CN113696475A - Compact photocuring 3D printer - Google Patents
Compact photocuring 3D printer Download PDFInfo
- Publication number
- CN113696475A CN113696475A CN202110914442.7A CN202110914442A CN113696475A CN 113696475 A CN113696475 A CN 113696475A CN 202110914442 A CN202110914442 A CN 202110914442A CN 113696475 A CN113696475 A CN 113696475A
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- Prior art keywords
- printer
- working
- compact
- plate
- photocuring
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- 238000000016 photochemical curing Methods 0.000 title claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 39
- 229920005989 resin Polymers 0.000 claims abstract description 39
- 230000017525 heat dissipation Effects 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000007493 shaping process Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 70
- 230000001681 protective effect Effects 0.000 claims description 16
- 230000005855 radiation Effects 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 241001233242 Lontra Species 0.000 description 3
- 238000001723 curing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- B29C64/20—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
- B29C64/10—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
- B29C64/30—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
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
Abstract
The invention provides a compact photocuring 3D printer, relates to the field of photocuring 3D printers, and aims to solve the problems that a heat dissipation device and a driving power supply device of the existing photocuring 3D printer are exposed on a working platform, so that the actual working space is occupied, and the production and processing cost is increased. Including work machine case, working plate, shaping platform and resin cistern, the work machine case is the cavity setting, the working plate passes through fastener fixed connection on the work machine case, and heat abstractor, power supply unit and driving motor overall structure installation set up in the inside of work machine case, and the whole operating temperature of printer is in stable state when guaranteeing high-efficient function, prolongs the life of printer, optimizes the working space of complete machine, avoids unnecessary work mechanism to occupy important working space, compares the structure of conventional printer and optimizes greatly, realizes the complete machine structural optimization under the normal operating, reduces the cost of construction of enterprise.
Description
Technical Field
The invention relates to the field of photocuring 3D printers, in particular to a compact photocuring 3D printer.
Background
The structure of the photocuring 3D printer generally comprises a platform lifting mechanism, a forming platform, a resin tank, a display screen, a light source and the like, wherein the light source penetrates through the display screen to form a transmission area to be cured at the bottom of the resin tank, and liquid resin positioned on the forming surface of the forming platform or between the bottom of a cured layer and the bottom of the resin tank is cured and formed in the transmission area. In the process of layer-by-layer forming of three-dimensional objects, the first-formed cured layer needs to be reliably adhered to the forming surface of the forming platform, which requires that the forming platform needs to be precisely adjusted before printing is started so that the forming surface of the forming platform is parallel to and at a proper distance from the bottom surface of the resin tank. In addition, after each layer of solidification is finished, the forming platform can be driven by the platform lifting mechanism to lift in the resin tank, so that the solidified layer is separated from the bottom surface of the resin tank, meanwhile, the height of the next layer of resin layer formed by pre-solidification is reserved between the solidified layer and the bottom surface of the resin tank, so that liquid resin can be filled into a gap between the solidified layer and the bottom of the resin tank, preparation is made for next layer solidification, and in order to enable a printed object to obtain better surface forming quality, the height positioning of each layer of solidified layer needs to ensure higher precision.
The heat dissipation device and the driving power supply device of the existing photocuring 3D printer are exposed on the working platform, so that the actual working space is occupied, the production and processing cost is increased, and the occupied area of the whole machine is large.
Disclosure of Invention
The invention provides a compact photocuring 3D printer, and aims to solve the problems that a heat dissipation device and a driving power supply device of the photocuring 3D printer in the prior art are exposed on a working platform, occupy actual working space and increase production and processing cost.
In order to solve the technical problems, the invention provides a compact photocuring 3D printer, which comprises a working case, a working plate, a forming platform and a resin liquid tank, wherein the working case is hollow, the working plate is fixedly connected to the working case through a fastener, the resin liquid tank is arranged on the working plate, the forming platform is arranged above the resin liquid tank, the forming platform is connected with the working case through a driving mechanism, a liquid supply device is arranged on the working plate, a heat dissipation device is arranged below the resin liquid tank, a power supply device is arranged below the heat dissipation device, a protective cover is arranged above the working case, the driving mechanism comprises a sliding frame, the sliding frame is fixedly connected to the working plate through a fastener, and an adjusting screw rod is arranged in the sliding frame in a penetrating manner, accommodate the lead screw with connect through the connecting block between the shaping platform, the bottom of adjusting the lead screw is provided with driving motor, heat abstractor is including the heat-conducting plate, the below of heat-conducting plate is provided with the fin, the right side of fin is provided with radiator fan, power supply unit is including power module, power module's right side is provided with power supply, the protection casing can dismantle the connection on the working plate through the fastener.
Preferably, the sliding frame is provided with a limiting plate, the connecting block and the adjusting screw are arranged in a sliding mode, and the connecting block is fixedly connected to the forming platform through a fastening piece.
Preferably, the liquid supply device comprises a liquid supply box, a liquid pump is arranged on the liquid supply box, the liquid pump is connected with the liquid supply box through a liquid pumping pipe, and the liquid pump is connected with the resin liquid tank through a liquid sending pipe.
Preferably, the heat conducting plate is fixedly connected to the bottom of the resin liquid tank through a fastening piece, and the heat radiating fan is fixedly connected to the right side of the heat radiating fin through a fastening piece.
Preferably, the bottom of work machine case is provided with the backup pad, power module passes through fastener fixed connection in the backup pad, the last heat dissipation otter board that is provided with of power module, the transversal L type setting of personally submitting of heat dissipation otter board, the heat dissipation otter board is formed by the processing of copper product.
Preferably, a data display screen is arranged on the working case, a control button is arranged on the right side of the data display screen, and the driving motor is fixedly connected to the inner wall of the working case through a fastener.
Preferably, the both sides of working plate are provided with the deflector, the deflector with slidable between the safety cover, the both sides of safety cover are provided with the installation handle.
Preferably, a power socket is further installed on the work machine case, and the power socket is communicated with the power supply.
The invention has the following beneficial effects:
(1) the heat dissipation device, the power supply device and the driving motor are integrally arranged inside the working case, so that the integral operation temperature of the printer is in a stable state while high-efficiency operation is guaranteed, the service life of the printer is prolonged, the working space of the whole machine is optimized, unnecessary working mechanisms are prevented from occupying important working space, the structure of the whole machine is greatly optimized compared with that of a conventional printer, the structure optimization of the whole machine under normal operation is realized, and the cost of an enterprise is reduced;
(2) according to the invention, through the arrangement of the protective cover, the printed model is ensured to have good surface quality, foreign matters are prevented from entering the printer, the heat generated during working can be dissipated timely by arranging the heat dissipation screen plate above the power supply module, and a worker holds the mounting handle to drive the whole protective cover to move above the working plate.
(3) The guide plate is arranged, so that the protective cover can be quickly and efficiently installed, workers can timely adjust the protective cover according to real-time data on the data display screen, the whole printing and forming work is controllable, and the fault rate of the printer is reduced.
Drawings
FIG. 1 is an overall view of a compact, light-cured 3D printer according to the present invention;
FIG. 2 is a schematic view of a compact, light-curing 3D printer according to the present invention without a protective cover installed;
FIG. 3 is a side view of a compact, light-curing 3D printer according to the present invention;
FIG. 4 is an exploded view of a compact, light-curing 3D printer according to the present invention;
wherein, 1, the working machine box; 2. a working plate; 3. a forming platform; 4. a resin liquid tank; 5. a drive mechanism; 501. a slide frame; 502. adjusting the screw rod; 503. connecting blocks; 504. a drive motor; 505. a limiting plate; 6. a liquid supply device; 601. a liquid supply tank; 602. a liquid pump; 603. a liquid pumping pipe; 604. a liquid delivery pipe; 7. a heat sink; 701. a heat conducting plate; 702. a heat sink; 703. a heat radiation fan; 8. a power supply device; 801. a power supply; 802. a power supply module; 803. a support plate; 804. a heat dissipation screen plate; 9. a data display screen; 901. a control button; 10. a guide plate; 1001. installing a handle; 11. a power outlet; 12. a protective cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments.
As shown in fig. 1-4, the present invention provides a compact photocuring 3D printer, which comprises a working cabinet 1, a working plate 2, a forming platform 3 and a resin liquid tank 4, wherein the working cabinet 1 is hollow, the working plate 2 is fixedly connected to the working cabinet 1 through a fastener, the resin liquid tank 4 is installed on the working plate 2, the forming platform 3 is arranged above the resin liquid tank 4, the forming platform 3 is connected to the working cabinet 1 through a driving mechanism 5, the driving mechanism 5 is used for controlling the sliding of the forming platform 3, a liquid supply device 6 is installed on the working plate 2, the liquid supply device 6 is used for supplying a forming resin liquid into the resin liquid tank 4, a heat dissipation device 7 is arranged below the resin liquid tank 4, the heat dissipation device 7 is used for dissipating heat from the resin liquid tank 4, and a power supply device 8 is arranged below the heat dissipation device 7, power supply unit 8 is used for the supply of whole printer, the top of work machine case 1 is provided with protection casing 12, actuating mechanism 5 is including sliding frame 501, sliding frame 501 passes through fastener fixed connection on working plate 2, wear to be equipped with accommodate the lead screw 502 in the sliding frame 501, accommodate the lead screw 502 with connect through connecting block 503 between the shaping platform 3, accommodate the bottom of lead screw and be provided with driving motor 504, heat abstractor 7 is including heat-conducting plate 701, the below of heat-conducting plate 701 is provided with fin 702, the right side of fin 702 is provided with radiator fan 703, power supply unit 8 is including power module 802, power module 802's right side is provided with power supply 801, the protection casing passes through the fastener can dismantle the connection on working plate 2.
Further, a limiting plate 505 is arranged on the sliding frame 501, the connecting block 503 and the adjusting screw are slidably arranged, and the connecting block 503 is fixedly connected to the forming platform 3 through a fastener.
Further, the liquid supply device 6 includes a liquid supply tank 601, a liquid suction pump 602 is provided on the liquid supply tank 601, the liquid suction pump 602 is connected to the liquid supply tank 601 through a liquid suction pipe 603, and the liquid suction pump 602 is connected to the resin liquid tank 4 through a liquid supply pipe 604.
Further, the heat conductive plate 701 is fixedly attached to the bottom of the resin liquid tank 4 by a fastening member, and the heat radiation fan 703 is fixedly attached to the right side of the heat radiation fin 702 by a fastening member.
Further, a supporting plate 803 is arranged at the bottom of the working case 1, the power supply module 802 is fixedly connected to the supporting plate 803 through a fastener, a heat dissipation screen 804 is arranged on the power supply module 802, the heat dissipation screen 804 can dissipate heat generated by the power supply module 802 timely, the cross section of the heat dissipation screen 804 is in an L-shaped arrangement, and the heat dissipation screen 804 is made of copper materials.
Further, a data display screen 9 is arranged on the work machine case 1, a control button 901 is arranged on the right side of the data display screen 9, and the driving motor 504 is fixedly connected to the inner wall of the work machine case 1 through a fastener.
Further, guide plates 10 are disposed on both sides of the working plate 2, the guide plates 10 and the protective cover 12 are slidable with each other, and mounting handles 1001 are disposed on both sides of the protective cover 12.
Further, a power socket 11 is further installed on the work machine box 1, and the power socket 11 is communicated with the power supply 801.
The working principle of the compact photocuring 3D printer is as follows: the liquid pump 602 in the liquid supply device 6 starts to work, the resin liquid in the liquid supply tank 601 is pumped out through the liquid pumping pipe 603, and then the resin liquid is conveyed into the resin liquid tank 4 through the liquid conveying pipe 604, at this time, the driving motor 504 starts to operate, the driving motor 504 drives the adjusting screw to rotate, the connecting block 503 and the adjusting screw are slidably arranged, the connecting block 503 slides on the adjusting screw while the adjusting screw rotates, the forming platform 3 is fixedly connected to the connecting block 503 through a fastener, the forming platform 3 is driven to descend through the connecting block 503 until the forming platform 3 reaches the resin liquid tank 4, the printing and forming work is started, the driving motor 504 is always in a working state during the printing and forming process, the connecting block 503 is driven to slide on the adjusting screw to drive the forming platform 3 to move up in a stepping mode until the printing and forming work is completed, heat generated by the resin liquid tank 4 during the printing and forming process is timely transferred to the heat conducting plate 701 in the heat dissipation device 7, the heat conducting plate 701 transfers heat to the radiating fin 702, at this time, the radiating fan 703 starts to work, the heat on the radiating fin 702 is timely radiated through the work of the radiating fan 703, the power supply 801 is electrically connected with the power supply module 802, and the power supply work of the whole printer is completed through the mutual matching of the power supply 801 and the power supply module 802; the heat dissipation screen 804 is arranged above the power supply module 802, so that heat generated during work can be dissipated in time, and a worker holds the installation handle 1001 to drive the whole protective cover 12 to move above the working plate 2; the arrangement of the guide plate 10 is beneficial to the rapid and efficient installation of the protective cover 12; the heat dissipation device 7, the power supply device 8 and the driving motor 504 are integrally arranged inside the working case 1, the integral operation temperature of the printer is in a stable state while high-efficiency operation is guaranteed, the service life of the printer is prolonged, the working space of the whole machine is optimized, unnecessary working mechanisms are prevented from occupying important working space, the structure of the printer is greatly optimized compared with that of a conventional printer, the structure of the whole machine under normal operation is optimized, the manufacturing cost of an enterprise is reduced, the surface quality of a printed model is guaranteed to be good through the arrangement of the protective cover 12, and foreign matters are prevented from entering the printer; the staff can in time make the adjustment according to the real-time data on the data display screen 9, and the whole shaping work of printing is controllable, reduces the printer fault rate.
In conclusion, the heat dissipation device, the power supply device and the driving motor are integrally arranged inside the working case, so that the whole operation temperature of the printer is in a stable state while high-efficiency operation is guaranteed, the service life of the printer is prolonged, the working space of the whole printer is optimized, unnecessary working mechanisms are prevented from occupying important working space, the structure of the whole printer is greatly optimized compared with that of a conventional printer, the structure of the whole printer under normal operation is optimized, the manufacturing cost of an enterprise is reduced, the good surface quality of a printed model is guaranteed through the arrangement of the protective cover, and foreign matters are prevented from entering the inside of the printer.
It should be noted that various standard components used in the present invention are commercially available, non-standard components are specially customized, and the connection manner adopted in the present invention, such as bolting, welding, etc., is also a very common means in the mechanical field, and the inventor does not need to describe herein any further.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. A compact photocuring 3D printer comprises a working case (1), a working plate (2), a forming platform (3) and a resin liquid tank (4), and is characterized in that the working case (1) is arranged in a hollow mode, the working plate (2) is fixedly connected onto the working case (1) through a fastener, the resin liquid tank (4) is arranged on the working plate (2), the forming platform (3) is arranged above the resin liquid tank (4), the forming platform (3) is connected with the working case (1) through a driving mechanism (5), a liquid supply device (6) is arranged on the working plate (2), a heat dissipation device (7) is arranged below the resin liquid tank (4), a power supply device (8) is arranged below the heat dissipation device (7), a protective cover (12) is arranged above the working case (1), actuating mechanism (5) is including sliding frame (501), sliding frame (501) passes through fastener fixed connection on working plate (2), wear to be equipped with accommodate the lead screw (502) in sliding frame (501), accommodate the lead screw (502) with connect through connecting block (503) between shaping platform (3), the bottom of adjusting the lead screw is provided with driving motor (504), heat abstractor (7) are including heat-conducting plate (701), the below of heat-conducting plate (701) is provided with fin (702), the right side of fin (702) is provided with radiator fan (703), power supply unit (8) are including power module (802), the right side of power module (802) is provided with power supply (801), the protection casing can dismantle through the fastener and connect on working plate (2).
2. The compact photocuring 3D printer of claim 1, wherein the sliding frame (501) is provided with a limiting plate (505), the connecting block (503) is slidably arranged with the adjusting screw, and the connecting block (503) is fixedly connected to the forming platform (3) through a fastener.
3. The compact 3D printer according to claim 1, wherein the liquid supply device (6) comprises a liquid supply tank (601), a liquid pump (602) is disposed on the liquid supply tank (601), the liquid pump (602) is connected to the liquid supply tank (601) through a liquid pumping pipe (603), and the liquid pump (602) is connected to the resin liquid tank (4) through a liquid feeding pipe (604).
4. The compact 3D printer according to claim 1, wherein the heat conductive plate (701) is fixedly attached to the bottom of the resin liquid tank (4) by a fastening member, and the heat radiation fan (703) is fixedly attached to the right side of the heat radiation fin (702) by a fastening member.
5. The compact photocuring 3D printer of claim 1, wherein a support plate (803) is disposed at the bottom of the working cabinet (1), the power supply module (802) is fixedly connected to the support plate (803) through a fastener, a heat dissipation screen (804) is disposed on the power supply module (802), the cross section of the heat dissipation screen (804) is disposed in an L shape, and the heat dissipation screen (804) is made of copper.
6. The compact photocuring 3D printer of claim 1, wherein a data display screen (9) is disposed on the work cabinet (1), a control button (901) is disposed on the right side of the data display screen (9), and the driving motor (504) is fixedly connected to the inner wall of the work cabinet (1) through a fastener.
7. The compact, photocuring 3D printer of claim 1, wherein the work plate (2) is provided with guide plates (10) on both sides, the guide plates (10) being slidable with the protective cover (12), the protective cover (12) being provided with mounting handles (1001) on both sides.
8. The compact 3D printer according to claim 1, wherein a power socket (11) is further installed on the working cabinet (1), and the power socket (11) is connected to the power supply (801).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110914442.7A CN113696475A (en) | 2021-08-10 | 2021-08-10 | Compact photocuring 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110914442.7A CN113696475A (en) | 2021-08-10 | 2021-08-10 | Compact photocuring 3D printer |
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| Publication Number | Publication Date |
|---|---|
| CN113696475A true CN113696475A (en) | 2021-11-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110914442.7A Pending CN113696475A (en) | 2021-08-10 | 2021-08-10 | Compact photocuring 3D printer |
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| CN (1) | CN113696475A (en) |
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| CN111546631A (en) * | 2020-07-01 | 2020-08-18 | 深圳市深华科科技有限公司 | Photocuring 3D printer |
| CN213082370U (en) * | 2020-08-21 | 2021-04-30 | 大连盛源义齿有限公司 | Resin printer for false tooth processing |
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Application publication date: 20211126 |