Packaging bag production system with real-time defect detection and dual-spectrum irradiation sterilization functions

Abstract

The invention belongs to the technical field of intelligent packaging manufacturing, and particularly relates to a packaging bag production system with real-time defect detection and dual-spectrum irradiation sterilization, which is characterized in that real-time defect identification and digital accurate positioning are realized through high-speed image acquisition and intelligent analysis; and ink curing and surface sterilization are completed in an integrated unit. Finally, closed-loop quality control from defect discovery to processing to early warning is realized, and the quality and the safety level of packaged printed matters are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of intelligent packaging manufacturing, and particularly relates to a packaging bag production system with real-time defect detection and dual-spectrum irradiation sterilization. BACKGROUND

[0002] With the wide application of soft packaging bags in food, chemical industry, feed and other fields, its typical production process flow is: printing of whole roll base film, ink curing, winding / cutting, bag making. In this process, online quality detection after the printing process, efficient ink curing, and the required film surface sterilization pretreatment to meet the hygiene standards are the core links that determine the quality, safety and production efficiency of the final packaging product. However, the existing technology has many shortcomings in the above-mentioned links, resulting in fragmented production process, waste of resources and difficulty in guaranteeing product control consistency.

[0003] In terms of defect detection and processing after the printing of the film roll is completed, the existing production line generally has the problems of detection lag and information disconnection. At present, the mainstream method still relies on manual visual sampling inspection after the packaging bag processing is completed, or uses simple photoelectric sensors for offline and sampling detection after winding. This kind of method not only has low efficiency and is easily affected by subjective factors, but also cannot realize real-time and comprehensive quality monitoring of the film in high-speed continuous production, resulting in the difficulty in timely finding printing defects such as misregistration, ink spot contamination and character loss. The defective products flow into subsequent high-value-added processes such as cutting and bag making, causing serious waste of raw materials and energy. Even if the defects are detected, the existing technology lacks effective online positioning and information binding mechanism. Common defect marking methods (such as subsequent laser dotting and inkjet marking) are additional operations in the offline or later process, which cannot form digital defect coordinates that can be bound with production data information in real time at the moment of detection, so that the subsequent process cannot realize precise and automatic rejection, affecting the lean level of the overall production line.

[0004] In terms of post-printing processing, the existing technology has the disadvantages of process dispersion and single function. At present, ink curing is mostly achieved by hot air drying or single-wavelength ultraviolet (UV) light curing technology. The important link of microorganism control (pre-sterilization) on the surface of the printed film is often ignored or only treated as an independent and post-process, such as chemical fumigation or setting up ultraviolet disinfection equipment in another independent section. This series layout of physically separating "curing" and "sterilization" not only significantly prolongs the length of the production line, increases the equipment floor area and energy consumption, but also leads to low comprehensive processing efficiency due to process fragmentation. For packaging bags used for food packaging, effective and timely sterilization treatment of the printed surface of the film before cutting and bag making can reduce the potential pollution risk of microorganisms on the surface of the printed ink to the packaging contents.

[0005] In summary, the prior art lacks an integrated solution that can integrate high-speed online detection and high-efficiency composite processing on a continuous production line after printing and before bag making. This results in fragmented production processes, waste of resources, and difficulty in ensuring the printing quality and microbial safety level of the final packaging product from the source. SUMMARY

[0006] The present application provides a packaging bag production system with real-time defect detection and dual-spectrum irradiation sterilization. The core is to realize real-time recognition and digital precise positioning of defects through high-speed image acquisition and intelligent analysis, and to complete ink curing and surface sterilization in an integrated unit. Finally, a closed-loop quality control from defect discovery to processing to early warning is realized, improving the quality and safety level of packaging printed products.

[0007] The present application relates to a packaging bag production system with real-time defect detection and dual-spectrum irradiation sterilization, which comprises an image acquisition box device, a dual-spectrum irradiation ink curing and sterilization box device, a central control unit, and an industrial display screen.

[0008] The film first enters the image acquisition box device to complete image acquisition of the printed surface, and then enters the dual-spectrum irradiation ink curing and sterilization box device for synchronous processing of UVA curing and UVC sterilization.

[0009] The image acquisition box device includes a picture integration and counting subsystem, a defect discrimination analysis subsystem, and a defect marking and information binding subsystem.

[0010] The picture integration and counting subsystem aligns and seamlessly splices the collected film images to obtain a two-dimensional digital image corresponding to a single packaging bag, and simultaneously records the digital serial number information Bag_ID of the single packaging bag image and the accurate timestamp T of the collected film image; the two-dimensional digital image, the digital serial number information Bag_ID, and the accurate timestamp T are transmitted to the printing defect real-time discrimination analysis subsystem and the defect marking and information binding subsystem.

[0011] The defect discrimination analysis subsystem is used for defect recognition and classification of the two-dimensional digital image to obtain defect information, and transmits the defect information to the defect marking and information binding subsystem.

[0012] The defect marking and information binding subsystem reads the real-time speed V fed back by the conveyor belt of the production line in real time, obtains the unique coordinate information (L, Bag_ID) of the defective bag on the continuous film in combination with the accurate timestamp T of the specific defective bag, and transmits the unique coordinate information (L, Bag_ID) to the central control unit.

[0013] The central control unit adjusts the power of the strip-shaped UVA curing light source and the strip-shaped UVC sterilization light source based on the unique coordinate information (L, Bag_ID) of the defective packaging bag.

[0014] The dual-spectrum irradiation ink curing and sterilization chamber uses a strip-shaped UVA curing light source and a strip-shaped UVC sterilization light source to cure and sterilize the ink on the printing surface of a film moving on the production line.

[0015] The central control unit is connected to the industrial display screen. The central control unit stores data and sends control commands to the image acquisition box and the dual-spectrum irradiation ink curing and sterilization box. The industrial display screen displays coordinate information, defect information, and abnormal information in real time.

[0016] Compared with the prior art, the technical solution proposed in this invention brings the following significant beneficial effects: Compared with the traditional manual sampling inspection model, which is slow and has a high rate of missed detection, by generating composite coordinate information of "digital serial number information + meter information", defects can be located online in a unique and traceable manner without the need for additional physical marking devices. This provides a direct and reliable instruction basis for the accurate rejection of defects in subsequent processes (such as cutting and bag making), thereby significantly reducing the generation of defective products and saving raw materials.

[0017] Existing ink curing technologies often employ hot air drying or single-wavelength ultraviolet (UV) light curing, neglecting the microbial control (pre-sterilization) of the printed film surface, or treating it merely as a separate, post-processing step after bag making. This invention integrates UVA ink curing and UVC surface pre-sterilization into a single dual-spectrum irradiation chamber, simultaneously and collaboratively treating the film. This shortens the production process, reduces equipment footprint, and minimizes material turnover. Integrated processing lowers overall energy consumption, and immediate sterilization of the printed film enhances the hygiene and safety of the final packaged product.

[0018] Centered on a central control unit, the system deeply integrates image acquisition, defect analysis, information binding, process control, and data storage functions. It generates structured defect data packages, enabling real-time visual monitoring of production quality. Simultaneously, all defect information is bound to physical coordinates, forming a queryable and traceable historical quality database. Based on this defect information, the power of the dual-spectrum irradiation chamber is adjusted, providing data support for process improvement and quality analysis while also reducing system energy consumption. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the principle of a packaging bag production system with real-time defect detection and dual-spectrum irradiation sterilization proposed in this invention. Figure 2 This is a schematic diagram of the image acquisition box device proposed in this invention; Figure 3 This is a schematic diagram of the dual-spectrum irradiation box device proposed in this invention; Figure 4 This is a schematic diagram illustrating the working principle of the image integration and counting subsystem of the present invention; Figure 5 This is a schematic diagram illustrating the working principle of the defect marking and information binding subsystem of the present invention. Detailed Implementation

[0021] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0022] like Figure 1 As shown, the present invention relates to a packaging bag production system with real-time defect detection and dual-spectrum irradiation sterilization. The system includes an image acquisition box device, a dual-spectrum irradiation ink curing and sterilization box device, a central control unit, and an industrial display screen.

[0023] The film first enters the image acquisition box device to complete the image acquisition of the printed surface, and then enters the dual-spectrum irradiation ink curing and sterilization box device for simultaneous UVA curing and UVC sterilization.

[0024] The image acquisition box device includes an image integration and counting subsystem, a defect discrimination and analysis subsystem, and a defect marking and information binding subsystem.

[0025] The image integration and counting subsystem aligns and seamlessly stitches the acquired film images to obtain a two-dimensional digital image corresponding to a single packaging bag, and simultaneously records the digital sequence number information Bag_ID of the single packaging bag image and the precise timestamp T of the acquired film image; the two-dimensional digital image, digital sequence number information Bag_ID, and precise timestamp T are transmitted to the real-time printing defect discrimination and analysis subsystem and the defect marking and information binding subsystem.

[0026] Specifically, the system receives pulse signals from the production line encoder and parallel image data streams from the dual-line scan camera synchronous acquisition unit. Using the pulse signals from the production line encoder as a timing reference, the line images acquired by the two line scan cameras at the same time are aligned and seamlessly stitched together to form a complete cross-sectional line image that matches the physical width of the film. Based on a preset bag length reference value, a complete two-dimensional digital image corresponding to a single packaging bag is obtained. The system records the digital sequence number information Bag_ID of the single packaging bag image and the precise timestamp T of the first frame line image of the single packaging bag image through a global counter. The digital sequence number information Bag_ID and the timestamp T are then transmitted to the defect marking and information binding subsystem.

[0027] The defect discrimination and analysis subsystem is used to identify and classify defects in two-dimensional digital images, obtain defect information, and transmit the defect information to the defect marking and information binding subsystem.

[0028] The defect marking and information binding subsystem reads the real-time speed V from the conveyor belt of the production line in real time. Combined with the precise timestamp T of a specific defective bag, it calculates the cumulative travel distance from the detection start point to the current location of the defective bag through integral calculation, i.e., the meter information L. The meter information L and the digital serial number information Bag_ID together constitute the unique coordinate information (L, Bag_ID) of the defect on the continuous film, and transmits the unique coordinate information (L, Bag_ID) to the central control unit.

[0029] The central control unit adjusts the power of the strip UVA curing light source and the strip UVC sterilization light source based on the unique coordinate information (L, Bag_ID) of the defective packaging bag.

[0030] The dual-spectrum irradiation ink curing and sterilization chamber uses a strip-shaped UVA curing light source and a strip-shaped UVC sterilization light source to cure and sterilize the ink on the printing surface of a film moving on the production line.

[0031] In the specific implementation process, the central control unit adjusts the power of the strip UVA curing light source and the strip UVC sterilization light source based on the unique coordinate information (L, Bag_ID) of the defective packaging bag in order to save the system's energy consumption. Since the defective packaging bag does not meet the production standards, the power of the strip UVA curing light source and the strip UVC sterilization light source can be reduced or turned off.

[0032] A schematic diagram of the image acquisition box device is shown below. Figure 2As shown, this is used to acquire images of the printed film surface in motion on the production line; it includes an image acquisition box support box 1, an image acquisition box upper cover 2, an image acquisition box strip heat dissipation grille 3, a dual-line array camera synchronous acquisition unit 4, a strip LED light source 5, and an image acquisition box cable through hole 6.

[0033] The image acquisition box support housing 1 is made of stainless steel, with a channel formed at its bottom for the film to pass through. The housing reduces the impact of natural light on the image. The image acquisition box top cover 2 is also made of stainless steel and is fixed to the top of the support housing 1. It can be opened and closed for easy maintenance. The image acquisition box strip heat dissipation grilles 3 are symmetrically distributed on both sides of the housing, with four grilles on each side, providing heat dissipation. The dual-line array camera synchronous acquisition unit 4 consists of two line array industrial cameras, fixed in the middle of the top cover 2. The line connecting the two line array industrial cameras is perpendicular to the direction of production line travel, and the lenses are perpendicular to the film surface for synchronously acquiring line array images of the film surface. The strip LED light source 5 consists of two strip white LEDs with a color temperature of 6500K, fixed on both sides of the two line array industrial cameras to provide uniform illumination to the film surface. The image acquisition box cable through-hole 6 is located on one side of the top cover and consists of three through-holes, allowing cables to pass through for connection to external power supply and control system.

[0034] A schematic diagram of the dual-spectrum irradiation ink curing and sterilization chamber device is shown below. Figure 3 As shown, this is used for curing ink and sterilizing the surface of printed films moving on the production line. It includes a dual-spectrum irradiation chamber support box 7, a spectral irradiation chamber upper cover 8, a spectral irradiation chamber strip heat dissipation grille 9, a strip UVA curing light source 10, a strip UVC sterilization light source 11, and a spectral irradiation chamber cable passage 12.

[0035] The dual-spectrum irradiation chamber support box 7 is made of stainless steel, with a channel formed at its bottom for the film to pass through. The box body can reduce the potential damage of ultraviolet rays to the surrounding environment. The dual-spectrum irradiation chamber top cover 8 is made of stainless steel and is fixed to the top of the dual-spectrum irradiation chamber support box 7. It can be opened and closed for easy maintenance. The dual-spectrum irradiation chamber strip heat dissipation grilles 9 are symmetrically distributed on both sides of the box body, with four grilles on each side, which have heat dissipation function. The strip UVA curing light source 10 adopts a UVLED strip array with a peak wavelength of 395nm and is fixed to one side of the spectral irradiation chamber top cover 8. It is used to cure the ink on the printing surface of the film moving on the production line. The strip UVC sterilization light source 11 adopts a strip low-pressure mercury lamp with a wavelength of 254nm and is fixed to the other side of the spectral irradiation chamber top cover 8. The strip UVC sterilization light source 11 is placed parallel to the strip UVA curing light source 10. The spectral irradiation chamber cable through hole 12 is located on one side of the spectral irradiation chamber top cover 8 and consists of two through holes. It provides a cable through hole for connecting external power supply and control system.

[0036] The raw linear array image data stream of the thin film is synchronously acquired in the image acquisition box device, and then synthesized into a two-dimensional digital image of a single bag through the image integration and counting subsystem. The image integration and counting subsystem is a key data preprocessing module that connects physical image acquisition and upper-level logical analysis. Its core task is to convert the raw linear array image data streams provided by two linear array industrial cameras into two-dimensional digital images of "individual packaging bags" with clear spatial attributes and unique identifiers. Each two-dimensional digital image corresponds to a digital sequence number and a precise timestamp. like Figure 4 The diagram shown illustrates the principle of the image integration and counting subsystem. The working process of the image integration and counting subsystem is as follows: Step 401, the image integration and counting subsystem receives pulse signals from the production line encoder and parallel image data streams from the dual-line array camera synchronous acquisition unit; Step 402: Using the pulse signal of the production line encoder as a timing reference, the line images acquired by the two line scan cameras at the same time are aligned and seamlessly stitched together to form a complete cross-sectional line image that matches the physical width of the thin film.

[0037] Since the film moves continuously and its width may exceed the field of view of a single line scan camera, this subsystem adopts an image stitching algorithm based on encoder pulse synchronization. Specifically, the system receives pulse signals from the encoder of the production line in real time, uses this as a timing reference, and aligns and seamlessly stitches the line images acquired by the two line scan cameras at the same time to form a complete cross-sectional line image that matches the physical width of the film.

[0038] Step 403: The continuous cross-sectional line images are dynamically cached and frame synthesized in memory according to the preset bag length reference value, that is, the length of a complete packaging bag pattern in the direction of travel, and finally output as a series of complete two-dimensional digital images (Bag_001, Bag_002...) corresponding to a single packaging bag.

[0039] Step 404: The image integration and counting subsystem maintains a continuously increasing global counter. Each time a complete image is successfully synthesized and output, the counter is incremented by one. This count value is the digital sequence number information Bag_ID of the bag image. At the same time, the subsystem records the precise timestamp T of the first frame of the bag image being acquired.

[0040] Step 405: Transmit the two-dimensional digital image, digital serial number information Bag_ID, and precise timestamp T to the real-time printing defect discrimination and analysis subsystem and the defect marking and information binding subsystem.

[0041] After receiving a two-dimensional digital image, the defect discrimination and analysis subsystem analyzes the image using algorithms to identify and classify defects, obtain defect information, and transmit the defect information to the defect marking and information binding subsystem.

[0042] The algorithm of the real-time printing defect discrimination and analysis subsystem adopts the feature matching difference algorithm. For each input packaging bag image, the subsystem first performs standardized preprocessing such as grayscale conversion, noise reduction, and contrast enhancement. The packaging bag image is compared and analyzed with the pre-stored standard template image to identify printing defect features. All detected defects are clustered and feature extracted. Based on the defects' shape, area, location, and contrast, they are automatically classified according to predefined classification standards, and structured defect information is generated. The defect information includes: the two-dimensional digital image of the defect, the defect type, the defect confidence level, and the pixel coordinate bounding box of the defect in the image.

[0043] The defect marking and information binding subsystem combines the production line speed with the precise timestamp from the image integration and counting subsystem to calculate the meter information of the defect. Together, they constitute the unique coordinate information of the defect pattern on the continuous film. The coordinate information and defect information are bound together to form a defect data packet and uploaded to the central control unit. like Figure 5 The diagram shown illustrates the principle of the defect marking and information binding subsystem. The principle process of the defect marking and information binding subsystem is as follows: 501, the defect marking and information binding subsystem reads the real-time speed V from the conveyor belt of the production line in real time, combines it with the precise timestamp T corresponding to a specific defect bag from the image integration and counting subsystem, and performs an integral calculation S = The cumulative travel distance from the detection start point to the current location of the defective bag is accurately calculated, i.e., the meter information L. The meter information L and the numerical sequence information Bag_ID together constitute the unique coordinate information (L, Bag_ID) of the defect on the continuous film. This coordinate can directly correspond to the rejection station action point in the subsequent slitting step or bag making step. 502, the defect tagging and information binding subsystem associates the defect information from the discriminant analysis subsystem with the coordinate information it generates in real time, and encapsulates it into a structured defect data packet {L, Bag_ID, defect information}; 503. The defect data packet is uploaded to the central control unit in real time through a high-speed communication interface. This binding process ensures that every identified defect can find its corresponding physical production serial number and precise location in the database stored in the central control unit.

[0044] The central control unit is connected to the industrial display screen. The central control unit is responsible for data storage and issuing stop signals to the image acquisition box and the dual-spectrum irradiation ink curing and sterilization box. The industrial display screen is responsible for real-time monitoring and display of coordinate and defect information, as well as anomaly warnings.

[0045] The central control unit, as the core of system data storage, processing, and decision-making, receives and stores all defect information and coordinate information uploaded by the defect marking and information binding subsystem. The industrial display screen is connected to the central control unit and displays the defect information and coordinate information in real time. When the number of defect data packets detected in a short period of time or continuously reaches the threshold N, the central control unit determines it as a major printing anomaly and immediately sends a stop operation command to the image acquisition box and the dual-spectrum irradiation ink curing and sterilization box via digital I / O or fieldbus. The industrial screen connected to the central control unit displays an alarm with the words "printing anomaly".

[0046] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0047] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0048] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0049] In the embodiments provided by this invention, it should be understood that the disclosed apparatus / terminal devices and methods can be implemented in other ways. For example, the apparatus / terminal device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0050] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0051] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0052] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A packaging bag production system with real-time defect detection and dual-spectrum irradiation sterilization, characterized in that, The system includes: The image acquisition box device includes an image integration and counting subsystem, a defect discrimination and analysis subsystem, and a defect marking and information binding subsystem. It is used to acquire a two-dimensional digital image corresponding to a single packaging bag, and simultaneously record the digital sequence number information Bag_ID of the single packaging bag image and the precise timestamp T of the acquired film image. It performs defect identification and classification on the two-dimensional digital image to obtain a specific defective bag. Using the real-time speed V of the conveyor belt, combined with the precise timestamp T of the specific defective bag, it obtains the unique coordinate information (L, Bag_ID) of the defective bag on the continuous film. The central control unit adjusts the power of the strip UVA curing light source and the strip UVC sterilization light source based on the unique coordinate information (L, Bag_ID) of the defective packaging bag; The dual-spectrum irradiation ink curing and sterilization chamber uses a strip-shaped UVA curing light source and a strip-shaped UVC sterilization light source to cure and sterilize the ink on the printed surface of the film on the production line.

2. The packaging bag production system according to claim 1, the system further includes an industrial display screen, a central control unit connected to the industrial display screen, the central control unit stores data and sends control commands to the image acquisition box device and the dual-spectrum irradiation ink curing and sterilization box device; the industrial display screen displays coordinate information, defect information, and abnormal information in real time.

3. The packaging bag production system according to claim 1, wherein the image integration and counting subsystem aligns and seamlessly splices the acquired film images to obtain a two-dimensional digital image corresponding to a single packaging bag, and simultaneously records the digital sequence number information Bag_ID of the single packaging bag image and the precise timestamp T of the acquired film image; the above information is transmitted to the real-time printing defect discrimination and analysis subsystem and the defect marking and information binding subsystem.

4. In the packaging bag production system according to claim 1, the defect marking and information binding subsystem reads the real-time speed V fed back by the conveyor belt of the production line in real time, and combines it with the precise timestamp T of the specific defective bag. Through integral calculation, it accurately calculates the cumulative travel length from the detection starting point to the current position of the defective bag, i.e., the meter information L. The meter information L and the digital sequence information Bag_ID together constitute the unique coordinate information (L, Bag_ID) of the defect on the continuous film.

5. The packaging bag production system according to claim 3, in the image integration and counting subsystem, receives pulse signals from the production line encoder and parallel image data streams from the dual-line array camera synchronous acquisition unit, uses the pulse signals from the production line encoder as a timing reference, aligns and seamlessly splices the line images acquired by the two line array cameras at the same time to form a complete cross-sectional line image that matches the physical width of the film, and obtains a complete two-dimensional digital image corresponding to a single packaging bag according to a preset bag length reference value.

6. In the packaging bag production system according to claim 1, in the image integration and counting subsystem, the digital sequence information Bag_ID of a single packaging bag image is recorded by a global counter.

7. The packaging bag production system according to claim 1, wherein the image acquisition box device further includes an image acquisition box support box (1), an image acquisition box upper cover (2), an image acquisition box strip heat dissipation grille (3), a dual line array camera synchronous acquisition unit (4), a strip LED light source (5), and an image acquisition box cable through hole (6).

8. The packaging bag production system according to claim 1, wherein the dual-spectrum irradiation ink curing and sterilization box device includes a dual-spectrum irradiation box support box body (7), a spectral irradiation box upper plate cover (8), a spectral irradiation box strip heat dissipation grid (9), a strip UVA curing light source (10), a strip UVC sterilization light source (11), and a spectral irradiation box cable through hole (12).

9. In the packaging bag production system according to claim 8, the strip UVA curing light source (10) adopts a UVLED strip array with a peak wavelength of 395nm, and the strip UVC sterilization light source (11) adopts a strip low-pressure mercury lamp with a wavelength of 254nm.

10. The packaging bag production system according to claim 1, wherein the defect identification employs a feature matching differential algorithm.

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