CN219363766U - Tinning photovoltaic solder strip annular air knife based on secondary tin blowing - Google Patents
Tinning photovoltaic solder strip annular air knife based on secondary tin blowing Download PDFInfo
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- CN219363766U CN219363766U CN202320791771.1U CN202320791771U CN219363766U CN 219363766 U CN219363766 U CN 219363766U CN 202320791771 U CN202320791771 U CN 202320791771U CN 219363766 U CN219363766 U CN 219363766U
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Abstract
The utility model relates to a tin-plated photovoltaic solder strip annular air knife based on secondary tin blowing, which comprises a lower shell and an upper shell, wherein a partition plate is arranged between the lower shell and the upper shell in a sealing manner, a first tin scraping area is arranged between the partition plate and the upper shell, a second tin scraping area is arranged between the partition plate and the lower shell, the first tin scraping area is communicated with a first air collecting cavity, and the second tin scraping area is communicated with a second air collecting cavity. The lower end face of the lower shell is provided with an isolation cover with an integrated structure, an inner cavity of the isolation cover is communicated with the first tin scraping area and the second tin scraping area, and exhaust holes are circumferentially and uniformly distributed in the peripheral wall of the isolation cover. According to the utility model, the first tin scraping area is formed between the partition plate and the upper shell, and the second tin scraping area is formed between the partition plate and the lower shell, so that tin can be blown for the second time to the tin-plated welding strip, the tin carrying amount on the surface of the welding strip is effectively removed, and the smoothness of the surface of the welding strip is improved; and meanwhile, the isolation cover is arranged, so that gas carrying tin ash generated by tin coating can be discharged from the exhaust hole, and the formation of the tin ash along the lower edge of the air knife can be greatly reduced.
Description
Technical Field
The utility model relates to the technical field of air knives, in particular to a circular air knife based on secondary tin blowing, which is used for carrying out tin coating treatment on the surface of a tin-plated photovoltaic solder strip.
Background
The tinned wire is mainly used for conductive connection of crystalline silicon solar cell modules, and when welding operation is carried out, a large amount of tin-containing smoke is often generated, so that the operator is not only influenced by physical health, but also the welding effect is influenced, and therefore, the tinned layer on the surface of the copper wire connection part is scraped by the die scraping blade. But the surface uniformity and smoothness of the tin layer scraped by the scraper are poor, and the tin-plated copper wire is easy to scratch, so that the quality of the product is affected.
At present, an air knife is adopted to blow tin to remove tin plating layers at the joint of the welding strip, an air duct is arranged in the air knife, the surface of the welding strip is subjected to tin blowing treatment in an annular air outlet mode, and gas containing tin ash generated in the tin coating process is discharged from an exhaust hole.
However, the speed of manufacturing the solder strip is faster, which causes the tin quantity on the surface of the solder strip to be increased, and the conventional one-time tin blowing mode is difficult to blow off the tin quantity so much that the smoothness of the surface of the solder strip is affected.
Disclosure of Invention
The utility model aims to solve the technical problems that: in order to overcome the defects in the prior art, the utility model provides the tin-plated photovoltaic solder strip circular air knife based on secondary tin blowing, which can effectively remove tin on the surface of the solder strip and improve the surface smoothness of the solder strip.
The technical scheme adopted for solving the technical problems is as follows: the tinned photovoltaic solder strip circular air knife based on secondary tin blowing is provided with a lower shell and an upper shell which is matched with the upper end face of the lower shell, wherein the center of the lower end face of the upper shell is provided with a first cone part, the center of the upper end face of the lower shell is provided with a first cone groove, a first air collecting cavity is arranged in the upper shell, a second air collecting cavity is arranged in the lower shell, a separation plate is arranged between the lower shell and the upper shell in a sealing way, the center of the upper end face of the separation plate is provided with a second cone groove in clearance fit with the first cone part, and the center of the lower end face of the separation plate is provided with a second cone part in clearance fit with the first cone groove;
a first tin scraping area is arranged between the bottom of the first cone part and the bottom of the second cone groove, a second tin scraping area is arranged between the bottom of the second cone part and the bottom of the first cone groove, the first tin scraping area is communicated with the first gas collecting cavity through a gap between the first cone part and the second cone groove, and the second tin scraping area is communicated with the second gas collecting cavity through a gap between the second cone part and the first cone groove;
the lower end face of the lower shell is provided with an isolation cover with an integrated structure, an inner cavity of the isolation cover is communicated with a first tin scraping area and a second tin scraping area, and exhaust holes are circumferentially and uniformly distributed in the peripheral wall of the isolation cover.
Further, the two sides of the upper shell are respectively connected with a first air inlet pipe communicated with the first air collecting cavity, and the two sides of the lower shell are respectively connected with a second air inlet pipe communicated with the second air collecting cavity.
Preferably, a first through hole is formed in the inner bottom of the first cone, a second through hole is formed in the bottom of the first cone, a transition hole is formed in the center of the partition plate, a first tin scraping area is formed between the upper end of the transition hole and the first through hole, and a second tin scraping area is formed between the lower end of the transition hole and the second through hole.
Specifically, the upper shell, the lower shell and the partition plate are fixedly connected through bolts, and sealing rings are respectively arranged between the partition plate and the upper shell and between the partition plate and the lower shell.
The beneficial effects of the utility model are as follows: according to the utility model, the first tin scraping area is formed between the partition plate and the upper shell, and the second tin scraping area is formed between the partition plate and the lower shell, so that the tin-plated welding strip can be subjected to secondary tin blowing treatment, the tin carrying amount on the surface of the welding strip is effectively removed, and the surface smoothness quality of the welding strip is improved; and meanwhile, the lower shell is provided with an isolation cover for isolating air, so that nitrogen in the isolation cover is isolated from the air outside, redundant tin ash, tin slag and the like are avoided in the isolation cover, and exhaust holes are formed in the periphery of the isolation cover, so that the nitrogen in the isolation cover can be exhausted from the air holes.
Drawings
The utility model will be further described with reference to the drawings and embodiments.
Fig. 1 is a schematic top view of the present utility model.
Fig. 2 is a schematic view of the sectional structure in the direction A-A in fig. 1.
Fig. 3 is a schematic sectional view of the structure in the direction B-B in fig. 1.
In the figure: 1. the device comprises a lower shell, an upper shell, a partition plate, a first gas collecting cavity, a second gas collecting cavity, a first gas inlet pipe, a second gas inlet pipe, a first cone portion, a first cone-shaped groove, a second cone-shaped portion, a first tin scraping area, a second tin scraping area, a shielding cover and a vent hole.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
As shown in fig. 1 to 3, a tinned photovoltaic solder strip circular air knife based on secondary tin blowing comprises a lower shell 1 and an upper shell 2 arranged on the upper end surface of the lower shell 1, wherein the upper shell 2 and the lower shell 1 are circular, a partition plate 3 is arranged between the upper shell 2 and the lower shell 1, sealing rings are respectively arranged between the partition plate 3 and the upper shell 2 and between the partition plate 3 and the lower shell 1, and the upper shell 2, the lower shell 1 and the partition plate 3 are fixedly connected into a whole through bolts.
The upper shell 2 is internally provided with an annular first air collection cavity 4, the lower shell 1 is internally provided with an annular second air collection cavity 5, two sides of the upper shell 2 are respectively connected with a first air inlet pipe 6 communicated with the first air collection cavity 4, and two sides of the lower shell 1 are respectively connected with a second air inlet pipe 7 communicated with the second air collection cavity 5.
The center of the lower end face of the upper shell 2 is provided with a first cone part 8, the center of the upper end face of the lower shell 1 is provided with a first cone groove 9, the center of the upper end face of the partition plate 3 is provided with a second cone groove 10 in clearance fit with the first cone part 8, and the center of the lower end face of the partition plate 3 is provided with a second cone part 11 in clearance fit with the first cone groove 9.
The first through hole is formed in the inner bottom of the first cone portion 8, the second through hole is formed in the inner bottom of the first cone groove 9, the transition hole is formed in the center of the partition plate 3, the upper end of the first through hole is communicated with the inner cavity of the first cone portion 8, a gap between the lower end of the first through hole and the upper end of the transition hole forms a first tin scraping area 12 for scraping the tin layer on the surface of the solder strip, and a second tin scraping area 13 for scraping the tin layer on the surface of the solder strip is formed between the lower end of the transition hole and the upper end of the second through hole.
The first tin scraping area 12 is communicated with the first gas collecting cavity 4 through a gap between the first cone portion 8 and the second cone-shaped groove 10, and the second tin scraping area 13 is communicated with the second gas collecting cavity 5 through a gap between the second cone portion 11 and the first cone-shaped groove 9.
The lower end face of the lower shell 1 is provided with an isolation cover 14 with an integrated structure, the inner cavity of the isolation cover 14 is communicated with the first tin scraping area 12 and the second tin scraping area 13 through a second through hole, and six exhaust holes 15 are circumferentially and uniformly distributed in the peripheral wall of the isolation cover 14.
External nitrogen enters the first air collecting cavity 4 through the first air inlet pipe 6, enters the second air collecting cavity 5 through the second air inlet pipe 7, nitrogen in the second air collecting cavity 5 passes through a gap between the second cone 11 and the first cone-shaped groove 9 to reach the second tin scraping area 13, the tin layer on the surface of the solder strip is scraped, then the nitrogen in the first air collecting cavity 4 passes through a gap between the first cone 8 and the second cone-shaped groove 10 to reach the first tin scraping area 12, the tin layer on the surface of the solder strip is scraped to a required size, and tin-containing gas blown to the solder strip enters the inner cavity of the isolation cover 14 and is discharged through the exhaust hole 15.
According to the annular air knife, through the annular air outlet mode, the uniformity of stress in the circumferential direction of the annular air knife is effectively ensured when the tinning layer of the circular welding strip is processed, so that the uniformity and smoothness of the thickness of the tinning layer on the peripheral surface of the circular welding strip are ensured; through setting up division board 3, form first tin scraping district 12 between division board 3 and last casing 2, form second tin scraping district 13 between division board 3 and the lower casing 2 to can carry out the secondary to tin-plating solder strip and blow tin processing, effectively get rid of solder strip surface area tin volume, improve solder strip surface's smooth finish quality, can greatly reduce the formation of wind sword lower edge tin ash simultaneously.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (4)
1. Tin-plated photovoltaic solder strip annular air knife based on secondary tin blowing has lower casing, cooperation setting at the last casing of casing up end down, and the terminal surface center has first cone portion under the last casing, and lower casing up end center has first conical groove, is equipped with first gas collecting cavity in the last casing, is equipped with second gas collecting cavity in the lower casing, characterized by: a partition plate is arranged between the lower shell and the upper shell in a sealing way, the center of the upper end surface of the partition plate is provided with a second conical groove in clearance fit with the first conical groove, and the center of the lower end surface of the partition plate is provided with a second conical part in clearance fit with the first conical groove;
a first tin scraping area is arranged between the bottom of the first cone part and the bottom of the second cone groove, a second tin scraping area is arranged between the bottom of the second cone part and the bottom of the first cone groove, the first tin scraping area is communicated with the first gas collecting cavity through a gap between the first cone part and the second cone groove, and the second tin scraping area is communicated with the second gas collecting cavity through a gap between the second cone part and the first cone groove;
the lower end face of the lower shell is provided with an isolation cover with an integrated structure, an inner cavity of the isolation cover is communicated with a first tin scraping area and a second tin scraping area, and exhaust holes are circumferentially and uniformly distributed in the peripheral wall of the isolation cover.
2. The secondary tin blowing-based tin-plated photovoltaic solder strip annular air knife as set forth in claim 1, wherein: the two sides of the upper shell are respectively connected with a first air inlet pipe communicated with the first air collecting cavity, and the two sides of the lower shell are respectively connected with a second air inlet pipe communicated with the second air collecting cavity.
3. The secondary tin blowing-based tin-plated photovoltaic solder strip annular air knife as set forth in claim 1, wherein: the first cone is characterized in that a first through hole is formed in the inner bottom of the first cone, a second through hole is formed in the bottom of the first cone, a transition hole is formed in the center of the partition plate, a first tin scraping area is formed between the upper end of the transition hole and the first through hole, and a second tin scraping area is formed between the lower end of the transition hole and the second through hole.
4. The secondary tin blowing-based tin-plated photovoltaic solder strip annular air knife as set forth in claim 1, wherein: the upper shell, the lower shell and the partition plate are fixedly connected through bolts, and sealing rings are respectively arranged between the partition plate and the upper shell and between the partition plate and the lower shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320791771.1U CN219363766U (en) | 2023-04-11 | 2023-04-11 | Tinning photovoltaic solder strip annular air knife based on secondary tin blowing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320791771.1U CN219363766U (en) | 2023-04-11 | 2023-04-11 | Tinning photovoltaic solder strip annular air knife based on secondary tin blowing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219363766U true CN219363766U (en) | 2023-07-18 |
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ID=87114659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320791771.1U Active CN219363766U (en) | 2023-04-11 | 2023-04-11 | Tinning photovoltaic solder strip annular air knife based on secondary tin blowing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219363766U (en) |
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2023
- 2023-04-11 CN CN202320791771.1U patent/CN219363766U/en active Active
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