A privacy base film with micro-louvre structure, a preparation process and equipment

Abstract

The application discloses a kind of privacy base film with micro louvers structure and preparation process, equipment, belong to the field of privacy film.The application of a kind of privacy base film with micro louvers structure, comprising: polyurethane film and privacy film, the privacy film is located in the lower end surface of polyurethane film, and the upper end of the privacy film is sequentially arranged with light transmission unit and privacy unit.The application solves the problem that the preparation process of the prior art privacy film does not use mechanical integrated forming process, resulting in low preparation efficiency and unstable product quality.The upper surface of the privacy film is formed by the louver forming layer, the polyurethane film is pressed down, the surface of the polyurethane film is attached to the surface of the privacy film, the upper end of the privacy film is formed by UV structure transfer into light transmission unit and privacy unit, and the equipment is automatically processed into shape by electrification, to realize the best processing efficiency, and improve the working effect, effectively guarantee the product quality.

Description

Technical Field

[0001] This invention relates to the field of privacy film technology, specifically to a privacy base film with a micro-louver structure and its preparation process and equipment. Background Technology

[0002] Currently, there are some privacy screen protectors on the market that offer privacy protection. They work by using ultra-fine louvered optical technology, ensuring that the content displayed on the screen is only visible to the user directly in front, with a viewing angle of 60-90 degrees. Anyone viewing from the sides will only see a completely black screen. This effectively protects business secrets and personal privacy, allowing users to use computers, mobile phones, and other electronic devices freely in the office, while traveling, in public places, and in any environment.

[0003] In the prior art, such as Chinese patent CN112123881B: a privacy film and its preparation method, the technical solution of this patent eliminates the moiré pattern and stringing pattern phenomenon generated after the privacy film is bonded to the display screen, and increases the light transmittance by 3% to 10%, making the displayed screen clearer and having a better privacy effect; the preparation method is simple, easy to implement and control, and convenient to industrialize.

[0004] However, in the existing privacy film manufacturing process, the mechanical one-piece molding process is not used, resulting in low manufacturing efficiency and unstable product quality.

[0005] To address these shortcomings, it is essential to design a privacy film with a micro-louver structure and to develop its preparation process and equipment. Summary of the Invention

[0006] The purpose of this invention is to provide a privacy film with a micro-louver structure and its preparation process and equipment, which can solve the problem that the privacy film preparation process in the prior art does not adopt a mechanical one-piece molding process, resulting in low preparation efficiency and unstable product quality.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a privacy film with a micro-louver structure, comprising:

[0008] A polyurethane film and a privacy film, wherein the privacy film is located on the lower end face of the polyurethane film, and the upper end of the privacy film is provided with light-transmitting units and privacy units arranged in sequence.

[0009] The privacy film with a micro-louver structure is manufactured using a device for preparing a privacy film with a micro-louver structure, comprising:

[0010] The first winding roller and the second winding roller are provided. There are two first winding rollers for winding polyurethane film and two second winding rollers for winding privacy film. The two second winding rollers are located on both sides below the first winding roller, and a drive motor is provided on the outside of the first winding roller.

[0011] A stamping fixture for cutting polyurethane film is located above the first take-up roller. The stamping fixture includes a lifting frame and a sliding frame. The lifting frame is located inside the sliding frame and is slidably connected to the sliding frame.

[0012] A forming frame for curing the adhesive privacy film is located below the two second take-up rollers, the forming frame including a feed box, the interior of which is equipped with a movable feed plate for electrically adjustable angle;

[0013] A lifting mold frame, used for stamping the privacy film, is located between the privacy film and the polyurethane film, and a pressing mold is slidably connected inside the lifting mold frame.

[0014] Preferably, a device bracket is installed at the lower end of the stamping fixture, a reinforcing rib is installed between the device bracket and the stamping fixture, a fastening frame is welded between the upper end of the stamping fixture and the reinforcing rib, and a support base is welded to both sides of the lower end of the device bracket.

[0015] Preferably, an integrally formed auxiliary bracket is provided on the outer side of the support base, the second take-up roller is rotatably connected to the upper end of the auxiliary bracket through a bearing, and a first servo motor is installed on the outer side of the second take-up roller. The motor shaft of the first servo motor is connected to the second take-up roller through a coupling. Fixing frames are installed on both sides of the lower part of the first take-up roller.

[0016] Preferably, a hydraulic pump is installed at the upper end of the stamping fixture, and a hydraulic cylinder is installed at the lower end of the hydraulic pump. The upper end of the hydraulic cylinder is connected to the stamping fixture by fixing screws. An integrally formed mounting groove is provided on the upper surface of the lifting frame. The lower end of the hydraulic cylinder extends into the mounting groove and is connected to the lifting frame by fixing screws. The sliding frame is welded to the device bracket.

[0017] Preferably, the lifting frame is provided with a limit slide rail on its exterior, and a cutting box is provided at the lower end of the lifting frame. The cutting box is connected to the lifting frame by fixing screws. A cutting tool is fixedly connected to the lower end face of the cutting box by a buckle. A heating pressure plate is provided inside the cutting box. A second servo motor is installed on the upper end face of the heating pressure plate. The second servo motor is embedded inside the lifting frame and connected to the lifting frame by fixing screws. A threaded screw is connected to the lower end of the second servo motor and extends into the interior of the heating pressure plate and is threadedly connected to the heating pressure plate. Guide rods are slidably connected to the interior of both sides of the heating pressure plate.

[0018] Preferably, monitoring boxes are installed on both sides of the device bracket. The monitoring boxes are connected to the device bracket by fixing screws, and laser ranging sensors are installed on the lower end face of both monitoring boxes. The laser ranging sensors are used to detect the position of the polyurethane film and the privacy film. The laser ranging sensors are electrically connected to the electrical equipment through a PLC module.

[0019] Preferably, a fixing plate is installed between the lower part of the forming frame and the auxiliary support. A drive electrical box is installed on both sides of the lower end of the forming frame. An electric motor is installed inside the drive electrical box, and the motor shaft of the electric motor extends to the outside of the drive electrical box and is rotatably connected to the drive electrical box through a bearing. A movable roller is installed above the drive electrical box. A first electric cylinder is installed between the movable roller and the drive electrical box at both ends. The upper end of the first electric cylinder is rotatably connected to the movable roller through a rotating shaft, and the lower end of the first electric cylinder is fixedly connected to the motor shaft of the electric motor through a side magnetic locking shaft. Limiting rollers are installed on both sides of the upper end of the forming frame. A bearing seat is installed on the outer side of the limiting roller, and the limiting roller is rotatably connected to the forming frame through the bearing seat.

[0020] Preferably, the feeding box is embedded inside the forming frame and connected to the forming frame by fixing screws, and motor boxes are installed on both sides of the lower end of the feeding box. A rotating shaft is installed inside the feeding box. The movable feeding plate is movably connected to the feeding box through the rotating shaft. A second electric cylinder is installed on both sides of the lower end of the movable feeding plate. Both ends of the second electric cylinder are movably connected to the motor box and the movable feeding plate respectively through connecting ears.

[0021] Preferably, the lifting mold frame has an integrally formed sliding groove inside, and the pressing mold extends into the lifting mold frame and is slidably connected to the lifting mold frame through the sliding groove. A glue tank is installed on the upper end face of the pressing mold, and a glue outlet hole is provided on the lower end face of the glue tank. A solenoid valve is installed inside the glue outlet hole. Resistance heating tubes are installed on both sides of the outside of the glue tank, and an integrally formed louvered forming layer is provided on the lower end face of the pressing mold. Sliding holes are provided on both sides of the inside of the pressing mold, and a threaded hole is provided in the middle of the inside of the pressing mold. An electric lead screw and a sliding rod are installed on one side of the inside of the lifting mold frame. The electric lead screw passes through the threaded hole and is threadedly connected to the pressing mold, and the sliding rod passes through the sliding hole and is slidably connected to the pressing mold. A third electric cylinder is installed on both sides of the lower part of the lifting mold frame, and a support plate is installed on one side of the lifting mold frame. The support plate passes through the lifting mold frame and is slidably connected to the lifting mold frame.

[0022] A process for preparing a privacy film with a micro-louver structure includes the following steps:

[0023] Step 1: Wrap both ends of the polyurethane film around the outside of the two first take-up rollers, and attach the polyurethane film above the limiting roller and below the movable roller. Wrap both ends of the privacy film around the outside of the two second take-up rollers.

[0024] Step 2: Adjust the first servo motor and drive motor to drive the second take-up roller and the first take-up roller to rotate, so that the polyurethane film and the privacy film move.

[0025] Step 3: Monitor the position of the polyurethane film and the privacy film using a laser rangefinder. When the intersection of the polyurethane film and the privacy film is complete, the second winding roller and the first winding roller stop rotating, the third electric cylinder retracts, and drives the lifting mold frame and the pressing mold to press down on the surface of the privacy film. The upper surface of the pressing mold and the privacy film is heated by the resistance heating tube, and the upper surface of the privacy film is pressed and shaped by the louver forming layer.

[0026] Step 4: Open the solenoid valve, introduce the adhesive through the dispensing hole, and shrink the pressing mold into the lifting mold frame through the electric screw. Drive the threaded screw through the second servo motor to press the polyurethane film down through the heating platen, so that the surface of the polyurethane film is attached to the surface of the privacy film. The upper end of the privacy film forms a light-transmitting unit and a privacy unit through the UV structure transfer.

[0027] Step 5: Shrink the heating platen and extend the hydraulic cylinder to lower the lifting frame, so that the cutting tool cuts the polyurethane film and the privacy film. The formed privacy base film falls above the movable unloading plate. By adjusting the second electric cylinder, the movable unloading plate is folded to perform the unloading operation.

[0028] Step Six: readjust the first servo motor and drive motor again to drive the second take-up roller and the first take-up roller to rotate, and prepare the subsequent privacy protection base film.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] 1. This privacy film with a micro-louver structure and its preparation process and equipment, during operation, uses a laser rangefinder to monitor the positions of the polyurethane film and the privacy film. When the intersection of the polyurethane film and the privacy film is complete, the second and first take-up rollers stop rotating, the third electric cylinder retracts, and drives the lifting mold frame and the pressing mold to press down on the surface of the privacy film. The upper surface of the pressing mold and the privacy film is heated by a resistance heating tube, and the upper surface of the privacy film is pressed and shaped by the louver forming layer. Adhesive is introduced through the glue outlet hole, and the pressing mold is retracted into the lifting mold frame by an electric screw. The second servo motor drives the threaded screw to press down the heating platen on the polyurethane film, so that the surface of the polyurethane film is attached to the surface of the privacy film. The upper end of the privacy film forms a light-transmitting unit and a privacy unit through UV structure transfer. The process is automated by electrified equipment to achieve optimal processing efficiency, improve work effect, and effectively ensure product quality.

[0031] 2. This privacy film with a micro-louver structure, along with its preparation process and equipment, allows the prepared film to be lowered by shrinking the heating plate and extending the hydraulic cylinder, causing the lifting frame to cut the polyurethane film and privacy film with a cutting tool. The formed privacy film falls onto the movable unloading plate. By adjusting the second electric cylinder, the movable unloading plate is folded to perform the unloading operation. A receiving device can be set below the unloading box to automate the unloading process, reducing steps, improving work efficiency, facilitating operation, and saving labor costs. Attached Figure Description

[0032] Figure 1 This is an isometric view of the side view of the present invention;

[0033] Figure 2 This is a top-view axonometric view of the present invention;

[0034] Figure 3 This is an isometric view of the front view of the present invention;

[0035] Figure 4 This is an axonometric view of the invention from below;

[0036] Figure 5 This is an isometric view of the front view of the stamping fixture of the present invention;

[0037] Figure 6 This is an isometric view of the stamping fixture of the present invention from a bottom angle;

[0038] Figure 7 This is a diagram showing the internal structure of the stamping fixture of the present invention;

[0039] Figure 8 This is a top-view isometric view of the forming frame of the present invention;

[0040] Figure 9 This is an isometric view of the movable feed plate during the feeding process of the present invention;

[0041] Figure 10 This is an isometric view of the lifting mold frame of the present invention from the side.

[0042] Figure 11 This is an isometric view of the pressing mold of the present invention from below;

[0043] Figure 12 This is a partial internal structure diagram of the base film of the present invention.

[0044] In the diagram: 1. Device bracket; 101. Support base; 102. Auxiliary bracket; 103. Reinforcing rib; 2. First take-up roller; 201. Fixing frame; 202. Polyurethane film; 3. Second take-up roller; 301. Privacy film; 3011. Light-transmitting unit; 3012. Privacy unit; 302. First servo motor; 4. Stamping fixture; 401. Fastening frame; 402. Hydraulic pump; 403. Hydraulic cylinder; 404. Lifting frame; 4041. Limiting slide rail; 4042. Mounting slot; 4043. Cutting box; 4044. Cutting tool; 4045. Heating pressure plate; 4046. Second servo motor; 4047. Guide... 405. Sliding frame; 5. Monitoring box; 501. Laser rangefinder sensor; 6. Molding frame; 601. Drive box; 602. First electric cylinder; 603. Movable roller; 604. Feed box; 6041. Movable feed plate; 6042. Motor box; 6043. Second electric cylinder; 6044. Rotating shaft; 7. Limiting roller; 701. Bearing seat; 8. Lifting mold frame; 801. Pressing mold; 8011. Glue tank; 8012. Resistance heating tube; 8013. Louver forming layer; 8014. Sliding hole; 8015. Threaded hole; 8016. Glue outlet hole; 802. Support plate; 803. Third electric cylinder. Detailed Implementation

[0045] 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.

[0046] To address the technical issues of low manufacturing efficiency and inconsistent product quality in existing privacy film manufacturing processes, which do not employ a mechanically integrated molding process, please refer to [link to relevant documentation]. Figure 1 - Figure 4 , Figure 10 , Figure 12 The following technical solutions are provided:

[0047] A privacy film with a micro-louver structure includes:

[0048] The polyurethane film 202 and the privacy film 301 are provided. The privacy film 301 is located on the lower end face of the polyurethane film 202, and the upper end of the privacy film 301 is provided with a light-transmitting unit 3011 and a privacy unit 3012 arranged in sequence.

[0049] The privacy film with a micro-louver structure is achieved using a device for preparing a privacy film with a micro-louver structure, comprising:

[0050] The first winding roller 2 and the second winding roller 3 are provided. There are two first winding rollers 2 for winding polyurethane film 202 and two second winding rollers 3 for winding privacy film 301. The two second winding rollers 3 are located on the lower sides of the first winding roller 2, and a drive motor is provided on the outside of the first winding roller 2.

[0051] The stamping fixture 4, used for cutting the polyurethane film 202, is located above the first take-up roller 2. The stamping fixture 4 includes a lifting frame 404 and a sliding frame 405. The lifting frame 404 is located inside the sliding frame 405 and is slidably connected to the sliding frame 405.

[0052] The forming frame 6, which is used to cure the adhesive privacy film, is located below the two second take-up rollers 3. The forming frame 6 includes a feed box 604, and a movable feed plate 6041 for electric angle adjustment is installed inside the feed box 604.

[0053] The lifting mold frame 8 is used for stamping the privacy film 301. The lifting mold frame 8 is located between the privacy film 301 and the polyurethane film 202. The pressing mold 801 is slidably connected inside the lifting mold frame 8.

[0054] Specifically, during operation, when the polyurethane film 202 and the privacy film 301 intersect completely, the second take-up roller 3 and the first take-up roller 2 stop rotating, driving the lifting mold frame 8 and the pressing mold 801 to press down on the surface of the privacy film 301. The pressing mold 801 applies pressure to the upper surface of the privacy film 301 to form it. Then, the lifting frame 404 presses down on the polyurethane film 202, so that the surface of the polyurethane film 202 is attached to the surface of the privacy film 301. The upper end of the privacy film 301 forms a light-transmitting unit 3011 and a privacy unit 3012 through UV structure transfer. The process is automated through electrified equipment to achieve the best processing efficiency, improve work effect, and effectively ensure product quality.

[0055] To address the technical problem of complex and unstable fabrication apparatus structures in existing technologies, please refer to [the relevant documentation]. Figure 1 - Figure 2 The following technical solutions are provided:

[0056] A device bracket 1 is installed at the lower end of the stamping fixture 4. A reinforcing rib 103 is installed between the device bracket 1 and the stamping fixture 4. A fastening frame 401 is welded between the upper end of the stamping fixture 4 and the reinforcing rib 103. Support bases 101 are welded to both sides of the lower end of the device bracket 1.

[0057] An integrally formed auxiliary bracket 102 is provided on the outer side of the support base 101. The second take-up roller 3 is rotatably connected to the upper end of the auxiliary bracket 102 through a bearing. A first servo motor 302 is installed on the outer side of the second take-up roller 3. The motor shaft of the first servo motor 302 is connected to the second take-up roller 3 through a coupling. Fixing brackets 201 are installed on both sides of the lower part of the first take-up roller 2.

[0058] Specifically, the position of the stamping fixture 4 is limited by the reinforcing rib 103, and the second take-up roller 3 is positioned by the support base 101 and the auxiliary bracket 102, so that the position of the second take-up roller 3 is kept stable and the working effect is improved. The fixing frame 201 works with the first take-up roller 2 to perform the winding work.

[0059] To address the technical problem in existing technologies where the privacy film is difficult to unload after molding, hindering continuous operation, please refer to [link to relevant documentation]. Figure 4 - Figure 9 The following technical solutions are provided:

[0060] A hydraulic pump 402 is installed at the upper end of the stamping fixture 4, and a hydraulic cylinder 403 is installed at the lower end of the hydraulic pump 402. The upper end of the hydraulic cylinder 403 is connected to the stamping fixture 4 by fixing screws. An integrally formed mounting groove 4042 is provided on the upper surface of the lifting frame 404. The lower end of the hydraulic cylinder 403 extends into the mounting groove 4042 and is connected to the lifting frame 404 by fixing screws. The sliding frame 405 is welded to the device bracket 1.

[0061] The lifting frame 404 is provided with a limit slide rail 4041 on its exterior. A cutting box 4043 is provided at the lower end of the lifting frame 404. The cutting box 4043 is connected to the lifting frame 404 by fixing screws. A cutting blade 4044 is fixedly connected to the lower end face of the cutting box 4043 by a buckle. A heating pressure plate 4045 is provided inside the cutting box 4043. A second servo motor 4046 is installed on the upper end face of the heating pressure plate 4045. The second servo motor 4046 is embedded in the interior of the lifting frame 404 and connected to the lifting frame 404 by fixing screws. A threaded screw is connected to the lower end of the second servo motor 4046. The threaded screw extends into the interior of the heating pressure plate 4045 and is threadedly connected to the heating pressure plate 4045. Guide rods 4047 are slidably connected to the interior of both sides of the heating pressure plate 4045.

[0062] A fixing plate is installed between the lower part of the forming frame 6 and the auxiliary support 102. A drive box 601 is installed on both sides of the lower end of the forming frame 6. An electric motor is installed inside the drive box 601, and the motor shaft of the electric motor extends to the outside of the drive box 601 and is rotatably connected to the drive box 601 through a bearing. A movable roller 603 is installed on the upper part of the drive box 601. A first electric cylinder 602 is installed between the movable roller 603 and the drive box 601 at both ends. The upper end of the first electric cylinder 602 is rotatably connected to the movable roller 603 through a rotating shaft, and the lower end of the first electric cylinder 602 is fixedly connected to the motor shaft of the electric motor through a side magnetic locking shaft. Limiting rollers 7 are installed on both sides of the upper end of the forming frame 6. A bearing seat 701 is installed on the outer side of the limiting roller 7, and the limiting roller 7 is rotatably connected to the forming frame 6 through the bearing seat 701.

[0063] The feeding box 604 is embedded inside the forming frame 6 and connected to the forming frame 6 by fixing screws. Motor boxes 6042 are installed on both sides of the lower end of the feeding box 604. A rotating shaft 6044 is installed inside the feeding box 604. The movable feeding plate 6041 is movably connected to the feeding box 604 through the rotating shaft 6044. A second electric cylinder 6043 is installed on both sides of the lower end of the movable feeding plate 6041. Both ends of the second electric cylinder 6043 are movably connected to the motor box 6042 and the movable feeding plate 6041 respectively through connecting ears.

[0064] Specifically, after the base film is prepared, the heating plate 4045 is contracted and the hydraulic cylinder 403 is extended, which drives the lifting frame 404 to descend, so that the cutting tool 4044 cuts the polyurethane film 202 and the privacy film 301. The formed privacy base film falls above the movable unloading plate 6041. By adjusting the second electric cylinder 6043, the movable unloading plate 6041 is folded to perform the unloading work. The receiving device can be set below the unloading box 604 to realize the automated receiving work, reduce the number of processes, improve work efficiency, facilitate operation, and save labor costs. In addition, during the processing, the position of the movable roller 603 can be adjusted by adjusting the first electric cylinder 602 to assist the processing work and improve the positional stability of the film.

[0065] To address the technical problem in existing technologies where the position of the base film cannot be guaranteed during the preparation process, thus affecting operational accuracy, please refer to [link to relevant documentation]. Figure 3 The following technical solutions are provided:

[0066] Monitoring boxes 5 are installed on both sides of the device bracket 1. The monitoring boxes 5 are connected to the device bracket 1 by fixing screws. A laser range sensor 501 is installed on the lower end face of both monitoring boxes 5. The laser range sensor 501 is used to detect the position of the polyurethane film 202 and the privacy film 301. The laser range sensor 501 is electrically connected to the electrical equipment through the PLC module.

[0067] Specifically, during operation, the position of the polyurethane film 202 and the privacy film 301 can be monitored by the laser range sensor 501. When the intersection of the polyurethane film 202 and the privacy film 301 is complete, the second winding roller 3 and the first winding roller 2 stop rotating to perform automated positioning.

[0068] To address the technical problem of poor molding performance of privacy films in existing technologies, please refer to [link / reference needed]. Figure 10 - Figure 11 The following technical solutions are provided:

[0069] The lifting mold frame 8 has an integrally formed sliding groove inside. The pressing mold 801 extends into the lifting mold frame 8 and is slidably connected to the lifting mold frame 8 through the sliding groove. A glue tank 8011 is installed on the upper end face of the pressing mold 801, and a glue outlet 8016 is provided on the lower end face of the glue tank 8011. A solenoid valve is installed inside the glue outlet 8016. Resistance heating tubes 8012 are installed on both sides of the glue tank 8011. An integrally formed louvered forming layer 8013 is provided on the lower end face of the pressing mold 801. The inner sides are provided with sliding holes 8014, and the middle of the inner side of the pressing mold 801 is provided with a threaded hole 8015. An electric screw and a sliding rod are installed on one side of the inner side of the lifting mold frame 8. The electric screw passes through the threaded hole 8015 and is threadedly connected to the pressing mold 801. The sliding rod passes through the sliding hole 8014 and is slidably connected to the pressing mold 801. A third electric cylinder 803 is installed on both sides of the lower side of the lifting mold frame 8. A support plate 802 is installed on one side of the lifting mold frame 8. The support plate 802 passes through the lifting mold frame 8 and is slidably connected to the lifting mold frame 8.

[0070] Specifically, the third electric cylinder 803 can be retracted to drive the lifting mold frame 8 and the pressing mold 801 to press down on the surface of the privacy film 301. The upper surface of the pressing mold 801 and the privacy film 301 is heated by the resistance heating tube 8012, and the upper surface of the privacy film 301 is pressed and shaped by the louver forming layer 8013. Then, by opening the solenoid valve, the adhesive is introduced through the glue outlet 8016, and the pressing mold 801 is retracted into the lifting mold frame 8 by the electric screw to perform the bonding work. The automated storage improves work efficiency, and the bonding effect is ensured by the resistance heating tube 8012 and the introduced adhesive, thus ensuring product quality.

[0071] Please see Figure 1 - Figure 12 A process for preparing a privacy film with a micro-louver structure includes the following steps:

[0072] Step 1: Wrap both ends of the polyurethane film 202 around the outside of the two first take-up rollers 2, and attach the polyurethane film 202 above the limiting roller 7 and below the movable roller 603. Wrap both ends of the privacy film 301 around the outside of the two second take-up rollers 3.

[0073] Step 2: Adjust the first servo motor 302 and the drive motor to drive the second take-up roller 3 and the first take-up roller 2 to rotate, so that the polyurethane film 202 and the privacy film 301 move.

[0074] Step 3: The position of the polyurethane film 202 and the privacy film 301 is monitored by the laser range sensor 501. When the intersection of the polyurethane film 202 and the privacy film 301 is complete, the second winding roller 3 and the first winding roller 2 stop rotating, the third electric cylinder 803 is retracted, and the lifting mold frame 8 and the pressing mold 801 are driven to press down on the surface of the privacy film 301. The upper surface of the pressing mold 801 and the privacy film 301 is heated by the resistance heating tube 8012, and the upper surface of the privacy film 301 is pressed and formed by the louver forming layer 8013.

[0075] Step 4: Open the solenoid valve, introduce the adhesive through the glue outlet 8016, and shrink the pressing mold 801 into the lifting mold frame 8 through the electric screw. Drive the threaded screw through the second servo motor 4046 to make the heating platen 4045 press down the polyurethane film 202, so that the surface of the polyurethane film 202 is attached to the surface of the privacy film 301. The upper end of the privacy film 301 forms a light-transmitting unit 3011 and a privacy unit 3012 through UV structure transfer.

[0076] Step 5: Shrink the heating platen 4045 and extend the hydraulic cylinder 403 to drive the lifting frame 404 down, so that the cutting tool 4044 cuts the polyurethane film 202 and the privacy film 301. The formed privacy base film falls above the movable unloading plate 6041. By adjusting the second electric cylinder 6043, the movable unloading plate 6041 is folded to carry out the unloading work.

[0077] Step 6: Adjust the first servo motor 302 and the drive motor again to drive the second take-up roller 3 and the first take-up roller 2 to rotate, and prepare the subsequent privacy protection base film.

[0078] Working principle: The two ends of the polyurethane film 202 are wrapped around the outside of the two first take-up rollers 2, and the polyurethane film 202 is attached above the limiting roller 7 and below the movable roller 603. The two ends of the privacy film 301 are wrapped around the outside of the two second take-up rollers 3. The position of the stamping fixture 4 is limited by the reinforcing rib 103, and the second take-up rollers 3 are positioned by the support base 101 and the auxiliary bracket 102 to keep the position of the second take-up rollers 3 stable and improve the working effect. The fixed frame 201 works with the first take-up rollers 2 to perform the winding operation. The first servo motor 302 and the drive motor are adjusted to drive the second take-up rollers 3 and the first take-up rollers 2 to rotate, so that the polyurethane film 202 is wrapped around the outside of the two first take-up rollers 2. The polyurethane film 202 and the privacy film 301 move. During operation, the position of the polyurethane film 202 and the privacy film 301 can be monitored by the laser range sensor 501. When the intersection of the polyurethane film 202 and the privacy film 301 is complete, the second take-up roller 3 and the first take-up roller 2 stop rotating and perform automated positioning. The third electric cylinder 803 retracts, driving the lifting mold frame 8 and the pressing mold 801 to press down on the surface of the privacy film 301. The upper surface of the pressing mold 801 and the privacy film 301 is heated by the resistance heating tube 8012, and the upper surface of the privacy film 301 is pressed and shaped by the louver forming layer 8013. The solenoid valve is then opened. The adhesive is introduced through the adhesive outlet 8016, and the electric screw shrinks the pressing mold 801 into the lifting mold frame 8. The second servo motor 4046 drives the threaded screw, causing the heating platen 4045 to press down on the polyurethane film 202, so that the surface of the polyurethane film 202 is attached to the surface of the privacy film 301. The upper end of the privacy film 301 forms a light-transmitting unit 3011 and a privacy unit 3012 through UV structure transfer. After the base film is prepared, the heating platen 4045 is shrunken and the hydraulic cylinder 403 is extended, which drives the lifting frame 404 to descend, so that the cutting tool 4044 cuts the polyurethane film 202 and the privacy film 301, forming the desired shape. The privacy film falls onto the movable feed plate 6041. By adjusting the second electric cylinder 6043, the movable feed plate 6041 is folded to perform the feeding operation. A receiving device can be set below the feed box 604 to achieve automated receiving, reduce the number of processes, improve work efficiency, facilitate operation, and save labor costs. During the processing, the position of the movable roller 603 can be adjusted by adjusting the first electric cylinder 602 to assist in the processing and improve the positional stability of the film. The first servo motor 302 and the drive motor are adjusted again to drive the second winding roller 3 and the first winding roller 2 to rotate, thus preparing the subsequent privacy film.

[0079] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0080] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for preparing a privacy film with a micro-louver structure, comprising: The first winding roller (2) and the second winding roller (3) are provided. There are two first winding rollers (2) for winding polyurethane film (202) and two second winding rollers (3) for winding privacy film (301). The two second winding rollers (3) are located on the lower sides of the first winding roller (2) respectively, and a drive motor is provided on the outside of the first winding roller (2). The stamping fixture (4) for cutting polyurethane film (202) is located above the first take-up roller (2). The stamping fixture (4) includes a lifting frame (404) and a sliding frame (405). The lifting frame (404) is located inside the sliding frame (405) and is slidably connected to the sliding frame (405). A forming frame (6) for curing adhesive privacy film is located below the two second take-up rollers (3). The forming frame (6) includes a feed box (604) with a movable feed plate (6041) for electrically adjusting the angle installed inside the feed box (604). The lifting mold frame (8) for stamping the privacy film (301) is located between the stamping privacy film (301) and the polyurethane film (202), and the pressing mold (801) is slidably connected inside the lifting mold frame (8).

2. The equipment for preparing a privacy film with a micro-louver structure according to claim 1, characterized in that: The lower end of the stamping fixture (4) is equipped with a device bracket (1), and a reinforcing rib (103) is installed between the device bracket (1) and the stamping fixture (4). A fastening frame (401) is welded between the upper end of the stamping fixture (4) and the reinforcing rib (103). Support bases (101) are welded to both sides of the lower end of the device bracket (1).

3. The apparatus for preparing a privacy film with a micro-louver structure according to claim 2, characterized in that: An integrally formed auxiliary bracket (102) is provided on the outer side of the support base (101). The second take-up roller (3) is rotatably connected to the upper end of the auxiliary bracket (102) through a bearing. A first servo motor (302) is installed on the outer side of the second take-up roller (3). The motor shaft of the first servo motor (302) is connected to the second take-up roller (3) through a coupling. Fixing frames (201) are installed on both sides of the first take-up roller (2).

4. The equipment for preparing a privacy film with a micro-louver structure according to claim 3, characterized in that: A hydraulic pump (402) is installed at the upper end of the stamping fixture (4), and a hydraulic cylinder (403) is installed at the lower end of the hydraulic pump (402). The upper end of the hydraulic cylinder (403) is connected to the stamping fixture (4) by fixing screws. An integrally formed mounting groove (4042) is provided on the upper surface of the lifting frame (404). The lower end of the hydraulic cylinder (403) extends into the mounting groove (4042) and is connected to the lifting frame (404) by fixing screws. The sliding frame (405) is welded to the device bracket (1).

5. The apparatus for preparing a privacy film with a micro-louver structure according to claim 4, characterized in that: The lifting frame (404) is provided with a limit slide rail (4041) on its exterior. A cutting box (4043) is provided at the lower end of the lifting frame (404). The cutting box (4043) is connected to the lifting frame (404) by fixing screws. A cutting blade (4044) is fixedly connected to the lower end face of the cutting box (4043) by a buckle. A heating pressure plate (4045) is provided inside the cutting box (4043). The upper part of the heating pressure plate (4045) is... A second servo motor (4046) is installed on the end face. The second servo motor (4046) is embedded in the interior of the lifting frame (404) and connected to the lifting frame (404) by fixing screws. The lower end of the second servo motor (4046) is connected to a threaded screw, and the threaded screw extends into the interior of the heating plate (4045) and is threadedly connected to the heating plate (4045). Guide rods (4047) are slidably connected to the interior of both sides of the heating plate (4045).

6. The apparatus for preparing a privacy film with a micro-louver structure according to claim 5, characterized in that: Monitoring boxes (5) are installed on both sides of the device bracket (1). The monitoring boxes (5) are connected to the device bracket (1) by fixing screws. Laser range sensors (501) are installed on the lower end face of both monitoring boxes (5). The laser range sensors (501) are used to detect the position of the polyurethane film (202) and the privacy film (301). The laser range sensors (501) are electrically connected to the electrical equipment through the PLC module.

7. The apparatus for preparing a privacy film with a micro-louver structure according to claim 6, characterized in that: A fixing plate is installed between the lower part of the forming frame (6) and the auxiliary support (102). A drive box (601) is installed on both sides of the lower end of the forming frame (6). An electric motor is installed inside the drive box (601), and the motor shaft extends to the outside of the drive box (601) and is rotatably connected to the drive box (601) via bearings. A movable roller (603) is installed above the drive box (601). The movable roller (603) is connected to the drive box (602) at both ends. 1) A first electric cylinder (602) is installed between them. The upper end of the first electric cylinder (602) is rotatably connected to the movable roller (603) through a rotating shaft, and the lower end of the first electric cylinder (602) is fixedly connected to the motor shaft of the electric motor through a side magnetic locking shaft. Limiting rollers (7) are installed on both sides of the upper end of the forming frame (6). A bearing seat (701) is installed on the outer side of the limiting roller (7). The limiting roller (7) is rotatably connected to the forming frame (6) through the bearing seat (701).

8. The apparatus for preparing a privacy film with a micro-louver structure according to claim 7, characterized in that: The feeding box (604) is embedded inside the forming frame (6) and connected to the forming frame (6) by fixing screws. Motor boxes (6042) are installed on both sides of the lower end of the feeding box (604). A rotating shaft (6044) is installed inside the feeding box (604). The movable feeding plate (6041) is movably connected to the feeding box (604) through the rotating shaft (6044). A second electric cylinder (6043) is installed on both sides of the lower end of the movable feeding plate (6041). Both ends of the second electric cylinder (6043) are movably connected to the motor box (6042) and the movable feeding plate (6041) respectively through connecting ears.

9. The apparatus for preparing a privacy film with a micro-louver structure according to claim 8, characterized in that: The lifting mold frame (8) has an integrally formed sliding groove inside. The pressing mold (801) extends into the lifting mold frame (8) and is slidably connected to the lifting mold frame (8) through the sliding groove. A glue tank (8011) is installed on the upper end face of the pressing mold (801). A glue outlet hole (8016) is provided on the lower end face of the glue tank (8011), and a solenoid valve is installed inside the glue outlet hole (8016). Resistance heating tubes (8012) are installed on both sides of the glue tank (8011). An integrally formed louver forming layer (8013) is provided on the lower end face of the pressing mold (801). The inner sides of the mold (801) are provided with sliding holes (8014), and the middle of the inner side of the pressing mold (801) is provided with a threaded hole (8015). An electric screw and a sliding rod are installed on one side of the inner side of the lifting mold frame (8). The electric screw passes through the threaded hole (8015) and is threadedly connected to the pressing mold (801). The sliding rod passes through the sliding hole (8014) and is slidably connected to the pressing mold (801). A third electric cylinder (803) is installed on both sides of the lower side of the lifting mold frame (8). A support plate (802) is installed on one side of the lifting mold frame (8). The support plate (802) passes through the lifting mold frame (8) and is slidably connected to the lifting mold frame (8).

10. A privacy film prepared by the apparatus for preparing a privacy film with a micro-louver structure according to claim 9, characterized in that, include: A polyurethane film (202) and a privacy film (301) are provided, wherein the privacy film (301) is located on the lower end face of the polyurethane film (202), and the upper end of the privacy film (301) is provided with a light-transmitting unit (3011) and a privacy unit (3012) arranged in sequence.

11. A process for preparing a privacy film with a micro-louver structure according to claim 10, characterized in that, Includes the following steps: Step 1: Wrap the two ends of the polyurethane film (202) around the outside of the two first take-up rollers (2), and attach the polyurethane film (202) above the limiting roller (7) and below the movable roller (603), and wrap the two ends of the privacy film (301) around the outside of the two second take-up rollers (3). Step 2: Adjust the first servo motor (302) and the drive motor to drive the second take-up roller (3) and the first take-up roller (2) to rotate, so that the polyurethane film (202) and the privacy film (301) move; Step 3: Monitor the position of the polyurethane film (202) and the privacy film (301) using the laser range sensor (501). When the intersection of the polyurethane film (202) and the privacy film (301) is complete, the second take-up roller (3) and the first take-up roller (2) stop rotating, and the third electric cylinder (803) retracts, driving the lifting mold frame (8) and the pressing mold (801) to press down on the surface of the privacy film (301). The upper surface of the pressing mold (801) and the privacy film (301) is heated by the resistance heating tube (8012), and the upper surface of the privacy film (301) is pressed and formed by the louver forming layer (8013). Step 4: Open the solenoid valve, introduce the adhesive through the glue outlet (8016), and shrink the pressing mold (801) into the lifting mold frame (8) through the electric screw. Drive the threaded screw through the second servo motor (4046) to make the heating platen (4045) press down the polyurethane film (202), so that the surface of the polyurethane film (202) is attached to the surface of the privacy film (301). The upper end of the privacy film (301) forms a light-transmitting unit (3011) and a privacy unit (3012) through UV structure transfer. Step 5: Shrink the heating platen (4045) and extend the hydraulic cylinder (403) to drive the lifting frame (404) down, so that the cutting tool (4044) cuts the polyurethane film (202) and the privacy film (301). The formed privacy base film falls above the movable unloading plate (6041). By adjusting the second electric cylinder (6043), the movable unloading plate (6041) is folded to carry out the unloading work. Step 6: Adjust the first servo motor (302) and drive motor again to drive the second take-up roller (3) and the first take-up roller (2) to rotate and prepare the subsequent privacy film.

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