A mobile phone film pasting device and a film pasting method

Abstract

The application relates to the technical field of automatic film pasting equipment for consumer electronics, and discloses a mobile phone film pasting device and a film pasting method thereof, which comprise a rack, a main line conveying carrier, a workpiece bearing base, a transfer assembly and a side auxiliary material pasting mechanism. The main line conveying carrier is assembled on the rack, the workpiece bearing base bears the mobile phone and is displaced along the main line conveying carrier, and the transfer assembly receives the workpiece bearing base. The workpiece parking station of the transfer assembly and the execution position of the side auxiliary material pasting mechanism correspond to each other. When the transfer assembly conveys the workpiece bearing base to the parking station, the side auxiliary material pasting mechanism performs an auxiliary material pasting action on the mobile phone in the lateral direction. The application forms a coupling relationship of station alignment and conveying-execution cooperation through the transfer assembly and the side auxiliary material pasting mechanism, improves the cooperation precision of mobile phone transfer and side pasting, and reduces film pasting deviation.

Description

Technical Field

[0001] This invention relates to the field of automated screen protector application equipment for consumer electronics, specifically to a screen protector application device and method for mobile phones. Background Technology

[0002] In the consumer electronics industry, screen protector application for mobile phones is a crucial assembly process. Early on, this was primarily done manually using handheld application jigs. However, manual application was highly dependent on operator skill, resulting in fluctuating yield rates and low production efficiency, making it unsuitable for high-volume assembly line production. Subsequently, the industry developed semi-automated application equipment, where manual loading and unloading were handled by a mechanical system for film application and pressing, improving efficiency to some extent. However, loading and unloading still relied on manual labor, and the coordination between multiple workstations was poor. Later, fully automated application lines emerged, integrating loading, application, and inspection functions, becoming the mainstream development direction in the industry.

[0003] For example, Chinese patent application number CN202111305937.6 discloses an automatic screen protector applicator for mobile phones. This applicator includes a frame, a feeding mechanism, a conveyor system, an applicator mechanism, and a vision inspection mechanism. The workpiece is directly supported by the conveyor system throughout the applicator operation. The main applicator station and the auxiliary applicator station are arranged in series along the workpiece's rotation axis. This prior art has the following drawbacks: the entire applicator operation relies on the conveyor belt / synchronous belt for support; the vibration of the conveyor system is directly transmitted to the workpiece, preventing the workpiece from detaching from the conveyor system during applicator operation, thus failing to eliminate positioning errors and limiting applicator alignment accuracy. Furthermore, the main applicator station and the auxiliary applicator station are arranged in series along the rotation axis, requiring the two applicator mechanisms to occupy the same workpiece conveyor positioning reference at different times. The two processes can only be executed sequentially, not in parallel, thus limiting the overall production cycle. Finally, the material tray feeding system can only operate on a single tray, requiring frequent manual tray changes, which is inefficient. The existing fully automated film-applying equipment suffers from several problems: multi-tray buffer feeding leads to high frequency of manual intervention; the conveyor channel is a fixed, integral structure that cannot be segmented or expanded, and the channel length cannot be flexibly adjusted according to changes in production line processes; the film-applying mechanism lacks a tension buffer structure, making the ultra-thin protective film prone to stretching and breakage during feeding, and causing air bubbles and wrinkles during film application; in summary, existing fully automated film-applying equipment suffers from: conveyor vibration introducing film-applying positioning errors; the main and auxiliary film-applying processes occupying the same positioning reference and requiring sequential operation, resulting in low production cycle time; frequent manual intervention during material changes; poor channel expandability; and low yield rate of ultra-thin film application. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a mobile phone screen protector application device and method, which has the advantages of multi-plate buffer feeding, splicable and expandable flow channels, and controllable tension of ultra-thin film to reduce air bubbles and wrinkles. It solves the problems of existing equipment such as positioning errors caused by conveyor vibration, low cycle time of main and auxiliary application processes, excessive manual intervention for material changes, poor flow channel expandability, and low yield of ultra-thin film application.

[0005] To achieve the aforementioned goals of multi-tray buffered feeding, expandable flow channels, and controllable ultra-thin film tension to reduce bubbles and wrinkles, this invention provides the following technical solution: a mobile phone screen protector applicator, comprising a frame, a main conveyor carrier, and a workpiece bearing base. The main conveyor carrier is assembled on the frame, and the workpiece bearing base carries the mobile phone and moves along the main conveyor carrier. It also includes a transfer component and a side auxiliary material application mechanism. The transfer component receives the workpiece bearing base, and the workpiece stopping position of the transfer component corresponds to the execution position of the side auxiliary material application mechanism. When the transfer component transports the workpiece bearing base to the stopping position, the side auxiliary material application mechanism performs auxiliary material application laterally towards the mobile phone on the workpiece bearing base.

[0006] Preferably, the transfer assembly is provided with a lifting and separating structure, which can lift the workpiece bearing base so that it is separated from the main line conveyor and is provided with a fine-tuning slide for compensating for the position deviation of the incoming material.

[0007] Preferably, the carrier plate of the transfer assembly has an anti-interference cutout groove, which can avoid the visual inspection assembly arranged above the transfer assembly.

[0008] Preferably, the side auxiliary material attaching mechanism is provided with a roll unwinding unit and a vacuum nozzle. The roll unwinding unit can unwind and output a single sheet of auxiliary material, and the vacuum nozzle can pick up the auxiliary material after the backing paper is peeled off.

[0009] Preferably, the side auxiliary material attachment mechanism is further provided with a rotary fine-tuning platform and a double-layer slide. The rotary fine-tuning platform can compensate for the offset and correct the rotation of the auxiliary material relative to the mobile phone. The double-layer slide can be lowered as a whole to drive the auxiliary material to move toward the mobile phone.

[0010] Preferably, the side auxiliary material attaching mechanism is further provided with a bonding head and an elastic pressure member. The bonding head can press the auxiliary material onto the surface of the mobile phone, and the elastic pressure member can apply an elastic pressing force to the bonding head.

[0011] Preferably, the mobile phone screen protector application equipment further includes a main screen protector module, which is fixed to the frame and equipped with an elastic pressure roller. The elastic pressure roller is used to roll and apply the protective film to the mobile phone screen or casing.

[0012] Preferably, the mobile phone screen protector application equipment further includes an loading and unloading tray mechanism and a loading and unloading gantry conveying mechanism. The loading and unloading gantry conveying mechanism is used to transfer the workpiece from the loading and unloading tray mechanism to the main conveyor carrier, and to recover the workpiece after the screen protector application is completed from the main conveyor carrier back to the loading and unloading tray mechanism.

[0013] Preferably, the mobile phone screen protector application equipment further includes an end visual inspection unit for visually inspecting the mobile phones after the screen protector has been applied and distinguishing between good and bad products. The end visual inspection unit is fixed to the end of the main conveyor carrier.

[0014] A method for applying a screen protector to a mobile phone, applied to the aforementioned screen protector application device, includes the following steps: S1. Place the mobile phone on the workpiece bearing base, and the workpiece bearing base is conveyed along the main line to the transfer component; S2. The transfer assembly receives the workpiece bearing base and moves it to the workpiece stopping position to complete the position alignment. S3, The side auxiliary material attaching mechanism attaches auxiliary materials to the side of the mobile phone from the side; S4. After the side attachment is completed, the transfer assembly moves the workpiece support base out of the station.

[0015] Compared with the prior art, the present invention provides a mobile phone screen protector application device and method, which has the following beneficial effects: 1. The mobile phone screen protector application equipment and method, by having the workpiece stopping station of the transfer component correspond to the execution position of the side auxiliary material application mechanism, couples the workpiece conveying and positioning with the side application at the station level, enabling the transfer and application to work together in a coordinated manner, thereby improving the alignment accuracy between the workpiece and the execution mechanism during application and reducing film offset; by lifting and separating the workpiece bearing base through the lifting and separating structure of the transfer component, the workpiece bearing base is lifted and separated from the main conveyor carrier, which can eliminate the positioning error caused by the vibration of the conveyor belt, and by compensating for the cumulative deviation of the incoming material through the fine-tuning slide, thus providing a stable and accurate positioning reference for side application.

[0016] 2. This mobile phone screen protector application equipment and method achieves stable supply and gripping of single auxiliary materials through the roll unwinding unit and vacuum nozzle of the side auxiliary material application mechanism. Combined with a rotary fine-tuning platform and double-layer slide table, it compensates for the offset of the auxiliary material relative to the mobile phone, corrects rotational deviation, and aligns the material downwards, ensuring precise alignment between the auxiliary material and the mobile phone and improving the consistency of the application position. The elastic pressure rollers of the main film application module roll and apply the protective film, eliminating air bubbles while applying the main film. Through the loading and unloading tray mechanism, the loading and unloading gantry conveying mechanism, and the end-of-line vision inspection unit, it enables batch loading, finished product unloading, and automatic inspection, thereby improving the overall operating efficiency and yield. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the main film application module structure of the present invention; Figure 3 This is a schematic diagram of the transfer component structure of the present invention; Figure 4This is a schematic diagram of the side auxiliary material attachment mechanism of the present invention.

[0018] In the diagram: 1. Frame; 2. Main conveyor; 3. Workpiece bearing base; 4. Transfer assembly; 41. Anti-interference perforated groove; 42. Lifting and separating structure; 43. Fine-tuning slide; 5. Side auxiliary material attaching mechanism; 51. Roll unwinding unit; 52. Vacuum nozzle; 53. Rotary fine-tuning platform; 54. Double-layer slide; 55. Bonding pressure head; 56. Elastic pressure component; 6. End vision inspection unit; 7. Main film bonding module; 71. Elastic pressure roller; 8. Loading and unloading tray mechanism; 9. Loading and unloading gantry conveying mechanism. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1As shown, a mobile phone screen protector applicator includes a frame 1, a main conveyor 2, and a workpiece support base 3. The main conveyor 2 is assembled on the frame 1, and the workpiece support base 3 carries the mobile phone and moves along the main conveyor 2. It also includes a transfer assembly 4 and a side auxiliary material application mechanism 5. The transfer assembly 4 receives the workpiece support base 3, and the workpiece stopping position of the transfer assembly 4 corresponds to the execution position of the side auxiliary material application mechanism 5. When the transfer assembly 4 transports the workpiece support base 3 to the stopping position, the side auxiliary material application mechanism 5 performs auxiliary material application laterally towards the mobile phone on the workpiece support base 3. The frame 1 adopts a frame structure of square tube welded and then sheet metal sealed, made of Q235 carbon steel, with a powder-coated anti-rust treatment. The power supply voltage is AC380V, and the rated power is 8.5kW. The bottom of the frame 1 is equipped with adjustable shock-absorbing casters, which can realize the movement and transportation of the entire machine and level the overall level of the equipment, avoiding the risk of mechanism movement jamming caused by uneven ground. The frame 1 serves as the mounting base for all functional modules of the entire machine, supporting all components such as the main conveyor carrier 2, transfer assembly 4, side auxiliary material attaching mechanism 5, and main film attaching module 7. It ensures the stability of the relative mounting reference between each mechanism, preventing misalignment of the film attaching module. The main conveyor carrier 2 adopts a synchronous belt linear conveyor structure with an adjustable conveying speed of 0-400mm / s. High-precision linear guide rails are used for the conveyor, and the carrier supports multi-segment modular splicing and expansion, allowing for adjustments to the conveying length according to production line processes. The main conveyor carrier 2 is responsible for carrying the workpiece bearing base 3 to complete workpiece transfer, enabling continuous transfer of workpieces from the loading station to the film attaching station and inspection station. The workpiece bearing base 3 is made of 6061 aluminum alloy CNC machined with a hard anodized wear-resistant surface treatment. An internal positioning contour groove is provided, matching the outline of the mobile phone, with a positioning repeatability accuracy of ±0.02mm. 3 serves as the direct support fixture for the mobile phone, limiting and positioning its shape to prevent it from shifting or shaking during transport. The transfer assembly 4 acts as a transfer and docking unit at the workstation, receiving the workpiece support base 3 from the main conveyor 2 and precisely transporting the workpiece to its stopping position, ensuring accurate alignment between the workpiece and the side auxiliary material attaching mechanism 5. The transfer assembly 4 and the side auxiliary material attaching mechanism 5 form a transport-attachment action coupling, locking the workpiece during the side auxiliary material attaching process to ensure the positional accuracy of the lateral attaching action. The side auxiliary material attaching mechanism 5 is positioned laterally on the transfer assembly 4, driven by a servo motor with a repeatability accuracy of ±0.015mm. Once the workpiece is in place, the mechanism outputs the attaching action from the side, completing the attaching of the protective auxiliary material to the side of the mobile phone. Unlike traditional axial serial film attaching stations, this lateral arrangement allows for parallel operation of the side auxiliary material attaching process with other station processes, reducing the overall production cycle time.

[0021] like Figure 1 and Figure 3As shown, the transfer assembly 4 is equipped with a lifting and separating structure 42. The lifting and separating structure 42 can lift the workpiece bearing base 3 to detach it from the main conveyor carrier 2 and is equipped with a fine-tuning slide 43 for compensating for material inlet position deviations. The lifting and separating structure 42 uses a servo electric cylinder as the lifting power source, with a lifting stroke of 0-25mm and a lifting repeatability accuracy of ±0.01mm. The function of the lifting and separating structure 42 is to lift the workpiece bearing base 3 as a whole from the synchronous belt of the main conveyor carrier 2 after the workpiece has flowed to the position of the transfer assembly 4, thus cutting off the vibration of the main conveyor carrier 2 from the workpiece. The transmission eliminates positioning errors caused by vibration of the conveyor mechanism, providing a static and stable working benchmark for film application; it avoids defects such as film offset and incomplete pressing caused by conveyor belt vibration; the fine-tuning slide 43 adopts an XY two-axis servo fine-tuning slide 43, with a single-axis adjustment stroke of ±8mm and an adjustment resolution of 0.001mm; the fine-tuning slide 43 receives the incoming material offset data fed back by the vision system, performs offset compensation on the position of the workpiece bearing base 3, compensates for the long-term accumulated conveying position deviation of the main line conveyor 2, corrects the position drift of the incoming workpiece, and further improves the subsequent film application alignment accuracy.

[0022] like Figure 1 and Figure 3 As shown, the carrier plate of the transfer assembly 4 has an anti-interference slot 41, which can avoid the vision inspection component arranged above the transfer assembly 4. The anti-interference slot 41 is a milled through slot with a slot opening size larger than the field of view of the vision camera lens above. The edge of the slot is chamfered and deburred. The camera lens of the vision inspection component above passes through the slot to collect image information of the workpiece and auxiliary materials. The slot avoids physical interference between the carrier plate body and the camera lens and light source. At the same time, the slot can reduce the overall weight of the carrier plate, reduce the motion load of the transfer assembly 4, reduce the power consumption of the servo motor, and allow the camera to directly collect the complete image of the workpiece without being blocked by the carrier plate, ensuring the imaging quality of visual recognition and avoiding missed detection caused by the carrier plate blocking.

[0023] like Figure 1 and Figure 4As shown, the side auxiliary material attaching mechanism 5 is equipped with a roll unwinding unit 51 and a vacuum nozzle 52. The roll unwinding unit 51 can unwind and output single sheets of auxiliary material, and the vacuum nozzle 52 can pick up the auxiliary material after the backing paper is peeled off. The roll unwinding unit 51 includes a servo unwinding motor, a tension buffer swing arm, and a backing paper winding mechanism. The unwinding speed is adjustable from 0-150mm / s and is suitable for various PET protective film auxiliary materials with a thickness of 0.03-0.2mm. The roll unwinding unit 51 achieves stable unwinding of the protective film roll, and the tension buffer swing arm maintains constant roll tension in real time to prevent the ultra-thin auxiliary material from being stretched and deformed. When the folds break, the bottom paper winding mechanism simultaneously peels off the protective film bottom paper and completes the bottom paper recycling, achieving continuous and uninterrupted supply of auxiliary materials and reducing the frequency of manual material changes; the vacuum nozzle 52 adopts a porous silicone vacuum nozzle 52, the silicone material has a Shore hardness of 40-50, and the vacuum negative pressure is adjustable from -0.04 to -0.08MPa; after the bottom paper of the auxiliary material is peeled off, the vacuum nozzle 52 relies on negative pressure to adsorb and grab a single sheet of auxiliary material. The silicone material will not scratch the surface of the protective film, and the porous structure ensures that the thin auxiliary material is adsorbed flat without warping, preventing curling and wrinkling during the gripping of the auxiliary material, and stably completing the picking and transfer of auxiliary materials.

[0024] like Figure 1 and Figure 4 As shown, the side auxiliary material attachment mechanism 5 is also equipped with a rotary fine-tuning platform 53 and a double-layer slide 54. The rotary fine-tuning platform 53 can compensate for the offset and correct the rotation of the auxiliary material relative to the mobile phone. The double-layer slide 54 can be lowered as a whole to move the auxiliary material toward the mobile phone. The rotary fine-tuning platform 53 adopts a servo rotary platform with a rotation adjustment angle range of ±5° and an angle adjustment resolution of 0.001°. It receives image correction data from visual detection, corrects the rotation angle of the grasped auxiliary material, compensates for the cutting angle deviation of the auxiliary material itself and the grasping posture deviation, and eliminates the angular distortion of the auxiliary material. The resulting film misalignment is addressed by the dual-layer slide 54, which employs two servo linear slide modules. The upper slide is responsible for horizontal lateral feeding, while the lower slide is responsible for vertical lifting. The slide guide uses a high-precision ball linear guide. The dual-layer slide 54 can drive the rotary fine-tuning platform 53 and the vacuum nozzle 52 to perform a combined lateral feeding and vertical descent motion, accurately delivering the corrected auxiliary material to the side of the phone to be attached. The dual-layer independent slide structure decouples the horizontal attachment feeding and vertical pressing motion, ensuring that the two directions of motion do not interfere with each other. The motion control logic is simple, and the motion precision is high.

[0025] like Figure 1 and Figure 4As shown, the side auxiliary material attaching mechanism 5 also includes an attaching pressure head 55 and an elastic pressure member 56. The attaching pressure head 55 can press the auxiliary material onto the surface of the mobile phone, and the elastic pressure member 56 can apply an elastic pressing force to the attaching pressure head 55. The attaching pressure head 55 is made of POM wear-resistant material, and the contact surface of the pressure head is polished. The contact surface of the pressure head matches the shape of the side of the mobile phone. The attaching pressure head 55 directly contacts the protective film to complete the pressing operation. The POM material has moderate hardness and will not damage the mobile phone shell and the protective film. The conformal contact surface ensures that the pressure head and the protective film are fully attached. The elastic pressure member 56 uses multiple sets of linear compression springs. The spring force can be adjusted by adjusting the preload of the adjusting bolt. The pressing force adjustment range is 5-50N. The elastic pressure member 56 provides flexible pressing force to the attaching pressure head 55. During the pressing process, it can adapt to the small shape tolerances of the mobile phone shell, avoid rigid pressure that causes wrinkles in the protective film and damage to the mobile phone shell, ensure uniform and stable pressing force, and reduce air bubbles in the film.

[0026] like Figure 1 As shown, the mobile phone screen protector application equipment also includes a main screen protector module 7, which is fixed to the frame 1 and equipped with an elastic pressure roller 71. The elastic pressure roller 71 is used to roll and adhere the protective film to the mobile phone screen or casing. The main screen protector module 7 is driven by a servo drive, and the module integrates a protective film unwinding and peeling mechanism. The module mounting reference is rigidly connected to the frame 1 to ensure the stability of the main screen protector station reference. The core of the elastic pressure roller 71 is made of aluminum alloy, with an outer layer of silicone. The silicone has a Shore hardness of 60. The two ends of the pressure roller are equipped with spring elastic buffer structures, and the rolling pressure is adjustable from 8 to 60 N. After the protective film is pre-applied, the elastic pressure roller 71 rolls the protective film, relying on the elastic deformation of the silicone to uniformly apply the rolling pressure, squeezing out the air bubbles between the protective film and the mobile phone screen or casing, eliminating defects such as air bubbles and wrinkles in the film application, and at the same time, it can adapt to the small flatness tolerance of the mobile phone surface, avoiding damage to the screen by the rigid pressure roller.

[0027] like Figure 1As shown, the mobile phone screen protector application equipment also includes a loading / unloading tray mechanism 8 and a loading / unloading gantry conveying mechanism 9. The loading / unloading gantry conveying mechanism 9 is used to transfer workpieces from the loading / unloading tray mechanism 8 to the main conveyor carrier 2, and to return the finished workpieces from the main conveyor carrier 2 back to the loading / unloading tray mechanism 8. The loading / unloading tray mechanism 8 supports multi-tray stacking and buffering, and can store 8-12 material trays at the same time. The tray is equipped with a lifting motor to automatically change trays, eliminating the need for frequent manual intervention. The tray can store trays of mobile phones to be screen protected and trays of finished products, enabling batch processing of workpieces. The buffer reduces the frequency of manual loading and unloading, making it suitable for long-term automated continuous production. The loading and unloading gantry conveying mechanism 9 adopts a gantry dual-axis servo module and is equipped with a vacuum conveying suction cup, with a handling repeatability positioning accuracy of ±0.03mm. The gantry mechanism spans above the loading and unloading tray mechanism 8 and the main conveyor carrier 2, automatically taking the mobile phone to be processed from the tray and placing it on the workpiece bearing base 3. At the same time, it takes the finished workpiece with film applied from the main conveyor carrier 2 and puts it back into the finished product tray, realizing fully automatic loading and unloading without the need for manual handling of workpieces, reducing the problems of workpiece bumps and contamination caused by manual labor.

[0028] like Figure 1 As shown, the mobile phone screen protector application equipment also includes an end-of-line visual inspection unit 6 for visually inspecting the screen protectors-applied phones and distinguishing between good and defective products. The end-of-line visual inspection unit 6 is fixed to the end of the main conveyor carrier 2. The end-of-line visual inspection unit 6 includes an industrial camera, a ring light source, and an image processing controller. The camera has 12 million pixels and a detection frame rate of 25 frames / s. The camera captures images of the screen protectors-applied phones, and the algorithm identifies defects such as screen protector misalignment, bubbles, curling edges, and wrinkles, automatically distinguishing between good and defective products. After inspection, the equipment can be connected to a subsequent sorting mechanism to separate defective products, realizing automatic inspection of screen protector quality, replacing manual visual inspection, unifying inspection standards, and avoiding manual omissions and misjudgments.

[0029] A method for applying a screen protector to a mobile phone, applied to the aforementioned screen protector application device, includes the following steps: S1. Place the mobile phone on the workpiece bearing base 3, and the workpiece bearing base 3 is transferred to the transfer assembly 4 along the main line conveyor carrier 2. S2, the transfer component 4 receives the workpiece bearing base 3 and moves to the workpiece stopping position to complete the position alignment; S3, Side auxiliary material attaching mechanism 5 attaches auxiliary materials to the side of the mobile phone from the side; S4. After the side attachment is completed, the transfer assembly 4 moves the workpiece bearing base 3 out of the station.

[0030] Working Principle: After power-on, the entire machine completes servo homing, and all mechanisms reset to their initial standby positions. The loading / unloading gantry conveying mechanism 9 removes the mobile phone to be coated from the loading / unloading tray mechanism 8 and places it into the workpiece bearing base 3 on the main conveyor carrier 2. The workpiece bearing base 3 uses contour grooves to position the mobile phone. The main conveyor carrier 2 starts, driving the workpiece bearing base 3 to be conveyed towards the coating station.

[0031] When the workpiece bearing base 3 is conveyed to the position of the transfer component 4, the transfer component 4 receives the workpiece bearing base 3, and the lifting separation structure 42 lifts the workpiece bearing base 3 upward, so that the workpiece bearing base 3 is completely separated from the main line conveyor carrier 2, cutting off the vibration transmission of the conveying mechanism; the upper vision detection component collects the workpiece position image through the anti-interference hollow groove 41 of the transfer component 4 carrier plate, the vision system calculates the workpiece incoming offset, the fine adjustment slide 43 completes the XY direction position compensation and correction according to the offset data, and the transfer component 4 conveys the workpiece to the workpiece stopping position, completing the alignment of the workpiece with the side auxiliary material attachment mechanism 5.

[0032] The side auxiliary material attaching mechanism 5 is activated, the roll unwinding unit 51 unwinds the protective film, the tension buffer swing arm maintains the tension of the roll material and simultaneously completes the peeling of the backing paper; the vacuum suction nozzle 52 opens under negative pressure to grab the single sheet of auxiliary material after the backing paper is peeled off; the rotary fine-tuning platform 53 receives visual correction data to complete the rotation correction of the auxiliary material angle, and the double-layer slide table 54 drives the auxiliary material to move sideways towards the mobile phone; after it is in place, the bonding pressure head 55 presses and attaches the auxiliary material to the side of the mobile phone under the flexible elastic force of the elastic pressure member 56, completing the side auxiliary material attaching operation.

[0033] After the side-attachment process is completed, the transfer assembly 4 moves the workpiece support base 3 out of the workpiece parking position, the lifting separation structure 42 falls back, and the workpiece support base 3 returns to the main conveyor carrier 2. The main conveyor carrier 2 continues to rotate, and the workpiece is transported to the main film-applying module 7. The elastic pressure roller 71 rolls and applies the main protective film to eliminate air bubbles. After all film-applying processes are completed, the workpiece support base 3, carrying the mobile phone, moves to the end of the main conveyor carrier 2. The end vision inspection unit 6 collects images to detect the film-applying quality and identifies good and defective products. Finally, the loading and unloading gantry conveying mechanism 9 retrieves the finished workpiece and places it back into the finished product tray of the loading and unloading tray mechanism 8, completing one complete work cycle.

[0034] In summary, this mobile phone screen protector application equipment and method, by having the workpiece stopping position of the transfer component 4 correspond to the execution position of the side auxiliary material application mechanism 5, couples the workpiece conveying and positioning with the side application at the workpiece level. This enables the transfer and application to work in synergy, thereby improving the alignment accuracy between the workpiece and the execution mechanism during application and reducing film offset. The lifting and separating structure 42 of the transfer component 4 lifts the workpiece bearing base 3 away from the main conveyor carrier 2, eliminating positioning errors caused by conveyor belt vibration. Furthermore, the fine-tuning slide 43 compensates for accumulated material deviations during conveying, thus providing a stable and accurate positioning reference for side application. The side auxiliary material application... The roll unwinding unit 51 and vacuum nozzle 52 of the auxiliary mechanism 5 achieve stable supply and gripping of single auxiliary materials. Together with the rotary fine-tuning platform 53 and double-layer slide table 54, it realizes offset compensation, rotation correction and descent alignment of the auxiliary material relative to the mobile phone position, which can ensure the precise alignment of the auxiliary material and the mobile phone, thereby improving the consistency of the bonding position. The elastic pressure roller 71 of the main film bonding module 7 performs roll pressing and bonding of the protective film, which can eliminate bonding air bubbles while completing the main film bonding. Through the loading and unloading tray mechanism 8, the loading and unloading gantry conveying mechanism 9 and the end vision inspection unit 6, batch loading, finished product unloading and automatic inspection can be realized, thereby improving the overall machine operation efficiency and yield.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] 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 mobile phone screen protector application device, comprising a frame (1), a main conveyor carrier (2), and a workpiece bearing base (3), wherein the main conveyor carrier (2) is assembled on the frame (1), and the workpiece bearing base (3) carries the mobile phone and moves along the main conveyor carrier (2); characterized in that, It also includes a transfer component (4) and a side auxiliary material attaching mechanism (5). The transfer component (4) supports the workpiece bearing base (3). The workpiece stopping position of the transfer component (4) corresponds to the execution position of the side auxiliary material attaching mechanism (5). When the transfer component (4) transports the workpiece bearing base (3) to the stopping position, the side auxiliary material attaching mechanism (5) performs auxiliary material attaching action on the mobile phone on the workpiece bearing base (3) in the lateral direction.

2. The mobile phone screen protector application device according to claim 1, characterized in that: The transfer assembly (4) is provided with a lifting separation structure (42), which can lift the workpiece bearing base (3) so that it is separated from the main line conveyor (2) and is provided with a fine-tuning slide (43) for compensating for the deviation of the conveying material position.

3. The mobile phone screen protector application device according to claim 2, characterized in that: The carrier plate of the transfer assembly (4) is provided with an anti-interference cutout groove (41), which can avoid the visual inspection assembly arranged above the transfer assembly (4).

4. The mobile phone screen protector application device according to claim 1, characterized in that: The side auxiliary material attaching mechanism (5) is provided with a roll unwinding unit (51) and a vacuum nozzle (52). The roll unwinding unit (51) can unwind and output a single sheet of auxiliary material, and the vacuum nozzle (52) can pick up the auxiliary material after the base paper is peeled off.

5. A mobile phone screen protector application device according to claim 4, characterized in that: The side auxiliary material attachment mechanism (5) is also provided with a rotary fine-tuning platform (53) and a double-layer slide (54). The rotary fine-tuning platform (53) can compensate for the offset and correct the rotation of the auxiliary material relative to the mobile phone. The double-layer slide (54) can be lowered as a whole to drive the auxiliary material to move towards the mobile phone.

6. A mobile phone screen protector application device according to claim 5, characterized in that: The side auxiliary material attaching mechanism (5) is also provided with a bonding head (55) and an elastic pressure member (56). The bonding head (55) can press the auxiliary material onto the surface of the mobile phone, and the elastic pressure member (56) can apply an elastic pressing force to the bonding head.

7. A mobile phone screen protector application device according to claim 1, characterized in that: The mobile phone screen protector application equipment also includes a main screen protector module (7), which is fixed to the frame (1) and is equipped with an elastic pressure roller (71). The elastic pressure roller (71) is used to roll and apply the protective film to the mobile phone screen or casing.

8. A mobile phone screen protector application device according to claim 7, characterized in that: The mobile phone screen protector application equipment also includes a loading and unloading tray mechanism (8) and a loading and unloading gantry conveying mechanism (9). The loading and unloading gantry conveying mechanism (9) is used to transfer the workpiece from the loading and unloading tray mechanism (8) to the main conveyor carrier (2) and to recover the workpiece after the screen protector application is completed from the main conveyor carrier (2) back to the loading and unloading tray mechanism (8).

9. A mobile phone screen protector application device according to claim 1, characterized in that: The mobile phone screen protector application equipment also includes an end visual inspection unit (6) for visually inspecting the mobile phones after the screen protector application is completed and distinguishing between good and bad products. The end visual inspection unit (6) is fixed to the end of the main line conveyor (2).

10. A method for applying a screen protector to a mobile phone, applied to the screen protector application device according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Place the mobile phone on the workpiece bearing base, and the workpiece bearing base is conveyed along the main line to the transfer component; S2. The transfer assembly receives the workpiece bearing base and moves it to the workpiece stopping position to complete the position alignment. S3, The side auxiliary material attaching mechanism attaches auxiliary materials to the side of the mobile phone from the side; S4. After the side attachment is completed, the transfer assembly moves the workpiece support base out of the station.

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