EP 3445506 B1 20200909 - METHOD AND DEVICE FOR CHANGING THE ROLLS ON A ROLLING MILL
Title (en)
METHOD AND DEVICE FOR CHANGING THE ROLLS ON A ROLLING MILL
Title (de)
VERFAHREN UND VORRCIHTUNG ZUM WECHSELN DER WALZEN IN EINEM WALZWERK
Title (fr)
PROCEDE ET INSTALLATION DE CHANGEMENT DES CYLINDRES D'UN LAMINOIR
Publication
Application
Priority
- FR 1653411 A 20160418
- EP 2017059057 W 20170414
Abstract (en)
[origin: WO2017182406A1] The invention relates to a method for changing the rolls on a rolling mill for rolling a metal strip, which is carried out in an installation having a rolling mill of the Quarto stand type, comprising two working rolls (3, 4), one lower and one upper, defining the nip through which the sheet passes, and two support rolls (5, 6), respectively one lower and one upper, intended to bear respectively against the working rolls on the opposite side to the side of the nip. According to the invention, the installation comprises a system for extracting the working rolls and the support rolls provided, on the drive side of the said rolling mill and comprising: - an actuator (70) configured to push the rolls out of the roll stand of the rolling mill when the rolls are being extracted, – a coupling head (8), secured to the said actuator (70), situated in a position of opening of the roll stand (2), comprising - first coupling means configured to drive the chock (40) or the end of the lower working roll (4), on the rolling-mill drive side, - second coupling means configured to drive the chock of the lower support roll (6), on the rolling-mill drive side. Advantageously, the first coupling means and the second coupling means of the said extraction system are configured in such a way as to allow successive extractions of the working rolls (3, 4) and then of the support rolls (5, 6) from the roll stand (2) using the one same actuator of the extraction system. The invention also relates to a rolling mill installation for carrying out the method of the invention.
IPC 8 full level
B21B 31/10 (2006.01)
CPC (source: EP US)
B21B 31/10 (2013.01 - EP US); B21B 31/103 (2013.01 - EP US); B21B 31/106 (2013.01 - EP US); B21B 2013/025 (2013.01 - EP US); B21B 2203/32 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
FR 3050128 A1 20171020; FR 3050128 B1 20180907; CN 109153054 A 20190104; CN 109153054 B 20201229; EP 3445506 A1 20190227; EP 3445506 B1 20200909; ES 2839699 T3 20210705; US 11358193 B2 20220614; US 2019091744 A1 20190328; WO 2017182406 A1 20171026
DOCDB simple family (application)
FR 1653411 A 20160418; CN 201780029871 A 20170414; EP 17717717 A 20170414; EP 2017059057 W 20170414; ES 17717717 T 20170414; US 201716094793 A 20170414