Film attaching apparatus

Abstract

The application provides a film pasting device, and relates to the technical field of film pasting equipment. The unwinding mechanism is used for storing a film roll and releasing the film roll as a film belt for conveying. The film picking mechanism is used for picking the protective film on the film belt conveyed by the unwinding mechanism, and is also used for placing the picked protective film on a plane of a workpiece. The calibration mechanism is used for obtaining information of a pasting surface of the protective film picked by the film picking mechanism and facing the workpiece, so that the film picking mechanism adjusts the pasting surface to be level with the plane of the workpiece. The film pasting mechanism is used for pasting part of the pasting surface of the protective film to the plane and the side surface. The film pasting device has high film pasting precision and is convenient for improving the film pasting quality.

Description

Technical Field

[0001] This application relates to the field of film application equipment technology, and more particularly to a film application device. Background Technology

[0002] During the manufacturing, transportation, and use of electronic structural components, protective films are typically applied to the surface of the components to protect their exterior from scratches, contamination, and other damage. These protective films not only provide protection against these three types of damage but also serve as structural shielding in specific processes.

[0003] However, the film application device in the aforementioned related technologies has poor film application accuracy, resulting in film position deviation. Utility Model Content

[0004] This application provides a battery pack and electrical device to solve the technical problem in the above-mentioned related technologies where the film application device has poor film application accuracy, resulting in film application position displacement.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0006] A first aspect of this application provides a film application device, comprising:

[0007] An unwinding mechanism is used to store the film roll and release the film roll into a film belt for transport.

[0008] The film-picking mechanism is located downstream of the processing path of the film-applying device relative to the unwinding mechanism. The film-picking mechanism is used to pick up the protective film on the film belt conveyed by the unwinding mechanism, and the film-picking mechanism is also used to place the picked-up protective film on a plane of the workpiece.

[0009] A calibration mechanism is disposed downstream of the processing path of the film-applying device relative to the film-picking mechanism. The calibration mechanism is used to obtain information about the adhesive surface of the protective film picked up by the film-picking mechanism that faces the workpiece, so that the film-picking mechanism adjusts the adhesive surface to be flush with the plane of the workpiece.

[0010] A film-applying mechanism is used to apply a portion of the adhesive surface of the protective film to the plane and the side surface;

[0011] The plane and side surface of the workpiece intersect.

[0012] This application provides a film-applying device. An unwinding mechanism provides continuous and stable film tape delivery, ensuring an uninterrupted supply of protective film and laying the foundation for precise subsequent film application. A film-picking mechanism picks up the protective film from the film tape and initially positions it on the workpiece surface, achieving initial contact between the protective film and the workpiece. A calibration mechanism acquires real-time information about the adhesive surface of the protective film and guides the film-picking mechanism to adjust the adhesive surface to be completely flush with the workpiece surface. This is the core step in solving film misalignment and air bubbles, ensuring a smooth and even application of the protective film by eliminating height differences. The film-applying mechanism extends part of the adhesive surface of the protective film to the plane and sides of the workpiece, adapting to the 3D structural features of the workpiece. These mechanisms are arranged sequentially along the processing path: the unwinding mechanism first releases the film tape, the film-picking mechanism picks up and places the protective film downstream, the calibration mechanism follows with position calibration, and the film-applying mechanism finally completes the application to the plane and sides. Each mechanism is interlocked, working together to ensure that the protective film is accurately and air-free applied to the workpiece surface, effectively overcoming the defects of traditional film-applying methods, such as inaccurate positioning and wrinkling in 3D curved structures.

[0013] In one possible implementation, the calibration facility includes:

[0014] A vision camera is used to acquire image data of the adhesive surface picked up by the film-picking mechanism;

[0015] The first control unit is connected to the vision camera for transmission and to the film pickup mechanism for control. The first control unit is used to control the film pickup mechanism to adjust the placement position of the protective film according to the image data so that the adhesive surface is flush with the plane.

[0016] A support is provided for supporting the vision camera and the first control unit.

[0017] In one possible implementation, the calibration apparatus further includes:

[0018] A first moving unit is disposed on the support and is used to drive the vision camera to move closer to or away from the protective film on the film pickup mechanism along a first direction.

[0019] The first limiting unit is electrically connected to the first control unit. The first control unit is used to control the first moving unit to move along the first direction between the first position and the second position by using the position information of the vision camera obtained by the first limiting unit.

[0020] Along the first direction, the first position is closer to the film pickup mechanism than the second position.

[0021] In one possible implementation, the first limiting unit includes:

[0022] A first limiter is disposed on the side of the support near the film pickup mechanism. The first limiter is used to limit the first position of the vision camera in the first direction by sending first position information to the first control unit.

[0023] A second limiter is disposed on the support and is located away from the film pickup mechanism. The second limiter is used to limit the second position of the vision camera in the first direction by sending second position information to the first control unit.

[0024] A third limiter is disposed on the support and positioned close to the first limiter relative to the second limiter. The third limiter is used to define the initial position of the vision camera in the first direction by sending third position information to the first control unit.

[0025] In one possible implementation, the film pickup mechanism includes:

[0026] Pick-up unit, used to pick up the protective film on the film strip;

[0027] An adjustment unit is connected to both the pickup unit and the first control unit. The adjustment unit is used to adjust the placement position of the protective film on the pickup unit under the control of the first control unit.

[0028] In one possible implementation, the picking unit includes:

[0029] A substrate is disposed at the end of the adjustment unit facing the vision camera;

[0030] A suction cup is disposed on the substrate;

[0031] The third moving unit is connected to the suction cup and is used to drive the suction cup to reciprocate between the suction position and the release position relative to the substrate along the second direction.

[0032] When the suction cup moves to the adsorption position, the suction cup is used to adsorb and pick up the protective film on the membrane strip;

[0033] When the suction cup moves to the release position, the suction cup is used to release the protective film.

[0034] In one possible implementation, the adjustment unit includes:

[0035] A tilting component, connected to the picking unit, is used to drive the protective film to rotate so that the adhesive surface of the protective film forms an angle with the plane.

[0036] A rotating component is connected to the tilting component, and the rotating component drives the tilting component to drive the pickup unit and the protective film to rotate around the first rotating axis.

[0037] The first rotation axis is perpendicular to the plane of the workpiece.

[0038] In one possible implementation, the tilting component includes:

[0039] An inclined seat is connected to the pickup unit;

[0040] The telescopic rod has one end rotatably connected to the rotating assembly and the other end rotatably connected to the tilting seat;

[0041] A connecting rod is provided at intervals from the telescopic rod, one end of which is rotatably connected to the rotating assembly, and the other end is rotatably connected to the tilting seat;

[0042] The telescopic rod and the connecting rod work together to rotate the protective film.

[0043] In one possible implementation, the rotating assembly includes a rotary motor and a swing base;

[0044] The swing seat is rotatably connected to the telescopic rod and the connecting rod at one end opposite to the pickup unit;

[0045] The rotary motor is used to drive the swing seat to rotate, thereby causing the tilting assembly and the pickup unit to rotate.

[0046] In one possible implementation, the film pickup mechanism further includes a fourth moving unit;

[0047] The fourth moving unit connects the adjustment unit and the picking unit. The fourth moving unit is used to drive the adjustment unit and the picking unit along a first direction so that the protective film on the film strip is picked up and the protective film is placed on the plane of the workpiece.

[0048] The fourth moving unit is used to drive the adjusting unit and the picking unit to move along the second direction and the third direction, so that the picking unit moves between the unwinding mechanism and the calibration mechanism;

[0049] Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.

[0050] In one possible implementation, the film application device further includes a clamping mechanism disposed downstream of the processing path of the film application device relative to the calibration mechanism;

[0051] The clamping mechanism is used to clamp the workpiece.

[0052] In one possible implementation, the clamping mechanism includes a first drive unit, and a first pressure head and a second pressure head spaced apart.

[0053] The first driving unit is connected to the second pressure head and is used to drive the second pressure head to move toward the first pressure head so that the first pressure head and the second pressure head together clamp the workpiece.

[0054] In one possible implementation, the clamping mechanism further includes a fifth moving unit;

[0055] The fifth moving unit is used to move the workpiece held by the first pressure head and the second pressure head toward the film-applying mechanism.

[0056] In one possible implementation, the film application mechanism includes:

[0057] The first film-applying unit is used to press a portion of the adhesive surface of the protective film onto the plane of the workpiece;

[0058] The second film-applying unit is used to press a portion of the adhesive surface of the protective film onto the transition arc surface between the plane and the side surface of the workpiece;

[0059] The third film-applying unit is used to apply a portion of the protective film to the side of the workpiece.

[0060] In one possible implementation, the first film-applying unit includes a pressure block and a second driving unit;

[0061] The second driving unit is used to drive the pressure block to move toward the plane of the workpiece and press the protective film placed on the plane of the workpiece against the plane.

[0062] In one possible implementation, the second film-applying unit includes:

[0063] The first pressure roller is used to press a portion of the protective film onto a transition arc surface of the workpiece;

[0064] The sixth moving unit is used to drive the first pressure roller to move along a third direction;

[0065] The second pressure roller is arranged at a distance from the first pressure roller along a second direction, and the pressure block is located between the first pressure roller and the second pressure roller. The second pressure roller is used to press a portion of the protective film onto another transition arc surface of the workpiece.

[0066] The seventh moving unit is used to drive the second pressure roller to move along the third direction;

[0067] Wherein, the third direction is perpendicular to the second direction.

[0068] In one possible implementation, the third film-applying unit includes:

[0069] The third pressure roller is used to press part of the protective film against one side of the workpiece;

[0070] The third drive unit is used to drive the third pressure roller to move toward the workpiece along a third direction;

[0071] The fourth pressure roller is spaced apart from the third pressure roller along the third direction, and the fourth pressure roller is used to press a portion of the protective film onto the other side of the workpiece;

[0072] The fourth drive unit is used to drive the fourth pressure roller to move toward the workpiece in a third direction.

[0073] In one possible implementation, the unwinding mechanism includes:

[0074] A film-holding component for storing the film roll;

[0075] A transmission unit is used to release the film roll on the film feeding member into the film belt and transport it toward the film picking mechanism;

[0076] A take-up unit is used to take up the release paper from the film tape after the protective film has been picked up.

[0077] In one possible implementation, the transmission unit includes a support assembly and a transmission assembly;

[0078] The support assembly is disposed between the transmission assembly and the film dispensing member, and the support assembly is used to guide the released film belt to move toward the transmission assembly;

[0079] A transmission assembly is used to drive the film belt to move along a second direction and to transport the film belt with the protective film to the film pickup mechanism.

[0080] In one possible implementation, the support component includes:

[0081] The guide plate is inclined relative to the second direction;

[0082] The first guide roller and the second guide roller are arranged at intervals along the length of the guide plate;

[0083] The first guide roller and the second guide roller apply pressure to the film belt toward the guide plate and guide the film belt toward the transmission assembly;

[0084] A pressure member is disposed between the first guide roller and the second guide roller, and the pressure member is used to apply downward pressure toward the guide plate to the film belt.

[0085] In one possible implementation, the transmission assembly includes:

[0086] A positioning plate is disposed on the side of the guide plate opposite to the film feeding member, and is used to support the film belt to be conveyed in the second direction;

[0087] A conveyor plate is arranged at intervals from the positioning plate along the second direction, and the conveyor plate is used to convey film strips to the film picking mechanism;

[0088] A transmission structure is connected to the conveyor plate, and the transmission structure is used to drive the conveyor plate to move along the second direction.

[0089] In one possible implementation, the transmission structure includes a drive motor, a timing belt, a lead screw, and a nut;

[0090] The nut is fixedly connected to the conveyor plate, the lead screw is threadedly connected to the nut, and the timing belt is sleeved on the drive motor and the lead screw so that the drive motor drives the lead screw to rotate, and drives the nut and the conveyor plate to move along the second direction through the lead screw.

[0091] In one possible implementation, the transmission assembly further includes a linear guide rail;

[0092] The linear guide rail is used to guide the conveyor plate to move along the second direction.

[0093] In one possible implementation, the film receiving unit includes:

[0094] Film receiving parts;

[0095] A drive unit is used to drive the take-up unit to rotate and rewind the picked-up release paper;

[0096] A rolling film assembly for feeding the release paper to the receiving film.

[0097] In one possible implementation, the rolling film assembly includes a first rolling film gear, a second rolling film gear, and a guide rod cylinder;

[0098] The guide rod cylinder is used to drive the second rolling gear to move toward the first rolling gear and mesh with the first rolling gear, so as to deliver the release paper to the take-up member through the first rolling gear and the second rolling gear. Attached Figure Description

[0099] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0100] Figure 1 This is a schematic diagram of the structure of a film-applying device provided in an embodiment of this application;

[0101] Figure 2 This is a schematic diagram of the structure of a calibration mechanism provided in an embodiment of this application;

[0102] Figure 3 This is a schematic diagram of a film pickup mechanism provided in an embodiment of this application;

[0103] Figure 4 This is a schematic diagram of the structure of a picking unit and an adjustment unit provided in an embodiment of this application;

[0104] Figure 5 This is a schematic diagram of the structure of a picking unit and an adjusting unit from another angle, provided in an embodiment of this application.

[0105] Figure 6 This is a schematic diagram of the structure of a clamping mechanism provided in an embodiment of this application;

[0106] Figure 7 This is a schematic diagram of a film-applying mechanism provided in an embodiment of this application;

[0107] Figure 8 A schematic diagram of an unwinding mechanism provided in an embodiment of this application.

[0108] Figure 9 for Figure 8 A schematic diagram of the local structure at point O;

[0109] Figure 10 for Figure 8 A schematic diagram of the local structure at point P;

[0110] Figure 11 for Figure 8 A schematic diagram of the local structure at point Q.

[0111] Explanation of reference numerals in the attached figures:

[0112] 10. Film roll; 20. Film tape; 30. Protective film; 40. Release paper; 50. Workpiece;

[0113] 100. Unwinding mechanism;

[0114] 110. Film feeding unit; 120. Transmission unit; 130. Film taking-up unit;

[0115] 121. Support assembly; 122. Transmission assembly; 131. Film take-up component; 132. Drive component;

[0116] 133. Roller film assembly;

[0117] 1211, Guide plate; 1212, First guide roller; 1213, Second guide roller;

[0118] 1214. Pressing component;

[0119] 1221. Positioning plate; 1222. Conveying plate; 1223. Transmission structure;

[0120] 1224. Linear guide rail; 1225. Sensing element;

[0121] 1331, First rolling film gear; 1332, Second rolling film gear; 1333, Guide rod cylinder;

[0122] 12231. Synchronous belt; 12232. Lead screw;

[0123] 200. Film pickup mechanism;

[0124] 210. Pick-up unit; 220. Adjustment unit; 230. Fourth movement unit;

[0125] 211. Substrate; 212. Suction cup; 213. Third moving unit; 221. Tilt assembly;

[0126] 222. Rotating component; 231. First linear module; 232. Second linear module;

[0127] 233. Third linear module;

[0128] 2211. Inclined seat; 2212. Telescopic rod; 2213. Connecting rod; 2221. Rotary motor;

[0129] 2222, Swinging seat;

[0130] 300. Calibration agency;

[0131] 310. Visual camera; 320. First moving unit; 330. First limiting unit;

[0132] 331. First limit switch; 332. Second limit switch; 333. Third limit switch;

[0133] 400. Film application mechanism;

[0134] 410. First film application unit; 420. Second film application unit; 430. Third film application unit;

[0135] 411. Pressing block; 412. Second drive unit; 421. First pressure roller;

[0136] 422. Sixth moving unit; 423. Second pressure roller; 424. Seventh moving unit;

[0137] 431. Third pressure roller; 432. Third drive unit; 433. Fourth pressure roller;

[0138] 434. Fourth drive unit;

[0139] 500. Clamping mechanism;

[0140] 510. First drive unit; 520. First pressure head; 530. Second pressure head; 540. Fifth moving unit;

[0141] Z, first direction; X, second direction; Y, third direction; M, first rotation axis. Detailed Implementation

[0142] As described in the background section, the film application device in the aforementioned related technologies has poor film application accuracy, resulting in film position deviation.

[0143] The reason for this problem lies in the fact that existing technologies address material waste during release film replacement through the cooperation of a film applicator, applicator frame, and support rod. However, this device can only perform coarse positioning and application. Its working principle relies on pulling the protective film to the workpiece position and then rotating the workpiece to complete the application, which cannot adapt to complex surface shapes. When the workpiece is a product with a 3D curved surface structure, such as an electronic atomizer, headphone case, monitor stand, or headphones, the existing technology has significant shortcomings: due to the transition area where the plane and side surfaces intersect and the curved surface features, it is difficult to achieve precise positioning of the protective film during the application process, resulting in film position deviation; during the curved surface bonding stage, air bubbles and wrinkles are easily generated between the protective film and the product surface, affecting the flatness and aesthetics of the bonding; for products that need to be applied to multiple surfaces simultaneously, the existing technology lacks an effective multi-surface collaborative application mechanism, requiring step-by-step operation and difficulty in maintaining consistency in the application position of each surface, ultimately resulting in unstable application quality. These problems not only reduce the product's appearance quality but may also lead to subsequent defects such as protective film peeling or masking failure, seriously affecting product functionality and user experience.

[0144] To address the aforementioned issues, this application provides a film-applying device. An unwinding mechanism provides continuous and stable film tape delivery, ensuring an uninterrupted supply of protective film and laying the foundation for precise subsequent film application. A film-picking mechanism picks up the protective film from the film tape and initially positions it on the workpiece surface, achieving initial contact between the protective film and the workpiece. A calibration mechanism acquires real-time information about the adhesive surface of the protective film and guides the film-picking mechanism to adjust the adhesive surface to be completely flush with the workpiece surface. This is the core step in resolving film misalignment and air bubbles, ensuring a smooth and even application of the protective film by eliminating height differences. The film-applying mechanism then extends part of the adhesive surface of the protective film to the plane and sides of the workpiece, adapting to the 3D structural features of the workpiece. These mechanisms are sequentially arranged along the processing path: the unwinding mechanism first releases the film tape, the film-picking mechanism picks up and places the protective film downstream, the calibration mechanism follows with position calibration, and the film-applying mechanism finally completes the application to the plane and sides. Each mechanism is interconnected, jointly ensuring that the protective film is accurately and air-free applied to the workpiece surface, effectively overcoming the shortcomings of traditional film-applying methods in 3D curved structures, such as inaccurate positioning and wrinkling.

[0145] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0146] refer to Figure 1 and Figure 2 This application provides a film application device, which may include an unwinding mechanism 100, a film picking mechanism 200, a calibration mechanism 300, and a film application mechanism 400.

[0147] The unwinding mechanism 100 is used to store the film roll 10 and release the film roll 10 into a film belt 20 for transport.

[0148] The unwinding mechanism 100 can be understood as a device for storing and releasing the film roll 10. Its main function is to convert the film roll 10 into a continuous film strip 20 and transport it to subsequent processes. For example, the smooth release of the film roll 10 can be achieved by setting a rotating shaft and tension control components, while the film strip 20 is guided by guide rollers or support plates to ensure that the film strip 20 remains stable during transport.

[0149] The film picking mechanism 200 is located downstream of the unwinding mechanism 100 in the processing path of the film application device. The film picking mechanism 200 is used to pick up the protective film 30 on the film belt 20 conveyed by the unwinding mechanism 100, and the film picking mechanism 200 is also used to place the picked-up protective film 30 on a plane of the workpiece 50.

[0150] The film-picking mechanism 200 can pick up and place the protective film 30 in various ways. For example, it can pick up the protective film 30 using mechanical grippers, vacuum suction cups 212, or other adsorption devices. Specifically, the mechanical grippers can hold the protective film 30 by opening and closing, while the vacuum suction cups 212 pick up the protective film 30 by negative pressure adsorption. In addition, the film-picking mechanism 200 can also move in multiple directions via linear guide rails 1224 or a rotating platform to adapt to the needs of picking up the protective film 30 at different positions.

[0151] The calibration mechanism 300 is located downstream of the film-picking mechanism 200 in the processing path of the film-applying device. The calibration mechanism 300 is used to obtain information about the adhesive surface of the protective film 30 picked up by the film-picking mechanism 200 facing the workpiece 50, so that the film-picking mechanism 200 adjusts the adhesive surface to be flush with the plane of the workpiece 50.

[0152] The calibration mechanism 300 functions to acquire positional information of the adhesive surface of the protective film 30 and guide the film-picking mechanism 200 in making adjustments. For example, the height information of the adhesive surface of the protective film 30 can be acquired using devices such as a laser rangefinder, ultrasonic sensor, or contact probe. Furthermore, the film-picking mechanism 200 can adjust the angle or position based on this information to ensure that the adhesive surface of the protective film 30 is aligned with the plane of the workpiece 50.

[0153] The film-applying mechanism 400 is used to apply a portion of the adhesive surface of the protective film 30 to the flat surface and the side surface. The flat surface and the side surface of the workpiece 50 intersect.

[0154] The film-applying mechanism 400 is used to apply a portion of the adhesive surface of the protective film 30 to the flat surface and side surface of the workpiece 50. For example, the application of the protective film 30 can be achieved through roller pressing, hot pressing, or a pneumatic pressure head. Specifically, roller pressing uses multiple rollers rolling in different directions to gradually adhere the protective film 30 to the surface of the workpiece 50, while hot pressing uses a heating device to make the protective film 30 bond more tightly to the surface of the workpiece 50.

[0155] This application provides a film application device. The unwinding mechanism 100 provides a continuous and stable film belt 20 to ensure an uninterrupted supply of protective film 30, laying the foundation for subsequent precise film application. The film picking mechanism 200 is responsible for picking up the protective film 30 from the film belt 20 and initially positioning it on the plane of the workpiece 50, achieving initial contact between the protective film 30 and the workpiece 50. The calibration mechanism 300 acquires information about the adhesive surface of the protective film 30 in real time and guides the film picking mechanism 200 to adjust the adhesive surface to be completely flush with the plane of the workpiece 50. This is the core step in solving the problems of film misalignment and air bubbles, ensuring a flat and even application of the protective film 30 by eliminating height differences. The film application mechanism 400 extends part of the adhesive surface of the protective film 30 to the plane and side of the workpiece 50, adapting to the 3D structural features of the workpiece 50. These mechanisms are set up sequentially along the processing path: the unwinding mechanism 100 first releases the film belt 20, the film picking mechanism 200 picks up and places the protective film 30 downstream, the calibration mechanism 300 then performs position calibration, and the film applying mechanism 400 finally completes the application of the film to the plane and the side. Each mechanism is interlocked to ensure that the protective film 30 is accurately and bubble-free adhered to the surface of the workpiece 50, effectively overcoming the defects of traditional film applying methods in 3D curved surface structures, such as inaccurate positioning and easy wrinkling.

[0156] refer to Figure 1 and Figure 2 In some embodiments, the calibration mechanism 300 may include a vision camera 310, a first control unit, and a support.

[0157] The vision camera 310 is used to acquire image data of the adhesive surface picked up by the film-picking mechanism 200. The first control unit is connected to the vision camera 310 for transmission and control, and is used to control the film-picking mechanism 200 to adjust the placement position of the protective film 30 based on the image data, so that the adhesive surface is flush with the plane. A support is used to support the vision camera 310 and the first control unit.

[0158] The vision camera 310 refers to a device capable of capturing image data of the adhesive surface of the protective film 30 picked up by the film-picking mechanism 200, which can be implemented using an industrial-grade camera. The image data refers to the surface information of the protective film 30 captured by the camera, which can be a grayscale image, a color image, or a depth image, and its purpose is to provide accurate visual input for subsequent position calibration.

[0159] The first control unit can be understood as a hardware module with data processing and instruction generation capabilities, which can be implemented using an embedded controller or industrial computer. The main function of this control unit is to receive image data transmitted by the vision camera 310 and generate control instructions based on the analysis results, thereby driving the film pickup mechanism 200 to complete the position adjustment and ensure that the bonding surface is strictly flush with the plane of the workpiece 50.

[0160] The support is a structural component used to fix and support the vision camera 310 and the first control unit. It can be implemented using a metal bracket, a composite material frame, or other structural forms with sufficient rigidity. Its purpose is to ensure the stability of the entire calibration process under external interference and to avoid a decrease in image acquisition accuracy due to equipment shaking.

[0161] This technical solution acquires image data of the adhesive surface through a vision camera 310, providing the system with real-time and accurate visual input, enabling the detection of subtle shifts in the protective film 30 during the picking process. This direct capture method based on image data avoids the subjective errors of traditional manual visual calibration.

[0162] The first control unit performs real-time analysis based on the image data transmitted by the vision camera 310, and dynamically controls the film pickup mechanism 200 to adjust the placement position of the protective film 30 according to the analysis results. This mechanism of generating control commands based on image data realizes closed-loop feedback from perception to execution, ensuring that the adhesive surface is strictly flush with the plane of the workpiece 50, and effectively preventing bubbles or wrinkles caused by positional deviation.

[0163] The support provides a stable physical support for the vision camera 310 and the first control unit, ensuring the stability of the entire calibration process under vibration or external interference, avoiding the impact of equipment shaking on image acquisition accuracy, and thus supporting the reliable execution of calibration actions.

[0164] refer to Figure 1 and Figure 2 In some embodiments, the calibration mechanism 300 may further include a first moving unit 320 and a first limiting unit 330.

[0165] The first moving unit 320 is mounted on the support and is used to drive the vision camera 310 along a first direction (e.g., Figure 1 The protective film 30 on the film pickup mechanism 200 moves closer to or further away from the Z-direction.

[0166] The first limiting unit 330 is electrically connected to the first control unit. The first control unit uses the position information of the vision camera 310 obtained by the first limiting unit 330 to control the first moving unit 320 to move between a first position and a second position along a first direction. Along the first direction, the first position is closer to the film pickup mechanism 200 relative to the second position.

[0167] The first moving unit 320 refers to a drive device capable of linear motion, which can be implemented using a screw drive mechanism, a linear motor, or a pneumatic slide. The main purpose of this unit is to provide the vision camera 310 with flexible movement capabilities to adapt to changes in the size of different workpieces 50 or the position of the protective film 30.

[0168] The first limiting unit 330 can be understood as a set of sensor components used to detect and limit the range of motion, which can be implemented by means of photoelectric switches, magnetic switches, or mechanical limiters. The purpose of introducing the first limiting unit 330 is to ensure that the vision camera 310 moves accurately within a preset range and to prevent it from exceeding the safety limit.

[0169] The first moving unit 320 of the scheme is set on the support and drives the vision camera 310 to move along the first direction, so that the camera can automatically adjust the distance between itself and the film picking mechanism 200 according to the actual position of the protective film 30, avoiding imaging blur caused by the size difference of the workpiece 50 or the offset of the film strip 20, thereby providing a clear image basis for subsequent calibration.

[0170] The first limiting unit 330 and the first control unit form a closed-loop control. By acquiring camera position information in real time, the movement range is precisely limited, so that the camera can be stably docked at key positions, eliminating manual adjustment errors and improving response speed.

[0171] The first position is defined close to the film pickup mechanism 200 for high-precision close-range capture of the details of the adhesive surface, and the second position provides a safe buffer distance. This positioning strategy not only ensures the imaging accuracy of the small workpiece 50, but also prevents the camera from colliding with the workpiece 50, significantly enhancing the adaptability of the calibration process.

[0172] refer to Figure 1 and Figure 2 In some embodiments, the first limiting unit 330 may include a first limiter 331, a second limiter 332 and a third limiter 333.

[0173] The first limiter 331 is disposed on the side of the support near the film pickup mechanism 200. The first limiter 331 is used to limit the first position of the vision camera 310 in a first direction by sending first position information to the first control unit.

[0174] The second limiter 332 is disposed on the support and is located away from the film pickup mechanism 200. The second limiter 332 is used to limit the second position of the vision camera 310 in a first direction by sending second position information to the first control unit.

[0175] The third limiter 333 is disposed on the support and is located close to the first limiter 331 relative to the second limiter 332. The third limiter 333 is used to limit the initial position of the vision camera 310 in the first direction by sending third position information to the first control unit.

[0176] The first limiter 331 is a device capable of detecting and feeding back a specific position signal, which can be implemented using a photoelectric sensor, a magnetic switch, or a mechanical contact limit switch. The main purpose of this limiter is to provide the vision camera 310 with a working position constraint close to the protective film 30, ensuring the accuracy of image acquisition.

[0177] The second limit switch 332 is a device for defining a safe retraction position. It can be implemented by a photoelectric encoder, an ultrasonic sensor or a mechanical limit switch. Its purpose is to prevent the vision camera 310 from interfering with the film pickup operation when it is not in operation and to ensure the safety of equipment operation.

[0178] The third limiter 333 is a device for establishing a system reference point. It can be implemented using a high-precision laser rangefinder, inductive proximity switch, or Hall effect sensor. Its purpose is to provide a uniform initial position reference for the vision camera 310, thereby eliminating accumulated errors and improving the stability of the calibration process.

[0179] The first limiter 331 is located on the side of the support near the film pickup mechanism 200. By sending the first position information to the first control unit, it limits the first position of the vision camera 310 in the first direction. This ensures that the camera can accurately move to the working position close to the protective film 30 when high-precision image acquisition is required, avoiding image distortion due to distance deviation, thereby providing a reliable data basis for subsequent surface calibration.

[0180] The second limiter 332 is disposed on the support and is far away from the film pickup mechanism 200 relative to the film pickup mechanism 200. By sending the second position information to the first control unit, it limits the second position of the vision camera 310 in the first direction. This establishes a safe retraction position, prevents the camera from interfering with the film pickup operation when it is not in operation, and provides an endpoint constraint for the movement process, ensuring the safety of equipment operation.

[0181] The third limiter 333 is disposed on the support and is positioned close to the first limiter 331 relative to the second limiter 332, thereby limiting the initial position of the vision camera 310 in the first direction by sending third position information to the first control unit.

[0182] The system reference point is established based on the initial position information fed back by the third limiter 333, ensuring that the camera returns to the unified reference origin each time the device is started or reset. This eliminates accumulated position errors and ensures that the travel control of the first moving unit 320 is always based on precise starting coordinates, thereby improving the repeatability and stability of the entire calibration process. The three limiters work together, and through a closed-loop feedback mechanism of position information, the movement trajectory of the vision camera 310 in the first direction has a clear starting point, working point, and safety point, fundamentally solving the calibration drift problem caused by the lack of initial positioning.

[0183] refer to Figure 3 , Figure 4 and Figure 5 In some embodiments, the film pickup mechanism 200 may include a pickup unit 210 and an adjustment unit 220.

[0184] The pickup unit 210 is used to pick up the protective film 30 on the film strip 20. The adjustment unit 220 is connected to both the pickup unit 210 and the connected first control unit. The adjustment unit 220 is used to adjust the placement position of the protective film 30 on the pickup unit 210 under the control of the first control unit.

[0185] The picking unit 210 is a device capable of picking up the protective film 30 from the film belt 20 and transferring it to the workpiece 50. It can be implemented using mechanical grippers, vacuum suction cups 212, or electromagnetic adsorption devices, with the aim of ensuring that the protective film 30 can be stably picked up and accurately positioned.

[0186] The adjustment unit 220 can be understood as an actuator that fine-tunes the position of the pickup unit 210 by receiving instructions from the first control unit. The adjustment unit 220 can be implemented using a multi-axis motion platform driven by a stepper motor, a rotary mechanism driven by a servo motor, or a pneumatic adjustment mechanism. Its purpose is to achieve dynamic calibration of the position of the protective film 30 to meet the requirements of high-precision film application.

[0187] This technical solution uses the pickup unit 210 to acquire the protective film 30 from the film strip 20, providing basic material support for the film application process and ensuring that the protective film 30 can be stably gripped and transferred to the workpiece 50. The adjustment unit 220 establishes a bidirectional connection with the pickup unit 210 and the first control unit, forming a closed-loop control system, enabling the film pickup mechanism 200 to dynamically adjust the position of the protective film 30 based on the image data acquired by the calibration mechanism 300.

[0188] After analyzing the image of the adhesive surface captured by the vision camera 310, the first control unit generates control commands. The adjustment unit 220 receives the commands and drives the pickup unit 210 to perform fine-tuning of the position, ensuring that the adhesive surface of the protective film 30 is precisely flush with the plane of the workpiece 50.

[0189] The real-time interaction mechanism between the adjustment unit 220 and the first control unit enables automated position calibration, effectively solving the defect that the traditional film pickup mechanism 200 cannot respond to calibration signals, and providing a precise positioning basis for subsequent film application processes.

[0190] refer to Figure 3 , Figure 4 and Figure 5 In some embodiments, the pickup unit 210 may include a substrate 211, a suction cup 212, and a third moving unit 213.

[0191] The substrate 211 is disposed at the end of the adjustment unit 220 facing the vision camera 310, the suction cup 212 is disposed on the substrate 211, and the third moving unit 213 is connected to the suction cup 212 and is used to drive the suction cup 212 relative to the substrate 211 along a second direction (e.g., Figure 3 The suction cup 212 (in the X direction) reciprocates between the adsorption and release positions. When the suction cup 212 moves to the adsorption position, it is used to adsorb and pick up the protective film 30 on the membrane strip 20. When the suction cup 212 moves to the release position, it is used to release the protective film 30.

[0192] The substrate 211 refers to a planar structure that provides stable support, which can be made of metal sheet, composite material sheet, or high-strength plastic sheet. Its purpose is to provide a stable mounting base for the suction cup 212 and the third moving unit 213, ensuring the rigidity of the overall structure of the pickup unit 210. The suction cup 212 is an actuator that uses negative pressure to adsorb objects; it can be a single-cavity suction cup 212, a multi-cavity suction cup 212, or a vacuum suction cup 212, etc., and its purpose is to reliably pick up and release the protective film 30. The third moving unit 213 is a linear motion mechanism, which can be implemented by cylinder drive, lead screw drive, or linear motor, and its purpose is to precisely control the movement stroke of the suction cup 212.

[0193] This solution effectively solves the position control problem during the pickup process of the protective film 30 by designing a dynamically adjustable pickup unit 210 structure. The substrate 211 is fixed to the end of the adjustment unit 220 facing the vision camera 310, so that the protective film 30 can directly enter the vision calibration area after pickup, avoiding additional transfer steps and ensuring seamless connection between the pickup posture and the subsequent calibration process, thereby reducing the cumulative error caused by position change.

[0194] The suction cup 212 is mounted on the substrate 211 and serves as an actuator that directly contacts the protective film 30. Its stable support provides a reliable basis for the adsorption action and prevents the protective film 30 from sliding or deforming at the moment of pickup.

[0195] The third moving unit 213 is connected to the suction cup 212 and drives it to reciprocate between the adsorption position and the release position along the second direction. This directional movement mechanism enables the suction cup 212 to precisely control the picking and releasing stroke.

[0196] When the suction cup 212 moves to the adsorption position, it reliably adsorbs the protective film 30 on the film strip 20, ensuring the integrity and consistency of the pick-up action and preventing wrinkles from forming on the protective film 30 during the detachment of the release paper 40. When the suction cup 212 moves to the release position, it accurately places the protective film 30 on the plane of the workpiece 50. The position switching achieves separation control of pick-up and release, avoiding the possible displacement of the protective film 30 or residual air bubbles that may occur when the suction cup 212 operates in a single position.

[0197] refer to Figure 3 , Figure 4 and Figure 5 In some embodiments, the adjustment unit 220 may include a tilting component 221 and a rotating component 222.

[0198] The tilting assembly 221 is connected to the pickup unit 210. The tilting assembly 221 is used to rotate the protective film 30 so that the adhesive surface of the protective film 30 forms an angle with the plane. The rotating assembly 222 is connected to the tilting assembly 221. The rotating assembly 222 drives the pickup unit 210 and the protective film 30 to rotate around a first rotation axis (e.g., ...). Figure 4 The first axis of rotation is perpendicular to the plane of the workpiece 50.

[0199] The tilting assembly 221 refers to a mechanical structure capable of angle adjustment, which can be achieved through a motor-driven linkage mechanism, a hydraulic cylinder-driven swing arm mechanism, or a stepper motor combined with gear transmission. Its purpose is to ensure, through precise angle control, that the adhesive surface of the protective film 30 forms a controllable angle with the plane of the workpiece 50, thereby adapting to the changing requirements of three-dimensional curved surfaces.

[0200] The rotating component 222 can be understood as a device that rotates around a fixed axis. It can be achieved through technologies such as a servo motor with a reducer, a stepper motor with a synchronous belt 12231, or a direct-drive torque motor. Its purpose is to provide stable rotational power to ensure that the protective film 30 can make omnidirectional attitude adjustments in the horizontal plane.

[0201] This solution directly connects the tilting assembly 221 to the pickup unit 210, enabling the protective film 30 to rotate at an angle. This allows the adhesive surface to form a controllable angle with the plane of the workpiece 50. By fine-tuning the tilt angle of the protective film 30, it ensures that the adhesive surface is initially flush with the plane during the initial contact stage, avoiding localized suspension or forced adhesion caused by angular deviations, thereby reducing the generation of bubbles and wrinkles. The rotating assembly 222 and the tilting assembly 221 form a linked structure. By driving the tilting assembly 221, the pickup unit 210 and the protective film 30 rotate around a first rotation axis, which is strictly perpendicular to the plane of the workpiece 50. This vertical axial rotation mechanism allows the protective film 30 to be adjusted omnidirectionally in the horizontal plane, adapting to the continuous transition surface changes of the workpiece 50 from the plane to the side, ensuring that the protective film 30 extends smoothly without stress concentration.

[0202] By combining the pitch adjustment of the tilting component 221 and the orientation adjustment of the rotation component 222, this scheme constructs a two-dimensional attitude correction system, which enables the protective film 30 to accurately match the three-dimensional geometric features of the workpiece 50 before application, providing a stable foundation for subsequent multi-sided film application operations and significantly improving the automation accuracy and reliability of the film application process.

[0203] refer to Figure 3 , Figure 4 and Figure 5 In some embodiments, the tilting assembly 221 may include a tilting seat 2211, a telescopic rod 2212, and a connecting rod 2213.

[0204] The tilting seat 2211 is connected to the pickup unit 210. One end of the telescopic rod 2212 is rotatably connected to the rotating component 222, and the other end is rotatably connected to the tilting seat 2211. A connecting rod 2213 is spaced apart from the telescopic rod 2212. One end of the connecting rod 2213 is rotatably connected to the rotating component 222, and the other end is rotatably connected to the tilting seat 2211. The telescopic rod 2212 and the connecting rod 2213 together drive the protective film 30 to rotate.

[0205] The tilting seat 2211 is a core component that provides a stable bearing base for the protective film 30. It can be implemented using a support structure made of high-rigidity material to ensure that the position of the protective film 30 does not shift during adjustment. The telescopic rod 2212 can be understood as a driving element capable of generating linear motion. It can achieve telescopic function through various means such as pneumatic, hydraulic, or electric push rods. The purpose of introducing this feature is to directly drive the tilting seat 2211 to produce a change in tilt angle through its telescopic motion.

[0206] Link 2213 refers to the linkage mechanism that is arranged parallel to the telescopic rod 2212. It can be implemented using a rigid metal link. Its purpose is to form a triangular linkage mechanism together with the telescopic rod 2212 to ensure geometric stability during movement.

[0207] The tilting seat 2211 serves as the core support component, directly connected to the pickup unit 210, providing a stable bearing base for the protective film 30 and ensuring that the film's position does not shift during adjustment. One end of the telescopic rod 2212 is rotatably connected to the rotating component 222, and the other end is hinged to the tilting seat 2211. Its telescopic movement directly drives the tilting seat 2211 to change its tilt angle, allowing the tilt adjustment of the protective film 30 to dynamically respond to actual calibration requirements. The connecting rod 2213 is spaced apart from the telescopic rod 2212, with both ends rotatably connected to the rotating component 222 and the tilting seat 2211 respectively. Together with the telescopic rod 2212, it forms a triangular linkage mechanism, enabling the adjustment of the tilt angle of the tilting seat 2211.

[0208] The telescopic rod 2212 and the connecting rod 2213 work together to rotate the protective film 30. The dual-rod linkage mechanism ensures that the protective film 30 maintains a flat state during the tilting process, so that the adhesive surface can accurately form the required angle with the workpiece 50 plane. This effectively solves the problem of inaccurate positioning caused by angle deviation when applying film to 3D curved products, and avoids wrinkles in the film during the adjustment process, providing a precise initial positioning basis for subsequent multi-sided film application processes.

[0209] refer to Figure 3 , Figure 4 and Figure 5 In some embodiments, the rotating assembly 222 may include a rotating motor 2221 and a swing seat 2222, with the swing seat 2222 rotatably connected to one end of the telescopic rod 2212 and the connecting rod 2213 facing away from the pickup unit 210. The rotating motor 2221 is used to drive the swing seat 2222 to rotate, thereby causing the tilting assembly 221 and the pickup unit 210 to rotate.

[0210] The rotary motor 2221 refers to a power device capable of providing precise rotational motion, which can be implemented using stepper motors, servo motors, or other methods. The purpose of introducing the rotary motor 2221 is to ensure the accuracy of the rotation angle and provide reliable driving force for the entire rotation process. The swing seat 2222 can be understood as a key connecting component. Its main function is to smoothly transmit motion between the distal ends of the connecting telescopic rod 2212 and the linking rod 2213 during rotation, avoiding mechanical interference. The design purpose of the swing seat 2222 is to improve the smoothness and accuracy of the rotational motion while adapting to the complex motion requirements of the tilting assembly 221.

[0211] This solution addresses the issue of rotational control precision by specifying the structure of the rotating component 222. The rotary motor 2221 serves as the power source, providing precisely controllable rotational motion and ensuring the accuracy of the rotation angle. The swing seat 2222, as a key connecting component, rotatably connects the distal ends of the telescopic rod 2212 and the connecting rod 2213, enabling smooth motion transmission between them during rotation and avoiding mechanical interference.

[0212] The rotating motor 2221 drives the swing seat 2222 to rotate, which in turn drives the tilting assembly 221 and the pickup unit 210 to rotate as a whole. This achieves synchronous adjustment of the protective film 30, thereby maintaining the precise alignment of the protective film 30 with the plane of the workpiece 50 during the film application process and reducing misalignment and the generation of bubbles.

[0213] Specifically, the use of the rotary motor 2221 replaces the possible manual or imprecise driving method, improving the degree of automation and repeatability; the design of the swing seat 2222 ensures the flexibility of the connection point and adapts to the movement requirements of the tilting assembly 221; the overall rotation mechanism ensures the posture consistency of the protective film 30 on the pickup unit 210, laying the foundation for subsequent calibration and film application steps.

[0214] refer to Figure 3 , Figure 4 and Figure 5 In some embodiments, the film pickup mechanism 200 may further include a fourth moving unit 230. The fourth moving unit 230 connects the adjusting unit 220 and the pickup unit 210. The fourth moving unit 230 is used to drive the adjusting unit 220 and the pickup unit 210 along a first direction to pick up the protective film 30 on the film belt 20 and place the protective film 30 on the plane of the workpiece 50. The fourth moving unit 230 is used to drive the adjusting unit 220 and the pickup unit 210 along a second direction and a third direction (e.g., ...). Figure 3 The pickup unit 210 moves between the unwinding mechanism 100 and the calibration mechanism 300, in the Y direction, so that the first, second, and third directions are perpendicular to each other.

[0215] The fourth moving unit 230 refers to a mechanical structure capable of multi-degree-of-freedom motion, which can be implemented using a linear guide rail 1224 or a lead screw transmission assembly 122. In practical applications, the fourth moving unit 230 is rigidly connected to the adjustment unit 220 and the pickup unit 210 to ensure that the relative position between the pickup unit 210 and the adjustment unit 220 remains fixed during movement, thereby preventing the protective film 30 from shifting due to vibration or inertia.

[0216] In some embodiments, the fourth moving unit 230 may include three linear modules that move in three directions and are interconnected. The three linear modules may be a first linear module 231, a second linear module 232, and a third linear module 233. The first linear module 231 is connected to the third linear module 233 through the second linear module 232, and the third linear module 233 is connected to the adjustment unit 220.

[0217] The first linear module 231 can drive the second linear module 232, the third linear module 233 and the adjustment unit 220 to move along the second direction, the second linear module 232 can drive the third linear module 233 and the adjustment unit 220 to move along the third direction, and the third linear module 233 can drive the adjustment unit 220 to move along the first direction.

[0218] The technical solution connects the adjustment unit 220 and the pickup unit 210 through the fourth moving unit 230. This rigid connection method maintains the relative position of the pickup unit 210 and the adjustment unit 220 during the movement, avoiding the positional shift of the protective film 30 due to vibration or inertia during the transfer, thereby ensuring the stability of the posture of the protective film 30 before calibration.

[0219] The fourth moving unit 230 moves along the first direction to pick up the protective film 30 on the film belt 20 and place the protective film 30 on the plane of the workpiece 50. The vertical movement in the first direction enables the picking unit 210 to accurately descend to the height of the film belt 20 to complete the adsorption and picking, and after picking up, it rises to detach from the film belt 20, and then descends to the plane of the workpiece 50 for placement.

[0220] The fourth moving unit 230 moves along the second and third directions to move the pickup unit 210 between the unwinding mechanism 100 and the calibration mechanism 300. The horizontal movement in the second and third directions enables the pickup unit 210 to freely switch between the pickup position downstream of the unwinding mechanism 100 and the calibration position downstream of the calibration mechanism 300 along the processing path, realizing the automated flow from the pickup of the film belt 20 to the position calibration, eliminating the manual handling link and improving the continuity of the process.

[0221] refer to Figure 1 and Figure 6 In some embodiments, the film application device may further include a clamping mechanism 500 disposed downstream of the processing path of the film application device relative to the calibration mechanism 300, the clamping mechanism 500 being used to clamp the workpiece 50.

[0222] The clamping mechanism 500 is a device that can apply a constraint force to the workpiece 50 to achieve a fixing function. It can be implemented using mechanical clamps, pneumatic grippers, or vacuum adsorption platforms. The position setting of the clamping mechanism 500 is designed based on the processing path logic of the film-applying device. Its purpose is to ensure that the workpiece 50 can immediately enter a fixed state after the protective film 30 has completed position calibration, thereby avoiding the failure of calibration results due to movement of the workpiece 50.

[0223] This technical solution ensures that the workpiece 50 is fixed after the protective film 30 has completed position calibration by positioning the clamping mechanism 500 downstream of the processing path, thus preventing the calibration results from becoming invalid due to the movement of the workpiece 50.

[0224] The clamping mechanism 500 is used to clamp the workpiece 50. By actively applying a constraint force, the workpiece 50 is firmly fixed in a predetermined position, effectively resisting the disturbance when the film picking mechanism 200 picks up the protective film 30 and the reaction force during the pressing process of the film applying mechanism 400. This maintains the relative static state between the workpiece 50 and the protective film 30, preventing misalignment or air bubbles in the transition area between the plane and the side due to slight displacement of the workpiece 50. This ensures the continuity and accuracy of the film applying process, and ultimately achieves a highly efficient and stable multi-sided film applying effect.

[0225] refer to Figure 1 and Figure 6 In some embodiments, the clamping mechanism 500 may include a first drive unit 510, and a first pressure head 520 and a second pressure head 530 spaced apart. The first drive unit 510 is connected to the second pressure head 530 and is used to drive the second pressure head 530 to move toward the first pressure head 520, so that the first pressure head 520 and the second pressure head 530 jointly clamp the workpiece 50.

[0226] The first drive unit 510 refers to a device that can provide power output, which can be implemented using common drive structures such as cylinders, hydraulic cylinders or motors.

[0227] Among them, the first pressure head 520 and the second pressure head 530 are components in the clamping mechanism 500 that directly act on the workpiece 50, and the two are arranged at intervals to form a symmetrical clamping structure.

[0228] The clamping mechanism 500 forms a symmetrical clamping structure with the spaced first pressure head 520 and second pressure head 530, so that the clamping force is evenly distributed on both sides of the workpiece 50, avoiding deformation or positional displacement of the workpiece 50 caused by unilateral force. The structural design of the first drive unit 510 being directly connected to the second pressure head 530 allows the drive unit to precisely control the movement trajectory and speed of the second pressure head 530, realizing dynamic adjustment of the clamping force to adapt to the clamping requirements of workpieces 50 of different sizes and shapes.

[0229] The working method of driving the second pressure head 530 to move toward the first pressure head 520 ensures the stability of the clamping process, reduces the impact of mechanical impact on the position of the workpiece 50, and provides a stable foundation for subsequent film application steps. The dual-point clamping mechanism of the first pressure head 520 and the second pressure head 530 clamping the workpiece 50 together not only improves the reliability of the workpiece 50 fixation, but also avoids the problems of workpiece 50 rotation or sliding that may be caused by traditional single-point clamping. It effectively ensures the accuracy of the workpiece 50 position during the film application process, thereby reducing film application misalignment and the generation of air bubbles, and improving film application quality and production efficiency.

[0230] refer to Figure 1 and Figure 6 In some embodiments, the clamping mechanism 500 may further include a fifth moving unit 540. The fifth moving unit 540 is used to move the workpiece 50 clamped by the first pressure head 520 and the second pressure head 530 toward the film-applying mechanism 400.

[0231] The fifth moving unit 540 refers to a drive device capable of linear or curvilinear motion, which can be achieved by means of screw drive, synchronous belt drive, cylinder drive, or motor drive. The first pressure head 520 and the second pressure head 530 can be mechanically connected to the fifth moving unit 540, thereby achieving synchronous movement under the drive of the fifth moving unit 540.

[0232] The introduction of the fifth moving unit 540 upgrades the clamping mechanism 500 from a static fixing function to a dynamic conveying function, solving the core problem that the workpiece 50 cannot be accurately moved to the film application position after clamping. The fifth moving unit 540 directly drives the workpiece 50 clamped by the first pressure head 520 and the second pressure head 530 to move towards the film application mechanism 400, so that the workpiece 50 is always firmly fixed by the first pressure head 520 and the second pressure head 530 during the movement, avoiding the risk of positional displacement caused by loosening and re-clamping in the traditional transfer method.

[0233] The overall movement mechanism ensures the stability of the workpiece 50's posture, providing a precise positional reference for the film application mechanism 400, enabling the protective film 30 to be accurately aligned with the interface between the plane and the side. Simultaneously, the directional movement capability of the fifth moving unit 540 simplifies the equipment layout, eliminating the need for additional station conversion mechanisms, thereby shortening process intervals and improving the continuity and automation level of the film application process.

[0234] In some embodiments, the clamping mechanism 500 may further include a second limiting unit and a second control unit that are electrically connected to each other. The second limiting unit can limit the clamping mechanism 500 to reciprocate within a certain range by controlling the fifth moving unit 540, and can accurately control the moving position of the clamping mechanism 500.

[0235] The second limiting unit may include three limiters arranged at intervals along the second direction. The two limiters at both ends limit the movement distance and range of the clamping mechanism 500, and the limiter between the two limiters can be used to limit the initial position of the clamping mechanism 500.

[0236] refer to Figure 1 and Figure 7 In some embodiments, the film application mechanism 400 may include a first film application unit 410, a second film application unit 420, and a third film application unit 430.

[0237] The first film-applying unit 410 is used to press a portion of the adhesive surface of the protective film 30 onto the plane of the workpiece 50; the second film-applying unit 420 is used to press a portion of the adhesive surface of the protective film 30 onto the transition arc surface between the plane and the side of the workpiece 50; and the third film-applying unit 430 is used to apply a portion of the protective film 30 to the side of the workpiece 50.

[0238] The first film-applying unit 410 refers to a functional module that can apply pressure to a planar area to achieve a firm fit of the protective film 30. It can be implemented by a mechanical structure with an elastic pressure head, a pneumatic block, or an electromagnetically driven pressure plate.

[0239] The second film application unit 420 can be understood as a pressure application device specifically designed for areas of curvature change. It can be achieved through a flexible pressure roller, an adaptive curved surface pressure block 411, or a segmented pressure adjustment mechanism, with the aim of eliminating air bubbles and gaps on the transition arc surface.

[0240] The third film-applying unit 430 refers to the actuator used for processing vertical surface bonding. It can be implemented by using an adjustable angle pressure roller, a pressure plate with a guiding function, or a bonding device with lateral pressure compensation, with the aim of ensuring the accuracy and firmness of side bonding.

[0241] The film application mechanism 400 achieves multi-stage, step-by-step application through a modular design, effectively solving the regional adaptation problem in film application for 3D curved surfaces. The first film application unit 410 presses the protective film 30 firmly onto the plane of the workpiece 50, providing a stable foundation for application and preventing displacement or air bubbles caused by an excessively large planar area during the initial application stage, thus laying a flat foundation for subsequent application.

[0242] The second film-applying unit 420 presses the transition arc surface between the flat surface and the side surface. Due to the continuous change in curvature in this area, the protective film 30 is prone to being suspended or wrinkled. By applying adaptive pressure through a special unit, the arc surface is ensured to be seamlessly bonded, eliminating the source of air bubbles.

[0243] The third film application unit 430 presses the protective film 30 firmly onto the side of the workpiece 50, completing the overall film application. This targeted operation avoids disturbance to the already applied flat area during side application, ensuring a firm side bond without affecting the quality of the initial application. This segmented, step-by-step application strategy allows each surface area to receive an application method that matches its geometric characteristics, thereby synergistically improving the stability and accuracy of the overall film application. It is particularly suitable for the film application needs of electronic structural components with complex transition surfaces.

[0244] refer to Figure 1 and Figure 7 In some embodiments, the first film-applying unit 410 may include a pressing block 411 and a second driving unit 412. The second driving unit 412 is used to drive the pressing block 411 to move toward the plane of the workpiece 50 and press the protective film 30 placed on the plane of the workpiece 50 against the plane.

[0245] The pressure block 411 is a component with a flat surface, which can be made of metal or high-hardness plastic to ensure that it is not easily deformed when pressure is applied. The size of the pressure block 411 can be adjusted according to the planar area of ​​the workpiece 50, thereby achieving uniform pressing of the protective film 30.

[0246] The second drive unit 412 can be understood as a device that can precisely control the movement trajectory of the pressure block 411, which can be achieved by electric push rod, hydraulic cylinder or pneumatic cylinder, etc.

[0247] This technical solution effectively solves the problem of initial stable pressing of the protective film 30 on the workpiece 50 plane through the coordinated design of the pressure block 411 and the second drive unit 412. As the component that directly contacts the protective film 30, the pressure block 411 has a flat surface that can evenly distribute pressure to cover the entire film surface area, avoiding bubbles or wrinkles caused by local stress concentration, and ensuring that the protective film 30 is fully adhered to the workpiece 50 plane.

[0248] The introduction of the second drive unit 412 enables precise control of the movement trajectory of the pressure block 411. By driving the pressure block 411 to move vertically toward the plane of the workpiece 50, the perpendicularity of the pressure application direction is ensured. This not only eliminates the risk of film surface slippage that may be caused by the traditional horizontal pushing method, but also makes the pressure distribution more uniform. The operation of pressing the protective film 30 onto the plane directly consolidates the stability of the initial position of the film application, laying the foundation for the precise positioning of the first film in the multi-segment vacuum film application process, thereby ensuring the reliability of the overall film application and the continuous execution of subsequent steps.

[0249] refer to Figure 1 and Figure 7 In some embodiments, the second film-applying unit 420 may include a first pressure roller 421, a sixth moving unit 422, a second pressure roller 423, and a seventh moving unit 424.

[0250] The first pressure roller 421 is used to press a portion of the protective film 30 onto a transition arc surface of the workpiece 50. The sixth moving unit 422 is used to drive the first pressure roller 421 to move along a third direction. The second pressure roller 423 is arranged at intervals from the first pressure roller 421 along a second direction, and the pressure block 411 is located between the first pressure roller 421 and the second pressure roller 423. The second pressure roller 423 is used to press a portion of the protective film 30 onto another transition arc surface of the workpiece 50. The seventh moving unit 424 is used to drive the second pressure roller 423 to move along a third direction, wherein the third direction is perpendicular to the second direction.

[0251] The first pressure roller 421 is a pressing component with a curved surface design, which can be made of rubber or silicone to achieve a tight fit to curved surfaces with different curvatures. Its purpose is to adapt to the surface characteristics of complex 3D curved workpieces 50 through its curved structure, avoiding the gap problems caused by traditional flat pressure blocks 411 on curved surfaces. The sixth moving unit 422 can be understood as a linear drive device, such as a screw drive mechanism or a cylinder drive mechanism, whose purpose is to precisely control the feed depth of the first pressure roller 421, ensuring moderate and uniform bonding pressure.

[0252] The first pressure roller 421 and the sixth drive unit can be elastically connected by elastic elements such as springs. This allows them to adapt to the surface changes of the transition arc surface when rolling it, so as to achieve contact at various positions of the transition arc surface and make it easy to press the protective film 30 onto the transition arc surface of the workpiece 50.

[0253] The second pressure roller 423 is another pressing component that works in conjunction with the first pressure roller 421. It can use a similar material and structural design as the first pressure roller 421, but needs to be adjusted according to the size and shape of the specific workpiece 50. Its purpose is to process the transition arc surfaces on opposite sides of the workpiece 50, forming a continuous contact path. The seventh moving unit 424 can be an independent linear drive module, such as a stepper motor-driven slide rail system. Its purpose is to flexibly adjust the position of the second pressure roller 423 to adapt to the size requirements of different workpieces 50.

[0254] In some examples, the second pressure roller 423 and the seventh drive unit can also be elastically connected by elastic elements such as springs, which can also abut against various positions of the transition arc surface, making it easier to press the protective film 30 onto the transition arc surface of the workpiece 50.

[0255] This technical solution addresses the challenge of applying film to the transition area of ​​a 3D curved surface workpiece 50. It achieves precise adhesion to the transition curved surface through the coordinated operation of two pressure rollers. The first pressure roller 421 matches one of the transition curved surfaces of the workpiece 50. Its curved surface design allows for close adhesion to curved surfaces with different curvatures, avoiding the gaps and air bubbles that occur when using a traditional flat pressure block 411 on curved surfaces. The sixth moving unit 422 precisely controls the feed depth of the first pressure roller 421, enabling the roller to adjust the adhesion pressure according to the actual curvature of the transition curved surface. This ensures complete contact between the protective film 30 and the surface of the workpiece 50 while preventing stretching and deformation of the protective film 30 due to excessive pressure.

[0256] The second pressure roller 423 and the first pressure roller 421 are arranged at intervals in the second direction, with the pressure block 411 located between them. This arrangement allows the device to simultaneously process the transition arc surfaces on opposite sides of the workpiece 50. The pressure block 411 first presses the protective film 30 flat onto the plane of the workpiece 50, and then the pressure rollers on both sides process the adjacent transition arc surfaces respectively, forming a continuous bonding path from the plane to the side. The seventh moving unit 424 independently controls the movement of the second pressure roller 423, enabling it to adapt to the transition arc surface positions of workpieces 50 of different sizes, ensuring the flexibility and adaptability of the film application process.

[0257] refer to Figure 1 and Figure 7 In some embodiments, the third film application unit 430 may include a third pressure roller 431, a third drive unit 432, a fourth pressure roller 433, and a fourth drive unit 434.

[0258] The third pressure roller 431 is used to press part of the protective film 30 onto one side of the workpiece 50, and the third drive unit 432 is used to drive the third pressure roller 431 to move toward the workpiece 50 in a third direction.

[0259] The fourth pressure roller 433 and the third pressure roller 431 are spaced apart along the third direction. The fourth pressure roller 433 is used to press part of the protective film 30 onto the other side of the workpiece 50. The fourth drive unit 434 is used to drive the fourth pressure roller 433 to move toward the workpiece 50 along the third direction.

[0260] The third pressure roller 431 is a component that applies pressure to the protective film 30 to achieve the bonding function. It can be implemented using a roller structure made of rubber, with the aim of reducing damage to the surface of the protective film 30 through flexible contact. The fourth pressure roller 433 can be understood as a component with a similar function to the third pressure roller 431 but acting on the opposite side. It can be implemented using a roller structure made of metal, with the aim of providing higher rigidity to adapt to the bonding requirements of different sides.

[0261] The third drive unit 432 refers to an actuator capable of generating linear motion, which can be implemented using a cylinder, lead screw drive, or linear motor, etc., with the purpose of precisely controlling the movement trajectory and force applied by the third pressure roller 431. The fourth drive unit 434 can be understood as a component with similar function to the third drive unit 432 but acting on the fourth pressure roller 433. It can also be implemented using a cylinder, lead screw drive, or linear motor, etc., with the purpose of ensuring the synchronization and independent controllability of the two pressure rollers.

[0262] This technical solution achieves synchronous and precise control of multi-sided film application through a dual-pressure roller collaborative design. The layout of the third pressure roller 431 and the fourth pressure roller 433, spaced apart along the third direction, allows the two pressure rollers to cover the two opposite sides of the workpiece 50 respectively, avoiding the film application interruption problem caused by the need for repeated position adjustments in the traditional single pressure roller.

[0263] Based on the mechanism by which the third drive unit 432 drives the third pressure roller 431 to move along the third direction, the contact depth and pressure distribution between the pressure roller and the side of the workpiece 50 can be precisely controlled, ensuring that the protective film 30 is evenly stressed during the bonding process and reducing the risk of air bubbles caused by uneven pressure. Similarly, the design of the fourth drive unit 434 driving the fourth pressure roller 433 allows the bonding operation of the opposite side to be spatially synchronized with the third pressure roller 431, enabling it to start without waiting for the previous bonding process to be completed, thereby shortening the overall bonding time. The spacing design of the two pressure rollers along the third direction adapts to the spatial distribution characteristics of the side of the workpiece 50, ensuring that the movement trajectories of the pressure rollers do not interfere with each other during the bonding process, while also flexibly matching the side width variations of workpieces 50 of different sizes, improving the adaptability of the device to diverse products.

[0264] refer to Figure 1 , Figure 8 , Figure 9 and Figure 10 In some embodiments, the unwinding mechanism 100 may include a film unwinding member 110, a transmission unit 120, and a film take-up unit 130.

[0265] The film-laying unit 110 is used to store the film roll 10, the transmission unit 120 is used to release the film roll 10 on the film-laying unit 110 into a film belt 20 and transport it toward the film-picking mechanism 200, and the film-rewinding unit 130 is used to wind up the release paper 40 after the protective film 30 on the film belt 20 has been picked up.

[0266] The film-laying component 110 refers to a device that can stably store the film roll 10, which can be implemented by a support frame with a fixed shaft structure or a rotating disk with tension adjustment function.

[0267] The transmission unit 120 can be understood as a component for controlling the release speed and tension of the film roll 10, which can be implemented by a stepper motor in conjunction with a roller assembly, a servo motor-driven traction roller, or a synchronous belt 12231 transmission system.

[0268] The take-up unit 130 refers to a device for recycling the release paper 40, which can be implemented by a take-up shaft with automatic tension adjustment, a take-up drum equipped with guide rollers, or a winding device combined with a pressing mechanism. Its purpose is to prevent the release paper 40 from accumulating or tangling in the production line and to keep the working environment clean.

[0269] The film-laying unit 110 provides a stable storage position for the film roll 10. The storage structure is designed based on the physical characteristics of the film roll 10 to ensure that it does not shift or deform during release, laying the foundation for the subsequent stable release of the film strip 20. The transmission unit 120 releases the film roll 10 into a film strip 20 according to the state of the film roll 10 stored on the film-laying unit 110 and conveys it towards the film-picking mechanism 200. By precisely controlling the release speed and tension, it ensures that the film strip 20 can smoothly and accurately reach the position of the film-picking mechanism 200, providing reliable conditions for the film-picking mechanism 200 to pick up the protective film 30. The film-rewinding unit 130 rewinds the release paper 40 according to the state of the remaining release paper 40 after the protective film 30 is picked up, preventing the release paper 40 from accumulating or tangling in the production line, maintaining a clean working environment, and ensuring that the film application process can proceed continuously and stably.

[0270] refer to Figure 1 , Figure 8 , Figure 9 and Figure 10 In some embodiments, the transmission unit 120 may include a support assembly 121 and a transmission assembly 122. The support assembly 121 is disposed between the transmission assembly 122 and the film dispensing member 110, and is used to guide the released film belt 20 toward the transmission assembly 122. The transmission assembly 122 is used to drive the film belt 20 to move in a second direction and to convey the film belt 20 with the protective film 30 to the film pickup mechanism 200.

[0271] Among them, the support component 121 refers to a structure used to adjust the initial posture of the membrane belt 20 and guide it to smoothly transition to the transmission component 122, which can be implemented by means of devices such as guide rollers or tension regulators.

[0272] The transmission component 122 can be understood as a mechanical structure responsible for the directional conveying of the membrane belt 20 and maintaining constant tension. It can be achieved by means of synchronous belt 12231 transmission, ball screw transmission or linear motor drive, etc., with the aim of ensuring that the membrane belt 20 maintains a precise motion trajectory and stable tension during the conveying process.

[0273] The transmission unit 120 includes a support component 121 and a transmission component 122, which realizes segmented and precise control of the conveying process of the membrane belt 20. The support component 121 focuses on the initial posture adjustment after the membrane belt 20 is released, while the transmission component 122 is responsible for the directional conveying of the membrane belt 20. The two form a relay working mode, which avoids the defect of the membrane belt 20 being easily disturbed in the traditional single transmission structure 1223.

[0274] The support component 121 is disposed between the transmission component 122 and the film release component 110. It is used to guide the released film belt 20 toward the transmission component 122, so that the support component 121 can intervene in the key transition area after the film belt 20 is released. Through physical guidance, it prevents the film belt 20 from sagging or deviating due to its own weight or inertia when it leaves the film release component 110, and ensures that the film belt 20 enters the transmission component 122 in a flat state, laying the foundation for subsequent stable conveying.

[0275] The transmission assembly 122 is used to drive the film belt 20 to move along the second direction and to transport the film belt 20 with the protective film 30 to the film pickup mechanism 200. This design, through clear motion direction constraints and precise displacement control, enables the film belt 20 to maintain constant tension and a straight trajectory during the transport process, avoiding positioning errors caused by shaking or skew during the movement of the film belt 20. This ensures that the film pickup mechanism 200 can accurately obtain the position information of the protective film 30 and perform precise pickup actions.

[0276] refer to Figure 1 , Figure 8 , Figure 9 and Figure 10 In some embodiments, the support assembly 121 may include a guide plate 1211, a first guide roller 1212, a second guide roller 1213, and a pressing member 1214.

[0277] The guide plate 1211 is inclined relative to the second direction. The first guide roller 1212 and the second guide roller 1213 are arranged at intervals along the length of the guide plate 1211. The first guide roller 1212 and the second guide roller 1213 apply pressure to the film belt 20 toward the guide plate 1211 and guide the film belt 20 toward the transmission assembly 122. The pressing member 1214 is disposed between the first guide roller 1212 and the second guide roller 1213. The pressing member 1214 is used to apply downward pressure to the film belt 20 toward the guide plate 1211.

[0278] Among them, the guide plate 1211 refers to a support structure with an inclined angle, which can be implemented by metal plate or composite material plate. The purpose is to provide gravity assistance by inclined setting, so as to avoid the slack phenomenon caused by the membrane belt 20 sagging due to its own weight when it is transported horizontally.

[0279] Among them, the first guide roller 1212 and the second guide roller 1213 refer to two support components with rotation function, which can be realized by using a roller structure made of rubber or metal. The purpose is to ensure that the membrane belt 20 is stably conveyed along the preset path through multi-point support and pressure application.

[0280] The pressing component 1214 can be understood as a device that applies local pressure. It can be implemented by a spring loading mechanism or a pneumatic pressing mechanism. Its purpose is to compensate for insufficient tension in the guide roller spacing area and eliminate minor fluctuations.

[0281] This solution uses a guide plate 1211 that is tilted relative to the second direction, and gravity assists in making the membrane belt 20 naturally adhere to the surface of the guide plate 1211, avoiding the slack caused by its own weight during horizontal transport, and ensuring that the membrane belt 20 remains straight during the initial guiding stage.

[0282] The first guide roller 1212 and the second guide roller 1213 are arranged at intervals along the length of the guide plate 1211 to form a multi-point support structure. The guide rollers apply pressure to the film belt 20 toward the guide plate 1211 to prevent the film belt 20 from bouncing during the conveying process and to prevent the film belt 20 from shifting laterally due to inertia or vibration during the conveying process. At the same time, the guide rollers guide the film belt 20 to be stably conveyed to the transmission component 122 along the preset path.

[0283] The coordination between the inclined guide plate 1211 and the pressure application mechanism enables the film belt 20 to form a stable conveying flow under the combined action of gravity, guide roller pressure and downward pressure, laying the foundation for the accurate pickup and film application calibration of the subsequent protective film 30.

[0284] refer to Figure 1 , Figure 8 , Figure 9 and Figure 10 In some embodiments, the transmission assembly 122 may include a positioning plate 1221, a conveying plate 1222, and a transmission structure 1223.

[0285] A positioning plate 1221 is disposed on the side of the guide plate 1211 facing away from the film placement member 110, and is used to support the conveying of the film belt 20 in the second direction. A conveying plate 1222 and a positioning plate 1221 are arranged at intervals along the second direction, and the conveying plate 1222 is used to convey the film belt 20 to the film pickup mechanism 200. A transmission structure 1223 is connected to the conveying plate 1222, and the transmission structure 1223 is used to drive the conveying plate 1222 to move along the second direction.

[0286] The positioning plate 1221 is a rigid support component, which can be made of metal sheet or high-strength composite material. Its purpose is to provide a stable support platform for the membrane belt 20 and prevent the membrane belt 20 from sagging or twisting during transportation. The conveyor plate 1222 can be understood as a moving component that carries the membrane belt 20. It can move smoothly through the linear guide rail 1224 or the slider structure to ensure that the membrane belt 20 is transported to the membrane pickup mechanism 200 with a constant posture. The transmission structure 1223 is a precision drive device, which can be implemented by means of gear and rack transmission or ball screw transmission. Its purpose is to eliminate the accumulation of errors in the intermediate transmission links by directly driving the conveyor plate 1222.

[0287] This design uses a positioning plate 1221 positioned on the side of the guide plate 1211 facing away from the film placement component 110. This plate receives the film belt 20 guided by the support assembly 121, providing a rigid support platform for the film belt 20 in the second direction. This ensures the film belt 20 remains flat before entering the transmission circuit, preventing sagging or twisting due to insufficient support. The conveyor plate 1222 and the positioning plate 1221 are arranged at intervals along the second direction to form a stepped conveying path. This ensures a smooth transition of the film belt 20 from the positioning plate 1221 to the conveyor plate 1222, and also absorbs tension fluctuations in the film belt 20 through the gap between them. This prevents displacement deviation of the film belt 20 due to sudden force during conveying, ensuring the film belt 20 is conveyed to the film pickup mechanism 200 with a constant posture.

[0288] The transmission structure 1223 is directly connected to the conveyor plate 1222. By precisely controlling the movement trajectory and speed of the conveyor plate 1222, the displacement of the film belt 20 in the second direction is strictly synchronized with the action of the film pickup mechanism 200, avoiding the response lag problem caused by the drive point being far away from the film belt 20, thereby stably conveying the film belt 20 to the preset pickup position of the film pickup mechanism 200.

[0289] The back-facing position of the positioning plate 1221 fully utilizes the guiding effect of the support component 121, ensuring that the membrane belt 20 has completed preliminary calibration before entering the transmission stage. The spacing design between the conveyor plate 1222 and the positioning plate 1221 maintains the continuity of conveying while avoiding structural interference from affecting the attitude of the membrane belt 20.

[0290] In some embodiments, the transmission assembly 122 may further include a sensor 1225, which is disposed between the positioning plate 1221 and the conveying plate 1222. The sensor 1225 can be used to sense the protective film 30 on the film belt 20 to confirm whether there is still a protective film 30 on the film belt 20, and to facilitate the film picking mechanism 200 to obtain the position of the protective film 30 through the sensor 1225.

[0291] In some embodiments, the positioning plate 1221 and the conveying plate 1222 may be provided with two guide plates 1211 that limit the width of the film belt 20, thereby preventing the film belt 20 from shifting in the width direction during the conveying process and improving the stability of the film belt 20 conveying process.

[0292] refer to Figure 1 , Figure 8 , Figure 9 and Figure 10 In some embodiments, the transmission structure 1223 may include a drive motor, a timing belt 12231, a lead screw 12232, and a nut. The nut is fixedly connected to the conveyor plate 1222, the lead screw 12232 is threadedly connected to the nut, and the timing belt 12231 is sleeved on the drive motor and the lead screw 12232, so that the drive motor drives the lead screw 12232 to rotate, and drives the nut and the conveyor plate 1222 to move in the second direction through the lead screw 12232.

[0293] The drive motor refers to a type of motor capable of providing precise speed control, which can be implemented using a stepper motor or a servo motor, aiming to ensure the stability of power output. The synchronous belt 12231 is a transmission belt with a toothed meshing structure, which can be made of rubber or polyurethane, aiming to achieve slip-free power transmission. The lead screw 12232 is a transmission element with helical grooves, which can be in the form of a ball screw 12232 or a trapezoidal lead screw 12232, aiming to convert rotational motion into linear displacement. The nut is a transmission component used in conjunction with the lead screw 12232, which can have an internal thread design, aiming to achieve precise conversion of linear displacement through the threaded engagement with the lead screw 12232.

[0294] The transmission structure 1223 provides stable and controllable rotational power through a drive motor, and in conjunction with the synchronous belt 12231, achieves slip-free power transmission, accurately transmitting the motor output to the lead screw 12232. The threaded engagement between the lead screw 12232 and the nut converts the rotational motion into linear displacement. The nut is fixed on the conveyor plate 1222, directly driving the conveyor plate 1222 to move smoothly along the second direction.

[0295] The precise speed control of the drive motor avoids speed fluctuations during the conveying process. The tooth meshing design of the synchronous belt 12231 ensures a constant transmission ratio and prevents slippage during power transmission. The precision threaded engagement between the lead screw 12232 and the nut accurately converts the rotation angle into linear displacement, ensuring that the movement trajectory of the conveyor plate 1222 remains highly consistent.

[0296] refer to Figure 1 , Figure 8 , Figure 9 and Figure 10In some embodiments, the transmission assembly 122 may further include a linear guide 1224 for guiding the conveyor plate 1222 to move in a second direction.

[0297] The linear guide 1224 is a mechanical component that provides precise guidance. It can be implemented using structures such as ball linear guides 1224, roller linear guides 1224, or sliding linear guides 1224. Its purpose is to provide high-precision trajectory constraints for the movement of the conveyor plate 1222, thereby preventing the membrane belt 20 from deviating during transport. The conveyor plate 1222 is the component that carries and transports the membrane belt 20. Through its cooperation with the linear guide 1224, it achieves stable linear motion, ensuring that the membrane belt 20 is transported to the film pickup station with a constant posture.

[0298] The linear guide 1224 serves as a rigid guiding element to guide the conveyor plate 1222 to move along the second direction. This ensures that the conveyor plate 1222 strictly follows the preset linear trajectory under the drive of the transmission structure 1223, effectively suppressing lateral offset and swaying caused by mechanical vibration, uneven load, or external interference.

[0299] The film belt 20 maintains a continuous and stable position reference during transport, avoiding minor displacements caused by unstable transport, thus providing a precise positioning basis for the film pickup mechanism 200. The guiding function of the linear guide rail 1224 not only enhances the repeatability of the conveyor plate 1222's movement but also reduces the risk of deformation of the film belt 20 during high-speed transport, ensuring that the film belt 20 is always transported to the film pickup station in a constant posture, directly supporting the accurate execution of subsequent calibration and film application steps.

[0300] refer to Figure 1 and Figure 11 In some embodiments, the film receiving unit 130 may include a film receiving member 131, a driving member 132, and a film rolling assembly 133.

[0301] The drive unit 132 is used to drive the take-up unit 131 to rotate and rewind the picked-up release paper 40, and the rolling assembly 133 is used to feed the release paper 40 to the take-up unit 131.

[0302] The take-up component 131 is a structural part capable of carrying and winding the release paper 40. It can be implemented using a cylindrical roll, a multi-segment support roller, or other mechanical structures with similar functions. Its purpose is to provide a stable physical support for the release paper 40, ensuring that the release paper 40 can be stacked in an orderly manner during the winding process. The drive component 132 can be understood as a device that provides rotational power output. It can be implemented using a stepper motor, a servo motor, or a DC motor. Its purpose is to maintain a constant tension on the release paper 40 during winding by precisely controlling the rotational speed and torque, avoiding stretching deformation or loosening accumulation caused by speed fluctuations.

[0303] Specifically, the rolling film assembly 133 is a mechanism for guiding and conveying the release paper 40, which can be achieved through gear transmission, belt transmission, or a combination of pressure rollers. Its purpose is to eliminate the lateral swaying and longitudinal vibration of the release paper 40 in the conveying path, thereby ensuring the stable conveying of the release paper 40.

[0304] This solution uses the take-up assembly 131 as the physical support for the release paper 40, providing a base surface for winding and ensuring that the release paper 40 can be orderly stacked and wound. The drive unit 132 precisely controls the rotational power output of the take-up assembly 131, ensuring that the release paper 40 maintains constant tension during winding and avoiding stretching deformation or slack accumulation caused by sudden changes in rotation speed. The rolling assembly 133 smoothly transitions the release paper 40 from the transmission unit 120 to the take-up assembly 131. Its design, through the reasonable distribution of physical contact points, eliminates lateral swaying and longitudinal jittering of the release paper 40 in the movement path.

[0305] The cooperation between the rolling film assembly 133 and the take-up film assembly 131 ensures that the release paper 40 forms a stable guide trajectory at the end of the conveying process, thereby guaranteeing the accurate positioning of the take-up starting point and effectively preventing the release paper 40 from curling at the edges or shifting at the center.

[0306] In some embodiments, the film receiving unit 130 may further include a plurality of spaced-apart drive rollers arranged in a spaced-apart direction to support the release paper 40. The plurality of drive rollers can be disposed on the side of the rolling film assembly 133 facing the end of the drive unit 120 and are used to support the release paper 40 output from the end of the drive unit 120.

[0307] refer to Figure 1 and Figure 11In some embodiments, the rolling film assembly 133 may include a first rolling film gear 1331, a second rolling film gear 1332, and a guide rod cylinder 1333. The guide rod cylinder 1333 is used to drive the second rolling film gear 1332 to move toward and mesh with the first rolling film gear 1331, so as to convey the release paper 40 to the take-up member 131 through the first rolling film gear 1331 and the second rolling film gear 1332.

[0308] The first rolling gear 1331 is a transmission component with a precise tooth profile, which can be implemented using different forms such as spur gears, helical gears, or herringbone gears. The second rolling gear 1332 is the driven gear that meshes with the first rolling gear 1331, and it can be adapted to different release paper 40 materials by adjusting parameters such as module and pressure angle. The guide rod cylinder 1333 is a linear drive device, which can achieve position adjustment through various methods such as pneumatic, hydraulic, or electric push rods. The purpose of the above design is to ensure that the release paper 40 maintains constant tension and linear speed during the conveying process.

[0309] This technical solution uses the cooperation of the first rolling gear 1331 and the second rolling gear 1332 to replace the traditional friction transmission method with a precise tooth meshing relationship, ensuring that the release paper 40 maintains a constant linear speed during the conveying process and avoiding slippage caused by changes in the surface friction coefficient.

[0310] The introduction of the guide rod cylinder 1333 enables the adjustment of the position of the second film rolling gear 1332, dynamically controlling the gear meshing state according to the film taking requirements. When the guide rod cylinder 1333 drives the second film rolling gear 1332 to move towards the first film rolling gear 1331, a rigid transmission connection can be established, eliminating the elastic deformation problem existing in traditional belt or roller drives, and ensuring that the release paper 40 conveying process is not affected by external vibration. At the same time, this design allows for quick separation of the gear set when maintaining the equipment or replacing the release paper 40 roll, significantly improving operational convenience.

[0311] The mechanism of feeding the release paper 40 to the receiving member 131 through the coordinated action of the first rolling film gear 1331 and the second rolling film gear 1332 forms a closed-loop tension control system. This ensures that the release paper 40 can maintain uniform tension after the protective film 30 is peeled off, preventing the film strip 20 from becoming loose or overstretched on the film application path. This ensures the positioning accuracy of the film pickup mechanism 200 when acquiring the protective film 30, providing a stable foundation for the subsequent calibration mechanism 300 to perform adhesive surface correction. Ultimately, this ensures that the protective film 30 can be accurately adhered to the surface of the workpiece 50 with a structure where the plane and the side intersect.

[0312] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0313] It should be noted that phrases such as "in particular implementation," "in some embodiments," "in this embodiment," and "exemplarily" used in the specification indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases may not necessarily refer to the same embodiment. Moreover, when describing a specific feature, structure, or characteristic in conjunction with embodiments, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0314] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0315] It should be readily understood that “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0316] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0317] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A film-applying device, characterized in that, include: An unwinding mechanism (100) is used to store the film roll (10) and release the film roll (10) into a film strip (20) for transport. The film pickup mechanism (200) is disposed downstream of the processing path of the film application device relative to the unwinding mechanism (100). The film pickup mechanism (200) is used to pick up the protective film (30) on the film belt (20) conveyed by the unwinding mechanism (100), and the film pickup mechanism (200) is also used to place the picked-up protective film (30) on a plane of the workpiece (50). A calibration mechanism (300) is disposed downstream of the processing path of the film-applying device relative to the film-picking mechanism (200). The calibration mechanism (300) is used to obtain information on the adhesive surface of the protective film (30) picked up by the film-picking mechanism (200) facing the workpiece (50), so that the film-picking mechanism (200) adjusts the adhesive surface to be flush with the plane of the workpiece (50). A film applicator (400) is used to apply a portion of the adhesive surface of the protective film (30) to the plane and the side surface; The plane of the workpiece (50) intersects with its side surface.

2. The film-applying device according to claim 1, characterized in that, The calibration apparatus (300) includes: A vision camera (310) is used to acquire image data of the adhesive surface picked up by the film pickup mechanism (200); The first control unit is transmitted and connected to the vision camera (310), and is controlled and connected to the film pickup mechanism (200). The first control unit is used to control the film pickup mechanism (200) to adjust the placement position of the protective film (30) according to the image data so that the adhesive surface is flush with the plane. A support for supporting the vision camera (310) and the first control unit.

3. The film-applying device according to claim 2, characterized in that, The calibration apparatus (300) also includes: The first moving unit (320) is disposed on the support and is used to drive the vision camera (310) to move closer to or further away from the protective film (30) on the film pickup mechanism (200) along the first direction; The first limiting unit (330) is electrically connected to the first control unit. The first control unit is used to control the first moving unit (320) to move along the first direction between the first position and the second position based on the position information of the vision camera (310) obtained by the first limiting unit (330). Along the first direction, the first position is closer to the film pickup mechanism (200) relative to the second position.

4. The film-applying device according to claim 2, characterized in that, The film pickup mechanism (200) includes: Pick-up unit (210) for picking up the protective film (30) on the film strip (20); The adjustment unit (220) is connected to both the pickup unit (210) and the first control unit. The adjustment unit (220) is used to adjust the placement position of the protective film (30) on the pickup unit (210) under the control of the first control unit.

5. The film-applying device according to claim 4, characterized in that, The picking unit (210) includes: A substrate (211) is disposed at one end of the adjustment unit (220) facing the vision camera (310); A suction cup (212) is disposed on the substrate (211); The third moving unit (213) is connected to the suction cup (212) and is used to drive the suction cup (212) to reciprocate between the adsorption position and the release position relative to the substrate (211) along the second direction; When the suction cup (212) moves to the adsorption position, the suction cup (212) is used to adsorb and pick up the protective film (30) on the membrane strip (20); When the suction cup (212) moves to the release position, the suction cup (212) is used to release the protective film (30).

6. The film-applying device according to claim 5, characterized in that, The adjustment unit (220) includes: The tilting component (221) is connected to the pickup unit (210). The tilting component (221) is used to drive the protective film (30) to rotate so that the adhesive surface of the protective film (30) forms an angle with the plane. A rotating component (222) is connected to the tilting component (221). The rotating component (222) drives the tilting component (221) to drive the pickup unit (210) and the protective film (30) to rotate around the first rotating axis. The first rotation axis is perpendicular to the plane of the workpiece (50).

7. The film-applying device according to claim 6, characterized in that, The tilting assembly (221) includes: The tilting seat (2211) is connected to the pickup unit (210); The telescopic rod (2212) is rotatably connected at one end to the rotating assembly (222) and at the other end to the tilting seat (2211); A connecting rod (2213) is spaced apart from the telescopic rod (2212). One end of the connecting rod (2213) is rotatably connected to the rotating assembly (222), and the other end is rotatably connected to the tilting seat (2211). The telescopic rod (2212) and the connecting rod (2213) are used together to drive the protective film (30) to rotate.

8. The film-applying device according to claim 1, characterized in that, The film application device further includes a clamping mechanism (500), which is disposed downstream of the processing path of the film application device relative to the calibration mechanism (300); The clamping mechanism (500) is used to clamp the workpiece (50).

9. The film-applying device according to claim 1, characterized in that, The film application mechanism (400) includes: The first film-applying unit (410) is used to press a portion of the adhesive surface of the protective film (30) onto the plane of the workpiece (50); The second film-applying unit (420) is used to press a portion of the adhesive surface of the protective film (30) onto the transition arc surface between the plane and the side surface of the workpiece (50); The third film-applying unit (430) is used to apply a portion of the protective film (30) to the side of the workpiece (50).

10. The film-applying device according to claim 9, characterized in that, The first film application unit (410) includes a pressure block (411) and a second driving unit (412); The second driving unit (412) is used to drive the pressure block (411) to move toward the plane of the workpiece (50) and press the protective film (30) placed on the plane of the workpiece (50) against the plane.

11. The film-applying device according to claim 10, characterized in that, The second film application unit (420) includes: A first pressure roller (421) is used to press a portion of the protective film (30) against a transition arc surface of the workpiece (50); The sixth moving unit (422) is used to drive the first pressure roller (421) to move along a third direction; The second pressure roller (423) is arranged at a distance from the first pressure roller (421) along the second direction, and the pressure block (411) is located between the first pressure roller (421) and the second pressure roller (423). The second pressure roller (423) is used to press part of the protective film (30) onto another transition arc surface of the workpiece (50). The seventh moving unit (424) is used to drive the second pressure roller (423) to move along the third direction; Wherein, the third direction is perpendicular to the second direction.

12. The film-applying device according to claim 11, characterized in that, The third film application unit (430) includes: The third pressure roller (431) is used to press part of the protective film (30) against one side of the workpiece (50); The third drive unit (432) is used to drive the third pressure roller (431) to move toward the workpiece (50) in a third direction; A fourth pressure roller (433) is spaced apart from the third pressure roller (431) along the third direction, and the fourth pressure roller (433) is used to press a portion of the protective film (30) against the other side of the workpiece (50); The fourth drive unit (434) is used to drive the fourth pressure roller (433) to move toward the workpiece (50) in a third direction.

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