Aluminum strip surface quality visual inspection equipment

Abstract

The utility model relates to aluminum strip surface quality visual inspection equipment which comprises a rack, a plurality of groups of LED light sources with different irradiation directions are arranged on the rack, and a high-speed camera used for receiving light reflected by the LED light sources is further arranged on the rack; the high-speed camera is installed on a cross beam, and the two ends of the cross beam are connected with the machine frame through adjusting mechanisms. The visual inspection equipment for the surface quality of the aluminum strip is novel in structure, reasonable in design and lower in hardware cost and maintenance cost, realizes multi-angle incident light, further improves the defect identification capability, improves the detection level and can effectively ensure the product quality; and the field angle of the light source and the camera can be adjusted according to an actual application scene.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to a visual detection device for the surface quality of aluminum strip. Background Technique

[0002] For the surface quality detection of aluminum strip, an online scanning visual detection device is generally used. The traditional online scanning visual detection device projects a group of parallel light sources onto the aluminum strip to generate reflected light, which is collected and processed by a high-speed camera to identify the defects on the aluminum strip. Since there is only a group of fixed parallel light sources, different defects have different absorption and reflection of light, which results in functional deficiencies and difficulties in identifying deformability, linearity, and color difference defects. Moreover, the architecture of using multiple cameras and fewer light sources has higher hardware and maintenance costs. Content of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a visual detection device for the surface quality of aluminum strip, which has low input cost, improves the defect recognition ability, improves the detection level, and can effectively ensure the product quality.

[0004] The utility model is realized by the following scheme: A visual detection device for the surface quality of aluminum strip, including a frame, on which multiple groups of LED light sources with different irradiation directions are arranged, and a high-speed camera for receiving the reflected light of the LED light sources is also arranged on the frame; the high-speed camera is installed on a cross beam, and both ends of the cross beam are connected to the frame through a first adjustment mechanism.

[0005] Further, the first adjustment mechanism includes an L-shaped connecting plate connected to the frame through several bolts A. A horizontal long hole and a vertical long hole adapted to the bolts are opened on the horizontal plate of the L-shaped connecting plate, and a camera adjustment pad is clamped between the horizontal plate of the L-shaped connecting plate and the frame.

[0006] Further, connecting discs are fixedly connected to both ends of the cross beam, and the vertical plate of the L-shaped connecting plate is connected to the connecting disc through a bolt B. Several first connecting holes are arranged on the connecting disc in a circumferentially evenly distributed manner, and a first vertical long hole capable of aligning with the first connecting holes is opened on the vertical plate of the L-shaped connecting plate, and the bolt B passes through the first vertical long hole and the corresponding first connecting hole.

[0007] Further, a second vertical long hole is opened in the middle of the vertical plate of the L-shaped connecting plate, a connecting shaft passing through the second vertical long hole is fixedly connected to the center of the connecting plate, and the connecting shaft can rotate and move up and down in the second vertical long hole; a fixing ring located outside the connecting shaft is fixedly connected to the outside of the vertical plate of the L-shaped connecting plate, and limit bolts pressing against the connecting shaft are respectively threadedly connected to the upper and lower sides of the fixing ring.

[0008] Further, both ends of the light source are connected to the frame through a second adjusting mechanism; the second adjusting mechanism includes a first bracket connected to the end of the light source by bolt C and a second bracket connected to the frame by bolt D. The first bracket and the second bracket are hinged. A plurality of second connection holes are evenly distributed in the circumferential direction around the hinge portion on the first bracket, and a bolt hole that can be aligned with the second connection hole is provided on the second bracket. A bolt E passing through the bolt hole and the second connection hole is connected between the first bracket and the second bracket.

[0009] Further, a first protective frame extending above the LED light source is provided above the high-speed camera, and a second protective frame is provided obliquely below the LED light source.

[0010] Compared with the prior art, the present utility model has the following beneficial effects: The visual inspection equipment for the surface quality of aluminum strip materials of the present utility model has a novel structure, reasonable design, lower hardware cost and maintenance cost, realizes multi-angle incident light, thereby improving the defect recognition ability, improving the detection level, and can effectively ensure the product quality; and the field of view angles of the light source and the camera can be adjusted according to the actual application scenario.

[0011] In order to make the purpose, technical solution and advantages of the present utility model clearer, the following will further describe the present utility model in detail through specific embodiments and related drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the use state of the embodiment of the present utility model;

[0013] Figure 2 is a perspective view of the embodiment of the present utility model;

[0014] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0015] Figure 4 is Figure 1 an enlarged schematic diagram of part B in

[0016] Figure 5 is Figure 1 an enlarged schematic diagram of part C in

[0017] Figure 6 is a simplified working diagram of the embodiment of the present utility model;

[0018] Figure 7 is an optical schematic diagram of the embodiment of the present utility model;

[0019] Description of reference numerals in the figure: 100 - frame, 200 - LED light source, 300 - high - speed camera, 400 - cross beam, 410 - connection plate, 411 - first connection hole, 412 - connection shaft, 500 - first adjustment mechanism, 510 - L - shaped connection plate, 511 - horizontal long hole, 512 - vertical long hole, 513 - first vertical long hole, 514 - second vertical long hole, 515 - fixing ring, 516 - U - shaped groove, 520 - camera adjustment pad, 530 - limit bolt, 540 - limit block, 600 - second adjustment mechanism, 610 - first bracket, 611 - second connection hole, 620 - second bracket, 621 - bolt E, 700 - aluminum strip, 800 - first protective frame, 900 - second protective frame. Detailed implementation mode

[0020] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0021] It should be noted that the terms used herein are only for describing specific implementation modes and are not intended to limit the exemplary implementation modes according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] As Figures 1 to 5 As shown, a visual inspection device for the surface quality of aluminum strip includes a frame 100. A plurality of groups of LED light sources 200 with different irradiation directions are provided on the frame 100. A high - speed camera 300 for receiving the reflected light of the LED light source is also provided on the frame. The high - speed camera is installed on a cross beam 400, and both ends of the cross beam are connected to the frame through a first adjustment mechanism 500. By setting a plurality of groups of LED light sources 200 in the present utility model, multi - angle incident light is realized, simulating multi - angle observation of the human eye, thereby improving the defect recognition ability, enhancing the detection ability of the visual device for material defects, improving the detection level, and effectively ensuring the product quality. And it can freely select a single field of view or multiple fields of view, with flexible and convenient use. The LED light source belongs to a device that is relatively easy to consume. The hardware cost and maintenance cost of the structure with multiple light sources and fewer cameras are both lower than those of the traditional structure with multiple cameras and fewer light sources.

[0023] In this embodiment, there are three groups of LED light sources 200, which are divided into bright-field light sources, dark-field light sources, and side-field light sources. The LED light sources at multiple specific angles irradiate the surface of the aluminum strip to form light reflection, and the target is captured by a high-speed camera and converted into an image signal; the image signal is processed and analyzed by an image processor, and defect characteristic values are extracted according to information such as distribution, brightness, size, and color; the intelligent classifier converts the extracted defect characteristic values into digital signals, performs arithmetic processing, and classifies the defects in a refined manner. The present utility model aims at the improvement and protection of the structure of the vision detection device. The above vision detection and processing process belongs to the prior art, and the principles and algorithms thereof will not be specifically described herein.

[0024] In this embodiment, the first adjustment mechanism 500 includes an L-shaped connecting plate 510 connected to the frame by a plurality of bolts A. A horizontal long hole 511 and a vertical long hole 512 adapted to the bolts are formed on the horizontal plate of the L-shaped connecting plate. A camera adjustment pad 520 is clamped between the horizontal plate of the L-shaped connecting plate and the frame; by selecting camera adjustment pads 520 with different thicknesses, the height of the high-speed camera 300 can be finely adjusted; the horizontal long hole 511 and the vertical long hole 512 are provided to adjust the horizontal and vertical positions of the L-shaped connecting plate 510, thereby realizing the adjustment of the left-right and front-back positions of the high-speed camera 300.

[0025] In this embodiment, connection disks 410 are fixedly connected to both ends of the cross beam. The vertical plate of the L-shaped connecting plate is connected to the connection disk by a bolt B. A plurality of first connection holes 411 evenly distributed in the circumferential direction are formed on the connection disk. A first vertical long hole 513 capable of aligning with the first connection holes is formed on the vertical plate of the L-shaped connecting plate. The bolt B passes through the first vertical long hole and the corresponding first connection hole. The first connection holes 411 in a full circle on the connection disk can realize the installation of the connection disk at different angles, so as to adjust the field-of-view angle of the camera according to the actual application scenario; one bolt B and the first vertical long hole 513 can be provided on each side, or two bolts B can be provided on each side, one above and one below. A through hole corresponding to the position of the first vertical long hole 513 is formed on the backing plate outside the first vertical long hole 513. The bolt B passes through the through hole on the backing plate, and the backing plate is used as a washer for the bolt.

[0026] In this embodiment, a second vertical long hole 514 is formed in the middle of the vertical plate of the L-shaped connecting plate 510. A connecting shaft 412 passing through the second vertical long hole is fixedly connected to the center of the connecting plate. The connecting shaft can rotate and move up and down in the second vertical long hole. A fixing ring 515 located around the connecting shaft is fixedly connected to the outer side of the vertical plate of the L-shaped connecting plate. Limit bolts 530 pressing against the connecting shaft are respectively threadedly connected to the upper and lower sides of the fixing ring. By using the upper and lower limit bolts 530 pressing against the connecting shaft, the height of the connecting shaft can be adjusted, thereby realizing the adjustment of the levelness of the cross beam.

[0027] In this embodiment, a U-shaped groove 516 is formed at the top of the vertical plate of the L-shaped connecting plate. A limit block 540 stuck in the U-shaped groove is bolted to the uppermost first connection hole of the connecting disk 410. After the installation angle of the connecting disk is determined, effective positioning is first carried out by using the cooperation of the limit block 540 and the U-shaped groove 516, and then connection and fixation are carried out by using bolt B.

[0028] In this embodiment, both ends of the LED light source 200 are connected to the frame through a second adjusting mechanism 600. The second adjusting mechanism includes a first bracket 610 bolted to the end of the LED light source and a second bracket 620 bolted to the frame. The first bracket and the second bracket are hinged. A plurality of second connection holes 611 evenly distributed in the circumferential direction are provided around the hinge part on the first bracket. A bolt hole capable of aligning with the second connection hole is formed on the second bracket. A bolt E621 passing through the bolt hole and the second connection hole is connected between the first bracket and the second bracket. The second connection holes 611 in a whole circle on the first bracket can realize the installation of the first bracket at different angles, so as to adjust the field of view angle of the light source according to the actual application scenario.

[0029] In this embodiment, a first protective frame 800 extending above the LED light source is provided above the high-speed camera, and a second protective frame 900 is provided obliquely below the LED light source. The protective frame is provided to effectively protect

[0030] For any of the technical solutions disclosed by the present utility model as described above, unless otherwise stated, if it discloses a numerical range, the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is only the numerical values with obvious technical effects or representativeness among many feasible numerical values. Since there are too many numerical values to list them all, the present utility model only discloses some numerical values to illustrate the technical solution of the present utility model. Moreover, the numerical values listed above should not constitute a limitation on the protection scope of the present invention.

[0031] If the utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, using bolts or screws for connection), or it can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the components fixedly connected to each other can also be replaced by an integral structure (for example, manufactured by integral forming using casting technology) (except when it is obviously impossible to use the integral forming process).

[0032] In addition, unless otherwise stated, the terms used to represent the positional relationship or shape in any of the technical solutions disclosed in the above utility model include states or shapes that are approximate, similar, or close to it.

[0033] Any component provided by the utility model can either be assembled from a plurality of separate components or be a single component manufactured by an integral forming process.

[0034] The above are only the preferred embodiments of the utility model, and are not intended to limit the utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the utility model without departing from the technical solution content of the utility model still fall within the protection scope of the technical solution of the utility model.

Claims

1. A visual inspection device for the surface quality of aluminum strip, characterized in that: It includes a frame, on which multiple groups of LED light sources with different irradiation directions are provided, and a high-speed camera for receiving the reflected light of the LED light sources is also provided on the frame; the high-speed camera is installed on a cross beam, and both ends of the cross beam are connected to the frame through a first adjustment mechanism.

2. The visual inspection device for the surface quality of aluminum strip according to claim 1, characterized in that: The first adjustment mechanism includes an L-shaped connecting plate connected to the frame through a number of bolt A. A horizontal long hole and a vertical long hole adapted to the bolt are provided on the horizontal plate of the L-shaped connecting plate, and a camera adjustment pad is clamped between the horizontal plate of the L-shaped connecting plate and the frame.

3. The visual inspection device for the surface quality of aluminum strip according to claim 2, characterized in that: Connecting disks are fixedly connected to both ends of the cross beam. The vertical plate of the L-shaped connecting plate is connected to the connecting disk through bolt B. A number of first connection holes evenly distributed in the circumferential direction are provided on the connecting disk. A first vertical long hole capable of aligning with the first connection hole is provided on the vertical plate of the L-shaped connecting plate, and bolt B passes through the first vertical long hole and the corresponding first connection hole.

4. The visual inspection device for the surface quality of aluminum strip according to claim 3, characterized in that: A second vertical long hole is provided in the middle of the vertical plate of the L-shaped connecting plate. A connecting shaft passing through the second vertical long hole is fixedly connected to the center of the connecting plate. The connecting shaft can rotate and move up and down in the second vertical long hole; a fixed ring located around the connecting shaft is fixedly connected to the outside of the vertical plate of the L-shaped connecting plate, and limit bolts pressing against the connecting shaft are respectively threadedly connected to the upper and lower sides of the fixed ring.

5. The visual inspection device for the surface quality of aluminum strip according to claim 1, characterized in that: Both ends of the light source are connected to the frame through a second adjustment mechanism; the second adjustment mechanism includes a first bracket connected to the end of the light source through bolt C and a second bracket connected to the frame through bolt D. The first bracket and the second bracket are hinged. A number of second connection holes evenly distributed in the circumferential direction are provided on the first bracket around the hinge part. A bolt hole capable of aligning with the second connection hole is provided on the second bracket, and bolt E passing through the bolt hole and the second connection hole is connected between the first bracket and the second bracket.

6. The visual inspection device for the surface quality of aluminum strip according to claim 1, characterized in that: A first protective frame extending above the LED light source is provided above the high-speed camera, and a second protective frame is provided obliquely below the LED light source.

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