Rewinder winding methods and apparatus

Patent metadata

Field	Value
Publication number	US-11261045-B2
Application number	US-202016804311-A
Country	US
Kind code	B2
Filing date	Feb 28, 2020
Priority date	Mar 1, 2019
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A converting line includes a rewinding machine for winding web material into a log. For time points during a time period of the log wind cycle, predictive information representative of a log to be wound is generated and stored in a memory of a control of the rewinding machine. An image capture device is enabled to capture a plurality of images of the log being wound in the winding nest at the plurality of corresponding time points during the time period. Log image capture information is generated based upon the plurality of captured images and corresponding time points during the time period. The log image capture information is compared with the generated predictive log image information to determine a difference in log image. Revised predictive log image information is generated based at least in part upon a difference in the log image capture information relative to predictive log image information.

First claim

What is claimed is:

1. A method of controlling a converting line, wherein the converting line includes a rewinding machine configured to wind a log of convolutely wound web material in a winding nest of the rewinding machine, the method comprising:
for a time period during a wind cycle, generating predictive information representative of and related to an image of a log to be wound in the winding nest, wherein the predictive log image related information comprises information corresponding to at least one of: (a) a plurality of positions of the log to be wound in the winding nest at a plurality of corresponding time points during the time period, (b) a plurality of geometries of the log to be wound in the winding nest at a plurality of corresponding time points during the time period, (c) a plurality of diameters of a log to be wound in the winding nest at a plurality of corresponding time points during the time period, (d) a plurality of vibration frequencies of the log to be wound in the winding nest at a plurality of corresponding time points during the time period, and (e) a plurality of vibration amplitudes of the log to be wound in the winding nest at a plurality of corresponding time points during the time period;
storing a plurality of data structures in a memory of a controller of a control system associated with the rewinding machine, wherein the data structures comprise a plurality of data items associated together that are representative of the generated predictive log image related information;
enabling an image capture device to capture a plurality of images of a log being wound in the winding nest at the plurality of corresponding time points during the time period;
generating log image capture information based upon the plurality of captured images and corresponding time points during the time period, wherein the log image capture information includes at least one of captured log position information, captured log geometry information, captured log diameter information, captured log vibration frequency information, and captured log vibration amplitude information;
comparing the log image capture information with the generated predictive log image related information to determine a difference in log image;
generating revised predictive log image related information based at least in part upon a difference in the log image capture information relative to predictive log image related information; and
enabling the controller to generate signals for controlling the converting line based at least in part upon the revised predictive log image related information for subsequent winding of another log to be processed in the converting line.

2. The method of claim 1 further comprising:
generating predictive information representative of a caliper of the web material of the log to be wound in the winding nest, wherein the predictive web caliper information comprises a plurality of measurements of web caliper of the log to be wound in the winding nest at the plurality of corresponding time points during the time period;
structuring the plurality of data structures stored in the memory of the controller of the control system for the converting line with data representative of the generated predictive web caliper information;
measuring web caliper to generate measured web caliper information at the corresponding plurality of time points during the time period;
comparing the measured web caliper information with the generated predictive web caliper information to determine a difference in web caliper;
generating revised predictive log web caliper information based at least in part upon a difference in the measured web caliper information relative to predictive web caliper information; and
enabling the controller to generate signals for controlling the converting line based at least in part upon the revised predictive web caliper information for subsequent winding of another log to be processed in the converting line.

3. The method of claim 1 further comprising:
generating predictive information representative of an amount of the web material to be wound around the log to be wound in the winding nest, wherein the predictive wound web amount information comprises a plurality of measurements of amounts of the web to be wound around the log to be wound in the winding nest at the plurality of corresponding time points during the time period;
structuring the plurality of data structures stored in the memory of the controller of the control system for the converting line with data representative of the generated predictive wound web amount information;
measuring amounts of web wound around the log to generate measured wound web amount information at the corresponding plurality of time points during the time period;
comparing the measured wound web amount information with the generated predictive wound web amount information to determine a difference in wound web amount;
generating revised predictive wound web amount information based at least in part upon a difference in the measured wound web amount information relative to predictive wound web amount information; and
enabling the controller to generate signals for controlling the converting line based at least in part upon the revised predictive wound web amount information for subsequent winding of another log to be processed in the converting line.

4. The method of claim 1 further comprising:
generating predictive information representative of a speed of the web material of the log to be wound in the winding nest, wherein the predictive web speed information comprises a plurality of measurements of web speed for the log to be wound in the winding nest at the plurality of corresponding time points during the time period;
structuring the plurality of data structures stored in the memory of the controller of the control system for the converting line with data representative of the generated predictive web speed information;
measuring web speed to generate measured web speed information at the corresponding plurality of time points during the time period;
comparing the measured web speed information with the generated predictive web speed information to determine a difference in web speed;
generating revised predictive web speed information based at least in part upon a difference in the measured web speed information relative to predictive web speed information; and
enabling the controller to generate signals for controlling the converting line based at least in part upon the revised predictive web speed information for subsequent winding of another log to be processed in the converting line.

5. The method of claim 1 further comprising:
generating predictive information representative of a rotational speed of a log to be wound in the winding nest, wherein the predictive log rotational speed information comprises a plurality of measurements of rotational speed of the log to be wound in the winding nest at the plurality of corresponding time points during the time period;
structuring the plurality of data structures stored in the memory of the controller of the control system for the converting line with data representative of the generated predictive log rotational speed information;
measuring log rotational speed to generate measured log rotational speed information at the corresponding plurality of time points during the time period;
comparing the measured log rotational speed with the generated predictive log rotational speed information to determine a difference in log rotational speed;
generating revised predictive log rotational speed information based at least in part upon a difference in the measured log rotational speed information relative to predictive log rotational speed information; and
enabling the controller to generate sign

Assignees

• Paper Converting Machine Co

Inventors

• Spinelli Stefano

Classifications

• G05B13/026

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• G05B13/021

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• B65H2553/42

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