Corrugated board system for producing corrugated board

• US 9,108,382 B2
• Filed: 06/27/2013
• Issued: 08/18/2015
• Est. Priority Date: 06/28/2012
• Status: Active Grant

• Current Assignee: BHS Corrugated Maschinen- und Anlagenbau GmbH (Bwv-Wellpappenmaschinen Vertriebs-GmbH)
• Original Assignee: BHS Corrugated Maschinen- und Anlagenbau GmbH (Bwv-Wellpappenmaschinen Vertriebs-GmbH)
• Inventors: Gnan, Alfons, Reich, Heribert, Kraus, Helmut, Bernreuter, Klaus
• Primary Examiner(s): Musser, Barbara J
• Application Number:
  US13/929,009
• Publication Number:
  US 20140000785A1
• Time in Patent Office: 782 Days
• Field of Search: 226/34, 226/42, 226/118.2, 226/1, 226/24, 242/417, 242/418, 242/418.1
• US Class Current: 1/1
• CPC Class Codes: B31F 1/20 Corrugating; Corrugating combined with laminating to other layers
• CPC Class Codes: B31F 1/2836 Guiding, e.g. edge alignment; Tensioning
• CPC Class Codes: B65H 23/188 in connection with running-web
• CPC Class Codes: B65H 2557/10 for signal transmission

Abstract

A corrugated board system comprises a first and a second material supply device for a first or second material web, a corrugated board production device, and a web tension measuring regulating arrangement between the corrugated board production device and the first material supply device. The arrangement comprises a web tension measuring regulating device with a web tension measuring mechanism and a first web tension regulating mechanism, and at least a second web tension regulating mechanism. The web tension measuring regulating device is arranged between the second web tension regulating mechanism and the corrugated board production device. The arrangement furthermore has an information processing unit, which receives web tension information from the web tension measuring mechanism and is configured so that to change the web tension up to a first web tension limit value, it sends web tension regulating signals to the first web tension regulating mechanism and to change the web tension beyond the first web tension limit value, it sends web tension regulating signals to the second web tension regulating mechanism.

Claims

1. A corrugated board system for producing corrugated board, the corrugated board system comprising:

a first material supply device for dispensing a first material web;

at least a second material supply device for dispensing at least a second material web;

a corrugated board production device for producing a corrugated board web lined on at least one side from the first material web and the at least second material web;

a web tension measuring regulating arrangement, which is arranged between the corrugated board production device and the first material supply device, wherein the web tension measuring regulating arrangement comprises a web tension measuring regulating device with a web tension measuring mechanism for measuring the web tension of the first material web and a first web tension regulating mechanism for regulating the web tension of the first material web, said web tension measuring regulating arrangement further comprising at a second web tension regulating mechanism to further regulate the web tension of the first material web, the web tension measuring regulating device being arranged between the second web tension regulating mechanism and the corrugated board production device, said web tension measuring regulating arrangement further comprising at least a third web tension regulating mechanism to further regulate the web tension of the first material web, wherein the at least third web tension regulating mechanism is arranged upstream of the second web tension regulating mechanism on the first material web, said web tension measuring regulating arrangement further comprising an information processing unit, which is connected to the web tension measuring regulating device in a data-transmitting manner, said information processing unit being connected to the second web tension regulating mechanism in a data-transmitting manner, said information processing unit being connected to the at least third web tension regulating mechanism in a data-transmitting manner, said information processing unit receiving web tension information referring to the first material web from the web tension measuring mechanism, said information processing unit being configured so that to change the web tension of the first material web up to a first web tension limit value, said information processing unit sends web tension regulating signals to the first web tension regulating mechanism to actuate the first web tension regulating mechanism, said information processing unit being configured so that to change the web tension of the first material web beyond the first web tension limit value, said information processing unit sends web tension regulating signals to the second web tension regulating mechanism to actuate the second web tension regulating mechanism, said information processing unit being configured so that to change the web tension of the first material web beyond a second web tension limit, said information processing unit sends web tension regulating signals to the at least third web tension regulating mechanism to actuate the third web tension regulating mechanism.

2. A corrugated board system according to claim 1, wherein at least one web tension regulating apparatus is provided at the first material supply device, wherein the at least one web tension regulating apparatus is connected to the information processing unit to change the web tension of the first material web at the first material supply device in a data-transmitting manner.

3. A corrugated board system according to claim 1, wherein at least one of the first web tension regulating mechanism and the second web tension regulating mechanism, comprises at least one of a braking means for increasing the web tension of the first material web and an acceleration means to reduce the web tension of the first material web.

4. A corrugated board system according to claim 3, wherein at least one of the braking means and the acceleration means is formed by a roller, which is in contact with the first material web and can be decelerated, accelerated as well as simultaneously be decelerated, and accelerated.

5. A corrugated board system according to claim 4, wherein the roller can be decelerated, accelerated as well as simultaneously be decelerated, and accelerated by a drive.

6. A corrugated board system according to claim 1, wherein the corrugated board production device has a fluting mechanism for fluting at least one of the first and the at least second material web and a connecting mechanism for the fixed flat connection of the first and the at least second material web to one another.

7. A corrugated board system according to claim 6, wherein the connecting mechanism has a gluing unit and a lining unit.

8. A corrugated board system according to claim 1, wherein the web tension measuring mechanism and the first web tension regulating mechanism form a unit.

9. A corrugated board system according to claim 1, wherein one or more of the first material supply device and the at least second material supply device is configured as a splice device.

10. A corrugated board system according to claim 1, wherein the first web tension regulating mechanism increases the web tension of the first material web only up to the first web tension limit value and the web tension of the first material web can be increased by the second web tension regulating mechanism beyond the first web tension limit value.

11. A corrugated board system according to claim 1, wherein the web tension of the first material web at the first material supply device is lower than at the corrugated board production device.

12. A corrugated board system according to claim 11, wherein the web tension of the first material web at the first material supply device is substantially lower than at the corrugated board production device.

13. A corrugated board system according to claim 11, wherein the web tension of the first material web at the first material supply device is greater than zero.

14. A corrugated board system according to claim 1, wherein upon an intentional increase of the web tension of the first material web, the second web tension limit value is greater than the first web tension limit value.

15. A corrugated board system according to claim 1, wherein upon a further reduction of the web tension of the first material web, the second web tension limit value is lower than the first web tension limit value.

16. A method for producing corrugated board, the method comprising the steps:

dispensing a first material web from a first material supply device;

dispensing at least a second material web from at least a second material supply device;

producing a corrugated board web lined at least on one side from the first material web and the at least second material web using a corrugated board production device;

providing a web tension measuring regulating arrangement, which is arranged between the corrugated board production device and the first material supply device, wherein the web tension measuring regulating arrangement measures and regulates the web tension of the first material web using a web tension measuring regulating device, which, comprises a web tension measuring mechanism and a first web tension regulating mechanism, and the web tension measuring regulating arrangement optionally further regulates the web tension of the first material web using a second web tension regulating mechanism, the web tension measuring regulating device being arranged between the second web tension regulating mechanism and the corrugated board production device, the web tension measuring regulating arrangement having at least a third web tension regulating mechanism to further regulate the web tension of the first material web, wherein the at least third web tension regulating mechanism is arranged upstream of the second web tension regulating mechanism on the first material web; and

providing an information processing unit, which is connected to the web tension measuring regulating device in a data-transmitting manner, the information processing unit being connected to the second web tension regulating mechanism in a data-transmitting manner, the information processing unit being connected to the at least third web tension regulating mechanism in a data-transmitting manner, the information processing unit receiving web tension information referring to the first material web from the web tension measuring mechanism, the information processing unit sending web tension regulating signals to change the web tension of the first material web up to a first web tension limit value to the first web tension regulating mechanism to actuate the first web tension regulating mechanism, the information processing unit sending web tension regulating signals to further change the web tension of the first material web beyond the first web tension limit value to the second web tension regulating mechanism to actuate the second web tension regulating mechanism, the information processing unit being configured so that to change the web tension of the first material web beyond a second web tension limit value, the information processing unit sends web tension regulating signals to the at least third web tension regulating mechanism to actuate the third web tension regulating mechanism.

17. A method according to claim 16, wherein the first web tension regulating mechanism changes the web tension of the first material web substantially up to its maximum regulating power and only then is the at least second web tension regulating mechanism optionally used to further change the web tension of the first material web.

18. A method according to claim 16, wherein the second web tension regulating mechanism arranged upstream of the first web tension regulating mechanism is used when a further web tension change of the first material web is impossible by means of the first web tension regulating mechanism.

19. A method according to claim 16, wherein the web tension of the first material web is regulated so that when a desired web tension is input at the inlet of the corrugated board production device, the web tension at the outlet of the first material supply device is minimal, but greater than zero.

20. A method according to claim 16, wherein the web tension of the first material web between the first material supply device and the corrugated board production device is regulated so that the web tension of the first material web remains the same in portions and changes in a step-like manner at the first web tension regulating mechanism, when the first web tension regulating mechanism is in use.

21. A method according to claim 16, wherein the web tension of the first material web between the first material supply device and the corrugated board production device is regulated so that the web tension of the first material web remains the same in portions and changes in a step-like manner at the second web tension regulating mechanism, when the second web tension regulating mechanism is in use.

22. A method according to claim 16, wherein the first web tension regulating mechanism increases the web tension of the first material web when the web tension of the first material web measured by the web tension measuring mechanism is lower than a web tension desired value of the first material web.

23. A method according to claim 16, wherein the first web tension regulating mechanism reduces the web tension of the first material web, when the web tension of the first material web measured by the web tension measuring mechanism is greater than a web tension desired value of the first material web.

24. A method according to claim 16, wherein the at least second web tension regulating mechanism is only actuated when the web tension of the first material web measured by the web tension measuring mechanism differs from a web tension desired value of the first material web and the first web tension regulating mechanism is adjusted to maximum web tension change.

25. A method according to claim 16, wherein upon an intentional increase in the web tension of the first material web, the second web tension limit value is greater than the first web tension limit value.

26. A method according to claim 16, wherein upon a further reduction in the web tension of the first material web, the second web tension limit value is lower than the first web tension limit value.

27. A method according to claim 16, wherein the second web tension regulating mechanism changes the web tension of the first material web substantially up to its maximum regulating power and only then is the at least third web tension regulating mechanism optionally used to further change the web tension of the first material web.

28. A method according to claim 16, wherein the at least third web tension regulating mechanism arranged upstream of the second web tension regulating mechanism is used when a further web tension change of the first material web by the second web tension regulating mechanism is impossible.

29. A method according to claim 16, wherein the web tension of the first material web between the first material supply device and the corrugated board production device is regulated so that the web tension of the first material web remains the same in portions and changes in a step-like manner at the at least third web tension regulating mechanism when the at least third web tension regulating mechanism is in use.

30. A method according to claim 16, wherein the at least third web tension regulating mechanism is only actuated when the web tension of the first material web measured by the web tension measuring mechanism differs from a web tension desired value of the first material web and the second web tension regulating mechanism is adjusted to the maximum web tension change.

31. A corrugated board system for producing corrugated board, the corrugated board system comprising:

a first material supply device for dispensing a first material web;

a second material supply device for dispensing at least a second material web;

a corrugated board production device for producing a corrugated board web lined on at least one side from the first material web and the at least second material web;

a web tension measuring regulating arrangement arranged between the corrugated board production device and the first material supply device, the web tension measuring regulating arrangement comprising a web tension measuring regulating device, the web tension measuring regulating device comprising a web tension measuring mechanism for measuring the web tension of the first material web and the web tension measuring regulating device comprising a first web tension regulating mechanism, a second web tension regulating mechanism and a third web tension regulating mechanism for regulating the web tension of the first material web, said web tension regulating mechanism being arranged between the second web tension regulating mechanism and the corrugated board production device, the third web tension regulating mechanism being arranged upstream of the second web tension regulating mechanism with respect to a traveling direction of the first material web, said web tension measuring regulating arrangement further comprising an information processing unit, said information processing unit being operatively connected to the web tension measuring regulating device, the second web tension regulating mechanism and the third web tension regulating mechanism, said information processing unit receiving web tension data corresponding to the first material web from the web tension measuring mechanism, said information processing unit providing web tension regulating signals to the first web tension regulating mechanism as input to actuate the first web tension regulating mechanism to change the web tension of the first material web up to a first web tension limit value, said information processing unit providing web tension controlling signals to the second web tension regulating mechanism as input to actuate the second web tension regulating mechanism to change the web tension of the first material web beyond the first web tension limit value, said information processing unit providing web tension controlling signals to the at least third web tension regulating mechanism as input to actuate the third web tension regulating mechanism to change the web tension of the first material web beyond a second web tension limit.