EP 2104578 A2 20090930 - DIE CUSHION DEVICE COMPRISING A MODULAR HYBRID DRIVE UNIT
Title (en)
DIE CUSHION DEVICE COMPRISING A MODULAR HYBRID DRIVE UNIT
Title (de)
ZIEHKISSENVORRICHTUNG MIT MODULAREM HYBRIDANTRIEB
Title (fr)
DISPOSITIF DE COUSSIN HYDRAULIQUE À ENTRAÎNEMENT HYBRIDE MODULAIRE
Publication
Application
Priority
- DE 2007002167 W 20071130
- DE 102006057053 A 20061130
- DE 102007016359 A 20070403
Abstract (en)
[origin: WO2008064669A2] The invention relates to a die cushion device (50) for a forming press (51) for generating a blank retaining force (F53) between a bottom die (5) and a top die (3). Said die cushion device (50) comprises at least one hybrid drive unit (52) which acts upon at least one blank holder (4) of the bottom die (5) and is formed by at least one first drive unit and at least one second drive unit. The first drive unit and the second drive unit form a die cushion module (9) that encompasses a part, by means of which the blank holder (4) can be moved upward and downward by at least one of the drive units. A downward pressure that can be transmitted from the top die (3) to said part and causes a descending movement can be blocked or decelerated only by the first drive unit in order to prevent the second drive unit from being overloaded, the part being disconnectable from the second drive unit during the descending movement.
IPC 8 full level
B21D 24/02 (2006.01); B21D 24/04 (2006.01); B21D 24/10 (2006.01)
CPC (source: EP)
B21D 24/02 (2013.01)
Citation (search report)
See references of WO 2008064669A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008064669 A2 20080605; WO 2008064669 A3 20080814; AT E465826 T1 20100515; CN 101594946 A 20091202; CN 101594946 B 20130501; DE 502007003635 D1 20100610; EP 2104578 A2 20090930; EP 2104578 B1 20100428; ES 2343700 T3 20100806
DOCDB simple family (application)
DE 2007002167 W 20071130; AT 07856049 T 20071130; CN 200780043901 A 20071130; DE 502007003635 T 20071130; EP 07856049 A 20071130; ES 07856049 T 20071130