EP 2017071 A1 20090121 - UNDERDRIVE-TYPE PRESS
Title (en)
UNDERDRIVE-TYPE PRESS
Title (de)
UNTERSETZUNGSPRESSE
Title (fr)
PRESSE A COMMANDE INFÉRIEURE
Publication
Application
Priority
- JP 2007059500 W 20070508
- JP 2006130815 A 20060509
Abstract (en)
[Object] An underdrive-type single action press capable of saving energy, saving space, and realizing high-precision formability in a well-balanced manner is provided. Particularly, a press capable of shortening a forming stroke, reducing overall height, exactly correcting the deflection of the slide or dies to improve adhesion of the dies to a workpiece, and realizing pressure equalization of a wrinkle holder is provided. [Means for Resolution] An underdrive-type press includes a forming press unit including a lower die located inside an annular wrinkle holder fixedly disposed on a bed, and a drive mechanism disposed within the bed to raise or lower a slide supporting the lower die, a slide raised or lowered by a drive mechanism loaded on the side of a crown, a die-clamping press unit including an upper die having a clamping portion pinching a workpiece in cooperation with the wrinkle holder at its peripheral edge, and a device applying a pressing force to the upper die from its back after the last stage of the descent of the slide of the die-clamping press unit and the upper die for improvements in forming precision.
IPC 8 full level
B30B 15/02 (2006.01)
CPC (source: EP US)
B21D 22/22 (2013.01 - EP US); B21D 24/12 (2013.01 - EP US); B30B 1/103 (2013.01 - EP US); B30B 1/14 (2013.01 - EP US); B30B 15/007 (2013.01 - EP US); B30B 15/061 (2013.01 - EP); B30B 15/148 (2013.01 - EP US)
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
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
EP 2017071 A1 20090121; EP 2017071 A4 20101201; BR PI0710220 A2 20110802; CN 101443183 A 20090527; JP 5005683 B2 20120822; JP WO2007138820 A1 20091001; RU 2008148309 A 20100620; RU 2401714 C2 20101020; US 2009090161 A1 20090409; WO 2007138820 A1 20071206; ZA 200809499 B 20091230
DOCDB simple family (application)
EP 07742935 A 20070508; BR PI0710220 A 20070508; CN 200780016956 A 20070508; JP 2007059500 W 20070508; JP 2008517813 A 20070508; RU 2008148309 A 20070508; US 29832107 A 20070508; ZA 200809499 A 20081106