EP 2867009 B1 20160511 - MACHINE PRESS
Title (en)
MACHINE PRESS
Title (de)
MASCHINENPRESSE
Title (fr)
PRESSE
Publication
Application
Priority
- DE 102012013098 A 20120630
- EP 2013001678 W 20130607
Abstract (en)
[origin: WO2014000858A1] In a machine press with a lower and an upper tool support, a closed hydraulic drive system acts upon the upper tool support. This system has at least one hydraulic drive unit (1), which for its part comprises at least one hydraulic cylinder-piston unit (2) and at least one hydraulic assembly (6) acting upon this unit and supplied from a storage reservoir (20). A base pressure above environmental pressure constantly prevails in the storage reservoir. The storage reservoir (20) is designed as a cylinder store (22) with a hydraulic chamber (21) defined by a cylinder (23) and a piston unit (24) displaceably guided therein. The piston unit is acted upon on its side functionally opposite the hydraulic chamber by a hydraulic fluid chamber (25) which for its part is connected to a high-pressure gas store (26). The active surface (27) of the hydraulic fluid chamber (25) on the piston unit is small compared to the active surface (28) of the hydraulic chamber (21) on the piston unit (24).
IPC 8 full level
B30B 15/16 (2006.01); F15B 1/24 (2006.01); F15B 1/26 (2006.01); F15B 3/00 (2006.01); F15B 11/072 (2006.01)
CPC (source: EP US)
B30B 15/163 (2013.01 - EP US); B30B 15/165 (2013.01 - US); F15B 1/265 (2013.01 - EP US); F15B 2211/20515 (2013.01 - EP US); F15B 2211/20569 (2013.01 - EP US); F15B 2211/625 (2013.01 - EP US); F15B 2211/7055 (2013.01 - EP 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 102012013098 A1 20140102; DE 102012013098 B4 20140807; CN 104395064 A 20150304; CN 104395064 B 20170524; EP 2867009 A1 20150506; EP 2867009 B1 20160511; JP 2015522422 A 20150806; JP 6012863 B2 20161025; US 10421246 B2 20190924; US 2015107466 A1 20150423; WO 2014000858 A1 20140103
DOCDB simple family (application)
DE 102012013098 A 20120630; CN 201380034372 A 20130607; EP 13728967 A 20130607; EP 2013001678 W 20130607; JP 2015518880 A 20130607; US 201414584332 A 20141229