EP2666560A1 - Straightening machine with adjustable support roll mounts - Google Patents

Abstract

The straightening machine (1) has a conveying path through which a metallic material (6) is passed in a conveying direction (7) by an upper straightening roller and a lower straightening roller (3). The straightening rollers are formed such that the straightening rollers are adjustable in an angle deviating from the perpendicular angle relative to the metallic material. The straightening rollers are deflectable such that the size of the deflection of the straightening rollers in the conveying direction of metallic material decreases.

Description

The invention relates to a straightening machine for planarizing metallic material, in particular metal strips and sheets, which passes through the straightening machine in a conveying direction along a conveying path. The invention is particularly directed to the adjustment of the support roller carriers which are used in such straightening machines.

Unplaned metallic material, in particular metal strips and sheets, which is provided for example with edge, center and / or longitudinal shafts, must be planed before it is further processed, for example by punching, etching or bending. The leveling happens in a straightening machine. It comprises a plurality of straightening rollers which together define a conveying path on which a metallic material to be straightened for planarizing can be guided past the straightening rollers, wherein it is bent alternately. The term "rolling" is sometimes used in the literature instead of "planar". While the term "leveling" emphasizes the result of the straightening process, namely, a flat, flat good, the term "rolling straightening" indicates that this process is carried out by straightening rolls. In the context of the present application, the two terms are synonymous.

When straightening metallic material such as metal strips, the actually planned zones must be so far in the longitudinal direction of the metal strip stretched until they reach the length of the wavy zones. Only when all sections of the entire band have the same length, the band can also be flat. This is achieved by the metal strip running in a direction of passage through a straightening machine and is alternately bent around straightening rolls.

A distinction between driven straightening machines, in which one or more straightening rollers are driven so as to promote the material to be straightened in the direction of passage, and towed (non-driven) straightening machines in which the material to be straightened pulled by means of a towing device along the conveying path between the straightening rollers becomes. In driven straightening machines, the material to be straightened is subjected to shear forces by means of straightening rollers, with which it is moved between the straightening rollers. Thin metal strips, in particular metal strips with a thickness of less than 1.2 mm, generally have an insufficient strength for this, so that they can usually only be faced with towed straightening machines. Thick tapes are thus planed in driven straightening machines, whereas with thin or very thin tapes, planing is only possible with straightening machines or stretch-bending straightening machines in which the belt is pulled under high tension through the non-driven straightening machine. The present invention is suitable for both driven and trailed straightening machines.

Depending on the application, a different number of straightening rollers is required. In general, flat straightening rolls are required for planarizing thick stock rather than thinner metallic stock. For leveling, a straightening machine has two sets of straightening rolls, an upper set and a lower set. The upper set usually has a straightening roller less than the lower one, in rare cases more straightening rollers are used at the top. The upper straightening rollers are arranged on center division to the lower or vice versa. Be the top leveling rollers lowered so deep that they dip between the lower straightening rollers or lie at most by the thickness of the metal strip (the sheet thickness) on the lower straightening rollers, the band undergoes a transitional bending when passing through the conveying path between the straightening roller sets.

A curvature present in the metal strip prior to planarizing results in a lower elongation at a bend in the direction of its curvature, and a greater elongation at a bend counter to its curvature direction. In this way, in planing an existing curvature or waviness is removed by a series of alternating bends. Accordingly, straightening machines are also referred to as rolling or roller straightening machines or, when the metal strip is subjected to tension during straightening, as stretch-bending straightening machines.

Due to the alternating bending in the straightening machine, possibly with superposed tension, plastic states over the entire strip thickness and thus a straightening effect are achieved with thin metal straps. Another effect is that the stress distribution of the residual stresses in the metal strip over the cross section is very low and uniform. In parallel straightening rollers results in this uniform distribution of stress over the entire width of the metal strip.

The straightening forces occurring during straightening try to deflect the straightening rolls away from the material web. For this reason, the straightening rollers are deposited on their length in mostly regular intervals with so-called support rollers which are shorter or substantially shorter than the straightening rollers. While the upper straightening rolls are usually arranged parallel (unbent) to the metal strip, the lower straightening rolls can be bent to support and enhance the straightening process with adjustable support rolls. In rare cases, the lower straightening rollers are arranged parallel (unbent) to the metal band and the upper straightening rollers can be bent with adjustable support rollers.

The deflection of the straightening rolls takes place in that the associated support rollers are either raised or lowered. If e.g. the central support rollers of the lower straightening rollers are adjusted, so that the lower straightening rollers take an upward arc, the lower straightening rollers also dive to different degrees between the upper straightening rollers. As a result, the middle tracks of the material to be straightened experience a higher bending load and stronger directivity. This is based on the following two factors. On the one hand, the path of the tracks is longer, they have to travel around the straightening rollers in contrast to the adjacent tracks, so that they are subject by the longer path of a higher extension. On the other hand, the deeper immersion of the straightening rolls in the central area results in a larger bend. The metal strip is stretched at these points more strongly between the upper and lower straightening rollers and thus also places more strongly on the straightening rollers.

Another reason for this type of employment of the straightening rolls by means of support rollers is that the metal strip undergoes mutual bends as mentioned above. The residual stress remaining in the metal strip is, according to common theory, the greater, the stronger the final bending taking place in the leveler, or the greater the differences between the individual alternating bends during planishing. This residual tension, which remains in the metallic material after planarizing, becomes apparent during mechanical separation of the directed metal strip or during etching of the surface due to deviations from the flatness.

According to the prior art, the straightening machines are carried out with support roller carriers, in which by means of support roller bearings, the support rollers are mounted for supporting the straightening rollers. The support rollers are essential shorter than the straightening rolls, measured transversely to the metal strip or transversely to the conveying direction of the metal strip. Thus, a plurality of support roller carriers can be arranged side by side under the leveling rolls, at right angles to the leveling rolls and parallel to the longitudinal direction of the metal strip or in the conveying direction of the metal strip. These support roller carriers are so long that each of the straightening rollers from the straightening machine inlet side to the straightening machine outlet side are jointly supported by a support roller carrier by a support roller carrier. The upper support roller carriers are usually firmly mounted. The lower support roller carriers can be adjusted hydraulically, electromotively or manually to deflect the lower straightening rollers. In rare cases, the upper support roller carriers can be adjusted while the lower ones are fixed.

The support roller adjustment, i. the adjustment of the support roller carrier, for example, with a hydraulically actuated wedge slide. The support roller carriers are held in position with guides in the longitudinal direction in their position, so that they can be used when setting on e.g. do not move a wedge or under a material train, and the support roller carrier is always adjusted perpendicular to the metal strip and thus all support rollers of a support roller carrier are always adjusted perpendicular to the metal strip and the straightening rollers are bent perpendicular to the metal strip.

The bending of the lower straightening rolls thus happens according to the prior art for all lower straightening rollers from the straightening machine inlet side to the straightening machine outlet side by the same amount, which is predetermined by the displacement of the support roller carrier. This is disadvantageous because it means that when leaving the leveler the metal strip experiences a different deformation over the bandwidth, and consequently the material properties are also different across the bandwidth.

So far, the flatness requirements and the uniform stresses and properties of metal straightening straps have not usually been so high, so planing with conventional straightening machines was sufficient. However, the increasing quality requirements for metal strips with directional properties, which have very uniform properties after straightening, can no longer be met with conventional straightening machines. With the hitherto customary versions of leveling machines, it is therefore not possible to meet very high demands on the flatness and the very uniform properties of the plan-oriented metal strip.

In the document DE 10 2009 012 929 B3 has been proposed a straightening roller system comprising two straightening machines, the second straightening machine is arranged in the direction of passage of the metal strip behind the first straightening machine, so that the straightened with the straightening roll Good first passes through the first straightening machine and then the second straightening machine. The first leveler is provided with a support roller adjustment and thus responsible for the leveling, the second preferably has no support roller adjustment, ie in the second, the straightening rollers are preferably always aligned parallel (unbent) to the metal strip. Thus, the above-described disadvantage can be avoided and the very high demands on the flatness and the very uniform properties of the plan-oriented metal strip can be met. The metal bands are directed in the first straightening machine and can experience a much more uniform tensile and bending stress in the second straightening machine than in the first straightening machine, in particular an absolutely equal tensile and bending stress in the embodiment without support roller adjustment in the second straightening machine, therefore it can also a more uniform stress distribution over the cross section can be achieved. This increases the accuracy of the leveling and the tolerances of the material parameters the straightened metal band after straightening are reduced. However, the entire straightening roller system is long and expensive due to the series of two straighteners.

Based on this prior art, the present invention seeks to provide a compact straightening machine can be met with the increasingly high demands on the flatness of straightened metal strip with very uniform properties after straightening.

This object is achieved by a leveler with the features of claim 1. Preferred embodiments and developments of the invention will become apparent from the dependent claims and the following description with accompanying drawings.

A straightening machine according to the invention for planarizing metallic material, in particular metal strips and sheets, which passes through the straightening machine in a conveying direction along a conveying path, the straightening machine having an upper straightening roller set with a plurality of upper straightening rollers, which is arranged above the conveying path, and a lower straightening roller set with a plurality lower straightening rollers, which is arranged below the conveying path opposite to the upper straightening roller set, the straightening rollers each of a straightening roller set extending transversely to the conveying direction and arranged successively in the conveying direction, opposite to a gap between juxtaposed straightening rollers of a straightening roller each a straightening roller of each other set of straightening rollers is arranged to be straightened Good on the defined by the straightening rollers, extending between the upper and lower straightening roller conveyor in the Förd erection can be guided past the leveling rolls, wherein it is alternately bent by the leveling rolls, the straightening machine has upper and / or lower support rollers on which straightening rollers of the upper or lower leveler set are mounted with their tread, the support rollers are mounted in upper and lower support roller bearings, the leveler has upper and / or lower adjustable support roller carrier, in which upper or . Lower support rollers are mounted with upper and lower support roller bearings, wherein in each case in the conveying direction consecutive support rollers are mounted together with their support roller bearings in an adjustable support roller carrier, and the adjustable support roller carrier with the support rollers mounted therefrom for bending the respectively mounted straightening rollers by lifting and / or lowering by means of a Stützrollenträgerverstelleinrichtung in a Stützrollenträgerverstellrichtung to the metallic material or away from the metallic Good are adjustable, has the peculiarity that the straightening machine adjustable St supporting roll carrier, which are designed such that their adjustment by Stützrollenträgerverstelleinrichtungen, which are designed as Stützrollenträgerneigungsverstelleinrichtungen, in a deviating from the vertical angle to the metallic Good is performed, the Stützrollenenträgerneigungsverstelleinrichtungen are designed such that their adjustment the straightening rolls in the manner are bendable, that the size of the deflection of the straightening rolls decreases in the conveying direction of the metallic material.

The invention is based on the finding that it is advantageous to design the support roller support adjustment devices in such a way that the adjustment of the associated adjustable support roller supports can not be carried out by means of a support roller support stroke adjustment device perpendicular to the metallic material, but by means of a support roller support adjustment device at an angle deviating from the perpendicular, wherein the Stützrollenträgerneigungsverstelleinrichtungen are designed such that by their adjustment the straightening rollers in the Way are deflectable, that the size of the deflection of the straightening rolls decreases in the conveying direction of the metallic material.

The invention has the advantage that in a compact straightening machine a support roll carrier adjustment is possible in such a way that the metallic good, e.g. a metal strip in the area of the machine inlet can be directed as before with a greater deflection of the straightening rollers, and in the machine outlet with a lower than the machine inlet lower deflection of the straightening rollers an absolutely equal tensile and bending stress of the directed material and thus a more uniform stress distribution over the Cross section of the metal strip can be obtained, so that the tolerances of the material parameters of the metallic material can be reduced after straightening.

Figur 1

einen schematischen Längsschnitt durch einen oberen und einen unteren Richtwalzensatz einer Richtmaschine mit der Wechselbiegung eines metallischen Gutes,

Figur 2

in einer Einzelheit zu Figur 1 das Biegen des metallischen Gutes über eine untere Richtwalze,

Figur 3

einen Schnitt durch das metallische Gut von Figur 2,

Figur 4

in einer Einzelheit zu Figur 1 das Biegen des metallischen Gutes über eine obere Richtwalze,

Figur 5

einen Schnitt durch das metallische Gut von Figur 4,

Figur 6

eine perspektivische Ansicht eines Beispiels eines Metallbandes mit Randwellen,

Figur 7

die Biegelinien der oberen und unteren Richtwalzen einer Richtmaschine zum Korrigieren eines Metallbandes mit Randwellen gemäß Figur 7,

Figur 8

einen Querschnitt durch eine Richtmaschine mit verstellbaren unteren Stützrollen,

Figur 9

einen Teillängsschnitt durch eine Richtmaschine mit verstellbaren unteren Stützrollen nach dem Stand der Technik, und

Figur 10

einen Teillängsschnitt durch eine erfindungsgemäße Richtmaschine mit verstellbaren unteren Stützrollen.

The invention will be explained in more detail with reference to embodiments shown in the figures. The features described therein may be used alone or in combination with each other to provide preferred embodiments of the invention. Identical or equivalent parts are denoted by the same reference numerals in the various figures and usually described only once, although they can be used advantageously in other embodiments. Show it:

FIG. 1

a schematic longitudinal section through an upper and a lower leveling roll set of a leveler with the alternating bending of a metallic material,

FIG. 2

in a detail too FIG. 1 the bending of the metallic material over a lower straightening roller,

FIG. 3

a section through the metallic good of FIG. 2 .

FIG. 4

in a detail too FIG. 1 the bending of the metallic material over an upper straightening roller,

FIG. 5

a section through the metallic good of FIG. 4 .

FIG. 6

a perspective view of an example of a metal strip with edge waves,

FIG. 7

the bending lines of the upper and lower straightening rollers of a straightening machine for correcting a metal strip with edge waves according to FIG. 7 .

FIG. 8

a cross section through a straightening machine with adjustable lower support rollers,

FIG. 9

a partial longitudinal section through a leveler with adjustable lower support rollers according to the prior art, and

FIG. 10

a partial longitudinal section through a straightening machine according to the invention with adjustable lower support rollers.

The FIG. 1 shows a schematic longitudinal section through a leveler 1. This illustration applies equally to a straightening machine according to the prior art as well as for a straightening machine according to the invention. The upper straightening rollers 2 form an upper straightening roller set 4 and the lower straightening rollers 3 form a lower straightening roller set 5. The upper straightening roller set 4 usually has one straightening roller 2 less than the lower straightening roller set 5, but in rare cases more straightening rollers are used in the upper straightening roller set 4 2 used as in the lower leveling roll 5.

The straightening rollers 2, 3 each of a straightening roller set 4, 5 are arranged side by side. The upper straightening roller set 4 and the lower straightening roller set 5 are arranged opposite one another, wherein a straightening roller 3, 2 of the respective other straightening roller set 5, 4 is arranged opposite to a gap between adjoining straightening rollers 2, 3 of a straightening roller set 4, 5. The upper straightening rollers 2 are usually arranged at the center of the lower straightening rollers 3.

When planarizing passes through the metallic Good 6, such as a metal strip or a sheet, the leveler 1 in a conveying direction 7 along a conveying path. The straightening rollers 2, 3 each of a straightening roller set 4, 5 are arranged transversely to the conveying direction 7 and arranged in succession in the conveying direction 7. The upper leveler set 4 comprises a plurality of upper straightening rollers 2 and is arranged above the conveying path. The lower leveler set 5 also includes a plurality of lower straightening rollers 3, which are arranged below the conveying path opposite to the upper leveling roller set 4. Between the upper leveling set 4 and the lower leveling set 5 of the conveying path runs. When passing through the straightening machine 1 on the conveying path, the metallic material 6 is guided past the straightening rollers 2, 3 in the conveying direction 7 on the straightening rollers 2, 3 defined by the straightening rollers 2, 3, between the upper and lower straightening roller sets 4, 5, wherein there is an alternating bending learns, ie alternately bent by straightening rollers 2, 3. The goods to be straightened 6 can be transported or conveyed by means of one or more driven straightening rollers 2, 3 and / or by means of a towing device, not shown, along the conveying path between the straightening rollers 2, 3.

The distance between opposing leveling rolls 2, 3 increases continuously in the conveying direction 7 and thus the bending of the metallic material 6 in the conveying direction 7 decreases continuously. The metal strip 6 to be straightened is therefore bent more on the inlet side 8 of the conveying path than on the outlet side 9. If the upper straightening rolls 2 are lowered so deeply that they dip between the lower straightening rolls 3 or at most the thickness of the metal strip 6, ie the sheet thickness lie over the lower straightening rollers 3, the metal strip 6 experiences when passing through the conveying path between the two straightening roller sets 4, 5 a Sequence of alternating bends with increasing radius of curvature. In this way, in planing a curvature or waviness existing in the product 6 is removed by a series of alternating bends around straightening rolls 2, 3.

This process is in the FIGS. 2 and 3 shown for a lower straightening roller 3. The FIG. 2 shows in a detail FIG. 1 the bending of the metallic material 6 via a lower straightening roller 3 and the FIG. 3 shows a section through the metallic Good 6 of FIG. 2 , When bending over a lower straightening roller 3, the outer edge zone 10 of the metal strip 6 to be straightened, which in this case is the upper edge zone 11 of the metallic material 6, experiences a tensile stress + σ, and the inner line seen from the straightening roller 3 Edge zone 12, which is the lower edge zone 13 of the metallic material 6 in this case, experiences a compressive stress -σ. If the external tensile stress + σ is so strong that it exceeds the elastic limit R _{e of} the material of the metallic material 6, this leads to a plastic deformation of the metallic material 6 in the outer edge zone 10 by stretching, wherein the neutral fiber 14 takes place only an elastic deformation.

At the next straightening roll, the metal strip is bent in the other direction and thus stressed and stretched on its other side to train. This process is in the FIGS. 4 and 5 for an upper straightening roller 2 shown. The FIG. 4 shows in a detail FIG. 1 the bending of the metallic material 6 via an upper straightening roller 2 and the FIG. 5 shows a section through the metallic Good 6 of FIG. 4 , When bending over an upper straightening roll 2, the outer edge zone 10 of the metal strip 6 to be straightened, which in this case is the lower edge zone 13 of the metallic material 6, experiences a tensile stress + σ, and the inner surface seen by the straightening roll 2 Edge zone 11, which in this case is the upper edge zone 12 of the metallic material 6, experiences a compressive stress -σ. If the external tensile stress + σ is so strong that it exceeds the elastic limit R _{e of} the material of the metallic material 6, this leads to a plastic deformation of the metallic material 6 in the outer edge zone 10 by stretching, wherein the neutral fiber 14 takes place only an elastic deformation.

The shorter tracks of the unplaned metal strip 6 lie closer to the straightening rollers 2, 3 than the wavy tracks. With the shorter webs, therefore, there is also a greater bending and thus also a greater elongation. Thus, the short webs of the metallic material 6 stretch in mutual or alternate bending around straightening rolls 2, 3 until they have reached the length of the wavy, unplaned webs. The band of metallic material 6 is then flat. This process is called "judging" or "planning".

The FIG. 6 shows a perspective view of an example of a metallic material 6 in the form of a metal strip 6 with edge waves before leveling with a straightening machine 1, through which it is conveyed in the conveying direction 7 and thereby plensedichtet. This illustration applies equally to a straightening machine 1 according to the prior art as well as to a straightening machine 1 according to the invention.

The FIG. 7 shows the bending lines of the upper straightening rollers 2 of an upper straightening roller set 4 and the lower straightening rollers 3 of a lower straightening roller 5 of a straightening machine 1 for Correcting such a metal strip with edge waves according to FIG. 6 , This illustration applies equally to a straightening machine according to the prior art as well as for a straightening machine according to the invention. The upper straightening rollers 2 are not bent in this example. The bending of the lower straightening rollers 3 is shown exaggerated for clarity. The lower straightening rollers 3 are in the middle, ie in the region of the middle Webs of the metallic material 6, raised in a direction toward the metallic Good 6 and outside, ie in the region of the edge tracks of the metallic material 6, lowered in a direction away from the metallic Good 6. As a result, the lower straightening rollers 3 dive deeper into the intermediate spaces between the upper straightening rollers 2 in the region of the middle tracks of the metallic straightener 2 than in the region of the edge straps of the metallic bar stock 6. The bending of the lower straightening rollers 3 is effected by adjustable support rollers, which are connected will be explained with the following figures.

In FIG. 8 is a cross section through a leveler 1 with an upper and a lower leveling roll set 4, 5 with upper and lower, advantageously horizontally arranged leveling rolls 2, 3 shown. This illustration applies equally to a straightening machine according to the prior art as well as for a straightening machine 1 according to the invention. It shows a straightening cassette with lower adjustable supports for the lower straightening rollers 3 in a section across the system axis.

The lower straightening rollers 3 are rotatably mounted at their ends in one or by means of a arranged on both sides of the conveying path lower bearing frame 15 and the upper straightening rollers 2 in an upper bearing frame 16. One side of the straightening rollers 2, 3 is usually referred to as the drive side and the other as the operator side. In this case, the bearings are usually summarized on each side of a leveling set 4, 5 in a common storage frame. In summary in this sense means that they serve together as a functional unit and / or are mounted on a common bottom plate 17, 18. Each bearing frame 15, 16 is usually mounted on the associated bottom plate 17, 18.

In order to move in planing the on the conveying path in the conveying direction 7 between the upper straightening rollers 2 and lower straightening rollers 3 metallic forces acting on the straightening rollers 2, 3 and prevent bending of the straightening rollers 2, 3 or to selectively adjust the deflection of the straightening rollers 2, 3, the straightening rollers 2, 3 are mounted over their length on a plurality of shorter support rollers 20, 19. Upper support rollers 20 for upper straightening rollers 2, lower support rollers 19 for lower straightening rollers 3 or upper and lower support rollers 20, 19 may be provided. In the running direction of the metal strip along the conveying path, ie transverse to the straightening rollers 2, 3, the lower support rollers 19 are mounted in lower support roller bearings 21 and the upper support rollers 20 in upper support roller bearings 22. The straightening machine 1 thus has upper support rollers 20 and / or lower support rollers 19 on which straightening rollers 2, 3 of the upper straightening roller set 4 and the lower straightening roller set 5 are mounted with their running surface, wherein the support rollers 20, 19 in upper support roller bearings 22 and lower support roller bearings 21 are mounted. In the embodiment of FIG. 8 Both upper support rollers 20 and lower support rollers 19 are provided. Often located between the straightening rollers 2, 3 and their associated support rollers 20, 19 are not shown intermediate rollers, which prevent the raceways of the support rollers 20, 19 in the straightening rollers 2, 3 impress.

The combination of a leveling set 4 and 5 with straightening rollers 2 and 3, optionally including the support rollers 20 and 19 and any intermediate rollers with its associated two-sided bearing frame 15, 16 and the associated bottom plate 17, 18 is also referred to as straightening roller cassette. The upper and lower straightening roll cassette are collectively referred to as straightening cassette.

In the FIG. 8 shown straightening cassette can be part of a straightening machine 1 for planarizing metallic Good 6, in particular of sheets and metal strips. Such a leveler 1, in addition to the components described a number of others, for the Operation of necessary parts include, but are otherwise formed according to the prior art and therefore not described in detail. These may include, for example, a towing device for the material to be straightened 6, one or more drives for one or more straightening rollers 2, 3 or a feed device with which the distance between the two straightening roller sets 4, 5 can be adjusted according to the plate thickness belong.

The straightening machine 1 may generally comprise upper adjustable support roller carriers and / or lower adjustable support roller carriers 23, into which upper support roller bearings 22 and lower support roller bearings 21 for upper support rollers 20 and lower support rollers 19 for supporting the upper straightening rollers 2 and the lower straightening rollers 3, respectively , wherein in each case in the conveying direction 7 consecutive support rollers 19, 20 are mounted with their support roller bearings 21, 22 together in an adjustable support roller carrier 23, and the adjustable support roller carrier 23 with the support rollers mounted by them 19 and the integrated support roller bearings 21, wherein the support rollers 19 means the support roller bearings 21 are mounted in the adjustable support roller carriers 23, for bending the respectively mounted straightening rollers 3 by lifting and / or lowering by means of a Stützrollenträgerverstelleinrichtung in a Stützrollenträgerverstellrichtung second 5 are adjustable to the metallic material or away from the metallic material. The straightening rollers 2, 3 are thus mounted by means of the support rollers 19, 20 on the adjustable support roller carriers 23, and in leveling machines 1 without intermediate rollers 26 directly and in leveling machines 1 with intermediate rollers 26 indirectly via the intermediate rollers 26. In general, the lower straightening rollers. 3 and not the upper straightening rollers 2 bent by means of adjustable support rollers 19. Accordingly, in the embodiment of FIG. 8 only lower adjustable support roller carrier 23 for the lower straightening rollers 3 and provided for the lower support rollers 19 and lower support roller bearings 21, but no upper adjustable support roller carrier In other embodiments, this may be the other way round, ie only upper adjustable support roller supports for the upper straightening rollers 2 and for the upper support rollers 20 and upper support roller bearings 22 may be provided but no lower adjustable support roller carriers 23 may be provided for the lower straightening rollers 3 and lower support rollers 19 and lower support roller bearings 21, respectively, or both upper and lower adjustable support roller carriers may be provided.

In the embodiment of FIG. 8 Thus, the upper support rollers 20 are rigid, that is not adjustable, ie the upper support roller bearings 22 of the upper support rollers 20 are fastened, for example, to the upper base plate 18 or to a non-adjustable upper support roller carrier. The lower support rollers 19 are adjustable, ie the lower support roller bearings 21 of the lower support rollers 19 are integrated into an adjustable lower support roller carrier 23. The integration of a support roller bearing in a support roller support means that the support roller is mounted or fixed by means of a support roller bearing on a support roller carrier. This can be realized, for example, in that the support roller is rotatably mounted in the support roller carrier by means of a bearing received by the support roller carrier, or that the support roller is rotatably mounted on a stationary axle which is received by the support roller carrier. In both cases, the support roller bearing is integrated into the support roller carrier, because the support roller bearing is held by the support roller support or the support roller carrier receives the force exerted by the support roller on the support roller bearings forces, ie the support roller is mounted by means of integrated in the support roller support roller bearing in the support roller carrier. The support roller bearings, here the lower support roller bearings 21, can be integrated into adjustable or non-adjustable support roller carriers, here in the lower adjustable support roller carriers 23. Furthermore, guides for the adjustable support roller carrier, here lower guides 24 for the lower adjustable support roller carrier 23 may be provided.

The upper or lower support rollers 20, 19 are by means of adjustable support roller support, here the lower support rollers 19 by means of the lower adjustable support roller carrier 23, adjustable, ie they can by means of a in the FIG. 8 Stützrollenenträgerverstelleinrichtung not shown in a Stützrollenträgerverstellrichtung 25 perpendicular to the axis of the straightening rollers 2, 3, based on non-deflected straightening rollers 2, 3, are adjusted by the associated support roller carriers are adjusted. For metal bands according to the example of FIG. 6 and a bend line according to FIG. 7 the middle supports of the lower straightening rollers 3, ie the middle lower support rollers 19, raised by adjusting the lower adjustable support roller carrier 23 in the Stützrollenträgerverstellrichtung 25 stronger than the outer.

The invention is particularly directed to the Stützrollenträgerverstelleinrichtung for adjusting the adjustable support roller carrier. To explain this, is in FIG. 9 a partial longitudinal section through a leveler 1 with adjustable lower support rollers 19 and an adjustable lower support roller carrier 23 is shown. The FIG. 9 shows a lower straightening roller cassette with lower straightening rollers 3, lower support rollers 19, between the lower straightening rollers 3 and the lower support rollers 19 arranged intermediate rollers 26 and a lower adjustable support roller carrier 23 according to the prior art. The adjustable lower support roller carrier 23 is designed such that its adjustment by means of a Stützrollenträgerverstelleinrichtung, which is designed as Stützrollenträgerhubverstelleinrichtung, in a Stützrollenträgerverstellrichtung 25 perpendicular to the metallic Good 6 is feasible.

In the example of FIG. 9 the Stützrollenträgerhubverstelleinrichtung is designed as a wedge slide 27 with hydraulic cylinder 28, wherein means the wedge slide 27, the adjustable lower support roller carrier 23 in guides 29 of the support roller carrier 23 in the Stützrollenträgerverstellrichtung 25 can be raised or lowered. The Stützrollenträgerverstellrichtung 25 is always perpendicular to the metallic Good 6, ie the lower support rollers 19 and thus the lower straightening rollers 3 are raised or lowered by the same amount when adjusting the lower adjustable support roller carrier 23 from the straightening machine inlet side 8 to the straightening machine outlet side 9. The lower adjustable support roller carrier 23 is always moved parallel to the metallic Good 6 and the conveying path during its adjustment, so that the row of lower support rollers 19 remains parallel to the row of lower straightening rollers 3. A not shown here adjusting device according to the prior art for adjusting the upper straightening rollers or the upper support rollers would be according to the in FIG. 9 illustrated Stützrollenträgerhubverstelleinrichtung formed.

The FIG. 10 Shown is a lower straightening roller cassette with a lower bearing frame 15, lower straightening rollers 3, lower support rollers 19, between the lower straightening rollers 3 and the lower support rollers 19th arranged intermediate rollers 26 and a lower adjustable support roller carrier 23. The adjustable lower support roller carrier 23 is formed such that its adjustment is not as in FIG. 9 by means of a Stützrollenträgerverstelleinrichtung, which is designed as Stützrollenträgerhubverstelleinrichtung, perpendicular to the metallic Good 6 is feasible, but by means of Stützrollenenträgerverstelleinrichtung, which is designed as Stützrollenenträgerneigungsverstelleinrichtung, in a deviating from the vertical angle to the metallic Good 6 is feasible, so that the Stützrollenträgerverstellrichtung 25 in a deviating from the vertical angle to the metallic Good 6 runs. Here is the Stützrollenträgerneigungsverstelleinrichtung designed so that the lower straightening rollers 3 are deflectable by their adjustment in such a way that the size of the deflection of the lower straightening rollers 3 in the conveying direction 7 of the metallic material 6, ie decreases from the straightening machine inlet side 8 to straightening machine outlet side 9.

In the example of FIG. 10 the lower adjustable support roller carrier 23 is adjusted by means of a joint adjustment. For this purpose, the Stützrollenträgerneigungsverstelleinrichtung includes a Einlaufanstellvorrichtung 30 with an Anstellantrieb 31, which is designed for lifting and / or lowering of the associated support roller carrier, here the lower support roller carrier 23, only in the region of the inlet side 8 of the leveler 1. In other embodiments, the Stützrollenträgerneigungsverstelleinrichtung could alternatively or additionally include a corresponding Auslaufanstellvorrichtung that is designed to raise and / or lowering the associated adjustable support roller carrier only in the area of the outlet side 9 of the leveler 1.

The straightening machine 1 may comprise adjustable support roller carriers, which are adjustable by means of a Stützrollenträgerneigungsverstelleinrichtung, wherein the adjustable support roller carrier are pivotally mounted in the region of the outlet side 9 of the leveler 1 by means of a hinge. In the embodiment of FIG. 10 the straightening machine 1 a lower adjustable support roller carrier 23 which is adjustable by means of a Stützrollenträgerneigungsverstelleinrichtung, namely the Einlaufanstellvorrichtung 30, wherein the lower adjustable support roller carrier 23 is pivotally mounted in the region of the outlet side 9 of the leveler 1 by means of a hinge 32. In preferred embodiments, the hinge 32 may have an axis of rotation about which the adjustable support roller carrier 23 can be pivoted, wherein the axis of rotation transversely to the conveying direction 7 and to the metallic Good 6, that is parallel to the longitudinal axes of the straightening rollers 3.

If the outlet-side joint 32 of the support roller carrier 23 is also provided with an adjusting device or adjusting device, the deflection of the straightening rollers 3 can also be regulated on the outlet side 9. This can be done depending on or independent of the deflection on the inlet side 8. In preferred embodiments, however, the Stützrollenträgerneigungsverstelleinrichtungen include no Auslaufanstellvorrichtung, which is designed for lifting and / or lowering an associated adjustable support roller support in the region of the outlet side 9 of the leveler 1, so that adjustable by means of Stützrollenenträgerneigungsverstelleinrichtungen support roller support in the region of the outlet side 9 of the leveler 1 by means of the joint 32 are pivotally mounted in a fixed position relative to the material 6 to be straightened.

By means of the Einlaufanstellvorrichtung 30, the adjustable lower support roller carrier 23 can be raised or lowered on the inlet side 8 of the leveler 1, wherein it is mounted on the outlet side 9 of the leveler 1 pivotally mounted in the joint 32. The Stützrollenträgerverstellrichtung 25 thus does not extend perpendicular to the metallic Good 6, but obliquely or curvy, as illustrated by the bow arrow. The lower support rollers 19 and thus the lower straightening rollers 3 are raised or lowered in this embodiment, when adjusting the lower adjustable support roller support 23 only on the straightening machine 8, but not on the straightening machine outlet side 9. The lower adjustable support roller support 23 is thus not parallel to the adjustment moved to the conveying path so that the row of the lower support rollers 19 is not parallel to the row of lower straightening rollers 3, but the lower adjustable support roller carrier 23 is pivoted in a Stützrollenträgerverstellrichtung 25 by an angle, wherein Stützrollenenträgerverstellrichtung 25 extends in a plane or the hint lies in a plane, on the one hand in the conveying direction 7 and on the other hand perpendicular to the metallic Good 6, that extends perpendicular to the straightening rollers 3.

In order to eliminate the disadvantage described above and to be able to produce directional metal strip with very uniform properties, the adjustable support roller carrier 23 according to the invention are no longer adjusted perpendicular to the material web of the metallic material 6. Rather, each adjustable support roller carrier 23, for example, at the outlet side 9 of the leveler 1 with a hinge 32, typically provided with a rotation axis. By raising or lowering the adjustable support roller carrier 23 at the machine inlet side 8 by means of an illustrated adjusting the straightening rollers 3 are bent. This employment can be done by means of a spindle, a wedge or other common in the art device for path adjustment, for example hydraulically, by electric motor or manually. Thus, this deflection of the straightening rollers 3 is now strongest on the inlet side 8 and decreases towards the outlet side 9. Ideally, the last straightening rollers 3 on the outlet side 9 are always aligned in parallel and without deflection.

A Stützrollenträgerneigungsverstelleinrichtung not shown here for adjusting the upper straightening rollers 2 and the upper support rollers 20 would be according to the in FIG. 10 formed Stützrollenträgerneigungsverstelleinrichtung, ie the described inventive features can be applied to both the lower leveling set 5 and the upper leveling set 4. In advantageous embodiments of straightening machines 1 according to the invention, either the upper straightening rollers 2 have no or only rigid, non-adjustable support rollers 20 and the lower straightening rollers 3 a Stützrollenträgerneigungsverstelleinrichtung, or the lower straightening rollers 3 have no or only rigid, non-adjustable support rollers 19 and the upper straightening rollers. 2 a Stützrollenträgerneigungsverstelleinrichtung on.

The employment of the adjustable support roller carrier 23 can be provided with a force measurement, by means of which the contact force per support roller carrier 23 can be measured and regulated. For this purpose, the straightening machine 1 may comprise at least one Stützrollenträgerneigungsverstelleinrichtung having a force measuring device 33 for measuring the force exerted by the associated adjusting device 30 on the associated adjustable support roller carrier 23 Anstellkraft. In FIG. 10 This force measuring device 33 is integrated in the inlet adjustment device 30. This adjusting force is composed of the weight and possible deformation force of the straightening rollers 2, 3 and the straightening force exerted by the straightening rollers 2, 3 on the metallic Good 6.

In a further advantageous embodiment, it can be provided that the straightening machine 1 comprises a control device with which by means of the force measuring device 33, the adjustment of the adjustable support roller carrier 23 with the Stützrollenträgerneigungsverstelleinrichtungen is adjustable. In this case, the control device for controlling the Stützrollenenträgerneigungsverstelleinrichtungen be formed in such a way that a minimum, applied by the adjusting device 30 on the associated adjustable support roller support 23 pitch (and thus straightening force) does not fall below and / or a maximum, from the adjusting device 30 to the assigned adjustable support roller carrier 23 applied contact force (and thus straightening force) is not exceeded and / or that automatically maximum flatness of the metallic material 6 is achieved. By determining or measuring the contact force per support roller carrier 23 can namely be determined exactly when the support rollers 19 are no longer applied to the straightening rollers 3 above. This is logically the case when the contact force or the straightening force becomes very small or zero. This is important because in too weak employment, the support rollers 19 are no longer driven by the overlying straightening rollers 3, come to a standstill or too much slippage, ie a too large differential speed to the other support rollers 19 and straightening rollers 3 have. The result would be damage to the surface of straightening rollers 3, which in turn are transmitted to the material to be straightened 6 and there also lead to defects. This can be prevented with a force measurement or an automatic control. In addition, the force measurement of the supports or adjusting devices can be actively integrated into an automatic flatness control of the leveler 1.

A straightening machine 1 according to the invention may comprise driven and / or towed leveling rolls 2, 3. Furthermore, it may be advantageous if the straightening machine 1 is a stretch-bending straightening machine.

LIST OF REFERENCE NUMBERS

1

straightener

2

upper straightening roller

3

lower straightening roller

4

Upper leveling set

5

lower leveling set

6

metallic good

7

conveying direction

8th

inlet side

9

outlet side

10

outer edge zone

11

upper edge zone

12

inner border zone

13

lower edge zone

14

neutral fiber

15

lower bearing frame

16

upper bearing frame

17

lower floor plate

18

upper floor plate

19

lower support roller

20

upper support roller

21

lower support roller bearing

22

upper support roller bearing

23

Lower adjustable support roller carrier

24

bottom guide

25

Stützrollenträgerverstellrichtung

26

intermediate roll

27

wedge slide

28

hydraulic cylinders

29

guide

30

Einlaufanstellvorrichtung

31

adjusting drive

32

joint

33

Force measuring device

R _e

elastic limit

+ σ

train

-σ

print

Claims (12)

Straightening machine (1) for planarizing metallic material (6), in particular metal strips and sheets, which passes through the straightening machine (1) in a conveying direction (7) along a conveying path, wherein - The straightening machine (1) an upper straightening roller set (4) with a plurality of upper straightening rollers (2), which is arranged above the conveying path, and a lower straightening roller set (5) with a plurality of lower straightening rollers (3), which is below the conveying path opposite to the upper Straightening roller set (4) is arranged, - The straightening rollers (2, 3) each of a straightening roller set (4, 5) extending transversely to the conveying direction (7) and arranged in the conveying direction (7) in succession, - Is arranged opposite to a gap between juxtaposed straightening rollers (2, 3) of a straightening roller set (4, 5) in each case a straightening roller (3, 2) of the respective other straightening roller set (5, 4) - The material to be straightened (6) on the by the straightening rollers (2, 3) defined between the upper and lower straightening roller set (4, 5) extending conveying path in the conveying direction (7) on the straightening rollers (2, 3) is guided past, whereby it is alternately bent by the leveling rolls (2, 3), - The straightening machine (1) upper and / or lower support rollers (20, 19) on which straightening rollers (2, 3) of the upper or lower leveler set (4, 5) are mounted with its tread, wherein the support rollers (20, 19) in upper and lower Support roller bearings (22, 21) are mounted, the straightening machine (1) has upper and / or lower adjustable support roller carriers (23) in which upper and lower support rollers (20, 19) are mounted with upper and lower support roller bearings (22, 21), - In each case in the conveying direction (7) one behind the other support rollers (19, 20) with their support roller bearings (21, 22) are mounted together in an adjustable support roller carrier (23), and - The adjustable support roller carrier (23) with their supporting rollers (19, 20) for bending the respectively mounted straightening rollers (2, 3) by lifting and / or lowering by means of a Stützrollenträgerverstelleinrichtung in a Stützrollenträgerverstellrichtung (25) to the metallic Good ( 6) or away from the metallic material (6) are adjustable, characterized in that - The leveler (1) adjustable support roller carrier (23) which are designed such that their adjustment by Stützrollenträgerverstelleinrichtungen, which are designed as Stützrollenenträgerneigungsverstelleinrichtung, in a deviating from the vertical angle to the metallic Good (6) is feasible - The Stützrollenträgerneigungsverstelleinrichtungen are formed such that by their adjustment the straightening rollers (2, 3) are deflectable in such a way that the size of the deflection of the straightening rollers (2, 3) in the conveying direction (7) of the metallic material (6) decreases , Straightening machine (1) according to claim 1, characterized in that the Stützrollenträgerneigungsverstelleinrichtungen comprise a Einlaufanstellvorrichtung (30) for lifting and / or lowering the associated adjustable support roller carrier (23) is formed only in the region of the inlet side (8) of the leveler (1). Straightening machine (1) according to one of the preceding claims, characterized in that the Stützrollenträgerneigungsverstelleinrichtungen comprise a Auslaufanstellvorrichtung, which is designed for lifting and / or lowering the associated adjustable support roller carrier (23) only in the region of the outlet side (9) of the leveler (1). Straightening machine (1) according to one of the preceding claims, characterized in that it has adjustable support roller carriers (23) which are adjustable by means of a Stützrollenträgerneigungsverstelleinrichtung, wherein the adjustable support roller carrier (23) in the region of the outlet side (9) of the leveler (1) by means of a Joint (32) are pivotally mounted. Straightening machine (1) according to claim 4, characterized in that the joint (32) has an axis of rotation about which the adjustable support roller carrier (23) can be pivoted, wherein the axis of rotation transversely to the conveying direction (7) and to the metallic Good (6) , ie parallel to the longitudinal axes of the leveling rolls (2, 3). Straightening machine (1) according to claim 4 or 5, characterized in that the Stützrollenträgerneigungsverstelleinrichtungen comprise no Auslaufanstellvorrichtung, which is designed for lifting and / or lowering an associated adjustable support roller carrier (23) in the region of the outlet side (9) of the leveler (1), so the support roller carriers (23) which are adjustable by means of the support roller support pitch adjustment devices are pivotably mounted in the region of the outlet side (9) of the leveler (1) by means of the articulation (34) in a fixed position relative to the material (6) to be straightened. Straightening machine (1) according to one of the preceding claims, characterized in that either the upper straightening rollers (2) have no or only rigid, non-adjustable support rollers (20) and the lower straightening rollers (3) have a Stützrollenträgerneigungsverstelleinrichtung, or the lower straightening rollers (3) no or only rigid, non-adjustable support rollers (19) and the upper straightening rollers (2) have a Stützrollenträgerneigungsverstelleinrichtung. Straightening machine (1) according to one of the preceding claims, characterized in that it comprises at least one Stützrollenträgerneigungsverstelleinrichtung comprising a force measuring device (33) for measuring the of the associated adjusting device (30) on the associated adjustable support roller carrier (23) applied adjusting force. Straightening machine (1) according to claim 8, characterized in that it comprises a control device, by means of the force-measuring device (33), the adjustment of the adjustable support roller carrier (23) is adjustable with the Stützrollenträgerneigungsverstelleinrichtungen. Straightening machine (1) according to claim 9, characterized in that the control device for controlling the Stützrollenträgerneigungsverstelleinrichtungen is formed in such a way that a minimum, by the adjusting device (30) on the associated adjustable support roller support (23) applied contact force is not undershot and / or a maximum, by the adjusting device (30) on the associated adjustable support roller carrier (23) applied adjusting force is not exceeded and / or that automatically a maximum flatness of the metallic material (6) is achieved. Straightening machine (1) according to one of the preceding claims, characterized in that it is a stretch-bending straightening machine. Straightening machine (1) according to one of the preceding claims, characterized in that it comprises driven and / or towed leveling rolls (2, 3).

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