Universal dust-free rolling film pasting device

Abstract

The utility model relates to the technical field of film pasting devices, in particular to a universal dust-free rolling film pasting device which comprises a base body, an adaptive groove is formed in the base body, a positioning base is detachably arranged in the adaptive groove in a sleeved mode, a positioning structure used for positioning a screen to be pasted with a film is arranged on the positioning base, and a positioning column is further installed on the base body. The positioning columns are sleeved with protective film fixing pieces in a positioning mode, the protective film fixing pieces are used for fixing a protective film, the protective film fixing pieces support the protective film to be arranged above the positioning base through the positioning columns, a push block is further connected to the base body in a sliding mode, and a roller is installed on the push block. The roller wheel is pushed by the push block to roll the protective film on the protective film fixing sheet in all directions; the positioning base with a specific structure only needs to be customized for screens with different sizes, so that the complexity and the cost of die design of film sticking devices with different sizes are greatly reduced; it means that in the production process, it is not needed to independently develop a whole set of mold for each screen size.

Description

Technical Field

[0001] This utility model relates to the field of film applicator technology, and in particular to a universal dust-free rolling film applicator. Background Technology

[0002] In today's digital age, screen protection for electronic devices such as mobile phones and tablets is crucial. As an accessory that effectively protects the screen from scratches, smudges, and fingerprints, the quality of screen protector application directly affects the user experience. To improve application quality, various screen protector applicators have emerged in the current technology.

[0003] These screen protector applicators work by precisely positioning the screen and the protective film onto the applicator using a specific structure. During application, the release liner is peeled off in reverse, ensuring a tight seal between the adhesive side of the protective film and the screen when exposed to air, reducing the likelihood of dust adhesion. Then, rollers press the protective film onto the screen, achieving a dust-free rolling application. Compared to traditional manual application, this method significantly improves the quality and efficiency of the application, effectively reducing the probability of air bubbles, wrinkles, and other problems during the process.

[0004] However, with the increasing diversification of the electronic device market, the screens to be applied to different models vary significantly in size. For example, mobile phone screens from different brands not only differ in length and width, but also in curvature, corner radius, and other characteristics. Existing screen protector applicators are typically designed for specific screen sizes or a few fixed size ranges, and their positioning structures lack sufficient flexibility, making it impossible to easily and quickly adjust to changes in screen size. This often results in users needing to purchase different sized applicators for different electronic device models, increasing usage costs and inconvenience, and limiting the universality and market application range of screen protectors.

[0005] Therefore, developing a screen protector applicator that can flexibly adapt to the size differences of different screen models is of great practical significance and market demand. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] A universal dust-free rolling film applicator includes a substrate with an adapter groove. A positioning base is detachably fitted inside the adapter groove. The positioning base has a positioning structure for positioning the screen to be covered. A positioning post is also installed on the substrate, and a protective film fixing piece is positioned on the positioning post. The protective film fixing piece is used to fix the protective film. The protective film fixing piece supports the protective film above the positioning base through the positioning post. A push block is also slidably connected to the substrate. A roller is installed on the push block. The roller rolls the protective film on the protective film fixing piece in all directions by pushing the push block.

[0008] Preferably, the positioning base has multiple evenly distributed first protrusions around its periphery, and the positioning base is positioned in the adapter groove by the multiple first protrusions.

[0009] Preferably, the lower end of the positioning base is also formed with at least one second protrusion, and a positioning hole corresponding to the second protrusion is provided at the bottom of the adapter groove, so that the positioning base can be positioned and engaged with the adapter groove by the docking of the second protrusion and the positioning hole.

[0010] Preferably, the positioning structure is a groove structure formed on the positioning base, and a hand grip portion is also provided at one end of the groove structure to facilitate the picking and placing of the screen to be covered.

[0011] Preferably, the positioning post has a stepped section, and after the protective film fixing piece is sleeved on the positioning post, it is raised above the positioning base through the stepped section.

[0012] Preferably, guide strips are provided on both sides of the substrate, and extensions that connect to the sides of the substrate are formed on both sides of the push block. At least one limiting part that abuts against the lower end of the guide strip is formed on the extension. The push block is slidably connected to the substrate by the abutting cooperation between the limiting part and the guide strip.

[0013] Preferably, the extension has two limiting parts formed on it, and the limiting parts are cylindrical in shape.

[0014] Preferably, a snap-fit ​​portion corresponding to the end of the guide strip is provided on both sides of the base. The snap-fit ​​portion is configured to snap-fit ​​with the limiting portion, and a notch portion is provided on the guide strip for the limiting portion to extend out. When one of the limiting portions on the extension portion snaps into the snap-fit ​​portion, the other limiting portion of the extension portion corresponds to the notch portion, so that the push block can be flipped on the base in a snap-fit ​​manner with the limiting portion and the snap-fit ​​portion engaging.

[0015] Preferably, the push block is provided with a first shaft connecting part and a second shaft connecting part, both of which are dovetail groove structures. The roller has rotating shafts at both ends, and the roller engages with the first or second shaft connecting part via the rotating shafts; wherein:

[0016] When the rotating shaft part is engaged with the first shaft connecting part, the rolling direction of the roller is perpendicular to the axis direction of the roller, so that the roller generates rolling friction with the protective film fixing piece during the rolling process;

[0017] When the rotating shaft part and the second shaft connecting part are engaged, there is an offset angle between the rolling direction of the roller and the axial direction of the roller, so that the roller generates sliding friction with the protective film fixing plate during the rolling process.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] From a manufacturing perspective, its unique detachable design of the base and positioning base offers significant advantages. Since only a specific positioning base structure needs to be customized for different screen sizes, the complexity and cost of designing molds for different screen protector sizes are greatly reduced. This means that during production, there is no need to develop a complete set of molds for each screen size; only the positioning base needs to be specifically designed and manufactured, significantly reducing mold development costs. Simultaneously, components such as the base, rollers, and push blocks can be standardized for production and stockpiled. Later, based on the market demand for different screen sizes, simply by flexibly matching the corresponding positioning base, a suitable screen protector can be quickly assembled, greatly improving production efficiency and reducing the risk of inventory backlog. In terms of market responsiveness, when new screen models are launched, they can be quickly deployed based on existing... By utilizing existing components and a newly designed positioning base, matching screen protector applicators can be quickly manufactured to meet market demands and enhance the product's competitiveness. In terms of application, the protective film is pre-attached to a fixing plate and precisely positioned using positioning posts. This adaptable design accommodates different sizes of protective films, and the reverse tear strip on the release film ensures dust-free application, effectively improving application quality. The push block and rollers provide omnidirectional rolling pressure, ensuring a uniform and tight fit to the screen, significantly reducing common issues like bubbles and wrinkles, further improving application efficiency and quality. Furthermore, the substrate and positioning base can be made from different materials, providing greater flexibility and optimization space for product design, enhancing the product's practicality and adaptability from multiple dimensions.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the push block in the open state in this utility model.

[0025] The reference numerals and names in the figure are as follows:

[0026] Base 10, adapter groove 11, positioning post 12, positioning hole 13, step part 14, guide strip 15, snap-fit ​​part 16, notch part 17, positioning base 20, positioning structure 21, first protrusion 22, second protrusion 23, hand buckle part 24, protective film fixing piece 30, push block 40, extension part 41, limiting part 42, first shaft connecting part 43, second shaft connecting part 44, roller 50, rotating shaft part 51. Detailed Implementation

[0027] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Please see Figure 1-3 In this embodiment of the utility model, a universal dust-free rolling film applicator includes a base 10, an adapter groove 11 is provided on the base 10, a positioning base 20 is detachably fitted in the adapter groove 11, a positioning structure 21 for positioning the screen to be applied is provided on the positioning base 20, a positioning post 12 is also installed on the base 10, a protective film fixing piece 30 is positioned and fitted on the positioning post 12, the protective film fixing piece 30 is used to fix the protective film, the protective film fixing piece 30 is supported by the positioning post 12 and placed above the positioning base 20, a push block 40 is also slidably connected on the base 10, a roller 50 is installed on the push block 40, the roller 50 rolls the protective film on the protective film fixing piece 30 in all directions by the push of the push block 40.

[0029] In the above technical solution, the protective film is already bonded to the protective film fixing piece 30 before leaving the factory. To achieve the requirement of dust-free bonding, a reverse-tearable strip is connected to the release film of the protective film. During use, the screen to be bonded is first positioned on the positioning base 20 by the positioning structure 21, and then the protective film is positioned on the base 10 by the positioning post 12 and the positioning cooperation of the protective film fixing piece 30, so that the protective film and the screen to be bonded are positioned and cooperated. Then, by pulling the strip, the release film is reversed from the protective film fixing piece 30. Peel off the protective film. At this time, the adhesive side of the protective film will fit tightly with the screen to be covered. Finally, push the push block 40 so that the roller 50 on the push block 40 rolls from one end of the protective film fixing piece 30 to the other end. At this time, the protective film will be attached to the screen to be covered by the roller 50 rolling from one end to the other. After the film is covered, the protective film fixing piece 30 will be peeled off the protective film. After removing the protective film fixing piece 30, the screen with the protective film attached can be removed from the film applicator.

[0030] Based on the above technical solution, from a manufacturing perspective, its unique detachable design of the base 10 and positioning base 20 offers significant advantages. Since only the positioning base 20 with a specific structure needs to be customized for different screen sizes, the complexity and cost of designing molds for different screen protector sizes are greatly reduced. This means that during production, it is not necessary to develop a complete set of molds for each screen size; only the positioning base 20 needs to be specifically designed and manufactured, significantly reducing mold development costs. Simultaneously, components such as the base 10, rollers 50, and pusher 40 can be standardized for production and stored in inventory. Later, based on the market demand for different screen sizes, simply by flexibly matching the corresponding positioning base 20, a suitable screen protector can be quickly assembled, greatly improving production efficiency and reducing the risk of inventory backlog. In terms of market responsiveness, when new screen models are launched, [the system can quickly adapt to the market]. By quickly utilizing existing inventory components and incorporating the newly designed positioning base 20, a matching screen protector applicator was rapidly manufactured to meet market demands and enhance the product's competitiveness. In terms of the application process, the protective film is pre-attached to the protective film fixing plate 30 and precisely positioned using the positioning post 12. This allows for adaptation to different sizes of protective films, and the reverse tear strip on the release film ensures dust-free application, effectively improving application quality. The pusher block 40 pushes the roller 50 to roll the protective film in all directions, ensuring a uniform and tight fit to the screen, significantly reducing common problems such as bubbles and wrinkles, further improving application efficiency and quality. Furthermore, the base 10 and positioning base 20 can be made of different materials, providing greater flexibility and optimization space for product design, enhancing the product's practicality and adaptability from multiple dimensions.

[0031] Please refer to Figure 2Based on the above technical solution, it is further proposed that the positioning base 20 is provided with a plurality of evenly distributed first protrusions 22 around its periphery. The positioning base 20 is positioned in the adapter groove 11 by the plurality of first protrusions 22. The plurality of evenly distributed first protrusions 22 can apply a clamping force to the positioning base 20 from multiple directions around its periphery, ensuring that the positioning base 20 is firmly embedded in the adapter groove 11, preventing displacement due to external force during the film application process, thereby ensuring the accuracy of the positioning of the screen to be applied and the protective film, and improving the film application quality. The lower end of the positioning base 20 is also formed with at least one second protrusion 23. A positioning hole 13 corresponding to the second protrusion 23 is provided at the bottom of the adapter groove 11, so that the positioning base 20 can be positioned and engaged with the adapter groove 11 by the docking of the second protrusion 23 and the positioning hole 13. This design enhances the positioning accuracy of the positioning base 20 in the adapter groove 11, which can not only effectively avoid the wobbling of the positioning base 20 in the horizontal direction, but also achieve precise positioning in the vertical direction, making the engagement between the positioning base 20 and the adapter groove 11 more tight and stable. This multi-dimensional positioning method allows the positioning base 20 to be installed more accurately and reliably in the adapter groove 11 of the base 10 when adapting to screens of different sizes, which greatly improves the stability and versatility of the entire screen protector structure and provides a solid structural guarantee for achieving high-quality and high-efficiency screen protector application.

[0032] Please refer to Figure 1-3 Based on the above technical solution, the positioning structure 21 is further proposed to be a groove structure opened on the positioning base 20, and a handle part 24 is opened at one end of the groove structure to facilitate the picking and placing of the screen to be applied. The groove structure is designed to fit closely with the edge of the screen to be applied, providing a stable and accurate positioning method for screens of different sizes, ensuring that the screen always maintains the correct position during the application process, avoiding problems such as bubbles and displacement caused by positioning deviation, and effectively guaranteeing the quality of the application. The handle part 24 greatly improves the convenience of user operation. When placing or removing the screen to be applied, the user can easily apply force through the handle part 24. Especially for some larger or tightly fitted screens, the handle part 24 can effectively reduce the difficulty of operation, reduce the risk of damage to the screen or the screen protector caused by improper picking and placing of the screen, significantly improve the user experience, make the application process more efficient and smooth, and further enhance the practicality and ease of use of the entire screen protector.

[0033] Please refer to Figure 1-2Based on the above technical solution, a step portion 14 is further proposed on the positioning post 12. After the protective film fixing piece 30 is sleeved on the positioning post 12, it is raised above the positioning base 20 through the step portion 14. The presence of the step portion 14 provides precise height positioning for the protective film fixing piece 30, ensuring that a suitable distance is maintained between the protective film and the screen to be filmed on the positioning base 20. This avoids the protective film from prematurely contacting the screen and getting dusty or accidentally sticking, and also leaves sufficient space for the reverse tearing operation of the release film, which is conducive to achieving dust-free bonding. At the same time, this height setting ensures that when the push block 40 pushes the roller 50 to roll the protective film, the roller 50 can contact the protective film at the optimal angle and force, so that the protective film is evenly and tightly bonded to the screen, effectively reducing the generation of bubbles, wrinkles and other problems, and greatly improving the quality and efficiency of film application. Moreover, this raised design based on the step portion 14 is simple and reliable, without the need for complex structures or additional operations, further optimizing the overall performance and practicality of the film applicator.

[0034] Please refer to Figure 2-3Based on the above technical solution, it is further proposed that guide strips 15 are provided on both sides of the substrate 10, and extension portions 41 that connect to the sides of the substrate 10 are formed on both sides of the push block 40. At least one limiting portion 42 that abuts against the lower end of the guide strip 15 is formed on the extension portion 41. The push block 40 is slidably connected to the substrate 10 through the abutting cooperation between the limiting portion 42 and the guide strip 15. The guide strips 15 on both sides of the substrate 10 abut against the limiting portion 42 on the extension portion 41 of the push block 40, providing a precise and stable guiding path for the sliding of the push block 40, ensuring that the push block 40 always maintains a straight movement during the process of pushing the roller 50 to roll the protective film, ensuring that the protective film is subjected to uniform force, and greatly improving the flatness and bonding quality of the film. The preferred technical solution has two limiting parts 42 formed on the extension 41, and the limiting parts 42 are cylindrical structures. This not only enhances the stability of the push block 40 when sliding, but also lays the foundation for subsequent structural optimization. That is, through the design of the cylindrical structure, the technical solution has been further optimized. By providing locking parts 16 corresponding to the ends of the guide strip 15 on both sides of the base 10, the locking parts 16 are configured to lock and engage with the limiting parts 42. The guide strip 15 also has a notch 17 for the limiting parts 42 to extend out. When one of the limiting parts 42 on the extension 41 locks the locking part 16, the other limiting part 42 on the extension 41 corresponds to the notch 17, so that the push block 40 can flip on the base 10 in the manner of locking and engaging the limiting parts 42 and the locking parts 16. The snap-fitting of the snap-fitting part 16 and the limiting part 42 on both sides of the base 10, as well as the design of the notch part 17, gives the push block 40 the function of flipping on the base 10. This feature allows the applicator to flip and store the push block 40 after use, effectively reducing the overall space occupied, making it easy to carry and store, and improving the convenience and space utilization efficiency of the product. At the same time, this design enriches the functionality of the applicator without adding too many complex structures, further enhancing the practicality and market competitiveness of the product.

[0035] Please refer to Figure 2-3 Based on the above technical solution, it is further proposed that a first shaft connecting part 43 and a second shaft connecting part 44 be provided on the push block 40. Both the first shaft connecting part 43 and the second shaft connecting part 44 are designed with dovetail groove structure. Rotating shaft parts 51 are provided at both ends of the roller 50. The roller 50 is engaged with the first shaft connecting part 43 or the second shaft connecting part 44 through the rotating shaft parts 51. Wherein:

[0036] When the rotating shaft 51 is engaged with the first shaft connecting part 43, the rolling direction of the roller 50 is perpendicular to the axial direction of the roller 50, so that the roller 50 generates rolling friction with the protective film fixing piece 30 during the rolling process.

[0037] When the rotating shaft 51 engages with the second shaft connecting part 44, the rolling direction of the roller 50 is offset from the axial direction of the roller 50, so that the roller 50 slides against the protective film fixing piece 30 during the rolling process.

[0038] When the rotating shaft 51 of the roller 50 engages with the first shaft connecting part 43, its rolling direction is perpendicular to the axis, generating rolling friction with the protective film fixing piece 30. This method can evenly and efficiently roll and adhere the protective film to the screen. Thanks to the characteristics of rolling friction, damage to the protective film is effectively reduced, ensuring the quality of the application while significantly lowering the probability of problems such as bubbles and wrinkles. When the rotating shaft 51 engages with the second shaft connecting part 44, the rolling direction of the roller 50 forms an offset angle with the axis, generating sliding friction. This mode is suitable for some special protective films or screens, and the rolling method can be flexibly adjusted according to actual needs, enhancing the adaptability of the applicator to different types of application scenarios. Furthermore, the dovetail groove structure of the shaft connecting part makes the installation, removal, and mode switching of the roller 50 simple and convenient. Users can quickly adjust according to actual application needs, greatly improving the flexibility and user experience of the applicator, further highlighting the innovation and practicality of the applicator design.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A universal dust-free rolling film applicator, characterized in that, The system includes a substrate (10), an adapter groove (11) is provided on the substrate (10), a positioning base (20) is detachably fitted in the adapter groove (11), a positioning structure (21) for positioning the screen to be covered is provided on the positioning base (20), a positioning post (12) is also installed on the substrate (10), a protective film fixing piece (30) is positioned on the positioning post (12), the protective film fixing piece (30) is used to fix the protective film, the protective film fixing piece (30) supports the protective film above the positioning base (20) through the positioning post (12), a push block (40) is also slidably connected on the substrate (10), a roller (50) is installed on the push block (40), the roller (50) rolls the protective film on the protective film fixing piece (30) in all directions by the push of the push block (40).

2. The universal dust-free rolling film applicator according to claim 1, characterized in that, The positioning base (20) has multiple evenly distributed first protrusions (22) around its periphery. The positioning base (20) is positioned in the adapter groove (11) by the multiple first protrusions (22).

3. A universal dust-free rolling film applicator according to claim 1, characterized in that, The lower end of the positioning base (20) is also formed with at least one second protrusion (23), and a positioning hole (13) corresponding to the second protrusion (23) is provided at the bottom of the adapter groove (11), so that the positioning base (20) can be positioned and engaged with the adapter groove (11) by the docking of the second protrusion (23) and the positioning hole (13).

4. A universal dust-free rolling film applicator according to claim 1, characterized in that, The positioning structure (21) is a groove structure opened on the positioning base (20), and a hand grip part (24) is also opened at one end of the groove structure to facilitate the picking and placing of the screen to be covered.

5. A universal dust-free rolling film applicator according to claim 1, characterized in that, The positioning post (12) is provided with a step part (14). After the protective film fixing piece (30) is sleeved on the positioning post (12), it is raised and positioned above the positioning base (20) through the step part (14).

6. A universal dust-free rolling film applicator according to claim 1, characterized in that, Guide strips (15) are provided on both sides of the base (10), and extensions (41) that connect to the sides of the base (10) are formed on both sides of the push block (40). At least one limiting part (42) that abuts against the lower end of the guide strip (15) is formed on the extension (41). The push block (40) is slidably connected to the base (10) through the abutting cooperation between the limiting part (42) and the guide strip (15).

7. A universal dust-free rolling film applicator according to claim 6, characterized in that, Two limiting parts (42) are formed on the extension (41), and the limiting parts (42) are cylindrical structures.

8. A universal dust-free rolling film applicator according to claim 7, characterized in that, On both sides of the base (10), there are also snap-fit ​​portions (16) corresponding to the ends of the guide strip (15). The snap-fit ​​portions (16) are configured to snap-fit ​​with the limiting portion (42). A notch portion (17) is also provided on the guide strip (15) for the limiting portion (42) to extend out. When one of the limiting portions (42) on the extension portion (41) snaps into the snap-fit ​​portion (16), the other limiting portion (42) of the extension portion (41) corresponds to the notch portion (17), so that the push block (40) can flip on the base (10) in a snap-fit ​​manner with the limiting portion (42) and the snap-fit ​​portion (16).

9. A universal dust-free rolling film applicator according to claim 8, characterized in that, The push block (40) is provided with a first shaft connecting part (43) and a second shaft connecting part (44). Both the first shaft connecting part (43) and the second shaft connecting part (44) are provided with a dovetail groove structure. The roller (50) is provided with a rotating shaft part (51) at both ends. The roller (50) is engaged with the first shaft connecting part (43) or the second shaft connecting part (44) through the rotating shaft part (51); wherein: When the rotating shaft (51) engages with the first shaft connection (43), the rolling direction of the roller (50) is perpendicular to the axial direction of the roller (50), so that the roller (50) generates rolling friction with the protective film fixing piece (30) during the rolling process; When the rotating shaft (51) engages with the second shaft connection (44), the rolling direction of the roller (50) and the axial direction of the roller (50) are offset by an angle, so that the roller (50) slides against the protective film fixing piece (30) during the rolling process.

Images