CN209174188U - The micro- spray valve of Piezoelectric Ceramic - Google Patents
The micro- spray valve of Piezoelectric Ceramic Download PDFInfo
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- CN209174188U CN209174188U CN201821728812.8U CN201821728812U CN209174188U CN 209174188 U CN209174188 U CN 209174188U CN 201821728812 U CN201821728812 U CN 201821728812U CN 209174188 U CN209174188 U CN 209174188U
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Abstract
The utility model discloses a kind of micro- spray valves of Piezoelectric Ceramic, power ontology, level-one micro displacement magnifying mechanism, second level micro displacement magnifying mechanism and striker including being sequentially connected setting, piezo ceramic element is provided in the power ontology, piezo ceramic element is for triggering the movement of level-one micro displacement magnifying mechanism, level-one micro displacement magnifying mechanism connects for triggering the movement of second level micro displacement magnifying mechanism, second level micro displacement magnifying mechanism and striker axis and triggers striker movement；The striker and liquid stream seat are cooperatively connected, and the liquid stream seat also connect with liquid feed device, nozzle is additionally provided on the liquid outlet of the liquid stream seat, spring reset component is additionally provided on the striker.The utility model has high injection frequency, and applicable range of viscosities is wide, and cost is relatively low.
Description
Technical field
The utility model relates to dispensing fields, and in particular to a kind of micro- spray valve of Piezoelectric Ceramic.
Background technique
Fluid dispensing technology is a key technology in microelectronics Packaging, can be divided into contact according to dispensing principle difference
Dispensing and contactless dispensing, contact dispensing frequency is low, is not suitable for small space dispensing, registration is poor, with electronics industry
Requirement of the chip for the stability and dispensing precision of glue amount is higher and higher, and the demand in dispensing field is to contactless dispensing
Transformation, but the dispenser system that the current country is more than 70% still uses traditional contact dispensing, has opened both at home and abroad at present
The research and development of contact glue dispensing valve have been opened up, it is external to there is the product of several money Piezoelectric Ceramics to appear on the market.But it is expensive, it is applicable in
Range of viscosities is small；
In the prior art, glue dispensing valve is based on Piezoelectric Ceramic, therefore is generally used enlarger and amplifies driving force
And be micro- spouted power, enlarger generally uses diamond shape enlarger, triangle enlarger, two-way piezoelectric ceramics enlarger,
Lever enlarger.
But most injection valves based on Piezoelectric Ceramic principle domestic at present all contain only level-one micro-displacement enlarger
Structure, the deficiency of amplification factor cause injection valve striker stroke smaller, so that the viscosity range for realizing micro- glue spraying liquid is limited, so that
The most of injection valves of domestic market are only applicable to middle low-viscosity range.
And domestic existing product enlarger demand machining accuracy is high, needs the piezoelectric element of big output displacement,
So that with high costs, be not suitable for medium and small producer and change the outfit on a large scale use.
In use, there is derivative movement in product enlarger output displacement, and existing product is become using the flexible of bar
Shape eliminates derivative movement, but will lead to component wear and become larger, and energy consumption becomes larger.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of micro- spray valves of Piezoelectric Ceramic, have high injection frequency
Rate, applicable range of viscosities is wide, and cost is relatively low.
In order to solve the above-mentioned technical problem, the utility model provides a kind of micro- spray valve of Piezoelectric Ceramic, including successively
Power ontology, level-one micro displacement magnifying mechanism, second level micro displacement magnifying mechanism and the striker for connecting setting, in the power ontology
It is provided with piezo ceramic element, piezo ceramic element is for triggering the movement of level-one micro displacement magnifying mechanism, the amplification of level-one micro-displacement
Mechanism connects for triggering the movement of second level micro displacement magnifying mechanism, second level micro displacement magnifying mechanism and striker axis and triggers striker shifting
It is dynamic；
The striker and liquid stream seat are cooperatively connected, and the liquid stream seat is also connect with liquid feed device, and the liquid stream seat goes out liquid
It is additionally provided with nozzle on mouthful, spring reset component is additionally provided on the striker.
Further, the level-one micro displacement magnifying mechanism and second level micro displacement magnifying mechanism are lever amplifying mechanism.
Further, the spring reset component includes guide holder, spring and adjustment seat, and the guide holder is set in striker
Surface, the adjustment seat are connected through a screw thread with striker surface, and the spring is set in the striker between guide holder and adjustment seat
On surface.
Further, displacement position-limiting protrusion is provided on the striker.
Further, installation groove is provided on the corresponding liquid stream seat of the nozzle, the nozzle is arranged in installation groove
It is interior and fixed by pressing plate, it is provided at least two salient points on the pressing plate, is arranged on the corresponding liquid stream seat of the salient point limited
Position groove, the salient point and limiting groove cooperation position.
Further, it is additionally provided with seal receptacle on the liquid stream seat, is provided with guide sleeve in the seal receptacle.
Further, the striker, which is located at the end and corresponding nozzle of nozzle side, is provided with curved surface.
It further, further include the first temperature sensor and setting in the intrinsic coolant flow channel of power, the temperature
Sensor is used to detect the temperature of piezo ceramic element, carries out negative feedback control composition cooling system by Pid algorithm and controls back
Road.
Further, second temperature sensor and viscosity sensor, second temperature sensor are provided in the liquid stream seat
It is used to detect the viscosity and temperature of fluid in liquid stream seat with viscosity sensor, carries out negative feedback control using Pid algorithm and constitute stream
Body flow constant control loop.
Further, further include laser displacement sensor for detecting pin motion amount and/or for detecting blow-off point
The vision collecting device of information carries out negative feedback control using Pid algorithm and constitutes pin motion control loop.
The utility model has the beneficial effects that
After level-one micro displacement magnifying mechanism and the combination of second level micro displacement magnifying mechanism, times magnification can greatly be promoted
Number is high, and output displacement is big, and applicable situation is wide；
After the amplification factor of mechanism is high, demand piezo ceramic element output displacement can become smaller, so that overall price drops
Low, in addition, enlarger is insensitive to machining accuracy, price expense is relatively low, can effectively reduce whole cost；
It connects in such a way that axis connects between second level micro displacement magnifying mechanism and striker, and cooperates with spring reset component
Afterwards, derivative movement can be effectively eliminated, component service life is improved, reduces maintenance cost.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the cross section structure schematic diagram of the utility model；
Fig. 3 is the nozzle cross-section schematic diagram of the utility model；
Fig. 4 is the pressing plate schematic diagram of the utility model.
Figure label explanation: 1, power ontology, 2, level-one micro displacement magnifying mechanism, 3, second level micro displacement magnifying mechanism, 4,
Striker, 5, piezo ceramic element, 6, liquid stream seat, 7, liquid feed device, 8, nozzle, 9, spring reset component, 10, guide holder, 11, bullet
Spring, 12, adjustment seat, 13, displacement position-limiting protrusion, 15, pressing plate, 16, seal receptacle, 17, guide sleeve, 18, coolant flow channel.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art
The utility model may be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.
Shown in referring to Figures 1 and 2, an embodiment of the micro- spray valve of the Piezoelectric Ceramic of the utility model, micro- spray valve body
Product is small comprising is sequentially connected the power ontology 1, level-one micro displacement magnifying mechanism 2,3 and of second level micro displacement magnifying mechanism of setting
Striker 4, piezo ceramic element 5 is provided in power ontology, and piezo ceramic element is dynamic for triggering level-one micro displacement magnifying mechanism
Make, level-one micro displacement magnifying mechanism is for triggering the movement of second level micro displacement magnifying mechanism, second level micro displacement magnifying mechanism and striker
Axis connects and triggers striker movement；It, can be very big after level-one micro displacement magnifying mechanism and the combination of second level micro displacement magnifying mechanism
Promotion amplification factor it is high, output displacement is big, and applicable situation is wide, after the amplification factor of mechanism is high, demand piezo ceramic element
Output displacement can become smaller so that overall price reduces, in addition, enlarger is insensitive to machining accuracy, price expense also compared with
It is low, whole cost can be effectively reduced；The power of piezo ceramic element mentions striker by way of axis company after amplification
Power for power, at this to pull striker mobile；
Striker and liquid stream seat 6 are cooperatively connected, and T-shaped runner is provided in liquid stream seat, and liquid stream seat also connects with liquid feed device 7
It connects, nozzle 8 is additionally provided on the liquid outlet of liquid stream seat, spring reset component 9 is additionally provided on striker；After striker is pulled, T
It is light condition in the runner of font, fluid is fed into filling, subsequent piezo ceramic element in empty space by liquid feed device
It stops working, striker pulls power disappearance, and firing pin spring reset assembly resets, i.e., the power mobile with pulling striker is on the contrary, striker
While resetting, the fluid of empty space is squeezed towards nozzle, is finally sprayed from nozzle, primary spraying is completed.
Wherein, level-one micro displacement magnifying mechanism and second level micro displacement magnifying mechanism are lever amplifying mechanism, lever amplification
Mechanism is semicircle flexible hinge structure, the interconnecting piece composition flat flexible hinge knot of second level micro displacement magnifying mechanism and striker
Structure, flat flexible hinge can effectively eliminate derivative fortune by the presence in gap there are joint gaps for shaft junction
It is dynamic, component service life is improved, maintenance cost is reduced.
Above-mentioned spring reset component includes guide holder 10, spring 11 and adjustment seat 12, and guide holder is set in striker surface,
Adjustment seat is connected through a screw thread with striker surface, and spring is set on the striker surface between guide holder and adjustment seat, guide holder
Be fixed setting, position remains unchanged, striker when pulled, spring is compressed, when striker motive force disappear when, spring
Compressed deformation power is released, and pushes adjustment seat and striker is driven to reset, and adjustment seat passes through the adjustable setting position of screw thread,
It is i.e. adjustable relative to the spacing between guide holder, so as to adjust the pretightning force of spring, to control striker reset speed, i.e.,
Adjust micro- spray effect.Displacement position-limiting protrusion 13 is provided on striker, which can limit the phase of striker with nozzle
To position, naturally it is also possible to be provided with stop nut on the displacement position-limiting protrusion, adjusted by the position of stop nut so that
The relative position of striker and nozzle is adjustable, reduces machining accuracy.
And it is additionally provided with seal receptacle 16 on liquid stream seat, guide sleeve 17 is provided in seal receptacle, seal receptacle is for avoiding
Reverse flow of fluids, guide sleeve are also able to maintain the moving direction of striker, improve stability in use.
Lubricator is provided in above-mentioned multiple components being set on striker, lubricator can be solid lubrication portion
Part effectively improves the striker service life so that guaranteeing striker when moving has good lubricity and smooth degree.
Referring to shown in Fig. 3 and Fig. 4, installation groove is provided on the corresponding liquid stream seat of nozzle, nozzle setting is recessed in installation
It is in slot and fixed by pressing plate 15, at least two salient points 151 are provided on pressing plate, are provided with limit on the corresponding liquid stream seat of salient point
Groove, salient point and limiting groove cooperation position.According to use demand, nozzle is replaced, and installation groove can be quick
Nozzle mounting position is positioned, tentatively fixed effect is played, and is cooperated between pressing plate and liquid stream seat by salient point and limiting groove
Positioning, realizes the effect of automatic centering, further increases the precision of nozzle mounting position, achievees the effect that without detection.
Above-mentioned striker, which is located at the end and corresponding nozzle of nozzle side, is provided with curved surface, which is yeast
Rate curved surface improves jeting effect and service life.
It in one embodiment, further include the first temperature sensor and setting in the intrinsic coolant flow channel 18 of power, temperature
Degree sensor is used to detect the temperature of piezo ceramic element, carries out negative feedback control using Pid algorithm and constitutes cooling system control
Circuit can carry out control operating temperature to piezo ceramic element by Cooling System Control Circuit, when temperature is excessively high, need
It is quickly cooled down cooling, when temperature is in suitable range, is then stopped working, so that the service life of piezo ceramic element is improved,
Also Energy in use is reduced.
In one embodiment, second temperature sensor and viscosity sensor, second temperature sensor are provided in liquid stream seat
It is used to detect the viscosity and temperature of fluid in liquid stream seat with viscosity sensor, carries out negative feedback control using Pid algorithm and constitute stream
Body flow constant control loop can greatly improve the stability sprayed to fluid by fluid flow constant control loop, from
And guarantee service precision and using effect.
In one embodiment, further include laser displacement sensor for detecting pin motion amount and/or for detecting spray
The vision collecting device for putting information out carries out negative feedback control using Pid algorithm and constitutes pin motion control loop, passes through striker
Bit andits control circuit can control piezo ceramic element, so that the output shift quantity to piezo ceramic element is adjusted
It is whole, the moving distance of striker can be changed, to change in the form of micro- spray valve blow-off point, improve service precision and effect.
Above embodiments are only preferred embodiments for fully illustrating the utility model, the guarantor of the utility model
It is without being limited thereto to protect range.Those skilled in the art made equivalent substitute or transformation on the basis of the utility model,
It is within the protection scope of the utility model.The protection scope of the utility model is subject to claims.
Claims (10)
1. a kind of micro- spray valve of Piezoelectric Ceramic, which is characterized in that power ontology, level-one micro-displacement including being sequentially connected setting
Enlarger, second level micro displacement magnifying mechanism and striker are provided with piezo ceramic element, piezoelectric ceramics group in the power ontology
Part is for triggering the movement of level-one micro displacement magnifying mechanism, and level-one micro displacement magnifying mechanism is for triggering second level micro displacement magnifying mechanism
Movement, second level micro displacement magnifying mechanism and striker axis connect and trigger striker movement；
The striker and liquid stream seat are cooperatively connected, and the liquid stream seat is also connect with liquid feed device, on the liquid outlet of the liquid stream seat
It is additionally provided with nozzle, spring reset component is additionally provided on the striker.
2. the micro- spray valve of Piezoelectric Ceramic as described in claim 1, which is characterized in that the level-one micro displacement magnifying mechanism and
Second level micro displacement magnifying mechanism is lever amplifying mechanism.
3. the micro- spray valve of Piezoelectric Ceramic as described in claim 1, which is characterized in that the spring reset component includes guiding
Seat, spring and adjustment seat, the guide holder are set in striker surface, and the adjustment seat is connected through a screw thread with striker surface, institute
It states on the striker surface that spring is set between guide holder and adjustment seat.
4. the micro- spray valve of Piezoelectric Ceramic as described in claim 1, which is characterized in that be provided with displacement position-limiting on the striker
Protrusion.
5. the micro- spray valve of Piezoelectric Ceramic as described in claim 1, which is characterized in that set on the corresponding liquid stream seat of the nozzle
It is equipped with installation groove, the nozzle is arranged in installation groove and fixes by pressing plate, is provided at least two on the pressing plate
Salient point is provided with limiting groove on the corresponding liquid stream seat of the salient point, and the salient point and limiting groove cooperation position.
6. the micro- spray valve of Piezoelectric Ceramic as described in claim 1, which is characterized in that be additionally provided with sealing on the liquid stream seat
, guide sleeve is provided in the seal receptacle.
7. the micro- spray valve of Piezoelectric Ceramic as described in claim 1, which is characterized in that the striker is located at the end of nozzle side
Curved surface is provided at portion and corresponding nozzle.
8. the micro- spray valve of Piezoelectric Ceramic as described in claim 1, which is characterized in that further include the first temperature sensor and
Setting is used to detect the temperature of piezo ceramic element, is calculated by Pid in the intrinsic coolant flow channel of power, the temperature sensor
Method carries out negative feedback control and constitutes Cooling System Control Circuit.
9. the micro- spray valve of Piezoelectric Ceramic as described in claim 1, which is characterized in that be provided with the second temperature in the liquid stream seat
Sensor and viscosity sensor are spent, second temperature sensor and viscosity sensor are used to detect the viscosity and temperature of fluid in liquid stream seat
Degree carries out negative feedback control using Pid algorithm and constitutes fluid flow constant control loop.
10. the micro- spray valve of Piezoelectric Ceramic as described in claim 1, which is characterized in that further include for detecting pin motion
The laser displacement sensor of amount and/or vision collecting device for detecting blow-off point information utilize Pid algorithm to carry out negative-feedback
Control constitutes pin motion control loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821728812.8U CN209174188U (en) | 2018-10-24 | 2018-10-24 | The micro- spray valve of Piezoelectric Ceramic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821728812.8U CN209174188U (en) | 2018-10-24 | 2018-10-24 | The micro- spray valve of Piezoelectric Ceramic |
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| Publication Number | Publication Date |
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| CN209174188U true CN209174188U (en) | 2019-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821728812.8U Active CN209174188U (en) | 2018-10-24 | 2018-10-24 | The micro- spray valve of Piezoelectric Ceramic |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109092584A (en) * | 2018-10-24 | 2018-12-28 | 江苏集萃微纳自动化系统与装备技术研究所有限公司 | The micro- spray valve of Piezoelectric Ceramic |
| CN114749290A (en) * | 2022-03-22 | 2022-07-15 | 中车青岛四方机车车辆股份有限公司 | Spraying device |
-
2018
- 2018-10-24 CN CN201821728812.8U patent/CN209174188U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109092584A (en) * | 2018-10-24 | 2018-12-28 | 江苏集萃微纳自动化系统与装备技术研究所有限公司 | The micro- spray valve of Piezoelectric Ceramic |
| CN114749290A (en) * | 2022-03-22 | 2022-07-15 | 中车青岛四方机车车辆股份有限公司 | Spraying device |
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