CN110919000B - Plug-in pneumatic injection device capable of being quickly disassembled and assembled - Google Patents
Plug-in pneumatic injection device capable of being quickly disassembled and assembled Download PDFInfo
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- CN110919000B CN110919000B CN201911175468.3A CN201911175468A CN110919000B CN 110919000 B CN110919000 B CN 110919000B CN 201911175468 A CN201911175468 A CN 201911175468A CN 110919000 B CN110919000 B CN 110919000B
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- nozzle
- disc
- path inlet
- inlet
- end cover
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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
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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
- B22F3/003—Apparatus, e.g. furnaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Abstract
The invention discloses a plug-in pneumatic injection device capable of being quickly disassembled and assembled, and belongs to the technical field of additive manufacturing. The device comprises a box body, a temperature sensor interface, an adjusting screw interface, an exhaust port, an air inlet, a sealing end cover, a main air path inlet, an air flow adjusting disc, an auxiliary air path inlet, a liquid storage cavity, a bottom sealing disc, a nozzle and a sprayer shell. In 3D printing, to the stable situation of unable continuous maintenance pressure pulse, this injection apparatus as required can realize the stable effect that generates of liquid drop through the regulatory function of main supplementary gas circuit, effectively improves the shaping precision, guarantees the original performance of material, satisfies the operating requirement under the different conditions.
Description
Technical Field
The invention relates to an insertion type pneumatic injection device capable of being quickly assembled and disassembled in droplet injection, and belongs to the technical field of additive manufacturing.
Background
Metal droplet jetting additive manufacturing technology is a 3D printing technology developed based on the principle of inkjet printing. Based on the forming principle of 'discrete-superposition', liquid metal is controlled to generate uniform droplets, and then the droplets are deposited at specific positions of a substrate through the movement of the substrate, so that the droplets are piled up layer by layer point to form a complex three-dimensional solid structure. The technology has the advantages of simple process flow, low production cost, high density of formed parts, good mechanical property and the like, has wide application prospect in the fields of rapid forming of tiny metal parts, printing of flexible circuits, microelectronic packaging and the like, and particularly has obvious application advantages in the aspects of maintenance and replacement of tiny parts in special systems, manufacture of parts with complex structures, low material utilization rate or small batches and the like.
The existing non-metallic material droplet spraying technology is mature, but the characteristics of high melting point, high viscosity, high surface tension and the like of a metallic material make the existing non-metallic material spraying device and the control method difficult to be directly used for spraying and deposition forming of the metallic material. In order to increase the compactness of the formed part and reduce the surface roughness in the metal droplet jet additive manufacturing technology, a stable generating device is needed to generate uniform and stable metal droplets so as to improve the quality of the formed part.
At present, in the metal droplet jetting additive manufacturing technology, the forming process is limited by the stability of the generated metal droplets, so that the quality of a formed part is affected, and the development of the metal droplet jetting additive manufacturing technology is limited.
Therefore, the plug-in pneumatic injection device capable of being quickly assembled and disassembled has important scientific research value.
Disclosure of Invention
Aiming at the problems in the background art, the invention provides a quickly detachable plug-in pneumatic injection device, which can realize the functions of stable and adjustable pressure pulse during injection, quick replacement of the device, wide range of used materials and the like, and has important significance for improving the stability of generated liquid drops in actual production.
The technical scheme adopted by the invention is a plug-in type pneumatic injection device capable of being quickly disassembled and assembled, which comprises a sealing box body (1), a temperature sensor interface (2), an adjusting screw interface (3), an exhaust port (4), an air inlet (5), a sealing end cover (6), a main air path inlet (7), an air flow adjusting disc (8), an auxiliary air path inlet (9), a liquid storage cavity (10), a bottom sealing disc (11), a nozzle (12) and a sprayer housing (13).
The relation and the function among all parts of the device are as follows, the sealed box body (1) is an external box body structure of the device, and all components are arranged in the sealed box body (1) so as to ensure that the interior of the sealed box body (1) is in an oxygen-free environment and the temperature is constant; the upper part and the lower part of the sprayer shell (13) are respectively connected with the sealing end cover (6) and the bottom sealing disc (11) through threads; the upper part of the sealing end cover (6) is provided with a temperature sensor interface (2), an adjusting screw interface (3), and the side surface is provided with an exhaust port (4) and an air inlet (5); an airflow adjusting disc (8) is fixedly connected with the inside of the nozzle shell (13) through threads, a liquid storage cavity (10) is formed by connecting the nozzle shell (13) and the airflow adjusting disc (8), and a main gas path inlet (7) and an auxiliary gas path inlet (9) are arranged on the airflow adjusting disc (8); the bottom sealing disc (11) is provided with a nozzle (12).
A plug-in type pneumatic injection device capable of being quickly disassembled and assembled is characterized in that the interior of the device is a sealed environment, liquid metal is stored in a liquid storage cavity (10), and a sprayer shell (13) is in threaded connection with a sealing end cover (6) and a bottom sealing disc (11) respectively to be sealed; inert gas with the pressure changing in a pulsating mode is introduced from the gas inlet (5), the pulse gas pressure is divided into two parts through the gas flow adjusting disc (8), one part provides pressure drive for the main gas path inlet (7), and liquid metal is extruded to flow out of the nozzle (12); the other part enters from the auxiliary gas path inlet (9) to provide downward extrusion force for the liquid metal in the cavity, so that the liquid flowing out near the nozzle (12) can be supplemented in time, and the success of the next spraying can be ensured.
The generation mode of the invention is based on the generation mode of the pneumatic micro-droplets, and the pressure balance and stable ejection in the cavity are ensured by dividing the pulse air pressure into two air paths.
Compared with the prior art, the invention has the following beneficial effects.
1. The invention has reasonable design, simple structure and convenient processing and installation, and is beneficial to improving the service life and the spraying effect of the whole device.
2. The service life of the device is long. The nozzle structure is in independent threaded connection, is convenient to replace, can effectively avoid the problems of blockage and the like of the device, and is convenient to maintain.
3. The device has reasonable design. The main and auxiliary air paths respectively realize pressure driving and liquid supplement, so that the stability of the performance of the device in long-time working is ensured, and the printing precision is very important to improve.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partial schematic view of the present invention.
In the figure: 1. the device comprises a sealed box body, 2, a temperature sensor interface, 3, an adjusting screw interface, 4, an exhaust port, 5, an air inlet, 6, a sealing end cover, 7, a main air path inlet, 8, an air flow adjusting disc, 9, an auxiliary air path inlet, 10, a liquid storage cavity, 11, a bottom sealing disc, 12, a nozzle and 13, and a sprayer shell.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the whole device comprises a sealed box body (1), a temperature sensor interface (2), an adjusting screw interface (3), an exhaust port (4), an air inlet (5), a sealing end cover (6), a main air path inlet (7), an air flow adjusting disc (8), an auxiliary air path inlet (9), a liquid storage cavity (10), a bottom sealing disc (11), a nozzle (12) and a sprayer housing (13).
The specific working process of the device is as follows: the inside of the sealed box body (1) is kept to be a closed environment and filled with inert gas to prevent metal oxidation, and meanwhile, the inside temperature is kept unchanged; the upper part of the sprayer shell (13) is sealed by a sealing end cover through threaded connection, the upper part of the sealing end cover (6) is provided with a temperature sensor inlet (2) so as to monitor the temperature in the cavity in real time, an adjusting screw connector (3) is arranged to adjust the gas output of the gas outlet (4), the gas outlet (4) is used for discharging redundant gas, and the gas inlet (5) provides pulse air pressure; the lower part of the sprayer shell (13) is connected with a bottom sealing disc (11) through threads for sealing, and the bottom is provided with a nozzle for generating metal droplets; the air flow adjusting disc (8) is fixed with the spray head shell (13) through threaded connection, and a liquid storage cavity (10) between the spray head shell (13) and the air flow adjusting disc (8) mainly stores liquid metal; the pulse air pressure enters the cavity through the air inlet (5), and after passing through the air flow adjusting disc (8), one part of the pulse air pressure generates extrusion liquid drops through the main air path inlet (7), and the other part of the pulse air pressure realizes the timely supplement of liquid near the nozzle opening through the auxiliary air path inlet (9). Wherein:
a) to reduce the energy dissipation during operation of the pneumatic nozzle, the nozzle (12) is machined with a cone angle of less than 90 °.
b) Since the invention requires a size that ensures droplet formation, there is a high demand for the diameter of the nozzle (12), the diameter of the nozzle (12) being between 100 μm and 500. mu.m. The arrangement of the bottom sealing disc (11) can facilitate the replacement of nozzles (12) of different sizes, and can also avoid the problems of difficult treatment and the like when the nozzles (12) are blocked.
c) In order to ensure the service life of the sealing end cover (6), the sprayer housing (13) and the nozzle (11), the materials are all processed by a high-temperature resistant graphite crucible.
Claims (6)
1. The utility model provides a bayonet pneumatic injection apparatus that can swiftly dismantle which characterized in that: the device mainly includes: the device comprises a sealing box body (1), a temperature sensor interface (2), an adjusting screw interface (3), an exhaust port (4), an air inlet (5), a sealing end cover (6), a main air path inlet (7), an air flow adjusting disc (8), an auxiliary air path inlet (9), a liquid storage cavity (10), a bottom sealing disc (11), a nozzle (12) and a sprayer shell (13);
the sealed box body (1) is an external box body structure of the device, and all components are arranged in the sealed box body (1) so as to ensure that the interior of the sealed box body (1) is in an oxygen-free environment and has constant temperature; the upper part and the lower part of the sprayer shell (13) are respectively connected with a sealing end cover (6) and a bottom sealing disc (11) through threads, the upper part of the sealing end cover (6) is provided with a temperature sensor interface (2), an adjusting screw interface (3), and the side surface is provided with an exhaust port (4) and an air inlet (5); the spray head shell (13) is internally connected with the fixed airflow adjusting disc (8) through threads, the spray head shell (13) and the airflow adjusting disc (8) are connected to form a liquid storage cavity (10), the airflow adjusting disc (8) is provided with a main air path inlet (7) and an auxiliary air path inlet (9), and a nozzle (12) is arranged on a bottom sealing disc (11).
2. A quick disconnect plug-in pneumatic jetting tool as claimed in claim 1, further comprising: the inside sealed environment that is of the device stores liquid metal through stock solution chamber (10), and shower nozzle shell (13) seals with end cover (6) and bottom sealed dish (11) threaded connection respectively.
3. A quick disconnect plug-in pneumatic jetting tool as claimed in claim 1, further comprising: inert gas with the pressure changing in a pulsating mode is introduced from the gas inlet (5), the pulse gas pressure is divided into two parts through the gas flow adjusting disc (8), one part provides pressure drive for the main gas path inlet (7), and liquid metal is extruded to flow out of the nozzle (12); the other part enters from the auxiliary gas path inlet (9) to provide downward extrusion force for the liquid metal in the cavity, so that the liquid flowing out near the nozzle (12) can be supplemented in time, and the success of the next spraying can be ensured.
4. A quick disconnect plug-in pneumatic jetting tool as claimed in claim 1, further comprising: the taper angle of the nozzle (12) is less than 90 deg.
5. A quick disconnect plug-in pneumatic jetting tool as claimed in claim 1, further comprising: the diameter of the nozzle (12) is 100-500 μm.
6. A quick disconnect plug-in pneumatic jetting tool as claimed in claim 1, further comprising: the sealing end cover (6), the sprayer housing (13) and the nozzle (12) are processed by a high-temperature resistant graphite crucible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911175468.3A CN110919000B (en) | 2019-11-26 | 2019-11-26 | Plug-in pneumatic injection device capable of being quickly disassembled and assembled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911175468.3A CN110919000B (en) | 2019-11-26 | 2019-11-26 | Plug-in pneumatic injection device capable of being quickly disassembled and assembled |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110919000A CN110919000A (en) | 2020-03-27 |
| CN110919000B true CN110919000B (en) | 2021-11-05 |
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| CN201911175468.3A Active CN110919000B (en) | 2019-11-26 | 2019-11-26 | Plug-in pneumatic injection device capable of being quickly disassembled and assembled |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112605391B (en) * | 2020-12-10 | 2022-09-02 | 西北工业大学 | Gas-liquid channel separation type uniform metal droplet stable injection device |
| CN112916857B (en) * | 2021-01-16 | 2022-10-11 | 北京工业大学 | On-demand pneumatic jetting device and method for generating small-size metal droplets through gas phase assistance |
| CN114523663B (en) * | 2022-02-18 | 2023-04-07 | 南通理工学院 | Constant-temperature discharging 3D printing nozzle device with quick plug structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7758171B2 (en) * | 2007-03-19 | 2010-07-20 | Eastman Kodak Company | Aerodynamic error reduction for liquid drop emitters |
| CN106862567A (en) * | 2015-12-13 | 2017-06-20 | 李晓波 | Injection shaping Novel atomizer |
| US10751799B2 (en) * | 2016-03-03 | 2020-08-25 | Desktop Metal, Inc. | Magnetohydrodynamic deposition rate control for metal manufacturing |
| CN106513674B (en) * | 2016-09-20 | 2018-08-24 | 南京航空航天大学 | The protection gas circulation filter and its optimization method of 3D printing metal powder bed shaped cavity |
| CN107030292A (en) * | 2017-05-03 | 2017-08-11 | 江苏天楹环保能源成套设备有限公司 | A kind of multistage cooling prepares the plasma atomising device of metal dust |
| CN107042310A (en) * | 2017-05-05 | 2017-08-15 | 广东工业大学 | A kind of gas atomizing nozzle |
| CN109047767B (en) * | 2018-08-27 | 2021-03-16 | 北京工业大学 | Auxiliary pneumatic on-demand jet device for reducing diameter of metal droplets |
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