EVA (Ethylene Vinyl Acetate) adhesive film cutting device for photovoltaic module
By designing an EVA film cutting device for photovoltaic modules with a stepper motor, an output motor and a pneumatic rod, the problem of difficulty in cutting unconventional shaped EVA films in the existing technology is solved, achieving a more efficient and more efficient Precise cutting results.
Patent Information
- Application Number
- CN202420805353.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-04-18
AI Technical Summary
The existing mechanical cutting machines are difficult to deal with unconventional shapes of EVA films, and the high cost of laser cutting machines and deformation and burning problems of the rear edge of the cutting lead to low cutting efficiency and accuracy.
An EVA film cutting device for photovoltaic modules is designed. It uses a stepper motor and an output motor to drive the threaded rod and cutter. The cutter is driven by the driving gear and the driven gear for angle adjustment. Combined with the use of pneumatic rods and fans, Realize automatic cutting of EVA films of different shapes and lengths.
It improves the diversity and versatility of EVA film cutting, avoids the limitations of the cutter, improves cutting efficiency and precision, and reduces the labor intensity of operators.
Smart Images
Figure CN222371682U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of EVA film processing, in particular to an EVA film cutting device for photovoltaic components. Background Art
[0002] EVA film is an important material in photovoltaic modules. Its full name is ethylene-vinyl acetate copolymer film. It is usually used as a packaging material for photovoltaic cells, bonding the cells to glass or backplanes to protect the cells, isolate moisture and air, and improve the durability of the modules and the photoelectric conversion efficiency.
[0003] The overall area of the produced EVA film will be larger than the area of the battery cell of the photovoltaic module. Therefore, before the EVA film is attached to the surface of the battery cell, it needs to be cut according to the area of the battery cell. Special cutting equipment is usually used to cut the EVA film. These devices can be mechanical cutters, laser cutters or die cutters. Different cutting equipment is suitable for cutting needs of different sizes and shapes, as well as different production efficiency and precision requirements. Generally, mechanical cutters are used more. Mechanical cutters are a traditional cutting method that uses a knife for cutting. It can be manually operated, semi-automatic or fully automatic. Mechanical cutters are suitable for mass production and can quickly cut straight lines or simple shapes.
[0004] However, mechanical cutters on the market can generally only cut EVA films, but the shape of the cells of some photovoltaic modules will change with the shape of the photovoltaic panel, which results in that the shapes of some EVA films are not conventional rectangles, which is difficult for general mechanical cutters to do. Even if the laser cutter can cut the EVA film into a set shape according to the set shape, the cost of the laser cutter is high. At the same time, the principle of the laser cutter is to use a high-temperature laser to cut the material, but the EVA film is not resistant to high temperature and flame retardant. The edges of the EVA film cut by laser are prone to deformation and burning, and the operator needs to manually cut the edges later, which not only reduces the cutting efficiency, but also increases the labor intensity of the operator. In view of this, an EVA film cutting device for photovoltaic modules is provided to overcome the above defects. Utility Model Content
[0005] The utility model aims to solve the shortcomings in the prior art and proposes an EVA film cutting device for photovoltaic components.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an EVA film cutting device for photovoltaic components, comprising an operating table, a hollow seat is fixedly connected to the top of the left and right sides of the top of the operating table, a stepper motor is fixedly connected to the front end surface of the hollow seat, a threaded rod is fixedly connected to the output end of the stepper motor, a moving block is spirally connected to the outer side of the threaded rod, a connecting plate is fixedly connected to the top of the moving block, a top plate is fixedly connected to the top of the connecting plate, a pneumatic rod is fixedly connected to the top of the top plate, a fixed disk is fixedly connected to the output end of the pneumatic rod, a rotating shaft is rotatably connected to the lower middle of the fixed disk, a driven gear is fixedly connected to one end of the rotating shaft away from the fixed disk, a cutter is fixedly connected to the middle of the bottom of the driven gear, an output motor is fixedly connected to the front side of the top of the fixed disk, an output shaft is fixedly connected to the output end of the output motor, and a driving gear is fixedly connected to one end of the output shaft away from the output motor.
[0007] As a further description of the above technical solution: the rear top end of the threaded rod is rotatably connected to the middle of the rear interior of the hollow seat, the outer side of the movable block is slidably connected to the inner wall of the hollow seat, the outer side of the lower side of the connecting plate is slidably connected to the upper part of the hollow seat, the top of the fixed plate is in contact with the top plate, and the rear outer side of the driving gear is meshed with the front outer side of the driven gear. It can be automatically adjusted according to the shape and cutting route of different cut EVA films, thereby improving the diversity and versatility of cutting EVA films to a certain extent.
[0008] As a further description of the above technical solution: a turntable is arranged at the bottom of the driven gear, and the turntable is arranged inside the fixed disk and is rotatably connected to the fixed disk. An annular groove is opened in the middle of the fixed disk, and the diameter of the annular groove in the middle of the fixed disk matches the cross-sectional diameter of the turntable, so that the output motor can drive the driven gear to rotate, thereby achieving the purpose of rotating the cutter.
[0009] As a further description of the above technical solution: the stepper motor and the output motor can both rotate forward and reverse, a groove is provided on the top of the hollow seat, the length of the groove on the top of the hollow seat matches the length of the threaded rod, and the width of the groove on the top of the hollow seat matches the left and right length of the moving block as a whole, so that the pneumatic rods and the fixed plate at the top and bottom of the top plate can move back and forth above the operating table to achieve the purpose of cutting EVA films of different lengths.
[0010] As a further description of the above technical solution: the distance between the two hollow seats on the top of the operating table matches the overall cross-sectional diameter of the fixed disk, and the length of the cutter matches the overall cross-sectional diameter of the fixed disk, a circular groove is opened in the middle of the top of the top plate, and the diameter of the circular groove in the middle of the top of the top plate matches the bottom diameter of the output end of the pneumatic rod, the pneumatic rod drives the fixed disk and the cutter to move downward, and performs downward pressure cutting on the EVA film in the middle of the top of the operating table.
[0011] As a further description of the above technical solution: discharge troughs are opened on the left and right sides of the top of the operating table, a fan is fixedly connected to the middle of the rear top of the top plate, a bellows is fixedly connected to the rear output end of the fan, and an air outlet plate is fixedly connected to the end of the bellows away from the fan.
[0012] As a further description of the above technical solution: the discharge trough is distributed on the inner side of the two hollow seats, and the length of the discharge trough is the same as the length of the hollow seat. The wind blown out by the fan is blown downward through the bellows. The interior of the air outlet plate is hollow, and a number of circular through holes with a diameter of five millimeters are opened at the bottom of the air outlet plate. It not only blows away the EVA film debris on the surface of the operating table, but also suppresses the top of the EVA film to be cut to a certain extent, thereby avoiding the deviation of the EVA film during cutting.
[0013] The utility model has the following beneficial effects:
[0014] The EVA film cutting device for photovoltaic modules designed by the utility model can be automatically adjusted according to the shapes and cutting routes of different EVA films to be cut through design coordination. The pneumatic rod drives the cutter to move downward, and the output motor drives the cutter to change the overall angle through the driving gear and the driven gear, thereby improving the diversity and versatility of cutting EVA films to a certain extent, and avoiding the cutter being able to cut only longitudinally or transversely, thereby increasing the limitations of the cutter.
[0015] The EVA film cutting device for photovoltaic modules designed by the utility model is designed and coordinated so that the device can allow the fan to follow the up and down movement of the fixed plate to blow away the EVA film debris on the surface of the operating table, thereby preventing the EVA film debris from overlapping with the EVA film to be cut and being cut together with the cutter. This situation may avoid the error between the incision of the EVA film and the part that is not raised by the EVA film debris. At the same time, the fan moving downward can suppress the top of the EVA film to be cut to a certain extent through the air outlet plate, thereby avoiding the deviation of the EVA film when cutting. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the hollow seat of the utility model;
[0018] Figure 3 This is a schematic diagram of the overall cross-section explosion structure of the disk of the utility model;
[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the fan of the utility model after being flipped 180 degrees horizontally.
[0020] Legend:
[0021] 1. Operating table; 2. Hollow seat; 3. Stepper motor; 4. Moving block; 5. Connecting plate; 6. Top plate; 7. Pneumatic rod; 8. Fixed plate; 9. Output motor; 10. Cutter; 11. Fan; 12. Discharge chute; 13. Threaded rod; 14. Output shaft; 15. Driving gear; 16. Rotating shaft; 17. Driven gear; 18. Bellows; 19. Air outlet plate. DETAILED DESCRIPTION
[0022] Reference Figure 1-Figure 4 The utility model provides an EVA film cutting device for photovoltaic modules, including an operating table 1, a hollow seat 2 is welded on the top of the left and right sides of the top of the operating table 1, a stepper motor 3 is fixed to the front end of the hollow seat 2 by bolts, a fixed shaft at the output end of the stepper motor 3 passes through the inside of a threaded rod 13 and is welded and fixed to the inside of the threaded rod 13, an outer spiral of the threaded rod 13 passes through the inside of a moving block 4 and is spirally connected with the inner thread of the moving block 4, a connecting plate 5 is welded to the top of the moving block 4, a top plate 6 is welded to the top of the connecting plate 5, a pneumatic rod 7 is fixed to the top of the top plate 6 by bolts, a fixed plate 8 is welded to the output end of the pneumatic rod 7, an outer side of a rotating shaft 16 is welded to the lower middle of the fixed plate 8, and a driven gear 1 is welded to the inner end of the rotating shaft 16 away from the fixed plate 8 7. The cutter 10 is fixed to the middle of the bottom of the driven gear 17 by bolts, the output motor 9 is fixed to the front side of the top of the fixed disk 8 by bolts, the output end of the output motor 9 is provided with an output shaft 14, and the driving gear 15 is welded to the end of the output shaft 14 away from the output motor 9. The top end of the rear of the threaded rod 13 is rotatably connected to the middle of the rear of the hollow seat 2, the outer side of the moving block 4 is slidably connected to the inner wall of the hollow seat 2, the outer side of the lower side of the connecting plate 5 is slidably connected to the upper part of the hollow seat 2, the top of the fixed disk 8 is in contact with the top plate 6, the outer side of the rear of the driving gear 15 is meshed with the outer side of the front side of the driven gear 17, and it can be automatically adjusted according to the shape and cutting line of different EVA films to be cut, thereby improving the diversity and versatility of cutting EVA films to a certain extent.
[0023] As a further implementation scheme of the above technical scheme: a turntable is arranged at the bottom of the driven gear 17, and the turntable is arranged inside the fixed disk 8 and is rotatably connected to the fixed disk 8, an annular groove is opened in the middle of the fixed disk 8, and the diameter of the annular groove in the middle of the fixed disk 8 matches the cross-sectional diameter of the turntable, so that the output motor 9 can drive the driven gear 17 to rotate, thereby achieving the purpose of rotating the cutter 10.
[0024] As a further implementation scheme of the above technical scheme: the stepper motor 3 and the output motor 9 can both rotate forward and reverse, a groove is opened on the top of the hollow seat 2, the length of the groove opened on the top of the hollow seat 2 matches the length of the threaded rod 13, and the width of the groove opened on the top of the hollow seat 2 matches the left and right length of the moving block 4 as a whole, so that the pneumatic rod 7 and the fixed plate 8 at the top and bottom of the top plate 6 can move forward and backward above the operating table 1 to achieve the purpose of cutting EVA films of different lengths.
[0025] As a further implementation scheme of the above technical scheme: the distance between the two hollow seats 2 on the top of the operating table 1 matches the overall cross-sectional diameter of the fixed disk 8, and the length of the cutter 10 matches the overall cross-sectional diameter of the fixed disk 8, a circular groove is opened in the middle of the top of the top plate 6, and the diameter of the circular groove in the middle of the top of the top plate 6 matches the bottom diameter of the output end of the pneumatic rod 7, so that the pneumatic rod 7 and the fixed disk 8 at the top and bottom of the top plate 6 can move back and forth above the operating table 1, so as to achieve the purpose of cutting EVA films of different lengths.
[0026] As a further implementation scheme of the above technical scheme: discharge troughs 12 are opened on the left and right sides of the top of the operating table 1, the fan 11 is fixed by bolts in the middle of the top rear of the top plate 6, a bellows 18 is set at the rear output end of the fan 11, and the end of the bellows 18 away from the fan 11 is connected to the air outlet plate 19 by glue.
[0027] As a further implementation scheme of the above technical scheme: the discharge trough 12 is distributed on the inner side of the two hollow seats 2, and the length of the discharge trough 12 is the same as the length of the hollow seat 2. The wind blown out by the fan 11 is blown downward through the bellows 18. The inside of the air outlet plate 19 is hollow, and a number of circular through holes with a diameter of five millimeters are opened at the bottom of the air outlet plate 19. Not only can the EVA film debris on the surface of the operating table 1 be blown away, but also the top of the EVA film to be cut can be suppressed to a certain extent, thereby avoiding the deviation of the EVA film during cutting.
[0028] Working principle:
[0029] When using the utility model, the angle of the cutter 10 is adjusted according to the shape of the EVA film to be cut, the output motor 9 on the front side of the top of the fixed disk 8 is turned on, and the output shaft 14 at the output end of the output motor 9 drives the driving gear 15 to rotate, and the driven gear 17 meshed on the outer side behind the driving gear 15 rotates together with the driving gear 15, and the driven gear 17 takes the rotating shaft 16 as the base point to drive the cutter 10 below it to change its angle, and stops the output motor 9 after adjusting to the set position, and then turns on the stepper motor 3, and the stepper motor 3 can drive the threaded rod 13 to rotate inside the hollow seat 2, and the moving block 4 on the outer side of the threaded rod 13 drives the connecting plate 5 and the top plate 6 to move just above the operating table 1, so as to cut according to the set length of the EVA film. After the preparation work is ready, the EVA film is placed above the operating table 1, and then the pneumatic rod 7 on the top of the top plate 6 and the fan on the top of the rear of the fixed disk 8 are turned on. 11. First, the pneumatic rod 7 drives the fixed plate 8 to move downward. At this time, the cutter 10 performs downward pressure cutting on the EVA film, and the fan 11 injects the external wind into the air outlet plate 19 through the bellows 18 at the output end. The air outlet plate 19 is hollow inside and has a plurality of through holes at the bottom. The wind generated by the compression of the fan 11 is sprayed onto the top of the EVA film on the operating table 1 through the through holes. The wind can not only blow the debris remaining when cutting the EVA film to the discharge troughs 12 on the left and right sides of the operating table 1, but also suppress the top of the EVA film to be cut to a certain extent to avoid the deviation of the EVA film during cutting. After cutting, the EVA film on the front side of the operating table 1 is removed, the pneumatic rod 7 retracts upward, and the operator pulls the EVA film behind the cutter 10 forward until the top of the EVA film is flush with the top of the front side of the operating table 1, and the remaining operations are repeated as above.
[0030] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An EVA film cutting device for photovoltaic modules, comprising an operating table (1), characterized in that: The top of the operating table (1) is fixedly connected to a hollow seat (2) at the top of the left and right sides, the front end of the hollow seat (2) is fixedly connected to a stepping motor (3), the output end of the stepping motor (3) is fixedly connected to a threaded rod (13), the outer side of the threaded rod (13) is spirally connected to a moving block (4), the top of the moving block (4) is fixedly connected to a connecting plate (5), the top of the connecting plate (5) is fixedly connected to a top plate (6), the top of the top plate (6) is fixedly connected to a pneumatic rod (7), and the output end of the pneumatic rod (7) is fixedly connected to A fixed disk (8) is provided, wherein a rotating shaft (16) is rotatably connected at the lower middle of the fixed disk (8), an end of the rotating shaft (16) away from the fixed disk (8) is fixedly connected to a driven gear (17), a cutter (10) is fixedly connected to the middle of the bottom of the driven gear (17), an output motor (9) is fixedly connected to the front side of the top of the fixed disk (8), an output shaft (14) is fixedly connected to the output end of the output motor (9), and an end of the output shaft (14) away from the output motor (9) is fixedly connected to a driving gear (15).
2. The EVA film cutting device for photovoltaic modules according to claim 1, characterized in that: The top end of the threaded rod (13) is rotatably connected to the middle of the rear of the hollow seat (2), the outer side of the moving block (4) is slidably connected to the inner wall of the hollow seat (2), the lower outer side of the connecting plate (5) is slidably connected to the upper part of the hollow seat (2), the top of the fixed plate (8) is in contact with the top plate (6), and the rear outer side of the driving gear (15) is meshed with the front outer side of the driven gear (17).
3. The EVA film cutting device for photovoltaic modules according to claim 1, characterized in that: A rotating disk is arranged at the bottom of the driven gear (17), and the rotating disk is arranged inside the fixed disk (8) and is rotatably connected to the fixed disk (8). An annular sliding groove is opened in the middle of the fixed disk (8), and the diameter of the annular sliding groove in the middle of the fixed disk (8) matches the cross-sectional diameter of the rotating disk.
4. The EVA film cutting device for photovoltaic modules according to claim 1, characterized in that: The stepper motor (3) and the output motor (9) can both rotate forward and reverse. A groove is provided on the top of the hollow seat (2). The length of the groove provided on the top of the hollow seat (2) matches the length of the threaded rod (13), and the width of the groove provided on the top of the hollow seat (2) matches the left-right length of the entire moving block (4).
5. The EVA film cutting device for photovoltaic modules according to claim 1, characterized in that: The distance between the two hollow seats (2) at the top of the operating table (1) matches the overall cross-sectional diameter of the fixed disk (8), and the length of the cutter (10) matches the overall cross-sectional diameter of the fixed disk (8). A circular groove is provided in the middle of the top of the top plate (6), and the diameter of the circular groove in the middle of the top of the top plate (6) matches the bottom diameter of the output end of the pneumatic rod (7).
6. The EVA film cutting device for photovoltaic modules according to claim 1, characterized in that: The left and right sides of the top of the operating table (1) are provided with discharge grooves (12); a fan (11) is fixedly connected to the middle of the top rear of the top plate (6); a bellows (18) is fixedly connected to the rear output end of the fan (11); and an air outlet plate (19) is fixedly connected to the end of the bellows (18) away from the fan (11).
7. The EVA film cutting device for photovoltaic modules according to claim 6, characterized in that: The discharge groove (12) is distributed at the inner side of the two hollow seats (2), and the length of the discharge groove (12) is the same as the length of the hollow seat (2). The wind blown out by the fan (11) is blown downward through the bellows (18). The inside of the air outlet plate (19) is hollow, and a plurality of circular through holes with a diameter of five millimeters are opened at the bottom of the air outlet plate (19).