JP2011037501A - Bundling method of steel belt and sleeve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bundling method of a steel belt and a sleeve which can firmly bundle the steel belt even if the width of the steel belt is narrower than that of the sleeve in the case that the steel belt is rolled up on the sleeve. <P>SOLUTION: A hoop 15 is passed through a groove 24 with the sleeve 14 having the steel belt 11 rolled up thereon. Then, the hoop 15 approaches both steel belt's side faces 31 by inflecting the hoop 15 at respective boundaries between the steel belt's inner curved surface 30 positioned inside the laminating direction of the steel belt 11 and respective side faces 31 positioned at both the two opposite sides along the center axis direction. Then, at boundaries between the respective side faces 31 of the steel belt and the steel belt's outer curved surface 32 positioned at the outside of the laminating direction of the steel belt 11, the hoop 15 is inflected so that it may approach the steel belt's outer curved surface 32, and thereby the hoop 15 is wound around the steel belt 11 so that the hoop 15 may be brought to be formed into an approximately rectangular shape of a frame. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for bundling a steel strip wound around a sleeve by a rolling device and a sleeve suitable for use in the bundling method for the steel strip.

  In the cold rolling process, the steel strip is rolled with a rolling device while applying tension to the steel strip by winding the steel strip with a tension reel. The steel strip wound around the tension reel in a cylindrical shape needs to be bundled so that the diameter does not widen or shifts in the width direction so that handling in the subsequent process becomes difficult. As a method of binding steel strips, a method of binding steel strips with hoops that pass through the inside and outside of a cylindrical steel strip is known (see Patent Document 1).

  However, if the inside of the cylindrical steel strip is hollow as in Patent Document 1, the steel strip can be bound directly with a hoop, but the interior of the steel strip after rolling is not necessarily hollow. For example, a method may be adopted in which a cylindrical sleeve is attached to a tension reel and the steel strip is wound around a sleeve that rotates with the tension reel for various reasons such as preventing the steel strip from being damaged. Yes (see Patent Document 2).

JP 2004-10083 A Japanese Patent Laid-Open No. 9-76012

  The width of the steel strip rolled by the rolling device is not necessarily constant and often varies depending on the product specifications. When a sleeve having the same width as the steel strip is used, it is necessary to prepare a large number of sleeves having different widths, and replacement and management become complicated. Therefore, it is required to use a sleeve having a constant width regardless of the width of the steel strip. However, when a bundling method in which a hoop is passed inside a cylindrical steel strip as in Patent Document 2, if the width of the steel strip is narrower than the width of the sleeve, the hoop contacts only the outer peripheral curved surface of the steel strip and the inner surface of the sleeve. And since it does not contact the side of a steel strip, a steel strip becomes easy to shift. Furthermore, the hoop that is slanted from the inner surface of the sleeve to the outer peripheral curved surface of the steel strip is rubbed in point contact with the corner of the steel strip or the sleeve, so that there is a problem that the hoop is easily cut at the bent portion of the corner. .

  An object of the present invention is to provide a method of binding a steel strip and a sleeve capable of firmly binding the steel strip even when the width of the steel strip is narrower than the width of the sleeve when the steel strip is wound around the sleeve. And

  The first steel strip bundling method of the present invention is a reel that winds up a rolled steel strip with the sleeve having a substantially cylindrical shape and having a through groove formed along the axial direction of the cylindrical shape on the outer peripheral curved surface. The steel strip that is fitted from the outside, rotates the sleeve together with the reel, winds the steel strip around the outer peripheral curved surface, and binds the substantially cylindrical steel strip wound around the sleeve with a long binding member In the method of bundling the steel strip, the step of passing the bundling member through the through groove in a state where the steel strip is wound around the sleeve, the inner curved surface located on the inner side in the stacking direction of the steel strip, and both axial sides Bending the binding member at each boundary with each annular side surface of the steel strip located at a position close to the both annular side surfaces of the steel strip, and laminating each annular side surface of the steel strip and the steel strip At each boundary with the outer curved surface located outside There the binding member is bent so as to approach to the outer curved surface, comprising a binding member so that the binding member is substantially rectangular frame shape and a step of turning around the strip.

  According to the first method for binding steel strips, the steel strips can be firmly bound by bringing the binding member close to the steel strip even when the steel strip is wound around the sleeve. In particular, even if the width of the sleeve and the width of the steel strip in the axial direction are different, the steel strip can be firmly bound by bringing the binding member close to the steel strip. Further, since the binding member is wound in a substantially rectangular shape along the inner curved surface of the steel strip, both annular side surfaces and the outer curved surface, the boundary corner between the inner curved surface and the side surface of the steel strip, the outer curved surface of the steel strip Since the bundling member does not come into point contact at the boundary corner portion between the sleeve and the side surface, and at the outer peripheral edge portions of both axial end faces of the sleeve, the boundary corner portion or sleeve of the steel strip is compared with the case where it is bridged diagonally. There is less risk of the binding member being cut at the outer peripheral edge. Furthermore, by using the same sleeve for a plurality of types of steel strips having different widths, the working efficiency can be improved and the management of the sleeve can be facilitated. Furthermore, since the steel strip can be firmly fixed without removing the steel strip from the sleeve, work efficiency can be improved and the steel strip can be bound while preventing deformation of the steel strip by the sleeve. it can. Furthermore, the steel strip can be bundled in either the state where the sleeve is fitted into the reel or the state where the sleeve is removed from the reel. Furthermore, since the binding member is located in the through groove, it is possible to prevent the binding member from being displaced along the inner curved surface of the steel strip during binding.

  In the second method of bundling a steel strip according to the present invention, a step of inserting a groove filling member into a through groove before winding the steel strip around the sleeve in the bundling method of the first steel strip, and winding the steel strip around the sleeve And a step of removing the groove filling member later.

  According to the method for binding the second steel strip, deformation of the inner curved surface during rolling can be prevented. The groove filling member preferably has such a shape that the outer peripheral curved surface of the sleeve is substantially a cylinder so that deformation of the steel strip can be prevented.

  The sleeve of the present invention is fitted from the outside to a reel that winds up a rolled steel strip, rotates together with the reel, winds the steel strip on an outer peripheral curved surface, and winds the rolled steel strip into a long binding member. A substantially cylindrical sleeve positioned inside the steel strip when being bound by a through-groove formed along the axial direction of the substantially cylindrical shape on a substantially cylindrical outer peripheral curved surface, Is provided with the through groove formed in a shape that allows the bundling member to pass therethrough.

  According to the sleeve of the present invention, even when the steel strip is wound around the sleeve, the binding member can be brought close to the steel strip to firmly bind the steel strip. In particular, even if the width of the sleeve and the width of the steel strip in the axial direction are different, the steel strip can be firmly bound by bringing the binding member close to the steel strip. Further, since the binding member is wound in a substantially rectangular shape along the inner curved surface of the steel strip, both annular side surfaces and the outer curved surface, the boundary corner between the inner curved surface and the side surface of the steel strip, the outer curved surface of the steel strip Since the bundling member does not come into point contact at the boundary corner portion between the sleeve and the side surface, and at the outer peripheral edge portions of both axial end faces of the sleeve, the boundary corner portion or sleeve of the steel strip is compared with the case where it is bridged diagonally. There is less risk of the binding member being cut at the outer peripheral edge. Furthermore, by using the same sleeve for a plurality of types of steel strips having different widths, the working efficiency can be improved and the management of the sleeve can be facilitated. Furthermore, since the steel strip can be firmly fixed without removing the steel strip from the sleeve, work efficiency can be improved and the steel strip can be bound while preventing deformation of the steel strip by the sleeve. it can. Furthermore, the steel strip can be bundled in either the state where the sleeve is fitted into the reel or the state where the sleeve is removed from the reel. Furthermore, since the binding member is located in the through groove, it is possible to prevent the binding member from being displaced along the inner curved surface of the steel strip during binding.

  According to the present invention, when a steel strip is wound around a sleeve, the steel strip can be firmly bound even if the width of the steel strip is narrower than the width of the sleeve.

FIG. 1 is a diagram showing a schematic configuration of the rolling apparatus of the present embodiment. FIG. 2 is a diagram for explaining a method for binding steel strips. FIG. 3 is a perspective view of the clasp.

  FIG. 1 is a schematic configuration diagram of a rolling device 1 that rolls steel strips bound by the steel strip binding method of the present embodiment. The rolling device 1 is a cold reverse rolling device, and rolls a steel strip 11 wound around a pay-out reel 10 on a take-up reel 12 in a multi-stage mill type rolling stand 13. When the steel strip 11 has been wound on the take-up reel 12, the take-up reel 12 and the payout reel 10 are reversely rotated to switch roles. That is, the steel strip 11 is paid out from the take-up reel 12 and rolled on the rolling stand 13 while being taken up on the pay-out reel 10. Each time the rolling direction of the steel strip 11 is changed and rolled, the width of the steel strip 11 changes. The rolling of the steel strip 11 is repeated until the steel strip 11 has a desired shape. The rolling device 1 is merely an example, and the application target of the steel strip bundling method of the present embodiment is not limited to the steel strip 11 rolled by the rolling device 1.

  As shown in FIG. 1, substantially cylindrical sleeves 14 are attached to the outer circumferences of the substantially cylindrical discharge reel 10 and the take-up reel 12, respectively. The steel strip 11 is not wound directly around the pay-out reel 10 and the take-up reel 12 but is wound around a sleeve 14 that rotates together with the pay-out reel 10 and the take-up reel 12. The sleeve 14 may be formed of a material that is easily deformed, such as resin, or may be formed of a material that is not easily deformed, such as metal.

  FIG. 2A is a perspective view of the sleeve 14. The sleeve 14 has a substantially cylindrical shape with a thick wall and has a virtual center axis along a predetermined direction. The sleeve 14 is an outer peripheral curved surface that extends around the central axis from the outer peripheral edge of the one end surface 20 to the outer peripheral edge of the other end surface 21 around the central axis and the one end surface 20 and the other end surface 21 of the donut disk that are orthogonal to each other in a predetermined direction. 22. It has an inner peripheral curved surface 23 surrounding the central axis and extending along the central axis from the inner peripheral edge of the one end face 20 to the inner peripheral edge of the other end face 21. The outer peripheral curved surface 22 is formed with three grooves 24 that are recessed toward the inner peripheral curved surface 23. Each groove 24 is connected from the outer peripheral edge of the one end face 20 to the outer peripheral edge of the other end face 21 along the central axis. All three grooves 24 have the same shape. The outer peripheral curved surface 22 is formed with a grip 25 that is recessed in a slit shape toward the inner peripheral curved surface 23. The grip 25 is connected from the outer peripheral edge of the one end surface 20 to the outer peripheral edge of the other end surface 21 along the central axis. The width of the sleeve 14 in the central axis direction is formed to be longer than the width of the steel strip 11 in the central axis direction. Hereinafter, the width of the sleeve 14 and the width of the steel strip 11 indicate the length in the central axis direction.

  FIG. 2B is a cross-sectional view of the sleeve 14 taken along a plane orthogonal to the central axis. In the present embodiment, the cross section of the sleeve 14 by an arbitrary plane orthogonal to the central axis is always a constant shape. When the central axis is horizontal and one groove 24 is positioned at the top, the groove 24 has a bottom surface 26 along the horizontal plane and a side surface 27 along the plane including the direction of the central axis and the vertical direction. . The width of the bottom surface 26 of the groove 24 is formed to be longer than the height of each side surface 27 in the cross section. The three grooves 24 are arranged at equal intervals along the cross-sectional circumference. That is, the angle between the virtual straight lines drawn from the central axis to the center of each groove 24 is 120 degrees. The grip 25 has a function of sandwiching and fixing the tip of the steel strip 11 during rolling, and is formed such that the inner depth is longer than the opening width along the cross-sectional circumference of the outer peripheral curved surface 22. Since the depth direction of the grip 25 is slightly deviated from the radial direction, when the steel strip 11 is wound from the grip 25 in the counterclockwise direction along the outer peripheral curved surface 22, the bending amount of the steel strip 11 is reduced to reduce the grip 25. The amount of swelling of the steel strip 11 in the opening can be suppressed.

  FIGS. 2C to 2E are perspective views for explaining a method of binding the steel strip 11 pulled out from the take-up reel 12 together with the sleeve 14. The steel strip 11 may be bound by a binding device or may be bound by an operator.

  As shown in FIG. 2C, the rolled steel strip 11 is wound around the outer peripheral curved surface 22 of the sleeve 14 at the center in the central axis direction. Since the width of the steel strip 11 is narrower than the width of the sleeve 14, both sides in the central axis direction of the outer peripheral curved surface 22 of the sleeve 14 are exposed to the outside. The hoop 15 that binds the steel strip 11 is a long strip-shaped metal member, and the cross section orthogonal to the longitudinal direction has a flat rectangular shape. The bundling member for bundling the steel strip 11 is preferably a metal hoop 15 that can be firmly fixed, but may be other bundling members. The groove | channel 24 should just be formed in the magnitude | size which can pass the hoop 15 in the state which wound the steel strip 11 around the sleeve 14. FIG. Hereinafter, the steel strip 11 wound up in a thick cylindrical shape is regarded as one body, and the curved surface of the steel strip 11 facing the sleeve 14 on the radially inner side is referred to as a steel strip inner curved surface 30 and is formed on both sides in the central axis direction. Each annular side surface of the steel strip 11 is referred to as a steel strip side surface 31, and the curved surface exposed to the outside in the radial direction is referred to as a steel strip outer curved surface 32.

  A method for binding the steel strip 11 while being wound around the sleeve 14 will be described. First, as shown in FIG. 2C, the hoop 15 is passed along the groove 24 so as to pass between the sleeve 14 and the steel strip inner curved surface 30 in contact with the sleeve 14. Next, as shown in FIG. 2 (d), the hoop 15 protruding outward from the steel strip side surface 31 is bent at a right angle at each boundary corner portion between the steel strip inner curved surface 30 and each steel strip side surface 31. The folded hoop 15 is disposed close to each side surface 31 of the steel strip along the radial direction. Next, as shown in FIG. 2 (e), the hoop 15 protruding radially outward from the steel strip outer curved surface 32 is bent at a right angle at each boundary corner between each steel strip side surface 31 and the steel strip outer curved surface 32. . The bent hoop 15 is disposed close to the outer surface 32 of the steel strip along the central axis direction. Next, both ends of the hoop 15 are overlapped, and the overlapped hoop 15 is firmly sandwiched and fixed by the stopper 16.

  3A and 3B are perspective views of the clasp 16. The clasp 16 immediately after being formed by punching a metal material is a plate-like member having a main body portion 40 and four foot portions 41 as shown in FIG. 3A, and is integrally formed in the same plane. Has been. The main body 40 has a substantially rectangular shape. Two leg portions 41 are formed so as to protrude from each of two opposing linear outer edge portions of the main body portion 40. As shown in FIG. 3B, the clasp 16 is bent in advance at the outer edge portion of the main body 40 so that the legs 41 of the clasp 16 overlap the main body 40. When the hoop 15 is fixed with the clasp 16, both ends of the hoop 15 are inserted and overlapped between the main body portion 40 and the four foot portions 41, and each foot portion 41 is strongly pressed toward the main body portion 40. The hoop 15 is fixed between the main body portion 40 and each foot portion 41.

  2 (c) to 2 (e) are repeated, and the steel strip 11 is passed through the hoop 15 through the three grooves 24 as shown in the side view of the sleeve 14 and the steel strip 11 in FIG. Unite. Each hoop 15 has a substantially rectangular frame shape, and is wound around a path that is in close contact with the steel strip 11. The number of steel strips 11 bound by the hoop 15 is not limited to three. Although it may be less or more than 3, it is preferable that the hoops 15 are arranged at equal intervals in order to prevent deformation of the steel strip 11.

  According to the steel strip bundling method of the present embodiment, the steel strip 11 can be firmly bound by bringing the hoop 15 close to the steel strip 11 even when the steel strip 11 is wound around the sleeve 14. If the hoop 15 is bound to the sleeve 14 and the steel strip 11 through the inside of the inner circumferential curved surface 23 of the sleeve 14, the hoop 15 is inclined from the one end surface 20 and the other end surface 21 of the sleeve 14 toward the outer steel strip curved surface 32. Therefore, the hoop 15 does not approach the steel strip side surface 31 and the steel strip 11 is likely to be displaced. In particular, the larger the difference between the width of the sleeve 14 and the width of the steel strip 11, the easier it is to shift. However, if the sleeve 14 of this embodiment is used, even if the width of the sleeve 14 and the width of the steel strip 11 are different, the hoop 15 can be brought close to the steel strip 11 to firmly bind the steel strip 11. . Further, since the hoop 15 is wound in a substantially rectangular shape along the surfaces of the steel strip inner curved surface 30, both steel strip side surfaces 31 and the steel strip outer curved surface 32, the boundary between the steel strip inner curved surface 30 and the steel strip side surface 31. Since the hoop 15 does not make point contact at the corner, the boundary corner between the outer surface 32 of the steel strip 32 and the side surface 31 of the steel strip, and the outer peripheral edge of the one end surface 20 and the other end surface 21 of the sleeve 14, Compared to the case of passing, the possibility that the hoop 15 is cut at the boundary corner portion of the steel strip 11 or the outer peripheral edge portion of the sleeve 14 is reduced. In the rolling apparatus 1 as in the present embodiment, the rolling conditions are different for each product, so the target width of the steel strip 11 is not constant. Therefore, by using the same sleeve 14 for a plurality of types of steel strips 11 having different widths, work efficiency can be improved and management of the sleeve 14 can be facilitated. Furthermore, since the steel strip 11 can be firmly fixed without removing the steel strip 11 from the sleeve 14, the work efficiency can be improved and the steel strip 11 can be prevented from being deformed by the sleeve 14. 11 can be bundled. Further, since each groove 24 is formed along the central axis direction, the hoop 15 can be wound in a rectangular frame shape by the shortest path. Furthermore, since the sleeve 14 has the groove 24 and the grip 25, the function of strengthening the binding of the steel strip 11 and the function of fixing the tip of the steel strip 11 can be realized by the single sleeve 14. Further, since the groove 24 is connected from the one end surface 20 to the other end surface 21 along the central axis direction, the sleeve 14 can be pulled out in the central axis direction while the steel strip 11 is bound by the hoop 15. The band 11 can be easily separated. Furthermore, the steel strip 11 can be bundled in any of the state where the sleeve 14 is fitted into the payout reel 10 or the take-up reel 12 and the state where the sleeve 14 is detached from the payout reel 10 or the take-up reel 12. it can. Furthermore, since the hoop 15 is located between the side surfaces 27 of the groove 24, it is possible to prevent the hoop 15 from being displaced along the curved surface 30 in the steel strip during binding. Since the hoop 15 is difficult to be displaced close to the steel strip 11, the clasp 16 can firmly fix the hoop 15 with a weaker force than when the hoop 15 is separated from the steel strip 11. .

  In the present embodiment, the groove 24 is left hollow during rolling, but in order to prevent deformation of the curved surface 30 in the steel strip, a rod-shaped groove filling member is fitted into the groove 24 so that the outer peripheral curved surface 22 has a smooth cylindrical shape. And may be removed after rolling. Moreover, although the groove | channel 24 is connected from the one end surface 20 to the other end surface 21, the groove | channel 24 should just be formed longer than the width | variety of the steel strip 11 at least. The groove 24 may be connected to only one of the one end face 20 and the other end face 21, or may not be connected to either the one end face 20 or the other end face 21. Since the groove 24 has a shape that is not connected to the one end face 20 or the other end face 21, the shape deformation of the sleeve 14 can be prevented.

  The present invention is not limited to sleeves used in cold rolling apparatuses and reverse rolling apparatuses, but can be applied to sleeves used in various rolling apparatuses.

DESCRIPTION OF SYMBOLS 1 Rolling apparatus 10 Discharge reel 11 Steel strip 12 Take-up reel 13 Rolling stand 14 Sleeve 15 Hoop 16 Clasp 20 One end surface 21 Other end surface 22 Outer curved surface 23 Inner curved surface 24 Groove 25 Grip 26 Bottom surface 27 Side 30 Steel strip inner curved surface 31 Steel strip side surface 32 Steel strip outer curved surface 40 Body portion 41 Foot portion

Claims (3)

The sleeve, which has a substantially cylindrical shape and has a through groove formed along the axial direction of the cylindrical shape on the outer peripheral curved surface, is fitted from the outside to a reel that winds a rolled steel strip, and the sleeve is rotated together with the reel. The steel strip is wound around the outer peripheral curved surface, and the steel strip is bound to a substantially cylindrical steel strip wound around the sleeve with a long binding member,
Passing the binding member through the through groove in a state where the steel strip is wound around the sleeve;
The binding member is bent at both boundaries of the steel strip by bending the binding member at each boundary between the inner curved surface located inside the steel strip in the stacking direction and the annular side surfaces of the steel strip located on both sides in the axial direction. A step of approaching the annular side surface;
The binding member is bent so as to be close to the outer curved surface at each boundary between the annular side surface of the steel strip and the outer curved surface located on the outer side in the stacking direction of the steel strip, and the binding member has a substantially rectangular frame shape. A step of winding the bundling member around the steel strip so that Inserting a groove filling member into the through groove before winding the steel strip around the sleeve;
The method for binding steel strips according to claim 1, comprising: removing the groove filling member after winding the steel strip around the sleeve. When the rolled steel strip is fitted from the outside to the reel that winds up, the steel strip is wound around the outer peripheral curved surface by rotating with the reel, and the wound steel strip is bound by a long binding member. A substantially cylindrical sleeve located inside the steel strip,
A through groove formed along the axial direction of the substantially cylindrical shape on the outer peripheral curved surface of the substantially cylindrical shape, and formed into a shape that allows the binding member to pass through in a state where the steel strip is wound. Provided with the through groove,
sleeve.