WO2023248448A1 - Dispositif de détection de forme de feuille et procédé de détection de forme de feuille - Google Patents

Dispositif de détection de forme de feuille et procédé de détection de forme de feuille Download PDF

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Publication number
WO2023248448A1
WO2023248448A1 PCT/JP2022/025202 JP2022025202W WO2023248448A1 WO 2023248448 A1 WO2023248448 A1 WO 2023248448A1 JP 2022025202 W JP2022025202 W JP 2022025202W WO 2023248448 A1 WO2023248448 A1 WO 2023248448A1
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WO
WIPO (PCT)
Prior art keywords
region
axial direction
rolls
roll
metal plate
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PCT/JP2022/025202
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English (en)
Japanese (ja)
Inventor
達則 杉本
健治 堀井
隆夫 大和田
信弥 金森
Original Assignee
Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社
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.)
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Publication date
Application filed by Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 filed Critical Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社
Priority to PCT/JP2022/025202 priority Critical patent/WO2023248448A1/fr
Publication of WO2023248448A1 publication Critical patent/WO2023248448A1/fr

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    • 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
    • B21B38/02—Methods 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

  • plate shape detection devices are known that are placed between rolling mill stands and measure the tension distribution acting on the plate to determine the elongation strain deviation of the rolled material.
  • a plate shape detection device one has been proposed that detects the reaction force that acts when the strip comes into contact with the split roll and calculates the amount of meandering based on this reaction force (for example, Patent Document 1 reference).
  • the plate shape detection device described in Patent Document 1 aims to improve the accuracy of detecting the meandering of the strip and the plate shape.
  • a plate shape detection device is a plate shape detection device that detects the shape of a metal plate, and includes a roll unit having a plurality of rolls on which the metal plate is placed. , a moving mechanism that moves two or more of the plurality of rolls as one roll group along the axial direction, the plurality of rolls have the width direction of the metal plate as the axial direction, and the plurality of rolls move in the axial direction.
  • first regions and second regions that are longer in the axial direction than the first regions are arranged alternately in the axial direction, and in the roll unit, A first boundary portion where the first region switches to the second region from the central portion in the axial direction toward the outside is located in a flat portion of the roll having a constant radius, and A second boundary portion that switches to the first region is located in a gap between the adjacent rolls, and the moving mechanism is configured to move between a first state in which the roll group is located in the first position and a state in which the roll group is located in the first position. It is characterized in that it is possible to switch between the first position and a second position, which is located at a second position that is moved in the axial direction by more than the length of the first region and less than the length of the second region.
  • the moving mechanism when switching between the first state and the second state, is configured to change the total length of the first region and the second region in the axial direction. Move the roll group by half.
  • the first region is located at a position 50 mm outward from an outer end of the flat portion of the center roll of the two adjacent rolls in the axial direction. , and a position 50 mm outward from the central end of the flat portion of the outer roll.
  • a torque meter that detects the tension that acts on the shafts on both sides of the rolls when the metal plate contacts each of the rolls;
  • the metal plate includes an arm that is rotatably supported and whose other end is supported by the torque meter, and a shape calculation section that calculates the shape of the metal plate based on the output of the torque meter.
  • a plate shape detection method detects the plate shape of the metal plate using a roll unit having a plurality of rolls on which the metal plate is placed, the method comprising: By arranging the plurality of rolls with the width direction of the metal plate as the axial direction and forming a gap in the axial direction, a first region and a second region that is longer in the axial direction than the first region are formed.
  • the amount of movement when moving the roll group is half the total length of the first region and the second region in the axial direction.
  • the first region is set to have a length greater than or equal to an expected deviation amount of the metal plate in the axial direction, and the first region in the axial direction is The center is set to be located at an end of the flat portion on the center side in the axial direction of the entire roll unit.
  • the assumed deviation amount is 40 mm.
  • the first region is located at a position 50 mm outward from the outer end of the flat portion of the center roll of the two adjacent rolls in the axial direction. , and a position 50 mm outward from the central end of the flat portion of the outer roll.
  • FIG. 1 is a schematic diagram of a rolling facility provided with a plate shape detection device according to an embodiment of the present invention.
  • FIG. 1 is a plan view of a plate shape detection device according to an embodiment of the present invention.
  • FIG. 2 is a side view of a detection unit of a plate shape detection device according to an embodiment of the present invention.
  • FIG. 4 is a schematic cross-sectional view taken in the direction of arrow A in FIG. 3;
  • FIG. 5 is an enlarged cross-sectional view of a part of FIG. 4;
  • FIG. 2 is a schematic diagram showing (A) a first state and (B) a second state of the plate shape detection device according to an embodiment of the present invention.
  • 1 is an enlarged cross-sectional view of a part of a plate shape detection device according to an embodiment of the present invention. It is a graph showing the relationship between the maximum error of the plate shape detection result and the set position of the end of the metal plate.
  • a plate shape detecting device 1 is a plate shape detecting device that detects the plate shape of a metal plate S, and includes a plurality of metal plates S on which the metal plate S is placed.
  • a roll unit 20 having rolls 2A to 2G, and a moving mechanism that moves two or more of the plurality of rolls 2A to 2G as one roll group along the axial direction.
  • the plurality of rolls 2A to 2G have the width direction of the metal plate S as the axial direction, and are arranged with a gap G in the axial direction, thereby forming a first area A1 and a second area longer than the first area A1 in the axial direction.
  • the two regions A2 are formed so as to be arranged alternately in the axial direction.
  • the first boundary part B1 which switches from the first area A1 to the second area A2 outward from the central part C in the axial direction, is located in the flat part 21 of the roll 2, which has a constant radius.
  • a second boundary B2 where the second area A2 switches to the first area A1 is located in the gap G between the adjacent rolls 2.
  • the moving mechanism has a first state in which the roll group is located at the first position, and a state in which the roll group has moved from the first position in the axial direction by a length L1 or more of the first area A1 and less than a length L2 of the second area A2. It is possible to switch between the second state and the second state located at the second position.
  • the plate shape detection device 1 is provided between the rolling mill stands, and includes a front rolling stand 100 on the upstream side (left side in FIG. 1) and a rear rolling stand 200 on the downstream side (right side in FIG. 1).
  • the plate shape of the metal plate S placed between the two rolling stands 100 and 200 is detected.
  • the front rolling stand 100 includes a pair of rolling rolls 101 and 102, and a pair of reinforcing rolls 103 and 104 sandwiching these rolls.
  • the rear rolling stand 200 includes a pair of rolling rolls 201 and 202, and a pair of reinforcing rolls 203 and 204 sandwiching these rolls.
  • the metal plate S is a rolled material and is formed into a strip shape with the long side direction in the running direction (left-right direction in FIG. 1; X direction), and the width direction in the depth direction (Y direction) in FIG.
  • the vertical direction (Z direction) in FIG. 1 is the plate thickness direction.
  • the upstream side (the left side in FIG. 1) or the downstream side (the right side in FIG. 1) in the traveling direction may be simply referred to as the upstream side or the downstream side, respectively.
  • the plate shape detection device 1 includes a plurality of (seven in this embodiment) detection units 10A to 10G, a support shaft portion 12 connected to a drive motor 11, and a support shaft portion 12 connected to the support shaft portion 12. It includes a supported table 13, a shape calculation section 14, and a moving mechanism.
  • the support shaft portion 12 extends in a rod shape with the Y direction as the axial direction, and a pair of bearings 121 are provided at positions sandwiching the table 13 from the Y direction, and the bearings 121 are supported by a frame (not shown).
  • the table 13 includes a guide member 131 that guides the metal plate S, and a guide support member 132 that supports the guide member 131.
  • the guide members 131 are provided in the same number as the detection units 10A to 10G, and are arranged on the upstream side so as to correspond to each of the detection units 10A to 10G.
  • each of the detection units 10A to 10G is supported on the downstream side of the guide support member 132 and are arranged in line in the Y direction. As shown in FIG. 3, each of the detection units 10A to 10G includes a roll 2, a pair of support arms 3, a torque meter 4, and a fixing part 5.
  • the roll 2 is rotatably provided with the Y direction as the axial direction.
  • a metal plate S is placed on the roll 2, and the roll 2 rotates as the metal plate S contacts and travels.
  • the roll 2 has a flat portion 21 having a constant radius, and chamfered portions 22 that are provided on both sides of the flat portion 21 in the Y direction and whose radius decreases toward the end (see FIG. 5).
  • the end S1 when the end S1 is located on the roll 2, it does not mean that the end S1 is located on the flat part 21.
  • the end S1 is located in the gap G also includes a state in which the end S1 is located so as to correspond to the chamfered portion 22.
  • the chamfered portion 22 may have a curved cross section or a straight cross section, and the chamfered portion 22 does not need to be formed on the roll 2.
  • the pair of support arms 3 are arranged to sandwich one roll 2 from the Y direction, and one end 3A rotatably supports the shaft of the roll 2, and the other end 3B is supported by the torque meter 4.
  • the torque meter 4 is provided on a fixed part 5, and the fixed part 5 is supported by a guide support member 132. Further, the torque meter 4 is, for example, ring-shaped, and is connected to the shape calculation section 14 by wire or wirelessly, and is capable of transmitting measured values.
  • the shape calculation unit 14 is, for example, a microcomputer equipped with a central processing unit (CPU), and calculates the shape of the metal plate S by acquiring measured values from a plurality of torque meters 4 and performing calculation processing. . Note that the shape calculation unit 14 may also perform other calculation processing.
  • CPU central processing unit
  • the support arms 3 are arranged to sandwich one roll 2 from the Y direction, the support arms 3 are arranged between two rolls 2 adjacent to each other in the Y direction. A gap G is formed.
  • a total of seven rolls 2 in the plurality of detection units 10A to 10G constitute a roll unit 20.
  • the respective rolls 2 of the plurality of detection units 10A to 10G are referred to as rolls 2A to 2G.
  • the direction approaching the center C of the roll unit 20 (direction of arrow a in FIG. 4) is called the center section side, and the direction away from the roll 2D of the central detection unit 10D (the 4) is called the outside.
  • the moving mechanism moves all seven rolls 2 as one roll group along the Y direction.
  • the moving mechanism includes a connecting part that connects the seven rolls 2 so that they can move in the Y direction at the same time, and a driving part (for example, an actuator) that generates a driving force in the Y direction.
  • a driving part for example, an actuator
  • the moving mechanism may move the roll 2 together with other elements constituting the detection units 10A to 10G.
  • the detection units 10A, 10G and the detection units 10B, 10F located inside the detection units 10A, 10G may fluctuate in measured values.
  • the end S1 of the metal plate S may also be located at G.
  • the distance from the end S1 to the flat part 21 of the rolls 2A, 2G is longer than the length that the metal plate S traverses during rolling, the metal plate S always separates from the flat part 21 of the rolls 2A, 2G. Therefore, fluctuations in the measured values in the detection units 10A, 10G and the detection units 10B, 10F located inside them are unlikely to occur.
  • the metal plate S does not touch the flat part 21 of the rolls 2A, 2G.
  • the contact and separation may be repeated, which may cause fluctuations in the measured values in the detection units 10A, 10G and the detection units 10B, 10F located inside them.
  • the plurality of rolls 2 have a first region A1 where fluctuations in measured values are likely to occur when the end portion S1 is arranged, and a second region A2 where fluctuations in measured values are difficult to occur. are formed so that they are arranged alternately.
  • a first region A1 is arranged on the Y-direction center C side (a-direction side), and a second region A2 is arranged on the outside thereof (b-direction side).
  • the first boundary part B1 where the first area A1 switches to the second area A2 from the center part C in the Y direction toward the outside (in the b direction) is located in the flat part 21.
  • a second boundary B2 that switches from the second area A2 to the first area A1 is located in the gap G between two adjacent rolls 2 among the rolls 2A to 2F.
  • the length L2 of the second area A2 in the Y direction is longer than the length L1 of the first area A1 in the Y direction.
  • the moving amount D when the moving mechanism moves the roll 2 by the drive unit is set to half the total length of the Y-direction length L1 of the first area A1 and the Y-direction length L2 of the second area A2. There is. Since the length L2 is longer than the length L1, the movement amount D is greater than or equal to the length L1 and less than the length L2.
  • the moving mechanism only needs to include a stopper to set the moving amount D as described above, and does not need to be able to stop during movement.
  • a method for detecting a plate shape using the plate shape detection device 1 described above will be explained, paying particular attention to the moving mechanism and the positional relationship of each part.
  • a state in which the center portion of the metal plate S coincides with the center portion C of the roll unit 20 is defined as a first state, and the position of the roll group at this time is defined as a first position.
  • the moving mechanism is capable of moving the roll 2 from the first state to the second position by the above-mentioned movement amount D, and the state after the movement is the second state.
  • the position of the end portion S1 in the Y direction may be calculated geometrically from the dimensions of the metal plate S and the dimensions of each part of the plate shape detection device 1 (particularly the arrangement and dimensions of the rolls 2A to 2G).
  • a detection unit for detecting may be provided.
  • FIG. 7 shows the state before and after movement on the roll 2A side
  • FIG. 8 shows the state before and after movement on the roll 2G side.
  • the range in which the end portion S1 is located in the first region A1 in the first state is defined as YS1. That is, in the first state, range YS1 coincides with first area A1.
  • FIGS. 9 and 10 show an example in which a metal plate S having a thickness of 3 mm is used.
  • the expected deviation amount ⁇ is the amount by which the metal plate S may traverse in the Y direction when traveling. That is, when the metal plate S is set in the rolling mill, although the movement (traverse) of the metal plate S in the Y direction is limited to some extent by the guide device, it is necessary to set a clearance between the metal plate S and the guide device. , and the total clearance on both sides corresponds to the assumed deviation amount ⁇ .
  • Such one-sided clearance may be, for example, 20 mm, and the expected deviation amount ⁇ in this case is 40 mm.
  • the center of the first region A1 in the Y direction is located at the central end portion 211, and the length L1 is 40 mm or more.
  • the detection accuracy may also be reduced due to other factors. That is, even if repeated contact and separation does not occur, there may be cases where the length of the end S1 placed on the outermost rolls 2A, 2G is short, or when the end S1 is placed in the gap G and placed on the outermost rolls 2A, 2G. When the amount of protrusion from the second roll 2B, 2F is large, there is a possibility that the detection accuracy will be reduced.
  • FIG. 12 A specific example is shown in FIG. In FIG. 12, the position of the end portion S1 is changed by changing the width of the metal plate S, and the error with the largest absolute value among the errors in the plate shape detection results in the width direction of the metal plate S is set as the maximum error E max .
  • the set position (board end set position) PY of the end S1 which is the horizontal axis, indicates the position of the end S1 when the traverse amount ⁇ Y is 0 mm.
  • the central end 211 of the flat part 21 of the roll 2A is set to 0, and for the right end S1, the central end 211 of the flat part 21 of the roll 2G is set to 0, and both left and right sides are set at the center.
  • the part C side was defined as a negative value, and the outside was defined as a positive value.
  • the results are shown when the traverse amount ⁇ Y is 0 mm and ⁇ 20 mm, respectively, when the thickness of the metal plate S is 2 mm and 3 mm.
  • the position of the left end S1 with respect to the roll 2A and the position of the right end S1 with respect to the roll 2G are symmetrical with respect to the center C of the roll unit 20, but the amount of traverse ⁇ Y If is not 0 mm, the center of the metal plate S and the center C of the roll unit 20 will not match, so the positions of the ends S1 on both sides of the rolls 2A and 2G will be symmetrical with respect to the center C of the roll unit 20. It will no longer be.
  • roll 2F is located on the center C side and becomes a center roll
  • roll 2G is located on the outside and becomes an outside roll.
  • Maximum error E max at a position less than 50 mm outward from the outer end 212 of the flat part 21 of the rolls 2b, 2F and a position more than 50 mm outward from the central end 211 of the flat part 21 of the rolls 2A, 2G is 2.47i-unit or less, and this range may be set as the second area A2.
  • a section extending from a position 50 mm outward from the outer end 212 and a position within 50 mm outward from the central end 211 may be defined as the first region A1.
  • the moving mechanism is in the first state in which the roll group constituted by the rolls 2A to 2G is located in the first position, and in the first state in which the roll group constituted by the rolls 2A to 2G is located in the first position. It is possible to switch between a second state in which the device is located at a second position moved in the Y-axis direction from the first position by a movement amount D that is greater than or equal to the length L1 of the first area A1 and less than the length L2 of the second area A2. By doing so, the end portion S1 of the metal plate S can be placed in the second area A2, and detection accuracy can be improved.
  • the moving mechanism moves all of the plurality of rolls 2A to 2G as a roll group along the Y direction, thereby suppressing the complexity of the device compared to a configuration in which each roll 2 is moved independently. be able to.
  • the first region A1 has a length equal to or greater than the assumed deviation amount ⁇
  • the center of the first region A1 in the Y direction is located at the central end 211 of the flat portion 21, and
  • the expected deviation amount ⁇ may be any appropriate value according to the thickness, material, etc. of the metal plate S that can be the target.
  • the position of the center side end 211 is in the first region.
  • SYMBOLS 1...Plate shape detection device 2,2A-2G...Roll, 20...Roll unit, 21...Flat part, 3...Arm, 4...Torque meter, 14...Shape calculation part, S...Metal plate, S1...End part, A1...first region, A2...second region, B1...first boundary part, B2...second boundary part, G...gap

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

La présente invention concerne un dispositif de détection de forme de feuille et un procédé de détection de forme de feuille capables de supprimer une augmentation de la complexité du dispositif et d'améliorer la précision de détection.　Le dispositif de détection de forme de feuille (1) détecte la forme de feuille d'une tôle en feuille (S) et est équipé d'une unité de rouleau (20) ayant une pluralité de rouleaux (2A-2G) sur lesquels une tôle en feuille (S) est placée et un mécanisme de déplacement qui déplace un groupe d'au moins deux rouleaux de la pluralité de rouleaux (2A-2G) le long de la direction axiale en tant que groupe de rouleaux. La pluralité de rouleaux (2A-2G) sont alignés avec la direction de la largeur de la tôle en feuille (S) en tant que direction axiale tout en formant des espaces (G) dans la direction axiale, formant ainsi des premières régions (A1) et des secondes régions (A2), qui sont plus longues dans la direction axiale que les premières régions (A1), alignées en alternance dans la direction axiale. Dans l'unité de rouleau (20), des premières parties limites (B1) qui commutent d'une première région (A1) à une seconde région (A2) à partir de la partie centrale (C) de la direction axiale vers l'extérieur sont situées sur des parties plates (21) où le rayon est constant parmi les rouleaux (2), et des secondes parties limites (B2) qui commutent d'une seconde région (A2) à une première région (A1) sont situées dans les espaces (G) entre des rouleaux adjacents (2). Le mécanisme de déplacement peut commuter entre un premier état dans lequel le groupe de rouleaux est situé à un premier emplacement et un second état dans lequel le groupe de rouleaux est situé à un second emplacement qui est déplacé dans la direction axiale à partir de la première position par la longueur (L1) de la première région (A1) et moins que la longueur (L2) de la seconde région (A2).
PCT/JP2022/025202 2022-06-23 2022-06-23 Dispositif de détection de forme de feuille et procédé de détection de forme de feuille WO2023248448A1 (fr)

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PCT/JP2022/025202 WO2023248448A1 (fr) 2022-06-23 2022-06-23 Dispositif de détection de forme de feuille et procédé de détection de forme de feuille

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PCT/JP2022/025202 WO2023248448A1 (fr) 2022-06-23 2022-06-23 Dispositif de détection de forme de feuille et procédé de détection de forme de feuille

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10137831A (ja) * 1996-11-01 1998-05-26 Ishikawajima Harima Heavy Ind Co Ltd 形状測定ローラ
JP2001249009A (ja) * 2000-03-07 2001-09-14 Sumitomo Heavy Ind Ltd 金属帯板の形状検出器
JP2006095528A (ja) * 2004-09-28 2006-04-13 Ishikawajima Harima Heavy Ind Co Ltd 圧延機の形状制御装置
JP2006346714A (ja) * 2005-06-17 2006-12-28 Mitsubishi-Hitachi Metals Machinery Inc 形状検出装置及びその方法
WO2012086043A1 (fr) * 2010-12-24 2012-06-28 三菱日立製鉄機械株式会社 Équipement de laminage à chaud et procédé de laminage à chaud

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10137831A (ja) * 1996-11-01 1998-05-26 Ishikawajima Harima Heavy Ind Co Ltd 形状測定ローラ
JP2001249009A (ja) * 2000-03-07 2001-09-14 Sumitomo Heavy Ind Ltd 金属帯板の形状検出器
JP2006095528A (ja) * 2004-09-28 2006-04-13 Ishikawajima Harima Heavy Ind Co Ltd 圧延機の形状制御装置
JP2006346714A (ja) * 2005-06-17 2006-12-28 Mitsubishi-Hitachi Metals Machinery Inc 形状検出装置及びその方法
WO2012086043A1 (fr) * 2010-12-24 2012-06-28 三菱日立製鉄機械株式会社 Équipement de laminage à chaud et procédé de laminage à chaud

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