WO2017196337A1 - Appareils d'étalement de matériau de construction pour fabrication additive - Google Patents

Appareils d'étalement de matériau de construction pour fabrication additive Download PDF

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Publication number
WO2017196337A1
WO2017196337A1 PCT/US2016/032066 US2016032066W WO2017196337A1 WO 2017196337 A1 WO2017196337 A1 WO 2017196337A1 US 2016032066 W US2016032066 W US 2016032066W WO 2017196337 A1 WO2017196337 A1 WO 2017196337A1
Authority
WO
WIPO (PCT)
Prior art keywords
spreader
build material
build
containment
area
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/US2016/032066
Other languages
English (en)
Inventor
Jordi Gimenez
Pau MARTIN
Francisco Gomez
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.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Development Co LP
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 Hewlett Packard Development Co LP filed Critical Hewlett Packard Development Co LP
Priority to PCT/US2016/032066 priority Critical patent/WO2017196337A1/fr
Publication of WO2017196337A1 publication Critical patent/WO2017196337A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/205—Means for applying layers
    • B29C64/218—Rollers
    • 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

Definitions

  • Additive manufacturing machines sometimes called 3D printers, produce objects by building up layers of material.
  • Digital data may be processed into slices each defining that part of a layer or layers of build material to be formed into the object.
  • the object slices are formed in a powdered build material spread in layers over the build area.
  • Heat may be used to fuse together the particles in each of the successive layers of powder to form a solid object.
  • Heat to fuse build material in each layer may be generated, for example, by applying a liquid fusing agent to the powder in a pattern based on a single slice of the object and then exposing the patterned area to a light or other energy source.
  • the fusing agent absorbs energy to help sinter, melt or otherwise fuse the patterned powder.
  • Manufacturing may proceed layer by layer and slice by slice until the object is complete.
  • Fig. 1 is an isometric view of a build material spreading apparatus for additive manufacturing implementing one example of a build material containment.
  • Fig. 2 is an isometric view with one wall of the example containment from Fig. 1 removed to show parts of the apparatus inside the containment.
  • Figs. 3 and 4 are isometric sections taken along the lines 3-3 in Fig. 1 and 4-4 in Fig. 2, respectively.
  • Fig. 5 is a side elevation section taken along the line 5-5 in Fig. 1 .
  • FIG. 6 illustrates one example for the layout of an additive
  • Figs. 7 and 8 are isometric and plan views, respectively, illustrating one example of containment sidewalls as build material blockers flanking a spreader roller.
  • Fig. 9 is an isometric partial section taken along the line 9-9 in Fig. 8.
  • Fig. 10 is a detail from Fig. 8.
  • Fig. 1 1 is a detail elevation and partial section showing the edge of the build material along one of the example sidewall blockers shown in Figs. 7- 10.
  • a roller or blade is carried back and forth over the build area to spread powdered build material in layers for fusing.
  • Airborne powder generated during the layering process can contaminate sensitive parts of an additive manufacturing machine.
  • powder can leak away from the build area along the lateral edges of the spreader.
  • a containment is provided for layering powdered build material in an additive manufacturing machine to help control the spread of airborne powder and to help reduce powder leakage along the lateral edges of the spreader.
  • a build material spreading apparatus for additive manufacturing includes a roller, blade or other movable spreader and a containment surrounding the spreader.
  • the containment surrounds the spreader everywhere except along the bottom of the spreader facing the build area where the spreader contacts the build material.
  • the containment helps control the spread of airborne powder by containing the powder to a region immediately adjacent to the spreader.
  • the containment is movable with the spreader to help contain airborne powder even as the spreader is carried back and forth over the build area.
  • a lateral part of the containment is configured to control the lateral extent of the layer of build material as it is spread over the build area.
  • This part of the containment may include, for example, a blocker flanking each side of the spreader to block build material spreading laterally away from the build area. Where a full containment is not desired, the blockers may be implemented independently to control build material leaking away from the build area.
  • examples are described below with reference to a powdered build material, examples of the containment are not limited to use with powdered build material. The examples described herein and shown in the figures illustrate but do not limit the scope of the patent, which is defined in the Claims following this Description.
  • build area means any suitable structural area to support build material for fusing, including underlying layers of both fused and unfused build material and in-process slice and other object structures.
  • Fig. 1 is an isometric view of a build material spreading apparatus 10 implementing one example of a containment 12.
  • Fig. 2 is an isometric view from the view angle of Fig. 1 with one panel of the containment removed to show parts of apparatus 10 inside containment 12.
  • Figs. 3 and 4 are isometric sections taken along the lines 3-3 in Fig. 1 and 4-4 in Fig. 2, respectively.
  • Fig. 5 is a side elevation section taken along the line 5-5 in Fig. 1 .
  • build material spreading apparatus 10 includes containment 12 surrounding a spreader 14.
  • the spreader is implemented as a roller 14.
  • Containment 12 and spreader roller 14 are movable together over a build area 16 to spread a build material 18.
  • Any suitable carriage and drive mechanism (not shown) may be used to move spreader roller 14 and containment 12.
  • build material 18 is depicted as a powdered build material.
  • build area 16 in the figures represents any suitable structural area to support build material for fusing, including underlying layers of both fused and unfused build material and in-process slice and other object structures.
  • build area 16 is formed over a platform 20 that moves up and down inside a container 22 to adjust for the thickness of each layer of build material 18.
  • a build area 16 for a first layer of build material 18 may be the surface of platform 20.
  • the build area 16 may be formed on the underlying layer (or layers) of build material, which may include fused and unfused build material.
  • Container 22 is truncated in Figs. 1 -2 along two sides of platform 20. Container 22 is omitted from Figs. 3 and 4.
  • Fig. 6 illustrates one example for the layout of an additive
  • a spreading apparatus 10 such as that shown in Figs. 1 -5.
  • an object 24 is manufactured on platform 20 in container 22.
  • spreader roller 14 is bi-directional, moving back and forth over platform 20 to spread build material 18 from supplies 26 on to a build area 16.
  • Platform 20 moves down inside container 22 as each succeeding layer of build material 18 is spread on build area 16 and fused into the corresponding object slice. Manufacturing proceeds layer by layer and slice by slice until object 24 is complete.
  • containment 12 surrounds roller 14 on five of six sides - the front, back, top, and sides - to contain build material 18 to a region near the spreader.
  • "Front" and “back” as used herein are not intended to suggest any particular direction of motion for roller 14.
  • roller 14 may be said to move forward and backward over the build area or forward in both directions with the front in one direction becoming the back in the other direction.
  • the bottom of roller 14 is open for spreading build material 18 over build area 16, as best seen in Figs 3-5.
  • Containment 12 includes a front wall 28 covering the front of roller 14, a back wall 30 covering the back of roller 14, a ceiling 32 covering the top of roller 14, and side walls 34, 36 covering the sides of roller 14.
  • Containment front wall 30 and back wall 32 act as curtains, extending down close to build area 16, to contain much of any powder that may become airborne in front of roller 14 and in back of roller 14 as the roller spreads build material 18 over build area 16.
  • back wall 30 and ceiling 32 are integral to one another, and with an expanded section for added strength to span of roller 14.
  • front wall 28 includes a window 38 to view roller 14 and the interior of containment 12. Front wall 28 may be removable separate from the other parts of containment 12 to facilitate access to roller 14. As best seen in Fig. 5, the upper parts of each side wall 34, 36 conforms generally to the interior of back wall 30 and ceiling 32. While the size and shape of containment 12 may vary for different additive manufacturing environments and operations, testing suggests that a powdered build material containment 12 that contains airborne powder to a region within about 25mm of spreader roller 14 will provide effective powder control and within a containment structure (e.g. walls 28-36) sufficiently compact and lightweight to move with roller 14 without adversely affecting the performance of the spreader.
  • a containment structure e.g. walls 28-36
  • Figs. 7 and 8 are isometric and plan views, respectively, illustrating sidewalls 34, 36 as build material blockers flanking spreader roller 14.
  • Fig. 9 is an isometric partial section taken along the line 9-9 in Fig. 8.
  • Fig. 10 is a detail from Fig. 8.
  • each blocker 34, 36 includes a leading part 35 that extends forward from roller 14 at least far enough to block a pile 40 of build material 18 pushed up in front the roller.
  • each blocker 34, 36 will also include a trailing part 37 that extends backward from roller 14.
  • which part 35, 37 is the leading part and which is the trailing part depends on the direction of motion of roller 14, which is from right to left in the figures.
  • Each blocker 34, 36 is located laterally inside the perimeter of container 22 and over platform 20.
  • blockers 34, 36 may be a static device.
  • blockers 34, 36 in Figs. 7-10 are stationary with respect to roller 14 and stationary laterally with respect to platform 20 and container 22.
  • each blocker 34, 36 is oriented vertically inside the edge of platform 20. Other orientations are possible, for example to control or vary the edge profile of build material 18.
  • roller 14 extends outboard through an opening 42 in each blocker 34, 36.
  • an upper extent 44 of each blocker 34, 36 at least partially surrounds roller 14 and a lower extent 46 protrudes below roller 14.
  • each blocker 34, 36 is part of a mounting assembly 48 that includes a U-shaped bracket 50 and a spring 52.
  • the outboard part 54 of bracket 50 is mounted to the carriage, allowing a cantilevered blocker 34, 36 at the inboard part of bracket 50 to be suspended over platform 20, and in this example encircling roller 14 without bearing on roller 14.
  • the top 32 of containment 12 presses a tab 53 on spring 52, as best seen in Figs. 4 and 5, to bias bracket 50 and thus blockers 34, 36 into the desired position against a datum 55 (Fig. 5) at the inside of the back 30 of containment 12.
  • each blockers 34, 36 may protrude slightly below roller 14 if desired to help control the edge profile of build material 18 as it is spread over build area 16.
  • the edge 56 of a layer 58 of a powdered build material 18 tends to collapse into the free space below the blocker outboard toward the wall of container 22.
  • the thickness of layer 58 corresponds to a gap 60 between the bottom of roller 14 and build area 16.
  • the lower extent 46 and position of blockers 34, 36 inside the perimeter of container 22 helps control the slope of the collapsing powder along edge 56 to inhibit leakage but without impeding the spreading operation.

Landscapes

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

Abstract

La présente invention concerne un appareil d'étalement de matériau de construction pour la fabrication additive. Ledit appareil comprend, dans un exemple, un dispositif d'étalement mobile pour étaler un matériau de construction sur une zone de construction, le dispositif d'étalement possédant un haut, un bas, un avant et un arrière, et un couvercle mobile conjointement avec le dispositif d'étalement qui couvre l'avant, le haut et l'arrière du dispositif d'étalement.
PCT/US2016/032066 2016-05-12 2016-05-12 Appareils d'étalement de matériau de construction pour fabrication additive Ceased WO2017196337A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2016/032066 WO2017196337A1 (fr) 2016-05-12 2016-05-12 Appareils d'étalement de matériau de construction pour fabrication additive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2016/032066 WO2017196337A1 (fr) 2016-05-12 2016-05-12 Appareils d'étalement de matériau de construction pour fabrication additive

Publications (1)

Publication Number Publication Date
WO2017196337A1 true WO2017196337A1 (fr) 2017-11-16

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PCT/US2016/032066 Ceased WO2017196337A1 (fr) 2016-05-12 2016-05-12 Appareils d'étalement de matériau de construction pour fabrication additive

Country Status (1)

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WO (1) WO2017196337A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019139594A1 (fr) * 2018-01-11 2019-07-18 Hewlett-Packard Development Company, L.P. Épandeuses de matériau de construction
WO2020237142A1 (fr) * 2019-05-23 2020-11-26 General Electric Company Ensembles de recouvrement de fabrication additive comprenant un vide et leurs procédés d'utilisation
CN117428211A (zh) * 2022-07-20 2024-01-23 通用电气公司 用于增材制造系统的重涂组件及其使用方法
US12042988B2 (en) 2019-05-23 2024-07-23 General Electric Company Additive manufacturing apparatuses and methods
US12059841B2 (en) 2019-05-23 2024-08-13 General Electric Company Additive manufacturing recoat assemblies including sensors and methods for using the same
US12076918B2 (en) 2019-05-23 2024-09-03 General Electric Company Additive manufacturing apparatuses and methods for using the same
US12097709B2 (en) 2019-05-23 2024-09-24 General Electric Company Cleaning fluids for use in additive manufacturing apparatuses and methods for monitoring status and performance of the same
US12172370B2 (en) 2019-05-23 2024-12-24 General Electric Company Recoat assemblies for additive manufacturing systems and methods for using the same
US12208583B2 (en) 2019-05-23 2025-01-28 General Electric Company Wiper arrays for use in additive manufacturing apparatuses
US12233643B2 (en) 2019-05-23 2025-02-25 General Electric Company Printing assemblies and methods for using the same
US12280596B2 (en) 2019-05-23 2025-04-22 General Electric Company Cleaning systems for additive manufacturing apparatuses and methods for using the same
US12358227B2 (en) 2019-05-23 2025-07-15 General Electric Company Fluid management and circulation systems for use in additive manufacturing apparatuses
US12617148B2 (en) 2020-05-22 2026-05-05 General Electric Company Actuator assemblies for additive manufacturing apparatuses and methods for using the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5934343A (en) * 1997-03-31 1999-08-10 Therics, Inc Method for dispensing of powders
EP0949993B1 (fr) * 1996-12-20 2002-11-06 Z Corporation Dispositif pour la fabrication d'un objet tridimensionnel et procede d'assemblage d'un dispositif pour la fabrication d'un objet tridimensionnel
US20050225007A1 (en) * 2004-04-08 2005-10-13 Wei-Hsian Lai Method and apparatus for rapid prototyping using computer-printer aided to object realization
US20050263934A1 (en) * 2004-05-28 2005-12-01 3D Systems, Inc. Single side feed parked powder wave heating with wave flattener
WO2012111382A1 (fr) * 2011-02-16 2012-08-23 ブラザー工業株式会社 Appareil de façonnage en trois dimensions

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0949993B1 (fr) * 1996-12-20 2002-11-06 Z Corporation Dispositif pour la fabrication d'un objet tridimensionnel et procede d'assemblage d'un dispositif pour la fabrication d'un objet tridimensionnel
US5934343A (en) * 1997-03-31 1999-08-10 Therics, Inc Method for dispensing of powders
US20050225007A1 (en) * 2004-04-08 2005-10-13 Wei-Hsian Lai Method and apparatus for rapid prototyping using computer-printer aided to object realization
US20050263934A1 (en) * 2004-05-28 2005-12-01 3D Systems, Inc. Single side feed parked powder wave heating with wave flattener
WO2012111382A1 (fr) * 2011-02-16 2012-08-23 ブラザー工業株式会社 Appareil de façonnage en trois dimensions

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11241830B2 (en) 2018-01-11 2022-02-08 Hewlett-Packard Development Company, L.P. Build material spreaders
WO2019139594A1 (fr) * 2018-01-11 2019-07-18 Hewlett-Packard Development Company, L.P. Épandeuses de matériau de construction
US12233643B2 (en) 2019-05-23 2025-02-25 General Electric Company Printing assemblies and methods for using the same
WO2020237142A1 (fr) * 2019-05-23 2020-11-26 General Electric Company Ensembles de recouvrement de fabrication additive comprenant un vide et leurs procédés d'utilisation
US12377605B2 (en) 2019-05-23 2025-08-05 General Electric Company Additive manufacturing apparatuses and methods
US12042988B2 (en) 2019-05-23 2024-07-23 General Electric Company Additive manufacturing apparatuses and methods
US12059841B2 (en) 2019-05-23 2024-08-13 General Electric Company Additive manufacturing recoat assemblies including sensors and methods for using the same
US12076918B2 (en) 2019-05-23 2024-09-03 General Electric Company Additive manufacturing apparatuses and methods for using the same
US12097709B2 (en) 2019-05-23 2024-09-24 General Electric Company Cleaning fluids for use in additive manufacturing apparatuses and methods for monitoring status and performance of the same
US12358227B2 (en) 2019-05-23 2025-07-15 General Electric Company Fluid management and circulation systems for use in additive manufacturing apparatuses
US12172370B2 (en) 2019-05-23 2024-12-24 General Electric Company Recoat assemblies for additive manufacturing systems and methods for using the same
US12208583B2 (en) 2019-05-23 2025-01-28 General Electric Company Wiper arrays for use in additive manufacturing apparatuses
US12280596B2 (en) 2019-05-23 2025-04-22 General Electric Company Cleaning systems for additive manufacturing apparatuses and methods for using the same
US12257778B2 (en) 2019-05-23 2025-03-25 General Electric Company Additive manufacturing recoat assemblies including a vacuum and methods for using the same
US12617148B2 (en) 2020-05-22 2026-05-05 General Electric Company Actuator assemblies for additive manufacturing apparatuses and methods for using the same
CN117428211A (zh) * 2022-07-20 2024-01-23 通用电气公司 用于增材制造系统的重涂组件及其使用方法
CN117428211B (zh) * 2022-07-20 2024-10-18 通用电气公司 用于增材制造系统的重涂组件及其使用方法
EP4311613A1 (fr) * 2022-07-20 2024-01-31 General Electric Company Ensembles de revêtement pour systèmes de fabrication additive et leurs procédés d'utilisation

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