EP 2000226 A1 20081210 - Improved press for extruding non-ferrous metal section members
Title (en)
Improved press for extruding non-ferrous metal section members
Title (de)
Verbesserte Presse zum Strangpressen von Profilelementen aus Nichteisenmetall
Title (fr)
Presse améliorée pour extruder des éléments à section métallique non ferreuse
Publication
Application
Priority
IT MI20071153 A 20070606
Abstract (en)
An extruding press for extruding non-ferrous metal section or profiled elements comprises an extruding punch (2) driven by hydraulic driving cylinders (3, 4), fluid-supplied by a pump controlled by at least a motor (16) having a low moment of inertia, in particular a three-phase asynchronous motor for converters. With respect to prior extruding presses for extruding non-ferrous metal section members, the inventive press provides the advantage of overcoming a conventional requirement of providing servo-valves and a related driving pump, for controlling the cylinder driving pump flow-rate or displacement. A further advantage of the inventive extruding press is that the cylinder driving pump motor is driven only as it is necessary, and is left in a rest condition as the press cylinder is in a rest condition.
IPC 8 full level
B21C 23/21 (2006.01); B21C 31/00 (2006.01)
CPC (source: EP)
B21C 23/211 (2013.01); B21C 31/00 (2013.01)
Citation (search report)
- [A] JP H01309718 A 19891214 - NIPPON ALUMINIUM MFG, et al
- [A] US 3649816 A 19720314 - JOHNES ALFRED W, et al
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 2000226 A1 20081210; EP 2000226 B1 20091021; AT E446148 T1 20091115; DE 602008000228 D1 20091203; ES 2335716 T3 20100331; IT MI20071153 A1 20081207
DOCDB simple family (application)
EP 08010226 A 20080605; AT 08010226 T 20080605; DE 602008000228 T 20080605; ES 08010226 T 20080605; IT MI20071153 A 20070606