A machine vision-based tire appearance precision detection device
By using a multi-directional industrial camera and a motor-driven rotating device, the problems of low efficiency and poor accuracy in traditional tire appearance inspection have been solved, achieving all-round high-precision tire appearance inspection and meeting the needs of high-speed production lines.
Patent Information
- Application Number
- CN202521227008.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-16
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-06-16
AI Technical Summary
Traditional tire appearance inspection relies on manual labor, which is inefficient and highly subjective. Existing machine vision inspection devices have a single inspection perspective and poor positioning and rotation stability, making it difficult to meet the needs of high-precision and high-speed production.
It employs a multi-directional industrial camera in conjunction with lifting and telescopic cylinders to achieve all-round tire inspection and precise positioning. Combined with a motor-driven rotating device, it ensures smooth tire rotation and is equipped with machine vision algorithms for defect identification.
It enables 360° inspection of tire appearance without blind spots, improving inspection accuracy and efficiency, reducing labor costs, and adapting to the pace of high-speed production lines.
Smart Images
Figure CN224682138U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of detection device technology, specifically a precision tire appearance detection device based on machine vision. Background Technology
[0002] As a critical component of automobiles, tires' quality directly affects driving safety and performance. With the continuous increase in car ownership, the demand for tires is constantly growing, making quality control of tires increasingly crucial.
[0003] In the modern tire manufacturing industry, tire appearance quality is crucial, directly impacting vehicle safety and performance. Traditional tire appearance inspection relies heavily on manual labor, which is inefficient, subjective, and unsuitable for large-scale, high-precision production. While some companies have introduced machine vision inspection technology, existing inspection devices suffer from shortcomings in structural design and functionality. For example, they offer a single inspection perspective, failing to provide comprehensive coverage of the tire's appearance; poor tire positioning and rotational stability during inspection affects accuracy; and low levels of automation make them ill-suited for the pace of high-speed production lines. Utility Model Content
[0004] The purpose of this invention is to provide a precision tire appearance inspection device based on machine vision. By installing multiple rotating devices and inspection devices with a tire transmission device, the inspection device has omnidirectional inspection capabilities, as well as precise positioning and stable rotation functions, thereby improving inspection efficiency and solving the technical problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A machine vision-based precision inspection device for tire appearance, including A tire transmission device, wherein a detection device is installed at the upper end of the tire transmission device; the detection device is provided with four rotating devices arranged in a circular array. The detection device includes a detection frame, the bottom of which is fixedly connected to a conveying device. The upper surface of the detection frame is provided with four cylinder mounting plates in a circular array, each of which is equipped with a telescopic cylinder. The top of the detection frame is fixedly connected to a lifting cylinder, and the end of the lifting cylinder is fixedly connected to an axial industrial camera. The upper surface and one side of the detection frame are also fixedly connected to a fixed frame and a rodless lifting cylinder, respectively. An upper industrial camera is mounted on the fixed frame, and the bottom of the rodless lifting cylinder is fixedly connected to a circumferential industrial camera.
[0006] As a further technical solution of this utility model, the inner side of the conveying device is provided with two connecting plates, each of which is provided with a symmetrical arc groove, and the conveying device is also provided with a bottom detection port.
[0007] As a further technical solution of this utility model, the upper surface of the conveying device is connected to the tire in a rolling manner, and the lower end of the conveying device is provided with a bottom mounting frame. A lower industrial camera is fixedly installed on the bottom mounting frame, and the upper end of the lower industrial camera is connected to the bottom detection port.
[0008] As a further technical solution of this utility model, the plurality of arc grooves are slidably connected to the bottom of their respective conical support rollers, the upper ends of the plurality of conical support rollers are connected to their respective mounting seats, and the tops pass through the mounting seats and are fixedly connected to the driven wheels; the bottom of the mounting seats is rotatably connected to the detection frame.
[0009] As a further technical solution of this utility model, a transmission box is installed on the upper end of the mounting base, the inner side of the upper end of the transmission box is connected to the motor, the lower end of the motor is fixedly connected to the rotating wheel, and the rotating wheel is connected to the driven wheel through a belt.
[0010] As a further technical solution of this utility model, each of the plurality of mounting seats is provided with a connector on its outer side, and the connector is connected to the telescopic cylinder.
[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention, when performing appearance inspection, is equipped with an axial industrial camera, an upper industrial camera, a circumferential industrial camera, and a lower industrial camera. A lifting cylinder drives the axial industrial camera to flexibly adjust its height and acquire axial images of the tire. The upper industrial camera is fixed on a mounting frame and can acquire appearance information of the upper side of the tire. A rodless lifting cylinder drives the circumferential industrial camera to move and acquire circumferential images of the tire. The lower industrial camera takes pictures of the lower side of the tire through a bottom inspection port. With the multi-directional cameras working together, the tire appearance can be inspected 360° without blind spots, leaving no detail undetected, greatly improving the comprehensiveness and accuracy of the inspection. In this invention, when the tire is in operation, the telescopic cylinder pushes the mounting base and conical support rollers, etc. The conical support rollers slide in the arc groove, which can accurately clamp the tire and achieve stable positioning. The motor is installed in the transmission box, which drives the rotating wheel, and drives the driven wheel and conical support rollers to rotate through the belt, ensuring that the tire rotates smoothly and at a constant speed during the testing process, avoiding testing errors caused by shaking or unstable rotation, and ensuring reliable testing results. This invention features a conveying device that automatically transports tires; a telescopic cylinder that automatically positions and clamps the tires; a motor that automatically drives the tires to rotate; and lifting cylinders and rodless lifting cylinders that automatically adjust the position of the industrial camera for image acquisition. All components operate automatically and in an orderly manner, reducing manual operation, which not only improves testing efficiency but also reduces labor costs, making it well-suited to the pace of high-speed production lines. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0013] Figure 2 This utility model Figure 1 Top view.
[0014] Figure 3 This utility model Figure 2 A bottom view.
[0015] Figure 4 This utility model Figure 2 A partial breakdown diagram.
[0016] Figure 5 This utility model Figure 4 A partial breakdown diagram.
[0017] Figure 6 This utility model Figure 5 Front view.
[0018] Figure 7 This utility model Figure 4 A schematic diagram of the split structure.
[0019] Figure 8 This utility model Figure 7 Front view.
[0020] Figure 9 This utility model Figure 5 A magnified view of a portion of the image.
[0021] In the diagram: 1-Tire transmission device, 2-Detection device, 3-Rotation device; 11-Conveying device, 12-Connecting plate, 13-Circular arc groove, 14-Bottom inspection port, 15-Tire, 16-Bottom mounting bracket; 21-Inspection frame, 22-Cylinder mounting plate, 23-Lifting cylinder, 24-Axial industrial camera, 25-Fixed frame, 26-Upper industrial camera, 27-Rodless lifting cylinder, 28-Circumferential industrial camera, 29-Lower industrial camera; 31-Mounting base, 32-Conical support roller, 33-Transmission box, 34-Motor, 35-Rotating wheel, 36-Belt, 37-Driven wheel, 38-Connector, 39-Telescopic cylinder. 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. 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.
[0023] Please see Figure 1-9 In this embodiment of the present invention, a precision tire appearance inspection device based on machine vision includes a tire transmission device 1, and an inspection device 2 is installed on the upper end of the tire transmission device 1; the inspection device 2 is provided with four rotating devices 3 in a ring array. The detection device 2 includes a detection frame 21. The bottom of the detection frame 21 is fixedly connected to the conveying device 11. The upper surface of the detection frame 21 is provided with four cylinder mounting plates 22 in a circular array. Each cylinder mounting plate 22 is equipped with a telescopic cylinder 39. The top of the detection frame 21 is fixedly connected to a lifting cylinder 23. The end of the lifting cylinder 23 is fixedly connected to an axial industrial camera 24. The upper surface and one side of the detection frame 21 are also fixedly connected to a fixed frame 25 and a rodless lifting cylinder 27, respectively. An upper industrial camera 26 is installed on the fixed frame 25. The bottom of the rodless lifting cylinder 27 is fixedly connected to a circumferential industrial camera 28.
[0024] By adopting the above technical solution, when performing appearance inspection, the device is equipped with an axial industrial camera 24, an upper industrial camera 26, a circumferential industrial camera 28, and a lower industrial camera 29. The lifting cylinder 23 drives the axial industrial camera 24 to flexibly adjust its height to acquire axial images of the tire 15. The upper industrial camera 26 is fixed on the mounting bracket 25 and can acquire the appearance information of the upper side of the tire 15. The rodless lifting cylinder 27 drives the circumferential industrial camera 28 to move, realizing the acquisition of circumferential images of the tire 15. The lower industrial camera 29 takes pictures of the lower side of the tire 15 through the bottom inspection port 14. With the cooperation of multiple cameras, the appearance of the tire 15 can be inspected 360° without blind spots, leaving no minor defects undetected, greatly improving the comprehensiveness and accuracy of the inspection.
[0025] In this embodiment, the conveying device 11 is provided with two connecting plates 12 on its inner side, and each of the two connecting plates 12 is provided with a symmetrical arc groove 13. The conveying device 11 is also provided with a bottom detection port 14. The upper surface of the conveying device 11 is in rolling connection with the tire 15. The lower end of the conveying device 11 is provided with a bottom mounting bracket 16. A lower industrial camera 29 is fixedly mounted on the bottom mounting bracket 16. The upper end of the lower industrial camera 29 is correspondingly connected to the bottom detection port 14. The plurality of arc grooves 13 are slidably connected to the bottom of their respective conical support rollers 32, the upper ends of the plurality of conical support rollers 32 are connected to their respective mounting bases 31, and the tops pass through the mounting bases 31 and are fixedly connected to the driven wheel 37; the bottom of the mounting bases 31 is rotatably connected to the detection frame 21. The mounting base 31 is equipped with a transmission box 33 on its upper end. The inner side of the upper end of the transmission box 33 is connected to the motor 34. The lower end of the motor 34 is fixedly connected to the rotating wheel 35. The rotating wheel 35 is connected to the driven wheel 37 through the belt 36. Each of the multiple mounting bases 31 is provided with a connector 38 on its outer side, and the connector 38 is connected to the telescopic cylinder 39.
[0026] By adopting the above technical solution, when the tire 15 is working, the telescopic cylinder 39 pushes the mounting base 31 and the conical support roller 32 and other structures. The conical support roller 32 slides in the arc groove 13, which can accurately clamp the tire 15 and achieve stable positioning. The motor 34 is installed in the transmission box 33, which drives the rotating wheel 35, and drives the driven wheel 37 and the conical support roller 32 to rotate through the belt 36, ensuring that the tire 15 rotates smoothly and at a uniform speed during the inspection process, avoiding inspection errors caused by shaking or unstable rotation, and ensuring reliable inspection results. The conveyor 11 automatically conveys the tire 15; the telescopic cylinder 39 automatically positions and clamps the tire 15; the motor 34 automatically drives the tire 15 to rotate; the lifting cylinder 23 and the rodless lifting cylinder 27 automatically adjust the position of the industrial camera for image acquisition; all components operate automatically and in an orderly manner, reducing manual operation, which not only improves the detection efficiency but also reduces labor costs, and can be well adapted to the pace of high-speed production lines.
[0027] The working principle of this utility model is as follows: the tire 15 is placed on the conveying device 11, which realizes the stable conveying of the tire 15. The telescopic cylinder 39 on the detection device 2 controls the mounting base 31 and the connected conical support roller 32 through the connecting piece 38 to position and clamp the tire 15. The motor 34 is started, and the driven wheel 37 and the conical support roller 32 are driven to rotate through the rotating wheel 35 and the belt 36, so as to realize the rotation of the tire 15, which facilitates all-round detection. The lifting cylinder 23 drives the axial industrial camera 24 to rise and fall, acquiring axial images of the tire 15; the upper industrial camera 26 is mounted on the fixed frame 25, acquiring upper images of the tire 15; the rodless lifting cylinder 27 drives the circumferential industrial camera 28 to move, acquiring circumferential images of the tire 15; the lower industrial camera 29 acquires lower images of the tire 15 through the bottom detection port 14; the multi-angle cameras work together to comprehensively acquire the appearance image information of the tire 15. During appearance inspection, the device is equipped with an axial industrial camera 24, an upper industrial camera 26, a circumferential industrial camera 28, and a lower industrial camera 29. The lifting cylinder 23 drives the axial industrial camera 24 to flexibly adjust its height to acquire axial images of the tire 15. The upper industrial camera 26 is fixed on the mounting bracket 25 and can acquire the appearance information of the upper side of the tire 15. The rodless lifting cylinder 27 drives the circumferential industrial camera 28 to move, realizing the acquisition of circumferential images of the tire 15. The lower industrial camera 29 takes pictures of the lower side of the tire 15 through the bottom inspection port 14. With the cooperation of multiple cameras, the appearance of the tire 15 can be inspected 360° without blind spots, leaving no detail undetected, greatly improving the comprehensiveness and accuracy of the inspection. When the tire 15 is working, the telescopic cylinder 39 pushes the mounting base 31 and the conical support roller 32 and other structures. The conical support roller 32 slides in the arc groove 13, which can accurately clamp the tire 15 and achieve stable positioning. The motor 34 is installed in the transmission box 33, which drives the rotating wheel 35, which drives the driven wheel 37 and the conical support roller 32 to rotate through the belt 36. This ensures that the tire 15 rotates smoothly and at a constant speed during the inspection process, avoids inspection errors caused by shaking or unstable rotation, and ensures reliable inspection results. The conveyor 11 automatically conveys the tire 15; the telescopic cylinder 39 automatically completes the positioning and clamping of the tire 15; the motor 34 automatically drives the tire 15 to rotate; the lifting cylinder 23 and the rodless lifting cylinder 27 automatically adjust the position of the industrial camera for image acquisition; all components operate automatically and in an orderly manner, reducing manual operation, which not only improves the detection efficiency but also reduces labor costs and can be well adapted to the pace of high-speed production lines. The acquired images are transmitted to the back-end processing system, where machine vision algorithms, such as edge detection, feature extraction, and defect recognition, are used to analyze and judge the appearance of tire 15, identify whether there are defects such as cracks, bubbles, and uneven wear, and determine the location, type, and severity of the defects.
[0028] 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.
[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A precision tire appearance inspection device based on machine vision, characterized in that: include A tire transmission device (1) is provided with a detection device (2) installed at its upper end; the detection device (2) is provided with four rotating devices (3) arranged in a ring array. The detection device (2) includes a detection frame (21), the bottom of which is fixedly connected to the conveying device (11). The upper surface of the detection frame (21) is provided with four cylinder mounting plates (22) in a ring array. Each cylinder mounting plate (22) is equipped with a telescopic cylinder (39). The top of the detection frame (21) is fixedly connected to a lifting cylinder (23). The end of the lifting cylinder (23) is fixedly connected to an axial industrial camera (24). The upper surface and one side of the detection frame (21) are also fixedly connected to a fixed frame (25) and a rodless lifting cylinder (27), respectively. An upper industrial camera (26) is installed on the fixed frame (25). The bottom of the rodless lifting cylinder (27) is fixedly connected to a circumferential industrial camera (28).
2. The precision tire appearance inspection device based on machine vision according to claim 1, characterized in that: The conveying device (11) is provided with two connecting plates (12) on its inner side. Each of the two connecting plates (12) is provided with a circular arc groove (13) in a symmetrical manner. The conveying device (11) is also provided with a bottom detection port (14).
3. The precision tire appearance inspection device based on machine vision according to claim 2, characterized in that: The upper surface of the conveying device (11) is rolledly connected to the tire (15). The lower end of the conveying device (11) is provided with a bottom mounting bracket (16). A lower industrial camera (29) is fixedly installed on the bottom mounting bracket (16). The upper end of the lower industrial camera (29) is connected to the bottom detection port (14).
4. The precision tire appearance inspection device based on machine vision according to claim 3, characterized in that: The multiple arc grooves (13) are slidably connected to the bottom of their respective conical support rollers (32), the upper ends of the multiple conical support rollers (32) are connected to their respective mounting seats (31), and the tops are fixedly connected to the driven wheel (37) through the mounting seats (31); the bottom of the mounting seats (31) is rotatably connected to the detection frame (21).
5. The machine vision-based precision tire appearance inspection device according to claim 4, characterized in that: The mounting base (31) is equipped with a transmission box (33) at its upper end. The inner side of the upper end of the transmission box (33) is connected to the motor (34). The lower end of the motor (34) is fixedly connected to the rotating wheel (35). The rotating wheel (35) is connected to the driven wheel (37) via a belt (36).
6. The precision tire appearance inspection device based on machine vision according to claim 5, characterized in that: Each of the multiple mounting bases (31) is provided with a connector (38) on its outer side, and the connector (38) is connected to the telescopic cylinder (39).