EP3782746B1 - Appareil de dressage de profilé pour une installation de profilage et methode pour corriger des deviations axiales d'un profilé en metal - Google Patents

Appareil de dressage de profilé pour une installation de profilage et methode pour corriger des deviations axiales d'un profilé en metal Download PDF

Info

Publication number
EP3782746B1
EP3782746B1 EP19193157.5A EP19193157A EP3782746B1 EP 3782746 B1 EP3782746 B1 EP 3782746B1 EP 19193157 A EP19193157 A EP 19193157A EP 3782746 B1 EP3782746 B1 EP 3782746B1
Authority
EP
European Patent Office
Prior art keywords
profile
metal profile
straightening apparatus
metal
correction
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.)
Active
Application number
EP19193157.5A
Other languages
German (de)
English (en)
Other versions
EP3782746A1 (fr
Inventor
Tilman Traub
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.)
Dreistern GmbH and Co KG
Original Assignee
Dreistern GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to ES19193157T priority Critical patent/ES2906076T3/es
Application filed by Dreistern GmbH and Co KG filed Critical Dreistern GmbH and Co KG
Priority to DK19193157.5T priority patent/DK3782746T3/da
Priority to EP19193157.5A priority patent/EP3782746B1/fr
Priority to PL19193157T priority patent/PL3782746T3/pl
Priority to CA3087959A priority patent/CA3087959A1/fr
Priority to US16/941,805 priority patent/US11779974B2/en
Priority to MX2020008414A priority patent/MX2020008414A/es
Publication of EP3782746A1 publication Critical patent/EP3782746A1/fr
Application granted granted Critical
Publication of EP3782746B1 publication Critical patent/EP3782746B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/40Control of flatness or profile during rolling of strip, sheets or plates using axial shifting of the rolls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/02Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
    • B21D3/05Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes rectangular to the path of the work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B38/00Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/02Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips

Definitions

  • the invention relates to a profile straightener according to the preamble of claim 1.
  • This profile straightener is intended for use in a profiling system with which a metal profile is produced by means of roll profiling along a longitudinal axis of the metal profile.
  • Such a profile straightening device for correcting axial deviations of the metal profile from a predetermined profile geometry. It comprises a frame through which the metal profile passes, and at least two cooperating correction rollers mounted in the frame, accommodating the metal profile between them, which, based on the longitudinal axis of the metal profile, are adjustable in two radial directions and in one direction of rotation.
  • the invention also relates to a method for correcting axial deviations of a metal profile from a predetermined profile geometry in a profiling system using such a profile straightening device.
  • a method for correcting axial deviations of a metal profile from a predetermined profile geometry involves the treatment of hot-rolled metal profiles, such as double T-beams and rails.
  • three groups of rollers which are adapted to the shape of the metal profile, are passed through by the metal profile, one of these groups being able to be adjusted with an angle of rotation around the longitudinal axis of the metal profile in order to twist the continuous metal profile.
  • individual rollers of the first and third groups can be adjusted along the longitudinal axis of the metal profile in order to counteract curvatures in the metal profile.
  • a profiling system usually produces virtually endless profiles of the most varied of cross-sectional shapes from a metal strip, the term "profile” here also being intended to include tubes.
  • profile here also being intended to include tubes.
  • a large number of roll forming tools are used for this purpose, which are grouped together in typically 20 to 30 forming stations arranged one behind the other in a line and gradually shape the desired metal profile by means of step-by-step cold forming.
  • the starting material is usually a metal strip, but it can also be blanks or preformed starting profiles that are formed into a desired profile in the profiling system.
  • profiling systems Before, between or after the forming stations, profiling systems usually have further processing stations, such as devices for making openings or bends in the profile, calibration devices, welding devices or a cutting device for cutting the virtually endlessly produced profile into profile pieces that represent the end product of the profiling system .
  • the metal profile can be axially bent or twisted by adjusting the correction rollers in radial directions, which are preferably orthogonal to one another and are usually the horizontal and vertical, and / or in a direction of rotation about the longitudinal axis of the metal profile.
  • Known profile straightening devices are set by experienced operators of a profiling system. If, when running in the profiling system, it becomes apparent that the work result is not optimal with regard to any axial deviations of the metal profile from the specified profile geometry, or if such axial deviations occur or increase during operation of the profiling system, the operating personnel counteract these deviations by it adjusts the correction rollers of the profile straightening device in order to introduce axial bends or a torsion in the metal profile, which counteract the previously determined deviation.
  • the invention is therefore based on the object of proposing a profile straightening device for correcting axial deviations of the metal profile from a given profile geometry and a corresponding method using this profile straightening device with which threatening axial deviations of the metal profile from the given profile geometry are at least largely automatically recognized can be so that the operating staff is supported and less scrap is produced and, if necessary, an automated correction of the axial deviations can be made.
  • a profile straightening apparatus which, as described above, comprises a frame with adjustable correction rollers for the metal profile, is accordingly according to the invention with force sensors for any forces acting on the metal profile in radial directions, ie in directions orthogonal to the longitudinal axis of the metal profile, as well as for any forces acting on the Metal profile equipped with torques acting in the direction of rotation around the longitudinal axis.
  • Force measuring sensors in the sense of the present invention are sensors that detect forces and / or torques and, in particular, can measure their amounts Deviations of the metal profile from the specified profile geometry lead. It is therefore not necessary to wait to see what the metal profile looks like at the exit of the profiling system before countermeasures can be taken on the profile straightening device - which naturally produces corresponding rejects due to the associated dead time in the control loop.
  • the invention is thus based on a fundamental departure from the previous procedure, in which the metal profile piece present as the end product at the exit of the profiling system was checked for axial geometrical deviations and any axial deviations from the specified profile geometry (arch shape, twisting) were taken as an opportunity, the correction rolls in Adjusting the profile straightening device in order to introduce deliberate axial bends or torsions into the metal profile, which compensate for the determined axial deviations.
  • the geometry of the metal profile is not only checked at the exit of the profiling system, but rather a force measurement is carried out beforehand in the area of the profile straightening device in order to identify it when there are internal stresses in the material that lead to unwanted axial deviations in shape.
  • any increasing tendencies of the profiling system to produce metal profiles with axial deviations in shape can be recognized by the ongoing force or torque monitoring and, if necessary, indicated with an alarm signal, namely before rejects are produced.
  • Such increasing tendencies for axial deviations in shape result from wear and tear of the roll forming tools, from possible adjustments at individual forming stations or from possible material fluctuations, such as internal tensions in the metal strip that is formed into the metal profile, or fluctuations in the thickness of the material.
  • Axial deviations in shape are not always visible to the naked eye with the required accuracy, so that in the prior art it certainly happened that a relatively large amount of scrap was produced before it was noticed that the metal profiles produced had axial shape deviations outside the specified tolerances.
  • the correction rollers of the profile straightening device can be adjusted by motor by means of adjusting drives and a control unit is present that is operatively connected to the force measuring sensors and controls the adjusting drives.
  • the correction of axial deviations in shape of the metal profile can be automated. This not only saves costs, because the experienced personnel previously required no longer has to be kept available, but it is also possible to generate corresponding counter-forces or counter-torques on the basis of the measured forces and torques by adjusting the correction rollers on the basis of calculations made in the control unit adjusted. This not only replaces the experience of the experienced staff, but can also lead to the desired goal more quickly. Because with appropriate algorithms, trial-and-error iterations are at least largely unnecessary.
  • the inventive equipment of a profile straightener with force sensors, with or without motorized adjustment drives for the correction rollers leads to a self-contained system that can be integrated into existing profiling systems without major adjustment work, ie the profile straightener according to the invention is advantageously also suitable for Retrofitting of existing profiling systems.
  • a profile straightening device with motorized adjustment of the correction rollers and a control unit for the adjustment drives can additionally be functionally connected to a measuring station for recording the longitudinal profile geometry of the metal profile at the exit of the profiling system, i.e. for calculating adjustments of the correction rollers that are used to correct any axial Deviations in shape are necessary in addition to
  • the forces or torques measured by the force measuring sensors and the geometrical measured values of the measuring station are used, for example, to continuously optimize the calculations and / or to make additional adjustments to the correction rollers if the measuring station continues to detect axial deviations from the specified profile geometry.
  • control unit can be programmed with an algorithm in such a way that it links the geometry data received from the measuring station with the amounts of the forces and / or torques determined by the force measuring sensors in order to establish relationships between the determined amounts of forces and torques with the geometry data of the same profile section as well as relationships between To recognize changes in the determined amounts of the forces and torques with changes in the geometry data of the same profile section, and these relationships are taken into account in the control of the adjustment drives, and in particular used in the sense of machine learning for the continuous optimization of the algorithm.
  • the correction rollers of the profile straightening device according to the invention are preferably adjusted while maintaining their positions assumed relative to one another, since they should act on the metal profile as a whole without influencing the profile cross-section.
  • guide rollers for guiding the continuous metal profile can be provided upstream and / or downstream of the correction rollers, axially spaced therefrom.
  • the metal profile can be bent and / or twisted in the profile straightener without having to include an adjacent forming station as the zero position of the metal profile. This not only enables largely autonomous operation of the profile straightener, but can also guarantee reproducible boundary conditions for force and torque measurement - the latter could be problematic depending on the type of an adjacent forming station.
  • the force measuring sensors can be arranged at least partially in the area of the guide rollers. If the guide rollers are upstream of the correction rollers in relation to a direction of movement of the metal profile, this optimizes the advantages described above of a correction option without dead time, that is, without rejects being produced.
  • the force measuring sensors at least partially on the correction rollers, on their bearings in the frame and / or on the adjustment mechanism for the correction rollers.
  • the identification of increasing tendencies for an axial shape deviation of the metal profile can take place optimally at this point.
  • the method according to the invention for correcting axial deviations of a metal profile from a predetermined profile geometry in a profiling system essentially consists in using a profile straightening apparatus according to the invention in order to correct axial deviations in the metal profile.
  • the first method according to the invention is not limited to merely recognizing increasing tendencies of axial deviations due to wear, material fluctuations or adjustment work at individual forming stations, but is also intended to support the setting up of the profile straightener:
  • the metal profile is first placed in the profile straightener, which is integrated in or downstream of the profiling system and is in a zero position, retracted.
  • any radial forces and / or any torques in the metal profile are determined by means of the force measuring sensors and adjustment values for adjusting the correction rollers in one or both radial directions and / or in the direction of rotation are calculated from this, with which the correction rollers are to be adjusted in order to correct impending axial deviations of the metal profile from the specified profile geometry.
  • the profile is preferably stopped for the initial measurements in the profile straightener.
  • changes in the forces / moments that are active are made in the further operation of the system recorded and from these inferences about changed profile geometries. Based on this, target values are continuously determined for continuous readjustment of the straightening device.
  • a profile straightening device which has adjustment drives for motorized adjustment of the correction rollers and a control unit for the adjustment drives.
  • the force measuring sensors enter any determined forces and / or torques into the control unit of the profile straightening device, the control unit uses this to calculate adjustment values for adjusting the correction rollers in one or both radial directions (mostly horizontal and vertical) and / or in the direction of rotation and controls the adjustment drives to adjust the correction rollers according to the adjustment values.
  • the control unit controls the adjustment drives of the profile straightening device and adjusts the correction rollers accordingly.
  • control unit can also output instructions for manual adjustment of the correction rollers to operators, who then act as actuators instead of the actuators.
  • actuators instead of the actuators.
  • a profile straightener without adjustment drives can also be used.
  • a measuring station for geometrically measuring the metal profile is arranged downstream of the profile straightening device, in which any axial deviations of the metal profile from the predetermined profile geometry are detected.
  • the adjustment values calculated from the measured forces or torques for adjusting the correction rollers in order to correct axial deviations of the metal profile from the specified profile geometry can be checked using the geometric measurement data of the measuring station and, if necessary, corrected or optimized. This is preferably done by means of corresponding correction values when calculating the adjustment values for the correction rollers.
  • a self-learning algorithm can also be used to calculate the adjustment values, which is continuously optimized based on the geometric measurement data of the measuring station and can thus also take over the set-up operation after a corresponding learning phase, for example.
  • geometry data obtained from the measuring station can be linked to the amounts of forces and / or torques determined by the force measuring sensors in order to establish relationships between the amounts of forces and torques determined and the geometry data of the same profile section as well as relationships between changes in the determined amounts of forces and torques Changes in the geometry data of the same profile section are recognized, and these relationships are taken into account in the control of the adjustment drives.
  • Figure 1 shows a schematic representation of a section from a profiling system with a plurality of forming stations 1 (of which only one is shown for the sake of clarity) with roll forming tools 2, which are stored in a frame 3 and on a continuous metal profile 4 - or initially a metal strip - act.
  • a profile straightening device 5 integrated into this profiling system is arranged directly downstream of the forming station 1 shown here and comprises a frame 8 with an upper 6 and a lower correction roller 7, which take up the metal profile 4 passing through the frame 8 between them.
  • force measuring sensors are arranged in the frame 8 of the profile straightening device, with which any forces and torques can be measured, based on a longitudinal axis 9 of the Metal profile 4, radial, ie forces acting transversely to the longitudinal axis 9 in the horizontal direction (F y ), in the vertical direction (F z ) and torques (M x ) which act around the longitudinal axis 9.
  • the force measuring sensors input the measured values into a control unit 10, which in turn controls adjustment drives 11 x , 11 y and 11 z , which are symbolized here by cranks.
  • the adjustment rollers 6, 7, unchanged in their position assumed relative to one another, in the vertical and / or horizontal direction transversely to the longitudinal axis 9 of the metal profile 4, and / or in the direction of rotation around the longitudinal axis 9 of the metal profile 4 can be adjusted.
  • the upper correction roller 6 and the lower correction roller 7 are designed to be profile-specific and are therefore only indicated in the present case by dash-dotted lines.
  • correction roller axes 12 are visible, which are mounted with a holder 13 in the frame 8 in such a way that their relative position to one another always remains constant.
  • the adjustment drives 11 are symbolized by hand cranks, since the present invention is not limited to a motorized adjustment of the correction rollers.
  • the adjustment drive 11 z enables the holder 13 and thus the correction roller axes 12 to be moved up and down together; it is therefore a vertical adjustment.
  • the adjustment drive 11 y moves the holder 13 or the correction roller axes 12 perpendicular to the longitudinal axis 9 of the metal profile 4 horizontally, so that it is a horizontal adjustment.
  • the adjustment drive 11 x the holder 13 of the correction roller axes 12 is rotated as a whole about the longitudinal axis 9 clockwise or counterclockwise, whereby a torsional adjustment is formed.
  • the profile straightening device 5 is firmly attached to a substructure 15 ( Figure 1 ) is attached and the metal profile 4 is firmly clamped in the upstream forming station 1, an axially advancing bend can be introduced into the metal profile 4 by radial adjustment of the correction rollers 6, 7 by means of the vertical and / or horizontal adjustment drives 11 z , 11 y, to compensate for any stresses in the material that would lead to an opposite bending and thus to an axial deviation from the specified profile geometry.
  • the adjustment drive 11 x enables the metal profile 4 to be twisted in the direction of rotation with respect to the zero position defined in the forming station 1, whereby any rotations of the metal profile 4 or internal stresses that would lead to such rotations can be corrected.
  • Figure 4 shows a second exemplary embodiment for a profile straightening apparatus 5 according to the invention, this exemplary embodiment only being one downstream of the profile straightening apparatus 5 arranged measuring station 16 for geometrically measuring the metal profile 4 from the embodiment according to Figure 1 differs.
  • the measuring station 16 is expediently arranged at the exit of the profiling system and is only indicated here, since there are already corresponding measuring devices for measuring the straightness of a profile.
  • the measurement data from the measuring station 16 are also entered into the control unit 10 and taken into account by this when the adjustment drives 11 are controlled.
  • the present exemplary embodiments are provided, on the one hand, to detect any forces F z , F y that act in the two orthogonal directions (vertical and horizontal) to the longitudinal axis 9 of the metal profile 4, as well as any torques M x about the longitudinal axis 9 and at To give a warning notice to changes during operation, since such changes in the forces or torques can indicate undesired axial deviations of the metal profile 4 from the specified profile geometry.
  • the exemplary embodiments implement a preferred embodiment of the present invention, according to which the correction rollers 6, 7 or their correction roller axes 12 can be adjusted by motor by means of adjustment drives 11 and can preferably be used during the setup operation of the profiling system.
  • the force measuring sensors can then be used to determine any vertical and horizontal forces F z , F y that indicate internal stresses that can lead to axial arching. These forces are expediently measured in the bearings of the correction roller axes 12, which are in line with the roll forming tools 2 of the last forming station 1 upstream. Correspondingly, a torque M x acting on the correction rollers 6, 7 is measured in the metal profile 4, which acts in the direction of rotation about the longitudinal axis 9 of the metal profile 4 and can lead to a torsion of the finished metal profile 4.
  • the motorized adjustability of the correction rollers 6, 7 improves the further operation of the profiling system.
  • changes in the measured forces F y , F z or torques M x are transmitted to the control unit 10, in which a suitable algorithm is used to calculate how the correction rollers 6, 7 are further adjusted vertically and / or horizontally and / or reversed the longitudinal axis 9 of the metal profile 4 must be rotated in order to neutralize the changed internal stresses acting in the metal profile 4 or to counteract them in such a way that undesired axial deviations from a predetermined profile geometry are corrected.
  • the control unit 10 controls the adjustment drives 11 of the profile straightening device 5 and adjusts the correction rollers 6, 7 or their holder 13 accordingly.
  • Axial deviations of the metal profile 4 from the predetermined profile geometry are thus corrected in both exemplary embodiments at the exit of the forming station 1, there being no dead time between the detection of causes for axial deviations in shape and the correction thereof; so no rejects are produced.
  • the modified embodiment according to Figure 4 can optimize the method just described by measuring the profile geometry downstream of the profile straightening device 5 by means of the only indicated measuring station 16. This is expediently done at the very end of the profiling system, after the metal profile 4 has been separated into individual profile pieces. In this way it can be recognized if, despite the correction, there are still axial deviations of the metal profile 4 from the predetermined profile geometry, that is to say the algorithm of the control unit 10 has not led to the optimal correction result.
  • the measured values from the measuring station 16 are also reported back to the control unit 10 and taken into account there by the algorithm, either by correcting the calculation on a case-by-case basis or by continuously optimizing the algorithm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Wire Processing (AREA)

Claims (16)

  1. Appareil (5) de dressage de profilés, dédié à une installation de profilage dévolue à la fabrication d'un profilé métallique (4) par profilage au laminoir le long d'un axe longitudinal (9) dudit profilé métallique (4), ledit appareil (5) de dressage de profilés étant prévu pour corriger des écarts axiaux dudit profilé métallique (4) par rapport à une géométrie de profilage préétablie, comprenant un bâti (8) et au moins deux rouleaux correcteurs (6, 7) coopérant mutuellement, qui sont montés dans ledit bâti (8), reçoivent entre eux le profilé métallique (4) et peuvent être réglés dans au moins deux directions radiales, ainsi que dans au moins une direction de rotation par rapport à l'axe longitudinal dudit profilé métallique (4),
    caractérisé par le fait
    que ledit appareil (5) de dressage de profilés est équipé de capteurs mesureurs de forces, dédiés à d'éventuelles forces (Fy, Fz) agissant sur le profilé métallique (4) dans des directions radiales, et à d'éventuels couples de rotation (Mx) agissant sur ledit profilé métallique (4) autour de l'axe longitudinal (9), dans la direction de rotation.
  2. Appareil de dressage de profilés, selon la revendication 1, réalisé de façon telle qu'il affiche une alarme, et/ou délivre un signal d'alarme lorsque les grandeurs des forces (Fy, Fz) ou des couples de rotation (Mx), spécifiées par les capteurs mesureurs de forces, varient en excédant une valeur de seuil préétablie.
  3. Appareil de dressage de profilés, selon l'une des revendications 1 ou 2, sachant que les rouleaux correcteurs (6, 7) peuvent être réglés en mode motorisé, au moyen d'entraînements de réglage (11x, 11y, 11z), et sachant que ledit appareil (5) de dressage de profilés est doté, par ailleurs, d'une unité de commande (10) affectée auxdits entraînements de réglage (11x, 11y, 11z) et en liaison opérante avec les capteurs mesureurs de forces.
  4. Appareil de dressage de profilés, selon au moins l'une des revendications 1 à 3, les rouleaux correcteurs (6, 7) pouvant être réglés tout en conservant les emplacements qu'ils ont pris mutuellement.
  5. Appareil de dressage de profilés, selon au moins l'une des revendications 1 à 4, les rouleaux correcteurs (6, 7) pouvant être réglés dans deux directions radiales perpendiculaires l'une à l'autre, en particulier dans les directions verticale et horizontale, ainsi que dans une direction de rotation.
  6. Appareil de dressage de profilés, selon au moins l'une des revendications 1 à 5, ledit appareil (5) de dressage de profilés étant prévu pour être intégré dans l'installation de profilage.
  7. Appareil de dressage de profilés, selon au moins l'une des revendications 1 à 6, sachant que des rouleaux de guidage, montés dans le bâti (8) en amont et/ou en aval des rouleaux correcteurs (6, 7) par rapport à une direction de mouvement du profilé métallique (4), sont implantés en vue de guider ledit profilé métallique (4) défilant d'un trait à travers ledit bâti (8).
  8. Appareil de dressage de profilés, selon la revendication 7, les capteurs mesureurs de forces étant implantés, au moins en partie, dans la région des rouleaux de guidage.
  9. Appareil de dressage de profilés, selon au moins l'une des revendications 1 à 8, les capteurs mesureurs de forces étant implantés au moins en partie sur les rouleaux correcteurs (6, 7), sur les axes (12) desdits rouleaux correcteurs, sur les paliers de ces derniers dans le bâti (8) et/ou sur un mécanisme de réglage dévolu auxdits rouleaux correcteurs (6, 7).
  10. Appareil de dressage de profilés, selon la revendication 2 ou selon la revendication 2 et au moins l'une des revendications 3 à 9, sachant qu'un poste de mesure (16) disposé en aval des rouleaux correcteurs (6, 7) par rapport à la direction de mouvement du profilé métallique (4), et prévu pour la mesure géométrique dudit profilé métallique (4), est en liaison opérante avec l'unité de commande (10).
  11. Appareil de dressage de profilés, selon la revendication 10, l'unité de commande (10) étant réalisée de telle sorte qu'elle combine des données géométriques, émanant du poste de mesure (16), avec les grandeurs des forces (Fy, Fz) et/ou des couples de rotation (Mx) spécifiées par les capteurs mesureurs de forces, afin d'identifier des corrélations des grandeurs spécifiées desdites forces (Fy, Fz), et desdits couples de rotation (Mx), avec les données géométriques du même tronçon de profilé, ainsi que des corrélations de variations desdites grandeurs spécifiées desdites forces (Fy, Fz), et desdits couples de rotation (Mx), avec des variations des données géométriques du même tronçon de profilé ; et prend ces corrélations en compte lors de la commande des entraînements de réglage (11x, 11y, 11z).
  12. Procédé de correction d'écarts axiaux d'un profilé métallique (4) par rapport à une géométrie de profilage préétablie, avec utilisation d'un appareil (5) de dressage de profilés comprenant un bâti (8) et au moins deux rouleaux correcteurs (6, 7) coopérant mutuellement, qui sont montés dans ledit bâti (8), reçoivent entre eux le profilé métallique (4) et peuvent être réglés dans au moins une direction de rotation par rapport à l'axe longitudinal dudit profilé métallique (4), sachant que ledit profilé métallique (4) est introduit dans ledit appareil (5) de dressage de profilés, et que lesdits rouleaux correcteurs (6, 7) sont réglés de façon à corriger des écarts axiaux dudit profilé métallique (4) par rapport à la géométrie de profilage préétablie,
    caractérisé par le fait
    que ledit procédé est prévu pour corriger des écarts axiaux d'un profilé métallique (4), par rapport à une géométrie de profilage préétablie, dans une installation de profilage dévolue à la fabrication d'un profilé métallique (4) par profilage au laminoir le long d'un axe longitudinal (9) dudit profilé métallique (4), et est mis en œuvre avec utilisation d'un appareil (5) de dressage de profilés conforme à au moins l'une des revendications 1 à 11, sachant que ledit profilé métallique (4) est introduit dans ledit appareil (5) de dressage de profilés, intégré dans ladite installation de profilage ou subordonné à cette dernière, avant qu'il n'atteigne un poste de traitement qui est situé, le cas échéant, en aval dudit appareil (5) de dressage de profilés ; que d'éventuelles forces radiales (Fy, Fz) agissant sur ledit profilé métallique (4) dans ledit appareil (5) de dressage de profilés, et/ou d'éventuels couples de rotation (Mx), sont spécifié(e)s au moyen des capteurs mesureurs de forces ; et qu'il est opéré, sur cette base, un calcul de valeurs de réglage qui ciblent un réglage des rouleaux correcteurs (6, 7) dans l'une, ou dans l'une et l'autre des directions radiales et/ou dans la direction de rotation, et à l'aide desquelles lesdits rouleaux correcteurs (6, 7) doivent être réglés en vue de corriger des écarts axiaux dudit profilé métallique (4) par rapport à ladite géométrie de profilage préétablie.
  13. Procédé de correction d'écarts axiaux d'un profilé métallique (4) par rapport à une géométrie de profilage préétablie, avec utilisation d'un appareil (5) de dressage de profilés comprenant un bâti (8) et au moins deux rouleaux correcteurs (6, 7) coopérant mutuellement, qui sont montés dans ledit bâti (8), reçoivent entre eux le profilé métallique (4) et peuvent être réglés dans au moins une direction de rotation par rapport à l'axe longitudinal dudit profilé métallique (4), sachant que ledit profilé métallique (4) est introduit dans ledit appareil (5) de dressage de profilés, et que lesdits rouleaux correcteurs (6, 7) sont réglés de façon à corriger des écarts axiaux dudit profilé métallique (4) par rapport à la géométrie de profilage préétablie,
    caractérisé par le fait
    que ledit procédé est prévu pour corriger des écarts axiaux d'un profilé métallique (4), par rapport à une géométrie de profilage préétablie, dans une installation de profilage dévolue à la fabrication d'un profilé métallique (4) par profilage au laminoir le long d'un axe longitudinal (9) dudit profilé métallique (4), et est mis en œuvre avec utilisation d'un appareil (5) de dressage de profilés conforme à au moins l'une des revendications 1 à 11,
    sachant que les capteurs mesureurs de forces entrent, dans une unité de commande (10), les forces (Fy, Fz) et/ou les couples de rotation (Mx) spécifié(e)s et que, sur cette base, ladite unité de commande (10) calcule des valeurs de réglage ciblant un réglage des rouleaux correcteurs (6, 7) dans l'une, ou dans l'une et l'autre des directions radiales et/ou dans la direction de rotation, puis délivre lesdites valeurs de réglage en tant que recommandation comportementale destinée à des opérateurs.
  14. Procédé selon la revendication 13, sachant qu'il est fait usage d'un appareil (5) de dressage de profilés conforme à la revendication 2, ou à la revendication 2 et à au moins l'une des revendications 3 à 11, et sachant que les capteurs mesureurs de forces entrent, dans l'unité de commande (10), les forces (Fy, Fz) et/ou les couples de rotation (Mx) spécifié(e)s et que, sur cette base, ladite unité de commande (10) calcule des valeurs de réglage ciblant un réglage des rouleaux correcteurs (6, 7) dans l'une, ou dans l'une et l'autre des directions radiales et/ou dans la direction de rotation, puis pilote les entraînements de réglage de manière à régler lesdits rouleaux correcteurs (6, 7) en concordance avec lesdites valeurs de réglage.
  15. Procédé selon l'une des revendications 13 ou 14, sachant que le profilé métallique (4) est introduit dans l'appareil (5) de dressage de profilés, intégré dans l'installation de profilage ou subordonné à cette dernière, avant qu'il n'atteigne un poste de traitement qui est situé, le cas échéant, en aval dudit appareil (5) de dressage de profilés ; que d'éventuelles forces radiales (Fy, Fz) agissant sur ledit profilé métallique (4) dans ledit appareil (5) de dressage de profilés, et/ou d'éventuels couples de rotation (Mx), sont spécifié(e)s au moyen des capteurs mesureurs de forces ; et qu'il est opéré, sur cette base, un calcul de valeurs de réglage qui ciblent un réglage des rouleaux correcteurs (6, 7) dans l'une, ou dans l'une et l'autre des directions radiales et/ou dans la direction de rotation, et à l'aide desquelles lesdits rouleaux correcteurs (6, 7) doivent être réglés en vue de corriger des écarts axiaux dudit profilé métallique (4) par rapport à ladite géométrie de profilage préétablie.
  16. Procédé selon au moins l'une des revendications 13 à 15, sachant qu'il est fait usage d'un appareil (5) de dressage de profilés pourvu d'un poste de mesure (16) conforme à la revendication 10 ; et sachant que les valeurs de réglage calculées sont vérifiées à l'appui des données de mesures géométriques dudit poste de mesure (16) et sont corrigées, le cas échéant, en particulier au moyen de valeurs correctrices correspondantes lors du calcul desdites valeurs de réglage.
EP19193157.5A 2019-08-22 2019-08-22 Appareil de dressage de profilé pour une installation de profilage et methode pour corriger des deviations axiales d'un profilé en metal Active EP3782746B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DK19193157.5T DK3782746T3 (da) 2019-08-22 2019-08-22 Profil-udretningsapparat til et profileringsanlæg samt fremgangsmåde til at korrigere et metalprofils aksiale afvigelser
EP19193157.5A EP3782746B1 (fr) 2019-08-22 2019-08-22 Appareil de dressage de profilé pour une installation de profilage et methode pour corriger des deviations axiales d'un profilé en metal
PL19193157T PL3782746T3 (pl) 2019-08-22 2019-08-22 Aparat do prostowania profili dla instalacji profilującej oraz sposób korygowania odchyłek osiowych profilu metalowego
ES19193157T ES2906076T3 (es) 2019-08-22 2019-08-22 Aparato enderezador de perfiles para una instalación de perfilado y procedimiento para corregir desviaciones axiales de un perfil metálico
CA3087959A CA3087959A1 (fr) 2019-08-22 2020-07-24 Appareil de redressement de reproduction pour un systeme de reproduction
US16/941,805 US11779974B2 (en) 2019-08-22 2020-07-29 Profile straightening apparatus for a profiling system
MX2020008414A MX2020008414A (es) 2019-08-22 2020-08-11 Enderezador de perfil para una instalacion perfiladora.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19193157.5A EP3782746B1 (fr) 2019-08-22 2019-08-22 Appareil de dressage de profilé pour une installation de profilage et methode pour corriger des deviations axiales d'un profilé en metal

Publications (2)

Publication Number Publication Date
EP3782746A1 EP3782746A1 (fr) 2021-02-24
EP3782746B1 true EP3782746B1 (fr) 2021-12-22

Family

ID=67734586

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19193157.5A Active EP3782746B1 (fr) 2019-08-22 2019-08-22 Appareil de dressage de profilé pour une installation de profilage et methode pour corriger des deviations axiales d'un profilé en metal

Country Status (7)

Country Link
US (1) US11779974B2 (fr)
EP (1) EP3782746B1 (fr)
CA (1) CA3087959A1 (fr)
DK (1) DK3782746T3 (fr)
ES (1) ES2906076T3 (fr)
MX (1) MX2020008414A (fr)
PL (1) PL3782746T3 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1036915B1 (fr) * 1999-03-15 2004-11-10 Institut Francais Du Petrole Méthode et dispositif pour contrôler la déformation d'une conduite métallique déroulée

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5806357A (en) * 1996-01-23 1998-09-15 Siemens Aktiengesellschaft System and method for rolling tapered slabs
JP4191922B2 (ja) * 2001-09-06 2008-12-03 新日本製鐵株式会社 全長における断面寸法形状および真直性に優れた形鋼の矯正方法および矯正装置
AT506603B8 (de) * 2008-04-04 2010-03-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung für eine giess-walz-verbundanlage
EP2656936B1 (fr) * 2010-12-24 2015-04-15 Mitsubishi-Hitachi Metals Machinery, Inc. Équipement de laminage à chaud et procédé de laminage à chaud

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1036915B1 (fr) * 1999-03-15 2004-11-10 Institut Francais Du Petrole Méthode et dispositif pour contrôler la déformation d'une conduite métallique déroulée

Also Published As

Publication number Publication date
PL3782746T3 (pl) 2022-03-21
US11779974B2 (en) 2023-10-10
EP3782746A1 (fr) 2021-02-24
ES2906076T3 (es) 2022-04-13
CA3087959A1 (fr) 2021-02-22
DK3782746T3 (da) 2022-01-31
US20210053098A1 (en) 2021-02-25
MX2020008414A (es) 2021-02-23

Similar Documents

Publication Publication Date Title
EP2477764B1 (fr) Procédé et dispositif pour le dressage par traction et flexion continu de bandes métalliques
EP1781429B1 (fr) Procede pour dresser une bande metallique et dresseuse
DE10120050C1 (de) Verfahren und Vorrichtung zum Herstellen gebogener Federbandabschnitte
EP2813299B1 (fr) Procédé et dispositif destinés au dressage par traction et flexion de bandes de métal
EP1955786B1 (fr) Procédé destinés à aplanir des bandes en métal
EP2712687B1 (fr) Dresseuse
AT406553B (de) Verfahren und vorrichtung zum korrigieren von gewalzten, in der bandebene horizontal gebogenen metallbändern, insbesondere von metallbändern mit einer banddicke von 0,5 mm bis 2,0 mm
DE2543738A1 (de) Verfahren und kalander zur herstellung von folien
EP3782746B1 (fr) Appareil de dressage de profilé pour une installation de profilage et methode pour corriger des deviations axiales d'un profilé en metal
DE10153144C1 (de) Vorrichtung zur Herstellung eines Rohres
DE102011112077B4 (de) Fertigungsanlage zur Herstellung von Produkten aus zylindrischen Metallstäben
EP2559497A2 (fr) Procédé et dispositif de fabrication de tuyaux pélerinés à froid
EP1080800B1 (fr) Procédé pour le laminage flexible d'une bande métallique
DE102011120914A1 (de) Rollumformstation, Profilieranlage und Verfahren zur Umformung eines Bleches oder Blechbandes
EP3325186B1 (fr) Installation et procédé destinés à l'élimination de défauts de planéité d'un produit plat métallique
DE19962754A1 (de) Verfahren zum flexiblen Walzen eines Metallbandes
EP1466676B1 (fr) Procédé et appareil pour la fabrication d'un profilé métallique fermé ou d'un tube métallique ayant une paroi d'épaisseur variable dans le sens de sa longueur
AT517335B1 (de) Verfahren und Vorrichtung zum Herstellen eines Metallbands mit weitgehend parallelen Bandkanten
EP4175773A1 (fr) Machine à dresser et procédé de redressage d'une bande métallique ou d'une pièce métallique plate
DE202019106037U1 (de) Anlage zur Herstellung von Profilen aus einem Metallband
DE19754171B4 (de) Verfahren zur Herstellung eines Profils mit in seinem Längsverlauf sich änderndem Querschnitt und Vorrichtung zur Durchführung des Verfahrens
EP3403737B1 (fr) Machine à dresser et procédé de fonctionnement d'une telle machine
WO2022063594A1 (fr) Dispositif et procédé de laminage d'une bande métallique
WO2002062506A1 (fr) Dispositif pour le formage sans enlevement de copeaux de pieces allongees
DE1055485A1 (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210326

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20210817

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502019003049

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1456742

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220115

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20220126

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2906076

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20220413

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220322

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220422

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502019003049

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220422

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

26N No opposition filed

Effective date: 20220923

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220822

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230508

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220822

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20230823

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230831

Year of fee payment: 5

Ref country code: ES

Payment date: 20230918

Year of fee payment: 5

Ref country code: CZ

Payment date: 20230810

Year of fee payment: 5

Ref country code: CH

Payment date: 20230902

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20230823

Year of fee payment: 5

Ref country code: PL

Payment date: 20230810

Year of fee payment: 5

Ref country code: FR

Payment date: 20230822

Year of fee payment: 5

Ref country code: DK

Payment date: 20230823

Year of fee payment: 5

Ref country code: DE

Payment date: 20230809

Year of fee payment: 5

Ref country code: BE

Payment date: 20230822

Year of fee payment: 5

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20230822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211222

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20190822