CN103203294B - Electromagnetic micro jet device - Google Patents
Electromagnetic micro jet device Download PDFInfo
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- CN103203294B CN103203294B CN201310156231.7A CN201310156231A CN103203294B CN 103203294 B CN103203294 B CN 103203294B CN 201310156231 A CN201310156231 A CN 201310156231A CN 103203294 B CN103203294 B CN 103203294B
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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 electromagnetic micro jet device for the micro-spray of liquid metal.
Background technology
Along with the development of microelectronic packaging technology, need the technique using fluent material to get more and more in microelectronic industry, impel fluid micro-spray technology also to develop rapidly.Fluid micro-spray technology is a key technology in microelectronics Packaging, and it can formation of structure 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 in a controlled manner fluid being carried out to accurately distribution, can by 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 the room machine of components and parts or electric connection.
At present, the micro-spray device of need based jet pattern mainly contains piezoelectric type, hot bubble type, focus ultrasonic formula, Pneumatic driving type and mechanical type etc.Chinese patent CN200610138558.1 discloses a kind of Pneumatic driving type micro liquid jetting system, is mainly used in reagent micro and distributes occasion, and owing to adopting air pressure to drive, its frequency should not be too high, and the trace that device is not comparatively suitable for metal material sprays.Chinese patent CN201110332491.6 discloses a kind of fluid pulse ejecting device, and system adopts pressurized self-pressure liquid to drive micro-spray, is applicable to pulse type microspray irrigation and irrigates system, belongs to a kind of continous way micro-spray device, is not suitable for need based jet occasion.Chinese patent CN201110074206.5 discloses a kind of pulse micro-sprinkler irrigation and irrigates system, and system adopts spring mechanism to coordinate self-pressure liquid, realizes positive/negative-pressure and switches, obtain continuous micro-spray of liquid, can be applicable to irrigating occasion continuously, but not be suitable for need based jet occasion.
Summary of the invention
The object of this invention is to provide a kind of electromagnetic micro jet device being applicable to 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 cavity both sides, and stretch into injection inside cavity, feed pipe one end is communicated with spray chamber intracoelomic cavity, the feed pipe other end is communicated with feed tank, elevating mechanism input is connected with stepper motor, and elevating mechanism output is connected with feed tank, and pulse current device two end is connected to electrode.
Described injection cavity can be provided with upper cover plate, the central dividing plate being with nozzle and lower cover, and central dividing plate and the lower cover of upper cover plate, band nozzle are installed together, and jointly form spray chamber.
Compared with the prior art, operation principle of the present invention and beneficial effect as follows:
On put magnet and underlying magnet for generation of magnetic field, spray the spray chamber of cavity for storing metal liquid to be sprayed, electrode and metal liquid good contact.Pulse current device both positive and negative polarity is connected on electrode, makes metal liquid by pulse current, according to left hand rule determination ampere force direction, makes ampere force direction towards the liquid outlet direction of spraying cavity.Feed tank for spray chamber provides metal liquid, is provided with lifting platform below it by feed pipe, guarantees that feed tank liquid level and spray chamber height maintain an equal level, liquid can not be flowed out automatically from fluid injector, also can not reflux; Stepper motor, for driving lifting platform, compensates the liquid level of feed tank according to emitted dose.
Because electric current is by receiving the effect in magnetic field in liquid metal process, is formed and pointing 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, the liquid droplet metal of final formation.Because density metal is comparatively large, in certain pressure head situation, himself will flow out from nozzle, and therefore feed tank liquid level must remain basically stable with spray chamber height, guarantees that metal liquid oneself can not flow out from nozzle.Meanwhile, in order to constantly provide metal liquid to spray chamber, along with the continuous ejection of liquid metal, feed tank should pass through the continuous wicking height of lifting platform, and its liquid level and spray chamber are consistent, and the trace as required finally realizing liquid metal sprays.
The present invention has following outstanding advantages: the driving force that (1) liquid metal sprays derives from Ampere force, is directly the kinetic energy of liquid metal electric energy conversion, drives the injection of metal liquid, greatly simplify the frame for movement of injection apparatus; The present invention adopts pulse-type current control mode, is easy to the direct control of the aspects such as the size to driving force, action time, injection frequency, and the trace being particularly suitable for liquid metal sprays occasion, as aspects such as the injection of scolding tin, the rapid prototypings of metalwork.(2) when adopting pulse current driving liquid droplets, stepper motor rotates corresponding angle according to the quantity of pulse, and then drive lifting platform to raise corresponding height, lifting platform compensates and has supplied the liquid level of feed tank, ensure that 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 micro-spray.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the decomposition texture schematic diagram of the embodiment of the present invention.
Fig. 3 is part-structure and the principle schematic of the embodiment of the present invention.
Detailed description of the invention
See Fig. 1 ~ 3, the embodiment of the present invention is provided with puts magnet 1, injection cavity (comprising upper cover plate 2, the central dividing plate 3 being with nozzle and lower cover 4), 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 form spray chamber 6, and central dividing plate 3 side is provided with liquid-inlet 31, and central dividing plate 3 opposite side is provided with the nozzle 32 of liquid outlet.On put magnet 1 and be placed in the upper and lower surface of spraying cavity with underlying magnet 5, spray chamber 6 is in the B of magnetic field.Pulse current device 12 is for generation of pulse current, and its both positive and negative polarity is connected with electrode 7.During use, metal liquid enters in spray chamber 6 from feed tank 11 by feed pipe 8, and stepper motor 10 drives lifting platform 9, and lifting platform 9 is connected to feed tank 11 bottom, and the liquid level in feed tank 11 and spray chamber 6 maintain an equal level.Electric current I is by the metal liquid in spray chamber 6, the metal liquid of I of aliving produces Ampere force F under the effect of magnetic field B, metal liquid Ampere force F effect and band nozzle central dividing plate 3 guiding under, metal liquid is spouting from the nozzle of the central dividing plate 3 of band nozzle, forms molten drop.
In continuous metal injection drop process, the pulse current width exported by regulating impulse current device 12 and amplitude carry out the size regulating molten drop.The present invention is applicable to metal liquid need based jet occasion, as various circuit welding, rapid prototyping etc.
Claims (2)
1. an electromagnetic micro jet device, is characterized in that being provided with and puts magnet, injection 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 cavity both sides, and stretch into injection inside cavity, feed pipe one end is communicated with spray chamber intracoelomic cavity, the feed pipe other end is communicated with feed tank, elevating mechanism input is connected with stepper motor, and elevating mechanism output is connected with feed tank, and pulse current device two end is connected to electrode.
2. a kind of electromagnetic micro jet device as claimed in claim 1, is characterized in that described injection cavity is provided with upper cover plate, the central dividing plate being with nozzle and lower cover, and central dividing plate and the lower cover of upper cover plate, band nozzle are installed together, and jointly form spray chamber.
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 CN103203294A (en) | 2013-07-17 |
| CN103203294B true 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 |
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| CN (1) | CN103203294B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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 |
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| CN103203294A (en) | 2013-07-17 |
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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 |