ES3040201T3 - Winding method and system - Google Patents

Abstract

The present invention relates to a method (100) and a system (1) for winding a continuously produced metal strip (2). The metal strip (2) is guided (S1) on a guide roller (11) of a pair of guide rollers (10), located in a first roller position (P1), along a first conveying path (22) to a first coil (20) and is cut (S3a, S4b) upstream of the pair of guide rollers (10). Subsequently, the guide roller (11) of the pair of guide rollers (10) is repositioned (S3b, S4a) to a second roller position (P2), in which the metal strip (2) is guided (S5a, S5b) on the guide roller (11) along a second conveying path (32) to at least a second coil (30). According to the invention, the repositioning of the guide roller (11) takes place depending on the thickness of the metal strip (2) and/or the transport speed of the metal strip (2), either before or after the metal strip (2) is cut.

Description

DESCRIPTION

Winding procedure and system

Field of technology

The present invention relates to a method and a system for winding a continuously manufactured metal strip.

State of the art

As a particularly efficient process for manufacturing thin metal strips, so-called "endless strip production" (ESP) has been established in a combined casting and rolling facility. A continuously cast metal strip is rolled directly behind a casting unit to the desired strip thickness. A strip manufactured in this way is typically divided for storage and transport, and the resulting strip sections are wound onto coils (often called "down coilers") into metal bundles. To maintain continuous production of the metal strip, several coils are available, to which strip sections can be optionally supplied.

If a new section of web is to be supplied to another reel, during continuous operation a movable guide roller from a pair of guide rollers arranged immediately before the currently active reel can be moved so that the new section of web is conveyed past this reel to the other reel.

However, in the manufacture of thick metal strips with a thickness of, for example, more than 6–13 mm, such a method is no longer applicable. In conventional casting and rolling mills, the movement of the guide roller leads to contact between the thick metal strip and the wall of the guide box, which guides the still-active coil. Therefore, thick metal strips, particularly in conventional hot rolling mills without a continuous roll, are generally manufactured so that the guidance of the metal strip sections to different coils is achieved via a switchable diverter instead of the movement of the guide roller.

According to document DE 10162433 A1, which forms the basis for the preamble of claims 1 and 10, for maintaining a traction force of the band before at least one winding coil, it is known to provide at least two adjustable drive rollers, so that by adjusting the drive rollers at least two different directions of advance of the metal band can be predetermined.

Document KR 2015 0073016 A discloses a downward locking roller provided between a material distributor and a coil. A clamping roller, subsequently arranged between the material distributor and the coil, and a side guide are not required.

Document DE 19620696 A1 refers to the allocation of individual batches of rolled material to the respective coils and proposes subordinating a controller to a flying shear, whose rollers can be moved in such a way that the plane formed through the two axes of the rollers can be pivoted from an essentially vertical position in such a way that a normal lying in this plane pivots in the direction of the first of the subordinate coils.

Document KR 100470642 B1 relates to the guiding of the front and rear ends of a strip manufactured in a steel mill using a plurality of clamping coils. In this respect, a strip guide roller and a flex roller are provided, which can be moved above a deflection roller in the circumferential direction of the deflection roller.

US document 3818737 A states that, prior to the division of a belt, it is known to rotate its belt guiding element around an axis, so that a clamping roller presses the belt onto a deflector roller, and to align a belt guide on a common tangent of a winding drum and the deflector roller.

Summary of the invention

Given this background, one objective of the present invention is to specify an improved procedure and system for winding metal bands, in particular to allow switching between two coils in continuous operation even with thick metal bands.

This objective is achieved by means of a procedure and a system for winding a continuously manufactured metal strip according to the independent claims.

Preferred embodiments of the invention are the subject of the dependent claims and the following description.

In a method for winding a continuously manufactured metal strip according to a first aspect of the invention, a metal strip is guided by a guide roller of a pair of guide rollers positioned in a first roller position along a first conveying path to a first reel and is split upstream of the guide roller pair. Furthermore, the guide roller of the guide roller pair is repositioned in a second roller position, where the metal strip is guided by the guide roller along a second conveying path to at least a second reel. According to the invention, the repositioning of the guide roller is performed based on the thickness of the metal strip and/or the conveying speed of the metal strip, either temporally before or after the splitting of the metal strip.

Upstream, in the sense of the present invention, should preferably be understood as "ahead" with respect to a direction of transport. If, for example, a dividing device is provided, which is arranged upstream of the pair of guide rollers, then a section of metal strip passes first through the dividing device before reaching the pair of guide rollers.

One aspect of the invention is based on the approach of displacing a repositionable guide roller from a pair of guide rollers at a moment that depends on the thickness and/or transport speed of a metal strip to be wound. The moment is conveniently adjusted temporarily to a point where the metal strip splits. The moment can be selected such that even in the case of thick metal strips with a thickness of 6-13 mm or more, no unwanted damage to the metal strip and/or a component of the installation occurs, for example, due to contact of the metal strip with a component of the reel feed or a reel box.

The moment when the guide roller, for example, moves from a first roller position to a second roller position, may be temporarily before or after the moment the metal strip is split. Therefore, it is preferable to reposition the guide roller during the processing of a thick metal strip only after the strip has been split. Splitting the metal strip can create a gap between the two strips formed during the splitting process. If the gap is large enough, the guide roller can be repositioned as the gap passes through the pair of guide rollers. In this case, the pair of guide rollers does not perform any guiding function during the guide roller's repositioning, and unwanted contact between the (thick) metal strip passing through the guide roller during normal operation and a component of the reel assembly, particularly the guide housing, can be avoided.

In this respect, the size of the gap that can be created when the metal strip is divided is primarily related to the conveying speed of the strip. Essentially, the lower the conveying speed, the larger the gap that can be created. Since the volume flow rate remains constant in a continuous casting process, the conveying speed usually depends on the thickness of the metal strip. As a result, the gap in a thick metal strip can be large enough to allow the guide roller to be repositioned in a "non-contact" state.

Conversely, when processing thin metal strips conveyed at high speed, it is preferable to reposition the guide roller before the strip is split. For thin metal strips with a thickness of, for example, less than 6–13 mm, there is no risk of contact with any component of the machine due to the movement of the guide roller.

The following describes preferred embodiments of the invention and their improvements. These embodiments may be combined arbitrarily with each other, as well as with the aspects of the invention described below, to the extent that this is not expressly excluded.

If the guide roller is temporarily repositioned only after the metal strip is split, as previously described, it is preferable that the guide roller no longer comes into contact with the metal strip during repositioning. Therefore, in this case, the guide roller is preferably repositioned at a specific time interval relative to the splitting of the metal strip. For example, a predetermined waiting time can be maintained from the moment the metal strip is split before the guide roller is repositioned. The actual interval or predetermined waiting time conveniently depends on the thickness of the metal strip and/or the conveying speed of the metal strip. The actual interval or waiting time can correspond exactly to the time required for the gap between the two metal strip ends created during splitting to reach the pair of guide rollers.

The decision of whether the guide roller should be temporarily repositioned before or after the metal strip is split depends on whether the gap between the ends of the metal strip is sufficient to reposition the guide roller. Therefore, it is preferable to check if the travel time required to reposition the guide roller is longer than the period during which the pair of guide rollers does not guide the metal strip after splitting—that is, is "out of contact." Based on the result of this test, the guide roller is then repositioned either before or after the metal strip is split.

If, for example, the metal strip is divided into a front section of metal strip, which is wound with the first coil, and a back section of metal strip, which is wound with the second coil, the test can be reliably carried out as follows:

The travel time required to reposition the guide roller is compared to the difference between a first time period and a second time period. The first time period is conveniently defined by the splitting of the metal strip, on the one hand, and the arrival of a head end of the metal strip section following the pair of guide rollers, on the other. The second time period is conveniently defined by the splitting of the metal strip, on the one hand, and the exit of a tail end of the metal strip section following the pair of guide rollers, on the other. Therefore, the difference between the first and second time periods indicates the period of time during which no metal strip is traveling over the guide roller.

If the test shows that the difference between the first and second time periods is less than the travel time, the guide roller is conveniently repositioned before the metal strip is split. Conversely, if the test shows that the difference between the first and second time periods is greater than the travel time, the guide roller can also be repositioned after the metal strip is split without interrupting the operation of the machine. Conducting a test to determine whether the guide roller should be temporarily repositioned before or after the metal strip is split allows for flexible operation of the machine with a wide range of strip thicknesses.

Alternatively to testing, the decision of whether to temporarily reposition the guide roller before or after splitting the metal strip can also be made easily using a reference table, i.e., a so-called "lookup table." For example, such a reference table might indicate at what strip thicknesses and/or conveyor speeds repositioning should be performed before splitting and at what strip thicknesses and/or conveyor speeds repositioning should be performed after splitting the metal strip.

The web thickness and/or conveying speed can be calculated, for example, using an automation unit, such as in the preliminary electrical and automation (EA) calculations for configuring the system components. Alternatively, these parameters can also be measured using a sensor unit, for example, with one or more sensors in a measuring cabinet.

Of course, the belt thickness and/or transport speed thus determined can also be used as a basis for the test described above, in particular to determine the first and/or second time period.

To allow sufficient time for repositioning the guide roller, particularly when processing thick metal strips, the conveyor speed is preferably increased on the first conveyor path after the strip is split. This allows the gap created during the split between the preceding and following sections to be of a predetermined size, specifically a minimum size. Therefore, this increased conveyor speed is particularly advantageous if the guide roller is only repositioned after the strip is split. Conveniently, the increased conveyor speed on the first path is accompanied by an increased winding speed of the first coil. Specifically, the increased conveyor speed on the first path can be achieved by increasing the winding speed of the first coil. This allows the preceding section of the strip to move faster than the following section, and the gap created during the split can be enlarged, thus providing more time for the guide roller to reposition.

The winding process according to the invention can be advantageously used with a wide range of thicknesses. For example, metal strips with a thickness between 0.5 mm and 30 mm can be wound without problems. Therefore, it is advantageous that, as part of the process, the metal strip is manufactured in a continuous process through a combined casting and rolling installation, i.e., within an ESP (Electronic Spindle Molding System), so that the metal strip has a thickness of at least 0.5 mm, preferably at least 0.8 mm, and/or up to 25.4 mm and more, preferably up to 30 mm and more, when it reaches the pair of guide rollers.

If the metal strip is, for example, 6 mm thick or less, the guide roller can be temporarily repositioned before splitting. As a result, the conventional winding procedure or a standard winding agent change can be used for strips up to, for example, 6 mm thick. However, if the metal strip is, for example, 13 mm thick or more, it is preferable to reposition the guide roller only after splitting the strip. This helps prevent mechanical damage to the metal strip and/or a component of the system, particularly a reel feeder or reel box. Specifically, for strips as thin as, for example, 6 mm, it may be possible to temporarily reposition the roller after splitting. Conversely, for strips as thick as, for example, 10–13 mm, it may be necessary to temporarily reposition the roller after splitting.

The preferred time for repositioning the guide roller may depend on the system design, particularly the coil design, or on the system's operation. Specifically, the threshold for a given web thickness, beyond which temporary repositioning of the guide roller after web splitting is possible and/or necessary, may depend on the casting or conveying speed, the travel distance of an actuator used to reposition the guide roller, and/or the actuator's travel speed.

A system for winding a continuously manufactured metal strip according to a second aspect of the invention comprises: (i) a pair of guide rollers with a repositionable guide roller; (ii) a first reel disposed downstream of the pair of guide rollers; (iii) at least one second reel disposed downstream of the first reel; (iv) at least one splitting device disposed upstream of the pair of guide rollers for splitting the metal strip; and (v) a control device designed to cause the guide roller to reposition itself from a first roller position to a second roller position according to a thickness of the metal strip and/or a conveying speed of the metal strip temporarily before or after the metal strip is split by the splitting device. In the first roller position, the metal strip can be guided along a first conveying path to the first reel. In the second roller position, the metal strip can be guided along a second conveying path to at least one second reel.

A winding system of this type can be used universally for continuously manufactured metal strips of varying thicknesses and/or associated conveying speeds. Specifically, both very thin metal strips, for example, with a thickness of approximately 1 mm or less, and very thick metal strips, for example, with a thickness of approximately 20 mm or more, can be wound continuously. Consequently, winding of even thicker metal strips can continue without interrupting the system's operation, even on a second reel, once the metal bundle on the first reel has reached its predetermined size.

Preferably, the system includes an actuator for repositioning the guide roller. This actuator moves the guide roller from the first to the second roller position and/or from the second to the first roller position. The control device is therefore designed to send a corresponding drive signal to the actuator. Preferably, the control device, using its corresponding control logic, determines, based on the web thickness and/or conveying speed, whether the drive signal is sent before or after the metal strip is split. The web thickness and/or conveying speed may be determined by the control device itself, for example, if the control device is part of an automation unit. Alternatively, the control device may access sensor data characterizing the web thickness and/or conveying speed, which may be provided by a sensor unit.

The control device may be configured with hardware and/or software technology. In particular, the control device may include a processing unit connected by data or signals, preferably with a storage system and/or bus. For example, the control device may include a microprocessor unit (CPU) or a module thereof and/or one or more programs or program modules. The control device may be configured to process commands implemented as a program stored in a storage system, to detect input signals from a data bus, and/or to output signals to a data bus. A storage system may include one or more storage media, particularly different types, such as optical, magnetic, solid-state, and/or other non-volatile media. The program may be configured to embody or be capable of performing the procedures described herein, so that the control device can execute the steps of these procedures and thereby reposition the guide roller specifically before or after the metal strip is split.

Brief description of the drawings

The properties, characteristics, and advantages of this invention described above, as well as the manner in which they are achieved, become clearer and more understandable in relation to the following description of embodiments, which will be explained in more detail in conjunction with the drawings. In this regard, they show, at least in part schematically:

FIG. 1 an example of a system for winding a continuously manufactured metal strip;

FIG. 2 a first roller position and a second roller position of a guide roller;

FIG. 3 an example of a split metal strip with a gap formed by increasing the winding speed of a previous metal strip section; and

FIG. 4 An example of a procedure for winding a metal band.

Where appropriate, the same reference numbers are used in the figures for the same elements of the invention or corresponding elements.

Description of ways of implementation

FIG. 1 shows an example of a system 1 for winding a continuously manufactured metal strip 2 with a pair of guide rollers 10 with a repositionable guide roller 11 and a support roller 12, a first coil 20, a second coil 30, a splitting device 40 for splitting the metal strip 2, a control device 50, a sensor unit 60 and an actuator 70 for repositioning the guide roller 11. The control device 50 is conveniently connected by data or signals to the splitting device 40, the sensor unit 60 and the actuator 70.

System 1 may be part of a composite casting and rolling installation, which is designed for so-called "endless strip production" (ESP), i.e., for the continuous manufacture of the metal strip 2. In addition to a casting installation (not shown), such a composite casting and rolling installation also conveniently comprises one or more rolling stations (not shown), where the cast metal bar is rolled into the metal strip 2.

System 1, including the installation comprising casting and rolling, conveniently includes means not shown for transporting the metal strip 2. These transport means may include, for example, driven transport rollers. The coils 20, 30 may also be at least part of these transport means, where the metal strip 2 is conveyed by winding onto the corresponding coil 20, 30.

The conveying means are conveniently designed to transport the metal strip 2 along a conveying direction 3. In the example shown, this conveying direction 3 runs at least essentially horizontally. With respect to the conveying direction 3, the first reel 20 is arranged downstream of the pair of guide rollers 10, and the second reel 30 is arranged downstream of the first reel 20, so that the pair of guide rollers 10 can optionally guide the metal strip 2 to either the first reel 20 or the second reel 30. Optionally, at least one more reel may also be provided downstream of the second reel 30. The splitting device 40 is arranged upstream of the pair of guide rollers 10.

In the example shown, the first coil 20 is arranged below the pair of guide rollers 10, so that the metal strip 2 travels through the guide roller 11 arranged below the metal strip 2 downwards to a guide box 21 leading to the first coil 20. The path of the metal strip 2 between the guide roller 11 and the first coil 20 defines a first transport path 22, which is indicated in FIG. 1 as a dotted oval.

Basically, the first coil 20 could also be arranged above the pair of guide rollers 10. In this case, the metal strip 2 would travel through the guide roller 11 arranged above the metal strip 2 along the first conveyor path 22 upwards to the first coil 20.

In the example shown, the guide box 21 consists of a first guide element 23, for example, a weir or a guide table, and a second guide element 24, which can optionally also be configured in a movable way, for example, as a diverter.

As previously indicated, the pair of guide rollers 10 can also guide the metal strip 2 beyond the first reel 20 to the second reel 30. In this respect, the metal strip 2 is conveyed through the second guide element 24, which conveniently has several transport rollers 25 on its upper side. In this case, the second guide element 24 supports the metal strip 2 during its transport to the second reel 30. The path of the metal strip 2 through the second guide element 24 is shown dashed in Figure 1 and defines a second transport path 32.

51 The pair of guide rollers 10 guides the metal strip 2 towards the first or second reel 20, 30, determined by the positioning of the guide roller 11, in particular relative to the support roller 12, when a head end of the metal strip 2, i.e., the beginning of the strip of the metal strip 2, reaches the pair of guide rollers 10. If the guide roller 11 is located upstream with respect to the transport direction 3 with respect to the support roller 12, i.e., if the axis 11a of the guide roller 11 is arranged upstream with respect to the axis 12a of the support roller 12, the incoming head end of the metal strip 2 is directed towards the first transport path 22. If the guide roller 11 and the support roller 12 are located at the same height with respect to the transport direction 3 or if the guide roller 11 is located downstream of the support roller 12, i.e., if the The shaft 11a of the guide roller 11 is located downstream with respect to the shaft 12a of the support roller 12, the incoming head end of the metal belt 2 is directed towards the second conveyor path 32.

The position of the guide roller 11, in particular with respect to the support roller 12, can be modified in this respect by actuating the actuator 70. In particular, the guide roller 11 can be moved by means of the actuator 70 from a first roller position, where the guide roller 11 is ahead of the support roller 12 with respect to the transport direction 3, to a second roller position, where the guide roller 11 and the support roller 12 are preferably at the same height with respect to the transport direction 3, or even where the guide roller 11 is downstream of the support roller 12. The control device 50 can be designed for this purpose to send a corresponding actuation signal to the actuator 70.

In order to enable, regardless of the strip thickness, essentially continuous winding of the metal strip 2 onto the first and second reels 20, 30, the control device 50 is conveniently designed to cause a change in the position of the guide roller 11 according to the thickness of the metal strip 2 and/or the conveying speed of the metal strip 2, temporarily before or after the metal strip 2 is split by means of the splitting device 40. Continuous winding of the metal strip 2, in this respect, means a change of winding means, in particular from the first reel 20 to the second reel 30, which is carried out without interrupting the manufacturing process of the metal strip 2. The circumstances under which the guide roller 11 is temporarily repositioned before or after the metal strip 2 is split are explained in more detail below with reference to FIG. 2.

With the help of a data or signal connection to the dividing device 40, the control device 50 can adjust the moment when the guide roller 11 is repositioned to precisely coincide with the moment the metal strip 2 is divided. For example, the dividing device 40 can provide a signal or data that characterizes the dividing moment. Alternatively, the control device 50 can also be designed to cause the dividing device 40 to divide the metal strip 2 at a predetermined time.

The control device 50 can receive information about the thickness and/or transport speed of the metal belt 2 from the sensor unit 60. The sensor unit 60 is designed to measure the thickness and/or transport speed of the metal belt 2. Alternatively or additionally, these parameters can also be determined, in particular calculated, by the control device 50, for example, when the control device 50 is at least part of an automation unit.

Figure 2 shows a first roller position P1 and a second roller position P2 of a guide roller 11. In the first roller position P1, the guide roller 11 is positioned ahead of a support roller 12, with which the guide roller 11 forms a pair of guide rollers, relative to a conveying direction 3 of a metal belt 2 guided by the pair of guide rollers. In the second roller position P2, on the other hand, the guide roller 11 is preferably positioned at the same height relative to the conveying direction 3 as the support roller 12 or is located downstream of the support roller 12. This is indicated by the vertically drawn dashed line, which runs perpendicular to the conveying direction 3.

During repositioning, the guide roller 11 advantageously moves parallel to the transport direction 3. Preferably, the travel distance d is quite large compared to a metal strip thickness 2 of a few millimeters, so that the pair of guide rollers can reliably guide a head end 4 of the metal strip 2 into a guide box 21 and then to a first reel (not shown) when the guide roller 11 is in the first roller position P1. The travel distance d can be, for example, approximately ten to one hundred times the strip thickness. A typical travel distance d is approximately 200 mm to 350 mm.

If the metal strip 2 is guided through the guide roller 11 to the first reel, the metal strip 2 passes through the guide box 21 in a first transport path 22 indicated by dashes. The guide box 21 is limited on one side by a second guide element 24. In this respect, a gap 26 between the guide roller 11 in the second roller position P2 and the second guide element 24 must be configured very narrow, for example 10 mm or less, so that a head end 4 of a very thin metal strip 2 can be guided from the guide roller 11 over the slot 26 also to a second transport path 32, also indicated by dashes, to a second reel (not shown). If the gap width 26 is selected to be too large, there is a risk that the very thin metal band 2 will bend too much due to its own weight and collide with its head end 4 laterally against the second guiding element 24, instead of passing over its surface.

Therefore, a thin metal strip 2 with a thickness of less than 6–13 mm can be fed onto the first reel via the first conveying path 22 without damage, particularly without collision with the guide box 21 or the second guide element 24, when the guide roller 11 is in the second roller position P2. However, this is not possible for thick metal strips 2 with a thickness of 6–13 mm or more. Such thick metal strips 2 can only be fed onto the first reel via the first conveying path 22 without damage when the guide roller 11 is in the first roller position P1. If a thick metal strip 2 is first wound using the first reel, and the winding must continue using the second reel, the guide roller 11 can therefore only be positioned in the second roller position P2 when a metal strip 2 no longer passes through the guide box 21 or at least a metal strip 2 is no longer arranged between the guide roller 11 and the second guide element 24.

The exact web thickness at which the guide roller 11 can be moved after the metal strip 2 is split depends on the casting speed and, therefore, also on the conveying speed. At low speeds, the web can be thinner; at high casting speeds, only thicker webs are possible.

Figure 3 shows an example of a metal strip divided into a front metal strip section 2a and a rear metal strip section 2b. The front metal strip section 2a runs through a guide roller 11 of a pair of guide rollers 10 in a first conveying path 22 to a first reel 20. In this respect, the guide roller 11 is positioned in a first roller position. In this first roller position, the guide roller 11 is ahead of a support roller 12 of the pair of guide rollers 10, relative to a conveying direction 3.

When the metal strip is split, a gap L is formed between a head end 4 of the rear metal strip section 2b and a foot end 5 of the front metal strip section 2a. The gap L can be further increased after splitting, for example, by increasing the winding speed of the first coil 20.

By forming the gap L, sufficient time can be gained to position the guide roller 11 to a second roller position, where the guide roller 11 is, relative to the transport direction 3, preferably at the same height as the support roller 12 or even downstream of the support roller 12 before the head end 4 of the rear metal strip section 2b reaches the pair of guide rollers 10. Conveniently, the repositioning of the guide roller 11 is only initiated in this respect after the foot end 5 of the front metal strip section 2a has left the pair of guide rollers 10. If the metal strip is a thick metal strip with, for example, a thickness greater than 6-13 mm, this prevents the front metal strip section 2a from being trapped between the guide roller 11 and a second guide element 24 arranged downstream of the pair of guide rollers 10.

FIG. 4 shows an example of a procedure 100 for winding a metal band 2.

In a process step S1, the metal strip 2 is guided with the help of a pair of guide rollers 10 towards a first coil 20. The metal strip 2 travels in this respect on a guide roller 11 of the pair of guide rollers 10, which is in a first roller position, on a first transport path 22 to the first coil 20.

In another procedural step S2, it is decided whether the guide roller 11 should be temporarily repositioned to a second roller position before or after the metal strip 2 is split by means of a splitting device 40. This can be determined, for example, by checking whether the travel time required to reposition the guide roller 11 is longer than the period of time during which the pair of guide rollers 10 does not guide the metal strip 2 after it has been split. If this is not the case—that is, if there is sufficient time to reposition the guide roller 11, as previously described in relation to FIG. 3—the metal strip 2 is first split in another procedural step S3a using the splitting device 40. Splitting the metal strip 2 results in a front metal strip section 2a with a foot end 5 and a rear metal strip section 2b with a head end 4.

Conveniently, in process step S3a, the winding speed of the first coil 20 is increased simultaneously or at least immediately after the division of the metal strip 2, and thus the transport speed in the first transport path 22.

As soon as the foot end 5 of the previous metal strip section 2a has left the pair of guide rollers 10, a window of time opens for the repositioning of the guide roller 11.

Accordingly, in another procedure step S4a, the guide roller 11 is moved to the second roller position, as indicated by the arrow.

The end of this time window is defined by the arrival of the head end 4 of the rear metal strip section 2b at the pair of guide rollers 10. At this time, the guide roller 11 is already in the second roller position. Correspondingly, the pair of guide rollers 10 guides the rear metal strip section 2b in another procedural step S5a to a second reel (not shown) on a second conveyor path 32. The front metal strip section 2a, wound with the help of the first reel 20, can then be removed, and the first reel 20 can be prepared for reuse.

If the test in procedure step S2 shows that the displacement time required to reposition the guide roller 11 is longer than the time period during which the pair of guide rollers 10 does not guide any metal strip 2 after the metal strip 2 is split, then, in another procedure step S3b, the guide roller 11 is moved to the second roller position. This is indicated by the arrow.

After the guide roller 11 is positioned in the second roller position, the metal strip 2 can be split with the help of the splitting device 40. This is done in another procedure step S4b.

If the head end 4 of the rear metal strip section 2b reaches the pair of guide rollers 10, the rear metal strip section 2b is guided into the second conveyor path 32. In another process step S5b, as a result, the rear metal strip section 2b is fed into the second reel via the guide roller 11 into the second conveyor path 32.

Whether the time window during which the pair of guide rollers 10 does not guide a metal strip 2 is sufficient for the repositioning of the guide roller 11 depends largely on the conveying speed of the preceding metal strip section 2a and the conveying speed of the following metal strip section 2b (in the first conveying path 22). The conveying speed of the following metal strip section 2b is usually constant and corresponds to the thickness of the metal strip 2, since in a continuously manufactured metal strip 2 the mass flow is constant. The conveying speed of the preceding metal strip section 2a can be adjusted independently, for example, by adjusting the winding speed of the first reel 20, since the metal strip 2 is divided. However, this is generally limited. Therefore, if the metal belt 2 is a thin metal belt 2 with a belt thickness of, for example, 6.5 mm or less, the conveying speed of the front metal belt section 2a can only be increased slightly above the conveying speed of the rear metal belt section 2b predetermined by the manufacturing process of the metal belt 2. In such a metal belt 2, the head end 4 of the rear metal belt section 2b therefore reaches the pair of guide rollers 10 before the guide roller 11 can be positioned in the second roller position.

As a result, the test in procedure step S2 can be based on the thickness of the metal strip 2 and/or the conveying speed. Alternatively, the decision in procedure step S2 as to whether the guide roller 11 should be temporarily repositioned before or after the splitting of the metal strip 2 can also be made by consulting a reference table that stores instructions on when to reposition the guide roller 11 based on the strip thickness and/or the conveying speed.

Although the invention has been illustrated and described in detail by means of the preferred embodiments, the invention is not limited by the examples disclosed and those skilled in the art may derive other variations without leaving the scope of protection of the appended claims.

List of references

1 System

2 Metal band

2nd Section of anterior metal band

2b Rear metal band section

3 Transport Management

4 Head end

5 Foot end

10 Pair of guide rollers

11 Guide roller

11th Axis

12 Support roller

12th Axis

20 First coil

21 Guide box

22 First transport route

23 First guiding element

24 Second guiding element

25 Transport rollers

26 Interstice

30 Second coil

32 Second transport route

40 Dividing device

50 Control device

60 Sensor Unit

70 Actuator

100 Procedure

S1-S5a,b Procedure stages

P1 First roller position

P2 Second roller position

L Hole

d Displacement path

Claims (10)

1. Method (100) for winding a continuously manufactured metal strip (2), which has - (S1) guiding a metal strip (2) through a guide roller (11) of a pair of guide rollers (10) positioned in a first roller position (P1) along a first transport path (22) to a first coil (20), - (S3a, S4b) division of the metal strip (2) upstream of the pair of guide rollers (10), and - (S3b, S4a) repositioning the guide roller (11) of the guide roller pair (10) in a second roller position (P2), where the metal strip (2) is guided through the guide roller (11) along a second conveying path (32) to at least a second reel (30) (S5a, S5b), characterized by The repositioning of the guide roller (11) is carried out according to a thickness of the metal strip (2) and/or a transport speed of the metal strip (2) temporarily before or after the division of the metal strip (2). 2. Method (100) according to claim 1, wherein the guide roller (11), when temporarily repositioned after the division of the metal strip (2), is repositioned at a time interval with respect to the division of the metal strip (2), which depends on the thickness of the metal strip (2) and/or the transport speed of the metal strip (2). 3. Method (100) according to claim 1 or 2, wherein it is checked (S2) whether a displacement duration required for repositioning the guide roller (11) is greater than a period where the pair of guide rollers (10) does not guide a metal strip (2) after the splitting of the metal strip (2), and the guide roller (11) is temporarily repositioned before or after the splitting of the metal strip (2) on the basis of a result of this test. 4. Method (100) according to claim 3, wherein - the metal strip (2) is divided into a front metal strip section (2a), which is wound with the first reel (20), and a rear metal strip section (2b), which is wound with the second reel (30), and - the test is based on a difference between a first time period from the division of the metal strip (2) until the arrival of a head end (4) of the rear metal strip section (2b) at the pair of guide rollers (10) and a second time period from the division of the metal strip (2) until the exit of a foot end (5) of the front metal strip section (2a) from the pair of guide rollers (10). 5. Method (100) according to claim 1 or 2, wherein a decision is made as to whether the repositioning of the guide roller (11) should be carried out temporarily before or after the splitting of the metal strip (2), based on a reference table. 6. Method (100) according to any of the preceding claims, wherein the thickness of the metal strip (2) and/or the transport speed is calculated with the aid of an automation unit or measured with the aid of a sensor unit (60). 7. Method (100) according to any of the preceding claims, wherein the transport speed in the first transport path (22) is increased after the division of the metal strip (2) to generate a gap (L) that occurs during the division of the metal strip (2) between the previous metal strip section (2a) and the subsequent metal strip section (2b) with a predetermined size. 8. Method (100) according to any of the preceding claims, wherein the metal strip (2) is manufactured in a continuous process by means of an installation comprising casting and rolling, such that the metal strip (2), upon reaching the pair of guide rollers (10), has a thickness of at least 0.5 mm, preferably at least 0.8 mm, and/or up to 25.4 mm or more, preferably up to 30 mm or more. 9. Method (100) according to any of the preceding claims, wherein the guide roller (11) is repositioned before the division of the metal strip (2) if the metal strip (2) has a thickness of 6 mm or less, and is repositioned only after the division of the metal strip (2) if the metal strip (2) has a thickness of 13 mm or more. 10. System (1) for winding a continuously manufactured metal strip (2), which has - a pair of guide rollers (10) with a repositionable guide roller (11), - a first coil (20) arranged downstream of the pair of guide rollers (10), - at least a second coil (30) arranged downstream of the first coil (20), - at least one dividing device (40) arranged upstream of the pair of guide rollers (10) for dividing the metal strip (2), and - a control device (50), characterized in that the control device (50) It is designed to cause a repositioning of the guide roller (11) from a first roller position (P1), where the metal strip (2) can be guided through the guide roller (11) along a first transport path (22) to the first coil (20), to a second roller position (P2), where the metal strip (2) can be guided along a second transport path (32) to at least a second coil (30), according to a thickness of the metal strip (2) and/or a transport speed of the metal strip (2) temporarily before or after the division of the metal strip (2) by means of the division device.