EP4005695A1 - Ensemble de rouleaux de tension pour une installation de dressage permettant de dresser une bande, installation de dressage, installation de laminage de correction et procédé de fonctionnement d'une installation de dressage - Google Patents

Ensemble de rouleaux de tension pour une installation de dressage permettant de dresser une bande, installation de dressage, installation de laminage de correction et procédé de fonctionnement d'une installation de dressage Download PDF

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Publication number
EP4005695A1
EP4005695A1 EP21210735.3A EP21210735A EP4005695A1 EP 4005695 A1 EP4005695 A1 EP 4005695A1 EP 21210735 A EP21210735 A EP 21210735A EP 4005695 A1 EP4005695 A1 EP 4005695A1
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EP
European Patent Office
Prior art keywords
keine
eine
roller
tensioning roller
tensioning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP21210735.3A
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German (de)
English (en)
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EP4005695B1 (fr
Inventor
Gert Mücke
Roger Lathe
Julian KREMEYER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BFI VDEH Institut fuer Angewandte Forschung GmbH
Original Assignee
BFI VDEH Institut fuer Angewandte Forschung GmbH
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Publication of EP4005695A1 publication Critical patent/EP4005695A1/fr
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Publication of EP4005695B1 publication Critical patent/EP4005695B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/05—Stretching combined with rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/06—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring tension or compression
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements
    • B21B39/082—Bridle devices

Definitions

  • the invention relates to a set of tension rollers for a straightening system for straightening a strip. Furthermore, the invention relates to a straightening system for straightening a strip. Furthermore, the invention relates to a re-rolling mill for re-rolling a strip. Furthermore, the invention relates to a method for operating a straightening system or a re-rolling stand system.
  • a strip treatment system with a pair of tensioning rollers in which the strip is guided over a tensioning roller of the pair of tensioning rollers and the tension on the strip is increased or decreased by the tensioning roller between the inlet to the tensioning roller and the outlet from the tensioning roller, with the tensioning roller having at least one on its circumference measuring sensor arranged on the tension roller for detecting the tension distribution in the belt.
  • a stretch-bending-straightening system with a feed means for feeding a strip-shaped material along a running direction into a high-drawing area and a low-drawing area, the low-drawing area being downstream of the high-drawing area in the moving direction.
  • a bending-straightening unit is provided, which is arranged in the high-tension area.
  • at least one measuring system for determining a first measured value in the high-tension area is known. Provision is made for at least one additional measuring system to be provided for determining a second measured value in the pull-down area.
  • the invention was based on the object of proposing a set of tension rollers for a leveling system for leveling a strip or for a re-rolling stand system for re-rolling a strip, which when used in a leveling system allows the strip to be leveled or re-rolled better when it is used in a re-rolling stand system can be.
  • the invention is based on the basic idea that a tensioning roller of the tensioning roller set, as in EP 1 789 211 B1 proposed to be in the form of a flatness measuring roller, with the tensioning roller set being developed further according to the invention such that a drive is provided for the second tensioning roller, with which a torque about the second roller axis can be applied to the second tensioning roller, but according to the invention the first tensioning roller is either designed without a drive or an auxiliary drive is provided for the first tensioning roller, with which a torque about the first roller axis can be applied to the first tensioning roller, but this auxiliary drive for the first tensioning roller is designed to be weaker than the drive for the second tensioning roller.
  • the first tensioning roller which is designed as a flatness measuring roller, is either designed without a drive or is only equipped with a weaker auxiliary drive, this measurement error can be avoided or reduced.
  • the strip can be straightened better, since the measurement results of the flatness measuring roller are better.
  • the re-rolling of the strip can be carried out better, since the measurement results of the flatness measuring roller are better.
  • the invention relates to a set of tension rollers for a straightening system for straightening a strip. It is to be expected that the advantages of the invention will already be achieved with a set of rollers which has only a first tensioning roller and a second tensioning roller. According to the invention, however, the tensioning roller set preferably has a first tensioning roller, a second tensioning roller and a third tensioning roller, particularly preferably a fourth tensioning roller and even more preferably a fifth tensioning roller and very particularly preferably a sixth tensioning roller.
  • the first tensioning roller is a flatness measuring roller which has a force sensor for measuring a radial force exerted on the peripheral surface of the flatness measuring roller.
  • the set of tensioning rollers has a plurality of flatness measuring rollers, as is the case, for example, in DE 10 2019 006 788 is described.
  • the set of tensioning rollers has only a single flatness measuring roller. This limitation to a single flatness measuring roller within the set of tension rollers means that the effort required for the set of tension rollers can be reduced.
  • the flatness measuring roller can be configured according to the in DE 42 36 657 A1 described measuring roller or according to the type in DE 196 16 980 A1 described measuring roller or according to the type in DE 102 07 501 C1 described measuring roller or according to the type in DE 20 2007 001 066 U1 described measuring roller or according to the type in EP 1 469 955 B1 be executed described measuring roller. Furthermore, the measuring roller according to the in WO2020/120328 A1 or by type of in WO2020/120329 A1 be executed described measuring roller.
  • the measuring roller has a measuring roller body.
  • the measuring roller body preferably has a closed peripheral surface.
  • the metering roller body is a solid roller extending along a longitudinal axis.
  • a full roller is understood to mean a measuring roller body that is in one piece and whose shape was produced either with a primary shaping process, for example casting, and/or whose geometric shape was produced by a cutting process, in particular by machining, in particular by turning, drilling, milling or grinding from a one-piece semi-finished product will be produced.
  • the measuring roller pins arranged on the front side of the measuring roller for the rotatable mounting of the measuring roller are also part of the one-piece body.
  • the main part of the measuring roller body is designed as a cylindrical full roller, which has a cover arranged on the front side, on which the measuring roller pins are designed.
  • the measuring roller body can, for example, like the one in 3 the DE 20 2014 006 820 U1 executed measuring roller body be formed, in which the measuring roller body is formed with molded pin and over the measuring roller body a jacket tube is pushed.
  • the measuring roller does not have a jacket tube, but is designed as a solid roller.
  • the measuring roller body consists of individual disks arranged next to one another, as is the case, for example, in DE 26 30 410 C2 will be shown.
  • the measuring roller body of the measuring roller preferably has a closed peripheral surface.
  • the measuring roller body is designed as a solid roller and all the recesses provided in the measuring roller body are designed in such a way that no recess leads from the recess to the peripheral surface.
  • the recesses are particularly preferably guided axially and have an opening on one end face of the measuring roller body, or transverse channels are provided within the measuring roller body, which lead from the recess radially further into the interior of the measuring roller body, for example to a collecting channel in the center of the measuring roller body.
  • a closed peripheral surface of the measuring roller body can also be achieved in that in embodiments in which the respective recess has a recess leading in the direction of the peripheral surface, this is closed by a closure element.
  • a closure element can be a casing tube that completely surrounds a base body of the measuring roller body, as for example in FIGS 3 and 4 of the DE 10 2014 012 426 A1 shown.
  • the closure element can also be in the manner of in DE 197 47 655 A1 be formed cover shown.
  • the measuring roller does not have a jacket tube, but is designed as a solid roller, either as such in which no recess leads from the recess to the peripheral surface, or as such in which the respective recess has a recess leading in the direction of the peripheral surface is, but which is closed by a closure element, such as a cover.
  • a closure element such as a cover.
  • coatings for example the peripheral surface of a solid roller or the peripheral surface of a casing tube, are conceivable, for example to reduce friction or to protect the strip-shaped material to be guided over the measuring roller.
  • At least one recess is provided in the measuring roller body of the measuring roller. It has been shown that the advantages of the invention can already be achieved with a single recess in the measuring roller body. It is thus conceivable in the case of the flatness measurement to provide information about the flatness of the strip-shaped material guided over the measuring roller once per revolution of the measuring roller.
  • the measuring roller body has a plurality of recesses.
  • the recesses are designed at the same radial distance from the longitudinal axis of the measuring roller body.
  • all of the recesses are distributed equidistantly from one another in the circumferential direction.
  • a first group of recesses is provided, which is particularly preferred are arranged at the same radial distance from the longitudinal axis and equidistantly distributed in the circumferential direction, and in which, in addition to this first group of recesses, at least one further recess is provided which is designed differently in terms of its radial distance from the longitudinal axis than the recesses of the first group and /or does not have the same distance in the circumferential direction from the other recesses as the other recesses have from one another.
  • a measuring roller with regard to the flatness measurement like a measuring roller of the prior art, for example like that from FIG DE 102 07 501 known full role or the off DE 10 2014 012 426 A1 known measuring rollers, but then to provide these measuring rollers of the prior art with a further recess outside the grid for further equipment, with which a different measurement is carried out, for example.
  • the recesses mentioned in this paragraph are preferably those that run in the axial direction of the measuring roller body.
  • the measuring roller has a single recess and all the force sensors of the measuring roller are arranged in a single recess, for example in a single axially running recess.
  • the measuring roller body has a closed peripheral surface and is closed off at each end by an end face.
  • the end faces are arranged at an angle of 90° to the peripheral surface.
  • the measuring roller has bearing journals.
  • the bearing journals are formed on the end faces.
  • the measuring roller body is cylindrical.
  • the measuring roller is designed with at least one recess in the measuring roller body, which is arranged at a distance from the peripheral surface, the recess not opening towards the peripheral surface, or no further recess continuing from the recess, for example no bore leading to the peripheral surface .
  • the recess leads from the peripheral surface into the interior of the measuring roller body, but is closed by a closure element.
  • the measuring roller in the embodiments in which the measuring roller is designed with a plurality of recesses in the measuring roller body, which are arranged at a distance from the peripheral surfaces, either all recesses are designed in such a way that no recess, e.g.
  • the closure element is a cover or, for example, a jacket tube.
  • a recess in the measuring roller body extends in a direction parallel to the longitudinal axis of the measuring roller body. If, according to a preferred embodiment, several recesses are provided in the measuring roller body, it is preferred that all recesses of the measuring roller body each extend in a direction parallel to the longitudinal axis of the measuring roller body.
  • the respective recess opens out at least at one of its ends, preferably at both of its ends, on an end face of the measuring roller body.
  • a recess ending on an end face of a measuring roller body can be closed by an end cap, with this end cap only closing this recess.
  • Embodiments are also conceivable in which the end face of the measuring roller body is completely closed by a cover, as for example in 1 and 2 , or Fig. 4 of the DE 10 2014 012 426 A1 shown.
  • the recess is elongate, "elongate” meaning that the recess is larger in a first direction (in the longitudinal direction of the recess) than in any direction perpendicular to this direction.
  • the extent of the elongate recess in the longitudinal direction is twice, or more preferably more than twice, greater than in any direction perpendicular to that direction.
  • the longitudinal direction of the recess encloses an angle with the longitudinal direction of the measuring roller body that is less than 75°, particularly preferably ⁇ 45°, particularly preferably ⁇ 30°, particularly preferably ⁇ 10°, particularly preferably ⁇ 5°.
  • the longitudinal direction of the recess is not perpendicular to the longitudinal axis of the measuring roller body. If - which would be conceivable in one embodiment - the longitudinal axis of the recess and the longitudinal axis of the measuring roller body do not intersect, the above-mentioned design rule applies to the projection of the longitudinal axis of the recess onto the plane that contains the longitudinal axis of the measuring roller body.
  • the projection of the longitudinal axis of the recess onto a plane containing the longitudinal axis of the measuring roller body is designed in such a way that the projection of the longitudinal direction of the recess coincides with the longitudinal direction of the measuring roller body encloses an angle which is less than 75°, particularly preferably ⁇ 45°, particularly preferably ⁇ 30°, particularly preferably ⁇ 10°, particularly preferably ⁇ 5°.
  • the longitudinal axis of the recess obviously does not intersect the longitudinal axis of the measuring roller body, nor does a projection of the longitudinal axis onto a plane containing the longitudinal axis of the measuring roller body intersect the longitudinal axis of the measuring roller body does not cut.
  • DE 20 2007 001 066 U1 a measuring roller with elongated recesses is shown, for example.
  • the flatness measuring roller has an axial bore running parallel to the first roller axis, with the force sensor being arranged in the axial bore.
  • the flatness measuring roller is no longer influenced by torsional forces, or only to a small extent.
  • This also role versions can be used in which the sensors are not only in radial bores, but also in axial bores, such as in the EP 1 469 955 A1 described, are used.
  • the flatness measuring roller has a surface coating.
  • the flatness measuring roller particularly preferably has a coating of tungsten carbide or chromium.
  • the surface coating can also be implemented as a rubber or polyurethane coating.
  • first tensioning roller and a second tensioning roller and, in the context of preferred embodiments, to a third tensioning roller, a fourth tensioning roller and sometimes even to a fifth and a sixth tensioning roller of a tensioning roller set.
  • the use of the ordinal numbers “first”, “second”, “third”, “fourth”, “fifth” and “sixth” does not necessarily mean, but only in a preferred embodiment, that the belt running through the tensioning roller set via the existing tensioning rollers in the Order of their ordinal numbers is performed, i.e. it is first guided over the first tension roller and then over the second tension roller, etc.
  • the invention is initially based on the finding that within a set of tensioning rollers there is a tensioning roller with a drive (the so-called “second tensioning roller") and, in addition, a flatness measuring roller referred to as the "first tensioning roller", which has no drive or is equipped with an auxiliary drive.
  • the invention does not specify the spatial position in which the first tensioning roller and the second tensioning roller are located in relation to one another. It is not absolutely necessary for achieving the advantages of the invention that the flatness measuring roller (the "first idler”) is the spatially first idler over which the strip runs as the strip enters the idler set.
  • the "second tensioning roller” is the tensioning roller that is immediately downstream of the flatness measuring roller (the “first tensioning roller”) in the direction of belt travel.
  • the flatness measuring roller (the “first tensioning roller”) is the last tensioning roller of a tensioning roller set or a tensioning roller arranged between the foremost tensioning roller and the last tensioning roller of a tensioning roller set.
  • further tensioning rollers possibly driven but also possibly non-driven tensioning rollers, are provided between the flatness measuring roller (the “first tensioning roller”) and the driven, second tensioning roller.
  • the second tensioning roller is the tensioning roller of the set of tensioning rollers, over which the belt is guided after it leaves the first tensioning roller, which is designed as a flatness measuring roller.
  • the first tensioning roller designed as a flatness measuring roller is the tensioning roller of the set of tensioning rollers, onto which the strip runs first when it enters the set of tensioning rollers.
  • this third tensioning roller is arranged downstream of the second tensioning roller in the direction of belt travel, particularly preferably immediately downstream.
  • this fourth tensioning roller is arranged downstream of the third tensioning roller in the direction of belt travel, particularly preferably immediately downstream.
  • this fifth tensioning roller is arranged downstream of the fourth tensioning roller in the direction of belt travel, particularly preferably immediately downstream.
  • this sixth tensioning roller is arranged downstream of the fifth tensioning roller in the direction of belt travel, particularly preferably immediately downstream.
  • the preferred arrangement of the individual tensioning rollers described in the previous paragraph is particularly suitable for embodiments in which the set of tensioning rollers according to the invention is to be arranged after a stretching zone or after a bending frame and there is a desire to document the level of flatness with which the strip passes through the stretching zone or .leaves the bending stand.
  • This preferred arrangement is also suitable for a set of tension rollers which is arranged downstream of a decoiler and there is a desire to document the level of flatness with which the strip leaves the coiler.
  • the first tensioning roller designed as a flatness measuring roller is the tensioning roller of the set of tensioning rollers, over which the strip is guided after it leaves the second tensioning roller.
  • the first tensioning roller designed as a flatness measuring roller is the tensioning roller of the set of tensioning rollers from which the strip runs last when it runs out of the set of tensioning rollers.
  • the first tensioning roller, designed as a flatness measuring roller is therefore the last tensioning roller of the set of tensioning rollers.
  • this third tensioning roller is arranged upstream of the second tensioning roller in the direction of belt travel, particularly preferably directly upstream.
  • this fourth tensioning roller is arranged upstream of the third tensioning roller in the direction of belt travel, particularly preferably directly upstream.
  • this fifth tensioning roller is arranged upstream of the fourth tensioning roller in the direction of belt travel, particularly preferably directly upstream.
  • this sixth tensioning roller is arranged upstream of the fifth tensioning roller in the direction of belt travel, particularly preferably immediately upstream.
  • the preferred arrangement of the individual tensioning rollers described in the preceding paragraph is particularly suitable for embodiments in which the tensioning roller set according to the invention is to be arranged in front of a take-up reel and there is a desire to document the level of flatness with which the strip is wound onto the take-up reel.
  • This preferred arrangement is also suitable for a tension roller set that is to be arranged in front of a stretching zone or a bending frame and there is a desire to document the level of flatness with which the strip enters the stretching zone or the bending frame.
  • the invention provides a drive for the second tensioning roller, with which a torque about the second roller axis can be applied to the second tensioning roller.
  • a drive is particularly preferably equipped with an electric motor and a gear with which adjustable torques can be generated.
  • the drive applies the torque to one of the bearing journals of the tensioning roller, particularly preferably on one side.
  • the drive is designed to apply a maximum torque in the range of 1-100 kNm to the tensioning roller.
  • the first tensioning roller is designed to be non-driven and all the remaining tensioning rollers that are present are designed to be driven.
  • the first tensioning roller has an auxiliary drive and all other tensioning rollers that are present are also driven.
  • the first tensioning roller designed as a flatness measuring roller is designed to be non-driven.
  • no drive is provided for the first tensioning roller, with which a torque about the first roller axis can be applied to the first tensioning roller.
  • the first tensioning roller is therefore designed as a trailing roller.
  • an auxiliary drive is provided for the first tensioning roller, with which a torque about the first roller axis can be applied to the first tensioning roller.
  • this auxiliary drive for the first tensioning roller is designed to be weaker than the drive for the second tensioning roller.
  • the drive for the second idler is designed in such a way that it can be used, following the basic idea of an idler set, to increase or decrease the belt tension in the belt, it may be that an auxiliary drive for the first idler is necessary to during start-up of the straightener to rotate the first tensioning roller, thus enabling the threading of the strip and, if necessary, to accelerate and decelerate the roller.
  • such an auxiliary drive is not necessary for the actual operation of the straightening system and, in a preferred embodiment of the method according to the invention, is switched off after a start-up phase or is regulated to a torque of 0 Nm.
  • the auxiliary drive is designed to be weaker by an order of magnitude than the drive for the second tensioning roller.
  • the auxiliary drive can generate a maximum torque that is in the range of 0.03 to 0.3 kNm.
  • a third tensioning roller is provided with a third roller axis.
  • a drive for the third tensioning roller is particularly preferably provided, with which a torque about the third roller axis can be applied to the third tensioning roller.
  • the drive for the third idler can generate a maximum torque that is at least twice the maximum torque that the drive for the second idler can generate. This applies in particular to applications in which, in the sequence in which the strip runs over the tensioning rollers, the third tensioning roller is closer to a stretching zone, a bending stand or a tempering stand than the second tensioning roller.
  • the drive for the third idler can generate a maximum torque that is at least half less than the maximum torque that the drive for the second idler can generate. This is especially true for the use cases where in the order in which the tape runs over the tensioning rollers, the second tensioning roller is closer to a stretching zone, a bending stand or a tempering stand than the third tensioning roller.
  • a fourth tensioning roller is provided with a fourth roller axis.
  • a drive for the fourth tensioning roller is particularly preferably provided, with which a torque about the fourth roller axis can be applied to the fourth tensioning roller.
  • the drive for the fourth idler can generate a maximum torque that is at least twice the maximum torque that the drive for the third idler can generate. This applies in particular to those applications in which, in the sequence in which the strip runs over the tensioning rollers, the fourth tensioning roller is closer to a stretching zone, a bending stand or a tempering stand than the third tensioning roller.
  • the drive for the fourth idler can generate a maximum torque that is at least half less than the maximum torque that the drive for the third idler can generate. This applies in particular to those applications in which, in the sequence in which the strip runs over the tensioning rollers, the third tensioning roller is closer to a stretching zone, a bending stand or a tempering stand than the fourth tensioning roller.
  • a fifth tensioning roller is provided with a fifth roller axis.
  • a drive for the fifth tensioning roller is particularly preferably provided, with which a torque about the fifth roller axis can be applied to the fifth tensioning roller.
  • the drive for the fifth idler can produce a maximum torque that is at least twice the maximum torque that the drive for the fourth idler can produce. This is particularly true for those applications where, in the sequence in which the strip runs over the idlers, the fifth idler is closer to a stretching zone, bending stand, or temper rolling stand than the fourth idler.
  • the drive for the fifth idler can produce a maximum torque that is at least half less than the maximum torque that the drive for the fourth idler can produce. This applies in particular to those applications in which, in the sequence in which the strip runs over the tensioning rollers, the fourth tensioning roller is closer to a stretching zone, a bending stand or a tempering stand than the fifth tensioning roller.
  • a sixth tensioning roller with a sixth roller axis is provided.
  • a drive for the sixth tensioning roller is particularly preferably provided, with which a torque about the sixth roller axis can be applied to the sixth tensioning roller.
  • the drive for the sixth idler can produce a maximum torque that is at least twice the maximum torque that the drive for the fifth idler can produce. This applies in particular to applications in which, in the sequence in which the strip runs over the tensioning rollers, the sixth tensioning roller is closer to a stretching zone, a bending stand or a tempering stand than the fifth tensioning roller.
  • the drive for the sixth idler can produce a maximum torque that is at least half less than the maximum torque that the drive for the fifth idler can produce. This applies in particular to those applications in which, in the sequence in which the strip runs over the tensioning rollers, the fifth tensioning roller is closer to a stretching zone, a bending stand or a tempering stand than the sixth tensioning roller.
  • the drive for the second tensioner can apply a maximum torque T2 about the second roller axis to the second tensioner and the auxiliary drive for the first tensioner can apply a maximum torque T1 about the first roller axis to the first tensioner, where T1 is equal or less than 7/8 of T2, more preferably equal to or less than 3/4 of T2, more preferably equal to or less than half of T2, most preferably equal to or less than 1/8 of T2, whole more preferably equal to or less than 1/10 of T2.
  • the second roller axis is arranged in a horizontal plane which lies below a horizontal plane in which the first roller axis is arranged.
  • a fourth tensioning roller is particularly preferably additionally provided, with the fourth roller axis being particularly preferably arranged between the first roller axis and the third roller axis, viewed in the horizontal direction.
  • first roller axis and the second roller axis are aligned parallel to one another.
  • all the roller axes of the tensioning rollers of the tensioning roller set are parallel to one another.
  • the second roller axis is in front of the first roller axis and the fourth roller axis after the first roller axis and the third roller axis after the fourth roller axis.
  • the fifth roller axis is arranged after the third roller axis.
  • a sixth roller axis is arranged between the fifth roller axis and the third roller axis.
  • a front set of tension rollers and a rear set of tension rollers are provided.
  • a stretching zone may be provided between the front idler set and the rear idler set.
  • a bending frame can be provided between the front tension roller set and the rear tension roller set.
  • a stretching zone and a bending frame can be provided between the front set of tension rollers and the rear set of tension rollers.
  • the front tensioning roller set can be designed as a tensioning roller set according to the invention or the rear tensioning roller set can be designed as a tensioning roller set according to the invention.
  • both the front tensioning roller set and the rear tensioning roller set can be designed as tensioning roller sets according to the invention.
  • a further flatness measuring roller is provided in front of the front tensioning roller set and/or after the front tensioning roller set and/or in front of the rear tensioning roller set and/or after the rear tensioning roller set.
  • a particularly preferred alternative is before the front set of idlers and / or after the front set of idlers and / or before rear set of tension rollers and/or no further flatness measuring roller provided after the rear set of tension rollers.
  • the first tensioning roller designed as a flatness measuring roller is the first tensioning roller of the rear set of tensioning rollers onto which the strip runs when it leaves the stretching zone or the bending frame, the flatness of the strip can be determined immediately after leaving the stretching zone or after leaving the bending frame will. If the first tensioning roller, designed according to the invention as a flatness measuring roller, is the last tensioning roller of the front set of tensioning rollers, over which the strip runs before it leaves the front set of tensioning rollers, this arrangement allows the flatness of the strip to be checked immediately before the strip enters the stretching zone or immediately before the the strip entering the bending stand can be determined.
  • embodiments are also conceivable in which there is an interest in the flatness with which the strip enters the straightening system according to the invention or with which flatness it leaves the straightening system according to the invention.
  • the first tensioning roller designed as a flatness measuring roller is the first tensioning roller of the front set of tensioning rollers, onto which the belt runs when it runs into the front set of tensioning rollers.
  • the flatness of the strip as it leaves the coiler can be determined with the flatness measuring roller according to the invention.
  • An embodiment can also be expedient in which the first tensioning roller designed as a flatness measuring roller is the last tensioning roller of the rear set of tensioning rollers, over which the strip runs before it leaves the rear set of tensioning rollers.
  • the flatness measuring roller With such an arrangement of the flatness measuring roller, the flatness of the strip can be determined before it runs onto the coiler.
  • the combination of a flatness measuring roller provided in the set of tension rollers with a flatness measuring roller arranged upstream and/or downstream of the set of tension rollers has the disadvantage that more installation space is required for such an embodiment; however, the provision of a separate tensioning roller in addition to the tensioning roller provided in the tensioning roller set can offer the advantage of being able to calibrate the flatness measuring roller in the tensioning roller set.
  • the same number of driven tensioning rollers are provided in the front tensioning roller set as in the rear tensioning roller set.
  • the front and rear tensioning roller sets have the same number of tensioning rollers, with the first tensioning roller designed as a flatness measuring roller being designed without a drive and being arranged either in the front or in the rear tensioning roller set, with the other tensioning roller set not having a flatness measuring roller but a drag roller instead of the flatness measuring roller has, and the remaining tensioning rollers of the respective tensioning roller set are driven, so that in the front tensioning roller set there are just as many driven tensioning rollers as in the rear tensioning roller set.
  • the rear set of tensioning rollers of the straightening system is a set of tensioning rollers according to the invention, the first tensioning roller being the tensioning roller of the set of tensioning rollers onto which the strip runs after leaving the stretching zone and/or the bending frame.
  • the front set of tensioning rollers of the straightening system is a set of tensioning rollers according to the invention, the first tensioning roller being the tensioning roller of the set of tensioning rollers from which the strip runs into the stretching zone and/or the bending frame.
  • the front set of tensioning rollers of the straightening system is a set of tensioning rollers according to the invention, the first tensioning roller being the tensioning roller of the set of tensioning rollers, onto which the strip from a decoiler runs.
  • the straightening system according to the invention With the straightening system according to the invention, it is possible to carry out the flatness measurement at the smallest possible distance behind the stretching zone or bending frame. This minimizes the dead zone.
  • the invention makes it possible to use the flatness measuring roller in the high-tension area without interference from the roller drive.
  • the flatness measurement can be carried out in the straightening system in the tension area with just one measuring roller.
  • the straightening system according to the invention makes it possible to carry out flatness measuring roller diameters with the same size as the other tensioning rollers of the tensioning roller set. As a result, bending stresses when the belt is deflected around the roller body can be minimized.
  • a method according to the invention for operating a straightening system according to the invention which has a bending frame with an adjustable bending roller and a control device, provides that the control device carries out control interventions on at least one actuator of the straightening system, for example the adjustable bending roller or the sets of tension rollers, based on measurement results from the force sensor.
  • a method according to the invention for operating a re-rolling stand system according to the invention which has an adjustable roll and a control device, provides that the control device carries out control interventions on at least one actuator of the re-rolling stand system, for example the adjustable roll or the sets of tension rollers, based on measurement results from the force sensor.
  • a supplementary or alternative method according to the invention for operating a straightening system according to the invention or a re-rolling stand system according to the invention which is designed such that an auxiliary drive is provided for the first tensioning roller, with which a torque about the first roller axis can be applied to the first tensioning roller, the auxiliary drive for the first tensioning roller is weaker than the drive for the second tensioning roller, provides that after a start-up phase and/or after the belt tension has built up, the auxiliary drive for the first tensioning roller is switched off or is regulated to a drive torque of 0 Nm.
  • start-up phase involves threading the belt and accelerating the system to operating speed.
  • the method can DE 10 2019 006 788 be performed.
  • the invention is used particularly preferably in the straightening and/or re-rolling of strip material, preferably metal strips or sheet metal.
  • Straightening system 1 shown for straightening a strip 2 has a front set of tension rollers 3 and a rear set of tension rollers 4 .
  • a bending frame 5 is provided between the front tensioning roller set 3 and the rear tensioning roller set 4 .
  • a reel 6 is provided in front of the front tension roller set 3 .
  • a reel 7 is provided behind the rear tension roller set 4 .
  • the strip 2 is unwound from the reel 6, passes through the front set of tension rollers 3, passes through the bending frame 5, passes through the rear set of tension rollers 4 and is wound up by the reel 7.
  • the strip tension acting on the strip 2 is increased in the front set of tension rollers 3, while the strip tension acting on the strip 2 is reduced in the rear set of tension rollers 4, so that the strip tension acting on the strip 2 is higher in the area of the bending frame 5 than in front of the front Tensioner set 3 and after the rear tensioner set 4.
  • a drive (not shown) for the second tensioning roller 9 is provided, with which a torque about the second roller axis can be applied to the second tensioning roller 9 .
  • a (also not shown) drive for the third tensioning roller 10 is provided, with which a torque to the third Roller axis can be applied to the third tensioning roller 10.
  • a drive (likewise not shown) for the fourth tensioning roller 11 is provided, with which a torque about the fourth roller axis can be applied to the fourth tensioning roller 11 .
  • the first tensioning roller 8 is designed without a drive.
  • the first tensioning roller 14 is designed without a drive.
  • the straightening system 1 differs from that in 1 shown straightening system 1 by the structure of the rear set of tension rollers 4 and the structure of the front set of tension rollers 3.
  • the second tension roller 9 the third tension roller 10 and the fourth tension roller 11, this has a fifth tension roller 12 and a sixth tension roller 13 .
  • a drive (not shown) for the second tensioning roller 9 is provided, with which a torque about the second roller axis can be applied to the second tensioning roller 9 .
  • a drive (also not shown in detail) is provided for the third tensioning roller 10, with which a torque about the third roller axis can be applied to the third tensioning roller 10.
  • a drive (likewise not shown) for the fourth tensioning roller 11 is provided, with which a torque about the fourth roller axis can be applied to the fourth tensioning roller 11 .
  • a drive (also not shown) for the fifth tensioning roller 12 is provided, with which a torque about the fifth roller axis can be applied to the fifth tensioning roller 12 .
  • the first tensioning roller 8 and the sixth tensioning roller 13 are non-driven.
  • FIG 3 shows the forces applied to the measuring roller by a metal strip that is partially wrapped around the measuring roller and is under strip tension.
  • the quartz force sensors located in recesses in the measuring roller generate an electrical charge. This is directly proportional to the force applied to the quartz.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
EP21210735.3A 2020-11-30 2021-11-26 Ensemble de rouleaux de tension pour une installation de dressage permettant de dresser une bande, installation de dressage, installation de laminage de correction et procédé de fonctionnement d'une installation de dressage Active EP4005695B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020007286.0A DE102020007286B4 (de) 2020-11-30 2020-11-30 Spannrollensatz für eine Richtanlage zum Richten eines Bandes, Richtanlage, Nachwalzgerüstanlage und Verfahren zum Betreiben einer Richtanlage

Publications (2)

Publication Number Publication Date
EP4005695A1 true EP4005695A1 (fr) 2022-06-01
EP4005695B1 EP4005695B1 (fr) 2025-05-21

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EP21210735.3A Active EP4005695B1 (fr) 2020-11-30 2021-11-26 Ensemble de rouleaux de tension pour une installation de dressage permettant de dresser une bande, installation de dressage, installation de laminage de correction et procédé de fonctionnement d'une installation de dressage

Country Status (6)

Country Link
US (1) US12162055B2 (fr)
EP (1) EP4005695B1 (fr)
JP (1) JP2022087064A (fr)
KR (1) KR20220076367A (fr)
CN (1) CN114570789B (fr)
DE (1) DE102020007286B4 (fr)

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DE2630410C2 (fr) 1976-07-06 1988-03-03 Betriebsforschungsinstitut Vdeh-Institut Fuer Angewandte Forschung Gmbh, 4000 Duesseldorf, De
DE4236657A1 (de) 1992-10-30 1994-05-05 Betr Forsch Inst Angew Forsch Umlenkmeßrolle
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EP1789221A1 (fr) 2004-08-30 2007-05-30 Alcan International Limited Appareil et procédé pour fabriquer un émail métallique semi-solide
EP1789211B1 (fr) 2004-09-03 2008-11-19 Betriebsforschungsinstitut VDEh Institut für angewandte Forschung GmbH Unite de traitement de feuillards et utilisation d'un rouleau tendeur dans une unite de traitment de feuillards
DE202007001066U1 (de) 2007-01-18 2008-05-29 Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH Messrolle mit verkeilten Sensoren
KR101510535B1 (ko) * 2013-10-02 2015-04-08 주식회사 포스코 좌굴 응력 측정 장치
DE202014006820U1 (de) 2014-08-26 2015-11-30 Vdeh-Betriebsforschungsinstitut Gmbh Messrolle
DE102014012426A1 (de) 2014-08-26 2016-03-03 Vdeh-Betriebsforschungsinstitut Gmbh Messrolle
DE102018111627A1 (de) 2018-01-23 2019-07-25 Klaus Lenz Streck-Biege-Richtanlage und Verfahren zu deren Betätigung
DE102018009611A1 (de) * 2018-12-11 2020-06-18 Vdeh-Betriebsforschungsinstitut Gmbh Messrolle zum Feststellen einer Eigenschaft eines über die Messrolle geführten bandförmigen Guts
WO2020120329A1 (fr) 2018-12-11 2020-06-18 Vdeh-Betriebsforschungsinstitut Gmbh Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure
WO2020120328A1 (fr) 2018-12-11 2020-06-18 Vdeh-Betriebsforschungsinstitut Gmbh Procédé pour déterminer une propriété d'un produit en forme de bande guidé sur un rouleau de mesure
DE102019006788A1 (de) 2019-09-27 2021-04-01 Vdeh-Betriebsforschungsinstitut Gmbh Verfahren zur Bestimmung der Planheit eines Bandes sowie System zur Durchführung des Verfahrens und Bandbehandlungsanlage

Also Published As

Publication number Publication date
JP2022087064A (ja) 2022-06-09
CN114570789A (zh) 2022-06-03
EP4005695B1 (fr) 2025-05-21
US20220176432A1 (en) 2022-06-09
DE102020007286B4 (de) 2023-05-04
CN114570789B (zh) 2025-12-19
US12162055B2 (en) 2024-12-10
DE102020007286A1 (de) 2022-06-02
KR20220076367A (ko) 2022-06-08

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