CN103203294A - Electromagnetic micro jet device - Google Patents
Electromagnetic micro jet device Download PDFInfo
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- CN103203294A CN103203294A CN2013101562317A CN201310156231A CN103203294A CN 103203294 A CN103203294 A CN 103203294A CN 2013101562317 A CN2013101562317 A CN 2013101562317A CN 201310156231 A CN201310156231 A CN 201310156231A CN 103203294 A CN103203294 A CN 103203294A
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Abstract
The invention discloses an electromagnetic micro jet device, and relates to a micro jet device. The electromagnetic micro jet device is suitable for jet of metal liquid as required, and is provided with an upper magnet, a jet cavity, a lower magnet, electrodes, a liquid feed pipe, a liquid feed tank, a lifting mechanism, a stepping motor and a pulse current device, wherein the upper magnet and the lower magnet are fixed on the upper surface and the lower surface of the jet cavity respectively; the jet cavity is provided with a liquid inlet and a liquid nozzle; the electrodes are arranged on the two sides of the jet cavity and stretch into the jet cavity; one end of the liquid feed pipe is communicated with an inner cavity of the jet cavity; the other end of the liquid feed pipe is communicated with the liquid feed tank; an input end of the lifting mechanism is connected with the stepping motor; an output end of the lifting mechanism is connected with the liquid feed tank; and the two ends of the pulse current device are connected with the electrodes.
Description
Technical field
The present invention relates to a kind of micro-spray device, especially relate to a kind of electromagnetism micro-spray device for the little spray of liquid metal.
Background technology
Along with the development of microelectronic packaging technology, need to use the technology of fluent material more and more in the microelectronic industry, impel the fluid micro-spray technology also to develop rapidly.The fluid micro-spray technology is a key technology in the microelectronics Packaging, and it can be constructed and form point, line, surface (coating) and various figure, is applied to chip in large quantities and fixes, encapsulates back-off and chip coating.This technology is the process of accurately distributing with a kind of controlled way convection cell, can be with the fluid of desirable amount (as solder flux, conducting resinl, epoxy resin and adhesive etc.) transfer to the correct position of workpiece (chip, electronic component etc.), to realize machinery or electric connection between the components and parts.
At present, the micro-spray device of need based jet pattern mainly contains piezoelectric type, hot bubble type, focus ultrasonic formula, air pressure drive-type and mechanical type etc.Chinese patent CN200610138558.1 discloses a kind of air pressure drive-type micro liquid jetting system, is mainly used in the reagent trace and distributes occasion, owing to adopt air pressure to drive, its frequency should not be too high, and the trace that device is not suitable for metal material sprays.Chinese patent CN201110332491.6 discloses a kind of fluid pulse injection apparatus, and system adopts pressurized self-pressure liquid to drive little spray, is applicable to pulsed micro spray irrigation system, belongs to a kind of continous way micro-spray device, is not suitable for the need based jet occasion.Chinese patent CN201110074206.5 discloses a kind of pulse micro spray irrigation system, and system adopts spring mechanism to cooperate self-pressure liquid, realizes that positive and negative crush-cutting changes, and obtains continuous little spray of liquid, can be fit to irrigate occasion continuously, but not be suitable for the need based jet occasion.
Summary of the invention
The purpose of this invention is to provide a kind of electromagnetism micro-spray device that is applicable to the metal liquid need based jet.
The present invention is provided with and puts magnet, sprays cavity, underlying magnet, electrode, feed pipe, feed tank, elevating mechanism, stepper motor and pulse current device;
On put magnet and underlying magnet and be fixed in the upper and lower surface of spraying cavity respectively; Spray cavity and be provided with liquid-inlet and fluid injector, electrode is located at and is sprayed the cavity both sides, and stretch into the injection inside cavity, feed pipe one end is communicated with the spray chamber intracoelomic cavity, the feed pipe other end is communicated with feed tank, the elevating mechanism input is connected with stepper motor, and the elevating mechanism output is connected with feed tank, and pulse current device two is terminated at electrode.
Described injection cavity can be provided with central dividing plate and the lower cover of upper cover plate, band nozzle, and central dividing plate and the lower cover of upper cover plate, band nozzle are installed together, and constitute spray chamber jointly.
Compared with the prior art, operation principle of the present invention and beneficial effect are as follows:
On put magnet and underlying magnet for generation of magnetic field, the spray chamber that sprays cavity is used for storing metal liquid to be sprayed, electrode well contacts with metal liquid.Pulse current device both positive and negative polarity is connected on the electrode, makes metal liquid pass through pulse current, determines ampere force direction according to left hand rule, makes ampere force direction towards the liquid outlet direction of spraying cavity.Feed tank provides metal liquid by feed pipe for spray chamber, and its below is provided with lifting platform, guarantees that feed tank liquid level and spray chamber height maintain an equal level, and liquid that can not is flowed out automatically from fluid injector, also can not reflux; Stepper motor is used for driving lifting platform, according to the liquid level of emitted dose compensation feed tank.
Because electric current by being subjected to the effect in magnetic field in the liquid metal process, forms and points to nozzle Ampere force outward; Under the effect of Ampere force, the metal liquid of spray nozzle front end obtains sufficient kinetic energy, forces liquid metal to eject from nozzle, finally forms liquid droplet metal.Because density metal is bigger, under certain pressure head situation, himself will flow out from nozzle, so the feed tank liquid level must remain basically stable with the spray chamber height, guarantees that metal liquid oneself can not flow out from nozzle.Simultaneously, constantly provide metal liquid in order to give spray chamber, along with the continuous ejection of liquid metal, feed tank should constantly raise highly by lifting platform, and its liquid level and spray chamber are consistent, and realizes that finally the trace as required of liquid metal sprays.
The present invention has following outstanding advantage: the driving force that (1) liquid metal sprays derives from Ampere force, directly electric energy is converted into the kinetic energy of liquid metal, drives the injection of metal liquid, has simplified the frame for movement of injection apparatus greatly; The present invention adopts the pulsed current control mode, is easy to the direct control of the aspects such as size, action time, injection frequency to driving force, and the trace that is particularly suitable for liquid metal sprays occasion, as the injection of scolding tin, the aspects such as rapid prototyping of metalwork.When (2) adopting pulse current to drive liquid droplets, stepper motor rotates corresponding angle according to the quantity of pulse, and then it is highly corresponding to drive the lifting platform rising, the lifting platform compensation has supplied the liquid level of feed tank, guaranteed the consistent of feed tank liquid level and spray chamber height, guarantee that spray chamber has stable liquid supply pressure, be convenient to the stable of little spray.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is the decomposition texture schematic diagram of the embodiment of the invention.
Fig. 3 is part-structure and the principle schematic of the embodiment of the invention.
The specific embodiment
Referring to Fig. 1～3, the embodiment of the invention is provided with puts magnet 1, injection cavity (central dividing plate 3 and the lower cover 4 that comprise upper cover plate 2, band nozzle), underlying magnet 5, electrode 7, feed pipe 8, lifting platform 9, stepper motor 10, feed tank 11 and pulse current device 12.
The central dividing plate 3 of upper cover plate 2, band nozzle and lower cover 4 are installed together and constitute spray chamber 6, and central dividing plate 3 one sides are provided with liquid-inlet 31, and central dividing plate 3 opposite sides are provided with the nozzle 32 of liquid outlet.On put magnet 1 and place the upper and lower surface of spraying cavity with underlying magnet 5, spray chamber 6 is in the magnetic field B.Pulse current device 12 is for generation of pulse current, and its both positive and negative polarity links to each other with electrode 7.During use, metal liquid enters in the spray chamber 6 by feed pipe 8 from feed tank 11, and stepper motor 10 drives lifting platform 9, and lifting platform 9 is connected to feed tank 11 bottoms, and the liquid level in the feed tank 11 and spray chamber 6 maintain an equal level.Electric current I is by the metal liquid in the spray chamber 6, the metal liquid of I of aliving produces Ampere force F under the effect of magnetic field B, metal liquid is under the guiding of the central dividing plate 3 of the effect of Ampere force F and band nozzle, metal liquid is spouting from the nozzle of the central dividing plate 3 of band nozzle, forms molten drop.
In continuous injection molten drop process, the size that can regulate molten drop by pulse current width and the amplitude of regulating impulse current device 12 output.The present invention is applicable to metal liquid need based jet occasion, as being used for various circuit welding, rapid prototyping etc.
Claims (2)
1. electromagnetism micro-spray device is characterized in that being provided with and puts magnet, sprays cavity, underlying magnet, electrode, feed pipe, feed tank, elevating mechanism, stepper motor and pulse current device;
On put magnet and underlying magnet and be fixed in the upper and lower surface of spraying cavity respectively; Spray cavity and be provided with liquid-inlet and fluid injector, electrode is located at and is sprayed the cavity both sides, and stretch into the injection inside cavity, feed pipe one end is communicated with the spray chamber intracoelomic cavity, the feed pipe other end is communicated with feed tank, the elevating mechanism input is connected with stepper motor, and the elevating mechanism output is connected with feed tank, and pulse current device two is terminated at electrode.
2. a kind of electromagnetism micro-spray device as claimed in claim 1 is characterized in that described injection cavity is provided with central dividing plate and the lower cover of upper cover plate, band nozzle, and central dividing plate and the lower cover of upper cover plate, band nozzle are installed together, and constitute spray chamber jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310156231.7A CN103203294B (en) | 2013-04-28 | 2013-04-28 | Electromagnetic micro jet device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310156231.7A CN103203294B (en) | 2013-04-28 | 2013-04-28 | Electromagnetic micro jet device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103203294A true CN103203294A (en) | 2013-07-17 |
| CN103203294B CN103203294B (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310156231.7A Active CN103203294B (en) | 2013-04-28 | 2013-04-28 | Electromagnetic micro jet device |
Country Status (1)
| Country | Link |
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| CN (1) | CN103203294B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107413544A (en) * | 2017-07-11 | 2017-12-01 | 北京工业大学 | A kind of contactless porous device for preparing liquid metal droplet of more regulation and control of on-demand |
| CN107498133A (en) * | 2017-08-09 | 2017-12-22 | 李铖 | A kind of magnetic force welding procedure and tin feeding device |
| CN115488463A (en) * | 2022-09-23 | 2022-12-20 | 蒙宝康 | Liquid metal jet welding equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1480209A (en) * | 1965-03-20 | 1967-05-12 | Metrimpex Magyar Mueszeripari | Method and device for moving in particular products having a certain fluidity |
| US4919335A (en) * | 1988-07-19 | 1990-04-24 | The United States Of America As Represented By The United States Department Of Energy | Method and apparatus for atomization and spraying of molten metals |
| US5261611A (en) * | 1992-07-17 | 1993-11-16 | Martin Marietta Energy Systems, Inc. | Metal atomization spray nozzle |
| GB2317506A (en) * | 1996-09-24 | 1998-03-25 | Aea Technology Plc | Liquid metal pump having insulated demountable electrodes |
| DE19831335A1 (en) * | 1998-07-13 | 2000-02-10 | Michael Angermann | Appts to produce micro droplets of molten conductive metals uses a magneto-hydrodynamic pump with modulation to give a clean and controlled droplet ejection |
| GB2451453A (en) * | 2007-07-30 | 2009-02-04 | Arctic Circle Ltd | Electromagnetic pump |
| CN101628333A (en) * | 2002-02-26 | 2010-01-20 | 哈茨来特带钢公司 | Method for controlling flow of molten metal |
-
2013
- 2013-04-28 CN CN201310156231.7A patent/CN103203294B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1480209A (en) * | 1965-03-20 | 1967-05-12 | Metrimpex Magyar Mueszeripari | Method and device for moving in particular products having a certain fluidity |
| US4919335A (en) * | 1988-07-19 | 1990-04-24 | The United States Of America As Represented By The United States Department Of Energy | Method and apparatus for atomization and spraying of molten metals |
| US5261611A (en) * | 1992-07-17 | 1993-11-16 | Martin Marietta Energy Systems, Inc. | Metal atomization spray nozzle |
| GB2317506A (en) * | 1996-09-24 | 1998-03-25 | Aea Technology Plc | Liquid metal pump having insulated demountable electrodes |
| DE19831335A1 (en) * | 1998-07-13 | 2000-02-10 | Michael Angermann | Appts to produce micro droplets of molten conductive metals uses a magneto-hydrodynamic pump with modulation to give a clean and controlled droplet ejection |
| CN101628333A (en) * | 2002-02-26 | 2010-01-20 | 哈茨来特带钢公司 | Method for controlling flow of molten metal |
| GB2451453A (en) * | 2007-07-30 | 2009-02-04 | Arctic Circle Ltd | Electromagnetic pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107413544A (en) * | 2017-07-11 | 2017-12-01 | 北京工业大学 | A kind of contactless porous device for preparing liquid metal droplet of more regulation and control of on-demand |
| CN107413544B (en) * | 2017-07-11 | 2019-06-14 | 北京工业大学 | A kind of device of the contactless porous preparation liquid metal droplet of more regulations of on-demand |
| CN107498133A (en) * | 2017-08-09 | 2017-12-22 | 李铖 | A kind of magnetic force welding procedure and tin feeding device |
| CN115488463A (en) * | 2022-09-23 | 2022-12-20 | 蒙宝康 | Liquid metal jet welding equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103203294B (en) | 2015-07-15 |
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Address after: 363000 the southern tip of Xiamen University Zhangzhou campus, Zhangzhou, Fujian Patentee after: XIAMEN University Address before: Xiamen City, Fujian Province, 361005 South Siming Road No. 422 Patentee before: XIAMEN University |
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