EP0684089A2 - Dispositif pour changer les cylindres d'un laminoir à plusieurs cylindres - Google Patents

Dispositif pour changer les cylindres d'un laminoir à plusieurs cylindres Download PDF

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Publication number
EP0684089A2
EP0684089A2 EP95303393A EP95303393A EP0684089A2 EP 0684089 A2 EP0684089 A2 EP 0684089A2 EP 95303393 A EP95303393 A EP 95303393A EP 95303393 A EP95303393 A EP 95303393A EP 0684089 A2 EP0684089 A2 EP 0684089A2
Authority
EP
European Patent Office
Prior art keywords
rolls
work roll
work
carriage
change device
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.)
Ceased
Application number
EP95303393A
Other languages
German (de)
English (en)
Other versions
EP0684089A3 (fr
Inventor
David John Lupton
Barrie James Hunt
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.)
Davy Mckee Poole Ltd
Original Assignee
Davy Mckee Poole 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
Application filed by Davy Mckee Poole Ltd filed Critical Davy Mckee Poole Ltd
Publication of EP0684089A2 publication Critical patent/EP0684089A2/fr
Publication of EP0684089A3 publication Critical patent/EP0684089A3/fr
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/103—Manipulators or carriages therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/147—Cluster mills, e.g. Sendzimir mills, Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls

Definitions

  • This invention relates to the changing of the work rolls of a cluster mill stand.
  • Cluster mills sometimes known as SENDZIMIR mills comprise a pair of slender work rolls each backed up by a plurality of support rolls.
  • SENDZIMIR mills comprise a pair of slender work rolls each backed up by a plurality of support rolls.
  • Each roll change has to take place as quickly as possible and it is usual to replace the work rolls while strip material is present in the mill stand.
  • the work rolls must be withdrawn and replaced by new rolls without the work roll contacting the support rolls or the strip.
  • a method of removing the work rolls of a split housing cluster mill stand comprises the steps of
  • the work rolls are removed from the stand and replacement rolls placed in position in the stand.
  • the work rolls are supported and displaced axially by means of a roll change device.
  • a roll change device for removing and replacing the work rolls of a split housing cluster mill comprises: a carriage displaceable in a first direction and having upper and lower elongate support arms arranged one above the other and each extending in said first direction; means by which each arm can be raised and lowered independently of the other and each arm having means by which the arm can be connected in cantilever fashion to an end of a work roll of or for a cluster mill.
  • each support arm is secured to the carriage by means of links which retain the arms in parallel relation and which permit each support arm to be raised and lowered independently of the other.
  • the links include spherical bearings which permit the arms to have a degree of lateral movement relative to the first direction.
  • a cluster mill comprises an upper housing 1 and a lower housing 3.
  • the two housings are of generally rectangular shape and the lower housing rests on a foundation 5.
  • Extending upwardly from the lower housing are four support columns 7, one at each corner.
  • Each column one of which is shown in detail in Figure 2, includes a piston rod 8 anchored at its lower end by a pin 8A in the lower housing 3 and extending upwardly through an opening in the upper housing.
  • the rod carries a piston 9 which is located in a ram housing 9A secured to the upper housing.
  • a further ram 10 is mounted on the housing 9A and the piston of the further ram projects through an opening in the housing 9A and engages the top of the piston rod 8.
  • the upper housing supports a slender work roll 11 backed up by a multiplicity of support rolls indicated generally by reference numeral 13.
  • the lower housing supports a slender work roll 15 which is backed up by a multiplicity of support rolls 17.
  • Figure 3 shows that on the roll change side of the mill there is a motorised car 19 which is movable on tracks leading from the mill to a roll change station (not shown).
  • the car has an upper beam structure 20 which provides tracks 20A on which is mounted a motorised carriage 25.
  • the upper beam structure 20 is mounted on a plurality of jacks 21 which are operated in unison by a drive mechanism 22 to raise and lower the beam structure 20 and the carriage 25.
  • the carriage comprises a massive body 27 from which two elongate arms 28 and 29 project in the direction towards the mill stand.
  • the upper arm 28 overlies the lower arm 29 and is supported from the body 27 by a pair of upper links 30, and a pair of lower links 31.
  • Each link is of elongate form and carries an eye with a spherical bearing 33 at each end. one end of each link is pivotally secured by way of the bearings with the body 27 and the other end with the arm 28.
  • the links support the arm in generally horizontal relation and the spherical links permit a limited movement laterally.
  • the lower arm 29 is supported on three links, two lower links 35 and one upper centrally disposed link 37.
  • a hydraulic ram 39 mounted on the body 27 engages the underside of the arm 28 and by actuating the ram, the arm can be raised and lowered but the links keep the arm substantially horizontal.
  • a further ram 41 is mounted on the body and engages the underside of the arm 29 and the links permit the arm to be raised and lowered whilst remaining substantially horizontal.
  • Figure 7 illustrates the outer end of one of the arms 28, 29 and also shows the adjacent end of the work roll 11,15 which has a tapered end socket 47 and a peripheral groove 49.
  • the outer end of the arm has a tapered end tip 43 arranged to fit into the socket 47 and just back from the tip is a sleeve 45 slideable relative to the arm and forming part of a push-off device to disengage the roll from the tapered end tip of the arm.
  • a gantry 51 is supported on the car 19 and horizontal beams 52 overly the surface 20A.
  • a frame 53 is suspended on wheels running on the beams 52 and is movable in the direction normal to the direction of movement of the carriage 25.
  • the frame provides upper and lower sets of support lugs for a pair of used work rolls and a pair of replacement work rolls. The lugs enter into the grooves 49.
  • the upper work roll has a device not shown inserted into the groove 49 to bias the work roll against its support rolls.
  • the car 19 is moved into position and the height of the beam structure 20 is raised or lowered as appropriate by the jacks 21 to substantially align the lower support arm 29 with the lower work roll.
  • the rams 10 the upper part of the housing is raised by a distance that can vary due to the difference in roll diameter determined by the state of the roll grind, to separate the work rolls, matching the distance between the ends of the arms 28 and 29. If there is strip in the mill it is raised by fingers (not shown) away from the bottom work roll.
  • the arms 28,29 take up the position shown in figure 7 where the tapered end tips 43 are slightly below the centre line of the sockets in the rolls.
  • Balancing pressure is applied to the rams 39, 41 to reduce the effective weight of the arms.
  • the carriage 25 is driven forward so that the ends of the arms easily enter the tapered sockets 47 of the rolls, so that the arms and the rolls are in cantilever relation.
  • the arm 29 and hence the roll is raised away from the support rolls but below the strip and the upper roll.
  • the biassing means are withdrawn from the groove 49 so that the rolls are now supported entirely on the arms.
  • the upper housing 1 is raised further but the upper work roll remains supported on the arm so that there is clearance between both of the rolls and their support rolls, between the work rolls and between each work roll and the strip.
  • the carriage is now displaced away from the mill to withdraw the rolls simultaneously whilst supported in cantilever fashion.
  • the frame 53 is moved on the beams 52 until lugs on the frame are beneath the grooves in the rolls and by operating the jacks 21, the carriage and hence the rolls are lowered onto the lugs.
  • the sliding sleeves 45 push the rolls off of the ends of the arms so that the rolls are supported entirely on the lugs.
  • the frame is now moved so that new rolls supported on the frame are aligned with the arms and the arms are connected to the new rolls.
  • Cylinder 41 is actuated to raise arm 29 carrying lower new rolls.
  • the carriage 25 is driven forward to advance the new rolls into the mill.
  • the upper roll is moved upwardly against its support rolls by cylinder 39 and the biassing device is reinserted into groove 49 to support the roll.
  • the bottom roll is lowered onto its support rolls by retracting cylinder 41 and the support fingers lower the strip to the pass-line.
  • the arms are withdrawn from the rolls, the roll change device is retracted and the upper part of the mill housing is lowered until the work rolls are in rolling relation with the strip.
  • the biassing means is removed.
  • This invention enables work rolls of a split housing cluster mill to be removed quickly and replaced without them contacting each other, their support rolls or the strip when it is present in the mill.
  • the rolls are removed and replaced simultaneously and the roll change device enables slight misalignment between the arms and the ends of the rolls to be taken up by the use of links with spherical bearings.
  • Centering devices (not shown) but in the form of spring loaded plungers are conveniently located on the links 30, 31 and 35 to engage the adjacent lateral walls of the body 27 and position the links relative to the body so that the arms are correctly aligned with the longitudinal axes of the work rolls.
  • the gantry 51 may alternatively take the form of a wheeled trolley which is movable on tracks located in the foundations.
  • one or both rolls may be moved axially before the connection is fully made.
  • a retractable spring loaded buffer 55 is mounted on the car 19 to allow limited axial movement of one roll relative to the other.
  • small cylinders may be mounted in the mill against the ends of the rolls to react against axial forces applied to the rolls by the carriage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP95303393A 1994-05-23 1995-05-22 Dispositif pour changer les cylindres d'un laminoir à plusieurs cylindres. Ceased EP0684089A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9410408 1994-05-23
GB9410408A GB9410408D0 (en) 1994-05-23 1994-05-23 Roll change device for cluster mill

Publications (2)

Publication Number Publication Date
EP0684089A2 true EP0684089A2 (fr) 1995-11-29
EP0684089A3 EP0684089A3 (fr) 1996-03-20

Family

ID=10755646

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95303393A Ceased EP0684089A3 (fr) 1994-05-23 1995-05-22 Dispositif pour changer les cylindres d'un laminoir à plusieurs cylindres.

Country Status (2)

Country Link
EP (1) EP0684089A3 (fr)
GB (1) GB9410408D0 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0908246A1 (fr) * 1997-10-10 1999-04-14 Kvaerner Metals Clecim Dispositif de changement des cylindres de travail et/ou des cylindres intermédiaires d'une cage de laminoir, et ratelier de stockage pour un tel dispositif
WO2021181039A1 (fr) * 2020-03-10 2021-09-16 Fives Dms Outil et procédé de changement de cylindre de travail dans laminoir

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3019059C2 (de) * 1980-05-19 1985-05-02 Maschinen- Und Werkzeugbau Gmbh, 4600 Dortmund Vorrichtung zum Auswechseln der Arbeitswalzen von Walzgerüsten
DE3042445C2 (de) * 1980-11-11 1982-09-16 Maschinen- Und Werkzeugbau Gmbh, 4600 Dortmund Vorrichtung zum Auswechseln der Arbeitswalzen von Walzgerüsten
DE3510842A1 (de) * 1985-03-26 1986-10-09 Fried. Krupp Gmbh, 4300 Essen Transportfahrzeug fuer den wechsel insbesondere der arbeitswalzen oder zwischenwalzen von walzgeruesten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0908246A1 (fr) * 1997-10-10 1999-04-14 Kvaerner Metals Clecim Dispositif de changement des cylindres de travail et/ou des cylindres intermédiaires d'une cage de laminoir, et ratelier de stockage pour un tel dispositif
FR2769525A1 (fr) * 1997-10-10 1999-04-16 Kvaerner Metals Clecim Dispositif de changement des cylindres de travail et/ou des cylindres intermediaires d'une cage de laminoir, et ratelier de stockage pour un tel dispositif
US6098439A (en) * 1997-10-10 2000-08-08 Kvaerner Metals Clecim Device for changing the rolls and/or the intermediate rolls in a roll stand and storage rack for such a device
WO2021181039A1 (fr) * 2020-03-10 2021-09-16 Fives Dms Outil et procédé de changement de cylindre de travail dans laminoir
FR3108047A1 (fr) * 2020-03-10 2021-09-17 Fives Dms Outil et procédé de changement de cylindre de travail dans laminoir

Also Published As

Publication number Publication date
EP0684089A3 (fr) 1996-03-20
GB9410408D0 (en) 1994-07-13

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