CN109590474A - A kind of nozzle air pressure regulating device that can improve sealing performance - Google Patents
A kind of nozzle air pressure regulating device that can improve sealing performance Download PDFInfo
- Publication number
- CN109590474A CN109590474A CN201811538192.6A CN201811538192A CN109590474A CN 109590474 A CN109590474 A CN 109590474A CN 201811538192 A CN201811538192 A CN 201811538192A CN 109590474 A CN109590474 A CN 109590474A
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- CN
- China
- Prior art keywords
- spray
- air pressure
- graphite crucible
- sealing performance
- nozzle
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/115—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by spraying molten metal, i.e. spray sintering, spray casting
-
- 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
Abstract
The invention discloses the nozzle air pressure regulating devices that one kind can improve sealing performance, belong to increases material manufacturing technology field.It include: spray nozzle device, feeder two large divisions, spray nozzle device is mainly made of graphite crucible, including lower sealing road, sensor cavity, lower Positioning holes, spray chamber, graphite crucible, spray orifice；Feeder is mainly made of top gas supply lid, including air inlet, adjusting screw rod, gas outlet, upper location hole, sensor threads hole, upper sealing road.In high-temperature metal droplet ejection process, for the situation of device poor sealing performance and outlet air pressure adjustment difficulty, the pneumatic type need based jet device can pass through simple and fast sealing means, to realize the effect of steady pressure in spray chamber, outlet pressure size can also accurately be adjusted, can satisfy the job requirement under different condition.
Description
Technical field
The present invention relates to a kind of nozzle air pressure regulating devices that can be used in droplet ejection process improving sealing performance, belong to
Increases material manufacturing technology field.
Background technique
Metal droplet injection increases material manufacturing technology is a kind of 3D printing technique based on the development of inkjet printing principle.It is based on
The Forming Theory of " discrete-superposition " first controls liquid metal and generates uniform droplet, then makes droplet deposition by the movement of substrate
In the specific position of substrate, realize that point-by-point, accumulation forms complicated 3D solid structure layer by layer.The technology has process flow
Simply, the advantages that production cost is low and drip molding consistency is high, mechanical property is good, in minute metallic part Quick-forming, flexibility
The fields such as circuit printing, microelectronics Packaging all have broad application prospects, the dimension of small parts especially in extraordinary system
It repairs and replaces, and structure is complicated, stock utilization is low or the components of small lot manufacture etc. has significantly using excellent
Gesture.
Existing nonmetallic materials droplet ejection technology have been relatively mature, but metal material fusing point is high, sticky and surface
The characteristics such as tension is big, so that existing nonmetallic materials injection apparatus and control method are difficult to be directly used in the injection of metal material
And deposition formation.Existing pneumatic type need based jet device is due to needing to carry out under the high temperature conditions, so that many cryogenic conditions
Under sealing and regulating device can not normal use, therefore air-proof condition for device and material selection propose higher want
It asks.In order to improve the consistency of drip molding in metal droplet injection increases material manufacturing technology, reduce its surface roughness, need into one
The accuracy for improving experimental provision is walked, the regulative mode that control generates parameter must be accomplished accurately controllably, and then can mention
Height generates smaller and uniform and stable metal droplet, to improve the quality of drip molding.
Currently, metal droplet injection increases material manufacturing technology in, pneumatic type generating mode due to higher to sealing requirements,
It is required to the good and easy to adjust device of sealing effect, to accelerate metal droplet injection to improve the quality of drip molding and increase
The development of material manufacturing technology.
Therefore, the present invention proposes a kind of for improving the nozzle air pressure regulating device of sealing performance in droplet ejection process.
Summary of the invention
For the problems in background technique, the present invention provides a kind of for improving sealing performance in droplet ejection process
Nozzle air pressure regulating device, the device can be completed to improve leakproofness when pneumatic device injection and can facilitate adjusting outlet pressure
Function, be of great significance for overcoming high-temperature gas pressure to adjust the problems such as difficult in actual production, device is easy to operate,
Use scope is wide, and research application value with higher, the technical scheme adopted is as follows:
The technical scheme adopted by the invention is as follows a kind of for improving the nozzle air pressure of sealing performance in droplet ejection process
Regulating device, including spray nozzle device, feeder two large divisions, spray nozzle device include lower sealing road (7), sensor cavity (8),
Lower Positioning holes (9), spray chamber (10), graphite crucible (11) and spray orifice (12)；Feeder is top gas supply lid (13), top gas supply
Covering (13) includes air inlet (1), adjusting screw rod (2), gas outlet (3), upper location hole (4), sensor threads hole (5) and upper sealing
Road (6).
Graphite crucible (11) is bolted will be fixed under four on four upper location hole (4) and top gas supply lid (13)
Position hole (9) is fixed, and upper sealing road (6) setting supplies the inner wall of lid (13) on top, and lower sealing road (7) setting supplies on top covers
(13) inner wall；Upper sealing road (6) is corresponding with lower sealing road (7).
Upper sealing road (6) and lower sealing road (7) between graphite crucible (11) and top gas supply lid (13) joint face are injected
Refractory seals glue；Spray chamber (10) setting is pyramidal structure, spray chamber in the centre of graphite crucible (11), the section of spray chamber (10)
(10) opposite with air inlet (1)；Spray orifice (12) is located at the bottom boss center of graphite crucible (11).The inside of graphite crucible (11)
Equipped with individual sensor cavity (8), for placing temperature sensor in sensor cavity (8).Top gas supply lid (13) is equipped with
Sensor threads hole (5) is used for fixed temperature sensor.Air inlet (1) is for connecting air inlet pipe and being connected to gas outlet (3), out
Port (3) is matched with adjusting screw rod (2), realizes the big minor adjustment of gas output.
In the course of work, pneumatic pressure pulses, lower part spray are applied to the liquid high-temperature metal in spray chamber (10) by upper inlet port
Hole (12) exit liquid, which is extruded, overcomes the factors such as surface tension to form metal droplet, completes course of injection.Meanwhile gas outlet
(3) cooperate with adjusting screw rod (2), to adjust gas output size, the pressure that can satisfy under different experimental conditions is adjusted.Top is set
There is sensor access port (5) that the temperature change in spray chamber (10) can be observed in time.
In metal droplet injection increasing material manufacturing, the leakproofness of pneumatic device and material property are proposed more under hot conditions
High requirement, the need based jet device pass through the refractory seals glue sealing means being simple and efficient and air pressure adjustment resistant to high temperature dress
It sets, Lai Shixian droplet stablizes the effect of injection, effectively increases formed precision, can satisfy the job requirement under different condition.
Compared with prior art, the present invention has the advantages that.
1, invention design is reasonable, structure is simple, easy to process and installation, helps to improve the service life of whole device
And jeting effect.
2, device is able to solve the problems such as existing leakproofness under hot conditions is poor, and reasonable structure design both ensure that close
Feng Xing, but it is easy to operate, convenient for the use of device.
3, nozzle arrangements are connect by bolt and sealant with feeder, and the structure of design is conveniently replaceable, can be effective
The problems such as avoiding device blocks, it is easy to repair.
4, the present apparatus has verified that inside cavity structure is affected to the variation of pneumatic pressure pulses early period, therefore in the present apparatus
Setting temperature sensor will be placed in specific sensor cavity body, reduce the intracorporal air pressure fluctuation of molten metal chamber, avoid
Skewness after drop ejection.
5, the increased adjusting screw rod in gas outlet can bear the air pressure adjustment work under hot environment, improve service life.
Detailed description of the invention
Fig. 1 is whole structural schematic diagram of the invention.
Fig. 2 is feeder schematic diagram of the invention.
Fig. 3 is spray nozzle device schematic diagram of the invention.
Fig. 4 is spray orifice partial schematic diagram of the invention.
In figure: being sealed on 5. sensor threads hole 6. of location hole on 1. air inlet, 2. adjusting screw rod, 3. gas outlet 4.
Lower 8. sensor cavity of sealing road, 9. lower Positioning holes, 10. spray chamber, 11. crucible, the 12. spray orifice 13 gas supply lid in road 7..
Specific embodiment
Below in conjunction with drawings and examples, the present invention is described in detail.
A) due to needing to guarantee the stable gas pressure of inside cavity, there is very high requirement to leakproofness, while to meet
It works under the high temperature conditions, so being sealed in such a way that bolt fastening and sealant match.
B) to reduce the energy dissipation in the pneumatic sprayhead course of work, guarantee gas pressure in the stabilization of molten metal liquid level
Property, nozzle (7) cone angle processed are less than 90 °, draw ratio 1.
It c) is the service life for guaranteeing pneumatic sprayhead (5) and nozzle (7), material is stainless steel and graphite earthenware resistant to high temperature
Crucible is process.
D) to improve pneumatic sprayhead (5) jeting effect, the cavity volume of spray chamber (10) is set as diameter 20mm, height 50mm
Cylindrical cavity, the volume size of cavity can concentrate convenient for air pressure, improve ejection efficiency.
E) it is equipped with the proprietary duct of the temperature sensor that diameter is 6 millimeters inside the device nozzle spray chamber, quilt can be contacted
The molten metal of measurement, and the pressure change of inside cavity is not influenced, so as to promote the generation of drop.
Claims (6)
1. the nozzle air pressure regulating device that one kind can improve sealing performance, it is characterised in that: including spray nozzle device, feeder
Two large divisions, spray nozzle device include lower sealing road (7), sensor cavity (8), lower Positioning holes (9), spray chamber (10), graphite crucible
(11) and spray orifice (12)；Feeder is top gas supply lid (13), and top gas supply lid (13) includes air inlet (1), adjusting screw rod
(2), gas outlet (3), upper location hole (4), sensor threads hole (5) and upper sealing road (6)；
Graphite crucible (11) is bolted four lower Positioning holes on four upper location hole (4) and top gas supply lid (13)
(9) fixed, upper sealing road (6) setting supplies the inner wall of lid (13) on top, and lower sealing road (7) setting supplies lid (13) on top
Inner wall；Upper sealing road (6) is corresponding with lower sealing road (7)；
Upper sealing road (6) and lower sealing road (7) between graphite crucible (11) and top gas supply lid (13) joint face inject resistance to height
Warm sealant；In the centre of graphite crucible (11), the section of spray chamber (10) is pyramidal structure for spray chamber (10) setting, spray chamber (10) with
Air inlet (1) is opposite；Spray orifice (12) is located at the bottom boss center of graphite crucible (11)；The inside of graphite crucible (11) is equipped with single
Only sensor cavity (8), for placing temperature sensor in sensor cavity (8)；Top gas supply lid (13) is equipped with sensor
Threaded hole (5) is used for fixed temperature sensor；Air inlet (1) is for connecting air inlet pipe and being connected to gas outlet (3), gas outlet
(3) it is matched with adjusting screw rod (2), realizes the big minor adjustment of gas output.
2. the nozzle air pressure regulating device that one kind according to claim 1 can improve sealing performance, it is characterised in that: work
During work, pneumatic pressure pulses, lower part spray orifice (12) outlet are applied to the liquid high-temperature metal in spray chamber (10) by upper inlet port
Place's liquid, which is extruded, overcomes the factors such as surface tension to form metal droplet, completes course of injection；Meanwhile gas outlet (3) and adjusting
Screw rod (2) cooperation, to adjust gas output size, the pressure that can satisfy under different experimental conditions is adjusted；Top is equipped with sensor
Access port (5) can observe the temperature change in spray chamber (10) in time.
3. the nozzle air pressure regulating device that one kind according to claim 1 can improve sealing performance, it is characterised in that:
Metal droplet sprays in increasing material manufacturing, puts forward higher requirements under hot conditions to the leakproofness of pneumatic device and material property,
By refractory seals glue sealing means and air pressure regulator resistant to high temperature, Lai Shixian droplet stablizes the effect of injection.
4. the nozzle air pressure regulating device that one kind according to claim 1 can improve sealing performance, it is characterised in that: spray
Mouth (7) cone angle is less than 90 °, draw ratio 1.
5. the nozzle air pressure regulating device that one kind according to claim 1 can improve sealing performance, it is characterised in that: gas
The material of dynamic spray head (5) and nozzle (7) is that stainless steel and graphite crucible resistant to high temperature are process.
6. the nozzle air pressure regulating device that one kind according to claim 1 can improve sealing performance, it is characterised in that: spray
The cavity volume of chamber (10) is set as diameter 20mm, the cylindrical cavity of height 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538192.6A CN109590474B (en) | 2018-12-16 | 2018-12-16 | Nozzle air pressure adjusting device capable of improving sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538192.6A CN109590474B (en) | 2018-12-16 | 2018-12-16 | Nozzle air pressure adjusting device capable of improving sealing performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109590474A true CN109590474A (en) | 2019-04-09 |
| CN109590474B CN109590474B (en) | 2020-08-28 |
Family
ID=65962644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811538192.6A Active CN109590474B (en) | 2018-12-16 | 2018-12-16 | Nozzle air pressure adjusting device capable of improving sealing performance |
Country Status (1)
| Country | Link |
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| CN (1) | CN109590474B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0364424A (en) * | 1989-07-31 | 1991-03-19 | Sumitomo Electric Ind Ltd | Manufacture of aluminum-silicon-graphite alloy |
| CN101036946A (en) * | 2007-05-09 | 2007-09-19 | 哈尔滨工业大学 | Method and device for producing small solder alloys welding balls |
| US20090057957A1 (en) * | 2007-08-31 | 2009-03-05 | Tsinghua University | Apparatus for making magnesium-based carbon nanotube composite material and method for making the same |
| CN102528062A (en) * | 2012-02-29 | 2012-07-04 | 上海应用技术学院 | Full-sealed gas atomization powder preparation device capable of preventing blockage of nozzle and flow guide tube caused by metal and alloy |
| CN107486347A (en) * | 2017-07-11 | 2017-12-19 | 北京工业大学 | A kind of drive device prepared for conducting liquid droplet |
| CN108380884A (en) * | 2018-03-02 | 2018-08-10 | 陈锦华 | 3d printing device |
| CN108838399A (en) * | 2018-07-19 | 2018-11-20 | 西北工业大学 | Homogeneous metal droplet varied angle steering injection apparatus and the method for printing high inclination-angle structural member using the device |
-
2018
- 2018-12-16 CN CN201811538192.6A patent/CN109590474B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0364424A (en) * | 1989-07-31 | 1991-03-19 | Sumitomo Electric Ind Ltd | Manufacture of aluminum-silicon-graphite alloy |
| CN101036946A (en) * | 2007-05-09 | 2007-09-19 | 哈尔滨工业大学 | Method and device for producing small solder alloys welding balls |
| US20090057957A1 (en) * | 2007-08-31 | 2009-03-05 | Tsinghua University | Apparatus for making magnesium-based carbon nanotube composite material and method for making the same |
| CN102528062A (en) * | 2012-02-29 | 2012-07-04 | 上海应用技术学院 | Full-sealed gas atomization powder preparation device capable of preventing blockage of nozzle and flow guide tube caused by metal and alloy |
| CN107486347A (en) * | 2017-07-11 | 2017-12-19 | 北京工业大学 | A kind of drive device prepared for conducting liquid droplet |
| CN108380884A (en) * | 2018-03-02 | 2018-08-10 | 陈锦华 | 3d printing device |
| CN108838399A (en) * | 2018-07-19 | 2018-11-20 | 西北工业大学 | Homogeneous metal droplet varied angle steering injection apparatus and the method for printing high inclination-angle structural member using the device |
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| Publication number | Publication date |
|---|---|
| CN109590474B (en) | 2020-08-28 |
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