising the substrate portion
- An ejection means arranged to produce:
- a second material ejection ejecting the pattern portion onto the substrate portion and forming the material pattern on the substrate portion.
- the ejection means may comprise a first part making the first ejection and a second part performing the second ejection.
- the first and second parts of the ejection means are not necessarily mechanically coupled to each other.
- the device comprises a holding means arranged to retain the layer of material on the support.
- the holding means is preferably a suction means, for example a means for creating a depression of the second side of the support relative to the first side if the support is a screen.
- the layer of material is on a first side of the support and the ejection means is on the second side of the support.
- the invention also proposes a three-dimensional printing system comprising at least once a device according to any embodiment of the invention, and an agglomeration means.
- the sintering means makes it possible to adhere at least a portion of the deposited pattern to a three-dimensional printing structure, so that the material of the pattern is integrated into this three-dimensional printing structure.
- the invention further proposes a computer program comprising instructions that drive a device according to any embodiment of the invention to be executed:
- a first ejection of material ejecting material other than on the part of the substrate, the material ejected during the first ejection bordering at least partially the part of the pattern, and
- a second material ejection ejecting the pattern portion onto the substrate portion and forming the material pattern on the substrate portion.
- the invention further provides a computer readable medium on which is recorded this program.
- the invention proposes a device for forming a pattern of material on a portion of the substrate and comprising:
- a support provided to support a layer of material, the layer of material comprising a pattern portion of the material for forming the pattern on the substrate portion, the support being a sieve, the layer of material being first side of the support,
- An ejection means arranged to generate a flow of transport fluid through the support, and located on a second side of the support which is opposite the first side of the support, the device being arranged so that the flow of transport fluid conveys material from the support to the substrate portion and passes through only predetermined portions of the support, the ejection means having one or more orifices directed toward the support and arranged to guide the flow of transport fluid.
- the presence of at least one orifice in the ejection means makes it possible to obtain a particularly good resolution of the material pattern because it makes it possible to precisely direct the flow of transport fluid.
- the device is arranged to control the passage of the transport fluid flow through the orifices.
- each orifice is connected to a valve.
- the ejection means comprises ejection nozzles and each ejection nozzle terminates in one of the orifices.
- the device is arranged to move the layer of material relative to the ejection means and / or to the substrate portion.
- the speed of displacement of the layer of material can be adapted to obtain a particular effect. For example, the resolution can be improved by decreasing this speed.
- the device is arranged to move the ejection means with respect to the layer of material and / or to the substrate part.
- the speed of movement of the ejection means may be adapted to achieve a particular effect.
- the ejection means comprises orifices arranged in at least a first direction and / or a second direction, and is offset relative to the support in a third direction, each of the three directions being perpendicular to the other two.
- the flow of transport fluid is essentially in the third direction.
- the layer of material advances in the first direction in the area where the material is ejected from the layer.
- the third direction is preferably the vertical direction.
- the device is arranged to perform at least one of the following operations:
- a translation of the ejection means along an axis parallel to the first direction A translation of the ejection means along an axis parallel to the second direction,
- the invention further proposes a three-dimensional printing system comprising at least once the device according to one of the embodiments of the invention, and an agglomeration means.
- FIG. 1 is a flowchart schematizing a method according to one embodiment of the invention
- FIG. 2 is a series of top views showing steps of an exemplary embodiment of the method according to FIG. 1,
- FIG. 3 is a series of sectional views along the line A-A of FIG. 2a, representing steps of an embodiment of the method according to FIG. 1,
- FIG. 4 is a series of sectional views showing steps of an exemplary embodiment of the method according to FIG. 1,
- FIG. 5 illustrates various possible configurations of pixels ejected during a first ejection and a part of the pattern ejected during a second ejection
- FIG. 6 is a vertical sectional view of a device for forming a pattern of material on a portion of a substrate according to one embodiment of the invention
- FIG. 7 illustrates a particular configuration of the device represented in FIG. 6,
- first and second serve only to differentiate the different elements and do not imply order between these elements.
- a first aspect of the invention relates in particular to a method 1 for forming a pattern 61 of material on a portion of the substrate 60, and a device 3 that can be used in the context of this method.
- Figures 1, 2, 3 and 4 illustrate a method 1 according to one embodiment of the invention.
- An object of method 1 is to form a pattern 61 of material on a portion of substrate 60.
- Pattern 61 preferably forms a relatively flat object.
- Method 1 consists of three main steps. It may include other steps or its three steps could be included in a more general method, for example a 2D or 3D printing method.
- the method 1 may use a device 3 according to the invention, which comprises a support 10, a substrate which comprises the substrate portion 60, and an ejection means 40.
- the device 3 may be used to Many other purposes than the realization of the method 1.
- the ejection means 40 may comprise orifices 41, as illustrated in Figures 6, 8.
- the material ejected through an orifice 41 may be called "pixel".
- a first step of method 1 is to provide 200 a layer 20 of material, preferably on the support 10. This step is illustrated in Figures 2a, 3a and 4a.
- the layer 20 is on a first side 101 of the support 10, on a first surface thereof.
- the other side of the support 10 may be called the second side 102.
- the layer 20 of material is preferably without holes and uniform.
- the material is preferably composed of particles. She could be in any other form while remaining within the scope of the present invention. For example, it could be in the form of paste or viscous liquid.
- the support 10 is preferably a sieve.
- the support 10 is preferably plane ( Figure 3) or cylindrical ( Figure 4). It could have any other form while remaining within the scope of the invention.
- the supply 200 of the layer 20 of material may comprise feeding a reservoir 80 of material and a movement of the support 10 (for example a rotation) causes the formation of the layer 20, for example by scraping using a scraper 86.
- the layer 20 is held on the screen by suction by a lower pressure of the second side 102 of the sieve that the first side 101.
- the device 3 according to the invention may comprise a means of suction, preferably located on the second side 102 of the support 10, for example inside the support 10 if it is cylindrical.
- the layer 20 of material comprises material which will form the pattern 61 on the substrate portion 60 and which may be referred to as a pattern portion 21.
- This pattern portion 21 is shown in dashed lines in Figure 2a to show that preferably, before the first ejection 201, it is indistinguishable from the rest of the layer 20.
- a second step of the method 1 is a first ejection 201 of material, which ejects a portion of the layer 20 so that the ejected material 31 arrives elsewhere than on the substrate portion 60, so that is not part of reason 61.
- This step is illustrated in Figures 2b, 3b and 4b.
- the material ejected during the first ejection 201 may arrive in a manifold 30.
- the hollows due to the first ejection are referenced 22 in Figures 2b and 3b, and references 22a, 22b and 22c in Figure 4b.
- the first ejection 201 is made using the ejection means 40. This is preferably the second side 102 of the support 10.
- the ejection means 40 generates a flow of transport fluid 2 carrying material from the support 10.
- the transport fluid stream 2 passes through only predetermined portions of the support 10.
- the first ejection 201 may comprise a plurality of ejection steps. For example, it is clear that the recesses 22a to 22c shown in FIG. 4b have been created successively, as a function of the rotation of the support 10 because there is a displacement of the layer 20 during the first ejection 201.
- the first ejection 201 is preceded by a determination of the material to be ejected 31 during the first ejection 201.
- This determination is based on information concerning the pattern 61 of material, in particular on the shape of this pattern. 61. It can be based on other information, such as device characteristics 3, resolution specifications, characteristics of the material, etc.
- This determination is preferably performed by computer software.
- the pattern portion 21 has a periphery consisting of edges.
- the ejected material 31 during the first ejection 201 preferably comprises the material which abuts a first edge 24 and a second edge 25 of this periphery, and which is outside the pattern portion 21.
- the first 24 and second 25 edges can be rectilinear or curved.
- the first 24 and second 25 edges are preferably one after the other.
- the first 24 and second 25 edges are preferably an angle ⁇ ( Figure 5) other than zero, more preferably less than 180 °.
- the pattern portion 21 may have convex portions 26, which are projecting portions, such as protuberances or points, of the pattern portion 21.
- convex portions 26 are projecting portions, such as protuberances or points, of the pattern portion 21.
- the pattern portion 21 may have concave portions 27, which surround hollows of the pattern portion 21.
- the first ejection 201 does not eject the portions of the layer 20 which abut the concave portions 27 of the pattern part 21.
- a third step of the method 1 is a second ejection 202 of material, which ejects a portion of the layer 20 so that the ejected material arrives on the substrate portion 60, so that it forms the pattern 61.
- This step is illustrated in Figures 2c, 3c and 4c.
- the second ejection 202 is done using the ejection means 40.
- the flow of transport fluid 2 generated by the ejection means 40 passes through only predetermined portions of the support 10, so that ejecting the material of the pattern 61.
- Figures 2c, 3c and 4c show the hole 23 or 23c in the layer 20 resulting from the first ejection 201 and at least a portion of the second ejection 202.
- FIG. 4c also makes it possible to illustrate a displacement of the layer 20 during the second ejection 202.
- the reference 61c corresponds to a first piece of the pattern 61. Other pieces may be deposited later during the rotation of the support. 10. For example, a piece next to the recess 22a and another piece adjacent the recess 22b may be ejected onto the substrate 60.
- Figures 3c and 4c illustrate in particular the position 62 or 62c that occupied the material of the pattern 61 before the second ejection 202.
- the support 10 has a return back. This means that the first ejection 201 takes place during a first passage of the layer 20 of material facing the ejection device 40 and the second ejection 202 takes place during a subsequent passage of the layer 20 of material facing the device ejection 40.
- first ejection 201 takes place in a first location of the support 10, for example horizontally to the right, and that the second ejection 202 takes place towards the low.
- first ejection 201 takes place in a first location of the support 10, for example horizontally to the right
- second ejection 202 takes place towards the low.
- the second ejection 202 for a piece next to the recess 22a could then be done approximately at the same time as the first ejection 201 corresponding to the part 22c .
- the device 3 may include a vacuum cleaner 85 for removing at least a portion of the layer 20. It allows cleaning the support 10. It is particularly useful if the support 10 is a sieve and if the layer 20 is made of powder retained on the screen by suction from the second side 102 of the support 10.
- FIGS. 5a, 5b and 5c illustrate various possible configurations of the pattern portion 21 and pixels 29 forming part of the ejected material 31 during the first ejection 201. Although the pixels are represented as circular, it may happen that part of the layer having already been removed, a pixel 29 is only a part of disk. This occurs especially when pixels 29 overlap.
- FIG. 5a illustrates a situation where the pattern portion 21 comprises a concave portion 26 delimited by a first edge 24 and a second edge 25 forming an angle ⁇ of less than 180 °. It can be seen that the pattern portion 21, and therefore the pattern 61, may have a dimension 28 smaller than the diameter of a pixel 29.
- Figure 5b illustrates a situation where the pattern portion 21 is concave.
- the periphery of the pattern portion 21 includes a first edge 24 and a second edge 25 at an angle ⁇ of less than 180 °.
- FIG. 5c illustrates a situation where the pattern portion 21 is smaller than a pixel 29.
- the pattern 61 sought is in fact approximately a point on the substrate portion 60. It can be seen that the method according to the invention allows the formation of a particularly small pattern 61.
- a second aspect of the invention relates in particular to a device 4 as illustrated in FIGS. 6, 7 and 8.
- the characteristics described as relating to the device 4 according to the second aspect of the invention may also be present in a device 3 according to the first aspect of the invention.
- the features described as relating to the device 3 according to the first aspect of the invention may also be present in a device 4 according to the second aspect of the invention.
- a first direction 1001 which is the movement direction 1001 of the layer 20 of material in the area of the support 10 in which ejection occurs by the ejection device 40,
- the third direction 1003 is preferably vertical.
- the first 1001 and second 1002 directions are preferably horizontal.
- Figure 6 is a vertical sectional view of a device 4 for forming a pattern 61 of material on a substrate portion 60 according to an embodiment of the second aspect of the invention.
- the device 4 preferably comprises:
- a support 10 provided for supporting a layer 20 of material, the layer 20 of material comprising a pattern portion 21 made of the material for forming the pattern 61 on the substrate portion 60, the support 10 being a sieve, the layer 20 of material lying on a first side 101 of the support 10,
- An ejection means 40 arranged to generate a flow of transport fluid 2 through the support 10, and located on a second side 102 of the support 10 which is opposite to the first side 101 of the support 10, the fluid flow of transport 2 being provided to transport material from the support 10 to the substrate portion 60 and to pass through only predetermined portions of the support 10, the ejection means 40 having one or more orifices 41 directed towards the support 10 and arranged to guide the flow of transport fluid 2.
- the ejection means 40 comprises orifices 41 arranged in at least one of the first 1001 and second 1002 directions.
- each orifice 41 is connected to a fluid communication means 42, for example to a pipe.
- a fluid communication means 42 for example to a pipe.
- the device 4 is arranged to be able to move at least one of the following elements with respect to one or more of the others:
- the layer 20 of material is the layer 20 of material.
- the ejection means 40 and
- the device 4 is arranged to perform at least one of the following operations, or any combination thereof:
- FIG. 7 illustrates a particular configuration of the device 4 represented in FIG. 6. This configuration is also particularly suitable for implementing the method illustrated in FIG. 4.
- the support 10 is essentially a cylinder axis parallel to the second direction 1002.
- the ejection means 40 has a surface according to the first 1001 and second 1002 directions from which the openings 41 open.
- the flow of transport fluid 2 has a component along the third direction 1003.
- FIG. 8 illustrates various configurations of the orifice (s) 41 on the ejection means 40. These configurations are compatible with the first and second aspects of the invention.
- the ejection means 40 comprises only one orifice 41 rectilinear and parallel to the second direction. This allows you to transfer a line in one go.
- the orifices 41 are aligned, preferably in the second direction 1002. This makes it possible to selectively transfer each of the pixels of the line.
- the orifices 41 are on two lines, staggered, that is to say with an offset between the lines. This makes it possible to increase the density of the orifices 41 because the space requirement is smaller.
- the orifices 41 are in three lines, staggered, that is to say with an offset between the lines. This makes it possible to further increase the density of the orifices 41 because the bulk is smaller.
- the orifices 41 are in four rows, staggered, that is to say with an offset between the lines, and the holes 41 which follow are aligned in an oblique. This makes it possible to further increase the density of the orifices 41 because the bulk is smaller.
- the orifices 41 are in four lines, staggered, that is to say with an offset between the lines, and the orifices 41 which do not follow are not aligned in an oblique.
- the positions in the second and third lines are reversed. This makes it possible to have another pixel deposition sequence than the 505 configuration.
- the ejection means 40 may be vibrations in the second direction 1002, or a movement back and forth in the second direction 1002, in the manner of ink jet printers. In the latter case, if the advance in the first direction 1001 is imposed, it is preferable to impose a minimum precision in the first direction 1001.
- a slight vibratory movement in the second direction 1002 of the printing means 40 allows each orifice 41 to cover a larger printing area. We gain then in precision and speed of printing. This can especially be used if the ejection means 40 is essentially fixed.
- the ejection means 40 may comprise only one substantially circular orifice 41. It is then preferred that this orifice 41 performs round trips in the second direction 1002.
- the resolution thus depends in particular on the positioning resolution in the second direction 1002, which is generally very good.
- the speed of the process is however relatively low.
- the ejection means 40 may be arranged so that the orifice 41 or the orifices 41 have an adaptable size.
- the orifices 41 may be enlarged when the pattern 61 is large, or for a low resolution and high speed, and be narrowed when the pattern 61 requires a high resolution. This can be done for example via a diaphragm or a valve that opens more or less.
- each orifice 41 be consisting of a set of small holes that are open or closed depending on the chosen resolution.
- the invention relates to a method 1 and a device 3 for depositing a pattern 61 of material from a support 10 on a part of the substrate 60.
- the deposition 202 of the The material forming the pattern 61 is preceded by a pre-ejection 201 which ejects material which abuts, on the support 10, the material intended to form the pattern 61.
- the invention relates to a device 4 for depositing a pattern 61 of material from a support 10 on a substrate portion 60.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2018/5210A BE1026152B1 (fr) | 2018-03-28 | 2018-03-28 | Méthode et dispositif pour former un motif de matière |
EP18164492 | 2018-03-28 | ||
PCT/EP2019/057583 WO2019185626A1 (fr) | 2018-03-28 | 2019-03-26 | Méthode et dispositif pour former un motif de matière |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3774368A1 true EP3774368A1 (fr) | 2021-02-17 |
Family
ID=65895017
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19712780.6A Withdrawn EP3774368A1 (fr) | 2018-03-28 | 2019-03-26 | Méthode et dispositif pour former un motif de matière |
Country Status (2)
Country | Link |
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EP (1) | EP3774368A1 (fr) |
WO (1) | WO2019185626A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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TWI706866B (zh) * | 2019-11-25 | 2020-10-11 | 倉和股份有限公司 | 具有震動結構的印刷網版系統及印刷方法 |
DE102022118368A1 (de) | 2022-07-22 | 2024-01-25 | Schaeffler Technologies AG & Co. KG | Wälzlagerelement und Verfahren zur Herstellung eines Wälzlagerelementes |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5767877A (en) | 1996-08-13 | 1998-06-16 | Xerox Corporation | Toner jet printer |
JP2016064649A (ja) * | 2014-09-24 | 2016-04-28 | キヤノン株式会社 | 立体物の製造に用いられる造形粒子、それを含む粉体、及びそれを用いた立体物の製造方法 |
-
2019
- 2019-03-26 WO PCT/EP2019/057583 patent/WO2019185626A1/fr unknown
- 2019-03-26 EP EP19712780.6A patent/EP3774368A1/fr not_active Withdrawn
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WO2019185626A1 (fr) | 2019-10-03 |
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