Information acquisition device based on image recognition

Abstract

The invention relates to the technical field of industrial visual inspection, and discloses an information acquisition device based on image recognition, which comprises a conveying belt, a support frame is fixedly connected to the side surface of the conveying belt, and an industrial camera is arranged below the top of the support frame; the rotary overturning table is arranged on the conveying belt, when the metal cans on the conveying belt are conveyed to the overturning table, the metal cans are embedded into the arc-shaped grooves and are magnetically attracted and fixed by the magnetic attraction strips, and the overturning table is matched with the guide rollers to enable the metal cans to overturn and rotate, so that an industrial camera can conveniently and comprehensively sample and analyze surface image information of the metal cans; the dead angle that the industrial camera cannot carry out irradiation sampling when the industrial camera carries out image information sampling analysis on the surface of the metal can is avoided, and when the position of the metal can is adjusted, the industrial camera and the sampled surface of the metal can are located at a proper sampling angle all the time, so that the sampling image quality is ensured; therefore, the accuracy of subsequent analysis is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial vision detection, and particularly relates to an information acquisition device based on image recognition. Background Art

[0002] In an industrial vision detection system, the vision detection system is a key link to ensure product quality. Among them, the camera device, as the core component of image recognition, can collect various information such as the appearance and size of products. Details: Taking the production of electronic components as an example, a high-precision industrial camera can be installed at a specific position on the production line to detect appearance defects such as whether the pins of electronic components are bent and whether there are scratches on the surface of the components. The camera takes pictures of the components and uses the built-in image recognition algorithm to identify and analyze features such as the contour and surface texture of the components. The collected image information can be compared with the image template of standard components to quickly determine whether the product is qualified. Such a camera device plays an important role in quality control during the industrial automation production process.

[0003] In industrial production lines, during vision detection, products are generally placed on a conveyor belt for transportation and detected during the transportation process. For example, when inspecting whether the outer packaging of industrial products such as metal cans is damaged, and when it is usually necessary to comprehensively detect the printing quality and integrity of the outer packaging of metal cans, since the conveyor belt usually transports items in a straight line, this will result in the inability to collect image information of the side of the item facing away from the industrial camera, or the bottom surface of the item in contact with the top of the conveyor belt. Usually, two methods are used for processing. One is to use multiple groups of industrial cameras and arrange them at multiple workstations to facilitate the collection of image information at different angles. However, industrial cameras are high-precision detections, and too many installations will lead to an increase in equipment costs and subsequent maintenance costs, and the cost performance is not high. The other is to re-adjust the placement of the items for re-inspection to avoid the problem of incomplete detection, but this will also lead to a reduction in detection productivity and thus a reduction in the production efficiency of products. Therefore, an information acquisition device based on image recognition is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide an information acquisition device based on image recognition to solve the above problems and overcome the defects of the prior art, as described in detail below.

[0005] To achieve the above object, the present invention provides the following technical solutions: An information acquisition device based on image recognition provided by the present invention includes a conveyor belt, and a support frame is fixedly connected to the side of the conveyor belt, and an industrial camera is arranged below the top of the support frame; A flipping mechanism is arranged at a position above the conveyor belt on the support frame for flipping the items on the conveyor belt; The flipping mechanism includes a flipping table, the flipping table is rotatably connected to the support frame, a stepping motor for driving the flipping table to rotate is fixedly connected to the support frame, arc-shaped grooves are formed on both sides of the flipping table, a plurality of magnetic attraction strips are arranged inside the arc-shaped grooves, and guide rollers are rotatably connected to one ends of the magnetic attraction strips in contact with the items, and a driving component for driving the guide rollers to rotate is arranged on the top of the flipping table.

[0006] Preferably, a support plate is fixedly connected to the inner wall of the arc-shaped groove, a plurality of through grooves are formed in the inner wall of the support plate, and the through grooves are slidably connected to the magnetic attraction strips at corresponding positions.

[0007] Preferably, a limiting block is fixedly connected to one end of the magnetic attraction strip away from the guide roller.

[0008] Preferably, a plurality of guide wheels are rotatably connected to the outer wall of the guide roller, the guide roller rotates around a vertical axis, and the guide wheel rotates around a horizontal axis.

[0009] Preferably, a rubber ring is arranged on the outer wall of the guide wheel, and a one-way freewheel is arranged at the rotating shaft of the guide wheel, so that the guide wheel can only rotate in one direction.

[0010] Preferably, the driving component includes a plurality of driven wheels, the plurality of driven wheels are respectively fixedly connected to the corresponding guide rollers, a driving wheel is arranged on the top of the flipping table, and the driving wheel and the plurality of driven wheels are rotated by a transmission cable.

[0011] Preferably, limiting guide rings are arranged on the outer walls of the driving wheel and the driven wheels, and channels for the transmission cable to pass through are formed in the inner walls of the limiting guide rings.

[0012] Preferably, a plurality of joint blocks are fixedly connected to the transmission cable, a wire groove for embedding the transmission cable is formed in the outer wall of the driving wheel, a plurality of joint grooves for embedding the joint blocks are formed in the outer wall of the driving wheel, and the distance between the joint blocks is matched with the layout gap of the joint grooves. The structure of the driven wheel is the same as that of the driving wheel.

[0013] Preferably, a sliding groove is formed below the driving wheel on the flipping table, a sliding block is slidably connected to the inner wall of the sliding groove, a servo motor for driving the driving wheel to rotate is arranged on the inner wall of the sliding block, and a spring is fixedly connected to the side of the sliding block close to the arc-shaped groove inside the sliding groove.

[0014] Preferably, guide plates are respectively fixedly connected to both sides of the top of the conveyor belt near the feeding end.

[0015] The beneficial effects are as follows: 1. The present invention sets a rotating turning table on the conveyor belt. When the metal cans on the conveyor belt are conveyed to the turning table, the metal cans are embedded in the arc-shaped grooves and magnetically adsorbed and fixed by the magnetic adsorption strips. Through the cooperation of the turning table and the guide rollers, the metal cans are turned and rotated, so as to facilitate the industrial camera to comprehensively sample and analyze the image information on the surface of the metal cans, avoiding the dead angles where the industrial camera cannot perform irradiation sampling when sampling and analyzing the image information on the surface of the metal cans. Moreover, when adjusting the position of the metal cans, the industrial camera is always at a suitable sampling angle with the sampled surface of the metal cans, ensuring the quality of the sampled images, thereby improving the accuracy of subsequent analysis.

[0016] 2. The present invention sets a support plate in the arc-shaped groove, and makes the magnetic adsorption strips slide in the through grooves, so that the magnetic adsorption strips can slide freely within a certain range to adapt to the curvature of the surface of the metal cans and fit them, thereby increasing the range of adaptation of the device to metal cans of different diameters.

[0017] 3. The present invention sets rotatable guide wheels on the outer wall of the guide rollers. Before the turning table is about to rotate to 90 degrees to make the metal cans break away from the magnetic adsorption of the magnetic adsorption strips, the weight of the metal cans themselves will cause the metal cans to drop. Since the guide wheels are in rolling contact with the metal cans and the friction is small and cannot support the metal cans, the metal cans slide down slowly to contact the surface of the conveyor belt. When driving the metal cans to be lifted upward, due to the limitation of the one-way flower drum, the guide wheels cannot rotate. At this time, the guide wheels are in frictional contact with the metal cans, and the generated frictional force is large, so as to facilitate lifting the metal cans, avoiding the situation that the metal cans cannot resist the surface of the conveyor belt at the beginning of rotation due to the insufficient height of the metal cans, resulting in too small an angle between the metal cans and the conveyor belt when breaking away, and it is easy to occur situations such as the metal cans tipping and rolling, which are not conducive to subsequent conveying.

[0018] 4. The present invention sets the driven wheels to connect the guide rollers. When the servo motor drives the driving wheel to rotate, since the nodules on the transmission cable are embedded in the nodule grooves on the driving wheel, the transmission cable will move following the rotation of the driving wheel. Similarly, when the transmission cable moves, the driven wheels with nodules embedded in the nodule grooves will also rotate driven by the transmission cable, thus forming a transmission. Moreover, by setting springs between the sliding grooves and the sliders, the tension of the springs can push the driving wheels on the sliders to tighten the transmission cable to maintain the stability of the transmission, and allow the driven wheels to move within a certain range and then maintain the transmission state to cooperate with the expansion and contraction of the magnetic adsorption strips. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 is a schematic structural diagram of the overall appearance of the present invention; Figure 2 is a schematic structural diagram of the turntable in the present invention; Figure 3 is in the present invention Figure 2 an enlarged view of A in; Figure 4 is a schematic structural diagram of the support plate in the present invention; Figure 5 is a schematic structural diagram of the guide roller in the present invention; Figure 6 is a schematic structural diagram of the limit guide ring in the present invention; Figure 7 is a schematic structural diagram of the driving wheel in the present invention.

[0021] The description of the reference numerals is as follows: 1, conveyor belt; 2, support frame; 3, industrial camera; 4, stepper motor; 5, turntable; 6, arc groove; 7, magnetic strip; 8, guide roller; 9, support plate; 10, through groove; 11, limit block; 12, driven wheel; 13, driving wheel; 14, transmission cable; 15, limit guide ring; 16, wire groove; 17, joint groove; 18, joint block; 19, sliding groove; 20, slider; 21, spring; 22, guide wheel; 23, guide plate. Detailed Embodiments

[0022] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will describe the technical solutions of the present invention in detail. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0023] See Figure 1 - Figure 7As shown, the present invention provides an information collection device based on image recognition, including a conveyor belt 1, a support frame 2 is fixedly connected to the side of the conveyor belt 1, an industrial camera 3 is arranged below the top of the support frame 2, and is used to collect image information of metal cans, and a flipping mechanism is arranged at a position above the conveyor belt 1 on the support frame 2, and is used to flip the items on the conveyor belt 1, and the flipping mechanism includes a flipping table 5, and the flipping table 5 is rotatably connected to the support frame 2, and the initial state of the flipping table 5 is a horizontal state, and the metal cans are flipped by rotating ninety degrees each time, and a stepping motor 4 for driving the flipping table 5 to rotate is fixedly connected to the support frame 2, and the rotation direction of the stepping motor 4 is counterclockwise (reference Figure 1 ), arc grooves 6 are provided on both sides of the turning table 5, and a plurality of magnetic strips 7 are arranged inside the arc grooves 6, and the end of the magnetic strips 7 that contacts the object is rotatably connected to a guide roller 8, and a driving component for driving the guide roller 8 to rotate is arranged on the top of the turning table 5. In this scheme, a rotating turning table 5 is arranged on the conveyor belt 1. When the metal cans on the conveyor belt 1 are transported to the turning table 5, the metal cans are embedded in the arc grooves 6 and are magnetically fixed by the magnetic strips 7. The industrial camera 3 samples and analyzes the image of the top of the metal can. After a short pause, the stepper motor 4 drives the turning table 5 to rotate ninety degrees, driving the metal can to flip ninety degrees. At this time, the metal can is in a horizontal state, and the arc surface of the metal can faces the industrial camera 3, and the guide roller 8 is driven to rotate by the driving component, so that the metal can rolls on the upper guide roller 8, so as to facilitate the industrial camera 3 to sample and analyze the image information of the arc surface of the metal can. After a short pause, the stepper motor 4 drives the turning table 5 to rotate ninety degrees, driving the metal can to flip ninety degrees. At this time, the metal can is in an inverted state. The bottom part that was originally in contact with the top of the conveyor belt 1 is exposed to the industrial camera 3 to facilitate sampling and analysis. After a short pause, the stepper motor 4 drives the flip table 5 to rotate ninety degrees. Since the top of the conveyor belt 1 will press against the metal can, the metal can cannot rotate with the flip table 5, so that the metal can is separated from the magnetic attraction of the magnetic strip 7 in the arc groove 6, so that the conveyor belt 1 continues to transport the metal can. Magnetic strips 7 are arranged in the arc grooves 6 on both sides of the flip table 5, so that when the flip table 5 rotates, the magnetic strips 7 on both sides can alternately grab the metal can for sampling and analysis, which greatly improves the efficiency of detection and achieves the purpose of comprehensive sampling and analysis of the image information on the surface of the metal can, avoiding the dead angle where the industrial camera 3 cannot perform irradiation sampling when the industrial camera 3 samples and analyzes the image information on the surface of the metal can, and when adjusting the position of the metal can, the industrial camera 3 is always at a suitable sampling angle with the sampled surface of the metal can, ensuring the image quality of the sampling, thereby improving the accuracy of subsequent analysis.

[0024] In this embodiment, please refer to Figure 2 , Figure 4A support plate 9 is fixedly connected to the inner wall of the arc groove 6, and a plurality of through grooves 10 are opened on the inner wall of the support plate 9, and the through grooves 10 are slidably connected to the magnetic strips 7 at the corresponding positions, and one end of the magnetic strip 7 away from the guide roller 8 is fixedly connected to the limiting block 11, and the limiting block 11 can limit the magnetic strip 7 to prevent the magnetic strip 7 from leaving the through groove 10. By arranging the support plate 9 in the arc groove 6 and making the magnetic strip 7 slide in the through groove 10, the magnetic strip 7 can slide freely within a certain range to adapt to the curvature of the surface of the metal can and fit it, so as to increase the adaptability of the device to metal cans of different diameters.

[0025] For further information, see Figure 1 , Figure 2 , Figure 5 The outer wall of the guide roller 8 is connected to a plurality of guide wheels 22 for rotation. The guide roller 8 rotates around a vertical axis, and the guide wheel 22 rotates around a horizontal axis. A rubber ring is provided on the outer wall of the guide wheel 22, and a one-way hub is provided at the rotating shaft of the guide wheel 22, so that the guide wheel 22 can only rotate in one direction. By providing a rotatable guide wheel 22 on the outer wall of the guide roller 8, before the turning table 5 is ready to rotate to 90 degrees to make the metal cans separate from the magnetic adsorption of the magnetic adsorption strip 7, the weight of the metal cans themselves will cause the metal cans to fall. Since the guide wheels 22 are in rolling contact with the metal cans, friction The small friction force cannot support the metal can, so that the metal can slowly slides down and contacts the surface of the conveyor belt 1. When the metal can is lifted up, the guide wheel 22 cannot rotate due to the limitation of the one-way hub. At this time, the guide wheel 22 is in friction contact with the metal can, and the friction force generated is large, which is convenient for lifting the metal can, so as to avoid the situation that the metal can cannot be against the surface of the conveyor belt 1 at the beginning of rotation due to the insufficient height of the metal can, resulting in the angle between the metal can and the conveyor belt 1 being too small when detaching, and the metal can is prone to tipping and rolling, which is not conducive to subsequent transportation.

[0026] For further information, see Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7, the driving assembly includes a plurality of driven wheels 12. The plurality of driven wheels 12 are respectively fixedly connected to the guide rollers 8 at corresponding positions. A driving wheel 13 is arranged at the top of the flipping table 5, and the driving wheel 13 and the plurality of driven wheels 12 are rotated through a transmission cable 14. Limiting guide rings 15 are arranged on the outer walls of the driving wheel 13 and the driven wheels 12, and channels for the transmission cable 14 to pass through are opened on the inner walls of the limiting guide rings 15. By setting the limiting guide rings 15, it can be ensured that the transmission cable 14 always fits the driving wheel 13 and the driven wheels 12 during transmission. A plurality of joint blocks 18 are fixedly connected to the transmission cable 14. A wire groove 16 for embedding the transmission cable 14 is opened on the outer wall of the driving wheel 13, and a plurality of joint grooves 17 for embedding the joint blocks 18 are opened on the outer wall of the driving wheel 13, and the distance between the joint blocks 18 is matched with the layout gap of the joint grooves 17. The structure of the driven wheel 12 is the same as that of the driving wheel 13. A sliding groove 19 is opened below the driving wheel 13 on the flipping table 5. A slider 20 is slidably connected to the inner wall of the sliding groove 19. A servo motor for driving the driving wheel 13 to rotate is arranged on the inner wall of the slider 20. A spring 21 is fixedly connected to the side of the slider 20 close to the arc groove 6 inside the sliding groove 19. By setting the driven wheel 12 to be connected to the guide roller 8, when the servo motor drives the driving wheel 13 to rotate, since the joint blocks 18 on the transmission cable 14 will be embedded in the joint grooves 17 on the driving wheel 13, the transmission cable 14 will move following the rotation of the driving wheel 13. Similarly, when the transmission cable 14 moves, the driven wheels 12 with the joint blocks 18 embedded in the joint grooves 17 will also rotate driven by the transmission cable 14, thus forming a transmission. And by setting the spring 21 between the sliding groove 19 and the slider 20, the tension of the spring 21 can push the transmission cable 14 tightened by the driving wheel 13 on the slider 20 to maintain the stability of the transmission, and allow the driven wheels 12 to move within a certain range and then maintain the transmission state to cooperate with the expansion and contraction of the magnetic attraction strip 7.

[0027] In addition, please refer to Figure 1 , on both sides of the top of the conveyor belt 1 near the feeding end, guide plates 23 are respectively fixedly connected. By setting the guide plates 23, the metal cans on the conveyor belt 1 can be positioned to facilitate grasping.

[0028] Working principle During use, when the metal cans on the conveyor belt 1 are transported to the turning table 5, the metal cans are embedded in the arc groove 6, and because the magnetic strip 7 is slidably arranged in the through groove 10, the magnetic strip 7 can slide freely within a certain range to adapt to the curvature of the surface of the metal can and fit it. After the metal can is magnetically adsorbed and fixed by the magnetic strip 7, the industrial camera 3 samples and analyzes the image of the top of the metal can. After a short pause, the stepper motor 4 drives the turning table 5 to rotate ninety degrees, driving the metal can to turn ninety degrees. At this time, the metal can is in a horizontal state, and the arc surface of the metal can faces the industrial camera 3. At this time, the servo motor drives the driving wheel 13 to rotate. The node 18 on the transmission cable 14 will be embedded in the node groove 17 on the driving wheel 13, so that the transmission cable 14 will follow the rotation of the driving wheel 13. Similarly, when the transmission cable 14 moves, the driven wheel 12 with the node 18 embedded in the node groove 17 will also rotate under the drive of the transmission cable 14, thereby forming a transmission. A spring 21 is arranged between the slide groove 19 and the slider 20. The tension of the spring 21 can push the transmission cable 14 tensioned by the driving wheel 13 on the slider 20 to maintain the stability of the transmission, and by driving the guide roller 8 to rotate, the metal can rolls on the upper guide roller 8, so as to facilitate the industrial camera 3 to sample and analyze the image information of the arc surface of the metal can. After a short pause, the stepper motor 4 drives the flip table 5 to rotate 90 degrees, causing the metal can to flip 90 degrees. At this time, the metal can is in an upside-down state, and the bottom that was originally in contact with the top of the conveyor belt 1 is exposed to the industrial camera 3 to facilitate sampling and analysis. After a short pause, the stepper motor 4 drives the flip table 5 to rotate 90 degrees. Since the top of the conveyor belt 1 will press against the metal can, the metal can cannot rotate with the flip table 5, causing the metal can to break away from the magnetic attraction of the magnetic strip 7 in the arc groove 6, allowing the conveyor belt 1 to continue to transport the metal can, and before the flip table 5 is ready to rotate to 90 degrees to separate the metal can from the magnetic attraction of the magnetic strip 7, the metal can The metal cans will fall due to their own weight. Since the guide wheel 22 is in rolling contact with the metal cans, the friction is small and cannot support the metal cans, causing the metal cans to slowly slide down and contact the surface of the conveyor belt 1 to avoid the metal cans being unable to resist the surface of the conveyor belt 1 at the beginning of rotation due to insufficient height of the metal cans, resulting in the angle between the metal cans and the conveyor belt 1 being too small when detaching, which is conducive to the metal cans tipping over and rolling, and other situations that are not conducive to subsequent transportation. Magnetic strips 7 are provided in the arc grooves 6 on both sides of the turning table 5, so that when the turning table 5 rotates, the magnetic strips 7 on both sides can alternately grab the metal cans for sampling and analysis, which greatly improves the efficiency of detection.

[0029] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An information collection device based on image recognition, comprising a conveyor belt (1), characterized in that: A support frame (2) is fixedly connected to the side of the conveyor belt (1), and an industrial camera (3) is arranged below the top of the support frame (2); A turning mechanism is provided on the support frame (2) at a position above the conveyor belt (1), and is used to turn over the articles on the conveyor belt (1); The turning mechanism comprises a turning platform (5), the turning platform (5) is rotatably connected to a support frame (2), a stepping motor (4) for driving the turning platform (5) to rotate is fixedly connected to the support frame (2), arc grooves (6) are provided on both sides of the turning platform (5), a plurality of magnetic strips (7) are provided inside the arc grooves (6), and one end of the magnetic strip (7) in contact with the object is rotatably connected to a guide roller (8), and a driving component for driving the guide roller (8) to rotate is provided on the top of the turning platform (5).

2. The information collection device based on image recognition according to claim 1, characterized in that: A support plate (9) is fixedly connected to the inner wall of the arc-shaped groove (6), a plurality of through grooves (10) are provided on the inner wall of the support plate (9), and the through grooves (10) are slidably connected to the magnetic attraction strips (7) at corresponding positions.

3. The information collection device based on image recognition according to claim 2, characterized in that: One end of the magnetic attraction strip (7) away from the guide roller (8) is fixedly connected to a limiting block (11).

4. The information collection device based on image recognition according to claim 1, characterized in that: The outer wall of the guide roller (8) is rotatably connected to a plurality of guide wheels (22); the guide roller (8) rotates around a vertical axis, and the guide wheels (22) rotate around a horizontal axis.

5. The information collection device based on image recognition according to claim 4, characterized in that: The outer wall of the guide wheel (22) is provided with a rubber ring, and the rotating shaft of the guide wheel (22) is provided with a one-way hub, so that the guide wheel (22) can only rotate in one direction.

6. The information collection device based on image recognition according to claim 1, characterized in that: The driving assembly comprises a plurality of driven wheels (12), wherein the plurality of driven wheels (12) are respectively fixedly connected to guide rollers (8) at corresponding positions; a driving wheel (13) is arranged on the top of the turning platform (5), and the driving wheel (13) and the plurality of driven wheels (12) rotate via a transmission rope (14).

7. The information collection device based on image recognition according to claim 6, characterized in that: The outer walls of the driving wheel (13) and the driven wheel (12) are both provided with a limiting guide ring (15), and the inner wall of the limiting guide ring (15) is provided with a channel for the transmission rope (14) to pass through.

8. The information collection device based on image recognition according to claim 6, characterized in that: The transmission rope (14) is fixedly connected to a plurality of nodes (18); the outer wall of the driving wheel (13) is provided with a wire groove (16) for embedding the transmission rope (14); the outer wall of the driving wheel (13) is provided with a plurality of node grooves (17) for embedding the node blocks (18); the spacing between the node blocks (18) matches the spacing between the node grooves (17); and the structure of the driven wheel (12) is the same as that of the driving wheel (13).

9. The information collection device based on image recognition according to claim 8, characterized in that: The turning platform (5) is provided with a slide groove (19) below the driving wheel (13); a slider (20) is slidably connected to the inner wall of the slide groove (19); a servo motor for driving the driving wheel (13) to rotate is provided on the inner wall of the slider (20); and a spring (21) is fixedly connected to the slide groove (19) on one side of the slider (20) close to the arc groove (6).

10. The information collection device based on image recognition according to claim 1, characterized in that: Guide plates (23) are fixedly connected to the top of the conveyor belt (1) at positions close to the loading end.

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