EP 0664168 B1 19971029 - Device for deep-drawing of a sheet metal blank
Title (en)
Device for deep-drawing of a sheet metal blank
Title (de)
Vorrichtung zum Tiefziehen eines Blechzuschnittes
Title (fr)
Dispositif d'emboutissage d'un flan de tÔle
Publication
Application
Priority
FR 9400666 A 19940121
Abstract (en)
[origin: EP0664168A1] The stamping tool has a matrix formed from a cushion (2) of elastomer held in a retaining tank (1), and a lower workpiece clamp (3). A pre-former in the form of an outer slider (6) carries an upper clamp (6a) and surrounds a plunger (7). The tool heats and regulates the temperature of the elastic cushion, using tubes (22,23) for the delivery and return of a heat-carrying agent and ducts (20) inside the lower workpiece clamp, or else a crown ring made from a material with a higher level of thermal conductivity and low friction coefficient.
IPC 1-7
IPC 8 full level
B21D 22/10 (2006.01); B21D 24/04 (2006.01)
CPC (source: EP US)
B21D 22/10 (2013.01 - EP US); B21D 26/021 (2013.01 - EP US); B30B 5/02 (2013.01 - EP US); Y10S 425/014 (2013.01 - EP); Y10S 425/11 (2013.01 - EP)
Designated contracting state (EPC)
DE ES GB IT
DOCDB simple family (publication)
EP 0664168 A1 19950726; EP 0664168 B1 19971029; DE 69500933 D1 19971204; DE 69500933 T2 19980618; ES 2110814 T3 19980216; FR 2715335 A1 19950728; FR 2715335 B1 19960405; JP H0833929 A 19960206; US 5599565 A 19970204
DOCDB simple family (application)
EP 95400079 A 19950116; DE 69500933 T 19950116; ES 95400079 T 19950116; FR 9400666 A 19940121; JP 833395 A 19950123; US 37622095 A 19950120