WO2021205548A1 - Rolling mill, method for manufacturing rolling mill, and method for modifying rolling mill - Google Patents

Rolling mill, method for manufacturing rolling mill, and method for modifying rolling mill Download PDF

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Publication number
WO2021205548A1
WO2021205548A1 PCT/JP2020/015731 JP2020015731W WO2021205548A1 WO 2021205548 A1 WO2021205548 A1 WO 2021205548A1 JP 2020015731 W JP2020015731 W JP 2020015731W WO 2021205548 A1 WO2021205548 A1 WO 2021205548A1
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WIPO (PCT)
Prior art keywords
cylinder
bending
rolling mill
roll
rolling
Prior art date
Application number
PCT/JP2020/015731
Other languages
French (fr)
Japanese (ja)
Inventor
堀井　健治
彰夫 黒田
達則 杉本
佐古　彰
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.)
Filing date
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Application filed by Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ 株式会社 filed Critical Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ 株式会社
Priority to EP20930355.1A priority Critical patent/EP4019156B1/en
Priority to PCT/JP2020/015731 priority patent/WO2021205548A1/en
Priority to CN202080061113.6A priority patent/CN114340811A/en
Publication of WO2021205548A1 publication Critical patent/WO2021205548A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/142—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/02—Roll bending; vertical bending of rolls
    • B21B2269/04—Work roll bending
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/12—Axial shifting the rolls
    • B21B2269/14—Work rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially

Definitions

  • the present invention relates to a rolling mill, a method for manufacturing a rolling mill, and a method for modifying a rolling mill.
  • Patent Document 1 states that fixed guide blocks are the same as roll inserts on both sides of the window of each roll stand. Fixed to the level, the force of the bending cylinder is transmitted to the roll insert, the roll insert is guided so that it can move vertically in the axial direction, and the length of the bending cylinder at the upper and lower piston ends is larger than its width, respectively. It is stated that the vertical axis of the bending cylinder extends in the direction of the axial displacement of the roll.
  • Patent Document 2 states that for each of the two vertically adjustable pressure transfer elements in which the working roll is supported via an insert. Horizontal rolls with upright guide blocks, two bending cylinders each placed between pressure transfer elements and having piston rods acting on the pressure transfer elements, cylinders formed by each other pressure transfer element.
  • the L-shaped pressure transfer element has a longer, vertical, shorter, horizontal rim, and the rim of the pressure transfer element is in a plane parallel to the working roll.
  • the longer rim of the pressure transfer element is attached to the vertical guide of each guide block, accommodating the cylinder of the bending cylinder, its piston rod of each other It is stated that it acts on the shorter rim of the pressure transfer element.
  • the shape of the rolled material can be controlled by the action related to the movement of the roll and the bending force.
  • the rolling mill to do is known.
  • Patent Document 1 an upper case and a lower piston case are arranged, and they are pushed by the piston so that a bending force can be applied to the bearing box.
  • the pendulum support located between the piston, the upper case and the lower piston case is designed so that no moment acts on the piston.
  • Patent Document 2 discloses a structure in which a vertical rim provided inside a bending cylinder and a horizontal rim slide in a vertical guide to exert a bending force on the insert. As a result, the moment generated in the bending device due to the shift of the roll can be received, and the bending force is applied to the substantially center of the bearing.
  • Horizontal backlash (gap) of the roll bearing box may occur during rolling. In order to remove this backlash, it is effective to provide a backlash cylinder that applies a force in the rolling direction to the bearing.
  • the rattling cylinders 1760 can be provided on both sides of the bearing center pressing bending applying device 1740, the rattling cylinders 1760 like the X portion and the Y portion in FIG. 1 can be provided.
  • the pressing portion of the bearing 1790 will come off from the liner portion of the bearing 1790.
  • the present invention provides a rolling mill capable of providing a rattling cylinder without enlarging the apparatus as compared with a conventional apparatus, and a method for manufacturing and modifying such a rolling mill.
  • the present invention includes a plurality of means for solving the above problems.
  • a roll that shifts in the axial direction
  • a bearing box that shifts together with the roll and receives a load from the roll
  • the above In a rolling mill provided with a first cylinder that applies a bending force in the vertical direction to the bearing box to bend the roll, a second cylinder that applies a pressing force in the rolling direction to the bearing box and the first cylinder.
  • a member which is arranged between one cylinder and the bearing box and receives a bending force from the first cylinder is provided, and the first one in the axial direction is provided on either the entry side or the exit side in the rolling direction.
  • One cylinder and the second cylinder are provided, and the first cylinder and the member are provided on the other side of the entry side or the exit side in the rolling direction.
  • FIG. 3 is a view taken along the line AA'in FIG. It is a BB'arrow view of FIG.
  • FIG. 3 is a view taken along the line CC'of FIG.
  • FIG. 9 is a view taken along the line DD'in FIG. It is a top view explaining the details of the work roll part in the rolling mill of Example 3.
  • FIG. 9 is a view taken along the line DD'in FIG. It is a top view explaining the details of the work roll part in the rolling mill of Example 3.
  • Example 1 of the rolling mill of the present invention the method for manufacturing the rolling mill, and the method for modifying the rolling mill will be described with reference to FIGS. 2 to 7.
  • FIG. 2 is a view showing an outline of a rolling mill provided with the rolling mill according to the first embodiment of the present invention
  • FIG. 3 is a front view for explaining an outline of the rolling mill
  • FIG. 5 is a view taken along the line BB'of FIG. 3
  • FIG. 6 is a view taken along the line CC'of FIG. 3
  • FIG. 7 is a plan view illustrating the details of the working roll portion.
  • the rolling equipment 1 is provided with a plurality of rolling mills that hot-roll the rolled material 5 into strips, and the first stand 10 and the second stand 10 and the second stand 10 are provided from the control device 80 and the entrance side of the rolled material 5. It has a stand 20, a third stand 30, a fourth stand 40, a fifth stand 50, a sixth stand 60, and seven stands of the seventh stand 70. Of the first stand 10, the second stand 20, the third stand 30, the fourth stand 40, the fifth stand 50, the sixth stand 60, the seventh stand 70, and the control device 80, the portion that controls each stand. Corresponds to the rolling mill in the present invention.
  • the rolling equipment 1 is not limited to the 7 stands as shown in FIG. 2, and may consist of at least 2 stands or more.
  • the rolling mill of the present invention has the first stand 10, the second stand 20, the third stand 30, and the fourth stand 40 shown in FIG. , 5th stand 50 and 6th stand 60 can be applied to any of the stands.
  • the seventh stand 70 which is the rolling mill of the present embodiment, is a four-stage rolling mill that rolls the rolled material 5, and includes a housing 700, a control device 80, and a hydraulic device (not shown). Have.
  • the housing 700 includes an upper work roll 710 and a lower work roll 711, an upper reinforcement roll 730 and a lower reinforcement roll 731 that are supported by contacting the upper work roll 710 and the lower work roll 711, respectively.
  • a bearing 790 (see FIG. 7) that shifts in the axial direction of the roll together with the upper work roll 710 and receives a load from the roll is on the drive side and It is provided on any of the operation sides, and these bearings 790 are supported by the upper working roll bearing box 712.
  • the lower work roll 711 is also provided with bearings (omitted for convenience of illustration) at the axial end on both the drive side and the operation side, and these bearings are supported by the lower work roll bearing box 713. doing.
  • the upper work roll 710 is configured to be shiftable in the roll axial direction by the shift cylinder 715 as shown in FIG. 4 via the upper work roll bearing box 712 on the operation side.
  • the lower work roll 711 is also configured to be shiftable in the roll axis direction by the shift cylinder 716 as shown in FIG. 4 via the lower work roll bearing box 713 on the operation side.
  • the entry-side fixing member 702 is fixed to the entry-side housing 700 of the rolled material 5.
  • An outlet side fixing member 703 is fixed to the outlet side housing 700 of the rolled material 5 so as to face the inlet side fixing member 702.
  • the upper work roll bending cylinder 740 and the exit side fixing member 703 provided on the entry side fixing member 702 are provided on both the operation side and the drive side.
  • the upper work roll bearing box 712 is supported by the work roll bending cylinder 741 provided in the upper work roll bending cylinder 741, and by appropriately driving these cylinders, a bending force is applied to the bearing of the upper work roll 710 in the vertical direction.
  • the work roll 710 can be bent.
  • the lower work roll bending cylinder 744 provided on the inlet side fixing member 702 and the lower work roll bending cylinder 741 provided on the outlet side fixing member 703 described above are used to perform the lower work roll.
  • the bearing box 713 is supported, and by appropriately driving these cylinders, a bending force is applied to the bearing of the lower work roll 711 in the vertical direction so that the lower work roll 711 can be bent. ..
  • the upper working roll bending cylinder 740 and the working roll bending cylinder 741 apply a bending force to the bearing of the upper working roll 710 that comes into contact with the rolled material 5 on the vertical oil lease side (anti-rolled material side direction).
  • the upper working roll 710 is arranged so as to bend (first cylinder).
  • the lower work roll bending cylinder 744 and the work roll bending cylinder 741 are arranged so as to apply a bending force to the bearing of the lower work roll 711 in contact with the rolled material 5 on the vertical oil lease side to bend the lower work roll 711. (1st cylinder).
  • the upper work roll 710 is attached to the inner side fixing member 702 on the inner side of the rolled material 5 via a liner (not shown) of the upper work roll bearing box 712.
  • the upper working roll bearing box is provided with a take-off cylinder 760 so as to apply a force in the horizontal direction, specifically, a pressing force in the rolling direction (second cylinder).
  • the entry side fixing member 702 is provided with a lower working roll bearing box removing cylinder 762 so as to apply a pressing force to the lower working roll 711 in the rolling direction via the liner of the lower working roll bearing box 713. Yes (second cylinder).
  • a desired force can be applied to the work roll 710 or the like in a direction orthogonal to the roll axis direction.
  • bearings are provided at the axial ends of the upper reinforcing roll 730 on both the drive side and the operation side, and these bearings are supported by the upper reinforcing roll bearing box 732.
  • the lower reinforcing roll 731 is also provided with bearings (not shown) at the axial ends on both the driving side and the operating side, and these bearings are supported by the lower reinforcing roll bearing box 733. ..
  • the housing 700 on the entry side is provided with an upper reinforcing roll bearing box removing cylinder 780 so as to apply a horizontal force to the upper reinforcing roll 730 via the upper reinforcing roll bearing box 732.
  • the housing 700 on the entry side is provided with a lower reinforcing roll bearing box take-off cylinder 782 so as to apply a horizontal force to the lower reinforcing roll 731 via the lower reinforcing roll bearing box 733.
  • the hydraulic system includes the above-mentioned bending cylinders, rattling cylinders, shift cylinders, and reduction cylinders (not shown) that apply a reduction force for rolling the rolled material 5 to the upper work roll 710 and the lower work roll 711. It is connected to a hydraulic cylinder, and this hydraulic device is connected to the control device 80.
  • the control device 80 controls the operation of the hydraulic device and drives and controls each of the above-mentioned bending cylinders and the like by supplying and discharging pressure oil.
  • the lower work roll 711 may also have the same configuration as the upper work roll 710. Since the detailed configuration thereof is substantially the same as that of the upper work roll 710, the description thereof will be omitted.
  • two upper work roll bending cylinders 740 are provided on the entry side of the rolled material 5 in the axial direction of the roll on each of the drive side and the operation side of the upper work roll 710. There is. Further, an upper working roll bearing box removing cylinder 760 is provided between the two upper working roll bending cylinders 740. That is, on the entry side in the rolling direction, the upper working roll bending cylinder 740, the upper working roll bearing box removing cylinder 760, and the upper working roll bending cylinder 740 are provided in this order in the axial direction.
  • the work roll bending cylinder 741 is provided on the exit side of the rolled material 5 on each of the drive side and the operation side of the upper work roll 710.
  • the work roll bending cylinder 741 is arranged so as to be located between two upper work roll bending cylinders 740 provided on the entry side when viewed from the rolling direction, and more preferably, the position in the axial direction is set.
  • the upper working roll bearing box on the entry side of the rolled material 5 is arranged so as to be the same as the take-off cylinder 760.
  • the member 712A is arranged between the working roll bending cylinder 741 and the bearing boxes 712 and 713 on the outlet side of the rolled material 5 and receives the bending force from the working roll bending cylinder 741. , 713A are provided.
  • these members 712A and 713A are configured to shift in the axial direction together with the bearing boxes 712 and 713. Further, it is desirable that the members 712A and 713A are configured so that their axial positions shift between the two bending cylinders 740 when viewed from the entry side or the exit side in the rolling direction.
  • the members 712A and 713A have a portion in which the cross-sectional area in the horizontal direction is larger on the bearing box 712 and 713 side than on the bending cylinder 741 side, as shown in FIG. It is desired that the work roll bending cylinder has a convex shape in which the cross-sectional area on the 741 side is narrow.
  • the members 712A and 713A have a portion in which the length in the axial direction is longer on the bearing box 712 and 713 sides than on the bending cylinder 741 side.
  • the shape of the members 712A and 713A in the rolling direction is not particularly limited, it is shown in FIG. 6 in consideration of the role of effectively transmitting the bending force from the work roll bending cylinder 741 to the bearing boxes 712 and 713. It is desirable that the roll bending cylinder has a convex shape with a narrow cross-sectional area on the 741 side.
  • these members 712A and 713A are not limited to the shapes shown in FIG. 6, and may be various other shapes such as a simple rectangular parallelepiped shape. The same applies to other examples.
  • the axial center position of the bearing 790 supporting the work roll 710 is arranged between the two upper work roll bending cylinders 740, e1 and the upper work roll bending cylinders 740, e2 provided on the entry side.
  • the two upper work roll bending cylinders 740, e1 and the upper work roll bending cylinders 740, e2 provided on the entry side are driven, and the work roll bending provided on the outlet side is performed. Drives the cylinder 741.
  • the difference between the total output of the two upper work roll bending cylinders 740 and e1 and the upper work roll bending cylinders 740 and e2 provided on the inlet side and the output of the work roll bending cylinder 741 provided on the outlet side is calculated. It is desirable to keep it within a predetermined range.
  • the resultant force of the roll bending cylinder acts on the roll axis.
  • the upper work roll bending cylinders 740, e1 and the upper work roll bending cylinders 740, e2 have the same output, and the resultant force of the bending cylinders 740, e1 and the bending cylinders 740, e2 and the bearing center pressing bending on the output side It is desirable that the output of the working roll bending cylinder 741 corresponding to the applying device acts as the total bending force in and out of the bearing box 712 in the vicinity of the roll axis in the pass direction.
  • the upper working roll bearing box backing cylinder 760 is located in the middle of the section Ls and can push substantially the center of the possible position of the center of the bearing 790 that moves at the time of shifting, the upper working roll bearing It is possible to prevent the output of the box bearing cylinder 760 from becoming excessive. That is, since it is possible to prevent the upper work roll bearing box removal cylinder 760 from becoming larger, the upper work roll bearing box removal cylinder 760 can be more easily stored in the entry side fixing member 702. The effect of becoming is obtained.
  • the outputs of the two upper work roll bending cylinders 740 arranged on the entry side are not the same, but can be different values as shown in Table 1 below.
  • the upper work roll bending cylinders 740 and e1 on the outer side in the axial direction are driven by an output obtained by multiplying the bending force Pbe on the entry side by a predetermined coefficient ⁇ e1. Further, the upper work roll bending cylinders 740 and e2 are driven by an output obtained by multiplying the bending force Pbe on the entry side by a predetermined coefficient ⁇ e2. Further, the working roll bending cylinder 741 is driven by the output Pbd.
  • the sum of the bending force Pbe + Pbd on the entry side and the exit side can act on the substantially center of the bearing 790.
  • each mechanism described with reference to FIGS. 3 to 7 above, which constitutes the rolling mill, is prepared.
  • Each mechanism can be appropriately prepared in various ways according to its specifications.
  • a rattling cylinder 760 and a lower work roll bearing box rattling cylinder 762 are provided in the axial direction.
  • the working roll bending cylinder 741 and the members 712A and 713A that receive the bending force from the working roll bending cylinder 741 are placed between the working roll bending cylinder 741 and the bearing box 712 and 713.
  • a working roll that shifts in the axial direction as described in Patent Documents 1 and 2 described above, a bearing box that shifts together with the working roll and receives a load from the working roll, and a bearing box.
  • a bearing center pressing bending applying device bending device
  • Existing rolling mills are not limited to this.
  • the bearing center pressing bending applying device on the side opposite to the side where the new bending device is installed is removed from the rolling mill, and the bearing center pressing bending applying device is installed.
  • a backing bending device having a bending cylinder 740 and a backing cylinder 760 can be attached to the removed place.
  • the parts to be replaced at the time of each of these removals and installations are not limited to the bending device, but the line for supplying pressure oil to each cylinder in the bending device, the entry side fixing member 702 and the exit side fixing member 703 around the bending device.
  • the control device 80, the control program, the control wiring, and other various members can also be modified.
  • the rolling mill of the first embodiment of the present invention described above is arranged between the bending cylinder 741 and the bearing boxes 712 and 713, and includes members 712A and 713A that receive the bending force from the bending cylinder 741 in the rolling direction.
  • Bending cylinders 740, 744 and rattling cylinders 760 are provided on one of the entry and exit sides in the axial direction, and bending cylinders 741 and members 712A and 713A are provided on the other of the entry and exit sides in the rolling direction. It shall be provided.
  • the members 712A and 713A are configured so that at least a part thereof shifts in the axial direction together with the bearing boxes 712 and 713.
  • the members 712A and 713A receive the bending force from the bending cylinder and effectively act on the bearing boxes 712 and 713. Therefore, the positions of the members 712A and 713A are the bearings on which the bending force acts. Affects the position of boxes 712 and 713.
  • the members 712A and 713B shift together with the bearing boxes 712 and 713 that move with the roll shift, the movements of the members 712A and 713B and the bearing boxes 712 and 713 are synchronized with each other, so that the roll shift is affected. It is possible to easily apply the bending force to the desired bearing box 712 and 713 positions. Therefore, it is possible to make it easier for the bending force to act on the center of the bearing 790.
  • the members 712A and 713A have a portion in which the cross-sectional area in the horizontal direction is larger on the bearing box 712 and 713 sides than on the work roll bending cylinder 741 side, so that the bending force due to the bending cylinder is increased. Since it is possible to suppress the local action on the flanges of the bearing boxes 712 and 713, particularly the bearing boxes 712 and 713, the bearing boxes 712 and 713 can be made less likely to be damaged, and the life of the bearing boxes 712 and 713 can be extended. Can be done.
  • the members 712A and 713A have a portion in which the length in the axial direction is longer on the bearing box 712 and 713 side than on the working roll bending cylinder 741 side, so that the bending force is increased in the bearing box. It is possible to suppress local action on the flange portion of 712,713, particularly the bearing box 712,713. Further, when the members 712A and 713A shift together with the bearing boxes 712 and 713, it is necessary to secure a wide area in which the bending force can be applied to the members 712A and 713A, so that the size of the structure around the first cylinder is large. Affects.
  • the length in the axial direction is shortened on the side of the first cylinder, it is possible to suppress the increase in size of the structure around the first cylinder, so that the increase in size of the bending device can be more easily suppressed. You can also get the effect of being able to do it.
  • two bending cylinders 740 and one backing cylinder 760 are provided on either the entry side or the exit side in the rolling direction, particularly on either the entry side or the exit side in the rolling direction.
  • Bending cylinder 740, rattling cylinder 760, and bending cylinder 740 are provided in this order in the axial direction.
  • one bending cylinder in the rolling direction can generate a bending force at least in an axial position from one to the other of the bending cylinders. Therefore, the resultant force of the bending force combined with the other bending cylinder in the rolling direction can be easily applied to the bearing center.
  • a control device 80 for driving the bending cylinders 740 and 741 is further provided, and the control device 80 is arranged between two bending cylinders 740 in which the axial center position of the bearing supporting the work roll 710 is provided on one side. And when the work roll 710 is bent, one bearing 790 is driven by driving any one of the two bending cylinders 740 provided on one side and the bending cylinder 741 provided on the other side. With two bending cylinders, the bending resultant force can be applied near the center of the bearing.
  • control device 80 sets the difference between the total output of at least one bending cylinder 740 provided on one side and the output of the bending cylinder 741 provided on the other side within a predetermined range when the work roll 710 is bent. Therefore, it is possible to apply a bending force substantially equal to the entry side and the exit side of the bearing 790, and it is possible to obtain the effect that the roll can be stably held.
  • FIG. 8 is a plan view illustrating the details of the working roll portion of the rolling mill of the second embodiment.
  • two bending cylinders 740 and one backlash cylinder 760 are provided on the entry side in the rolling direction on the drive side and the operation side of the work roll 710, respectively. It was a form provided.
  • the rolling mill of this embodiment shown in FIG. 8 is provided with one bending cylinder 740 and two backlash cylinders 760 on the entry side.
  • the upper work roll bearing box removal cylinder 760, g2 is arranged.
  • the outputs can be, for example, equal values, but can be different values as described below.
  • a work roll bending cylinder 741 is provided on the exit side of the rolled material 5 on the drive side and the operation side of the upper work roll 710 on the exit side in the rolling direction.
  • the outputs of the two upper working roll bearing boxes arranged on the entry side of the take-off cylinder 760 are not the same, but can be different values as shown in Table 2 below.
  • the upper work roll bending cylinder 740 is driven by the output Pbe, and the work roll bending cylinder 741 is output by the output Pbd.
  • the backlash pressing force Pg2 of the cylinders 760 and g2 is ⁇ 2 ⁇ Pg obtained by multiplying the output Pg by a predetermined coefficient ⁇ 2.
  • the total of the backlash pressing force on the entry side and the exit side can act on the substantially center of the bearing 790.
  • the rolling mill, the method for manufacturing the rolling mill, and the method for modifying the rolling mill according to the second embodiment of the present invention are almost the same as the above-mentioned rolling mill, the method for manufacturing the rolling mill, and the method for modifying the rolling mill. The effect is obtained.
  • FIGS. 9 to 11 A rolling mill according to a third embodiment of the present invention, a method for manufacturing the rolling mill, and a method for modifying the rolling mill will be described with reference to FIGS. 9 to 11.
  • 9 is a front view for explaining the outline of the rolling mill of the third embodiment
  • FIG. 10 is a view corresponding to the DD'arrowing portion in FIG. 9,
  • FIG. 11 is a plan view for explaining the details of the working roll portion. be.
  • the upper work roll bending cylinder 740A provided on the entry side fixing member 702 is provided on the upper side of the rolled material 5.
  • the upper working roll bearing box 712 is supported by the upper working roll bending cylinder 741A provided on the exit side fixing member 703.
  • the vertical positions of the upper work roll bending cylinder 740A and the lower work roll bending cylinder 744A are displaced in the axial direction and are arranged in a staggered manner.
  • the upper working roll bearing box removing cylinder 760 and the lower working roll bearing box removing cylinder 762 have the same vertical position.
  • a member 712B that receives the bending force from the upper work roll bending cylinder 740A is provided between the upper work roll bending cylinder 740A and the bearing box 712, and the lower work roll bending cylinder 744A and the bearing box 713 are provided.
  • a member 713B that receives the bending force from the lower work roll bending cylinder 744A is provided between them.
  • the lower work roll bending cylinder 744A provided on the inlet side fixing member 702 and the lower work roll bending cylinder 745A provided on the outlet side fixing member 703 described above are provided on both the operation side and the drive side. Supports the lower working roll bearing box 713.
  • the vertical positions of the upper work roll bending cylinder 741A and the lower work roll bending cylinder 745A are displaced in the axial direction and are arranged in a staggered manner.
  • a member 712C that receives the bending force from the upper work roll bending cylinder 741A is provided between the upper work roll bending cylinder 741A and the bearing box 712, and the lower work roll bending cylinder 745A and the bearing box 713 are provided with a member 712C.
  • a member 713C that receives the bending force from the lower work roll bending cylinder 745A is provided between them.
  • the bending force can be applied to the substantially center of the bearing 790. Further, at the time of rattling, it is possible to push substantially the center of the center of the bearing 790 that moves when the work roll 710 shifts.
  • the rolling mill, the method for manufacturing the rolling mill, and the method for modifying the rolling mill according to the third embodiment of the present invention are almost the same as the above-mentioned method for manufacturing the rolling mill, the rolling mill, and the method for modifying the rolling mill. The effect is obtained.
  • the rolling mill of the present invention can also be applied to a 6-stage rolling mill, and in this case, the rolling mills come into contact with the working rolls, respectively. It is also possible to adopt the above-mentioned structure for the intermediate roll that is supported by the above.
  • the number of bending cylinders 740 is three or more. can do.
  • the number of rattling cylinders 760 can be two or more.
  • Shift cylinder 730 ... Upper reinforcement roll 731 ... Lower reinforcement roll 732 ... Upper reinforcement roll bearing Box 733 ... Lower reinforcement roll bearing Box 740, 740A ... Upper work roll bending cylinder (first cylinder) 741 ... Work roll bending cylinder (first cylinder) 741A ... Upper work roll bending cylinder (first cylinder) 744,744A ... Lower work roll bending cylinder (first cylinder) 745A ... Lower work roll bending cylinder (first cylinder) 760 ... Upper work roll bearing box rattling cylinder (second cylinder) 762 ... Lower work roll bearing box rattling cylinder (second cylinder) 780 ... Upper reinforcing roll bearing box rattling cylinder 782 ...

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  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

A rolling mill comprises: bending cylinders 740, 741, 744 for applying a bending force in the vertical direction to bearing boxes 712, 713 to bend work rolls 710, 711; a backlash removal cylinder 760 for applying a pressing force in the rolling direction to the bearing boxes 712, 713; and members 712A, 713A for receiving the bending force from the bending cylinder 744, the members 712A, 713A being positioned between the bending cylinder 744 and the bearing boxes 712, 713, the bending cylinders 740, 744 and the backlash removal cylinder 760 being provided in the axial direction on either the entry side or the exit side in the rolling direction, and the bending cylinder 741 and the members 712A, 713A being provided on the other of either the entry side or the exit side in the rolling direction.

Description

圧延機、圧延機の製造方法、および圧延機の改造方法Rolling machine, manufacturing method of rolling mill, and modification method of rolling mill
　本発明は、圧延機、圧延機の製造方法、および圧延機の改造方法に関する。 The present invention relates to a rolling mill, a method for manufacturing a rolling mill, and a method for modifying a rolling mill.
　軸方向に移動可能なロール用の曲げおよび平衡装置を備えるロールスタンド、特に２または４ロールスタンドに関して、特許文献１には、固定ガイドブロックは、各ロールスタンドの窓の両側で、ロールインサートと同じレベルに固定され、曲げシリンダーの力はロールインサートに伝達され、ロールインサートは軸方向に垂直方向に移動可能にガイドされるとともに、上部および下部ピストン端の曲げシリンダーの長さはそれぞれその幅より大きく、曲げシリンダーの縦軸はロールの軸方向変位の方向に延びる、ことが記載されている。 With respect to roll stands with axially movable roll benders and balancers, particularly 2 or 4 roll stands, Patent Document 1 states that fixed guide blocks are the same as roll inserts on both sides of the window of each roll stand. Fixed to the level, the force of the bending cylinder is transmitted to the roll insert, the roll insert is guided so that it can move vertically in the axial direction, and the length of the bending cylinder at the upper and lower piston ends is larger than its width, respectively. It is stated that the vertical axis of the bending cylinder extends in the direction of the axial displacement of the roll.
　また、ロールスタンドの２つの作業ロールの曲げ装置の一例として、特許文献２には、作業ロールがインサートを介して支持されている２つの垂直方向に調整可能な圧力伝達要素のそれぞれに対して、横ロール直立に設けられたガイドブロック、それぞれが圧力伝達要素の間に配置され、圧力伝達要素に作用するピストンロッドを有する２つの曲げシリンダー、それぞれの他の圧力伝達要素によって形成されたシリンダを備えており、有利な設計条件を提供するために、Ｌ字型の圧力伝達要素は、より長く、垂直で、より短い、水平リムを持ち、圧力伝達要素のリムは、作業ロールに平行な平面内で対をなして互いに反対側に配置され、圧力伝達要素の長い方のリムは、それぞれのガイドブロックの垂直ガイドに取り付けられ、曲げシリンダーのシリンダーを収容し、そのピストンロッドは、それぞれの他の圧力伝達要素の短い方のリムに作用する、ことが記載されている。 Further, as an example of a bending device for two working rolls of a roll stand, Patent Document 2 states that for each of the two vertically adjustable pressure transfer elements in which the working roll is supported via an insert. Horizontal rolls with upright guide blocks, two bending cylinders each placed between pressure transfer elements and having piston rods acting on the pressure transfer elements, cylinders formed by each other pressure transfer element. In order to provide favorable design conditions, the L-shaped pressure transfer element has a longer, vertical, shorter, horizontal rim, and the rim of the pressure transfer element is in a plane parallel to the working roll. Paired with each other and placed on opposite sides, the longer rim of the pressure transfer element is attached to the vertical guide of each guide block, accommodating the cylinder of the bending cylinder, its piston rod of each other It is stated that it acts on the shorter rim of the pressure transfer element.
欧州特許第１２９４４９９号明細書European Patent No. 1294499 米国特許第６１６４１１１号明細書U.S. Pat. No. 6,164,111
　圧延ロールをロール軸方向に移動させるシフト機能とロールの軸受に軸直角方向の加圧力を作用させるベンディング機能とを有することで、ロールの移動とベンディング力との関連作用によって圧延材の形状制御を行う圧延機が知られている。 By having a shift function that moves the rolling roll in the roll axis direction and a bending function that applies a pressing force in the direction perpendicular to the axis to the bearing of the roll, the shape of the rolled material can be controlled by the action related to the movement of the roll and the bending force. The rolling mill to do is known.
　このような圧延機では、シフトするロールの位置によって軸受とベンディング用シリンダとの位置が変わる。これにより軸受に偏荷重が作用すると軸受の寿命が短くなる場合がある。特に、シフト量が大きいロールで顕著となる。 In such a rolling mill, the positions of the bearing and the bending cylinder change depending on the position of the shifting roll. As a result, if an unbalanced load acts on the bearing, the life of the bearing may be shortened. This is especially noticeable on rolls with a large shift amount.
　このような軸受に作用する偏荷重を抑制して、軸受の寿命を長期化する技術が知られており、例えば特許文献１，２に記載の技術がある。 A technique for suppressing an eccentric load acting on such a bearing to prolong the life of the bearing is known. For example, there is a technique described in Patent Documents 1 and 2.
　例えば、特許文献１では、上部ケースと下ピストンケースが配置され、それらがピストンによって押され、ベンディング力を軸受箱に作用できる構造になっている。ピストンと上部ケースと下ピストンケースの間に配置された振り子サポートはピストンにモーメントが作用しないように配慮されている。 For example, in Patent Document 1, an upper case and a lower piston case are arranged, and they are pushed by the piston so that a bending force can be applied to the bearing box. The pendulum support located between the piston, the upper case and the lower piston case is designed so that no moment acts on the piston.
　また、特許文献２では、ベンディングシリンダが内部に設けられた鉛直リムと水平リムとが鉛直ガイド内を摺動することでインサートにベンディング力を作用させる構造が開示されている。これにより、ロールのシフトによりベンディング装置に生じるモーメントを受けることができると共に、軸受のほぼ中心にベンディング力を作用させている。 Further, Patent Document 2 discloses a structure in which a vertical rim provided inside a bending cylinder and a horizontal rim slide in a vertical guide to exert a bending force on the insert. As a result, the moment generated in the bending device due to the shift of the roll can be received, and the bending force is applied to the substantially center of the bearing.
　特許文献１，２のいずれも、ロールがシフトしたときに軸受箱内の軸受のほぼ中心にベンディング力が作用するようになっている。ここで、これらの装置について、本明細書中では便宜上『軸受中心押圧ベンディング付与装置』と称する。 In both Patent Documents 1 and 2, when the roll shifts, the bending force acts on the substantially center of the bearing in the bearing box. Here, these devices are referred to as "bearing center pressing bending applying devices" for convenience in the present specification.
　圧延中にロール軸受箱の水平方向のがた（隙間）が生じることがある。このがたを取るために、軸受に圧延方向の力を加えるがた取りシリンダを設けることが効果的である。 Horizontal backlash (gap) of the roll bearing box may occur during rolling. In order to remove this backlash, it is effective to provide a backlash cylinder that applies a force in the rolling direction to the bearing.
　上述の軸受中心押圧ベンディング付与装置は大型であるため、上述の従来技術のベンディング装置の構造では、がた取りシリンダを設けるスペースを確保しにくく、軸受周辺の構造の大型化につながるという課題がある。 Since the above-mentioned bearing center pressing bending device is large, it is difficult to secure a space for providing a backlash cylinder in the structure of the above-mentioned conventional bending device, and there is a problem that the structure around the bearing is increased in size. ..
　例えば、特許文献１に記載の技術では、上部ケースと下ピストンケースは広い空間を必要とするため、ガイドブロックの中にがた取りシリンダを追設するスペースが存在しなかった。 For example, in the technique described in Patent Document 1, since the upper case and the lower piston case require a large space, there is no space for adding a rattling cylinder in the guide block.
　また、特許文献２に記載の技術では、この鉛直リムと水平リムの部材が広い空間を必要とするため、ガイドブロックにがた取りシリンダを設置する空間を確保することは困難であった。 Further, in the technique described in Patent Document 2, since the members of the vertical rim and the horizontal rim require a large space, it is difficult to secure a space for installing the rattling cylinder in the guide block.
　さらに、図１に示すように、軸受中心押圧ベンディング付与装置１７４０の両側にがた取りシリンダ１７６０を設けることができた場合でも、図１中のＸ部やＹ部のようにがた取りシリンダ１７６０の押圧部が軸受１７９０のライナ部から外れてしまうことになる。 Further, as shown in FIG. 1, even when the rattling cylinders 1760 can be provided on both sides of the bearing center pressing bending applying device 1740, the rattling cylinders 1760 like the X portion and the Y portion in FIG. 1 can be provided. The pressing portion of the bearing 1790 will come off from the liner portion of the bearing 1790.
　このような場合においてもがた取りシリンダを導入するためには、ライナを長くする必要があるが、これでは軸受箱１７１２まわりが大型になってしまう、との課題があった。 In such a case, it is necessary to lengthen the liner in order to introduce the rattling cylinder, but there is a problem that the circumference of the bearing box 1712 becomes large.
　本発明は、従来の装置に比べて装置を大型化させることなくがた取りシリンダを設けることが可能な圧延機やそのような圧延機の製造方法、改造方法を提供する。 The present invention provides a rolling mill capable of providing a rattling cylinder without enlarging the apparatus as compared with a conventional apparatus, and a method for manufacturing and modifying such a rolling mill.
　本発明は、上記課題を解決する手段を複数含んでいるが、その一例を挙げるならば、軸方向にシフトするロールと、前記ロールと共にシフトし、前記ロールからの荷重を受ける軸受箱と、前記軸受箱に対して鉛直方向にベンディング力を与えて前記ロールをベンディングさせる第１シリンダと、を備えた圧延機において、前記軸受箱に対して圧延方向の押圧力を与える第２シリンダと、前記第１シリンダと前記軸受箱との間に配置されており、前記第１シリンダからのベンディング力を受ける部材と、を備え、前記圧延方向の入側又は出側の一方に、前記軸方向に前記第１シリンダおよび前記第２シリンダが設けられており、前記圧延方向の入側又は出側の他方に、前記第１シリンダおよび前記部材が設けられていることを特徴とする。 The present invention includes a plurality of means for solving the above problems. For example, a roll that shifts in the axial direction, a bearing box that shifts together with the roll and receives a load from the roll, and the above. In a rolling mill provided with a first cylinder that applies a bending force in the vertical direction to the bearing box to bend the roll, a second cylinder that applies a pressing force in the rolling direction to the bearing box and the first cylinder. A member which is arranged between one cylinder and the bearing box and receives a bending force from the first cylinder is provided, and the first one in the axial direction is provided on either the entry side or the exit side in the rolling direction. One cylinder and the second cylinder are provided, and the first cylinder and the member are provided on the other side of the entry side or the exit side in the rolling direction.
　本発明によれば、従来の装置に比べて装置を大型化させることなくがた取りシリンダを設けることができる。上記した以外の課題、構成および効果は、以下の実施例の説明により明らかにされる。 According to the present invention, it is possible to provide a rattling cylinder without enlarging the device as compared with the conventional device. Issues, configurations and effects other than those mentioned above will be clarified by the description of the following examples.
公知例の圧延機に、がた取りシリンダを適用した場合における作業ロール部分の詳細を説明する平面図である。It is a top view which explains the detail of the work roll part at the time of applying a rattling cylinder to a rolling mill of a known example. 本発明の実施例１の圧延機を備えた圧延設備の概要を示す図である。It is a figure which shows the outline of the rolling equipment which provided the rolling mill of Example 1 of this invention. 実施例１の圧延機の概要を説明する正面図である。It is a front view explaining the outline of the rolling mill of Example 1. FIG. 図３のＡ－Ａ’矢視図である。FIG. 3 is a view taken along the line AA'in FIG. 図３のＢ－Ｂ’矢視図である。It is a BB'arrow view of FIG. 図３のＣ－Ｃ’矢視図である。FIG. 3 is a view taken along the line CC'of FIG. 実施例１の圧延機のうち、作業ロール部分の詳細を説明する平面図である。It is a top view explaining the details of the work roll part in the rolling mill of Example 1. FIG. 本発明の実施例２の圧延機のうち、作業ロール部分の詳細を説明する平面図である。It is a top view explaining the details of the working roll part in the rolling mill of Example 2 of this invention. 本発明の実施例３の圧延機の概要を説明する正面図である。It is a front view explaining the outline of the rolling mill of Example 3 of this invention. 図９におけるＤ－Ｄ’矢視図である。FIG. 9 is a view taken along the line DD'in FIG. 実施例３の圧延機のうち、作業ロール部分の詳細を説明する平面図である。It is a top view explaining the details of the work roll part in the rolling mill of Example 3. FIG.
　以下に本発明の圧延機、圧延機の製造方法、および圧延機の改造方法の実施例を、図面を用いて説明する。なお、本明細書で用いる図面において、同一のまたは対応する構成要素には同一、または類似の符号を付け、これらの構成要素については繰り返しの説明を省略する場合がある。 Hereinafter, examples of the rolling mill of the present invention, the method for manufacturing the rolling mill, and the method for modifying the rolling mill will be described with reference to the drawings. In the drawings used in the present specification, the same or corresponding components may be designated by the same or similar reference numerals, and repeated description of these components may be omitted.
　＜実施例１＞　
　本発明の圧延機、圧延機の製造方法、および圧延機の改造方法の実施例１について図２乃至図７を用いて説明する。図２は本発明の実施例１の圧延機を備えた圧延設備の概要を示す図、図３は圧延機の概要を説明する正面図、図４は図３のＡ－Ａ’矢視図、図５は図３のＢ－Ｂ’矢視図、図６は図３のＣ－Ｃ’矢視図、図７は作業ロール部分の詳細を説明する平面図である。 <Example 1>
Example 1 of the rolling mill of the present invention, the method for manufacturing the rolling mill, and the method for modifying the rolling mill will be described with reference to FIGS. 2 to 7. FIG. 2 is a view showing an outline of a rolling mill provided with the rolling mill according to the first embodiment of the present invention, FIG. 3 is a front view for explaining an outline of the rolling mill, and FIG. 5 is a view taken along the line BB'of FIG. 3, FIG. 6 is a view taken along the line CC'of FIG. 3, and FIG. 7 is a plan view illustrating the details of the working roll portion.
　最初に、本実施例の圧延機を備えた圧延設備の概要について図２を用いて説明する。 First, the outline of the rolling equipment equipped with the rolling mill of this embodiment will be described with reference to FIG.
　図２に示すように、圧延設備１は、圧延材５をストリップに熱間圧延する圧延機を複数備えており、制御装置８０と、圧延材５の入側から、第１スタンド１０、第２スタンド２０、第３スタンド３０、第４スタンド４０、第５スタンド５０、第６スタンド６０、第７スタンド７０の７スタンドと、を有している。このうち第１スタンド１０、第２スタンド２０、第３スタンド３０、第４スタンド４０、第５スタンド５０、第６スタンド６０、第７スタンド７０の各々と制御装置８０のうち各スタンドを制御する部分とが本発明でいう圧延機に相当する。 As shown in FIG. 2, the rolling equipment 1 is provided with a plurality of rolling mills that hot-roll the rolled material 5 into strips, and the first stand 10 and the second stand 10 and the second stand 10 are provided from the control device 80 and the entrance side of the rolled material 5. It has a stand 20, a third stand 30, a fourth stand 40, a fifth stand 50, a sixth stand 60, and seven stands of the seventh stand 70. Of the first stand 10, the second stand 20, the third stand 30, the fourth stand 40, the fifth stand 50, the sixth stand 60, the seventh stand 70, and the control device 80, the portion that controls each stand. Corresponds to the rolling mill in the present invention.
　なお、圧延設備１については、図２に示すような７スタンドに限られず、最低２スタンド以上からなるものとすることができる。 The rolling equipment 1 is not limited to the 7 stands as shown in FIG. 2, and may consist of at least 2 stands or more.
　次に、本発明の圧延機の概要の一部について図３を用いて説明する。なお、図３では図２に示す第７スタンド７０を例に説明するが、本発明の圧延機は、図２に示す第１スタンド１０、第２スタンド２０、第３スタンド３０、第４スタンド４０、第５スタンド５０、第６スタンド６０のうちいずれのスタンドにも適用することができる。 Next, a part of the outline of the rolling mill of the present invention will be described with reference to FIG. Although the seventh stand 70 shown in FIG. 2 will be described as an example in FIG. 3, the rolling mill of the present invention has the first stand 10, the second stand 20, the third stand 30, and the fourth stand 40 shown in FIG. , 5th stand 50 and 6th stand 60 can be applied to any of the stands.
　図３において、本実施例の圧延機である第７スタンド７０は、圧延材５を圧延する４段の圧延機であって、ハウジング７００と、制御装置８０と、油圧装置（図示省略）とを有している。 In FIG. 3, the seventh stand 70, which is the rolling mill of the present embodiment, is a four-stage rolling mill that rolls the rolled material 5, and includes a housing 700, a control device 80, and a hydraulic device (not shown). Have.
　ハウジング７００は、上作業ロール７１０および下作業ロール７１１、これら上作業ロール７１０および下作業ロール７１１にそれぞれ接触することで支持する上補強ロール７３０、下補強ロール７３１を備えている。 The housing 700 includes an upper work roll 710 and a lower work roll 711, an upper reinforcement roll 730 and a lower reinforcement roll 731 that are supported by contacting the upper work roll 710 and the lower work roll 711, respectively.
　これらの各ロールのうち、上作業ロール７１０の軸方向の端部には、上作業ロール７１０と共にロールの軸方向にシフトし、ロールからの荷重を受ける軸受７９０（図７参照）が駆動側および操作側のいずれにも設けられており、これらの軸受７９０を上作業ロール軸受箱７１２により支持している。 Of these rolls, at the axial end of the upper work roll 710, a bearing 790 (see FIG. 7) that shifts in the axial direction of the roll together with the upper work roll 710 and receives a load from the roll is on the drive side and It is provided on any of the operation sides, and these bearings 790 are supported by the upper working roll bearing box 712.
　下作業ロール７１１も、同様に、軸方向の端部に軸受（図示の都合上省略）が駆動側および操作側のいずれにも設けられており、これらの軸受を下作業ロール軸受箱７１３により支持している。 Similarly, the lower work roll 711 is also provided with bearings (omitted for convenience of illustration) at the axial end on both the drive side and the operation side, and these bearings are supported by the lower work roll bearing box 713. doing.
　本実施例では、上作業ロール７１０は、操作側の上作業ロール軸受箱７１２を介して、図４に示すようなシフトシリンダ７１５によりロール軸方向にシフト可能に構成されている。同様に、下作業ロール７１１も、操作側の下作業ロール軸受箱７１３を介して、図４に示すようなシフトシリンダ７１６によりロール軸方向にシフト可能に構成されている。 In this embodiment, the upper work roll 710 is configured to be shiftable in the roll axial direction by the shift cylinder 715 as shown in FIG. 4 via the upper work roll bearing box 712 on the operation side. Similarly, the lower work roll 711 is also configured to be shiftable in the roll axis direction by the shift cylinder 716 as shown in FIG. 4 via the lower work roll bearing box 713 on the operation side.
　図３に戻り、入側固定部材７０２は圧延材５の入側のハウジング７００に固定されている。圧延材５の出側のハウジング７００には、この入側固定部材７０２に対向するように出側固定部材７０３が固定されている。 Returning to FIG. 3, the entry-side fixing member 702 is fixed to the entry-side housing 700 of the rolled material 5. An outlet side fixing member 703 is fixed to the outlet side housing 700 of the rolled material 5 so as to face the inlet side fixing member 702.
　第７スタンド７０では、図３、図５および図６に示すように、操作側および駆動側のいずれにおいても、入側固定部材７０２に設けられた上作業ロールベンディングシリンダ７４０と出側固定部材７０３に設けられた作業ロールベンディングシリンダ７４１とにより上作業ロール軸受箱７１２を支持しており、適宜これらのシリンダを駆動することで上作業ロール７１０の軸受に対して鉛直方向にベンディング力を与えて上作業ロール７１０をベンディングさせることができるようになっている。 In the seventh stand 70, as shown in FIGS. 3, 5 and 6, the upper work roll bending cylinder 740 and the exit side fixing member 703 provided on the entry side fixing member 702 are provided on both the operation side and the drive side. The upper work roll bearing box 712 is supported by the work roll bending cylinder 741 provided in the upper work roll bending cylinder 741, and by appropriately driving these cylinders, a bending force is applied to the bearing of the upper work roll 710 in the vertical direction. The work roll 710 can be bent.
　同様に、操作側および駆動側のいずれにおいても、入側固定部材７０２に設けられた下作業ロールベンディングシリンダ７４４と上述した出側固定部材７０３に設けられた作業ロールベンディングシリンダ７４１とにより下作業ロール軸受箱７１３を支持しており、適宜これらのシリンダを駆動することで下作業ロール７１１の軸受に対して鉛直方向にベンディング力を与えて下作業ロール７１１をベンディングさせることができるようになっている。 Similarly, on both the operation side and the drive side, the lower work roll bending cylinder 744 provided on the inlet side fixing member 702 and the lower work roll bending cylinder 741 provided on the outlet side fixing member 703 described above are used to perform the lower work roll. The bearing box 713 is supported, and by appropriately driving these cylinders, a bending force is applied to the bearing of the lower work roll 711 in the vertical direction so that the lower work roll 711 can be bent. ..
　これらのシリンダのうち、上作業ロールベンディングシリンダ７４０および作業ロールベンディングシリンダ７４１は、圧延材５に接触する上作業ロール７１０の軸受に鉛直方向インクリース側（反圧延材側方向）にベンディング力を与えて上作業ロール７１０をベンディングさせるように配置されている（第１シリンダ）。 Of these cylinders, the upper working roll bending cylinder 740 and the working roll bending cylinder 741 apply a bending force to the bearing of the upper working roll 710 that comes into contact with the rolled material 5 on the vertical oil lease side (anti-rolled material side direction). The upper working roll 710 is arranged so as to bend (first cylinder).
　同様に、下作業ロールベンディングシリンダ７４４や作業ロールベンディングシリンダ７４１は圧延材５に接触する下作業ロール７１１の軸受に鉛直方向インクリース側にベンディング力を与えて下作業ロール７１１をベンディングさせるように配置されている（第１シリンダ）。 Similarly, the lower work roll bending cylinder 744 and the work roll bending cylinder 741 are arranged so as to apply a bending force to the bearing of the lower work roll 711 in contact with the rolled material 5 on the vertical oil lease side to bend the lower work roll 711. (1st cylinder).
　図３および図５に示すように、がた取りを目的として、圧延材５の入側の入側固定部材７０２に、上作業ロール軸受箱７１２のライナ（図示省略）を介して上作業ロール７１０に水平方向の力、具体的には圧延方向に押圧力を加えるように上作業ロール軸受箱がた取りシリンダ７６０が設けられている（第２シリンダ）。 As shown in FIGS. 3 and 5, for the purpose of removing rattling, the upper work roll 710 is attached to the inner side fixing member 702 on the inner side of the rolled material 5 via a liner (not shown) of the upper work roll bearing box 712. The upper working roll bearing box is provided with a take-off cylinder 760 so as to apply a force in the horizontal direction, specifically, a pressing force in the rolling direction (second cylinder).
　同様に、入側固定部材７０２には、下作業ロール軸受箱７１３のライナを介して下作業ロール７１１に圧延方向に押圧力を加えるように下作業ロール軸受箱がた取りシリンダ７６２が設けられている（第２シリンダ）。 Similarly, the entry side fixing member 702 is provided with a lower working roll bearing box removing cylinder 762 so as to apply a pressing force to the lower working roll 711 in the rolling direction via the liner of the lower working roll bearing box 713. Yes (second cylinder).
　これらのシリンダにより、ロール軸方向に対して直交する方向で作業ロール７１０等に所望の力を加えることができる。 With these cylinders, a desired force can be applied to the work roll 710 or the like in a direction orthogonal to the roll axis direction.
　図３に戻り、上補強ロール７３０の軸方向の端部に軸受（図示省略）が駆動側および操作側のいずれにも設けられており、これらの軸受を上補強ロール軸受箱７３２により支持している。下補強ロール７３１も、同様に、軸方向の端部に軸受（図示省略）が駆動側および操作側のいずれにも設けられており、これらの軸受を下補強ロール軸受箱７３３により支持している。 Returning to FIG. 3, bearings (not shown) are provided at the axial ends of the upper reinforcing roll 730 on both the drive side and the operation side, and these bearings are supported by the upper reinforcing roll bearing box 732. There is. Similarly, the lower reinforcing roll 731 is also provided with bearings (not shown) at the axial ends on both the driving side and the operating side, and these bearings are supported by the lower reinforcing roll bearing box 733. ..
　また、図３に示すように、入側のハウジング７００に、上補強ロール軸受箱７３２を介して上補強ロール７３０に水平方向の力を加えるように上補強ロール軸受箱がた取りシリンダ７８０が設けられている。同様に、入側のハウジング７００には、下補強ロール軸受箱７３３を介して下補強ロール７３１に水平方向の力を加えるように下補強ロール軸受箱がた取りシリンダ７８２が設けられている。 Further, as shown in FIG. 3, the housing 700 on the entry side is provided with an upper reinforcing roll bearing box removing cylinder 780 so as to apply a horizontal force to the upper reinforcing roll 730 via the upper reinforcing roll bearing box 732. Has been done. Similarly, the housing 700 on the entry side is provided with a lower reinforcing roll bearing box take-off cylinder 782 so as to apply a horizontal force to the lower reinforcing roll 731 via the lower reinforcing roll bearing box 733.
　油圧装置は、上述した各ベンディングシリンダやがた取りシリンダ、シフトシリンダ、あるいは圧延材５を圧延するための圧下力を上作業ロール７１０および下作業ロール７１１に加える圧下シリンダ（図示省略）等の各油圧シリンダに接続されており、この油圧装置は制御装置８０に接続されている。 The hydraulic system includes the above-mentioned bending cylinders, rattling cylinders, shift cylinders, and reduction cylinders (not shown) that apply a reduction force for rolling the rolled material 5 to the upper work roll 710 and the lower work roll 711. It is connected to a hydraulic cylinder, and this hydraulic device is connected to the control device 80.
　制御装置８０は油圧装置を作動制御して、上述した各ベンディングシリンダ等に圧油を給排することでそれらの各シリンダを駆動制御している。 The control device 80 controls the operation of the hydraulic device and drives and controls each of the above-mentioned bending cylinders and the like by supplying and discharging pressure oil.
　次に、各ロールのうち、上作業ロール７１０に関係する構成について図６を用いて説明する。なお、下作業ロール７１１についても、上作業ロール７１０と同等の構成を有するものとすることができる。その詳細な構成は、上作業ロール７１０のものと略同じであるため、説明は省略する。 Next, among the rolls, the configuration related to the upper work roll 710 will be described with reference to FIG. The lower work roll 711 may also have the same configuration as the upper work roll 710. Since the detailed configuration thereof is substantially the same as that of the upper work roll 710, the description thereof will be omitted.
　図５に示すように、本実施例では、上作業ロール７１０の駆動側と操作側の各々において、圧延材５の入側に上作業ロールベンディングシリンダ７４０がロールの軸方向に２つ設けられている。また、それら２つの上作業ロールベンディングシリンダ７４０の間に上作業ロール軸受箱がた取りシリンダ７６０が設けられている。すなわち、圧延方向の入側には、軸方向に上作業ロールベンディングシリンダ７４０、上作業ロール軸受箱がた取りシリンダ７６０、上作業ロールベンディングシリンダ７４０の順に設けられている。 As shown in FIG. 5, in this embodiment, two upper work roll bending cylinders 740 are provided on the entry side of the rolled material 5 in the axial direction of the roll on each of the drive side and the operation side of the upper work roll 710. There is. Further, an upper working roll bearing box removing cylinder 760 is provided between the two upper working roll bending cylinders 740. That is, on the entry side in the rolling direction, the upper working roll bending cylinder 740, the upper working roll bearing box removing cylinder 760, and the upper working roll bending cylinder 740 are provided in this order in the axial direction.
　これに対し、図６に示すように、本実施例では、上作業ロール７１０の駆動側と操作側の各々において、圧延材５の出側に作業ロールベンディングシリンダ７４１が設けられている。 On the other hand, as shown in FIG. 6, in this embodiment, the work roll bending cylinder 741 is provided on the exit side of the rolled material 5 on each of the drive side and the operation side of the upper work roll 710.
　この作業ロールベンディングシリンダ７４１は、圧延方向から見たときに、入側に設けられた２つの上作業ロールベンディングシリンダ７４０の間に位置するように配置され、より好適には、軸方向の位置が圧延材５の入側の上作業ロール軸受箱がた取りシリンダ７６０と同じになるように配置される。 The work roll bending cylinder 741 is arranged so as to be located between two upper work roll bending cylinders 740 provided on the entry side when viewed from the rolling direction, and more preferably, the position in the axial direction is set. The upper working roll bearing box on the entry side of the rolled material 5 is arranged so as to be the same as the take-off cylinder 760.
　更に、本実施例では、圧延材５の出側には、その作業ロールベンディングシリンダ７４１と軸受箱７１２，７１３との間に配置されており、作業ロールベンディングシリンダ７４１からのベンディング力を受ける部材７１２Ａ，７１３Ａが設けられている。 Further, in this embodiment, the member 712A is arranged between the working roll bending cylinder 741 and the bearing boxes 712 and 713 on the outlet side of the rolled material 5 and receives the bending force from the working roll bending cylinder 741. , 713A are provided.
　これら部材７１２Ａ，７１３Ａは、少なくとも一部、より好適にはその全部が軸受箱７１２，７１３と共に軸方向にシフトするように構成されているものとすることが望ましい。更には、部材７１２Ａ，７１３Ａは、その軸方向の位置が、圧延方向の入側又は出側から見たときに２つのベンディングシリンダ７４０の間をシフトするように構成されていることが望ましい。 It is desirable that at least a part of these members 712A and 713A, more preferably all of them, are configured to shift in the axial direction together with the bearing boxes 712 and 713. Further, it is desirable that the members 712A and 713A are configured so that their axial positions shift between the two bending cylinders 740 when viewed from the entry side or the exit side in the rolling direction.
　部材７１２Ａ，７１３Ａは、その中に水平方向の断面積がベンディングシリンダ７４１側よりも軸受箱７１２，７１３側の方が大きい箇所を有しているものとすることが望ましく、図６に示すように、作業ロールベンディングシリンダ７４１側の断面積が狭くなっている凸形状をしていることが望まれる。 It is desirable that the members 712A and 713A have a portion in which the cross-sectional area in the horizontal direction is larger on the bearing box 712 and 713 side than on the bending cylinder 741 side, as shown in FIG. It is desired that the work roll bending cylinder has a convex shape in which the cross-sectional area on the 741 side is narrow.
　また、部材７１２Ａ，７１３Ａは、その中に軸方向の長さがベンディングシリンダ７４１側よりも軸受箱７１２，７１３側の方が長い箇所を有しているものとすることが望ましい。 Further, it is desirable that the members 712A and 713A have a portion in which the length in the axial direction is longer on the bearing box 712 and 713 sides than on the bending cylinder 741 side.
　なお、部材７１２Ａ，７１３Ａの圧延方向の形状については特に限定されないものの、作業ロールベンディングシリンダ７４１からのベンディング力を軸受箱７１２，７１３に効果的に伝達するという役割を考慮すると、図６に示すような作業ロールベンディングシリンダ７４１側の断面積が狭くなっている凸形状であることが望ましい。 Although the shape of the members 712A and 713A in the rolling direction is not particularly limited, it is shown in FIG. 6 in consideration of the role of effectively transmitting the bending force from the work roll bending cylinder 741 to the bearing boxes 712 and 713. It is desirable that the roll bending cylinder has a convex shape with a narrow cross-sectional area on the 741 side.
　なお、図６に示す形態では、これら部材７１２Ａ，７１３Ａは、それぞれが軸受箱７１２，７１３と別体の場合について説明しているが、これら部材７１２Ａ，７１３Ａに相当する構成を軸受箱７１２，７１３のうち作業ロールベンディングシリンダ７４１との接触箇所に設けて一体化した形態とすることができる。このことは後述する各実施例においても同様である。 In the form shown in FIG. 6, the cases where the members 712A and 713A are separate from the bearing boxes 712A and 713 are described, but the configurations corresponding to these members 712A and 713A are the bearing boxes 712 and 713. Of these, the work roll bending cylinder 741 can be provided at a contact point and integrated. This also applies to each of the examples described later.
　また、これら部材７１２Ａ，７１３Ａの形状も、図６に示すような形態に限られず、単純な直方体形状などの他の様々な形状とすることができる。他の実施例でも同様である。 Further, the shapes of these members 712A and 713A are not limited to the shapes shown in FIG. 6, and may be various other shapes such as a simple rectangular parallelepiped shape. The same applies to other examples.
　次に、本実施例の上作業ロールベンディングシリンダ７４０や作業ロールベンディングシリンダ７４１、上作業ロール軸受箱がた取りシリンダ７６０の駆動制御の詳細について図７や表１等を参照して説明する。これらの駆動制御は、油圧装置を駆動制御する制御装置８０により実行される。 Next, the details of the drive control of the upper work roll bending cylinder 740, the upper work roll bending cylinder 741, and the upper work roll bearing box backing cylinder 760 of this embodiment will be described with reference to FIGS. 7 and 1 and the like. These drive controls are executed by the control device 80 that drives and controls the hydraulic device.
　本実施例では、作業ロール７１０を支持する軸受７９０の軸方向の中心位置が入側に設けられた２つの上作業ロールベンディングシリンダ７４０，ｅ１および上作業ロールベンディングシリンダ７４０，ｅ２の間に配置されており、且つ作業ロール７１０のベンディング時には、入側に設けられた２つの上作業ロールベンディングシリンダ７４０，ｅ１および上作業ロールベンディングシリンダ７４０，ｅ２を駆動するとともに、出側に設けられた作業ロールベンディングシリンダ７４１を駆動する。 In this embodiment, the axial center position of the bearing 790 supporting the work roll 710 is arranged between the two upper work roll bending cylinders 740, e1 and the upper work roll bending cylinders 740, e2 provided on the entry side. At the time of bending the work roll 710, the two upper work roll bending cylinders 740, e1 and the upper work roll bending cylinders 740, e2 provided on the entry side are driven, and the work roll bending provided on the outlet side is performed. Drives the cylinder 741.
　この際、入側に設けられた２つの上作業ロールベンディングシリンダ７４０，ｅ１および上作業ロールベンディングシリンダ７４０，ｅ２の合計出力と、出側に設けられた作業ロールベンディングシリンダ７４１の出力との差を所定範囲内とすることが望ましい。好ましくはロール軸線上にロールベンディングシリンダの合力が作用するようにする。 At this time, the difference between the total output of the two upper work roll bending cylinders 740 and e1 and the upper work roll bending cylinders 740 and e2 provided on the inlet side and the output of the work roll bending cylinder 741 provided on the outlet side is calculated. It is desirable to keep it within a predetermined range. Preferably, the resultant force of the roll bending cylinder acts on the roll axis.
　また、上作業ロールベンディングシリンダ７４０，ｅ１と上作業ロールベンディングシリンダ７４０，ｅ２とは同じ出力であって、それらベンディングシリンダ７４０，ｅ１とベンディングシリンダ７４０，ｅ２の合力と、出側の軸受中心押圧ベンディング付与装置に相当する作業ロールベンディングシリンダ７４１の出力とが、軸受箱７１２に対してパス方向でロール軸線付近に入出のベンディング力の合計として作用するようになっていることが望ましい。 Further, the upper work roll bending cylinders 740, e1 and the upper work roll bending cylinders 740, e2 have the same output, and the resultant force of the bending cylinders 740, e1 and the bending cylinders 740, e2 and the bearing center pressing bending on the output side It is desirable that the output of the working roll bending cylinder 741 corresponding to the applying device acts as the total bending force in and out of the bearing box 712 in the vicinity of the roll axis in the pass direction.
　ここで、軸受箱７１２内の軸受７９０中心が区間Ｌｓの間をシフトする際の上作業ロール７１０のシフト量、すなわち軸受７９０の軸方向中心のシフト量をＬ１（駆動方向側のシフト量をプラスとする）とし、Ｌ１＝Ｌｓ／２とすると、入側と出側のベンディング力の合計が作用する位置を０～Ｌ１／２≦Ｌｓ／４の範囲とすることができるため、軸受７９０の寿命を著しく低下させることを抑制することができる。 Here, the shift amount of the upper working roll 710 when the center of the bearing 790 in the bearing box 712 shifts between the sections Ls, that is, the shift amount of the axial center of the bearing 790 is L1 (the shift amount on the drive direction side is added). If L1 = Ls / 2, the position where the total bending force on the entry side and the exit side acts can be in the range of 0 to L1 / 2≤Ls / 4, and therefore the life of the bearing 790. Can be suppressed from being significantly reduced.
　また、上作業ロール軸受箱がた取りシリンダ７６０は区間Ｌｓの中間に位置して、シフトのときに移動する軸受７９０の中心の取り得る位置のほぼ中心を押すことができるため、上作業ロール軸受箱がた取りシリンダ７６０の出力が過大となることを抑制できる。すなわち、上作業ロール軸受箱がた取りシリンダ７６０が大型化することを抑制できるため、より容易に入側固定部材７０２内に上作業ロール軸受箱がた取りシリンダ７６０を収納することができるようになる、との効果が得られる。 Further, since the upper working roll bearing box backing cylinder 760 is located in the middle of the section Ls and can push substantially the center of the possible position of the center of the bearing 790 that moves at the time of shifting, the upper working roll bearing It is possible to prevent the output of the box bearing cylinder 760 from becoming excessive. That is, since it is possible to prevent the upper work roll bearing box removal cylinder 760 from becoming larger, the upper work roll bearing box removal cylinder 760 can be more easily stored in the entry side fixing member 702. The effect of becoming is obtained.
　また、入側に配置されている２つの上作業ロールベンディングシリンダ７４０の出力を同じではなく、下記表１に示すように、異なる値とすることができる。 Also, the outputs of the two upper work roll bending cylinders 740 arranged on the entry side are not the same, but can be different values as shown in Table 1 below.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　例えば、作業ロールがＬｓの間をシフトする際に、軸方向外側の上作業ロールベンディングシリンダ７４０，ｅ１を、入側のベンディング力Ｐｂｅに所定の係数αｅ１を乗じた出力で駆動する。また、上作業ロールベンディングシリンダ７４０，ｅ２を、入側のベンディング力Ｐｂｅに所定の係数αｅ２を乗じた出力で駆動する。更に、作業ロールベンディングシリンダ７４１を出力Ｐｂｄで駆動する。 For example, when the work roll shifts between Ls, the upper work roll bending cylinders 740 and e1 on the outer side in the axial direction are driven by an output obtained by multiplying the bending force Pbe on the entry side by a predetermined coefficient αe1. Further, the upper work roll bending cylinders 740 and e2 are driven by an output obtained by multiplying the bending force Pbe on the entry side by a predetermined coefficient αe2. Further, the working roll bending cylinder 741 is driven by the output Pbd.
　この際のαｅ１とαｅ２とを、上作業ロールベンディングシリンダ７４０，ｅ１と上作業ロールベンディングシリンダ７４０，ｅ２との合力Ｐｅ１＋Ｐｅ２＝Ｐｂｅが軸受７９０の中心に作用するように選択する。これにより、入側と出側のベンディング力Ｐｂｅ＋Ｐｂｄの合計が軸受７９０のほぼ中心に作用するようにすることができる。 At this time, αe1 and αe2 are selected so that the resultant force Pe1 + Pe2 = Pbe of the upper working roll bending cylinders 740 and e1 and the upper working roll bending cylinders 740 and e2 acts on the center of the bearing 790. Thereby, the sum of the bending force Pbe + Pbd on the entry side and the exit side can act on the substantially center of the bearing 790.
　上作業ロール軸受箱がた取りシリンダ７６０を出力Ｐｇ１で駆動する点は同じである。 The point that the upper work roll bearing box take-off cylinder 760 is driven by the output Pg1 is the same.
　なお、入側に設けられた２つの上作業ロールベンディングシリンダ７４０，ｅ１および上作業ロールベンディングシリンダ７４０，ｅ２を駆動する場合について説明したが、軸受７９０がシフトした位置に合わせて、上作業ロールベンディングシリンダ７４０ｅ１と上作業ロールベンディングシリンダ７４０ｅ２の何れか１つを駆動することができる。これにより、軸受７９０の軸方向中心とベンディング力作用位置のずれが極力小さくなるようにすることもできる。 The case of driving the two upper work roll bending cylinders 740 and e1 and the upper work roll bending cylinders 740 and e2 provided on the entry side has been described, but the upper work roll bending is adjusted to the position where the bearing 790 is shifted. Any one of the cylinder 740e1 and the upper work roll bending cylinder 740e2 can be driven. As a result, the deviation between the axial center of the bearing 790 and the bending force acting position can be minimized.
　次に、本実施例に係る圧延機の製造方法や既存の圧延機の改造方法について説明する。 Next, the manufacturing method of the rolling mill and the modification method of the existing rolling mill according to this embodiment will be described.
　まず、図３乃至図７に示した圧延機の製造方法について簡単に説明する。 First, the manufacturing method of the rolling mill shown in FIGS. 3 to 7 will be briefly described.
　最初に、圧延機を構成する、上記図３乃至図７を用いて説明した各機構を準備する。各機構は、その仕様に応じたものを適宜様々な方法で準備することができる。 First, each mechanism described with reference to FIGS. 3 to 7 above, which constitutes the rolling mill, is prepared. Each mechanism can be appropriately prepared in various ways according to its specifications.
　次いで、準備した各機構を組み立てる。この際、本実施例では、圧延方向の入側に、上作業ロールベンディングシリンダ７４０や下作業ロールベンディングシリンダ７４４、および軸受箱７１２，７１３に対して圧延方向の押圧力を与える上作業ロール軸受箱がた取りシリンダ７６０や下作業ロール軸受箱がた取りシリンダ７６２を軸方向に設ける。これとともに、圧延方向の出側に、作業ロールベンディングシリンダ７４１、およびこの作業ロールベンディングシリンダ７４１と軸受箱７１２，７１３との間に、作業ロールベンディングシリンダ７４１からのベンディング力を受ける部材７１２Ａ，７１３Ａを設ける。 Next, assemble each prepared mechanism. At this time, in this embodiment, the upper work roll bearing box that applies a pressing force in the rolling direction to the upper work roll bending cylinder 740, the lower work roll bending cylinder 744, and the bearing boxes 712 and 713 on the entry side in the rolling direction. A rattling cylinder 760 and a lower work roll bearing box rattling cylinder 762 are provided in the axial direction. At the same time, on the exit side in the rolling direction, the working roll bending cylinder 741 and the members 712A and 713A that receive the bending force from the working roll bending cylinder 741 are placed between the working roll bending cylinder 741 and the bearing box 712 and 713. prepare.
　その後、適宜、調整作業や検査を実施した上で、操業を行うことができるようになる。 After that, it will be possible to carry out operations after performing adjustment work and inspections as appropriate.
　次いで、既存の圧延機を図３乃至図７に示したような圧延機へと改造する方法について説明する。 Next, a method of remodeling an existing rolling mill into a rolling mill as shown in FIGS. 3 to 7 will be described.
　本実施例では、既存の圧延機として、上述の特許文献１，２に記載したような、軸方向にシフトする作業ロールと、作業ロールと共にシフトし、作業ロールからの荷重を受ける軸受箱と、圧延方法の入側および出側に、軸受箱に鉛直方向にベンディング力を与えて作業ロールをベンディングさせる軸受中心押圧ベンディング付与装置（ベンディング装置）を備えている圧延機の場合を例に説明するが、既存の圧延機はこれに限定されるものではない。 In this embodiment, as an existing rolling mill, a working roll that shifts in the axial direction as described in Patent Documents 1 and 2 described above, a bearing box that shifts together with the working roll and receives a load from the working roll, and a bearing box. The case of a rolling mill equipped with a bearing center pressing bending applying device (bending device) that applies a bending force to the bearing box in the vertical direction to bend the work roll on the entry side and the exit side of the rolling method will be described as an example. , Existing rolling mills are not limited to this.
　改造を行う場合は、最初に、圧延方向の入側又は出側のうちいずれか一方の軸受中心押圧ベンディング付与装置を圧延機から取り外す。 When modifying, first remove the bearing center pressing bending applying device from either the entry side or the exit side in the rolling direction from the rolling mill.
　その後、先に軸受中心押圧ベンディング付与装置が取り外された場所に、図３乃至図７に示したような、ベンディングシリンダ７４１、およびベンディングシリンダ７４１と軸受箱７１２，７１３との間に、ベンディングシリンダ７４１からのベンディング力を受ける部材７１２Ａ，７１３Ａを有する新たなベンディング装置、あるいはベンディングシリンダ７４１を有する新たなベンディング装置を取り付ける。 After that, at the place where the bearing center pressing bending applying device was removed first, the bending cylinder 741 and the bending cylinder 741 between the bending cylinder 741 and the bearing box 712 and 713, as shown in FIGS. 3 to 7, the bending cylinder 741 A new bending device having members 712A and 713A that receive the bending force from the above, or a new bending device having a bending cylinder 741 is attached.
　また、新たなベンディング装置の取り付けの前と後のいずれでもよいが、新たなベンディング装置を取り付ける側とは反対側の軸受中心押圧ベンディング付与装置を圧延機から取り外すとともに、軸受中心押圧ベンディング付与装置が取り外された場所に、ベンディングシリンダ７４０、およびがた取りシリンダ７６０を有するがた取りベンディング装置を取り付けることができる。 Further, it may be before or after the installation of the new bending device, but the bearing center pressing bending applying device on the side opposite to the side where the new bending device is installed is removed from the rolling mill, and the bearing center pressing bending applying device is installed. A backing bending device having a bending cylinder 740 and a backing cylinder 760 can be attached to the removed place.
　これらの各取り外し、取り付けの際に交換される部品はベンディング装置だけに限られず、ベンディング装置内の各シリンダに圧油を供給するラインやベンディング装置周りの入側固定部材７０２や出側固定部材７０３、制御装置８０や制御用プログラム、制御用配線等の各種部材についても併せて改造の対象とすることができる。 The parts to be replaced at the time of each of these removals and installations are not limited to the bending device, but the line for supplying pressure oil to each cylinder in the bending device, the entry side fixing member 702 and the exit side fixing member 703 around the bending device. , The control device 80, the control program, the control wiring, and other various members can also be modified.
　次に、本実施例の効果について説明する。 Next, the effect of this embodiment will be described.
　上述した本発明の実施例１の圧延機は、ベンディングシリンダ７４１と軸受箱７１２，７１３との間に配置されており、ベンディングシリンダ７４１からのベンディング力を受ける部材７１２Ａ，７１３Ａを備え、圧延方向の入側又は出側の一方に、軸方向にベンディングシリンダ７４０，７４４およびがた取りシリンダ７６０が設けられており、圧延方向の入側又は出側の他方に、ベンディングシリンダ７４１および部材７１２Ａ，７１３Ａが設けられているものとする。 The rolling mill of the first embodiment of the present invention described above is arranged between the bending cylinder 741 and the bearing boxes 712 and 713, and includes members 712A and 713A that receive the bending force from the bending cylinder 741 in the rolling direction. Bending cylinders 740, 744 and rattling cylinders 760 are provided on one of the entry and exit sides in the axial direction, and bending cylinders 741 and members 712A and 713A are provided on the other of the entry and exit sides in the rolling direction. It shall be provided.
　このような構造によって、軸受中心押圧ベンディング付与装置のような大型化しやすいベンディング装置を備える場合においても、装置の大型化を招くことなく圧延中に生じたロール軸受箱の水平方向のがた（隙間）を解消するがた取りシリンダを設けることができるようになる、との効果が得られる。 Due to such a structure, even when a bending device such as a bearing center pressing bending device is provided, which tends to increase in size, the roll bearing box is loosened in the horizontal direction (gap) generated during rolling without causing the device to be increased in size. ) Can be eliminated, but the effect of being able to provide a bearing cylinder can be obtained.
　また、部材７１２Ａ，７１３Ａは、少なくとも一部が軸受箱７１２，７１３と共に軸方向にシフトするように構成された。上述のように、部材７１２Ａ，７１３Ａはベンディングシリンダからのベンディング力を受け、そのベンディング力を軸受箱７１２，７１３に効果的に作用させることから、部材７１２Ａ，７１３Ａの位置はベンディング力が作用する軸受箱７１２，７１３の位置に影響する。また、ロールシフトに伴って移動する軸受箱７１２，７１３と共に部材７１２Ａ，７１３Ｂがシフトすることによって、部材７１２Ａ，７１３Ｂと軸受箱７１２，７１３との移動が同期するので、ロールシフトに影響されることなくベンディング力を所望の軸受箱７１２，７１３の位置に作用させ易くすることができる。従って、ベンディング力を更に軸受７９０中心に作用させ易くすることができる。 Further, the members 712A and 713A are configured so that at least a part thereof shifts in the axial direction together with the bearing boxes 712 and 713. As described above, the members 712A and 713A receive the bending force from the bending cylinder and effectively act on the bearing boxes 712 and 713. Therefore, the positions of the members 712A and 713A are the bearings on which the bending force acts. Affects the position of boxes 712 and 713. Further, since the members 712A and 713B shift together with the bearing boxes 712 and 713 that move with the roll shift, the movements of the members 712A and 713B and the bearing boxes 712 and 713 are synchronized with each other, so that the roll shift is affected. It is possible to easily apply the bending force to the desired bearing box 712 and 713 positions. Therefore, it is possible to make it easier for the bending force to act on the center of the bearing 790.
　更に、部材７１２Ａ，７１３Ａは、その中に水平方向の断面積が作業ロールベンディングシリンダ７４１側よりも軸受箱７１２，７１３側の方が大きい箇所を有していることで、ベンディングシリンダによるベンディング力が軸受箱７１２，７１３、特に軸受箱７１２，７１３の鍔の部分に局所的に働くことを抑制することができるので、軸受箱７１２，７１３を破損し難くすることができ、長寿命化を図ることができる。 Further, the members 712A and 713A have a portion in which the cross-sectional area in the horizontal direction is larger on the bearing box 712 and 713 sides than on the work roll bending cylinder 741 side, so that the bending force due to the bending cylinder is increased. Since it is possible to suppress the local action on the flanges of the bearing boxes 712 and 713, particularly the bearing boxes 712 and 713, the bearing boxes 712 and 713 can be made less likely to be damaged, and the life of the bearing boxes 712 and 713 can be extended. Can be done.
　また、部材７１２Ａ，７１３Ａは、その中に軸方向の長さが作業ロールベンディングシリンダ７４１側よりも軸受箱７１２，７１３側の方が長い箇所を有していることによっても、ベンディング力が軸受箱７１２，７１３、特に軸受箱７１２，７１３の鍔の部分に局所的に働くことを抑制することができる。また、部材７１２Ａ，７１３Ａが軸受箱７１２，７１３と共にシフトする場合は、部材７１２Ａ，７１３Ａにベンディング力を作用させることができる領域を広く確保する必要があるため、第１シリンダ周辺の構造の大きさに影響する。そのため、軸方向の長さが第１シリンダ側の方で短くなることにより、第１シリンダ周辺の構造の大型化を抑制することができるので、ベンディング装置の大型化をより容易に抑制することができる、との効果も得られる。 Further, the members 712A and 713A have a portion in which the length in the axial direction is longer on the bearing box 712 and 713 side than on the working roll bending cylinder 741 side, so that the bending force is increased in the bearing box. It is possible to suppress local action on the flange portion of 712,713, particularly the bearing box 712,713. Further, when the members 712A and 713A shift together with the bearing boxes 712 and 713, it is necessary to secure a wide area in which the bending force can be applied to the members 712A and 713A, so that the size of the structure around the first cylinder is large. Affects. Therefore, since the length in the axial direction is shortened on the side of the first cylinder, it is possible to suppress the increase in size of the structure around the first cylinder, so that the increase in size of the bending device can be more easily suppressed. You can also get the effect of being able to do it.
　更に、圧延方向の入側又は出側のいずれかに、２つのベンディングシリンダ７４０と１つのがた取りシリンダ７６０が設けられている、特には圧延方向の入側又は出側のいずれかに一方に、軸方向にベンディングシリンダ７４０、がた取りシリンダ７６０、ベンディングシリンダ７４０の順に設けられており、部材７１２Ａ，７１３Ａは、その軸方向の位置が、圧延方向の入側又は出側から見たときに２つのベンディングシリンダ７４０の間をシフトするように構成されたことで、圧延方向の一方のベンディングシリンダが、少なくともベンディングシリンダの一方から他方までの軸方向の位置においてベンディング力を生じさせることができる。したがって、圧延方向の他方のベンディングシリンダと併せたベンディング力の合力を軸受中心により作用させ易くすることができる。また、がた取りシリンダが適切な押圧力を作用させることができる軸方向の範囲と軸受中心のシフト範囲とがほぼ同じになるので、必要以上に出力の大きいがた取りシリンダを用いる必要がなく、装置の大型化を更に容易に抑制することができる。 Further, two bending cylinders 740 and one backing cylinder 760 are provided on either the entry side or the exit side in the rolling direction, particularly on either the entry side or the exit side in the rolling direction. , Bending cylinder 740, rattling cylinder 760, and bending cylinder 740 are provided in this order in the axial direction. By being configured to shift between the two bending cylinders 740, one bending cylinder in the rolling direction can generate a bending force at least in an axial position from one to the other of the bending cylinders. Therefore, the resultant force of the bending force combined with the other bending cylinder in the rolling direction can be easily applied to the bearing center. In addition, since the axial range in which the rattling cylinder can apply an appropriate pressing force and the shift range of the bearing center are almost the same, it is not necessary to use a rattling cylinder having an unnecessarily large output. , The increase in size of the device can be suppressed more easily.
　また、ベンディングシリンダ７４０，７４１を駆動する制御装置８０を更に備え、制御装置８０は、作業ロール７１０を支持する軸受の軸方向の中心位置が一方に設けられた２つのベンディングシリンダ７４０の間に配置されており、且つ作業ロール７１０のベンディング時に、一方に設けられた２つのベンディングシリンダ７４０の何れか１つを駆動するとともに、他方に設けられたベンディングシリンダ７４１を駆動することにより、１つの軸受７９０につきベンディングシリンダ２つで、ベンディング合力を軸受中心近傍に作用させることができる。 Further, a control device 80 for driving the bending cylinders 740 and 741 is further provided, and the control device 80 is arranged between two bending cylinders 740 in which the axial center position of the bearing supporting the work roll 710 is provided on one side. And when the work roll 710 is bent, one bearing 790 is driven by driving any one of the two bending cylinders 740 provided on one side and the bending cylinder 741 provided on the other side. With two bending cylinders, the bending resultant force can be applied near the center of the bearing.
　更に、制御装置８０は、作業ロール７１０のベンディング時に、一方に設けられた少なくとも１つのベンディングシリンダ７４０の合計出力と、他方に設けられたベンディングシリンダ７４１の出力との差を所定範囲内とすることで、軸受７９０の入側と出側にほぼ等しいベンディング力を作用させることができ、ロールを安定して保持できる、との効果が得られる。 Further, the control device 80 sets the difference between the total output of at least one bending cylinder 740 provided on one side and the output of the bending cylinder 741 provided on the other side within a predetermined range when the work roll 710 is bent. Therefore, it is possible to apply a bending force substantially equal to the entry side and the exit side of the bearing 790, and it is possible to obtain the effect that the roll can be stably held.
　＜実施例２＞　
　本発明の実施例２の圧延機、圧延機の製造方法、および圧延機の改造方法について図８を用いて説明する。図８は本実施例２の圧延機のうち、作業ロール部分の詳細を説明する平面図である。 <Example 2>
A rolling mill according to a second embodiment of the present invention, a method for manufacturing the rolling mill, and a method for modifying the rolling mill will be described with reference to FIG. FIG. 8 is a plan view illustrating the details of the working roll portion of the rolling mill of the second embodiment.
　図３乃至図７で説明した実施例１の圧延機は、作業ロール７１０の駆動側と操作側の各々において、圧延方向の入側に、２つのベンディングシリンダ７４０と１つのがた取りシリンダ７６０が設けられている形態であった。これに対し、図８に示す本実施例の圧延機は、入側に１つのベンディングシリンダ７４０と２つのがた取りシリンダ７６０が設けられている。 In the rolling mill of the first embodiment described with reference to FIGS. 3 to 7, two bending cylinders 740 and one backlash cylinder 760 are provided on the entry side in the rolling direction on the drive side and the operation side of the work roll 710, respectively. It was a form provided. On the other hand, the rolling mill of this embodiment shown in FIG. 8 is provided with one bending cylinder 740 and two backlash cylinders 760 on the entry side.
　上作業ロール７１０部分を例に説明すると、特には、上作業ロールベンディングシリンダ７４０は、Ｌ１＝Ｌｓ／２の位置に配置されており、その両側に上作業ロール軸受箱がた取りシリンダ７６０，ｇ１と上作業ロール軸受箱がた取りシリンダ７６０，ｇ２が配置される。その出力は例えば等しい値とすることができるが、後述するように異なる値とすることができる。 Taking the upper work roll 710 portion as an example, in particular, the upper work roll bending cylinder 740 is arranged at the position of L1 = Ls / 2, and the upper work roll bearing box is removed on both sides of the cylinder 760, g1. And the upper work roll bearing box removal cylinder 760, g2 is arranged. The outputs can be, for example, equal values, but can be different values as described below.
　圧延方向の出側は、実施例１と同様に、上作業ロール７１０の駆動側と操作側の各々において、圧延材５の出側には、作業ロールベンディングシリンダ７４１が設けられている。 Similar to the first embodiment, a work roll bending cylinder 741 is provided on the exit side of the rolled material 5 on the drive side and the operation side of the upper work roll 710 on the exit side in the rolling direction.
　軸受箱７１２，７１３内の軸受７９０の中心が区間Ｌｓの間をシフトするとき、Ｌ１＝Ｌｓ／２とすると、入出のベンディング力の合計が作用する位置を０～Ｌ１／２＝Ｌｓ／４とすることができ、軸受７９０の中心からＬｓ／４以内にベンディング力を作用できるので、軸受寿命を著しく低下させることはない。 When the center of the bearing 790 in the bearing box 712,713 shifts between the sections Ls, if L1 = Ls / 2, the position where the total bending force of input and output acts is 0 to L1 / 2 = Ls / 4. Since the bending force can be applied within Ls / 4 from the center of the bearing 790, the bearing life is not significantly shortened.
　また、入側に配置されている２つの上作業ロール軸受箱がた取りシリンダ７６０の出力を同じではなく、下記表２に示すように、異なる値とすることができる。 Further, the outputs of the two upper working roll bearing boxes arranged on the entry side of the take-off cylinder 760 are not the same, but can be different values as shown in Table 2 below.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
　例えば、作業ロールがＬｓの間をシフトする際に、上作業ロールベンディングシリンダ７４０については出力Ｐｂｅで駆動し、作業ロールベンディングシリンダ７４１については出力Ｐｂｄで出力する。 For example, when the work roll shifts between Ls, the upper work roll bending cylinder 740 is driven by the output Pbe, and the work roll bending cylinder 741 is output by the output Pbd.
　この際、軸方向外側の上作業ロール軸受箱がた取りシリンダ７６０，ｇ１のがた取り押付け力Ｐｇ１を出力Ｐｇに所定の係数γ１を乗じたγ１×Ｐｇとして、上作業ロール軸受箱がた取りシリンダ７６０，ｇ２のがた取り押付け力Ｐｇ２を出力Ｐｇに所定の係数γ２を乗じたγ２×Ｐｇとする。 At this time, the upper working roll bearing box is removed by removing the upper working roll bearing box on the outer side in the axial direction. The backlash pressing force Pg2 of the cylinders 760 and g2 is γ2 × Pg obtained by multiplying the output Pg by a predetermined coefficient γ2.
　この際のγ１とγ２とを、上作業ロール軸受箱がた取りシリンダ７６０，ｇ１と上作業ロール軸受箱がた取りシリンダ７６０，ｇ２との合力Ｐｇ１＋Ｐｇ２＝Ｐｇが軸受７９０の中心に作用するように選択する。これにより、入側と出側のがた取り押付け力の合計が軸受７９０のほぼ中心に作用するようにすることができる。 At this time, γ1 and γ2 are arranged so that the resultant force Pg1 + Pg2 = Pg of the upper working roll bearing box removing cylinder 760, g1 and the upper working roll bearing box removing cylinder 760, g2 acts on the center of the bearing 790. select. As a result, the total of the backlash pressing force on the entry side and the exit side can act on the substantially center of the bearing 790.
　その他の構成・動作は前述した実施例１の圧延機、圧延機の製造方法、および圧延機の改造方法と略同じ構成・動作であり、詳細は省略する。 Other configurations and operations are substantially the same as those of the rolling mill in Example 1, the method for manufacturing the rolling mill, and the method for modifying the rolling mill, and details are omitted.
　本発明の実施例２の圧延機、圧延機の製造方法、および圧延機の改造方法においても、前述した実施例１の圧延機、圧延機の製造方法、および圧延機の改造方法とほぼ同様な効果が得られる。 The rolling mill, the method for manufacturing the rolling mill, and the method for modifying the rolling mill according to the second embodiment of the present invention are almost the same as the above-mentioned rolling mill, the method for manufacturing the rolling mill, and the method for modifying the rolling mill. The effect is obtained.
　＜実施例３＞　
　本発明の実施例３の圧延機、圧延機の製造方法、および圧延機の改造方法について図９乃至図１１を用いて説明する。図９は本実施例３の圧延機の概要を説明する正面図、図１０は図９におけるＤ－Ｄ’矢視部分に相当する図、図１１は作業ロール部分の詳細を説明する平面図である。 <Example 3>
A rolling mill according to a third embodiment of the present invention, a method for manufacturing the rolling mill, and a method for modifying the rolling mill will be described with reference to FIGS. 9 to 11. 9 is a front view for explaining the outline of the rolling mill of the third embodiment, FIG. 10 is a view corresponding to the DD'arrowing portion in FIG. 9, and FIG. 11 is a plan view for explaining the details of the working roll portion. be.
　図９および図１０に示すように、本実施例の圧延機では、圧延材５の上側では、操作側および駆動側のいずれにおいても、入側固定部材７０２に設けられた上作業ロールベンディングシリンダ７４０Ａと、出側固定部材７０３に設けられた上作業ロールベンディングシリンダ７４１Ａと、によって上作業ロール軸受箱７１２を支持する。 As shown in FIGS. 9 and 10, in the rolling mill of the present embodiment, on the upper side of the rolled material 5, both the operation side and the drive side, the upper work roll bending cylinder 740A provided on the entry side fixing member 702 is provided. The upper working roll bearing box 712 is supported by the upper working roll bending cylinder 741A provided on the exit side fixing member 703.
　このうち、圧延方向の入側では、上作業ロールベンディングシリンダ７４０Ａと下作業ロールベンディングシリンダ７４４Ａとの鉛直方向の位置が軸方向にずれており、千鳥配置されている。上作業ロール軸受箱がた取りシリンダ７６０と下作業ロール軸受箱がた取りシリンダ７６２とは鉛直方向位置は同じである。 Of these, on the entry side in the rolling direction, the vertical positions of the upper work roll bending cylinder 740A and the lower work roll bending cylinder 744A are displaced in the axial direction and are arranged in a staggered manner. The upper working roll bearing box removing cylinder 760 and the lower working roll bearing box removing cylinder 762 have the same vertical position.
　また、上作業ロールベンディングシリンダ７４０Ａと軸受箱７１２との間には、上作業ロールベンディングシリンダ７４０Ａからのベンディング力を受ける部材７１２Ｂが設けられており、下作業ロールベンディングシリンダ７４４Ａと軸受箱７１３との間には、下作業ロールベンディングシリンダ７４４Ａからのベンディング力を受ける部材７１３Ｂが設けられている。 Further, a member 712B that receives the bending force from the upper work roll bending cylinder 740A is provided between the upper work roll bending cylinder 740A and the bearing box 712, and the lower work roll bending cylinder 744A and the bearing box 713 are provided. A member 713B that receives the bending force from the lower work roll bending cylinder 744A is provided between them.
　下側では、操作側および駆動側のいずれにおいても、入側固定部材７０２に設けられた下作業ロールベンディングシリンダ７４４Ａと、上述した出側固定部材７０３に設けられた下作業ロールベンディングシリンダ７４５Ａと、により下作業ロール軸受箱７１３を支持する。 On the lower side, the lower work roll bending cylinder 744A provided on the inlet side fixing member 702 and the lower work roll bending cylinder 745A provided on the outlet side fixing member 703 described above are provided on both the operation side and the drive side. Supports the lower working roll bearing box 713.
　そして、上作業ロールベンディングシリンダ７４１Ａと下作業ロールベンディングシリンダ７４５Ａとの鉛直方向の位置が軸方向にずれており、千鳥配置されている。 Then, the vertical positions of the upper work roll bending cylinder 741A and the lower work roll bending cylinder 745A are displaced in the axial direction and are arranged in a staggered manner.
　また、上作業ロールベンディングシリンダ７４１Ａと軸受箱７１２との間には、上作業ロールベンディングシリンダ７４１Ａからのベンディング力を受ける部材７１２Ｃが設けられており、下作業ロールベンディングシリンダ７４５Ａと軸受箱７１３との間には、下作業ロールベンディングシリンダ７４５Ａからのベンディング力を受ける部材７１３Ｃが設けられている。 Further, a member 712C that receives the bending force from the upper work roll bending cylinder 741A is provided between the upper work roll bending cylinder 741A and the bearing box 712, and the lower work roll bending cylinder 745A and the bearing box 713 are provided with a member 712C. A member 713C that receives the bending force from the lower work roll bending cylinder 745A is provided between them.
　このような構造においても、ベンディング力を軸受７９０のほぼ中心に作用させることができる。また、がた取りの際にも、作業ロール７１０がシフトするときに移動する軸受７９０の中心の取り得る位置のほぼ中心を押すことができる。 Even in such a structure, the bending force can be applied to the substantially center of the bearing 790. Further, at the time of rattling, it is possible to push substantially the center of the center of the bearing 790 that moves when the work roll 710 shifts.
　その他の構成・動作は前述した実施例１の圧延機、圧延機の製造方法、および圧延機の改造方法と略同じ構成・動作であり、詳細は省略する。 Other configurations and operations are substantially the same as those of the rolling mill in Example 1, the method for manufacturing the rolling mill, and the method for modifying the rolling mill, and details are omitted.
　本発明の実施例３の圧延機、圧延機の製造方法、および圧延機の改造方法においても、前述した実施例１の圧延機、圧延機の製造方法、および圧延機の改造方法とほぼ同様な効果が得られる。 The rolling mill, the method for manufacturing the rolling mill, and the method for modifying the rolling mill according to the third embodiment of the present invention are almost the same as the above-mentioned method for manufacturing the rolling mill, the rolling mill, and the method for modifying the rolling mill. The effect is obtained.
　＜その他＞　
　なお、本発明は、上記の実施例に限定されるものではなく、様々な変形例が含まれる。上記の実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。 <Others>
The present invention is not limited to the above examples, and includes various modifications. The above-mentioned examples have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations.
　また、ある実施例の構成の一部を他の実施例の構成に置き換えることも可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることも可能である。 It is also possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. It is also possible to add / delete / replace a part of the configuration of each embodiment with another configuration.
　例えば、上記各実施例では、対象のロールが作業ロール７１０，７１１の場合について述べたが、本発明の圧延機は６段圧延機にも適用することができ、この場合、作業ロールにそれぞれ接触することで支持する中間ロールにも上述の構造を採用することも可能である。 For example, in each of the above embodiments, the case where the target rolls are the working rolls 710 and 711 has been described, but the rolling mill of the present invention can also be applied to a 6-stage rolling mill, and in this case, the rolling mills come into contact with the working rolls, respectively. It is also possible to adopt the above-mentioned structure for the intermediate roll that is supported by the above.
　また、実施例１では、圧延方向の入側において、操作側と駆動側のいずれにおいても、上作業ロールベンディングシリンダ７４０が２本設けられている場合を説明したが、ベンディングシリンダは３本以上とすることができる。また、がた取りシリンダ７６０についても２本以上とすることが可能である。 Further, in the first embodiment, the case where two upper work roll bending cylinders 740 are provided on both the operation side and the drive side on the entry side in the rolling direction has been described, but the number of bending cylinders is three or more. can do. Further, the number of rattling cylinders 760 can be two or more.
　同様に、実施例２や実施例３においても、操作側と駆動側のいずれにおいても、ベンディングシリンダ７４０やがた取りシリンダ７６０の本数を増やすことも可能である。 Similarly, in the second and third embodiments, it is possible to increase the number of bending cylinders 740 and rattling cylinders 760 on both the operation side and the drive side.
１…圧延設備
５…圧延材
１０…第１スタンド（圧延機）
２０…第２スタンド（圧延機）
３０…第３スタンド（圧延機）
４０…第４スタンド（圧延機）
５０…第５スタンド（圧延機）
６０…第６スタンド（圧延機）
７０…第７スタンド（圧延機）
８０…制御装置
７００…ハウジング
７０２…入側固定部材
７０３…出側固定部材
７１０…上作業ロール（ロール）
７１１…下作業ロール（ロール）
７１２…上作業ロール軸受箱
７１２Ａ，７１２Ｂ，７１３Ｃ…部材
７１３…下作業ロール軸受箱
７１３Ａ，７１３Ｂ，７１３Ｃ…部材
７１５，７１６…シフトシリンダ
７３０…上補強ロール
７３１…下補強ロール
７３２…上補強ロール軸受箱
７３３…下補強ロール軸受箱
７４０，７４０Ａ…上作業ロールベンディングシリンダ（第１シリンダ）
７４１…作業ロールベンディングシリンダ（第１シリンダ）
７４１Ａ…上作業ロールベンディングシリンダ（第１シリンダ）
７４４，７４４Ａ…下作業ロールベンディングシリンダ（第１シリンダ）
７４５Ａ…下作業ロールベンディングシリンダ（第１シリンダ）
７６０…上作業ロール軸受箱がた取りシリンダ（第２シリンダ）
７６２…下作業ロール軸受箱がた取りシリンダ（第２シリンダ）
７８０…上補強ロール軸受箱がた取りシリンダ
７８２…下補強ロール軸受箱がた取りシリンダ
７９０…軸受
１７１２…上作業ロール軸受箱
１７１５…シフトシリンダ
１７４０，１７４１…軸受中心押圧ベンディング付与装置
１７９０…軸受
１７６０…上作業ロール軸受箱がた取りシリンダ 1 ... Rolling equipment 5 ... Rolled material 10 ... 1st stand (rolling machine)
20 ... 2nd stand (rolling machine)
30 ... 3rd stand (rolling machine)
40 ... 4th stand (rolling machine)
50 ... 5th stand (rolling machine)
60 ... 6th stand (rolling machine)
70 ... 7th stand (rolling machine)
80 ... Control device 700 ... Housing 702 ... Enter side fixing member 703 ... Outer side fixing member 710 ... Upper work roll (roll)
711 ... Lower work roll (roll)
712 ... Upper work roll bearing box 712A, 712B, 713C ... Member 713 ... Lower work roll bearing box 713A, 713B, 713C ... Member 715,716 ... Shift cylinder 730 ... Upper reinforcement roll 731 ... Lower reinforcement roll 732 ... Upper reinforcement roll bearing Box 733 ... Lower reinforcement roll bearing Box 740, 740A ... Upper work roll bending cylinder (first cylinder)
741 ... Work roll bending cylinder (first cylinder)
741A ... Upper work roll bending cylinder (first cylinder)
744,744A ... Lower work roll bending cylinder (first cylinder)
745A ... Lower work roll bending cylinder (first cylinder)
760 ... Upper work roll bearing box rattling cylinder (second cylinder)
762 ... Lower work roll bearing box rattling cylinder (second cylinder)
780 ... Upper reinforcing roll bearing box rattling cylinder 782 ... Lower reinforcing roll bearing box rattling cylinder 790 ... Bearing 1712 ... Upper working roll bearing box 1715 ... Shift cylinder 1740, 1741 ... Bearing center pressing bending applying device 1790 ... Bearing 1760 … Upper work roll bearing box rattling cylinder

Claims (10)

  1. 　軸方向にシフトするロールと、
    　前記ロールと共にシフトし、前記ロールからの荷重を受ける軸受箱と、
    　前記軸受箱に対して鉛直方向にベンディング力を与えて前記ロールをベンディングさせる第１シリンダと、を備えた圧延機において、
    　前記軸受箱に対して圧延方向の押圧力を与える第２シリンダと、
    　前記第１シリンダと前記軸受箱との間に配置されており、前記第１シリンダからのベンディング力を受ける部材と、を備え、
    　前記圧延方向の入側又は出側の一方に、前記軸方向に前記第１シリンダおよび前記第２シリンダが設けられており、
    　前記圧延方向の入側又は出側の他方に、前記第１シリンダおよび前記部材が設けられている
    　ことを特徴とする圧延機。     A roll that shifts in the axial direction and
    A bearing box that shifts with the roll and receives the load from the roll,
    In a rolling mill provided with a first cylinder for bending the roll by applying a bending force in the vertical direction to the bearing box.
    A second cylinder that applies a pressing force in the rolling direction to the bearing box,
    A member arranged between the first cylinder and the bearing box and receiving a bending force from the first cylinder is provided.
    The first cylinder and the second cylinder are provided in the axial direction on either the entry side or the exit side in the rolling direction.
    A rolling mill characterized in that the first cylinder and the member are provided on either the entry side or the exit side in the rolling direction.
  2. 　請求項１に記載の圧延機において、
    　前記部材は、少なくとも一部が前記軸受箱と共に前記軸方向にシフトするように構成された
    　ことを特徴とする圧延機。     In the rolling mill according to claim 1,
    A rolling mill characterized in that at least a part of the member is configured to shift in the axial direction together with the bearing box.
  3. 　請求項１または２に記載の圧延機において、
    　前記部材は、その中に水平方向の断面積が前記第１シリンダ側よりも前記軸受箱側の方が大きい箇所を有している
    　ことを特徴とする圧延機。     In the rolling mill according to claim 1 or 2.
    The rolling mill is characterized in that the member has a portion in which the cross-sectional area in the horizontal direction is larger on the bearing box side than on the first cylinder side.
  4. 　請求項１乃至３のいずれか１項に記載の圧延機において、
    　前記部材は、その中に前記軸方向の長さが前記第１シリンダ側よりも前記軸受箱側の方が長い箇所を有している
    　ことを特徴とする圧延機。     In the rolling mill according to any one of claims 1 to 3.
    The rolling mill is characterized in that the member has a portion in which the length in the axial direction is longer on the bearing box side than on the first cylinder side.
  5. 　請求項１乃至４のいずれか１項に記載の圧延機において、
    　前記圧延方向の入側又は出側のいずれかに、２つの前記第１シリンダと１つの前記第２シリンダ、あるいは１つの第１シリンダと２つの前記第２シリンダが設けられている
    　ことを特徴とする圧延機。     In the rolling mill according to any one of claims 1 to 4.
    It is characterized in that two said first cylinders and one said second cylinder, or one first cylinder and two said second cylinders are provided on either the entry side or the exit side in the rolling direction. Rolling machine.
  6. 　請求項５に記載の圧延機において、
    　前記圧延方向の入側又は出側のいずれかに一方に、前記軸方向に前記第１シリンダ、前記第２シリンダ、前記第１シリンダの順に設けられており、
    　前記部材は、その軸方向の位置が、前記圧延方向の入側又は出側から見たときに２つの前記第１シリンダの間をシフトするように構成された
    　ことを特徴とする圧延機。     In the rolling mill according to claim 5.
    The first cylinder, the second cylinder, and the first cylinder are provided in this order in the axial direction on either the entry side or the exit side in the rolling direction.
    The rolling mill is characterized in that its axial position is configured to shift between the two first cylinders when viewed from the entry or exit side of the rolling direction.
  7. 　請求項５に記載の圧延機において、
    　前記第１シリンダを駆動する制御装置を更に備え、
    　前記制御装置は、前記ロールを支持する軸受の軸方向の中心位置が前記一方に設けられた２つの前記第１シリンダの間に配置されており、且つ前記ロールのベンディング時に、前記一方に設けられた２つの前記第１シリンダの何れか１つを駆動するとともに、前記他方に設けられた前記第１シリンダを駆動する
    　ことを特徴とする圧延機。     In the rolling mill according to claim 5.
    A control device for driving the first cylinder is further provided.
    The control device is arranged so that the axial center position of the bearing supporting the roll is between the two first cylinders provided on the one side, and is provided on the one side when the roll is bent. A rolling mill characterized by driving any one of the two first cylinders and driving the first cylinder provided on the other side.
  8. 　請求項１に記載の圧延機において、
    　前記第１シリンダを駆動する制御装置を更に備え、
    　前記制御装置は、前記ロールのベンディング時に、前記一方に設けられた少なくとも１つの前記第１シリンダの合計出力と、前記他方に設けられた前記第１シリンダの出力との差を所定範囲内とする
    　ことを特徴とする圧延機。     In the rolling mill according to claim 1,
    A control device for driving the first cylinder is further provided.
    When the roll is bent, the control device sets the difference between the total output of at least one of the first cylinders provided on the one side and the output of the first cylinder provided on the other side within a predetermined range. A rolling mill characterized by that.
  9. 　軸方向にシフトするロールと、
    　前記ロールと共にシフトし、前記ロールからの荷重を受ける軸受箱と、
    　前記軸受箱に対して鉛直方向にベンディング力を与えて前記ロールをベンディングさせる第１シリンダと、を備えた圧延機の製造方法であって、
    　圧延方向の入側又は出側の一方に、前記第１シリンダ、および前記軸受箱に対して前記圧延方向の押圧力を与える第２シリンダを前記軸方向に設けるステップと、
    　前記圧延方向の入側又は出側の他方に、前記第１シリンダ、および前記第１シリンダと前記軸受箱との間に配置されており、前記第１シリンダからのベンディング力を受ける部材を設けるステップと、を有する
    　ことを特徴とする圧延機の製造方法。     A roll that shifts in the axial direction and
    A bearing box that shifts with the roll and receives the load from the roll,
    A method for manufacturing a rolling mill comprising a first cylinder for bending the roll by applying a bending force in a vertical direction to the bearing box.
    A step of providing the first cylinder and a second cylinder that applies a pressing force in the rolling direction to the bearing box on either the entry side or the exit side in the rolling direction in the axial direction.
    A step of providing a member arranged between the first cylinder and the first cylinder and the bearing box on either the entry side or the exit side in the rolling direction and receiving a bending force from the first cylinder. A method for manufacturing a rolling mill, which comprises.
  10. 　軸方向にシフトするロールと、
    　前記ロールと共にシフトし、前記ロールからの荷重を受ける軸受箱と、
    　圧延方向の入側および出側に設けられており、前記軸受箱に鉛直方向にベンディング力を与えて前記ロールをベンディングさせる第１シリンダを有するベンディング装置と、を備えた圧延機の改造方法であって、
    　前記圧延方向の入側又は出側のうちいずれか一方の前記ベンディング装置を前記圧延機から取り外すステップと、
    　前記一方の前記ベンディング装置が取り外された場所に、前記第１シリンダ、および前記軸受箱に対して前記圧延方向の押圧力を与える第２シリンダを有するがた取りベンディング装置を取り付けるステップと、を有する
    　ことを特徴とする圧延機の改造方法。     A roll that shifts in the axial direction and
    A bearing box that shifts with the roll and receives the load from the roll,
    It is a method of modifying a rolling mill provided with a bending device having a first cylinder provided on the entry side and the exit side in the rolling direction and applying a bending force to the bearing box in the vertical direction to bend the roll. hand,
    A step of removing the bending device from the rolling mill on either the entry side or the exit side in the rolling direction.
    It has a step of attaching the first cylinder and a second cylinder for applying a pressing force in the rolling direction to the bearing box at a place where the one of the bending devices has been removed. A method of modifying a rolling mill, which is characterized by this.
PCT/JP2020/015731 2020-04-07 2020-04-07 Rolling mill, method for manufacturing rolling mill, and method for modifying rolling mill WO2021205548A1 (en)

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CN114340811A (en) 2022-04-12

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