An information collection device based on image recognition

Abstract

The present invention relates to the technical field of industrial vision detection, and discloses an information acquisition device based on image recognition, including a conveyor belt. 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. By providing a rotating turntable on the conveyor belt, when the metal cans on the conveyor belt are conveyed to the turntable, the metal cans are embedded in the arc-shaped grooves and magnetically adsorbed and fixed by the magnetic attraction strips. Through the cooperation of the turntable and the guide rollers, the metal cans are turned and rotated, so as to facilitate the industrial camera to comprehensively sample and analyze the surface image information of the metal cans, avoid dead angles where the industrial camera cannot perform irradiation sampling when sampling and analyzing the surface image information of the metal cans, and 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.

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 the standard component, so as to quickly judge whether the product is qualified. Such a camera device plays an important role in quality control during the industrial automation production process.

[0003] On an industrial production line, during vision detection, products are generally placed on a conveyor belt for transportation and detected during the transportation process. For example, when checking whether the outer packaging of industrial products such as metal cans is damaged, and usually a comprehensive detection of the printing quality and integrity of the outer packaging of metal cans is required. Since the conveyor belt usually transports items in a straight line, this will cause the side of the item facing away from the industrial camera or the bottom surface in contact with the top of the conveyor belt to be unable to collect image information. 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 arranged cameras 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 the detection production capacity, thus reducing 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 purpose, the present invention provides the following technical solutions:

[0006] An information acquisition device based on image recognition provided by the present invention includes a conveyor belt, a support frame fixedly connected to the side of the conveyor belt, and an industrial camera disposed below the top of the support frame;

[0007] A turning mechanism is arranged at a position above the conveyor belt on the support frame for turning the items on the conveyor belt;

[0008] The turning mechanism includes a turning table, the turning table is rotatably connected to the support frame, a stepping motor for driving the turning table to rotate is fixedly connected to the support frame, arc-shaped grooves are formed on both sides of the turning table, a plurality of magnetic attraction strips are arranged inside the arc-shaped grooves, and guide rollers are rotatably connected to one end 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 turning table.

[0009] 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.

[0010] Preferably, a limiting block is fixedly connected to one end of the magnetic attraction strip away from the guide roller.

[0011] 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.

[0012] Preferably, a rubber ring is arranged on the outer wall of the guide wheel, and a one-way flower drum is arranged at the rotating shaft of the guide wheel, so that the guide wheel can only rotate in one direction.

[0013] 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 turning table, and the driving wheel and the plurality of driven wheels are rotated by a transmission cable.

[0014] Preferably, limiting guide rings are arranged on the outer walls of the driving wheel and the driven wheels, and a channel for the transmission cable to pass through is formed in the inner wall of the limiting guide ring.

[0015] Preferably, a plurality of joint blocks are fixedly connected to the transmission cable, a wire groove for embedding the transmission cable is formed on the outer wall of the driving wheel, a plurality of joint grooves for embedding the joint blocks are formed on 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.

[0016] Preferably, a sliding groove is formed below the driving wheel on the turning 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 one side of the sliding block close to the arc-shaped groove inside the sliding groove.

[0017] Preferably, guide plates are respectively fixedly connected to both sides of the top of the conveyor belt near the feeding end.

[0018] The beneficial effects are as follows:

[0019] 1. The present invention arranges 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 groove and are fixed by magnetic attraction strips. The turning table cooperates with the guide roller to turn and rotate the metal cans, so as to facilitate the industrial camera to comprehensively sample and analyze the image information on the surface of the metal cans, avoid blind spots where the industrial camera cannot perform irradiation sampling when sampling and analyzing the image information on the surface of the metal cans, and 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, thereby ensuring the sampled image quality and improving the accuracy of subsequent analysis.

[0020] Second, the present invention arranges a support plate in the arc groove so that the magnetic strip can slide in the through groove, so that the magnetic strip can slide freely within a certain range to adapt to the curvature of the surface of the metal can and fit it, thereby increasing the adaptability of the device to metal cans of different diameters.

[0021] 3. The present invention provides a rotatable guide wheel on the outer wall of the guide roller. Before the turning table is ready to rotate to 90 degrees to separate the metal can from the magnetic attraction of the magnetic attraction strip, the weight of the metal can itself will cause the metal can to fall. Since the guide wheel is in rolling contact with the metal can, the friction is small and cannot support the metal can, so that the metal can slowly slides down and contacts the surface of the conveyor belt. When the metal can is driven to be lifted up, the guide wheel cannot rotate due to the limitation of the one-way hub. At this time, the guide wheel is in friction contact with the metal can, and the friction generated is large, so as to facilitate the lifting of the metal can and avoid the situation that the metal can cannot be against the surface of the conveyor belt 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 being too small when detaching, which is easy to cause the metal can to tip over and roll, which is not conducive to subsequent transportation.

[0022] Fourth, the present invention arranges a driven wheel to connect with the guide roller. When the servo motor drives the driving wheel to rotate, the node blocks on the transmission cable will be embedded in the node grooves on the driving wheel, so that the transmission cable will follow the rotation of the driving wheel. Similarly, when the transmission cable moves, the driven wheel with the node blocks embedded in the node grooves will also rotate driven by the transmission cable, thereby forming transmission. In addition, a spring is arranged between the slide groove and the slider. The tension of the spring can push the transmission cable tensioned by the driving wheel on the slider to maintain the stability of the transmission, and allow the driven wheel to maintain the transmission state after moving within a certain range to cooperate with the extension and retraction of the magnetic attraction strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or in the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying 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 accompanying drawings can be obtained based on these drawings.

[0024] Figure 1 is a schematic structural diagram of the overall appearance of the present invention;

[0025] Figure 2 is a schematic structural diagram of the turning table in the present invention;

[0026] Figure 3 is in the present invention Figure 2 is an enlarged view of A in;

[0027] Figure 4 is a schematic structural diagram of the support plate in the present invention;

[0028] Figure 5 is a schematic structural diagram of the guide roller in the present invention;

[0029] Figure 6 is a schematic structural diagram of the limit guide ring in the present invention;

[0030] Figure 7 is a schematic structural diagram of the driving wheel in the present invention.

[0031] The description of the reference numerals is as follows: 1, conveyor belt; 2, support frame; 3, industrial camera; 4, stepping motor; 5, turning table; 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 implementation manners

[0032] 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 a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope protected by the present invention.

[0033] See Figure 1 - Figure 7As shown in the figure, 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. Below the top of the support frame 2, an industrial camera 3 is provided for collecting image information of metal cans. A flipping mechanism is arranged at a position above the conveyor belt 1 on the support frame 2 for flipping the items on the conveyor belt 1. The flipping mechanism includes a flipping table 5. The flipping table 5 is rotatably connected to the support frame 2. The initial state of the flipping table 5 is a horizontal state, and the metal cans are flipped by ninety degrees each time. A stepping motor 4 for driving the rotation of the flipping table 5 is fixedly connected to the support frame 2. The rotation direction of the stepping motor 4 is counterclockwise rotation (reference Figure 1 ). Arc-shaped grooves 6 are opened on both sides of the flipping table 5. A number of magnetic attraction strips 7 are arranged inside the arc-shaped grooves 6. And a guide roller 8 is rotatably connected to one end of the magnetic attraction strip 7 in contact with the item. A driving component for driving the rotation of the guide roller 8 is arranged on the top of the flipping table 5. In this solution, by arranging a rotating flipping table 5 on the conveyor belt 1, when the metal cans on the conveyor belt 1 are transported to the flipping table 5, the metal cans are embedded in the position of the arc-shaped grooves 6 and are magnetically adsorbed and fixed by the magnetic attraction strips 7. Then the industrial camera 3 samples and analyzes the top image of the metal cans. After a short pause, the stepping motor 4 drives the flipping table 5 to rotate ninety degrees, driving the metal cans to flip ninety degrees. At this time, the metal cans are in a horizontal state, and the arc surface of the metal cans faces the industrial camera 3. And the driving component drives the guide roller 8 to rotate, so that the metal cans roll on the upper guide roller 8 to facilitate the industrial camera 3 to sample and analyze the image information of the arc surface of the metal cans. After a short pause, the stepping motor 4 drives the flipping table 5 to rotate ninety degrees, driving the metal cans to flip ninety degrees. At this time, the metal cans are in an inverted state, and the bottom that was originally in contact with the top of the conveyor belt 1 is exposed under the industrial camera 3 to facilitate sampling and analysis. After a short pause, the stepping motor 4 drives the flipping table 5 to rotate ninety degrees. Since the top of the conveyor belt 1 will resist the metal cans, the metal cans cannot follow the flipping table 5 to rotate, so that the metal cans are separated from the magnetic attraction of the magnetic attraction strips 7 in the arc-shaped grooves 6, and the conveyor belt 1 continues to transport the metal cans. And magnetic attraction strips 7 are arranged in the arc-shaped grooves 6 on both sides of the flipping table 5, so that when the flipping table 5 rotates, the magnetic attraction strips 7 on both sides can alternately grab the metal cans for sampling and analysis, greatly improving the detection efficiency and achieving the purpose of comprehensively sampling and analyzing the surface image information of the metal cans, avoiding the dead angle where the industrial camera 3 cannot perform irradiation sampling when sampling and analyzing the surface image information of the metal cans. And when adjusting the position of the metal cans, the industrial camera 3 is always at a suitable sampling angle with the surface of the metal cans to be sampled, ensuring the sampling image quality, thereby improving the accuracy of subsequent analysis.

[0034] 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.

[0035] 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.

[0036] For further information, see Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7, the driving assembly includes a plurality of driven wheels 12, and the plurality of driven wheels 12 are respectively fixedly connected to the guide rollers 8 at corresponding positions. A driving wheel 13 is arranged on the top of the turning 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 arranging 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 turning 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.

[0037] 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 arranging the guide plates 23, the metal cans on the conveyor belt 1 can be positioned to facilitate grasping.

[0038] Working principle

[0039] 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.

[0040] 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 flipping mechanism is arranged on the support frame (2) at a position above the conveyor belt (1) for flipping the articles on the conveyor belt (1); The flipping mechanism includes a flipping table (5), the flipping table (5) is rotatably connected to the support frame (2), a stepping motor (4) for driving the flipping table (5) to rotate is fixedly connected to the support frame (2), arc-shaped grooves (6) are formed on both sides of the flipping table (5), a plurality of magnetic attraction strips (7) are arranged inside the arc-shaped grooves (6), and a guide roller (8) is rotatably connected to one end of the magnetic attraction strip (7) in contact with the article. A driving assembly for driving the guide roller (8) to rotate is arranged on the top of the flipping table (5); A plurality of guide wheels (22) are rotatably connected to the outer wall of the guide roller (8), the guide roller (8) rotates around a vertical axis, and the guide wheels (22) rotate around a horizontal axis; A rubber ring is arranged on the outer wall of the guide wheel (22), and a one-way flower drum is arranged at the rotating shaft of the guide wheel (22), so that the guide wheel (22) can only rotate in one direction.

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

4. The information collection device based on image recognition according to claim 1, characterized in that: 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 on 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).

5. The information acquisition device based on image recognition according to claim 4, wherein: 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 formed in the inner walls of the limiting guide rings (15).

6. The information collection device based on image recognition according to claim 4, characterized in that: 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 formed in the outer wall of the driving wheel (13), a plurality of joint grooves (17) for embedding the joint blocks (18) are formed in 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).

7. The information acquisition device based on image recognition according to claim 6, characterized in that: A sliding groove (19) is formed in the flipping table (5) below the driving wheel (13), 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 in the inner wall of the slider (20), and a spring (21) is fixedly connected to the side of the sliding groove (19) close to the arc-shaped groove (6) inside the slider (20).

8. The information collection device based on image recognition according to claim 1, characterized in that: Guide plates (23) are respectively fixedly connected to both sides of the top of the conveyor belt (1) near the feeding end.

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