EP 0968775 A2 20000105 - Self-centering expanding shaft with a composite system
Title (en)
Self-centering expanding shaft with a composite system
Title (de)
Selbstzentrierender spreizbarer Wickeldorn
Title (fr)
Mandrin de bobinage expansible à auto-centrage
Publication
Application
Priority
IT MI980457 U 19980702
Abstract (en)
The present invention relates to a self-centering expanding shaft with a composite system - of the type comprising a structural cylinder, equipped with a pneumatic expanding system to block a reel and housing at least one pneumomechanical module to center the reel, said pneumomechanical module comprising a pair of opposed slidable thrust elements (3), coupled with gripping elements (4) apt to be extracted from and withdrawn into said structural cylinder (1), and two pressure chambers (8a,8b) positioned at its ends, in which said two pressure chambers (8a,8b) are connected through a single pneumatic line (10) which crosses the two thrust elements (3), the extraction of said gripping elements (4) being obtained by supplying compressed air into said compression chambers (8a,8b), and in that, at least an elastic element (7) is provided to act on said thrust elements (3) so as to reset the conditions of rest. <IMAGE>
IPC 1-7
IPC 8 full level
B21C 47/30 (2006.01); B65H 75/24 (2006.01)
CPC (source: EP US)
B21C 47/30 (2013.01 - EP); B65H 75/2437 (2021.05 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0968775 A2 20000105; EP 0968775 A3 20020123; IT 244102 Y1 20020307; IT MI980457 U1 20000102
DOCDB simple family (application)
EP 99112546 A 19990701; IT MI980457 U 19980702