CN201135944Y - High viscosity fluid trace spraying and gluing device - Google Patents

High viscosity fluid trace spraying and gluing device Download PDF

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Publication number
CN201135944Y
CN201135944Y CNU2007200888278U CN200720088827U CN201135944Y CN 201135944 Y CN201135944 Y CN 201135944Y CN U2007200888278 U CNU2007200888278 U CN U2007200888278U CN 200720088827 U CN200720088827 U CN 200720088827U CN 201135944 Y CN201135944 Y CN 201135944Y
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China
Prior art keywords
fluid
cavity
valve
valve seat
driving mechanism
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Expired - Lifetime
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CNU2007200888278U
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Chinese (zh)
Inventor
张鸿海
刘华勇
舒霞云
徐裕力
肖峻峰
朱福龙
张丰
王永先
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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Priority to CNU2007200888278U priority Critical patent/CN201135944Y/en
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Abstract

The utility model provides a high-viscosity fluid micro-injection spot-gluing device. The upper end of a driving mechanism is connected with a stroke and pre-pressing adjustment mechanism, the lower end thereof is connected with a injection mechanism, the side part of the injection mechanism is connected with a feeding mechanism, a valve rod and a injection head positioned at the lower end of the valve are arranged in the inner part of the injection mechanism, the injection head comprises a valve rod, a valve seat and a injection nozzle. During spot gluing, the valve is separated form the valve under the exertion of the driving mechanism, the clearance formed by the valve leaving the valve seat is filled with the fluid under the exertion of the feeding pressure and then the air is compressed to be released, the fluid around the valve and in the valve seat flows to the injection nozzle with certain speed under the exertion of the stroke and the pre-pressing adjustment mechanism, finally, the fluid stops flowing to the injection nozzle until the valve rod and valve seat are completely contacted and closed, the fluid flows out from the injection nozzle is separated from the fluid in the valve seat so that liquid drops with certain speed are formed. The high-viscosity fluid micro-injection spot-gluing device realizes the distribution of the high-viscosity fluid material has the advantages of non-contact, high precision, high reliability and low cost.

Description

A kind of high viscosity fluid microscale spraying glue dropping machine
Technical field
The utility model relates to microelectronic packaging technology, especially relates to high viscosity fluid trace spraying technique.
Background technology
In microelectronics Packaging, the surface applied of packaging plastic is very important operation, is widely used in the back road packaging technology of integrated circuit manufacturing.The distribution technique that is used for packaging plastic at present mainly is divided into shifting with serigraphy and needle tubing and is the contact of representative and is contactless two big classes of representative with the spraying technique.And use packaging plastic mostly to be full-bodied non-newtonian fluid greatly in the microelectronics Packaging, its complex changeable characteristics makes and adopts the contact dotting glue method to carry out the coating performance and the difficult quality guarantee of packaging plastic.Along with the global semiconductor industry shifts to China, domestic Electronic Packaging industry is just flourish, the sealed in unit demand that high accuracy encapsulation fluid distributes increases year by year, but the high-precision automatic spot gluing equipment overwhelming majority of present domestic use is from external import, and price is very expensive.Therefore, it is imperative that research has the fluid dispensing technology of high accuracy, high reliability of independent intellectual property right.And along with Development of Packaging Technology, the continuous lifting that can require a colloidality in the microelectronics industry has excited sealed in unit manufacturer further investigation fluid point glue theory and technology, researchs and develops new dispensing method, especially contactless dispensing technology.
At present external existing contactless some glue mode mainly is to be the piezo spray technology that drives with the piezoelectric element,, the Asymtek company of the U.S. for example, Microfab company, the Picodostec company of Germany, its equipment price is very expensive, and can only finish the injection of middle low-viscosity fluid.Domestic packaging plastic distribution technique in the microelectronic packaging technology is mainly concentrated on the contact dispensing technology, for example people such as Ding Han of the Central China University of Science and Technology to time/aspect such as the modeling of pressure-type point glue procedures system, theory analysis and control system optimization carried out big quantity research, the precision of the time of having improved greatly/pressure-type point glue.People such as Deng of Central South University Gui tinkling of pieces of jade further investigate at the glue Extrusion Mechanism and the experimental study aspect thereof of screw pump point glue, have obtained very much progress.But these dispensing technologies all belong to the contact dispensing technology, be applicable to the colloid of midium-viscosity, the size of some glue amount be subjected to gas pressure or motor rotation time, screw geometrical and with parameter influences such as glue supply chamber fit dimension, glue characteristic, syringe needle and substrate distance.High viscosity fluid trace spraying technique research towards microelectronics Packaging at present still belongs to blank.
The utility model content
The purpose of this utility model is to provide a kind of high viscosity fluid microscale spraying glue dropping machine, can realize the spray site glue to the high viscosity fluid material.
The utility model comprises injection equipment 1, driving mechanism 2, stroke and precompressed governor motion 3 and feeding machanism 4, driving mechanism 2 upper ends link to each other with precompressed governor motion 3 with stroke, driving mechanism 2 lower ends link to each other with injection equipment 1, and injection equipment 1 sidepiece is connected with feeding machanism 4
It is characterized in that,
Described injection equipment 1, comprise cavity 16 and the valve rod 11 that is arranged on cavity 16 inside, valve rod 11 upper ends connect the piston rod of described driving mechanism 2 inside cylinder pistons 24, valve rod 11 lower ends are provided with injector head 13, cavity 16 upper ends are connected with the cylinder 22 of described driving mechanism 2, cavity 16 sidepieces are provided with feeding-passage 18, fluid passage in the material storage tube bracing frame 41 of feeding-passage 18 1 ends and described feeding machanism 4 is connected, the other end is connected with slit between cavity 16 and the valve rod 11, also be provided with exhaust passage 17 in the cavity 16, cavity 16 lower ends connect collet threaded cover 12, the inside of collet threaded cover 12 connects injector head 13, and the outside of collet threaded cover 12 is with resistance heated circle 15;
Described stroke and precompressed governor motion 3, comprise spring 33, spring 33 lower ends are connected with piston top cover 21 upper ends in the described driving mechanism 2, the following end in contact of spring 33 upper ends and precompressed adjusting nut 32, the inside of precompressed adjusting nut 32 is placed with stroke adjustment screw rod 31, precompressed adjusting nut 32 is stretched out in the upper end of stroke adjustment screw rod 31, the lower end is stretched in the spring 33, be placed with adjusting device connector 34 in the outside of precompressed adjusting nut 32, be provided with gripper shoe 35 between the cylinder 22 of adjusting device connector 34 and described driving mechanism 2.
Described injector head 13 comprises valve seat 132 and nozzle 14, and valve seat 132 tops are positioned at described cavity 16, and the lower end links to each other with nozzle 14, and valve seat 132 bottoms are provided with fluid issuing, and nozzle 14 is provided with and the corresponding fluid intake of the fluid issuing of valve seat 132.
Described valve seat 132 is placed with sealing ring with described cavity 16 contact-making surface places and described valve seat 132 with described nozzle 14 contact-making surface places.
Described cavity 16 is provided with sealing ring with cylinder 22 contact-making surfaces of described driving mechanism 2.
The outside of described feeding machanism 4 adopts the tight fit mode to be with material storage tube retainer 42.
The driver part that the utility model adopts cylinder-spring to constitute can be realized the quick response of course of injection, moves with fast speed thereby promote injected fluid, realizes the injection of high viscosity fluid.The feeding system that the piston-barrel that adopts air pressure to drive is formed can drive the high viscosity fluid motion with elevated pressures, realizes replenishing the spray chamber inner fluid.The mode that adopts nozzle to separate with valve seat can realize that the drop of various sizes sprays by changing the nozzle of different size, can access the point, line, surface pattern of being made up of glue point of various sizes.The utility model has been realized the distribution of high viscosity fluid material, and has advantages such as noncontact, high accuracy, high reliability, low cost.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the partial enlarged drawing of injector head 13.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1, the utility model is made up of injection equipment 1, driving mechanism 2, stroke and precompressed governor motion 3 and 4 four parts of feeding machanism.
Injection equipment 1 comprises cavity 16 and the valve rod 11 that is arranged on cavity 16 inside, and valve rod 11 upper ends connect driving mechanism 2, and the lower end is provided with injector head 13.Cavity 16 sidepieces are provided with feeding-passage 18, and the one end is connected with feeding machanism 4, and the other end and cavity 16 are connected with slit between the valve rod 11, are used for sending the fluid from feed mechanism 4 to injector head 13 by valve rod 11.Cavity 16 sidepieces also are provided with exhaust passage 17, are used to discharge air in the injection equipment 1.Cavity 16 connects the collet threaded cover 12 be used to support injector head 13 by the lower part outer surface thread, is equipped with resistance heated circle 15 at the outer surface of collet threaded cover 12, is used to temperature control is provided in the course of work.
Driving mechanism 2 comprises cylinder 22 and the cylinder piston 24 that is arranged in the cylinder 22, and cylinder piston 24 is divided into two chambers up and down with the chambers in the cylinder 22, is provided with the rubber grommet 25 that seals at piston 24 with cylinder 22 contact-making surface places.The piston rod of cylinder piston 24 is connected with the valve rod 11 of injection equipment 1, is provided with piston top cover 21 in cylinder piston 24 upper ends.The sidewall of cylinder 22 upper chamber is provided with pore 23, is used to discharge upper chamber's gas; Cylinder 22 lower chambers are connected with compressed air air feed tracheae 27 by the tracheae jointing 26 that is installed in cylinder 22 lower chambers sidewalls, and compressed air air feed tracheae 27 other ends are connected with compressed air gas source.Compressed air enters cylinder 22 lower chambers by compressed air air feed tracheae 27, for the piston motion provides driving force.The cavity 16 of cylinder 22 and injection equipment 1 links to each other by bolt, places sealing ring 28,29 at cylinder 22 and cavity 16 contact-making surfaces, seals, and prevents that gas enters cavity 16 in the cylinder, prevents that simultaneously fluid from entering cylinder 22.
Stroke, precompressed governor motion 3, include the spring 33 that precompression is provided, the one end is connected with piston top cover 21 faces of driving mechanism 2, the other end is connected with the lower end of precompressed adjusting nut 32 and contacts, be placed with stroke adjustment screw rod 31 in the inside of precompressed adjusting nut 32, precompressed adjusting nut 32 is stretched out in the upper end of stroke adjustment screw rod 31, and the lower end is stretched in the spring 33.By regulating the decrement that distance between precompressed adjusting nut 32 and the piston top cover 21 can control spring 33, thus the predetermined pressure of providing; Can regulate the stroke that piston moves in the course of work by adjusting stroke adjustment screw rod 31 with the relative position of piston top cover 21, thus the maximum speed of regulating valve stem 11 motions.Outer surface at precompressed adjusting nut 32 is placed with adjusting device connector 34, between the cylinder 22 of adjusting device connector 34 and driving mechanism 2, be provided with gripper shoe 35, be used for fixing the relative position between cylinder 22 and the adjusting device connector 34, and as whole device and outside connecting interface.
Feeding machanism 4, the material storage tube 43 of dress high viscosity fluid in comprising, its inside is provided with piston 44, and compressed air and fluid are played buffer action.The end that material storage tube 43 is equipped with fluid is provided with the port of export, and an other end links to each other with compressed air air feed tracheae 47 by attaching nut 46, so that the feed back pressure to be provided.With compressed air air feed tracheae 47 contact-making surface places seal 45 is set at material storage tube 43, is used for the space on material storage tube 43 inner carriers 44 is sealed.The end that material storage tube 43 is provided with the port of export links to each other with material storage tube bracing frame 41, and fluid passage one end in the material storage tube bracing frame 41 is connected with the port of export of material storage tube 43, and the other end is connected with the feeding-passage 18 of injection equipment 1.In order to be convenient to fast quick-detach material storage tube in the course of work, carry out the rapid fluid filling and change, also can material storage tube retainer 42 be installed in material storage tube 43 outsides, be used to support material storage tube 43, it adopts the tight fit mode to link to each other with material storage tube.
As shown in Figure 2, injector head 13 comprises valve seat 132 and nozzle 14, and valve seat 132 tops are positioned at the lower end of cavity 16 inner valve stem 11 of driving mechanism 2, and the lower end links to each other with nozzle 14, valve seat 132 bottoms are provided with fluid issuing, and nozzle 14 is provided with and the corresponding fluid intake of the fluid issuing of valve seat 132.In order to reach good sealing effectiveness, be placed with sealing ring 131 at valve seat 132 with cavity 16 contact-making surface places, valve seat 132 is placed with sealing ring 133 with nozzle 14 contact-making surface places.
The course of work of the present utility model: at first, piston 24 is under compressed air-driven, and from valve seat 132, surrounding fluid is filled under the feed pressure effect by valve rod 11 and left and the gap that forms with glue dispensing valve valve rod 11 band; Then, compressed air discharges, and piston 24 returns with certain acceleration under the spring force effect, drives valve rod 11 surrounding fluids together and promote valve seat 132 inner fluids and flow to nozzle 14 with certain speed; At last, when valve rod 11 and valve seat 132 contact closure fully, stop the valve inner fluid to continue to flow to nozzle 14, the fluid of mass flowing nozzle 14 separates with valve seat 132 inner fluids, forms the drop with certain speed.

Claims (5)

1, a kind of high viscosity fluid microscale spraying glue dropping machine, comprise injection equipment (1), driving mechanism (2), stroke and precompressed governor motion (3) and feeding machanism (4), driving mechanism (2) upper end links to each other with precompressed governor motion (3) with stroke, driving mechanism (2) lower end links to each other with injection equipment (1), injection equipment (1) sidepiece is connected with feeding machanism (4)
It is characterized in that,
Described injection equipment (1), comprise cavity (16) and be arranged on the inner valve rod (11) of cavity (16), valve rod (11) upper end connects the piston rod of described driving mechanism (2) inside cylinder piston (24), valve rod (11) lower end is provided with injector head (13), cavity (16) upper end is connected with the cylinder (22) of described driving mechanism (2), cavity (16) sidepiece is provided with feeding-passage (18), fluid passage in the material storage tube bracing frame (41) of feeding-passage (18) one ends and described feeding machanism (4) is connected, the other end is connected with slit between cavity (16) and the valve rod (11), also be provided with exhaust passage (17) in the cavity (16), cavity (16) lower end connects collet threaded cover (12), the inside of collet threaded cover (12) connects injector head (13), and the outside of collet threaded cover (12) is with resistance heated circle (15);
Described stroke and precompressed governor motion (3), comprise spring (33), piston top cover (21) upper end in spring (33) lower end and the described driving mechanism (2) is connected, the following end in contact of spring (33) upper end and precompressed adjusting nut (32), the inside of precompressed adjusting nut (32) is placed with stroke adjustment screw rod (31), precompressed adjusting nut (32) is stretched out in the upper end of stroke adjustment screw rod (31), the lower end is stretched in the spring (33), be placed with adjusting device connector (34) in the outside of precompressed adjusting nut (32), be provided with gripper shoe (35) between the cylinder (22) of adjusting device connector (34) and described driving mechanism (2).
2, a kind of high viscosity fluid microscale spraying glue dropping machine according to claim 1, it is characterized in that, described injector head (13) comprises valve seat (132) and nozzle (14), valve seat (132) top is positioned at described cavity (16), the lower end links to each other with nozzle (14), valve seat (132) bottom is provided with fluid issuing, and nozzle (14) is provided with the corresponding fluid intake of fluid issuing with valve seat (132).
3, a kind of high viscosity fluid microscale spraying glue dropping machine according to claim 2 is characterized in that, described valve seat (132) is placed with sealing ring with described cavity (16) contact-making surface place and described valve seat (132) with described nozzle (14) contact-making surface place.
According to each described a kind of high viscosity fluid microscale spraying glue dropping machine of claim 1 to 3, it is characterized in that 4, described cavity (16) is provided with sealing ring with cylinder (22) contact-making surface of described driving mechanism (2).
According to each described a kind of high viscosity fluid microscale spraying glue dropping machine of claim 1 to 3, it is characterized in that 5, the outside of described feeding machanism (4) adopts the tight fit mode to be with material storage tube retainer (42).
CNU2007200888278U 2007-12-07 2007-12-07 High viscosity fluid trace spraying and gluing device Expired - Lifetime CN201135944Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200888278U CN201135944Y (en) 2007-12-07 2007-12-07 High viscosity fluid trace spraying and gluing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200888278U CN201135944Y (en) 2007-12-07 2007-12-07 High viscosity fluid trace spraying and gluing device

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101480642B (en) * 2008-12-30 2011-07-27 大连华工创新科技有限公司 Multi-valve linkage glue-spraying device
CN102962170A (en) * 2012-11-16 2013-03-13 上海交通大学 High-temperature hot-melting micro-jet dispensing device with piezoelectric drive diaphragm
CN104415883A (en) * 2013-09-02 2015-03-18 深圳市腾盛工业设备有限公司 Jet glue dispensing valve and glue dispensing method thereof
CN108672230A (en) * 2018-05-04 2018-10-19 苏州诺登德智能科技有限公司 A kind of multistep speed regulation formula electricity drive gluing device
CN111741909A (en) * 2018-04-18 2020-10-02 三谷阀门有限公司 Quantitative injection unit
TWI767470B (en) * 2020-12-23 2022-06-11 萬潤科技股份有限公司 Liquid material discharge device and equipment using the liquid material discharge device
CN114653531A (en) * 2020-12-23 2022-06-24 万润科技股份有限公司 Liquid material extrusion device and equipment using same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101480642B (en) * 2008-12-30 2011-07-27 大连华工创新科技有限公司 Multi-valve linkage glue-spraying device
CN102962170A (en) * 2012-11-16 2013-03-13 上海交通大学 High-temperature hot-melting micro-jet dispensing device with piezoelectric drive diaphragm
CN102962170B (en) * 2012-11-16 2015-10-14 上海交通大学 The micro-specking adhesive dispenser of piezoelectric-driven diaphragm formula high temperature hot melt
CN104415883A (en) * 2013-09-02 2015-03-18 深圳市腾盛工业设备有限公司 Jet glue dispensing valve and glue dispensing method thereof
CN111741909A (en) * 2018-04-18 2020-10-02 三谷阀门有限公司 Quantitative injection unit
CN108672230A (en) * 2018-05-04 2018-10-19 苏州诺登德智能科技有限公司 A kind of multistep speed regulation formula electricity drive gluing device
TWI767470B (en) * 2020-12-23 2022-06-11 萬潤科技股份有限公司 Liquid material discharge device and equipment using the liquid material discharge device
CN114653531A (en) * 2020-12-23 2022-06-24 万润科技股份有限公司 Liquid material extrusion device and equipment using same
CN114653531B (en) * 2020-12-23 2024-05-03 万润科技股份有限公司 Liquid material extrusion device and equipment using same

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GR01 Patent grant
AV01 Patent right actively abandoned

Effective date of abandoning: 20071207

C25 Abandonment of patent right or utility model to avoid double patenting