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CN-122022844-A - Multi-station quality data tracing method and system in packaging pull line production process

CN122022844ACN 122022844 ACN122022844 ACN 122022844ACN-122022844-A

Abstract

The invention relates to the technical field of packaging material production, in particular to a multi-station quality data tracing method and system in a packaging pull line production process. The method comprises the steps of establishing a two-dimensional coordinate system based on a raw material parent roll, periodically implanting anchor points at the edges, marking and recording reference positions, calculating elastic deformation rate based on operation tension and elastic modulus of the material, dynamically compensating transmission length by using the elastic deformation rate to generate a parent roll quality fingerprint image, generating a topological mapping relation based on child roll positions in a slitting link, intercepting and generating child roll quality files, calculating accumulated errors by comparing actual measurement positions with the reference positions in a rewinding process, and carrying out coordinate calibration on the child roll quality files by using the accumulated errors, so that reverse tracing is realized. The invention effectively solves the problem of position drift of the flexible material caused by elastic deformation in multi-working process, and obviously improves the precision and reliability of quality data tracing.

Inventors

  • GAO NING
  • HUANG LEI

Assignees

  • 广州聚合包装材料科技有限公司

Dates

Publication Date
20260512
Application Date
20260130

Claims (10)

  1. 1. The multi-station quality data tracing method in the production process of the package pull line is characterized by comprising the following steps of: establishing a two-dimensional coordinate system based on the length direction and the width direction of a raw material parent roll, periodically implanting anchor point marks carrying unique coding information at the edge of the parent roll according to a preset physical interval, and recording coordinate values of each anchor point mark in the two-dimensional coordinate system as a reference position; Acquiring quality data of each procedure in real time in the production process, simultaneously acquiring the running tension and linear velocity of the parent roll, and calculating the elastic deformation rate by combining the elastic modulus of the material; Generating a topology mapping relation according to the position relation of a plurality of sub-volumes on a parent volume in a splitting link, intercepting data of a corresponding area from the parent volume quality fingerprint map based on the topology mapping relation, and generating sub-volume quality files of all the sub-volumes; And identifying an anchor point mark on the sub-coil in the rewinding process, calculating the accumulated error of the actual measurement position and the reference position of the anchor point mark, and calibrating the longitudinal coordinate of the sub-coil quality file by utilizing the accumulated error, so that the reverse tracing of the original quality parameters from the sub-coil finished product to the parent coil is realized based on the calibrated data.
  2. 2. The method for tracing multi-station quality data in a packaging string production process according to claim 1, wherein the establishing of the two-dimensional coordinate system comprises: defining a physical transmission direction of the raw material parent roll as a transverse coordinate axis, and defining a width direction perpendicular to the physical transmission direction as a longitudinal coordinate axis; Setting the edge of the head end of a raw material parent roll entering a production line as a zero point of a two-dimensional coordinate system; and constructing a two-dimensional coordinate system covering the full width and the full length of the raw material parent roll.
  3. 3. The method of claim 1, wherein the step of implanting an anchor mark carrying unique encoded information comprises: And controlling a code spraying device or a laser etching device to generate an anchor point mark in a non-printing edge area of the parent roll, wherein the anchor point mark is an optically identifiable mark or a physical characteristic mark, including but not limited to an ultraviolet fluorescent two-dimensional code, an infrared invisible bar code or a laser micro-perforation array.
  4. 4. The method for tracing multi-station quality data in a packaging string production process according to claim 1, wherein said calculating process of elastic deformation rate comprises: Acquiring the initial cross-sectional area and the elastic modulus of a raw material parent roll; reading an operation tension value output by the tension sensor at the current sampling moment; Calculating the ratio of the running tension value to the initial cross-sectional area to obtain instantaneous tensile stress; And calculating the ratio of the instantaneous tensile stress to the elastic modulus to obtain the elastic deformation rate at the current sampling moment.
  5. 5. The method of claim 1, wherein the step of dynamically compensating for the transmission length using the elastic deformation rate comprises: Presetting a time sampling period, and calculating the product of a linear velocity average value in the current sampling period and a sampling time length to obtain an increment length; calculating the product of the increment length and the shrinkage correction coefficient to obtain a physical increment length after deducting the stretching deformation; And adding the longitudinal physical coordinates accumulated at the last sampling time with the physical increment length to obtain the longitudinal physical coordinates after the calibration of the current sampling time.
  6. 6. The method for tracing multi-process quality data in a packaging pull line production process according to claim 5, wherein the generating process of the parent roll quality fingerprint map comprises: acquiring the physical installation distance of a sensor of the current quality data in the width direction of the parent roll, and determining the physical installation distance as a transverse coordinate; determining the longitudinal physical coordinates after the calibration of the current sampling time as longitudinal coordinates; and writing the quality data into a two-dimensional matrix node or a database record row determined by the transverse coordinates and the longitudinal coordinates to obtain a parent roll quality fingerprint image containing space-time data.
  7. 7. The multi-process quality data tracing method in a packaging pull line production process according to claim 1, wherein said topology map generating step comprises: acquiring arrangement interval data of the slitting tool groups in the width direction of the parent rolls; And according to the arrangement interval data, distributing a unique sub-volume identification code for each sub-volume generated by cutting, defining a transverse coordinate interval corresponding to each sub-volume identification code in a two-dimensional coordinate system of the parent volume, and establishing a topology mapping table taking the sub-volume identification code as an index key and the transverse coordinate interval as an index value.
  8. 8. The method of claim 1, wherein the step of calibrating the longitudinal coordinates of the sub-coil quality file using accumulated errors comprises: Obtaining a target anchor mark identified in the rewinding process and a reference position of the anchor mark, obtaining a reference position of a previous anchor mark identified last time, calculating a difference value between the target anchor mark and the previous anchor mark to obtain a theoretical physical distance, and calculating an actual measurement running distance between the target anchor mark and the previous anchor mark; And multiplying and correcting the longitudinal coordinates of the data points positioned between the target anchor point mark and the preamble anchor point mark in the sub-volume quality file by utilizing the linear scaling coefficient, and carrying out integral position alignment on the corrected longitudinal coordinates based on the reference position of the target anchor point mark.
  9. 9. The method of claim 1, wherein the step of performing a reverse trace back of the raw quality data from the finished product of the sub-roll to the parent roll comprises: Receiving a query request, wherein the query request comprises a target sub-volume identification code and a relative position value of a defect point on a sub-volume; The method comprises the steps of calibrating a sub-volume quality file, searching a longitudinal coordinate corresponding to the relative position value in the calibrated sub-volume quality file, converting the target sub-volume identification code into a transverse coordinate interval of a parent volume by utilizing the topology mapping table, and searching and outputting a corresponding original quality parameter in a parent volume quality fingerprint image by taking the longitudinal coordinate and the transverse coordinate interval as joint index conditions.
  10. 10. The multi-station quality data tracing system in the production process of the package pull line is characterized by comprising a processor; A memory in which a computer program is stored; Wherein the processor is configured to implement the multi-process quality data traceback method in a packaging string production process as claimed in any one of claims 1 to 9 when executing the computer program.

Description

Multi-station quality data tracing method and system in packaging pull line production process Technical Field The application relates to the technical field of packaging material production. More particularly, the application relates to a multi-station quality data tracing method and system in the production process of a packaging pull line. Background The packaging pull wire is used as an important auxiliary material for packaging in the industries of tobacco, food, medicine and the like, and the production process of the packaging pull wire involves multiple procedures of coating, printing, slitting, rewinding and the like. Along with the continuous improvement of the downstream customer on the product quality requirement, the establishment of a perfect quality traceability system becomes a necessary trend of industry development. The existing quality tracing method mainly relies on batch management and timestamp recording. The batch management method regards the products of the same production batch as a whole, and cannot accurately position the original technological parameters corresponding to the single defect point. The time stamping method can correlate production time and process data, but ignores the problem of elastic deformation of the flexible material under tension. The base material of the packaging pull line is usually polypropylene or polyester film, and tension fluctuation can generate stretching deformation during the running process of the production line, so that accumulated errors exist between the transmission length calculated based on line speed integral and the actual physical length. This error is amplified as the length of the production line increases, such that the mapping between the quality data and the physical location of the material is progressively distorted. The traditional tracing method can only trace the batch level, and cannot accurately locate specific meters or coordinates. When quality complaints occur on the finished product, the original technological parameters of the defect point on the raw material parent roll are difficult to effectively restore, so that the quality hidden trouble cannot be eradicated. The data recording mode lacking in deformation compensation and a physical anchoring mechanism makes the system unable to maintain data consistency in multi-working-procedure circulation, resulting in low tracing precision and large error accumulation, and unable to meet engineering requirements of modern precision manufacturing. Disclosure of Invention The application aims to provide a multi-station quality data tracing method and system in a packaging pull line production process, which are used for solving the problems of poor quality data tracing precision and difficult tracing in the packaging production process in the prior art. According to the method, a two-dimensional coordinate system is established based on the length direction and the width direction of a raw material parent roll, anchor point marks carrying unique coding information are periodically implanted in the edge of the parent roll according to a preset physical interval, coordinate values of the anchor point marks in the two-dimensional coordinate system are recorded as reference positions, quality data of all the procedures are collected in real time in the production process, meanwhile, the running tension and the linear speed of the parent roll are obtained, the elastic deformation rate is calculated by combining the elastic modulus of the material, the transmission length is obtained by integrating the linear speed of the parent roll in time, dynamic compensation is conducted on the transmission length by utilizing the elastic deformation rate, the quality data at corresponding moments are mapped into the two-dimensional coordinate system to generate a parent roll quality fingerprint image, data of corresponding areas are intercepted from the parent roll quality fingerprint image according to the topological mapping relation, the data of the corresponding areas are generated, the mark on the child roll quality record is recognized in the process, the anchor point marks and the accumulated position of the anchor point marks is calculated in the process, and the accumulated error of the reference quality data is calibrated to the original quality record based on the reverse direction of the reference data, and accordingly the quality error of the parent roll is calibrated. According to the invention, the anchor point mark is implanted on the parent roll, the two-dimensional coordinate system is established, and the transmission length is dynamically compensated by combining the elastic deformation rate, so that the position drift error of the flexible material due to tension fluctuation is effectively eliminated. The data inheritance between the parent roll and the child roll is realized through the topological mapping relation, and the secondary calibration is carried out in the rewi