A method of positioning and securing a thin film on glass

Abstract

The present application provides a method for positioning and fixing a film on a glass, which employs a device including a glass conveying device, a film covering device and a positioning and fixing device; the positioning and fixing device is located above the second station and includes a film position detecting mechanism, a film position adjusting mechanism and a film position fixing mechanism; the film position adjusting mechanism includes four suction cups, and the four suction cups are respectively located above the four corners of the film. In the method of the present application, the position adjusting is that the four suction cups first only suck the four corners of the film and slightly separate the film from the glass, and in the state that the film is mostly covered on the glass, the position of the four suction cups is moved to drive the film to slide on the glass, so that no air enters between the film and the glass, and the film on the glass after the position adjusting is kept flat and no bubbles and wrinkles are generated.

Description

Technical Field

[0001] This invention belongs to the technical field of solar cell module manufacturing equipment, and particularly relates to a device for positioning and fixing EVA film onto a glass plate. Background Technology

[0002] Solar cell modules are the core components in photovoltaic power generation, converting solar energy into electrical energy. EVA film is a key material used for encapsulating solar cell modules. During the encapsulation process, manufacturers need to use butyl rubber to seal and prevent water damage in double-glass solar cell modules. Since the EVA film is inside the butyl rubber and requires very high positioning accuracy, precise positioning of the EVA film is necessary. Because the friction between the EVA film and the photovoltaic glass is very low, the positioned EVA film can shift during transport on the conveyor, necessitating fixing the EVA film to the glass.

[0003] Positioning and fixing EVA film onto glass involves several steps: covering the glass with the film, venting air, detecting the position of the EVA film on the glass, adjusting the position of the EVA film based on the detection results, and finally fixing the EVA film onto the glass. However, due to the soft and thin nature of EVA film, adjusting its position on the glass is a technical challenge. Slight errors can easily result in unevenness, bubbles, and wrinkles on the EVA film. For example, some manufacturers have attempted to use dozens of suction cups to lift the entire EVA film to adjust its position. This method, however, causes the EVA film to separate from the glass. When the film is placed back on the glass after adjustment, air can enter between the film and the glass, leading to bubbles and wrinkles, ultimately resulting in an uneven EVA film on the glass. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method for positioning and fixing a thin film on glass. When adjusting the position of the EVA film on the glass, the method can ensure that air does not enter between the film and the glass, so as to ensure that the film on the glass is flat and that there are no bubbles or wrinkles.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A method for positioning and fixing a thin film on glass includes a glass conveying device, a coating device, and a positioning and fixing device. The glass conveying device has a first station and a second station along the glass conveying direction. The coating device is located above the first station. The positioning and fixing device is located above the second station and includes a film position detection mechanism, a film position adjustment mechanism, and a film position fixing mechanism. The steps of the method are as follows:

[0007] S1. The glass conveying device conveys the glass to the first workstation.

[0008] S2. At the first work station, the coating device covers the glass with the film;

[0009] S3. The glass conveying device conveys the film-coated glass to the second work station;

[0010] S4. At the second workstation, the film position detection mechanism, the film position adjustment mechanism, and the film position fixing mechanism sequentially perform position detection, position adjustment, and position fixing on the film on the glass:

[0011] The film position adjustment mechanism includes four suction cups, which are respectively located above the four corners of the film. In step S4, the position is adjusted such that the four suction cups first lift only the four corners of the film and slightly separate them from the glass. While the film is still mostly covered by the glass, the position of the four suction cups is moved to drive the film to slide on the glass.

[0012] In the above technical solution, during position adjustment, only a few corners of the film are held by four suction cups, allowing the four corners of the film to be slightly separated from the glass, while the majority of the film remains on the glass. There is no gap between the film and the glass, so air cannot enter between them. Furthermore, when the four corners are lowered, since they are at the very edges of the film, air can easily escape. Therefore, the method of the present invention ensures that no air enters between the film and the glass during film position adjustment, guaranteeing that the glass remains flat after position adjustment and that no bubbles or wrinkles appear.

[0013] In a specific embodiment of the present invention, the film position adjustment mechanism further includes four translation drive devices, each of which is equipped with a corresponding suction cup. Each translation drive device includes a transverse linear module for driving the suction cup to move laterally and a longitudinal linear module for driving the suction cup to move longitudinally. Each translation drive device independently drives the suction cup mounted on it to translate, and the relative positions of the four suction cups do not change during the translation process. Because each translation drive device independently drives one suction cup, the translation drive device can be made small and simple, and the entire film position adjustment mechanism has a simple structure and low manufacturing cost. The requirement that the relative positions of the newspapers remain unchanged during the translation process ensures that only the film position is adjusted without causing the film to be stretched or deformed.

[0014] In a specific embodiment of the present invention, the film position adjustment mechanism further includes a lifting module for raising and lowering the four suction cups, and the four translation drive devices are mounted on the lifting module. This structure allows the suction cups to descend and hold the four corners of the film, and to rise and slightly separate the four corners of the film from the glass.

[0015] In a specific embodiment of the present invention, the coating device pulls the film from the side of the glass conveying device and places it onto the upper surface of the glass. The film is transferred onto the glass by pulling; during this process, the airflow beneath the film flattens it out, resulting in a very smooth film that ultimately lands on the glass. Even if wrinkles or bubbles occur, they are extremely rare.

[0016] In a specific embodiment of the present invention, a rolling exhaust device is also provided between the film coating device and the positioning and fixing device. The glass conveying device passes through the rolling exhaust device during the process of conveying the film coated from the first station to the second station. The rolling exhaust device uses a pressure roller to roll on the film to smooth the film and squeeze out the air between the film and the glass.

[0017] In a specific embodiment of the present invention, the film positioning mechanism comprises multiple ultrasonic welding guns distributed above the second workstation. In step S4, the positioning is achieved by the ultrasonic welding guns ultrasonically spot-welding the film onto the glass. Using spot welding to fix the film onto the glass offers advantages such as a simple film positioning mechanism, low manufacturing cost, and, more importantly, speed, efficiency, and high effectiveness.

[0018] The thin film position detection mechanism consists of four industrial cameras, each positioned above one of the four corners of the thin film. In step S4, the position detection involves the four industrial cameras capturing images of the four corners of the thin film to determine its position on the glass. This invention uses image capture of the four corners of the thin film to detect its position, offering advantages such as a simple detection mechanism structure and high detection accuracy.

[0019] Therefore, by adopting the above technical solution, the method of the present invention will not allow air to enter during the adjustment of the film position, which has the advantages of ensuring that the film on the glass remains flat after the position adjustment and will not have bubbles or wrinkles. Furthermore, the use of ultrasonic spot welding to fix the film position has the advantages of simple fixing method and high fixing efficiency. Moreover, this method makes the overall structure of the equipment simple, the manufacturing cost low, and easy to promote and apply. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the device of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the first transmission belt device of the present invention;

[0022] Figure 3 This is a structural schematic diagram of the first conveyor belt device of the present invention from another perspective;

[0023] Figure 4 This is a structural schematic diagram of the first conveyor belt device of the present invention from another perspective;

[0024] Figure 5 This is a schematic diagram of the coating device of the present invention;

[0025] Figure 6 This is a schematic diagram of the translation drive device of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the rolling exhaust device of the present invention;

[0027] Figure 8 This is a partial schematic diagram of the swing mechanism of the present invention. Detailed Implementation

[0028] like Figure 1 As shown, the equipment used in the method for positioning and fixing a film on glass according to the present invention includes a glass conveying device 100, a film coating device 200, a positioning and fixing device 300, and a rolling and venting device 400.

[0029] In a specific embodiment of the present invention, the film mentioned in the present invention is an EVA film, that is, the method of the present invention can position and fix the EVA film on the glass.

[0030] The method for positioning and fixing a thin film on glass according to the present invention includes the following steps:

[0031] S1. The glass conveying device 100 conveys the glass to the first station 1;

[0032] S2. At the first station 1, the coating device 200 covers the glass with a film;

[0033] S3. The glass conveying device 100 conveys the film-coated glass to the second station 2. During the conveying process, the film-coated glass passes through the rolling and venting device 400. The rolling and venting device 400 uses a pressure roller to roll the film to smooth it out and squeeze out the air between the film and the glass.

[0034] S4. At the second work station 2, the positioning and fixing device 300 sequentially performs position detection, position adjustment and position fixing on the film on the glass.

[0035] Specifically, the glass conveying device 100 includes a first transmission belt device 110 and a second transmission belt device 120 sequentially along the glass conveying direction. The first transmission belt device 110 forms a first station 1 for covering the film onto the glass, and the second transmission belt device 120 forms a second station 2 for positioning and fixing the film onto the glass.

[0036] The first transmission belt device 110 and the second transmission belt device 120 have the same structure, such as Figures 2 to 4 As shown, each includes four spaced transmission belt mechanisms 101 synchronously driven by a motor, and a glass positioning mechanism 130 disposed in the transmission belt mechanism 101.

[0037] The conveyor belt mechanism 101 includes a conveyor belt frame 1011, a main pulley 1012 and a driven pulley 1013 respectively located at the front and rear ends of the conveyor belt frame 1011, and a conveyor belt 1014 sleeved on the main pulley 1012 and the driven pulley 1013. The conveyor belt frame 1011 is located in the conveyor belt 1014 and provides support for the belt body running above the conveyor belt frame 1011. The main pulleys 1012 of the four conveyor belt mechanisms 101 are all mounted on a drive shaft 1015. A drive motor 1016 for driving the drive shaft 1015 is fixed on one of the outermost conveyor belt frames 1011, thereby realizing synchronous driving of all conveyor belts 1014.

[0038] The glass positioning mechanism 130 includes a support frame 131 located below the transmission belt mechanism 101 and a left positioning wheel assembly 132, a right positioning wheel assembly 133, a front positioning wheel assembly 134, and a rear positioning wheel assembly 135 mounted on the support frame 131.

[0039] The left positioning wheel assembly 132 and the right positioning wheel assembly 133 are arranged opposite to each other on both sides of the transmission belt mechanism 101. Each includes a longitudinal position adjustment mechanism 10 mounted on the support frame 131, a longitudinal positioning drive mechanism 20 mounted on the longitudinal position adjustment mechanism 10, and two longitudinal stop wheels 30 mounted on the longitudinal positioning drive mechanism 20.

[0040] The longitudinal position adjustment mechanism 10 includes two longitudinal position slide rails 11 fixed parallel to each other on the support frame 131 (i.e., in a direction perpendicular to the transmission direction of the drive belt 1014), a longitudinal position slide plate 12 spanning the two longitudinal position slide rails 11, a longitudinal adjustment screw 13 fixed on the support frame 131, a longitudinal adjustment nut fixed to the bottom of the longitudinal position slide plate 12 and fitted onto the longitudinal adjustment screw 13, and a longitudinal adjustment handwheel 14 fixed to the end of the longitudinal adjustment screw 13. A longitudinal position clamp 15 is also fixed on the support frame 131, located next to the end of the longitudinal adjustment screw 13. The longitudinal position clamp 15 is used to clamp and fix the longitudinal adjustment screw 13 after the longitudinal position slide plate 422 is adjusted to the correct position.

[0041] The longitudinal positioning drive mechanism 20 includes two longitudinal drive slide rails 21 that are longitudinally parallel and fixed on the longitudinal position slide plate 12, a longitudinal drive slide plate 22 spanning the two longitudinal drive slide rails 21, and a longitudinal drive cylinder 23 fixed on the longitudinal position slide plate 12 and connected to the longitudinal position slide plate 22.

[0042] Two vertical guide roller support rods 24 are fixed laterally on the longitudinal drive slide plate 22. A longitudinal guide roller 30 is mounted at the top of each guide roller support rod 24. The height of the longitudinal guide roller 30 should slightly exceed the upper surface of the conveyor belt 1014.

[0043] The front positioning wheel assembly 134 and the rear positioning wheel assembly 135 are arranged opposite each other at a distance below the transmission belt mechanism 101. Each assembly includes a lateral position adjustment mechanism 40 mounted on the support frame 131, a lateral positioning drive mechanism 50 mounted on the lateral position adjustment mechanism 40, a lifting drive mechanism 60 mounted on the lateral positioning drive mechanism 50, and a lateral stop wheel 70 mounted on the lifting drive mechanism 60.

[0044] The lateral position adjustment mechanism 40 includes two lateral position slide rails 41 fixed parallel to each other on the support frame 131 (i.e., in the same direction as the transmission direction of the drive belt 1014), a lateral position slide plate 42 spanning the two lateral position slide rails 41, a lateral adjustment screw 43 fixed on the support frame 131, a lateral adjustment nut fixed to the bottom of the lateral position slide plate 42 and fitted onto the lateral adjustment screw 43, and a lateral adjustment handwheel 44 fixed to the end of the lateral adjustment screw 43. A lateral position clamp 45 is fixed on the support frame 131 next to the end of the lateral adjustment screw 43. The lateral position clamp 45 is used to clamp and fix the lateral adjustment screw 43 after the lateral position slide plate 42 is adjusted.

[0045] The lateral positioning drive mechanism 50 includes two lateral drive slide rails 51 that are laterally parallel and fixed on the lateral position slide plate 42, a lateral drive slide plate 52 spanning the two lateral drive slide rails 51, and a lateral drive cylinder 53 fixed on the lateral position slide plate 42 and connected to the lateral drive slide plate 52.

[0046] The lifting drive mechanism 60 consists of lifting drive cylinders 61 fixed at both ends of the transverse drive slide plate 52, and a transverse retaining wheel 70 is fixed to the upper end of the piston rod of each lifting drive cylinder 61.

[0047] In the first transmission belt device 110 and the second transmission belt device 120 described above, the initial distance between the longitudinal stop roller in the left positioning roller assembly 411 and the longitudinal stop roller in the right positioning roller assembly 412 can be adjusted by operating the longitudinal adjustment handwheel 424, and the initial distance between the lateral stop roller in the front positioning roller assembly 413 and the lateral stop roller in the rear positioning roller assembly 414 can be adjusted by operating the lateral adjustment handwheel 454, so as to accommodate glass of different length and width dimensions being conveyed to the work station.

[0048] When glass is conveyed to the first workstation by the first conveyor belt device 110, or when film-coated glass is conveyed to the second workstation by the second conveyor belt device 120, in the aforementioned left positioning wheel assembly 132 and right positioning wheel assembly 133, the longitudinal drive cylinder 23 drives the longitudinal stop wheel 30 to move towards the center to stop the left and right edges of the glass, thereby achieving longitudinal positioning of the glass. In the aforementioned front positioning wheel assembly 134 and rear positioning wheel assembly 135, the lifting drive cylinder 61 drives the transverse stop wheel 70 to rise, and then the transverse drive cylinder 53 drives the transverse stop wheel to move towards the center to stop the front and rear edges of the glass, thereby achieving transverse positioning of the glass.

[0049] During glass conveying, the longitudinal drive cylinder 23 drives the longitudinal stop roller 30 to avoid contact with the left and right edges of the glass, and the transverse drive cylinder 53 drives the transverse stop roller 70 to avoid contact with the front and rear edges of the glass. The lifting drive cylinder 61 drives the transverse stop roller 70 to descend below the upper surface of the conveyor belt 1014. This allows the glass to be conveyed on the conveyor belt 1014 without being obstructed by the stop rollers at the front, rear, left, and right positions.

[0050] Multiple horizontal support rods 1015 arranged along the conveying direction are fixed to the outer walls of the two outer conveyor belt frames 1011, with a support roller 1016 at the end of each horizontal support rod. This provides support for the left and right edges of the glass, making the glass conveying more stable.

[0051] For example Figure 1 Combination Figure 5 As shown, the coating device 200 is positioned above the first workstation 1 and includes a support frame 201, pull rails 210 mounted on the longitudinal beams on both sides of the support frame 201, and a pull beam 220 spanning the two pull rails 210. A gap exists between the support frame 201 and the first transmission belt device 110 to allow the glass to pass through during transport.

[0052] The pull track 210 is perpendicular to the conveying direction of the conveyor belt 1014. Synchronous belts 230 are installed on the inner walls of the longitudinal beams 2011 on both sides of the support frame 201. Movable slides 211, slidably mounted on the pull track 210, are connected to both ends of the pull beam 220, and these movable slides 211 are also connected to the synchronous belts 230. A pull motor 231 for driving the synchronous belts 230 is also fixed on the support frame 201. A row of transversely spaced film clamps 240 are provided on the pull beam 200. In this embodiment, the film clamps 240 are pneumatic clamps.

[0053] The coating process in step 1 of the coating device 200 is as follows: After the glass is conveyed to the first station 1 by the first conveyor belt device 110 and positioned by the glass positioning mechanism 130, the pulling beam 220 in the coating device 200, driven by the pulling motor 231, clamps one edge of the single film cut from the film cutting device (located next to the glass conveying device, not shown in the figure, which cuts the film roll into a single film sheet) through the film clamping nozzle 240, pulling the film above the glass. Then the film clamping nozzle 240 is released, allowing the film to fall freely onto the glass. Because the coating device 200 uses a pulling method to transfer and place the film onto the glass, the airflow below the film during the pulling process will flatten the film, resulting in a very flat film that finally falls onto the glass. Even if wrinkles and bubbles occur, they are extremely few.

[0054] For example Figure 1As shown, the positioning and fixing device 300 is set above the second station 2, including a fixing bracket (not shown in the figure) and a film position detection mechanism 310, a film position adjustment mechanism 320 and a film fixing mechanism 330 set on the fixing bracket.

[0055] The thin film position detection mechanism 310 consists of four industrial cameras 311 fixed on a fixed bracket. These four industrial cameras 311 are respectively arranged above the four corners of the corresponding thin film, and the position of the thin film on the glass is determined by capturing the position of the four corners of the thin film.

[0056] The film position adjustment device 320 includes a lifting module fixed on a fixed bracket, four translation drive devices 321 respectively installed at the four corners of the lifting module, and a suction cup 322 installed on each translation drive device 321. Specifically, the lifting module includes a suction cup lifting drive cylinder and a suction cup fixing frame installed on the lifting cylinder. The four translation drive devices 321 are respectively installed at the four corners of the suction cup fixing frame, and are located above the four corners of the film.

[0057] Combination Figure 6 As shown, the translation drive device 321 includes a transverse linear module 3211 fixed on a suction cup holder, a longitudinal linear module 3212 connected to a slider of the transverse linear module 3211, and a suction cup support plate 3213 connected to a slider of the longitudinal linear module 3212. The suction cup 322 is fixed on the suction cup support plate 3213.

[0058] In this embodiment, both the transverse linear module 3211 and the longitudinal linear module 3212 are motor-driven linear modules, which have the advantage of precise movement.

[0059] For example Figure 1 As shown, in this invention, the film fixing mechanism 330 includes a welding torch lifting frame (not shown) mounted on a fixed bracket and six ultrasonic welding torches 331 mounted on the welding torch lifting frame. The six ultrasonic welding torches 331 are arrayed above the film. After the film position adjustment device 320 adjusts the film's position on the glass, the six ultrasonic welding torches 331 descend under the drive of the welding torch lifting frame, contacting the film and fixing it to the glass via ultrasonic spot welding. In this invention, using ultrasonic spot welding to fix the glass to the glass has the advantages of simple structure and high fixing efficiency.

[0060] In this invention, the four suction cups 322 are respectively arranged above the four corners of the film. When the film position detection mechanism 310 detects that the film is not positioned correctly on the glass, the controller of the device calculates the direction and distance between the current position point of the four corners of the film and the target position point, thereby obtaining the adjustment position movement trajectory of the four corners of the film. Then, the lifting module in the film position adjustment mechanism 320 first drives the four suction cups 322 to descend and suck up the four corners of the film, and then drives the four suction cups to rise, so that the four suction cups 322 suck up the four corners of the film and slightly separate them from the glass. At this time, most of the film is still covering the glass. Then, the horizontal linear module 3211 and the vertical linear module 3212 of each translation drive device 321 drive the suction cups to move synchronously according to the adjustment position movement trajectory of the four corners of the film, thereby causing the film to slide on the glass to adjust the film position. However, the relative positions of the four suction cups do not change during the movement.

[0061] Once the film is positioned correctly on the glass, the film fixing mechanism 330 fixes the film onto the glass.

[0062] In this invention, such as Figure 1 and combined Figure 7 , Figure 8 As shown, the rolling exhaust device 400 is located at the tail end of the first conveyor belt device 110, and includes a support roller 401 spaced on the drive shaft 1015, a pressure roller 402 located above the support roller 401, and a swing mechanism 410 that drives the pressure roller 402 to swing up and down.

[0063] There are two swing mechanisms 410, each connected to one end of the pressure roller 402. Each swing mechanism 410 includes a swing cylinder 411, a bearing seat 412, and a swing rod 413. The swing cylinder 411 and bearing seat 412 are both mounted on the longitudinal support beam 403 above the tail end of the first conveyor belt device 110. The swing rod 412 is an L-shaped rod, with its middle portion mounted on the bearing seat 412 via a shaft 414, and its lower end sleeved on the shaft head at the end of the pressure roller 402 via a bearing. A roller 414 is connected to the piston rod of the swing cylinder 411, and this roller 414 is located in front of the upper end of the swing rod 412. The swing cylinder 411 drives the roller 414 to move backward to pull the upper end of the swing rod 412, causing the pressure roller 102 to tilt upward with the bearing seat 412 as the fulcrum to increase the gap between it and the support roller 401. This allows the front edge of the film-coated glass to enter the gap first. Then, the swing cylinder 411 drives the roller 414 forward to release the end of the swing rod 413, so that the pressure roller 102 presses the film under its own weight. As the film-coated glass is conveyed to the first station 2, the pressure roller 402 rolls on the film to smooth it out and remove the air between the film and the glass. This ensures that the film on the film-coated glass is flat and free of bubbles and wrinkles before it reaches the second station.

[0064] The above describes the device and method for positioning and fixing a thin film on glass according to the present invention. It prevents air from entering during film position adjustment, ensuring the film remains flat on the glass after adjustment and is free from bubbles and wrinkles. Furthermore, the use of ultrasonic spot welding for film position fixing offers advantages such as simplicity and high efficiency. This method also results in a simple overall device structure, low manufacturing cost, and ease of widespread application.

[0065] In addition to positioning and fixing EVA film onto glass, the method of the present invention is also applicable to positioning and fixing other films onto glass.

Claims

1. A method for positioning and fixing a film on glass, using equipment including a glass conveying device, a coating device, and a positioning and fixing device, wherein the glass conveying device has a first station and a second station along the glass conveying direction, the coating device is located above the first station; the positioning and fixing device is located above the second station and includes a film position detection mechanism, a film position adjustment mechanism, and a film position fixing mechanism, the method comprising the following steps: S1. The glass conveying device conveys the glass to the first workstation. S2. At the first work station, the coating device covers the glass with the film; S3. The glass conveying device conveys the film-coated glass to the second work station; S4. At the second workstation, the film position detection mechanism, the film position adjustment mechanism, and the film position fixing mechanism sequentially perform position detection, position adjustment, and position fixing on the film on the glass, characterized in that: The film position adjustment mechanism includes four suction cups, which are respectively located above the four corners of the film. In step S4, the position is adjusted such that the four suction cups first lift only the four corners of the film and slightly separate them from the glass. While the film is still mostly covered by the glass, the position of the four suction cups is moved to drive the film to slide on the glass.

2. The method for positioning and fixing a thin film on glass according to claim 1, characterized in that: The film position adjustment mechanism also includes four translation drive devices, each of which is equipped with a corresponding suction cup. Each translation drive device includes a horizontal linear module that drives the suction cup to move laterally and a vertical linear module that drives the suction cup to move longitudinally. Each translation drive device independently drives the suction cup mounted on it to move, and the relative positions of the four suction cups do not change during the translation process.

3. The method for positioning and fixing a thin film on glass according to claim 2, characterized in that: The film position adjustment mechanism also includes a lifting module for raising and lowering the four suction cups, and the four translation drive devices are mounted on the lifting module.

4. The method for positioning and fixing a thin film on glass according to claim 1, characterized in that: In step S2, the coating device pulls and places the film onto the upper surface of the glass by clamping one edge of the film.

5. The method for positioning and fixing a thin film on glass according to claim 1, characterized in that, A rolling venting device is also provided between the coating device and the positioning and fixing device. The glass conveying device passes through the rolling venting device during the process of conveying the coated glass from the first station to the second station. The rolling venting device uses a pressure roller to roll the film to smooth the film and squeeze out the air between the film and the glass.

6. The method for positioning and fixing a thin film on glass according to claim 1, characterized in that: The film position fixing mechanism consists of multiple ultrasonic welding guns distributed above the second work station. In step S4, the position fixing is the ultrasonic welding guns ultrasonically spot welding the film onto the glass.

7. The method for positioning and fixing a thin film on glass according to claim 1, characterized in that: The thin film position detection mechanism consists of four industrial cameras, which are respectively located above the four corners of the thin film. In step S4, the position detection is to determine the position of the thin film on the glass by taking pictures of the four corners of the thin film by the four industrial cameras.

8. The method for positioning and fixing a thin film on glass according to claim 1, characterized in that: The glass conveying device has glass positioning mechanisms at the first station and the second station for positioning the glass.

9. The method for positioning and fixing a thin film on glass according to claim 4, characterized in that: The coating device pulls the film from the side of the glass conveying device and places it onto the upper surface of the glass.

Images