CN204278542U - A kind of nanoscale parts laser sintering and moulding device - Google Patents
A kind of nanoscale parts laser sintering and moulding device Download PDFInfo
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- CN204278542U CN204278542U CN201420736015.XU CN201420736015U CN204278542U CN 204278542 U CN204278542 U CN 204278542U CN 201420736015 U CN201420736015 U CN 201420736015U CN 204278542 U CN204278542 U CN 204278542U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a kind of nanoscale parts laser sintering and moulding device, comprise mixing sampling system, aerodynamics lens, confocal laser device group and workbench; Mixing sampling system has a cushion chamber.Powder of nanometric particles is placed in powder storage chamber, this powder is carried to hybrid chamber through gas, and fully mixes with another branch road gas, gained aerosol flows to into cushion chamber, gas mixes further with powder of nanometric particles, and pressure and flow velocity reduce, and obtain the fluid that Reynolds number is 200-700; Fluid enters cylindrical chamber with laminar flow further, after the convergence hole on each lens also focuses on, with the streamed ejection of individual particle; Particle is received by sintering matrix workbench scribbling vacuum grease, and is melted by confocal laser device group; By the movement of workbench 4 in X, Y-direction, the two-dimentional pattern with nanoscale formed precision can be obtained; By moving in Z-direction, successively stacking acquisition the parts of nanoscale formed precision can be had.
Description
Technical field
The utility model relates to laser sintering and moulding equipment, particularly relates to a kind of nanoscale parts laser sintering and moulding device.
Background technology
3D printing technique is a kind of popular manufacturing technology, has prospects for commercial application widely.To excise process technology different from tradition, and it is a kind of material utilizing motlten metal, powder or high molecular polymer etc. to have cementability that 3D prints, and utilizes successively stacking principle to carry out the technology of tectonic model.
Powder bed is bonded together formation thin layer by conventional 3D Method of printing bonding agent; In shower nozzle, spray molten plastic, plastics solidify rear bonding formation thin layer; Or adopt light-sensitive material successively stacking shaping by methods such as photocurings.Printed by 3D, principle can produce the model of almost any shape.
But machining accuracy is that restriction 3D printing technique is by the bottleneck applied further.Laser powder sinter molding receives the concern of researchers in recent years.By improving the size of laser facula, formed precision can be improved.Can be similar to and think that laser spot size is exactly its shaping full accuracy.But along with the development of micro-nano precision manufactureing, the formed precision of existing laser sintering and moulding equipment still can not meet precision element, as the requirement of accurate biological support, space flight and aviation precision instrument and photoelectric cell etc.Such as, biological support formed precision generally at 200um to 10nm, thus will form micro-nano structure on surface, to meet the requirements such as cell adherence on microcosmic, differentiation, increment.Based on this, can the formed precision that improve 3D printing further become the key that can it be applied to the higher field of instructions for use.
Summary of the invention
The purpose of this utility model is the shortcoming and defect overcoming above-mentioned prior art, provides a kind of structure is simple, formed precision is high nanoscale parts laser sintering and moulding method and device.Compared with the existing parts printed based on 3D, the parts prepared by the present invention have nanoscale formed precision, and manufacture, control simple and easy to do, can expand the application that 3D prints parts.
The utility model is achieved through the following technical solutions:
A kind of nanoscale parts laser sintering and moulding device, comprises mixing sampling system 1, aerodynamics lens 2, confocal laser device group 3 and workbench 4;
Described mixing sampling system 1 connects aerodynamics lens 2, and aerodynamics lens 2 are positioned at above workbench 4;
Described mixing sampling system 1 comprises a cushion chamber 1-6, and the madial wall of this cushion chamber 1-6 cavity from top to bottom shrinks gradually, or arc-shaped transition between the madial wall of cushion chamber 1-6 and interior diapire;
Described confocal laser device group 3 is between aerodynamics lens 2 and workbench 4.
Described mixing sampling system 1 also comprises the sample introduction mechanism, the hybrid chamber 1-5 for the formation of aerosol stream that connect successively;
Described sample introduction mechanism is divided into two to export branch road in parallel, includes the source of the gas 1-1 and flow control valve 1-2 that connect successively in these two branch roads;
These two branch roads, arrange powder storage chamber 1-4 between the flow control valve 1-2 of one of them branch road and hybrid chamber 1-5, between the flow control valve 1-2 and hybrid chamber 1-5 of another one branch road, arrange flowmeter 1-3;
Connect hybrid chamber 1-5 after the outlet parallel connection of described sample introduction mechanism two branch roads, hybrid chamber 1-5 connects cushion chamber 1-6 by pipeline again.
Described cushion chamber 1-6 is arranged on the upper end of aerodynamics lens 2.
Described aerodynamics lens 2 comprise cylindrical chamber 2-1 and are arranged on the nozzle 2-3 of cylindrical chamber 2-1 bottom;
In cylindrical chamber 2-1, set of lenses 2-2 is set, this set of lenses 2-2 by multiple spaced, along cylindrical chamber 2-1 axially-aligned and the lens be fixed in cylindrical chamber 2-1 form.
Each lens of described set of lenses 2-2 all have and converges hole, each convergence axis in hole and the axis coaxle of nozzle 2-3.
Cylindrical chamber 2-1 and horizontal plane; Described workbench 4 is movable platform, can in X, Y or Z-direction motion.
The aperture in the convergence hole on each lens is different or identical.
A kind of laser sintering and moulding method of nanoscale parts is as follows:
(1) start the source of the gas 1-1 of two branch roads, source of the gas 1-1 range of flow is adjusted to 2-20L/min, and the aerosol stream reynolds number range that correspondence enters aerodynamics lens 2 is 200-1000;
(2) gas entering two branch roads carries the powder of nanometric particles in the 1-4 of powder storage chamber, is entered in hybrid chamber 1-5 and fully mixes, and enter cushion chamber 1-6 again after forming nano granule aerosol by pipeline;
(3) aerosol cushions in cushion chamber 1-6, and mixes further, now flow velocity and pressure drop;
(4) then, aerosol stream enters aerodynamics lens 2 after cushioning in cushion chamber 1-6, and it is the laminar fluid of 200-1000 that aerosol flows to into forming Reynolds number before aerodynamics lens 2;
(5) the convergence hole of aerosol flow successively on the lens of cylindrical chamber 2-1; The nano particle of different-grain diameter scope is by wherein one-level convergence hole convergence, and the grain flow after converging keeps flowing along the axis direction of cylindrical chamber 2-1, and sprays through nozzle 2-3, still keeps axis direction;
(6) the nano particle stream cladding after fusing, on sintered base plate 4-1, solidifies rear and substrate bonding;
(7) formation of two-dimentional pattern: adjusting operating platform 4 moves in X, Y plane, receives follow-up nano particle, nano particle cladding, solidifies the two-dimentional pattern of rear formation;
(8) formation of 3 d part model: workbench 4 moves on Z axis, follow-up nano particle cladding is in step 7 on two-dimentional pattern, successively stacking, obtains 3 d part model; Thus complete the laser sintering and moulding of nanoscale parts.
As mentioned above.Grain flow after converging keeps flowing along the axis direction of cylindrical chamber 2-1, and spray through nozzle 2-3, still keep axis direction, now by the multiple confocal point of laser array 3 laser instrument, focus on nano particle trajectory mark and adjacent to sintered base plate surface 4-1 top, now, nano particle is heated to more than fusing point by laser array 3.
The utility model, relative to prior art, has following advantage and effect:
By mixing the concrete structure combination of sampling system 1, aerodynamics lens 2 and confocal laser device group 3, changing original laser sintering and moulding equipment and putting forward high-precision thinking.
If under prior art conditions, for improving laser spot diameter further, then can meet that technical difficulty is high, high in cost of production restriction.And this device is by adding aerodynamics lens arrangement and mixing sampling system 1 etc., and other improving, can powder precision be improved to nanoscale significantly, relieve the restriction of laser spot size.
Compared with existing photoelectric elements equipment, this equipment eta particle is unidirectional to be transported, and molten drop cladding position is controlled.
This equipment and technology means are simple and easy to do, equipment can modularized design, production, there is positive technique effect and good market application foreground.
Accompanying drawing explanation
Fig. 1 is the utility model nanoscale parts laser sintering and moulding apparatus structure schematic diagram.
Fig. 2 is Fig. 1 lens group structure schematic diagram.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is more specifically described in detail.
Embodiment
As shown in Figure 1, 2.A kind of nanoscale parts of the utility model laser sintering and moulding device, comprises mixing sampling system 1, aerodynamics lens 2, confocal laser device group 3 and workbench 4; Workbench 4 adopts high-accuracy workbench, and it has and the mobile accuracy of nanoscale parts formed precision with the order of magnitude.
Described mixing sampling system 1 connects aerodynamics lens 2, and aerodynamics lens 2 are positioned at above workbench 4;
Described mixing sampling system 1 comprises a cushion chamber 1-6, and the madial wall of this cushion chamber 1-6 cavity from top to bottom shrinks gradually, or arc-shaped transition between the madial wall of cushion chamber 1-6 and interior diapire;
Described confocal laser device group 3 is between aerodynamics lens 2 and workbench 4.
Described mixing sampling system 1 also comprises the sample introduction mechanism, the hybrid chamber 1-5 for the formation of aerosol stream that connect successively;
Described sample introduction mechanism is divided into two to export branch road in parallel, includes the source of the gas 1-1 and flow control valve 1-2 that connect successively in these two branch roads; Source of the gas 1-1 should adopt helium, and displacement range contains 2-20L/min.
These two branch roads, arrange powder storage chamber 1-4 between the flow control valve 1-2 of one of them branch road and hybrid chamber 1-5, the flow of this branch road is 2-5L/min; Between the flow control valve 1-2 and hybrid chamber 1-5 of another one branch road, arrange flowmeter 1-3, the displacement range of this branch road contains 2-20L/min;
Connect hybrid chamber 1-5 after the outlet parallel connection of described sample introduction mechanism two branch roads, hybrid chamber 1-5 connects cushion chamber 1-6 by pipeline again.
Described cushion chamber 1-6 is arranged on the upper end of aerodynamics lens 2.
Described aerodynamics lens 2 comprise cylindrical chamber 2-1 and are arranged on the nozzle 2-3 of cylindrical chamber 2-1 bottom;
In cylindrical chamber 2-1, set of lenses 2-2 is set, this set of lenses 2-2 by multiple spaced, along cylindrical chamber 2-1 axially-aligned and the lens be fixed in cylindrical chamber 2-1 form.Lens have 3-5 level, and the internal diameter of cylindrical chamber 2-1 is about 25mm.
Each lens of described set of lenses 2-2 all have and converges hole, each convergence axis in hole and the axis coaxle of nozzle 2-3.
Cylindrical chamber 2-1 and horizontal plane; Described workbench 4 is movable platform, can in X, Y or Z-direction motion.
According to real work needs, the aperture in the convergence hole on these each lens is different or identical.
The laser sintering and moulding method of nanoscale parts is by following realization:
First powder of nanometric particles is placed in powder storage chamber 1-4, this powder is carried to hybrid chamber 1-5 through gas, and fully mixes with another branch road gas; Gained aerosol flows to into cushion chamber 1-6, and gas mixes further with powder of nanometric particles, and pressure and flow velocity reduce, and obtain the fluid that Reynolds number is 200-700; Fluid further with laminar flow enter by multiple spaced, along cylindrical chamber 2-1 axially-aligned and the lens be fixed in cylindrical chamber 2-1, through the convergence hole on each lens and after focusing on, with the streamed ejection of individual particle; Particle is received by sintering matrix workbench 4 scribbling vacuum grease, and is melted by the laser instrument of confocal laser device group 3; By the movement of workbench 4 in X, Y-direction, the two-dimentional pattern with nanoscale formed precision can be obtained; By moving in Z-direction, successively stacking acquisition the parts of nanoscale formed precision can be had.
Below be further described in detail:
(1) start the source of the gas 1-1 of two branch roads, source of the gas 1-1 range of flow is adjusted to 2-20L/min, and the aerosol stream reynolds number range that correspondence enters aerodynamics lens 2 is 200-1000;
(2) gas entering two branch roads carries the powder of nanometric particles in the 1-4 of powder storage chamber, is entered in hybrid chamber 1-5 and fully mixes, and enter cushion chamber 1-6 again after forming nano granule aerosol by pipeline;
(3) aerosol cushions in cushion chamber 1-6, and mixes further, now flow velocity and pressure drop; The internal diameter of cushion chamber 1-6 is about 75mm.
(4) then, aerosol stream enters aerodynamics lens 2 after cushioning in cushion chamber 1-6, and it is the laminar fluid of 200-1000 that aerosol flows to into forming Reynolds number before aerodynamics lens 2;
(5) the convergence hole of aerosol flow successively on the lens of cylindrical chamber 2-1; The nano particle of different-grain diameter scope is by wherein one-level convergence hole convergence, and the grain flow after converging keeps flowing along the axis direction of cylindrical chamber 2-1, and sprays through nozzle 2-3, still keeps axis direction;
(6) the nano particle stream cladding after fusing, on sintered base plate 4-1, solidifies rear and substrate bonding;
(7) formation of two-dimentional pattern: adjusting operating platform 4 moves in X, Y plane, receives follow-up nano particle, nano particle cladding, solidifies the two-dimentional pattern of rear formation;
(8) formation of 3 d part model: workbench 4 moves on Z axis, follow-up nano particle cladding is in step 7 on two-dimentional pattern, successively stacking, obtains 3 d part model; Thus complete the laser sintering and moulding of nanoscale parts.
As mentioned above.Grain flow after converging keeps flowing along the axis direction of cylindrical chamber 2-1, and spray through nozzle 2-3, still keep axis direction, now by the multiple confocal point of laser array 3 laser instrument, focus on nano particle trajectory mark and adjacent to sintered base plate surface 4-1 top, now, nano particle is heated to more than fusing point by laser array 3.
As mentioned above, just the utility model can be realized preferably.
Embodiment of the present utility model is not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present utility model and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (8)
1. a nanoscale parts laser sintering and moulding device, is characterized in that: comprise mixing sampling system (1), aerodynamics lens (2), confocal laser device group (3) and workbench (4);
Described mixing sampling system (1) connects aerodynamics lens (2), and aerodynamics lens (2) are positioned at workbench (4) top;
Described mixing sampling system (1) comprises a cushion chamber (1-6), the madial wall of this cushion chamber (1-6) cavity from top to bottom shrinks gradually, or arc-shaped transition between the madial wall of cushion chamber (1-6) and interior diapire;
Described confocal laser device group (3) is positioned between aerodynamics lens (2) and workbench (4).
2. nanoscale parts laser sintering and moulding device according to claim 1, is characterized in that: described mixing sampling system (1) also comprises the sample introduction mechanism, the hybrid chamber (1-5) for the formation of aerosol stream that connect successively;
Described sample introduction mechanism is divided into two to export branch road in parallel, includes the source of the gas (1-1) connected successively and flow control valve (1-2) in these two branch roads;
These two branch roads, between the flow control valve (1-2) of one of them branch road and hybrid chamber (1-5), powder storage chamber (1-4) is set, flowmeter (1-3) is set between the flow control valve (1-2) and hybrid chamber (1-5) of another one branch road.
3. nanoscale parts laser sintering and moulding device according to claim 2, it is characterized in that: connect hybrid chamber (1-5) after the outlet parallel connection of described sample introduction mechanism two branch roads, hybrid chamber (1-5) connects cushion chamber (1-6) by pipeline again.
4. nanoscale parts laser sintering and moulding device according to any one of claim 1 to 3, is characterized in that: described cushion chamber (1-6) is arranged on the upper end of aerodynamics lens (2).
5. nanoscale parts laser sintering and moulding device according to claim 4, is characterized in that: described aerodynamics lens (2) comprise cylindrical chamber (2-1) and are arranged on the nozzle (2-3) of cylindrical chamber (2-1) bottom;
Set of lenses (2-2) is set in cylindrical chamber (2-1), this set of lenses (2-2) by multiple spaced, along cylindrical chamber (2-1) axially-aligned and the lens be fixed in cylindrical chamber (2-1) form.
6. nanoscale parts laser sintering and moulding device according to claim 5, is characterized in that: each lens of described set of lenses (2-2) all have and converges hole, each convergence axis in hole and the axis coaxle of nozzle (2-3).
7. nanoscale parts laser sintering and moulding device according to claim 5, is characterized in that: cylindrical chamber (2-1) and horizontal plane; Described workbench (4) is movable platform, can in X, Y or Z-direction motion.
8. nanoscale parts laser sintering and moulding device according to claim 5, is characterized in that: the aperture in the convergence hole on each lens is different or identical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420736015.XU CN204278542U (en) | 2014-11-27 | 2014-11-27 | A kind of nanoscale parts laser sintering and moulding device |
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| CN201420736015.XU CN204278542U (en) | 2014-11-27 | 2014-11-27 | A kind of nanoscale parts laser sintering and moulding device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385605A (en) * | 2014-11-27 | 2015-03-04 | 华南理工大学 | Nanoscale component laser sintering molding method and device |
| CN104890240A (en) * | 2015-05-23 | 2015-09-09 | 哈尔滨工业大学 | Nanopowder laser selective melting additive manufacturing system and method |
| CN109789630A (en) * | 2016-10-10 | 2019-05-21 | 惠普发展公司，有限责任合伙企业 | Micro-structure transfer system |
| CN114206570A (en) * | 2019-06-12 | 2022-03-18 | 奥本大学 | Novel additive nano-manufacturing system and method |
-
2014
- 2014-11-27 CN CN201420736015.XU patent/CN204278542U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385605A (en) * | 2014-11-27 | 2015-03-04 | 华南理工大学 | Nanoscale component laser sintering molding method and device |
| CN104890240A (en) * | 2015-05-23 | 2015-09-09 | 哈尔滨工业大学 | Nanopowder laser selective melting additive manufacturing system and method |
| CN109789630A (en) * | 2016-10-10 | 2019-05-21 | 惠普发展公司，有限责任合伙企业 | Micro-structure transfer system |
| US10978327B2 (en) | 2016-10-10 | 2021-04-13 | Hewlett-Packard Development Company, L.P. | Micro-structure transfer system |
| CN114206570A (en) * | 2019-06-12 | 2022-03-18 | 奥本大学 | Novel additive nano-manufacturing system and method |
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Granted publication date: 20150422 Termination date: 20171127 |
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