Screening and sorting device based on AI visual inspection

Abstract

The invention relates to the field of AI visual inspection, discloses a screening and sorting device based on AI visual inspection, and solves the problems that an AI detection algorithm is designed based on a flat surface sheet, lacks adaptive capacity to a deformation form, is difficult to segment an effective feature region, is easy to misjudge wrinkles and shadows as bar code stripes, or fails in recognition due to character breakage and distortion, and the like. The invention relates to a material screening and sorting device based on AI (artificial intelligence) visual inspection, which solves the problem that hidden dangers such as wrong sorting and missing sorting rate increase, sorting line interruption, soft package damage and the like are directly caused, and comprises a base, a support frame fixedly connected to one side above the base, and a wrinkled area for driving a first clamping plate and a second clamping plate to move in opposite directions through an electric push rod and clamping soft package packages, and then, the bar code area is straightened cooperatively, so that the bar code which is difficult to recognize due to package wrinkles and curls becomes flat and clear, and the recognition success rate and efficiency of an AI visual detector are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of AI visual inspection, specifically to a screening and sorting device based on AI visual inspection. Background Technology

[0002] With the development of the express delivery industry, flexible packaging (plastic bags, bubble wrap, etc.) has been widely used due to its advantages of being lightweight and low-cost, and its proportion in the total express delivery volume continues to rise. AI-based visual inspection screening and sorting devices have become core equipment in sorting centers. They use industrial cameras to collect images of waybills, and AI algorithms to extract barcodes, text, and other feature information to match sorting paths, driving the actuators to complete precise sorting, significantly improving sorting efficiency and reducing labor costs.

[0003] However, in practical applications, existing devices generally face the problem of inaccurate detection caused by the deformation of waybills when sorting flexible express packages, which seriously restricts sorting efficiency and accuracy. Flexible packaging is highly flexible but has poor rigidity. After the waybill is pasted, it is easy to change with the shape of the packaging during transfer, stacking, and transportation, resulting in wrinkles, stretching, or twisting: stacking and squeezing cause the packaging to dent, the waybill to have interlaced wrinkles, and the barcode and text to be divided into discontinuous segments; the tension during transportation or handling causes the waybill to stretch, the barcode stripe ratio to be distorted, and the text strokes to be twisted; irregular flexible packages (such as unevenly filled bubble wrap) make the waybill itself not flat, with local twisting, deviating from the normal characteristic shape.

[0004] Existing devices have significant technical limitations and cannot accurately detect deformed waybills: AI detection algorithms are based on flat waybill designs and lack the ability to adapt to deformed shapes. They are difficult to segment effective feature areas, and are prone to misjudging wrinkles and shadows as barcode stripes, or failing to recognize due to broken or distorted text. This problem directly leads to potential risks such as increased misclassification and omission rates, sorting line interruptions, and damage to soft packaging. Summary of the Invention

[0005] The purpose of this invention is to provide a screening and sorting device based on AI visual inspection. By using this device, the problems of AI detection algorithms based on flat sheet design lacking the ability to adapt to deformed shapes, making it difficult to segment effective feature areas, easily misjudging wrinkles and shadows as barcode stripes, or failing to recognize due to broken or distorted text, directly lead to problems such as increased misclassification and omission rates, sorting line interruption, and damage to soft packaging.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a screening and sorting device based on AI visual detection, comprising a base, a support frame fixedly connected to one side above the base, an AI visual detector fixedly connected to the upper inner side of the support frame, a discharge port disposed inside the base, a pusher fixedly connected to the side of the base away from the support frame, a feed channel fixedly connected to the base above the pusher, a distributor disposed inside the discharge port, and a pushing mechanism disposed on the other side above the base. Two sets of pushing mechanisms are symmetrically arranged about the central axis of the base, and an elastic mechanism is disposed on one side of the pushing mechanism.

[0007] Preferably, the pushing mechanism includes an electric push rod fixedly connected to the other side above the base. The output end of the electric push rod is fixedly connected to a second push plate. The inner side of the second push plate is provided with a sliding groove. The inner side of the sliding groove is provided with a slider. The lower end of the slider is fixedly connected to a first push plate. The inside of the first push plate is provided with a first groove. The inner side of the first groove is vertically slidably connected to a first clamping plate. The middle inner wall of the support frame is provided with a first guide groove. The inner side of the first guide groove is provided with a first guide rod fixedly connected to the slider.

[0008] Preferably, the width of the slider on the side closer to the electric actuator is greater than the width of the slider on the side farther from the electric actuator.

[0009] Preferably, the side of the first clamping plate near the electric push rod and the side of the first push plate near the electric push rod are on the same vertical plane.

[0010] Preferably, point a is provided on the outer side of the first guide groove near the AI ​​vision detector, point b is provided on the inner side of the first guide groove near the AI ​​vision detector, point c is provided on the outer side of the first guide groove away from the AI ​​vision detector, and point d is provided on the inner side of the first guide groove away from the AI ​​vision detector. The horizontal height of point a of the first guide groove is higher than the horizontal height of point c of the first guide groove, and the horizontal height of point d of the first guide groove is lower than the horizontal height of point d of the first guide groove.

[0011] Preferably, the elastic mechanism includes a connecting plate that is laterally slidably connected to the slider on the side near the support frame. The inner walls of both sides of the support frame are provided with a third groove. A spring is provided inside the third groove. One end of the spring is fixedly connected to a baffle that is laterally slidably connected to the support frame. The connection between the baffle and the connecting plate is a vertical sliding connection. A third push plate is fixedly connected to the lower end of the connecting plate. A second groove is provided on the inner side of the third push plate. A second clamping plate is vertically slidably connected to the inner side of the second groove.

[0012] Preferably, the side of the second clamping plate away from the electric push rod is on the same vertical plane as the side of the second clamping plate away from the electric push rod.

[0013] 1. The screening and sorting device based on AI visual inspection proposed in this invention uses an electric push rod to drive the first clamping plate and the second clamping plate to move towards each other and clamp the wrinkled area of ​​the soft packaging. Then, they work together to straighten the barcode area, so that the barcode that is difficult to identify due to packaging wrinkles and curling becomes flat and clear, which significantly improves the recognition success rate and efficiency of the AI ​​visual detector.

[0014] 2. The screening and sorting device based on AI visual inspection proposed in this invention can push away slight obstructions such as dust and water stains that may be attached to the barcode during the process of the first clamp sliding laterally on the surface of the barcode. This straightens the barcode and further cleans the recognition area, creating better imaging conditions for AI visual inspection.

[0015] 3. The screening and sorting device based on AI vision detection proposed in this invention adopts a vertical sliding connection design for the first clamping plate, which can adaptively adjust its height and maintain a close fit when contacting soft packaging of different thicknesses. This enables the device to stably and reliably handle express parcels of various specifications, improving the versatility and adaptability of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the second pusher plate structure of the present invention;

[0018] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle;

[0019] Figure 4 For the present invention Figure 2 Schematic diagram of the structure at point B;

[0020] Figure 5 This is a schematic diagram of the right-side cross-sectional structure of the base of the present invention.

[0021] In the diagram: 1. Base; 2. Support frame; 3. AI vision detector; 4. Discharge port; 5. Pusher; 6. Feed channel; 7. Distributor; 8. Pushing mechanism; 9. Elastic mechanism; 81. Electric push rod; 82. Second push plate; 83. Slide groove; 88. Slider; 84. First push plate; 85. First clamping plate; 86. First guide groove; 87. First guide rod; 89. First groove; 91. Connecting plate; 92. Third groove; 93. Spring; 94. Baffle; 95. Third push plate; 96. Second groove; 97. Second clamping plate. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-5 The present invention provides a technical solution: a screening and sorting device based on AI visual inspection, comprising a base 1, a support frame 2 fixedly connected to one side above the base 1, an AI visual detector 3 (existing technology, whose principle is to acquire visual information of the detection target through an image acquisition device, perform intelligent analysis using a deep learning algorithm, and finally complete tasks such as sorting, positioning or quality judgment through an execution mechanism, such as Hikvision MV-CS050-10GM, UnitX-FleX, etc.) set inside the base 1, a pusher 5 fixedly connected to the side of the base 1 away from the support frame 2, a feed channel 6 fixedly connected to the base 1 above the pusher 5, a separator 7 set inside the discharge port 4, and a pushing mechanism 8 set on the other side above the base 1. Two sets of pushing mechanisms 8 are symmetrically arranged about the central axis of the base 1, and an elastic mechanism 9 is set on one side of the pushing mechanism 8.

[0024] The pushing mechanism 8 includes an electric push rod 81 fixedly connected to the other side above the base 1. The output end of the electric push rod 81 is fixedly connected to a second push plate 82. The inner side of the second push plate 82 is provided with a sliding groove 83. The inner side of the sliding groove 83 is provided with a slider 88. The lower end of the slider 88 is fixedly connected to a first push plate 84. The inside of the first push plate 84 is provided with a first groove 89. The inner side of the first groove 89 is vertically slidably connected to a first clamping plate 85. The middle inner wall of the support frame 2 is provided with a first guide groove 86. The inner side of the first guide groove 86 is provided with a first guide rod 87 fixedly connected to the slider 88.

[0025] The width of the slider 88 on the side closer to the electric actuator 81 is greater than the width of the slider 88 on the side farther away from the electric actuator 81.

[0026] The side of the first clamping plate 85 near the electric push rod 81 is on the same vertical plane as the side of the first push plate 84 near the electric push rod 81.

[0027] Point a is provided on the outer side of the first guide groove 86 near the AI ​​vision detector 3, and point b is provided on the inner side of the first guide groove 86 near the AI ​​vision detector 3. Point c is provided on the outer side of the first guide groove 86 away from the AI ​​vision detector 3, and point d is provided on the inner side of the first guide groove 86 away from the AI ​​vision detector 3. The horizontal height of point a of the first guide groove 86 is higher than the horizontal height of point c of the first guide groove 86, and the horizontal height of point d of the first guide groove 86 is lower than the horizontal height of point d of the first guide groove 86.

[0028] The elastic mechanism 9 includes a connecting plate 91 that is laterally slidably connected to the slider 88 on the side near the support frame 2. The inner walls of both sides of the support frame 2 are provided with a third groove 92. A spring 93 is provided inside the third groove 92. One end of the spring 93 is fixedly connected to a baffle 94 that is laterally slidably connected to the support frame 2. The baffle 94 is connected to the connecting plate 91 in a vertical sliding connection. The lower end of the connecting plate 91 is fixedly connected to a third push plate 95. The inner side of the third push plate 95 is provided with a second groove 96. The inner side of the second groove 96 is vertically slidably connected to a second clamping plate 97.

[0029] The side of the second clamping plate 97 away from the electric push rod 81 is on the same vertical plane as the side of the second clamping plate 97 away from the electric push rod 81.

[0030] When it is necessary to screen and sort the express packages, the packages slide down from the feed channel 6 onto the base 1. The electric push rod 81 on one side is activated, causing the first guide rod 87 to move to point a on the upper inner side of the first guide groove 86, pushed by the second push plate 82 and the slider 88 to point a on the first guide groove 86. Then, the electric push rod 81 is activated, causing the first guide rod 87 to move back, reaching the lower inner side of the first guide groove 86. This causes the first push plate 84 and the first clamping plate 85 to move downwards. The movement causes the first clamping plate 85 to slide laterally against the upper surface of the package under the action of gravity, pushing the folds to one side. When the first clamping plate 85 and the second clamping plate 97 are in contact, the folds are clamped. At this time, the electric push rod 81 at the other end is activated to repeat the above action. When the first clamping plate 85 and the second clamping plate 97 at the other end are in contact, the two electric push rods 81 are activated to pull simultaneously, straightening the barcode of the soft package. The AI ​​vision detector 3 performs AI vision detection on the barcode of the soft package to reduce recognition failures and improve detection efficiency.

[0031] After the test is completed, a command is sent to the distributor 7 to open the corresponding pipeline. The electric push rod 81 drives the first clamping plate 85 to reset, loosening the soft package. The pusher 5 is then started to send the soft package into the inside of the outlet 4, ready for the next test.

[0032] Because the first clamp 85 slides laterally on the barcode of the soft packaging when it moves, it can push away some of the obstructions, reduce recognition failures, and improve detection efficiency.

[0033] Because the first clamping plate 85 is located above the base 1 when not being inspected, and does not contact the upper surface of the base 1, the first clamping plate 85 will extend and retract when it comes into contact with the soft packaging, and then pull the soft packaging, so that soft packaging of different thicknesses can be inspected.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screening and sorting device based on AI visual inspection, comprising a base (1), a support frame (2) fixedly connected to one side above the base (1), an AI visual detector (3) fixedly connected to the inner side above the support frame (2), a discharge port (4) arranged in the base (1), a pusher (5) fixedly connected to the side of the base (1) away from the support frame (2), an inlet channel (6) fixedly connected to the base (1) above the pusher (5), and a distributor (7) arranged in the discharge port (4), characterized in that: a pushing mechanism (8) is arranged on the other side above the base (1), the pushing mechanism (8) is used to drive the execution component to move along the preset trajectory, so as to flatten the surface wrinkles of the soft package in the detection station and transversely tension the barcode area, and to prepare for AI visual inspection; the pushing mechanism (8) is symmetrically arranged about the center axis of the base (1) in two groups; an elastic mechanism (9) is arranged on one side of the pushing mechanism (8), the elastic mechanism (9) is used to cooperate with the execution component of the pushing mechanism (8) to jointly clamp and straighten the package barcode, and to adapt to different thicknesses of the package by using the elastic structure.

2. The AI vision detection based screening and sorting device according to claim 1, characterized in that: the pushing mechanism (8) comprises an electric push rod (81) fixedly connected to the other side above the base (1), the output end of the electric push rod (81) is fixedly connected with a second push plate (82), the inner side of the second push plate (82) is provided with a sliding groove (83), the inner side of the sliding groove (83) is provided with a sliding block (88), the lower end of the sliding block (88) is fixedly connected with a first push plate (84), the inside of the first push plate (84) is provided with a first recess (89), the inner side of the first recess (89) is vertically slidably connected with a first clamping plate (85), a first guide groove (86) is formed in the middle inner wall of the support frame (2), and the inner side of the first guide groove (86) is provided with a first guide rod (87) fixedly connected with the sliding block (88).

3. The screening and sorting device based on AI visual inspection according to claim 2, wherein the width of the sliding block (88) on the side close to the electric push rod (81) is greater than the width of the sliding block (88) on the side away from the electric push rod (81).

4. The AI vision detection based screening and sorting device according to claim 2, characterized in that: the first clamping plate (85) on the side close to the electric push rod (81) is on the same vertical plane as the side of the first push plate (84) close to the electric push rod (81).

5. The AI vision detection based screening and sorting device according to claim 2, characterized in that: a point is arranged on the outer side of one end of the first guide groove (86) close to the AI visual detector (3), a point is arranged on the inner side of one end of the first guide groove (86) close to the AI visual detector (3), a point is arranged on the outer side of the other end of the first guide groove (86) away from the AI visual detector (3), and a point is arranged on the inner side of the other end of the first guide groove (86) away from the AI visual detector (3), the horizontal height of the point is higher than the horizontal height of the point, and the horizontal height of the point is lower than the horizontal height of the point. 6.The AI vision detection based screening and sorting device according to claim 2, characterized in that: The elastic mechanism (9) comprises a connecting plate (91) transversely and slidingly connected to the slider (88) close to one side of the support frame (2), the inner walls of the two sides of the support frame (2) are provided with third grooves (92), the inside of the third grooves (92) is provided with springs (93), one end of the spring (93) is fixedly connected with a baffle (94) transversely and slidingly connected with the support frame (2), the connecting mode of the baffle (94) and the connecting plate (91) is vertical sliding connection, the lower end of the connecting plate (91) is fixedly connected with a third push plate (95), the inner side of the third push plate (95) is provided with a second groove (96), the inside of the second groove (96) is vertically and slidingly connected with a second clamping plate (97).

7. The AI vision detection based screening and sorting device according to claim 6, characterized in that: The side face, away from the electric push rod (81), of the second clamping plate (97) is on the same vertical plane as the side face, away from the electric push rod (81), of the second clamping plate (97).

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