EP 2036711 B1 20160817 - Drive device for a bending press
Title (en)
Drive device for a bending press
Title (de)
Antriebsvorrichtung für eine Biegepresse
Title (fr)
Dispositif d'entraînement pour une presse plieuse
Publication
Application
Priority
AT 14282007 A 20070912
Abstract (en)
[origin: EP2036711A1] The device (1) has a hydraulic system (18) provided with a ring circuit (44) with a hydraulic pump (47). The hydraulic system forms a closed flow circuit for pressure mediums with pipelines (51, 53) of the ring circuit between pressure chambers (22, 23) of dual-side working differential pressure cylinders (12) and the pump. The closed flow circuit is switched by 3/2-way control valves (39, 41, 58). A pressure accumulator (57) e.g. piston accumulator, is selectively flow-connected with one of the pipelines by the valves for accumulating or discharging of storage volume of the mediums.
IPC 8 full level
B21D 5/02 (2006.01); B30B 15/16 (2006.01); F15B 1/02 (2006.01); F15B 7/00 (2006.01)
CPC (source: EP US)
B30B 15/16 (2013.01 - EP US); B30B 15/163 (2013.01 - EP US); F15B 7/006 (2013.01 - EP US); F15B 11/024 (2013.01 - EP US); F15B 2211/20515 (2013.01 - EP US); F15B 2211/20561 (2013.01 - EP US); F15B 2211/212 (2013.01 - EP US); F15B 2211/625 (2013.01 - EP US); F15B 2211/7053 (2013.01 - EP US); F15B 2211/88 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2036711 A1 20090318; EP 2036711 B1 20160817; AT 505724 A1 20090315; AT 505724 B1 20100615; CN 101835601 A 20100915; CN 101835601 B 20130626; US 2010212521 A1 20100826; US 8342086 B2 20130101; WO 2009033199 A1 20090319
DOCDB simple family (application)
EP 08005440 A 20080322; AT 14282007 A 20070912; AT 2008000325 W 20080912; CN 200880113317 A 20080912; US 73362308 A 20080912