A mobile phone screen multi-layer glass bonding device

Abstract

The utility model relates to mobile phone screen pasting technical field, especially mobile phone screen multilayer glass pasting equipment, including the chassis, be provided with mobile structure on the chassis, be equipped with the adjusting structure on mobile structure, this mobile phone screen multilayer glass pasting equipment is through the adjusting structure of setting, multiaxis linkage's precision motion control system has realized the accurate cooperation control of space orientation and attitude adjustment of adsorbed glass, adopts the linear motion module of electric push rod and screw rod transmission combination, has guaranteed the stability and positioning accuracy of glass pickup and removal process, has innovatedly introduced worm wheel and worm drive mechanism as the rotation adjusting unit, has realized the accurate adjustment and stable keeping of glass angle in any position by its self -locking characteristic and the advantage of no reverse clearance, has eliminated the return error and vibration deviation of traditional rotation mechanism.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone screen bonding technology, and in particular to a multi-layer glass bonding device for mobile phone screens. Background Technology

[0002] A smartphone is a type of mobile phone that, like a personal computer, has its own operating system and independent running space. Users can install software, games, navigation, and other programs provided by third-party service providers, and can access wireless networks through mobile communication networks. The screens used in smartphones need to be laminated with glass during the manufacturing process.

[0003] A glass bonding device for mobile phone screen production, with utility model publication number CN221836259U, is disclosed. Specifically, it includes a main board and a placement plate disposed on the top outer wall of the main board. The top outer wall of the main board has two sliding grooves, each containing a sliding plate. A horizontal plate is fixedly installed between the top outer walls of the two sliding plates. A placement platform is fixedly installed on the top outer wall of the main board. A rotating rod is rotatably mounted on the inner circumference of the horizontal plate. In use, the screen to be processed is placed on the placement plate, and the glass to be bonded is placed on the placement platform. After the screen is fixedly clamped by a clamping mechanism, a first motor is started to drive a suction cup to slide above the glass. Then, a hydraulic cylinder is activated to lift the glass. By controlling the first and second motors, the front-to-back position and rotation angle of the glass can be precisely adjusted, improving its adjustability and positioning accuracy.

[0004] The aforementioned patent also has the following problems: it uses a gear pair as the core transmission mechanism. At the moment of motor start-up and shutdown, due to the sudden change in output torque, a significant rigid impact will be formed. This impact load is directly transmitted to the entire rotating load through the gear pair. Due to inertia, the system load tends to maintain its original motion state, which is in opposition to the instantaneous force rectangle at the drive end, thereby inducing torsional vibration in the transmission chain. This high-frequency instantaneous torsional vibration can easily overcome the static friction of the suction cup clamp, causing micro-slippage or circumferential deflection between the glass and the suction cup contact surface. This slippage phenomenon will reduce the alignment accuracy during the bonding process and affect the yield of finished products. Utility Model Content

[0005] The purpose of this invention is to provide a multi-layer glass bonding device for mobile phone screens, in order to solve the problem mentioned in the background art that, in the existing transmission mechanism with gear pairs as the core, a significant rigid impact is generated at the moment of motor start-up and shutdown due to the sudden change in output torque. This impact load is directly transmitted to the entire rotating load through the gear pair. Due to inertia, the system load tends to maintain its original motion state, which is in opposition to the instantaneous force at the drive end, thereby inducing torsional vibration in the transmission chain. This high-frequency instantaneous torsional vibration can easily overcome the static friction of the suction cup clamp, resulting in micro-slippage or circumferential deflection between the glass and the suction cup contact surface. This slippage phenomenon will reduce the alignment accuracy during the bonding process and affect the yield of finished products.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-layer glass bonding device for mobile phone screens, comprising a base frame, a movable structure provided on the base frame, and an adjustment structure provided on the movable structure; The adjustment structure includes a connecting frame, a rotating shaft movably mounted on the connecting frame, a rotating plate mounted on the rotating shaft, a fixed frame mounted on the rotating plate, a guide rod movably mounted on the fixed frame, a movable plate mounted on the guide rod, a vacuum suction cup mounted on the movable plate, an electric push rod mounted on the fixed frame with its driving end connected to the movable plate, a worm gear movably mounted on the rotating shaft, a worm movably mounted on the connecting frame with the worm gear meshing with the worm gear, and a first motor mounted on the connecting frame with its driving end connected to the worm.

[0007] Preferably, the rotating plate is provided with auxiliary wheels, and the connecting frame is provided with reinforcing ribs.

[0008] Preferably, the base frame is provided with support legs, and the first motor is fixed to the connecting frame by bolts.

[0009] Preferably, the movable structure includes a fixed rod mounted on the base frame, a sliding block movably mounted on the fixed rod, a sliding plate mounted on the sliding block, a sliding frame mounted on the sliding plate, a lead screw movably mounted on the base frame, a transmission block movably mounted on the lead screw and connected to the sliding plate, and a second motor mounted on the base frame with its drive end connected to the lead screw.

[0010] Preferably, the sliding block is adapted to the fixed rod, and the electric push rod is fixed to the fixed frame by bolts.

[0011] Preferably, the guide rods are provided in pairs, and the second motor is fixed to the base frame by bolts.

[0012] Preferably, the rotating shaft is adapted to the connecting frame, and the sliding frame is provided with reinforcing ribs.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This multi-layer glass bonding device for mobile phone screens, through its adjustable structure and multi-axis linkage precision motion control system, achieves precise and coordinated control of the spatial positioning and attitude adjustment of the adsorbed glass. The linear motion module, combining electric push rods and lead screw drives, ensures the stability and positioning accuracy of the glass picking and transferring process. It innovatively introduces a worm gear transmission mechanism as a rotation adjustment unit, leveraging its self-locking characteristics and zero backlash to achieve precise adjustment and stable maintenance of the glass angle at any position, eliminating the backlash error and vibration offset present in traditional rotating mechanisms. Finally, the constant pressure bonding process achieved through the electrically controlled push rod ensures uniform pressure distribution on the contact surface while effectively preventing the generation of bubbles and stress concentration. This ensures the integrity and optical performance of the glass-screen bonding interface at the microscopic level, significantly improving product yield and long-term reliability.

[0014] 2. This multi-layer glass bonding equipment for mobile phone screens, through a designed moving structure and a precision positioning system with a lead screw drive as its core, achieves high-precision and high-stability positioning and movement of the vacuum suction cup in three-dimensional space. The lead screw drive mechanism has excellent positioning accuracy and repeatability, accurately converting the rotational motion of the motor into a smooth linear feed of the sliding plate, ensuring that the vacuum suction cup can be accurately moved directly above the glass. At the same time, the transmission system effectively suppresses vibration and offset during the movement through the precise cooperation of the sliding block and the fixed rod, fundamentally eliminating poor bonding caused by positioning deviation. Thus, at the microscopic scale, it ensures the uniformity and consistency of the bonding interface between the mobile phone screen and the glass, significantly improving the product assembly yield and bonding quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another perspective; Figure 3 This is a schematic diagram of the structure of the rotating plate and auxiliary wheel of this utility model. Figure 4 This is a schematic diagram of the fitting structure of the fixing frame and guide rod of this utility model; In the diagram: 1. Base frame; 2. Adjustment structure; 201. Connecting frame; 202. Rotating shaft; 203. Rotating plate; 204. Auxiliary wheel; 205. Fixed frame; 206. Guide rod; 207. Moving plate; 208. Electric push rod; 209. Vacuum suction cup; 210. First motor; 211. Worm gear; 212. Worm; 3. Moving structure; 301. Fixed rod; 302. Sliding block; 303. Sliding plate; 304. Sliding frame; 305. Lead screw; 306. Transmission block; 307. Second motor. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This utility model provides a technical solution: a multi-layer glass bonding device for mobile phone screens, including a base frame 1, a movable structure 3 on the base frame 1, and an adjustment structure 2 on the movable structure 3; The adjustment structure 2 includes a connecting frame 201, a rotating shaft 202 movably mounted on the connecting frame 201, a rotating plate 203 mounted on the rotating shaft 202, a fixed frame 205 mounted on the rotating plate 203, a guide rod 206 movably mounted on the fixed frame 205, a movable plate 207 mounted on the guide rod 206, a vacuum suction cup 209 mounted on the movable plate 207, an electric push rod 208 mounted on the fixed frame 205 with its driving end connected to the movable plate 207, a worm gear 211 movably mounted on the rotating shaft 202, and a worm 212 movably mounted on the connecting frame 201, with the worm 212 meshing with the worm gear 211. The connecting frame 201 is equipped with a first electric... The motor 210 is connected to the worm gear 212, driving the electric push rod 208. The electric push rod 208 can move the moving plate 207. When the moving plate 207 moves, it can move the guide rod 206 on the fixed frame 205. The moving plate 207 can move the vacuum suction cup 209 to adsorb the glass. When it is necessary to adjust the angle of the adsorbed glass for better adhesion, the first motor 210 is driven. The first motor 210 can drive the worm gear 212 to rotate. The worm wheel 211 drives the rotating shaft 202 to rotate under the action of the worm gear 212. The rotating shaft 202 can drive the rotating plate 203 to rotate. The rotating plate 203 can drive the glass on the vacuum suction cup 209 to rotate. There is no deviation during rotation.

[0018] Furthermore, the rotating plate 203 is equipped with three auxiliary wheels 204, which are circumferentially spaced on the rotating plate 203. These three circumferentially spaced auxiliary wheels 204 form a stable rolling contact with the connecting frame 201. This symmetrical arrangement of the auxiliary wheels 204 system can evenly transfer the radial load borne by the rotating plate 203 to the connecting frame 201, effectively distributing the load pressure on the bearings. Each auxiliary wheel 204 adopts a high-precision bearing structure, ensuring extremely low friction coefficient and operating noise during rotation. This design significantly improves the performance of the rotating system. The smooth movement under dynamic working conditions is further enhanced by multi-point support, which effectively suppresses radial runout and axial movement that may occur when the rotating rod is running at high speed, providing a reliable positioning reference for precision operations. The connecting frame 201 is equipped with reinforcing ribs, which are manufactured in an integrated manner with the main body of the connecting frame 201 to form a complete load-bearing frame. This can effectively resist bending moments and torsional loads generated under complex working conditions. This reinforced structure significantly improves the overall natural frequency of the connecting frame 201, effectively suppresses resonance phenomena during equipment operation, and provides a stable and reliable installation foundation for the entire rotating system.

[0019] Furthermore, the base frame 1 is equipped with support legs made of high-damping composite material and adopts a three-point or four-point support configuration based on the principle of statics. While effectively lowering the overall center of gravity of the equipment, the anti-slip texture on the bottom significantly enhances the static friction between the support legs and the contact surface. This design can not only effectively suppress the slight displacement caused by vibration during operation, but also adaptively adjust to compensate for slight unevenness of the placement surface, thereby establishing a solid and stable working foundation for the entire equipment and ensuring that the high-precision operation process is not affected by external interference. The first motor 210 is fixed to the connecting frame 201 by bolts. This connection method not only ensures precise alignment between the motor output shaft and the transmission system, but also realizes the modular packaging of the power unit. This allows technicians to quickly disassemble and replace the entire motor module during equipment maintenance or upgrades, greatly improving the maintainability and overall efficiency of the equipment.

[0020] Furthermore, the movable structure 3 includes a fixed rod 301 mounted on the base frame 1. A sliding block 302 is movably mounted on the fixed rod 301. A sliding plate 303 is mounted on the sliding block 302. A sliding frame 304 is mounted on the sliding plate 303. A lead screw 305 is movably mounted on the base frame 1. A transmission block 306 is movably mounted on the lead screw 305 and connected to the sliding plate 303. A second motor 30 is mounted on the base frame 1. 7. The second motor 307 is connected to the lead screw 305. A pair of fixed rods 301 and sliding blocks 302 are provided and symmetrically arranged on the base frame 1. When it is necessary to move the glass to fit the mobile phone, the second motor 307 is driven. The second motor 307 can drive the lead screw 305 to rotate. Under the action of the lead screw 305, the transmission block 306 drives the sliding plate 303 to move on the fixed rod 301 through the sliding block 302. The sliding plate 303 can drive the glass on the sliding frame 304 to move.

[0021] Furthermore, the sliding block 302 is adapted to the fixed rod 301, and their mating surfaces are treated with a combination of hard anodizing and ultra-precision grinding to form a low-friction motion interface with excellent wear resistance. The self-lubricating bearing embedded in the sliding block 302 and the fixed rod 301 constitute a stable linear guiding system. The precise preload adjustment mechanism effectively eliminates motion gaps, ensuring that the moving parts maintain stable linear motion without shaking throughout the entire range, providing the actuator with extremely high positioning accuracy and dynamic stability. The electric push rod 208 is fixed to the fixed frame 205 by bolts. Its mounting surface is precision milled to ensure sufficient flatness and perpendicularity. The bolt group is symmetrically arranged according to the principle of uniform load distribution and adopts an anti-loosening design. This connection scheme ensures that the output axis of the push rod is strictly aligned with the actuator while realizing the rapid disassembly and maintenance of the drive unit, significantly improving the maintainability and overall efficiency of the equipment.

[0022] Furthermore, the guide rods 206 are provided in pairs, forming a double linear guide rail system. This symmetrical layout can effectively constrain all unexpected degrees of freedom of the moving parts during the movement process, ensuring that the moving plate 207 maintains a stable straight trajectory throughout the entire range. The surface of the guide rods 206 is treated with hard anodizing and precision grinding, and the low-friction pair formed by the self-lubricating bearing sleeve not only significantly improves the smoothness of the movement, but also effectively suppresses the vibration and offset phenomena commonly seen in high-speed reciprocating motion, providing a reliable positioning reference for the actuator. The second motor 307 is fixed to the base frame 1 by bolts. This connection scheme makes the motor an independent unit that can be quickly disassembled and assembled, greatly simplifying the maintenance process, significantly shortening equipment downtime, and improving the overall utilization and maintainability of the production system.

[0023] Furthermore, the rotating shaft 202 is adapted to the connecting frame 201, and a self-lubricating copper bushing is embedded in the bearing seat of the connecting frame 201 as a bushing. This design not only significantly reduces the friction coefficient and operating noise during rotation, but also effectively suppresses the potential radial and axial movement of the rotating shaft 202 through the double-end support structure, thereby providing the entire transmission system with extremely high motion stability and dynamic accuracy. The sliding frame 304 is provided with reinforcing ribs, and a network of reinforcing ribs calculated by topology optimization is scientifically arranged at the connection between its main load-bearing panel and side wall. These ribs with trapezoidal cross sections are distributed in a cross-network form in the stress concentration area of ​​the structure. By increasing the moment of inertia of the cross section, the bending and torsional stiffness of the overall structure is significantly enhanced. This reinforcement system can effectively disperse and transmit the periodic stress caused by the motion load, thereby suppressing the resonance phenomenon and ensuring that the sliding frame 304 maintains the stability of geometric accuracy in long-term high-frequency reciprocating motion.

[0024] Working principle: When bonding a mobile phone screen, the phone and glass are placed on the base 1. The second motor 307 is driven, which drives the lead screw 305 to rotate. Under the action of the lead screw 305, the transmission block 306 drives the sliding plate 303 to move on the fixed rod 301 via the sliding block 302. The sliding plate 303 can drive the sliding frame 304 to move. When the vacuum suction cup 209 moves above the glass, it stops and drives the electric push rod 208. The electric push rod 208 can drive the moving plate 207 to move. When the moving plate 207 moves, it can drive the guide rod 206 to move on the fixed frame 205. The moving plate 207 can drive the guide rod 206 to move on the fixed frame 205. The moving vacuum suction cup 209 moves to adsorb the glass, and then drives the second motor 307 again, causing the sliding frame 304 to move the glass to the top of the mobile phone screen. When it is necessary to adjust the angle of the adsorbed glass for better adhesion, the first motor 210 is driven. The first motor 210 can drive the worm gear 212 to rotate. The worm wheel 211 drives the rotating shaft 202 to rotate under the action of the worm gear 212. The rotating shaft 202 can drive the rotating plate 203 to rotate. The rotating plate 203 can drive the glass on the vacuum suction cup 209 to rotate without deviation. Then, the electric push rod 208 is driven to move the glass to fit the mobile phone screen.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-layer glass bonding device for mobile phone screens, comprising a base frame (1), characterized in that: The base frame (1) is provided with a movable structure (3), and the movable structure (3) is provided with an adjustment structure (2). The adjustment structure (2) includes a connecting frame (201), on which a rotating shaft (202) is movably mounted. A rotating plate (203) is mounted on the rotating shaft (202). A fixed frame (205) is mounted on the rotating plate (203). A guide rod (206) is movably mounted on the fixed frame (205). A movable plate (207) is mounted on the guide rod (206). A vacuum suction cup (209) is mounted on the movable plate (207). The fixed frame (205)... An electric push rod (208) is provided on the 205, and the driving end of the electric push rod (208) is connected to the moving plate (207). A worm wheel (211) is movably provided on the rotating shaft (202). A worm (212) is movably provided on the connecting frame (201), and the worm (212) meshes with the worm wheel (211). A first motor (210) is provided on the connecting frame (201), and the driving end of the first motor (210) is connected to the worm (212).

2. The multi-layer glass bonding device for mobile phone screens according to claim 1, characterized in that: The rotating plate (203) is provided with auxiliary wheels (204), and the connecting frame (201) is provided with reinforcing ribs.

3. The multi-layer glass bonding device for mobile phone screens according to claim 1, characterized in that: The base frame (1) is provided with support legs, and the first motor (210) is fixed to the connecting frame (201) by bolts.

4. The multi-layer glass bonding device for mobile phone screens according to claim 1, characterized in that: The movable structure (3) includes a fixed rod (301), which is mounted on the base frame (1). A sliding block (302) is movably provided on the fixed rod (301). A sliding plate (303) is provided on the sliding block (302). A sliding frame (304) is provided on the sliding plate (303). A lead screw (305) is movably provided on the base frame (1). A transmission block (306) is movably provided on the lead screw (305) and the transmission block (306) is connected to the sliding plate (303). A second motor (307) is provided on the base frame (1) and the driving end of the second motor (307) is connected to the lead screw (305).

5. The multi-layer glass bonding device for mobile phone screens according to claim 4, characterized in that: The sliding block (302) is adapted to the fixed rod (301), and the electric push rod (208) is fixed to the fixed frame (205) by bolts.

6. The multi-layer glass bonding device for mobile phone screens according to claim 4, characterized in that: The guide rods (206) are provided in pairs, and the second motor (307) is fixed to the base frame (1) by bolts.

7. A multi-layer glass bonding device for mobile phone screens according to claim 4, characterized in that: The rotating shaft (202) is adapted to the connecting frame (201), and the sliding frame (304) is provided with reinforcing ribs.

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