CN104307695A - Piezoelectric-static hybrid driven planar dispensing device - Google Patents
Piezoelectric-static hybrid driven planar dispensing device Download PDFInfo
- Publication number
- CN104307695A CN104307695A CN201410530825.4A CN201410530825A CN104307695A CN 104307695 A CN104307695 A CN 104307695A CN 201410530825 A CN201410530825 A CN 201410530825A CN 104307695 A CN104307695 A CN 104307695A
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- CN
- China
- Prior art keywords
- piezoelectric
- spray
- electrostatic
- glue
- piezoelectric vibrator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/053—Arrangements for supplying power, e.g. charging power
Abstract
The invention relates to a piezoelectric-static hybrid driven planar dispensing device, which comprises a static-piezoelectric ejecting head (1), a substrate electrode (2) and a working platform (3), wherein on the static-piezoelectric ejecting head (1), an ejecting cavity (13) with a variable sealed volume is formed by an ejecting head shell (11) and a piezoelectric vibrator (12); ejecting holes (111) are distributed in center of the bottom surface, opposite to the piezoelectric vibrator (12), of the ejecting head shell (11), and glue inlet holes (112) are distributed on the side face of the ejecting head shell (11); an emitting electrode plate (14) is distributed on the outer side of the bottom surface of the ejecting holes (111); the substrate electrode (2) is parallel to one side that the emitting electrode plate (14) distributed on the ejecting holes (111) points to; and the working platform (3) is distributed between the static-piezoelectric ejecting head (1) and the substrate electrode (2). The dispensing device disclosed by the invention has the characteristics of driving smaller drops and a larger clearance between the ejecting head and the working platform.
Description
Technical field
The invention belongs to material processing field, be specifically related to a kind of piezoelectricity-electrostatic hybrid-driven planar point adhesive dispenser.
Background technology
Plane dispensing technology has a wide range of applications in electronic product packaging field, before electronic device welding encapsulation, glue is coated with and is contained in circuit board surface by general employing spray site glue mode on demand, again electronic device is fixed to relevant position, the glue adopted can be conductive glue, directly complete the connection of device, also can make non-conductive glue, complete device through welding procedure again after device is tentatively fixing and connect.In this process adopt some glue modes to comprise the continuous plastic emitting formula of syringe and spray site glue formula, and spray site glue formula is generally used for size is little, required precision is high application scenario, mainly comprises pneumatic-valve injecting type and piezo jet formula in conventional spray formula point glue equipment.The point glue equipment of piezo jet formula has the feature of the aspects such as corresponding speed is fast, compact conformation, but because its driving force is limited, jet length is little, application is restricted.
Summary of the invention
In order to solve the problem of current piezoelectric type ejecting adhesive dispenser driving force deficiency, propose a kind of piezoelectricity-electrostatic hybrid-driven planar point adhesive dispenser, this planar point adhesive dispenser is made up of electrostatic pressure electrojet head, underlayer electrode and workbench three part, the glue sprayed from electrostatic pressure electrojet head in some glue process is subject to the effect of electric field force between electrostatic pressure electrojet head and underlayer electrode while dripping and being subject to piezoelectric vibrator active force, effectively can increase the jet length of shower nozzle.
To achieve these goals, the present invention is by the following technical solutions:
A kind of piezoelectricity-electrostatic hybrid-driven planar point adhesive dispenser of the present invention, comprise electrostatic pressure electrojet head, underlayer electrode and workbench, wherein: on described electrostatic pressure electric injector, sealing is formed and the spray chamber of variable volume by injector head housing and piezoelectric vibrator, bottom center relative with piezoelectric vibrator on injector head housing is furnished with spray-hole, injector head housing side is furnished with glue feeding opening, is furnished with an emission electrode plate in the outside of bottom surface, spray-hole place; Described underlayer electrode is parallel to emission electrode plate and is arranged in side pointed by spray-hole; Described workbench is arranged between electrostatic pressure electrojet head and underlayer electrode.
Described piezoelectric vibrator is as the driving original paper of electrostatic pressure electrojet head, multiple constituted mode can be adopted, as adopted the composite construction of the single-chip structure of a slice piezoelectric ceramic thin sheet formation bonding with a slice elastic base plate, the double wafer structure of two panels piezoelectric ceramic piece formation bonding with a slice elastic base plate or piezoelectric stack and the bonding formation of elastic base plate.
A constant voltage is applied between described emission electrode plate and underlayer electrode, for forming a steady electric field between, adopt described emission electrode plate that described steady electric field can be made closer to parallel electric field, be conducive to fine droplet and keep its directionality when moving.
During work, the glue to be sprayed with certain pressure is passed at glue feeding opening place, described glue pressure and sprinkler pressure loss are balanced each other, the loss of described sprinkler pressure refer to comprise under piezoelectric vibrator inactive state glue flow through glue feeding opening, spray-hole and glue at spray-hole place form surface tension that gas-liquid interface formed in interior pressure summation, when piezoelectric vibrator does not move, glue rests on spray-hole place.When needing injection glue to drip, there is the cyclic bending along central axial direction in piezoelectric vibrator under the effect of alternating voltage, sprays cavity pressure and change.When spray chamber pressure increases: a part of glue forms required glue from spray-hole ejection and drips, and described glue drips with the electric charge identical with emission electrode plate, while there is the inertia force that injection produces, be subject to the effect pointing to underlayer electrode direction electric field force in electric field; Another part glue refluxes from glue feeding opening, and after glue drips ejection, glue forms gas-liquid interface again at spray-hole place.When spray chamber pressure reduces, due to the effect of gas-liquid interface, gas can not enter spray chamber from spray-hole, and glue under the acting in conjunction of glue pressure and spray chamber negative pressure, can enter spray chamber from glue feeding opening, complete an injection cycle.According to concrete process requirements, electrostatic pressure electrojet head and the direction that workbench is being parallel to underlayer electrode are moved, and workbench can move perpendicular to hearth electrode direction simultaneously, finally completes the some glue process of whole three-dimensional planar.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of piezoelectricity of the present invention-electrostatic hybrid-driven planar point adhesive dispenser.
Detailed description of the invention
With reference to Fig. 1, piezoelectricity of the present invention-electrostatic hybrid-driven planar point adhesive dispenser is by electrostatic pressure electrojet head 1, underlayer electrode 2 and workbench 3 are formed, wherein: electrostatic pressure electrojet head 1, underlayer electrode 2 and workbench 3, wherein: on described electrostatic pressure electric injector 1, sealing is formed and the spray chamber 13 of variable volume by injector head housing 11 and piezoelectric vibrator 12, bottom center relative with piezoelectric vibrator 12 on injector head housing 11 is furnished with spray-hole 111, injector head housing 11 side is being furnished with glue feeding opening 112, an emission electrode plate 14 is furnished with in the outside of bottom surface, spray-hole 111 place, described underlayer electrode 2 is parallel to emission electrode plate 14 and is arranged in side pointed by spray-hole 111, described workbench 3 is arranged between electrostatic pressure electrojet head 1 and underlayer electrode 2.
Described piezoelectric vibrator 12, as the driving original paper of electrostatic pressure electrojet head 1, adopts the single-chip structure of a slice piezoelectric ceramic thin sheet formation bonding with a slice elastic base plate.A constant voltage is applied between described emission electrode plate 14 and underlayer electrode 2.
Claims (2)
1. piezoelectricity-electrostatic hybrid-driven planar point adhesive dispenser, comprise: electrostatic pressure electrojet head (1), underlayer electrode (2) and workbench (3), wherein: on described electrostatic pressure electric injector (1), sealing is formed and the spray chamber of variable volume (13) by injector head housing (11) and piezoelectric vibrator (12), at injector head housing (11), the upper bottom center relative with piezoelectric vibrator (12) is furnished with spray-hole (111), injector head housing (11) side is being furnished with glue feeding opening (112), an emission electrode plate (14) is furnished with in the outside of spray-hole (111) bottom surface, place, described underlayer electrode (2) is parallel to emission electrode plate (14) and is arranged in the pointed side of spray-hole (111), described workbench (3) is arranged between electrostatic pressure electrojet head (1) and underlayer electrode (2).
2. piezoelectricity according to claim 1-electrostatic hybrid-driven planar point adhesive dispenser, is characterized in that: described piezoelectric vibrator (12) adopts the composite construction of the single-chip structure of a slice piezoelectric ceramic thin sheet formation bonding with a slice elastic base plate, the double wafer structure of two panels piezoelectric ceramic piece formation bonding with a slice elastic base plate or piezoelectric stack and the bonding formation of elastic base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410530825.4A CN104307695A (en) | 2014-10-09 | 2014-10-09 | Piezoelectric-static hybrid driven planar dispensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410530825.4A CN104307695A (en) | 2014-10-09 | 2014-10-09 | Piezoelectric-static hybrid driven planar dispensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104307695A true CN104307695A (en) | 2015-01-28 |
Family
ID=52363086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410530825.4A Pending CN104307695A (en) | 2014-10-09 | 2014-10-09 | Piezoelectric-static hybrid driven planar dispensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104307695A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019137069A1 (en) * | 2018-01-12 | 2019-07-18 | 太仓卡兰平汽车零部件有限公司 | Spring surface flocking method |
Citations (9)
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| CN1695813A (en) * | 2005-06-20 | 2005-11-16 | 张爱华 | Method and system of electric projectile through high-speed liquid for preparing superfine material |
| CN1832810A (en) * | 2003-08-08 | 2006-09-13 | 夏普株式会社 | Electrostatic suction type fluid discharge device, electrostatic suction type fluid discharge method, and plot pattern formation method using the same |
| CN101045225A (en) * | 2007-04-28 | 2007-10-03 | 武汉科技大学 | Liquid super-fine atomization apparatus by using high voltage static electricity |
| CN201147741Y (en) * | 2007-12-20 | 2008-11-12 | 上海富奇凡机电科技有限公司 | Piezoelectric microsphere sprayer head |
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| CN204107780U (en) * | 2014-10-09 | 2015-01-21 | 吉林大学 | A kind of piezoelectricity-electrostatic hybrid-driven planar point adhesive dispenser |
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2014
- 2014-10-09 CN CN201410530825.4A patent/CN104307695A/en active Pending
Patent Citations (9)
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| CN1832810A (en) * | 2003-08-08 | 2006-09-13 | 夏普株式会社 | Electrostatic suction type fluid discharge device, electrostatic suction type fluid discharge method, and plot pattern formation method using the same |
| CN1695813A (en) * | 2005-06-20 | 2005-11-16 | 张爱华 | Method and system of electric projectile through high-speed liquid for preparing superfine material |
| CN101045225A (en) * | 2007-04-28 | 2007-10-03 | 武汉科技大学 | Liquid super-fine atomization apparatus by using high voltage static electricity |
| CN201147741Y (en) * | 2007-12-20 | 2008-11-12 | 上海富奇凡机电科技有限公司 | Piezoelectric microsphere sprayer head |
| US20120126041A1 (en) * | 2009-08-26 | 2012-05-24 | Panasonic Corporation | Discharge device and electrostatic atomization device comprising same |
| CN201504226U (en) * | 2009-09-11 | 2010-06-09 | 浙江嘉康电子股份有限公司 | Ceramic shell chip frequency device |
| CN102974487A (en) * | 2012-12-27 | 2013-03-20 | 苏州弘贸纺织有限公司 | Electrostatic pattern flocking device |
| CN103072084A (en) * | 2013-02-04 | 2013-05-01 | 青岛理工大学 | Nano fluid electrostatic atomizing controllable jet stream minimal lubricating and grinding system |
| CN204107780U (en) * | 2014-10-09 | 2015-01-21 | 吉林大学 | A kind of piezoelectricity-electrostatic hybrid-driven planar point adhesive dispenser |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019137069A1 (en) * | 2018-01-12 | 2019-07-18 | 太仓卡兰平汽车零部件有限公司 | Spring surface flocking method |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20150128 |