A conveying device for luggage production

Abstract

The application provides a conveying device for luggage production, and relates to the technical field of luggage production equipment. The conveying device for luggage production comprises a main box body, a workbench plate is fixedly arranged on the top of the main box body, support frame bodies are fixedly arranged on the four surfaces of the main box body, conveying devices are fixedly installed on the four support frame bodies, a transmission-in conveying table is fixedly arranged on one of the support frame bodies, and a first transmission-out table, a second transmission-out table and a third transmission-out table are fixedly arranged on the other three support frame bodies. The conveying device can accurately identify whether the luggage has shape defects such as deformation and size exceeding the standard, the detection precision is much higher than manual detection, is not affected by subjective factors, the detection result is stable and reliable, and the problems that appearance shape and weight online detection and intelligent distribution cannot be simultaneously realized on the luggage production line in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of luggage production equipment technology, specifically a conveying device for luggage production. Background Technology

[0002] On automated production lines for bags and luggage, finished bags and luggage must undergo quality inspection before entering the packaging process. Traditional bag and luggage quality inspection mainly relies on manual labor. Workers visually inspect the bags for deformation and whether their dimensions meet standards, while also measuring their weight by hand or on a scale. This manual inspection method has the following significant drawbacks: Low testing efficiency makes it difficult to match the pace of high-speed automated production lines, becoming a production bottleneck; The accuracy of detection is greatly affected by subjective factors such as worker experience and fatigue level, which can easily lead to missed detections and false detections. Manual sorting is labor-intensive, has high labor costs, and is prone to sorting errors, resulting in defective products entering the market. Therefore, this invention proposes a conveying device for bag production with high integration, good detection accuracy, and high sorting efficiency to solve the problems mentioned in the background art. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a conveying device for bag production, which solves the problem that existing bag production lines cannot simultaneously achieve online detection of appearance and weight, as well as intelligent sorting.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A conveying device for bag production includes a main body, a worktable fixedly mounted on the top of the main body, support frames fixedly mounted on all four sides of the main body, and conveying devices fixedly mounted on each of the four support frames. An infeed conveyor is fixedly mounted on one of the support frames, and a first conveyor plate, a second conveyor plate, and a third conveyor plate are fixedly mounted on the other three support frames, respectively. A control center and a sorting module are respectively arranged on both sides of the main body, and a steering module is arranged inside the main body. Inside the main housing, below the workbench, is a motor housing. Inside the motor housing is a steering motor. The output end of the steering motor is fixedly mounted with a rotating shaft. The top end of the rotating shaft passes through the workbench and is fixedly mounted with a steering wheel. The steering wheel is equipped with a weight detection module. The above technical solution enables precise turning of bags at the inspection station, while weight detection is completed during the turning process. It integrates conveying, turning and weight detection functions into one, which greatly saves equipment floor space and improves the space utilization of the production line.

[0005] Furthermore, the control center is equipped with a control panel and a support rod. A first vision inspection camera is fixedly installed on the top of the support rod. The first vision inspection camera is located at the top of the workbench of the main housing. The first vision inspection camera is an area scan industrial camera, and the four second vision inspection cameras are all line scan industrial cameras. By employing the above technical solution, which combines area scan cameras to capture images of the top of the bag and line scan cameras to capture images of the sides of the bag, we can obtain all-round, blind-spot-free information about the bag's appearance, ensuring comprehensive inspection and avoiding missed detections due to a single perspective.

[0006] Furthermore, the sorting module is a six-axis robotic arm, the bottom of the sorting module is a support base, the top of the support base is fixedly mounted with the robotic arm, and the output end of the robotic arm is fixedly mounted with a sorting plate. Through the above technical solution, the six-axis robotic arm has six degrees of freedom, enabling it to move flexibly in three-dimensional space. It can adapt to the sorting needs of bags of different sizes and postures, and the sorting action is precise and fast, which can effectively improve sorting efficiency.

[0007] Furthermore, a second vision inspection camera is fixedly installed at each of the four top corners of the workbench of the main housing; With the above technical solution, four second vision inspection cameras are respectively oriented towards the center of the worktable, which can simultaneously capture images of the four sides of the bag. This allows for all-around appearance inspection without rotating the bag, shortening the inspection cycle and improving inspection efficiency.

[0008] Furthermore, the weight detection module includes multiple pressure sensors arranged in a ring array on the upper surface of the steering wheel. The top of each pressure sensor is flush with the upper surface of the steering wheel, and the output of all pressure sensors is electrically connected to the control center. The above technical solution, which uses a ring array of multiple pressure sensors, can evenly distribute the weight of the bags, improve the accuracy of weight detection, and accurately measure the total weight even if the bag is placed in a slightly different position, thus enhancing the fault tolerance of the equipment.

[0009] Furthermore, the image processing unit of the control center processes the images acquired by the camera using a preset algorithm, which includes a median filtering algorithm, a histogram equalization algorithm, and a Hausdorff distance matching algorithm. Using the above technical solution, the first vision inspection camera captures a top-down grayscale image of the bag. Four secondary vision detection cameras respectively captured grayscale images of the four sides of the bag. , , , To eliminate the effects of noise and uneven lighting, the acquired images were preprocessed using median filtering and histogram equalization. The median filtering formula is: ; in This is the radius of the filtering window, usually taken as 1 or 2; This indicates the midpoint operation; The formula for histogram equalization is: ; in For the first image in the original image grayscale value; The grayscale value is The number of pixels; This represents the total number of pixels in the image. This is the grayscale value after equalization; After image acquisition and preprocessing, the extracted bag contours are matched with pre-stored standard bag contour templates through edge detection, contour extraction, shape matching, and defect determination. Hausdorff distance is used as the metric for matching degree. The Hausdorff distance formula is: ; in, Let the set of outline points of the bag to be inspected be... The set of contour points for a standard template. Represents the Euclidean distance, sets the shape matching threshold. ,when At that time, the shape of the bag is deemed acceptable. At that time, it was determined that the bag had shape defects; At the same time, the calculated bag dimensions , , Compared with standard size range , , If any dimension exceeds the standard range during the comparison, it is also judged as a shape defect; By combining multiple image processing algorithms, interference factors in the production environment can be effectively eliminated, the outline features of bags can be accurately extracted and matched with standard templates, and not only can obvious deformations and size deviations be detected, but also minor shape defects can be identified, which greatly improves the accuracy and reliability of appearance inspection.

[0010] Furthermore, the input conveyor, the first conveyor platform, the second conveyor platform and the third conveyor platform all adopt belt conveyors, and the conveying speed of each conveyor platform can be independently adjusted through the control center; Through the above technical solutions, the belt conveyor operates smoothly and with low noise, ensuring the stability of the bags during the conveying process. At the same time, the independent speed adjustment design of each conveyor can flexibly adjust the conveying speed according to different production rhythms and bag specifications, enabling the equipment to adapt to different production needs.

[0011] Furthermore, the diameter of the steering wheel is greater than the diagonal length of the largest size suitcase, and the upper surface of the steering wheel is provided with an anti-slip rubber layer; The above technical solution ensures that bags of various sizes can be placed stably on the steering wheel. The anti-slip rubber layer increases the friction between the bag and the steering wheel, preventing the bag from sliding or shifting during steering, thus ensuring steering accuracy and the accuracy of the test results.

[0012] Furthermore, the working surface of the dispensing plate is provided with a flexible buffer pad, which is made of silicone or polyurethane material.

[0013] The above technical solution can protect the surface of the bags during the sorting process, preventing the sorting plate from directly contacting the bags and causing scratches, bumps, or other damage, thus ensuring the appearance quality of the products.

[0014] This invention provides a conveying device for bag production. It has the following advantages: 1. This invention provides a conveying device for bag production. By integrating a weight detection device on the steering wheel, and cooperating with a first vision detection camera at the top and second vision detection cameras at the four corners, it can simultaneously complete appearance shape and size detection and weight detection during bag conveying. The detection efficiency is high, which can match the cycle time of high-speed automated production lines. Furthermore, through image preprocessing, feature extraction, and template matching algorithms, it can accurately identify whether bags have shape defects such as deformation or size exceeding the standard. The detection accuracy is far higher than that of manual inspection, and it is not affected by subjective factors. The detection results are stable and reliable.

[0015] 2. This invention provides a conveying device for bag production, which can intelligently sort bags to different conveyor platforms according to the test results. Qualified bags are conveyed to the first conveyor platform to enter the next process, bags with shape defects are sorted to the shape defect collection area corresponding to the second conveyor platform, and bags with weight defects are sorted to the weight defect collection area corresponding to the third conveyor platform. This realizes the classification and processing of defective products, which is convenient for subsequent rework and statistical analysis. The whole equipment is modular and highly integrated, with a small footprint. It can be easily integrated into existing bag production lines with low modification costs and has good promotion and application value. Attached Figure Description

[0016] Figure 1 This is a first-view isometric view of the conveying device for bag production according to the present invention; Figure 2 This is a second-view isometric view of the conveying device for bag production according to the present invention; Figure 3 This is a front view of the conveying device for bag production according to the present invention; Figure 4 This is a top view of the conveying device for bag production according to the present invention; Figure 5 This is a schematic diagram of the steering module of the main body of the conveying device for bag production according to the present invention; Figure 6 This is a flowchart illustrating the workflow of the conveying device for bag production according to the present invention.

[0017] In the picture: 1. Main housing; 101. Workbench; 2. Support frame; 201. Input conveyor; 202. First conveyor platform; 203. Second conveyor platform; 204. Third conveyor platform; 3. Control center; 301. Control panel; 302. Support rod; 303. First vision inspection camera; 304. Second vision inspection camera; 4. Steering module; 401. Motor housing; 402. Steering motor; 403. Rotating shaft; 404. Steering wheel; 5. Distribution module; 501. Support base; 502. Robotic arm; 503. Distribution plate. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: like Figure 1-5As shown, this embodiment of the invention provides a conveying device for bag production, including a main body 1. A workbench 101 is fixedly installed on the top of the main body 1. Support frames 2 are fixedly installed on all four sides of the main body 1. Conveying devices are fixedly installed on each of the four support frames 2. An infeed conveyor 201 is fixedly installed on one of the support frames 2, and a first conveyor 202, a second conveyor 203, and a third conveyor 204 are fixedly installed on the other three support frames 2, respectively. A control center 3 and a sorting module 5 are respectively installed on both sides of the main body 1. A steering module 4 is installed inside the main body 1. A motor housing 401 is fixedly installed inside the main body 1 below the workbench 101. A steering motor 402 is fixedly installed inside the motor housing 401. A rotating shaft 403 is fixedly installed at the output end of the steering motor 402. A steering wheel 404 is fixedly installed at the top end of the rotating shaft 403 through the workbench 101. A weight detection module is installed on the steering wheel 404. It can achieve precise turning of bags at the inspection station and complete weight detection during the turning process. It integrates conveying, turning and weight detection functions into one, which greatly saves the equipment floor space and improves the space utilization of the production line. The control center 3 is equipped with an operating console 301 and a support rod 302. A first vision inspection camera 303 is fixedly installed on the top of the support rod 302. The first vision inspection camera 303 is located at the top of the workbench 101 of the main box 1. The first vision inspection camera 303 is an area scan industrial camera. The four second vision inspection cameras 304 are all line scan industrial cameras. The combination of area scan cameras to collect images of the top of the bag and line scan cameras to collect images of the side of the bag can obtain the appearance information of the bag from all directions without blind spots, ensuring the comprehensiveness of the inspection and avoiding the problem of missed inspection due to a single perspective. The sorting module 5 is a six-axis robotic arm. The bottom of the sorting module 5 is a support base 501, and the top of the support base 501 is fixedly mounted with the robotic arm 502. The output end of the robotic arm 502 is fixedly mounted with a sorting plate 503. The six-axis robotic arm has six degrees of freedom and can move flexibly in three-dimensional space. It can adapt to the sorting needs of bags of different specifications and postures. The sorting action is precise and fast, which can effectively improve sorting efficiency. A second vision inspection camera 304 is fixedly installed at the top four corners of the workbench 101 of the main box 1. The four second vision inspection cameras face the center of the workbench and can simultaneously capture images of the four sides of the bag. The bag can be inspected in all directions without being rotated, which shortens the inspection cycle and improves the inspection efficiency. The weight detection module includes multiple pressure sensors arranged in a ring array on the upper surface of the steering wheel 404. The top of the pressure sensors is flush with the upper surface of the steering wheel 404. The output of all pressure sensors is electrically connected to the control center 3. The design of multiple pressure sensors in a ring array can evenly distribute the weight of the bag and improve the accuracy of weight detection. At the same time, even if the bag is slightly deviated from its position, the total weight can be accurately measured, which enhances the fault tolerance of the equipment. The image processing unit of control center 3 processes the images captured by the camera using preset algorithms, including median filtering, histogram equalization, and Hausdorff distance matching. The first vision detection camera captures a top-view grayscale image of the bag. Four secondary vision detection cameras respectively captured grayscale images of the four sides of the bag. , , , To eliminate the effects of noise and uneven lighting, the acquired images were preprocessed using median filtering and histogram equalization. The median filtering formula is: ; in This is the radius of the filtering window, usually taken as 1 or 2; This indicates the midpoint operation; The formula for histogram equalization is: ; in For the first image in the original image grayscale value; The grayscale value is The number of pixels; This represents the total number of pixels in the image. This is the grayscale value after equalization; After image acquisition and preprocessing, the extracted bag contours are matched with pre-stored standard bag contour templates through edge detection, contour extraction, shape matching, and defect determination. Hausdorff distance is used as the metric for matching degree. The Hausdorff distance formula is: ; in, Let the set of outline points of the bag to be inspected be... The set of contour points for a standard template. Represents the Euclidean distance, sets the shape matching threshold. ,when At that time, the shape of the bag is deemed acceptable. At that time, it was determined that the bag had shape defects; At the same time, the calculated bag dimensions , , Compared with standard size range , , If any dimension exceeds the standard range during the comparison, it is also judged as a shape defect; By combining multiple image processing algorithms, interference factors in the production environment can be effectively eliminated, the outline features of bags can be accurately extracted and matched with standard templates, and not only can obvious deformation and size deviations be detected, but also minor shape defects can be identified, which greatly improves the accuracy and reliability of appearance inspection. The infeed conveyor 201, the first conveyor 202, the second conveyor 203, and the third conveyor 204 all use belt conveyors, and the conveying speed of each conveyor can be independently adjusted through the control center 3. The belt conveyor runs smoothly and has low noise, which can ensure the stability of the bags during the conveying process. At the same time, the independent speed adjustment design of each conveyor can flexibly adjust the conveying speed according to different production rhythms and bag specifications, so that the equipment can adapt to different production needs. The diameter of the steering wheel 404 is larger than the diagonal length of the largest size bag. The upper surface of the steering wheel 404 is provided with an anti-slip rubber layer, which can ensure that bags of various sizes can be placed stably on the steering wheel. The anti-slip rubber layer can increase the friction between the bag and the steering wheel, prevent the bag from sliding or shifting during the steering process, and ensure steering accuracy and the accuracy of the detection results. The working surface of the distribution plate 503 is provided with a flexible buffer pad. The flexible buffer pad is made of silicone or polyurethane material, which can protect the surface of the bag during the distribution process, avoid the distribution plate directly contacting the bag and causing scratches, bumps and other damage, and ensure the appearance quality of the product.

[0020] Example 2: like Figure 6 As shown in the figure, an embodiment of the present invention provides a conveying device for bag production. The working steps of the conveying device are as follows: Step 1: Bags and suitcases are brought in; The finished bags from the previous process are conveyed to the workbench 101 on top of the main body 1 via the conveyor 201, and finally stop at the center of the steering wheel 404. Step 2: Weight check; The pressure sensor on the steering wheel 404 simultaneously collects the weight signal of the bag and transmits the signal to the control center 3. The control center 3 calculates the total weight of the bag according to the preset calibration coefficient. and with standard weight range Compare and record the weight detection results; Step 3: Visual inspection; The first visual inspection camera 303 captures a top-view image of the bag, while four second visual inspection cameras 304 capture images of the four sides of the bag. The image processing unit of the control center 3 performs preprocessing, edge detection, and contour extraction on the captured images and calculates the length of the bag. ,width and height The extracted bag outline is compared with the standard size range, and the Hausdorf distance is matched with the standard template to determine whether the bag has shape defects and record the visual inspection results. Step 4: Result Determination and Direction; The control center makes a judgment based on the combined weight detection results and visual inspection results: If the weight and shape are both qualified, the steering motor 402 drives the steering wheel 404 to make the bag face the first transmission platform 203; If the shape is not up to standard, regardless of whether the weight is up to standard, the steering motor 402 drives the steering wheel 404 to rotate, so that the bag faces the second transmission table 202; If the shape is acceptable but the weight is not, the steering motor 402 drives the steering wheel 404 to rotate, so that the bag faces the third transfer table 204; Step 5: Distribution and delivery; After the steering is completed, the six-axis sorting module 5 drives the sorting plate 503 to move, smoothly pushing the bags on the steering wheel 404 onto the corresponding conveyor platform. Qualified bags enter the next packaging process through the first conveyor platform 202, bags with shape defects are transported to the shape defect collection area for rework through the second conveyor platform 203, and bags with weight defects are transported to the weight defect collection area for cause investigation and handling through the third conveyor platform 204. Step 6: Reset; After the sorting is completed, the steering wheel 404 and the sorting module 5 automatically reset, waiting for the next bag to be detected and sorted.

[0021] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0022] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A conveying device for bag production, comprising a main box (1), characterized in that: The main housing (1) is fixedly provided with a workbench (101) on the top. The main housing (1) is fixedly provided with a support frame (2) on all four sides. Each of the four support frames (2) is fixedly provided with a conveying device. One of the support frames (2) is fixedly provided with an infeed conveyor (201). The other three support frames (2) are fixedly provided with a first conveyor plate (202), a second conveyor plate (203), and a third conveyor plate (204), respectively. The main housing (1) is provided with a control center (3) and a sorting module (5) on both sides. The main housing (1) is provided with a steering module (4) inside. The main housing (1) is located below the workbench (101) and a motor housing (401) is fixedly installed inside. A steering motor (402) is fixedly installed inside the motor housing (401). A rotating shaft (403) is fixedly installed at the output end of the steering motor (402). A steering wheel (404) is fixedly installed at the top end of the rotating shaft (403) through the workbench (101). A weight detection module is installed on the steering wheel (404).

2. The conveying device for bag production according to claim 1, characterized in that: The control center (3) is equipped with a control panel (301) and a support rod (302). A first vision inspection camera (303) is fixedly installed on the top of the support rod (302). The first vision inspection camera (303) is located at the top of the workbench (101) of the main body (1). The first vision inspection camera (303) is an area array industrial camera, and the four second vision inspection cameras (304) are all line array industrial cameras.

3. The conveying device for bag production according to claim 1, characterized in that: The sorting module (5) is a six-axis robotic arm. The bottom of the sorting module (5) is a support base (501). The top of the support base (501) is fixedly installed with a robotic arm (502). The output end of the robotic arm (502) is fixedly installed with a sorting plate (503).

4. The conveying device for bag production according to claim 1, characterized in that: A second vision inspection camera (304) is fixedly installed at the top four corners of the workbench (101) of the main box (1).

5. A conveying device for bag production according to claim 1, characterized in that: The weight detection module includes multiple pressure sensors arranged in a ring array on the upper surface of the steering wheel (404). The top of the pressure sensors is flush with the upper surface of the steering wheel (404), and the output of all pressure sensors is electrically connected to the control center (3).

6. A conveying device for bag production according to claim 2, characterized in that: The image processing unit of the control center (3) processes the images acquired by the camera using a preset algorithm, which includes a median filtering algorithm, a histogram equalization algorithm, and a Hausdorff distance matching algorithm.

7. A conveying device for bag production according to claim 1, characterized in that: The input conveyor (201), the first conveyor (202), the second conveyor (203) and the third conveyor (204) are all belt conveyors, and the conveying speed of each conveyor can be independently adjusted by the control center (3).

8. A conveying device for bag production according to claim 1, characterized in that: The diameter of the steering wheel (404) is greater than the diagonal length of the largest size bag, and the upper surface of the steering wheel (404) is provided with an anti-slip rubber layer.

9. A conveying device for bag production according to claim 3, characterized in that: The working surface of the dispensing plate (503) is provided with a flexible buffer pad, which is made of silicone or polyurethane material.

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