Adhesive tape stripping device for middle frame of display screen

Abstract

The invention discloses an adhesive tape stripping device for a middle frame of a display screen. The adhesive tape stripping device comprises a positioning platform, a film clamping mechanism, a stripping knife and a film pressing mechanism, the positioning platform is used for bearing a sheet stock, and the sheet stock comprises a release film and a plurality of adhesive tapes attached to the top surface of the release film; the film clamping mechanism is used for clamping the first end of a release film and driving the first end of the release film to move in the X-axis direction and the Z-axis direction. The stripping knife is arranged between the positioning platform and the film clamping mechanism, and a blade of the stripping knife abuts against the bottom surface of the release film, so that the release film deforms, and stripping of the adhesive tape and the release film is achieved; the film pressing mechanism is used for pressing and fixing the second end of the release film before the first end, clamped by the film clamping mechanism, of the release film moves in the Z-axis direction; the problems of incomplete stripping and adhesive tape deformation caused by the fact that a traditional suction cup makes contact with the adhesive tape are solved, the stripping success rate and the working efficiency are improved, and meanwhile the integrity of the adhesive tape is protected.

Description

Technical Field

[0001] This invention relates to the field of display screen manufacturing equipment, and more particularly to a device for peeling off adhesive strips from the frame of a display screen. Background Technology

[0002] In the assembly process of the display screen frame, multiple adhesive strips are typically attached to the frame for bonding and fixation. In existing technology, these adhesive strips are usually carried by a continuous release film and pre-arranged and positioned on a feeding platform in sheet form. During the attachment process, a robotic arm equipped with vacuum suction cups picks up and transfers the adhesive strips one by one. However, due to the strong adhesive properties of the strips, reliable separation between the strips and the release film is difficult during the suction process, leading to problems such as incomplete peeling, strip deformation, or failed pickup, affecting production efficiency and product quality. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a device for peeling adhesive strips from the frame of a display screen, which can effectively achieve reliable separation of adhesive strips and release film, and improve peeling success rate and work efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a device for peeling off adhesive strips from the middle frame of a display screen, comprising:

[0005] A positioning platform is used to carry sheet material, the sheet material including release film and several adhesive strips attached to the top surface of the release film;

[0006] A film clamping mechanism is used to clamp the first end of the release film and drive the first end of the release film to move along the X-axis and Z-axis directions;

[0007] A peeling blade is positioned between the positioning platform and the film clamping mechanism. The blade of the peeling blade abuts against the bottom surface of the release film, causing the release film to deform and thus peeling the adhesive strip from the release film.

[0008] A pressing mechanism is used to press and fix the second end of the release film before the first end of the release film held by the clamping mechanism moves along the Z-axis direction;

[0009] When the clamping mechanism holds the first end of the release film and moves horizontally along the X-axis, the pressing mechanism separates from the second end of the release film to allow the release film to be pulled and peeled off by the clamping mechanism.

[0010] The beneficial effects of this invention are as follows: The adhesive strip peeling device for the display screen frame provided by this invention carries a sheet containing a release film and several adhesive strips attached to its top surface through a positioning platform. A film clamping mechanism clamps the first end of the release film and drives it to move along the X-axis and Z-axis directions. A peeling blade is set between the positioning platform and the film clamping mechanism, and its blade abuts against the bottom surface of the release film, causing the release film to deform and thus peeling the adhesive strips from the release film. Before the film clamping mechanism moves along the Z-axis direction, the film pressing mechanism presses and fixes the second end of the release film. When the film clamping mechanism moves horizontally along the X-axis direction, the film pressing mechanism separates from the second end of the release film to allow the release film to be pulled and peeled off by the film clamping mechanism. Thus, the deformation caused by the peeling blade abutting, combined with the sequential pressing and releasing of the two ends of the release film by the film pressing mechanism, achieves reliable separation of the adhesive strips from the release film, avoiding the problems of incomplete peeling and adhesive strip deformation caused by traditional suction cup contact with the adhesive strip, improving the peeling success rate and work efficiency, and protecting the integrity of the adhesive strips. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the adhesive strip peeling device for the display screen frame according to Embodiment 1 of the present invention;

[0012] Figure 2 This is a partial structural schematic diagram of the adhesive strip peeling device for the display screen frame according to Embodiment 1 of the present invention;

[0013] Figure 3 This is a schematic diagram of the membrane clamping mechanism according to Embodiment 1 of the present invention;

[0014] Figure 4 This is a schematic diagram of the structure of the third X-axis drive component in Embodiment 1 of the present invention.

[0015] Label Explanation:

[0016] 1. Positioning platform; 11. Detection hole; 12. Position detection sensor; 2. Film clamping mechanism; 21. Support clamping plate; 22. Drive clamping plate; 23. Clamping cylinder; 24. First Z-axis drive assembly; 25. First X-axis drive assembly; 3. Peeling knife; 31. Third X-axis drive assembly; 4. Film pressing mechanism; 41. Pressing module; 42. Mounting plate; 43. Second Z-axis drive assembly; 44. Second X-axis drive assembly; 5. Robotic arm; 6. Vision inspection device; 61. CCD camera; 62. Light source assembly. Detailed Implementation

[0017] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0018] Please refer to Figures 1 to 4 A device for peeling adhesive strips from the frame of a display screen, comprising:

[0019] Positioning platform 1 is used to carry sheet material, the sheet material including release film and a plurality of adhesive strips attached to the top surface of release film;

[0020] The film clamping mechanism 2 is used to clamp the first end of the release film and drive the first end of the release film to move along the X-axis and Z-axis directions;

[0021] A peeling blade 3 is positioned between the positioning platform 1 and the film clamping mechanism 2. The blade of the peeling blade 3 abuts against the bottom surface of the release film to deform the release film and thus peel the adhesive strip from the release film.

[0022] The pressing mechanism 4 is used to press and fix the second end of the release film before the first end of the release film held by the clamping mechanism 2 moves along the Z-axis direction;

[0023] When the clamping mechanism 2 clamps the first end of the release film and moves horizontally along the X-axis, the pressing mechanism 4 separates from the second end of the release film to allow the release film to be pulled and peeled off by the clamping mechanism 2.

[0024] The working principle of this invention is as follows: First, a sheet containing a release film and several adhesive strips attached to its top surface needs to be placed on the positioning platform 1. After the device is started, the pressing mechanism 4 first presses and fixes the second end of the release film. Then, the clamping mechanism 2 clamps the first end of the release film and drives it to rise along the Z-axis, so that the first end of the release film rises and contacts the blade of the peeling knife 3 to form an initial peeling angle. Then, the clamping mechanism 2 drives the first end of the release film to move horizontally along the X-axis. At the same time, the pressing mechanism 4 separates from the second end of the release film and releases the pressing. The clamping mechanism 2 continues to pull the release film so that its bottom surface slides along the blade of the peeling knife 3. Since the blade of the peeling knife 3 maintains line contact with the bottom surface of the release film and causes the release film to arch upward, the edges of the adhesive strips gradually lift up and separate from the release film due to the difference in their own rigidity and viscosity. As the release film is pulled and moved, each adhesive strip separates from the release film in turn. After peeling is completed, the robot arm 5 can pick up and transfer the separated adhesive strips one by one.

[0025] As can be seen from the above description, the beneficial effects of the present invention are as follows: the positioning platform 1 carries a sheet containing a release film and several adhesive strips attached to its top surface; the film clamping mechanism 2 clamps the first end of the release film and drives it to move along the X-axis and Z-axis directions; the peeling knife 3 is disposed between the positioning platform 1 and the film clamping mechanism 2, and its blade abuts against the bottom surface of the release film, causing the release film to deform and thus peeling the adhesive strips from the release film; the film pressing mechanism 4 presses and fixes the release film before the film clamping mechanism 2 clamps the first end of the release film and moves it along the Z-axis direction. When the clamping mechanism 2 holds the first end of the release film and moves it horizontally along the X-axis, the pressing mechanism 4 separates from the second end of the release film to allow the release film to be pulled and peeled off by the clamping mechanism 2. Thus, the deformation generated by the peeling blade 3 in contact with the release film, combined with the timing of the pressing mechanism 4 pressing and releasing the two ends of the release film, achieves reliable separation of the adhesive strip and the release film. This avoids the problems of incomplete peeling and adhesive strip deformation caused by the traditional suction cup contact with the adhesive strip, improves the peeling success rate and work efficiency, and protects the integrity of the adhesive strip.

[0026] Furthermore, the film clamping mechanism 2 includes a support clamping plate 21, a clamping cylinder 23, a drive clamping plate 22, a first X-axis drive assembly 25, and a first Z-axis drive assembly 24. The drive clamping plate 22 is mounted on the output end of the clamping cylinder 23. The clamping cylinder 23 is mounted on the support clamping plate 21 and is used to drive the drive clamping plate 22 to open and close relative to the support clamping plate 21 to clamp the first end of the release film. The output end of the first Z-axis drive assembly 24 is connected to the support clamping plate 21, and the output end of the first X-axis drive assembly 25 is connected to the first Z-axis drive assembly 24.

[0027] As described above, the film clamping mechanism 2 includes a support clamping plate 21, a clamping cylinder 23, a drive clamping plate 22, a first X-axis drive assembly 25, and a first Z-axis drive assembly 24. The drive clamping plate 22 is mounted on the output end of the clamping cylinder 23, and the clamping cylinder 23 is mounted on the support clamping plate 21 and drives the drive clamping plate 22 to open and close relative to the support clamping plate 21 to clamp the first end of the release film. The output end of the first Z-axis drive assembly 24 is connected to the support clamping plate 21, and the output end of the first X-axis drive assembly 25 is connected to the first Z-axis drive assembly 24. This achieves precise linkage of the film clamping mechanism 2 in the X-axis and Z-axis directions. The integrated layout of the support clamping plate 21 and the clamping cylinder 23 improves the structural compactness. The opening and closing clamping method of the drive clamping plate 22 and the support clamping plate 21 enhances the stability and reliability of clamping the first end of the release film. The hierarchical connection relationship between the first X-axis drive assembly 25 and the first Z-axis drive assembly 24 ensures the coordination and positioning accuracy of the movement in the two directions, thereby ensuring the smoothness and consistency of the peeling process.

[0028] Furthermore, the pressing mechanism 4 includes a pressing module 41, a second Z-axis drive assembly 43, and a second X-axis drive assembly 44. The pressing module 41 is connected to the output end of the second Z-axis drive assembly 43 and is used to press and fix the second end of the release film. The second Z-axis drive assembly 43 is connected to the output end of the second X-axis drive assembly 44.

[0029] As described above, the pressing mechanism 4 includes a pressing module 41, a second Z-axis drive assembly 43, and a second X-axis drive assembly 44. The pressing module 41 is connected to the output end of the second Z-axis drive assembly 43 and is used to press and fix the second end of the release film. The second Z-axis drive assembly 43 is connected to the output end of the second X-axis drive assembly 44, thereby realizing the precise pressing and lifting function of the pressing mechanism 4 in the Z-axis direction. The addition of the second X-axis drive assembly 44 enables the pressing module 41 to have horizontal adjustment capability, and the pressing point can be flexibly adjusted according to the position of the second end of the release film, which enhances the adaptability of the pressing mechanism 4 to sheets of different sizes. The connection relationship between the output ends of the second Z-axis drive assembly 43 and the second X-axis drive assembly 44 ensures the accuracy and response speed of the pressing action, thereby improving the operational flexibility and pressing reliability of the pressing mechanism 4.

[0030] Furthermore, the output end of the second Z-axis drive assembly 43 is provided with a mounting plate 42, and the pressure module 41 is detachably mounted on the mounting plate 42.

[0031] As described above, the output end of the second Z-axis drive assembly 43 is provided with a mounting plate 42, and the pressing module 41 is detachably mounted on the mounting plate 42. This allows the pressing module 41 to be securely connected to the second Z-axis drive assembly 43 through the mounting plate 42. The detachable mounting method facilitates the replacement of pressing modules 41 of different specifications according to the width or material of the second end of the release film, simplifies the maintenance and replacement process, reduces equipment maintenance costs, and improves the compatibility and versatility of the pressing mechanism 4 for various production needs. The setting of the mounting plate 42 also enhances the installation stability of the pressing module 41, ensuring uniform force during the pressing process and avoiding pressing offset or failure.

[0032] Furthermore, the bottom surface of the pressing block is provided with a flexible buffer layer.

[0033] As described above, the bottom surface of the pressing block is provided with a flexible buffer layer. This allows the pressing mechanism 4 to effectively buffer the pressure of the pressing block on the release film and adhesive strip when pressing the second end of the release film, avoiding rigid contact that could cause scratches on the release film, damage or deformation of the adhesive strip. At the same time, the flexible buffer layer can adapt to minor unevenness on the surface of the release film, increase the pressing contact area, and improve the stability and reliability of the pressing and fixing, thereby better protecting the integrity of the sheet material and ensuring the pressing effect.

[0034] Furthermore, it also includes a third X-axis drive assembly 31, the output end of which is connected to the peeling blade 3 and used to drive the peeling blade 3 to move along the X-axis direction.

[0035] As described above, the device also includes a third X-axis drive assembly 31. The output end of the third X-axis drive assembly 31 is connected to the peeling blade 3 and is used to drive the peeling blade 3 to move along the X-axis direction. This allows the peeling blade 3 to actively adjust its horizontal position according to the position of the adhesive strip during the process of the release film being pulled and peeled, thereby expanding the effective peeling range of a single peeling blade 3. This is particularly suitable for situations where the adhesive strip distribution span on the sheet material is large. The independent drive of the peeling blade 3 by the third X-axis drive assembly 31 improves the flexibility of the peeling process and can cooperate with the movement of the film clamping mechanism 2 to achieve more complex peeling trajectories, thereby improving the device's adaptability to sheets of different specifications.

[0036] Furthermore, it also includes a visual inspection device 6 disposed above the peeling blade 3, the visual inspection device 6 being used to identify the position information of the adhesive strip on the release film.

[0037] As described above, the system also includes a vision inspection device 6 positioned above the peeling blade 3. The vision inspection device 6 is used to identify the position information of the adhesive strips on the release film, thereby achieving accurate acquisition of the coordinates of each adhesive strip on the sheet material. This provides a positioning basis for the timing control of the actions of the clamping mechanism 2 and the pressing mechanism 4, avoiding missed peeling of adhesive strips or deviation in peeling position caused by blind peeling. The vertical arrangement of the vision inspection device 6 and the peeling blade 3 saves horizontal space of the equipment, while ensuring that the detection field of view covers the entire peeling area, thereby improving the intelligence and accuracy of the peeling operation.

[0038] Furthermore, the visual inspection device 6 includes a CCD camera 61 and a light source assembly 62.

[0039] As described above, the visual inspection device 6 includes a CCD camera 61 and a light source assembly 62. The high-resolution imaging capability of the CCD camera 61 is used to accurately capture the contour and positional features of the adhesive strip. The light source assembly 62 provides stable and uniform illumination for the CCD camera 61, effectively eliminating reflections from the release film or interference from ambient light, improving image contrast and clarity, and ensuring that the visual recognition algorithm can accurately identify the edge of the adhesive strip. This significantly improves the accuracy and response speed of the visual inspection device 6 in identifying the position of the adhesive strip, and enhances the adaptability of the stripping device in complex lighting environments.

[0040] Furthermore, the positioning platform 1 has a detection hole 11 connecting its top and bottom surfaces, and a positioning detection sensor 12 is provided directly below the detection hole 11. The positioning detection sensor 12 is electrically connected to the film clamping mechanism 2 and the film pressing mechanism 4.

[0041] As described above, the positioning platform 1 has a detection hole 11 connecting its top and bottom surfaces. A positioning detection sensor 12 is located directly below the detection hole 11. The positioning detection sensor 12 is electrically connected to the clamping mechanism 2 and the pressing mechanism 4. This allows the positioning detection sensor 12 to detect the presence of the sheet material in a timely manner through the detection hole 11 when the sheet material is placed on the positioning platform 1, and to feed back the positioning signal to the control system of the clamping mechanism 2 and the pressing mechanism 4. This ensures that the peeling device will only start subsequent actions after the sheet material is accurately positioned, avoiding energy waste and mechanical wear caused by the mechanism running idle in the absence of material. The interconnected structure of the detection hole 11 enables non-contact detection of the sheet material, improving detection sensitivity and the safety of the system's automated control.

[0042] Furthermore, the number of detection holes 11 and the number of position detection sensors 12 are at least two.

[0043] As described above, the number of detection holes 11 and the number of position detection sensors 12 are at least two. This multi-point detection layout avoids false detection problems caused by partial obstruction of the sheet material or failure of a single sensor. At least two position detection sensors 12 can work together to judge the overall position status of the sheet material, improving the reliability and fault tolerance of the detection results. The system only determines that the sheet material is in place when all sensors detect it, thereby effectively preventing peeling failure or equipment failure caused by detection misjudgment and enhancing the stability and safety of the peeling device.

[0044] Please refer to Figures 1 to 4 Embodiment 1 of the present invention is: a strip peeling device for the adhesive strip of a display screen frame, comprising a positioning platform 1, a film clamping mechanism 2, a peeling blade 3, and a pressing mechanism 4; the positioning platform 1 is used to carry a sheet material, the sheet material including a release film and a plurality of adhesive strips attached to the top surface of the release film; the film clamping mechanism 2 is used to clamp the first end of the release film and drive the first end of the release film to move along the X-axis and Z-axis directions; the peeling blade 3 is disposed between the positioning platform 1 and the film clamping mechanism 2, the blade of the peeling blade 3 abuts against the bottom surface of the release film, so as to deform the release film and realize the peeling of the adhesive strips from the release film; the pressing mechanism 4 is used to press and fix the second end of the release film before the first end of the release film held by the film clamping mechanism 2 moves along the Z-axis direction; when the first end of the release film held by the film clamping mechanism 2 moves horizontally along the X-axis direction, the pressing mechanism 4 separates from the second end of the release film, so as to allow the release film to be pulled and peeled by the film clamping mechanism 2.

[0045] Specifically, the X-axis, Y-axis, and Z-axis directions form a spatial rectangular coordinate system. The X-axis is defined as horizontal and parallel to the length of the release film, the Y-axis is defined as horizontal and parallel to the width of the release film, and the Z-axis is defined as vertical and perpendicular to the plane of the release film. The first end of the release film refers to the end of the release film near the clamping mechanism 2 in the X-axis direction, and the second end refers to the opposite end of the release film away from the clamping mechanism 2 in the X-axis direction. The sheet material is a rectangular thin sheet, with the release film serving as a flexible base material. Several adhesive strips are arranged in a matrix with equal or preset spacing and adhered to the top surface of the release film. The adhesive strips are made of pressure-sensitive adhesive or hot-melt adhesive, and the release film material is PET, PP, or PE film. The top surface of the positioning platform 1 is a rectangular plane with a vacuum adsorption area. The vacuum adsorption holes are arranged in a matrix, and negative pressure is generated by a vacuum generator to achieve adsorption and fixation. The clamping mechanism 2 clamps the first end of the release film using pneumatic or electric grippers. The peeling blade 3 is a long, strip-shaped carbide blade with an arc or wedge-shaped cutting edge. It is fixed between the positioning platform 1 and the clamping mechanism 2, with the top edge of the blade higher than the top surface of the positioning platform 1. The length of the peeling blade 3 along the Y-axis is not less than the width of the release film. The pressing mechanism 4 uses a pressing block for holding the release film. The bottom surface of the pressing block has a flexible buffer layer made of silicone or rubber. Before the clamping mechanism 2 lifts the first end of the release film along the Z-axis, the pressing mechanism 4 maintains pressure on the second end of the release film. When the clamping mechanism 2 moves horizontally along the X-axis, the pressing mechanism 4 lifts along the Z-axis and separates from the second end of the release film. The separation gap should be sufficient to avoid interference. This device uses the line contact between the peeling blade 3 and the bottom surface of the release film to cause the release film to arch upwards and undergo elastic deformation. Due to the difference in bending stiffness between the adhesive strip and the release film deformation, peeling stress is generated at the edge, which, combined with the traction of the clamping mechanism 2, separates the adhesive strip from the release film.

[0046] Preferably, the film clamping mechanism 2 includes a support clamping plate 21, a clamping cylinder 23, a drive clamping plate 22, a first X-axis drive assembly 25, and a first Z-axis drive assembly 24. The drive clamping plate 22 is mounted on the output end of the clamping cylinder 23. The clamping cylinder 23 is mounted on the support clamping plate 21 and is used to drive the drive clamping plate 22 to open and close relative to the support clamping plate 21 to clamp the first end of the release film. The output end of the first Z-axis drive assembly 24 is connected to the support clamping plate 21, and the output end of the first X-axis drive assembly 25 is connected to the first Z-axis drive assembly 24.

[0047] Specifically, the clamping cylinder 23 is a double-acting pneumatic finger, which opens and closes via pneumatic drive. The first Z-axis drive assembly 24 consists of a Z-axis servo motor, a Z-axis ball screw pair, and a Z-axis linear guide pair, with the slider bolted to the horizontal part of the support clamping plate 21. The first X-axis drive assembly 25 consists of an X-axis servo motor, an X-axis ball screw pair, and an X-axis linear guide pair, with the slider of the first X-axis drive assembly 25 bolted to the base of the first Z-axis drive assembly 24, forming a two-stage drive structure to achieve composite movement of the clamping assembly in the X and Z axes, with the motion repeatability and positioning accuracy within the required range.

[0048] Preferably, the pressing mechanism 4 includes a pressing module 41, a second Z-axis drive assembly 43, and a second X-axis drive assembly 44. The pressing module 41 is connected to the output end of the second Z-axis drive assembly 43 and is used to press and fix the second end of the release film. The second Z-axis drive assembly 43 is connected to the output end of the second X-axis drive assembly 44. Specifically, the pressing module 41 is a rectangular metal block or a rigid plastic block, with grooves machined on its bottom surface for installing a flexible buffer layer. The second Z-axis drive assembly 43 is a miniature cylinder or a small electric cylinder, with a sufficiently fast response time. The second X-axis drive assembly 44 is a miniature linear slide or an electric cylinder, with the slide bolted to the base of the second Z-axis drive assembly 43. The drive method is a stepper motor or servo motor driving a lead screw and nut pair to achieve position adjustment of the pressing module 41 in the X-axis direction. The pressing module 41 presses and fixes the second end of the release film under the drive of the second Z-axis drive assembly 43. During pressing, the bottom surface of the pressing module 41 is parallel to the top surface of the positioning platform 1. The pressing force is precisely controlled by the air pressure or current adjustment of the second Z-axis drive assembly 43. The second X-axis drive assembly 44 is used to adjust the position of the pressing module 41 relative to the positioning platform 1 when changing different specifications of sheet material.

[0049] More specifically, the output end of the second Z-axis drive assembly 43 is provided with a mounting plate 42, and the pressing module 41 is detachably mounted on the mounting plate 42. It can be understood that the mounting plate 42 at the output end of the second Z-axis drive assembly 43 and the detachable mounting of the pressing module 41 allow the pressing module 41 to be securely connected to the second Z-axis drive assembly 43 via the mounting plate 42. The detachable mounting method facilitates the replacement of pressing modules 41 of different specifications according to the width or material of the second end of the release film, simplifies the maintenance and replacement process, reduces equipment maintenance costs, and improves the compatibility and versatility of the pressing mechanism 4 for various production needs. The mounting plate 42 also enhances the installation stability of the pressing module 41, ensuring uniform force during pressing and avoiding pressing offset or failure.

[0050] Optionally, the bottom surface of the pressing block is provided with a flexible buffer layer. This allows the pressing mechanism 4 to effectively buffer the pressure of the pressing block on the release film and adhesive strip when pressing the second end of the release film, preventing scratches on the release film, damage to the adhesive strip, or deformation caused by rigid contact. Simultaneously, the flexible buffer layer can adapt to minor unevenness on the release film surface, increasing the pressing contact area and improving the stability and reliability of the pressing fixation, thereby better protecting the integrity of the sheet material and ensuring the pressing effect. The flexible buffer layer is made of silicone sheet, rubber sheet, or polyurethane foam sheet with a moderate thickness. The flexible buffer layer is adhered to the groove on the bottom surface of the pressing module 41 using double-sided adhesive or structural adhesive. The adhered area should occupy most of the bottom area of ​​the pressing module 41. After adhesion, it should be left to stand at room temperature for a sufficient time to ensure bonding strength. The surface of the buffer layer can be processed with a grid pattern or hemispherical protrusions to increase the coefficient of friction. When the pressing mechanism 4 presses the second end of the release film, the flexible buffer layer contacts the release film first and generates elastic compression, transforming point contact or line contact into surface contact, so that the pressing force is evenly distributed and the maximum contact stress is within the safe range, thereby avoiding damage to the adhesive strip or release film, and compensating for the parallelism error between the positioning platform 1 and the pressing module 41.

[0051] In this embodiment, a third X-axis drive assembly 31 is also included. The output end of the third X-axis drive assembly 31 is connected to the peeling blade 3 and used to drive the peeling blade 3 to move along the X-axis direction. The third X-axis drive assembly 31 is an independently set miniature linear module or electric cylinder. Its structure includes a drive motor, a ball screw, a linear guide rail, and a slide. The stroke should meet the requirements of the peeling blade 3's movement range, the maximum speed should match the peeling process, and the repeatability positioning accuracy should be within the accuracy requirements. The slide of the third X-axis drive assembly 31 is bolted to the peeling blade 3's blade holder via an L-shaped connecting plate. The third X-axis drive assembly 31 drives the peeling blade 3 to move along the X-axis direction, and the movement direction is opposite to the traction direction of the film clamping mechanism 2. That is, when the film clamping mechanism 2 moves in the positive X-axis direction, the third X-axis drive assembly 31 can drive the peeling blade 3 to retreat in the negative X-axis direction. The retreat speed is an appropriate proportion of the movement speed of the film clamping mechanism 2. The third X-axis drive assembly 31 is driven by an independent servo controller and is connected to the main control system via pulse signals or bus communication to achieve synchronous or asynchronous movement with the film clamping mechanism 2. It is used to dynamically adjust the position of the peeling blade 3 relative to the release film during the peeling process to avoid excessive wear of the blade on the release film in some areas, or to expand the peeling range when peeling wide sheets.

[0052] Preferably, the device further includes a visual inspection device 6 disposed above the peeling blade 3. The visual inspection device 6 is used to identify the position information of the adhesive strip on the release film. Specifically, the visual inspection device 6 includes a CCD camera 61 and a light source assembly 62. The high-resolution imaging capability of the CCD camera 61 is used to accurately capture the contour and position features of the adhesive strip. The light source assembly 62 provides stable and uniform illumination conditions for the CCD camera 61, effectively eliminating reflections from the release film or interference from ambient light, improving image contrast and clarity, and ensuring that the visual recognition algorithm can accurately identify the edge of the adhesive strip. This significantly improves the accuracy and response speed of the visual inspection device 6 in identifying the position of the adhesive strip and enhances the adaptability of the peeling device in complex lighting environments.

[0053] In this embodiment, the positioning platform 1 has a detection hole 11 connecting its top and bottom surfaces. A positioning detection sensor 12 is located directly below the detection hole 11. The positioning detection sensor 12 is electrically connected to the clamping mechanism 2 and the pressing mechanism 4. This connection allows the positioning detection sensor 12 to promptly detect the presence of the sheet material when it is placed on the positioning platform 1 through the detection hole 11, and feeds the positioning signal back to the control systems of the clamping mechanism 2 and the pressing mechanism 4. This ensures that the peeling device will only initiate subsequent actions after the sheet material is accurately positioned, avoiding energy consumption caused by the mechanism running idle in a material-free state. To reduce waste and mechanical wear, the interconnected structure of the detection holes 11 enables non-contact detection of the sheet material, improving detection sensitivity and the safety of the system's automated control. Specifically, the number of detection holes 11 and the number of position detection sensors 12 are at least two. This multi-point detection layout avoids false detection problems caused by partial obstruction of the sheet material or failure of a single sensor. At least two position detection sensors 12 can work together to determine the overall position status of the sheet material, improving the reliability and fault tolerance of the detection results. The system only determines that the sheet material is in place when all sensors detect it, thereby effectively preventing peeling failure or equipment malfunction caused by misjudgment and enhancing the stability and safety of the peeling device.

[0054] In detail, the positioning detection sensor 12 adopts a through-beam photoelectric sensor or a reflective photoelectric sensor. The transmitting and receiving ends of the through-beam sensor are respectively installed on the upper and lower sides of the detection hole 11, with a moderate detection distance and a sufficiently fast response time. The reflective sensor is installed directly below the detection hole 11 and determines the positioning status by detecting changes in the intensity of reflected light from the sheet. The positioning detection sensor 12 outputs a switch signal, and the signal line is connected to the digital input module of the PLC. The electrical connection refers to the connection between the sensor and the control system of the clamping mechanism 2 and the pressing mechanism 4 through I / O signal lines or fieldbus, realizing the interlocking control of the sensor signals on the actions of the clamping mechanism 2 and the pressing mechanism 4. That is, the control system only allows the clamping mechanism 2 and the pressing mechanism 4 to start when all positioning detection sensors 12 have detected the sheet.

[0055] More specifically, when the number of detection holes 11 and positioning detection sensors 12 is at least two, preferably multiple, arranged in a triangular layout on the left, right, and center of the positioning platform 1, or in a rectangular four-corner layout. The positioning detection sensors 12 are interlocked using a logical AND relationship; that is, the control system only determines that the sheet material has been correctly placed and is not tilted or missing when all sensors simultaneously output positioning signals. The sensor mounting brackets have height and angle adjustment functions to ensure that the emitting optical axis or detection area is aligned with the center of the detection hole 11. The multiple sensors can detect the tilt or partial suspension of the sheet material. When any sensor fails to detect the sheet material, the control system triggers an alarm and prohibits subsequent actions, thereby avoiding problems such as clamping failure of the film clamping mechanism 2, scratching of the release film by the peeling knife 3, or displacement of the adhesive strip peeling position caused by improper sheet material placement.

[0056] In summary, the adhesive strip peeling device for the display screen frame provided by this invention uses a positioning platform to carry a sheet containing a release film and several adhesive strips attached to its top surface. A clamping mechanism holds the first end of the release film and moves it along the X-axis and Z-axis. A peeling blade is positioned between the positioning platform and the clamping mechanism, and its blade abuts against the bottom surface of the release film, causing deformation of the release film to achieve peeling of the adhesive strips from the release film. Before the clamping mechanism moves the first end of the release film along the Z-axis, a pressing mechanism presses and fixes the second end of the release film. When the clamping mechanism moves horizontally along the X-axis, the pressing mechanism separates from the second end of the release film to allow the release film to be peeled off by the clamping mechanism. Thus, the deformation caused by the peeling blade abutting, combined with the sequential pressing and releasing of the two ends of the release film by the pressing mechanism, achieves reliable separation of the adhesive strips from the release film, avoiding the problems of incomplete peeling and adhesive strip deformation caused by traditional suction cup contact with the adhesive strip, improving the peeling success rate and work efficiency, while protecting the integrity of the adhesive strips.

[0057] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A device for stripping adhesive tape from a frame of a display screen, characterized in that Comprising a positioning platform for carrying a sheet material, the sheet material comprising a release film and a plurality of adhesive strips attached to a top surface of the release film; a film clamping mechanism for clamping a first end of the release film and moving the first end of the release film along an X-axis direction and a Z-axis direction; a stripping knife arranged between the positioning platform and the film clamping mechanism, a blade of the stripping knife being in contact with a bottom surface of the release film to cause the release film to deform and achieve peeling of the adhesive strips from the release film; a film pressing mechanism for pressing and fixing a second end of the release film before the film clamping mechanism moves the first end of the release film along the Z-axis direction; when the film clamping mechanism moves the first end of the release film horizontally along the X-axis direction, the film pressing mechanism is separated from the second end of the release film to allow the release film to be peeled by the film clamping mechanism.

2. The adhesive tape stripping device for display screen middle frame according to claim 1, characterized in that, The film clamping mechanism comprises a support clamping plate, a clamping cylinder, a driving clamping plate, a first X-axis driving assembly and a first Z-axis driving assembly, the driving clamping plate is installed on an output end of the clamping cylinder, the clamping cylinder is installed on the support clamping plate and is used to drive the driving clamping plate to open and close relative to the support clamping plate to clamp the first end of the release film, an output end of the first Z-axis driving assembly is connected to the support clamping plate, and an output end of the first X-axis driving assembly is connected to the first Z-axis driving assembly.

3. The adhesive tape stripping device for display screen middle frame according to claim 1, characterized in that, The film pressing mechanism comprises a pressing module, a second Z-axis driving assembly and a second X-axis driving assembly, the pressing module is connected to an output end of the second Z-axis driving assembly and is used to press and fix the second end of the release film, and an output end of the second Z-axis driving assembly is connected to the second X-axis driving assembly.

4. The adhesive tape stripping device for display screen middle frame according to claim 3, characterized in that, An output end of the second Z-axis driving assembly is provided with a mounting plate, and the pressing module is detachably installed on the mounting plate.

5. The adhesive strip peeling apparatus for a display screen middle frame according to claim 3 or 4, wherein A bottom surface of the pressing block is provided with a flexible buffer layer.

6. The adhesive strip stripping device for display screen middle frame according to claim 1, characterized in that, A third X-axis driving assembly is further included, an output end of the third X-axis driving assembly is connected to the stripping knife and is used to drive the stripping knife to move along the X-axis direction.

7. The adhesive strip stripping device for display screen middle frame according to claim 1, characterized in that, A visual detection device arranged above the stripping knife is further included, the visual detection device is used to identify position information of the adhesive strips on the release film.

8. The adhesive strip stripping device for display screen middle frame according to claim 7, characterized in that, The visual detection device comprises a CCD camera and a light source assembly.

9. The adhesive strip stripping device for display screen middle frame according to claim 1, characterized in that, The positioning platform is provided with detection holes communicating between a top surface and a bottom surface thereof, a position detection sensor is arranged directly below the detection holes, and the position detection sensor is electrically connected with the film clamping mechanism and the film pressing mechanism.

10. The adhesive strip stripping device for display screen middle frame according to claim 9, characterized in that, The number of the detection holes and the number of the position detection sensors are at least two.

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