Edge sealing hot melting device, equipment and method

Abstract

The invention discloses an edge sealing and hot melting device, equipment and method. The edge sealing and hot melting device comprises a supporting frame, a feeding unit, a bending and shaping mechanism, a three-face pressing mechanism and a corner hot melting mechanism, wherein the feeding unit, the bending and shaping mechanism, the three-face pressing mechanism and the corner hot melting mechanism are sequentially arranged on the supporting frame. The edge sealing and hot melting equipment comprises a plurality of edge sealing and hot melting devices; the edge-sealing and hot-melting method comprises the following steps of: adhering an insulating adhesive tape to the side edge of the photovoltaic module, softening the adhesive tape by heating, gradually bending the adhesive tape from a vertical state into a C shape, tightly pressing and coating the adhesive tape on the upper surface, the side surface and the lower surface of the photovoltaic module, and performing hot-melting connection on the tails of the adjacent adhesive tapes through a heated hot-melting space. The multi-stage progressive bending and shaping, sectional uniform heating and corner hot melting technology is adopted, the problems that a thick insulating tape is difficult to be tightly bent and formed and the connection sealing performance of the tail of the tape at the corner is poor are solved, and high-quality and high-sealing-performance C-shaped full-wrapping edge sealing of the edge of the photovoltaic module is achieved.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic module production technology, and in particular relates to an edge sealing hot-melt welding device, equipment and method. Background Technology

[0002] In the production of solar photovoltaic (PV) modules, edge insulation is a crucial process. The purpose is to achieve multiple layers of protection and improved efficiency by applying insulating tape to the edges of the PV modules. The edge sealing process requires forming a C-shaped wrapping structure around the PV module's edges. This means the insulating tape must be tightly adhered to the sides, top surface, and bottom surface edges of the PV module simultaneously. This necessitates precisely bending and maintaining the insulating tape in a C-shape to achieve comprehensive C-shaped edge sealing. To ensure the insulation and structural stability of the edge sealing, thicker insulating tape is required, such as tape with a thickness of 0.36~0.5mm or even thicker. Compared to conventional edge sealing tape, this thickness significantly increases the difficulty of C-shaped bending and shaping. If the bending and shaping are not done properly, the ends of the tape will tend to open when it is subsequently pasted onto the side of the photovoltaic module, meaning the C-shaped opening will become larger. This can easily lead to poor adhesion between the insulating tape and the upper and lower edges of the photovoltaic module, resulting in defects such as gaps and air bubbles. This prevents the formation of a reliable C-shaped wrapping edge sealing, thereby weakening the insulation and sealing protection effect and causing safety hazards such as short circuits and moisture intrusion in the photovoltaic module. Furthermore, in actual application of insulating tape, four sealing devices are installed at the four corners of the photovoltaic module. These four devices sequentially attach the insulating tape to the four sides of the photovoltaic module. The four strips of insulating tape are applied independently, with the ends of the long and short strips not connected. To ensure a tight seal between the tapes on all four sides of the photovoltaic module, the ends of adjacent strips at each corner need to be connected. This ensures that the long and short strips are joined together and tightly adhered to the corner. However, thick tape increases the difficulty of connecting the ends, potentially leading to weak connections. Therefore, there is an urgent need to design a sealing heat-sealing device that can tightly adhere thick insulating tape to the sides of the photovoltaic module and connect the ends of two thick strips at the corner.

[0003] In the prior art, the Chinese invention patent authorization announcement number CN118701849B discloses a photovoltaic module glass side waterproof tape sealing mechanism and method. This solution can stick the sealing tape on the side, upper surface edge and lower surface edge of the photovoltaic module. However, this solution still has the following problems: (1) The solution does not specify the suitable sealing tape thickness. Its design intention is more inclined to conventional thin sealing tape. It does not consider the C-shaped bending characteristics and bonding requirements of thick insulating tape, and cannot adapt to the sealing requirements of thick insulating tape; (2) The corner bending and pasting module set in this solution only pastes the end of the insulating tape to the adjacent edge of the photovoltaic module. The long side insulating tape and the short side insulating tape in this solution are not firmly connected. They only cover each other at their respective tails and are not actually connected together. In the area where the two tails are covered, there will still be safety hazards such as water vapor intrusion. There are problems of poor insulation isolation and poor sealing protection effect. In summary, the above-mentioned shortcomings mean that the proposed solution cannot meet the requirements for tight bonding of thick insulating tape and connection of the two ends of the insulating tape at corners. Therefore, it is necessary to provide a sealing edge heat fusion welding device, equipment, and method to solve the above technical problems. Summary of the Invention

[0004] The main objective of this invention is to provide an edge sealing heat fusion device. By adopting multi-stage progressive bending and shaping, segmented uniform heating, and corner heat fusion technology, it solves the problems of thick insulating tape being difficult to bend tightly and poor sealing of the tape tail at corners, thus achieving high-quality, high-sealing C-shaped full-wrap edge sealing of photovoltaic modules.

[0005] The present invention achieves the above objectives through the following technical solution: an edge sealing heat fusion welding device, which includes a support frame and a feeding unit, a bending and shaping mechanism, a three-sided pressing mechanism and a corner heat fusion welding mechanism arranged sequentially on the support frame; The bending and shaping mechanism includes a mounting frame and a shaping unit and a hot air blowing unit disposed on the mounting frame. The hot air blowing unit has a first air outlet on the side facing the shaping unit. The three-sided pressing mechanism includes a support plate and a side pressing member, an upper pressing member and a lower pressing member disposed on the support plate. A first heating member is disposed near the upper pressing member and a second heating member is disposed near the lower pressing member. The corner heat welding mechanism includes a welding seat and a third heating element disposed on the welding seat. A heat welding space matching the corner of the material is formed on one side of the welding seat, and the heat welding space is opened on the side facing the material.

[0006] Further, the shaping unit includes a number of shaping components with different inclination angles, and the number of the shaping components are arranged on the mounting bracket in the order of decreasing inclination angles.

[0007] Further, the hot air blowing unit includes an air storage box, the top of the air storage box is connected with a hot air pipe, one side of the lower end of the air storage box is provided with the first air outlet, and a gas passage communicating the hot air pipe with the first air outlet is arranged inside the air storage box.

[0008] Further, the side pressing member is vertically arranged on one side of the support plate, the upper pressing member is located above the side pressing member, the upper pressing member is horizontally arranged on the first mounting block, the first heating member is arranged on the first mounting block, the lower pressing member is located below the side pressing member, the lower pressing member is horizontally arranged on the second mounting block, and the second heating member is arranged on the second mounting block.

[0009] Further, both the first mounting block and the second mounting block are elastically floating up and down on the support plate.

[0010] Further, the upper pressing member and the lower pressing member are arranged corresponding to each other up and down, a feeding gap is formed between the upper pressing member and the lower pressing member, and the side pressing member is located on one side of the feeding gap.

[0011] Further, a profiling groove extending vertically is formed on one side of the welding seat, the inner wall of the profiling groove forms a first limiting surface and a second limiting surface with an included angle, and the first limiting surface and the second limiting surface are respectively adapted to and fit with the adjacent two side surfaces at the corner of the material.

[0012] Further, a first limiting block and a second limiting block are arranged opposite to each other up and down in the profiling groove, and the first limiting surface, the second limiting surface, the lower surface of the first limiting block and the upper surface of the second limiting block together form the hot welding space.

[0013] Another object of the present invention is to provide an edge sealing hot melting welding device, which includes the above-mentioned edge sealing hot melting welding device, and a number of the edge sealing hot melting welding devices are provided.

[0014] Another object of the present invention is to provide an edge sealing hot melting welding method, which includes the following steps: Step S1, a number of the edge sealing hot melting welding devices are respectively located at the corners of the photovoltaic module; Step S2, a number of the edge sealing hot melting welding devices simultaneously move close to the side edge of the photovoltaic module and simultaneously move along the side edge of the photovoltaic module. Meanwhile, the feeding unit releases the insulating tape and pastes the insulating tape on the side edge of the photovoltaic module. At this time, the insulating tape is in a vertical "|" state, and the upper and lower sides of the insulating tape extend out of the upper and lower surfaces of the photovoltaic module; Step S3: The bending and shaping mechanism moves close to the side of the photovoltaic module. The hot air blowing unit blows hot air to the side of the insulating tape to soften the insulating tape by heating. At the same time, the shaping unit transitions the insulating tape from the vertical "|" state to the ">" state until it is formed into the "]" state, and the insulating tape adheres to the side, upper surface, and lower surface of the photovoltaic module simultaneously; Step S4: The three-sided pressing mechanism moves close to the side of the photovoltaic module. The first heating element heats the upper pressing member, and the second heating element heats the lower pressing member. The upper pressing member and the lower pressing member further soften the insulating tape by heating. At the same time, the side pressing member, the upper pressing member, and the lower pressing member work together to press the insulating tape tightly on the side, upper surface, and lower surface of the edge of the photovoltaic module, forming a C-shaped covering; Step S5: After the insulating tape C-shaped covers the photovoltaic module for a set length, the insulating tape is cut; Step S6: The corner hot melt welding mechanism moves close to the corner of the photovoltaic module. The third heating element heats the hot welding space, and the tails of the long-side insulating tape and the short-side insulating tape are hot melt connected and tightly adhered to the corner of the photovoltaic module.

[0015] Compared with the prior art, the beneficial effects of a sealing edge hot melt welding device, equipment, and method of the present invention are as follows: 1. High degree of automation and high sealing edge efficiency: Through the collaborative work of the feeding unit, bending and shaping mechanism, three-sided pressing mechanism, corner hot melt welding mechanism, and transfer driving member, a full-process automated operation from feeding, pasting, bending, pressing to corner hot melt welding is achieved; 2. Adapt to thick insulating tape and achieve high-quality C-shaped sealing edge: Aiming at the problem that it is difficult to bend thick insulating tape, in this solution, the multi-stage shaping components (such as the oblique wheel surface, transition wheel surface, and transverse wheel surface) of the bending and shaping mechanism cooperate with the precise segmented heating of the hot air blowing unit, so that the tape is gradually and gently softened by heating and bent into shape during the movement, effectively solving the problem that the thick tape cannot be bent in place due to high rigidity, ensuring that the tape can accurately form a C-shaped wrapping structure and tightly adhere to the side, upper surface edge, and lower surface edge of the photovoltaic module; 3. The协同作用 of heating and pressing ensures tight adhesion: The three-sided pressing mechanism not only physically presses the three surfaces of the insulating tape through the side pressing member, upper pressing member, and lower pressing member, but also heats the upper pressing member and the lower pressing member through the first heating element and the second heating element. During the pressing process, heat is transferred to the insulating tape to further soften and shape it, and the elastic floating structure provides elastic pressure, achieving efficient and tight pressing of the thick insulating tape, effectively solving the problem that the C-shaped opening of the thick tape is easy to open, further consolidating the forming quality of the C-shaped wrapping structure, avoiding defects such as fitting gaps and bubbles, and ensuring insulation and structural stability; 4. Achieving heat fusion connection of the tape tail at the corner, improving overall sealing performance: This solution is specially designed with a corner heat fusion welding mechanism. The corner heat fusion welding mechanism is designed with a heat welding space that matches the corner of the photovoltaic module, and uses a third heating element to heat the long side tape and the short side tape tail at the corner, so that they are reconnected as one unit after being heated and melted. This design eliminates the connection gap, significantly enhances the insulation and sealing protection effect at the corner of the photovoltaic module, and effectively prevents the risk of short circuit and moisture intrusion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the edge sealing heat fusion welding device according to an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the bending and shaping mechanism according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the main structure of the bending and shaping mechanism according to an embodiment of the present invention; Figure 4 This is a side view of the bending and shaping mechanism according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the hot air blowing unit according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the internal structure of the gas storage box according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the mounting bracket and shaping unit according to an embodiment of the present invention; Figure 8 This is a three-dimensional structural diagram of the three-sided pressing mechanism according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the three-sided pressing mechanism of the present invention after removing the pressing drive component and the preheating component; Figure 10 This is an embodiment of the present invention. Figure 9 Front view structural diagram; Figure 11 This is an embodiment of the present invention. Figure 9 A schematic diagram of the side view structure; Figure 12 This is a schematic diagram of the corner heat fusion welding mechanism according to an embodiment of the present invention; Figure 13 This is a schematic diagram of the mounting base according to an embodiment of the present invention; Figure 14 This is a schematic diagram of the corner hot-melt welding mechanism of the present invention after removing the hot-melt welding drive component, the third connecting plate, and the heating terminal. Figure 15 This is an embodiment of the present invention. Figure 14 A schematic diagram of the structure after removing the mounting base and the third heating element; The numbers in the diagram represent: Edge sealing heat fusion welding device-100; feeding unit-1, end pasting module-11, tail cutting module-12, guide support module-13, tape feeding and recycling module-14. Bending and shaping mechanism-2, mounting bracket-21, clearance notch-211, shaping unit-22, first shaping assembly-221, first support shaft-2211, first shaping wheel-2212, first elastic element-2213, inclined wheel surface-2214, second shaping assembly-222, second support shaft-2221, second shaping wheel-2222, second elastic element-2223, transverse wheel surface-2224 Third shaping component-223, third support shaft-2231, third shaping wheel-2232, third elastic element-2233, transition wheel surface-2234, hot air blowing unit-23, first air outlet-231, air storage box-232, box body-2321, extension-2322, hot air pipe-233, gas channel-234, clearance gap-24, shaping drive component-25, pre-compression component-26; Three-sided pressing mechanism-3, support plate-31, pressing drive component-311, third mounting block-312, fourth mounting block-313, mounting gap-314, first connecting plate-315, second connecting plate-316, preheating component-32, air blowing block-321, air inlet pipe-322, second air outlet-323, first mounting block-33, slider-331, slide rail-332, fourth elastic component-333, second mounting block-34, fifth elastic component-341, second mounting hole-342, side pressing component-35, upper pressing component-36, feeding gap-361, first heating component-37, lower pressing component-38; Corner heat fusion welding mechanism-4, mounting base-41, snap-fit ​​groove-411, third mounting hole-412, sliding space-414, third connecting plate-415, welding base-42, fourth mounting hole-421, snap-fit ​​protrusion-422, third heating element-43, heating terminal-431, contour groove-44, first limiting surface-441, second limiting surface-442, first limiting block-45, fifth mounting hole-451, oblong hole-452, second limiting block-46, heat fusion welding drive element-47, heat welding space-48. Detailed Implementation

[0017] Example 1: Please refer to Figures 1-15This embodiment is a sealing heat fusion welding device 100, which includes: a support frame 5 and a feeding unit 1, a bending and shaping mechanism 2, a three-sided pressing mechanism 3 and a corner heat fusion welding mechanism 4 arranged sequentially on the support frame 5; the bending and shaping mechanism 2 includes a mounting frame 21 and a shaping unit 22 and a hot air blowing unit 23 arranged on the mounting frame 21, the hot air blowing unit 23 is provided with at least one first air outlet 231 on the side facing the shaping unit 22; the three-sided pressing mechanism 3 includes a support plate 31 and a side pressing member 35, an upper pressing member 36, a lower pressing member 38, a first heating member 37 and a second heating member arranged on the support plate 31, the first heating member 37 heats the upper pressing member 36, and the second heating member heats the lower pressing member 38; the corner heat fusion welding mechanism 4 includes a welding seat 42 and a third heating member 43 arranged on the welding seat 42, a heat welding space 48 matching the corner of the photovoltaic module is formed on one side of the welding seat 42, and the heat welding space 48 is opened on the side facing the photovoltaic module.

[0018] The feeding unit 1 includes an end-sticking module 11, a tail-cutting module 12, an inlet support module 13, and a tape feeding and recycling module 14. The structure and working principle of the end-sticking module 11, the tail-cutting module 12, the inlet support module 13, and the tape feeding and recycling module 14 are existing technologies. The design in the existing technology can be adopted. Alternatively, the structure and working principle of the end-sticking module, the tail-cutting module, the inlet support module, and the tape feeding and recycling module disclosed in the Chinese Invention Patent Announcement No. CN118701849B, "A Mechanism and Method for Applying Waterproof Tape to the Side of Photovoltaic Module Glass", can be referred to. It will not be described in detail here.

[0019] The feeding unit 1 is used to paste the insulating tape on the side of the photovoltaic module. At this time, the insulating tape is in a vertical "|" state, and its upper and lower sides extend out of the upper and lower surfaces of the photovoltaic module. Since the insulating tape needs to be C-shaped wrapped around the side of the photovoltaic module, the insulating tape needs to be changed from the vertical "|" state to the "]" state. Therefore, the bending and shaping mechanism 2 is provided to change the insulating tape from the vertical "|" state to the "]" state. Specifically, the bending and shaping mechanism 2 includes a mounting frame 21, a shaping unit 22 and a hot air blowing unit 23 provided on the mounting frame 21. The shaping unit 22 includes a plurality of shaping components with different inclination angles. The plurality of shaping components are arranged on the mounting frame 21 in the order of decreasing inclination angles. The hot air blowing unit 23 is provided on the mounting frame 21 and is located on one side of the shaping unit 22. At least one first air outlet 231 is provided on the side of the hot air blowing unit 23 facing the shaping unit 22. The hot air blown out from the first air outlet 231 blows towards the material through the avoidance gap 24 between the plurality of shaping components, that is, there is an avoidance gap 24 between adjacent two shaping components. At least one first air outlet 231 is provided between adjacent two shaping components. The insulating tape is heated in a segmented and uniform manner in each shaping area during the multi-stage bending process, ensuring that the insulating tape can be fully softened when passing through each shaping component in turn for bending, thereby making the bending of the insulating tape smoother and more efficient, effectively improving the shaping accuracy and product yield.

[0020] The hot air blowing unit 23 includes an air storage box 232. A hot air pipe 233 is connected to the top of the air storage box 232. A first air outlet 231 is opened on one side of the lower end of the air storage box 232, and a gas passage 234 connecting the hot air pipe 233 and the first air outlet 231 is provided inside the air storage box 232. Specifically, the hot air enters the air storage box 232 from the hot air pipe 233, and then flows into the first air outlet 231 through the gas passage 234. The hot air at the first air outlet 231 blows towards the insulating tape on the side of the photovoltaic module through the avoidance gap 24 between adjacent two shaping components to heat the insulating tape. After the insulating tape is heated and softened, it is convenient to shape the insulating tape, which can reduce the bending difficulty of the insulating tape. Even when the thickness of the insulating tape is within 0.36 - 0.5 mm or the thickness of the insulating tape is thicker, after being heated and softened and then shaped by a plurality of shaping components in turn, the insulating tape can be accurately bent into a C shape, which is convenient for the insulating tape to be closely pasted on the side, the upper surface edge and the lower surface edge of the photovoltaic module subsequently, standardizing the formed C-shaped wrapping structure and avoiding defects such as fitting gaps and air bubbles during pasting. In this embodiment, a plurality of air storage boxes 232 are provided, and a hot air pipe 233 is connected to each air storage box 232. The gases in the plurality of air storage boxes 232 are respectively controlled for inflow and outflow, which can ensure that the hot air blown out between adjacent two shaping components is uniform, thereby ensuring the uniformity of the heating of the insulating tape and the consistency of the bending.

[0021] The air storage box 232 includes a box body 2321 located at the upper end of the mounting bracket 21 and a downwardly extending extension 2322. The extension 2322 is located on one side of the shaping component, and a first air outlet 231 is disposed on the extension 2322. In this embodiment, the extension 2322 is located between two adjacent shaping components, and the mounting bracket 21 has a clearance notch 211 to avoid the extension 2322. The downwardly extending extension 2322 extends between two adjacent shaping components, so that the first air outlet 231 is closely aligned with the area of ​​the insulating tape to be bent, achieving precise and concentrated heating of hot air and improving the heating and softening efficiency. In this embodiment, the melting point of the insulating tape is 170°C, so the temperature range of the hot air blown out from the first air outlet 231 is 110~130°C. This temperature range allows the insulating tape to be fully heated and softened, making it easier for the shaping component to shape the insulating tape into a standard C-shape. In other embodiments, the melting points of insulating tapes of different materials or thicknesses may vary, so the temperature of the hot air can be adjusted according to the actual situation.

[0022] The shaping assembly includes a first shaping assembly 221 located at the feed end, a second shaping assembly 222 located at the discharge end, and at least one third shaping assembly 223 located between the first shaping assembly 221 and the second shaping assembly 222. The first shaping assembly 221 includes a first support shaft 2211 vertically mounted on a mounting frame 21, a pair of first shaping wheels 2212 rotatably disposed on the outer periphery of the middle part of the first support shaft 2211 and symmetrically arranged vertically, and two first elastic members 2213 sleeved on the outer periphery of both ends of the first support shaft 2211. One end of each first elastic member 2213 abuts against the mounting frame 21, and the other end abuts against the first shaping wheel 2212. The pair of first shaping wheels 2212 are provided with inclined wheel surfaces 2214 at their close ends. The first shaping wheels 2212 are rotatably disposed on the outer periphery of the middle part of the first support shaft 2211 through bearings. The two inclined wheel surfaces 2214 simultaneously contact the insulating tape and perform shaping action on the insulating tape. A pre-compression component 26 is also provided on one side of the first shaping component 221. The pre-compression component 26 is prior art. The structure of the pre-compression component 26 can also refer to the structure of the pre-compression part in a photovoltaic module edge sealing device and edge sealing equipment disclosed in Chinese Patent Announcement No. CN220065716U, which will not be described in detail here. The second shaping assembly 222 includes a second support shaft 2221 vertically mounted on the mounting frame 21, a pair of second shaping wheels 2222 rotatably disposed on the outer periphery of the middle part of the second support shaft 2221 and symmetrically arranged vertically, and two second elastic members 2223 sleeved on the outer periphery of both ends of the second support shaft 2221. One end of each second elastic member 2223 abuts against the mounting frame 21, and the other end abuts against the second shaping wheel 2222. The pair of second shaping wheels 2222 are provided with transverse wheel surfaces 2224 at their close ends. The second shaping wheels 2222 are rotatably disposed on the outer periphery of the middle part of the second support shaft 2221 through bearings. The two transverse wheel surfaces 2224 simultaneously contact the insulating tape and perform shaping action on the insulating tape. The third shaping component 223 includes a third support shaft 2231 vertically mounted on the mounting frame 21, a pair of third shaping wheels 2232 rotatably disposed on the outer periphery of the middle part of the third support shaft 2231 and symmetrically arranged vertically, and two third elastic members 2233 sleeved on the outer periphery of both ends of the third support shaft 2231. One end of each third elastic member 2233 abuts against the mounting frame 21, and the other end abuts against the third shaping wheel 2232. The pair of third shaping wheels 2232 are provided with transition wheel surfaces 2234 at their close ends. The third shaping wheels 2232 are rotatably disposed on the outer periphery of the middle part of the third support shaft 2231 through bearings. The two transition wheel surfaces 2234 simultaneously contact the insulating tape and perform shaping action on the insulating tape.

[0023] The axes of symmetry of a pair of first shaping wheels 2212, a pair of second shaping wheels 2222, and at least a pair of third shaping wheels 2232 are all on the same straight line. This ensures stable conveying of the insulating tape along the central axis, preventing tape deviation and offset. It also ensures that the bending force exerted by each shaping wheel on the insulating tape is uniform and symmetrical, guaranteeing neat bending and high dimensional accuracy of the insulating tape. Furthermore, it facilitates overall structural assembly and calibration. The inclination angles of a pair of inclined wheel surfaces 2214, at least a pair of transition wheel surfaces 2234, and a pair of transverse wheel surfaces 2224 decrease sequentially, resulting in a gradual and smooth bending of the insulating tape. This progressive and gentle bending avoids stress concentration, wrinkles, or tears caused by sudden, one-time bending, effectively protecting the structural integrity and insulation performance of the insulating tape, and improving bending accuracy and product yield. The first elastic element 2213, the second elastic element 2223, and the third elastic element 2233 are springs or other elastic structures. By setting elastic connection structures on the first shaping wheel 2212, the second shaping wheel 2222, and the third shaping wheel 2232, the shaping mechanism can adapt to photovoltaic modules of different thicknesses to be bonded.

[0024] Multiple third shaping components 223 can be provided, with multiple third shaping wheels 2232 arranged sequentially between the first shaping wheel 2212 and the second shaping wheel 2222. The inclination angle of the transition wheel surface 2234 on the multiple third shaping wheels 2232 decreases sequentially along the direction from the first shaping wheel 2212 to the second shaping wheel 2222, thereby gradually and smoothly bending the insulating tape. In this embodiment, two third shaping components 223 are provided, that is, a total of four shaping components are provided. A first air outlet 231 is provided between two adjacent shaping components. A total of three air storage boxes 232 are provided. The top of each air storage box 232 is connected to a hot air pipe 233, and a first air outlet 231 is opened on one side of the lower end of each air storage box 232 to ensure the uniformity of air intake and exhaust. In other embodiments, the number of third shaping components 223, the number of air storage boxes 232, the number of hot air pipes 233, the number of gas channels 234, and the number of first air outlets 231 can be set according to actual conditions and are not limited here.

[0025] The bending and shaping mechanism 2 further includes a shaping driving member 25. The mounting bracket 21 is driven by the shaping driving member 25 to approach or move away from the edge of the photovoltaic module. In this embodiment, the shaping driving member 25 is a linear driving member, such as a cylinder, an electric cylinder or a servo motor. The working process of the bending and shaping mechanism 2 is as follows: After the feeding unit 1 adheres the insulating tape to the side of the photovoltaic module, the shaping driving member 25 drives the mounting bracket 21, the hot air blowing unit 23 and the shaping unit 22 to move simultaneously closer to the side of the photovoltaic module to be adhered. The shaping unit 22 moves towards the direction of the photovoltaic module to be adhered and the tape in the vertical "|" state that has just been adhered. The insulating tape is sequentially formed by passing through the pre-pressing component 26, the first shaping wheel 2212, the third shaping wheel 2232 and the second shaping wheel 2222. While the insulating tape is moving, the hot air at the first air outlet 231 blows towards the insulating tape on the side of the photovoltaic module from the avoidance gap 24 between two adjacent shaping components, heating the insulating tape. After the insulating tape is softened by heat, the insulating tape sequentially passes through the inclined wheel surface 2214, the transition wheel surface 2234 and the horizontal wheel surface 2224, so that the insulating tape transitions from the vertical "|" state to the ">" state until it is formed into the "]" state, and the insulating tape is simultaneously adhered to the upper and lower surfaces and the side surface of the photovoltaic module to be adhered, completing the bending and shaping action of the insulating tape.

[0026] When the bending and shaping mechanism 2 bends the insulating tape onto the side of the photovoltaic module, its main function is bending and shaping. At this time, the insulating tape is not tightly bonded to the photovoltaic module. Therefore, the three-sided pressing mechanism 3 is used to press the insulating tape onto the side, upper, and lower surfaces of the photovoltaic module edge, forming a C-shaped covering. The three-sided pressing mechanism 3 includes a support plate 31 and side pressing members 35, upper pressing members 36, and lower pressing members 38 disposed on the support plate 31. A first heating member 37 is disposed near the upper pressing member 36, and a second heating member is disposed near the lower pressing member 38. In this embodiment, the side pressing member 35, upper pressing member 36, and lower pressing member 38 are all rollers, and all are rotatably disposed via a support shaft. Specifically, the three-sided pressing mechanism 3 includes a support plate 31 and a side pressing member 35 vertically arranged on one side of the support plate 31. An upper pressing member 36 is arranged above the side pressing member 35, and a lower pressing member 38 is arranged below the side pressing member 35. The upper pressing member 36 is horizontally arranged on a first mounting block 33, and a first heating member 37 is arranged on the first mounting block 33. The lower pressing member 38 is horizontally arranged on a second mounting block 34, and a second heating member is arranged on the second mounting block 34. Specifically, the side pressing member 35 is vertically arranged, meaning its axis is vertical; the upper pressing member 36 is horizontally arranged, meaning its axis is horizontal; and the lower pressing member 38 is horizontally arranged, meaning its axis is horizontal. The outer peripheral surfaces of the side pressure member 35, upper pressure member 36, and lower pressure member 38 are in contact with the insulating tape. The upper pressure member 36 and lower pressure member 38 are arranged vertically correspondingly, forming a feeding gap 361 between them. The side pressure member 35 is located on one side of the feeding gap 361. The photovoltaic module with insulating tape wrapped around its edges enters the feeding gap 361. The side pressure member 35 presses the insulating tape tightly onto the side of the photovoltaic module, the upper pressure member 36 presses the insulating tape tightly onto the upper surface edge of the photovoltaic module, and the lower pressure member 38 presses the insulating tape tightly onto the lower surface edge of the photovoltaic module. The insulating tape forms a C-shaped wrapping structure at the edge of the photovoltaic module, achieving C-shaped edge sealing of the photovoltaic module. In other embodiments, the side pressure member 35, upper pressure member 36, and lower pressure member 38 are all pressure plates, which are fixedly arranged. The surface of the pressure plate is in contact with the surface of the insulating tape. Other structures are the same as or similar to the above structures and will not be described in detail here.

[0027] The first mounting block 33 has a first mounting hole for mounting the first heating element 37, and the second mounting block 34 has a second mounting hole 342 for mounting the second heating element. The first heating element 37 and the second heating element have the same or similar structures, and the first mounting hole and the second mounting hole 342 have the same or similar structures. In this embodiment, the first heating element 37 and the second heating element are heating rods. In other embodiments, the first heating element 37 and the second heating element can be adjusted according to actual conditions, and no limitation is made here.

[0028] In this embodiment, two first mounting blocks 33 are arranged side by side on the left and right, and two second mounting blocks 34 are arranged correspondingly on the left, right, and upper sides. Each first mounting block 33 is provided with two upper pressing members 36, and each second mounting block 34 is provided with two lower pressing members 38. A side pressing member 35 is provided and located at the center of the upper pressing members 36 and the lower pressing members 38. Each first mounting block 33 is provided with a first mounting hole for mounting a first heating member 37, and each second mounting block 34 is provided with a second mounting hole 342 for mounting a second heating member. Both the first mounting hole and the second mounting hole 342 extend vertically. Moreover, one first mounting hole is located between two upper pressing members 36 so that one first heating member 37 can heat two upper pressing members 36 simultaneously, and one second mounting hole 342 is located between two lower pressing members 38 so that one second heating member can heat two lower pressing members 38 simultaneously. In other embodiments, a first heating element 37 can be provided on the side of each upper pressing member 36, and a second heating element can be provided on the side of each lower pressing member 38 to improve heating efficiency. Furthermore, the first mounting hole and the second mounting hole 342 can extend laterally or in other directions. Therefore, the number, installation position, and installation direction of the first heating element 37 and the second heating element are not limited and can be set according to actual conditions. After the upper pressing member 36 and the lower pressing member 38 are heated, when they contact the insulating tape, they can transfer heat to the insulating tape, causing it to soften and facilitating shaping. Therefore, even if the thickness of the insulating tape is within 0.36~0.5mm, or even thicker, after being pressed by the upper pressing member 36 and the lower pressing member 38, the insulating tape can tightly adhere to the edge of the photovoltaic module, completing a full-range C-shaped wrapping edge sealing, thus improving the quality of the edge sealing. In this embodiment, the melting point of the insulating tape is 170°C, and the temperature range of the upper pressing member 36 and the lower pressing member 38 after heating is 110~150°C. This temperature range allows the insulating tape to be fully softened and shaped into a set form. In other embodiments, the melting points of insulating tapes of different materials or thicknesses may vary; therefore, the heating temperature can be adjusted according to the actual situation.

[0029] In other embodiments, each first mounting block 33 is provided with multiple upper pressing members 36, and each second mounting block 34 is provided with multiple lower pressing members 38. The number of side pressing members 35 can be set to one or more according to the actual situation. The multiple number of upper pressing members 36, lower pressing members 38, and side pressing members 35 can realize multiple pressing of the edge of the photovoltaic module to ensure the tight adhesion of the insulating tape and improve the quality of the sealing. Moreover, multiple first heating members 37 are provided on the first mounting block 33 to heat the multiple upper pressing members 36, and multiple second heating members are provided on the second mounting block 34 to heat the lower pressing members 38. Therefore, the number of first mounting blocks 33, second mounting blocks 34, upper pressing members 36, lower pressing members 38, side pressing members 35, first heating members 37, and second heating members can be set according to the actual situation and are not limited here. Moreover, the use of multiple independent floating and heated upper pressure components 36 and lower pressure components 38 for pressing can adapt to the surface of the photovoltaic module, effectively remove air bubbles and achieve precise heating, thereby completely solving the problems of poor adhesion, bubbling and wrinkling that easily occur when thick insulating tape is bent in a C-shape.

[0030] In this embodiment, a third mounting block 312 and a fourth mounting block 313, positioned vertically opposite each other, are disposed on one side of the support plate 31. A mounting gap 314 for mounting a side pressure member 35 is provided between the third mounting block 312 and the fourth mounting block 313. The upper end of the side pressure member 35 is mounted on the third mounting block 312, and the lower end of the side pressure member 35 is mounted on the fourth mounting block 313. The first mounting block 33 and the second mounting block 34 are both elastically floating on the support plate 31. Specifically, the first mounting block 33 and the second mounting block 34 are slidably mounted on the support plate 31 by means of a slider 331 and a slide rail 332. The upper end of the first mounting block 33 is connected to a fourth elastic member 333, and the upper end of the fourth elastic member 333 is connected to the support plate 31. Specifically, the fourth elastic member 333 is connected to the support plate 31 via a first connecting plate 315. The lower end of the second mounting block 34 is connected to a fifth elastic element 341, and the lower end of the fifth elastic element 341 is connected to the support plate 31. Specifically, the fifth elastic element 341 is connected to the support plate 31 via a second connecting plate 316. The third mounting block 312 and the fourth mounting block 313 are located between the first mounting block 33 and the second mounting block 34. The lower end of the first mounting block 33 is located above the third mounting block 312, and the third mounting block 312 can also limit the lower position of the first mounting block 33. The upper end of the second mounting block 34 is located below the fourth mounting block 313, and the fourth mounting block 313 can also limit the upper position of the second mounting block 34. In this embodiment, the fourth elastic element 333 and the fifth elastic element 341 are springs. In other embodiments, they can be set according to actual conditions, and are not limited here.

[0031] The three-sided pressing mechanism 3 also includes a preheating component 32, which is located at the feed end. The preheating component 32 includes an air blowing block 321 and an air inlet pipe 322 connected to one end of the air blowing block 321. The other end of the air blowing block 321 extends to the middle of the upper pressing member 36 and the lower pressing member 38 and is provided with a second air outlet 323. The air blowing block 321 has a gas flow channel inside that communicates with the air inlet pipe 322 and the second air outlet 323. Before the insulating tape fully enters the feed gap 361, the preheating component 32 blows out hot air to preheat the insulating tape. Before the upper pressing member 36 and the lower pressing member 38 press the insulating tape, the insulating tape is preheated to facilitate the shaping of the insulating tape by the upper pressing member 36 and the lower pressing member 38. The three-sided clamping mechanism 3 also includes a clamping drive 311. The support plate 31 is driven by the clamping drive 311 to move closer to or away from the photovoltaic module. In this embodiment, the clamping drive 311 is a linear drive, such as a cylinder, an electric cylinder, or a servo motor.

[0032] The working process of the three-sided pressing mechanism 3 is as follows: After the bending and shaping mechanism 2 bends and pastes the insulating tape onto the side of the photovoltaic module, the photovoltaic module with the insulating tape wrapped around its edges is inserted into the feeding gap 361 from the end with the preheating component 32. Before the insulating tape is fully inserted into the feeding gap 361, hot air is blown out from the second air outlet 323 of the preheating component 32 to preheat the insulating tape. Subsequently, the side pressing component 35 presses the insulating tape tightly onto the side of the photovoltaic module, and the distance between the upper pressing component 36 and the lower pressing component 38 increases, that is, the first mounting block 33 moves upward and the second mounting block 34 moves downward. Correspondingly, the fourth elastic component 333 and the fifth elastic component 341 are compressed and stored. The fourth elastic element 333 and the fifth elastic element 341 extend, releasing elastic force to press the insulating tape tightly onto the surface of the photovoltaic module by the upper pressure element 36 and the lower pressure element 38. While the tape is being pressed elastically, the first heating element 37 heats the upper pressure element 36 and the second heating element heats the lower pressure element 38. After the upper pressure element 36 and the lower pressure element 38 are heated, they can transfer heat to the insulating tape when they come into contact with it. After the insulating tape softens due to the heat, it can be precisely bent into a C-shape after being pressed by the upper pressure element 36 and the lower pressure element 38, so that the insulating tape is tightly attached to the edge of the photovoltaic module, completing a full-range C-shaped wrapping edge sealing and improving the quality of the edge sealing. In this embodiment, for insulating tape with a thickness of 0.36~0.5mm, the heating temperature range is 110~150℃, the elastic pressure range is 50N~70N, and the moving speed of the three-sided pressing mechanism 3 is 400mm / s. These are currently the preferred matching parameters. The above parameters work together to ensure a tight fit of the insulating tape. In other embodiments, if other types or thicknesses of insulating tape are used, the above parameters can be adjusted according to the actual situation.

[0033] During the edge sealing process of photovoltaic modules, it is necessary to seal all four sides of the photovoltaic module. After sealing each of the four sides individually, in order to ensure the airtightness of the fit, the ends of two adjacent insulating tapes at the corners of the photovoltaic module need to be connected together. This ensures that the long tape and short tape are connected together and tightly adhered to the corners of the photovoltaic module. Therefore, a corner heat fusion welding mechanism 4 is provided to connect the ends of two adjacent insulating tapes at the corners of the photovoltaic module. Specifically, the corner heat fusion welding mechanism 4 includes a welding seat 42 and a welding device disposed on the welding seat 42. The third heating element 43 has a heat-welding space 48 on one side of the welding seat 42 that matches the corner of the photovoltaic module. The heat-welding space 48 is set with an opening on the side closer to the material. In actual use, the opening side of the heat-welding space 48 faces the photovoltaic module. The corner of the photovoltaic module is inserted into the heat-welding space 48 from the opening. The corner of the photovoltaic module is completely matched with the heat-welding space 48. The third heating element 43 heats the heat-welding space 48. The heat-welding space 48 heats the tail of the long side and the short side of the insulating tape at the same time, so that the tail of the long side and the short side of the insulating tape are heat-fused together.

[0034] A vertically extending contoured groove 44 is provided on one side of the welding base 42. The inner wall of the contoured groove 44 forms a first limiting surface 441 and a second limiting surface 442 at an angle. The first limiting surface 441 and the second limiting surface 442 are respectively adapted to fit and fit against the two adjacent sides of the corner of the photovoltaic module. The corner of the photovoltaic module is inserted into the contoured groove 44. After the third heating element 43 heats the welding base 42, it can heat the tail of the long side and the short side insulating tape, so that the tail of the long side and the short side insulating tape are thermally melted together. In this embodiment, the insulating tape is not only pasted on the adjacent two sides of the photovoltaic module corner, but also on the upper and lower surfaces of the photovoltaic module corner. Since the width of the insulating tape is greater than the thickness of the photovoltaic module, it needs to be pressed firmly against the upper and lower surfaces of the corner. Therefore, a first limiting block 45 and a second limiting block 46, positioned vertically opposite each other, are provided in the contour groove 44. The first limiting block 45 presses the insulating tape firmly against the upper surface of the photovoltaic module corner, and the second limiting block 46 presses the insulating tape firmly against the lower surface of the photovoltaic module corner. Thus, the first limiting surface 441, the second limiting surface 442, the lower surface of the first limiting block 45, and the upper surface of the second limiting block 46 together constitute the heat-sealing space 48. Whether the insulating tape is pasted on the adjacent two sides and the upper surface, or on the adjacent two sides and the lower surface, the aforementioned heat-sealing space 48 can be used in conjunction with the third heating element 43 to complete the heat-fusion action, making it applicable to various application scenarios. The welding base 42, the first limiting block 45 and the second limiting block 46 are all made of metal, preferably iron, copper and other metals with good thermal conductivity, which can quickly melt and heat-weld the insulating tape.

[0035] In other embodiments, if the insulating tape is directly pasted onto the adjacent two sides of the corner of the photovoltaic module, without pressing the insulating tape tightly onto the upper and / or lower surfaces of the corner, the heat-sealing space 48 can be directly formed by the first limiting surface 441 and the second limiting surface 442. That is, the corner of the photovoltaic module is inserted into the contour groove 44, and the first limiting surface 441 and the second limiting surface 442 are respectively adapted to fit and adhere to the adjacent two sides of the corner of the photovoltaic module. After the third heating element 43 heats the welding seat 42, it can heat the tails of the long and short insulating tapes, so that the tails of the long and short insulating tapes are heat-fused together, which improves versatility and flexibility and can be applied to more application scenarios.

[0036] The first limiting block 45 limits the upper surface of the photovoltaic module at the corner, and the second limiting block 46 limits the lower surface of the photovoltaic module at the corner. To improve the versatility of the mechanism and adapt to photovoltaic modules of different thicknesses, the first limiting block 45 and the second limiting block 46 are vertically movable. Both the first limiting block 45 and the second limiting block 46 are vertically adjustable on the welding seat 42. Each of the first limiting block 45 and the second limiting block 46 is provided with a fifth mounting hole 451. The upper and lower ends of the contour groove 44 are provided with vertically extending oblong holes 452. First fasteners (such as bolts, screws, or pins) are tightened in the fifth mounting holes 451 and oblong holes 452 to fix the first limiting block 45 and the second limiting block 46 on the welding seat 42. If it is necessary to adapt to photovoltaic modules of different thicknesses, the first fasteners are loosened and the distance between the first limiting block 45 and the second limiting block 46 is adjusted.

[0037] Several third heating elements 43 are provided and are located near the contour groove 44. The welding seat 42 is provided with several fourth mounting holes 421 corresponding to the third heating elements 43. In this embodiment, the third heating element 43 is a heating rod, and two third heating elements 43 are provided, with two corresponding fourth mounting holes 421. The two fourth mounting holes 421 extend vertically, meaning the two third heating elements 43 extend vertically. The two third heating elements 43 are respectively located near the first limiting surface 441 and the second limiting surface 442 to facilitate heating of the first limiting surface 441 and the second limiting surface 442, ensuring uniform heating. In other embodiments, the type, number, and mounting posture of the third heating elements 43 can be adjusted according to actual conditions and are not limited here.

[0038] In this embodiment, since the contour groove 44 matches the corner profile of the photovoltaic module, and the corner of the photovoltaic module is a right angle, the contour groove 44 has a V-shaped structure, and the first limiting surface 441 and the second limiting surface 442 are perpendicular to each other. In other embodiments, the photovoltaic module can be replaced with other materials, and insulating tape or other adhesive films can be thermally fused to the corner of the material. The angle of the corner can be other angles, such as 60° or 120°. Therefore, the included angle between the first limiting surface 441 and the second limiting surface 442 can be set according to the actual situation and is not limited here. Sharp edges at corners are prone to stress concentration. During long-term heating, repeated clamping, and mechanical movement, cracks, chipping, or local deformation are likely to occur. Therefore, the connection position between the first limiting surface 441 and the second limiting surface 442 is an arc transition. The arc transition can effectively disperse stress, improve the structural strength and service life of the welding seat 42, and also avoid scratching the surface of the photovoltaic module or the insulating tape at the corner when in contact with it.

[0039] A welding seat 42 is mounted on a mounting base 41, with the mounting base 41 and the contour groove 44 located on opposite sides. The welding seat 42 has a locking protrusion 422 on the side away from the contour groove 44. The mounting base 41 has a locking groove 411 that mates with the locking protrusion 422. Both the locking protrusion 422 and the locking groove 411 have several third mounting holes 412. Second fasteners are inserted into the third mounting holes 412 to install the welding seat 42 onto the mounting base 41. To improve the versatility of the mechanism and adapt to photovoltaic modules of different heights, the welding seat 42 is vertically adjustable on the mounting base 41. Specifically, the length of the locking groove 411 is greater than the length of the locking protrusion 422 to create a sliding space 414 for the locking protrusion 422 to slide vertically within the locking groove 411, thereby allowing adjustment of the vertical position of the welding seat 42 on the mounting base 41. After the vertical position of the welding base 42 is adjusted, the second fastener is inserted into the third mounting hole 412 to install the welding base 42 and the mounting base 41.

[0040] The third heating element 43 is connected to the heating terminal 431 to achieve heating of the third heating element 43. The heating terminal 431 is located at the upper end of the mounting base 41, and the upper end of the mounting base 41 is provided with third connecting plates 415 for mounting the heating terminal 431 on both sides. In this embodiment, the melting point of the insulating tape is 170°C. Therefore, the temperature range after the third heating element 43 heats the welding seat 42, the first limiting block 45, and the second limiting block 46 is 240~280°C. After the welding seat 42, the first limiting block 45, and the second limiting block 46 come into contact with the insulating tape, this temperature range can fully heat melt the tails of the long and short sides of the insulating tape, and then reconnect them together in the conformal heat-welding space 48 to achieve the heat-welding action. Preferably, the temperature after the third heating element 43 heats the welding seat 42, the first limiting block 45, and the second limiting block 46 is 260°C. In other embodiments, the melting points of insulating tapes of different materials or other thicknesses may vary, so the heating temperature can be adjusted according to the actual situation.

[0041] The corner hot-melt welding mechanism 4 also includes a hot-melt welding drive component 47. The mounting base 41 is driven by the hot-melt welding drive component 47 to move closer to or further away from the corner of the photovoltaic module. The direction of movement of the hot-melt welding drive component 47 is consistent with the diagonal direction of the photovoltaic module. The hot-melt welding drive component 47 drives the mounting base 41 to move closer to the corner of the photovoltaic module. When the corner of the photovoltaic module is completely matched with the hot-melt space 48, the welding seat 42 applies a set pressure to the corner of the photovoltaic module. At the same time as the long side tape and the short side tape are hot-melted together, the hot-melted insulating tape can also be tightly adhered to the corner of the photovoltaic module.

[0042] The working process of the corner hot-melt welding mechanism 4 is as follows: After the three-sided pressing mechanism 3 completely presses the insulating tape onto the photovoltaic module, the mounting base 41 is driven by the hot-melt welding drive 47 to approach the corner of the photovoltaic module, and the corner of the photovoltaic module is completely entered into the hot-melt space 48, and the corner matches the hot-melt space 48. At this time, the first limiting surface 441 and the second limiting surface 442 are adapted and fitted to the two adjacent sides of the corner of the photovoltaic module, respectively. The first limiting block 45 limits the upper surface of the corner of the photovoltaic module, and the second limiting block 46 limits the lower surface of the corner of the photovoltaic module. Then, the third heating element 43 heats the welding base 42, the first limiting block 45 and the second limiting block 46, so that the long side tape and the short side tape are hot-melted and connected together, realizing the hot-melt welding of the long side tape and the short side tape. At the same time, after the long side tape and the short side tape are connected together, they can also be tightly attached to the corner of the photovoltaic module.

[0043] This embodiment further includes a transfer driving member, which drives the support frame 5 to move along the side of the photovoltaic module. The moving speed of the entire edge sealing and hot melting device 100 is 400 mm / s. In other embodiments, the moving speed of the edge sealing and hot melting device 100 can be set according to actual situations, which is not limited herein.

[0044] In this embodiment, an insulating tape is pasted on the edge of the photovoltaic module. In other embodiments, an insulating tape can be pasted on other materials, or other film can be pasted on other materials. As for the materials, tapes or films to be pasted, they can be set according to actual situations, which is not limited herein.

[0045] Embodiment 2: This embodiment provides an edge sealing and hot melting device, which includes the edge sealing and hot melting device as described in Embodiment 1, and there are several edge sealing and hot melting devices. In actual application, the edge sealing and hot melting devices are generally arranged in pairs, and the specific number can be adjusted according to the actual application scenario. For example, when sealing the edges of a photovoltaic module, edge sealing operations need to be performed on the four edges of the photovoltaic module. Therefore, four edge sealing and hot melting devices are provided. The structures and working principles of the four edge sealing and hot melting devices are the same. In the initial position, the four edge sealing and hot melting devices are located at the four corners of the photovoltaic module. When edge sealing and hot melting, the four edge sealing and hot melting devices move along the four edges of the photovoltaic module respectively, attach the insulating tape to the four edges of the photovoltaic module, and at the same time, heat-melt and connect the tails of the insulating tapes at the four corners of the photovoltaic module, so as to complete the edge sealing and hot melting operation on the four sides of the photovoltaic module, and the four corners of the insulating tape are also heat-melt and connected. Another example is that if it is only necessary to paste film on two adjacent sides of the material and connect the tails of the film, two edge sealing and hot melting devices can be provided. The two edge sealing and hot melting devices move close to each other along two adjacent sides of the photovoltaic module respectively, attach the film to the two adjacent sides of the material, and at the same time, heat-melt and connect the tails of the film at the corners of the material.

[0046] Embodiment 3: This embodiment provides an edge sealing and hot melting method, which is completed based on the edge sealing and hot melting device in Embodiment 2, and includes the following steps: Step S1: Several edge sealing and hot melting devices are respectively located at the corners of the photovoltaic module; Step S2: Several edge sealing and hot melting devices move to the sides close to the photovoltaic module at the same time, and move along the sides of the photovoltaic module at the same time. At the same time, the feeding unit 1 releases the insulating tape and pastes the insulating tape on the side of the photovoltaic module. At this time, the insulating tape is in a vertical "|" state, and the upper and lower sides of the insulating tape extend out of the upper and lower surfaces of the photovoltaic module; Step S3: The bending and shaping mechanism 2 moves close to the side of the photovoltaic module. The hot air blowing unit 23 blows hot air towards the side of the insulating tape to soften the insulating tape by heating. Meanwhile, the shaping unit 22 transitions the insulating tape from the vertical "|" state to the ">" state until it is formed into the "]" state, and the insulating tape adheres to the side surface, upper surface, and lower surface of the photovoltaic module simultaneously. Step S4: The three-sided pressing mechanism 3 moves close to the side of the photovoltaic module. The first heating element 37 heats the upper pressing member 36, and the second heating element heats the lower pressing member 38. The upper pressing member 36 and the lower pressing member 38 further soften the insulating tape by heating. Meanwhile, the side pressing member 35, the upper pressing member 36, and the lower pressing member 38 act together to press the insulating tape tightly against the side surface, upper surface, and lower surface at the edge of the photovoltaic module, forming a C-shaped covering. Step S5: After the insulating tape covers the photovoltaic module in a C shape for a set length, the insulating tape is cut. Step S6: The corner hot melting connection mechanism 4 moves close to the corner of the photovoltaic module. The third heating element 43 heats the hot connection space 48. The tails of the long-side insulating tape and the short-side insulating tape are hot-melt connected and tightly adhered to the corner of the photovoltaic module.

[0047] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention.

Claims

1. A sealing heat fusion welding device, characterized in that, It includes: a support frame, and a feeding unit, a bending and shaping mechanism, a three-sided pressing mechanism, and a corner hot melting and welding mechanism that are sequentially arranged on the support frame; the bending and shaping mechanism includes a mounting frame, and a shaping unit and a hot air blowing unit arranged on the mounting frame. The hot air blowing unit has a first air outlet on the side facing the shaping unit; the three-sided pressing mechanism includes a support plate, and a side pressing member, an upper pressing member, and a lower pressing member arranged on the support plate. A first heating member is provided near the upper pressing member, and a second heating member is provided near the lower pressing member; the corner hot melting and welding mechanism includes a welding seat and a third heating member arranged on the welding seat. A hot welding space matching the corner of the material is formed on one side of the welding seat, and the hot welding space is open on the side facing the material.

2. The edge sealing heat fusion welding device as described in claim 1, characterized in that: the shaping unit includes a plurality of shaping components with different inclination angles, and the plurality of shaping components are arranged on the mounting frame in the order of decreasing inclination angles.

3. The edge sealing heat fusion welding device as described in claim 1, characterized in that: the hot air blowing unit includes an air storage box. A hot air pipe is connected to the top of the air storage box. The first air outlet is opened on one side of the lower end of the air storage box, and a gas passage connecting the hot air pipe and the first air outlet is provided inside the air storage box.

4. The edge sealing heat fusion welding device as described in claim 1, characterized in that: the side pressing member is vertically arranged on one side of the support plate. The upper pressing member is located above the side pressing member. The upper pressing member is horizontally arranged on a first mounting block, and the first heating member is arranged on the first mounting block. The lower pressing member is located below the side pressing member. The lower pressing member is horizontally arranged on a second mounting block, and the second heating member is arranged on the second mounting block.

5. The edge sealing heat fusion welding device as described in claim 4, characterized in that: both the first mounting block and the second mounting block are elastically floating up and down on the support plate.

6. The edge sealing heat fusion welding device as described in claim 4, characterized in that: the upper pressing member and the lower pressing member are arranged corresponding to each other up and down. A feeding gap is formed between the upper pressing member and the lower pressing member, and the side pressing member is located on one side of the feeding gap.

7. The edge sealing heat fusion welding device as described in claim 1, characterized in that: a profiling groove extending vertically is opened on one side of the welding seat. The inner wall of the profiling groove forms a first limiting surface and a second limiting surface forming an angle. The first limiting surface and the second limiting surface respectively fit and adhere to the adjacent two side surfaces of the corner of the material.

8. The edge sealing heat fusion welding device as described in claim 7, characterized in that:

9. A sealing heat fusion welding device, characterized in that: a first limiting block and a second limiting block opposite to each other up and down are arranged in the profiling groove. The first limiting surface, the second limiting surface, the lower surface of the first limiting block, and the upper surface of the second limiting block together constitute the hot welding space.

10. A method for edge sealing by heat fusion, characterized in that, It includes the edge sealing hot melting and welding device according to any one of claims 1 to 8, and a plurality of the edge sealing hot melting and welding devices are provided. It is completed based on the edge sealing hot melting and welding equipment according to claim 9, and includes the following steps: Step S1, a plurality of the edge sealing hot melting and welding devices are respectively located at the corners of the photovoltaic module; Step S2, a plurality of the edge sealing hot melting and welding devices simultaneously move close to the side of the photovoltaic module and simultaneously move along the side of the photovoltaic module. At the same time, the feeding unit releases an insulating tape and pastes the insulating tape to the side of the photovoltaic module. At this time, the insulating tape is in a vertical "|" state, and the upper and lower sides of the insulating tape extend out of the upper and lower surfaces of the photovoltaic module; Step S3: The bending and shaping mechanism moves close to the side of the photovoltaic module. The hot air blowing unit blows hot air to the side of the insulating tape to soften the insulating tape by heating. Meanwhile, the shaping unit transitions the insulating tape from the vertical "|" state to the ">" state until it is formed into the "]" state, and the insulating tape adheres to the side, upper surface, and lower surface of the photovoltaic module simultaneously. Step S4: The three-sided pressing mechanism moves close to the side of the photovoltaic module. The first heating element heats the upper pressing member, and the second heating element heats the lower pressing member. The upper pressing member and the lower pressing member further soften the insulating tape by heating. Meanwhile, the side pressing member, the upper pressing member, and the lower pressing member work together to press the insulating tape tightly against the side, upper surface, and lower surface at the edge of the photovoltaic module, forming a C-shaped covering. Step S5: After the insulating tape covers the photovoltaic module in a C shape for a set length, the insulating tape is cut. Step S6: The corner hot melting and connecting mechanism moves close to the corner of the photovoltaic module. The third heating element heats the hot connecting space, and the tails of the long-side insulating tape and the short-side insulating tape are hot-melt connected and tightly adhered to the corner of the photovoltaic module.

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