Metallized film unwinding and flattening device

Abstract

The invention relates to the technical field of metallized films, and discloses a metallized film unwinding and flattening device which comprises a machine body, a mounting seat is arranged on the inner wall of the machine body, a flattening roller is mounted on the mounting seat, a wrinkle removing mechanism is arranged on the machine body, and the wrinkle removing mechanism comprises a guide roller and a wrinkle removing wheel. The guide rollers are rotationally connected to the inner wall of the machine body. The guide roller and the wrinkle removing wheel are arranged to cooperatively remove wrinkles on the metallized film, the guide grooves symmetrically formed in the guide roller can actively unfold the metallized film towards the two sides, and bending stress left after winding is preliminarily released; the wrinkle removing wheel at the bottom of the scraping plate is matched to remove wrinkles on the upper surface of the film in a rolling mode, the elastic connection design of the torsional spring enables the wrinkle removing wheel and the film to keep adaptive pressure all the time, coating damage caused by overpressure or incomplete wrinkle removing caused by underpressure is avoided, and the problems of arc-shaped bending and local tiny wrinkles of the film after unwinding are effectively solved; and the machining deviation caused by insufficient flatness is reduced.

Description

Technical Field

[0001] This invention relates to the field of metallized thin film technology, specifically to a metallized thin film unwinding and flattening device. Background Technology

[0002] Metallized films, as a key basic material in electronics, packaging, and new energy fields, have a core structure formed on a polymer substrate through processes such as vacuum deposition, creating a metal coating ranging from nanometer to micrometer scale. They combine the flexibility of the substrate with the conductivity and light-shielding properties of metal, making them widely used in capacitor manufacturing, flexible electronic devices, and high-performance packaging. In industrial production, metallized films are typically stored and transported in rolls wound onto take-up rollers. During the winding process, to ensure the integrity of the coating and the stability of the winding, a certain tension must be applied to ensure the film adheres tightly to the take-up roller. This process inevitably causes the film to form a curved shape consistent with the curvature of the take-up roller.

[0003] Before the metallized film enters the subsequent processing stage, it needs to be unwound through an unwinding process. However, due to factors such as winding tension, storage time, and changes in ambient temperature and humidity, the unwound metallized film will exhibit a continuous arc-shaped bend along the winding direction. In some areas, even micro-wrinkles may occur due to the release of interlayer stress. This bending state and surface defects have multiple adverse effects on subsequent processing. Therefore, a metallized film unwinding and flattening device is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a metallized film unwinding and flattening device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a metallized film unwinding and flattening device, comprising a machine body, an mounting seat provided on the inner wall of the machine body, a flattening roller mounted on the mounting seat, and a wrinkle removal mechanism provided on the machine body, the wrinkle removal mechanism comprising a guide roller and a wrinkle removal wheel, the guide roller being rotatably connected to the inner wall of the machine body, and the wrinkle removal wheel being positioned directly above the guide roller.

[0006] Preferably, the guide roller has guide grooves, and there are two sets of guide grooves, which are symmetrically arranged on the guide roller.

[0007] Preferably, the top of the machine body is provided with a mounting plate, the top of the mounting plate is provided with a first electric push rod, the top of the first electric push rod is provided with an angle sensor, and the rotating shaft of the angle sensor is connected to a connecting plate. The bottom of the connecting plate is connected to a fixing rod through a connecting rod. The outer wall of the fixing rod is rotatably fitted with a scraper, and the wrinkle removal wheel is rotatably connected to the bottom of the scraper.

[0008] Preferably, the scraper is provided with a torsion spring, and the two ends of the torsion spring are fixedly connected to the fixing rod and the scraper, respectively.

[0009] Preferably, the mounting plate is provided with a swing mechanism, which includes a slide groove and a second electric push rod. The slide groove is formed on the connecting plate, the second electric push rod is mounted on the mounting plate, the output end of the second electric push rod is fixedly connected to a moving block, the top of the moving block is fixedly connected to a moving rod, and the moving rod passes through the slide groove and is slidably connected to the inner wall of the slide groove.

[0010] Preferably, a limiting block is fixedly connected to the top of the movable rod, an arc-shaped groove is provided on the top of the mounting plate, and the connecting rod passes through the arc-shaped groove and is slidably connected to the inner wall of the arc-shaped groove.

[0011] Preferably, the mounting plate is provided with a collection mechanism, which includes an absorption port and a suction fan. The absorption port is located at the bottom of the scraper, and the suction fan is installed at the bottom of the mounting plate. The input end of the suction fan is connected to a main pipe, and the bottom of the main pipe is connected to the scraper through a connecting pipe. The output end of the suction fan is connected to a waste discharge pipe.

[0012] Preferably, the scraper is provided with a scraper blade, which is located on one side of the absorption port and contacts the top of the wrinkle-removing wheel.

[0013] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This metallized film unwinding and flattening device uses guide rollers and wrinkle-removing rollers to work together to remove wrinkles from the metallized film. The guide grooves symmetrically arranged on the guide rollers can actively unfold the metallized film to both sides, initially releasing the bending stress remaining after winding. The wrinkle-removing rollers at the bottom of the scraper roll and remove wrinkles from the upper surface of the film. The elastic connection design of the torsion spring ensures that the wrinkle-removing rollers and the film always maintain appropriate pressure, avoiding damage to the coating due to overpressure or incomplete wrinkle removal due to underpressure. This effectively solves the problem of arc bending and local micro-wrinkles of the film after unwinding, and reduces processing deviations caused by insufficient flatness.

[0014] 2. This metallized film unwinding and flattening device, through the setting of a swing mechanism and an angle sensor, when the metallized film deviates laterally during the conveying process, the second electric push rod can drive the moving rod to slide along the slide groove, causing the connecting plate and scraper to swing along the arc groove, thereby tilting the wrinkle removal wheel to achieve dynamic correction; the angle sensor can monitor the rotation angle of the connecting plate in real time, accurately control the tilting amplitude of the wrinkle removal wheel, avoid film tension concentration, tearing or coating scratches caused by deviation, reduce the frequency of downtime adjustment, and improve the stability of continuous production.

[0015] 3. This metallized film unwinding and flattening device, by setting up a collection mechanism, allows the scraper at the bottom of the scraper to scrape off metal debris, dust and other impurities adsorbed on the surface of the wrinkling roller in real time, avoiding secondary contamination of the film by the impurities along with the wrinkling roller; the suction fan generates negative pressure through the main pipe, connecting pipe and the absorption port at the bottom of the scraper to timely suck in the scraped impurities and discharge them through the discharge pipe, preventing the impurities from being squeezed into the interlayer of the film during the subsequent flattening process to form permanent indentations, while also avoiding the impurities from scratching the metal coating, ensuring that the performance of the metallized film is not affected.

[0016] 4. This metallized film unwinding and flattening device improves its adaptability through multiple adjustable structures. The first electric push rod can drive the connecting plate to rise and fall, flexibly adjusting the initial contact height between the wrinkle-removing roller and the film to adapt to metallized films of different thicknesses. The elastic buffering effect of the torsion spring can adapt to the slight undulations on the film surface, ensuring uniform pressure in different areas. The third electric push rod drives the upper flattening roller to rise and fall, which can adjust the flattening pressure according to the film thickness. It can meet the flattening requirements of metallized films with different substrates without replacing the core components, reducing equipment replacement and debugging costs.

[0017] 5. This metallized film unwinding and flattening device allows the metallized film to directly enter the upper and lower sets of flattening rollers for final flattening after wrinkle removal by guide rollers, fine finishing by wrinkle removal rollers, and impurity removal cleaning. No additional pre-treatment equipment is required, shortening the processing chain. Furthermore, the lower flattening roller, guide roller, and conveyor roller are driven by synchronous belt pulleys to ensure that the film conveying speed is synchronized with the flattening and wrinkle removal actions, avoiding film stretching and deformation caused by speed differences. This provides flat, clean, and stable raw materials for subsequent processes such as slitting, cutting, and core winding, improving overall production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the wrinkle removal mechanism of the present invention; Figure 4 This is a schematic diagram of the bottom of the wrinkle removal mechanism of the present invention; Figure 5 This is an enlarged schematic diagram of point A in the present invention; Figure 6 This is a schematic diagram of the scraper of the present invention; Figure 7 This is a schematic diagram of the inside of the scraper of the present invention.

[0019] In the diagram: 1. Machine body; 2. Mounting base; 3. Flattening roller; 4. Wrinkle removal mechanism; 41. Guide roller; 42. Guide groove; 43. Mounting plate; 44. First electric push rod; 45. Angle sensor; 46. Connecting plate; 47. Connecting rod; 48. Fixing rod; 49. Scraper; 410. Torsion spring; 411. Wrinkle removal wheel; 5. Swinging mechanism; 51. Slide groove; 52. Second electric push rod; 53. Moving block; 54. Moving rod; 55. Arc groove; 6. Collection mechanism; 61. Absorption port; 62. Scraper; 63. Fan; 64. Main pipe; 65. Connecting pipe; 66. Waste discharge pipe; 7. Conveying roller. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-7 One embodiment of the present invention is: a metallized film unwinding and flattening device, comprising a body 1, an mounting base 2 provided on the inner wall of the body 1, a flattening roller 3 mounted on the mounting base 2, and three flattening rollers 3 mounted on the mounting base 2. The mounting base 2 is provided in two sets, with the two sets of mounting base 2 arranged vertically. A top plate is fixedly connected to the top of the body 1, and a third electric push rod is connected to the bottom of the top plate. Lifting grooves are provided on both sides of the body 1, and lifting blocks are slidably connected to the inner walls of the lifting grooves. The lifting blocks are fixedly connected to the mounting base 2 located above. The bottom of the output end of the third electric push rod is fixedly connected to the top of the lifting block. By setting the third electric push rod and the lifting block, the mounting base 2 located above can be driven to lift and lower, so that the flattening roller 3 above can stably contact the upper surface of the metallized film, thereby improving the flattening stability. A conveyor roller 7 is rotatably connected inside the body 1. One end of the conveyor roller 7 is connected to an external driving component. The external driving component drives the conveyor roller 7 to rotate, thereby driving the metallized film on the conveyor roller 7 to be conveyed.

[0022] A wrinkle removal mechanism 4 is provided on the machine body 1. The wrinkle removal mechanism 4 includes a guide roller 41 and a wrinkle removal wheel 411. The guide roller 41 is rotatably connected to the inner wall of the machine body 1. The flattening roller 3 and the guide roller 41 located below are connected to the transmission roller 7 via a synchronous belt pulley, so that the flattening roller 3 and the guide roller 41 located below can rotate synchronously with the transmission roller 7. The height of the guide roller 41 is higher than the height of the flattening roller 3 and the transmission roller 7 located below. By setting the height of the guide roller 41 to be higher than the height of the flattening roller 3 and the transmission roller 7 located below, the contact area between the guide roller 41 and the metallized film is increased, thereby making the wrinkle removal of the metallized film more comprehensive. The wrinkle removal wheel 411 is located directly above the guide roller 41. The guide roller 41 has guide grooves 42. Two sets of guide grooves 42 are provided, and the two sets of guide grooves 42 are symmetrically arranged on the guide roller 41. The guide groove 42 is provided on the guide roller 41 so that when the metallized film is conveyed on the guide roller 41, the metallized film is spread to both sides through the guide groove 42, thereby removing wrinkles from the metallized film. The top of the machine body 1 is provided with a mounting plate 43, and a first electric push rod 44 is installed on the top of the mounting plate 43. The first electric push rod 44 is located at the top center of the mounting plate 43. An angle sensor 45 is installed on the top of the first electric push rod 44, and the rotating shaft of the angle sensor 45 is connected to a connecting plate 46. A connecting rod 47 is fixedly connected to the bottom of the connecting plate 46, and a fixing rod 48 is fixedly connected to the connecting rod 47. Several scrapers 49 are rotatably sleeved on the outer wall of the fixing rod 48. The wrinkle removal wheel 411 is rotatably connected to the bottom of the scraper 49. A torsion spring 410 is provided on the scraper 49, and the two ends of the torsion spring 410 are fixedly connected to the fixing rod 48 and the scraper 49 respectively.

[0023] Please see Figure 1-7 Based on the above embodiments, in another embodiment of the present invention, a swing mechanism 5 is provided on the mounting plate 43. The swing mechanism 5 includes a slide groove 51 and a second electric push rod 52. The slide groove 51 is formed on the connecting plate 46, and the second electric push rod 52 is mounted on the mounting plate 43. A moving block 53 is fixedly connected to the output end of the second electric push rod 52, and a moving rod 54 is fixedly connected to the top of the moving block 53. The moving rod 54 passes through the slide groove 51 and is slidably connected to the inner wall of the slide groove 51. A limit block is fixedly connected to the top of the moving rod 54. The limit block is provided to prevent... The separation of the moving rod 54 from the connecting plate 46 affects the swinging effect. The top of the mounting plate 43 is provided with an arc-shaped groove 55. There are two arc-shaped grooves 55, which are symmetrically arranged on both sides of the first electric push rod 44. The distance between the two arc-shaped grooves 55 is the same as the length of the connecting plate 46. The connecting rod 47 passes through the arc-shaped groove 55 and slides to connect with the inner wall of the arc-shaped groove 55. By making the distance between the arc-shaped grooves 55 the same as the length of the connecting plate 46, it is possible for the second electric push rod 52 to drive the moving block 53 to move, thereby causing the connecting plate 46 to swing along the arc of the arc-shaped groove 55.

[0024] Please see Figure 1-7 Based on the above embodiments, in another embodiment of the present invention, a collection mechanism 6 is provided on the mounting plate 43. The collection mechanism 6 includes an absorption port 61 and a suction fan 63. The absorption port 61 is located at the bottom of the scraper 49, and the suction fan 63 is installed at the bottom of the mounting plate 43. The input end of the suction fan 63 is connected to a main pipe 64, and the bottom of the main pipe 64 is connected to the scraper 49 through a connecting pipe 65. The output end of the suction fan 63 is connected to a waste discharge pipe 66, which is connected to an external collection box for collecting metal debris on the metallized film absorbed by the suction fan 63, so as to avoid the metal debris affecting the subsequent flattening of the metallized film by the flattening roller 3. A scraper blade 62 is provided on the scraper 49. The scraper blade 62 is located on one side of the absorption port 61 and contacts the top of the wrinkle removal roller 411. The scraper blade 62 cleans the wrinkle removal roller 411 to avoid impurities affecting the wrinkle removal effect of the subsequent wrinkle removal roller 411.

[0025] Working principle: The metallized film is passed sequentially through the conveyor roller 7, guide roller 41 and flattening roller 3. The first electric push rod 44 is activated to drive the connecting plate 46 to descend. The descent of the connecting plate 46 drives the fixing plate 48 to descend through the connecting rod 47, thereby driving the scraper 49 to descend, so that the wrinkle removal roller 411 contacts the upper surface of the metallized film. At the same time, the third electric push rod is activated, which drives the lifting block to descend, thereby driving the mounting base 2 located above to descend, so that the flattening roller 3 located above contacts the top of the metallized film.

[0026] The metallized film is conveyed by the conveyor roller 7. When the metallized film reaches the guide roller 41, it is spread out to both sides by the guide groove 42 on the guide roller 41, thereby achieving the wrinkle removal effect. At the same time, the wrinkle removal roller 411 located above rolls on the upper surface of the metallized film, thereby removing wrinkles from the upper surface of the metallized film. The torsion spring 410 ensures that the wrinkle removal roller 411 and the metallized film are in elastic contact, avoiding excessive or insufficient pressure from affecting the wrinkle removal effect of the wrinkle removal roller 411 on the metallized film. When the wrinkle removal roller 411 removes wrinkles from the upper surface of the metallized film, it will adsorb impurities on the metallized film. The scraper 62 scrapes off the impurities adsorbed on the wrinkle removal roller 411. Then, the suction fan 63 is started. The suction fan 63 generates suction at the absorption port 61 through the main pipe 64 and the connecting pipe 65, thereby absorbing the impurities and discharging them into the collection box through the discharge pipe 66 for collection, so as to prevent impurities from affecting the subsequent flattening effect.

[0027] When the metallized film deviates during the conveying process, the second electric push rod 52 is activated to move the moving block 53. The movement of the moving block 53 causes the connecting plate 46 to swing through the moving rod 54. The swing of the connecting plate 46 causes the scraper 49 to swing through the connecting rod 47 and the fixed rod 48, thereby causing the wrinkle removal wheel 411 to tilt to one side, thus correcting the deviation of the metallized film and preventing wrinkles caused by the deviation of the metallized film, which would affect the subsequent flattening effect. The angle sensor 45 senses the rotation angle of the connecting plate 46 to determine the tilt angle of the wrinkle removal wheel 411, making the correction of the wrinkle removal wheel 411 more stable.

[0028] After the metallized film is wrinkled, it is conveyed to the flattening roller 3. The upper and lower sets of flattening rollers 3 flatten the metallized film, which facilitates the subsequent processing of the metallized film.

[0029] This invention provides a metallized thin film unwinding and flattening device. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A metallized film unwinding and flattening device, comprising a body (1), characterized in that: The inner wall of the machine body (1) is provided with a mounting base (2), and a flattening roller (3) is mounted on the mounting base (2). The machine body (1) is provided with a wrinkle removal mechanism (4), which includes a guide roller (41) and a wrinkle removal wheel (411). The guide roller (41) is rotatably connected to the inner wall of the machine body (1), and the wrinkle removal wheel (411) is located directly above the guide roller (41).

2. The metallized film unwinding and flattening device according to claim 1, characterized in that: The guide roller (41) is provided with guide grooves (42), and there are two sets of guide grooves (42) symmetrically arranged on the guide roller (41).

3. The metallized film unwinding and flattening device according to claim 2, characterized in that: The top of the body (1) is provided with an installation plate (43), the top of the installation plate (43) is provided with a first electric push rod (44), the top of the first electric push rod (44) is provided with an angle sensor (45), and the rotating shaft of the angle sensor (45) is connected to a connecting plate (46). The bottom of the connecting plate (46) is connected to a fixing rod (48) through a connecting rod (47). The outer wall of the fixing rod (48) is rotatably fitted with a scraper (49), and the wrinkle removal wheel (411) is rotatably connected to the bottom of the scraper (49).

4. The metallized film unwinding and flattening device according to claim 3, characterized in that: A torsion spring (410) is provided on the scraper (49), and the two ends of the torsion spring (410) are fixedly connected to the fixing rod (48) and the scraper (49) respectively.

5. The metallized film unwinding and flattening device according to claim 4, characterized in that: The mounting plate (43) is provided with a swing mechanism (5), which includes a slide groove (51) and a second electric push rod (52). The slide groove (51) is opened on the connecting plate (46), and the second electric push rod (52) is mounted on the mounting plate (43). The output end of the second electric push rod (52) is fixedly connected to a moving block (53), and the top of the moving block (53) is fixedly connected to a moving rod (54). The moving rod (54) passes through the slide groove (51) and is slidably connected to the inner wall of the slide groove (51).

6. The metallized film unwinding and flattening device according to claim 5, characterized in that: The top of the moving rod (54) is fixedly connected to a limiting block, and the top of the mounting plate (43) is provided with an arc-shaped groove (55). The connecting rod (47) passes through the arc-shaped groove (55) and is slidably connected to the inner wall of the arc-shaped groove (55).

7. The metallized film unwinding and flattening device according to claim 6, characterized in that: The mounting plate (43) is provided with a collection mechanism (6), which includes an absorption port (61) and a suction fan (63). The absorption port (61) is located at the bottom of the scraper (49), and the suction fan (63) is installed at the bottom of the mounting plate (43). The input end of the suction fan (63) is connected to a main pipe (64), and the bottom of the main pipe (64) is connected to the scraper (49) through a connecting pipe (65). The output end of the suction fan (63) is connected to a waste discharge pipe (66).

8. The metallized film unwinding and flattening device according to claim 7, characterized in that: The scraper (49) is provided with a scraper blade (62), which is located on one side of the absorption port (61) and is in contact with the top of the wrinkle removal wheel (411).

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