CN104669625B - Photocuring 3 D-printing method and printing equipment based on projection - Google Patents
Photocuring 3 D-printing method and printing equipment based on projection Download PDFInfo
- Publication number
- CN104669625B CN104669625B CN201510107646.4A CN201510107646A CN104669625B CN 104669625 B CN104669625 B CN 104669625B CN 201510107646 A CN201510107646 A CN 201510107646A CN 104669625 B CN104669625 B CN 104669625B
- Authority
- CN
- China
- Prior art keywords
- projection
- printing
- photocuring
- pattern
- breadth
- 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.)
- Active
Links
Landscapes
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Abstract
The present invention provides a kind of photocuring 3 D-printing method and printing equipment based on projection, and Method of printing is referred specifically to：Optical projection system successively scanning and printing solidification under control of the control system, when printing every layer, every layer of whole pattern to be printed is completed using the projection breadth obtained by rectilinear movement optical projection system in the horizontal plane, and projection breadth is carried out horizontal linear movement by preset path；When mobile, control system obtains the coordinate position of the projection breadth institute projected area in real time, and controls the projection system projects to go out local pattern corresponding with the coordinate position, completes the printing solidification of the local pattern.Using the projection breadth obtained by rectilinear movement optical projection system in the horizontal plane, i.e., portable to project, it can realize the photocuring 3 D-printing of large format to the present invention, and ensure that the printing precision and high efficiency of projecting apparatus itself, improve the printing precision of whole product.
Description
Technical field
The present invention relates to photocuring three-dimensional printing technology field, more particularly to a kind of photocuring based on projection is three-dimensional
Method of printing and printing equipment.
Background technology
Rapid shaping technique is a kind of discrete/accumulation molding, and three-dimensional data model is carried out to cut layer, obtains each layer of wheel
Exterior feature, machining path is designed according to profile information, and moulded head obtains each layer of entity, and successively heap under control of the control system
It is folded, obtain final entity.
Projecting apparatus has various in name, and general principle is all identical, and by taking DLP projections as an example, DLP is " Digital Light
The abbreviation of Procession ", as digital light are processed, that is to say, that this technology is wanted first signal of video signal by digital processing,
Then light is projected again.It is digital micromirror elements --- the DMD based on the exploitation of TI (Texas Instruments) company
(Digital Micromirror Device) completes the technology of viewable numbers presentation of information.Existing DLP technologies, it is generally quiet
State DLP shadow casting techniques, i.e. DLP projector is fixed on pedestal, and DLP projector is not moved, and when exposing for every layer, is projected out phase
The image answered, is kept for the corresponding time for exposure, completes every layer of solidification.Projection pattern has two kinds, Yi Zhongshi：DLP projector is put
Put below resin storage tank, resin trench bottom is light transmissive material, solidified from proj ected bottom light；Another kind is：Projected on DLP
Formula, i.e. DLP projector are fixed on resin storage tank top, from the light of overhead projection specific wavelength to resin storage tank liquid level plane.
Chinese patent ZL201320332935.0 discloses a kind of based on DLP projection photocurable three-dimensional printers, and it includes：
Computer system, for processing threedimensional model；Automatic control system, projects system with feeding system, jacking system and DLP respectively
System is connected, for controlling DLP projection system to be irradiated the liquid level of optic-solidified adhesive in shaping work pond, and control lifting system
System drives shaping work pond or optical projection system to do lifting moving, and control feeding system in shaping work pond to supplying photocuring
Glue；DLP projection system, is connected with computer system, and the sectional view for computer system to be partitioned into is projected to shaping work
Make pond；Shaping work pond, is connected with feeding system, holds optic-solidified adhesive；Jacking system, for adjust DLP projection system with into
The distance between optic-solidified adhesive liquid level in type work pool；Feeding system, for supplying optic-solidified adhesive in shaping work pond.
But, the formed precision based on projection is limited by acp chip DMD resolution ratio, and DMD is up at present
1920x1080P, projection breadth is bigger, and the corresponding size of single pixel is bigger, because precision is related to Pixel Dimensions, therefore printing
Precision is poorer；Secondly, there is optical distortion in DLP projected light camera lenses, and aberration rate is precentagewise to be weighed, i.e., size is got over
Greatly, distortion value is higher；Again, the mechanical erection requirement of DLP projections is higher, and the deviation of projection is will also result in because of mechanical erection, and
Deviation is equally that projection size is bigger, and deviation is bigger.
Therefore, the 3D printer shaping scope based on DLP shadow casting techniques is typically smaller, essentially consists in DMD resolution ratio
Limitation so that DLP projections have to maintain its pixel using small breadth in high precision, in addition, the limitation of light source power is caused greatly
The curing efficiency of breadth is very low, or even is difficult to solidify.When medium-sized breadth is accomplished by existing DLP shadow casting techniques, it may appear that be applicable resin
Material is few (optical power density is low), efficiency is low, low precision (resolution ratio and optical projection distort) the problems such as.
Accordingly, it would be desirable to a kind of 3 D-printing method and three-dimensional based on projection that can realize large format projection and high precision
Printing equipment.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of photocuring based on projection
3 D-printing method and printing equipment, for solving the problems, such as that large format pattern 3 D-printing precision is low in the prior art.
In order to achieve the above objects and other related objects, the present invention provides a kind of photocuring 3 D-printing based on projection
Method, refers specifically to：Optical projection system successively scanning and printing solidification under control of the control system, when printing every layer, using in water
Projection breadth obtained by rectilinear in planes mobile projector system completes every layer of whole pattern to be printed, and makes projection breadth
Horizontal linear movement is carried out by preset path；When mobile, control system obtains the seat of the projection breadth institute projected area in real time
Cursor position, and control the projection system projects to go out local pattern corresponding with the coordinate position, complete the Local map
The printing solidification of case.
Preferably, when printing every layer, the speed that the control system need to be moved horizontally according to the projection breadth, and
The corresponding pattern data in breadth institute projected area that projects carries out gray scale regulation to the optical projection system.
Preferably, before successively being printed, the control system whole pattern to be printed every layer by with this layer
The corresponding preset path resolves into multiple sub-patterns, makes the seat of each sub-pattern and the print area of the corresponding sub-pattern
Cursor position matches.
Preferably, the method for operation of the projection breadth is continuous-moving type operation or the operation of gap dwell type, and gap is stopped
Formula of pausing operation is specially：The each mobile gap for the local pattern corresponding region of projection breadth, moves to correspondence
The exposure curing for completing herein is stopped at local pattern, is then moved to again at next local pattern and stop again exposure admittedly
Change.
The present invention also provides a kind of photocuring 3 D-printing device based on projection, and it includes：Hold liquid resinous
Resin storage tank, is placed in the liftable 3 D-printing platform that is connected with vertical lifting mechanism in resin storage tank, and complete projection scanning
Optical projection system, control system, the optical projection system include projecting apparatus, drive the projecting apparatus in the same plane along any direction
Mobile slide mechanism and the position sensor of detection projecting apparatus real time position, the vertical lifting mechanism, the projecting apparatus
And slide mechanism and position sensor are connected with the control system.
Preferably, the optical projection system is placed in the surface of the resin storage tank, and the slide mechanism includes X direction guiding rails and Y
Direction guiding rail, and the sliding block that can be slided along the X direction guiding rails and/or Y-direction guide rail, drive what the sliding block was slided along X direction guiding rails
First motor, the second motor for driving the sliding block to be slided along Y-direction guide rail, the projecting apparatus is arranged on the sliding block, and
The coating mechanism being connected with the control system is additionally provided with the resin storage tank.
Preferably, the optical projection system is placed in the underface of the resin storage tank, and the bottom surface of the resin storage tank is clear bottom
Face, the slide mechanism includes X direction guiding rails and Y-direction guide rail, and the cunning that can be slided along the X direction guiding rails and/or Y-direction guide rail
Block, the first motor for driving the sliding block to be slided along X direction guiding rails, the second motor for driving the sliding block to be slided along Y-direction guide rail, institute
Projecting apparatus is stated to be arranged on the sliding block.
Preferably, the optical projection system is placed in the side of the resin storage tank, is set in the light path that the projecting apparatus is projected
Speculum is put, the light path that projecting apparatus is projected is reflected into vertical direction by speculum injects in resin storage tank.
Preferably, the position sensor is linear encoder, or in first motor and the second motor
Motor encoder.
Preferably, the projecting apparatus is DLP projector, LED projector, LCoS projecting apparatus, LCD projector, UV
(ultraviolet) one of those or several arrays of projecting apparatus.
As described above, photocuring 3 D-printing method and printing equipment based on projection of the invention, have with following
Beneficial effect：Using the projection breadth obtained by rectilinear movement optical projection system in the horizontal plane, i.e., portable projection, it can be realized significantly
The photocuring 3 D-printing in face, and the printing precision and high efficiency of projecting apparatus itself are ensure that, make the printing essence of whole product
Degree is improved, and portable projection possesses larger optical power density, it is ensured that the high efficiency of movable type projection.
Brief description of the drawings
Fig. 1 is shown as being projected using photocuring 3 D-printing method of the present invention based on projection the schematic diagram of a certain layer.
B1 frames project the corresponding local pattern in breadth institute projected area during Fig. 2 is shown as Fig. 1.
Fig. 3 is shown as describing the photocuring 3 D-printing method schematic diagram based on projection of the invention using pixel.
Fig. 4 is shown as the schematic diagram of the photocuring 3 D-printing device based on projection of the invention.
Component label instructions
1 resin storage tank
23 D-printing platforms
3 DLP projectors
41 X direction guiding rails
42 Y-direction guide rails
43 sliding blocks
44 second motors
45 first motors
46 Y-direction slide rails
47 X are to slide rail
5 vertical lifting mechanisms
6 coating mechanisms
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages of the invention and effect easily.
Refer to Fig. 1 to Fig. 4.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., is only used to
Coordinate the content disclosed in specification, so that those skilled in the art understands and reads, being not limited to the present invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where effect that can be generated of the invention and the purpose to be reached is not influenceed, all should still fall in disclosed skill
In the range of art content is obtained and can covered.Meanwhile, in this specification it is cited as " on ", D score, "left", "right", " centre " and
The term of " one " etc., is merely convenient to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness
It is altered or modified, under without essence change technology contents, when being also considered as enforceable category of the invention.
As shown in accompanying drawing, tri- directions of XYZ are defined, XY directions refer to horizontal direction, and Z-direction refers to vertical direction,
Tri- directions of XYZ are orthogonal two-by-two, and to the left and right directions for referring to the page, Y-direction refers to the above-below direction of the page to X in this specification.
The present invention provides a kind of photocuring 3 D-printing method based on projection, mainly includes the following steps that：
1) 3D solid that first, control system will be printed carries out section decomposition, show that every layer to be scanned after cutting into slices
The section pattern of printing；
2) again, before successively being printed, the control system whole pattern to be printed every layer is by corresponding with this layer
Preset path resolve into multiple sub-patterns, make the coordinate position phase of each sub-pattern and the print area of corresponding sub-pattern
Match somebody with somebody, the data message storage after matching is in the controls；
3) optical projection system successively scanning and printing solidification under control of the control system, when printing every layer, using in level
The projection breadth that is moved linearly obtained by optical projection system in face completes every layer of whole pattern to be printed, and make projection breadth by
Preset path carries out horizontal linear movement；When mobile, control system obtains the coordinate position of projection breadth institute projected area in real time,
And control projection system projects go out local pattern corresponding with the coordinate position, the printing solidification of local pattern is completed.
The present invention is projected using the projection breadth obtained by rectilinear movement optical projection system in the horizontal plane, i.e. movable type DLP, its
The photocuring 3 D-printing of large format can be realized, and ensure that the printing precision and high efficiency of projecting apparatus itself, make whole product
The printing precision of product is improved, and portable projection possesses larger optical power density, it is ensured that the high efficiency of movable type projection.This
Projecting apparatus in invention can be DLP (Digital Light Procession) projecting apparatus, LED (light emitting
Diode) projecting apparatus, LCoS (liquid crystal on silicons) projecting apparatus, LCD (liquid crystal
Display) one of those or several arrays of projecting apparatus, UV (ultraviolet) projecting apparatus.
The preset path of above-mentioned projection breadth is generally：First in one direction as X-direction is moved, after scanning from the beginning to the end,
Step-by-step movement movement Y-direction, usually translates a width dimensions for projection breadth in Y-direction again, and repeating carries out sweeping for X-direction
Retouch.The preset path can also be：Circular path ecto-entad successively prints complete pattern；Or dog leg path etc..It is default
The setting in path is set according further to this layer global pattern to be printed, and is defined by improving efficiency.
The method of operation of above-mentioned projection breadth can be run for continuous-moving type, that is, project breadth and continuously move, and now need
The synchronism for moving horizontally local pattern corresponding with breadth institute projected area is projected of control projection breadth is, it is necessary to accurate control
System, and local pattern careful division, the continuous-moving type scan efficiency is high.
The method of operation of above-mentioned projection breadth can also be run for gap dwell type, and dwell type operation in gap is in particular：
The each mobile gap for local pattern corresponding region of projection breadth, moves to and is stopped at correspondence local pattern, now projects
System is projected, and exposes certain hour, to complete exposure curing herein, turns off optical projection system, is then moved to next
At individual local pattern, stop carries out projection exposure curing again.It is simple that gap dwell type runs its control system, it is easy to accomplish.
Specifically：As shown in figure 1, A1 refers to the horizontal plane maximum magnitude that photocuring 3 D-printing device can be molded in figure,
B1 refers to the maximum magnitude of the projection breadth that optical projection system is projected；In figure with hatching C1 patterns be refer to this layer (according to
Thickness is by the corresponding section pattern of a certain layer after section) the whole pattern to be printed.As can be seen from the figure projecting apparatus goes out
The maximal projection scope of light is far smaller than the maximum shaping scope of 3D printer, teaches how to be realized with mobile projector technology below
The exposure process of the layer pattern.Coordinate with projecting apparatus lower-left angle point in optical projection system is the coordinate for being projected out projecting breadth, when
Projection breadth is when moving to optional position, in such as Fig. 1 B1 at, now project the pattern that breadth projected be in figure B1 frames whole
The pattern intercepted in individual pattern, is the local pattern that the position intercepts as shown in Figure 2.Projection breadth in moving process,
The pattern for projecting can constantly refresh change with the change of position, i.e., every new position, control system can be controlled
Projector processed goes out the local pattern that the position intercepts, as shown in Figure 2.
Borrow this concept of pixel below to further describe 3 D-printing method of the invention, i.e., portable scanning and printing
Method.
It is illustrated in fig. 3 shown below, A1 frames are that polygon ABCD is the maximum shaping scope of photocuring 3 D-printing device horizontal plane, AB
Direction is defined as X-direction, and AD directions are defined as Y-direction.Pentagon is the profile that C1 frames are pattern to be printed, the area of actual printing
Domain is the space of pentagon inside envelope.
Polygon MNPQ is that the projection breadth that DLP projector (the present embodiment is by taking DLP projector as an example) is projected is maximum
Shaping scope, D1 represents a pixel in figure, and pixel is linked to be by the summit of four broken lines in figure, it is assumed that each pixel
It is the rectangle of a length of c of X-direction, a length of d of Y-direction in working face, DLP projector resolution ratio is that (it is micro- that it depends on numeral to α × β
The resolution ratio of mirror element DMD, such as 1024x768,1920x1080), DLP projector areas imaging is full projection breadth (a, b)
Foot：
It is every in projection breadth according to DLP projector in the range of the maximum shaping of photocuring 3 D-printing device shown in A1
The size (c, d) of individual pixel, corresponding pixel is divided into by A1 inframes space by the Pixel Dimensions, and wants print pattern institute
Corresponding pixel is to need exposure.When the projection breadth that DLP projector is projected out moves to a certain position, the position
Corresponding pixel is to be exposed, and the pixel of exposure is lit and controls its time for exposure, it is met resin solidification
It is required that.
It is explained further：As shown in Figure 3, it is assumed that the maximum shaping scope of photocuring 3 D-printing device horizontal plane：AB=m,
BC=n, then the multiple pixels that point off density in whole maximum printing region division Cheng Rutu can be built for the quadrangle on summit,
The pixel of whole region equivalent to：X-directionIndividual pixel, Y-directionIndividual pixel.The present invention is swept by projecting breadth movement
The mode retouched, it can be understood as pixel quantity is significantly increased, therefore printing precision is greatly improved.
For example, DLP projector resolution ratio is 1920x1080P, when the projection breadth that DLP projector is projected
When size is 96x54mm, single pixel size is 50 μm (=96/1920mm), if traditional method changes camera lens, makes projection width
Face reaches 192x108mm, then single pixel dimensional accuracy is changed into 100 μm, and using the mode of mobile projector breadth, i.e., it is portable
DLP is projected, no matter projection breadth is much, resolution ratio is still 50 μm of the resolution ratio of DLP projector.Be the equal of by photocuring three
The whole breadth of printing is tieed up, be divide into considerably beyond many individual pixels of original resolution ratio 1920x1080P, also can just managed
Solve as pixel quantity of the invention is significantly increased, therefore printing precision is greatly improved.
As shown in Figure 3, it is assumed that the projection breadth B1 that DLP projector is projected out moves along a straight line towards X positive directions, translational speed
It is v, polygon M0N0P0Q0Constitute initial projection breadth, initial position M0(0,0), then project breadth B1 one pixel of movement
Time isThen require that the pattern refreshing frequency that DLP projector is projected is sufficiently fast, refresh the time of pattern no more than
The mobile time for pixel, therefore the refreshing frequency of DLP projector pattern is required to meet：
And when on printing C1 meaning pattern contour borders, it is possible that less than a situation for pixel, now, passing through
Grey level compensation realizes the exposure projections of half-pixel or not enough half-pixel.I.e.：When printing every layer, control system needs basis
The speed that projection breadth is moved horizontally, and the corresponding pattern data in projection breadth institute projected area is carried out to DLP projection system
Gray scale is adjusted.Namely refer to：To ensure in the whole photocuring 3 D-printing range of work, the exposure of any exposed portion pixel
The light time has reached the time value of control needed for curing molding.
Gray scale means carries out gray proces to image, is exactly pure white without gray scale, i.e. DLP projector is most bright, there is ash
The part (according to tonal gradation) of degree, will graying (brightness step-down), it is exactly that pure white becomes that tonal gradation reaches degree of saturation
Ater.It is to cause DLP projector by the main influence of gray proces for the photocuring 3 D-printing based on projection
In same width pattern diverse location brightness change, it is specifically related to gray proces algorithm.Particularly near pattern boundaries
Place, the treatment of the pattern gray scale of projection is slightly more complex, is still on the whole the pattern for projecting and being intercepted in breadth B1,
Move horizontally mode and speed to control the gray feature of its image according to DLP projector.Grey level compensation is used for pattern Processing
Boundary member, reduces its sawtooth, seamlessly transits pattern boundaries.
According to the feature of light-cured resin, the effect of photocuring is related to its solidification energy.Control system control is solid in light
Change 3 D-printing device planar shaping in the range of any one exposed portion pixel hardening time, it is ensured that exposed portion each
Pixel reaches the time of solidification needed for material.
As shown in figure 4, the present invention also provides a kind of photocuring 3 D-printing device based on projection, it includes：Hold
Liquid resinous resin storage tank 1, is placed in the liftable 3 D-printing platform 2 that is connected with vertical lifting mechanism 5 in resin storage tank 1, and
Liquid level equilibrium mechanism etc., those structures are structures commonly used in the prior art, are not described in detail here；And complete projection scanning
DLP projection system, control system, the DLP projection system includes DLP projector 3, drives the DLP projector 3 same
The slide mechanism and the position sensor of the detection real time position of DLP projector 3 moved along any direction in plane, vertical lifting
Mechanism 5 and the DLP projector 3, slide mechanism and position sensor are connected with the control system.Light of the invention is consolidated
Change 3 D-printing device, DLP projector can be made any to movement in a plane, that is, realize DLP projector to project
Projection breadth arbitrarily moved on printable layer, can thus complete large format pattern printing solidification, improve overall precision
And operating efficiency.
A specific embodiment of photocuring 3 D-printing device of the invention is illustrated in figure 4, above-mentioned DLP projection system is put
The surface of resin storage tank is placed in the surface of resin storage tank 1, i.e. DLP projector 3, it is upper projection pattern.Now the present apparatus is also
Including the coating mechanism 6 being connected with the control system being located on resin storage tank 1.The concrete structure of above-mentioned slide mechanism is：Bag
X direction guiding rails 41 and Y-direction guide rail 42 are included, and institute can be driven along the X direction guiding rails 41 and/or the sliding block 43 of Y-direction guide rail slip 42
The first motor 45 that sliding block 43 is slided along X direction guiding rails 41 is stated, the second motor for driving the sliding block 43 to be slided along Y-direction guide rail 42
44, DLP projector 3 is arranged on the sliding block 43.Specifically, sliding block 43 is located in cross and slided on rail by the present embodiment, and ten
Word slides rail includes X to slide rail 47 and Y-direction slide rail 46, and X is slidably arranged in above-mentioned Y-direction guide rail to the two ends of slide rail 47, second
Moved along Y-direction guide rail under the drive of motor 44, the two ends of Y-direction slide rail 46 are slidably arranged on above-mentioned X direction guiding rails 41, in the first motor
Moved along X direction guiding rails 41 under 45 drive, by cross slide rail realize sliding block planar along X to and/or Y-direction move,
XY couplings direction motion.The rotary motion of the first motor, the second motor can be converted into X-direction by the present embodiment by lead screw guide rails
Or the linear motion of Y-direction；Can also be driven by modes such as synchronous pulleys, this is not described in detail here for common technique.
Slide mechanism in the present invention can also can realize driving DLP projector 3 in the same plane along any for other
The structure of direction movement, is not limited to said structure.
To realize the accurate coordinate position for obtaining DLP projector, above-mentioned position sensor is linear encoder, such as grating scale
Deng；Above-mentioned position sensor can also refer to the encoder of motor itself band to detect the position of DLP projector.
Above-mentioned DLP projector can also be by LED (light emitting diode) projecting apparatus, LCoS (liquid
Crystal on silicons) projecting apparatus, LCD (liquid crystal display) projecting apparatus, UV (ultraviolet)
The array of one of them of projecting apparatus is substituted, or is substituted by several array combinations.
The present invention first, is controlled by the 3 D-printing platform 2 of vertical lifting mechanism 5 and is located on resin liquid level in printing,
Ground floor moving above scanning and solidifying, ground floor drives DLP projector 3 by above-mentioned slide mechanism same when scanning
Along an intention movement is appointed in plane, i.e., coupled to moving to, Y-direction or XY along X, complete the scanning solidification of the layer pattern, specific scanning
The photocuring 3 D-printing method of method invention as described above；Then, 3 D-printing platform 2 declines one layer, the liquid level of resin
Keep constant, coating mechanism 6 causes to coat a thin layer resin on a layer of just solidification；DLP projector 3 solidifies in upper Surface scan
The second layer, and be bonded together with last layer, the scanning and printing of the second layer is also adopted by moving above-mentioned DLP projector completion, so
Solidify each section for model successively, until producing whole model.
The second embodiment of the photocuring 3 D-printing device based on projection of the invention, its is unlike the embodiments above
Part is：DLP projection system in the present embodiment is placed in the underface of resin storage tank, and the bottom surface of resin storage tank is transparent bottom surface,
I.e. the present embodiment is proj ected bottom mode, without coating mechanism in the present embodiment, its successively projection printing from lower to upper.This implementation
In each mechanism it is same as the previously described embodiments, the underface except DLP projection system to be placed in resin storage tank, DLP projector is upward
Irradiation is outer.Other structures are no longer described one by one at this.
The 3rd embodiment of the photocuring 3 D-printing device based on projection of the invention, it is different from first embodiment
Part is：The DLP projection system is placed in the side of resin storage tank, and speculum is set in the light path that DLP projector is projected,
The light path that DLP projector is projected is reflected into vertical direction by speculum to inject in resin storage tank.Structure in the present embodiment
Also essentially identical with first embodiment, in addition to increasing speculum, the setting direction of above-mentioned slide mechanism may be from level to change
Into vertically to making DLP projector be moved in perpendicular.I.e. above-mentioned X direction guiding rails or Y-direction guide rail are likely to become Z-direction guide rail, only
It is the change of direction setting, its concrete structure part or identical.It is not described in detail here.
In sum, photocuring 3 D-printing method and printing equipment based on projection of the invention, it is used in water
Projection breadth obtained by rectilinear in planes movement DLP projection system, i.e. movable type DLP projections, the light that it can realize large format is consolidated
Change 3 D-printing, and the printing precision and high efficiency of DLP projector itself are ensure that, put forward the printing precision of whole product
Height, and portable projection possesses larger optical power density, it is ensured that the high efficiency of movable type projection.So, the present invention is effectively
Overcome various shortcoming of the prior art and have high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
The personage for knowing this technology all can carry out modifications and changes under without prejudice to spirit and scope of the invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as
Into all equivalent modifications or change, should be covered by claim of the invention.
Claims (9)
1. a kind of photocuring 3 D-printing method based on projection, refers specifically to：Optical projection system under control of the control system by
Layer scanning and printing solidification, is provided with DMD elements, it is characterised in that before successively being printed in optical projection system, control system will be every
Layer the whole pattern to be printed resolve into multiple sub-patterns by preset path corresponding with this layer, make each sub-pattern with it is corresponding
The coordinate position of the print area of sub-pattern matches；When printing every layer, using the optical projection system that moves linearly in the horizontal plane
The projection breadth of gained completes every layer of whole pattern to be printed, and projection breadth is carried out horizontal linear by preset path
It is mobile；When mobile, control system obtains the coordinate position of the projection breadth institute projected area in real time, and controls the projection system
System projects local pattern corresponding with the coordinate position, completes the printing solidification of the local pattern.
2. the photocuring 3 D-printing method based on projection according to claim 1, it is characterised in that：In every layer of printing
When, the speed that the control system need to be moved horizontally according to the projection breadth, and the projection breadth institute projected area pair
The pattern data answered carries out gray scale regulation to the optical projection system.
3. the photocuring 3 D-printing method based on projection according to claim 1, it is characterised in that：The projection width
The method of operation in face is that continuous-moving type runs or the operation of gap dwell type, and dwell type operation in gap is specially：The projection width
The each mobile gap for the local pattern corresponding region in face, to move to and stop the exposure for completing herein at correspondence local pattern
Photocuring, is then moved at next local pattern and stops exposure curing again again.
4. a kind of photocuring 3 D-printing device based on projection, it is characterised in that：Including：Hold liquid resinous resin
Groove, is placed in the liftable 3 D-printing platform that is connected with vertical lifting mechanism in resin storage tank, and the projection for completing projection scanning
System, control system, the optical projection system include projecting apparatus, drive the projecting apparatus to be moved along any direction in the same plane
Slide mechanism and detection projecting apparatus real time position position sensor, be provided with DMD elements in the projecting apparatus, it is described vertically
Elevating mechanism, the projecting apparatus and slide mechanism and position sensor are connected with the control system；The control system
Before successively being printed, the whole pattern that every layer to be printed resolves into multiple subgraphs by preset path corresponding with this layer
Case, makes each sub-pattern match with the coordinate position of the print area of corresponding sub-pattern；When printing every layer, control system control
Slide mechanism processed moves linearly in the same plane, and the projection breadth for going out projector carries out horizontal linear by preset path
It is mobile；When mobile, control system obtains the coordinate position of the projection breadth institute projected area by position sensor in real time, and
The projection system projects are controlled to go out local pattern corresponding with the coordinate position, the printing for completing the local pattern is consolidated
Change.
5. the photocuring 3 D-printing device based on projection according to claim 4, it is characterised in that：The projection system
System is placed in the surface of the resin storage tank, and the slide mechanism includes X direction guiding rails and Y-direction guide rail, and can be along the X direction guiding rails
And/or the sliding block that Y-direction guide rail is slided, the first motor for driving the sliding block to be slided along X direction guiding rails, the sliding block is driven along Y-direction
Second motor of slide, the projecting apparatus is arranged on the sliding block, and is additionally provided with and the control on the resin storage tank
The connected coating mechanism of system processed.
6. the photocuring 3 D-printing device based on projection according to claim 4, it is characterised in that：The projection system
System is placed in the underface of the resin storage tank, and the bottom surface of the resin storage tank is transparent bottom surface, and the slide mechanism includes X direction guiding rails
And Y-direction guide rail, and the sliding block that can be slided along the X direction guiding rails and/or Y-direction guide rail, drive the sliding block to be slided along X direction guiding rails
The first motor, the second motor for driving the sliding block to be slided along Y-direction guide rail, the projecting apparatus is on the sliding block.
7. the photocuring 3 D-printing device based on projection according to claim 4, it is characterised in that：The projection system
System is placed in the side of the resin storage tank, and speculum is set in the light path that the projecting apparatus is projected, and will be projected by speculum
The light path that instrument is projected is reflected into vertical direction and injects in resin storage tank.
8. the photocuring 3 D-printing device based on projection according to claim 5 or 6, it is characterised in that：Institute's rheme
Sensor is put for linear encoder, or the motor encoder in first motor and the second motor.
9. the photocuring 3 D-printing device based on projection according to claim 4, it is characterised in that：The projecting apparatus
It is DLP projector, LED projector, LCoS projecting apparatus, LCD projector, UV projecting apparatus one of those or several arrays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107646.4A CN104669625B (en) | 2015-03-12 | 2015-03-12 | Photocuring 3 D-printing method and printing equipment based on projection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107646.4A CN104669625B (en) | 2015-03-12 | 2015-03-12 | Photocuring 3 D-printing method and printing equipment based on projection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104669625A CN104669625A (en) | 2015-06-03 |
| CN104669625B true CN104669625B (en) | 2017-06-09 |
Family
ID=53305457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510107646.4A Active CN104669625B (en) | 2015-03-12 | 2015-03-12 | Photocuring 3 D-printing method and printing equipment based on projection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104669625B (en) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105666885A (en) * | 2016-04-18 | 2016-06-15 | 周宏志 | Partitioned photocuring 3D printing forming method, system and device based on DLP |
| CN105904727A (en) * | 2016-04-19 | 2016-08-31 | 周宏志 | DLP-based photocuring 3D printing forming method, system and device |
| CN105856573A (en) * | 2016-05-18 | 2016-08-17 | 博纳云智（天津）科技有限公司 | High-precision and high-speed continuous 3D printer and printing method thereof |
| CN107627600B (en) * | 2016-07-14 | 2019-12-24 | 东友科技股份有限公司 | Exposure forming device and exposure forming method thereof |
| CN106042387A (en) * | 2016-07-19 | 2016-10-26 | 彭爽 | Photosensitive curing 3D printing machine |
| CN106945271A (en) * | 2017-03-03 | 2017-07-14 | 广东丽格科技股份有限公司 | Digital projection face 3D printing system, method, method of adjustment and device |
| CN106985382B (en) * | 2017-04-25 | 2019-06-14 | 上海联泰科技股份有限公司 | 3D printing method and the printing device being applicable in |
| CN107215103B (en) * | 2017-05-09 | 2019-02-22 | 张亚雄 | A kind of 3D rendering production method and the 3D rendering printer based on the method |
| CN107320779B (en) * | 2017-06-22 | 2020-03-27 | 清华大学深圳研究生院 | Method and device for preparing in-vitro three-dimensional tissue model |
| CN107364129A (en) * | 2017-07-14 | 2017-11-21 | 华南理工大学 | The micro- projection photocurable printing equipment and method that a kind of single print area doubles |
| CN107379520A (en) * | 2017-07-20 | 2017-11-24 | 四川建筑职业技术学院 | A kind of photocuring 3D printer based on FDM printing techniques |
| US10766242B2 (en) * | 2017-08-24 | 2020-09-08 | General Electric Company | System and methods for fabricating a component using a consolidating device |
| CN108312505A (en) * | 2018-02-05 | 2018-07-24 | 中山新诺科技股份有限公司 | A kind of the 3D molding machines and method of DMD scanning imageries |
| CN108437452A (en) * | 2018-04-16 | 2018-08-24 | 广州黑格智造信息科技有限公司 | A kind of 3D formation systems moving spliced upper projection pattern |
| US10780640B2 (en) * | 2018-07-30 | 2020-09-22 | Intrepid Automation | Multiple image projection system for additive manufacturing |
| CN111654681B (en) * | 2019-03-04 | 2024-04-19 | 北京谦恒德科技有限公司 | Projection splicing method of DLP optical machine |
| CN109968663A (en) * | 2019-04-23 | 2019-07-05 | 上海幻嘉信息科技有限公司 | A kind of projection split type 3D printing method and 3D printing device |
| CN110076989B (en) * | 2019-05-22 | 2024-04-05 | 华南理工大学 | Printing method of 3D printing device based on nonlinear focusing multi-partition exposure |
| US20220324174A1 (en) * | 2019-09-24 | 2022-10-13 | Ecole Polytechnique Federale De Lausanne (Epfl) | Method and apparatus for volumetric additive manufacturing with digital distortion compensation |
| CN110884126B (en) * | 2019-12-28 | 2023-06-16 | 上海唯视锐光电技术有限公司 | High-precision printing system and printing method for large-frame 3D printing |
| CN113119458B (en) * | 2019-12-31 | 2022-08-09 | 上海联泰科技股份有限公司 | Calibration system and method of 3D printing equipment and 3D printing equipment |
| CN111438941B (en) * | 2020-03-30 | 2022-03-22 | 上海联泰科技股份有限公司 | Three-dimensional data processing system and method and applicable 3D printing equipment |
| CN111361147B (en) * | 2020-05-27 | 2020-08-25 | 上海唯视锐光电技术有限公司 | Gradually-spliced multi-exposure large-format 3D printing system and using method |
| CN111844721A (en) * | 2020-05-29 | 2020-10-30 | 上海汉邦联航激光科技有限公司 | Grafting positioning system and grafting method of 3D printer |
| CN111645315B (en) * | 2020-06-12 | 2023-08-25 | 深圳锐沣科技有限公司 | Three-dimensional printing method, three-dimensional printing device, computer equipment and storage medium |
| CN111805895A (en) * | 2020-07-30 | 2020-10-23 | 沃尔创新（深圳）科技有限公司 | Large-size photocuring 3D printing method and printer |
| CN112060571B (en) * | 2020-08-31 | 2022-07-08 | 深圳市纵维立方科技有限公司 | Printing method and printing apparatus |
| CN112693113B (en) * | 2020-12-10 | 2022-04-19 | 浙江大学 | Rapid material increase manufacturing system based on projection three-dimensional reconstruction |
| WO2023274172A1 (en) * | 2021-06-28 | 2023-01-05 | 广州黑格智造信息科技有限公司 | Slice image processing method for 3d printing, system, apparatus, and storage medium |
| CN114119632B (en) * | 2021-11-12 | 2022-05-31 | 中国科学院空间应用工程与技术中心 | Rotary type slice segmentation method, system, controller and printer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203665945U (en) * | 2013-06-08 | 2014-06-25 | 王健犀 | Three-dimensional photo-curing printer based on DLP (digital light processing) projection |
| CN203752536U (en) * | 2014-03-19 | 2014-08-06 | 中国科学技术大学 | High-precision printing motion device for three-dimensional (3D) printer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3901831B2 (en) * | 1998-03-06 | 2007-04-04 | ナブテスコ株式会社 | Stereolithography equipment |
| US9636873B2 (en) * | 2012-05-03 | 2017-05-02 | B9Creations, LLC | Solid image apparatus with improved part separation from the image plate |
| CN203410031U (en) * | 2013-07-12 | 2014-01-29 | 张溪 | 3D (three-dimensional) printer |
| CN204547081U (en) * | 2015-03-12 | 2015-08-12 | 上海联泰三维科技有限公司 | Based on the photocuring 3 D-printing device of projection |
-
2015
- 2015-03-12 CN CN201510107646.4A patent/CN104669625B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203665945U (en) * | 2013-06-08 | 2014-06-25 | 王健犀 | Three-dimensional photo-curing printer based on DLP (digital light processing) projection |
| CN203752536U (en) * | 2014-03-19 | 2014-08-06 | 中国科学技术大学 | High-precision printing motion device for three-dimensional (3D) printer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104669625A (en) | 2015-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104669625B (en) | Photocuring 3 D-printing method and printing equipment based on projection | |
| CN204547081U (en) | Based on the photocuring 3 D-printing device of projection | |
| US11014301B2 (en) | Multiple image projection system for additive manufacturing | |
| US9862147B2 (en) | Method of stereolithography fabrication and photo-curing photosensitive resin | |
| US8666142B2 (en) | System and method for manufacturing | |
| CN105216330A (en) | Based on 3D Method of printing and the 3D printing equipment of projection | |
| JP4937044B2 (en) | Method of forming a three-dimensional object layer by layer | |
| CN205238580U (en) | Face exposure 3D prints concatenation forming system based on DLP projection technology | |
| CN107561876A (en) | A kind of new mask-free photolithography system and its technological process | |
| WO2019169960A1 (en) | Internal stereo direct light curing molding 3d printing device and control method therefor | |
| KR102484974B1 (en) | Direct imaging exposure apparatus and direct imaging exposure method | |
| CN106363908B (en) | A kind of optical imaging system of photocuring 3D printer | |
| CN110722795B (en) | One shot forming's multiaspect LCD light source 3D printing device | |
| CN108274745B (en) | Stepping splicing 3D printing system and printing method | |
| CN111923411A (en) | Dynamic imaging 3D printing system and printing method thereof | |
| CN107364129A (en) | The micro- projection photocurable printing equipment and method that a kind of single print area doubles | |
| JP2010089364A (en) | Three-dimensional shaping apparatus | |
| IT202000003653A1 (en) | Predictive method and relative apparatus for isotropic stereolithographic 3D printing with hybrid light source at variable speed and power | |
| CN104339653A (en) | Light curing 3D printing device and printing method | |
| CN101332649B (en) | Light-cured quick forming device and method based on reflection-type liquid crystal light valve | |
| CN109968662B (en) | Light source device and 3D printing system | |
| CN110216871A (en) | A kind of 3D printing method and print system | |
| CN104238256B (en) | Raster scanning type three-dimensional printing machine | |
| CN113059796B (en) | Calibration mechanism, method and system of 3D printing equipment and storage medium | |
| CN113119458B (en) | Calibration system and method of 3D printing equipment and 3D printing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201014 Address after: 20112 40 Blocks 102, No. 258, Shenzhuan Highway, Songjiang District, Shanghai Patentee after: SHANGHAI UNION TECHNOLOGY Corp. Address before: 201612 Shanghai city Songjiang District Xinzhuan Highway No. 258 Songjiang Caohejing hi tech park, building 40, Room 102 Patentee before: SHANGHAI LIANTAI 3D TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |