Three-dimensional printing method, device, apparatus, storage medium, and electronic device

Abstract

The application discloses a three-dimensional printing method, device, apparatus, storage medium and electronic device. The method comprises the following steps: determining wave band control information matched with printing material information; controlling a light source mechanism to perform a light emission operation on a printing area based on a wave band indicated by the wave band control information, so that at least part of the printing material forms a target three-dimensional object on a forming platform, wherein the light source mechanism can emit light of multiple wave bands. The application solves the technical problem that a three-dimensional printing device in the prior art is configured as a single-wave band light source and cannot adapt to printing requirements of cross use of multiple wave bands.

Description

Technical Field

[0001] This invention relates to the field of 3D printing technology, and more specifically, to a 3D printing method, apparatus, device, storage medium, and electronic device. Background Technology

[0002] 3D printing technology creates three-dimensional objects by layering data from a 3D model using 3D printing equipment. In 3D printing, DLP (Digital Light Processing) photopolymer 3D printers project light from a light source onto a bottom-lit material tray. This causes a polymerization reaction between the photopolymerizable material and the bottom of the tray, resulting in a solid 3D printed part formed by layer-by-layer curing. Precise matching between the photopolymerizable material and the UV wavelength of the printing equipment is crucial for ensuring optimal printing results.

[0003] Currently, 3D printers using related technologies are equipped with single-band light source systems, which can only adapt to materials of a specific wavelength. When attempting to use multiple materials of different wavelengths on the same device, the device often cannot accurately identify the wavelength of the material being used. This affects the curing process of the photocurable resin, reduces the forming accuracy of the 3D print, and may also cause abnormalities in material properties, thus affecting the final quality and reliability of the printed parts.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This invention provides a three-dimensional printing method, device, apparatus, storage medium, and electronic device to at least solve the technical problem in the related art where three-dimensional printing devices are configured with a single-band light source and cannot adapt to the printing requirements of using multiple bands simultaneously.

[0006] According to one aspect of the present invention, a three-dimensional printing method is provided, comprising: determining band control information matching printing material information; and controlling a light source mechanism to perform a light emission operation on a printing area based on the band indicated by the band control information, such that at least a portion of the printing material forms a target three-dimensional object on a forming platform, wherein the light source mechanism is capable of emitting light in multiple bands.

[0007] Optionally, determining the band control information that matches the printing material information includes: acquiring the printing data packet corresponding to the target three-dimensional object;

[0008] If the printed data packet includes the band control information, the band control information is read based on the printed data packet; and / or

[0009] If the printing data packet includes the printing material information, obtain band matching information indicating the matching relationship between the printing material and the corresponding band; determine the band control information based on the printing material information and the band matching information.

[0010] Optionally, determining the band control information matching the printing material information includes: determining a feeding mechanism that provides printing material to the printing area, and feeding information carried by the feeding mechanism; determining the printing material information based on the feeding information; obtaining band matching information indicating the matching relationship between the printing material and the corresponding band; and determining the band control information based on the printing material information and the band matching information.

[0011] Optionally, based on the band indicated by the band control information, the light source mechanism is controlled to perform a light emission operation on the printing area, including: based on the determined band control information, controlling the corresponding first light-emitting element or second light-emitting element to work to emit light; wherein, the light source mechanism includes at least a first light-emitting element and a second light-emitting element, and the first light-emitting element and the second light-emitting element emit light in different bands.

[0012] Optionally, the feeding mechanism carries the feeding information in at least one of the following ways: NFC module, Bluetooth module, RFID tag or electronic tag.

[0013] According to another aspect of the present invention, a three-dimensional printing apparatus is provided, applying any one of the three-dimensional printing methods, comprising: a forming platform for attaching a target three-dimensional object; a construction surface defining a printing area between the forming platform and the construction surface, the printing area being used to fill printing material; a controller communicatively connected to a light source mechanism for determining band control information matching the printing material information; the light source mechanism being capable of emitting light in multiple bands, the light source mechanism being configured to perform a light emission operation on the printing area based on the bands indicated by the band control information, such that at least a portion of the printing material forms the target three-dimensional object on the forming platform.

[0014] Optionally, the light source mechanism includes a light source component with multiple light-emitting elements, each of which emits light in different wavelengths; wherein, the light source mechanism is also used to control the multiple light-emitting elements to perform light emission operations on the printing area based on the wavelength indicated by the wavelength control information.

[0015] Optionally, the plurality of light-emitting elements are packaged in a linear arrangement and / or a matrix arrangement.

[0016] Optionally, the light source mechanism is provided with a movable optical path changing component, which is used to change the optical path trajectory of the light emitted by the light source mechanism; wherein, the controller is further used to determine a movement control strategy for the optical path changing component based on the band indicated by the band control information; the light source mechanism is further used to control the light source components included in the light source mechanism to emit light of the band indicated by the band control information to the printing area through the optical path changing component, based on the band indicated by the band control information.

[0017] Optionally, the optical path changing component executes the movement control strategy in at least one of the following ways: rotation mode, linear translation mode, and non-linear translation mode.

[0018] Optionally, when there are multiple light source mechanisms, each of the multiple light source mechanisms includes at least one light-emitting element corresponding to at least one wavelength band, and the at least one wavelength band belongs to the multiple wavelength bands; when there is a single light source mechanism, the single light source mechanism includes light-emitting elements corresponding to the multiple wavelength bands respectively.

[0019] Optionally, the light source mechanism further includes optical devices disposed on the target optical path, the optical devices including digital micromirror devices, silicon-based liquid crystal panels or transmissive liquid crystal panels.

[0020] According to another aspect of the present invention, a three-dimensional printing apparatus is provided, comprising: a strategy determination module for determining band control information matching printing material information; and a light emission control module for controlling a light source mechanism to perform a light emission operation on a printing area based on the band indicated by the band control information, such that at least a portion of the printing material forms a target three-dimensional object on a forming platform, wherein the light source mechanism is capable of emitting light in multiple bands.

[0021] According to another aspect of the present invention, a non-volatile storage medium is provided, the non-volatile storage medium storing a plurality of instructions adapted for loading by a processor and executing any one of the three-dimensional printing methods described herein.

[0022] According to another aspect of the present invention, an electronic device is provided, comprising: one or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement any one of the three-dimensional printing methods described above.

[0023] In this embodiment of the invention, band control information matching the printing material information is determined; based on the band indicated by the band control information, the light source mechanism is controlled to perform a light emission operation on the printing area, so that at least a portion of the printing material forms a target three-dimensional object on the forming platform. The light source mechanism is capable of emitting light in multiple bands. This achieves the goal of the light source mechanism supporting the emission of multiple bands of light, realizing the technical effect of controlling the emission of multiple bands of light in a single device to perform three-dimensional printing. This solves the technical problem in related technologies where three-dimensional printing equipment is configured with a single-band light source, making it unable to adapt to the printing requirements of using multiple bands simultaneously. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0025] Figure 1 This is a flowchart of an optional 3D printing method provided according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic flowchart of an optional 3D printing method provided according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of a first light-emitting combination of an optional three-dimensional printing device according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of a second light-emitting combination of an optional three-dimensional printing device provided according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of a third light-emitting combination of an optional three-dimensional printing device provided according to an embodiment of the present invention;

[0031] Figure 7 This is a first rotational schematic diagram of an optional three-dimensional printing device provided according to an embodiment of the present invention;

[0032] Figure 8 This is a second rotational schematic diagram of an optional three-dimensional printing device provided according to an embodiment of the present invention;

[0033] Figure 9 This is a third rotational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention;

[0034] Figure 10 This is a fourth rotational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention;

[0035] Figure 11 This is a fifth rotational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention;

[0036] Figure 12 This is a sixth rotational schematic diagram of an optional three-dimensional printing device provided according to an embodiment of the present invention;

[0037] Figure 13 This is a first translational schematic diagram of an optional three-dimensional printing device provided according to an embodiment of the present invention;

[0038] Figure 14 This is a second translational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention;

[0039] Figure 15 This is a third translational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention;

[0040] Figure 16 This is a fourth translational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention;

[0041] Figure 17 This is a schematic diagram of a fourth light-emitting combination of an optional three-dimensional printing device provided according to an embodiment of the present invention;

[0042] Figure 18 This is a schematic diagram of a fifth light-emitting combination of an optional three-dimensional printing device provided according to an embodiment of the present invention;

[0043] Figure 19 This is a schematic diagram of the sixth light-emitting combination of an optional three-dimensional printing device provided according to an embodiment of the present invention;

[0044] Figure 20 This is a schematic diagram of another light source mechanism provided according to an embodiment of the present invention;

[0045] Figure 21 This is a schematic diagram of yet another light source mechanism provided according to an embodiment of the present invention;

[0046] Figure 22 This is a schematic diagram of a three-dimensional printing apparatus according to an embodiment of the present invention.

[0047] The components include the following reference numerals: light source mechanism 10, printing area 11, forming platform 12, controller 13, light path changing component 20, first light path changing component 21, first light source component 31, second light source component 32, third light source component 33, second light path changing component 22, first light-emitting element 41, second light-emitting element 42, third light-emitting element 43, fourth light-emitting element 44, fifth light-emitting element 45, sixth light-emitting element 46, rotation axis 50, first axis 51, second axis 52, target light path 60, first lens assembly 61, second lens assembly 62, third lens assembly 63, relay lens 64, and optical device 70. Detailed Implementation

[0048] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0049] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0050] For ease of description, the following explains some of the nouns or terms used in the embodiments of this application:

[0051] UV (Ultraviolet) light is mainly used in photocuring by utilizing the radiation energy of ultraviolet light to induce specific photocurable materials to undergo chemical reactions such as polymerization and cross-linking, thereby completing the curing process.

[0052] A lens assembly is a combination of optical elements whose main function is to adjust the beam so that the divergence angle of the beam is minimized, that is, to achieve beam collimation.

[0053] A dichroic beam combiner, also called a dichroic mirror or beam combiner, is a filter whose main characteristic is that it can split light into transmitted or reflected light according to the designed wavelength. It allows almost complete transmission of light at transmitted wavelengths and almost complete reflection of light at reflected wavelengths. Dichroic mirrors have high reflectivity for beams below the cutoff wavelength and high transmittance for beams above the cutoff wavelength.

[0054] 3D printing technology can overcome special structural obstacles that are currently impossible to achieve with traditional machining, enabling the simplified production of arbitrarily complex structural parts. Current 3D printing technologies include stereolithography (SLA), digital light processing (DLP), liquid crystal display (LCD), fused deposition modeling (FDM), and selective laser sintering (SLS). Among these, DLP photopolymerization 3D printers use a light source to project light onto a bottom-lit material tray, causing a polymerization reaction between the curable material and the bottom of the tray, resulting in a cured sheet. This cured sheet adheres to the forming platform. By moving the forming platform away from the bottom of the tray while simultaneously projecting light intermittently or continuously onto the bottom of the tray, the material is cured layer by layer, and the stacked cured sheets ultimately form a three-dimensional solid-state printed part.

[0055] In the field of photopolymer 3D printing, UV light is a crucial trigger for the material curing reaction, requiring robust control and precise refinement of wavelength and energy requirements to achieve controllable material curing performance. Related technologies offer single-wavelength 3D printing systems, such as 385nm, 405nm, and 425nm, and also include dedicated materials for each corresponding wavelength. For instance, 385nm materials require 385nm 3D printing equipment, and 405nm materials require 405nm 3D printing equipment.

[0056] Materials of different wavelengths have their own advantages and disadvantages. If users want to use materials of different wavelengths, the relevant technology is limited to single-wavelength equipment. This means that in the case of multi-wavelength use, a 3D printing system of the corresponding wavelength must be added, which increases costs and also poses a possibility of misoperation.

[0057] To address the aforementioned problems, this invention provides a method embodiment for 3D printing. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0058] Figure 1 This is a flowchart of a three-dimensional printing method according to an embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps:

[0059] Step S102: Determine the band control information that matches the printing material information;

[0060] Step S104: Based on the band indicated by the band control information, control the light source mechanism to perform a light emission operation on the printing area, so that at least part of the printing material forms a target three-dimensional object on the forming platform, wherein the light source mechanism is capable of emitting light in multiple bands.

[0061] It is understandable that the printing material information indicates the material's characteristics, providing support for determining suitable wavelength control information and deciding which wavelengths of light are most conducive to the curing of the current material. Based on the selected wavelength control information, the light source mechanism is controlled to emit light of the corresponding wavelength to the printing area. This light source mechanism can emit multiple wavelengths of light and can be adjusted to match the printing needs of using multiple wavelengths of light in combination. This realizes a printing process from material characteristics to light control, improving printing efficiency and quality through intelligent wavelength matching and optimized light source control.

[0062] Optionally, the execution entity of the above-described 3D printing method can be any type of 3D printing device provided in the embodiments, such as the controller in the 3D printing device.

[0063] In one optional embodiment, determining band control information that matches the printing material information includes: acquiring a printing data packet corresponding to the target three-dimensional object; if the printing data packet includes band control information, reading the band control information based on the printing data packet; and / or if the printing data packet includes printing material information, acquiring band matching information indicating the matching relationship between the printing material and the corresponding band; and determining the band control information based on the printing material information and the band matching information.

[0064] It is understood that acquiring the printing data package corresponding to the target 3D object involves obtaining information such as slicing the 3D model into multiple 2D layers, as well as printing parameters for each layer. In one implementation, the printing data package includes band control information, which can be directly read. In this embodiment, during the preprocessing stage, optimal band control information has been preset based on material properties and embedded into the printing data package.

[0065] In other implementations, the print data packet includes print material information. Band matching information can be used to indicate the matching relationship between the print material and the corresponding band, thereby determining band control information. Band matching information allows understanding the response characteristics of different materials to different bands of light. This process ensures that the most suitable band of light is used during printing, improving print quality and efficiency while reducing the risk of print failures due to material mismatch. It also reduces the limitations on the print data packet, allowing the processing method to be determined using band matching information even without band control information.

[0066] Optionally, the aforementioned print data package may also include pre-processed files containing information such as material, layer thickness, and layer images.

[0067] Optionally, the above-mentioned light source mechanism can be used to emit UV light. The mapping relationship between printing material information and UV band, i.e., band matching information, can be represented as shown in Table 1. The switching of the light source mechanism can be used as band control information.

[0068] Table 1

[0069] Printing material information Band matching Control light source mechanism switching Material A 385nm (nanometer) Switch the band to 385nm Material B 405nm Switch the band to 405nm Material C 425nm Switch the band to 425nm

[0070] In one optional embodiment, determining band control information that matches the printing material information includes: determining a feeding mechanism that provides printing material to the printing area, and feeding information carried by the feeding mechanism; determining printing material information based on the feeding information; acquiring band matching information that indicates the matching relationship between the printing material and the corresponding band; and determining band control information based on the printing material information and the band matching information.

[0071] It is understandable that the feeding mechanism (such as a resin bottle) that provides printing material to the printing area carries feeding information during the 3D printing process. This feeding mechanism is responsible for delivering the printing material to the printing area as needed. The feeding information typically includes key attributes such as the type and composition of the material, which can support the subsequent determination of band control information.

[0072] Based on the feeding information carried by the feeding mechanism, the printing material information can be determined. Band matching information indicating the matching relationship between the printing material and the corresponding wavelength is obtained, enabling the determination of wavelength control information based on the response characteristics of different printing materials to different wavelengths of light. This step may involve complex logical judgments and algorithmic calculations to ensure that the selected wavelength can produce the optimal photochemical reaction with the currently used printing material, reducing the risk of printing failure due to material mismatch and ensuring that the wavelength of light during the printing process matches the printing material used.

[0073] It should be noted that the above method of determining printing material information using material supply information can be combined with the above two methods: the printing data package only contains printing material information without band control information, and the printing data package contains both printing material information and band control information. These two methods can be used as supplementary information to achieve automatic matching and identification of the printing data package, 3D printing material, and equipment. This enables automatic adaptation of multi-band materials to the same equipment and can provide closed-loop management and prompts for possible user errors.

[0074] Optionally, the feeding mechanism carries the feeding information through at least one of the following methods: NFC module, Bluetooth module, RFID tag, or electronic tag. In the storage / use device for 3D printing materials, electronic tags can be used to indicate the corresponding material UV band information.

[0075] Optionally, Figure 2 This is a schematic flowchart of a three-dimensional printing method according to an embodiment of the present invention, such as... Figure 2 As shown, in one optional implementation of the photopolymerization 3D printing process, the raw data needs to be processed by 3D printing preprocessing software to match the raw files with the 3D printing technology and equipment, converting the raw data into data recognizable by the corresponding 3D printing equipment for printing. Based on end-to-end UV band adaptation, the UV band information of the corresponding material needs to be added or labeled at the preprocessing or 3D printing equipment end.

[0076] The print data package includes pre-processed files and may also contain information such as material name, layer thickness, and layer images. One approach is to add material UV band information to the print data package. The 3D printer then matches and controls the UV light source band based on this material UV band information.

[0077] The second method involves marking the UV band information of different materials in the 3D printing equipment, and automatically matching and controlling the UV light source band according to the material name in the printing data package.

[0078] The third approach involves adding electronic tags to the storage / use device of 3D printing materials to indicate the corresponding UV band information of the materials. The device then reads the electronic information in the storage / use device to match and control the UV light source band.

[0079] The first and second methods mentioned above can be used in combination with the third method to achieve automatic matching and identification of the printing data package, 3D printing material, and equipment. This enables automatic adaptation of multi-band materials to the same equipment and provides closed-loop control and prompts for possible user errors.

[0080] Optionally, after obtaining the band control information, the light source mechanism is controlled to perform a light emission operation on the printing area, including: based on the determined band control information, controlling the corresponding first light-emitting element or second light-emitting element to work to emit light; wherein the light source mechanism includes at least a first light-emitting element and a second light-emitting element, and the first light-emitting element and the second light-emitting element emit light in different bands.

[0081] Through step S102, band control information matching the printing material information is determined; in step S104, based on the band indicated by the band control information, the light source mechanism is controlled to perform a light emission operation on the printing area, so that at least part of the printing material forms a target three-dimensional object on the forming platform. The light source mechanism can emit light in multiple bands. This achieves the goal of supporting the emission of light in multiple bands, realizing the technical effect of controlling the emission of multiple bands in a single device, and thus solving the technical problem in related technologies where 3D printing equipment configured with a single-band light source cannot adapt to the printing needs of using multiple bands simultaneously.

[0082] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0083] This invention also provides a three-dimensional printing device, which will be described below.

[0084] Figure 3 This is a schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention, applicable to any of the 3D printing devices described above, such as... Figure 3 As shown, the 3D printing equipment includes:

[0085] Forming platform 12 is used to attach the target three-dimensional object;

[0086] The forming platform 12 defines a printing area 11 between the forming surface and the forming surface, and the printing area 11 is used to fill printing material;

[0087] The controller 13 is communicatively connected to the light source mechanism 10 and is used to determine the band control information that matches the printing material information;

[0088] The light source mechanism 10 is capable of emitting light in multiple wavelengths. The light source mechanism 10 is used to perform light emission operations on the printing area 11 based on the wavelength indicated by the wavelength control information, so that at least part of the printing material forms a target three-dimensional object on the forming platform 12.

[0089] When 3D printing, you can first create a 3D model of the part to be printed, and then slice the 3D model of the part to be printed layer by layer. When printing, you can start from the first slice model. Based on the previous slice model that has been successfully printed, you can print each slice model in turn, and finally get a complete 3D model of the part to be printed, which is the final three-dimensional object. Figure 3 This is a schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention, such as... Figure 3 As shown, the device for forming a three-dimensional object provided in the embodiment of the present invention can generate a projection image according to the shape of each slice model when printing each slice model. The light source mechanism 10 can illuminate the projection image into the printing area 11 filled with printing material (polymerizable liquid). Under the illumination of the light emitted by the light source mechanism 10, the polymerizable liquid will solidify between the molding platform 12 and the construction surface to form a solid or semi-solid polymer that matches the projection image. At this time, the movement of the molding platform 12 can be controlled so that the solid or semi-solid polymer separates from the construction surface layer by layer. The above printing process is repeated to finally form the target three-dimensional object on the molding platform 12 according to at least part of the printing material.

[0090] The light-emitting mechanism involved in this invention can be any display component capable of displaying exposed image information in the art. Specifically, it can be a laser display device capable of displaying projected images, or a projection device capable of projecting projected images. For example, it can be any one or any combination of DLP projection module, LCD projection module, LCOS (Liquid Crystal On Silicon) projection module, OLED projection module, Micro-Led (micro light emitting diode) module, Mini-Led (mini light emitting diode) module, LCD module, OLED module, and SXRD (Silicon X-Tal Re-Flective Display) projection module. It can also be a Micro-OLED module or a Mini-OLED module.

[0091] The structural surface is the surface where light comes into contact with the polymerizable liquid, which can be a resin. For example... Figure 3As shown, when using a downward projection method for photopolymerization 3D printing, light shines through the bottom of the material tray onto the resin at the bottom of the tray, forming a cured layer between the molding platform 12 and the bottom of the material tray. In this case, the surface to be constructed can be the upper surface of the release film set at the bottom of the material tray. Alternatively, upward projection can also be used for photopolymerization printing, where light shines onto the resin from above. In this case, the surface to be constructed is the surface of the resin in contact with the light. It should be noted that the device provided by this invention for forming three-dimensional objects can employ any of the above projection methods.

[0092] It is understandable that the light source mechanism 10 is a key component in the 3D printing equipment, capable of emitting light in multiple different wavelengths. This gives the light source mechanism 10 high flexibility and versatility, allowing it to adapt to the printing material requirements of different wavelengths, thereby expanding the applicability of the equipment. Multiple wavelengths include at least two or more wavelengths; for example, the light source mechanism 10 can emit light in 2, 3, 4, or 5 wavelengths.

[0093] The controller 13 is connected to the light source mechanism 10 and is responsible for determining the band control information that matches the printing material information. During the printing process, the controller 13 acquires the band information of the printing material and formulates appropriate band control information accordingly. This ensures that the light source mechanism 10 can emit light that matches the printing material, thereby guaranteeing the smooth progress of the printing process and the quality of the printed parts. The light source mechanism 10 performs light emission processing on the printing area 11 according to the band indicated by the received band control information. The aforementioned printing area 11 is determined based on the forming platform 12 and the constructed surface. Through the precise control of the light source mechanism 10, the target three-dimensional object can be solidified layer by layer on the forming platform 12, ultimately obtaining a complete target three-dimensional object.

[0094] The 3D printing equipment configured as described above not only improves printing accuracy and material performance stability but also enhances its versatility and flexibility. Regardless of the wavelength of the printing material used, the equipment can automatically match the corresponding light wavelength to achieve high-quality 3D printing.

[0095] As an optional embodiment, the light source assembly included in the light source mechanism 10 is provided with multiple light-emitting elements, which are used to emit light of different wavelengths. The light source mechanism 10 is also used to control the multiple light-emitting elements to perform light emission operations on the printing area 11 based on the wavelength indicated by the wavelength control information.

[0096] It is understood that the light source mechanism 10 can emit light of different wavelengths through a specific light-emitting component package. The package contains light-emitting components for emitting light of different wavelengths, and each light source mechanism 10 can emit light of multiple wavelengths in a cross-coordinated manner. The aforementioned wavelengths are determined as needed based on actual requirements and application scenarios, and various light emission schemes can be constructed through arrangement and combination. During the printing process, the light source mechanism 10 performs light emission processing on the printing area 11. In order to adapt to the different effects of different wavelengths of light on the printing material, by precisely controlling the wavelength and emission intensity of the light, the printing quality and efficiency are improved, and more possibilities are provided for adapting to various application scenarios.

[0097] Optionally, Figure 4 This is a schematic diagram of a first light-emitting combination of an optional 3D printing device according to an embodiment of the present invention, such as... Figure 4 As shown, the first light-emitting element 41 and the second light-emitting element 42 are packaged together, or patched onto the same substrate, or closely attached together, and they share a set of first lens assembly 61. The first light-emitting element 41 and the second light-emitting element 42 can be lit separately, and after being collimated by the first lens assembly 61, they can directly enter the next set of target optical paths 60.

[0098] Optionally, Figure 5 This is a schematic diagram of a second light-emitting combination of an optional 3D printing device according to an embodiment of the present invention, as shown below. Figure 5 As shown, the first light-emitting element 41, the second light-emitting element 42, and the third light-emitting element 43 are packaged together, or patched onto the same substrate, or closely attached together, and they share a set of first lens assembly 61. The aforementioned first light-emitting element 41, second light-emitting element 42, and third light-emitting element 43 can be lit on demand, such as individually lit, partially lit, or fully lit.

[0099] In one alternative embodiment, multiple light-emitting elements are packaged in a linear arrangement and / or a matrix arrangement.

[0100] It is understandable that the multiple light-emitting elements included in the light source mechanism 10 can be packaged in a linear arrangement. This arrangement allows the light-emitting elements to be arranged sequentially in a straight line, facilitating control and positioning. Simultaneously, the linear arrangement also helps achieve uniform light distribution, thereby improving printing effect and quality. Alternatively, the multiple light-emitting elements can be packaged in a predetermined matrix arrangement. This matrix arrangement distributes the light-emitting elements according to specific rows and columns, forming a two-dimensional array. This arrangement not only increases the flexibility of the light source mechanism 10, enabling it to adjust the angle and intensity of light emission according to different printing needs, but also helps to achieve more complex printing effects and patterns.

[0101] It should be noted that in practical applications, the light source mechanism 10 can select a suitable packaging method according to specific printing requirements and environmental conditions. Random arrangement or other arrangements can also be used for packaging.

[0102] Optionally, when multiple light-emitting elements are provided in the light source mechanism 10, each of the light-emitting elements can be independently packaged and have a corresponding set of lens assemblies. Alternatively, some light-emitting elements can be independently packaged, while others can be packaged together, or mounted on the same substrate, or closely attached together, with the jointly packaged light-emitting elements sharing a set of lens assemblies. All light-emitting elements can also be packaged together, or mounted on the same substrate, or closely attached together, and share a set of lens assemblies. Any of the above packaging combinations can illuminate a single light-emitting element, partially illuminate light-emitting elements in different wavelength bands, or illuminate all light-emitting elements.

[0103] It should be noted that the light emitted by multiple light-emitting components sharing a set of lens assemblies can directly enter the next set of target optical paths 60 after being collimated by the lens assemblies, or it can be reflected by one or more optical path alteration components before entering the next set of target optical paths 60.

[0104] If there is an optical path changing component 20, then the method of entering or exiting the optical path provided in any of the above embodiments can be adopted, such as rotation, linear translation, non-linear translation, and other methods.

[0105] Optionally, if there are first light-emitting elements 41, third light-emitting elements 43, fourth light-emitting elements 44, fifth light-emitting elements 45, sixth light-emitting elements 46, and seventh light-emitting elements 47, they can be selected and arranged (no quantity limit, just an example). Figure 6 This is a schematic diagram of a third light-emitting assembly of an optional 3D printing device according to an embodiment of the present invention, such as... Figure 6 As shown, the first light-emitting element 41 and the third light-emitting element 43 can be arranged in a straight line in a 1*2 manner, or the first light-emitting element 41, the third light-emitting element 43, and the fourth light-emitting element 44 can be arranged in a straight line in a 1*3 manner, and so on.

[0106] The first light-emitting element 41, the third light-emitting element 43, the fourth light-emitting element 44, and the fifth light-emitting element 45 can be arranged in a 2*2 matrix in a grid pattern.

[0107] Alternatively, the first light-emitting element 41, the third light-emitting element 43, and the fourth light-emitting element 44 can be arranged in a 2*3 matrix, with the fifth light-emitting element 45, the sixth light-emitting element 46, and the seventh light-emitting element 47 forming the second row.

[0108] The first light-emitting element 41, the third light-emitting element 43, the fourth light-emitting element 44, the fifth light-emitting element 45, the sixth light-emitting element 46, and the seventh light-emitting element 47 can also be arranged in a U-shape or randomly within a predetermined range.

[0109] In an alternative embodiment, the rotation angle of the optical path changing component 20 can preferably be set to include a range of 45° to 180°.

[0110] In one optional embodiment, the light-emitting element can be of various types, such as LEDs, lasers, and other light-emitting semiconductor chips, or phosphors that can emit other wavelengths after being irradiated by light, or other light-emitting devices such as light bulbs / lasers / LEDs (Light Emitting Diodes) / laser irradiating phosphors, etc. The emitted light is filtered and coupled to the light outlet (target optical path) at this location.

[0111] In an optional embodiment, the light source mechanism 10 is provided with a movable optical path changing component 20, which is used to change the optical path trajectory of the light emitted by the light source mechanism 10. The controller 13 is further used to determine the movement control strategy of the optical path changing component 20 based on the band indicated by the band control information. The light source mechanism 10 is also used to control the light source components included in the light source mechanism 10 to emit light of the band indicated by the band control information to the printing area 11 through the optical path changing component 20, based on the band indicated by the band control information.

[0112] It is understood that the light source mechanism 10 is equipped with a movable optical path changing component 20, which allows the optical path trajectory of the light emitted by the light source mechanism 10 to be dynamically adjusted, thereby increasing the flexibility and accuracy of the equipment during the printing process. The controller 13 is responsible for determining the band control information that matches the printing material information, and based on this band control information, further determining the movement control strategy for the optical path changing component 20, guiding how the optical path changing component 20 moves so that the light can be projected onto the printing area 11 along a predetermined trajectory. The light source mechanism 10 then executes the movement control of the optical path changing component 20 according to the instructions of the controller 13. At the same time, the light source in the light source mechanism 10 is also controlled to ensure that the optical path changing component 20, which has executed the movement control strategy, emits light that matches the band indicated by the band control information to the printing area 11. By setting a movable optical path changing component 20 in the light source mechanism 10, the above-mentioned 3D printing equipment can achieve on-demand projection control of light in multiple bands during the printing process, which is beneficial to improving the adaptability of the 3D printing equipment to different printing needs.

[0113] Optionally, the aforementioned optical path changing component 20 can be of various types, and can be set as a reflector, dichroic light combiner, etc., according to the need to perform optical path changing.

[0114] In one alternative embodiment, the optical path changing component executes the motion control strategy in at least one of the following ways: rotation mode, linear translation mode, and non-linear translation mode.

[0115] It is understood that the aforementioned optical path changing component 20 supports various methods of executing movement control strategies to alter the optical path trajectory of the light emitted from the light source mechanism 10. By rotating one or more components within the optical path changing component 20, the direction of light propagation can be changed; by moving components within the optical path changing component 20 along a straight line, the light propagation path can be adjusted; non-linear translation allows components within the optical path changing component 20 to move along a specific curve or path, thereby adjusting the light propagation path. By supporting at least one of these methods of executing movement control strategies, the optical path changing component 20 can flexibly adjust the light propagation path according to different printing requirements and material properties, thus meeting more diverse printing needs.

[0116] Alternatively, the non-linear translation method can be used to print 3D objects with complex curved surface structures.

[0117] Optionally, Figure 7 This is a first rotational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention, as shown below. Figure 7 As shown, it includes an optical path changing component 20, a first lens assembly 61, a second lens assembly 62, a first light source assembly 31, a second light source assembly 32, a rotation axis 50, and a target optical path 60. The first light source assembly 31 includes a first light-emitting element 41 and a first lens assembly 61, and the second light source assembly 32 includes a second light-emitting element 42 and a second lens assembly 62, which can emit light of two different wavelengths.

[0118] The first light-emitting element 41 and the second light-emitting element 42 are placed orthogonally. When the first light-emitting element 41 is lit, the second light-emitting element 42 is turned off. The light path changing component 20 is not in the light path of the first light source component 31. The light emitted by the first light source component 31 is collimated by the lens component 21 and then directly enters the next set of target light paths.

[0119] When the second light source assembly 32 needs to be lit, the first light source assembly 31 is turned off, and the light path changing assembly 20 is rotated by a certain angle (indicated by the dashed box at the original position). For example, the rotation angle of the light path changing assembly 20 is 45°. The first light source assembly 31 and the second light source assembly 32 are placed orthogonally, and the first light-emitting element 41 faces the incident target light path 60. The light emitted by the second light-emitting element 42 is collimated by the second lens assembly 62 and then reflected by the light path changing assembly 20, so that it enters the next set of target light paths 60 with the same incident direction as the original first light-emitting element 41.

[0120] The optical path changing component 20 rotates around its axis. Figure 7 In the example shown, the rotation axis 50 is set perpendicular to the predetermined first plane, that is, perpendicular to the paper. The position of the rotation axis 50 is shown as the axis that intersects the initial position and the position after rotation. The actual direction and position of the optical path changing component 20 rotating around the rotation axis 50 are not fixed. The optical path changing component 20 will only rotate to the required optical path position when a certain light source needs to be reflected to the next set of target optical paths 60. When not needed, the optical path changing component 20 does not need to rotate to other positions and does not affect other light sources.

[0121] Optionally, the rotation axis 50, which is perpendicular to the paper surface, may not be located exactly on the edge of the light path changing component 20 near the first light-emitting element 41 and the second light-emitting element 42. It may also be located at the end away from the first light-emitting element 41 and the second light-emitting element 42, or it may pass through the interior of the light path changing component 20.

[0122] Figure 8 This is a second rotational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention, as shown below. Figure 8 As shown, the rotation axis 50, which is perpendicular to the predetermined first plane, is located at the end away from the first light-emitting element 41 and the second light-emitting element 42 and rotates.

[0123] Figure 9 This is a third rotational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention, such as... Figure 9 As shown, the rotation axis 50 is positioned inside the optical path changing component 20. The first light source component 31 and the second light source component 32 are placed opposite each other. When the first light-emitting element 41 is lit, the second light-emitting element 42 is turned off. The light emitted by the first light-emitting element 41 is collimated by the second lens component 62, and then the collimated light is reflected by the optical path changing component 20 into the next set of target optical paths 60.

[0124] When the second light-emitting element 42 needs to be lit, the first light-emitting element 41 is turned off, and the light path changing component 20 rotates to... Figure 5In the position shown in the right-hand diagram, the light emitted by the first light-emitting element 41 is collimated by the second lens assembly 62, and then reflected by the optical path changing assembly 20, entering the next set of target optical paths 60 in the same direction as the first light-emitting element 41. The rotation axis 50 is set in a predetermined first plane, that is, perpendicular to the paper, and is located between the first light source assembly 31 and the second light source assembly 32.

[0125] Optionally, the rotating shaft 50 can also cause the optical path changing component 20 to rotate in a direction perpendicular to a predetermined first plane, i.e., perpendicular to the paper surface. Figure 10 This is a fourth rotational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention, as shown below. Figure 10 As shown, the first light source component 31 and the second light source component 32 are placed orthogonally. When the first light source component 31 is lit, the second light source component 32 is turned off. The light path changing component 20 intervenes in the light path that is not in the first light source component 31. The light emitted by the first light source component 31 is collimated by the lens component 21 and then directly enters the next set of target light paths 60.

[0126] When the second light source component 32 needs to be lit, the first light source component 31 is turned off, and the light path changing component 20 rotates by a certain angle. The minimum rotation angle of the light path changing component 20 is determined according to the actual light-transmitting area and the position of the rotation axis 50, and the maximum rotation angle is 180°. Figure 10 In the example, it is assumed that the light is rotated 180°, with the first light source assembly 31 facing the incident target light path 60. The light emitted by the second light source assembly 32 is collimated by the lens assembly 21 and then reflected by the light path changing assembly 20, so that the light source enters the next set of target light paths 60 with the same incident direction as the original first light source assembly 31.

[0127] The optical path changing component 20 rotates around an axis 50, which is parallel to the plane of the paper and forms a certain angle with the light propagation axes of the first light source component 31 and the second light source component 32. The position of the rotation axis 50 is within a space where the distance between the first light source component 31 and the second light source component 32 is similar. The optical path changing component 20 only rotates to the optical path position when a certain light needs to be reflected to the next set of target optical paths. When not in use, the optical path changing component 20 does not need to rotate to other positions and does not affect other sets of light sources.

[0128] The rotation axis 50, which is set to be parallel to the direction of the paper, may not necessarily be located exactly at the edge of the light path changing component 20. It may also be located at the end away from the first light source component 31 and the second light source component 32, or it may pass through the interior of the light path changing component 20.

[0129] In one optional embodiment, the first light-emitting element 41 and the second light-emitting element 42 are arranged opposite to each other, and the first light-emitting element 41 and the second light-emitting element 42 are respectively placed orthogonally to the target light path 60. The light path changing component 20 is provided with a rotation axis 50 inside; or, the light path changing component 20 includes a first changing component 21 and a second changing component 22, and the rotation axis 50 includes a first axis 51 and a second axis 52. The first axis 51 is used for the first changing component 21 to rotate and move around the axis, and the second axis 52 is used for the second changing component 22 to rotate and move around the axis. The movement trajectory around the first axis 51 intersects the movement trajectory around the second axis 52.

[0130] It is understood that the first light-emitting element 41 and the second light-emitting element 42 are arranged opposite each other. By placing the first light-emitting element 41 and the second light-emitting element 42 orthogonally to the target light path 60, it can be ensured that the emitted light is perpendicular to the target light path, thus facilitating subsequent light path adjustment. A rotation axis 50 can be provided inside the light path changing component 20, which can rotate and move around the axis to adjust the propagation path of the light. Alternatively, when the light path changing component 20 includes a first changing component 21 and a second changing component 22, their rotation and movement can be controlled by setting a first axis 51 and a second axis 52 respectively. The movement trajectory around the first axis 51 intersects with the movement trajectory around the second axis 52. Through the above arrangement, the first changing component 21 and the second changing component 22 can work together to achieve multi-angle and multi-directional adjustment of the light.

[0131] Optionally, Figure 11 This is a fifth rotational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention, as shown below. Figure 11 As shown, the rotation axis 50, which is parallel to a predetermined first plane (i.e., parallel to the direction of the paper), is positioned at an end away from the first light-emitting element 41 and the second light-emitting element 42 and rotates thereon. The aforementioned optical path changing component 20 may include multiple components, namely a first changing component 21 and a second changing component 22. The first changing component 21 has its own rotation axis, namely the first axis 51, and the second changing component 22 has its own rotation axis, namely the second axis 52.

[0132] Figure 12 This is a sixth rotational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention, as shown below. Figure 12 As shown, the first light-emitting element 41 and the second light-emitting element 42 are placed facing each other. When the first light-emitting element 41 is lit, the second light-emitting element 42 is off. The rotation positions of the first changing component 21 and the second changing component 22 are as follows: Figure 12 As shown in the left figure, the light emitted by the first light-emitting element 41 is collimated by the first lens assembly 61, and then the first changing component 21 reflects the collimated light into the next set of target light paths 60.

[0133] When the second light-emitting element 42 needs to be lit, the first light-emitting element 41 is turned off. The first alteration component 21 and the second alteration component 22 rotate to the position shown in the right-hand screenshot. The light emitted by the second light-emitting element 42 is collimated by the second lens component 62, and then reflected by the second lens component 62, entering the next set of target light paths 60 in the same direction as the first light-emitting element 41. The first axis 51 corresponding to the first alteration component 21 and the second axis 52 corresponding to the second alteration component 22 are both perpendicular to a predetermined first plane, i.e., perpendicular to the paper surface, and can be set near the edges of the first alteration component 21 and the second alteration component 22. Figure 12 The position shown is only one of them; the first axis 51 and / or the second axis 52 may also be located at... Figure 12 Near the other edge shown. The first alteration component 21 and the second alteration component 22 rotate around their respective rotation axes to enter the optical path only when needed, and rotate out of the optical path when not needed. Only one alteration component can be in the optical path at a time.

[0134] In one optional embodiment, the first light-emitting element 41 and the second light-emitting element 42 are orthogonally arranged, the first light-emitting element 41 is placed opposite to the target light path 60, and the light path changing component 20 moves in a direction opposite to the second light-emitting element 42 within a first predetermined plane, wherein the first predetermined plane is the plane formed by the light emitted by the first light-emitting element 41 and the light emitted by the second light-emitting element 42; or, the light path changing component 20 is used to move in a direction perpendicular to the first predetermined plane.

[0135] It is understood that the first light-emitting element 41 and the second light-emitting element 42 are orthogonally arranged. Simultaneously, the first light-emitting element 41 is placed opposite to the target light path 60. The light path changing component 20 can move within a first predetermined plane along a direction opposite to the second light-emitting element 42. This first predetermined plane is the plane formed by the light emitted from the first light-emitting element 41 and the light emitted from the second light-emitting element 42. The light path changing component 20 can also move along a direction perpendicular to the first predetermined plane. This movement allows the light path changing component 20 to be adjusted in a direction perpendicular to the light-emitting surface of the light source component.

[0136] Alternatively, the optical path changing component 20 can also be implemented using a linear translation method. Figure 13 This is a first translational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention, such as... Figure 13 As shown, the first changing component 21 and the second changing component 22 are placed orthogonally. When the first light-emitting element 41 is lit, the second light-emitting element 42 is turned off. The light path changing component 20 is not in the light path of the first changing component 21. The light emitted by the first light-emitting element 41 is collimated by the first lens component 61 and then directly enters the next set of target light paths 60.

[0137] When the second light-emitting element 42 needs to be lit, the first light-emitting element 41 is turned off, and the optical path changing component 20 is moved into the optical path. The light emitted by the second light-emitting element 42 is collimated by the second lens component 62 and then reflected by the optical path changing component 20, so that the second light-emitting element 42 enters the next set of target optical paths 60 with the same incident direction as the first light-emitting element 41.

[0138] The optical path changing component 20 will only be translated to the optical path position when a certain light source needs to be reflected to the next set of target optical paths 60. When not needed, the optical path changing component 20 does not need to be translated to other positions, and it does not affect other sets of light sources. It should be noted that the above translation method can adopt a linear translation method or a non-linear translation method as needed.

[0139] Optionally, the optical path changing component 20, in addition to Figure 13 The example can be entered by translating the direction into the light path, or it can be entered along the direction perpendicular to the screen. The light path changing component 20 can be translated from the top or the bottom respectively. Figure 14 This is a second translational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention, as shown below. Figure 14 As shown, the optical path changing component 20 performs optical path changing by moving from the top into the light-transmitting area. Figure 15 This is a third translational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention, such as... Figure 15 As shown, the optical path changing component 20 performs optical path changing by moving from the bottom into the light-transmitting area.

[0140] In one optional embodiment, the first light-emitting element 41 and the second light-emitting element 42 are placed opposite each other, and the first light-emitting element 41 and the second light-emitting element 42 are respectively placed orthogonally to the target optical path 60. The optical path changing component 20 includes a first changing component 21 and a second changing component 22. The first changing component 21 moves along a first translational trajectory; the second changing component 22 moves along a second translational trajectory, wherein the first translational trajectory and the second translational trajectory intersect.

[0141] It can be understood that the first light-emitting element 41 and the second light-emitting element 42 are placed opposite each other, and the first light-emitting element 41 and the second light-emitting element 42 are respectively placed orthogonally to the target light path 60. The light path changing component 20 includes a first changing component 21 and a second changing component 22, which are respectively responsible for controlling the light emitted by different light sources. The first changing component 21 moves along a first translation trajectory, while the second changing component 22 moves along a second translation trajectory. Through the above arrangement, the two changing components can move on different paths, thereby realizing the multi-angle and multi-directional adjustment of the light.

[0142] Optionally, Figure 16 This is a fourth translational schematic diagram of an optional 3D printing device provided according to an embodiment of the present invention, as shown below. Figure 16 As shown, the first alteration component 21 and the second alteration component 22 are placed facing each other. When the first light-emitting element 41 is lit, the second light-emitting element 42 is turned off. After the first alteration component 21 moves into the light path of the first light-emitting element 41, the light emitted by the first light-emitting element 41 is collimated by the first lens component 61 and then reflected by the first alteration component 21 into the next set of target light paths 60.

[0143] When the second light-emitting element 42 needs to be lit, the first light-emitting element 41 is turned off, the first light-changing component 21 is moved out of the optical path, and the second light path changing component 22 is moved into the optical path. The light emitted by the second light-emitting element 42 is collimated by the second lens assembly 62 and then reflected by the second light path changing component 22, so that the reflected light enters the next set of target optical paths 60 with the same incident direction as the original first light-emitting element 41. The light path changing component 20 is only moved to the optical path position when a certain light source needs to be reflected into the next set of target optical paths; when not needed, the reflector needs to be moved to other positions without affecting the placement of other sets of reflectors. The above-mentioned translation method of the light path changing component 20, except... Figure 16 The linear translation shown can also include various non-linear translation methods such as right-angle turns.

[0144] In an optional embodiment, a third light source assembly 33 is further included, which includes a third light-emitting element 43. The third light-emitting element 43 is placed orthogonally to the first light-emitting element 41 and is arranged side by side with the second light-emitting element 42. The optical path changing assembly 20 includes a first changing assembly 21 and a second changing assembly 22. The first changing assembly 21 is used to control the light emitted by the first light-emitting element 41 and / or the second light-emitting element 42 to the relay lens 64. The relay lens 64 is disposed between the first changing assembly 21 and the second changing assembly 22. The second changing assembly 22 is used to control the light passing through the relay lens 64 and / or the light emitted by the third light-emitting element 43 to the target optical path 60.

[0145] It can be understood that the third light-emitting element 43 in the third light source assembly 33 is placed orthogonally to the first light-emitting element 41, and the third light-emitting element 43 is arranged side by side with the second light-emitting element 42. The optical path changing assembly 20 can be divided into a first changing assembly 21 and a second changing assembly 22, which work together to adjust the light emitted by different light sources. The first changing assembly 21 is mainly used to adjust the light emitted by the first light-emitting element 41 and / or the second light-emitting element 42 to the relay lens 64. The relay lens 64 can transmit the light adjusted by the first changing assembly 21 to the second changing assembly 22, realizing the transition and conversion of the optical path. The second changing assembly 22 is responsible for adjusting the light passing through the relay lens 64 and / or the light emitted by the third light-emitting element 43 to the target optical path 60. The second changing assembly 22 can not only adjust the light passing through the relay lens 64, but also directly control the light emitted by the third light-emitting element 43, so that it can accurately enter the target optical path 60.

[0146] Optionally, Figure 17 This is a schematic diagram of a fourth light-emitting assembly of an optional 3D printing device according to an embodiment of the present invention, as shown below. Figure 17 As shown, the first light source assembly 31 includes a first light-emitting element 41 and a first lens assembly 61; the second light source assembly 32 includes a second light-emitting element 42 and a second lens assembly 62; and the third light source assembly 33 includes a third light-emitting element 43 and a third lens assembly 63. The light path changing assembly 20 can be configured as a dichroic light combiner, wherein the first changing assembly 21 is used to combine the light emitted by the first light-emitting element 41 and the second light-emitting element 42, and the second changing assembly 22 is used to combine the light emitted by the first light-emitting element 41, the second light-emitting element 42, and the third light-emitting element 43. A relay lens 64 is provided to relay the light, allowing light to enter the target light path 60 as needed. It should be noted that the first changing assembly 21 and the second changing assembly 22 can enter or exit the light-transmitting area in any of the ways described in the above embodiments.

[0147] Optionally, Figure 18 This is a schematic diagram of a fifth light-emitting combination of an optional 3D printing device according to an embodiment of the present invention, as shown below. Figure 18As shown, the first light-emitting element 41 and the fourth light-emitting element 44 are packaged together, or mounted on the same substrate, or closely attached together, sharing a set of lens assemblies, such as sharing the first lens assembly 61. The second light-emitting element 42, however, is independently packaged, using the second lens assembly 62. The above packaging method is merely an example and can be configured as needed. The second light-emitting element 42 can be lit independently; when lit independently, the first light-emitting element 41 and the fourth light-emitting element 44 are off. The first light-emitting element 41 and the fourth light-emitting element 44 sharing the first lens assembly 61 can have only one of them lit, such as a chip in a certain wavelength band, or both can be lit simultaneously. When the independently packaged second light-emitting element 42 is lit, the light path changing component 20 that works with it enters the light path; when working with other light sources, the light path changing component 20 moves out of the light path. When the first light-emitting element 41 and the fourth light-emitting element 44, which share the first lens assembly 61, are lit, the optical path changing component 20 that cooperates with them enters the optical path, and the optical path changing component 20 that cooperates with the independently packaged third light-emitting element 43 moves out of the optical path. The way in which the optical path changing component 20 enters or moves out of the optical path can be any of the methods provided in the above embodiments, such as rotation, linear translation, non-linear translation, and other methods.

[0148] Optionally, Figure 19 This is a schematic diagram of the sixth light-emitting combination of an optional 3D printing device provided according to an embodiment of the present invention, as shown below. Figure 19 As shown, the light emitted by the first light-emitting element 41 and the second light-emitting element 42, which are encapsulated together, enters the next set of target light paths 60. The aforementioned light path changing component 20 can be configured in a non-fixed position, such as rotating into the light path or translating into the light path, or in a fixed manner.

[0149] In one alternative embodiment, the optical path changing component 20 is any one of the following: a reflector or a light combiner, wherein the difference between the peak wavelengths of the light emitted by the first light source component 31 and the second light source component 32 is greater than or equal to 0 nanometers.

[0150] It is understood that the light path changing component 20 can be a reflector or a light combiner. Both types of components can change the propagation path of light and can be set as needed. When the light path changing component 20 is a reflector, it changes the light path trajectory through reflection to ensure that the light emitted by different light source components can propagate along a predetermined path, thereby avoiding spectral overlap. Through this setting, the peak wavelength difference between the light emitted by the first light source component 31 and the second light source component 32 is 0 nanometers (i.e., the peak wavelengths are the same), and the effective separation of light can also be achieved through the reflection of the reflector, maintaining the light combining efficiency.

[0151] When the optical path changing component 20 is converted into a light combiner, it can be further converted into a dichroic light combiner. Utilizing the principle of dichroism, it allows light of a specific wavelength to pass through while reflecting or absorbing light of other wavelengths. In this way, the light combiner can ensure that the light emitted by different light source components does not interfere with each other during the light combining process. Similarly, even if the peak wavelengths of the first light source component 31 and the second light source component 32 are the same, the light combiner can still achieve effective separation and combining of light through its unique filtering characteristics.

[0152] Optionally, the aforementioned reflector is a device that reflects light, and can also be a wedge prism, a single isosceles right-angle prism, a double-cemented isosceles right-angle prism, a reflective bowl, a reflective lens, etc.

[0153] In one optional embodiment, the first light source assembly 31 and the second light source assembly 32 are respectively encapsulated with at least one light-emitting element and a lens assembly corresponding to a wavelength band. The light-emitting element corresponding to the wavelength band encapsulated in the first light source assembly 31 includes a first light-emitting element 41, and the light-emitting element corresponding to the wavelength band encapsulated in the second light source assembly 32 includes a second light-emitting element 42. The lens assembly is used to collimate the transmitted light.

[0154] It is understood that both the first light source assembly 31 and the second light source assembly 32 encapsulate at least one light-emitting element and lens assembly corresponding to a specific wavelength band. This optimizes the optical performance of the light source mechanism and improves the utilization rate and light combining efficiency of the light source. The first light source assembly 31 includes a first light-emitting element 41, while the second light source assembly 32 includes a second light-emitting element 42. These components can be selected and configured to meet different application requirements, ensuring that the light source mechanism can emit light in the required wavelength band. This flexible adaptation to multi-wavelength applications allows the light source mechanism to be suitable for different application scenarios. The introduction of the lens assembly collimates the light emitted by the light-emitting element, ensuring that the light propagates in a parallel or nearly parallel state. By providing collimation through the lens assembly, the propagation efficiency and utilization rate of light can be significantly improved, while reducing light scattering and loss.

[0155] In one optional embodiment, the light source mechanism further includes an optical device 70 disposed on the target optical path, the optical device 70 including a digital micromirror device, a silicon-based liquid crystal panel, or a transmissive liquid crystal panel.

[0156] like Figure 20 , Figure 21As shown, an optical device 70 is disposed in the target light path. The optical device 70 is configured to convert light into target light, which illuminates the liquid photosensitive material, causing the specific photosensitive material to solidify according to predetermined pattern information. In this embodiment, the optical device 70 can be a reflective light valve, such as a digital micromirror device (DMD) or a liquid crystal on silicon (LCOS) panel. In another embodiment, the optical device 70 can be a transmissive liquid crystal panel (LCD) or a component with the same function.

[0157] The optical path changing component 20 can be a reflector. Two reflectors are placed inside the device, each of which can rotate around an axis. The first light source component 31 and the second light source component 32 are respectively placed facing the reflectors. When the first light source component 31 is lit, other light sources are turned off. The reflectors reflect the emitted light into the corresponding optical path. The light emitted by the first light source component 31 is collimated by the optical lens group and reflected by the reflectors before illuminating the LCD screen to provide backlight for the LCD. When the second light source component 32 needs to be lit, other light sources are turned off. The reflector corresponding to the second light source component 32 rotates by a certain angle to reflect the emitted light into the corresponding optical path. The rotation angle of the reflectors is determined according to the angle between the light source and other optical paths. In this embodiment, it is a 90° rotation. The first light source component 31 and the second light source component 32 are placed orthogonally.

[0158] In this embodiment, the reflector rotates around an axis that is perpendicular to the screen. The axis position is the axis that intersects the initial and rotated axes. The actual direction and position of the reflector's rotation around the axis are not fixed. The reflector will only rotate to the light path position when a certain light source needs to be reflected to the LCD light path. When it is not needed, the reflector needs to be rotated to other positions without affecting other light sources.

[0159] In one optional embodiment, when there are multiple light source mechanisms 10, each of the multiple light source mechanisms 10 includes at least one light-emitting element corresponding to at least one wavelength band, and the at least one wavelength band belongs to multiple wavelength bands; when there is a single light source mechanism 10, the single light source mechanism 10 includes light-emitting elements corresponding to multiple wavelength bands respectively.

[0160] It is understandable that 3D printing equipment can be configured as a single-light engine or a multi-light engine, that is, multiple light source mechanisms 10 or a single light source mechanism 10. Each light source mechanism 10 can include one or more light source components, and the light source components can also have multiple light-emitting elements corresponding to different wavelengths.

[0161] This embodiment also provides a 3D printing apparatus for implementing the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the terms "module" and "apparatus" can refer to a combination of software and / or hardware that performs a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0162] According to embodiments of the present invention, an apparatus embodiment for implementing a three-dimensional printing method is also provided. Figure 22 This is a schematic diagram of a three-dimensional printing apparatus according to an embodiment of the present invention. The three-dimensional printing apparatus includes: a strategy determination module 2002 and a light emission control module 2004. The apparatus will be described below.

[0163] Strategy determination module 2002 is used to determine band control information that matches the printing material information;

[0164] The light emission control module 2004, connected to the strategy determination module 2002, is used to control the light source mechanism to perform light emission operations on the printing area based on the band indicated by the band control information, so that at least part of the printing material forms a target three-dimensional object on the forming platform, wherein the light source mechanism is capable of emitting light in multiple bands.

[0165] In a 3D printing device provided by this invention, a strategy determination module 2002 is used to determine band control information that matches the printing material information; a light emission control module 2004, connected to the strategy determination module 2002, is used to control the light source mechanism to perform light emission operations on the printing area based on the band indicated by the band control information, so that at least part of the printing material forms a target 3D object on the forming platform. The light source mechanism can emit light in multiple bands. This achieves the goal of the light source mechanism supporting the emission of multiple bands of light, realizing the technical effect of controlling the emission of multiple bands of light in a single device to perform 3D printing. This solves the technical problem in related technologies where 3D printing devices are configured with a single band light source and cannot adapt to the printing needs of using multiple bands simultaneously.

[0166] It should be noted that the above modules can be implemented by software or hardware. For example, for the latter, it can be implemented in the following ways: the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0167] It should be noted that the strategy determination module 2002 and the light emission control module 2004 mentioned above correspond to steps S102 to S104 in the embodiments. The instances and application scenarios implemented by the above modules and corresponding steps are the same, but are not limited to the content disclosed in the above embodiments. It should be noted that the above modules, as part of the device, can run in a computer terminal. It should be noted that the optional or preferred implementation methods of this embodiment can be found in the relevant descriptions in the embodiments, and will not be repeated here.

[0168] The aforementioned 3D printing device may further include a processor and a memory. The strategy determination module 2002, the light emission control module 2004, etc., are all stored as program units in the memory. The processor executes these program units stored in the memory to achieve the corresponding functions. The processor contains a kernel, which retrieves the corresponding program units from the memory. One or more kernels may be provided. The memory may include non-permanent memory in computer-readable media, random access memory (RAM), and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. The memory includes at least one memory chip.

[0169] This invention provides a non-volatile storage medium storing a program that, when executed by a processor, implements a 3D printing method.

[0170] This invention provides an electronic device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs the following steps: determining band control information matching printing material information; and controlling a light source mechanism to emit light to the printing area based on the band indicated by the band control information, so that at least a portion of the printing material forms a target three-dimensional object on the forming platform. The light source mechanism is capable of emitting light in multiple bands. The device described herein may be a server, PC, etc.

[0171] The present invention also provides a computer program product, which, when executed on a data processing device, is adapted to execute an initialization program having the following method steps: determining band control information matching printing material information; and controlling a light source mechanism to perform a light emission operation on the printing area based on the band indicated by the band control information, so that at least a portion of the printing material forms a target three-dimensional object on the forming platform, wherein the light source mechanism is capable of emitting light in multiple bands.

[0172] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0173] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0174] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0175] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0176] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory. Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0177] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0178] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0179] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0180] The above are merely embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A three-dimensional printing method, characterized in that, include: Determine the band control information that matches the printing material information; Based on the band indicated by the band control information, the light source mechanism is controlled to perform a light emission operation on the printing area, so that at least part of the printing material forms a target three-dimensional object on the forming platform. The light source mechanism includes at least a first light-emitting element and a second light-emitting element, which emit light of different bands. The first light-emitting element and the second light-emitting element are packaged together and share the same set of lens components. The step of controlling the light source mechanism to perform a light emission operation on the printing area based on the band indicated by the band control information includes: controlling the first light-emitting element to emit light in response to the first band control information indicating the first band; and switching to the second light-emitting element to emit light in response to the second band control information indicating the second band, wherein the switching does not require the intervention of the optical path changing component. Alternatively, in response to the band control information, some of the light-emitting components are controlled to emit light; Alternatively, in response to the band control information, all light-emitting elements can be controlled to emit light. The determination of the band control information that matches the printing material information includes the following methods: Obtain the printing data packet corresponding to the target 3D object; if the printing data packet includes the band control information, read the band control information based on the printing data packet; and / or if the printing data packet includes the printing material information, obtain band matching information indicating the matching relationship between the printing material and the corresponding band; determine the band control information based on the printing material information and the band matching information. The following steps are taken: 1) Determine a feeding mechanism that provides printing material to the printing area, and the feeding information carried by the feeding mechanism; 2) Determine the printing material information based on the feeding information; 3) Obtain band matching information indicating the matching relationship between the printing material and the corresponding band; 4) Determine the band control information based on the printing material information and the band matching information. By determining the band control information that matches the printing material information, automatic matching and identification of the printing data packet, printing material, and equipment can be achieved. This enables automatic adaptation of multiple band materials to the same equipment and provides closed-loop management and prompts for user errors.

2. The method according to claim 1, characterized in that, The switching to the second light-emitting element to emit light includes: activating the second light-emitting element and moving the optical path changing component to change the optical path of the light emitted by the second light-emitting element, wherein the optical path changing component moves in at least one of the following ways: rotation, linear translation, and non-linear translation.

3. The method according to claim 1, characterized in that, The feeding mechanism carries the feeding information in at least one of the following ways: NFC module, Bluetooth module, RFID tag or electronic tag.

4. A three-dimensional printing device, characterized in that, The three-dimensional printing method according to any one of claims 1 to 3 includes: A molding platform for attaching target three-dimensional objects; A construction surface is defined, and a printing area is defined between the forming platform and the construction surface, the printing area being used to fill printing material; The controller, which communicates with the light source mechanism, is used to determine the band control information that matches the printing material information; The light source mechanism is capable of emitting light in multiple wavelengths. The light source mechanism is used to perform a light emission operation on the printing area based on the wavelength indicated by the wavelength control information, so that at least a portion of the printing material forms the target three-dimensional object on the forming platform. The light source mechanism includes at least a first light-emitting element and a second light-emitting element, which emit light in different wavelengths. The first light-emitting element and the second light-emitting element are packaged together and share the same set of lens components. The light source mechanism is further configured to control the first light-emitting element to emit light in response to the first band control information indicating the first band; and to switch to the second light-emitting element to emit light in response to the second band control information indicating the second band, wherein the switching does not require the intervention of the optical path changing component; or, to control some light-emitting elements to emit light in response to the band control information; or, to control all light-emitting elements to emit light in response to the band control information. The controller is further configured to: Obtain the printing data packet corresponding to the target 3D object; if the printing data packet includes the band control information, read the band control information based on the printing data packet; and / or if the printing data packet includes the printing material information, obtain band matching information indicating the matching relationship between the printing material and the corresponding band; determine the band control information based on the printing material information and the band matching information. The following steps are taken: 1) Determine a feeding mechanism that provides printing material to the printing area, and the feeding information carried by the feeding mechanism; 2) Determine the printing material information based on the feeding information; 3) Obtain band matching information indicating the matching relationship between the printing material and the corresponding band; 4) Determine the band control information based on the printing material information and the band matching information. By determining the band control information that matches the printing material information, automatic matching and identification of the printing data packet, printing material, and equipment can be achieved. This enables automatic adaptation of multiple band materials to the same equipment and provides closed-loop management and prompts for user errors.

5. The three-dimensional printing equipment according to claim 4, characterized in that, Multiple light-emitting components are packaged in a linear arrangement and / or a matrix arrangement.

6. The three-dimensional printing device according to claim 4, characterized in that, The light source mechanism is equipped with a movable optical path changing component, which is used to change the optical path trajectory of the light emitted by the light source mechanism. The controller is also configured to determine a movement control strategy for the optical path changing component based on the band indicated by the band control information. The light source mechanism is also used to control the light source components included in the light source mechanism to emit light of the wavelength indicated by ...

7. The three-dimensional printing equipment according to claim 6, characterized in that, The optical path changing component executes the movement control strategy in at least one of the following ways: rotation mode, linear translation mode, and non-linear translation mode.

8. The three-dimensional printing device according to claim 4, characterized in that, The light source mechanism also includes optical devices disposed on the target optical path, including digital micromirror devices, silicon-based liquid crystal panels, or transmissive liquid crystal panels.

9. A non-volatile storage medium, characterized in that, The non-volatile storage medium stores multiple instructions adapted for loading and execution by a processor of the 3D printing method according to any one of claims 1 to 3.

10. An electronic device, characterized in that, include: One or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement the three-dimensional printing method according to any one of claims 1 to 3.

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