EP 4121230 A1 20230125 - A MANDREL ASSEMBLY FOR THICKENING BRIM PORTIONS IN AN INNER SURFACE OF A TUBE
Title (en)
A MANDREL ASSEMBLY FOR THICKENING BRIM PORTIONS IN AN INNER SURFACE OF A TUBE
Title (de)
DORNANORDNUNG ZUR VERDICKUNG VON RANDABSCHNITTEN IN EINER ROHRINNENFLÄCHE
Title (fr)
ENSEMBLE MANDRIN D'ÉPAISSISSEMENT DE PARTIES BORD DANS UNE SURFACE INTERNE D'UN TUBE
Publication
Application
Priority
- IN 202031011795 A 20200318
- IB 2021052276 W 20210318
Abstract (en)
[origin: WO2021186386A1] The present disclosure discloses a mandrel assembly (100) for thickening brim portion (202) in an inner surface (201) of a tube (200), particularly tubes that may be used in components of an automobile. The mandrel assembly (100) includes a central core element (1), which is configured to rigidly support a plurality of segments (2) on an outer surface to accommodate the tube (200) along its length. The plurality of segments (2), disposable between the central core element (1) and the inner surface (201) of the tube (200), at least one end of each of the plurality of segments (2) is defined with a forming region (3), wherein the brim portion (202) of the tube (200) is deformable along the forming region (3) of the plurality of segments (2). Since, the mandrel assembly (100) is detachable and the tube (200) can be thickened simultaneously from both the ends.
IPC 8 full level
B21J 5/08 (2006.01); B21J 13/02 (2006.01); B21K 1/06 (2006.01); B21K 21/12 (2006.01)
CPC (source: EP)
B21J 5/08 (2013.01); B21J 13/025 (2013.01); B21K 1/063 (2013.01); B21K 21/12 (2013.01)
Citation (search report)
See references of WO 2021186386A1
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021186386 A1 20210923; BR 112021018992 A2 20221011; CO 2021012473 A2 20211029; EP 4121230 A1 20230125; JP 2022529305 A 20220621; JP 7237181 B2 20230310
DOCDB simple family (application)
IB 2021052276 W 20210318; BR 112021018992 A 20210318; CO 2021012473 A 20210923; EP 21717528 A 20210318; JP 2021551604 A 20210318