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EP0508475B1 - Streckrollen-Richtmaschine - Google Patents

Streckrollen-Richtmaschine Download PDF

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Publication number
EP0508475B1
EP0508475B1 EP19920106289 EP92106289A EP0508475B1 EP 0508475 B1 EP0508475 B1 EP 0508475B1 EP 19920106289 EP19920106289 EP 19920106289 EP 92106289 A EP92106289 A EP 92106289A EP 0508475 B1 EP0508475 B1 EP 0508475B1
Authority
EP
European Patent Office
Prior art keywords
rolls
work rolls
backup
work
tension
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.)
Revoked
Application number
EP19920106289
Other languages
English (en)
French (fr)
Other versions
EP0508475A2 (de
EP0508475A3 (en
Inventor
Keiji Yamamoto
Yoshihiro Ushigami
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.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=14435554&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0508475(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Publication of EP0508475A2 publication Critical patent/EP0508475A2/de
Publication of EP0508475A3 publication Critical patent/EP0508475A3/en
Application granted granted Critical
Publication of EP0508475B1 publication Critical patent/EP0508475B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/05—Stretching combined with rolling

Definitions

  • the present invention relates to a tension roller leveler, and more particularly to a tension roller leveler capable of high-speed treatment.
  • the roller leveler 22 inherently requires not only a number of the work rolls 1', 2' having a relatively small diameter, but also backup rolls 3', 4' for respectively supporting those work rolls 1', 2'.
  • backup rolls 3', 4' need to have sufficient strength to prevent the work rolls 1', 2' from bend, their diameter must be remarkably larger than that of the work rolls 1', 2'.
  • intermediate roll 3' or 4' is disposed in a straddling relation to plural (two) work rolls 1' or 2' so as to support the plural (two) work rolls by an intermediate roll.
  • work rolls are independently supported by intermediate and backup roll arranged with a spacing therebetween in the lengthwise direction of the work rolls.
  • two rows of backup roll pairs are arranged at positions different from each other in the lengthwise direction of the work rolls such that one pair (group) of backup rolls support one work roll in an independent manner and the other pair (group) of backup rolls support another work roll, adjacent to the one work roll, in an independent manner.
  • tension leveler can relatively easily remove such deformation as edge waves and center buckles of treated materials (strip) through its levelling process, there occur a curl and a cross bow (gutter) by bending under tension, which residual curvatures remain even after levelling.
  • the strip is subjected to a roller leveler under a low-tension or no-tension state.
  • a roller leveler requires work rolls having a diameter of about 16 mm. But, the roller leveler comprised of the so many and thin work rolls encounters difficulties in reforming at a high speed over 300 mpm. In high-speed lines, the diameter of each work roll is usually desirable to be in a range of about 30 to 40 mm from the standpoints such as of maintaining the roll accuracy and ensuring the roll's service life.
  • roller leveler comprised of the work rolls having a diameter in a range of about 30 to 40 mm cannot produce any plastic strain due to bending and thus cannot offer any effect in reforming residual curvature, as will be seen from Fig. 8.
  • Fig. 10 shows the relationship between a line speed and a noise level in the roller leveler of the type that one backup roll is disposed in a straddling relation to a plurality of work rolls as shown in Fig. 5.
  • Fig. 10 when the line speed is regulated to increase, abnormal noise due to resonation has occurred in a range exceeding 500 mpm. Conversely, when the line speed is regulated to decrease, abnormal noise due to resonation has occurred until lowering down to 400 mpm. Note that although the occurrence of such abnormal noise is fluctuated to some extent depending on the size of the strip S, surface roughness and other properties, a similar tendency appears under any conditions.
  • An object of the present invention is to provide a tension roller leveler by which stable curl and gutter reforming can be performed even in a high-speed range not less than 300 mpm without causing abnormal noise and vibration, while ensuring superior surface condition of a strip and final products with a high commercial value.
  • a tension roller leveler comprising an upper frame for mounting a plurality of upper work rolls thereon, a lower frame for mounting a plurality of lower work rolls thereon in opposite relation to said upper work rolls, and means for regulating relative positions of said upper frame and said lower frame to adjust opening degrees of said upper and lower work rolls in the inlet side and the outlet side for a strip, wherein said work rolls are each supported independently by one set of backup rolls in two rows, and said backup rolls in two rows are arranged in a zig-zag pattern such that axial positions of shaft support portions of said backup rolls in two rows will not overlap with each other.
  • Fig. 1 is a schematic side view of an embodiment of the present invention.
  • Fig. 2 is a schematic plan view showing an arrangement of backup rolls in the present invention.
  • Fig. 3 is a side view of a roller leveler unit in the present invention.
  • Fig. 4 is a schematic side view of a conventional tension leveler.
  • Fig. 5 is a schematic side view of a combination of a conventional tension leveler and roller leveler.
  • Fig. 6 is a graph showing the relationship between an amount of penetration and an amount of residual curvature in the conventional tension leveler.
  • Fig. 7 is a graph showing the relationship between an amount of penetration and an amount of residual curvature in a combination of the conventional tension leveler and roller leveler.
  • Fig. 8 is a graph showing stress distribution when a strip plate is subjected to bending under no tension.
  • Fig. 9 is a graph showing stress distribution when a strip plate is subjected to bending under tension.
  • Fig. 10 is a graph showing the relationship between a line speed and a noise level in the conventional tension roller leveler.
  • upper work rolls 1a, 1b and lower work rolls 2a, 2b arranged on the upper and lower sides of a strip S are supported to an upper roll support 5 and a lower roll support 6 via backup rolls 3a, 3b and 4a, 4b, respectively.
  • the upper work rolls 1a, 1b and the lower work rolls 2a, 2b are each separately supported by a pair of backup roll rows 3a, 3b and 4a, 4b, respectively. More specifically, as shown in Fig. 2, the backup roll rows 3a, 3b and 4a, 4b each comprise a plurality of rolls divided in the lengthwise direction of the work rolls 1a, 1b, 2a, 2b and joined to each other via bearing members (not shown) disposed between every adjacent divided rolls such that the total length is substantially equal to the length of the work rolls 1a, 1b, 2a, 2b.
  • a pair of every two backup roll rows 3a, 3b or 4a, 4b separately supports each of the upper or lower work rolls 1a, 1b or 2a, 2b in an independent manner, respectively.
  • pairs of two backup roll rows 3a, 3b, or 4a, 4b are arranged in a zig-zag pattern so that the bearing members of ones of the paired backup roll rows 3a or 3b, 4a or 4b will not overlap with the bearing members of the other counter-part backup rolls.
  • the upper roll support 5 and the lower roll support 6 are fixed to an upper frame 7 and a lower frame 8, respectively, either one of which (the lower frame 8 in this embodiment) is supported in a movable manner.
  • the lower frame 8 is supported at its lower surface by rods 11a, 11b which are movable up and down by worm jacks 10a, 10b, respectively, whereby the lower frame 8 can be moved vertically and also tilted upon actuation of the worm jacks 10a, 10b.
  • the work rolls 1a, 1b, 2a, 2b can be controlled to desirably adjust an amount of closing and opening degrees (penetration) of the inlet side work roll and the outlet side work roll.
  • rollers 12a, 12b are rollers rotatably supported on the opposite sides of the lower frame 8. These rollers 12a, 12b are arranged to respectively rest on rails 13a, 13b when the lower frame 8 is descended, thereby allowing the lower frame 8 to move laterally (in a direction normal to the drawing sheet of Fig. 3).
  • Denoted at 14a, 14b are bridle rolls respectively disposed on the inlet side and the outlet side of the work rolls 1a, 1b, 2a, 2b for applying a predetermined tension to the strip S.
  • the number of the work rolls 1a, 1b, 2a, 2b is illustrated in this embodiment to be eleven in total, i.e., five for the upper work rolls plus six for the lower work rolls, the number of the work rolls may be of any desired one so long as the number of the upper work rolls is one more (or less) than that of the lower work rolls and the total number of both the work rolls is not less than five.
  • the work rolls 1a, 1b, 2a, 2b have their diameters which are so selected as to gradually increase from the inlet side toward the outlet side of the roller leveler for the purpose of gradually decreasing the curvature of bending of the strip S.
  • the strip S is moved to pass through the work rolls 1a, 1b and 2a, 2b while undergoing a predetermined tension from the bridle rolls 14a, 14b.
  • the strip S is repeatedly subjected to bending under the tension and thus delivered from the inlet side toward the outlet side of the roller leveler while causing an elongation due to plastic strain, as explained above in connection with Fig. 9.
  • the path length of the strip S is changed between the every two work rolls adjacent to each other.
  • the adjacent work rolls are each separately supported by a corresponding pair of backup roll rows so that the individual work rolls 1a, 1b, 2a, 2b are rotatable in an independent manner.
  • adjacent work rolls are supported by a common single backup roll as with the prior art, those adjacent work rolls are held in slide contact with each other and the rotation of one work roll is mechanically fed back to the other work roll, thereby causing both the work rolls to be forced to rotate at the same speed. For that reason, where an extension of the strip S occurs between both the work rolls, a relative slip is necessarily caused at any location in the roller leveler unless a speed difference corresponding to the amount of such an elongation is provided. In contrast, with the present invention, the adjacent work rolls are mechanically separated from each other and separately rotatable, resulting in no possibility of the occurrence of such a relative slip.
  • the work rolls and the backup rolls can be rotated in an independent manner, whereby no relative slip is caused at any location in the tension leveler for absorbing an extension of the strip between the adjacent work rolls unlike the conventional tension roller leveler. Consequently, while the relative slip has produced abnormal noise due to abnormal resonation and has resulted in flaws called chatter marks in a conventional high-speed treatment line, any such abnormality will not occur in the present invention.
  • the backup rolls are each formed by joining a plurality of rolls to each other in the lengthwise direction of the work rolls, a pair of backup rolls are arranged in a zig-zag pattern such that the bearing members of the divided rolls of one backup roll will not overlap with the bearing members of the divided rolls of the other. Therefore, the joints between the divided rolls of each backup roll will not be transferred to the surface of the strip via the work roll to appear as linear flaws. As a result, the tension roller leveler with superior stability in a high-speed range can be obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)

Claims (3)

  1. Streckrollen-Richtmaschine, umfassend einen oberen Rahmen (7) zum Montieren bzw. Lagern einer Anzahl oberer Arbeitswalzen (1a, 1b) daran, einen unteren Rahmen (8) zum Montieren bzw. Lagern einer Anzahl unterer Arbeitswalzen (2a, 2b) daran in einer den oberen Arbeitswalzen (1a, 1b) gegenüberstehenden Beziehung und Mittel (10a, 10b, 11a, 11b) zum Regulieren der Relativstellungen des oberen Rahmens (7) und des unteren Rahmens (8) zwecks Einstellung der Öffnungsgrade der oberen (1a, 1b) und der unteren (2a, 2b) Arbeitswalzen an der Einlaufseite und der Auslaufseite für ein Band (S), wobei die Arbeitswalzen jeweils durch einen Satz von Stützwalzen (3a, 3b, 4a, 4b) in zwei Reihen getrennt oder unabhängig voneinander abgestützt sind und die Stützwalzen (3a, 3b, 4a, 4b) in zwei Reihen derart in einem Zickzackmuster angeordnet sind, daß Axialpositionen von Wellenlager(ungs)abschnitten der Stützwalzen (3a, 3b, 4a, 4b) in zwei Reihen einander nicht überlappen.
  2. Streckrollen-Richtmaschine nach Anspruch 1, wobei ein Satz der Stützwalzen (3a, 3b, 4a, 4b) in zwei Reihen mit der Arbeitswalze (1a, 2a) über praktisch die Gesamtlänge hinweg in Berührung gebracht ist.
  3. Streckrollen-Richtmaschine nach Anspruch 1 oder 2, wobei die Streckrichtmaschine eine Umformgeschwindigkeit (reform speed) von nicht unter 350 m/min (mpm) aufweist.
EP19920106289 1991-04-12 1992-04-10 Streckrollen-Richtmaschine Revoked EP0508475B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10651591A JPH0576934A (ja) 1991-04-12 1991-04-12 テンシヨンローラレベラ
JP106515/91 1991-04-12

Publications (3)

Publication Number Publication Date
EP0508475A2 EP0508475A2 (de) 1992-10-14
EP0508475A3 EP0508475A3 (en) 1992-12-02
EP0508475B1 true EP0508475B1 (de) 1995-02-15

Family

ID=14435554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920106289 Revoked EP0508475B1 (de) 1991-04-12 1992-04-10 Streckrollen-Richtmaschine

Country Status (4)

Country Link
EP (1) EP0508475B1 (de)
JP (1) JPH0576934A (de)
CA (1) CA2065801C (de)
DE (1) DE69201395T2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1275446A2 (de) † 2001-05-22 2003-01-15 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Verfahren und Vorrichtung zum Beseitigen von Querkrümmungen in Metallbändern
DE102016106208A1 (de) 2016-04-05 2017-10-05 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Verfahren zum Streckbiegerichten eines Bandes

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4323385C1 (de) * 1993-07-13 1995-01-19 Bwg Bergwerk Walzwerk Verfahren zum Beseitigen von Querkrümmungen in Metallbändern, insbesondere dünnen Metallbändern bis 2,0 mm Dicke
EP2475473B1 (de) * 2009-09-09 2012-12-26 Siemens Vai Metals Technologies SAS Nivelliermaschine mit mehreren walzen
KR101583214B1 (ko) * 2012-11-29 2016-01-07 스틸플랜테크가부시키가이샤 레벨러 설비 및 판재의 교정 방법
CN110385385B (zh) * 2018-04-23 2024-04-26 无锡市夏音电器有限公司 一种冰箱电线生产加工用矫直机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT314453B (de) * 1971-07-09 1974-04-10 Bwg Bergwerk Und Walzwek Masch Verfahren und Vorrichtung zum Reduzieren von Blechbändern in Bandstraßen
JPS5118016B2 (de) 1971-10-08 1976-06-07
JPS5214568A (en) * 1975-07-26 1977-02-03 Ube Industries Tension roller leveller
DE2536582C3 (de) * 1975-08-16 1979-08-09 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh, 4100 Duisburg Wechseltraverse
DE3234160C2 (de) * 1982-09-15 1986-10-23 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh, 4100 Duisburg Verfahren und Warmbandstraße zum Herstellen von dünnem Metallband, insbesondere Metall-Breitband, aus Warmband
JPH0220618A (ja) * 1988-07-06 1990-01-24 Hitachi Ltd ローラレベラ

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1275446A2 (de) † 2001-05-22 2003-01-15 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Verfahren und Vorrichtung zum Beseitigen von Querkrümmungen in Metallbändern
EP1275446B2 (de) † 2001-05-22 2013-09-04 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Verfahren zum Beseitigen von Querkrümmungen in Metallbändern
DE102016106208A1 (de) 2016-04-05 2017-10-05 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Verfahren zum Streckbiegerichten eines Bandes

Also Published As

Publication number Publication date
JPH0576934A (ja) 1993-03-30
EP0508475A2 (de) 1992-10-14
DE69201395D1 (de) 1995-03-23
EP0508475A3 (en) 1992-12-02
DE69201395T2 (de) 1995-08-03
CA2065801A1 (en) 1992-10-13
CA2065801C (en) 1999-08-03

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