Screen protection film uncovering unit

Abstract

The invention discloses a screen protection film uncovering unit which comprises an uncovering seat, a negative pressure adsorption head, an angle adjusting part and an uncovering power part. On one hand, on the basis of decomposition of force formed by the inclined film uncovering station, dynamic balance formed by multiple stresses of the screen protection film is combined, the screen protection film is gradually uncovered in the movement process, the uncovering difficulty is reduced, deviation of the screen protection film is avoided, and therefore the flatness of the uncovered screen protection film and the state accuracy are improved; on the other hand, on the basis that the power output directions of the uncovering power part and the angle adjusting part are the same, motion interference caused by inclination of the angle power direction in the lifting process is avoided, meanwhile, on the basis of cooperation of sliding and rotating of the front end, triangular distribution is kept in the downward pressing or tilting action, and the sensitivity and stability of angle adjustment are improved.

Description

[0001] This application is a divisional application with the application date of November 14, 2024; application number 2024116229584; and the name is a laminating device for a screen saver film. Technical Field

[0002] The invention belongs to the technical field of laminating, and in particular relates to a screen protection film peeling unit. Background Art

[0003] At present, in the production of electronic screens, lamination is an indispensable process, and the lamination process includes peeling and sticking. Peeling refers to peeling off the screen protector from the release material layer, and sticking refers to sticking the peeled screen protector on the screen.

[0004] However, the screen protector is laminated on a relatively spaced release material layer and rolled up together with the release material layer. When the film needs to be removed, it is first unrolled and then removed. Finally, the removed screen protector is moved to the film application station for application. However, in actual operation, there are the following technical difficulties:

[0005] 1) If the end portion is lifted and then peeled off gradually, the presence of the lifted portion increases the probability of the screen protector being peeled off the screen due to external force. If the screen protector is peeled off simultaneously, the screen protector is likely to pick up the release material layer during the peeling operation, making it difficult to peel off the film and increasing the probability of film deformation. It also increases the difficulty of controlling the tension of the release material layer (such as the release film). In addition, a critical factor in the peeling process is how to maintain the flatness of the entire screen protector (both the above two embodiments have flatness defects). Once deflected, it will directly lead to reduced quality of the subsequent film application (such as hollowing, bubbles, etc.).

[0006] 2) In most cases, the screen protector is attached to the screen surface while the screen applying mechanism is moving, while the screen is stationary. This implementation method is generally suitable for applying films to flat products. Once the screen is bent or folded, the angle of the film needs to change in real time. Therefore, the formed film cannot meet the attachment requirements, resulting in insufficient practicality of the film. Summary of the Invention

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a new screen protection film peeling unit.

[0008] To achieve the above-mentioned purpose, the present invention adopts the following scheme: a screen protector film peeling unit, which 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 component that drives the peeling seat to move up and down, wherein the power output directions of the peeling power component and the angle adjustment component are the same; the angle adjustment component includes a pivotal 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 connected along the front-to-back direction, the front and rear ends of the negative pressure adsorption head both rotate synchronously around the horizontal direction, and the front end of the negative pressure adsorption head slides in the front-to-back direction; after each screen protector film moves to the 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 component to lift the negative pressure adsorption head upward so that the screen protector film is peeled off from the release material layer in dynamic balance.

[0009] In some specific embodiments, the adjustment portion includes a mounting base fixed to the negative pressure adsorption head, a sliding base with its lower end slidably mounted on the mounting base in a front-to-rear direction, and a power rod mounted on the peeling base for vertical telescopic movement, wherein the lower end of the power rod is rotatably connected to the upper end of the sliding base. Furthermore, the sliding base includes a base body and a seat frame rod fixedly mounted to the base 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. In other words, through the combination of sliding and rotation, angular adjustment is achieved around the rear end in the vertical direction of the applied force.

[0010] According to one specific embodiment and preferred aspect of the present invention, the pivotal connection comprises a lifting lug mounted on the negative pressure suction head, a hanging edge mounted on the peeling seat and positioned between the two lifting lugs, and a pivot mounted on the hanging edge and rotatably connected to each of the lifting lugs via a bearing. The pivot design facilitates rotational adjustment and installation. In this embodiment, the pivot is located at the bottom of the hanging edge, which is perpendicular to the bottom surface of the peeling seat. The peeling power element is a power device consisting of a telescopic rod or a power screw.

[0011] According to another specific embodiment and preferred aspect of the present invention, during the peeling process, the vertical components of the suction force exerted by the negative pressure suction head on the screen protector and the peeling force exerted by the forward movement of the release material layer on the screen protector are in equilibrium. This force balance is adjusted synchronously with the angle, allowing the screen protector to be gradually peeled off the release material layer while maintaining dynamic equilibrium. This prevents the screen protector from shifting or damaging its flatness, thereby improving lamination quality.

[0012] According to a specific embodiment and preferred aspect of the present invention, the angle formed between 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.

[0013] Preferably, 1°≤α≤8°. Generally, 1°-5° is the best. In this case, in the process of peeling off, based on the decomposition of α=1°, the adsorption force provided by the negative pressure adsorption head to the screen protection film and the peeling force provided by the forward movement of the release material layer to the screen protection film are in balance in the direction of the upper and lower forces. In this way, the balance of force is adjusted synchronously with the change of angle, so that the screen protection film maintains a dynamic balance with the release material layer, which avoids the displacement or damage of the screen protection film, and improves the film quality.

[0014] According to another specific implementation and preferred aspect of the present application, an adsorption cavity is formed inside the negative pressure adsorption head, and the bottom surface constitutes an adsorption surface, wherein a plurality of adsorption holes are distributed on the adsorption surface, and the adsorption surface is divided into a head adsorption area and a body adsorption area in the front-rear direction, and the adsorption force of the head adsorption area is greater than that of the body adsorption area. Based on the head, a tear-off gap is formed after the head is torn off, and then the screen protection film is separated from the release material layer in a way that gradually maintains the flatness of the screen protection film during movement; at the same time, based on the head, the adsorption force formed by the head is greater than that of other parts, which not only facilitates the tearing operation, but also facilitates the later attachment operation.

[0015] Preferably, the negative pressure adsorption head includes an adsorption head mold and a plate adsorption mold aligned with the adsorption head mold, wherein the adsorption cavities of the adsorption head mold and the plate adsorption mold are not connected to each other, and correspond to the head adsorption area and the body adsorption area. In this case, the adsorption cavities are not connected, and the pressure can be released in sequence, especially during the film coating process, which can be coated in a way of releasing pressure in sequence to maintain a more flat attachment to the screen surface.

[0016] In some specific implementations, the adsorption holes of the head adsorption area are elongated holes extending along the front-rear direction, and a plurality of elongated holes are arranged side by side along the left-right direction; the adsorption holes of the body adsorption area are circular holes, and are arranged in an array; further, the area of the elongated hole is greater than the area of the circular hole, and the area of the elongated hole is at least 5-10 times the area of the circular hole. In the process of tearing and attaching, the forces formed by different sizes are different, and there are also actions in sequence, which can better assist the film coating work.

[0017] In addition, the screen protection film keeps tilting synchronously with the release material layer and passes through the film peeling station upward. The power output directions of the peeling power element and the angle adjusting component are the same. Based on the same power direction, it avoids the movement interference caused by the direction of the angle power during the lifting process. At the same time, the angle adjusting component realizes the same power direction based on the cooperation of the sliding and rotating of the front end, and makes it form a triangular distribution in the action of pressing down or lifting up, so as to improve the sensitivity and stability of the angle adjustment.

[0018] Due to the use of the above technical and equipment scheme, the present application has the following advantages compared with the prior art:

[0019] As for the existing peeling film, if the end is lifted and then peeled off gradually, the existence of the lifted part will lead to a high probability that the screen protector will be peeled off the screen due to external force; if the screen protector is peeled off synchronously, the screen protector is likely 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 (such as: release film); 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 embodiments have flatness defects), because once it causes deviation, it directly leads to a decrease in the quality of the subsequent film application (such as hollowing, bubbles, etc.) and other shortcomings. The present invention designs the screen protector peeling unit as a whole, cleverly solving the shortcomings of the existing technology, and after adopting the screen protector peeling unit, first, based on the negative pressure adsorption head at the angle adjustment Next, it tilts downward and fully adheres to the surface of the screen protector; secondly, 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 is gradually peeled off the release material layer in dynamic balance. Therefore, on the one hand, the present invention is based on the decomposition of the force formed by the tilted peeling station, combined with the dynamic balance formed by multiple forces of the screen protector, and gradually peels off during movement, reducing the difficulty of peeling, avoiding the deviation of the screen protector, and thus improving the flatness and accuracy of the peeled screen protector; on the other hand, based on the same power output direction of the peeling power member and the angle adjustment component, the lifting process is prevented from causing movement interference due to the tilt of the angle power direction. At the same time, based on the cooperation of the sliding and rotation of the front end, the triangular distribution is maintained during the downward pressing or lifting action to improve the sensitivity and stability of the angle adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the screen protector film laminating device of this embodiment;

[0021] Figure 2 for Figure 1 The main schematic diagram of

[0022] Figure 3 for Figure 2 Schematic top view of

[0023] Figure 4 for Figure 1 Schematic diagram of the structure of the middle film peeling device;

[0024] Figure 5 for Figure 4 The main schematic diagram of

[0025] Figure 6 for Figure 5 Schematic top view of

[0026] Figure 7 for Figure 4 Structure diagram of the release material layer winding and unwinding unit;

[0027] Figure 8 Structure diagram of the release material layer winding and unwinding unit; Figure 7 Structure diagram of the release material layer winding and unwinding unit;

[0028] Figure 9 Structure diagram of the release material layer winding and unwinding unit; Figure 8 Structure diagram of the release material layer winding and unwinding unit;

[0029] Figure 10 Structure diagram of the release material layer winding and unwinding unit; Figure 4 Structure diagram of the release material layer winding and unwinding unit;

[0030] Figure 11 Structure diagram of the release material layer winding and unwinding unit; Figure 10 Structure diagram of the release material layer winding and unwinding unit;

[0031] Figure 12 Structure diagram of the release material layer winding and unwinding unit; Figure 11 Structure diagram of the release material layer winding and unwinding unit;

[0032] Figure 13 Structure diagram of the release material layer winding and unwinding unit; Figure 11 Structure diagram of the release material layer winding and unwinding unit;

[0033] J, film peeling device; 1, release material layer winding and unwinding unit; 10, unwinder; 11, winder; 12, transfer conveyor; 120, conveying roller; 121, transfer head; 122, transfer roller; 123, transfer frame; 13, static electricity remover; s, conveying layer; s1, feeding section; s11, first section; s12, second section; s2, return section; 2, screen protection film peeling unit; 20, peeling seat; 21, negative pressure suction head; 210, suction head die; 211, plate suction die; k1, k2, suction hole; 22, angle adjusting component; 220, pivot joint; 221, adjusting component; a, mounting seat; b, sliding seat; b1, seat body; b2, seat frame rod; c, power rod; d, lifting lug; e, hanging edge; f, pivot; 23, peeling power component;

[0034] F, film coating device; 3, conveying line; 30, conveying rail; 31, transfer trolley; 32, carrier frame; 4, shifting unit; 40, rail; 41, shifting seat; 42, shifting power device; 5, film coating roller; 6, fixed seat;

[0035] m, screen protection film; n, release material layer. DETAILED DESCRIPTION

[0036] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0037] 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 device or element referred to 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.

[0038] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0039] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0040] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature. It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0041] like Figures 1 to 3 As shown, the laminating device for the screen saver film of this embodiment includes a film peeling device J and a laminating device F, wherein the screen saver film m is affixed to the release material layer n at intervals and is wound into a roll along with the release material layer n. The film peeling device J is used to peel off the screen saver film m from the unwound release material layer n, and the laminating device F is used to attach the screen saver film m to the screen.

[0042] Combine Figures 4 to 6 As shown, the film peeling device J mainly includes a release material layer winding and unwinding unit 1 and a screen protection film peeling unit 2.

[0043] Specifically, the screen protection film m is laminated on the release material layer n at intervals and is wound around the release material layer n to form a roll, wherein the release material layer n is a thin film layer.

[0044] In some specific embodiments, the release material layer unwinding unit 1 includes an unwinder 10 , a rewinder 11 , and a transfer conveyor 12 . The unwound release material layer n passes through the transfer conveyor 12 and is then rewound by the rewinder 11 .

[0045] Combine Figures 7 to 10 As shown, the unwinder 10 and the rewinder 11 are mounted on the same frame. The film unwound from the unwinder 10 is transported forward and, under the transfer of the intermediate conveyor 12, the transport path forms a transport layer s. That is, the transport layer s includes a feed section s1 located on the upper layer and a return section s2 located on the lower layer. 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 achieved.

[0046] 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 conveyor 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.

[0047] In this example, the feed section s1 consists of a first segment s11 and a second segment s12, separated by a height difference created by a static eliminator 13. The second segment s12 forms the film removal station. The static eliminator eliminates static electricity from the screen protector, further improving the quality of the film. This height difference design not only facilitates static removal but also facilitates the placement of inclined film removal stations within long transmission lines. Furthermore, the static eliminator is an anti-static bar.

[0048] The transfer conveyor 12 also includes a transfer head 121 and a transfer roller 122, which are arranged at the static eliminator 13. Two transfer rollers 120 are arranged in a vertically aligned arrangement at the front end of the second segment s12. The transfer roller 122 and the transfer roller 120 above the second segment s12 are relatively tensioned and suspended in an inclined film peeling station by the transfer head 121 and the transfer roller 120 below the second segment s12. With the help of the height difference, and in combination with the transfer head 121, the transfer roller 122, and the transfer roller 120, a relatively tensioned, suspended, inclined film peeling station is formed. That is, a film peeling station is formed in the transfer path, tilted from top to bottom along the forward transmission direction. The screen protector film m maintains a synchronous tilt with the release material layer n and passes upward through the film peeling station. In this example, the transfer roller 120, the transfer head 121, and the transfer roller 122 are all assembled using a transfer frame 123.

[0049] In some specific embodiments, the angle formed by the release material layer n and the screen protector film m in the film removal station with the horizontal plane is α, and α is ≤ 15°. Preferably, 1° ≤ α ≤ 8°. Generally, 1° to 5° is optimal. At this angle, the screen protector film is removed smoothly and without deviation while maintaining dynamic balance.

[0050] Combine Figures 11 to 13 As shown, the screen saver film peeling unit 2 includes a peeling seat 20 located above the 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 the horizontal direction, and a peeling power member 23 that drives the peeling seat 20 to move up and down. After each screen saver film m is moved to the peeling station, the negative pressure adsorption head 21 fully fits 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 member 23 to lift the negative pressure adsorption head 21 upward so that the screen saver film m is peeled off from the release material layer n in dynamic balance.

[0051] 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 multiple 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 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 on the head, which not only facilitates the tearing operation, but also facilitates the subsequent attachment operation.

[0052] 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 lifting process can avoid motion interference caused by the tilt of the angle power direction. 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.

[0053] In some specific embodiments, the pivotal portion 220 includes a lug d mounted on the negative pressure adsorption head 21, a hanging edge e mounted on the peeling seat 20 and located between the two lugs d, and a pivot f mounted on the hanging edge e and rotatably connected to the lugs via bearings. Based on the design of the pivot, in order to facilitate 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 slide 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 capable of telescopic movement up and down, wherein the lower end of the power rod c is rotatably connected to the upper end of the slide b. Furthermore, the slide 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 is rotatably connected to the lower end of the power rod c via a rotating shaft. That is, through sliding and rotating cooperation, angle adjustment is implemented around the rear end in the vertical direction of the applied force.

[0054] In some specific embodiments, 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 cylinders.

[0055] The laminating device F includes a transmission line 3 located on the opposite side of the film peeling station and corresponding to the laminating station, a shift unit 4 that drives the screen saver film m peeling unit to move left and right, and a laminating roller 5 installed at the front end of the negative pressure adsorption head 21 and capable of rotating. When laminating, the screen saver film peeling unit 2 is located above the laminating station, and is pressed down from the front end of the negative pressure adsorption head 21 to align and fit the front edge of the screen. During the forward transmission of the transmission line 3, and under the decompression or pressure relief of the negative pressure adsorption head 21, the angle adjustment component 22 and the peeling power component 23 synchronously drive the negative pressure adsorption head 21 to move so that the screen saver film m maintains synchronous movement and fit with the changes in the screen surface, and the laminating roller 5 adaptively rolls the surface of the screen saver after attachment as the angle of the negative pressure adsorption head 21 changes.

[0056] In this example, a fixed base 6 is installed at the front end of the negative pressure suction head 21. The laminating roller 5 is rotatably mounted on the fixed base 6, with the bottom surface of the laminating roller 5 flush with the bottom surface of the negative pressure suction head 21. This allows the film to be applied and rolled at the same angle. During the laminating process, the downward pressure exerted by the negative pressure suction head 21 on the screen and the upward and downward forces exerted by the transmission line 3 on the screen are in a state of balance. In this way, the film is gradually attached to the screen as the traction force is applied.

[0057] In some specific embodiments, the conveyor line 3 includes a conveyor rail 30 extending horizontally in a front-to-back direction, a transfer trolley 31 traveling on the conveyor rail 30, and a carrier 32 mounted on the transfer trolley 31. Products are mounted on the carrier 32 with the screen facing upward. In short, based on the movement of the product and combined with the adjustment of the screen protector's adaptability angle and pressure, the screen protector is applied and rolled gradually and synchronously with the changes in the screen, achieving high-quality screen coating (flatness and bubble-free).

[0058] The shift unit 4 includes a track 40 horizontally arranged between the film peeling station and the laminating station, a shift seat 41 slidably arranged on the track 40, and a shift power device 42, wherein the screen saver film peeling unit 2 is installed on the shift seat 41, and the shift power device 42 drives the shift seat 41 to move horizontally along the track 40 to realize the position switching of the screen saver film peeling unit 2 between the film peeling station and the laminating station.

[0059] In summary, the implementation process of this embodiment is as follows:

[0060] S1. Peel off the film

[0061] 1) Film transmission path planning

[0062] The screen protector film m and release material layer n unwound from the unwinder 10 are transported forward and transferred by the transfer conveyor 12 to form upper and lower transport layers. The release material layer n is then sent to the rewinder 11 for rewinding. The upper layer's transport path includes a film peeling station that is inclined from top to bottom along the forward transport direction.

[0063] 2) Feeding of screen protector film in sequence

[0064] During the unwinding and rolling motion of the release material layer n, the screen protector film m keeps tilting 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;

[0065] 3) Removing the screen protector

[0066] After entering the peeling station, the screen protector film m and the release material layer n are aligned and stopped from being transported forward. Then, the front end of the negative pressure adsorption head 21 of the peeling station is pressed down and adjusted to match the tilt angle of the peeling station, and then adhered to the surface of the screen protector film by negative pressure adsorption. Then, the release material layer n is transported forward. At the same time, the front end of the negative pressure adsorption head 21 is tilted and synchronously driven upward by the peeling power member 23. Therefore, the screen protector film m is gradually peeled off the release material layer n in dynamic balance.

[0067] S2, shift

[0068] The product to be coated is transferred to the laminating station based on the transmission line 3, and at the same time, the shifting power device 42 drives the shifting seat 41 to move laterally along the track 40 to realize the transverse movement of the screen protector film peeling unit 2 from the peeling station to the laminating station, until the peeled screen protector film m is located directly above the laminating station (upper and lower alignment);

[0069] S3, film

[0070] The front end of the negative pressure adsorption head 21 presses down to align and fit the front edge of the screen, and then is transmitted forward by the transmission line 3. As the negative pressure adsorption head 21 successively decompresses or releases pressure (front and back), the screen saver film m gradually detaches from the surface of the negative pressure adsorption head 21. At the same time, the angle adjustment component 22 and the peeling power component 23 synchronously drive the negative pressure adsorption head 21 to move so that the screen saver film m maintains synchronous movement and fit with the changes in the screen surface, and the laminating roller 5 adaptively adheres to the surface of the screen saver after the angle of the negative pressure adsorption head 21 changes, so as to complete the lamination of the screen saver film.

[0071] In this example, during the peeling process of the screen protector film m, based on the decomposition of α = 8°, the vertical components of the suction force exerted by the negative pressure suction head 21 on the screen protector film m and the peeling force exerted by the forward movement of the release material layer n on the screen protector film m are in a state of equilibrium. This force balance is adjusted synchronously with the change in angle, allowing the screen protector film to be gradually peeled off the release material layer while maintaining dynamic equilibrium, thus preventing the screen protector from shifting or damaging its flatness, and improving the lamination quality.

[0072] In addition, during the film application process, the downward pressure provided by the negative pressure adsorption head 21 on the screen and the force provided by the transmission line on the screen in the up and down directions are in a balanced state.

[0073] In summary, after adopting the laminating equipment of the screen protector, first, the film peeling device used forms a dynamic cycle of the release material layer based on the release material layer reeling and unwinding unit, and feeds the screen protector film into the film peeling station one by one. At the same time, based on the negative pressure adsorption head, it tilts downward and fully fits the surface of the screen protector film under the angle adjustment. Then, 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; secondly, based on the shifting unit, the peeled film is horizontally moved to the laminating station; finally, based on the transmission line, the product to be coated is moved It is loaded to the laminating station, and the front end of the negative pressure adsorption head presses down to align and fit the front edge of the screen. Then, it is transmitted forward by the transmission line, and under the pressure reduction or pressure release of the negative pressure adsorption head, the angle adjustment component and the peeling power component synchronously drive the negative pressure adsorption head to move so that the screen protector keeps synchronous movement and fits with the changes in the screen surface, and the laminating roller adapts to the change of the angle of the negative pressure adsorption head to roll the surface of the screen protector after attachment to complete the lamination of the screen protector. Therefore, on the one hand, when tearing the film, the present invention is based on the decomposition of the force formed by the inclined peeling station, combined with the dynamic balance formed by the multiple forces of the screen protector, and gradually performs the movement. The peeling process can reduce the peeling difficulty and avoid the deviation of the screen protector, thereby improving the flatness and state accuracy of the peeled screen protector. At the same time, the release material layer can be dynamically recycled to continuously supply the screen protector. On the other hand, when laminating, the screen protector and the screen are aligned based on the transfer, and when the screen moves forward, the screen protector keeps synchronous movement and fits with the changes in the screen surface. At the same time, the attachment and rolling are carried out synchronously and successively to meet the laminating needs of various screens and increase the practicality of the laminating. Thirdly, based on the decomposition of the force formed by the inclined peeling station, it is more conducive to the peeling of the screen protector in dynamic balance and will not cause The curling of the end head also reduces the deformation rate of the screen protector film or the release material layer, thereby reducing the difficulty of peeling off; fourthly, during the peeling process, the components of force formed 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 in the upper and lower 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 maintains dynamic balance and gradually peels off the release material layer, so as to avoid displacement of the screen protector film or damage to the flatness, and improve the lamination quality; fifthly, the angle formed by the release material layer and the screen protector film and the horizontal plane in the peeling station is α, and α≤15°.At this angle, the screen protector is peeled off smoothly and without deviation while maintaining dynamic balance. Generally, 1° to 5° is optimal. The sixth aspect is that the transfer conveyor includes a plurality of conveying rollers located between the unwinder and the reeler, wherein the plurality of conveying rollers are arranged in the up-down and front-back directions to form a conveying layer. The conveying layer includes a feeding section located on the upper layer and a return section located on 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. The seventh aspect is based on the static eliminator to eliminate the static electricity of the screen protector, thereby further improving the quality of the coating. The design based on the height difference is not only convenient for the implementation of static removal, but also more conducive to the layout of inclined peeling in long transmission lines. Film station, at the same time, with the assistance of the height difference, and combined with the transfer head, transfer roller and transmission roller to form a relatively tensioned suspended inclined film peeling station; the eighth aspect is that the power output direction of the peeling power part and the angle adjustment part is the same, based on the same power direction, to avoid the lifting process due to the tilt of the angle power direction causing movement interference, at the same time based on the cooperation of the sliding and rotation of the front end, the above-mentioned power direction is achieved, and it is kept in a triangular distribution during the downward or upward movement to improve the sensitivity and stability of the angle adjustment; the ninth aspect is to implement angle adjustment around the rear end in the up and down directions of the force through the cooperation of sliding and rotation; based on the design of the pivot, so that For implementing rotation adjustment and installation; the tenth aspect is based on the adsorption holes on the bottom surface of the adsorption head mold being 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 in the shape of circular holes and arranged in an array, and at the same time, the area of ​​the long holes is larger than the area of ​​the circular holes, wherein the area of ​​the long holes is at least 5 to 10 times the area of ​​the circular holes. Here, the long holes and circular holes formed on the head provide different adsorption forces, which is not only convenient for tearing operations, but also for subsequent attachment operations; the eleventh aspect is that the shifting unit adopts conventional rails, shifting seats and shifting power devices, wherein the shifting seat is moved laterally along the rails under the push of the shifting power device. Therefore, The peeled screen protector is sent to the film laminating station to implement high-quality film laminating in a flat and non-deflection mode; the twelfth aspect is based on the follow-up rolling of the laminating roller, so that the film can be laminating and rolling at the same angle, and in the process of laminating, the downward pressure provided by the negative pressure adsorption head on the screen and the force formed by the transmission line on the screen in the up and down directions are in a balanced state. In this way, the film is gradually attached to the screen with the driving of the traction power. At the same time, based on the movement of the product and combined with the adaptability angle and pressure adjustment of the screen protector, the film is gradually laminating and rolling in a synchronous movement that adapts to the changes in the screen to achieve high-quality screen lamination (flat and bubble-free).

[0074] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A screen protector film peeling unit, characterized in that: The screen protector 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 component that drives the peeling seat to move up and down, wherein the power output directions of the peeling power component and the angle adjustment component are the same; the angle adjustment component includes a pivotal part located at the rear end of the negative pressure adsorption head and capable of being rotatably connected to the peeling seat, and an adjustment part for rotating the front end of the negative pressure adsorption head and the peeling seat and slidingly connected along the front-to-back direction, the front and rear ends of the negative pressure adsorption head both rotate synchronously around the horizontal direction, and the front end of the negative pressure adsorption head slides in the front-to-back direction; after each screen protector film moves to the peeling station, the negative pressure adsorption head fully fits 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 component to lift the negative pressure adsorption head upward so that the screen protector film is peeled off from the release material layer in dynamic balance.

2. The screen protection film peeling unit according to claim 1, characterized in that: The adjustment part includes a mounting seat fixed on the negative pressure adsorption head, a slide seat whose lower end is slidably mounted on the mounting seat along the front-back direction, and a power rod mounted on the peeling seat and capable of telescopic movement up and down, wherein the lower end of the power rod and the upper end of the slide seat are rotatably connected.

3. The screen protection film peeling unit according to claim 1, characterized in that: The pivotal portion 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 via bearings.

4. The screen protection film peeling unit 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 and the peeling force provided by the forward movement of the release material layer to the screen protector are in a balanced state.

5. The screen protection film peeling unit 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°.

6. The screen protection film peeling unit according to claim 1, characterized in that: An adsorption cavity is formed inside the negative pressure adsorption head, and the bottom surface constitutes the adsorption surface, wherein a plurality of adsorption holes are distributed on the adsorption surface, and the adsorption surface is divided into a head adsorption area and a body adsorption area in the front-to-back direction, and the adsorption force of the head adsorption area is greater than that of the body adsorption area.

7. The screen protection film peeling unit according to claim 6, characterized in that: The negative pressure adsorption head includes an adsorption head mold and a plate-type adsorption mold aligned with the adsorption head mold, wherein the adsorption cavities of the adsorption head mold and the plate-type adsorption mold are not connected to each other and are arranged in corresponding head adsorption areas and body adsorption areas.

8. The screen protection film peeling unit according to claim 7, characterized in that: The adsorption holes in the head adsorption area are long holes extending along the front-back direction, and a plurality of the long holes are arranged side by side along the left-right direction.

9. The screen protection film peeling unit according to claim 8, characterized in that: The adsorption holes in the main adsorption zone are circular and arranged in an array; and / or the area of ​​the elongated holes is larger than that of the circular holes, and the area of ​​the elongated holes is at least 5 to 10 times that of the circular holes.

10. The screen protection film peeling unit according to claim 1, characterized in that: The screen protector film is tilted synchronously with the release material layer and passes through the film peeling station upward.

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