A film coating mechanism and apparatus for photovoltaic materials

Abstract

The present application relates to the field of film covering, in particular to a kind of film covering mechanism of photovoltaic material, and photovoltaic material is specifically photovoltaic glass, including the lifting frame being arranged above photovoltaic glass, hot pressing film is arranged on the lifting frame, the upper surface of hot pressing film is along the edge direction of lifting frame and is equipped with several hot pressing rollers at equal intervals, the surface of each hot pressing roller is combined with hot pressing film, heating bin is also arranged on the lifting frame, all hot pressing rollers can be synchronously moved horizontally along the edge direction of lifting frame, translation driving assembly for driving all hot pressing rollers to move back and forth on the surface of hot pressing film is arranged on the lifting frame, the present application is extruded to transparent film by hot pressing film, transparent film is rolled by hot pressing roller, in the way of combination of hot pressing and rolling, make transparent film and photovoltaic glass more closely, reach the effect of removing bubble and removing wrinkle, guarantee the quality of photovoltaic glass film covering.The present application also relates to a kind of film covering equipment of photovoltaic material.

Description

Technical Field

[0001] This invention relates to the field of coating, specifically to a coating mechanism for photovoltaic materials, and also to a coating device for photovoltaic materials. Background Technology

[0002] Photovoltaic glass coating refers to the process of coating a transparent photovoltaic film onto the glass surface. This process is achieved by coating a thin film material onto the glass surface. In the actual process of photovoltaic glass coating, existing coating institutions are very prone to causing bubbles or wrinkles in the transparent film, which are unsightly and become defective products, making it impossible to guarantee quality.

[0003] The currently disclosed Chinese patent CN115504009B discloses a film-applying device for photovoltaic glass coating processing, which includes a base plate. Conveyors are provided on both sides of the top of the base plate, and the two conveyors are arranged opposite each other. A U-shaped frame is fixedly connected to the top of each of the two conveyors. Rotating components are provided at both ends of the inner side of the U-shaped frame. A scraper for pressing the coating surface of the glass plate is fixedly connected to the other end of the rotating component. The scraper can be driven to swing through the rotating component. A linkage component is provided inside the U-shaped frame for transmission connection with the conveyors. Telescopic components are provided at both ends of the U-shaped frame for connection with the linkage component. The telescopic components can drive the rotating component and the scraper to swing.

[0004] According to the aforementioned patent, the patent uses a scraper to continuously oscillate on a glass plate to remove air bubbles between the glass plate and the film, preventing the bubbles from dispersing into smaller bubbles and thus avoiding bubble residue. However, this method is prone to damaging the film and has poor flatness. Therefore, there is a need for a coating mechanism that can flatten the film through a combination of hot pressing and rolling. Summary of the Invention

[0005] To address the problems existing in the current technology, this invention provides a coating mechanism for photovoltaic materials. The invention uses a hot-pressing film to extrude a transparent film and a hot-pressing roller to roll the transparent film. By combining hot pressing and rolling, the transparent film is more tightly bonded to the photovoltaic glass, achieving the effects of removing bubbles and wrinkles, and ensuring the quality of photovoltaic glass coating.

[0006] To address the problems of existing technologies, this invention provides a coating mechanism for photovoltaic materials, specifically photovoltaic glass. The mechanism includes a lifting frame positioned above the photovoltaic glass. A hot-pressing film is mounted on the lifting frame to flatten a transparent film coated on the surface of the photovoltaic glass. The two edges of the hot-pressing film are fixedly connected to the lifting frame. Several hot-pressing rollers are evenly spaced along the edge direction of the lifting frame on the upper surface of the hot-pressing film. The surface of each hot-pressing roller is in contact with the hot-pressing film. A heating chamber is also mounted on the lifting frame to provide heat to the hot-pressing film. The heating chamber is fixedly mounted on the lifting frame and located above the hot-pressing rollers. All hot-pressing rollers can move horizontally synchronously along the edge direction of the lifting frame. A translation drive assembly is mounted on the lifting frame to drive all the hot-pressing rollers to reciprocate back and forth on the surface of the hot-pressing film.

[0007] Preferably, the front end of the lifting frame is provided with a baffle, and the rear end of the lifting frame is provided with a positioning block. A gap is left between the baffle and the positioning block for the photovoltaic glass to be limited therein. The edge of the hot pressing film passes around the lower end of the positioning block and is fixedly connected to the lifting frame. Two clamping plates are provided on both sides of the baffle with their cross-section as symmetrical. The two clamping plates can move relative to each other along the long side of the baffle. The lifting frame is provided with a bidirectional screw driver for driving the relative movement of the two clamping plates.

[0008] Preferably, the heating chamber is composed of an upper shell and a lower shell, with a heating cavity formed between the upper shell and the lower shell. The upper shell is provided with an air inlet pipe, and a drainage channel is provided between every two adjacent hot press rollers. The lower shell is provided with an exhaust port that communicates with each drainage channel, and the channel opening of the drainage channel faces the surface of the hot press film.

[0009] Preferably, each drainage channel is connected to the lower housing with a sealing strip that surrounds the drainage channel. When the hot press roller moves, the drainage channel moves together with the hot press roller, and the sealing strip is in a deformed state.

[0010] Preferably, the translation drive assembly is provided with a movable frame, which is slidably mounted on the lifting frame. A connecting strip is fixed on both sides of the movable frame. Each connecting strip has a through-hole in which the end of each hot press roller is fitted. Each hot press roller is rotatably mounted between two connecting strips. The lifting frame is provided with a one-way screw driver for driving the movable frame to move back and forth.

[0011] Preferably, the hot press roller has an air cavity that extends through both ends, and the surface of the hot press roller has a number of air holes along its axial direction.

[0012] Preferably, a heat-conducting rubber sleeve is fitted onto the hot press roller, and the heat-conducting rubber sleeve is in contact with the surface of the hot press film.

[0013] Preferably, a first spring is connected between the positioning block and the lifting frame, and a first guide rod is provided on the edge of the lifting frame, extending outward through the first spring. The positioning block has a first guide sleeve that is slidably sleeved on the first guide rod. The two ends of the first spring are fixedly connected to the lifting frame and the first guide sleeve, respectively. The movement direction of the positioning block is parallel to the surface of the lifting frame.

[0014] Preferably, a second spring is connected between the baffle and the lifting frame. The edge of the baffle is provided with a second guide rod extending downward through the first spring. The edge of the lifting frame is provided with a second guide sleeve sleeved on the second guide rod. The two ends of the second spring are fixedly connected to the baffle and the second guide sleeve, respectively. The direction of movement of the baffle is perpendicular to the surface of the lifting frame. A fixing strip is provided on the lower sides of the baffle. When the baffle contacts the fixing strip and the second spring is in the normal state, the positioning pressure block is in a state of being flush with the surface of the transparent film. When the baffle contacts the fixing strip and the second spring is in a compressed state, the hot-press film is in a state of being completely pressed against the surface of the transparent film.

[0015] The present invention also provides a photovoltaic material coating device, including a conveying mechanism, a lifting mechanism, and a photovoltaic material coating mechanism. The lifting frame in the coating mechanism is disposed on the lifting mechanism and is located above the conveying mechanism. The fixing strip in the coating mechanism is fixedly disposed on the edge of the conveying mechanism.

[0016] The advantages of this application compared to the prior art are:

[0017] 1. This invention uses a hot-pressing film to extrude a transparent film and a hot-pressing roller to roll the transparent film. By combining hot pressing and rolling, the transparent film is more tightly bonded to the photovoltaic glass, achieving the effects of removing air bubbles and wrinkles. The flexible structure of the hot-pressing film also acts as a buffer for the hot-pressing roller, preventing damage to the transparent film and achieving stable coating of the photovoltaic glass, thus ensuring the quality of the photovoltaic glass coating.

[0018] 2. This invention uses positioning blocks, baffles, and a pair of clamps to limit the position of the photovoltaic glass, keeping it positioned below the hot-pressing film. This allows the hot-pressing film to fully compress the transparent film on the surface of the photovoltaic glass, achieving stable hot pressing of the transparent film by the hot-pressing film. This prevents the photovoltaic glass from moving during the hot pressing process, improves stability, and enhances the hot pressing effect, ensuring that the transparent film effectively removes bubbles and wrinkles. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a coating mechanism and equipment for photovoltaic materials.

[0020] Figure 2 This is a partial three-dimensional structural cross-sectional view of a photovoltaic material coating mechanism and equipment;

[0021] Figure 3 yes Figure 2 Enlarged view of point A;

[0022] Figure 4 This is a three-dimensional structural diagram of a coating mechanism and equipment for photovoltaic materials, and photovoltaic glass.

[0023] Figure 5 yes Figure 4 Enlarged view of point B;

[0024] Figure 6 This is an exploded three-dimensional structural diagram of a coating mechanism and equipment for photovoltaic materials, including the coating mechanism and photovoltaic glass.

[0025] Figure 7 yes Figure 6 Enlarged schematic diagram at point C;

[0026] Figure 8 This is a three-dimensional structural cross-sectional view of a coating mechanism and equipment for photovoltaic materials, and of a coating mechanism and photovoltaic glass.

[0027] Figure 9 This is a planar sectional view of a coating mechanism and equipment for photovoltaic materials, and of photovoltaic glass.

[0028] Figure 10 yes Figure 9 Enlarged diagram of point D;

[0029] Figure 11 This is a three-dimensional exploded view of the coating mechanism of a photovoltaic material coating mechanism and equipment;

[0030] Figure 12 This is a schematic diagram of the top-view three-dimensional structure of a coating mechanism and equipment for photovoltaic materials.

[0031] Figure 13 This is a partial three-dimensional structural diagram of the coating mechanism of a photovoltaic material coating mechanism and equipment, showing its lower orientation.

[0032] The diagram is labeled as follows: 1-Photovoltaic glass; 11-Transparent film; 2-Lifting frame; 21-Baffle; 211-Second spring; 2111-Second guide rod; 2112-Second guide sleeve; 212-Fixing strip; 22-Clamping plate; 221-Bidirectional screw driver; 3-Hot pressing film; 31-Positioning block; 32-First spring; 321-First guide rod; 322-First guide sleeve; 4-Hot pressing roller; 41-Air chamber; 411-Air hole; 42-Heat conductive rubber sleeve; 5-Heating chamber; 51-Upper shell; 511-Inflation pipe; 52-Lower shell; 521-Drainage channel; 522-Exhaust port; 5221-Sealing strip; 53-Heating chamber; 6-Translation drive assembly; 61-Moving frame; 611-Connecting strip; 62-Unidirectional screw driver; 7-Conveyor. Detailed Implementation

[0033] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0034] See Figures 1-11 As shown, a coating mechanism for a photovoltaic material, specifically photovoltaic glass 1, includes a lifting frame 2 positioned above the photovoltaic glass 1. The lifting frame 2 is equipped with a hot-pressing film 3 for smoothing a transparent film 11 coated on the surface of the photovoltaic glass 1. The two sides of the hot-pressing film 3 are fixedly connected to the lifting frame 2. Several hot-pressing rollers 4 are evenly spaced along the edge direction of the lifting frame 2 on the upper surface of the hot-pressing film 3. The surface of each hot-pressing roller 4 is in contact with the hot-pressing film 3. The lifting frame 2 is also equipped with a heating chamber 5 for providing heat to the hot-pressing film 3. The heating chamber 5 is fixedly positioned on the lifting frame 2 and located above the hot-pressing rollers 4. All the hot-pressing rollers 4 can move horizontally synchronously along the edge direction of the lifting frame 2. The lifting frame 2 is equipped with a translation drive assembly 6 for driving all the hot-pressing rollers 4 to reciprocate back and forth on the surface of the hot-pressing film 3.

[0035] The coating mechanism also includes a spraying assembly for uniformly coating photovoltaic thin film material onto the surface of photovoltaic glass 1 to form a transparent film 11. The spraying assembly is mounted on the lifting frame 2 and is not shown in the figure.

[0036] After a transparent film 11 is coated on the surface of photovoltaic glass 1, the lifting frame 2 moves the hot pressing film 3 close to the photovoltaic glass 1 until the hot pressing film 3 is pressed against the surface of the transparent film 11. At this time, the heating chamber 5 is activated, and hot air is applied to the surface of the hot pressing film 3, making the transparent film 11 soft. Then, the translation drive component 6 drives several hot pressing rollers 4 to move against the surface of the hot pressing film 3. The hot pressing rollers 4 move back and forth on the surface of the hot pressing film 3 to remove air bubbles in the transparent film 11 and achieve a smooth effect. The combination of hot pressing and roller pressing can increase the contact area between the transparent film 11 and the surface of photovoltaic glass 1, enhance the bonding force between the two, and improve the stability and durability of photovoltaic materials. Therefore, the coating effect of photovoltaic glass 1 is improved, and the quality of photovoltaic glass 1 coating is guaranteed.

[0037] See Figures 1-10 As shown, the front end of the lifting frame 2 is provided with a baffle 21, and the rear end of the lifting frame 2 is provided with a positioning block 31. A gap is left between the baffle 21 and the positioning block 31 for the photovoltaic glass 1 to be limited therein. The edge of the hot pressing film 3 passes around the lower end of the positioning block 31 and is fixedly connected to the lifting frame 2. Two clamping plates 22 are provided on both sides of the baffle 21 with its cross section as symmetrical. The two clamping plates 22 can move relative to each other along the long side of the baffle 21. The lifting frame 2 is provided with a bidirectional screw driver 221 for driving the two clamping plates 22 to move relative to each other.

[0038] The positioning block 31 maintains pressure on the hot-pressing film 3, allowing it to press more tightly against the transparent film 11 on the surface of the photovoltaic glass 1. The baffle 21, the positioning block 31, and the two clamping plates 22 achieve precise positioning of the photovoltaic glass 1. When the photovoltaic glass 1 is conveyed to the position where it contacts the baffle 21, the conveying of the photovoltaic glass 1 is stopped by the baffle 21. Then, the positioning block 31 presses down, limiting the photovoltaic glass 1 between the baffle 21 and the positioning block 31, while simultaneously pressing the hot-pressing film 3 against the transparent film 11 on the surface of the photovoltaic glass 1. The photovoltaic glass 1 is adjusted to a position directly below the hot-pressing film 3 by two clamping plates 22. The photovoltaic glass 1 is finally fixed, ensuring that the hot-pressing film 3 can be hot-pressed in the correct position and angle, thereby improving production efficiency and product quality. It can adapt to photovoltaic glass 1 of different sizes and shapes, improving production flexibility and applicability. In addition, the edge of the hot-pressing film 3 is fixedly connected to the lower end of the positioning block 31, which can ensure good contact between the hot-pressing film 3 and the transparent film 11, thereby ensuring the effect of hot pressing and effectively flattening the transparent film 11.

[0039] See Figure 6 , Figure 8 , Figure 9 and Figure 11As shown, the heating chamber 5 is composed of an upper shell 51 and a lower shell 52, and a heating cavity 53 is formed between the upper shell 51 and the lower shell 52. An air inlet pipe 511 is provided on the upper shell 51, and a flow channel 521 is provided between every two adjacent hot press rollers 4. An exhaust port 522 connected to each flow channel 521 is provided on the lower shell 52, and the channel opening of the flow channel 521 is directly opposite the surface of the hot press film 3.

[0040] The heating cavity 53 formed between the upper shell 51 and the lower shell 52 can be vented with hot air. Hot air is injected through the air filling pipe 511 and discharged from the exhaust port 522. The arrangement of the drainage channel 521 can ensure that the hot air acts on the hot pressing film 3 and keep the surface temperature of the hot pressing film 3 uniform, so that the area of ​​the hot pressing film 3 is kept in a heated state, ensuring that the hot pressing film 3 effectively heats and presses the transparent film 11, thereby improving the flatness of the transparent film 11.

[0041] See Figure 9 and Figure 11 As shown, each drainage channel 521 is connected to the lower housing 52 by a sealing strip 5221 that surrounds the drainage channel 521. When the hot press roller 4 moves, the drainage channel 521 moves together with the hot press roller 4, and the sealing strip 5221 is in a deformed state.

[0042] The connection between the drainage channel 521 and the lower housing 52 ensures that the drainage channel 521 remains connected to the exhaust port 522 as it moves with the hot press roller 4. The deformation of the sealing strip 5221 effectively prevents hot air in the heating chamber 53 from leaking out of the gap, thereby improving the heating effect and working efficiency. The sealing strip 5221 surrounding the drainage channel 521 can effectively seal the hot air in the heating chamber 53, preventing the hot air from leaking out and allowing it to be discharged only through the drainage channel 521. The drainage channel 521 is always facing the surface of the hot press film 3, improving the heating effect of the hot press film 3.

[0043] See Figure 2 , Figure 8 , Figure 11 and Figure 12 As shown, the translation drive assembly 6 is provided with a movable frame 61, which is slidably mounted on the lifting frame 2. A connecting strip 611 is fixed on both sides of the movable frame 61. Each connecting strip 611 has a through-hole in which the end of each hot press roller 4 is fitted. Each hot press roller 4 is rotatably mounted between two connecting strips 611. The lifting frame 2 is provided with a one-way screw driver 62 for driving the movable frame 61 to move back and forth.

[0044] The moving frame 61 controls the movement of all the hot press rollers 4. The hot press rollers 4 are positioned between the openings of the two connecting strips 611, ensuring that the hot press rollers 4 can rotate between the connecting strips 611. The movement of the moving frame 61 enables the hot press rollers 4 to reciprocate on the surface of the hot press film 3. As several hot press rollers 4 reciprocate on the surface of the hot press film 3, they can help the transparent film 11 to bond better with the photovoltaic glass 1, increase the bonding strength, and ensure the quality and stability of the photovoltaic glass 1. Through the pressure and temperature action of the hot press film 3 on the transparent film 11, the surface flatness of the transparent film 11 can be improved, surface defects and bubbles can be reduced, thereby improving the transparency and optical performance of the transparent film 11. The transparent film 11 is usually used as the conductive layer of the photovoltaic glass 1. The role of the hot press rollers 4 can also help improve the conductivity of the transparent film 11 and ensure the electrical performance of the photovoltaic glass 1.

[0045] See Figure 3 As shown, the hot press roller 4 has an air cavity 41 that extends through both ends, and a number of air holes 411 are opened on the surface of the hot press roller 4 along its axial direction.

[0046] The hot press roller 4 has an air inlet at one end and an air outlet at the other. The inlet and outlet of hot air have a heating effect on the hot press roller 4. The introduction of hot air can raise the surface temperature of the hot press roller 4, thereby increasing the hot pressing temperature. This helps to soften the transparent film 11, making it easier to bond with the photovoltaic glass 1. It also helps to improve the efficiency and quality of hot pressing. During the hot pressing process, the transparent film 11 is heated at a uniform temperature, which is more conducive to improving the surface flatness and quality of the transparent film 11.

[0047] See Figure 3 As shown, a heat-conducting rubber sleeve 42 is fitted on the hot press roller 4, and the heat-conducting rubber sleeve 42 is in contact with the surface of the hot press film 3.

[0048] Hot air is discharged from the vent 411 and acts on the heat-conducting rubber sleeve 42. The heat-conducting rubber sleeve 42 can enhance the contact between the hot pressing roller 4 and the hot pressing film 3, thereby improving the heat conduction efficiency and making the heat energy more evenly transferred to the surface of the hot pressing film 3, which helps to improve the heating effect of hot pressing. The heat-conducting rubber sleeve 42 can also apply more uniform pressure to the hot pressing film 3, preventing local excessively high or low pressure during the hot pressing process, thereby improving the hot pressing effect of the transparent film 11, and reducing the friction and wear of the hot pressing roller 4 on the hot pressing film 3, thus extending the service life of the hot pressing film 3.

[0049] See Figure 8 and Figure 10As shown, a first spring 32 is connected between the positioning block 31 and the lifting frame 2. The edge of the lifting frame 2 is provided with a first guide rod 321 that extends outward through the first spring 32. The positioning block 31 has a first guide sleeve 322 that is slidably sleeved on the first guide rod 321. The two ends of the first spring 32 are fixedly connected to the lifting frame 2 and the first guide sleeve 322 respectively. The direction of movement of the positioning block 31 is parallel to the surface of the lifting frame 2.

[0050] When the photovoltaic glass 1 is positioned between the baffle 21 and the positioning block 31, in order to accommodate the different size differences of different photovoltaic glass 1, the first spring 32 set between the positioning block 31 and the lifting frame 2 allows the positioning block 31 to adjust the squeezing force on the photovoltaic glass 1 by the force of the first spring 32, so that the photovoltaic glass 1 can be stably positioned between the positioning block 31 and the baffle 21, ensuring the stability of the hot pressing of the transparent film 11.

[0051] See Figures 9-13 As shown, a second spring 211 is connected between the baffle 21 and the lifting frame 2. The edge of the baffle 21 is provided with a second guide rod 2111 extending downward through the first spring 32. The edge of the lifting frame 2 is provided with a second guide sleeve 2112 sleeved on the second guide rod 2111. The two ends of the second spring 211 are fixedly connected to the baffle 21 and the second guide sleeve 2112 respectively. The direction of movement of the baffle 21 is perpendicular to the surface of the lifting frame 2. A fixing strip 212 is provided on the lower sides of the baffle 21 respectively. When the baffle 21 contacts the fixing strip 212 and the second spring 211 is in the normal state, the positioning block 31 is in a state of being flush with the surface of the transparent film 11. When the baffle 21 contacts the fixing strip 212 and the second spring 211 is in a compressed state, the hot pressing film 3 is in a state of being completely pressed against the surface of the transparent film 11.

[0052] When the baffle 21 just contacts the fixing strip 212, the second spring 211 is in the normal state. At this time, the photovoltaic glass 1 can enter under the hot pressing film 3 until the photovoltaic glass 1 contacts the baffle 21. At this time, the hot pressing film 3 continues to press down until the hot pressing film 3 is pressed against the surface of the transparent film 11. The baffle 21 is held in place by the fixing strip 212, while the second spring 211 is in a compressed state. At this time, the positioning block 31 is flush with the baffle 21, thereby positioning the photovoltaic glass 1 between the two, completing the fixation of the photovoltaic glass 1, and ensuring the stability of the hot pressing roller 4 pressing the transparent film 11.

[0053] A photovoltaic material coating device includes a conveying mechanism 7, a lifting mechanism, and a photovoltaic material coating mechanism. The lifting frame 2 in the coating mechanism is disposed on the lifting mechanism and is located above the conveying mechanism 7. The fixing strip 212 in the coating mechanism is fixedly disposed on the edge of the conveying mechanism 7.

[0054] The conveyor 7 is used to transport the photovoltaic glass 1, and the lifting mechanism is used to drive the lifting frame 2 to move up and down relative to the photovoltaic glass 1. The lifting mechanism is not shown in the figure.

[0055] This invention uses a hot-pressing film 3 to extrude a transparent film 11 and a hot-pressing roller 4 to roll the transparent film 11. By combining hot pressing and rolling, the transparent film 11 is more tightly bonded to the photovoltaic glass 1, achieving the effects of removing air bubbles and wrinkles. The flexible structure of the hot-pressing film 3 also acts as a buffer for the hot-pressing roller 4, preventing damage to the transparent film 11 and ensuring the quality of the coating on the photovoltaic glass 1.

[0056] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A coating mechanism for a photovoltaic material, specifically a photovoltaic glass (1), characterized in that, The system includes a lifting frame (2) positioned above the photovoltaic glass (1). The lifting frame (2) is equipped with a hot pressing film (3) for flattening the transparent film (11) coated on the surface of the photovoltaic glass (1). The two sides of the hot pressing film (3) are fixedly connected to the lifting frame (2). Several hot pressing rollers (4) are evenly spaced on the upper surface of the hot pressing film (3) along the edge direction of the lifting frame (2). The surface of each hot pressing roller (4) is in contact with the hot pressing film (3). The lifting frame (2) is also equipped with a heating chamber (5) for providing heat to the hot pressing film (3). The heating chamber (5) is fixedly positioned on the lifting frame (2) and is located above the hot pressing rollers (4). All the hot pressing rollers (4) can move horizontally along the edge direction of the lifting frame (2) synchronously. The lifting frame (2) is equipped with a translation drive assembly (6) for driving all the hot pressing rollers (4) to move back and forth on the surface of the hot pressing film (3). The front end of the lifting frame (2) is provided with a baffle (21), and the rear end of the lifting frame (2) is provided with a positioning block (31). A gap is left between the baffle (21) and the positioning block (31) for the photovoltaic glass (1) to be limited therein. The edge of the hot pressing film (3) passes around the lower end of the positioning block (31) and is fixedly connected to the lifting frame (2). Two clamping plates (22) are provided on both sides of the baffle (21) with their cross-section as symmetrical. The two clamping plates (22) can move relative to each other along the long side of the baffle (21). The lifting frame (2) is provided with a bidirectional screw driver (221) for driving the two clamping plates (22) to move relative to each other. The positioning block (31) provides pressure retention for the hot-press film (3), allowing it to press more tightly against the transparent film (11) on the surface of the photovoltaic glass (1). The baffle (21), the positioning block (31), and the two clamps (22) achieve precise positioning of the photovoltaic glass (1). When the photovoltaic glass (1) is transported to the position where it contacts the baffle (21), the photovoltaic glass (1) is stopped by the baffle (21). Then, the positioning block (31) presses down, limiting the photovoltaic glass (1) between the baffle (21) and the positioning block (31), while simultaneously pressing the hot-press film (3) against the surface of the photovoltaic glass (1). On the transparent film (11), the photovoltaic glass (1) is adjusted to the position directly below the hot pressing film (3) by two clamps (22). The photovoltaic glass (1) is finally fixed to ensure that the hot pressing film (3) can be hot pressed in the correct position and angle, thereby improving production efficiency and product quality, adapting to photovoltaic glass (1) of different sizes and shapes, improving production flexibility and applicability. In addition, the edge of the hot pressing film (3) is fixedly connected to the lower end of the positioning block (31), which can ensure good contact between the hot pressing film (3) and the transparent film (11), thereby ensuring the effect of hot pressing and effectively flattening the transparent film (11). A second spring (211) is connected between the baffle (21) and the lifting frame (2). The edge of the baffle (21) is provided with a second guide rod (2111) extending downward through the first spring (32). The edge of the lifting frame (2) is provided with a second guide sleeve (2112) sleeved on the second guide rod (2111). The two ends of the second spring (211) are fixedly connected to the baffle (21) and the second guide sleeve (2112) respectively. The direction of movement of the baffle (21) is perpendicular to the surface of the lifting frame (2). A fixing strip (212) is provided on the lower sides of the baffle (21). When the baffle (21) contacts the fixing strip (212) and the second spring (211) is in the normal state, the positioning block (31) is in the state of being flush with the surface of the transparent film (11). When the baffle (21) contacts the fixing strip (212) and the second spring (211) is in the compressed state, the hot pressing film (3) is in the state of being completely pressed on the surface of the transparent film (11). When the baffle (21) just contacts the fixing strip (212), the second spring (211) is in normal state. At this time, the photovoltaic glass (1) can enter the bottom of the hot pressing film (3) until the photovoltaic glass (1) contacts the baffle (21). At this time, the hot pressing film (3) continues to press down until the hot pressing film (3) is pressed on the surface of the transparent film (11). The baffle (21) remains unchanged under the resistance of the fixing strip (212), while the second spring (211) is in a compressed state. At this time, the positioning block (31) is flush with the baffle (21), thereby positioning the photovoltaic glass (1) between the two, completing the fixation of the photovoltaic glass (1), and ensuring the stability of the hot pressing roller (4) pressing the transparent film (11).

2. The coating mechanism for a photovoltaic material according to claim 1, characterized in that, The heating chamber (5) is composed of an upper shell (51) and a lower shell (52). A heating cavity (53) is formed between the upper shell (51) and the lower shell (52). An air inlet pipe (511) is provided on the upper shell (51). A drainage channel (521) is provided between every two adjacent hot press rollers (4). An exhaust port (522) connected to each drainage channel (521) is provided on the lower shell (52). The channel opening of the drainage channel (521) is directly opposite the surface of the hot press film (3).

3. The coating mechanism for a photovoltaic material according to claim 2, characterized in that, Each drainage channel (521) is connected to the lower housing (52) by a sealing strip (5221) that surrounds the drainage channel (521). When the hot press roller (4) moves, the drainage channel (521) moves together with the hot press roller (4), and the sealing strip (5221) is in a deformed state.

4. The coating mechanism for a photovoltaic material according to claim 1, characterized in that, The translation drive assembly (6) is provided with a moving frame (61), which is slidably mounted on the lifting frame (2). A connecting strip (611) is fixed on both sides of the moving frame (61). Each connecting strip (611) has a through-hole in which the end of each hot press roller (4) is fitted. Each hot press roller (4) is rotatably mounted between the two connecting strips (611). The lifting frame (2) is provided with a one-way screw driver (62) for driving the moving frame (61) to move back and forth.

5. The coating mechanism for a photovoltaic material according to claim 4, characterized in that, The hot press roller (4) has an air cavity (41) that runs through both ends, and the surface of the hot press roller (4) has a number of air holes (411) along its axial direction.

6. The coating mechanism for a photovoltaic material according to claim 5, characterized in that, A heat-conducting rubber sleeve (42) is fitted on the hot press roller (4), and the heat-conducting rubber sleeve (42) is in contact with the surface of the hot press film (3).

7. The coating mechanism for a photovoltaic material according to claim 1, characterized in that, A first spring (32) is connected between the positioning block (31) and the lifting frame (2). The edge of the lifting frame (2) is provided with a first guide rod (321) extending outward through the first spring (32). The positioning block (31) has a first guide sleeve (322) that is slidably sleeved on the first guide rod (321). The two ends of the first spring (32) are fixedly connected to the lifting frame (2) and the first guide sleeve (322) respectively. The movement direction of the positioning block (31) is parallel to the surface of the lifting frame (2).

8. A coating device for photovoltaic materials, characterized in that, The device includes a conveying mechanism (7), a lifting mechanism, and a coating mechanism for a photovoltaic material as described in any one of claims 1-7. The lifting frame (2) in the coating mechanism is disposed on the lifting mechanism and is located above the conveying mechanism (7). The fixing strip (212) in the coating mechanism is fixedly disposed on the edge of the conveying mechanism (7).

Images