Improved double-sided foam adhesive tape attaching jig

Abstract

The utility model provides an improved double-sided foam adhesive tape attaching jig, and belongs to the technical field of attaching jigs. Comprising a workbench and further comprises a lower positioning assembly, and the lower positioning assembly comprises a square plate fixed to the top of the workbench. According to the utility model, through the arrangement of the plane I and the curved surface I, the double-sided foam rubber is firstly placed on the rubber supporting strip, then the touch screen is inversely buckled in the square groove and is pressed downwards by the upper positioning assembly to be accurately positioned, then the driving piece I drives the rubber supporting strip to move upwards, and the plane part, corresponding to the rubber supporting strip, of the double-sided foam rubber is firstly in contact with the touch screen; and along with upward movement, the curved surface I gradually approaches and extrudes the double-sided foam rubber, so that the double-sided foam rubber is tightly attached to the bottom of the touch screen, the double-sided foam rubber is attached in a gradual contact manner, air at the double-sided foam rubber is smoothly discharged, bubbles are prevented from being generated, the attaching tightness of the double-sided foam rubber and the touch screen is not influenced, and the product quality is guaranteed. And the yield of the produced liquid crystal display is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to solid waste harmless treatment technical field, especially in kind of improved double -sided foam cotton glue attachment fixture. BACKGROUND

[0002] Between touch -sensitive screen and liquid crystal display module use double -sided foam cotton glue to adhere and fix, adhere and fix good touch -sensitive screen's liquid crystal display module is called TLCM (touch liquid crystal display), wherein when sticking touch -sensitive screen on liquid crystal display module through double -sided foam cotton glue, need to use double -sided foam cotton glue attachment fixture, place double -sided foam cotton glue in the positioning groove of attachment fixture, then tear off the release film of double -sided foam cotton glue, then place touch -sensitive screen in the attachment fixture in the way of upside -down and press down touch -sensitive screen, realize the connection of double -sided foam cotton glue and touch -sensitive screen, then move touch -sensitive screen with double -sided foam cotton glue to liquid crystal display module, tear off the release film on the other side of double -sided foam cotton glue, then stick touch -sensitive screen on liquid crystal display module through double -sided foam cotton glue.

[0003] The common double -sided foam cotton glue attachment fixture places double -sided foam cotton glue in the positioning groove of attachment fixture when using, and the plane position of double -sided foam cotton glue and the inner wall bottom of positioning groove is contacted, then place touch -sensitive screen in the attachment fixture in the way of upside -down and press down touch -sensitive screen, realize the connection of double -sided foam cotton glue and touch -sensitive screen, but because double -sided foam cotton glue is pasted in the bottom of touch -sensitive screen in the way of mutual extrusion between the plane of inner wall and the plane of touch -sensitive screen bottom, is influenced by the mutual extrusion of plane and plane, when double -sided foam cotton glue and touch -sensitive screen contact, air is difficult to discharge smoothly, is easy to gather in the contact part of two, and further produce air bubble, influence the close degree of double -sided foam cotton glue and touch -sensitive screen, thereby reduce the yield of liquid crystal display, therefore, the application provides an improved double -sided foam cotton glue attachment fixture to meet the demand. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide an improved double -sided foam cotton glue attachment fixture to solve the technical problem that when double -sided foam cotton glue and touch -sensitive screen contact, air is difficult to discharge smoothly, is easy to gather in the contact part of two, and further produce air bubble, influence the close degree of double -sided foam cotton glue and touch -sensitive screen, thereby reduce the yield of liquid crystal display.

[0005] To solve the above technical problem, the utility model provides the following technical scheme:

[0006] An improved double -sided foam cotton glue attachment fixture, including workbench, still includes:

[0007] The lower positioning assembly includes a square plate fixed to the top of the worktable. A square groove is formed on the top of the square plate. A positioning ring is fixed to the bottom of the inner wall of the square groove. An annular groove is formed on the bottom of the inner wall of the square groove. The side of the inner wall of the annular groove near the center of the square plate is flush with the outer wall of the positioning ring. A rubber support ring and a square ring are slidably connected between the outer wall of the positioning ring and the inner wall of the annular groove. The square ring is fixed to the bottom of the rubber support ring. The top of the rubber support ring is respectively provided with a plane and two curved surfaces. The plane is located between the two curved surfaces and is used to connect the two curved surfaces. Several connecting posts are fixed to the bottom of the square ring. The bottom of the connecting posts movably passes through the square plate and is fixed with a movable plate. A through groove is formed on the top of the worktable. A U-shaped frame is fixed to the bottom of the square plate. A driving component is fixed to the bottom of the U-shaped frame. The U-shaped frame and the movable plate are both located in the through groove, and the bottom of the movable plate is fixedly connected to the telescopic end of the driving component.

[0008] The upper positioning component includes a bracket fixed to the top of the worktable, a second driving component fixed to the top of the bracket, an upper pressure plate fixed to the telescopic end of the second driving component, and a flexible pressure ring fixed to the bottom of the upper pressure plate, the flexible pressure ring being located directly above the rubber support ring.

[0009] Preferably, the curved surface has a plurality of protrusions.

[0010] Preferably, the top of the protrusion is provided with a second plane and two second curved surfaces, the second plane is connected to the two second curved surfaces, the first plane is connected to the second plane, and the first curved surface is connected to the second curved surface.

[0011] Preferably, a groove is formed at the bottom of the protrusion.

[0012] Preferably, the flexible pressure ring is a rubber ring.

[0013] Preferably, the outer wall of the positioning ring is provided with an inclined guide surface near the top.

[0014] Preferably, both the first driving component and the second driving component are cylinders.

[0015] Preferably, the bottom of the workbench is equipped with anti-slip feet.

[0016] Compared with the prior art, this utility model has at least the following beneficial effects:

[0017] In the above solution, by setting up a flat surface and a curved surface, the double-sided foam adhesive is first placed on the rubber support strip. Then, the touch screen is placed upside down in the square groove and positioned precisely by pressing down with the upper positioning component. Next, the driving component moves the rubber support strip upward. The flat part of the double-sided foam adhesive corresponding to the rubber support strip first contacts the touch screen. As it moves upward, the curved surface gradually approaches and squeezes the double-sided foam adhesive, making it tightly adhere to the bottom of the touch screen. The adhesion of the double-sided foam adhesive is achieved by gradually contacting it, allowing air to be smoothly discharged from the double-sided foam adhesive and preventing the formation of air bubbles. This not only does not affect the tightness of the adhesion between the double-sided foam adhesive and the touch screen, but also ensures product quality and significantly improves the yield rate of LCD production.

[0018] By designing the protrusions, when the double-sided foam adhesive is placed on the rubber support strip, the first plane on the rubber support strip supports the double-sided foam adhesive. At the same time, while the double-sided foam adhesive is in contact with the first plane, it also contacts the second plane on the top of the protrusion. The second plane of the protrusion increases the support area of ​​the double-sided foam adhesive on the rubber support strip, ensuring the flatness of the double-sided foam adhesive on the rubber support strip, improving the positioning stability and accuracy of the double-sided foam adhesive, and further ensuring the bonding quality between the double-sided foam adhesive and the touch screen.

[0019] By using the groove design, when the double-sided foam adhesive needs to be moved upward and squeezed, the protrusion applies stable and continuous pressure to the double-sided foam adhesive, ensuring the stable implementation of the bonding process. At the same time, the groove at the bottom of the protrusion provides space for the deformation of the protrusion, thereby preventing the protrusion from excessively squeezing the double-sided foam adhesive, and further ensuring the bonding quality between the double-sided foam adhesive and the touch screen. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the flexible pressure ring of this utility model;

[0022] Figure 3 This is a cross-sectional view of the rubber support ring of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the square groove of this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the annular groove of this utility model;

[0025] Figure 6 This is a three-dimensional structural diagram of the rubber support ring of this utility model;

[0026] Figure 7 For the present utility model Figure 6 Enlarged view of the structure at point A in the middle.

[0027] Figure Labels

[0028] 1. Worktable; 2. Lower positioning assembly; 3. Square groove; 4. Annular groove; 5. Positioning ring; 6. Square plate; 7. Rubber support ring; 8. Plane 1; 9. Curved surface 1; 10. Protrusion; 11. Groove; 12. Curved surface 2; 13. Plane 2; 14. Square ring; 15. Movable plate; 16. Drive component 1; 17. Upper positioning assembly; 18. Upper pressure plate; 19. Flexible pressure ring; 20. Drive component 2. Detailed Implementation

[0029] The improved double-sided foam adhesive attachment fixture provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0030] like Figures 1-7 As shown, an embodiment of this utility model provides an improved double-sided foam adhesive attaching fixture, including a workbench 1, and further comprising:

[0031] The lower positioning component 2 includes a square plate 6 fixed to the top of the workbench 1. A square groove 3 is formed on the top of the square plate 6. A positioning ring 5 is fixed to the bottom of the inner wall of the square groove 3. An annular groove 4 is formed on the bottom of the inner wall of the square groove 3. The side of the inner wall of the annular groove 4 closest to the center of the square plate 6 is flush with the outer wall of the positioning ring 5. A rubber support ring 7 and a square ring 14 are slidably connected between the outer wall of the positioning ring 5 and the inner wall of the annular groove 4. The square ring 14 is fixed to the bottom of the rubber support ring 7. The top part of the rubber support ring 7... The worktable 1 has a plane 8 and two curved surfaces 9. The plane 8 is located between the two curved surfaces 9 and is used to connect them. Several connecting posts are fixed to the bottom of the square ring 14. The bottom of the connecting posts movably passes through the square plate 6 and is fixed with a movable plate 15. A through slot is opened on the top of the worktable 1. A U-shaped frame is fixed to the bottom of the square plate 6. A driving component 16 is fixed to the bottom of the U-shaped frame. Both the U-shaped frame and the movable plate 15 are located in the through slot, and the bottom of the movable plate 15 is connected to the driving component 16. The telescopic end of 6 is fixedly connected. The square groove 3 provides a precise placement space for the rubber support ring 7, square ring 14, double-sided foam adhesive to be attached, and touch screen, limiting their operating area and ensuring the relative position accuracy of each component during the attachment process. The positioning ring 5 cooperates with the annular groove 4 to position the rubber support ring 7 and square ring 14 on the one hand, preventing them from shifting in the horizontal direction and ensuring the accuracy of the attachment process; on the other hand, the annular groove 4 provides a guide track for the up and down movement of the rubber support ring 7 and square ring 14, making their movement more stable and smooth. The flat surface 8 of the rubber support ring 7 can provide stable support for the double-sided foam adhesive in the initial stage, ensuring that the double-sided foam adhesive is placed stably. The curved surface 9 guides the air out from the double-sided foam adhesive by gradually approaching and squeezing it during the subsequent attachment process, so as to promote the double-sided foam adhesive to adhere tightly and evenly to the bottom of the touch screen in a gradual contact manner, ensuring the tightness of the double-sided foam adhesive and the touch screen.

[0032] The upper positioning component 17 includes a bracket fixed to the top of the worktable 1. A second driving component 20 is fixed to the top of the bracket, and an upper pressure plate 18 is fixed to the telescopic end of the second driving component 20. A flexible pressure ring 19 is fixed to the bottom of the upper pressure plate 18, and the flexible pressure ring 19 is located directly above the rubber support ring 7. The bracket provides a stable mounting base for the second driving component 20 and the upper pressure plate 18, ensuring that they do not shake during operation. The second driving component 20 serves as a power source to control the up and down movement of the upper pressure plate 18. The flexible pressure ring 19 at the bottom of the upper pressure plate 18 is positioned after the touch screen is inverted in the square groove 3. Driven downward by the second driving component 20, pressure is applied to the touch screen. Due to the flexibility of the flexible pressure ring 19, it can achieve precise and stable positioning of the touch screen, making it firmly in place, and prevent damage to the touch screen due to excessive pressure, ensuring the integrity of the touch screen during the bonding process. At the same time, it prevents the touch screen from shifting upward under force, creating a good environment for the accurate bonding of the double-sided foam adhesive to the touch screen. Through the above structure, the bonding fixture is improved, achieving stable bonding of the double-sided foam adhesive to the touch screen, preventing the generation of air bubbles, ensuring bonding quality, and thus improving the yield rate of LCD screen production.

[0033] like Figure 6 As shown in this embodiment, the curved surface 9 is provided with a plurality of protrusions 10; the design of the protrusions 10 improves the support stability of the upper plane 8 of the rubber support ring 7 for the double-sided foam adhesive, and ensures the flatness of the double-sided foam adhesive when it is placed, thereby helping to improve the quality of the double-sided foam adhesive when it is subsequently applied.

[0034] like Figure 6 and Figure 7 As shown, in this embodiment, the top of the protrusion 10 is provided with a second plane 13 and two second curved surfaces 12. The second plane 13 is connected to the two second curved surfaces 12, and the first plane 8 is connected to the second plane 13, while the first curved surface 9 is connected to the second curved surface 12. The second plane 13, by being connected to the first plane 8, expands the support range for the double-sided foam adhesive, enhances the support stability, and ensures that the double-sided foam adhesive maintains better flatness during the placement stage, which is beneficial to improving the subsequent bonding quality. The second curved surface 12 is connected to the first curved surface 9, which guides air out from more angles during the extrusion bonding process, further optimizing the air expulsion effect, reducing air bubble residue, and enabling the double-sided foam adhesive to adhere more tightly to the bottom of the touch screen, thereby improving the bonding quality.

[0035] like Figure 7 As shown, in this embodiment, a groove 11 is provided at the bottom of the protrusion 10; when the protrusion 10 applies stable and continuous pressure to the double-sided foam adhesive, the groove 11 provides space for the deformation of the protrusion 10 itself, effectively preventing the protrusion 10 from excessively squeezing the double-sided foam adhesive, thereby ensuring the bonding quality between the double-sided foam adhesive and the touch screen.

[0036] likeFigure 2 As shown, in this embodiment, the flexible pressure ring 19 is a rubber ring. The flexible pressure ring 19 is made of rubber material, which makes full use of the flexibility and elasticity of rubber. When pressure is applied to the touch screen, it can provide sufficient pressure to ensure the stable positioning of the touch screen, and can also buffer the impact caused by excessive pressure on the touch screen, protect the touch screen surface from being scratched or crushed, and extend the service life of the touch screen.

[0037] like Figure 5 As shown, in this embodiment, the outer wall of the positioning ring 5 is provided with an inclined guide surface near the top position; the inclined guide surface guides the double-sided foam adhesive when it is placed on the rubber support ring 7, thereby facilitating the placement of the double-sided foam adhesive.

[0038] like Figure 1 and Figure 2 As shown, in this embodiment, both the first driving component 16 and the second driving component 20 are cylinders. The cylinders are chosen as the first driving component 16 and the second driving component 20 because they have the advantages of smooth movement and high control precision. During the double-sided foam adhesive application process, the cylinders can accurately control the up and down movement of the rubber support ring 7 and the downward pressing action of the upper pressure plate 18, ensuring the accuracy and stability of the application action, thereby ensuring the bonding quality between the double-sided foam adhesive and the touch screen.

[0039] like Figure 1 As shown in this embodiment, the bottom of the worktable 1 is equipped with anti-slip feet; the installation of anti-slip feet increases the friction between the worktable 1 and the placement surface, preventing the worktable 1 from sliding due to external forces during the bonding operation, ensuring that the entire bonding fixture is in a stable state, and providing a reliable working environment for high-precision double-sided foam adhesive bonding.

[0040] Working principle: Place the double-sided foam adhesive on the plane 8 of the rubber support ring 7. At this time, the plane 8 provides basic support to ensure that the double-sided foam adhesive is placed stably. Peel off the release film on the double-sided foam adhesive. At the same time, the double-sided foam adhesive comes into contact with the plane 13 on the top of the protrusion 10, which can increase the support area and further ensure the flatness of the double-sided foam adhesive, and improve its positioning stability and accuracy.

[0041] Next, the touch screen is placed upside down in the square groove 3, and the upper positioning component 17 is activated. The piston rod of the second drive component 20 on the bracket extends and drives the upper pressure plate 18 to move downward. The flexible pressure ring 19 at the bottom of the upper pressure plate 18 applies pressure to the touch screen to achieve stable positioning of the touch screen and prevent the touch screen from moving upward under force.

[0042] Then, the driving component 16 of the lower positioning component 2 is activated. The piston rod of the driving component 16 extends and drives the square ring 14 to move upward along the inner wall of the annular groove 4 through the cooperation of the movable plate 15 and the connecting column. At the same time, the square ring 14 drives the rubber support ring 7 to move upward. During the upward movement of the rubber support ring 7, the double-sided foam adhesive corresponding to the flat part 8 of the rubber support ring 7 first contacts the touch screen to achieve initial adhesion. As the rubber support ring 7 continues to rise, the curved surface 9 at the top of the rubber support ring 7 gradually approaches and squeezes the double-sided foam adhesive. The double-sided foam adhesive is adhered by gradually contacting it, so that the air at the double-sided foam adhesive can be smoothly discharged, preventing air bubbles from being generated and ensuring tight adhesion.

[0043] At the same time, the protrusion 10 moves upward with the rubber support ring 7 and applies pressure to the double-sided foam adhesive to assist in the adhesion of the double-sided foam adhesive to the touch screen. However, when the protrusion 10 squeezes the double-sided foam adhesive, it will deform. The groove 11 at the bottom of the protrusion 10 reserves space for the deformation of the protrusion 10 itself, effectively preventing the protrusion 10 from excessively squeezing the double-sided foam adhesive, thereby ensuring the adhesion quality of the double-sided foam adhesive to the touch screen.

[0044] After bonding is completed, the second driving component 20 drives the upper pressure plate 18 to move upward, causing the upper pressure plate 18 to separate the flexible pressure ring 19 from the touch screen. At the same time, the piston rod of the first driving component 16 shortens, causing the rubber support ring 7 on the square ring 14 to move downward along the inner wall of the annular groove 4, realizing the separation of the rubber support ring 7 from the double-sided foam adhesive. Then, the touch screen with double-sided foam adhesive is removed from the square groove 3 of the square plate 6 for further processing.

[0045] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An improved double-sided foam adhesive attaching fixture, comprising a worktable (1), characterized in that, Also includes: The lower positioning component (2) includes a square plate (6) fixed to the top of the workbench (1). A square groove (3) is provided on the top of the square plate (6). A positioning ring (5) is fixed to the bottom of the inner wall of the square groove (3). An annular groove (4) is provided at the bottom of the inner wall of the square groove (3). The side of the inner wall of the annular groove (4) close to the center of the square plate (6) is flush with the outer wall of the positioning ring (5). A rubber support ring (7) and a square ring (14) are slidably connected between the outer wall of the positioning ring (5) and the inner wall of the annular groove (4). The square ring (14) is fixed to the bottom of the rubber support ring (7). The top of the rubber support ring (7) is... A plane (8) and two curved surfaces (9) are respectively provided. The plane (8) is located between the two curved surfaces (9). The plane (8) is used to connect the two curved surfaces (9). Several connecting columns are fixed at the bottom of the square ring (14). The bottom of the connecting columns can be moved through the square plate (6) and a movable plate (15) is fixed thereon. A through slot is opened at the top of the workbench (1). A U-shaped frame is fixed at the bottom of the square plate (6). A driving component (16) is fixed at the bottom of the U-shaped frame. The U-shaped frame and the movable plate (15) are both located in the through slot, and the bottom of the movable plate (15) is fixedly connected to the telescopic end of the driving component (16). The upper positioning component (17) includes a bracket fixed to the top of the worktable (1), a second driving component (20) is fixed to the top of the bracket, an upper pressure plate (18) is fixed to the telescopic end of the second driving component (20), and a flexible pressure ring (19) is fixed to the bottom of the upper pressure plate (18). The flexible pressure ring (19) is located directly above the rubber support ring (7).

2. The improved double-sided foam adhesive attachment fixture according to claim 1, characterized in that, The curved surface (9) is provided with several protrusions (10).

3. The improved double-sided foam adhesive attachment fixture according to claim 2, characterized in that, The top of the protrusion (10) is provided with a plane (13) and two curved surfaces (12). The plane (13) is connected to the two curved surfaces (12), and the plane (8) is connected to the plane (13), and the curved surface (9) is connected to the curved surface (12).

4. The improved double-sided foam adhesive attachment fixture according to claim 2, characterized in that, The bottom of the protrusion (10) is provided with a groove (11).

5. The improved double-sided foam adhesive attachment fixture according to claim 1, characterized in that, The flexible pressure ring (19) is a rubber ring.

6. The improved double-sided foam adhesive attachment fixture according to claim 1, characterized in that, The outer wall of the positioning ring (5) is provided with an inclined guide surface near the top.

7. The improved double-sided foam adhesive attachment fixture according to claim 1, characterized in that, Both drive component one (16) and drive component two (20) are cylinders.

8. The improved double-sided foam adhesive attachment fixture according to claim 1, characterized in that, The bottom of the workbench (1) is equipped with anti-slip feet.

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