CN111531877B - High printing opacity black and white screen 3D printer - Google Patents
High printing opacity black and white screen 3D printerInfo
- Publication number
- CN111531877B CN111531877B CN202010517806.3A CN202010517806A CN111531877B CN 111531877 B CN111531877 B CN 111531877B CN 202010517806 A CN202010517806 A CN 202010517806A CN 111531877 B CN111531877 B CN 111531877B
- Authority
- CN
- China
- Prior art keywords
- black
- light source
- screen
- white
- led light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
-
- 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
Landscapes
- 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
本发明公开了一种高透光黑白屏3D打印机，包括固定架、Z轴移动机构、构建平台板、光敏树脂槽，Z轴移动机构、光敏树脂槽分别设于固定架上，Z轴移动机构底部连接构建平台板，构建平台板位于光敏树脂槽上方，还包括黑白液晶屏、光学转换透镜、LED光源，黑白液晶屏设于光敏树脂槽下方，光学转换透镜设于LED光源上方；光学转换透镜为半球形透镜。本发明采用黑白液晶屏透光，通过光学转换透镜将LED光源的发散光线转换成能量集成且比较均匀的紫外光线，LED光源采用倒装芯片LED，整个方案的光源和黑白液晶屏的散热性能都非常好，在同样的功率下大大的提高了光的利用率，能极大提高打印的速度及精度。
The present invention discloses a high-transmittance black-and-white screen 3D printer, comprising a fixed frame, a Z-axis moving mechanism, a building platform plate, and a photosensitive resin tank. The Z-axis moving mechanism and the photosensitive resin tank are respectively arranged on the fixed frame, and the bottom of the Z-axis moving mechanism is connected to the building platform plate, which is located above the photosensitive resin tank. The printer also comprises a black-and-white liquid crystal screen, an optical conversion lens, and an LED light source. The black-and-white liquid crystal screen is located below the photosensitive resin tank, and the optical conversion lens is located above the LED light source; the optical conversion lens is a hemispherical lens. The present invention uses a black-and-white liquid crystal screen for light transmission, and the optical conversion lens converts the divergent light of the LED light source into energy-integrated and relatively uniform ultraviolet light. The LED light source uses a flip-chip LED. The heat dissipation performance of the light source and the black-and-white liquid crystal screen of the entire scheme is very good, greatly improving the utilization rate of light at the same power, and can greatly improve the speed and accuracy of printing.
Description
Technical Field
The invention relates to the field of 3D printing, in particular to a high-light-transmission black-and-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 result of this is that after the uv light passes through the LCD screen, the central light power of the light source is high, the peripheral light power is low, and thus, in a model (0.05 mm) with higher printing size requirement precision, the size deviation is larger due to the different light powers at different positions and the different absorbed uv light energy of the resin in the curing process. The effect of the reflecting cover is to collect and reflect the purple light emitted by the LED light source, the light collected by the reflecting cover is messy, stray light exists, and good details of the model cannot be represented.
The adoption of the RGB color screen can block 90% of purple light below the screen due to the lower transmittance, so that the screen heating value is too large to influence the service life of the screen. Thus addressing the above drawbacks. It is necessary to emit a black-and-white screen with high transmittance and a light source assembly matched with the black-and-white screen.
Disclosure of Invention
The invention aims to solve the technical problems of providing the high-light-transmission black-and-white screen 3D printer, light can be directly and uniformly irradiated to the black-and-white screen, the light utilization rate can be improved under the same power, the transmittance of purple light is 3-4 times higher than that of an RGB color screen under the same condition, the printing efficiency is high, the printing precision is high, and the heat dissipation effect in the printing process is very good.
The technical scheme is that the high-light-transmittance black-and-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, the bottom of the Z-axis moving mechanism is connected with the construction platform plate, the construction platform plate is positioned above the photosensitive resin groove, the high-light-transmittance black-and-white screen 3D printer further comprises a black-and-white liquid crystal screen, an optical conversion lens and an LED light source, the black-and-white liquid crystal screen is arranged below the photosensitive resin groove, and the optical conversion lens is arranged above the LED light source.
Wherein the optical conversion lens is a hemispherical lens.
By adopting the technical schemes, in the high-light-transmittance black-and-white screen 3D printer, the bottom of the hemispherical lens is provided with the lens base, the lens base is hollow, and the lens base is positioned on the LED light source.
By adopting the technical schemes, in the high-light-transmittance black-and-white screen 3D printer, the LED light source is a flip chip LED.
By adopting the technical schemes, the high-transmittance black-and-white screen 3D printer further comprises a light shield, the black-and-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 schemes, the LED light source adopts the black-and-white liquid crystal screen to transmit light, the divergent light of the LED light source is converted into the ultraviolet light which is integrated in energy and relatively uniform through the optical conversion lens, and the LED light source adopts the flip-chip LED, so that the heat dissipation performance of the light source and the black-and-white liquid crystal screen in the whole scheme is very good. The reflection 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-and-white liquid crystal screen is 3-4 times that of the RGB color screen, the same model can save 3-4 times of time when being used for printing, the printing speed can be greatly improved, and the printing precision is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic longitudinal cross-sectional view of the present invention;
fig. 3 is a schematic view of a light source assembly according to the present invention.
Detailed Description
The invention will be described in detail below with reference to the drawings and the specific embodiments.
As shown in fig. 1-3, the embodiment provides a high-transmittance black-and-white screen 3D printer, which comprises a fixing frame, a Z-axis moving mechanism, a construction platform plate, a photosensitive resin groove, a black-and-white liquid crystal screen, an optical conversion lens and an LED light source. The Z-axis moving mechanism and the photosensitive resin tank are respectively arranged on the fixing frame, the bottom of the Z-axis moving mechanism is connected with the construction platform plate, the construction platform plate is positioned above the photosensitive resin tank, the black-white liquid crystal screen is arranged below the photosensitive resin tank, and the optical conversion lens is arranged above the LED light source.
The optical conversion lens is a hemispherical lens, a lens base is arranged at the bottom of the hemispherical lens, the lens base is hollow, and the lens base is positioned on the LED light source. After the LED light source emits light, the hemispherical lens can convert oblique light rays emitted by the LED light source into ultraviolet light rays which are integrated in energy and relatively uniform.
The ultraviolet light with integrated energy and relatively uniform 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 refers to ultraviolet light transmittance. The black-white liquid crystal screen has no color filter sheet in each pixel point, and can allow the purple light to directly pass through. Compared with the conventional RGB color screen, the black-and-white liquid crystal screen in the embodiment has the advantage that the transmittance 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-white liquid crystal screen can be greatly reduced, and the service life of the black-white liquid crystal screen is prolonged. The power of the whole machine can be reduced, and under the same scheme, compared with an RGB color screen, the power of the whole machine can be reduced by 1/3.
The conventional scheme adopts a front-mounted chip LED, and the LED light source in this embodiment is a flip-chip LED. The flip chip LED is applied to 3D printing, and has the obvious effects that the chips can be densely arranged, the same size is achieved, more chips can be arranged in a flip way, and the characteristic of light concentration of small-size and large-current is achieved. In addition, the flip chip is better in heat dissipation performance by directly contacting with the substrate, a heat sink and a heat dissipation fan are not needed, and in 3D printing, the cost is reduced and the assembly efficiency is greatly improved.
As shown in fig. 2, in this embodiment, a light shield is further provided, the black-and-white liquid crystal screen is located at the top of the light shield, and the optical conversion lens and the LED light source are located in the light shield. The light shield can shield and absorb redundant ultraviolet rays and prevent the rays from irradiating outside.
The specific working procedure of 3d printing as in fig. 1 and 2 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 onto a black-white liquid crystal screen through conversion of the optical conversion lens.
2. The ultraviolet light through optical conversion passes through the black-and-white liquid crystal screen.
3. A photosensitive resin tank is arranged above the black-white liquid crystal screen, and liquid photosensitive resin is filled in the photosensitive resin tank.
4. The black-and-white liquid crystal screen displays a desired pattern under the control of the driving plate.
5. The pattern displayed by the black-and-white liquid crystal screen is irradiated by the ultraviolet light through optical conversion, and the ultraviolet light passes through the black-and-white liquid crystal screen and photosensitive resin in the trough to undergo 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 solidified resin is positioned on the construction platform plate.
7. The black-white liquid crystal screen continuously displays the required shape under the action of the driving plate, and meanwhile, the Z axis moves up and down to drive the construction platform plate to move up and down, so that the resin is solidified layer by layer on the construction platform plate, and the required three-dimensional product is printed out repeatedly.
By adopting the technical schemes, the LED light source adopts the black-and-white liquid crystal screen to transmit light, the divergent light of the LED light source is converted into the ultraviolet light which is integrated in energy and relatively uniform through the optical conversion lens, and the LED light source adopts the flip-chip LED, so that the heat dissipation performance of the light source and the black-and-white liquid crystal screen in the whole scheme is very good. The reflection 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-and-white liquid crystal screen is 3-4 times that of the RGB color screen, the same model can save 3-4 times of time when being used for printing, the printing speed can be greatly improved, and the printing precision is improved.
The foregoing description of the preferred embodiment of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (3)
1. The utility model provides a high printing opacity black and white screen 3D printer, includes mount, Z axle moving mechanism, builds platform board, photosensitive resin groove, Z axle moving mechanism, photosensitive resin groove are located on the mount respectively, the connection of Z axle moving mechanism bottom builds the platform board, it is located photosensitive resin groove top to build the platform board, its characterized in that still includes black and white LCD screen, optical conversion lens, LED light source, black and white LCD screen locates photosensitive resin groove below, optical conversion lens locates the LED light source top;
the LED light source is a densely arranged flip chip LED, the hemispherical lens converts oblique light rays emitted by the LED light source into ultraviolet light rays with integrated and uniform energy, the flip chip is directly contacted with a substrate, the heat dissipation performance is good, and a radiating fin and a radiating fan are not needed in 3D printing.
2. The high light transmission black and white screen 3D printer of claim 1, wherein the hemispherical lens bottom is provided with a lens base, the lens base is hollow, and the lens base is positioned on the LED light source.
3. The high light transmission black and white screen 3D printer of claim 1, further comprising a light shield, wherein the black and white liquid crystal screen is positioned on top of the light shield, and wherein 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 CN111531877B (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 CN111531877B (en) | 2020-06-09 | 2020-06-09 | High printing opacity black and white screen 3D printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111531877A CN111531877A (en) | 2020-08-14 |
| CN111531877B true CN111531877B (en) | 2025-09-16 |
Family
ID=71972710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010517806.3A Active CN111531877B (en) | 2020-06-09 | 2020-06-09 | High printing opacity black and white screen 3D printer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111531877B (en) |
| WO (1) | WO2021248689A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111531877B (en) * | 2020-06-09 | 2025-09-16 | 深圳市智能派科技有限公司 | High printing opacity 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 |
| CN114536749B (en) * | 2022-01-28 | 2023-10-27 | 华南理工大学 | Real-time calculation method for dynamic backlight distribution of LCD light-curing 3D printer |
| CN114939985A (en) * | 2022-06-22 | 2022-08-26 | 深圳安轮光学有限公司 | Be applied to combination optical lens of 3D printer |
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| CN106915078A (en) * | 2017-03-14 | 2017-07-04 | 北京金达雷科技有限公司 | Optical path component, resin pool and 3D printer for photocuring 3D printer |
| CN107342353A (en) * | 2017-06-06 | 2017-11-10 | 佛山市香港科技大学Led-Fpd工程技术研究开发中心 | One kind focuses on ultraviolet LED encapsulating structure and preparation method thereof |
| 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 |
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| CN212603427U (en) * | 2020-06-09 | 2021-02-26 | 深圳市智能派科技有限公司 | High printing opacity black and white screen 3D printer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107428076B (en) * | 2015-04-28 | 2020-02-11 | 北京金达雷科技有限公司 | Photocuring 3D printer and 3D printing method |
| CN108735881A (en) * | 2017-04-21 | 2018-11-02 | 上海威廉照明电气有限公司 | Light-emitting device and its manufacturing method |
| CN207916049U (en) * | 2017-12-21 | 2018-09-28 | 东莞市三维三打印科技有限公司 | 3D printer based on LCD light source |
| CN208343459U (en) * | 2018-06-21 | 2019-01-08 | 中南大学 | A kind of rapid photocuring LCD 3D printer |
| EP3814117A4 (en) * | 2018-06-29 | 2022-09-21 | 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 large-scale micro-nano processing and additive manufacturing equipment |
| CN110126272A (en) * | 2019-05-21 | 2019-08-16 | 广东石油化工学院 | A kind of photocuring 3D printer |
| 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 |
| CN111531877B (en) * | 2020-06-09 | 2025-09-16 | 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/CN111531877B/en active Active
- 2020-08-20 WO PCT/CN2020/110126 patent/WO2021248689A1/en not_active Ceased
Patent Citations (5)
| 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 |
| CN106915078A (en) * | 2017-03-14 | 2017-07-04 | 北京金达雷科技有限公司 | Optical path component, resin pool and 3D printer for photocuring 3D printer |
| CN107342353A (en) * | 2017-06-06 | 2017-11-10 | 佛山市香港科技大学Led-Fpd工程技术研究开发中心 | One kind focuses on ultraviolet LED encapsulating structure and preparation method thereof |
| CN110625930A (en) * | 2018-06-21 | 2019-12-31 | 中南大学 | A fast photocuring LCD 3D printer |
| CN212603427U (en) * | 2020-06-09 | 2021-02-26 | 深圳市智能派科技有限公司 | High printing opacity black and white screen 3D printer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021248689A1 (en) | 2021-12-16 |
| CN111531877A (en) | 2020-08-14 |
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