An automatic screw fastening machine for LED display cabinets

Abstract

This utility model discloses an automatic screw fastening machine for LED display cabinets. In use, the cabinet is continuously placed above a feeding belt. After the feeding belt reaches the center of the two side clamping plates, a first cylinder drives a connecting block to move. This causes the connecting block, in conjunction with a connecting rod, to move the two side connecting plates. A fixed rod, in conjunction with an adjusting rod, rotates the first and second support rods on both sides, causing the clamping plates to move. Simultaneously, the two side clamping plates move towards the center, clamping the cabinet in a centered position. This prevents inaccurate positioning due to potential shifting or tilting during transport, which could lead to the screw head not aligning with the screw holes, resulting in stripped screws, loose screws, or scratches on the cabinet surface. During subsequent screw fastening, a drive assembly in conjunction with a moving assembly allows for arbitrary movement of the screw fastening mechanism, enabling screw fastening at different locations on the cabinet surface.

Description

Technical Field

[0001] This utility model relates to the technical field of automatic screw fastening machine for LED display cabinets, specifically an automatic screw fastening machine for LED display cabinets. Background Technology

[0002] In the LED display manufacturing industry, with the rapid development of display technology, the structural complexity and precision requirements of display cabinets are increasing. LED display cabinets are typically made of metal (such as aluminum alloy, die-cast aluminum) or composite materials (such as carbon fiber), and their surfaces have numerous screw holes for mounting LED modules or circuit boards. To ensure the splicing accuracy and stability of the display, the quality of the cabinet screw fastening directly affects the overall product reliability and service life.

[0003] Existing LED display cabinet screw-fastening machines mostly use a single fixed clamp or pneumatic push rod for positioning. However, due to processing errors (such as stamping deformation and welding tolerances) or material characteristics (such as the susceptibility to deformation in thin-walled structures), LED display cabinets are prone to offset or tilting during transport. If the positioning is inaccurate, the screw-fastening head may not be aligned with the screw hole, resulting in stripped screws, loose screws, or scratches on the cabinet surface, significantly reducing the yield rate. Therefore, we propose an automatic screw-fastening machine for LED display cabinets to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic screw fastening machine for LED display cabinets, so as to solve the problem of low unloading efficiency of the automatic screw fastening machine for LED display cabinets mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic screw fastening machine for LED display cabinets, comprising a feeding rack, a support frame, and a screw fastening mechanism;

[0006] The feeding rack has support frames on both sides. The support frames are connected to the drive chamber through a drive assembly. The drive chamber is connected to the assembly block through a moving assembly. The assembly block has a mounting plate that slides on its front side. The mounting plate has a screw locking mechanism. The feeding rack has a centering clamping assembly.

[0007] The centering clamping assembly includes a fixed rod, a first support rod, a second support rod, and a clamping plate. The bottom of the feeding rack is provided with a fixed plate, and the top of the fixed plate is provided with a first cylinder. The output end of the first cylinder is connected to the side wall of the connecting block. Connecting rods are hinged to both sides of the connecting block. Connecting plates are hinged to one end of each of the two sets of connecting rods. A fixed rod is provided at the top of the connecting plate. Two sets of assembly plates are provided on both sides of the feeding rack. First support rods are hinged to the top of both ends of the two sets of assembly plates. One end of each of the two sets of first support rods is hinged to one end of an adjusting rod. The middle position of each of the two sets of adjusting rods is hinged to both ends of the fixed rod. A second support rod is hinged to one end of each of the two sets of adjusting rods. One end of each of the two sets of second support rods is hinged to both ends of the clamping plate.

[0008] As a preferred technical solution of this utility model, the top of both sides of the fixing plate is provided with fixing blocks, and a first limiting rod is slidably provided through both sets of fixing blocks, and one end of each set of first limiting rods is connected to the side wall of the connecting block.

[0009] As a preferred technical solution of this utility model, both sets of assembly plates are provided with a fixed seat on the top, and both sets of fixed seats are provided with a second limiting rod that slides through them. One end of each set of second limiting rods is connected to the outer wall of the clamping plate.

[0010] As a preferred technical solution of this utility model, the driving component includes a lead screw and a slider. The slider is slidably provided inside both sets of support frames. The lead screw is rotatably provided inside the front support frame of the feeding frame. The lead screw is threadedly connected to the slider inside the support frame on the same side. The two sets of sliders are connected through a driving chamber.

[0011] As a preferred technical solution of this utility model, the moving component includes a rotating shaft, a gear, a rack and a moving groove. An assembly block is slidably provided on the drive chamber. A rotating shaft is rotatably provided at the center position inside the assembly block. A gear is installed on the rotating shaft. A rack that meshes with the gear is installed on the inner wall of the drive chamber. Moving grooves for moving the rotating shaft are provided on both side walls of the drive chamber.

[0012] As a preferred embodiment of this utility model, the top of the assembly block is provided with a movable plate, the movable plate is connected to the mounting plate by a movable rod, and the top of the assembly block is provided with a second cylinder, the output end of the second cylinder being connected to the movable plate.

[0013] As a preferred embodiment of this utility model, the feeding rack is provided with a feeding belt inside, the feeding belt is driven by a driving mechanism, and the screw-locking mechanism is fed by an external feeding system.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: When using the automatic screw fastening machine for LED display cabinets, the cabinet is continuously placed above the feeding belt. After the feeding belt reaches the center position of the clamping plates on both sides, the connecting block is moved by the first cylinder. This causes the connecting block, in conjunction with the connecting rod, to move the connecting plates on both sides. Then, the fixing rod, in conjunction with the adjusting rod, causes the first and second support rods on both sides to rotate, thereby moving the clamping plates. The clamping plates on both sides move towards the center at the same time, clamping the cabinet in a centered position. This avoids inaccurate positioning due to easy deviation or tilting during the conveying process, which could prevent the screw head from aligning with the screw hole, resulting in stripped screws, loose screws, or scratches on the cabinet surface. In the subsequent screw fastening process, the drive component, in conjunction with the moving component, can move the screw fastening mechanism to any position, thereby fastening screws at different positions on the cabinet surface. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of a half-section of the drive chamber of this utility model;

[0017] Figure 3 This is a schematic diagram of the centering clamping component structure of this utility model;

[0018] Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Feeding rack; 2. Support frame; 3. Screw locking mechanism; 4. Drive assembly; 401. Lead screw; 402. Slider; 5. Drive chamber; 6. Moving assembly; 601. Rotating shaft; 602. Gear; 603. Rack; 604. Moving groove; 7. Assembly block; 8. Mounting plate; 9. Centering clamping assembly; 902. Fixing rod; 903. First support rod; 904. Second support rod; 905. Clamping plate; 10. Fixing plate; 11. First cylinder; 12. Connecting block; 13. Connecting rod; 14. Connecting plate; 15. Assembly plate; 16. Adjusting rod; 17. Fixing block; 18. First limit rod; 19. Fixing seat; 20. Second limit rod; 21. Moving plate; 22. Moving rod; 23. Second cylinder; 24. Feeding belt. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 This utility model provides a technical solution: an automatic screw fastening machine for LED display cabinets, including a feeding rack 1, a support frame 2, and a screw fastening mechanism 3;

[0022] The feeding rack 1 has support frames 2 on both sides. The support frames 2 are connected to the driving chamber 5 through a driving assembly 4. The driving assembly 4 includes a lead screw 401 and a slider 402. The slider 402 is slidably installed inside both sets of support frames 2. The lead screw 401 is rotatably installed inside the front support frame 2 of the feeding rack 1. The lead screw 401 is threadedly connected to the slider 402 inside the support frame 2 on the same side. The two sets of sliders 402 are connected through the driving chamber 5. The driving chamber 5 is connected to the assembly block 7 through a moving assembly 6. The moving assembly 6 includes a rotating shaft 601, a gear 602, a rack 603, and a moving groove 604. The assembly block 7 is slidably installed on the driving chamber 5. The rotating shaft 601 is rotatably installed at the center position inside the assembly block 7. The gear 602 is installed on the rotating shaft 601. The rack 603 that meshes with the gear 602 is installed on the inner wall of the driving chamber 5. Moving grooves 604 for the movement of the rotating shaft 601 are opened on both side walls of the driving chamber 5. The assembly block 7 has a sliding mounting plate 8 on its front side, and a screw-locking mechanism 3 on the mounting plate 8. The top of the assembly block 7 has a moving plate 21, which is connected to the mounting plate 8 by a moving rod 22. The top of the assembly block 7 has a second cylinder 23, the output end of which is connected to the moving plate 21. The feeding rack 1 has a centering clamping component 9, and the feeding rack 1 has a feeding belt 24 inside. The feeding belt 24 is driven by a drive mechanism, and the screw-locking mechanism 3 is fed by an external feeding system.

[0023] At this time, the second cylinder 23 drives the moving plate 21 to move, so that the moving plate 21 drives the mounting plate 8 to slide above the assembly block 7 via the moving rod 22, so that the screw-locking mechanism 3 installed on the surface of the mounting plate 8 descends to complete the screw-locking of the box. During use, the screw-locking mechanism 3 is continuously fed by the external feeding system. Both the screw-locking mechanism 3 and the feeding system are existing technologies. At the same time, during the screw-locking process, the motor drives the rotating shaft 601 to rotate, so that the rotating shaft 601 drives the gear 602 to rotate. Since the gear 602 and the rack 603 mesh, the gear 602 drives the rotating shaft 601 to slide inside the moving groove 604 on the surface of the drive chamber 5, so that the position of the assembly block 7 changes. At the same time, the motor above the support frame 2 drives the lead screw 401 to rotate, so that the lead screw 401 drives the slider 402 to move. The slider 402 drives the drive chamber 5 to move laterally, which facilitates the screw-locking of different positions on the box.

[0024] The centering clamping assembly 9 includes a fixing rod 902, a first support rod 903, a second support rod 904, and a clamping plate 905. A fixing plate 10 is provided at the bottom of the feeding rack 1. Fixing blocks 17 are provided at the top of both sides of the fixing plate 10. First limiting rods 18 are slidably mounted through both sets of fixing blocks 17. One end of each set of first limiting rods 18 is connected to the side wall of the connecting block 12. A first cylinder 11 is provided at the top of the fixing plate 10. The output end of the first cylinder 11 is connected to the side wall of the connecting block 12. Connecting rods 13 are hinged to both sides of the connecting block 12. A connecting plate 14 is hinged to one end of each set of connecting rods 13. A fixing rod 902 is provided at the top of the connecting plate 14. The feeding rack 1 has two sets of assembly plates 15 on both sides. The top of each end of the two sets of assembly plates 15 is hinged with a first support rod 903. The top of each set of assembly plates 15 is provided with a fixed seat 19. The two sets of fixed seats 19 are slidably provided with a second limiting rod 20. One end of each set of second limiting rods 20 is connected to the outer wall of the clamping plate 905. One end of each set of first support rods 903 is hinged to one end of an adjusting rod 16. The middle position of each set of adjusting rods 16 is hinged to both ends of the fixed rod 902. One end of each set of adjusting rods 16 is hinged with a second support rod 904. One end of each set of second support rods 904 is hinged to both ends of the clamping plate 905.

[0025] After the box is placed above the feeding belt 24 inside the feeding rack 1, the feeding belt 24 is driven by an external drive mechanism to feed the box to the middle position of the two side clamping plates 905. Then, the connecting block 12 is moved by the first cylinder 11. At the same time, the connecting block 12 drives the first limiting rods 18 on both sides to slide inside the fixed block 17. At this time, the connecting block 12 drives the connecting rods 13 on both sides through the hinge shaft. The connecting rods 13, in conjunction with the hinge shaft, drive the connecting plate 14. The connecting plate 14 drives the fixed rod 902 to move. At this time, the two sides of the fixed rod 902 drive the adjusting rod 16 through the hinge shaft, and the two ends of the first support rod 903 and the second support rod 904 are rotated respectively through the hinge shaft. The second support rod 904 drives the clamping plate 905 to move. At the same time, the clamping plate 905 drives the second limiting rod 20 to slide inside the fixed seat 19. Then, the clamping plates 905 on both sides move towards the middle position at the same time to complete the centering clamping of the box.

[0026] Working principle: When using the automatic screw fastening machine for LED display cabinets, after the cabinet is placed above the feeding belt 24 inside the feeding rack 1, the feeding belt 24 is driven by an external drive mechanism to feed the cabinet to the middle position of the two side clamps 905. Then, the first cylinder 11 drives the connecting block 12 to move. At the same time, the connecting block 12 drives the first limit rods 18 on both sides to slide inside the fixed block 17. At this time, the connecting block 12 drives the connecting rods 13 on both sides through the hinge shaft. The connecting rods 13 cooperate with the hinge shaft to drive the connecting... Plate 14, connecting plate 14 drives fixed rod 902 to move. At this time, the two sides of fixed rod 902 drive adjusting rod 16 through hinge shafts, and the two ends of adjusting rod 16 drive the first support rod 903 and the second support rod 904 to rotate respectively. The second support rod 904 drives clamping plate 905 to move. At the same time, clamping plate 905 drives second limiting rod 20 to slide inside fixed seat 19. Then, the clamping plates 905 on both sides move towards the middle position to complete the centering clamping of the box. At this time, the second cylinder 23 drives moving plate 2 1. The moving plate 21 is moved so that the moving rod 22 drives the mounting plate 8 to slide above the assembly block 7, causing the screw-locking mechanism 3 mounted on the surface of the mounting plate 8 to descend and complete the screw-locking of the box. During use, the screw-locking mechanism 3 is continuously fed by an external feeding system. Both the screw-locking mechanism 3 and the feeding system are existing technologies. At the same time, during the screw-locking process, the motor drives the rotating shaft 601 to rotate, which drives the gear 602 to rotate. Since the gear 602 and the rack 603 mesh, the gear 602 drives the rotating shaft 601 to slide inside the moving groove 604 on the surface of the drive chamber 5, changing the position of the assembly block 7. At the same time, the motor above the support frame 2 drives the lead screw 401 to rotate, which drives the slider 402 to move. The slider 402 drives the drive chamber 5 to move laterally, facilitating the screw-locking of different positions on the box, thus completing a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An automatic screw fastening machine for LED display cabinets, comprising a feeding rack (1), a support frame (2), and a screw fastening mechanism (3); characterized in that The feeding rack (1) is provided with support frames (2) on both sides. The support frames (2) are connected to the drive chamber (5) through the drive assembly (4). The drive chamber (5) is connected to the assembly block (7) through the moving assembly (6). The assembly block (7) is slidably provided with an mounting plate (8) on the front side. The mounting plate (8) is provided with a screw locking mechanism (3). The feeding rack (1) is provided with a centering clamping assembly (9). The centering clamping assembly (9) includes a fixed rod (902), a first support rod (903), a second support rod (904), and a clamping plate (905). The bottom of the feeding rack (1) is provided with a fixed plate (10), and the top of the fixed plate (10) is provided with a first cylinder (11). The output end of the first cylinder (11) is connected to the side wall of the connecting block (12). The connecting block (12) is hinged with connecting rods (13) on both sides. One end of each of the two sets of connecting rods (13) is hinged with a connecting plate (14). The top of the connecting plate (14) is provided with a clamping plate. The fixed rod (902) has two sets of assembly plates (15) on both sides of the feeding rack (1). The top of both ends of the two sets of assembly plates (15) are hinged with first support rods (903). One end of the two sets of first support rods (903) is hinged to one end of the adjusting rod (16). The middle position of the two sets of adjusting rods (16) is respectively hinged to both ends of the fixed rod (902). One end of the two sets of adjusting rods (16) is hinged with a second support rod (904). One end of the two sets of second support rods (904) is respectively hinged to both ends of the clamping plate (905).

2. The LED display screen box automatic screw locking machine according to claim 1, characterized in that, The top of both sides of the fixing plate (10) is provided with fixing blocks (17), and the two sets of fixing blocks (17) are provided with first limiting rods (18) that slide through them. One end of the two sets of first limiting rods (18) is connected to the side wall of the connecting block (12).

3. The LED display screen box automatic screw locking machine according to claim 1, characterized in that, Both sets of assembly plates (15) are provided with a fixed seat (19) at the top, and both sets of fixed seats (19) are provided with a second limiting rod (20) that slides through them. One end of both sets of second limiting rods (20) is connected to the outer wall of the clamping plate (905).

4. The automatic screw fastening machine for LED display cabinets according to claim 1, characterized in that, The drive assembly (4) includes a lead screw (401) and a slider (402). The slider (402) is slidably provided inside both sets of support frames (2). The lead screw (401) is rotatably provided inside the front support frame (2) of the feeding frame (1). The lead screw (401) is threadedly connected to the slider (402) inside the support frame (2) on the same side. The two sets of sliders (402) are connected through the drive chamber (5).

5. An automatic screw fastening machine for LED display cabinets according to claim 1, characterized in that, The moving component (6) includes a rotating shaft (601), a gear (602), a rack (603), and a moving groove (604). An assembly block (7) is slidably provided on the drive housing (5). The rotating shaft (601) is rotatably provided at the center position inside the assembly block (7). A gear (602) is installed on the rotating shaft (601). A rack (603) that meshes with the gear (602) is installed on the inner wall of the drive housing (5). Moving grooves (604) for the movement of the rotating shaft (601) are provided on both side walls of the drive housing (5).

6. The automatic screw fastening machine for LED display cabinets according to claim 1, characterized in that, The top of the assembly block (7) is provided with a movable plate (21), and the movable plate (21) is connected to the mounting plate (8) by a movable rod (22). The top of the assembly block (7) is provided with a second cylinder (23), and the output end of the second cylinder (23) is connected to the movable plate (21).

7. An automatic screw fastening machine for LED display cabinets according to claim 1, characterized in that, The feeding rack (1) is equipped with a feeding belt (24) inside. The feeding belt (24) is driven by a driving mechanism, and the screw locking mechanism (3) is fed by an external feeding system.

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