Method for Regulating the Processing of a Material Web on the Basis of Register Marks, and Apparatus for Carrying Out the Method

Patent metadata

Field	Value
Publication number	US-2019002227-A1
Application number	US-201616064293-A
Country	US
Kind code	A1
Filing date	Nov 15, 2016
Priority date	Dec 21, 2015
Publication date	Jan 3, 2019
Grant date	—

Abstract

A method for regulating the processing of a material web that has register marks and is driven via at least one drive roller is described, in which the register marks are guided past at least one sensor that captures register marks and an evaluation device determines the deviation of an actual position, corresponding to the capturing event, of at least one processing tool from a predetermined position of the at least one processing tool, and in which a regulating device uses the deviation between the actual position and the predetermined position of the at least one processing tool to regulate the actual processing position of the at least one processing tool. The evaluation device determines the actual distance between successive register marks with regard to the measurement system of the at least one drive roller and correlates this with an expected distance between the register marks with regard to the measurement system of the at least one drive roller.

First claim

1 . A method for regulating a processing of a material web having register marks which are guided past a processing device for the purpose of processing, the method comprising:
driving the material web via at least one drive roller; guiding the material web past at least one sensor that captures the register marks: determining a deviation of an actual position with an evaluation device, corresponding to a capturing event of a register mark by the at least one sensor of at least one processing tool of the processing device from a predetermined position of the at least one processing tool for the capturing event; using the deviation with a regulating device between the actual position and the predetermined position of the at least one processing tool determined by the evaluation device of the at least one processing tool to regulate an actual processing position; using successive capturing events of register marks by the at least one sensor with the evaluation device to determine an actual distance of successive register marks in relation to a measurement system of the at least one drive roller, and correlating the actual distance with an expected distance of the register marks with regard to the measurement system of the at least one drive roller; determining a pilot-control value from the correlation between the actual distance and the expected distance of the register marks; and adjusting speed of the at least one processing tool as a function of the pilot-control value with a control device.

2 . The method according to claim 1 , wherein the evaluation device determines the pilot-control value as a function of the path velocity of the material web in a region of the at least one sensor in relation to the measurement system of the at least one drive roller.

3 . The method according to claim 1 , wherein the at least one processing tool is motorized.

4 . The method according to claim 1 , wherein the actual processing position of the at least one processing tool is regulated by a brief acceleration and/or deceleration of the speed of the processing tool.

5 . The method according to claim 1 , wherein the processing position of the at least one processing tool is regulated by a control loop through brief accelerations or brakings of the at least one processing tool moving with a predetermined speed, and/or wherein the predetermined speed of the at least one processing tool is increased or decreased via a pilot control.

6 . The method according to claim 1 , wherein as the at least one processing tool, a cutting tool, a perforation tool, an embossing tool, a folding tool, a stamping tool and/or a printing tool is used.

7 . The method according to claim 1 , wherein the material web comprises a packaging material web, a packaging material laminate, and/or a board/plastic packaging material laminate.

8 . The method according to claim 1 , wherein the register marks integrated into a decoration or provided alongside a decoration print marks, embossings, folds, stampings and/or material differences are used.

9 . The method according to claim 1 , wherein a release device or door control uses the capturing events of the register marks by the at least one sensor to specify a time-related and/or a distance-related window for a following expected capturing event, in which the capturing event of a register mark by the at least one sensor is captured, relayed and/or processed at the evaluation device-.

10 . A device for the processing of a material web comprising:
a processing device having at least one processing tool; at least one drive roller for driving the material web; at least one sensor for capturing register marks of the material web guided past the sensor; an evaluation device for determining a deviation of an actual position, corresponding to the capturing event of the register mark by the at least one sensor of the at least one processing tool of the processing device from the predetermined position of the at least one processing tool for the capturing event; a regulating device for regulating the actual processing position of the at least one processing tool using the deviation between the actual position and the predetermined position of the at least one processing tool determined by the evaluation device, wherein the evaluation device is configured to determine a pilot-control value as a function of the path velocity of the material web in an area of the at least one sensor using successive capturing events of register marks by the at least one sensor, wherein the pilot-control value is determined on the basis of the correlation between the actual distance of successive register marks in relation to the measurement system of the at least one drive roller, and an expected distance of the register marks in relation to the measurement system of the at least one drive roller; and a control device for adjusting the speed of the at least one processing tool as a function of the pilot-control value.

11 . The device according to claim 10 , wherein the at least one processing tool is motorized.

12 . The device according to claim 10 , wherein a roller sensor is provided for capturing a parameter dependent upon the measurement system of the at least one drive roller.

13 . The device according to claim 10 , wherein the processing tool is associated with a position sensor.

14 . The device according to claim 10 , wherein the at least one processing tool is a cutting tool, a perforation tool, an embossing tool, a stamping tool and/or a printing tool.

15 . The method according to claim 3 , wherein the at least one processing tool is rotated about an axis, parallel to the material web and perpendicular to the transport direction of the material web in each case in an area of the processing device.

16 . The device according to claim 11 , wherein the at least one processing tool rotates about an axis of rotation, parallel to the material web and perpendicular to the transport direction of the material web of the processing device.

17 . The device according to claim 14 , wherein the material web comprises a packing material web, a packaging material laminate, and/or a board/plastic packaging material laminate.

18 . The device according to claim 17 , wherein the register marks are print marks, embossings, perforations, foldings, punchings, or material differences integrated into a decoration or alongside a decoration.

19 . The method according to claim 1 , wherein the measurement system of the at least one drive roller comprises an angular difference of the drive roller and/or a circumferential difference of the drive roller.

20 . The device according to claim 12 , wherein the roller sensor is configured to capture an angular difference of the drive roller and/or a circumferential difference of the drive roller.

Assignees

• Sig Technology Ag

Inventors

• Zell Uwe

Classifications

• B65H2511/512

  Marks, e.g. invisible to the human eye; Patterns · CPC title

• B65H2553/40

  using optical, e.g. photographic, elements · CPC title

• B65H2801/81

  Packaging machines · CPC title

• B65H2557/264

  with key characteristics based on closed loop control · CPC title

• B65H2511/11

  Length · CPC title