Roll leveler and cleaning method for roll leveler

Abstract

To dispense with exchange of a workpiece and a cleaning member.SOLUTION: In a cleaning method of a roll leveler 1, in the state where a belt-like cleaning member 91U is sandwiched between a row of upper work rolls 12 and a first upper pad 21U on its upper side, the upper work rolls 12 are wiped with the cleaning member 91U by sending the cleaning member 91U in the row direction of the upper work rolls 12, or by rotating the upper work rolls 12.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to and roll Ru leveler cleaning In the law methods.

Background Art

[0002] Roll levelers are used, for example, to remove the winding irregularities and internal strains of strip-shaped materials such as steel and aluminum fed from coils mounted on uncoilers. A general roll leveler includes a plurality of upper rolls and a plurality of lower rolls arranged in a staggered pattern, and the work of the strip-shaped material fed from the coil is conveyed by pinch roll pairs so as to pass downstream between the rows of upper rolls and the rows of lower rolls. Since the work alternately receives bending by the upper rolls and bending back by the lower rolls, the work is corrected so that its winding irregularities are removed.

[0003] Foreign matter (for example, metal powder, etc.) may adhere to the surface of the work passing through the roll leveler. In this case, it will transfer and adhere to the outer peripheral surface of the roll. Also, foreign matter that has entered from the outside may adhere to the outer peripheral surface of the roll. When using a roll with foreign matter attached, the surface of the work will be scratched and become defective. Therefore, it is necessary to clean the rolls regularly.

[0004] Patent Document 1 discloses a roll cleaning tool in which non-woven fabrics are adhered to both sides of a stainless steel thin plate. The roll cleaning tool is fixed on the upstream side of the entrance of the roll leveler and is inserted between the upper roll and the lower roll of the roll leveler from the fixed position. Therefore, when the upper roll and the lower roll rotate, the outer peripheral surfaces of the upper roll and the lower roll are wiped by the roll cleaning tool.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] However, in the technology described in Patent Document 1, since the roll cleaning tool is inserted between the upper and lower rolls for cleaning, the removal of curling and internal distortion of the metal workpiece by the roll leveler must be temporarily stopped, and the workpiece and cleaning tool must be exchanged to clean the rolls.

[0007] Therefore, the present invention has been made in view of the above circumstances, and aims to eliminate the need to replace the workpiece and the cleaning member in the cleaning operation of the rolls of a roll leveler. [Means for solving the problem]

[0008] To solve the above problems, a method for cleaning a roll leveler is provided, comprising a plurality of first work rolls arranged parallel to each other, and a plurality of second work rolls parallel to the first work rolls, arranged along the row of the first work rolls, and offset in the row direction from each of the first work rolls, wherein a strip-shaped cleaning member is sandwiched between a pressing portion that is pressed against the first work roll on the opposite side of the row of second work rolls with respect to the row of first work rolls and the row of first work rolls, and the first work rolls are wiped with the cleaning member by moving the cleaning member in the row direction of the first work rolls or by rotating the first work rolls.

[0009] Furthermore, a roll leveler is provided comprising: a plurality of first work rolls arranged parallel to each other; a plurality of second work rolls parallel to the first work rolls and arranged along the row of the first work rolls and offset in the row direction from each of the first work rolls; a pressing portion that presses against the first work rolls on the opposite side of the row of second work rolls with respect to the row of first work rolls; a dispensing portion around which a strip-shaped cleaning member is wound and which dispenses the cleaning member; and a winding portion that winds up the cleaning member dispensed from the dispensing portion, wherein the cleaning member is guided from the dispensing portion through the pressing portion and the first work roll to the winding portion, and while sandwiched between the pressing portion and the first work roll, the first work roll is wiped by the cleaning member by the winding portion winding up the cleaning member or by the first work roll rotating.

[0010] According to the above cleaning method and roll leveler, since the cleaning member is sandwiched between the first work roll and the pressing part, the first work roll can be cleaned by the cleaning member regardless of whether or not a workpiece is present between the first work roll and the second work roll. Even if a workpiece is sandwiched between the first work roll and the second work roll, the first work roll can be cleaned without replacing the workpiece with the cleaning member. [Effects of the Invention]

[0011] According to the present invention, cleaning of the first work roll can be performed whether or not the workpiece is between the first work roll and the second work roll. Even if the workpiece is caught between the first work roll and the second work roll, cleaning of the first work roll can be performed without replacing the workpiece with a cleaning component. [Brief explanation of the drawing]

[0012] [Figure 1] This is a side view of Roll Leveler 1. [Figure 2] This is a side view of the roll leveler 1 showing the state in which the cleaning members 91U and 91L are inserted. [Figure 3] This is a side view of the roll leveler 1, showing how the reel rotates in forward and reverse directions. [Figure 4] This is a side view of the roll leveler 1a. [Figure 5] This is a side view of the roll leveler 1a showing the state in which the cleaning members 91U and 91L are inserted. [Modes for carrying out the invention]

[0013] Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below are subject to various technically preferred limitations for carrying out the present invention, but the scope of the present invention is not limited to the following embodiments and illustrated examples.

[0014] [Explanation of the Roll Leveler's Configuration] First, let's explain the configuration of the roll leveler. Figure 1 is a side view of the roll leveler 1. The roll leveler 1 straightens the strip-shaped workpiece 101 supplied from a workpiece supply device such as an uncoiler (not shown). The roll leveler 1 is installed downstream of the workpiece supply device, and the workpiece 101 passes through the roll leveler 1 from front to back. In other words, the direction of transport of the workpiece 101 is from front to back, with the front side being the upstream side and the back side being the downstream side.

[0015] The roll leveler 1 consists of a work roll group 11 composed of multiple upper work rolls 12 and multiple lower work rolls 13, pads 21U, 21L, 41U, 41L as pressing parts, opening and closing devices 22U, 22L, 42U, 42L, a pinch roll pair 31 composed of an upper pinch roll 32 and a lower pinch roll 33, a base 51, a lower frame 52, a machine frame 53, an upper frame 54, a suspension bolt 55, and The system comprises a lifting spring 56, an angle adjustment plate 57, four pressure-down bolts 58, an actuator 59, an upper roll frame 61, a lower roll frame 62, an upper pinch roll frame 63, a lower pinch roll frame 64, reels 71F, 71R, 74F, 74R, support parts 72F, 72R, 75F, 75R, motors 73F, 73R, 76F, 76R, a motor 81 as a drive unit, and a control unit 82. Here, the device comprising pinch rolls (conveyor rolls) 32, 33, pads 41U, 41L, opening / closing devices 42U, 42L, actuator 59, upper pinch roll frame 63, lower pinch roll frame 64, reels 71F, 71R, 74F, 74R, and motor 81 is a conveying device for conveying the workpiece 101.

[0016] Here, if the upper work roll 12 corresponds to the first work roll, then the lower work roll 13 corresponds to the second work roll, the upper pinch roll 32 corresponds to the first pinch roll, the lower pinch roll 33 corresponds to the second pinch roll, the pad 21U corresponds to the first pressing part, the pad 21L corresponds to the second pressing part, the pad 41U corresponds to the third pressing part, and the pad 41L corresponds to the fourth pressing part. On the other hand, if the lower work roll 13 corresponds to the first work roll, then the upper work roll 12 corresponds to the second work roll, the lower pinch roll 33 corresponds to the first pinch roll, the upper pinch roll 32 corresponds to the second pinch roll, the pad 21L corresponds to the first pressing part, the pad 21U corresponds to the second pressing part, the pad 41L corresponds to the third pressing part, and the pad 41U corresponds to the fourth pressing part.

[0017] The base portion 51 is installed on the floor surface. The lower frame 52 is assembled on the upper surface of the base portion 51. The lower roll frame 62 and the lower pinch roll frame 64 are assembled on the upper surface of the lower frame 52. Further, a plurality of machine frames 53 are assembled on the upper surface of the lower frame 52 in a standing state. The lower roll frame 62 and the lower pinch roll frame 64 are connected to the lower end portions of the machine frames 53. The upper frame 54 is supported by the upper end portions of the plurality of machine frames 53. The suspension bolt 55 penetrates the upper frame 54 vertically above the lower roll frame 62. The lifting spring 56 is wound around the suspension bolt 55 above the upper frame 54, and the lifting spring 56 is compressed while being sandwiched between the head of the suspension bolt 55 and the upper end portion of the upper frame 54. Therefore, the lifting spring 56 receives a reaction force from the upper frame 54 and biases the suspension bolt 55 upward. An angle adjustment plate 57 is attached to the lower end of the suspension bolt 55 via a rotating shaft 55a, and the angle adjustment plate 57 is provided so as to be tiltable around the rotating shaft 55a. The upper roll frame 61 is attached to the lower surface of the angle adjustment plate 57 in surface contact. The upper roll frame 61, the angle adjustment plate 57, and the suspension bolt 55 are supported by the upper frame 54 by the elastic force of the lifting spring 56.

[0018] On the front side of the suspension bolt 55, a pair of left and right pressing bolts 58 are screwed into the upper frame 54 so as to penetrate the upper frame 54. On the rear side of the suspension bolt 55, a pair of left and right pressing bolts 58 are screwed into the upper frame 54 so as to penetrate the upper frame 54. The lower ends of these pressing bolts 58 contact the upper surface of the angle adjustment plate 57, and the elastic force of the lifting spring 56 acts on the pressing bolts 58. By individually screwing the pressing bolts 58, the posture, angle, and vertical position of the angle adjustment plate 57 and the upper roll frame 61 can be adjusted.

[0019] The pinch roll pair 31 and the work roll group 11 are arranged in order from front to back. The pinch roll pair 31 is a feeder that introduces the work 101 to the roll level 1. The work roll group 11 corrects the work 101. Note that the pinch roll pair 31 may be arranged not only on the front side but also on the back side of the work roll group 11.

[0020] The pinch roll pair 31 is composed of an upper pinch roll 32 and a lower pinch roll 33 that are parallel to each other. The upper pinch roll 32 is rotatably attached to the upper pinch roll frame 63 via a bearing or the like. The upper pinch roll frame 63 is attached to the lower ends of a pair of left and right actuators 59. The pair of left and right actuators 59 are provided so as to hang down from the upper frame 54. The actuator 59 is, for example, an air cylinder or a hydraulic cylinder, and the upper pinch roll 32 and the upper pinch roll frame 63 are moved up and down by the actuator 59. Above the upper pinch roll 32, a second upper pad 41U is provided so as to be able to contact and separate from the circumferential surface of the upper pinch roll 32 in the vertical direction. The second upper pad 41U extends in the left - right direction so as to cover the circumferential surface of the upper pinch roll 32 from above. Above the second upper pad 41U, a second upper opening / closing device 42U is provided. The second upper opening / closing device 42U is, for example, an air cylinder or a hydraulic cylinder, and is composed of a cylinder part and a movable part that moves forward and backward in the vertical direction with respect to the cylinder part. The cylinder part of the second upper opening / closing device 42U is fixed to the upper pinch roll frame 63 by a bracket or the like not shown. The movable part of the second upper opening / closing device 42U is connected to the second upper pad 41U. When the movable part of the second upper opening / closing device 42U moves downward from the cylinder part, the second upper pad 41U is pressed against the upper pinch roll 32, and when the movable part of the second upper opening / closing device 42U is pulled into the cylinder part, the second upper pad 41U separates upward from the upper pinch roll 32.

[0021] The lower pinch roll 33 is rotatably mounted to the lower pinch roll frame 64 via bearings or the like. The upper pinch roll 32 is provided so as to be able to move toward and away from the lower pinch roll 33 in the vertical direction. Both the upper pinch roll 32 and the lower pinch roll 33 are connected to the motor 81 via a transmission mechanism, but either the upper pinch roll 32 or the lower pinch roll 33 may be connected to the motor 81 via a transmission mechanism. The motor 81 is controlled by a control unit 82.

[0022] A work roll group 11 is positioned behind the pinch roll pair 31. The work roll group 11 consists of a plurality of upper work rolls 12 and a plurality of lower work rolls 13 arranged facing each other vertically. Each upper work roll 12 is attached to the upper roll frame 61 via bearings, etc., and each lower work roll 13 is attached to the lower roll frame 62 via bearings, etc. These upper work rolls 12 are arranged parallel to each other and in the front-to-back direction. Below the rows of upper work rolls 12, the lower work rolls 13 are arranged parallel to each other and in the front-to-back direction. When the upper work rolls 12 and lower work rolls 13 are viewed from the side in the axial direction (i.e., left-to-right direction), the upper work rolls 12 and lower work rolls 13 are arranged in a zigzag or staggered pattern. In other words, each lower work roll 13 is offset from the upper work rolls 12 in the row direction (i.e., front-to-back direction). The column-direction displacement between the upper work roll 12 and the lower work roll 13 is less than the distance between the central axes of adjacent lower work rolls 13 or adjacent upper work rolls 12, and preferably equal to half of that distance. The upper work roll 12 and the lower work roll 13 are connected to the motor 81 via a transmission mechanism. Alternatively, either the upper work roll 12 or the lower work roll 13 may be connected to the motor 81 via a transmission mechanism.

[0023] Inside the upper roll frame 61, above the multiple upper work rolls 12, is a first upper pad 21U that can move toward and away from these upper work rolls 12 in the vertical direction. The first upper pad 21U extends in the front-rear and left-right directions so as to cover the circumferential surfaces of the multiple upper work rolls 12 from above. The first upper pad 21U is connected to a first upper opening / closing device 22U above it, and the first upper opening / closing device 22U is attached to the upper roll frame 61. The first upper opening / closing device 22U, like the second upper opening / closing device 42U, is, for example, an air cylinder or a hydraulic cylinder that raises and lowers the first upper pad 21U. When the first upper opening / closing device 22U moves the first upper pad 21U downward, the first upper pad 21U is pressed against the upper work roll 12, and when the first upper opening / closing device 22U moves the first upper pad 21U upward, the first upper pad 21U is separated from the upper work roll 12.

[0024] At the front end of the upper frame 54, a pair of support sections 72F, or one of them on either the left or right side, are provided so as to protrude forward. A front reel 71F is detachably mounted on the support section 72F. A front motor 73F is attached to the support section 72F, and the front reel 71F mounted on the support section 72F is detachably connected to the front motor 73F. When the front reel 71F is disconnected from the front motor 73F, the front reel 71F becomes detachable from the support section 72F. When the front motor 73F operates, torque is applied to the front reel 71F. For example, if the front motor 73F is a motor with a brake, the front motor 73F also provides braking force to the front reel 71F.

[0025] At the rear end of the upper frame 54, a pair of support parts 72R, or one on either the left or right side, are provided so as to protrude to the rear. The rear reel 71R is detachably mounted on the support parts 72R. The rear motor 73R is attached to the support parts 72R, and the rear reel 71R mounted on the support parts 72R is detachably connected to the rear motor 73R. When the rear reel 71R is disconnected from the rear motor 73R, the rear reel 71R can be removed from the support parts 72R. When the rear motor 73R is operated, torque is applied to the rear reel 71R. The rear motor 73R also provides braking force to the rear reel 71R.

[0026] A strip-shaped cleaning member 91U is wound around one reel 71F, 71R, and the cleaning member 91U unwound from the other reel is attached to the other reel and connected. The cleaning member 91U is passed between a plurality of upper work rolls 12 and a first upper pad 21U in the middle of the reel 71F, 71R, and is sandwiched between the upper work rolls 12 and the first upper pad 21U. The cleaning member 91U is also passed between an upper pinch roll 32 and a second upper pad 41U, and is sandwiched between the upper pinch roll 32 and the second upper pad 41U.

[0027] Inside the lower roll frame 62, below the plurality of lower work rolls 13, is provided a first lower pad 21L that can move toward and away from these lower work rolls 13 in the vertical direction. The first lower pad 21L extends in the front-rear and left-right directions so as to cover the circumferential surfaces of the plurality of lower work rolls 13 from below. The first lower pad 21L is connected to a first lower opening / closing device 22L located below it, and the first lower opening / closing device 22L is attached to the lower roll frame 62. The first lower opening / closing device 22L is, for example, an air cylinder or a hydraulic cylinder that raises and lowers the first lower pad 21L. When the first lower opening / closing device 22L moves the first lower pad 21L upward, the first lower pad 21L is pressed against the lower work rolls 13, and when the first lower opening / closing device 22L moves the first lower pad 21L downward, the first lower pad 21L moves downward away from the lower work rolls 13.

[0028] Below the lower pinch roll 33, a second lower pad 41L is provided so as to be able to move toward and away from the circumferential surface of the lower pinch roll 33 in the vertical direction. The second lower pad 41L extends in the left-right direction so as to cover the circumferential surface of the lower pinch roll 33 from below. The second lower pad 41L is connected to a second lower opening / closing device 42L below it, and the second lower opening / closing device 42L is attached to the lower pinch roll frame 64. The second lower opening / closing device 42L is, for example, an air cylinder or a hydraulic cylinder that raises and lowers the second lower pad 41L. When the second lower opening / closing device 42L moves the second lower pad 41L upward, the second lower pad 41L is pressed against the lower pinch roll 33, and when the second lower opening / closing device 42L moves the second lower pad 41L downward, the second lower pad 41L moves downward away from the lower pinch roll 33.

[0029] At the front end of the lower frame 52, a pair of support sections 75F, or one of them on either the left or right side, are provided to protrude forward. A front reel 74F is detachably mounted on the support section 75F. A front motor 76F is attached to the support section 75F, and the front reel 74F mounted on the support section 75F is detachably connected to the front motor 76F. When the front reel 74F is disconnected from the front motor 76F, the front reel 74F can be removed from the support section 75F. When the front motor 76F operates, torque is applied to the front reel 74F. The front motor 76F also provides braking force to the front reel 74F.

[0030] At the rear end of the lower frame 52, a pair of support parts 75R, or one from either the left or right side, are provided so as to protrude to the rear. The rear reel 74R is detachably mounted on the support parts 75R. The rear motor 76R is attached to the support parts 75R, and the rear reel 74R mounted on the support parts 75R is detachably connected to the rear motor 76R. When the rear reel 74R is disconnected from the rear motor 76R, the rear reel 74R can be removed from the support parts 75R. When the rear motor 76R is operated, torque is applied to the rear reel 74R. The rear motor 76R also provides braking force to the rear reel 74R.

[0031] A strip-shaped cleaning member 91L is wound around one reel 74F, 74R, and the cleaning member 91L unwound from the other reel is attached to the other reel and connected. The cleaning member 91L is passed between a plurality of lower work rolls 13 and a first lower pad 21L in the middle of the space between the reels 74F, 74R, and is sandwiched between the lower work rolls 13 and the first lower pad 21L. The cleaning member 91L is also passed between a lower pinch roll 33 and a second lower pad 41L, and is sandwiched between the lower pinch roll 33 and the second lower pad 41L.

[0032] The cleaning members 91U and 91L are, for example, cloth, paper, adhesive tape, or composite sheets. The cloth may be knitted, woven, or nonwoven, and the fibers used in the cloth may be natural fibers or synthetic fibers (artificial fibers). Examples of synthetic fibers include inorganic fibers (e.g., carbon fibers) or organic fibers (e.g., polyester synthetic fibers, polyamide synthetic fibers). The adhesive tape may be either single-sided or double-sided adhesive tape. A composite sheet refers to a thin, strip-shaped flexible material (e.g., steel plate, stainless steel plate) with cloth or adhesive attached to one or both sides. In addition, a lubricating liquid such as oil or a cleaning liquid may be impregnated into or applied to the cleaning members 91U and 91L.

[0033] [Explanation of the operation of the roll leveler] Next, we will explain how to correct workpiece 101 using roll leveler 1.

[0034] First, the workpiece 101 is inserted sequentially between the upper pinch roll 32 and the lower pinch roll 33, and between the row of upper work rolls 12 and the row of lower work rolls 13. Next, the actuator 59 is activated to bring the upper pinch roll 32 closer to the lower pinch roll 33, thereby sandwiching the workpiece 101 between the upper and lower pinch rolls 32 and 33. Alternatively, the upper pinch roll 32 may be brought closer to the lower pinch roll 33 by rotating a bolt instead of the actuator 59. Next, the upper work roll 12 is lowered by rotating the reduction bolt 58, and the workpiece 101 is sandwiched between the row of upper work rolls 12 and the row of lower work rolls 13. With this, the setting of the workpiece 101 is completed. Subsequently, the motor 81 is controlled by the control unit 82, and the upper pinch roll 32, lower pinch roll 33, upper work roll 12, and lower work roll 13 are intermittently or continuously driven to rotate by the motor 81. As a result, the workpiece 101 is conveyed intermittently or continuously in the direction from the pinch roll pair 31 toward the work roll group 11. The conveying direction of the workpiece 101 is toward the rear, and the conveying direction of the workpiece 101 is parallel to the row direction of the lower work rolls 13. Alternatively, either the upper pinch roll 32 or the lower pinch roll 33 may be driven to rotate by the motor 81, and the other may rotate along with it.

[0035] As the workpiece 101 passes downstream between the row of upper work rolls 12 and the row of lower work rolls 13, the workpiece 101 is straightened by the upper work rolls 12 and the lower work rolls 13. The workpiece 101, after being discharged from the work roll group 11, is then transported to another process, such as a press.

[0036] [Instructions on cleaning methods] Next, the cleaning method for the roll leveler 1 will be explained using Figures 1 and 2. In the following explanation, the front reel 71F and front motor 73F are used to unwind the cleaning member 91U, and the front reel 71F and front motor 73F are the unwinding section for unwinding the cleaning member 91U. The rear reel 71R and rear motor 73R are used to wind up the cleaning member 91U, and the rear reel 71R and rear motor 73R are the winding section for winding up the cleaning member 91U. The front reel 74F and front motor 76F are used to unwind the cleaning member 91L, and the front reel 74F and front motor 76F constitute the unwinding section for unwinding the cleaning member 91L. The rear reel 74R and rear motor 76R are used to wind up the cleaning member 91L, and the rear reel 74R and rear motor 76R constitute the winding section for winding up the cleaning member 91L.

[0037] First, the front reels 71F and 74F, around which the cleaning members 91U and 91L are wound, are attached to the support sections 72F and 75F, respectively. Next, as shown in Figure 2, the first upper opening / closing device 22U is activated to separate the first upper pad 21U from the upper surface of the upper work roll 12. Similarly, the second upper opening / closing device 42U is activated to separate the second upper pad 41U from the upper pinch roll 32. Next, the cleaning member 91U is pulled out from the front reel 71F and inserted between the second upper pad 41U and the upper pinch roll 32. Subsequently, it is inserted between the first upper pad 21U and the upper work roll 12. Finally, the cleaning member 91U is wound around the rear reel 71R.

[0038] Next, as shown in Figure 1, the second upper opening / closing device 42U is activated to move the second upper pad 41U downward, and the cleaning member 91U is sandwiched between the second upper pad 41U and the upper pinch roll 32. Similarly, the first upper opening / closing device 22U is activated to move the first upper pad 21U downward, and the cleaning member 91U is sandwiched between the first upper pad 21U and the upper work roll 12.

[0039] Similarly, the cleaning member 91L is inserted through the front reel 74F in order between the second lower pad 41L and the lower pinch roll 33, and between the first lower pad 21L and the lower work roll 13, and the cleaning member 91L is wound around the rear reel 74R. Then, the cleaning member 91L is sandwiched between the second lower pad 41L and the lower pinch roll 33, and the cleaning member 91L is sandwiched between the first lower pad 21L and the lower work roll 13.

[0040] Next, with the front reels 71F and 74F stopped, the rear reels 71R and 74R are rotated manually or by the rear motors 73R and 76R. This winds the cleaning members 91U and 91L onto the rear reels 71R and 74R and removes any slack in the cleaning members 91U and 91L. With this, the setting of the cleaning members 91U and 91L is complete.

[0041] Next, set up the workpiece 101 in the same manner as described above. Note that the order in which the cleaning members 91U and 91L are set up and the workpiece 101 are set up may be reversed.

[0042] Next, the motor 81 is activated to rotate the lower pinch roll 33 and the multiple lower work rolls 13, which are connected to the motor 81, clockwise from the viewpoint shown in Figure 1. Similarly, the upper pinch roll 32 and the multiple upper work rolls 12, which are connected to the motor 81, are rotated counterclockwise. Thus, the workpiece 101 is conveyed from the front to the back of the roll leveler 1 and straightened by the upper work rolls 12 and the lower work rolls 13.

[0043] During the straightening of workpiece 101, the rear motors 73R and 76R are activated to rotate the rear reels 71R and 74R, thereby winding the cleaning members 91U and 91L onto the rear reels 71R and 74R. As the cleaning members 91U and 91L are pulled by the rear reels 71R and 74R, they are unwound from the front reels 71F and 74F. While the rear reels 71R and 74R are rotating, the front motors 73F and 76F are activated to apply braking force from the front motors 73F and 76F to the front reels 71F and 74F, thereby braking the front reels 71F and 74F. This keeps the cleaning members 91U and 91L, as they are wound onto the rear reels 71R and 74R, taut and prevents them from bending.

[0044] Through the interlocking action of the front motors 73F and 76F and the rear motors 73R and 76R as described above, the cleaning components 91U and 91L are transported from the front reels 71F and 74F to the rear reels 71R and 74R.

[0045] The cleaning member 91U is sandwiched between the upper work roll 12 and the first upper pad 21U and passes forward between them. As a result, the circumferential surface of the upper work roll 12 is wiped by the cleaning member 91U, and any foreign matter adhering to the circumferential surface of the upper work roll 12 is wiped away by the cleaning member 91U. Similarly, the circumferential surface of the upper pinch roll 32 is wiped by the cleaning member 91U, and the circumferential surfaces of the lower work roll 13 and lower pinch roll 33 are wiped by the cleaning member 91L.

[0046] Here, since the rotation direction of the upper pinch roll 32 and the upper work roll 12 is opposite to the conveying direction of the cleaning member 91U, the cleaning member 91U slides against the upper pinch roll 32 and the upper work roll 12. Therefore, the upper pinch roll 32 and the upper work roll 12 are efficiently wiped by the cleaning member 91U. Similarly, since the rotation direction of the lower pinch roll 33 and the lower work roll 13 is opposite to the conveying direction of the cleaning member 91L, the lower pinch roll 33 and the lower work roll 13 are efficiently wiped by the cleaning member 91L.

[0047] Furthermore, when the workpiece 101 is transported intermittently, the cleaning members 91U and 91L continue to be transported without stopping even when the workpiece 101 is temporarily suspended. As a result, the pinch rolls 32 and 33 and the work rolls 12 and 13 are efficiently wiped by the sliding action of the cleaning members 91U and 91L.

[0048] Furthermore, the first upper opening / closing device 22U may operate periodically, causing the first upper pad 21U to periodically separate from the upper work roll 12, and the second upper opening / closing device 42U may operate in synchronization with this, causing the second upper pad 41U to periodically separate from the upper pinch roll 32. This ensures that even if the cleaning member 91U is partially deflected due to slippage, it returns to a state of even tension. Similarly, the first lower pad 21L may periodically separate from the lower work roll 13, and in synchronization with this, the second lower pad 41L may periodically separate from the lower pinch roll 33.

[0049] Furthermore, the first upper opening / closing device 22U may operate periodically, causing the load pressing the first upper pad 21U against the upper work roll 12 to decrease periodically, and the second upper opening / closing device 42U may operate in synchronization with this, causing the load pressing the second upper pad 41U against the upper pinch roll 32 to decrease periodically. The second upper pad 41U may also move away from the upper pinch roll 32 periodically. As a result, even if the cleaning member 91U is partially deflected due to slippage, the cleaning member 91U will return to a state of even tension. The load pressing the first lower pad 21L against the lower work roll 13 may decrease periodically, and the load pressing the second lower pad 41L against the lower pinch roll 33 may decrease periodically.

[0050] [Advantageous effects] In the roll leveler 1 described above, the first upper pad 21U is positioned on the opposite side of the lower work roll 13 with respect to the upper work roll 12 and is pressed against the upper work roll 12 from above. Therefore, even when the workpiece 101 is straightened by the upper work roll 12 and the lower work roll 13, the cleaning member 91U can be sandwiched between the first upper pad 21U and the upper work roll 12, and the upper work roll 12 can be cleaned by the cleaning member 91U. In other words, the straightening of the workpiece 101 and the cleaning of the upper work roll 12 can be performed simultaneously. Similarly, the upper pinch roll 32, the lower work roll 13 and the lower pinch roll 33 can be cleaned during the straightening of the workpiece 101.

[0051] Furthermore, the cleaning member 91U is unwound from the front reel 71F and wound onto the rear reel 71R. With this configuration, the upper work roll 12 and the upper pinch roll 32 are always supplied with clean cleaning member 91U, resulting in high cleaning efficiency for the upper work roll 12 and the upper pinch roll 32. The same applies to the cleaning member 91L.

[0052] <<Variation>> The embodiments for carrying out the present invention have been described above. The above embodiments are provided to facilitate understanding of the present invention and are not intended to limit the interpretation of the present invention. Furthermore, the embodiments of the present invention can be modified and improved without departing from the spirit of the invention, and the present invention also includes equivalents thereof. The changes from the above embodiments are described below. The changes described below may be applied in combination.

[0053] (1) Variation 1 The direction in which the cleaning member 91U is transported may be reversed. In this case, the rear reel 71R and rear motor 73R are used to unwind the cleaning member 91U, and the rear reel 71R and rear motor 73R constitute the unwinding section for unwinding the cleaning member 91U. Furthermore, the front reel 71F and front motor 73F are used to wind up the cleaning member 91U, and the front reel 71F and front motor 73F constitute the winding section for winding up the cleaning member 91U.

[0054] In this case, the transport speed of the cleaning member 91U due to the interlocking of the front motor 73F and the rear motor 73R is lower or higher than the transport speed of the workpiece 101 by the pinch rolls 32 and 33. When the transport speed of the cleaning member 91U differs from the transport speed of the workpiece 101, the cleaning member 91U slides against the upper pinch roll 32 and the upper work roll 12, so that the upper pinch roll 32 and the upper work roll 12 are efficiently wiped by the cleaning member 91U. The transport speed of the cleaning member 91U may be equal to the transport speed of the workpiece 101.

[0055] (2) Modification example 2 The direction in which the cleaning component 91L is transported may be reversed. In this case, the rear reel 74R and rear motor 76R are used to unwind the cleaning member 91L, and the rear reel 74R and rear motor 76R constitute the unwinding section for unwinding the cleaning member 91L. The front reel 74F and front motor 76F are used to wind up the cleaning member 91L, and the front reel 74F and front motor 76F constitute the winding section for winding up the cleaning member 91L.

[0056] In this case, the transport speed of the cleaning member 91L due to the interlocking of the front motor 76F and the rear motor 76R is lower or higher than the transport speed of the workpiece 101 by the pinch rolls 32 and 33. When the transport speed of the cleaning member 91L differs from the transport speed of the workpiece 101, the cleaning member 91L slides against the lower pinch roll 33 and the lower work roll 13, so that the lower pinch roll 33 and the lower work roll 13 are efficiently wiped by the cleaning member 91L. The transport speed of the cleaning member 91L may be equal to the transport speed of the workpiece 101.

[0057] (3) Modification example 3 In the above embodiment, the straightening of the workpiece 101 and the cleaning of the work rolls 12, 13 and pinch rolls 32, 33 were performed simultaneously. However, the cleaning of the work rolls 12, 13 and pinch rolls 32, 33 may be performed separately.

[0058] In this case, the rear reel 71R and rear motor 73R may be used to wind up the cleaning member 91U, the front reel 71F and front motor 73F may be used to unwind the cleaning member 91U, the rear reel 74R and rear motor 76R may be used to wind up the cleaning member 91L, and the front reel 74F and front motor 76F may be used to unwind the cleaning member 91L. In other words, when the cleaning members 91U and 91L are wound onto the rear reels 71R and 74R by operating the rear motors 73R and 76R and rotating the rear reels 71R and 74R, the front motors 73F and 76F are operated to brake the front reels 71F and 74F. The upper work roll 12, upper pinch roll 32, lower work roll 13, and lower pinch roll 33 are wiped by the transport of the cleaning members 91U and 91L.

[0059] Of course, without performing the straightening work on the workpiece 101, the cleaning members 91U and 91L may be wound onto the front reels 71F and 74F as in the embodiment described above.

[0060] Since the cleaning member 91U is sandwiched between the upper work roll 12 and the upper first upper pad 21U, the upper work roll 12 can be cleaned without replacing the work roll 101 with the cleaning member, even if the workpiece 101 is sandwiched between the upper work roll 12 and the lower work roll 13. Similarly, the upper pinch roll 32, the lower work roll 13, and the lower pinch roll 33 can be cleaned.

[0061] (4) Modification 4 In the above embodiment, the cleaning members 91U and 91L were transported to clean the pinch rolls 32 and 33 and the work rolls 12 and 13. However, the pinch rolls 32 and 33 and the work rolls 12 and 13 may also be cleaned with the cleaning members 91U and 91L stopped. Specifically, the cleaning member 91U is sandwiched between the first upper pad 21U and the upper work roll 12 and between the second upper pad 41U and the upper pinch roll 32, and the cleaning member 91L is sandwiched between the first lower pad 21L and the lower work roll 13 and between the second lower pad 41L and the lower pinch roll 33. In this state, the pinch rolls 32 and 33 and the work rolls 12 and 13 are driven by the motor 81. As a result, the circumferential surfaces of the pinch rolls 32 and 33 and the work rolls 12 and 13 are wiped by the cleaning members 91U and 91L, thus cleaning the circumferential surfaces of the pinch rolls 32 and 33 and the work rolls 12 and 13. In this case, motors 73F, 73R, 76F, and 76R apply braking force to reels 71F, 71R, 74F, and 74R to prevent the cleaning members 91U and 91L from being pulled out. The direction of rotation of the pinch rolls 32 and 33 and the work rolls 12 and 13 may be either forward or reverse, or the forward and reverse rotations of the pinch rolls 32 and 33 and the work rolls 12 and 13 may be alternately repeated. Forward rotation is rotation in the direction that transports the workpiece 101 from front (upstream) to back (downstream), and reverse rotation is rotation in the direction that transports the workpiece 101 from back to front. When the pinch rolls 32 and 33 and the work rolls 12 and 13 are rotated in the forward direction, the workpiece 101 may be straightened simultaneously with the cleaning of the pinch rolls 32 and 33 and the work rolls 12 and 13.

[0062] Furthermore, if the cleaning members 91U and 91L become worn or damaged during cleaning, or if the stopping time of the cleaning members 91U and 91L reaches a predetermined time, the cleaning members 91U and 91L are transported a predetermined distance. This allows the pinch rolls 32 and 33 and the work rolls 12 and 13 to be cleaned with a fresh portion of the cleaning members 91U and 91L.

[0063] In the modified example 4, even if the workpiece 101 is sandwiched between the upper work roll 12 and the lower work roll 13, the upper work roll 12, the upper pinch roll 32, the lower work roll 13, and the lower pinch roll 33 can be cleaned without replacing the workpiece 101 with a cleaning member.

[0064] (5) Variation 5 The direction in which the cleaning members 91U and 91L are transported from the rear reels 71R and 74R to the front reels 71F and 74F is defined as the forward direction, and the direction in which the cleaning members 91U and 91L are transported from the front reels 71F and 74F to the rear reels 71R and 74R is defined as the reverse direction. In this case, as shown in Figure 3, the transport of the cleaning members 91U and 91L in the forward direction and the transport in the reverse direction may be repeated alternately in short cycles during the straightening work of the workpiece 101 as in the above embodiment or modified examples 1 and 2, or when the straightening work of the workpiece 101 is not being performed as in modified example 3.

[0065] During forward transport, the front motors 73F and 76F rotate the front reels 71F and 74F, winding the cleaning members 91U and 91L onto the front reels 71F and 74F. In addition, the rear motors 73R and 76R brake the rear reels 71R and 74R.

[0066] During reverse transport, the rear motors 73R and 76R rotate the rear reels 71R and 74R, winding the cleaning members 91U and 91L onto the rear reels 71R and 74R. Additionally, the front motors 73F and 76F brake the front reels 71F and 74F.

[0067] If the cleaning members 91U and 91L are wound onto the rear reels 71R and 74R before cleaning, the distance the cleaning members 91U and 91L are transported in the forward direction per turn by the front motors 73F and 76F rotating the front reels 71F and 74F (i.e., the length of cleaning members 91U and 91L wound up per turn by the front motors 73F and 76F) is longer than the distance the cleaning members 91U and 91L are transported in the reverse direction per turn by the rear motors 73R and 76R rotating the rear reels 71R and 74R (i.e., the length of cleaning members 91U and 91L wound up per turn by the rear motors 73R and 76R). Therefore, the cleaning members 91U and 91L are wound onto the front reels 71F and 74F little by little.

[0068] On the other hand, if the cleaning members 91U and 91L are wound onto the front reels 71F and 74F before cleaning, the distance the cleaning members 91U and 91L are transported in the reverse direction each time the rear reels 71R and 74R are rotated by the rear motors 73R and 76R (i.e., the length of cleaning members 91U and 91L wound up each time the rear motors 73R and 76R rotate) is longer than the distance the cleaning members 91U and 91L are transported in the forward direction each time the front reels 71F and 74F are rotated by the front motors 73F and 76F (i.e., the length of cleaning members 91U and 91L wound up each time the front motors 73F and 76F rotate). Therefore, the cleaning members 91U and 91L are wound onto the rear reels 71R and 74R little by little.

[0069] In the modified example 5, the upper work roll 12, upper pinch roll 32, lower work roll 13, and lower pinch roll 33 can be cleaned without replacing the workpiece 101 sandwiched between the upper work roll 12 and the lower work roll 13 with a cleaning member.

[0070] Furthermore, since the cleaning members 91U and 91L are transported in small increments, foreign matter adhering to the circumferential surfaces of the upper work roll 12, upper pinch roll 32, lower work roll 13, and lower pinch roll 33 can be efficiently wiped away.

[0071] (6) Variation 6 Refer to Figure 4 to explain the roll leveler 1a. Here, the same reference numerals are used to denote corresponding components between the roll leveler 1 and the roll leveler 1a, and the differences between the roll leveler 1 and the roll leveler 1a will be explained primarily. Except for the differences described below, the roll leveler 1 and the roll leveler 1a are provided in the same way, so the explanation of their common features will be omitted.

[0072] Roll leveler 1a is a roll leveler in which a pressing body 111 is provided instead of the first lower pad 21L and the second lower pad 41L, and an opening / closing device 115 is provided instead of the first lower opening / closing device 22L and the second lower opening / closing device 42L.

[0073] A pressing body 111 is provided so as to be able to move toward and away from the lower surfaces of the lower work rolls 13 and the lower pinch roll 33, straddling the interior of the lower roll frame 62 and the lower pinch roll frame 64. The pressing body 111 comprises a body 112, a plurality of rolls 113, and a shaft portion 114. The body 112 is provided in the front-rear and left-right directions from below the lower pinch roll 33 to below the lower work roll 13. The plurality of rolls 113 are rotatably mounted on the upper surface of the body 112 at intervals in the front-rear direction. The body 112 is rotatably mounted to the frame (lower pinch roll frame 64 in this embodiment) by the shaft portion 114. An opening / closing device 115 is mounted on the upper surface of the base portion 51. The opening / closing device 115 consists of a cylinder portion and a movable portion, with the cylinder portion mounted downwards and the movable portion mounted upwards. The upper end of the movable portion of the opening / closing device 115 is attached to the rear side and below the body 112. As the movable part of the opening / closing device 115 moves up and down, the body 112 rotates around the shaft 114 as the center of rotation, causing the pressing body 111 to move away from or into contact with the lower pinch roll 33 and the lower work roll 13.

[0074] [Instructions on cleaning methods] Next, the cleaning method for the roll leveler 1a will be explained using Figures 4 and 5. The cleaning method for the roll leveler 1a is the same as in the above embodiment, modification 1, modification 2, modification 3, modification 4, or modification 5. In other words, when cleaning this roll leveler 1a, the straightening of the workpiece 101 and the cleaning of the work rolls 12, 13 and pinch rolls 32, 33 may be performed simultaneously, as in the above embodiment or modifications 1 and 2; the cleaning of the work rolls 12, 13 and pinch rolls 32, 33 may be performed separately, as in modification 3; the pinch rolls 32, 33 and work rolls 12, 13 may be cleaned with the cleaning members 91U and 91L stopped, as in modification 4; or the forward and reverse transport of the cleaning members 91U and 91L may be repeated alternately in short cycles, as in modification 5. However, the setting method for the cleaning member 91L is different for the roll leveler 1a. The setting method for the cleaning member 91L will be explained below.

[0075] First, the front reel 74F, around which the cleaning member 91L is wound, is attached to the support section 75F. Next, as shown in Figure 5, the opening / closing device 115 is operated to separate the pressing body 111 from the lower work roll 13 and the lower pinch roll 33. Next, the cleaning member 91L is pulled out from the front reel 74F and inserted between the pressing body 111 and the lower pinch roll 33. Subsequently, it is inserted between the pressing body 111 and the lower work roll 13. Finally, the cleaning member 91L is wound onto the rear reel 74R.

[0076] Next, the opening / closing device 115 is activated to move the movable part of the opening / closing device 115 upward, thereby rotating the pressing body 111 upward around the shaft 114, and the cleaning member 91L is sandwiched between the pressing body 111 and the lower work roll 13 and between the pressing body 111 and the lower pinch roll 33.

[0077] (7) Variation 7 In the above embodiment, the pinch rolls 32, 33 and pads 41U, 41L are located in front of the rows of work rolls 12, 13. Alternatively, the pinch rolls 32, 33 and pads 41U, 41L may be located behind the rows of work rolls 12, 13. In this case, the cleaning member 91U is guided from the rear reel 71R through the space between the second upper pad 41U and the upper pinch roll 32, and between the first upper pad 21U and the upper work roll 12, up to the front reel 71F. Similarly, the cleaning member 91L is guided from the rear reel 74R through the space between the second lower pad 41L and the lower pinch roll 33, and between the first lower pad 21L and the lower work roll 13, up to the front reel 74F.

[0078] (8) Variation 8 In the above embodiment, the conveying device for transporting the workpiece 101 is incorporated into the roll levelers 1,1a, but the conveying device may be provided independently of the roll levelers 1,1a. [Explanation of symbols]

[0079] 1, 1a... Roll leveler 12… Upper work roll 13…Lower work roll 21U, 21L, 41U, 41L… pad 32... Upper pinch roll 33... Lower pinch roll 71F, 71R, 74F, 74R... Reels 73F, 73R, 76F, 76R…motor 81…motor 91U, 91L… Cleaning parts

Claims

1. Multiple first work rolls arranged parallel to each other, A method for cleaning a roll leveler comprising: a plurality of second work rolls that are parallel to the first work roll, arranged along a row of the first work rolls, and offset in the row direction from each of the first work rolls; With respect to the row of the first work rolls, a strip-shaped cleaning member is sandwiched between the pressing portion that is pressed against the first work roll on the opposite side of the row of the second work rolls and the row of the first work rolls, and the first work rolls are wiped with the cleaning member by moving the cleaning member in the direction of the row of the first work rolls or by rotating the first work rolls. The pressing portion is periodically separated from the first work roll. The strip-shaped workpiece is conveyed by passing it between the row of the first work rolls and the row of the second work rolls, thereby straightening the workpiece while the cleaning member wipes and cleans the first work rolls. How to clean a roll leveler.

2. With respect to the row of the second work rolls, a strip-shaped second cleaning member is sandwiched between the row of the second work rolls and the second pressing portion which is pressed against the second work roll on the opposite side of the row of the first work rolls, and the second work rolls are wiped with the second cleaning member by moving the second cleaning member in the direction of the row of the second work rolls or by rotating the second work rolls. The method for cleaning a roll leveler according to claim 1.

3. With respect to the first pinch roll, the cleaning member is sandwiched between the third pressing portion, which is pressed against the first pinch roll on the opposite side of the second pinch roll among the pair of pinch rolls arranged in front of or behind the row of the first work roll and the first pinch roll, and the cleaning member is used to wipe the first pinch roll with the cleaning member by feeding the cleaning member or by rotating the first pinch roll. A method for cleaning a roll leveler according to claim 1 or 2.

4. With respect to the first pinch roll, the cleaning member is sandwiched between the third pressing portion, which is pressed against the first pinch roll on the opposite side of the second pinch roll among the pair of pinch rolls arranged in front of or behind the row of the first work roll and the first pinch roll, and the cleaning member is moved or the first pinch roll is rotated to wipe the first pinch roll with the cleaning member. With respect to the second pinch roll, the second cleaning member is sandwiched between the second pinch roll and the fourth pressing portion, which is pressed against the second pinch roll on the opposite side of the first pinch roll, and the second pinch roll is wiped with the second cleaning member by feeding the second cleaning member or by rotating the second pinch roll. The method for cleaning a roll leveler according to claim 2.

5. The cleaning member is alternately moved forward and backward, and the forward movement distance of the cleaning member is made greater than the backward movement distance of the cleaning member. A method for cleaning a roll leveler according to any one of claims 1 to 4.

6. Multiple first work rolls arranged parallel to each other, A plurality of second work rolls are parallel to the first work roll, arranged along the row of the first work roll, and offset in the row direction from each of the first work rolls, A pressing portion that presses against the first work roll on the opposite side of the second work roll row with respect to the first work roll row, A strip-shaped cleaning member is wound around a dispensing unit for unwinding the cleaning member, A winding section for winding up the cleaning member that is unwound from the dispensing section, Equipped with, The cleaning member is passed from the dispensing section between the pressing section and the first work roll and guided to the winding section, and while sandwiched between the pressing section and the first work roll, the first work roll is wiped by the cleaning member when the winding section winds up the cleaning member or when the first work roll rotates. The pressing portion is periodically separated from the first work roll, The system further comprises a drive unit that drives the first work roll or the second work roll or both thereof. With the strip-shaped workpiece sandwiched between the row of the first work rolls and the row of the second work rolls, when the drive unit drives the first work roll, the second work roll, or both, the winding unit winds up the cleaning member. Roll leveler.

7. A second pressing portion is pressed against the second work roll on the opposite side of the first work roll row with respect to the row of the second work roll, A strip-shaped second cleaning member is wound around a second dispensing unit that dispenses the second cleaning member, A second winding unit that winds up the second cleaning member unwound from the second dispensing unit, Furthermore, The second cleaning member is passed from the second dispensing section between the second pressing section and the first work roll and guided to the second winding section, and while sandwiched between the second pressing section and the first work roll, the second work roll is wiped by the second cleaning member when the second winding section winds up the second cleaning member or when the second work roll rotates. The roll leveler according to claim 6.

8. A pair of pinch rolls positioned in front of or behind the rows of the first work roll and the second work roll, With respect to the first pinch roll of the pair of pinch rolls, a third pressing portion is provided that is pressed against the first pinch roll on the opposite side of the second pinch roll, Furthermore, The cleaning member is further passed between the third pressing portion and the first pinch roll, and while sandwiched between the third pressing portion and the first pinch roll, the winding portion winds up the cleaning member or the first pinch roll rotates, causing the first pinch roll to be wiped by the cleaning member. The roll leveler according to claim 6 or 7.

9. A pair of pinch rolls positioned in front of or behind the rows of the first work roll and the second work roll, With respect to the first pinch roll of the pair of pinch rolls, a third pressing portion is provided that is pressed against the first pinch roll on the opposite side of the second pinch roll, With respect to the second pinch roll, a fourth pressing portion is provided that is pressed against the second pinch roll on the opposite side of the first pinch roll, Furthermore, The cleaning member is further passed between the third pressing portion and the first pinch roll, and while sandwiched between the third pressing portion and the first pinch roll, the winding portion winds up the cleaning member or the first pinch roll rotates, causing the first pinch roll to be wiped by the cleaning member. The second cleaning member is further passed between the fourth pressing portion and the second pinch roll, and while sandwiched between the fourth pressing portion and the second pinch roll, the second winding portion winds up the second cleaning member or the second pinch roll rotates, causing the second pinch roll to be wiped by the second cleaning member. The roll leveler according to claim 7.

10. The winding unit repeatedly winds up and unwinds the cleaning member alternately, the unwinding unit unwinds the cleaning member in synchronization with the winding unit's winding and winds up the cleaning member in synchronization with the unwinding unit's unwinding, and the length of the cleaning member wound up by the winding unit in one cycle is greater than the length of the cleaning member wound up by the unwinding unit in one cycle. A roll leveler according to any one of claims 6 to 9.

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