Wiping equipment and rolling equipment

Abstract

This wiping device is for removing liquid from the surface of a metal strip being carried, and includes a wiping member having a flat surface provided so as to be able to contact the surface of the strip, wherein the wiping member is formed of a graphite fiber reinforced resin composite material.

Description

[Technical field]

[0001] The present disclosure relates to a wiping device and a rolling facility. [Background technology]

[0002] In a rolling facility for rolling a metal strip, the rolling is performed while supplying liquid coolant to the rolling rolls. If the coolant remains on the surface of the rolled strip, it can cause a quality problem. Therefore, a wiping device has been proposed for removing liquid such as coolant from the surface of the strip.

[0003] Patent documents 1 and 2 each describe a wiping device including a stationary (contact type) wiper that is arranged downstream of a rolling roll for rolling a metal strip, extending in a direction perpendicular to the conveying direction of the strip and in contact with the surface of the strip. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 1-130808 [Patent Document 2] JP 2019-25532 A Summary of the Invention [Problem to be solved by the invention]

[0005] Compared to roll-type wipers, stationary (contact-type) wipers have the advantage that liquids such as coolant removed from the surface of the strip by the wiper are less likely to scatter around, and that the contact between the wiper and the strip is more likely to be even in the strip width direction, making it less likely that uneven wiping will occur.

[0006] On the other hand, in the case of a stationary wiper, wear is likely to occur due to friction with the strip. For this reason, stationary wipers are generally replaced frequently. In addition, wear of the wiper and wear of the rolling roll and strip during rolling operations can generate wear debris, which can become a mass between the wiper and the strip (rolled material) and damage the surface of the strip. In addition, in order to suppress heat generation and wear due to friction, the contact area between the wiper and the strip is usually set to be small. For this reason, in the case of a wiper made of a hard material, a high surface pressure acts on the contact area between the wiper and the strip, deforming the surface of the wiper and causing unevenness. This causes partial contact between the wiper and the strip, which can cause even higher surface pressure to act on parts of the strip, damaging the surface of the strip.

[0007] In view of the above circumstances, an object of at least one embodiment of the present invention is to provide a wiping device and rolling equipment that are less likely to damage the surface of a metal strip and that can reduce the frequency of replacing a wiping member. [Means for solving the problem]

[0008] A wiping device according to at least one embodiment of the present invention comprises: 1. A wiping device for removing liquid from a surface of a metal strip being conveyed, comprising: a wiping member having a flat surface that is capable of coming into contact with the surface of the band plate; The wiping member is formed from a graphite fiber reinforced resin composite material.

[0009] Further, a rolling apparatus according to at least one embodiment of the present invention includes: a rolling roll for rolling the metal strip; the wiping device provided downstream of the rolling roll in the conveying direction of the strip; Equipped with. Effect of the Invention

[0010] According to at least one embodiment of the present invention, a wiping device and rolling equipment are provided that are less likely to damage the surface of a metal strip and that can reduce the frequency of replacing the wiping member. [Brief description of the drawings]

[0011] [Figure 1] 1 is a schematic diagram of a rolling facility including a wiping device according to an embodiment; [Diagram 2] 2 is a schematic plan view of a wiping device in the rolling facility shown in FIG. 1. [Diagram 3] FIG. 2 is a schematic diagram of a first wiper of a wiping device according to an embodiment. [Figure 4] FIG. 2 is a schematic diagram of a first wiper of a wiping device according to an embodiment. [Diagram 5] FIG. 2 is a schematic diagram of a first wiper of a wiping device according to an embodiment. [Figure 6] FIG. 2 is a schematic diagram of a first wiper and a rubber wiper of the wiping device according to one embodiment. [Figure 7] 2 is a schematic diagram of a nonwoven wiper of a wiping device according to one embodiment. FIG. [Figure 8] FIG. 4 is a schematic diagram of a second wiper of the wiping device according to one embodiment. [Figure 9] FIG. 4 is a schematic diagram of a second wiper of the wiping device according to one embodiment. [Figure 10] 1 is a schematic cross-sectional view of a typical static wiper. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, some embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of components described as the embodiments or shown in the drawings are merely illustrative examples and are not intended to limit the scope of the present invention.

[0013] Fig. 1 is a schematic diagram of a rolling facility including a wiping device according to some embodiments, Fig. 2 is a schematic diagram of the wiping device in the rolling facility shown in Fig. 1 as viewed from above.

[0014] As shown in Fig. 1, a rolling facility 1 according to one embodiment includes a rolling mill 4 including a rolling roll 2 for rolling a strip S of metal (steel, etc.), and a wiping device 10 provided downstream of the rolling roll 2 in the conveying direction of the strip S. As shown in Fig. 1, the rolling facility 1 may include a winding device 8 for winding up the strip S rolled by the rolling roll 2, or may include a guide roll 6 provided between the rolling roll 2 and the winding device 8 for guiding the strip S to the rolling roll 2. The wiping device 10 may be provided between the rolling roll 2 and the winding device 8 in the conveying direction of the strip S.

[0015] In the rolling mill 4, rolling is performed while supplying liquid coolant to the rolling rolls 2. Therefore, the coolant adheres to the surface of the strip S that has passed through the rolling rolls 2. The wiping device 10 is a wiping device for removing liquid such as coolant from the surface of the strip S by wiping it.

[0016] In some embodiments, the wiping device 10 includes a wiping member 12 having a flat surface 14 adapted to contact the surface of the strip S. The wiping member 12 is formed from a graphite fiber reinforced resin composite material.

[0017] In the exemplary embodiment shown in Fig. 1 and Fig. 2, the wiping device 10 includes a first wiper 20 and a second wiper 22 each including the above-mentioned wiping member 12. The wiping member 12 constituting the first wiper 20 has a flat surface 14 provided so as to be able to come into contact with the rolled surfaces Sa, Sb of the strip S. The wiping member 12 constituting the second wiper 22 has a flat surface 14 provided so as to be able to come into contact with an end surface Se of the strip S in the strip width direction. Note that in some embodiments, the wiping device 10 may include only one of the first wiper 20 or the second wiper 22.

[0018] The rolled surfaces Sa, Sb of the strip S refer to the surfaces of the strip S that are rolled by the rolling roll 2 or that have been rolled by the rolling roll 2 (the surfaces that come into contact with the outer peripheral surface of the rolling roll 2). The end surfaces Se of the strip S in the width direction refer to the surfaces of the strip S that connect a pair of rolled surfaces Sa, Sb (the upper rolled surface Sa and the lower rolled surface Sb) of the strip S to each other at both ends of the strip S in the width direction.

[0019] The wiping device 10 may include a pressing unit configured to press the wiping member 12 against the surface of the strip S. By pressing the wiping member 12 against the strip S by the pressing unit, the flat surface 14 of the wiping member 12 can be brought into contact with the surface of the strip S. The pressing unit may include, for example, a hydraulic cylinder or a pneumatic cylinder, or an elastic member such as a spring.

[0020] In a stationary (contact) wiper, heat and wear due to friction with the strip are often significant, and such wipers are generally replaced frequently. In addition, in a conventional stationary (contact) wiper, the contact area between the wiper and the strip is usually set to be small in order to reduce heat and wear due to friction with the strip. For example, in a typical stationary wiper, as shown in FIG. 10, a corner 102 of a wiper 100 having a rectangular cross section is brought into contact with the surface of the strip S to perform wiping. Note that FIG. 10 is a schematic cross-sectional view of a typical stationary wiper 100. In this case, foreign matter 112 such as wear debris of the wiper 100 and metal powder due to wear of the rolling roll or strip that has been mixed into the coolant 110 accumulates in a narrow region 104 (region between the wiper 100 and the strip S) adjacent to the wiper 100 on the upstream side of the wiper 100 and becomes a mass. Such foreign matter 112 may damage the surface of the strip S. Alternatively, in the case of a wiper or the like made of a hard material, when the wiper 100 is pressed against the band plate S by a pressing part or the like, a high surface pressure acts on the contact part (corner 102) of the wiper 100 with the band plate S, which may cause the surface (corner 102) of the wiper 100 to deform and become uneven. This causes the corner 102 of the wiper 100 and the band plate S to come into partial contact, which may cause the surface of the band plate S to be damaged by the application of even higher surface pressure to the part.

[0021] In the above-mentioned embodiment, the wiping member 12 (the member constituting the first wiper 20 and the second wiper 22) is formed from a graphite fiber reinforced resin composite material that has self-lubricating properties and a small coefficient of friction with metal materials, so that heat and wear due to friction between the wiping member 12 and the strip S are unlikely to occur. Therefore, the frequency of replacing the wiping member 12 can be reduced, and wear debris due to wear of the wiping member 12 is unlikely to be generated, so that scratches on the surface of the strip S due to wear debris can be suppressed. In addition, in the above-mentioned embodiment, heat and wear due to friction between the wiping member 12 and the strip S are unlikely to occur, so that the relatively wide flat surface 14 of the wiping member 12 can be brought into contact with the surface of the strip S (rolled surfaces Sa, Sb or end surface Se). In this way, by bringing the relatively wide flat surface 14 of the wiping member 12 into contact with the surface of the band plate S, localized force is unlikely to act on the contact portion between the wiping member 12 and the surface of the band plate S when the wiping member 12 is pressed against the surface of the band plate S, and therefore unevenness is unlikely to be formed on the surface of the wiping member. This makes it possible to suppress partial contact between the surface of the wiping member 12 and the band plate S, and to suppress scratches on the surface of the band plate S due to localized surface pressure that may be generated by such partial contact. Therefore, according to the above-mentioned embodiment, it is difficult to damage the surface of the band plate S when wiping the surface of the metal band plate S, and it is possible to reduce the frequency of replacing the wiping member 12.

[0022] The material of the wiping member 12 is a graphite fiber reinforced polyimide resin composite material (PGFC). The material may include a composite material having a thickness of 100 mm or less and a thickness of 100 mm.

[0023] In this case, since a material containing a graphite fiber reinforced polyimide resin composite material having self-lubricating properties is used as the graphite fiber reinforced resin composite material forming the wiping member 12, it is possible to effectively suppress heat and wear due to friction between the wiping member 12 and the band plate S. Therefore, the surface of the band plate S is unlikely to be damaged when wiping the surface of the band plate S, and the frequency of replacing the wiping member 12 can be reduced.

[0024] 3 to 5 are schematic diagrams of the first wiper 20 of the wiping device 10 according to an embodiment. Of these, Fig. 3 and Fig. 5 are diagrams showing a cross section of the first wiper 20 perpendicular to the plate width direction of the strip S, and Fig. 4 is a plan view of the first wiper 20. Fig. 6 is a schematic diagram of the first wiper 20 and the rubber wiper 24 of the wiping device 10 according to an embodiment, and Fig. 7 is a schematic diagram of the nonwoven fabric wiper 26 of the wiping device 10 according to an embodiment. Figs. 8 and 9 are schematic cross-sectional views of the second wiper 22 of the wiping device 10 according to an embodiment. Note that Figs. 8 and 9 are diagrams showing cross sections of the second wiper 22 at different positions in the conveyance direction of the strip S.

[0025] In some embodiments, as shown in Figures 1, 3 and 6, the first wiper 20 may include a pair of wiping members 12 having flat surfaces 14 arranged to contact the upper rolled surface Sa and the lower rolled surface Sb of the strip S, respectively.

[0026] 3 and 6, the first wiper 20 may include a holding member 30 that holds the wiping member 12. The pressing portion may apply pressing forces F1 and F2 (forces that press the wiping member 12 against the band plate S) to the wiping member 12 via the holding member 30.

[0027] The wiping member 12 of the first wiper 20 shown in FIGS. 1 to 6 is provided so as to extend along the width direction of the strip S.

[0028] In this way, since the wiping member 12 of the first wiper 20 extends along the width direction of the strip S, the liquid on the rolled surfaces Sa, Sb of the strip S transported along the longitudinal direction (conveying direction) of the strip S can be effectively removed by the first wiper 20.

[0029] In some embodiments, for example as shown in FIG. 4, the wiping member 12 of the first wiper 20 is provided so as to extend in a direction inclined with respect to the width direction of the strip S.

[0030] In the above embodiment, the wiping member 12 of the first wiper 20 extends in a direction inclined with respect to the sheet width direction, so that the liquid removed from the surface of the strip S by the wiping member 12 is less likely to accumulate on the upstream side of the wiping member 12 and is more likely to be discharged toward the side in the sheet width direction along the wiping member 12. This can promote the discharge of foreign matter contained in the liquid (solid matter mixed in the coolant (metal powder generated by wear of the rolling rolls or strip, wear debris of the wiping member, etc.)) and more effectively suppress scratches on the surface of the strip S caused by foreign matter.

[0031] In addition, by arranging the wiping member 12 at an incline with respect to the sheet width direction as in the above-mentioned embodiment, the contact area between the wiping member 12 and the strip S is increased compared to the case where the wiping member 12 is arranged so as to extend in the sheet width direction. In this regard, since the wiping member 12 constituting the first wiper 20 is formed from a graphite fiber reinforced resin composite material (a material having self-lubricating properties and a small coefficient of friction with metal materials), even if the contact area between the wiping member 12 and the strip S is increased, the generation of heat and wear due to friction between the wiping member 12 and the strip S can be effectively suppressed. For this reason, as in the above-mentioned embodiment, it is possible to provide the wiping member 12 of the first wiper 20 so as to extend in a direction at an incline with respect to the sheet width direction of the strip S.

[0032] In the above-described embodiment, the inclination angle θ (see FIG. 4) of the extension direction (indicated by a straight line L1 in FIG. 4) of the wiping member 12 of the first wiper 20 with respect to the plate width direction (indicated by a straight line L0 in FIG. 4) may be, for example, 1 degree or more and 45 degrees or less, and more preferably 3 degrees or more and 10 degrees or less. Since the above-described inclination angle θ is 1 degree or more or 3 degrees or more, the liquid remaining on the upstream side of the wiping member 12 can be effectively discharged toward the side in the plate width direction along the wiping member 12. In addition, since the above-described inclination angle θ is 45 degrees or less or 10 degrees or less, the length of the wiping member 12 is unlikely to become excessive, and therefore the wiping device 10 can be prevented from becoming large.

[0033] 5, the wiping member 12 of the first wiper 20 has an upstream side surface 15 connected to the flat surface 14 at an upstream end of the flat surface 14 in the conveyance direction of the strip S. In addition, in a cross section perpendicular to the width direction of the strip S, an angle φ1 between the flat surface 14 and the upstream side surface 15 is greater than 0 degrees and less than 90 degrees.

[0034] In the above embodiment, in a cross section perpendicular to the strip width direction, the angle φ1 between the flat surface 14 and the upstream side surface 15 of the wiping member 12 is greater than 0 degrees and smaller than 90 degrees. That is, in the above cross section, the angle φ2 (see FIG. 5) between the upstream side surface 15 of the wiping member 12 and a portion of the rolled surface of the strip S (rolled surface Sa in FIG. 5) upstream of the wiping member 12 is an obtuse angle. Therefore, compared to when the angle φ2 is 90 degrees or less, liquid and foreign matter contained in the liquid (solid matter mixed in the coolant (metal powder, etc. generated by wear of the rolling roll or strip, wear debris of the wiping member 12, etc.)) are more likely to be discharged from the region between the upstream side surface 15 of the wiping member 12 and the rolled surface of the strip S. Therefore, it is possible to promote the discharge of liquid and foreign matter from the above region, and it is possible to more effectively suppress scratches on the strip surface caused by foreign matter.

[0035] In the embodiment shown in FIG. 3, the above-mentioned angles φ1 and φ2 are approximately 90 degrees.

[0036] As shown in Figs. 1 and 2, the wiping device 10 may include a rubber wiper 24 provided downstream of the first wiper 20 in the conveying direction of the strip S. As shown in Fig. 6, the rubber wiper 24 may include a rubber tube 25 extending along the width direction of the strip S and a holding member 32 for holding the rubber tube 25. The rubber tube 25 is provided so as to be able to come into contact with the rolled surface Sa and / or Sb of the strip S. Note that, as shown in Fig. 6, the holding member 30 for holding the wiping member 12 of the first wiper 20 and the holding member 32 for holding the rubber tube 25 of the rubber wiper 24 may be integrally formed.

[0037] According to the above-mentioned configuration, the rubber wiper 24 including the rubber member (rubber tube 25) capable of contacting the rolled surfaces Sa, Sb is provided downstream of the first wiper 20, so that the liquid that the first wiper 20 was not able to remove from the rolled surfaces Sa, Sb of the strip S can be removed by the rubber wiper 24. Therefore, the liquid can be more reliably removed from the rolled surfaces Sa, Sb of the strip S.

[0038] In addition, since the rubber wiper 24 provided downstream of the first wiper 20 has a role of performing auxiliary wiping, the pressing force (the force pressing the rubber tube 25 against the band plate S) applied to the rubber wiper 24 can be relatively small. Therefore, wear of the rubber wiper 24 due to friction with the band plate S can be suppressed.

[0039] 1 and 2, the wiping device 10 may include a nonwoven fabric wiper 26 provided downstream of the first wiper 20 in the conveying direction of the strip S. Note that, as shown in Figs. 1 and 2, the nonwoven fabric wiper 26 may be provided downstream of the rubber wiper 24 in the conveying direction of the strip S.

[0040] As shown in FIG. 7, the nonwoven wiper 26 includes a core portion 36 extending along the width direction of the strip S, and a nonwoven fabric 34 attached to the periphery of the core portion 36 and capable of contacting the rolled surface of the strip S (rolled surface Sa in FIG. 7). As shown in FIG. 7, the nonwoven wiper 26 may include a holding member 42 for holding the core portion 36. In the exemplary embodiment shown in FIG. 7, the core portion 36 is engaged with an engagement member 40 connected to the holding member 42 via a spring 46. In the exemplary embodiment shown in FIG. 7, the pressing force of the pressing portion (the force pressing the core portion 36 and the nonwoven fabric 34 toward the strip S) acts on the core portion 36 and the nonwoven fabric 34 via the holding member 42 and the spring 46.

[0041] In the above embodiment, the nonwoven fabric wiper 26 including the nonwoven fabric 34 attached around the core portion 36 is provided downstream of the first wiper 20, so that the liquid that the first wiper 20 was not able to remove from the rolled surfaces Sa, Sb of the strip S can be removed by the nonwoven fabric wiper 26. Therefore, the liquid can be more reliably removed from the rolled surfaces Sa, Sb of the strip S.

[0042] In some embodiments, a portion 38 (see FIG. 7) of the core portion 36 adjacent to the nonwoven fabric 34 in the thickness direction of the S-band plate may be made of a graphite fiber reinforced resin composite material. The graphite fiber reinforced resin composite material is a graphite fiber reinforced polyimide resin composite material (PGFC). The material may include a composite material having a thickness of 100 mm or less and a thickness of 100 mm.

[0043] According to the above-described embodiment, of the core portion 36 to which the nonwoven fabric 34 is attached, the portion 38 adjacent to the nonwoven fabric 34 in the thickness direction of the band plate S is made of a graphite fiber reinforced resin composite material. Therefore, even if the nonwoven fabric 34 is torn due to friction with the band plate S or the like and the core portion 36 is exposed, the portion 38 of the core portion 36 made of the graphite fiber reinforced resin composite material comes into contact with the band plate S, so that the band plate S is unlikely to be scratched. Therefore, even when the nonwoven fabric wiper 26 is used, it is possible to effectively prevent the surface of the band plate S from being scratched.

[0044] Of the holding member 42 for holding the core portion 36, a portion 44 (see FIG. 7) including a surface facing the band plate S may be made of a graphite fiber reinforced resin composite material. In this case, even if the holding member 42 and the band plate S come into contact with each other, the band plate S is unlikely to be scratched, and therefore scratches on the surface of the band plate S can be effectively prevented.

[0045] As shown in Figs. 8 and 9, the second wiper 22 has a wiping member 12 that can contact the end surface Se of the strip S in the strip width direction. The second wiper 22 has a flat plate portion 50 that extends along the strip thickness direction of the strip S, and the wiping member 12 of the second wiper 22 is supported by the flat plate portion 50 via a spring 56 (first elastic member; see Fig. 8). The spring 56 corresponds to a pressing portion, and a pressing force F3 (a force pressing the wiping member 12 against the end surface Se) from the pressing portion (spring 56) is applied to the wiping member 12. In the case of equipment that processes only strips S with a substantially constant strip width, the flat plate portion 50 may be fixed and immobile. However, since most equipment needs to process strips S with various strip widths, it is preferable to provide a conveying device (not shown) that can slide the flat plate portion 50 in the strip width direction of the strip S.

[0046] As shown in Figs. 8 and 9, the second wiper 22 may include a clamping portion 51 supported by a flat plate portion 50 and configured to clamp the band plate S in the plate thickness direction. The clamping portion 51 shown in Figs. 8 and 9 includes a pair of clamping members 52, 52 provided on both sides (upper and lower sides of the band plate S) of the band plate S in the plate thickness direction. A spring 58 (second elastic member; see Fig. 9) is provided between the pair of clamping members 52, 52 for applying a biasing force to the pair of clamping members 52, 52 in a direction in which the pair of clamping members move away from each other. An actuator (not shown) is also provided for applying forces F4, F5 to the pair of clamping members 52, 52 in a direction opposite to the biasing force of the spring 58.

[0047] Of the pair of clamping members 52, 52, the portion 54 facing the strip S may be formed from a graphite fiber reinforced resin composite material.

[0048] As described above, the configuration including the second wiper 22 having the flat surface 14 capable of contacting the end surface Se in the width direction of the strip S makes it possible to effectively remove liquid such as coolant adhering to the end surface Se in the width direction of the strip S. In addition, since the wiping member 12 is formed of a graphite fiber reinforced resin composite material that has self-lubricating properties and a small coefficient of friction with metal materials, the end surface Se is unlikely to be damaged when wiping the end surface Se of the strip S, and it is possible to reduce the frequency of replacing the wiping member 12.

[0049] In the above embodiment, the wiping member 12 is pressed against the end face Se of the band plate S by the spring 56 (first elastic member), so that even if the band plate S moves in the plate width direction due to meandering of the band plate S or the like, the wiping member 12 can be made to follow the movement of the band plate S and can maintain a state in which the wiping member 12 is in contact with the end face Se of the band plate S. Therefore, liquid attached to the end face Se of the band plate S in the plate width direction can be more reliably removed.

[0050] In the above embodiment, the clamping portion 51 supported by the flat portion 50 clamps the band plate in the thickness direction, thereby stabilizing the position of the wiping member 12 with respect to the band plate S. This makes it easier for the wiping member 12 to maintain contact with the end face Se of the band plate S, so that liquid adhering to the end face Se of the band plate S in the width direction can be removed more reliably.

[0051] In the above embodiment, the actuator is operated to apply a force to the clamping members 52, 52 that is greater than the biasing force of the spring 58 (second elastic member), thereby making it possible to clamp the band plate S in the thickness direction by the clamping portion 51. The actuator is operated to make the force applied to the clamping members 52, 52 by the actuator smaller than the biasing force of the spring 58 (second elastic member), thereby making it possible to release the clamping of the band plate S by the clamping portion 51.

[0052] In some embodiments, for example as shown in FIGS. 1 and 2, the second wiper 22 is provided downstream of the first wiper 20 in the conveying direction of the strip S.

[0053] According to the above-described embodiment, a second wiper 22 for wiping the end face Se of the strip S in the sheet width direction is provided downstream of the first wiper 20 for wiping the rolled surfaces Sa, Sb of the strip S, so that liquid such as coolant discharged laterally from the rolled surfaces Sa, Sb of the strip S by the first wiper 20 and adhering to the end face Se of the strip S can be effectively removed by the second wiper 22.

[0054] Below, an overview of a wiping device and a rolling installation according to some embodiments will be provided.

[0055] (1) At least one embodiment of the wiping device (10) of the present invention comprises: A wiping device for removing liquid from the surface of a metal strip (S) being conveyed, a wiping member (12) having a flat surface (14) that is capable of contacting the surface of the band plate; The wiping member is formed from a graphite fiber reinforced resin composite material.

[0056] In the above configuration (1), the wiping member is formed from a graphite fiber reinforced resin composite material that has self-lubricating properties and a small coefficient of friction with metal materials, so heat and wear due to friction between the wiping member and the band plate are unlikely to occur. Therefore, the frequency of replacing the wiping member can be reduced, and wear debris due to wear of the wiping member is unlikely to occur, so that scratches on the band plate surface due to wear debris can be suppressed. In addition, in the above configuration (1), heat and wear due to friction between the wiping member and the band plate are unlikely to occur, so that a relatively wide flat surface of the wiping member can be brought into contact with the surface of the band plate. In this way, by bringing the relatively wide flat surface of the wiping member into contact with the surface of the band plate, local forces are unlikely to act on the contact portion between the wiping member and the surface of the band plate when the wiping member is pressed against the surface of the band plate, and therefore unevenness is unlikely to be formed on the surface of the wiping member. Therefore, partial contact between the surface of the wiping member and the band plate is suppressed, and scratches on the surface of the band plate due to local surface pressure that may occur due to such partial contact can be suppressed. Therefore, according to the above configuration (1), the surface of the metal band plate is less likely to be damaged when the surface of the band plate is wiped, and the frequency of replacing the wiping member can be reduced.

[0057] (2) In some embodiments, in the configuration of (1) above, The wiping device is The first wiper (20) includes the wiping member having the flat surface provided so as to be able to come into contact with the rolled surface (Sa, Sb) of the strip.

[0058] In the above configuration (2), the wiping member constituting the first wiper has a flat surface provided to contact the rolled surface of the metal strip. Therefore, according to the above configuration (2), it is possible to obtain a wiping device that is less likely to damage the rolled surface of the metal strip when wiping the rolled surface of the metal strip and that can reduce the frequency of replacing the wiping member.

[0059] In this specification, the surface of the strip that is rolled by the reduction rolls or that has been rolled by the reduction rolls (the surface in contact with the outer circumferential surface of the reduction roll) is referred to as the rolled surface.

[0060] (3) In some embodiments, in the configuration of (2) above, The wiping member of the first wiper extends along the width direction of the band plate.

[0061] According to the above configuration (3), the wiping member of the first wiper extends along the width direction of the strip, so that the first wiper can effectively remove liquid on the rolled surface of the strip transported along the longitudinal direction (conveying direction) of the strip.

[0062] (4) In some embodiments, in the configuration of (2) or (3), The wiping member of the first wiper extends in a direction inclined with respect to the width direction of the band plate.

[0063] In the above configuration (4), the wiping member of the first wiper extends in a direction inclined with respect to the sheet width direction, so that the liquid removed from the surface of the strip by the wiping member and foreign matter contained in the liquid are less likely to remain upstream of the wiping member and are more likely to be discharged toward the side of the strip along the wiping member. Therefore, according to the above configuration (4), it is possible to promote the discharge of foreign matter contained in the liquid (solid matter mixed in the coolant (metal powder generated by wear of the rolling roll or strip, wear debris of the wiping member, etc.)), and it is possible to more effectively prevent scratches on the strip surface caused by foreign matter.

[0064] In addition, by arranging the wiping member at an angle with respect to the sheet width direction as in the configuration of (4) above, the contact area between the wiping member and the strip is increased compared to when the wiping member is arranged to extend in the sheet width direction. In this regard, as described in (1) above, since the wiping member is formed from a graphite fiber reinforced resin composite material (a material that has self-lubricating properties and a small coefficient of friction with metal materials), even if the contact area between the wiping member and the strip is increased, the generation of heat and wear due to friction between the wiping member and the strip can be effectively suppressed. This makes it possible to realize the configuration of (4) above.

[0065] (5) In some embodiments, in any of the configurations (2) to (4) above, The wiping member has an upstream side surface (15) connected to the flat surface at an upstream end of the flat surface in the conveying direction of the strip, In a cross section perpendicular to the width direction of the strip, the angle (θ) between the flat surface and the upstream side surface is greater than 0 degrees and smaller than 90 degrees.

[0066] According to the above configuration (5), in a cross section perpendicular to the strip width direction, the angle between the flat surface of the wiping member and the upstream side surface (hereinafter, angle φ1) is greater than 0 degrees and smaller than 90 degrees. That is, in the above cross section, the angle between the upstream side surface of the wiping member and a portion of the rolled surface of the strip upstream of the wiping member (hereinafter, angle φ2) is an obtuse angle. Therefore, liquid is more likely to be discharged from the region between the upstream side surface of the wiping member and the rolled surface of the strip compared to when the angle φ2 is 90 degrees or less. This can promote the discharge of foreign matter contained in the liquid (solid matter such as metal powder contained in the coolant and generated by wear of the rolling roll or strip, and wear debris of the wiping member) and can more effectively suppress scratches on the strip surface caused by foreign matter.

[0067] (6) In some embodiments, in any of the configurations (2) to (5) above, The wiping device is The apparatus further includes a rubber wiper (24) that is provided downstream of the first wiper in the conveying direction of the strip and includes a rubber member that can come into contact with the rolled surface of the strip.

[0068] According to the above configuration (6), since the rubber wiper including the rubber member capable of contacting the rolled surface is provided downstream of the first wiper, the liquid that the first wiper was unable to remove from the rolled surface of the strip can be removed by the rubber wiper, thereby making it possible to more reliably remove the liquid from the rolled surface of the strip.

[0069] (7) In some embodiments, in any of the configurations (2) to (6) above, The wiping device is a nonwoven fabric wiper (26) provided downstream of the first wiper in the transport direction of the strip, The nonwoven fabric wiper includes a core portion (36) extending along the width direction of the strip, and a nonwoven fabric (34) attached around the core portion and arranged so as to be able to contact the rolled surface of the strip.

[0070] According to the above configuration (7), since the nonwoven fabric wiper including the nonwoven fabric attached around the core portion is provided downstream of the first wiper, the liquid that the first wiper was not able to remove from the rolled surface of the strip can be removed by the nonwoven fabric wiper. Therefore, the liquid can be more reliably removed from the rolled surface of the strip.

[0071] (8) In some embodiments, in the configuration of (7) above, A portion (38) of the core portion adjacent to the nonwoven fabric in the thickness direction of the band plate is made of a graphite fiber reinforced resin composite material.

[0072] According to the above configuration (8), the portion of the core to which the nonwoven fabric is attached that is adjacent to the nonwoven fabric in the thickness direction of the band is made of a graphite fiber reinforced resin composite material. Therefore, even if the nonwoven fabric is torn and the core is exposed, the portion of the core made of the graphite fiber reinforced resin composite material comes into contact with the band, so that the band is unlikely to be scratched. Therefore, even when a nonwoven fabric wiper is used, scratches on the surface of the band can be effectively prevented.

[0073] (9) In some embodiments, in any of the configurations (1) to (8) above, The wiping device is The wiper includes a second wiper (22) including the wiping member having the flat surface provided so as to be capable of coming into contact with an end surface (Se) in the plate width direction of the band plate.

[0074] In the above configuration (9), a second wiper having a flat surface capable of contacting the end face of the band plate in the plate width direction is provided, so that liquid adhering to the end face of the band plate in the plate width direction can be effectively removed. Also, according to the above configuration (9), a wiping device can be obtained that is less likely to damage the end face of the metal band plate in the plate width direction when wiping the end face, and that can reduce the frequency of replacing the wiping member.

[0075] (10) In some embodiments, in the configuration of (9), The wiping device is a first wiper including the wiping member having the flat surface facing the rolled surface of the strip; The second wiper is provided downstream of the first wiper in a transport direction of the band plate.

[0076] According to the above configuration (10), a second wiper for wiping the end face in the width direction of the strip is provided downstream of the first wiper for wiping the rolled surface of the strip, so that the liquid discharged laterally from the rolled surface of the strip by the first wiper and adhering to the end face of the strip can be effectively removed by the second wiper.

[0077] (11) In some embodiments, in any one of the configurations (1) to (10) above, The wiping device is The wiping member is provided with a pressing portion configured to press the wiping member against the surface of the band plate.

[0078] According to the above configuration (11), since the wiping member is pressed against the surface of the band plate by the pressing portion, the wiping member can be brought into reliable contact with the surface of the band plate, thereby making it possible to effectively remove liquid on the surface of the band plate.

[0079] (12) In some embodiments, in any one of the configurations (1) to (11) above, The graphite fiber reinforced resin composite material includes a graphite fiber reinforced polyimide resin composite material.

[0080] According to the above-mentioned configuration (12), since a material containing a graphite fiber reinforced polyimide resin composite material is used as the graphite fiber reinforced resin composite material forming the wiping member, it is possible to effectively suppress heat and wear due to friction between the wiping member and the band plate. Therefore, according to the above-mentioned configuration (12), it is difficult to damage the surface of the metal band plate when wiping the surface of the band plate, and it is possible to reduce the frequency of replacing the wiping member.

[0081] (13) At least one embodiment of the rolling equipment (1) of the present invention comprises: A rolling roll (2) for rolling a metal strip (S); A wiping device (10) according to any one of (1) to (12) above, which is provided downstream of the reduction roll in the conveying direction of the strip; Equipped with.

[0082] In the above configuration (13), the wiping member is formed from a graphite fiber reinforced resin composite material that has self-lubricating properties and a small coefficient of friction with metal materials, so that heat and wear due to friction between the wiping member and the band plate are unlikely to occur. This makes it possible to reduce the frequency of replacement of the wiping member, and since wear debris due to wear of the wiping member is unlikely to occur, damage to the band plate surface due to wear debris can be suppressed. In addition, in the above configuration (13), heat and wear due to friction between the wiping member and the band plate are unlikely to occur, so that a relatively wide flat surface of the wiping member can be brought into contact with the surface of the band plate. In this way, by bringing the relatively wide flat surface of the wiping member into contact with the surface of the band plate, a local force is unlikely to act on the contact portion between the wiping member and the surface of the band plate when the wiping member is pressed against the surface of the band plate, and therefore unevenness is unlikely to be formed on the surface of the wiping member. This suppresses partial contact between the surface of the wiping member and the band plate, and suppresses damage to the surface of the band plate due to local surface pressure that may occur due to such partial contact. Therefore, according to the above configuration (13), the surface of the metal band plate is less likely to be damaged when the surface of the band plate is wiped, and the frequency of replacing the wiping member can be reduced.

[0083] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and also includes modifications to the above-described embodiments and appropriate combinations of these modifications.

[0084] In this specification, expressions expressing relative or absolute configuration, such as "in a certain direction," "along a certain direction," "parallel," "orthogonal," "center," "concentric," or "coaxial," do not only strictly represent such a configuration, but also represent a state in which there is a relative displacement with a tolerance or an angle or distance to the extent that the same function is obtained. For example, expressions indicating that things are in an equal state, such as "identical," "equal," and "homogeneous," not only indicate a state of strict equality, but also indicate a state in which there is a tolerance or a difference to the extent that the same function is obtained. Furthermore, in this specification, expressions describing shapes such as a rectangular shape or a cylindrical shape do not only refer to shapes such as a rectangular shape or a cylindrical shape in the strict geometric sense, but also refer to shapes that include uneven portions, chamfered portions, etc., to the extent that the same effect is obtained. In addition, in this specification, the expressions "comprise," "include," or "have" a certain element are not exclusive expressions that exclude the presence of other elements. [Explanation of symbols]

[0085] 1. Rolling equipment 2. Rolling 4. Rolling mill 6 Guide Roll 8 Winding device 10 Wiping device 12 Wiping member 14 Flat surface 15 Upstream side 20 First wiper 22 Second wiper 24 Rubber wiper 25 Rubber tube 26 Non-woven wipes 30 Retaining member 32 Retaining member 34 Nonwoven fabrics 36 Core 38 parts 40 Engagement member 42 Retaining member 44 parts 46 Spring 50 Flat plate part 51 Clamping part 52 Clamping member 54 parts 56 Spring 58 Spring 100 Wiper 102 Corner 104 areas S strip Sa Rolled surface Sb Rolled surface Se end face

Claims

1. 1. A wiping device for removing liquid from a surface of a metal strip being conveyed, comprising: a wiping member having a flat surface that is capable of coming into contact with the surface of the band plate; The wiping member is formed from a graphite fiber reinforced resin composite material, the wiping member has an upstream side surface connected to the flat surface at an upstream end of the flat surface in a conveyance direction of the band plate, In a cross section perpendicular to the width direction of the strip, the angle between the flat surface and the upstream side surface is greater than 0 degrees and smaller than 90 degrees. Wiping device.

2. The wiping member extends along the plate width direction of the band plate in a plan view. The wiping device according to claim 1 .

3. The wiping member extends in a direction inclined with respect to the plate width direction of the band plate in a plan view. The wiping device according to claim 2 .

4. a rubber wiper provided downstream of the wiping member in the conveying direction of the strip and including a rubber member capable of contacting the surface of the strip; A wiping device according to any one of claims 1 to 3.

5. a nonwoven fabric wiper provided downstream of the wiping member in the conveying direction of the band plate, The nonwoven fabric wiper includes a core portion extending along the plate width direction of the band plate, and a nonwoven fabric attached to the periphery of the core portion and capable of contacting the surface of the band plate. A wiping device according to any one of the preceding claims.

6. A wiping device for removing liquid from a surface of a metal strip being conveyed, comprising: a wiping member having a flat surface that is capable of coming into contact with the surface of the band plate; The wiping member is formed from a graphite fiber reinforced resin composite material, a nonwoven fabric wiper provided downstream of the wiping member in the conveying direction of the band plate, The nonwoven fabric wiper includes a core portion extending along the plate width direction of the band plate, and a nonwoven fabric attached to a periphery of the core portion and capable of contacting the surface of the band plate, The core portion is adjacent to the nonwoven fabric in the thickness direction of the band plate and is made of a graphite fiber reinforced resin composite material. Wiping device.

7. A wiping device for removing liquid from a surface of a metal strip being conveyed, comprising: a wiping member having a flat surface that is capable of coming into contact with the surface of the band plate; The wiping member is formed from a graphite fiber reinforced resin composite material, a second wiper including the wiping member having the flat surface provided so as to be capable of contacting the end surface of the strip in the plate width direction; Wiping device.

8. a first wiper including the wiping member having the flat surface facing the rolled surface of the strip; The second wiper is provided downstream of the first wiper in a conveying direction of the strip. The wiping device according to claim 7.

9. A wiping device for removing liquid from a surface of a metal strip being conveyed, comprising: a wiping member having a flat surface that is capable of coming into contact with the surface of the band plate; The wiping member is formed from a graphite fiber reinforced resin composite material, A pressing portion configured to press the wiping member against the surface of the band plate is provided. Wiping device.

10. A wiping device for removing liquid from a surface of a conveyed metal strip, comprising: a wiping member having a flat surface that is capable of coming into contact with the surface of the band plate; The wiping member is formed from a graphite fiber reinforced resin composite material, The graphite fiber reinforced resin composite material includes a graphite fiber reinforced polyimide resin composite material. Wiping device.

11. a rolling roll for rolling the metal strip; The wiping device according to any one of claims 1 to 10, which is provided downstream of the reduction roll in a conveying direction of the strip; The rolling equipment includes:

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