CN111531877A - High printing opacity black and white screen 3D printer - Google Patents
High printing opacity black and white screen 3D printer Download PDFInfo
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- CN111531877A CN111531877A CN202010517806.3A CN202010517806A CN111531877A CN 111531877 A CN111531877 A CN 111531877A CN 202010517806 A CN202010517806 A CN 202010517806A CN 111531877 A CN111531877 A CN 111531877A
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- black
- light source
- screen
- light
- white
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
- B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
- B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a high-light-transmission black-white screen 3D printer which comprises a fixed frame, a Z-axis moving mechanism, a construction platform plate and a photosensitive resin groove, wherein the Z-axis moving mechanism and the photosensitive resin groove are respectively arranged on the fixed frame; the optical conversion lens is a hemispherical lens. The black-white liquid crystal screen is used for transmitting light, divergent light rays of the LED light source are converted into ultraviolet light rays with integrated and relatively uniform energy through the optical conversion lens, the LED light source adopts a flip chip LED, the heat dissipation performance of the light source and the black-white liquid crystal screen in the whole scheme is very good, the light utilization rate is greatly improved under the same power, and the printing speed and precision can be greatly improved.
Description
Technical Field
The invention relates to the field of 3D printing, in particular to a high-light-transmission black-white screen 3D printer.
Background
In the prior art, the LCD 3D printer on the market mainly adopts a light source scheme of a vertical chip LED emission light source and a reflecting cover, and then an LCD screen mainly adopts an RGB color screen. The consequence of this is that after the ultraviolet light passes through the LCD screen, the central optical power of the light source is high, and the peripheral optical power is low, resulting in a large size deviation in a model (± 0.05mm) with a high print size requirement precision due to different optical power at different positions and different ultraviolet energy absorbed by the resin during the curing process. Because the function of bowl is the purple light that collects and reflect the LED light source and send, the light ratio that collects through the bowl is messy to there is the parasitic light, can not embody the fine detail of model.
The RGB color screen can block 90% of purple light below the screen due to low transmittance, so that the service life of the screen is influenced due to overlarge heat productivity of the screen. And therefore addresses the above disadvantages. It is necessary to provide a black-and-white screen with high transmittance and a light source assembly thereof.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a high printing opacity black-and-white screen 3D printer, light can direct even shine black-and-white screen, can improve the utilization ratio of light under the same power, and the penetration rate of purple light is higher than 3 ~ 4 times of the various screen of RGB under the same condition, and it is efficient to print, prints the precision height, and the radiating effect of printing the process is very good.
The technical scheme of the invention is as follows: the utility model provides a high printing opacity black and white screen 3D printer, includes mount, Z axle moving mechanism, founds landing slab, photosensitive resin groove, Z axle moving mechanism, photosensitive resin groove locate on the mount respectively, Z axle moving mechanism connects the bottom and founds the landing slab, it is located photosensitive resin groove top to found the landing slab, still includes black and white LCD screen, optics conversion lens, LED light source, photosensitive resin groove below is located to the black and white LCD screen, optics conversion lens locates LED light source top.
Wherein the optical conversion lens is a hemispherical lens.
By adopting the technical scheme, in the high-light-transmission black-white screen 3D printer, the bottom of the hemispherical lens is provided with the lens base which is arranged in a hollow mode, and the lens base is positioned on the LED light source.
By adopting the technical scheme, in the high-light-transmission black-white screen 3D printer, the LED light source is a flip chip LED.
By adopting the technical scheme, the high-transmittance black-white screen 3D printer further comprises a light shield, the black-white liquid crystal screen is positioned at the top of the light shield, and the optical conversion lens and the LED light source are positioned in the light shield.
By adopting the technical scheme, the black-and-white liquid crystal screen is transparent, the divergent light of the LED light source is converted into the ultraviolet light with integrated and uniform energy through the optical conversion lens, the LED light source adopts the flip chip LED, and the heat dissipation performance of the light source and the black-and-white liquid crystal screen in the whole scheme is very good. A reflecting cover is not needed to collect light, and the light utilization rate is greatly improved under the same power. The single-layer exposure time of the black-white liquid crystal screen is 3-4 times of that of the RGB color screen, 3-4 times of time can be saved when the same model is printed by the scheme, the printing speed can be greatly improved, and the printing precision can be improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic longitudinal section of the present invention;
FIG. 3 is a schematic view of a light source module according to the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
As shown in fig. 1 to 3, the embodiment provides a high-transmittance black-white screen 3D printer, which includes a fixing frame, a Z-axis moving mechanism, a building platform plate, a photosensitive resin groove, a black-white liquid crystal screen, an optical conversion lens, and an LED light source. Z axle moving mechanism, photosensitive resin groove locate the mount respectively on, Z axle moving mechanism connects in the bottom and founds the landing slab, it is located photosensitive resin groove top to found the landing slab, photosensitive resin groove below is located to the black and white LCD screen, optics conversion lens locates the LED light source top.
The optical conversion lens is a hemispherical lens, a lens base is arranged at the bottom of the hemispherical lens, the lens base is arranged in a hollow mode, and the lens base is located on the LED light source. After the LED light source emits light, the hemispherical lens can convert inclined light rays emitted by the LED light source into ultraviolet light rays which are integrated in energy and relatively uniform.
The energy-integrated and relatively uniform ultraviolet light passes through the black-and-white liquid crystal screen, and the black-and-white liquid crystal screen has high light transmittance, and of course, the high light transmittance referred to in this embodiment refers to the transmittance of violet light. The black-white liquid crystal screen has no color filter sheet in each pixel point, and purple light can directly pass through the black-white liquid crystal screen. Compared with the conventional RGB color screen, the black-and-white liquid crystal screen in this embodiment: the penetration rate of the purple light is 3-4 times higher than that of the RGB color screen under the same condition. Meanwhile, the heating value of the black-and-white liquid crystal screen can be greatly reduced, and the service life of the black-and-white liquid crystal screen is prolonged. The power of the whole machine can be reduced, and the power of the whole machine can be reduced by 1/3 compared with an RGB color screen under the same scheme.
The traditional scheme adopts a forward-mounted chip LED, and the LED light source of the embodiment is a flip-chip LED. Flip chip LEDs are applied in 3D printing with very obvious effects: the chips can be placed more densely and in the same size, more chips can be placed in the flip chip, and the characteristic of small-size large-current light concentration is realized. In addition, the direct and substrate contact heat dispersion of flip chip is better, does not need fin and radiator fan, in 3D prints, has very big promotion to the reduction of cost and packaging efficiency.
As shown in fig. 2, in this embodiment, a light shield is further provided, the black-and-white liquid crystal screen is located on top of the light shield, and the optical conversion lens and the LED light source are located in the light shield. The lens hood can shield and absorb redundant ultraviolet rays to prevent the rays from irradiating the outside.
As shown in fig. 1 and 2, the specific working process of 3D printing is as follows:
1. the LED light source emits ultraviolet light with a specific wave band at a certain angle, and the ultraviolet light is uniformly irradiated on the black-white liquid crystal screen through the conversion of the optical conversion lens.
2. The ultraviolet light converted by the optics passes through the black and white liquid crystal panel.
3. A photosensitive resin groove is arranged above the black-white liquid crystal screen, and liquid photosensitive resin is filled in the photosensitive resin groove.
4. The black and white liquid crystal screen displays the required pattern under the control of the driving board.
5. The pattern displayed by the black-white liquid crystal screen is irradiated by the ultraviolet light converted by the optics, and passes through the black-white liquid crystal screen and the photosensitive resin in the material groove to carry out curing reaction.
6. The resin above the non-display area of the black and white liquid crystal screen is in a liquid state, and the cured resin is located on the build platform plate.
7. The black-white liquid crystal screen continuously displays the required shape under the action of the driving board, and simultaneously the Z axis moves up and down to drive the building platform board to move up and down, so that the resin is solidified on the building platform board layer by layer, and the required three-dimensional product is printed out repeatedly.
By adopting the technical scheme, the black-and-white liquid crystal screen is transparent, the divergent light of the LED light source is converted into the ultraviolet light with integrated and uniform energy through the optical conversion lens, the LED light source adopts the flip chip LED, and the heat dissipation performance of the light source and the black-and-white liquid crystal screen in the whole scheme is very good. A reflecting cover is not needed to collect light, and the light utilization rate is greatly improved under the same power. The single-layer exposure time of the black-white liquid crystal screen is 3-4 times of that of the RGB color screen, 3-4 times of time can be saved when the same model is printed by the scheme, the printing speed can be greatly improved, and the printing precision can be improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A high-light-transmission black-white screen 3D printer comprises a fixing frame, a Z-axis moving mechanism, a construction platform plate and a photosensitive resin groove, wherein the Z-axis moving mechanism and the photosensitive resin groove are respectively arranged on the fixing frame;
wherein the optical conversion lens is a hemispherical lens.
2. The high-transmittance black-and-white screen 3D printer according to claim 1, wherein the hemispherical lens is provided with a lens base at the bottom, the lens base is hollow, and the lens base is located on the LED light source.
3. The high-transmittance black-and-white screen 3D printer according to claim 2, wherein the LED light source is a flip-chip LED.
4. The high-transmittance black-and-white screen 3D printer according to claim 1, further comprising a light shield, wherein the black-and-white liquid crystal screen is positioned on top of the light shield, and the optical conversion lens and the LED light source are positioned in the light shield.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010517806.3A CN111531877A (en) | 2020-06-09 | 2020-06-09 | High printing opacity black and white screen 3D printer |
| PCT/CN2020/110126 WO2021248689A1 (en) | 2020-06-09 | 2020-08-20 | High light transmittance black and white screen 3d printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010517806.3A CN111531877A (en) | 2020-06-09 | 2020-06-09 | High printing opacity black and white screen 3D printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111531877A true CN111531877A (en) | 2020-08-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010517806.3A Pending CN111531877A (en) | 2020-06-09 | 2020-06-09 | High printing opacity black and white screen 3D printer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111531877A (en) |
| WO (1) | WO2021248689A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021248689A1 (en) * | 2020-06-09 | 2021-12-16 | 深圳市智能派科技有限公司 | High light transmittance black and white screen 3d printer |
| WO2022036584A1 (en) * | 2020-08-19 | 2022-02-24 | 普罗森科技股份有限公司 | Three-dimensional printer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114536749B (en) * | 2022-01-28 | 2023-10-27 | 华南理工大学 | Dynamic backlight distribution real-time calculation method for LCD photo-curing 3D printer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108466427A (en) * | 2017-02-23 | 2018-08-31 | 上海冠显光电科技有限公司 | A kind of photocuring 3D printing optical module and photocuring 3D printing system |
| CN208343459U (en) * | 2018-06-21 | 2019-01-08 | 中南大学 | A kind of rapid photocuring LCD 3D printer |
| MX2021000015A (en) * | 2018-06-29 | 2021-03-09 | Intrepid Automation | Closed loop print process adjustment based on real time feedback. |
| KR102263697B1 (en) * | 2018-07-09 | 2021-06-16 | 이광민 | A 3D printer forming a 3-dimensional object |
| CN209022451U (en) * | 2018-07-30 | 2019-06-25 | 中南大学 | A kind of micro-nano processing of large scale and increasing material manufacturing equipment |
| CN110328853A (en) * | 2019-08-22 | 2019-10-15 | 上海幻嘉信息科技有限公司 | A kind of colour photocuring 3D printing system |
| CN111531877A (en) * | 2020-06-09 | 2020-08-14 | 深圳市智能派科技有限公司 | High printing opacity black and white screen 3D printer |
-
2020
- 2020-06-09 CN CN202010517806.3A patent/CN111531877A/en active Pending
- 2020-08-20 WO PCT/CN2020/110126 patent/WO2021248689A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021248689A1 (en) * | 2020-06-09 | 2021-12-16 | 深圳市智能派科技有限公司 | High light transmittance black and white screen 3d printer |
| WO2022036584A1 (en) * | 2020-08-19 | 2022-02-24 | 普罗森科技股份有限公司 | Three-dimensional printer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021248689A1 (en) | 2021-12-16 |
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