Roller film pasting device capable of achieving efficient rolling and pasting

Abstract

The utility model relates to the technical field of film sticking devices, in particular to a roller film sticking device capable of efficiently rolling and sticking, which is used for assisting in sticking a protective film onto a screen to be stuck with the film and comprises a positioning base body and a rolling part connected onto the positioning base body in a sliding manner, the positioning base body is provided with a screen positioning part for positioning a screen to be subjected to film pasting and a film positioning part for positioning a protective film, so that the protective film and the screen to be subjected to film pasting can be correspondingly matched after being positioned; sliding grooves are formed in the two sides of the positioning base body respectively, the rolling part comprises a holding part, height-adaptive side sliding plates assembled below the two sides of the holding part and a pressing roller rotationally connected between the two height-adaptive side sliding plates, and the pressing roller arranged on the rolling part or the connection between the rolling part and the positioning base body can be adjusted to be uniform. And a rolling structure which is smoother and higher in precision can be arranged, so that the rolling component can reach a higher level in the aspects of use smoothness, service life and film pasting quality.

Description

Technical Field

[0001] This utility model relates to the field of film applicator technology, and in particular to a high-efficiency roller applicator for roller bonding. Background Technology

[0002] In the field of electronic devices, applying screen protectors is a common maintenance method to protect screens from scratches, wear, and fingerprints. To achieve efficient and precise screen protector application, various auxiliary tools equipped with screen protector applicators have emerged on the market. One existing screen protector applicator positions both the screen to be protected and the screen protector on the applicator, ensuring they align correctly. Then, using rollers integrated into the applicator, the screen protector is applied horizontally from the top to the screen using a rolling and pressing method, gradually attaching the screen protector from one end to the other, significantly improving application efficiency.

[0003] To improve the versatility of screen protector applicators and accommodate different screens and screen protectors, existing applicators feature universal positioning structures for both. This is achieved by incorporating replaceable screen adapters, allowing the applicator to accommodate screens of varying sizes. Screen protector positioning utilizes a universal upper protector sheet, which is positioned on the applicator via positioning posts and other structures. This upper protector sheet, a film structure, is used to attach the screen protector, ensuring that screen protectors of different sizes can be attached and positioned on the applicator using a standardized upper protector sheet.

[0004] However, the main approach to the roller structure on screen protectors is to increase the length of the roller to cover screens of different sizes and accommodate the rolling application of the protective film. The inventors discovered that existing roller components are primarily assembled from a roller and a sliding handle, with the handle slidably connected to the screen protector to drive the roller to slide and roll over the protective film. However, most handles are one-piece molded structures, making it impossible to adjust the roller height by changing only a small component, based on the varying heights of different screens after they are positioned on the screen protector. Furthermore, due to the integrated structure of the handle, the roller and handle require a forced engagement mechanism. Existing methods primarily use a dovetail groove and a self-formed pivot structure on the roller for this engagement. This allows the roller to rotate and connect to the handle via the dovetail groove and pivot. However, this connection method suffers from low precision, frequently causing jamming during rolling operations. Moreover, over long-term use, the dovetail groove and pivot are prone to damage due to wear and impacts, leading to uneven roller rotation and affecting the stability and accuracy of the rolling operation during film application. Its durability and rolling precision are insufficient to meet the increasingly demanding requirements for film application quality. Therefore, it is necessary to propose an improved technical solution to address these issues. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] A high-efficiency roller applicator for applying protective film to a screen, comprising a positioning base and a roller component slidably connected to the positioning base. The positioning base has a screen positioning part for positioning the screen to be applied and a film positioning part for positioning the protective film, so that the protective film and the screen to be applied can be correspondingly fitted after positioning. Slide grooves are respectively provided on both sides of the positioning base. The roller component includes a gripper, height-adaptive side slides assembled below both sides of the gripper, and a pressure roller rotatably connected between the two height-adaptive side slides.

[0007] First bushings are provided on the opposite surfaces of the two height-adapting side slides. The two ends of the pressure roller are formed with first rotating shafts that are rotatably connected to the first bushings. At least two second bushings that roll with the slide grooves are also rotatably connected on the opposite surfaces of the two height-adapting side slides. The height-adapting side slides are slidably connected to the positioning base through the rolling engagement of the second bushings with the slide grooves, so that the pressure roller can perform rolling operation on the positioning base for the protective film.

[0008] Preferably, a connecting portion is formed at a position near both sides of the grip, and a right angle is formed between the connecting portion and the two sides of the grip to mate with the height-adaptive side slide plate. A screw connection structure is provided between the connecting portion and the height-adaptive side slide plate, and the height-adaptive side slide plate is screwed to the connecting portion through the screw connection structure.

[0009] Preferably, the two height-adaptive side slides have shaft holes and second rotating shafts formed on their opposite surfaces. The first bushing is installed in the shaft hole and the second bushing is rotatably connected to the second rotating shaft.

[0010] Preferably, an arched opening is provided at the lower end of the connecting part to mate with the shaft hole, and the height-adaptive side slide is positioned and mates with the gripper through the cooperation of the shaft hole and the arched opening.

[0011] Preferably, the screw connection structure includes a threaded connection hole on the connection part and a countersunk hole on the height-adaptive side slide, and decorative pieces for covering the countersunk holes are attached to the back surfaces of the two height-adaptive side slides.

[0012] Preferably, the screen positioning part includes an adapter groove formed on the positioning base and a screen adapter installed in the adapter groove, wherein the screen adapter has a positioning groove for accommodating and restricting the area around the screen to be covered.

[0013] Preferably, the film positioning part includes an upper protective fastening part disposed at the front position of the positioning base, an upper protective positioning post disposed at the rear position of the positioning base, and an upper protective sheet for positioning and attaching with the protective film. The front part of the upper protective sheet is fastened and positioned with the upper protective fastening part, and the rear part of the upper protective sheet is positioned and sleeved with the upper protective positioning post. The upper protective positioning post has a stepped structure. After the upper protective sheet is sleeved on the upper protective positioning post, it is raised by the stepped structure so that the positioned protective film and the screen to be filmed are in a height gap fit.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] Unlike traditional one-piece molded handles where roller height is difficult to adjust, this device uses a height-adaptive side slide design for the rolling component. This eliminates the need to redesign and manufacture the entire applicator or make complex adjustments to components when dealing with screens of different heights. Simply by changing the height-adaptive side slide, the height of the pressure roller can be quickly changed, achieving precise adaptation to different screen types. This approach not only significantly reduces production costs and shortens the R&D cycle but also significantly improves the applicator's versatility, broadens its market application range, and meets diverse screen application needs.

[0016] This structure abandons the low-precision and easily damaged structure of traditional dovetail groove and rotating shaft snap-fit. Through the assembly structure design of the grip part and the height-adaptive side slide plate, it can set a first bushing on the height-adaptive side slide plate to cooperate with the first rotating shaft part at both ends of the pressure roller. It can also set a second bushing rotatably connected to the height-adaptive side slide plate to roll with the slide groove. This allows for a smoother and more precise rolling structure for both the pressure roller on the rolling component and the connection between the rolling component and the positioning base. As a result, the rolling component can achieve a higher level in terms of smoothness of use, service life and film application quality.

[0017] 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

[0018] 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.

[0019] Figure 1 This is a structural schematic diagram of the present invention in use;

[0020] Figure 2 This is a utility model Figure 1 A schematic diagram of the structure in the separated state of the upper protective plate;

[0021] Figure 3 This is an exploded structural diagram of the present invention;

[0022] Figure 4 This is an exploded structural diagram of the rolling component in this utility model.

[0023] The reference numerals and names in the figure are as follows:

[0024] Positioning base 10, screen positioning part 11, adapter groove 111, screen adapter 112, positioning groove 113, film positioning part 12, upper protection fastening part 121, upper protection positioning post 122, upper protection piece 123, stepped structure 124, sliding groove 13, rolling part 20, gripping part 21, connecting part 211, arched opening 212, height-adaptive side sliding plate 22, first bushing 221, second bushing 222, shaft hole part 223, second rotating shaft part 224, pressure roller 23, first rotating shaft part 231, screw connection structure 30, threaded connection hole 31, countersunk hole 32, decorative piece 33. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-4 In this embodiment of the present invention, a high-efficiency roller film applicator is provided to assist in attaching a protective film to a screen to be filmed. It includes a positioning base 10 and a roller component 20 slidably connected to the positioning base 10. The positioning base 10 is provided with a screen positioning part 11 for positioning the screen to be filmed and a film positioning part 12 for positioning the protective film, so that the protective film and the screen to be filmed can be correspondingly fitted after positioning. Slide grooves 13 are respectively provided on both sides of the positioning base 10. The roller component 20 includes a gripping member 21, height-adaptive side slide plates 22 assembled below both sides of the gripping member 21, and a pressure roller 23 rotatably connected between the two height-adaptive side slide plates 22.

[0027] First bushings 221 are provided on the opposite surfaces of the two height-adaptive side slide plates 22. The two ends of the pressure roller 23 are formed with first rotating shaft portions 231 that are rotatably connected to the first bushings 221. At least two second bushings 222 that are in rolling cooperation with the slide groove 13 are also rotatably connected on the opposite surfaces of the two height-adaptive side slide plates 22. The height-adaptive side slide plates 22 are slidably connected to the positioning base 10 through the rolling cooperation between the second bushings 222 and the slide groove 13, so that the pressure roller 23 can perform rolling operation on the positioning base 10.

[0028] In use, the screen to be coated is first placed on the screen positioning part 11 of the positioning base 10. The screen positioning part 11 is used to accurately position the screen to be coated, ensuring that the screen to be coated will not shift on the positioning base 10 during the coating process. Then, the protective film is positioned on the positioning base 10 by the film positioning part 12, so that the protective film and the screen to be coated can be precisely matched after positioning. After the screen to be coated and the protective film are positioned, the operator holds the grip 21 of the rolling component. Since the height-adaptive side slide plate 22 forms a rolling engagement with the slide grooves 13 on both sides of the positioning base 10 through the second bushing 222, the operator only needs to gently push the grip 21 to drive the pressure roller 23 to move laterally along the surface of the protective film. During the movement, the first rotating shaft part 231 at both ends of the pressure roller 23 is rotatably connected to the first bushing 221 on the height-adaptive side slide plate 22, so that the pressure roller 23 can roll smoothly, gradually and tightly adhering the protective film to the screen to be coated from one end to the other, completing the entire coating operation.

[0029] The above technical solution addresses the issue of traditional one-piece molded handles having difficulty adjusting roller height. The roller pressing component 20 adopts a height-adaptive side slide plate 22 design. When facing screens of different heights to be covered, there is no need to redesign and manufacture the entire screen protector or make complex adjustments to the components. Simply by changing the height-adaptive side slide plate 22, the height of the pressure roller 23 can be quickly changed, achieving precise adaptation to different types of screens. This method not only significantly reduces production costs and shortens the R&D cycle, but also significantly improves the versatility of the screen protector, broadens its market application range, and meets diverse screen protector application needs.

[0030] This structure abandons the low-precision and easily damaged structure of the traditional dovetail groove and rotating shaft snap-fit. Through the assembly structure design of the grip part and the height-adaptive side slide plate 22, it is possible to set a first bushing 221 on the height-adaptive side slide plate 22 to cooperate with the first rotating shaft part 231 at both ends of the pressure roller 23. It is also possible to set a second bushing 222 rotatably connected to the height-adaptive side slide plate 22 to roll with the slide groove 13. This allows for a smoother and more precise rolling structure for both the pressure roller 23 on the rolling component 20 and the connection between the rolling component 20 and the positioning base 10. As a result, the rolling component 20 can achieve a higher level in terms of smoothness of use, service life and film application quality.

[0031] Please see Figure 4 Based on the above technical solution, it is further proposed that connecting portions 211 are formed at the lower positions near both sides of the grip 21, and right angle portions are formed between the connecting portions 211 and the sides of the grip 21 to mate with the height-adaptive side slide plate 22. This allows for initial positioning and mating between the height-adaptive side slide plate 22 and the grip. In terms of the assembly and fixing structure of the grip and the height-adaptive side slide plate 22, a screw connection structure 30 can be provided between the connecting portions 211 and the height-adaptive side slide plate 22. The height-adaptive side slide plate 22 is screwed to the connecting portions 211 through the screw connection structure 30. This method provides a relatively firm and reliable connection. The rolling component 20 can slide smoothly and stably on the positioning base 10. In order to improve the overall aesthetics and meet the high-quality requirements of some users for the applicator, this technical solution, based on the detachable and replaceable sliding component, further sets up a screw connection structure 30, including a threaded connection hole 31 opened on the connecting part 211 and a countersunk hole 32 opened on the height-adaptive side slide plate 22. Decorative pieces 33 for covering the countersunk hole 32 are attached to the back surfaces of the two height-adaptive side slide plates 22. Through this setting, the overall appearance of the assembled sliding component will not show a screw structure, thereby improving the overall appearance. In addition, the assembly and fixing structure of the grip and the height-adaptive side slide plate 22 can also be configured with a buckle structure and a positioning pin structure between the connecting part 211 and the height-adaptive side slide plate 22. After the connecting part 211 and the height-adaptive side slide plate 22 are initially positioned, they are further positioned by the positioning pin structure, and then fixed by the buckle structure. The buckle structure and the positioning pin structure make it easier to disassemble the height-adaptive side slide plate 22. With these assembly and fixing methods, operators can easily remove and replace the height-adaptive side slide plate 22. By configuring different sizes of height-adaptive side slide plates 22, the film application operation can be met for screens of different heights.

[0032] Please see Figure 4Based on the above technical solution, it is further proposed that each of the two height-adaptive side slide plates 22 has a shaft hole 223 and a second rotating shaft 224 formed on its opposite surfaces. The first bushing 221 is installed in the shaft hole 223, and the second bushing 222 is rotatably connected to the second rotating shaft 224. This structure is simple in design, facilitates the assembly of the first bushing 221 and the second bushing 222, and has no complex structure, which can reduce the design cost of the mold. In addition, an arched opening 212 that mates with the shaft hole 223 is extended at the lower end of the connecting part 211. The height-adaptive side slide plate 22 is positioned and mates with the grip 21 through the cooperation of the shaft hole 223 and the arched opening 212. It cleverly utilizes the structure of the shaft hole 223, which makes the fit between the height-adaptive side slide plate 22 and the grip 21 more precise, firm and reliable.

[0033] Please see Figure 1-3 Based on the above technical solution, it is further proposed that the screen positioning part 11 includes an adapter groove 111 formed on the positioning base 10 and a screen adapter 112 installed in the adapter groove 111. The screen adapter 112 is provided with a positioning groove 113 for accommodating and restricting the area around the screen to be covered. The appropriate screen adapter 112 is selected and assembled onto the screen protector according to the size of the screen to be covered, so that the screen protector can meet the positioning of screens of different sizes to be covered. The film positioning part 12 includes an upper protective fastening part 121 located at the front of the positioning base 10, an upper protective positioning post 122 located at the rear of the positioning base 10, and an upper protective sheet 123 for positioning and attaching with the protective film. The front part of the upper protective sheet 123 is fastened and positioned with the upper protective fastening part 121, and the rear part of the upper protective sheet 123 is positioned and sleeved with the upper protective positioning post 122. By using a universal upper protective sheet 123, the upper protective sheet 123 is positioned on the film applicator through the upper protective fastening part 121, the positioning post, and other structures. The upper protective sheet 123 is a film structure used to attach the protective film. The protective film is positioned by attaching, so that protective films of different sizes can be attached and positioned on the film applicator by using a uniform upper protective sheet 123. The upper positioning post 122 has a stepped structure 124. After the upper protective film 123 is sleeved on the upper positioning post 122, it is raised by the stepped structure 124 so that the protective film after positioning is gap-fitted with the screen to be covered in height. This ensures that the protective film will not stick to the screen to be covered after positioning. The pressure roller 23 can roll the protective film in an orderly manner during the rolling operation, so that the protective film can be gradually attached to the screen to be covered from one end to the other.

[0034] 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 high-efficiency roller applicator for applying protective film, used to assist in attaching protective film to a screen to be covered, characterized in that, The utility model relates to a screen film pasting device, including positioning base (10) and rolling pressure component (20) slidingly connected on positioning base (10), positioning base (10) is provided with screen positioning part (11) for positioning the screen to be pasted film and film positioning part (12) for positioning the protective film, so that the protective film and the screen to be pasted film can be positioned and matched correspondingly, sliding slot (13) is arranged at both sides of positioning base (10) respectively, rolling pressure component (20) includes holding part (21), the height adaptation side slide plate (22) assembled below both sides of holding part (21) and the pressure roller (23) rotationally connected between two height adaptation side slide plates (22), wherein: First shaft sleeve (221) is arranged on the opposite surface of two height adaptation side slide plates (22), and the first shaft sleeve (221) is rotationally connected to the first shaft sleeve (221) at both ends of the pressure roller (23), at least two second shaft sleeves (222) are rotationally connected to the opposite surface of two height adaptation side slide plates (22), and the second shaft sleeve (222) is rollingly matched with the sliding slot (13), the height adaptation side slide plate (22) is slidingly connected to the positioning base (10) through the rolling matching of the second shaft sleeve (222) and the sliding slot (13), so that the pressure roller (23) can roll and press the protective film on the positioning base (10).

2. The high-efficiency roller laminator of claim 1, wherein, The connecting part (211) is formed at the position close to both sides below the holding part (21), and the connecting part (211) forms a right angle between the two sides of the holding part (21) to be connected to the height adaptation side slide plate (22), a screw connection structure (30) is arranged between the connecting part (211) and the height adaptation side slide plate (22), and the height adaptation side slide plate (22) is screw-connected to the connecting part (211) through the screw connection structure (30).

3. The high-efficiency roll laminating roller laminator according to claim 2, characterized in that, The shaft hole part (223) and the second shaft part (224) are formed on the opposite surface of the two height adaptation side slide plates (22), the first shaft sleeve (221) is installed in the shaft hole part (223), and the second shaft sleeve (222) is rotationally connected to the second shaft part (224).

4. The high-efficiency roller laminator of claim 3, wherein, The arcuate opening (212) is arranged and opened below the connecting part (211) and is connected to the shaft hole part (223), and the height adaptation side slide plate (22) is positioned and connected to the holding part (21) through the cooperation of the shaft hole part (223) and the arcuate opening (212).

5. The high efficiency roll laminating roller laminator of claim 2, wherein, The screw connection structure (30) includes a threaded connection hole (31) opened in the connecting part (211) and a countersunk hole (32) opened in the height adaptation side slide plate (22), and a decorative sheet (33) is attached to the opposite surface of the two height adaptation side slide plates (22) to cover the countersunk hole (32).

6. The high efficiency roll laminating roller laminator of claim 1, wherein, The screen positioning part (11) includes an adaptation slot (111) opened in the positioning base (10) and a screen adaptation part (112) installed in the adaptation slot (111), and the screen adaptation part (112) is provided with a positioning groove (113) for accommodating and limiting the screen to be pasted film.

7. The high efficiency roll laminating roller laminator according to claim 2, wherein, The film positioning part (12) comprises an upper protection buckle joint part (121) arranged at a front position of the positioning base body (10), an upper protection positioning column (122) arranged at a rear position of the positioning base body (10), and an upper protection piece (123) for positioning and attaching the protective film, a front part of the upper protection piece (123) is buckled and positioned in cooperation with the upper protection buckle joint part (121), a rear part of the upper protection piece (123) is positioned and sleeved with the upper protection positioning column (122), and the upper protection positioning column (122) has a stepped structure (124), after the upper protection piece (123) is sleeved on the upper protection positioning column (122), the upper protection piece (123) is arranged in a high position through the stepped structure (124), so that the positioned protective film and the screen to be attached are gap matched in height.

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