Scraper defect detection device

Abstract

The utility model provides a scraper defect detection device which comprises a machine table, a product movement module and two sets of visual detection mechanisms, the two sets of visual detection mechanisms are arranged on the two sides of the product movement module respectively, and each set of visual detection mechanism comprises an edge detection camera, a side face detection camera, an edge detection light source and a side face detection light source. The product movement module comprises a conveying linear movement module and a product platform, the product platform is used for fixing a scraper to be detected, the central axis of the edge detection camera and the plane of the product platform form an inclined included angle, and the central axis of the side face detection camera is parallel to the plane of the product platform. The automatic feeding and double-face detection device has the automatic feeding and double-face detection functions, the two sides of the product movement module are each provided with a visual detection mechanism, the surface of a scraper body and the edge of a blade of the scraper can be more accurately detected while comprehensive covering of the scraper is achieved, and then defect detection of the scraper can be efficiently and accurately achieved.

Description

Technical Field

[0001] This utility model relates to the field of visual inspection, and in particular to a scraper defect detection device. Background Technology

[0002] A squeegee, also known as a doctor blade, is a thin sheet used in printing circuit boards or screens to scrape away excess ink or solder paste. After a period of use, squeegees often need to be inspected for blade flatness, chipped edges, wear, or deformation to promptly identify and replace deformed or defective parts, thus ensuring the flatness of the squeegeed surface. Common inspection methods include visual inspection (manual visual inspection); light transmission method (placing the squeegee on a flat platform and illuminating the contact area between the squeegee and the platform with a light source to check the light transmission); and camera inspection (using a camera to capture images of the squeegee for inspection). Currently, camera inspection is the most widely used method. However, existing inspection equipment can only inspect a portion of the squeegee and cannot provide comprehensive coverage. Manual flipping of the squeegee is required for double-sided inspection, resulting in low efficiency and accuracy. Utility Model Content

[0003] In view of the above, this utility model provides a scraper defect detection device with high detection efficiency and high detection accuracy.

[0004] The present invention specifically adopts the following technical solution: a scraper defect detection device, comprising a machine base, a product motion module mounted on the machine base, and two sets of vision inspection mechanisms. The two sets of vision inspection mechanisms are respectively disposed on both sides of the product motion module, and are used to simultaneously detect both sides of the product located on the product motion module. Each set of vision inspection mechanisms includes an edge detection camera, a side detection camera, an edge detection light source, and a side detection light source. The product motion module includes a linear motion module for conveying and a product platform mounted thereon. The product platform is used to fix the scraper to be inspected. The central axis of the edge detection camera forms an inclined angle with the detection plane of the product platform, and the central axis of the side detection camera is parallel to the detection plane of the product platform.

[0005] Furthermore, the edge detection light source and the edge detection camera are respectively located on both sides of the product motion module, and the edge detection light source illuminates the edge detection camera from the opposite side.

[0006] Furthermore, the side detection light source and the side detection camera are located on the same side of the product motion module, and the side detection light source illuminates the side detection camera from below on the same side.

[0007] Furthermore, the edge detection camera is mounted diagonally above the product platform via a horizontal adjustment mechanism, and the side detection camera is also mounted on the horizontal adjustment mechanism and located below the edge detection camera.

[0008] Furthermore, the transverse movement adjustment mechanism includes a horizontal linear module and a support column. The horizontal linear module is arranged on the machine table through the support column. The edge detection camera and the side detection camera are jointly arranged on the horizontal linear module through a connecting plate and are driven by it to move closer to or away from the blade.

[0009] Furthermore, the product platform includes a lifting platform and a blade clamp arranged on the lifting platform. The lifting platform is arranged on the transmission linear motion module and is used to drive the lifting motion of the blade clamp.

[0010] Furthermore, the blade clamp includes a base, a fixing plate, a movable plate, and a movable plate adjustment mechanism. The fixing plate is vertically fixed on the base. The movable plate is movably arranged on the base through the movable plate adjustment mechanism, and the fixing plate and the movable plate are parallel to each other.

[0011] Furthermore, the movable plate adjustment mechanism includes a baffle, a slide rail, a slider, and a spring. The slide rail is fixed on the base. The movable plate is arranged on the slide rail through the slider. The baffle is fixed on the base and is located at the end of the slide rail. The spring is connected between the slider and the baffle.

[0012] Furthermore, a plurality of the movable plate adjustment mechanisms are regularly arranged on the base.

[0013] Furthermore, each set of visual detection mechanisms further includes a distance sensor.

[0014] The blade defect detection device of the present utility model has automatic feeding and double-sided detection functions. A set of visual detection mechanisms are respectively arranged on both sides of the product motion module. Each set of visual detection mechanisms includes an edge detection camera, a side detection camera, and a light source supporting the detection camera. While achieving full coverage of the blade, it can more accurately detect the blade surface and the edge of the blade, and thus can efficiently and accurately achieve the defect detection of the blade. In addition, the blade clamp is a telescopic and adjustable structure, which can adapt to blades of various sizes. Description of the Drawings

[0015] Figure 1 It is a schematic three-dimensional structure diagram of the blade defect detection device of the present utility model.

[0016] Figure 2 It is a schematic plan structure diagram of the blade defect detection device of the present utility model.

[0017] Figure 3 It is a schematic structure diagram of the blade.

[0018] Figure 4 It is a schematic structure diagram of the blade clamp.

[0019] Figure 5 This is a schematic diagram of a defect obtained using the scraper defect detection device of this utility model. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set up" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood through the specific circumstances.

[0022] Reference Figures 1-3 This embodiment of a scraper defect detection device includes a machine base 1, a product motion module 2 mounted on the machine base 1, and two sets of vision inspection mechanisms 3. The two sets of vision inspection mechanisms 3 are respectively located on both sides of the product motion module 2, and are used to simultaneously detect both sides of the product located on the product motion module 2. The two sets of vision inspection mechanisms have the same structure. Each set of vision inspection mechanisms 3 includes an edge detection camera 31, a side detection camera 32, an edge detection light source 33, a side detection light source 34, and a distance sensor 35. The product motion module 2 includes a conveying linear motion module 21 and a product platform 22 mounted on the conveying linear motion module 21. The product platform 22 is used to fix the scraper 100 to be inspected. The central axis of the edge detection camera 31 forms an inclined angle α with the detection plane on the product platform 22, so that the edge detection camera 31 is tilted and aligned with the edge line h of the scraper 100 blade, detecting whether there is a gap or continuous wave on the edge of the scraper blade. At the same time, the edge detection camera 31 can also take into account the area between the two edges of the blade. The central axis of the side inspection camera 32 is parallel to the inspection plane on the product platform 22, so that the side inspection camera 32 is tilted and aligned with the side s of the scraper, and is used to detect whether there are defects on the blade surface of the scraper, such as scratches, dents, gaps, deformation, etc.

[0023] Furthermore, the edge detection light source 33 and the edge detection camera 31 are located on opposite sides of the product motion module 2, with the edge detection light source 33 illuminating the edge detection camera 31 from the opposite side. The side detection light source 34 and the side detection camera 32 are located on the same side of the product motion module 2, with the side detection light source 34 illuminating the side detection camera 32 from below. The edge detection light source 33 and the side detection light source 34 are each mounted on the machine base 1 via light source brackets 36. The distance sensor 35 is fixed on the light source bracket 36 closest to the loading end. When the scraper 100 is driven by the product motion module 2 to move towards the vision inspection mechanism 3, it first passes the distance sensor 35 and automatically adjusts its position based on the feedback data from the distance sensor 35.

[0024] The edge detection camera 31 is mounted diagonally above the product platform 22 via a horizontal adjustment mechanism. The side detection camera 32 is also mounted on the horizontal adjustment mechanism and located below the edge detection camera 31. The horizontal adjustment mechanism includes a horizontal linear module 37 and a support column 38. The horizontal linear module 37 is mounted on the machine base 1 via the support column 38. The edge detection camera 31 and the side detection camera 32 are jointly mounted on the horizontal linear module 37 via a connecting plate 39 and are driven by it to move closer to or away from the scraper 100.

[0025] Combined with reference Figure 4 The product platform 22 includes a lifting platform 221 and a scraper clamp mounted on the lifting platform 221. The lifting platform 221 is mounted on the linear motion transmission module 21 and is used to drive the lifting motion of the scraper clamp. The scraper clamp includes a base 222, a fixed plate 223, a movable plate 224, and a movable plate adjustment mechanism. The fixed plate 223 is vertically fixed to the base 222, and the movable plate 224 is movably mounted on the base 222 via the movable plate adjustment mechanism, with the fixed plate 223 and the movable plate 224 being parallel to each other. The movable plate adjustment mechanism includes a baffle 225, a slide rail 226, a slider 227, and a spring 228. The slide rail 226 is fixed to the base 222, the movable plate 224 is mounted on the slide rail 226 via the slider 227, the baffle 225 is fixed to the base 222 and located at the end of the slide rail 226, and the spring 228 connects the slider 227 and the baffle 225. Spread the movable plate 224 and the fixed plate 223 apart, so that the movable plate 224 is away from the fixed plate 223, creating a gap between them to place the scraper 100. Then release the force, and the movable plate 224 will move towards the fixed plate 223 under the action of the spring 228, clamping the scraper 100 between the two plates.

[0026] Meanwhile, multiple movable plate adjustment mechanisms are regularly arranged on the base 222 to increase the uniformity and overall force of clamping the scraper and improve stability.

[0027] In use, the material is manually loaded. The movable plate 224 is opened, and the scraper 100 is placed between the movable plate 224 and the fixed plate 223. The scraper 100 is then clamped in place by releasing the clamp. The linear motion module 21 is activated to convey the scraper 100 to the vision inspection mechanism 3. First, it passes through the distance sensor 35. Based on the feedback data from the distance sensor 35, the lifting platform 221 automatically adjusts the scraper height. The horizontal linear module 37 automatically adjusts the distance between the edge detection camera 31 and the side detection camera 31 relative to the scraper 100 to obtain the clearest image of the inspection surface. After adjustment, the scraper continues to be conveyed, sequentially passing through two vision inspection mechanisms. The edge detection camera 31 and the side detection camera 32 of one vision inspection mechanism 3 acquire images of the scraper's edge line h1 and the side of the scraper body s1 on one side, respectively. Then, the edge detection camera 31 and the side detection camera 32 of the other vision inspection mechanism 3 acquire images of the scraper's edge line h2 and the side of the scraper body s2 on the other side, respectively. Based on the acquired images, it is determined whether there are defects on the edge of the blade and the blade body. For example… Figure 5 The image shows an example of a notch on the edge of a blade.

[0028] Furthermore, the above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. The understanding of this specification should be based on those skilled in the art. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. A scraper defect detection device, characterized in that: The device includes a machine base, a product motion module mounted on the machine base, and two sets of vision inspection mechanisms. The two sets of vision inspection mechanisms are located on both sides of the product motion module and are used to simultaneously inspect both sides of the product located on the product motion module. Each set of vision inspection mechanisms includes an edge detection camera, a side detection camera, an edge detection light source, and a side detection light source. The product motion module includes a linear motion module for conveying and a product platform mounted on it. The product platform is used to fix the scraper to be inspected. The central axis of the edge detection camera forms an inclined angle with the detection plane of the product platform, and the central axis of the side detection camera is parallel to the detection plane of the product platform.

2. The scraper defect detection device as described in claim 1, characterized in that: The edge detection light source and the edge detection camera are located on opposite sides of the product motion module, with the edge detection light source illuminating the edge detection camera from the opposite side.

3. The scraper defect detection device as described in claim 1, characterized in that: The side detection light source and the side detection camera are located on the same side of the product motion module, and the side detection light source illuminates the side detection camera from below on the same side.

4. The scraper defect detection device as described in claim 1, characterized in that: The edge detection camera is mounted diagonally above the product platform via a horizontal adjustment mechanism, and the side detection camera is also mounted on the horizontal adjustment mechanism and located below the edge detection camera.

5. The scraper defect detection device as described in claim 4, characterized in that: The lateral adjustment mechanism includes a horizontal linear module and a support column. The horizontal linear module is mounted on the machine base via the support column. The edge detection camera and the side detection camera are mounted together on the horizontal linear module via a connecting plate and are driven by the module to move closer to or away from the scraper.

6. The scraper defect detection device as described in claim 1, characterized in that: The product platform includes a lifting platform and a scraper clamp mounted on the lifting platform. The lifting platform is mounted on the linear motion module and is used to drive the lifting motion of the scraper clamp.

7. The scraper defect detection device as described in claim 6, characterized in that: The scraper clamp includes a base, a fixed plate, a movable plate, and a movable plate adjustment mechanism. The fixed plate is vertically fixed on the base, and the movable plate is movably mounted on the base through the movable plate adjustment mechanism. The fixed plate and the movable plate are parallel to each other.

8. The scraper defect detection device as described in claim 7, characterized in that: The movable plate adjustment mechanism includes a baffle, a slide rail, a slider, and a spring. The slide rail is fixed on the base, the movable plate is mounted on the slide rail via the slider, the baffle is fixed on the base and located at the end of the slide rail, and the spring is connected between the slider and the baffle.

9. The scraper defect detection device as described in claim 8, characterized in that: Multiple movable plate adjustment mechanisms are regularly arranged on the base.

10. The scraper defect detection device as described in claim 1, characterized in that: Each of the aforementioned visual inspection mechanisms also includes a distance sensor.

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