Multi-type license plate quality inspection mechanism

Abstract

The utility model relates to license plate quality inspection technical field discloses a kind of multi-type license plate quality inspection mechanism, including workbench, the workbench top end is equipped with conveyor belt, the workbench top end right side is fixedly connected with first support frame, the first support frame top end is provided with knob, the knob bottom end is fixedly connected with pivot, the pivot outer wall rotationally connects in the first support frame inner wall, the pivot outer wall is provided with limit component, the pivot is connected with front and back two sides limit plate by guide component, the workbench top end left side is fixedly connected with second support frame, the second support frame inner wall front and back two sides are slidably connected with two sides slide bar. In the utility model, the limit plate on the conveyor belt is adjusted, so that the license plate of different types can be guided, the license plate deviation on the conveyor belt is prevented, and the fixed plate is fixed to the license plate, to avoid the license plate movement when shooting and cause the unclearness of photograph.

Description

Technical Field

[0001] This utility model relates to the field of license plate quality inspection technology, and in particular to a multi-type license plate quality inspection agency. Background Technology

[0002] In the efficient operation of modern transportation systems and numerous industries, license plates play a crucial role in identification. As the primary means of transportation, motor vehicles rely on their license plates for vehicle identification, traffic management enforcement, and the operation of intelligent transportation systems. From the common blue-and-white license plates for ordinary fuel vehicles, to green-and-black license plates for new energy vehicles, and yellow-and-black license plates for large vehicles, each type carries important information such as vehicle ownership and usage, and is widely used in scenarios such as road traffic supervision, vehicle registration, electronic toll collection, and parking management.

[0003] In the field of license plate quality inspection and information collection, accurate and clear license plate images are the foundation for license plate character recognition and information verification. Currently, in automated license plate production and inspection lines, the movement of license plates on conveyor belts causes problems such as ghosting and blurring in the images captured by data acquisition cameras. This greatly affects the accuracy of license plate character recognition systems, increases the cost of manual review, and may even lead to misjudgments in quality inspection results.

[0004] In response to the technical problem that blurry images are easily captured when license plates are moving on a conveyor belt, this application proposes a multi-type license plate quality inspection agency. Utility Model Content

[0005] The purpose of this invention is to address the problem of blurry images when license plates are photographed while moving on a conveyor belt. It proposes a multi-type license plate quality inspection mechanism that adjusts the limiting plates on the conveyor belt to guide different types of license plates, preventing them from veering off course. The fixing plates also secure the license plates, ensuring the data acquisition camera can clearly capture license plate information and avoiding blurry images caused by license plate movement during photography.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-type license plate quality inspection mechanism, including a workbench, a conveyor belt installed at the top of the workbench, a first support frame fixedly connected to the right side of the top of the workbench, a knob provided at the top of the first support frame, a rotating shaft fixedly connected to the bottom of the knob, the outer wall of the rotating shaft rotatably connected to the inner wall of the first support frame, a limit component provided on the outer wall of the rotating shaft, the rotating shaft being connected to the front and rear limit plates through a guide component, a second support frame fixedly connected to the left side of the top of the workbench, and sliding rods slidably connected to the front and rear sides of the inner wall of the second support frame, the sliding rods being connected to a fixed plate through a fixed component.

[0007] Furthermore, the limiting component includes a first locking tooth fixedly connected to the inner wall of the first support frame, and a second locking tooth fixedly connected to the outer wall of the rotating shaft, wherein the first locking tooth engages with the second locking tooth.

[0008] Furthermore, a turntable is rotatably connected to the top of the second tooth, and a first spring is fixedly connected to the top of the turntable. The top of the first spring is fixedly connected to the inner wall of the first support frame.

[0009] Furthermore, the guide assembly includes a gear fixedly connected to the bottom end of the rotating shaft, with toothed plates meshing on both sides of the outer wall of the gear, the top end of the toothed plates slidably connected to the inner wall of the first support frame, and the top end of the limiting plate fixedly connected to the bottom end of the toothed plates.

[0010] Furthermore, the fixing assembly includes a control plate fixedly connected to the outer wall of the slide bar, and two connecting rods are fixedly connected to opposite ends of the control plate on both the front and rear sides, and the opposite ends of the fixing plate are respectively fixedly connected to opposite ends of the connecting rods.

[0011] Furthermore, a second spring is sleeved on the outer wall of the slide rod, one end of the second spring is connected to the control plate, and the other end of the second spring is connected to the second support frame.

[0012] Furthermore, electric push rods are fixedly connected to both the front and rear sides of the inner wall of the second support frame, and a moving plate is fixedly connected to the drive end of each electric push rod.

[0013] Furthermore, a data acquisition camera and a metal sensor are fixedly connected to the bottom inner side of the second support frame, with the metal sensor located at the right end of the data acquisition camera.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, rotating the knob drives the rotating shaft to rotate, thereby causing the gear at the bottom to drive the toothed plates on both sides to move closer to each other, so that the limiting plate on the conveyor belt can be adjusted, thereby guiding different types of license plates and preventing the license plates from deviating on the conveyor belt.

[0016] 2. In this utility model, when the metal sensor detects the license plate, the electric push rod will drive the moving plate to move towards the center, removing the restriction on the control plate, thereby causing the second spring to move the control plate towards the center, so that the fixing plate fixes the license plate, enabling the data acquisition camera to clearly capture the license plate information, avoiding unclear photos caused by the license plate moving during shooting. Attached Figure Description

[0017] Figure 1 A perspective view of a multi-type license plate quality inspection agency proposed in this utility model;

[0018] Figure 2 This is a sectional view of the first support frame of a multi-type license plate quality inspection agency proposed in this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a cross-sectional view of the second support frame of a multi-type license plate quality inspection mechanism proposed in this utility model;

[0021] Figure 5 This is a schematic diagram of the control panel of a multi-type license plate quality inspection agency proposed in this utility model.

[0022] Legend:

[0023] 1. Workbench; 2. Conveyor belt; 3. First support frame; 4. Knob; 5. Rotary shaft; 6. First locking tooth; 7. Second locking tooth; 8. Turntable; 9. First spring; 10. Gear; 11. Tooth plate; 12. Limiting plate; 13. Second support frame; 14. Slide rod; 15. Control board; 16. Fixing plate; 17. Second spring; 18. Electric push rod; 19. Moving plate; 20. Data acquisition camera; 21. Metal sensor; 22. Connecting rod. Detailed Implementation

[0024] 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.

[0025] Reference Figures 1-3 This utility model provides an embodiment of a multi-type license plate quality inspection mechanism, including a workbench 1, a conveyor belt 2 installed at the top of the workbench 1, a first support frame 3 fixedly connected to the right side of the top of the workbench 1, a knob 4 provided at the top of the first support frame 3, a rotating shaft 5 fixedly connected to the bottom of the knob 4, the outer wall of the rotating shaft 5 rotatably connected to the inner wall of the first support frame 3, a first locking tooth 6 fixedly connected to the inner wall of the first support frame 3, a second locking tooth 7 fixedly connected to the outer wall of the rotating shaft 5, the first locking tooth 6 and the second locking tooth 7 engaging, a turntable 8 rotatably connected to the top of the second locking tooth 7, a first spring 9 fixedly connected to the top of the turntable 8, the top of the first spring 9 fixedly connected to the inner wall of the first support frame 3, a gear 10 fixedly connected to the bottom of the rotating shaft 5, toothed plates 11 meshing with both sides of the outer wall of the gear 10, the top of the toothed plates 11 slidably connected to the inner wall of the first support frame 3, and a limiting plate 12 fixedly connected to the bottom of the toothed plates 11.

[0026] Specifically, the workbench 1 is equipped with a motor to drive the conveyor belt 2. The gear 10 is relatively long. When the knob 4 is moved upward, the gear 10 will also move upward. However, the gear 10 is relatively long and still meshes with the toothed plates 11 on both sides. The turntable 8 rotates between the turntable and the second tooth 7. This ensures that when the rotating shaft 5 drives the second tooth 7 to rotate, it will not affect the first spring 9. The rotating shaft 5 passes through the turntable 8 and the first tooth 6 without contacting them.

[0027] Reference Figure 4 and Figure 5 A second support frame 13 is fixedly connected to the top left of the workbench 1. Two sliding rods 14 are slidably connected to the front and rear sides of the inner wall of the second support frame 13. A control plate 15 is fixedly connected to the outer wall of the sliding rod 14. Two connecting rods 22 are fixedly connected to the opposite ends of the front and rear control plates 15. The opposite ends of the fixed plates 16 are respectively fixedly connected to the opposite ends of the connecting rods 22. A second spring 17 is sleeved on the outer wall of the sliding rod 14. One end of the second spring 17 is connected to the control plate 15, and the other end of the second spring 17 is connected to the second support frame 13. Electric push rods 18 are fixedly connected to the front and rear sides of the inner wall of the second support frame 13. The driving ends of the electric push rods 18 are fixedly connected to the moving plates 19. A data acquisition camera 20 and a metal sensor 21 are fixedly connected to the bottom inner side of the second support frame 13. The metal sensor 21 is located at the right end of the data acquisition camera 20.

[0028] Specifically, there is a large space between the control plate 15 and the fixed plate 16. When the moving plate 19 moves, it releases the limit on the control plate 15. The second spring 17 then pushes the fixed plate 16 to the outside of the license plate, which can accommodate different types of license plates. A control console is installed on the workbench 1. The control console controls the conveyor belt 2, the electric push rod 18, the data acquisition camera 20, and the metal sensor 21 through electrical connection. After the metal sensor 21 detects the license plate, it will activate the electric push rod 18 through the control console. After the data acquisition camera 20 captures the license plate image, it will send it to the control console for image recognition processing, output string information, and match it with the information searched in the database. If they match, the quality inspection is passed. If they do not match, a warning is issued.

[0029] Working principle: During use, adjust the distance between the upper limit plates 12 of the conveyor belt 2 according to the type of license plate to be detected. Move the knob 4 upward, so that the knob 4 drives the second locking tooth 7 upward through the rotating shaft 5, causing the second locking tooth 7 to disengage from the first locking tooth 6. At the same time, the second locking tooth 7 drives the turntable 8 upward and compresses the first spring 9. Then rotate the knob 4, so that the knob 4 drives the gear 10 to rotate through the rotating shaft 5. The gear 10 drives the toothed plates 11 on both sides to slide inside the first support frame 3. The toothed plates 11 drive the limit plates 12 to move, changing the distance between the front and rear limit plates 12, which can guide different types of license plates. Then release the knob 4, and the first spring 9 returns to its original position. Turntable 8 drives the second locking tooth 7 to move downwards and engage with the first locking tooth 6, fixing the rotating shaft 5 and thus fixing the limiting plate 12. Then, the license plate is placed on the conveyor belt 2, which will move the license plate to the left. When the metal sensor 21 detects the license plate, the electric push rod 18 will be activated, driving the moving plate 19 to move towards the middle of the conveyor belt 2, so that the moving plate 19 can release the restriction on the control plate 15. The second spring 17 moves the control plate 15 towards the middle of the conveyor belt 2, and the control plate 15 will drive the fixing plate 16 to move closer to the outside of the license plate through the connecting rod 22, so that the fixing plate 16 fixes the license plate. Then, the data acquisition camera 20 will take a picture of the license plate.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-type license plate inspection mechanism, characterized in that, The system includes a workbench (1), a conveyor belt (2) installed on the top of the workbench (1), a first support frame (3) fixedly connected to the right side of the top of the workbench (1), a knob (4) provided on the top of the first support frame (3), a rotating shaft (5) fixedly connected to the bottom of the knob (4), the outer wall of the rotating shaft (5) being rotatably connected to the inner wall of the first support frame (3), a limit assembly provided on the outer wall of the rotating shaft (5), the rotating shaft (5) being connected to the front and rear limit plates (12) through a guide assembly, a second support frame (13) fixedly connected to the left side of the top of the workbench (1), and two sliding rods (14) slidably connected to the front and rear sides of the inner wall of the second support frame (13), the sliding rods (14) being connected to the fixed plate (16) through a fixed assembly.

2. The multi-type license plate inspection apparatus according to claim 1, wherein: The limiting component includes a first locking tooth (6) fixedly connected to the inner wall of the first support frame (3), and a second locking tooth (7) fixedly connected to the outer wall of the rotating shaft (5). The first locking tooth (6) and the second locking tooth (7) engage with each other.

3. The multi-type license plate inspection apparatus according to claim 2, wherein: The top of the second tooth (7) is rotatably connected to a turntable (8), and the top of the turntable (8) is fixedly connected to a first spring (9), the top of the first spring (9) being fixedly connected to the inner wall of the first support frame (3).

4. The multi-type license plate inspection apparatus according to claim 1, wherein: The guide assembly includes a gear (10) fixedly connected to the bottom end of the rotating shaft (5). Both sides of the outer wall of the gear (10) are meshed with toothed plates (11). The top end of the toothed plates (11) is slidably connected to the inner wall of the first support frame (3). The top end of the limiting plate (12) is fixedly connected to the bottom end of the toothed plates (11).

5. The multi-type license plate inspection apparatus according to claim 1, wherein: The fixing assembly includes a control plate (15) fixedly connected to the outer wall of the slide bar (14). Two connecting rods (22) are fixedly connected to the opposite ends of the control plates (15) on both the front and rear sides. The opposite ends of the fixing plates (16) are respectively fixedly connected to the opposite ends of the connecting rods (22).

6. A multi-type license plate quality inspection agency according to claim 5, characterized in that: The outer wall of the slide rod (14) is fitted with a second spring (17), one end of the second spring (17) is connected to the control plate (15), and the other end of the second spring (17) is connected to the second support frame (13).

7. The multi-type license plate inspection apparatus according to claim 6, wherein: Electric push rods (18) are fixedly connected to both the front and rear sides of the inner wall of the second support frame (13), and a moving plate (19) is fixedly connected to the driving end of each electric push rod (18).

8. The multi-type license plate inspection apparatus according to claim 1, wherein: The data acquisition camera (20) and the metal sensor (21) are fixedly connected to the bottom inner side of the second support frame (13), and the metal sensor (21) is located at the right end of the data acquisition camera (20).

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