CN103111402B - Jet type glue supply head - Google Patents
Jet type glue supply head Download PDFInfo
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- CN103111402B CN103111402B CN201310073952.1A CN201310073952A CN103111402B CN 103111402 B CN103111402 B CN 103111402B CN 201310073952 A CN201310073952 A CN 201310073952A CN 103111402 B CN103111402 B CN 103111402B
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Abstract
The invention relates to a jet type glue supply head. The jet type glue supply head comprises a base, a heating block, a first grade displacement and amplification mechanism, a second grade displacement and amplification mechanism, a striker, a striker return spring, a nozzle, a nozzle holder and a piezoelectric ceramic block, wherein the base is provided with a gel channel, the heating block is arranged in the base, the first grade displacement and amplification mechanism is provided with a plane internal diamond frame, a right stretching arm and a left stretching arm, and the right stretching arm and the left stretching arm are symmetrically arranged on the right side and the left side of the plane internal diamond frame; the second grade displacement and amplification mechanism is provided with a plane external diamond frame, the left stretching arm and the right stretching arm are symmetrically and horizontally connected with the left and right sides of the plane external diamond frame, the upper end of the plane external diamond frame is connected with the upper part of the base, the striker is perpendicularly arranged, the upper end of the striker supports the lower end of the plane external diamond frame, and the lower part of the striker is positioned in the base; and the striker return spring is arranged between the lower end of the plane external diamond frame and the wall of the base, and is sheathed on the striker, the nozzle is arranged on the base by the nozzle holder, the nozzle is right positioned under the striker, a nozzle hole is communicated with the gel channel of the base, and the piezoelectric ceramic block is arranged in the plane internal diamond frame.
Description
Technical field
The present invention relates to fluid Glue dripping head, especially relate to a kind of injection Glue dripping head.
Background technology
Glue dripping head is electronic product machining and equipment conventional in encapsulating.The point glue mode of existing fluid Glue dripping head is generally divided into contact and contactless.The principle of contact Glue dripping head carries out a glue with certain air pressure propelling fluid by the needle contact substrate of different pore size and element.There is several very formidable shortcoming in this some glue mode: first, the distance of contact glue dispensing valve during operation and between element is very little, if the location of element or substrate slightly offsets or is out of shape, is just easy to allow dispensing needle head and substrate or element cause damage.Secondly, in contact point glue, the size of some glue amount is controlled by the distance and speed of related movement adjusting glue dispensing valve and substrate according to the viscosity of colloid usually, but in the course of the work, the change of temperature can make colloid viscosity change, and causes a glue amount to control well.3rd, owing to being the some glue of contact property, be easy between glue dispensing valve and element cause wire drawing phenomenon, cause unnecessary adhesion at substrate and first pieces.4th, because often some glue point glue dispensing valve all will carry out the larger vertical direction motion of one stroke, the efficiency of invocation point glue is restricted.Contactless Glue dripping head, namely injecting type Glue dripping head overcomes above several shortcomings, and the opening and closing of applying piezoelectric ceramic contour response high-frequency element drives glue dispensing valve, greatly can improve the efficiency of a glue simultaneously.But in piezo jet formula Glue dripping head, because the elongation of piezoelectric ceramics is less, so need displacement amplifying mechanism, the elongation of piezoelectric ceramics is amplified, realize the stable injection of different colloid within the scope of certain viscosity with this.
Be typical Glue dripping head piezoelectric ceramics displacement amplifying mechanism schematic diagram in prior art see Fig. 1, Fig. 1.Piezoelectric ceramics displacement amplifying mechanism is single-stage enlarger, is provided with piezoelectric ceramics block A and plane formula diamond B.Its operation principle is carried out amplifying by the output displacement of piezoelectric ceramics block A and passes to striker (not shown), pumped by the periodicity of striker, clashes into realize spraying to the colloid in spray chamber.There is the problem being difficult to overcome in the point gum machine installing this enlarger: the first, and when mechanism installs, this enlarger does not have output displacement, is in the state with nozzle close contact, the bad control of its close contact degree when striker is installed; Second, the direction of motion of piezoelectric ceramics block A is inconsistent with the direction of motion of this enlarger mechanism output displacement, so need by piezoelectric ceramics block A horizontal setting, the fixing inconvenience of piezoelectric ceramics block A, simultaneously, due to Action of Gravity Field, the contact surface of piezoelectric ceramics block A and this enlarger can produce certain friction; 3rd, the displacement equations multiple of this enlarger is lower.
Summary of the invention
The object of this invention is to provide displacement amplifying mechanism output displacement large, volume is little, accurate positioning, and the one for point gum machine easy to use sprays Glue dripping head.
The technical solution adopted in the present invention is as follows:
A kind of injection Glue dripping head, comprises pedestal, heat block, one-level displacement amplifying mechanism, secondary displacement amplifying mechanism, striker, striker return spring, nozzle, nozzle carrier and piezoelectric ceramics block;
Pedestal is provided with colloid runner, heat block is located in pedestal, one-level displacement amplifying mechanism is provided with diamond in plane formula, Zola's semi-girder and right stretching arm, Zola's semi-girder and right stretching arm are symmetrically set in the diamond left and right sides in plane formula, secondary displacement amplifying mechanism is provided with the outer diamond of plane formula, Zola's semi-girder and the symmetrical level connection joint of right stretching arm and the outer diamond left and right sides of plane formula, the outer diamond upper end of plane formula is connected with pedestal top, striker is vertically arranged, striker upper end withstands on the outer diamond lower end of plane formula, striker bottom is positioned at pedestal, striker return spring is located at that plane formula is outer to be enclosed within striker between diamond lower end and base wall, nozzle is located on pedestal by nozzle carrier, nozzle is positioned at immediately below striker, the colloid flow passage of nozzle bore and described pedestal, piezoelectric ceramics block to be located in described plane formula in diamond, in described plane formula, diamond and the outer diamond of plane formula are in same plane.
Described pedestal is preferably plane formula rectangle frame.
Preferably be provided with abutment sleeve above described nozzle, abutment sleeve pushes down nozzle by pad, and nozzle is located better.Pad available buffer striker, to the shock of nozzle, improves the life-span of piezoelectric ceramics and whole mechanism.
Described Zola's semi-girder and right stretching arm are by the symmetrical level connection joint of screw and the outer diamond left and right sides of plane formula.
The outer diamond upper end of described plane formula connects preferably by lock-screw, the outer diamond upper end of plane formula is preferably also provided with guide pillar, adjustment screw and preloading spring, guide pillar is slidably matched with the guide groove being located at pedestal top, adjustment screw and guide pillar are spirally connected, preloading spring is located between the guide groove on guide pillar upper surface and pedestal top, and is enclosed within adjustment screw; Described guide groove and described striker and nozzle are same axial line.
Preferably heat block is provided with in described pedestal, heat block is located in the heat block installing hole in pedestal, heat block mounting hole site is by colloid runner, heat block is used for carrying out heat regulation temperature to the colloid flowing to nozzle in colloid runner, thus change the viscosity of colloid, be applicable to the higher colloid of viscosity and spray.
Preferably also be provided with heat dam in described pedestal, heat dam is located at by heat block installing hole, and heat dam is used for preventing the too high sealing ring that causes of temperature aging.
Described striker bottom is positioned at the set striker installing hole of pedestal, and on striker, cover has striker sealing ring, and the gap between striker and striker installing hole is sealed by striker sealing ring, can prevent colloid from revealing.Striker is also provided with the convex shoulder preventing striker sealing ring along striker down landing.
Compared with the prior art, operation principle of the present invention and beneficial effect as follows:
When piezoelectric ceramics extends under voltage effect, in the plane formula of one-level displacement amplifying mechanism, the top and bottom of diamond are subject to tension force and stretch outward, drive left and right towards inner compression.Because Zola's semi-girder of diamond in plane formula and right stretching arm are by the symmetrical level connection joint of screw and the outer diamond left and right sides of plane formula, therefore the top and bottom of the outer diamond of the plane formula of secondary displacement amplifying mechanism stretch out, because the top of the outer diamond of plane formula is fixed, therefore the lower surface of the outer diamond of plane formula moves down, thus driving striker to move downwardly to shut-off nozzle, colloid just ejects by shut-off nozzle process.As long as the present invention, by the suitable setting to firsts and seconds enlarger size, can realize amplifying the secondary of piezoelectric ceramics block institute output displacement, ensure higher resonant operational frequency simultaneously.By the upper-lower position of adjustment secondary displacement amplifying mechanism, the spacing between striker and nozzle just can be adjusted.Nozzle carrier of the present invention is detachable, by changeing nozzle carrier, the present invention can change according to actual needs the nozzle that (being generally 0.1 ~ 1mm) is not waited in aperture, or by the external other forms of nozzle of screw on mounted nozzle carrier, injection diameter can be made less.The present invention can overcome the existing point gum machine striker of single-stage rhombus enlarger and the nozzle distance of utilizing and controls more difficult and install inconvenient problem, simultaneously, larger displacement can be realized export, without the need to considering striker centering problem in installation process, after changing different spray nozzles, the spacing between striker and nozzle can adjust as required.Because one-level displacement amplifying mechanism and secondary displacement amplifying mechanism coexist same plane, like this can the volume of reducing mechanism, make whole device compacter.
Accompanying drawing explanation
Fig. 1 is typical Glue dripping head piezoelectric ceramics displacement amplifying mechanism schematic diagram in prior art.
Fig. 2 is the structural representation of the embodiment of the present invention.
Fig. 3 is the internal structure schematic diagram of the embodiment of the present invention.
Detailed description of the invention
See Fig. 2 and 3, the embodiment of the present invention comprises pedestal 1, heat block 21, one-level displacement amplifying mechanism, secondary displacement amplifying mechanism, striker 18, striker return spring 11, nozzle 15 and nozzle carrier 17 etc.
Pedestal 1 is plane formula rectangle frame, and pedestal 1 is provided with colloid runner 20.Heat block 21 is located in pedestal 1, and heat block 21 for carrying out heat regulation temperature to the colloid flowing to nozzle 15 in colloid runner 20, thus changes the viscosity of colloid, sprays to be applicable to the higher colloid of viscosity.One-level displacement amplifying mechanism is provided with diamond 8 in plane formula, piezoelectric ceramics block 9, Zola's semi-girder 81 and right stretching arm 82, and Zola's semi-girder 81 and right stretching arm 82 are directly connected with diamond 8 left and right sides in plane formula.Secondary displacement amplifying mechanism is provided with the outer diamond 6 of plane formula.Zola's semi-girder 81 and right stretching arm 82 are connected to outer diamond 6 left and right sides of plane formula by screw 7 symmetry.Outer diamond 6 upper end of plane formula is connected with pedestal 1 top by lock-screw 2, outer diamond 6 upper end of plane formula is also provided with guide pillar 61, adjustment screw 4 and preloading spring 5, guide pillar 61 is slidably matched with the guide groove 3 being located at pedestal 1 top, adjustment screw 4 is spirally connected with guide pillar 61, preloading spring 5 is located between guide groove 3 diapire on guide pillar 61 upper surface and pedestal 1 top, and is enclosed within adjustment screw 4.Guide groove 3 can to the outer diamond 6(secondary rhombus enlarger of plane formula) position, prevent it to be displaced sideways, guide groove 3 be same axial line with described striker 18 and nozzle 15, without the need to considering the centering problem of striker 18 and nozzle 15 during installation.Preloading spring 5 can carry out pretension to adjustment screw 4, prevents it from loosening.When needing to change the spacing between striker 18 and nozzle 15, first unclamp lock-screw 2, regulate adjustment bolt 4 again, the outer diamond 6 of plane formula just can be made to drive striker 18 to move up and down, again lock-screw 2 is locked when striker 18 is adjusted to correct position, the outer diamond 6(of such plane formula and secondary rhombus displacement amplifying mechanism) position be fixed again.The adjustment of striker upper-lower position can easily be carried out with the striker of the nozzle or different stroke that adapt to different length by which.Striker 18 is vertically arranged, and the striker installing hole of striker 18 top and outer diamond 6 lower end of plane formula is spirally connected, and firing pin lock jack panel 10 and striker 18 reverse thread are spirally connected, and striker 18 can be made so not easily to depart from from the screwed hole of enlarger lower surface.Striker 18 bottom is positioned at the striker installing hole of pedestal 1.On striker 18, cover has striker sealing ring 12, and the gap between striker 18 and striker installing hole is sealed by striker sealing ring 12, can prevent colloid from revealing.Striker 18 is also provided with the convex shoulder preventing striker sealing ring 12 along striker 18 down landing.Striker return spring 11 is located at that plane formula is outer to be enclosed within striker 18 between diamond 6 lower end and pedestal 1 madial wall, and nozzle 15 is installed on by nozzle carrier 17 in the nozzle installing hole in pedestal 1, and nozzle 15 is positioned at immediately below striker 18.Nozzle installing hole is communicated with the colloid runner 20 of described pedestal 1.Piezoelectric ceramics block 9 is located in described plane formula in diamond 8, and in described plane formula, diamond 8 is in same plane (coplanar) with the outer diamond 6 of plane formula, and the volume of energy reducing mechanism, makes whole device compacter like this.Be provided with abutment sleeve 14 above described nozzle 15, abutment sleeve 14 pushes down nozzle 15 by pad 16, and nozzle 15 is located better.Abutment sleeve 14 upper end cover has sealed nozzle circle 13.The shock of pad 16 available buffer striker 18 pairs of nozzles 15, improves the life-span of whole mechanism.Be provided with heat block 21 in pedestal 1, heat block 21 is located in the heat block installing hole in pedestal 1, and heat block 21 mounting hole site is other in colloid runner 20.Heat block 21 for carrying out heat regulation temperature to the colloid flowing to nozzle in colloid runner 20, thus changes the viscosity of colloid, is applicable to the higher colloid of viscosity like this and sprays.Pedestal 1 has heat dam 19 and 22, heat dam 19 and 22 is located at by heat block installing hole, and for preventing, temperature is too high causes striker sealing ring 12 ageing of performance to heat dam 19 and 22.In figs 2 and 3, label 23 is the set bolt be connected with outside cover plate.
When needing to change different nozzles 15, nozzle carrier set bolt of can outwarding winding, changes nozzle carrier 17 and nozzle 15.
Claims (8)
1. spray a Glue dripping head, comprise displacement amplifying mechanism, piezoelectric ceramics block, striker and nozzle; Characterized by further comprising pedestal, heat block, striker return spring and nozzle carrier;
Pedestal is provided with colloid runner, heat block is located in pedestal, described displacement amplifying mechanism is provided with one-level displacement amplifying mechanism and secondary displacement amplifying mechanism, one-level displacement amplifying mechanism is provided with diamond in plane formula, Zola's semi-girder and right stretching arm, Zola's semi-girder and right stretching arm are symmetrically set in the diamond left and right sides in plane formula, secondary displacement amplifying mechanism is provided with the outer diamond of plane formula, Zola's semi-girder and the symmetrical level connection joint of right stretching arm and the outer diamond left and right sides of plane formula, the outer diamond upper end of plane formula is connected with pedestal top, striker is vertically arranged, striker upper end withstands on the outer diamond lower end of plane formula, striker bottom is positioned at pedestal, striker return spring is located at that plane formula is outer to be enclosed within striker between diamond lower end and base wall, nozzle is located on pedestal by nozzle carrier, nozzle is positioned at immediately below striker, the colloid flow passage of nozzle bore and described pedestal, piezoelectric ceramics block to be located in described plane formula in diamond, in described plane formula, diamond and the outer diamond of plane formula are in same plane.
2. a kind of injection Glue dripping head as claimed in claim 1, is characterized in that described pedestal is plane formula rectangle frame.
3. a kind of injection Glue dripping head as claimed in claim 1, it is characterized in that being provided with abutment sleeve above described nozzle, abutment sleeve pushes down nozzle by pad.
4. a kind of injection Glue dripping head as claimed in claim 1, is characterized in that described Zola's semi-girder and right stretching arm are by the symmetrical level connection joint of screw and the outer diamond left and right sides of plane formula.
5. a kind of injection Glue dripping head as claimed in claim 1, it is characterized in that the outer diamond upper end of described plane formula is connected by lock-screw, the outer diamond upper end of plane formula is provided with guide pillar, adjustment screw and preloading spring, guide pillar is slidably matched with the guide groove being located at pedestal top, adjustment screw and guide pillar are spirally connected, preloading spring is located between the guide groove on guide pillar upper surface and pedestal top, and is enclosed within adjustment screw, and described guide groove and described striker and nozzle are same axial line.
6. a kind of injection Glue dripping head as claimed in claim 1, it is characterized in that being provided with heat block in described pedestal, heat block is located in the heat block installing hole in pedestal, and heat block mounting hole site is by colloid runner.
7. a kind of injection Glue dripping head as claimed in claim 1, it is characterized in that being provided with heat dam in described pedestal, heat dam is located at by heat block installing hole.
8. a kind of injection Glue dripping head as claimed in claim 1, it is characterized in that, described striker bottom is positioned at the set striker installing hole of pedestal, and on striker, cover has striker sealing ring, and the gap between striker and striker installing hole is sealed by striker sealing ring; Striker is provided with the convex shoulder preventing striker sealing ring along striker down landing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310073952.1A CN103111402B (en) | 2013-03-08 | 2013-03-08 | Jet type glue supply head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310073952.1A CN103111402B (en) | 2013-03-08 | 2013-03-08 | Jet type glue supply head |
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| CN103111402A CN103111402A (en) | 2013-05-22 |
| CN103111402B true CN103111402B (en) | 2015-05-27 |
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| CN201310073952.1A Active CN103111402B (en) | 2013-03-08 | 2013-03-08 | Jet type glue supply head |
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| CN104511405A (en) * | 2013-09-29 | 2015-04-15 | 上海三维精密模具制造有限公司 | Non-contact coating method |
| CN104010441A (en) * | 2014-05-29 | 2014-08-27 | 苏州锟恩电子科技有限公司 | PCB wire welding and dispensing machine easy to operate |
| CN104010442B (en) * | 2014-05-29 | 2017-03-15 | 苏州锟恩电子科技有限公司 | A kind of pcb board bonding wire of batch transfer operation and point gum machine |
| CN105855139B (en) * | 2015-01-23 | 2018-11-23 | 北京派和科技股份有限公司 | The fluid glue dispensing valve and point glue equipment of Piezoelectric Driving |
| CN105983506B (en) * | 2015-01-29 | 2018-05-18 | 北京派和科技股份有限公司 | Piezo jet valve and injection apparatus |
| CN105107680B (en) * | 2015-07-22 | 2017-04-19 | 中南大学 | Glue spraying valve with striker displacement real-time detection function and displacement detection method thereof |
| CN105673760B (en) * | 2016-03-07 | 2017-10-20 | 江苏大学 | A kind of adaptive transmission control perceived certainly based on piezoelectricity |
| CN106015685B (en) * | 2016-07-22 | 2018-09-18 | 北京控制工程研究所 | A kind of piezoelectricity ratio adjusting valve suitable for high pressure gas |
| CN107803311A (en) * | 2017-11-14 | 2018-03-16 | 中山市高远精密模具有限公司 | A kind of injecting glue control device |
| CN107716225A (en) * | 2017-11-29 | 2018-02-23 | 苏州特瑞特机器人有限公司 | A kind of high-frequency injection valve for dispensing glue |
| CN108638510A (en) * | 2018-04-13 | 2018-10-12 | 东莞理工学院 | A kind of micro- spray ejecting device of dropization piezoelectric type mechanical firing pin on demand |
| CN109834015B (en) * | 2019-01-17 | 2021-10-22 | 哈尔滨工业大学（深圳） | Colloid jet printing head and colloid jet method |
| CN112887545A (en) * | 2021-01-22 | 2021-06-01 | 维沃移动通信有限公司 | Camera module and electronic equipment |
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| CN202070458U (en) * | 2011-04-20 | 2011-12-14 | 吴海源 | Novel glue dispensing valve |
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| EP0219177A3 (en) * | 1985-10-18 | 1987-10-07 | Philips Patentverwaltung Gmbh | Method and apparatus for applying droplets of adhesive to a surface |
| DE4325143C1 (en) * | 1993-07-27 | 1994-12-22 | Itw Dynatec Gmbh Klebetechnik | Application unit for glue |
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| CN103111402A (en) | 2013-05-22 |
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