Panel laminating device for liquid crystal display screen production

Abstract

The application relates to the technical field of liquid crystal display screen production, and discloses a panel laminating device for liquid crystal display screen production, which comprises a bottom plate, supporting legs fixed below the bottom plate, an upper frame fixed above the bottom plate, a placing frame fixed above the bottom plate, and compression springs fixed to the inner side of the placing frame. After the touch screen and the cover plate are placed, the connecting seat is driven to move downwards by starting the air cylinder, the connecting column, the torsional spring, the swing rod, the rectangular sleeve rod and the roller are driven to move downwards by the connecting seat, the air cylinder continues to apply a downward force when the roller contacts the upper side of the cover plate, the torsional spring is compressed, the two rollers move away from each other while adhering to the upper surface of the cover plate, the air cylinder is controlled to move upwards when the two rollers are 180 DEG, the two rollers move towards each other, and the process is repeated for several times. In the process, the roller always adheres to the upper surface of the cover plate, can extrude air bubbles as much as possible, and is convenient and accurate.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal display manufacturing technology, specifically to a panel bonding device for liquid crystal display manufacturing. Background Technology

[0002] Panel bonding is one of the core processes in LCD manufacturing. It primarily involves the precise adhesion of the LCD panel to components such as the touchscreen (TP), backlight module, and optical adhesive (OCA). The quality of this bonding directly determines the display's performance, touch sensitivity, structural stability, and lifespan. As display technology evolves towards higher screen-to-body ratios, narrower bezels, curved surfaces, and larger sizes, and as reliability requirements increase in industrial control, automotive, and outdoor displays, the industry has imposed increasingly stringent standards on the precision, stability, compatibility, and bubble suppression capabilities of panel bonding equipment. The bonding process has become a critical factor restricting the production capacity and yield of high-end LCD displays.

[0003] In existing LCD manufacturing processes, the bonding process between the touch screen and the cover plate typically involves pressing the cover plate vertically downwards. This method is prone to producing a large number of air bubbles, resulting in a low yield rate. Therefore, a panel bonding device for LCD manufacturing is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a panel bonding apparatus for liquid crystal display production, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a panel bonding device for liquid crystal display production, comprising a base plate, a support leg fixed below the base plate, an upper frame fixed above the base plate, a placement frame fixed above the base plate, a compression spring fixed inside the placement frame, a pressure plate fixed to the end of the compression spring, a cover-closing mechanism for easy bonding provided above the base plate, a heating mechanism for improving bonding effect provided above the base plate, a cleaning mechanism for cleaning dust from the cover plate provided above the base plate, and a vibration mechanism for cleaning the cover-closing mechanism provided above the base plate. The closing mechanism includes a cylinder, a connecting seat, a connecting column, a torsion spring, a swing rod, a rectangular sleeve rod, and a roller; the cylinder is fixed below the upper frame.

[0006] Preferably, the connecting seat is fixed to the lower end of the cylinder, the connecting column is fixed to the inner side wall of the connecting seat, the swing rod is hinged to the outer wall of the connecting column, and one end of the torsion spring is fixed to the inner side wall of the connecting seat.

[0007] Preferably, the other end of the torsion spring is fixedly connected to the swing rod, the rectangular sleeve passes through the swing rod and is fixedly connected at the point of penetration, the roller is rotatably connected to the outer wall of the rectangular sleeve, after the cylinder is started, the connecting seat moves downward, when the roller contacts the top of the cover plate, the cylinder continues to apply downward force, the torsion spring is compressed, so that the two rollers move in opposite directions against the upper surface of the cover plate, when the two rollers are 180° apart, the cylinder is controlled to move upward, and the two rollers move towards each other.

[0008] Preferably, the heating mechanism includes a friction ring and a friction plate; the friction ring is fixed to the outer wall of the rectangular sleeve rod, and the friction plate is fixed to the inner wall of the drum. The friction plate is in contact with the friction ring. Through the cooperation of the friction ring and the friction plate, during the rotation of the drum, the drum drives the friction plate on the inner wall to rotate synchronously, and the friction plate rubs against the friction ring, thereby generating heat, which is conducted to the outer wall of the drum.

[0009] Preferably, the cleaning mechanism includes: an L-shaped rod, an air box, a push plate, an air hole, a dust collection box, and a negative pressure pipe; the upper end of the L-shaped rod is fixed to the side wall of the connecting seat.

[0010] Preferably, the air box is fixed above the base plate, the L-shaped rod passes through the upper wall of the air box and is slidably connected at the point of penetration, the push plate is fixed to the lower end of the L-shaped rod, and the air hole is opened on the side wall of the air box.

[0011] Preferably, the vibration mechanism includes: a hollow cylinder, a striking rod, a reciprocating spring, a disc, and a convex ball; the hollow cylinder is fixed to the side wall of the swing rod.

[0012] Preferably, one end of the reciprocating spring is fixed to the bottom of the hollow cylinder, the striking rod is fixed to the other end of the reciprocating spring, the disc is fixed to the outer wall of the L-shaped rod, and the convex ball is fixed to the side wall of the disc.

[0013] Compared with the prior art, the present invention provides a panel bonding device for liquid crystal display production, which has the following advantages: 1. This LCD panel bonding device, through the coordinated use of a cylinder, connecting seat, connecting column, torsion spring, swing rod, rectangular sleeve rod, and rollers, allows the touch screen and cover plate to be placed. After the touch screen and cover plate are in place, the cylinder is activated to move the connecting seat downwards. The connecting seat drives the connecting column, torsion spring, swing rod, rectangular sleeve rod, and rollers downwards. When the rollers contact the top of the cover plate, the cylinder continues to apply downward force, compressing the torsion springs and causing the two rollers to move in opposite directions while adhering to the upper surface of the cover plate. When the two rollers are at 180°, the cylinder is controlled to move upwards, and the two rollers move towards each other. This process is repeated several times. During this process, the rollers always adhere to the upper surface of the cover plate, which can squeeze out air bubbles as much as possible, making it convenient and precise.

[0014] 2. This panel bonding device for LCD screen production uses a friction ring and a friction plate in combination. During the rotation of the roller, the roller drives the friction plate on the inner wall to rotate synchronously. The friction plate rubs against the friction ring, thereby generating heat. The heat is conducted to the outer wall of the roller, so that the roller also plays a heating role during the pressing of the upper surface of the cover plate, which makes the air bubbles between the cover plate and the touch screen better eliminated.

[0015] 3. This panel bonding device for LCD screen production uses an L-shaped rod, an air box, a push plate, air holes, a dust collection box, and a negative pressure pipe in combination. As the cylinder drives the connecting seat to move downward, the L-shaped rod is driven downward by the connecting seat, causing the push plate to move downward. This further causes the push plate to compress the air in the air box and spray it out from the air holes, blowing away the dust on the surface of the cover plate. The dust is then sucked away by the dust collection box, preventing dust on the surface of the cover plate from causing scratches during the pressing process.

[0016] 4. This panel bonding device for LCD screen production utilizes a hollow cylinder, a striking rod, a reciprocating spring, a disc, and a convex ball in cooperation. During the rotation of the swing rod, the swing rod drives the hollow cylinder to make a circular motion. When the striking rod presses against the convex ball, the reciprocating spring is compressed, causing the striking rod to move away from the convex ball. When the striking rod leaves the convex ball, under the elastic force of the reciprocating spring, the striking rod impacts the disc, thereby generating vibration. The vibration is transmitted to the roller through the swing rod, causing dust on the outer wall of the roller to fall down and be sucked away by the dust collection box, preventing dust on the surface of the roller from scratching the cover plate during the pressing process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the main body of the present invention; Figure 2 This is a schematic cross-sectional view of part of the structure of the present invention; Figure 3 This is a schematic cross-sectional view of a partial structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of structure A in the middle; Figure 5 This is a schematic cross-sectional view of part of the structure of the present invention.

[0018] In the diagram: 1. Base plate; 2. Upper frame; 3. Support leg; 4. Placement frame; 5. Pressure plate; 6. Compression spring; 7. Closing mechanism; 701. Cylinder; 702. Connecting seat; 703. Connecting column; 704. Torsion spring; 705. Swing rod; 706. Rectangular sleeve rod; 707. Roller; 8. Heating mechanism; 801. Friction ring; 802. Friction plate; 9. Cleaning mechanism; 901. L-shaped rod; 902. Air box; 903. Push plate; 904. Air hole; 905. Dust collection box; 906. Negative pressure pipe; 10. Vibration mechanism; 1001. Hollow cylinder; 1002. Striking rod; 1003. Reciprocating spring; 1004. Disc; 1005. Convex ball. Detailed Implementation

[0019] like Figures 1-5 As shown, the present invention provides a technical solution: a panel bonding device for LCD screen production, including a base plate 1, a support leg 3 fixed below the base plate 1, an upper frame 2 fixed above the base plate 1, a placement frame 4 fixed above the base plate 1, a compression spring 6 fixed inside the placement frame 4, a pressure plate 5 fixed at the end of the compression spring 6, and a cover closing mechanism 7 for easy bonding provided above the base plate 1. The closing mechanism 7 includes: a cylinder 701, a connecting seat 702, a connecting column 703, a torsion spring 704, a swing rod 705, a rectangular sleeve rod 706, and a roller 707. The cylinder 701 is fixed below the upper frame 2, the connecting seat 702 is fixed to the lower end of the cylinder 701, the connecting column 703 is fixed to the inner wall of the connecting seat 702, the swing rod 705 is hinged to the outer wall of the connecting column 703, one end of the torsion spring 704 is fixed to the inner wall of the connecting seat 702, and the other end of the torsion spring 704 is connected to the swing rod 705. A rectangular sleeve 706 is fixedly connected, passing through the swing rod 705 and fixedly connected at the point of penetration. A roller 707 is rotatably connected to the outer wall of the rectangular sleeve 706. After the cylinder 701 is started, the connecting seat 702 moves downward. When the roller 707 contacts the top of the cover plate, the cylinder 701 continues to apply a downward force, and the torsion spring 704 is compressed, causing the two rollers 707 to move in opposite directions against the upper surface of the cover plate. When the two rollers 707 are at 180°, the control cylinder 701 moves upward, and the two rollers 707 move towards each other.

[0020] By using the cylinder 701, connecting seat 702, connecting column 703, torsion spring 704, swing rod 705, rectangular sleeve rod 706, and roller 707 in coordination, after the touch screen and cover plate are placed, the cylinder 701 is activated to move the connecting seat 702 downward. The connecting seat 702 drives the connecting column 703, torsion spring 704, swing rod 705, rectangular sleeve rod 706, and roller 707 downward. When the roller 707 contacts the top of the cover plate, the cylinder 701 continues to apply downward force, and the torsion spring 704 is compressed, causing the two rollers 707 to move in opposite directions while adhering to the upper surface of the cover plate. When the two rollers 707 are at 180°, the cylinder 701 is controlled to move upward, and the two rollers 707 move towards each other. This process is repeated several times. During this process, the rollers 707 always adhere to the upper surface of the cover plate, which can squeeze out air bubbles as much as possible, which is convenient and precise.

[0021] A heating mechanism 8 for improving the bonding effect is provided above the base plate 1. The heating mechanism 8 includes a friction ring 801 and a friction plate 802. The friction ring 801 is fixed to the outer wall of the rectangular sleeve rod 706, and the friction plate 802 is fixed to the inner wall of the roller 707. The friction plate 802 is in contact with the friction ring 801.

[0022] With the combined use of friction ring 801 and friction plate 802, during the rotation of roller 707, roller 707 drives the friction plate 802 on the inner wall to rotate synchronously. The friction plate 802 rubs against friction ring 801, thereby generating heat. The heat is conducted to the outer wall of roller 707, so that roller 707 also plays a heating role during the pressing of the upper surface of cover plate, which makes the air bubbles between cover plate and touch screen better eliminated.

[0023] A cleaning mechanism 9 for cleaning dust from the cover plate is provided above the base plate 1. The cleaning mechanism 9 includes: an L-shaped rod 901, an air box 902, a push plate 903, an air hole 904, a dust collection box 905, and a negative pressure pipe 906. The upper end of the L-shaped rod 901 is fixed to the side wall of the connecting seat 702. The air box 902 is fixed above the base plate 1. The L-shaped rod 901 passes through the upper wall of the air box 902 and is slidably connected at the point of penetration. The push plate 903 is fixed to the lower end of the L-shaped rod 901. The air hole 904 is opened on the side wall of the air box 902.

[0024] Through the coordinated use of L-shaped rod 901, air box 902, push plate 903, air hole 904, dust collection box 905, and negative pressure pipe 906, as the cylinder 701 drives the connecting seat 702 to move downward, the L-shaped rod 901 is driven downward by the connecting seat 702, causing the push plate 903 to move downward. This further compresses the air in the air box 902 and sprays it out from the air hole 904, blowing away the dust on the upper surface of the cover plate. The dust collection box 905 then sucks away the dust, preventing dust on the upper surface of the cover plate from causing scratches during the pressing process.

[0025] A vibration mechanism 10 for a cleaning and closing mechanism 7 is provided above the base plate 1. The vibration mechanism 10 includes: a hollow cylinder 1001, a striking rod 1002, a reciprocating spring 1003, a disc 1004, and a convex ball 1005. The hollow cylinder 1001 is fixed to the side wall of the swing rod 705, one end of the reciprocating spring 1003 is fixed to the bottom of the hollow cylinder 1001, the striking rod 1002 is fixed to the other end of the reciprocating spring 1003, the disc 1004 is fixed to the outer wall of the L-shaped rod 901, and the convex ball 1005 is fixed to the side wall of the disc 1004. Through the coordinated use of the hollow cylinder 1001, the striking rod 1002, the reciprocating spring 1003, the disc 1004, and the convex ball 1005, the vibration mechanism 10 vibrates on the swing rod 705. During the rotation of 705, the swing rod 705 drives the hollow cylinder 1001 to make a circular motion. When the striking rod 1002 presses against the convex ball 1005, the reciprocating spring 1003 is compressed, causing the striking rod 1002 to move away from the convex ball 1005. When the striking rod 1002 leaves the convex ball 1005, under the elastic force of the reciprocating spring 1003, the striking rod 1002 impacts the disc 1004, thereby generating vibration. The vibration is transmitted to the roller 707 through the swing rod 705, causing the dust on the outer wall of the roller 707 to fall down and be sucked away by the dust collection box 905, preventing the cover plate from being scratched during the pressing process due to dust on the surface of the roller 707.

[0026] Working principle: First, the operator places the touchscreen to be bonded in the placement frame 4 and clamps the sides of the touchscreen using the pressure plate 5 and the clamping spring 6. Next, adhesive is applied to the top of the touchscreen, and then the cover plate is placed on top of the touchscreen, also clamping the sides of the cover plate using the pressure plate 5. The negative pressure pipe 906 is connected to the suction device. Then, the cylinder 701 is controlled to move downwards, and the connecting seat 702 drives the connecting column 703, torsion spring 704, swing rod 705, rectangular sleeve rod 706, and roller 707 to move downwards. When the roller 707 contacts the top of the cover plate, the cylinder 701 continues to apply a downward force, compressing the torsion spring 704, causing the two rollers 707 to move in opposite directions while adhering to the upper surface of the cover plate. When the two rollers 707 are at 180°, the cylinder 701 is controlled to move upward, and the two rollers 707 move towards each other. This process is repeated several times. During this process, the rollers 707 always adhere to the upper surface of the cover plate and apply downward pressure. As the rollers 707 rotate, they drive the friction plates 802 on the inner wall to rotate synchronously. 02. Friction is applied to the friction ring 801, generating heat that is conducted to the outer wall of the roller 707. As the cylinder 701 drives the connecting seat 702 downwards, the L-shaped rod 901 is also driven downwards by the connecting seat 702, causing the push plate 903 to move downwards. This further compresses the air in the air box 902, ejecting it from the air hole 904 to blow away dust from the upper surface of the cover plate, which is then sucked away by the dust collection box 905. During the rotation of the swing rod 705, the swing rod 705 drives the air... The cylinder 1001 makes a circular motion. When the striking rod 1002 presses against the convex ball 1005, the reciprocating spring 1003 is compressed, causing the striking rod 1002 to move away from the convex ball 1005. When the striking rod 1002 leaves the convex ball 1005, under the elastic force of the reciprocating spring 1003, the striking rod 1002 strikes the disc 1004, thereby generating vibration. The vibration is transmitted to the roller 707 through the swing rod 705, causing the dust on the outer wall of the roller 707 to fall down and be sucked away by the dust collection box 905.

[0027] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A panel bonding device for liquid crystal display production, comprising a base plate (1), characterized in that: A support leg (3) is fixed below the base plate (1), an upper frame (2) is fixed above the base plate (1), a placement frame (4) is fixed above the base plate (1), a compression spring (6) is fixed inside the placement frame (4), a pressure plate (5) is fixed at the end of the compression spring (6), a cover closing mechanism (7) is provided above the base plate (1) to facilitate fitting, a heating mechanism (8) is provided above the base plate (1) to improve the fitting effect, and a cleaning mechanism (9) is provided above the base plate (1) to clean the dust from the cover plate. The closing mechanism (7) includes: a cylinder (701), a connecting seat (702), a connecting column (703), a torsion spring (704), a swing rod (705), a rectangular sleeve rod (706), and a roller (707); the cylinder (701) is fixed below the upper frame (2).

2. The panel bonding device for liquid crystal display production according to claim 1, characterized in that: The connecting seat (702) is fixed to the lower end of the cylinder (701), the connecting column (703) is fixed to the inner wall of the connecting seat (702), the swing rod (705) is hinged to the outer wall of the connecting column (703), and one end of the torsion spring (704) is fixed to the inner wall of the connecting seat (702).

3. The panel bonding device for liquid crystal display production according to claim 2, characterized in that: The other end of the torsion spring (704) is fixedly connected to the swing rod (705). The rectangular sleeve rod (706) passes through the swing rod (705) and is fixedly connected at the point of penetration. The roller (707) is rotatably connected to the outer wall of the rectangular sleeve rod (706). After the cylinder (701) is started, the connecting seat (702) moves downward. When the roller (707) contacts the top of the cover plate, the cylinder (701) continues to apply downward force, and the torsion spring (704) is compressed, so that the two rollers (707) move against each other against the upper surface of the cover plate. When the two rollers (707) are 180° apart, the cylinder (701) is controlled to move upward, and the two rollers (707) move towards each other.

4. The panel bonding device for liquid crystal display production according to claim 3, characterized in that: The heating mechanism (8) includes a friction ring (801) and a friction plate (802); the friction ring (801) is fixed on the outer wall of the rectangular sleeve (706), the friction plate (802) is fixed on the inner wall of the roller (707), and the friction plate (802) is in contact with the friction ring (801).

5. The panel bonding device for liquid crystal display production according to claim 4, characterized in that: The cleaning mechanism (9) includes: an L-shaped rod (901), an air box (902), a push plate (903), an air hole (904), a dust collection box (905), and a negative pressure pipe (906); the upper end of the L-shaped rod (901) is fixed to the side wall of the connecting seat (702).

6. The panel bonding device for liquid crystal display production according to claim 5, characterized in that: The air box (902) is fixed above the base plate (1), the L-shaped rod (901) passes through the upper wall of the air box (902) and is slidably connected at the point of penetration, the push plate (903) is fixed at the lower end of the L-shaped rod (901), and the air hole (904) is opened on the side wall of the air box (902).

7. The panel bonding device for liquid crystal display production according to claim 1, characterized in that: The bottom plate (1) is provided with a vibration mechanism (10) for cleaning and closing mechanism (7). The vibration mechanism (10) includes: a hollow cylinder (1001), a striking rod (1002), a reciprocating spring (1003), a disc (1004), and a convex ball (1005); the hollow cylinder (1001) is fixed to the side wall of the swing rod (705).

8. The panel bonding device for liquid crystal display production according to claim 7, characterized in that: One end of the reciprocating spring (1003) is fixed to the bottom of the hollow cylinder (1001), the striking rod (1002) is fixed to the other end of the reciprocating spring (1003), the disc (1004) is fixed to the outer wall of the L-shaped rod (901), and the convex ball (1005) is fixed to the side wall of the disc (1004).

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