Smoothing mechanism for covering EVA film on photovoltaic glass plate

Abstract

The utility model relates to an EVA film flattening mechanism for a photovoltaic glass plate. The flattening device comprises two flattening devices which oppositely stretch across the conveying line and are symmetrically arranged, and each flattening device comprises a flattening block with a contact part; the smoothing driving device is used for driving the two smoothing devices to move oppositely or oppositely; the lifting device is used for driving the two smoothing devices to do lifting motion at the same time; when the photovoltaic module is conveyed to a preset position by the conveying line and the two flattening devices descend through the lifting device, the two corresponding contact parts can be driven by the flattening driving device to flatten from the middle area of the photovoltaic glass plate to the two sides of the photovoltaic glass plate. The device can be used between an EVA film placing procedure and a typesetting procedure to uniformly discharge bubbles, and is simple in structure, light in material, low in cost, small in occupied area and free of additional assembly line equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to a photovoltaic glass plate covered with an EVA film smoothing mechanism. Background Art

[0002] In the manufacturing process of photovoltaic modules, the adhesive film is used as a packaging material to adhere and protect the photovoltaic glass and the cell, thereby effectively improving the service life of the photovoltaic module. However, in actual production, when the adhesive film is covered on the photovoltaic glass, bubbles or bulges are easily formed between the adhesive film and the glass due to factors such as unstable air pressure of the machine nozzle and material quality. These bubbles or bulges will seriously affect the subsequent typesetting machine to place the cell. The cell is very thin, and the bubbles and bulges on the EVA (Polyethylene vinylacetate, polyethylene) film can easily cause the typesetting machine to be damaged and broken when grabbing the cell and tin bar, making it impossible to carry out the subsequent process, resulting in losses. Summary of the invention

[0003] In order to solve the problem of uneven EVA film laying on the glass plate and the occurrence of bubbles, the utility model provides a photovoltaic glass plate covered with EVA film smoothing mechanism, which can be used between the EVA film placement process and the typesetting process to evenly discharge bubbles, and the device has a simple structure, light material, reduced costs, small footprint, and no need to add additional assembly line equipment.

[0004] In order to solve the above technical problems, the utility model provides a photovoltaic glass plate coated with EVA film smoothing mechanism, which is installed on a conveyor line conveying photovoltaic modules, wherein the photovoltaic modules include photovoltaic glass plates with EVA films laid on the surface, including:

[0005] Two smoothing devices are arranged symmetrically across the conveying line, each of the smoothing devices comprises a smoothing block having a contact portion;

[0006] A smoothing driving device, used for driving the two smoothing devices to move relative to or away from each other;

[0007] A lifting device, used for driving the two smoothing devices to perform lifting motion simultaneously;

[0008] Among them, when the photovoltaic component is conveyed to a predetermined position by the conveying line, when the two smoothing devices are lowered by the lifting device, the corresponding two contact parts can be driven by the smoothing driving device to smoothen from the middle area of ​​the photovoltaic glass panel to both sides.

[0009] In one embodiment of the present invention, the smoothing block includes a vertical side end surface perpendicular to the horizontal plane and an inclined end surface connected to the vertical side end surface, and a triangular end formed between the vertical side end surface and the inclined end surface constitutes the contact portion.

[0010] In one implementation of the present invention, the smoothing block is in the shape of a triangular prism.

[0011] In one embodiment of the present invention, the smoothing block is made of polytetrafluoroethylene.

[0012] In one embodiment of the utility model, the smoothing drive device includes two mounting bases respectively corresponding to the two smoothing devices, each mounting base is installed with a horizontal cylinder, and the gas rod of the horizontal cylinder passes through the mounting base and is connected to the smoothing device.

[0013] In one embodiment of the utility model, the gas rod of each horizontal cylinder is installed with a connecting beam perpendicular to it, and a horizontal guide rail is installed between the two mounting bases and is located on both sides of the gas rod of the horizontal cylinder and parallel to it. Sliders slidably connected to the corresponding horizontal guide rails are installed at both ends of each connecting beam, and the connecting beam includes an aluminum alloy profile.

[0014] In one embodiment of the present utility model, the lifting device includes lifting cylinders respectively arranged corresponding to the two mounting bases, and the driving rods of the lifting cylinders are connected to the mounting bases.

[0015] In one embodiment of the utility model, it also includes two vertical bases respectively arranged on both sides of the lifting cylinder, and each of the vertical bases is slidably connected to a vertical guide rail connected to the mounting base.

[0016] In one embodiment of the utility model, the lifting cylinder adopts a double-rod cylinder, the mounting base is in the shape of a rectangle, and a horizontal cylinder hole for the gas rod of the horizontal cylinder to pass through and a horizontal guide rail hole for the installation of the horizontal guide rail are arranged along the horizontal direction of the mounting base, and a vertical cylinder hole for the installation of the driving rod of the lifting cylinder and a vertical guide rail hole for the installation of the vertical guide rail are arranged in the middle of the bottom surface in the vertical direction of the mounting base.

[0017] In one embodiment of the utility model, the smoothing device also includes a mold base and a shock-absorbing sponge connected to the mold base, the smoothing block is installed on the shock-absorbing sponge, and the side ends of the mold base and the shock-absorbing sponge are flush with the vertical side end surface of the smoothing block.

[0018] The above technical solution of the utility model has the following advantages compared with the prior art:

[0019] The photovoltaic glass panel covered with EVA film smoothing mechanism described in the utility model can smooth the EVA film from the middle area of ​​the photovoltaic glass panel to both sides through the coordinated action of the smoothing device, the lifting device and the smoothing drive device, effectively remove the bubbles and bulges between the film and the glass, and ensure the flatness of the EVA film. The design of the smoothing device enables it to apply pressure evenly when contacting the EVA film, thereby effectively removing bubbles and bulges, and ensuring the stability and consistency of the smoothing effect. The problem of damage to the battery cells and tin bars caused by bubbles and bulges is avoided, the integrity of the battery cells in the typesetting process is ensured, and production losses are reduced. It can also be easily integrated into the existing production line without the need to modify the existing equipment, and the manufacturing cost is low. At the same time, it occupies a small area and does not require additional assembly line equipment, further reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the main structure of the photovoltaic glass plate covered with EVA film smoothing mechanism of the utility model.

[0022] Figure 2 It is a top view structural schematic diagram of the photovoltaic glass plate covered with EVA film smoothing mechanism of the utility model.

[0023] Figure 3 It is a structural schematic diagram of the installation base of the utility model.

[0024] Figure 4 It is a structural schematic diagram of the lifting device of the utility model.

[0025] Description of the Figures in the Specification:

[0026] 100, conveying line; 1, smoothing device; 11, smoothing block; 111, contact part; 11a, vertical side end surface; 11b, inclined end surface; 12, mold base; 13, shock-absorbing sponge;

[0027] 2. Smoothing drive device; 21. Mounting base; 22. Horizontal cylinder; 221. Gas rod; 23. Connecting beam; 24. Horizontal guide rail; 25. Slider;

[0028] 3. Lifting device; 31. Lifting cylinder; 32. Vertical base; 33. Vertical guide rail. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0030] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0031] In the present utility model, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of the present utility model, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected or electrically connected or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0033] Reference Figures 1 to 4 As shown, a photovoltaic glass plate coated with EVA film smoothing mechanism of the utility model is installed on a conveyor line 100 conveying photovoltaic modules, wherein the photovoltaic modules include photovoltaic glass plates with EVA film laid on the surface, including:

[0034] Two smoothing devices 1 are arranged symmetrically across the conveying line 100 , and each of the smoothing devices 1 comprises a smoothing block 11 having a contact portion 111 ;

[0035] A smoothing driving device 2, used for driving the two smoothing devices 1 to move relative to or away from each other;

[0036] A lifting device 3, used for driving the two smoothing devices 1 to perform lifting motion simultaneously;

[0037] When the photovoltaic assembly is conveyed to a predetermined position by the conveyor line 100 and the two smoothing devices 1 are lowered by the lifting device 3 , the corresponding two contact parts 111 can be driven by the smoothing driving device 2 to smoothen from the middle area of ​​the photovoltaic glass panel to both sides.

[0038] It should be understood that when the photovoltaic glass panel enters the smoothing area of ​​the conveyor line 100, the smoothing drive device 2 contracts from the middle to both sides, and the smoothing device 1 lightly touches the center of the film photovoltaic glass panel and smoothes it to both sides; when the photovoltaic glass panel has not entered the smoothing area, the lifting device 3 is in an ascending state, so that the smoothing device 1 does not contact the EVA film, and when descending, the smoothing device 1 lightly touches the raised (bubble) part of the EVA film.

[0039] Therefore, the device smoothes the EVA film from the middle area of ​​the photovoltaic glass panel to both sides through the coordinated action of the smoothing device 1, the lifting device 3 and the smoothing drive device 2, effectively discharges bubbles and bulges between the film and the glass, and ensures the flatness of the EVA film.

[0040] In one embodiment, the smoothing block 11 includes a vertical side end surface 11 a perpendicular to a horizontal plane and an inclined end surface 11 b connected to the vertical side end surface 11 a , and a triangular end formed between the vertical side end surface 11 a and the inclined end surface 11 b constitutes the contact portion 111 .

[0041] In addition, the vertical side end faces 11a of the two smoothing blocks 11 are arranged in parallel and can be pressed against each other when they move to the middle position so that the smoothing force is evenly distributed in the middle of the photovoltaic glass panel and can both contact the middle area of ​​the photovoltaic glass panel.

[0042] The smoothing device 1 spans the conveyor line 100 and is relatively symmetrically arranged. Through the symmetrically arranged smoothing blocks 11, it can smoothen from the middle area of ​​the photovoltaic glass panel to both sides, which can evenly discharge the bubbles and bulges between the EVA film and the glass, and can ensure the stability and uniformity of the entire smoothing process, and is not prone to deviation or unevenness.

[0043] In one embodiment, the smoothing block 11 is in the shape of a triangular prism, and the length of the smoothing block 11 matches the size of the photovoltaic glass panel.

[0044] In one embodiment, the material of the smoothing block 11 is polytetrafluoroethylene. The smoothing block 11 is made of polytetrafluoroethylene, which has the characteristics of wear resistance, high temperature resistance and low friction, ensuring the stability and effect of long-term use. The characteristics of polytetrafluoroethylene material enable the smoothing block 11 to remain stable in a high temperature environment and not easy to wear, while reducing the friction between the smoothing block 11 and the EVA film to protect the integrity of the film.

[0045] In one embodiment, the smoothing drive device 2 includes two mounting bases 21 respectively corresponding to the two smoothing devices 1, each mounting base 21 is installed with a horizontal cylinder 22, and the gas rod 221 of the horizontal cylinder 22 passes through the mounting base 21 and is connected to the smoothing device 1.

[0046] According to the above arrangement, when the photovoltaic glass panel enters the smoothing area of ​​the conveyor line 100, the smoothing drive device 2 shrinks from the middle to both sides, and the smoothing device 1 touches the center of the film photovoltaic glass panel and smoothes it to both sides. Through pneumatic control, it is ensured that the smoothing block 11 can apply force evenly and discharge bubbles.

[0047] In one embodiment, referring to Figure 2 As shown, since the horizontal cylinder 22 is long, in order to make it move stably, the gas rod 221 of each horizontal cylinder 22 is installed with a connecting beam 23 perpendicular thereto, and horizontal guide rails 24 located on both sides of the gas rod 221 of the horizontal cylinder 22 and parallel thereto are also installed between the two mounting bases 21. Slide blocks 25 slidably connected to the corresponding horizontal guide rails 24 are installed at both ends of each connecting beam 23. The design of the connecting beam 23 and the horizontal guide rail 24 increases the stability of the cylinder movement and prevents the horizontal cylinder 22 from deforming. The connecting beam 23 is vertically installed on the gas rod 221, and the slide block 25 is connected to the horizontal guide rail 24 to form a balancing effect to ensure the smooth movement of the cylinder. The connecting beam 23 includes an aluminum alloy profile, which is light in weight and low in cost.

[0048] In one embodiment, the lifting device 3 includes lifting cylinders 31 respectively arranged corresponding to the two mounting bases 21 , and the driving rods of the lifting cylinders 31 are connected to the mounting bases 21 .

[0049] In one embodiment, two vertical bases 32 are further included, which are respectively arranged on both sides of the lifting cylinder 31 , and each of the vertical bases 32 is slidably connected to a vertical guide rail 33 connected to the mounting base 21 .

[0050] In one embodiment, the lifting cylinder 31 adopts a double-rod cylinder, and the mounting base 21 is in a rectangular shape. A horizontal cylinder 22 hole for the gas rod 221 of the horizontal cylinder 22 to pass through and a horizontal guide rail 24 hole for the installation of the horizontal guide rail 24 are arranged along the horizontal direction of the mounting base 21. A vertical cylinder hole for the installation of the driving rod of the lifting cylinder 31 and a vertical guide rail 33 hole for the installation of the vertical guide rail 33 are arranged in the middle of the bottom surface in the vertical direction of the mounting base 21.

[0051] The lifting device 3 is used to drive the two smoothing devices 1 to perform lifting movements simultaneously, ensuring that the smoothing device 1 is in an ascending state when it is not in contact with the EVA film, avoiding unnecessary contact and damage, and being able to adjust the height of the smoothing device 1 as needed to adapt to photovoltaic glass panels and EVA films of different thicknesses.

[0052] In one embodiment, the smoothing device 1 also includes a mold base 12 and a shock-absorbing sponge 13 connected to the mold base 12, and the smoothing block 11 is installed on the shock-absorbing sponge 13, and the side ends of the mold base 12 and the shock-absorbing sponge 13 are flush with the vertical side end surface 11a of the smoothing block 11.

[0053] In addition, since the aluminum alloy profile has a notch, the mold base 12 can be provided with a corresponding plug-in column that is plugged into the aluminum alloy profile. When the smoothing device 1 is replaced, it can be directly inserted into the notch of the aluminum alloy, which is convenient and time-saving. The shock-absorbing sponge 13 uses a high-density sponge, which is light and soft. It plays a buffering role in the smoothing process to prevent the smoothing block 11 from causing hard damage to the EVA film and the glass plate, causing collision and crushing or crushing of the EVA film and the glass plate. It also provides a buffer when the two smoothing devices 1 are close to each other and contact, reducing the vibration caused by the collision.

[0054] During operation, before the photovoltaic glass panel (with an EVA film with bulges and bubbles spread on its surface) enters the conveyor line 100, the lifting cylinder 31 rises and the photovoltaic glass panel enters the smoothing area. After the photovoltaic glass panel enters, the long horizontal cylinders 22 on both sides extend to the middle of the photovoltaic glass panel, and the lifting cylinder 31 descends just enough to make the smoothing block 11 lightly touch the EVA film. At this time, the horizontal telescopic cylinders on both sides contract, and the smoothing block 11 smoothes from the middle to both sides. After the action is completed, the lifting cylinder 31 rises to make the entire mechanism leave the EVA film and the glass panel. At this time, the horizontal telescopic cylinder extends to wait for the next photovoltaic glass panel. The action is completed, and the photovoltaic glass panel proceeds to the next process.

[0055] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A photovoltaic glass plate coated with EVA film smoothing mechanism, installed on a conveyor line (100) conveying photovoltaic modules, wherein the photovoltaic modules include photovoltaic glass plates with EVA film laid on the surface, characterized in that: include: Two smoothing devices (1) are arranged symmetrically across the conveying line (100), each of the smoothing devices (1) comprising a smoothing block (11) having a contact portion (111); A smoothing drive device (2) used for driving the two smoothing devices (1) to move relative to or away from each other; A lifting device (3) used for driving the two smoothing devices (1) to perform lifting movements simultaneously; When the photovoltaic assembly is conveyed to a predetermined position by the conveyor line (100), the two smoothing devices (1) are lowered by the lifting device (3), and the corresponding two contact portions (111) can be driven by the smoothing drive device (2) to smoothen the photovoltaic glass panel from the middle area to both sides.

2. A photovoltaic glass panel EVA film smoothing mechanism according to claim 1, characterized in that: The smoothing block (11) comprises a vertical side end surface (11a) perpendicular to a horizontal plane and an inclined end surface (11b) connected to the vertical side end surface (11a), and a triangular end formed between the vertical side end surface (11a) and the inclined end surface (11b) constitutes the contact portion (111).

3. A photovoltaic glass panel EVA film smoothing mechanism according to claim 2, characterized in that: The smoothing block (11) is in the shape of a triangular prism.

4. A photovoltaic glass panel EVA film smoothing mechanism according to any one of claims 1 to 3, characterized in that: The material of the smoothing block (11) is polytetrafluoroethylene.

5. The photovoltaic glass panel EVA film smoothing mechanism according to claim 1, characterized in that: The smoothing drive device (2) comprises two mounting bases (21) respectively arranged corresponding to the two smoothing devices (1), each mounting base (21) being mounted with a horizontal cylinder (22), and a gas rod (221) of the horizontal cylinder (22) passing through the mounting base (21) and connected to the smoothing device (1).

6. A photovoltaic glass plate EVA film smoothing mechanism according to claim 5, characterized in that: The gas rod (221) of each horizontal cylinder (22) is provided with a connecting beam (23) perpendicular thereto, and horizontal guide rails (24) located on both sides of the gas rod (221) of the horizontal cylinder (22) and parallel thereto are also provided between the two mounting bases (21), and sliding blocks (25) slidably connected to the corresponding horizontal guide rails (24) are provided at both ends of each connecting beam (23), and the connecting beam (23) comprises an aluminum alloy profile.

7. A photovoltaic glass plate EVA film smoothing mechanism according to claim 6, characterized in that: The lifting device (3) comprises lifting cylinders (31) respectively arranged corresponding to the two mounting bases (21), and a driving rod of the lifting cylinder (31) is connected to the mounting base (21).

8. A photovoltaic glass plate EVA film smoothing mechanism according to claim 7, characterized in that: It also includes two vertical bases (32) respectively arranged on both sides of the lifting cylinder (31), and each of the vertical bases (32) is slidably connected to a vertical guide rail (33) connected to the mounting base (21).

9. A photovoltaic glass plate EVA film smoothing mechanism according to claim 8, characterized in that: The lifting cylinder (31) is a double-rod cylinder. The mounting base (21) is in the shape of a rectangular body. A horizontal cylinder (22) hole for the gas rod (221) of the horizontal cylinder (22) to pass through and a horizontal guide rail (24) hole for the horizontal guide rail (24) to be installed are arranged along the horizontal direction of the mounting base (21). A vertical cylinder hole for the drive rod of the lifting cylinder (31) to be installed and a vertical guide rail (33) hole for the vertical guide rail (33) to be installed are arranged in the middle of the bottom surface of the mounting base (21) in the vertical direction.

10. A photovoltaic glass plate EVA film smoothing mechanism according to claim 2, characterized in that: The smoothing device (1) further comprises a mold base (12) and a shock-absorbing sponge (13) connected to the mold base (12); the smoothing block (11) is mounted on the shock-absorbing sponge (13); and the side ends of the mold base (12) and the shock-absorbing sponge (13) are flush with the vertical side end surface (11a) of the smoothing block (11).

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