WO2020069167A1 - Removable build platform for an additive manufacturing apparatus - Google Patents
Removable build platform for an additive manufacturing apparatus Download PDFInfo
- Publication number
- WO2020069167A1 WO2020069167A1 PCT/US2019/053213 US2019053213W WO2020069167A1 WO 2020069167 A1 WO2020069167 A1 WO 2020069167A1 US 2019053213 W US2019053213 W US 2019053213W WO 2020069167 A1 WO2020069167 A1 WO 2020069167A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- build platform
- build
- platform
- pins
- stereolithography
- Prior art date
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
- B29C64/10—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
- B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
-
- 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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Definitions
- the present invention concerns additive manufacturing in general, and particularly concerns high throughput systems employing streolithography-type additive manufacturing.
- a group of additive manufacturing techniques sometimes referred to as "stereolithography” create a three-dimensional object by the sequential polymerization of a light polymerizable resin.
- Such techniques include “bottom-up” techniques, where light is projected into the resin through a light-transmissive“window” onto the bottom of the growing object, which object is carried up and out of the resin pool on a“build platform.”
- a removable build platform for a bottom-up stereolithography apparatus includes (a) a body having a top portion, a bottom portion, a front portion, a back portion, and opposite side portions, said bottom portion having a build surface on which objects can be produced by stereolithography; (b) a plurality of clamp draw-in pins connected to said body top portion and extending upward therefrom; and (c) a lifting slot formed in each of said side portions, with said lifting slots parallel to and aligned with one another.
- the build surface is rectangular.
- the build surface may have at least one elongate slot formed therein to facilitate the flow of polymerizable resin beneath the build surface during additive manufacturing of at least one object thereon),
- the lifting slots extend through said body back portion.
- the lifting slots are internal and face one another.
- the plurality of clamp draw-in pins comprise four draw-in pins.
- the build platform further comprises (d) an outward facing handle connected to each of said side portions.
- the body has a unique identifier (e.g., an NFC tag) connected thereto.
- a unique identifier e.g., an NFC tag
- the build surface is substantially planar.
- the top portion has a plurality of weight-reducing hollows formed therein.
- FIG. 1 is a bottom perspective view of a platform according to some embodiments.
- FIG. 2 is a back view of the platform of FIG. 1;
- FIG. 3 is a front view of the platform of FIG. 1;
- FIG. 4 is a side view of the platform of FIG. 1;
- FIG. 5 is a bottom view of the platform of FIG. 1;
- FIG. 6 is an top view of the platform of FIG. 1. DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS
- spatially relative terms such as“under,”“below,”“lower,”“over,”“upper” and the like, may be used herein for ease of description to describe an element’s or feature’s relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, elements described as“under” or“beneath” other elements or features would then be oriented“over” the other elements or features. Thus the exemplary term“under” can encompass both an orientation of over and under.
- the device may otherwise be oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
- the terms“upwardly,” “downwardly,” “vertical,”“horizontal” and the like are used herein for the purpose of explanation only, unless specifically indicated otherwise.
- Example dual cure resins include, but are not limited to, Carbon Inc. EPU 40, EPU 41, FPU, RPU 70, SIL 30, and EPX 82 resins, all available from Carbon Inc. 1089 Mills Way, Redwood City, CA 94063 USA.
- Apparatus and methods for carrying out additive manufacturing are known. Suitable techniques include bottom-up or top-down additive manufacturing, generally known as stereolithography. Such methods are known and described in, for example, U.S. Patent No. 5,236,637 to Hull, US Patent Nos. 5,391,072 and 5,529,473 to Lawton, U.S. Patent No. 7,438,846 to John, US Patent No. 7,892,474 to Shkolnik, U.S. Patent No. 8,110,135 to El- Siblani, U.S. Patent Application Publication No. 2013/0292862 to Joyce, and US Patent Application Publication No. 2013/0295212 to Chen et al. The disclosures of these patents and applications are incorporated by reference herein in their entirety.
- the intermediate object is formed by continuous liquid interface production (CLIP).
- CLIP is known and described in, for example, US Patent No. 9,211,678, US Patent No. 9,205,601, US Patent No 9,216,546, and in J. Tumbleston, D. Shirvanyants, N. Ermoshkin et al., Continuous liquid interface production of 3D Objects, Science 347, 1349-1352 (published online 16 March 2015). See also R. Janusziewcz et al., Layerless fabrication with continuous liquid interface production, Proc. Natl. Acad. Sci. USA 113, 11703-11708 (October 18, 2016).
- CLIP employs features of a bottom-up three-dimensional fabrication as described above, but the irradiating and/or said advancing steps are carried out while also concurrently maintaining a stable or persistent liquid interface between the growing object and the build surface or window, such as by: (i) continuously maintaining a dead zone of polymerizable liquid in contact with said build surface, and (ii) continuously maintaining a gradient of polymerization zone (such as an active surface) between the dead zone and the solid polymer and in contact with each thereof, the gradient of polymerization zone comprising the first component in partially cured form.
- a gradient of polymerization zone such as an active surface
- the optically transparent member comprises a semipermeable member (e.g., a fluoropolymer), and the continuously maintaining a dead zone is carried out by feeding an inhibitor of polymerization through the optically transparent member, thereby creating a gradient of inhibitor in the dead zone and optionally in at least a portion of the gradient of polymerization zone.
- a semipermeable member e.g., a fluoropolymer
- Other approaches for carrying out CLIP that can be used in the present invention and potentially obviate the need for a semipermeable "window" or window structure include utilizing a liquid interface comprising an immiscible liquid ( see L.
- the additive manufacturing apparatus is a bottom-up stereolithography apparatus (including but not limited to apparatus carrying out CLIP), employing a removable window cassette, such as described in B. Feller et al., Three- dimensional printing with build plates having reduced pressure and/or channels for increased fluid flow, PCT Patent Application Pub. No. WO 2018/006029, or B. Feller et al., Three-dimensional printing method and apparatus for reducing bubbles by de-gassing through build plate, PCT Patent Application Pub. No. WO 2018/006018 (where“build plate” refers to the“window cassette”).
- a removable build platform 100 for a bottom-up stereolithography apparatus includes a body 110 having a top portion 120, a bottom portion 130, a front portion 140, a back portion 150, and opposite side portions 160.
- the bottom portion 130 includes a build surface 132 on which objects can be produced by stereolithography.
- the build platform 100 includes a plurality of clamp draw-in pins 122 connected to the body top portion 120 and extending upward therefrom.
- a lifting slot 162 is formed in each of the side portions 160 such that the lifting slots 162 are parallel to and aligned with one another.
- the claim draw-in pins 122 may be used to removably secure the removable build platform 100 in position on a stereolithography apparatus.
- the stereolithography apparatus may include a mounting plate configured to receive the clamp draw-in pins 122 for mounting the build platform 100 thereto.
- the build platform 100 further includes an outward facing handle 166 connected to each of said side portions 160.
- the lifting slots 162 extend through the body back portion 150 to define an opening 164, and the lifting slots 162 are internal and face one another.
- a lifter for example, having parallel extending arms that cooperate with the lifting slots 162, may be used to move the platform 100 by inserting lifting arms through the openings 164 and engaging with the lifting slots 162.
- Build platforms according to some embodiments can be more rapidly exchanged in a bottom-up additive manufacturing apparatus by using the lifting slots 162.
- the lifter may be a robotic lifter that provides automated placement/mounting and/or removal of the platform 100 in a stereolithography apparatus.
- a manual lifter may also be used to manually place or mount the platform 100 and/or remove the platform 100 from a stereolithography apparatus.
- the plurality of clamp draw-in pins 122 comprise four draw-in pins; however, it should be understood that any suitable number of draw-in pins 122 may be used (more or less than four).
- the clam draw-in pins 122 may be used to secure the platform lOOin a stereolithography apparatus by affixing the build platform to a corresponding mounting plate.
- mating receptacles may be provided on the stereolithography apparatus, such as on a mounting plate, to receive the clamp draw-in pins 122 of the platform 100 in a particular orientation and to secure the platform 100 at a desired alignment with respect to the stereolithography apparatus.
- the mounting plate may be configured to move the build platform 100 away from a corresponding build surface of a build window during the formation of a three-dimensional object, e.g., to move the object affixed to the build platform 100 away from the corresponding build surface of the build window.
- the clamp draw- in pins 122 may be used to securely affix the build platform 100 to the stereolithography apparatus at a desired orientation.
- clam draw-in pins 122 may be used to remove the platform 100 from a stereolithography apparatus after use.
- Clamp draw-in pins also referred to as clamping pins, draw-in bolts, and pull-in nipples
- clamping pins also referred to as clamping pins, draw-in bolts, and pull-in nipples
- clamping mechanisms are known and described in, for example, US Patents Nos. 8,066,289; 6,283,465; and 5,961,261.
- the clamp and associated draw-in pins are VERO-S NSE mini quick-change pallet system components, available from Schunk Intec Inc., 211 Kitty Hawk Drive, Morrisville, NC 27560 USA.
- the build surface 132 is rectangular.
- the build surface 132 may be substantially planar and have at least one elongate slot 134 formed therein to facilitate the flow of polymerizable resin beneath the build surface 132 during additive manufacturing of at least one object thereon.
- the body 110 has a unique identifier (e.g., an NFC tag) connected thereto.
- the platform 100 may be identified by a tag reader, for example, for tracking the usage of the platform 100 or identifying a type of platform or platform history in the stereolithography apparatus.
- the top portion 120 has a plurality of weight-reducing hollows 124 formed therein.
- the weight-reducing hollows 124 are separated by brackets 126 for increased strength and stability
Abstract
A removable build platform (100) for a bottom-up stereolithography apparatus includes (a) a body (110) having a top portion (120), a bottom portion (130), a front portion (140), a back portion (150), and opposite side portions (160), said bottom portion (130) having a build surface (132) on which objects can be produced by stereolithography; (b) a plurality of clamp draw-in pins (122) connected to said body top portion (120) and extending upward therefrom; and (c) a lifting slot formed in each of said side portions (160), with said lifting slots (162) parallel to and aligned with one another.
Description
REMOVABLE BUILD PLATFORM FOR AN ADDITIVE MANUFACTURING
APPARATUS
RELATED APPLICATIONS
[0001] This applications claims priority to U.S. Provisional Application Serial No. 62/738,056, filed September 28, 2018, the disclosure of which is hereby incorporated by reference in its entirety.
FIELD OF THE INVENTION
[0002] The present invention concerns additive manufacturing in general, and particularly concerns high throughput systems employing streolithography-type additive manufacturing.
BACKGROUND
[0003] A group of additive manufacturing techniques sometimes referred to as "stereolithography" create a three-dimensional object by the sequential polymerization of a light polymerizable resin. Such techniques include "bottom-up" techniques, where light is projected into the resin through a light-transmissive“window” onto the bottom of the growing object, which object is carried up and out of the resin pool on a“build platform.”
[0004] The recent introduction of a more rapid stereolithography technique sometimes referred to as continuous liquid interface production (CLIP) has expanded the usefulness of stereolithography from prototyping to manufacturing. See J. Tumbleston, D. Shirvanyants, N. Ermoshkin et al., Continuous liquid interface production of 3D objects , SCIENCE 347, 1349- 1352 (published online 16 March 2015); US Patent Nos. 9,211,678; 9,205,601; and 9,216,546 to DeSimone et al.; see also R. Janusziewicz, et al., Layerless fabrication with continuous liquid interface production, PNAS 113, 11703-11708 (18 Oct. 2016).
[0005] Dual cure resins for additive manufacturing were introduced shortly after the introduction of CLIP, expanding the usefulness of stereolithography for manufacturing a broad variety of objects still further. See Rolland et al., US Patent Nos. 9,676,963, 9,453,142 and 9,598,606; J. Poelma and J. Rolland, Rethinking digital manufacturing with polymers, SCIENCE 358, 1384-1385 (15 Dec. 2017).
[0006] The foregoing developments have in turn lead to a need for build platforms that can be more rapidly exchanged in bottom-up additive manufacturing apparatus, while maintaining good alignment, so that greater numbers of objects can be produced on the apparatus.
SUMMARY
[0007] In some embodiments, a removable build platform for a bottom-up stereolithography apparatus includes (a) a body having a top portion, a bottom portion, a front portion, a back portion, and opposite side portions, said bottom portion having a build surface on which objects can be produced by stereolithography; (b) a plurality of clamp draw-in pins connected to said body top portion and extending upward therefrom; and (c) a lifting slot formed in each of said side portions, with said lifting slots parallel to and aligned with one another.
[0008] In some embodiments, the build surface is rectangular. The build surface may have at least one elongate slot formed therein to facilitate the flow of polymerizable resin beneath the build surface during additive manufacturing of at least one object thereon),
[0009] In some embodiments, the lifting slots extend through said body back portion.
[0010] In some embodiments, the lifting slots are internal and face one another.
[0011] In some embodiments, the plurality of clamp draw-in pins comprise four draw-in pins.
[0012] In some embodiments, the build platform further comprises (d) an outward facing handle connected to each of said side portions.
[0013] In some embodiments, the body has a unique identifier (e.g., an NFC tag) connected thereto.
[0014] In some embodiments, the build surface is substantially planar.
[0015] In some embodiments, the top portion has a plurality of weight-reducing hollows formed therein.
[0016] The foregoing and other objects and aspects of the present invention are explained in greater detail in the drawings herein and the specification set forth below. The disclosures of all United States patent references cited herein are to be incorporated herein by reference.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] FIG. 1 is a bottom perspective view of a platform according to some embodiments;
[0018] FIG. 2 is a back view of the platform of FIG. 1;
[0019] FIG. 3 is a front view of the platform of FIG. 1;
[0020] FIG. 4 is a side view of the platform of FIG. 1;
[0021] FIG. 5 is a bottom view of the platform of FIG. 1; and
[0022] FIG. 6 is an top view of the platform of FIG. 1.
DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS
[0023] The present invention is now described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those skilled in the art.
[0024] Like numbers refer to like elements throughout. In the figures, the thickness of certain lines, layers, components, elements or features may be exaggerated for clarity. Where used, broken lines illustrate optional features or operations unless specified otherwise.
[0025] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a,”“an” and“the” are intended to include plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms“comprises” or“comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements components and/or groups or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups or combinations thereof.
[0026] As used herein, the term“and/or” includes any and all possible combinations or one or more of the associated listed items, as well as the lack of combinations when interpreted in the alternative ("or").
[0027] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be farther understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the specification and claims and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein. Well- known functions or constructions may not be described in detail for brevity and/or clarity.
[0028] It will be understood that when an element is referred to as being“on,”“attached” to, “connected” to,“coupled” with,“contacting,” etc., another element, it can be directly on, attached to, connected to, coupled with and/or contacting the other element or intervening elements can also be present. In contrast, when an element is referred to as being, for example,“directly on,”“directly attached” to,“directly connected” to,“directly coupled”
with or“directly contacting” another element, there are no intervening elements present. It will also be appreciated by those of skill in the art that references to a structure or feature that is disposed“adjacent” another feature can have portions that overlap or underlie the adjacent feature.
[0029] Spatially relative terms, such as“under,”“below,”“lower,”“over,”“upper” and the like, may be used herein for ease of description to describe an element’s or feature’s relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, elements described as“under” or“beneath” other elements or features would then be oriented“over” the other elements or features. Thus the exemplary term“under” can encompass both an orientation of over and under. The device may otherwise be oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Similarly, the terms“upwardly,” “downwardly,” “vertical,”“horizontal” and the like are used herein for the purpose of explanation only, unless specifically indicated otherwise.
[0030] It will be understood that, although the terms first, second, etc., may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer and/or section, from another element, component, region, layer and/or section. Thus, a first element, component, region, layer or section discussed herein could be termed a second element, component, region, layer or section without departing from the teachings of the present invention. The sequence of operations (or steps) is not limited to the order presented in the claims or figures unless specifically indicated otherwise.
[0031] 1. ADDITIVE MANUFACTURING APPARATUS.
[0032] Conventional (or“single cure”) resins, or dual cure resins, can be used in carrying out aspects of the present invention. Examples include but are not limited to those described in DeSimone et ah, US Patent No. 9,211,678; in Rolland et ah, US Patent No. 9,676,963; 9,598,606; and 9,453,142, and in Wu et al., US Patent Application Pub. No. US2017/0260418, the disclosures of which are incorporated herein by reference. Example dual cure resins include, but are not limited to, Carbon Inc. EPU 40, EPU 41, FPU, RPU 70, SIL 30, and EPX 82 resins, all available from Carbon Inc. 1089 Mills Way, Redwood City,
CA 94063 USA.
[0033] Apparatus and methods for carrying out additive manufacturing are known. Suitable techniques include bottom-up or top-down additive manufacturing, generally known as stereolithography. Such methods are known and described in, for example, U.S. Patent No. 5,236,637 to Hull, US Patent Nos. 5,391,072 and 5,529,473 to Lawton, U.S. Patent No. 7,438,846 to John, US Patent No. 7,892,474 to Shkolnik, U.S. Patent No. 8,110,135 to El- Siblani, U.S. Patent Application Publication No. 2013/0292862 to Joyce, and US Patent Application Publication No. 2013/0295212 to Chen et al. The disclosures of these patents and applications are incorporated by reference herein in their entirety.
[0034] In some embodiments, the intermediate object is formed by continuous liquid interface production (CLIP). CLIP is known and described in, for example, US Patent No. 9,211,678, US Patent No. 9,205,601, US Patent No 9,216,546, and in J. Tumbleston, D. Shirvanyants, N. Ermoshkin et al., Continuous liquid interface production of 3D Objects, Science 347, 1349-1352 (published online 16 March 2015). See also R. Janusziewcz et al., Layerless fabrication with continuous liquid interface production, Proc. Natl. Acad. Sci. USA 113, 11703-11708 (October 18, 2016). In some embodiments, CLIP employs features of a bottom-up three-dimensional fabrication as described above, but the irradiating and/or said advancing steps are carried out while also concurrently maintaining a stable or persistent liquid interface between the growing object and the build surface or window, such as by: (i) continuously maintaining a dead zone of polymerizable liquid in contact with said build surface, and (ii) continuously maintaining a gradient of polymerization zone (such as an active surface) between the dead zone and the solid polymer and in contact with each thereof, the gradient of polymerization zone comprising the first component in partially cured form. In some embodiments of CLIP, the optically transparent member comprises a semipermeable member (e.g., a fluoropolymer), and the continuously maintaining a dead zone is carried out by feeding an inhibitor of polymerization through the optically transparent member, thereby creating a gradient of inhibitor in the dead zone and optionally in at least a portion of the gradient of polymerization zone. Other approaches for carrying out CLIP that can be used in the present invention and potentially obviate the need for a semipermeable "window" or window structure include utilizing a liquid interface comprising an immiscible liquid ( see L. Robeson et al., WO 2015/164234, published October 29, 2015), generating oxygen as an inhibitor by electrolysis (see I Craven et al., WO 2016/133759, published August 25, 2016), and incorporating magnetically positionable particles to which the photo activator is coupled
into the polymerizable liquid ( ee J. Rolland, WO 2016/145182, published September 15, 2016).
[0035] In preferred embodiments, the additive manufacturing apparatus is a bottom-up stereolithography apparatus (including but not limited to apparatus carrying out CLIP), employing a removable window cassette, such as described in B. Feller et al., Three- dimensional printing with build plates having reduced pressure and/or channels for increased fluid flow, PCT Patent Application Pub. No. WO 2018/006029, or B. Feller et al., Three-dimensional printing method and apparatus for reducing bubbles by de-gassing through build plate, PCT Patent Application Pub. No. WO 2018/006018 (where“build plate” refers to the“window cassette”).
[0036] 2. BUILD PLATFORM
[0037] As shown in FIGS. 1-6, a removable build platform 100 for a bottom-up stereolithography apparatus includes a body 110 having a top portion 120, a bottom portion 130, a front portion 140, a back portion 150, and opposite side portions 160. The bottom portion 130 includes a build surface 132 on which objects can be produced by stereolithography. The build platform 100 includes a plurality of clamp draw-in pins 122 connected to the body top portion 120 and extending upward therefrom. A lifting slot 162 is formed in each of the side portions 160 such that the lifting slots 162 are parallel to and aligned with one another.
[0038] In this configuration, the claim draw-in pins 122 may be used to removably secure the removable build platform 100 in position on a stereolithography apparatus. The stereolithography apparatus may include a mounting plate configured to receive the clamp draw-in pins 122 for mounting the build platform 100 thereto.
[0039] As illustrated, the build platform 100 further includes an outward facing handle 166 connected to each of said side portions 160. The lifting slots 162 extend through the body back portion 150 to define an opening 164, and the lifting slots 162 are internal and face one another. Thus, a lifter, for example, having parallel extending arms that cooperate with the lifting slots 162, may be used to move the platform 100 by inserting lifting arms through the openings 164 and engaging with the lifting slots 162. Build platforms according to some embodiments can be more rapidly exchanged in a bottom-up additive manufacturing apparatus by using the lifting slots 162. In some embodiments, the lifter may be a robotic lifter that provides automated placement/mounting and/or removal of the platform 100 in a stereolithography apparatus. However, a manual lifter may also be used to manually place or
mount the platform 100 and/or remove the platform 100 from a stereolithography apparatus.
[0040] In some embodiments, the plurality of clamp draw-in pins 122 comprise four draw-in pins; however, it should be understood that any suitable number of draw-in pins 122 may be used (more or less than four). The clam draw-in pins 122 may be used to secure the platform lOOin a stereolithography apparatus by affixing the build platform to a corresponding mounting plate. For example, mating receptacles may be provided on the stereolithography apparatus, such as on a mounting plate, to receive the clamp draw-in pins 122 of the platform 100 in a particular orientation and to secure the platform 100 at a desired alignment with respect to the stereolithography apparatus. The mounting plate may be configured to move the build platform 100 away from a corresponding build surface of a build window during the formation of a three-dimensional object, e.g., to move the object affixed to the build platform 100 away from the corresponding build surface of the build window. Thus, the clamp draw- in pins 122 may be used to securely affix the build platform 100 to the stereolithography apparatus at a desired orientation. In addition, clam draw-in pins 122 may be used to remove the platform 100 from a stereolithography apparatus after use.
[0041] Clamp draw-in pins (also referred to as clamping pins, draw-in bolts, and pull-in nipples), and their associated clamping mechanisms, are known and described in, for example, US Patents Nos. 8,066,289; 6,283,465; and 5,961,261. In preferred embodiments, the clamp and associated draw-in pins are VERO-S NSE mini quick-change pallet system components, available from Schunk Intec Inc., 211 Kitty Hawk Drive, Morrisville, NC 27560 USA.
[0042] In some embodiments, the build surface 132 is rectangular. The build surface 132 may be substantially planar and have at least one elongate slot 134 formed therein to facilitate the flow of polymerizable resin beneath the build surface 132 during additive manufacturing of at least one object thereon.
[0043] In some embodiments, the body 110 has a unique identifier (e.g., an NFC tag) connected thereto. Accordingly, the platform 100 may be identified by a tag reader, for example, for tracking the usage of the platform 100 or identifying a type of platform or platform history in the stereolithography apparatus.
[0044] In some embodiments, the top portion 120 has a plurality of weight-reducing hollows 124 formed therein. The weight-reducing hollows 124 are separated by brackets 126 for increased strength and stability
[0045] The foregoing is illustrative of the present invention, and is not to be construed as
limiting thereof. The invention is defined by the following claims, with equivalents of the claims to be included therein.
Claims
1. A removable build platform for a bottom-up stereolithography apparatus, comprising:
(a) a body having a top portion, a bottom portion, a front portion, a back portion, and opposite side portions, said bottom portion having a build surface on which objects can be produced by stereolithography;
(b) a plurality of clamp draw-in pins connected to said body top portion and extending upward therefrom; and
(c) a lifting slot formed in each of said side portions, with said lifting slots parallel to and aligned with one another.
2. The build platform of claim 1, wherein said build surface is rectangular.
3. The build platform of claim 2, wherein said build surface has at least one elongate slot formed therein to facilitate the flow of polymerizable resin beneath the build surface during additive manufacturing of at least one object thereon.
4. The build platform of claim 1, wherein said lifting slots extend through said body back portion.
5. The build platform of claim 1, wherein said lifting slots are internal and face one another.
6. The build platform of any preceding claim, wherein said plurality of clamp draw-in pins comprise four draw-in pins.
7. The build platform of claim 1, further comprising:
(d) an outward facing handle connected to each of said side portions.
8. The build platform of any preceding claim, said body having a unique identifier (e.g., an NFC tag) connected thereto.
9. The build platform of any preceding claim, wherein said top portion has a plurality of weight-reducing hollows formed therein.
10. The build platform of claim 9, wherein said build surface is substantially planar.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201990001030.0U CN216579226U (en) | 2018-09-28 | 2019-09-26 | Removable build platform for additive manufacturing apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201862738056P | 2018-09-28 | 2018-09-28 | |
US62/738,056 | 2018-09-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020069167A1 true WO2020069167A1 (en) | 2020-04-02 |
Family
ID=68165886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2019/053213 WO2020069167A1 (en) | 2018-09-28 | 2019-09-26 | Removable build platform for an additive manufacturing apparatus |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN216579226U (en) |
WO (1) | WO2020069167A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021221900A1 (en) | 2020-04-30 | 2021-11-04 | Carbon, Inc. | Film remover apparatus for additive manufacturing build platforms and related methods |
WO2021221877A1 (en) | 2020-04-30 | 2021-11-04 | Carbon, Inc. | Film applicator apparatus for additive manufacturing build platforms and related systems |
WO2021222086A1 (en) | 2020-04-28 | 2021-11-04 | Carbon, Inc. | Methods of making a three-dimensional object |
WO2022260921A1 (en) | 2021-06-09 | 2022-12-15 | Carbon, Inc. | Systems and methods for making polymer dental appliances |
WO2023205716A1 (en) | 2022-04-22 | 2023-10-26 | Carbon, Inc. | Hollow dental molds configured for high throughput cleaning |
Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5236637A (en) | 1984-08-08 | 1993-08-17 | 3D Systems, Inc. | Method of and apparatus for production of three dimensional objects by stereolithography |
US5391072A (en) | 1990-10-29 | 1995-02-21 | E. I. Du Pont De Nemours And Company | Solid imaging apparatus having a semi-permeable film |
US5529473A (en) | 1990-07-05 | 1996-06-25 | E. I. Du Pont De Nemours And Company | Solid imaging system using differential tension elastomerc film |
US5961261A (en) | 1996-09-09 | 1999-10-05 | Stark; Emil | Clamping cylinder for pulling in a pull-in nipple, a respective pull-in nipple and a clamp system, for use with flying chips |
US6283465B1 (en) | 1999-01-20 | 2001-09-04 | Vischer & Bolli Ag | Clamping device |
US7438846B2 (en) | 2001-04-23 | 2008-10-21 | Envisiontec Gmbh | Apparatus and method for the non-destructive separation of hardened material layers from a flat construction plane |
US7892474B2 (en) | 2006-11-15 | 2011-02-22 | Envisiontec Gmbh | Continuous generative process for producing a three-dimensional object |
US8066289B2 (en) | 2005-03-31 | 2011-11-29 | Schunk Gmbh & Co. Kg Spann-Und Greiftechnik | Rapid clamping system |
US8110135B2 (en) | 2007-10-26 | 2012-02-07 | Envisiontec Gmbh | Process and freeform fabrication system for producing a three-dimensional object |
US20130292862A1 (en) | 2012-05-03 | 2013-11-07 | B9Creations, LLC | Solid Image Apparatus With Improved Part Separation From The Image Plate |
US20130295212A1 (en) | 2012-04-27 | 2013-11-07 | University Of Southern California | Digital mask-image-projection-based additive manufacturing that applies shearing force to detach each added layer |
WO2015164234A1 (en) | 2014-04-25 | 2015-10-29 | Carbon3D, Inc. | Continuous three dimensional fabrication from immiscible liquids |
US9205601B2 (en) | 2013-02-12 | 2015-12-08 | Carbon3D, Inc. | Continuous liquid interphase printing |
WO2016133759A1 (en) | 2015-02-20 | 2016-08-25 | Carbon3D, Inc. | Methods and apparatus for continuous liquid interface printing with electrochemically supported dead zone |
WO2016145182A1 (en) | 2015-03-12 | 2016-09-15 | Carbon3D, Inc. | Additive manufacturing using polymerization initiators or inhibitors having controlled migration |
US9453142B2 (en) | 2014-06-23 | 2016-09-27 | Carbon3D, Inc. | Polyurethane resins having multiple mechanisms of hardening for use in producing three-dimensional objects |
US20170173881A1 (en) * | 2015-12-22 | 2017-06-22 | Carbon, Inc. | Three-Dimensional Printing Using Selectively Lockable Carriers |
US20170260418A1 (en) | 2016-03-08 | 2017-09-14 | 3D Systems, Incorporated | Non-Isocyanate Polyurethane Inks for 3D Printing |
US20170291804A1 (en) * | 2016-04-12 | 2017-10-12 | General Electric Company | Rotatable engagement of additive manufacturing build plate |
WO2018006018A1 (en) | 2016-07-01 | 2018-01-04 | Carbon, Inc. | Three-dimensional printing method and apparatus for reducing bubbles by de-gassing through build plate |
-
2019
- 2019-09-26 WO PCT/US2019/053213 patent/WO2020069167A1/en active Application Filing
- 2019-09-26 CN CN201990001030.0U patent/CN216579226U/en active Active
Patent Citations (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5236637A (en) | 1984-08-08 | 1993-08-17 | 3D Systems, Inc. | Method of and apparatus for production of three dimensional objects by stereolithography |
US5529473A (en) | 1990-07-05 | 1996-06-25 | E. I. Du Pont De Nemours And Company | Solid imaging system using differential tension elastomerc film |
US5391072A (en) | 1990-10-29 | 1995-02-21 | E. I. Du Pont De Nemours And Company | Solid imaging apparatus having a semi-permeable film |
US5961261A (en) | 1996-09-09 | 1999-10-05 | Stark; Emil | Clamping cylinder for pulling in a pull-in nipple, a respective pull-in nipple and a clamp system, for use with flying chips |
US6283465B1 (en) | 1999-01-20 | 2001-09-04 | Vischer & Bolli Ag | Clamping device |
US7438846B2 (en) | 2001-04-23 | 2008-10-21 | Envisiontec Gmbh | Apparatus and method for the non-destructive separation of hardened material layers from a flat construction plane |
US8066289B2 (en) | 2005-03-31 | 2011-11-29 | Schunk Gmbh & Co. Kg Spann-Und Greiftechnik | Rapid clamping system |
US7892474B2 (en) | 2006-11-15 | 2011-02-22 | Envisiontec Gmbh | Continuous generative process for producing a three-dimensional object |
US8110135B2 (en) | 2007-10-26 | 2012-02-07 | Envisiontec Gmbh | Process and freeform fabrication system for producing a three-dimensional object |
US20130295212A1 (en) | 2012-04-27 | 2013-11-07 | University Of Southern California | Digital mask-image-projection-based additive manufacturing that applies shearing force to detach each added layer |
US20130292862A1 (en) | 2012-05-03 | 2013-11-07 | B9Creations, LLC | Solid Image Apparatus With Improved Part Separation From The Image Plate |
US9205601B2 (en) | 2013-02-12 | 2015-12-08 | Carbon3D, Inc. | Continuous liquid interphase printing |
US9211678B2 (en) | 2013-02-12 | 2015-12-15 | Carbon3D, Inc. | Method and apparatus for three-dimensional fabrication |
US9216546B2 (en) | 2013-02-12 | 2015-12-22 | Carbon3D, Inc. | Method and apparatus for three-dimensional fabrication with feed through carrier |
WO2015164234A1 (en) | 2014-04-25 | 2015-10-29 | Carbon3D, Inc. | Continuous three dimensional fabrication from immiscible liquids |
US9598606B2 (en) | 2014-06-23 | 2017-03-21 | Carbon, Inc. | Methods of producing polyurethane three-dimensional objects from materials having multiple mechanisms of hardening |
US9676963B2 (en) | 2014-06-23 | 2017-06-13 | Carbon, Inc. | Methods of producing three-dimensional objects from materials having multiple mechanisms of hardening |
US9453142B2 (en) | 2014-06-23 | 2016-09-27 | Carbon3D, Inc. | Polyurethane resins having multiple mechanisms of hardening for use in producing three-dimensional objects |
WO2016133759A1 (en) | 2015-02-20 | 2016-08-25 | Carbon3D, Inc. | Methods and apparatus for continuous liquid interface printing with electrochemically supported dead zone |
WO2016145182A1 (en) | 2015-03-12 | 2016-09-15 | Carbon3D, Inc. | Additive manufacturing using polymerization initiators or inhibitors having controlled migration |
US20170173881A1 (en) * | 2015-12-22 | 2017-06-22 | Carbon, Inc. | Three-Dimensional Printing Using Selectively Lockable Carriers |
US20170260418A1 (en) | 2016-03-08 | 2017-09-14 | 3D Systems, Incorporated | Non-Isocyanate Polyurethane Inks for 3D Printing |
US20170291804A1 (en) * | 2016-04-12 | 2017-10-12 | General Electric Company | Rotatable engagement of additive manufacturing build plate |
WO2018006018A1 (en) | 2016-07-01 | 2018-01-04 | Carbon, Inc. | Three-dimensional printing method and apparatus for reducing bubbles by de-gassing through build plate |
WO2018006029A1 (en) | 2016-07-01 | 2018-01-04 | Carbon, Inc. | Three-dimensional printing with build plates having reduced pressure and/or channels for increased fluid flow |
Non-Patent Citations (5)
Title |
---|
J. POELMAJ. ROLLAND: "Rethinking digital manufacturing with polymers", SCIENCE, vol. 358, 15 December 2017 (2017-12-15), pages 1384 - 1385 |
J. TUMBLESTOND. SHIRVANYANTSN. ERMOSHKIN ET AL.: "Continuous liquid interface production of 3D Objects", SCIENCE, vol. 347, 16 March 2015 (2015-03-16), pages 1349 - 1352 |
J. TUMBLESTOND. SHIRVANYANTSN. ERMOSHKIN ET AL.: "Continuous liquid interface production of 3D objects", SCIENCE, vol. 347, pages 1349 - 1352 |
R. JANUSZIEWCZ ET AL.: "Layerless fabrication with continuous liquid interface production", PROC. NATL. ACAD. SCI. USA, vol. 113, 18 October 2016 (2016-10-18), pages 11703 - 11708, XP055542052, doi:10.1073/pnas.1605271113 |
R. JANUSZIEWICZ ET AL.: "Layerless fabrication with continuous liquid interface production", PNAS, vol. 113, 18 October 2016 (2016-10-18), pages 11703 - 11708, XP055542052, doi:10.1073/pnas.1605271113 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021222086A1 (en) | 2020-04-28 | 2021-11-04 | Carbon, Inc. | Methods of making a three-dimensional object |
WO2021221900A1 (en) | 2020-04-30 | 2021-11-04 | Carbon, Inc. | Film remover apparatus for additive manufacturing build platforms and related methods |
WO2021221877A1 (en) | 2020-04-30 | 2021-11-04 | Carbon, Inc. | Film applicator apparatus for additive manufacturing build platforms and related systems |
WO2022260921A1 (en) | 2021-06-09 | 2022-12-15 | Carbon, Inc. | Systems and methods for making polymer dental appliances |
WO2023205716A1 (en) | 2022-04-22 | 2023-10-26 | Carbon, Inc. | Hollow dental molds configured for high throughput cleaning |
Also Published As
Publication number | Publication date |
---|---|
CN216579226U (en) | 2022-05-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2020069167A1 (en) | Removable build platform for an additive manufacturing apparatus | |
US10611080B2 (en) | Three-dimensional printing using selectively lockable carriers | |
US11642836B2 (en) | Removable window cassette for an additive manufacturing apparatus | |
EP1780262B1 (en) | Microchannel array | |
US20030025227A1 (en) | Reproduction of relief patterns | |
US20210237358A1 (en) | Resin reclamation centrifuge rotor for additively manufactured objects | |
CN103946005A (en) | Composite molding manufacturing method | |
EP1837419A1 (en) | Matrix holder | |
US11901181B2 (en) | Carrier-assisted method for parting crystalline material along laser damage region | |
US20190291343A1 (en) | Additive manufacturing carrier platform with window damage protection features | |
RU2642880C2 (en) | Casting cup assembly for ophthalmic device formation | |
CN103140339B (en) | For the production of the instrument and supplies of plano-convex silicon-on-glass ketone lens arra | |
KR101961459B1 (en) | Device and method for single cell screening based on inter-cellular communication | |
TW200422252A (en) | A method for manufacturing a polymer chip and an integrated mold for the same | |
US10828833B2 (en) | Three dimensional printing system with improved support fixture | |
US20130029091A1 (en) | Resin sheet, method of producing the same and through-hole forming apparatus | |
WO2019222094A1 (en) | Stereolithography apparatus with individually addressable light source arrays | |
US20210323223A1 (en) | Window Variability Correction in Additive Manufacturing | |
US20230226542A1 (en) | 3d printing of organoid passaging plate | |
KR20140046661A (en) | System for co-culturing cancer cells with feeder cells | |
EP3259119B1 (en) | Manufacture of ophthalmic lenses | |
CN1856596A (en) | Electrochemical deposition chambers for depositing materials onto microfeature workpieces | |
CN219898198U (en) | Automatic packaging system of micro-fluidic chip | |
TW201922468A (en) | Device for moulding lenses and method of manufacturing lenses | |
US9995855B2 (en) | Method and device for producing a lens wafer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19783946 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19783946 Country of ref document: EP Kind code of ref document: A1 |