Low-loss corner lifting, motion tearing and cooperative film tearing process of screen display glass protective film

Abstract

The low-damage corner lifting, motion tearing and cooperative film tearing process of the screen display glass protective film of the present application comprises the following steps: S1, A-face film tearing; S2, screen display glass transfer; and S3, B-face film tearing. In one aspect, in single-face film tearing, the cooperation of the film tearing clamps, rollers and air nozzles is formed to keep the adhesive force of the film tearing angle greater than the protective film tearing force to complete the corner lifting, reduce the damage and fracture rate of the adhesive tape and the corner, and have a high corner lifting success rate. In combination with the motion cooperation of the screen display glass and the film tearing clamps, the film tearing difficulty is low and easy to control, and the integrity and continuity of the film tearing are high. In another aspect, in double-face film tearing, the screen display glass does not need to be flipped, and the screen display glass transfer is realized simultaneously in the protective film tearing process. Not only is the accidental rubbing rate in the glass flipping reduced, but also the structure is optimized to greatly reduce the layout space, the equipment is miniaturized, and the double-face film tearing efficiency of the equipment for processing the screen display glass is improved.

Description

Technical Field

[0001] This invention belongs to the field of display technology, specifically relating to a low-damage, corner-lifting, motion-based tearing process for a protective film on display glass. Background Technology

[0002] A display screen typically consists of multiple functional layers and a liquid crystal display panel. The liquid crystal display panel is based on glass as a carrier for assembling other components. That is, the protective film (front and back) needs to be removed from the glass before assembly.

[0003] Currently, the steps for removing the single-sided protective film are as follows:

[0004] S1, Lifting Corner

[0005] Adhesive tape is used to adhere to a corner of the glass protective film. Then, the adhesive tape is held by the adhesive tape and moved relative to the glass so that the adhesive tape causes the protective film to lift up from the corner to form a raised corner.

[0006] S2, Tear off

[0007] Then, based on the tearing claws moving relatively away from the glass and diagonally towards the corner, the protective film is gradually torn off the glass surface;

[0008] S3, Film closing

[0009] The protective film is held by a film-collecting gripper, and the film-tearing gripper works in conjunction with the film-collecting gripper to release the film-tearing tape from the film-tearing gripper. The protective film is then released into the film-collecting frame as the film-collecting gripper releases.

[0010] However, due to the flipping of the display glass, the protective films on the front and back are peeled off sequentially. Therefore, the above-mentioned film peeling process has the following technical defects:

[0011] 1) For single-sided tear film, during the process of forming the tear angle, when the interfacial adhesion between the tear film tape and the protective film is less than the peeling force required to lift the corner, the accidental breakage or detachment of the tear film tape will not only increase the interruption or failure rate of the protective film lifting corner, but also increase the difficulty and loss of tearing film. During the tearing process, the tearing force is indirectly transmitted to the protective film through the tear film tape by the tear film claws. Once the tearing force is insufficient or excessive, it will not only increase the accidental breakage or detachment rate of the tear film tape, but also the interruption rate or wrinkling rate of the protective film will directly affect the integrity and continuity of tearing film.

[0012] 2) Regarding the film tearing and reversing, the glass flipping method used not only increases the accidental collision rate of the glass, but also requires movement space and corresponding equipment structure, resulting in a complex film tearing equipment structure, large space occupation, and is not conducive to transmission. Summary of the Invention

[0013] The purpose of this invention is to overcome the shortcomings of the prior art and provide an improved low-damage, angle-lifting, motion-based tearing process for screen display glass protective films.

[0014] To achieve the above objectives, the present invention employs the following solution: a low-damage, corner-lifting, motion-based peeling process for screen display glass protective film, comprising the following steps:

[0015] S1, A-side tear film, which uses an A-side tear film structure that sequentially lifts the corner and tears off;

[0016] S2, Display glass re-installation;

[0017] S3, B-side tear film, its B-side tear film structure sequentially lifts the corner and tears off, in particular,

[0018] In step S1, the corner lifting process begins with the following steps: First, an adsorption platform is used to suction the A-side film downwards and transfer it to the A-side film peeling area. The self-adhesive section of the peeling tape is then attached to the corner of the A-side film, and simultaneously, the peeling tape extends outwards from the corner to form an extended section. Second, peeling claws hold the end of the extended section, which consists of a holding part and a connecting part. The peeling claws then invert to gradually increase the angle between the connecting part and the display glass, and rollers roll over the adhesive section to prepare for peeling. Finally, under the inverting and inward movement of the peeling claws, the rollers... The rollers move synchronously with the tear-off grippers and lift upwards to maintain the same rolling contact position and corner tear-off position, gradually turning inwards. At the same time, the airflow inside the tear-off grippers blows along the connecting part towards the display glass and is refracted to cooperate between the A-film and the display glass for tearing, until the gripping position of the tear-off tape is inside the tear-off position of the A-film, completing the corner lifting of the A-film. During tearing, the adsorption platform and the tear-off grippers move relative to each other, and the tear-off grippers move diagonally to the opposite corner to tear the A-film away from the display glass.

[0019] In step S2, a horizontal moving track and a horizontal moving platform are used to dock the display glass with the A film removed to the horizontal moving platform. The display glass enters the B film removal area along the horizontal moving track with the B film facing upward.

[0020] The tear-off structure on side B is the same as that on side A, but the layout is reversed. At the same time, the corner lifting and tearing of side B are completed sequentially using the same steps as in S1.

[0021] Preferably, when preparing to peel off the film, the connecting part is tangent to the roller, and the angle between the connecting part and the display glass is acute. Based on the counter-pressure formed by the roller, the inward turning of the connecting part is avoided, which would cause the corner and adhesive section to be stretched, thus improving the success rate of peeling off the corner.

[0022] Furthermore, during the process of the connecting part moving to complete the film-tearing preparation, the adhesive section is in a state of no stress. This ensures that the stress position of the adhesive section and the corner tearing position are the same, and also avoids the adhesive section peeling off due to the film not being removed.

[0023] According to a specific embodiment and preferred aspect of the present invention, when the corner is lifted, the angle formed between the connecting portion and the display glass is an obtuse angle. This resulting tear-off angle is more conducive to the removal of the protective film.

[0024] According to a specific embodiment and preferred aspect of the present invention, during corner lifting, the rollers maintain equal rolling pressure on the adhesive section surface. Based on the uniform rolling force, the contact and tearing positions are smoothly synchronized, preventing accidental detachment or breakage of the adhesive tape and improving the success rate of corner lifting.

[0025] Preferably, the roller surface covers the entire adhesive section. This ensures that the rolling pressure is fully applied to the adhesive section and that the adhesive section more evenly drives the corner to complete the corner-lifting action.

[0026] Furthermore, during the tearing process, the roller detaches from the display glass, and the airflow inside the tearing gripper stops blowing. Based on the successful corner lifting, neither airflow blowing nor roller coordination is required; the tearing can be achieved simply by pulling the corner, which not only simplifies the process but also reduces interference from external factors, thereby increasing the integrity of the protective film tearing.

[0027] According to another specific embodiment and preferred aspect of the invention, with the assistance of the airflow channel formed by the clamping surfaces of the film-tearing claws, the airflow entering the airflow channel purifies and assists in lifting the corner. This airflow cooperation not only facilitates the removal of the corner but also further reduces the damage or breakage rate of the film-tearing tape and the corner.

[0028] Preferably, a groove is formed on the clamping surface that is recessed inward from the surface. The clamping part closes the groove and leaves the port open to form an airflow channel. Based on the airflow guidance formed by the airflow channel, a tearing cooperation of the lifting corner is formed.

[0029] According to another specific embodiment and preferred aspect of the present invention, in the tearing process of step S1, the angle formed between the inwardly folded corner and the A-face mask is the tearing angle. Maintaining the tearing angle at an acute angle, the mask is torn diagonally in a manner that the tearing angle remains constant, gradually increases, or gradually decreases. Regardless of whether the angle is constant or changing, it can be implemented as long as it is within the corresponding tearing angle range. However, essentially, the smaller the tearing angle, the easier (and less strenuous) the tearing.

[0030] Preferably, the adsorption platform moves along the transverse track to peel off the A-side film using the coordinated action of the film-peeling grippers. Based on the movement of the adsorption platform, not only is the film-peeling difficulty reduced, but the display glass can also be transversely transferred to the next workstation, achieving convenient transfer between the A and B-side protective films. This requires minimal space, has a simple structure, and also avoids external damage to the display glass during flipping.

[0031] In some specific embodiments, the length of the extension segment is greater than the length of the adhesive segment, and the length of the clamping portion is greater than the length of the connecting portion. This arrangement of different lengths not only meets the tearing angle requirements when lifting corners but also more effectively reduces the breakage rate of corners and the tear film tape.

[0032] Preferably, in step S1, during the corner lifting, the adhesive segment adheres to the corner of the A-film along the diagonal direction of the display glass, and the extended segment extends outward along the length of the adhesive segment. Based on the diagonal adhesion and the inward flipping of the corner towards the diagonal, not only is the resulting tearing force relatively uniform, but the protective film can also be peeled off more effortlessly and completely.

[0033] According to another specific embodiment and preferred aspect of the present invention, the A-side tear-off structure includes an A-side lifting corner unit and an A-side tear-off unit. The A-side lifting corner unit includes an A-base, tear-off grippers, a roller cooperative group, and an air nozzle cooperative group. The A-base includes a movable base and a flipping base, and the tear-off grippers, roller cooperative group, and air nozzle cooperative group are disposed on the flipping base. The A-side tear-off unit includes an adsorption platform, a first power member that drives the movable base to move in the XYZ three-axis coordinate system, and a second power member that drives the adsorption platform to move cooperatively.

[0034] During corner lifting, the success rate of corner lifting is significantly improved due to the coordinated action of the inward turning and movement of the tearing claws, the synchronous inward movement of the rollers along with the tearing claws, the rollers' own lifting motion to compensate for the gap, and the blowing air from the nozzles. This also reduces the tearing tape and corner breakage rates. During tearing, the tearing claws move diagonally, and the lateral movement of the display glass cooperates to create a relative tearing motion that removes the protective film from side A.

[0035] Preferably, the roller assembly includes a roller mounted on a wheel seat and a telescopic cylinder that drives the wheel seat to rise and fall. While ensuring synchronous movement of the rollers, the assembly itself maintains continuous rolling pressure based on the moving parts of the telescopic cylinder.

[0036] In some specific embodiments, the film-tearing gripper includes a gripping head and a power unit. The gripping head includes a first gripping arm and a second gripping arm, with the gripping surfaces of the first and second gripping arms fitting together for gripping. The air nozzle coordination assembly includes an air nozzle located between the first and second gripping arms and facing the gripping surface, and an air supply component. An airflow groove is formed on the gripping surface, and the airflow ejected from the air nozzle blows along the airflow groove towards the display glass to form a blow-through coordinated tearing action. Further designing the airflow groove on the gripping surface of the gripping head not only does not affect the gripping performance of the gripping head, but also provides conditions for airflow blowing.

[0037] In addition, regarding airflow purging, during the film removal process of peeling off the protective film, airflow can be used to purge the loosened clamping head, blowing the film-peeling tape and the clamping head away from each other, thereby assisting the film-retrieving action.

[0038] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0039] In the existing double-sided (A, B) protective film removal process for display glass, for single-sided film removal, during the formation of the tear angle, if the interfacial adhesion between the film-tearing tape and the protective film is less than the peeling force required to lift the corner, the film-tearing tape may accidentally break or detach. This not only increases the rate of interruption or failure of the protective film lifting corner but also increases the difficulty and waste of film removal. During the removal process, the peeling force is indirectly transferred to the protective film through the film-tearing tape by the film-tearing claws. If the peeling force is insufficient or excessive, it not only increases the rate of accidental breakage or detachment of the film-tearing tape but also directly affects the integrity and continuity of film removal due to the interruption rate or wrinkling rate of the protective film. In addition, for film removal reversal, the glass flipping method used not only increases the risk of accidental glass collisions. The existing technology suffers from several drawbacks, including high efficiency, the need for movement space and corresponding equipment structure for flipping, resulting in complex and space-consuming tearing equipment that is also unfavorable for transmission. This invention, based on a low-loss corner-lifting and motion-tear coordinated tearing process for screen display glass protective film, cleverly solves these shortcomings. Using this tearing process, firstly, an adsorption platform is used to suction the film (A-side) downwards and transfer it to the A-side tearing area. The self-adhesive section of the tearing tape is attached to the corner of the A-side film, while simultaneously extending the tape outwards from the corner to form an extension section. Next, tearing claws hold the end of the extension section, which is divided into a holding part and a connecting part. Simultaneously, the tearing claws flip inwards to gradually increase the angle between the connecting part and the screen display glass. The rollers press against the adhesive section to prepare for film removal. Then, under the inward and outward movement of the film-removing grippers, the rollers move synchronously with the grippers and rise upwards, maintaining a gradual inward turning where the roller pressing contact position and the corner tearing position are the same. Simultaneously, airflow inside the grippers blows along the connecting part towards the display glass and refracts to cooperate in flipping and tearing the film A between the film A and the display glass until the gripping position of the film-removing tape is inside the tearing position of the film A, completing the corner lifting of the film A. Next, based on the relative movement of the adsorption platform and the film-removing grippers, and the movement of the grippers diagonally opposite the lifting corner, the film A is torn off the display glass. Finally, using a horizontal track and a horizontal platform, the display glass with the film A removed is placed... Upon reaching the horizontal moving platform, the display glass enters the B-side tearing area along the horizontal moving track with the B-side film facing upwards. Finally, using the same B-side tearing structure as the A-side tearing structure but with an inverted layout, the corner lifting and tearing of the B-side are completed sequentially. Therefore, compared with the prior art, this invention, on the one hand, in the single-sided tearing process, forms a multi-motion collaboration based on the tearing gripper, roller, and air nozzle, maintaining the tearing angle adhesive force greater than the protective film tearing force to complete the corner lifting, reducing the damage and breakage rate of the tearing tape and protective film corners, and has a high corner lifting success rate. At the same time, combined with the relative motion collaboration of the display glass and the tearing gripper, the protective film is torn off from the corner to the diagonal, which not only makes the tearing process easier and more controllable, but also ensures high integrity and continuity of the tearing process.On the other hand, double-sided film removal eliminates the need for flipping the display glass. The display glass is simultaneously flipped during the film removal process, reducing the risk of accidental scratches during glass flipping. Furthermore, the optimized structure significantly reduces the required layout space, resulting in smaller equipment and improved efficiency in handling double-sided film removal of display glass. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the film-tearing device structure in this embodiment;

[0041] Figure 2 for Figure 1 A top-down view;

[0042] Figure 3 for Figure 1 A schematic diagram of the tear-off film structure on side A;

[0043] Figure 4 for Figure 3 Simplified structural diagram;

[0044] Figure 5 for Figure 4 Schematic diagram of the structure of the A-side corner unit;

[0045] Figure 6 for Figure 5 A schematic diagram of the initial state of the center lift angle;

[0046] Figure 7 for Figure 5 A schematic diagram of the mid-section of the lifting angle;

[0047] Figure 8 for Figure 5 A schematic diagram showing the state in which the corner is formed;

[0048] Figure 9 for Figure 1 A schematic diagram of the tear-off structure on side B in the flipped-off position;

[0049] Figure 10 for Figure 9 A diagram illustrating the state of being torn apart;

[0050] Among them: ①, A-side tearing structure; 1, A-side lifting corner unit; 10, A-base; 100, movable base; 101, flipping base; 11, tearing gripper; 110, gripper head; j1, first gripper arm; j2, second gripper arm; s, gripping surface; q, airflow groove; 111, power unit; 12, roller cooperation group; 120, wheel base; 121, roller; 122, telescopic cylinder; 13, air nozzle cooperation group; 130, air nozzle; 2, A-side tearing unit; 20, adsorption platform; 21, first power component; 22, second power component;

[0051] ② Transfer structure; 3. Horizontal movement track; 4. Horizontal movement platform;

[0052] ③, B-side tear-off film structure;

[0053] B. Display glass; D. Adhesive tape; d1. Adhesive section; d2. Clamping part; d3. Connecting part. Detailed Implementation

[0054] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0055] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0059] like Figures 1 to 10 As shown, the low-damage corner-lifting and motion-tear-coordinated film-tearing process for the screen display glass protective film in this embodiment uses film-tearing equipment including A-side film-tearing structure ①, transfer structure ②, and B-side film-tearing structure ③.

[0060] Specifically, the A-side tear-off structure ① includes A-side lifting corner unit 1 and A-side tear-off unit 2.

[0061] In some specific embodiments, the A-side corner-lifting unit 1 includes an A-base 10, a film-tearing gripper 11, a roller cooperative group 12, and an air nozzle cooperative group 13. The A-base 10 includes a movable base 100 and a flipping base 101, and the film-tearing gripper 11, roller cooperative group 12, and air nozzle cooperative group 13 are disposed on the flipping base 101. The A-side tearing unit 2 includes an adsorption platform 20, a first power member 21 that drives the movable base to move in the XYZ three-axis coordinate system, and a second power member 22 that drives the adsorption platform 20 to move cooperatively.

[0062] In this example, the film-tearing gripper 11 includes a gripping head 110 and a power unit 111. The gripping head 110 includes a first gripping arm j1 and a second gripping arm j2, and the gripping surfaces of the first gripping arm j1 and the second gripping arm j2 are in close contact for gripping. The roller cooperation group 12 includes a roller 121 that is rotatably mounted on a wheel seat 120 and a telescopic cylinder 122 that drives the wheel seat 120 to rise and fall. While ensuring synchronous movement of the rollers, the roller itself maintains continuous rolling pressure based on the moving part of the telescopic cylinder. The air nozzle cooperation group 13 includes an air nozzle 130 located between the first gripping arm j1 and the second gripping arm j2 and facing the gripping surface, and an air supply component. An airflow groove q is formed on the gripping surface s. The airflow ejected from the air nozzle 130 blows along the airflow groove q toward the display glass B to form a blow-through cooperative tearing. That is, the airflow groove is further planned on the gripping surface of the gripping head, which not only does not affect the gripping performance of the gripping head, but also provides conditions for airflow blowing. Meanwhile, the adsorption platform 20 adopts conventional negative pressure adsorption and has multiple adsorption heads. It is simultaneously adsorbed onto the protective film on the B side of the display glass B. The first power component 21 uses linear motion in the XYZ three-axis direction to realize the tearing motion of the film tearing claw 11. The second power component 22 moves based on the XZ axis direction to drive the display glass B to generate relative motion tearing relative to the film tearing claw 11. In this example, the X-axis direction is the lateral movement direction of the transfer structure ②. That is to say, when the display glass B is tearing relative to the film tearing claw 11, the transfer of the display glass B is also carried out simultaneously.

[0063] The transfer structure ② includes a horizontal track 3 and a horizontal platform 4. The horizontal track 3 extends along the X-axis, and the horizontal platform 4 moves on the horizontal track 3. The horizontal platform 4 is equipped with multiple negative pressure adsorption heads. When the display glass B moves above the horizontal platform 4, it is adsorbed onto the A side of the display glass B by the upward-facing negative pressure adsorption heads. At the same time, the display glass B is transferred from the B side protective film facing upward to the B side film peeling area.

[0064] B-side tear-off structure ③ has the same structure as A-side tear-off structure ①, but the layout is reversed. In short, A-side tear-off structure ① peels off the A-side protective film from the bottom surface of the display glass B, while B-side tear-off structure ③ peels off the B-side protective film from the top surface of the display glass B. At the same time, the tearing principle of the two is the same.

[0065] In this example, the low-damage corner-lifting and motion-based tear-off process for the screen display glass protective film includes the following steps:

[0066] S1, A-side peel film

[0067] 1) Lifting corner

[0068] First, the adsorption platform 20 is used to suction the display glass B, with the A-side film facing down, and transfer it to the A-side film-removing area. The self-adhesive segment d1 of the film-removing tape D is adhered to the corner of the A-side film along the diagonal direction of the display glass B. Simultaneously, the film-removing tape D extends outward from the corner along the length of the adhesive segment d1 to form an extended segment. Second, the film-removing claw 11 clamps the end of the extended segment. The extended segment is divided into a clamping part d2 and a connecting part d3. Simultaneously, the film-removing claw 11 is turned downwards and inwards so that the angle between the connecting part d3 and the display glass B gradually increases, and then... Roller 121 rolls on adhesive section d1 to prepare for film removal; finally, under the inward turning and inward movement of film removal gripper 11, roller 121 moves synchronously with film removal gripper 11 and lifts upward to maintain the roller 121 rolling contact position and corner inward turning tearing position at the same time, based on the airflow inside film removal gripper 11 blowing along the connecting part to the display glass and refracting to cooperate between film A and display glass B to flip and tear apart, until the clamping position of film removal tape D is located inside the tearing position of film A, completing the corner lifting of film A;

[0069] 2) Tear off

[0070] Based on the movement of the adsorption platform 20 along the X-axis (or the length direction of the transverse track 3), and based on the tearing gripper 11 maintaining the gripping position of the tearing tape D inside the tearing position of the A film to form an acute tearing angle, it moves along the XYZ or XY direction, while the tearing gripper 11 moves diagonally to the opposite side of the lifting angle to tear the A film from the display glass B.

[0071] S2, Display Glass Reprint

[0072] Using the horizontal moving track 3 and the horizontal moving platform 4, the screen display glass B with the A-side film removed is docked to the horizontal moving platform 4. Then, the negative pressure adsorption head based on the horizontal moving platform 4 is adsorbed on the A-side of the screen display glass B, and at the same time, the screen display glass B is sent into the B-side film removal area with the B-side protective film facing upward.

[0073] S3, B-side peel film

[0074] 1) Lifting corner

[0075] First, the self-adhesive section of the film-removing tape is attached to the corner of the mask, while the film-removing tape extends outward from the corner to form an extension section. Second, the end of the extension section is held by film-removing claws. The extension section is divided into a holding part and a connecting part. At the same time, the film-removing claws flip upward and inward so that the angle between the connecting part and the display glass gradually increases. Rollers roll on the adhesive section to prepare for film removal. Finally, under the inward flipping and inward movement of the film-removing claws, the rollers move synchronously with the film-removing claws and move downward to maintain the rollers rolling and contacting the corner inward flipping and tearing position at the same time. At the same time, the airflow inside the film-removing claws blows along the connecting part to the display glass and is refracted to cooperate between the B-mask and the display glass to flip and tear it apart until the holding position of the film-removing tape is inside the tearing position of the B-mask, completing the corner of the B-mask.

[0076] 2) Tear off

[0077] Based on the movement of the transverse platform 4 along the X-axis (or the length direction of the transverse track 3), and based on the tearing gripper maintaining the gripping position of the tearing tape inside the tearing position of the B film to form an acute tearing angle, it moves along the XYZ or XY direction, while the tearing gripper moves diagonally to the opposite side of the lifting angle to tear the B film from the display glass B.

[0078] In some specific implementations, regarding tearing the film from side A (or side B), the specifics are as follows:

[0079] When preparing to peel off the protective film, the connecting part d3 is tangent to the roller 121, and the angle between the connecting part d3 and the display glass B is acute. Based on the contact and pressure formed by the roller, the inward turning of the connecting part prevents the corner and adhesive section from being stretched, thus improving the success rate of corner peeling. Simultaneously, during the process of the connecting part d3 moving to complete the preparation for peeling off the protective film, the adhesive section d1 is in a stress-free state. This provides conditions for the stress position of the adhesive section and the corner peeling position to be the same; it also avoids the adhesive section peeling off due to the film not being removed. When the corner is peeled off, the angle between the connecting part d3 and the display glass B is obtuse. The peeling angle formed at this time is more conducive to the peeling off of the protective film.

[0080] During corner lifting, rollers 121 maintain equal rolling pressure on the adhesive section surface. Based on the uniform rolling force, the contact and tearing positions are smoothly synchronized, preventing accidental detachment or breakage of the adhesive tape and improving the success rate of corner lifting. The wheel surface of rollers 121 covers the entire adhesive section d1. This ensures complete coverage of the rolling pressure on the adhesive section and allows the adhesive section to more evenly drive the corner to complete the lifting action. Simultaneously, an airflow channel is formed by airflow grooves q. With the assistance of the airflow channel formed by the clamping surfaces of the tearing grippers 11, the airflow entering the airflow channel sweeps and assists in corner lifting. This airflow cooperation not only facilitates corner removal but also further reduces the damage or breakage rate of the tearing tape and the corner. Therefore, based on the inward turning and inward movement of the tearing gripper 11, the synchronous inward movement of the roller 121 with the tearing gripper 11 and its own lifting motion to fill the gap, and the blowing airflow ejected from the air nozzle 130, the success rate of the resulting corner lifting is greatly improved, and the tearing tape and corner tearing rate are reduced.

[0081] During the tearing process, the roller 121 detaches from the display glass B, and the airflow inside the tearing gripper 11 stops blowing. Based on the successful lifting of the corner, the cooperation of airflow blowing and roller is not required; the tearing can be achieved simply by pulling the lifting corner. This not only simplifies the process but also reduces interference from external factors, thereby increasing the integrity of the protective film tearing.

[0082] Furthermore, the angle formed between the inward-folding corner and the A-side film is the tear-off angle. Maintaining an acute tear-off angle, the film is torn diagonally by either keeping the tear-off angle constant, gradually increasing, or gradually decreasing. Regardless of whether the angle is constant or changing, it can be performed as long as it falls within the corresponding tear-off angle range. However, essentially, a smaller tear-off angle makes tearing easier (and less strenuous). The adsorption platform 20 moves along the transverse track 3 to cooperate with the tear-off gripper 11 in tearing the A-side film. Based on the movement of the adsorption platform, not only is the tear-off difficulty reduced, but the display glass can also be transversely transferred to the next workstation, achieving convenient transfer of the A and B-side protective films. This requires less space, has a simpler structure, and also avoids external damage to the display glass during the flipping process. The length of the extension section is greater than the length of the adhesive section d1, and the length of the clamping part d2 is greater than the length of the connecting part d3. The varying lengths of the adhesive strip not only meet the tearing angle requirements during corner lifting but also effectively reduce the breakage rate of corners and the adhesive tape. The adhesive segment d1 adheres to the corner of the A-film along the diagonal direction of the display glass B, while the extended segment extends outward along the length of the adhesive segment d1. Based on the diagonal attachment and the inward folding of the corner towards the diagonal, the resulting tearing force is relatively uniform, and the protective film is removed more effortlessly and completely. Finally, regarding airflow purging, during the removal of the protective film, airflow can be used to purge the released clamping head 110, blowing the adhesive tape D and the clamping head 110 away relative to each other, thereby assisting in the film collection action.

[0083] In summary, using this film-peeling process, firstly, an adsorption platform is used to suction the film (A-side) downwards and transfer it to the film-peeling area. The adhesive section of the film-peeling tape is attached to the corner of the film (A-side), and simultaneously, the tape extends outwards from the corner to form an extended section. Next, film-peeling claws hold the end of the extended section, which is divided into a holding part and a connecting part. Simultaneously, the film-peeling claws flip inwards to gradually increase the angle between the connecting part and the display glass. A roller then rolls on the adhesive section to prepare for film peeling. Then, under the inward flipping and moving movement of the film-peeling claws, the roller moves synchronously with the claws and lifts upwards, maintaining the roller's rolling contact position and the corner's inward peeling position at the same progressive inward movement. The process begins with flipping the film, simultaneously using airflow from the tearing grippers along the connecting section towards the display glass and refracting it to facilitate the collaborative flipping and tearing of the A-side film and the display glass until the gripping position of the tearing tape is inside the tearing position of the A-side film, completing the lifting of the corner of the A-side film. Next, based on the relative movement of the adsorption platform and the tearing grippers, with the tearing grippers moving diagonally opposite the lifting corner, the A-side film is torn away from the display glass. Then, using a horizontal track and platform, the display glass with the A-side film removed is docked to the horizontal track, and the display glass enters the B-side tearing area from the B-side film facing upwards along the horizontal track. Finally, using the same B-side tearing structure as the A-side tearing structure but with an inverted top-to-bottom layout, the film is then... The corner lifting and tearing of side B is completed in one step. Therefore, compared with the prior art, this invention has the following advantages: First, in the single-sided film tearing process, the film-tearing claw, roller, and air nozzle form a multi-motion cooperation to maintain the adhesive force at the tearing angle greater than the tearing force of the protective film, thus completing the corner lifting and reducing the damage and breakage rate of the film-tearing tape and protective film corners, resulting in a higher corner lifting success rate. At the same time, the relative motion cooperation between the display glass and the film-tearing claw allows for tearing the protective film from the corner to the opposite corner, which not only reduces the difficulty of film tearing and makes it easy to control, but also ensures high integrity and continuity of film tearing. Second, in the double-sided film tearing process, there is no need to flip the display glass. The display glass is flipped simultaneously during the protective film tearing process, which not only... The system reduces the accidental scratch rate during glass flipping and optimizes the structure to significantly reduce the layout space, making the equipment smaller and improving the efficiency of the equipment in handling double-sided film removal of display glass. Thirdly, when preparing to remove the film, the connecting part is tangent to the roller, and the angle between the connecting part and the display glass is acute. Based on the contact and pressing formed by the roller, the inward flipping of the connecting part is avoided, which causes the corner and adhesive section to be subjected to force and pulling, thus improving the success rate of corner lifting. At the same time, during the process of the connecting part moving to complete the film removal preparation, the adhesive section is in a state of no force. This not only provides the conditions for the force position of the adhesive section and the corner tearing position to be the same, but also avoids the peeling of the adhesive section due to the film not being removed.Fourthly, during corner lifting, the rollers maintain equal rolling pressure on the adhesive section surface. Based on this uniform rolling force, the contact and tearing positions are synchronized smoothly, preventing accidental detachment or breakage of the adhesive tape and improving the success rate of corner lifting. Simultaneously, the roller surface covers the entire adhesive section, ensuring complete coverage of the rolling pressure and allowing the adhesive section to more evenly drive the corner lifting action. Furthermore, the adhesive section adheres to the corner of the A-side film along the diagonal direction of the display glass, and the extended section extends outward along the length of the adhesive section. Based on diagonal attachment and inward folding from corner to diagonal, the resulting tearing force is relatively uniform, and the protective film is removed more effortlessly and completely. Furthermore, the inward folding and movement of the tearing claws, the synchronous inward movement of the rollers with the tearing claws, their own lifting motion for positioning, and the blowing air from the nozzles work together to significantly improve the success rate of corner removal and reduce the tearing tape and corner tearing rates. Fifthly, when removing the corner, the angle between the connecting part and the display glass is obtuse. This tearing angle is more conducive to removing the protective film. Sixthly, during tearing, the rollers detach from the display glass, and the airflow inside the tearing claws stops blowing. Based on the successful corner-lifting action, the coordination of airflow purging and rollers is unnecessary; the protective film can be torn off directly by pulling the corner-lifting motion. This not only simplifies the process but also reduces interference from external factors, increasing the integrity of the protective film removal. Therefore, the protective film is torn off by the coordination of the diagonal movement of the tearing gripper and the lateral movement of the display glass, forming a relative tearing motion. Seventhly, with the assistance of the airflow channel formed by the gripping surfaces of the tearing gripper, the airflow entering the airflow channel purifies and assists in corner-lifting. With the coordination of the airflow, not only is it beneficial to remove corners, but it also further reduces the damage or breakage rate of the tearing tape and corners. Simultaneously, regarding airflow purging, during the removal of the protective film, the airflow can be used to purge the loosened gripper head, removing the tearing tape and... The clamping heads are blown apart relative to each other, thus assisting in the film-receiving action; the angle formed between the inward-folding corner and the A-side film is the tearing angle, and the tearing angle is kept at an acute angle. The film is then torn diagonally in a manner that either keeps the tearing angle constant, gradually increases, or gradually decreases. Regardless of whether the angle is constant or changing, it can be implemented as long as it is within the corresponding tearing angle range. However, essentially, the smaller the tearing angle, the easier (and less strenuous) the tearing. Furthermore, based on the movement of the adsorption platform, not only is the film-tearing difficulty reduced, but the display glass can also be horizontally moved to the next workstation, achieving convenient transfer of the A and B-side protective films during tearing. That is, it requires little space, has a simple structure, and also avoids external damage to the display glass during the flipping process.

[0084] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A low-damage, corner-lifting, motion-based peeling process for a screen display glass protective film, comprising the following steps: S1, A-side tear film, which uses an A-side tear film structure that sequentially lifts the corner and tears off; S2, Display glass re-installation; S3, B-side tear film, which employs a B-side tear film structure that sequentially lifts the corner and tears off, is characterized by, The A-side tear-off structure includes an A-side lifting corner unit and an A-side tear-off unit. The A-side lifting corner unit includes an A-base, tear-off grippers, a roller coordination group, and an air nozzle coordination group. The A-base includes a movable base and a tilting base, and the tear-off grippers, roller coordination group, and air nozzle coordination group are set on the tilting base. The A-side tear-off unit includes an adsorption platform, a first power component that drives the movable base to move in the XYZ three-axis coordinate system, and a second power component that drives the adsorption platform to move in coordination. The roller coordination group includes rollers that rotate on a wheel base and a telescopic cylinder that drives the wheel base to lift and lower. In step S1, the corner lifting process begins with the following steps: First, an adsorption platform is used to suction the A-side film downwards and transfer it to the A-side film peeling area. The self-adhesive section of the peeling tape is then attached to the corner of the A-side film, and simultaneously, the peeling tape extends outwards from the corner to form an extended section. Second, peeling claws hold the end of the extended section, which consists of a holding part and a connecting part. The peeling claws then invert to gradually increase the angle between the connecting part and the display glass, and rollers roll over the adhesive section to prepare for peeling. Finally, under the inverting and inward movement of the peeling claws, the rollers... The rollers move synchronously with the tear-off grippers and lift upwards to maintain the same rolling contact position and corner tear-off position, gradually turning inwards. At the same time, the airflow inside the tear-off grippers blows along the connecting part towards the display glass and is refracted to cooperate between the A-film and the display glass for tearing, until the gripping position of the tear-off tape is inside the tear-off position of the A-film, completing the corner lifting of the A-film. During tearing, the adsorption platform and the tear-off grippers move relative to each other, and the tear-off grippers move diagonally to the opposite corner to tear the A-film away from the display glass. In step S2, a horizontal moving track and a horizontal moving platform are used to dock the display glass with the A film removed to the horizontal moving platform. The display glass enters the B film removal area along the horizontal moving track with the B film facing upward. The tear-off structure on side B is the same as that on side A, but the layout is reversed. At the same time, the corner lifting and tearing of side B are completed sequentially using the same steps as in S1.

2. The low-damage lifting angle and motion-based tearing synergistic tearing process for the screen display glass protective film according to claim 1, characterized in that, When preparing to peel off the film, the connecting part is tangent to the roller, and the angle between the connecting part and the display glass is acute.

3. The low-damage lifting angle and motion-based tearing synergistic tearing process for the screen display glass protective film according to claim 2, characterized in that, During the process of the connecting part moving to complete the preparation for tearing the film, the adhesive section is in a state of no force.

4. The low-damage lifting angle and motion-based tearing synergistic tearing process for the screen display glass protective film according to claim 1, characterized in that, When the corner is lifted, the angle between the connecting part and the display glass is an obtuse angle.

5. The low-damage lifting angle and motion-based tearing synergistic tearing process for the screen display glass protective film according to claim 1, characterized in that, When lifting the corner, the rollers maintain equal rolling pressure on the surface of the adhesive section.

6. The low-damage lifting angle and motion-based tearing synergistic tearing process for the screen display glass protective film according to claim 5, characterized in that, The roller's surface covers the entire adhesive section.

7. The low-damage lifting angle and motion-based tearing synergistic tearing process for the screen display glass protective film according to claim 1, characterized in that, During the tearing process, the rollers detach from the display glass, and the airflow inside the tearing claws stops blowing.

8. The low-damage lifting angle and motion-based tearing synergistic tearing process for the screen display glass protective film according to claim 1, characterized in that, With the assistance of the airflow channel formed by the clamping surface of the film-tearing claw, the airflow entering the airflow channel is purged to assist in lifting the angle.

9. The low-damage lifting angle and motion-based tearing synergistic tearing process for the screen display glass protective film according to claim 8, characterized in that, A groove is formed on the clamping surface that is recessed inward from the surface. The clamping part closes the groove and opens the port to form an airflow channel.

10. The low-damage lifting angle and motion-based tearing synergistic tearing process for the screen display glass protective film according to claim 1, characterized in that, In step S1, the angle formed between the inward-folding corner and the A-mask is the tearing angle. The tearing angle is kept at an acute angle and the material is torn diagonally in a manner that either keeps the tearing angle constant or gradually increases or gradually decreases.

11. The low-damage lifting angle and motion-based tearing synergistic tearing process for the screen display glass protective film according to claim 10, characterized in that, The adsorption platform moves along the transverse track to peel off the A-face mask in coordination with the tearing gripper motion.

12. The low-damage lifting angle and motion-based tearing synergistic tearing process for the screen display glass protective film according to claim 1, characterized in that, The length of the extension segment is greater than the length of the adhesive segment, and the length of the clamping part is greater than the length of the connecting part.

13. The low-damage lifting angle and motion-based tearing synergistic tearing process for the screen display glass protective film according to claim 1, characterized in that, In step S1, the adhesive segment adheres to the corner of the A-film along the diagonal direction of the display glass, and the extended segment extends outward along the length direction of the adhesive segment.

14. The low-damage lifting angle and motion-based tearing synergistic tearing process for the screen display glass protective film according to claim 1, characterized in that, The film-tearing gripper includes a gripping head and a power unit. The gripping head includes a first gripping arm and a second gripping arm, and the gripping surfaces of the first and second gripping arms are in close contact for gripping. The air nozzle cooperative assembly includes an air nozzle located between the first and second gripping arms and facing the gripping surface, and an air supply component. An airflow groove is formed on the gripping surface, and the airflow ejected from the air nozzle blows along the airflow groove toward the display glass to form a blow-and-tear cooperative process.

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