Camera adjusting device for steel pipe outer surface defect detection

Abstract

The utility model relates to a camera adjusting device for detecting defects on the outer surface of a steel pipe, which comprises a mounting main board, and the mounting main board is provided with a through hole through which a detected pipe bar can pass; camera detection mechanisms are mounted on the mounting main board, and the multiple camera detection mechanisms are arranged in the circumferential direction of the passing hole; the camera detection mechanism comprises an industrial camera with a lens, electric sliding tables and a camera posture adjusting assembly used for adjusting the industrial camera, the camera posture adjusting assembly is installed on the electric sliding tables, the industrial camera is installed on the camera posture adjusting assembly, and the central axes of the multiple electric sliding tables all pass through the circle center of the through hole. The camera adjusting device is ingenious in structure, convenient to operate and capable of adapting to pipes and bars of different specifications, the posture angle of each camera can be independently adjusted, the pipes and the bars are imaged in the middle of the view field of each camera, and therefore the accuracy of a detection result is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of metal surface detection, in particular to a camera adjustment device for detecting defects on the outer surface of a steel pipe. Background Art

[0002] Tubes and bars are important industrial materials, typically referring to long, strips of metal with a specific length and cross-sectional shape. "Tube" refers to pipes, while "bar" refers to rods. Tubes are hollow, seamless, long steel strips widely used in fluid transportation, structural components, and mechanical parts. Bars, on the other hand, are simple, straight-line metals with a broad application in industries such as construction, machinery, automotive, and shipbuilding. 70% of bar use is in construction, with the remainder used in shafts, bolts, nuts, anchor chains, and springs.

[0003] The production process for tubes and bars typically includes extrusion, rolling, stretching, heat treatment, and finishing. Extrusion involves pressing a metal ingot through an extruder to form it; rolling involves using a rolling mill to form the material into the desired shape; stretching involves passing the billet through a die and applying tension to change its shape and dimensions; heat treatment, including annealing, improves the material's structure and properties; and finishing involves trimming, straightening, and surface treatment to ensure dimensional accuracy and surface quality.

[0004] Tubes and bars are categorized by cross-sectional shape into round, square, hexagonal, and structural steel bar shapes, with round cross-section being the most common. Domestically and internationally, the cross-sectional diameter of bars typically ranges from 9 to 300 mm, while domestic bar workshops typically produce bars with cross-sectional diameters ranging from 10 to 50 mm.

[0005] During the mass production of tubes and bars, quality control of their outer surface is particularly important. Traditional inspection methods rely primarily on manual visual inspection, which is not only inefficient but also susceptible to operator experience and fatigue, leading to missed inspections or misjudgments.

[0006] In recent years, with the advancement of machine vision technology, the use of industrial cameras to capture surface images of pipes and bars, followed by algorithmic analysis to identify defects, has gradually replaced traditional methods, demonstrating greater detection efficiency and accuracy. However, the camera imaging devices in most existing visual inspection systems for pipe and bar defects have poor adaptability to pipes and bars of varying specifications. Furthermore, on-site production line layouts can cause misalignment between the axis of the pipe and bar and the axis of the camera imaging system due to factors such as structural installation errors, layout errors, and the straightness of the pipe and bar itself. This can cause the steel pipe to be out of the center of the field of view of multiple cameras, resulting in inconsistent or ineffective imaging. Utility Model Content

[0007] In order to overcome the defects in the above-mentioned prior art, the utility model aims to provide a camera adjustment device for detecting defects on the outer surface of steel pipes. The camera adjustment device has an ingenious structure, is easy to operate, can adapt to pipes and bars of different specifications, and each camera can independently adjust the posture angle so that the pipe and bar are imaged in the middle position of each camera's field of view, thereby ensuring the accuracy of the detection results, enhancing the user experience, and being conducive to the promotion and application of the above-mentioned camera adjustment device for detecting defects on the outer surface of steel pipes in the market.

[0008] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions: a camera adjustment device for detecting defects on the outer surface of a steel pipe, comprising a mounting mainboard, the mounting mainboard being provided with a through hole for the pipe and rod to be tested to pass through; a camera detection mechanism is mounted on the mounting mainboard, and a plurality of the camera detection mechanisms are arranged along the circumference of the through hole; the camera detection mechanism comprises an industrial camera with a lens, an electric slide and a camera attitude adjustment assembly for adjusting the industrial camera, the camera attitude adjustment assembly is mounted on the electric slide, the industrial camera is mounted on the camera attitude adjustment assembly, and the central axes of the plurality of electric slides all pass through the center of the through hole.

[0009] As a preferred solution of the present invention, the camera posture adjustment component includes an L-shaped adjustment plate and an adjustment knob, the L-shaped adjustment plate includes an adjustment part one and an adjustment part two, both the adjustment part one and the adjustment part two are provided with an adjustment groove, the adjustment groove is a waist-shaped groove and is arranged in an arc shape, and the adjustment knob is used to be fixed in the adjustment groove to fix the position of the industrial camera.

[0010] As a preferred solution of the present invention, a camera mounting base is installed at the bottom of the industrial camera, and positioning pin holes are provided at positions corresponding to the sides of the mounting base and the two sides of the adjustment part, and positioning pins are inserted into the positioning pin holes.

[0011] As a preferred solution of the present invention, the number of the adjustment slots located on the second adjustment portion is two, and the two adjustment slots are used to limit the adjustment angle of the L-shaped adjustment plate.

[0012] As a preferred solution of the present invention, the angle adjustment range of the L-shaped adjustment plate is -20° to +20°.

[0013] As a preferred solution of the present invention, the number of the adjustment slots located on the adjustment portion 1 is two, and the two adjustment slots are used to limit the adjustment angle of the camera mounting seat.

[0014] As a preferred solution of the present invention, the angle adjustment range of the camera mounting seat is -20° to +20°.

[0015] As a preferred solution of the present invention, a mounting base is installed at the bottom of the L-shaped adjustment plate, and the mounting base is installed on the electric slide.

[0016] As a preferred solution of the present invention, the electric slide includes a drive motor, a ball screw and a moving block, the ball screw is installed at the output end of the drive motor, the moving block is installed at the ball screw, and the mounting base is installed at the moving block.

[0017] As a preferred solution of the present invention, the through hole is opened at the center position of the mounting main board, and the plurality of camera detection mechanisms are arranged equidistantly along the circumference of the through hole.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: a camera adjustment device for detecting defects on the outer surface of a steel pipe in the present invention has an ingenious structure, and the pipe and rod to be tested passes through the through hole of the mounting main board, and then through the camera detection mechanism arranged around the through hole, and there are multiple camera detection mechanisms. The lens of the industrial camera can be adjusted through the camera posture adjustment component, and each industrial camera can adjust its posture angle so that the pipe and rod are imaged in the middle position of its field of view, that is, completely covering the inspected surface of the pipe and rod, thereby ensuring the accuracy of the detection result, and the through hole can adapt to pipes and rods of different specifications, and has a wide range of applications, thereby enhancing the user experience, which is conducive to the promotion and application of the above-mentioned camera adjustment device for detecting defects on the outer surface of a steel pipe in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a camera adjustment device for detecting defects on the outer surface of a steel pipe in an embodiment of the present utility model;

[0020] Figure 2 This is a structural schematic diagram of a camera detection mechanism in a camera adjustment device for detecting defects on the outer surface of a steel pipe according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the assembly of an industrial camera and a camera posture adjustment component in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the position of the adjustment knob in the embodiment of the utility model;

[0023] Figure 5 Schematic diagram of the adjustment angle of the L-shaped adjustment plate in the embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the adjustment angle of the camera mounting base in the embodiment of the present utility model;

[0025] Figure 7 This is a schematic structural diagram of an electric slide in a camera adjustment device for detecting defects on the outer surface of a steel pipe according to an embodiment of the present invention;

[0026] Figure 8 It is a structural schematic diagram of an L-shaped adjustment plate in a camera adjustment device for detecting defects on the outer surface of a steel pipe in an embodiment of the present utility model.

[0027] Figure markings: 1. Mounting main board; 1-1. Through hole; 2. Camera detection mechanism; 2-1. Lens; 2-2. Industrial camera; 2-3. Electric slide; 2-3-1. Driving motor; 2-3-2. Ball screw; 2-3-3. Moving block; 2-4. Mounting base plate; 2-5. L-shaped adjustment plate; 2-5-1. Adjustment part one; 2-5-2. Adjustment part two; 2-5-3. Adjustment slide; 2-5-4. Positioning pin hole; 2-6. Camera mounting seat; 2-7. Adjustment knob; 3. Tube and rod. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments illustrated in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0030] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings.

[0031] like Figures 1 to 8As shown, a camera adjustment device for detecting defects on the outer surface of steel pipes is primarily composed of a mounting mainboard 1 and a camera detection mechanism 2. The mounting mainboard 1 is flat and is designed to facilitate the installation of the camera detection mechanism 2 and facilitate the passage of the pipe, rod, or bar 3 being tested through the mounting mainboard 1, so that the surface to be tested of the pipe, rod, or bar 3 is completely covered by the camera detection mechanism 2. To allow the pipe, rod, or bar 3 to pass through unimpeded and ensure a smooth inspection process, the mounting mainboard 1 is provided with a through hole 1-1 for the pipe, rod, or bar 3 to pass through. The through hole 1-1 is located at the center of the mounting mainboard 1, helping to ensure the positioning accuracy of the pipe, rod, or bar 3 during inspection. The center position is the central point of the mounting mainboard 1, which maintains the stability and consistency of the pipe, rod, or bar 3 during inspection. The central through hole 1-1 also makes it easier for the subsequent camera detection mechanism 2 to align with the pipe, rod, or bar 3, allowing for accurate measurement and inspection. To inspect the surface of the pipe or bar 3, in this embodiment, a camera inspection mechanism 2 is mounted on the mounting mainboard 1. Multiple camera inspection mechanisms 2 are equidistantly spaced along the circumference of the through-hole 1-1. Specifically, four camera inspection mechanisms 2 are provided in this embodiment to ensure that the inspection angle of the camera inspection mechanism 2 fully covers the inspected pipe or bar 3. Each camera inspection mechanism 2 comprises an industrial camera 2-2 with a lens 2-1, an electric slide 2-3, and a camera attitude adjustment assembly for adjusting the inspection angle of the industrial camera 2-2. The camera attitude adjustment assembly is mounted on the electric slide 2-3 and can adjust the position of the camera attitude adjustment assembly in the front-to-back direction on the electric slide 2-3. The front-to-back direction refers to the distance from the inspected pipe or bar 3, with front being close to the pipe or bar 3 and far being far away from the pipe or bar 3. The industrial camera 2-2 is mounted on the camera attitude adjustment assembly. The camera attitude adjustment assembly can be used to adjust the angle of the industrial camera 2-2, and thus the angle of the lens 2-1, to meet different inspection requirements. In order to ensure that the viewing angles of the four industrial cameras 2 - 2 can evenly cover the pipe and rod 3 to be measured, the central axes of the four electric slides 2 - 3 in this embodiment all pass through the center of the through hole 1 - 1.

[0032] The camera posture adjustment assembly in this embodiment includes an L-shaped adjustment plate 2-5 and an adjustment knob 2-7. The L-shaped adjustment plate 2-5 includes an adjustment portion 1 2-5-1 and an adjustment portion 2-5-2. The adjustment portion 1 2-5-1 is a portion perpendicular to the electric slide 2-3, and the adjustment portion 2 2-5-2 is a portion parallel to the electric slide 2-3. In order to adjust the angle of the industrial camera 2-2 and fix the position of the industrial camera 2-2, both the adjustment portion 1 2-5-1 and the adjustment portion 2 2-5-2 are provided with an adjustment slot 2-5-3. The adjustment slot 2-5-3 is a waist-shaped slot and is arranged in an arc shape. The adjustment knob 2-7 is used to be fixed in the adjustment slot 2-5-3 to fix the position of the industrial camera 2-2.

[0033] In order to facilitate the adjustment of the angle of the above-mentioned industrial camera 2-2 and ensure its stability during installation and use, a camera mounting base 2-6 is installed at the bottom of the above-mentioned industrial camera 2-2, and positioning pin holes 2-5-4 are provided at the positions corresponding to the sides of the above-mentioned mounting base 2-6 and the sides of the above-mentioned adjustment part 2-5-2. A positioning pin is inserted in the above-mentioned positioning pin hole 2-5-4. When the above-mentioned industrial camera 2-2 needs to be adjusted, the positioning pin can also serve as a rotating shaft, thereby reducing the difficulty of adjustment.

[0034] like Figure 8 As shown, in order to improve the accuracy, stability and reliability of the angle adjustment of the L-shaped adjustment plate 2-5, two adjustment slots 2-5-3 are provided on the adjustment portion 2-5-2 in this embodiment. The two adjustment slots 2-5-3 here can more accurately control the adjustment angle of the L-shaped adjustment plate 2-5, and the dual adjustment slots 2-5-3 design allows the L-shaped adjustment plate 2-5 to move on two independent axes, namely, the adjustment knobs 2-7 provided in the adjustment slots 2-5-3, thereby providing more precise angle adjustment. The two adjustment slots 2-5-3 can also provide more stable support, ensuring that the L-shaped adjustment plate 2-5 will not deviate or vibrate unnecessarily during the adjustment process, thereby ensuring the stability of the industrial camera 2-2 during the adjustment process and reducing the probability of damage. The two adjustment slots 2-5-3 can define the maximum and minimum angle limits of the L-shaped adjustment plate 2-5. The center line of the adjustment slot 2-5-3 is the 0° position. Its function is to ensure that the L-shaped adjustment plate 2-5 can only move within a safe adjustment angle range to prevent damage or failure that may be caused by excessive adjustment. Figure 5 As shown, in this embodiment, the angle adjustment range of the L-shaped adjustment plate 2-5 is limited to -20° to +20° by the two adjustment slots 2-5-3. Figure 8As shown, in order to improve the accuracy, stability and reliability of the camera mount 2-6 when adjusting the angle, two additional adjustment slots 2-5-3 are provided at the adjustment portion 1 2-5-1 in this embodiment. The two adjustment slots 2-5-3 are used to limit the adjustment angle of the camera mount 2-6. Specifically, the angle adjustment range of the camera mount 2-6 is -20° to +20°. The angle adjustment range of the L-shaped adjustment plate 2-5 and the camera mount 2-6 is between -20° and +20°. Within the above angle range, the operator is allowed to make detailed adjustments to achieve the required accuracy, which can effectively reduce the difficulty of adjustment and improve the efficiency of adjustment.

[0035] In order to further ensure stability during installation and use, a mounting base plate 2-4 is installed at the bottom of the above-mentioned L-shaped adjustment plate 2-5. The mounting base plate 2-4 plays a supporting role here and can avoid wear caused by directly installing the above-mentioned L-shaped adjustment plate 2-5 on the above-mentioned electric slide 2-3. The above-mentioned mounting base plate 2-4 is installed on the above-mentioned electric slide 2-3.

[0036] The above-mentioned electric slide 2-3 in this embodiment is mainly composed of a driving motor 2-3-1, a ball screw 2-3-2 and a moving block 2-3-3. The above-mentioned ball screw 2-3-2 is installed on the output end of the above-mentioned driving motor 2-3-1, the above-mentioned moving block 2-3-3 is installed on the above-mentioned ball screw 2-3-2, and the above-mentioned mounting base plate 2-4 is installed on the above-mentioned moving block 2-3-3. The position of the above-mentioned mounting base plate 2-4 is driven to move by the moving block 2-3-3, thereby driving the industrial camera 2-2 to adjust its position.

[0037] The camera adjustment device for detecting defects on the outer surface of a steel pipe in this embodiment can set the position of the camera detection mechanism 2 according to the actual position of the pipe or bar 3 to be detected. The specific adjustment method is: when adjusting, turn the above-mentioned adjustment knob 2-7 and slide the above-mentioned adjustment knob 2-7 in the adjustment slide 2-5-3. The two adjustment slides 2-5-3 on the adjustment part 1 2-5-1 can adjust the pitch angle of the industrial camera 2-2, and the two adjustment slides 2-5-3 on the adjustment part 2-5-2 can adjust the azimuth angle of the industrial camera 2-2, specifically the left and right angles. The electric slide 2-3 can then be used to change the pitch angle of the industrial camera 2-2. The front and rear positions of the industrial camera 2-2 can be adjusted in six directions, namely, front and rear, left and right, and up and down, so that the pipe and rod 3 to be tested is placed in the center of the field of view of each industrial camera 2-2, completely covering the tested surface of the pipe and rod, and the closer the lens 2-1 is to the center of the pipe and rod 3, the smaller the distortion, so the accuracy of the surface defect detection of the rod or pipe can be effectively improved, thereby ensuring the accuracy of the test results, and the hole 1-1 can be adapted to pipes and rods of different specifications, with a wide range of applications, thereby enhancing the user experience, which is conducive to the promotion and application of the above-mentioned camera adjustment device for steel pipe outer surface defect detection in the market.

[0038] The above description of the disclosed embodiments will enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

[0039] Although this article frequently uses the following terms: 1. Mounting mainboard; 1-1. Through hole; 2. Camera detection mechanism; 2-1. Lens; 2-2. Industrial camera; 2-3. Electric slide; 2-3-1. Driving motor; 2-3-2. Ball screw; 2-3-3. Moving block; 2-4. Mounting base; 2-5. L-shaped adjustment plate; 2-5-1. Adjustment section 1; 2-5-2. Adjustment section 2; 2-5-3. Adjustment slide; 2-5-4. Positioning pin hole; 2-6. Camera mounting base; 2-7. Adjustment knob; 3. Pipe and rod, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A camera adjustment device for detecting defects on the outer surface of a steel pipe, characterized in that: The invention comprises a mounting main board (1), wherein the mounting main board (1) is provided with a through hole (1-1) for a pipe or rod to be tested (3) to pass through; a camera detection mechanism (2) is mounted on the mounting main board (1), and a plurality of the camera detection mechanisms (2) are arranged along the circumference of the through hole (1-1); the camera detection mechanism (2) comprises an industrial camera (2-2) with a lens (2-1), an electric slide (2-3) and a camera attitude adjustment component for adjusting the industrial camera (2-2), wherein the camera attitude adjustment component is mounted on the electric slide (2-3), and the industrial camera (2-2) is mounted on the camera attitude adjustment component, and the central axes of the plurality of electric slides (2-3) all pass through the center of the through hole (1-1).

2. A camera adjustment device for detecting defects on the outer surface of a steel pipe according to claim 1, characterized in that: The camera posture adjustment component comprises an L-shaped adjustment plate (2-5) and an adjustment knob (2-7); the L-shaped adjustment plate (2-5) comprises an adjustment portion 1 (2-5-1) and an adjustment portion 2 (2-5-2); an adjustment slot (2-5-3) is provided on both the adjustment portion 1 (2-5-1) and the adjustment portion 2 (2-5-2); the adjustment slot (2-5-3) is a waist-shaped slot and is arranged in an arc shape; the adjustment knob (2-7) is used to be fixed in the adjustment slot (2-5-3) to achieve fixed position of the industrial camera (2-2).

3. The camera adjustment device for detecting defects on the outer surface of a steel pipe according to claim 2, characterized in that: A camera mounting seat (2-6) is installed at the bottom of the industrial camera (2-2), and positioning pin holes (2-5-4) are provided at positions corresponding to the sides of the camera mounting seat (2-6) and the sides of the second adjustment part (2-5-2), with positioning pins inserted into the positioning pin holes (2-5-4).

4. A camera adjustment device for detecting defects on the outer surface of a steel pipe according to claim 3, characterized in that: There are two adjusting slots (2-5-3) located on the second adjusting portion (2-5-2), and the two adjusting slots (2-5-3) are used to limit the adjustment angle of the L-shaped adjusting plate (2-5).

5. The camera adjustment device for detecting defects on the outer surface of a steel pipe according to claim 4, characterized in that: The angle adjustment range of the L-shaped adjustment plate (2-5) is -20° to +20°.

6. The camera adjustment device for detecting defects on the outer surface of a steel pipe according to claim 4, characterized in that: There are two adjusting slots (2-5-3) located on the adjusting portion 1 (2-5-1), and the two adjusting slots (2-5-3) are used to limit the adjustment angle of the camera mounting seat (2-6).

7. The camera adjustment device for detecting defects on the outer surface of a steel pipe according to claim 6, characterized in that: The camera mounting seat (2-6) has an angle adjustment range of -20° to +20°.

8. The camera adjustment device for detecting defects on the outer surface of a steel pipe according to claim 2, characterized in that: A mounting base plate (2-4) is installed at the bottom of the L-shaped adjustment plate (2-5), and the mounting base plate (2-4) is installed on the electric slide (2-3).

9. The camera adjustment device for detecting defects on the outer surface of a steel pipe according to claim 8, characterized in that: The electric slide (2-3) includes a driving motor (2-3-1), a ball screw (2-3-2) and a moving block (2-3-3), wherein the ball screw (2-3-2) is mounted on the output end of the driving motor (2-3-1), the moving block (2-3-3) is mounted on the ball screw (2-3-2), and the mounting base (2-4) is mounted on the moving block (2-3-3).

10. The camera adjustment device for detecting defects on the outer surface of a steel pipe according to claim 1, characterized in that: The through hole (1-1) is opened at the center of the mounting main board (1), and a plurality of camera detection mechanisms (2) are arranged at equal distances along the circumference of the through hole (1-1).

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