A cutting tool for a photovoltaic backplane

Abstract

The present invention discloses a cutting tool for a photovoltaic backplane, which relates to the technical field of photovoltaic backplane cutting. Aiming at the problem that the perforated part of the existing backplane is completely cut off, the following scheme is proposed. It includes a bottom plate, a pressing mechanism, a mounting mechanism, and a pressing plate. The mounting mechanism is connected between the bottom plate and the pressing plate and is fixedly connected to one side of the bottom plate. The bottom plate and the pressing plate are movable through the pressing mechanism. A cutting tool body is detachably installed on one side of the mounting mechanism. A second cutting tool body is fixedly connected to the inner side wall of the first cutting tool body. The cutting tool body is a thin-walled ring body with an opening on one side. A cutting opening matching the cutting tool body is formed on the pressing plate. The structure of the present invention is simple. Through the cutting tool body with an opening on one side, the backplane at the punching part does not need to be completely cut off, preventing glue overflow, and is convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic backplane cutting, and particularly to a cutting tool for photovoltaic backplanes. Background Art

[0002] A solar panel is an assembly of multiple solar cells, which is the core part and the most important part of a solar power generation system. A solar panel mainly consists of tempered glass, EVA, solar cells, a backplane, aluminum alloy, a junction box, and silicone. Multiple layers are connected through punching and using busbars.

[0003] In a Chinese utility model patent with the publication number CN215282268U, a photovoltaic backplane punching tool is disclosed, which includes: an upper tool holder having a cutter shaft through hole opened in the vertical direction; a piston rod connecting plate located above the upper tool holder, having a cutter shaft mounting hole and a piston rod mounting hole, and the cutter shaft mounting hole is coaxially arranged with the cutter shaft through hole; and a cutting tool including a cutter shaft and a tool bit, the cutter shaft passes through the cutter shaft through hole and is fixedly installed in the cutter shaft mounting hole, and the piston rod connecting plate and the cutting tool can slide relative to the upper tool holder.

[0004] In a Chinese invention patent with the publication number CN112315658A, a hydrocolloid dressing and its preparation method are disclosed. The hydrocolloid dressing includes a first hydrocolloid layer, a second hydrocolloid layer combined on the upper side of the first hydrocolloid layer, and a backing layer combined on the upper side of the second hydrocolloid layer. A liquid leakage anti-backflow water locking mechanism is distributed on the upper side of the first hydrocolloid layer, and a hydrocolloid bonding enhancing mechanism is on the lower side of the second hydrocolloid layer. Steps: Prepare the first hydrocolloid layer; prepare the second hydrocolloid layer, and form a hydrocolloid bonding enhancing mechanism on the lower side of the second hydrocolloid layer. Finally, stack the lower side of the second hydrocolloid layer on the upper side of the first hydrocolloid layer, so that the liquid leakage anti-backflow water locking mechanism and the hydrocolloid bonding enhancing mechanism are combined with each other.

[0005] In view of the related technologies mentioned above, the inventor believes that the following defects exist: Although a kind of PV backplane punching tool with the publication number CN215282268U can punch the backplane, the punched part of the backplane is directly cut off, leaving a hole. Although the subsequent busbars can pass through, generally the busbars are adhered to one side of the backplane with glue, and the hole is slightly larger than the busbar. Due to the completely cut hole, it is easy for the glue on one side of the backplane to overflow through the hole, causing glue to accumulate on each layer of the solar panel, reducing the quality of the solar panel. Although a kind of hydrocolloid dressing and its preparation method with the publication number CN112315658A, in order to prevent glue overflow, a hydrocolloid bonding enhancement mechanism is formed on the side of the second hydrocolloid layer II facing downwards, and finally the side of the second hydrocolloid layer II facing downwards is stacked on the side of the first hydrocolloid layer I facing upwards, so that the exudate anti-backflow water-locking mechanism and the hydrocolloid bonding enhancement mechanism are combined with each other, solving the problem of preventing glue overflow. However, if the busbar passes through the hole cut by the glue, the second hydrocolloid layer II cannot completely block the hole, and there will still be a small amount of glue flowing out through the gap, affecting the subsequent manufacture of the PV panel. To solve the above technical problems, a cutting tool for PV backplane is needed now. Summary of the Invention

[0006] A cutting tool for PV backplane proposed by the present invention solves the problem of completely cutting off the punched part of the backplane.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A cutting tool for PV backplane includes a bottom plate, a pressing mechanism, an installation mechanism, and a pressing plate. The installation mechanism is connected between the bottom plate and the pressing plate and is fixedly connected to one side of the bottom plate. The bottom plate and the pressing plate are movable through the pressing mechanism. A first cutting tool body is detachably installed on one side of the installation mechanism. A second cutting tool body is fixedly connected to the inner side wall of the first cutting tool body. The first cutting tool body is a thin-walled ring body with an opening on one side, and the second cutting tool body is a closed thin-walled ring body. A cutting opening matching the first cutting tool body is provided on the pressing plate.

[0009] Preferably, the pressing mechanism includes a telescopic rod and a pressing spring. The two ends of the telescopic rod are respectively connected to the bottom plate and the pressing plate, and the pressing spring is sleeved outside the telescopic rod.

[0010] Preferably, the installation mechanism includes an installation plate, an installation column, a first bolt, and a second bolt. The installation plate is fixed to one side of the bottom plate through the second bolt. The installation column is integrally formed with the installation plate. The first cutting tool body is fixed to the end of the installation column away from the installation plate through the first bolt.

[0011] Preferably, a plurality of pressing mechanisms are provided and arranged on both sides of the bottom plate and the pressing plate.

[0012] Preferably, a plurality of mounting posts are provided, and slots for movably inserting the cutting tool body are formed at one ends of the plurality of mounting posts.

[0013] Preferably, a plurality of mounting holes are formed on both the bottom plate and the pressing plate, and the pressing plate contacts and presses the photovoltaic backplane during operation.

[0014] Preferably, the shapes of the first cutting tool body and the second cutting tool body are square or circular.

[0015] Advantages of the present invention:

[0016] 1. By setting the first cutting tool body as a thin-walled annular body with an opening on one side, when the backplane is cut, the backplane at the punching part does not need to be completely cut off. Subsequently, by passing the bus bar through the cut incision, the remaining uncut backplane can block the hole, preventing the glue on one side of the backplane from flowing out through the hole. And since the backplane at the part where the hole needs to be cut is not completely cut off, there is no need to process the backplane subsequently, reducing the production cost of the photovoltaic panel. It can also prevent the cut-backplane from adhering to other layers of the photovoltaic panel, eliminating the need for subsequent processing, improving the processing efficiency. And by arranging the second cutting tool body on the inner side wall of the first cutting tool body, a perforation can be cut again at the edge of the uncut backplane, facilitating the passing of the bus bar. And the uncut backplane can tightly block the incision, preventing the glue from overflowing through the gap between the bus bar and the contact part of the backplane, improving the sealing effect. And the bus bar can be fixed through the perforation at the contact part between the bus bar and the backplane, preventing the bus bar from loosening during the overall installation of the subsequent photovoltaic panel, and improving the fixing effect of the bus bar.

[0017] 2. Through the compression spring, the telescopic rod and the pressing plate, when cutting the backplane, the pressing plate first contacts the backplane, and then as the bottom plate moves downward, the compression spring between the bottom plate and the pressing plate is compressed. Then, the elastic force of the compression spring can be used to press the backplane at the cutting part, preventing the backplane from moving during the cutting process of the cutting tool body, making the cut incision smoother and facilitating the improvement of the cutting quality. By providing a cut incision on the pressing plate, on the one hand, it is convenient for the cutting tool body to pass through and perform cutting. On the other hand, it can make the contact range between the backplane and the cutting tool body smaller, preventing the backplane from shifting and affecting the cutting effect. Description of the Drawings

[0018] Figure 1 is an overall schematic diagram of a first perspective of a cutting tool for a photovoltaic backplane proposed by the present invention;

[0019] Figure 2 This is an overall second - perspective schematic diagram of a cutting tool for a photovoltaic backplane proposed by the present invention;

[0020] Figure 3 This is an overall third - perspective schematic diagram of a cutting tool for a photovoltaic backplane proposed by the present invention;

[0021] Figure 4 This is an overall first - partial schematic diagram of a cutting tool for a photovoltaic backplane without a pressure plate proposed by the present invention;

[0022] Figure 5 This is an overall second - partial schematic diagram of a cutting tool for a photovoltaic backplane without a pressure plate proposed by the present invention;

[0023] Figure 6 This is a front - view schematic diagram of a cutting tool for a photovoltaic backplane proposed by the present invention;

[0024] Figure 7 This is a top - view schematic diagram of a cutting tool for a photovoltaic backplane proposed by the present invention;

[0025] Figure 8 This is a schematic diagram after the cutting tool for a photovoltaic backplane proposed by the present invention cuts the backplane.

[0026] Reference numerals in the figure: 1, bottom plate; 2, pressing mechanism; 201, pressing spring; 202, telescopic rod; 3, mounting mechanism; 301, mounting plate; 302, mounting column; 303, first bolt; 304, second bolt; 305, first cutting - tool body; 306, second cutting - tool body; 4, pressure plate; 5, cutting opening; 6, mounting hole; 7, backplane body; 8, jack; 9, cover plate; 10, through - hole. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Embodiment 1:

[0029] Refer to Figure 1-8, A cutting tool for a photovoltaic backplane, having a bottom plate 1 and a pressing plate 4, which are movably arranged between the bottom plate 1 and the pressing plate 4. There are a telescopic rod 202 and a pressing spring 201. The bottom plate 1 and the pressing plate 4 are connected through the pressing spring 201 and the telescopic rod 202. When cutting the backplane, the pressing plate 4 first contacts the backplane, and then the bottom plate moves downward, causing the pressing spring 201 between the bottom plate 1 and the pressing plate 4 to be compressed. The elastic force of the pressing spring 201 can be used to press the backplane at the cutting part, preventing the backplane from moving during the cutting process of the subsequent cutting tool body 305, making the cut opening smoother and facilitating the improvement of the cutting quality. By providing a cut opening 5 on the pressing plate 4, on the one hand, it is convenient for the cutting tool body 305 to pass through and perform cutting. On the other hand, it can reduce the contact range between the backplane and the cutting tool body 305, preventing the backplane from shifting and affecting the cutting effect. The two ends of the telescopic rod 202 are respectively connected to the bottom plate 1 and the pressing plate 4, and the pressing spring 201 is sleeved outside the telescopic rod 202. One side of the mounting mechanism 3 is detachably mounted with a first cutting tool body 305. The inner side wall of the first cutting tool body 305 is fixedly connected with a second cutting tool body 306. The second cutting tool body 306 is a closed thin-walled ring body, and the first cutting tool body 305 is a thin-walled ring body with an opening on one side. A cut opening 5 matching the cutting tool body 305 is provided on the pressing plate 4. The cutting tool body 305 is set as a thin-walled ring body with an opening on one side. After cutting, a cover plate 9 is turned outwards on the backplane body 7. One side of the cover plate 9 is cut with a through hole 10 by the second cutting tool body 306. The through hole 10 is convenient for the bus bar to pass through. By passing through the through hole 10, it can be ensured that when the bus bar passes through the backplane body 7, the cover plate 9 that is not completely cut off seals the jack 8, preventing glue overflow. And through the through hole 10, the cover plate 9 can be closely attached around the bus bar, improving the sealing effect. Also, through the tight fit between the through hole 10 and the bus bar, the bus bar can be fixed on the backplane body 7, preventing the bus bar from loosening inside the photovoltaic panel during subsequent installation of the photovoltaic panel. When the backplane is cut, the backplane at the punching part does not need to be completely cut off. Subsequently, by passing the bus bar through the cut opening, the remaining uncut backplane can also seal the hole, preventing the glue on one side of the backplane from flowing out through the hole. And since the backplane of the part that needs to be cut with holes is not completely cut off, there is no need to perform subsequent reprocessing on the backplane, reducing the production cost of the photovoltaic panel. It can also prevent the cut-backplane from adhering to other layers of the photovoltaic panel, eliminating the need for subsequent processing, improving the processing efficiency, preventing the backplane slices from flying around and causing equipment damage. This solution also includes a mounting plate 301, a mounting post 302, a first bolt 303, and a second bolt 304. The mounting plate 301 is fixed on one side of the bottom plate 1 through the second bolt 304, and the mounting post 302 is integrally formed with the mounting plate 301.The first cutting tool body 305 is fixed to one end of the mounting post 302 away from the mounting plate 301 by the first bolt 303.,

[0030] A plurality of pressing springs 201 and telescopic rods 202 are provided and arranged on both sides of the bottom plate 1 and the pressing plate 4, which can make the pressure more uniform and prevent uneven pressure transmitted to both sides of the pressing plate 4, causing damage to the backplane; a plurality of mounting posts 302 are provided, and one end of each of the plurality of mounting posts 302 is provided with a slot for movably inserting the first cutting tool body 305, which can facilitate the installation and disassembly of the cutting tool body 305 on the mounting post 302 and facilitate the replacement of the cutting tool body 305. A plurality of mounting holes 6 are provided on both the bottom plate 1 and the pressing plate 4. When the pressing plate 4 is in operation, it contacts and presses the photovoltaic backplane, which can keep the backplane in a pressed state during the cutting process, preventing the first cutting tool body 305 from causing the backplane to shift when cutting the backplane. The shape of the first cutting tool body 305 can be square, circular or other shapes, and the shape of the first cutting tool body 305 can be flexibly adjusted according to actual production.

[0031] Working principle: Mount the bottom plate 1 of the present invention on a cutting machine. The backplane body 7 rolls under the cutting machine, and then the cutting machine drives the bottom plate 1 to move downward, driving the pressing plate 4 below the bottom plate 1 to move downward, so that the pressing plate 4 presses the backplane body 7. Then continue to drive the bottom plate 1 to move downward, reducing the distance between the bottom plate 1 and the pressing plate 4, and causing the first cutting tool body 305 on one side of the bottom plate 1 to pass through the cutting opening 5 on the pressing plate 4, so that the first cutting tool body 305 and the second cutting tool body 306 cut the backplane body 7. The first cutting tool body 305 is arranged as a thin-walled ring body with an opening on one side, which can make it unnecessary to completely cut off the backplane at the punching part when cutting the backplane. Subsequently, by passing the bus bar through the cut, the remaining backplane that has not been completely cut off can also block the hole, preventing the glue on one side of the backplane from flowing out through the hole. The second cutting tool body 306 can cut a through hole 10 on the backplane that has not been completely cut off again. The through hole 10 facilitates the passing of the bus bar, preventing the backplane from warping during the blocking process and improving the sealing effect. By closely fitting the through hole 10 and the bus bar, the bus bar is fixed, preventing the bus bar from loosening when installing the photovoltaic panel and affecting the normal operation of the photovoltaic panel. And because the backplane of the part that needs to be cut with holes is not completely cut off, there is no need to perform subsequent reprocessing on the backplane, reducing the production cost of the photovoltaic panel, and preventing the cut-off backplane from adhering to other layers of the photovoltaic panel, eliminating the need for subsequent processing and improving the processing efficiency.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0034] As mentioned above, the above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. A cutting tool for a photovoltaic backplane, characterized in that, It includes a bottom plate (1), a pressing mechanism (2), a mounting mechanism (3), and a pressing plate (4). The mounting mechanism (3) is connected between the bottom plate (1) and the pressing plate (4) and is fixedly connected to one side of the bottom plate (1). The bottom plate (1) and the pressing plate (4) are movable through the pressing mechanism (2). A first cutting tool body (305) is detachably mounted on one side of the mounting mechanism (3). A second cutting tool body (306) is fixedly connected to the inner side wall of the first cutting tool body (305). The first cutting tool body (305) is a thin-walled annular body with an opening on one side. The second cutting tool body (306) is a closed thin-walled annular body. A cutting opening (5) matching the first cutting tool body (305) is formed on the pressing plate (4).

2. The cutting tool for a photovoltaic backplane according to claim 1, wherein The pressing mechanism (2) includes a telescopic rod (202) and a pressing spring (201). The two ends of the telescopic rod (202) are respectively connected to the bottom plate (1) and the pressing plate (4). The pressing spring (201) is sleeved on the outer side of the telescopic rod (202).

3. A cutting tool for a photovoltaic backplane according to claim 2, characterized in that, The mounting mechanism (3) includes a mounting plate (301), a mounting column (302), a first bolt (303), and a second bolt (304). The mounting plate (301) is fixed on one side of the bottom plate (1) through the second bolt (304). The mounting column (302) is integrally formed with the mounting plate (301). The first cutting tool body (305) is fixed to the end of the mounting column (302) far from the mounting plate (301) through the first bolt (303).

4. A cutting tool for a photovoltaic backplane according to claim 1, characterized in that, A plurality of the pressing mechanisms (2) are provided and are arranged on both sides of the bottom plate (1) and the pressing plate (4).

5. The cutting tool for a photovoltaic backplane according to claim 3, characterized in that, A plurality of the mounting columns (302) are provided. Slots for movably inserting the first cutting tool body (305) are formed at one ends of the plurality of mounting columns (302).

6. A cutting tool for a photovoltaic backplane according to claim 1, characterized in that, A plurality of mounting holes (6) are formed on both the bottom plate (1) and the pressing plate (4). The pressing plate (4) contacts and presses the photovoltaic backplane during operation.

7. A cutting tool for a photovoltaic backplane according to any one of claims 1-6, characterized in that, The cutting openings of the first cutting tool body (305) and the second cutting tool body (306) are square or circular in shape.

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