CN109049695A - A kind of industrial design printer - Google Patents
A kind of industrial design printer Download PDFInfo
- Publication number
- CN109049695A CN109049695A CN201810985667.XA CN201810985667A CN109049695A CN 109049695 A CN109049695 A CN 109049695A CN 201810985667 A CN201810985667 A CN 201810985667A CN 109049695 A CN109049695 A CN 109049695A
- Authority
- CN
- China
- Prior art keywords
- block
- circular
- permanent magnets
- fixed
- industrial design
- 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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Classifications
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
- Ink Jet (AREA)
Abstract
The present invention provides a kind of industrial design printer, is related to industrial design field.The industrial design printer, including X horizontal axis, retainer is sequentially connected on the X horizontal axis, the left side of the retainer is simultaneously welded and fixed positioned at the lower section of X horizontal axis with link block, it is fixedly connected with damping device on the left of the link block, radiator fan is connected on the damping device, the input terminal of the radiator fan is electrically connected with flexible wire, the damping device is internally provided with magnetic means, and the bottom of the retainer is fixedly connected with spray head.The industrial design printer, pass through the damping spring being fixedly connected on the right side of fixed block, the one end of damping spring far from fixed block is connect with connecting shaft, attachment base and radiator fan, shock-absorbing operation can be carried out during radiator fan high-speed rotation, shake when effectively reducing radiator fan rotation is transmitted on spray head the generation that D printer can be made to reduce shake in print procedure, improves the accuracy of printing.
Description
Technical field
The present invention relates to industrial design field, specially a kind of industrial design printer.
Background technique
3D printer " can not only print " building and completely build, it might even be possible to print in spaceship to astronaut
The shape of any desired article.3D printer may be implemented to convert the modeling that Techno-Industrial designs to entity structure, 3D tool
Having printer to have, printing precision is high, the high advantage of shape similarity.
The material that printer uses is the adhesive materials such as powdery metal or plastic, carrys out structure by layer-by-layer printing
The technology of divine force that created the universe body, often at printing head be arranged heater printed material is melted, heater work after need by
Spray head carries out cooling operation, is generally radiated using fan to spray head, but fan during heat dissipation since fan exists
Vibration can be generated during high-speed rotation, the vibration that fan generates can be directly delivered on printing head, the vibration of printing head
The accuracy that can influence 3D printing influences the quality of printing.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of industrial design printers, solve fan and are radiating
During vibration can be generated during high-speed rotation due to fan, the vibration that fan generates can be directly delivered to printing head
On, the vibration of printing head can influence the accuracy of 3D printing, influence printing quality the problem of.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of industrial design printer, packet
X horizontal axis is included, retainer, the left side of the retainer and lower section and the link block for being located at X horizontal axis are sequentially connected on the X horizontal axis
It is welded and fixed, damping device is fixedly connected on the left of the link block, radiator fan is connected on the damping device, it is described
The input terminal of radiator fan is electrically connected with flexible wire, and the damping device is internally provided with magnetic means, the retainer
Bottom be fixedly connected with spray head, be provided with conveying pipeline above the retainer, retainer is run through in the end of the conveying pipeline
And be connected to the spray head of retainer bottom setting, the outer surface of the spray head is fixedly connected with having heaters.
Preferably, the damping device includes circular block, movable chamber, circular trough, connecting shaft, damping spring, support column, consolidates
Determine block, attachment base, fixed screw bar, left side and the circular block of the link block are welded and fixed, during the inside of the circular block is
Sky, the circular trough are provided with the two sides of circular block, and the circular trough is connected to the inside of movable chamber, and the connecting shaft, which is located at, lives
One end of the inside of dynamic chamber, the connecting shaft is welded and fixed through circular trough and with the attachment base being arranged on the right side of circular trough, described
The other end of connecting shaft is fixedly connected through circular trough and with the damping spring being arranged on the left of circular block, and the damping spring is separate
One end of connecting shaft is welded and fixed with fixed block, and the right side of the fixed block is welded and fixed by support column and circular block.
Preferably, two circular trough specifications are identical, and two circular troughs are symmetrical arranged by central axes of circular block.
Preferably, the left side of the attachment base is screwed by fixed screw bar with radiator fan.
Preferably, the magnetic means includes permanent magnets one and permanent magnets two, the inner wall bottom of the movable chamber and permanent magnetism
Block two is fixedly connected, and the permanent magnets one are located at the top of permanent magnets two, and the outer surface of the connecting shaft and permanent magnets one are fixed
Connection.
(3) beneficial effect
The present invention provides a kind of industrial design printers.Have it is following the utility model has the advantages that
1, the industrial design printer, by the damping spring being fixedly connected on the right side of fixed block, damping spring is far from solid
The one end for determining block is connect with connecting shaft, attachment base and radiator fan, can carry out damping during radiator fan high-speed rotation
Operation, shake when effectively reducing radiator fan rotation, which is transmitted on spray head, can make D printer reduce shake in print procedure
It generates, improves the accuracy of printing.
2, the industrial design printer, the permanent magnets two and connecting shaft appearance being fixedly connected by movable cavity wall bottom
The permanent magnets one that face is fixedly connected, permanent magnets one are located at the surface of permanent magnets two, by between permanent magnets one and permanent magnets two
Magnetic pole it is identical, according to the mutually exclusive principle of homopolar magnet, the repulsion between permanent magnets one and permanent magnets two can be by connecting shaft
It is supported and is suspended in connecting shaft the inside of circular trough, connecting shaft is suspended in the mistake that can be worked in radiator fan in circular trough
The shake for issuing fan in journey carries out energy dissipating by permanent magnets one and permanent magnets two, further reduces the shake air exercise of fan
Print spray head causes the case where shaking.
3, the industrial design printer, the shape that circular trough opens up is rounded to make connecting shaft have certain movable model
It encloses, reduces connecting shaft and touch circular block, prevent the vibration of radiator fan from contacting transmitting with circular block by connecting shaft.
4, the industrial design printer, radiator fan are connected by flexible wire, and flexible wire is the soft company of copper braid over braid
It connects, the superior, strong applicability of the conductive energy of copper copper braid over braid, setting flexible wire can reduce the vibration for issuing radiator fan
It is transmitted on spray head, improves printing effect.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is partial enlarged view at A in structure of the invention Fig. 1.
Wherein, 1X horizontal axis, 2 retainers, 3 link blocks, 4 damping devices, 401 circular blocks, 402 movable chambers, 403 circular troughs,
404 connecting shafts, 405 damping springs, 406 support columns, 407 fixed blocks, 408 attachment bases, 409 fixed screw bars, 5 radiator fans, 6
Flexible wire, 7 magnetic means, 701 permanent magnets one, 702 permanent magnets two, 8 conveying pipelines, 9 spray heads, 10 heaters.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
The embodiment of the present invention provides a kind of industrial design printer, as shown in Figs. 1-2, including X horizontal axis 1,3D printer
Equipped with tri- axis of XYZ, the transmission of three axis facilitates carries out printing head on active print operation, X horizontal axis 1 inside activity space
On be sequentially connected with retainer 2, the lower section that the left side of retainer 2 is simultaneously located at X horizontal axis 1 is welded and fixed with link block 3, link block 3
Left side be fixedly connected with damping device 4, be connected with radiator fan 5 on damping device 4, the input terminal electrical connection of radiator fan 5
Flexible conducting wire 6, radiator fan 5 are connected by flexible wire 6, and flexible wire 6 is that copper braid over braid is flexible coupling, and copper copper weaves belt
Superior, strong applicability is had conductivity, setting flexible wire 6, which can be reduced, is transmitted to spray head 9 for the vibration that radiator fan 5 issues
On, printing effect is improved, damping device 4 is internally provided with magnetic means 7, and the bottom of retainer 2 is fixedly connected with spray head 9,
The top of retainer 2 is provided with conveying pipeline 8, spray head 9 of the end of conveying pipeline 8 through retainer 2 and with the setting of 2 bottom of retainer
Connection, the outer surface of spray head 9 is fixedly connected with having heaters 10.
Damping device 4 includes circular block 401, movable chamber 402, circular trough 403, connecting shaft 404, damping spring 405, support
Column 406, fixed block 407, attachment base 408, fixed screw bar 409, left side and the circular block 401 of link block 3 are welded and fixed, round
The inside of block 401 be it is hollow, circular trough 403 is provided with the two sides of circular block 407, and the inside of circular trough 403 and movable chamber 402 connects
Logical, connecting shaft 404 is located at the inside of movable chamber 402, one end of connecting shaft 404 through circular trough 403 and on the right side of circular trough 403
The attachment base 408 of setting is welded and fixed, and two 403 specifications of circular trough are identical, and two circular troughs 403 are axis with circular block 401
Line is symmetrical arranged, and the shape that circular trough 403 opens up is rounded to make connecting shaft 404 have certain scope of activities, reduces connection
Axis 404 touches circular block 401, prevents the vibration of radiator fan 5 from contacting transmitting with circular block 401 by connecting shaft 404, connects
The other end of axis 404 is through circular trough 403 and is fixedly connected with the damping spring 405 being arranged on the left of circular block 401, damping spring
405 one end far from connecting shaft 404 is welded and fixed with fixed block 407, and the right side of fixed block 407 passes through support column 406 and circle
Block 401 is welded and fixed, and the left side of attachment base 408 is screwed by fixed screw bar 409 with radiator fan 5, passes through fixed block
The damping spring 405 that 407 right sides are fixedly connected, the one end of damping spring 405 far from fixed block 407 and connecting shaft 404, attachment base
408 and radiator fan 5 connect, shock-absorbing operation can be carried out during 5 high-speed rotation of radiator fan, effectively reduce radiator fan
Shake when 5 rotation is transmitted on spray head 9 generation that 3D printer can be made to reduce shake in print procedure, improves the accurate of printing
Degree.
Magnetic means 7 includes permanent magnets 1 and permanent magnets 2 702, inner wall bottom and the permanent magnets two of movable chamber 402
702 are fixedly connected, and permanent magnets 1 are located at the top of permanent magnets 2 702, and the outer surface of connecting shaft 404 and permanent magnets 1 are solid
Fixed connection, what the permanent magnets 2 702 being fixedly connected by 402 inner wall bottom of movable chamber were fixedly connected with 404 outer surface of connecting shaft
Permanent magnets 1, permanent magnets 1 are located at the surface of permanent magnets 2 702, by permanent magnets 1 and permanent magnets 2 702 it
Between magnetic pole it is identical, according to the mutually exclusive principle of homopolar magnet, the repulsion between permanent magnets 1 and permanent magnets 2 702 can
Connecting shaft 404 is supported to and is suspended in connecting shaft 404 inside of circular trough 403, connecting shaft 404 is suspended in circular trough
The shake that can be issued fan during radiator fan 5 works in 403 by permanent magnets 1 and permanent magnets 2 702 into
Row energy dissipating, the shake for further reducing fan cause the case where shaking to printing head 9.
Working principle: in use, radiator fan 5 can be worked at the same time the spray head 9 of printer when printer heater works
Cool down, by the damping spring 405 being fixedly connected on the right side of fixed block 407, damping spring 405 far from fixed block 407 one
End is connect with connecting shaft 404, attachment base 408 and radiator fan 5, can carry out damping during 5 high-speed rotation of radiator fan
Operation, effectively reducing shake when radiator fan 5 rotates and being transmitted on spray head 9 can make 3D printer reduce shake in print procedure
Generation, what the permanent magnets 2 702 being fixedly connected by 402 inner wall bottom of movable chamber were fixedly connected with 404 outer surface of connecting shaft
Permanent magnets 1, permanent magnets 1 are located at the surface of permanent magnets 2 702, by permanent magnets 1 and permanent magnets 2 702 it
Between magnetic pole it is identical, according to the mutually exclusive principle of homopolar magnet, the repulsion between permanent magnets 1 and permanent magnets 2 702 can
Connecting shaft 404 is supported to and is suspended in connecting shaft 404 inside of circular trough 403, connecting shaft 404 is suspended in circular trough
The shake that can be issued fan during radiator fan 5 works in 403 by permanent magnets 1 and permanent magnets 2 702 into
Row energy dissipating, the shake for further reducing fan cause the case where shaking to printing head 9.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of industrial design printer, including X horizontal axis (1), it is characterised in that: be sequentially connected on the X horizontal axis (1)
Dynamic seat (2), the left side of the retainer (2) and the lower section for being located at X horizontal axis (1) are welded and fixed with link block (3), the link block
(3) it is fixedly connected on the left of damping device (4), is connected with radiator fan (5), the radiation air on the damping device (4)
The input terminal of fan (5) is electrically connected with flexible wire (6), and being internally provided with magnetic means (7) for the damping device (4) is described
The bottom of retainer (2) is fixedly connected with spray head (9), is provided with conveying pipeline (8), the conveying above the retainer (2)
The end of pipe (8) is connected to through retainer (2) and with the spray head (9) of retainer (2) bottom setting, the appearance of the spray head (9)
Face is fixedly connected with having heaters (10).
2. a kind of industrial design printer according to claim 1, it is characterised in that: the damping device (4) includes
Circular block (401), circular trough (403), connecting shaft (404), damping spring (405), support column (406), is consolidated movable chamber (402)
Determine block (407), attachment base (408), fixed screw bar (409), the left side of the link block (3) and circular block (401) welding are solid
Calmly, the inside of the circular block (401) is hollow, and the circular trough (403) is provided with the two sides of circular block (407), the circle
Shape slot (403) is connected to the inside of movable chamber (402), and the connecting shaft (404) is located at the inside of movable chamber (402), the company
One end of spindle (404) is welded and fixed through circular trough (403) and with the attachment base (408) being arranged on the right side of circular trough (403), institute
The other end for stating connecting shaft (404) is through circular trough (403) and solid with the damping spring (405) of setting on the left of circular block (401)
Fixed connection, the damping spring (405) are welded and fixed far from the one end of connecting shaft (404) with fixed block (407), the fixed block
(407) right side is welded and fixed by support column (406) with circular block (401).
3. a kind of industrial design printer according to claim 2, it is characterised in that: two circular trough (403) specifications
Identical, two circular troughs (403) are symmetrical arranged with circular block (401) for central axes.
4. a kind of industrial design printer according to claim 2, it is characterised in that: a left side for the attachment base (408)
Side is screwed by fixed screw bar (409) with radiator fan (5).
5. a kind of industrial design printer according to claim 1, it is characterised in that: the magnetic means (7) includes
Permanent magnets one (701) and permanent magnets two (702), the inner wall bottom of the movable chamber (402) and the fixed company of permanent magnets two (702)
It connects, the permanent magnets one (701) are located at the top of permanent magnets two (702), the outer surface of the connecting shaft (404) and permanent magnets one
(701) it is fixedly connected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011009685.8A CN112223750A (en) | 2018-08-28 | 2018-08-28 | Transmission method of printer for industrial design |
| CN201810985667.XA CN109049695B (en) | 2018-08-28 | 2018-08-28 | Printer for industrial design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810985667.XA CN109049695B (en) | 2018-08-28 | 2018-08-28 | Printer for industrial design |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011009685.8A Division CN112223750A (en) | 2018-08-28 | 2018-08-28 | Transmission method of printer for industrial design |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109049695A true CN109049695A (en) | 2018-12-21 |
| CN109049695B CN109049695B (en) | 2020-10-02 |
Family
ID=64756307
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011009685.8A Withdrawn CN112223750A (en) | 2018-08-28 | 2018-08-28 | Transmission method of printer for industrial design |
| CN201810985667.XA Active CN109049695B (en) | 2018-08-28 | 2018-08-28 | Printer for industrial design |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011009685.8A Withdrawn CN112223750A (en) | 2018-08-28 | 2018-08-28 | Transmission method of printer for industrial design |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN112223750A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109514854A (en) * | 2018-12-28 | 2019-03-26 | 温州优巴信息技术有限公司 | A kind of 3D printing spray head blowing radiator |
| CN113001972A (en) * | 2021-03-15 | 2021-06-22 | 合肥海闻自动化设备有限公司 | High-speed 3D printing system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205553258U (en) * | 2016-05-06 | 2016-09-07 | 广州市文搏智能科技有限公司 | 3D print head structure |
| CN107639830A (en) * | 2017-11-09 | 2018-01-30 | 邰宝龙 | A kind of 3D printer damping device |
| CN108013937A (en) * | 2017-12-26 | 2018-05-11 | 广州市健齿生物科技有限公司 | A kind of Dental implantion device by electromagnetic suspension damping |
| CN207349336U (en) * | 2017-09-19 | 2018-05-11 | 深圳市美好创亿医疗科技有限公司 | Magnetic levitation vibration damping device and oxygenerator |
| US20180180133A1 (en) * | 2013-08-21 | 2018-06-28 | General Electric Company | Components having vibration dampers enclosed therein and methods of forming such components |
| CN108422656A (en) * | 2018-06-01 | 2018-08-21 | 陈后亥 | A kind of 3D printing nozzle and printing plate heat dissipating device |
-
2018
- 2018-08-28 CN CN202011009685.8A patent/CN112223750A/en not_active Withdrawn
- 2018-08-28 CN CN201810985667.XA patent/CN109049695B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180180133A1 (en) * | 2013-08-21 | 2018-06-28 | General Electric Company | Components having vibration dampers enclosed therein and methods of forming such components |
| CN205553258U (en) * | 2016-05-06 | 2016-09-07 | 广州市文搏智能科技有限公司 | 3D print head structure |
| CN207349336U (en) * | 2017-09-19 | 2018-05-11 | 深圳市美好创亿医疗科技有限公司 | Magnetic levitation vibration damping device and oxygenerator |
| CN107639830A (en) * | 2017-11-09 | 2018-01-30 | 邰宝龙 | A kind of 3D printer damping device |
| CN108013937A (en) * | 2017-12-26 | 2018-05-11 | 广州市健齿生物科技有限公司 | A kind of Dental implantion device by electromagnetic suspension damping |
| CN108422656A (en) * | 2018-06-01 | 2018-08-21 | 陈后亥 | A kind of 3D printing nozzle and printing plate heat dissipating device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109514854A (en) * | 2018-12-28 | 2019-03-26 | 温州优巴信息技术有限公司 | A kind of 3D printing spray head blowing radiator |
| CN113001972A (en) * | 2021-03-15 | 2021-06-22 | 合肥海闻自动化设备有限公司 | High-speed 3D printing system |
| CN113001972B (en) * | 2021-03-15 | 2024-05-03 | 合肥海闻自动化设备有限公司 | High-speed 3D printing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109049695B (en) | 2020-10-02 |
| CN112223750A (en) | 2021-01-15 |
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