A PVC raw material bag breakage separation device, system and method based on visual detection

Abstract

The application discloses a PVC raw material bag breakage separation device based on visual detection, a front section guide roller group is arranged between a material discharging roller and a floating tensioning mechanism, is used for limiting the going direction of the discharged raw material bag roll and regulating the material belt conveying path, and meanwhile, the going material resistance is shared; a visual detection mechanism is arranged above the main traction mechanism, realizes online image acquisition of the raw material bag roll in conveying in real time, and is used for detecting the appearance defects of the packaging bag; a sorting mechanism is arranged above the latter half of the material moving assembly, is used for receiving the defect signal of the visual detection mechanism, automatically separates the qualified packaging bag from the unqualified packaging bag with breakage and flaws, realizes the classification of good products and defective products, and removes the defective products. The application improves the consistency and accuracy of detection results, eliminates the production line efficiency bottleneck, stably controls the separation accuracy of good products and defective products, reduces the labor intensity, reduces the labor input, improves the production benefit, and improves the detection and cutting precision.

Description

Technical Field

[0001] This invention relates to a method for separating damaged raw material bags, and more specifically, to a device, system, and method for separating damaged PVC raw material bags based on visual detection. Background Technology

[0002] PVC raw material bags are commonly used packaging consumables in the packaging industry. During production, transportation and storage, they are prone to appearance defects such as breakage, cracks, missing materials, holes and deformation. If defective raw material bags are used directly, it will lead to problems such as insufficient packaging sealing, leakage of loaded materials and product contamination. This will not only affect the packaging quality and safety of use, but also cause production losses and increased costs. Therefore, it is necessary to conduct damage detection and separation of PVC raw material bags to effectively distinguish between good and defective products and ensure the stable operation of subsequent production processes.

[0003] Currently, the industry commonly uses manual methods to separate damaged PVC raw material bags. The specific operation process is as follows: First, the PVC raw material bag roll is released at a uniform speed by a feeding device. The operator holds the end of the roll and manually pulls the strip slowly, visually inspecting the surface of the strip section by section, focusing on defects such as damage, cracks, holes, and missing material. When a suspected defect is found, the operator stops feeding and repeatedly checks and confirms it at close range. After determining it to be a defective product, the defective area is manually cut off using scissors or a cutting tool. The remaining good strip is then placed separately from the cut-off defective product. After the entire roll of strip has been inspected, the good strip is manually sorted and stored, while the defective products are collected and disposed of centrally. The entire separation process relies entirely on the operator's visual observation and manual operation. This manual separation method has many insurmountable drawbacks in practical applications. First, the accuracy and stability of manual visual inspection are poor, and minute defects such as tiny cracks and small holes are easily detected. First, omissions can compromise the consistency and accuracy of test results, making it difficult to meet the quality control requirements of high-quality production. Second, manual operation is slow and inefficient, unable to match the high-speed conveying rhythm of automated production lines, becoming a bottleneck for the entire production line and failing to meet the needs of large-scale, continuous production. Third, manual separation relies on the subjective judgment of operators, and differences in testing standards among different personnel can easily lead to misjudgments and omissions, compromising the accuracy of separating good and defective products. Furthermore, prolonged visual inspection and manual cutting can cause visual fatigue and physical strain on operators, increasing labor costs and further reducing the stability of testing and separation. Finally, manual operation cannot precisely control the cutting range of defective areas, often resulting in over-cutting leading to waste of good product strips or under-cutting causing defective products to flow into the next process, increasing raw material loss, reducing production efficiency, and making it difficult to achieve efficient, accurate, and stable defect separation operations.

[0004] Therefore, those skilled in the art are dedicated to providing a visual inspection-based PVC raw material bag breakage separation device, system, and method that can effectively solve the above-mentioned technical problems. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides a PVC raw material bag damage separation device based on visual detection, comprising:

[0006] The front guide roller assembly is located between the unloading drum and the floating tensioning mechanism. It is used to limit the direction of the unloaded raw material bag roll and regulate the conveying path of the material belt; at the same time, it reduces the material flow resistance.

[0007] The floating tensioning mechanism, located behind the front guide roller group, is used to adaptively adjust the tension of the raw material bag strip by swinging the swing arm up and down; and to buffer the speed difference between unwinding and traction.

[0008] The main traction mechanism, located behind the floating tensioning mechanism, serves as the power output for feeding the entire machine.

[0009] The visual inspection unit, located above the main traction mechanism, performs real-time online image acquisition of the raw material bag rolls being conveyed, and is used to detect appearance defects of the packaging bags; appearance defects include damage, tears, missing material, holes, deformation, etc.

[0010] The intermediate guide roller group, located between the floating tensioning mechanism and the synchronous pressure roller traction mechanism, is used to regulate the conveying path of the material belt;

[0011] The synchronous pressure roller traction mechanism, located behind the vision inspection mechanism, is used to limit the raw material bag and drag the raw material bag forward.

[0012] The cutting mechanism, located behind the synchronous pressure roller traction mechanism, is used to cut the raw material bags;

[0013] The material transfer assembly, located at the rear of the cutting mechanism, is used to transport the cut raw material bags to the sorting mechanism.

[0014] The sorting mechanism, located above the rear half of the transfer assembly, receives defect signals from the visual inspection mechanism and automatically separates qualified packaging bags from damaged or defective unqualified packaging bags, thus achieving the classification and rejection of good and bad products.

[0015] Furthermore, the front guide roller assembly includes a guide roller frame;

[0016] The floating tensioning mechanism includes a tensioning frame. The upper half of the tensioning frame is sequentially equipped with a first tensioning roller, a second tensioning roller, a third tensioning roller, and a fourth tensioning roller from front to back. A positioning shaft is located in the lower half of the tensioning frame. Two rotating sleeves are rotatably mounted on the positioning shaft. The front end of each rotating sleeve is connected to a swing frame, which is equipped with a first swing roller and a second swing roller. An extension arm is located at the rear end of each rotating sleeve. The rear half of each extension arm is connected via a guide shaft. A guide sleeve slides on the guide shaft, and a guide post is mounted on the guide sleeve. The guide post slides through a power disc. The power disc and the guide post are eccentrically positioned. The power disc is connected to the output end of an output shaft. The output shaft passes through a support seat, which is mounted on a tensioning power source via a support frame. The tensioning power source is located in the lower half of the guide roller frame and connected to the input end of the output shaft, used to drive the power disc to rotate.

[0017] Furthermore, the main traction mechanism includes a main traction frame, with two mounting seats in the middle section of the main traction frame. The mounting seats are connected to each other by a main traction roller. A traction motor for driving the main traction roller to rotate is provided on the outer side of each mounting seat. Two driven traction wheels that cooperate with the main traction roller are provided above the main traction roller. Each driven traction wheel is detachably connected to the main traction frame through a positioning component.

[0018] Furthermore, the visual inspection mechanism includes an inspection frame mounted on a main traction frame. The front end of the inspection frame to the front end of the main traction frame forms a first inspection area, and the rear end of the inspection frame to the rear end of the main traction frame forms a second inspection area. A first inspection camera and a second inspection camera are respectively mounted on the front end and the rear end of the inspection frame. The mechanism also includes an annular shadowless light source assembly mounted at the visual inspection mechanism to provide uniform illumination for the first and second inspection cameras, eliminate reflections and shadows, and improve image acquisition clarity.

[0019] Furthermore, the middle section guide roller assembly includes a first guide roller, a second guide roller, a third guide roller, and a fourth guide roller arranged sequentially from front to back along the main traction frame; the first and second guide rollers are located in the front half of the main traction frame, the third and fourth guide rollers are located in the rear half of the main traction frame, and an extension frame is also provided at the rear end of the main traction frame, on which a fifth guide roller is provided.

[0020] Furthermore, the synchronous pressure wheel traction mechanism includes a rotating cylinder mounted on the operating table, a traction shaft on the rear side of the rotating cylinder, one end of the traction shaft being rotatably connected to the traction seat, and the other end being connected to the output end of the traction power source. Both the traction power source and the traction seat are mounted on the operating table, and several synchronous pressure wheels are sleeved on the traction shaft.

[0021] Furthermore, the cutting mechanism includes an installation cavity opened on one side of the operating table, a safety door is provided in the installation cavity, a base plate is provided in the installation cavity, at least two power cylinders are provided on the base plate, the output end of each power cylinder is connected to the lower end of the lower lifting seat, the two sides of the lower lifting seat are slidably sleeved on each first guide rod, the upper end of each first guide rod is connected to the operating table, the upper end of the lower lifting seat is provided with a cutting component, the upper end of the operating table is provided with an opening that passes through the installation cavity, a guide rail is provided at the opening, the cutting component can slide upward and is located at the opening, and both sides of the cutting component are provided with sliding grooves that cooperate with the guide rails;

[0022] Both sides of the lower lifting seat are connected to both sides of the upper lifting platform located above the operating table via connectors. The connectors include a first hinge arm, the lower end of which is hinged to the lower lifting seat. The upper half of the first hinge arm extends through a notch on the operating table to install a cavity, and its upper end is hinged to one side of a rotating component. The rotating component is rotatably connected to a cutting frame, which is mounted on the operating table. The other side of the rotating component is hinged to the lower end of a second hinge arm, and the upper end of the second hinge arm is hinged to the upper lifting platform. A lower cutting assembly is located below the upper lifting platform, and an upper cutting assembly is located at the lower end of the lower cutting assembly. Both sides of the upper lifting platform and the lower cutting assembly are respectively sleeved on each column. The upper end of each column is connected to the cutting frame, and the lower end of each column is connected to the operating table. A spring is sleeved on each column between the upper lifting platform and the lower cutting assembly.

[0023] Furthermore, the material transfer assembly includes a material transfer chamber opened on the operating table, and several material transfer conveyor belts are provided in the material transfer chamber. The material transfer conveyor belts are driven by a material transfer motor provided in the material transfer chamber.

[0024] The sorting mechanism includes a sorting rack located in the rear half of the material transfer chamber. The sorting rack is set on the operating table and a slide rail is set along the length of the sorting rack. The sorting rack is equipped with a good product feeding mechanism and a defective product rejection mechanism.

[0025] The good product unloading mechanism includes a rotatable lead screw mounted at the lower end of the sorting rack. The lead screw is driven by a sorting motor mounted on the outside of the sorting rack. A sorting seat is mounted on the lead screw, and the upper end of the sorting seat is slidably connected to the sorting rack via a slide rail. The lower end of the sorting seat is connected to the upper end of the first fixing member via several positioning pins. Second fixing members are mounted on both sides of the lower end of the first fixing member. The middle sections of the two second fixing members are connected by a reinforcing rod. A rotating rod is rotatably mounted through the lower half of each of the second fixing members. A rotary motor for driving the rotating rod is mounted on the outside of any of the second fixing members. Several inclined push rods are mounted on the rotating rod, and a push head is mounted at the lower end of each push rod. The defective product rejection mechanism has the same structure as the good product unloading mechanism.

[0026] The control panel is equipped with a feeding mechanism and a recycling mechanism on both sides.

[0027] The unloading mechanism includes several unloading conveyor mounting slots set on the operating table, several unloading conveyor belts set on the unloading frame, a pusher head between each pair of adjacent unloading conveyor belts, the feeding section of each unloading conveyor belt is located at each unloading conveyor mounting slot, and an unloading conveyor motor for driving the movement of the unloading conveyor belt is set on the unloading frame.

[0028] The recycling mechanism includes several recycling installation slots set on the operating platform. Each recycling installation slot is equipped with a recycling conveyor belt. The operating platform is equipped with a recycling motor to drive the operation of each recycling conveyor belt. A recycling bin is placed on one side of the operating platform.

[0029] A vision-based detection-based PVC raw material bag damage separation control system, the system includes:

[0030] The visual signal acquisition module is used to continuously acquire images of the conveyed raw material bag roll material through the first detection camera and the second detection camera in the first detection area and the second detection area respectively, to obtain original image signals of appearance defects including damage, cracks, missing material, holes and deformation, and to synchronously transmit the original image signals to the defect recognition and positioning module.

[0031] The defect identification and localization module is used to identify defects, determine defect types, and calibrate defect location coordinates on the received image signals, generate defect location pulse signals, defect length signals, and good / defective product classification signals, and transmit the above signals to the motion coordination control module in real time.

[0032] The motion coordination control module is used to receive various signals output by the defect identification and positioning module, and calculate and output traction speed adjustment commands, cutting trigger commands and sorting execution commands based on the preset mechanical distance from the detection area to the synchronous pressure roller traction mechanism and the cutting mechanism and the material belt conveying speed.

[0033] The traction control module is used to control the speed and running time of the traction power source of the synchronous pressure roller traction mechanism according to the traction speed adjustment command output by the motion coordination control module, and to adjust the material belt conveying distance and conveying sequence so that the defective position reaches the cutting station, or so that the defect-free material belt is conveyed at a uniform speed according to the standard packaging bag length.

[0034] The cutting execution control module is used to control the action sequence of the power cylinder of the cutting mechanism according to the cutting trigger command output by the motion coordination control module, so as to realize small-scale cutting of defective areas or continuous cutting of standard size of defect-free strips.

[0035] The sorting logic control module is used to send independent execution signals to the good product feeding mechanism and the defective product rejection mechanism respectively according to the sorting execution instructions output by the motion coordination control module, control the start, stop and rotation direction of the sorting motor and the rotary motor, and realize the automatic diversion of good products to the feeding mechanism and defective products to the recycling mechanism.

[0036] The continuous operation control module is used to output continuous operation commands to the traction control module and the cutting execution control module when no appearance defects are detected, so that the synchronous pressure roller traction mechanism maintains a constant conveying speed and the cutting mechanism cuts periodically according to the standard packaging bag size, thus maintaining continuous and stable production of the whole machine.

[0037] The real-time tension feedback module is used to collect tension data of the floating tensioning mechanism and adjust the speed of the tensioning power source in a closed loop to maintain tension stability.

[0038] A method for separating damaged PVC raw material bags based on visual detection, the method includes the following steps:

[0039] After the PVC raw material bag roll is released from the unloading drum, it first enters the front guide roller group for direction limiting and belt path regularization, while also distributing the material feeding resistance. The belt then enters the floating tensioning mechanism. The tensioning power source of the floating tensioning mechanism drives the output shaft to rotate, which in turn drives the power disk to rotate. The guide column slides through the power disk and is eccentrically positioned with it. The lower end of the guide column is connected to a guide sleeve, which slides on the guide shaft. When the power disk rotates, it causes the guide column to move eccentrically with it. The guide column drives the guide sleeve to slide on the guide shaft, which in turn causes the guide shaft to swing up and down. The swinging of the guide shaft causes the extension arm to swing, which in turn causes the rotating sleeve to rotate around the positioning shaft. The rotating sleeve causes the swing frame to swing synchronously, and the swing frame causes the first and second swing rollers to swing up and down. The belt sequentially passes over the first tension roller, the second swing roller, the second tension roller, the first swing roller, the third tension roller, and the fourth tension roller. The swing frame drives the first and second swing rollers to swing up and down, adaptively adjusting the belt tension and buffering the speed difference between unloading and traction.

[0040] After leaving the floating tensioning mechanism, the material belt enters the main traction mechanism. With the cooperation of the main traction roller and the driven traction wheel, the traction motor drives the entire machine to feed the material belt forward. The material belt passes through the middle guide roller group on the main traction frame, and then passes around the first guide roller, the second guide roller, the third guide roller, the fourth guide roller and the fifth guide roller on the extension frame, continuously straightening the conveying path. When the material belt is in the area above the main traction mechanism, the vision inspection mechanism starts working. The first inspection camera in the first inspection area and the second inspection camera in the second inspection area sequentially collect online images of the conveying material belt, and detect appearance defects such as surface damage, cracks, missing material, holes, and deformation. The collected image signals are synchronously transmitted to the control system to complete defect identification, location and good / defective product determination.

[0041] The inspected material strip enters the synchronous pressure roller traction mechanism. The traction power source drives the traction shaft to rotate the synchronous pressure roller. The synchronous pressure roller limits the material strip and drags it forward to the cutting mechanism station. The cutting mechanism receives instructions from the control system, and the power cylinder drives the lower lifting seat to move up and down. The lower lifting seat drives the upper lifting platform to move synchronously through the first hinge arm, rotating parts, and the second hinge arm, so that the upper cutting component and the lower cutting component move relative to each other to complete the material strip cutting. When a defect is detected, only a small area of ​​the defective area is cut; when there is no defect, it is continuously cut according to the standard packaging bag size. The cut raw material bag is transported to the sorting mechanism area by the material transfer conveyor belt of the material transfer component.

[0042] The sorting mechanism performs diversion actions based on visual inspection results. Good products are processed by the good product unloading mechanism. The sorting motor drives the lead screw to move the sorting seat, and the rotary motor drives the rotary rod to rotate the push rod and push head, pushing the good products to the unloading conveyor belt of the unloading mechanism and conveying them to the next process. Defective products are pushed to the recycling conveyor belt of the recycling mechanism with the same structural action by the defective product rejection mechanism, and finally fall into the recycling box for collection. In the whole process, the control system calculates and controls the timing of traction speed regulation, cutting triggering, and sorting execution based on the mechanical distance from the detection area to the synchronous pressure roller traction mechanism and the cutting mechanism and the material belt conveying speed, so as to realize the coordinated operation of the entire process of feeding, detection, cutting and sorting.

[0043] The present invention has the following beneficial effects:

[0044] 1. This invention uses dual cameras for online continuous image acquisition, combined with a defect identification and positioning module to automatically identify and coordinate appearance defects such as breakage, cracks, missing materials, holes, and deformation, replacing manual visual observation. It can reliably detect minute defects, eliminate manual missed detections and false detections, improve the consistency and accuracy of detection results, and meet the quality control requirements of high-quality production.

[0045] 2. This invention employs a front guide roller group, a floating tensioning mechanism, a main traction mechanism, and a synchronous pressure roller traction mechanism for coordinated feeding. Combined with online vision detection, automatic cutting, and automatic sorting, it operates continuously and automatically throughout the entire process. Conveying, detection, cutting, and sorting are carried out synchronously, which can match the cycle time of high-speed automated production lines, adapt to the needs of large-volume and continuous production, and eliminate production line efficiency bottlenecks.

[0046] 3. This solution uses a pre-set unified defect judgment rules and sorting logic in the control system. The defect location pulse signal, length signal and classification signal are used as the unified judgment basis. The entire process is executed by the system for judgment and sorting, which is not affected by the subjective judgment of personnel. The accuracy of separating good products and defective products is stable and controllable.

[0047] 4. This solution automates the entire process of feeding, testing, cutting, and sorting, eliminating the need for continuous visual inspection and manual cutting. This reduces labor intensity, minimizes manpower input, avoids decreased testing and separation stability due to fatigue, and maintains long-term stable operation of the equipment.

[0048] 5. The present invention uses a motion coordination control module to calculate the trigger timing based on the distance from the detection area to the cutting mechanism and the conveying speed, and controls the cutting mechanism to cut the defective area in a small range, while continuously cutting the defect-free strip according to the standard size. This precise control of the cutting range reduces material loss, avoids waste of good products and prevents defective products from flowing into the next process, and improves production efficiency.

[0049] 6. This solution adopts a floating tensioning mechanism that uses a swing arm to adaptively swing up and down to adjust the tension of the material belt, buffer the speed difference between unwinding and traction, and, together with the guide roller group, regularize the conveying path and distribute the material resistance, so that the material belt is conveyed smoothly, providing a stable acquisition environment for visual inspection and improving the accuracy of inspection and cutting.

[0050] 7. This invention achieves closed-loop coordinated operation of the entire machine through traction control, cutting execution, sorting logic and continuous operation module, which unifies and coordinates feeding speed, cutting sequence and sorting action. The equipment can operate continuously and stably for a long time and is suitable for production conditions of different specifications and speeds. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0052] Figure 2 This is a top view of the overall structure of the present invention.

[0053] Figure 3 This is a schematic diagram of the front guide roller assembly and the floating tensioning mechanism.

[0054] Figure 4 This is a schematic diagram of the formal structure of the front guide roller assembly and the floating tensioning mechanism.

[0055] Figure 5 This is a three-dimensional structural diagram of the front guide roller assembly and the floating tensioning mechanism.

[0056] Figure 6 This is a schematic diagram of the structure of a floating tensioning mechanism in which the tensioning power source, guide shaft, and swing roller work together.

[0057] Figure 7 This is a schematic diagram of the structure in which the power disc, guide column, and guide sleeve work together in a floating tensioning mechanism.

[0058] Figure 8 This is a structural diagram of the main traction mechanism and the vision inspection mechanism.

[0059] Figure 9 yes Figure 8 A magnified schematic diagram of the structure at point A in the middle.

[0060] Figure 10 This is a schematic diagram of the synchronous pressure roller traction mechanism and the cutting mechanism.

[0061] Figure 11 This is another three-dimensional structural diagram of the synchronous pressure roller traction mechanism and the cutting mechanism.

[0062] Figure 12 This is a structural diagram of the traction mechanism and cutting mechanism without the synchronous pressure rollers installed.

[0063] Figure 13 This is a schematic diagram of the material transfer assembly.

[0064] Figure 14 This is a schematic diagram of the cutting mechanism.

[0065] Figure 15 This is a schematic diagram of the connection structure of the base plate, the upper lifting platform, and the connecting parts in the cutting mechanism.

[0066] Figure 16 This is a schematic diagram of the structure of the sorting mechanism installed on the conveyor line.

[0067] Figure 17 yes Figure 16 A magnified schematic diagram of the structure at point B in the middle.

[0068] Figure 18 This is a bottom view structural diagram of the defective product rejection mechanism and the good product unloading mechanism in the sorting system.

[0069] Figure 19 This is a structural diagram of components such as the material sorting seat, positioning column, and first fixing component in the sorting mechanism. Detailed Implementation

[0070] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0071] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0072] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0073] like Figures 1 to 19 As shown, a PVC raw material bag damage separation device based on vision detection includes:

[0074] The front guide roller group 100 is set between the unloading drum and the floating tensioning mechanism 200. It is used to limit the direction of the unloaded raw material bag roll and regulate the conveying path of the material belt; at the same time, it distributes the material flow resistance.

[0075] The floating tensioning mechanism 200 is located on the rear side of the front guide roller group 100. It is used to adaptively adjust the tension of the raw material bag strip by swinging the swing arm up and down; and to buffer the speed difference between unwinding and traction.

[0076] The main traction mechanism 300 is located behind the floating tensioning mechanism 200 and serves as the power output end for feeding the entire machine.

[0077] The visual inspection unit 500 is located above the main traction mechanism 300 and performs real-time online image acquisition on the conveyed raw material bag roll to detect appearance defects of the packaging bag; the appearance defects include damage, tear, missing material, hole, deformation, etc.

[0078] The intermediate guide roller group, located between the floating tensioning mechanism 200 and the synchronous pressure roller traction mechanism 600, is used to regulate the conveying path of the material belt;

[0079] The synchronous pressure roller traction mechanism 600 is located behind the vision inspection mechanism 500 and is used to limit the raw material bag and drag the raw material bag forward.

[0080] The cutting mechanism 700 is located behind the synchronous pressure roller traction mechanism 600 and is used to cut the raw material bag;

[0081] The material transfer assembly 800 is located on the rear side of the cutting mechanism 700 and is used to transport the cut raw material bag to the sorting mechanism 900.

[0082] The sorting mechanism 900 is located above the rear half of the material transfer assembly 800. It is used to receive defect signals from the visual inspection mechanism 500 and automatically separate qualified packaging bags from damaged or defective unqualified packaging bags, thereby achieving the classification and rejection of good and bad products.

[0083] The front guide roller assembly 100 includes a guide roller frame 101;

[0084] The floating tensioning mechanism 200 includes a tensioning frame 201. The upper half of the tensioning frame 201 is sequentially equipped with a first tensioning roller 202, a second tensioning roller 203, a third tensioning roller 206, and a fourth tensioning roller 207 from front to back. A positioning shaft 208 is located in the lower half of the tensioning frame 201. Two rotating sleeves 209 are rotatably mounted on the positioning shaft 208. The front end of each rotating sleeve 209 is simultaneously connected to a swing frame 210. The swing frame 210 is equipped with a first swing roller 211 and a second swing roller 212. An extension arm 213 is provided at the rear end of each rotating sleeve 209. The rear half of each extension arm 213 is open to the airflow. A guide shaft 215 is connected, and a guide sleeve 216 is slidably mounted on the guide shaft 215. A guide post 217 is provided on the guide sleeve 216. The guide post 217 is slidably mounted on the power disk 218. The power disk 218 and the guide post 217 are eccentrically positioned. The power disk 218 is connected to the output end of the output shaft 219. The output shaft 219 is mounted on a support seat 220. The support seat 220 is mounted on a tensioning power source 221 via a support frame 222. The tensioning power source 221 is located in the lower half of the guide roller frame 101 and is connected to the input end of the output shaft 219, used to drive the power disk 218 to rotate.

[0085] The main traction mechanism 300 includes a main traction frame 301. Two mounting seats 302 are provided in the middle section of the main traction frame 301. The mounting seats 302 are connected to each other by a main traction roller 303. A traction motor 305 for driving the main traction roller 303 to rotate is provided on the outside of any mounting seat 302. Two driven traction wheels 306 that cooperate with the main traction roller 303 are provided above the main traction roller 303. Each driven traction wheel 306 is detachably connected to the main traction frame 301 through a positioning member 307.

[0086] The visual inspection mechanism 500 includes an inspection frame 501 mounted on the main traction frame 301. The area from the front end of the inspection frame 501 to the front end of the main traction frame 301 forms a first inspection area, and the area from the rear end of the inspection frame 501 to the rear end of the main traction frame 301 forms a second inspection area. A first inspection camera 502 and a second inspection camera 503 are respectively mounted on the front and rear ends of the inspection frame 501. The mechanism also includes an annular shadowless light source assembly mounted on the visual inspection mechanism 500 to provide uniform illumination for the first inspection camera 502 and the second inspection camera 503, eliminating reflections and shadows, and improving image acquisition clarity.

[0087] The middle section guide roller group includes a first guide roller 505, a second guide roller 506, a third guide roller 507, and a fourth guide roller 508 arranged sequentially from front to back along the main traction frame 301; the first guide roller 505 and the second guide roller 506 are located in the front half of the main traction frame 301, and the third guide roller 507 and the fourth guide roller 508 are located in the rear half of the main traction frame 301. The rear end of the main traction frame 301 is also provided with an extension frame 509, and a fifth guide roller 510 is provided on the extension frame 509.

[0088] The synchronous pressure roller traction mechanism 600 includes a rotating cylinder 601 mounted on an operating table 1000. The rear side of the rotating cylinder 601 has a traction shaft 602. One end of the traction shaft 602 is rotatably connected to a traction seat 603, and the other end is connected to the output end of a traction power source 605. Both the traction power source 605 and the traction seat 603 are mounted on the operating table 1000. Several synchronous pressure rollers 606 are mounted on the traction shaft 602.

[0089] The cutting mechanism 700 includes a mounting cavity 701 formed on one side of the operating table 1000. A safety door 702 is provided in the mounting cavity 701. A base plate 703 is provided inside the mounting cavity 701. At least two power cylinders 705 are provided on the base plate 703. The output end of each power cylinder 705 is connected to the lower end of the lower lifting seat 706. The two sides of the lower lifting seat 706 are slidably sleeved on each first guide rod 707. The upper end of each first guide rod 707 is connected to the operating table 1000. A cutting component 708 is provided at the upper end of the lower lifting seat 706. An opening 709 is provided at the upper end of the operating table 1000, which passes through the mounting cavity 701. A guide rail 710 is provided at the opening 709. The cutting component 708 extends slidably upward and is located at the opening 709. Both sides of the cutting component 708 are provided with sliding grooves 711 that cooperate with the guide rails 710.

[0090] Both sides of the lower lifting seat 706 are connected to the two sides of the upper lifting platform 713 located above the operating table 1000 via connectors 712. The connector 712 includes a first hinge arm 715, the lower end of which is hinged to the lower lifting seat 706. The upper half of the first hinge arm 715 extends out of the mounting cavity 701 through a notch 716 formed on the operating table 1000, and its upper end is hinged to one side of a rotating member 717. The rotating member 717 is rotatably connected to a cutting frame 718, which is mounted on the operating table 1000. The other side of the rotating member 717 is hinged to a second hinge. The lower end of the arm 719 is hinged, and the upper end of the second hinged arm 719 is hinged to the upper lifting platform 713. The lower part of the upper lifting platform 713 has the lower cutting component 708, and the lower end of the lower cutting component 708 is provided with the upper cutting component 720. The upper lifting platform 713 and the lower cutting component 708 are respectively sleeved on each column 721. The upper end of each column 721 is connected to the cutting frame 718, and the lower end of each column 721 is connected to the operating table 1000. There is a spring 722 sleeved on each column 721 between the upper lifting platform 713 and the lower cutting component 708.

[0091] The material transfer assembly 800 includes a material transfer cavity 801 opened on the operating table 1000. A plurality of material transfer conveyor belts 802 are provided in the material transfer cavity 801. The material transfer conveyor belts 802 are driven by a material transfer motor provided in the material transfer cavity 801.

[0092] The sorting mechanism 900 includes a sorting rack 901 located in the rear half of the material transfer chamber 801. The sorting rack 901 is mounted on the operating table 1000. A slide rail 902 is provided along the length of the sorting rack 901. A good product unloading mechanism 905 and a defective product rejection mechanism 903 are provided on the sorting rack 901.

[0093] The good product unloading mechanism 905 includes a lead screw 906 rotatably mounted at the lower end of the material distribution frame 901. The lead screw 906 is driven by a material distribution motor 907 located outside the material distribution frame 901. A material distribution seat 908 passes through the lead screw 906. The upper end of the material distribution seat 908 is slidably connected to the material distribution frame 901 via a slide rail 902. The lower end of the material distribution seat 908 is connected to the upper end of a first fixing member 910 via several positioning pins 909. Second fixing pins are provided on both sides of the lower end of the first fixing member 910. The two second fixing members 911 are connected at their middle sections by a reinforcing rod 912. A rotating rod 913 is rotatably inserted through the lower half of each of the second fixing members 911. A rotary motor 915 for driving the rotating rod 913 is provided on the outside of each of the second fixing members 911. Several inclined push rods 916 are provided on the rotating rod 913, and a push head 917 is provided at the lower end of each push rod 916. The defective product rejection mechanism 903 has the same structure as the good product unloading mechanism 905.

[0094] The operating table 1000 is provided with a feeding mechanism 918 and a recycling mechanism 919 on both sides respectively;

[0095] The unloading mechanism 918 includes a plurality of unloading conveying mounting slots 920 opened on the operating table 1000, a plurality of unloading conveyor belts 922 are provided on the unloading frame 921, and a pusher head 917 is provided between each pair of adjacent unloading conveyor belts 922. The feeding section of each unloading conveyor belt 922 is located at each unloading conveying mounting slot 920. The unloading frame 921 is provided with an unloading conveying motor 923 for driving the movement of the unloading conveyor belts 922.

[0096] The recycling mechanism 919 includes a plurality of recycling mounting slots 925 opened on the operating table 1000. Each of the recycling mounting slots 925 is provided with a recycling conveyor belt 926. The operating table 1000 is provided with a recycling motor 927 for driving the operation of each of the recycling conveyor belts 926. A recycling box 928 is placed on one side of the operating table 1000.

[0097] A vision-based detection-based PVC raw material bag breakage separation control system, the system comprising:

[0098] The visual signal acquisition module is used to continuously acquire images of the conveyed raw material bag roll material through the first detection camera 502 and the second detection camera 503 in the first detection area and the second detection area respectively, to obtain original image signals of appearance defects including damage, cracks, missing materials, holes and deformation, and to synchronously transmit the original image signals to the defect recognition and positioning module.

[0099] The defect identification and localization module is used to identify defects, determine defect types, and calibrate defect location coordinates on the received image signals, generate defect location pulse signals, defect length signals, and good / defective product classification signals, and transmit the above signals to the motion coordination control module in real time.

[0100] The motion coordination control module is used to receive various signals output by the defect identification and positioning module. Based on the preset mechanical distance from the detection area to the synchronous pressure roller traction mechanism 600 and the cutting mechanism 700 and the conveying speed of the material belt, it calculates and outputs traction speed adjustment commands, cutting trigger commands and sorting execution commands.

[0101] The traction control module is used to control the speed and running time of the traction power source 605 of the synchronous pressure roller traction mechanism 600 according to the traction speed adjustment command output by the motion coordination control module, adjust the material belt conveying distance and conveying sequence, so that the defective position reaches the cutting station, or so that the defect-free material belt is conveyed at a uniform speed according to the standard packaging bag length.

[0102] The cutting execution control module is used to control the action sequence of the power cylinder 705 of the cutting mechanism 700 according to the cutting trigger command output by the motion coordination control module, so as to realize small-range cutting of defective areas or continuous cutting of standard size of defect-free strips.

[0103] The sorting logic control module is used to send independent execution signals to the good product feeding mechanism 905 and the defective product rejection mechanism 903 respectively according to the sorting execution instructions output by the motion coordination control module, and control the start, stop and rotation direction of the sorting motor 907 and the rotary motor 915 to realize the automatic diversion of good products to the feeding mechanism 918 and defective products to the recycling mechanism 919.

[0104] The continuous operation control module is used to output continuous operation commands to the traction control module and the cutting execution control module when no appearance defects are detected, so that the synchronous pressure roller traction mechanism 600 maintains a constant conveying speed and the cutting mechanism 700 cuts periodically according to the standard packaging bag size, thus maintaining continuous and stable production of the whole machine.

[0105] The tension real-time feedback module is used to collect tension data of the floating tensioning mechanism 200 and adjust the speed of the tensioning power source 221 in a closed loop to maintain tension stability.

[0106] A method for separating damaged PVC raw material bags based on visual detection, the method comprising the following steps:

[0107] After the PVC raw material bag roll is released from the feeding drum, it first enters the front guide roller group 100 for direction limiting and path straightening, while also distributing the material feeding resistance. Then, the roll enters the floating tensioning mechanism 200. The tensioning power source 221 of the floating tensioning mechanism 200 drives the output shaft 219 to rotate, which in turn drives the power disk 218 to rotate. The guide post 217 slides through the power disk 218 and is eccentrically positioned relative to it. The lower end of the guide post 217 is connected to a guide sleeve 216, which slides on the guide shaft 215. When the power disk 218 rotates, it drives the guide post 217 to move eccentrically, causing the guide post 217 to move the guide sleeve 216 on the guide shaft 215. The sliding motion causes the guide shaft 215 to swing up and down. The swinging of the guide shaft 215 causes the extension arm 213 to swing, and the extension arm 213 causes the rotating sleeve 209 to rotate around the positioning shaft 208. The rotating sleeve 209 causes the swing frame 210 to swing synchronously, and the swing frame 210 causes the first swing roller 211 and the second swing roller 212 to swing up and down. The material strip passes through the first tension roller 202, the second swing roller 212, the second tension roller 203, the first swing roller 211, the third tension roller 206, and the fourth tension roller 207 in sequence. Relying on the swing frame 210 to drive the first swing roller 211 and the second swing roller 212 to swing up and down, the tension of the material strip is adaptively adjusted to buffer the speed difference between unwinding and traction.

[0108] After the material belt leaves the floating tensioning mechanism 200, it enters the main traction mechanism 300. With the cooperation of the main traction roller 303 and the driven traction wheel 306, the traction motor 305 drives the entire machine to feed the material belt forward. The material belt passes through the middle guide roller group on the main traction frame 301, and successively passes the first guide roller 505, the second guide roller 506, the third guide roller 507, the fourth guide roller 508 and the fifth guide roller 510 on the extension frame 509, continuously straightening the conveying path. When the material belt is in the area above the main traction mechanism 300, the vision inspection mechanism 500 starts working. The first inspection camera 502 in the first inspection area and the second inspection camera 503 in the second inspection area sequentially perform online image acquisition on the conveying material belt, and detect appearance defects such as surface damage, cracks, missing material, holes, and deformation of the material belt. The acquired image signals are synchronously transmitted to the control system to complete defect identification, positioning and good / defective product determination.

[0109] The inspected material strip enters the synchronous pressure roller traction mechanism 600. The traction power source 605 drives the traction shaft 602 to rotate the synchronous pressure roller 606. The synchronous pressure roller 606 limits the material strip and drags it forward to the cutting mechanism 700 station. The cutting mechanism 700 receives instructions from the control system, and the power cylinder 705 drives the lower lifting seat 706 to move up and down. The lower lifting seat 706 drives the upper lifting platform 713 to move synchronously through the first hinge arm 715, the rotating part 717, and the second hinge arm 719, so that the upper cutting component 720 and the lower cutting component 708 move relative to each other to complete the material strip cutting. When a defect is detected, only a small area of ​​the defective area is cut; when there is no defect, it is continuously cut according to the standard packaging bag size. The cut raw material bag is transported to the sorting mechanism 900 area by the transfer conveyor belt 802 of the transfer component 800.

[0110] The sorting mechanism 900 performs a diversion action based on the visual inspection results. Good products are processed by the good product unloading mechanism 905. The sorting motor 907 drives the lead screw 906 to move the sorting seat 908. The rotary motor 915 drives the rotary rod 913 to rotate the push rod 916 and the push head 917, pushing the good products to the unloading conveyor belt 922 of the unloading mechanism 918 for transport to the next process. Defective products are pushed to the recycling conveyor belt 926 of the recycling mechanism 919 by the defective product rejection mechanism 903 with the same structural action, and finally fall into the recycling box 928 for collection. In the whole process, the control system calculates and controls the timing of traction speed adjustment, cutting triggering, and sorting execution based on the mechanical distance from the detection area to the synchronous pressure roller traction mechanism 600 and the cutting mechanism 700 and the conveying speed of the material belt, so as to realize the coordinated operation of the entire process of feeding, detection, cutting and sorting.

[0111] The PVC raw material bag damage separation device, system and method based on visual inspection provided by this invention, through modular structural design and full-process collaborative control logic, can be adapted to actual production conditions with different production speeds, different bag sizes and different defect detection accuracies. It has good scenario scalability and parameter adjustability. Two typical implementation methods are given below in combination with specific application requirements.

[0112] Example 1: Implementation method for separating damaged PVC raw material bags in high-speed mass production

[0113] This embodiment is designed for high-speed automated packaging production lines with a daily production capacity of ≥500,000 units, focusing on continuous and stable operation and efficient sorting.

[0114] Structural parameter settings: The front guide roller group 100 uses 3 stainless steel mirror guide rollers with a surface roughness Ra≤0.8μm to reduce the frictional resistance of the material belt; the tensioning power source 221 of the floating tensioning mechanism 200 is a 750W servo motor, the swing frame 210 swings with a stroke of ±50mm and a response time ≤50ms; the main traction mechanism 300 has a traction speed of 120m / min, and the driven traction wheel 306 is rubber-coated, with stable and adjustable clamping force; the vision inspection mechanism 500 is equipped with a 5-megapixel global shutter camera with a frame rate of 60fps and an inspection accuracy of 0.1mm; the cutting mechanism 700 has a power cylinder 705 with a stroke of 30mm, a cutting cycle of 0.5s / time, and supports continuous cutting of standard bag lengths up to 300mm.

[0115] Control parameter settings: Defect identification response time ≤ 100ms, motion coordination control module calculation cycle 10ms; sorting mechanism 900 push action response ≤ 80ms, good / defective product diversion accuracy ≥ 99.5%.

[0116] Operation process: After the roll material is unwound, it is straightened by guide rollers and buffered by floating tension, and then conveyed at a high speed of 120m / min; dual cameras simultaneously collect images and identify defects such as damage and holes in real time; defect-free strips are continuously cut to a standard length of 300mm, good products enter the unloading line, and defective products are accurately rejected and sent to the recycling bin, with continuous production without downtime throughout the entire process.

[0117] Example 2: Implementation Method for High-Precision Customized PVC Raw Material Bag Damage Separation

[0118] This embodiment is designed for customized production scenarios with small batches, multiple specifications, and high testing requirements, focusing on accurate defect location and flexible tailoring.

[0119] Structural parameters: The front guide roller group 100 uses anti-static guide rollers, suitable for ultra-thin PVC strips (0.06mm thick) that are easily attracted by static electricity; the floating tensioning mechanism 200 has a swing stroke of ±30mm, closed-loop tension control, and a fluctuation range of ≤±2N; the main traction mechanism 300 has a traction speed of 30m / min, supports inching feeding and precise length setting; the vision inspection mechanism 500 is equipped with a 12-megapixel area array camera, paired with a ring shadowless light source, which can identify micro-cracks ≥0.05mm. The cutting mechanism 700 supports local cutting of defective areas as small as 50mm, avoiding waste of good strips.

[0120] Control parameters: Defect location positioning accuracy is set to ±0.2mm, supporting automatic measurement and grading of defect length. Traction speed adjustment accuracy is ±1mm to ensure precise alignment of the defect area with the cutting station.

[0121] Operation process: The ultra-thin strip is unwound smoothly, and the low-tension adaptive tensioning prevents stretching deformation; low-speed, high-precision visual inspection marks the location of minute defects; the control system adjusts the feeding speed according to the defect coordinates, only cutting the defective section, and the remaining good strip continues to be conveyed; the sorting mechanism collects the strips according to the defect level to meet customized quality control needs.

Claims

1. A visual detection-based PVC raw material bag breakage separation device, characterized in that, include: The front guide roller group (100) is set between the unloading drum and the floating tensioning mechanism (200) to limit the direction of the unloaded raw material bag roll and regulate the conveying path of the material belt; at the same time, it shares the material resistance. A floating tensioning mechanism (200) is located behind the front guide roller group (100) and is used to adaptively adjust the tension of the raw material bag strip by swinging the swing arm up and down; and to buffer the speed difference between unwinding and traction. The main traction mechanism (300) is located behind the floating tensioning mechanism (200) and serves as the power output end for feeding the entire machine. A visual inspection mechanism (500) is installed above the main traction mechanism (300) to collect online images of the raw material bag rolls being conveyed in real time, for detecting defects in the appearance of the packaging bags; The intermediate guide roller group, located between the floating tensioning mechanism (200) and the synchronous pressure roller traction mechanism (600), is used to regulate the conveying path of the material belt; The synchronous pressure roller traction mechanism (600) is located behind the vision inspection mechanism (500) and is used to limit the raw material bag and drag the raw material bag forward. The cutting mechanism (700) is located behind the synchronous pressure roller traction mechanism (600) and is used to cut the raw material bag; A material transfer assembly (800) is disposed on the rear side of the cutting mechanism (700) for conveying the cut raw material bag to the sorting mechanism (900); The sorting mechanism (900) is located above the rear half of the transfer assembly (800) and is used to receive defect signals from the visual inspection mechanism (500). It automatically separates qualified packaging bags from damaged or defective unqualified packaging bags, thereby achieving the classification and rejection of good and bad products.

2. The PVC raw material bag breakage separation device based on visual detection as described in claim 1, characterized in that: The front guide roller assembly (100) includes a guide roller frame (101). The floating tensioning mechanism (200) includes a tensioning frame (201). The upper half of the tensioning frame (201) is sequentially equipped with a first tensioning roller (202), a second tensioning roller (203), a third tensioning roller (206), and a fourth tensioning roller (207) from front to back. A positioning shaft (208) is located on the lower half of the tensioning frame (201). Two rotating sleeves (209) are rotatably mounted on the positioning shaft (208). The front end of each rotating sleeve (209) is simultaneously connected to a swing frame (210). The swing frame (210) is equipped with a first swing roller (211) and a second swing roller (212). An extension arm (213) is provided at the rear end of each rotating sleeve (209). The rear half of each extension arm (213) is connected via… A guide shaft (215) is connected, and a guide sleeve (216) is slidably mounted on the guide shaft (215). A guide post (217) is mounted on the guide sleeve (216). The guide post (217) is slidably mounted on the power disk (218). The power disk (218) and the guide post (217) are eccentrically mounted. The power disk (218) is connected to the output end of the output shaft (219). The output shaft (219) is mounted on the support seat (220). The support seat (220) is mounted on the tensioning power source (221) through the support frame (222). The tensioning power source (221) is located in the lower half of the guide roller frame (101) and is connected to the input end of the output shaft (219) to drive the power disk (218) to rotate.

3. The PVC raw material bag breakage separation device based on visual detection as described in claim 1, characterized in that: The main traction mechanism (300) includes a main traction frame (301). Two mounting seats (302) are provided in the middle section of the main traction frame (301). The mounting seats (302) are connected to each other by a main traction roller (303). A traction motor (305) for driving the main traction roller (303) to rotate is provided on the outside of any mounting seat (302). Two driven traction wheels (306) are provided above the main traction roller (303) for cooperating with the main traction roller (303). Each driven traction wheel (306) is detachably connected to the main traction frame (301) through a positioning member (307).

4. The PVC raw material bag breakage separation device based on vision detection as described in claim 3, characterized in that: The visual inspection mechanism (500) includes an inspection frame (501) mounted on the main traction frame (301). The front end of the inspection frame (501) to the front end of the main traction frame (301) forms a first inspection area, and the rear end of the inspection frame (501) to the rear end of the main traction frame (301) forms a second inspection area. A first inspection camera (502) and a second inspection camera (503) are respectively mounted on the front end and the rear end of the inspection frame (501). The mechanism also includes an annular shadowless light source assembly mounted on the visual inspection mechanism (500) to provide uniform illumination for the first inspection camera (502) and the second inspection camera (503), eliminate reflections and shadows, and improve the clarity of image acquisition.

5. The PVC raw material bag breakage separation device based on visual detection as described in claim 4, characterized in that: The middle section guide roller group includes a first guide roller (505), a second guide roller (506), a third guide roller (507), and a fourth guide roller (508) arranged sequentially from front to back along the main traction frame (301); the first guide roller (505) and the second guide roller (506) are located in the front half of the main traction frame (301), the third guide roller (507) and the fourth guide roller (508) are located in the rear half of the main traction frame (301), and an extension frame (509) is also provided at the rear end of the main traction frame (301), on which a fifth guide roller (510) is provided.

6. The PVC raw material bag breakage separation device based on vision detection as described in claim 5, characterized in that: The synchronous pressure wheel traction mechanism (600) includes a rotating cylinder (601) set on the operating table (1000). The rear side of the rotating cylinder (601) has a traction shaft (602). One end of the traction shaft (602) is rotatably connected to the traction seat (603), and the other end is connected to the output end of the traction power source (605). The traction power source (605) and the traction seat (603) are both set on the operating table (1000). A plurality of synchronous pressure wheels (606) are sleeved on the traction shaft (602).

7. The PVC raw material bag breakage separation device based on visual detection as described in claim 6, characterized in that: The cutting mechanism (700) includes a mounting cavity (701) formed on one side of the operating table (1000). A safety door (702) is provided at the mounting cavity (701). A base plate (703) is provided inside the mounting cavity (701). At least two power cylinders (705) are provided on the base plate (703). The output end of each power cylinder (705) is connected to the lower end of the lower lifting seat (706). The two sides of the lower lifting seat (706) are slidably sleeved on each of the first guide rods (707). The upper end of the rod (707) is connected to the operating table (1000). The upper end of the lower lifting seat (706) is provided with a cutting component (708). The upper end of the operating table (1000) is provided with an opening (709) that passes through the mounting cavity (701). A guide rail (710) is provided at the opening (709). The cutting component (708) extends upward slidably and is located at the opening (709). Both sides of the cutting component (708) are provided with sliding grooves (711) that cooperate with the guide rail (710). Both sides of the lower lifting seat (706) are connected to the upper lifting platform (713) above the operating table (1000) via connectors (712). The connector (712) includes a first hinge arm (715), the lower end of which is hinged to the lower lifting seat (706). The upper half of the first hinge arm (715) extends out of the mounting cavity (701) through a notch (716) on the operating table (1000), and the upper end is hinged to one side of a rotating member (717). The rotating member (717) is rotatably connected to a cutting frame (718), which is mounted on the operating table (1000). The other side of the rotating member (717) is hinged to a second hinge. The lower end of the arm (719) is hinged, and the upper end of the second hinged arm (719) is hinged to the upper lifting platform (713). The lower part of the upper lifting platform (713) has the lower cutting component (708). The lower end of the lower cutting component (708) is provided with the upper cutting component (720). The upper lifting platform (713) and the lower cutting component (708) are respectively sleeved on each column (721). The upper end of each column (721) is connected to the cutting frame (718), and the lower end of each column (721) is connected to the operating table (1000). There is a spring (722) sleeved on each column (721) between the upper lifting platform (713) and the lower cutting component (708).

8. The PVC raw material bag breakage separation device based on visual detection as described in claim 7, characterized in that: The material transfer assembly (800) includes a material transfer chamber (801) opened on the operating table (1000), and a plurality of material transfer conveyor belts (802) are provided in the material transfer chamber (801). The material transfer conveyor belts (802) are driven by a material transfer motor provided in the material transfer chamber (801). The sorting mechanism (900) includes a sorting rack (901) located in the rear half of the transfer chamber (801). The sorting rack (901) is mounted on the operating table (1000). A slide rail (902) is provided along the length of the sorting rack (901). A good product unloading mechanism (905) and a defective product rejection mechanism (903) are provided on the sorting rack (901). The good product unloading mechanism (905) includes a lead screw (906) rotatably mounted at the lower end of the material distribution frame (901). The lead screw (906) is driven by a material distribution motor (907) mounted on the outside of the material distribution frame (901). A material distribution seat (908) is mounted on the lead screw (906). The upper end of the material distribution seat (908) is slidably connected to the material distribution frame (901) via a slide rail (902). The lower end of the material distribution seat (908) is connected to the upper end of a first fixing member (910) via several positioning pins (909). The lower ends of the first fixing member (910) are provided with second positioning pins on both sides. The fixing member (911) is connected in the middle section by the reinforcing rod (912). The rotating rod (913) is rotatably inserted through the lower half of each of the second fixing members (911). A rotary motor (915) for driving the rotating rod (913) to rotate is provided on the outside of each of the second fixing members (911). Several inclined push rods (916) are provided on the rotating rod (913). A push head (917) is provided at the lower end of each push rod (916). The defective product rejection mechanism (903) has the same structure as the good product unloading mechanism (905). The operating table (1000) is provided with a feeding mechanism (918) and a recycling mechanism (919) on both sides respectively. The unloading mechanism (918) includes a plurality of unloading conveyor mounting slots (920) opened on the operating table (1000), and a plurality of unloading conveyor belts (922) are provided on the unloading rack (921). Each pair of adjacent unloading conveyor belts (922) has a pusher head (917). The feeding section of each unloading conveyor belt (922) is located at each unloading conveyor mounting slot (920). The unloading rack (921) is provided with an unloading conveyor motor (923) for driving the unloading conveyor belts (922) to move. The recycling mechanism (919) includes a plurality of recycling installation slots (925) opened on the operating table (1000), each of the recycling installation slots (925) is provided with a recycling conveyor belt (926), the operating table (1000) is provided with a recycling motor (927) for driving the operation of each recycling conveyor belt (926), and a recycling box (928) is placed on one side of the operating table (1000).

9. A vision-based detection-based PVC raw material bag damage separation control system, characterized in that, The system includes: The visual signal acquisition module is used to continuously acquire images of the conveyed raw material bag roll material through the first detection camera (502) and the second detection camera (503) in the first detection area and the second detection area respectively, to obtain original image signals of appearance defects including damage, cracks, missing materials, holes and deformation, and to synchronously transmit the original image signals to the defect recognition and positioning module. The defect identification and localization module is used to identify defects, determine defect types, and calibrate defect location coordinates on the received image signals, generate defect location pulse signals, defect length signals, and good / defective product classification signals, and transmit the above signals to the motion coordination control module in real time. The motion coordination control module is used to receive various signals output by the defect identification and positioning module, and calculate and output traction speed adjustment command, cutting trigger command and sorting execution command based on the preset mechanical distance from the detection area to the synchronous pressure roller traction mechanism (600) and the cutting mechanism (700) and the conveying speed of the material belt; The traction control module is used to control the speed and running time of the traction power source (605) of the synchronous pressure wheel traction mechanism (600) according to the traction speed adjustment command output by the motion coordination control module, adjust the material belt conveying distance and conveying sequence, so that the defective position reaches the cutting station, or so that the defect-free material belt is conveyed at a uniform speed according to the standard packaging bag length. The cutting execution control module is used to control the action sequence of the power cylinder (705) of the cutting mechanism (700) according to the cutting trigger command output by the motion coordination control module, so as to realize small-scale cutting of defective areas or continuous cutting of standard size of defect-free strips. The sorting logic control module is used to send independent execution signals to the good product feeding mechanism (905) and the defective product rejection mechanism (903) respectively according to the sorting execution instructions output by the motion coordination control module, and control the start, stop and rotation direction of the sorting motor (907) and the rotary motor (915) to realize the automatic diversion of good products to the feeding mechanism (918) and defective products to the recycling mechanism (919); The continuous operation control module is used to output continuous operation commands to the traction control module and the cutting execution control module when no appearance defects are detected, so that the synchronous pressure roller traction mechanism (600) maintains a constant conveying speed and the cutting mechanism (700) cuts periodically according to the standard packaging bag size, so as to maintain the continuous and stable production of the whole machine. The tension real-time feedback module is used to collect the tension data of the floating tensioning mechanism (200) and adjust the speed of the tensioning power source (221) in a closed loop to maintain tension stability.

10. A method for separating damaged PVC raw material bags based on visual detection, characterized in that, The method includes the following steps: After the PVC raw material bag roll is released from the feeding drum, it first enters the front guide roller group (100) for direction limiting and material path regularization, while distributing the material feeding resistance. Then the material roll enters the floating tensioning mechanism (200). The tensioning power source (221) of the floating tensioning mechanism (200) drives the output shaft (219) to rotate. The output shaft (219) drives the power disk (218) to rotate. The guide column (217) slides through the power disk (218) and is eccentrically set with the power disk (218). The lower end of the guide column (217) is connected to the guide sleeve (216), and the guide sleeve (216) slides on the guide shaft (215). When the power disk (218) rotates, it drives the guide column (217) to move eccentrically with it. The guide column (217) drives the guide sleeve (216) to slide on the guide shaft (215). The movement causes the guide shaft (215) to swing up and down; the swing of the guide shaft (215) causes the extension arm (213) to swing, the extension arm (213) causes the rotating sleeve (209) to rotate around the positioning shaft (208), the rotating sleeve (209) causes the swing frame (210) to swing synchronously, and the swing frame (210) causes the first swing roller (211) and the second swing roller (212) to swing up and down; the material strip passes around the first tension roller (202), the second swing roller (212), the second tension roller (203), the first swing roller (211), the third tension roller (206), and the fourth tension roller (207) in sequence, relying on the swing frame (210) to drive the first swing roller (211) and the second swing roller (212) to swing up and down, adaptively adjusting the tension of the material strip and buffering the speed difference between unwinding and traction; After the material belt leaves the floating tensioning mechanism (200), it enters the main traction mechanism (300). With the cooperation of the main traction roller (303) and the driven traction wheel (306), the traction motor (305) provides the power for feeding the entire machine, driving the material belt to continuously move forward. The material belt passes through the middle guide roller group on the main traction frame (301), and sequentially passes the first guide roller (505), the second guide roller (506), the third guide roller (507), the fourth guide roller (508), and the fifth guide roller on the extension frame (509). 510), continuously regulate the conveying path; when the material belt is in the area above the main traction mechanism (300), the vision inspection mechanism (500) starts working, the first inspection camera (502) in the first inspection area and the second inspection camera (503) in the second inspection area, sequentially collect online images of the conveying material belt, detect surface defects such as damage, cracks, missing materials, holes, and deformation of the material belt, and transmit the collected image signals synchronously to the control system to complete defect identification, positioning and good / bad product determination; The strip that has completed the inspection enters the synchronous pressure roller traction mechanism (600). The traction power source (605) drives the traction shaft (602) to rotate the synchronous pressure roller (606). The synchronous pressure roller (606) limits the strip and drags the strip forward to the cutting mechanism (700) station. The cutting mechanism (700) receives the control system command and the power cylinder (705) drives the lower lifting seat (706) to move up and down. The lower lifting seat (706) drives the upper lifting platform (713) to move synchronously through the first hinge arm (715), the rotating part (717), and the second hinge arm (719), so that the upper cutting component (720) and the lower cutting component (708) move relative to each other to complete the strip cutting. When a defect is detected, only the defect area is cut in a small area. When there is no defect, it is cut continuously according to the standard packaging bag size. The cut raw material bag is transported to the sorting mechanism (900) area by the transfer conveyor belt (802) of the transfer component (800). The sorting mechanism (900) performs a diversion action based on the visual inspection results. Good products are processed by the good product unloading mechanism (905). The sorting motor (907) drives the lead screw (906) to move the sorting seat (908). The rotary motor (915) drives the rotary rod (913) to rotate the push rod (916) and the push head (917), pushing the good products to the unloading conveyor belt (922) of the unloading mechanism (918) and conveying them to the next process. Defective products are pushed to the recycling conveyor belt (926) of the recycling mechanism (919) by the defective product rejection mechanism (903) with the same structural action, and finally fall into the recycling box (928) to complete the collection. In the whole process, the control system calculates and controls the timing of traction speed regulation, cutting triggering and sorting execution based on the mechanical distance from the detection area to the synchronous pressure roller traction mechanism (600) and the cutting mechanism (700) and the conveying speed of the material belt, so as to realize the coordinated operation of the entire process of feeding, detection, cutting and sorting.

Images