EVA (Ethylene Vinyl Acetate) white film and black film co-extrusion adhesive film extrusion equipment

Abstract

The utility model discloses EVA white film and black film co-extrusion adhesive film extrusion equipment, and relates to the field of EVA white film and black film co-extrusion adhesive film extrusion, the EVA white film and black film co-extrusion adhesive film extrusion equipment comprises a bottom plate, a material storage barrel is fixedly mounted on one side of the upper end of the bottom plate, a first connecting pipe is fixedly mounted in the material storage barrel, and a mounting block is fixedly mounted at one end, far away from the material storage barrel, of the first connecting pipe; a three-way pipe is rotatably mounted in the mounting block, a rotating shaft is integrally formed at one end of the three-way pipe, a first connecting block is fixedly mounted at the end, away from the three-way pipe, of the rotating shaft, a fixing seat is fixedly mounted on one side of the upper end of the bottom plate, a rectangular plate is integrally formed at the upper end of the fixing seat, and a threaded rod is rotatably mounted in the rectangular plate; a rotating plate is fixedly installed at one end of the threaded rod, and the outer ring of the threaded rod is in threaded connection with a driving motor. By the adoption of the structure, switching of a white film raw material channel or a black film raw material channel can be achieved by accurately controlling the rotating angle of the three-way pipe.

Description

Technical Field

[0001] This utility model belongs to the field of EVA white film and black film co-extrusion film extrusion, and specifically relates to an EVA white film and black film co-extrusion film extrusion equipment. Background Technology

[0002] In the field of photovoltaic module encapsulation, EVA film is widely used due to its excellent light transmittance, adhesion, and weather resistance. With the increasing demand for diversified photovoltaic module designs, two-color co-extruded films with light-shielding, heat dissipation, or specific optical properties have become a research focus. Existing EVA film extrusion equipment is mostly designed for single-color film production, while two-color co-extrusion requires precise feeding, flow channel distribution, and co-extrusion molding of different colored raw materials. Developing a device that integrates the storage, quantitative conveying, co-extrusion flow channel switching, and composite extrusion functions for both white and black film raw materials is of great significance for improving the functionality and production efficiency of photovoltaic modules. Its core lies in optimizing the process control and structural design of multi-material co-extrusion.

[0003] Existing technologies have specifically developed some EVA white film and black film co-extrusion equipment. For example, Chinese patent with announcement number "CN221985773U" discloses a "new type of EVA film extrusion equipment". It connects the delivery pipe and the metering pipe through a three-way pipe. A certain amount of film can be drawn into the inside of the metering pipe by the cooperation of the first cylinder and the piston. The three-way pipe is driven to rotate by the cooperation of the third cylinder, rack and pinion, which closes the delivery pipe and connects the metering pipe and the flow pipe. The film inside the metering pipe will flow out through the flow pipe, the feeding pipe and the discharge pipe, so as to achieve quantitative control of the amount of film discharged, which is convenient to use and further improves the product quality.

[0004] Although the delivery pipe and the metering pipe are connected by a three-way pipe, and a certain amount of adhesive film can be drawn into the metering pipe by the first cylinder and piston, and the three-way pipe is driven to rotate by the third cylinder, rack and pinion, which closes the delivery pipe and connects the metering pipe to the flow pipe, the adhesive film inside the metering pipe will flow out through the flow pipe, feed pipe and discharge pipe, so as to achieve quantitative control of the amount of adhesive dispensed, which is convenient to use and further improves product quality, the toothed plate and rack cannot be effectively separated in the above structure. This may cause accidental contact by the operator, which will disrupt the position of the three-way pipe. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide an EVA white film and black film co-extrusion film extrusion equipment to solve the problem of EVA white film and black film co-extrusion film extrusion.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] An EVA white and black film co-extrusion extrusion device includes a base plate. A storage tank is fixedly installed on one side of the upper end of the base plate. A first connecting pipe is fixedly installed inside the storage tank. An installation block is fixedly installed at the end of the first connecting pipe away from the storage tank. A T-shaped pipe is rotatably installed inside the installation block. A rotating shaft is integrally formed at one end of the T-shaped pipe. The first connecting block is fixedly installed at the end of the rotating shaft away from the T-shaped pipe. A fixed seat is fixedly installed on one side of the upper end of the base plate. A rectangular plate is integrally formed on the upper end of the fixed seat. A threaded rod is rotatably installed inside the rectangular plate. A rotating plate is fixedly installed at one end of the threaded rod. A drive motor is threadedly connected to the outer ring of the threaded rod. A second connecting block is fixedly installed on the output shaft of the drive motor. A flow cylinder is fixedly installed on the upper end of the installation block. A first cylinder is fixedly installed on the upper end of the flow cylinder. A second connecting pipe is fixedly connected to the bottom of the installation block. An extrusion cylinder is fixedly installed at the end of the second connecting pipe away from the installation block. A second cylinder is fixedly installed on the upper end of the extrusion cylinder. An extrusion tube is integrally formed at the bottom of the extrusion cylinder.

[0008] As a preferred technical solution, a feed pipe is provided on the side of the upper end of the storage tank away from the first connecting pipe, a support base is fixedly installed at the center of the upper end of the base plate, a support block is fixedly installed on the upper end of the support base, and the outer ring of the first connecting pipe is placed inside the support block.

[0009] As a preferred technical solution, the bottom of the drive motor is integrally formed with a movable seat, the movable seat has an internal threaded groove, the movable seat slides inside the rectangular plate, and the threaded rod is threadedly connected to the movable seat through the internal threaded groove.

[0010] As a preferred technical solution, the mounting block has a rotating groove inside, and sealing strips are provided on both sides of the inner ring of the rotating groove, and sealing grooves are provided on both sides of the outer ring of the tee pipe.

[0011] As a preferred technical solution, the tee pipe is rotatably installed inside the mounting block through a rotating groove opened inside the mounting block, the sealing strip rotates inside the sealing groove, and the first connecting block and the second connecting block are engaged and connected.

[0012] As a preferred technical solution, protective covers are fixedly installed on both sides of the mounting block. A circular groove is opened in the center of one of the protective covers. The rotating shaft is fixedly installed with a first connecting block through the circular groove. The first cylinder output shaft is fixedly installed with a first piston. The first piston is slidably installed inside the inner ring of the flow cylinder.

[0013] As a preferred technical solution, the second cylinder output shaft passes through the upper end of the extrusion cylinder and is fixedly installed with a second piston, which is slidably installed inside the inner ring of the extrusion cylinder.

[0014] In summary, the present invention has the following main advantages:

[0015] First, when it is necessary to switch between white film and black film raw materials, the rotating plate drives the threaded rod to rotate. The threaded rod is connected to the threaded groove in the moving seat at the bottom of the drive motor, which causes the drive motor to slide left and right inside the rectangular plate, thereby driving the T-tube to rotate. The rotating groove inside the mounting block and the sealing strips on both sides of the inner ring of the rotating groove cooperate with the sealing grooves on both sides of the outer ring of the T-tube to ensure the sealing of the connection part during the rotation of the T-tube and prevent raw material leakage. By precisely controlling the rotation angle of the T-tube, the switching of the white film or black film raw material channel can be realized.

[0016] Secondly, the quantitatively controlled raw material enters the extrusion cylinder through the second connecting pipe. The second cylinder at the top of the extrusion cylinder drives the second piston to slide inside the extrusion cylinder through the output shaft. The second piston squeezes the raw material downward, causing it to be extruded through the extrusion tube at the bottom of the extrusion cylinder. During the extrusion process, the second cylinder provides stable pressure to uniformly extrude the raw material and form a continuous EVA film. By adjusting the pressure of the second cylinder and the raw material extraction amount of the first cylinder, the thickness of the film and the extrusion speed can be precisely controlled to meet different production needs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the mounting block of this utility model;

[0019] Figure 3 This is a utility model Figure 2 A magnified structural diagram of part A;

[0020] Figure 4 This is a schematic diagram of the rectangular plate structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the flow cylinder and extrusion cylinder of this utility model.

[0022] Reference numerals: 1. First cylinder; 2. Rotating shaft; 3. First connecting block; 4. Flow cylinder; 5. Drive motor; 6. First connecting pipe; 7. Feed pipe; 8. Protective cover plate; 9. Sealing groove; 10. T-pipe; 11. Second cylinder; 12. Circular groove; 13. Second connecting pipe; 14. Extrusion cylinder; 15. Extrusion pipe; 16. Fixed seat; 17. Support seat; 18. Support block; 19. Storage tank; 20. Base plate; 21. Mounting block; 22. Rotating plate; 23. Moving seat; 24. Rectangular plate; 25. Threaded rod; 26. Internal threaded groove; 27. First piston; 28. Rotating groove; 29. ​​Second piston; 30. Sealing strip; 31. Second connecting block. Detailed Implementation Example

[0023] refer to Figures 1-5 This embodiment of an EVA white and black film co-extrusion extrusion device includes a base plate 20. A storage tank 19 is fixedly installed on one side of the upper end of the base plate 20. A first connecting pipe 6 is fixedly installed inside the storage tank 19. An installation block 21 is fixedly installed at the end of the first connecting pipe 6 away from the storage tank 19. A three-way pipe 10 is rotatably installed inside the installation block 21. A rotating shaft 2 is integrally formed at one end of the three-way pipe 10. A first connecting block 3 is fixedly installed at the end of the rotating shaft 2 away from the three-way pipe 10. A fixing seat 16 is fixedly installed on one side of the upper end of the base plate 20. A rectangular plate 24 is integrally formed on the upper end of the fixing seat 16. A threaded rod 25 is rotatably mounted inside the rectangular plate 24. A rotating plate 22 is fixedly mounted at one end of the threaded rod 25. A drive motor 5 is threadedly connected to the outer ring of the threaded rod 25. A second connecting block 31 is fixedly mounted on the output shaft of the drive motor 5. A flow cylinder 4 is fixedly mounted on the upper end of the mounting block 21. A first cylinder 1 is fixedly mounted on the upper end of the flow cylinder 4. A second connecting pipe 13 is fixedly connected to the bottom of the mounting block 21. An extrusion cylinder 14 is fixedly mounted at the end of the second connecting pipe 13 away from the mounting block 21. A second cylinder 11 is fixedly mounted on the upper end of the extrusion cylinder 14. An extrusion tube 15 is integrally formed at the bottom of the extrusion cylinder 14.

[0024] refer to Figures 1 to 5 A feed pipe 7 is provided on the side of the upper end of the storage tank 19 away from the first connecting pipe 6. A support base 17 is fixedly installed at the center of the upper end of the bottom plate 20. A support block 18 is fixedly installed on the upper end of the support base 17. The outer ring of the first connecting pipe 6 is placed inside the support block 18. The outer ring of the first connecting pipe 6 is placed inside the support block 18 at the upper end of the support base 17 to provide stable support for the connecting pipe, ensure the stability of the pipeline during the raw material transportation process, and avoid shaking or deviation that affects the stability of the raw material transportation.

[0025] refer to Figures 2 to 4 The bottom of the drive motor 5 is integrally formed with a movable seat 23. The movable seat 23 has an internal threaded groove 26. The movable seat 23 slides inside the rectangular plate 24. The threaded rod 25 is threadedly connected to the movable seat 23 through the internal threaded groove 26. Rotating the rotating plate 22 drives the threaded rod 25 to rotate. The threaded rod 25 slides left and right inside the rectangular plate 24 through the threaded connection with the internal threaded groove 26 of the movable seat 23 at the bottom of the drive motor 5.

[0026] refer to Figures 2 to 3The mounting block 21 has a rotating groove 28 inside, and sealing strips 30 are provided on both sides of the inner ring of the rotating groove 28. The three-way pipe 10 has sealing grooves 9 on both sides of the outer ring. The three-way pipe 10 is rotatably installed inside the mounting block 21 through the rotating groove 28 inside the mounting block 21. The sealing strips 30 rotate inside the sealing grooves 9. The first connecting block 3 and the second connecting block 31 are engaged and connected. During the rotation of the three-way pipe 10, the sealing of the connection part is ensured to prevent raw material leakage. By precisely controlling the rotation angle of the three-way pipe 10, the switching of the white film or black film raw material channel can be realized.

[0027] refer to Figures 4 to 5 Protective cover plates 8 are fixedly installed on both sides of the mounting block 21. One of the protective cover plates 8 has a circular groove 12 in the center. The rotating shaft 2 is fixedly installed with a first connecting block 3 through the circular groove 12. The output shaft of the first cylinder 1 is fixedly installed with a first piston 27. The first piston 27 is slidably installed inside the inner ring of the flow cylinder 4. The output shaft of the second cylinder 11 passes through the upper end of the extrusion cylinder 14 and is fixedly installed with a second piston 29. The second piston 29 is slidably installed inside the inner ring of the extrusion cylinder 14, so that the raw material is extruded through the extrusion tube 15 at the bottom of the extrusion cylinder 14. During the extrusion process, the second cylinder 11 provides stable pressure to uniformly extrude the raw material and form a continuous EVA film. By adjusting the pressure of the second cylinder 11 and the raw material extraction amount of the first cylinder 1, the thickness of the film and the extrusion speed can be precisely controlled to meet different production needs.

[0028] Operating principle and advantages: At the initial stage of equipment operation, EVA white film and black film raw materials enter the storage tank 19 through the feed pipe 7 at the upper end of the storage tank 19 for storage. The first connecting pipe 6, fixedly installed inside the storage tank 19, serves as the initial channel for raw material transportation, guiding the raw materials in the storage tank 19 to subsequent processing components. The outer ring of the first connecting pipe 6 is placed inside the support block 18 at the upper end of the support base 17, providing stable support for the connecting pipe and ensuring the stability of the pipeline during raw material transportation, preventing shaking or displacement from affecting the stability of raw material transportation. After the raw materials are transported to the mounting block 21, the internal components of the mounting block 21 rotate... The dynamically installed T-shaped pipe 10 plays a crucial role. The rotating shaft 2 at one end of the T-shaped pipe 10 is engaged with the second connecting block 31 on the output shaft of the drive motor 5 via the first connecting block 3. When switching between white and black film materials, rotating the rotating plate 22 drives the threaded rod 25 to rotate. The threaded rod 25 is threadedly connected to the threaded groove 26 inside the moving seat 23 at the bottom of the drive motor 5, causing the drive motor 5 to slide left and right inside the rectangular plate 24, thereby driving the T-shaped pipe 10 to rotate. The rotating groove 28 inside the mounting block 21 and the sealing strips 30 on both sides of the inner ring of the rotating groove 28, along with the sealing strips 30 on both sides of the outer ring of the T-shaped pipe 10... The sealing groove 9, when in conjunction with the three-way pipe 10, ensures the sealing of the connection point and prevents material leakage. By precisely controlling the rotation angle of the three-way pipe 10, the material channel for white or black film can be switched, introducing the corresponding material into the flow cylinder 4. The first cylinder 1 at the upper end of the flow cylinder 4 drives the first piston 27 to slide within the inner ring of the flow cylinder 4 via the output shaft. The reciprocating motion of the piston quantitatively controls the material entering the flow cylinder 4. Each movement of the first piston 27 extracts a fixed volume of material, ensuring a constant amount of material entering the extrusion cylinder 14 each time, thereby guaranteeing the thickness and quality of the film. To ensure consistency, the quantitatively controlled raw material enters the extrusion cylinder 14 through the second connecting pipe 13. The second cylinder 11 at the upper end of the extrusion cylinder 14 drives the second piston 29 to slide within the inner ring of the extrusion cylinder 14 through the output shaft. The second piston 29 presses the raw material downward, causing it to be extruded through the extrusion pipe 15 at the bottom of the extrusion cylinder 14. During the extrusion process, the second cylinder 11 provides stable pressure to uniformly extrude the raw material and form a continuous EVA film. By adjusting the pressure of the second cylinder 11 and the raw material extraction amount of the first cylinder 1, the thickness of the film and the extrusion speed can be precisely controlled to meet different production needs.

Claims

1. An EVA white film and black film co-extrusion extrusion equipment, comprising a base plate (20), characterized in that: A storage bin (19) is fixedly installed on one side of the upper end of the base plate (20). A first connecting pipe (6) is fixedly installed inside the storage bin (19). An installation block (21) is fixedly installed at the end of the first connecting pipe (6) away from the storage bin (19). A three-way pipe (10) is rotatably installed inside the installation block (21). A rotating shaft (2) is integrally formed at one end of the three-way pipe (10). A first connecting block (3) is fixedly installed at the end of the rotating shaft (2) away from the three-way pipe (10). A fixing seat (16) is fixedly installed on one side of the upper end of the base plate (20). A rectangular plate (24) is integrally formed at the upper end of the fixing seat (16). A threaded rod is rotatably installed inside the rectangular plate (24). 25), a rotating plate (22) is fixedly installed at one end of the threaded rod (25), a drive motor (5) is threadedly connected to the outer ring of the threaded rod (25), a second connecting block (31) is fixedly installed on the output shaft of the drive motor (5), a flow cylinder (4) is fixedly installed on the upper end of the mounting block (21), a first cylinder (1) is fixedly installed on the upper end of the flow cylinder (4), a second connecting pipe (13) is fixedly connected to the bottom of the mounting block (21), an extrusion cylinder (14) is fixedly installed at the end of the second connecting pipe (13) away from the mounting block (21), a second cylinder (11) is fixedly installed on the upper end of the extrusion cylinder (14), and an extrusion tube (15) is integrally formed at the bottom of the extrusion cylinder (14).

2. The EVA white film and black film co-extrusion extrusion equipment according to claim 1, characterized in that: The storage tank (19) has a feed pipe (7) on the side away from the first connecting pipe (6) at the upper end. A support base (17) is fixedly installed at the center of the upper end of the base plate (20). A support block (18) is fixedly installed on the upper end of the support base (17). The outer ring of the first connecting pipe (6) is placed inside the support block (18).

3. The EVA white film and black film co-extrusion extrusion equipment according to claim 1, characterized in that: The drive motor (5) has a movable seat (23) integrally formed at the bottom. The movable seat (23) has an internal thread groove (26) inside. The movable seat (23) slides inside the rectangular plate (24). The threaded rod (25) is threadedly connected to the movable seat (23) through the internal thread groove (26) inside the movable seat (23).

4. The EVA white film and black film co-extrusion extrusion equipment according to claim 1, characterized in that: The mounting block (21) has a rotating groove (28) inside, and sealing strips (30) are provided on both sides of the inner ring of the rotating groove (28). Sealing grooves (9) are provided on both sides of the outer ring of the tee pipe (10).

5. The EVA white film and black film co-extrusion extrusion equipment according to claim 4, characterized in that: The three-way pipe (10) is rotatably installed inside the mounting block (21) through the rotating groove (28) opened inside the mounting block (21), the sealing strip (30) rotates inside the sealing groove (9), and the first connecting block (3) and the second connecting block (31) are engaged and connected.

6. The EVA white film and black film co-extrusion extrusion equipment according to claim 1, characterized in that: Protective cover plates (8) are fixedly installed on both sides of the mounting block (21). A circular groove (12) is opened in the center of one of the protective cover plates (8). The rotating shaft (2) is fixedly installed with a first connecting block (3) through the circular groove (12). The output shaft of the first cylinder (1) is fixedly installed with a first piston (27). The first piston (27) is slidably installed in the inner ring of the flow cylinder (4).

7. The EVA white film and black film co-extrusion extrusion equipment according to claim 1, characterized in that: The output shaft of the second cylinder (11) passes through the upper end of the extrusion cylinder (14) and is fixedly installed with a second piston (29). The second piston (29) is slidably installed inside the inner ring of the extrusion cylinder (14).

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