Multi-connected curved surface touch screen manufacturing tooling

Abstract

The utility model provides a kind of multi-association curved surface touch screen preparation frock, it is related to multi-association curved surface touch screen preparation technical field, including curved surface positioning jig, the inner cavity for accommodating LCD liquid crystal screen is equipped with multiple in curved surface positioning jig middle part;The bottom of the inner cavity is sequentially pasted with bubble cotton and silicon grease double-sided adhesive;The sidewall periphery of the inner cavity is pasted with the first positioning bubble cotton that can be removed;The four corners of the curved surface positioning jig are additionally provided with the second positioning bubble cotton for positioning curved surface protective cover plate, to solve the current multi-association curved surface touch screen preparation when protective cover plate has curved surface state, it is difficult to realize accurate positioning and lamination between liquid crystal display module and cover plate, leading to large deviation, lamination bubble is more, finished product rate is low and other technical problems.

Description

Technical Field

[0001] This utility model mainly relates to the field of multi-curved touch screen fabrication technology, specifically to a multi-curved touch screen fabrication tooling. Background Technology

[0002] Multi-screen curved touchscreens are primarily used in the manufacture of multi-screen interactive curved display devices for applications such as aviation, automotive, and high-end commercial use. A multi-screen curved touchscreen typically consists of multiple integrated display areas, with adjacent areas transitioned by curved surfaces to adapt to complex installation environments and visual experience requirements. During the manufacturing process of this type of screen, markings are usually printed on the connecting areas of the protective cover, and the cover is formed into a pre-defined curved shape using a hot bending process.

[0003] During the implementation of specific embodiments, the applicant discovered the following defects: In current manufacturing processes, screen printing is performed after hot bending. However, because the protective cover is already curved, it is difficult to achieve precise positioning and bonding between the liquid crystal display module (LCD) and the cover. This results in problems such as large alignment deviations, numerous bonding bubbles, and low yield. In addition, existing tooling fixtures for curved surface positioning are mostly rigid structures, which cannot adapt to the deformation requirements during the curved surface bonding process, further limiting the manufacturing accuracy and efficiency of multi-panel curved screens.

[0004] It should be noted that the above content falls within the scope of technical knowledge of those skilled in the art. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0005] 1. The technical problem to be solved by the utility model: This utility model provides a tooling for manufacturing multi-curved touch screens to solve the technical problems existing in the background art.

[0006] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is as follows: a multi-unit curved touch screen manufacturing fixture, including a curved positioning jig, wherein the curved positioning jig has multiple inner cavities in the middle for accommodating LCD screens; the bottom of each inner cavity is sequentially covered with foam and silicone double-sided adhesive; the side walls of each inner cavity are covered with removable first positioning foam; and the four corners of the curved positioning jig are also provided with second positioning foam for positioning curved protective covers. This application enables precise alignment and assembly of multiple LCD screens and curved protective covers through the curved positioning jig. In practice, firstly, foam is attached to the bottom of the inner cavity, and the first positioning foam is attached to the four sides of the side walls. The LCD screen is then placed inside the cavity. At this point, the bottom foam and the first positioning foam on the sides work together to buffer and position the screen, effectively preventing displacement or damage during assembly. Next, double-sided silicone grease is applied to the foam surface to position the back of the LCD screen one by one within the inner cavity. Then, the curved protective cover, which has been screen-printed and formed, is precisely positioned using the second positioning foam at the four corners and placed on top of the curved positioning fixture. Finally, a flexible syringe needle is used to apply adhesive to the gap between the curved protective cover and the LCD screen. A pressure block is applied above the curved protective cover, and the assembly is left to stand for a preset time to complete the curing and bonding. Finally, the finished product is removed and residual adhesive is cleaned, resulting in an integrated multi-panel curved touch screen. This fixture, through a combination of multi-cavity and positioning foam, achieves synchronous positioning and curved bonding of multiple LCD screens, significantly improving assembly accuracy and efficiency. The bottom foam, combined with silicone double-sided adhesive, provides both cushioning and temporary fixation. The side walls and four corner positioning foams ensure precise alignment of the LCD and the curved protective cover, preventing misalignment and adhesive overflow. The overall structure is simple, easy to operate, reusable, and suitable for the preparation of curved screens of various specifications, exhibiting good versatility and economy.

[0007] Furthermore, the inner cavity is provided with three cavities, each of which is divided into multiple accommodating cavities by a partition plate. Each accommodating cavity is used to place the foam, and the inner wall of the inner cavity is also provided with a stepped structure to facilitate the placement of the LCD screen.

[0008] Furthermore, the curved positioning fixture is an overall square frame structure, with an arc-shaped groove on its top that matches the shape of the curved protective cover plate.

[0009] Furthermore, the edge portion of the curved positioning fixture is provided with several through-hole ventilation grooves.

[0010] Furthermore, L-shaped stops are provided at the four corners of the curved positioning fixture.

[0011] Furthermore, the top of the arc-shaped groove is fitted with multiple positioning blocks, and the two ends of the positioning blocks are provided with concave grooves.

[0012] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: This utility model features a reasonable design that effectively solves industry problems such as low alignment accuracy and easy formation of air bubbles and displacement during the fabrication of multi-panel curved touchscreens. The fixture adopts a multi-cavity structure combined with bottom foam, silicone double-sided adhesive, and sidewall positioning foam to achieve synchronous buffering, positioning, and pre-bending of multiple LCD screens. The top arc groove, L-shaped stop, and positioning pressure block work together to ensure the stable placement and precise pressing of the curved protective cover, significantly improving assembly accuracy and interface bonding quality.

[0013] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0014] Figure 1 A schematic diagram of the tooling structure for pressing the multi-section curved touch screen of this utility model; Figure 2 A schematic diagram of the tooling structure before pressing of the multi-section curved touch screen of this utility model; Figure 3 A schematic diagram of the tooling used to manufacture the multi-section curved touchscreen of this utility model; Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A; Figure label: 1. Curved surface positioning fixture; 11. Ventilation groove; 12. L-shaped stop block; 2. Inner cavity; 21. Partition plate; 22. Step structure; 3. First positioning foam; 4. Second positioning foam; 5. Curved surface protective cover plate; 6. Positioning pressure block; 61. Concave groove. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] It should be noted that the structures not described in this utility model do not involve the design points and improvement directions of this utility model, and can all adopt existing technologies known to those skilled in the art.

[0020] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0021] See attached document Figure 1-4A multi-panel curved touchscreen manufacturing fixture includes a curved positioning jig 1. The curved positioning jig 1 has multiple inner cavities 2 in the middle for accommodating LCD screens. The bottom of each inner cavity 2 is sequentially covered with foam and silicone double-sided adhesive. The side walls of each inner cavity 2 are covered with removable first positioning foam 3. The four corners of the curved positioning jig 1 are also provided with second positioning foam 4 for positioning curved protective cover plates 5. In this embodiment, the curved positioning jig 1 enables precise alignment and assembly of multiple LCD screens with curved protective cover plates 5. In practice, firstly, foam is attached to the bottom of the inner cavity 2, and the first positioning foam 3 is attached to the four sides of the side walls. The LCD screen is then placed inside the cavity. At this time, the bottom foam and the first positioning foam 3 on the sides work together to buffer and position the screen, effectively preventing displacement or damage during assembly. Next, double-sided silicone adhesive is applied to the foam surface to position the back of the LCD screen one by one into the inner cavity 2. Then, the curved protective cover 5, which has been screen-printed and formed, is precisely positioned using the second positioning foam 4 at the four corners and placed above the curved positioning fixture 1. Finally, a flexible syringe needle is used to insert into the gap between the curved protective cover 5 and the LCD screen. Apply adhesive and apply a pressure block above the curved protective cover plate 5, allowing it to stand for a preset time to complete the curing and bonding. Finally, remove the finished product and clean off any residual adhesive to obtain an integrated multi-panel curved touch screen. This fixture, through a combination of multi-cavity and positioning foam, achieves synchronous positioning and curved bonding of multiple LCD screens, significantly improving assembly accuracy and efficiency. The bottom foam, combined with silicone double-sided adhesive, provides both cushioning and temporary fixation. The side walls and four corner positioning foams ensure precise alignment of the LCD and the curved protective cover plate 5, preventing misalignment and adhesive overflow. The overall structure is simple, easy to operate, reusable, and suitable for the preparation of curved screens of various specifications, exhibiting good versatility and economy.

[0022] The inner cavity 2 has three sections, each divided into multiple accommodating cavities by a partition plate 21. Each accommodating cavity is used to place the foam. The inner wall of the inner cavity 2 is also provided with a stepped structure 22 to facilitate the placement of the LCD screen. In this embodiment, the three inner cavities 2 can each accommodate three LCD screens. By aligning the LCD screen with the bottom edge of the stepped structure 22, the LCD screen can be accurately positioned within the cavity after the first positioning foam 3 is placed, effectively avoiding offset or misalignment and improving the subsequent alignment and bonding accuracy with the curved protective cover 5. By providing the stepped structure 22 in the inner cavity 2, a clear installation benchmark is provided for the LCD screen, significantly improving positioning accuracy and assembly consistency.

[0023] The curved positioning fixture 1 is a square frame structure with an arc groove on its top that matches the shape of the curved protective cover plate 5. In this embodiment, the top arc groove is designed to support and position the curved protective cover plate 5 that has been hot-bent, so that it maintains a stable curved shape during assembly and avoids deformation due to its own weight or external force, thereby ensuring the fitting accuracy with the LCD screen below.

[0024] The edge portion of the curved positioning fixture 1 is provided with several through-hole ventilation grooves 11. In this embodiment, the through-hole ventilation grooves 11 can prevent negative pressure adhesion between the curved protective cover plate 5 and the curved positioning fixture 1, and are also used to place the screen soft strip and the touch sensor soft strip.

[0025] The curved positioning fixture 1 has L-shaped blocks 12 at its four corners. In this embodiment, the L-shaped blocks 12 are used for lateral positioning of the protective cover glass. The second positioning foam 4 can be pasted on its inner side to prevent it from moving horizontally during the pressing and curing process, ensuring accurate alignment of the entire assembly and improving the reliability of the assembly and the yield of the finished product.

[0026] The top of the arc-shaped groove is fitted with multiple positioning blocks 6. The two ends of the positioning blocks 6 are provided with concave grooves 61. In this embodiment, after the protective cover glass and the LCD display module are aligned and placed, the operator holds the concave groove 61 to place the positioning blocks 6 on the arc-shaped groove, thereby applying uniform pressure to the protective cover glass to achieve pressing and positioning, preventing it from shifting or warping during the curing process of the adhesive, and ensuring that the curved surface bonding interface is uniform and stable.

[0027] Using the above-mentioned fabrication fixture, multi-panel curved touchscreens can be fabricated, as follows: S1: Provide a transparent flat glass, heat-bend it into a curved protective cover 5 with multiple display areas and connection areas, and screen print on a preset area of ​​the heat-bent curved protective cover 5. S2: Attach the touch screen sensor to the curved protective cover plate 5, and then attach the shielding mesh to the touch screen sensor to obtain the touch screen component module; S3: Foam and silicone double-sided adhesive are attached to the bottom of the cavity of the curved positioning fixture 1, and positioning foam is attached to the side wall. Multiple LCD screens are placed in the cavity and pressed to adhere to the silicone double-sided adhesive. After pre-bending, the side wall positioning foam is removed to obtain the display module. S4: Cover the four corners of the curved positioning fixture 1 with positioning foam, place the touch screen component module on the display module, and apply glue between the two. S5: Apply positioning pressure block 6 to the upper part of the component after applying glue, let it stand for a predetermined time, and then remove and clean it to obtain the multi-curved touch screen.

[0028] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A tooling for fabricating multi-section curved touchscreens, characterized in that: The device includes a curved positioning fixture (1), which has multiple inner cavities (2) in the middle for accommodating an LCD screen. The bottom of each inner cavity (2) is covered with foam and silicone double-sided adhesive. The side walls of each inner cavity (2) are covered with removable first positioning foam (3). The four corners of the curved positioning fixture (1) are also provided with second positioning foam (4) for positioning the curved protective cover plate (5).

2. The multi-curved touchscreen fabrication fixture according to claim 1, characterized in that: The inner cavity (2) is provided in three parts. Each inner cavity (2) is divided into multiple accommodating cavities by a partition plate (21). Each accommodating cavity is used to place the foam. The inner wall of the inner cavity (2) is also provided with a stepped structure (22) to facilitate the placement of the LCD screen.

3. The multi-curved touchscreen fabrication fixture according to claim 1, characterized in that: The curved positioning fixture (1) is a square frame structure, and its top is provided with an arc groove that matches the shape of the curved protective cover plate (5).

4. The multi-curved touchscreen fabrication fixture according to claim 1, characterized in that: The edge portion of the curved positioning fixture (1) is provided with several through-hole ventilation grooves (11).

5. The multi-curved touchscreen fabrication fixture according to claim 1, characterized in that: The curved positioning fixture (1) is provided with L-shaped stops (12) at its four corners.

6. The multi-curved touchscreen fabrication fixture according to claim 3, characterized in that: The top of the arc-shaped groove is fitted with multiple positioning blocks (6), and the two ends of the positioning blocks (6) are provided with concave grooves (61).

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