Tin plating equipment for photovoltaic welding strip production

Abstract

The utility model discloses tin coating equipment for photovoltaic welding strip production, relates to the technical field of photovoltaic welding strip production, and solves the technical problems that an existing tin coating device cannot coat the two sides of a welding strip at the same time, tin paste is likely to be coated on a copper strip unevenly, the tin coating effect is likely to be poor, and the tin coating efficiency is reduced. Comprising a tin coating bin, a coating cavity, a curing cavity and a solder paste storage bin on the side face, the two guide wheel sets are arranged in the coating cavity and the curing cavity correspondingly, and each guide wheel set comprises an upper rotating rod, a lower rotating rod, a cam arranged on the upper rotating rod in a sleeving mode and a concave wheel arranged on the lower rotating rod in a sleeving mode, a coating assembly; according to the utility model, the double-sided coating of the photovoltaic welding strip can be synchronously realized, and meanwhile, under the action of the upper scraper blade and the lower scraper blade, when the photovoltaic welding strip is conveyed, the coated solder paste can be scraped to be flat, so that the solder paste is more uniformly smeared on the photovoltaic welding strip, and the tin coating effect and the tin coating efficiency are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic welding strip production, and in particular relates to tinning equipment for photovoltaic welding strip production. Background Art

[0002] Most photovoltaic welding strips are made by hot-dip tin coating on copper strips, allowing the molten tin to form a coating layer of a certain thickness on the surface of the copper strip, giving the welding strip the ability to weld.

[0003] At present, during the tinning process of photovoltaic solder strips, the solder strips are generally pressed into the tinning machine through a guide wheel, and then the required solder paste is evenly applied to both sides of the copper strip for tinning. However, due to structural problems, the existing tinning device can only apply tin to one side of the copper strip in one operation, and cannot apply tin to both sides of the solder strip at the same time. In addition, the solder paste is easily unevenly applied on the copper strip, which easily leads to poor tinning effect and reduces the tinning efficiency.

[0004] Therefore, based on the above problems, we designed a tin coating equipment for photovoltaic ribbon production. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a tinning device for photovoltaic solder strip production, which solves the technical problem that the existing tinning device can only apply tin material to one side of the copper strip in one operation due to structural problems, and cannot apply tin material to both sides of the solder strip at the same time, and it is easy to make the solder paste on the copper strip unevenly, which easily leads to poor tinning effect and reduces the tinning efficiency.

[0006] To achieve the above-mentioned purpose, according to the embodiment of the first aspect of the utility model, a tin coating device for photovoltaic solder strip production is provided, comprising a tin coating bin, a coating chamber and a curing chamber arranged in the tin coating bin, and a solder paste storage bin on the side;

[0007] Two sets of guide wheel groups are respectively arranged in the coating chamber and the curing chamber, and the guide wheel group includes an upper rotating rod and a lower rotating rod distributed up and down, a cam sleeved on the upper rotating rod and a concave wheel sleeved on the lower rotating rod;

[0008] The coating assembly comprises an upper coating tube and a lower coating tube which are arranged in a coating cavity and connected to a material guide port at their ends, a plurality of coating nozzles and side scrapers which are equidistantly arranged at the bottom of the upper coating tube and a coating nozzle and side scrapers at the top of the lower coating tube.

[0009] A further improvement is that the tin coating bin is provided with a heat dissipation groove at the top of the corresponding curing chamber, and a group of heat dissipation and cooling fans are provided in the heat dissipation groove. The heat dissipation and cooling fans are used to cool the solder strip after the solder paste is applied, so that the solder paste on the solder strip can solidify as soon as possible.

[0010] A further improvement is that a piston push rod is arranged in the solder paste storage bin, a hydraulic cylinder is arranged on the side of the solder paste storage bin and connected to the piston push rod, and a material guide port of the solder paste storage bin is arranged on one side of the coating chamber, and the piston push rod is driven by the hydraulic cylinder to extrude the solder paste.

[0011] A further improvement is that the cams on each group of the upper rotating rods and the concave wheels on the lower rotating rods are staggered, and each cam is aligned with the center of the concave wheel, so as to independently convey each welding strip.

[0012] A further improvement is that the device also includes a solder strip conveying seat arranged on both sides of the tinning bin and a plurality of partition plates arranged in the ports of the solder strip conveying seat, and an independent conveying area is formed between each adjacent partition plate for independent conveying of each solder strip.

[0013] A further improvement is that the coating nozzles of the upper coating tube and the lower coating tube and the ports of the scraper are opposite to each other, and are used for double-sided coating and scraping of the welding strip respectively.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) The utility model provides a guide wheel group and a plurality of independent conveying areas, so that the photovoltaic welding ribbons to be coated are sequentially conveyed from the independent conveying areas into the coating chamber by the staff, and are placed between each independent cam and the concave wheel, so that photovoltaic welding ribbons of different specifications can be guided and conveyed, and mutual influence during the transmission process can be avoided, and the work efficiency is higher;

[0016] (2) The utility model provides a coating assembly, which is composed of coating nozzles and scrapers of an upper coating tube and a lower coating tube. In this way, the hydraulic cylinder is used to drive the piston push rod to extrude the solder paste, which then flows out from the coating nozzles in the upper coating tube and the lower coating tube to the photovoltaic welding strip, thereby achieving the coating of both sides of the photovoltaic welding strip simultaneously. At the same time, under the action of the upper and lower scrapers, the coated solder paste can be scraped flat when the photovoltaic welding strip is conveyed, so that the solder paste can be more evenly applied to the photovoltaic welding strip, effectively improving the tin coating effect and tin coating efficiency;

[0017] (3) According to the utility model, after the coating is completed and the solder paste is transported to the curing chamber, the solder strip coated with solder paste is cooled by a heat dissipation and cooling fan, so that the solder paste on the solder strip can be cured as quickly as possible, thereby preventing the solder paste from sticking and affecting the tin coating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the cross-sectional top view of the structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the utility model in a front view in cross section;

[0021] Figure 4 It is a schematic diagram of the side structure of the guide wheel group of the utility model.

[0022] Markings in the figure:

[0023] 1. Welding ribbon conveyor seat; 11. Partition plate; 12. Independent conveying area; 2. Tin coating bin; 21. Heat dissipation and cooling fan; 22. Heat dissipation slot; 23. Coating chamber; 24. Curing chamber; 3. Solder paste storage bin; 31. Piston push rod; 32. Hydraulic cylinder; 4. Coating assembly; 41. Upper coating tube; 42. Lower coating tube; 43. Coating nozzle; 44. Scraper; 5. Guide wheel group; 51. Upper rotating rod; 52. Lower rotating rod; 53. Cam; 54. Concave wheel. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1 and Figure 2 As shown, a tin coating device for photovoltaic solder strip production includes a tin coating bin 2, a coating chamber 23 and a curing chamber 24 arranged in the tin coating bin 2, and a solder paste storage bin 3 on the side;

[0026] The solder paste storage bin 3 includes a piston push rod 31 disposed in the solder paste storage bin 3, a hydraulic cylinder 32 disposed on the side of the solder paste storage bin 3 and connected to the piston push rod 31, and a material guide port of the solder paste storage bin 3 is disposed on one side of the coating chamber 23, and the hydraulic cylinder 32 provides power to drive the piston push rod 31 to extrude the solder paste;

[0027] like Figures 2 to 4 As shown, two sets of guide wheel groups 5 are respectively arranged in the coating chamber 23 and the curing chamber 24. The guide wheel group 5 includes an upper rotating rod 51 and a lower rotating rod 52 distributed up and down, a cam 53 sleeved on the upper rotating rod 51 and a concave wheel 54 sleeved on the lower rotating rod 52;

[0028] The cams 53 on each set of upper rotating rods 51 and the concave wheels 54 on the lower rotating rods 52 are staggered, and each cam 53 is aligned with the center of the concave wheel 54. The device also includes a solder strip conveying seat 1 arranged on both sides of the tinning bin 2 and a plurality of partition plates 11 arranged in the port of the solder strip conveying seat 1. An independent conveying area 12 is formed between each adjacent partition plate 11 for independent conveying of each solder strip.

[0029] like Figure 2 and Figure 3 As shown, the coating component 4 includes an upper coating tube 41 and a lower coating tube 42 which are arranged in the coating chamber 23 and connected to the material guide port at the ends, a plurality of coating nozzles 43 and side scrapers 44 which are equidistantly arranged at the bottom of the upper coating tube 41 and a coating nozzle 43 and side scrapers 44 at the top of the lower coating tube 42.

[0030] Among them, the ports of the coating nozzles 43 and scrapers 44 of the upper coating tube 41 and the lower coating tube 42 are opposite, and the number of coating nozzles 43 and scrapers 44 is the same as the number of independent conveying areas 12, which are respectively used for double-sided coating and flattening of the welding strip.

[0031] like Figure 1 and Figure 3 As shown, in the embodiment, the tin coating bin 2 is provided with a heat dissipation groove 22 at the top of the corresponding curing chamber 24, and a group of heat dissipation and cooling fans 21 are provided in the heat dissipation groove 22. The heat dissipation and cooling fans 21 are used to cool the solder strip after the solder paste is applied, so that the solder paste on the solder strip can be cured as soon as possible.

[0032] like Figures 1 to 4 As shown, in this embodiment, it should be noted that the actual size of each component in the application document is selected according to the actual needs of the site. Before implementation, a sufficient amount of solder paste is pre-filled into the solder paste storage bin 3. In addition, it should be noted that the coating in the application document is suitable for the coating of photovoltaic solder strips after annealing and cooling, and only improves the shortcomings of low coating efficiency and poor coating effect, and does not involve other aspects; the working principle of the tinning equipment for photovoltaic solder strip production is introduced as follows:

[0033] During installation and use, by setting the guide wheel group 5 and several independent conveying areas 12, the photovoltaic welding ribbons to be coated are sequentially delivered from the independent conveying areas 12 to the coating chamber 23 by the staff, and are placed between each independent cam 53 and the concave wheel 54, so that photovoltaic welding ribbons of different specifications can be guided and transported, and mutual influence during the transmission process can be avoided, and the working efficiency is higher;

[0034] By setting up a coating assembly 4, the coating assembly 4 is composed of a coating nozzle 43 and a scraper 44 of an upper coating tube 41 and a lower coating tube 42, so that the piston push rod 31 is driven by the hydraulic cylinder 32 to extrude the solder paste, and then flows out from the coating nozzle 43 in the upper coating tube 41 and the lower coating tube 42 to the photovoltaic welding strip, and the double-sided coating of the photovoltaic welding strip is realized simultaneously. At the same time, under the action of the upper and lower scrapers 44, the coated solder paste can be scraped flat when the photovoltaic welding strip is conveyed, so that the solder paste can be more evenly applied to the photovoltaic welding strip, which effectively improves the tin coating effect and tin coating efficiency;

[0035] After the coating is completed and transported to the curing chamber 24, the solder strip coated with solder paste is cooled by the heat dissipation and cooling fan 21, so that the solder paste on the solder strip can be cured as soon as possible to avoid the solder paste from sticking and affecting the tin coating effect.

[0036] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A tin coating device for photovoltaic ribbon production, characterized in that: It comprises a tin coating bin (2), a coating chamber (23) and a curing chamber (24) arranged in the tin coating bin (2), and a tin paste storage bin (3) on the side; Two sets of guide wheel assemblies (5) are respectively arranged in the coating chamber (23) and the curing chamber (24), the guide wheel assemblies (5) comprising an upper rotating rod (51) and a lower rotating rod (52) distributed up and down, a cam (53) sleeved on the upper rotating rod (51) and a concave wheel (54) sleeved on the lower rotating rod (52); A coating assembly (4), the coating assembly (4) comprising an upper coating tube (41) and a lower coating tube (42) which are arranged in a coating chamber (23) and connected at their ends to a material guide port, a plurality of coating nozzles (43) and side scrapers (44) which are equidistantly arranged at the bottom of the upper coating tube (41), and a coating nozzle (43) and side scrapers (44) which are arranged at the top of the lower coating tube (42).

2. The tin coating equipment for photovoltaic ribbon production according to claim 1 is characterized in that: The tin coating bin (2) is provided with a heat dissipation groove (22) at the top end corresponding to the curing chamber (24), and a group of heat dissipation and cooling fans (21) are provided in the heat dissipation groove (22).

3. The tin coating equipment for photovoltaic ribbon production according to claim 1 is characterized in that: The solder paste storage bin (3) includes a piston push rod (31) disposed in the solder paste storage bin (3), a hydraulic cylinder (32) disposed on a side of the solder paste storage bin (3) and connected to the piston push rod (31), and a material guide port of the solder paste storage bin (3) disposed on a side of the coating chamber (23).

4. The tin coating equipment for photovoltaic ribbon production according to claim 1 is characterized in that: The cams (53) on each set of the upper rotating rod (51) and the concave wheels (54) on the lower rotating rod (52) are staggered and distributed, and each cam (53) is aligned with the center of the concave wheel (54).

5. The tin coating equipment for photovoltaic ribbon production according to claim 1, characterized in that: The device further comprises a solder strip conveying seat (1) arranged on both sides of the tinning bin (2) and a plurality of partition plates (11) arranged in the ports of the solder strip conveying seat (1), wherein an independent conveying area (12) is formed between each adjacent partition plate (11).

6. The tin coating equipment for photovoltaic ribbon production according to claim 1, characterized in that: The coating nozzles (43) and the ports of the scraper (44) of the upper coating tube (41) and the lower coating tube (42) are opposite to each other.

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