CN114515676A - Piezoelectric ceramic injection valve - Google Patents
Piezoelectric ceramic injection valve Download PDFInfo
- Publication number
- CN114515676A CN114515676A CN202011307238.0A CN202011307238A CN114515676A CN 114515676 A CN114515676 A CN 114515676A CN 202011307238 A CN202011307238 A CN 202011307238A CN 114515676 A CN114515676 A CN 114515676A
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- valve body
- nozzle
- pin
- piezoelectric ceramic
- firing pin
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- 239000000919 ceramic Substances 0.000 title claims abstract description 43
- 238000002347 injection Methods 0.000 title claims abstract description 28
- 239000007924 injection Substances 0.000 title claims abstract description 28
- 239000003292 glue Substances 0.000 claims abstract description 45
- 238000010304 firing Methods 0.000 claims abstract description 36
- 230000000903 blocking effect Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 239000000084 colloidal system Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004100 electronic packaging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
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- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a piezoelectric ceramic injection valve which comprises a valve body with an accommodating cavity, a pressure lever, a swinging lever, a firing pin and a glue feeding mechanism, wherein a rotary adjusting component is installed at the upper part of the valve body; the lower end of the firing pin corresponds to the impact surface of the nozzle, and a second spring is arranged between the upper end surface of the firing pin and the guide blocking body. The invention further realizes the stable installation of the nozzle and avoids the shaking and deviation of the nozzle in the high-frequency impact process.
Description
Technical Field
The invention relates to the field of dispensing equipment, in particular to a piezoelectric ceramic injection valve.
Background
The piezoelectric injection dispensing valve is widely applied to the field of electronic packaging, non-contact injection of glue can be realized by adopting piezoelectric injection dispensing, non-contact work can be realized, and meanwhile, the piezoelectric injection dispensing valve is high in efficiency and precision. Although piezo jet dispensing has many advantages, there are still disadvantages in application.
In order to adapt to high-precision dispensing, the relative position between the nozzle and the firing pin needs to be strictly controlled in the assembly process of the piezoelectric injection valve, in the prior art, the position between the nozzle and the firing pin is mainly adjusted in a manual mode, but the requirement on the experience of personnel is high, and the position of the nozzle and the firing pin is easily deviated to a certain extent in each reloading process through manual adjustment, so that the consistency of products is affected.
Disclosure of Invention
The invention aims to provide a piezoelectric ceramic injection valve, which further realizes the stable installation of a nozzle and avoids the shaking and deviation of the nozzle in the high-frequency impact process.
In order to achieve the purpose, the invention adopts the technical scheme that: a piezoelectric ceramic injection valve comprises a valve body with an accommodating cavity, a pressure rod, a swinging rod, a firing pin and a glue feeding mechanism, wherein the glue feeding mechanism is arranged on the lower end surface of the valve body;
the rotary adjusting component is mounted at the upper part of the valve body, a hanging rack is arranged in the accommodating cavity of the valve body, a first groove and a lower convex strip are respectively arranged on the upper surface and the lower surface of the accommodating cavity of the valve body, an upper convex strip is arranged on the upper surface of the left end of the compression bar, and a first spring is arranged between the lower surface of the right end of the compression bar and the hanging rack;
the lower end of the rotary adjusting assembly is in contact with the upper surface of the right end of the pressing rod, and when the lower end of the rotary adjusting assembly moves up and down, the upper convex strip of the pressing rod can rotate around the first groove in the accommodating cavity;
the lower surface of the left end of the swinging rod is provided with a second groove for the lower convex strip to be embedded in, a supporting spring is arranged between the lower surface of the middle part of the swinging rod and the bottom of the accommodating cavity, one side of the upper surface of the swinging rod, which is close to the left end of the swinging rod, is provided with a positioning convex strip, and the lower surface of the right end of the swinging rod is connected with the firing pin;
the lower surface of the pressure rod is provided with a first arc-shaped groove close to the left end of the pressure rod, the piezoelectric ceramic stack column is positioned between the pressure rod and the oscillating rod and close to one side of the left end, the upper end surface of the piezoelectric ceramic stack column is connected with the pressure rod through a second ball positioned in the first arc-shaped groove of the pressure rod and a second arc-shaped groove of the piezoelectric ceramic stack column, and the groove on the lower end surface of the piezoelectric ceramic stack column is used for embedding and rotatably connecting a positioning convex strip of the oscillating rod;
the rotary adjusting assembly further comprises a rotary pin and a travelling threaded column, the rotary pin and the travelling threaded column are in matched connection through a pair of pin parts and a concave pin groove, the travelling threaded column is in matched connection with the installation through hole of the valve body through threads, and the travelling threaded column of the rotary adjusting assembly is in hinged connection with the pressure rod through a sphere;
the glue inlet mechanism comprises a glue storage cavity in the valve body and a glue inlet pipeline communicated with the glue storage cavity, the glue storage cavity mainly comprises a nozzle nut arranged at an opening of the valve body and a nozzle arranged on the lower end face of the nozzle nut, and the nozzle nut and the nozzle are arranged in a locking nut connected with the valve body;
the lower end of the firing pin corresponds to the impact surface of the nozzle, and a second spring is arranged between the upper end surface of the firing pin and the guide blocking body.
The further improved scheme in the technical scheme is as follows:
1. in the scheme, the supporting spring is sleeved on the convex pin column of the swinging rod.
2. In the scheme, the convex pin column is connected with the valve body through threads.
3. In the above scheme, the lower end of the striker is embedded into the through hole of the nozzle nut.
4. In the above scheme, the lower end surface of the firing pin is an arc surface, and the impact surface of the corresponding nozzle is an arc concave surface.
5. In the above scheme, the glue feeding mechanism is connected to the lower end face of the valve body through at least 2 bolts.
6. In the above scheme, the stiffness coefficient of the support spring is greater than the stiffness coefficient of the second spring.
7. In the above scheme, a sealing ring is arranged between the outer side wall of the nozzle nut and the valve body.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. according to the piezoelectric ceramic injection valve, the precise adjustment of the position of the striker can be realized through the linkage arrangement of the structures among the rotary adjusting assembly, the pressure rod and the oscillating rod, and the precision adjustment does not depend on the experience of people, so that the gap between the striker and the nozzle is always kept consistent, and the precision and consistency of dispensing are improved; furthermore, the rotary adjusting assembly further comprises a rotary pin and a travelling threaded column, the rotary pin and the travelling threaded column are connected through a pair of pin portions and a concave pin groove in a matched mode, the travelling threaded column is connected with the installation through hole of the valve body in a matched mode through threads, and the travelling threaded column of the rotary adjusting assembly is connected with the pressure rod in a hinged mode through a spherical mode, so that the stroke of the firing pin can be accurately adjusted, and different dispensing requirements can be met.
2. The lower end of the rotary adjusting component of the piezoelectric ceramic injection valve is in contact with the upper surface of the right end of the pressure rod, when the lower end of the rotary adjusting component moves up and down, the upper convex strip of the pressure rod can rotate around the first groove on the accommodating cavity, the glue storage cavity mainly comprises a nozzle nut arranged at the opening of the valve body and a nozzle positioned on the lower end surface of the nozzle nut, the nozzle nut and the nozzle are positioned in a locking nut connected with the valve body, and the stable installation of the nozzle is further realized under the condition that the gap between a firing pin and the nozzle is adjustable through the connection arrangement of the nozzle nut, the locking nut and the valve body, so that the shaking deviation of the nozzle in the high-frequency impact process is avoided, the dispensing precision is improved, and the service life of the firing pin of the nozzle is prolonged.
3. According to the piezoelectric ceramic injection valve, the piezoelectric ceramic stack cylinder is positioned between the pressure rod and the oscillating rod and is close to one side of the left end, the groove on the lower end face of the piezoelectric ceramic stack cylinder is used for embedding and rotatably connecting the positioning convex strip of the oscillating rod, and the firing pin is driven to repeatedly impact the nozzle through power on and power off of the piezoelectric ceramic stack cylinder to push out a colloid in the colloid storage cavity, so that quick and high-precision dispensing is realized; furthermore, the upper end face of the piezoelectric ceramic stack column body is connected with the pressing rod through a second ball positioned in a first arc-shaped groove of the pressing rod and a second arc-shaped groove of the piezoelectric ceramic stack column body, so that the motion trail of the piezoelectric ceramic is stable, the dispensing precision is improved, and the service life is prolonged.
Drawings
FIG. 1 is a schematic structural view of a piezoelectric ceramic injection valve according to the present invention;
FIG. 2 is a cross-sectional view of the piezoelectric ceramic injection valve of the present invention in its entirety;
FIG. 3 is a partial cross-sectional view of a first piezoelectric ceramic injector valve in accordance with the present invention;
FIG. 4 is a second partial cross-sectional view of the piezoceramic injection valve of the present invention;
FIG. 5 is a sectional view showing the structure of a nozzle in the piezoelectric ceramic injection valve according to the present invention.
In the above drawings: 1. an accommodating cavity; 2. a valve body; 3. a pressure lever; 301. a first arc-shaped groove; 4. a swing lever; 401. a convex pin column; 402. positioning the convex strip; 5. a striker; 6. a glue feeding mechanism; 601. a glue storage cavity; 602. a glue inlet pipeline; 7. a piezoelectric ceramic stack column; 701. a groove; 702. a second arc-shaped groove; 8. a rotary adjusting component; 801. rotating the pin; 802. a traveling threaded post; 803. a plug pin portion; 804. a recess pin groove; 9. a hanger; 10. a first groove; 11. a lower convex strip; 12. upward convex strips; 13. a first spring; 14. a second groove; 15. a support spring; 16. a guiding plug body; 161. a through hole; 17. a nozzle; 171. an impact surface; 18. a second spring; 19. a nozzle nut; 20. a lock nut; 22. a ball; 23. a seal ring; 24. a second round ball.
Detailed Description
In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.
Example 1: a piezoelectric ceramic injection valve comprises a valve body 2 with a containing cavity 1, a pressure lever 3, a swinging lever 4, a firing pin 5 and a glue feeding mechanism 6, wherein the glue feeding mechanism 6 is arranged on the lower end face of the valve body 2, and a piezoelectric ceramic stack column 7 is arranged in the containing cavity 1 of the valve body 2;
a rotary adjusting assembly 8 is mounted at the upper part of the valve body 2, a hanging frame 9 is arranged in the accommodating cavity 1 of the valve body 2, a first groove 10 and a lower convex strip 11 are respectively arranged on the upper surface and the lower surface of the accommodating cavity 1 of the valve body 2, an upper convex strip 12 is arranged on the upper surface of the left end of the pressure lever 3, and a first spring 13 is arranged between the lower surface of the right end of the pressure lever 3 and the hanging frame 9;
the lower end of the rotary adjusting component 8 is in contact with the upper surface of the right end of the pressure lever 3, and when the lower end of the rotary adjusting component 8 moves up and down, the upper convex strip 12 of the pressure lever 3 can rotate around the first groove 10 on the accommodating cavity 1;
the lower surface of the left end of the swing rod 4 is provided with a second groove 14 for the lower convex strip 11 to be embedded in, a supporting spring 15 is arranged between the lower surface of the middle part of the swing rod 4 and the bottom of the accommodating cavity 1, one side of the upper surface of the swing rod 4 close to the left end thereof is provided with a positioning convex strip 402, and the lower surface of the right end of the swing rod 4 is connected with the firing pin 5;
a first arc-shaped groove 301 is formed in one side, close to the left end, of the lower surface of the pressing rod 3, the piezoelectric ceramic stack column 7 is located between the pressing rod 3 and the oscillating rod 4 and close to one side of the left end, the upper end face of the piezoelectric ceramic stack column 7 is connected with the pressing rod 3 through a second ball 24 located in the first arc-shaped groove 301 of the pressing rod 3 and a second arc-shaped groove 702 of the piezoelectric ceramic stack column 7, and a groove 701 in the lower end face of the piezoelectric ceramic stack column 7 is used for a positioning convex strip 402 of the oscillating rod 4 to be embedded and rotatably connected;
the rotary adjusting assembly 8 further comprises a rotary pin 801 and a traveling threaded column 802, the rotary pin 801 is in fit connection with the traveling threaded column 802 through a pair of plug pins 803 and a concave pin groove 804, the traveling threaded column 802 is in fit connection with the installation through hole of the valve body 2 through threads, and the traveling threaded column 802 of the rotary adjusting assembly 8 is in spherical hinge connection with the pressure rod 3;
the glue feeding mechanism 6 comprises a glue storage cavity 601 positioned in the valve body 2 and a glue feeding pipeline 602 communicated with the glue storage cavity 601, the glue storage cavity 601 mainly comprises a nozzle nut 19 arranged at an opening of the valve body 2 and a nozzle 17 positioned on the lower end face of the nozzle nut 19, and the nozzle nut 19 and the nozzle 17 are positioned in a lock nut 20 connected with the valve body 2;
a guide blocking body 16 is installed in the opening at the lower end of the valve body 2, the firing pin 5 is embedded into the through hole 161 of the guide blocking body 16, the firing pin 5 extends into the glue storage cavity 601 of the glue feeding mechanism 6, the lower end of the firing pin 5 corresponds to the impact surface 171 of the nozzle 17, and a second spring 18 is arranged between the upper end surface of the firing pin 5 and the guide blocking body 16.
The supporting spring 15 is sleeved on the convex pin column 401 of the swinging rod 4; the convex pin column 401 is connected with the valve body 2 through threads; the glue feeding mechanism 6 is connected to the lower end face of the valve body 2 through at least 2 bolts.
Example 2: a piezoelectric ceramic injection valve comprises a valve body 2 with a containing cavity 1, a pressure lever 3, a swinging lever 4, a firing pin 5 and a glue feeding mechanism 6, wherein the glue feeding mechanism 6 is arranged on the lower end face of the valve body 2, and a piezoelectric ceramic stack column 7 is arranged in the containing cavity 1 of the valve body 2;
a rotary adjusting assembly 8 is mounted at the upper part of the valve body 2, a hanging frame 9 is arranged in the accommodating cavity 1 of the valve body 2, a first groove 10 and a lower convex strip 11 are respectively arranged on the upper surface and the lower surface of the accommodating cavity 1 of the valve body 2, an upper convex strip 12 is arranged on the upper surface of the left end of the pressure lever 3, and a first spring 13 is arranged between the lower surface of the right end of the pressure lever 3 and the hanging frame 9;
the lower end of the rotary adjusting component 8 is in contact with the upper surface of the right end of the pressure lever 3, and when the lower end of the rotary adjusting component 8 moves up and down, the upper convex strip 12 of the pressure lever 3 can rotate around the first groove 10 on the accommodating cavity 1;
the lower surface of the left end of the swing rod 4 is provided with a second groove 14 for the lower convex strip 11 to be embedded in, a supporting spring 15 is arranged between the lower surface of the middle part of the swing rod 4 and the bottom of the accommodating cavity 1, one side of the upper surface of the swing rod 4 close to the left end thereof is provided with a positioning convex strip 402, and the lower surface of the right end of the swing rod 4 is connected with the firing pin 5;
a first arc-shaped groove 301 is formed in one side, close to the left end, of the lower surface of the pressing rod 3, the piezoelectric ceramic stack column 7 is located between the pressing rod 3 and the oscillating rod 4 and close to one side of the left end, the upper end face of the piezoelectric ceramic stack column 7 is connected with the pressing rod 3 through a second ball 24 located in the first arc-shaped groove 301 of the pressing rod 3 and a second arc-shaped groove 702 of the piezoelectric ceramic stack column 7, and a groove 701 in the lower end face of the piezoelectric ceramic stack column 7 is used for a positioning convex strip 402 of the oscillating rod 4 to be embedded and rotatably connected;
the rotary adjusting assembly 8 further comprises a rotary pin 801 and a traveling threaded column 802, the rotary pin 801 is in fit connection with the traveling threaded column 802 through a pair of plug pins 803 and a concave pin groove 804, the traveling threaded column 802 is in fit connection with the installation through hole of the valve body 2 through threads, and the traveling threaded column 802 of the rotary adjusting assembly 8 is in spherical hinge connection with the pressure rod 3;
the glue feeding mechanism 6 comprises a glue storage cavity 601 positioned in the valve body 2 and a glue feeding pipeline 602 communicated with the glue storage cavity 601, the glue storage cavity 601 mainly comprises a nozzle nut 19 arranged at an opening of the valve body 2 and a nozzle 17 positioned on the lower end face of the nozzle nut 19, and the nozzle nut 19 and the nozzle 17 are positioned in a lock nut 20 connected with the valve body 2;
a guide blocking body 16 is installed in the opening at the lower end of the valve body 2, the striker 5 is embedded in the through hole 161 of the guide blocking body 16, the striker 5 extends into the glue storage chamber 601 of the glue feeding mechanism 6, the lower end of the striker 5 corresponds to the impact surface 171 of the nozzle 17, and a second spring 18 is arranged between the upper end surface of the striker 5 and the guide blocking body 16.
The lower end of the striker 5 is inserted into the through hole of the nozzle nut 19; the lower end surface of the striker 5 is an arc surface, and the corresponding impact surface 171 of the nozzle 17 is an arc concave surface; the coefficient of stiffness of the supporting spring 15 is greater than that of the second spring 18; a sealing ring 23 is provided between the outer side wall of the nozzle nut 19 and the valve body 2.
Through the linkage arrangement of the structures among the rotary adjusting assembly, the pressure rod and the swinging rod, the precise adjustment of the position of the striker can be realized without depending on the experience of people, so that the gap between the striker and the nozzle is always kept consistent, and the precision and consistency of dispensing are improved;
furthermore, the thickness of the sprayed glue can be accurately adjusted to meet the use requirements of different glues;
in addition, through the connection arrangement of the nozzle nut, the lock nut and the valve body, under the condition that the gap between the firing pin and the nozzle is adjustable, the stable installation of the nozzle is further realized, and the nozzle is prevented from shaking and deviating in the high-frequency impact process, so that the dispensing precision is improved, and the service life of the nozzle firing pin is prolonged;
in addition, the firing pin is driven to repeatedly impact the nozzle by power on and power off of the piezoelectric ceramic stack cylinder, so that the colloid in the colloid storage cavity is pushed out, and quick and high-precision dispensing is realized; the pulsating voltage of the piezoelectric ceramic stack cylinder can accurately adjust the speed of the firing pin, so that the stroke of the firing pin is accurate and controllable, the dispensing precision is further improved, and the service life is prolonged.
The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this means. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. A piezoceramic injection valve, characterized by: the valve comprises a valve body (2) with an accommodating cavity (1), a pressure lever (3), a swinging lever (4), a firing pin (5) and a glue feeding mechanism (6), wherein the glue feeding mechanism (6) is arranged on the lower end face of the valve body (2), and a piezoelectric ceramic stack column (7) is arranged in the accommodating cavity (1) of the valve body (2);
a rotary adjusting assembly (8) is mounted at the upper part of the valve body (2), a hanging rack (9) is arranged in the accommodating cavity (1) of the valve body (2), a first groove (10) and a lower convex strip (11) are respectively arranged on the upper surface and the lower surface of the accommodating cavity (1) of the valve body (2), an upper convex strip (12) is arranged on the upper surface of the left end of the pressure lever (3), and a first spring (13) is arranged between the lower surface of the right end of the pressure lever (3) and the hanging rack (9);
the lower end of the rotary adjusting component (8) is in contact with the upper surface of the right end of the pressing rod (3), and when the lower end of the rotary adjusting component (8) moves up and down, an upper convex strip (12) of the pressing rod (3) can rotate around a first groove (10) in the accommodating cavity (1);
the lower surface of the left end of the swing rod (4) is provided with a second groove (14) for the lower convex strip (11) to be embedded in, a supporting spring (15) is arranged between the lower surface of the middle part of the swing rod (4) and the bottom of the accommodating cavity (1), one side, close to the left end, of the upper surface of the swing rod (4) is provided with a positioning convex strip (402), and the lower surface of the right end of the swing rod (4) is connected with the firing pin (5);
one side, close to the left end, of the lower surface of the pressure lever (3) is provided with a first arc-shaped groove (301), the piezoelectric ceramic stack cylinder (7) is positioned between the pressure lever (3) and the oscillating lever (4) and is close to one side of the left end, the upper end surface of the piezoelectric ceramic stack cylinder (7) is connected with the pressure lever (3) through a first arc-shaped groove (301) positioned in the pressure lever (3) and a second ball (24) of a second arc-shaped groove (702) of the piezoelectric ceramic stack cylinder (7), and a groove (701) on the lower end surface of the piezoelectric ceramic stack cylinder (7) is used for a positioning convex strip (402) of the oscillating lever (4) to be embedded and rotatably connected;
the rotary adjusting assembly (8) further comprises a rotary pin (801) and a travelling threaded column (802), the rotary pin (801) is matched and connected with the travelling threaded column (802) through a pair of pin parts (803) and a groove pin groove (804), the travelling threaded column (802) is matched and connected with a mounting through hole of the valve body (2) through threads, and the travelling threaded column (802) of the rotary adjusting assembly (8) is hinged and connected with the pressure rod (3) through a ball;
the glue inlet mechanism (6) comprises a glue storage cavity (601) positioned in the valve body (2) and a glue inlet pipeline (602) communicated with the glue storage cavity (601), the glue storage cavity (601) mainly comprises a nozzle nut (19) arranged at an opening of the valve body (2) and a nozzle (17) positioned on the lower end face of the nozzle nut (19), and the nozzle nut (19) and the nozzle (17) are positioned in a locking nut (20) connected with the valve body (2);
a guide blocking body (16) is arranged in an opening at the lower end of the valve body (2), the firing pin (5) is embedded into a through hole (161) of the guide blocking body (16), the firing pin (5) extends into the glue storage cavity (601) of the glue feeding mechanism (6), the lower end of the firing pin (5) corresponds to an impact surface (171) of the nozzle (17), and a second spring (18) is arranged between the upper end surface of the firing pin (5) and the guide blocking body (16).
2. The piezoceramic injection valve according to claim 1, characterized in that: the supporting spring (15) is sleeved on the convex pin column (401) of the swinging rod (4).
3. The piezoceramic injection valve according to claim 2, characterized in that: the convex pin column (401) is connected with the valve body (2) through threads.
4. The piezoceramic injection valve according to claim 1, characterized in that: the lower end of the firing pin (5) is embedded into a through hole of the nozzle nut (19).
5. The piezoceramic injection valve according to claim 1, characterized in that: the lower end surface of the firing pin (5) is an arc surface, and the impact surface (171) of the corresponding nozzle (17) is an arc concave surface.
6. The piezoceramic injection valve according to claim 1, characterized in that: the glue feeding mechanism (6) is connected to the lower end face of the valve body (2) through at least 2 bolts.
7. The piezoceramic injection valve according to claim 1, characterized in that: the coefficient of stiffness of the supporting spring (15) is larger than that of the second spring (18).
8. The piezoceramic injection valve according to claim 1, characterized in that: and a sealing ring (23) is arranged between the outer side wall of the nozzle nut (19) and the valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011307238.0A CN114515676A (en) | 2020-11-20 | 2020-11-20 | Piezoelectric ceramic injection valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011307238.0A CN114515676A (en) | 2020-11-20 | 2020-11-20 | Piezoelectric ceramic injection valve |
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| CN114515676A true CN114515676A (en) | 2022-05-20 |
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| CN202011307238.0A Pending CN114515676A (en) | 2020-11-20 | 2020-11-20 | Piezoelectric ceramic injection valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114985222A (en) * | 2022-06-06 | 2022-09-02 | 深圳市桃子自动化科技有限公司 | Piezoelectric injection valve convenient to stroke adjustment |
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Address after: No. 189, Wutaishan Road, High tech Zone, Suzhou City, Jiangsu Province, 215011 Applicant after: Suzhou Zhuozhao dispensing Co.,Ltd. Address before: 215011 No.3, phase I, standard plant, No.588 Wutaishan Road, high tech Zone, Suzhou City, Jiangsu Province Applicant before: Suzhou Zhuozhao dispensing Co.,Ltd. |
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Application publication date: 20220520 |