Multi-station positioning clamp for lamination of brightness enhancement film

Abstract

The utility model relates to the technical field of fixture, especially for a kind of multi-station positioning fixture of light-increasing sheet attachment, including machine table component, linear motor module and film pasting head, fixed frame is installed on machine table component upper end, fixed frame inboard is fixedly connected with clamping and fixing component, film pasting head front end is fixedly connected with permanent magnet block, clamping and fixing component includes zigzag cylinder, the position fixedly connected with round sheet of zigzag cylinder near lower end, the position fixedly connected with rubber duckbill valve of zigzag cylinder near left end, flow restriction hole is set in rubber duckbill valve inboard, the position fixedly connected with compression spring of zigzag cylinder near left end, compression spring right end is fixedly connected with permanent magnet magnetic column, the inboard sliding of zigzag cylinder has column block, the inboard sliding of round sheet has pressing rod, in the utility model, the clamping and positioning mechanism of device can stably fix light-increasing sheet, prevent displacement, improve film pasting precision and quality, gradually release mechanism can also ensure that film pasting is smooth, improve pass rate and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically a multi-station positioning fixture for bonding brightening sheets. Background Technology

[0002] Brightness enhancer is an optical thin film material commonly used in display devices such as LCD monitors. Through special optical design and coating technology, it can improve the brightness and contrast of the display, thereby enhancing the display effect. Brightness enhancer can redirect some reflected light back to the observer, reducing light scattering and loss, thus enhancing the clarity and color performance of the picture. This material plays an important role in modern display technology and is widely used in devices such as televisions, computer monitors, and mobile phone screens to improve the visual experience. The bonding of brightness enhancement films requires the use of positioning fixtures, mainly because the bonding process of brightness enhancement films requires extremely high positional accuracy. If the position is not accurate, it may lead to problems such as misalignment, air bubbles or wrinkles between the brightness enhancement film and the substrate, thereby affecting the display effect and optical performance. Positioning fixtures can accurately fix the brightness enhancement film in the predetermined position, ensuring the stability and consistency of the bonding process, and improving production efficiency and product quality. In existing brightness enhancement film lamination technology, suction cups are typically used to fix the brightness enhancement film. The suction cups use vacuum pressure to firmly adhere the brightness enhancement film to the lamination equipment, thus ensuring the smooth progress of the lamination process. However, in actual operation, although the suction cups can provide a certain degree of fixation, in some cases, this suction force may not be sufficient to completely prevent the brightness enhancement film from shifting. For example, when the lamination equipment vibrates during operation, or when the operator accidentally touches the brightness enhancement film during operation, the brightness enhancement film may move slightly from its predetermined position. This displacement can easily lead to problems such as bubbles, wrinkles, or inaccurate alignment during the lamination process, thereby reducing the overall quality of the lamination. Therefore, a multi-station positioning fixture for brightness enhancement film lamination is proposed to address the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a multi-station positioning fixture for bonding brightening films, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A multi-station positioning fixture for bonding brightening films includes a machine base assembly, a linear motor module, and a film-applying head. A fixed frame is mounted on the upper end of the machine base assembly, and a clamping assembly is fixedly connected to the inner side of the fixed frame. A permanent magnet block is fixedly connected to the front end of the film-applying head. The clamping assembly includes a folded cylinder, a circular plate is fixedly connected to the lower end of the folded cylinder, a rubber duckbill valve is fixedly connected to the left end of the folded cylinder, a flow-limiting orifice is formed on the inner side of the rubber duckbill valve, a compression spring is fixedly connected to the left end of the folded cylinder, a permanent magnet column is fixedly connected to the right end of the compression spring, a column block slides inside the folded cylinder, a pressure rod slides inside the circular plate, and a rubber wheel is rotatably connected to the lower end of the folded cylinder.

[0005] As a further optimization of this utility model, the machine tool assembly includes a base, a servo motor is fixedly connected to the inner side of the base, a negative pressure worktable is fixedly connected to the end of the servo motor spindle, a movable plate is fixedly connected to the top of the negative pressure worktable through multiple spring telescopic rods, and the outer side of the movable plate is fixedly connected to a fixed frame.

[0006] As a further optimization of this utility model, a negative pressure worktable is fixedly connected to the outside of the servo motor spindle, a gap is provided between the negative pressure worktable and the movable disk, a number of micro-holes are opened on the inner side of the negative pressure worktable, and a vacuum pump is fixedly connected to the lower end of the negative pressure worktable near the micro-holes.

[0007] As a further optimization of this utility model, the top of the base is fixedly connected to the linear motor module, the lower end of the linear motor module is fixedly connected to the film-applying head, and the permanent magnet block and the permanent magnet column are magnetically repelled.

[0008] As a further optimization of this utility model, the fixing frame includes a fixing base, a crossbeam and a blocking plate are fixedly connected to the front end of the fixing base, a rotating hole is opened on the inner side of the crossbeam, a spring is fixedly connected to the inner side of the rotating hole of the crossbeam, the inner side of the spring is fixedly connected to the outer side of the shaft column, and the shaft column is rotatably connected to the inner side of the rotating hole of the crossbeam.

[0009] As a further optimization of this utility model, a rotating arm is fixedly connected to the outer side of the shaft column, the rotating arm is in contact with the baffle plate, a groove is provided at one end of the rotating arm, a mounting hole is provided on the inner side of the rotating arm, and the rotating arm is fixedly connected to the outer side of the folded cylinder through the mounting hole.

[0010] As a further optimization of this utility model, the permanent magnet column and the column block are both fixedly connected to the outer side with rubber sealing rings, and the permanent magnet column and the column block are sealed to the inner side of the folded cylinder through the rubber sealing rings.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the device, through the setting of a fixing frame and clamping components, and the setting of a clamping and positioning mechanism, can achieve stable fixation of the brightness enhancement film before it is applied, effectively preventing the displacement of the brightness enhancement film caused by external forces, thereby significantly improving the accuracy and quality of the application. At the same time, this clamping and positioning mechanism can be gradually released during the application process, ensuring the smooth progress of the application process, further improving the pass rate of the brightness enhancement film application, and enhancing production efficiency and product quality stability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded structural diagram of the entire utility model; Figure 3 This is a schematic diagram of the fixing frame structure of this utility model; Figure 4 This is a schematic diagram of the spring structure of this utility model; Figure 5 This is a cross-sectional structural diagram of the clamping assembly of this utility model; Figure 6 This is an exploded structural diagram of the clamping assembly of this utility model; Figure 7 This utility model Figure 6 A schematic diagram of the structure at point A.

[0013] In the diagram: 1. Machine assembly; 11. Base; 12. Servo motor; 13. Movable plate; 14. Negative pressure worktable; 2. Linear motor module; 3. Film applicator; 4. Fixing frame; 41. Fixing base; 42. Cross frame; 43. Clock spring; 44. Blocking plate; 45. Shaft column; 46. Swing arm; 47. Slope; 5. Clamping assembly; 51. Folded cylinder; 52. Circular plate; 53. Rubber duckbill valve; 54. Flow limiting orifice; 55. Compression spring; 56. Permanent magnet column; 57. Column block; 58. Pressure rod; 59. Rubber wheel; 6. Permanent magnet block. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-7 This utility model provides a technical solution: A multi-station positioning fixture for bonding brightening films includes a machine assembly 1, a linear motor module 2, and a film-applying head 3. A fixing frame 4 is installed on the upper end of the machine assembly 1, and a clamping component 5 is fixedly connected to the inner side of the fixing frame 4. A permanent magnet block 6 is fixedly connected to the front end of the film-applying head 3. The clamping component 5 includes a folded cylinder 51, a circular piece 52 is fixedly connected to the lower end of the folded cylinder 51, a rubber duckbill valve 53 is fixedly connected to the left end of the folded cylinder 51, a flow-limiting hole 54 is opened on the inner side of the rubber duckbill valve 53, a compression spring 55 is fixedly connected to the left end of the folded cylinder 51, a permanent magnet column 56 is fixedly connected to the right end of the compression spring 55, a column block 57 slides inside the folded cylinder 51, a pressure rod 58 slides inside the circular piece 52, and a rubber wheel 59 is rotatably connected to the lower end of the folded cylinder 51.

[0017] As a further implementation of this solution, the machine tool assembly 1 includes a base 11, a servo motor 12 is fixedly connected to the inner side of the base 11, a negative pressure worktable 14 is fixedly connected to the end of the spindle of the servo motor 12, a movable plate 13 is fixedly connected to the top of the negative pressure worktable 14 through multiple spring telescopic rods, and the outer side of the movable plate 13 is fixedly connected to the fixed frame 4. With the above settings, the movable plate 13, the fixed frame 4 and the clamping assembly 5 can be controlled to move upward, so that the brightening film can be placed on the negative pressure worktable 14. The clamping assembly 5 can be moved downward by the pulling force of the spring telescopic rods, so as to clamp the brightening film. As a further implementation of this solution, a negative pressure worktable 14 is fixedly connected to the outside of the servo motor 12 spindle. A gap is provided between the negative pressure worktable 14 and the movable disk 13. Several micro-holes are opened on the inner side of the negative pressure worktable 14. A vacuum pump is fixedly connected to the lower end of the negative pressure worktable 14 near the micro-holes. With the above arrangement, the brightness enhancement film can be accurately placed on the upper end of the micro-holes. The micro-holes can make the negative pressure generated by the vacuum pump act evenly on the surface of the brightness enhancement film, thereby more firmly adsorbing the brightness enhancement film and further improving the accuracy and quality of film application. As a further implementation of this solution, the top of the base 11 is fixedly connected to the linear motor module 2, and the lower end of the linear motor module 2 is fixedly connected to the film application head 3. The permanent magnet block 6 and the permanent magnet column 56 are magnetically repelled. Through the above arrangement, the design of the magnetic repulsion between the permanent magnet block 6 and the permanent magnet column 56 can generate an automatic separation force during the film application process, causing the permanent magnet column 56 to move towards the rubber duckbill valve 53, thereby driving the column block 57 and the pressure rod 58 to move upward, so that the rubber wheel 59 can rotate, realizing the separation of the rubber wheel 59 from the brightness enhancement film. This automatic separation method can not only ensure the smooth progress of the film application process, but also avoid the displacement of the brightness enhancement film caused by improper manual operation, and improve the qualification rate of film application. As a further implementation of this solution, the fixing frame 4 includes a fixing base 41. A crossbeam 42 and a baffle plate 44 are fixedly connected to the front end of the fixing base 41. A rotating hole is opened on the inner side of the crossbeam 42. A spring 43 is fixedly connected to the inner side of the rotating hole of the crossbeam 42. The inner side of the spring 43 is fixedly connected to the outer side of the shaft 45. The shaft 45 is rotatably connected to the inner side of the rotating hole of the crossbeam 42. A rotating arm 46 is fixedly connected to the outer side of the shaft 45. The rotating arm 46 is in contact with the baffle plate 44. A groove 47 is opened at one end of the rotating arm 46. An installation hole is opened on the inner side of the rotating arm 46. The rotating arm 46 is fixedly connected to the outer side of the folded cylinder 51 through the installation hole, which serves to fix the clamping assembly 5. At the same time, after the film applicator 3 squeezes the rotating arm 46, the two rotating arms 46 rotate, so that the contact fixes the brightening film. As a further implementation of this solution, rubber sealing rings are fixedly connected to the outer sides of the permanent magnet column 56 and the column block 57. The permanent magnet column 56 and the column block 57 are sealed to the inner side of the folded cylinder 51 through the rubber sealing rings. Through the above settings, the gas hull is ensured, the position of the pressure rod 58 is controlled, and the convenience of film application is improved.

[0018] Workflow: When positioning the brightness enhancement film, the movable plate 13 is pushed upwards. The movable plate 13 drives the fixed frame 4 and clamping assembly 5 upwards, creating a gap between the bottom of the clamping assembly 5 and the top of the negative pressure worktable 14. Multiple brightness enhancement films are placed on the upper end of the micro-holes of the negative pressure worktable 14. The movable plate 13 is then released, and under the pulling force of the spring telescopic rod, the movable plate 13, fixed frame 4, and clamping assembly 5 move downwards. The rubber wheel 59 positions the brightness enhancement film. Simultaneously, the bottom of the pressure rod 58 contacts the top of the rubber wheel 59, preventing the rubber wheel 59 from rotating. Thus, under external force, the brightness enhancement film will not rotate due to the pressure of the rubber wheel 59. The device moves, and the servo motor 12 is started to drive the entire device on the upper end of the servo motor 12 to rotate. When the brightening film is aligned with the film-applying head 3, the position of the film-applying head 3 is controlled by the linear motor module 2, so that the film-applying head 3 and the permanent magnet block 6 are aligned with the two grooves 47. Then the film-applying head 3 and the permanent magnet block 6 move downward. Before the film-applying head 3 contacts the two grooves 47, the permanent magnet block 6 and the permanent magnet column 56 generate a magnetic repulsive force. The permanent magnet column 56 moves towards the rubber duckbill valve 53 through the magnetic repulsive force. The magnetic repulsive force between the permanent magnet column 56 and the permanent magnet block 6 is one-third of the elastic torque of the spring 43. The permanent magnet column 56 compresses the spring. Spring 55 compresses the gas inside the folded cylinder 51 through the permanent magnet column 56, creating a negative pressure inside the folded cylinder 51. Under the action of negative pressure, the column block 57 and pressure rod 58 move upward, and the pressure rod 58 moves away from the rubber wheel 59, allowing the rubber wheel 59 to rotate. When the film-applying head 3 contacts the rotating arm 46, the film-applying head 3 compresses the two rotating arms 46, causing the rotating arms 46 to rotate. The rotating arms 46 drive the clamping assembly 5 to rotate, thus causing the rubber wheel 59 to adhere to the brightness enhancement film until the film adsorbed at the bottom of the film-applying head 3 is adhered to the brightness enhancement film. After the film-applying head 3 and permanent magnet block 6 move away from the clamping assembly 5, the rotating arm 46 is reset by the spring spring 43, compressing the spring 55. The permanent magnet column 56 is reset, and the column block 57 is reset by the action of gas pressure. The flow restriction hole 54 controls the speed at which external air enters the folding cylinder 51, thereby prolonging the reset speed of the column block 57 and the pressure rod 58. This ensures that after the rotating arm 46 is reset, the pressure rod 58 is in contact with the rubber wheel 59, which facilitates the clamping of the brightness enhancement film again. Based on the above principles, the clamping and positioning mechanism of the device can form a stable fixation before the brightness enhancement film is applied, preventing the brightness enhancement film from being displaced due to external force, thereby ensuring the quality of the brightness enhancement film application. At the same time, this clamping and positioning can be gradually released during the application of the brightness enhancement film, further improving the qualification rate of the brightness enhancement film application.

[0019] 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-station positioning fixture for bonding brightening films, comprising a machine assembly (1), a linear motor module (2), and a film bonding head (3), characterized in that: The upper end of the machine assembly (1) is equipped with a fixed frame (4), and a clamping assembly (5) is fixedly connected to the inner side of the fixed frame (4). A permanent magnet block (6) is fixedly connected to the front end of the film applicator (3). The clamping assembly (5) includes a folded cylinder (51), a circular piece (52) is fixedly connected to the lower end of the folded cylinder (51), a rubber duckbill valve (53) is fixedly connected to the left end of the folded cylinder (51), a flow-limiting hole (54) is opened on the inner side of the rubber duckbill valve (53), a compression spring (55) is fixedly connected to the left end of the folded cylinder (51), a permanent magnet column (56) is fixedly connected to the right end of the compression spring (55), a column block (57) slides on the inner side of the folded cylinder (51), a pressure rod (58) slides on the inner side of the circular piece (52), and a rubber wheel (59) is rotatably connected to the lower end of the folded cylinder (51).

2. The multi-station positioning fixture for bonding brightness enhancement sheets according to claim 1, characterized in that: The machine assembly (1) includes a base (11), a servo motor (12) is fixedly connected to the inner side of the base (11), a negative pressure worktable (14) is fixedly connected to the end of the main shaft of the servo motor (12), and a movable plate (13) is fixedly connected to the top of the negative pressure worktable (14) through multiple spring telescopic rods. The outer side of the movable plate (13) is fixedly connected to the fixed frame (4).

3. The multi-station positioning fixture for bonding brightness enhancement sheets according to claim 2, characterized in that: A negative pressure worktable (14) is fixedly connected to the outside of the spindle of the servo motor (12). A gap is provided between the negative pressure worktable (14) and the movable disk (13). Several micro holes are opened on the inner side of the negative pressure worktable (14). A vacuum pump is fixedly connected to the lower end of the negative pressure worktable (14) near the micro holes.

4. A multi-station positioning fixture for bonding brightness enhancement sheets according to claim 2, characterized in that: The top of the base (11) is fixedly connected to the linear motor module (2), and the lower end of the linear motor module (2) is fixedly connected to the film-applying head (3). The permanent magnet block (6) and the permanent magnet column (56) are magnetically repelled.

5. A multi-station positioning fixture for bonding brightness enhancement sheets according to claim 1, characterized in that: The fixing frame (4) includes a fixing seat (41), and a crossbeam (42) and a baffle plate (44) are fixedly connected to the front end of the fixing seat (41). A rotating hole is opened on the inner side of the crossbeam (42), and a spring spring (43) is fixedly connected to the inner side of the rotating hole of the crossbeam (42). The inner side of the spring spring (43) is fixedly connected to the outer side of the shaft (45), and the shaft (45) is rotatably connected to the inner side of the rotating hole of the crossbeam (42).

6. A multi-station positioning fixture for bonding brightness enhancement sheets according to claim 5, characterized in that: A rotating arm (46) is fixedly connected to the outside of the shaft column (45). The rotating arm (46) is in contact with the baffle plate (44). A groove (47) is provided at one end of the rotating arm (46). An installation hole is provided on the inside of the rotating arm (46). The rotating arm (46) is fixedly connected to the outside of the folded cylinder (51) through the installation hole.

7. A multi-station positioning fixture for bonding brightness enhancement sheets according to claim 1, characterized in that: The permanent magnet column (56) and the column block (57) are both fixedly connected with rubber sealing rings on their outer sides, and the permanent magnet column (56) and the column block (57) are sealed to the inner side of the folded cylinder (51) through the rubber sealing rings.

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