A packaging box printing sorting device based on visual recognition

Abstract

The application belongs to the technical field of visual detection, and particularly relates to a packaging box printing sorting device based on visual identification. The packaging box printing sorting device comprises a product inspection machine. The product inspection machine comprises a feeding part, a conveying part, a detection part and a waste kicking part group. The conveying part comprises a conveying belt. First side plates are arranged on both sides of the conveying belt. First suction grooves are arranged on the surface of the conveying belt. First air extraction chambers are arranged on the inner ring of the conveying belt. A missing groove is arranged on each of the first side plates. An exclusion assembly is arranged above the missing groove. The exclusion assembly comprises a driving belt. Second suction grooves are arranged on the surface of the driving belt. A distance is left between the driving belt and the conveying belt. Second side plates are arranged on both sides of the driving belt. Second air extraction chambers are arranged in the driving belt. The product inspection machine can effectively remove the stacked material packaging box from the detection conveying process, so that the stacked material packaging box is prevented from entering the detection part.

Description

Technical Field

[0001] This invention belongs to the field of visual inspection technology, specifically a packaging box printing and sorting device based on visual recognition. Background Technology

[0002] The core equipment for visual inspection of cigarette boxes is the inspection machine, an automated inspection system integrating an industrial camera, high-definition lens, industrial light source, image processing system, conveying mechanism, and rejection mechanism. It is specifically designed to meet the appearance inspection needs of precision printed packaging boxes such as cigarette boxes. The inspection machine uses visual imaging technology as its core, employing an industrial camera to take high-speed, high-definition photos of the cigarette boxes during transport. The acquired images are transmitted to the image processing system, where they are compared pixel-by-pixel with preset standard cigarette box images for feature analysis. Using preset defect thresholds, it automatically identifies various printing and manufacturing defects on the cigarette box surface. The rejection mechanism then automatically removes unqualified products, achieving automated and standardized cigarette box inspection, significantly improving inspection efficiency and accuracy while reducing manual intervention and lowering manual inspection costs. Adapting to the pace of large-scale cigarette box production, it has become an indispensable key inspection device on cigarette box production lines.

[0003] The operation process of visual inspection of cigarette boxes can be summarized into the following key steps: First, the printed cigarette boxes, whether semi-finished or finished, are neatly placed in the loading section of the inspection machine. The loading mechanism then transports the cigarette boxes individually and systematically to the inspection area. Second, the industrial light source in the inspection area provides uniform and interference-free illumination, avoiding reflections from the special processes on the cigarette box surface that could affect image quality. Simultaneously, an industrial camera takes high-speed photos of the transported cigarette boxes, capturing complete images of the front, back, and edges. Finally, if a defective cigarette box is detected, the conveyor mechanism transports it to the rejection area, where it is automatically rejected. Qualified cigarette boxes continue through the conveyor channel to subsequent processes such as gluing and packaging, completing the entire visual inspection process.

[0004] However, cigarette boxes are mostly made of high-grammage white cardboard, gold and silver cardboard, laser cardboard, and other insulating materials. These materials are prone to generating static electricity during pre-processing such as printing, lamination, and die-cutting due to high-speed friction and peeling. This static electricity is difficult to dissipate naturally and accumulates continuously on the surface of the cigarette box. When statically charged cigarette boxes enter the loading section of the inspection machine, the attraction of static electricity causes adjacent cigarette boxes to attract and stick together, forming a stacked phenomenon. Some stacks are perfectly aligned, while others are obliquely misaligned. For these stacked cigarette boxes, the industrial camera of the inspection machine can only capture an image of the topmost cigarette box. The cigarette boxes below are completely obscured and cannot be imaged by the camera, making any visual inspection impossible. Consequently, the uninspected cigarette boxes below are mistakenly judged as qualified products and directly flow into subsequent processes. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a packaging box printing and sorting device based on visual recognition. By setting up an inspection machine, stacked packaging boxes can be effectively removed from the inspection and conveying process, preventing stacked packaging boxes from entering the inspection department; the specific structure is as follows; A visual recognition-based packaging box printing and sorting device includes an inspection machine; the inspection machine includes a feeding section, a conveying section, an inspection section, and a waste removal section. The conveying unit includes a conveyor belt; the conveyor belt is provided with first side plates on both sides, and the conveyor belt rotates between the two first side plates via a rotating shaft and is driven by a first motor; the first side plates are mounted on a workbench. The surface of the conveyor belt is provided with uniformly arranged first suction grooves; the inner ring of the conveyor belt is provided with uniformly arranged first suction chambers, adjacent first suction chambers are fitted together, and the first suction chambers are all fixed on the first side plates on both sides. The opening of the first suction chamber faces upward and is in contact with the inner ring of the conveyor belt; suction pipes are evenly arranged on the first side plate. A separation component is provided on the left side of the conveyor belt; Both first side plates have notches; a packaging box is conveyed on the conveyor belt, and the top plane of the packaging box is flush with the bottom plane of the notch; An ejection assembly is provided above the notch; the ejection assembly includes a drive belt, which is located above the conveyor belt and perpendicular to it; the surface of the drive belt has evenly arranged second suction grooves; there is a distance between the drive belt and the conveyor belt, and this distance is the same as the thickness of the packaging box; the sides of the drive belt are rounded. The drive belt is provided with second side plates on both sides, and the drive belt rotates inside the second side plates by a rotating roller and is driven by a second motor; the drive belt is provided with a second air extraction chamber inside, and the second air extraction chamber is located above the conveyor belt, with the opening of the second air extraction chamber facing downward and fixed on the second side plate. A detection unit is located on the right side of the notch.

[0006] In a preferred embodiment of the present invention, the detection unit includes a detection chamber, and the detection chamber is installed on the right side of the notch. The detection chamber is equipped with a high-speed camera; light sources are located on both sides of the high-speed camera. The separation component includes a through groove; the left side of the notched groove is provided on the first side plate; an ion air bar is provided in the through groove, and the left and right sides of the ion air bar are installed in the through groove, with gaps between the upper and lower sides of the ion air bar and the through groove. The ion bar is connected to an electrostatic sensor, which is used to detect static electricity on the surface of the packaging box. A blower chamber is provided on the opposite side of the first side plate, and the through groove is located inside the blower chamber; an air pipe is installed on the blower chamber.

[0007] In a preferred embodiment of the present invention, grooves are formed on opposite sides of the two first side plates, and the bottom plane of the grooves is flush with the top plane of the conveyor belt. Below the through groove, inside the first side plate, there is a driven belt that rotates, and the bottom of the driven belt is in contact with the bottom plane of the groove; the overall thickness of the driven belt is greater than the sum of the thicknesses of the two packaging boxes; The driven belt rotates within the first side plate via a rotating shaft, which extends above the first side plate and is driven by a third motor. The two first side plates have guide grooves on opposite sides, and the middle of the guide grooves protrudes upward; the driven belt slides in the guide grooves.

[0008] In a preferred embodiment of the present invention, the surface of the driven belt is a smooth surface; The outer ring surface of the driven belt is provided with uniformly arranged air passages; the lower part of the through groove is provided with uniformly arranged vertical grooves, and the vertical grooves are all connected to the blowing chamber and are arranged alternately with the air passages.

[0009] In a preferred embodiment of the present invention, an inclined plate is installed on the right side of the second side plate; The length of the inclined plate is greater than the maximum distance between the two first side plates; the bottom of the inclined plate is flat, and grooves extend from both sides of the inclined plate; there is a distance between the bottom plane of the inclined plate and the conveyor belt, which is slightly greater than the thickness of the packaging box.

[0010] In a preferred embodiment of the present invention, two rectangular slots are formed on the inclined plate, and the rectangular slots are respectively located above the first side plate; Both rectangular slots have rotating rods mounted on top of them via rotating bases, and these rotating rods are driven by a fourth motor. The outer ring of each rotating rod is equipped with evenly arranged paddle plates, which are in contact with the bottom plane of the slot.

[0011] In a preferred embodiment of the present invention, the lever includes a fixed chamber and a sliding plate; The fixed chamber is fixed to the rotating rod; the fixed chamber is equipped with a sliding plate, and the sliding plate slides in the fixed chamber by means of a spring; the two sliding plates are respectively located above the two first side plates and partially extend between the two first side plates.

[0012] In a preferred embodiment of the present invention, a cleaning component is provided between the defect and the detection unit; The cleaning assembly includes a top plate; the top of the two first side plates is provided with a top plate; the top plate has a groove; and a ventilation chamber is installed above the top plate. An ion air bar is also installed below the top plate; Collection chambers are installed on both sides of the top plate, opposite to the first side plate; evenly distributed circular grooves are formed on the first side plate; the circular grooves are connected to the collection chambers. The top plate is provided with upright plates on both sides, and the upright plates are located on both sides of the top plate; a rotating shaft is provided below the upright plate, and an annular layer is provided on the outer surface of the rotating shaft, and the annular layer is filled with gas; the right side of the detection chamber is also provided with an upright plate, a rotating shaft and an annular layer.

[0013] In a preferred embodiment of the present invention, a rotating cylinder is provided between adjacent circular grooves, and the rotating cylinder extends into the collection chamber. The rotating drum is divided by the middle, and there are mirrored cleaning strips on both sides of the dividing line. The cleaning strips are spiral-shaped. One side of the rotating drum that extends into the collection chamber is driven by a fifth motor. The rotating drum has suction holes.

[0014] The beneficial effects of this invention are as follows: 1. The present invention discloses a packaging box printing and sorting equipment based on visual recognition. By first eliminating static electricity from the packaging boxes, stacked packaging boxes can no longer attract each other. Then, through the structural adaptation design of the discharge component and the conveyor section, and by using a design that matches the gap between the drive belt and the conveyor belt to the thickness of the packaging boxes, combined with the adsorption cooperation of the first suction groove and the first air extraction chamber of the conveyor belt and the second suction groove and the second air extraction chamber of the drive belt, the stacked packaging boxes are accurately separated: the lower packaging box is stably attracted by the conveyor belt, and the upper packaging box is attracted by the drive belt and moves out of the conveyor line with its rotation. This effectively removes stacked packaging boxes from the inspection and conveying process, completely avoiding the problem that the lower packaging box cannot be photographed and inspected by the high-speed camera after the stacked packaging boxes enter the inspection section due to being blocked. This eliminates the quality control risk of uninspected packaging boxes flowing into subsequent processes and ensures the full coverage of visual inspection.

[0015] 2. The packaging box printing and sorting equipment based on visual recognition described in this invention introduces clean gas into the conveyor belt through a blowing chamber. The airflow blows off impurities that have lost their adhesion to the surface of the packaging boxes. Simultaneously, the suction effect of the first suction chamber and the first suction groove in the conveying section is used to promptly suck in and collect the blown-off impurities. This achieves simultaneous static electricity elimination and impurity cleaning, effectively avoiding the problem of impurities adhering to the surface of the packaging boxes being misjudged as stains, dirt spots, or other printing defects by the high-speed camera. This improves the accuracy of visual inspection and reduces the generation of false waste products. At the same time, by adsorbing the packaging boxes onto the conveyor belt, it can prevent the packaging boxes from tilting, bouncing, or shifting during the transportation process, ensuring that the packaging boxes enter the inspection section in a standard posture. This allows the high-speed camera to capture complete and clear images of the packaging boxes, providing a guarantee for accurate comparison and defect identification by the image processing system, and improving the overall accuracy of visual inspection.

[0016] 3. The visual recognition-based packaging box printing and sorting equipment of this invention utilizes a structural design with an upward protrusion in the middle of the guide groove, combined with the sliding characteristics of the driven belt along the guide groove, allowing the driven belt to complete its upward movement synchronously with the guide groove. Because the bottom packaging boxes are stably adsorbed and fixed by the first suction groove of the conveyor belt, the lifting force of the driven belt only acts on the stacked upper packaging boxes, causing them to form an upward separation trend. This achieves forced physical separation for stubborn stacked materials that have not separated due to intermolecular adsorption after the ion air bar neutralizes static electricity. This, together with the static electricity neutralization of the ion air bar, forms a double separation guarantee, thereby solving the problem of incomplete separation of stacked materials. When the driven belt lifts and creates a small separation gap between the stacked packaging boxes, the clean gas from the blowing chamber is precisely blown into the gap between the two boxes through the vertical groove and air channel, forming an air cushion layer in the gap between the packaging boxes. This breaks the residual adsorption force between the stacked packaging boxes, greatly improving the success rate of stacked material separation and ensuring that no stacked packaging boxes enter the subsequent inspection stage. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is an overall diagram of the inspection machine of this invention; Figure 2 This is a diagram showing the separation structure of the inspection machine of the present invention; Figure 3 This is a structural diagram of the separation component in this invention; Figure 4 This is a structural diagram excluding the components in this invention; Figure 5 This is a structural diagram of the cleaning component in this invention; Figure 6 This is the present invention. Figure 5 Enlarged view of a portion of point A in the middle; Figure 7 This is a top view of the inspection machine of the present invention; Figure 8 This is the present invention. Figure 7 Sectional view at the middle BB step; Figure 9 This is the present invention. Figure 8 Enlarged view of a section at point C; Figure 10 This is the present invention. Figure 8 Enlarged view of a section at point D; Figure 11 This is the present invention. Figure 8 Enlarged view of a section at point E in the middle; Figure 12 This is the present invention. Figure 8 Enlarged view of a section at point F.

[0019] In the diagram: 1. Workbench; 11. Conveyor belt; 12. First suction trough; 13. First suction chamber; 14. First side plate; 15. Notched trough; 16. Detection chamber; 17. High-speed camera; 2. Drive belt; 21. Second suction trough; 22. Second side plate; 23. Second suction chamber; 3. Through trough; 31. Ionizing air bar; 32. Blowing chamber; 33. Groove; 34. Driven belt; 35. Guide trough; 36. Air passage; 37. Vertical trough; 4. Inclined plate; 41. Rectangular trough; 42. Rotating rod; 43. Fixed chamber; 44. Slide plate; 5. Top plate; 51. Tank body; 52. Ventilation chamber; 53. Collection chamber; 54. Circular trough; 6. Vertical plate; 61. Rotating shaft; 62. Annular layer; 7. Rotating drum; 71. Cleaning strip; 72. Suction hole. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] like Figures 1 to 12 As shown, the packaging box printing and sorting equipment based on visual recognition described in this invention, as an embodiment of this invention, includes an inspection machine; the inspection machine includes a feeding section, a conveying section, an inspection section, and a waste removal section group; The conveying unit includes a conveyor belt 11; the conveyor belt 11 is provided with first side plates 14 on both sides, and the conveyor belt 11 rotates between the two first side plates 14 via a rotating shaft 61 and is driven by a first motor; the first side plates 14 are mounted on the workbench 1. The surface of the conveyor belt 11 is provided with uniformly arranged first suction grooves 12; the inner ring of the conveyor belt 11 is provided with uniformly arranged first suction chambers 13, adjacent first suction chambers 13 are attached to each other, and the first suction chambers 13 are all fixed on the first side plates 14 on both sides. The opening of the first suction chamber 13 faces upward and is in contact with the inner ring of the conveyor belt 11; suction pipes are evenly arranged on the first side plate 14. A separation component is provided on the left side of the conveyor belt 11; Both of the first side plates 14 are provided with notches 15; a packaging box is conveyed on the conveyor belt 11, and the top plane of the packaging box is flush with the bottom plane of the notch 15; An ejection assembly is provided above the notch 15; the ejection assembly includes a drive belt 2, which is located above the conveyor belt 11 and perpendicular to the conveyor belt 11; the surface of the drive belt 2 is provided with evenly arranged second suction grooves 21; there is a distance between the drive belt 2 and the conveyor belt 11, and this distance is the same as the thickness of the packaging box; the sides of the drive belt 2 are rounded. The drive belt 2 is provided with second side plates 22 on both sides, and the drive belt 2 rotates inside the second side plates 22 by a rotating roller and is driven by a second motor; the drive belt 2 is provided with a second air extraction chamber 23 inside, and the second air extraction chamber 23 is located above the conveyor belt 11, and the opening of the second air extraction chamber 23 faces downward and is fixed on the second side plates 22. A detection unit is provided on the right side of the notch 15; In this embodiment, the detection unit includes a detection chamber 16, and the detection chamber 16 is installed on the right side of the notch 15; A high-speed camera 17 is installed inside the detection chamber 16; light sources are provided on both sides of the high-speed camera 17. The separation component includes a through groove 3; the left side of the notch 15 is provided on the first side plate 14 with the through groove 3; the through groove 3 is provided with an ion air bar 31, and the left and right sides of the ion air bar 31 are installed in the through groove 3, and there is a gap between the upper and lower sides of the ion air bar 31 and the through groove 3. The ion bar 31 is connected to an electrostatic sensor, which is used to detect static electricity on the surface of the packaging box. A blower chamber 32 is provided on the opposite side of the first side plate 14, and the through groove 3 is located inside the blower chamber 32; an air pipe is installed on the blower chamber 32.

[0022] During implementation, when inspecting the packaging boxes, the inspection machine is first started, and then the packaging boxes to be inspected are placed in the paper feeding section. The paper feeding section then transfers the packaging boxes sequentially onto the conveyor belt 11. At the same time, the first motor drives the conveyor belt 11 to rotate in a cycle, thereby moving the packaging boxes sequentially. Simultaneously, the suction pipe on the outside of the first suction chamber 13 is connected to an external vacuum cleaner to extract air from the first suction chamber 13. Since the conveyor belt 11 passes over multiple first suction chambers 13, and since the surface of the conveyor belt 11 has evenly arranged first suction grooves 12, when the packaging box moves on the conveyor belt 11, the first suction chamber 13 will extract the gas above the conveyor belt 11 through the first suction grooves 12, thereby adsorbing the packaging box onto the conveyor belt 11. Then, the packaging box moves between the two first side plates 14 along with the conveyor belt 11. Specifically, during the movement of the packaging box, the ion bar 31 is controlled to operate, and an electrostatic sensor detects whether there is static electricity on the surface of the packaging box. When static electricity exists on the packaging box, the ion bar 31 releases a large number of positive and negative ions to neutralize the static electricity based on the data fed back by the electrostatic sensor, thereby eliminating the static electricity on the surface of the packaging box. If the packaging boxes that are stacked together due to static electricity move onto the conveyor belt 11, the ion bar 31 will gradually eliminate the static electricity on the packaging boxes, thereby separating the packaging boxes that are attracted to each other by static electricity. At the same time, by eliminating the static electricity on the packaging boxes, the dust, paper scraps and other impurities that were originally attracted to the packaging boxes can lose their electrostatic adsorption capacity. Meanwhile, clean gas is introduced into the blowing chamber 32, and the clean gas is blown into the conveyor belt 11 through the through grooves 3 on both sides. In this process, impurities on the packaging paper can be blown off and then sucked into the first suction chamber 13. In this process, not only can the packaging boxes that are attracted to each other by static electricity be eliminated, but the adsorption capacity of impurities on the packaging boxes can also be eliminated. More specifically, the second motor is simultaneously controlled to drive the drive belt 2 to rotate, and the second suction chamber 23 is connected to the external vacuum cleaner. Since the distance between the drive belt 2 and the conveyor belt 11 is the same as the thickness of the packaging box, when the stacked packaging boxes move to the notch 15 position, the rounded corners on both sides of the drive belt 2 allow the packaging boxes to move more easily under the drive belt 2. When the stacked packaging boxes move to the position under the drive belt 2, the stacked box on top will contact the bottom surface of the drive belt 2, and thus be attracted to it. On the second suction groove 21 of the drive belt 2, the packaging boxes stacked on top of each other and located at the bottom are originally attracted by the first suction groove 12 on the conveyor belt 11, so that the packaging boxes located at the bottom are not attracted by the second suction groove 21 on the drive belt 2; then the rotating drive belt 2 will drive the packaging boxes stacked on top of each other to gradually move out from above the conveyor belt 11. When the packaging boxes attracted by the second suction groove 21 at the bottom of the drive belt 2 gradually detach from the second suction chamber 23, the packaging boxes will be separated on the workbench 1, thereby preventing the stacked packaging boxes from being sent into the inspection department for inspection; Furthermore, the conveyor belt 11 will then move the packaging box into the inspection chamber 16. The high-speed camera 17 in the inspection chamber 16 will take pictures of the passing packaging box. If there are defects or flaws on the packaging box, it will be discharged by the discharge section when the packaging box moves to the discharge section. Qualified packaging boxes will be collected. Furthermore, by first eliminating static electricity from the packaging boxes, the relatively stacked packaging boxes can no longer attract each other. Then, through the structural adaptation design of the discharge component and the conveyor section, and by using the design that matches the gap between the drive belt 2 and the conveyor belt 11 with the thickness of the packaging box, combined with the adsorption cooperation of the first suction groove 12 and the first air extraction chamber 13 of the conveyor belt 11 and the second suction groove 21 and the second air extraction chamber 23 of the drive belt 2, the stacked packaging boxes are accurately separated: the lower packaging box is stably attracted by the conveyor belt 11, and the upper packaging box is attracted by the drive belt 2 and moves out of the conveyor line with its rotation. This effectively removes the stacked packaging boxes from the inspection and conveying process, completely avoiding the problem that the lower packaging box cannot be photographed and inspected by the high-speed camera 17 because it is blocked after the stacked packaging boxes enter the inspection section. This eliminates the quality control risk of uninspected packaging boxes flowing into subsequent processes and ensures the full coverage of visual inspection. Simultaneously, clean gas is introduced above the conveyor belt 11 through the air blowing chamber 32. The airflow blows off impurities that have lost their adhesion to the surface of the packaging box. At the same time, combined with the suction effect of the first air extraction chamber 13 and the first suction groove 12 of the conveying section, the blown-off impurities are sucked in and collected in time. This achieves simultaneous static electricity elimination and impurity cleaning, effectively avoiding the problem of impurities adhering to the surface of the packaging box being misjudged as stains, dirt spots, or other printing defects by the high-speed camera 17. This improves the accuracy of visual inspection and reduces the generation of false waste products. At the same time, by adsorbing the packaging box onto the conveyor belt 11, it can prevent the packaging box from tilting, bouncing, or shifting during the transportation process. This ensures that the packaging box enters the inspection section in a standard posture, allowing the high-speed camera 17 to capture a complete and clear image of the packaging box. This provides a guarantee for the accurate comparison and defect identification of the image processing system and improves the overall accuracy of visual inspection.

[0023] As an embodiment of the present invention, the two first side plates 14 have grooves 33 on opposite sides of their surfaces, and the bottom plane of the grooves 33 is flush with the top plane of the conveyor belt 11. Below the through groove 3, a driven belt 34 is rotatably mounted inside the first side plate 14, and the bottom of the driven belt 34 is in contact with the bottom plane of the groove 33; the overall thickness of the driven belt 34 is greater than the sum of the thicknesses of the two packaging boxes; The driven belt 34 rotates within the first side plate 14 via a rotating shaft 61, and the rotating shaft 61 extends above the first side plate 14 and is driven by a third motor. The two first side plates 14 are provided with guide grooves 35 on opposite sides, and the middle of the guide grooves 35 protrudes upward; the driven belt 34 slides in the guide grooves 35; In this embodiment, the surface of the driven belt 34 is a smooth surface; The driven belt 34 has evenly arranged air passages 36 on its outer ring surface; the through groove 3 has evenly arranged vertical grooves 37 below it, and the vertical grooves 37 are all connected to the blowing chamber 32 and are staggered with the air passages 36.

[0024] During implementation, since the first side plate 14 has grooves 33 on both sides and a driven belt 34 is provided below the through groove 3, and the bottom of the driven belt 34 is in contact with the bottom plane of the groove 33, when the conveyor belt 11 moves, the driven belt 34 is simultaneously controlled to rotate by the third motor, and the rotation direction and speed of the driven belt 34 are the same as those of the conveyor belt 11. When the packaging box moves between the two conveyor belts 11, the two sides of the packaging box will contact the side of the driven belt 34 facing the packaging box; when moving with the conveyor belt 11, it will also move with the driven belts 34 on both sides; during the process of the packaging box moving with the conveyor belt 11 and the driven belt 34, the ion air bar 31 will gradually eliminate the static electricity on the packaging box; since the guide groove 35 protrudes upward in the middle and the driven belt 34 Sliding within the guide groove 35, when the driven belts 34 on both sides of the packaging box move to the protruding position of the guide groove 35, the driven belts 34 will move upward. Since the packaging box is adsorbed on the first suction groove 12, the driven belts 34 will not move upward when they pass the protrusion. If the stacked packaging boxes follow the driven belts 34 to the protruding position, since the bottom packaging box is adsorbed by the first suction groove 12, it will act on the upper packaging box during the upward movement of the driven belts 34, thus causing the upper packaging box to have an upward tendency. If the upper packaging box is moved upward by the driven belts 34, the stacked packaging boxes will separate from each other. If the upper packaging box is not moved upward by the driven belts 34, the static electricity on the packaging box will continue to be eliminated by the ion air bar 31. More specifically, the driven belt 34 has evenly arranged air passages 36; and since the vertical grooves 37 on the first side plate 14 are staggered with the air passages 36, the gas blown out from the vertical grooves 37 will also be blown out from the air passages 36 on the driven belt 34. When the upper packaging box and the lower packaging box tend to separate after passing through the raised driven belt 34, the gas will enter between the two packaging boxes through the gap between the two packaging boxes, thereby making the two packaging boxes separate better. Furthermore, through the upward-protruding structural design of the guide groove 35, combined with the sliding characteristics of the driven belt 34 along the guide groove 35, the driven belt 34 can synchronously complete the upward movement with the guide groove 35. Since the bottom packaging box is stably adsorbed and fixed by the first suction groove 12 of the conveyor belt 11, the lifting force of the driven belt 34 only acts on the stacked upper packaging box, making it form an upward separation trend. For stubborn stacked materials that have not separated due to intermolecular adsorption and other reasons after the ion air bar 31 neutralizes the static electricity, it achieves physical forced separation, forming a double separation guarantee with the static electricity neutralization of the ion air bar 31, thereby solving the problem of incomplete separation of stacked materials. When the driven belt 34 lifts and forms a small separation gap between the stacked packaging boxes, the clean gas of the blowing chamber 32 will be precisely blown into the gap between the two boxes through the vertical groove 37 and the air channel 36, forming an air cushion layer in the gap between the packaging boxes, thereby breaking the residual adsorption force between the stacked packaging boxes, greatly improving the success rate of stacked material separation, and ensuring that no stacked packaging boxes enter the subsequent inspection stage.

[0025] As one embodiment of the present invention; a sloping plate 4 is installed on the right side of the second side plate 22; The length of the inclined plate 4 is greater than the maximum distance between the two first side plates 14; the bottom of the inclined plate 4 is flat, and grooves 15 extend from both sides of the inclined plate 4; there is a distance between the bottom plane of the inclined plate 4 and the conveyor belt 11, which is slightly greater than the thickness of the packaging box; In this embodiment, two rectangular slots 41 are formed on the inclined plate 4, and the rectangular slots 41 are respectively located above the first side plate 14; Above each of the two rectangular slots 41, there is a rotating rod 42 that rotates via a swivel base, and the rotating rod 42 is driven by a fourth motor; the outer ring surface of the rotating rod 42 is equipped with evenly arranged paddle plates, and the paddle plates are in contact with the bottom plane of the slot 15. In this embodiment, the lever includes a fixed cavity 43 and a sliding plate 44; The fixed chamber 43 is fixed on the rotating rod 42; the fixed chamber 43 is provided with a sliding plate 44, and the sliding plate 44 slides in the fixed chamber 43 by means of a spring; the two sliding plates 44 are respectively located above the two first side plates 14, and partially extend between the two first side plates 14.

[0026] During implementation, after the packaging box passes under the drive belt 2, it will continue to move with the conveyor belt 11. The conveyor belt 11 will carry the single packaging box through the underside of the inclined plate 4. If the stacked packaging boxes are not removed after passing under the drive belt 2, the packaging box on top will be blocked by the inclined plate 4 and cannot pass under the inclined plate 4. Thus, only a single packaging box can pass through the inclined plate 4. Specifically, when the packaging box located above is obstructed, the fourth motor controls the rotating rod 42 and the lever to rotate within the rectangular slot 41. When the rotating rod 42 rotates, it drives the lever to rotate along the plane at the bottom of the notch 15. Since the lever is composed of the slide plate 44 and the fixed chamber 43, when the slide plate 44 moves along the bottom plane of the notch 15, it will first contact the bottom plane of the notch 15, and then gradually rotate through the rectangular slot 41 to the left side of the ramp 4. During this process, the slide plate 44 is always in contact with the bottom plane of the notch 15. At the same time, the slide plate 44 will slide within the fixed chamber 43 and compress the spring. Simultaneously, the moving slide plate 44 will push the packaging box obstructed by the ramp 4 to move to the left. The packaging box moving to the left will move along the packaging box below. When the packaging box moves to below the drive belt 2, it will be removed by the drive belt 2.

[0027] As an embodiment of the present invention, a cleaning component is provided between the groove 15 and the detection unit; The cleaning assembly includes a top plate 5; the top of the two first side plates 14 is provided with the top plate 5; the top plate 5 has a groove 51; and a ventilation chamber 52 is installed above the top plate 5. An ion air bar 31 is also installed below the top plate 5. Collection chambers 53 are installed on both sides of the top plate 5, opposite to the first side plate 14; the first side plate 14 has evenly arranged circular grooves 54; the circular grooves 54 are connected to the collection chambers 53. The top plate 5 is provided with upright plates 6 on both sides, and the upright plates 6 are located on both sides of the top plate 5; a rotating shaft 61 is rotatably provided below the upright plate 6, and an annular layer 62 is provided on the outer ring surface of the rotating shaft 61, and the annular layer 62 is filled with gas; the right side of the detection chamber 16 is also provided with upright plates 6, rotating shaft 61 and annular layer 62. In this embodiment, a rotating cylinder 7 is rotatably positioned between adjacent circular grooves 54, and part of the rotating cylinder 7 extends into the collection chamber 53. The rotating drum 7 is divided by the middle, and there are mirror-shaped cleaning strips 71 on both sides of the dividing line. The cleaning strips 71 are spiral-shaped. One side of the rotating drum 7 that extends into the collection chamber 53 is driven by a fifth motor. The rotating drum 7 has suction holes 72.

[0028] During implementation, after the packaging box passes the inclined plate 4, it will pass under the annular layer 62 on the left side of the top plate 5. Since the annular layer 62 is filled with gas, when the packaging box passes by, the annular layer 62 will be dented. Since the top plate 5 is equipped with upright plates 6 and annular layers 62 on both sides and the right side of the detection chamber 16, external dust can be isolated to prevent dust from entering the detection chamber 16. Specifically, after the packaging box passes through the annular layer 62, it enters the area below the top plate 5, where clean gas is introduced into the ventilation chamber 52. The gas flows through the trough 51 into the area above the conveyor belt 11, and at the same time, it passes through the ion bar 31 to eliminate static electricity on the packaging box, preventing dust and other impurities from adhering to the packaging box. When the gas acts on the packaging box, it blows off the dust on the packaging box, and then enters the collection chamber 53 through the circular groove 54. At the same time, the collection chamber 53 is connected to the external vacuum cleaner, so the gas is drawn into the collection chamber 53 through the circular groove 54, and the dust is also drawn into the collection chamber 53, thereby removing the dust on the packaging box. Afterward, the packaging box will move to the detection chamber 16 for detection. More specifically, since the rotating drum 7 is equipped with a mirrored cleaning strip 71, and the cleaning strip 71 is spiral-shaped, when the packaging box passes by, the fifth motor drives the rotating drum 7 and the cleaning strip 71 to rotate. When the packaging box passes under the cleaning strip 71, the rotating cleaning strip 71 will move along the packaging box towards the first side plate 14, and at the same time, it will drive the dust to the first side plates 14 on both sides. Then the dust is drawn into the collection chamber 53. At the same time, since the rotating drum 7 is equipped with a suction hole 72, if the cleaning strip 71 pushes the dust to move during the rotation, the dust will be sucked into the rotating drum 7, and then flow out from the other side of the rotating drum 7 and enter the collection chamber 53. In this process, the dust can be prevented from following the cleaning strip 71 to the end position before it can be removed from the packaging box. The dust can be directly extracted through the suction hole 72, reducing the contact time with the packaging box. Furthermore, the spiral cleaning strips 71 mirrored on the rotating drum 7 rotate under the drive of the fifth motor, pushing impurities on the surface of the packaging box along the spiral trajectory towards the first side plates 14 on both sides, preventing impurities from accumulating on the surface of the packaging box. At the same time, the suction holes 72 on the rotating drum 7 can perform real-time negative pressure suction during rotation, directly sucking the impurities pushed by the cleaning strips 71 into the rotating drum 7 and guiding them into the collection chamber 53. This effectively prevents impurities from following the cleaning strips 71 to the end before detaching from the packaging box, reducing the contact time between impurities and the surface of the packaging box. Moreover, the contact between the cleaning strips 71 and the packaging box is a flexible fit, and the rotating drum 7 rotates smoothly without causing hard friction or damage to the surface of the packaging box. This ensures the thoroughness of impurity cleaning and maximizes the protection of the surface process integrity of the packaging box, reducing the accidental scrap rate of qualified packaging boxes.

[0029] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A packaging box printing and sorting device based on vision recognition, comprising an inspection machine; the inspection machine comprising a feeding section, a conveying section, an inspection section, and a waste removal section; Its features are, The conveying unit includes a conveyor belt (11); the conveyor belt (11) has first side plates (14) on both sides, and the conveyor belt (11) rotates between the two first side plates (14) through a rotating shaft (61) and is driven by a first motor; The surface of the conveyor belt (11) is provided with uniformly arranged first suction grooves (12); the inner ring of the conveyor belt (11) is provided with uniformly arranged first air extraction chambers (13); The opening of the first extraction chamber (13) faces upward; the first side plate (14) is equipped with evenly arranged extraction pipes; A separation component is provided on the left side of the conveyor belt (11); Both of the first side plates (14) are provided with notches (15); a packaging box is conveyed on the conveyor belt (11), and the top plane of the packaging box is flush with the bottom plane of the notch (15); An exclusion component is provided above the notch (15); the exclusion component includes a drive belt (2), and the drive belt (2) is located above the conveyor belt (11); the surface of the drive belt (2) is provided with uniformly arranged second suction grooves (21); there is a distance between the drive belt (2) and the conveyor belt (11), and the distance is the same as the thickness of the packaging box; The drive belt (2) is provided with second side plates (22) on both sides, and the drive belt (2) rotates inside the second side plates (22) by a rotating roller; the drive belt (2) is provided with a second air extraction chamber (23) inside, and the second air extraction chamber (23) is located above the conveyor belt (11), and the opening of the second air extraction chamber (23) faces downward; a detection part is provided on the right side of the notch (15); The detection unit includes a detection chamber (16), and the detection chamber (16) is installed on the right side of the notch (15); A high-speed camera (17) is installed inside the detection chamber (16); light sources are provided on both sides of the high-speed camera (17); The separation component includes a through groove (3); the left side of the notch (15) is provided with a through groove (3) on the first side plate (14); an ion wind bar (31) is provided in the through groove (3), and the left and right sides of the ion wind bar (31) are installed in the through groove (3), and there is a gap between the upper and lower sides of the ion wind bar (31) and the through groove (3). The ion bar (31) is connected to an electrostatic sensor, which is used to detect the static electricity on the surface of the packaging box. A blower chamber (32) is provided on the opposite side of the first side plate (14), and a through groove (3) is located inside the blower chamber (32); an air pipe is installed on the blower chamber (32); The two first side plates (14) have grooves (33) on opposite sides of their surfaces, and the bottom plane of the grooves (33) is flush with the top plane of the conveyor belt (11); Below the through groove (3), there is a driven belt (34) rotating inside the first side plate (14), and the bottom of the driven belt (34) is in contact with the bottom plane of the groove (33); the overall thickness of the driven belt (34) is greater than the sum of the thicknesses of the two packaging boxes; The driven belt (34) rotates within the first side plate (14) via a rotating shaft (61), and the rotating shaft (61) extends above the first side plate (14) and is driven by a third motor; The two first side plates (14) have guide grooves (35) on opposite sides, and the middle of the guide grooves (35) protrudes upward; the driven belt (34) slides in the guide grooves (35); The surface of the driven belt (34) is a smooth surface; The outer ring surface of the driven belt (34) is provided with uniformly arranged air passages (36); the lower part of the through groove (3) is provided with uniformly arranged vertical grooves (37), and the vertical grooves (37) are all connected to the blowing chamber (32) and are staggered with the air passages (36).

2. The packaging box printing and sorting equipment based on visual recognition according to claim 1, characterized in that: An inclined plate (4) is installed on the right side of the second side plate (22); The length of the inclined plate (4) is greater than the maximum distance between the two first side plates (14); the bottom of the inclined plate (4) is flat, and the two sides of the inclined plate (4) extend into notches (15); there is a distance between the bottom plane of the inclined plate (4) and the conveyor belt (11), which is greater than the thickness of the packaging box.

3. The packaging box printing and sorting equipment based on visual recognition according to claim 2, characterized in that: Two rectangular slots (41) are provided on the inclined plate (4), and the rectangular slots (41) are respectively located above the first side plate (14); Above each of the two rectangular slots (41), there is a rotating rod (42) that rotates via a rotating base, and the rotating rod (42) is driven by a fourth motor; the outer ring surface of the rotating rod (42) is equipped with evenly arranged dial plates, and the dial plates are in contact with the bottom plane of the slot (15).

4. The packaging box printing and sorting equipment based on visual recognition according to claim 3, characterized in that: The lever includes a fixed chamber (43) and a sliding plate (44); The fixed chamber (43) is fixed on the rotating rod (42); the fixed chamber (43) is provided with a sliding plate (44), and the sliding plate (44) slides in the fixed chamber (43) by means of a spring; the two sliding plates (44) are respectively located above the two first side plates (14), and partially extend between the two first side plates (14).

5. The packaging box printing and sorting equipment based on vision recognition according to claim 4, characterized in that: A cleaning component is provided between the defect (15) and the detection unit; The cleaning assembly includes a top plate (5); the top of the two first side plates (14) is provided with the top plate (5); a groove (51) is opened on the top plate (5); a ventilation chamber (52) is installed above the top plate (5); An ion fan bar (31) is also installed below the top plate (5); Collection chambers (53) are installed on the opposite side of the first side plate (14) below the top plate (5); the first side plate (14) has evenly arranged circular grooves (54); the circular grooves (54) are connected to the collection chambers (53); The top plate (5) is provided with upright plates (6) on both sides, and the upright plates (6) are located on both sides of the top plate (5); a rotating shaft (61) is rotatably provided below the upright plate (6), and an annular layer (62) is provided on the outer ring surface of the rotating shaft (61), and the annular layer (62) is filled with gas; the right side of the detection chamber (16) is also provided with an upright plate (6), a rotating shaft (61) and an annular layer (62).

6. The packaging box printing and sorting equipment based on vision recognition according to claim 5, characterized in that: A rotating cylinder (7) is mounted between each of the adjacent circular grooves (54), and part of the rotating cylinder (7) extends into the collection bin (53); The rotating drum (7) is divided by the middle, and there are mirror-image cleaning strips (71) on both sides of the dividing line. The cleaning strips (71) are spiral-shaped. One side of the rotating drum (7) extends into the collection chamber (53) and is driven by a fifth motor. The rotating drum (7) is provided with suction holes (72).

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