Bonding device for metallized film of capacitor
By using a dust collection tube and adjusting roller to remove impurities and air bubbles in a capacitor metal film bonding device, combined with hot pressing technology, the problem of air bubbles and impurities being introduced during film bonding is solved, thus improving the bonding quality and stability of the film.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-03-31
AI Technical Summary
Existing capacitor metal film bonding processes are prone to introducing air bubbles or impurities, leading to localized electric field concentration and increasing the risk of film breakdown.
Impurities on the film surface are removed by a dust collection pipe, and air bubbles are removed by squeezing with an adjusting roller. Combined with a heating plate, the film is hot-pressed to ensure a clean and tight bond.
It effectively avoids the introduction of air bubbles or impurities into the film during the bonding process, reduces the risk of film puncture, and improves bonding quality and stability.
Smart Images
Figure CN224067560U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of capacitor technology, specifically to an adhesive device for bonding metallized capacitor films. Background Technology
[0002] A capacitor is a component that stores electrical charge and energy. A capacitor is a system of conductors where one conductor is surrounded by another, or where all the electric field lines emanating from one conductor terminate in another. Among the types of capacitors is the metal film capacitor. The films in metal film capacitors are typically bonded using a hot-pressing method. This involves heating the dielectric film and the metal film to soften the surface of the dielectric film, then applying pressure with rollers to bond them together. After cooling, a strong and stable multilayer film is formed.
[0003] However, the existing heat-pressing method has certain drawbacks. The bonding process may introduce air bubbles or impurities, leading to localized electric field concentration and increasing the risk of film breakdown. Therefore, those skilled in the art have provided a bonding device for capacitor metallized films to address the problems mentioned in the background section. Utility Model Content
[0004] The purpose of this invention is to provide an adhesive device for metallized capacitor films to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An adhesive device for bonding a capacitor metallized film includes side plates and a base plate. The side plates are mounted on the front and rear sides of the base plate. A detachable metal film roll and a dielectric film roll are rotatably disposed between the side plates. A first guide roller is rotatably disposed on the right side of the metal film roll and the dielectric film roll. A dust collection pipe is fixedly installed between the metal film roll, the dielectric film roll, and the first guide roller. A laterally movable adjusting roller is disposed on the right side of the first guide roller. A second guide roller is rotatably disposed on the upper side of the first guide roller. A heat-pressing structure is installed on the right side of the second guide roller. A detachable take-up roll is also rotatably disposed between the side plates.
[0007] As a further improvement of this utility model: air holes are provided on both the upper and lower surfaces of the dust collection pipe, and an air suction pump is connected to the rear end of the dust collection pipe.
[0008] As a further embodiment of this utility model: a fixing rod is fixedly connected between the side plates, the fixing rod is located on the right side of the adjusting roller, a first hydraulic cylinder is fixedly connected to the right surface of the fixing rod, the driving end of the first hydraulic cylinder extends to the left side of the fixing rod and is fixedly connected to the adjusting roller frame, and the front and rear ends of the adjusting roller are rotatably disposed inside the front and rear arms of the adjusting roller frame.
[0009] As a further embodiment of this utility model: the hot pressing structure includes a heating plate, which has two heating plates, one above the other, located on the upper and lower sides of the horizontal plane where the top of the second guide roller is located. A lower pressing roller and an upper pressing roller are rotatably arranged on the right side of the heating plate. The upper pressing roller is located above the lower pressing roller. Both ends of the upper pressing roller are rotatably arranged inside the pressing roller frame. A support frame is fixedly connected to the upper surface of the side plate. A second hydraulic cylinder is fixedly installed on the upper surface of the support frame. The driving end of the second hydraulic cylinder faces vertically downward and is fixedly connected to the upper surface of the pressing roller frame.
[0010] As a further embodiment of this utility model: the number of the lower pressing rollers and the upper pressing rollers are not unique, and the number of the upper pressing rollers is one less than the number of the lower pressing rollers, and an upper pressing roller is provided between each two adjacent lower pressing rollers.
[0011] As a further embodiment of this utility model: a recovery roller is rotatably arranged between the side plates, and the recovery roller is located between the rightmost lower pressing roller and the winding drum.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] By installing a dust collection pipe between the films, air can be drawn from the pores on the surface of the dust collection pipe after the air pump is turned on, thereby removing fine impurities on the bonding surfaces of the metal film and the dielectric film, effectively ensuring the cleanliness of the bonding surface. In addition, an adjustable adjusting roller is also provided. When a film passes between the first guide roller and the adjusting roller, the first guide roller and the adjusting roller can be used to squeeze the film, thereby squeezing out any air bubbles that may exist between the films, facilitating subsequent heat pressing and bonding, ensuring the quality of the film, effectively avoiding the introduction of air bubbles or impurities during the bonding process, avoiding the manifestation of local electric field concentration in a certain area of the film, and reducing the risk of the film being punctured during use. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of an adhesive device for a capacitor metallized film;
[0015] Figure 2 This is a schematic diagram of the internal structure of an adhesive device for bonding metallized capacitor films.
[0016] Figure 3 This is a schematic diagram of the film bonding state in a bonding device for a capacitor metallized film.
[0017] In the diagram: 1. Side plate; 2. Base plate; 3. Metal film roll; 4. Dielectric film roll; 5. First guide roller; 6. Adjusting roller; 7. Adjusting roller frame; 8. Fixing rod; 9. First hydraulic cylinder; 10. Second guide roller; 11. Heating plate; 12. Lower pressing roller; 13. Upper pressing roller; 14. Pressing roller frame; 15. Support frame; 16. Second hydraulic cylinder; 17. Recycling roller; 18. Take-up roll; 19. Dust collection pipe. Detailed Implementation
[0018] Please see Figures 1-3 In this embodiment of the present invention, an adhesive device for bonding a capacitor metallized film includes a side plate 1 and a base plate 2. The side plate 1 is installed on the front and rear sides of the base plate 2. A detachable metal film roll 3 and a dielectric film roll 4 are rotatably arranged between the side plates 1. A first guide roller 5 is rotatably arranged on the right side of the metal film roll 3 and the dielectric film roll 4. A dust collection pipe 19 is fixedly installed between the metal film roll 3, the dielectric film roll 4 and the first guide roller 5. An adjusting roller 6 that can move laterally is arranged on the right side of the first guide roller 5. A second guide roller 10 is rotatably arranged on the upper side of the first guide roller 5. A heat-pressing structure is installed on the right side of the second guide roller 10. A detachable take-up roll 18 is also rotatably arranged between the side plates 1.
[0019] Preferably, air holes are provided on both the upper and lower surfaces of the dust collection pipe 19, and an air suction pump is connected to the rear end of the dust collection pipe 19.
[0020] Preferably, a fixing rod 8 is fixed between the side plates 1. The fixing rod 8 is located on the right side of the adjusting roller 6. A first hydraulic cylinder 9 is fixed to the right surface of the fixing rod 8. The driving end of the first hydraulic cylinder 9 extends to the left side of the fixing rod 8 and is fixed to the adjusting roller frame 7. The front and rear ends of the adjusting roller 6 are rotatably disposed inside the front and rear arms of the adjusting roller frame 7.
[0021] Preferably, the hot pressing structure includes a heating plate 11, which has two heating plates, one above the other, located on the upper and lower sides of the horizontal plane where the top of the second guide roller 10 is located. A lower pressing roller 12 and an upper pressing roller 13 are rotatably arranged on the right side of the heating plate 11. The upper pressing roller 13 is located above the lower pressing roller 12. Both ends of the upper pressing roller 13 are rotatably arranged inside the pressing roller frame 14. A support frame 15 is fixedly connected to the upper surface of the side plate 1. A second hydraulic cylinder 16 is fixedly installed on the upper surface of the support frame 15. The driving end of the second hydraulic cylinder 16 is vertically downward and fixedly connected to the upper surface of the pressing roller frame 14.
[0022] Preferably, the number of lower pressing rollers 12 and upper pressing rollers 13 is not unique, and the number of upper pressing rollers 13 is one less than the number of lower pressing rollers 12. An upper pressing roller 13 is provided between each two adjacent lower pressing rollers 12.
[0023] Preferably, a recovery roller 17 is rotatably disposed between the side plates 1, and the recovery roller 17 is located between the rightmost lower pressing roller 12 and the winding drum 18.
[0024] The working principle of this invention is as follows: When bonding the metallized film of a capacitor, the metal film roll and the dielectric film are first rolled and mounted on the surfaces of the metal film roll 3 and the dielectric film roll 4, respectively. Then, the film is pulled around between the first guide roller 5 and the adjusting roller 6, then around the upper side of the second guide roller 10, passing between the heating plates 11, and passing between the lower pressing roller 12 and the upper pressing roller 13. While the film is being pulled, the suction pump is simultaneously activated. The dust collection pipe 19 is located between the metal film roll 3, the dielectric film roll 4, and the first guide roller 5, and can remove fine impurities present on the surfaces where the metal film and the dielectric film are bonded. The material is drawn away to ensure the bonding surface is clean. At the same time, the first hydraulic cylinder 9 is activated to push the adjusting roller 6 toward the first guide roller 5, so that the film adheres better and the air bubbles between the films are squeezed out. Then, the heating plate 11 is activated to heat the film and soften the medium film. When the film passes between the lower pressing roller 12 and the upper pressing roller 13, the upper pressing roller 13 is moved down by activating the second hydraulic cylinder 16. The film is squeezed by multiple lower pressing rollers 12 and upper pressing rollers 13, thereby completing the bonding between the two. After cooling, a firm and stable multilayer film is formed, and then it passes through the take-up roller 17 and is wound onto the surface of the take-up drum 18.
[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A capacitor metalized film bonding device comprising side plates (1) and a bottom plate (2), the side plates (1) are installed on the front and back sides of the bottom plate (2), characterized in that: The detachable metal film reel (3) and medium film reel (4) are rotatably arranged between the side plates (1), a first guide roller (5) is rotatably arranged at the right side of the metal film reel (3) and the medium film reel (4), the metal film reel (3), the medium film reel (4) and the first guide roller (5) are fixedly installed with a dust collecting pipe (19), the first guide roller (5) is provided with a transversely movable adjusting roller (6) at the right side thereof, a second guide roller (10) is rotatably arranged at the upper side of the first guide roller (5), a hot pressing structure is installed at the right side of the second guide roller (10), and a detachable winding reel (18) is further rotatably arranged between the side plates (1).
2. An apparatus for bonding a capacitor metallized film according to claim 1, wherein: Air holes are formed in the upper and lower surfaces of the dust collecting pipe (19), and an air suction pump is connected to the rear end of the dust collecting pipe (19).
3. The bonding device for a capacitor metallized film according to claim 1, characterized in that: The fixed rod (8) is fixedly connected between the side plates (1), the fixed rod (8) is located at the right side of the adjusting roller (6), the first hydraulic cylinder (9) is fixedly connected to the right surface of the fixed rod (8), the adjusting roller frame (7) is fixedly connected to the left side of the fixed rod (8) extending from the driving end of the first hydraulic cylinder (9), and the front and rear ends of the adjusting roller (6) are rotatably arranged in the front and rear arms of the adjusting roller frame (7).
4. The apparatus of claim 1, wherein: The hot pressing structure comprises two heating plates (11), which are arranged above and below the horizontal plane where the top end of the second guide roller (10) is located, a lower pressing roller (12) and an upper pressing roller (13) are rotatably arranged at the right side of the heating plate (11), the upper pressing roller (13) is located above the lower pressing roller (12), the ends of the upper pressing roller (13) are rotatably arranged in the pressing roller frame (14), the support frame (15) is fixedly connected to the upper surface of the side plate (1), the second hydraulic cylinder (16) is fixedly installed on the upper surface of the support frame (15), and the driving end of the second hydraulic cylinder (16) is vertically downward and fixedly connected to the upper surface of the pressing roller frame (14).
5. An apparatus for bonding a capacitor metallized film as defined in claim 4 wherein: The number of the lower pressing rollers (12) and the upper pressing rollers (13) is not unique, the number of the upper pressing rollers (13) is one less than the number of the lower pressing rollers (12), and one upper pressing roller (13) is arranged between every two adjacent lower pressing rollers (12).
6. An apparatus for bonding a capacitor metallized film according to claim 5, wherein: The recycling roller (17) is rotatably arranged between the rightmost lower pressing roller (12) and the winding reel (18).