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EP0172155B1 - Vorrichtung zum Speichern von gewalztem Band aus ferromagnetischem Metall - Google Patents

Vorrichtung zum Speichern von gewalztem Band aus ferromagnetischem Metall Download PDF

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Publication number
EP0172155B1
EP0172155B1 EP85870107A EP85870107A EP0172155B1 EP 0172155 B1 EP0172155 B1 EP 0172155B1 EP 85870107 A EP85870107 A EP 85870107A EP 85870107 A EP85870107 A EP 85870107A EP 0172155 B1 EP0172155 B1 EP 0172155B1
Authority
EP
European Patent Office
Prior art keywords
strip
rollers
magnetic
strand
rolled strip
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.)
Expired
Application number
EP85870107A
Other languages
English (en)
French (fr)
Other versions
EP0172155A1 (de
Inventor
Jean-Marie Vandekerckove
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.)
Cockerill Mechanical Industries SA
Original Assignee
Cockerill Mechanical Industries SA
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
Application filed by Cockerill Mechanical Industries SA filed Critical Cockerill Mechanical Industries SA
Priority to AT85870107T priority Critical patent/ATE42916T1/de
Publication of EP0172155A1 publication Critical patent/EP0172155A1/de
Application granted granted Critical
Publication of EP0172155B1 publication Critical patent/EP0172155B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • B21C49/00—Devices for temporarily accumulating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/24—Advancing webs by looping or like devices

Definitions

  • the present invention relates to a device for accumulating a laminated strip of ferromagnetic metal, in particular a hot-rolled, cold-rolled, coated or uncoated metal strip.
  • accumulation device is meant a device which acts as a "buffer tank", for example between the rolling mill stands and the installations for further processing the rolled strip.
  • the accumulation device consists of one or more mobile cylinders known as deflection on which the laminated strip passes by enveloping it at an angle of approximately 180 °.
  • the laminated strip is generally supported by parallel rollers whose axes of rotation are perpendicular to the direction of movement of the strip. In the case of vertical storage devices, the laminated strip passes between opposite rollers which prevent the latter from flapping on said rollers; which would damage the surface condition of said strips.
  • a notable drawback of known accumulation devices is that the tension exerted on the strip is high and that, to limit it, it is necessary to provide support devices, that is to say numerous support rollers. It is in the case of long accumulated lengths that the support rollers must be retractable so that the strip can be removed from the accumulation device.
  • document US-A-4 281 784 describes an accumulation device of the type mentioned in which the metal strip is supported by magnetic effect from above, thanks to an arrangement of non-magnetic rollers and fixed magnets arranged between them.
  • Document US-A-2 967 007 also describes an accumulation device in which the metal strip is supported by magnetic rollers constituted by magnetic discs separated by discs made of an insulating material.
  • document US-A-2,750,187 describes a device for accumulating laminated strip of a particular type which uses known magnetic devices, that is to say the rollers described in US-A- 2,967,007 for example.
  • a serious drawback of these magnetic rollers is that they also attract metallic particles which "stick" to their periphery and which become embedded in the cylindrical wall or in the rolled sheet. This results in premature wear of the cylinder and an unacceptable surface condition of the laminated strip.
  • the present invention aims to provide an accumulation device of the aforementioned type intended for the accumulation of laminated metal strip, in particular ferro-magnetic metal, which is of particularly simple construction.
  • Another object of the present invention is to provide a device for accumulating a laminated metal strip, said strip being supported by magnetic effect, which has a design and construction different from those of the prior art.
  • the present invention finally aims to provide a device for accumulating a laminated metal strip, in which said strip is supported by magnetic effect and which does not have the drawbacks of known installations, such as the encrustation of metal particles in the cylinder or the sheet metal strip.
  • the device for accumulating a ferromagnetic metal rolled strip comprising at least one movable deflection cylinder, a first series of rollers intended for the first strand of the laminated strip and a second series of rollers intended for the second strand of the laminated strip, and in which at least the first strand of said strip is retained by magnetic effect against magnetic rollers external to the loop formed by the strip, is characterized in that said magnetic rollers each consist of a hollow cylinder rotating around of its axis and comprising, inside, one or more fixed magnetization devices which exert a sufficient attraction force on the strip to apply it against the outer wall of said magnetic rollers.
  • the magnetization device consists of ferrite plates which guarantee magnetization for an extended service life.
  • the fixed magnets preferably occupy a section of 45 to 135 °, especially 90 to 135 ° in the section of the roller.
  • the hollow cylinder consists of a non-magnetic or paramagnetic material.
  • the laminated strip to accumulate in the device of the invention is suspended by ferromagnetic effect and the evacuation of the strip from the accumulation device according to the invention is notably facilitated.
  • the displacement of the deflection cylinder on which the laminated strip is partially wound can be greater than the distance between two suspension rollers, when the laminated strip is engaged thereon, since its movement is no longer hindered as in some conventional devices, by the cylinders inside the loop.
  • magnetized and "sticky" metal particles on the suspension roller can be easily removed, for example by scraping or brushing, from the surface of the roller or strip, outside the magnetized area.
  • the tape accumulation device comprises a return cylinder 1 mounted on a mobile carriage 2, the movement of which can be controlled by a drive means 3 known per se.
  • the figure shows a horizontal laminated strip accumulation device but it is obvious that the present invention is not limited to this type of accumulation device and that it can also be arranged vertically.
  • the laminated strip 5 is suspended by ferro-magnetic effect from suspension rollers 7 which are arranged outside the loop formed by the return cylinder 1.
  • the laminated strip 5 can easily be removed from the accumulation device without the inner rollers interfering with this operation.
  • the carriage 2 comprising the return cylinder 1 can advantageously be moved while the laminated strip is circulating, without this movement being hampered by the interior cylinders.
  • the carriage can only be moved a distance equal to the space separating two rollers without the roller disposed downstream of the cylinder having to be retracted.
  • the device according to the present invention is considerably simplified compared to known devices, since rollers arranged on one side of the strip are sufficient to prevent the latter from flapping, whereas, in known devices, it was necessary to have rollers on both sides of the strip.
  • the magnetic roller consists of a hollow cylinder 11 which rotates around its axis and which is supported by the latter in a manner known per se, for example by bearings and / or rings.
  • Said hollow cylinder has, inside, one or more magnetization devices 12 which exert a sufficient attraction force on the strip to apply the latter against the wall of said cylinder.
  • the hollow cylinder is formed by a non-magnetic or paramagnetic material.
  • the magnetization device consists of several ferrite plates which cover a sector ranging from 90 to 135 ° in the section of the magnetic suspension roll.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Physical Vapour Deposition (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Hard Magnetic Materials (AREA)

Claims (4)

1. Vorrichtung zum Speichern von gewalztem Band aus ferromagnetischem Metall mit mindestens einem beweglichen Umlenkzylinder (1), einer ersten Reihe von Rollen (7), die einem ersten Trumm des gewalzten Bandes (5) zugeordnet sind, und einer zweiten Reihe von Rollen (7'), die einem zweiten Trumm des gewalzten Bandes (5) zugeordnet sind, und wobei mindestens das erste Trumm des Bandes (5) durch Magnetwirkung gegen die magnetischen Rollen (7) außerhalb der von dem Band (5) gebildeten Schleife gehalten wird, dadurch gekennzeichnet, daß die magnetischen Rollen jeweils aus einem Hohlzylinder (11) bestehen, der sich um seine Achse dreht und im Inneren eine oder mehrere feststehende Magnetisierungseinrichtungen (12) aufweist, die eine ausreichende Anziehungswirkung auf das Band (5) ausüben, um es gegen die Außenwand der magnetischen Rollen anzulegen.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Magnetisierungseinrichtung (12) durch Ferritplättchen gebildet wird.
3. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die feststehenden Magnete (12) einen Sektor von 45 bis 135°, vorzugsweise von 90 bis 135° im Querschnitt der Rolle einnehmen.
4. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Hohlzylinder (11) aus amagnetischem oder paramagnetischem Material besteht.
EP85870107A 1984-08-14 1985-08-08 Vorrichtung zum Speichern von gewalztem Band aus ferromagnetischem Metall Expired EP0172155B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85870107T ATE42916T1 (de) 1984-08-14 1985-08-08 Vorrichtung zum speichern von gewalztem band aus ferromagnetischem metall.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU85507 1984-08-14
LU85507A LU85507A1 (fr) 1984-08-14 1984-08-14 Dispositif d'accumulation de bande laminee de metal ferro-magnetique

Publications (2)

Publication Number Publication Date
EP0172155A1 EP0172155A1 (de) 1986-02-19
EP0172155B1 true EP0172155B1 (de) 1989-05-10

Family

ID=19730307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85870107A Expired EP0172155B1 (de) 1984-08-14 1985-08-08 Vorrichtung zum Speichern von gewalztem Band aus ferromagnetischem Metall

Country Status (5)

Country Link
EP (1) EP0172155B1 (de)
AT (1) ATE42916T1 (de)
DE (1) DE3570051D1 (de)
ES (1) ES8608952A1 (de)
LU (1) LU85507A1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750187A (en) * 1952-02-28 1956-06-12 United States Steel Corp Apparatus for maintaining a loop of continuous strip at entry end of a processing line
US2967007A (en) * 1957-04-05 1961-01-03 Wean Engineering Co Inc Means for stabilizing hanging loops
US4281784A (en) * 1979-04-24 1981-08-04 Mcmullen James W Magnetic strip separator

Also Published As

Publication number Publication date
DE3570051D1 (en) 1989-06-15
ATE42916T1 (de) 1989-05-15
LU85507A1 (fr) 1986-03-11
ES545991A0 (es) 1986-07-16
EP0172155A1 (de) 1986-02-19
ES8608952A1 (es) 1986-07-16

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