Method and device for guiding and centering a metal rolled stock in a rolling mill

Description

[0001] The invention relates to a method for guiding and centering a metal rolling stock in a rolling train with units and rolling stands arranged in a rolling line for forming the rolling stock, wherein the method comprises the use of lateral guide means which exert a lateral force on the moving rolling stock at various locations on the rolling line, wherein the method further comprises an inlet centering of the rolling stock upstream of a first unit and / or upstream of a first rolling stand of the rolling train with first lateral guide means and, downstream in the transport direction of the rolling stock, an alignment of the rolling stock parallel to the rolling line with second lateral guide means.

[0002] The invention further relates to a device for carrying out the method.

[0003] A method and a device according to the preamble of claims 1 and 9, respectively, is known, for example, from EP 2 445 659 B1. The method described in EP 2 445 659 B1 comprises the finish rolling of a slab into a strip in a device which has at least one furnace, at least one processing device arranged downstream of the furnace in the conveying direction of the slab, and a rolling train arranged downstream of the at least one processing device in the conveying direction of the slab, wherein means are provided with which a force can be exerted on the sides of the slab in order to move the axis of the slab in accordance with a predetermined position transversely to the conveying direction of the slab, in particular in accordance with the axis of the rolling train.The method comprises first means for exerting a lateral force on the slab, which act on the slab at a first location, and second means for exerting a lateral force on the slab, which act on the slab at a second location, wherein the second location is spaced from the first location in the conveying direction of the slab, wherein the first location is behind the furnace and the second location is in front of, inside or behind the at least one processing device.

[0004] In the specific embodiment described in EP 2 445 659 B1, the second location is located upstream of a processing device in the form of a descaling device. Mechanical lateral guides for the rolling stock in the form of lateral guide rulers are provided directly upstream of a first rolling stand of the rolling mill. Such a ruler guide at the inlet of the first forming device or the first rolling stand must be designed in such a way that the rolling stock is not touched, as otherwise, the edges of the rolling stock are at risk of being damaged. Therefore, such a ruler guide for the rolling stock is usually moved at a distance from the rolling stock. The lateral guide means according to EP 2 445 659 B1 ensure the centering of the slab upstream of the rolling mill; however, alignment of the slab transverse to the rolling line is not possible with this device.

[0005] A device and method for laterally guiding a rolled or cast product on a conveyor line are known, for example, from WO 2014 / 102189 A1. The device comprises a first and a second guide rail, wherein the guide rails are arranged opposite one another on either side of the conveyor line and are each connected to at least one actuator for movement in the direction of a width of the conveyor line, wherein the actuators can be actuated perpendicular to the transport direction of the rolled or cast product.By actuating the respectively assigned actuator, the guide rails can be positioned independently of one another, each with their associated longitudinal axis of the rolled or cast product, at a predetermined angle and / or at a different distance from the center of the conveyor line. These guide rails each have contact rollers that can be moved into contact with a side edge of the rolled or cast product by moving the guide rail in order to guide and / or compress the product. This design is complex. Precise adjustment of the forces acting laterally on the rolled stock is difficult with this concept. Furthermore, WO 2014 / 102189 does not provide any suggestions as to how the rolled stock can be held in the center of the rolling mill or rolling line until the end of the forming process.

[0006] Further prior art is known from JP H05293526 A.

[0007] The invention is therefore based on the object of providing a method and a device of the type mentioned above that enable the rolling stock to be centered in a rolling mill or in a transport line of a rolling mill and aligned transversely to the transport direction, while simultaneously preventing wear and / or damage to the guides and the rolling stock. In particular, the method and device according to the invention should also enable the rolling stock to be held in the center of the rolling mill or in the rolling line until the end of the rolling process.

[0008] The object underlying the invention is achieved by a method according to claim 1 and by a device according to claim 9. Further advantageous embodiments of the invention emerge from the respective subclaims.

[0009] According to one aspect of the present invention, a method for guiding and centering a metal rolling stock in a rolling mill or in a transport line of a rolling mill with units and rolling stands arranged in a rolling line for forming the rolling stock is proposed, wherein the method comprises the use of lateral guide means that exert a lateral force on the moving rolling stock at various locations on the rolling line, wherein the method further comprises at least one inlet centering of the rolling stock upstream of a first unit and / or upstream of a first rolling stand of the rolling mill with first lateral guide means and, downstream, an alignment of the rolling stock transversely to the rolling line with second lateral guide means. The method is characterized in particular in that the inlet centering comprises a funnel-shaped, planar guide for the rolling stock and a point-based guide for the rolling stock.

[0010] Aggregates within the meaning of the present invention include shears, scale washers, edgers, coil boxes, or the like. The term "aggregate" is used within the meaning of the invention to distinguish it from the rolling stands of the rolling mill, which serve to form the rolled stock. The rolling stock can be slabs, thin slabs, or a pre-roll. The rolling mill can be designed as a hot strip mill.

[0011] The method initially comprises catching the rolled stock as it enters the rolling mill by the inlet centering device, i.e. at least upstream of a first unit, preferably setting a moderate hopper with first lateral guide means with a relatively small helix angle of, for example, 1° to 30°, preferably 5° to 20°, for reliable strip transport during entry, and centrally aligning the rolled stock for a subsequent process step, for example for a shear cut. The method then provides for central feeding of the rolling stock head and alignment of the rolled stock transversely to the rolling line for the start of the subsequent forming process. Relatively close guidance of the rolled stock with second lateral guide means allows the rolled stock to be held centrally during forming, so that the forming process takes place in the expected central position of the rolling stand of the rolling mill.

[0012] The rolling mill can, for example, be a finishing mill downstream of a roughing mill. However, the rolling mill can also be a roughing mill comprising one or more roughing stands. The multi-stage method according to the invention has the advantage that the edges of the rolling stock are engaged gently and with low wear, which is ensured in particular by selective guidance and centering of the rolling stock. The combination of flat and selective guidance by the inlet centering has the advantage that a rolled stock head or tail entering or leaving at an angle or off-center is gently deflected and simultaneously guided safely by the moderate hopper structure until the end of the inlet centering, and the load on the selective guidance is reduced. This not only makes guidance more reliable but also limits the load on the components.

[0013] The method according to the invention provides for the use of third lateral guide means for the inlet centering of the rolling stock. Aggregates such as heating and cutting devices can be arranged between the first and third lateral guide means. Two-stage inlet centering has the advantage that the forces exerted on the edge of the rolling stock can be applied particularly gently. The first and third lateral guide means are arranged directly one behind the other downstream in the rolling direction with a first relatively small distance, whereas the first and second and / or third lateral guide means are arranged downstream in the rolling direction with a relatively greater distance from one another, so that a relatively large displacement moment can be introduced into the rolling stock or the edge of the rolling stock with a relatively low impact of force.can be introduced into the hot strip in order to align it transversely to the conveying direction as it enters the rolling mill.

[0014] Preferably, the first and second lateral guide means are arranged one behind the other with a large distance between 6 and 20 m in the rolling direction, while the first and third lateral guide means are arranged directly behind the other with a second smaller distance of, for example, 1 m to 6 m.

[0015] In particular, the first and third lateral guide means can be designed with different levels of robustness or to absorb forces of different magnitudes. For example, the first lateral guide means can be designed to absorb greater forces than the third lateral guide means.

[0016] In a preferred variant of the method according to the invention, all lateral guide means are brought into and out of engagement with the rolling stock using a controllable, variable setting force. For this purpose, the lateral guide means can be adjusted, for example, via hydraulic cylinders with position sensors and pressure sensors. For this purpose, it is advantageous if the method includes force and / or position control of the lateral guide means. Furthermore, control and / or regulation of the lateral guide means can be provided depending on the position of the rolling stock in the rolling mill.

[0017] The method expediently provides for a further funnel-shaped, planar and punctual guidance of the rolling stock by means of the third lateral guidance means.

[0018] In a further expedient and advantageous variant of the method according to the invention, the alignment of the rolled stock with the second lateral guide means takes place immediately before the first rolling stand of the rolling mill. "Immediately" within the meaning of the present application means without the interposition of additional units or rolling stands.

[0019] Preferably, the lateral guide means are actively positioned against the rolling stock, preferably with a contact force that is less than the plastic deformability of the rolling stock. This contact force can be, for example, between 5 and 50 kN if the rolling stock does not press against the lateral guide means due to its own dynamic movement. Furthermore, the lateral guide means are preferably positioned against the rolling stock such that both sides of the lateral guide means are in contact with the rolling stock. The contact force applied by the lateral guide means is in any case dimensioned such that no compression of the rolling stock at the edges is caused.

[0020] A compression device is not a lateral guidance device within the meaning of the invention.

[0021] Preferably, the guide of the rolling stock for aligning the rolling stock transversely to the rolling line comprises a guide which is narrower than the guide of the inlet centering in order to ensure that the rolling stock is held in the rolling line.

[0022] Furthermore, it is advantageous if the first lateral guide means are temporarily disengaged from the rolling stock after a first contact with the rolling stock and before a second contact with the rolling stock by means of the second or third lateral guide means or at least one further lateral guide means. This has the advantage that the strip head pushed into the center of the rolling mill by the first lateral guide means is also transported in the center of the rolling mill until the next contact with another lateral guide means.

[0023] According to a further advantageous variant of the method, the orientation and position of the rolled stock relative to the rolling line can be detected by sensors and an adjustment movement and / or adjustment force of the lateral guide means can be controlled depending on the position and / or orientation of the rolled stock. The orientation of the rolled stock relative to the rolling line can be detected either via pressure sensors in adjustment cylinders of the lateral guide means or by separate sensors.

[0024] The position of the rolling stock with respect to the rolling line is advantageously detected by a strip tracking system, whereby the current position of the rolling stock head and the rolling stock foot are detected.

[0025] The first, second and / or third lateral guide means can each be designed to absorb different forces and / or can be adjusted to the edge of the rolling stock with different forces in order to have a positive influence on the edge of the rolling stock, for example in order to achieve a pre-strengthening of the edge of the rolling stock before a first processing step or to prevent edge strengthening.

[0026] The object underlying the invention is further achieved by a device which is particularly suitable and intended for carrying out the method of the type described above.

[0027] According to one aspect of the invention, a device is provided for guiding and centering a metal rolling stock in a rolling train, wherein the rolling train comprises units and rolling stands arranged in a rolling line for forming the rolling stock, at least comprising first and second lateral guide means which are arranged at different spaced-apart locations on the rolling line, wherein at least first lateral guide means form an inlet centering of the rolling stock and are arranged at a first large distance in front of a first rolling stand and at least second lateral guide means are arranged at a second smaller distance in front of the first rolling stand and are provided for aligning the rolling stock parallel and centrally to the rolling line.

[0028] The device is characterized in particular in that at least the first lateral guide means have a planar guide for the rolling stock and additionally a point-shaped guide for the rolling stock, wherein the point-shaped guide is preferably designed as a roller lateral guide.

[0029] The first and second lateral guide means are arranged at a relatively greater distance from one another in order to be able to introduce a large moment into the rolled stock with the lowest possible contact force when aligning the rolled stock transversely to a center line of the rolling mill.

[0030] According to the invention, at least third lateral guide means are further provided. The third lateral guide means are arranged at a relatively short distance behind the first lateral guide means. The second and / or third lateral guide means each comprise a planar guide and additionally at least one point-shaped guide for the rolling stock.

[0031] According to this variant, the concept of the method and device according to the invention comprises the arrangement of at least two lateral guides arranged directly one behind the other, each with adjustable rollers for guide-rolled stock contact without edge damage, which can be moved individually and flexibly adjusted. These guides are each formed from a combination of flat guides and point-shaped guides, with the first and third lateral guides forming a type of double hopper, with which the rolled stock is initially guided centrally into the subsequent units prior to a forming step and then enters these units centrally.

[0032] As mentioned above, the flat guides are essentially designed as funnel guides.

[0033] In an advantageous variant of the device according to the invention, the roller side guide is arranged on the outlet side of the hopper guide and / or on the inlet side of the hopper guide. For example, the roller side guides or point guides can be arranged on the first and third side guide means on the outlet side of the hopper guide. The second side guide means can advantageously be provided with a roller side guide on the inlet side for closer guidance and alignment of the rolled stock transversely to the rolling line.

[0034] The lateral guide means can advantageously be adjusted on both sides of the rolling stock with a predeterminable force, preferably at different angular positions. The alignment of the lateral guide means in different angular positions relative to the center of the rolling mill or the rolling line, and thus relative to the side edges of the rolling stock, is particularly advantageous for the funnel-shaped arrangement of the first and third lateral guide means.

[0035] Advantageous embodiments of the invention are explained below by way of example with reference to the accompanying drawings.

[0036] They show: Figure 1 is a schematic plan view of a part of a rolling mill with devices for guiding and centering the rolling stock according to the invention, Figure 2 is one of the Figure 1corresponding view in which the rolling stock is in a different position, Figure 3 an enlarged view of the guidance of the rolling stock at different positions and Figure 4 a schematic representation of different positions of the rolling stock in the rolling train in the method according to the invention.

[0037] In the following, reference is first made to the illustrations in Figure 1 and 2, which show a plan view of the entry area of ​​a rolling mill 1, in which a strip-shaped rolled stock 2 is fed from upstream processes such as a heating furnace, casting machine, or roughing stand to a forming process. The rolling mill 1 according to the invention is a finishing mill, which preferably comprises a plurality of rolling stands, of which a first rolling stand 3 is shown only in outline. The rolled stock 2 is, for example, a hot strip, which, for example, passes through a shear 4 and a scale washer 5 in the rolling mill 1 before being fed to the first rolling stand 3 in the rolling mill 1. The rolled stock 2 in the form of the hot strip is fed in a known manner via a roller table 6 to the first unit of the rolling mill 1 in the form of the shear 4, which in the present case is designed as a drum shear. The rolled stock 2 passes through the rolling mill 1 from left to right in the illustrations, whereby Figure 1shows the rolling stock 2, while a rolling stock head 7 (strip head) is located on the roller table 6 in the area of ​​the first lateral guide means 8.

[0038] Immediately downstream of the first lateral guide means 8 in the transport direction of the rolled stock 2 are third lateral guide means 10, which are designed approximately corresponding to the first lateral guide means 8. Second lateral guide means 9 are arranged directly in front of the first rolling stand 3 at a distance A1 from the first lateral guide means 1. In the illustrated embodiment, the first and third lateral guide means 8, 10 are arranged directly behind one another at a second, smaller distance A2 of, for example, 1 m to 6 m, which is significantly smaller than the distance A1 of, for example, 6 m to 20 m between the third lateral guide means 10 and the second lateral guide means 9. The first lateral guide means 8 are arranged at a large distance in front of the first rolling stand 3, whereas the second lateral guide means 9 are arranged directly in front of the first rolling stand 3.

[0039] The first lateral guide means 8 and third lateral guide means 10 are designed in the form of a moderate funnel, which forms a funnel shape that deviates from a parallel line by, for example, 1° to 30° and tapers in the transport direction. The angular position of the funnels can be adjusted variably and deviates.

[0040] Between the third lateral guide means 10 and the second lateral guide means 9, in the transport direction of the rolled stock 2, the shears 4 are arranged first, followed immediately by the descaler 5. Other configurations of the arrangement are conceivable within the scope of the invention. For example, the first and third lateral guide means 8, 10 can be provided in front of a coil box and a shear arranged behind it in the transport direction. The distance A1 from the second lateral guide means 9 to the third lateral guide means 10 is selected to be relatively large in order to be able to exert a maximum lever arm on the rolled stock 2 between these two spaced-apart contact points with the rolled stock 2, in order to be able to align and shift it transversely to the transport direction on the roller table 6 from a desired position to an ideal line or to the center line 11 of the rolling mill 1.The respective actual orientation of the rolling stock 2 is indicated in the figures by a roughly dashed line 12.

[0041] As this is particularly the case with Figure 3As can be seen, the first, second and third lateral guide means 8, 9, 10 each comprise two guide legs 13, which are each pivotable and adjustable transversely to the center line 11 of the rolling mill by means of adjusting cylinders 14. The adjusting cylinders 14 are preferably designed as hydraulic cylinders which are supported against corresponding abutments. Each guide leg 13 forms a guide surface oriented towards the side edges of the rolling stock 2, to which, in the case of the first and third lateral guide means 8, 10, a point-shaped support in the form of a guide roller 15 is connected. The guide legs 13 of the first and third lateral guide means 8, 10 are each aligned or adjusted in a funnel shape, so that the first and third lateral guide means 8, 10 form double funnels which effect inlet centering of the rolling stock 2.

[0042] As this is Figure 1As shown, the rolling stock 2 arranged off-center on the roller table 6 first comes into contact with a guide leg 13 of the first lateral guide means 8. In this case, the first lateral guide means 8 initially fulfil the function of catching the rolling stock 2, which can be designed, for example, as a slab, thin slab or pre-strip.

[0043] The method involves setting a moderate hopper with a small helix angle so that the rolled stock 2 initially comes into contact with the first lateral guide means 8 as gently as possible. Further centering then occurs by means of the third lateral guide means 10. The guide rollers 15 of the first and third lateral guide means 8, 10 then only make point-like contact with the edges of the rolled stock 2. The rolled stock 2 is thus fed roughly centered to the shear 4 and the subsequent scale washer 5.

[0044] The rolling stock head 7 then enters the guide area of ​​the third lateral guide means 10, which are designed corresponding to the first lateral guide means 8.

[0045] The second lateral guide means 9 are arranged directly in front of the first rolling stand 3 of the rolling train 1. The second lateral guide means 9 also comprise two guide legs 13, on which, however, unlike the first and third lateral guide means 8, 10, guide rollers 15 are arranged upstream in the transport direction of the rolled stock 2, i.e. on the inlet side of the guide formed by the guide legs 13. Upstream of the guide rollers of the second lateral guide means 9 is a hopper that can be moved together with the guide rollers 15 and that ensures that the rolled stock head 7 runs between the guide rollers of the second lateral guide means 9. The width of the opening between the guide legs 13 of the second lateral guide means 9 is smaller than that of the hopper openings of the first and third lateral guide means 8, 10.Ideally, the guide legs 13 of the second lateral guide means 9 are aligned parallel to one another. The guide rollers 15 hold the rolling stock 2 in the center line 11 of the rolling mill 1 throughout the entire rolling process, even if the rolling stock base 16 of the rolling stock 2 has already left the guide area of ​​the first and third lateral guide means 8, 10, as shown in . Figure 4d is shown. The guide legs 13 can still hold the rolling stock even when the rolling stock foot 16 of the rolling stock 2 has already left the guide rollers 15 of the second lateral guide means 9.

[0046] The Figures 4a) to 4c ) show a schematic sequence of a rolling stock entering the rolling mill 1, where Figure 4d ) depicts the state in which the rolling stock foot 16 of the rolling stock 2 is still located between the second lateral guide means 9 and a following section of the rolling stock is already located on the roller table 6 of the rolling mill 1.

[0047] In the method according to the invention, the rolling stock head 7 first enters the hopper opening of the first lateral guide means 8. If the rolling stock 2 is misaligned, the rolling stock head 7 will first come into contact with one of the guide legs 13 of the first lateral guide means 8 and catch the rolling stock 2. The rolling stock 2 then enters the inlet area of ​​the third lateral guide means 10. The third lateral guide means 10 centrally aligns the rolling stock 2 for the next process step, for example, a shear cut using the shears 4 arranged downstream of the third lateral guide means 10.

[0048] In Figure 4 b)The state of the rolling stock 2 is shown, in which the rolling stock head 7 has just entered the inlet area of ​​the second lateral guide means 9. In this position of the rolling stock 2, a secure guidance and alignment of the rolling stock 2 is ensured by all lateral guide means 8, 9, 10, so that the rolling stock head 7 can be fed centrally to the forming process by the first roll stand 3 and can also be held in this position throughout the entire rolling process. Figure 4 d) shows the state of the rolling stock 2, in which the rolling stock foot 16 is just in the area of ​​the guide with the second lateral guide means 9. Reference symbol list

[0049] 1 Rolling mill 2 Rolled stock 3 Rolling stand 4 Shears 5 Scale washer 6 Roller table 7 Rolling stock head 8 First lateral guide means 9 Second lateral guide means 10 Third lateral guide means 11 Center line of the rolling mill 12 Actual line of the rolled stock 13 Guide leg 14 Adjusting cylinder 15 Guide roller 16 Rolling stock foot A1 First large distance between the first and second lateral guide means A2 Second small distance between the first and third lateral guide means

Claims

1. Method of guiding and centring a metal rolling material (2) in a rolling train (1) with at least one unit arranged in a rolling line and at least one roll stand (3) for reshaping the rolling material (2), wherein the method comprises use of lateral guide means (8, 9, 10) which exert a lateral force on the moving rolling material (2) at different places of the rolling line, wherein the method further comprises entry centring of the rolling material (2) before a first unit and / or before a first roll stand (3) of the rolling train (1) by first lateral guide means (8) and orientation of the rolling material (2), downstream of the transport direction of the rolling material (2), transversely to the rolling line by second lateral guide means (9), characterised in that the entry centring comprises funnel-shaped area guidance of the rolling material (2) and point guidance of the rolling material (2) and that for entry centring of the rolling material (2) use is additionally made of third lateral guide means (10), the lateral guide means (8, 9, 10) each comprising area guidance of the rolling material and additionally point guidance of the rolling material, wherein the point guidances are configured as roller lateral guidance, the area guidances are configured substantially as funnel guidance and the lateral guide means (8, 9, 10) are each actively adjusted against the rolling material (2), and further characterised in that the first and third lateral guide means (8, 10) are arranged directly in succession downstream in the rolling direction at a first comparatively small spacing (A2) and that the first (8) and second (9) lateral guide means (10) are arranged downstream in rolling direction at a comparatively larger spacing (A1) from one another.

2. Method according to claim 1, characterised n that the lateral guide means (8, 9, 10) are brought into and out of engagement with the rolling material (2) by a controllable, variable adjusting force.

3. Method according to one of claims 1 and 2, characterised in that a further funnel-shaped, area and point guidance of the rolling material (2) is provided with the help of the third lateral guide means (10).

4. Method according to any one of claims 1 to 3, characterised in that the alignment of the rolling material (2) is carried out by the second lateral guide means (9) directly before the first roll stand (3) of the rolling train (1).

5. Method according to any one of claims 1 to 4, characterised in that the lateral guide means (8, 9, 10) are adjusted against the rolling material (2) with a contact force lower than the plastic deformability of the rolling material (2).

6. Method according to any one of claims 1 to 5, characterised in that the guidance of the rolling material (2) for alignment of the rolling material (2) parallel to the rolling line (11) comprises guidance of the rolling material (2) which is at least narrower than the guidance of the entry centring, moreover preferably adjusted for contact with the rolling material.

7. Method according to any one of claims 1 to 6, characterised in that the first lateral guide means (8) after first contact with the rolling material (2) and before second contact with the rolling material (2) are temporarily brought by means of the second or third lateral guide means (9, 10) or at least one further lateral guide means out of contact with the rolling material (2).

8. Method according to any one of claims 1 to 7, characterised in that the alignment and position of the rolling material (2) with respect to the rolling line (11) are detected by sensor and that an adjusting movement and / or adjusting force of the lateral guide means (8, 9, 10) is or are controlled in dependence on the position and / or alignment of the rolling material (2) or the position of the lateral guide means is set to a selectable spacing from the rolling line.

9. Device for guiding and centring a metal rolling material (2) in a rolling train (1), wherein the device can be arranged in the rolling train (1), particularly for carrying out the method according to any one of claims 1 to 10, wherein the rolling train (1) comprises at least one unit arranged in a rolling line (11) and at least one roll stand (3) for reshaping the rolling material (2), comprising at least first, second and third lateral guide means (8, 9, 10) arranged at different mutually spaced-apart places of the rolling line (11), wherein at least first lateral guide means (8) form entry centring of the rolling material (2) and at least second lateral guide means (9) can be arranged in front of the first roll stand (3) and are provided for alignment of the rolling material parallelly and centrally with respect to the rolling line, characterised in that each of the first, second and third lateral guide means (8, 9, 10) comprises area guidance of the rolling material and additionally point guidance of the rolling material, wherein the point guidances are formed as roller lateral guidance, the area guidances are formed substantially as funnel guidance and the lateral guide means (8, 9, 10) are each adjustable on either side of the rolling material (2) with a predeterminable force, and further characterised in that the first and third lateral guide means (8, 10) are arranged directly in succession downstream in rolling direction at a first comparatively small spacing (A2) and that the first (8) and second (9) lateral guide means are arranged at a comparatively larger spacing (A1) from one another, wherein the second lateral guide means can preferably be arranged directly in front of a first roll stand (3).

10. Device according to claim 9, characterised in that the second and / or third lateral guide means (9, 10) respectively comprise an area guidance of the rolling material (2) and additionally at least one point guidance of the rolling material (2).

11. Device according to one of claims 9 and 10, characterised in that the area guidance is formed at least in part as funnel guidance.

12. Device according to claim 11, characterised in that the roller lateral guidance is arranged at the outlet side of the funnel guidance and / or at the inlet side of the funnel guidance.

13. Device according to any one of claims 9 to 12, characterised in that the lateral guide means (8, 9, 10) can be adjusted on either side of the rolling material (2) in different angular settings.