A steel plate surface defect visual detection device

Abstract

The utility model discloses a kind of steel plate surface defect visual inspection devices, it is related to visual inspection device technical field, the visual inspection device includes support platform, two inner grooves are provided in the inside of support platform, the inside of two inner grooves is fixedly provided with belt conveyor by screw, the upper end of support platform is welded and is provided with vertical support;It further includes: erecting pivot, it is rotatably arranged in the axle hole of the inside of the vertical support, and one end of erecting pivot is welded and is provided with steel plate carrier frame, the inside of steel plate carrier frame is provided with two assembly insertion slot, the inside of two assembly insertion slot is insertedly installed and is provided with inner support plate, the problem that the precision of steel plate surface defect visual inspection is affected is solved, the precision of detection is improved by horizontal and vertical direction moving vision camera of existing steel plate defect detection device, but in the process of detection, two vision cameras need to detect the front and back of steel plate synchronously, and local steel plate back is shielded in the process of guide roller conveying, cause.

Description

Technical Field

[0001] This utility model relates to the field of visual inspection device technology, specifically a visual inspection device for defects on the surface of steel plates. Background Technology

[0002] When inspecting the surface defects of finished steel plates, visual inspection devices are needed to assist in the inspection. Visual inspection devices are equipment that achieve target inspection through machine vision technology, and mainly consist of an image acquisition device, an image processing system, and an execution mechanism.

[0003] For example, announcement number CN219179245U (titled "A Steel Plate Surface Defect Detection Device") includes a cabinet, a conveying device, and an adjusting device. The conveying device is used to transport steel plates and runs through the cabinet. The adjusting device is located inside the cabinet and includes a horizontal movement mechanism and a vertical movement mechanism. The horizontal and vertical movement mechanisms adopt a screw drive mechanism. The adjusting device is connected to two vision cameras, which respectively capture images of the top and bottom of the steel plate. The screw drive mechanism includes a base, a geared motor, a guide rail, a threaded rod, a coupling, and a slider. The machine's power output shaft is connected to a coupling, which in turn connects to a threaded rod. The slider is slidably connected to a guide rail, and the slider has a threaded hole that is hinged to the threaded rod. The horizontal movement mechanism is a first lead screw drive mechanism, and the vertical movement mechanism is a second lead screw drive mechanism. The first and second lead screw drive mechanisms have the same structure. The slider of the first lead screw drive mechanism is connected to the base of the second lead screw drive mechanism, and the slider of the second lead screw drive mechanism is connected to a vision camera. The adjustable device allows the vision camera to be moved horizontally and vertically to adapt to the image size, making operation more convenient and accurate.

[0004] The aforementioned steel plate defect detection device improves detection accuracy by moving vision cameras horizontally and vertically. However, during the detection process, two vision cameras need to simultaneously detect the front and back of the steel plate. Furthermore, the back of the steel plate is partially obscured during the conveying process of the guide rollers, which affects the accuracy of visual detection of defects on the steel plate surface. Therefore, we provide a visual detection device for steel plate surface defects. Utility Model Content

[0005] The purpose of this invention is to provide a visual inspection device for steel plate surface defects, in order to solve the problem mentioned in the background art that the existing steel plate defect inspection device improves the accuracy of inspection by moving the vision camera in the horizontal and vertical directions, but requires two vision cameras to simultaneously inspect the front and back of the steel plate during the inspection process, and the back of the steel plate is partially blocked during the conveying of the guide roller, which affects the accuracy of visual inspection of steel plate surface defects.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a visual inspection device for defects on the surface of steel plates, including a support platform, the support platform having two inner grooves, and a belt conveyor fixed inside each of the two inner grooves by screws; a vertical support is welded to the upper end of the support platform.

[0007] Also includes:

[0008] A rotating shaft is installed, which is rotatably mounted in the shaft hole inside the vertical support. A steel plate frame is welded to one end of the rotating shaft. The steel plate frame has two assembly slots inside, and an inner support plate is inserted and installed in each of the two assembly slots.

[0009] The rear throttle is welded to the other end of the mounting shaft, and the rear throttle has two positioning holes on its exterior. The two positioning holes are symmetrically distributed about the mounting shaft. A positioning pin is installed in one positioning hole and the internal insertion hole of the rear throttle.

[0010] A horizontal frame is welded to the top of the vertical support, and a first threaded screw is provided inside the horizontal frame. A first screw slider is movably mounted on the first threaded screw. A longitudinal frame is welded to the upper end of the first screw slider. A second screw slider is movably mounted on the longitudinal frame. A vision camera is fixed to the lower end of the second screw slider by screws.

[0011] Preferably, the front end face of the steel plate frame is provided with two end face grooves, which are respectively connected to two assembly slots, and filling end blocks are welded to the edge of one end of each of the two inner support plates.

[0012] Preferably, a magnet block is embedded and fixed inside the end face groove by a nail-free adhesive, and the inner support plate is attracted and connected to the magnet block inside the end face groove by a filling end block.

[0013] Preferably, a gripping handle is provided on the front end surface of the inner support plate, and the gripping handle and the inner support plate are an integral structure.

[0014] Preferably, a handle bar is provided on one outer wall of the rear throttle, and the handle bar and the rear throttle are an integral structure.

[0015] Preferably, one end of both the transverse frame and the longitudinal frame is fixed with a servo motor by screws, and the output ends of the two servo motors are respectively connected to the first threaded screw and the second threaded screw via couplings.

[0016] Preferably, a support plate insert frame is welded to the front end face of the support platform, and the inner support plate is inserted and connected to the support platform through the support plate insert frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention places a steel plate requiring surface defect detection inside a steel plate frame. An inner support plate is installed inside the frame to support the steel plate. A vision camera first detects surface defects on the front of the steel plate. During the detection process, the vision camera can move laterally and longitudinally through the movable connection of a first and second lead screw slider, improving the accuracy of surface defect detection. After detecting the front, another inner support plate is inserted into the frame. Then, the rear throttle is rotated 180 degrees and a positioning pin is installed for positioning, so the front of the steel plate is facing down and the back is facing up. The upper inner support plate is then removed, and the vision camera detects the back of the steel plate. This comprehensive visual inspection of both sides of the steel plate requires only one vision camera, with no obstruction during inspection. This overcomes the problem of existing steel plate defect detection devices requiring two vision cameras to simultaneously inspect both sides, and the back of the steel plate being partially obstructed during guide roller transport, affecting the accuracy of surface defect detection. Attached Figure Description

[0019] Figure 1 This is a front view of the structure of the visual inspection device for steel plate surface defects of this utility model;

[0020] Figure 2 This is a rear view of the structure of the visual inspection device for steel plate surface defects of this utility model;

[0021] Figure 3 This is a top view of the structure of the visual inspection device for steel plate surface defects of this utility model;

[0022] Figure 4 This is an enlarged schematic diagram of part A of the present invention;

[0023] In the diagram: 1. Support platform; 2. Vertical bracket; 3. Support plate insert frame; 4. Inner groove; 5. Belt conveyor; 6. Steel plate frame; 7. Assembly slot; 8. Inner support plate; 9. Grip handle; 10. Horizontal frame; 11. Servo motor; 12. Longitudinal frame; 13. Vision camera; 14. Mounting shaft; 15. Rear throttle; 16. Positioning hole; 17. Positioning pin; 18. Handle bar; 19. First lead screw slider; 20. Second lead screw slider; 21. First threaded lead screw; 22. Second threaded lead screw; 23. Filler end block; 24. End face groove; 25. Magnet block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figure 1-4 An embodiment of this utility model is provided: a visual inspection device for defects on the surface of steel plates, including a support platform 1, with two inner grooves 4 inside the support platform 1, and a belt conveyor 5 fixed inside the two inner grooves 4 by screws. A vertical support 2 is welded to the upper end of the support platform 1.

[0026] Also includes:

[0027] A rotating shaft 14 is installed, which is rotatably set in the shaft hole inside the vertical support 2. A steel plate frame 6 is welded to one end of the rotating shaft 14. Two assembly slots 7 are provided inside the steel plate frame 6. An inner support plate 8 is inserted and installed inside each of the two assembly slots 7.

[0028] The rear throttle 15 is welded to the other end of the mounting shaft 14, and the rear throttle 15 has two positioning holes 16 on its exterior. The two positioning holes 16 are symmetrically distributed about the mounting shaft 14. A positioning pin 17 is installed in one positioning hole 16 and the internal insertion hole of the rear throttle 15.

[0029] A horizontal frame 10 is welded to the top of the vertical support 2, and a first threaded screw 21 is provided inside the horizontal frame 10. A first screw slider 19 is movably provided on the first threaded screw 21. A vertical frame 12 is welded to the upper end of the first screw slider 19. A second screw slider 20 is movably provided on the vertical frame 12. A vision camera 13 is fixed to the lower end of the second screw slider 20 by screws.

[0030] In use, the steel plate to be inspected for surface defects is placed inside the steel plate frame 6. At this time, an inner support plate 8 is installed inside the steel plate frame 6 to support the steel plate. The vision camera 13 is model MER2-G. The vision camera 13 first inspects the front of the steel plate for surface defects. During the inspection, the vision camera 13 can perform lateral and longitudinal displacement movements through the movable connection of the first lead screw slider 19 and the second lead screw slider 20, which improves the accuracy of the vision camera 13 in inspecting the surface defects of the steel plate. After inspecting the front, another inner support plate 8 is inserted into the steel plate frame 6. Then, the rear throttle 15 is rotated 180 degrees and the positioning pin 17 is installed for positioning. At this time, the front of the steel plate is facing down and the back is facing up. Then, the inner support plate 8 located on the top is removed, and the vision camera 13 inspects the back of the steel plate. Steel plates with no defects on both sides are conveyed and unloaded by a belt conveyor 5, while steel plates with defects are conveyed and unloaded by another belt conveyor 5.

[0031] Please see Figure 4 The front end face of the steel plate frame 6 is provided with two end face grooves 24, which are respectively connected to two assembly slots 7. Filler end blocks 23 are welded to the edges of one end of each of the two inner support plates 8. The two end face grooves 24 on the front end face of the steel plate frame 6 facilitate the corresponding connection of the filler end blocks 23. Please refer to [link / reference]. Figure 4 A magnet 25 is embedded and fixed inside the end face groove 24 using adhesive. The inner support plate 8 is attracted to the magnet 25 inside the end face groove 24 via a filling end block 23. The magnet 25 embedded and fixed inside the end face groove 24 using adhesive assists in the attraction between the filling end block 23 and the end face groove 24. Please refer to [link / reference]. Figure 1 A gripping handle 9 is provided on the front end face of the inner support plate 8. The gripping handle 9 is an integral structure with the inner support plate 8. The gripping handle 9 on the front end face of the inner support plate 8 facilitates gripping during the insertion and installation of the inner support plate 8. Please refer to [link / reference]. Figure 2 A handle bar 18 is provided on one outer wall of the rear throttle 15. The handle bar 18 is an integral part of the rear throttle 15. The handle bar 18 on one outer wall of the rear throttle 15 facilitates the rotation of the rear throttle 15. Please refer to [link / reference]. Figure 3 Each end of the transverse frame 10 and the longitudinal frame 12 is fixed with a servo motor 11 by screws. The output ends of the two servo motors 11 are respectively connected to the first lead screw 21 and the second lead screw 22 via couplings. The servo motors 11, which are fixed with screws at one end of the transverse frame 10 and the longitudinal frame 12, drive the first lead screw 21 and the second lead screw 22 to rotate. Please refer to [link / reference]. Figure 1A support plate insertion frame 3 is welded to the front end face of the support platform 1. The inner support plate 8 is inserted and connected to the support platform 1 through the support plate insertion frame 3. The support plate insertion frame 3 welded to the front end face of the support platform 1 serves to facilitate the removal and insertion of the inner support plate 8.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A visual inspection device for defects on the surface of steel plate, comprising a support platform (1), the support platform (1) having two inner grooves (4) inside, each inner groove (4) being fixed with a belt conveyor (5) by screws, and a vertical support (2) welded to the upper end of the support platform (1). Its features are: Also includes: A rotating shaft (14) is installed, which is rotatably set in the shaft hole inside the vertical support (2). A steel plate frame (6) is welded to one end of the rotating shaft (14). Two assembly slots (7) are provided inside the steel plate frame (6). An inner support plate (8) is inserted and installed inside the two assembly slots (7). The rear throttle (15) is welded to the other end of the mounting shaft (14), and the rear throttle (15) has two positioning holes (16) on its exterior. The two positioning holes (16) are symmetrically distributed about the mounting shaft (14). A positioning pin (17) is installed in one positioning hole (16) and the internal insertion hole of the rear throttle (15). A transverse frame (10) is welded to the top of the vertical support (2), and a first threaded screw (21) is provided inside the transverse frame (10). A first screw slider (19) is movably provided on the first threaded screw (21). A longitudinal frame (12) is welded to the upper end of the first screw slider (19). A second screw slider (20) is movably provided on the longitudinal frame (12). A vision camera (13) is fixed to the lower end of the second screw slider (20) by screws.

2. The visual inspection device for steel plate surface defects according to claim 1, characterized in that: The front end face of the steel plate frame (6) is provided with two end face grooves (24), which are respectively connected to two assembly slots (7). Filler end blocks (23) are welded to the edge of one end of each of the two inner support plates (8).

3. The visual inspection device for steel plate surface defects according to claim 2, characterized in that: The end face groove (24) is fitted with a magnet block (25) inside by a nail-free adhesive. The inner support plate (8) is connected to the magnet block (25) inside the end face groove (24) by a filler end block (23).

4. The visual inspection device for steel plate surface defects according to claim 1, characterized in that: The inner support plate (8) is provided with a gripping handle (9) on its front end surface. The gripping handle (9) and the inner support plate (8) are an integral structure.

5. The visual inspection device for steel plate surface defects according to claim 1, characterized in that: A handle bar (18) is provided on one side of the outer wall of the rear throttle (15), and the handle bar (18) and the rear throttle (15) are an integral structure.

6. The visual inspection device for steel plate surface defects according to claim 1, characterized in that: One end of each of the transverse frame (10) and the longitudinal frame (12) is fixed with a servo motor (11) by screws. The output ends of the two servo motors (11) are respectively connected to the first threaded screw (21) and the second threaded screw (22) through couplings.

7. The visual inspection device for steel plate surface defects according to claim 1, characterized in that: A support plate insert frame (3) is welded to the front end face of the support platform (1), and the inner support plate (8) is inserted and connected to the support platform (1) through the support plate insert frame (3).

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