A sorting device for carton processing damage detection

Abstract

The application relates to the field of carton quality inspection, in particular to a carton processing damage detection sorting device, which comprises a support and a roller conveyor, the roller conveyor is installed at the top of the support, the roller conveyor is used for conveying the carton from left to right, detection mechanisms and positioning mechanisms are respectively installed on the upper and lower surfaces of the roller conveyor, the positioning mechanisms lift the height of the carton, the detection mechanisms are used for laser scanning of the carton, whether the carton is damaged is detected, a controller is installed at the top of the front surface of the detection mechanism and is used for analyzing the images fed back by the detection mechanisms, support platforms are installed at the right ends of the front and back sides of the roller conveyor. The detection station positioning and bottom corner integrity detection functions are integrated, the support and protection performance of the carton in the subsequent process is avoided from being weakened due to the undetected damage of the bottom corner, the diversification functions of carton surface damage detection and coated carton protective film detection are realized, the comprehensiveness and precision of the carton quality detection are remarkably improved, and the carton factory quality is strictly controlled.

Description

Technical Field

[0001] This invention relates to the field of cardboard box quality inspection technology, specifically a sorting device for detecting damage during cardboard box processing. Background Technology

[0002] As the most widely used packaging product, cardboard boxes play a crucial role in logistics, industrial production, and retail, protecting the contents and facilitating handling and storage. They are an indispensable basic packaging carrier in the modern supply chain system. Depending on the materials used, cardboard boxes can be divided into various types, such as corrugated cardboard boxes, single-layer cardboard boxes, and coated cardboard boxes. Furthermore, various specifications and models can be designed according to the size, weight, and protection requirements of the packaged goods. The quality of cardboard boxes directly determines the transportation safety and storage stability of the contents in the downstream packaging process.

[0003] In the large-scale processing and production of cardboard boxes, quality inspection is a crucial step in ensuring product quality. If cardboard boxes with defects such as tearing, cracking, or deformation reach downstream applications, they are highly susceptible to breakage during handling, stacking, or transportation due to insufficient structural strength. This can lead to damage to the internally packaged products, causing economic losses to both businesses and consumers. Currently, the industry primarily uses traditional visual inspection technology to detect cardboard box damage. This technology uses a CCD camera to capture real-time images of the cardboard box surface and then relies on image recognition algorithms to analyze features such as pixel changes, outline integrity, and color uniformity to determine whether the cardboard box has visible damage.

[0004] However, existing visual inspection technologies still have several technical shortcomings in practical industrial applications, making it difficult to achieve comprehensive and accurate quality control. Three prominent problems exist:

[0005] During the inspection and conveying process, the bottom surface of the carton is in close contact with the surface of the conveyor belt. As a result, the key parts of the bottom corner of the carton that are very easy to be squeezed and damaged during processing and handling are completely blocked by the conveyor belt. The CCD camera cannot capture the bottom corner image, forming a blind spot for detection. The damage to the bottom corner will directly destroy the overall support structure of the carton and greatly weaken its protective performance.

[0006] Traditional visual inspection devices often use CCD cameras installed at a fixed angle, resulting in a single shooting perspective. For hidden defects such as small dents, minor cracks, and slight deformation of edges and corners on the surface of cardboard boxes, the image clarity and feature recognition are insufficient, which can easily lead to missed detections and cause some cardboard boxes with potential quality problems to enter the market.

[0007] For products with special protective requirements, such as laminated cartons, existing technologies can only detect damage to the cardboard substrate itself and cannot determine whether there are scratches, peeling, bubbles, or other damage to the surface coating. The integrity of the coating directly affects the carton's waterproof, stain-proof, and abrasion-resistant properties. This lack of functionality results in incomplete testing of the protective effect of laminated cartons. Summary of the Invention

[0008] The purpose of this invention is to provide a sorting device for detecting damage during carton processing, thereby solving the problems mentioned in the background art, such as the inability to detect the bottom corners of the carton and the inability to detect the integrity of the protective film while detecting damage to the surface of the carton.

[0009] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0010] A sorting device for detecting damage in cardboard box processing includes a support frame and a roller conveyor. The roller conveyor is installed on top of the support frame and transports cardboard boxes from left to right. A detection mechanism and a positioning mechanism are respectively installed on the middle of the upper and lower surfaces of the roller conveyor. The positioning mechanism raises the height of the cardboard box, allowing the inspection mechanism to perform laser scanning on the cardboard box to detect whether the cardboard box is damaged. A controller is installed on the top front of the detection mechanism to analyze the images fed back by the detection mechanism. Support platforms are installed on the right ends of both the front and rear sides of the roller conveyor, and the two support platforms respectively hold intact and damaged cardboard boxes. A base is installed on the right end of the roller conveyor, and a robotic arm is installed on the upper surface of the base. A gripper is installed on the moving end of the robotic arm. The robotic arm drives the gripper to move, and the gripper grabs the cardboard box for sorting.

[0011] The purpose is to perform laser scanning on the surface of cardboard boxes, which can not only detect whether the surface of the cardboard box is damaged, but also detect the protective film of coated cardboard boxes. The detection mechanism includes a housing, with a controller installed on the front side of the housing. Support legs are installed at the four corners of the lower surface of the housing, and the support legs are installed with roller conveyors. A driver is installed at the center of the upper surface of the housing, and scanning components are installed on all four sides inside the housing.

[0012] As a further embodiment of the present invention, the scanning component includes a bushing installed at the bottom of the housing, a rotatable shaft installed in the middle of the bushing, a drive gear and a swing arm respectively installed at the upper and lower ends of the swing arm, the drive gear can drive the swing arm to rotate under the drive of the driver, a mounting bracket is installed at the bottom of the outer wall of the bushing, and a video recorder electrically connected to the controller is installed at the top of the left side wall of the mounting bracket, the controller analyzes the image signal fed back by the video recorder, and a lifting rod is inserted into the end of the swing arm away from the swing arm.

[0013] As a further aspect of the present invention, the recording angle of the video recorder is tilted downwards.

[0014] As a further embodiment of the present invention, the scanning assembly further includes a rotating rod mounted on the bottom inner side of the mounting frame via a bearing. A first support rod is installed at both the front and rear ends of the outer wall of the rotating rod, and a reinforcing rib is installed at the other end of the first support rod. A sliding sleeve is sleeved on the outer wall of the reinforcing rib, and the sliding sleeve is installed with the lifting rod. The lifting rod is driven to make a circular motion by a swing rod, which pulls the reinforcing rib to swing. An infrared laser is installed in the middle of the outer wall of the rotating rod. The infrared laser emits infrared laser light outward. The laser light hits the surface of the carton, and the quality of the carton is judged based on the laser light state.

[0015] As a further aspect of the present invention, the objective is to lift the carton to the inspection station and simultaneously monitor the condition of the bottom corners of the carton to prevent a decline in the carton's protective performance for the product. The positioning mechanism includes a mounting plate installed in the middle of the lower surface of the roller conveyor. An alarm light is installed on the front of the mounting plate, and a cylinder is installed at the center of the lower surface of the mounting plate. A positioning component is installed at the output end of the cylinder. The positioning component is driven by the cylinder to lift and lower, thereby lifting the carton from the roller conveyor and bringing it to the inspection point of the inspection mechanism.

[0016] As a further embodiment of the present invention, the positioning component includes a lifting frame installed at the output end of the cylinder, with uprights installed at each of the four corners of the lifting frame, and triangular seats installed at the top of the uprights to support the four corners of the carton. A trigger rod is inserted into the middle of the triangular seats, and a reset unit is installed at the center of the upper surface of the lifting frame.

[0017] As a further embodiment of the present invention, the reset unit includes a disc installed at the center of the upper surface of the lifting frame. A column is installed at the center of the upper surface of the disc. Metal strips are installed at equal intervals along the circumference of the outer wall of the column, and the metal strips are connected to a power source and electrically connected to an alarm light. Several second support rods are installed at equal intervals along the circumference of the outer edge of the upper surface of the disc. A ring seat is installed at the top of the second support rod. A counterweight is sleeved at equal intervals along the circumference of the outer wall of the ring seat. One end of a connecting rod is installed on the outside of the counterweight through a pin, and the other end of the connecting rod is connected to the bottom of the trigger rod through a pin. Under the action of the weight of the counterweight, the connecting rod is pushed upward, causing the connecting rod to pull the trigger rod upward, thereby resetting the trigger rod.

[0018] As a further embodiment of the present invention, the counterweight is positioned between two adjacent metal strips.

[0019] Compared with the prior art, the beneficial effects of the embodiments of the present invention are:

[0020] 1. This invention uses a cylinder-driven lifting frame to rise, which, in conjunction with the triangular supports at the four corners, stably lifts the carton away from the roller conveyor. This efficiently and accurately transfers the carton to the inspection station, solving the problem of inconvenient station positioning caused by the carton's close contact with the conveyor in traditional inspection. Simultaneously, during the carton's ascent, its bottom corner naturally presses down on the trigger rod on the triangular support. The linkage between the trigger rod and the connecting rod drives the counterweight to rotate inward. When the counterweight rotates to form a closed loop with the metal strip, an alarm light illuminates to visually indicate that the bottom corner is undamaged. If the bottom corner is damaged, the trigger rod cannot be effectively driven, the counterweight cannot form a loop with the metal strip, and the alarm light remains off to indicate the defect. Integrating inspection station positioning and bottom corner integrity detection effectively fills the blind spot in traditional visual inspection where the bottom corner of the carton is obscured by the conveyor, ensuring the overall structural integrity of the carton and preventing weakening of the carton's subsequent support and protective performance due to undetected bottom corner damage.

[0021] 2. This invention utilizes the coordinated action of the driver and drive gear of the detection mechanism to rotate the rotating shaft and swing arm, causing the lifting rod to perform circular motion. During the movement of the lifting rod, the sliding sleeve slides on the reinforcing rib and pulls the first support rod to swing, thereby driving the rotating rod and infrared laser to perform fan-shaped swing, achieving laser irradiation of the carton surface without blind spots. This solves the problems of single camera shooting angle and easy omission of minor defects in traditional visual inspection. At the same time, the video recorder captures the laser irradiation image in real time and feeds it back to the controller. The controller can simultaneously achieve dual detection by analyzing the laser state: if the laser is bent, it indicates that there is a dent on the carton surface; if the laser is broken, it indicates that the protective film of the coated carton is damaged. This realizes diversified functions of carton surface damage detection and coated carton protective film detection, significantly improving the comprehensiveness and accuracy of carton quality inspection, strictly controlling the quality of cartons leaving the factory, ensuring the transportation safety of subsequent packaged products from the source, and reducing the risk of product damage caused by carton quality problems. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a perspective view of the testing mechanism of the present invention;

[0024] Figure 3 This is a perspective view of the scanning component of the present invention;

[0025] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 This is a perspective view of the positioning mechanism of the present invention;

[0027] Figure 6 This is a perspective view of the positioning component of the present invention;

[0028] Figure 7 For the present invention Figure 6 Enlarged view of section B in the middle.

[0029] In the diagram: 1. Bracket; 2. Roller conveyor; 3. Detection mechanism; 4. Positioning mechanism; 5. Controller; 6. Support platform; 7. Base; 8. Robotic arm; 9. Fixture; 31. Housing; 32. Support leg; 33. Driver; 34. Scanning assembly; 341. Bushing; 342. Rotating shaft; 343. Drive gear; 344. Mounting bracket; 345. Video recorder; 346. Swing arm; 347. Lifting arm; 348. Rotating arm; 349. First support rod; 3410. Reinforcing rib; 3411. Sliding sleeve; 3412. Infrared laser; 41. Mounting plate; 42. Alarm light; 43. Cylinder; 44. Positioning assembly; 441. Lifting frame; 442. Upright pole; 443. Triangular seat; 444. Trigger rod; 445. Reset unit; 4451. Disc; 4452. Column; 4453. Metal strip; 4454. Second support rod; 4455. Ring seat; 4456. Counterweight; 4457. Connecting rod. Detailed Implementation

[0030] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0031] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] Please see Figures 1-7 In this embodiment of the invention, a sorting device for detecting damage in cardboard box processing includes a support 1 and a roller conveyor 2. The roller conveyor 2 is installed on the top of the support 1 and is used to transport cardboard boxes from left to right. A detection mechanism 3 and a positioning mechanism 4 are respectively installed on the middle part of the upper and lower surfaces of the roller conveyor 2. The positioning mechanism 4 raises the height of the cardboard box so that the inspection mechanism 3 can perform laser scanning on the cardboard box to detect whether the cardboard box is damaged. A controller 5 is installed on the top front of the detection mechanism 3 to analyze the images fed back by the detection mechanism 3. Support platforms 6 are installed on the right ends of both the front and rear sides of the roller conveyor 2. The two support platforms 6 respectively store intact and damaged cardboard boxes. A base 7 is installed on the right end of the roller conveyor 2. A robotic arm 8 is installed on the upper surface of the base 7. A clamp 9 is installed on the moving end of the robotic arm 8. The robotic arm 8 drives the clamp 9 to move, and the clamp 9 grabs the cardboard box for sorting.

[0033] Furthermore, the detection mechanism 3 includes a housing 31, with the controller 5 mounted on the front side of the housing 31. Support legs 32 are mounted at the four corners of the lower surface of the housing 31, and the support legs 32 are mounted on the roller conveyor 2. A driver 33 is mounted at the center of the upper surface of the housing 31. Scanning components 34 are mounted on all four sides inside the housing 31. The driver 33 consists of a motor and a gear assembly. The motor drives the gear to rotate, providing driving force for the scanning components 34.

[0034] Furthermore, the scanning component 34 includes a bushing 341 mounted on the bottom of the housing 31. A rotatable shaft 342 is mounted in the middle of the bushing 341. A drive gear 343 and a swing arm 346 are mounted on the upper and lower ends of the shaft 342, respectively. Under the drive of the driver 33, the drive gear 343 can drive the shaft 342 to rotate. A mounting bracket 344 is mounted on the bottom of the outer wall of the bushing 341. The mounting bracket 344 is U-shaped. A video recorder 345 electrically connected to the controller 5 is mounted on the top of the left side wall of the mounting bracket 344. The controller 5 analyzes the image signal fed back by the video recorder 345. The video recorder 345 is tilted downwards. The video recorder 345 emits in a different direction than the infrared laser 3412, which makes the laser image extracted by the video recorder 345 more intuitive. A lifting rod 347 is inserted into the end of the swing arm 346 away from the shaft 342. The lifting rod 347 rises and falls, adapting to the height change of the reinforcing rib 3410 when it swings.

[0035] Furthermore, the scanning assembly 34 also includes a rotating rod 348 mounted on the bottom inner side of the mounting bracket 344 via bearings. One end of a first support rod 349 is mounted on both the front and rear ends of the outer wall of the rotating rod 348, and a reinforcing rib 3410 is mounted on the other end of the first support rod 349. A sliding sleeve 3411 is sleeved on the outer wall of the reinforcing rib 3410, and the sliding sleeve 3411 is installed with the lifting rod 347. The lifting rod 347 is driven to make a circular motion by the swing rod 346, which pulls the reinforcing rib 3410 to swing. An infrared laser 3412 is installed in the middle of the outer wall of the rotating rod 348. The infrared laser 3412 emits infrared laser light outward. The laser light hits the surface of the cardboard box, and the quality of the cardboard box is judged according to the laser light state. The rotating rod 348 is set horizontally to ensure that the infrared laser light hits the surface of the cardboard box in a horizontal straight line, which is conducive to the capture of the video recorder 345.

[0036] The controller 5 sends a start signal to the driver 33. The motor inside the driver 33 drives the output gear to rotate. The output gear drives the drive gear 343 to rotate through meshing transmission. The drive gear 343 synchronously drives the rotating shaft 342 to rotate around the axis of the bushing 341, thereby causing the rocker arm 346 at the bottom of the rotating shaft 342 to make circular motion with the rotating shaft 342 as the center.

[0037] When the swing arm 346 makes a circular motion, the end of it away from the pivot 342 drives the lifting arm 347 to move synchronously. Since the bottom end of the lifting arm 347 is connected to the reinforcing rib 3410 through the sliding sleeve 3411, and the reinforcing rib 3410 is fixed to the pivot 348 through the first support rod 349, the lifting arm 347 will slide up and down along its own axis to adapt to the height change of the reinforcing rib 3410 during the circular motion with the swing arm 346. At the same time, the sliding sleeve 3411 applies a traction force to the reinforcing rib 3410, causing the reinforcing rib 3410 to drive the first support rod 349 to swing around the axis of the pivot 348.

[0038] When the first support rod 349 swings, it synchronously drives the rotating rod 348 to reciprocate around its own axis. The infrared laser 3412 in the middle of the rotating rod 348 moves synchronously with the rotating rod 348, forming a fan-shaped scanning trajectory centered on the axis of the rotating rod 348. The infrared laser emitted by the infrared laser 3412 continuously irradiates the surface of the carton, forming a continuous laser light band.

[0039] During the scanning process of the infrared laser 3412, the video recorder 345 continuously captures the laser-irradiated area on the surface of the carton and transmits the image signal containing the laser pattern to the controller 5 in real time. The controller 5 performs grayscale processing, edge detection and other algorithm analysis on the image signal. If the laser band in the image is a continuous straight line, it is determined that the surface of the carton is undamaged and the protective film is intact. If the laser band is bent or deformed, it is determined that there are dents or protrusions on the surface of the carton. If the laser band is broken or missing, it is determined that the protective film of the coated carton has scratches, peeling or bubbles and other damage. The controller 5 generates a carton quality judgment signal based on the analysis results to provide a basis for subsequent sorting.

[0040] Throughout the inspection process, the scanning component 34 achieves fan-shaped scanning of the infrared laser 3412 through mechanical linkage, and with the precise image acquisition of the video recorder 345, it effectively solves the problem of missing minor defects in traditional fixed-angle inspection. At the same time, it realizes the simultaneous detection of damage to the carton surface and the protective film, significantly improving the comprehensiveness and accuracy of the inspection.

[0041] Furthermore, the positioning mechanism 4 includes a mounting plate 41 installed in the middle of the lower surface of the roller conveyor 2. An alarm light 42 is installed on the front of the mounting plate 41. A cylinder 43 is installed at the center of the lower surface of the mounting plate 41. A positioning component 44 is installed at the output end of the cylinder 43. The positioning component 44 is driven to rise and fall by the cylinder 43, lifting the carton from the roller conveyor 2 and making it reach the detection point of the detection mechanism 3.

[0042] Furthermore, the positioning component 44 includes a lifting frame 441 installed at the output end of the cylinder 43. Each of the four corners of the lifting frame 441 is equipped with a vertical pole 442. A triangular seat 443 is installed on the top of the vertical pole 442. The triangular seat 443 can pass through the gap of the roller conveyor 2 and support the four corners of the carton through the triangular seat 443. A trigger rod 444 is inserted into the middle of the triangular seat 443. The trigger rod 444 is triggered by the bottom corner of the carton. A reset unit 445 is installed at the center of the upper surface of the lifting frame 441.

[0043] Furthermore, the reset unit 445 includes a disc 4451 mounted at the center of the upper surface of the lifting frame 441. A column 4452 is mounted at the center of the upper surface of the disc 4451. Metal strips 4453 are equidistantly mounted on the outer wall of the column 4452 along the circumference. The metal strips 4453 are externally connected to a power source and are also electrically connected to the alarm light 42. Several second support rods 4454 are equidistantly mounted on the outer edge of the upper surface of the disc 4451 along the circumference. A ring seat 4455 is mounted at the top of the second support rod 4454. A counterweight 4456 is equidistantly sleeved on the outer wall of the ring seat 4455 along the circumference. The ring seat 4455 is supported by the second support rods 4454. The counterweight 4456 has a supporting function, which expands the space around the counterweight 4456 and prevents the counterweight 4456 from being restricted. One end of the connecting rod 4457 is installed on the outside of the counterweight 4456 through a pin, and the other end of the connecting rod 4457 is connected to the bottom of the trigger rod 444 through a pin. Under the action of the weight of the counterweight 4456, the connecting rod 4457 is pushed upward, causing the connecting rod 4457 to pull the trigger rod 444 upward, thereby realizing the reset of the trigger rod 444. The counterweight 4456 is positioned between two adjacent metal strips 4453. When the counterweight 4456 rotates, the counterweight 4456 can be inserted into the gap of the metal strips 4453, so that the metal strips 4453 can supply power to the alarm light 42.

[0044] When the cylinder 43 of the positioning mechanism 4 drives the lifting frame 441 to rise, and the four corner triangular seats 443 contact the lower surface of the carton and lift the carton up: if the bottom corners of the carton are intact, the bottom corners will apply downward pressure to the trigger rod 444 on the triangular seat 443, causing the trigger rod 444 to slide downward along the guide hole of the triangular seat 443; when the trigger rod 444 slides down, it applies a pulling force to the counterweight 4456 through the connecting rod 4457, causing the counterweight 4456 to rotate around the ring seat 4455. The outer wall rotates upwards; as the counterweight 4456 rotates, the side of it closest to the column 4452 gradually comes into contact with the two adjacent sets of metal strips 4453. Since the counterweight 4456 is made of conductive material, the two sets of metal strips 4453 can be connected at this time, so that the circuit of "power supply, metal strips 4453, counterweight 4456, metal strips 4453, alarm light 42 and power negative terminal" is closed. The alarm light 42 is powered on and illuminates, sending a signal to the controller 5 that the bottom corner of the carton is intact.

[0045] When the carton inspection is completed, cylinder 43 drives the lifting frame 441 to descend. After the triangular seat 443 separates from the bottom of the carton, the downward pressure on the trigger rod 444 disappears. At this time, the counterweight 4456 rotates downward around the outer wall of the ring seat 4455 under its own weight to reset. When the counterweight 4456 rotates downward, it applies an upward thrust to the trigger rod 444 through the connecting rod 4457, causing the trigger rod 444 to slide upward along the guide hole of the triangular seat 443 and return to the initial height, preparing for the next carton inspection. At the same time, the counterweight 4456 separates from the metal strip 4453, the circuit is disconnected, the alarm light 42 goes out, and it waits for the next inspection to be triggered.

[0046] If the bottom corner of the carton is damaged (such as missing corner or crack), the damaged bottom corner cannot apply effective pressure to the corresponding trigger rod 444. The trigger rod 444 remains stationary, the corresponding counterweight 4456 does not rotate, and cannot contact the metal strip 4453 to conduct the circuit. The corresponding alarm light 42 remains off. The controller 5 determines "bottom corner of carton is damaged" based on the off state of the alarm light 42 and generates the corresponding sorting signal.

[0047] The reset unit 445 not only realizes the automatic mechanical reset of the trigger rod 444 without the need for an additional power source, but also combines mechanical action with circuit triggering to accurately determine the damage of the bottom corner of the carton. This effectively fills the blind spot of traditional detection devices in detecting the bottom corner of the carton and ensures the detection accuracy of the overall structural integrity of the carton.

[0048] Working principle:

[0049] Step 1: Roller conveyor 2 transports the carton from left to right, so that the carton reaches the inspection station and sorting station. At the inspection station, cylinder 43 drives the lifting frame 441 to rise, and the triangular seat 443 lifts the corner of the carton, so that the carton gradually rises and reaches the inspection position.

[0050] Under the weight of the carton itself, the bottom corner of the carton presses down on the trigger rod 444, causing the connecting rod 4457 to drive the counterweight 4456 to rotate inward. The counterweight 4456 is inserted between the metal strips 4453, and the counterweight 4456 and the metal strips 4453 form a closed circuit. The alarm light 42 is powered on and illuminates, indicating that the bottom corner of the carton is intact. If the alarm light 42 does not illuminate, it means that the bottom corner of the carton is damaged and the trigger rod 444 is not triggered. The alarm light 42 illuminating indicates that the bottom corner of the carton is damaged, thus realizing the bottom corner detection of the carton.

[0051] Step 2: After the carton arrives at the inspection station, the driver 33 drives the drive gear 343 to rotate the shaft 342, causing the swing arm 346 to drive the lifting arm 347 to make a circular motion. As the lifting arm 347 slides up and down, the sliding sleeve 3411 slides back and forth on the reinforcing rib 3410, driving the first support rod 349 to swing back and forth, thereby causing the rotating rod 348 to drive the infrared laser 3412 to swing in a fan shape. The infrared laser 3412 irradiates the surface of the carton, and the video recorder 345 feeds back the video signal to the controller 5 as an electrical signal. If the laser is in a straight line, it means that the surface of the carton is undamaged. If the laser is bent, it means that the carton has a dent. If the laser has a broken line, it means that the protective film on the surface of the carton is damaged, thus achieving the surface inspection of the laminated carton.

[0052] Step 3: The robotic arm 8 drives the gripper 9 to move between the roller conveyor 2 and the support platform 6, placing the cartons on the two support platforms 6 according to their different weights for sorting.

[0053] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these should also be considered within the scope of protection of the present invention. These will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A sorting device for detecting damage during carton processing, comprising a support (1) and a roller conveyor (2), wherein the roller conveyor (2) is mounted on top of the support (1) and the carton is conveyed from left to right using the roller conveyor (2), characterized in that, The roller conveyor (2) has a detection mechanism (3) and a positioning mechanism (4) installed on the middle of its upper and lower surfaces, respectively. The positioning mechanism (4) raises the height of the carton so that the detection mechanism (3) can perform laser scanning on the carton to detect whether the carton is damaged. The detection mechanism (3) has a controller (5) installed on the top front to analyze the images fed back by the detection mechanism (3). The roller conveyor (2) has a support platform (6) installed on the right side of both the front and rear sides. The two support platforms (6) store intact and damaged cartons respectively. The roller conveyor (2) has a base (7) installed on the right side. The base (7) has a robotic arm (8) installed on its upper surface. The robotic arm (8) has a clamp (9) installed on its moving end. The robotic arm (8) drives the clamp (9) to move. The clamp (9) grabs the carton and sorts the carton. The positioning mechanism (4) includes a mounting plate (41) installed in the middle of the lower surface of the roller conveyor (2). An alarm light (42) is installed on the front of the mounting plate (41). A cylinder (43) is installed at the center of the lower surface of the mounting plate (41). A positioning component (44) is installed at the output end of the cylinder (43). The positioning component (44) is driven to rise and fall by the cylinder (43) to lift the carton from the roller conveyor (2) and make it reach the detection point of the detection mechanism (3). The positioning component (44) includes a lifting frame (441) installed at the output end of the cylinder (43). Each of the four corners of the lifting frame (441) is equipped with a vertical pole (442). A triangular seat (443) is installed on the top of the vertical pole (442). The four corners of the carton are supported by the triangular seat (443). A trigger rod (444) is inserted into the middle of the triangular seat (443). A reset unit (445) is installed at the center of the upper surface of the lifting frame (441). The reset unit (445) includes a disc (4451) installed at the center of the upper surface of the lifting frame (441). A column (4452) is installed at the center of the upper surface of the disc (4451). Metal strips (4453) are equidistantly installed on the outer wall of the column (4452) along the circumference. The metal strips (4453) are connected to a power source and are also electrically connected to an alarm light (42). Several second support rods (4454) are equidistantly installed along the outer edge of the upper surface of the disc (4451) along the circumference. A ring seat is installed at the top of the second support rods (4454). 4455), the outer wall of the ring seat (4455) is equidistantly fitted with counterweights (4456) along the circumferential direction. The counterweights (4456) are located between two adjacent metal strips (4453). One end of the connecting rod (4457) is installed on the outside of the counterweights (4456) through a pin, and the other end of the connecting rod (4457) is connected to the bottom of the trigger rod (444) through a pin. Under the action of the gravity of the counterweights (4456), the connecting rod (4457) is pushed up, causing the connecting rod (4457) to pull the trigger rod (444) up, thereby realizing the reset of the trigger rod (444).

2. The sorting device for detecting damage during cardboard box processing according to claim 1, characterized in that, The detection mechanism (3) includes a housing (31), the front side of which is installed with the controller (5), and the four corners of the lower surface of the housing (31) are equipped with support legs (32), and the support legs (32) are installed with the roller conveyor (2). The center of the upper surface of the housing (31) is equipped with a driver (33), and the inside of the housing (31) is equipped with scanning components (34).

3. The sorting device for detecting damage during cardboard box processing according to claim 2, characterized in that, The scanning component (34) includes a bushing (341) installed at the bottom of the housing (31). A rotating shaft (342) is installed in the middle of the bushing (341). A drive gear (343) and a swing arm (346) are installed at the upper and lower ends of the rotating shaft (342). The drive gear (343) can drive the rotating shaft (342) to rotate under the drive of the driver (33). A mounting bracket (344) is installed at the bottom of the outer wall of the bushing (341). A video recorder (345) electrically connected to the controller (5) is installed on the top of the left side wall of the mounting bracket (344). The controller (5) analyzes the image signal fed back by the video recorder (345). A lifting rod (347) is inserted into the end of the swing arm (346) away from the rotating shaft (342).

4. The sorting device for detecting damage during cardboard box processing according to claim 3, characterized in that, The video recorder (345) is tilted downwards at the recording angle.

5. The sorting device for detecting damage during cardboard box processing according to claim 4, characterized in that, The scanning component (34) also includes a rotating rod (348) mounted on the bottom inner side of the mounting frame (344) via a bearing. The rotating rod (348) has a first support rod (349) installed at both ends of its outer wall. The other end of the first support rod (349) is equipped with a reinforcing rib (3410). The outer wall of the reinforcing rib (3410) is fitted with a sliding sleeve (3411), and the sliding sleeve (3411) is installed with the lifting rod (347). The lifting rod (347) is driven to make a circular motion by the swing rod (346), which pulls the reinforcing rib (3410) to swing. An infrared laser (3412) is installed in the middle of the outer wall of the rotating rod (348). The infrared laser (3412) emits infrared laser light outward. The laser light hits the surface of the carton, and the quality of the carton is judged based on the laser light state.

Images