Thermocompression bonding device for composite film

Abstract

The utility model discloses a thermocompression bonding device for a composite film. The thermocompression bonding device comprises an operation table and an electric cabinet, the device further comprises a pressing assembly and a rolling assembly. The rolling assembly comprises a top pressing plate arranged below the moving plate, a first supporting rod and a second supporting rod are rotationally arranged on the two sides of the top pressing plate, and limiting grooves capable of being in sliding connection with the first supporting rod and the second supporting rod are formed in the positions, located on the two sides of the hot pressing table, of the base. Pressing rollers are rotationally arranged between the opposite side faces of the first supporting rods and between the opposite side faces of the second supporting rods, the pressing rollers are located on the hot-pressing table, and elastic supporting structures are arranged between the pressing rollers and the corresponding first supporting rods and between the pressing rollers and the corresponding second supporting rods. According to the utility model, the compression roller can roll from the middle end to the two ends on the surface of a material for pre-pressing, so that bubbles and upwarp are reduced, and the contact among multiple layers of composite materials can be increased in advance, so that the compression is more uniform when a subsequent driving mechanism drives hot pressing, and the quality of a finished product is improved.

Description

Technical Field

[0001] This utility model relates to the field of hot pressing technology, specifically to a hot pressing device for composite films. Background Technology

[0002] Thin-film hot pressing is a process of bonding two or more layers of thin films together by hot pressing. During the operation, the films are stacked together and placed on a hot pressing table. Temperature and pressure are applied using hot pressing equipment to force the pre-applied adhesive between the films to cure and form a strong bond. After hot pressing, the composite film is allowed to gradually cure during the cooling phase to ensure the strength of the bond. Thin-film hot pressing technology is widely used in the manufacture of various composite film products, such as packaging materials and solar cell backsheets.

[0003] In actual operation, the driving structure used in hot pressing equipment is usually electric drive. The output end of the electric drive device is connected to the hot pressing plate, and the hot pressing plate applies downward pressure to press the film together. However, the output end area of ​​the cylinder is limited, while the area of ​​the hot pressing plate is large, which causes the force on the hot pressing plate to be biased. The pressure near the corners is less than that in the middle, which leads to uneven adhesion during the pressing of composite films. In addition, the hot pressing plate moves from top to bottom in horizontal pressing, which cannot handle the tiny air bubbles that may exist in multilayer composite materials, resulting in uneven pressing. Utility Model Content

[0004] This invention aims to solve the aforementioned technical problems of uneven stress during hot pressing and the inability to handle air bubbles, by providing a hot pressing device for composite films.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a hot pressing device for composite films, including an operating table and an electrical control box; and further including:

[0006] A pressing assembly includes a base on an operating table, with columns at each of the four corners of the base, and a top plate connected to the upper ends of the columns; a driving mechanism is located in the middle of the top plate, and a movable plate is located at the output end of the driving mechanism, with through slots at each of the four corners of the movable plate that can slide and connect with the columns; a hot press table is located on the base.

[0007] A rolling assembly includes a top pressure plate located below a movable plate, with support rod 1 and support rod 2 rotatably mounted on both sides of the top pressure plate. A limiting groove is provided on the base and on both sides of the hot press table, allowing for slidable connection with support rod 1 and support rod 2. Pressure rollers are rotatably mounted between the opposite sides of support rod 1 and between the opposite sides of support rod 2. The pressure rollers are located on the hot press table, and an elastic support structure is provided between the pressure rollers and the corresponding support rod 1 and support rod 2.

[0008] Furthermore, the output end of the drive mechanism is connected to an extension plate, which is connected to the movable plate by multiple bolts.

[0009] Furthermore, a magnetically controlled heating tube is coiled inside the hot press table.

[0010] Furthermore, both the lower outer ends of the first and second support rods are equipped with rollers that can rotate, and the limiting groove can accommodate the rollers, with the longitudinal section of the limiting groove being an inverted T-shape.

[0011] Furthermore, the inner bottom surface of the limiting groove slopes downward from the middle to both ends.

[0012] Furthermore, the elastic support structure includes strip grooves on the opposite sides of support rod one and support rod two, a slide rod in the strip groove, a metal connecting plate slidably connected to the outside of the slide rod, and a circular connector at the end of the slide rod, which is rotatably connected to the end of the pressure roller; springs are provided at the upper and lower ends of the metal connecting plate and on the outside of the slide rod.

[0013] The advantages of this utility model compared with the prior art are as follows:

[0014] During the hot pressing process, as the top pressure plate descends, the support rods one and two on both sides of the top pressure plate move in opposite directions and open under the drive of the lower rollers. This allows the pressure rollers to roll and pre-press the material surface from the middle to both ends, which not only reduces air bubbles and warping, but also increases the contact between the multi-layer composite materials in advance. This makes the pressure more uniform when the subsequent drive mechanism drives the hot pressing, thus improving the quality of the finished product. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the rolling assembly of this utility model.

[0017] Figure 3 This is a schematic diagram of the elastic support structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the longitudinal section structure of the limiting groove of this utility model.

[0019] As shown in the figure: 1. Operating table, 2. Electrical control box, 3. Base, 4. Column, 5. Top plate, 6. Drive mechanism, 7. Moving plate, 8. Through groove, 9. Hot press table, 10. Top pressure plate, 11. Support rod one, 12. Support rod two, 13. Limiting groove, 14. Roller, 15. Pressure roller, 16. Strip groove, 17. Slide rod, 18. Metal connecting plate, 19. Spring. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] Example 1, in conjunction with Appendix Figure 1 A hot pressing device for composite films includes an operating table 1 and an electrical control box 2; used for pre-setting temperature, pressure of the driving mechanism, etc.

[0022] Combined with appendix Figure 1 , 2 The pressing assembly includes a base 3 on the operating table 1, with columns 4 at each of the four corners of the base 3, and a top plate 5 connected to the upper end of each column 4; a drive mechanism 6 is located in the middle of the top plate 5, and a movable plate 7 is located at the output end of the drive mechanism 6. An extension plate is connected to the output end of the drive mechanism 6, and the extension plate and the movable plate 7 are connected by multiple bolts. The extension plate can increase the contact area between the drive mechanism 6 and the movable plate 7, so that the pressure is distributed and avoids being concentrated at the output end of the drive mechanism 6.

[0023] The four corners of the movable plate 7 are provided with through grooves 8 that can slide and connect with the column 4. The through grooves 8 and the column 4 are fitted with a clearance to reduce resistance and make the movable plate 7 move smoothly. The base 3 is provided with a hot press table 9. The hot press table 9 is equipped with a magnetic heating tube coiled inside for heating operation, providing a good temperature base to facilitate the action of the adhesive.

[0024] Combined with appendix Figure 2-4 The rolling assembly includes a top pressure plate 10 located below the movable plate 7. Support rods 11 and 12 are rotatably mounted on both sides of the top pressure plate 10. Limiting grooves 13 are located on the base 3 and on both sides of the hot press table 9, allowing slidable connection with the support rods 11 and 12. These grooves limit the movement of the support rods 11 and 12, ensuring their lower ends remain within the limiting grooves 13 during rotation. Rollers 14 are rotatably mounted on the outer sides of the lower ends of the support rods 11 and 12. The limiting grooves 13 accommodate the rollers 14, and their longitudinal section is an inverted T-shape, effectively confining the rollers 14 within the grooves, preventing them from easily detaching and ensuring normal rotation. The rollers 14 reduce the contact area and resistance between the lower ends of the support rods 11 and 12 and the limiting grooves 13, assisting in the rotation of the support rods 11 and 12.

[0025] Combined with appendix Figure 4 The inner bottom surface of the limiting groove 13 slopes downward from the middle to both ends, so that when not pressed, both rollers 14 are located at the highest point of the inner bottom surface of the limiting groove 13. Once operation begins, they will only rotate downward, avoiding the phenomenon that the top pressure plate 10 cannot descend due to the rollers 14 rotating in opposite directions.

[0026] Combined with appendix Figure 2 , 3Pressure rollers 15 are rotatably installed between the opposite sides of support rod 11 and between the opposite sides of support rod 2 12. The pressure rollers 15 are located at the middle position on the hot press table 9. During operation, they will rotate in opposite directions to flatten and pre-press the material from the middle to both ends, reducing air bubbles and warping, and providing a foundation for subsequent hot pressing.

[0027] The pressure roller 15 is provided with an elastic support structure between itself and the corresponding support rod 11 and support rod 12. The elastic support structure includes a strip groove 16 on the opposite side of the support rod 11 and support rod 12. A slide rod 17 is provided in the strip groove 16. A metal connecting plate 18 is slidably connected to the outside of the slide rod 17. A circular connector is provided at the end of the metal connecting plate 18. The circular connector is rotatably connected to the end of the shaft of the pressure roller 15. The rotatable connection can be achieved through a bearing. Springs 19 are provided at the upper and lower ends of the metal connecting plate 18 and on the outside of the slide rod 17.

[0028] In the above structure, the metal connecting plate 18 is rotatably connected to the shaft of the pressure roller 15 through a circular connector. Therefore, the pressure roller 15, the metal connecting plate 18, the first support rod 11, and the second support rod 12 can all rotate relatively independently without affecting or restraining each other. In addition, the arrangement of the slide rod 17, the metal connecting plate 18, and the spring 19 allows the pressure roller 15 and the first support rod 11 and the second support rod 12 to move relatively independently in the height direction, avoiding the pressure roller 15 from being restricted when the first support rod 11 and the second support rod 12 move away from each other.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A hot pressing device for composite film, comprising an operating table (1), an electric control box (2); characterized in that: Also include: Pressing assembly; including the base (3) provided with operation platform (1), the upper surface of base (3) is provided with stand (4) in four corners, the upper end of stand (4) is connected with top plate (5) together; The middle end of the top plate (5) is provided with a drive mechanism (6), and the output end of the drive mechanism (6) is provided with a moving plate (7), and the four corners of the moving plate (7) are provided with a through slot (8) which can be slidably connected with the stand (4); The base (3) is provided with a hot pressing table (9); Rolling assembly; including the top pressing plate (10) provided with moving plate (7), the both sides of the top pressing plate (10) are rotatably provided with support rod one (11) and support rod two (12), and the base (3) and located on both sides of the hot pressing table (9) are provided with limiting groove (13) which can be slidably connected with support rod one (11) and support rod two (12); The opposite sides of the support rod one (11) and the opposite sides of the support rod two (12) are rotatably provided with pressure roller (15), and the pressure roller (15) is located on the hot pressing table (9), and the pressure roller (15) and the corresponding support rod one (11) and support rod two (12) are provided with elastic support structure.

2. The hot lamination apparatus for a composite film according to claim 1, characterized by: The output end of the drive mechanism (6) is connected with the extension plate, and the extension plate and the moving plate (7) are connected by a plurality of bolts.

3. The hot lamination apparatus for a composite film according to claim 1, characterized by: The hot pressing table (9) is internally coiled with a magnetic control heating tube.

4. The hot lamination apparatus for a composite film according to claim 1, characterized by: The lower end of the support rod one (11) and the support rod two (12) is rotatably provided with a roller (14) outside, the limiting groove (13) can accommodate the roller (14), and the longitudinal section of the limiting groove (13) is inverted T-shaped.

5. The hot lamination apparatus for a composite film according to claim 1, characterized by: The inner bottom surface of the limiting groove (13) is inclined downward from the middle to the both ends.

6. The hot lamination apparatus for a composite film according to claim 1, characterized by: The elastic support structure includes the strip-shaped groove (16) provided on the opposite sides of the support rod one (11) and the support rod two (12), the strip-shaped groove (16) is provided with a sliding rod (17), the outer side of the sliding rod (17) is slidably connected with a metal connecting plate (18), the end of the metal connecting plate (18) is provided with a circular connecting piece, the circular connecting piece is rotatably connected with the end of the shaft of the pressure roller (15); The metal connecting plate (18) is provided with a spring (19) on the upper end and the lower end and outside the sliding rod (17).

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