EP 0467020 B1 19931118 - Device for limiting the pressure of a tool with a punch and a die.
Title (en)
Device for limiting the pressure of a tool with a punch and a die.
Title (de)
Druckbegrenzungsvorrichtung für ein Werkzeug mit Stempel und Matrize.
Title (fr)
Dispositif de limitation de pression pour un outil avec poinçon et matrice.
Publication
Application
Priority
CH 236290 A 19900716
Abstract (en)
[origin: EP0467020A1] The device has a plunger piston (2) and a pressure accumulator (3) which are connected to one another. On the plunger piston (2) is fixed the punch (13) of a tool. The pressure accumulator (3) is a piston accumulator with a gas space (20) and a liquid space (19) which is in communication with the chamber (4) via a valve arrangement. Furthermore, a pre-stroke valve (24) is integrated into the pressure accumulator (3). This device can be used to limit the degree of pressure which can be applied to the plunger piston. As a result, a tool (23) is protected independently over its total circumference against excessive closing pressure. <IMAGE>
IPC 1-7
IPC 8 full level
B65B 51/04 (2006.01)
CPC (source: EP)
B65B 51/04 (2013.01)
Designated contracting state (EPC)
AT CH DE DK ES FR GB IT LI SE
DOCDB simple family (publication)
EP 0467020 A1 19920122; EP 0467020 B1 19931118; AT E97372 T1 19931215; CH 679903 A5 19920515; DE 59100605 D1 19931223; ES 2046815 T3 19940201
DOCDB simple family (application)
EP 91106027 A 19910415; AT 91106027 T 19910415; CH 236290 A 19900716; DE 59100605 T 19910415; ES 91106027 T 19910415