A mobile phone protective film automatic production line

Abstract

The application relates to a mobile phone protective film automatic production line, and belongs to the technical field of mobile phone accessory processing. The mobile phone protective film automatic production line comprises a rack, a film coating mechanism, a cutting mechanism, a code spraying mechanism and a winding and recycling mechanism. The integrated film coating mechanism, code spraying mechanism, cutting mechanism and winding and recycling mechanism are installed on the rack. A face film, a protective film and a bottom film pass through the film coating mechanism, code spraying mechanism, cutting mechanism and winding and recycling mechanism in sequence. The film coating mechanism press-bonds the face film, protective film and bottom film to form a protective film blank. The cutting mechanism cuts the protective film blank. The code spraying mechanism sprays codes on the protective film. The winding and recycling mechanism recycles the face film and bottom film and winds the protective film. The scheme realizes full-process continuous automatic production from material entering to finished product and waste separation, reduces manual transfer loss, ensures consistency of processing precision of all links through automation cooperation, and improves production efficiency and product quality stability.

Description

Technical Field

[0001] This application relates to the field of mobile phone accessory processing technology, and in particular to an automated production line for mobile phone protective films. Background Technology

[0002] With the widespread use of smartphones, the phone screen, as a core component of human-computer interaction, is easily scratched by daily friction with hard objects such as keys and coins, or cracked due to accidental drops. The core function of a phone screen protector is to protect the screen from such physical damage and reduce wear and tear. Its usage scenarios and environments cover a wide range of high-frequency daily use scenarios, such as commuting, office work, and home, as well as scenarios with special protection needs, such as preventing drops and scratches during outdoor work and sports, and environments where screen performance needs to be avoided, such as low temperature, humidity, and dust. It has become a key accessory product for smartphones.

[0003] Currently, the industry mainly uses three methods for processing protective films: flat die-cutting, laser die-cutting, and rotary die-cutting. However, the edges of protective films processed by these technologies are right angles, which can easily scratch hands when applied. To improve the problem of right angles on the edges of protective films processed by traditional die-cutting, the face film, protective film, and bottom film are stacked into a protective film blank, and then laser beveling technology is used to make the edges of the protective film form an obtuse angled structure. The face film can isolate the upper surface of the protective film from dust and scratches during the processing, while the bottom film can protect the adhesive structure on the lower surface of the protective film.

[0004] Specifically, the face mask, the working layer, and the base film are aligned and stacked one by one by semi-automatic equipment to form a blank. Then, they are manually transferred to laser equipment, where the edges are beveled using laser beveling technology. Finally, the protective film is rolled up by a separate winding machine, and the face mask and base film are recycled.

[0005] However, existing technologies have certain obvious limitations. The stacking operation of the face mask, protective film and base film cannot be linked with the laser cutting equipment in real time. The stacked blanks need to be manually transferred to the cutting station. After the laser beveling is completed, the finished product needs to be manually transferred to the winding mechanism for winding. Each process depends on manual connection. The entire processing process cannot form a continuous, fully automated production process. The long waiting time between processes and the time-consuming manual operation result in a significant limitation on production efficiency. Utility Model Content

[0006] To address the aforementioned issues, this application provides an automated production line for mobile phone protective films.

[0007] This application provides an automated production line for mobile phone screen protectors, employing the following technical solution: It includes a frame, a laminating mechanism, a cutting mechanism, and a winding and recycling mechanism. The laminating mechanism, cutting mechanism, and winding and recycling mechanism are all mounted on the frame. A face film, a protective film, and a back film pass sequentially through the laminating mechanism, the cutting mechanism, the coding mechanism, and the winding and recycling mechanism. The laminating mechanism presses the face film, protective film, and back film together to form a protective film preform. The cutting mechanism cuts the protective film preform. The coding mechanism codes the protective film. The winding and recycling mechanism recycles the face film and back film and winds up the protective film.

[0008] By adopting the above technical solution, the laminating mechanism, cutting mechanism, coding mechanism, and winding and recycling mechanism are integrated into the same frame, realizing continuous, fully automated production of protective film processing from material entry to the separation of finished products and waste. The face film, protective film, and bottom film can directly and synchronously enter the production line. The laminating mechanism automatically completes precise alignment and pressing to form a structurally stable protective film preform. The protective film preform is then transferred to the cutting mechanism to complete the edge cutting of the protective film preform. The finished protective film after cutting, along with the face film and bottom film that need to be recycled during processing, can also be directly transferred to the winding and recycling mechanism in the same production line. This simultaneously realizes the orderly winding of the protective film and the classified recycling of waste face film and bottom film. In the entire processing process, the pressing, cutting, coding, winding, and waste recycling of face film, protective film, and bottom film are all completed continuously on the same equipment, reducing efficiency losses caused by manual material transfer. Furthermore, the automation collaboration ensures the consistency of processing accuracy in each link, realizing continuous automated operation from the initial processing of protective film to finished product collection and waste disposal, improving production efficiency and product quality stability.

[0009] Preferably, the laminating mechanism includes an unwinding assembly and multiple pressing assemblies. The unwinding assembly includes multiple face film unwinding rollers, protective film unwinding rollers, and bottom film unwinding rollers. The protective film unwinding rollers and the bottom film unwinding rollers are disposed at the output end of the frame. The bottom film unwinding roller is disposed at the lower end of the protective film unwinding roller. The multiple face film unwinding rollers are disposed downstream of the protective film unwinding roller. The multiple pressing assemblies are arranged in parallel on the frame and are disposed between the face film unwinding roller, the protective film unwinding roller, and the bottom film unwinding roller.

[0010] By adopting the above technical solution, the protective film unwinding roller at the output end of the frame and the bottom film unwinding roller at the lower end can release the protective film and the bottom film simultaneously. The protective film and the bottom film can directly enter the first set of pressing components to complete the initial precise pressing of the bottom film and the protective film. The multiple face film unwinding rollers set downstream of the protective film unwinding roller can release the face film after the bottom film and the protective film have completed the initial pressing, so that the face film can accurately cover the surface of the already pressed bottom film and protective film composite structure. Then, they enter the second set of pressing components for secondary pressing. By matching the positions of the pressing components and the unwinding rollers, the release, conveying and pressing process of the face film, protective film and bottom film can reduce manual intervention and adjustment, adapt to the automated process, and finally form a protective film blank with firm interlayer bonding, laying the foundation for the precise processing of subsequent cutting processes.

[0011] Preferably, the pressing assembly includes an upper pressure roller, a lower pressure roller, a support frame, and a drive unit. The support frame is fixed to the machine frame, the upper pressure roller is disposed on the lower pressure roller, and the lower pressure roller is rotatably supported on the support frame. Two sets of drive units are provided, and the two sets of drive units are disposed at both ends of the support frame. The upper pressure roller is rotatably disposed on the drive unit, and the drive unit drives the upper pressure roller to slide vertically.

[0012] By adopting the above technical solution, the support frame is fixed to the machine frame, providing a solid bearing foundation for the lower pressure roller. Two sets of drive units are symmetrically arranged at both ends of the support frame, synchronously driving the upper pressure roller to slide in the vertical direction. The distance between the upper and lower pressure rollers can be flexibly adjusted according to the film material of different thicknesses, ensuring that the pressure is applied evenly to the surface of the film material during pressing, ensuring that the multi-layer film material is tightly bonded and does not delaminate, and improving the overall processing stability of the automated production line.

[0013] Preferably, the drive unit includes a bearing housing, a threaded rod, and a handwheel. The two ends of the upper pressure roller are rotatably disposed at the two ends of the bearing housing. The bearing housing is slidably disposed on the support frame. The threaded rod is threadedly connected to the bearing housing and is rotatably disposed on the support frame. The handwheel is coaxially fixed with the threaded rod.

[0014] By adopting the above technical solution, when the handwheel is turned, the threaded rod fixed coaxially with the handwheel will rotate synchronously on the support frame. Since the threaded rod is threadedly connected to the bearing seat and the bearing seat can slide along the support frame, the rotation of the threaded rod will be converted into the vertical displacement of the bearing seat, which in turn drives the upper pressure rollers connected at both ends to move up and down synchronously, so as to realize the flexible adjustment of the distance between the upper and lower pressure rollers.

[0015] Preferably, it also includes a conveying mechanism, which includes a plurality of auxiliary traction rollers and a guide frame. The plurality of auxiliary traction rollers are rotatably mounted on the support frame, and the guide frame is fixed to the output end of the frame.

[0016] By adopting the above technical solution, the guide frame fixed at the output end of the frame can guide the bottom film output from the bottom film unwinding roller in a directional manner, restrict the conveying direction of the bottom film, and ensure that the bottom film can be accurately conveyed to the designated position of the pressing assembly. The auxiliary traction rollers set on the support frame provide stable traction force specifically for the protective film and the face film. They can not only pull the protective film to flow at a uniform speed to the pressing assembly after it is output from the protective film unwinding roller, so that the bottom film can be accurately aligned with the bottom film after it has been calibrated by the guide frame, but also, when the face film is output from the downstream face film unwinding roller, the auxiliary traction rollers can pull the face film to be synchronously conveyed to the second set of pressing assemblies with the composite structure of the bottom film and protective film that has completed the initial pressing.

[0017] Preferably, the cutting mechanism includes a cutting cavity, a laser cutting head, a first guide rail, and two second guide rails. The laser cutting head is slidably disposed on the first guide rail along the length direction of the first guide rail, and the two second guide rails are disposed at both ends of the cutting cavity. The two ends of the first guide rail are slidably disposed on the second guide rail along the length direction of the second guide rail.

[0018] By adopting the above technical solution, the laser cutting head can slide along the length of the first guide rail to adjust the transverse cutting position, and the first guide rail can slide along the second guide rails at both ends of the cutting cavity to adjust the longitudinal cutting position. This allows the laser cutting head to freely adapt to different angle cutting requirements. During the first oblique cut, the laser cutting head can be precisely adjusted to a preset angle through the first and second guide rails to obliquely cut the protective film blank entering the cutting cavity, forming a preliminary bevel at the edge of the protective film blank. Subsequently, the laser cutting head adjusts the angle again based on the flexible adjustment function of the first and second guide rails to perform a second oblique cut on the protective film blank, so that the bevels formed by the two oblique cuts intersect each other, ultimately forming a specific rounded corner or an obtuse angle bevel structure that meets the usage requirements at the edge of the protective film blank. This effectively solves the problem of strong touch and easy scratching of hands when using traditional protective films. At the same time, through the precise sliding control of the first and second guide rails, the consistency of the edge cutting angle and structure of each batch of products is ensured.

[0019] Preferably, the cutting mechanism further includes a first driving member, which is fixedly connected to the laser cutting head.

[0020] By adopting the above technical solution, the first driving component can drive the laser cutting head to move downward in the vertical direction. Combined with the lateral sliding of the laser cutting head along the first guide rail and the longitudinal sliding of the first guide rail along the second guide rail, a three-dimensional adjustment capability in the lateral, longitudinal, and vertical directions is formed. During the first oblique cut, the first driving component pushes the laser cutting head downward to a cutting depth that matches the thickness of the protective film blank. During the second oblique cut, when adjusting the angle, the first driving component can precisely control the downward displacement again according to the change in the edge thickness of the protective film blank, ensuring that the oblique surface of the second cut intersects precisely with the first oblique surface, and finally forming a regular obtuse angle oblique surface structure.

[0021] Preferably, the winding and recycling mechanism includes a face mask winding roller, a protective film winding roller, and a bottom film winding roller, all of which are located at the output end of the frame.

[0022] By adopting the above technical solution, the protective film blanks processed by the cutting mechanism are separated from the face mask, protective film, and base film when they are conveyed to the winding and recycling mechanism. At this time, the face mask winding roller can automatically roll up and recycle the face mask, the base film winding roller can simultaneously roll up and recycle the base film, and the protective film winding roller is specifically designed to neatly wind up the cut protective film. The three types of film materials are processed synchronously at the output end of the same frame through their respective winding rollers. This not only realizes the recycling of the face mask and base film, but also ensures the neatness of the winding of the protective film. At the same time, it forms a continuous automated link with upstream processes such as cutting and coding, improving production efficiency and material utilization.

[0023] Preferably, the coding mechanism is located at the output end of the cutting cavity.

[0024] By adopting the above technical solution, the protective film blank, after being processed by the cutting mechanism, undergoes separation of the face film and protective film during its transport to the winding and recycling mechanism. The separated protective film is then pulled by the protective film winding roller and transported to the coding mechanism, where the coding mechanism automatically prints brand logos, specifications, and other information. Automated transport ensures that each separated protective film is precisely aligned with the coding mechanism, guaranteeing consistent coding positions. Simultaneously, the coded protective film can directly enter the subsequent winding process, significantly improving production efficiency and processing accuracy.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By integrating the laminating mechanism, cutting mechanism, coding mechanism, and winding and recycling mechanism into a single frame, a continuous automated processing flow is constructed. The face film, protective film, and bottom film can directly and synchronously enter the production line. First, the laminating mechanism automatically and precisely aligns and presses them to form a structurally stable protective film preform. The protective film preform is then transferred to the cutting mechanism for edge cutting. After cutting, the face film, bottom film, and finished protective film that need to be recycled are directly transferred to the coding mechanism within the same production line for coding the protective film. They are then further transferred to the winding and recycling mechanism for winding, simultaneously realizing the orderly winding of the finished protective film and the classified recycling of the face film and bottom film. Throughout the process, the pressing, cutting, coding, winding, and waste recycling of the film material are all completed continuously on the same equipment, which reduces the efficiency loss caused by manual material transfer. Ultimately, it realizes continuous, fully automated production from the initial processing of the protective film to the collection of finished products and waste disposal, significantly improving production efficiency and product quality stability. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0027] Figure 2 This is a schematic diagram of the coating mechanism and the conveying mechanism in the embodiments of this application.

[0028] Figure 3 This is a schematic diagram of the pressing assembly, auxiliary traction roller, and baffle structure in the embodiments of this application.

[0029] Figure 4 This is a schematic diagram of the cutting mechanism in the embodiments of this application.

[0030] Figure 5 This is a schematic diagram of the winding and recycling mechanism in an embodiment of this application.

[0031] Figure 6 yes Figure 5 An enlarged diagram of A in the diagram.

[0032] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Sliding groove; 2. Unwinding assembly; 21. Face film unwinding roller; 22. Protective film unwinding roller; 23. Bottom film unwinding roller; 31. Upper pressure roller; 32. Lower pressure roller; 33. Support frame; 34. Drive unit; 341. Bearing seat; 342. Threaded rod; 343. Handwheel; 4. Cutting mechanism; 41. Cutting cavity; 411. Inlet; 42. Laser cutting head; 43. First guide rail; 44. Second guide rail; 45. First driving component; 46. Connecting rod; 47. Sliding seat; 5. 51. Inkjet printer; 52. Second drive unit; 53. Mounting frame; 6. Auxiliary traction roller; 61. Baffle; 7. Guide frame; 71. Outer frame; 72. Guide roller; 73. Limiting plate; 74. First fixing bolt; 75. Fixing rod; 81. Bottom film take-up roller; 82. Protective film take-up roller; 83. Face film take-up roller; 84. First drive motor; 85. Tension roller; 86. Second fixing bolt; 87. Traction roller; 88. Second drive motor; 89. Third drive motor; 810. Sliding block; 9. Connecting roller. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0034] This application discloses an automated production line for mobile phone screen protectors. (Refer to...) Figure 1 The system includes a frame 1, a laminating mechanism, a cutting mechanism 4, a winding and recycling mechanism, and a coding mechanism 5. The laminating mechanism, cutting mechanism 4, winding and recycling mechanism, and coding mechanism 5 are all mounted on the frame 1. The face film, protective film, and bottom film pass through the laminating mechanism, cutting mechanism 4, and coding mechanism 5 in sequence and are then wound and recycled. The laminating mechanism presses the face film, protective film, and bottom film together to form a protective film blank. The cutting mechanism 4 is used to cut the protective film blank. The winding and recycling mechanism is used to recycle the face film and bottom film and wind up the protective film. The coding mechanism 5 is used to print brand logos, specifications, and other information on the cut protective film.

[0035] Furthermore, throughout the entire processing, the pressing, cutting, coding, winding, and waste recycling of the face film, protective film, and base film are all completed on the same equipment in a continuous manner. This reduces the efficiency loss caused by manual material transfer and ensures the consistency of processing precision in each stage through automated collaboration. It truly realizes continuous automated operation from the initial processing of the protective film to the collection of finished products and waste disposal, significantly improving production efficiency and product quality stability.

[0036] Reference Figure 2Specifically, the film coating mechanism includes an unwinding assembly 2 and multiple pressing assemblies. The unwinding assembly 2 includes multiple face film unwinding rollers 21, protective film unwinding rollers 22, and bottom film unwinding rollers 23. The protective film unwinding rollers 22 and bottom film unwinding rollers 23 are located at the output end of the frame 1. The bottom film unwinding rollers 23 are located at the lower end of the protective film unwinding rollers 22. The multiple face film unwinding rollers 21 are located downstream of the protective film unwinding rollers 22. The face film unwinding rollers 21, protective film unwinding rollers 22, and bottom film unwinding rollers 23 are cylindrical structures.

[0037] Furthermore, it also includes a conveying mechanism, which includes several auxiliary traction rollers 6 and two guide frames 7. The several auxiliary traction rollers 6 are rotatably mounted on the support frame 33, and the guide frames 7 are fixed to the output end of the frame 1. Specifically, the guide frames 7 are inclined, with the input end of the guide frames 7 lower than the output end. The output end of the guide frames 7 is fixedly connected to the output end of the frame 1, and the bottom film unwinding roller 23 is mounted at the input end of the guide frames 7.

[0038] Furthermore, the guide frame 7 includes an outer frame 71, several guide rollers 72, two limiting plates 73, a first fixing bolt 74, and a fixing rod 75. The several guide rollers 72 are rotatably supported on the outer frame 71. The two ends of the fixing rod 75 are fixedly connected to the support frame 33, and the fixing rod 75 is disposed between two adjacent guide rollers 72. The two limiting plates 73 are disposed on the multiple guide rollers 72 and can slide along the length direction of the guide rollers 72. The two limiting plates 73 are disposed at both ends of the outer frame 71. The first fixing bolt 74 is threadedly engaged with the limiting plate 73. The first fixing bolt 74 rotates and moves downward to a certain distance to abut against the fixing rod 75, fixing the limiting plate 73 at this position.

[0039] This demonstrates that the two limiting plates 73 can slide along the length of the guide roller 72. The operator can adjust the distance between the two limiting plates 73 according to the different widths of the bottom film. After adjustment, tighten the first fixing bolt 74 so that the bolt moves downward and abuts against the fixing rod 75, thus stably fixing the limiting plate 73 in the target position. When the bottom film passes through the guide frame 7, the two ends of the bottom film can accurately abut against the side walls of the two limiting plates 73. The lateral displacement of the bottom film is restricted by the blocking of the limiting plates 73. The auxiliary traction roller 6, which is rotated on the support frame 33, further provides stable traction for the bottom film conveying, ensuring that the bottom film is always smoothly conveyed to the output end of the frame 1 along the preset path.

[0040] Reference Figure 3Furthermore, the pressing assembly includes an upper pressure roller 31, a lower pressure roller 32, a support frame 33, and a drive unit 34. The drive unit 34 includes a bearing seat 341. The support frame 33 is fixed on the machine frame 1. The lower pressure roller 32 is rotatably supported on the support frame 33. The upper pressure roller 31 is disposed above the lower pressure roller 32. The upper pressure roller 31 and the lower pressure roller 32 are arranged parallel to each other in the vertical direction. There are two bearing seats 341. The two ends of the upper pressure roller 31 are rotatably disposed at the two ends of the bearing seats 341. The bearing seats 341 are slidably disposed on the support frame 33. The drive unit 34 also includes a threaded rod 342 and a handwheel 343. There are two threaded rods 342 and two handwheels 343, which are disposed at the two ends of the upper pressure roller 31. The threaded rod 342 is threadedly connected to the bearing seat 341. The threaded rod 342 is rotatably disposed on the support frame 33. The handwheel 343 is coaxially fixed with the threaded rod 342.

[0041] Furthermore, two auxiliary traction rollers 6 are provided at both ends of the upper pressure roller 31 and the lower pressure roller 32, and each auxiliary traction roller 6 is provided with two baffles 61. The two baffles 61 are slidably arranged along the length direction of each auxiliary traction roller 6, and multiple sets of pressing components are arranged in parallel on the frame 1.

[0042] This explains that when the handwheel 343 is rotated, the threaded rod 342, which is coaxially fixed with the handwheel 343, will rotate synchronously. Since the threaded rod 342 is threadedly connected to the bearing seat 341 and the bearing seat 341 is slidably mounted on the support frame 33, the rotation of the threaded rod 342 can drive the bearing seat 341 to slide vertically along the support frame 33, thereby adjusting the distance between the upper pressure roller 31 and the lower pressure roller 32, ensuring that the three layers of film are pressed tightly without damaging the material. At the same time, the auxiliary traction rollers 6 at both ends of the upper pressure roller 31 and the lower pressure roller 32 can provide stable guidance for the film material conveying, and the two baffles 61 on each auxiliary traction roller 6 can slide along the length of the auxiliary traction roller 6, which can limit the film material after adjusting the distance according to the width of the film material.

[0043] Furthermore, during the specific pressing process, the protective film unwinding roller 22 located at the output end of the frame 1 releases the protective film, which is then pulled by the auxiliary traction roller 6 of the first pressing assembly located at the output end of the frame 1. The baffle 61 limits the protective film, and it is input into the first pressing assembly together with the bottom film guided by the guide frame 7. The initial pressing is completed by the upper pressure roller 31 and the lower pressure roller 32 with the spacing adjusted. After being output from the first pressing assembly, the corresponding face film unwinding roller 21 can be selected to unwind the film according to the process requirements. The face film is pulled by the auxiliary traction roller 6 of the subsequent pressing assembly, and the baffle 61 limits the face film. It enters the subsequent pressing assembly together with the composite structure of the pressed protective film and the bottom film. The final pressing of the three layers of film is completed by the upper pressure roller 31 and the lower pressure roller 32.

[0044] Furthermore, the conveying mechanism also includes a connecting roller 9, which is disposed on the frame 1. The connecting roller 9 and another guide frame 7 are disposed between the film coating mechanism and the cutting mechanism 4. The cutting mechanism 4 includes a cutting cavity 41 with an inlet 411. The other guide frame 7 is fixed to the outer wall of the cutting cavity 41 and disposed on the lower edge of the inlet 411. The connecting roller 9 is disposed upstream of the guide frame 7 and is rotatably supported on the frame 1.

[0045] This explains that the protective film preform, after being laminated in three layers by the coating mechanism, is first pulled and transitioned by the connecting roller 9, which is rotated and supported on the frame 1. The connecting roller 9 provides a stable traction force for the film material through its own rotation. Subsequently, the protective film preform is guided to another guide frame 7 located at the lower edge of the inlet 411 of the cutting cavity 41. The guide frame 7 guides the protective film preform into the inlet 411 of the cutting cavity 41 by docking with the inlet 411 of the cutting cavity 41.

[0046] Reference Figure 4 Furthermore, the cutting mechanism 4 also includes a cutting cavity 41, a laser cutting head 42, a first guide rail 43, and two second guide rails 44. The cutting cavity 41, laser cutting head 42, first driving member 45, first guide rail 43, and two second guide rails 44 are all disposed inside the cutting cavity 41. The laser cutting head 42 is slidably disposed on the first guide rail 43 along the length direction of the first guide rail 43. Specifically, a connecting rod 46 and a sliding seat 47 are provided between the laser cutting head 42 and the first guide rail 43. The sliding seat 47 is slidably disposed on the first guide rail 43. 3. The connecting rod 46 is fixedly connected to the sliding seat 47. The laser cutting head 42 is slidably disposed on the connecting rod 46. Two second guide rails 44 are disposed at both ends of the cutting cavity 41. The two ends of the first guide rail 43 are slidably disposed on the second guide rail 44 along the length direction of the second guide rail 44. In this embodiment, the first driving member 45 is configured as a driving cylinder. The piston rod of the driving cylinder is fixedly connected to the laser cutting head 42. The driving cylinder is fixed on the connecting rod 46. The piston rod of the driving cylinder drives the laser cutting head 42 to move in the vertical direction.

[0047] This explains that the first driving component 45 drives the laser cutting head 42 to precisely move in the vertical direction. Combined with the lateral sliding of the laser cutting head 42 along the first guide rail 43 via the sliding seat 47 and the longitudinal sliding of the first guide rail 43 along the two second guide rails 44, a three-dimensional adjustment covering the lateral, longitudinal and vertical directions is formed. During the first oblique cut, the laser cutting head 42 is adjusted to the preset angle by relying on the lateral and longitudinal sliding. The driving cylinder pushes the laser cutting head 42 to move downward along the connecting rod 46 to the cutting depth that matches the thickness of the protective film blank, thus completing the initial oblique surface processing.

[0048] Furthermore, during the second beveling adjustment, the laser cutting head 42 again changes the cutting orientation by sliding laterally and longitudinally, while the drive cylinder precisely controls the downward displacement according to the thickness change of the protective film blank edge, ensuring that the bevel of the second cut intersects with the first bevel, ultimately forming a specific rounded corner or an obtuse angle bevel structure that meets the usage requirements at the edge of the protective film blank. This effectively solves the problem of strong touch and easy scratching of hands when using traditional protective films. At the same time, through the precise sliding control of the first guide rail 43 and the second guide rail 44, the consistency of the edge cutting angle and structure of each batch of products is ensured.

[0049] Reference Figure 5 Furthermore, the output end of the cutting cavity 41 is also equipped with a pressing assembly. After the protective film blank is cut, it enters the winding and recycling mechanism through the pressing assembly. The winding and recycling mechanism includes a bottom film winding roller 81, a protective film winding roller 82, and a face film winding roller 83. After the pressing assembly enters the winding and recycling mechanism, the face film, protective film, and bottom film are wound up separately by the bottom film winding roller 81, the protective film winding roller 82, and the face film winding roller 83.

[0050] Reference Figure 6 Furthermore, the mask take-up roller 83 is installed on the upper end of the frame 1. A first drive motor 84 is provided at one end of the mask take-up roller 83. The first drive motor 84 is fixedly connected to the frame 1. The output shaft of the first drive motor 84 is coaxially fixed with the mask take-up roller 83. A tension roller 85 is provided at the end of the mask take-up roller 83 near the cutting cavity 41. A sliding groove 11 is provided on the frame 1. The tension roller 85 is slidably disposed in the sliding groove 11. A sliding block 810 is provided at the end of the tension roller 85 near the sliding groove 11. The sliding block 810 is slidably disposed in the sliding groove 11. A second fixing bolt 86 is provided on the sliding block 810. The second fixing bolt 86 is threadedly engaged with the sliding groove 11. The second fixing bolt 86 is rotated to a certain distance and abuts against the side wall of the frame 1, fixing the tension roller 85 in this position.

[0051] This explains that the face mask output from the cutting mechanism 4 first passes through the tension roller 85 located at one end of the face mask take-up roller 83 near the cutting cavity 41. The operator can loosen the second fixing bolt 86 and push the sliding block 810 to slide horizontally along the sliding groove 11, causing the tension roller 85 to move horizontally synchronously. By adjusting the position of the tension roller 85, the tension of the face mask can be flexibly adjusted. After the tension is adjusted to the appropriate state, the second fixing bolt 86 is tightened so that the second fixing bolt 86 rotates to abut against the side wall of the frame 1, thus stabilizing the tension roller 85 in the current position and ensuring that the tension of the face mask remains stable during the subsequent take-up process.

[0052] Meanwhile, the output shaft of the first drive motor 84 is coaxially fixed with the mask take-up roller 83. The rotation of the output shaft of the first drive motor 84 drives the mask take-up roller 83 to rotate synchronously, generating a continuous and stable traction force, which pulls the mask after it has been adjusted by the tension roller 85 to move towards the mask take-up roller 83, thereby realizing the automatic recycling and winding of the mask.

[0053] Furthermore, after the face mask and protective film are separated, the surface of the protective film is exposed, and the coding mechanism 5 is then activated and performs the coding operation. The coding mechanism 5 consists of a coding machine 51, a second drive unit 52, and a mounting frame 53. The mounting frame 53 is fixed on the frame 1. The second drive unit 52 also uses a drive cylinder. The piston rod of the drive cylinder is fixedly connected to the coding machine 51. When the protective film is delivered to the area directly below the coding machine 51, the second drive unit 52 drives the coding machine 51 to move downwards and complete the coding on the surface of the protective film.

[0054] Furthermore, the printed protective film and the base film are conveyed together to the lower end of the frame 1. The base film take-up roller 81 is located at the lower end of the frame 1. A traction roller 87 is located at the end of the base film take-up roller 81 near the cutting mechanism 4. The traction roller 87 rotates and is supported on the frame 1. The protective film and the base film are separated when they pass through the traction roller 87. A second drive motor 88 is located at one end of the base film take-up roller 81. The output shaft of the second drive motor 88 is coaxially fixed with the base film take-up roller 81. After the second drive motor 88 is started, it can drive the base film take-up roller 81 to rotate, thereby pulling the base film to complete the take-up. At the same time, the protective film take-up roller 82 is located at the output end of the frame 1. A third drive motor 89 is located at one end of the protective film take-up roller 82. The output shaft of the third drive motor 89 is coaxially fixed with the protective film take-up roller 82. After starting, the output shaft of the third drive motor 89 can drive the protective film take-up roller 82 to rotate, thereby pulling the protective film separated from the base film to complete the take-up.

[0055] The implementation principle of an automated production line for mobile phone protective films according to an embodiment of this application is as follows: First, the base film is released from the base film unwinding roller 23 located at the input end of the guide frame 7. The operator slides the two limiting plates 73 on the guide frame 7 according to the width of the base film, adjusts the spacing, and then tightens the first fixing bolt 74 to abut against the fixing rod 75. When the base film is conveyed, both ends abut against the limiting plates 73 to limit the base film. At the same time, the auxiliary traction roller 6 on the support frame 33 provides stable traction force for the base film, ensuring that the base film is conveyed to the output end of the frame 1 along the preset path. The protective film is released from the protective film unwinding roller 22 at the output end of the frame 1 and is pulled by the auxiliary traction roller 6 of the first set of pressing components. It enters the first set of pressing components together with the base film. By rotating the handwheel 343, the threaded rod 342 is rotated, causing the threaded bearing seat 341 to slide vertically along the support frame 33. The spacing between the upper pressure roller 31 and the lower pressure roller 32 is adjusted to match the film thickness and complete the initial pressing.

[0056] After the protective film and base film composite structure are output after initial pressing, the corresponding face film unwinding roller 21 is selected according to the process requirements to unwind the film. The face film is pulled by the auxiliary traction roller 6 of the subsequent pressing component and enters the subsequent pressing component together with the composite structure. The upper pressure roller 31 and lower pressure roller 32 with the adjusted spacing complete the final pressing of the three layers of film to form a protective film preform.

[0057] Subsequently, the protective film blank is pulled and transitioned by the connecting roller 9 between the film coating mechanism and the cutting mechanism 4, and then guided into the cutting cavity 41 by the guide frame 7 fixed at the lower end of the inlet 411 of the cutting cavity 41. During cutting, the first driving member 45 drives the laser cutting head 42 to move in the vertical direction. Combined with the lateral sliding of the laser cutting head 42 along the first guide rail 43 by the sliding seat 47 and the longitudinal sliding of the first guide rail 43 along the second guide rail 44, three-dimensional adjustment is achieved. During the first oblique cut, the laser cutting head 42 is adjusted to the preset angle and moved down to the appropriate depth to form a preliminary oblique surface. During the second oblique cut, the angle and displacement are adjusted again so that the two oblique surfaces intersect to form a rounded or obtuse angle oblique surface, which solves the problem of the traditional cutting edge scratching the hand.

[0058] After the protective film blank is cut, it enters the winding and recycling stage. The mask first passes through the tension roller 85 next to the mask winding roller 83. The operator loosens the second fixing bolt 86 and pushes the sliding block 810 to move horizontally along the sliding groove 11 to adjust the position of the tension roller 85 to match the tension of the mask. After fixing, the first drive motor 84 drives the mask winding roller 83 to rotate, pulling the mask to complete the automatic winding. After the mask and protective film are separated, the surface of the protective film is exposed. When it is conveyed to the bottom of the inkjet printer 51, the second drive component 52 of the inkjet printer 5 drives the inkjet printer 51 to move down to complete the printing of brand logos, specifications and other information.

[0059] After inkjet printing, the protective film and the base film are conveyed together to the lower end of the frame 1. They are separated by rotating the traction roller 87 supported on the frame 1. The second drive motor 88 drives the base film take-up roller 81 to rotate, pulling the base film to complete the take-up. The third drive motor 89 drives the protective film take-up roller 82 set at the output end of the frame 1 to rotate, pulling the separated protective film to complete the finished product take-up. Throughout the process, the various mechanisms operate in a continuous manner, which not only ensures the processing accuracy of each link, but also realizes continuous automated production, significantly improving production efficiency and product quality stability.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mobile phone protective film automation production line, characterized in that: The system includes a frame (1), a laminating mechanism, a cutting mechanism (4), a coding mechanism (5), and a winding and recycling mechanism. The laminating mechanism, the cutting mechanism (4), the coding mechanism (5), and the winding and recycling mechanism are all mounted on the frame (1). The face film, the protective film, and the bottom film pass through the laminating mechanism, the cutting mechanism (4), the coding mechanism (5), and the winding and recycling mechanism in sequence. The laminating mechanism presses the face film, the protective film, and the bottom film together to form a protective film blank. The cutting mechanism (4) is used to cut the protective film blank. The coding mechanism (5) is used to code the protective film. The winding and recycling mechanism is used to recycle the face film and the bottom film and to wind up the protective film.

2. The cell phone protection film automated production line of claim 1, wherein: The film coating mechanism includes an unwinding assembly (2) and multiple sets of pressing assemblies. The unwinding assembly (2) includes multiple face film unwinding rollers (21), a protective film unwinding roller (22), and a bottom film unwinding roller (23). The protective film unwinding roller (22) and the bottom film unwinding roller (23) are located at the output end of the frame (1). The bottom film unwinding roller (23) is located at the lower end of the protective film unwinding roller (22). The multiple face film unwinding rollers (21) are located downstream of the protective film unwinding roller (22). The multiple sets of pressing assemblies are arranged in parallel on the frame (1). The multiple pressing assemblies are located between the face film unwinding roller (21), the protective film unwinding roller (22), and the bottom film unwinding roller (23).

3. The cell phone protection film automated production line of claim 2, wherein: The pressing assembly includes an upper pressure roller (31), a lower pressure roller (32), a support frame (33), and a drive unit (34). The support frame (33) is fixed on the machine frame (1). The upper pressure roller (31) is disposed on the lower pressure roller (32). The lower pressure roller (32) is rotatably supported on the support frame (33). There are two sets of drive units (34). The two sets of drive units (34) are disposed at both ends of the support frame (33). The upper pressure roller (31) is rotatably disposed on the drive unit (34). The drive unit (34) drives the upper pressure roller (31) to slide vertically.

4. The automated production line for mobile phone protective films according to claim 3, characterized in that: The drive unit (34) includes a bearing seat (341), a threaded rod (342), and a handwheel (343). The two ends of the upper pressure roller (31) are rotatably disposed on the two ends of the bearing seat (341). The bearing seat (341) is slidably disposed on the support frame (33). The threaded rod (342) is threadedly connected to the bearing seat (341) and is rotatably disposed on the support frame (33). The handwheel (343) is coaxially fixed with the threaded rod (342).

5. The cell phone protection film automated production line of claim 3, wherein: It also includes a conveying mechanism, which includes a plurality of auxiliary traction rollers (6) and a guide frame (7). The plurality of auxiliary traction rollers (6) are rotatably mounted on the support frame (33), and the guide frame (7) is fixed to the output end of the frame (1).

6. The cell phone protection film automated production line of claim 1, wherein: The cutting mechanism (4) includes a cutting cavity (41), a laser cutting head (42), a first guide rail (43), and a second guide rail (44). The laser cutting head (42), the first guide rail (43), and the second guide rail (44) are all disposed in the cutting cavity (41). The laser cutting head (42) is slidably disposed on the first guide rail (43) along the length direction of the first guide rail (43), and the first guide rail (43) is slidably disposed on the second guide rail (44) along the length direction of the second guide rail (44).

7. The cell phone protection film automated production line of claim 6, wherein: The cutting mechanism (4) further includes a first driving member (45), which is disposed in the cutting cavity (41) and is fixedly connected to the laser cutting head (42).

8. The cell phone protection film automated production line of claim 1, wherein: The winding and recycling mechanism includes a face mask winding roller (83), a protective film winding roller (82), and a bottom film winding roller (81). The face mask winding roller (83), the protective film winding roller (82), and the bottom film winding roller (81) are all located at the output end of the frame (1).

9. The cell phone protection film automated production line of claim 6, wherein: The coding mechanism (5) is located at the output end of the cutting cavity (41).

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