A double-roller synchronous regulation and film material pre-stretching linkage gold foil anti-wrinkle film coating device

Abstract

The application relates to the technical field of gold foil processing, and discloses a double-roller synchronous regulation and film material pre-stretching linkage gold foil anti-wrinkle film coating device, which comprises a U-shaped frame, the U-shaped frame is used for bearing load, two connecting plates one are fixedly connected to the middle positions between the inner walls of the U-shaped frame, the connecting plates one are used for substrate conveying support, two connecting plates two are fixedly connected to the top positions between the inner walls of the U-shaped frame, the connecting plates two are used for gold foil conveying support, a connecting plate three is fixedly connected to one side of the U-shaped frame, the connecting plate three is used for support and reinforcement, and a feeding assembly is arranged at the top of the connecting plate three. The gold foil is conveyed between a pre-stretching driving roller and a pre-stretching driven roller, the pre-stretching driven roller is adjusted in advance, flexible pressing is carried out, and meanwhile, an upper air bag coating roller and a lower coating roller are directly driven by independent servo motors three and servo motors two respectively, and the rotating speed of the lower coating roller is used as a reference.

Description

Technical Field

[0001] This invention relates to the field of gold foil processing technology, specifically to a gold foil anti-wrinkle coating device that integrates dual-roller synchronous control with film pre-stretching. Background Technology

[0002] Gold leaf is a thin sheet hammered from gold. Due to its excellent ductility and malleability, one ounce of pure gold can be hammered into a gold leaf with a thickness of one ten-thousandth of a millimeter and an area of ​​16.2 square meters. That is, one gram of gold can be hammered into a pure gold leaf of about 0.5 square meters with a thickness of 0.12 μm.

[0003] Most existing gold foil laminating equipment is modified from ordinary plastic film laminating machines. It mainly uses a single motor drive and gear transmission to drive the upper and lower rollers for conveying, so as to realize the continuous conveying, stacking and laminating of gold foil and substrate.

[0004] However, after long-term operation, existing laminating equipment suffers from increased gear clearance and component wear, resulting in a difference in linear speed between the upper and lower rollers exceeding 1%. This inconsistency in linear speed can cause the gold foil to be excessively stretched between the rollers, leading to breakage, or cause accumulation due to slack conveying, resulting in irreversible wrinkles. In addition, residual internal stress remains in the gold foil during production. Direct lamination can easily cause large-area wrinkling due to stress shrinkage. Although some equipment is equipped with a pre-stretching mechanism, the pre-stretching roller and the laminating roller are independently driven structures, and their speeds cannot be matched in real time. The pre-stretching amount fluctuates greatly, which exacerbates the uneven stretching of the gold foil and significantly increases the risk of breakage. Furthermore, dust and impurities easily adhere to the gold foil and the substrate during conveying, directly affecting the lamination accuracy and the appearance quality of the finished product, resulting in poor overall performance. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a gold foil anti-wrinkle coating device with dual-roller synchronous control and film pre-stretching linkage, which solves the problems of roller speed deviation, gold foil stress wrinkling, poor pre-stretching matching, and dust pollution.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a gold foil anti-wrinkle coating device with dual-roller synchronous control and film pre-stretching linkage, comprising: The U-shaped frame is used to bear the load. Two connecting plates are fixedly connected at the middle position between the inner walls of the U-shaped frame. The connecting plates are used for supporting the conveying of the substrate. Two connecting plates are fixedly connected at the top position between the inner walls of the U-shaped frame. The connecting plates are used for supporting the conveying of the gold foil. A connecting plate is fixedly connected to one side of the U-shaped frame. The connecting plate is used for support and reinforcement. A feeding component is provided on the top of the connecting plate. The feeding component is used for conveying the substrate and the gold foil. A servo motor three is fixedly connected to the top of one side of the connecting plate two on the left. An exhaust pipe is connected through and fixedly to the output end of the servo motor three. A servo motor two is fixedly connected to the bottom of one side of the connecting plate two on the left. A protective shell one is fixedly connected to one side of the connecting plate two on the right. A pre-stretching drive roller is rotatably connected through and to one side of the inner wall of the protective shell one. A lower coating roller is rotatably connected through and to the other side of the inner wall of the protective shell one. A sprocket two is located on the rear side of the inner wall of the protective shell one. A sprocket one is located on the front side of the protective shell one. A chain is provided between sprocket one and sprocket two. Replacement components are provided at one end of both the lower coating roller and the pre-stretching drive roller for replacing the sprockets. An air pump is located at the top of the connecting plate two on the right. A proportional solenoid valve is connected through and fixedly to the input end of the air pump. The other end of the proportional solenoid valve is connected through and fixedly to... A digital pressure gauge is connected to the device. One end of the digital pressure gauge is connected to a connecting pipe, and the other end of the connecting pipe is connected to a rotary joint. The other end of the rotary joint is connected to a conveying pipe. An upper airbag coating roller is installed around the outer ring of the conveying pipe. A solenoid valve is installed at the other end of the conveying pipe, and an exhaust pipe is installed at the other end of the solenoid valve. Tension adjustment components are installed on one side of both the second connecting plate and the first connecting plate. These tension adjustment components are used for tension adjustment during conveying. A dust removal component is installed on one side of the first connecting plate on the left side. This dust removal component is used for dust removal during coating. A support frame is fixedly connected between the two second connecting plates. An electric push rod is fixedly connected to one side of the support frame. A connecting frame is fixedly connected to the output end of the electric push rod. A pre-tensioned driven roller is rotatably connected between the inner walls of the connecting frame.

[0007] Preferably, the dust removal assembly includes a collection box, which is fixedly connected to a connecting plate. Two outer cylinders are fixedly connected to one side of the inner wall of the collection box. Stainless steel barrels are fixedly connected to one side of the inner ring of each of the two outer cylinders. Nylon brushes are rotatably connected to the inner rings of the two stainless steel barrels. A transmission rod is passed through and fixedly connected between the two nylon brushes. An electric push rod is passed through and fixedly connected to one side of the outer wall of the collection box. A scraper is fixedly connected to the output end of the electric push rod. A pull-out box is passed through and slidably connected to one side of the outer wall of the collection box. A support plate is fixedly connected to one side of the connecting plate. A U-shaped tube is passed through and fixedly connected between the two support plates. Air outlet pipes are passed through and fixedly connected to both ends of the U-shaped tube. An ion fan is passed through and fixedly connected to one side of the outer ring of the U-shaped tube.

[0008] Preferably, the replacement component includes two insert rods, which are fixedly connected to the lower film coating roller and the pre-stretching active roller. A second sprocket is slidably connected to the outer ring of one insert rod, and a first sprocket is slidably connected to the outer ring of the other insert rod. Both insert rods are slidably connected to a pressure cap. A threaded rod is threaded through and threaded to one side of the insert rod and the pressure cap. A sliding plate is slidably connected to one side of the outer wall of the protective shell.

[0009] Preferably, the tension adjustment assembly includes a second fixed plate, which is fixedly connected to a second connecting plate and a first connecting plate. An electric push rod is fixedly connected through and to one side of the second fixed plate. The output end of the electric push rod is fixedly connected to the first fixed plate. Two damping spring dampers are provided on one side of the two first fixed plates. A side plate is provided at one end of each of the two damping spring dampers. A conveying roller is rotatably connected between the two side plates. An angle sensor is provided on one side of one side plate. A buoyancy roller is provided at one end of the angle sensor.

[0010] Preferably, the feeding assembly includes two lower mounting plates, each with an upper mounting plate on its top. A gold foil unwinding roller is provided between the upper and lower mounting plates, with a square plug fixedly connected to one end of each roller. A positioning plate is provided on one side of both the upper and lower mounting plates. A winding mechanism is provided between the two connecting plates, and a substrate unwinding mechanism is provided between the connecting plate and the collection box.

[0011] Preferably, the top of the connecting plate 2 on the right is provided with two vision sensors, multiple guide rollers are rotatably connected between the two connecting plates 1, and a heating roller is provided between the two connecting plates 1.

[0012] Preferably, the lower film-coating roller is connected through and fixedly connected to the second output end of the servo motor.

[0013] Preferably, a second protective shell is fixedly connected to one side of the lower mounting plate. Three bevel gears are rotatably connected to the inner wall of the second protective shell. A first servo motor is fixedly connected to one side of the outer wall of the second protective shell. The output end of the first servo motor passes through the second protective shell and is fixedly connected to one side of the bevel gear. A transmission rod passes through and is fixedly connected to one side of the rear bevel gear. A square slot passes through and is fixedly connected to one end of the right bevel gear. A square plug is slidably connected to the inner wall of the square slot.

[0014] Preferably, scrapers are slidably connected to the inner walls of the two outer cylinders, and a connecting rod is fixedly connected between the two scrapers.

[0015] Working Principle: I. Equipment Installation and Feeding Preparation: First, install and feed the material. Place the gold foil unwinding roller above the lower mounting plate, and insert the square plug into the square slot. Then, place the upper mounting plate on the lower mounting plate, place the positioning plate on the side, and secure it with screws (with washers). This allows for installation and disassembly. The same method can be used to install and disassemble the substrate unwinding mechanism and the upper roller of the rewinding mechanism (without inserting the square plug into the square slot). Install the gold foil unwinding roller and the substrate roll, and thread them onto the conveyor path (e.g., ...). Figure 2 ), and check the status of each component of the equipment; II. Start-up Conveying and Tension Adjustment: After the equipment is running, the controller controls the substrate unwinding mechanism to convey the substrate, and the winding mechanism rewinds synchronously. When the servo motor is working, it drives the bevel gear to rotate, thereby driving the gold foil unwinding roller to run and convey the gold foil. When the tension adjustment component is conveying, the gold foil unwinding roller is equipped with a magnetic powder brake (not shown in the figure), and the buoyancy roller is equipped with an angle sensor to detect the position of the buoyancy roller and adjust the torque of the magnetic powder brake to maintain a constant unwinding tension. During this period, when the electric push rod below is working, the position of the buoyancy roller can be adjusted, and the damping spring shock absorber provides buffering. Multiple sets of tension adjustment components set at different positions are used to ensure the stability of the entire conveying process. III. Static Electricity Elimination and Synchronous Dust Removal: During the conveying process, the controller controls the ion fan to work, blowing out from the air outlet to remove static electricity from the substrate and gold foil, thereby removing dust. At the same time, the bevel gear drives the transmission rod to rotate, causing the two nylon brushes to rotate and rub against each other, performing electrostatic adsorption. Then, the dust moves closer to the stainless steel drum and is adsorbed onto the outer cylinder and the inner wall of the stainless steel drum, preventing dust from affecting the coating quality. IV. Substrate Preheating and Gold Foil Pre-stretching Control: During substrate conveying, the substrate transitions from below the heating roller, where it is heated, then to the tension adjustment assembly and guide roller, and finally to the lower coating roller. During gold foil conveying, it first transitions to the tension adjustment assembly, then to the pre-stretching drive roller. During this process, the controller controls servo motor two to rotate the lower coating roller, causing sprockets one and two to rotate, which in turn rotates the pre-stretching drive roller. Sprocket one rotates faster than sprocket two. Simultaneously, the upper electric push rod two adjusts the pre-stretching driven roller up and down, flexibly clamping the gold foil, thus achieving pre-stretching of the gold foil. The pre-stretching process releases residual internal stress generated during production, preventing shrinkage and wrinkling of the gold foil after lamination. The sliding plate (with a sealing strip between the plate and the protective shell) can then be removed. The threaded rod is turned with a tool, and the pressure cap is removed. This allows for the replacement of sprockets one and two. By replacing sprockets one and two, the rotational speed ratio between the pre-stretching drive roller and the lower lamination roller can be adjusted, achieving stepless adjustment of the pre-stretching amount within the range of 0-5%, adapting to gold foils of different thicknesses and materials: 0.08μm gold foil pre-stretching amount 1%-2%, 0.12μm gold foil pre-stretching amount 2%-3%, and composite gold foil pre-stretching amount 3%-5%. V. Flexible Coating Pressing and Cleaning Collection: After the pre-stretched gold foil passes through the tension adjustment component, it transitions to the lower coating roller, where it merges with the substrate. Servo motor three is activated, driving the upper airbag coating roller to rotate. (Servo motor three and servo motor two are equipped with 17-bit absolute encoders (not shown in the diagram), achieving a speed resolution of 0.001 r / min and a response time ≤1 m). Simultaneously, the controller controls the air pump to deliver gas to the upper airbag coating roller via a delivery pipe. The upper airbag coating roller is made of oil-resistant and aging-resistant nitrile rubber, with an adjustable inflation pressure of 0.1~0.5 MPa. The airbag is covered with a 5mm thick silicone layer with a mirror finish, ensuring no adhesion to the gold foil. A proportional solenoid valve and digital pressure gauge monitor and automatically adjust the pressure inside the upper airbag coating roller, pre-setting different pressing pressures based on the gold foil thickness and substrate material for proper pressing. After a period of use, the controller controls the electric push rod two to work, which drives the scraper to slide on the stainless steel bucket, scraping the outer surface of the stainless steel bucket and the inner surface of the outer cylinder, so that it falls into the pull box. Then, pulling the pull box can be used for subsequent collection.

[0016] This invention provides a gold foil anti-wrinkle coating device that integrates dual-roller synchronous control with film pre-stretching. It offers the following advantages: 1. This invention uses a pre-stretch driven roller, a pre-stretch active roller, an upper airbag coating roller, a lower coating roller, sprocket one, and sprocket two to transport gold foil between the pre-stretch active roller and the pre-stretch driven roller. The pre-stretch driven roller is pre-adjusted for flexible pressing. Simultaneously, the upper airbag coating roller and the lower coating roller are directly driven by independent servo motors three and two, respectively. Taking the rotation speed of the lower coating roller as a reference, when the lower coating roller rotates, it drives sprocket one to rotate, which in turn drives sprocket two and the pre-stretch active roller to rotate, forming a linear velocity difference for pre-stretching. Then, the air pump works to deliver gas into the upper airbag coating roller. A proportional solenoid valve and a digital pressure gauge detect and adjust the pressing to improve the conveying effect and reduce wrinkles.

[0017] 2. This invention utilizes a stainless steel bucket, outer cylinder, bevel gear, and scraper. When the servo motor rotates, it drives the bevel gear to rotate, which in turn drives the nylon brush to rotate with the stainless steel bucket, generating friction and electrostatic adsorption. Simultaneously, an ion fan on the other side operates, using an air outlet pipe to remove static electricity from the passing gold foil and substrate, causing dust to approach and adhere to the stainless steel bucket. Subsequently, the controller controls the electric push rod two to move the scraper, scraping off the dust and collecting it in a pull-out box, thus preventing air bubbles during lamination. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the wiring of the present invention; Figure 4 This is a schematic diagram of the buoyancy roller of the present invention; Figure 5 This is a schematic diagram of the upper airbag coating roller of the present invention; Figure 6 This is a cross-sectional view of the upper airbag coating roller of the present invention; Figure 7 This is an exploded view of the protective shell of the present invention; Figure 8 This is a left exploded view of the pressure cap of the present invention; Figure 9 This is a right-side exploded view of the pressure cap of the present invention; Figure 10 This is a schematic diagram of the gold foil unwinding roller of the present invention; Figure 11 This is a cross-sectional view of the stainless steel bucket of the present invention; Figure 12 This is a cross-sectional view of the protective shell of the present invention.

[0019] The components include: 1. U-shaped frame; 2. Connecting plate one; 3. Connecting plate two; 4. Substrate unwinding mechanism; 5. Gold foil unwinding roller; 6. Buoyancy roller; 7. Side plate; 8. Conveying roller; 9. Damping spring vibration damper; 10. Fixing plate one; 11. Fixing plate two; 12. Electric push rod one; 13. Heating roller; 14. Guide roller; 15. Pre-stretch driven roller; 16. Pre-stretch driving roller; 17. Upper airbag coating roller; 18. Slide plate; 19. Lower coating roller; 20. Chain; 21. Sprocket one; 22. Sprocket two; 23. Air pump; 24. Proportional solenoid valve; 25. Digital pressure gauge; 26. Connecting pipe; 27. Angle sensor; 28. Solenoid valve; 29. ​​Exhaust pipe; 30. Protective shell one; 31. Insert rod; 2. Pressure cap; 33. Threaded rod; 34. Rotary joint; 35. Conveying pipe; 36. Support plate; 37. Connecting plate three; 38. U-shaped tube; 39. Ionizing fan; 40. Air outlet pipe; 41. Collection box; 42. Electric push rod two; 43. Nylon brush; 44. Servo motor one; 45. Pull-out box; 46. Winding mechanism; 47. Stainless steel drum; 48. Protective shell two; 49. Bevel gear; 50. Transmission rod; 51. Square slot; 52. Square plug; 53. Servo motor two; 54. Servo motor three; 55. Positioning plate; 56. Lower mounting plate; 57. Outer cylinder; 58. Upper mounting plate; 59. Vision sensor; 60. Scraper; 61. Connecting rod; 62. Support frame; 63. Connecting frame. Detailed Implementation

[0020] The technical solutions in 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] Example: Please see the appendix Figure 1 - Appendix Figure 12 This invention provides a gold foil anti-wrinkle coating device with dual-roller synchronous control and film pre-stretching linkage, comprising: The U-shaped frame 1 is used to bear the load. Two connecting plates 1-2 are fixedly connected at the middle position between the inner walls of the U-shaped frame 1. The connecting plates 1-2 are used for substrate conveying and support. Two connecting plates 2-3 are fixedly connected at the top position between the inner walls of the U-shaped frame 1. The connecting plates 2-3 are used for gold foil conveying and support. A connecting plate 3-37 is fixedly connected to one side of the U-shaped frame 1. The connecting plate 3-37 is used for support and reinforcement. A feeding component is set at the top of the connecting plate 3-37. The feeding component is used for conveying the substrate and gold foil. The tension adjustment component includes a fixed plate 2-11. The fixed plate 2-11 is fixedly connected to the connecting plates 2-3 and 1-2. An electric push rod 1-12 is fixedly connected through and fixed to one side of the fixed plate 2-11. A fixed plate 1-10 is fixedly connected to the output end of the electric push rod 1-12. Two damping spring dampers 9 are set on one side of the two fixed plates 1-10. A side plate 7 is set at one end of each of the two damping spring dampers 9. A conveying roller 8 is rotatably connected between two side plates 7. An angle sensor 27 is set on one side of one side plate 7. A buoyancy roller 6 is set at one end of the angle sensor 27. The feeding assembly includes two lower mounting plates 56. An upper mounting plate 58 is set on the top of each of the two lower mounting plates 56. A gold foil unwinding roller 5 is set between the upper mounting plate 58 and the lower mounting plate 56. A square plug 52 is fixedly connected to one end of the gold foil unwinding roller 5. A positioning plate 55 is set on one side of the upper mounting plate 58 and the lower mounting plate 56. A winding mechanism 46 is set between the two connecting plates 2 3. A substrate unwinding mechanism 4 is set between the connecting plate 3 37 and the collection box 41. Two vision sensors 59 are set on the top of the right connecting plate 2 3. Multiple guide rollers 14 are rotatably connected between the two connecting plates 1 2. A heating roller 13 is set between the two connecting plates 1 2. A lower coating roller 19 is fixedly connected through the output end of the servo motor 2 53.

[0022] The U-shaped frame 1 is constructed from 10mm thick Q235 high-strength carbon steel plates, with a powder-coated surface for rust prevention. It bears the high-speed load of the entire machine, ensuring no resonance occurs during operation. A gold foil unwinding roller 5 is installed between the upper and lower mounting plates, with one end connected via a quick-release square plug 52. At the unwinding drive end, a protective shell 48 is fixedly connected to one side of the lower mounting plate 56. Three interlocking carbon steel bevel gears 49 are rotatably connected inside the protective shell 48, and a servo motor 44 (preferably a Panasonic A6 series high-precision servo motor) is fixedly connected to its outer wall. One end of the right bevel gear 49 has a square slot 51 that slides into the square plug 52. This plug-in structure greatly simplifies the gold foil roll assembly process: the operator only needs to horizontally push the end of the gold foil unwinding roller 5 with the square plug 52 into the slot 51 to achieve power locking and transmission. An electric push rod 12 (using a precision electric cylinder with a thrust of 500N) is also present.

[0023] A servo motor 3 54 is fixedly connected to the top of one side of the left connecting plate 2 3. An exhaust pipe 29 is fixedly connected to the output end of the servo motor 3 54. A servo motor 2 53 is fixedly connected to the bottom of one side of the left connecting plate 2 3. A protective shell 1 30 is fixedly connected to one side of the right connecting plate 2 3. A pre-stretching drive roller 16 is rotatably connected to one side of the inner wall of the protective shell 1 30. A lower film-coating roller 19 is rotatably connected to the other side of the inner wall of the protective shell 1 30. A sprocket 2 22 is provided on the rear side of the inner wall of the protective shell 1 30. A sprocket 21 is provided on the front side of the protective shell 1 30. A chain 20 is installed between sprocket 21 and sprocket 22. Replacement components are installed at one end of both the lower film-coating roller 19 and the pre-stretching drive roller 16 for sprocket replacement. An air pump 23 is installed on the top of the right-side connecting plate 23. A proportional solenoid valve 24 is connected through and fixedly to the input end of the air pump 23. A digital pressure gauge 25 is connected through and fixedly to the other end of the proportional solenoid valve 24. A connecting pipe 26 is connected through and fixedly to the other end of the digital pressure gauge 25. A rotary joint 34 is connected through and fixedly to the other end of the connecting pipe 26. A rotary joint 34 is connected through and fixedly to the other end of the rotary joint 34. A conveying pipe 35 is connected, and an upper airbag film-coating roller 17 is installed around the outer ring of the conveying pipe 35. A solenoid valve 28 is installed through the other end of the conveying pipe 35, and an exhaust pipe 29 is installed through the other end of the solenoid valve 28. Tension adjustment components are installed on one side of both the connecting plate 2 and the connecting plate 3, which are used to adjust the tension during conveying. A dust removal component is installed on one side of the left connecting plate 2, which is used for dust removal during film coating. A support frame 62 is fixedly connected between the two connecting plates 2 and 3. An electric push rod 42 is fixedly connected through one side of the support frame 62. 2. A connecting frame 63 is fixedly connected to the output end. A pre-stretch driven roller 15 is rotatably connected between the inner walls of the connecting frame 63. The replacement component includes two insert rods 31. The insert rods 31 are fixedly connected to the lower film coating roller 19 and the pre-stretch drive roller 16. A sprocket 22 is slidably connected to the outer ring of one insert rod 31, and a sprocket 21 is slidably connected to the outer ring of the other insert rod 31. A pressure cap 32 is slidably connected to the outer ring of both insert rods 31. A threaded rod 33 is threaded through and threaded to one side of both insert rods 31 and pressure cap 32. A sliding plate 18 is slidably connected through and threaded to one side of the outer wall of the protective shell 30.

[0024] During operation, the end of the gold foil unwinding roller 5 is equipped with a magnetic powder brake with a rated torque of 5 N·m. Angle sensor 27 detects the deflection angle of the buoyancy roller 6 in real time (with a detection accuracy of 0.1°) and feeds the signal back to the PLC controller. The controller uses a PID algorithm to dynamically adjust the excitation current of the magnetic powder brake, thereby precisely changing the unwinding torque and controlling the gold foil unwinding tension fluctuation within ±1N. When the system is subjected to impact, the damping spring damper 9 quickly absorbs the instantaneous tension peak, achieving microsecond-level buffering. When laminating gold foil of different specifications, the operator can slide open the slide plate 18, unscrew the threaded rod 33 to remove the pressure cap 32, and quickly replace the sprockets 21 and 22 with different numbers of teeth to adjust the mechanical transmission ratio between the pre-stretching drive roller 16 and the lower laminating roller 19, thereby achieving a linear speed difference. According to the settings: the tooth ratio is configured to make the pre-stretch amount 1% to 2% for 0.08μm gold foil; 2% to 3% for 0.12μm gold foil; and 3% to 5% for composite gold foil. Utilizing the speed difference, and with the flexible downward pressure of the pre-stretch driven roller 15 by the electric push rod 2, the gold foil is gently stretched before entering the coating process, completely releasing its internal residual stress and preventing shrinkage and wrinkling after coating. Servo motor 2 53 and motor 3 54 are synchronized by electronic gears through a controller, with a speed resolution of 0.001 r / min and a synchronization response time of ≤1 ms. The upper airbag coating roller 17 is made of oil-resistant and aging-resistant nitrile rubber, and is covered with a 5 mm thick medical-grade silicone layer. The surface of the silicone layer has been polished to a mirror finish (surface roughness Ra≤0.05μm) to ensure that there is no electrostatic adhesion or mechanical scratch when in contact with the gold foil. The airbag is connected to an air pump 23, and the pipeline is equipped with an SMC brand proportional solenoid valve 24 (ITV2050 series) and a digital pressure gauge 25, and the inflation pressure is infinitely adjustable between 0.1 and 0.5 MPa. The system can automatically adjust the pressure inside the airbag according to the thickness and hardness of the substrate, achieving 100% flexible surface pressing and expelling air bubbles.

[0025] The dust removal assembly includes a collection box 41, which is fixedly connected to a connecting plate 2. Two outer cylinders 57 are fixedly connected to one side of the inner wall of the collection box 41. Stainless steel barrels 47 are fixedly connected to one side of the inner ring of each of the two outer cylinders 57. Nylon brushes 43 are rotatably connected to the inner ring of each of the two stainless steel barrels 47. A transmission rod 50 passes through and is fixedly connected between the two nylon brushes 43. An electric push rod 42 passes through and is fixedly connected to one side of the outer wall of the collection box 41. A scraper 60 is fixedly connected to the output end of the electric push rod 42. A pull-out box 45 passes through and is slidably connected to one side of the outer wall of the collection box 41. A support plate 36 is fixedly connected to one side of the connecting plate 37. A U-shaped tube 38 passes through and is fixedly connected between the two support plates 36. Both ends of the U-shaped tube 38 pass through... An air outlet duct 40 is fixedly connected to the outer ring of a U-shaped tube 38, and an ion fan 39 is fixedly connected to one side of the outer ring. A protective shell 48 is fixedly connected to one side of a lower mounting plate 56. Three bevel gears 49 are rotatably connected to the inner wall of the protective shell 48. A servo motor 44 is fixedly connected to one side of the outer wall of the protective shell 48, and the output end of the servo motor 44 passes through the protective shell 48 and is fixedly connected to one side bevel gear 49. A transmission rod 50 is fixedly connected to one side of the rear bevel gear 49. A square slot 51 is fixedly connected to one end of the right bevel gear 49. A square plug 52 is slidably connected to the inner wall of the square slot 51. Scrapers 60 are slidably connected to the inner walls of the two outer cylinders 57. A connecting rod 61 is fixedly connected between the two scrapers 60.

[0026] Inside the outer cylinder 57, a 304 stainless steel bucket 47 is fixed. A 60mm diameter nylon brush 43 is rotatably connected to the bucket via a transmission rod 50. Simultaneously, a bevel gear 49 on the rear side drives the nylon brush 43 to rotate at high speed within the stainless steel bucket 47 via the transmission rod 50. The intense friction between the two generates a high-voltage electrostatic adsorption field. Along the conveying path, a U-shaped pipe 38 and an air outlet pipe 40 are fixed to the support plate 36. An ion fan 39 (with an ion balance within ±10V) is equipped on the outside of the pipes. During operation, the ion fan 39 blows out a large amount of positive and negative ions, first neutralizing the static electricity on the gold foil and substrate surface, causing dust to fall off. Then, the electrostatically charged stainless steel bucket 47, like a vacuum cleaner, strongly adsorbs the suspended dust onto the bucket wall. A polyurethane scraper is also slidably connected to the inner wall of the outer cylinder 57. The scraper 60, driven periodically by the electric push rod 42, slides along the surface of the stainless steel bucket 47, scraping off the adsorbed dust and collecting it into the pull-out box 45 at the bottom, ensuring that the lamination environment reaches a local Class 1000 cleanroom state. Two vision sensors 59 (such as Keyence IV2 series smart cameras) are also installed on the top of the connecting plate 3 on the right side to monitor the uniformity of the adhesive coating on the substrate and the flatness of the gold foil surface after lamination in real time. Once bubbles or wrinkles are detected (the detection accuracy can reach 0.05mm²), the system immediately alarms and stops the machine to ensure a high yield of finished products. The heating roller 13 is coated with a Teflon anti-stick layer and has a built-in PTC heating core to preheat the substrate at a constant temperature of 60℃-90℃ before lamination to improve the adhesion of the lamination.

[0027] 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. A gold foil anti-wrinkle coating device with dual-roller synchronous control and film pre-stretching linkage, characterized in that, include: U-shaped frame (1), U-shaped frame (1) is used to bear load. Two connecting plates one (2) are fixedly connected at the middle position between the inner walls of the U-shaped frame (1). Connecting plates one (2) are used for substrate conveying support. Two connecting plates two (3) are fixedly connected at the top position between the inner walls of the U-shaped frame (1). Connecting plates two (3) are used for gold foil conveying support. Connecting plate three (37) is fixedly connected on one side of the U-shaped frame (1). Connecting plate three (37) is used for support and reinforcement. A feeding component is provided on the top of the connecting plate three (37). The feeding component is used for conveying substrate and gold foil. A servo motor three (54) is fixedly connected to the top of one side of the connecting plate two (3) on the left side. An exhaust pipe (29) is fixedly connected to the output end of the servo motor three (54). A servo motor two (53) is fixedly connected to the bottom of one side of the connecting plate two (3) on the left side. A protective shell one (30) is fixedly connected to one side of the connecting plate two (3) on the right side. A pre-stretching active roller (16) is rotatably connected to one side of the inner wall of the protective shell one (30). A lower film-coating roller (19) is rotatably connected to the other side of the inner wall of the protective shell one (30). A sprocket two (22) is provided on the rear side of the inner wall of the protective shell one (30), and a sprocket one (21) is provided on the front side of the protective shell one (30). A chain (20) is provided between the sprocket one (21) and the sprocket two (22). A replacement component is provided at one end of the lower film coating roller (19) and the pre-stretching drive roller (16). The replacement component is used for replacing the sprocket. An air pump (23) is provided on the top of the connecting plate two (3) on the right side. A proportional solenoid valve (24) is connected through and fixedly connected to the input end of the air pump (23). The other end of the proportional solenoid valve (24) is connected through... A digital pressure gauge (25) is fixedly connected to the other end of the digital pressure gauge (25). A connecting pipe (26) is fixedly connected to the other end of the connecting pipe (26). A rotary joint (34) is fixedly connected to the other end of the rotary joint (34). A conveying pipe (35) is fixedly connected to the other end of the conveying pipe (35). An upper airbag film-coating roller (17) is provided on the outer ring of the conveying pipe (35). A solenoid valve (28) is provided on the other end of the conveying pipe (35). An exhaust pipe (29) is provided on the other end of the solenoid valve (28). The connecting... Tension adjustment components are provided on one side of plate 2 (3) and connecting plate 1 (2). The tension adjustment components are used for tension adjustment during conveying. A dust removal component is provided on one side of the connecting plate 1 (2) on the left. The dust removal component is used for dust removal during film coating. A support frame (62) is fixedly connected between the two connecting plates 2 (3). An electric push rod 2 (42) is fixedly connected through one side of the support frame (62). A connecting frame (63) is fixedly connected to the output end of the electric push rod 2 (42). A pre-stretch driven roller (15) is rotatably connected between the inner walls of the connecting frame (63).

2. The gold foil anti-wrinkle coating device with dual-roller synchronous control and film pre-stretching linkage according to claim 1, characterized in that, The dust removal assembly includes a collection box (41), which is fixedly connected to a connecting plate (2). Two outer cylinders (57) are fixedly connected to one side of the inner wall of the collection box (41). Stainless steel barrels (47) are fixedly connected to one side of the inner ring of each of the two outer cylinders (57). Nylon brushes (43) are rotatably connected to the inner ring of each of the two stainless steel barrels (47). A transmission rod (50) is passed through and fixedly connected between the two nylon brushes (43). An electric drive is passed through and fixedly connected to one side of the outer wall of the collection box (41). The electric push rod 2 (42) is fixedly connected to a scraper (60) at its output end. A pull-out box (45) is slidably connected through one side of the outer wall of the collection box (41). A support plate (36) is fixedly connected to one side of the connecting plate 3 (37). A U-shaped tube (38) is slidably connected between the two support plates (36). An air outlet pipe (40) is slidably connected to both ends of the U-shaped tube (38). An ion fan (39) is slidably connected to one side of the outer ring of the U-shaped tube (38).

3. The gold foil anti-wrinkle coating device with dual-roller synchronous control and film pre-stretching linkage according to claim 1, characterized in that, The replacement assembly includes two insert rods (31), which are fixedly connected to the lower film coating roller (19) and the pre-stretching active roller (16). A sprocket two (22) is slidably connected to the outer ring of one side of the insert rod (31), and a sprocket one (21) is slidably connected to the outer ring of the other side of the insert rod (31). A pressure cap (32) is slidably connected to the outer ring of both insert rods (31). A threaded rod (33) is threaded through and threaded to one side of both the insert rod (31) and the pressure cap (32). A sliding plate (18) is slidably connected to one side of the outer wall of the protective shell one (30).

4. The gold foil anti-wrinkle coating device with dual-roller synchronous control and film pre-stretching linkage according to claim 1, characterized in that, The tension adjustment assembly includes a second fixed plate (11), which is fixedly connected to a second connecting plate (3) and a first connecting plate (2). An electric push rod (12) is fixedly connected through one side of the second fixed plate (11), and a fixed plate (10) is fixedly connected to the output end of the electric push rod (12). Two damping spring dampers (9) are provided on one side of the two fixed plates (10), and a side plate (7) is provided at one end of each of the two damping spring dampers (9). A conveying roller (8) is rotatably connected between the two side plates (7). An angle sensor (27) is provided on one side of one side plate (7), and a buoyancy roller (6) is provided at one end of the angle sensor (27).

5. The gold foil anti-wrinkle coating device with dual-roller synchronous control and film pre-stretching linkage according to claim 1, characterized in that, The feeding assembly includes two lower mounting plates (56), and an upper mounting plate (58) is provided on the top of each of the two lower mounting plates (56). A gold foil unwinding roller (5) is provided between the upper mounting plate (58) and the lower mounting plate (56). A square plug (52) is fixedly connected to one end of the gold foil unwinding roller (5). A positioning plate (55) is provided on one side of both the upper mounting plate (58) and the lower mounting plate (56). A winding mechanism (46) is provided between the two connecting plates (3). A substrate unwinding mechanism (4) is provided between the connecting plate (37) and the collection box (41).

6. The gold foil anti-wrinkle coating device with dual-roller synchronous control and film pre-stretching linkage according to claim 1, characterized in that, Two vision sensors (59) are provided on the top of the connecting plate 2 (3) on the right side. Multiple guide rollers (14) are rotatably connected between the two connecting plates 1 (2). A heating roller (13) is provided between the two connecting plates 1 (2).

7. The gold foil anti-wrinkle coating device with dual-roller synchronous control and film pre-stretching linkage according to claim 1, characterized in that, The output end of the servo motor 2 (53) is connected to the lower film-coating roller (19).

8. The gold foil anti-wrinkle coating device with dual-roller synchronous control and film pre-stretching linkage according to claim 5, characterized in that, A protective shell two (48) is fixedly connected to one side of the lower mounting plate (56). Three bevel gears (49) are rotatably connected to the inner wall of the protective shell two (48). A servo motor one (44) is fixedly connected to one side of the outer wall of the protective shell two (48). The output end of the servo motor one (44) passes through the protective shell two (48) and is fixedly connected to the bevel gear (49) on one side. A transmission rod (50) is passed through and fixedly connected to one side of the bevel gear (49) on the rear side. A square slot (51) is passed through and fixedly connected to one end of the bevel gear (49) on the right side. A square plug (52) is slidably connected to the inner wall of the square slot (51).

9. The gold foil anti-wrinkle coating device with dual-roller synchronous control and film pre-stretching linkage according to claim 2, characterized in that, Scrapers (60) are slidably connected to the inner walls of the two outer cylinders (57), and a connecting rod (61) is fixedly connected between the two scrapers (60).

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