A screen pasting film device and an automatic film pasting machine

Abstract

The application discloses a screen film pasting device and an automatic film pasting machine, and aims to solve the problems of miniaturization, air bubble discharge and multi-size film adaptation of the self-service film pasting machine. The device comprises a rack, a workbench, a positioning jig, a film pressing assembly and a film lifting part. The upper side of the positioning jig is provided with a clamping area for fixing a mobile phone. The film pressing assembly comprises a flexible film pressing block. The film lifting part can be switched between a lifting state and a falling state. During film pasting, the film lifting part is first lifted to make the front end of the screen film higher than the rear end. The workbench drives the mobile phone and the screen film to move, so that the film pressing block is gradually attached from the rear end to the front end of the screen film and air is extruded. After the attachment is completed, the film lifting part falls to make the film surface flush. The workbench is reset to complete the film pasting. The device has a simple and compact structure, is small in size and suitable for the narrow space of the self-service film pasting machine, does not need complex transmission components, can be suitable for different sizes of mobile phone films, realizes air bubble discharge type film pasting, and improves the user experience and operation efficiency of the self-service film pasting machine.

Description

Technical Field

[0001] This application belongs to the field of screen surface treatment technology, and more specifically, relates to a screen film application device and an automatic film application machine. Background Technology

[0002] With the widespread use of smartphones, the demand for screen protectors is increasing. To improve user experience and operational efficiency, self-service screen protector application machines have appeared in public places such as shopping malls. These machines typically contain a sealed application compartment; after the user places their phone in, the machine automatically completes the cleaning, alignment, and application of the screen protector.

[0003] Because the size of the automatic screen protector applicator cannot be too large, and it also needs to store screen protectors for various mobile phones, the internal components of the automatic screen protector applicator need to be relatively small and capable of bubble-removing screen protector application. Summary of the Invention

[0004] The purpose of this application is to provide a screen protector applicator and an automatic screen protector applicator to solve the technical problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a screen protector application device is provided, characterized in that it includes: a frame; a worktable, which is horizontally slidably disposed on the frame; a positioning fixture disposed on the worktable, the upper side of the positioning fixture being a clamping area; a film pressing assembly disposed on the frame, the film pressing assembly being located above the positioning fixture, the film pressing assembly including a film pressing block for abutting the screen protector, the worktable in the moving state causing the film pressing block to move from the rear end to the front end of the screen protector to complete the film application; and a film lifting member disposed on the positioning fixture, the film lifting member being used to cooperate with the front end of the screen protector, the film lifting member sequentially entering a lifting state and a falling state during one film application action, in the lifting state making the front end of the screen protector higher than the rear end, and in the falling state making the front end of the screen protector flush with the rear end.

[0006] Optionally, the lifting device includes a lifting block and a film control unit. The lifting block is slidably disposed on the positioning fixture. The upper surface of the lifting block is used to abut against the front end of the screen film. The sliding direction of the lifting block is vertical. The film control unit is connected to the lifting block and is used to control the lifting and lowering of the lifting block.

[0007] Optionally, the membrane control is a spring.

[0008] Optionally, the membrane control is a spring.

[0009] Optionally, the lifting element is a block made of elastic material, and the upper surface of the lifting element is used to abut against the front exposed part of the screen film.

[0010] Optionally, the lifting element is disposed in the positioning fixture on the positioning part at the front end of the display device.

[0011] Optionally, the positioning fixture includes a placement seat, a front clamp, a side clamp, and an opening / closing drive assembly. The placement seat is disposed on the worktable, and its upper surface has a storage slot for accommodating a mobile phone. The front clamp is horizontally slidably disposed in the storage slot, with its sliding direction parallel to the movement direction of the worktable. The front clamp is used to abut against the front end of the display device, serving as the positioning part in the positioning fixture. The side clamp is horizontally slidably disposed in the storage slot, with its sliding direction perpendicular to the movement direction of the front clamp. Multiple side clamps are provided, divided into two groups, each group abutting against one or both sides of the display device. The opening / closing drive assembly is connected to the front clamp and the side clamps, used to move the front clamp and the side clamps closer to or further away from the display device.

[0012] Optionally, the placement seat is provided with a drive receiving cavity, which is used for the opening and closing drive assembly; the bottom of the placement slot is provided with a transmission hole communicating with the drive receiving cavity; the opening and closing drive assembly includes a lateral drive belt and a forward drive belt, the two sides of the lateral drive belt are respectively connected to the two side clamps, and one side of the forward drive belt is connected to the front clamp.

[0013] Optionally, the pressing block is a roller; the pressing assembly further includes a pressing linear module, a pressing frame, and a pressure-holding spring. The pressing linear module is mounted on the frame, and its output end moves vertically. The pressing frame is vertically slidably connected to the output end of the pressing linear module, and the pressing frame allows the pressing block to rotate. The pressure-holding spring is connected to the pressing frame and the output end of the pressing linear module, respectively, to allow the pressing block to press against the screen film with a predetermined pressure.

[0014] An automatic screen protector applicator includes the screen protector applicator described above.

[0015] The beneficial effects of the screen protector application device and automatic screen protector application machine provided in this application are as follows: Compared with the prior art, this application combines the frame, worktable, positioning fixture, film pressing component and film lifting component, etc., and the overall structure is simple and compact. The layout of each component is reasonable, which effectively reduces the overall volume of the device and can be adapted to the narrow installation space inside the self-service screen protector application machine, thus meeting the design requirements of the self-service screen protector application machine to be small in size. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional structural diagram of a screen protector application device and an automatic screen protector application machine provided in the embodiments of this application; Figure 2 This is a schematic diagram of the three-dimensional structure of the workbench provided in the embodiments of this application; Figure 3 This is a three-dimensional structural diagram of the internal structure of the drive receiving cavity provided in an embodiment of this application; Figure 4 A three-dimensional structural schematic diagram of the opening and closing drive component provided in an embodiment of this application; Figure 5 This is a three-dimensional structural diagram of the pressure film assembly provided in the embodiments of this application.

[0018] The following are the labeling elements in the figure: 1. Frame; 2. Workbench; 3. Positioning fixture; 31. Placement seat; 311. Storage slot; 3111. Transmission hole; 312. Drive cavity; 32. Front clamping block; 33. Side clamping block; 34. Opening and closing drive assembly; 341. Lateral transmission belt; 342. Forward transmission belt; 4. Film pressing assembly; 41. Film pressing block; 42. Film pressing linear module; 43. Film pressing frame; 44. Pressure holding spring; 5. Film lifting component; 51. Film lifting block; 52. Film control unit. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] The present application will now describe a screen protector application device according to an embodiment of the present application.

[0024] See Figure 1 The screen protector application device includes a frame 1, a worktable 2, a positioning fixture 3, a film pressing assembly 4, and a film lifting component 5. Specifically, the worktable 2 is horizontally slidably mounted on the frame 1 and can reciprocate along the horizontal direction of the frame 1. The power for the sliding of the worktable 2 is provided by a motor lead screw linear module. The positioning fixture 3 is fixedly installed on the worktable 2 and moves horizontally synchronously with the worktable 2. The upper side of the positioning fixture 3 is provided with a clamping area for placing the mobile phone to be applied, so as to clamp and fix the mobile phone in the predetermined position of the positioning fixture 3.

[0025] See Figure 1 The film-pressing assembly 4 is mounted on the frame 1, above the positioning fixture 3. The film-pressing assembly 4 includes a film-pressing block 41 for abutting the screen film. The part of the film-pressing block 41 that contacts the phone screen is made of a flexible material, such as a rubber roller, to avoid damaging the screen film. Simultaneously, in conjunction with the moving worktable 2, the film-pressing block 41 moves from the rear end to the front end of the screen film to complete the film application. The front and rear ends are defined using the phone as a reference point. Specifically, the top of the screen (where the front-facing camera is located) is considered the front end, and the bottom of the screen (where the charging port is located) is considered the rear end.

[0026] See Figure 1The lifting element 5 is mounted on the positioning fixture 3. The lifting element 5 is used to cooperate with the front exposed part of the screen film, which refers to the front protective film step of the screen film. During one film application action, the lifting element 5 sequentially enters a lifting state and a lowering state. In the lifting state, the front of the screen film is higher than the back, and in the lowering state, the front of the screen film is flush with the back.

[0027] Reference Figure 2 Before the screen protector application begins, the phone to be covered is placed on the clamping area of ​​the positioning fixture 3 and the phone is positioned and fixed. Then, the screen protector is placed on top of the phone screen, and the positioning fixture 3 is moved to the starting position of the screen protector application.

[0028] After the screen protector application begins, the worktable 2 moves the positioning fixture 3 backward, causing the pressure block 41 to move from the rear end of the screen protector to the front end. During this process, the lifting component 5 is initially in a raised state, making the front end of the screen protector higher than the rear end. The screen protector will have a certain tilt angle, so the bonding direction of the screen protector will be from the rear end to the front end. This prevents the two ends of the screen protector from bonding first and the middle from bonding later, thus achieving the air bubble removal type of screen protector application.

[0029] As the pressure block 41 gradually approaches the front end of the screen film, the bending radius of the screen film will gradually increase. In order to prevent the screen film from being broken, after the pressure block 41 is at a predetermined distance from the front end of the screen film, the lifting member 5 is in a falling state, so that the front end and the back end of the screen film are flush, thereby achieving air bubble removal when applying the screen film without damaging it.

[0030] In summary, based on the complete film application process, it can be seen that the worktable 2 simply makes a linear motion, the film pressing block 41 is stationary relative to the frame 1, and the film lifting component 5 only makes a simple vertical motion while following the positioning fixture 3. Therefore, the movement mode of the components is simple and the movement stroke is small, which can reduce the installation space required for the device and thus better adapt it to the automatic film application machine.

[0031] Based on the above description and reference Figure 3 The core function of the lifting device 5 is to lift and lower the screen film during the application process. The lifting and lowering actions can be achieved in two ways: one is through the coordinated action of the various components in the lifting device 5, and the other is through the inherent structural characteristics of the lifting device 5.

[0032] If the lifting film component 5 is implemented by coordinating the actions of its various elements, then the lifting film component 5 can include a lifting film block 51 and a film control unit 52. The lifting film block 51 is slidably mounted on the positioning fixture 3, and is vertically slidable, with its upper surface abutting against the front exposed portion of the screen film. The film control unit 52 is connected to the lifting film block 51 and is used to control the lifting and lowering actions of the lifting film block 51.

[0033] More specifically, the membrane control device 52 can be divided into two categories: those without a power source and those with a power source. Those without a power source refer to those that do not rely on external power input and instead utilize natural forces such as elasticity and gravity or external force transmission to achieve movement. In this application, elasticity is needed to lift and lower the membrane block 51. The membrane control device 52 can be an elastic block, a spring, or a spring. Considering both structural simplicity and low cost, a spring is preferred for the membrane control device 52 without a power source.

[0034] Since the membrane control 52 is a spring, when the pressure block 41 is located at the rear end of the screen film, the spring will naturally lift the front end of the screen film by lifting the membrane block 51. When the pressure block 41 is a predetermined distance away from the front end of the screen film, the spring will be compressed, causing the lifting block 51 to fall and make the front end of the screen film flush with the rear end. At the same time, since the lifting block 51 is always in a raised state in its natural state, that is, before any action is performed, the operation of each component in the screen protector application device can be more smoothly coordinated.

[0035] Having a power source refers to relying on external power input, such as cylinders, motors, or other power devices, and being able to actively output driving force. This is suitable for film application scenarios that require high precision and stability in motion. In this application, linear driving force is needed to achieve the lifting and lowering of the film block 51. The film control unit 52 needs to be a power source that can output mechanical energy for linear motion, such as cylinders, electric cylinders, hydraulic cylinders, and linear modules. Considering both structural simplicity and low cost, the film control unit 52 with a power source is preferably a linear module driven by a lead screw.

[0036] Since the membrane control 52 is powered, when the pressing block 41 is located at the rear end of the screen film, the membrane control 52 needs to move the lifting block 51 upward to lift the front end of the screen film. When the pressing block 41 is a predetermined distance away from the front end of the screen film, the membrane control 52 needs to move the lifting block 51 downward to make the lifting block 51 fall so that the front end of the screen film is flush with the rear end. If the inherent structural characteristics of the lifting film component 5 are adopted, it is necessary to utilize material properties or special construction to achieve this. For example, the properties of elastic materials such as silicone and rubber can be utilized, as well as the properties of special constructions such as arc-shaped, folded, and honeycomb shapes. Both methods can generate elastic force to lift the screen film. Considering both structural simplicity and low cost, in this application, the lifting film component 5 is preferably a block made of elastic material. Since the working process of the lifting film component 5 is the same as the working process of the film control component 52 as a spring, it will not be described again here.

[0037] In summary, in this embodiment, considering that the film application device is to be used in an automatic film application machine, it is preferable that the film lifting component 5 is a block made of elastic material.

[0038] Due to the different sizes of mobile phones, the position of the front end of the mobile phone may or may not change after the positioning fixture 3 completes the clamping and positioning process. However, the lifting film component 5 must be matched with the front end of the mobile phone. Therefore, considering the simplicity of the device structure, it is preferable to set the lifting film component 5 on the positioning part that abuts against the front end of the mobile phone in the positioning fixture 3. The reason is that if the position of the front end of the mobile phone changes, the position of the positioning part will also change. Therefore, by directly setting the lifting film component 5 on the positioning part, it is easier to make the lifting film component 5 adapt to mobile phones of different sizes.

[0039] See Figure 4 As mentioned above, the positioning fixture 3 needs to fix and position the mobile phone. Considering the simplicity of the structure of the positioning fixture 3, the mobile phone is clamped and positioned by three-sided movement and one-sided fixation. Since the worktable 2 moves backward when applying the film, in order to facilitate the control of the time when the film pressing block 41 starts to contact the screen film, the rear side is fixed and the front and left and right sides move for positioning.

[0040] Specifically, the positioning fixture 3 includes a placement base 31, a front clamping block 32, a side clamping block 33, and an opening and closing drive assembly 34. The placement base 31 is fixedly mounted on the worktable 2. A storage slot 311 is formed on the upper surface of the placement base 31 to accommodate the mobile phone. The slot size is designed according to common mobile phone sizes and can accommodate most different mobile phone models. The front clamping block 32 is installed in the storage slot 311 using a horizontal sliding structure. The sliding direction is parallel to the movement direction of the worktable 2. The front clamping block 32 will abut against the front end of the mobile phone. As the positioning part of the aforementioned positioning fixture 3, specifically, the lifting film component 5 is installed on the upper surface of the front clamping block 32. In addition, the rear end of the mobile phone will abut against the rear side wall of the storage slot 311 for clamping and positioning in the back-to-back direction.

[0041] The side clamping block 33 is also installed in the storage slot 311 using a horizontal sliding structure. The sliding direction is perpendicular to the front clamping block 32 (along the left and right direction). There are multiple side clamping blocks 33, which are divided into two groups and symmetrically distributed on the left and right sides of the storage slot 311. The number of each group can be flexibly set to 1-2 according to the width of the mobile phone. The surfaces of the side clamping blocks 33 that are close to each other abut against the side of the mobile phone to achieve clamping and limiting in the left and right directions.

[0042] The opening and closing drive assembly 34 is connected to the front clamping block 32 and the side clamping blocks 33 respectively. Its main function is to drive the front clamping block 32 and the side clamping blocks 33 to move closer to or further away from the phone to achieve clamping and releasing actions. After the phone is placed in, the front clamping block 32 is driven to slide backward to abut against the front end of the phone, while the two sets of side clamping blocks 33 are driven to slide inward to abut against the sides of the phone, completing the clamping and positioning. After the screen protector is applied, the assembly reverses the drive to reset each clamping block and release the phone for easy removal. In addition, the opening and closing drive assembly 34 can be adapted to different sized phones by adjusting the drive stroke. For large-sized phones, the sliding stroke is increased to ensure moderate clamping force, and for small-sized phones, the stroke is reduced to avoid excessive clamping and damage to the equipment, meeting the screen protector application needs of automatic screen protector applicators for various phone sizes and improving the versatility of the device.

[0043] To further simplify the structure of the storage slot 311, the following features are provided: a drive receiving cavity 312 is provided inside the placement base 31. The drive receiving cavity 312 provides installation space for the opening and closing drive assembly 34, allowing the drive component to be built into the placement base 31, avoiding exposure to the external environment, and reducing the overall volume of the positioning fixture 3. A transmission hole 3111 is provided at the bottom of the storage slot 311, communicating with the drive receiving cavity 312. The position of the transmission hole 3111 corresponds to the installation position of the front clamping block 32 and the side clamping block 33, providing a channel for the transmission structure.

[0044] Meanwhile, the opening and closing drive assembly 34 includes a lateral drive belt 341 and a forward drive belt 342, both of which are disposed within the drive receiving cavity 312. The lateral drive belt 341 is wound in a ring around two lateral drive pulleys within the drive receiving cavity 312, and both sides of the belt are connected to two sets of side clamping blocks 33 one-to-one via connectors passing through the drive holes 3111. When the lateral drive belt 341 rotates under the drive source, the two sides of the belt move in opposite directions, thereby causing the two sets of side clamping blocks 33 to move synchronously closer or further away in a direction perpendicular to the movement of the worktable 2, thus clamping or releasing the two sides of the display device. This transmission method ensures the synchronicity of the movement of the two sets of side clamping blocks 33, ensuring that the positioning center of the display device is always consistent in the left-right direction, and improving positioning accuracy.

[0045] The forward drive belt 342 is wound in a ring around two forward drive pulleys inside the drive receiving cavity 312. One side of the belt is connected to the front clamping block 32 through a connector passing through the corresponding drive hole 3111. When the forward drive belt 342 rotates under the drive source, the belt drives the front clamping block 32 to slide in a direction parallel to the movement of the worktable 2, thereby abutting or releasing the front end of the display device.

[0046] The forward drive belt 342 and the side drive belt 341 are driven independently, and the movement of the front clamp 32 and the side clamp 33 can be controlled separately to adapt to the positioning requirements of display devices of different sizes.

[0047] By cooperating with the drive cavity 312 and the transmission hole 3111, the transmission structure of the opening and closing drive assembly 34 is cleverly hidden inside the placement seat 31. This ensures the compactness of the positioning fixture 3 and avoids direct contact between the transmission components and the display device. At the same time, the belt drive has the characteristics of smooth transmission and low noise, which can improve the operational stability and service life of the positioning fixture 3 and further adapt to the internal environment requirements of the automatic film applicator.

[0048] See Figure 5 Due to the varying thicknesses of mobile phones, the pressure plate 41 needs to be positioned at different heights. However, the pressure plate 41 requires a certain amount of pressure to adhere the screen protector to the phone screen. Since the phone screen undergoes cleaning before the screen protector is applied, the pressure plate 41 does not contact the phone screen before the screen protector is placed. Therefore, the pressure plate 41 also needs to be able to move away from the height of the phone screen. Correspondingly, the pressure plate assembly 4 includes a pressure plate linear module 42, a pressure plate holder 43, and a pressure-holding spring 44. The pressure plate linear module 42 is fixed to the frame 1, and its output end can reciprocate vertically, providing lifting power for the pressure plate 41. By controlling the stroke of the output end, the pressure plate 41 can be moved into or out of the height of the phone screen.

[0049] The output end of the film pressing frame 43 and the film pressing linear module 42 are vertically slidably connected. The roller-type film pressing block 41 is rotatably mounted on the film pressing frame 43, so that the film pressing block 41 can rise and fall synchronously with the film pressing frame 43, while also being able to roll freely. The two ends of the pressure holding spring 44 are respectively connected to the output end of the film pressing frame 43 and the film pressing linear module 42. At the same time, when the film pressing block 41 abuts against the screen film, the pressure holding spring 44 is in a compressed state, thus enabling the film pressing block 41 to adapt to mobile phones of different thicknesses within a predetermined pressure range.

[0050] This application also provides an automatic screen protector applicator. The automatic screen protector applicator includes the screen protector applicator described above. The specific structure of the screen protector applicator is described in the foregoing embodiments and will not be repeated here.

[0051] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A screen protector application device, characterized in that, include: Rack (1); The workbench (2) is horizontally slidably mounted on the frame (1); A positioning fixture (3) is set on the workbench (2), and the upper side of the positioning fixture (3) is a clamping area; A film pressing assembly (4) is disposed on the frame (1). The film pressing assembly (4) is located above the positioning fixture (3). The film pressing assembly (4) includes a film pressing block (41) for abutting the screen film. The worktable (2) in the moving state causes the film pressing block (41) to move from the rear end of the screen film to the front end to complete the film application. A lifting film component (5) is disposed on the positioning fixture (3). The lifting film component (5) is used to cooperate with the front end of the screen film. The lifting film component (5) enters a lifting state and a falling state in sequence during one film application action. In the lifting state, the front end of the screen film is higher than the rear end. In the falling state, the front end of the screen film is flush with the rear end.

2. The screen protector application device as described in claim 1, characterized in that: The lifting device (5) includes a lifting block (51) and a film control (52). The lifting block (51) is slidably disposed on the positioning fixture (3). The upper surface of the lifting block (51) is used to abut against the front end of the screen film. The sliding direction of the lifting block (51) is vertical. The film control (52) is connected to the lifting block (51) and is used to control the lifting and lowering of the lifting block (51).

3. The screen protector application device as described in claim 2, characterized in that: The membrane control (52) is a spring.

4. The screen protector application device as described in claim 2, characterized in that: The membrane control unit (52) is a power source that outputs mechanical energy with linear motion.

5. The screen protector application device as described in claim 1, characterized in that: The lifting film member (5) is a block made of elastic material, and the upper surface of the lifting film member (5) is used to abut against the front exposed part of the screen film.

6. The screen protector application device as described in claim 5, characterized in that: The lifting film component (5) is disposed in the positioning fixture (3) and is used to abut against the positioning part at the front end of the display device.

7. The screen protector application device as described in claim 6, characterized in that: The positioning fixture (3) includes a placement seat (31), a front clamp (32), a side clamp (33), and an opening and closing drive assembly (34). The placement seat (31) is disposed on the worktable (2), and a storage slot (311) is provided on the upper surface of the placement seat (31) for accommodating and placing a mobile phone. The front clamp (32) is horizontally slidably disposed in the storage slot (311), and the sliding direction of the front clamp (32) is parallel to the movement direction of the worktable (2). The front clamp (32) is used to abut against the front end of the display device, so that the front clamp (32) acts as a contact point. The positioning part is the positioning fixture (3); the side clamp (33) is horizontally slidably disposed in the storage groove (311), the sliding direction of the side clamp (33) is perpendicular to the movement direction of the front clamp (32), and multiple side clamps (33) are provided, which are divided into two groups, and the two groups of side clamps (33) are used to abut against the two sides of the display device respectively; the opening and closing drive assembly (34) is connected to the front clamp (32) and the side clamp (33) to make the front clamp (32) and the side clamp (33) move closer to or further away from the display device.

8. The screen protector application device as described in claim 7, characterized in that: The placement seat (31) is provided with a drive receiving cavity (312), which is provided for the opening and closing drive assembly (34); the bottom of the storage slot (311) is provided with a transmission hole (3111) communicating with the drive receiving cavity (312); the opening and closing drive assembly (34) includes a lateral drive belt (341) and a forward drive belt (342), the two sides of the belt in the lateral drive belt (341) are respectively connected to the two side clamps (33), and one side of the belt in the forward drive belt (342) is connected to the front clamp (32).

9. The screen protector application device as described in claim 1, characterized in that: The pressing block (41) is a roller; the pressing assembly (4) also includes a pressing linear module (42), a pressing frame (43), and a pressure holding spring (44). The pressing linear module (42) is mounted on the frame (1), and the output end of the pressing linear module (42) moves vertically. The pressing frame (43) is vertically slidably connected to the output end of the pressing linear module (42), and the pressing frame (43) allows the pressing block (41) to rotate. The pressure holding spring (44) is connected to the pressing frame (43) and the output end of the pressing linear module (42) respectively, and is used to make the pressing block (41) press against the screen film with a predetermined pressure.

10. An automatic film applicator, characterized in that: Includes the screen protector device according to any one of claims 1-9.

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