Slitter-winder and fiber web production line control system

Abstract

A system (50) for controlling performance of a slitter-winder (25) and/or a fiber web production line (100) has an advisor unit (34, 36, 37) with a processor and a memory including computer program code, configured to cause the advisor unit (34, 36,37) to generate and transmit signals as first control data to the slitter-winder (25) and/or as second control data to the fiber web production line (100) based on information data received from the slitter-winder (25) and the fiber web production line (100) to control performance of the slitter-winder (25) and/or the fiber web production line (100). Performance of a slitter-winder (25) and/or a fiber web production line is controlled by receiving information data from the slitter-winder and the fiber web production line (100), processing the received information data according to a predetermined configuration, based on the processed data; generating signals according to the predetermined configuration to control the performance.

Claims

1. A system for controlling performance of a slitter-winder and a fiber web production line, the system comprising: an advisor unit comprising at least one processor and at least one memory unit including computer program code; wherein the at least one memory unit and the computer program code are configured, with the at least one processor, to cause the advisor unit to generate and transmit signals comprising first control data to the slitter-winder and second control data to the fiber web production line based on first information data received from the slitter-winder and based on second information data received from the fiber web production line to control the performance of the slitter-winder and the fiber web production line; and wherein the advisor unit is configured to optimize running parameters of the fiber web production line and vibrations in the slitter-winder, and under the control of the advisor unit, the vibrations of the slitter-winder are minimized by adjustments to the fiber web production line and the slitter-winder.

2. The system of claim 1 wherein the advisor unit is configured to transmit the first control data to an information sharing unit for manual control of the performance of at least one of the slitter-winder and the fiber web production line.

3. The system of claim 1 wherein the advisor unit is configured to transmit the second control data to a control unit for automatic control of the performance of at least one of the slitter-winder and the fiber web production line.

4. The system of claim 1 wherein the information data received by the advisor unit comprises first measurement data received from measurement devices of the slitter-winder and second measurement data received from measurement devices of the fiber web production line.

5. The system of claim 4 wherein in the measurement devices of the slitter-winder are configured to measure at least one of diameter profile, diameters of a set of customer rolls, centricity of winding cores, and tension of the fiber web.

6. The system of claim 5 wherein the measurement devices of the fiber web production line are configured to measure at least one of moisture profile, tensile strength, bursting strength, basis weight profile and caliper profile of the fiber web.

7. The system of claim 4 wherein the measurement devices of the fiber web production line are configured to measure at least one of moisture profile, tensile strength, bursting strength, basis weight profile and caliper profile of the fiber web.

8. The system of claim 1 wherein signals of the first and second control data comprise instructions signal data sent to the fiber web production line to adjust at least one of the group of: tension, tensile strength, bursting strength, moisture profile, basis weight profile and caliper profile of the fiber web.

9. The system of claim 1 wherein at least one of the measurement devices is a measuring roll, in which the measurement is based on a pressure-sensitive film.

10. The system of claim 1 further comprising: measurement devices of the slitter-winder configured to measure at least one of diameter profile, diameters of a set of customer rolls, centricity of winding cores, and tension of the fiber web, wherein the measurements comprise the first information data; and measurement devices of the fiber web production line configured to measure at least one of moisture profile, tensile strength, bursting strength, basis weight profile and caliper profile of the fiber web, wherein the measurements comprise the second information data.

11. The system of claim 1 wherein the advisor unit is configured to adjust running parameters of the slitter-winder while winding a set of customer rolls.

12. A system for controlling performance of a slitter-winder and a fiber web production line, the system comprising: an advisor unit comprising at least one processor and at least one memory unit including computer program code; wherein the at least one memory unit and the computer program code are configured, with the at least one processor, to cause the advisor unit to generate and transmit signals comprising first control data to the slitter-winder and second control data to the fiber web production line based on first information data received from the slitter-winder and second information data received from the fiber web production line to control the performance of the slitter-winder and the fiber web production line, wherein information data received by the advisor unit comprises data from the group consisting of an operating model of the slitter-winder and an operating model of the fiber web production line based on first principles physical models; self-learning systems; neural networks; learning models; artificial intelligence; and digital twin-type models.

13. The system of claim 12 further comprising: measurement devices of the slitter-winder configured to measure at least one of diameter profile, diameters of a set of customer rolls, centricity of winding cores, and tension of the fiber web, wherein the measurements comprise the first information data; and measurement devices of the fiber web production line configured to measure at least one of moisture profile, tensile strength, bursting strength, basis weight profile and caliper profile of the fiber web wherein the measurements comprise the second information data.

14. The system of claim 12 wherein the advisor unit is configured to actively control running parameters of the fiber web production line effecting the properties of the fiber web including grammage, basis weight, tensile strength, bursting strength, moisture content, and caliper and to actively control running parameters of the slitter-winder including winding recipes, load of a rider roll, opening of carrier rolls, and running speed.

15. A system for controlling performance of a slitter winder and a fiber web production line, the system comprising: an advisor unit comprising at least one processor and at least one memory unit including computer program code; wherein the at least one memory unit and the computer program code are configured, with the at least one processor, to cause the advisor unit to generate and transmit signals comprising first control data to the slitter-winder and second control data to the fiber web production line based on first information data received from the slitter-winder and second information data received from the fiber web production line to control the performance of the slitter-winder and the fiber web production line; and wherein the advisor is configured to optimize the fiber web production profiles in the fiber web production line so a web tension in a cross-direction and winder set diameter profiles are optimal for the slitter-winder, wherein optimal is the roll diameters of the customer rolls of a set of customer rolls being wound is such that a rider roll in the slitter-winder keeps contact with the customer rolls of the set throughout most of building up of the customer rolls of the set.

16. The system of claim 15 further comprising: measurement devices of the slitter-winder configured to measure at least one of diameter profile, diameters of a set of customer rolls, centricity of winding cores, and tension of the fiber web, wherein the measurements comprise the first information data; and measurement devices of the fiber web production line configured to measure at least one of moisture profile, tensile strength, bursting strength, basis weight profile and caliper profile of the fiber web wherein the measurements comprise the second information data.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the following the invention is explained in detail with reference to the accompanying drawing to which the invention is not to be narrowly limited.

(2) In FIG. 1 is shown schematically an advantageous example of a part of an arrangement comprising a fiber web production line and a slitter-winder and a system of controlling performance of a slitter-winder and/or the fiber web production line for carrying out an advantageous example of a method of controlling performance of a slitter-winder and/or a fiber web production line.

(3) In FIG. 2 is shown a schematical example as a basic flowchart illustrating stages of an advantageous example of a system of controlling performance of a slitter-winder and/or a fiber web production line.

(4) During the course of the following description like numbers and signs will be used to identify like elements according to the different views which illustrate the invention and its advantageous examples. In the figures some repetitive reference signs have been omitted for clarity reasons.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

(5) In FIG. 1 is very schematically shown a fiber web production line 100, which in the shown example comprises a head box 11, a forming section 12, a press section 13, a drying section 14, a calender 15, a coating section 16 with drying equipment 17, a reel-up 18 and a parent roll storage 19. In the figure is also shown very schematically a slitter-winder 25 comprising an unwinding station 21 of a slitter-winder 25, a slitting section (not shown) of the slitter-winder 25, a winding section with a winder 22 of the slitter-winder 25. The slitter-winder is followed by a customer roll storage 23, as well as a packaging section 24. In the fiber web production line 100 there are also guide rolls 10, 20 for guiding and supporting the fiber web W and/or the fabric F supporting the web W. The fiber web W is typically supported by fabrics during forming, pressing and drying. The fiber web production line 100 may also comprise other elements, devices and sections known as such to one skilled in the art. For example, the fiber web production line may comprise an off-line coating section. Also, the fiber web production line 100 may comprise a pulp treatment section for treatment of pulp and/or re-cycled fibers for supplying pulp to the head box 11.

(6) The system 50 of the fiber web production line 100 for controlling performance of the slitter-winder 25 and/or the fiber web production line 100 comprises receiving measurement data from measurement devices 31 of the slitter-winder 25 and/or information data from a model of operating the slitter-winder 25 and from measurement devices 32 of the fiber web production line 100 and/or information data from a model of operating the fiber web production line 100. The received measurement and/or information data is transmitted to an advisor unit 34 via a data connection, combination and processing unit 37 thereof or via a connection from data connection, combination and processing unit 37. The advisor unit 34 may also receive data from other data sources 36 or via a connection from other data sources 36, in which advisor unit 34 instructions of controlling performance of the slitter-winder 25 and/or a fiber web production line 100 are calculated and prepared based on the data received as measurement results and/or from a model. The advisor unit 34 is configured to send the instructions to adjust least one of the running parameters of the fiber web production line 100 to control the performance of the slitter-winder 25 and/or the fiber web production line 100 and/or to adjust at least one of the running parameters of the slitter-winder 25 to control the performance of the slitter-winder 25 and/or the fiber web production line 100. The instructions are sent to an information sharing unit such as, a display monitor unit, for an operator to manually adjust at least one of the running parameters and/or to a control unit for automatically to adjust at least one of the running parameters. In the fiber web production line 100 with the method and the system of controlling performance of the slitter-winder 25 and/or the fiber web production line 100 the measurement devices 31 are configured to measure at least diameter profile and/or diameters of a set of customer rolls and/or centricity of winding cores. The measurement devices configured to measure the diameter profile and/or diameters of a set of customer rolls can be located in connection with the slitter-winder or in connection with a conveyor, which is configured to receive sets of finished customer rolls from the winder 22 of the slitter-winder 25.

(7) In FIG. 2 is shown a schematical example as a basic flowchart illustrating stages of a system 50 of controlling performance of a slitter-winder 25 and/or a fiber web production line 100. The system 50 comprises a data connection, combination and processing unit 37, which receives data from data sources of the fiber web production line 100 and from the slitter-winder 25 as well as from other data sources 36, for example from laboratory, analyzers and manufacturing execution system. The data comprises measurement results from measuring devices, signals from systems and sample taking stations. In the data connection, combination and processing unit 37 processed data is transmitted to an advisor unit 34, in which the data is optimized for the slitter-winder performance and/or the fiber web production line performance and the fiber web production line 100 and the slitter-winder 25 and/or the fiber web production line 100 receives the optimized data for controlling the performance of the slitter-winder 25 and/or the fiber web production line.

(8) The advisor unit 34 may also be configured to optimize running parameters of the fiber web production line 100 to so that measured vibrations of the slitter-winder 25 are minimized and/or that customer roll core eccentricity produced by the slitter winder 25 is minimized.

(9) In the description in the foregoing, although some functions have been described with reference to certain features and examples, those functions may be performable by other features and examples whether described or not. Although features have been described with reference to the certain examples, those features may also be present in other examples whether described or not.

(10) Above only some advantageous examples of the inventions have been described to which examples the invention is not to be narrowly limited and many modifications and alterations are possible within the invention.