WO2017172574A1 - Procédé et appareil de fabrication additive comprenant une feuille antiadhésive - Google Patents

Procédé et appareil de fabrication additive comprenant une feuille antiadhésive Download PDF

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Publication number
WO2017172574A1
WO2017172574A1 PCT/US2017/024239 US2017024239W WO2017172574A1 WO 2017172574 A1 WO2017172574 A1 WO 2017172574A1 US 2017024239 W US2017024239 W US 2017024239W WO 2017172574 A1 WO2017172574 A1 WO 2017172574A1
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WO
WIPO (PCT)
Prior art keywords
additive manufacturing
release sheet
cement
print
print head
Prior art date
Application number
PCT/US2017/024239
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English (en)
Inventor
Keith KLINEDINST
Kim Loan Thi Ly
Original Assignee
Sabic Global Technologies B.V.
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 Sabic Global Technologies B.V. filed Critical Sabic Global Technologies B.V.
Publication of WO2017172574A1 publication Critical patent/WO2017172574A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—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
    • B29C64/245—Platforms or substrates
    • 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

Definitions

  • the present disclosure relates to systems and methods of additive
  • a print head and nozzle applies an additive manufacturing material onto a print bed in a series of successive layers to build a three- dimensional part.
  • a print sheet or release sheet is sometimes laid onto the print bed to facilitate removal of the printed part from the print bed.
  • One particular release sheet currently in use is a composite formed of a layer of an aluminum metal sheet as a bottom layer (directly adjacent to the print bed) followed by a layer of screen/mesh material, and then a top layer of acrylonitrile-butadiene-styrene (ABS) polymeric material.
  • ABS acrylonitrile-butadiene-styrene
  • this particular composite release sheet may perform acceptably when used in an additive manufacturing process and with an additive manufacturing material that can be applied at relatively low temperatures (e.g., 180-200°F), at higher application temperatures the ABS layer can melt and/or bond to the printed part, resulting in additional undesirable material being added to the printed part and/or damage to the release sheet. In addition, at elevated temperatures the metal/aluminum layer can warp, resulting in manufacturing defects in the printed part due to the release sheet (printing surface) no longer being in its original position.
  • FIG. 1 is a side view of an additive manufacturing apparatus according to an aspect of the disclosure
  • FIG. 2 is a top perspective view of a print bed according to an aspect of the disclosure.
  • aspects of the disclosure relate to an apparatus for additive manufacturing of a part, the apparatus including a print bed including a release sheet, a print head/nozzle system including at least one print head and nozzle, and a physical control system providing for relative motion between the print head/nozzle system and the print bed.
  • the release sheet includes a cement material, and the print head/nozzle system is configured to apply an additive manufacturing material onto the print bed.
  • Further aspects of the disclosure are related to a method for additive manufacturing a printed part, including applying a plurality of layers of an additive manufacturing material onto a print bed to form the printed part.
  • the print bed includes a release sheet including a cement material.
  • the present disclosure pertains to an apparatus for additive manufacturing of a part, the apparatus including a print bed including a release sheet, a print head/nozzle system including at least one print head and nozzle, and a physical control system providing for relative motion between the print head/nozzle system and the print bed.
  • the release sheet includes a cement material
  • the print head/nozzle system is configured to apply an additive manufacturing material onto the print bed.
  • Further aspects of the disclosure are related to a method for additive manufacturing a printed part, including applying a plurality of layers of an additive manufacturing material onto a print bed to form the printed part.
  • the print bed includes a release sheet including a cement material.
  • the apparatus and method provide a print bed including a release sheet having improved releasability, thermal stability, dimensional stability, and/or durability properties as compared to currently available release sheets.
  • cement material includes mixtures of two or more cement materials.
  • Ranges can be expressed herein as from one particular value, and/or to another particular value. When such a range is expressed, another aspect includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent 'about,' it will be understood that the particular value forms another aspect. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint.
  • the terms "about” and “at or about” mean that the amount or value in question can be the value designated some other value approximately or about the same. It is generally understood, as used herein, that it is the nominal value indicated ⁇ 10% variation unless otherwise indicated or inferred. The term is intended to convey that similar values promote equivalent results or effects recited in the claims. That is, it is understood that amounts, sizes, formulations, parameters, and other quantities and characteristics are not and need not be exact, but can be approximate and/or larger or smaller, as desired, reflecting tolerances, conversion factors, rounding off, measurement error and the like, and other factors known to those of skill in the art.
  • an amount, size, formulation, parameter or other quantity or characteristic is “about” or “approximate” whether or not expressly stated to be such. It is understood that where "about” is used before a quantitative value, the parameter also includes the specific quantitative value itself, unless specifically stated otherwise.
  • the terms “optional” or “optionally” means that the subsequently described event or circumstance can or cannot occur, and that the description includes instances where said event or circumstance occurs and instances where it does not.
  • the phrase “optional filler material” means that the filler material can or cannot be included and the description includes compositions that include and both do not include a filler material.
  • compositions of the disclosure Disclosed are the components to be used to prepare the compositions of the disclosure as well as the compositions themselves to be used within the methods disclosed herein. These and other materials are disclosed herein, and it is understood that when combinations, subsets, interactions, groups, etc. of these materials are disclosed that while specific reference of each various individual and collective combinations and permutation of these compounds cannot be explicitly disclosed, each is specifically contemplated and described herein. For example, if a particular compound is disclosed and discussed and a number of modifications that can be made to a number of molecules including the compounds are discussed, specifically contemplated is each and every combination and permutation of the compound and the modifications that are possible unless specifically indicated to the contrary.
  • polycarbonate refers to an oligomer or polymer comprising residues of one or more dihydroxy compounds, e.g., dihydroxy aromatic compounds, joined by carbonate linkages; it also encompasses homopoly carbonates, copoly carbonates, and (co)poly ester carbonates.
  • compositions disclosed herein have certain functions.
  • aspects of the disclosure relate to an apparatus 100 for additive manufacturing of a part 10, the apparatus 100 including a print bed 200, a print head/nozzle system 300, and a physical control system 400 providing for relative motion between the print head/nozzle system 300 and the print bed 200.
  • the print bed 200 includes a support table 210 and a release sheet 220.
  • the support table underlies the release sheet 220 and provides support thereto.
  • the support table 210 may be stationary or movable, as discussed in further detail below.
  • the release sheet 220 includes a cement material.
  • the cement material can include any material used in typical cement compositions, including but not limited to limestone, shells, shale, clay, slate, blast furnace slag, silica sand, and iron ore.
  • the cement material includes Portland cement.
  • Portland cement There are numerous types of Portland cement, including but not necessarily limited to ASTM Types I, II, III, IV, V, la, Ila, Ilia II(MH), and II(MH)a; European EN 197 types CEM I, II, III, IV and V; Canadian CSA A3000-08 types GU, GUL*, MS, MH, MHL*, LH, LHL*, and HS; and White Portland cement or white ordinary Portland cement. Any type of Portland cement may be used in the cement material according to aspects of the present disclosure.
  • the cement material may include a filler material.
  • suitable filler materials include, but are not limited to, silica sand, pulverized bottom ash, fly ash, pulverized foundry clinker, sand, pulverized rock, stone and other pulverized recycled materials such as concrete in which the lime has been neutralized or removed.
  • the cement material includes additional materials that provide adhesion or other properties to the cement material and/or filler, or that provide other desirable properties to the release sheet.
  • additional materials include, but are not limited to, cellulose, calcium sulfate dihydrate, perlite, silica, calcium silicate, calcium carbonate, calcium aluminum silicate, carbon black, and combinations thereof.
  • the cement material is incorporated into a reinforcing substrate.
  • the reinforcing substrate may be any material that supports the cement material (and optional filler material and additional materials if provided) in the release sheet 220.
  • the reinforcing substrate is a scrim.
  • the scrim is a woven scrim, a nonwoven scrim or a knit scrim.
  • Purely exemplary reinforcing substrate materials for use in the release sheet 220 include woven fiberglass mesh scrim and glass or polypropylene nonwoven scrim, although any suitable materials could be used for the reinforcing substrate.
  • an off-the-shelf (e.g., pre-manufactured) cement board may be used for the release sheet 220.
  • cement boards include Durock® Cement Board, available from USG Corporation, and HardieBacker® Cement Board, available from James Hardie Building Products.
  • Such off-the-shelf cement boards include a cement material (such as Portland cement), filler material(s), and additional materials incorporated into a reinforcing material such as a woven-fiber scrim. If off-the- shelf cement boards are not the correct size for the print bed 200/support table 210 of the apparatus 100, then as shown in FIG.
  • the release sheet 220 may be cut or laid side-by-side and/or end-to-end until the release sheet 220 is the desired size. Gaps between the cement boards, if any, may be covered if desired using a suitable covering means, such as polyimide tape or painter's tape. Further, in some aspects it may be desirable to weigh the release sheet 220 down with weights or to otherwise secure the release sheet to the support table 210 to prevent movement or slippage therebetween. This may be particularly desirable if there are vibrations in the apparatus 100 that could cause the release sheet 220 to move, which could cause printing defects in the printed part 10.
  • the cement material and optional filler and additional materials may provide the release sheet 220 with properties that make it desirable for use as a release sheet in additive manufacturing applications.
  • the release sheet 220 may be easily releasable from the printed part 10 and/or may be thermally stable, as the cement material(s) described herein will not react or bond with additive manufacturing materials 330 even under high
  • release sheet 220 may also be noncombustible due to the cement material included therein.
  • the release sheet 220 according to aspects of the disclosure may be used in additive manufacturing applications at additive manufacturing material 330 application temperatures of at least about 300°F.
  • the release sheet 220 according to aspects of the disclosure may be used in additive manufacturing applications at additive manufacturing material 330 application temperatures of at least about 400°F, or at additive manufacturing material 330 application temperatures of at least about 500°F, or at additive manufacturing material 330 application temperatures of at least about 600°F, or even at additive manufacturing material 330 application temperatures of at least about 700°F.
  • This is in contrast to current release sheet configurations which only support maximum additive manufacturing material 330 temperatures of about 180 to 200°F due to the issues discussed above.
  • the release sheet 220 may also have a dimensional stability such that it is durable and/or reusable for use in multiple printing jobs and/or useable for at least about 80 hours of printing.
  • the release sheet is useable for at least about 100 hours of printing, or for at least about 120 hours of printing, or for at least about 150 hours of printing, or for at least about 200 hours of printing.
  • Incorporation of a reinforcing substrate into the cement material may further improve the dimensional stability of the release sheet and enhance its durability.
  • release sheet 220 it may be desirable to condition the release sheet 220 to remove excess moisture from the cement material, as described in further detail below. Conditioning the release sheet may prevent cracking at elevated temperatures and extend its durability. It may also be desirable to clean the release sheet of excess dust and dirt to ensure good contact between the release sheet 220 and the applied additive manufacturing material 330.
  • the print head/nozzle system 300 includes at least one print head 310 and nozzle 320.
  • the print head/nozzle system 300 may be stationary or moveable, as discussed in further detail below.
  • An additive manufacturing material 330 may be loaded into the print head 310.
  • Suitable additive manufacturing materials 330 include, but are not limited to, polymeric base materials such as acrylonitrile butadiene styrene (ABS), polyphenylene sulfide (PPS), polyphenylsulfone (PPSU), polyetheretherketone (PEEK), polyetherimide (PEI), polycarbonate (PC), and combinations thereof.
  • ABS acrylonitrile butadiene styrene
  • PPS polyphenylene sulfide
  • PPSU polyphenylsulfone
  • PEEK polyetheretherketone
  • PEI polyetherimide
  • PC polycarbonate
  • Additional materials may be incorporated into the polymeric base material to enhance the properties of the polymeric base material and/or to provide the additive manufacturing material 330 with additional properties.
  • fibers such as carbon fibers or glass fibers may be incorporated into the polymeric base material to improve the strength and thermal stability of the additive manufacturing material 330.
  • the additive manufacturing material 330 may be heated and applied onto the print bed 200 in a plurality of layers 340 to form the printed part 10.
  • the print head/nozzle system 300 includes one print head
  • multiple individual print head/nozzle systems 300 could be used to apply all of the same additive manufacturing material 330 onto the print bed 200 in a plurality of layers 340 to form the printed part 10, or in other aspects (not illustrated) multiple individual print head/nozzle systems 300 could be used to apply different additive manufacturing materials 330 onto the print bed 200 at selective locations in the plurality of layers 340 to form the printed part 10.
  • a single print head/nozzle system 300 could include a plurality of print heads 310, each of the plurality of print heads 310 having its own nozzle 320, with each print head 310 and nozzle 320 applying an additive manufacturing material 330, which may be the same or different, onto the print bed 200 in a plurality of layers 340 to form the printed part.
  • aspects of the apparatus 100 include a physical control system 400 providing for relative motion between the print head/nozzle system 300 and the print bed 200.
  • the physical control system 400 may be a system, including but not limited to a gear system, a hydraulic system, an electric system, or other suitable system for moving the print head/nozzle system 300 while keeping the support table 210 stationary to achieve relative motion between the support table 210 and the print head/nozzle system 300.
  • the physical control system 400 may be a system, including but not limited to a gear system, a hydraulic system, an electric system, or other suitable system for moving the support table 210 while the keeping print head/nozzle system 300 stationary to achieve relative motion between the support table 210 and the print head/nozzle system 300.
  • motion refers to a three-dimensional coordinate system having an X-axis, Y-axis and Z-axis that are all perpendicular to one another
  • relative motion refers to both horizontal motion along both the X-axis and Y-axis (perpendicular to the print head/nozzle system 300) and vertical motion along the Z-axis (parallel to the print head/nozzle system 300).
  • the printed part 10 is typically printed in a horizontal plane defined by the X-axis and Y-axis (parallel to the support table 210), but it need not be printed in this manner - it could, for example, be printed at an angle relative to the support table 210.
  • a controller 500 receives computer-readable instructions for printing the part
  • the computer-readable instructions may be generated by a computer system, and may include, e.g., schematics, diagrams, specifications or other data that would allow the additive manufacturing system to form the printed part 10.
  • the computer-readable instructions may include standard information that is known in the art, and in some aspects are provided as a three-dimensional (3D) computer-aided design (CAD) stereolithography (STL) file format or two-dimensional (2D) CAD file which may be converted into an STL file format.
  • the controller 500 operates the physical control system 400 to print the part 10 in accordance with the computer-readable instructions.
  • the apparatus 100 is suitable for use in Big Area Additive Manufacturing (BAAM) additive manufacturing applications.
  • BAAM Big Area Additive Manufacturing
  • the use of a release sheet 220 including a cement material in the print bed 200 allows BAAM systems to be operated at much higher temperatures (300-700°F) than previously possible, allowing for a greater selection of additive manufacturing materials and better customization of the final properties of the printed part.
  • aspects of the disclosure also relate to methods for additive manufacturing a printed part 10, including applying a plurality of layers 340 of an additive manufacturing material 330 onto a print bed 200 to form the printed part 10.
  • the print bed 200 includes a release sheet 220 including a cement material.
  • the print bed 200 includes a support table 210, which may underlie the release sheet 220 and provide support thereto.
  • the support table 210 may be stationary or movable, as discussed above.
  • the additive manufacturing material 330 is applied onto the print bed 200 through a print head/nozzle system 300 such as that described above.
  • the print head/nozzle system 300 includes at least one print head 310 and nozzle 320.
  • the print head/nozzle system 300 may be stationary or moveable, as discussed above.
  • the additive manufacturing material 330 may be loaded into the print head 310; suitable additive manufacturing materials 330 include, but are not limited to, any of those materials described herein.
  • the print head/nozzle system 300 may include multiple print head/nozzle systems 300 and/or a single print head/nozzle system 300 having a plurality of print heads 310 and nozzles 320 as described above.
  • the cement material in the method may include any material used in typical cement compositions, including but not limited to the materials described above for the apparatus, including but not limited to a filler material and other additional materials (not duplicated here).
  • the cement material is incorporated into a reinforcing substrate.
  • the reinforcing substrate may be any material that supports the cement material (and optional filler material and additional materials if provided) in the release sheet 220.
  • the reinforcing substrate may be, but is not limited to, any of the materials described above with respect to the apparatus (not duplicated here).
  • an off-the-shelf (e.g., pre-manufactured) cement board may be used for the release sheet 220, such as but not limited to those exemplary cement boards described above.
  • the plurality of layers of additive manufacturing material are applied onto the print bed is performed at a temperature of at least about 300°F.
  • the plurality of layers of additive manufacturing material are applied onto the print bed at a temperature of at least about 400°F, or at a temperature of at least about 500°F, or at a temperature of at least about 600°F, or even at a temperature of at least about 700°F.
  • the release sheet 220 may have a dimensional stability such that it may be reused in the method in multiple printing j obs and/or useable for at least about 80 hours of printing.
  • the release sheet is useable for at least about 100 hours of printing, or for at least about 120 hours of printing, or for at least about 150 hours of printing, or for at least about 200 hours of printing.
  • Incorporation of a reinforcing substrate into the cement material may further improve the dimensional stability of the release sheet and enhance its durability.
  • conditioning the release sheet may prevent cracking at elevated temperatures and extend its durability. Conditioning may include heating the release sheet 220 at elevated temperatures (e.g., above 200°F) for several hours to remove excess moisture from the cement material. Conditioning the release sheet may prevent cracking at elevated temperatures and extend its durability. It may also be desirable to clean the release sheet of excess dust and dirt to ensure good contact between the release sheet 220 and the applied additive manufacturing material 330.
  • relative motion between the print head/nozzle system 300 and the print bed 200 is controlled by a physical control system 400 such as that described above.
  • the physical control system 400 may move the print head/nozzle system 300 while maintaining the support table 210 stationary or it may move the support table 210 while maintaining the print head/nozzle system 300 stationary.
  • Movement of the print head/nozzle system 300 or the support table 210 may be in the horizontal and the vertical direction as described herein.
  • the physical control system 400 may be controlled by a controller 500, which receives computer-readable instructions for printing the part 10 in accordance with the above description.
  • the method is used in a Big Area
  • BAAM additive Manufacturing
  • Example 1 An apparatus for additive manufacturing of a part, the apparatus comprising:
  • a print bed comprising a release sheet comprising a cement material
  • a print head/nozzle system comprising at least one print head and nozzle, the print head/nozzle system configured to apply an additive manufacturing material onto the print bed;
  • a physical control system providing for relative motion between the print head/nozzle system and the print bed.
  • Example 2 The apparatus according to example 1 , wherein the cement material further comprises a reinforcing substrate.
  • Example 3 The apparatus according to example 2, wherein the reinforcing substrate is a scrim, and the scrim is woven, nonwoven or knit.
  • Example 4 The apparatus according to any of the previous examples, wherein the release sheet comprises cement board.
  • Example 5 The apparatus according to any of the previous examples, wherein the cement material comprises Portland cement.
  • Example 6 The apparatus according to example 5, wherein the cement material further comprises a filler material.
  • Example 7 The apparatus according to any of the previous examples, wherein the cement material comprises one or more of cellulose, calcium sulfate dihydrate, perlite, silica, calcium silicate, calcium carbonate, calcium aluminum silicate, and carbon black.
  • Example 8 The apparatus according to any of the previous examples, wherein the additive manufacturing is big area additive manufacturing.
  • Example 9 The apparatus according to any of the previous examples, wherein the part releases from the release sheet without sticking or bonding thereto.
  • Example 10 A method for additive manufacturing a printed part, comprising applying a plurality of layers of an additive manufacturing material onto a print bed to form the printed part,
  • the print bed comprises a release sheet comprising a cement material.
  • Example 11 The method according to example 10, wherein the additive manufacturing material is applied onto the print bed through a print head/nozzle system.
  • Example 12 The method according to example 10 or 11 , wherein the cement material further comprises a reinforcing substrate.
  • Example 13 The method according to example 12, wherein the reinforcing substrate is a scrim, and the scrim is woven, nonwoven or knit.
  • Example 14 The method according to any of examples 10 to 13, wherein the cement material comprises Portland cement.
  • Example 15 The method according to any of examples 10 to 14, wherein the cement material further comprises a filler material.
  • Example 16 The method according to any of examples 10 to 15, wherein the cement material comprises one or more of cellulose, calcium sulfate dihydrate, perlite, silica, calcium silicate, calcium carbonate, calcium aluminum silicate, and carbon black.
  • Example 17 The method according to any of examples 10 to 16, wherein the additive manufacturing is big area additive manufacturing.
  • Example 18 The method according to any of examples 10 to 17, wherein the part releases from the release sheet without sticking or bonding thereto.
  • Example 19 The method according to any of examples 10 to 18, further comprising conditioning the release sheet prior to applying the plurality of layers of the additive manufacturing material onto the print bed.
  • Example 20 The method according to any of examples 10 to 19, wherein the step of applying the plurality of layers of additive manufacturing material onto the print bed is performed at a temperature of at least about 300°F.
  • present inventors also contemplate examples using any combination or permutation of those elements shown or described (or one or more aspects thereof), either with respect to a particular example (or one or more aspects thereof), or with respect to other examples (or one or more aspects thereof) shown or described herein.
  • Method examples described herein can be machine or computer-implemented at least in part. Some examples can include a computer-readable medium or machine- readable medium encoded with instructions operable to configure an electronic device to perform methods as described in the above examples.
  • An implementation of such methods can include code, such as microcode, assembly language code, a higher-level language code, or the like. Such code can include computer readable instructions for performing various methods. The code may form portions of computer program products. Further, in an example, the code can be tangibly stored on one or more volatile, non-transitory, or nonvolatile tangible computer-readable media, such as during execution or at other times.
  • Examples of these tangible computer-readable media can include, but are not limited to, hard disks, removable magnetic disks, removable optical disks (e.g., compact disks and digital video disks), magnetic cassettes, memory cards or sticks, random access memories (RAMs), read only memories (ROMs), and the like.

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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)
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Abstract

L'invention concerne un appareil (100) de fabrication additive d'une pièce (10) comprenant un lit d'impression (200) comportant une feuille antiadhésive (220), un système tête d'impression/buse (310), et un système de commande physique (400) permettant un mouvement relatif entre le système tête d'impression/buse (310) et le lit d'impression (200). La feuille antiadhésive (220) comprend un matériau de ciment. Le système tête d'impression/buse (310) comprend au moins une tête d'impression et une buse et est conçu pour appliquer un matériau de fabrication additive (330) sur le lit d'impression (200). Selon certains aspects, la feuille antiadhésive (220) comprend un matériau de remplissage, un ou plusieurs matériaux supplémentaires, et/ou un substrat de renfort. Selon d'autres aspects, un procédé de fabrication additive d'une pièce imprimée (10) comprend l'application d'une pluralité de couches (340) d'un matériau de fabrication additive (330) sur un lit d'impression (200) pour former la pièce imprimée (10). Le lit d'impression (200) comprend une feuille antiadhésive (220) comprenant un matériau de ciment.
PCT/US2017/024239 2016-03-28 2017-03-27 Procédé et appareil de fabrication additive comprenant une feuille antiadhésive WO2017172574A1 (fr)

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US201662314053P 2016-03-28 2016-03-28
US62/314,053 2016-03-28

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Cited By (4)

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WO2019209863A3 (fr) * 2018-04-23 2020-02-13 Local Motors IP, LLC Procédé et appareil de fabrication additive
US11623401B2 (en) 2017-11-10 2023-04-11 Rapidflight Holdings, Llc Additive manufactured structure having a plurality of layers in a stacking direction that define a plurality of interfaces and method for making the same
US11731342B2 (en) 2018-04-23 2023-08-22 Rapidflight Holdings, Llc Additively manufactured structure and method for making the same
US11813790B2 (en) 2019-08-12 2023-11-14 Rapidflight Holdings, Llc Additively manufactured structure and method for making the same

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US11623401B2 (en) 2017-11-10 2023-04-11 Rapidflight Holdings, Llc Additive manufactured structure having a plurality of layers in a stacking direction that define a plurality of interfaces and method for making the same
WO2019209863A3 (fr) * 2018-04-23 2020-02-13 Local Motors IP, LLC Procédé et appareil de fabrication additive
CN112004655A (zh) * 2018-04-23 2020-11-27 本地汽车知识产权有限责任公司 用于增材制造的方法和设备
JP2022501209A (ja) * 2018-04-23 2022-01-06 ローカル モーターズ アイピー, エルエルシーLocal Motors Ip, Llc 付加製造のための方法及び装置
US11731342B2 (en) 2018-04-23 2023-08-22 Rapidflight Holdings, Llc Additively manufactured structure and method for making the same
US11745423B2 (en) 2018-04-23 2023-09-05 Rapidflight Holdings, Llc Method and apparatus for additive manufacturing
US11813790B2 (en) 2019-08-12 2023-11-14 Rapidflight Holdings, Llc Additively manufactured structure and method for making the same

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