EP2517800A1 - Dispositif anti-désalignement pour plaques de bande fendues - Google Patents

Dispositif anti-désalignement pour plaques de bande fendues Download PDF

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Publication number
EP2517800A1
EP2517800A1 EP10839613A EP10839613A EP2517800A1 EP 2517800 A1 EP2517800 A1 EP 2517800A1 EP 10839613 A EP10839613 A EP 10839613A EP 10839613 A EP10839613 A EP 10839613A EP 2517800 A1 EP2517800 A1 EP 2517800A1
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EP
European Patent Office
Prior art keywords
strip
center
slit
roll
guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10839613A
Other languages
German (de)
English (en)
Other versions
EP2517800A4 (fr
EP2517800B1 (fr
Inventor
Koji Yamashita
Tadashi Nara
Seishi Hatakeyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
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JFE Steel Corp
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Filing date
Publication date
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Publication of EP2517800A4 publication Critical patent/EP2517800A4/fr
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Publication of EP2517800B1 publication Critical patent/EP2517800B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/006—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only winding-up or winding-off several parallel metal bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/26—Special arrangements with regard to simultaneous or subsequent treatment of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B21B2015/0021—Cutting or shearing the product in the rolling direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0057—Coiling the rolled product

Definitions

  • the present invention relates to apparatuses to prevent strip walking of slit strips (strips that are slit, also called slit materials), and more particularly, to an apparatus to prevent strip walking used to stably pass a strip by suppressing strip walking and stably coil the strip while avoiding formation of a telescoped coiled strip.
  • the present invention is particularly advantageous when a leading end or a tail end of a strip, at which tension decreases, is passed.
  • the tension decreases in, for example, the following cases. That is, on a conveying table roller between a finishing mill and a coiler in a hot rolling line of a steel strip, the tension is low in periods before the leading end of the steel strip reaches the coiler and after the tail end of the steel strip leaves the finishing mill.
  • the tension decreases when the steel strip is subjected to shear cutting immediately before coiling is finished.
  • the strips to which the present invention may be applied include metal strips, such as steel strips, and sheet-shaped plastic films.
  • nip means a contact zone in which a conveying roll (including a pinch roll) is in contact with a strip that is being passed.
  • skew angle means a roll skew angle at which rolls are skewed outward or inward with respect to a strip conveying direction. A skew angle at which the rolls are skewed outward is called an outward skew angle, and a skew angle at which the rolls are skewed inward (see Fig. 3 ) is called an inward skew angle.
  • a slitter is arranged at an entrance side of a coiler in a recoiling line, and a rolled strip having a large width is divided into separate strips in a strip width direction. The thus-obtained separate strips are coiled individually.
  • a slit line is arranged at an entrance side of a coiler in a recoiling line, and a rolled strip having a large width is divided into separate strips in a strip width direction. The thus-obtained separate strips are coiled individually.
  • a strip S that has been fed is trimmed by side trimmers at the sides thereof in a strip width direction, and is cut by a slitter at a central position thereof in the strip width direction so that the strip S is divided into two slit materials S1 and S2.
  • the slit materials S1 and S2 are caused to pass a deflector roll and coiled by a single coiler while a slit gap is maintained by separator disks.
  • EPC edge position control
  • the two slit materials S1 and S2 are individually coiled by respective coilers.
  • the positions of the sides (edges) of the slit materials S1 and S2 in the strip width direction immediately before the slit materials S1 and S2 are coiled are detected by respective edge sensors.
  • the slit gap is adjusted by moving coiling shafts in the respective coilers in the strip width direction in accordance with the amounts of movement of the edges. Thus, the operation speed of the line can be increased.
  • This apparatus includes a single coiler and left and right skew rolls that are respectively in contact with the two slit materials S1 and S2.
  • the left and right skew rolls are arranged to have the same skew angle, and the skew angle is varied such that a detection value obtained by a slit gap detector approaches a desired value.
  • the slit gap is adjusted and maintained so as to achieve an excellent coiling appearance that edge becomes complete.
  • each of a plurality of slit materials is provided with a pinch roll that is located between a slitter and a tension reel (coiler) and that is capable of performing a biased pinch adjustment. Owing to the biased pinch adjustment, the slit materials are guided in a direction away from the line center. When biased pinch (partial pinch) is applied to each slit material in an area near the line center, rotation moment is generated in a direction such that the slit gap increases.
  • the slit gap varies in accordance with the properties of the slit materials S1 and S2, sufficient adjustment cannot be made by the separator disks. As a result, there is a possibility that the slit gap will decrease and strip side portions at both sides of the slit gap will be deformed by being pressed against the separator disks. In addition, there is also a possibility that the slit gap will increase and a coiling failure, a non-uniform edge alignment, etc., will occur. As a result, the line speed cannot be increased and the operation must be performed at a low speed. In addition, at the separator disks, the slit materials are not retained by rolls or the like in the vertical direction. Therefore, if the strip side portions at both sides of the slit gap come into contact with the separator disks, the slit materials will be bent in the vertical direction and the strip side portions will be damaged.
  • a side guide SG is inserted in an area between roll pitches (between nips) of conveying rolls 10. Therefore, the side portion of the strip in the strip width direction is easily damaged in a contact width area in which the strip S is not supported. Therefore, in the case where the strip is restrained by the side guide, accurate position control must be performed in accordance with the strip width. In particular, when the strip thickness is small, accurate pressure control must be performed.
  • the slit strips cannot be stabilized at the central area of a conveyance line without damaging the edges of the strips or using a complex control system.
  • a mechanical mechanism to prevent strip walking that is independent of external control is used.
  • the present invention aims at a mechanical mechanism to prevent strip walking that can be easily adjusted, that can be used for both slit materials and normal strips (strips that are not slit), and in which the two usage patterns can be automatically or easily switched.
  • An apparatus to prevent strip walking which passes at least one slit strip, which is obtained by slitting a single full-width strip into two strips in a conveyance line, with a pinch roll, wherein the pinch roll includes a lower roll that supports a bottom surface of the slit strip and upper rolls that are separated from each other in a strip width direction, at least one of the upper rolls coming into contact with a top surface of the slit strip and moving the slit strip toward a line center by using outside biased pinch or an inward skew angle, wherein a portion of the slit strip around a line-center-side edge of the slit strip is nipped by the lower roll and the at least one of the upper rolls that are separated from each other or by the lower roll and a center roll provided at a line center area near separation ends of the upper rolls that are separated from each other, and wherein the apparatus to prevent strip walking comprises a center guide that guides the line-center-side edge of
  • the center guide used in the present invention is a guide disposed at the slit cut side. Therefore, it is also not necessary to perform, for example, position control in accordance with the strip width.
  • sufficient strip rigidity can be easily ensured and damage does not easily occur on the edge of the strip.
  • the strip can be easily passed in a stable state according to the present invention.
  • the slit materials and the normal strips can both be passed, and switching between the slit materials and the normal strips can be easily performed.
  • Strip walking of slit materials is not controlled (feedback-controlled). Instead, the slit materials are mechanically moved toward the line center.
  • a method for mechanically moving the slit materials toward the line center a method based on an outside biased pinch or a method based on an inward skew angle may be used.
  • an upper roll included in a pinch roll is divided into separate rolls in a strip width direction, and a tiered roll, in which an outside pinch width is larger than an inside pinch width, is used as each of the separate rolls.
  • the separate rolls are skewed inward with respect to a strip conveying direction.
  • a frictional force applied between the pinch roll and the strips in the outside pinch areas is larger than that in the inside pinch areas. Therefore, moments that try to rotate the slit materials toward the line center are generated, and the slit materials are mechanically moved toward the line center.
  • roll circumferential speed components that are oriented inward toward the line center are transmitted to the slit materials. Therefore, the slit materials are mechanically moved toward the line center (in other words, centered).
  • a location near the nip corresponds to a range on a strip surface in which an angle of a line of site from the roll center to the strip surface with respect to the normal line in a plane orthogonal to a roll axis is in the range of ⁇ 30°.
  • the location near the nip corresponds to a range including upstream and downstream areas in the moving direction of the slit strips S1 and S2, the range corresponding to an angular range of ⁇ 30° around the roll center.
  • the present invention is characterized in that the center guide is provided to restrain the strip edges that are located in and/or near the nip between the upper and lower rolls and that have an extremely high strip rigidity, so that the strips are prevented from being deformed even when the slit materials that have been moved toward the center guide receive reactive forces from the center guide.
  • the rolls are positively biased so as to apply external forces F to the slit materials in directions toward the line center.
  • a center guide 1 is provided near the line center so as to generate the reactive forces against the external forces F.
  • the inward skew angle for generating the external forces F may be appropriately set in accordance with the roll pinching force, and is preferably set to about 10° to 30°. In the present invention, it is not necessary to use the side guides according to the related art for guiding the edges of the strips at the outer sides of the line.
  • the center guide 1 is provided at the line-center sides of the strip edges that are located in and/or near the nip.
  • the strips S1 and S2 are nipped between upper and lower rolls 11 and 12 in the pinch roll, so that the strips do not shift vertically or yield and have an extremely high strip rigidity. Therefore, the edges of the strips at the sides facing the center guide 1 are not damaged ( Fig. 2(b) ).
  • the center guide preferably restrains the strip edges that are located in the nip.
  • the slit strips in the slit-strip conveyance line (also referred to as a slit line), the slit strips can be stabilized at the central area of the conveyance line without damaging the edges of the strips.
  • the strips can be easily passed in a stable state.
  • An apparatus having the structure illustrated in Fig. 1(a) was produced, and strips were passed along both sides of the center guide and were subjected to pinch by the pinch roll. The behavior of strip walking of the strips was measured with strip walking sensors provided at both sides of the strips at the exit side of the pinch roll (coiling section).
  • Fig. 5 illustrates an example of the result of the measurement.
  • an apparatus to prevent strip walking passes the slit strips S1 and S2, which are obtained by slitting a single full-width strip into two strips in a conveyance line, with a pinch roll.
  • the pinch roll includes the lower roll 12 that supports the bottom surfaces of the slit strips S1 and S2 and the upper rolls 11 that are separated from each other in a strip width direction.
  • the upper rolls 11 come into contact with the top surfaces of the slit strips S1 and S2 and move the slit strips S1 and S2 toward the line center by using the outside biased pinch ( Fig. 1(a) ) or the inward skew angle ( Fig.
  • the apparatus includes the center guide 1 that guides the line-center-side edges of the slit strips S1 and S2 that are restrained by being nipped.
  • central contact zones for nipping the line-center-side edges of the slit strips S1 and S2 may be provided at the line-center sides of the upper rolls.
  • the central contact zones are required simply to suppress upward warping of the edge portions of the strips. Therefore, the roll outer diameter of the central contact zones may be less than or equal to the roll outer diameter of the outside biased pinch zones.
  • the contact width of the central contact zone is 1/2 or less, preferably 1/4 or less, of the biased pinch contact width of the outside biased pinch zones. Accordingly, the roll pinching force applied in the central contact zone is smaller than that applied in the outside biased pinch zones, so that the slit strips are moved toward the line center.
  • the central contact zones of the upper rolls 11 ideally press the strips S1 and S2 over the areas including the line-center-side edges, and preferably press the strips S1 and S2 at positions as close to the edges as possible.
  • the central contact zones cannot press the areas including the edges.
  • portions that are separate from but near the edges are pressed within areas in which the amount of deformation of the strip edges can be maintained within an elastic range.
  • the areas near the edges may be areas between the center-side edges and positions separated from the center-side edges by about 10 mm toward the centers of the slit strips S1 and S2.
  • the central contact zones of the upper rolls 11 are brought into contact with the slit strips S1 and S2 at positions where the central sides of the central contact zones are separated from the center-side edges of the slit strips S1 and S2 by about 10 mm toward the centers of the slit strips S1 and S2 (see Fig. 13 ).
  • the width of the center guide is set to be less than or equal to a slit gap between the slit materials within a range in which sufficient strength is ensured.
  • the pinch points between the lower roll and the skewed upper rolls are positioned near the line center on the axial line of the lower roll. Accordingly, similar to the above-described case in which the central contact zones are provided, the line-center-side edges of the slit strips can be nipped.
  • an apparatus to prevent strip walking passes the slit strips S1 and S2, which are obtained by slitting a single full-width strip into two strips in a conveyance line, with a pinch roll.
  • the pinch roll includes the lower roll 12 that supports the bottom surfaces of the slit strips S1 and S2 and the upper rolls 11 that are separated from each other in a strip width direction.
  • the upper rolls 11 come into contact with the top surfaces of the slit strips S1 and S2 and move the slit strips S1 and S2 toward the line center by using the outside biased pinch ( Fig. 4(a) ) or the inward skew angle ( Fig. 4(b) ).
  • the apparatus includes the center guide 1 that guides the line-center-side edges of the slit strips S1 and S2 that are restrained by being nipped.
  • the center roll When the center roll is provided, the line-center-side edges of the slit strips are nipped by using the center roll. Therefore, in the case where the upper rolls included in the pinch roll are arranged to perform the outside biased pinch, it is not necessary that the upper rolls have the central contact zones. In addition, in the case where the upper rolls included in the pinch roll have the inward skew angle, the pinch points between the lower roll and the skewed upper rolls may either be positioned near the line center or the outer sides of the line on the axial line of the lower roll. When the center roll is provided, the line-center-side edges of the slit strips are nipped by the center roll 2 and the lower roll 12.
  • the separate upper rolls included in the pinch roll may be designed in consideration of only the function of centering the slit strips toward the line center.
  • the center roll is configured such that the center roll does not hinder the centering force applied by the separate upper rolls.
  • the roll pinching force of the center roll is set to 1/2 or less, preferably 1/4 or less, of the roll pinching force of the separate upper rolls.
  • the contact width of the center roll is set to 1/2 or less, preferably 1/4 or less, of the contact width of the separate upper rolls.
  • the contact width and the roll pinching force are adjusted within ranges in which the line-center-side edges of the slit strips to be nipped by the center roll do not rise.
  • the adjustment is made such that outward reactive forces applied in the strip width direction of the center roll is less than or equal to 1/4 of the centering forces F applied by the separate upper rolls. Since the upper rolls included in the pinch roll and the center roll have different roles, the adjustment versatility is increased. Therefore, the upper rolls and the center roll can be appropriately set.
  • the two slit strips do not always have the same width. Therefore, the gap between the slit strips is not always positioned at the line center. The position of the gap depends on the position of the slitter in the line width direction. Therefore, the center guide is installed at the same position as the slitter in the line width direction.
  • the upper rolls included in the pinch roll that are separated from each other in the width direction can also be shifted in accordance with the outer edges of the slit strips having different widths. This allows the generation of stable centering forces. Accordingly, two coils of slit strips having different strip widths can be produced simultaneously.
  • the pinch roll used in the present invention is not limited to those having the structure in which the two slit strips are passed along both sides of the center guide, and may instead be structured such that only one of the two slit strips is passed along one side of the center guide. More specifically, referring to Fig. 1 , for example, the pinch roll may be structured such that only the slit material S1 is passed and the slit material S2 is not passed, and such a pinch roll can also be used in the present invention. Here, it is not necessary to align the side portions of the slit strips with the outer sides of the biased pinch zones of the pinch roll in the width direction as illustrated in Fig. 1 .
  • slit-strip conveyance lines There are two types of slit-strip conveyance lines: conveyance lines that pass only slit strips (referred to as type I for convenience) and conveyance lines that alternately pass slit strips and full-width strips (normal strips) that are not slit (referred to as type II for convenience).
  • type I conveyance lines that pass only slit strips
  • type II conveyance lines that alternately pass slit strips and full-width strips (normal strips) that are not slit
  • the center guide may be installed in a fixed state.
  • the center guide is preferably retractable (of retractable type) instead of being installed in a fixed state. More specifically, when the slit strips are to be passed, the center guide moves downward to a vertical position corresponding to the top end of the lower roll and guides the line-center-side edges of the slit strips.
  • the center guide When a normal strip is passed without being slit, the center guide is retracted to the top surface of the normal strip (this structure corresponds to present invention [2]).
  • the pass line movement for example, is considered, the bottom end of the center guide is preferably moved downward to the vertical position corresponding to the top end of the lower roll, so that the edges can be reliably guided.
  • the center guide when the center guide is installed in a line in which the pass line movement is negligibly small, the center guide may be moved downward to a vertical position between the top surfaces of the slit materials and the top end of the roll.
  • FIG. 6 illustrates examples in which a rectangular-rod-shaped guide bar 13 is used as the center guide.
  • the guide bar 13 is of the retractable type (corresponds to the guide bar in present invention [3]).
  • the guide bar 13 may instead be of a fixed type.
  • FIG. 6(a) illustrates the structure which is based on the outside biased pinch and in which no center roll that is independent of the pinch roll is provided.
  • Fig. 6(b) illustrates the structure which is based on the inward skew angle and in which no center roll that is independent of the pinch roll is provided.
  • Fig. 6(c) illustrates the structure which is based on the outside biased pinch and which includes the center roll.
  • Fig. 6(d) illustrates the structure which is based on the inward skew angle and which includes the center roll.
  • Fig. 7 illustrates examples in which a disc-shaped guide disc 14 is used as the center guide.
  • the guide disc 14 is of the retractable type (corresponds to the guide disc in present invention [3]).
  • the guide disc 14 may instead be of a fixed type.
  • Fig. 7(a) illustrates the structure which is based on the outside biased pinch and in which no center roll that is independent of the pinch roll is provided.
  • Fig. 7(b) illustrates the structure which is based on the inward skew angle and in which no center roll that is independent of the pinch roll is provided.
  • Fig. 7(c) illustrates the structure which is based on the outside biased pinch and which includes the center roll.
  • Fig. 7(d) illustrates the structure which is based on the inward skew angle and which includes the center roll.
  • Fig. 8 illustrates examples in which a disc-shaped large-diameter guide disc 15 having an outer diameter larger than a roll diameter of the separate upper rolls 11 or a tiered disc roll 16 in which the large-diameter guide disc 15 and the center roll 2 are integrated together is used as the center guide.
  • both the large-diameter guide disc 15 and the tiered disc roll 16 are of the retractable type (correspond to present invention [4]).
  • one or both of the large-diameter guide disc 15 and the tiered disc roll 16 may instead be of a fixed type.
  • Fig. 8(a) illustrates the structure which is based on the outside biased pinch and in which no center roll that is independent of the pinch roll is provided.
  • Fig. 8(a) illustrates the structure which is based on the outside biased pinch and in which no center roll that is independent of the pinch roll is provided.
  • FIG. 8(b) illustrates the structure which is based on the inward skew angle and in which no center roll that is independent of the pinch roll is provided.
  • Fig. 8(c) illustrates the structure which is based on the outside biased pinch and which includes the center roll.
  • Fig. 8(d) illustrates the structure which is based on the inward skew angle and which includes the center roll.
  • the center guide may, for example, be moved downward by its own weight.
  • the center guide 1 may be positively pressed downward from above by a pressing mechanism or the like.
  • a pressing mechanism may be provided in which a small roll 41 is attached to an end portion of a cylinder 40 and is caused to press an upper portion of a guide ring 17 or the guide disc (not shown in Fig. 15 ) downward from above.
  • the pressing force is set such that the top surface of the normal strip is not deformed or damaged when the normal strip S is passed.
  • an outermost peripheral portion of the center guide 1 is preferably formed of the same material as the material of the upper rolls or an elastic body, such as rubber, since the outermost peripheral portion comes into contact with the normal strip S.
  • the side surfaces of the center guide 1, which come into contact with the edges of the slit materials S1 and S2, are preferably formed of a high-hardness wear-resistant material.
  • Fig. 9 illustrates examples in which a movable guide ring 17 which is loosely arranged to be movable in the vertical direction (corresponds to present invention [5]) is used as the center guide of the retractable type.
  • a ring-supporting shaft to which the guide ring 17 is loosely fitted may be appropriately provided in the gap between one and the other of the separate upper rolls 11.
  • FIG. 9(a) illustrates the structure which is based on the outside biased pinch and in which no center roll that is independent of the pinch roll is provided.
  • Fig. 9(b) illustrates the structure which is based on the inward skew angle and in which no center roll that is independent of the pinch roll is provided.
  • Fig. 9(c) illustrates the structure which is based on the outside biased pinch and which includes the center roll.
  • Fig. 9(d) illustrates the structure which is based on the inward skew angle and which includes the center roll.
  • a guide receiving groove into which the center guide is removably insertable may be formed in the lower roll included in the pinch roll that is provided with the center guide (this structure corresponds to present invention [6]).
  • FIG. 10 An example, of this structure is illustrated in Fig. 10 .
  • a separate ring 1E having a structure similar to that of the above-described tiered disc roll 16 is used as the center guide.
  • a guide receiving groove 12U receives a lower portion (end portion in a radial direction) of the separate ring 1E, and restrains the separate ring 1E from moving in the line width direction.
  • the guide receiving groove 12U may be outwardly tapered or rounded at the entrance corners thereof, so that the center guide, such as the separate ring 1E, can easily enter and the normal strips can be passed without any problem.
  • a first example is incorporated in a slit line of cold rolled sheet steel.
  • this slit line as illustrated in Fig. 11(a) , two slit strips S1 and S2 pass through first and second deflector pinch rolls 21 and 22 in an area downstream of a shear 20. Accordingly, the conveying direction of the slit strips S1 and S2 is changed from the horizontal direction to the downward direction. Then, the two slit strips S1 and S2 are coiled around first and second tension reels 31 and 32, respectively.
  • the conveying direction of the slit strip S2 is not changed from the horizontal direction at the first deflector pinch roll 21.
  • a normal strip S may also be passed.
  • the operation line including the first deflector pinch roll 21 and the first tension reel 31 and the operation line including the second deflector pinch roll 22 and the second tension reel 32 are alternately used to coil the normal strip S.
  • both the upper and lower rolls are flat rolls.
  • rolls having the structure illustrated in Fig. 9(a) are used as the first and second deflector pinch rolls 21 and 22. More specifically, the upper rolls 11 are separated from each other and configured to be capable of performing centering based on the outside biased pinch.
  • the movable guide ring 17 which is loosely fitted to the ring-supporting shaft, which is provided in the gap between one and the other of the separate upper rolls 11, such that the guide ring 17 is movable in the vertical direction is used as the center guide.
  • both of the slit strips S1 and S2 are moved toward the line center owing to the outside biased pinch, and the strip edges that have been moved toward the line center are guided by the guide ring 17.
  • the guide ring 17 When the normal strip S is passed, the guide ring 17 is automatically retracted to the top surface of the strip. Sufficient strip-walking preventing effect can be obtained even when the present invention is applied only to the first deflector pinch roll 21. However, when the present invention is applied also to the second deflector pinch roll 22 as in the first example, the effect can be increased.
  • FIG. 12 illustrates the structure according to the second example.
  • a pinch roll according to the related art is used as a second deflector pinch roll 22.
  • a pinch roll having the structure illustrated in Fig. 9(b) is used as a first deflector pinch roll 21.
  • the upper rolls 11 are separated from each other and configured to be capable of performing centering based on the inward skew angle.
  • the movable guide ring 17 which is loosely fitted to the ring-supporting shaft, which is provided in the gap between one and the other of the separate upper rolls 11, such that the guide ring 17 is movable in the vertical direction is used as the center guide.
  • the operational effects obtained by the second example are similar to those obtained when a pinch roll according to the related art is used as the second deflector pinch roll 22 in the first example.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
EP10839613.6A 2009-12-24 2010-12-20 Dispositif anti-désalignement pour plaques de bande fendues Not-in-force EP2517800B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2009292106 2009-12-24
JP2010269375A JP4780246B2 (ja) 2009-12-24 2010-12-02 スリット帯板の蛇行防止装置
PCT/JP2010/073644 WO2011078385A1 (fr) 2009-12-24 2010-12-20 Dispositif anti-désalignement pour plaques de bande fendues

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EP2517800A1 true EP2517800A1 (fr) 2012-10-31
EP2517800A4 EP2517800A4 (fr) 2013-07-24
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KR (1) KR101411743B1 (fr)
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JP5618075B2 (ja) * 2010-10-26 2014-11-05 Ｊｆｅスチール株式会社 スリット帯板の蛇行防止装置
WO2013157147A1 (fr) * 2012-04-19 2013-10-24 Ｊｆｅスチール株式会社 Dispositif de prévention de méandres pour tôles en bande fendus
JP7480766B2 (ja) 2021-09-30 2024-05-10 Ｊｆｅスチール株式会社 鋼帯尾端部の巻取装置及び方法並びに鋼帯の連続処理設備

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FR1375761A (fr) * 1963-06-25 1964-10-23 Achard Dispositif destiné à assurer pour plusieurs bandes parallèles mobiles une tension déterminée uniforme par unité de largeur
FR1468856A (fr) * 1965-10-18 1967-02-10 Alcan Aluminium France Perfectionnements à l'enroulement de bandes métalliques à la sortie d'une ligne de refendage

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JPH0415368Y2 (fr) * 1987-11-20 1992-04-07
JPH035017A (ja) 1989-05-31 1991-01-10 Mitsubishi Heavy Ind Ltd 帯板スリット材のスリット隙間調整装置
JPH05338872A (ja) * 1992-06-03 1993-12-21 Kawasaki Steel Corp スリットされたストリップの案内装置
JP2993376B2 (ja) * 1994-10-03 1999-12-20 日本鋼管株式会社 蛇行防止機能を有する熱間連続仕上圧延機
JPH08215747A (ja) * 1995-02-14 1996-08-27 Nippon Steel Corp 薄板製造・処理ラインのピンチロール設備
JPH10230319A (ja) * 1997-02-21 1998-09-02 Nippon Steel Corp スリット鋼板の安定通板装置
CN101462128A (zh) * 2008-11-20 2009-06-24 无锡五冶金属压延有限公司 导向夹送直头辊装置

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Publication number Priority date Publication date Assignee Title
FR1375761A (fr) * 1963-06-25 1964-10-23 Achard Dispositif destiné à assurer pour plusieurs bandes parallèles mobiles une tension déterminée uniforme par unité de largeur
FR1468856A (fr) * 1965-10-18 1967-02-10 Alcan Aluminium France Perfectionnements à l'enroulement de bandes métalliques à la sortie d'une ligne de refendage

Non-Patent Citations (1)

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Title
See also references of WO2011078385A1 *

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JP4780246B2 (ja) 2011-09-28
JP2011147997A (ja) 2011-08-04
KR20120104295A (ko) 2012-09-20
KR101411743B1 (ko) 2014-06-25
EP2517800A4 (fr) 2013-07-24
CN102665950B (zh) 2015-04-22
WO2011078385A1 (fr) 2011-06-30
CN102665950A (zh) 2012-09-12
EP2517800B1 (fr) 2014-03-05

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