Flexible circuit board whole board adhesive structure

Abstract

The utility model provides flexible circuit board whole board paste glue structure, include: lower cover, upper cover, two limit boards, lifting assembly and adsorption subassembly, lower cover and upper cover can be mutually jointed and locked, two limit boards are located inside lower cover and upper cover respectively, lifting assembly is located inside lower cover, is used for controlling the up and down movement of limit board inside lower cover, adsorption subassembly is located on the outer wall of the limit board of upper cover, adsorption subassembly is used for the glue of the lamp on the limit board, the inside four corners of lower cover are equipped with the prop, the utility model discloses through setting the upper cover and lower cover of turning over, convenient and fast feeding and discharging, the lamp glue needing turning over is adsorbed and fixed through the fan, avoids the deviation in the turning over process, after the upper cover and lower cover are engaged and locked, the work piece is bonded with two lamp glues through the extrusion of lifting assembly to limit board, realizes fast, high accuracy's paste glue operation, improves the paste glue quality and production efficiency, reduces the production cost.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone screen assembly equipment technology, and in particular to a flexible circuit board whole-board adhesive bonding structure. Background Technology

[0002] Flexible circuit boards (PCBs) are printed circuit boards made with polyimide or polyester film as the substrate. They are highly reliable and extremely flexible, featuring high wiring density, light weight, thinness, and good bendability. They are widely used in the internal connections of electronic devices such as mobile phones, tablets, and wearable devices. Full-board adhesive bonding refers to the process of applying adhesive materials such as tape or film to the entire surface of the flexible circuit board.

[0003] In existing technologies, traditional manual adhesive application methods are inefficient and the quality of adhesive application is difficult to guarantee. Problems such as uneven application, air bubbles, and positional deviations are prone to occur, affecting the performance and reliability of flexible circuit boards.

[0004] To address this issue, we propose a flexible circuit board whole-board adhesive bonding structure to solve the problems of uneven adhesive bonding and poor precision in existing technologies. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a flexible circuit board whole-board adhesive bonding structure to solve the problems of uneven adhesive bonding and poor precision in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides a flexible circuit board whole-board adhesive bonding structure, including: a lower cover, an upper cover, two limiting plates, a lifting assembly and an adsorption assembly, wherein the lower cover and the upper cover can be interlocked and locked together;

[0007] The two limiting plates are located inside the lower cover and the upper cover, respectively. The lifting assembly is located inside the lower cover and is used to control the up and down movement of the limiting plate inside the lower cover. The adsorption assembly is located on the outer wall of the limiting plate of the upper cover and is used for the lamp adhesive on the adjacent limiting plate. The lower cover has four support pillars at its four corners, and the four support pillars pass through the four corners of the limiting plate inside the lower cover.

[0008] Preferably, a pivot is provided between the lower cover and the upper cover, and the three are arranged side by side. Rotating arms are connected to the opposite sides of the lower cover and the upper cover. The pivot passes through all the rotating arms and is rotatably connected to them.

[0009] Preferably, the upper end of the lower cover is provided with a square protrusion, and the top of the upper cover is provided with a groove that matches the protrusion.

[0010] Preferably, the outer side walls of the lower cover and the upper cover are provided with matching buckles. The buckles include a fixing block located in the middle of the outer side wall of the lower cover. Both ends of the fixing block are provided with locking blocks. Both locking blocks can slide along the long side of the fixing block, and both locking blocks have inclined surfaces on opposite sides. A return spring is connected between the two locking blocks and the inner side wall of the fixing block. A lever is connected to the outer side wall of the locking block. The lever passes through the fixing block and extends to the outside of the fixing block. A U-shaped block is connected in the middle of the outer side wall of the upper cover. Both inner side walls of the U-shaped block are provided with locking grooves that match the locking blocks.

[0011] Preferably, both upper ends of the two limiting plates are provided with ribs, and the height of the ribs is lower than the thickness of the external lamp adhesive.

[0012] Preferably, the limiting plate inside the upper cover is provided with positioning buckles at the four corners, and the positioning buckles are matched with the support column.

[0013] Preferably, the lifting assembly includes a threaded cylinder at the bottom of a limiting plate inside the lower cover, a screw connected to the middle of the threaded cylinder, and a gear set connected to the lower end of the screw extending to the outside of the threaded cylinder. The gear set is connected to a motor.

[0014] Preferably, the adsorption assembly includes a fan disposed inside the upper cover, and the limiting plate inside the upper cover is provided with a plurality of ventilation holes.

[0015] As described above, the flexible circuit board whole-board adhesive bonding structure disclosed in this utility model has the following beneficial effects:

[0016] This utility model features a flip-up upper and lower cover for convenient and rapid loading and unloading. A fan is used to adsorb and fix the lamp adhesive to be flipped, preventing it from shifting during the flipping process. After the upper and lower covers are engaged and locked, a lifting component squeezes the limiting plate to bond the workpiece to the two lamp adhesives, achieving a fast and high-precision adhesive application operation, improving adhesive application quality and production efficiency, and reducing production costs.

[0017] This invention uses two ridges on the surface of the limiting plate with a height smaller than the thickness of the lamp adhesive to limit the position of the lamp adhesive, making it easier to quickly locate the lamp adhesive and improve feeding efficiency. At the same time, by setting a large and small gear set in the lifting assembly, the rotation of the screw is reduced, the lifting accuracy of the limiting plate is improved, and excessive pressure is avoided to prevent damage to the workpiece.

[0018] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. Attached Figure Description

[0019] Figure 1 The image shown is a perspective view of the overall adhesive bonding structure of the flexible circuit board of this utility model.

[0020] Figure 2 The image shown is a three-dimensional view of the snap-fit ​​structure of the flexible circuit board of this utility model.

[0021] Figure 3 The image shown is a three-dimensional view of the limiting plate, which represents the overall adhesive bonding structure of the flexible circuit board of this utility model.

[0022] Figure 4 The image shown is a perspective view of the lifting assembly, which represents the overall adhesive bonding structure of the flexible circuit board of this utility model.

[0023] Figure 5 The image shown is a bottom-view perspective view of the overall adhesive bonding structure of the flexible circuit board of this utility model.

[0024] Component designation explanation

[0025] 1. Lower cover; 2. Upper cover; 3. Limiting plate; 4. Lifting assembly; 5. Adsorption assembly; 6. Support column; 8. Buckle;

[0026] 10. Protrusion; 20. Groove;

[0027] 30. Ribbons;

[0028] 40. Threaded cylinder; 41. Screw; 42. Gear set; 43. Motor;

[0029] 50. Fan; 51. Ventilation opening;

[0030] 60. Positioning buckle;

[0031] 70. Rotating shaft; 71. Rotating arm;

[0032] 80. Fixing block; 81. Locking block; 82. Return spring; 83. Paddle; 84. U-shaped block. Detailed Implementation

[0033] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0034] Please see Figures 1 to 5It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0035] like Figure 1-2 As shown, this utility model provides a flexible circuit board whole board adhesive bonding structure, including: a lower cover 1, an upper cover 2, two limiting plates 3, a lifting component 4 and an adsorption component 5, wherein the lower cover 1 and the upper cover 2 can be interlocked and locked together.

[0036] Two limiting plates 3 are located inside the lower cover 1 and the upper cover 2, respectively. The lifting assembly 4 is located inside the lower cover 1 and is used to control the up and down movement of the limiting plate 3 inside the lower cover 1. The upper cover 2 is fixed to the limiting plate 3 inside the upper cover 2. The adsorption assembly 5 is located on the outer wall of the limiting plate 3 of the upper cover 2. The adsorption assembly 5 is used for the lamp adhesive on the adjacent limiting plate 3. The lower cover 1 has four support pillars 6 at its four corners, and the four support pillars 6 pass through the four corners of the limiting plate 3 inside the lower cover 1. In use, the reverse side of the adhesive is placed on the limiting plate 3 of the lower cover 1, and then the workpiece is covered. The support column 6 can pass through the four corners of the workpiece to limit its movement and prevent it from shifting. The front side of the adhesive is placed on the limiting plate 3 of the upper cover 2, and is positioned by the adsorption component 5. The upper cover 2 and the lower cover 1 are then locked together, placing the front side of the adhesive above the workpiece. The lifting component 4 controls the limiting plate 3 inside the lower cover 1 to move upward, allowing the front and reverse sides of the adhesive to adhere to the workpiece. After the operation is completed, the adsorption component 5 is closed and the upper cover 2 is removed to take out the workpiece. This structure facilitates efficient and accurate adhesive application to the entire flexible circuit board, improving adhesive quality and production efficiency while reducing production costs.

[0037] In one embodiment, a rotating shaft 70 is provided between the lower cover 1 and the upper cover 2, and the three are arranged side by side. Rotating arms 71 are connected to the opposite sides of the lower cover 1 and the upper cover 2. The rotating shaft 70 passes through all the rotating arms 71 and is rotatably connected to them. This structure facilitates the rotatable connection of the lower cover 1 and the upper cover 2, ensures structural integrity, and enables quick snap-fitting of the lower cover 1 and the upper cover 2.

[0038] In one embodiment, the upper end of the lower cover 1 is provided with a square protrusion 10, the protrusion 10 being made of rubber, and the top of the upper cover 2 is provided with a groove 20 that matches the protrusion 10. This improves the flexibility of the protrusion 10 and the groove 20 when they rotate and engage, avoiding motion interference or reduced tightness caused by angular relationships.

[0039] In one embodiment, the outer walls of the lower cover 1 and the upper cover 2 are provided with matching buckles 8. The buckles 8 include a fixing block 80 located in the middle of the outer wall of the lower cover 1. Both ends of the fixing block 80 are provided with locking blocks 81. Both locking blocks 81 can slide along the long side of the fixing block 80, and both locking blocks 81 have inclined surfaces on opposite sides. A return spring 82 is connected between the two locking blocks 81 and the inner wall of the fixing block 80. The return spring 82 is used for quick reset of the locking blocks 81. In the initial stage, the return spring 82 presses the locking blocks 81 so that the locking blocks 81 are located on the outer wall of the fixing block 80. A lever 83 is connected to the outer wall of the locking blocks 81. The lever 83 passes through the fixing block 80 and extends to the outside of the fixing block 80. A U-shaped block 84 is connected to the middle of the outer wall of the upper cover 2. Both inner walls of the U-shaped block 84 are provided with locking grooves that match the locking blocks 81. During the flipping process of the upper cover 2, the two side walls of the U-shaped block 84 press against the two locking blocks 81. The inclined surface of the locking blocks 81 converts the direction of force, causing the two locking blocks 81 to retract into the interior of the fixing block 80, and driving the return spring 82 to be compressed. When the two locking blocks 81 are aligned with the slots of the U-shaped block 84, the return spring 82 pushes the locking blocks 81 into the slots, thus locking the upper cover 2 and the lower cover 1. When opening, by moving the lever 83 towards the center of the fixing block 80, the locking blocks 81 retract into the interior of the fixing block 80, thus realizing the opening operation. This structure facilitates the rapid opening and closing of the upper cover 2 and the lower cover 1, improving work efficiency.

[0040] In one embodiment, ribs 30 are provided on both sides of the upper end of the two limiting plates 3. The two ribs 30 on the same limiting plate 3 are used to limit the position of the lamp adhesive, so that the lamp adhesive is located between the two ribs 30. The height of the ribs 30 is lower than the thickness of the external lamp adhesive, so as to avoid the ribs 30 causing pressure damage to the workpiece during extrusion bonding, and at the same time affecting the bonding quality between the lamp adhesive and the workpiece.

[0041] In one embodiment, the four corners of the limiting plate 3 inside the upper cover 2 are provided with positioning buckles 60, which match the support column 6. When the upper cover 2 and the lower cover 1 are engaged, the top of the support column 6 is inserted into the positioning buckle 60, further improving the stability and accuracy of positioning.

[0042] In one embodiment, the lifting assembly 4 includes a threaded cylinder 40 located at the bottom of a limiting plate 3 inside the lower cover 1. A screw 41 is connected to the middle of the threaded cylinder 40, and the screw 41 is connected to the lower cover 1 and can rotate around its own center line. The lower end of the screw 41 extends to the outside of the threaded cylinder 40 and is connected to a gear set 42. The gear set 42 consists of a large gear and a small gear meshing with each other. The screw 41 passes through the middle of the large gear and is fixed to it. The gear set 42 is connected to a motor 43, and the output shaft of the motor 43 passes through the middle of the small gear and is fixed to it. The arrangement of the large gear and the small gear helps to improve the lifting accuracy. In use, the motor 43 is started, and the motor 43 controls the screw 41 to rotate through the gear set 42. The screw 41, by rotating, pushes the threaded cylinder 40 and the limiting plate 3 to move up and down.

[0043] In one embodiment, the adsorption component 5 includes a fan 50 disposed inside the upper cover 2, and a limiting plate 3 inside the upper cover 2 is provided with a plurality of ventilation holes 51. By rotating the fan 50, the lamp adhesive is adsorbed onto the surface of the limiting plate 3, which is beneficial for fixing the lamp adhesive during movement.

[0044] The specific usage process of this utility model is as follows: The reverse light adhesive is placed on the limiting plate 3 inside the lower cover 1, and located between the two ribs 30. The workpiece is then placed on the limiting plate 3 inside the lower cover 1, so that the four pillars 6 pass through the four corners of the workpiece to limit its position. The front light adhesive is then placed on the limiting plate 3 inside the upper cover 2, and located between the two ribs 30. The front light adhesive is adsorbed onto the surface of the limiting plate 3 by the fan 50. The upper cover 2 is flipped over so that the lower cover 1 and the upper cover 2 are engaged and locked. The motor 43 is started, and the motor 43 controls the screw 41 to rotate through the gear set 42. The screw 41 pushes the threaded cylinder 40 and the limiting plate 3 upward by rotating, so that the workpiece is bonded to the front light adhesive and the reverse light adhesive.

[0045] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A flexible circuit board with a full-board adhesive bonding structure, characterized in that, include: The lower cover (1), the upper cover (2), two limiting plates (3), the lifting assembly (4) and the adsorption assembly (5) are provided, wherein the lower cover (1) and the upper cover (2) can be interlocked and locked together; The two limiting plates (3) are located inside the lower cover (1) and the upper cover (2) respectively. The lifting component (4) is located inside the lower cover (1) and is used to control the upper and lower movement of the limiting plate (3) inside the lower cover (1). The adsorption component (5) is located on the outer wall of the limiting plate (3) of the upper cover (2). The adsorption component (5) is used for the lamp adhesive on the adjacent limiting plate (3). The lower cover (1) has four pillars (6) at its four corners. The four pillars (6) pass through the four corners of the limiting plate (3) inside the lower cover (1) respectively.

2. The flexible circuit board whole-board adhesive bonding structure according to claim 1, characterized in that: A pivot (70) is provided between the lower cover (1) and the upper cover (2), and the three are arranged side by side. Rotating arms (71) are connected to the opposite sides of the lower cover (1) and the upper cover (2). The pivot (70) passes through all the rotating arms (71) and is rotatably connected to them.

3. The flexible circuit board whole-board adhesive bonding structure according to claim 1, characterized in that: The upper end of the lower cover (1) is provided with a square protrusion (10), and the top of the upper cover (2) is provided with a groove (20) that matches the protrusion (10).

4. The flexible circuit board whole-board adhesive bonding structure according to claim 1, characterized in that: The lower cover (1) and the upper cover (2) are provided with matching buckles (8) on their outer side walls. The buckle (8) includes a fixing block (80) located in the middle of the outer side wall of the lower cover (1). Both ends of the fixing block (80) are provided with locking blocks (81). Both locking blocks (81) can slide along the long side of the fixing block (80), and both locking blocks (81) have inclined surfaces on their opposite sides. Both locking blocks (81) are connected to the inner side wall of the fixing block (80) with a return spring (82). The outer side wall of the locking block (81) is connected with a paddle (83). The paddle (83) passes through the fixing block (80) and extends to the outside of the fixing block (80). The middle of the outer side wall of the upper cover (2) is connected with a U-shaped block (84). Both ends of the inner side wall of the U-shaped block (84) are provided with locking grooves that match the locking blocks (81).

5. The flexible circuit board whole-board adhesive bonding structure according to claim 1, characterized in that: Both upper ends of the two limiting plates (3) are provided with ribs (30), and the height of the ribs (30) is lower than the thickness of the external lamp adhesive.

6. The flexible circuit board whole-board adhesive bonding structure according to claim 1, characterized in that: The four corners of the limiting plate (3) inside the upper cover (2) are provided with positioning buckles (60), and the positioning buckles (60) are matched with the support column (6).

7. The flexible circuit board whole-board adhesive bonding structure according to claim 1, characterized in that: The lifting assembly (4) includes a threaded cylinder (40) located at the bottom of the limiting plate (3) inside the lower cover (1). A screw (41) is connected to the middle of the threaded cylinder (40). The lower end of the screw (41) extends to the outside of the threaded cylinder (40) and is connected to a gear set (42). The gear set (42) is connected to a motor (43).

8. The flexible circuit board whole-board adhesive bonding structure according to claim 1, characterized in that: The adsorption component (5) includes a fan (50) disposed inside the upper cover (2), and the limiting plate (3) inside the upper cover (2) is provided with a plurality of ventilation holes (51).

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