EP 0406792 B1 19940427 - Control switch connection for the upward stroke of the pressure cheek of a deep drawing device.
Title (en)
Control switch connection for the upward stroke of the pressure cheek of a deep drawing device.
Title (de)
Regelschaltung für den Hochlauf der Druckwange eines Ziehapparats.
Title (fr)
Couplage de réglage pour la course supérieure pour la jumelle de pression d'un dispositif d'emboutissage.
Publication
Application
Priority
DE 3922212 A 19890706
Abstract (en)
[origin: EP0406792A1] The control circuit for the upwards stroke of the pressure cheek of a deep drawing device (1) provides a parallel circuit (16) of at least two two-way cartridge valves (17) for the blocking spaces of the upward motion. These cartridge valves can be switched via directional control valves as a function of the punch travel. Connected in parallel with these circuits there is in the case of each blocking space a further two-way valve (26), which can be controlled overall via a pilot control unit (31) for the initiation and adjustment of the upward stroke phase of the pressure cheek. <IMAGE>
IPC 1-7
IPC 8 full level
B21D 24/02 (2006.01); B21D 24/08 (2006.01); B21D 24/14 (2006.01)
CPC (source: EP)
B21D 24/08 (2013.01); B21D 24/14 (2013.01)
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0406792 A1 19910109; EP 0406792 B1 19940427; DE 3922212 A1 19910117; DE 59005507 D1 19940601; ES 2053020 T3 19940716
DOCDB simple family (application)
EP 90112668 A 19900703; DE 3922212 A 19890706; DE 59005507 T 19900703; ES 90112668 T 19900703