Surface defect high-speed repeatability verification instrument

Abstract

The utility model discloses a high-speed repeatability verification instrument for surface defects. Relates to the field of surface defect detection, and aims to solve the problems that a production line is always in high-speed production operation in actual production and application at present, and the accuracy of product surface defect detection by machine vision equipment cannot be verified. The device comprises a fixed bottom plate, a rotating assembly, a detection support assembly, a detection assembly and a photoelectric assembly, the rotating assembly, the detection support assembly and the photoelectric assembly are sequentially and fixedly installed on the transverse center line above the fixed bottom plate, and the fixed bottom plate provides stable support for the rotating assembly, the detection support assembly and the photoelectric assembly. The rotating assembly is arranged between the detection support assembly and the photoelectric assembly. The detection support assembly is fixedly connected with the detection assembly, and the detection assembly is arranged above the rotating assembly. The rotating motor is matched with the porous rotating disc, the production speed of a production line is simulated through the rotating linear speed, and repeatability verification under different production speeds is tested according to different speeds. The device is used for machine vision detection.

Description

Technical Field

[0001] The utility model relates to the field of machine vision detection, and particularly relates to a high-speed repetitive verifier for surface defects in the production control of coils and sheets. Background Art

[0002] In recent years, with the rapid development of artificial intelligence, machine vision, as an important branch of artificial intelligence, is to identify, judge and measure target objects through optical devices and non-contact sensors instead of human eyes. In the production process of coils and sheets, machine vision detection devices are equipped to detect defects on the product surface. The application of machine vision devices effectively improves the qualification rate and consistency of products and avoids errors caused by manual detection.

[0003] However, in actual production applications, the production line has been in high-speed production operations, and the machine vision device cannot verify the accuracy of the detection of product surface defects. Man-made defects cannot be guaranteed to be the same each time, and the repetitive verification of the detection of machine vision devices has always been a difficult point in the industry. Repetitive verification is of great significance for production quality control.

[0004] Therefore, based on the problem that the machine vision device cannot verify the accuracy of the detection of product surface defects, a high-speed repetitive verifier for surface defects is designed to verify the repeatability of defect detection. Summary of the Utility Model

[0005] The present model aims to solve the problem that in actual production applications, the production line has been in high-speed production operations, and the machine vision device cannot verify the accuracy of the detection of product surface defects. Therefore, a high-speed repetitive verifier for surface defects is provided.

[0006] The technical solution of the utility model is as follows:

[0007] A high-speed repetitive verifier for surface defects includes a fixed bottom plate, a rotating assembly, a detection support assembly, a detection assembly and an optoelectronic assembly. The rotating assembly, the detection support assembly and the optoelectronic assembly are sequentially and fixedly installed on the horizontal center line above the fixed bottom plate. The fixed bottom plate provides stable support for the rotating assembly, the detection support assembly and the optoelectronic assembly, preventing displacement during operation to ensure normal operation and accuracy. The rotating assembly is arranged between the detection support assembly and the optoelectronic assembly;

[0008] The detection support assembly is fixedly connected with the detection assembly, and the detection assembly is arranged above the rotating assembly.

[0009] Preferably, the rotating assembly includes a motor bracket, a rotating motor, a porous turntable and a fixed pressing piece;

[0010] The top of the motor bracket is provided with motor fixing holes and a rotating shaft hole for installing a rotating motor; and the rotating motor is installed in the middle of the motor bracket and fixed to the top of the motor bracket. The porous turntable is connected to the rotating shaft of the rotating motor, and the rotation of the rotating motor drives the porous turntable to rotate. The fixed pressing piece is connected to the upper end of the defect detection hole of the porous turntable.

[0011] Preferably, the detection bracket assembly includes a fixed base, a lower light source bracket, an upper light source bracket, and an adjustment slide;

[0012] The fixed base is connected with a lower light source bracket, an upper light source bracket, and an adjustment slide from bottom to top, and the lower light source bracket and the upper light source bracket are arranged in parallel;

[0013] A strip-shaped lower light source is installed on the lower light source bracket, and a strip-shaped upper light source is installed on the upper light source bracket.

[0014] Preferably, the detection assembly includes a high-speed camera, an optical lens, a strip-shaped upper light source, a strip-shaped lower light source, an annular light source, and a point light source;

[0015] The high-speed camera is connected to the adjustment slide, the bottom of the high-speed camera is connected to the optical lens, the bottom of the optical lens is connected to the annular light source, and a point light source is installed in the coaxial light hole position of the optical lens.

[0016] Preferably, the optoelectronic component includes an optoelectronic bracket and a groove-shaped optoelectronic;

[0017] The long waist hole on the optoelectronic bracket is connected to the groove-shaped optoelectronic, and the bottom of the optoelectronic bracket is connected to the fixed bottom plate.

[0018] Preferably, four defect detection holes are provided on the porous turntable, and the four defect detection holes are detected simultaneously. An optoelectronic detection hole is provided between two adjacent defect detection holes.

[0019] Preferably, the fixed pressing piece is installed at the upper end of the defect detection hole on the porous turntable for fixing the material for detecting surface defects.

[0020] Preferably, the lower light source bracket is fixed to the side of the fixed base for fixing the strip-shaped lower light source, and the installation position and irradiation angle of the strip-shaped lower light source are adjusted through the long waist hole of the optoelectronic bracket.

[0021] Preferably, the upper light source bracket is fixed to the side of the fixed base for fixing the strip-shaped upper light source, and the installation position and irradiation angle of the strip-shaped upper light source are adjusted through the long waist hole of the optoelectronic bracket.

[0022] Preferably, the rotating motor and the porous turntable are installed flatly, and during the rotation process, the four defect detections are at the same horizontal position.

[0023] The present utility model has the following effects compared with the prior art:

[0024] 1. The rotating motor of the present utility model is combined with a porous turntable, and the production speed of the production line is simulated through the linear velocity of rotation, and the repeatability verification under different production speeds is tested according to different speeds. There are 4 defect detection holes on the porous turntable, which can simultaneously meet the repeatability verification of 4 groups of defects, and the verification efficiency is greatly improved.

[0025] 2. The fixed pressing piece of the present utility model can ensure the stable fixation of the defective material, and will not deviate and deform due to the rotational movement, ensuring that the defects collected each time are the same, and avoiding the inability to make the same defects each time during the production line verification by manual production of defects.

[0026] 3. The design of multiple light sources of the present utility model can meet the lighting requirements for different detection working conditions and different defects. In actual operation, they can be used individually or in combination of multiple light sources, and the applicability of the scenario is stronger.

[0027] 4. The upper light source bracket and the lower light source bracket of the present utility model adjust the heights of the upper light source bracket and the lower light source bracket through multiple groups of holes on the side of the fixed base. The strip-shaped upper light source and the strip-shaped lower light source can adjust the front and rear positions and the rotation angle according to the fixing bolts fixed on the upper light source bracket and the lower light source bracket. The annular light can adjust the installation position on the optical lens, adjust the lighting effect up and down, and select a suitable light source combination according to different defect types to meet the lighting conditions of the production line. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the present utility model;

[0029] Figure 2 is the front view of the present utility model;

[0030] Figure 3 is a schematic structural diagram of the rotating assembly;

[0031] Figure 4 is a schematic structural diagram of the detection bracket assembly;

[0032] Figure 5 is a schematic structural diagram of the detection assembly;

[0033] Figure 6 is a schematic structural diagram of the optoelectronic assembly;

[0034] Figure 7 is a schematic structural diagram of the porous turntable on the rotating assembly;

[0035] In the figure: 1, fixed base plate; 2, rotating assembly; 3, detection bracket assembly; 4, detection assembly; 5, optoelectronic assembly; 21, motor bracket; 22, rotating motor; 23, porous turntable; 24, fixed pressing piece; 31, fixed base; 32, lower light source bracket; 33, upper light source bracket; 34, adjusting slide; 41, high-speed camera; 42, optical lens; 43, strip-shaped upper light source; 44, strip-shaped lower light source; 45, annular light source; 46, point light source; 51, optoelectronic bracket; 52, groove-shaped optoelectronic; 231, defect detection hole; 232, optoelectronic detection hole. Detailed implementation manners

[0036] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention. Detailed implementation manner one:

[0038] Combined with Figure 1 and Figure 2 To illustrate this implementation manner, a high-speed repeatability verification instrument for surface defects in this implementation manner includes a fixed base plate 1, a rotating assembly 2, a detection bracket assembly 3, a detection assembly 4 and an optoelectronic assembly 5. The rotating assembly 2, the detection bracket assembly 3 and the optoelectronic assembly 5 are sequentially and fixedly installed on the horizontal center line above the fixed base plate 1. The fixed base plate 1 provides stable support for the rotating assembly 2, the detection bracket assembly 3 and the optoelectronic assembly 5, preventing them from shifting during operation and ensuring normal operation and accuracy. The rotating assembly 2 is arranged between the detection bracket assembly 3 and the optoelectronic assembly 5; the detection bracket assembly 3 is fixedly connected to the detection assembly 4, and the detection assembly 4 is arranged above the rotating assembly 2;

[0039] The fixed base plate 1 is a whole flat plate. Threaded holes for connecting and fixing other components are opened on the fixed base plate 1, providing stable support for other components, preventing them from shifting, shaking and tilting during operation, so as to ensure normal operation and accuracy. Detailed implementation manner two:

[0041] Combined with Figure 3 To illustrate this implementation manner, a high-speed repeatability verification instrument for surface defects in this implementation manner, the rotating assembly 2 includes a motor bracket 21, a rotating motor 22, a porous turntable 23 and a fixed pressing piece 24;

[0042] The top of the motor bracket 21 is provided with a motor fixing hole and a rotating shaft hole for installing the rotating motor 22; and the rotating motor 22 is installed in the middle of the motor bracket 21 and fixed to the top of the motor bracket 21. The porous turntable 23 is connected to the rotating shaft of the rotating motor 22, and the rotation of the rotating motor drives the porous turntable to rotate. The fixed pressing piece 24 is connected to the upper end of the defect detection hole of the porous turntable 23.

[0043] The motor bracket 21 is composed of four flat plates, and the top is provided with a motor fixing hole and a rotating shaft hole for installing the rotating motor. The motor bracket 21 plays a role in carrying the rotating motor 22 and the porous turntable 23, providing a stable support and a stable operation.

[0044] The rotating motor 22 is installed in the middle of the motor bracket 21 and fixed to the top of the motor bracket 21. The motor can provide different speeds;

[0045] The porous turntable 23 is installed on the rotating shaft of the rotating motor 22, and the rotation of the rotating motor 22 drives the porous turntable 23 to rotate. The installation of the porous turntable 23 requires being horizontal and concentric with the axis of the rotating motor 22 to avoid generating additional stress, wear, vibration and noise; four defect detection holes 231 are provided on the porous turntable 23, and four defects can be detected simultaneously.

[0046] The fixed pressing piece 24 is installed at the upper end of the defect detection hole of the porous turntable 23 for fixing the material for detecting surface defects. The fixed pressing piece 24 can ensure the fixation of the defective material and prevent deviation and deformation caused by high-speed rotation. Specific Embodiment Three:

[0048] Combined with Figure 4 To illustrate this embodiment, a high-speed repeatability verification instrument for surface defects in this embodiment, the detection bracket assembly 3 includes a fixed base 31, a lower light source bracket 32, an upper light source bracket 33, and an adjustment slide 34;

[0049] The fixed base 31 is respectively connected with a lower light source bracket 32, an upper light source bracket 33, and an adjustment slide 34 from bottom to top. The lower light source bracket 32 and the upper light source bracket 33 are arranged in parallel; a strip-shaped lower light source 44 is installed on the lower light source bracket 32, and a strip-shaped upper light source 43 is installed on the upper light source bracket 33. The fixed base 31 is fixed on the fixed bottom plate 1 for fixing the light source bracket and the adjustment slide 34. Multiple groups of hole positions on the side can adjust the height of the strip-shaped upper and lower light sources to meet different lighting requirements.

[0050] The adjustment slide 34 is fixed to the upper end of the fixed base 31 for fixing the detection assembly 4, providing a curved surface movement that can be adjusted back and forth, and two linear movements that can be adjusted up and down and left and right for adjusting the position of the detection assembly 4. Specific Embodiment Four:

[0052] Combined withFigure 5 Referring to this embodiment, a high-speed repeatability verification instrument for surface defects in this embodiment, the detection component 4 includes a high-speed camera 41, an optical lens 42, a strip-shaped upper light source 43, a strip-shaped lower light source 44, an annular light source 45, and a point light source 46;

[0053] The high-speed camera 41 is connected to the adjustment slide 34. The bottom of the high-speed camera 41 is connected to the optical lens 42. The bottom of the optical lens 42 is connected to the annular light source 45. A point light source 46 is installed in the coaxial light hole of the optical lens 42.

[0054] The high-speed camera 41 is fixed on the adjustment slide 34 to perform high-speed image acquisition of surface defects during movement. The optical lens 42 is installed at the bottom of the high-speed camera 41 and is connected by corresponding threads to provide accurate imaging for the high-speed camera 41, improve the image quality, and enhance the clarity, contrast, and color restoration of the image.

[0055] The annular light source 45 is installed at the bottom of the optical lens 42 to provide uniform dark-field illumination for defect detection. The point light source 46 is installed in the coaxial light hole of the optical lens 42 to provide high-brightness bright-field illumination for defect detection. The design of multiple light sources can meet the lighting requirements for different detection conditions and different defects. In actual operation, they can be used individually or in combination. Specific Embodiment Five:

[0057] Combined with Figure 6 Referring to this embodiment, a high-speed repeatability verification instrument for surface defects in this embodiment, the optoelectronic component 5 includes an optoelectronic support 51 and a grooved optoelectronic device 52;

[0058] The grooved optoelectronic device 52 is connected to the long oval hole on the optoelectronic support 51. The bottom of the optoelectronic support 51 is connected to the fixed bottom plate 1. The grooved optoelectronic device 52 is installed on the long oval hole of the optoelectronic support 51 and is adjusted according to the height of the porous turntable 23. The optoelectronic device irradiates the optoelectronic detection hole 232 on the porous turntable 23. The optoelectronic signal triggers the camera to take pictures and provides the rotation speed of the porous turntable. Specific Embodiment Six:

[0060] Combined with Figure 7 Referring to this embodiment, a high-speed repeatability verification instrument for surface defects in this embodiment, four defect detection holes 231 are provided on the porous turntable 23, and the four defect detection holes 231 are detected simultaneously. An optoelectronic detection hole 232 is provided between two adjacent defect detection holes 231. Specific Embodiment Seven:

[0062] Combined with Figure 3 Or Figure 7Description of this embodiment, a high-speed repeatability verifier for surface defects in this embodiment. The fixed pressing plate 24 is installed at the upper end of the defect detection hole 231 on the porous turntable 23 for fixing the material for detecting surface defects. Specific Embodiment VIII:

[0064] Combined with Figure 4 — Figure 6 Description of this embodiment, a high-speed repeatability verifier for surface defects in this embodiment. The lower light source bracket 32 is fixed on the side of the fixed base 31 for fixing the strip-shaped lower light source 44. The installation position and irradiation angle of the strip-shaped lower light source 44 are adjusted through the long oval holes of the optoelectronic bracket 51. Specific Embodiment IX:

[0066] Combined with Figure 4 — Figure 6 Description of this embodiment, a high-speed repeatability verifier for surface defects in this embodiment. The upper light source bracket 33 is fixed on the side of the fixed base 31 for fixing the strip-shaped upper light source 43. The installation position and irradiation angle of the strip-shaped upper light source 43 are adjusted through the long oval holes of the optoelectronic bracket 51. Specific Embodiment X:

[0068] Combined with Figure 7 Description of this embodiment, a high-speed repeatability verifier for surface defects in this embodiment. The rotating motor 22 is installed flatly with the porous turntable 23, and during rotation, the four defect detection holes 231 are in the same horizontal position.

[0069] Working principle:

[0070] Cut out the sheet material defects and place them at the position of the defect detection hole 231, lay them flat, and fix them with the fixed pressing plate 24. There are 4 groups of defect detection holes 231, which can be increased or decreased according to the actual number of repeatability verification defects. The fixed pressing plate 24 is fixed on the porous turntable 23 by bolts, which can ensure the fixation of the defective material and prevent the detection material from deviating and deforming due to the high-speed rotation of the porous turntable 23. To ensure the simultaneous verification of 4 groups of defects, the rotating motor and the porous turntable must be installed flatly, and during rotation, the 4 groups of defects are in the same horizontal position.

[0071] Manually adjust the knob of the adjustment slide 34 to make the high-speed camera 41 meet the position and angle of the production line. The adjustment slide 34 provides a curved surface movement that can be adjusted back and forth, and two linear movements for up and down and left and right adjustments; adjust the focal length ring of the optical lens 42 to adjust the focal length to the defect detection position of the porous turntable 23. For the adjustment of the focal length, the up and down adjustment structure of the adjustment slide can also be used to cooperate for manual fine-tuning. The upper light source bracket 33 and the lower light source bracket 32 adjust the heights of the upper light source bracket 33 and the lower light source bracket 32 through multiple groups of hole positions on the side of the fixed base 31. The strip-shaped upper light source 43 and the strip-shaped lower light source 44 can adjust the front and back positions and the rotation angle according to the fixing bolts fixed on the upper light source bracket 33 and the lower light source bracket 32. The annular light source 45 can adjust the installation position on the optical lens, adjust the light effect up and down, and select a suitable light source combination according to different defect types to meet the lighting conditions of the production line; the rotating motor 22 drives the porous turntable 23 to rotate, and adjusts the rotation speed of the rotating motor 22 according to the different production speeds of the production line to simulate the production speed of the production line. The groove-shaped optoelectronic device 52 irradiates the optoelectronic detection hole 232 position on the porous turntable 23. The optoelectronic signal not only triggers the camera to take pictures but also provides the rotation speed of the porous turntable 23. A speed closed-loop control is performed by comparing the acquisition of the optoelectronic signal with the speed of the rotating motor; the material defects are rotated by the porous turntable 23, and at the same time, the high-speed camera 41 takes pictures to collect and process the pictures. By comparing the processed defect data, the repeatability verification of the defects can be effectively carried out.

[0072] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any form. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to be equivalent variations of equivalent embodiments within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention and is based on the technical essence of the present invention, any simple modification, equivalent replacement, and improvement of the above embodiments within the spirit and principle of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A high-speed repetitive verification instrument for surface defects, characterized in that It includes a fixed base plate (1), a rotating assembly (2), a detection bracket assembly (3), a detection assembly (4), and an optoelectronic assembly (5). Above the fixed base plate (1), the rotating assembly (2), the detection bracket assembly (3), and the optoelectronic assembly (5) are sequentially and fixedly installed on the horizontal center line. The fixed base plate (1) provides stable support for the rotating assembly (2), the detection bracket assembly (3), and the optoelectronic assembly (5), preventing displacement during operation to ensure normal operation and accuracy. The rotating assembly (2) is arranged between the detection bracket assembly (3) and the optoelectronic assembly (5). The detection bracket assembly (3) is fixedly connected to the detection assembly (4), and the detection assembly (4) is arranged above the rotating assembly (2).

2. The high-speed repetitive verification instrument for surface defects according to claim 1, characterized in that The rotating assembly (2) includes a motor bracket (21), a rotating motor (22), a porous turntable (23), and a fixed pressing piece (24). The top of the motor bracket (21) is provided with a motor fixing hole and a rotating shaft hole for installing the rotating motor (22). The rotating motor (22) is installed in the middle of the motor bracket (21) and fixed to the top of the motor bracket (21). The porous turntable (23) is connected to the rotating shaft of the rotating motor (22), and the porous turntable (23) is driven to rotate by the rotation of the rotating motor (22). The fixed pressing piece (24) is connected to the upper end of the defect detection hole of the porous turntable (23).

3. The high-speed repeatability verification instrument for surface defects according to claim 1, characterized in that, The detection bracket assembly (3) includes a fixed base (31), a lower light source bracket (32), an upper light source bracket (33), and an adjustment slide (34). The fixed base (31) is respectively connected with the lower light source bracket (32), the upper light source bracket (33), and the adjustment slide (34) from bottom to top. The lower light source bracket (32) and the upper light source bracket (33) are arranged in parallel. A strip-shaped lower light source (44) is installed on the lower light source bracket (32), and a strip-shaped upper light source (43) is installed on the upper light source bracket (33).

4. The high-speed repeatability verification instrument for surface defects according to claim 1, characterized in that The detection assembly (4) includes a high-speed camera (41), an optical lens (42), a strip-shaped upper light source (43), a strip-shaped lower light source (44), an annular light source (45), and a point light source (46). The high-speed camera (41) is connected to the adjustment slide (34). The bottom of the high-speed camera (41) is connected to the optical lens (42). The bottom of the optical lens (42) is connected to the annular light source (45). A point light source (46) is installed in the coaxial light hole of the optical lens (42).

5. The high-speed repetitive verification instrument for surface defects according to claim 1, characterized in that, The optoelectronic assembly (5) includes an optoelectronic bracket (51) and a groove-shaped optoelectronic device (52). The long oval hole on the optoelectronic bracket (51) is connected to the groove-shaped optoelectronic device (52), and the bottom of the optoelectronic bracket (51) is connected to the fixed base plate (1).

6. The high-speed repeatability verification instrument for surface defects according to claim 2, characterized in that Four defect detection holes (231) are provided on the porous turntable (23), and the four defect detection holes (231) are detected simultaneously. An optoelectronic detection hole (232) is provided between two adjacent defect detection holes (231).

7. The high-speed repeatability verification instrument for surface defects according to claim 2, characterized in that, The fixed pressing piece (24) is installed at the upper end of the defect detection hole (231) on the porous turntable (23) for fixing the material for detecting surface defects.

8. The high-speed repeatability verification instrument for surface defects according to claim 3, wherein, The lower light source bracket (32) is fixed on the side of the fixed base (31) and is used to fix the strip-shaped lower light source (44). The installation position and irradiation angle of the strip-shaped lower light source (44) are adjusted through the long oval holes of the optoelectronic bracket (51).

9. The high-speed repeatability verification instrument for surface defects according to claim 3, wherein The upper light source bracket (33) is fixed on the side of the fixed base (31) and is used to fix the strip-shaped upper light source (43). The installation position and irradiation angle of the strip-shaped upper light source (43) are adjusted through the long oval holes of the optoelectronic bracket (51).

10. The high-speed repeatability verification instrument for surface defects according to claim 2, characterized in that The rotary motor (22) is flatly installed with the porous turntable (23), and during the rotation, the four defect detection holes (231) are at the same horizontal position.

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