CN111974625A - Pressure difference bubble stirring piezoelectric jetting device and jetting method - Google Patents
Pressure difference bubble stirring piezoelectric jetting device and jetting method Download PDFInfo
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- CN111974625A CN111974625A CN202010895455.XA CN202010895455A CN111974625A CN 111974625 A CN111974625 A CN 111974625A CN 202010895455 A CN202010895455 A CN 202010895455A CN 111974625 A CN111974625 A CN 111974625A
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- regulating valve
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- pressure regulating
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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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
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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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Abstract
The invention discloses a pressure difference bubble stirring piezoelectric injection device and an injection method, wherein the device comprises a piezoelectric driving mechanism, an impact mechanism, an injection mechanism, a first air pressure regulating valve, a second air pressure regulating valve, a flow channel, a material barrel and a pipeline, the injection mechanism is communicated with the pipeline, a feed inlet of the material barrel is communicated with the first air pressure regulating valve, a discharge outlet of the material barrel is communicated with the flow channel, one end of the flow channel is a closed end, the other end of the flow channel is communicated with the pipeline, the flow channel is provided with an air inlet hole at a position opposite to the discharge outlet of the material barrel, the air inlet hole is provided with a bubble grid and is communicated with the second air pressure regulating valve, and the regulating pressure of the first air pressure regulating valve is greater than. The invention generates air bubbles at the bottom of the charging barrel by generating air pressure difference, and stirs the glue solution in the charging barrel through the air bubbles, thereby preventing solid particles in the glue solution from precipitating to cause poor product manufacture, and enabling the spraying mechanism to effectively spray the precipitable glue solution.
Description
Technical Field
The invention relates to an injection device, in particular to a pressure difference bubble stirring piezoelectric injection device and an injection method, and belongs to the technical field of dispensing.
Background
The adhesive dispensing is widely applied to the field of electronic manufacturing, the non-contact spraying adhesive dispensing has the characteristics of high speed, high precision, non-contact and the like, and the non-contact spraying adhesive dispensing gradually replaces the traditional adhesive dispensing, and the non-contact spraying is mainly driven by piezoelectric and pressure gas. At present, non-contact spraying can realize uv, epoxy resin, hot melt adhesive PUR and the like. Fluids such as printing ink, led fluorescent powder and the like which can generate precipitates in the rest time are also widely applied to dispensing in electronic packaging, the spraying effect is poor along with the increase of time, and solid particles can precipitate in a glue barrel when the glue solution in a material barrel is in the rest time in the spraying process, so that the spraying blockage is caused, or the quality is uneven and the like, and the performance of a product is influenced.
Disclosure of Invention
The invention aims to provide a pressure difference bubble stirring piezoelectric injection device, which generates bubbles at the bottom of a material cylinder by generating gas pressure difference, and stirs glue solution in the material cylinder through the bubbles, thereby preventing solid particles in the glue solution from precipitating to cause poor product manufacture and enabling an injection mechanism to effectively inject precipitable glue solution.
The invention also aims to provide a pressure difference bubble stirring piezoelectric jet method based on the device.
The purpose of the invention can be achieved by adopting the following technical scheme:
the utility model provides a pressure differential bubble stirring piezoelectricity injection apparatus, includes piezoelectric drive mechanism, striking mechanism, injection mechanism, first pneumatic control valve, second pneumatic control valve, runner, feed cylinder and pipeline, injection mechanism and pipeline intercommunication, piezoelectric drive mechanism is connected with striking mechanism, striking mechanism's striking direction is injection mechanism place direction, can follow the pipeline up-and-down motion, the feed inlet and the first pneumatic control valve intercommunication of feed cylinder, the discharge gate and the runner intercommunication of feed cylinder, the one end of runner is the blind end, and the other end and the pipeline intercommunication of runner are equipped with the inlet port on the position relative with the discharge gate of feed cylinder on the runner, inlet port department is equipped with the bubble grid to communicate with second pneumatic control valve, the regulating pressure of first pneumatic control valve is greater than the regulating pressure of second pneumatic control valve.
Furthermore, the device also comprises a first switch valve and a second switch valve, wherein the first switch valve is arranged between the feeding hole of the charging barrel and the first air pressure regulating valve, and the second switch valve is arranged between the air inlet hole and the second air pressure regulating valve.
Furthermore, the device also comprises a shell and a fluid seat, wherein the shell is fixedly connected with the fluid seat, the piezoelectric driving mechanism is arranged in the shell, the impact mechanism extends downwards from the inside of the shell until penetrating through the fluid seat, the charging barrel is fixed at the top of the fluid seat, the injection mechanism is fixed at the bottom of the fluid seat, and the flow channel is arranged in the fluid seat.
Further, the spraying mechanism comprises a spraying opening, a nozzle, a threaded sleeve and a fixed seat, the fixed seat is fixed at the spraying opening, an opening is formed in the bottom of the fixed seat, the nozzle is arranged at the opening and communicated with the pipeline, and the nozzle is fixedly connected with the fixed seat through the threaded sleeve.
Furthermore, the piezoelectric driving mechanism comprises a piezoelectric driver and a lever, the piezoelectric driver is vertically arranged on the lever, and one end of the lever is fixedly connected with the impact mechanism.
Furthermore, the piezoelectric driving mechanism further comprises an elastic piece, the elastic piece is sleeved outside the impact mechanism, the upper end of the elastic piece is fixedly connected with the lever, and the lower end of the elastic piece is fixedly arranged.
Further, the piezoelectric actuator is piezoelectric ceramic.
Further, the striking mechanism is a striker.
Further, the closed end of the flow passage is closed by a plug.
The other purpose of the invention can be achieved by adopting the following technical scheme:
a pressure difference bubble stirring piezoelectric injection method is realized based on the device, and the method comprises the following steps: after the pressure gas is regulated to the specified pressure through the first air pressure regulating valve, the pressure gas acts on the glue solution of the charging barrel to provide the glue solution for the injection mechanism; when the set stirring time is reached, the pressure gas is regulated to the regulating pressure larger than the first pressure regulating valve through the second air pressure regulating valve, so that the pressure gas enters the material barrel through the bubble grating and generates bubbles, the bubbles upwards flow through the material barrel to stir the glue solution in the material barrel, and finally the glue solution is discharged to the outside of the material barrel through the first air pressure regulating valve, thereby realizing the stirring of the glue solution.
Compared with the prior art, the invention has the following beneficial effects:
the invention is provided with a first air pressure regulating valve and a second air pressure regulating valve, wherein the first air pressure regulating valve is communicated with a feeding hole of a charging barrel, the second air pressure regulating valve is communicated with an air inlet hole of a flow channel, a bubble grid is arranged at the air inlet hole, and the regulating pressure of the second air pressure regulating valve is larger than the regulating pressure of the first air pressure regulating valve so as to generate air pressure difference, so that pressure air enters the charging barrel through the bubble grid and generates bubbles, glue solution in the charging barrel is stirred through the bubbles, thereby preventing solid particles in the glue solution from precipitating so as to cause poor product manufacture, and enabling an injection mechanism to effectively inject precipitable glue solution.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a structural view of a pressure-difference bubble-agitation piezoelectric injector according to an embodiment of the present invention.
Fig. 2 is an enlarged view of a point a in fig. 1.
Fig. 3 is a flow chart of the pressure-difference bubble-stirring piezoelectric injection device according to the embodiment of the present invention.
The device comprises a shell, a fluid seat, a 3-impact mechanism, a 4-injection mechanism, a 401-injection port, a 402-nozzle, a 403-screw sleeve, a 404-fixed seat, a 5-first air pressure regulating valve, a 6-second air pressure regulating valve, a 7-flow passage, an 8-material barrel, a 9-pipeline, a 10-screw, an 11-blocking piece, a 12-air inlet hole, a 13-bubble grid, a 14-first switch valve, a 15-second switch valve, a 16-joint, a 17-piezoelectric actuator, an 18-lever, a 19-elastic piece, a 20-positioning screw and a 21-sealing ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Example (b):
as shown in fig. 1 to 2, the present embodiment provides a pressure-difference bubble-stirring piezoelectric injection device, which can eliminate bubbles generated by injection, and as shown in fig. 1 to 3, the device includes a housing 1, a fluid holder 2, a piezoelectric driving mechanism, an impact mechanism 3, an injection mechanism 4, a first air pressure regulating valve 5, a second air pressure regulating valve 6, a flow channel 7, a cartridge 8, and a pipeline 9, wherein the housing 1 is fixedly connected to the fluid holder 2, and specifically, the housing 1 is connected to the fluid holder 2 by a screw 10.
The charging barrel 8 is fixed on the top of the fluid seat 2, the charging barrel 8 is provided with a feeding hole and a discharging hole, wherein the feeding hole is arranged on the top of the charging barrel 8, fluorescent powder or ink and other glue solution containing solid particles can be filled in the charging barrel and can be communicated with the first air pressure regulating valve 5, the discharging hole is arranged at the bottom of the charging barrel 8 and can be communicated with the flow channel 7, one end of the flow channel 7 is a closed end, the closed end is closed through a blocking piece 11, specifically, the blocking piece 11 is a plug screw, the other end of the flow channel 7 is communicated with the pipeline 9, the flow channel 7 is provided with an air inlet hole 12 at the position opposite to the discharging hole of the charging barrel 8, the air inlet hole 12 extends out of the fluid seat 2, a bubble grid 13 is arranged at the air inlet hole 12 and is communicated with the second air; the stirring time can be preset, and when the injection device works normally, after the pressure gas is regulated to the specified pressure through the first air pressure regulating valve 5, the pressure gas acts on the glue solution in the charging barrel 8 to provide the glue solution for the injection mechanism 4; when the set stirring time is reached, the pressure gas is adjusted to the adjusting pressure larger than the first pressure adjusting valve 5 through the second air pressure adjusting valve 6, the pressure gas enters the material barrel 8 through the bubble grating 13 and generates bubbles, the bubbles upwards flow through the material barrel 8 to stir the glue solution in the material barrel 8, and finally the glue solution is discharged to the outside of the material barrel 8 through the first air pressure adjusting valve 5, so that the glue solution is stirred.
In order to control the flow of the pressure gas, the device of the embodiment further comprises a first switch valve 14 and a second switch valve 15, the first switch valve 14 is arranged between the feeding hole of the charging barrel 8 and the first air pressure regulating valve 5, the second switch valve 15 is arranged between the air inlet hole 12 and the second air pressure regulating valve 6, specifically, the input end of the first switch valve 14 is communicated with the output end of the first air pressure regulating valve 5, the output end of the first switch valve 14 is communicated with the feeding hole of the charging barrel 8, the input end of the second switch valve 15 is communicated with the output end of the second air pressure regulating valve 6, and the output end of the second switch valve 15 is communicated with the air inlet hole 12 through a joint 16.
The injection mechanism 4 is fixed at the bottom of the fluid seat 2 and comprises an injection port 401, a nozzle 402, a threaded sleeve 403 and a fixed seat 404, the fixed seat 404 is fixed at the injection port 401, an opening is formed in the bottom of the fixed seat 404, the nozzle 402 is arranged at the opening, the nozzle 402 is communicated with the pipeline 9 and is fixedly connected with the fixed seat 404 through the threaded sleeve 403.
The piezoelectric driving mechanism is arranged in the shell 1 and comprises a piezoelectric driver 17 and a lever 18, the piezoelectric driver 17 is vertically arranged on the lever 18, one end of the lever 18 is fixedly connected with the impact mechanism 3, the piezoelectric driver 17 is made of piezoelectric ceramics, can extend when receiving a high-level signal, can shorten when receiving a low-level signal, but has small extension displacement, so that the piezoelectric driving mechanism is amplified through the lever 18.
In order to enable the impact mechanism 3 to be driven by the piezoelectric driving mechanism to reset smoothly, the piezoelectric driving mechanism of this embodiment may further include an elastic member 19, the elastic member 19 may be a reset spring, the elastic member is sleeved outside the impact mechanism 3, the upper end of the elastic member is fixedly connected to the lever 18, and the lower end of the elastic member is fixed to the inner wall of the housing 1.
The impact mechanism 3 can be a striker which extends downwards from the inside of the shell 1 until penetrating through the fluid seat 2, the impact direction of the striker is the direction of the injection mechanism 4, the striker can move up and down along the pipeline 9 under the driving of the piezoelectric driving mechanism, and when the piezoelectric driving mechanism receives a high-level signal, the striker is in contact with the nozzle 402 to seal the glue solution in the pipeline 9; when the piezoelectric driving mechanism receives a low level signal, the firing pin is driven to move upwards; when the piezoelectric driving mechanism receives a high level signal again, the striker is pushed to collide with the nozzle 402 and the glue solution in the pipeline 9 is sprayed out by the nozzle 402.
The device of the embodiment further comprises a positioning member, the positioning member comprises a positioning screw 20 and a seal ring 21, the positioning screw 20 extends into the housing 1 from the fluid seat 2, and the seal ring 21 is fixed at the head of the positioning screw 20.
As shown in fig. 3, the pressure-difference bubble-stirring piezoelectric injection device of the present embodiment has the following principle:
s1, setting stirring time, adjusting pressure gas to a specified pressure through a first air pressure adjusting valve when the injection device works normally, then opening a first switch valve to enable the pressure gas to act on glue liquid in the charging barrel, providing the glue liquid for the nozzle through a flow channel, and closing a second switch valve to prevent the glue liquid from flowing out.
S2, when the set stirring time is reached, the pressure gas is adjusted to the adjusting pressure larger than that of the first pressure adjusting valve through the second air pressure adjusting valve, the second switch valve is opened, the pressure gas enters the material barrel through the bubble grating and generates bubbles, the bubbles flow upwards through the material barrel to stir the glue solution in the material barrel, and finally the glue solution is discharged to the outside of the material barrel through the first air pressure adjusting valve, so that the glue solution is stirred.
In summary, the invention is provided with the first air pressure regulating valve and the second air pressure regulating valve, wherein the first air pressure regulating valve is communicated with the feed inlet of the material cylinder, the second air pressure regulating valve is communicated with the air inlet of the flow channel, the air inlet is provided with the bubble grid, and the regulating pressure of the second air pressure regulating valve is larger than the regulating pressure of the first air pressure regulating valve, so as to generate the air pressure difference, so that the pressure air enters the material cylinder through the bubble grid and generates bubbles, and the glue solution in the material cylinder is stirred through the bubbles, thereby preventing the solid particles in the glue solution from precipitating to cause poor product manufacture, and enabling the injection mechanism to effectively inject the precipitable glue solution.
The above description is only for the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the scope of the present invention.
Claims (10)
1. A pressure difference bubble stirring piezoelectric injection device is characterized by comprising a piezoelectric driving mechanism, an impact mechanism, an injection mechanism, a first air pressure regulating valve, a second air pressure regulating valve, a flow channel, a charging barrel and a pipeline, the injection mechanism is communicated with the pipeline, the piezoelectric driving mechanism is connected with the impact mechanism, the impact direction of the impact mechanism is the direction of the injection mechanism and can move up and down along the pipeline, the feed inlet of the charging barrel is communicated with the first air pressure regulating valve, the discharge outlet of the charging barrel is communicated with the flow passage, one end of the flow passage is a closed end, the other end of the flow passage is communicated with the pipeline, an air inlet hole is arranged on the position of the flow passage opposite to the discharge hole of the charging barrel, a bubble grid is arranged at the air inlet hole, and is communicated with the second air pressure regulating valve, and the regulating pressure of the first air pressure regulating valve is greater than the regulating pressure of the second air pressure regulating valve.
2. A pressure differential bubble stirring piezo jet device as recited in claim 1 further comprising a first on-off valve disposed between the feed port of the cartridge and the first air pressure regulating valve and a second on-off valve disposed between the air intake port and the second air pressure regulating valve.
3. A pressure differential bubble stirring piezoelectric injector as claimed in any one of claims 1-2, further comprising a housing and a fluid seat, the housing being fixedly connected to the fluid seat, the piezoelectric drive mechanism being disposed within the housing, the impact mechanism extending downwardly from within the housing until it passes through the fluid seat, the cartridge being secured to the top of the fluid seat, the injector mechanism being secured to the bottom of the fluid seat, and the flow channel being disposed within the fluid seat.
4. A pressure difference bubble stirring piezoelectric injector according to any one of claims 1-2, wherein the injection mechanism comprises an injection port, a nozzle, a threaded sleeve and a fixed seat, the fixed seat is fixed at the injection port, an opening is arranged at the bottom of the fixed seat, the nozzle is arranged at the opening, and the nozzle is communicated with the pipeline and is fixedly connected with the fixed seat through the threaded sleeve.
5. A pressure differential bubble agitation piezoelectric injector as recited in any of claims 1-2, wherein said piezoelectric actuator comprises a piezoelectric actuator and a lever, said piezoelectric actuator being vertically disposed on said lever, one end of said lever being fixedly connected to said impact mechanism.
6. A pressure differential bubble stirring piezoelectric injector as claimed in claim 5, wherein said piezoelectric actuator further comprises an elastic member, said elastic member is sleeved outside the striking mechanism, the upper end of the elastic member is fixedly connected with the lever, and the lower end of the elastic member is fixedly arranged.
7. A pressure differential bubble stirring piezoelectric injector as defined in claim 5 wherein said piezoelectric actuator is a piezoelectric ceramic.
8. A pressure differential bubble stirring piezoelectric injector as claimed in any one of claims 1-2 wherein said impact mechanism is a striker pin.
9. A pressure differential bubble stirring piezoelectric injector as claimed in any one of claims 1-2, wherein the closed end of said flow channel is closed by a plug.
10. A pressure-difference bubble-agitation piezoelectric jet method, which is realized based on the device of any one of claims 1 to 9, and is characterized in that the method comprises the following steps: after the pressure gas is regulated to the specified pressure through the first air pressure regulating valve, the pressure gas acts on the glue solution of the charging barrel to provide the glue solution for the injection mechanism; when the set stirring time is reached, the pressure gas is regulated to the regulating pressure larger than the first pressure regulating valve through the second air pressure regulating valve, so that the pressure gas enters the material barrel through the bubble grating and generates bubbles, the bubbles upwards flow through the material barrel to stir the glue solution in the material barrel, and finally the glue solution is discharged to the outside of the material barrel through the first air pressure regulating valve, thereby realizing the stirring of the glue solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010895455.XA CN111974625A (en) | 2020-08-31 | 2020-08-31 | Pressure difference bubble stirring piezoelectric jetting device and jetting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010895455.XA CN111974625A (en) | 2020-08-31 | 2020-08-31 | Pressure difference bubble stirring piezoelectric jetting device and jetting method |
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| CN111974625A true CN111974625A (en) | 2020-11-24 |
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| CN202010895455.XA Pending CN111974625A (en) | 2020-08-31 | 2020-08-31 | Pressure difference bubble stirring piezoelectric jetting device and jetting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112495717A (en) * | 2020-12-15 | 2021-03-16 | 林青仕 | Equipment for promoting uniform discharge of adhesive sticker raw materials according to amplitude force |
| CN114804587A (en) * | 2022-04-27 | 2022-07-29 | 王凯泽 | Ultrathin ITO glass production line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203886470U (en) * | 2014-06-18 | 2014-10-22 | 武钢集团昆明钢铁股份有限公司 | Pneumatic stirring device capable of preventing particles from precipitating |
| CN108722788A (en) * | 2017-04-25 | 2018-11-02 | 深圳市腾盛工业设备有限公司 | A kind of piezoelectric ceramics spray site glue valve |
| CN109967305A (en) * | 2019-04-24 | 2019-07-05 | 厦门威圣邦网络科技有限公司 | A kind of piezo jet valve |
| CN111515082A (en) * | 2020-04-30 | 2020-08-11 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Ultrasonic vibration stirring type piezoelectric injection valve |
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2020
- 2020-08-31 CN CN202010895455.XA patent/CN111974625A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203886470U (en) * | 2014-06-18 | 2014-10-22 | 武钢集团昆明钢铁股份有限公司 | Pneumatic stirring device capable of preventing particles from precipitating |
| CN108722788A (en) * | 2017-04-25 | 2018-11-02 | 深圳市腾盛工业设备有限公司 | A kind of piezoelectric ceramics spray site glue valve |
| CN109967305A (en) * | 2019-04-24 | 2019-07-05 | 厦门威圣邦网络科技有限公司 | A kind of piezo jet valve |
| CN111515082A (en) * | 2020-04-30 | 2020-08-11 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Ultrasonic vibration stirring type piezoelectric injection valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112495717A (en) * | 2020-12-15 | 2021-03-16 | 林青仕 | Equipment for promoting uniform discharge of adhesive sticker raw materials according to amplitude force |
| CN114804587A (en) * | 2022-04-27 | 2022-07-29 | 王凯泽 | Ultrathin ITO glass production line |
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