Processing system for photovoltaic reflective bus bar
By integrating a processing system that includes wire feeding, wire drawing, rolling, trimming, polishing, heat treatment, and tin coating and curing, the problems of low processing efficiency and uneven tin layer of busbars have been solved, achieving efficient and low-cost processing of photovoltaic reflective busbars.
Patent Information
- Application Number
- CN202520428524.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Existing busbar processing equipment suffers from low processing efficiency, high cost, and uneven tin layer. In particular, the surface of the busbar after being flattened by the pressure roller is rough, and the outer surface is uneven after tin plating. Furthermore, the separation of each process leads to a discontinuous overall process.
The system employs an integrated process of wire feeding, wire drawing, rolling, trimming, polishing, heat treatment, and tin coating and curing. The wire feeding device provides raw materials, the wire drawing device stretches the wire, the rolling device initially shapes the wire, the trimming device trims and shapes the wire, the polishing device polishes one side, the heat treatment device anneals the wire, and the tin coating and curing device forms a uniform tin layer, thus achieving continuous processing.
It improves processing efficiency, reduces costs, and makes the tin layer smoother, thus improving the surface quality of the busbar.
Smart Images
Figure CN223833850U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of busbar processing technology, and in particular to a processing system for photovoltaic reflective busbars. Background Technology
[0002] Existing busbar processing equipment typically uses a pressure roller to flatten raw copper strips to a predetermined thickness, followed by post-processing equipment to remove the burrs at both ends of the copper strip to obtain the busbar. However, the busbar obtained by directly flattening it with a pressure roller has a relatively rough texture on both the top and bottom surfaces, which is not flat and smooth enough. This results in uneven tin layer on the outer surface of the busbar after tin plating. Furthermore, the pressure roller process, deburring process, and tin plating process are usually separate steps, which cannot realize a complete processing flow from raw material to finished product, leading to increased costs and low processing efficiency, which urgently needs improvement. Utility Model Content
[0003] The purpose of this invention is to provide a processing system for photovoltaic reflective busbars, which has the effects of improving processing efficiency, reducing processing costs, and improving the flatness of the tin layer on the busbar.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A processing system for photovoltaic reflective busbars, comprising, in sequence:
[0005] The equipment includes a wire feeding device, a wire drawing device, and a roller pressing device. The raw material strip provided by the wire feeding device is drawn into wire by the wire drawing device and then conveyed to the roller pressing device.
[0006] The trimming device includes a trimming and shaping structure, which is used to trim and shape the busbar formed by the rolling device.
[0007] Polishing device, used to polish one side of the busbar;
[0008] A heat treatment apparatus for annealing the busbar;
[0009] The tin coating and curing device includes a tin coating module and a blow-and-curing module. The tin coating module is used to coat the outside of the busbar with a tin layer, and the blow-and-curing module is used to blow the tin layer wrapped around the busbar to cure the tin layer and uniformly coat the outside of the busbar.
[0010] By adopting the above technical solution, the wire feeding device provides raw copper strips, the wire drawing device stretches the raw copper strips, and the rolling device rolls the stretched copper strips, causing the copper strips to be initially shaped into a busbar. The busbar is then transported to the trimming device, where the trimming and shaping structure trims and shapes the busbar. Afterward, the busbar is polished on one side by a polishing device, making one side of the busbar a smooth mirror surface, while simultaneously making both sides of the busbar flatter. Finally, the busbar undergoes a heat treatment process. The busbar undergoes an annealing process to make it more flexible and eliminate stress. It then enters a tin-coating and curing unit where a tin layer is formed around it using a tin-coating module. The tin coating on the mirror side of the busbar, after being treated by a polishing unit, is more uniform, resulting in a mirror-like surface. Finally, a blowing and curing module evenly cures the tin onto the copper strip sidewalls, forming the final busbar product. This process improves processing efficiency, reduces processing costs, and enhances the flatness of the tin layer on the busbar.
[0011] A further feature of this invention is that the roller pressing device includes at least two sets of roller pressing modules, each roller pressing module including an upper pressing roller and a lower pressing roller arranged opposite to each other, and a drive motor that drives the upper pressing roller and the lower pressing roller to rotate relative to each other.
[0012] By adopting the above technical solution, the drive motor drives the upper and lower pressure rollers to rotate relative to each other, thereby flattening the raw copper strip to form the initial shape of the busbar.
[0013] A further feature of this invention is that the roller pressing module includes a frame for mounting the upper and lower pressing rollers, and a first lifting drive module is provided on the frame. The output end of the first lifting drive module acts on the upper pressing roller, and the first lifting drive module can drive the upper pressing roller to move relatively closer to or away from the lower pressing roller.
[0014] By adopting the above technical solution, the first lifting drive module can drive the upper pressure roller to move up and down, thereby adjusting the distance between the upper pressure roller and the lower pressure roller.
[0015] A further feature of this invention is that the first lifting drive module includes a servo motor, a reduction transmission assembly, and a lead screw pair structure. The upper pressure roller is slidably disposed on the frame. The output end of the lead screw pair structure is connected to the upper pressure roller. The servo motor is fixed on the frame. The servo motor drives the upper pressure roller to move up and down through the reduction transmission assembly and the lead screw pair structure.
[0016] By adopting the above technical solution, the servo motor drives the lead screw structure to move through the speed reduction transmission component, and the lead screw structure drives the upper pressure roller to move up and down.
[0017] A further feature of this invention is that: a guide groove is vertically provided inside the frame; the upper pressure roller is rotatably disposed inside the first lifting seat; the output end of the lead screw pair structure is connected to the first lifting seat; a guide rail is provided on the side wall of the first lifting seat corresponding to the guide groove; and the guide rail is guided and engaged with the guide groove.
[0018] By adopting the above technical solution, the screw pair structure drives the first lifting seat to move the upper pressure roller up and down synchronously. At the same time, the guiding effect of the guide rail and guide groove makes the lifting direction of the first lifting seat more consistent.
[0019] A further feature of this invention is that the lower pressure roller is rotatably mounted in the first fixed seat, and the first fixed seat is provided with a plurality of first damping springs. When the upper pressure roller is relatively close to the lower pressure roller, the first lifting seat and the first fixed seat are elastically abutted against each other by the first damping springs.
[0020] By adopting the above technical solution, the first damping spring can achieve soft contact between the first lifting seat and the first fixed seat, effectively preventing damage caused by hard contact between parts. In addition, when the first lifting seat elastically resists the first fixed seat through the first damping spring, the first damping spring can play an elastic support role for the first lifting seat, improving the stability of the upper pressure roller running inside the first lifting seat.
[0021] A further feature of this invention is that the trimming and shaping structure includes a mounting base and a trimming block fixed on the mounting base. The trimming block has a shaping hole adapted to the busbar. The mounting base has a guide sleeve fixed at one end of the trimming block. The guide sleeve has a guide hole corresponding to the shaping hole. The busbar is guided into the shaping hole through the guide hole.
[0022] By adopting the above technical solution, the guiding effect of the guide hole on the guide sleeve can be used to guide the busbar through the shaping hole of the trimming block, thereby improving the trimming efficiency of the busbar by the trimming device.
[0023] A further feature of this invention is that the polishing device includes a support, an upper polishing roller and a lower conveying roller rotatably mounted on the support, and a drive assembly that drives the upper polishing roller and the lower conveying roller to rotate relative to each other.
[0024] By adopting the above technical solution, the drive component can drive the upper polishing roller and the lower conveying roller to rotate relative to each other. The upper polishing roller and the lower conveying roller are used to achieve fine rolling of the busbar, improve the thickness uniformity of the busbar, and at the same time, the upper polishing roller can polish and grind one side of the busbar, making the upper surface of the busbar smoother and flatter.
[0025] A further feature of this invention is that the bracket is provided with a second fixed seat and a second lifting seat, the upper polishing roller is rotatably mounted on the second lifting seat, the lower conveying roller is rotatably mounted on the second fixed seat, the second lifting seat is lifted and lowered on the bracket by a second lifting drive module, and the second fixed seat is provided with a plurality of second shock-absorbing springs. When the upper polishing roller is relatively close to the lower conveying roller, the second lifting seat and the second fixed seat are elastically abutted against each other by the second shock-absorbing springs.
[0026] By adopting the above technical solution, the second lifting drive module can drive the second lifting seat to move closer to or further away from the second fixed seat, thereby adjusting the distance between the upper polishing roller and the lower conveying roller. The second shock-absorbing spring can also buffer and dampen the second lifting seat and the second fixed seat.
[0027] A further feature of this invention is that the heat treatment device includes a short-circuit annealing module, a cooling water tank, a plurality of drive rollers and a tension roller assembly, wherein the drive rollers and the tension roller assembly cooperate to transport the busbar from the short-circuit annealing module to the cooling water tank.
[0028] By adopting the above technical solution, the short-circuit annealing module can short-circuit the copper busbar through the motor, so that the busbar receives high-energy electric sparks in a short time, thereby achieving the purpose of annealing, improving the flexibility of the busbar and eliminating its internal stress.
[0029] In summary, this utility model has the following beneficial effects:
[0030] The system employs a wire drawing device, a rolling device, a trimming device, a polishing device, a heat treatment device, and a tin coating and curing device, sequentially arranged behind the wire feeding device. The wire feeding device provides raw copper bars, the wire drawing device stretches the raw copper bars, and the rolling device rolls the stretched copper bars, shaping them into a preliminary busbar. The busbar is then transported to the trimming device, where its trimming and shaping structure trims and shapes the busbar. Finally, the busbar is polished on one side by the polishing device, resulting in a smooth mirror finish on one side. Simultaneously, both sides of the busbar are also polished. The busbar becomes smoother, and then undergoes annealing in a heat treatment device. Annealing makes the busbar more flexible and eliminates stress. Finally, the busbar enters a tin coating and curing device, where a tin layer is formed on the outside of the busbar by a tin coating module. The mirror side of the busbar treated by the polishing device has a more uniform tin coating, thus achieving a mirror-like effect on the side of the busbar. Afterwards, the tin is evenly cured on the side wall of the copper strip by a blow-and-curing module to form the final busbar product. This process improves processing efficiency, reduces processing costs, and improves the flatness of the tin layer on the busbar. Attached Figure Description
[0031] Figure 1 This is an overall structural diagram of the present invention.
[0032] Figure 2 This is a structural diagram of the roller pressing device of this utility model.
[0033] Figure 3 This is a utility model Figure 2 A magnified view of a portion of region A in the middle.
[0034] Figure 4 This is a structural diagram of the trimming device of this utility model.
[0035] Figure 5 This is a utility model Figure 4 A magnified view of a portion of region B in the middle.
[0036] Figure 6 This is a longitudinal sectional view of the trimming and shaping structure of this utility model.
[0037] Figure 7 This is a structural diagram of the polishing device of this utility model.
[0038] Figure 8 This is a structural diagram of the heat treatment device of this utility model.
[0039] Figure 9 This is a structural diagram of the tin coating and curing device of this utility model.
[0040] In the diagram: 1. Wire feeding device; 2. Wire drawing device; 3. Roller pressing device; 30. Frame; 301. Guide groove; 31. Upper pressure roller; 311. First lifting seat; 3111. Guide rail; 32. Lower pressure roller; 321. First fixed seat; 3211. First shock-absorbing spring; 33. First lifting drive module; 331. Servo motor; 332. Reduction transmission assembly; 333. Lead screw pair structure; 4. Dressing device; 41. Mounting seat; 42. Dressing block; 421. Shaping hole; 43. Guide... 431. Guide hole; 5. Polishing device; 51. Bracket; 511. Upper polishing roller; 5111. Second lifting seat; 512. Lower conveying roller; 5121. Second fixed seat; 513. Drive assembly; 514. Second damping spring; 6. Heat treatment device; 61. Short-circuit annealing module; 62. Cooling water tank; 63. Drive roller; 64. Tensioning roller assembly; 7. Tin coating and curing device; 70. Flux coating module; 71. Tin coating module; 72. Blow-out curing module. Detailed Implementation
[0041] The present invention will be further described below with reference to the accompanying drawings.
[0042] A processing system for photovoltaic reflective busbars, such as Figure 1-9As shown, the device includes a wire feeding device 1, a wire drawing device 2, a rolling device 3, a trimming device 4, a polishing device 5, a heat treatment device 6, and a tin coating and curing device 7 arranged in sequence. The raw material strip provided by the wire feeding device 1 is drawn by the wire drawing device 2 and then conveyed to the rolling device 3. The trimming device 4 includes an edge trimming and shaping structure, which is used to trim and shape the busbar formed by the rolling device 3. The polishing device 5 is used to polish the busbar on one side. The heat treatment device 6 is used to anneal the busbar. The tin coating and curing device 7 includes a flux coating module 70, a tin coating module 71, and a blow-and-curing module 72. The flux coating module 70 is used to uniformly coat a layer of flux on the outside of the busbar. Then, the tin coating module 71 is used to wrap a tin layer on the outside of the busbar. Finally, the blow-and-curing module 72 is used to blow the tin layer wrapped on the outside of the busbar, so that the tin layer is cured and uniformly wrapped on the outside of the busbar.
[0043] like Figure 2-3As shown, the rolling device 3 includes at least two sets of rolling modules. Each rolling module includes an upper pressure roller 31 and a lower pressure roller 32 arranged opposite to each other, and a drive motor that drives the upper pressure roller 31 and the lower pressure roller 32 to rotate relative to each other. The drive motor drives the upper pressure roller 31 and the lower pressure roller 32 to rotate relative to each other, thereby flattening the raw copper strip to form the preliminary shape of the confluence belt. The rolling module includes a frame 30 for mounting the upper pressure roller 31 and the lower pressure roller 32. A first lifting drive module 33 is provided on the frame 30. The output end of the first lifting drive module 33 acts on the upper pressure roller 31. The first lifting drive module 33 can drive the upper pressure roller 31 to move closer to or further away from the lower pressure roller 32, and the first lifting drive module 33 can drive the upper pressure roller 31 to move up and down. This allows for adjustment of the distance between the upper pressure roller 31 and the lower pressure roller 32. The first lifting drive module 33 includes a servo motor 331, a reduction transmission assembly 332, and a lead screw pair structure 333. The upper pressure roller 31 is slidably mounted on the frame 30. The output end of the lead screw pair structure 333 is connected to the upper pressure roller 31. The servo motor 331 is fixed on the frame 30. The servo motor 331 drives the upper pressure roller 31 to move up and down through the reduction transmission assembly 332 and the lead screw pair structure 333. The servo motor 331 drives the lead screw pair structure 333 to move through the reduction transmission assembly 332, and the lead screw pair structure 333 drives the upper pressure roller 31 to move up and down. A guide groove 301 is vertically opened inside the frame 30, allowing the upper pressure roller 31 to rotate. The first lifting seat 311 is housed within the first lifting seat 311. The output end of the lead screw pair structure 333 is connected to the first lifting seat 311. A guide rail 3111 is provided on the side wall of the first lifting seat 311 corresponding to the guide groove 301. The guide rail 3111 and the guide groove 301 are guided and engaged. The lead screw pair structure 333 drives the first lifting seat 311 to move the upper pressure roller 31 synchronously up and down. At the same time, the guiding effect of the guide rail 3111 and the guide groove 301 makes the lifting direction of the first lifting seat 311 more consistent. The lower pressure roller 32 is rotatably mounted within the first fixed seat 321. The first fixed seat 321 is provided with several first damping springs 3211. When the upper pressure roller 31 is relatively close to the lower pressure roller 32, the first lifting seat 311 and the first fixed seat 321... The first lifting seat 311 and the first fixed seat 321 are elastically abutted by the first shock-absorbing spring 3211. The first shock-absorbing spring 3211 can achieve soft contact between the first lifting seat 311 and the first fixed seat 321, effectively preventing damage caused by hard contact between the parts. In addition, when the first lifting seat 311 and the first fixed seat 321 are elastically abutted by the first shock-absorbing spring 3211, the first shock-absorbing spring 3211 can play an elastic support role for the first lifting seat 311, improving the smoothness of the operation of the upper pressure roller 31 inside the first lifting seat 311. In this embodiment, the first lifting seat 311 and the first fixed seat 321 are provided with an inward clearance space, which allows the upper pressure roller 31 and the lower pressure roller 32 to fit together.
[0044] like Figure 4-6As shown, the trimming and shaping structure includes a mounting base 41 and a trimming block 42 fixed on the mounting base 41. The trimming block 42 has a shaping hole 421 adapted to the busbar. The mounting base 41 has a guide sleeve 43 fixed at one end of the trimming block 42. The guide sleeve 43 has a guide hole 431 corresponding to the shaping hole 421. The busbar is guided into the shaping hole 421 through the guide hole 431. By utilizing the guiding effect of the guide hole 431 on the guide sleeve 43, the busbar can be guided through the shaping hole 421 of the trimming block 42, thereby improving the trimming efficiency of the trimming device 4 on the busbar. In this embodiment, the trimming device 4 is provided with several drive rollers 63 and tension roller assemblies 64. The rolling device 3 and the polishing device 5 are also provided with multiple sets of tension roller assemblies 64. The drive rollers 63 are driven by a motor and cooperate with the tension roller assemblies 64 to keep the busbar in a taut state and transport it smoothly between the various devices.
[0045] like Figure 7 As shown, the polishing device 5 includes a support 51, an upper polishing roller 511 and a lower conveying roller 512 rotatably mounted on the support 51, and a drive assembly 513 that drives the upper polishing roller 511 and the lower conveying roller 512 to rotate relative to each other. The drive assembly 513 can drive the upper polishing roller 511 and the lower conveying roller 512 to rotate relative to each other, thereby achieving fine rolling of the busbar and improving the thickness uniformity of the busbar. At the same time, the upper polishing roller 511 can polish and grind one side of the busbar, making the upper surface of the busbar smoother and flatter. The support 51 is provided with a second fixed seat 5121 and a second lifting seat 5111. The upper polishing roller 511 is rotatably mounted on the second lifting seat 5111, and the lower... The conveying roller 512 is rotatably mounted on the second fixed seat 5121. The second lifting seat 5111 is lifted and lowered on the bracket 51 via the second lifting drive module. The second fixed seat 5121 is provided with several second damping springs 514. When the upper polishing roller 511 is relatively close to the lower conveying roller 512, the second lifting seat 5111 and the second fixed seat 5121 are elastically abutted against each other by the second damping springs 514. The second lifting drive module can be used to drive the second lifting seat 5111 to be relatively closer to or further away from the second fixed seat 5121, thereby adjusting the distance between the upper polishing roller 511 and the lower conveying roller 512. The second damping springs 514 can also buffer and dampen the second lifting seat 5111 and the second fixed seat 5121.
[0046] like Figure 8As shown, the heat treatment device 6 includes a short-circuit annealing module 61, a cooling water tank 62, several drive rollers 63, and a tension roller assembly 64. The drive rollers 63 and the tension roller assembly 64 cooperate to transport the busbar from the short-circuit annealing module 61 to the cooling water tank 62. The short-circuit annealing module 61 can short-circuit the copper busbar through a motor, so that the busbar receives a high-energy electric spark in a short time, thereby achieving the purpose of annealing, improving the flexibility of the busbar and eliminating its internal stress.
[0047] The basic working principle of this utility model is as follows: A wire drawing device 2, a rolling device 3, a trimming device 4, a polishing device 5, a heat treatment device 6, and a tin coating and curing device 7 are sequentially arranged behind the wire feeding device 1. The wire feeding device 1 provides raw copper strips. The wire drawing device 2 stretches the raw copper strips. The rolling device 3 rolls the stretched copper strips from the wire drawing device 2, causing the copper strips to be formed into a preliminary shape by the rollers. The busbar is then transported to the trimming device 4, where the trimming and shaping structure trims and shapes the busbars. Finally, the busbar is polished on one side by the polishing device 5, resulting in a smooth, mirror-like surface on one side of the busbar. Simultaneously, the two sides of the busbar are made flatter. Then, the busbar is annealed by the heat treatment device 6. The annealing process makes the busbar more flexible and eliminates stress in the busbar. Finally, the busbar enters the tin coating and curing device 7. A tin layer is formed on the outside of the busbar by the tin coating module 71. The mirror side of the busbar treated by the polishing device 5 has a more uniform tin coating, thereby achieving a mirror effect on the side of the busbar. Then, the tin is uniformly cured on the side wall of the copper strip by the blowing and curing module 72 to form the final busbar product. This process has the effects of improving processing efficiency, reducing processing costs, and improving the flatness of the tin layer on the busbar.
[0048] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.
Claims
1. A processing system for photovoltaic reflective busbars, characterized in that, Including the following settings in sequence: The wire feeding device (1), the wire drawing device (2), and the roller pressing device (3) are provided. The raw material strip provided by the wire feeding device (1) is drawn by the wire drawing device (2) and then conveyed to the roller pressing device (3). The trimming device (4) includes a trimming and shaping structure, which is used to trim and shape the busbar formed by the rolling device (3). Polishing device (5) is used to polish the busbar on one side. Heat treatment apparatus (6) for annealing the busbar; The tin coating and curing device (7) includes a tin coating module (71) and a blow-and-curing module (72). The tin coating module (71) is used to coat the outside of the busbar with a tin layer, and the blow-and-curing module (72) is used to blow the tin layer wrapped outside the busbar so that the tin layer is cured and uniformly wrapped outside the busbar.
2. The processing system for photovoltaic reflective busbars according to claim 1, characterized in that: The roller pressing device (3) includes at least two sets of roller pressing modules, each roller pressing module including an upper pressing roller (31) and a lower pressing roller (32) arranged opposite to each other, and a drive motor that drives the upper pressing roller (31) and the lower pressing roller (32) to rotate relative to each other.
3. The processing system for photovoltaic reflective busbars according to claim 2, characterized in that: The roller pressing module includes a frame (30) for mounting the upper pressure roller (31) and the lower pressure roller (32). The frame (30) is provided with a first lifting drive module (33). The output end of the first lifting drive module (33) acts on the upper pressure roller (31). The first lifting drive module (33) can drive the upper pressure roller (31) to move relatively closer to or away from the lower pressure roller (32).
4. The processing system for photovoltaic reflective busbars according to claim 3, characterized in that: The first lifting drive module (33) includes a servo motor (331), a reduction transmission assembly (332), and a lead screw pair structure (333). The upper pressure roller (31) is slidably disposed on the frame (30). The output end of the lead screw pair structure (333) is connected to the upper pressure roller (31). The servo motor (331) is fixed on the frame (30). The servo motor (331) drives the upper pressure roller (31) to move up and down through the reduction transmission assembly (332) and the lead screw pair structure (333).
5. The processing system for a photovoltaic reflective busbar according to claim 4, characterized in that: The frame (30) has a vertically oriented guide groove (301) inside. The upper pressure roller (31) is rotatably mounted inside the first lifting seat (311). The output end of the lead screw pair structure (333) is connected to the first lifting seat (311). The side wall of the first lifting seat (311) is provided with a guide rail (3111) corresponding to the guide groove (301). The guide rail (3111) is guided and engaged with the guide groove (301).
6. The processing system for photovoltaic reflective busbars according to claim 5, characterized in that: The lower pressure roller (32) is rotatably disposed within the first fixed seat (321). The first fixed seat (321) is provided with a plurality of first damping springs (3211). When the upper pressure roller (31) is relatively close to the lower pressure roller (32), the first lifting seat (311) and the first fixed seat (321) are elastically abutted against each other by the first damping springs (3211).
7. The processing system for photovoltaic reflective busbars according to claim 1, characterized in that: The trimming and shaping structure includes a mounting base (41) and a trimming block (42) fixed on the mounting base (41). The trimming block (42) has a shaping hole (421) adapted to the busbar. The mounting base (41) has a guide sleeve (43) fixed at one end of the trimming block (42). The guide sleeve (43) has a guide hole (431) corresponding to the shaping hole (421). The busbar is guided into the shaping hole (421) through the guide hole (431).
8. The processing system for photovoltaic reflective busbars according to claim 1, characterized in that: The polishing device (5) includes a support (51), an upper polishing roller (511) and a lower conveying roller (512) rotatably mounted on the support (51), and a drive assembly (513) that drives the upper polishing roller (511) and the lower conveying roller (512) to rotate relative to each other.
9. A processing system for photovoltaic reflective busbars according to claim 8, characterized in that: The bracket (51) is provided with a second fixed seat (5121) and a second lifting seat (5111). The upper polishing roller (511) is rotatably mounted on the second lifting seat (5111), and the lower conveying roller (512) is rotatably mounted on the second fixed seat (5121). The second lifting seat (5111) is lifted and lowered on the bracket (51) by a second lifting drive module. The second fixed seat (5121) is provided with a plurality of second shock-absorbing springs (514). When the upper polishing roller (511) is relatively close to the lower conveying roller (512), the second lifting seat (5111) and the second fixed seat (5121) are elastically abutted against each other by the second shock-absorbing springs (514).
10. A processing system for photovoltaic reflective busbars according to claim 1, characterized in that: The heat treatment device (6) includes a short-circuit annealing module (61), a cooling water tank (62), a plurality of drive rollers (63) and a tension roller assembly (64), wherein the drive rollers (63) and the tension roller assembly (64) cooperate to transport the busbar from the short-circuit annealing module (61) to the cooling water tank (62).