CN108284503A - A kind of the 3D printing preparation facilities and method of functional material - Google Patents
A kind of the 3D printing preparation facilities and method of functional material Download PDFInfo
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- CN108284503A CN108284503A CN201810186294.XA CN201810186294A CN108284503A CN 108284503 A CN108284503 A CN 108284503A CN 201810186294 A CN201810186294 A CN 201810186294A CN 108284503 A CN108284503 A CN 108284503A
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- quartz crystal
- crystal unit
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- functional material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
-
- 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
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Producing Shaped Articles From Materials (AREA)
Abstract
The invention discloses a kind of 3D printing preparation facilities of functional material, including workbench, and the Z-direction driving device that driving workbench moves up and down wherein is equipped with below workbench, and the lower right of workbench, which is equipped with, receives powder cylinder；The top of workbench is equipped with powder supply material cylinder, and powder supply material cylinder is internally provided with Bo Fen mechanisms；The upper surface of workbench is provided with powdering roller, the upper left side of workbench is provided with the quartz crystal unit case for placing quartz crystal unit, it is additionally provided with vibrating screen in quartz crystal unit case, quartz crystal unit outlet is provided with below quartz crystal unit case, the lower section of quartz crystal unit outlet is provided with quartz crystal unit transport mechanism, and water injector is provided with below quartz crystal unit transport mechanism.The present invention can prepare the new function material of special construction, solve the process difficulties of multiple material composite manufacturing, improve the functional effect and preparation efficiency of functional material, effectively control the functional cost of noise circumstance.
Description
Technical field
The present invention relates to 3D printing technique field, more particularly to the 3D printing preparation facilities and method of a kind of functional material.
Background technology
3D printing technique is sliced by software hierarchy based on Computerized three-dimensional designs a model, and laser beam, heat are utilized
The special materials such as metal powder, ceramic powders, plastics, cell tissue are carried out successively accumulation and cohered by the modes such as melt-blown mouth, finally
Superposition molding, produces entity products.It is essentially identical with common print operation principle, equipped with liquid or powder etc. in printer
Printed material after being connect with computer, is controlled by computer and " printed material " is stacked up from level to level, finally on computer
Blueprint becomes in kind.Relative to traditional large-scale increasing material manufacturing equipment, 3D printing concept focus on to embody the miniaturization of its equipment,
Intelligent and personalized features.
There are many kinds of existing 3D printing techniques, as fused glass pellet technology, Selective Laser Sintering, cubic light are solid
Change technology, three dimensional printing technology, PolyJet spraying techniques etc., application field is also very extensive, but without for composite junction
The 3D printing technique of structure functional material, the functional material preparation process with composite construction is complex, is only to be at present
In the laboratory hand-made stage, manufacturing process is not perfect, and shaping efficiency is low, does not form the preparation flow of standard, also nothing
Method carries out large-scale standardization production and practical application.
Invention content
The shortcomings that it is a primary object of the present invention to overcome the prior art and deficiency, provide a kind of 3D printing of functional material
Preparation facilities, can solve that complicated with composite construction functional material preparation process, manufacturing process is not perfect, and shaping efficiency is low
Problem.
Another object of the present invention is to provide a kind of 3D printing preparation methods of functional material.
The purpose of the present invention is realized by the following technical solution：
Driving work is equipped with below a kind of 3D printing preparation facilities of functional material, including workbench, wherein workbench
Make the Z-direction driving device of platform up and down motion, the lower right of workbench, which is equipped with, receives powder cylinder；The top of workbench, which is equipped with, to be supplied
Powder cylinder, powder supply material cylinder are internally provided with Bo Fen mechanisms；The Bo Fen mechanisms include L be uniformly arranged broadcast powder roller, and driving L
It is a broadcast powder roller broadcast powder driving device, L >=1；The upper surface of workbench is provided with powdering roller, and the upper left side of workbench is set
It is equipped with the quartz crystal unit case for placing quartz crystal unit, vibrating screen is additionally provided in quartz crystal unit case, is set below quartz crystal unit case
It is equipped with quartz crystal unit outlet, the lower section of quartz crystal unit outlet is provided with quartz crystal unit transport mechanism, quartz crystal unit transport mechanism
Lower section is provided with water injector.
The Z-direction driving device include N root Z axis lead screw, Z axis synchronizing wheel, Z axis synchronous belt, decelerating motor, M roots guide post,
Guide rod installs Z axis synchronizing wheel wherein on decelerating motor, connected and be arranged in workbench both sides with guide post by Z axis synchronous belt
Z axis lead screw and the lower movement in the Z-axis direction of guide rod driving workbench, M >=2, N >=2.
The quartz crystal unit transport mechanism includes transmission belt idler wheel A, transmission belt, transmission belt idler wheel B, wherein transmission belt idler wheel
A, transmission belt idler wheel B is respectively placed in the both ends of transmission belt, for driving transmission V belt translation from the quartz crystal unit in quartz crystal unit case
Fall to workbench.
The water injector includes flow control valve, atomizer, water pipe, water pump, pressure regulator valve, air hose, air compressor machine,
Middle atomizer connects flow control valve, and flow control valve connection air hose and water pipe, air hose, water pipe are separately connected pneumatics
Machine, water pump.
The motion realization device of the driving powdering roller and atomizer is along X, the movement of Y-direction, wherein powdering
Roller is moved reciprocatingly in the X-axis direction by the stepper motor of X-direction, synchronizing wheel, synchronous belt driving, and atomizer is by Y-axis
The stepper motor in direction, synchronizing wheel, synchronous belt driving move reciprocatingly in the Y-axis direction.
The 3D printing preparation facilities of the functional material further includes driving the vibration of quartz crystal unit case and vibrating screen paving oscillator
Mechanism, the paving oscillator mechanism includes vibrating motor, eccentric wheel, spring.
The quartz crystal unit is the circular foil member that flexible material is wrapped up on surface.
The powder placed in the powder supply material cylinder is quick hardening cement, and the quick hardening cement is dead burned magnesia MgO, di(2-ethylhexyl)phosphate
The magnesium phosphate potassium cement (MKPC) that hydrogen potassium, flyash form according to a certain percentage.
Another object of the present invention is realized by the following technical solution：
A kind of 3D printing preparation method of functional material, including the step of following sequence：
1) figure of the threedimensional model of functional material is established by Three-dimensional Design Software；
2) elastic wave band gaps frequency adjustable functional material model in 50Hz-500Hz is constructed according to designing a model, made
Slicing delamination is carried out to model with professional Slice Software；
3) track is scanned according to the array of the plan generation quartz crystal unit of layering and atomizer；
4) powder is broadcast to workbench by Bo Fen mechanisms, by the powdering roller of powder supply mechanism the powder on workbench
It paves, one layer of water is sprayed on powder face by the atomizer of water injection system, passes through quartz crystal unit case, vibrating screen, quartz crystal unit
Transport mechanism array puts quartz crystal unit, is iteratively repeated this process to functional material and prepares completion；
5) preparation of functional material is completed, cleaning work platform takes out functional material plate.
The thickness of the hierarchy slicing is 0.5mm~5mm, and the quartz crystal unit is a diameter of 5~50mm, thickness 0.1
The sheet metal of~3mm；The foil surfaces wrap up one layer of flexible material, and thickness is 0.3~6mm；The powder is straight
Diameter is at 300 μm hereinafter, and being concentrated mainly on 10~150 μm of range；The water-jet velocity of the atomizer be 0.015ml/s~
15ml/s, air compressor machine pressure is about in 1MPa~5MPa.
Compared with prior art, the present invention having the following advantages that and advantageous effect：
The beneficial effects of the invention are as follows：
(1) preparation process of the present invention relative to existing compound functional material can be processed directly and be prepared arbitrarily
The functional material of shape can use the place special with some, greatly reduce the preparation difficulty of composite construction functional material,
Improve preparation efficiency.
(2) quick hardening cement that uses of the present invention is quickly to solidify reagent, setting rate faster than ordinary cement 3~5 to be added
Times, increase the coagulation efficacy of material.
(3) for the quartz crystal unit that the present invention uses for the phonon crystal with elastic wave band gaps, structure is with metal spy
Property hard material surface wrap up one layer of flexible rubber plastic, specially 5~50mm of diameter of phi, thickness be 0.1~
The sheet metal of 3mm wraps up one layer of soft material in foil surfaces, and honest and kind is 0.3~6mm.
(4) present invention has more Material claddings by water injection system, paving quartz crystal unit system, the printings such as three-dimensional motion mechanism
The functional material of structure.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the 3D printing preparation facilities of functional material of the present invention.
Fig. 2 is a kind of flow chart of the 3D printing preparation method of functional material of the present invention.
Reference numeral meaning is as follows：
1- workbenches；2- powdering rollers；3-Z axial filament bars；4-Z axis synchronizing wheels；5-Z axis synchronous belts；6- pressure regulator valves；7- is empty
Tracheae；8- air compressor machines；9- decelerating motors；10- guide posts；11- receives powder cylinder；12- cement powder；13- guide rods；14- broadcasts powder stepping
Motor；15- broadcasts powder synchronizing wheel；16- broadcasts powder synchronous belt；17- broadcasts powder roller；18- powder supply material cylinders；19- quartz crystal unit casees；20- vibrates
Sieve；21- transmission belt idler wheels A；22- transmission belts；23- flow control valves；24- transmission belt idler wheels B；25-X axis rails；26- atomization sprays
Mouth；27- water pipes；28- water pumps.
Specific implementation mode
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
Routine techniques progress can refer to for the feature structure and technological parameter that do not indicate especially herein in this.
A kind of 3D printing preparation facilities of functional material includes three-dimensional motion mechanism, workbench, Bo Fen mechanisms, powdering machine
Structure, paving oscillator mechanism, powder supply material cylinder, receives powder cylinder, control system at water injection system.The three-dimensional motion mechanism includes X-Y plane
Guide rail, the guide rod of movement, lead screw, guide rod in Z-direction；Material in powder supply material cylinder is multicast to work by the Bo Fen mechanisms according to quantity
Make on platform, the powder supply mechanism uniformly paves the material powder on workbench；The water injection system is sprayed on material powder surface
One layer of water；The paving oscillator mechanism driving quartz crystal unit case and shaker vibration, and then oscillator is taped against in powder；The receipts powder
Material cylinder is used for receiving extra material powder；The control system includes man-machine interactive system, communication system, is realized to functional material
The control of 3D printing device.By the above-mentioned means, the present invention can prepare the new function material of special construction, a variety of materials are solved
The process difficulties for expecting composite manufacturing, improve the functional effect and preparation efficiency of functional material, effectively control the function of noise circumstance
Cost.
Specifically, such as Fig. 1, a kind of 3D printing preparation facilities of functional material, including Bo Fen mechanisms, powder supply mechanism, water spray
System, paving oscillator mechanism, control system；
The Bo Fen mechanisms include broadcast powder roller 17, for material cylinder 18, broadcast powder stepper motor 14, broadcast that powder synchronizing wheel 15, to broadcast powder same
Band 16 is walked, powder roller 17 is broadcast by broadcasting powder stepper motor 14 by broadcasting powder synchronizing wheel 15 and broadcasting the driving of powder synchronous belt 16 by mechanism, feed
Quick hardening cement powder 12 in case 18, is multicast to according to the amount of setting on workbench 1.
The powder supply mechanism includes workbench 1, powdering roller 2, the driving device for driving powdering roller, is being printed
Cheng Zhong, workbench 1 move down one layer, and powdering roller then carries out a powdering.
The water injection system includes that atomizer 26 links flow control valve 23, and the flow control valve 23 connects air hose
7 and water pipe 27, air hose 2 and water pipe 27 be separately connected air compressor machine 8 and water pump 28.The water-jet velocity of the preferred water pump of water injection system 28
For 0.015ml/s~15ml/s, 8 compressed air air pressure of air compressor machine is about in 1~5MPa.
The paving oscillator mechanism includes quartz crystal unit case 19, vibrating screen 20, scroll wheel, transmission belt 22, scroll wheel and driving
The driving motor of scroll wheel and scroll wheel, the continuous shaking under the driving of vibrating screen 20 of quartz crystal unit case 19, keeps quartz crystal unit equal
Even falls on transmission belt 22, and right side translation of the scroll wheel to diagram direction drives transmission belt 22 to move to the right, at scroll wheel
In driven state, when scroll wheel is moved to the position of limit switch, and limit switch is touched, scroll wheel is clockwise at this time
Rotation is 22 rollback of transmission belt, and quartz crystal unit is then fallen on 12 face of cement powder of workbench 1, when scroll wheel returns to initial bit
It sets, scroll wheel is rolled onto above scroll wheel again rotating counterclockwise a conveyer belt 22.
The control system includes hardware system and software systems, wherein hardware system include master controller, input and
Output, stepper motor driving, servo motor driving, flow control system；Software includes Slice Software, controller and servo electricity
The drive software of machine, stepper motor.
Such as Fig. 2, a kind of Method of printing of the 3D printing preparation facilities of functional material includes the following steps：
1) Three Dimensional Design Model that functional material is established by Three-dimensional Design Software, saves as STL formatted files；
2) elastic wave band gaps frequency adjustable functional material model in 50Hz-500Hz is constructed according to designing a model, made
Slicing delamination is carried out to model with professional Slice Software, generates the slice code of machine recognition；
3) 3D printing equipment is imported, the X-Y scheme generated according to slicing delamination is converted to slice using control software
Code and array pattern and the atomizer scanning track for forming quartz crystal unit；
4) start air compressor machine 8, some fixed value of 8 compressed air air pressure of air compressor machine about between 1~5MPa, and maintain
Certain range.
5) initial networked control systems, examine whether 3D printing equipment components can be worked normally, and to 3D printing
Equipment components are calibrated.
6) workbench 1 is adjusted to initial position, and powder synchronizing wheel 15 is broadcast by the drive of powder synchronous motor 14 of broadcasting of Bo Fen mechanisms
Powder roller 17 is broadcast with the driving of powder synchronous belt 16 is broadcast, the quick hardening cement powder 12 in feed tank 18, workbench 1 is multicast to according to the amount of setting
On, the quick hardening cement powder 12 on workbench 1 is paved by the powdering roller 2 of powder supply mechanism, passes through the water pump of water injection system
28 water-jet velocity is 0.015ml/s~15ml/s, and 8 compressed air air pressure of air compressor machine about exists in the atomizer of 1~5MPa 26
One layer of water is sprayed on 12 face of quick hardening cement, the quartz crystal unit case 19 by spreading oscillator mechanism continuously shakes under the driving of vibrating screen 20
It is dynamic, so that quartz crystal unit is uniformly fallen on transmission belt 22, right side translation of the scroll wheel to diagram direction drives transmission belt 22 to the right
Side is moved, and scroll wheel is in driven state, when scroll wheel is moved to the position of limit switch, and is touched limit switch, is rolled at this time
Driving wheel is rotated clockwise 22 rollback of transmission belt, and quartz crystal unit is then fallen on 12 face of cement powder of workbench 1, works as rolling
Driving wheel returns to initial position, and scroll wheel is rolled onto above scroll wheel again rotating counterclockwise a conveyer belt 22, completes 3D printing
One work period, workbench 1 decline one layer.
7) continuous cycle operation step 6) workflow, and judge whether all slicing layers have printed completion, until function
Material preparation is completed.
8) preparation of functional material is completed, air compressor machine 8, water pump 28 is automatically closed in system, and cleaning work platform takes out function
Plate of material.
The thickness of the step (1) to (8) hierarchy slicing is 0.5mm-5mm, and the quartz crystal unit is sheet metal table
Bread wraps up in one layer of soft material, and honest and kind is 0.3~6mm, and the powder of the quick hardening cement is 10 μm~300 μm, described
Water-jet velocity is 0.015ml/s~15ml/s, and 8 pressure of air compressor machine is about in 1MPa~5MPa.
Preparation process of the present invention relative to existing compound functional material, directly processing can prepare any shape
Functional material, the place special with some can be used, greatly reduce the preparation difficulty of composite construction functional material, improve
Preparation efficiency.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (10)
1. a kind of 3D printing preparation facilities of functional material, it is characterised in that：Including workbench, wherein set below workbench
There is the Z-direction driving device that driving workbench moves up and down, the lower right of workbench, which is equipped with, receives powder cylinder；Workbench it is upper
Side is equipped with powder supply material cylinder, and powder supply material cylinder is internally provided with Bo Fen mechanisms；The Bo Fen mechanisms include L be uniformly arranged broadcast powder roller,
And driving L broadcast powder roller broadcast powder driving device, L >=1；The upper surface of workbench is provided with powdering roller, workbench
Upper left side be provided with the quartz crystal unit case for placing quartz crystal unit, be additionally provided with vibrating screen in quartz crystal unit case, crystal shakes
Quartz crystal unit outlet is provided with below sub- case, the lower section of quartz crystal unit outlet is provided with quartz crystal unit transport mechanism, quartz crystal unit
Water injector is provided with below transport mechanism.
2. the 3D printing preparation facilities of a kind of functional material according to claim 1, it is characterised in that：The Z-direction driving dress
It sets including N root Z axis lead screw, Z axis synchronizing wheel, Z axis synchronous belt, decelerating motor, M roots guide post, guide rod, wherein pacifies on decelerating motor
Z axis synchronizing wheel is filled, the Z axis lead screw and guide rod being arranged in workbench both sides is connected with guide post by Z axis synchronous belt and drives work
Make platform lower movement in the Z-axis direction, M >=2, N >=2.
3. the 3D printing preparation facilities of a kind of functional material according to claim 1, it is characterised in that：The quartz crystal unit passes
It includes transmission belt idler wheel A, transmission belt, transmission belt idler wheel B to send mechanism, and wherein transmission belt idler wheel A, transmission belt idler wheel B are respectively placed in
The both ends of transmission belt, for driving transmission V belt translation to fall to workbench from the quartz crystal unit in quartz crystal unit case.
4. the 3D printing preparation facilities of a kind of functional material according to claim 1, it is characterised in that：The water injector packet
Flow control valve, atomizer, water pipe, water pump, pressure regulator valve, air hose, air compressor machine are included, wherein atomizer connects flow control
Valve, flow control valve connection air hose and water pipe, air hose, water pipe are separately connected air compressor machine, water pump.
5. the 3D printing preparation facilities of a kind of functional material according to claim 1, it is characterised in that：The driving powder-laying roller
The motion realization device of cylinder and atomizer is along X, the movement of Y-direction, wherein powdering roller, by the stepping electricity of X-direction
Machine, synchronizing wheel, synchronous belt driving move reciprocatingly in the X-axis direction, atomizer by the stepper motor of Y direction, synchronizing wheel,
Synchronous belt driving moves reciprocatingly in the Y-axis direction.
6. the 3D printing preparation facilities of a kind of functional material according to claim 1, it is characterised in that：The functional material
3D printing preparation facilities further includes driving the vibration of quartz crystal unit case and vibrating screen paving oscillator mechanism, paving oscillator mechanism packet
Include vibrating motor, eccentric wheel, spring.
7. the 3D printing preparation facilities of a kind of functional material according to claim 1, it is characterised in that：The quartz crystal unit is
Wrap up the circular foil member of flexible material in surface.
8. the 3D printing preparation facilities of a kind of functional material according to claim 1, it is characterised in that：In the powder supply material cylinder
The powder of placement is quick hardening cement, and the quick hardening cement is dead burned magnesia, potassium dihydrogen phosphate, flyash group according to a certain percentage
At magnesium phosphate potassium cement.
9. a kind of 3D printing preparation method of functional material, which is characterized in that include following sequence the step of：
1) figure of the threedimensional model of functional material is established by Three-dimensional Design Software；
2) elastic wave band gaps frequency adjustable functional material model in 50Hz-500Hz is constructed according to designing a model, using special
Industry Slice Software carries out slicing delamination to model；
3) track is scanned according to the array of the plan generation quartz crystal unit of layering and atomizer；
4) powder is broadcast to workbench by Bo Fen mechanisms, the powder on workbench is spread by the powdering roller of powder supply mechanism
It is flat, one layer of water is sprayed on powder face by the atomizer of water injection system, is passed by quartz crystal unit case, vibrating screen, quartz crystal unit
It send mechanism array to put quartz crystal unit, is iteratively repeated this process to functional material and prepares completion；
5) preparation of functional material is completed, cleaning work platform takes out functional material plate.
10. the 3D printing preparation method of a kind of functional material according to claim 9, which is characterized in that the hierarchy slicing
Thickness be 0.5mm~5mm, the quartz crystal unit be a diameter of 5~50mm, thickness be 0.1~3mm sheet metal；It is described
Foil surfaces wrap up one layer of flexible material, and thickness is 0.3~6mm；The diameier is at 300 μm or less；The mist
The water-jet velocity for changing nozzle is 0.015ml/s~15ml/s, and air compressor machine pressure is 1MPa~5MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810186294.XA CN108284503A (en) | 2018-03-07 | 2018-03-07 | A kind of the 3D printing preparation facilities and method of functional material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810186294.XA CN108284503A (en) | 2018-03-07 | 2018-03-07 | A kind of the 3D printing preparation facilities and method of functional material |
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ID=62833067
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| SU611707A1 (en) * | 1975-08-06 | 1978-06-25 | Предприятие П/Я Р-6543 | Spring-coiling apparatus |
| CN105938424A (en) * | 2015-03-06 | 2016-09-14 | 索尼电脑娱乐公司 | System, device and method of 3D printing |
| CN106001564A (en) * | 2016-06-28 | 2016-10-12 | 中北大学 | Crawler-type upper powder supplying and two-way powder spreading device for selective laser sintering (SLS) |
| CN106827171A (en) * | 2017-01-20 | 2017-06-13 | 中国建筑材料科学研究总院 | A kind of 3D printer and its Method of printing |
| CN106984817A (en) * | 2017-05-28 | 2017-07-28 | 安徽科元三维技术有限公司 | Power spreading device for 3D printer |
| CN208148114U (en) * | 2018-03-07 | 2018-11-27 | 广州市光机电技术研究院 | A kind of 3D printing preparation facilities of functional material |
-
2018
- 2018-03-07 CN CN201810186294.XA patent/CN108284503A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU611707A1 (en) * | 1975-08-06 | 1978-06-25 | Предприятие П/Я Р-6543 | Spring-coiling apparatus |
| CN105938424A (en) * | 2015-03-06 | 2016-09-14 | 索尼电脑娱乐公司 | System, device and method of 3D printing |
| CN106001564A (en) * | 2016-06-28 | 2016-10-12 | 中北大学 | Crawler-type upper powder supplying and two-way powder spreading device for selective laser sintering (SLS) |
| CN106827171A (en) * | 2017-01-20 | 2017-06-13 | 中国建筑材料科学研究总院 | A kind of 3D printer and its Method of printing |
| CN106984817A (en) * | 2017-05-28 | 2017-07-28 | 安徽科元三维技术有限公司 | Power spreading device for 3D printer |
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