A material full-process tracking method, system and device for crosscutting the offline area of a production line and a storage medium

Abstract

This invention relates to the field of steel coil production technology, and in particular to a method, system, equipment, and storage medium for full-process material tracking in the off-line area of ​​a cross-cutting production line. The system ensures the accuracy of identification and the authority of instructions at the production source by having a primary system generate unique tracking identifiers and production instructions for each material unit and synchronize these to a secondary system. The secondary system executes physical processing and transfer operations based on the production instructions and automatically collects real-time status data, achieving precise control and data acquisition of the production process and enabling flexible production functions such as multiple openings from a single coil. By associating the collected real-time status data with the corresponding unique tracking identifier, accurate process tracking data is formed, ensuring the continuity and consistency of material information in the transfer process. Ultimately, a full-link tracking information system indexed by unique tracking identifiers is constructed, significantly improving production transparency and management precision.

Description

Technical Field

[0001] This invention relates to the field of steel coil production technology, and in particular to a method, system, equipment, and storage medium for full-process material tracking in the off-line area of ​​a cross-cutting production line. Background Technology

[0002] In industrial automation production scenarios, the cross-cutting process, as a crucial link in continuous roll material cutting and connecting process manufacturing and discrete manufacturing, is central to the tracking and management of materials after cross-cutting. This is critical to overall production efficiency, quality traceability, and supply chain responsiveness. Traditional management models generally rely on manual barcode scanning, paper records, or local storage and processing by standalone PLCs. While these methods can barely sustain standardized, high-volume production, they are no longer adequate for the growing demands of flexible and customized production. The root cause lies in the fact that the existing technical architecture fails to unify the flow of production instructions, physical materials, and data information. This results in the system losing its ability to accurately control and trace the entire process when faced with complex production orders, such as multiple rolls being opened from a single roll. This lack of system performance directly leads to a series of production problems, including ineffective tracking and traceability, low production collaboration efficiency, high management costs, and the continuous accumulation of compliance risks.

[0003] Specifically, existing technical solutions suffer from two levels of disruption. First, there's the disruption of the information chain: after materials are cut, material information (such as associated master roll batches, sub-roll serial numbers, process parameters, etc.) often cannot be automatically and accurately inherited and bound to the material entity. In traditional management models, manual recording becomes the primary source of error, easily leading to the loss or distortion of material information at critical nodes. This makes full-chain quality traceability—from finished products back to raw materials, process parameters, and even operational nodes—extremely difficult or even impossible. Second, there's the disruption between the system and the process: there's a lack of efficient and standardized data exchange mechanisms between L2 (process control level), responsible for production planning and scheduling, and L1 (equipment control level), responsible for equipment execution. Existing communication protocols struggle to handle the complex information required for flexible production, resulting in inaccurate production instructions and incomplete equipment performance feedback. Simultaneously, the offline processes—from weighing, coding, stacking to warehousing—operate in isolation, relying on manual coordination and judgment. This fails to form an intelligent closed loop that automatically senses material location and status and drives continuous flow, leading to material backlog, frequent waiting times, and overall low logistics efficiency.

[0004] Research has revealed that the aforementioned problems all stem from a deeper, interconnected systemic technical issue: in cross-cutting production lines, especially in the off-line area for flexible production, existing control and tracking systems cannot achieve real-time, reliable collaboration between Level 2 and Level 1 (L1) systems regarding production instructions and execution data; they cannot establish and maintain a consistent, automatically identifiable, unique digital identity for each flowing material unit; and consequently, they cannot construct an automated closed-loop management system based on real-time data and covering the entire off-line material process. These three factors easily lead to a loss of control over material tracking at the source, process, and endpoint. Summary of the Invention

[0005] The main objective of this invention is to provide a method, system, equipment, and storage medium for full-process material tracking in the off-line area of ​​a cross-cutting production line, in order to solve the technical problem in the prior art of how to achieve real-time, accurate, unique, and full-process synchronization and closed-loop control of production instructions, material entities, and data information in the off-line area of ​​a cross-cutting production line.

[0006] To achieve the above objectives, this invention provides a material tracking method for the off-line area of ​​a cross-cutting production line, comprising a two-layer control architecture of a primary system and a secondary system, specifically including the following steps: S1. Obtain production order information and master roll information. The first-level system generates a unique tracking identifier and corresponding production instruction information for each material unit based on the production order information and master roll information, and sends the unique tracking identifier and the production instruction information to the second-level system simultaneously. S2. The secondary system receives and stores the unique tracking identifier and the production instruction information, and performs physical processing and transfer operations on the corresponding material unit according to the production instruction information; S3. During the physical processing and transfer operation, the secondary system automatically collects the real-time status data of each material unit and associates the real-time status data with the corresponding unique tracking identifier to form process tracking data; S4. The primary system continuously receives and stores the process tracking data to form end-to-end tracking information from the issuance of production instructions to the physical flow of materials; wherein the end-to-end tracking information is indexed by the unique tracking identifier.

[0007] Furthermore, the primary system generates corresponding production instruction information for each material unit, specifically including the following steps: Obtain production order information and master roll information, wherein the production order information includes the fixed length requirements and bundling requirements for multiple orders; Based on the length requirements in the production order information, the multiple orders are optimized and sorted from longest to shortest to generate multiple sets of sub-roll production settings for the same master roll. Each set of sub-roll production settings corresponds to one sub-roll and includes the length, cutting quantity, and target weight of the sub-roll. A unique sub-volume identifier is generated for each sub-volume production setting information, and a corresponding bundle number is generated based on the sub-volume identifier, thereby forming the unique tracking identifier; The production instruction information containing the sub-volume production setting information and the unique tracking identifier of the sub-volume are simultaneously sent to the secondary system.

[0008] Furthermore, step S3 also includes the following steps: The system acquires key nodes of the material unit during the physical processing and transfer operation, and acquires real-time status data of the material unit at the key nodes; acquires expected status data of the material unit at the key nodes, and compares the real-time status data with the expected status data to obtain a comparison result; determines whether the comparison result exceeds a preset threshold, and if it exceeds the preset threshold, triggers a first abnormal handling mechanism; wherein, the key nodes include weighing stations, printing stations, and area separation points between each station; Alternatively, determine whether the unique tracking identifier of each material unit is duplicated; if duplicates are found, trigger the second anomaly handling mechanism.

[0009] More preferably, step S3 specifically includes the following steps: When the material unit is transferred to the weighing station, the secondary system receives the weight measurement value of the material unit, uses the weight measurement value as the first real-time status data, and associates the first real-time status data with the unique tracking identifier of the material unit in real time. When the material unit is transferred to the printing station, the secondary system receives the printing position information and printing completion information, uses the printing position information and printing completion information as second real-time status data, and associates the second real-time status data with the unique tracking identifier of the material unit in real time. Throughout the entire process of the material unit flowing through the off-line area of ​​the cross-cutting production line, sensors are arranged at the separation points of each area. The secondary system continuously receives the trigger signals from the sensors and generates the position and occupancy status information of the material unit in real time as the third real-time status data based on the sequence of the trigger signals. The third real-time status data is then associated in real time with the unique tracking identifier of the material unit. The secondary system integrates the associated first real-time status data, second real-time status data, and third real-time status data according to time sequence to form the process tracking data.

[0010] More preferably, when the material unit is transferred to the printing station, the following steps are also included: The width specification information of the current material unit and the pre-established dynamic adjustment model of the printing position are obtained. The width specification information is input into the dynamic adjustment model of the printing position, and the printing position information of the current material unit is output. The dynamic adjustment model of the printing position is used to determine the target offset of the nozzle in the material width direction under different material unit width specification information, so that the printing content is located in a preset area on the material surface. The secondary system generates a printing position adjustment command based on the printing position information of the current material unit; When the material unit is transferred to the printing station, the secondary system executes the printing position adjustment command, controls the actuator of the printing equipment to drive the printhead to move by the target offset, and then controls the printing equipment to print on the current material unit.

[0011] More preferably, the first anomaly handling mechanism specifically includes the following steps: The secondary system immediately freezes the subsequent automatic process of the current material unit at the critical node and sends a first-level alarm message, which includes at least the unique tracking identifier, the name of the critical node, the real-time status data, and the expected status data. Technicians use the secondary system to process the current material unit based on the preset handling procedure input from the first-level alarm information; wherein, the handling procedure includes: releasing the unit after confirming the real-time status data, releasing the unit after manually inputting corrected real-time status data, or marking the current material unit as pending inspection and guiding it to an isolation station; The secondary system uses this abnormal event and the handling process as the first abnormal state data, associates the first abnormal state data with the unique tracking identifier, and uploads it to the primary system.

[0012] More preferably, the second anomaly handling mechanism specifically includes the following steps: The secondary system immediately suspends the flow of all material units involving duplicate identifiers and sends a second-level alarm message, which includes at least the duplicate unique tracking identifier and the current location of all material units involved. Technicians verify the unique tracking identifier and regenerate unique tracking identifiers for material units located at the front end of the production line that have duplicate unique tracking identifiers; Subsequently, the secondary system lifts the pause, allowing the material unit to continue its flow. It uses the abnormal event and the regenerated unique tracking identifier as the second abnormal state status data, associates the second abnormal state status data with the material unit that regenerated the unique tracking identifier, and uploads it to the primary system.

[0013] This invention also provides a material tracking system for the off-line area of ​​a cross-cutting production line, which applies the material tracking method described above, and includes a primary system server, a secondary system control center, and material handling equipment; wherein; The primary system server is used to acquire production order information and master roll information; based on the production order information and master roll information, it generates a unique tracking identifier and corresponding production instruction information for each material unit; it synchronously sends the unique tracking identifier and the production instruction information to the secondary system control center; it continuously receives and stores process tracking data from the secondary system control center to form full-link tracking information from the issuance of production instructions to the physical flow of materials; The secondary system control center, which is communicatively connected to the primary system server, is used to receive and store the unique tracking identifier and the production instruction information from the primary system server; based on the production instruction information, it controls the material handling equipment to perform physical processing and circulation operations of the corresponding material units; during the physical processing and circulation operations, it automatically collects real-time status data of each material unit; it associates the real-time status data with the corresponding unique tracking identifier to form the process tracking data, and sends the process tracking data to the primary system server; The material handling equipment, connected to the secondary system control center, includes at least a cross-cutting shear, a stacker crane, a weighing device, a printing device, and a roller conveyor, and is used to perform material cutting, stacking, weighing, printing, and conveying under the control of the secondary system control center.

[0014] The present invention also provides a material tracking device for the off-line area of ​​a cross-cutting production line, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the material tracking method described above.

[0015] The present invention also provides a storage medium storing a computer program that, when executed by a processor, implements the steps of the material tracking method described above.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention ensures the accuracy of identification and the authority of instructions at the production source by having a primary system generate unique tracking identifiers and production instructions for each material unit and synchronize them to a secondary system. The secondary system executes physical processing and transfer operations based on the production instructions and automatically collects real-time status data, achieving precise control and data acquisition of the production process and enabling flexible production functions such as multiple rolls. By associating the collected real-time status data with the corresponding unique tracking identifiers, accurate process tracking data is formed, ensuring the continuity and consistency of material information in the transfer process. Finally, the primary system receives and integrates all process tracking data to build a full-link tracking information system indexed by unique tracking identifiers. This achieves automatic aggregation, precise association, and complete traceability of information throughout the entire process from production instructions to the physical transfer of materials, significantly improving production transparency and management refinement. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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 the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a flowchart illustrating the control method of a material tracking method in the off-line area of ​​a cross-cutting production line according to an embodiment of the present invention.

[0019] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0024] The purpose of this invention is to establish a two-layer control architecture of L1 (Level 1 system) and L2 (Level 2 system), adding and improving the production function of multiple rolls, realizing standardized production control of splitting a master roll into multiple sub-rolls throughout the entire process, and improving production flexibility, order fulfillment accuracy, and material tracking integrity. It solves the technical problem in existing technologies of how to achieve real-time, accurate, unique, and end-to-end synchronous and closed-loop control of production instructions, material entities, and data information in the off-line area of ​​a cross-cutting production line.

[0025] Please see Figure 1 This embodiment provides a material tracking method for the off-line area of ​​a cross-cutting production line, including a two-layer control architecture of a primary system and a secondary system, specifically including the following steps: S1. Obtain production order information and master roll information. The first-level system generates a unique tracking identifier and corresponding production instruction information for each material unit based on the production order information and master roll information, and sends the unique tracking identifier and the production instruction information to the second-level system simultaneously. S2. The secondary system receives and stores the unique tracking identifier and the production instruction information, and performs physical processing and transfer operations on the corresponding material unit according to the production instruction information; S3. During the physical processing and transfer operation, the secondary system automatically collects the real-time status data of each material unit and associates the real-time status data with the corresponding unique tracking identifier to form process tracking data; S4. The primary system continuously receives and stores the process tracking data to form end-to-end tracking information from the issuance of production instructions to the physical flow of materials; wherein the end-to-end tracking information is indexed by the unique tracking identifier.

[0026] This embodiment ensures the accuracy of identification and the authority of instructions at the production source by having a primary system generate unique tracking identifiers and production instructions for each material unit and synchronize them to a secondary system. The secondary system executes physical processing and transfer operations based on the production instructions and automatically collects real-time status data, achieving precise control and data acquisition of the production execution process and enabling flexible production functions such as multiple rolls. By associating the collected real-time status data with the corresponding unique tracking identifiers, accurate process tracking data is formed, ensuring the continuity and consistency of material information in the transfer process. Finally, the primary system receives and integrates all process tracking data to build a full-link tracking information system indexed by unique tracking identifiers. This achieves automatic aggregation, precise association, and complete traceability of information throughout the entire process from production instructions to the physical transfer of materials, significantly improving production transparency and management refinement.

[0027] In one embodiment, the primary system generates corresponding production instruction information for each material unit, specifically including the following steps: Obtain production order information and master roll information, wherein the production order information includes the fixed length requirements and bundling requirements for multiple orders; Based on the length requirements in the production order information, the multiple orders are optimized and sorted from longest to shortest to generate multiple sets of sub-roll production settings for the same master roll. Each set of sub-roll production settings corresponds to one sub-roll and includes the length, cutting quantity, and target weight of the sub-roll. A unique sub-volume identifier is generated for each sub-volume production setting information, and a corresponding bundle number is generated based on the sub-volume identifier, thereby forming the unique tracking identifier; The production instruction information containing the sub-volume production setting information and the unique tracking identifier of the sub-volume are simultaneously sent to the secondary system.

[0028] In this embodiment, by optimizing the sorting of multiple orders from longest to shortest according to their length requirements, multiple sets of sub-roll production setting information are generated. This optimizes the utilization of the master roll material during the cutting planning stage, effectively reducing waste. By generating a unique sub-roll identifier for each set of sub-roll production setting information and deriving a bundle number from it, a refined and hierarchical identification system is constructed, from production plan to specific material entity. This lays a unique data foundation for accurate tracking and traceability throughout the entire process. By synchronously sending instruction information containing complete sub-roll production setting information and a unique tracking identifier to the execution system, the integrity, consistency, and timeliness of the transmission of production targets, process parameters, and material identification information between systems are ensured. This eliminates information errors and omissions at the source, guaranteeing the accuracy and traceability of order execution under the flexible production model.

[0029] In one embodiment, step S3 further includes the following steps: The system acquires key nodes of the material unit during the physical processing and transfer operation, and acquires real-time status data of the material unit at the key nodes; acquires expected status data of the material unit at the key nodes, and compares the real-time status data with the expected status data to obtain a comparison result; determines whether the comparison result exceeds a preset threshold, and if it exceeds the preset threshold, triggers a first abnormal handling mechanism; wherein, the key nodes include weighing stations, printing stations, and area separation points between each station; Alternatively, determine whether the unique tracking identifier of each material unit is duplicated; if duplicates are found, trigger the second anomaly handling mechanism.

[0030] This embodiment automatically collects real-time status data of material units at key nodes such as weighing, printing, and area separation, and compares it in real time with the expected status data of those nodes. This enables real-time monitoring and closed-loop verification of the production and processing status. By judging the comparison results through preset thresholds, the first anomaly handling mechanism is triggered only when the deviation exceeds a reasonable range. This achieves accurate identification and tiered response to production anomalies, avoiding unnecessary production interruptions. By checking the uniqueness of the unique tracking identifier of each material unit in parallel and triggering a second anomaly handling mechanism when duplicates are found, material information confusion and traceability chain breaks caused by identifier conflicts are fundamentally eliminated. The above-mentioned dual anomaly handling mechanism based on real-time data comparison and logical verification constitutes a proactive protection system for production process quality and information integrity, significantly improving the reliability of end-to-end tracking information and the autonomy of the production system.

[0031] More preferably, step S3 specifically includes the following steps: When the material unit is transferred to the weighing station, the secondary system receives the weight measurement value of the material unit, uses the weight measurement value as the first real-time status data, and associates the first real-time status data with the unique tracking identifier of the material unit in real time. When the material unit is transferred to the printing station, the secondary system receives the printing position information and printing completion information, uses the printing position information and printing completion information as second real-time status data, and associates the second real-time status data with the unique tracking identifier of the material unit in real time. Throughout the entire process of the material unit's flow in the cross-cutting production line's off-line area, sensors are arranged at various area separation points. The secondary system continuously receives trigger signals from the sensors and generates the material unit's position and occupancy status information in real time based on the sequence of trigger signals as third real-time status data. This third real-time status data is then associated in real time with the material unit's unique tracking identifier. In this embodiment, a grating is used as a sensor. When the grating is blocked, it indicates that the roller conveyor in this area is occupied, and the next material unit cannot enter this area. This continues until the previous material unit is flowed out of this area, and the pallet information is automatically deleted before the next material unit can enter this area.

[0032] The secondary system integrates the associated first real-time status data, second real-time status data, and third real-time status data according to time sequence to form the process tracking data.

[0033] As a further preferred embodiment, the material unit further includes the following steps when it is transferred to the printing station: The width specification information of the current material unit and the pre-established dynamic adjustment model of the printing position are obtained. The width specification information is input into the dynamic adjustment model of the printing position, and the printing position information of the current material unit is output. The dynamic adjustment model of the printing position is used to determine the target offset of the nozzle in the material width direction under different material unit width specification information, so that the printing content is located in a preset area on the material surface. The secondary system generates a printing position adjustment command based on the printing position information of the current material unit; When the material unit is transferred to the printing station, the secondary system executes the printing position adjustment command, controls the actuator of the printing equipment to drive the printhead to move by the target offset, and then controls the printing equipment to print on the current material unit.

[0034] This embodiment acquires the width specifications of the material unit and inputs them into a pre-established dynamic adjustment model for the printing position. Based on the output printing position information matching the width, it achieves adaptive and precise positioning of the printing position according to the physical dimensions of the material unit. A secondary system generates executable printing position adjustment commands based on this printing position information and sends the commands to the printing equipment, transforming abstract positioning requirements into concrete equipment control actions. By controlling the actuator of the printing equipment to drive the printhead to the calculated target offset according to the commands before printing, it ensures that the printed content on the surface of material units of different widths can stably fall into the preset area. This guarantees the standardization, clarity, and long-term recognizability of the printed markings under varying production conditions, effectively supporting vision-based automatic identification and end-to-end traceability.

[0035] More preferably, the first anomaly handling mechanism specifically includes the following steps: The secondary system immediately freezes the subsequent automatic process of the current material unit at the critical node and sends a first-level alarm message, which includes at least the unique tracking identifier, the name of the critical node, the real-time status data, and the expected status data. Technicians use the secondary system to process the current material unit based on the preset handling procedure input from the first-level alarm information; wherein, the handling procedure includes: releasing the unit after confirming the real-time status data, releasing the unit after manually inputting corrected real-time status data, or marking the current material unit as pending inspection and guiding it to an isolation station; The secondary system uses this abnormal event and the handling process as the first abnormal state data, associates the first abnormal state data with the unique tracking identifier, and uploads it to the primary system.

[0036] More preferably, the second anomaly handling mechanism specifically includes the following steps: The secondary system immediately suspends the flow of all material units involving duplicate identifiers and sends a second-level alarm message, which includes at least the duplicate unique tracking identifier and the current location of all material units involved. Technicians verify the unique tracking identifier and regenerate unique tracking identifiers for material units located at the front end of the production line that have duplicate unique tracking identifiers; Subsequently, the secondary system lifts the pause, allowing the material unit to continue its flow. It uses the abnormal event and the regenerated unique tracking identifier as the second abnormal state status data, associates the second abnormal state status data with the material unit that regenerated the unique tracking identifier, and uploads it to the primary system.

[0037] This invention also provides a material tracking system for the off-line area of ​​a cross-cutting production line, which applies the material tracking method described above, and includes a primary system server, a secondary system control center, and material handling equipment; wherein; The primary system server is used to acquire production order information and master roll information; based on the production order information and master roll information, it generates a unique tracking identifier and corresponding production instruction information for each material unit; it synchronously sends the unique tracking identifier and the production instruction information to the secondary system control center; it continuously receives and stores process tracking data from the secondary system control center to form full-link tracking information from the issuance of production instructions to the physical flow of materials; The secondary system control center, which is communicatively connected to the primary system server, is used to receive and store the unique tracking identifier and the production instruction information from the primary system server; based on the production instruction information, it controls the material handling equipment to perform physical processing and circulation operations of the corresponding material units; during the physical processing and circulation operations, it automatically collects real-time status data of each material unit; it associates the real-time status data with the corresponding unique tracking identifier to form the process tracking data, and sends the process tracking data to the primary system server; The material handling equipment, connected to the secondary system control center, includes at least a cross-cutting shear, a stacker crane, a weighing device, a printing device, and a roller conveyor, and is used to perform material cutting, stacking, weighing, printing, and conveying under the control of the secondary system control center.

[0038] The present invention also provides a material tracking device for the off-line area of ​​a cross-cutting production line, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the material tracking method described above.

[0039] The present invention also provides a storage medium storing a computer program that, when executed by a processor, implements the steps of the material tracking method described above.

[0040] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A material tracking method for the off-line area of ​​a cross-cutting production line, characterized in that, The two-tier control architecture, comprising a primary system and a secondary system, specifically includes the following steps: S1. Obtain production order information and master roll information. The first-level system generates a unique tracking identifier and corresponding production instruction information for each material unit based on the production order information and master roll information, and sends the unique tracking identifier and the production instruction information to the second-level system simultaneously. S2. The secondary system receives and stores the unique tracking identifier and the production instruction information, and performs physical processing and transfer operations on the corresponding material unit according to the production instruction information; S3. During the physical processing and transfer operation, the secondary system automatically collects the real-time status data of each material unit and associates the real-time status data with the corresponding unique tracking identifier to form process tracking data; S4. The primary system continuously receives and stores the process tracking data to form end-to-end tracking information from the issuance of production instructions to the physical flow of materials; wherein the end-to-end tracking information is indexed by the unique tracking identifier.

2. The material tracking method for the off-line area of ​​the transverse cutting production line according to claim 1, characterized in that, The primary system generates corresponding production instruction information for each material unit, specifically including the following steps: Obtain production order information and master roll information, wherein the production order information includes the fixed length requirements and bundling requirements for multiple orders; Based on the length requirements in the production order information, the multiple orders are optimized and sorted from longest to shortest to generate multiple sets of sub-roll production settings for the same master roll. Each set of sub-roll production settings corresponds to one sub-roll and includes the length, cutting quantity, and target weight of the sub-roll. A unique sub-volume identifier is generated for each sub-volume production setting information, and a corresponding bundle number is generated based on the sub-volume identifier, thereby forming the unique tracking identifier; The production instruction information containing the sub-volume production setting information and the unique tracking identifier of the sub-volume are simultaneously sent to the secondary system.

3. The material tracking method for the off-line area of ​​the transverse cutting production line according to claim 1, characterized in that, Step S3 also includes the following steps: The system acquires key nodes of the material unit during the physical processing and transfer operation, and acquires real-time status data of the material unit at the key nodes; acquires expected status data of the material unit at the key nodes, and compares the real-time status data with the expected status data to obtain a comparison result; determines whether the comparison result exceeds a preset threshold, and if it exceeds the preset threshold, triggers a first abnormal handling mechanism; wherein, the key nodes include weighing stations, printing stations, and area separation points between each station; Alternatively, determine whether the unique tracking identifier of each material unit is duplicated; if duplicates are found, trigger the second anomaly handling mechanism.

4. The material tracking method for the off-line area of ​​the transverse cutting production line according to claim 3, characterized in that, Step S3 specifically includes the following steps: When the material unit is transferred to the weighing station, the secondary system receives the weight measurement value of the material unit, uses the weight measurement value as the first real-time status data, and associates the first real-time status data with the unique tracking identifier of the material unit in real time. When the material unit is transferred to the printing station, the secondary system receives the printing position information and printing completion information, uses the printing position information and printing completion information as second real-time status data, and associates the second real-time status data with the unique tracking identifier of the material unit in real time. Throughout the entire process of the material unit flowing through the off-line area of ​​the cross-cutting production line, sensors are arranged at the separation points of each area. The secondary system continuously receives the trigger signals from the sensors and generates the position and occupancy status information of the material unit in real time as the third real-time status data based on the sequence of the trigger signals. The third real-time status data is then associated in real time with the unique tracking identifier of the material unit. The secondary system integrates the associated first real-time status data, second real-time status data, and third real-time status data according to time sequence to form the process tracking data.

5. The material tracking method for the off-line area of ​​the transverse cutting production line according to claim 4, characterized in that, When the material unit is transferred to the printing station, the following steps are also included: The width specification information of the current material unit and the pre-established dynamic adjustment model of the printing position are obtained. The width specification information is input into the dynamic adjustment model of the printing position, and the printing position information of the current material unit is output. The dynamic adjustment model of the printing position is used to determine the target offset of the nozzle in the material width direction under different material unit width specification information, so that the printing content is located in a preset area on the material surface. The secondary system generates a printing position adjustment command based on the printing position information of the current material unit; When the material unit is transferred to the printing station, the secondary system executes the printing position adjustment command, controls the actuator of the printing equipment to drive the printhead to move by the target offset, and then controls the printing equipment to print on the current material unit.

6. The material tracking method for the off-line area of ​​the transverse cutting production line according to claim 3, characterized in that, The first anomaly handling mechanism specifically includes the following steps: The secondary system immediately freezes the subsequent automatic process of the current material unit at the critical node and sends a first-level alarm message, which includes at least the unique tracking identifier, the name of the critical node, the real-time status data, and the expected status data. Technicians use the secondary system to process the current material unit based on the preset handling procedure input from the first-level alarm information; wherein, the handling procedure includes: releasing the unit after confirming the real-time status data, releasing the unit after manually inputting corrected real-time status data, or marking the current material unit as pending inspection and guiding it to an isolation station; The secondary system uses this abnormal event and the handling process as the first abnormal state data, associates the first abnormal state data with the unique tracking identifier, and uploads it to the primary system.

7. The material tracking method for the off-line area of ​​the transverse cutting production line according to claim 3, characterized in that, The second anomaly handling mechanism specifically includes the following steps: The secondary system immediately suspends the flow of all material units involving duplicate identifiers and sends a second-level alarm message, which includes at least the duplicate unique tracking identifier and the current location of all material units involved. Technicians verify the unique tracking identifier and regenerate unique tracking identifiers for material units located at the front end of the production line that have duplicate unique tracking identifiers; Subsequently, the secondary system lifts the pause, allowing the material unit to continue its flow. It uses the abnormal event and the regenerated unique tracking identifier as the second abnormal state status data, associates the second abnormal state status data with the material unit that regenerated the unique tracking identifier, and uploads it to the primary system.

8. A material tracking system for the off-line area of ​​a cross-cutting production line, employing the material tracking method as described in any one of claims 1-7, characterized in that, This includes primary system servers, secondary system control centers, and material handling equipment; in; The primary system server is used to acquire production order information and master roll information; based on the production order information and master roll information, it generates a unique tracking identifier and corresponding production instruction information for each material unit; it synchronously sends the unique tracking identifier and the production instruction information to the secondary system control center; it continuously receives and stores process tracking data from the secondary system control center to form full-link tracking information from the issuance of production instructions to the physical flow of materials; The secondary system control center, which is communicatively connected to the primary system server, is used to receive and store the unique tracking identifier and the production instruction information from the primary system server; based on the production instruction information, it controls the material handling equipment to perform physical processing and circulation operations of the corresponding material units; during the physical processing and circulation operations, it automatically collects real-time status data of each material unit; it associates the real-time status data with the corresponding unique tracking identifier to form the process tracking data, and sends the process tracking data to the primary system server; The material handling equipment, connected to the secondary system control center, includes at least a cross-cutting shear, a stacker crane, a weighing device, a printing device, and a roller conveyor, and is used to perform material cutting, stacking, weighing, printing, and conveying under the control of the secondary system control center.

9. A material tracking device for the off-line area of ​​a cross-cutting production line, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of the material tracking method as described in any one of claims 1 to 7.

10. A storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the material tracking method as described in any one of claims 1 to 7.

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