CN218804760U - Be used for laser printing silver thick liquid spraying device - Google Patents
Be used for laser printing silver thick liquid spraying device Download PDFInfo
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- CN218804760U CN218804760U CN202223262232.3U CN202223262232U CN218804760U CN 218804760 U CN218804760 U CN 218804760U CN 202223262232 U CN202223262232 U CN 202223262232U CN 218804760 U CN218804760 U CN 218804760U
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- silver paste
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model discloses a laser printing silver paste spraying device, which comprises a silver paste nozzle (3); a row of longitudinal spraying channels are arranged in the silver paste nozzle (3); each longitudinal spraying channel penetrates through the upper bottom surface and the lower bottom surface of the silver paste spray head (3), each longitudinal spraying channel is divided into an upper spraying channel (31) and a lower spraying channel (32), the upper spraying channel (31) is communicated with the silver paste channel (33), and the silver paste channel (33) penetrates through the side surface of the silver paste spray head (3); the orifice of silver thick liquid way (33) installs into thick liquids connector (2) as feeding interface (36), the orifice of going up spout way (31) installs high-frequency pressure injector head (4) as injection head interface (34), the orifice of spout way (32) is as silver thick liquid orifice (35) down. The utility model relates to a rationally, be applied to solar wafer's laser and print in, have fine practical application and worth.
Description
Technical Field
The utility model belongs to the photovoltaic field relates to the laser printing technique, specifically is a be used for laser to print silver thick liquid spraying device, before solar wafer uses laser to print for spraying silver thick liquid on the support plate of printing.
Background
In the production process of a cell slice in the existing photovoltaic field, a screen printing process is used for manufacturing a surface conductive grid line, but various product defects are easy to occur in the screen printing process, the most easy product defects are dotted lines, one is the defect of the dotted lines that the appearance width size of a silver circuit is narrowed or disconnected, and the other is the defect of the dotted lines that the appearance width size of the silver circuit is unchanged and the thickness of the silver circuit is thinned; in the printing process, the silk screen is contacted with a substrate (silicon wafer), so that the silicon wafer is easily damaged and secondarily polluted; at present, the printing precision and the height-width ratio of the printing grid line are difficult to improve.
The screen printing process also undergoes the conversion from one-time printing to multiple-time printing, and although the height-width ratio of the grid line is improved, the improvement of the efficiency makes little contribution compared with the quality problems of difficult control of printing precision, grid electrode extension and the like brought by the improvement of the efficiency.
At present, the conductive grid lines can be printed on the surface of the battery piece by adopting a laser printing technology. The laser printing technology is that paste is firstly sprayed on a support plate, then the paste on the support plate is printed on a battery plate through laser, a conductive grid line is formed, the width-height ratio and uniformity of the grid line are better, the existing spraying paste on the support plate is integrally sprayed on the support plate, then the paste is scraped back and forth through a scraper plate, the spraying of the paste on the support plate is realized, the paste waste is more, the uniformity can be unevenly scraped, the grid line on the battery plate is one, the paste is not required to be printed on the whole battery plate, the waste is caused if the paste exists between the grid line and the grid line, and the conversion efficiency of the final battery plate can be influenced.
Disclosure of Invention
To the problem, the utility model aims at providing a novel laser printing silver thick liquid spraying device realizes the directional and quantitative spraying of thick liquids on the support plate, and the spraying pattern can freely be set for moreover.
The utility model discloses an adopt following technical scheme to realize:
a spraying device for laser printing silver paste comprises a silver paste spray head; a row of longitudinal spraying channels are arranged in the silver paste spraying nozzle; each longitudinal spraying channel penetrates through the upper bottom surface and the lower bottom surface of the silver paste spray head, each longitudinal spraying channel is divided into an upper spraying channel and a lower spraying channel, the upper spraying channel is communicated with the silver paste channel, and the silver paste channel penetrates through the side surface of the silver paste spray head; the orifice of silver thick liquid way installs into the thick liquids connector as the feeding interface, the orifice of going up the spout way installs the high frequency pressure injector head as the injector head interface, the orifice of spout way is as silver thick liquid orifice down.
During the use, the design of one-to-one spraying thick liquids is carried out to point grid line interval to silver thick liquid shower nozzle adopts and how much adjusts the orifice quantity of silver thick liquid shower nozzle according to grid line quantity, and silver thick liquid shower nozzle is including the integration have high frequency pressure injector head and advance silver thick liquid connector, can erupt the silver thick liquid point of the droplet form of micron order with high frequency on the product surface, and through under control system's effect, through the relative movement of control product and shower nozzle, generate the figure of various patterns.
Further preferably, the device also comprises a scraper; silver thick liquid shower nozzle and scraper parallel arrangement back both sides are connected through horizontal connecting plate respectively, connect vertical mounting panel on the horizontal connecting plate. And after the dot-shaped silver paste is sprayed, scraping the printed dot-shaped silver paste pattern by a scraper to form a micron-sized silver paste coating.
Further preferably, the aperture D of the upper spraying channel is 4-6mm, and the aperture D of the lower spraying channel is 0.03-0.5mm.
Further preferred, install a plurality of silver thick liquid shower nozzles between the horizontal connecting plate of both sides, realize the stack printing many times to realize the pattern of printing of bigger thickness.
Compared with the prior art, the utility model, have higher flexibility, the change is printed the pattern and need not to make the half tone again, and ageing is higher, and the overall dimension precision of printing the pattern reaches the micron order, is far above current half tone printing, saves silver thick liquid simultaneously, and the silver thick liquid utilization ratio can reach 90% -99%.
The utility model relates to a rationally, this spraying device has fine practical application and worth in being applied to solar wafer's laser printing.
Drawings
Fig. 1 shows the whole schematic diagram of the laser printing silver paste spraying device of the utility model.
Fig. 2 shows an overall schematic view of a silver paste nozzle.
Fig. 3 shows a schematic cross-sectional view of a silver paste showerhead.
In the figure: 1-a support plate, 2-a slurry feeding connector, 3-a silver paste spray head, 4-a high-frequency pressure spray head, 5-a longitudinal mounting plate, 6-a horizontal connecting plate and 7-a scraper; 31-upper spray channel, 32-lower spray channel, 33-silver paste channel, 34-spray head interface, 35-silver paste spray hole and 36-feeding interface.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
A silver paste spraying device for laser printing is shown in figure 1 and comprises a silver paste spray head 3, a scraper 7, a horizontal connecting plate 6 and a longitudinal connecting plate 5. Both sides are connected through horizontal connection board 6 respectively behind silver thick liquid shower nozzle 3 and the parallel arrangement of scraper 7, and the length of silver thick liquid shower nozzle 3 and scraper 7 equals, connects vertical mounting panel 5 on the horizontal connection board 6. The silver paste spray head 3 is a strip-shaped silver paste spray head, the strip-shaped silver paste spray head and the scraper are both arranged between the two horizontal connecting plates, and one end of each horizontal connecting plate 6 is provided with a fixed opening and is fixedly connected to the side surface of the silver paste spray head 3 through a screw; the 6 other ends of horizontal connection board are equipped with the bar trompil, through screw fixed connection in scraper 7 side to adjust the interval between scraper and the silver thick liquid shower nozzle through this bar trompil. Similarly, 5 one ends of longitudinal installation board are equipped with fixed trompil, and through screw fixed connection 6 on the horizontally connect board, the 5 other ends of longitudinal installation board are equipped with the bar trompil, through mounting screw on spraying equipment to adjust whole spraying device's mounted position through this bar trompil.
As shown in fig. 2 and 3, the silver paste spraying nozzle 3 is in a strip shape, and a row of longitudinal spraying channels are arranged in the silver paste spraying nozzle and are positioned in the same section. Each longitudinal spraying channel penetrates through the upper bottom surface and the lower bottom surface of the silver paste spraying head 3, each longitudinal spraying channel is divided into an upper spraying channel 31 and a lower spraying channel 32, and in specific implementation, the aperture D of the upper spraying channel 31 is 4-6mm (preferably 5 mm), and the aperture D of the lower spraying channel 32 is 0.03-0.5mm (preferably 0.05-0.15 mm).
As shown in fig. 2 and 3, the upper channel 31 is connected to the silver paste channel 33, and the silver paste channel 33 penetrates to the side of the silver paste nozzle 3. The orifice of the silver paste channel 33 is provided with a paste inlet connector 2 as a feeding interface 36, that is, the paste inlet connector is arranged on the side surface of the nozzle, and all the feeding interfaces 36 on the side surface of the silver paste nozzle 3 are positioned on the same straight line.
As shown in fig. 2 and 3, the high-frequency pressure jet head 4 is mounted as a jet head interface 34 at the orifice of the upper jet channel 31, i.e. the high-frequency pressure jet head is arranged above the strip-shaped silver paste jet head, and all jet head interfaces 34 at the upper bottom surface of the silver paste jet head 3 are located on the same straight line.
As shown in fig. 2 and 3, the orifice of the lower nozzle 32 is used as a silver paste nozzle 35; all the silver paste spraying holes 35 on the lower bottom surface of the silver paste spraying head 3 are positioned on the same straight line. The distance between adjacent silver paste spraying holes 35 is equal to the distance between adjacent grid lines on the carrier plate 1, that is, each silver paste spraying hole 35 corresponds to one grid line on the carrier plate 1.
This embodiment laser printing silver thick liquid spraying device, bar silver thick liquid shower nozzle can be integrated with the high frequency pressure injector head and advance the silver thick liquid connector, during practical application, the high frequency pressure injector head as prior art product, directly purchase obtain can, the pressure of high frequency pressure injector head is at 0.1-0.5MPa, the frequency is at 200-2000 times/second. External conductive silver paste is continuously conveyed to the interior of an upper spray channel in a silver paste spray head through a paste inlet connector, high-pressure air enters the upper spray channel from the upper part through a high-frequency pressure spray head in a pulse mode, carries the conductive silver paste to enter a lower spray channel and then is sprayed out from a spray hole, micron-sized droplet-shaped silver paste points are sprayed out on the surface of a support plate by adopting extremely high frequency, and various patterns are generated by controlling the relative movement of the support plate and a die head under the action of a control system; after the point silver paste is sprayed, scraping the printed point silver paste pattern by a scraper to form a micron-sized silver paste coating; the bar silver thick liquid shower nozzle and the scraper pass through the shower nozzle and are connected with the horizontal connection board to can conveniently adjust the interval of scraper and shower nozzle, make the silver thick liquid scrape more level, more even. Every orifice of bar silver thick liquid shower nozzle's bottom surface equipartition all corresponds the battery piece and gets a grid line, the orifice size is unanimous basically with grid line width, so can not cause unnecessary waste to the silver thick liquid in the middle of the spraying, every orifice all has solitary silver thick liquid connector and the control of high frequency pressure injector head of advancing, so can be to the change of grid line quantity on the battery piece, silver thick liquid connector and high frequency pressure injector head to on the orifice carry out control switch and just can obtain bigger compatibility, and the size and the quantity of bar silver thick liquid shower nozzle can increase according to the size of printing the pattern, in order to deal with the printing demand of large breadth product. In addition, a plurality of silver paste spray heads (located in front of the scraper) can be further installed between the horizontal connecting plates on the two sides, and multiple times of overlapping printing is achieved through the number and arrangement mode of the overlapping printing heads so as to achieve printing patterns with larger thickness.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited, and although the detailed description is made with reference to the embodiments of the present invention, it should be understood by those skilled in the art that the technical solutions of the present invention are modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a be used for laser printing silver thick liquid spraying device which characterized in that: comprises a silver paste nozzle (3); a row of longitudinal spraying channels are arranged in the silver paste nozzle (3); each longitudinal spraying channel penetrates through the upper bottom surface and the lower bottom surface of the silver paste spray head (3), each longitudinal spraying channel is divided into an upper spraying channel (31) and a lower spraying channel (32), the upper spraying channel (31) is communicated with the silver paste channel (33), and the silver paste channel (33) penetrates through the side surface of the silver paste spray head (3); the orifice of silver thick liquid way (33) installs into thick liquids connector (2) as feeding interface (36), the orifice of going up spout way (31) installs high-frequency pressure injector head (4) as injection head interface (34), the orifice of spout way (32) is as silver thick liquid orifice (35) down.
2. The device for spraying the silver paste for laser printing according to claim 1, characterized in that: also comprises a scraper (7); silver thick liquid shower nozzle (3) and scraper (7) parallel arrangement back both sides are connected through horizontal connecting plate (6) respectively, connect vertical mounting panel (5) on horizontal connecting plate (6).
3. The device for spraying silver paste for laser printing according to claim 1 or 2, characterized in that: all silver paste spray holes (35) on the lower bottom surface of the silver paste spray head (3) are located on the same straight line.
4. The device of claim 3, wherein the device is used for spraying the silver paste for laser printing, and is characterized in that: the distance between every two adjacent silver paste spraying holes (35) is equal to the distance between every two adjacent grid lines on the carrier plate (1), namely, each silver paste spraying hole (35) corresponds to one grid line on the carrier plate (1).
5. The device of claim 1, for spraying silver paste for laser printing, comprising: all injector head interfaces (34) of the upper bottom surface of the silver paste injector (3) are positioned on the same straight line.
6. The device of claim 1, for spraying silver paste for laser printing, comprising: all feeding interfaces (36) on the side face of the silver paste sprayer (3) are positioned on the same straight line.
7. The device for spraying the silver paste for laser printing according to claim 1, characterized in that: the aperture of the upper spraying channel (31) is 4-6mm, and the aperture of the lower spraying channel (32) is 0.03-0.5mm.
8. The device for spraying the silver paste for laser printing according to claim 2, is characterized in that: one end of the horizontal connecting plate (6) is provided with a fixed type opening, and the other end is provided with a strip-shaped opening; one end of the longitudinal mounting plate (5) is provided with a fixed type opening, and the other end of the longitudinal mounting plate is provided with a strip-shaped opening.
9. The device for spraying the silver paste for laser printing according to claim 8, characterized in that: the lengths of the silver paste spray head (3) and the scraper (7) are equal.
10. The device for spraying the silver paste for laser printing according to claim 2, is characterized in that: a plurality of silver paste spray heads (3) are arranged between the horizontal connecting plates (6) at two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223262232.3U CN218804760U (en) | 2022-12-06 | 2022-12-06 | Be used for laser printing silver thick liquid spraying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223262232.3U CN218804760U (en) | 2022-12-06 | 2022-12-06 | Be used for laser printing silver thick liquid spraying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218804760U true CN218804760U (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223262232.3U Active CN218804760U (en) | 2022-12-06 | 2022-12-06 | Be used for laser printing silver thick liquid spraying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218804760U (en) |
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2022
- 2022-12-06 CN CN202223262232.3U patent/CN218804760U/en active Active
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