Accurate aligning, positioning and laminating mechanism for protective film

Abstract

The utility model discloses an accurate aligning, positioning and attaching mechanism for a protective film, and belongs to the technical field of electronic product attaching. A precise aligning, positioning and laminating mechanism for a protective film comprises a base, clamping blocks symmetrically arranged are slidably mounted on the base, a fine adjustment assembly is mounted in the base, and the precise aligning, positioning and laminating mechanism further comprises an optical projector which is mounted on a fixing support on a production line, located over a mobile phone screen to be laminated and used for projecting a cross curve and assisting precise positioning, a guide frame for adsorbing a film is arranged between the optical projector and the base, the guide frame is driven by an air cylinder to move up and down, the axis of the optical projector coincides with the center line of the guide frame and the center line of a mobile phone, and high-precision alignment between the protective film and a mobile phone screen is achieved by combining the design of the optical projector and the guide frame. Even for a mobile phone screen with a complex shape or a non-standard size, extremely high fitting precision can be ensured, and errors caused by manual operation are reduced.

Description

Technical Field

[0001] This utility model relates to the field of electronic product mounting technology, and in particular to a precise alignment and positioning bonding mechanism for a protective film. Background Technology

[0002] With the rapid development of the smartphone market, consumers' demand for mobile phone screen protectors is also increasing. In factory environments, in order to meet the requirements of large-scale production and high quality, the traditional manual screen protector application method can no longer meet the needs of modern manufacturing. Therefore, automated screen protector application equipment and technology have emerged to improve production efficiency and product quality.

[0003] Currently, there are various types of automated screen protector application equipment and technologies on the market, such as robotic arm screen protector application machines, which use robotic arms to grab the protective film and place it on the mobile phone screen. Although they can achieve a certain degree of automation, there is still room for improvement in alignment accuracy, such as the inability to align the protective film and the mobile phone screen with high precision. Utility Model Content

[0004] The purpose of this invention is to solve the problem of low alignment accuracy between mobile phones and screen protectors in the prior art, such as the inability to align the screen protector with the mobile phone screen with high precision, and to propose a precise alignment, positioning and bonding mechanism for screen protectors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A precise alignment and bonding mechanism for a protective film includes a base on which symmetrically arranged clamping blocks are slidably mounted for securing a mobile phone. A fine-tuning component is installed within the base to control the symmetrical clamping blocks to move closer or further apart. The mechanism also includes an optical projector mounted on a fixed bracket on a production line, positioned directly above the screen of the mobile phone to be bonded, for projecting crosshairs to aid in precise positioning. A guide frame for adsorbing the film is positioned between the optical projector and the base. The guide frame is driven to move up and down by a cylinder, and the axis of the optical projector coincides with the center line of the guide frame and the mobile phone.

[0007] To ensure that users can clearly see the alignment through the crosshairs when the negative pressure rod is in operation, thus improving the accuracy of the screen protector application process, preferably, the guide frame includes a mounting plate and a trapezoidal block fixedly mounted on the mounting plate. A negative pressure rod is slidably mounted inside the mounting plate and the trapezoidal block. A suction cup is fixedly mounted on the end of the negative pressure rod near the mobile phone. The negative pressure rod has a hollow internal structure, and the crosshairs projected by the optical projector pass through the negative pressure rod to the mobile phone.

[0008] To provide elastic cushioning and support, ensure smooth movement of the negative pressure rod, and automatically reset when needed, a first spring is movably mounted on the negative pressure rod. The trapezoidal block has a receiving groove inside to accommodate the first spring, and the two ends of the first spring are respectively fixedly connected to the inner wall of the receiving groove.

[0009] To ensure uniform pressure distribution during bonding and reduce the generation of bubbles and wrinkles, a pressure block is further included. The trapezoidal block has grooves on the inclined surfaces on both sides. The pressure block has a limiting part and is slidably installed in the groove. A pressure roller is rotatably installed on the side of the pressure block near the film.

[0010] To ensure the pressure block can be smoothly reset, thus enhancing the reliability and stability of the equipment, a guide rod is further installed on the limiting part. The guide rod is slidably connected to the mounting plate, and a second spring is movably installed on the guide rod. The two ends of the second spring are fixedly connected to the limiting part and the mounting plate, respectively.

[0011] To precisely control the position of the clamping block and ensure the phone remains stable and accurate during screen protector application, preferably, the fine-tuning component includes a central gear driven to rotate by a motor and racks disposed on both sides of the central gear. The racks on both sides are meshed with the central gear. A partition is provided inside the base, forming a receiving cavity between the partition and the bottom surface of the base to accommodate the central gear and the racks. The clamping block is slidably mounted on the partition, with one end passing through the partition and fixedly connected to the racks.

[0012] To prevent the phone from slipping due to slight vibration or external force during clamping, a plug compatible with the phone's charging port is further fixedly installed on one side of the clamping block.

[0013] Compared with the prior art, this utility model provides a precise alignment and positioning bonding mechanism for a protective film, which has the following beneficial effects:

[0014] 1. The precise alignment and bonding mechanism of this protective film, through the design of combining an optical projector and a guide frame, achieves high-precision alignment between the protective film and the mobile phone screen. Even for mobile phone screens with complex shapes or non-standard sizes, it can ensure extremely high bonding accuracy, reduce errors caused by manual operation, and all operations can be completed on a fixed work platform, simplifying the multiple steps required for traditional screen protector application. It has a high degree of automation, greatly shortens the application time, and improves production efficiency.

[0015] 2. The protective film's precise alignment and bonding mechanism, combined with the cavity design of the negative pressure rod and the optical projector, achieves high-precision alignment between the protective film and the mobile phone screen. This ensures extremely high bonding accuracy whether operated manually or on an automated production line.

[0016] 3. The precise alignment and bonding mechanism of the protective film, along with the design of the pressure block and roller, ensures uniform pressure distribution during the application process. The rotating design of the pressure roller reduces friction while applying pressure, preventing scratches on the protective film surface. This not only improves the quality of the film application but also reduces the generation of bubbles and wrinkles. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a precise alignment and positioning bonding mechanism for a protective film proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the base structure of a precise alignment and positioning bonding mechanism for a protective film proposed in this utility model.

[0019] Figure 3 This is an exploded view of the guide frame structure of a precise alignment and positioning bonding mechanism for a protective film proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the guide frame of the protective film precision alignment and positioning bonding mechanism proposed in this utility model.

[0021] In the diagram: 1. Base; 2. Clamping block; 3. Fine-tuning component; 301. Central gear; 302. Rack; 303. Plug; 4. Optical projector; 5. Guide frame; 501. Mounting plate; 502. Trapezoidal block; 503. Negative pressure rod; 504. Suction cup; 505. First spring; 506. Receiving groove; 507. Pressure block; 508. Slide groove; 509. Limiting part; 510. Pressure roller; 511. Guide rod; 512. Second spring; 6. Partition plate. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Example:

[0025] Reference Figures 1-4 A precise alignment and bonding mechanism for a protective film includes a base 1, on which symmetrically arranged clamping blocks 2 are slidably mounted, allowing adjustment according to the size of the mobile phone to ensure compatibility with different mobile phone models and to fix the mobile phone. A fine-tuning component 3 is installed inside the base 1 to control the symmetrical clamping blocks 2 to move closer or further apart, thereby achieving precise clamping and release of the mobile phone. It also includes an optical projector 4, mounted on a fixed bracket on the production line, located directly above the screen of the mobile phone to be bonded, for projecting crosshairs to assist in precise positioning. A guide frame 5 for adsorbing the film is provided between the optical projector 4 and the base 1. The guide frame 5 is driven up and down by a cylinder. The axis of the optical projector 4 coincides with the center line of the guide frame 5 and the mobile phone, ensuring that the projected crosshairs accurately cover the mobile phone screen, providing a precise reference point for subsequent protective film bonding.

[0026] When applying the screen protector, first place the phone on the base 1. The clamping block 2, aided by the fine-tuning component 3, slides along the surface of the base 1 to accommodate phones of different sizes, and through precise adjustment, firmly secures the phone in place. This ensures the phone's position remains unchanged throughout the application process. The optical projector 4 is mounted on a fixed bracket on the production line, positioned directly above the phone screen to be covered. The optical projector 4 projects clear crosshairs or other graphics, which are directly mapped onto the phone screen, providing an intuitive visual reference for subsequent operations. The guide frame 5, located between the optical projector 4 and the base 1, is driven by a cylinder to move up and down. It not only provides support but also has a built-in negative pressure adsorption system, which can accurately adsorb and position the protective film onto the phone screen during application. Because the center lines of the optical projector 4, guide frame 5, and the phone are aligned, the alignment accuracy between the protective film and the phone screen can be effectively guaranteed. When the guide frame 5 descends to the appropriate position, the suction cup 504 on the negative pressure rod 503 will firmly adsorb the protective film. At this time, the operator can adjust the protective film according to the crosshairs provided by the optical projector 4. The guide 5 is positioned until perfectly aligned. Then, the guide 5 slowly descends while gradually releasing the protective film, allowing it to smoothly adhere to the phone screen. Throughout the process, the optical projector 4 continuously projects crosshairs to ensure the accuracy of the fit. After the fit is complete, the guide 5 is lifted by a cylinder and detached from the phone screen. The operator or automated system checks the fit to ensure there are no bubbles or wrinkles. If everything is normal, the clamping block 2 is released, and the phone with the protective film applied is removed. By combining the design of the optical projector 4 and the guide 5, high-precision alignment between the protective film and the phone screen is achieved. Even for phone screens with complex shapes or non-standard sizes, extremely high fitting accuracy can be guaranteed, reducing errors caused by manual operation.

[0027] The guide frame 5 is one of the key components in the precise alignment and positioning mechanism for the protective film. It includes a mounting plate 501, which serves as the basic structure of the guide frame 5, providing support and a mounting platform, and a trapezoidal block 502 fixedly mounted on the mounting plate 501. A negative pressure rod 503 is slidably mounted inside the mounting plate 501 and the trapezoidal block 502. A suction cup 504 is fixedly mounted on the end of the negative pressure rod 503 near the mobile phone. The negative pressure rod 503 has a hollow internal structure. The crosshairs projected by the optical projector 4 pass through the negative pressure rod 503 to the mobile phone. This allows the user to clearly see the alignment through the crosshairs even when the negative pressure rod 503 is in operation, thus improving the accuracy of the film application process.

[0028] Once the guide frame 5 descends to the appropriate position, the vacuum pump connected to the negative pressure rod 503 starts, generating negative pressure that causes the suction cup 504 to firmly adhere to the protective film. At this point, the operator can adjust the position of the protective film according to the crosshairs provided by the optical projector 4 until it is perfectly aligned. The crosshairs projected by the optical projector 4 pass through the negative pressure rod 503 and are directly mapped onto the mobile phone screen, providing an intuitive visual reference. The operator can easily align the protective film with the edge or specific markings of the mobile phone screen to ensure high-precision bonding. Through the cavity design of the negative pressure rod 503 and the combination with the optical projector 4, high-precision alignment between the protective film and the mobile phone screen is achieved, ensuring extremely high bonding accuracy whether in manual operation or on an automated production line.

[0029] A first spring 505 is movably mounted on the negative pressure rod 503. The trapezoidal block 502 has a receiving groove 506 inside to accommodate the first spring 505. The two ends of the first spring 505 are fixedly connected to the inner wall of the receiving groove 506 to provide elastic buffering and support, ensuring that the negative pressure rod 503 can move smoothly and automatically reset when needed.

[0030] The guide frame 5 also includes a pressure block 507. The inclined surfaces on both sides of the trapezoidal block 502 have grooves 508. The pressure block 507 has a limiting part 509 and is slidably installed in the groove 508. A pressure roller 510 is rotatably installed on the side of the pressure block 507 near the diaphragm.

[0031] When the negative pressure rod 503 is subjected to external pressure or movement, the first spring 505 provides elastic cushioning to prevent the negative pressure rod 503 from being damaged or losing alignment due to sudden movement. At the same time, when there is no external force, the first spring 505 can help the negative pressure rod 503 automatically reset, ensuring that it returns to the initial position every time it is operated, thus improving the stability and reliability of the equipment. During the film application process, as the guide frame 5 descends, the suction cup 504 at the end of the negative pressure rod 503 will first contact the mobile phone, and the first spring 505 will be compressed. Then, the pressure block 507 will slide in the slide groove 508. Due to the action of the inclined surface of the trapezoidal block 502, the pressure block 507 will be forced to move outward, causing the pressure roller 510 to gently press the protective film onto the mobile phone and ensure that the pressure distribution is uniform during the application process. The rotation design of the pressure roller 510 allows it to reduce friction while applying pressure, avoiding scratching the surface of the protective film. This not only improves the quality of the film application but also reduces the generation of bubbles and wrinkles.

[0032] A guide rod 511 is installed on the limiting part 509. The guide rod 511 is slidably connected to the mounting plate 501. A second spring 512 is movably installed on the guide rod 511. The two ends of the second spring 512 are fixedly connected to the limiting part 509 and the mounting plate 501, respectively.

[0033] The guide rod 511 is mounted on the limiting part 509 and slidably connected to the mounting plate 501 to ensure that the pressure block 507 moves along the predetermined path and avoids deviating from the track. The second spring 512 is movably mounted on the guide rod 511, and its two ends are fixedly connected to the limiting part 509 and the mounting plate 501 respectively. The second spring 512 provides additional elastic support to ensure that the pressure block 507 can be smoothly reset, thereby enhancing the reliability and stability of the equipment.

[0034] The fine-tuning component 3 is one of the key components in the protective film precise alignment and positioning bonding mechanism. It is responsible for precisely controlling the position of the clamping block 2 to ensure that the mobile phone remains stable and accurate during the film application process. The fine-tuning component 3 includes a central gear 301 driven by a motor to rotate and racks 302 set on both sides of the central gear 301. The racks 302 on both sides are meshed with the central gear 301. A partition 6 is provided in the base 1, and a receiving cavity is formed between the partition 6 and the bottom surface of the base 1 to accommodate the central gear 301 and the racks 302. The clamping block 2 is slidably mounted on the partition 6, and one end of the clamping block 2 passes through the partition 6 and is fixedly connected to the rack 302.

[0035] It should be noted that the partition 6 is provided with a guide groove to guide the sliding of the clamping block 2.

[0036] When the position of the clamping block 2 needs to be adjusted, the motor starts and drives the central gear 301 to rotate. Since the central gear 301 is meshed with the racks 302 on both sides, the rotation of the gear will drive the racks 302 on both sides to move in opposite directions. The movement of the racks 302 on both sides is fixedly connected to the clamping block 2, so that the two clamping blocks 2 can move closer or further away synchronously. This design ensures that the movement of the clamping block 2 is smooth and precise, can adapt to mobile phones of different sizes, and firmly fix the mobile phone.

[0037] A plug 303, which is compatible with the mobile phone charging port, is fixedly installed on one side of the clamping block 2.

[0038] During the process of fixing the phone with clamping block 2, plug 303 is inserted into the phone's charging port, providing an additional fixing point to ensure that the phone will not shift or rotate during the screen protector application process. This not only enhances the phone's fixing effect but also prevents the phone from sliding due to slight vibration or external force during clamping, further improving the accuracy and quality of screen protector application.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A precise alignment and positioning bonding mechanism for a protective film, comprising a base (1), wherein symmetrically arranged clamping blocks (2) are slidably mounted on the base (1) for fixing a mobile phone, characterized in that, The base (1) contains a fine-tuning component (3) for controlling the symmetrical clamping blocks (2) to move closer or further apart. It also includes an optical projector (4), mounted on a fixed bracket on the production line, positioned directly above the mobile phone screen to be bonded, used to project crosshairs to assist in precise positioning. Among them, an adsorption film guide frame (5) is provided between the optical projector (4) and the base (1). The guide frame (5) is driven to move up and down by a cylinder. The axis of the optical projector (4) coincides with the center line of the guide frame (5) and the mobile phone.

2. The precise alignment and positioning bonding mechanism for a protective film according to claim 1, characterized in that, The guide frame (5) includes a mounting plate (501), and A trapezoidal block (502) is fixedly installed on the mounting plate (501). A negative pressure rod (503) is slidably installed inside the mounting plate (501) and the trapezoidal block (502). A suction cup (504) is fixedly installed at one end of the negative pressure rod (503) near the mobile phone. The negative pressure rod (503) has a hollow structure inside, and the cross line projected by the optical projector (4) passes through the negative pressure rod (503) to the mobile phone.

3. The precise alignment and positioning bonding mechanism for a protective film according to claim 2, characterized in that, A first spring (505) is movably mounted on the negative pressure rod (503). The trapezoidal block (502) has a receiving groove (506) inside to accommodate the first spring (505). The two ends of the first spring (505) are respectively fixedly connected to the inner wall of the receiving groove (506).

4. The precise alignment and positioning bonding mechanism for a protective film according to claim 3, characterized in that, It also includes a pressure block (507), on which there are grooves (508) on the inclined surfaces on both sides of the trapezoidal block (502). The pressure block (507) has a limiting part (509) and is slidably installed in the groove (508). A pressure roller (510) is rotatably installed on the side of the pressure block (507) near the diaphragm.

5. The precise alignment and positioning bonding mechanism for a protective film according to claim 4, characterized in that, A guide rod (511) is installed on the limiting part (509). The guide rod (511) is slidably connected to the mounting plate (501). A second spring (512) is movably installed on the guide rod (511). The two ends of the second spring (512) are fixedly connected to the limiting part (509) and the mounting plate (501) respectively.

6. The precise alignment and positioning bonding mechanism for a protective film according to claim 1, characterized in that, The fine-tuning component (3) includes a central gear (301) driven to rotate by a motor and Racks (302) are disposed on both sides of the central gear (301), and the racks (302) on both sides are meshed with the central gear (301). The base (1) is provided with a partition (6), which forms a receiving cavity between the partition (6) and the bottom surface of the base (1) for accommodating the central gear (301) and the rack (302). The clamping block (2) is slidably installed on the partition (6), and one end of the clamping block passes through the partition (6) and is fixedly connected to the rack (302).

7. The precise alignment and positioning bonding mechanism for a protective film according to claim 6, characterized in that, A plug (303) adapted to the mobile phone charging port is fixedly installed on the clamping block (2) on one side.

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