Reversing profile rolling method, profiling roller system and tandem of profiling rollers

Abstract

The operational reliability of reversing profile rolling methods, profiling roller systems and tandems of profiling rollers can be increased by avoiding strip-threading processes.

Description

[0001] Reversing profile rolling process, profile roller arrangement and profile roller tandem

[0002] The invention relates, firstly, to a reversing profile rolling process using at least one profile roll arrangement forming a roll pass and comprising profile rolls which act to form a rolled stock, wherein the rolled stock passes the profile rolls in a first rolling direction in a first rolling direction and is thereby formed, the rolling direction is then reversed and the rolled stock passes the profile rolls in a second pass in a second rolling direction which is opposite to the first rolling direction and is thereby formed. Secondly, the invention relates to a profile roll arrangement forming a roll pass and comprising profile rolls having an input side and an output side, the arrangement being arranged along a pass line. Thirdly, the invention also relates to a profile roll tandem comprising at least two profile roll arrangements each forming a roll pass and comprising profile rolls having an input side and an output side, the arrangements being arranged along a pass line.

[0003] Corresponding profile roller arrangements or profile roller tandems are known, for example, from EP 0 256 409 B2, DE 37 30 471 A1, EP 1 232 807 A2, EP 0 256 409 B2, DE 101 03 683 B4, DE 102 41 516 B3, JP 2000-312902 A or DE 34 17 500 C2. Such profile roller arrangements serve to provide semi-finished metal products in the form of long products, in particular to provide long profiles, in particular profile steel or section steel, in rolled form. In this case, corresponding profile roller arrangements comprise at least two rollers forming a rolling pass, of which at least one roller is a profile roller, while the other roller can also be a profile roller or a universal roller.In particular, in the case of a profile roller tandem in which at least two roller arrangements are arranged along a fitting line, it is sufficient if a single roller of the two roller arrangements arranged along the fitting line represents a profile roller in order to ultimately provide a profile roller tandem comprising at least two profile roller arrangements of profile rollers forming a rolling caliber and arranged along a fitting line, since the rolling caliber formed by the profile roller tandem as a whole serves to roll a profile.

[0004] It is known to have the workpiece to be machined rolled multiple times, i.e. in multiple passes, by the same profile roller arrangement in order to utilize the profile roller arrangements as effectively as possible and to be able to influence the structure of the rolled workpiece in the desired manner. In particular, the multiple passes can be used to limit the elongation and thus the extent of deformation in each pass in order to avoid having to adversely influence the structure with each pass. If multiple passes are to be carried out in a profile roller arrangement, a reversing process in which a workpiece first passes through the associated profile roller arrangement, then has its direction of movement reversed and passes through the profile roller arrangement again, has proven advantageous, particularly for reasons of time and temperature control.

[0005] The object of the present invention is to provide a reversing profile rolling process, a profile rolling arrangement and a profile rolling tandem which operate as reliably as possible.

[0006] The object of the invention is achieved by reversible profile rolling processes, by profile rolling arrangements, or by profile rolling tandems with the features of the independent claims. Further advantageous embodiments, possibly independent of these, can be found in the subclaims and the following description.

[0007] The invention is based on the common idea that operational reliability in reversing profile rolling processes, profile roller arrangements or profile roller tandems can be increased by avoiding threading processes.

[0008] Thus, the operational reliability of a reversing profile rolling process using at least one profile roll arrangement forming a roll pass consisting of profile rolls which have a forming effect on a rolled stock can be increased, among other things, if the rolled stock passes the profile rolls in a first pass with a first rolling direction and is formed in the process, the rolling direction is then reversed and the rolled stock passes the profile rolls in a second pass with a second rolling direction which is opposite to the first rolling direction and is unformed in the process, and if the profile rolling process is characterized in that the rolled stock is first guided between the profile rolls with an extended pass and only then are these positioned against the rolled stock for forming.With this type of process, provided the profile roll arrangement is suitably designed and the profile rolling process is not otherwise conducted in a counterproductive manner, it can be ensured that the rolled stock, when fed between the profile rolls, does not damage them due to the extended pass, since the rolls are only subsequently adjusted against the rolled stock for forming. Accordingly, the extent to which the pass is extended during insertion essentially depends primarily on how far the pass is extended in order to reliably prevent any damage to the profile rolls. With a sufficiently extended pass, the risk of accidents can be minimized or almost completely avoided, since ultimately the rolled stock is not threaded between the rolls, but merely arranged between them and the rolls are only subsequently adjusted accordingly with regard to their rolling caliber, i.e. for forming.

[0009] In the present context, the fitting line refers to an idealized line through the respective profile roll arrangement or through a corresponding series of roll arrangements or profile roll arrangements, along which the rolled stock passes the rolls or profile rolls. Depending on the specific design of the associated rolling mill or the specific definition of the fitting line, the fitting line can, for example, approximately represent the center of the rolling stock passing through. On the other hand, it is also common practice, for example, to standardize the fitting line to an inlet or outlet roller table and to align its height to the running surface of the respective roller table or tables. Ultimately, the fitting line is a defined or imaginary line through the respective rolling mill, which serves as the appropriate reference for assemblies that are to be positioned or adjusted in relation to the rolling stock passing through.Since these are relative values, these relative values ​​will simply need to be converted accordingly if a different fitting line is chosen.

[0010] Based on the definition of the pass line, the term “pass” refers to the position of the profile rollers in relation to the pass line, so that an “extended pass” requires a correspondingly extended position.

[0011] The process proposed above requires that, especially at the beginning of the rolling process, a first area of ​​the rolled stock is initially subjected only to a contact pressure acting perpendicular to the pass line, which the profile roll exerts on the rolled stock during its adjustment for forming. This means that, unlike previous profile rolling processes, a first area of ​​the workpiece is not rolled at the beginning of the profile rolling process but rather compressed.

[0012] However, it has been found that although this type of process initially results in rolled stock in this first section not being rolled in the same way as the rest of the rolled stock is then rolled, the risk of any accidents can be significantly reduced. Since the ends of the rolled stock are usually subjected to post-treatment anyway, or are rolled at other points, for example in a subsequent pass, or are even rejected anyway, the corresponding disadvantage of not rolling in the first section of the rolled stock at the start of the rolling process can be accepted. In particular, it can be advantageous to carry out the pass even while taking sufficient safety distances orTo extend safety margins beyond simply avoiding contact with the rolling stock in order to further reduce the risk of accidents, particularly when the rolling stock is delivered with certain straightness tolerances or material thickness variations, for example.

[0013] Depending on the specific process, it is conceivable that the rolls will come into contact with the rolling stock during insertion despite the extended pass. On the other hand, even a slightly extended pass already reduces the risk of significant damage. It is understood that extending the pass sufficiently to ensure that the rolling stock does not touch the rolls during insertion, as reliably as possible, can significantly prevent damage or even minimize its impact.

[0014] Ultimately, any material that can be rolled into a profile can be considered as rolled stock in this case. Such profiles can in particular be profile steels, also known as section steels. Accordingly, however, other rollable materials can also serve as starting materials for correspondingly rolled shaped bodies, such as plastics or sintered materials, although in the former case the effects of accidents are often not expected to be as serious. In this respect, all rollable materials can serve as starting materials for the respective profile rolling processes and thus as the rolled stock fed to the profile rolling arrangement, which can then be rolled into corresponding profiles. In particular, slabs, blocks, hollows or other semi-finished products, preferably made of metals, can serve as starting materials or as the rolled stock fed to the respective profile rolling arrangements.Accordingly, the products of a corresponding profile rolling process are profiles, i.e., long products with a corresponding profile cross-section, which are well-known on the market both as semi-finished products and as finished products, for example, as H-, W-, or I-beams, angle profiles, U-, L-, or T-bars, or as sheet piling, rails, round or polygonal billets, or other long or flat products or special profiles. Accordingly, sectional steels and profile steels, in particular, are well-known on the market as products of such profile rolling processes.

[0015] The profile cross-section of the profiles rolled by the profile rolling process is determined by the respective rolling calibers, which represent the clearance between the corresponding profile rolls of the respective profile roll arrangements, which these leave for the rolled stock as it passes along the pass line. If this rolling caliber deviates from the cross-section of the incoming rolled stock and parts of the profile rolls are in the way of the rolled stock, the material is displaced. The extent to which this displacement occurs along the pass line—and thus at least partially as elongation—or perpendicular to the pass line—and thus as a profile change—depends on the associated rolling conditions.Insofar as the profile rollers are only positioned against the rolling stock and thus also against the pass line for forming after the rolling stock has been initially guided between them with an extended pass, a corresponding effect on the material of the rolling stock only takes place from this point in time.

[0016] Accordingly, the term "profile roll arrangement" in this context refers in particular to any arrangement of at least two rolls that are suitable and intended for rolling profiles. It is understood that the rolls are generally profiled rolls, which can then provide a corresponding rolling pass that forms the rolled stock into a profile. Depending on the specific desired profile, however, it is conceivable that at least one of the rolls of an associated roll arrangement is a universal roll, which is not profiled as such but has a cylindrical roll surface.

[0017] The number of rolls in a profile roll arrangement is not limited to two. Ultimately, three or more rolls can also form a roll pass and thus constitute a profile roll arrangement. In this case, it is particularly known to combine vertical rolls and horizontal rolls. The horizontal rolls generally have horizontally aligned roll axes and are often profiled, while the vertical rolls have vertical roll axes and, as universal rolls, are often unprofiled or have cylindrical roll surfaces.

[0018] In the present context, the term “profile roll arrangement comprising profile rolls” refers to a roll arrangement comprising rolls which forms a common roll pass so that the rolls act jointly and in interaction on the rolled stock, and which is suitable and intended to form the rolled stock into a profile.

[0019] It is understood that, if necessary, several such profile roll arrangements can be combined one behind the other by arranging them along the fitting line. At least two profile roll arrangements arranged along a fitting line are often referred to as a profile roll tandem, even if the profile roll tandem comprises, for example, three or more profile roll arrangements arranged along a fitting line. To the extent that all of these profile roll arrangements are suitable and intended to ultimately form the rolled stock into a profile, all of these roll arrangements are referred to in the present context as profile roll arrangements and all of these rolls as profile rolls, even if individual rolls or individual roll arrangements are or comprise only universal rolls.In this respect, it is preferably sufficient, in case of doubt, if only one roll of the entire profile roll tandem is a profiled roll, in order to designate the overall arrangement as a profile roll tandem consisting of at least two profile roll assemblies arranged along the pass line. In special cases where profiles with a purely rectangular cross-section are to be produced by a profile rolling process, in particular by a reversing profile rolling process, all of the profile rolls can even be designed as universal rolls.

[0020] In particular, the profile roll assemblies or profile roll tandems described above are suitable and intended for performing a reversing profile rolling process. For this purpose, they have, for example, the option of a corresponding drive reversal. The inlet and outlet are also preferably designed for the corresponding rolled stock lengths resulting from the reversing profile rolling process.

[0021] Accordingly, the term “reversing profile rolling process” refers to any rolling process in which, on the one hand, a profile rolling process, i.e. the forming of a rolled stock into a profile by means of rolling, is carried out reversibly, i.e. with a reversal of the direction of passage and with a rolling forming in at least two passes.

[0022] Taking into account the basic idea explained at the beginning of the process of avoiding threading processes in order to increase operational reliability, as well as the knowledge of the process described above that the rolled stock is first guided between the profile rolls with an extended pass and only then are these positioned against the rolled stock for forming, it can be advantageous, cumulatively or alternatively to the combination of features explained here, if the rolled stock remains in contact with at least one of the profile rolls during reversing. This requires, first of all, that the rolled stock can be reversed during reversing without risk of damage to the profile roll with which it remains in contact during reversing. This can also increase operational reliability accordingly.

[0023] In this respect, regardless of the other combinations of features explained here, it is advantageous for increasing operational reliability if, in a reversing profile rolling process using at least one profile roller arrangement forming a rolling pass, consisting of profile rollers which have a forming effect on a rolled stock, wherein the rolled stock passes the profile rollers in a first pass with a first rolling direction and is thereby formed, the rolling direction is then reversed and the rolled stock passes the profile rollers in a second pass with a second rolling direction which is opposite to the first rolling direction and is thereby formed, if the reversing profile rolling process is characterized in that the rolled stock remains in contact with at least one of the profile rollers during the reversal.In contrast to the state-of-the-art process, in which the rolled stock passes through all the profile rolls before being reversed, the reversing takes place in the area of ​​the rolls, particularly as long as the rolled stock remains in contact with at least one of the rolls. This roll, in particular, allows the risk of a breakdown to be very effectively avoided.

[0024] In particular, it is advantageous if the rolling stock remains in contact with at least two rollers acting on the rolling stock on opposite sides or with the rollers forming a common rolling pass during reversing, so that the rolling stock can be held firmly by these rollers during reversing, which further reduces the risk of accidents, in particular if, for example, threading processes with further rollers, for example of further profile roller arrangements, are to take place after reversing, wherein, to avoid accidents, an extended pass can then be provided for the latter profile roller arrangements, as already explained above when introducing the rolling stock.Accordingly, it can be particularly advantageous if the rolling stock remains in contact with all profile rolls of a profile roll arrangement during reversing, whereby a particularly stable guidance of the rolling stock is then ensured, since the rolling stock is then guided accordingly over the entire rolling calibre, which can accordingly reduce the risk of accidents.

[0025] While the approach explained above is designed to ensure that all profile rolls in a profile roll arrangement remain in contact with the rolled stock during reversing, this does not necessarily have to be the case for all profile roll arrangements if they are arranged along the pass line. With such a configuration, it may be sufficient for only the last profile roll arrangement according to the direction of movement before reversing to remain in contact with the rolled stock, while the remaining profile roll arrangements lose contact with the rolled stock before reversing. Even such a process can significantly reduce the risk of accidents due to the good guidance provided by the last profile roll arrangement, particularly if the remaining profile roll arrangements are not moved too quickly against the pass line.

[0026] On the other hand, it is understood that the risk of accidents can be further reduced if not only the profile rolls of a single profile roll arrangement, but at least one profile roll of another profile roll arrangement or all profile rolls of another profile roll arrangement remain in contact with the rolling stock during reversing.

[0027] Depending on the specific process, it may also be advantageous if only one roller of each of two roller arrangements arranged along the pass line remains in contact with the rolling stock during reversing.

[0028] In particular, operational reliability can be increased if all profile roll assemblies remain in contact with the rolled stock during reversing with at least one of their profile rolls, preferably even with several or all of their profile rolls. With such a process, there is naturally a risk that the respective ends of the rolled stock will not come into contact with all rolls of all profile roll assemblies in the manner in which they influence or reshape the remaining rolled stock. However, should this be significant for the final result, this can be counteracted, for example, by increased setting during rolling or by other suitable post-processing, unless the remaining ends are considered scrap anyway.

[0029] In particular, if the rolling stock is first guided between the 30 profile rolls during an extended pass and these are only then positioned against the rolling stock for forming, which can ultimately be carried out at the beginning of the rolling process but also during reversing, and / or in particular if the rolling stock remains in contact with at least one of the profile rolls during reversing, additional guidance of the rolling stock may be unnecessary.

[0030] Here, the term "guiding" refers primarily to the technical guidance of the rolled stock in such a way that it enters the rolling pass—if possible without damage. On the other hand, the term "rolling stock guidance" also refers to the physical arrangement by which such guidance is physically implemented and which, through a guiding contact, is intended to ensure that the rolled stock is guided between the rolls without damage during the threading process.

[0031] Accordingly, regardless of the other feature combinations explained here, a profile roll tandem consisting of at least two profile roll assemblies, each forming a rolling pass and arranged along a pass line, appears advantageous. This tandem is characterized by the omission of rolling stock guides on the inlet side of the profile roll assemblies, between the profile roll assemblies, and / or on the outlet side of the profile roll assemblies in order to increase operational reliability. Such a configuration, particularly taking into account the process control explained above, enables a significantly simpler and less complicated construction of the profile roll tandem, which accordingly additionally increases operational reliability, since the rolling stock guides prevent any operational errors from occurring.

[0032] Furthermore, eliminating the need for rolling stock guides between the profile roller assemblies allows for a significantly closer arrangement of the respective profile roller assemblies, which are arranged along the fitting line, since no additional installation space is required for the rolling stock guides between the profile roller assemblies. Furthermore, the closer arrangement also means that an incoming workpiece, which is already guided by a first of the two profile roller assemblies, has less room to deviate from the fitting line or break off, which can ultimately lead to accidents.

[0033] Accordingly, regardless of whether rolling stock guides are provided or not, it is advantageous if each of the two profile roller arrangements can be assigned a maximum roll diameter and the two profile roller arrangements are spaced apart by less than half the larger of the two maximum roll diameters. It is then irrelevant whether rolling stock guides are also provided between these two profile roller arrangements. On the other hand, it is understood that, in particular, corresponding rolling stock guides can be dispensed with, which then provides additional advantages to the ones already explained above.

[0034] Accordingly, regardless of the other combinations of features explained here, it is advantageous if a profile roller tandem comprising at least two profile roller arrangements of profile rollers, each forming a rolling caliber and arranged along a fitting line, is characterized in that a maximum roller diameter is assigned to each of the two profile roller arrangements and these are spaced apart from one another by less than half the larger of the two maximum roller diameters in order to increase operational reliability.

[0035] By dispensing with rolling stock guides or by arranging the two profile roller arrangements very closely, the number of threading operations can be minimized or the risk of such threading operations going wrong can be reduced to a minimum in a profile roller tandem, particularly if the tandem is otherwise designed accordingly and the process control is otherwise selected appropriately.

[0036] First, it is assumed that each profile roll arrangement can be assigned a maximum roll diameter, which does not necessarily have to be adhered to by the respective rolls provided there. Structurally, the maximum roll diameter of a profile roll arrangement is limited, for example, by the maximum stroke permitted for the respective rolls. The distance to other units, such as tie rods, rolling stock guides or similar arrangements located near the rolls, and other structural conditions can also limit or determine the maximum roll diameter for which a particular profile roll arrangement is suitable. On the other hand, this does not mean that the associated profile roll arrangement must also be arranged with corresponding rolls with the maximum roll diameter.Rather, it is conceivable that in a specific application, rollers with smaller roller diameters may also be used if this appears advantageous.

[0037] First of all, it seems sufficient to define the spacing between the profile roller assemblies if this spacing is defined by the respective maximum associated roller diameters. On the other hand, it is also conceivable for the two profile roller assemblies to each have rollers with a corresponding maximum roller diameter, so that the actual diameter of the rollers intended for the respective application of the associated profile roller assemblies can be used as a measurement. In this case, it appears advantageous if the two profile roller assemblies are spaced from each other by less than half the larger of the two maximum roller diameters.

[0038] In particular, it is even conceivable for the two profile roller arrangements to be spaced apart by less than a quarter of the sum of the two maximum roller diameters, whether these maximum roller diameters are defined by actually existing rollers or by an assignment or design of the respective profile roller arrangements. In particular, if the two profile roller arrangements are spaced apart by less than a quarter of the sum of the maximum roller diameters, the risk of the rolled stock breaking away between the two profile roller arrangements can be further minimized, even if rolled stock guides are then dispensed with. This very dispensing with guides may then also create the necessary installation space for the two profile roller arrangements to be arranged so closely one behind the other along the fitting line.

[0039] In particular, the two profile roller assemblies can be spaced apart by less than 0.2 times, preferably less than 0.1 times, the sum of the two maximum roller diameters, which means that the adjacent profile rollers of the two respective profile roller assemblies almost touch each other when rollers with the respective maximum permissible roller diameters are used. Such a small spacing between the profile roller assemblies further reduces the risk of the rolled stock breaking out, which accordingly increases the possibility of dispensing with rolled stock guides, especially between the profile roller assemblies. This also further reduces the risk of accidents, as already explained above.

[0040] Irrespective of the combination of features explained here, a reversing profile rolling process using at least one profile roller arrangement forming a roll pass consisting of profile rollers which have a forming effect on a rolled stock, wherein the rolled stock passes the profile rollers in a first pass with a first rolling direction and is thereby formed, the rolling direction is then reversed and the rolled stock passes the profile rollers in a second pass with a second rolling direction which is opposite to the first rolling direction and is thereby formed, can be characterized in that the rolling speed of the rolled stock is changed during the forming.This approach allows the forming influence of the rolls to be varied, which is particularly advantageous during reversing or at the start of the forming process if, for example, the rolled stock does not come into contact with the rolls over its entire length. This can happen, for example, if the rolls are first guided between the profile rolls with an extended pass and only then are these positioned against the rolled stock for forming, or if at least one or more of the profile rolls remain in contact with the rolled stock during reversing. Depending on the specific process, reversing can then be carried out more reliably, as abrupt changes in direction can be avoided.When the reversal points are reached, whether these are selected points in the process or specific positions in the area of ​​the respective rolling stock ends, the rolling speed can be reduced to facilitate reversal. With appropriate process control, changing the rolling speed of the rolling stock during forming also makes it possible to avoid threading processes and thus increase operational reliability.

[0041] To ensure that a change in rolling speed can be carried out as reliably as possible, it is advantageous if the respective speed is determined by a speed-determining device. In particular, position measuring devices can be provided, either cumulatively or alternatively, to measure the position of a rolling stock end during forming, so that the movement sequence of the rolling stock is sufficiently known and / or can be adequately controlled, especially before reversing.

[0042] Accordingly, a profile roll arrangement comprising profile rolls having an input side and an output side, forming a roll pass and arranged along a pass line, proves to be advantageous if it is provided with a speed determination device for determining the rolling speed of the rolling stock and / or with position measuring means for measuring the position of a rolling stock end of the rolling stock during forming in order to increase operational reliability accordingly.

[0043] Ultimately, any device capable of determining the rolling speed of rolled stock can be advantageously used as a speed-determining device. In particular, these can be microwave measuring devices, infrared measuring devices, radar measuring devices, but also acoustic measuring devices. Likewise, an arrangement of light barriers or an arrangement of position measuring devices, which are provided along the pass line and can measure the position of the roll end, can be used to determine the speed. The accuracy of the speed determination can then be selected accordingly by adjusting the spacing of the corresponding position measuring devices, insofar as a closer spacing can also provide a correspondingly narrower measurement accuracy interval for the speed.

[0044] Suitable position measuring devices include, in particular, light barriers, but also the aforementioned radar or microwave measuring devices. If necessary, the position measuring devices or the speed measuring device can also operate tactilely, for example, through contact with rollers, especially if these do not have a deforming effect, such as the rollers of an input or output roller conveyor. If necessary, the rollers themselves or their rotational speed can also be used to determine the speed, as long as any elongation is taken into account accordingly.

[0045] In particular, as already arranged above, the speed measuring device can comprise positioning means, possibly the position measuring means used for position measurement, which has the particular advantage that both the speed and the position are known with sufficient accuracy. Depending on the specific requirements, for example, the rotational speed of rollers or cylinders or the results of supplementary speed measurements can be used in addition to the position measurements in order to be able to monitor the reversing process even more precisely.

[0046] Not only a single profile roller arrangement but also a profile roller tandem or an arrangement of several profile roller arrangements arranged along a pass line can be provided with speed detection devices or position measuring means in order to achieve corresponding advantages.

[0047] In this context, it should be mentioned that, in general, the two profile roll assemblies, or even three or more profile roll assemblies, can have a common rolling stand, particularly if this is designed as a profile roll tandem. In particular, a common tandem stand, and particularly preferably a common tandem stand housing, can serve to arrange the two profile roll assemblies of a profile roll tandem, or even several profile roll assemblies of a profile roll tandem. This enables the common rolling stand or the common stand housing to jointly absorb the rolling forces of the profile roll assemblies, which proves to be particularly effective and stable. Furthermore, the common rolling stand also enables a very close structure and spacing of the profile roll assemblies, as already described above as being advantageous.

[0048] In order to guide the rolled stock between the two profile rolls during an extended pass or to introduce the rolled stock, in particular at the start of a corresponding rolling process, the pass can be extended such that the rolled stock does not touch at least one of the profile rolls, preferably all of the profile rolls of the associated profile roll arrangement. In particular, it is also conceivable for the rolled stock to rest loosely on one, two or more, but in particular on all, of the lower profile rolls in order to guide the rolled stock between the two profile rolls during an extended pass or to introduce the same, so that the lower profile roll or rolls support the rolled stock or serve as a support during this process. In this way, the risk of accidents can be reduced to a minimum.

[0049] If several profile roll arrangements are present, it may be sufficient if the rolled material only touches one of the profile rolls of each of the rolling stands or each of the 10 respective profile roll arrangements, since then no rolling forces are applied, so that the risk of serious accidents is not so great.

[0050] In a specific advantageous process, the lower profile rolls of the respective profile roll arrangement are first adjusted in the direction of the pass line after the rolled stock has passed through it, so that the lower rolls already come into supporting contact with the rolled stock, even though no rolling forces are applied until the rolled stock has reached the last roll stand. Only then, in an exemplary and advantageous process, can all rolls be adjusted against the rolled stock to initiate the forming process. It goes without saying that, depending on the specific requirements, slightly different process configurations are also conceivable without deviating from the basic idea that the rolled stock is first guided between the profile rolls with an extended pass and only then is the latter adjusted against the rolled stock for forming.

[0051] Preferably, the rolling speed is controlled, especially regulated, during forming. This allows, in particular, a targeted change in the rolling speed. Likewise, the movement sequence of the rolled stock can be controlled during reversing.

[0052] In this case, the control or regulation of the rolling speed can be carried out in particular as a function of the position of the rolling stock in relation to the profile roller arrangement, which enables a controlled movement sequence in particular during reversing and can preferably be implemented metrologically by position measurements of at least one of the rolling stock ends.

[0053] In particular, the rolling speed can be continuously reduced before reversing and continuously increased after reversing, allowing the reversing process to proceed smoothly, reliably, and in a controlled manner. As a result, the rolling speed is reduced to zero before reversing, then reversed, and then increased again. In a vectorial formulation of the rolling speed, this means that the rolling speed undergoes a zero crossing during reversing. This zero crossing can thus be used to define the reversal of the direction of movement accordingly.

[0054] Accordingly, it is advantageous if the rolled stock remains in contact with at least one of the profile rolls, preferably with several and in particular with all of the profile rolls, during the reversal of the direction of movement. It is particularly advantageous if the rolled stock is also formed during the reversal of the direction of movement and thus during or immediately after the reversal. With suitable process control, in particular with suitable adjustment of the rolls or with suitable adjustment of the roll pressure, an attempt can be made in particular to counteract any artifacts that may be caused by the rolled stock not passing all of the rolls of a profile roll arrangement in the area of ​​its ends, so that certain areas do not immediately pass through all of the roll passes or pass past all of the rolls, for example by increasing the roll pressure accordingly.

[0055] In concrete implementation of the process sequence, the pass can be changed during forming, preferably depending on the position of the rolled stock in relation to the profile roll arrangement. This can be achieved in particular by a targeted reduction or a targeted enlargement. A reduction, i.e. a smaller roll pass, may be desired, for example, directly before reversing in order to counteract the aforementioned artifacts. Accordingly, an enlargement, i.e. a larger roll pass, may be desired if, after reversing, areas of the rolled stock reach the profile roll arrangement that have already been rolled by another profile roll arrangement or in a previous pass, so that a correspondingly high level of forming is no longer necessary.

[0056] A change in the pass can be advantageous, particularly in connection with a reduction in the rolling speed or during this time, as already explained above.

[0057] As already explained above, the rolling speed of the rolled stock can be measured. Alternatively, or in addition to this, it is advantageous to determine the rolling speed of the rolled stock during forming, rather than measuring it directly. This can be achieved, for example, by comparing position measurements, by determining or calculating the rolling speed from the local positions of the respective rolling stock ends.

[0058] The rolling speed of the rolling stock can also be measured directly by corresponding rollers in contact with the rolling stock. This makes it possible, in particular, to compare such measurements with the position of the rolling stock or with the positions of the rolling stock end at defined points in time. While position measurements are generally relatively accurate, the rolling speed can ultimately only be extrapolated between these position measurements.

[0059] Direct measurements, such as measurements via idle rollers, can be more prone to errors in this regard, especially when considering the adverse environmental conditions that exist in the area of ​​profile rollers. Such adverse environmental conditions also have a negative impact on direct speed measurements, which can be made using light beams, microwaves, or radar, for example. Here, too, it may be advisable to compare such measurements with position measurements.

[0060] In addition to this, it is also conceivable to calculate the rolling speed of the rolling stock from the rotation speed of the profile rollers in order to then compare the calculation result with the position or positions of a rolling stock end at defined times and in this way to know exactly the movement sequence, in particular during the reversal of the direction of movement or during reversing, and to be able to control it precisely if necessary.

[0061] Particularly with an odd number of passes, the present profile rolling process can be easily integrated into a rolling mill or a more comprehensive rolling process, since the rolled stock then enters one side, is then rolled in reverse according to the number of passes, and then exits in the other direction, so that a defined entry and exit side are present and successive workpieces can be rolled quickly.

[0062] Depending on the specific process, at least two profile roll assemblies consisting of profile rolls, each forming a 30-gauge roll, can be arranged along the pass line, as already explained above, with the rolled stock initially being guided between the profile rolls of both profile roll assemblies with an extended pass and only then are these positioned against the rolled stock for forming. This also applies in particular if more than two profile roll assemblies are provided, with the rolled stock preferably then being guided between the profile rolls of all profile roll assemblies with an extended pass and only then are these positioned against the rolled stock for forming. On the other hand, it is also conceivable, as already indicated above, that individual rolls are already positioned against the rolled stock once the rolled stock has passed over them, in order to enable a type of intermediate guidance of the rolled stock during insertion.Once the rolled material has passed through all profile roller arrangements, all profile rollers can be adjusted accordingly against the rolled material and rolling forces can be applied.

[0063] Likewise, if at least two profile roll arrangements of profile rolls, each forming a rolling pass, are arranged along the pass line, the rolled stock can remain in contact with at least one of the profile rolls of both, and if more than two profile roll arrangements are arranged along the pass line, all, profile roll arrangements during reversing, in order to reliably minimize the risk of accidents.

[0064] It is understood that the features of the solutions described above or in the claims may also be combined if necessary in order to be able to implement the advantages cumulatively.

[0065] Further advantages, objects, and features of the present invention will become apparent from the following description of exemplary embodiments, which are particularly illustrated in the accompanying drawings. In the drawings:

[0066] Figure 1 shows a first profile roller arrangement during the introduction of rolled material in a schematic side view;

[0067] Figure 2 shows the first profile roller arrangement at the start of forming in a schematic side view;

[0068] Figure 3 shows a schematic side view of the first profile roller arrangement during forming; Figure 4 shows a schematic side view of the first profile roller arrangement during reversing;

[0069] Figure 5 shows a second profile roller arrangement before the introduction of rolled material in a schematic side view;

[0070] Figure 6 shows the second profile roller arrangement during the introduction of rolled material in a schematic side view;

[0071] Figure 7 shows the second profile roller arrangement when adjusting the profile rollers in a schematic side view;

[0072] Figure 8 shows the second profile roller arrangement shortly before reversing in a schematic side view;

[0073] Figure 9 shows the second profile roller arrangement during reversing in a schematic side view;

[0074] Figure 10 shows the second profile roller arrangement shortly after reversing in a schematic side view;

[0075] Figure 11 shows the second profile roller arrangement during reversing in a schematic side view;

[0076] Figure 12 shows the second profile roller arrangement shortly after reversing in a schematic side view;

[0077] Figure 13 shows the second profile roller arrangement during run-out in a schematic side view;

[0078] Figure 14 shows a third profile roller arrangement in a schematic side view.

[0079] The first profile roller assembly 20 shown in Figures 1 to 4 comprises a top roller 22 and a bottom roller 23, each designed as a profile roller 21. It is understood that at least one of the rollers 22, 23 can also be designed as a universal roller, i.e., with a cylindrical cross-section, if a rolled stock 10 to be formed is to be profiled accordingly.

[0080] The rolls 22, 23 are arranged in a rolling stand 40 and can be adjusted in an adjustment direction 36 in the direction of a fitting line 30 which runs essentially parallel to a rolling direction 31 between the rolls 22, 23 or between the profile rolls 21.

[0081] The fitting line 30 is an idealized line through the profile roller arrangement 20, which - depending on requirements - can also be defined in a parallel offset, in particular. For example, the fitting line 30 can also be defined with respect to the surface of an input roller entrance 48 or an output roller conveyor 49, as indicated by way of example in Figures 5 to 14. Depending on the specific position of the fitting line 30 with respect to the rollers 22, 23, an adjustment of a profile roller 21 in the direction of the adjustment direction 36, with which the rolling caliber, i.e. the space remaining between the profile rollers 21 for the rolling stock 10 during rolling, is to be reduced, can also point away from the fitting line 30 if this fitting line 30 is defined as tangential to or intersecting the corresponding profile roller 21.Irrespective of this, in this case, adjustment in the adjustment direction 36 is referred to as such as long as the corresponding movement of the associated profile roller 21 leads to a reduction in the rolling caliber. Otherwise, the term "adjustment" is used, which then means a direction for the movement of the profile roller 21 opposite to the adjustment direction 36.

[0082] The rolling stock 10 to be rolled has two rolling stock ends 11 with respect to the pass line 30 or with respect to the rolling direction 31, at each of which the rolling stock 10 ends. Depending on the rolling direction 31, the rolling stock end 11 located in the rolling direction 31 can also be referred to as the rolling stock beginning or rolling stock head. Insofar as reversing 5 is important in this case, the resulting reversal of the direction of movement renders the distinction between the rolling stock end 11 and the rolling stock beginning irrelevant.

[0083] Naturally, the rolled stock 10 can initially only enter between the rolls 22, 23 of the profile roll arrangement 20 from one side, with precisely this side being defined as the input side 33. The other side, which then follows the profile roll arrangement 20 along the pass line 30, is accordingly referred to as the output side 34. On the other hand, it is conceivable that, for example, if an even number of passes or an odd number of reversals take place, the rolled stock 10 can ultimately leave the profile roll arrangement 20 again at the input side 33 after rolling. To distinguish between the two sides, however, the above definition of input side 33 and output side 34 is adhered to in order to be able to distinguish between these two sides accordingly below.In order to profile a rolled stock 10, the rolled stock 10 is guided with its rolled stock end 11 along the pass line 30 during the extended pass - and preferably during the extended pass such that the rolled stock 10 does not touch the two rolls 22, 23 or the two profile rolls 21 - between the two profile rolls 21 or between the rolls 22, 23, as is shown by way of example in Figure 1.

[0084] In a deviating process, it is conceivable that the rolled stock 10 is placed relatively loosely only on the lower roll 23, as long as the upper roll 22 is spaced far enough from the rolled stock 10 that the rolled stock 10 does not touch the upper roll 22, even if its rolling stock end 11 reaches or passes the area between the rolls 22, 23. This too can significantly reduce the risk of a breakdown. Even if both the upper roll 22 and the lower roll 23 come into contact with the rolled stock 10 during insertion between the profile rolls 21 or between the rolls 22, 23, the risk of a breakdown can be significantly minimized if the pass between the rolls 22, 23 is expanded and, for example, no forming force or only extremely low forming forces act on the rolled stock 10.

[0085] If the rolling stock 10 is guided between the profile rollers 21 or between the rollers 22, 23, as indicated in Figure 1, the rollers 22, 23 or the two profile rollers 21 are adjusted against the rolling stock for forming, which takes place in the adjustment direction 36 of the profile rollers 21, as is also indicated in Figure 1.

[0086] The rolling process then begins, firstly by applying a rolling force by adjusting the profile rollers 21 and secondly by displacing the profile rollers 21 or the rollers 22, 23 in a rotation direction 37, so that the rolled stock 10 is rolled in the rolling direction 31 from the input side 33 to the output side 34 along the pass line 30. In this case, a forming zone 32 is created in the rolled stock 10, initially only in the area of ​​the rolled stock end 11, in which the rolled stock 10 is formed according to the rolling caliber provided by the profile rollers 21. As shown in Figure 3, the rolling stock 10 passes through the rolling groove left between the two rolls 22, 23 or between the profile rolls 21 along the pass line 30 in the rolling direction 31 until the rolling stock end 11, which is directed opposite to the rolling direction 31, is reached.

[0087] Before the rolling stock 10 loses contact with the two rollers 22, 23 or with the two profile rollers 21, the direction of movement is reversed, i.e., the rolling process is reversed, as indicated by way of example in Figure 4. In this case, a small area of ​​the rolling stock preferably remains in the forming zone 32, as indicated by way of example in Figure 4.

[0088] Depending on the specific process control, the two profile rollers 21 or the upper roller 22 and the lower roller 23 are adjusted even further against the rolling stock 10 when the direction of movement is reversed, although processes are also conceivable in which adjustment for the second pass does not appear necessary if, for example, this is only used for calibration.

[0089] Depending on the specific process, the adjustment of the profile rollers 21, or the upper roller 22 and the lower roller 23, against the rolling stock during a reversal of the direction of movement, i.e., during reversing, can already occur at the end of the first pass, i.e., before the direction of movement is reversed. Likewise, over-adjustment or oversteering can occur while the direction of movement is being reversed to counteract any artifacts that may be caused, for example, by changes in the rolling speed.

[0090] Depending on the specific process, the respective speed can be controlled or regulated depending on the position of the rolling stock 10 or the position of one or more of the rolling stock ends 11. In particular, depending on the specific process, it is conceivable to continuously change the rolling speed during rolling, which appears particularly advantageous shortly before or after reversing.

[0091] Depending on the specific process, the number of passes or reversals of motion can vary. Even a single reversal of motion can be considered a reversing profile rolling process. As already explained above, the rolled stock then runs out toward the entry side, which may not be desirable. Accordingly, at least three passes or at least two reversals of motion appear advantageous, although more passes or reversals of motion can certainly be performed if this appears advantageous. An odd number of passes or an even number of reversals of motion results in the rolled stock 10 leaving the profile rolling arrangement 20 toward the exit side 34.

[0092] The profile roller arrangements 20 of Figures 5 to 14 also each have profile rollers 21 or upper and lower rollers 22, 23, it being understood that in deviating embodiments, also based on these embodiments, the profile rollers 21 can also be aligned somewhat differently or that the horizontal rollers shown in the present embodiments are supplemented or replaced by vertical rollers.

[0093] In the profile roller arrangements 20 shown in Figures 5 to 14, several profile roller arrangements 20 are arranged one behind the other along the fitting line 30, so that they form a profile roller tandem 19.

[0094] Here, the respective profile roller arrangements 20 are spaced apart by a roller distance 38, which is significantly smaller than the roller diameter 35 of the respective profile rollers 21 or upper and lower rollers 22, 23, as shown by way of example in Figure 5. Depending on the specific implementation, the roller distance 38 can be less than 0.1 times the sum of the roller diameters 35 of adjacent rollers 21, 22, 23 or profile roller arrangements 20 or even the smallest roller diameter 35 of adjacent rollers 21, 22, 23 or

[0095] Profile roller arrangements 20. Thus, the profile roller arrangements 20 of the profile roller tandem 19 according to Figure 14 are arranged as closely as possible one behind the other along the fitting line 30, which means that in the case of the most unfavorable adjustment of the rollers, only a safety distance is left between the respective rollers, which must remain due to manufacturing tolerances.While in the exemplary embodiment shown in Figures 5 to 13 it is ultimately irrelevant whether the respective profile roll assemblies 20 of the profile roll tandem 19 are arranged in a common rolling stand 40, which is indicated in this regard by the dashed line, or whether separate rolling stands 40 are provided for the two profile roll assemblies 20 arranged along the fitting line 30, it is already graphically established in Figure 14 for the exemplary embodiment according to Figure 14 that the profile roll assemblies 20 of this exemplary embodiment share a rolling stand 40 with a common frame wall 41. It is understood that in deviating embodiments, further profile roll assemblies 20 can also be provided along the fitting line 30, which share common rolling stands 40 or have individual or separate rolling stands 40. If necessary, intermediate forms can also be provided in this regard.

[0096] A rolling stand in which at least two, but also several, profile roller arrangements 20 are arranged one behind the other along the fitting line 30 and which also share a common support wall 41 is also referred to as a tandem stand.

[0097] With regard to the further design of the arrangements according to Figures 5 to 14, these essentially correspond, so that they are also described together below with regard to their process sequence.

[0098] The arrangements shown in Figures 5 to 14 are each assigned an input side 33 and an output side 34, which are designated in accordance with the explanations already given for the first embodiment.

[0099] An input roller conveyor 48 is provided on the input side 33, while the arrangements illustrated in Figures 5 to 14 have an output roller conveyor 49 on the output side 34. It is understood that the previously explained nomenclature regarding the input side 33 and the output side 34 also applies in this regard. Furthermore, in different output configurations, it is conceivable that one of the roller conveyors 48, 49 is omitted or that other devices are provided instead, which enable the rolling stock 10 to enter or exit, such as robot arms or carrying carriages.

[0100] These arrangements, shown in Figures 5 to 14, have position measuring devices 51 on both the input side 33 and the output side 34, which in these embodiments are designed as light barriers. Depending on the specific implementation, other position measuring devices 51, such as microwave sensors, radar sensors, laser sensors, or even tactile sensors, can also be used at this point, provided that sufficient information about the respective position can be determined thereby.

[0101] The position measuring means 51 or light barriers shown as examples in the figures are aligned in such a way that they can reliably measure the presence of rolling stock 10 in the area of ​​the light barriers, so that the passage of a rolling stock end 11 through a light barrier or past a position measuring means 51 can be detected as an interruption of the light beam or as the release of the corresponding light beam.

[0102] In these embodiments, the position measuring means 51 are connected to a speed determination device 50, which can determine the speed of the rolling stock 10 from the temporal sequence of the signals provided by the position measuring means 51.

[0103] Depending on the specific implementation, the rotational speed of the rollers of one or both roller conveyors 48, 49 can be used cumulatively or alternatively to determine the speed. It is also conceivable to use the rotational speed of the profile rollers 21 cumulatively or alternatively to make a corresponding determination. In particular, it is conceivable, for example, to only measure the rotational speed of the last roller on the roller conveyors 48, 49, facing the profile rollers 21, in order to obtain information about the speed of the rolled stock 10.

[0104] Preferably, the information mentioned above or information from other devices is used cumulatively to determine the speed of the rolling stock 10 as accurately as possible. In this way, the movement sequence, as described in more detail below, can be monitored, controlled, or regulated as precisely as possible.

[0105] Depending on the specific implementation, the position of the position measuring devices 51 can be selected appropriately. For example, the density of individual position measuring devices 51 can be increased, particularly in the area of ​​the profile roller assemblies 20. It may also be advantageous to provide a position measuring device 51 in the area of ​​the rolling pass, or immediately in front of it, in order to be able to determine the process point at which a reversal of movement should occur as precisely as possible.

[0106] If a rolled stock 10 is now fed to the profile roller arrangements 20 with an inlet direction 31 A, these are, as already explained in detail above, initially adjusted with an extended pass so that the rolled stock 10 can pass between the profile rollers 21 with as little damage as possible, as is shown by way of example in Figures 5 and 6.

[0107] If this is the case, as indicated in Figure 6, which can be ensured, for example, by the incoming rolling stock end 11 having just reached a position measuring device 51 in the region of the profile roller arrangement 20 following in the inlet direction 31A, the profile rollers 21 are adjusted in the adjustment direction, as indicated in Figure 6.

[0108] Thereafter, the rollers are accelerated in a rotation direction 37 and the rolling process is initiated, so that the rolling stock 10 is rolled in the rolling direction 31, as shown by way of example in Figures 7 and 8.

[0109] Depending on the specific process control, the transition between the process steps, as shown in Figures 5 to 7, can also be made with the first profile roller arrangement 20 already being engaged before the rolling stock 10 has reached its position shown in Figures 6 and 7. It is also conceivable for the rollers to already be rotating before they come into contact with the rolling stock 10. When the rolling stock end 11 opposite the rolling direction 31 (see Figure 8) reaches the first profile roller arrangement 20 in the rolling direction 31 (see Figure 8), the direction of movement is reversed, as shown by way of example in the transition between Figures 8, 9 and 10.

[0110] At the time point illustrated in Figure 9, the profile rollers 21, or the upper roller 22 and the lower rollers 23, are further adjusted in the adjustment direction 36 for the backcut, so that the roll caliber for the backcut is correspondingly smaller. Then, the rolling direction 31 is reversed, with the rotation direction 37 also being reversed accordingly, as exemplified by a comparison of Figures 8 and 10 with respect to the rotation direction 37.

[0111] Even with this reversal of the direction of movement, the transition to the individual process steps can occur relatively abruptly, as at the beginning of the rolling process. On the other hand, the transition can also be smooth, so that when the rolling stock 11, as shown by way of example in Figure 8, has not yet fully reached the first profile roller arrangements 20 in the rolling direction 31, the rolling caliber of the first profile roller arrangements 20 is already slightly reduced to account for the fact that this last portion of the rolling stock 10 will no longer reach the second profile roller arrangement 20 before the reversal of the direction of movement occurs.

[0112] It goes without saying that, in this context too, smooth transitions can be provided between the extreme possibilities described if this appears to be expedient from a process engineering perspective. In particular, it is also conceivable, for example, for the rolled stock 10 to be rolled beyond the arrangement shown in Figure 9, along the pass line 30 in the direction of the second profile roller arrangement 20, so that contact with the first profile roller arrangement 20 is lost before the change in direction of movement occurs. To avoid accidents, in such a case, for example, the pass of the first profile roller arrangement 20, which is then no longer in contact with the rolled stock 10, can also be extended until, after the reversal of direction of movement 17, the rolled stock has also reached this profile roller arrangement 20 with the extended pass, so that the rollers 21, 22, 23 of this profile roller arrangement 20 can then be started up again.

[0113] The arrangement in Figures 11 and 12 corresponds approximately to the arrangement in Figures 9 and 10—only mirrored in terms of movement, whereby these figures illustrate a second reversal of the rolling direction 31. It is understood that corresponding reversals of the direction of movement can now occur as required until the rolled stock 10 is completely rolled and leaves the arrangements illustrated in Figures 5 to 14 in an exit direction 31B, as shown exemplarily in Figure 13 via the exit roller conveyor 49. As already explained above, the latter can also occur toward the entry side 33 if this appears appropriate due to the number of passes.

[0114] List of reference symbols:

[0115] 10 Rolled goods 34 Output side

[0116] 11 Rolled stock end 35 roll diameter

[0117] 19 Profile roller tandem 36 Direction of adjustment of the profile roller

[0118] 37 Direction of rotation of the profile roller

[0119] 20 profile roller arrangement 38 roller spacing

[0120] 21 profile roller

[0121] 22 Top roll 40 Roll stand

[0122] 23 Lower roller 41 Stud wall

[0123] 48 Input roller conveyor

[0124] 30 Pass line 49 Exit roller conveyor

[0125] 31 Rolling direction

[0126] 31A Inlet direction 50 Speed ​​determination input

[0127] 31 B Outlet direction

[0128] 32 Forming zone 51 Position measuring device

[0129] 33 Entrance page

Claims

Patent claims:

1. Reversing profile rolling process using at least one profile roller arrangement (20) forming a rolling groove consisting of profile rollers (21) which act in a forming manner on a rolled stock (10), wherein the rolled stock (10) passes the profile rollers (21) in a first pass with a first rolling direction (31) and is thereby formed, then the rolling direction (31) is reversed and the rolled stock (10) passes the profile rollers (21) in a second pass with a second rolling direction (31) which is opposite to the first rolling direction (31) and is thereby formed, characterized in that (i) that the rolling stock (10) is first guided between the profile rollers (21) with an extended pass and only then are these positioned against the rolling stock (10) for forming; and / or (ii) that the rolling stock (10) remains in contact with at least one of the profile rollers (21) during reversing; and / or (iii) that the rolling speed of the rolled material is changed during forming.

2. Profile rolling process according to claim 1, characterized in that for guiding the rolling stock (10) between the two profile rollers (21) with an extended pass, the pass is extended such that the rolling stock (10) does not touch at least one of the profile rollers (21), preferably all of the profile rollers (21) of the profile roller arrangement (20) or all of the profile rollers (21).

3. Profile rolling method according to claim 1 or 2, characterized in that the rolling stock (10) remains in contact with all profile rollers (21) of the profile roller arrangement (20), preferably with all of the profile rollers (21), during reversing.

4. Profile rolling method according to one of claims 1 to 3, characterized in that the rolling speed is controlled during the forming process, preferably as a function of the position of the rolling stock (10) with respect to the profile roller arrangement (20).

5. Profile rolling process according to one of claims 1 to 4, characterized in that the rolling speed is reduced before reversing and increased after reversing.

6. Profile rolling method according to claim 5, characterized in that the rolling stock (10) remains in contact with at least one of the profile rollers (21) during the reversal of the direction of movement.

7. Profile rolling method according to claim 5 or 6, characterized in that the rolling stock (10) is formed during the reversal of the direction of movement or immediately thereafter.

8. Profile rolling method according to one of claims 1 to 7, characterized in that the pass is changed, preferably reduced or increased, during the forming, preferably depending on the position of the rolling stock (10) with respect to the profile roller arrangement (20).

9. Profile rolling method according to one of claims 1 to 8, characterized in that the rolling speed of the rolling stock (10) is determined during the forming, preferably calculated from the rotational speed of the profile rollers (21) and the calculation result is compared with the position or positions of a rolling stock end (11) at defined times.

10. Profile rolling process according to one of claims 1 to 9, characterized by an odd number of passes.

11. Profile rolling process according to one of claims 1 to 10, characterized in that at least two rolling grooves each forming a rolling groove Profile roller arrangements (20) comprising profile rollers (21) are arranged along the fitting line (30), and in that the rolling stock (10) is first guided between the profile rollers (21) of both, preferably all, profile roller arrangements (20) during an extended fitting, and only then are these positioned against the rolling stock (10) for forming, and / or the rolling stock (10) remains in contact with at least one of the profile rollers (21) of both, preferably all, profile roller arrangements (20) during reversing.

12. Profile roller arrangement (20) comprising profile rollers (21) forming a rolling caliber and arranged along a pass line (30) and having an input side (33) and an output side (34), characterized by a speed determination device (50) for determining the rolling speed of a rolling stock (10) and / or position measuring means (51) for measuring the position of a rolling stock end (11) of the rolling stock (10) during forming.

13. Profile roller arrangement (20) according to claim 12, characterized in that the speed determining device (50) comprises the position measuring means (51).

14. Profile roller tandem (19) comprising at least two rollers each forming a rolling caliber and arranged along a pass line (30) Profile roller arrangements (20) according to claim 12 or 13.

15. Profile roller tandem (19) comprising at least two rollers each forming a rolling caliber and arranged along a pass line (30) Profile roller arrangements (20) made of profile rollers (21), characterized in that (i) that rolling stock guides are dispensed with on the input side of the profile roller arrangements (20), between the profile roller arrangements (20) and / or on the output side of the profile roller arrangements (20); and / or (ii) that the two profile roller arrangements (20) are each assigned a maximum roller diameter (35) and that these are less than half of the larger of the two maximum roller diameters (35) are spaced apart (38).

16. Profile roller tandem (19) according to claim 15, characterized in that the two profile roller arrangements (20) each have a maximum roller diameter (35) and are spaced apart (38) from one another by less than half the larger of the two maximum roller diameters (35).

17. Profile roller tandem (19) according to claim 15 or 16, characterized in that the two profile roller arrangements (20) are spaced from each other by less than a quarter of the sum of the two maximum roller diameters (35), preferably by less than 0.1 times this sum.

18. Profile roller tandem (19) according to one of claims 14 to 17, characterized in that the two profile roller arrangements (20) have a common rolling stand (40) and are preferably arranged in a common tandem stand, in particular in a common tandem stand stand.

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