EP 3713689 A4 20210127 - DEVICE FOR A PIPE BENDING TOOL

Title (en)

DEVICE FOR A PIPE BENDING TOOL

Title (de)

VORRICHTUNG FÜR EIN ROHRBIEGEWERKZEUG

Title (fr)

DISPOSITIF POUR UN OUTIL DE CINTRAGE DE TUYAUX

Publication

EP 3713689 A4 20210127 (EN)

Application

EP 18881500 A 20181123

Priority

SE 1700288 A 20171123
SE 2018000033 W 20181123

Abstract (en)

[origin: WO2019103672A1] The present invention relates to a tube bending tool (1) comprising support surfaces (2, 2', 2''), between which a tube (3) which shall be bent, is placed for bearing on and pressing against portions of the mantle surface (4, 4') of the tube (3) in providing a bend (5), said tube bending tool (1) has a pressure exerting unit (6) comprising at least one extension (8) displaceable forwards against the tube (3), where a convex bend bearing surface in the form of a shablon (10) is provided to press against the mantle surface of the tube (3). The front portion (9) has two elongated elements (12, 12'), which are cross-laid and provided flexible in their first ends (13, 13') in order to during bending press in a direction against the bending radius center, whereby different radius of the bend (5) on selected places can be done and just before a wanted bending angle has been reached a tension belt (25) fixed in two coupling links (26, 26'), so that this is can be tensioned against the side of the bent tube (3) and makes it possible that a distance between the supporting elements (15, 15') on existing supporting axis (18, 18') is decreased, which means that a spring back in the bent tube (3) disappears so that the same is loosen from the bending tool (1).

IPC 8 full level

B21D 7/06 (2006.01); B21D 7/02 (2006.01); B21D 7/04 (2006.01)

CPC (source: EP SE)

B21D 7/02 (2013.01 - EP SE); B21D 7/04 (2013.01 - EP SE); B21D 7/063 (2013.01 - EP SE)

Citation (search report)

[X] US 2405931 A 19460820 - HERBERT ABRAMSON JOHN, et al
[X] CN 2406744 Y 20001122 - ZHUANG ZONGCHAO [CN]
[X] GB 650637 A 19510228 - BABCOCK & WILCOX LTD, et al
[A] SE 1500116 A1 20160907 - JANOS KELLER [SE]
See references of WO 2019103672A1

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

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

WO 2019103672 A1 20190531; EP 3713689 A1 20200930; EP 3713689 A4 20210127; SE 1700288 A1 20190524; SE 541489 C2 20191015

DOCDB simple family (application)

SE 2018000033 W 20181123; EP 18881500 A 20181123; SE 1700288 A 20171123