CN109130174A - Optical system, control method and system, 3D printing equipment - Google Patents

Optical system, control method and system, 3D printing equipment Download PDF

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Publication number
CN109130174A
CN109130174A CN201810942310.3A CN201810942310A CN109130174A CN 109130174 A CN109130174 A CN 109130174A CN 201810942310 A CN201810942310 A CN 201810942310A CN 109130174 A CN109130174 A CN 109130174A
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CN
China
Prior art keywords
mask
mask images
optical system
light
wave band
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810942310.3A
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Chinese (zh)
Inventor
王金成
于清晓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI UNION TECHNOLOGY Co Ltd
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SHANGHAI UNION TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI UNION TECHNOLOGY Co Ltd filed Critical SHANGHAI UNION TECHNOLOGY Co Ltd
Priority to CN201810942310.3A priority Critical patent/CN109130174A/en
Publication of CN109130174A publication Critical patent/CN109130174A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
    • B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
    • B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

The application provides a kind of optical system, control method and system, 3D printing equipment.Wherein optical system includes: light source unit, for providing the light radiation of multiple wave bands；Mask unit, for according to current at least one mask images of the slice graphic hotsopt of cured layer to be manufactured, wherein each mask images correspond to a wave band；Optics module, for will be irradiated to the mask unit to the light radiation of wave band corresponding to the mask images and corresponding mask images are irradiated to the printing datum level of 3D printing equipment.Optical system provided by the present application is divided or is filtered to the light radiation of multiple wave bands by optics module, and by mask unit according at least one mask images of the current slice graphic hotsopt of cured layer to be manufactured, it is thus achieved that 3D printing equipment is adapted to the demand of the photo-curing material manufacture three-dimension object of a variety of wave bands.

Description

Optical system, control method and system, 3D printing equipment
Technical field
This application involves 3D printing technique fields, more particularly to a kind of optical system, control method and system, 3D printing Equipment.
Background technique
3D printing is one kind of rapid shaping technique, it is one kind based on digital model file, with powdered gold Belong to, the adhesive materials such as plastics and resin, constructs the technology of object by layer-by-layer printing.3D printing equipment is by holding This kind of printing technique of row manufactures three-dimension object.3D printing equipment due to formed precision height, mold, goods made to order, medical jig, The fields such as prosthese, which have, to be widely applied.
The 3D printing equipment utilization material for being easily cured reaction sensitive to the light radiation of certain wave band carries out light radiation behaviour Make, is manufactured mathematical model at three-dimension object in a manner of successively cured.With the increase of photo-curing material type applicatory, All kinds of photo-curing materials are not quite identical by the light radiation wave band of photocuring.Therefore the light radiation of single wave band can not adapt to difference The solidifying requirements of photo-curing material.In actual use, different 3D printing equipment need to be configured for different materials, this is to using It is high-cost for person.
Summary of the invention
In view of the foregoing deficiencies of prior art, the application is designed to provide a kind of optical system, control method And system, 3D printing equipment, light radiation wave band can not be replaced for solving 3D printing equipment in the prior art adaptively to be made The problem of photo-curing material.
In order to achieve the above objects and other related objects, the first aspect of the application provides a kind of optical system, is used for 3D Printing device, comprising: light source unit, for providing the light radiation of multiple wave bands；Mask unit, for according to current to be manufactured solid Change at least one mask images of the slice graphic hotsopt of layer, wherein each mask images correspond to a wave band；Optics module is used for The mask unit will be irradiated to the light radiation of wave band corresponding to the mask images and be irradiated to corresponding mask images On the printing datum level of 3D printing equipment.
In the certain embodiments of first aspect, the light source unit includes: alternative light source；The optics module position In the light radiation for separating corresponding wave band on the alternative light source emitting light path from multispectral light radiation.
In the certain embodiments of first aspect, the optics module includes: spectral module, is used for from alternative light source The light radiation of preset multiple wave bands is separated in the light radiation of outgoing and shines separated light radiation from individual light splitting optical path It is incident upon the mask unit；Projection module, for will project via the light radiation of mask unit to the printing base of 3D printing equipment On quasi- face；Wherein, the spectral module is between light source unit and mask unit, or is located at mask unit and projection module Between.
In the certain embodiments of first aspect, the spectral module includes: optical filter, grating, in dichronic mirror extremely Few one kind.
In the certain embodiments of first aspect, the mask unit includes the mask artwork for being located at each light splitting optical path As generation module；Wherein, according to wave band corresponding to the slice figure, at least one described mask images generation module is generated The mask images of corresponding wave band.
In the certain embodiments of first aspect, the light source unit includes multiple light sources, and each light source is along different points Light optical path issues light radiation；The light radiation of each light splitting optical path is converged to the mask unit by the optics module.
In the certain embodiments of first aspect, different light sources provide the light radiation or multiple light sources of different-waveband Collaboration provides multiple and different wave bands.
In the certain embodiments of first aspect, the optics module includes lens, prism, reflecting mirror, spectroscope, gathers The combination of at least one of light pipe.
In the certain embodiments of first aspect, the mask unit includes mask images generation module, according to being connect The wave band of the light radiation of receipts generates corresponding mask images.
In the certain embodiments of first aspect, the optics module includes: filtration module, for filtering and to described The light radiation of mask unit projection and wave band corresponding to mask images to be projected；Projection module, being used for will be via mask list The light radiation of member is projected to the printing datum level of 3D printing equipment.
In the certain embodiments of first aspect, the mask images generation module is based on light transmissive mask images Generation module and/or the mask images generation module reflected based on light.
In the certain embodiments of first aspect, the optical system further include: ray machine control unit, with the mask Unit connection, generates at least one mask images for controlling the mask unit, wherein mask images generated are to be based on The slice figure of current cured layer to be manufactured and generate.
In the certain embodiments of first aspect, the ray machine control unit is used for according to the slice figure and is connect The mask properties information of receipts controls the mask cell and generates at least one mask images.
The application second aspect provides a kind of optical system, comprising: light source unit, for providing the light spoke of multiple wave bands It penetrates；Mask unit, for generating at least one mask images, wherein each mask images correspond to a wave band；Optics module is used In will be irradiated to the mask unit to the light radiation of wave band corresponding to the mask images and irradiate corresponding mask images Onto the printing datum level of 3D printing equipment；Ray machine control unit, for the slice figure control according to current cured layer to be manufactured Make the mask unit simultaneously or according to sequentially generating at least one mask images.
In the certain embodiments of second aspect, the ray machine control unit is used for the pixel according to the slice figure The slice figure is resolved at least one mask images by the received mask properties information of value or institute.
It include a mask images generation module in the mask unit in the certain embodiments of second aspect；Institute It states ray machine control unit and also controls light source unit or optics module and cover the light radiation of wave band corresponding with mask images via described Mould image generation module is irradiated on the printing datum level.
In the certain embodiments of second aspect, the light source unit includes multiple light sources；The ray machine control unit The light intensity of at least one light source is adjusted according to wave band corresponding with mask images, or controls at least one light source and is turned on or off.
In the certain embodiments of second aspect, the light source unit includes alternative light source；The ray machine control is single Filter module in member control optics module provides the light radiation of wave band corresponding with mask images.
It include multiple mask images generation modules in the mask unit, respectively in the certain embodiments of second aspect Mask images generation module is located on the light splitting optical path of different-waveband；The ray machine control unit is located at corresponding according to wave band control Mask images generation module on light splitting optical path generates corresponding mask images, and controls other mask images generation modules to institute Received light radiation carries out extinction processing.
The application third aspect provides a kind of control method of optical system, is used for 3D printing equipment, comprising: obtains current The slice figure and mask properties information of cured layer to be manufactured；It will corresponding wave according to mask properties information control optical system The light radiation of section is irradiated on printing datum level via corresponding mask images, to obtain manufactured pattern cured layer；Wherein, institute Stating mask images is to be formed the slice graphics process based on the mask properties information；According to 3D model to be manufactured It successively adjusts the slice figure of current cured layer to be manufactured and repeats the above process so that every layer pattern cured layer is accumulated and obtained Corresponding three-dimension object.
It is described to correspond to wave band according to mask properties information control optical system in the certain embodiments of the third aspect Light radiation via the step that corresponding mask images are irradiated on printing datum level include: according to slice figure and mask properties letter The slice figure is resolved at least one mask images by breath, and the control optical system generates each mask images.
It include mask images generation module, a light in the optical system in the certain embodiments of the third aspect Source unit and optics module；It is described to control optical system according to mask properties information the light radiation of wave band corresponded to via correspondence The step that mask images are irradiated on printing datum level includes: that the control mask images generation module generates a mask artwork Picture；The light radiation of the light source unit or optics module by wave band corresponding with mask images generated is controlled via the mask Image generation module is irradiated on the printing datum level；According to the quantity of mask images generated, repeat the above steps straight To the irradiation for completing all mask images.
In the certain embodiments of the third aspect, the light source unit includes multiple light sources；The control light source unit Or the light radiation of wave band corresponding with mask images generated is irradiated to by optics module via the mask images generation module Step on the printing datum level includes: the light that at least one light source is adjusted according to wave band corresponding with mask images generated By force, it or controls at least one light source and is turned on or off.
In the certain embodiments of the third aspect, the light source unit includes white light source；The light source unit or light The light radiation of wave band corresponding with mask images generated is irradiated to described by mould group via the mask images generation module Step on printing datum level includes: the filtration module in control optics module to provide the light spoke of wave band corresponding with mask images It penetrates.
It include multiple mask images generation modules in the optical system, respectively in the certain embodiments of the third aspect Mask images generation module is located on the light splitting optical path of different-waveband；It is described to control optical system according to mask properties information to incite somebody to action The light radiation of corresponding wave band includes: the control mask images via the step that corresponding mask images are irradiated on printing datum level Generation module generates a mask images；It is generated according to mask properties information control bits in the mask images on corresponding light splitting optical path Module generates corresponding mask images, and controls other mask images generation modules and carry out at extinction to the received light radiation of institute Reason.
The application fourth aspect provides a kind of control system of optical system, comprising: storage unit, for store currently to The slice figure and mask properties information of manufacture cured layer and at least one program；Processing unit, with the storage unit phase Even, for transferring at least one described program and executing the control method as described in any in the third aspect, to control the optics System carries out light radiation.
The 5th aspect of the application provides a kind of 3D printing equipment, comprising: the light as described in any in first or second aspect System；Molding room, for holding photo-curing material；Component platform, for adhering to and accumulating cured pattern cured layer；Z Axis driving mechanism, for driving the component platform to move along the vertical direction in the pattern solidification layer surface filling light accumulated Curing materials；Control device is connected with the optical system and Z axis driving mechanism, for based in threedimensional model to be manufactured Each slice figure and mask properties information control the optical system, and based on corresponding to each slice map in the threedimensional model The layer height of shape controls Z axis driving mechanism, so that the light that the optical system and Z axis driving mechanism successively solidify printing datum level is solid Change material to manufacture corresponding three-dimension object.
As described above, the application is for photocuring wave band corresponding to different types of photo-curing material in 3D printing equipment Different problems, the optical system provided are divided or are filtered to the light radiation of multiple wave bands by optics module, and by covering Form unit is according at least one mask images of the current slice graphic hotsopt of cured layer to be manufactured, so that arriving through mask image projection The photo-curing material of printing datum level is cured into the pattern cured layer spliced by each mask images, it is thus achieved that 3D printing is set The demand of the standby photo-curing material manufacture three-dimension object for being adapted to a variety of wave bands.In addition, being controlled via the ray machine in optical system single First (i.e. control system) sequentially or simultaneously projects multiple mask images can meet three-dimension object different structure region for greater flexibility Architectural characteristic and different structure region materials variances.
Detailed description of the invention
Fig. 1 is shown as the structural schematic diagram of the application 3D printing equipment in one embodiment.
Fig. 2 is shown as the structural schematic diagram of the application 3D printing equipment in yet another embodiment.
Fig. 3 is shown as the structural schematic diagram of the application optical system in one embodiment.
Fig. 4 is shown as the structural schematic diagram of the application optical system in yet another embodiment.
Fig. 5 is shown as the structural schematic diagram of the application optical system in another embodiment.
Fig. 6 is shown as structural schematic diagram of the application optical system in a further embodiment.
Fig. 7 is shown as the flow chart of the control method of the application optical system in one embodiment.
Specific embodiment
Presently filed embodiment is illustrated by particular specific embodiment below, those skilled in the art can be by this explanation Content disclosed by book understands other advantages and effect of the application easily.
In described below, with reference to attached drawing, attached drawing describes several embodiments of the application.It should be appreciated that also can be used Other embodiments, and can be carried out without departing substantially from spirit and scope of the present disclosure mechanical composition, structure, electrically with And operational change.Following detailed description should not be considered limiting, and the range of embodiments herein Only limited by the claims for the patent announced
Furthermore as used in herein, singular " one ", "one" and "the" are intended to also include plural number shape Formula, unless there is opposite instruction in context.It will be further understood that term "comprising", " comprising " show that there are the spies Sign, step, operation, element, component, project, type, and/or group, but it is not excluded for one or more other features, step, behaviour Presence, appearance or the addition of work, element, component, project, type, and/or group.Term "or" used herein and "and/or" quilt It is construed to inclusive, or means any one or any combination.Therefore, " A, B or C " or " A, B and/or C " mean " with Descend any one: A；B；C；A and B；A and C；B and C；A, B and C ".Only when element, function, step or the combination of operation are in certain sides When inherently mutually exclusive under formula, it just will appear the exception of this definition.
Optical system in 3D printing equipment is used to be emitted the light radiation of a wave band on photo-curing material, utilizes light radiation Energy-curable irradiated area photo-curing material.By means of which, 3D printing equipment according to 3D model slice figure Light beam is projected on photo-curing material, so that the photo-curing material for being projected radiation is cured into, it is corresponding to obtain Pattern cured layer.For this purpose, referring to Fig. 1, a kind of its structural schematic diagram for being shown as 3D printing equipment, optical system are beaten positioned at 3D The top of the molding room of photo-curing material is held in printing apparatus, to be located at the photo-curing material on surface in curing molding room.It please join Fig. 2 is read, another structural schematic diagram of 3D printing equipment is shown as, optical system, which is located in 3D printing equipment, holds photocuring The lower section of the molding room of material, to be located at the photo-curing material of molding room bottom surface in curing molding room.
In order to adapt to solidify the photo-curing material of a variety of spectral coverages, optical system provided herein is not limited to use in above-mentioned Any 3D printing equipment.The optical system includes: light source unit, mask unit and optics module.
The light source unit is for providing the light radiation of multiple wave bands.Wherein, the wave band of the light radiation can be according to being used for The solidification wave band of photo-curing material and be arranged, or be the light radiation of full spectrum.Wherein, the wave band is to make photo-curing material Cured spectral band.Such as 355nm, 385nm, 405nm, 780nm etc..
It should be noted that even if such as 385nm, 405nm belong to the light radiation of blue spectrum, since institute is curable Photo-curing material is not exactly the same, therefore we belong to the broad spectrum light source that can provide blue spectrum can provide multiple wave bands Light source unit.
It may include that at least one can provide the light source of multiple wave bands in the light source unit.For example, the light source unit packet Containing an alternative light source, such as white light source or blue light source.For another example, the light source unit includes multiple light sources, wherein every A light source can be the laser light source of single wave band, and each light source correspond to the wave band that the light source unit can be provided, or by Multiple light sources collaboration provides the wave band that the light source unit can be provided.
The mask unit is used for according at least one mask images of the current slice graphic hotsopt of cured layer to be manufactured, In the corresponding wave band of each mask images.
Here, the mask unit is presented under the control of electric signal according to each slice figure of 3D model to be manufactured The image of part in the image of the slice figure or the slice figure, so that the light radiation of single wave band is via being presented On image illumination to photo-curing material, to obtain corresponding pattern cured layer.In some instances, in the cross of manufacture three-dimension object When section, at least piece image can be presented controllably to be combined into a complete slice figure in the mask unit.For example, making When making the transversal layer comprising support construction and main structure, corresponding branch in slice figure will can be sequentially presented in the mask unit The image of the image of support structure and corresponding main structure.
Wherein, the mask unit includes at least one mask images generation module, and each mask image generation module is pressed According to the wave band of received light radiation generate corresponding mask images.Wherein, it is being emitted according to the mask image generation module Position in optical path, the mask images generation module be based on light transmissive mask images generation module and/or based on light it is anti- The mask images generation module penetrated.Wherein, described that liquid crystal display is included based on the citing of light transmissive mask images generation module；It is described Mask images generation module citing based on light reflection includes DMD (Digital Micromirror Device) chip.
Here, each mask images generation module and optics module are equipped with going out in light source unit in the mask unit It penetrates in optical path.Wherein, the optics module is used to that described cover will to be irradiated to the light radiation of wave band corresponding to the mask images Form unit and corresponding mask images are irradiated on the printing datum level of 3D printing equipment.Wherein, the printing datum level is Light radiation is irradiated on photo-curing material with plane where cured pattern cured layer.With its printing of 3D printing equipment shown in FIG. 1 Datum level is exemplified as the horizontal plane of photo-curing material.With 3D printing equipment shown in Fig. 2, prints datum level and be exemplified as molding room Inside hold the container interior bottom surface of photo-curing material.
According to the light-source structure of the light source unit, the optics module can provide individually for the light radiation of each wave band Optical path；Or the optics module provides at least partly public optical path for the light radiation of each wave band and uses time-sharing multiplex machine The light radiation for being made as each wave band, which provides, solidifies required optical radiation energy.It is set as a result, according to the light channel structure of the optics module Set each mask images generation module.The optical unit, optics module and mask unit will be in subsequent illustrations.
Based on the above-mentioned optical system referred to, in some embodiments, the optics in optical system provided by the present application Unit includes alternative light source.The alternative light source is exemplified as white light or broad spectrum light source.
Accordingly, the optics module is located on the alternative light source emitting light path to separate from multispectral light radiation The light radiation of corresponding wave band.Wherein, the optics module can be used the modes such as path-splitting or optical filtering and extract from alternative light source Be consistent the light radiation of wave band with photo-curing material to be manufactured, and passes through the optics tune such as the expanding of optics module, even light, focusing It is whole, the light radiation of corresponding wave band is irradiated on printing datum level.
In some embodiments, the optics module includes: spectral module and projection module.The mask unit includes point Not Wei Yu each light splitting optical path mask images generation module.
Wherein, the spectral module is used to separate the light of preset multiple wave bands from the light radiation that alternative light source is emitted It radiates and separated light radiation is exposed into the mask unit from individual light splitting optical path.Here, in order to separate different waves The light radiation of section, the spectral module include but is not limited at least one of optical filter, grating, dichronic mirror etc. for that will preset The optical device that the light radiation of wave band is separated from multispectral light radiation, the spectral module can also include prism and reflecting mirror At least one of the equal optical device that the overall size of optical system is reduced for changing optical path.When alternative light source irradiation light When radiation, by the light-splitting processing of the spectral module, covered according to wave band corresponding to the slice figure, described at least one Mould image generation module generates the mask images of corresponding wave band so that the light radiation of corresponding light splitting optical path is irradiated, via light splitting optical path Light radiation irradiation light radiation with the shape of mask images via projection module project printing datum level on.Wherein, described Projection module includes convergence component and projection lens.The convergence component is used for will be graphical via each mask images generation module Light radiation afterwards converges to projection.Wherein, the convergence component can will be graphical by spectral module at least partly optical device Light radiation afterwards converges to projection lens.The projection lens is used to throw the mask images by the light radiation after graphical On shadow to printing datum level.
For example, referring to Fig. 3, it is shown as structural schematic diagram of the optical system in a specific example.Light source unit 31 Include alternative light source.The spectral module 32 includes reflecting mirror, prism, dichronic mirror.It includes total with spectral module for converging component Prism and dichronic mirror.Mask images generation module on each light splitting route is dmd chip (DMD1, DMD2, DMD3). Wherein, the reflecting mirror, prism and dichronic mirror are put according to predetermined angle so that spectral module 32 and convergence component share optics Device.By different-waveband when the multiwave light radiation that alternative light source is emitted successively enters prism and dichronic mirror through reflecting mirror On separation to independent light splitting optical path, the dmd chip positioned at each light splitting optical path is during alternative light source irradiation, according to generated Mask images reflect the light radiation of corresponding wave band, and the successively converged light through the dichronic mirror, prism by patterned light radiation Road converges at projection lens 331, and is irradiated on printing datum level with cured pattern cured layer.
For another example, referring to Fig. 4, it is shown as structural schematic diagram of the optical system in another specific example.The light splitting Module 42 includes optical filter, dichronic mirror, reflecting mirror.The convergence component includes X-type cube.Covering on each light splitting route Mould image generation module is liquid crystal display.Light radiation of the light radiation that alternative light source is emitted after spectral module is divided is irradiated to On liquid crystal display, positioned at each path-splitting through upper liquid crystal display alternative light source irradiation during, it is saturating according to mask images generated The light radiation of corresponding wave band is penetrated, and patterned light radiation is successively converged at projection lens through converging component, and irradiation With cured pattern cured layer on to printing datum level.
In further embodiments, referring to Fig. 5, it is shown as optical system provided by the present application in one embodiment Structural schematic diagram.The optics module includes: filtration module 52 and projection module 53.Wherein, the filtration module 52 was used for It filters and projects the light radiation with wave band corresponding to mask images to be projected to the mask unit 54.The mask unit 54 In filtered optical path, patterned light radiation is projected on projection module 53.
Wherein, the filtration module 52 includes optical filter, lens group.The optical filter is spelled by the filter segments of multiple wave bands It connects, the optical filter, which is driven motor control, to be located in the optical path of light radiation by the filter segments for adjusting different-waveband. The optical filter is located at front end, middle part or the rear end of lens group.The lens group include but is not limited to beam expanding lens, relay optic, At least one of reflecting mirror etc..The mask cell is located on the emitting light path of the lens group.In the example illustrated in fig. 5, The mask cell be dmd chip, dmd chip also also serve as reflecting mirror with reduce number of optical devices and shorten light radiation stroke, And patterned light radiation is projected on projection module to be projected on printing datum level by lens module.
In other embodiments, the optical unit in optical system provided by the present application includes multiple light sources, each Light source issues light radiation along different light splitting optical paths.Wherein, each light source is exemplified as single band laser light source.For this purpose, different light sources The light radiation or multiple light sources collaboration for providing different-waveband provide multiple and different wave bands.For example, utilizing red spectral band and green light The light source of wave band assists to provide the light radiation of yellow band.
To converge to the light radiation of different light sources in one optical path, the optics module can utilize lens, prism, reflection The combination of at least one of mirror, spectroscope, condenser tube ferrule carries out the optical path adjustment of respective light radiation.Wherein, using reflecting mirror, point Light microscopic, prism etc. change optical path, and are expanded using condenser tube ferrule, lens etc..Mask images in the mask unit are raw At module according to the wave band of received light radiation generate corresponding mask images.Here, the mask images generation module can On the individual light splitting optical path of each light source.For reduce light diffusion, after the mask images generation module is arranged on convergence Optical path on, then through projection module project to printing datum level on.
In one embodiment, referring to Fig. 6, it is shown as the knot of the optical system comprising multiple light sources in one embodiment Structure schematic diagram.Wherein, the optical device group for light source A, B and C being converged in the optics module includes reflecting mirror, spectroscope, optically focused Pipe, lens group, prism group etc..Dmd chip is arranged in the optical path using prism group manufacture, to be irradiated on dmd chip Patterned light radiation is irradiated on projection module by light radiation through prism group.
On exemplary basis shown in Fig. 6, the optical system can also be comprising the filtration module that refers in aforementioned exemplary (not Give diagram).The filtration module may be provided in the optical path of convergence, need wave band to filter out when multiple light sources, which cooperate with, irradiates Light radiation.
From above-mentioned each example using the optical system of alternative light source or multiple light sources, the mask unit is generated Mask images should match with current light radiation wave band to be manufactured.For this purpose, in some embodiments, the optical system In be additionally provided with ray machine control unit.The ray machine control unit is connect with the mask unit, for controlling the mask unit The mask images for generating the slice figure based on current cured layer to be manufactured and generating.Here, the ray machine control unit is to covering The control of form unit is all based on acquired slice figure and mask properties information.Wherein, the slice figure is to be manufactured It is obtained after the layered processing of 3D model, when 3D printing equipment successively solidifies the corresponding layering of 3D model, the control system System obtains the slice figure of cured layer to be manufactured from the control device of 3D printing equipment, and current slice figure is projected to and is beaten It prints on datum level.The mask properties information is typically based on used photo-curing material and sets, and manufactures a 3D model Select unified mask properties information.In some instances, used photo-curing material is mixture, the mask properties letter Comprising corresponding to the region and corresponding wave band that different-waveband can be cured in each slice figure in breath, the control system is based on The mask properties information carries out division processing to slice figure, to obtain the control of multiple mask images or 3D printing equipment The mask images divided based on mask properties information and its corresponding wave band are supplied to the control system by device processed, in this way, Mask properties information acquired in the control system includes being currently used in each wave corresponding to splicing slice figure mask images Section.In addition to this, the mask properties information can also include the unit being arranged based on wave band corresponding to photo-curing material The high optical radiation energy of layer, to control irradiation duration or irradiation power of the irradiation optical system based on corresponding wave band.
Here, at least one mask images generation module in the ray machine control unit control mask unit is presented accordingly Mask images.Wherein, the ray machine control unit includes but is not limited to industrial personal computer or any can hold comprising CPU or MCU etc. The electronics computing module of the programs such as row logical operation, calculating, and for converting digital signals into mask images generation module The circuit module for the electric signal that can be identified.
In some instances, what the ray machine control unit received main equipment can be spliced into current slice figure at least One mask images, and control corresponding mask images generation module according to each mask images and corresponding wave band and presented. Wherein, the main equipment generates mask images according to slice figure and its mask properties information.The main equipment sets for 3D printing Control device in standby.
By taking mask images generation module is dmd chip as an example, dmd chip appearance seems an only small pieces mirror, is sealed In the confined space of metal and glass composition, in fact, this face mirror is by a micro mirror institutes hundreds of thousands of or even up to a million group At, as soon as each micro mirror represents a pixel, the image projected is made of these pixels.Dmd chip can be retouched simply The semiconductor optical switch and micromirror as corresponding pixel points are stated, the ray machine control unit makes by controlling dmd chip Each photoswitch therein carrys out each microwafer reflected light of Enable/Disable, and a mask images are made of the microwafer of permission reflected light.
By taking mask images generation module is liquid crystal display as an example, the electrod-array of clamping liquid crystal molecule is dispersed on liquid crystal display, Each electrode represents a pixel.The ray machine control unit permits each electrod-array therein by controlling liquid crystal display Perhaps/and forbid liquid crystal molecule light transmission between each pole plate/opaque, a mask images are made of the electrode of permission light transmission.
In other examples, the ray machine control unit be from equipment, the slice figure that is provided according to main equipment and Mask properties information relevant to mask images are generated, controls the mask cell and generates at least one mask images.
In some more specific examples, the ray machine control unit generates at least one according to the pixel value of the slice figure A mask images.
Here, the corresponding relationship of the ray machine control unit pre-set image pixel value and wave band, uses pixel for acquired The slice figure of value description is resolved by least one mask images of the pixel value description of corresponding different-waveband, and controls correspondence Mask images generation module generate mask images.
In other more specific examples, the ray machine control unit generates at least according to the received mask properties information of institute One mask images.Wherein, the mask properties information includes but is not limited to be sliced wave band corresponding to each region of figure.Its In, the mode that slice figure divides each region includes but is not limited to following at least one: based on main graph region and support figure Shape region and the partition information being arranged, the corresponding relationship based on slice figure different zones and optical radiation energy and be arranged Partition information, the partition information being arranged based on slice figure different zones and the corresponding relationship for radiating duration etc. Deng.The mask properties information further includes following any: the corresponding relationship of pixel grey scale and wave band based on light radiation is based on Wave band and the corresponding relationship of photo-curing material etc..For example, the ray machine control unit is according to preset pixel grey scale and light radiation Acquired slice figure is resolved into multiple mask images by the corresponding relationship of energy, and is controlled accordingly according to preset wave band Mask image generation module sequentially generates each mask images.
The mode that mask images are generated based on ray machine control unit control mask images generation module, in some embodiments In, the ray machine control unit can control each mask images generation module simultaneously and generate each mask images.In some instances, 3D Printing device uses the mixing material of a variety of photo-curing materials, and one of the various photo-curing materials are based on different-waveband and generate solidification Reaction, the ray machine control unit by the mask images of each wave band of correspondence while can be sent to phase based on the received control information of institute It answers mask images generation module to manufacture pattern cured layer on printing datum level simultaneously, so realizes the mesh of printing speed 's.
In other embodiments, the ray machine control unit generates at least one according to the mask unit is sequentially controlled A mask images.In some instances, ray machine control unit is by the multiple masks of single wave band divided based on irradiation power Image is sequentially providing to corresponding mask images generation module, one by one to manufacture corresponding pattern solidification on printing datum level Layer.
It should be noted that the selection of ray machine control unit generates accordingly simultaneously or according to timing control mask images generation module Mask images it is related to the structure of optical system.For example, optical system shown in fig. 5, since multiband light radiation can not be same When irradiate, therefore, the ray machine control unit, which is used, generates corresponding mask images according to timing control mask images generation module. For another example, optical system shown in Fig. 3, since multiband light radiation can irradiate simultaneously, the ray machine control unit can be with Using simultaneously or according to the corresponding mask images of timing control mask images generation module generation.Ray machine control unit simultaneously or according to when The example that sequence control mask images generation module generates corresponding mask images is no longer described in detail one by one.
Based on Fig. 3 and Fig. 4 be example and spread to it is such include a mask images generation module optical system, it is described Ray machine control unit also controls the light radiation of light source unit or optics module by wave band corresponding with mask images via the mask Image generation module is irradiated on the printing datum level.For this purpose, the ray machine control unit also with light source unit or optical mode Group has electrical connection.
For the optical system for the wave band that matched using filter module selection with photo-curing material, ray machine control unit Control filter module filters out the light radiation for the wave band that matches, and control mask images generation module generates the corresponding wave band Mask images enable 3D printing equipment to solidify corresponding photo-curing material.By taking Fig. 5 as an example, the ray machine control unit control Filter module in optics module processed provides the light radiation of wave band corresponding with mask images, and is irradiated in light radiation with current band Period controls mask images generation module and generates corresponding mask images, so as to by the mask image projection to printing datum level On.
For the optical system using multiple light sources and single mask image generation module, ray machine control unit according to The wave band that photo-curing material matches controls corresponding light source irradiation and control mask images generation module generates the corresponding wave The mask images of section.In some instances, the ray machine control unit adjusts at least one according to wave band corresponding with mask images The light intensity of light source.For example, ray machine control unit according to received pattern cured layer to be manufactured layer is high, optical radiation energy or Light radiation duration adjusts the light intensity of respective sources.For another example, the ray machine control unit is according to preset each wave band and each light source The corresponding relationship of light intensity adjusts the light intensity of corresponding multiple light sources so that converging the light radiation in optical path includes required wave band, such as This, the corresponding control mask images generation module of ray machine control unit generates corresponding mask images, utilizes corresponding wave band to realize Light radiation projects the mask images on printing datum level.
For the optical system using multiple light sources and multiple mask images generation modules, each mask images generate mould Block is located on the light splitting optical path of different-waveband.The ray machine control unit is located at covering on corresponding light splitting optical path according to wave band control Mould image generation module generates corresponding mask images, and control other mask images generation modules to the received light radiation of institute into The processing of row extinction.By taking Fig. 3 as an example, the mask images generation module on each light splitting optical path is dmd chip, and ray machine control unit is based on Acquired mask properties information selects the mask images generation module DMD1 on corresponding wave band light splitting optical path to generate mask images, And control DMD2 and DMD3 refuses the light radiation reflected on corresponding light splitting optical path, to make extinction processing, so that projection module institute The image of projection is only the mask images reflected via DMD1.Similar with Fig. 3, the mask images in Fig. 4 on each light splitting optical path are raw It is liquid crystal display at module, ray machine control unit selects the liquid on corresponding wave band light splitting optical path based on acquired mask properties information Crystalline substance screen 1 generates mask images, and control liquid crystal display 2 and liquid crystal display 2 do not transmit the light radiation on corresponding light splitting optical path, to inhale Light processing, so that the image that projection module is projected is only the mask images transmitted via liquid crystal display 1.
Based on optical system provided by above-mentioned each example, the application also provides a kind of control system of optical system.Institute Stating control system includes storage unit and processing unit.Wherein, the storage unit may include high-speed random access memory, and And optionally further comprising nonvolatile memory, such as one or more disk storage equipments, flash memory device or other are non-volatile Property solid-state memory device.The storage unit further includes Memory Controller, wherein the other assemblies of control system such as CPU And peripheral interface, the access of memory is controlled alternately through Memory Controller.The processing unit and the storage Unit is connected.The processing unit includes processor, and the processor is operationally set with memory and/or non-volatile memories Standby coupling.More specifically, the instruction stored in memory and/or non-volatile memory device can be performed to calculate in processor Operation is executed in equipment, such as generates image data and/or image data is transferred to electronic console.In this way, processor can It is patrolled including one or more general purpose microprocessors, one or more application specific processors (ASIC), one or more field-programmables Collect array (FPGA) or any combination of them.
The storage unit is used to store the slice figure and mask properties information of current cured layer to be manufactured, and at least One program.The processing unit is used to transfer at least one described program and executes the control method of process as shown in Figure 7, with It controls the optical system and carries out light radiation.Here, the control system can correspond to the aforementioned ray machine control unit referred to.
In step s 110, the slice figure and mask properties information of current cured layer to be manufactured are obtained.
Here, the slice figure be the layered processing of 3D model to be manufactured after it is obtained, when 3D printing equipment by When layer solidifies the corresponding layering of 3D model, the control device of the control system from 3D printing equipment obtains cured layer to be manufactured It is sliced figure, current slice figure is projected on printing datum level.The mask properties information, which is typically based on, to be used Photo-curing material and set, manufacture the unified mask properties information of a 3D model selection.In some instances, it is used Photo-curing material be mixture, comprising corresponding to what different-waveband can be cured in each slice figure in the mask properties information Region and corresponding wave band, the control system are based on the mask properties information and carry out division processing to slice figure, with Obtain the control device of multiple mask images or 3D printing equipment by the mask images divided based on mask properties information and It corresponds to wave band and is supplied to the control system, in this way, mask properties information acquired in the control system includes current use Each wave band corresponding to splicing slice figure mask images.In addition to this, the mask properties information can also include being based on Wave band corresponding to photo-curing material and the high optical radiation energy of the Institutional Layer that is arranged are based on pair to control irradiation optical system Answer the irradiation duration or irradiation power of wave band.
In the step s 120, the light radiation of wave band will be corresponded to via right according to mask properties information control optical system Mask images are answered to be irradiated on printing datum level, to obtain manufactured pattern cured layer.Wherein, the mask images are to be based on The mask properties information forms the slice graphics process.
In some instances, the control system receives at least one that can be spliced into current slice figure of main equipment Mask images and mask properties information, and the corresponding mask images generation module of control are presented.Wherein, the main equipment is pressed Mask images are generated according to slice figure and its mask properties information.The main equipment is the control device in 3D printing equipment.
By taking mask images generation module is dmd chip as an example, the control system is made wherein by controlling dmd chip Each photoswitch carry out each microwafer reflected light of Enable/Disable, a mask images are made of the microwafer of permission reflected light.
By taking mask images generation module is liquid crystal display as an example, the control system is made therein by control liquid crystal display Each electrod-array carrys out the liquid crystal molecule light transmission between each pole plate of Enable/Disable/opaque, constitutes one by the electrode of permission light transmission and covers Mould image.
In other examples, the slice figure and mask properties information that the control system is provided according to main equipment will The slice figure resolves at least one mask images, and the control optical system generates each mask images.
In some more specific examples, the control system generates at least one according to the pixel value of the slice figure and covers Mould image.
Here, the corresponding relationship of the control system pre-set image pixel value and wave band, is retouched acquired with pixel value The slice figure stated is resolved by least one mask images of the pixel value description of corresponding different-waveband, and controls corresponding cover Mould image generation module generates mask images.
In other more specific examples, the control system generates at least one mask according to the mask properties information Image.Wherein, the mask properties information includes but is not limited to be sliced wave band corresponding to each region of figure.Wherein, slice map The mode that shape divides each region includes but is not limited to following at least one: being set based on main graph region and support graphics field The partition information set, the region division being arranged based on the corresponding relationship for being sliced figure different zones and optical radiation energy are believed Breath, the partition information etc. being arranged based on slice figure different zones and the corresponding relationship for radiating duration etc..The mask Attribute information further includes following any: the corresponding relationship of pixel grey scale and wave band based on light radiation, solid based on wave band and light Change the corresponding relationship etc. of material.For example, corresponding relationship of the control system according to preset pixel grey scale and optical radiation energy Acquired slice figure is resolved into multiple mask images, and controls corresponding mask image according to preset wave band and generates mould Block sequentially generates each mask images.
The control system control optical system generates the mode of mask images, in some embodiments, the control System can control each mask images generation module in optical system simultaneously and generate each mask images.In some instances, 3D printing Equipment uses the mixing material of a variety of photo-curing materials, and one of the various photo-curing materials are based on different-waveband and generate solidification instead Answer, the control system can based on received control information the mask images of each wave band of correspondence are sent to corresponding mask simultaneously Image generation module so realizes the purpose of printing speed to manufacture pattern cured layer on printing datum level simultaneously.
In other embodiments, the control system is covered according to sequentially controlling the mask unit and generate at least one Mould image.I.e. by executing following steps: controlling the mask images generation module and generate a mask images；Control the light Source unit or optics module are by the light radiation of wave band corresponding with mask images generated via the mask images generation module It is irradiated on the printing datum level；According to the quantity of mask images generated, repeat the above steps until completing all cover The irradiation of mould image.In some instances, control system is by the multiple mask artworks of single wave band divided based on irradiation power As being sequentially providing to corresponding mask images generation module, one by one to manufacture corresponding pattern solidification on printing datum level Layer.
It should be noted that control system selection is covered accordingly simultaneously or according to the generation of timing control mask images generation module Mould image is related to the structure of optical system.For example, optical system shown in fig. 5, since multiband light radiation can not shine simultaneously It penetrates, therefore, the control system, which is used, generates corresponding mask images according to timing control mask images generation module.For another example, Fig. 3 Shown in optical system, due to multiband light radiation can irradiate simultaneously, the control system can using simultaneously or according to Timing control mask images generation module generates corresponding mask images.Control system is simultaneously or raw according to timing control mask images It is no longer described in detail one by one at the example that module generates corresponding mask images.
Based on Fig. 3 and Fig. 4 be example and spread to it is such include a mask images generation module optical system, it is described Control system also controls the light radiation of light source unit or optics module by wave band corresponding with mask images via the mask images Generation module is irradiated on the printing datum level.For this purpose, the control system is also electrically connected with light source unit or optics module It connects.
For the optical system for the wave band that matched using filter module selection with photo-curing material, control system control Filter module filters out the light radiation for the wave band that matches, and control mask images generation module generates the mask of the corresponding wave band Image enables 3D printing equipment to solidify corresponding photo-curing material.By taking Fig. 5 as an example, the control system controls optical mode Filter module in group provides the light radiation of wave band corresponding with mask images, and controls during light radiation is irradiated with current band Mask images generation module generates corresponding mask images, so as to will be on the mask image projection to printing datum level.
For the optical system using multiple light sources and single mask image generation module, control system is solid according to light Change the wave band that material matches to control corresponding light source irradiation and control the corresponding wave band of mask images generation module generation Mask images.In some instances, the control system adjusts the light of at least one light source according to wave band corresponding with mask images By force.For example, control system according to received pattern cured layer to be manufactured layer is high, optical radiation energy or light radiation duration come Adjust the light intensity of respective sources.For another example, the control system is adjusted according to the corresponding relationship of preset each wave band and each light source intensity The light intensity of corresponding multiple light sources is saved so that converging the light radiation in optical path includes required wave band, in this way, the corresponding control of control system Mask images generation module processed generates corresponding mask images, is thrown the mask images using the light radiation of corresponding wave band with realizing It is mapped on printing datum level.
For the optical system using multiple light sources and multiple mask images generation modules, each mask images generate mould Block is located on the light splitting optical path of different-waveband.The control system is located at the mask artwork on corresponding light splitting optical path according to wave band control As the corresponding mask images of generation module generation, and controls other mask images generation modules and the received light radiation of institute is inhaled Light processing.By taking Fig. 3 as an example, the mask images generation module on each light splitting optical path is dmd chip, and control system is based on acquired Mask properties information selects the mask images generation module DMD1 on corresponding wave band light splitting optical path to generate mask images, and control DMD2 and DMD3 refuses the light radiation reflected on corresponding light splitting optical path, to make extinction processing, so that the figure that projection module is projected As being only the mask images reflected via DMD1.Similar with Fig. 3, the mask images generation module in Fig. 4 on each light splitting optical path is Liquid crystal display, control system select the generation of liquid crystal display 1 on corresponding wave band light splitting optical path to cover based on acquired mask properties information Mould image, and control liquid crystal display 2 and liquid crystal display 2 do not transmit the light radiation on corresponding light splitting optical path, to make extinction processing, so that The image that projection module is projected is only the mask images transmitted via liquid crystal display 1.
In step s 130, lay equal stress on according to the slice figure that 3D model to be manufactured successively adjusts current cured layer to be manufactured Multiple above-mentioned steps S110-S120 is so that every layer pattern cured layer is accumulated and obtains corresponding three-dimension object.Here, the control system System is controlled optical system and is irradiated layer by layer to the slice figure of each layering based on the page order to 3D model, will be every A slice map shape causes corresponding pattern cured layer, by the accumulation to pattern cured layer, obtains corresponding three-dimension object.
Completely to describe the 3D printing equipment comprising above-mentioned optical system and control system, Fig. 1 and Fig. 2 are please referred to, this Shen A kind of 3D printing equipment is please also provided.The 3D printing equipment includes: optical system, molding room, component platform, Z axis driving machine Structure, control device.
The molding room is for holding photo-curing material.Wherein, the photo-curing material is exemplified as light-cured resin, or It is mixed with the light-cured resin mixture of ceramic powder etc..Wherein, the photo-curing material held can be based at least one wave band Light energy (such as 405nm) irradiation is solidified into solid.It further include having in molding room shown in Fig. 2 according to the principle successively printed The container of transparent bottom surface, with transmitted optical radiation.
The optical system is used for the photo-curing material irradiated in the container, to obtain patterned cured layer.Such as Fig. 1 Shown, the optical system is located at the upside of 3D printing equipment, and at least one mask images of photo-curing material surface projection, To manufacture patterning cured layer on photo-curing material surface.As shown in Fig. 2, the optical system is located under 3D printing equipment Side, and the container bottoms into molding room project at least one mask images, to manufacture patterning cured layer in container bottoms.Root According to the different structure of 3D printing equipment, photo-curing material surface as shown in the figure and container bottoms are referred to as printing datum level.
Optical unit, mask unit and optics module of the optical system including at least such as Fig. 3-6 and described in corresponding to.? In some embodiments, the optical system can be by the control device centralized control.In further embodiments, the optical system System further includes the aforementioned ray machine control unit referred to, and the ray machine control unit and control device data connection simultaneously receive to be manufactured Slice figure and mask properties information；Or it receives the control device and is decomposed based on slice figure and exposure mask attribute information Mask images and corresponding exposure mask attribute information, and according in optical system specific optical texture control mask list Member or even at least one of optical unit and optics module by mask image projection to printing datum level so that photocuring material Material is cured.
The component platform is for adhering to and accumulating cured pattern cured layer.Here, the component platform includes structure Part plate and the connecting component to be connect with Z axis mobile unit.The component platform is solidificated in container bottoms by successively attachment Cured layer obtain three-dimension object manufactured by 3D printing equipment.
The Z axis mobile unit is used to that the component platform to be driven to move along the vertical direction in the pattern solidification accumulated Layer surface fills photo-curing material.During printing, the Z axis mobile unit drives component platform successively to move up, with Container bottoms, which are formed, corresponding to be solidified solidifies photo-curing material high layer by layer.
Here, the Z axis mobile unit includes driving mechanism and vertical shift mechanism, the driving mechanism is for driving institute Vertical shift mechanism is stated, so that the vertical shift mechanism drives component platform lifting moving.For example, the driving mechanism is to drive Dynamic motor.The driving mechanism is controlled by control instruction.Wherein, the control instruction include: for indicate component platform rise, Decline or the directionality stopped instruction, or even can also include the parameters such as revolving speed/rotating speed acceleration or torque/torsion.So have Conducive to the distance of the rising of accurate control vertical shift unit, to realize the accurate adjusting of Z axis.Here, the vertical shift machine Structure citing includes fixed link, the biting connecions movement group fixed with the other end of fixed link that one end is fixed in the component platform Part, wherein the biting connecions moving assembly is driven moving cell driving to drive fixed link vertical shift, the mobile group of the biting connecions Part is exemplified as the limit moving assembly being engaged by dentalation, such as rack gear.For another example, the vertical shift mechanism includes: screw rod With the positioning moving structure for the screw rod that is screwed on, wherein the both ends of the screw rod are rotatably connected in driving mechanism, the positioning is mobile to be tied The epitaxial end of structure is fixedly attached in component platform, which is, for example, ball-screw.
The control device is connected with the optical system and Z axis driving mechanism, for based on threedimensional model to be manufactured In each slice figure and mask properties information control the optical system, and based on corresponding to each slice in the threedimensional model The layer height of figure controls Z axis driving mechanism, so that the optical system and Z axis driving mechanism successively solidify the light of printing datum level Curing materials are to manufacture corresponding three-dimension object.
Here, the control device includes storage unit and processing unit.Wherein, the storage unit may include high speed with Machine accesses memory, and optionally further comprising nonvolatile memory, such as one or more disk storage equipments, flash memory are set Standby or other non-volatile solid state memory equipment.The storage unit further includes Memory Controller, wherein control system Other assemblies such as CPU and peripheral interface control the access of memory alternately through Memory Controller.The processing Unit is connected with the storage unit.The processing unit includes processor, the processor operationally with memory and/or Non-volatile memory device coupling.It is stored in memory and/or non-volatile memory device more specifically, processor can be performed Instruction to execute operation in calculating equipment, such as generate and image data and/or image data be transferred to electronic console. In this way, processor may include one or more general purpose microprocessors, one or more application specific processors (ASIC), one or more Field Programmable Logic Array (FPGA) or any combination of them.
Wherein, the storage unit is stored with 3D model, including mask properties information, hierarchical information of layered processing etc. Attribute information and at least one program.The processing unit is for executing at least one described program to control optical system Accumulate patterning cured layer successively with Z axis driving mechanism to obtain corresponding three-dimension object.
Description uses the 3D printing equipment of optical system provided herein by taking 3D printing equipment shown in Fig. 2 as an example Structure and the course of work for manufacturing three-dimension object.Wherein the 3D printing equipment includes: molding room 22, optical system 21, component Platform 23, Z axis driving mechanism 24 and control device 25.Wherein, optical system 21 is located at container bottoms in molding room 22, with to appearance Device bottom surface projection pattern solidifies the photo-curing material in container.
For the optical system by taking Fig. 4 as an example, light source unit therein includes alternative light source；Mask unit includes difference position In the mask images generation module on each light splitting optical path；Optics module includes spectral module 42 and projection module 43.The light splitting Module 42 includes optical filter, dichronic mirror, reflecting mirror.Here, the projection module 43 includes convergence component and projection lens.Wherein Converging component includes X-type cube.Mask images generation module on each light splitting route is liquid crystal display.
Under the control of the control device, Z axis driving mechanism drives component platform to move up and rest on from zero position At container bottoms (printing datum level) n-th layer of high position, in container bottoms and component platform (or the three-dimensional article manufactured Body bottom surface) between be filled with photo-curing material.Ray machine control unit in optical system according to the received slice figure of institute with The slice figure is resolved into support mask images and body mask according to support construction and main structure by mask properties information Image, and support mask is successively presented according to the mask images generation module that the mask properties information controls corresponding wave band Image and body mask image.So that each mask images for projecting to printing datum level are solidified into corresponding image cured layer, pass through Cured support cured layer and bulk cured layer are attached in component platform.
Under control of the control means, Z axis driving mechanism drives component platform by current pattern cured layer and container bottom Face removing, and rest at the high position of (n+1) a layer, and instruction ray machine control unit is based on the slice of (n+1) layer Figure and mask properties information repeat above-mentioned irradiation process.And so on, successively accumulated manufacture three-dimension object.
In conclusion the application is for photocuring wave band corresponding to different types of photo-curing material in 3D printing equipment Different problems, the optical system provided are divided or are filtered to the light radiation of multiple wave bands by optics module, and by covering Form unit is according at least one mask images of the current slice graphic hotsopt of cured layer to be manufactured, so that arriving through mask image projection The photo-curing material of printing datum level is cured into the pattern cured layer spliced by each mask images, it is thus achieved that 3D printing is set The demand of the standby photo-curing material manufacture three-dimension object for being adapted to a variety of wave bands.In addition, being controlled via the ray machine in optical system single First (i.e. control system) sequentially or simultaneously projects multiple mask images can meet three-dimension object different structure region for greater flexibility Architectural characteristic and different structure region materials variances.
The principles and effects of the application are only illustrated in above-described embodiment, not for limitation the application.It is any ripe Know the personage of this technology all can without prejudice to spirit herein and under the scope of, carry out modifications and changes to above-described embodiment.Cause This, those of ordinary skill in the art is complete without departing from spirit disclosed herein and institute under technical idea such as At all equivalent modifications or change, should be covered by claims hereof.

Claims (27)

1. a kind of optical system is used for 3D printing equipment characterized by comprising
Light source unit, for providing the light radiation of multiple wave bands；
Mask unit, for according to current at least one mask images of the slice graphic hotsopt of cured layer to be manufactured, wherein each Mask images correspond to a wave band；
Optics module, for the mask unit will to be irradiated to the light radiation of wave band corresponding to the mask images and by phase Mask images are answered to be irradiated on the printing datum level of 3D printing equipment.
2. optical system according to claim 1, which is characterized in that the light source unit includes: alternative light source；It is described Optics module is located at the light radiation for separating corresponding wave band on the alternative light source emitting light path from multispectral light radiation.
3. optical system according to claim 2, which is characterized in that the optics module includes:
Spectral module, for separating the light radiation of preset multiple wave bands from the light radiation that alternative light source is emitted and dividing From light radiation expose to the mask unit from individual light splitting optical path；
Projection module, for will project via the light radiation of mask unit to the printing datum level of 3D printing equipment；
Wherein, the spectral module is between light source unit and mask unit, or be located at mask unit and projection module it Between.
4. optical system according to claim 3, which is characterized in that the spectral module includes: optical filter, divides grating At least one of Look mirror.
5. optical system according to claim 3, which is characterized in that the mask unit includes to be located at each light splitting light The mask images generation module on road；Wherein, according to wave band corresponding to the slice figure, at least one described mask images is raw The mask images of corresponding wave band are generated at module.
6. optical system according to claim 1, which is characterized in that the light source unit includes multiple light sources, Mei Geguang Source issues light radiation along different light splitting optical paths；The light radiation of each light splitting optical path is converged to the mask list by the optics module Member.
7. optical system according to claim 6, which is characterized in that different light sources provide the light radiation of different-waveband, or The collaboration of person's multiple light sources provides multiple and different wave bands.
8. optical system according to claim 6, which is characterized in that the optics module includes lens, prism, reflection The combination of at least one of mirror, spectroscope, condenser tube ferrule.
9. optical system according to claim 6, which is characterized in that the mask unit includes that mask images generate mould Block, according to the wave band of received light radiation generate corresponding mask images.
10. the optical system according to claim 2 or 6, which is characterized in that the optics module includes:
Filtration module, for filtering and projecting the light spoke with wave band corresponding to mask images to be projected to the mask unit It penetrates；
Projection module, for will project via the light radiation of mask unit to the printing datum level of 3D printing equipment.
11. the optical system according to claim 5 or 9, which is characterized in that the mask images generation module is based on light The mask images generation module of transmission and/or the mask images generation module reflected based on light.
12. according to claim 1, optical system described in 2 or 6, which is characterized in that further include: ray machine control unit, and it is described Mask unit connection, generates at least one mask images for controlling the mask unit, wherein mask images generated are It is generated based on the currently slice figure of cured layer to be manufactured.
13. optical system according to claim 12, which is characterized in that the ray machine control unit according to described for cutting The received mask properties information of piece figure and institute controls the mask cell and generates at least one mask images.
14. a kind of optical system characterized by comprising
Light source unit, for providing the light radiation of multiple wave bands；
Mask unit, for generating at least one mask images, wherein each mask images correspond to a wave band；
Optics module, for the mask unit will to be irradiated to the light radiation of wave band corresponding to the mask images and by phase Mask images are answered to be irradiated on the printing datum level of 3D printing equipment；
Ray machine control unit, for mask unit described in the slice Graph Control according to current cured layer to be manufactured simultaneously or according to when Generate to sequence at least one mask images.
15. optical system according to claim 14, which is characterized in that the ray machine control unit according to described for cutting The slice figure is resolved at least one mask images by the received mask properties information of pixel value or institute of piece figure.
16. optical system according to claim 14, which is characterized in that include a mask images in the mask unit Generation module；The ray machine control unit also controls light source unit or optics module for the light radiation of wave band corresponding with mask images It is irradiated on the printing datum level via the mask images generation module.
17. optical system according to claim 16, which is characterized in that the light source unit includes multiple light sources；It is described Ray machine control unit adjusts the light intensity of at least one light source according to wave band corresponding with mask images, or controls at least one light source It is turned on or off.
18. optical system according to claim 16, which is characterized in that the light source unit includes alternative light source；Institute The filter module stated in ray machine control unit control optics module provides the light radiation of wave band corresponding with mask images.
19. optical system according to claim 14, which is characterized in that include multiple mask images in the mask unit Generation module, each mask images generation module are located on the light splitting optical path of different-waveband；The ray machine control unit is according to wave band Control is located at the mask images generation module on corresponding light splitting optical path and generates corresponding mask images, and controls other mask images Generation module carries out extinction processing to the received light radiation of institute.
20. a kind of control method of optical system is used for 3D printing equipment characterized by comprising
Obtain the slice figure and mask properties information of current cured layer to be manufactured；
The light radiation of corresponding wave band is irradiated to via corresponding mask images according to mask properties information control optical system It prints on datum level, to obtain manufactured pattern cured layer；Wherein, the mask images are based on the mask properties information The slice graphics process is formed；
The slice figure of current cured layer to be manufactured is successively adjusted according to 3D model to be manufactured and repeats the above process so that every Layer pattern cured layer is accumulated and obtains corresponding three-dimension object.
21. the control method of optical system according to claim 20, which is characterized in that described according to mask properties information The light radiation of corresponding wave band is included: root via the step that corresponding mask images are irradiated on printing datum level by control optical system According to slice figure and mask properties information, the slice figure is resolved into at least one mask images, and the control light System generates each mask images.
22. the control method of optical system according to claim 20, which is characterized in that include one in the optical system A mask images generation module, light source unit and optics module；It is described to control optical system according to mask properties information be right The light radiation of wave band is answered to include: via the step that corresponding mask images are irradiated on printing datum level
It controls the mask images generation module and generates a mask images；
The light source unit or optics module is controlled to cover the light radiation of wave band corresponding with mask images generated via described Mould image generation module is irradiated on the printing datum level；
According to the quantity of mask images generated, repeat the above steps until completing the irradiation of all mask images.
23. the control method of optical system according to claim 22, which is characterized in that the light source unit includes multiple Light source；The control light source unit or optics module cover the light radiation of wave band corresponding with mask images generated via described The step that mould image generation module is irradiated on the printing datum level includes: according to wave band corresponding with mask images generated The light intensity of at least one light source is adjusted, or controls at least one light source and is turned on or off.
24. the control method of optical system according to claim 22, which is characterized in that the light source unit includes white light Light source；The light source unit or optics module are by the light radiation of wave band corresponding with mask images generated via the mask artwork As the step that generation module is irradiated on the printing datum level includes: the filtration module in control optics module to provide and cover Mould image corresponds to the light radiation of wave band.
25. the control method of optical system according to claim 20, which is characterized in that comprising more in the optical system A mask images generation module, each mask images generation module are located on the light splitting optical path of different-waveband；It is described according to mask category Property information control optical system the light radiation of wave band will be corresponded to via corresponding mask images and is irradiated to the step on printing datum level Suddenly include:
It controls the mask images generation module and generates a mask images；
Corresponding mask images are generated in the mask images generation module on corresponding light splitting optical path according to mask properties information control bits, And it controls other mask images generation modules and extinction processing is carried out to the received light radiation of institute.
26. a kind of control system of optical system characterized by comprising
Storage unit, for storing the currently slice figure of cured layer to be manufactured and mask properties information and at least one journey Sequence；
Processing unit is connected with the storage unit, for transferring at least one described program and executing such as claim 20-25 In any control method, carry out light radiation to control the optical system.
27. a kind of 3D printing equipment characterized by comprising
Optical system as described in any in claim 1-13 or 14-19；
Molding room, for holding photo-curing material；
Component platform, for adhering to and accumulating cured pattern cured layer；
Z axis driving mechanism, for driving the component platform to move along the vertical direction to solidify layer surface in the pattern accumulated Fill photo-curing material；
Control device is connected with the optical system and Z axis driving mechanism, for based on respectively cutting in threedimensional model to be manufactured Piece figure and mask properties information control the optical system, and based on the layer for corresponding to each slice figure in the threedimensional model Height control Z axis driving mechanism, so that the optical system and Z axis driving mechanism successively solidify the photo-curing material of printing datum level To manufacture corresponding three-dimension object.
CN201810942310.3A 2018-08-17 2018-08-17 Optical system, control method and system, 3D printing equipment Pending CN109130174A (en)

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CN110480792A (en) * 2019-08-01 2019-11-22 苏州铼赛智能科技有限公司 Manufacturing method, system, 3D printing equipment and image processing method
CN110654028A (en) * 2019-10-12 2020-01-07 上海联泰科技股份有限公司 Three-dimensional object data layering processing method and 3D printing equipment
CN111438941A (en) * 2020-03-30 2020-07-24 上海联泰科技股份有限公司 Three-dimensional data processing system and method and applicable 3D printing equipment

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CN107479205A (en) * 2016-06-07 2017-12-15 台达电子工业股份有限公司 3 D-printing device and its imaging system
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CN106794519A (en) * 2014-10-14 2017-05-31 西门子能源有限公司 The laser gain material manufacture of the three-dimensional part comprising multiple material of forming as one system
CN107479205A (en) * 2016-06-07 2017-12-15 台达电子工业股份有限公司 3 D-printing device and its imaging system
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Publication number Priority date Publication date Assignee Title
CN110480792A (en) * 2019-08-01 2019-11-22 苏州铼赛智能科技有限公司 Manufacturing method, system, 3D printing equipment and image processing method
CN110654028A (en) * 2019-10-12 2020-01-07 上海联泰科技股份有限公司 Three-dimensional object data layering processing method and 3D printing equipment
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Application publication date: 20190104