Photovoltaic back film preparation device

Abstract

The utility model discloses a photovoltaic back film preparation device, and belongs to the technical field of photovoltaic back film preparation, the photovoltaic back film preparation device comprises an extruder and a mold roller, the side surface of the extruder is fixedly provided with a support, the support is fixedly provided with a traction motor, the mold roller is fixedly connected with the power end of the traction motor, and the support is also fixedly provided with a T-shaped frame. According to the photovoltaic back film preparation device, a transmission roller is arranged between mold rollers, and a rubber coating wheel for mounting a compression roller piece is in contact with the transmission roller, so that when a photovoltaic back film is extruded and conveyed out, the non-uniformity degree of the thickness of the photovoltaic back film can be monitored and reflected through contact of the rubber coating wheel and movement of a sliding rod connected to a mounting frame; the thickness is accurately reflected through the arranged displacement sensing structure, data are transmitted to the control system, parameters of the extruder are correspondingly adjusted, uniform preparation of the photovoltaic back film is achieved, and the performance and stability of a photovoltaic module are improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic back film preparation, and in particular to a photovoltaic back film preparation device. Background Art

[0002] Photovoltaic back film is an important component of solar photovoltaic cells. Its function is to protect the cells and improve the performance of the cells. The key steps in the preparation of photovoltaic back film include material selection, coating, drying, curing, etc.

[0003] At present, the preparation of photovoltaic back films mostly adopts the traditional extrusion process, and the thickness of the back film is adjusted by controlling the temperature and pressure of the extruder. However, this method requires high skills of the operators and is easily affected by factors such as ambient temperature and humidity, resulting in uneven thickness of the back film.

[0004] Most of the photovoltaic back film preparation devices currently on the market find it difficult to achieve uniform thickness control, resulting in limited performance of photovoltaic modules. In response to this, a photovoltaic back film preparation device is proposed to solve the above-mentioned problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present application provides a photovoltaic back film preparation device, which has the advantages of real-time monitoring of the thickness data of the back film, controlling and adjusting the parameters of the extruder, and improving the preparation uniformity of the photovoltaic back film.

[0006] In summary, the present application provides the following technical solutions: a photovoltaic back film preparation device, comprising an extruder and a mold roller, a bracket is fixedly installed on the side of the extruder, a traction motor is fixedly installed on the bracket, and the mold roller is fixedly connected to the power end of the traction motor;

[0007] The bracket is also fixedly mounted with a T-shaped frame, a transmission roller is rotatably mounted on the T-shaped frame, and a film pressing structure for detecting the uniformity of the thickness of the photovoltaic back film on the surface of the transmission roller is also arranged on the T-shaped frame;

[0008] The film pressing structure comprises a fixing frame fixedly mounted on the T-shaped frame, a pressing roller member located on the fixing frame, and a displacement sensing structure located on the fixing frame.

[0009] By adopting the above technical solution, the thickness of the photovoltaic back film after extrusion can be detected in real time and adjusted accordingly, thereby improving the uniformity and stability of preparation.

[0010] Furthermore, a fixing plate is fixedly installed between the fixing frames, and the pressure roller member includes a mounting frame located on the fixing plate and a rubber-coated wheel rotatably installed on the mounting frame.

[0011] By adopting the above technical solution, contact can be achieved while the photovoltaic back film is being transmitted.

[0012] Furthermore, the mounting frame and the rubber-coated wheels include a plurality of rubber-coated wheels, and the plurality of rubber-coated wheels are arranged along the axial direction of the driving roller.

[0013] By adopting the above technical solution, the effective contact within the width range of the photovoltaic back film can be improved.

[0014] Furthermore, a sliding rod is fixedly installed on the outside of the mounting frame, and the sliding rod is slidably connected to the fixing plate. A sliding hole for the sliding rod to slide is penetrated through the fixing plate, and the cross-sections of the sliding hole and the sliding rod are both plum blossom-shaped.

[0015] By adopting the above technical solution, the rotation and deflection of the sliding rod relative to the sliding hole can be limited.

[0016] Furthermore, both sides of the fixing plate are integrally connected with latches, and the latches penetrate into the interior of the fixing frame.

[0017] By adopting the above technical solution, the stability of the fixing plate can be improved.

[0018] Furthermore, a baffle is fixedly mounted on the bottom of the slide rod, and the diameter of the baffle is larger than the size of the slide hole.

[0019] By adopting the above technical solution, the sliding extension limit distance of the sliding rod relative to the fixed plate is limited.

[0020] Furthermore, a mounting seat is fixedly mounted on the fixing frame, a scale rod is slidably mounted on the mounting seat, and a pressure plate that slides between the fixing plate and the mounting seat is fixedly mounted on the scale rod.

[0021] By adopting the above technical solution, the contact pressure of the rubber-coated wheel can be converted into the synchronous movement of the scale rod.

[0022] Furthermore, the displacement sensing structure includes a displacement sensor fixedly mounted on the scale rod and a data collector fixed on the mounting seat.

[0023] By adopting the above technical solution, data collection can be performed on the displacement activity of the scale rod, thereby facilitating real-time monitoring of the thickness of the photovoltaic back film.

[0024] Furthermore, a first spring is connected between the fixing plate and the mounting frame, and a second spring is arranged between the mounting seat and the pressure plate.

[0025] By adopting the above technical solution, the mounting frame and the pressure plate can be reset.

[0026] The photovoltaic back film preparation device has a transmission roller between mold rollers, and the rubber-coated wheel of the pressure roller member is in contact with the transmission roller, so that when the photovoltaic back film is extruded and transmitted, the uneven thickness of the photovoltaic back film can be monitored and responded to through the contact of the rubber-coated wheel and the movement of the slide bar connected to the mounting frame, and the thickness is accurately responded to through the provided displacement sensing structure, and the data is transmitted to the control system, and the parameters of the extruder are adjusted accordingly, thereby achieving uniform preparation of the photovoltaic back film and improving the performance and stability of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of this application;

[0028] Figure 2 It is a side view structural schematic diagram of the T-frame of the present application;

[0029] Figure 3 It is a structural stereogram of the fixing plate of the present application.

[0030] Description of reference numerals:

[0031] 1. Extruder; 2. Bracket; 3. Traction motor; 4. Die roller; 5. T-frame; 6. Drive roller; 7. Fixed frame; 8. Pressing roller; 81. Rubber-coated wheel; 82. Mounting frame; 83. Slide bar; 84. Baffle; 85. First spring; 9. Fixed plate; 10. Mounting seat; 11. Pressing plate; 12. Scale rod; 13. Second spring; 14. Limiting plate; 15. Data collector; 16. Displacement sensor; 17. Slide hole; 18. Latch. DETAILED DESCRIPTION

[0032] See also Figure 1 The photovoltaic back film preparation device in this embodiment includes an extruder 1 and a mold roller 4. The extruder 1 is interconnected with a control system to control and adjust the preparation pressure parameters of the photovoltaic back film.

[0033] Among them, a bracket 2 is fixedly installed on the side of the extruder 1, a traction motor 3 is fixedly installed on the bracket 2, and the mold roller 4 and the power end of the traction motor 3 are fixedly connected to traction the photovoltaic back film transmission.

[0034] In this embodiment, a T-frame 5 is fixedly mounted on the bracket 2 , a driving roller 6 is rotatably mounted on the T-frame 5 , and a film pressing structure for detecting the uniformity of the thickness of the photovoltaic back film on the surface of the driving roller 6 is also provided on the T-frame 5 .

[0035] See also Figure 2 In this embodiment, the film pressing structure includes a fixing frame 7 fixedly mounted on the T-shaped frame 5, a pressing roller 8 located on the fixing frame 7, and a displacement sensing structure located on the fixing frame 7.

[0036] In a specific implementation, the photovoltaic back film is attached to the surface of the drive roller 6 by the pressure roller 8, thereby responding to the uneven thickness of the photovoltaic back film, and obtaining the thickness through the displacement sensing structure, so that the parameters of the extruder 1 connected to the control system can be adjusted to achieve adjustment of the thickness of the photovoltaic back film.

[0037] A fixing plate 9 is fixedly installed between the fixing frames 7. The pressure roller 8 includes a mounting frame 82 located on the fixing plate 9 and a rubber-coated wheel 81 rotatably installed on the mounting frame 82. The rubber-coated wheel 81 is close to the driving roller 6 for contacting the photovoltaic back film.

[0038] Preferably, the mounting frame 82 and the rubber-coated wheels 81 include a plurality of them, and the plurality of rubber-coated wheels 81 are arranged along the axial direction of the driving roller 6 to contact the uneven raised portions of the photovoltaic back film at different positions.

[0039] Furthermore, a slide bar 83 is fixedly mounted on the outside of the mounting frame 82 , and the slide bar 83 is slidably connected to the fixed plate 9 , so that the relative sliding of the slide bar 83 and the fixed plate 9 can improve the activity stability of the pressure roller 8 .

[0040] See also Figure 3 In this embodiment, a sliding hole 17 is formed through the fixed plate 9 for the sliding rod 83 to slide, and the cross-sections of the sliding hole 17 and the sliding rod 83 are both plum blossom-shaped.

[0041] This design limits the rotation and deflection of the slide rod 83 relative to the slide hole 17, thereby improving the displacement accuracy of the rubber-coated wheel 81 after contacting the photovoltaic back film.

[0042] It should be noted that latches 18 are integrally connected to both sides of the fixing plate 9 , and the latches 18 penetrate into the interior of the fixing frame 7 to improve the stability of the fixing plate 9 .

[0043] See also Figure 2 In this embodiment, a baffle 84 is fixedly mounted on the bottom of the slide rod 83. The diameter of the baffle 84 is larger than the size of the slide hole 17, so that the sliding extension limit distance of the slide rod 83 relative to the fixed plate 9 is limited.

[0044] In addition, a first spring 85 is connected between the fixing plate 9 and the mounting frame 82 , one end of the first spring 85 is fixedly connected to the fixing plate 9 , and the other end is fixedly connected to the outside of the mounting frame 82 , and the first spring 85 is located outside the slide rod 83 .

[0045] By pushing the mounting frame 82 through the first spring 85 , the rubber-coated wheel 81 rotating on the mounting frame 82 can be in stable contact with the photovoltaic back film on the driving roller 6 .

[0046] See also Figure 2In this embodiment, a mounting seat 10 is fixedly installed on the fixing frame 7, a scale rod 12 is slidably installed on the mounting seat 10, and a pressure plate 11 that slides between the fixing plate 9 and the mounting seat 10 is fixedly installed on the scale rod 12. At this time, the rubber-coated wheel 81 contacts the uneven surface of the photovoltaic back film to squeeze the sliding rod 83 to push the pressure plate 11 to slide.

[0047] Furthermore, a second spring 13 is provided between the mounting seat 10 and the pressing plate 11 , one end of the second spring 13 is fixedly connected to the mounting seat 10 , and the other end is fixedly connected to the pressing plate 11 , and the second spring 13 can push the pressing plate 11 to reset.

[0048] In this embodiment, the displacement sensing structure includes a displacement sensor 16 fixedly mounted on the scale rod 12 and a data collector 15 fixed on the mounting base 10, wherein the data collector 15 is used to collect the displacement activity of the displacement sensor 16 to monitor the unevenness of the photovoltaic back film.

[0049] It is additionally explained that a limit plate 14 is fixedly mounted on the scale rod 12 , the limit plate 14 is used to limit the activity limit position of the pressure plate 11 , and the displacement sensor 16 is fixed on the limit plate 14 .

[0050] The working principle of the above embodiment is:

[0051] The raw material is extruded into a film through the extruder 1 and formed through the mold roller 4. The photovoltaic back film transmitted from the mold roller 4 is transmitted through the transmission roller 6. At this time, the first spring 85 pushes the mounting frame 82 to roll together with the rubber-coated wheel 81 on the surface of the photovoltaic back film. When the molding thickness is uneven at any place of the photovoltaic back film, the rubber-coated wheel 81 in contact with this place will squeeze the first spring 85 with the mounting frame 82, and make the sliding rod 83 on the other side of the mounting frame 82 extend to the bottom of the fixed plate 9 to squeeze the pressure plate 11. After being squeezed, the pressure plate 11 can squeeze the second spring 13, and make the scale rod 12 connected to the pressure plate 11 displaced relative to the mounting seat 10. The displacement at this time is collected by the displacement sensor 16, and the data is transmitted to the control system through the data collector 15. The pressure and temperature parameters of the extruder 1 are adjusted by the control system to ensure that the thickness of the processed photovoltaic back film is uniform.

Claims

1. A photovoltaic back film preparation device, comprising an extruder (1) and a mold roller (4), characterized in that: A bracket (2) is fixedly mounted on the side of the extruder (1), a traction motor (3) is fixedly mounted on the bracket (2), and the mold roller (4) is fixedly connected to the power end of the traction motor (3); A T-shaped frame (5) is also fixedly mounted on the support (2), a driving roller (6) is rotatably mounted on the T-shaped frame (5), and a film pressing structure for detecting the uniformity of the thickness of the photovoltaic back film on the surface of the driving roller (6) is also provided on the T-shaped frame (5); The film pressing structure comprises a fixing frame (7) fixedly mounted on the T-shaped frame (5), a pressing roller (8) located on the fixing frame (7), and a displacement sensing structure located on the fixing frame (7).

2. The photovoltaic back film preparation device according to claim 1, characterized in that: A fixing plate (9) is fixedly mounted between the fixing frames (7), and the pressing roller member (8) comprises a mounting frame (82) located on the fixing plate (9) and a rubber-coated wheel (81) rotatably mounted on the mounting frame (82).

3. The photovoltaic back film preparation device according to claim 2, characterized in that: The mounting frame (82) and the rubber-coated wheels (81) include a plurality of them, and the plurality of rubber-coated wheels (81) are arranged along the axial direction of the driving roller (6).

4. The photovoltaic back film preparation device according to claim 3, characterized in that: A sliding rod (83) is also fixedly mounted on the outside of the mounting frame (82), and the sliding rod (83) is slidably connected to the fixing plate (9). A sliding hole (17) is formed through the fixing plate (9) for the sliding rod (83) to slide, and the cross-sections of the sliding hole (17) and the sliding rod (83) are both plum blossom-shaped.

5. The photovoltaic back film preparation device according to claim 2, characterized in that: Latch pins (18) are also integrally connected to both sides of the fixing plate (9), and the latch pins (18) penetrate into the interior of the fixing frame (7).

6. The photovoltaic back film preparation device according to claim 4, characterized in that: A baffle (84) is also fixedly mounted on the bottom of the slide rod (83), and the diameter of the baffle (84) is larger than the size of the slide hole (17).

7. The photovoltaic back film preparation device according to claim 2, characterized in that: A mounting seat (10) is also fixedly mounted on the fixing frame (7), a scale rod (12) is slidably mounted on the mounting seat (10), and a pressure plate (11) is fixedly mounted on the scale rod (12) and slides between the fixing plate (9) and the mounting seat (10).

8. The photovoltaic back film preparation device according to claim 7, characterized in that: The displacement sensing structure comprises a displacement sensor (16) fixedly mounted on the scale rod (12) and a data collector (15) fixed on the mounting seat (10).

9. The photovoltaic back film preparation device according to claim 7, characterized in that: A first spring (85) is also connected between the fixing plate (9) and the mounting frame (82), and a second spring (13) is provided between the mounting seat (10) and the pressing plate (11).

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