Photovoltaic packaging adhesive film production device with recovery structure and use method

Abstract

The invention discloses a photovoltaic packaging adhesive film production device with a recycling structure and a using method, and relates to the technical field of photovoltaic packaging adhesive film production.The photovoltaic packaging adhesive film production device comprises a frame, a casting roller, a pulverizer and a recycling extruder, and the right side of the interior of the frame is connected with a transversely-arranged mixing and stirring shaft; an extruder is connected to the lower side of the outer part of the mixing stirring shaft, a pair of staggered casting rollers are connected to the lower side of the outer part of the extruder and the right side of the inner part of the frame body up and down, and conveying belts are connected to the part between the casting rollers and the upper and lower sides of the casting rollers. By installing the pulverizer, the recycling extruder, the intelligent winding machine and the like, uniform mixing of raw materials and auxiliaries and intelligent identification of the length of the adhesive film are achieved, the thickness uniformity of the adhesive film is guaranteed, the adhesive film with the corresponding required length can be automatically wound, and the problems that in the production process, photovoltaic packaging adhesive film waste generally can only be treated as waste, and the production cost is low are solved. The production efficiency and the product quality are improved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic encapsulation film production, and in particular to a photovoltaic encapsulation film production device with a recycling structure and a use method thereof. Background Art

[0002] Photovoltaic encapsulation film is a core material in solar panels. It is responsible for laminating and bonding cells, glass, and backsheets, providing sealing, insulation, and aging resistance. Its quality directly affects the lifespan and power generation efficiency of solar panels. Therefore, the industry has extremely high requirements for the film's performance stability and production precision. With the rapid expansion of the global photovoltaic industry, the market demand for photovoltaic encapsulation film has surged. At the same time, green production and resource recycling have become important directions for the development of the industry. Companies are increasingly demanding to reduce production costs and improve raw material utilization. Traditional photovoltaic encapsulation film production generates a large amount of waste, such as scrap and substandard products. Due to its complex composition and difficulty in processing, this waste is usually discarded as waste, which not only wastes resources but also increases environmental pressure. In addition, the accumulation or improper handling of waste can affect the production process and further increase production costs. At the same time, deficiencies in raw material processing, molding precision, and post-processing in traditional production also indirectly limit the feasibility of waste recycling. Therefore, there is a need for a production device that can convert waste into reusable raw materials, improve production efficiency and product quality, and reduce production costs.

[0003] Patent CN114772340B discloses a winding device with a drying function for the calendering production of photovoltaic EVA encapsulation films. The above patent prevents dust from affecting the quality of the film, ensures the overall quality of the film, and improves the quality of the film winding.

[0004] The above patent sets up a dust removal mechanism to prevent dust from affecting the permeability of the film and affecting the overall quality of the film, and sets up a traction mechanism to cool the film to prevent stretching and deformation. There is room for optimization in the closed-loop recycling of waste and improvement of resource utilization in the entire production process. This patent only focuses on dust removal and cooling in the winding stage, and does not involve the recycling and utilization mechanism of waste in the production process. It cannot achieve the recycling and reuse of waste. There is obvious room for optimization in core issues related to recycling, such as reducing raw material waste, reducing production costs and improving resource utilization.

[0005] To this end, the present application proposes a photovoltaic encapsulation film production device and a method of use with a recycling structure that can turn waste materials into usable raw materials. Summary of the Invention

[0006] The purpose of the present invention is to provide a photovoltaic encapsulation film production device with a recycling structure and a method of use, so as to solve the technical problems of waste of unqualified waste resources, low production efficiency and high cost proposed in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A photovoltaic encapsulation film production device with a recycling structure, comprising a frame, a casting roller, a crusher and a recycling extruder, a feed hopper being installed on the inner top of the frame, a horizontal mixing and stirring shaft being connected to the bottom of the feed hopper on the right side of the interior of the frame, an extruder being connected to the outer lower side of the mixing and stirring shaft, a pair of upper and lower staggered casting rollers being connected to the right side of the interior of the frame, a conveyor belt being connected between the casting rollers and on both sides, a first gear, a second gear and a third gear being connected to the right side of the casting roller, the first gear being connected to the drive motor through the motor shaft, the top of the upper conveyor belt of the upper casting roller being connected to the die at the bottom of the extruder for transmitting the formed film, and the bottom of the lower conveyor belt of the lower casting roller being connected to the top of the cooling roller group.

[0008] Preferably, a crusher is connected and installed between the inside of the frame and the casting roller, an infrared sensor is installed on the upper side of the casting roller, the infrared sensor is connected to the control circuit through a wire, the control circuit is connected to the power supply through a wire, a flip baffle is installed on the crusher and the lower side of the conveyor belt, an electromagnet is embedded in the connection between the bottom of the flip baffle and the bottom notch, the electromagnet is connected to the control circuit through a wire, the bottom notch of the crusher is connected to the top screen of the recycling extruder, three fixed knife support seats are installed in parallel on the right side of the crusher, four fixed blades are evenly installed on each fixed knife support seat, the drive module is connected to the right side of the crusher at the bottom of the casting roller, and the right side of the fixed knife support seat is connected to the connecting shaft of the drive module.

[0009] Preferably, the left connecting shaft of the driving module is connected to the casting roller, the cooling roller group, the fixed knife support seat and the right side of the screw to provide driving force, and the right side of the driving module is connected to the external power supply through a wire;

[0010] A connecting shaft is installed on the right side of the driving module through an embedded connection. A driving gear is installed on the right side of the connecting shaft. The right side of the driving gear is connected to the left side of the motor shaft, and the right side of the motor shaft is connected to the driving motor.

[0011] Preferably, stirring blades are evenly installed on the mixing stirring shaft in the circumferential direction, and the right side of the mixing stirring shaft is connected to the left side of the connecting shaft in the driving module, and the driving module provides stirring power for the mixing stirring shaft.

[0012] Preferably, a screw is connected to the inner wall on the right side of the extruder, and a die is connected to the bottom of the lower side of the extruder. The raw materials are stirred evenly by the mixing shaft and then enter the extruder from the bottom notch;

[0013] The screw is powered by a drive module. The right side of the screw is connected to the connecting shaft. The right side of the connecting shaft is connected to the drive gear. The right side of the drive gear is connected to the left side of the drive motor. The drive module connected to the screw is embedded in the right inner wall of the extruder. A connecting shaft is provided between the drive module and the screw to transmit the driving force.

[0014] Preferably, the first gear and the second gear are meshed, the second gear and the third gear are meshed, the upper casting roller is connected to the first gear, the lower casting roller is connected to the third gear, the first gear and the third gear are meshed in the middle to transmit power through the second gear, the right side of the first gear is connected to the left side of the motor shaft, the right side of the motor shaft is connected to the left side of the drive motor, the drive motor is connected to the external power supply through a wire, and the power is transmitted through the motor shaft to drive the upper first gear to rotate, the second gear rotates by meshing with the first gear, and the third gear rotates by meshing with the second gear.

[0015] Preferably, a screen is installed on the upper side of the recycling extruder, a hot melt furnace is installed on the lower side of the screen, an electric stirrer is installed on the upper side of the hot melt furnace, an electric heating tube is installed on the upper left side next to the electric stirrer, a cooling port is installed on the lower side of the hot melt furnace, a filter is installed on the lower side of the cooling port, a screw is embedded and connected on the right side of the recycling extruder, and a drive module is connected to the right side of the screw through a connecting shaft.

[0016] Preferably, the notch at the top of the cooling roller group is connected to the notch at the bottom of the casting roller;

[0017] A cooling roller group is connected and installed on the right side of the frame, and a conveyor belt is installed on the cooling roller group. One group of conveyor belts of the cooling roller group is connected to the lower conveyor belt of the lower casting roller 12, and one group of conveyor belts is connected to the front notch outside the recycling extruder. The rear side of the conveyor shaft is connected to the cooling roller group through the conveyor belt, and the front side of the conveyor shaft is connected to the rear side of the outside of the intelligent winder through the conveyor belt. An infrared sensor is installed on the left side of the intelligent winder, a thickness gauge is connected and installed on the bottom of the intelligent winder, and the conveyor shaft is connected and installed on the upper side of the thickness gauge.

[0018] Preferably, the method of use comprises the following steps:

[0019] S1, the raw materials enter the mixing shaft through the feed hopper, complete the mixing and drying process, make the raw materials evenly mixed and dry to meet the standards, and then transport them through the bottom gap;

[0020] S2, the screw receives the mixed raw materials from the mixing shaft and extrude the raw materials through the die to form a continuous film substrate;

[0021] S3, the casting roller and the conveyor belt roll and flatten the received film substrate, and at the same time separate the waste generated in the production process; the waste is processed by the crusher and the recycling extruder to convert it into reusable recycled material, and then the new film and the recycled film are transported to the cooling roller group together through the conveyor belt;

[0022] S4: The cooling roller group cools and shapes the received film, and uses a thickness gauge to check whether the film thickness meets the standard. Finally, the intelligent winder winds the qualified film into a coil of the required length.

[0023] Preferably, the method for using S3 is specifically as follows:

[0024] S31, the film substrate is rolled and flattened by the casting roller and initially cooled; during the transmission process, unqualified products and other waste materials are separated and transported to the crusher through the flip baffle;

[0025] S32, the waste is crushed into fine particles in the crusher by the fixed blade driven by the drive module, and then filtered through the screen to remove large impurities before entering the hot melting furnace of the recycling extruder;

[0026] S33. The electric heating tube in the hot melting furnace melts the particles, and the electric stirring ensures that the molten material is uniform and free of bubbles. After the molten material is initially cooled by the cooling port, it passes through the filter to remove fine impurities and finally becomes reusable recycled material under the push of the screw. It is transported to the cooling roller group together with the new film via the conveyor belt.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention is equipped with a casting roller, a crusher and a recycling extruder to achieve the efficient recovery and reuse of waste materials generated during the production process, such as scraps and substandard products. Through steps such as crushing and melting and reshaping, the waste materials are converted into raw materials that can be put into production again, greatly reducing the waste of raw materials. The graded filtration and impurity separation structure can specifically remove pollutants in the waste materials, ensuring that the purity of the recycled materials is close to that of the new materials, solving the problem of performance degradation of traditional recycled materials and realizing the function of resource recycling.

[0029] 2. The present invention is equipped with a mixing agitator shaft and a fan to dry the main raw materials such as EVA and POE to remove moisture and avoid affecting the film performance. At the same time, the additives are accurately added and mixed uniformly according to the proportion, ensuring that the film has good UV resistance and PID resistance, thus realizing the pretreatment function of the raw materials.

[0030] 3. The present invention is equipped with a drive module, which enables the connecting shaft, drive gear and drive motor to link the mixing and stirring shaft, screw, casting roller and fixed knife support seat of the crusher and other key components to achieve unified power transmission, ensure the speed matching of mixing, extrusion and casting, avoid material pushing or breakage, and improve production continuity.

[0031] 4. The present invention is equipped with a thickness gauge and an intelligent winder to further process the formed film to prevent surface wrinkles and deformation of the film. By detecting the thickness of the formed film, the formed film can be automatically wound up. The film length can be intelligently identified and automatically wound to the required length, reducing manual intervention, improving production efficiency and adaptability, and meeting the final use requirements of photovoltaic module packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0033] Figure 2 It is a side structural schematic diagram of the present invention;

[0034] Figure 3 It is a schematic diagram of the front structure of the present invention;

[0035] Figure 4 This is a connection diagram of the drive module of the present invention;

[0036] Figure 5 This is a schematic structural diagram of the driving module of the present invention;

[0037] Figure 6 is a side sectional view of the present invention;

[0038] Figure 7 It is a structural schematic diagram of the pulverizer of the present invention;

[0039] Figure 8 It is a schematic structural diagram of the cooling roller group of the present invention.

[0040] In the figure: 1. frame; 2. motor shaft; 3. second gear; 4. third gear; 5. fan; 6. feed hopper; 7. mixing shaft; 8. stirring blade; 9. extruder; 10. screw; 11. die; 12. casting roller; 13. crusher; 14. screen; 15. hot melt furnace; 16. filter; 17. recycling extruder; 18. cooling roller group; 19. thickness gauge; 20. conveyor shaft; 21. intelligent winder; 22. conveyor belt; 23. fixed knife support seat; 24. fixed blade; 25. wire; 26. cooling port; 27. electric heating tube; 28. electric stirring; 29. ​​connecting shaft; 30. first gear; 31. drive motor; 32. drive module; 33. drive gear; 34. flip baffle; 35. infrared sensor; 36. control circuit; 37. electromagnet. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0044] Example 1: Please refer to Figure 1 、 Figure 2 and Figure 4 , a photovoltaic encapsulation film production device with a recycling structure, comprising a frame 1, a casting roller 12, a crusher 13 and a recycling extruder 17, a feed hopper 6 is installed on the top inside the frame 1, and a horizontal mixing and stirring shaft 7 is installed on the right side of the interior of the frame 1 and connected to the bottom of the feed hopper 6, and an extruder 9 is connected to the lower side of the outside of the mixing and stirring shaft 7. A pair of staggered casting rollers 12 are installed on the lower side of the outer side of the extruder 9 and the right side of the interior of the frame, and a conveyor belt 22 is connected between the casting rollers 12 and on both sides. A first gear 30, a second gear 3 and a third gear 4 are connected to the right side of the casting roller 12, and the first gear 30 is connected to the drive motor 31 through the motor shaft 2. The top of the upper conveyor belt 22 of the upper casting roller 12 is connected to the die 11 at the bottom of the extruder 9 for transmitting the formed film, and the bottom of the lower conveyor belt 22 of the lower casting roller 12 is connected to the top of the cooling roller group 18;

[0045] A crusher 13 is connected and installed between the inner side of the frame 1 and the casting roller 12, an infrared sensor 35 is installed on the upper side of the casting roller 12, the infrared sensor 35 is connected to the control circuit 36 ​​through a wire 25, and the control circuit 36 ​​is connected to the power supply through a wire 25. The crusher 13 is fitted with a flip baffle 34 on the lower side of the conveyor belt 22, and an electromagnet 37 is embedded at the connection between the bottom of the flip baffle 34 and the bottom notch, and the electromagnet 37 is connected to the control circuit 36 ​​through a wire 25. The bottom notch of the crusher 13 is connected to the top screen 14 of the recycling extruder 17, and three fixed knife support seats 23 are installed in parallel on the right side of the inside of the crusher 13, and four fixed blades 24 are evenly installed on each fixed knife support seat 23. The drive module 32 is connected and installed on the right side of the crusher 13 at the bottom of the casting roller 12, and the right side of the fixed knife support seat 23 is connected to the connecting shaft 29 of the drive module 32;

[0046] Furthermore, the frame 1 provides installation locations for the casting roller 12, the infrared sensor 35, the crusher 13, and the control circuit 36. The casting roller 12 provides an installation location for the conveyor belt 22. The conveyor belt 22 and the crusher 13 provide installation locations for the flip baffle 34. The film is passed from the extruder 9 through the conveyor belt 22 to the casting roller 12. The infrared sensor 35 scans the film thickness on the casting roller 12 in real time. When the signal detected by the infrared sensor 35 is within the preset threshold value of 0.2mm to 0.8mm, the control circuit 36 ​​enters the standby mode, the electromagnet 37 is de-energized, the flip baffle 34 is seamlessly attached to the lower side of the conveyor belt 22, and the film is transported along the conveyor belt 22 to the cooling roller assembly 18. If the film thickness is not within the preset threshold value of 0.2mm to 0.8mm, the control circuit 36 ​​enters the standby mode, the electromagnet 37 is de-energized, the flip baffle 34 is seamlessly attached to the lower side of the conveyor belt 22, and the film is transported along the conveyor belt 22 to the cooling roller assembly 18. When the film is within 2mm~0.8mm, the signal detected by the infrared sensor 35 transmits the abnormal signal to the control circuit 36. After receiving the abnormal signal, the control circuit 36 ​​immediately sends a power-on command to the electromagnet 37. The electromagnet 37 is energized to generate a magnetic field, which adsorbs the armature structure at the bottom of the flip baffle 34 and drives the flip baffle 34 to flip downward 30°~45°, forming a guiding slope with the conveyor belt 22. The abnormal film segment moves with the conveyor belt 22, along the flip slope of the flip baffle 34, and is transported and slides into the crusher 13; at this time, the control circuit 36 ​​synchronously sends a signal to the drive module 32 to start the fixed blade support 23 of the crusher 13 in advance, waiting for the waste to enter. After the waste slides into the crusher 13, it is sheared and crushed by the high-speed rotating fixed blade 24.

[0047] Example 2: Please refer to Figure 2 、 Figure 3 A photovoltaic encapsulation film production device with a recycling structure, wherein the left connecting shaft 29 of the driving module 32 is connected to the casting roller 12, the cooling roller group 18, the fixed blade support seat 23 and the right side of the screw 10 to provide driving force, and the right side of the driving module 32 is connected to the external power supply through the wire 25;

[0048] The right side of the driving module 32 is embedded with a connecting shaft 29, and the right side of the connecting shaft 29 is connected to a driving gear 33. The right side of the driving gear 33 is connected to the left side of the motor shaft 2, and the right side of the motor shaft 2 is connected to the driving motor 31.

[0049] The mixing shaft 7 is provided with stirring blades 8 evenly mounted on the circumference thereof. The right side of the mixing shaft 7 is connected to the left side of the connecting shaft 29 in the driving module 32, and the driving module 32 provides the stirring power for the mixing shaft 7.

[0050] Furthermore, the frame 1 provides an installation position for the mixing and stirring shaft 7, and the mixing and stirring shaft 7 provides an installation position for the stirring blade 8. When the power is turned on, the fan 5 starts to generate a directional airflow. On the one hand, it can remove light impurities in the material through airflow screening, and on the other hand, it forms an air pressure difference to assist the film raw materials or semi-finished products to accurately enter the next unit, reducing transmission blockage. At the same time, the mixing and stirring shaft 7, the screw 10, the cooling roller group 18 and the conveying shaft 20 and the right side of the outside and the right side of the inside of the frame 1 are all embedded and connected with a drive module 32 to provide power for the moving parts of each unit. When the power supply is turned on and the device is started, the drive motor 31 in the drive module 32 receives the signal of the control system, outputs torque and transmits it to the drive gear 33 on the right side through the motor shaft 2. The drive gear 33 is engaged with the drive gear 33 on the right side of the connecting shaft 29 to transmit the rotational power to the connecting shaft 29. The connecting shaft 29 The left side is fixedly connected to the moving parts of each unit, and ultimately drives these parts to operate. When external raw materials enter through the feed hopper 6, driven by the drive module 32, the mixing and stirring shaft 7 drives the spiral stirring blades 8 on both sides to rotate at high speed. The left blade pushes the raw materials to the middle of the cavity, and the right blade transports the raw materials toward the output end, forming a circulating stirring path, so that raw materials of different batches and different components are fully mixed to ensure that the raw material composition is uniform. The raw materials that have been fully stirred and purified move to the output port at the bottom under the axial thrust of the spiral blades, and are finally transported to the bottom through a sealed pipe to enter the next production link. At the same time, the mixing and stirring shaft 7 is started synchronously with the fan 5 at the right connection inside the frame 1, and the generated airflow enters the cavity from the left. On the one hand, it pushes the evenly mixed raw materials into the extruder 9 through the bottom notch, and on the other hand, the airflow flows in the gap between the raw materials to accelerate the drying of the raw materials.

[0051] Example 3: Please refer to Figure 3 、 Figure 4 and Figure 5 A photovoltaic encapsulation film production device with a recycling structure, wherein a screw 10 is connected to the inner wall of the right side of the extruder 9, and a die 11 is connected to the bottom of the extruder 9. The raw materials are stirred evenly by the mixing and stirring shaft 7 and then enter the extruder 9 from the bottom notch;

[0052] The screw 10 is powered by a drive module 32. The right side of the screw 10 is connected to the connecting shaft 29. The right side of the connecting shaft 29 is connected to the drive gear 33. The right side of the drive gear 33 is connected to the left side of the drive motor 31. The drive module 32 connected to the screw 10 is embedded in the right inner wall of the extruder 9. The connecting shaft 29 is provided between the drive module 32 and the screw 10 to transmit the driving force.

[0053] The first gear 30 is meshed with the second gear 3, the second gear 3 is meshed with the third gear 4, the upper casting roller 12 is connected to the first gear 30, the lower casting roller 12 is connected to the third gear 4, the first gear 30 and the third gear 4 are meshed in the middle to transmit power through the second gear 3, the right side of the first gear 30 is connected to the left side of the motor shaft 2, the right side of the motor shaft 2 is connected to the left side of the drive motor 31, the drive motor 31 is connected to the external power supply through the wire 25, and the power is transmitted through the motor shaft 2 to drive the upper first gear 30 to rotate, the second gear 3 is rotated by meshing with the first gear 30, and the third gear 4 is rotated by meshing with the second gear 3;

[0054] Furthermore, the frame 1 provides an installation position for the extruder 9 and the casting roller 12, and the extruder 9 provides an installation position for the screw 10 and the die 11. The raw material enters the extruder 9 through the bottom notch of the mixing and stirring shaft 7, and is extruded through the screw 10 and the die 11 to form a film. The screw 10 is spiral, and its function is to push the raw material to generate pressure through spiral extrusion to ensure that the raw material is evenly mixed and moves to the output end. After the raw material enters the extruder 9 through the bottom notch of the mixing and stirring shaft 7, it is pushed by the screw 10 and extruded through the die 11 at the bottom of the extruder 9 to form a continuous film substrate. The operation of the rod 10 is powered by the driving module 32; the film substrate extruded from the die 11 at the bottom of the extruder 9 first falls on the upper conveyor belt 22 of the upper casting roller 12. At this time, the casting roller 12 rotates in the opposite direction under the drive of the gear set, driving the conveyor belt 22 to move synchronously. The film is rolled by the casting roller 12 during the transmission process to eliminate surface wrinkles. During the film transmission process, when the casting roller 12 and the conveyor belt 22 are rotating, if there are defective products with a thickness not exceeding the preset threshold value of 0.02mm~0.08mm, the infrared sensor 35 will detect an abnormal signal. The signal is transmitted to the control circuit 36 ​​through the wire 25, and the control circuit 36 ​​immediately sends a power-on instruction to the electromagnet 37. The electromagnet 37 is energized to generate a magnetic field, which attracts the armature structure at the bottom of the flip baffle 34 and drives the flip baffle 34 to flip downward by 30°~45°, forming a guiding slope with the conveyor belt 22. The defective products slide into the crusher 13 along the flip slope of the flip baffle 34, while the qualified films continue to move downward with the conveyor belt 22, and are connected to the cooling roller group 18 through the lower conveyor belt 22 of the lower casting roller 12. After the waste in the crusher 13 accumulates to a certain amount, The high-speed blades of the crusher 13 crush the waste into fine particles. The crushed particles are filtered through the screen 14 to remove large impurities and are transported to the recycling extruder 17. The recycling extruder 17 heats and melts the particles for a second time, and removes pollutants such as dust and metal debris in the particles through the internal precision filtering device. Finally, the raw materials are subjected to continuous spiral extrusion force through the screw 10, and are gradually compacted and plasticized. The plasticized film is transported to the conveyor belt 22 through the bottom notch, and finally transported to the cooling roller group 18, realizing the closed-loop recycling of waste materials and reducing raw material waste.

[0055] Example 4: Please refer to Figure 6 、 Figure 7 and Figure 8A photovoltaic encapsulation film production device with a recycling structure, wherein a screen 14 is installed on the upper side of the recycling extruder 17, and a hot melt furnace 15 is connected to the lower side of the screen 14. An electric stirrer 28 is installed on the upper side of the hot melt furnace 15, and an electric heating pipe 27 is installed on the upper left side next to the electric stirrer 28. A cooling port 26 is connected to the lower side of the hot melt furnace 15, and a filter 16 is connected to the lower side of the cooling port 26. The screw 10 is embedded and connected to the right side of the recycling extruder 17, and the drive module 32 is connected to the right side of the screw 10 through the connecting shaft 29;

[0056] The top notch of the cooling roller group 18 is connected to the bottom notch of the casting roller 12;

[0057] A cooling roller group 18 is connected and installed on the right side of the frame, and a conveyor belt 22 is installed on the cooling roller group 18. One group of conveyor belts 22 of the cooling roller group 18 is connected to the lower conveyor belt 22 of the lower casting roller 12, and one group of conveyor belts 22 is connected to the outer front notch of the recycling extruder 17. The rear side of the conveying shaft 20 is connected to the cooling roller group 18 through the conveyor belt 22, and the front side of the conveying shaft 20 is connected to the outer rear side of the intelligent winder 21 through the conveyor belt 22. An infrared sensor 35 is installed on the left side of the intelligent winder 21, and the infrared sensor 35 is connected to the control circuit 36 ​​through the wire 25. The control circuit 36 ​​is connected to the power supply through the wire 25. A thickness gauge 19 is connected to the bottom of the intelligent winder 21, and a conveyor shaft 20 is connected to the upper side of the thickness gauge 19. A fan 5 is connected to the connection between the inner side of the frame 1 and the mixing stirring shaft 7, the casting roller 12, the crusher 13, the recycling extruder 17 and the thickness gauge 19;

[0058] Furthermore, the frame 1 provides an installation position for the crusher 13, the crusher 13 provides an installation position for the fixed blade support seat 23 and the fixed blade 24, the frame 1 provides an installation position for the recycling extruder 17, the recycling extruder 17 provides an installation position for the screen 14, the hot melting furnace 15, the cooling port 26, the electric stirring 28, the electric heating tube 27, the filter 16 and the screw 10, three fixed blade support seats 23 are installed in parallel on the right side of the crusher 13, and four fixed blades 24 are evenly installed on each fixed blade support seat 23 along the circumferential direction. The fixed blades 24 are sharp alloy blades that can complete the crushing action. The drive module 32 is installed at the bottom inside the frame 1 and on the right side of the crusher 13. The right shaft of the fixed blade support seat 23 The end is fixedly connected to the connecting shaft 29 on the left side of the driving module 32. The driving module 32 is connected to the external power supply through the wire 25 to provide continuous driving force for the crusher 13, ensuring that the blade rotates at high speed to crush the waste. The crushed particles discharged from the crusher 13 first enter the screen 14 on the top of the recycling extruder 17. The screen 14 intercepts particles with excessive particle size through slight vibration. The intercepted particles will flow back to the crusher 13 and be crushed again. The fine particles that meet the requirements will fall into the hot melting furnace 15 below through the mesh of the screen 14. The particles entering the hot melting furnace 15 are heated to a molten state under the action of the electric heating tube 27. The temperature is set according to the characteristics of the film raw materials. EVA and POE raw materials are about 150-180 ° C , EVA and POE raw materials are two common photovoltaic encapsulation film materials made of ethylene / vinyl acetate copolymer and ethylene-octene copolymer, respectively, with the addition of cross-linking agents and coupling agents. At the same time, the electric stirring 28 is started, and the power is provided by the wire 25. The stirring paddle rotates continuously in the molten material. On the one hand, the material is heated evenly to avoid local overheating and performance degradation; on the other hand, the bubbles in the material are discharged to ensure that the molten material has a dense texture. The molten material flows from the bottom of the hot melting furnace 15 into the cooling port 26. The inside of the cooling port 26 is cooled by circulating water to slightly reduce the temperature of the material, which is convenient for subsequent filtration. The cooled material then enters the filter screen 16, and the filter screen 16 passes through multiple The filter medium removes the remaining fine impurities in the material to ensure the purity of the material; the clean molten material after being filtered by the filter screen 16 falls into the screw 10 area of ​​the recycling extruder 17. The drive module 32 drives the screw 10 to rotate, and the material is pushed to the left by the spiral thrust. Finally, the material is discharged through the discharge port on the left side of the recycling extruder 17 and transported to the cooling roller group 18 via the conveyor belt 22. When the cooling roller group 18 passes the thickness gauge 19 to test the film, the conveyor belt 22 of the cooling roller group 18 maintains the main path and connects with the conveyor belt 22 connected to the lower casting roller 12. The film is transported to the intelligent winder 21 via the conveyor shaft 20; when the thickness gauge 19 detects that the thickness is not within the preset threshold of 0.2mm~0.For film segments within 8mm, the drive module 32 connected to the cooling roller assembly 18 rotates in the opposite direction, directing the waste material toward the front notch of the recycling extruder 17, where it enters the recycling process. Film with acceptable thickness, after being shaped by the cooling roller assembly, is pulled by the conveyor shaft 20 to the intelligent winder 21. An infrared sensor 35 at the entrance of the intelligent winder 21 detects and identifies the film's length, transmitting this information to the control circuit 36 ​​via a wire 25. The control circuit 36 ​​receives the signal and automatically rewinds and packages the film according to preset instructions to meet different required winding lengths.

[0059] Example 5: Please refer to Figure 1 、 Figure 2 and Figure 6 A method for using a photovoltaic encapsulation film production device with a recycling structure, the method comprising the following steps:

[0060] S1, the raw materials enter the mixing and stirring shaft 7 through the feed hopper 6, complete the mixing and drying process, make the raw materials evenly mixed and dry to meet the standards, and then transport them through the bottom gap;

[0061] S2, the screw 10 receives the mixed raw materials from the mixing and stirring shaft 7, and squeezes the raw materials through the die 11 to form a continuous film substrate;

[0062] S3, the casting roller 12 and the conveyor belt 22 roll and flatten the received film substrate, and at the same time separate the waste generated during the production process; the waste is processed by the crusher 13 and the recycling extruder 17 to convert it into reusable recycled material, and then the new film and the recycled film are transported together to the cooling roller group 18 via the conveyor belt 22;

[0063] S4, the cooling roller group 18 cools and shapes the received film, and the thickness gauge 19 detects whether the film thickness meets the standard. Finally, the intelligent winder 21 winds the qualified film into a coil of the required length.

[0064] The method of using S3 is as follows:

[0065] S31, the film substrate is rolled and flattened by the casting roller 12 and initially cooled; during the transmission process, unqualified products and other waste materials are separated and transported to the crusher 13 through the flip baffle 34;

[0066] S32, the waste is crushed into fine particles in the crusher 13 by the fixed blade 24 driven by the drive module 32, and then filtered through the screen 14 to remove large impurities before entering the hot melting furnace 15 of the recycling extruder 17;

[0067] S33, the electric heating tube 27 in the hot melting furnace 15 melts the particles, and the electric stirring 28 ensures that the molten material is uniform and free of bubbles; after the molten material is initially cooled by the cooling port 26, it passes through the filter 16 to remove fine impurities, and finally becomes reusable recycled material under the push of the screw 10, and is transported to the cooling roller group 18 together with the new film via the conveyor belt 22.

[0068] Furthermore, the external raw materials first enter through the feed hopper 6, and the mixing and drying processes are completed by the mixing and stirring shaft 7 and the fan 5. The power provided by the drive module 32 connected to the power supply through the wire 25 drives the mixing and stirring shaft 7 to drive the stirring blade 8 to rotate continuously, so that the raw materials of different components are fully mixed and uniformly mixed; at the same time, the right fan 5 generates a directional airflow, which on the one hand accelerates the evaporation of water in the raw materials to ensure the drying effect, and on the other hand pushes the raw materials to move to the output end of the unit. The pretreated raw materials are accurately transported to the extruder 9 through the bottom notch pipe. Under the high-speed rotation of the screw 10 driven by the drive module 32, the raw materials are subjected to continuous spiral extrusion force and are gradually compacted and plasticized. The film is then extruded through the die 11 to form a continuous film substrate. The substrate is then transported by the conveyor belt 22 to the casting roller 12. Driven by the gear train, the casting roller 12 rotates in the opposite direction. The contact between the roller surface and the film exerts a uniform rolling pressure on the substrate, which not only flattens the film surface and eliminates wrinkles that may occur during the extrusion process, but also achieves a preliminary cooling of the substrate through the cooling effect of the roller body, laying the foundation for subsequent processing. After being processed by the casting roller 12, the film substrate is further transported by the conveyor belt 22. During this process, the infrared sensor 35 detects the thickness of the film on the casting roller 12. If the thickness is not within the set threshold of 0.2mm~0.Within 8mm, the infrared sensor 35 transmits the abnormal signal to the control circuit 36 ​​through the wire 25. After receiving the abnormal signal, the control circuit 36 ​​immediately sends a power-on command to the electromagnet 37. The electromagnet 37 is energized to generate a magnetic field, which adsorbs the armature structure at the bottom of the flip baffle 34 and drives the flip baffle 34 to flip downward 30°~45°, forming a guiding slope with the conveyor belt 22. The abnormal film segment moves with the conveyor belt 22 and slides along the flip slope of the flip baffle 34 to be transported into the crusher 13. The waste is in the crusher 13, and the fixed blade 24 driven by the drive module 32 is connected to the housing. The moving blades of the wall cooperate with each other to perform high-speed shearing and crushing, and finally form fine granular materials. The crushed particles are first screened to remove impurities that are too large or do not meet the specifications, and then pass through the screen 14 to further filter out large impurities, and then enter the hot melting furnace 15 of the recycling extruder 17; in the hot melting furnace 15, the electric heating tube 27 continues to heat, heating the granular material to a molten state, and at the same time, the electric stirrer 28 stirs at a uniform speed to ensure that the composition of the molten material is uniform and avoid the generation of bubbles. The molten material then passes through the cooling port 26, and after preliminary cooling to a suitable viscosity, it passes through the filter. 16 is finely filtered to completely remove the fine impurities therein. Finally, the purified molten material is pushed by the screw 10 and processed into a directly reusable recycled film material. It is transported to the cooling roller group 18 through the conveyor belt 22 together with the new film processed by the casting roller 12. The new film and the recycled film first pass through the cooling roller group 18 to cooperate with each other, and the film is shaped by the fan 5 to ensure the flatness and dimensional stability of the film. The cooled film is accurately transmitted to the thickness gauge 19 by the conveyor shaft 20. The thickness gauge 19 measures the thickness of the film in real time to determine whether it is Film that fails testing, within a preset threshold of 0.2mm to 0.8mm, is recirculated to the crusher 13 for re-crushing via the drive motor 31 of the drive module 32, which rotates in the reverse direction, causing the connecting shaft 29 to drive the conveyor shaft 20 in the reverse direction. Qualified film is detected by the infrared sensor 35 on the left side of the intelligent winder 21, which then transmits this information to the control circuit 36 ​​via the wire 25. The control circuit 36 ​​receives the signal and automatically rewinds and packages the film into standard rolls according to preset instructions, completing the entire photovoltaic encapsulation film production process.

[0069] Working principle: The working principle of the photovoltaic encapsulation film production device with a recycling structure is to achieve continuous production of film and closed-loop recycling of waste through the coordinated operation of various units. External raw materials enter through the feed hopper 6, and the driving force is provided by the conductor 25. The driving module 32 drives the mixing stirring shaft 7 to evenly mix the raw materials through the stirring blades 8. At the same time, the fan 5 on the right generates airflow, which on the one hand accelerates the drying of the raw materials, and on the other hand assists the raw materials to move to the output end. The pretreated raw materials are transported to the extruder 9 through the bottom notch pipe. Under the action of the screw 10 driven by the driving module 32, pressure is generated through spiral extrusion, so that the raw materials are extruded through the die 11 to form a continuous film substrate. The film substrate is transported by the casting roller 12 and the conveyor belt 22. The casting roller 12 rotates in the opposite direction driven by the gear set to crush, flatten and preliminarily cool the film to eliminate surface wrinkles. The scraps and unqualified products separated during the transmission process enter the crusher 13 through the flip baffle 34 and are driven by the fixed blade 24 driven by the driving module 32. The particles are crushed into small particles, which are screened and then enter the recycling extruder 17. The recycling extruder 17 performs secondary processing on the particles. The screen 14 filters out large impurities. The hot melting furnace 15 melts the particles under the action of the electric heating tube 27. The electric stirring 28 ensures that the molten material is uniform and free of bubbles. After the cooling port 26 initially cools down, the filter 16 removes fine impurities and finally becomes reusable recycled material under the push of the screw 10. The new film from the casting roller 12 and the recycled film from the recycling extruder 17 are transported to the cooling On the roller group 18, the cooling roller group 18 is used to cool and shape the film to ensure the flatness and stability of the film. The cooled film is transmitted to the thickness gauge 19 by the conveyor shaft 20, and the laser detects whether the thickness is within the preset threshold value of 0.2mm~0.8mm. The unqualified products are returned to the crusher 13 for reprocessing by the driving motor 31 of the driving module 32 rotating in the reverse direction so that the connecting shaft 29 drives the conveyor shaft 20 to rotate in the reverse direction. The qualified products are wound into standard coils of the required length by the intelligent winder 21 to complete the final production.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A photovoltaic encapsulation film production device with a recycling structure, characterized by: The invention comprises a frame (1), a casting roller (12), a crusher (13) and a recycling extruder (17), wherein a feed hopper (6) is installed on the top of the inner side of the frame (1), a horizontal mixing and stirring shaft (7) is installed on the right side of the inner side of the frame (1) and connected to the bottom of the feed hopper (6), an extruder (9) is installed on the outer lower side of the mixing and stirring shaft (7), a pair of upper and lower offset casting rollers (12) are installed on the outer lower side of the extruder (9) and connected to the right side of the inner side of the frame (1), and the casting rollers (12) are connected to each other. Conveyor belts (22) are connected and installed on both the upper and lower sides. A first gear (30), a second gear (3) and a third gear (4) are connected and installed on the right side of the casting roller (12). The first gear (30) is connected to the driving motor (31) through the motor shaft (2). The top of the upper conveyor belt (22) of the casting roller (12) is connected to the die (11) at the bottom of the extruder (9) for transmitting the formed film. The bottom of the lower conveyor belt (22) of the casting roller (12) is connected to the top of the cooling roller group (18).

2. The photovoltaic encapsulation film production device with a recycling structure according to claim 1, characterized in that: A crusher (13) is connected and installed between the inner side of the frame (1) and the casting roller (12); an infrared sensor (35) is installed on the upper side of the casting roller (12); the infrared sensor (35) is connected to the control circuit (36) through the wire (25); the control circuit (36) is connected to the power supply through the wire (25); a flip baffle (34) is installed on the crusher (13) and the lower side of the conveyor belt (22); an electromagnet (37) is embedded in the connection between the bottom of the flip baffle (34) and the bottom notch; the electromagnet ( 37) is connected to the control circuit (36) through a wire (25), the bottom notch of the crusher (13) is connected to the top screen (14) of the recycling extruder (17), three fixed knife support seats (23) are installed in parallel on the right side of the crusher (13), and four fixed blades (24) are evenly installed on each fixed knife support seat (23). The drive module (32) is connected and installed on the right side of the crusher (13) at the bottom of the casting roller (12), and the right side of the fixed knife support seat (23) is connected to the connecting shaft (29) of the drive module (32).

3. The photovoltaic encapsulation film production device with a recycling structure according to claim 2, characterized in that: The left side connecting shaft (29) of the driving module (32) is connected to the casting roller (12), the cooling roller group (18), the fixed knife support seat (23) and the right side of the screw (10) to provide driving force, and the right side of the driving module (32) is connected to the external power supply through the wire (25); A connecting shaft (29) is embedded and installed on the right side of the driving module (32), a driving gear (33) is connected and installed on the right side of the connecting shaft (29), the right side of the driving gear (33) is connected to the left side of the motor shaft (2), and the right side of the motor shaft (2) is connected to the driving motor (31).

4. The photovoltaic encapsulation film production device with a recycling structure according to claim 1, characterized in that: The mixing and stirring shaft (7) is evenly provided with stirring blades (8) in a circumferential direction. The right side of the mixing and stirring shaft (7) is connected to the left side of the connecting shaft (29) in the driving module (32). The driving module (32) provides stirring power for the mixing and stirring shaft (7).

5. The photovoltaic encapsulation film production device with a recycling structure according to claim 1, characterized in that: A screw (10) is connected to the inner wall of the right side of the extruder (9), and a die (11) is connected to the bottom of the lower side of the extruder (9). The raw materials are stirred evenly by the mixing and stirring shaft (7) and then enter the extruder (9) through the bottom notch. The screw (10) is powered by a driving module (32). The right side of the screw (10) is connected to the connecting shaft (29). The right side of the connecting shaft (29) is connected and installed with a driving gear (33). The right side of the driving gear (33) is connected and installed with a left side of a driving motor (31). The driving module (32) connected to the screw (10) is embedded in the right inner wall of the extruder (9). A connecting shaft (29) is provided between the driving module (32) and the screw (10) to transmit the driving force.

6. The photovoltaic encapsulation film production device with a recycling structure according to claim 1, characterized in that: The first gear (30) is meshed with the second gear (3), and the second gear (3) is meshed with the third gear (4). The upper casting roller (12) is connected to the first gear (30), and the lower casting roller (12) is connected to the third gear (4). The first gear (30) and the third gear (4) are meshed in the middle to transmit power through the second gear (3). The right side of the first gear (30) is connected to the left side of the motor shaft (2), and the right side of the motor shaft (2) is connected to the left side of the driving motor (31). The driving motor (31) is connected to an external power supply through a wire (25). The power is transmitted through the motor shaft (2) to drive the upper first gear (30) to rotate. The second gear (3) rotates by meshing with the first gear (30), and the third gear (4) rotates by meshing with the second gear (3).

7. The photovoltaic encapsulation film production device with a recycling structure according to claim 2, characterized in that: A screen (14) is installed on the upper side of the recycling extruder (17), a hot melt furnace (15) is connected and installed on the lower side of the screen (14), an electric stirrer (28) is installed on the upper side of the hot melt furnace (15), an electric heating pipe (27) is installed on the upper left side next to the electric stirrer (28), a cooling port (26) is connected and installed on the lower side of the hot melt furnace (15), a filter (16) is connected and installed on the lower side of the cooling port (26), a screw (10) is embedded and connected to the right side of the recycling extruder (17), and a drive module (32) is connected to the right side of the screw (10) through a connecting shaft (29).

8. The photovoltaic encapsulation film production device with a recycling structure according to claim 7, characterized in that: The top notch of the cooling roller group (18) is connected to the bottom notch of the casting roller (12); The right side of the frame (1) is connected to a cooling roller group (18), a conveyor belt (22) is installed on the cooling roller group (18), one conveyor belt (22) of the cooling roller group (18) is connected to the lower conveyor belt (22) of the lower casting roller (12), one conveyor belt (22) is connected to the outer front notch of the recycling extruder (17), the rear side of the conveying shaft (20) is connected to the cooling roller group (18) through the conveyor belt (22), and the front side of the conveying shaft (20) is connected to the cooling roller group (18) through the conveyor belt (2 2) connected to the rear side of the outside of the intelligent winder (21), a thickness gauge (19) is connected and installed at the bottom of the inside of the intelligent winder (21), an infrared sensor (35) is installed on the left side of the inside of the intelligent winder (21), a conveying shaft (20) is connected and installed on the upper side of the thickness gauge (19), and a fan (5) is connected and installed at the connection between the inner side of the frame (1) and the mixing and stirring shaft (7), the casting roller (12), the crusher (13), the recycling extruder (17) and the thickness gauge (19).

9. A method for using a photovoltaic encapsulation film production device with a recycling structure, applicable to the photovoltaic encapsulation film production device with a recycling structure according to any one of claims 1 to 8, characterized in that: The method of use comprises the following steps: S1, the raw materials enter the mixing and stirring shaft (7) through the feed hopper (6), complete the mixing and drying process, and after the raw materials are mixed evenly and dried to the standard, they are transported through the bottom gap; S2, the screw (10) receives the uniformly mixed raw materials from the mixing and stirring shaft (7), and extrude the raw materials through the die (11) to form a continuous film substrate; S3, the casting roller (12) and the conveyor belt (22) perform rolling and flattening on the received film substrate, and at the same time separate the waste generated in the production process; the waste is processed by the crusher (13) and the recycling extruder (17) to convert it into reusable recycled material, and then the new film and the recycled film are transported together to the cooling roller group (18) through the conveyor belt (22); S4, the cooling roller group (18) cools and shapes the received film, and uses the thickness gauge (19) to detect whether the film thickness meets the standard, and finally the intelligent winding machine (21) winds the qualified film into a coil of the required length.

10. The method for using the photovoltaic encapsulation film production device with a recycling structure according to claim 9, characterized in that: The method of using S3 is as follows: S31, the film substrate is rolled and flattened by the casting roller (12) and initially cooled; during the transmission process, unqualified products and other waste materials are separated and transported to the crusher (13) through the flip baffle (34); S32, the waste is crushed into fine particles in the crusher (13) by the fixed blade (24) driven by the drive module (32), and then filtered through the screen (14) to remove large impurities and enter the hot melting furnace (15) of the recycling extruder (17); S33, the electric heating tube (27) in the hot melting furnace (15) melts the particles, and the electric stirring (28) ensures that the molten material is uniform and free of bubbles; after the molten material is initially cooled through the cooling port (26), fine impurities are removed through the filter (16), and finally it becomes a reusable recycled material under the push of the screw (10), and is transported to the cooling rod group (18) together with the new film through the conveyor belt (22).

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