EVA plate cutting device for photovoltaic module production

Abstract

The utility model discloses an EVA (Ethylene Vinyl Acetate) plate cutting device for photovoltaic module production, which relates to the field of photovoltaic module production equipment and comprises a cutting table, a first U-shaped frame, a lifting plate, a cutter and a leveling mechanism. A first U-shaped frame is fixedly connected to the center of the upper portion of the cutting table, and a lifting plate is slidably connected into the first U-shaped frame and connected with a lifting driving mechanism. The cutting knife is installed at the bottom of the lifting plate, and the two leveling mechanisms are symmetrically arranged on the two sides of the cutting knife. The leveling mechanism is installed on the bottom face of the lifting plate and comprises a U-shaped base, a rotating shaft, a rotating plate, supporting plates and a leveling roller, the U-shaped base is fixedly connected to the bottom face of the lifting plate, the rotating shaft is elastically and rotationally connected into the U-shaped base, the rotating plate is fixedly connected with the rotating shaft, the supporting plates are fixedly connected to the two ends of the rotating plate, and the leveling roller is rotationally connected between the two supporting plates and used for leveling the EVA plate before cutting. And the cutting quality is improved. When the device is used for cutting an EVA plate, the EVA plate can be tensioned at the cutting position, so that the flatness of a cutting opening of the EVA plate is guaranteed, and meanwhile, the cutting efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module production equipment, and in particular to an EVA board cutting device for photovoltaic module production. Background Technology

[0002] With the continuous development of solar energy technology, the demand for solar cell modules is increasing. Solar cell modules typically consist of high-efficiency crystalline silicon solar cells, ultra-white textured tempered glass, EVA panels, transparent TPT backsheets, and aluminum alloy frames. Among these, EVA panels, as a hot-melt adhesive, play a crucial role in the module. They are non-sticky at room temperature but become sticky after heating, and the degree of stickiness can be controlled by adjusting the heating temperature. The thinness and high light transmittance of EVA panels make them an ideal bonding material in the assembly process of solar panels, primarily used to bond the solar panels to the backsheet or glass panel.

[0003] However, some problems exist in the actual production process of EVA board cutting. EVA material is typically purchased in rolls and needs to be cut on the production line to meet the size requirements of different modules. Due to the unique texture of EVA material—its high flexibility and smooth surface—uneven cuts are prone to occur during cutting. These uneven cuts not only affect the appearance quality of the modules but may also lead to problems such as weak adhesion and air bubbles during subsequent assembly, thus affecting the overall performance and lifespan of the solar cell modules. Furthermore, manual cutting is inefficient and difficult to meet the needs of large-scale production.

[0004] While existing EVA board cutting equipment for photovoltaic module production has improved cutting efficiency to some extent, it still falls short in terms of cutting precision. Especially when processing EVA material, due to its physical properties, the cutting equipment struggles to precisely control the uniformity of the cuts, leading to frequent issues of uneven cuts. This problem not only increases production costs but also reduces production efficiency, becoming one of the key factors restricting the improvement of photovoltaic module production quality.

[0005] Therefore, developing a device that can effectively solve the problem of uneven cuts during EVA board cutting is of great practical significance for improving the production quality and efficiency of photovoltaic modules. Utility Model Content

[0006] The purpose of this invention is to provide an EVA board cutting device for photovoltaic module production, which solves the problem of uneven cuts that easily occur when cutting EVA boards using existing equipment.

[0007] To achieve the above objectives, this utility model provides the following solution: an EVA board cutting device for photovoltaic module production, comprising:

[0008] A cutting table for placing EVA boards;

[0009] The first U-shaped frame is fixedly connected to the center above the cutting table;

[0010] The lifting plate is slidably connected inside the first U-shaped frame, and its top is connected to the lifting drive mechanism.

[0011] A cutting blade is installed at the bottom of the lifting plate;

[0012] Two leveling mechanisms are arranged on opposite sides of the cutting blade. The leveling mechanism is installed on the bottom surface of the lifting plate and includes a U-shaped seat fixed to the bottom surface of the lifting plate, a rotating shaft elastically rotatably connected in the U-shaped seat, a rotating plate fixed to the rotating shaft, support plates fixed to both ends of the rotating plate, and a leveling roller rotatably connected between the two support plates.

[0013] In one optional embodiment, the two ends of the rotating shaft are rotatably connected to the two sides of the U-shaped seat, and the two ends of the rotating shaft are connected to cylinders, which are connected to the U-shaped seat by torsion springs.

[0014] In one alternative embodiment, the cylinder is detachably connected to the rotating shaft, and the torsion spring is detachably connected to the cylinder and the U-shaped seat.

[0015] In one alternative embodiment, the lifting drive mechanism is a first hydraulic rod, which is connected to a hydraulic system.

[0016] In one alternative embodiment, a fixing mechanism is installed on the cutting tables on both sides of the first U-shaped frame, the fixing mechanism being used to press and fix the EVA board from above during the cutting process.

[0017] In one alternative embodiment, the fixing mechanism includes a second U-shaped frame fixedly connected to the upper surface of the cutting table, a pressure plate slidably connected inside the second U-shaped frame, and the pressure plate being driven to move up and down by a second hydraulic rod mounted on the second U-shaped frame.

[0018] In one alternative embodiment, the bottom surface of the pressure plate is provided with an anti-slip layer.

[0019] In one alternative embodiment, the upper surface of the cutting table is provided with a cutting groove adapted to the cutting blade.

[0020] In one alternative embodiment, a control system is also included, which includes a controller, a sensor group, and a drive mechanism control unit.

[0021] In one alternative implementation, the sensor group includes a position sensor, a pressure sensor, and a cutting blade position sensor for real-time monitoring of the position of the EVA board, the pressure of the pressure plate, and the position of the cutting blade.

[0022] Compared with the prior art, the present invention discloses at least the following beneficial effects:

[0023] This invention effectively solves the problems of uneven cuts and unstable cutting in existing EVA board cutting devices by setting up a flattening mechanism and two symmetrical fixing mechanisms. The flattening mechanism can tighten the EVA board during the cutting process to ensure the flatness of the cut, while the symmetrical fixing mechanisms can stably position the EVA board to be cut, further improving cutting accuracy and stability. This improvement not only significantly enhances cutting quality and reduces component assembly defects caused by uneven cutting, but also reduces material waste and rework costs. At the same time, the stable cutting process allows the equipment to operate at higher efficiency, meeting the needs of large-scale production. In addition, this technical solution has good versatility and adaptability, and can be applied to cutting EVA boards of different thicknesses and sizes, further enhancing the practicality and economy of the equipment. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0026] Figure 2 This is a side view of an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the flattening mechanism in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram showing the positional relationship between the flattening roller and the U-shaped seat in an embodiment of this utility model;

[0029] Figure 5 This is a diagram showing the connection relationship between the rotating shaft, tension spring, cylinder, and U-shaped seat in an embodiment of this utility model.

[0030] In the diagram: 1. Cutting table; 2. First U-shaped frame; 3. First hydraulic rod; 4. Lifting plate; 5. Cutting knife; 6. Second U-shaped frame; 7. Second hydraulic rod; 8. Pressure plate; 9. Anti-slip layer; 10. U-shaped seat; 11. Rotating shaft; 12. Cylinder; 13. Torsion spring; 14. Rotating plate; 15. Support plate; 16. Flattening roller. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figures 1 to 5 As shown, this utility model provides an EVA board cutting device for photovoltaic module production, including a cutting table 1, with a first U-shaped frame 2 fixedly connected to the middle of the upper surface of the cutting table 1. A first hydraulic rod 3 is installed on the top of the first U-shaped frame 2, and its output end is fixedly connected to a lifting plate 4, which is slidably connected inside the first U-shaped frame 2. A cutting blade 5 is installed on the bottom surface of the lifting plate 4, and a cutting groove adapted to the cutting blade 5 is formed on the upper surface of the cutting table 1 to guide the cutting blade 5 to perform precise cutting.

[0034] In this embodiment, to ensure the stability of the EVA board during the cutting process, fixing mechanisms are provided on both sides of the first U-shaped frame 2. The fixing mechanisms include a second U-shaped frame 6 fixedly connected to the upper surface of the cutting table 1. A second hydraulic rod 7 is mounted on the top of the second U-shaped frame 6, and the output end of the second hydraulic rod 7 is fixedly connected to a pressure plate 8. The pressure plate 8 can slide inside the second U-shaped frame 6. An anti-slip layer 9 is provided on the bottom surface of the pressure plate 8 to increase friction with the EVA board and ensure the stability of the EVA board during the cutting process.

[0035] In this embodiment, to solve the problem of uneven cuts during EVA board cutting, two symmetrical leveling mechanisms are installed on the bottom surface of the lifting plate 4. Each leveling mechanism includes a U-shaped seat 10 fixedly connected to the bottom surface of the lifting plate 4, with a rotating shaft 11 rotatably mounted inside. A rotating plate 14 is fixedly connected to the outer surface of the rotating shaft 11, and two symmetrical support plates 15 are fixedly connected to the bottom surface of the rotating plate 14. A leveling roller 16 is rotatably mounted between the two support plates 15. Cylinders 12 are connected to both ends of the rotating shaft 11, and the cylinders 12 are connected to the U-shaped seat 10 via torsion springs 13. The design of the torsion springs 13 allows the leveling roller 16 to automatically adjust its angle during the cutting process, better conforming to the surface of the EVA board, thereby leveling the cut position of the EVA board and ensuring the flatness of the cut.

[0036] Furthermore, the cylinder 12 is detachably connected to the rotating shaft 11, for example, by a threaded connection or by bolt fastening, so as to replace the torsion spring 13 inside the cylinder 12. In actual use, torsion springs 13 with different elastic coefficients can be replaced as needed.

[0037] Through the above structural design, the cutting device of this utility model can effectively solve the problems of uneven cuts and unstable cutting when cutting EVA boards in the prior art, improve cutting quality and production efficiency, and reduce production costs.

[0038] In a preferred embodiment, the EVA board cutting device for photovoltaic module production of this utility model further includes a control system, which includes a controller, a sensor group, a drive mechanism control unit, and an operating interface. The controller is used to receive input signals and control the actions of various components of the cutting device; the sensor group includes a position sensor, a pressure sensor, and a cutting blade 5 position sensor, used to monitor the position of the EVA board, the pressure of the pressure plate 8, and the position of the cutting blade 5 in real time; the drive mechanism control unit is used to control the extension and retraction of the first hydraulic rod 3 and the second hydraulic rod 7, as well as the lifting and lowering of the cutting blade 5; the operating interface is used to input cutting parameters (such as cutting length, cutting speed, etc.) and start / stop the cutting operation.

[0039] The control system works as follows: In the cutting preparation stage, the operator inputs cutting parameters (such as cutting length, cutting speed, etc.) through the operating interface. Based on the input parameters, the controller adjusts the positions of the first hydraulic rod 3 and the second hydraulic rod 7 via the drive mechanism control unit, putting the cutting blade 5 and the pressure plate 8 in a ready state. In the positioning stage, the EVA board is placed on the cutting table 1. The position sensor detects the position of the EVA board, ensuring it is aligned with the cutting blade 5. Based on the feedback signal from the position sensor, the controller adjusts the position of the pressure plate 8 via the drive mechanism control unit, pressing the EVA board firmly. In the cutting stage, based on the cutting parameters and sensor feedback signals, the controller controls the first hydraulic rod 3 to move the lifting plate 4, the cutting blade 5, and the flattening mechanism downwards. When the flattening roller 16 contacts the EVA board, the controller adjusts the pressure of the flattening roller 16 based on the feedback signal from the pressure sensor, ensuring the EVA board is tightened. After the cutting blade 5 reaches the predetermined position, the controller controls the cutting blade 5 to perform the cutting action. The position sensor of the cutting blade 5 monitors its position in real time to ensure cutting accuracy. After the cutting is completed, the controller controls the first hydraulic rod 3 and the second hydraulic rod 7 to reset, the pressure plate 8 releases the EVA board, and the operator can remove the cut EVA board and prepare for the next cutting operation.

[0040] In this control system, the position of the EVA board and the cutting blade 5 are monitored in real time by sensors. The controller can precisely control the cutting process to ensure the flatness and accuracy of the cut. The automated control system reduces the error and time of manual operation, improves cutting efficiency, and meets the needs of large-scale production. Operators only need to input parameters and start the cutting operation through the operation interface, reducing tedious manual operations and reducing labor intensity. The control system can monitor the equipment operating status in real time, promptly detect and handle abnormal situations, and improve the stability and reliability of the equipment. In addition, the control system can record cutting parameters and production data, which facilitates production management and quality traceability.

[0041] The working principle of this utility model embodiment is as follows:

[0042] When cutting EVA boards, firstly, one end of the rolled EVA board is passed through two fixing mechanisms and the cutting blade 5, and the cutting position is aligned with the cutting blade 5. Then, the second hydraulic rod 7 is activated, which can drive the pressure plate 8 and the anti-slip layer 9 to move downward, thereby pressing and fixing the EVA board. After that, the first hydraulic rod 3 is activated, which drives the lifting plate 4, the cutting blade 5, and the two flattening mechanisms to move downward. When the two flattening rollers 16 move to contact the EVA board, the lifting plate 4 continues to move downward, which can drive the two flattening rollers 16 to rotate outward and cause the torsion spring 13 to deform. The outward rotation of the two flattening rollers 16 can tighten the cutting position of the EVA board, thereby ensuring the flatness of the cut edge of the EVA board.

[0043] The beneficial effects of this utility model embodiment are mainly reflected in the following aspects:

[0044] 1. Improved Cutting Quality: By incorporating a flattening mechanism, the EVA board is simultaneously cut and tightened at the cut edge, effectively ensuring the flatness of the cut. This improvement significantly solves the problem of uneven cuts in existing EVA board cutting technologies, enhancing cutting quality and enabling the cut EVA board to better meet the precision requirements of photovoltaic module assembly, reducing module assembly defects caused by uneven cutting.

[0045] 2. Enhanced Cutting Stability: This technical solution utilizes two symmetrical fixing mechanisms to stably position the EVA board to be cut. This symmetrical fixing method ensures the stability of the EVA board during the cutting process, preventing the cutting effect from being affected by the flexibility and slippage of the material. A stable cutting process not only improves cutting accuracy but also reduces material waste caused by cutting instability, further lowering production costs.

[0046] 3. Improved Production Efficiency: This technical solution effectively improves cutting quality and stability, reducing rework and scrap rates caused by cutting issues, thereby significantly improving the overall efficiency of photovoltaic module production. Simultaneously, the stable cutting process allows equipment to operate at higher speeds, further enhancing production efficiency and meeting the demands of large-scale production.

[0047] 4. Reduced production costs: By improving cutting quality and stability, material waste and rework costs caused by uneven cutting are reduced. Furthermore, a stable cutting process also reduces equipment maintenance costs and failure rates, thereby lowering the overall cost of photovoltaic module production.

[0048] 5. Enhanced Equipment Adaptability: This technical solution is suitable for cutting EVA boards of different thicknesses and sizes, exhibiting excellent versatility and adaptability. By adjusting the parameters of the leveling and fixing mechanisms, different production needs can be met, enabling the equipment to perform well in various production scenarios.

[0049] In summary, this technical solution, through innovative structural design, effectively solves the problems existing in current EVA board cutting devices, significantly improves cutting quality, stability, and production efficiency, and reduces production costs, thus demonstrating significant economic and social benefits.

[0050] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0051] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An EVA board cutting device for photovoltaic module production, characterized in that, include: Cutting table (1), used to place EVA board; The first U-shaped frame (2) is fixedly connected to the center above the cutting table (1); The lifting plate (4) is slidably connected inside the first U-shaped frame (2), and its top is connected to the lifting drive mechanism; A cutting blade (5) is installed at the bottom of the lifting plate (4); Two flattening mechanisms are arranged on opposite sides of the cutting blade (5). The flattening mechanisms are installed on the bottom surface of the lifting plate (4) and include a U-shaped seat (10) fixed to the bottom surface of the lifting plate (4), a rotating shaft (11) elastically rotatably connected in the U-shaped seat (10), a rotating plate (14) fixed to the rotating shaft (11), support plates (15) fixed to both ends of the rotating plate (14), and a flattening roller (16) rotatably connected between the two support plates (15).

2. The EVA board cutting device for photovoltaic module production according to claim 1, characterized in that, The two ends of the rotating shaft (11) are rotatably connected to the two sides of the U-shaped seat (10), and the two ends of the rotating shaft (11) are connected to a cylinder (12), which is connected to the U-shaped seat (10) by a torsion spring (13).

3. The EVA board cutting device for photovoltaic module production according to claim 2, characterized in that, The cylinder (12) is detachably connected to the rotating shaft (11), and the torsion spring (13) is detachably connected to the cylinder (12) and the U-shaped seat (10).

4. The EVA board cutting device for photovoltaic module production according to claim 1, characterized in that, The lifting drive mechanism is a first hydraulic rod (3), which is connected to the hydraulic system.

5. The EVA board cutting device for photovoltaic module production according to claim 1, characterized in that, A fixing mechanism is installed on the cutting table (1) on both sides of the first U-shaped frame (2). The fixing mechanism is used to press and fix the EVA board from above during the cutting process.

6. The EVA board cutting device for photovoltaic module production according to claim 5, characterized in that, The fixing mechanism includes a second U-shaped frame (6) fixedly connected to the upper surface of the cutting table (1), and a pressure plate (8) is slidably connected inside the second U-shaped frame (6). The pressure plate (8) is driven to move up and down by a second hydraulic rod (7) installed on the second U-shaped frame (6).

7. The EVA board cutting device for photovoltaic module production according to claim 6, characterized in that, The bottom surface of the pressure plate (8) is provided with an anti-slip layer (9).

8. The EVA board cutting device for photovoltaic module production according to claim 1, characterized in that, The upper surface of the cutting table (1) is provided with a cutting groove that is compatible with the cutting blade (5).

9. The EVA board cutting device for photovoltaic module production according to claim 1, characterized in that, It also includes a control system, which comprises a controller, a sensor group, and a drive mechanism control unit.

10. The EVA board cutting device for photovoltaic module production according to claim 9, characterized in that, The sensor group includes a position sensor, a pressure sensor, and a cutting blade (5) position sensor, which are used to monitor the position of the EVA board, the pressure of the pressure plate (8), and the position of the cutting blade (5) in real time.

Images