A production process of a new energy vehicle license plate reflective film

Abstract

The application relates to a production process of a new energy automobile license plate reflective film, which comprises the following steps: step one, film forming, selecting isolation paper as a carrier to form a three-layer composite film, and carrying out drying through a drying device; step two, bead spraying and pressing, glass beads are pressed into shape; and step three, glue coating, coating pressure-sensitive glue to obtain a finished product, and the application relates to the technical field of reflective film production. The production process of the new energy automobile license plate reflective film blows off through the air outlets on the two air outlet pipelines arranged in V shapes, gradually blows off impurities and the like existing on the surface to the two sides of the reflective film to be accumulated, scrapes off dirt and an excessively thick coating layer through a scraper after gradual progression, can carry out flattening treatment during drying, and the angle can be adjusted in a wide range, and the application range is wider.

Description

Technical Field

[0001] This invention relates to the field of reflective film production technology, specifically a production process for reflective film for license plates of new energy vehicles. Background Technology

[0002] Reflective film is a pre-formed, thin-film retroreflective material that can be applied directly. It is manufactured using glass bead technology, microprism technology, synthetic resin technology, thin-film technology, coating technology, and micro-replication technology. During production, the reflective film needs to be air-dried to allow for easy winding.

[0003] The reflective film processing device described in patent number CN220083566U has the following problems during use:

[0004] (1) The reflective film cannot be preheated. If the temperature difference of the reflective film is too large, the reflective film will shrink and deform.

[0005] (2) The tilt angle is to one side, which makes it impossible to effectively blow and clean. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a production process for reflective film for license plates of new energy vehicles, solving the problems in reflective film production.

[0007] To achieve the above objectives, the present invention provides a manufacturing process for a reflective film for license plates of new energy vehicles, comprising the following steps:

[0008] Step 1: Film formation. Use release paper as a carrier to form a three-layer composite film, and dry it using a drying device.

[0009] Step 2: Bead pressing, pressing the glass microspheres into shape;

[0010] Step 3: Apply adhesive. Apply pressure-sensitive adhesive to obtain the finished product.

[0011] As a further aspect of the present invention: the drying process in step one using a drying device includes the following steps:

[0012] A1. Preheat the reflective film. Some of the hot air in the drying box enters the preheating box. The reflective film is transported to the feeding preheating box. The setting of multiple air vents allows for heat exchange with the outside, forming a gradually increasing temperature step to preheat the reflective film.

[0013] A2. The reflective film is conveyed into the drying chamber for drying and purging. The air outlets on the two V-shaped air outlet pipes are used for purging. While drying, impurities on the surface are gradually blown to both sides of the reflective film and accumulate. The movement of the double-rod cylinder drives the movement of the two guide frames, which in turn drives the two air outlet pipes to adjust their angle.

[0014] A3. The scraper removes the dirt accumulated on both sides of the reflective film. The drive cylinder moves the cleaning brush to sweep the dirt on the scraper surface into the collection box for recycling. Then the drive cylinder drives the cleaning brush to reset. At this time, the remaining dirt that has not been cleaned is scraped into the concave collection groove for recycling, preventing it from falling onto the surface of the reflective film.

[0015] As a further aspect of the present invention: the multiple vents in the preheating box of A1 allow for heat exchange with the outside environment, forming a gradually increasing temperature gradient to preheat the reflective film step by step.

[0016] As a further aspect of the present invention: during drying and purging in A2, the air outlets on the two V-shaped air outlet pipes are used for purging, and while drying, impurities on the surface are gradually blown to both sides of the reflective film to accumulate.

[0017] As a further aspect of the present invention: In A2, the movement of a double-rod cylinder drives the movement of two guide frames, and the movement of the two guide frames drives the adjustment of the angle of the two air outlet pipes, thereby adjusting the tilt angle of the air outlet pipes.

[0018] As a further aspect of the present invention: In A3, the cleaning brush is driven by a driving cylinder to scrape the dirt on the surface of the scraper into the collection box for recycling. Then, the driving cylinder drives the cleaning brush to reset. At this time, the remaining dirt that has not been cleaned is scraped into the concave collection groove for recycling, preventing it from falling onto the surface of the reflective film.

[0019] The drying equipment includes a drying chamber and a feeding preheating chamber located on one side of the drying chamber. Both the drying chamber and the feeding preheating chamber have channels for the reflective film to pass through, and conveying rollers for transporting the reflective film are rotatably installed within these channels. The drying chamber has an air outlet assembly for cleaning and drying the reflective film. The air outlet assembly includes a double-rod cylinder fixed inside the drying chamber and two air outlet pipes symmetrically arranged inside the drying chamber. Guide frames are rotatably connected to both ends of the piston rod of the double-rod cylinder. The two guide frames are slidably connected to the surfaces of the two air outlet pipes, respectively. Guide rods are fixed to the contact surfaces of the guide frames and the air outlet pipes. Guide grooves adapted to the surfaces of the guide rods are formed on the surfaces of the air outlet pipes. The two air outlet pipes are connected by a connector. An elastic sealing strip is provided at the connection between the connector and the air outlet duct. This elastic sealing strip ensures sufficient sealing while allowing the air outlet duct to rotate normally. The surface of the air outlet duct has multiple air outlets connected to the hot air source inlet duct. These air outlets are evenly distributed along the sides of the air outlet duct. The left side of the connector is designed with a V-shaped bevel. A guide rail is fixedly connected to the bottom of the drying chamber. Sliding sleeves are fixedly connected to the surfaces of both air outlet ducts, slidingly connected to the guide rail. The guide rail and sliding sleeves limit and support the rotation direction of the air outlet ducts, making their rotation more stable. The guide rail is an arc centered on the leftmost end of the connector. A scraper is fixedly connected to the side of the drying box. A drive cylinder is fixedly connected to the inner cavity of the drying box. A cleaning brush that abuts against the top of the scraper is fixedly connected to one end of the piston rod of the drive cylinder. A collection box located on the side of the scraper is fixedly connected to one side of the drying box. A concave collection groove is opened at one end of the scraper. Multiple ventilation holes are opened from left to right on the top of the preheating box, and the diameter of the ventilation holes gradually decreases from left to right. The preheating box is designed so that some of the hot air in the drying box enters the preheating box to preheat the incoming reflective film, preventing the reflective film from being directly delivered into the drying box, where the temperature changes drastically, causing the surface to shrink and affecting the quality of the finished product. Through the multiple ventilation holes, heat exchange with the outside is carried out, forming a gradually increasing temperature gradient, which can effectively prevent the reflective film from being directly delivered into the drying box. The reflective film is gradually preheated and then conveyed to the drying chamber for drying. During use, the reflective film is sequentially preheated in the feeding preheating box and then conveyed into the drying chamber. It is then blown clean through the air outlets on two V-shaped air ducts. While drying, impurities on the surface are gradually blown to both sides of the reflective film to accumulate. After this gradual process, a scraper removes dirt and excessive coating. During drying, the film can be leveled. A double-cylinder drives two guide frames, which in turn adjust the angle of the two air ducts. Adjusting the angle of the air ducts allows for the removal of residual dirt from the scraper surface. A drive cylinder then moves a cleaning brush to scrape the dirt from the scraper surface into a collection box for recycling.Then, the drive cylinder moves the cleaning brush to its original position. At this point, any remaining dirt is scraped into the recessed collection groove for recycling, preventing it from falling onto the reflective film surface. This effectively cleans the scraper without interfering with normal use.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. This invention uses air outlets on two V-shaped air ducts to blow away impurities on the surface of the reflective film while drying it. As the film accumulates, dirt and excessive coatings can be scraped off with a scraper. The film can be leveled during drying, and the angle is adjustable over a wide range, making it more widely applicable.

[0022] 2. This invention, through the setting of multiple vents, allows for heat exchange with the outside environment, forming a gradually increasing temperature gradient. This effectively preheats the reflective film step by step, preventing the reflective film from being directly transported into the drying oven where drastic temperature changes could cause surface shrinkage and affect the quality of the finished product. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the drying equipment of the present invention;

[0024] Figure 2 This is a top view of the drying equipment of the present invention;

[0025] Figure 3 For the present invention Figure 2 A magnified view of a section at point A in the middle;

[0026] Figure 4 For the present invention Figure 2 A magnified view of a section at point B in the middle;

[0027] Figure 5 This is a side view of the scraper of the present invention.

[0028] In the diagram: 1. Drying box; 2. Feeding preheating box; 3. Double-rod cylinder; 4. Guide frame; 5. Guide rod; 6. Guide groove; 7. Air outlet duct; 8. Air outlet; 9. Air inlet duct; 10. Connector; 11. Elastic sealing strip; 12. Vent hole; 13. Sliding sleeve; 14. Guide rail; 15. Conveyor roller; 16. Drive cylinder; 17. Collection box; 18. Cleaning brush; 19. Scraper; 20. Recessed collection groove. Detailed Implementation

[0029] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structure, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0030] Please see Figure 1-5 This invention provides a technical solution: a production process for reflective film for license plates of new energy vehicles, comprising the following steps:

[0031] Step 1: Film formation. Use release paper as a carrier to form a three-layer composite film, and dry it using a drying device.

[0032] Step 2: Bead pressing, pressing the glass microspheres into shape;

[0033] Step 3: Apply adhesive. Apply pressure-sensitive adhesive to obtain the finished product.

[0034] As a further aspect of the present invention: the drying process in step one using a drying device includes the following steps:

[0035] A1. Preheat the reflective film. A portion of the hot air in the drying box 1 enters the preheating box 2. The reflective film is transported to the feeding preheating box 2. The multiple vents 12 allow for heat exchange with the outside environment, forming a gradually increasing temperature step to preheat the reflective film.

[0036] A2. The reflective film is conveyed into the drying box 1 for drying and purging. The air outlets 8 on the two V-shaped air outlet pipes 7 are used for purging. While drying, impurities on the surface are gradually blown to both sides of the reflective film to accumulate. The movement of the double-rod cylinder 3 drives the movement of the two guide frames 4. The movement of the two guide frames 4 drives the two air outlet pipes 7 to adjust the angle, thus adjusting the tilt angle of the air outlet pipes 7.

[0037] A3. The scraper 19 scrapes off the dirt accumulated on both sides of the reflective film. The cleaning brush 18 is driven by the drive cylinder 16 to move and scrape the dirt on the surface of the scraper 19 into the collection box 17 for recycling. Then the drive cylinder 16 drives the cleaning brush 18 to reset. At this time, the remaining dirt that has not been cleaned is scraped into the concave collection groove 20 for recycling to prevent it from falling onto the surface of the reflective film.

[0038] The multiple vents 12 inside the preheating box 2 in A1 allow for heat exchange with the outside environment, forming a gradually increasing temperature gradient to preheat the reflective film.

[0039] During drying and purging in A2, the air outlets 8 on the two V-shaped air outlet ducts 7 are used for purging, and while drying, impurities on the surface are gradually blown to both sides of the reflective film to accumulate.

[0040] In A2, the movement of the double-rod cylinder 3 drives the movement of two guide frames 4, and the movement of the two guide frames 4 drives the two air outlet pipes 7 to adjust their angles, thus adjusting the tilt angle of the air outlet pipes 7.

[0041] In A3, the drive cylinder 16 drives the cleaning brush 18 to move and scrape the dirt on the surface of the scraper 19 into the collection box 17 for recycling. Then, the drive cylinder 16 drives the cleaning brush 18 to reset. At this time, the remaining dirt that has not been cleaned is scraped into the concave collection groove 20 for recycling, preventing it from falling onto the surface of the reflective film.

[0042] The drying equipment includes a drying chamber 1 and a feeding preheating chamber 2 located on one side of the drying chamber 1. Both the drying chamber 1 and the feeding preheating chamber 2 have channels for the reflective film to pass through, and conveying rollers 15 are rotatably installed within these channels to transport the reflective film. The drying chamber 1 has an air outlet assembly for cleaning and drying the reflective film. The air outlet assembly includes a double-rod cylinder 3 fixed inside the drying chamber 1 and two symmetrically arranged air outlet pipes 7 inside the drying chamber 1. Guide frames 4 are rotatably connected to both ends of the piston rod of the double-rod cylinder 3. The two guide frames 4 are slidably connected to the surfaces of the two air outlet pipes 7, respectively. Guide rods 5 are fixed to the contact surfaces of the guide frames 4 and the air outlet pipes 7. Guide grooves 6, adapted to the surfaces of the guide rods 5, are opened on the surface of the air outlet pipes 7. The two air outlet pipes... The air ducts 7 are connected by connectors 10. An elastic sealing strip 11 is installed at the connection between the connector 10 and the air outlet duct 7. The elastic sealing strip 11 provides sufficient sealing to ensure the air outlet duct 7 can rotate normally. Multiple air outlets 8, connected to the hot air source inlet duct 9, are connected to the surface of the air outlet duct 7. These outlets 8 are evenly distributed along the sides of the air outlet duct 7. The left side of the connector 10 is designed with a V-shaped bevel. A guide rail 14 is fixedly connected to the bottom of the drying chamber 1. Sliding sleeves 13, which are fitted onto and slidably connected to the guide rails 14, are fixedly connected to the surfaces of both air outlet ducts 7. The guide rails 14 and sliding sleeves 13 limit and support the rotation direction of the air outlet ducts 7, allowing for more precise rotation. To enhance stability, the guide rail 14 is an arc centered on the leftmost end of the connector 10. A scraper 19 is fixedly connected to the side of the drying chamber 1, and a drive cylinder 16 is fixedly connected to the inner cavity of the drying chamber 1. A cleaning brush 18, which abuts against the top of the scraper 19, is fixedly connected to one end of the piston rod of the drive cylinder 16. A collection box 17 located on one side of the scraper 19 is fixedly connected to one side of the drying chamber 1. A concave collection groove 20 is opened at one end of the scraper 19. Multiple ventilation holes 12 are opened from left to right on the top of the preheating box 2, and the diameter of the ventilation holes 12 gradually decreases from left to right. With the preheating box 2, a portion of the hot air in the drying chamber 1 enters the preheating box 2 to preheat the incoming reflective film, preventing the reflective film from being directly delivered into the drying chamber 1 and causing drastic temperature changes. Surface shrinkage affects the quality of the finished product. Multiple ventilation holes 12 allow for heat exchange with the outside environment, creating a gradually increasing temperature gradient that effectively preheats the reflective film. The film is then conveyed to the drying chamber 1 for drying. During use, the reflective film is preheated in the feeding preheating box 2 and then conveyed to the drying chamber 1. It is then blown clean through the air outlets 8 on the two V-shaped air ducts 7. While drying, impurities on the surface are gradually blown towards the sides of the reflective film. After this gradual process, a scraper 19 removes dirt and excessively thick coatings, allowing for smoothing during drying. The movement of the double-rod cylinder 3 drives the movement of two guide frames 4, which in turn adjusts the angle of the two air outlet ducts 7.Adjust the angle of the air outlet duct 7. During use, dirt may remain on the surface of the scraper 19. The drive cylinder 16 moves the cleaning brush 18 to scrape the dirt from the scraper 19 into the collection box 17 for recycling. Then, the drive cylinder 16 moves the cleaning brush 18 back to its original position. At this point, any remaining dirt is scraped into the concave collection groove 20 for recycling, preventing it from falling onto the reflective film surface. This effectively cleans the scraper 19 without interfering with normal use.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A manufacturing process for a reflective film for license plates of new energy vehicles, characterized in that: Includes the following steps: Step 1: Film formation. Use release paper as a carrier to form a three-layer composite film, and dry it using a drying device. Step 2: Bead pressing, pressing the glass microspheres into shape; Step 3: Apply adhesive. Apply pressure-sensitive adhesive to obtain the finished product. Step one, drying using a drying device, includes the following steps: A1. Preheat the reflective film. Part of the hot air in the drying box (1) enters the feeding preheating box (2), and the reflective film is transported to the feeding preheating box (2) for preheating. A2. The reflective film is conveyed into the drying box (1) for drying and purging; A3. Use a scraper (19) to scrape off the dirt accumulated on both sides of the reflective film; In A1, heat exchange occurs with the outside through multiple vents (12) inside the feed preheating box (2), forming a gradually increasing temperature gradient to preheat the reflective film step by step. During drying and purging in A2, the air outlets (8) on the two V-shaped air outlet pipes (7) are purged, and while drying, the impurities on the surface are gradually blown to both sides of the reflective film to accumulate. In A2, the movement of the double-rod cylinder (3) drives the movement of two guide frames (4), and the movement of the two guide frames (4) drives the two air outlet pipes (7) to adjust the angle, thereby adjusting the tilt angle of the air outlet pipes (7); In A3, the driving cylinder (16) drives the cleaning brush (18) to move, scraping the dirt on the surface of the scraper (19) into the collection box (17) for recycling. Then, the driving cylinder (16) drives the cleaning brush (18) to reset. At this time, the remaining dirt that has not been cleaned is scraped into the concave collection groove (20) for recycling, preventing it from falling onto the surface of the reflective film. The drying equipment includes a drying box (1) and a feeding preheating box (2) set on one side of the drying box (1). The inner cavity of both the drying box (1) and the feeding preheating box (2) is provided with a channel for the reflective film to pass through, and a conveyor for transporting the reflective film is rotatably set in the channel. The inner cavity of the drying chamber (1) is equipped with an air outlet assembly for cleaning and drying the reflective film. The air outlet assembly includes a double-rod cylinder (3) fixed in the inner cavity of the drying chamber (1) and two air outlet pipes (7) symmetrically arranged in the drying chamber (1). Both ends of the piston rod of the double-rod cylinder (3) are rotatably connected to guide frames (4). The two guide frames (4) are slidably connected to the surfaces of the two air outlet pipes (7) respectively. Guide rods (5) are fixed on the contact surfaces of the guide frames (4) and the air outlet pipes (7). Guide grooves (6) adapted to the surfaces of the guide rods (5) are opened on the surface of the air outlet pipes (7). The two air outlet pipes (7) The two air outlets (7) are connected by a connector (10). An elastic sealing strip (11) is provided at the connection between the connector (10) and the air outlet duct (7). The surface of the air outlet duct (7) is connected to multiple air outlets (8) that are connected to the hot air source inlet duct (9). Multiple air outlets (8) are provided and are evenly distributed on the side of the air outlet duct (7). The left side of the connector (10) is set as a V-shaped slope. The bottom of the drying box (1) is fixedly connected to a guide slide rail (14). The surfaces of the two air outlet ducts (7) are fixedly connected to sliding sleeves (13) that are sleeved on the guide slide rail (14) and slidably connected to it. The guide slide rail (14) is a sliding sleeve that is slidably connected to the guide slide rail (14). The leftmost end of the connector (10) is an arc shape with the center of the circle. A scraper (19) is fixedly connected to the side of the drying box (1). A drive cylinder (16) is fixedly connected to the inner cavity of the drying box (1). A cleaning brush (18) that abuts against the top of the scraper (19) is fixedly connected to one end of the piston rod of the drive cylinder (16). A collection box (17) located on the side of the scraper (19) is fixedly connected to one side of the drying box (1). A concave collection groove (20) is opened at one end of the scraper (19). Multiple air holes (12) are opened from left to right on the top of the feeding preheating box (2), and the diameter of the multiple air holes (12) gradually decreases from left to right.

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