Cylinder surface defect detection device

Abstract

The utility model relates to the technical field of surface coating detection, in particular to a cylinder surface defect detection device which comprises a workpiece clamp, a driving assembly, a light source assembly and a camera assembly, the workpiece clamp comprises a supporting seat and a mounting plate, a cylinder workpiece to be detected is mounted on the mounting plate, and the workpiece is rotationally connected to the mounting plate; the mounting plate is erected on the supporting seat; the driving assembly comprises a power piece and a driving shaft, and the driving shaft is erected on the supporting base and rotationally connected to the supporting base. The light source assembly is arranged on the supporting seat; the camera assembly is arranged below the workpiece clamp. The power piece is started and drives the driving shaft to rotate, and the driving shaft rotates and then drives the workpiece to rotate. And meanwhile, the light source assembly is turned on to light the workpiece, the camera assembly starts photographing and scanning, and the surface of the whole cylindrical workpiece is scanned and detected. According to the cylinder surface coating detection device, photographing detection of one camera is achieved by rotating the workpiece, installation and debugging are easy, and the detection efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of surface coating detection, and particularly relates to a device for detecting surface defects of a cylinder. Background Art

[0002] Coating material technology is widely used in various industries such as automotive parts manufacturing and aerospace. In actual use, it is necessary to detect the defects on the coating surface, mainly to detect defective products such as scratches, knocks, dents, and dirt on the surface of the coated workpieces, and to promptly screen out defective parts.

[0003] At present, some materials are cylindrical, and the coating material is coated on the cylindrical surface. Traditional equipment uses area array cameras to take pictures by arranging multiple cameras around the cylinder at 360 degrees, which is troublesome in installation and debugging and has low detection efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a device for detecting the surface coating of a cylinder to improve the detection efficiency of the existing cylinder coating.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is to provide a device for detecting surface defects of a cylinder, including a workpiece fixture, a driving component, a light source component, and a camera component. The workpiece fixture includes a support base and a mounting plate. The mounting plate is provided with a cylindrical workpiece to be detected, and the workpiece is rotatably connected to the mounting plate. The mounting plate is mounted on the support base. The driving component includes a power component and a driving shaft. The driving shaft is mounted on the support base and rotatably connected to the support base. The power component drives the driving shaft to rotate, and the side surface of the driving shaft can be attached to the side surface of the workpiece to drive the workpiece to rotate. The light source component is arranged on the support base and illuminates the workpiece. The camera component is arranged below the workpiece fixture and takes pictures of the surface of the workpiece.

[0006] Further, the support base includes a bottom plate and two side plates. The two side plates are fixed on the bottom plate. The mounting plate and the driving shaft are arranged between the two side plates. The bottom plate is provided with an avoidance hole for light to pass through.

[0007] Further, the light source component includes a light source adjustment mechanism and a light source body. The light source adjustment mechanism is arranged on the bottom plate. The light source body is connected to the light source adjustment mechanism. The light source body is located at a position on one side directly below the workpiece.

[0008] Further, the light source adjustment mechanism includes a hinge seat and a hinge head. The hinge seat is slidably connected to the bottom plate. The hinge head is hinged to the hinge seat. The other end of the hinge head is connected to the light source body.

[0009] Further, a mounting shaft is rotatably connected to the mounting plate. The mounting shaft is spaced apart from the driving shaft, and the position between them allows the light of the camera assembly to pass through. The workpiece is located at the position between the mounting shaft and the driving shaft.

[0010] Further, the workpiece fixture further includes a test stand, which is detachably mounted above the mounting plate. A workpiece is detachably mounted on the test stand. After the test stand is mounted, the workpiece is located at the position between the mounting shaft and the driving shaft and abuts against both of them.

[0011] Further, an adjusting plate is fixed on the bottom plate, and a limiting sliding groove is provided on the adjusting plate. The hinged seat is slidably connected to the adjusting plate.

[0012] Further, the camera assembly includes a camera adjustment mechanism and a camera body. The camera adjustment mechanism is arranged below the bottom plate, the camera body is connected to the camera adjustment mechanism, and the camera adjustment mechanism adjusts the camera body to be directly below the workpiece.

[0013] Further, the light source body adopts a linear light source, and the camera body adopts a line array camera.

[0014] Further, the cylindrical surface defect detection device further includes a control system, which is electrically connected to the driving component, the light source component and the camera component.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. Install the cylindrical workpiece to be detected on the mounting plate, and adjust the mounting plate so that the side surface of the workpiece fits and abuts against the side surface of the driving shaft. Start the power component, and the power component drives the driving shaft to rotate. After the driving shaft rotates, it drives the workpiece to rotate. At the same time, the light source component lights up to illuminate the workpiece, and the camera component starts to take pictures and scan to scan and detect the surface of the entire cylindrical workpiece. In the cylindrical surface coating detection device in this application, the rotation of the workpiece realizes the photographing detection of one camera, the installation and debugging are simple, and the detection efficiency is higher.

[0017] 2. The light source component includes a light source adjustment mechanism and a light source body. The light source adjustment mechanism is arranged on the bottom plate, the light source body is connected to the light source adjustment mechanism, and the light source body is located at one side position directly below the workpiece, without interfering with the photographing of the camera component. When replacing workpieces of different sizes and models, the position of the light source body can be adjusted through the light source adjustment mechanism, and better lighting can be provided for the detection position of the workpiece.

[0018] 3. A mounting shaft is rotatably connected to the mounting plate. The workpiece is located between the mounting shaft and the driving shaft and abuts against both of them. After the workpiece is subjected to the abutting force of the driving shaft, the mounting shaft further fixes and supports the workpiece, making the workpiece not easy to shake and facilitating the stable rotation of the workpiece. The mounting shaft and the driving shaft are arranged at intervals, and the position between them allows the light of the camera assembly to pass through. The workpiece is located at the position between the mounting shaft and the driving shaft, which is convenient for the camera assembly to take pictures and detect.

[0019] 5. The light source body adopts a linear light source, and the camera body adopts a line array camera, which can make the surface of the cylindrical workpiece to be imaged as a line, realizing efficient scanning and detection. Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a cylindrical surface defect detection device provided by an embodiment of the present invention;

[0022] Figure 2 It is an overall structural schematic diagram of a cylindrical surface defect detection device provided by an embodiment of the present invention;

[0023] Figure 3 It is a side view of a cylindrical surface defect detection device provided by an embodiment of the present invention, in which the side plate is not shown.

[0024] Explanation of the Reference Numerals:

[0025] 1. Workpiece fixture; 11. Support seat; 111. Bottom plate; 112. Side plate; 113. Avoidance hole; 12. Mounting plate; 13. Mounting shaft; 2. Driving assembly; 21. Power member; 22. Driving shaft; 3. Light source assembly; 31. Light source adjustment mechanism; 311. Hinge seat; 312. Hinge head; 313. Adjusting plate; 32. Light source body; 4. Camera assembly; 41. Camera adjustment mechanism; 42. Camera body; 5. Workpiece. Detailed Embodiments

[0026] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work belong to the scope of protection of the present utility model.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] Referring to Figures 1 to 3 , as a cylindrical surface defect detection device provided by an embodiment of the present utility model, it includes a workpiece fixture 1, a driving component 2, a light source component 3, and a camera component 4. The workpiece fixture 1 includes a support base 11 and a mounting plate 12. A cylindrical workpiece 5 to be detected is mounted on the mounting plate 12. The workpiece 5 is rotatably connected to the mounting plate 12, and the mounting plate 12 is mounted on the support base 11; the driving component 2 includes a power component 21 and a driving shaft 22. The driving shaft 22 is mounted on the support base and rotatably connected to the support base 11. The power component 21 drives the driving shaft 22 to rotate. The side surface of the driving shaft 22 can be attached to the side surface of the workpiece 5 and drive the workpiece 5 to rotate; the light source component 3 is arranged on the support base 11 and illuminates the workpiece 5; the camera component 4 is arranged below the workpiece fixture 1 and takes pictures of the surface of the workpiece 5.

[0031] Install the cylindrical workpiece 5 to be detected on the mounting plate 12, and adjust the mounting plate 12 so that the side surface of the workpiece 5 is in close contact with the side surface of the drive shaft 22. Start the power component 21, and the power component 21 drives the drive shaft 22 to rotate. After the drive shaft 22 rotates, it drives the workpiece 5 to rotate. At the same time, the light source assembly 3 lights up to illuminate the workpiece 5, and the camera assembly 4 starts to take pictures and scan to detect the surface of the entire cylindrical workpiece 5. The cylindrical surface coating detection device in this application realizes the photographing detection of a camera by rotating the workpiece 5, has simple installation and debugging, and higher detection efficiency.

[0032] Specifically, the support base 11 includes a bottom plate 111 and two side plates 112. The two side plates 112 are fixed on the bottom plate 111. An installation plate 12 and a drive shaft 22 are arranged between the two side plates 112. The bottom plate 111 is provided with an avoidance hole 113 for light to pass through. The avoidance hole 113 is directly below the workpiece 5. The light source assembly 3 includes a light source adjustment mechanism 31 and a light source body 32. The light source adjustment mechanism 31 is arranged on the bottom plate 111, and the light source body 32 is connected to the light source adjustment mechanism 31. The light source body 32 is located on one side directly below the workpiece 5 without interfering with the shooting of the camera assembly 4. When replacing workpieces 5 of different sizes and models, the position of the light source body 32 can be adjusted through the light source adjustment mechanism 31 to better illuminate the detection position of the workpiece 5. In this embodiment, the light source adjustment mechanism 31 includes a hinge seat 311 and a hinge head 312. The hinge seat 311 is slidably connected to the bottom plate 111, the hinge head 312 is hinged to the hinge seat 311, and the other end of the hinge head 312 is connected to the light source body 32. Among them, an adjustment plate 313 is fixed on the bottom plate 111, and a limit sliding groove is provided on the adjustment plate 313. The bottom of the hinge seat 311 is embedded in the limit sliding groove and is slidably connected to the adjustment plate 313. The slid hinge seat 311 can be locked and fixed. The hinge head 312 is hinged at the top position of the hinge part.

[0033] As a variable embodiment, a telescopic cylinder is fixed on the bottom plate 111, and the output end of the telescopic cylinder is fixed to the bottom end of the hinge seat 311. The telescopic cylinder can push the hinge seat 311 to slide on the bottom plate 111.

[0034] Furthermore, a mounting shaft 13 is rotatably connected to the mounting plate 12. The mounting shaft 13 and the drive shaft 22 are arranged at intervals, and the position between them allows the light of the camera assembly 4 to pass through. The workpiece 5 is located between the mounting shaft 13 and the drive shaft 22.

[0035] Specifically, a mounting shaft 13 is rotatably connected to the mounting plate 12. The workpiece 5 is located between the mounting shaft 13 and the driving shaft 22 and is in contact with both. After the workpiece 5 receives the pressing force from the driving shaft 22, the mounting shaft 13 plays a role in further fixedly supporting the workpiece 5, making the workpiece 5 not easy to shake and facilitating the stable rotation of the workpiece 5. The mounting shaft 13 and the driving shaft 22 are arranged at intervals, and the gap between them allows the light of the camera assembly 4 to pass through. The workpiece 5 is located between the mounting shaft 13 and the driving shaft 22, which is convenient for the camera assembly 4 to take pictures and detect. In this embodiment, the workpiece fixture 1 further includes a test stand, which is detachably mounted above the mounting plate 12. The workpiece 5 is detachably mounted on the test stand. After the test stand is installed, the workpiece 5 is located between the mounting shaft 13 and the driving shaft 22 and is in contact with both. When installing the workpiece 5, the test stand can be removed first, and then the workpiece 5 can be installed at the designated position of the test stand. Subsequently, the test stand is installed on the mounting plate 12, so that the workpiece 5 is in contact and abutted against the driving shaft 22 and the mounting shaft 13. At this time, the detection work can be carried out.

[0036] Further, the camera assembly 4 includes a camera adjustment mechanism 41 and a camera body 42. The camera adjustment mechanism 41 is arranged below the bottom plate 111, the camera body 42 is connected to the camera adjustment mechanism 41, and the camera adjustment mechanism 41 adjusts the camera body 42 to be directly below the workpiece 5.

[0037] Specifically, the light source body 32 uses a linear light source, and the camera body 42 uses a line array camera, which can make the surface of the cylindrical workpiece 5 to be photographed form a line image, realizing efficient scanning and detection. The cylindrical surface defect detection device further includes a control system, which is electrically connected to the driving component 2, the light source component 3 and the camera component 4. The control system includes a PCL controller, an image analysis server and an encoder. The encoder can control the image acquisition of the camera body 42. Among them, the PCL controller issues the type of the workpiece 5 and the product ID model of the workpiece 5. After the camera body 42 and the encoder receive the signal, they start to perform scanning and detection. The image analysis system compares the detected image with the uploaded image to identify the workpiece 5 with surface defects. The encoder is also electrically connected to the power component 21. The power component 21 uses a motor, which can make the rotation of the motor output a stable code, and can avoid the unstable output during the start and stop of the motor speed. The surface material of the driving shaft 22 should be selected with a suitable surface friction coefficient to avoid slipping when the driving shaft 22 drives the cylindrical workpiece 5.

[0038] The use process of the cylindrical surface defect detection device in this embodiment is as follows:

[0039] Remove the test fixture from the mounting plate 12, install the cylindrical workpiece 5 to be detected on the test fixture, and then install the test fixture on the mounting plate 12. Adjust the test fixture, the light source adjustment mechanism 31 and the camera adjustment mechanism 41 so that the side surface of the workpiece 5 is in close contact with the side surfaces of the drive shaft 22 and the mounting shaft 13, so that the light source body 32 can illuminate the workpiece 5, and the camera is facing the workpiece 5 and can effectively capture the surface of the workpiece 5. After the above adjustments are completed, adjust and start the power member 21, and the power member 21 drives the drive shaft 22 to rotate. After the drive shaft 22 rotates, it drives the workpiece 5 to rotate. At the same time, the light source assembly 3 lights up to illuminate the workpiece 5, and the camera assembly 4 starts to take pictures and scan to detect the surface of the entire cylindrical workpiece 5. The cylindrical surface coating detection device in the present application realizes the photographing detection of a camera by rotating the workpiece 5, has simple installation and debugging, and higher detection efficiency.

[0040] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A cylindrical surface defect detection device, characterized in that, Comprising: A workpiece fixture (1), including a support base (11) and a mounting plate (12), with a cylindrical workpiece (5) to be detected mounted on the mounting plate (12). The workpiece (5) is rotatably connected to the mounting plate (12), and the mounting plate (12) is mounted on the support base (11); A driving component (2), including a power member (21) and a driving shaft (22). The driving shaft (22) is mounted on the support base (11) and rotatably connected to the support base (11). The power member (21) drives the driving shaft (22) to rotate, and the side surface of the driving shaft (22) can be attached to the side surface of the workpiece (5) to drive the workpiece (5) to rotate; A light source component (3), provided on the support base (11) to illuminate the workpiece (5); A camera component (4), provided below the workpiece fixture (1) to take pictures of the surface of the workpiece (5).

2. The cylinder surface defect detection device according to claim 1, wherein, The support base (11) includes a bottom plate (111) and two side plates (112). The two side plates (112) are fixed on the bottom plate (111), and the mounting plate (12) and the driving shaft (22) are mounted between the two side plates (112). An avoidance hole (113) for light to pass through is provided on the bottom plate (111).

3. The cylinder surface defect detection device according to claim 2, wherein The light source component (3) includes a light source adjustment mechanism (31) and a light source body (32). The light source adjustment mechanism (31) is arranged on the bottom plate (111), and the light source body (32) is connected to the light source adjustment mechanism (31). The light source body (32) is located at a position on one side directly below the workpiece (5).

4. The cylinder surface defect detection device according to claim 3, characterized in that, The light source adjustment mechanism (31) includes a hinge seat (311) and a hinge head (312). The hinge seat (311) is slidably connected to the bottom plate (111), the hinge head (312) is hinged to the hinge seat (311), and the other end of the hinge head (312) is connected to the light source body (32).

5. The cylinder surface defect detection device according to claim 1, characterized in that A mounting shaft (13) is rotatably connected to the mounting plate (12). The mounting shaft (13) and the driving shaft (22) are arranged at intervals, and the position between them allows the light of the camera component (4) to pass through. The workpiece (5) is located between the mounting shaft (13) and the driving shaft (22).

6. The cylinder surface defect detection device according to claim 5, characterized in that, The workpiece fixture (1) further includes a test stand, which is detachably mounted above the mounting plate (12). A workpiece (5) is detachably mounted on the test stand. After the test stand is mounted, the workpiece (5) is located between the mounting shaft (13) and the driving shaft (22) and abuts against both of them.

7. The cylinder surface defect detection device according to claim 4, characterized in that, An adjusting plate (313) is fixed on the bottom plate (111). A limiting chute is provided on the adjusting plate (313), and the hinge seat (311) is slidably connected to the adjusting plate (313).

8. The cylinder surface defect detection device according to claim 3, characterized in that, The camera assembly (4) includes a camera adjustment mechanism (41) and a camera body (42). The camera adjustment mechanism (41) is disposed below the bottom plate (111), and the camera body (42) is connected to the camera adjustment mechanism (41). The camera adjustment mechanism (41) adjusts the camera body (42) to be directly below the workpiece (5).

9. The cylinder surface defect detection device according to claim 8, wherein, The light source body (32) uses a linear light source, and the camera body (42) uses a line array camera.

10. The cylinder surface defect detection device according to claim 1, characterized in that, It further includes a control system, and the control system is electrically connected to the drive assembly (2), the light source assembly (3), and the camera assembly (4).

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