WO2013035449A1 - Roller leveler and metal plate leveling method using same - Google Patents
Roller leveler and metal plate leveling method using same Download PDFInfo
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- WO2013035449A1 WO2013035449A1 PCT/JP2012/068582 JP2012068582W WO2013035449A1 WO 2013035449 A1 WO2013035449 A1 WO 2013035449A1 JP 2012068582 W JP2012068582 W JP 2012068582W WO 2013035449 A1 WO2013035449 A1 WO 2013035449A1
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- biting
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- 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
Definitions
- the present invention relates to a roller leveler for correcting a metal plate such as a steel plate and a method for correcting a metal plate using the roller leveler.
- a roller leveler in which a plurality of leveling rolls are arranged in a staggered manner in the vertical direction is used for the purpose of correcting such warpage and wave shape deformation to flatten the metal plate.
- the roller leveler passes the metal plate to be corrected in a state where a plurality of upper leveling rolls are pushed into a plurality of lower leveling rolls, or in a state where a plurality of lower leveling rolls are pushed into a plurality of upper leveling rolls, By repeatedly bending the metal plate, the warp and wave shape of the metal plate are flattened.
- a plurality of lower leveling rolls and a plurality of upper leveling rolls are held in a roll frame, the lower leveling rolls are fixed, and the upper leveling rolls are provided on the inlet side and the outlet side.
- the metal plate is corrected by being pushed in by the (pressing cylinder).
- Patent Document 1 Although it serves as a guideline for avoiding that the metal plate to be corrected is not caught between the upper and lower leveling rolls, it does not sufficiently show how to control, and actually In this case, it is necessary to increase the pushing amount to the set value after confirming that the material to be corrected is bitten each time, which is complicated.
- the object of the present invention is to allow the metal plate to be reliably corrected to be bitten between the leveling rolls even when it is necessary to increase the pressing amount by the leveling roll, and then quickly set the pressing amount to the set value. It is another object of the present invention to provide a roller leveler capable of correcting a metal plate and a correction method using the roller leveler.
- a plurality of leveling rolls are arranged in a zigzag pattern above and below a plate passing line of a metal plate to be corrected, and rotate so as to correct the metal plate and pass through the metal plate.
- a control device that controls the amount of pressing of the metal plate by the pressing cylinder so as to be caught between the leveling rolls of the control roller, and the control device is necessary for correcting the metal plates of the pressing cylinders on the entry side and the exit side.
- a plurality of leveling rolls are arranged in a zigzag pattern above and below the plate passing line of the metal plate to be corrected, and rotate so as to correct the metal plate and pass it through the metal plate.
- a leveling roll unit having a roller, and a roller leveler provided on each of the leveling roll unit for pressing and pushing the metal plate through the leveling roll.
- the biting limit pushing amount that is the pushing amount of the pressing cylinder on the entry side at the limit of biting between the upper and lower leveling rolls and the biting limit pushing amount are controlled. Based on the biting correction table in which the biting correction control distance, which is the moving distance of the metal plate tip, is set, when the set push amount of the entry side push cylinder is larger than the biting limit push amount, During the insertion correction control distance, the pushing amount of the entry side pressing cylinder is limited to the biting limit pushing amount, and when the tip of the metal plate reaches the biting correction control distance, Provided is a method for correcting a metal plate, characterized in that the pressing amount is set to the set pressing amount.
- the biting correction table further includes, for each plate thickness section and each steel type section, the outlet side pressing corresponding to the pressing amount of the pressing cylinder on the inlet side being the biting limit pressing amount.
- reducing means pushing in by applying pressure
- direction of pressure is not limited. That is, “reducing” can be replaced by the term “pressing”.
- a reduction cylinder (pressing cylinder) for applying a reduction force (pressing force) for correcting the metal plate P to both ends of the leveling roll unit 20 between the housing 1 and the upper frame 2 in the conveying direction of the metal plate P. 4a and 4b are arranged. Two rolling-down cylinders 4a and 4b are provided at both ends in the width direction of the metal plate P (see FIG. 2, but only the rolling-down cylinder 4a is shown in FIG. 2).
- the pressing amount (the amount of reduction) of the reduction cylinders 4a and 4b necessary for leveling (correction) of the metal plate P is set in the control device 30 according to the thickness of the metal plate P and the like.
- the metal plate P is corrected with the pushing amount (the amount of reduction).
- the limit of pressing amount ⁇ L is limited, and such a pressing amount limit is set in the correction table in FIG. 4 from the apex of the reference leveling roll (# 1 leveling roll in FIG. 5) on the leading end of the metal plate P.
- the reduction correction set in the biting correction table after the tip of the metal plate P bites the distance Lb from the reference leveling roll on the input side as shown in FIG.
- the push-in amount (roll-down amount) of the inlet side reduction cylinder is set up to the set push-in amount ⁇ e1.
- the reference leveling roll on the most input side is # 1
- the subsequent leveling rolls are numbered sequentially from left to right as # 2 to # 9.
- the metal plate P can be corrected by setting it up to the set push amount ⁇ e1 promptly while reliably preventing the defective insertion, and the correction yield of the metal plate P can be kept high.
- the reduction correction speed IV is a speed from the biting limit pushing amount to the set pushing amount ⁇ e1, and this reduction correction velocity IV also has an appropriate value according to the thickness of the metal plate P.
- the pressing amount of the pressing cylinder on the entry side at the limit that the metal plate bites between the upper and lower leveling rolls of the leveling roll unit is input to the control device.
- the set push-in amount necessary for correcting the metal plate of the side reduction cylinder is larger than the biting limit push-in amount, the push-in of the input side reduction cylinder is pushed during the bite correction control distance based on the bite correction table.
- the amount is limited to the biting limit push-in amount, and when the tip of the metal plate reaches the bite correction control distance, control is performed so that the push-in amount of the inlet reduction cylinder becomes the set push-in amount.
- the roller leveler according to the present embodiment has the same basic structure as the roller leveler 100 of the first embodiment, and is different from the first embodiment only in the method of biting correction control.
- the biting correction control for limiting the pushing amount of the inlet side pressing cylinder to the biting limit pushing amount ⁇ L.
- the pressing amount of the inlet-side pressure reduction cylinder is set to the set pressing amount ⁇ e1.
- the control of the pushing amount corresponding to the biting correction control is not performed for the outlet side reduction cylinder. That is, in the first embodiment, the set pushing amount ⁇ d1 of the outlet side reduction cylinder is set to a value with the smallest warpage corresponding to the setting pushing amount ⁇ e1 of the entry side reduction cylinder. Therefore, in the biting correction control of the first embodiment, when the pushing amount of the inlet side pressure reduction cylinder is set to the biting limit pushing amount ⁇ L, there is a case where the optimum pushing amount is not obtained in the outlet side pressure reduction cylinder.
- the metal plate P as the material to be corrected is a hard and thin material such as a high-tensile steel plate
- the biting correction area (in which biting correction is performed in the metal plate P (see FIG. 7)).
- the metal plate P may be warped at the biting correction control distance Lb + the distance ⁇ ) when the pressing amount is changed from ⁇ L to ⁇ e1.
- the distance between the guide rolls (table rolls) 14 is about 1 m as shown in FIG.
- the metal plates P arranged on both sides of the leveling roll unit 20 are pressed and passed. There arises an inconvenience of hitting the hold-down roll 41 for facilitating or hitting an attached device (not shown).
- a control table 30 stores a bite correction table in which a corresponding output side push amount ⁇ dE (mm), which is an optimal push amount of the output side reduction cylinder corresponding to the limit push amount ⁇ L (mm), is set. input.
- a correction table in which the corresponding delivery side pushing amount ⁇ dE (mm) is set for each steel type section is created. Then, when the set value of the indentation side reduction cylinder (the amount of reduction) exceeds the engagement limit pushing amount ⁇ L, the engagement correction control is performed using the engagement correction table of FIG. 10 corresponding to the steel type classification. .
- the pushing amount of the incoming pressure reduction cylinder is bitten.
- the push-in amount of the outlet side reduction cylinder is controlled to the corresponding push-out push amount ⁇ dE, which is the optimum push amount corresponding to the bite limit push-in amount ⁇ L.
- the pushing amount of the outlet side reduction cylinder is controlled to the corresponding outlet side pushing amount ⁇ dE corresponding to the biting limit pushing amount ⁇ L by the inlet side reduction cylinder. Since the pushing amount of the side pressure reduction cylinder is optimized, the occurrence of warpage of the metal plate P can be suppressed.
- the present invention is not limited to the above-described embodiment, and various modifications can be made.
- the case where the upper leveling roll is squeezed by the reduction cylinder to correct the shape of the metal plate has been described.
- the lower leveling roll is squeezed by the reduction cylinder to correct the shape of the metal plate. Also good.
Abstract
The roller leveler (100) has multiple leveling rolls (6, 8), pressing cylinders (4), and a control unit (30). When the established plunge for an entry side pressing cylinder that is necessary for leveling a metal plate (P) is greater than the limiting plunge for feed-in, the control unit (30) limits the entry side pressing cylinder plunge to the limiting plunge for feed-in on the basis of a feed-in compensation table until the feed-in compensation control distance is reached and when the leading end of the metal plate reaches the feed-in compensation control distance, controls the plunge of the entry side pressing cylinder (4) to equal the established plunge.
Description
本発明は、鋼板等の金属板を矯正するローラレベラおよびそれを用いた金属板の矯正方法に関する。
The present invention relates to a roller leveler for correcting a metal plate such as a steel plate and a method for correcting a metal plate using the roller leveler.
鋼板等の金属板を製造する過程では圧延や冷却などが実施されるが、これらの工程では金属板に反りや波形状の変形が発生する。このため、このような反りや波形状の変形を矯正して金属板を平坦化する目的で、複数本のレベリングロールを上下に千鳥状に配置したローラレベラが用いられる。
In the process of manufacturing a metal plate such as a steel plate, rolling and cooling are performed. In these processes, the metal plate is warped and deformed in a wave shape. For this reason, a roller leveler in which a plurality of leveling rolls are arranged in a staggered manner in the vertical direction is used for the purpose of correcting such warpage and wave shape deformation to flatten the metal plate.
ローラレベラは、矯正すべき金属板を、複数の下部レベリングロールに対し複数の上部レベリングロールを押し込んだ状態、または複数の上部レベリングロールに対して複数の下部レベリングロールを押し込んだ状態で通板し、金属板に繰り返し曲げを与えることによって、金属板の反りや波形状を平坦化する。一般的には、複数の下部レベリングロールおよび複数の上部レベリングロールをそれぞれロールフレームに保持させた状態とし、下部レベリングロールを固定し、上部レベリングロールを、入側および出側に設けられた圧下シリンダ（押圧シリンダ）により押し込んで金属板の矯正を行う。
The roller leveler passes the metal plate to be corrected in a state where a plurality of upper leveling rolls are pushed into a plurality of lower leveling rolls, or in a state where a plurality of lower leveling rolls are pushed into a plurality of upper leveling rolls, By repeatedly bending the metal plate, the warp and wave shape of the metal plate are flattened. Generally, a plurality of lower leveling rolls and a plurality of upper leveling rolls are held in a roll frame, the lower leveling rolls are fixed, and the upper leveling rolls are provided on the inlet side and the outlet side. The metal plate is corrected by being pushed in by the (pressing cylinder).
金属板の矯正に際しては、駆動モータによりレベリングロールが駆動され、レベリングロールと矯正すべき金属板とが接触することにより、金属板に駆動力が伝達され、金属板が上下のレベリングロール間に噛み込まれる。このとき、圧下シリンダによる上レベリングロールの押し込み量は、金属板の厚さ、材料、形状、レベリングロールの径、ロールピッチ等の種々の条件に応じて必要な平坦度が得られるように設定される。
When correcting the metal plate, the leveling roll is driven by the drive motor. When the leveling roll and the metal plate to be corrected come into contact with each other, the driving force is transmitted to the metal plate, and the metal plate is engaged between the upper and lower leveling rolls. Is included. At this time, the pushing amount of the upper leveling roll by the reduction cylinder is set so as to obtain the required flatness according to various conditions such as the thickness, material, shape, leveling roll diameter, roll pitch, etc. of the metal plate. The
しかし、押し込み量が過大な場合には、金属板とレベリングロールとがスリップするか、または板先端がレベリングロールに突っかかって、金属板を上下のレベリングロール間に噛み込ませることが困難となってしまう。また、無理に噛み込ませるとレベリングロール表面に疵が発生し、ロール手入れが必要になり、生産性が著しく低下する。
However, if the push-in amount is excessive, the metal plate and the leveling roll will slip, or the front end of the plate will hit the leveling roll, making it difficult to bite the metal plate between the upper and lower leveling rolls. End up. In addition, if it is forced to bite, wrinkles are generated on the surface of the leveling roll, which requires care for the roll, and the productivity is significantly reduced.
このような不都合を解消する技術として、特許文献１には、被矯正材が噛み込む前に、矯正効果を発揮するに必要な所望の入出側ロール押し込み量Ｓin、Ｓoutを求め、ついで、出側押し込み量Ｓoutとしたときの入り側ロール押し込み量の噛み込み限界値Ｓin
limを求め、ＳinがＳin
limよりも大きい場合に、比矯正材を噛み込ませる時の入り側ロール押し込み量Ｓin0がＳin
limより小さくなるように入り側押し込み装置および出側押し込み装置の少なくとも一方を開放して被矯正材を噛み込ませ、被矯正材が噛み込んだ後、入出側ロール押し込み量Ｓin、Ｓoutとなるまで押し込んで被矯正材を矯正する技術が開示されている。
As a technique for solving such inconvenience, Patent Document 1 obtains desired entry / exit side roll push-in amounts S in and S out necessary for exerting a correction effect before the material to be corrected bites, and then, An entry-side roll when the ratio-correcting material is bitten when the biting limit value S in lim of the entrance-side roll push-in amount when the exit-side push-in amount S out is set is obtained and S in is larger than S in lim At least one of the entry side push-in device and the exit side push-in device is opened so that the push amount S in0 is smaller than S in lim, and the material to be straightened is bitten. A technique is disclosed in which a material to be corrected is corrected by being pushed into the amounts S in and S out .
しかしながら、上記特許文献１では、矯正すべき金属板が上下のレベリングロール間に噛み込まないことを回避する指針とはなるものの、どのように制御するかについては十分に示されておらず、実際には、その都度被矯正材が噛み込んだことを確認してから押込量を設定値まで上昇する必要があり煩雑である。
However, in the above-mentioned Patent Document 1, although it serves as a guideline for avoiding that the metal plate to be corrected is not caught between the upper and lower leveling rolls, it does not sufficiently show how to control, and actually In this case, it is necessary to increase the pushing amount to the set value after confirming that the material to be corrected is bitten each time, which is complicated.
したがって、本発明の目的は、レベリングロールによる押込量を大きくする必要がある場合にも確実に矯正すべき金属板をレベリングロール間に噛み込ませることができ、その後速やかに押し込み量を設定値にして金属板の矯正を行うことができるローラレベラおよびそれを用いた矯正方法を提供することにある。
Therefore, the object of the present invention is to allow the metal plate to be reliably corrected to be bitten between the leveling rolls even when it is necessary to increase the pressing amount by the leveling roll, and then quickly set the pressing amount to the set value. It is another object of the present invention to provide a roller leveler capable of correcting a metal plate and a correction method using the roller leveler.
本発明の一の観点によれば、矯正すべき金属板の通板ラインの上下に千鳥状に配置され、金属板を挟んで金属板を矯正して通板させるように回転する複数のレベリングロールを有するレベリングロールユニットと、前記レベリングロールユニットにおける金属板の入側および出側にそれぞれ設けられ前記レベリングロールを介して金属板を押圧して押し込む押圧シリンダと、金属板が前記レベリングロールユニットの上下のレベリングロール間に噛込むように前記押圧シリンダによる金属板の押込量を制御する制御装置とを具備し、前記制御装置には、前記入側および出側の押圧シリンダの金属板の矯正に必要な設定押込量が入力されるとともに、矯正すべき金属板の厚さに応じて、金属板が前記レベリングロールユニットの上下のレベリングロール間に噛込む限界の前記入側の押圧シリンダの押込量である噛込限界押込量と、前記噛込限界押込量に制御すべき金属板先端の移動距離である噛込補正制御距離とを設定した噛込補正テーブルが入力され、前記制御装置は、前記入側の押圧シリンダの前記設定押込量が前記噛込限界押込量よりも大きい場合に、前記噛込補正テーブルに基づいて、噛込補正制御距離の間、前記入側の押圧シリンダの押込量を前記噛込限界押込量に制限し、金属板の先端が前記噛込補正制御距離に達した際に前記入側の押圧シリンダの押込量が前記設定押込量になるように制御する、ローラレベラが提供される。
According to one aspect of the present invention, a plurality of leveling rolls are arranged in a zigzag pattern above and below a plate passing line of a metal plate to be corrected, and rotate so as to correct the metal plate and pass through the metal plate. A leveling roll unit, a pressing cylinder that is provided on each of the entry side and the exit side of the metal plate in the leveling roll unit and presses and pushes the metal plate through the leveling roll, and the metal plate is located above and below the leveling roll unit. And a control device that controls the amount of pressing of the metal plate by the pressing cylinder so as to be caught between the leveling rolls of the control roller, and the control device is necessary for correcting the metal plates of the pressing cylinders on the entry side and the exit side. In addition to the input of the set push-in amount, the metal plate moves up and down the leveling roll unit according to the thickness of the metal plate to be corrected. The biting limit pushing amount that is the pushing amount of the pressing cylinder on the entry side at the limit of biting between the rolls, and the biting correction control distance that is the moving distance of the metal plate tip to be controlled to the biting limit pushing amount A set biting correction table is input, and the control device sets the biting correction table based on the biting correction table when the set pushing amount of the entry-side pressing cylinder is larger than the biting limit pushing amount. During the correction control distance, the pushing amount of the entry side pressing cylinder is limited to the biting limit pushing amount, and when the tip of the metal plate reaches the biting correction control distance, the entry side pushing cylinder is pushed. A roller leveler is provided that controls the amount to be the set push amount.
上記ローラレベラにおいて、前記噛込補正テーブルは、さらに金属板の先端が前記噛込補正制御距離に達した際に前記入側の押圧シリンダの押込量を前記設定押込量にする際の押圧速度が設定され、前記制御装置は、前記噛込補正テーブルに基づいて、前記入側の押圧シリンダの押込量が前記噛込限界押込量から前記設定押込量に変更する際の押圧速度を制御することが好ましい。
In the roller leveler, the biting correction table further sets a pressing speed when the pressing amount of the entry side pressing cylinder is set to the set pressing amount when the tip of the metal plate reaches the biting correction control distance. Preferably, the control device controls a pressing speed when the pressing amount of the entry-side pressing cylinder is changed from the biting limit pressing amount to the set pressing amount based on the biting correction table. .
また、前記噛込補正テーブルは、さらに、各板厚区分毎、および鋼種区分毎に、前記入側の押圧シリンダの押込量が前記噛込限界押込量のときに対応する、前記出側の押圧シリンダの対応押込量が設定され、前記制御装置は、前記入側の押圧シリンダの前記設定押込量が前記噛込限界押込量よりも大きい場合に、前記噛込補正テーブルに基づいて、噛込補正制御距離の間、前記入側の押圧シリンダの押込量を前記噛込限界押込量に制限するとともに、前記出側の押圧シリンダの押込量を前記対応押込量とし、金属板の先端が前記噛込補正制御距離に達した際に前記入側および出側の押圧シリンダの押込量が前記設定押込量になるように制御することが好ましい。
Further, the biting correction table further includes, for each plate thickness section and each steel type section, the outlet side pressing corresponding to the pressing amount of the pressing cylinder on the inlet side being the biting limit pressing amount. The corresponding pushing amount of the cylinder is set, and the control device corrects the biting correction based on the biting correction table when the setting pushing amount of the pressing cylinder on the entry side is larger than the biting limit pushing amount. During the control distance, the pushing amount of the inlet side pressing cylinder is limited to the biting limit pushing amount, the pushing amount of the outlet side pressing cylinder is set as the corresponding pushing amount, and the tip of the metal plate is the biting edge. When the correction control distance is reached, it is preferable to perform control so that the pressing amounts of the pressing cylinders on the entry side and the exit side become the set pushing amount.
本発明の他の観点によれば、矯正すべき金属板の通板ラインの上下に千鳥状に配置され、金属板を挟んで金属板を矯正して通板させるように回転する複数のレベリングロールを有するレベリングロールユニットと、前記レベリングロールユニットにおける金属板の入側および出側にそれぞれ設けられ前記レベリングロールを介して金属板を押圧して押し込む押圧シリンダとを具備するローラレベラにより金属板を矯正する金属板の矯正方法であって、前記入側および出側の押圧シリンダの金属板の矯正に必要な設定押込量、および矯正すべき金属板の厚さに応じて、金属板が前記レベリングロールユニットの上下のレベリングロール間に噛込む限界の前記入側の押圧シリンダの押込量である噛込限界押込量と、前記噛込限界押込量に制御すべき金属板先端の移動距離である噛込補正制御距離とを設定した噛込補正テーブルに基づき、前記入側の押圧シリンダの前記設定押込量が前記噛込限界押込量よりも大きい場合に、噛込補正制御距離の間、前記入側の押圧シリンダの押込量を前記噛込限界押込量に制限し、金属板の先端が前記噛込補正制御距離に達した際に前記入側の押圧シリンダの押込量が前記設定押込量になるようにすることを特徴とする金属板の矯正方法が提供される。
According to another aspect of the present invention, a plurality of leveling rolls are arranged in a zigzag pattern above and below the plate passing line of the metal plate to be corrected, and rotate so as to correct the metal plate and pass it through the metal plate. And a leveling roll unit having a roller, and a roller leveler provided on each of the leveling roll unit for pressing and pushing the metal plate through the leveling roll. A method of correcting a metal plate, wherein the metal plate is the leveling roll unit according to a set indentation amount necessary for correcting the metal plate of the input and output side pressing cylinders and a thickness of the metal plate to be corrected. The biting limit pushing amount that is the pushing amount of the pressing cylinder on the entry side at the limit of biting between the upper and lower leveling rolls and the biting limit pushing amount are controlled. Based on the biting correction table in which the biting correction control distance, which is the moving distance of the metal plate tip, is set, when the set push amount of the entry side push cylinder is larger than the biting limit push amount, During the insertion correction control distance, the pushing amount of the entry side pressing cylinder is limited to the biting limit pushing amount, and when the tip of the metal plate reaches the biting correction control distance, Provided is a method for correcting a metal plate, characterized in that the pressing amount is set to the set pressing amount.
上記金属板の矯正方法において、前記噛込補正テーブルは、さらに金属板の先端が前記噛込補正制御距離に達した際に前記入側の押圧シリンダの押込量を前記設定押込量にする際の押圧速度が設定され、前記噛込補正テーブルに基づいて、前記入側の押圧シリンダの押込量が前記噛込限界押込量から前記設定押込量に変更する際の押圧速度を制御することが好ましい。
In the metal plate correction method, the biting correction table further includes a step of setting the pressing amount of the entry-side pressing cylinder to the set pressing amount when the tip of the metal plate reaches the biting correction control distance. Preferably, a pressing speed is set, and the pressing speed when the pressing amount of the input pressing cylinder is changed from the biting limit pressing amount to the setting pressing amount is controlled based on the biting correction table.
また、前記噛込補正テーブルは、さらに、各板厚区分毎、および鋼種区分毎に、前記入側の押圧シリンダの押込量が前記噛込限界押込量のときに対応する、前記出側の押圧シリンダの対応押込量が設定され、前記入側の押圧シリンダの金属板の矯正に必要な設定押込量が前記噛込限界押込量よりも大きい場合に、前記噛込補正テーブルに基づいて、噛込補正制御距離の間、前記入側の押圧シリンダの押込量を前記噛込限界押込量に制限するとともに、前記出側の押圧シリンダの押込量を前記対応押込量になるようにし、金属板の先端が前記噛込補正制御距離に達した際に前記入側および出側の押圧シリンダの押込量が前記設定押込量になるようにすることが好ましい。
Further, the biting correction table further includes, for each plate thickness section and each steel type section, the outlet side pressing corresponding to the pressing amount of the pressing cylinder on the inlet side being the biting limit pressing amount. When the corresponding push amount of the cylinder is set and the set push amount necessary for correcting the metal plate of the entry side push cylinder is larger than the bit limit push amount, the bite is corrected based on the bite correction table. During the correction control distance, the pushing amount of the pressing cylinder on the entry side is limited to the pushing limit pushing amount, and the pushing amount of the pushing cylinder on the exit side is set to the corresponding pushing amount, so that the tip of the metal plate Is preferably set so that the pushing amount of the pushing cylinders on the entry side and the exit side becomes the set pushing amount when the bite correction control distance is reached.
以下、添付図面を参照して本発明の実施形態について説明する。
なお、以下の実施形態において、「圧下」という用語は、圧力を加えて押し込むことを意味し、圧力の方向は問わない。すなわち、「圧下」は「押圧」という用語に置き換えることができる。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
In the following embodiments, the term “reducing” means pushing in by applying pressure, and the direction of pressure is not limited. That is, “reducing” can be replaced by the term “pressing”.
なお、以下の実施形態において、「圧下」という用語は、圧力を加えて押し込むことを意味し、圧力の方向は問わない。すなわち、「圧下」は「押圧」という用語に置き換えることができる。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
In the following embodiments, the term “reducing” means pushing in by applying pressure, and the direction of pressure is not limited. That is, “reducing” can be replaced by the term “pressing”.
［第１の実施形態］
図１は本発明の第１の実施形態に係るローラレベラを示す側面図、図２はその正面図である。本実施形態のローラレベラ１００は、ハウジング１と、ハウジング１の内側に設けられた上フレーム２と、ハウジング１を支持するように設けられた下フレーム３とを有している。上フレーム２の下方には上ロールフレーム５が上ロールグリップシリンダ（図示せず）で吊り下げられている。一方、下フレーム３上には下ロールフレーム１０が設置されている。 [First Embodiment]
FIG. 1 is a side view showing a roller leveler according to the first embodiment of the present invention, and FIG. 2 is a front view thereof. The roller leveler 100 according to the present embodiment includes ahousing 1, an upper frame 2 provided inside the housing 1, and a lower frame 3 provided so as to support the housing 1. An upper roll frame 5 is suspended below the upper frame 2 by an upper roll grip cylinder (not shown). On the other hand, a lower roll frame 10 is installed on the lower frame 3.
図１は本発明の第１の実施形態に係るローラレベラを示す側面図、図２はその正面図である。本実施形態のローラレベラ１００は、ハウジング１と、ハウジング１の内側に設けられた上フレーム２と、ハウジング１を支持するように設けられた下フレーム３とを有している。上フレーム２の下方には上ロールフレーム５が上ロールグリップシリンダ（図示せず）で吊り下げられている。一方、下フレーム３上には下ロールフレーム１０が設置されている。 [First Embodiment]
FIG. 1 is a side view showing a roller leveler according to the first embodiment of the present invention, and FIG. 2 is a front view thereof. The roller leveler 100 according to the present embodiment includes a
上ロールフレーム５と下ロールフレーム１０との間には、上ロールフレーム５の下に上ロールフレーム５に支持されるように配置された複数本の上レベリングロール６と、上レベリングロール６の金属板Ｐのパスラインを挟んで反対側に設けられ下ロールフレーム１０に支持された複数本の下レベリングロール８とを有するレベリングロールユニット２０が設けられている。レベリングロールユニット２０の金属板Ｐの搬送方向上流側および下流側には、金属板Ｐをガイドするガイドロール１４が設けられている。上レベリングロール６および下レベリングロール８は、駆動装置（図示せず）により正逆回転されるようになっており、金属板Ｐを双方向（図１におけるＡ方向およびＢ方向）に移動して矯正することが可能となっている。
Between the upper roll frame 5 and the lower roll frame 10, a plurality of upper leveling rolls 6 arranged to be supported by the upper roll frame 5 below the upper roll frame 5, and the metal of the upper leveling roll 6 A leveling roll unit 20 having a plurality of lower leveling rolls 8 provided on the opposite side across the pass line of the plate P and supported by the lower roll frame 10 is provided. Guide rolls 14 for guiding the metal plate P are provided on the upstream side and the downstream side in the conveying direction of the metal plate P of the leveling roll unit 20. The upper leveling roll 6 and the lower leveling roll 8 are rotated forward and backward by a driving device (not shown), and move the metal plate P in both directions (A direction and B direction in FIG. 1). It is possible to correct.
上レベリングロール６の上には、上レベリングロール６をバックアップする短尺の上バックアップロール７が上レベリングロール６の軸方向に沿って上ロールフレーム５に支持されるように複数配置されている。また、下レベリングロール８の下には、下レベリングロール８をバックアップする短尺の下バックアップロール９が下レベリングロール８の軸方向に沿って下ロールフレーム１０に支持されるように複数配置されている。
A plurality of short upper backup rolls 7 for backing up the upper leveling roll 6 are arranged on the upper leveling roll 6 so as to be supported by the upper roll frame 5 along the axial direction of the upper leveling roll 6. A plurality of short lower backup rolls 9 for backing up the lower leveling rolls 8 are arranged below the lower leveling rolls 8 so as to be supported by the lower roll frame 10 along the axial direction of the lower leveling rolls 8. .
ハウジング１と上フレーム２との間のレベリングロールユニット２０の金属板Ｐ搬送方向の両端には、それぞれ金属板Ｐを矯正するための圧下力（押圧力）を与えるための圧下シリンダ（押圧シリンダ）４ａおよび４ｂが配置されている。圧下シリンダ４ａおよび４ｂは、金属板Ｐの幅方向の両端部にそれぞれ２基設けられている（図２参照。ただし、図２では圧下シリンダ４ａのみ図示）。
A reduction cylinder (pressing cylinder) for applying a reduction force (pressing force) for correcting the metal plate P to both ends of the leveling roll unit 20 between the housing 1 and the upper frame 2 in the conveying direction of the metal plate P. 4a and 4b are arranged. Two rolling-down cylinders 4a and 4b are provided at both ends in the width direction of the metal plate P (see FIG. 2, but only the rolling-down cylinder 4a is shown in FIG. 2).
圧下シリンダ４ａおよび４ｂは、下ロールフレーム１０に固定的に設けられた下レベリングロール８に対して、上ロールフレーム５および上バックアップロール７および上レベリングロール６を介して金属板Ｐを圧下する（すなわち押圧して押し込む）ようになっている。金属板ＰをＡ方向へ搬送する場合には、圧下シリンダ４ａが入側の圧下シリンダとして機能し、圧下シリンダ４ｂが出側の圧下シリンダとして機能する。また、金属板ＰをＢ方向へ搬送する場合には、圧下シリンダ４ｂが入側の圧下シリンダとして機能し、圧下シリンダ４ａが出側の圧下シリンダとして機能する。なお、上レベリングロール６を固定的に設け、下レベリングロール８を圧下シリンダで圧下するようにしてもよい。
The reduction cylinders 4a and 4b reduce the metal plate P through the upper roll frame 5, the upper backup roll 7 and the upper leveling roll 6 with respect to the lower leveling roll 8 fixedly provided on the lower roll frame 10 ( That is, it pushes and pushes in). When the metal plate P is conveyed in the direction A, the reduction cylinder 4a functions as an entry-side reduction cylinder, and the reduction cylinder 4b functions as an exit-side reduction cylinder. When the metal plate P is conveyed in the direction B, the reduction cylinder 4b functions as an entry-side reduction cylinder, and the reduction cylinder 4a functions as an exit-side reduction cylinder. The upper leveling roll 6 may be fixedly provided, and the lower leveling roll 8 may be reduced by a reduction cylinder.
本実施形態のローラレベラ１００の各構成要素は、制御装置３０により制御される構成となっている。制御装置３０は、図３に示すように、プロセスコントローラ３１と、入力等を行う操作部３２と、処理に必要な情報を記憶する記憶部３３とを有している。
Each component of the roller leveler 100 of this embodiment is configured to be controlled by the control device 30. As illustrated in FIG. 3, the control device 30 includes a process controller 31, an operation unit 32 that performs input and the like, and a storage unit 33 that stores information necessary for processing.
操作部３２と記憶部３３とはプロセスコントローラ３１に接続されている。操作部３２は、例えばタッチパネル方式のディスプレイからなっており、処理に必要な情報を入力するようになっている。記憶部３３は、一時的に情報の読み出しおよび書き込みを行う機能と、ローラレベラ１００で実行される各種処理を行うために必要な制御プログラムを記憶する機能を有している。
The operation unit 32 and the storage unit 33 are connected to the process controller 31. The operation unit 32 is made up of a touch panel display, for example, and inputs information necessary for processing. The storage unit 33 has a function of temporarily reading and writing information, and a function of storing a control program necessary for performing various processes executed by the roller leveler 100.
制御装置３０は、このようにローラレベラ１００の全体を制御するものであるが、本実施形態では、圧下シリンダ４ａおよび４ｂの圧下制御、特に噛込補正制御に主眼があり、以下その点について説明する。
The control device 30 controls the entire roller leveler 100 as described above. In this embodiment, the control device 30 mainly focuses on the reduction control of the reduction cylinders 4a and 4b, particularly the biting correction control, and this point will be described below. .
制御装置３０には、金属板Ｐの厚さ等に応じて金属板Ｐのレベリング（矯正）に必要な圧下シリンダ４ａおよび４ｂの押込量（圧下量）が設定されている。しかし、入側の圧下シリンダ（金属板Ｐの搬送方向がＡ方向の場合には圧下シリンダ４ａ）の設定された押込量（設定押込量）が、金属板Ｐが噛込む限界の押込量（噛込限界押込量）を超えている場合には金属板Ｐが上レベリングロール６および下レベリングロール８間に噛み込まれない噛込不良が生じる。そのため、このような噛込不良を防止するために制御装置３０（プロセスコントローラ３１）に図４に例示されるような噛込補正テーブルが入力されるようになっている。この噛込補正テーブルは、操作部３２のタッチパネルで入力されるようになっている。また、図４の噛込補正テーブルが記憶された記憶媒体を読み込むことにより入力してもよい。
In the control device 30, the pressing amount (the amount of reduction) of the reduction cylinders 4 a and 4 b necessary for leveling (correcting) the metal plate P is set according to the thickness of the metal plate P and the like. However, the set push amount (set push amount) of the entry side reduction cylinder (the reduction cylinder 4a when the conveyance direction of the metal plate P is the A direction) is the limit push amount (the engagement amount). In the case of exceeding the insertion limit pushing amount), the metal plate P does not bite between the upper leveling roll 6 and the lower leveling roll 8, and a biting failure occurs. Therefore, in order to prevent such a biting failure, a biting correction table as illustrated in FIG. 4 is input to the control device 30 (process controller 31). This biting correction table is input on the touch panel of the operation unit 32. Further, it may be inputted by reading a storage medium storing the biting correction table of FIG.
図４の噛込補正テーブルにおいては、各板厚区分毎に、噛込限界押込量δＬ（ｍｍ）と、噛込補正制御距離Ｌｂ（ｍｍ）と、圧下補正速度ＩＶ（ｍｍ／ｓｅｃ）とが設定されている。そして、入側の圧下シリンダの押込量（圧下量）の設定値が噛込限界押込量δＬを超える場合に、図４の噛込補正テーブルを用いて噛込補正制御が実施される。具体的には、金属板Ｐの先端が入側の基準レベリングロール（搬送方向がＡ方向の場合には左端のレベリングロール）の頂点からＬｂの距離だけ噛込む間の押込量を噛込限界押込量δＬに制御し、入側の基準レベリングロールからＬｂの距離だけ噛み込んだ後に噛込補正テーブルに設定された圧下補正速度ＩＶにて入側の圧下シリンダの押込量（圧下量）が設定押込量になるように制御する。このときの金属板Ｐの位置情報は、レベリングロールユニット２０内のパスラインに沿って、金属板Ｐの先端の位置を検出するための複数の光学式センサ（図示せず）を設け、これらにより金属板の先端を検出後、パルスジェネレータ（図示せず）を用いて金属板Ｐの先端をトラッキングすることにより求めることができる。
In the biting correction table of FIG. 4, the biting limit pushing amount δL (mm), the biting correction control distance Lb (mm), and the reduction correction speed IV (mm / sec) are obtained for each plate thickness category. Is set. Then, when the set value of the pressing amount (the pressing amount) of the inlet-side reduction cylinder exceeds the engagement limit pushing amount δL, the engagement correction control is performed using the engagement correction table of FIG. Specifically, the biting limit push-in amount is set while the tip of the metal plate P is bitten by a distance of Lb from the apex of the reference leveling roll on the entry side (left-leveling roll when the transport direction is A). After controlling the amount δL and biting the distance Lb from the reference leveling roll on the input side, the pressing amount (down amount) of the input side reduction cylinder at the reduction correction speed IV set in the biting correction table is set. Control the amount. The position information of the metal plate P at this time is provided with a plurality of optical sensors (not shown) for detecting the position of the tip of the metal plate P along the pass line in the leveling roll unit 20. After detecting the tip of the metal plate, it can be obtained by tracking the tip of the metal plate P using a pulse generator (not shown).
次に、このように構成されるローラレベラ１００により金属板Ｐの矯正を行う際の動作について説明する。
Next, an operation when the metal plate P is corrected by the roller leveler 100 configured as described above will be described.
まず、ローラレベラ１００のレベリングロールユニット２０の上流側からガイドロール１４にガイドされた状態で金属板Ｐをレベリングロールユニット２０へ向けて搬送し、上レベリングロール６と下レベリングロール８との間に挿入する。例えば、金属板Ｐの搬送方向がＡ方向の場合には、図１の左側から金属板Ｐがレベリングユニット２０に搬送され、圧下シリンダ４ａが入側の圧下シリンダとなる。
First, the metal plate P is conveyed toward the leveling roll unit 20 while being guided by the guide roll 14 from the upstream side of the leveling roll unit 20 of the roller leveler 100, and is inserted between the upper leveling roll 6 and the lower leveling roll 8. To do. For example, when the conveyance direction of the metal plate P is the A direction, the metal plate P is conveyed from the left side of FIG. 1 to the leveling unit 20, and the reduction cylinder 4a becomes the entry side reduction cylinder.
このとき、金属板Ｐの厚さ等に応じて金属板Ｐのレベリング（矯正）に必要な圧下シリンダ４ａおよび４ｂの押込量（圧下量）が制御装置３０に設定されており、その設定された押込量（圧下量）で金属板Ｐの矯正が行われる。
At this time, the pressing amount (the amount of reduction) of the reduction cylinders 4a and 4b necessary for leveling (correction) of the metal plate P is set in the control device 30 according to the thickness of the metal plate P and the like. The metal plate P is corrected with the pushing amount (the amount of reduction).
しかし、入側の圧下シリンダ（金属板Ｐの搬送方向がＡ方向の場合には圧下シリンダ４ａ）の設定された押込量（圧下量）が、噛込限界押込量を超えている場合には金属板Ｐが上レベリングロール６および下レベリングロール８間に噛み込まれない噛込不良が生じる。
However, if the set push-in amount (roll-down cylinder 4a when the conveying direction of the metal plate P is A direction) exceeds the biting limit push-in amount A biting defect occurs in which the plate P is not bitten between the upper leveling roll 6 and the lower leveling roll 8.
したがって、このような場合には、図４の噛込補正テーブルに基づいて噛込補正制御を行って、このような噛込不良を防止する。なお、図４の噛込補正テーブルは、実際には具体的な数値が記入されている。
Therefore, in such a case, biting correction control is performed based on the biting correction table of FIG. 4 to prevent such biting failure. In the bite correction table of FIG. 4, actual numerical values are actually entered.
具体的には、金属板Ｐがレベリングロールユニット２０の上レベリングロール６および下レベリングロール８間に噛込まれる前に、制御装置３０のプロセスコントローラ３１により、板厚等の条件に応じて設定された入側の圧下シリンダの設定押込量δｅ１と図４の噛込補正テーブルにおける金属板Ｐの板厚区分に対応する噛込限界押込量δＬとを比較する。そして、設定押込量δｅ１が噛込限界押込量δＬを超える場合には、噛込補正モードに移行する。
Specifically, before the metal plate P is caught between the upper leveling roll 6 and the lower leveling roll 8 of the leveling roll unit 20, it is set by the process controller 31 of the control device 30 according to conditions such as the plate thickness. The set pushing amount δe1 of the inlet-side reduction cylinder is compared with the biting limit pushing amount δL corresponding to the plate thickness classification of the metal plate P in the biting correction table of FIG. When the set pushing amount δe1 exceeds the biting limit pushing amount δL, the mode shifts to the biting correction mode.
すなわち、図５に示すように、設定押込量δｅ１が噛込限界押込量δＬを超える場合には、金属板Ｐが噛込む際の実際の入側圧下シリンダの押込量を設定押込量δｅ１から噛込限界押込量δＬに制限し、そのような押込量の制限を、金属板Ｐの先端が入側の基準レベリングロール（図５では＃１のレベリングロール）の頂点から図４の補正テーブルに設定されたＬｂの距離だけ噛込む間継続し、図６に示すように、金属板Ｐの先端が入側の基準レベリングロールからＬｂの距離だけ噛み込んだ後に噛込補正テーブルに設定された圧下補正速度ＩＶにて入側の圧下シリンダの押込量（圧下量）を設定押込量δｅ１にセットアップする。なお、図５、６には、最も入側の基準レベリングロールを＃１とし、その後のレベリングロールについて左から右へ順に＃２～＃９と番号を付している。
That is, as shown in FIG. 5, when the set pushing amount δe1 exceeds the biting limit pushing amount δL, the actual pushing amount of the inlet pressure reduction cylinder when the metal plate P is bited is changed from the setting pushing amount δe1. The limit of pressing amount δL is limited, and such a pressing amount limit is set in the correction table in FIG. 4 from the apex of the reference leveling roll (# 1 leveling roll in FIG. 5) on the leading end of the metal plate P. As shown in FIG. 6, the reduction correction set in the biting correction table after the tip of the metal plate P bites the distance Lb from the reference leveling roll on the input side as shown in FIG. At the speed IV, the push-in amount (roll-down amount) of the inlet side reduction cylinder is set up to the set push-in amount δe1. 5 and 6, the reference leveling roll on the most input side is # 1, and the subsequent leveling rolls are numbered sequentially from left to right as # 2 to # 9.
一般的に、金属板Ｐの噛込段階において、押込量が噛込限界押込量δＬであれば金属板Ｐは上下レベリングロール間に噛み込まれるが、この噛込限界押込量δＬは金属板Ｐの板厚にほぼ比例する。そして、金属板Ｐが所定の長さ噛込むと押込量を噛込限界押込量δＬよりも大きくしても噛込み不良が生じなくなる。このため、金属板Ｐの板厚に応じて噛込補正テーブルに、噛込限界押込量δＬを設定し、さらに上記所定の長さを噛込補正制御距離Ｌｂとして設定しておくことにより、噛込不良を確実に防止しつつ、速やかに設定押込量δｅ１にセットアップして金属板Ｐの矯正を行うことができ、金属板Ｐの矯正歩留まりを高く維持することができる。
In general, when the pushing amount is the biting limit pushing amount δL at the biting stage of the metal plate P, the metal plate P is bitten between the upper and lower leveling rolls, but this biting limit pushing amount δL is the metal plate P. It is almost proportional to the plate thickness. When the metal plate P is bitten by a predetermined length, no biting failure occurs even if the pushing amount is larger than the biting limit pushing amount δL. Therefore, by setting the biting limit pushing amount δL in the biting correction table according to the thickness of the metal plate P and further setting the predetermined length as the biting correction control distance Lb, The metal plate P can be corrected by setting it up to the set push amount δe1 promptly while reliably preventing the defective insertion, and the correction yield of the metal plate P can be kept high.
また、圧下補正速度ＩＶは、噛み込み限界押し込み量から設定押し込み量δｅ１にするまでの速度であり、この圧下補正速度ＩＶも金属板Ｐの板厚に応じて適正な値が存在するので、補正テーブルに圧下補正速度ＩＶを設定しておくことにより、最適な速度で設定押込量δｅ１にセットアップすることができる。
The reduction correction speed IV is a speed from the biting limit pushing amount to the set pushing amount δe1, and this reduction correction velocity IV also has an appropriate value according to the thickness of the metal plate P. By setting the reduction correction speed IV in the table, the set pushing amount δe1 can be set up at an optimum speed.
以上のように、本実施形態によれば、矯正すべき金属板の厚さに応じて、金属板がレベリングロールユニットの上下のレベリングロール間に噛込む限界の入側の押圧シリンダの押込量である噛込限界押込量と、噛込限界押込量に制御すべき金属板先端の移動距離である噛込補正制御距離とを設定した噛込補正テーブルを制御装置に入力し、制御装置は、入側の圧下シリンダの金属板の矯正に必要な設定押込量が噛込限界押込量よりも大きい場合に、噛込補正テーブルに基づいて、噛込補正制御距離の間、入側の圧下シリンダの押込量を噛込限界押込量に制限し、金属板の先端が噛込補正制御距離に達した際に入側の圧下シリンダの押込量が設定押込量になるように制御するので、噛込不良を確実に防止しつつ、速やかに設定押込量にセットアップして金属板の矯正を行うことができ、金属板の矯正歩留まりを高く維持することができる。
As described above, according to the present embodiment, depending on the thickness of the metal plate to be corrected, the pressing amount of the pressing cylinder on the entry side at the limit that the metal plate bites between the upper and lower leveling rolls of the leveling roll unit. A biting correction table in which a certain biting limit pushing amount and a biting correction control distance that is the moving distance of the metal plate tip to be controlled to the biting limit pushing amount is input to the control device. When the set push-in amount necessary for correcting the metal plate of the side reduction cylinder is larger than the biting limit push-in amount, the push-in of the input side reduction cylinder is pushed during the bite correction control distance based on the bite correction table. The amount is limited to the biting limit push-in amount, and when the tip of the metal plate reaches the bite correction control distance, control is performed so that the push-in amount of the inlet reduction cylinder becomes the set push-in amount. Set to the set push-in amount promptly while ensuring prevention -Up to be able to perform the correction of the metal plate, it is possible to maintain a high straightening yield of the metal plate.
次に、本発明の第２の実施形態について説明する。
本実施形態に係るローラレベラは、基本構造は第１の実施形態のローラレベラ１００と同じであり、噛込補正制御の方式のみ第１の実施形態とは異なっている。 Next, a second embodiment of the present invention will be described.
The roller leveler according to the present embodiment has the same basic structure as theroller leveler 100 of the first embodiment, and is different from the first embodiment only in the method of biting correction control.
本実施形態に係るローラレベラは、基本構造は第１の実施形態のローラレベラ１００と同じであり、噛込補正制御の方式のみ第１の実施形態とは異なっている。 Next, a second embodiment of the present invention will be described.
The roller leveler according to the present embodiment has the same basic structure as the
上記第１の実施形態では、入側圧下シリンダの設定押込量δｅ１が噛込限界押込量δＬを超える場合に、入側圧下シリンダの押込量を噛込限界押込量δＬに制限する噛込補正制御を行い、金属板Ｐの先端が入側の基準レベリングロールの頂点から噛込補正制御距離Ｌｂだけ噛み込んだ後に、入側圧下シリンダの押込量が設定押込量δｅ１になるようにした。
In the first embodiment, when the set pushing amount δe1 of the inlet side reduction cylinder exceeds the biting limit pushing amount δL, the biting correction control for limiting the pushing amount of the inlet side pressing cylinder to the biting limit pushing amount δL. After the leading end of the metal plate P has been bitten by the biting correction control distance Lb from the apex of the inlet-side reference leveling roll, the pressing amount of the inlet-side pressure reduction cylinder is set to the set pressing amount δe1.
しかし、第１の実施形態では、出側圧下シリンダについては、噛込補正制御に対応した押込量の制御は行っていない。すなわち、第１の実施形態では、出側圧下シリンダの設定押込量δｄ１は、入側圧下シリンダの設定押込量δｅ１に対応して最も反りが小さくなる値とされていた。したがって、第１の実施形態の噛込補正制御において、入側圧下シリンダの押込量を噛込限界押込量δＬとした際に、出側圧下シリンダでは最適な押し込み量とならない場合がある。このとき、被矯正材である金属板Ｐが高張力鋼板等の硬くて薄い材料である場合には、図７に示すように、金属板Ｐにおいて噛込補正が行われた噛込補正領域（噛込補正制御距離Ｌｂ＋押込量をδＬからδｅ１に変更する際の距離α）において金属板Ｐが反ってしまう場合がある。このように金属板Ｐに反りが発生すると、その反りが下反りの場合には、図８に示すように、ガイドロール（テーブルロール）１４の間の距離が１ｍ程度あることから、金属板Ｐの先端がガイドロール１４に当たる等の不都合が生じ、その反りが上反りの場合には、図９に示すように、レベリングロールユニット２０の両側に配置された、金属板Ｐを押さえて通板させやすくするためのホールドダウンロール４１に当たったり、付属機器（図示せず）に当たったりする不都合が生じる。
However, in the first embodiment, the control of the pushing amount corresponding to the biting correction control is not performed for the outlet side reduction cylinder. That is, in the first embodiment, the set pushing amount δd1 of the outlet side reduction cylinder is set to a value with the smallest warpage corresponding to the setting pushing amount δe1 of the entry side reduction cylinder. Therefore, in the biting correction control of the first embodiment, when the pushing amount of the inlet side pressure reduction cylinder is set to the biting limit pushing amount δL, there is a case where the optimum pushing amount is not obtained in the outlet side pressure reduction cylinder. At this time, when the metal plate P as the material to be corrected is a hard and thin material such as a high-tensile steel plate, the biting correction area (in which biting correction is performed in the metal plate P (see FIG. 7)). The metal plate P may be warped at the biting correction control distance Lb + the distance α) when the pressing amount is changed from δL to δe1. When warpage occurs in the metal plate P in this way, when the warpage is downward warpage, the distance between the guide rolls (table rolls) 14 is about 1 m as shown in FIG. In the case where the leading edge of the roller hits the guide roll 14 and the warpage is warped upward, as shown in FIG. 9, the metal plates P arranged on both sides of the leveling roll unit 20 are pressed and passed. There arises an inconvenience of hitting the hold-down roll 41 for facilitating or hitting an attached device (not shown).
そこで、本実施形態では、図１０に示すように、各板厚区分毎に、図４と同様の項目が設定される他、各板厚区分毎に、入側圧下シリンダの押込量が噛込限界押込量δＬ（ｍｍ）のときに対応する最適な出側圧下シリンダの押込量である対応出側押込量δｄＥ（ｍｍ）が設定された噛込補正テーブルを制御装置３０（プロセスコントローラ３１）に入力する。ただし、出側の最適圧下量は降伏応力にも依存するため、鋼種区分毎に対応出側押込量δｄＥ（ｍｍ）を設定した補正テーブルを作成する。そして、入側圧下シリンダの押込量（圧下量）設定値が噛込限界押込量δＬを超える場合に、鋼種区分に応じた図１０の噛込補正テーブルを用いて噛込補正制御が実施される。
Therefore, in the present embodiment, as shown in FIG. 10, the same items as in FIG. 4 are set for each plate thickness section, and the pressing amount of the inlet side reduction cylinder is bitten for each plate thickness section. A control table 30 (process controller 31) stores a bite correction table in which a corresponding output side push amount δdE (mm), which is an optimal push amount of the output side reduction cylinder corresponding to the limit push amount δL (mm), is set. input. However, since the optimum reduction amount on the delivery side depends on the yield stress, a correction table in which the corresponding delivery side pushing amount δdE (mm) is set for each steel type section is created. Then, when the set value of the indentation side reduction cylinder (the amount of reduction) exceeds the engagement limit pushing amount δL, the engagement correction control is performed using the engagement correction table of FIG. 10 corresponding to the steel type classification. .
具体的には、図１１に示すように、金属板Ｐの先端が入側の基準レベリングロールの頂点からＬｂの距離だけ噛込む間の噛込補正制御時に、入側圧下シリンダの押込量を噛込限界押込量δＬに制御するとともに、出側圧下シリンダの押込量を、噛込限界押込量δＬに対応する最適な押込量である対応出側押込量δｄＥに制御する。そして、入側の基準レベリングロールからＬｂの距離だけ噛み込んだ後の噛込補正制御終了後は、噛込補正テーブルに設定された圧下補正速度ＩＶにて入側圧下シリンダおよび出側圧下シリンダの押込量（圧下量）が、設定押込量δｅ１、δｄ１になるように制御する。
Specifically, as shown in FIG. 11, during the biting correction control while the leading end of the metal plate P is bitten by a distance of Lb from the apex of the incoming reference leveling roll, the pushing amount of the incoming pressure reduction cylinder is bitten. In addition to controlling the push-in limit push amount δL, the push-in amount of the outlet side reduction cylinder is controlled to the corresponding push-out push amount δdE, which is the optimum push amount corresponding to the bite limit push-in amount δL. After completion of the biting correction control after biting by a distance of Lb from the reference leveling roll on the input side, the inlet side reduction cylinder and the output side reduction cylinder are set at the reduction correction speed IV set in the biting correction table. Control is performed so that the pushing amount (the amount of reduction) becomes the set pushing amounts δe1 and δd1.
このように、噛込補正制御を行っている際に、入側圧下シリンダによる噛込限界押込量δＬに対応して、出側圧下シリンダの押込量を対応出側押込量δｄＥに制御して出側圧下シリンダの押込量を最適化するので、金属板Ｐの反りの発生を抑制することができる。
In this way, when performing the biting correction control, the pushing amount of the outlet side reduction cylinder is controlled to the corresponding outlet side pushing amount δdE corresponding to the biting limit pushing amount δL by the inlet side reduction cylinder. Since the pushing amount of the side pressure reduction cylinder is optimized, the occurrence of warpage of the metal plate P can be suppressed.
なお、本発明は、上記実施形態に限定されることなく、種々の変形が可能である。例えば、上記実施形態では、上レベリングロールを圧下シリンダで圧下して金属板の形状を矯正する場合について示したが、下レベリングロールを圧下シリンダで圧下して金属板の形状を矯正するようにしてもよい。
The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, in the above-described embodiment, the case where the upper leveling roll is squeezed by the reduction cylinder to correct the shape of the metal plate has been described. However, the lower leveling roll is squeezed by the reduction cylinder to correct the shape of the metal plate. Also good.
１；ハウジング
２；上フレーム
３；下フレーム
４ａ，４ｂ；圧下シリンダ
５；上ロールフレーム
６；上レベリングロール
７；上バックアップロール
８；下レベリングロール
９；下バックアップロール
１０；上ロールフレーム
２０；レベリングロールユニット
３０；制御装置
３１；プロセスコントローラ
３２；操作部
３３；記憶部
１００；ローラレベラ
Ｐ；金属板（被矯正材） DESCRIPTION OFSYMBOLS 1; Housing 2; Upper frame 3; Lower frame 4a, 4b; Reduction cylinder 5; Upper roll frame 6; Upper leveling roll 7; Upper backup roll 8; Lower leveling roll 9; Lower backup roll 10; Upper roll frame 20; Roll unit 30; Control device 31; Process controller 32; Operation unit 33; Storage unit 100; Roller leveler P; Metal plate (material to be corrected)
２；上フレーム
３；下フレーム
４ａ，４ｂ；圧下シリンダ
５；上ロールフレーム
６；上レベリングロール
７；上バックアップロール
８；下レベリングロール
９；下バックアップロール
１０；上ロールフレーム
２０；レベリングロールユニット
３０；制御装置
３１；プロセスコントローラ
３２；操作部
３３；記憶部
１００；ローラレベラ
Ｐ；金属板（被矯正材） DESCRIPTION OF
Claims (6)
- 矯正すべき金属板の通板ラインの上下に千鳥状に配置され、金属板を挟んで金属板を矯正して通板させるように回転する複数のレベリングロールを有するレベリングロールユニットと、
前記レベリングロールユニットにおける金属板の入側および出側にそれぞれ設けられ前記レベリングロールを介して金属板を押圧して押し込む押圧シリンダと、
金属板が前記レベリングロールユニットの上下のレベリングロール間に噛込むように前記押圧シリンダによる金属板の押込量を制御する制御装置と
を具備し、
前記制御装置には、前記入側および出側の押圧シリンダの金属板の矯正に必要な設定押込量が入力されるとともに、矯正すべき金属板の厚さに応じて、金属板が前記レベリングロールユニットの上下のレベリングロール間に噛込む限界の前記入側の押圧シリンダの押込量である噛込限界押込量と、前記噛込限界押込量に制御すべき金属板先端の移動距離である噛込補正制御距離とを設定した噛込補正テーブルが入力され、
前記制御装置は、前記入側の押圧シリンダの前記設定押込量が前記噛込限界押込量よりも大きい場合に、前記噛込補正テーブルに基づいて、噛込補正制御距離の間、前記入側の押圧シリンダの押込量を前記噛込限界押込量に制限し、金属板の先端が前記噛込補正制御距離に達した際に前記入側の押圧シリンダの押込量が前記設定押込量になるように制御する、ローラレベラ。 A leveling roll unit having a plurality of leveling rolls arranged in a zigzag pattern above and below the plate passing line of the metal plate to be corrected and rotating so as to correct the metal plate and pass through the metal plate;
A pressing cylinder that is provided on the entry side and the exit side of the metal plate in the leveling roll unit and presses and pushes the metal plate through the leveling roll; and
A control device for controlling the pressing amount of the metal plate by the pressing cylinder so that the metal plate is engaged between the upper and lower leveling rolls of the leveling roll unit;
The control device is inputted with a set indentation amount necessary for correcting the metal plates of the input side and the output side pressing cylinders, and the metal plate is moved to the leveling roll according to the thickness of the metal plate to be corrected. The biting limit pushing amount that is the pushing amount of the pressing cylinder on the entry side at the limit of biting between the upper and lower leveling rolls of the unit, and the biting that is the moving distance of the metal plate tip to be controlled to the biting limit pushing amount The biting correction table that sets the correction control distance is input,
When the set pushing amount of the entry side pressing cylinder is larger than the biting limit pushing amount, the control device performs the biting correction control distance based on the biting correction control distance during the biting correction control distance. The pushing amount of the pressing cylinder is limited to the biting limit pushing amount, and when the tip of the metal plate reaches the biting correction control distance, the pushing amount of the pressing cylinder on the entry side becomes the set pushing amount. Roller leveler to control. - 前記噛込補正テーブルは、さらに金属板の先端が前記噛込補正制御距離に達した際に前記入側の押圧シリンダの押込量を前記設定押込量にする際の押圧速度が設定され、前記制御装置は、前記噛込補正テーブルに基づいて、前記入側の押圧シリンダの押込量が前記噛込限界押込量から前記設定押込量に変更する際の押圧速度を制御する、請求項１に記載のローラレベラ。 In the biting correction table, a pressing speed for setting the pressing amount of the pressing cylinder on the entry side to the set pressing amount when the tip of the metal plate reaches the biting correction control distance is set, and the control 2. The device according to claim 1, wherein the device controls a pressing speed when the pressing amount of the input pressing cylinder is changed from the biting limit pressing amount to the set pressing amount based on the biting correction table. Laura Leveler.
- 前記噛込補正テーブルは、さらに、各板厚区分毎、および鋼種区分毎に、前記入側の押圧シリンダの押込量が前記噛込限界押込量のときに対応する、前記出側の押圧シリンダの対応押込量が設定され、
前記制御装置は、前記入側の押圧シリンダの前記設定押込量が前記噛込限界押込量よりも大きい場合に、前記噛込補正テーブルに基づいて、噛込補正制御距離の間、前記入側の押圧シリンダの押込量を前記噛込限界押込量に制限するとともに、前記出側の押圧シリンダの押込量を前記対応押込量とし、金属板の先端が前記噛込補正制御距離に達した際に前記入側および出側の押圧シリンダの押込量が前記設定押込量になるように制御する、請求項１または請求項２に記載のローラレベラ。 The biting correction table is further provided for each of the sheet-thickness divisions and the steel grade divisions of the outlet-side pressing cylinder corresponding to when the pressing amount of the inlet-side pressing cylinder is the biting limit pressing amount. The corresponding push amount is set,
When the set pushing amount of the entry-side pressing cylinder is larger than the biting limit pushing amount, the control device performs the biting correction control distance based on the biting correction control distance during the biting correction control distance. The pushing amount of the pressing cylinder is limited to the biting limit pushing amount, the pushing amount of the pushing cylinder on the outlet side is set as the corresponding pushing amount, and when the tip of the metal plate reaches the biting correction control distance, 3. The roller leveler according to claim 1, wherein the pressing level of the writing cylinder on the entry side and the pressing side is controlled so as to be the set pressing amount. 4. - 矯正すべき金属板の通板ラインの上下に千鳥状に配置され、金属板を挟んで金属板を矯正して通板させるように回転する複数のレベリングロールを有するレベリングロールユニットと、前記レベリングロールユニットにおける金属板の入側および出側にそれぞれ設けられ前記レベリングロールを介して金属板を押圧して押し込む押圧シリンダとを具備するローラレベラにより金属板を矯正する金属板の矯正方法であって、
前記入側および出側の押圧シリンダの金属板の矯正に必要な設定押込量、および矯正すべき金属板の厚さに応じて、金属板が前記レベリングロールユニットの上下のレベリングロール間に噛込む限界の前記入側の押圧シリンダの押込量である噛込限界押込量と、前記噛込限界押込量に制御すべき金属板先端の移動距離である噛込補正制御距離とを設定した噛込補正テーブルに基づき、前記入側の押圧シリンダの金属板の前記設定押込量が前記噛込限界押込量よりも大きい場合に、噛込補正制御距離の間、前記入側の押圧シリンダの押込量を前記噛込限界押込量に制限し、金属板の先端が前記噛込補正制御距離に達した際に前記入側の押圧シリンダの押込量が前記設定押込量になるようにすることを特徴とする金属板の矯正方法。 A leveling roll unit having a plurality of leveling rolls arranged in a zigzag pattern above and below the plate passing line of the metal plate to be corrected and rotating so that the metal plate is corrected and passed through the metal plate, and the leveling roll A metal plate correction method for correcting a metal plate by a roller leveler provided with a pressing cylinder that presses and pushes the metal plate through the leveling rolls provided on the entry side and the exit side of the metal plate in the unit, respectively.
The metal plate bites between the upper and lower leveling rolls of the leveling roll unit according to the set pushing amount necessary for correcting the metal plate of the input and output side pressing cylinders and the thickness of the metal plate to be corrected. Biting correction that sets the biting limit pushing amount that is the pushing amount of the pushing cylinder on the limit side and the biting correction control distance that is the moving distance of the metal plate tip to be controlled to the biting limit pushing amount Based on the table, when the set pushing amount of the metal plate of the entry-side pressing cylinder is larger than the biting limit pushing amount, the pushing amount of the entry-side pressing cylinder is calculated during the biting correction control distance. The metal is limited to the biting limit pushing amount, and when the tip of the metal plate reaches the biting correction control distance, the pushing amount of the pressing cylinder on the entry side becomes the set pushing amount. How to straighten the board. - 前記噛込補正テーブルは、さらに金属板の先端が前記噛込補正制御距離に達した際に前記入側の押圧シリンダの押込量を前記設定押込量にする際の押圧速度が設定され、前記噛込補正テーブルに基づいて、前記入側の押圧シリンダの押込量が前記噛込限界押込量から前記設定押込量に変更する際の押圧速度を制御する、請求項４に記載の金属板の矯正方法。 In the biting correction table, a pressing speed for setting the pressing amount of the pressing cylinder on the entry side to the set pressing amount when the tip of the metal plate reaches the biting correction control distance is set. The metal plate correction method according to claim 4, wherein the pressing speed when the pressing amount of the entry-side pressing cylinder is changed from the biting limit pressing amount to the set pressing amount is controlled based on an insertion correction table. .
- 前記噛込補正テーブルは、さらに、各板厚区分毎、および鋼種区分毎に、前記入側の押圧シリンダの押込量が前記噛込限界押込量のときに対応する、前記出側の押圧シリンダの対応押込量が設定され、
前記入側の押圧シリンダの金属板の矯正に必要な設定押込量が前記噛込限界押込量よりも大きい場合に、前記噛込補正テーブルに基づいて、噛込補正制御距離の間、前記入側の押圧シリンダの押込量を前記噛込限界押込量に制限するとともに、前記出側の押圧シリンダの押込量を前記対応押込量になるようにし、金属板の先端が前記噛込補正制御距離に達した際に前記入側および出側の押圧シリンダの押込量が前記設定押込量になるようにする、請求項４または請求項５に記載の金属板の矯正方法。
The biting correction table is further provided for each of the sheet-thickness divisions and the steel grade divisions of the outlet-side pressing cylinder corresponding to when the pressing amount of the inlet-side pressing cylinder is the biting limit pressing amount. The corresponding push amount is set,
When the set pushing amount necessary for correcting the metal plate of the pushing cylinder on the entry side is larger than the biting limit pushing amount, the entry side is operated during the bite correction control distance based on the bite correction table. The pushing amount of the pressing cylinder is limited to the biting limit pushing amount, and the pushing amount of the pushing cylinder on the outlet side is set to the corresponding pushing amount so that the tip of the metal plate reaches the biting correction control distance. 6. The method for correcting a metal plate according to claim 4, wherein the pressing amount of the entry side and the exit side pressing cylinders is set to the set pushing amount.
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| CN104226735A (en) * | 2014-07-15 | 2014-12-24 | 海联锯业有限公司 | Roller-type leveler for metal plate |
| CN111633061A (en) * | 2020-06-11 | 2020-09-08 | 含山县大力精密机械有限公司 | Steel plate correction device and method for waste treatment |
| CN117531873A (en) * | 2023-11-30 | 2024-02-09 | 山东大明协好金属科技有限公司 | Roll gap adjusting device of steel plate leveling machine |
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| WO2013035449A1 (en) * | 2011-09-07 | 2013-03-14 | スチールプランテック株式会社 | Roller leveler and metal plate leveling method using same |
| DE102020117682A1 (en) * | 2020-07-03 | 2022-01-05 | Kohler Maschinenbau Gmbh | Straightening machine and method for straightening a metal strip or a flat metal part |
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| JP2001252720A (en) * | 2000-03-09 | 2001-09-18 | Nippon Steel Corp | Roller straightening method and roller straightening equipment |
| JP2003117606A (en) * | 2001-10-09 | 2003-04-23 | Nippon Steel Corp | Straightening method with roller |
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