Defective product rejection system and defective product rejection method for packaging bags
By introducing a detection and judgment device and a waste discharge system into the packaging bag forming machine, waste packaging bags are automatically detected and separated, solving the problem of low efficiency caused by manual selection in the existing technology, realizing efficient and automated waste removal, and ensuring product quality.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-07-18
- Publication Date
- 2026-03-19
Smart Images
Figure CN2025109335_19032026_PF_FP_ABST
Abstract
Description
Waste discharge system and method for packaging bag TECHNICAL FIELD
[0001] The present application relates to the technical field of bag making, in particular to a waste discharge system and method for packaging bag. BACKGROUND
[0002] Packaging bags are closely related to our lives. Common packaging bags include non-woven bags, woven bags, plastic bags, etc. For example, non-woven bags have the characteristics of environmental protection and practicality, and have been widely promoted and used in recent years, thereby promoting the rapid development of non-woven bag automatic forming technology. However, with the development of non-woven fabrics in China in recent years, three-dimensional bags with strong three-dimensionality have become the mainstream of non-woven bags. The existing non-woven three-dimensional bags are formed by a three-dimensional bag forming machine in one process. In the process, a mold lifting device is needed to press the flat non-woven fabric into a cuboid through the mold. After the non-woven fabric is processed into a non-woven three-dimensional bag, it is necessary to flatten and arrange the bags into a pile for packaging and transportation.
[0003] In the forming process of the existing three-dimensional bag forming machine, waste products may occur. The highest waste rate is concentrated in the handbag part and the side part. Common waste problems are that the handbag is not bonded, the handbag is damaged, the side part is damaged by hot pressing, or the side part is not bonded. However, the existing technology can only judge and dispose of waste products by manual selection after forming, which has the problem of low work efficiency.
[0004] Therefore, the existing packaging bag forming machine has the problems of being unable to judge waste products and being unable to dispose of waste products. SUMMARY
[0005] The purpose of the present application is to solve the problem of waste packaging bags produced by the existing packaging bag forming machine needing to be identified and picked by hand, which increases labor costs and reduces work efficiency.
[0006] To solve the above technical problems, the embodiments of the present application disclose a waste discharge system for packaging bags, which comprises a waste discharge device and a detection and judgment device, and the waste discharge device and the detection and judgment device are communicatively connected.
[0007] The waste discharge device comprises a first conveying roller group, a waste discharge unit and a second conveying roller group arranged in sequence along the conveying path of the packaging bag. The first conveying roller group and the second conveying roller group are used to convey the packaging bag along the conveying path and each comprises at least two conveying rollers. The waste discharge unit comprises a path switching assembly and a waste product collection assembly. The inlet of the path switching assembly is in communication with the outlet of the first conveying roller group, and the outlet of the path switching assembly is switchably in communication with the waste product collection assembly or the inlet of the second conveying roller group.
[0008] The detection and judgment device comprises an information detection unit and an information processing unit; the information detection unit comprises a detection component arranged on the upstream of the waste discharge device along the transmission path, the detection component detects the detection information of each packaging bag on the transmission path in real time one by one, the detection information comprises the appearance information of the handle part and the appearance information of the side edge sealing part, and the detection information of each packaging bag is transmitted to the information processing unit; the information processing unit comprises a judgment module and a calibration module, the judgment module judges whether the packaging bag is a waste packaging bag according to the detection information of each packaging bag, and when the judgment module judges that the packaging bag is a waste packaging bag, the calibration module calibrates the waste packaging bag and transmits the calibration result to the control unit.
[0009] The control unit controls the outlet of the path switching assembly according to the calibration result, when the qualified packaging bag is transmitted to the waste discharge unit along the transmission path, the outlet of the path switching assembly is communicated with the inlet of the second conveying roller group; when the packaging bag calibrated as a waste packaging bag is transmitted to the waste discharge unit along the transmission path, the outlet of the path switching assembly is communicated with the waste collection assembly.
[0010] By adopting the technical scheme, the application discloses a waste discharge system applied to a packaging bag making machine, the waste discharge system comprises a waste discharge device and a detection and judgment device, the detection and judgment device detects and judges whether each packaging bag produced is a waste packaging bag in real time, and sends corresponding calibration information to the waste discharge device (waste discharge unit) if it is a waste packaging bag, so that the waste packaging bag is subjected to waste discharge treatment by the waste discharge device, and the qualified packaging bag is subjected to normal conveying, arrangement, packaging and other treatments, so that it is ensured that only qualified packaging bags are arranged in the bag arranging device, the waste discharge system of the packaging bag disclosed by the application can ensure that only products (qualified packaging bags) meeting the quality standards enter the market, and helps to improve the consistency and reliability of the produced packaging bags.
[0011] Further, the waste discharge system of the packaging bag disclosed by the application can automatically detect through the detection and judgment device, and the waste discharge device and the detection and judgment device are communicatively connected, the whole system is highly intelligent and automatic, solves the problem that the packaging bag making machine in the prior art cannot automatically detect and discharge waste, and can only discharge waste through manual selection or detection, has the advantages of high efficiency and high automation, and can judge and confirm the same waste packaging bag and discharge the waste packaging bag.
[0012] Further, the waste discharge system of the packaging bag disclosed by the application can automatically detect through the detection and judgment device, and the waste discharge device and the detection and judgment device are communicatively connected, the whole system is highly intelligent and automatic, solves the problem that the packaging bag making machine in the prior art cannot automatically detect and discharge waste, and can only discharge waste through manual selection or detection, has the advantages of high efficiency and high automation, and can judge and confirm the same waste packaging bag and discharge the waste packaging bag.
[0013] The embodiment of the present application also discloses a waste discharge system of a packaging bag, the waste discharge unit comprises a control unit, and the path switching assembly comprises a waste discharge driving part and a waste discharge stop part, the waste product collecting assembly comprises a waste product conveying belt located at the outlet of the waste discharge stop part, the control unit is in communication connection with the detection and judgment device and controls the waste discharge driving part to act according to the calibration result, the waste discharge driving part can drive the waste discharge stop part to reciprocate towards the conveying path, wherein when the packaging bag calibrated as the waste product packaging bag is conveyed along the conveying path to the path switching assembly, the waste discharge driving part drives the waste discharge stop part to move towards the conveying path, and the outlet of the waste discharge stop part is in communication with the inlet of the waste product conveying belt.
[0014] According to the technical scheme, the control unit can control the waste discharge driving part to act according to the calibration result of the waste product packaging bag conveyed by the calibration module, and the waste product packaging bag is guided to the waste product collecting assembly, the waste discharge system is arranged on the conveying path of the packaging bag, and the waste product packaging bag can be guided to the waste product collecting assembly by changing the path during waste discharge, without the need of additionally arranging a grabbing mechanism for the waste product packaging bag, and the structure is simple.
[0015] Further preferably, the first conveying roller group and the second conveying roller group are arranged at intervals along the conveying path, and the waste discharge unit is arranged between the intervals of the first conveying roller group and the second conveying roller group.
[0016] The waste discharge driving part comprises a driving motor, an eccentric wheel mechanism and a transmission connecting rod, the eccentric wheel mechanism is in transmission connection with the output end of the driving motor, one end of the transmission connecting rod is in rotation connection with the eccentric wheel mechanism, and the other end is in rotatable connection with the waste discharge stop part, and the waste discharge stop part comprises a waste discharge stop plate, and the waste discharge stop plate is arranged in an inclined manner.
[0017] The waste discharge unit further comprises a mounting seat arranged on the rack, the driving motor is fixedly arranged on one side of the mounting seat, the mounting seat is provided with a guide rail, and the waste discharge stop plate is provided with a movable block matched with the guide rail and movable.
[0018] The waste discharge stop plate can be switched between a retracted state and a stop state, when the waste discharge stop plate is in the retracted state, the waste discharge stop plate is located on one side of the conveying path, and the outlet of the waste discharge unit is in communication with the inlet of the second conveying roller group.
[0019] When the waste discharge stop plate is in the stop state, the waste discharge stop plate is located in the conveying path, and the outlet of the waste discharge unit is in communication with the inlet of the waste product collecting assembly.
[0020] The technical scheme is adopted, when the waste packaging bag is transmitted to the first conveying roller group, the driving motor controls the eccentric wheel mechanism to rotate half a circle, so that the waste discharge stop plate is inserted into the interval between the first conveying roller group and the second conveying roller group to block the transmission path of the packaging bag, at this time, the waste packaging bag is transmitted, and then is blocked by the waste discharge stop plate and changes the transmission path and then falls on the waste conveying belt below, when the waste discharge is finished, the driving motor controls the eccentric wheel mechanism to continue to rotate half a circle, and the transmission connecting rod drives the waste discharge stop plate to reset to the retracted state. It has the advantages of simple and compact structure, high transmission efficiency, smooth movement and accurate control. And the inclined arrangement of the waste discharge stop plate can provide a guiding effect for the waste packaging bag, which is more conducive to the waste packaging bag discharge.
[0021] The embodiment of the application also discloses a waste packaging bag discharge system, and the path switching assembly comprises an adjustable waste discharge roller group arranged between the first conveying roller group and the second conveying roller group.
[0022] The adjustable waste discharge roller group comprises a fixed rotating roller and an adjustable rotating roller, and a transmission path for the packaging bag is formed between the fixed rotating roller and the adjustable rotating roller; and an adjusting driving mechanism is arranged on one side of the adjustable rotating roller.
[0023] The adjusting driving mechanism is in transmission connection with the adjustable rotating roller, and the adjusting driving mechanism can drive the adjustable rotating roller to move towards the side away from the fixed rotating roller, so that the adjustable waste discharge roller group is switched between the conveying state and the interruption state.
[0024] When the adjustable rotating roller is in the conveying state, the packaging bag passes through the adjustable waste discharge roller group from the first conveying roller group, and the outlet of the adjustable waste discharge roller group is in communication with the inlet of the second conveying roller group.
[0025] When the adjustable rotating roller is in the interruption state, the adjustable rotating roller is separated from the fixed rotating roller and is located on the side away from the fixed rotating roller, and the outlet of the adjustable waste discharge roller group is in communication with the waste collection assembly.
[0026] The technical scheme is adopted, when the waste packaging bag is transmitted to the first conveying roller group, the driving motor controls the eccentric wheel mechanism to rotate half a circle, so that the waste discharge stop plate is inserted into the interval between the first conveying roller group and the second conveying roller group to block the transmission path of the packaging bag, at this time, the waste packaging bag is transmitted, and then is blocked by the waste discharge stop plate and changes the transmission path and then falls on the waste conveying belt below, when the waste discharge is finished, the driving motor controls the eccentric wheel mechanism to continue to rotate half a circle, and the transmission connecting rod drives the waste discharge stop plate to reset to the retracted state. It has the advantages of simple and compact structure, high transmission efficiency, smooth movement and accurate control. And the inclined arrangement of the waste discharge stop plate can provide a guiding effect for the waste packaging bag, which is more conducive to the waste packaging bag discharge.
[0027] Further preferably, the adjusting driving mechanism comprises a driving motor and a swing transmission mechanism, one end of the swing transmission mechanism is rotationally connected with the driving motor, and the other end is transmissionally connected with the adjustable rotating roller, when the waste packaging bag is conveyed along the conveying path to the upstream of the waste discharging unit, the control unit controls the driving motor to work, the driving motor drives the swing transmission mechanism to act, and drives the adjustable rotating roller to swing towards the direction away from the fixed rotating roller, at this time, the adjustable rotating roller is in the interrupt state, the outlet of the adjustable waste discharging roller group is communicated with the inlet of the second conveying roller group, and the packaging bag marked as the waste packaging bag is discharged.
[0028] The adjusting driving mechanism comprises a driving motor and a swing transmission mechanism, one end of the swing transmission mechanism is rotationally connected with the driving motor, and the other end is transmissionally connected with the adjustable rotating roller, when the waste packaging bag is conveyed along the conveying path to the upstream of the waste discharging unit, the control unit controls the driving motor to work, the driving motor drives the swing transmission mechanism to act, and drives the adjustable rotating roller to swing towards the direction away from the fixed rotating roller, at this time, the adjustable rotating roller is in the interrupt state, the outlet of the adjustable waste discharging roller group is communicated with the inlet of the second conveying roller group, and the packaging bag marked as the waste packaging bag is discharged.
[0029] The embodiment of the present application also discloses a waste discharging system of a packaging bag, the waste collecting assembly comprises a waste conveying belt arranged below the waste discharging device, and a waste discharging conveying motor is arranged on one side of the waste conveying belt, when the waste packaging bag is discharged from the conveying path to the waste conveying belt, the waste discharging conveying motor drives the waste conveying belt to drive and convey the waste packaging bag to the waste area.
[0030] By adopting the technical scheme, the waste conveying belt can convey the discharged waste packaging bag to the waste area, and the waste collecting plate can transfer the discharged waste packaging bag to the waste collecting box.
[0031] The embodiment of the present application also discloses a waste discharging system of a packaging bag, the detection member comprises a first detector and a second detector arranged upstream of the waste discharging device.
[0032] The first detector comprises a first camera arranged on the opening side of the packaging bag along the conveying path of the packaging bag, and the first camera detects the appearance image of the handle part of each packaging bag on the conveying path in real time.
[0033] The second detector comprises a second camera arranged on the two side parts of the packaging bag along the conveying path of the packaging bag, and the second camera detects the appearance image of the side edge sealing part of each packaging bag on the conveying path in real time.
[0034] The detection component is provided with the first camera and the second camera, and the appearance images of the handle parts and the side sealing parts of each packaging bag on the transmission path are detected in real time respectively, so that the waste packaging bags can be detected and found in time.
[0035] The judgment module judges the appearance image of the handle part detected by the first camera and the appearance image of the handle part of the qualified product, and when the difference between the appearance image of the handle part and the appearance image of the handle part of the qualified product is greater than a preset value, the judgment module judges that the packaging bag is a waste packaging bag and transmits the calibration result to the control unit.
[0036] The judgment module judges the appearance image of the side sealing part detected by the second camera and the appearance image of the side sealing part of the qualified product, and when the difference between the appearance image of the side sealing part and the appearance image of the side sealing part of the qualified product is greater than a preset value, the judgment module judges that the packaging bag is a waste packaging bag and transmits the calibration result to the control unit.
[0037] The above technical scheme is adopted, when judging whether the packaging bag is a waste packaging bag, only the appearance image of each packaging bag and the appearance image of the qualified product are compared and analyzed, when the difference after analysis and comparison is greater than a preset value, the waste packaging bag is judged and the calibration result is transmitted to the control unit, further, the handle part and the side sealing part with the highest probability of waste are focused on, and after the waste appears, the calibration is transmitted to the waste removal device for waste removal.
[0038] The embodiment of the application also discloses a waste removal method of a packaging bag, which is applied to the waste removal system of any one of the packaging bags.
[0039] The detection component respectively acquires normal appearance images of the side sealing part and the handle part of the packaging bag, and trains a model, input information of the model is the normal appearance images collected in advance by the detection component, and output information of the model is images after denoising and optimization of the collected normal appearance images.
[0040] The judgment module extracts features of the images of the side sealing part and the handle part of the predetermined qualified packaging bag, extracts position features of the side sealing line and the handle of the qualified packaging bag, fits the features into a multi-point curve, and takes the multi-point curve as a calibration curve.
[0041] The detection component detects the appearance image of each to-be-tested packaging bag on the transmission path in real time, and transmits the appearance image of each to-be-tested packaging bag to the judgment module. The judgment module extracts features of the image of the side sealing part and the handle part of each to-be-tested packaging bag, extracts the position of the side sealing line and the handle of each to-be-tested packaging bag, and fits the corresponding position features of the to-be-tested packaging bag into a multi-point curve as a to-be-tested curve.
[0042] The judgment module judges the position difference between each point of the to-be-tested curve and each point of the calibration curve, sets a difference threshold, and screens out points in the to-be-tested curve that are greater than the difference threshold.
[0043] The judgment module judges whether the position difference of more than three consecutive points is greater than the difference threshold. If yes, the calibration module calibrates the packaging bag as a waste packaging bag; or
[0044] The judgment module judges whether the position difference of more than five points that are not continuous is greater than the difference threshold. If yes, the calibration module calibrates the packaging bag as a waste packaging bag.
[0045] If neither of the above two conditions is met, the confidence degree of the point being a fault point is calculated according to the distance between the corresponding two points and the interval between the two points.
[0046] If the confidence degree is higher than 70, the packaging bag is judged as a waste packaging bag.
[0047] The calibration module calculates the number of packaging bags between the waste packaging bag and the waste discharge device on the transmission path as N, and calibrates the waste packaging bag as N+1.
[0048] The calibration module transmits the calibration information of the waste packaging bag to the control unit. When the waste packaging bag is transmitted to the waste discharge unit along the transmission path, the control unit controls the waste discharge unit to act, so that the outlet of the path switching assembly is in communication with the waste collection assembly, and the calibrated waste packaging bag is excluded.
[0049] By adopting the technical scheme, the application further provides a waste packaging bag discharge method. The method is to first establish a training model by the judgment module, and to denoise and optimize the pre-collected normal appearance image, then to extract features of the image and fit the features into a multi-point curve as a calibration curve. In the waste judgment process, features of the appearance image of each to-be-tested packaging bag are also extracted, and the features are fitted into a multi-point curve as a to-be-tested curve. Then, whether the packaging bag is a waste packaging bag is judged by judging the fitted curves, which has the advantages of high accuracy and high efficiency.
[0050] The embodiment of the application further discloses a waste packaging bag discharge method. The detection component collects multiple images of a single to-be-tested packaging bag each time; wherein
[0051] The detection component collects an image of a single side edge of the packaging bag each time, the judging module extracts features from the image of the X side edges and obtains X side edge curves, and the X side edge curves are corrected to obtain a side edge correction curve.
[0052] The detection component collects an image of a single handle of the packaging bag each time, the judging module extracts features from the image of the Y handles and obtains Y handle curves, and the Y handle curves are corrected to obtain a handle correction curve.
[0053] The above technical solution is adopted, the detection component collects multiple images of a single packaging bag each time, and the multiple images are corrected to obtain a correction curve, thereby further improving the accuracy.
[0054] The embodiment of the application further discloses a waste packaging bag sorting method, the detection component further comprises an infrared emitter and an infrared receiver arranged on both sides of the packaging bag, the infrared emitter emits infrared rays, the infrared receiver receives the infrared rays and sends the infrared ray value to the judging module.
[0055] The judging module compares the received infrared ray value with a preset threshold value.
[0056] If the deviation value of the infrared ray value and the preset threshold value is ±10, it is judged that the packaging bag has no hole;
[0057] If the deviation value of the infrared ray value and the preset threshold value is ±10 to ±20, it is judged that the packaging bag may have a hole;
[0058] If the deviation value of the infrared ray value and the preset threshold value is greater than ±20, it is judged that the packaging bag has a hole, and the packaging bag is a waste packaging bag;
[0059] When it is judged that the packaging bag may have a hole, the image data of the packaging bag is collected by the camera, the image data is processed by using a color threshold algorithm, the RGB color threshold of the waste packaging bag is set to 100, and if the RGB of the packaging bag is greater than 100, the packaging bag is judged to be a waste packaging bag.
[0060] The above technical solution is adopted, the infrared emitter and the infrared receiver can further detect whether the packaging bag has a hole, the packaging bag with a hole is also marked as a waste packaging bag, and the detection accuracy of the packaging bag is improved.
[0061] The application has the following advantages:
[0062] The application discloses a waste discharging system applied to a packaging bag making machine, which comprises a waste discharging device and a detection and judgment device.
[0063] The determined waste packaging bag is discharged by the waste discharging device, and the qualified packaging bag is subjected to normal conveying, arranging, packing and other treatments. When the waste packaging bag passes through the waste discharging device, the path switching assembly on the waste discharging unit is switched to make the outlet and the waste collecting assembly communicate to discharge and collect the waste packaging bag. The waste discharging system of the packaging bag disclosed by the application can ensure that only the products (qualified packaging bags) meeting the quality standards enter the market, and helps to improve the consistency and reliability of the produced packaging bags. Moreover, the waste discharging system is arranged on the conveying path of the packaging bag, and can be realized by changing the path during waste discharging, without the need of additionally arranging a waste packaging bag grabbing mechanism, and has the advantages of simple structure, convenient control and rapid response. BRIEF DESCRIPTION OF DRAWINGS
[0064] Fig. 1 is a structural schematic view of the waste discharging device in the waste discharging system of the packaging bag making machine provided by the embodiment of the application;
[0065] Fig. 2 is a schematic view of one specific structure of the path switching assembly in the waste discharging system of the packaging bag making machine provided by the embodiment of the application;
[0066] Fig. 3 is a schematic view of one specific structure of the waste conveying belt in the waste discharging system of the packaging bag making machine provided by the embodiment of the application;
[0067] Fig. 4 is a working flow chart of the waste discharging system of the packaging bag making machine provided by the embodiment of the application;
[0068] Fig. 5 is a flow chart of the waste discharging method of the waste discharging system of the packaging bag making machine provided by the embodiment of the application;
[0069] Fig. 6 is a flow chart of the judgment of whether there is a hole in the waste discharging method of the waste discharging system of the packaging bag making machine provided by the embodiment of the application.
[0070] Label explanation: 100, first conveying roller group; 110, first driving conveying roller; 120, first driven conveying roller; 130, driving roller motor; 140, conveying gear; 150, conveying belt; 200, waste removal unit; 210, driving motor; 220, eccentric mechanism; 230, transmission connecting rod; 240, waste removal stop plate; 250, mounting seat; 260, guide rail; 270, moving block; 300, second conveying roller group; 310, second driving conveying roller; 320, second driven conveying roller; 400, waste conveying belt; 410, waste conveying motor; 420, conveying belt stop plate; 500, detection component; 510, first camera; 520, second camera; 600, judgment module; 700, calibration module; 800, control unit. DETAILED DESCRIPTION
[0071] Packaging bags are often used in production and life. Common types of packaging bags include non-woven bags, woven bags, plastic bags, etc. Taking non-woven bags as an example, non-woven bags have the characteristics of environmental protection and practicality. With the development of non-woven bags in China in recent years, three-dimensional bags with strong three-dimensionality have become the mainstream of non-woven bags. Existing non-woven three-dimensional bags are formed by a three-dimensional bag forming machine in one processing. In the processing, a mold lifting device is needed to press the flat non-woven fabric into a cuboid through the mold. In the forming process of the existing three-dimensional bag forming machine, waste may occur. The highest waste rate is concentrated in the handbag part and the side edge sealing part. Common waste problems are that the handbag is not bonded, the handbag is damaged, the side edge part is damaged or not bonded.
[0072] However, the existing non-woven bag making machine (as well as other related packaging bag making machines) does not have a waste removal system or device. When waste packaging bags occur, they can only be checked manually or manually picked out, increasing labor intensity and reducing production efficiency. Some bag making machines do not detect or check waste and are packaged together. After finding waste packaging bags during use, they are rejected or thrown away and not used. However, if waste packaging bags are not removed, it will reduce brand reputation and consumer trust.
[0073] Therefore, to solve the above technical problems and improve the performance of the bag making machine, the application discloses a waste removal system and method for packaging bags of a paper bag machine. The waste removal method for packaging bags can judge, confirm and calibrate waste packaging bags. The waste removal system can accurately and quickly remove waste packaging bags to ensure that all packaged packaging bags after production are qualified packaging bags, ensuring that only qualified packaging bags that meet quality standards enter the market, improving product competitiveness and consumer acceptance and trust.
[0074] It should be noted that the waste discharge system and the waste discharge method of the packaging bag disclosed in the present application can be applied to or suitable for various packaging bag related products, such as paper bags, non-woven bags, plastic bags, paper boxes, etc. The application of the waste discharge system and the waste discharge method of the present application is not limited to the application and use scenarios.
[0075] Next, the waste discharge system and the waste discharge method of the packaging bag disclosed in the present application will be explained and described in detail:
[0076] Embodiment 1
[0077] The embodiment of the present application discloses a waste discharge system of a packaging bag, which can be applied to a bag making machine of the packaging bag, and the waste discharge system comprises a waste discharge device and a detection and judgment device, and the waste discharge device and the detection and judgment device are communicatively connected, specifically, the waste discharge unit in the waste discharge device and the detection and judgment device are communicatively connected.
[0078] The waste discharge device comprises a first conveying roller group 100, a waste discharge unit 200 and a second conveying roller group 300 arranged in sequence along a conveying path of the packaging bag, wherein the first conveying roller group 100 and the second conveying roller group 300 are used to convey the packaging bag along the conveying path, and each of them comprises at least two conveying rollers; and the waste discharge unit 200 comprises a path switching assembly and a waste product collecting assembly, wherein the inlet of the path switching assembly is in communication with the outlet of the first conveying roller group 100, and the outlet of the path switching assembly is switchably in communication with the waste product collecting assembly or the inlet of the second conveying roller group 300.
[0079] Specifically, in the present embodiment, the first conveying roller group 100 and the second conveying roller group 300 are arranged at intervals along the conveying path, and each of the first conveying roller group 100 and the second conveying roller group 300 comprises at least two conveying rollers, both of which are closely attached and can rotate relative to each other to forwardly convey the packaging bag, and the two conveying roller groups have a conveying path for conveying the packaging bag. It should be noted that the waste discharge device disclosed in the present application comprises the first conveying roller group 100 and the second conveying roller group 300, and the first conveying roller group 100 and the second conveying roller group 300 can only convey the packaging bag after being folded and flattened, so the waste discharge device is arranged downstream of the bag folding device in the bag making machine, between the bag folding device and the bag arranging device, and performs waste discharge treatment on the waste packaging bag after folding before the packaging bag is conveyed to the bag arranging device. Because the packaging bag conveyed at this time is the packaging bag after being folded and flattened, it is more convenient to perform waste discharge treatment.
[0080] However, those skilled in the art should understand that the waste discharge device can also be arranged at other positions to discharge waste, for example, arranged between the forming device and the bag folding device of the packaging bag, because the forming device and the bag folding device have a three-dimensional bag conveying channel for conveying the formed three-dimensional packaging bag to the bag folding device. The waste discharge device arranged in the three-dimensional bag conveying channel can discharge waste from the three-dimensional packaging bag. At this time, the waste discharge device can be arranged as a waste discharge plate, a waste discharge mechanical claw, etc., to exclude the calibrated waste packaging bag.
[0081] More specifically, in the present embodiment, the path switching assembly can be various structures such as a regulating roller, a waste discharge flange plate, etc. that can switch or change the conveying path. The inlet of the path switching assembly is in communication with the outlet of the first conveying roller group 100. When the qualified packaging bag is normally conveyed, the outlet of the path switching assembly is in communication with the inlet of the second conveying roller group 300 and then conveyed along the conveying path to the bag arranging device for bag arranging. When the packaging bag calibrated as waste is conveyed to the first conveying roller group 100, the inlet of the second conveying roller group 300 is cut off, the outlet of the path switching assembly is in communication with the inlet of the waste collecting assembly, so as to realize waste discharge treatment. That is, the outlet of the path switching assembly in the present application is switchably in one-way communication with the inlet of the waste collecting assembly or the second conveying roller group 300.
[0082] The detection and judgment device includes an information detection unit and an information processing unit, wherein the information detection unit includes a detection member 500 arranged upstream of the waste discharge device along the conveying path. The detection member 500 detects the detection information of each packaging bag on the conveying path in real time one by one. The detection information includes the appearance information of the handle part of the packaging bag and the appearance information of the side edge sealing part, and the detection information of each packaging bag is transmitted to the information processing unit. The information processing unit includes a judgment module 600 and a calibration module 700. The judgment module 600 judges whether the packaging bag is a waste packaging bag according to the detection information of each packaging bag. When the judgment module 600 judges that the packaging bag is a waste packaging bag, the calibration module 700 calibrates the waste packaging bag and transmits the calibration result to the control unit 800.
[0083] The control unit 800 controls the outlet of the path switching assembly to switch according to the calibration result. When the qualified packaging bag is conveyed to the waste discharge unit 200 along the conveying path, the outlet of the path switching assembly is in communication with the inlet of the second conveying roller group 300. When the packaging bag calibrated as waste is conveyed to the waste discharge unit 200 along the conveying path, the outlet of the path switching assembly is in communication with the waste collecting assembly.
[0084] Specifically, in the present embodiment, the detection member 500 can be any one of common detection instruments such as a camera, an infrared sensor, a radar, etc. Taking the camera as an example, the appearance image or video image of the packaging bag can be acquired. Taking the radar as an example, the appearance image of the packaging bag can also be acquired. Moreover, the detection member 500 disclosed in the present application detects at least the appearance information of the handle part and the appearance information of the side sealing part of the packaging bag, and therefore the detection member 500 can be preferably provided at least two to detect the appearance information of the handle part and the appearance information of the side sealing part of the packaging bag, respectively. Three detection members 500 can also be provided, for example, one detection member 500 is provided on each of the left and right sides of the packaging bag on the conveying path of the packaging bag to detect the appearance information of the two side sealing parts, and one detection member 500 is provided at the position corresponding to the handle part to detect the appearance information of the handle part. The person skilled in the art can set the specific number of detection members 500 according to the actual needs, for example, four, five or even more to improve the detection accuracy, which is not specifically limited in the present embodiment.
[0085] When the judging module 600 judges whether each packaging bag is a waste packaging bag according to the detection information of the packaging bag, a color analysis method can be used for judgment, the attribute or state is judged based on the color difference in the image of the packaging bag; a shape analysis method can also be used for judgment, the shape contour in the image of the packaging bag is recognized to judge whether it meets the standard of qualified products; a feature analysis method can also be used for judgment, the specific features (such as side lines, handbags) of the objects in the image of the packaging bag are analyzed to judge the state to determine whether it is a waste packaging bag, or a machine learning method can be used for judgment, a machine learning algorithm is used to train a large number of labeled packaging bag image data, so that the model can learn the feature difference between qualified products and waste products. The person skilled in the art can also set other methods or comprehensively use two or more methods in combination to judge whether it is a waste packaging bag, which is not specifically limited in the present embodiment.
[0086] In summary, the present application discloses a waste removal system applied to a packaging bag making machine, which comprises a waste removal device and a detection and judgment device. The detection and judgment device detects and judges whether each packaging bag produced is a waste packaging bag in real time, and sends corresponding calibration information to the waste removal device if it is a waste packaging bag. The waste removal device removes the waste packaging bag, and the qualified packaging bag is normally conveyed, arranged, packed, etc. to ensure that only qualified packaging bags are arranged in the bag arranging device. The waste removal system of the packaging bag disclosed in the present application can ensure that only products (qualified packaging bags) meeting the quality standards enter the market, which helps to improve the consistency and reliability of the produced packaging bags.
[0087] Further, the waste discharge system of the packaging bag disclosed in the application can be automatically detected by the detection and judgment device, and the waste discharge device and the detection and judgment device are in communication connection, the whole system is highly intelligent and automated, solves the problem that the packaging bag making machine in the prior art cannot be detected and the waste is discharged, and only the waste can be discharged by manual selection or detection, and has the advantages of high efficiency and high automation.
[0088] Further, in the waste discharge system disclosed in the application, the waste discharge unit 200 is arranged between the first conveying roller group 100 and the second conveying roller group 300 of the conveying path of the packaging bag, the qualified packaging bags are normally conveyed and transferred between the first conveying roller group 100 and the second conveying roller group 300, and only when the waste packaging bag passes through, the path switching assembly on the waste discharge unit 200 is switched to make the outlet and the waste collection assembly communicate to discharge and collect the waste packaging bag.
[0089] Further, the embodiment of the application further discloses a waste discharge system of a packaging bag, the waste discharge unit 200 comprises a control unit 800, and the path switching assembly comprises a waste discharge driving part and a waste discharge stop part, the waste collection assembly comprises a waste conveying belt 400 located at the outlet of the waste discharge stop part, the control unit 800 is in communication connection with the detection and judgment device and controls the waste discharge driving part to act according to the calibration result, the waste discharge driving part can drive the waste discharge stop part to reciprocate towards the conveying path, wherein when the packaging bag calibrated as the waste packaging bag is conveyed along the conveying path to the path switching assembly, the waste discharge driving part drives the waste discharge stop part to move towards the conveying path, and the outlet of the waste discharge stop part is in communication with the inlet of the waste conveying belt 400.
[0090] Specifically, in the embodiment, the control unit 800 can be a single-chip microcomputer, a PLC controller, a control chip or the like, the waste discharge driving part can be arranged as a waste discharge motor and a screw mechanism, or a waste discharge motor and a gear rack, or a waste discharge motor and a cam mechanism, or a waste discharge motor and a crank slider mechanism, for example, when arranged as a waste discharge motor and a screw mechanism, the transmission screw and the waste discharge motor are in transmission connection, the screw block and the waste discharge stop part are fixedly connected, when the driving motor drives the transmission screw to reciprocate, the screw block can drive the waste discharge stop part to reciprocate along the length direction of the transmission screw, so as to realize the reciprocating movement of the waste discharge stop part towards the conveying path, and further switch between the cut-off conveying path and the exit conveying path, when the packaging bag calibrated as the waste packaging bag is conveyed along the conveying path to the path switching assembly, the driving motor drives the transmission screw to rotate and drives the screw block to move, the screw block drives the waste discharge stop part to move towards the conveying path and cut off the conveying path, so that the outlet of the waste discharge stop part is in communication with the inlet of the waste conveying belt 400 and the waste is discharged, and it can be understood that the reciprocating rotation of the driving motor and other structures is converted into the linear movement of the waste discharge stop part.
[0091] In another preferred implementation, the waste discharge driving component can also be directly provided as a linear driving member, such as a linear motor and an output rod, a driving cylinder and an output rod, etc. The waste discharge blocking component can be driven by the linear driving member to realize linear reciprocating movement, which is not limited in the embodiment.
[0092] With the structure, the control unit 800 can control the waste discharge driving component to act according to the calibration result of the waste packaging bag transmitted by the calibration module 700, and realize the waste packaging bag to the waste collection assembly. The waste discharge system is arranged on the transmission path of the packaging bag, and can be realized by changing the path when discharging waste, without the need to additionally arrange a grabbing mechanism for the waste packaging bag, and has the advantage of simple structure.
[0093] Further referring to FIG. 1, in one preferred implementation of the embodiment, the first conveying roller group 100 and the second conveying roller group 300 are arranged at intervals along the transmission path. The waste discharge unit 200 is arranged between the intervals of the first conveying roller group 100 and the second conveying roller group 300.
[0094] Referring to FIG. 2, the waste discharge driving component includes a driving motor 210, an eccentric wheel mechanism 220, and a transmission connecting rod 230. The eccentric wheel mechanism 220 is in transmission connection with the output end of the driving motor 210. One end of the transmission connecting rod 230 is in rotational connection with the eccentric wheel mechanism 220, and the other end is in rotatable connection with the waste discharge blocking component. The waste discharge blocking component includes a waste discharge blocking plate 240, which is arranged obliquely.
[0095] Specifically, in the embodiment, a plurality of lightening holes are arranged at intervals on the eccentric wheel mechanism 220. With this structure, the material and weight of the eccentric wheel mechanism 220 can be reduced. Further, when the driving motor 210 rotates and drives the eccentric wheel mechanism 220 to rotate by half a circle, the eccentric wheel mechanism 220 can drive the transmission connecting rod 230 to move forward, and the transmission connecting rod 230 drives the waste discharge blocking plate 240 to move towards the transmission path and cut off the moving path. When the driving motor 210 continues to drive the eccentric wheel mechanism 220 to rotate by half a circle, the eccentric wheel mechanism 220 can drive the transmission connecting rod 230 to move backward, and the transmission connecting rod 230 drives the waste discharge blocking plate 240 to move away from the transmission path and retreat, so that the packaging bag can move from the first conveying roller group 100 towards the entrance of the second conveying roller group 300.
[0096] Therefore, the application sets the eccentric wheel mechanism 220, when the driving motor 210 drives the eccentric wheel mechanism 220 to rotate, the transmission connecting rod 230 and the waste discharge stop plate 240 can reciprocate and switch between the retracted state and the stop state, the driving motor 210 can normally rotate in the same direction, and the driving motor 210 does not need to switch reciprocating rotation, and the eccentric wheel mechanism 220 can also be intermittently reciprocated, and the rotation speed of the motor can be controlled to adjust the intermittent swinging time.
[0097] Further, when the waste discharge stop plate 240 is in the stop state, the waste discharge stop plate 240 is located in the transmission path and blocks the transmission path, and when the waste packaging bag is transmitted from the outlet of the first conveying roller group 100, the packaging bag is blocked by the waste discharge stop plate 240 and changes direction when it moves to the waste discharge stop plate 240, and the waste packaging bag moves towards the inlet of the waste collection assembly, so the waste discharge stop plate 240 is inclined in the embodiment, and the angle between the waste discharge stop plate 240 and the horizontal direction is preferably 60°-80°, for example, 60°, 75°, 80°, etc., when the waste packaging bag contacts the waste discharge stop plate 240, the inclined waste discharge stop plate 240 plays a guiding role and guides the waste packaging bag to move downward and be excluded.
[0098] The waste discharge unit 200 further comprises a mounting seat 250, the mounting seat 250 is arranged on the rack, the driving motor 210 is fixedly arranged on one side of the mounting seat 250, the mounting seat 250 is provided with a guide rail 260, and the waste discharge stop plate 240 is provided with a movable block 270 which is matched with the guide rail 260 and can move, and the guide rail 260 and the movable block 270 can improve the stability of the waste discharge stop plate 240 when moving.
[0099] The waste discharge stop plate 240 can switch between the retracted state and the stop state, when the waste discharge stop plate 240 is in the retracted state, the waste discharge stop plate 240 is located on one side of the transmission path, and the outlet of the waste discharge unit 200 is communicated with the inlet of the second conveying roller group 300.
[0100] When the waste discharge stop plate 240 is in the stop state, the waste discharge stop plate 240 is located in the transmission path, and the outlet of the waste discharge unit 200 is communicated with the inlet of the waste collection assembly.
[0101] When the waste packaging bag is transmitted to the first conveying roller group 100, the driving motor 210 controls the eccentric wheel mechanism 220 to rotate half a circle, so that the waste blocking baffle 240 is inserted into the gap between the first conveying roller group 100 and the second conveying roller group 300 to block the transmission path of the packaging bag. At this time, the waste packaging bag is blocked by the waste blocking baffle 240 and changes the path and then falls on the waste conveying belt 400 below. When the waste is finished, the driving motor 210 controls the eccentric wheel mechanism 220 to continue to rotate half a circle, and the transmission connecting rod 230 drives the waste blocking baffle 240 to reset to the retracted state. It has the advantages of simple and compact structure, high transmission efficiency, smooth movement and accurate control. And the inclined arrangement of the waste blocking baffle 240 can provide a guiding effect for the waste packaging bag, which is more conducive to the exclusion of the waste packaging bag.
[0102] More specifically, please refer to Figure 1, the setting structure and transmission mode of the first conveying roller group 100 and the second conveying roller group 300 in the embodiment are simply explained:
[0103] The first conveying roller group 100 includes a first driving conveying roller 110 and a first driven conveying roller 120, and the second conveying roller group 300 includes a second driving conveying roller 310 and a second driven conveying roller 320. The first driving conveying roller 110 is located below the first driven conveying roller 120, and the second driving conveying roller 310 is located below the second driven conveying roller 320. The first driving conveying roller 110 and the first driven conveying roller 120, and the second driving conveying roller 310 and the second driven conveying roller 320 all have a channel for conveying the packaging bag. A driving assembly is arranged on the side of the first conveying roller group 100 and the second conveying roller group 300. The driving assembly includes a driving roller motor 130, a conveying gear 140 and a conveying belt 150. The driving roller motor 130 drives the conveying gear 140 to rotate. The conveying belt 150 is wound around the conveying gear 140, the first driving conveying roller 110, the first driven conveying roller 120, the second driving conveying roller 310 and the second driven conveying roller 320 in turn. The transmission direction of the conveying belt 150 on the first driving conveying roller 110 and the first driven conveying roller 120, and the second driving conveying roller 310 and the second driven conveying roller 320 is opposite, so that the rotation of the corresponding two transmission rollers is opposite and opposite, and the packaging bag is conveyed.
[0104] Further referring to FIG. 1 and FIG. 3, the waste collecting assembly comprises a waste conveying belt 400 arranged below the waste discharging device, and a waste discharging conveying motor 410 is arranged on one side of the waste conveying belt 400. When the waste packaging bag is discharged from the conveying path to the waste conveying belt 400, the waste discharging conveying motor 410 drives the waste conveying belt 400 to convey and transmit the waste packaging bag to the waste area. A motor for driving the waste conveying belt 400 is further arranged on one side of the waste conveying belt 400. The conveying direction of the waste conveying belt 400 is perpendicular to the conveying direction of the packaging bag, and conveying belt baffles 420 are further arranged on both sides of the length direction of the waste conveying belt 400.
[0105] Alternatively, in another preferred implementation, the waste collecting assembly comprises a waste collecting plate and a waste collecting box. The waste collecting plate is arranged below the path switching assembly and communicates with the outlet of the path switching assembly. The waste collecting plate is arranged obliquely, and the outlet of the waste collecting plate communicates with the waste collecting box.
[0106] With the above structure, the waste conveying belt 400 can convey the discharged waste packaging bag to the waste area, and the waste collecting plate can transfer the discharged waste packaging bag to the waste collecting box.
[0107] Next, the detection member 500 disclosed in the embodiment will be described in detail. The detection member 500 can be a radar, a camera, a sensor, etc. The detection member 500 comprises a first detector and a second detector arranged upstream of the waste discharging device.
[0108] The first detector comprises a first camera 510 arranged on the opening side of the packaging bag along the conveying path of the packaging bag. The first camera 510 detects the appearance image of the handle part of each packaging bag on the conveying path in real time.
[0109] The second detector comprises a second camera 520 arranged on both side portions of the packaging bag along the conveying path of the packaging bag. The second camera 520 detects the appearance image of the side sealing part of each packaging bag on the conveying path in real time.
[0110] With this structure, the detection member 500 is arranged as the first camera 510 and the second camera 520, and respectively detects the appearance image of the handle part and the side sealing part of each packaging bag on the conveying path in real time. The waste packaging bag can be detected and found in time.
[0111] The embodiment of the present application also discloses a waste packaging bag system, as shown in FIG. 4, the judging module 600 first judges the appearance image of the handle part detected by the first camera 510 and the appearance image of the handle part of the preset qualified product, when the difference between the appearance image of the handle part and the appearance image of the handle part of the qualified product is greater than the preset value, the judging module 600 judges that the packaging bag is a waste packaging bag and transmits the calibration result to the control unit 800 through the calibration module 700.
[0112] Alternatively, the judging module 600 judges the appearance image of the side sealing part detected by the second camera 520 and the appearance image of the side sealing part of the preset qualified product, when the difference between the appearance image of the side sealing part and the appearance image of the side sealing part of the qualified product is greater than the preset value, the judging module 600 judges that the packaging bag is a waste packaging bag and transmits the calibration result to the control unit 800 through the calibration module 700, and the control unit 800 controls the waste removal unit 200 to perform waste removal processing.
[0113] Specifically, in the present embodiment, when the judging module 600 judges the appearance image of the side sealing part detected by the second camera 520 and the appearance image of the side sealing part of the preset qualified product, various different judgment analysis methods can be used, for example:
[0114] The shape analysis method can be used for judgment, and when the shape analysis method is used for judgment, the solid contour analysis method can be used, and the three-dimensional contour information of the packaging bag image is analyzed and processed to judge, for example, the appearance image of the side sealing part and the appearance image of the handle part are first processed by denoising, filtering and the like to improve the data quality, and then the edges of the appearance image of the side sealing part and the appearance image of the handle part are detected and the contour is tracked, wherein the scanning or modeling method can be used for processing, when it is judged that the packaging bag to be measured has obvious errors, for example, there is no handbag, or the side sealing line is broken, it is judged as a waste packaging bag.
[0115] The machine learning method can also be used for judgment, and a large number of labeled packaging bag image data are trained by using the machine learning algorithm, so that the model can learn the feature difference between the qualified product and the waste product, and the machine learning method and the shape analysis method can also be combined, or the machine learning method and the feature analysis method can be combined for judgment, and the present embodiment does not make specific limitation.
[0116] With the design of the scheme, when judging whether the packaging bag is a waste packaging bag, only the appearance image of each packaging bag and the appearance image of the preset qualified product are compared and analyzed. When the difference after analysis and comparison is greater than the preset value, the waste packaging bag is judged and the calibration result is transmitted to the control unit 800. Further, the handle part and the side sealing part with the highest probability of waste are focused on. After the waste appears, the calibration result is transmitted to the waste removal device for waste removal.
[0117] Finally, the working process of the waste removal system of the packaging bag disclosed in the embodiment on the bag making machine is simply explained.
[0118] For example, when the bag making machine produces and manufactures packaging bags, the production and manufacturing speed of the packaging bags is certain. Taking the bag making machine producing 60 packaging bags per minute as an example for illustration:
[0119] After the raw material of the packaging bag is transported into the bag making machine, it is cut into a rectangular sheet with a corresponding size and length, and then the handle is sealed on the sheet. The first camera 510 for detecting the appearance image of the handle part is arranged downstream of the handle sealing area, and the second camera 520 for detecting the appearance image of the side sealing part is arranged downstream of the sealing part area. The three-dimensional packaging bag after forming is further transmitted to the bag folding device. The bag folding device folds and flattens the three-dimensional packaging bag to facilitate subsequent arrangement and packaging and transportation. After passing through the bag folding device, the qualified packaging bag continues to be transmitted to the bag arranging device for arrangement and then is packaged by the packaging machine, while the waste packaging bag is removed by the waste removal device.
[0120] Because the bag making machine produces multiple packaging bags in a production line inside the machine in a production process in a pipeline manner, the detection and judgment device detects and judges whether each packaging bag produced is a waste packaging bag in real time. Specifically, for example, after the first packaging bag is produced, the first camera 510 for detecting the appearance image of the handle part and the second camera 520 for detecting the appearance image of the side sealing part start detecting, the appearance image is detected and it is judged whether it is a qualified product, then the second packaging bag is produced, it is judged to be a qualified product, the third packaging bag is produced, it is judged to be a qualified product, the fourth packaging bag is produced, it is judged to be a qualified product, when the fifth packaging bag is detected as a waste packaging bag, for example, when the first camera 510 for detecting the appearance image of the handle part detects the corresponding image and transmits it to the judgment module 600, the judgment module 600 judges that there is no handle sealed, and marks the packaging bag as a waste packaging bag. At this time, the waste packaging bag is upstream of the waste discharge device, and there are multiple packaging bags between the waste packaging bag and the waste discharge device, for example, there are 4 packaging bags between the position of the waste packaging bag and the waste discharge device at this time, and the marking module 700 marks the waste packaging bag as the fifth packaging bag. When the fifth packaging bag is transmitted to the waste discharge device, the outlet of the path switching assembly is communicated with the waste collection assembly, and the waste packaging bag is discharged. The packaging bags on the pipeline and the transmission path of the bag making machine are normally produced or conveyed.
[0121] The embodiment also discloses a waste packaging bag discharge method, which is applied to the waste packaging bag discharge system.
[0122] The detection member 500 acquires normal appearance images of the side sealing part and the handle part of the packaging bag respectively, and trains the model. The input information of the trained model is the normal appearance image collected by the detection member 500 in advance, and the output information of the trained model is the image after denoising and optimization of the collected normal appearance image.
[0123] Specifically, in the present embodiment, when the detection member 500 acquires normal appearance images for the side seal part and the handle part of the packaging bag, it is preferable to acquire images for multiple packaging bags at one time, for example, appearance images for 10, 20, 30 packaging bags at one time, for example, 20 qualified packaging bags are collected in advance, and pictures under different angles and lighting conditions are collected as much as possible to increase the diversity of the data set. Ensure that the picture is clear so that the model can accurately identify the features of the packaging bag. Then all the pictures are cropped to the same size and the resolution is adjusted to fit the model, and the number of pictures is increased by using methods such as flipping, rotating, scaling, color adjustment, etc. to improve the generalization ability of the model. When denoising the appearance photos, various commonly used denoising methods such as median filter denoising and Gaussian filter denoising can be used, and those skilled in the art can select according to actual needs, which are not limited in the present embodiment.
[0124] The judging module 600 extracts features from the images of the side seal part and the handle part of the packaging bag, extracts the positions of the side seal line and the handle of the qualified packaging bag, fits the positions as a multi-point curve, and uses it as a calibration curve.
[0125] Specifically, in the present embodiment, when the detection member 500 acquires normal appearance images for the side seal part and the handle part of the packaging bag, it is preferable to acquire images for multiple packaging bags at one time, for example, appearance images for 10, 20, 30 packaging bags at one time, for example, 20 qualified packaging bags are collected in advance, and pictures under different angles and lighting conditions are collected as much as possible to increase the diversity of the data set. Ensure that the picture is clear so that the model can accurately identify the features of the packaging bag. Then all the pictures are cropped to the same size and the resolution is adjusted to fit the model, and the number of pictures is increased by using methods such as flipping, rotating, scaling, color adjustment, etc. to improve the generalization ability of the model. When denoising the appearance photos, various commonly used denoising methods such as median filter denoising and Gaussian filter denoising can be used, and those skilled in the art can select according to actual needs, which are not limited in the present embodiment.
[0126] Further, when feature extraction is performed on the images of the side seal part and the handle part of the packaging bag, the image is first enhanced, and the contrast, brightness, etc. of the image is adjusted to make the image features more prominent, facilitating subsequent processing. Then the image is standardized to ensure the consistency of the input data. Then different features such as color features, texture features, shape features, and key point features can be extracted, for example, the color histogram and color moment of the image are extracted to describe the global color distribution of the image, the texture features of the image are extracted using the gray level co-occurrence matrix (GLCM), local binary pattern (LBP), and gray difference statistics, the shape features such as straight lines and circles in the image are extracted through edge detection (such as Canny and Sobel edge detectors) and Hough transform, and then deep learning methods are used to extract the features, for example, a convolutional neural network is used to automatically learn the multi-level feature representation of the image through multiple convolutional layers, pooling layers, and fully connected layers, which can extract low-level to high-level features such as edges, textures, shapes, and objects. After a large number of features are extracted, feature selection may be needed to select the most useful and representative feature subset. Feature selection can reduce the amount of calculation, improve the generalization ability of the model, and avoid overfitting.
[0127] Finally, when fitting the extracted multiple feature points into a curve, the least squares method can be used for fitting, such as linear fitting, circle fitting, ellipse fitting, etc., or polynomial fitting, curve difference fitting, etc., and more specifically, Python, Java, etc. programming languages can be used for programming processing, which is not limited in the embodiment.
[0128] The detection component 500 detects the appearance image of each packaging bag on the transmission path in real time, and transmits the appearance image of each packaging bag to the judgment module 600. The judgment module 600 extracts features from the images of the side seal part and the handle part of each packaging bag, extracts the positions of the side seal line and the handle of each packaging bag, and fits the positions of the packaging bag as a multi-point curve as a test curve.
[0129] The judgment module 600 judges the position difference between each point of the test curve and each point of the calibration curve, and the judgment module 600 sets a difference threshold and selects points in the test curve that are greater than the difference threshold.
[0130] The judgment module 600 judges whether the position difference of more than 3 consecutive points is greater than the difference threshold, and if so, the calibration module 700 calibrates the packaging bag as a waste packaging bag; or the judgment module 600 judges whether the position difference of more than 5 non-consecutive points is greater than the difference threshold, and if so, the calibration module 700 calibrates the packaging bag as a waste packaging bag.
[0131] It should be noted that in the present embodiment, the appearance image of the training model and the appearance image of the packaging bag to be tested preferably select the same perspective and appearance, and the number of feature points extracted from the appearance image of the training model and the appearance image of the packaging bag to be tested is the same, and the method of fitting multiple feature points into a curve is also the same. In this way, when the packaging bag to be tested is a qualified product, for example, the fitting curve of the handle part should be substantially coincident with the calibration curve or the difference is within a certain range. When a defective packaging bag appears, for example, there is no handle on the sealing part, the feature points of the curve corresponding to the handle part will change, or when there is a side sealing part without sealing, the feature points of the curve corresponding to the sealing edge will also change, so that the packaging bag can be accurately and quickly judged to be qualified or have a problem. And calibrate the defective packaging bag.
[0132] More specifically, in the present embodiment, the judging module 600 can also judge whether there are more than 3 consecutive points in the fitted curve, for example, 4, 5 or more consecutive points, and when the interval points are greater than the difference threshold, it can be 6, 7, 8 or even more. Further, the difference threshold can be set or take the distance between the feature point and the calibration curve, for example, the preset distance is 30, and when it is greater than 30, it is judged that the point and the point of the calibration curve are greater than the difference threshold. The person skilled in the art can adjust or design according to the actual demand, and the present embodiment does not make specific limitation.
[0133] If the above two conditions are not met, the confidence of the point as a fault point is calculated according to the distance between the corresponding two points and the interval of the two points. If the confidence is higher than 70, the packaging bag is judged to be a defective packaging bag. It should be noted that the person skilled in the art can also set the confidence to 65, 80 or other values, and the present embodiment does not make specific limitation.
[0134] The calibration module 700 calculates the number of packaging bags between the defective packaging bag and the waste discharge device on the transmission path as N, and calibrates the defective packaging bag as N+1.
[0135] Specifically, in the present embodiment, for example, when the number of packaging bags between the defective packaging bag and the waste discharge device on the transmission path is 5, the defective packaging bag is calibrated as 6, and when the 6th packaging bag is transmitted to the waste discharge device, the waste discharge treatment is performed. When the number of packaging bags between the defective packaging bag and the waste discharge device on the transmission path is 3, the defective packaging bag is calibrated as 4, and when the 4th packaging bag is transmitted to the waste discharge device, the waste discharge treatment is performed.
[0136] More specifically, it can also be counted from the production of the first packaging bag, and then count the second, third, fourth, fifth, until the Nth packaging bag, wherein when the Mth packaging bag is a waste packaging bag, the Mth packaging bag is marked and excluded, using this method, the total number of packaging bags can also be counted, and the packaging bag yield can be calculated.
[0137] The calibration module 700 transmits the calibration information of the waste packaging bag to the control unit 800, and when the waste packaging bag is transmitted along the transmission path to the waste discharge unit 200, the control unit 800 controls the waste discharge unit 200 to act, so that the outlet of the path switching assembly is in communication with the waste collection assembly, and the calibrated waste packaging bag is excluded.
[0138] The application provides a waste packaging method, which first establishes a training model by the judgment module 600 and optimizes the pre-collected normal appearance images, then extracts features from the images, and fits the extracted multiple feature points into a multi-point curve as a calibration curve, in the waste judgment process, the appearance images of each to-be-tested packaging bag are also extracted features and fitted into a multi-point curve as a to-be-tested curve, then the to-be-tested curve and the calibration curve are compared by judgment and analysis to determine whether it is a waste packaging bag, which has the advantages of high accuracy and high efficiency.
[0139] The embodiment of the application also discloses a waste packaging method, and the detection member 500 collects multiple images of a single to-be-tested packaging bag each time.
[0140] The detection member 500 collects X images of the side edge sealing part of a single to-be-tested packaging bag each time, the judgment module 600 extracts features from the X images of the side edge sealing part and obtains X side edge to-be-tested curves, and the X side edge to-be-tested curves are corrected to obtain side edge corrected to-be-tested curves.
[0141] The detection member 500 collects Y images of the handle part of a single to-be-tested packaging bag each time, the judgment module 600 extracts features from the Y images of the handle part and obtains Y handle to-be-tested curves, and the Y handle to-be-tested curves are corrected to obtain handle corrected to-be-tested curves.
[0142] Specifically, for example, the number of images of the side edge sealing part and the number of images of the handle part of each side of the single to-be-tested packaging bag can be the same or different, for example, the number of X can be 3, 4, 5, 6, etc., and the number of Y can be 4, 3, 5, 6, etc. Those skilled in the art can set it according to actual needs. It should be noted that X and Y are both set to positive integers greater than 2, so as to avoid the false judgment caused by image errors when only one image is detected. With this design scheme, the detection component 500 collects multiple images of a single to-be-tested packaging bag each time, and corrects multiple to-be-tested curves corresponding to the multiple images to obtain a corrected to-be-tested curve, thereby further improving the accuracy.
[0143] Further preferably, the information processing unit obtains a corrected to-be-tested curve formula for X images of the side edge part as follows:
[0144] The information processing unit obtains a corrected to-be-tested curve formula for Y images of the handle part as follows:
[0145] It should be noted that, represents the correction processing of X images of the side edge part, wherein is one of the formulas for fitting the to-be-tested curve by using the least square method, n1+…+n x is an average calculation of X deviation values, for example, when 4 images of the side edge part are corrected, the corrected deviation value should be That is, the deviation values of the 4 images are averaged to reduce errors, represents the correction of Y images of the handle part, wherein n1+…+n y is an average calculation of Y deviation values, for example, when 5 images of the handle part are corrected, the corrected deviation value should be That is, the deviation values of the 5 images or the 5 to-be-tested curves are averaged to reduce errors, thereby avoiding the problem of large errors or deviation values when detecting a single image.
[0146] The embodiment of the present application also discloses a packaging bag waste discharge method. The detection component 500 further comprises infrared emitters and infrared receivers arranged on both sides of the packaging bag. Please refer to FIG. 6. The infrared emitters emit infrared rays, and the infrared receivers receive the infrared rays and send the infrared ray values to the judgment module 600.
[0147] The judgment module 600 compares the received infrared ray values with a preset threshold value:
[0148] If the deviation of the infrared value from the preset threshold value is ±10, it is determined that the packaging bag has no hole. For example, when the deviation of the infrared value from the preset threshold value is 8 or -7, it is determined that the packaging bag has no hole.
[0149] If the deviation of the infrared value from the preset threshold value is ±10 to ±20, it is determined that the packaging bag may have a hole. For example, when the deviation of the infrared value from the preset threshold value is 15 or -17, it is determined that the packaging bag may have a hole, and further processing and determination by the color threshold algorithm are required.
[0150] If the deviation of the infrared value from the preset threshold value is greater than ±20, it is determined that the packaging bag has a hole, and it is determined that the packaging bag is a waste packaging bag. For example, when the deviation of the infrared value from the preset threshold value is 30 or -45, it is determined that the packaging bag has a hole, and it is marked as a waste packaging bag.
[0151] When it is determined that the packaging bag may have a hole, the image data of the packaging bag is collected by the camera, and the image data is processed by the color threshold algorithm. The RGB color threshold of the waste packaging bag is preset to 100. If the RGB of the packaging bag is greater than 100, it is determined to be a waste packaging bag. It should be noted that there are 256 color levels for RGB. For example, when the RGB of the packaging bag is 50 or 60, it is determined to be a qualified packaging bag, and when the RGB is 160 or 200, it is determined to be a waste packaging bag.
[0152] By using the above technical solution, the infrared emitter and the infrared receiver can further detect whether there is a hole in the packaging bag. The packaging bag with a hole is also marked as a waste packaging bag, thereby improving the detection accuracy of the packaging bag.
[0153] In summary, the application discloses a waste removal system applied to a packaging bag making machine. The waste removal system comprises a waste removal device and a detection and judgment device. The detection and judgment device detects and judges whether each packaging bag produced is a waste packaging bag in real time. If it is a waste packaging bag, the corresponding marking information is sent to the waste removal device. Specifically, in the present application, a first camera 510 and a second camera 520 are arranged to detect the appearance images of the handle part and the side sealing part of each packaging bag on the transmission path in real time, respectively. Then, whether it is a waste packaging bag is determined by comparing the appearance images.
[0154] The determined waste packaging bag is discharged by the waste discharge device, and the qualified packaging bag is normally conveyed, arranged, packaged and the like. When the waste packaging bag passes through the waste discharge device, the path switching assembly on the waste discharge unit is switched to enable the outlet to communicate with the waste collection assembly to discharge and collect the waste packaging bag. The waste discharge system disclosed by the application can ensure that only products (qualified packaging bags) meeting the quality standards enter the market, and can help improve the consistency and reliability of the produced packaging bags. Moreover, the waste discharge system is arranged on the conveying path of the packaging bag, and can be realized by changing the path during waste discharge, without the need of additionally arranging a waste packaging bag grabbing mechanism, and has the advantage of simple structure.
[0155] Finally, the working process of the waste discharge system disclosed by the embodiment is described.
[0156] The raw material of the packaging bag is cut into a rectangular sheet of a corresponding size after being conveyed into the bag making machine, and then the handle is sealed on the sheet. The first camera 510 for detecting the appearance image of the handle part is arranged downstream of the handle sealing area, and the second camera 520 for detecting the appearance image of the side sealing part is arranged downstream of the sealing part area. The three-dimensional packaging bag after forming is further conveyed to the bag folding device, which folds and flattens the three-dimensional packaging bag to facilitate subsequent arrangement and packaging transportation. After passing through the bag folding device, the qualified packaging bag continues to be conveyed to the bag arranging device and is then packaged by the packaging machine, while the waste packaging bag is discharged by the waste discharge device.
[0157] Because the bag making machine produces multiple packaging bags in a production line in a production process, the detection and judgment device detects and judges whether each packaging bag produced is a waste packaging bag in real time. Specifically, for example, the first packaging bag is detected and judged. The images of the side sealing part and the handle part of the first packaging bag are extracted and fitted as a to-be-detected curve, and then are compared with the calibration curve of the qualified packaging bag. When it is judged that the packaging bag is not a waste packaging bag, the packaging bag is continuously conveyed. Then, the second packaging bag, the third packaging bag and the fourth packaging bag are detected. The qualified packaging bag is normally detected and transported, and is normally conveyed when passing through the waste discharge device. When the first camera 510 for detecting the appearance image of the handle part detects the image of the fifth packaging bag and transmits the image to the judgment module 600, it is judged that the fifth packaging bag has no handle sealed thereon, and the fifth packaging bag is marked as a waste packaging bag. At this time, the waste packaging bag is upstream of the waste discharge device, and four packaging bags are conveyed between the waste packaging bag and the waste discharge device. At this time, the marking module 700 marks the waste packaging bag as the fifth packaging bag. When the fifth packaging bag is conveyed to the waste discharge device, the outlet of the path switching assembly communicates with the waste collection assembly to discharge the waste packaging bag. The other packaging bags on the production line and the conveying path of the bag making machine are normally produced or conveyed.
[0158] Embodiment 2
[0159] The embodiment also discloses a waste discharge system of a packaging bag. It should be noted that the waste discharge system of the packaging bag disclosed in the embodiment is different from that in Embodiment 1 only in the structure and arrangement of the path switching assembly, and the other structures and waste discharge methods are the same as those in Embodiment 1. Therefore, the other structures and waste discharge methods will not be described again, and only the path switching assembly will be described in detail in the embodiment.
[0160] Specifically, the path switching assembly in the embodiment comprises an adjustable waste discharge roller group arranged between the first conveying roller group and the second conveying roller group. It should be noted that the distance between the adjustable waste discharge roller group arranged between the first conveying roller group and the second conveying roller group is at least greater than the length of the packaging bag, and preferably the first conveying roller group and the second conveying roller group are arranged in a movable and adjustable manner. For example, when the length of the packaging bag is 40 cm, the distance between the first conveying roller group and the second conveying roller group is set to 45 cm, 50 cm, etc.
[0161] The adjustable waste discharge roller group comprises a fixed rotating roller and an adjustable rotating roller, and the fixed rotating roller and the adjustable rotating roller have a transmission path for the packaging bag to pass through. An adjusting driving mechanism is arranged on one side of the adjustable rotating roller.
[0162] The adjusting driving mechanism is in transmission connection with the adjustable rotating roller, and the adjusting driving mechanism can drive the adjustable rotating roller to move away from the side of the fixed rotating roller, so as to switch the adjustable waste discharge roller group between the conveying state and the interruption state.
[0163] When the adjustable rotating roller is in the conveying state, the packaging bag passes through the adjustable waste discharge roller group from the first conveying roller group, and the outlet of the adjustable waste discharge roller group is in communication with the inlet of the second conveying roller group. In the conveying state, the packaging bag passes through the first conveying roller group, the adjustable waste discharge roller group and the second conveying roller group in sequence and then continues to be conveyed.
[0164] When the adjustable rotating roller is in the interruption state, the adjustable rotating roller is separated from the fixed rotating roller and located away from the side of the fixed rotating roller. The outlet of the adjustable waste discharge roller group is in communication with the waste collection assembly. The packaging bag passes through the first conveying roller group and the adjustable waste discharge roller group in sequence and then enters the waste collection assembly.
[0165] With the structure, the path switching assembly is arranged between the first conveying roller group and the second conveying roller group. When the qualified packaging bags are conveyed, the qualified packaging bags pass through the first conveying roller group, the adjustable waste removal roller group and the second conveying roller group in sequence and continue to be conveyed. When the waste packaging bags are conveyed, the adjustable rotating rollers in the adjustable waste removal roller group move to the side away from the fixed rotating rollers and interrupt the conveying path. At this time, the waste packaging bags are interrupted by the first conveying roller group path and are conveyed to the waste collecting assembly, so that the waste packaging bag is removed. The adjustable waste removal roller group has the advantages of wide adaptability and high flexibility. For example, when the packaging bag is adjusted, the structure of the waste removal device does not need to be replaced, and only the distance, speed or position of the adjustable waste removal roller group needs to be adjusted.
[0166] Further preferably, the adjusting driving mechanism comprises a driving motor and a swing transmission mechanism, one end of the swing transmission mechanism is rotationally connected with the driving motor, and the other end is transmissionally connected with the adjustable rotating roller. When the waste packaging bag is conveyed to the upstream of the waste removal unit along the conveying path, the control unit controls the driving motor to work, the driving motor drives the swing transmission mechanism to act and swing the adjustable rotating roller away from the fixed rotating roller, at this time, the adjustable rotating roller is in an interrupted state, the outlet of the adjustable waste removal roller group is communicated with the inlet of the second conveying roller group, and the packaging bag marked as the waste packaging bag is removed.
[0167] Specifically, in the embodiment, the swing transmission mechanism can be a swing connecting rod, a crank rocker mechanism, a cam (eccentric wheel) mechanism or the like. The swing transmission mechanism can convert the rotation of the driving motor into the swing of the swing transmission mechanism and drive the adjustable rotating roller to swing. When the adjustable rotating roller swings away from the fixed rotating roller, the adjustable rotating roller is located obliquely below the fixed rotating roller. At this time, when the waste packaging bag is conveyed to the first conveying roller group, because the adjustable waste removal roller group is in an interrupted state at this time, and the length of the packaging bag is less than the distance between the first conveying roller group and the second conveying roller group, the waste packaging bag is conveyed to the adjustable rotating roller and then to the waste collecting assembly.
[0168] The adjusting driving mechanism comprises a driving element and a linear transmission mechanism. One end of the linear transmission mechanism is transmissionally connected with the driving motor, and the other end is transmissionally connected with the adjustable rotating roller. When the waste packaging bag is conveyed to the upstream of the waste removal unit along the conveying path, the control unit controls the driving motor to work, the driving motor drives the linear transmission mechanism to act and moves the adjustable rotating roller away from the fixed rotating roller, at this time, the adjustable rotating roller is in an interrupted state, the outlet of the adjustable waste removal roller group is communicated with the inlet of the second conveying roller group, and the packaging bag marked as the waste packaging bag is removed.
[0169] Specifically, in the embodiment, the driving element can be a driving motor, or a driving cylinder, a linear motor, etc. For example, when the driving element is a driving motor, the linear transmission mechanism can be a conveyor belt mechanism, a gear and rack mechanism, a screw mechanism, etc. When the driving element is a driving cylinder, a linear motor, etc., the linear transmission mechanism can be a guide rail, a guide groove, etc. When the adjustable rotating roller moves towards the direction away from the fixed rotating roller, the adjustable rotating roller is directly below the fixed rotating roller. At this time, when the waste packaging bag is transmitted to the first conveying roller group, because the adjustable waste discharge roller group is in the interrupted state at this time, and the length of the packaging bag is less than the distance between the first conveying roller group and the second conveying roller group, at this time, the waste packaging bag will be transmitted to the adjustable rotating roller, and then transmitted to the waste collecting assembly.
[0170] It should be noted that other structures and waste discharge methods in the waste discharge system of the packaging bag disclosed in the embodiment are the same as those in Embodiment 1, and therefore, the embodiment will not be described again.
[0171] It should be noted that in addition to the specific embodiments of the application described above, other advantages and effects of the application can be easily understood by those skilled in the art from the disclosure. Although the description of the application is introduced in combination with the preferred embodiments, this does not mean that the features of the application are limited to the embodiments. On the contrary, the purpose of introducing the application in combination with the embodiments is to cover other options or modifications that can be extended based on the claims of the application. In order to provide a deep understanding of the application, many specific details are included in the above description, and the application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the application, some specific details will be omitted in the description. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.
[0172] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0173] In the description of the embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product is usually placed, which is only for the convenience of describing the application and simplifying the description, and therefore, cannot be understood as indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore, cannot be understood as limiting the application.
[0174] The terms "first", "second", etc. are only used for differentiation, and cannot be understood as indicating or implying relative importance.
[0175] In the description of the present embodiments, it also needs to be explained that, unless explicitly defined and limited otherwise, the terms "set", "connected", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiments can be understood according to the specific circumstances.
[0176] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood that the above description is a further explanation of the present application in connection with the specific embodiments, and the specific implementation of the present application should not be limited to these descriptions. Those skilled in the art can make various changes in form and details, including making a number of simple deductions or substitutions, without departing from the spirit and scope of the present application.
Claims
A waste discharge system for a packaging bag, characterized in that The waste discharge device and the detection and judgment device are communicatively connected The waste discharge device comprises a first conveying roller group, a waste discharge unit and a second conveying roller group arranged in sequence along a conveying path of the packaging bag, wherein the first conveying roller group and the second conveying roller group are used for conveying the packaging bag along the conveying path and each comprises at least two conveying rollers; and the waste discharge unit comprises a path switching assembly and a waste collection assembly, wherein an inlet of the path switching assembly is in communication with an outlet of the first conveying roller group, and an outlet of the path switching assembly is switchably in communication with the waste collection assembly or an inlet of the second conveying roller group. The detection and judgment device comprises an information detection unit and an information processing unit; wherein the information detection unit comprises a detection member arranged upstream of the waste discharge device along the conveying path, which detects detection information of each of the packaging bags on the conveying path in real time, the detection information comprising appearance information of a handle part and appearance information of a side edge sealing part of the packaging bag, and transmits the detection information of each of the packaging bags to the information processing unit; the information processing unit comprises a judgment module and a calibration module, the judgment module judges whether the packaging bag is a waste packaging bag according to the detection information of each of the packaging bags, and the calibration module calibrates the waste packaging bag and transmits a calibration result to a control unit when the judgment module judges that the packaging bag is the waste packaging bag. The control unit controls the outlet of the path switching assembly to switch according to the calibration result, the outlet of the path switching assembly is in communication with the inlet of the second conveying roller group when the qualified packaging bag is conveyed to the waste discharge unit along the conveying path, and the outlet of the path switching assembly is in communication with the waste collection assembly when the packaging bag calibrated as the waste packaging bag is conveyed to the waste discharge unit along the conveying path. The waste evacuation system of a packaging bag according to claim 1, wherein The waste discharge unit comprises the control unit, the path switching assembly comprises a waste discharge driving part and a waste discharge stop part, the waste collection assembly comprises a waste conveying belt at an outlet of the waste discharge stop part, the control unit is communicatively connected with the detection and judgment device and controls the waste discharge driving part to act according to the calibration result, and the waste discharge driving part can drive the waste discharge stop part to reciprocally move towards the conveying path. When the packaging bag calibrated as the waste packaging bag is conveyed to the path switching assembly along the conveying path, the waste discharge driving part drives the waste discharge stop part to move towards the conveying path, and the outlet of the waste discharge stop part is in communication with the inlet of the waste conveying belt. The first conveying roller group and the second conveying roller group are arranged at intervals along the conveying path. A waste evacuation system for a package as claimed in claim 2, wherein The waste discharge driving component comprises a driving motor, an eccentric wheel mechanism and a transmission connecting rod, the eccentric wheel mechanism is in transmission connection with an output end of the driving motor, one end of the transmission connecting rod is in rotation connection with the eccentric wheel mechanism, and the other end is in rotation connection with the waste discharge stop component; the waste discharge stop component comprises a waste discharge stop plate, and the waste discharge stop plate is arranged obliquely; Wherein The waste discharge unit further comprises a mounting seat, the mounting seat is arranged on the rack, the driving motor is fixedly arranged on one side of the mounting seat, a guide rail is arranged on the mounting seat, and a movable block that is adapted to the guide rail and is movable is arranged on the waste discharge stop plate; and The waste discharge stop plate can be switched between a retracted state and a stop state, when the waste discharge stop plate is in the retracted state, the waste discharge stop plate is located on one side of the transmission path, and the outlet of the waste discharge unit is in communication with the inlet of the second conveying roller group; When the waste discharge stop plate is in the stop state, the waste discharge stop plate is located in the transmission path, and the outlet of the waste discharge unit is in communication with the inlet of the waste collection assembly. The waste evacuation system of a packaging bag according to claim 1, wherein The path switching assembly comprises an adjustable waste discharge roller group arranged between the first conveying roller group and the second conveying roller group, wherein The adjustable waste discharge roller group comprises a fixed rotating roller and an adjustable rotating roller, and a transmission path for the packaging bag to pass through is formed between the fixed rotating roller and the adjustable rotating roller, and an adjusting driving mechanism is arranged on one side of the adjustable rotating roller; The adjusting driving mechanism is in transmission connection with the adjustable rotating roller, and the adjusting driving mechanism can drive the adjustable rotating roller to move away from the side of the fixed rotating roller, so that the adjustable waste discharge roller group is switched between a conveying state and an interruption state; Wherein When the adjustable rotating roller is in the conveying state, the packaging bag passes through the adjustable waste discharge roller group from the first conveying roller group, and the outlet of the adjustable waste discharge roller group is in communication with the inlet of the second conveying roller group; When the adjustable rotating roller is in the interruption state, the adjustable rotating roller is separated from the fixed rotating roller and located away from the side of the fixed rotating roller, and the outlet of the adjustable waste discharge roller group is in communication with the waste collection assembly. The waste discharge system of the packaging bag according to claim 4, characterized in that: The adjusting driving mechanism comprises a driving motor and a swing transmission mechanism, one end of the swing transmission mechanism is in rotation connection with the driving motor, and the other end is in transmission connection with the adjustable rotating roller, when the waste packaging bag is conveyed to the upstream of the waste discharge unit along the transmission path, the control unit controls the driving motor to work, the driving motor drives the swing transmission mechanism to act and drives the adjustable rotating roller to swing away from the side of the fixed rotating roller, at this time, the adjustable rotating roller is in the interruption state, the outlet of the adjustable waste discharge roller group is in communication with the inlet of the second conveying roller group, and the packaging bag that is marked as a waste packaging bag is excluded; or The adjusting driving mechanism comprises a driving element and a linear transmission mechanism, one end of the linear transmission mechanism is in transmission connection with the driving element, and the other end is in transmission connection with the adjustable rotating roller, when the waste packaging bag is conveyed along the conveying path to the upstream of the waste discharging unit, the control unit controls the driving element to work, the driving element drives the linear transmission mechanism to move and drives the adjustable rotating roller to move away from the fixed rotating roller, at this time, the adjustable rotating roller is in the interrupted state, and the outlet of the adjustable waste discharging roller group is in communication with the inlet of the second conveying roller group, and the packaging bag that is marked as a waste packaging bag is discharged. The waste discharge system of the packaging bag according to any one of claims 1 to 5, characterized in that, The waste collecting assembly comprises a waste conveying belt arranged below the waste discharging device, and a waste discharging conveying motor is arranged on one side of the waste conveying belt, when the waste packaging bag is discharged from the conveying path to the waste conveying belt, the waste discharging conveying motor drives the waste conveying belt to transmit and convey the waste packaging bag to a waste area; or The waste collecting assembly comprises a waste collecting plate and a waste collecting box, the waste collecting plate is arranged below the path switching assembly and is in communication with the outlet of the path switching assembly, the waste collecting plate is arranged obliquely, and the outlet of the waste collecting plate is in communication with the waste collecting box. A waste evacuation system for a package as claimed in claim 6, characterized in that The detection member comprises a first detector and a second detector arranged upstream of the waste discharging device; wherein The first detector comprises a first camera arranged on the opening side of the packaging bag along the conveying path of the packaging bag, and the first camera detects the appearance image of the handle part of each packaging bag on the conveying path in real time; The second detector comprises a second camera arranged on the two side parts of the packaging bag along the conveying path of the packaging bag, and the second camera detects the appearance image of the side sealing part of each packaging bag on the conveying path in real time. A waste evacuation system for a package as claimed in claim 7, wherein The judgment module analyzes the appearance image of the handle part detected by the first camera and the appearance image of the handle part of a preset qualified product, when the difference between the appearance image of the handle part and the appearance image of the handle part of the qualified product is greater than a preset value, the judgment module judges that the packaging bag is a waste packaging bag and transmits the marking result to the control unit; or The judgment module analyzes the appearance image of the side sealing part detected by the second camera and the appearance image of the side sealing part of a preset qualified product, when the difference between the appearance image of the side sealing part and the appearance image of the side sealing part of the qualified product is greater than a preset value, the judgment module judges that the packaging bag is a waste packaging bag and transmits the marking result to the control unit. A method of emptying a packaging bag, characterized in that The waste discharging method is applied to the packaging bag waste discharging system of any one of claims 1-8, and the waste discharging method comprises: The detection component respectively acquires normal appearance images of the side seal part and the handle part of the packaging bag, and trains a model, wherein the input information of the trained model is the normal appearance images collected by the detection component in advance, and the output information of the trained model is the images after denoising optimization of the collected normal appearance images; The judgment module extracts features of the images of the side seal part and the handle part of the packaging bag which is predetermined to be qualified, extracts the position features of the side seal line and the handle of the qualified packaging bag, fits the features as a multi-point curve, and takes the multi-point curve as a calibration curve; The detection component detects appearance images of each packaging bag to be tested on the transmission path in real time, and transmits the appearance images of the packaging bag to be tested to the judgment module, and the judgment module extracts features of the images of the side seal part and the handle part of the packaging bag to be tested, extracts the positions of the side seal line and the handle of the packaging bag to be tested, fits the positions of the packaging bag to be tested as a multi-point curve, and takes the multi-point curve as a to-be-tested curve; The judgment module judges the position difference of each point of the to-be-tested curve and each point of the calibration curve, sets a difference threshold, and screens out points in the to-be-tested curve which are greater than the difference threshold; The judgment module judges whether the position difference of more than three consecutive points is greater than the difference threshold, and if yes, the calibration module calibrates the packaging bag as a waste packaging bag; or The judgment module judges whether the position difference of more than five points which are not continuous is greater than the difference threshold, and if yes, the calibration module calibrates the packaging bag as a waste packaging bag; If neither of the above two conditions is met, the confidence degree of the point being a fault point is calculated according to the distance between the corresponding two points and the interval between the two points; If the confidence degree is higher than 70, the packaging bag is judged as a waste packaging bag; The calibration module calculates the number of packaging bags between the waste packaging bag and the waste discharge device on the transmission path as N, and calibrates the waste packaging bag as N+1; The calibration module transmits the calibration information of the waste packaging bag to the control unit, and when the waste packaging bag is transmitted to the waste discharge unit along the transmission path, the control unit controls the waste discharge unit to act, so that the outlet of the path switching assembly is in communication with the waste collection assembly, and the calibrated waste packaging bag is excluded. The method of evacuating a package according to claim 9, wherein The detection component collects multiple images of a single to-be-tested packaging bag each time; Wherein The detection component collects X images of the side seal part of a single to-be-tested packaging bag each time, the judgment module extracts features from the X images of the side seal part to obtain X side to-be-tested curves, and corrects the X side to-be-tested curves to obtain a side corrected to-be-tested curve; The detection component collects Y images of the handle part of a single to-be-tested packaging bag each time, the judgment module extracts features from the Y images of the handle part to obtain Y handle to-be-tested curves, and corrects the Y handle to-be-tested curves to obtain a handle corrected to-be-tested curve. The method of evacuating a package according to claim 10, wherein The detection component further comprises infrared emitters and infrared receivers arranged on both sides of the packaging bag, the infrared emitters emit infrared rays, the infrared receivers receive the infrared rays and send infrared ray values to the judgment module; The judgment module compares the received infrared ray values with a preset threshold value: If the deviation value of the infrared ray value and the preset threshold value is ±10, it is judged that the packaging bag has no hole; If the deviation value of the infrared ray value and the preset threshold value is ±10-±20, it is judged that the packaging bag may have a hole; If the deviation value of the infrared ray value and the preset threshold value is greater than ±20, it is judged that the packaging bag has a hole, and it is judged that the packaging bag is a waste packaging bag; When it is judged that the packaging bag may have a hole, the image data of the packaging bag is collected according to the camera, the image data is processed by using a color threshold algorithm, the RGB color threshold value of the waste packaging bag is preset as 100, and if the RGB of the packaging bag is greater than 100, it is judged that the packaging bag is a waste packaging bag.
Citation Information
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