CN114161709A - Turnover type printing platform mechanism for 3D printer - Google Patents
Turnover type printing platform mechanism for 3D printer Download PDFInfo
- Publication number
- CN114161709A CN114161709A CN202111519556.8A CN202111519556A CN114161709A CN 114161709 A CN114161709 A CN 114161709A CN 202111519556 A CN202111519556 A CN 202111519556A CN 114161709 A CN114161709 A CN 114161709A
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- gear
- printing
- plate
- platform mechanism
- printer
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- 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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- 238000007639 printing Methods 0.000 title claims abstract description 73
- 230000007246 mechanism Effects 0.000 title claims abstract description 16
- 230000007306 turnover Effects 0.000 title claims abstract description 13
- 239000000428 dust Substances 0.000 claims description 41
- 230000001681 protective effect Effects 0.000 claims description 11
- 238000013016 damping Methods 0.000 claims description 10
- 238000010146 3D printing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012255 powdered metal Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007858 starting material Substances 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
- B29C64/245—Platforms or substrates
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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
- B29C64/227—Driving means
- B29C64/241—Driving means for rotary motion
-
- 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
- B29C64/35—Cleaning
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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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses a turnover printing platform mechanism for a 3D printer, and particularly relates to the technical field of 3D printing. The motor drives the first gear to enable the second gear to drive the hollow gear to rotate, and the fixed gear drives the fixed block to start rotating; the invention can rotate the second printing plate after the first printing plate finishes printing, so that the printing can be continued, and the printing time is reduced.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a turnover type printing platform mechanism for a 3D printer.
Background
The 3D printer, also known as a three-dimensional printer 3DP, is an accumulative manufacturing technique, i.e. a machine of a rapid prototyping technique, which is based on a digital model file, and manufactures a three-dimensional object by printing a layer of adhesive material by using a special wax material, a powdered metal or plastic, etc. as an adhesive material.
At present, only one printing platform is arranged in the existing 3D printer, when a three-dimensional object needs to be printed for multiple times, the printing platform needs to be replaced for a long time, and the printing time is wasted.
Disclosure of Invention
In order to overcome the above defects in the prior art, embodiments of the present invention provide a convertible printing platform mechanism for a 3D printer, which enables a first printing plate to be turned down and a second printing plate to be turned up through a motor in 3D printing, so as to reduce printing time, thereby solving the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: comprises a supporting frame, a printer is arranged at the top of the supporting frame, a sliding rod is fixedly arranged at one side of the supporting frame, the inner wall of the slide bar is connected with a support plate in a sliding way, one side of the support plate is fixedly provided with a motor, the output end of the motor is fixedly provided with a first gear, the top of the supporting plate is in threaded connection with a threaded rod, a second gear is fixedly arranged on the inner wall of the threaded rod, the first gear and the second gear are arranged in a meshed state, one side of the supporting plate is rotatably connected with a rotating rod, the inner wall of the rotating rod is fixedly provided with a hollow gear, a fixed gear is fixedly arranged on one side of the rotating rod, a fixed block is fixedly arranged on one side of the fixed gear, a gear slot hole is formed in the fixed block, one side fixed mounting of fixed block has first printing plate, the bottom fixed mounting of fixed block has the second printing plate.
Through adopting above-mentioned technical scheme, the starter motor, make meeting of motor drive first gear and begin to rotate, first gear drives the second gear and begins to rotate, and then the threaded rod can drive the backup pad and begin the rebound, the second gear can drive hollow gear and begin to rotate when the pivoted, make the bull stick can drive the fixed gear and begin to rotate, the notch meshing of fixed gear and fixed block, make the fixed block drive first printing plate and second printing plate and begin to rotate, and then can change down the first printing plate of printing completion, change over the second printing plate, thereby reduce the print time.
In a preferred embodiment, one side of the first printing plate is fixedly provided with a dust collecting plate, a notch is formed in the dust collecting plate, a dust collecting barrel is fixedly arranged inside the notch of the dust collecting plate, and one side of the dust collecting barrel is movably clamped with a suction fan.
Through adopting above-mentioned technical scheme, at first printing plate start pivoted in-process, can utilize the principle that the object glided for the residue landing of printing is to the board of gathering dust, and inside rethread suction fan will print the residue and inhale the dust collection bucket.
In a preferred embodiment, one side of the dust collection barrel is hinged with a dust collection door, and one side of the dust collection door is fixedly provided with a switch handle.
Through adopting above-mentioned technical scheme, when the printing residue is cleared up to needs, pulling switch spanner can open the door that gathers dust of dust collection bucket, carries out the clearance to the printing residue.
In a preferred embodiment, four damping springs are fixedly mounted at the bottom of the dust collecting plate, and the four damping springs are arranged around the first printing plate.
Through adopting above-mentioned technical scheme, when the printer began to print, damping spring can carry out the shock attenuation to first printing plate.
In a preferred embodiment, the inner wall of the sliding rod is provided with a protective cover, and the protective cover is arranged in a telescopic state.
Through adopting above-mentioned technical scheme, the protection casing can protect the slide bar, adopts the state that can stretch out and draw back and can not influence the backup pad and slide on the slide bar.
In a preferred embodiment, the slide bars and the protective covers are arranged in a plurality of groups, the plurality of groups of slide bars and protective covers are arranged in an axisymmetric state with respect to a horizontal center line of the threaded rod, the two support plates are arranged in an axisymmetric state with respect to a horizontal center line of the first printing plate.
By adopting the technical scheme, the two supporting plates can be used for ensuring that the supporting plates keep balance in the process of starting to rotate the first printing plate, and the multiple groups of sliding rods can ensure that the supporting plates keep balance in the process of moving upwards.
In a preferred embodiment, the bottom end of the sliding rod is provided with a limiting ring, and a limiting plate is fixedly mounted on the inner wall of the sliding rod.
Through adopting above-mentioned technical scheme, the spacing collar can be spacing at the slide bar in the in-process of gliding downwards.
In a preferred embodiment, a connecting plate is connected to the top end of the threaded rod in a threaded manner, and the connecting plate is arranged in a fixed state with the support frame.
Through adopting above-mentioned technical scheme, the connecting plate can carry on spacingly to the threaded rod, makes things convenient for the threaded rod to reciprocate.
The invention has the technical effects and advantages that:
1. according to the turnover type printing platform mechanism for the 3D printer, the first gear is driven by the motor to drive the second gear, so that the second gear drives the hollow gear to start rotating, and the fixed gear drives the fixed block to drive the first printing plate and the second printing plate to rotate;
2. this convertible print platform mechanism for 3D printer begins the pivoted in-process after first printing plate is printed and is accomplished, and it can the landing to print the residue on the board that gathers dust for it can be inhaled by the suction fan and to receive the dirt bucket inside to print the residue, realizes the purpose of automatic clearance residue.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1 in accordance with the present invention;
fig. 3 is a partial structural cross-sectional view of the present invention.
The reference signs are: 1. a support frame; 2. a slide bar; 3. a support plate; 4. a motor; 5. a first gear; 6. a threaded rod; 7. a second gear; 8. a rotating rod; 9. a hollow gear; 10. fixing a gear; 11. a fixed block; 12. a first printing plate; 13. a dust collecting plate; 14. a dust collection barrel; 15. a suction fan; 16. a dust collection door; 17. a switch handle; 18. a damping spring; 19. a protective cover; 20. a limiting ring; 21. a limiting plate; 22. a connecting plate; 23. a printer; 24. a second printing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings 1-2 of the specification, the turnover printing platform mechanism for the 3D printer comprises a support frame 1, a printer 23 is arranged at the top of the support frame 1, a slide bar 2 is fixedly arranged at one side of the support frame 1, a support plate 3 is slidably connected to the inner wall of the slide bar 2, a motor 4 is fixedly arranged at one side of the support plate 3, a first gear 5 is fixedly arranged at the output end of the motor 4, a threaded rod 6 is connected to the top of the support plate 3 in a threaded manner, a second gear 7 is fixedly arranged on the inner wall of the threaded rod 6, the first gear 5 and the second gear 7 are arranged in a meshed state, a rotating rod 8 is rotatably connected to one side of the support plate 3, a hollow gear 9 is fixedly arranged on the inner wall of the rotating rod 8, a fixed gear 10 is fixedly arranged at one side of the rotating rod 8, a fixed block 11 is fixedly arranged at one side of the fixed gear 10, and a gear groove hole is formed in the fixed block 11, one side of the fixed block 11 is fixedly provided with a first printing plate 12, the bottom of the fixed block 11 is fixedly provided with a second printing plate 24, the motor 4 is started, the motor 4 is a TE290S-2 series three-phase asynchronous motor device, the motor 4 can drive the first gear 5 to rotate, the first gear 5 can drive the second gear 7 to rotate, so that the threaded rod 6 can drive the support plate 3 to move upwards, the second gear 7 can drive the hollow gear 9 to rotate simultaneously, the rotating rod 8 can drive the fixed gear 10 to rotate, the fixed gear 10 is meshed with a notch of the fixed block 11, so that the fixed block 11 can drive the first printing plate 12 and the second printing plate 24 to rotate, the first printing plate 12 which is printed can be rotated downwards, the second printing plate 24 can be rotated upwards, the printing time can be reduced, the sliding rod 2 and the protective cover 19 are arranged into a plurality of groups, the horizontal central line that multiunit slide bar 2 and protection casing 19 are about threaded rod 6 is the symmetry axis, it sets up to be the axisymmetric state, backup pad 3 is provided with two, two backup pads 3 are the symmetry axis about the horizontal central line of first printing plate 12, it sets up to be the axisymmetric state, adopt two backup pads 3 can guarantee to start pivoted in-process at first printing plate 12 to keep balance, multiunit slide bar 2 can guarantee backup pad 3 at the in-process of rebound keep balance, the bottom of slide bar 2 is equipped with spacing collar 20, the inner wall fixed mounting of slide bar 2 has limiting plate 21, spacing collar 20 can be spacing at slide bar 2 at the in-process of gliding downwards, the top threaded connection of threaded rod 6 has connecting plate 22, connecting plate 22 is the fixed state setting with support frame 1, connecting plate 22 can carry on spacingly at the in-process of rebound to threaded rod 6, make things convenient for threaded rod 6 to reciprocate.
It should be noted that, after the first printing plate 12 finishes printing, the motor 4 is started, so that the output end of the motor 4 can drive the first gear 5 to start rotating, the first gear 5 drives the second gear 7 engaged with the first gear 5 to start rotating, so that the threads rotate, thereby driving the supporting plate 3 to start moving upwards, the second gear 7 drives the hollow gear 9 to rotate in the rotating process, the fixed gear 10 can be driven to start rotating under the action of the hollow gear 9, the fixed block 11 is provided with a notch, the fixed gear 10 is engaged with the notch of the fixed block 11, thereby driving the first printing plate 12 to rotate, thereby turning the second printing plate 24 upwards, and achieving the purpose of reducing printing time
Referring to the attached drawings 1-3 in the specification, a dust collecting plate 13 is fixedly mounted on one side of a first printing plate 12, a notch is formed in the dust collecting plate 13, a dust collecting barrel 14 is fixedly mounted inside the notch of the dust collecting plate 13, a suction fan 15 is movably clamped on one side of the dust collecting barrel 14, the first printing plate 12 can utilize the principle that an object can slide downwards in the process of starting to rotate, so that printed residues can slide onto the dust collecting plate 13, the printed residues are sucked into the dust collecting barrel 14 through the suction fan 15, a dust collecting door 16 is hinged to one side of the dust collecting barrel 14, a switch handle 17 is fixedly mounted on one side of the dust collecting door 16, and when the printed residues need to be cleaned, the switch wrench is pulled to open the dust collecting door 16 of the dust collecting barrel 14, so that the printed residues can be cleaned.
It should be noted that, when the first printing plate 12 starts to rotate after printing is completed, the printed residues can slide onto the dust collecting plate 13, the residues are sucked into the recycling bin by the suction force of the suction fan 15, and when the printed residues need to be cleaned, the dust collecting door 16 can be opened by pulling the switch handle 17, so that the printed residues can be cleaned conveniently.
Referring to the attached drawing 1 in the specification, the bottom of the dust collecting plate 13 is fixedly provided with four damping springs 18, the four damping springs 18 are arranged around the first printing plate 12, when a printer 23 starts printing, the damping springs 18 can damp the first printing plate 12, the inner wall of the sliding rod 2 is provided with a protective cover 19, the protective cover 19 is arranged in a telescopic state, the protective cover 19 can protect the sliding rod 2, and the sliding of the support plate 3 on the sliding rod 2 is not influenced by the telescopic state.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. The utility model provides a 3D is convertible print platform mechanism for printer, includes support frame (1), its characterized in that: the printer is characterized in that a printer (23) is arranged at the top of the support frame (1), a slide rod (2) is fixedly arranged on one side of the support frame (1), a support plate (3) is slidably connected to the inner wall of the slide rod (2), a motor (4) is fixedly arranged on one side of the support plate (3), a first gear (5) is fixedly arranged at the output end of the motor (4), a threaded rod (6) is connected to the top of the support plate (3) in a threaded manner, a second gear (7) is fixedly arranged on the inner wall of the threaded rod (6), the first gear (5) and the second gear (7) are arranged in a meshed state, a rotating rod (8) is rotatably connected to one side of the support plate (3), a hollow gear (9) is fixedly arranged on the inner wall of the rotating rod (8), a fixed gear (10) is fixedly arranged on one side of the rotating rod (8), and a fixed block (11) is fixedly arranged on one side of the fixed gear (10), a gear groove hole is formed in the fixing block (11), a first printing plate (12) is fixedly mounted on one side of the fixing block (11), and a second printing plate (24) is fixedly mounted at the bottom of the fixing block (11).
2. The turnover printing platform mechanism for the 3D printer according to claim 1, characterized in that: one side fixed mounting of first printing plate (12) has board (13) of gathering dust, gather dust and seted up the notch on board (13), the inside fixed mounting of the notch of board (13) of gathering dust has dust collection bucket (14), the movable joint in one side of dust collection bucket (14) has suction fan (15).
3. The turnover printing platform mechanism for the 3D printer according to claim 2, characterized in that: one side of the dust collection barrel (14) is hinged with a dust collection door (16), and one side of the dust collection door (16) is fixedly provided with a switch handle (17).
4. The turnover printing platform mechanism for the 3D printer according to claim 2, characterized in that: the bottom fixed mounting of board (13) gathers dust has damping spring (18), damping spring (18) set up to four, four damping spring (18) set up around first printing plate (12).
5. The turnover printing platform mechanism for the 3D printer according to claim 1, characterized in that: the inner wall of the sliding rod (2) is provided with a protective cover (19), and the protective cover (19) is arranged in a telescopic state.
6. The turnover printing platform mechanism for the 3D printer according to claim 1, characterized in that: slide bar (2) and protection casing (19) set up to the multiunit, multiunit slide bar (2) and protection casing (19) are the symmetry axis about the horizontal center line of threaded rod (6), are the setting of axial symmetry state, backup pad (3) are provided with two, two backup pad (3) are the symmetry axis about the horizontal center line of first printing plate (12), are the setting of axial symmetry state.
7. The turnover printing platform mechanism for the 3D printer according to claim 3, characterized in that: the bottom of slide bar (2) is equipped with spacing collar (20), the inner wall fixed mounting of slide bar (2) has limiting plate (21).
8. The turnover printing platform mechanism for the 3D printer according to claim 1, characterized in that: the top end threaded connection of threaded rod (6) has connecting plate (22), connecting plate (22) are the fixed state setting with support frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111519556.8A CN114161709A (en) | 2021-12-13 | 2021-12-13 | Turnover type printing platform mechanism for 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111519556.8A CN114161709A (en) | 2021-12-13 | 2021-12-13 | Turnover type printing platform mechanism for 3D printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114161709A true CN114161709A (en) | 2022-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111519556.8A Pending CN114161709A (en) | 2021-12-13 | 2021-12-13 | Turnover type printing platform mechanism for 3D printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114161709A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2567318C1 (en) * | 2014-05-06 | 2015-11-10 | Общество с ограниченной ответственностью "Научно-Производственное Предприятие Интеллектуальные Информационные Системы" | Device of displacement of 3d-printer working table |
| CN210100719U (en) * | 2019-06-06 | 2020-02-21 | 浙江易启云电子科技有限公司 | 3D printer workstation |
| KR102084893B1 (en) * | 2019-10-08 | 2020-05-26 | 주식회사 에스앤티 | 3D printer having powder cleaner |
| CN112757634A (en) * | 2021-01-15 | 2021-05-07 | 西南林业大学 | Three-nozzle five-degree-of-freedom 3D printer |
| CN112974851A (en) * | 2021-02-04 | 2021-06-18 | 江苏威拉里新材料科技有限公司 | Automatic 3D printer of clearance |
| CN214726515U (en) * | 2021-05-19 | 2021-11-16 | 威海骏威复合材料有限公司 | 3D printing equipment capable of printing plates of any length |
-
2021
- 2021-12-13 CN CN202111519556.8A patent/CN114161709A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2567318C1 (en) * | 2014-05-06 | 2015-11-10 | Общество с ограниченной ответственностью "Научно-Производственное Предприятие Интеллектуальные Информационные Системы" | Device of displacement of 3d-printer working table |
| CN210100719U (en) * | 2019-06-06 | 2020-02-21 | 浙江易启云电子科技有限公司 | 3D printer workstation |
| KR102084893B1 (en) * | 2019-10-08 | 2020-05-26 | 주식회사 에스앤티 | 3D printer having powder cleaner |
| CN112757634A (en) * | 2021-01-15 | 2021-05-07 | 西南林业大学 | Three-nozzle five-degree-of-freedom 3D printer |
| CN112974851A (en) * | 2021-02-04 | 2021-06-18 | 江苏威拉里新材料科技有限公司 | Automatic 3D printer of clearance |
| CN214726515U (en) * | 2021-05-19 | 2021-11-16 | 威海骏威复合材料有限公司 | 3D printing equipment capable of printing plates of any length |
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