CN102145320A - Multi-point injection nozzle - Google Patents
Multi-point injection nozzle Download PDFInfo
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- CN102145320A CN102145320A CN 201110058028 CN201110058028A CN102145320A CN 102145320 A CN102145320 A CN 102145320A CN 201110058028 CN201110058028 CN 201110058028 CN 201110058028 A CN201110058028 A CN 201110058028A CN 102145320 A CN102145320 A CN 102145320A
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- nozzle
- valve body
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- point injection
- jet expansion
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Abstract
The invention relates to a multi-point injection nozzle which comprises a valve body, a compression cup, a nozzle, a connecting screw and an O-shaped seal ring. The multi-point injection nozzle is characterized in that the compression cup is fixed at the lower end of the valve body through the connecting screw to press the nozzle in an inner hole at the lower end of the valve body, the O-shaped seal ring is arranged between the nozzle and a flange of the inner hole at the lower end of the valve body, the valve body is provided with a liquid inlet and also provided with internal threads used for screwing an external liquid supply unit, a liquid driving medium channel is arranged on the top of the valve body, a mechanical injection needle or high-pressure gas can be used as a driving medium, the nozzle is provided with a liquid channel and nozzle outlets, and an arc surface is arranged at the connection part of the liquid channel and the nozzle outlets. 5 or more nozzle outlets are arranged circumferentially around the central outlet. The multi-point injection nozzle has the advantages of simple structure, flexible liquid driving mode, high coating efficiency, high injection efficiency and the like, is widely applied to the fields of electronic packaging such as multi-chip packaging and large-scale integrated circuit packaging, engine fuel nozzles, and the like.
Description
Technical field
The present invention relates to a kind of multi-point injection nozzle, it can produce high-frequency large tracts of land jeting effect, can be widely used in multicore sheet encapsulation, large scale integrated circuit encapsulation in the Electronic Packaging, and field such as engine fuel nozzle.
Background technology
Along with the microminiaturization of semiconductive thin film manufacturing technology, integrated and continuous development, the Electronic Packaging technology is as an important component part of current semiconductor manufacturing industry, presented high density, high efficiency, development trend cheaply at present.In the Electronic Packaging field, the glue distribution technique is one of key technology, is widely used in that chip attachment, chip are coated, in the technology such as heat conductive silica gel filling, chip and substrate interconnection.
With regard to chip level, the encapsulation technology development of next stage is the trend of single-chip to the development of multicore sheet, for single-chip package, the encapsulation of multicore sheet is directly a plurality of bare chips to be installed on the multi-layered high density interconnected substrate, seal together then, package casing is identical with other shell with the connection of circuit board.The encapsulation of multicore sheet allows to draw closer together between chip and the chip compared with single-chip package, therefore for the glue distribution technique, the area of single injection event also requires bigger, be accompanied by the development trend of multicore sheet encapsulation, the coating of large tracts of land glue will be the developing direction of next stage glue distribution technique.
Each enterprise and R﹠D institution focus on glue volume and the injection frequency of breaking through single point injection both at home and abroad at present, the DJ9500 Glue dripping head that U.S. Asymtek company releases, minimum spray site diameter is 200 μ m, and accuracy of spray is 1 nanoliter, and the injection stream line width can reach 50 μ m; The model that Japan MUSASHI releases is the MJET-A-HU*-RL Glue dripping head, and it is the highest that some glue frequency reaches the world, is 270dps, and equalization point glue amount is 0.02 mg/d.For the some glue in the large size chip encapsulation, major part all is to adopt the method that repeats to spray, and operating efficiency is not high like this, and when double injection, drop priority and substrate contacts can produce bubble between two drops, bright dipping is produced very big influence.
Summary of the invention
Purpose of the present invention provides a kind of multi-point injection nozzle at the deficiency that prior art exists, and can realize high-frequency large tracts of land jeting effect.
For achieving the above object, design of the present invention is:
Multi-point injection nozzle of the present invention has valve body.
The valve body side has a liquid-inlet, the liquid-inlet place is provided with internal thread and outside liquid feed device and revolves and join, and the liquid inlet provides stable liquid source, the existence of safeguard work medium for this nozzle, the flow rate of liquid of input is adjustable, for downstream flow provides pressure and power.
The valve body top has a liquid driven medium channel, and its liquid driven medium can be mechanical nozzle needle or gases at high pressure.
Liquid driven medium channel inwall is provided with a frustum in the valve body, and described frustum has a convergency, and its convergency is not more than 90 °, and frustum can cushion the mechanical collision of nozzle needle and nozzle when drive medium is mechanical nozzle needle; When drive medium was gases at high pressure, frustum can quicken flowing of gases at high pressure.
Valve body lower end has a boss, the center is provided with an endoporus, compress a set of cups is fixed in valve body by attachment screw lower end, thereby nozzle is pressed in the endoporus of valve body lower end, one O RunddichtringO is housed between the flange of nozzle and valve body lower end endoporus, has realized the sealing of nozzle chamber and external environment condition.
Multi-point injection nozzle of the present invention has nozzle.
Nozzle has a fluid course and jet expansion, and fluid course and jet expansion junction are provided with an arc-shaped surface, and when drive medium was mechanical nozzle needle, this arc-shaped surface cooperated fully with the arc-shaped surface of mechanical nozzle needle lower end.
The diameter of jet expansion is millimeter or micron dimension, and the jet expansion number is more than or equal to 5, and is circumferential arrangement around central outlet.
The fluid course of nozzle interior and jet expansion inner surface all are coated with the Teflon material, can reduce the influence of material to internal flow characteristics.
According to the foregoing invention design, the present invention adopts following technical proposals:
A kind of multi-point injection nozzle, comprise valve body, compress a set of cups, nozzle, attachment screw and O RunddichtringO, it is characterized in that: telling a story compresses a set of cups is fixed in valve body by attachment screw lower end, thereby nozzle is pressed in the valve body lower end endoporus, the O RunddichtringO is housed between the flange of nozzle and valve body lower end endoporus, and the O RunddichtringO has been realized the sealing of nozzle chamber and external environment condition.
Above-mentioned valve body side has a liquid-inlet, and the liquid-inlet place is provided with internal thread and outside liquid feed device and revolves and join; Described valve body has a liquid driven medium channel, its drive medium can be mechanical nozzle needle or gases at high pressure, and the liquid inlet provides stable liquid source, the existence of safeguard work medium for this nozzle, the flow rate of liquid of input is adjustable, for downstream flow provides pressure and power; Valve interior wall has a frustum, described frustum has a convergency, and its convergency is not more than 90 °, and frustum can cushion the collision of nozzle needle and nozzle when drive medium is mechanical nozzle needle, when drive medium was gases at high pressure, frustum can quicken flowing of gases at high pressure.
Said nozzle has a fluid course and jet expansion, and fluid course and jet expansion junction are provided with an arc-shaped surface, and when drive medium was mechanical nozzle needle, this arc-shaped surface cooperated fully with the arc-shaped surface of mechanical nozzle needle lower end; The jet expansion diameter is millimeter or micron dimension, and the jet expansion number is more than or equal to 5, and is circumferential arrangement around central outlet; The fluid course of nozzle interior and jet expansion inner surface are coated with the Teflon material, can reduce the influence of nozzle material to internal flow characteristics, are convenient to safeguard and clean.
The present invention has following conspicuous outstanding substantive distinguishing features and remarkable advantage compared with prior art:
1, adopt multi-point injection nozzle of the present invention, liquid can have multiple type of drive, comprises that mechanical nozzle needle drives and drive of high-pressure gas;
2, multi-point injection nozzle of the present invention, the nozzle arrangements that adopts the porous annular array to export can improve surface covered and injection frequency.
3, the present invention handles by nozzle inner walls being done Teflon, reduces the restriction that is subjected to fluent material, and it can be applied to the large tracts of land coating of the glue of basic, normal, high viscosity.
Description of drawings
Fig. 1 multi-point injection nozzle
Nozzle cross-section figure when Fig. 2 liquid driven medium is mechanical nozzle needle
Nozzle cross-section figure when Fig. 3 liquid driven medium is gases at high pressure.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is further detailed.
Embodiment one:
With reference to Fig. 1, multi-point injection nozzle of the present invention, comprise valve body (1), compress a set of cups (2), nozzle (3), attachment screw (4) and O RunddichtringO (5), it is characterized in that: describedly compress a set of cups (2) is fixed in valve body (1) by attachment screw (4) lower end, thereby nozzle (3) is pressed in the endoporus of valve body (1) lower end, between the flange of nozzle (3) and valve body (1) lower end endoporus O RunddichtringO (5) is housed.Nozzle (3) has a fluid course and jet expansion (32), and fluid course and jet expansion (32) junction is provided with an arc-shaped surface (31); Described jet expansion (32) diameter is millimeter or micron dimension, and jet expansion (32) number is more than or equal to 5, and is circumferential arrangement around central outlet.
Embodiment two:
Present embodiment and embodiment one are basic identical, and special feature is as follows:
With reference to Fig. 2, valve body (1) side has a liquid-inlet (11), and liquid-inlet (11) is located to be provided with internal thread and outside liquid feed device and revolved and join; Described valve body (1) has a liquid driven medium channel (12), valve body (1) inwall has a frustum (13), described frustum has a convergency, its convergency is not more than 90 °, frustum when drive medium is mechanical nozzle needle (13) can cushion the collision of nozzle needle (6) and nozzle (3), when drive medium was gases at high pressure, frustum can quicken flowing of gases at high pressure.
Inner fluid course and jet expansion (32) inner surface of described nozzle (3) is coated with the Teflon material, can reduce the influence of nozzle (3) material to internal flow characteristics, is convenient to safeguard and clean.
With reference to Fig. 1 and 2, described liquid driven medium is mechanical nozzle needle (6), described nozzle needle (6) has a shaft shoulder (61) and has a tapering, the convergency of this tapering is not more than 90 °, cooperate with the frustum (13) of valve interior wall, can buffer mechanism nozzle needle (6) and the collision of nozzle (3), also played spacing effect.
When nozzle needle (6) when moving upward, glue externally enters the nozzle interior fluid course under the effect of pressure; Hit glue in the fluid course when nozzle needle (6) moves downward the butt of extreme lower position hour hands, promote it and flow, also give its certain momentum simultaneously and cut off glue, make its jetting nozzle, realize the large tracts of land coating to jet expansion (32).
Embodiment three:
Present embodiment and embodiment one are basic identical, and special feature is as follows:
With reference to Fig. 1 and 3, described liquid driven medium is gases at high pressure.When glue externally enters the nozzle interior fluid course under the effect of pressure, gases at high pressure also enter in the cavity from the valve body top, gas and liquid are mixed into bubble flow in inside cavity, when bubble flow jetting nozzle (3) enters in the atmospheric environment, because bubble external and internal pressure difference is bigger, the rapid explosion of bubble becomes liquidus, brin with the liquid explosion that is wrapped on the bubble, be ejected on the substrate with vaporific form, realize the large tracts of land coating.
Claims (4)
1. multi-point injection nozzle, comprise valve body (1), compress a set of cups (2), nozzle (3), attachment screw (4) and O RunddichtringO (5), it is characterized in that: describedly compress a set of cups (2) is fixed in valve body (1) by attachment screw (4) lower end, thereby nozzle (3) is pressed in the endoporus of valve body (1) lower end, between the flange of nozzle (3) and valve body (1) lower end endoporus O RunddichtringO (5) is housed; Described nozzle (3) has a fluid course and jet expansion (32), and fluid course and jet expansion (32) junction is provided with an arc-shaped surface (31); Described jet expansion (32) diameter is millimeter or micron dimension, and jet expansion (32) number is more than or equal to 5, and is circumferential arrangement around central outlet.
2. multi-point injection nozzle according to claim 1 is characterized in that: described valve body (1) side has a liquid-inlet (11), and liquid-inlet (11) is located to be provided with internal thread and outside liquid feed device and revolved and join; Described valve body (1) has a liquid driven medium channel (12), and its drive medium is mechanical nozzle needle or gases at high pressure.
3. multi-point injection nozzle according to claim 1, it is characterized in that: described valve body (1) inwall has a frustum (13), described frustum has a convergency, its convergency is not more than 90 °, the collision of frustum when drive medium is mechanical nozzle needle (13) buffering nozzle needle (6) and nozzle (3), when drive medium was gases at high pressure, frustum quickened flowing of gases at high pressure.
4. multi-point injection nozzle according to claim 1, it is characterized in that: inner fluid course and jet expansion (32) inner surface of described nozzle (3) is coated with the Teflon material, can reduce of the influence of nozzle (3) material, be convenient to safeguard and clean internal flow characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110058028 CN102145320A (en) | 2011-03-11 | 2011-03-11 | Multi-point injection nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110058028 CN102145320A (en) | 2011-03-11 | 2011-03-11 | Multi-point injection nozzle |
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| CN102145320A true CN102145320A (en) | 2011-08-10 |
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| CN 201110058028 Pending CN102145320A (en) | 2011-03-11 | 2011-03-11 | Multi-point injection nozzle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357528A (en) * | 2012-03-27 | 2013-10-23 | 上海丰禾精密机械有限公司 | Novel nozzle for high-pressure washer, and high-pressure spray gun |
| CN106311557A (en) * | 2015-06-25 | 2017-01-11 | 常州高凯精密机械有限公司 | Thin sheet percussive type dispensing nozzle |
| CN106475291A (en) * | 2016-12-01 | 2017-03-08 | 广东工业大学 | A kind of method improving spray site colloid amount and point glue equipment |
| WO2017080527A1 (en) * | 2015-11-14 | 2017-05-18 | 域鑫科技（惠州）有限公司 | Flow gathering type spray nozzle |
| CN106975641A (en) * | 2017-03-29 | 2017-07-25 | 成都理工大学 | A kind of multifunctional bionic wiper and its clean method |
Citations (5)
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| US20010045437A1 (en) * | 2000-05-16 | 2001-11-29 | Nordson Corporation | Spreading device for spreading fluids, and device for delivering and applying fluid, especially adhesive |
| CN101038358A (en) * | 2006-03-17 | 2007-09-19 | 鸿富锦精密工业（深圳）有限公司 | spot gluing device for camera lens |
| CN101190429A (en) * | 2007-12-07 | 2008-06-04 | 华中科技大学 | High viscosity fluid microscale spraying glue dropping machine |
| CN101844124A (en) * | 2010-03-17 | 2010-09-29 | 上海大学 | Ejecting adhesive dispenser based on dual-function cylinder |
| JP2010221130A (en) * | 2009-03-24 | 2010-10-07 | Tokyo Automatic Machinery Works Ltd | Paste applicator |
-
2011
- 2011-03-11 CN CN 201110058028 patent/CN102145320A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010045437A1 (en) * | 2000-05-16 | 2001-11-29 | Nordson Corporation | Spreading device for spreading fluids, and device for delivering and applying fluid, especially adhesive |
| CN101038358A (en) * | 2006-03-17 | 2007-09-19 | 鸿富锦精密工业（深圳）有限公司 | spot gluing device for camera lens |
| CN101190429A (en) * | 2007-12-07 | 2008-06-04 | 华中科技大学 | High viscosity fluid microscale spraying glue dropping machine |
| JP2010221130A (en) * | 2009-03-24 | 2010-10-07 | Tokyo Automatic Machinery Works Ltd | Paste applicator |
| CN101844124A (en) * | 2010-03-17 | 2010-09-29 | 上海大学 | Ejecting adhesive dispenser based on dual-function cylinder |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357528A (en) * | 2012-03-27 | 2013-10-23 | 上海丰禾精密机械有限公司 | Novel nozzle for high-pressure washer, and high-pressure spray gun |
| CN103357528B (en) * | 2012-03-27 | 2016-03-16 | 上海丰禾精密机械有限公司 | Jetting machine new type nozzle and high-pressure spray gun |
| CN106311557A (en) * | 2015-06-25 | 2017-01-11 | 常州高凯精密机械有限公司 | Thin sheet percussive type dispensing nozzle |
| WO2017080527A1 (en) * | 2015-11-14 | 2017-05-18 | 域鑫科技（惠州）有限公司 | Flow gathering type spray nozzle |
| CN106475291A (en) * | 2016-12-01 | 2017-03-08 | 广东工业大学 | A kind of method improving spray site colloid amount and point glue equipment |
| CN106975641A (en) * | 2017-03-29 | 2017-07-25 | 成都理工大学 | A kind of multifunctional bionic wiper and its clean method |
| CN106975641B (en) * | 2017-03-29 | 2023-02-21 | 成都理工大学 | Multifunctional bionic pipe cleaner and cleaning method thereof |
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Application publication date: 20110810 |