Auxiliary laminating device for visual center positioning

Abstract

The utility model discloses a visual center positioning auxiliary laminating device, which comprises a bottom plate, diagonal positioning strips and a positioning film, positioning patterns are arranged on the surfaces of the bottom plate and the positioning film, and accurate center calibration of a film group and an equipment screen is realized through center visual alignment; the two L-shaped diagonal positioning strips are fixed at diagonal corners of the bottom plate to form physical limiting, the release film can be conveniently pulled out through the cantilever structures, and the avoiding grooves can avoid physical keys of equipment. The positioning film is temporarily bonded with the bottom plate through acrylic ester or silica gel-based pressure-sensitive adhesive, the initial bonding force is 100-150g / i n, the positioning film has adjustability and stability, and a folding dotted line, a groove hole and a handle matching structure are designed on a bonding part of the positioning film, so that the bonding operation is convenient and fast. According to the utility model, a double system of visual positioning and diagonal physical positioning is adopted, the laminating deviation rate is reduced to below 1% from 5% in the prior art, and the laminating precision is improved by more than 50%; the application adopts a very simple structural design, accords with the trend of light weight and environmental protection, and has the advantages of high precision and cost.

Description

Technical Field

[0001] This utility model relates to the field of consumer electronics auxiliary tools technology, specifically an auxiliary fitting device for visual center positioning. Background Technology

[0002] Traditional protective film applicators generally employ a four-sided surround positioning structure, relying on positioning posts at the top of the positioning frame or edge clips for positioning. This method relies solely on physical contact on one or more sides for positioning, which can easily lead to problems such as protective film misalignment and edge alignment deviations when dealing with complex structures such as curved screens and irregularly shaped perforated screens, resulting in insufficient bonding accuracy.

[0003] In addition, existing flat plate bonding devices often use a heavy frame structure to ensure positioning stability, which uses a large amount of material (such as ABS plastic frames with a thickness of ≥3mm). This not only increases the weight of the product (a single positioning device weighs about 50-80g), but also results in a large packaging volume and a significant increase in transportation costs.

[0004] The four-sided positioning structure requires a large amount of plastic material, and multi-layer composite structures are often used to enhance positioning friction. This makes recycling and disposal difficult and does not conform to the current development trend of lightweight and environmentally friendly consumer electronics components.

[0005] To address this issue, a visual center positioning-assisted fitting device is proposed. Summary of the Invention

[0006] To address the problems of low positioning accuracy, significant material waste, and bulky structure in existing protective film bonding technologies, an auxiliary bonding device based on a combination of central visual positioning and diagonal physical positioning is provided, achieving precise positioning, lightweight design, and wide applicability.

[0007] This invention provides an auxiliary bonding device for visual center positioning, including a base plate, diagonal positioning strips, and a positioning film. Positioning patterns are formed on the surfaces of both the base plate and the positioning film. The diagonal positioning strips are located at the corners of the base plate surface to position the device to be bonded. By using the central visual positioning patterns (such as crosshairs or concentric circles) on the base plate and the positioning film, the center of the protective film is aligned with the center of the device screen, solving the deviation problem of traditional single-sided positioning and improving bonding accuracy by more than 50%. Combined with the diagonal positioning strips at the corners for physical limiting, a dual positioning system of "central visual calibration + diagonal physical positioning" is formed, preventing protective film offset. Existing technologies have a bonding offset rate of approximately 5%, while this solution reduces it to below 1%. It abandons the traditional four-sided surrounding positioning frame, achieving device fixation solely through the diagonal positioning strips at the corners, reducing material usage by more than 40%, and significantly reducing weight compared to existing heavy positioning devices, thus lowering production and transportation costs.

[0008] Further describing the aforementioned solution, two diagonal positioning strips are provided, each fixed to the diagonal of the base plate, and the diagonal positioning strips are arranged in an "L" shape. The two diagonal "L"-shaped positioning strips form a diagonal physical constraint, utilizing the principle of geometric stability (two points determine a straight line, two diagonals determine a planar position), ensuring that the device will not shift or rotate during placement, improving positioning stability by more than 3 times compared to a single positioning point. The positioning strips are located at the diagonal corners, not obstructing functional areas such as the charging port and speaker on the device's edge, allowing users to plug and unplug without removing the adhesive, improving ease of use.

[0009] Further description of the aforementioned scheme: one end of the diagonal positioning strip is attached and fixed to the base plate, while the other end is suspended to form a cantilever for the release film to be pulled out.

[0010] Further describing the aforementioned solution, the diagonal positioning strip has a clearance groove to avoid the buttons of the device to be coated, precisely avoiding physical buttons such as volume buttons and power buttons of the device.

[0011] Further describing the aforementioned solution, the positioning film is bonded to the base plate using an acrylic pressure-sensitive adhesive or a silicone-based pressure-sensitive adhesive. The initial adhesive force of the pressure-sensitive adhesive is 100-150 g / in, ensuring temporary fixation between the positioning film and the base plate. This allows the user to adjust the position of the film assembly before bonding, solving the problem of adjustment limitations in traditional fully adhesive structures. The pressure-sensitive adhesive has a light transmittance of ≥95%, which does not affect the visual alignment of the positioning pattern and ensures the accuracy of the center visual positioning, making it particularly suitable for high-precision bonding of transparent protective films.

[0012] Further description of the aforementioned scheme: the release film and the handle extend outward to form an adhesive portion and a dotted line, and the adhesive portion of the release film has several slots. The end of the handle is bonded to the adhesive portion of the release film by double-sided adhesive, and the double-sided adhesive passes through the slots and is bonded to the positioning film.

[0013] As a further description of the aforementioned solution, the bottom surface of the positioning film is provided with double-sided adhesive for bonding to the base plate.

[0014] Further describing the aforementioned solution, the top surface of the positioning film is provided with a positioning film protector, which includes a first positioning film protector, a second positioning film protector, and a third positioning film protector, all of which can be torn off separately. The positioning film protectors are used to protect the adhesive layer on the top surface of the positioning film. Generally, only the second positioning film protector is torn off, allowing the positioning film to partially adhere to the tempered glass film.

[0015] Optionally, one end of the base plate is provided with a pad to suspend the tablet computer, so that the screen of the tablet computer and the tempered glass film have a certain angle, achieving one-way adhesion and one-way air discharge.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] Improved positioning accuracy: By using the visual positioning pattern between the base plate and the positioning film (center crosshair alignment accuracy ≤ 0.1mm) and the physical limiting of the diagonal positioning strips (cantilever and equipment edge fit gap ≤ 0.2mm), the protective film achieves dual calibration of center visual positioning and diagonal physical positioning, reducing the bonding offset rate from 5% in the existing technology to below 1%.

[0018] Lightweight and environmentally friendly: The thickness of tablet screen protectors on the market is 16-18mm, while this invention can achieve a thickness of less than 12mm; it adopts a minimalist structure of center positioning + diagonal positioning, which reduces weight by more than 60% and material usage by 50% compared to traditional four-sided positioning devices, complies with RoHS environmental standards, and reduces packaging and transportation costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0020] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model;

[0021] Figure 2 A schematic diagram illustrating the use of this utility model according to an embodiment;

[0022] Figure 3 This is a schematic diagram of the membrane module structure provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of a membrane module explosion provided in an embodiment of the present invention;

[0024] Figure 5 , 6 This is a schematic diagram of the release film and handle structure provided in an embodiment of the present utility model;

[0025] Figure 7 This is a schematic diagram of the diagonal positioning strip structure provided in an embodiment of the present utility model;

[0026] Figure 8 A schematic diagram illustrating the use of this utility model according to an embodiment;

[0027] Figure 9 , 10 This is a schematic diagram of the release film and handle structure provided in an embodiment of the present utility model;

[0028] Figure 11A schematic diagram of the positioning membrane structure provided in an embodiment of this utility model.

[0029] The following are the labeling elements in the figure:

[0030] 1. Base plate; 11. Positioning pattern; 12. Pad block; 2. Diagonal positioning strip; 21. Clearance groove; 22. Cantilever; 3. Positioning film; 31. First positioning protective film; 32. Second positioning protective film; 33. Third positioning protective film; 4. Protective film; 5. Release film; 51. Slot; 52. Dashed line; 6. Handle; 61. Double-sided adhesive strip; 7. Tablet PC.

[0031] The accompanying drawings have illustrated specific embodiments of the present invention, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] To make the technical solution and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0034] Please see Figures 1-8 As shown, the core components of the center positioning auxiliary bonding device provided by this utility model include a base plate 1, diagonal positioning strips 2, and a positioning film 3. The height of the base plate 1 and the diagonal positioning strips 2 is controlled to be below 12mm. The base plate 1 serves as the basic load-bearing component, and its surface is provided with a center positioning pattern 11. In this embodiment, mutually perpendicular cross dashed lines 52 are used, with three horizontal and three vertical lines, to achieve center alignment calibration between the film assembly and the screen of the device to be coated. The positioning film 3 has a positioning pattern 11 corresponding to that of the base plate 1 printed on its surface. Visual alignment ensures that the centers of the two coincide, forming a "center visual positioning" system. The bottom surface of the positioning film 3 is provided with double-sided adhesive for bonding to the base plate 1.

[0035] like Figure 2 As shown in some embodiments, a pad 12 is provided at one end of the base plate 1 to suspend the tablet computer 7, so that the screen of the tablet computer 7 and the tempered glass film have a certain angle, so as to achieve one-way bonding and exhaust air in one direction. When bonding, it gradually bonds in one direction by relying on the adsorption force and electrostatic force of the adhesive. As long as one end is bonded, the other end will slowly bond completely on its own.

[0036] like Figure 1 , 2 As shown, the diagonal positioning strips 2 in this embodiment are two "L"-shaped structures, respectively fixed to the two diagonals of the base plate 1, to physically limit the film application device. One end of each positioning strip is attached to the base plate 1, and the other end is suspended to form a cantilever 22 structure, which is used to pull out the release film 5. At the same time, the positioning strips are provided with avoidance grooves 21 to precisely avoid physical buttons such as volume buttons and power buttons of the device, so as not to block the functional areas of the device and improve the convenience of use. In some embodiments, three or four diagonal positioning strips 2 may be used.

[0037] In addition to using ordinary double-sided adhesive, the positioning film 3 can also be temporarily bonded to the base plate 1 using acrylic pressure-sensitive adhesive or silicone-based pressure-sensitive adhesive. The initial bonding force is controlled at 100-150 g / in, which ensures the stability of the positioning film 3 on the base plate 1 and allows users to fine-tune the position of the film assembly before bonding, solving the problem of the inability to adjust in traditional fully adhesive structures. The pressure-sensitive adhesive has a light transmittance of ≥95%, ensuring that the positioning pattern 11 of the base plate 1 and the positioning film 3 is clearly visible and does not affect the accuracy of visual alignment, making it especially suitable for high-precision bonding of transparent protective film 4.

[0038] like Figure 9 , 10 As shown, the release film 5 and the handle 6 extend outward to form an adhesive part and a dotted line 52. The adhesive part of the release film 5 has several slots 51. The end of the handle 6 is bonded to the positioning film 3 through the slots 51 by double-sided adhesive, forming a stable connection structure.

[0039] To gain a more thorough and comprehensive understanding of the disclosure of this utility model, its principles will be further explained below in conjunction with its usage.

[0040] like Figure 11 As shown, peel off the second positioning protective film 32 on the positioning film 3 to expose the adhesive film layer, and partially fix the positioning film 3 onto the tempered glass film, then as shown... Figure 9 As shown, first bend the end of the handle 6 along the dotted line, and fix the end of the handle 6 to the end of the release film with double-sided adhesive. In some embodiments, ultrasonic welding or making the handle 6 and the release film 5 into a whole can also be used. Next, use the double-sided adhesive strip 61 on the handle 6 to stick the third positioning protective film 33 at the end of the positioning film 3 to the underside of the tempered film, so that the tempered film, positioning film 3, release film 5, and handle 6 are a whole film group. It should be noted that in some embodiments, the first positioning protective film 31 and the second positioning protective film 32 can be removed at the same time, so that the positioning film 3 and the protective film 4 are more firmly attached. The function of the third positioning protective film 33 is to prevent the double-sided adhesive on the handle from directly contacting the adhesive layer on the positioning film. The end corners of the first positioning protective film 31 are designed with sharp acute angles for easy tearing.

[0041] Then, observe the center positioning pattern 11 of the base plate 1 and the positioning film 3, adjust the position of the base plate 1 or the film assembly so that the cross lines or concentric circles of the two are completely aligned, complete the center visual calibration, and achieve an alignment accuracy of ±0.1mm. At this time, the film assembly is bonded to the base plate 1.

[0042] The device to be coated, such as a tablet computer 7 or a mobile phone, is placed upside down on the base plate 1. The two "L"-shaped diagonal positioning strips 2 physically limit the translation and rotation of the device to be coated, ensuring that its fixed position on the base plate 1 is accurate.

[0043] Next, pull the handle 6 along the cantilever 22 direction of the diagonal positioning strip 2, as follows. Figure 10 As shown, the dotted lines on the release film 5 play a role at this time, causing the end of the release film 5 to bend, making it easier to remove the release film 5. Gradually peel off the release film 5 so that the protective film 4 can be attached to the device screen.

[0044] This embodiment effectively solves the bonding misalignment problem of complex structures such as curved screens and irregularly shaped punch-hole screens through a dual system of "central visual positioning + diagonal physical positioning," combining high precision with wide applicability. The minimalist structural design improves positioning stability while achieving lightweight and environmentally friendly goals, making it suitable for tempered glass screen protector bonding in various consumer electronic devices and meeting the current market demand for portable and environmentally friendly accessories.

[0045] It should be noted that, at the time of shipment, the tempered glass film, positioning film 3, release film 5, and handle 6 can be packaged as a whole film assembly and fixed on the base plate 1. The base plate 1 is used for packaging and protection, achieving the goals of lightweighting and environmental protection, and making it convenient for users to use.

[0046] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the foregoing claims.

[0047] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. The terms "upper end," "lower end," "left side," "right side," "front end," "rear end," and similar expressions used herein refer to the positional relationship with reference to the accompanying drawings.

[0048] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A visual center positioning auxiliary fitting device, characterized in that: It includes a base plate (1), a diagonal positioning strip (2) and a positioning film (3). The base plate (1) and the positioning film (3) are both provided with positioning patterns (11). The diagonal positioning strip (2) is set at the corner of the base plate (1) for positioning the device to be covered with film.

2. The visual center positioning auxiliary fitting device according to claim 1, characterized in that: Two diagonal positioning strips (2) are provided, which are fixed on the diagonal lines of the base plate (1) respectively, and the diagonal positioning strips (2) are arranged in an "L" shape.

3. The visual center positioning auxiliary fitting device according to claim 2, characterized in that: One end of the diagonal positioning strip (2) is attached and fixed to the base plate (1), and the other end is suspended to form a cantilever (22) for the release film (5) to be pulled out.

4. The visual center positioning auxiliary fitting device according to claim 2, characterized in that: The diagonal positioning strip (2) has a clearance groove (21) to avoid the button of the device to be applied.

5. The visual center positioning auxiliary fitting device according to claim 1, characterized in that: The positioning film (3) is bonded to the base plate (1) by an acrylic pressure-sensitive adhesive or a silicone pressure-sensitive adhesive.

6. The visual center positioning auxiliary fitting device according to claim 1, characterized in that: It also includes a release film (5) and a handle (6). The release film (5) and the handle (6) extend outward to form an adhesive part and a dotted line (52). The adhesive part of the release film (5) has several slots (51). The end of the handle (6) is bonded to the adhesive part of the release film (5) by double-sided adhesive. The double-sided adhesive passes through the slots (51) and is bonded to the positioning film (3).

7. The visual center positioning auxiliary fitting device according to claim 1, characterized in that: The bottom surface of the positioning film (3) is provided with double-sided adhesive for bonding with the base plate (1).

8. The visual center positioning auxiliary fitting device according to claim 1, characterized in that: The top surface of the positioning film (3) is provided with a positioning film protector, which includes a first positioning film protector (31), a second positioning film protector (32), and a third positioning film protector (33) that can be torn apart separately.

9. The visual center positioning auxiliary fitting device according to claim 1, characterized in that: One end of the base plate (1) is provided with a pad (12) to suspend the tablet computer (7).

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