Multi-material print hoppers and platform systems for additive manufacturing devices

Abstract

The present invention is a 3D printing system for retrofitting a 3D printer to print multiple 3D printed objects. The system includes a platform adapted for use with the 3D printer, the platform including a plurality of build surfaces; a plurality of reservoirs adapted to align with the build surfaces of the platform, each reservoir storing a unique printing material; and an adapter configured to secure the reservoirs to a base of the 3D printer in a manner such that each reservoir is aligned with a curing light engine of the 3D printer and each reservoir is aligned with a corresponding build surface of the build surfaces of the platform. The system enables simultaneous printing of multiple photopolymer materials, significantly reducing total printing time and improving printing efficiency.

Description

[0001] Cross-references to related applications

[0002] This application is a partial continuation of U.S. non-provisional application No. 18 / 244,380, filed September 11, 2023, which is a continuation of U.S. patent application No. 18 / 133,521, filed April 11, 2023, which is a non-provisional application of U.S. provisional application No. 63 / 329,847, filed April 11, 2022, and claims priority thereto. The disclosure of each application is incorporated herein by reference in its entirety. Technical Field

[0003] This invention generally relates to additive manufacturing apparatus. More specifically, this invention relates to apparatus, systems, and methods for creating three-dimensional (3D) objects using additive manufacturing technology that employs disposable cartridges, which may be disposable or recyclable. Background Technology

[0004] 3D printing is a process of creating three-dimensional objects by depositing material, typically in layers. Additive manufacturing uses 3D modeling software to create a design or scan an object. The software then translates the design into a layer-by-layer framework for additive manufacturing. 3D printing encompasses a variety of manufacturing technologies. Each technology differs in material selection, surface treatment, durability, and manufacturing speed and cost. One of these is Digital Light Processing (DLP).

[0005] DLP is a process of creating objects using a 3D printer that uses a digital light projector as the light source to cure photoreactive polymers. DLP technology utilizes light and liquid resin to create solid parts and products. The light source incident on the surface of the object being printed is controlled by micromirrors present in the system. Typically, a DLP printer is built around a resin tank with a transparent bottom and a build platform at the top to create objects layer by layer. It is similar to stereolithography (SLA), but differs in the use of a different light source.

[0006] The additive manufacturing process using stereolithography has four basic components. It uses a photopolymer contained in a VAT (a container for liquid photopolymer) exposed to a light source. Light from the source initiates polymerization on a build platform to transform the liquid into a solid, to which the solid part adheres. Current systems utilize a generic VAT that holds a large amount of photopolymer and uses a large platform to provide high versatility for printing. This has a formal drawback: more resin is required to start printing, and there is a risk of wasting more resin if the print fails. Furthermore, the amount of resin poured is user-determined, potentially leading to print failures due to the user pouring too much or too little resin.

[0007] Various additive manufacturing processes and techniques are known in the art; however, none of them provide a solution for an additive manufacturing apparatus that has multiple canisters on the same printer (i.e., a DLP printer) with a single Z-axis control to print multiple materials at once. Furthermore, no disposable or reusable cartridges for constructing specific parts with minimal resin treatment have been disclosed.

[0008] Therefore, there is a need for a 3D printing apparatus that can print multiple materials at once. There is also a need for an apparatus with disposable or single-use ink cartridges that minimize waste and eliminate the need for certain equipment. Furthermore, there is a need for an ink cartridge, container, or can assembly that minimizes material waste during small-batch printing. This invention has been developed for these purposes. Summary of the Invention

[0009] This invention generally discloses an additive manufacturing apparatus that employs a single-use cartridge or reservoir assembly suitable for minimizing material waste during low-volume printing.

[0010] In an exemplary embodiment, the cartridge may be disposable or recyclable, including a built-in molding material reservoir and a build plate used by additive manufacturing apparatus to form a single 3D object.

[0011] According to some aspects of the present invention, a 3D printing system is provided for modifying a 3D printer to print multiple 3D printed objects. The system includes: a removable platform (also referred to herein as the platform) adapted for use with the 3D printer, the platform including a plurality of build surfaces; a plurality of material reservoirs adapted to be aligned with the build surfaces of the platform, each material reservoir storing a unique printing material; and an adapter configured to secure the material reservoirs to the base of the 3D printer such that: each material reservoir is aligned with the curing light engine of the 3D printer, and each material reservoir is aligned with a corresponding build surface of the platform's build surface. This system enables the simultaneous printing of multiple photopolymer materials, significantly reducing total printing time and improving printing efficiency.

[0012] According to some aspects of the present invention, an additive manufacturing apparatus may be referred to as a 3D printer. The 3D printer may include a container or cartridge-based resin tank that can be pre-filled and sealed with a molding material, such as a photocurable resin. In some exemplary embodiments, a cartridge-based resin tank with photocurable resin is an innovative and intelligent solution designed to allow the operator to complete the printing process with minimal resin handling and eliminates the need to measure the amount of resin during setup. In some exemplary embodiments, the resin is in a liquid or paste form. The resin is hardened using visible light and / or ultraviolet (UV) light. In some exemplary embodiments, the cartridge-based resin tank includes a permeable layer or sealing layer on its top side. The permeable layer is configured to seal the resin. In some exemplary embodiments, the cartridge-based resin tank further includes an optically transparent layer on the other side. The optically transparent layer is configured to allow ultraviolet light to pass through to initiate polymerization.

[0013] In some exemplary embodiments, the cartridge-based resin container includes a small build platform area, or a build platform or build plate. In some exemplary embodiments, the build platform is the surface on which the printed part adheres during the printing process. In some exemplary embodiments, the build platform is configured to support the printed part during the printing process. In some exemplary embodiments, the build platform allows for application-specific containerization to minimize resin waste during low-volume printing. In some exemplary embodiments, the container and build platform can be a cartridge for building a specific part, such as a dental instrument. Once the build is complete, the cartridge-based resin container and build platform or the cartridge is used up and discarded, i.e., disposable or recyclable.

[0014] In some exemplary embodiments, the cartridge-based resin container further includes a printing screen or printing surface. In some exemplary embodiments, the printing screen is a surface that allows light to pass through to cure the resin. The printing screen is bonded to the cured resin. The bond between the printing screen and the resin is weak enough that a part can be separated from the printing screen to print the next layer. In some exemplary embodiments, printing occurs inside a cartridge-based resin container pre-filled with resin. In some exemplary embodiments, the build platform and the printing screen are integrated into a sealed cartridge-based resin container pre-filled with light-curing resin.

[0015] In some exemplary embodiments, the build platform may be located inside or outside the cartridge-based resin tank. In some exemplary embodiments, the build platform is integrated into the cartridge-based resin tank. In this arrangement, the cartridge-based resin tank contains resin and the build platform. In some exemplary embodiments, the Z-axis arm of the 3D printer houses a mating device. This mating device is configured to mate with the build platform in the cartridge-based resin tank and break the seal of the resin in the cartridge-based resin tank. Once printing is complete, the printed part is removed from the print screen, and the build platform can be discarded. In this type of build platform configuration, the platform arm and external printer features are minimally exposed to resin and do not require user cleaning.

[0016] In another embodiment, the build platform is located outside the cartridge-based resin tank. In some exemplary embodiments, the build platform may be located on the Z-axis arm of the 3D printer. In this arrangement, the build platform is located on the Z-axis arm. In some exemplary embodiments, the build platform has an arrangement that allows it to pierce a seal on the top side of the cartridge-based resin tank and approach the resin to initiate the printing process.

[0017] In some exemplary embodiments, the build platform interacts with the penetrable layer or sealing surface in different ways to approach the resin. The interaction methods may include puncture interaction methods and built-in platform interaction methods. In the puncture interaction method, the sealing surface of the cartridge-based resin container is punctured by the build platform. In some exemplary embodiments, the puncture is designed to eliminate resin contamination from the seal.

[0018] In the built-in platform interaction method, the build platform is located inside a cartridge-based resin container. In some exemplary embodiments, a mechanism associated with the Z-axis arm interacts with the build platform and clamps it to initiate the printing process. In some exemplary embodiments, the build platform pierces a permeable layer before initiating the printing process. In another embodiment, the permeable layer moves and bends according to the printing cycle. In some exemplary embodiments, the permeable layer is made of a flexible material.

[0019] In some exemplary embodiments, the cartridge-based resin container is used with one or more adapters to house the resin tank. The adapters can interact with the cartridge-based resin container via mechanical or magnetic fastening. In some exemplary embodiments, the adapters can be fixed or removable components.

[0020] In another embodiment, a single DLP printer is used to print multiple materials simultaneously. The single DLP printer includes a platform that can be detached but does not have independent z-axis control. In some exemplary embodiments, the single DLP printer includes a container. In some exemplary embodiments, the container may be a disposable canister that contains printing resin during the printing process. In some exemplary embodiments, the container is pre-filled with photocurable resin for the printing process. In some exemplary embodiments, the container includes one or more compartments configured to contain printing resin during the printing process. The container physically separates the resin into individual compartments. This can be accomplished by using dividers from multiple containers on a single part.

[0021] In some exemplary embodiments, the container further includes a build platform or build plate. In some exemplary embodiments, the build platform is a surface on which the printed part adheres during the printing process. In some exemplary embodiments, the container and build platform can be a cartridge for building a specific part, such as a dental instrument. In some exemplary embodiments, the container further includes a printing screen. In some exemplary embodiments, the printing screen is a surface that allows light to pass through to cure the resin. The printing screen is bonded to the cured resin. This bond is weak enough that the part can detach from the printing screen to print the next layer. In some exemplary embodiments, the build platform further includes at least one built-in heater to achieve a faster heating time.

[0022] The above overview contains simplifications, generalizations, and omissions of details and is not intended as a comprehensive description of the claimed subject matter, but rather as a brief overview of some of its associated functions. Other systems, methods, functions, features, and advantages of the claimed subject matter will be, or will become apparent to those skilled in the art, upon review of the following figures and detailed written description. Attached Figure Description

[0023] The description of this exemplary embodiment can be read in conjunction with the accompanying drawings. It should be understood that, for the sake of brevity and clarity, the elements shown in the drawings are not necessarily drawn to scale. For example, the dimensions of some elements are exaggerated relative to others. Embodiments incorporating the teachings of this disclosure are shown and described with reference to the accompanying drawings presented herein, wherein:

[0024] Figure 1 A block diagram of a system according to some exemplary embodiments of the present invention is shown.

[0025] Figure 1A A cross-sectional view of an ink cartridge according to some exemplary embodiments of the present invention is shown.

[0026] Figure 1B The operation of an ink cartridge according to some exemplary embodiments of the present invention is illustrated.

[0027] Figure 2 A system according to some exemplary embodiments of the present invention is shown.

[0028] Figures 3-5 An adapter and adapter components for using ink cartridges in a conventional 3D printer according to the present invention are shown.

[0029] Figure 6 An exploded view of an ink cartridge according to some exemplary embodiments of the present invention is shown.

[0030] Figure 7 A perspective view of a resin tank according to some exemplary embodiments of the present invention is shown.

[0031] Figures 8-9 Different perspective views of the 3D printer's build platform in some exemplary embodiments of the present invention are shown.

[0032] Figure 10 An exploded view of an ink cartridge according to some exemplary embodiments of the present invention is shown.

[0033] Figure 11 It shows according to Figure 10 A perspective view of the ink cartridge of the embodiment shown.

[0034] Figures 12-17 Different perspective views of an adapter according to some exemplary embodiments of the present invention are shown.

[0035] Figure 18 Block diagrams of apparatus or kits according to some exemplary embodiments of the present invention are shown.

[0036] Figure 18-1 A block diagram of a system according to some exemplary embodiments of the present invention is shown.

[0037] Figure 18-2 A flowchart of a method according to some exemplary embodiments of the present invention is shown.

[0038] Figure 19 An exploded view of the 3D printing kit according to the present invention is shown.

[0039] Figure 20 A rear bottom perspective view of the platform of the 3D printing kit according to the present invention is shown.

[0040] Figure 21 An isometric side view of the platform of the 3D printing kit according to the present invention is shown, and a detailed view of the interior of the plurality of building platforms is further shown.

[0041] Figure 22 An isometric side view of multiple cans of a 3D printing kit according to the present invention is shown.

[0042] Figure 23 An exploded view of one of the multiple resin tanks of a 3D printing kit according to the present invention is shown.

[0043] Figure 24 A rear view of the resin tank of the 3D printing kit according to the present invention is shown.

[0044] Figure 25 A top view shows multiple resin tanks of a 3D printed kit in a stacked state.

[0045] Figure 26 It shows in Figure 24 The sectional view at point AA.

[0046] Figure 27 A cross-sectional view of multiple resin tanks of a 3D printed kit in a stacked state is shown.

[0047] Figure 27-1 A storage tank connected to an adapter according to the present invention is shown.

[0048] Figure 28 An isometric side view of an adapter for a 3D printed kit according to the present invention is shown.

[0049] Figure 29 A top view of the adapter of the 3D printed kit according to the present invention is shown.

[0050] Figure 30 It shows in Figure 28 The sectional view at point AA.

[0051] Figures 31A-31B A rear bottom perspective view of the adapter of the 3D printed kit according to the present invention is shown.

[0052] Figure 32 It shows in Figure 28 The sectional view at point BB.

[0053] Figure 33 An exemplary flowchart of RFID reading of an adapter for a 3D printed kit according to the present invention is shown. Detailed Implementation

[0054] Embodiments of the invention will now be described with reference to the accompanying drawings. It is anticipated that the invention may be practiced in other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are to be considered in all respects only as illustrative and not restrictive. Generally, the present invention relates to an apparatus and system for modifying a 3D printer to print multiple 3D printed objects.

[0055] First go to Figure 1The diagram illustrates a block diagram of a system according to some exemplary embodiments of the present invention. More specifically, Figure 1 System 100 is depicted, comprising: a reservoir assembly 101 that contains molding material, such as photocurable resin; a platform 102, which may be a component of the reservoir assembly 101 or a separate component from the reservoir assembly 101 in some exemplary embodiments as discussed below; a tank or reservoir 103 that contains molding material and is generally integral with the reservoir assembly 101; an actuator 104 for moving the platform 102 relative to the reservoir 103 along the z-axis; a light module 105 for curing layers of molding material onto the surface of the platform or onto previously cured layers of molding material until a three-dimensional (3D) object is formed; and a controller 106 configured to actuate the platform and emit curable light into the reservoir to form the 3D object. Furthermore, in some exemplary embodiments, as will be further discussed below, one or more adapters 107 may be employed to adapt existing additive manufacturing apparatuses, such as 3D printers, to utilize the reservoir assembly according to the invention.

[0056] The reservoir assembly 101 is adapted to contain molding material, such as light-cured resin. In some exemplary embodiments, the reservoir assembly 101 is a limited-use cartridge pre-filled with sufficient molding material or resin to construct a single 3D object, such as, for example, a single dental crown, a single dental instrument, or a single printable 3D object in the dental field. In some exemplary embodiments, the cartridge is limited-use because once the 3D printed object is formed, the cartridge can be discarded (i.e., single-use) or recycled. In embodiments of the reservoir assembly 101 of the present invention that includes a cartridge, the reservoir assembly 101 may include a platform component forming a platform 102 on which the intended 3D object is formed or cured during the molding process; and a reservoir component forming a reservoir 103 for securing and maintaining the molding material or resin intended for forming the 3D object fresh. For example, see [link to relevant documentation] without limiting the scope of the invention. Figure 1A , Figure 6 , Figure 10 and Figure 11 The illustration shows different embodiments of ink cartridges for limited use according to the invention, which include a platform and a reservoir within an ink cartridge or reservoir assembly. In other exemplary embodiments according to the invention, such as... Figure 7 , Figure 8 and Figure 9As shown, the storage tank assembly 101 may not include the platform 102. In embodiments where the storage tank assembly 101 does not include the platform 102, the system 100 still uses the platform 102, except that the platform 102 is a separate component and not integrated with the storage tank assembly 101. The platform is similarly actuated by an actuator 104, which is configured to move the platform 102 relative to the storage tank 103 along the z-axis.

[0057] In such exemplary embodiments, the storage tank 103 is integrated with the storage tank assembly 101 such that a portion of the storage tank assembly 101 forms the storage tank 103, which holds or contains molding material or resin for forming the intended 3D object.

[0058] Platform 102, whether integrated with or separate from the storage tank assembly 101, includes a build surface adapted to receive a layer of molding material, which is typically cured onto the build surface to support a 3D object built on platform 102. Therefore, platform 102 should be constructed of a suitable material compatible with printing or molding materials, as understood in the field of additive manufacturing.

[0059] The storage tank 103 is typically integrated with or constitutes part of the storage tank assembly 101, and typically includes a transparent surface that both accommodates the molding material inside the storage tank 103 and allows curing light to pass through in order to cure a layer of molding material onto the platform or a previously cured layer of molding material, so that a 3D object can be formed or constructed from the molding material on the platform.

[0060] Actuator 104 is typically any suitable motor or movable component that can be configured to move platform 102 relative to reservoir 103 along the z-axis during the forming or printing process to build a 3D object. In some exemplary embodiments, actuator 104 is directly coupled to a portion of cartridge or reservoir assembly 101 (see, for example...). Figure 10 In some exemplary embodiments, for example, in embodiments where the reservoir assembly 101 is not a cartridge and does not include the platform 102, the actuator 104 may be directly coupled to a component of the platform 102 outside the reservoir assembly 101 to move the platform during the molding process.

[0061] The light module 105 can be any suitable light source for curing the molding material into the desired 3D object. For example, and without limiting the scope of the invention, because different molding materials are activated by different types of energy, the light module can implement different components to project suitable light in order to cure the molding material inside the storage tank assembly 101. Therefore, although in some embodiments the light module can employ components that use blue light or ultraviolet light or any other suitable wavelength to activate the molding agent based on the properties of the molding material, those skilled in the art will understand that when using molding materials or molding agents that require other forms of energy, such as infrared light, lasers, X-rays, gamma radiation, etc., the light module should be appropriately modified to generate and output such required energy. Thus, for example, when infrared light is projected onto the molding agent, appropriate hardware and software must be employed so that the projector of the light module 105 can generate and project such infrared light. Similarly, if X-rays or gamma radiation are used, the projector can be completely replaced by an energy emitter that can generate and emit the appropriate form of energy onto the molding agent.

[0062] In some exemplary embodiments, the optical module 105 may include multiple optical engines that can be used to increase the maximum build space while maintaining the desired resolution. In such embodiments, the optical engines may be placed inside pre-designed fixtures to hold them in place. In some other embodiments, one or more optical engines may be used and translated simultaneously in the build space to maintain resolution while having maximum build space. In some exemplary embodiments, multiple optical engines may be employed to print multiple products in a single reservoir assembly 101, such as cartridges with dual reservoirs and dual platforms suitable for forming two 3D products in a single batch; this configuration can be used to print products that may require different parts with different molding materials, which would otherwise need to be formed in separate batches. For example, without limiting or departing from the scope of the invention, a set of dentures may be formed in a single batch, wherein one reservoir in the reservoir assembly is dedicated to the gingival portion of the denture requiring a first molding material, and a second reservoir in the reservoir assembly is dedicated to the dental portion of the denture requiring a second molding material. See also Figure 6 This is a non-limiting example of a storage tank assembly suitable for accommodating two molding materials and printing multiple 3D objects in a single build batch.

[0063] Controller 106 is a suitable controller responsible for receiving model data from a remote computer or locally to process the image and drive actuator 104 and control the light module 105 so that system 100 forms the desired 3D object. For these purposes, although various configurations of controller 106 may be possible without departing from the scope of the invention, controller 106 is generally configured to actuate platform 102 and emit curable light into reservoir 103 to form the desired 3D object, for which a suitable amount of molding material is included in reservoir assembly 101 for limited or short-term use.

[0064] Furthermore, in some exemplary embodiments discussed further below, system 100 may include one or more adapters 107 to facilitate use of the material reservoir assembly 101 with conventional or existing additive manufacturing apparatus, such as a 3D printer. For example, Figures 3-5 An adapter assembly according to some exemplary embodiments of the present invention is shown, which modifies or adapts the transparent substrate or glass of an existing optical engine to receive a reservoir assembly or cartridge. In another example, Figure 7 An adapter according to some exemplary embodiments of the present invention is shown, which modifies or adapts an existing tank to receive a storage tank assembly or ink cartridge.

[0065] Figure 1A A cross-sectional view of an ink cartridge according to some exemplary embodiments of the present invention is shown. More specifically, Figure 1A A cross-sectional view of a cartridge reservoir assembly 101 is shown, which is an ink cartridge according to an exemplary embodiment of the present invention. As will be described below, in Figure 1A In one embodiment, the cartridge assembly or ink cartridge 101 includes a reservoir 103 for receiving molding material or resin 108, and a platform 102 movably built into the cartridge 101. In this embodiment, the cartridge 101 is pre-filled and sealed with photocurable resin 108. This embodiment of the cartridge 101 allows the operator to complete the printing or build process with minimal resin handling and eliminates the need to measure the amount of resin during setup. In some exemplary embodiments, the resin 108 is in liquid or paste form. The resin 108 is cured using visible light and / or ultraviolet (UV) light. In this embodiment, the cartridge 101 includes an outer housing that at least partially forms the reservoir 103 and is adapted to receive the platform 102 within the housing. In an exemplary embodiment, a cavity 109 is formed between the platform 102 and the inner wall of the reservoir 103, wherein the cavity 109 is pre-filled with resin 108 or otherwise adapted to receive resin 108.

[0066] In an exemplary embodiment, the bottom surface 110 of platform 102 is a build surface on which the intended 3D object is cured during the build process. In a sealed or unused state, platform 102 is fixed to the bottom surface 111 of reservoir 103, which is transparent, optically clear, or configured to allow curing light, such as UV light, to pass through to allow polymerization during use of cartridge 101.

[0067] In the initial stage, or before use, cartridge 101 is preferably sealed such that the surface 110 of platform 102 is fixed to the surface 111 of reservoir 103, thereby protecting the integrity of resin receiving cavity 109 and keeping resin 108 fresh inside cartridge 101 before use. During operation, as in Figure 1B As shown, in step (1), cartridge 101 is positioned or placed such that it is exposed to curing light from the optical module of system 100. In step (2), platform 102 is lifted or otherwise moved relative to reservoir 103 along the z-axis such that surface 110 of platform 102 separates from surface 111 of reservoir 103, allowing resin 108 to flow from cavity 109 into the space between surfaces 110 and 111 of platform 102 and reservoir 103. This can be achieved by activating actuator 104 adapted to move platform 102, for example, by moving it up and down, such that platform 102 is lifted away from reservoir 103 and lowered back into reservoir. In an exemplary embodiment, adapter 107 is used to secure cartridge 101 to a fixed structure, such as a transparent support plate of optical module 105. During or between the movement of platform 102 along the z-axis, optical module can be activated to emit curing light and cure a layer of resin 108 onto the surface of platform 110. In step (3), the process of moving platform 102 and guiding light from light module 103 through transparent surface 111 into storage tank is repeated, so that 3D objects can be formed layer by layer inside storage tank 103.

[0068] In some exemplary embodiments, cartridge 101 further includes a permeable layer or sealing layer 112 on its top side. The permeable layer 112 is configured to seal the resin and hold the platform 102 in place. As mentioned above, the build surface 110 is the surface on which the printed part adheres during the printing process. In some exemplary embodiments, the build surface 110 is configured to support the build part during the forming process. In some exemplary embodiments, the platform 102 may include a size of about 2500 mm² or less. In some exemplary embodiments, the build surface 110 allows the use of application-specific containers to minimize resin waste during low-volume printing. In some exemplary embodiments, cartridge 101 and build surface 110 can serve as a cartridge for building a specific component, such as a dental instrument. Once the build is complete, cartridge 101 and build surface 110, or the cartridge itself, can be used up and disposed of or recycled.

[0069] As mentioned above, cartridge 101 includes a surface 111, which is typically a printing screen. In some exemplary embodiments, the printing screen is a surface that allows light to pass through to cure resin 108. The printing screen may be bonded to the cured resin 108; however, the bond between the printing screen and the resin is typically weak, allowing the 3D-printed part, or each layer formed therefrom, to separate from the printing screen in order to form the next layer.

[0070] In some exemplary embodiments, the formation of the 3D object 200 occurs inside the cartridge 101 pre-filled with resin 108, as if in Figure 2 As shown in the diagram. In some exemplary embodiments, the Z-axis arm of the 3D printer includes a mating device 201. This mating device 201 is configured to mate with the platform 102 of the cartridge 101 and break the seal for the molding material inside the cartridge 101. Once the 3D object is formed, the 3D object or 3D printed part 202 can be removed from the cartridge 101, and the platform 102 can be discarded or recycled. In this type of build platform configuration, the platform arm and external additive manufacturing device components are minimally exposed to the molding material, such as resin, and do not require user cleaning.

[0071] In another embodiment, the build surface 110 is located outside the cartridge 101. In some exemplary embodiments, the build surface 110 may be located on the Z-axis arm of the 3D printer. In this arrangement, the build surface 110 is located on the Z-axis arm. In some exemplary embodiments, the build surface 110 has an arrangement that allows it to pierce the seal on the top side of the cartridge 101 and approach the resin 102 to initiate the printing process.

[0072] In some exemplary embodiments, platform 102 interacts with the penetrable layer or sealing surface in different ways to approach the molding material. The interaction methods may include puncture interaction methods and built-in platform interaction methods. In the puncture interaction method, the sealing surface of cartridge 101 can be punctured by the platform. In some exemplary embodiments, the puncture is designed to eliminate resin contamination from the seal.

[0073] In the built-in platform interaction method, the platform is located inside the ink cartridge 101. In some exemplary embodiments, a mechanism associated with the Z-axis arm interacts with the platform and clamps the platform to initiate the printing process. The system may have several variations. In some exemplary embodiments, the platform pierces the permeable layer before initiating the printing process. In another embodiment, the permeable layer moves and bends according to the printing cycle. In some exemplary embodiments, the permeable layer is made of a flexible material.

[0074] refer to Figures 3-5 An adapter assembly is shown. More specifically, according to some exemplary embodiments of the invention, the illustrated adapter assembly is configured to modify or adapt the transparent substrate or glass of an existing light engine to receive a reservoir assembly or cartridge. In exemplary embodiments, the adapter components (108, 110, and 112) can interact with the cartridge 101 via mechanical or magnetic fastening. In some exemplary embodiments, the adapter components (108, 110, and 112) can be fixed parts, in which case it becomes part of an additive manufacturing apparatus, such as an existing 3D printer. In another embodiment, the adapter components (108, 110, and 112) can include removable parts, in which case the parts are securely mounted on the printer and can be accessed or moved by a user.

[0075] For example, without departing from the scope of the invention, Figure 3 An exemplary material reservoir assembly adapter frame 301 is shown, configured to connect to the screen or transparent panel 302 of a 3D printer, or the light module (not shown) of the 3D printer. The material reservoir assembly adapter frame 301 is also configured to receive... Figure 5 The ink cartridge holder 303 shown can be fixed to the ink cartridge or ink cartridge reservoir assembly according to the present invention.

[0076] refer to Figure 6An exploded view of a cartridge 600 for a single DLP printer is shown. In some exemplary embodiments, the single DLP printer is used to print multiple materials simultaneously. The single DLP printer includes a platform that can be detached but does not have independent z-axis control. In some exemplary embodiments, cartridge 600 may be a disposable reservoir assembly that contains printing resin or molding material during the molding or printing process. In some exemplary embodiments, cartridge 600 is pre-filled with light-curable resin; in some exemplary embodiments, multiple types of curable resin may be sealed and stored in cartridge 600. For this purpose, cartridge 600 includes one or more compartments (602 and 604). Cartridge 600 physically distributes resin into the individual compartments (602 and 604), which can be achieved by a separator 605.

[0077] In some exemplary embodiments, cartridge 600 further includes a platform 606 comprising a plurality of build surfaces 607 and 608. Cartridge 600 is similar to cartridge 101 as discussed above, but includes a plurality (i.e., two in this case) of material reservoirs and dual built-in build surfaces 607 and 608, suitable for building components that may require 3D-printed parts of different materials or different components, such as a set of dentures or dental instruments. In some exemplary embodiments, cartridge 600 further includes dual printing screens or bottom surfaces 609 and 610, which are transparent and function similarly to surface 111—accommodating molding material within cartridge 600 and allowing suitable light to pass through to cure the molding material therein for building the desired 3D object.

[0078] refer to Figure 7 The image shows a perspective view of a resin container or reservoir assembly 700. The reservoir assembly 700 may be provided sealed and pre-filled with resin, or it may simply be provided to the user to be filled with molding material as needed. This is an alternative to the cartridge configuration of the present invention, but an embodiment of the reservoir assembly used in conjunction with a separate platform configured to align with the reservoir assembly 700. In some exemplary embodiments, the reservoir assembly 700 includes a reservoir 701 with a volume smaller than that of a conventional molding material container. The small volume is limited to accommodating a single model build. The reservoir assembly 700 is configured to contain or retain photocurable resin or molding material. In some exemplary embodiments, the reservoir 701 of the reservoir assembly 700 is pre-filled with molding material. In some exemplary embodiments, the reservoir 701 of the reservoir assembly 700 is designed to maximize resin height with a minimum cross-sectional area configured to optimize the amount of resin used.

[0079] In some exemplary embodiments, the minimum cross-sectional area of ​​the material reservoir 701 supports a single 3D printed object. For example, the minimum cross-sectional area is adapted to receive just enough molding material to construct a single dental crown. The reduction in cross-sectional area and the construction platform 800 (such as...) Figure 8 (As shown) This causes resin displacement, thereby allowing the resin to flow more easily. In some exemplary embodiments, the reservoir assembly 700 includes a smaller printing surface or printing screen 702. In some exemplary embodiments, the smaller printing screen allows the use of alternative materials for the optically transparent printing surface.

[0080] In an exemplary embodiment, as Figure 7 As shown in the view, the outer or surrounding surface 703 is configured to sit on a conventional molding material container, such that a conventional 3D printer can be adapted for use with the material reservoir assembly 700, thereby conforming to the present invention. A frame 704 can exemplarily support the surrounding surface 703, and thus support the material reservoir 701 of the material reservoir assembly 700. During use, the material reservoir assembly 700 can be simply placed on a conventional container.

[0081] refer to Figures 8-9 Different perspective views of the build platform 800 are shown. The build platform 800 is identical to a larger build platform. In some exemplary embodiments, the build platform 800 includes a z-axis arm. In some exemplary embodiments, the build platform 800 further includes a printing area 801. The printing area 801 of the build platform 800 can be modified to fit the printing screen 702 of the reservoir assembly 700. In some exemplary embodiments, the build platform 800 further includes at least one built-in heater, such as the heater described in U.S. Patent Application 17,990,256, which is incorporated herein by reference. The build platform 800 can employ a larger surface area exposed to the resin to achieve faster heating times.

[0082] Now let's move on to the next set of attached images. Figure 10 An exploded view of an ink cartridge according to some exemplary embodiments of the present invention is shown, and Figure 11 It shows according to Figure 10 The illustration shows a perspective view of the ink cartridge of the embodiment. More specifically, ink cartridge 1000 is shown, comprising: a platform adapter 1001 that both seals the ink cartridge and provides a connection to an actuator or motion arm of an additive manufacturing apparatus (such as a 3D printer); a platform 1002; a reservoir assembly 1003 adapted to align with the platform 1002; a reservoir assembly adapter body 1004 configured to receive at least a portion of the reservoir assembly 1003 of ink cartridge 1001; a locking or releasing mechanism 1005; and an adapter base 1006 configured to secure ink cartridge 1001 to an additive manufacturing or printing apparatus (not shown).

[0083] In some exemplary embodiments, cartridge 1000 includes a single-use cartridge for constructing a three-dimensional (3D) object using an additive manufacturing apparatus. In an exemplary embodiment, the cartridge includes a reservoir assembly 1003, which includes a reservoir 1003a sealed and pre-filled with a molding material; a transparent layer 1003b adapted to contain the molding material within the reservoir 1003a, the transparent layer 1003b being further adapted to allow polymerizing light to pass through for polymerization of at least one layer of the molding material; and a platform 1002 slidably housed within the reservoir assembly, adapted to move vertically relative to the transparent layer 1003b along the z-axis, and adapted to support a 3D object constructed on a surface 1002a of the platform 1002.

[0084] In some exemplary embodiments, the storage tank 1003a includes a divider (not shown in this view, but see [reference]). Figure 7 The divider divides the storage tank into multiple storage tanks suitable for accommodating one or more types of molding materials; and the platform includes multiple building surfaces suitable for alignment with each of the multiple storage tanks.

[0085] In some exemplary embodiments, a cavity is formed between the platform and the storage tank assembly to accommodate the molding material within the cavity. In some exemplary embodiments, during cartridge use, movement of the platform exposes the molding material inside the cavity to the platform's build surface (see, for example...). Figure 1A ).

[0086] In some exemplary embodiments, the cartridge 1001 further includes a permeable layer or sealing surface located on the top or bottom side of the cartridge, the permeable layer or sealing surface being configured to secure the platform inside the reservoir when the cartridge is in a sealed state. In some exemplary embodiments, the sealing surface is made of a flexible material that moves and bends according to the molding cycle.

[0087] In some exemplary embodiments, the cartridge includes a platform adapter 1001 configured to connect a platform to an actuator (e.g., a print arm (not shown in this view)) of an additive manufacturing apparatus. In some exemplary embodiments, the platform adapter 1001 is configured to pierce a permeable layer of molding material inside the reservoir 1003a of the sealed reservoir assembly 1003.

[0088] In some exemplary embodiments, as shown, cartridge 1001 further includes a reservoir assembly adapter 1005 configured to secure the reservoir assembly 1003 to the optical module of an additive manufacturing apparatus. In some exemplary embodiments, the reservoir assembly adapter 1005 interacts with the reservoir assembly via mechanical or magnetic fasteners incorporated therein. A base 1006 may be configured to secure the adapter to a suitable location on a pre-existing printer or additive manufacturing apparatus.

[0089] Figures 12-17 Different perspective views of adapters according to some exemplary embodiments of the present invention are shown. More specifically, these figures illustrate different types of adapters that attach ink cartridges according to the present invention to existing printers or additive manufacturing apparatuses.

[0090] Figure 12 A latch-based assembly is shown, comprising a latch locking mechanism 1201, a cartridge receiving port 1202, and an adapter base 1203. In this mechanism, the cartridge is clamped by a latch established on the adapter. The latch can be opened topwards or to the side.

[0091] Figure 13 An assembly based on a slider is shown, comprising a cartridge receiving hole 1302 (in which a cartridge is shown to be secured), a latching mechanism 1301, and an adapter base 1303. In this mechanism, the cartridge is held by a feature on the adapter, which engages / disengages with the aid of the slider. Figure 14 The same component without an ink cartridge installed is shown.

[0092] Figure 15 An assembly based on a pivoting element is shown, comprising a cartridge receiving port 1502, a locking mechanism 1501, and an adapter base 1503. In this mechanism, a pivoting element on the adapter is used to engage / disengage the cartridge. The pivoting element can be manually operated by the user or can be electronically driven.

[0093] Figure 16 and Figure 17 A hole-based assembly is shown, including a cartridge receiving hole 1600, a cartridge 1604, a hole locking mechanism 1601, and an adapter base 1603. In this mechanism, the cartridge engages / disengages via mechanical features similar to those used in cameras. The hole is reduced to engage the cartridge and enlarged to disengage it. The mechanism can be manually or electronically triggered by the user.

[0094] Advantageously, in some exemplary embodiments, the container of the present invention allows the operator to complete the printing process with minimal resin handling, eliminating the need to measure resin during setup. The build platform arm and external printer features are minimally exposed to resin and do not require user cleaning. The build platform is an application-specific container designed to minimize resin waste during small-batch printing. The container is used for printing multiple materials at once. Furthermore, the container and build platform can be disposable or single-use.

[0095] Now turning to the next set of figures, another aspect of the invention is disclosed in Figure 18 (Block diagram of an apparatus or kit according to some exemplary embodiments of the present invention) Figure 18-1 (Block diagram of a system according to some exemplary embodiments of the present invention) Figure 18-2 (Flowchart of a method according to some exemplary embodiments of the present invention) and Figure 19 (Exploded view of the 3D printing kit according to the invention).

[0096] Overall, these views illustrate embodiments of a printing apparatus, which can be a single device or a system, such as a kit, for modifying an existing 3D printer to simultaneously print multiple 3D objects or multiple three-dimensional parts of a single object; meaning during the same printing operation of the 3D printer.

[0097] In some embodiments, and without limiting the scope of the invention in any way, the kit may be a dual-printing kit having components suitable for retrofitting an existing 3D printer to print two 3D objects simultaneously. Naturally, instead of "dual," the kit may be adapted to print three, four, or any feasible plurality of 3D objects. The 3D objects can be a wide variety of 3D objects and may be related or unrelated. The invention has proven most effective when the 3D object involves a single component or printing job, as discussed further below. For example, without limiting the scope of the invention, a system according to this aspect of the invention can be used to print 3D objects, such as dental components or dental instruments, using biocompatible resins suitable for 3D objects. In some exemplary embodiments, the 3D object may include dentures, overnight braces, orthodontic appliances, crowns, and only a few non-limiting examples are listed. For example, in the case of dentures, the gingival portion of the denture may be constructed using a first group of one or more biocompatible resins or printing materials stored in a first reservoir; and the tooth portion of the denture may be constructed using a second group of one or more biocompatible resins or printing materials stored in a second reservoir. 3D-printed gums can be built on a first building surface of the platform, while the teeth can be built on a second building surface. Both components of a 3D-printed denture (i.e., teeth and gums) can be built or printed simultaneously, or in a single run of the 3D printer; when the printer's platform is activated, both components are built simultaneously. This method makes the construction of 3D-printed dentures more efficient.

[0098] Similarly, for overnight braces or aligners, or even crowns—which typically require the processing of multiple similar but not identical parts—it is useful to build or print multiple versions simultaneously or in a single run of a 3D printer; multiple complementary or corresponding parts (i.e., the desired overnight braces, aligners, or a set of crowns) are built simultaneously when the printer platform is activated.

[0099] In some exemplary embodiments, the dual-material system may include a kit. The kit may include a dual build platform, dual resin tanks or reservoirs, and an adapter. The dual build platform includes two build surfaces on a single platform, which are independent of each other, i.e., each build surface is adapted to receive 3D printed objects polymerized only on that build surface; each build surface is matched in size and location to a corresponding reservoir. The reservoirs are also independent of each other, such that each reservoir is adapted to contain a unique printing material, meaning that the printing material in each reservoir is only suitable for printing 3D objects on the corresponding build surface of the platform. In some embodiments, as will be discussed below, the unique printing material in one reservoir may differ in composition from the unique build material in the second reservoir (e.g., when building dentures, the printable resin suitable for the dentures typically differs in composition from the printable resin used to build the tooth portions of the dentures). Furthermore, the adapter may be provided with the system to facilitate securing the reservoirs to an existing base or support structure of an existing 3D printer and to align the reservoirs with each build surface of the platform. As mentioned above, the device is configured to print simultaneously with two different photopolymer resins, significantly reducing the total printing time and improving printing efficiency.

[0100] Now, let's get to the specifics. Figure 18 This figure illustrates a 3D printing system or kit suitable for retrofitting a 3D printer to print multiple 3D printed objects. More specifically, the figure depicts a system or kit 1800 comprising a platform 1801 adapted for use with a 3D printer 1810. The removable platform 1801 includes multiple build surfaces 1802 (i.e., although three build surfaces are shown, platform 1801 may include only two build surfaces, or four, or five, etc., without departing from the spirit or scope of the invention). Thus, platform 1801 is typically removable, allowing users to retrofit their existing 3D printers with the functionality of the invention. As will be discussed below, in some embodiments, a printer may be provided specifically for the purposes described herein without departing from the scope of the invention, and in those embodiments, platform 1801 may not need to be removable or interchangeable with other platforms. However, in exemplary embodiments, platform 1801 is removable.

[0101] Furthermore, system 1800 further includes a plurality of material reservoirs 1803 adapted to align with a plurality of build surfaces 1802 of platform 1801. In an exemplary embodiment, each material reservoir is sealable, allowing it to be provided to a user pre-filled with printable material suitable for use with a particular 3D object or part of a 3D object, as discussed above. Thus, although not strictly necessary, the material reservoir 1803 may be sealable and internally store unique printing material for use (as will be discussed further below). In other exemplary embodiments, the material reservoir may be sealable and not pre-filled with printing material or resin; in such exemplary embodiments, the user needs to pour printing material or resin into the reservoir to begin printing before printing.

[0102] Furthermore, system 1800 further includes adapter 1804 configured to secure a plurality of sealable reservoirs 1803 to the base of 3D printer 1810 such that: each of the plurality of sealable reservoirs 1803 is aligned with the curing light module 1813 of 3D printer 1810, and each of the plurality of sealable reservoirs 1803 is aligned and aligned with a corresponding build surface among a plurality of build surfaces 1802 of platform 1801.

[0103] Therefore, according to the present invention, a removable platform 1801 (which includes a plurality of independent build surfaces 1802), a plurality of material reservoirs 1802, and an adapter 1803 are provided to facilitate the modification of an existing 3D printer 1810 for simultaneous printing, including but not limited to, the ability to simultaneously print multiple parts or complementary 3D objects with a variety of different photopolymer resins during a single print job, thereby significantly reducing total print time and improving print efficiency. For example, the platform 1801 may be coupled to a motion module (typically an actuator or motor, which includes an arm capable of moving the platform during the build process) of the 3D printer 1810, and the adapter 1803 may be coupled to a base of the 3D printer 1810, such as a material reservoir support structure adapted to receive material reservoirs for the 3D printer. Thus, the adapter 1804 typically includes geometry aligned with a support structure 1812 of the 3D printer 1810. In some exemplary embodiments, the adapter 1804 is adapted to be coupled to or aligned with the body or housing of the curing photopolymer module 1813. For example, without limiting the scope of the invention, adapter 1804 may include geometry, periphery, or connectors that match or are designed to align with the body of the curing light module of an existing printer (such as a display cartridge (e.g., an LCD display cartridge) or housing forming part of the curing light module 1813). In this way, the transparent substrate forming the base of each cartridge slot is adequately positioned by adapter 1804 to align with the platform and curing light engine of the existing 3D printer.

[0104] As mentioned above, the material reservoir 1803 is removably coupled to the adapter 1804 to align the material reservoir with the platform (attached to the 3D printer 1810) and the curing light module 1813 of the 3D printer 1810. Once the components of the system 1800 are in place, the controller 1814 of the 3D printer 1810 can be configured to move the platform, thereby simultaneously moving multiple build surfaces so that each unique printing material in each reservoir is aggregated layer by layer onto the build surface, thereby building a 3D printed object on each build surface of the platform. In an exemplary embodiment, the controller 1814 can be configured to control the curing exposure time to handle any multiple different printing materials with different curing times; that is, a suitable algorithm or software executable by the controller 1814 can be configured to control the curing exposure time accordingly, whereby jobs with shorter curing times are extinguished first and remain extinguished until jobs with longer curing times are completed. To address the issues of curing time and 3D objects with different heights or sizes, it is desirable to independently control the curing exposure toward one of the multiple material reservoirs. For example, without limiting the scope of the invention, if part A is constructed on the first storage tank and the part is 2 cm high, while part B is constructed on the second storage tank and is 3 cm high, then printing parts A and B can begin simultaneously by projecting separate patterns for each part. Once part A is complete, the controller 1814 can stop the light module 1813 from projecting the pattern of part A and continue projecting the pattern of part B until part B is complete.

[0105] Figure 18-1 A similar system is described, but this system integrates each component—the platform, the hopper, and the hopper support structure—into a single, complete 3D printer. As will be understood by those skilled in the art, it is advantageous to have a dedicated device for the purposes of this invention, but it is also advantageous to be able to modify an existing printer to achieve the functions according to the invention.

[0106] Now let's move on to the next picture. Figure 18-2 The diagram illustrates a flowchart of a method according to some exemplary embodiments of the present invention. More specifically, Figure 18-2 A flowchart of method 1820 performed by a 3D printer for simultaneously printing parts of a dental instrument is shown. It should be understood that although presented in a specific order, the steps of method 1820 may include additional steps, have more or fewer steps in different embodiments, or even in a different order, without departing from the scope of the invention.

[0107] In step 1821, a removable platform suitable for use with a 3D printer may be received, wherein the removable platform includes multiple build surfaces. This may include, for example, engaging or connecting the platform 1801 to the printer 1810. In some exemplary embodiments, the 3D printer may detect that the printing platform is secured in place and ready for a printing job.

[0108] In step 1822, a plurality of sealable reservoirs may be received, each sealable reservoir adapted to be aligned with one of a plurality of build surfaces of the platform, and each sealable reservoir adapted to contain a unique printing material. This may include, for example, securing a plurality of sealable reservoirs 1803 to the base of the 3D printer 1810 via an adapter 1804 in such a manner that each of the plurality of sealable reservoirs 1803 is aligned with the curing light engine 1813 of the 3D printer 1810, wherein the sealable reservoirs 1803 are further adapted to be aligned with a plurality of build surfaces 1802 of the platform 1801.

[0109] In step 1823, the platform 1801 is moved and curing light is projected to simultaneously build 3D printed objects on each of the build surfaces 1802 of the platform 1801. As described above, this step may include controlling the curing light module 1813 in such a way that, since various different printing materials may have different curing times or different 3D objects may have different sizes, a suitable algorithm or software executable by the controller 1814 can be configured to control the curing light exposure time toward each corresponding material reservoir accordingly.

[0110] Now let's move on to the next set of figures. Figures 19-32 Various views of a multi-material printing kit according to an exemplary embodiment of the present invention are shown. Figure 19 An exploded view of the 3D printing kit according to the present invention is shown. More specifically, Figure 19 The dual-material printing kit 1830 is shown, which includes a platform 1900, two material reservoirs 2000, and an adapter 2100. The platform 1900 includes two different and independent build surfaces 1903 (see [link to documentation]). Figure 20 Furthermore, the plurality of storage tanks 2000 are adapted to be aligned with the plurality of build surfaces 1903 of the platform 1900. In some exemplary embodiments, such as the embodiments shown in these views, the platform 1900 is at least partially defined by a body, and a plurality of platform bodies 1904 extend from the body to a terminal surface forming each of the plurality of build surfaces 1903. That is, each of the plurality of build surfaces 1903 includes a surface on one of the platform bodies 1904 forming the platform 1900.

[0111] In some exemplary embodiments, each of the plurality of storage tanks 2000 may be adapted to store a unique printing material and be aligned with a corresponding build surface 1903. In this mechanism, each of the plurality of storage tanks 2000 may be matched in size and position to a corresponding build surface of the plurality of build surfaces 1903. In some exemplary embodiments, each of the plurality of storage tanks 2000 may be adapted to operate independently of the other storage tanks in the plurality of storage tanks 2000, meaning that each storage tank can be independently removed or attached to the adapter 2100, and that each storage tank can be used to independently build a 3D object different from the 3D object built in an adjacent storage tank. It is noteworthy that although the platform 1900 substantially controls the simultaneous movement of each build surface 1903, as discussed above, the curing light engine can be configured to address varying material curing times and 3D object sizes by guiding appropriate light patterns toward each storage tank area suitable for receiving curing light at appropriate times. In this way, different 3D objects with different printing materials can be printed or built simultaneously.

[0112] As in Figure 19 and Figure 27-1 As shown, adapter 2100 can be adapted to align with a plurality of material reservoirs 2000. In some exemplary embodiments, adapter 2100 can be employed to adapt existing additive manufacturing apparatus, such as a 3D printer, for modifying the 3D printer to print a plurality of 3D printed objects by utilizing the 3D printing kit according to the invention. In some exemplary embodiments, adapter 2100 can be configured to secure the plurality of material reservoirs 2000 to the 3D printer. In some exemplary embodiments, adapter 2100 can be fixedly or removably coupled to the 3D printer.

[0113] In some exemplary embodiments, the 3D printing kit may be a dual-material kit. In some exemplary embodiments, platform 1900 may be a dual-build platform having a first build surface and a second build surface, as in... Figure 19 and Figure 20 As shown in the illustration. In some exemplary embodiments, the plurality of storage tanks 2000 may be a dual resin tank having a first resin tank and a second resin tank, as illustrated in... Figure 19 and Figure 22 As shown, the first storage tank is adapted to store the first printing material, and the second storage tank is adapted to store the second printing material.

[0114] Figure 20 A rear-view perspective view of the platform of the 3D printing kit according to the present invention is shown. (As in...) Figure 20As shown, platform 1900 may include platform handle 1901, platform cover 1902, and a plurality of build platform bodies 1904, wherein each of the plurality of build platform bodies includes a build surface 1903. In some exemplary embodiments, the plurality of build platform bodies 1904 are mechanically fixed to each other, and in some embodiments as depicted in this view, the plurality of build platform bodies are integral with the body of platform 1900.

[0115] In some exemplary embodiments, the platform handle 1901 may be adapted to facilitate user manipulation of the platform using the 3D printing kit according to the invention. In some exemplary embodiments, the platform handle 1901 may be further adapted to secure the platform 1900 to the 3D printing apparatus. For example, without limiting the scope of the invention, in some exemplary embodiments, the platform 1900 may be secured to the printing arm of the 3D printing apparatus. In some exemplary embodiments, as in Figure 21 As shown, the platform handle 1901 may include a U-shaped recess to facilitate securing the platform handle 1901 to the 3D printing apparatus. In other exemplary embodiments, other shapes and structural types of the platform handle 1901 may be implemented for the purpose of securing the platform handle 1901.

[0116] In some exemplary embodiments, the lower portion of the platform handle 1901 can be removably secured to the platform cover 1902 by a securing mechanism. For example, and in no way limiting the scope of the invention, the securing mechanism may include a plurality of nuts and bolts positioned along the outer edge of the lower portion of the platform handle 1901 and the upper central region of the platform cover 1902.

[0117] In some exemplary embodiments, the platform cover 1902 may be removably secured to a plurality of build platform bodies 1904. For example, and in no way limiting the scope of the invention, the securing mechanism may be a plurality of nuts and bolts positioned along the outer edge of the platform cover 1902 and the upper portions of the plurality of build platform bodies 1904. In some exemplary embodiments, the securing mechanism is adapted to secure and seal the plurality of build platform bodies 1904 to prevent any material, such as photopolymer resin or other debris, from entering the plurality of build platform bodies 1904.

[0118] In some exemplary embodiments, a plurality of build platform bodies 1904 are arranged parallel to each other, and each of the plurality of build platforms may include a build surface 1903. In some exemplary embodiments, each build surface 1903 may be adapted to independently build 3D printed objects while being positioned on the same horizontal plane as each other build surface 1903 to facilitate the simultaneous creation of multiple 3D printed objects. In some exemplary embodiments, each build surface 1903 may be adapted to facilitate the polymerization of unique printing materials. For example, and in no way limiting the scope of the invention, each build surface 1903 may be adapted to facilitate the polymerization of unique photopolymer resins. In some exemplary embodiments, the material constituting the build platform 1904 may be hard anodized aluminum with a laser-etched pattern to optimize adhesion. In other exemplary embodiments, the build platform 1904 of the 3D printing kit may be composed of other materials known to those skilled in the art for optimizing adhesion.

[0119] Figure 21 An isometric side view of the platform of the 3D printing kit according to the present invention is shown, and further detailed views of the interior of the plurality of building platforms are shown. In some exemplary embodiments, as in Figure 21 As shown, the interior of a plurality of build platform bodies 1904 may include a temperature sensor 1905, an overheat protection device 1906, and a heating pad 1907, wherein the heating pad 1907 may be adapted to heat each of the plurality of build platform bodies 1904 to ensure a uniform temperature distribution during the printing process and to ensure more uniform heating of the photopolymer resin. In some exemplary embodiments, the heating pad 1907 may be further adapted to independently heat each of the plurality of build platform bodies 1904 based on the type of printing material used to print the 3D printed object.

[0120] In some exemplary embodiments, the heating pad 1907 may be adapted to reach a maximum temperature. For example, and in no way limiting the scope of the invention, the heating pad 1907 may be adapted to heat to a maximum temperature of 40°C. In some exemplary embodiments, the temperature sensor 1905 may be configured to dynamically monitor the heating temperature of each of the plurality of build platform bodies 1904 in real time. In some exemplary embodiments, the overheat protection device 1906 may be adapted to deactivate the heating pad 1907 when the temperature of the plurality of build platforms exceeds a specific threshold, to prevent the heating pad 1907 from malfunctioning due to excessively high temperatures or causing burns to the user.

[0121] Figure 22 An isometric side view of a plurality of cans of a 3D-printed kit according to the present invention is shown. In some exemplary embodiments, as in Figure 22As shown, each of the plurality of storage tanks 2003 may include a storage tank cover 2001, wherein each storage tank 2003 is adapted to sealably store printing material. In some exemplary embodiments, the storage tank cover 2001 may be removably positioned on top of each storage tank 2003. In some exemplary embodiments, the material of the storage tank cover 2001 may be rubber. For example, and in no way limiting the scope of the invention, the material of the storage tank cover 2001 may be thermoplastic polyurethane (TPU) or some other material having rubber and plastic properties. When the storage tank 2003 is in an idle state, the storage tank cover 2001 may be placed on top of the storage tank 2003 to prevent the printing material stored inside the storage tank 2003 from deteriorating due to exposure to air or light from the external environment. Each of the plurality of storage tanks 2000 is adapted to be independent of other storage tanks of the plurality of storage tanks 2000 and is adapted to store unique printing materials. For example, and in no way limiting the scope of the invention, each storage tank 2003 may store a unique photopolymer resin. In other exemplary embodiments, each storage tank 2003 of the plurality of storage tanks 2000 may store the same printing material. In some exemplary embodiments, the plurality of storage tanks 2000 may be a dual storage tank including a first storage tank and a second storage tank, the first storage tank storing a first printing material and the second storage tank storing a second printing material, wherein the first printing material and the second printing material are two different types of photopolymer resins.

[0122] Figure 23 An exploded view of one of a plurality of material reservoirs in a 3D printing kit according to the present invention is shown. In some exemplary embodiments, as in Figure 23As shown, each storage compartment 2003 may include a handle 2002, an RFID tag 2006, and a membrane 2007. In some exemplary embodiments, the handle 2002 may be positioned on the side of each storage compartment 2003 such that the handle 2002 faces the user and is adapted to facilitate user manipulation of the storage compartment 2003. In some exemplary embodiments, the RFID tag 2006 is located on the rear side of each storage compartment 2003, wherein the RFID tag 2006 is adapted to detect whether the storage compartment 2003 is connected to the adapter 2100 of the 3D printing kit according to the invention. In some exemplary embodiments, when the storage compartment 2003 is pushed into the adapter 2100, the RFID tag 2006 will connect to a reader 2102 located inside the rear side of the adapter 2100. The reader 2102 may be adapted to identify and read information stored in the RFID tag 2006, indicating that the storage compartment 2003 is connected to the adapter 2100. In some exemplary embodiments, the RFID tag 2006 may be writable and adapted to store relevant information about the storage tank 2003. For example, and in no way limiting the scope of the invention, the RFID tag 2006 may include information about the amount of printing material stored in the storage tank 2003, the type of printing material stored inside the storage tank 2003, and the number of remaining printing cycles.

[0123] In some exemplary embodiments, the storage tank also includes a membrane 2007 positioned at the bottom of the storage tank 2003. In some exemplary embodiments, the membrane 2007 may include a material that enhances durability and lifespan when exposed to highly corrosive printing materials. For example, and in no way limiting the scope of the invention, the membrane material may be ACF-5 to improve the lifespan of the storage tank 2003 suitable for storing highly corrosive photopolymer resins.

[0124] Figure 24 A rear view of the material reservoir of the 3D printing kit according to the present invention is shown. (As in...) Figure 24 As shown, each side of each storage tank 2003 includes an insertion space 2005 that mates with a protrusion 2103 of the base bracket of the adapter 2100. The protrusion 2103 extends into the mounting area of ​​the adapter for each storage tank 2003. Two positioning beads 2104 are positioned below the protrusion 2103 along the insertion / removal direction of the storage tank 2003. The positioning beads 2104 mate with grooves 2004 in the storage tank 2003, thereby securing the storage tank 2003 within the adapter 2100.

[0125] Alternatively, the positioning bead 2104 can be positioned above or on the side of the protrusion 2103, and the size and position of the positioning bead 2104 match the groove 2004 positioned above or on the side of the insertion space 2005 of the storage tank 2003. The number of positioning beads 2104 can be one or more. Alternatively, other mechanical structures capable of achieving position locking can be used instead of the positioning bead 2104. Preferably, the height of the insertion channel or space 2005 gradually converges along the insertion direction of the storage tank 2003; thus, it will be smoother when the storage tank is pushed in, providing a better tactile experience for the user. Furthermore, in an exemplary embodiment, the locking mechanism utilizes one or more grooves 2004, in which one or more (e.g., four) pawls provide a retaining force by downward compression to secure the storage tank in place. The insertion channel along the depth of the insertion space 2005 primarily serves as a guide to ensure proper alignment during can installation.

[0126] When the storage tank 2003 is pushed into the adapter 2100, the protrusion 2103 of the base bracket enters the insertion space 2005, and the eight positioning beads 2104 below the protrusion 2103 fall into the groove 2004 below the insertion space 2005. Additionally, when the positioning beads 2104 fall into the groove 2004, they emit an audible sound to alert the user that the storage tank 2003 is securely positioned.

[0127] In some exemplary embodiments, the bottom of the adapter 2100 is further equipped with two sets of hooks 2105 and 2106, located on the right and left sides of the adapter 2100, respectively. The two sets of hooks 2105 and 2106 are configured to secure the adapter 2100 to a 3D printing apparatus; for example, and without limiting the scope of the invention, these hooks can be attached to the body of the curing light engine of the 3D printer. Naturally, other connecting components can be employed, such as using similar or corresponding complementary geometries or surfaces on the adapter body that match and align with similar or corresponding complementary geometries or surfaces on the structure of the 3D printer. For example, in some exemplary embodiments, the adapter 2100 is adapted to be directly attached to the LCD cartridge of an existing 3D printer for which the kit 1830 can be used to retrofit the printer for multi-material printing according to the invention.

[0128] Figure 25 A top view of one of the multiple storage tanks, or storage tank 2003, is shown. Figure 26 It shows in Figure 25 The cross-sectional view at point AA. Figure 27 A cross-sectional view of multiple storage tanks in a stacked state is shown, and Figure 27-1The storage tank connected to adapter 2100 is shown. (As in...) Figure 27 As shown, two or more resin tanks or storage tanks 2003 having a storage tank cover 2001 can be configured such that they can be efficiently stored. For example, without limiting the scope of the invention, the storage tanks 2003 can be stackable to facilitate user storage and management. This can be achieved in various ways, including, for example, by implementing a suitable shape on the surface of the storage tank cover 2001. As shown in this view, a recessed shape can be formed on the top surface of the cover, with three ribs 2008 on each side of the recess (see also...). Figure 23 ).like Figures 24-27 As shown, when the storage tanks 2003 are stacked, the ribs 2008 are tangent to the bottom steel rings 2009 of the storage tanks 2003, and their shapes match or align, thus allowing the storage tanks to be firmly stacked. Then, as in Figure 27-1 As shown, the storage tanks can be separated, not stacked, and connected to adapter 2100 when in use.

[0129] Figure 28 An isometric side view of adapter 2100 is shown. Figure 29 A top view of adapter 2100 is shown, and Figure 30 It shows Figure 29 A cross-sectional view at point AA. In some exemplary embodiments, as in... Figure 22 As shown, the storage tank 2003 further includes a handle 2002, an RFID tag 2006, and a membrane 2007. The handle 2002 can be positioned on the side of the storage tank 2003, the handle 2002 can be positioned facing the user, and the handle 2002 should be configured to facilitate user operation of the storage tank 2003. As in Figure 23 As shown, the RFID tag 2006 is attached to the side of the storage tank 2003, in this case the rear or rear side, and the RFID tag 2006 is configured to detect whether the storage tank 2003 is connected to the adapter 2100. Specifically, when the storage tank 2003 is pushed into the adapter 2100, the RFID tag 2006 interacts with the reader 2102 located inside the rear side of the adapter 2100 (see...). Figure 30 The reader 2102 can identify and read information stored in the RFID tag 2006, instructing the storage tank 2003 to connect to the adapter 2100. Furthermore, the RFID tag 2006 is writable and can store relevant information about the storage tank 2003, such as the presence of photopolymer resin inside the storage tank 2003, the type of photopolymer resin, and the number of printing cycles.

[0130] Figures 31A-31BA rear bottom perspective view of adapter 2100 is shown. More specifically, these views further show the bottom structure of adapter 2100. Furthermore, as in... Figure 24 As shown, each side of the storage tank 2003 includes an insertion space 2005 that mates with a protrusion 2103 of the base bracket of the adapter 2100, as shown in Figure 28 As shown in the diagram, the protrusion 2103 extends into the assembly area of ​​the adapter for each reservoir 2003. Along the insertion / removal direction of the resin tank 2003, two positioning beads 2104 are positioned below the protrusion 2103, which allows for... Figure 31A and Figure 31B As can be seen, the positioning bead 2104 matches the groove 2004 of the resin tank 2003, thereby fixing the resin tank 2003 in the adapter 2100.

[0131] Figure 32 It shows in Figure 29 A cross-sectional view at point BB. In some exemplary embodiments, as in... Figure 32 As shown, the RFID tag 2107 is positioned inside the center of the rear side of the adapter 2100. The RFID tag 2107 is adapted to detect whether the adapter 2100 is connected to the 3D printing device. In some exemplary embodiments, when the RFID tag 2107 is connected to a reader on the 3D printing device, the reader can identify and read the information stored in the RFID tag 2107, indicating that the 3D printing device is connected to the adapter 2100.

[0132] Figure 33 An exemplary flowchart of RFID reading of an adapter for a 3D printing kit according to the present invention is shown. RFID tag 2006 is adapted to be writable and stores relevant information about its corresponding material reservoir 2003. Once activated by a Hall sensor, the MCU on adapter 2100 transitions from sleep mode to active state. RFID reader 2102 on adapter 2100 is then able to retrieve information from RFID tag 2107 attached to material reservoir 2003. If the retrieved information remains unchanged, the MCU returns to sleep mode. However, if a change is detected, the MCU first sets the active RFID tag 2107 to a silent state to prevent communication conflicts. It then writes the updated information to the active RFID tag 2107 and subsequently restores it to active state, thereby allowing the printer software to poll for this information. After this process is complete, the MCU re-enters sleep mode.

[0133] This invention has the following advantages: it allows simultaneous printing with different photopolymer resins; and it significantly improves printing efficiency, as shown in the tables below, where Table 1 shows the results using a conventional printer, and Table 2 shows the results using the device according to the invention:

[0134]

[0135]

[0136] As can be seen from Tables 1 and 2, using a dual-material kit can reduce printing time by 42%. This invention provides a printing apparatus for a dual-material kit, which can print simultaneously with two different photopolymer resins, significantly reducing total printing time and improving printing efficiency.

[0137] While this disclosure has been described with reference to exemplary embodiments, those skilled in the art will understand that various changes can be made and elements can be substituted with equivalents without departing from the scope of this disclosure. Furthermore, many modifications can be made to adapt a particular system, apparatus, or component thereof to the teachings of this disclosure without departing from the scope of this disclosure. Therefore, this disclosure is intended to be limited to the specific embodiments disclosed for implementing this disclosure, but rather to include all embodiments falling within the scope of the appended claims. Moreover, the use of the terms first, second, etc., does not indicate any order or importance, but rather is used to distinguish one element from another.

[0138] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. As used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It will be further understood that, when used in this specification, the terms “comprising” and / or “including” specify the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof.

[0139] The description of this disclosure has been given for purposes of illustration and description, but the disclosure in its form is not intended to be exhaustive or limiting. Many modifications and variations will be apparent to those skilled in the art without departing from the scope of this disclosure. The described embodiments were chosen and described in order to best explain the principles of this disclosure and its practical application, and to enable others skilled in the art to understand the various embodiments of this disclosure, as well as the various modifications suitable for the particular intended use.

Claims

1. A 3D printing system for modifying a 3D printer to print multiple 3D printed objects, comprising: A removable platform adapted for use with the 3D printer, the removable platform comprising multiple build surfaces; Multiple sealable storage tanks adapted to be aligned with the multiple build surfaces of the removable platform, wherein each sealable storage tank is adapted to store one or more types of printing materials; and An adapter, configured to attach the plurality of sealable material reservoirs to the 3D printer in such a manner that: Each of the plurality of sealable reservoirs is aligned with the curing light engine of the 3D printer, and Each of the plurality of sealable storage tanks is aligned with a corresponding construction surface among the plurality of construction surfaces of the removable platform.

2. The 3D printing system according to claim 1, wherein, The adapter is adapted to be attached to the body of the curing light engine of the 3D printer.

3. The 3D printing system according to claim 1, wherein, Each sealable storage compartment stores unique printing material.

4. The 3D printing system according to claim 1, wherein, Each build surface is adapted to build 3D printed objects independently, while being positioned on the same horizontal plane as each other build surface.

5. The 3D printing system according to claim 1, wherein, The construction surfaces are arranged parallel to each other.

6. The 3D printing system according to claim 1, wherein, The removable platform includes a temperature sensor inside.

7. The 3D printing system according to claim 1, wherein, The removable platform includes an overheat protection sensor inside.

8. The 3D printing system according to claim 1, wherein, The interior of the removable platform includes heating elements adapted to heat one or more of the constructed surfaces.

9. The 3D printing system according to claim 1, wherein, One or more storage troughs include handles.

10. The 3D printing system according to claim 1, wherein, The removable platform comprises hard anodized aluminum with a laser-etched pattern to optimize adhesion.

11. The 3D printing system according to claim 1, wherein, The storage tanks are stackable.

12. The 3D printing system according to claim 1, wherein, The storage tank includes a detection device configured to be detected by the 3D printer for detecting when the storage tank is connected to the 3D printer.

13. The 3D printing system according to claim 1, wherein, The detection device includes RFID tags.

14. The 3D printing system according to claim 1, wherein, The detection device may be writable and is adapted to store information about the storage tank, the printing material inside the storage tank, or the number of remaining printing cycles for each storage tank.

15. The 3D printing system according to claim 1, wherein, Each storage tank includes a membrane adapted to enhance durability when exposed to highly corrosive printing materials.

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