CN107584758A - Photocuring printer projecting method, projection arrangement and the printer with the device - Google Patents
Photocuring printer projecting method, projection arrangement and the printer with the device Download PDFInfo
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- CN107584758A CN107584758A CN201711056707.4A CN201711056707A CN107584758A CN 107584758 A CN107584758 A CN 107584758A CN 201711056707 A CN201711056707 A CN 201711056707A CN 107584758 A CN107584758 A CN 107584758A
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Abstract
The invention discloses a kind of photocuring printer projecting method, by setting collector lens between lcd screen and the model separation photic zone of magazine, model separation photic zone side on the inside of magazine forms Stereolithography working face, and realizes type-script of the printing more than or less than lcd screen size by adjusting the distance between collector lens and Stereolithography working face.The invention also discloses a kind of photocuring printer with high-precision projection arrangement and the printer with the device, by using above-mentioned projecting method and to set the distance of collector lens and Stereolithography working face be 0~2L（Except L）The distance between, realize type-script of the printing less than lcd screen resolution ratio.The invention also discloses a kind of photocuring printer projection arrangement, by using above-mentioned projecting method and sets the distance of collector lens and Stereolithography working face to be more than 2L or realizes type-script of the printing more than lcd screen size using divergent lens.
Description
Technical field
The present invention relates to 3D printing equipment technical field, and in particular to a kind of photocuring printer high accuracy projection side
Method, projection arrangement and the printer with the device.
Background technology
One of the advantages of photocuring printer is printing precision height, its printing precision and the resolution height phase of display screen
Close.Resolution ratio is 1280 × 768 pixels, 12 inch display screen dot matrix sizes reach 0.16 × 0.16mm, is shown using the specification
The printing precision of the printer of screen can reach micron order, and the precision of in the market printing precision highest photocuring printer is about
27μm。
Publication date discloses a kind of two-photon polymerized for the Chinese patent literature CN 105751511A on July 13rd, 2016
3D printer and Method of printing, it includes：Femto-second laser pulse system, has：For producing 600-1000nm two-photon lasers
Femto-second laser, for will the object lens that export after two-photon laser convergence, in the femto-second laser to the object lens
Light path on light path switch and attenuator；Submicron order precise movements platform, for carrying photosensitive resin and being controlled in motion
Mobile photosensitive resin under the control of system processed；CCD monitoring systems, connected by the light path of dichronic mirror and femto-second laser pulse system
Connect；And control computer, it is connected respectively with the femto-second laser, light path switch, kinetic control system and CCD monitoring systems.
The technology path that the technical scheme uses three-dimensional curing molding inside consumptive material for laser, but its manufacturing cost is high, use cost
High, maintenance cost height, is unfavorable for promoting the use of.
The content of the invention
With reference to the polarization of current things（Hugeization, miniaturization）Development trend, for the advanced of future technical advances
Considering, inventor feels the need to the nano-precision technology layout of prior involvement 3D printer, but in existing LCD display
Under restriction, micron pole printing precision has been the limit.Under having daily and nightly in the thoughts, the thinking limitation of prior art is broken through finally, finds one
The problem of kind is new resolving ideas.
The technical problem to be solved in the present invention is to provide a kind of photocuring printer projecting method, this method separately wards off footpath
Footpath, the printing precision of photocuring printer is set to surmount the limitation of LCD display.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of photocuring printer projecting method is designed, including area source vertical irradiation is imaged with being formed on the lcd screen
It is the step of light beam, further comprising the steps of：
By the imaging beam successively through collector lens, magazine model separation photic zone after project, make it in the magazine
The model separation photic zone side of side forms Stereolithography working face, and the focal length of the collector lens is L, described to be light-cured into
Type working face is parallel with the lcd screen；When the distance of the photocentre of the optical soliton interaction identity distance lens is more than 2L, the light
Image formation by rays pattern area at curing molding working face is more than the image formation by rays pattern area at the lcd screen；When the light
When the distance of the photocentre of the solidified forming identity distance lens is less than 2L and is not equal to L, the light at the Stereolithography working face
Imagewise pattern area is less than the image formation by rays pattern area at the lcd screen.
Wherein, collector lens can be that convex lens, texture face are located at the Fresnel Lenses of lcd screen side, the optically focused
The primary optical axis of lens is perpendicular to the lcd screen；The collector lens is preferably Fresnel Lenses.Fresnel Lenses can eliminate
Part-spherical aberration.
Compared with prior art, above-mentioned photocuring printer is with the advantageous effects of projecting method：It is saturating using optically focused
Mirror converges to directional light, by setting the distance of collector lens and Stereolithography working face, Stereolithography is worked
Light pattern at face, in relation that is scaling or reducing, makes photocuring printer no longer with the light pattern at lcd screen
Limited by lcd screen production capacity.
The present invention also provides a kind of photocuring printer high-precision projection arrangement, including：The hair of area source can be produced
Optical assembly, lcd screen, collector lens and it is arranged on the LCD with the euphotic magazine of model separation, the collector lens
Between screen and model separation photic zone so that the imaging beam cooperatively formed by the luminescence component, lcd screen along parallel to
The key light direction of principal axis of the collector lens successively through the collector lens, model separation photic zone project after, can be on the inside of the magazine
Model separation photic zone side form the Stereolithography working face parallel with the lcd screen, and the Stereolithography work
The distance for making the photocentre of the identity distance lens is less than 2L and not equal to the focal length L of collector lens.When Stereolithography working face is at this
During the focal point of lens, i.e., the distance of the Stereolithography working face away from the optical center of lens is equal to L, and now pattern light is consolidated in light
It is that a bit, the function of 3D printing model can not be realized at chemical conversion type working face；When Stereolithography working face is away from the optical center of lens
Distance when being more than 2L, the image formation by rays pattern area at Stereolithography working face is more than the image formation by rays at lcd screen
Pattern area, it is impossible to which realization puies forward high-precision effect.
Preferably, the lcd screen is IPS formula screens.IPS formulas screen has 178 ° of wide viewing angles, and response speed is uniform, disappears
Except soft screen LCDs is when by ambient pressure with rocking, the fuzzy and water wave diffusion phenomena of appearance, figure can be improved
Precision of the case light in the time and spatially, so as to improve the formed precision of 3D printer.
Preferably, it is inclined with 35~60 degree in the polarizing coating being bonded on the lens side, the lcd screen
Shake angle.Under the polarization angle, the brightness for the light that the lcd screen passes through and the printing consumables being contained in the magazine
Curing rate spectrum be adapted.Polarizing coating is used for contrast and the brightness for adjusting lcd screen；Printing consumables is by solidification illumination
When penetrating, the solidification light guide of different brightness causes different curing rates occur, and LCD is controlled by setting the polarization angle of polarizing coating
The light transmittance of screen spot, the curing area and uncured area for making printing consumables form significant difference, so as to reduce " overexposure ", " owe
The occurrence probability of exposure ", makes photocuring printer higher with high-precision projection arrangement printing precision.
Further, the polarizing coating is rotatory polarization formula polarizing coating.Rotatory polarization（CPL）Formula polarizing coating is being filtered without using up
Afterwards, there be the round dot light for using up the polarised light to be formed and circumferentially rotating and forming balance, the saturation degree of the round dot light is higher, into
Type point is evenly.
Preferably, the photocuring printer is installed in printer main body with high-precision projection arrangement, the printer
Position regulator is provided with main body, the collector lens is moved by position regulator relative to Stereolithography working face
It is dynamic.Using position regulator adjustment collector lens and the distance of Stereolithography working face, the contracting of collector lens can be controlled
Small or multiplication factor.
Wherein, position regulator can be that printer main body is interior to be provided with position adjustment dress with female tubular member
Installation position is put, position regulator installation position is provided with the external screw thread being adapted to the internal thread, and the collector lens is installed on the pipe
In shape part, the tubular member spinning passes through the cooperation of tubular member and printer main body on the position regulator installation position
Adjust the distance of collector lens and Stereolithography working face.By fixed collector lens and magazine can also be installed on position
Adjusting apparatus is put to realize adjustment collector lens and the effect of Stereolithography working face distance.
Or the position regulator is with female tubular member, printer main body is interior to be provided with least three position
Adjusting apparatus installation position, the position regulator installation position, which is provided with, perforates, pivotally connected in the perforation to have and the internal thread
The gear of adaptation, the wheel shaft of the gear are provided with the handwheel rotated for handsetting gear, and the lens are installed on the tubular member
It is interior, it is installed on the position regulator installation position, is passed through by tubular member described in the internal thread and the engaged gears
Stir the distance of the handwheel adjustment collector lens and Stereolithography working face.
Compared with prior art, above-mentioned photocuring printer is with the advantageous effects of high-precision projection arrangement：
1. the distance away from the optical center of lens is less than 2L and is not equal to L using collector lens and setting Stereolithography working face, make
The luminous point for being radiated at the light pattern of Stereolithography working face reduces, corresponding, reduces printing consumables corresponding to the luminous point
Area, so as to improve the printing precision of photocuring printer projection arrangement；
2. the brightness of light and the curing rate spectrum for the printing consumables being contained in the magazine by making lcd screen transmission
It is adapted, the curing area of printing consumables and uncured area is formed significant difference, and then improves photocuring printer and filled with projection
The printing precision put.
The present invention also provides a kind of high-precision photocuring printer, including：Foregoing photocuring printer is projected with high accuracy
Device, shaped platform, XY are to precise motion mechanism, Z-direction precise motion mechanism, control unit and printer main body, the energy
Luminescence component, lcd screen, the collector lens for enough producing area source are installed on inside printer main body, in the printer main body
Upper surface be horizontally installed with XY to precise motion mechanism, the magazine is fixed on motion portions of the XY to precise motion mechanism
On part, Z-direction precise motion mechanism is installed in the upper surface of the printer main body, the shaped platform is fixed on the Z-direction
It can move on the moving component of precise motion mechanism and along perpendicular to the direction of the Stereolithography working face；The XY to
Precise motion mechanism, Z-direction precise motion mechanism electrically connect with described control unit respectively successively.
Wherein, there are German PI Corp., Q-521 Q-Motion small linear platforms in the producer for producing precise motion mechanism
In Q-521.330 least displacement 4nm ranks, stroke 32mm, Z can be realized by being equipped with E-873 Q-Motion servo controllers
To precise motion mechanism.U-723 PILine XY displacement platform stroke 22mm × 22mm, 0.1 μm of minimum stroke.
The advantageous effects of above-mentioned high-resolution photocuring printer are：Using XY to precise motion mechanism, can compared with
In small lcd screen size by magazine relative to the XY of imaging beam to relative movement, and by Z-direction precise motion mechanism,
Realize that shaped platform relatively moves relative to the Z-direction of Stereolithography working face, so as to realize printing high resolution 3 d model
Need, cost is low, simple in construction.
The present invention also provides a kind of photocuring printer projection arrangement, including：Can produce area source luminescence component,
Lcd screen, lens and with the euphotic magazine of model separation, the lens are arranged on the lcd screen and model separation
Between photic zone, so that by key light direction of principal axis of the imaging beam that the luminescence component, lcd screen cooperatively form along the lens
Successively through the lens, model separation photic zone project after, can on the inside of the magazine model separation photic zone side formed with
The parallel Stereolithography working face of the lcd screen, and the focal length of the lens is L, when the lens are collector lens,
The distance of the photocentre of the Stereolithography working face away from the lens is more than 2L, or, the lens are divergent lens.When lens are adopted
During with collector lens, when the distance of photocentre of the Stereolithography working face away from the lens is more than 2L, at Stereolithography working face
Image formation by rays pattern area be more than lcd screen at image formation by rays pattern area；When lens use divergent lens（Concavees lens）
When, image formation by rays pattern area of the imaging beam after divergent lens is magnifying state.
Preferably, the lcd screen is IPS formula screens.IPS formulas screen has 178 ° of wide viewing angles, and response speed is uniform, disappears
Except soft screen LCDs is when by ambient pressure with rocking, the fuzzy and water wave diffusion phenomena of appearance, figure can be improved
Precision of the case light in the time and spatially, so as to improve the formed precision of 3D printer.
Preferably, it is inclined with 35~60 degree in the polarizing coating being bonded on the lens side, the lcd screen
Shake angle, under the polarization angle, the brightness for the light that the lcd screen passes through and the printing consumables being contained in the magazine
Curing rate spectrum be adapted.Polarizing coating is used for contrast and the brightness for adjusting lcd screen；Printing consumables is by solidification illumination
When penetrating, the solidification light guide of different brightness causes different curing rates occur, and LCD is controlled by setting the polarization angle of polarizing coating
The light transmittance of screen spot, the curing area and uncured area for making printing consumables form significant difference, so as to reduce " overexposure ", " owe
The occurrence probability of exposure ", and then improve the printing precision of photocuring printer projection arrangement.
Further, the polarizing coating is rotatory polarization formula polarizing coating.Rotatory polarization（CPL）Formula polarizing coating is being filtered without using up
Afterwards, there be the round dot light for using up the polarised light to be formed and circumferentially rotating and forming balance, the saturation degree of the round dot light is higher, into
Type point is evenly.
Preferably, the photocuring printer is installed in printer main body with projection arrangement, in the printer main body
Provided with position regulator, the lens are moved by position regulator relative to Stereolithography working face.Using position
Adjusting apparatus adjusts the distance of lens and Stereolithography working face, and can control collector lens zooms in or out multiple.
Wherein, position regulator can be that printer main body is interior to be provided with position adjustment dress with female tubular member
Installation position is put, the position regulator installation position is provided with the external screw thread being adapted to the internal thread, and the lens are installed on the pipe
In shape part, the tubular member spinning passes through the cooperation of tubular member and printer main body on the position regulator installation position
Adjust the distance of lens and Stereolithography working face.Position adjustment dress can also be installed on by fixed lens and by magazine
Put to realize adjustment lens and the effect of Stereolithography working face distance.
Or the position regulator is with female tubular member, printer main body is interior to be provided with least three position
Adjusting apparatus installation position, the position regulator installation position, which is provided with, perforates, pivotally connected in the perforation to have and the internal thread
The gear of adaptation, the wheel shaft of the gear are provided with the handwheel rotated for handsetting gear, and the lens are installed on the tubular member
It is interior, it is installed on the position regulator installation position, is passed through by tubular member described in the internal thread and the engaged gears
Stir the distance of the handwheel adjustment collector lens and Stereolithography working face.
Compared with prior art, above-mentioned photocuring printer is with the advantageous effects of projection arrangement：Using lens pair
Pattern divergence of beam, so that the image formation by rays pattern area at Stereolithography working face and the image formation by rays figure at lcd screen
Case area is in a ratio of magnifying state, so as to print the 3D models for exceeding lcd screen specification.
Brief description of the drawings
Fig. 1 is a kind of profile of photocuring printer embodiment 1 of high-precision projection arrangement.
Fig. 2 is a kind of profile of photocuring printer embodiment 2 of high-precision projection arrangement.
Fig. 3 is a kind of profile of the embodiment 1 of photocuring printer projection arrangement.
Fig. 4 is a kind of profile of the embodiment 2 of photocuring printer projection arrangement.
Fig. 5 is a kind of profile for the lcd screen for posting polarizer.
Fig. 6 is the profile of another position regulator.
Fig. 7 is a kind of profile of high-precision photocuring printer, the wherein XY on printer top to precise motion mechanism,
The ratio of Z-direction precise motion mechanism section and figure differs, and reason is, can not be same in minimum mobile rank
Its structure is clearly expressed in width figure.
In figure, 1 is luminescence component, and 11 be spot light, and 12 be Fresnel Lenses, and 2 be lcd screen, and 21 be liquid crystal layer, and 22 is inclined
Shake piece, and 3 be lens, and 4 be magazine, and 41 be model separation photic zone, and 42 be printing consumables, and 43 be Stereolithography working face, and 5 are
Type-script, 61 be position regulator installation position, and 611 be gear, and 62 be position regulator, and 71 be XY to precise motion machine
Structure, 72 be Z-direction precise motion mechanism, and 8 be curing molding platform, and 9 be printer main body, and horizontal line 0 is photocentre position, and horizontal line L is
Focal position, horizontal line 2L are 2 times of focal lengths.
Embodiment
Illustrate the embodiment of the present invention with reference to the accompanying drawings and examples, but following examples are used only in detail
Describe the bright present invention in detail, the scope not limiting the invention in any way.
Embodiment 1：A kind of photocuring printer projecting method, referring to Fig. 1-3, comprises the following steps：
Step 1, by area source vertical irradiation in lcd screen 2, to form pattern light；
Step 2, by pattern light successively through collector lens 3, magazine 4 model separation photic zone 41 after project, in the inner side of magazine 4
The side of model separation photic zone 41 be Stereolithography working face 43, the focal length of collector lens 3 is L, Stereolithography work
Face 43 is parallel with lcd screen 2；When the distance of the photocentre of the optical soliton interaction face 43 away from the lens 3 is more than 2L, Stereolithography
Light pattern at working face 43 is more than the light pattern at lcd screen 2；When the light of the optical soliton interaction face 43 away from the lens 3
When the distance of the heart is less than 2L and is not equal to L, the light pattern at Stereolithography working face 43 is less than the light at lcd screen 2
Pattern.
In the present embodiment, collector lens 3 is preferably Fresnel Lenses, and Fresnel Lenses can eliminate Part-spherical aberration.
In other embodiments, collector lens 3 can be that convex lens, texture face are located at the Fresnel Lenses of the side of lcd screen 2, optically focused
The primary optical axis of lens 3 is perpendicular to lcd screen 2.
Application such as Fig. 1-3 of above-mentioned photocuring printer projecting method, wherein, in Fig. 1, optical soliton interaction face 43 is away from this
The distance of the photocentre of lens 3 is less than L more than 0, and the light pattern at Stereolithography working face 43 is less than the light at lcd screen 2
Line pattern, the pattern now printed using the photocuring printer of this method is deflated state, can improve printing precision, this
When break through the spot definition limitation of lcd screen 2 and print the type-script 5 of more small resolution ratio.In Fig. 2, optical soliton interaction face 43 away from
The distance of the photocentre of the lens 3 is less than 2L more than L, and the light pattern at Stereolithography working face 43 is less than at lcd screen 2
Light pattern, although light pattern is inversion state, the type-script 5 for having no effect on photocuring printer is molded, and is now applied
The pattern that the photocuring printer of this method prints is deflated state, now breaks through the spot definition limitation printing of lcd screen 2
The type-script 5 of more small resolution ratio.Printing precision can be improved.In Fig. 3, photocentre of the optical soliton interaction face 43 away from the lens 3
Distance is more than 2L, and the light pattern at Stereolithography working face 43 is more than the light pattern at lcd screen 2, although ray plot
Case is inversion state, but the type-script 5 for having no effect on photocuring printer is molded, now using the photocuring printer of this method
The pattern printed is magnifying state, and the size limitation for now breaking through lcd screen 2 prints larger sized type-script 5.
Compared with prior art, above-mentioned photocuring printer is with the advantageous effects of projecting method：It is saturating using optically focused
Mirror converges to directional light, by setting the distance of collector lens and Stereolithography working face, Stereolithography is worked
Light pattern at face, in relation that is scaling or reducing, makes photocuring printer no longer with the light pattern at lcd screen
Limited by lcd screen production capacity.
Embodiment 2：A kind of high-precision projection arrangement of photocuring printer, referring to Fig. 1, including：Area source can be produced
Luminescence component 1, lcd screen 2, collector lens 3 and the magazine 4 with model separation photic zone 41, what luminescence component 1 was sent
Directional light vertical irradiation forms pattern light, key light direction of principal axis of the pattern light edge parallel to collector lens 3 after lcd screen 2
Projected successively after the collector lens 3, model separation photic zone 41, be in the side of model separation photic zone 41 of the inner side of magazine 4
Stereolithography working face 43, Stereolithography working face 43 are parallel with lcd screen 2；The focal length of collector lens 3 is L, and the light is consolidated
Distance of the chemical conversion type working face 43 away from the photocentre of lens 3 is less than L.When Stereolithography working face 43 is in the focal point of the lens 3
When, i.e. distance of the Stereolithography working face 43 away from the photocentre of lens 3 is equal to L, and now pattern light is in Stereolithography work
Make to be that a bit, the function of 3D printing model can not be realized at face；When distance of the Stereolithography working face 43 away from the photocentre of lens 3
For more than 2L when, the moulding material of Stereolithography working face is magnifying state, it is impossible to realization put forward high-precision effect.
In the present embodiment, lcd screen 2 is IPS formula screens.IPS formulas screen has 178 ° of wide viewing angles, and response speed is uniform,
Soft screen LCDs is eliminated when by ambient pressure with rocking, the fuzzy and water wave diffusion phenomena of appearance, can be improved
Precision of the pattern light in the time and spatially, so as to improve the formed precision of 3D printer.
Referring to Fig. 5, close to the side of lens 3, the polarizing coating 22 that is bonded in lcd screen 2 there is 35 degree of polarization angle,
Under the polarization angle, the curing rate of the brightness for the light that lcd screen 2 passes through and the printing consumables 42 being contained in magazine 4
Spectrum is adapted.In other embodiments, close to the side of lens 3, the angle of polarization of polarizing coating 22 that is bonded in lcd screen 2
Degree can also be any value between 35~60 degree.Polarizing coating 22 is used for contrast and the brightness for adjusting lcd screen 2；Printing consumption
For material 42 when by solidification light irradiation, the solidification light guide of different brightness causes different curing rates occur, by setting polarizing coating
For polarization angle to control the light transmittance of lcd screen luminous point, the curing area and uncured area for making printing consumables form significant difference, from
And " overexposure ", the occurrence probability of " owing to expose " are reduced, make photocuring printer higher with high-precision projection arrangement printing precision.
In the present embodiment, polarizing coating 22 is rotatory polarization formula polarizing coating.Rotatory polarization（CPL）Formula polarizing coating is being filtered without using up
Afterwards, there be the round dot light for using up the polarised light to be formed and circumferentially rotating and forming balance, the saturation degree of the round dot light is higher, into
Type point is evenly.
Referring to Fig. 1, in the present embodiment, photocuring printer is installed in printer main body with high-precision projection arrangement, is beaten
Position regulator 62 is provided with print owner's body, collector lens 3 is worked by position regulator 62 relative to Stereolithography
Move in face 43.The distance of collector lens and Stereolithography working face is adjusted using position regulator 62, optically focused can be controlled
Lens zoom in or out multiple.
Referring to Fig. 1, in the present embodiment, position regulator 62 is with female tubular member, is set in printer main body
There is position regulator installation position 61, position regulator installation position 61 is provided with the external screw thread being adapted to the internal thread, and optically focused is saturating
Mirror 3 is installed in the tubular member, and the spinning of tubular member 3 passes through tubular member and printing owner in position regulator installation position 61
The distance of the cooperation adjustment collector lens and Stereolithography working face of body.
Above-mentioned photocuring printer is with the course of work of high-precision projection arrangement：Said apparatus is installed on into photocuring to beat
In print machine, after starting photocuring printer, it is less than lcd screen in the resolution ratio of the type-script of Stereolithography working face solidification
Resolution ratio, can be saturating by rotating clockwise or counterclockwise position regulator adjustment optically focused if wanting to adjust the resolution ratio of type-script
The distance of mirror and Stereolithography working face, can control collector lens zooms in or out multiple.Pay attention to：Photocuring should be controlled
Distance of the shaping work face 43 away from the photocentre of lens 3 is less than L.
Compared with prior art, above-mentioned photocuring printer is with the advantageous effects of high-precision projection arrangement：
1. the distance away from the optical center of lens is less than 2L and is not equal to L using collector lens and setting Stereolithography working face, make
The luminous point for the light pattern being radiated at Stereolithography working face reduces, corresponding, reduces printing consumables corresponding to the luminous point
Area, so as to improve the printing precision of photocuring printer projection arrangement；
2. the brightness of light and the curing rate spectrum for the printing consumables being contained in the magazine by making lcd screen transmission
It is adapted, the curing area of printing consumables and uncured area is formed significant difference, and then improves photocuring printer and filled with projection
The printing precision put.
Embodiment 3：Referring to Fig. 2, the present embodiment is identical with the major part of embodiment 2, and difference is, in the present embodiment,
The focal length of collector lens 3 is L, and distance of the Stereolithography working face 43 away from the photocentre of lens 3 is more than L and is less than 2L.This light
Solidify printer is with the application notice of high-precision projection arrangement：Stereolithography working face 43 should be controlled away from the lens 3
The distance of photocentre is less than 2L more than L.
Embodiment 4：A kind of photocuring printer projection arrangement, referring to Fig. 3, including：The luminous of area source can be produced
Component 1, lcd screen 2, lens 3 and the magazine 4 with model separation photic zone 41, the directional light that luminescence component 1 is sent are vertical
Pattern light is formed after being irradiated in lcd screen 2, key light direction of principal axis of the pattern light along lens 3 is successively through the lens 3, model point
It is Stereolithography working face 43 in the side of model separation photic zone 41 of the inner side of magazine 4 from being projected after photic zone 41, photocuring
Shaping work face 43 is parallel with lcd screen 2；In the present embodiment, when lens 3 are the collector lenses that focal length is L, the Stereolithography
The distance of photocentre of the working face 43 away from the lens 3 is more than 2L.When lens 3 using collector lens when, Stereolithography working face away from
When the distance of the photocentre of the lens is more than 2L, light pattern and the light pattern at lcd screen of Stereolithography working face are
Magnifying state.
In the present embodiment, lcd screen 2 is IPS formula screens.IPS formulas screen has 178 ° of wide viewing angles, and response speed is uniform,
Soft screen LCDs is eliminated when by ambient pressure with rocking, the fuzzy and water wave diffusion phenomena of appearance, can be improved
Precision of the pattern light in the time and spatially, so as to improve the formed precision of 3D printer.
Referring to Fig. 5, in the present embodiment, close to the side of lens 3, the polarizing coating 22 that is bonded in lcd screen 2 there are 35 degree
Polarization angle, under the polarization angle, the brightness and the printing that is contained in the magazine of the light that lcd screen 2 passes through consume
The curing rate spectrum of material is adapted.In other embodiments, close to the side of lens 3, the polarization that is bonded in lcd screen 2
The polarization angle of film 22 can also be any value between 35~60 degree.Polarizing coating is used for contrast and the brightness for adjusting lcd screen；
For printing consumables when by solidification light irradiation, the solidification light guide of different brightness causes different curing rates occur, is polarized by setting
For the polarization angle of film to control the light transmittance of lcd screen luminous point, the curing area and uncured area for making printing consumables form obvious area
Not, so as to reduce " overexposure ", " owe expose " occurrence probability, and then improve the printing precision of photocuring printer projection arrangement.
In the present embodiment, polarizing coating 22 is rotatory polarization formula polarizing coating.Rotatory polarization（CPL）Formula polarizing coating is being filtered without using up
Afterwards, there be the round dot light for using up the polarised light to be formed and circumferentially rotating and forming balance, the saturation degree of the round dot light is higher, into
Type point is evenly.
Referring to Fig. 3, in the present embodiment, photocuring printer is installed in printer main body with projection arrangement, prints owner
Position regulator 62 is provided with vivo, lens 3 are moved by position regulator 62 relative to Stereolithography working face 43.Adopt
With the distance of position regulator adjustment lens and Stereolithography working face, zooming in or out again for collector lens can be controlled
Number.
Referring to Fig. 3, in the present embodiment, position regulator 62 is with female tubular member, is set in printer main body
There is position regulator installation position 61, position regulator installation position 61 is provided with the external screw thread being adapted to the internal thread, described
Mirror 3 is installed in the tubular member, and tubular member spinning passes through tubular member and printer main body on position regulator installation position 61
Cooperation adjustment lens and Stereolithography working face distance.By fixed lens and magazine can also be installed on position
Adjusting apparatus adjusts lens and the effect of Stereolithography working face distance to realize.
Compared with prior art, above-mentioned photocuring printer is with the advantageous effects of projection arrangement：Using lens pair
Pattern divergence of beam, so that the light pattern of Stereolithography working face is in a ratio of amplification shape with the light pattern at lcd screen
State, so as to print the 3D models for exceeding lcd screen specification.
Above-mentioned photocuring printer is with the course of work of projection arrangement：Said apparatus is installed on photocuring printer
It is interior, after starting photocuring printer, it is more than the size of lcd screen in the size of the type-script of Stereolithography working face solidification,
If wanting to adjust the size of type-script, collector lens and photocuring can be adjusted by rotating clockwise or counterclockwise position regulator
The distance in shaping work face, can control collector lens zooms in or out multiple.Pay attention to：Stereolithography working face should be controlled
43 distances away from the photocentre of lens 3 are more than 2L.
Embodiment 5：Referring to Fig. 4, the present embodiment is identical with the major part of embodiment 4, and difference is, in the present embodiment,
Lens 3 are concavees lens, and concavees lens have the effect of divergent lens, now no longer need to consider to set Stereolithography working face 43
The distance between photocentre of lens 3.
In embodiment 2-5, referring to Fig. 6, position regulator 62 is with female tubular member, in printer main body
Provided with least three position regulator installation position 61,4 equally distributed position adjustments are provided with printer main body in figure 6
Device installation position 61, position regulator installation position 61, which is provided with, perforates, pivotally connected in perforation to have the tooth being adapted to the internal thread
Wheel 611, the wheel shaft of gear 611 is provided with handwheel, and lens 3 are installed in the tubular member, and pipe is engaged by internal thread and gear
Shape part is installed on position regulator installation position 61, and collector lens and Stereolithography working face are adjusted by rotating handwheel
Distance.It should be understood that gear 611 can also be fixed on magazine 4, lens 3 are set to movable part.
Embodiment 6：A kind of high-precision photocuring printer, referring to Fig. 7, including：Photochemical shown in embodiment 2 or 3 beats
Print machine is with high-precision projection arrangement, curing molding platform 8, control unit, XY to precise motion mechanism 71, Z-direction precise motion machine
Structure 72 and printer main body 9, luminescence component 1, lcd screen 2, the collector lens 3 that can produce area source are installed on printer
Inside main body 9, XY is horizontally installed with the upper surface of printer main body 9 to precise motion mechanism 71, for stress equalization, this reality
Apply and be mounted on XY at left and right sides of printer main body in example and be fixed on XY to precise motion to precise motion mechanism 71, magazine 4
On the moving component of mechanism 71, Z-direction precise motion mechanism 72 is installed in the upper surface of printer main body 9, shaped platform 8 is fixed
It can move on the moving component of Z-direction precise motion mechanism 72 and along perpendicular to the direction of Stereolithography working face 43；XY
Electrically connected respectively with control unit successively to precise motion mechanism and Z-direction precise motion mechanism.
Wherein, there is German PI Corp. in the producer for producing precise motion mechanism, and its product includes：Q-521 Q-Motion®
Q-521.330 least displacement 4nm ranks in small linear platform, stroke 32mm, are equipped with E-873 Q-Motion servos
Controller can realize Z-direction precise motion mechanism.U-723 PILine XY displacement platform stroke 22mm × 22mm, minimum stroke
0.1μm.XY can be selected as needed to precise motion mechanism, the model of Z-direction precise motion mechanism.
The course of work of above-mentioned high-resolution photocuring printer is：Printing consumables is poured into magazine, starts high-resolution
Rate photocuring prints main frame, drives magazine to be moved in XY to relative to imaging beam to precise motion mechanism by XY, so as to real
The function of larger image formation by rays pattern area is now printed, curing molding platform is driven in Z-direction phase by Z-direction precise motion mechanism
Moved for Stereolithography working face, so as to realize the function of 3D printing.
It should be understood that XY in embodiment 6 is to precise motion mechanism 71, Z-direction precise motion mechanism 72 and embodiment 2-3
Any one of in position regulator 62 and conflict, can coexist, one of them can also be only existed.
The present invention is described in detail above in conjunction with drawings and examples, still, those of skill in the art
Member can also be carried out it is understood that on the premise of present inventive concept is not departed to each design parameter in above-described embodiment
Change, forms multiple specific embodiments, is the common excursion of the present invention, is no longer described in detail one by one herein.
Claims (10)
1. a kind of photocuring printer projecting method, including by area source vertical irradiation on the lcd screen to form imaging
The step of beam, it is characterised in that further comprising the steps of：
By the imaging beam successively through collector lens, magazine model separation photic zone after project, make it in the magazine
The model separation photic zone side of side forms Stereolithography working face, and the focal length of the collector lens is L, described to be light-cured into
Type working face is parallel with the lcd screen；When the distance of the photocentre of the optical soliton interaction identity distance lens is more than 2L, the light
Image formation by rays pattern area at curing molding working face is more than the image formation by rays pattern area at the lcd screen；When the light
When the distance of the photocentre of the solidified forming identity distance lens is less than 2L and is not equal to L, the light at the Stereolithography working face
Imagewise pattern area is less than the image formation by rays pattern area at the lcd screen.
2. a kind of high-precision projection arrangement of photocuring printer, including can produce the luminescence component of area source, lcd screen with
And with the euphotic magazine of model separation, it is characterised in that also include being arranged between lcd screen and model separation photic zone
Collector lens so that the imaging beam cooperatively formed by the luminescence component, lcd screen is along the master parallel to the collector lens
Optical axis direction successively through the collector lens, model separation photic zone project after, can be in the model separation printing opacity on the inside of the magazine
Layer side forms the Stereolithography working face parallel with the lcd screen, and the Stereolithography working face is away from the lens
The distance of photocentre is less than 2L and not equal to the focal length L of collector lens.
3. a kind of photocuring printer projection arrangement, including the luminescence component of area source, lcd screen can be produced and carried
The euphotic magazine of model separation, it is characterised in that also saturating between lcd screen and model separation photic zone including being arranged on
Mirror, so that by key light direction of principal axis of the imaging beam that the luminescence component, lcd screen cooperatively form along the lens successively through being somebody's turn to do
After lens, model separation photic zone project, it can be formed and the LCD screen in the model separation photic zone side on the inside of the magazine
The parallel Stereolithography working face of curtain, and the focal length of the lens is L, when the lens are collector lens, the photocuring
The distance of the photocentre of the shaping work identity distance lens is more than 2L, or, the lens are divergent lens.
4. the projection arrangement according to Claims 2 or 3, it is characterised in that the lcd screen is IPS formula screens.
5. the projection arrangement according to Claims 2 or 3, it is characterised in that close to the lens side, described LCD
The polarizing coating being bonded on screen has 35~60 degree of polarization angle.
6. projection arrangement according to claim 5, it is characterised in that the polarizing coating is rotatory polarization formula polarizing coating.
7. the projection arrangement according to Claims 2 or 3, it is characterised in that the photocuring printer is projected with high accuracy
Device is installed in printer main body, is provided with position regulator in the printer main body, the collector lens passes through position
Adjusting apparatus moves relative to Stereolithography working face.
8. projection arrangement according to claim 7, it is characterised in that the position regulator is with female pipe
Shape part, printer main body is interior to be provided with position regulator installation position, and the position regulator installation position is provided with and the internal thread
The external screw thread of adaptation, the lens are installed in the tubular member, and the tubular member spinning is in the position regulator installation position
On, pass through tubular member and the distance of the cooperation adjustment collector lens and Stereolithography working face of printer main body.
9. projection arrangement according to claim 7, it is characterised in that the position regulator is with female pipe
Shape part, printer main body is interior to be provided with least three position regulator installation position, and the position regulator installation position is provided with and worn
Hole, pivotally connected in the perforation to have the gear being adapted to the internal thread, the wheel shaft of the gear is provided with for handsetting gear
The handwheel of rotation, the lens are installed in the tubular member, are pacified by tubular member described in the internal thread and the engaged gears
Loaded on the position regulator installation position, collector lens and Stereolithography working face are adjusted by stirring the handwheel
Distance.
10. a kind of high-precision photocuring printer, including shaped platform, printer main body, it is characterised in that also include：Right
It is required that photocuring printer described in 2 with high-precision projection arrangement, XY to precise motion mechanism and Z-direction precise motion mechanism,
The luminescence component that area source can be produced, lcd screen, collector lens are installed on inside printer main body, in the printing
The upper surface of owner's body is horizontally installed with XY to precise motion mechanism, and the magazine is fixed on the XY to precise motion mechanism
On moving component, Z-direction precise motion mechanism is installed in the upper surface of the printer main body, the shaped platform is fixed on institute
It can move on the moving component of ShuZXiang precise motions mechanism and along perpendicular to the direction of the Stereolithography working face.
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| CN201711056707.4A CN107584758A (en) | 2017-11-01 | 2017-11-01 | Photocuring printer projecting method, projection arrangement and the printer with the device |
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| CN109648851A (en) * | 2019-01-19 | 2019-04-19 | 郑州迈客美客电子科技有限公司 | Take into account the acquisition methods, array area source and light curring unit of the array area source of light intensity consistency and resolving accuracy |
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| CN110524874A (en) * | 2019-08-23 | 2019-12-03 | 源秩科技（上海）有限公司 | Photocuring 3D printing device and its Method of printing |
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| CN114506079A (en) * | 2022-02-25 | 2022-05-17 | 深圳市纵维立方科技有限公司 | Light source subassembly and 3D printer |
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| CN115061284A (en) * | 2022-07-19 | 2022-09-16 | 爱司凯科技股份有限公司 | Fresnel lens 3D printing edge light spot correction device and correction method |
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