CN105216320A - A kind of double light path projection exposure 3D printing equipment and method - Google Patents
A kind of double light path projection exposure 3D printing equipment and method Download PDFInfo
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- CN105216320A CN105216320A CN201510679434.3A CN201510679434A CN105216320A CN 105216320 A CN105216320 A CN 105216320A CN 201510679434 A CN201510679434 A CN 201510679434A CN 105216320 A CN105216320 A CN 105216320A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010146 3D printing Methods 0.000 title claims abstract description 24
- 238000006073 displacement reaction Methods 0.000 claims abstract description 29
- 230000033001 locomotion Effects 0.000 claims abstract description 13
- 230000003321 amplification Effects 0.000 claims abstract description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 9
- 238000007639 printing Methods 0.000 claims abstract description 9
- 238000003754 machining Methods 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000007711 solidification Methods 0.000 claims description 7
- 230000008023 solidification Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 13
- 239000002356 single layer Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
Abstract
The invention discloses a kind of double light path projection exposure 3D printing equipment and method, device comprises computer, large area projection aligner, accurate projection aligner, building mortion and for changing exposure mode and adjusting the high precision displacement platform of accurate projection aligner position.Large area projection aligner comprises ultraviolet source, dynamic mask plate, amplification projection lens, speculum; Accurate projection aligner comprises ultraviolet source, dynamic mask plate, reduced projection camera lens; Building mortion comprises photosensitive solution tank, part forming supporting plate and drives the workbench that moves both vertically of part forming supporting plate motion, and have photosensitive solution in photosensitive solution tank, part forming supporting plate is in photosensitive solution.Present invention also offers a kind of double light path light projection 3D Method of printing.The present invention can, according to the difference of part different parts to required precision, adopt corresponding projection aligner to process it, improves the making precision of part fine structure while ensureing part manufacturing speed.
Description
Technical field
The present invention relates to a kind of 3D printing equipment and method, be specifically related to a kind of double light path projection exposure 3D printing equipment and method.
Background technology
At present, photocuring 3D printing technique is the selective solidification being realized liquid photosensitive material by the elective irradiation of light source liquid towards light-sensitive material, then successively superposes, and forms the part with certain mechanical property.Light source scanning mode is mainly configured as master with successively spot scan, has scholar's research to scan by row and is shaped with face projection exposure, and increase forming speed by increasing single shaping area, this method can be raised the efficiency in theory.But mainly there is following problem in current projection exposure building mortion: when 1. general projection exposure 3D printing equipment makes fine structure, effective masking part only accounts for a very little part for dynamic mask plate, the pixel of dynamic mask plate cannot be made full use of, cause product fine structure precision low, if improve the making precision of product fine structure with the method increasing dynamic mask plate resolution ratio, greatly can increase the basis that building mortion becomes; 2. spliced projection exposure 3D printing equipment carries out single layer mask figure to be divided into several rectangular areas, and one by one exposure curing is carried out to these regions, the method can improve the utilization rate of dynamic mask plate pixel, and then improve product making precision, but the method has length consuming time, inefficient shortcoming.
Summary of the invention
The object of the invention is to overcome above-mentioned shortcoming, provide a kind of double light path projection exposure 3D printing equipment and method, this device and method first can utilize the part that in large area projection aligner making part, required precision is lower to utilize accurate projection aligner to make the part that in part, required precision is higher afterwards when making individual layer part, the last making successively having superposed part, is improving the make efficiency that ensure that part while part fine structure makes precision.
The object of the invention is to be realized by following technical proposals.
As one embodiment of the present invention, provide a kind of double light path projection exposure 3D printing equipment, high precision displacement platform, large area projection aligner, accurate projection aligner and building mortion that device comprises computer and is connected with described computer;
The 1# dynamic mask plate that described large area projection arrangement at least comprises 1# ultraviolet source, be inclined to set with 1# ultraviolet source outgoing beam, the amplification projection lens be arranged in parallel with 1# dynamic mask plate folded light beam face, and with the speculum amplifying projection lens transparent surface and angularly arrange;
The 2# dynamic mask plate that described accurate projection aligner at least comprises 2# ultraviolet source, is inclined to set with 2# ultraviolet source outgoing beam, and the reduced projection camera lens be arranged in parallel with 2# dynamic mask plate folded light beam face;
Described building mortion comprises photosensitive solution tank, is placed in the part forming supporting plate of photosensitive solution tank, and the workbench that moves both vertically be connected with described part forming supporting plate;
The ultraviolet light that 1# ultraviolet source sends, through the reflection of 1# dynamic mask plate, is irradiated to after amplifying the transmission of projection lens and the reflection of speculum on the part forming supporting plate working face in photosensitive solution tank, carries out the making of large area projection exposure; The ultraviolet light that 2# ultraviolet source sends is irradiated on the part forming supporting plate working face in photosensitive solution tank after the reflection of 2# dynamic mask plate and the transmission of reduced projection camera lens, carries out accurate projection exposure making, thus realizes double light path projection exposure 3D and print.
Preferably, the ultraviolet source of described 1# ultraviolet source, 2# ultraviolet source to be wavelength be 315 ~ 400nm, 1# ultraviolet source, 2# ultraviolet source, 1# dynamic mask plate, 2# dynamic mask plate are connected with computer respectively with high precision displacement platform.
Preferably, described accurate projection aligner is located on high precision displacement platform, can do two dimensional motion on high precision displacement platform.
Preferably, described speculum is located on high precision displacement platform, can do the rectilinear motion of conversion exposure mode on high precision displacement platform.
Preferably, described part forming supporting plate is connected with the workbench that moves both vertically, and part forming supporting plate can move both vertically with the workbench that moves both vertically.
Preferably, be filled with photosensitive solution in described photosensitive solution tank, part forming supporting plate is in photosensitive solution.
Correspondingly, present invention also offers a kind of double light path projection exposure 3D Method of printing, comprise the following steps:
1) threedimensional model of part is obtained, utilize Magics software, be large area processing part and Precision Machining part to the difference of requirement on machining accuracy by parts classify according to part zones of different, and obtain the relative position of each Precision Machining part in one-piece parts;
2) respectively layer process is cut to the large area processing part of part and Precision Machining part, obtain the mask graph of large area processing part and Precision Machining part;
3) amplification process is carried out to the mask graph of Precision Machining part, its multiplication factor is coupled with the minification of accurate projection aligner reduced projection camera lens, finally makes this part mask graph after accurate projection aligner, be projected in the size on sensitive liquid surface and the consistent size of this part;
4) computer controls speculum at high precision displacement platform movement, makes double light path projection exposure 3D printing equipment enter large area projection exposure pattern; 1# dynamic mask plate forms the image identical with current layer part large area processing part shape, 1# ultraviolet source sends ultraviolet light and form mask on sensitive liquid surface after the reflection of 1# dynamic mask plate image, amplification projection lens transmission and speculum reflection, make the selective solidification of sensitive liquid, complete the making of current layer part large area processing part; Simultaneous computer controls speculum at high precision displacement platform movement, makes double light path projection exposure 3D printing equipment enter accurate projection exposure pattern;
5) computer control precise projection aligner is at high precision displacement platform movement, accurate projection aligner is made to move to the position making current Precision Machining part, 2# dynamic mask plate forms the image identical with current Precision Machining partial shape, 2# ultraviolet source sends ultraviolet light and form mask on sensitive liquid surface after the image part sub reflector of 2# dynamic mask plate and the transmission of reduced projection camera lens, make the selective solidification of sensitive liquid, complete the making of current Precision Machining part;
6) step 5 is repeated), until complete the making of all Precision Machining parts in this layer, simultaneously part forming supporting plate moves up a thickness;
7) repeat step 4), 5), 6), until complete the making of this part.
Preferably, described each layer part forming time used is 0.5 ~ 120s.
Preferably, the thickness of each layer part is 0.01 ~ 0.2mm.
Preferably, the pixel size scope of described 1# dynamic mask plate and 2# dynamic mask plate is 0.005 ~ 0.05mm.
The present invention has following beneficial effect:
Double light path projection exposure 3D printing equipment of the present invention and method are when making part, first the threedimensional model of part is separated and layered shaping, obtains mask graph and the relative position of each Precision Machining part mask graph in this Rotating fields of large area processing part and Precision Machining part in every Rotating fields respectively; Next utilizes large area projection aligner to make the part that in part single layer structure, required precision is lower; Accurate projection aligner is again utilized to make the part that in part single layer structure, required precision is higher; The last making successively having superposed part.The method takes full advantage of the pixel of dynamic mask plate when making part fine structure, improve the make efficiency that ensure that part while part fine structure makes precision.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a application's part, does not form inappropriate limitation of the present invention, in the accompanying drawings:
Fig. 1 is large area exposure mode configuration schematic diagram of the present invention.
Fig. 2 is precise light mode configuration schematic diagram of the present invention.
Wherein, 1 is 1# ultraviolet source; 2 is 1# dynamic mask plate; 3 for amplifying projection lens; 4 is speculum; 5 is 2# ultraviolet source; 6 is 2# dynamic mask plate; 7 is reduced projection camera lens; 8 is photosensitive solution tank; 9 is part forming supporting plate; 10 is the workbench that moves both vertically; 11 is high precision displacement platform.
Detailed description of the invention
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as a limitation of the invention.
With reference to figure 1 and Fig. 2, double light path projection exposure 3D printing equipment of the present invention, comprises computer, the high precision displacement platform 11 be connected with described computer, large area projection aligner, accurate projection aligner and building mortion.Wherein:
Large area projection arrangement, the 1# dynamic mask plate 2 comprise 1# ultraviolet source 1, being inclined to set with 1# ultraviolet source 1 outgoing beam, the amplification projection lens 3 be arranged in parallel with 1# dynamic mask plate 2 folded light beam face, and with the speculum 4 amplifying projection lens 3 transparent surface and angularly arrange; 1# ultraviolet source 1 outgoing beam reflexes to by 1# dynamic mask plate 2 amplifies projection lens 3, after amplifying projection lens 3 printing opacity, transmitted light beam after speculum 4 reflects to building mortion.
1# ultraviolet source 1 is connected with computer, to realize the opening and closing of light source; 1# dynamic mask plate 2 is connected with computer, realizes the loading of mask graph.Speculum 4 is located on high precision displacement platform 11, and can do rectilinear motion on high precision displacement platform 11, to realize the conversion of exposure mode.
Accurate projection aligner, the 2# dynamic mask plate 6 comprising 2# ultraviolet source 5, be inclined to set with 2# ultraviolet source 5 outgoing beam, and the reduced projection camera lens 7 be arranged in parallel with 2# dynamic mask plate 6 folded light beam face; 2# ultraviolet source 5 outgoing beam is reflexed to reduced projection camera lens 7 by 2# dynamic mask plate 6, and after reduced projection camera lens 7 printing opacity, transmitted light beam is to building mortion.
2# ultraviolet source 5 is connected with computer, to realize the opening and closing of light source; 2# dynamic mask plate 6 is connected with computer, realizes the loading of mask graph.Accurate projection aligner is located on high precision displacement platform 11, can do two dimensional motion on high precision displacement platform 11.
Building mortion, comprises photosensitive solution tank 8, is placed in the part forming supporting plate 9 of photosensitive solution tank 8, and the workbench 10 that moves both vertically be connected with part forming supporting plate 9; Be filled with photosensitive solution in photosensitive solution tank 8, part forming supporting plate 9 is in photosensitive solution.Part forming supporting plate 9 is connected with the workbench 10 that moves both vertically, and part forming supporting plate 9 can move both vertically with the workbench 10 that moves both vertically.
When large area projection aligner works, the ultraviolet light that 1# ultraviolet source 1 sends, through the reflection of 1# dynamic mask plate 2, is irradiated on part forming supporting plate 9 working face in photosensitive solution tank 8 after amplifying the transmission of projection lens 3 and the reflection of speculum 4; When accurate projection aligner work, the ultraviolet light that 2# ultraviolet source 5 sends is irradiated on part forming supporting plate 9 working face in photosensitive solution tank 8 after the reflection of 2# dynamic mask plate 6 and the transmission of reduced projection camera lens 7, thus realizes double light path projection exposure 3D and print.
Double light path projection exposure 3D Method of printing of the present invention comprises the following steps:
1) threedimensional model of part is obtained, utilize Magics software, be large area processing part and Precision Machining part according to part zones of different by parts classify to the difference of requirement on machining accuracy and obtain the relative position of each Precision Machining part in one-piece parts;
2) respectively layer process is cut to the large area processing part of part and Precision Machining part, obtain the mask graph of large area processing part and Precision Machining part;
3) amplification process is carried out to the mask graph of Precision Machining part, its multiplication factor is coupled with the minification of accurate projection aligner reduced projection camera lens, finally makes this part mask graph after accurate projection aligner, be projected in the size on sensitive liquid surface and the consistent size of this part;
4) computer control speculum 4 moves at high precision displacement platform 11, double light path projection exposure 3D printing equipment is made to enter large area projection exposure pattern station as shown in Figure 1, 1# dynamic mask plate 2 forms the image identical with current layer part large area processing part shape, 1# ultraviolet source 1 sends the image part sub reflector of ultraviolet light through 1# dynamic mask plate 2, mask is formed on sensitive liquid surface after amplifying the transmission of projection lens 3 and the reflection of speculum 4, realize the selective solidification to sensitive liquid, complete the making of current layer part large area processing part, simultaneous computer controls speculum 4 and moves at high precision displacement platform 11, double light path projection exposure 3D printing equipment is made to enter essence close projection exposure pattern station as shown in Figure 2,
5) computer control precise projection aligner high precision displacement platform 11 moves, accurate projection aligner is made to move to the position making current Precision Machining part, 2# dynamic mask plate 6 forms the image identical with current Precision Machining partial shape, 2# ultraviolet source 5 sends ultraviolet light and form mask on sensitive liquid surface after the image part sub reflector of 2# dynamic mask plate 6 and the transmission of reduced projection camera lens 7, realize the selective solidification to sensitive liquid, complete the making of current Precision Machining part;
6) step 5 is repeated), until complete the making of all Precision Machining parts in this layer, simultaneously part forming supporting plate 9 moves up a thickness;
7) repeat step 4), 5), 6), until complete the making of this part.
Wherein, each layer part forming time used is 0.5 ~ 120s.The thickness of each layer part is 0.01 ~ 0.2mm.
The pixel size scope of dynamic mask plate is 0.005 ~ 0.05mm.
For realizing the conversion of large area projection exposure pattern and accurate projection exposure pattern and accurate exposure device accurate motion to operating position, speculum 4 and accurate projection aligner independently can do two dimensional motion respectively on high precision displacement platform 11.
In this device, large area projection aligner and accurate projection aligner are not limited to described structure, use ultraviolet source wavelength to be that the light source of 315 ~ 400nm wave band or other frame for movement also can realize above-mentioned requirements.
This device takes full advantage of the pixel of dynamic mask plate when making part fine structure, improve the make efficiency that ensure that part while part fine structure makes precision.
Claims (10)
1. a double light path projection exposure 3D printing equipment, is characterized in that, the high precision displacement platform (11), large area projection aligner, accurate projection aligner and the building mortion that comprise computer and be connected with described computer;
The 1# dynamic mask plate (2) that described large area projection arrangement at least comprises 1# ultraviolet source (1), be inclined to set with 1# ultraviolet source (1) outgoing beam, the amplification projection lens (3) be arranged in parallel with 1# dynamic mask plate (2) folded light beam face, and with the speculum (4) amplifying projection lens (3) transparent surface and angularly arrange;
The 2# dynamic mask plate (6) that described accurate projection aligner at least comprises 2# ultraviolet source (5), is inclined to set with 2# ultraviolet source (5) outgoing beam, and the reduced projection camera lens (7) be arranged in parallel with 2# dynamic mask plate (6) folded light beam face;
Described building mortion comprises photosensitive solution tank (8), is placed in the part forming supporting plate (9) of photosensitive solution tank (8), and the workbench that moves both vertically (10) be connected with described part forming supporting plate (9);
The reflection of ultraviolet light through 1# dynamic mask plate (2) that 1# ultraviolet source (1) sends, be irradiated to after amplifying the transmission of projection lens (3) and the reflection of speculum (4) on part forming supporting plate (9) working face in photosensitive solution tank (8), carry out the making of large area projection exposure; The ultraviolet light that 2# ultraviolet source (5) sends is irradiated on part forming supporting plate (9) working face in photosensitive solution tank (8) after the reflection of 2# dynamic mask plate (6) and the transmission of reduced projection camera lens (7), carry out accurate projection exposure making, thus realize double light path projection exposure 3D and print.
2. double light path projection exposure 3D printing equipment according to claim 1, it is characterized in that, described 1# ultraviolet source (1), 2# ultraviolet source (5) for wavelength be the ultraviolet source of 315 ~ 400nm, 1# ultraviolet source (1), 2# ultraviolet source (5), 1# dynamic mask plate (2), 2# dynamic mask plate (6) are connected with computer respectively with high precision displacement platform (11).
3. double light path projection exposure 3D printing equipment according to claim 1, is characterized in that, described accurate projection aligner is located on high precision displacement platform (11), can do two dimensional motion on high precision displacement platform (11).
4. double light path projection exposure 3D printing equipment according to claim 1, it is characterized in that, described speculum (4) is located on high precision displacement platform (11), can do the rectilinear motion of conversion exposure mode on high precision displacement platform (11).
5. double light path projection exposure 3D printing equipment according to claim 1, it is characterized in that, described part forming supporting plate (9) is connected with the workbench that moves both vertically (10), and part forming supporting plate (9) can move both vertically with the workbench that moves both vertically (10).
6. double light path projection exposure 3D printing equipment according to claim 1, is characterized in that, be filled with photosensitive solution in described photosensitive solution tank (8), part forming supporting plate (9) is in photosensitive solution.
7. a double light path projection exposure 3D Method of printing, is characterized in that, comprise the following steps:
1) threedimensional model of part is obtained, utilize Magics software, be large area processing part and Precision Machining part to the difference of requirement on machining accuracy by parts classify according to part zones of different, and obtain the relative position of each Precision Machining part in one-piece parts;
2) respectively layer process is cut to the large area processing part of part and Precision Machining part, obtain the mask graph of large area processing part and Precision Machining part;
3) amplification process is carried out to the mask graph of Precision Machining part, its multiplication factor is coupled with the minification of accurate projection aligner reduced projection camera lens (7), finally makes this part mask graph after accurate projection aligner, be projected in the size on sensitive liquid surface and the consistent size of this part;
4) computer control speculum (4) is mobile at high precision displacement platform (11), makes double light path projection exposure 3D printing equipment enter large area projection exposure pattern; 1# dynamic mask plate (2) forms the image identical with current layer part large area processing part shape, 1# ultraviolet source (1) sends ultraviolet light and form mask on sensitive liquid surface after the reflection of 1# dynamic mask plate (2) image, amplification projection lens (3) transmission and speculum (4) reflection, make the selective solidification of sensitive liquid, complete the making of current layer part large area processing part; It is mobile at high precision displacement platform (11) that simultaneous computer controls speculum (4), makes double light path projection exposure 3D printing equipment enter accurate projection exposure pattern;
5) computer control precise projection aligner is mobile at high precision displacement platform (11), accurate projection aligner is made to move to the position making current Precision Machining part, 2# dynamic mask plate (6) forms the image identical with current Precision Machining partial shape, 2# ultraviolet source (5) sends ultraviolet light and form mask on sensitive liquid surface after the image part sub reflector of 2# dynamic mask plate (6) and the transmission of reduced projection camera lens (7), make the selective solidification of sensitive liquid, complete the making of current Precision Machining part;
6) step 5 is repeated), until complete the making of all Precision Machining parts in this layer, simultaneously part forming supporting plate (9) moves up a thickness;
7) repeat step 4), 5), 6), until complete the making of this part.
8. double light path projection exposure 3D Method of printing according to claim 7, is characterized in that, described each layer part forming time used is 0.5 ~ 120s.
9. double light path projection exposure 3D Method of printing according to claim 7, is characterized in that, the thickness of each layer part is 0.01 ~ 0.2mm.
10. double light path projection exposure 3D Method of printing according to claim 7, is characterized in that, the pixel size scope of described 1# dynamic mask plate (2) and 2# dynamic mask plate (6) is 0.005 ~ 0.05mm.
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| CN201510679434.3A CN105216320B (en) | 2015-10-19 | 2015-10-19 | Dual-optical-path projection exposure 3D printing device and method |
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| CN201510679434.3A CN105216320B (en) | 2015-10-19 | 2015-10-19 | Dual-optical-path projection exposure 3D printing device and method |
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| CN105856577A (en) * | 2016-06-21 | 2016-08-17 | 安徽机电职业技术学院 | Photocuring rapid moulding machine |
| CN107932910A (en) * | 2017-12-26 | 2018-04-20 | 浙江大学 | Projection optical soliton interaction device based on two-way incident light |
| CN108422660A (en) * | 2018-06-14 | 2018-08-21 | 南通理工学院 | D L P projection-based photocuring three-dimensional printing method and device |
| CN108927993A (en) * | 2017-05-26 | 2018-12-04 | 三纬国际立体列印科技股份有限公司 | The photocuring 3D printing method of multiple light courcess module |
| CN110267795A (en) * | 2016-12-07 | 2019-09-20 | Dws有限公司 | Stereo lithography machine with improved optics group |
| CN110450420A (en) * | 2018-08-06 | 2019-11-15 | 杭州乐一新材料科技有限公司 | A kind of multiple plate 3D printer and Method of printing |
| CN111497231A (en) * | 2020-04-15 | 2020-08-07 | 广州黑格智造信息科技有限公司 | 3D printing method and device, storage medium and 3D printing system |
| CN112060571A (en) * | 2020-08-31 | 2020-12-11 | 深圳市纵维立方科技有限公司 | Printing method and printing apparatus |
| CN112549537A (en) * | 2020-11-13 | 2021-03-26 | 深圳摩方新材科技有限公司 | Double-lens combined precision speed-increasing 3D printing device and printing method |
| CN112693113A (en) * | 2020-12-10 | 2021-04-23 | 浙江大学 | Rapid material increase manufacturing system based on projection three-dimensional reconstruction |
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| CN112549537A (en) * | 2020-11-13 | 2021-03-26 | 深圳摩方新材科技有限公司 | Double-lens combined precision speed-increasing 3D printing device and printing method |
| CN112693113A (en) * | 2020-12-10 | 2021-04-23 | 浙江大学 | Rapid material increase manufacturing system based on projection three-dimensional reconstruction |
| CN112693113B (en) * | 2020-12-10 | 2022-04-19 | 浙江大学 | Rapid material increase manufacturing system based on projection three-dimensional reconstruction |
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