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

Abstract

The present disclosure discloses a three-dimensional printing method, device, and apparatus, a storage medium, and an electronic device. The method comprises: determining waveband control information matching printing material information; on the basis of a waveband indicated by the waveband control information, controlling a light source mechanism to perform a light emission operation over a printing area, so that at least part of the printing material forms a target three-dimensional object on a forming platform, wherein the light source mechanism is capable of emitting light of multiple wavebands. The present disclosure solves the technical problem in the prior art that three-dimensional printing devices equipped with a single-band light source cannot meet printing requirements that cross-utilize multiple wavebands.

Description

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

[0001] Related applications

[0002] The present disclosure claims priority to the Chinese application with the application number 202410457748.8 and the publication name "Three-dimensional printing method, device, apparatus, storage medium and electronic device" filed on April 16, 2024. The entire content of which is hereby incorporated by reference into the present disclosure. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of three-dimensional printing, in particular, to a three-dimensional printing method, device, apparatus, storage medium and electronic device. BACKGROUND

[0004] 3D (Three-Dimensional, i.e. three-dimensional) printing technology is to manufacture a three-dimensional entity in a layer-by-layer manner according to three-dimensional model data of the object through a 3D printing device. In the 3D printing technology, a DLP (Digital Light Processing) light-cured 3D printer can use a light source to project light to a material tray that is transparent at the bottom, so that the photopolymerizable material between the forming platform and the bottom of the material tray undergoes a polymerization reaction, and through layer-by-layer curing, the stacked cured sheet material eventually forms a three-dimensional solid printed part. It can be understood that the light-cured material is precisely matched with the UV (Ultraviolet) band of the printing device to ensure the printing effect.

[0005] At present, the 3D printer provided in the related technology is configured with a single-band light source system, which can only adapt to materials of a specific band. When multiple different band materials are cross-used on the same device, the device often cannot accurately identify the material band used, resulting in that the curing process of the light-cured resin material is affected, the forming precision of 3D printing is reduced, and the material performance may also be abnormal, thereby affecting the final quality and reliability of the printed part.

[0006] In view of the above problems, no effective solution has been proposed so far.

[0007] SUMMARY

[0008] The embodiments of the present disclosure provide a three-dimensional printing method, device, apparatus, storage medium and electronic device to at least solve the technical problem that the three-dimensional printing device in the related technology is configured with a single-band light source and cannot adapt to the printing demand of cross-use of multiple bands.

[0009] According to an aspect of some embodiments of the present disclosure, a three-dimensional printing method is provided, including: determining waveband control information matched with printing material information; and controlling a light source mechanism to perform a light emission operation on a printing area based on a waveband indicated by the waveband 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 is capable of emitting light of multiple wavebands.

[0010] Optionally, determining the waveband control information matched with the printing material information includes: obtaining a printing data packet corresponding to the target three-dimensional object.

[0011] In a case where the waveband control information is included in the printing data packet, the waveband control information is read according to the printing data packet; and / or

[0012] In a case where the printing material information is included in the printing data packet, waveband matching information indicating a matching relationship between the printing material and a corresponding waveband is obtained; and the waveband control information is determined based on the printing material information and the waveband matching information.

[0013] Optionally, determining the waveband control information matched with the printing material information includes: determining a feeding mechanism for providing the printing material for the printing area, and feeding information carried by the feeding mechanism; determining the printing material information based on the feeding information; obtaining waveband matching information indicating a matching relationship between the printing material and a corresponding waveband; and determining the waveband control information based on the printing material information and the waveband matching information.

[0014] Optionally, controlling the light source mechanism to perform the light emission operation on the printing area based on the waveband indicated by the waveband control information includes: controlling a corresponding first light emitting component or a second light emitting component to emit light based on the determined waveband control information; wherein the light source mechanism includes at least the first light emitting component and the second light emitting component, and the first light emitting component and the second light emitting component are configured to emit light of different wavebands.

[0015] Optionally, the feeding mechanism carries the feeding information in at least one of the following manners: an NFC module, a Bluetooth module, an RFID tag, or an electronic tag.

[0016] According to another aspect of some embodiments of the present disclosure, a three-dimensional printing device is provided, which applies any one of the three-dimensional printing methods, including: a forming platform configured to attach a target three-dimensional object; a construction surface, the forming platform and the construction surface defining a printing area therebetween, the printing area being configured to be filled with a printing material; a controller in communication connection with a light source mechanism, and configured to determine waveband control information matched with printing material information; and the light source mechanism being capable of emitting light of multiple wavebands, and being configured to perform a light emission operation on the printing area based on a waveband indicated by the waveband control information, so that at least part of the printing material forms the target three-dimensional object on the forming platform.

[0017] Optionally, the light source assembly included in the light source mechanism is provided with a plurality of light emitting pieces, and the plurality of light emitting pieces are respectively configured to emit light rays of different wave bands; and the light source mechanism is further configured to control the plurality of light emitting pieces to perform the light ray emitting operation on the printing area based on the wave band indicated by the wave band control information.

[0018] Optionally, the plurality of light emitting pieces are packaged in a linear arrangement manner and / or a matrix arrangement manner.

[0019] Optionally, the light source mechanism is provided with a movable light path changing assembly, and the light path changing assembly is configured to change a light path trajectory of the light rays emitted by the light source mechanism; the controller is further configured to determine a movement control strategy of the light path changing assembly based on the wave band indicated by the wave band control information; and the light source mechanism is further configured to control the light source assembly included in the light source mechanism to emit the light rays of the wave band indicated by the wave band control information to the printing area through the light path changing assembly based on the wave band indicated by the wave band control information.

[0020] Optionally, the light path changing assembly performs the movement control strategy in at least one of the following manners: a rotating manner, a linear translation manner, and a non-linear translation manner.

[0021] Optionally, in a case where the light source mechanism is multiple, the multiple light source mechanisms respectively include at least one light emitting piece corresponding to at least one wave band, and the at least one wave band belongs to a plurality of wave bands; and in a case where the light source mechanism is single, the single light source mechanism includes a plurality of light emitting pieces corresponding to a plurality of wave bands respectively.

[0022] Optionally, the light source mechanism further includes an optical device arranged on a target light path, and the optical device includes a digital micromirror device, a liquid crystal on silicon panel, or a transmission liquid crystal panel.

[0023] According to another aspect of the embodiments of the present disclosure, a three-dimensional printing device is provided, including: a strategy determination module configured to determine wave band control information matched with printing material information; and a light emitting control module configured to control a light source mechanism to perform a light ray emitting 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 is capable of emitting light rays of a plurality of wave bands.

[0024] According to another aspect of the embodiments of the present disclosure, a non-volatile storage medium is provided, and the non-volatile storage medium stores a plurality of instructions, and the instructions are adapted to be loaded and executed by a processor to implement any one of the three-dimensional printing methods.

[0025] According to another aspect of the embodiments of the present disclosure, an electronic device is provided, including: one or more processors and a memory, the memory is configured to store one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement any one of the three-dimensional printing methods.

[0026] According to another aspect of the embodiments of the present disclosure, there is provided a three-dimensional printing device, comprising: a light source mechanism configured to provide light rays for solidifying a printing material; and a forming platform, wherein the printing material is adhered to the forming platform, wherein the light source mechanism comprises a first light emitting unit and a second light emitting unit, the first light emitting unit is configured to emit light rays of a first wavelength, and the second light emitting unit is configured to emit light rays of a second wavelength different from the first wavelength.

[0027] In some embodiments, the light source mechanism further comprises a light path changing component configured to change a light path of the light rays emitted by the light source mechanism.

[0028] In some embodiments, the light path changing component is switchable between a first state and a second state, in the first state, the light path changing component is configured to change the light path of the light rays emitted by the first light emitting unit, and in the second state, the light path changing component is configured to change the light path of the light rays emitted by the second light emitting unit.

[0029] In some embodiments, the light path changing component is switchable between the first state and the second state in a rotating or translational manner.

[0030] In some embodiments, the light source mechanism further comprises a lens component configured to collimate the light rays.

[0031] In some embodiments, the three-dimensional printing device further comprises an optical detection mechanism configured to detect at least one of the light intensity or uniformity of the light rays from the light source mechanism. In some embodiments, the optical detection mechanism is arranged on a tray of the three-dimensional printing device.

[0032] In some embodiments, the optical detection mechanism is arranged between the light source mechanism and a tray of the three-dimensional printing device. The optical detection mechanism comprises, for example, an optical sensor.

[0033] In some embodiments, the difference between the first wavelength and the second wavelength is 10 nm to 60 nm.

[0034] According to another aspect of the embodiments of the present disclosure, there is provided a three-dimensional printing method, comprising: receiving information of a first wavelength associated with a first material; based on the information of the first wavelength, emitting light rays of the first wavelength to solidify the first material; receiving information of a second wavelength associated with a second material; based on the information of the second wavelength, emitting light rays of the second wavelength to solidify the second material. The information of the first wavelength associated with the first material can comprise, for example, any wavelength within a range.

[0035] In some embodiments, the information of the first wavelength associated with the first material is obtained from a supply mechanism for the first material, and / or the information of the second wavelength associated with the second material is obtained from a supply mechanism for the second material.

[0036] In some embodiments, the information of the first wavelength associated with the first material is obtained from a set of printing parameters associated with the first material, and / or the information of the second wavelength associated with the second material is obtained from a set of printing parameters associated with the second material.

[0037] In some embodiments, the three-dimensional printing method further comprises: determining that the first material is a material to be solidified, and determining the first wavelength adapted to the first material; and / or determining that the second material is a material to be solidified, and determining the second wavelength adapted to the second material.

[0038] In some embodiments, the three-dimensional printing method further comprises: detecting at least one of the light intensity or the uniformity of the light after emitting the light of the first wavelength or the second wavelength.

[0039] In some embodiments, the difference between the first wavelength and the second wavelength is 10nm-60nm.

[0040] In the embodiments of the present disclosure, the wavelength band control information matched with the printing material information is determined; the light source mechanism is controlled to perform the light emission operation on the printing area based on the wavelength band indicated by the wavelength 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 can emit light of multiple wavelength bands. The purpose of the light source mechanism supporting the emission of light of multiple wavelength bands is achieved, the technical effect of controlling the emission of light of multiple wavelength bands in a single device to perform three-dimensional printing is achieved, and the technical problem in the related art that the three-dimensional printing device is configured as a single-wavelength light source and cannot adapt to the printing requirements of cross-use of multiple wavelength bands is solved. BRIEF DESCRIPTION OF DRAWINGS

[0041] The accompanying drawings, which are included to provide a further understanding of the present disclosure and constitute a part of this application, illustrate certain illustrative embodiments of the present disclosure and are used to explain the present disclosure, but do not limit the present disclosure. In the drawings:

[0042] FIG. 1 is a flowchart of an optional three-dimensional printing method according to an embodiment of the present disclosure;

[0043] FIG. 2 is a schematic flowchart of an optional three-dimensional printing method according to an embodiment of the present disclosure;

[0044] FIG. 3 is a schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0045] FIG. 4 is a first light-emitting combination schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0046] Fig. 5 is a second light-emitting combination schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0047] Fig. 6 is a third light-emitting combination schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0048] Fig. 7 is a first rotation schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0049] Fig. 8 is a second rotation schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0050] Fig. 9 is a third rotation schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0051] Fig. 10 is a fourth rotation schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0052] Fig. 11 is a fifth rotation schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0053] Fig. 12 is a sixth rotation schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0054] Fig. 13 is a first translation schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0055] Fig. 14 is a second translation schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0056] Fig. 15 is a third translation schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0057] Fig. 16 is a fourth translation schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0058] Fig. 17 is a fourth light-emitting combination schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0059] Fig. 18 is a fifth light-emitting combination schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0060] Fig. 19 is a sixth light-emitting combination schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure;

[0061] Fig. 20 is a schematic diagram of another light source mechanism according to an embodiment of the present disclosure;

[0062] Fig. 21 is a schematic diagram of still another light source mechanism according to an embodiment of the present disclosure;

[0063] Fig. 22 is a schematic diagram of a three-dimensional printing device according to an embodiment of the present disclosure.

[0064] Wherein, including the reference signs: light source mechanism 10, printing area 11, forming platform 12, controller 13, light path changing assembly 20, first light path changing assembly 21, first light source assembly 31, second light source assembly 32, third light source assembly 33, second light path changing assembly 22, first light emitting piece 41, second light emitting piece 42, third light emitting piece 43, fourth light emitting piece 44, fifth light emitting piece 45, sixth light emitting piece 46, rotating shaft 50, first shaft 51, second shaft 52, target light path 60, first lens assembly 61, second lens assembly 62, third lens assembly 63, relay lens 64, optical device 70. DETAILED DESCRIPTION

[0065] In order to make the personnel in the technical field better understand the present disclosure scheme, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present disclosure.

[0066] It should be noted that the terms "first", "second" and the like in the specification and claims of the present disclosure and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0067] For the convenience of description, the following describes some nouns or terms related to the embodiments of the present application:

[0068] UV light, the application of UV light in photocuring mainly reflects in using the radiation energy of ultraviolet to promote the chemical reaction of specific photocuring materials such as polymerization and crosslinking, so as to complete the curing process.

[0069] Lens assembly is a combination of optical elements, its main function is to adjust the light beam, so that the divergence angle of the light beam reaches the minimum, that is, to realize the collimation of the light beam.

[0070] Dichroic combiner, also called dichroic mirror or combiner, the main feature of this filter is that it can split light into transmitted or reflected light according to the design wavelength. For the transmitted wavelength light, it can be almost completely transmitted; and for the reflected wavelength light, it can be almost completely reflected. Dichroic mirror has high reflectivity for light beams below the cutoff wavelength, and high transmissivity for light beams above the cutoff wavelength.

[0071] 3D printing technology can overcome the special structure barrier that cannot be achieved by current traditional mechanical processing, and realize the simple production of any complex structure parts. Current 3D printing technologies include stereolithography (SLA), digital light processing molding (DLP), liquid crystal display technology (LCD), fused deposition modeling (FDM), selective laser sintering (SLS), etc. Among them, the DLP light curing 3D printer can use a light source to project light to the bottom of the tray, so that the light-curable material between the forming platform and the bottom of the tray undergoes a polymerization reaction to obtain a solidified sheet material, which is bonded to the forming platform. By making the forming platform away from the bottom of the tray, and at the same time making the light source intermittently or uninterruptedly project light source to the bottom of the tray, the solidified sheet material is gradually cured and stacked to finally form a three-dimensional solid printed part.

[0072] In the field of light-curing 3D printing, UV light is the key trigger condition for material curing reaction, and needs to be controlled in terms of waveband, energy and other parameters to achieve controllable material curing performance. The 3D printing systems provided in the related art have a single waveband or wavelength, such as 385nm (nanometer), 405nm, 425nm, etc., and there are also corresponding waveband or wavelength specific materials. For example, 385nm waveband materials need to match 385nm waveband 3D printing equipment, and 405nm waveband materials need to match 405nm waveband 3D printing equipment. The term "waveband" in the present disclosure refers to the wavelength of light emitted by the light-emitting unit of the 3D printing equipment fluctuating within a very small range (e.g. ±3nm), for example, the rated wavelength of 385nm of light emitted by the light-emitting unit actually varies between 382nm and 388nm, which is due to the inherent nature of the light-emitting unit. The term "wavelength" in the present disclosure refers to the desired wavelength or rated wavelength of light emitted by the light-emitting unit of the 3D printing equipment, without considering the deviation caused by equipment errors.

[0073] Different waveband materials have their own advantages and disadvantages. Users want to use different waveband materials. However, due to the single waveband equipment of the related technology, the use of multiple wavebands is limited, and the corresponding 3D printing system of the waveband must be added. In addition to increasing the cost, there is also the possibility of misoperation.

[0074] To solve the above problems, the embodiment of the present disclosure provides a three-dimensional printing method. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0075] FIG. 1 is a flowchart of a three-dimensional printing method according to an embodiment of the present disclosure. As shown in FIG. 1, the method includes the following steps:

[0076] Step S102, determining waveband control information matched with the printing material information;

[0077] Step S104, based on the waveband indicated by the waveband control information, controlling the light source mechanism to perform 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 can emit light of multiple wavebands.

[0078] It can be understood that according to the characteristic information of the printing material indicated by the printing material information, the suitable waveband control information is determined, which determines which waveband of light is most beneficial to the curing of the current material. Based on the selected waveband control information, the light source mechanism emits light of the corresponding waveband on the printing area. The above-mentioned light source mechanism can emit light of multiple wavebands, and can be adjusted to match the printing requirements of cross-use of multiple waveband light. The printing process from material characteristics to light control is realized, and the printing efficiency and quality are improved through intelligent matching of wavebands and optimization of light source control.

[0079] Optionally, the execution subject of the above-mentioned three-dimensional printing method can be any one of the three-dimensional printing devices provided in the embodiments, such as the controller in the three-dimensional printing device.

[0080] In an optional embodiment, determining the waveband control information matched with the printing material information includes: obtaining a printing data packet corresponding to the target three-dimensional object; in the case that the waveband control information is included in the printing data packet, reading the waveband control information according to the printing data packet; and / or in the case that the printing material information is included in the printing data packet, obtaining waveband matching information indicating the matching relationship between the printing material and the corresponding waveband; determining the waveband control information based on the printing material information and the waveband matching information.

[0081] It can be understood that the printing data packet corresponding to the target three-dimensional object is obtained, and the printing data packet contains information for slicing the three-dimensional model into multiple two-dimensional layers, and various information such as printing parameters of each layer. In an embodiment, the printing data packet contains band control information, which can be directly read. In this embodiment, in the preprocessing stage, the optimal band control information is preset according to the material characteristics and embedded in the printing data packet.

[0082] In other embodiments, the printing data packet contains printing material information, and the matching relationship between the printing material and the corresponding band can be indicated based on the band matching information, so as to determine the band control information. Through the band matching information, the response characteristics of different materials to different band light can be understood. Through the above processing, the most suitable band light can be ensured to be used in the printing process, the printing quality and efficiency are improved, and the risk of printing failure caused by material mismatch is reduced. At the same time, the limitation on the printing data packet is reduced, and the processing mode can be determined by using the band matching information even if the band control information is not provided.

[0083] Optionally, the above printing data packet further includes a file after preprocessing, which contains information such as material, layer thickness, and layered picture.

[0084] Optionally, the above light source mechanism can be used to emit UV light, and the mapping relationship between the printing material information and the UV band, that is, the band matching information, can be represented as shown in Table 1, and the control of the light source mechanism switching can be used as the band control information.

[0085] Table 1

[0086] Table 1 gives the parameter matching of the light projection method for materials A-G. The properties of material A (e.g. the curing depth under a specified light intensity) indicate that it is suitable for being cured by light of 362 nm, at which time the processor determines that the matching wavelength is 365 nm according to the properties of material A, and then the light source mechanism projects light of 365 nm to cure material A. Similarly, the properties of material B (e.g. the curing depth under a specified light intensity) indicate that it is suitable for being cured by light of 379 nm, at which time the processor determines that the matching wavelength is 375 nm according to the properties of material B, and then the light source mechanism projects light of 375 nm to cure material B. Similarly, the properties of material C correspond to light of 385 nm, the properties of material D correspond to light of 395 nm, the properties of material E correspond to light of 405 nm, the properties of material F correspond to light of 415 nm, and the properties of material G correspond to light of 425 nm. In some embodiments, the light source mechanism of the three-dimensional printing device can have two light-emitting units for emitting light of wavelengths of 365 nm and 385 nm, respectively. In some embodiments, the light source mechanism of the three-dimensional printing device can have two light-emitting units for emitting light of wavelengths of 385 nm and 405 nm, respectively. In some embodiments, the light source mechanism of the three-dimensional printing device can have three light-emitting units for emitting light of wavelengths of 375 nm, 395 nm, and 415 nm, respectively. For the selection and combination of light-emitting units of various wavelengths, those skilled in the art can make corresponding processing as needed.

[0087] In some embodiments, the present disclosure has at least two light-emitting units, each of which emits light of a different wavelength, and only a single light-emitting unit is in operation when projecting light to cure the printing material. It can be understood that the wavelength emitted by each light-emitting unit remains substantially constant or can be interpreted as remaining constant.

[0088] In some embodiments, the difference between the wavelengths of the two light-emitting units of the present disclosure is 10 nm to 60 nm, for example 20 nm to 50 nm, for example 30 nm to 40 nm.

[0089] In an alternative embodiment, determining the wavelength band control information matching the printing material information comprises: determining a supply mechanism for providing the printing material for the printing area, and supply information carried by the supply mechanism; determining the printing material information based on the supply information; obtaining wavelength band matching information indicating the matching relationship between the printing material and the corresponding wavelength band; and determining the wavelength band control information based on the printing material information and the wavelength band matching information.

[0090] It can be understood that the supply mechanism (such as a resin bottle) for providing the printing area with printing material is determined to supply the printing material to the printing area on demand during the three-dimensional printing process, and therefore carries the supply information. The supply information generally includes the type, composition and other key attributes of the material, which can provide support for subsequent determination of the waveband control information.

[0091] Based on the supply information carried by the supply mechanism, the printing material information can be determined. The waveband matching information indicating the matching relationship between the printing material and the corresponding waveband is obtained, and the waveband control information is determined based on the response characteristics of different wavebands of light to different printing materials. This step can involve complex logical judgment and algorithm operation to ensure that the selected waveband can produce the best photochemical reaction with the currently used printing material, reduce the risk of printing failure caused by material mismatch, and ensure that the waveband light in the printing process matches the printing material used.

[0092] It should be noted that the above-mentioned method of determining printing material information using supply information can be combined with the above-mentioned two methods of including only printing material information in the printing data packet without waveband control information, and including both printing material information and waveband control information in the printing data packet, as auxiliary information for superimposed use, to realize automatic matching and identification of the printing data packet, 3D printing material and equipment, to realize automatic adaptation of the same equipment to multiple waveband materials, and to control and prompt in a closed loop for possible user errors.

[0093] Optionally, the supply mechanism carries the supply information by at least one of the following: an NFC module, a Bluetooth module, an RFID tag or an electronic tag. In the storage / use device of the 3D printing material, an electronic tag can be used to mark the corresponding material UV waveband information.

[0094] Optionally, FIG. 2 is a schematic flowchart of a three-dimensional printing method according to an embodiment of the present disclosure. As shown in FIG. 2, in an optional embodiment, the method is applied to a light-curing 3D printing process. The original data needs to be processed by a 3D printing pre-processing software to match the original file with the 3D printing technology and equipment, convert the original data into data recognizable by the corresponding 3D printing equipment, and perform printing operation. Based on the UV waveband self-adaptation of the whole process, the UV waveband information of the corresponding material needs to be attached or marked on the pre-processing or 3D printing equipment side.

[0095] The printing data packet includes the pre-processed file, and can also include material name, layer thickness, layered picture and other information. The first way is to add material UV waveband information in the printing data packet. The 3D printer controls the matching of the UV light source waveband according to the material UV waveband information of the printing data packet.

[0096] The second way is to mark the UV band information of different materials in the 3D printing device, and automatically control the matching of the UV light source band according to the material name in the printing data packet.

[0097] The third way is to add an electronic tag in the storage / usage device of the 3D printing material to mark the corresponding material UV band information, and the device controls the matching of the UV light source band by reading the electronic information in the 3D printing material storage / usage device.

[0098] The first way, the second way and the third way can be used together to realize automatic matching and identification of the printing data packet, the 3D printing material and the device, to realize automatic adaptation of the same device to multiple band materials, and to control and prompt in a closed loop for possible user errors.

[0099] Optionally, after obtaining the band control information, the light source mechanism is controlled to perform light emission operation on the printing area, including: based on the determined band control information, controlling the corresponding first light emitting part or the second light emitting part to work to emit light; wherein the light source mechanism at least includes the first light emitting part and the second light emitting part, and the first light emitting part and the second light emitting part are used to emit light of different bands.

[0100] Through the above step S102, the band control information matched with the printing material information is determined; and in step S104, the light source mechanism is controlled to perform light emission operation 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 can emit light of multiple bands. The purpose of the light source mechanism supporting the emission of light of multiple bands can be achieved, and the technical effect of controlling the emission of light of multiple bands in a single device is achieved, thereby solving the technical problem that the three-dimensional printing device in the related art is configured as a single-band light source and cannot adapt to the printing requirements of cross use of multiple bands.

[0101] It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0102] In the embodiments of the present disclosure, a three-dimensional printing device is also provided, which will be introduced below.

[0103] FIG. 3 is a schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure, which is applied to the three-dimensional printing device of any one of the above embodiments. As shown in FIG. 3, the three-dimensional printing device includes:

[0104] The forming platform 12 is used to attach the target three-dimensional object;

[0105] a build surface, the printing area 11 being defined between the build surface and the build platform 12 for filling with the printing material;

[0106] a controller 13, in communication with the light source mechanism 10, for determining the wavelength control information matching the printing material information;

[0107] The light source mechanism 10 is capable of emitting light rays of multiple wavelengths, and the light source mechanism 10 is configured to perform light ray emission operation 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 the target three-dimensional object on the build platform 12.

[0108] In the process of 3D printing, a 3D model of the printed part can be established first, and then the 3D model of the printed part is sliced layer by layer. When printing, the first slice model can be started, and each slice model can be printed in turn on the basis of the successfully printed previous slice model, and finally a complete 3D model of the printed part is obtained, that is, the final three-dimensional object is formed. Fig. 3 is a schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure. As shown in Fig. 3, the device for forming a three-dimensional object provided by the embodiment of the present disclosure can generate a projection image according to the shape of each slice model when printing the slice model. The light source mechanism 10 can irradiate the projection image in the printing area 11 filled with the printing material (polymerizable liquid). The polymerizable liquid will be cured to form a solid or semi-solid polymer matching the projection image under the irradiation of the light emitted by the light source mechanism 10. At this time, the movement of the build platform 12 can be controlled to make the solid or semi-solid polymer separate from the build surface layer by layer. The above printing process is repeated to finally form a target three-dimensional object on the build platform 12 according to at least part of the printing material.

[0109] The light emitting mechanism involved in the present disclosure can be any display component capable of displaying exposure image information in the art, and can be a laser display device capable of displaying a projected image, or a projection device capable of projecting a projected image, such as any one or any combination of a DLP projection module, an LCD projection module, an LCOS (Liquid Crystal On Silicon) projection module, an OLED projection module, a Micro-Led (micro light emitting diode) module, a Mini-Led (mini light emitting diode) module, an LCD module, an OLED module, and an SXRD (Silicon X-Tal Re-Flective Display) projection module. The light emitting mechanism can also be a Micro-oled module or a Mini-oled module.

[0110] The construction surface is the surface of the light and the polymerizable liquid, and the polymerizable liquid can be a resin. As shown in FIG. 3, when using the bottom projection method for light curing 3D printing, the light is transmitted through the bottom of the tray to irradiate the resin on the bottom layer of the tray, and a cured layer is formed between the molding platform 12 and the bottom of the tray. At this time, the construction surface can be the upper surface of the release film provided on the bottom of the tray. In addition, the light curing printing can also be performed by using the top projection method, in which the light is irradiated on the resin from the top. At this time, the construction surface is the surface of the resin in contact with the light. It should be noted that the device for forming a three-dimensional object provided by the present disclosure can use any of the above projection methods.

[0111] It can be understood that the light source mechanism 10 is a key component in the three-dimensional printing device, which can support the emission of multiple different wavebands of light, so that the light source mechanism 10 has high flexibility and versatility, and can adapt to the printing material requirements of different wavebands, thereby expanding the application range of the device. The multiple wavebands include at least two or more wavebands, for example, the light source mechanism 10 can emit 2 wavebands, 3 wavebands, 4 wavebands, 5 wavebands, etc.

[0112] The controller 13 is connected with the light source mechanism 10, and is responsible for determining the waveband control information matched with the printing material information. During the printing process, the controller 13 acquires the waveband information of the printing material, and formulates the appropriate waveband control information accordingly. The light source mechanism 10 is ensured to emit light matched with the printing material, so as to ensure the smooth progress of the printing process and the quality of the printed part. The light source mechanism 10 performs the light emission processing on the printing area 11 according to the waveband indicated by the received waveband control information. The above-mentioned printing area 11 is determined based on the forming platform 12 and the construction surface, and through the accurate control of the light source mechanism 10, the target three-dimensional object can be solidified and formed layer by layer on the forming platform 12, and finally the complete target three-dimensional object is obtained.

[0113] The three-dimensional printing device with the above-mentioned arrangement not only improves the printing precision and the stability of the material performance, but also enhances the versatility and flexibility of the device. No matter which waveband of printing material is used, the device can automatically match the corresponding light waveband to realize high-quality three-dimensional printing.

[0114] As an optional embodiment, the light source assembly included in the light source mechanism 10 is provided with a plurality of light emitting parts, and the plurality of light emitting parts are respectively used to emit light of different wavebands. The light source mechanism 10 is further used to control the plurality of light emitting parts to perform the light emission operation on the printing area 11 based on the waveband indicated by the waveband control information.

[0115] It can be understood that the light source mechanism 10 can emit light of different wavebands through a specific light emitting part package. The package is built-in with light emitting parts respectively used to emit light of different wavebands, and each light source mechanism 10 can cross-emits light of multiple wavebands. The above-mentioned wavebands are determined according to actual needs and application scenarios as needed, and a plurality of light emission schemes can be formed through arrangement combination. During the printing process, the light source mechanism 10 performs the light emission processing on the printing area 11. In order to adapt to light of different wavebands which will have different effects on the printing material, through the accurate control of the waveband and the emission intensity of the light, the printing quality and efficiency are improved, and more possibilities are provided for adapting to various application scenarios.

[0116] Optionally, FIG. 4 is a first light emitting combination schematic diagram of an optional three-dimensional printing device provided by an embodiment of the present disclosure. As shown in FIG. 4, the first light emitting part 41 and the second light emitting part 42 are packaged together, or are attached to the same substrate, or are closely attached together, and they share a first lens assembly 61. The first light emitting part 41 and the second light emitting part 42 can be separately lighted, and after collimation through the first lens assembly 61, can directly enter the next group of target light paths 60.

[0117] Optionally, FIG. 5 is a second light-emitting combination schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure. As shown in FIG. 5, the first light-emitting piece 41, the second light-emitting piece 42, and the third light-emitting piece 43 are packaged together, or are pasted on the same substrate, or are closely attached together, and they share a set of first lens assemblies 61. The above-mentioned first light-emitting piece 41, the second light-emitting piece 42, and the third light-emitting piece 43 can be selectively lit, such as individually lit, partially lit, and fully lit.

[0118] In an optional embodiment, the plurality of light-emitting pieces are packaged in a linear arrangement and / or a matrix arrangement.

[0119] It can be understood that the plurality of light-emitting pieces included in the light source mechanism 10 can be packaged in a linear arrangement, which allows the light-emitting pieces to be arranged in a straight line in sequence, facilitating control and positioning. At the same time, the linear arrangement is also conducive to achieving uniform distribution of light, thereby improving the printing effect and quality. The plurality of light-emitting pieces can also be packaged in a predetermined matrix arrangement. The matrix arrangement allows the light-emitting pieces to be distributed according to a specific row and column, forming a two-dimensional array. This arrangement not only increases the flexibility of the light source mechanism 10, allowing 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.

[0120] It should be noted that in actual application scenarios, the light source mechanism 10 can select a suitable packaging method according to specific printing needs and environmental conditions. Random arrangement or other arrangements can also be used for packaging.

[0121] Optionally, in the case where the light source mechanism 10 is provided with a plurality of light-emitting pieces, each of the light-emitting pieces can be independently packaged and correspond to a set of lens assemblies. Some light-emitting pieces can be independently packaged, while some light-emitting pieces are packaged together, or pasted on the same substrate, or closely attached together, and the commonly packaged light-emitting pieces share a set of lens assemblies. All light-emitting pieces can be packaged together, or pasted on the same substrate, or closely attached together, and share a set of lens assemblies. Any of the above packaging combinations can be individually lit, partially lit, or fully lit.

[0122] It should be noted that the plurality of light-emitting pieces sharing a set of lens assemblies emit light that is collimated by the lens assemblies and then directly enters the next set of target light paths 60, or is reflected by one or more light path changing assemblies before entering the next set of target light paths 60.

[0123] If the light path changing component 20 exists, the entering light path or the moving-out light path provided by any of the above embodiments can be adopted, such as rotation, linear translation, non-linear translation, and the like.

[0124] Optionally, if the first light emitting member 41, the third light emitting member 43, the fourth light emitting member 44, the fifth light emitting member 45, the sixth light emitting member 46, and the seventh light emitting member 47 exist, they can be selected and arranged (not limited in number, only for example), and FIG. 6 is a third light emitting combination schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure. As shown in FIG. 6, the first light emitting member 41 and the third light emitting member 43 can be arranged in a 1*2 linear manner, or the first light emitting member 41, the third light emitting member 43, and the fourth light emitting member 44 can be arranged in a 1*3 linear manner, and the like.

[0125] The first light emitting member 41, the third light emitting member 43, the fourth light emitting member 44, and the fifth light emitting member 45 can be arranged in a 2*2 matrix manner.

[0126] Or the first light emitting member 41, the third light emitting member 43, and the fourth light emitting member 44 are arranged in a 2*3 matrix manner, and the fifth light emitting member 45, the sixth light emitting member 46, and the seventh light emitting member 47 are arranged in a second row.

[0127] The first light emitting member 41, the third light emitting member 43, the fourth light emitting member 44, the fifth light emitting member 45, the sixth light emitting member 46, and the seventh light emitting member 47 can also be arranged in a 2*3 matrix manner, or randomly arranged within a predetermined range.

[0128] In an optional embodiment, the rotation angle of the light path changing component 20 can be preferably set to a range including 45° to 180°.

[0129] In an optional embodiment, the above light emitting member can be various, such as a light emitting semiconductor chip including an LED, a laser, and the like, a fluorescent powder which can radiate other wavelengths after being irradiated by light, and other light emitting devices such as a bulb / laser / LED / laser irradiation fluorescent powder, and the like, and the light emitted after filtering is coupled to the light outlet (target light path) at the position.

[0130] In an alternative embodiment, the light source mechanism 10 is provided with a movable light path changing component 20 for changing the light path trajectory of the light emitted by the light source mechanism 10, wherein the controller 13 is further configured to determine a movement control strategy for the light path changing component 20 based on the wavelength indicated by the wavelength control information; and the light source mechanism 10 is further configured to control the light source component included in the light source mechanism 10 to emit light of the wavelength indicated by the wavelength control information to the printing area 11 through the light path changing component 20 based on the wavelength indicated by the wavelength control information.

[0131] It can be understood that the light source mechanism 10 is provided with a movable light path changing component 20, so that the light path trajectory of the light emitted by the light source mechanism 10 can be dynamically adjusted, thereby increasing the flexibility and accuracy of the device during the printing process. The controller 13 is responsible for determining the wavelength control information matching the printing material information, and further determining the movement control strategy for the light path changing component 20 based on the wavelength control information, guiding the light path changing component 20 how to move, so that the light can be projected to the printing area 11 according to the predetermined trajectory. The light source mechanism 10 then executes the movement control of the light path changing component 20 according to the indication of the controller 13. At the same time, the light source in the light source mechanism 10 is also controlled to ensure that the light matching the wavelength indicated by the wavelength control information is emitted to the printing area 11 through the light path changing component 20 which has executed the movement control strategy. By providing a movable light path changing component 20 in the light source mechanism 10, the above-mentioned three-dimensional printing device can realize the on-demand projection control of light of multiple wavelengths during the printing process, which is conducive to improving the adaptability of the three-dimensional printing device to different printing requirements.

[0132] Optionally, the above-mentioned light path changing component 20 can be of multiple types, and can be set as a reflector, a dichroic combiner, etc. according to the need of executing light path changing.

[0133] In an alternative embodiment, the light path changing component executes the movement control strategy in at least one of the following ways: rotation, linear translation, and non-linear translation.

[0134] It can be understood that the above light path changing component 20 supports the implementation of the movement control strategy in multiple ways to change the light path trajectory of the light emitted by the light source mechanism 10. By rotating one or more components in the light path changing component 20, the propagation direction of the light can be changed; by moving the components in the light path changing component 20 in a straight line direction, the adjustment of the light propagation path can be realized; the non-linear translation mode allows the components in the light path changing component 20 to move along a specific curve or path, thereby adjusting the light propagation path. By supporting at least one of the above modes to implement the movement control strategy, the light path changing component 20 can flexibly adjust the light propagation path according to different printing requirements and material characteristics, and can meet more diversified printing requirements.

[0135] Optionally, the application mode of the non-linear translation mode can be that a three-dimensional object with a complex curved surface structure needs to be printed.

[0136] Optionally, FIG. 7 is a first rotation schematic view of an optional three-dimensional printing device provided by an embodiment of the present disclosure, as shown in FIG. 7, which includes a light path changing component 20, a first lens component 61, a second lens component 62, a first light source component 31, a second light source component 32, a rotation axis 50, and a target light path 60. The first light source component 31 includes a first light emitting part 41 and the first lens component 61, and the second light source component 32 includes a second light emitting part 42 and the second lens component 62, which can emit light of two different wavebands.

[0137] The first light emitting part 41 and the second light emitting part 42 are orthogonally placed, the first light emitting part 41 is turned on, the second light emitting part 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 after passing through the lens component 21, and then directly enters the next group of target light paths.

[0138] When the second light source component 32 needs to be turned on, the first light source component 31 is turned off, the light path changing component 20 is rotated by a certain angle (represented by the dashed box in the original position), the angle of rotation of the light path changing component 20 is, for example, 45°, the first light source component 31 and the second light source component 32 are orthogonally placed, and the first light emitting part 41 is directly opposite the incident target light path 60. The light emitted by the second light emitting part 42 is collimated after passing through the second lens component 62, and then reflected by the light path changing component 20, so that the same incident direction as the original first light emitting part 41 enters the next group of target light paths 60.

[0139] The light path changing component 20 rotates around the rotation axis 50, which is perpendicular to the predetermined first plane, i.e. perpendicular to the paper plane in the example shown in FIG. 7. The rotation axis 50 is shown as the axis intersecting the initial and rotated positions. The actual direction and position of the rotation of the light path changing component 20 around the rotation axis 50 are not fixed. The light path changing component 20 is rotated to the required light path position only when a certain light source needs to be reflected to the next group of target light paths 60. The light path changing component 20 is rotated to other positions when it is not needed, which does not affect other light sources.

[0140] Optionally, the rotation axis 50 perpendicular to the predetermined first plane, i.e. perpendicular to the paper plane, is not necessarily located at the edge of the light path changing component 20 close to the first light emitting member 41 and the second light emitting member 42. It can also be located at the end away from the first light emitting member 41 and the second light emitting member 42, or can pass through the inside of the light path changing component 20.

[0141] FIG. 8 is a second rotation schematic view of an optional three-dimensional printing device according to an embodiment of the present disclosure. As shown in FIG. 8, the rotation axis 50 perpendicular to the predetermined first plane is located at the end away from the first light emitting member 41 and the second light emitting member 42.

[0142] FIG. 9 is a third rotation schematic view of an optional three-dimensional printing device according to an embodiment of the present disclosure. As shown in FIG. 9, the rotation axis 50 is located inside the light path changing component 20. The first light source assembly 31 and the second light source assembly 32 are placed opposite to each other. When the first light emitting member 41 is on, the second light emitting member 42 is off. The light emitted by the first light emitting member 41 is collimated by the second lens assembly 62, and then the collimated light is reflected by the light path changing component 20 into the next group of target light paths 60.

[0143] When the second light emitting member 42 needs to be on, the first light emitting member 41 is off. The light path changing component 20 is rotated to the position shown on the right side of FIG. 5. The light emitted by the first light emitting member 41 is collimated by the second lens assembly 62, and then the collimated light is reflected by the light path changing component 20 into the next group of target light paths 60 in the same direction as the first light emitting member 41. The rotation axis 50 is perpendicular to the predetermined first plane, i.e. perpendicular to the paper plane, and is located between the first light source assembly 31 and the second light source assembly 32.

[0144] Optionally, the rotation axis 50 can also make the light path changing component 20 rotate in a direction perpendicular to the predetermined first plane, i.e. perpendicular to the paper plane. FIG. 10 is a fourth rotation schematic view of an optional three-dimensional printing device according to an embodiment of the present disclosure. As shown in FIG. 10, the first light source component 31 and the second light source component 32 are placed orthogonally. When the first light source component 31 is on, the second light source component 32 is 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 directly enters the next group of target light paths 60.

[0145] When the second light source component 32 needs to be on, the first light source component 31 is off. The light path changing component 20 rotates by a certain angle. The minimum angle of rotation of the light path changing component 20 is determined according to the actual light transmission area and the position of the rotation axis 50. The maximum rotation angle is 180°. In the example shown in FIG. 10, it is assumed that the rotation is 180°. The first light source component 31 is directly opposite the incident target light path 60. The light emitted by the second light source component 32 is collimated by the lens component 21 and then reflected by the light path changing component 20, so that the light source enters the next group of target light paths 60 in the same incident direction as the original first light source component 31.

[0146] The light path changing component 20 rotates around the axis. The rotation axis 50 is parallel to the paper plane and has a certain angle with the light propagation axis of the first light source component 31 and the second light source component 32. The rotation axis 50 is located in a space close to the distance between the first light source component 31 and the second light source component 32. The light path changing component 20 only rotates to the light path position when a certain light needs to be reflected to the next group of target light paths. When it is not needed, the light path changing component 20 needs to rotate to other positions, which does not affect other groups of light sources.

[0147] The rotation axis 50 parallel to the paper plane is not necessarily located at the edge of the light path changing component 20. It can also be located at one end away from the first light source component 31 and the second light source component 32, or it can pass through the inside of the light path changing component 20.

[0148] In an optional embodiment, the first light emitting member 41 and the second light emitting member 42 are oppositely arranged. The first light emitting member 41 and the second light emitting member 42 are respectively placed orthogonally to the target light path 60. The inside of the light path changing component 20 is provided with a rotation axis 50. Alternatively, the light path changing component 20 includes a first changing component 21 and a second changing component 22. 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. 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 with the movement trajectory around the second axis 52.

[0149] It can be understood that the first light emitting member 41 and the second light emitting member 42 are oppositely arranged, by placing the first light emitting member 41 and the second light emitting member 42 orthogonally with the target light path 60 respectively, it can be ensured that the emitted light is perpendicular to the target light path, so as to facilitate the subsequent light path adjustment. The rotating shaft 50 can be arranged inside the light path changing assembly 20, which can rotate and move around the shaft to adjust the propagation path of the light. Or when the light path changing assembly 20 includes the first changing assembly 21 and the second changing assembly 22, the rotating movement of the first shaft 51 and the second shaft 52 can be controlled by arranging the first shaft 51 and the second shaft 52 respectively, the movement trajectory around the first shaft 51 intersects with the movement trajectory around the second shaft 52, through the above arrangement, the first changing assembly 21 and the second changing assembly 22 can work cooperatively to realize the multi-angle and multi-direction adjustment of the light.

[0150] Optionally, FIG. 11 is a fifth rotating schematic view of an optional three-dimensional printing device according to an embodiment of the present disclosure, as shown in FIG. 11, the position of the rotating shaft 50 arranged parallel to the predetermined first plane, i.e. parallel to the paper surface direction, is arranged to rotate away from one end of the first light emitting member 41 and the second light emitting member 42. The above-mentioned light path changing assembly 20 can include a plurality of first changing assembly 21 and second changing assembly 22, the first changing assembly 21 corresponds to its own rotating shaft, i.e. the first shaft 51, and the second changing assembly 22 corresponds to its own rotating shaft, i.e. the second shaft 52.

[0151] FIG. 12 is a sixth rotating schematic view of an optional three-dimensional printing device according to an embodiment of the present disclosure, as shown in FIG. 12, the first light emitting member 41 and the second light emitting member 42 are placed opposite to each other, the first light emitting member 41 is turned on, and the second light emitting member 42 is turned off, the rotating positions of the first changing assembly 21 and the second changing assembly 22 are shown in the left side of FIG. 12, the light emitted by the first light emitting member 41 passes through the first lens assembly 61 after collimation, and then the collimated light is reflected into the next target light path 60 by the first changing assembly 21.

[0152] When the second light emitting element 42 needs to be turned on, the first light emitting element 41 is turned off, the first changing assembly 21 and the second changing assembly 22 are rotated to the position shown in the right side of the figure, the light emitted by the second light emitting element 42 is collimated by the second lens assembly 62, and then the collimated light is reflected by the second lens assembly 62, and enters the next group of target light paths 60 in the same direction as the first light emitting element 41. The first axis 51 corresponding to the first changing assembly 21 and the second axis 52 corresponding to the second changing assembly 22 are both rotated in the direction perpendicular to the predetermined first plane, i.e., perpendicular to the paper, and can be arranged near the edges of the first changing assembly 21 and the second changing assembly 22. The position shown in FIG. 12 is only one of them, and the first axis 51 and / or the second axis 52 can also be near the other end edge shown in FIG. 12. The first changing assembly 21 and the second changing assembly 22 are rotated around the corresponding rotation axis into the light path when needed, and are rotated out of the light path around the corresponding rotation axis when not needed, and only one changing assembly can be in the light path at a time.

[0153] In an alternative embodiment, the first light emitting element 41 and the second light emitting element 42 are arranged orthogonally, the first light emitting element 41 is placed opposite to the target light path 60, and the light path changing assembly 20 is arranged to move in the first predetermined plane in a direction opposite to the second light emitting element 42, 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 assembly 20 is arranged to move in a direction perpendicular to the first predetermined plane.

[0154] It can be understood that the first light emitting element 41 and the second light emitting element 42 are arranged orthogonally, and at the same time, the first light emitting element 41 is placed opposite to the target light path 60, and the light path changing assembly 20 can be arranged to move in the first predetermined plane in a direction opposite to the second light emitting element 42. The first predetermined plane here 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. The light path changing assembly 20 can also be arranged to move in a direction perpendicular to the first predetermined plane. This movement mode enables the light path changing assembly 20 to be adjusted in a direction perpendicular to the light emitting surface of the light source assembly.

[0155] Alternatively, the light path changing assembly 20 can also be arranged to move in a straight line, and FIG. 13 is a first translation schematic diagram of an alternative three-dimensional printing device according to an embodiment of the present disclosure. As shown in FIG. 13, the first changing assembly 21 and the second changing assembly 22 are arranged orthogonally, the first light emitting element 41 is turned on, the second light emitting element 42 is turned off, the light path changing assembly 20 is not in the light path of the first changing assembly 21, and the light emitted by the first light emitting element 41 is directly collimated by the first lens assembly 61 and enters the next group of target light paths 60.

[0156] When the second light emitting element 42 needs to be turned on, the first light emitting element 41 is turned off, and the light path changing component 20 is translated into the light path. The light emitted by the second light emitting element 42 is collimated by the second lens component 62 and then reflected by the light path changing component 20, so that the second light emitting element 42 has the same incident direction as the first light emitting element 41 before entering the next group of target light paths 60.

[0157] The light path changing component 20 is translated into the light path position only when a light source needs to be reflected into the next group of target light paths 60. When the light path changing component 20 does not need to be translated into the light path position, the light path changing component 20 is translated into other positions without affecting other groups of light sources. It should be noted that the above translation mode can be a linear translation mode or a non-linear translation mode according to needs.

[0158] Alternatively, the light path changing component 20 can enter the light path along a direction perpendicular to the picture in addition to the direction translation into the light path shown in FIG. 13. The light path changing component 20 can be translated into the light path from the top or the bottom, respectively. FIG. 14 is a second translation schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure. As shown in FIG. 14, the light path changing component 20 is translated into the light path from the top to perform light path changing. FIG. 15 is a third translation schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure. As shown in FIG. 15, the light path changing component 20 is translated into the light path from the bottom to perform light path changing.

[0159] In an optional embodiment, the first light emitting element 41 and the second light emitting element 42 are oppositely arranged, and the first light emitting element 41 and the second light emitting element 42 are arranged orthogonally with respect to the target light path 60. The light 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 translation trajectory, and the second changing component 22 moves along a second translation trajectory, wherein the first translation trajectory intersects the second translation trajectory.

[0160] It can be understood that the first light emitting element 41 and the second light emitting element 42 are oppositely arranged, and the first light emitting element 41 and the second light emitting element 42 are arranged orthogonally with respect 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, and 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 multi-angle and multi-direction adjustment of the light.

[0161] Optionally, FIG. 16 is a fourth translation schematic view of an optional three-dimensional printing device according to an embodiment of the present disclosure. As shown in FIG. 16, the first changing component 21 and the second changing component 22 are placed opposite to each other. When the first light emitting member 41 is turned on, the second light emitting member 42 is turned off. The first changing component 21 is translated into the light path of the first light emitting member 41. The light emitted by the first light emitting member 41 is collimated by the first lens component 61, and then reflected by the first changing component 21 into the next target light path 60.

[0162] When the second light emitting member 42 needs to be turned on, the first light emitting member 41 is turned off. The first changing component 21 is translated out of the light path. The second light path changing component 22 is translated into the light path. The light emitted by the second light emitting member 42 is collimated by the second lens component 62, and then reflected by the second light path changing component 22. The reflected light has the same incident direction as the light emitted by the first light emitting member 41, and enters the next target light path 60. The light path changing component 20 is only translated to the light path position when the light source needs to be reflected to the next target light path. When the light source does not need to be reflected, the reflector is translated to other positions, which does not affect the placement of other groups of reflectors. In addition to the linear translation mode shown in FIG. 16, the light path changing component 20 can also have various non-linear translation modes such as right-angle bending.

[0163] In an optional embodiment, a third light source component 33 is further included. The third light source component 33 includes a third light emitting member 43. The third light emitting member 43 is placed orthogonally to the first light emitting member 41, and is placed side by side with the second light emitting member 42. The light path changing component 20 includes the first changing component 21 and the second changing component 22. The first changing component 21 is used to control the light emitted by the first light emitting member 41 and / or the second light emitting member 42 to the relay lens 64. The relay lens 64 is disposed between the first changing component 21 and the second changing component 22. The second changing component 22 is used to control the light passing through the relay lens 64 and / or the light emitted by the third light emitting member 43 to the target light path 60.

[0164] It can be understood that the third light emitting member 43 included in the third light source assembly 33 is arranged orthogonally to the first light emitting member 41, and the third light emitting member 43 is arranged side by side with the second light emitting member 42. The light path changing assembly 20 can be divided into the first changing assembly 21 and the second changing assembly 22, which perform cooperative work to realize the adjustment of 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 member 41 and / or the second light emitting member 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 light 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 member 43 to the target light 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 member 43, so that the light can accurately enter the target light path 60.

[0165] Optionally, FIG. 17 is a fourth light emitting combination schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure. As shown in FIG. 17, the first light source assembly 31 includes the first light emitting member 41 and the first lens assembly 61, the second light source assembly 32 includes the second light emitting member 42 and the second lens assembly 62, and the third light source assembly 33 includes the third light emitting member 43 and the third lens assembly 63. The light path changing assembly 20 can be set as a dichroic combiner type, wherein the first changing assembly 21 is used for the light combining of the first light emitting member 41 and the second light emitting member 42, the second changing assembly 22 is used for the light combining of the first light emitting member 41, the second light emitting member 42, and the third light emitting member 43, and the relay lens 64 is arranged to relay the light, so that the light enters the target light path 60 as needed. It should be noted that the first changing assembly 21 and the second changing assembly 22 described above can be any one of the above embodiments into or out of the light transmission area.

[0166] Optionally, FIG. 18 is a fifth light-emitting combination schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure. As shown in FIG. 18, the first light-emitting component 41 and the fourth light-emitting component 44 are packaged together, or are attached to the same substrate, or are closely attached together, and they share a set of lens assemblies, such as the first lens assembly 61. The second light-emitting component 42 is independently packaged, and uses the second lens assembly 62. The above packaging manners are only examples, and can be configured as needed. The second light-emitting component 42 can be separately lit, and when lit, the first light-emitting component 41 and the fourth light-emitting component 44 are turned off. The first light-emitting component 41 and the fourth light-emitting component 44 sharing the first lens assembly 61 can be separately lit, for example, a chip of a certain waveband, or the first light-emitting component 41 and the fourth light-emitting component 44 can be simultaneously lit. When the independently packaged second light-emitting component 42 is lit, the light path changing assembly 20 cooperating therewith enters the light path, and the light path changing assembly 20 cooperating with other light sources is removed from the light path. When the first light-emitting component 41 and the fourth light-emitting component 44 sharing the first lens assembly 61 are lit, the light path changing assembly 20 cooperating therewith enters the light path, and the light path changing assembly 20 cooperating with the independently packaged third light-emitting component 43 is removed from the light path. The light path changing assembly 20 can enter or be removed from the light path in any manner provided in the above embodiments, such as rotation, linear translation, non-linear translation, and the like.

[0167] Optionally, FIG. 19 is a sixth light-emitting combination schematic diagram of an optional three-dimensional printing device according to an embodiment of the present disclosure. As shown in FIG. 19, the light emitted by the first light-emitting component 41 and the second light-emitting component 42 packaged together enters the next group of target light paths 60. The light path changing assembly 20 can be in a non-fixed position, such as rotation or linear translation, or can be in a fixed manner.

[0168] In an optional embodiment, the light path changing assembly 20 is any one of a reflector or a combiner, and the difference between the peak wavelengths of the light emitted by the first light source assembly 31 and the second light source assembly 32 is greater than or equal to 0 nanometer.

[0169] It can be understood that the light path changing assembly 20 can be a reflector or a combiner, and both types of assemblies can change the propagation path of the light and be configured as needed. When the light path changing assembly 20 is a reflector, it changes the light path trajectory through reflection to ensure that the light emitted by different light source assemblies can propagate according to a predetermined path, thereby avoiding spectral overlap. Through this setting, the difference between the peak wavelengths of the light emitted by the first light source assembly 31 and the second light source assembly 32 is 0 nanometer (i.e., the peak wavelengths are the same), and effective separation of the light can also be achieved through the reflection of the reflector, and the combining efficiency is maintained.

[0170] When the light path changing component 20 is a light combining sheet, it can be a dichroic light combining sheet, which utilizes the principle of dichroism to allow light of specific wavelengths to pass through while reflecting or absorbing light of other wavelengths. In this way, the light combining sheet 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 combining sheet can achieve effective separation and light combining of the light through its unique filtering properties.

[0171] Alternatively, the aforementioned light reflecting sheet, which has a reflecting effect on light, can also be a wedge-shaped prism, a single isosceles right-angle prism, a double-glued isosceles right-angle prism, a reflecting bowl, a reflecting lens, etc.

[0172] In an alternative embodiment, the first light source component 31 and the second light source component 32 are respectively encapsulated with at least one waveband corresponding light emitting element and a lens assembly. The at least one waveband corresponding light emitting element encapsulated by the first light source component 31 includes the first light emitting element 41, and the at least one waveband corresponding light emitting element encapsulated by the second light source component 32 includes the second light emitting element 42. The lens assembly is used for collimating the transmitted light.

[0173] It can be understood that the first light source component 31 and the second light source component 32 are both encapsulated with at least one waveband corresponding light emitting element and a lens assembly. The optical performance of the light source mechanism is optimized, and the utilization rate and light combining efficiency of the light source are improved. The first light source component 31 includes the first light emitting element 41, and the second light source component 32 includes the second light emitting element 42, which can be selected and configured according to different application requirements to ensure that the light source mechanism can emit light of the required waveband and adapt to multi-waveband applications, so that the light source mechanism can adapt to different application scenarios. The introduction of the lens assembly collimates the light emitted by the light emitting element, i.e., makes the light propagate in a parallel or approximately parallel state. By providing the collimating effect through the lens assembly, the propagation efficiency and utilization rate of the light can be significantly improved, and the scattering and loss of the light can be reduced.

[0174] In an alternative embodiment, the light source mechanism further includes an optical device 70 disposed on the target light path. The optical device 70 includes a digital micromirror device, a silicon-based liquid crystal panel, or a transmissive liquid crystal panel.

[0175] As shown in FIG. 20 and FIG. 21, the optical device 70 is arranged on the target light path, and the optical device 70 is configured to convert the light rays into target light rays, and the target light rays are irradiated onto the liquid photosensitive material to make the specific photosensitive material solidify according to the predetermined pattern information. In the 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 an element with the same function.

[0176] In the embodiment, the light path changing assembly 20 can be a mirror, and two mirrors are arranged in the device, each mirror can rotate around an axis, and the first light source assembly 31 and the second light source assembly 32 are arranged towards the mirrors. When the first light source assembly 31 is lit, the other light sources are turned off, and the mirror reflects the light emitted into the corresponding light path. After the light emitted by the first light source assembly 31 is collimated by the optical lens group and reflected by the mirror, it is irradiated onto the LCD screen to provide backlight for the LCD. When the second light source assembly 32 needs to be lit, the other light sources are turned off, and the mirror corresponding to the second light source assembly 32 is rotated by a certain angle to reflect the light emitted into the corresponding light path. The angle of rotation of the mirror is determined according to the angle between the light source and the other light path. In the embodiment, the mirror is rotated by 90°, and the first light source assembly 31 and the second light source assembly 32 are arranged orthogonally.

[0177] In the embodiment, the mirror rotates around an axis, and the axis is perpendicular to the picture. The axis position is the axis intersecting the initial and rotated positions. The direction and position of the actual mirror rotating around the axis are not fixed. The mirror only rotates to the light path position when a certain light source needs to be reflected to the LCD light path, and rotates to other positions when it is not needed, without affecting other groups of light sources.

[0178] In an alternative embodiment, when the light source mechanism 10 is multiple, each light source mechanism 10 includes at least one wave band corresponding light emitting piece, and the at least one wave band belongs to multiple wave bands. When the light source mechanism 10 is single, the single light source mechanism 10 includes multiple wave bands corresponding light emitting pieces.

[0179] It can be understood that the three-dimensional printing device can be arranged as a single light machine or a multiple light machine, i.e. multiple light source mechanisms 10 or a single light source mechanism 10. Each light source mechanism 10 can include one or more light source assemblies, and the light source assembly can also include multiple wave band corresponding light emitting pieces.

[0180] In the embodiment, a three-dimensional printing device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and will not be described again. As used below, the term "module" "device" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware is also possible and contemplated.

[0181] According to the embodiments of the present disclosure, a device for implementing the three-dimensional printing method is also provided. FIG. 22 is a schematic diagram of a three-dimensional printing device according to an embodiment of the present disclosure. The three-dimensional printing device includes a strategy determination module 2002 and a light emission control module 2004. The device will be described below.

[0182] The strategy determination module 2002 is configured to determine the wavelength control information matched with the printing material information.

[0183] The light emission control module 2004 is connected with the strategy determination module 2002 and is configured to control the light source mechanism to perform the light emission operation on the printing area based on the wavelength indicated by the wavelength control information, so that the at least part of the printing material forms the target three-dimensional object on the forming platform. The light source mechanism can emit light of multiple wavelengths.

[0184] In the three-dimensional printing device provided by the embodiments of the present disclosure, the strategy determination module 2002 is configured to determine the wavelength control information matched with the printing material information. The light emission control module 2004 is connected with the strategy determination module 2002 and is configured to control the light source mechanism to perform the light emission operation on the printing area based on the wavelength indicated by the wavelength control information, so that the at least part of the printing material forms the target three-dimensional object on the forming platform. The light source mechanism can emit light of multiple wavelengths. The purpose of supporting the light source mechanism to emit light of multiple wavelengths is achieved. The technical effect of controlling the light source mechanism to emit light of multiple wavelengths in a single device to perform three-dimensional printing is achieved. The technical problem that the three-dimensional printing device in the related art is configured as a single-wavelength light source and cannot adapt to the printing requirements of cross-use of multiple wavelengths is solved.

[0185] It should be noted that the above-mentioned modules can be implemented by software or hardware. For the latter, the above-mentioned modules can be located in the same processor or in different processors in any combination.

[0186] It should be noted that the strategy determination module 2002 and the light emission control module 2004 correspond to steps S102-S104 in the embodiment, and the modules and the corresponding steps have the same instances and application scenarios as disclosed in the embodiment, but are not limited to the embodiment. It should be noted that the modules can be run in a computer terminal as part of the device. It should be noted that the optional or preferred embodiments of the present embodiment can refer to the related description in the embodiment, which will not be repeated here.

[0187] The three-dimensional printing device can further include a processor and a memory, and the strategy determination module 2002 and the light emission control module 2004 are stored in the memory as program units, and the processor executes the program units stored in the memory to realize the corresponding functions. The processor includes a core, and the core calls the corresponding program units from the memory. The core can be one or more. The memory can include a non-persistent memory in a computer readable medium, a random access memory (RAM) and / or a non-volatile memory such as a read-only memory (ROM) or a flash random access memory (flash RAM), and the memory includes at least one memory chip.

[0188] The embodiment of the present disclosure provides a non-volatile storage medium having a program stored thereon, and the program is executed by a processor to implement the three-dimensional printing method.

[0189] The embodiment of the present disclosure provides an electronic device including a processor, a memory, and a program stored in the memory and executable on the processor, and the processor executes the program to implement the following steps: determining wave band control information matched with printing material information; and 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 device in the present disclosure can be a server, a PC (Personal Computer), and the like.

[0190] The present disclosure also provides a computer program product adapted to execute a program having the following steps when executed on a data processing device: determining wave band control information matched with printing material information; and 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.

[0191] Those skilled in the art will appreciate that embodiments of the disclosure can be supplied as a method, a system, or a computer program product. Accordingly, the disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the disclosure can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage devices, and the like) embodying computer readable program code. A CD-ROM (Compact Disc Read-Only Memory) is a compact disc that can store data.

[0192] The disclosure is described in reference to the flowchart and / or block diagrams of the method, apparatus (system) and computer program product according to embodiments of the disclosure. It should be understood that each flow and / or block in the flowchart and / or block diagram, and a combination of flows and / or blocks in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions, which are executed via the processor of the computer or other programmable data processing apparatus, generate means for implementing the functions specified in the flowchart one or more flows and / or block diagram one or more blocks.

[0193] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including instruction means, which implement the functions specified in the flowchart one or more flows and / or block diagram one or more blocks.

[0194] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operational steps are performed on the computer or other programmable data processing apparatus to generate a computer implemented process, so that the instructions executed on the computer or other programmable data processing apparatus provide steps for implementing the functions specified in the flowchart one or more flows and / or block diagram one or more blocks.

[0195] In a typical configuration, a computing device includes one or more processors (Central Processing Unit, CPU), input / output interfaces, network interfaces, and memory. The memory can include non-persistent memory in the form of a computer readable medium, random access memory (RAM), and / or non-volatile memory such as read only memory (ROM) or flash memory. The memory is an example of a computer readable medium.

[0196] Computer-readable media includes permanent and non-permanent, movable and non-movable media that can be implemented by any method or technology to store information. Information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase-change random access 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 technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible to a computing device. According to the definition in this disclosure, computer-readable media does not include transitory media such as modulated data signals and carriers.

[0197] According to another aspect of the embodiments of the present disclosure, a three-dimensional printing device is provided, comprising: a light source mechanism configured to provide light rays for solidifying printing material; and a forming platform, wherein the printing material is adhered to the forming platform, wherein the light source mechanism comprises a first light emitting unit and a second light emitting unit, the first light emitting unit is configured to emit light rays of a first wavelength, and the second light emitting unit is configured to emit light rays of a second wavelength different from the first wavelength.

[0198] In some embodiments, the light source mechanism further comprises a light path changing component configured to change the light path of the light rays emitted by the light source mechanism.

[0199] In some embodiments, the light path changing component is switchable between a first state and a second state, in the first state, the light path changing component is configured to change the light path of the light rays emitted by the first light emitting unit, and in the second state, the light path changing component is configured to change the light path of the light rays emitted by the second light emitting unit.

[0200] In some embodiments, the light path changing component is switchable between a first state and a second state, in the first state, the light path changing component is configured to change the light path of the light rays emitted by the first light emitting unit, and in the second state, the light path changing component is configured to change the light path of the light rays emitted by the second light emitting unit.

[0201] In some embodiments, the light source mechanism further comprises a lens component configured to collimate the light rays.

[0202] In some embodiments, the three-dimensional printing device further comprises an optical detection mechanism configured to detect at least one of the light intensity or uniformity of the light rays from the light source mechanism.

[0203] According to another aspect of the embodiments of the present disclosure, a three-dimensional printing method is provided, comprising: receiving information of a first wavelength associated with a first material; based on the information of the first wavelength, emitting light rays of the first wavelength to solidify the first material; receiving information of a second wavelength associated with a second material; based on the information of the second wavelength, emitting light rays of the second wavelength to solidify the second material.

[0204] In some embodiments, the information of the first wavelength associated with the first material is obtained from a supply mechanism for the first material, and / or the information of the second wavelength associated with the second material is obtained from a supply mechanism for the second material. The information is obtained from the supply mechanism, for example, by NFC (Near Field Communication), RFID (Radio Frequency Identification), etc.

[0205] In some embodiments, the information of the first wavelength associated with the first material is obtained from a set of printing parameters associated with the first material, and / or the information of the second wavelength associated with the second material is obtained from a set of printing parameters associated with the second material. The aforementioned set of printing parameters includes, for example, the material category, the wavelength of the light rays suitable for solidifying it, etc.

[0206] In some embodiments, the three-dimensional printing method further comprises: determining that the first material is the material to be solidified, and determining the first wavelength suitable for the first material; and / or determining that the second material is the material to be solidified, and determining the second wavelength suitable for the second material. For example, when it is determined that the first material is about to be solidified, the first wavelength corresponding to the first material is determined, and the light source mechanism is controlled to switch to or remain in a mode for projecting light rays of the first wavelength.

[0207] In some embodiments, the three-dimensional printing method further comprises: after emitting the light rays of the first wavelength or the second wavelength, detecting at least one of the light intensity or uniformity of the light rays. This can calibrate the accuracy and stability of the light projection in 3D printing technologies such as DLP, etc.

[0208] As an example, the operator selects to cure the first material using light of wavelength 385 nm (or 405 nm) for a first time period (e.g., 0-3 hours, 0-3 days, 0-3 months), and then to cure the second material using light of wavelength 405 nm (or 365 nm) for a second time period (e.g., 4-7 hours, 5-8 days, 4-9 months). When the operator operates the device to emit light of, for example, wavelength 385 nm or 405 nm, it can use an optical detection mechanism to detect the light intensity of the light rays, or to detect uniformity (e.g., by detecting the light intensity at various points of the projected area). The information detected by the optical detection mechanism can be communicated to the processor of the 3D printing device, and acquired by an external device. In some embodiments, the optical detection mechanism can activate one or more spectrometers to detect, depending on the wavelength information of the light rays currently being projected. A single spectrometer can be used to detect light rays of a single wavelength, or can be used to detect light rays of multiple wavelengths.

[0209] It is noted that the "first wavelength" and "second wavelength" of the present disclosure as applied to the printing material actually include all wavelength values in a range of wavelengths, i.e., can also be referred to as "first wavelength range" and "second wavelength range". For example, the first wavelength 385 nm can be considered as any value in the range of 381 nm to 389 nm. For example, the received material information indicates that the first material is best suited to be cured by 382 nm, and thus light rays of 381 nm or 386 nm can be emitted. Similarly, the first wavelength 405 nm can be considered as any value in the range of 401 nm to 409 nm. For example, the received material information indicates that the first material is best suited to be cured by 406 nm, and thus light rays of 405 nm or 407 nm can be emitted. The wavelength of the light rays emitted by the light source mechanism is usually fixed, but the light rays can be suitable for multiple photosensitive resins in a certain range of wavelengths.

[0210] It is also noted that the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0211] Those skilled in the art will appreciate that embodiments of the present disclosure can be provided as methods, systems or computer program products. Accordingly, the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage devices, etc.) embodying computer-usable program code.

[0212] The above merely provides embodiments of the present disclosure, but does not serve to limit the present disclosure. Various modifications and changes can be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the scope of claims of the present disclosure. Industrial applicability

[0213] The scheme provided by the embodiments of the present disclosure can be applied to the field of three-dimensional printing technology. In the embodiments of the present disclosure, the waveband control information matched to the printing material information is adopted, the light source mechanism can be controlled by waveband, the three-dimensional printing processing of the printing area is performed, the generated target three-dimensional object can include printing materials of different waveband light sources, and the compatibility of the printer to various resin materials is improved. By switching and controlling different curing light sources on the same device, the curing process can be accurately controlled, the surface quality and detail performance of the printed part are improved, more types of printing materials can be processed, the time for replacing the printer or adjusting the settings is reduced, the production efficiency is improved, the number of devices is reduced, and the overall production cost is reduced.

Claims

1. A three-dimensional printing apparatus, comprising: a light source mechanism configured to provide light rays for solidifying a printing material; and a forming platform, wherein the printing material adheres to the forming platform, wherein the light source mechanism comprises a first light emitting unit configured to emit light rays of a first wavelength and a second light emitting unit configured to emit light rays of a second wavelength different from the first wavelength. 2.The three-dimensional printing apparatus of claim 1, wherein the light source mechanism further comprises a light path changing component configured to change a light path of the light rays emitted by the light source mechanism.

3. The three-dimensional printing apparatus of claim 2, wherein, The light path changing component is switchable between a first state in which the light path changing component is configured to change a light path of the light rays emitted by the first light emitting unit and a second state in which the light path changing component is configured to change a light path of the light rays emitted by the second light emitting unit.

4. The three-dimensional printing apparatus of claim 3, wherein, The light path changing component is switchable between the first state and the second state in a manner of rotation or translation. 5.The three-dimensional printing apparatus of claim 1, wherein the light source mechanism further comprises a lens component configured to collimate the light rays. 6.The three-dimensional printing apparatus of claim 1, further comprising an optical detection mechanism configured to detect at least one of an intensity or a uniformity of the light rays from the light source mechanism.

7. The three-dimensional printing device of claim 6, wherein, The optical detection mechanism is arranged on a tray of the three-dimensional printing apparatus, or the optical detection mechanism is arranged between the light source mechanism and the tray of the three-dimensional printing apparatus.

8. The three-dimensional printing apparatus of claim 1, wherein, A difference between the first wavelength and the second wavelength is 10 nm to 60 nm.

9. A method of three-dimensional printing, wherein, comprising: receiving information of a first wavelength associated with a first material; based on the information of the first wavelength, emitting light rays of the first wavelength to solidify the first material; receiving information of a second wavelength associated with a second material; based on the information of the second wavelength, emitting light rays of the second wavelength to solidify the second material. 10.The three-dimensional printing method of claim 9, wherein the information of the first wavelength associated with the first material is obtained from a supply mechanism for the first material, and / or the information of the second wavelength associated with the second material is obtained from a supply mechanism for the second material. 11.The three-dimensional printing method of claim 9, wherein the information of the first wavelength associated with the first material is obtained from a set of printing parameters associated with the first material, and / or the information of the second wavelength associated with the second material is obtained from a set of printing parameters associated with the second material. 12.The three-dimensional printing method of claim 9, further comprising: determining that the first material is a material to be solidified and determining the first wavelength adapted to the first material; and / or determining that the second material is a material to be solidified and determining the second wavelength adapted to the second material. after emitting the light rays of the first wavelength or the second wavelength, detecting at least one of an intensity or a uniformity of the light rays.

13. The three-dimensional printing method of claim 9, further comprising: ​ 14. The three-dimensional printing method of claim 9, wherein a difference between the first wavelength and the second wavelength is 10 nm-60 nm.

15. A method of three-dimensional printing, wherein, Comprising: determining wavelength control information matched with the printing material information; controlling the light source mechanism to perform light emission operation on the printing area based on the wavelength indicated by the wavelength control information, so that at least part of the printing material forms the target three-dimensional object on the forming platform, wherein the light source mechanism can emit light of multiple wavelengths.

16. The method of claim 15, wherein, The determination of the wavelength control information matched with the printing material information comprises: acquiring a printing data packet corresponding to the target three-dimensional object; in the case that the printing data packet includes the wavelength control information, reading the wavelength control information according to the printing data packet; and / or in the case that the printing data packet includes the printing material information, acquiring wavelength matching information indicating the matching relationship between the printing material and the corresponding wavelength; determining the wavelength control information based on the printing material information and the wavelength matching information.

17. The method of claim 15, wherein, The determination of the wavelength control information matched with the printing material information comprises: determining a feeding mechanism for providing the printing material for the printing area, and feeding information carried by the feeding mechanism; determining the printing material information based on the feeding information; acquiring wavelength matching information indicating the matching relationship between the printing material and the corresponding wavelength; and determining the wavelength control information based on the printing material information and the wavelength matching information.

18. The method of claim 15, wherein, Controlling the light source mechanism to perform light emission operation on the printing area based on the wavelength indicated by the wavelength control information comprises: controlling the corresponding first light emitting element or second light emitting element to emit light based on the determined wavelength control information; wherein the light source mechanism at least includes a first light emitting element and a second light emitting element, and the first light emitting element and the second light emitting element are used to emit light of different wavelengths.

19. The method of claim 17, wherein, The feeding mechanism carries the feeding information by at least one of the following ways: NFC module, Bluetooth module, RFID tag or electronic tag.

20. A three-dimensional printing apparatus, wherein, The three-dimensional printing method of any one of claims 15-19 comprises: a forming platform for attaching a target three-dimensional object; a construction surface, the forming platform and the construction surface defining a printing area therebetween, the printing area being used to fill printing material; a controller in communication connection with a light source mechanism, for determining wavelength control information matched with the printing material information; the light source mechanism can emit light of multiple wavelengths, and the light source mechanism is used to perform light emission operation on the printing area based on the wavelength indicated by the wavelength control information, so that at least part of the printing material forms the target three-dimensional object on the forming platform.

21. The three-dimensional printing device of claim 20, wherein, The light source assembly included in the light source mechanism is provided with a plurality of light emitting elements, and the plurality of light emitting elements are respectively used to emit light of different wavelengths. The light source mechanism is further used to control the plurality of light emitting elements to perform light emission operation on the printing area based on the wavelength indicated by the wavelength control information.

22. The three-dimensional printing device of claim 21, wherein, The plurality of light emitting elements are packaged in a linear arrangement and / or a matrix arrangement.

23. The three-dimensional printing device of claim 20, wherein, The light source mechanism is provided with a movable light path changing component for changing a light path trajectory of light emitted by the light source mechanism, wherein The controller is further configured to determine a movement control strategy for the light path changing component based on the wave band indicated by the wave band control information. The light source mechanism is further configured to control the light source component included in the light source mechanism to emit light of the wave band indicated by the wave band control information to the printing area through the light path changing component. The light path changing component executes the movement control strategy in at least one of the following ways: rotation, linear translation, and non-linear translation.

24. The three-dimensional printing device of claim 23, wherein, 25. The three-dimensional printing device of claim 23, wherein In the case of multiple light source mechanisms, each of the multiple light source mechanisms includes at least one light emitting element corresponding to one wave band, and the at least one wave band belongs to the multiple wave bands. In the case of a single light source mechanism, the single light source mechanism includes light emitting elements corresponding to the multiple wave bands respectively. The light source mechanism further includes an optical device disposed on the target light path, and the optical device includes a digital micromirror device, a liquid crystal on silicon panel, or a transmission liquid crystal panel.

26. The three-dimensional printing device of claim 20, wherein, The three-dimensional printing device comprises:

27. A three-dimensional printing device, wherein, a strategy determination module configured to determine wave band control information matched with the printing material information; a light emitting control module configured to control the light source mechanism to perform light emission operation on the printing area based on the 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 the forming platform, wherein the light source mechanism is capable of emitting light of multiple wave bands. The non-volatile storage medium stores a plurality of instructions adapted to be loaded and executed by the processor to implement the three-dimensional printing method of any one of claims 15 to 19.

28. A non-volatile storage medium, wherein, The three-dimensional printing device comprises:

29. An electronic device, comprising: one or more processors and a memory configured 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 implement the three-dimensional printing method of any one of claims 15 to 19. ​

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