EP 2585236 B1 20220720 - METHOD FOR STRAIGHTENING BY STRETCH-BENDING
Title (en)
METHOD FOR STRAIGHTENING BY STRETCH-BENDING
Title (de)
VERFAHREN ZUM STRECKBIEGERICHTEN
Title (fr)
PROCÉDÉ DE DRESSAGE PAR TRACTION ET FLEXION
Publication
Application
Priority
- DE 102010024714 A 20100623
- EP 2011060394 W 20110622
Abstract (en)
[origin: WO2011161134A1] The invention relates to a method and stretch-bending straightener for straightening metal strips (1) by stretch-bending, comprising a plurality of straightening rolls (5a, 6a, 7a, 8a) which are arranged behind one another in the strip flow direction (D) and spaced from one another in the strip flow direction (D), wherein the strip (1) subject to tensile stress below the limit of elasticity is alternately bent around the straightening rolls (5a, 6a, 7a, 8a), undergoing plastic elongation, wherein a deflecting roll (5b, 6b, 7b) is arranged upstream of one or more straightening rolls (5a, 6a, 7a), respectively, wherein said straightening rolls can be adjusted relative to the strip (1) and wherein said deflecting roll has a larger diameter than the respective downstream straightening roll. Said method and said system are characterized in that, in order to vary the immersion depth, the straightening rolls (5a, 6a, 7a) can be adjusted relative to the associated deflecting roll (5b, 6b, 7a) such that the free strip length (F) between the run-off point (9) of the strip (1) from the deflecting roll to the run-on point (10) of the strip (1) onto the associated straightening roll does not exceed a predefined maximum value, above which longitudinal undulations of the strip form. The system is preferably designed such that, as the immersion depth and/or the angle of contact are varied, the free strip length never exceeds the maximum value over the entire adjusting range.
IPC 8 full level
B21D 1/05 (2006.01)
CPC (source: EP KR US)
B21B 37/00 (2013.01 - KR); B21D 1/02 (2013.01 - US); B21D 1/05 (2013.01 - EP KR US); B21D 41/026 (2013.01 - US); B21D 41/028 (2013.01 - 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)
DE 102010024714 A1 20111229; DE 102010024714 B4 20140925; DE 102010024714 C5 20181018; CN 102971096 A 20130313; CN 102971096 B 20150204; EP 2585236 A1 20130501; EP 2585236 B1 20220720; KR 101851028 B1 20180420; KR 20130041132 A 20130424; RU 2013102863 A 20140727; RU 2528528 C2 20140920; US 2013111962 A1 20130509; US 9174257 B2 20151103; WO 2011161134 A1 20111229
DOCDB simple family (application)
DE 102010024714 A 20100623; CN 201180030624 A 20110622; EP 11729095 A 20110622; EP 2011060394 W 20110622; KR 20137001796 A 20110622; RU 2013102863 A 20110622; US 201113697508 A 20110622