Film peeling structure of screen protection film

Abstract

The present invention discloses a film peeling structure of a screen saver film, wherein the screen saver film is pasted on a release material layer at intervals and is wound with the release material layer in a roll shape, and in particular, the film peeling structure includes a release material layer reeling and unreeling unit and a screen saver film peeling unit. On the one hand, the present invention combines the dynamic balance formed by multiple forces of the screen saver film, and gradually peels off the film during movement to avoid causing the screen saver film to deviate, thereby improving the flatness and state accuracy of the peeled screen saver film, so as to provide a high-quality operation basis for subsequent attachment; on the other hand, it can also realize the dynamic circulation of the release material layer, and based on the decomposition of the force formed by the inclined film peeling station, it is more conducive to the peeling of the screen saver film in dynamic balance, and at the same time, it will not cause the end to be lifted up, and also reduces the deformation rate of the screen saver film or the release material layer, thereby reducing the difficulty of peeling.

Description

Technical Field

[0001] The invention belongs to the technical field of film coating, and in particular relates to a film peeling structure of a screen protector film. Background Art

[0002] At present, in the production of electronic display screens, lamination is an indispensable process, and the lamination process includes peeling off the film and sticking the film, wherein peeling off the film refers to peeling off the screen protector from the release material layer, and sticking the film refers to sticking the peeled screen protector on the display screen.

[0003] However, the screen protector is relatively spaced and attached to the release material layer, and is rolled up together with the release material layer. When the film needs to be peeled off, it is first unrolled and then peeled off. However, there are the following technical difficulties in the actual film peeling process:

[0004] 1) If the end is lifted and then gradually peeled off, the existence of the lifted part will cause the screen protector to be peeled off the display screen due to external force.

[0005] 2) If the screen protector is peeled off simultaneously, the screen protector is likely to bring up the release material layer during the peeling operation, which not only makes it difficult to peel off the film, but also increases the probability of film deformation, and also increases the difficulty of controlling the tension of the release material layer (such as the release film);

[0006] 3) There is another important factor in the peeling process, that is how to maintain the flatness of the entire screen protector film (both of the above two implementation methods have flatness defects), because once the deviation occurs, it will directly lead to a decrease in the quality of the subsequent film application (such as: hollowing, bubbles, etc.). Summary of the invention

[0007] The purpose of the invention is to overcome the deficiencies of the prior art and provide a new film peeling structure for a screen protector film.

[0008] To achieve the above object, the present invention adopts the following scheme:

[0009] A film peeling structure for a screen protector film, wherein the screen protector film is pasted on a release material layer at intervals and is wound with the release material layer in a roll shape, in particular, the film peeling structure comprises a release material layer unwinding unit and a screen protector film peeling unit, wherein the release material layer unwinding unit comprises an unwinder, a rewinder, and a transfer device, the unwound release material layer is rewinded by the rewinder after passing through the transfer device, and a film peeling station inclined from top to bottom along a forward transmission direction is formed in the transfer path, and the screen protector film keeps being synchronously inclined with the release material layer and passes through the film peeling station upward;

[0010] The screen protector film peeling unit includes a peeling seat located above the film peeling station, a negative pressure adsorption head installed on the peeling seat, an angle adjustment component that drives the negative pressure adsorption head to be pressed down or tilted up from the front end in a horizontal direction, and a peeling power piece that drives the peeling seat to rise and fall. After each screen protector film moves to the film peeling station, the negative pressure adsorption head fully adheres to the surface of the screen protector film under angle adjustment, and the front end of the negative pressure adsorption head is tilted and synchronously driven by the peeling power piece to lift the negative pressure adsorption head upward so that the screen protector film is peeled off the release material layer in dynamic balance.

[0011] Preferably, during the peeling process, the components of the adsorption force provided by the negative pressure adsorption head to the screen protector film and the peeling force provided by the release material layer moving forward to the screen protector film in the up and down directions are in a balanced state. In this way, the balance of forces is adjusted synchronously with the change of the angle, so that the screen protector film is gradually peeled off the release material layer while maintaining dynamic balance, so as to avoid displacement of the screen protector film or damage to its flatness, and improve the lamination quality.

[0012] According to a specific implementation and preferred aspect of the present invention, the angle formed by the release material layer and the screen protector film with the horizontal plane in the film peeling station is α, and α≤15°. At this angle, the screen protector film is peeled off smoothly and without deviation while maintaining dynamic balance.

[0013] Preferably, 1°≤α≤8°. Generally, 1°~5° is the best.

[0014] In this example, during the peeling process, based on the decomposition of α=1°, the components of the adsorption force provided by the negative pressure adsorption head to the screen protector film and the peeling force provided by the release material layer to the screen protector film by the forward movement are in a balanced state in the upper and lower directions. In this way, the balance of forces is adjusted synchronously with the change of the angle, so that the screen protector film is gradually peeled off the release material layer while maintaining dynamic balance, so as to avoid the displacement of the screen protector film or the damage of the flatness, and improve the lamination quality.

[0015] According to another specific implementation and preferred aspect of the present invention, the transfer device includes a plurality of transmission rollers located between the unwinder and the rewinder, wherein the plurality of transmission rollers are arranged in the up-down and front-back directions to form a transmission layer, and the transmission layer includes a feeding section located in the upper layer and a return section located in the lower layer. Based on the arrangement of the feeding section and the return section, the cycle of unwinding, peeling, and rewinding of the release material layer can be realized.

[0016] Preferably, the feeding section includes a first section and a second section with a height difference formed by a static eliminator, wherein the second section constitutes a film peeling station. Here, the static electricity of the screen protector film is eliminated by the static eliminator, and the quality of the film is further improved; the design based on the height difference is not only convenient for the implementation of static electricity removal, but also more conducive to the layout of inclined film peeling stations in long transmission lines.

[0017] Furthermore, the static eliminator is an static rod.

[0018] According to another specific implementation and preferred aspect of the present invention, the transfer device further includes a transfer head and a transfer roller arranged at the static eliminator, and two transmission rollers are arranged in an aligned manner at the front end of the second segment, wherein a film peeling station is formed between the transfer roller and the transmission roller above the second segment, which is relatively tensioned and suspended and tilted by the transfer head and the transmission roller below the second segment. With the aid of the height difference, a relatively tensioned, suspended and tilted film peeling station is formed in combination with the transfer head, the transfer roller and the transmission roller.

[0019] Preferably, adsorption holes are formed on the bottom surface of the negative pressure adsorption head and an adsorption cavity is formed inside; here, the adsorption, transfer and attachment of the soft layer screen protector film are implemented by vacuuming. In this example, the negative pressure adsorption head includes an adsorption head mold located at the front end and a plate-type adsorption mold aligned with the adsorption head mold, wherein the adsorption holes on the bottom surface of the adsorption head mold are elongated holes extending along the front-to-back direction, and a plurality of elongated holes are arranged side by side along the left-to-right direction; the adsorption holes on the bottom surface of the plate-type adsorption mold are in the shape of circular holes and arranged in an array. Furthermore, the area of ​​the elongated holes is larger than the area of ​​the circular holes, wherein the area of ​​the elongated holes is at least 5 to 10 times the area of ​​the circular holes. Here, different adsorption forces are provided based on the elongated holes and circular holes formed by the head, which is not only convenient for the tearing operation, but also for the subsequent attachment operation.

[0020] According to another specific implementation and preferred aspect of the present invention, the power output directions of the peeling power member and the angle adjustment member are the same. Based on the same power direction, motion interference caused by the tilt of the angle power direction during the lifting process is avoided.

[0021] Preferably, the angle adjustment component includes a pivoting portion located at the rear end of the negative pressure adsorption head and capable of being rotatably connected to the peeling seat, and an adjustment portion for rotating the front end of the negative pressure adsorption head and the peeling seat and slidingly connecting them along the front-to-back direction, wherein the front and rear ends of the negative pressure adsorption head are synchronously rotated around the horizontal direction, and the front end of the negative pressure adsorption head slides in the front-to-back direction. In short, based on the cooperation of the sliding and rotating of the front end, the above-mentioned power direction is achieved, and it is kept in a triangular distribution during the pressing or tilting action to improve the sensitivity and stability of the angle adjustment.

[0022] In some specific embodiments, the adjustment part includes a mounting seat fixed on the negative pressure adsorption head, a slide seat with a lower end slidably mounted on the mounting seat along the front-back direction, and a power rod mounted on the peeling seat and telescopically moving up and down, wherein the lower end of the power rod is rotatably connected to the upper end of the slide seat. Further, the slide seat includes a seat body, a seat frame rod fixedly mounted on the seat body, wherein the upper end of the seat frame rod and the lower end of the power rod are rotatably connected via a rotating shaft. That is, by sliding and rotating, the angle adjustment is implemented around the rear end in the vertical direction of the force.

[0023] Preferably, the pivoting part includes a lifting ear mounted on the negative pressure adsorption head, a hanging edge mounted on the peeling seat and located between the two lifting ears, and a pivot mounted on the hanging edge and rotatably connected to the lifting ears through bearings. Based on the design of the pivot, the rotation adjustment and installation are facilitated. In this example, the pivot is located at the bottom of the hanging edge, and the hanging edge is arranged perpendicular to the bottom surface of the peeling seat.

[0024] In addition, the peeling power piece is a power device composed of a telescopic rod or a power screw.

[0025] Preferably, the film peeling structure further comprises a displacement unit for driving the screen protector film peeling unit to move in the left and right directions. Based on the transfer, the peeled screen protector film is sent to the film pasting station to implement high-quality film pasting in a flat and non-deflected mode.

[0026] Due to the application of the above-mentioned technology and equipment solutions, the present invention has the following advantages compared with the prior art:

[0027] In the existing film peeling process, if the end is lifted and then peeled off gradually, the existence of the lifted part will cause a high probability that the screen protector will be peeled off the display screen due to external force; if the screen protector is peeled off synchronously, the screen protector is easy to bring up the release material layer due to the peeling operation, which not only makes it difficult to peel off the film, but also increases the probability of film deformation, and also increases the difficulty of controlling the tension of the release material layer; in addition, there is an important factor in the peeling process, that is, how to maintain the flatness of the entire screen protector (both of the above two implementations have flatness defects), because once it is offset, it directly leads to the shortcomings of low quality of subsequent film application (such as hollowing, bubbles, etc.), and the present invention comprehensively designs the peeling structure of the screen protector, ingeniously solves the shortcomings of the prior art, and after adopting the peeling structure of the screen protector, firstly, based on the unwinding, peeling and winding of the release material layer winding and unwinding unit, the dynamic circulation of the release material layer is realized, and at the same time The screen protector film attached to the release material layer is kept entering the film peeling station; secondly, based on the negative pressure adsorption head being tilted downward and fully attached to the surface of the screen protector film under the angle adjustment, at the same time, driven forward by the release material layer, the front end of the negative pressure adsorption head is lifted up and synchronously driven by the peeling power member to lift the negative pressure adsorption head upward so that the screen protector film is gradually peeled off the release material layer in dynamic balance. Therefore, on the one hand, the present invention combines the dynamic balance formed by multiple forces of the screen protector film, and gradually peels it off during movement to avoid causing the screen protector film to deviate, thereby improving the flatness and state accuracy of the peeled screen protector film, so as to provide a high-quality operation basis for subsequent attachment; on the other hand, it can also realize the dynamic circulation of the release material layer, and based on the decomposition of the force formed by the tilted film peeling station, it is more conducive to the peeling of the screen protector film in dynamic balance, and at the same time, it will not cause the end head to be lifted up, and the deformation rate of the screen protector film or the release material layer is reduced, thereby reducing the difficulty of peeling. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a structural schematic diagram of the film peeling structure of the screen protector film of this embodiment;

[0029] Figure 2 for Figure 1 A schematic diagram of the main view;

[0030] Figure 3 for Figure 2 A top view schematic diagram of

[0031] Figure 4 for Figure 1 A schematic diagram of the structure of the middle release material layer reeling and unreeling unit;

[0032] Figure 5 for Figure 4 A schematic diagram of the main view;

[0033] Figure 6 for Figure 5 A top view schematic diagram of

[0034] Figure 7 for Figure 1 A schematic diagram of the structure of the middle screen protection film peeling unit;

[0035] Figure 8 for Figure 7 The main view diagram in FIG.

[0036] Fig. 9 for Figure 8 A schematic diagram of the structure of a medium negative pressure adsorption head;

[0037] Fig.10 for Fig. 9 Schematic diagram from top view;

[0038] Wherein: 1, release material layer winding and unwinding unit; 10, unwinder; 11, winder; 12, transfer device; 120, transmission roller; 121, transfer head; 122, transfer roller; 123, transfer frame; 13, static eliminator; s, transmission layer; s1, feeding section; s11, first section; s12, second section; s2, return section;

[0039] 2. Screen protection film peeling unit; 20. Peeling seat; 21. Negative pressure adsorption head; 210. Adsorption head mold; 211. Plate adsorption mold; k1, k2, adsorption holes; 22. Angle adjustment component; 220. Pivot joint; 221. Adjustment part; a. Mounting seat; b. Sliding seat; b1. Seat body; b2. Seat frame rod; c. Power rod; d. Lifting ear; e. Hanging edge; f. Pivot; 23. Peeling power part;

[0040] 3. Shifting unit; 30. Track; 31. Shifting seat; 32. Shifting power device;

[0041] m. Screen protector film; n. Release material layer. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in 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 may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0047] like Figures 1 to 3 As shown, the screen protector film peeling structure of this embodiment mainly includes a release material layer unwinding unit 1, a screen protector film peeling unit 2, and a shifting unit 3 for driving the screen protector film peeling unit 2 to move in the left and right directions.

[0048] Specifically, the screen protection film m is attached to the release material layer n at intervals and is wound with the release material layer n to form a roll, wherein the release material layer n is a thin film layer.

[0049] In some specific embodiments, the release material layer unwinding unit 1 includes an unwinder 10 , a reel 11 , and a transfer device 12 . The unwound release material layer n passes through the transfer device 12 and is then reeled up by the reel 11 .

[0050] Combination Figures 4 to 6 As shown, the unwinder 10 and the rewinder 11 are installed on the same frame, and the film unwinded from the unwinder 10 is transported forward, and the transport path forms a transport layer s under the transport of the transporter 12, that is, the transport layer s includes a feed section s1 located at the upper layer and a return section s2 located at the lower layer, wherein the feed section s1 is connected to the unwinder 10, and the return section s2 is connected to the rewinder 11. Based on the arrangement of the feed section and the return section, the cycle of unwinding, peeling, and rewinding of the release material layer can be realized.

[0051] In some specific embodiments, the unwinder 10 is a commonly used winding shaft structure, which mainly implements unwinding by the reverse rotation of the winding disk; the transfer device 12 includes a plurality of transmission rollers 120 located between the unwinder 10 and the winder 11, wherein the plurality of transmission rollers 120 are arranged in the up and down and front and back directions to form a transmission layer s.

[0052] In this example, the feeding section s1 includes a first section s11 and a second section s12 with a height difference formed by a static eliminator 13, wherein the second section s12 constitutes a film peeling station. Here, the static electricity of the screen saver film is eliminated based on the static eliminator, and the quality of the film is further improved; the design based on the height difference. It is not only convenient for the implementation of static electricity removal, but also more conducive to the layout of inclined film peeling stations in long transmission lines. Further, the static eliminator is an electrostatic rod.

[0053] The transfer device 12 also includes a transfer head 121 and a transfer roller 122 disposed at the static eliminator 13. Two transmission rollers 120 are arranged in an aligned manner at the front end of the second segment s12, wherein a film peeling station is formed between the transfer roller 122 and the transmission roller 120 above the second segment s12, which is relatively tensioned and suspended and tilted by the transfer head 121 and the transmission roller 120 below the second segment s12. With the aid of the height difference, a relatively tensioned, suspended and tilted film peeling station is formed in combination with the transfer head 121, the transfer roller 122 and the transmission roller 120. That is, a film peeling station tilted from top to bottom along the forward transmission direction is formed in the transfer path, and the screen protector m keeps tilting synchronously with the release material layer n and passes through the film peeling station upward. In this example, the transmission roller 120, the transfer head 121 and the transfer roller 122 are all assembled using a transfer frame 123.

[0054] In some specific embodiments, the angle formed by the release material layer n and the screen protector m in the film peeling station and the horizontal plane is α, and α≤15°. Preferably, 1°≤α≤8°. Generally, 1°~5° is the best. At this angle, the screen protector is peeled off smoothly and without deviation while maintaining dynamic balance.

[0055] Combination Figures 7 to 10 As shown, the screen saver film peeling unit 2 includes a peeling seat 20 located above the film peeling station, a negative pressure adsorption head 21 installed on the peeling seat 20, an angle adjustment component 22 that drives the negative pressure adsorption head 21 to be pressed down or tilted up from the front end in a horizontal direction, and a peeling power piece 23 that drives the peeling seat 20 to rise and fall. After each screen saver film m moves to the film peeling station, the negative pressure adsorption head 21 fully adheres to the surface of the screen saver film m under angle adjustment, and the front end of the negative pressure adsorption head 21 is tilted and synchronously driven by the peeling power piece 23 to lift the negative pressure adsorption head 21 upward so that the screen saver film m is peeled off the release material layer n in dynamic balance.

[0056] In some specific embodiments, adsorption holes are formed on the bottom surface of the negative pressure adsorption head 21, and an adsorption cavity is formed inside; here, the adsorption, transfer and attachment of the soft layer screen protector m are implemented by vacuuming. In this example, the negative pressure adsorption head 21 includes an adsorption head mold 210 located at the front end, and a plate adsorption mold 211 aligned with the adsorption head mold 210, wherein the adsorption holes k1 on the bottom surface of the adsorption head mold 210 are elongated holes extending along the front-to-back direction, and a plurality of elongated holes are arranged side by side along the left-to-right direction; the adsorption holes k2 on the bottom surface of the plate adsorption mold 211 are circular holes and arranged in an array. Furthermore, the area of ​​the elongated hole is larger than the area of ​​the circular hole, wherein the area of ​​the elongated hole is at least 5 to 10 times the area of ​​the circular hole. Here, different adsorption forces are provided based on the elongated holes and circular holes formed by the head, which is not only convenient for the tearing operation, but also for the subsequent attachment operation.

[0057] In this example, the power output directions of the peeling power member 23 and the angle adjustment member 22 are the same. Based on the same power direction, the movement interference caused by the tilt of the angle power direction during the lifting process is avoided. The angle adjustment member 22 includes a pivot portion 220 located at the rear end of the negative pressure adsorption head 21 and capable of being rotatably connected to the peeling seat 20, and an adjustment portion 221 for rotating the front end of the negative pressure adsorption head 21 with the peeling seat 20 and slidingly connected along the front-to-back direction, wherein the front and rear ends of the negative pressure adsorption head 21 are synchronously rotated around the horizontal direction, and the front end of the negative pressure adsorption head 21 slides in the front-to-back direction. In short, based on the cooperation of the sliding and rotation of the front end, the above-mentioned same power direction is achieved, and it is kept in a triangular distribution during the downward pressing or lifting action to improve the sensitivity and stability of the angle adjustment.

[0058] In some specific embodiments, the pivoting portion 220 includes a lifting lug d mounted on the negative pressure adsorption head 21, a hanging edge e mounted on the peeling seat 20 and between the two lifting lugs d, and a pivot f mounted on the hanging edge e and rotatably connected to the lifting lugs through bearings. Based on the design of the pivot, in order to facilitate the implementation of rotation adjustment and installation, in this example, the pivot is located at the bottom of the hanging edge, and the hanging edge is arranged perpendicular to the bottom surface of the peeling seat. The adjustment portion 221 includes a mounting seat a fixed on the negative pressure adsorption head 21, a sliding seat b whose lower end is slidably mounted on the mounting seat a along the front-to-back direction, and a power rod c mounted on the peeling seat 20 and telescopically moving up and down, wherein the lower end of the power rod c is rotatably connected to the upper end of the sliding seat b. Further, the sliding seat b includes a seat body b1, a seat frame rod b2 fixedly mounted on the seat body b1, wherein the upper end of the seat frame rod b2 and the lower end of the power rod c are rotatably connected through a rotating shaft. That is, through sliding and rotating cooperation, the angle adjustment is implemented around the rear end in the up and down directions of the force.

[0059] In some specific implementations, the peeling power member 23 is a power device composed of a telescopic rod or a power screw. In this example, the peeling power member 23 and the power rod c are both telescopically driven by a cylinder.

[0060] As for the shift unit 3, a conventional track 30, a shift seat 31 and a shift power device 32 are used, wherein the shift seat 31 is moved laterally along the track under the push of the shift power device 32. Therefore, based on the transfer, the peeled screen protector film m is sent to the film pasting station to implement high-quality film pasting in a flat and non-deflected mode.

[0061] In summary, the implementation process of this embodiment is as follows:

[0062] S1. Film transmission path planning

[0063] After the screen protection film m and the release material layer n unwound from the unwinder 10 are transported forward and transferred by the transfer device 12 to form upper and lower transmission layers, the release material layer n is sent to the rewinder 11 for rewinding, wherein the upper layer transmission path is a film peeling station inclined from top to bottom along the forward transmission direction;

[0064] S2. Feeding of screen protector film in sequence

[0065] During the unwinding and rolling motion of the release material layer n, the screen protector film m keeps being tilted synchronously with the release material layer n and passes upward through the film peeling station, so as to feed the screen protector film m piece by piece;

[0066] S3. Removal of screen protector

[0067] After entering the film peeling station, the screen saver film m and the release material layer n remain aligned and pause forward transmission, and then the front end of the negative pressure adsorption head 21 of the film peeling station is pressed down and adjusted to be consistent with the inclination angle of the film peeling station, and then adhered to the surface of the screen saver film by negative pressure adsorption. Then, the release material layer n is transmitted forward. At the same time, the front end of the negative pressure adsorption head 21 is tilted and synchronously driven by the peeling power part 23 to lift the negative pressure adsorption head 21 upward. Therefore, the screen saver film m is gradually peeled off the release material layer n in dynamic balance.

[0068] In this example, during the peeling process, based on the decomposition of α=8°, the components of the adsorption force provided by the negative pressure adsorption head 21 to the screen protector film m and the peeling force provided by the release material layer n to the screen protector film m by the forward movement are in a balanced state in the upper and lower directions. In this way, the balance of forces is adjusted synchronously with the change of the angle, so that the screen protector film is gradually peeled off the release material layer while maintaining dynamic balance, so as to avoid displacement of the screen protector film or damage to its flatness, and improve the lamination quality.

[0069] In summary, after adopting the film peeling structure of the screen protector film, firstly, based on the unwinding, peeling and winding of the release material layer winding and unwinding unit, the dynamic circulation of the release material layer is realized, and at the same time, the screen protector film attached to the release material layer is kept entering the film peeling station; secondly, based on the negative pressure adsorption head under angle adjustment, it tilts downward and fully fits the surface of the screen protector film, and at the same time, driven forward by the release material layer, the front end of the negative pressure adsorption head is lifted up and synchronously driven by the peeling power part to lift the negative pressure adsorption head upward so that the screen protector film is gradually peeled off the release material layer in dynamic balance. Therefore, on the one hand, the present invention combines the dynamic balance formed by multiple forces of the screen protector film, and gradually peels it off during movement to avoid causing the screen protector film to deviate, thereby improving the flatness and state accuracy of the peeled screen protector film, so as to provide a high-quality operation basis for subsequent attachment. On the other hand, it can also realize the dynamic circulation of the release material layer, and based on the decomposition of the force formed by the inclined film peeling station, it is more conducive to the peeling of the screen protector in dynamic balance, and at the same time will not cause the end head to lift up, and also reduce the deformation rate of the screen protector or the release material layer, thereby reducing the difficulty of peeling; on the third aspect, during the peeling process, the adsorption force provided by the negative pressure adsorption head to the screen protector and the peeling force provided by the forward movement of the release material layer to the screen protector are in a balanced state in the up and down directions. In this way, the balance of forces is adjusted synchronously with the change of the angle, so that the screen protector maintains dynamic balance and gradually peels off the release material layer, so as to avoid displacement of the screen protector or damage to the flatness, and improve the lamination quality; on the fourth aspect, the angle formed by the release material layer and the screen protector in the film peeling station and the horizontal plane is α, and α≤15°.At this angle, the screen protector is peeled off smoothly and without deviation while maintaining dynamic balance. Generally, 1°~5° is the best. In the fifth aspect, the transfer device includes a plurality of transmission rollers located between the unwinder and the reel, wherein the plurality of transmission rollers are arranged in the up-down and front-back directions to form a transmission layer, and the transmission layer includes a feeding section located on the upper layer and a return section located on the lower layer. Based on the setting of the feeding section and the return section, the cycle of unwinding, peeling and rewinding of the release material layer can be realized. In the sixth aspect, the static electricity of the screen protector is eliminated based on the static eliminator to further improve the quality of the coating. The design based on the height difference is not only convenient for the implementation of static electricity removal, but also more conducive to the layout of the inclined film peeling station in the long transmission line. At the same time, with the assistance of the height difference, the transfer head, the transfer roller and the transmission roller are combined to form a relatively tensioned suspended inclined film peeling station. In the seventh aspect, the power output direction of the peeling power member and the angle adjustment member is the same. Based on the same power direction, the movement interference caused by the tilt of the angle power direction during the lifting process is avoided. At the same time, based on the cooperation of the sliding and rotation of the front end, the above-mentioned power direction is realized. In the eighth aspect, the angle adjustment is implemented around the rear end in the up and down directions of the force through sliding and rotating cooperation; the design based on the pivot is convenient for rotation adjustment and installation; the ninth aspect is based on the adsorption holes on the bottom surface of the adsorption head mold being long holes extending in the front and back directions, and multiple long holes are arranged side by side in the left and right directions; the adsorption holes on the bottom surface of the plate-type adsorption mold are in the shape of round holes and arranged in an array, and the same The area of ​​the elongated hole is larger than that of the circular hole, wherein the area of ​​the elongated hole is at least 5 to 10 times that of the circular hole. Here, the elongated hole and the circular hole formed based on the head provide different adsorption forces, which is not only convenient for the tearing operation, but also convenient for the subsequent attachment operation. In the tenth aspect, the shifting unit adopts a conventional track, a shifting seat and a shifting power device, wherein the shifting seat is moved laterally along the track under the push of the shifting power device. Therefore, the peeled screen saver film is sent to the film pasting station based on the transfer to implement high-quality film pasting in a flat and non-offset mode.

[0070] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A film peeling structure for a screen protector film, wherein the screen protector film is pasted on a release material layer at intervals and is wound with the release material layer in a roll shape, the film peeling structure comprising a release material layer winding and unwinding unit and a screen protector film peeling unit, characterized in that: The release material layer unwinding unit comprises an unwinder, a rewinder, and a transfer device. The unwinded release material layer is rewinded by the rewinder after passing through the transfer device, and a film peeling station inclined from top to bottom along the forward transmission direction is formed in the transfer path. The screen protector keeps the synchronous inclination with the release material layer and passes through the film peeling station upward. The screen-saver film peeling unit includes a peeling seat located above the peeling station, a negative pressure adsorption head installed on the peeling seat, an angle adjustment component that drives the negative pressure adsorption head to be pressed down or tilted up from the front end in the horizontal direction, and a peeling power piece that drives the peeling seat to rise and fall. After each screen-saver film moves to the peeling station, the negative pressure adsorption head fully adheres to the surface of the screen-saver film under angle adjustment, and the front end of the negative pressure adsorption head is tilted and synchronously driven by the peeling power piece to lift the negative pressure adsorption head upward so that the screen-saver film is peeled off the release material layer in dynamic balance; the bottom surface of the negative pressure adsorption head forms an adsorption hole and the inside forms an adsorption cavity, wherein the negative pressure adsorption head includes an adsorption head mold located at the front end and a plate adsorption mold aligned with the adsorption head mold, and the adsorption The adsorption holes on the bottom surface of the attached head mold are long holes extending along the front-to-back direction, and multiple long holes are arranged side by side along the left-to-right direction; the adsorption holes on the bottom surface of the plate-type adsorption mold are circular holes and arranged in an array; and / or the area of ​​the long holes is larger than the area of ​​the circular holes, and the area of ​​the long holes is at least 5 to 10 times the area of ​​the circular holes; the power output directions of the peeling power part and the angle adjustment part are the same; the angle adjustment part includes a pivot part located at the rear end of the negative pressure adsorption head and rotatably connected to the peeling seat, and an adjustment part for rotating the front end of the negative pressure adsorption head with the peeling seat and slidingly connected along the front-to-back direction, wherein the front and rear ends of the negative pressure adsorption head rotate synchronously around the horizontal direction, and the front end of the negative pressure adsorption head slides in the front-to-back direction.

2. The peeling structure of the screen protector according to claim 1, characterized in that: During the peeling process, the components of force formed in the upper and lower directions by the adsorption force provided by the negative pressure adsorption head to the screen protector film and the peeling force provided by the forward movement of the release material layer to the screen protector film are in a balanced state.

3. The peeling structure of the screen protector according to claim 1, characterized in that: The angle formed by the release material layer and the screen protection film in the film peeling station and the horizontal plane is α, and α≤15°.

4. The peeling structure of the screen protector according to claim 3, characterized in that: 1°≤α≤8°。 5. The peeling structure of the screen protector according to claim 1, characterized in that: The transfer device includes a plurality of transmission rollers located between the unwinder and the rewinder, wherein the plurality of transmission rollers are arranged in the up-down and front-back directions to form transmission layers, and the transmission layers include a feeding section located in the upper layer and a return section located in the lower layer.

6. The peeling structure of the screen protector according to claim 5, characterized in that: The feeding section includes a first section and a second section with a height difference formed by a static eliminator, wherein the second section constitutes the film peeling station.

7. The peeling structure of the screen protector according to claim 6, characterized in that: The static eliminator is a static rod.

8. The peeling structure of the screen protector according to claim 6 or 7, characterized in that: The transfer device also includes a transfer head and a transfer roller arranged at the static eliminator, and the two transfer rollers are aligned vertically at the front end of the second segment, wherein the film peeling station is formed between the transfer roller and the transfer roller above the second segment, in which the transfer head and the transfer roller below the second segment are relatively tensioned and suspended and tilted.

9. The peeling structure of the screen protector according to claim 1, characterized in that: The adjustment part includes a mounting seat fixed on the negative pressure adsorption head, a sliding seat whose lower end is slidably mounted on the mounting seat along the front-rear direction, and a power rod installed on the peeling seat and telescopically moving up and down, wherein the lower end of the power rod and the upper end of the sliding seat are rotatably connected.

10. The peeling structure of the screen protector according to claim 9, characterized in that: The sliding seat comprises a seat body and a seat frame rod fixedly mounted on the seat body, wherein the upper end of the seat frame rod and the lower end of the power rod are rotationally connected via a rotating shaft.

11. The peeling structure of the screen protector according to claim 1, characterized in that: The pivoting part includes a lifting ear mounted on the negative pressure adsorption head, a hanging edge mounted on the peeling seat and located between two lifting ears, and a pivot mounted on the hanging edge and rotatably connected to the lifting ears through bearings.

12. The peeling structure of the screen protector according to claim 1, characterized in that: The peeling power piece is a power device composed of a telescopic rod or a power lead screw.

13. The peeling structure of the screen protector according to claim 1, characterized in that: The film peeling structure further comprises a shifting unit for driving the screen-saver film peeling unit to move in left and right directions.

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