Global Patent Index - EP 0377484 B1

EP 0377484 B1 19961113 - Web slitting machine

Title (en)

Web slitting machine

Title (de)

Vorrichtung zum Längsschneiden von Bahnen

Title (fr)

Dispositif pour couper des bandes en long

Publication

EP 0377484 B1 19961113 (EN)

Application

EP 90300001 A 19900102

Priority

US 29329889 A 19890103

Abstract (en)

[origin: EP0655302A2] A web slitting machine (10) for cutting a web or roll of material includes an upper carriage assembly (16) joined to a lower blade holder assembly (18) by a selectively removable guide key (38) which is milled to provide a predetermined cant angle for the blade (20). The blade (20) is lowered into position by a piston (54, 58) which is rectangular and includes a torsion-resisting sleeve (60a, 60b) to prevent rotation of the piston about its vertical axis. A pneumatic control provides a plurality of control modes whereby the blade (20) may be raised and lowered with or without locking the upper carriage assembly (16) to its transverse bar (14) and vice-versa. A unique side shift adjustment is provided whereby the blade (20) may be shifted to a half-stroke position and the upper carriage (16) locked when the blade is positioned against a lower knife (22). This ensures that the pressure of the blade (20) against the knife (22) is the pressure exerted at the mid point of the stroke. A parallelogram linkage (210, 212) biased by a spring (224) can provide a shock absorber for maintaining blade/knife contact in the presence of webs moving at high speed. <IMAGE>

IPC 1-7

B26D 7/26; B26D 5/04

IPC 8 full level

B26D 1/24 (2006.01); B26D 5/04 (2006.01); B26D 7/26 (2006.01)

CPC (source: EP)

B26D 5/04 (2013.01); B26D 7/2621 (2013.01); B26D 7/2635 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0377484 A2 19900711; EP 0377484 A3 19910918; EP 0377484 B1 19961113; AT E145167 T1 19961115; DE 69029097 D1 19961219; DE 69029097 T2 19970306; DE 69033943 D1 20020516; DE 69033943 T2 20021114; EP 0655302 A2 19950531; EP 0655302 A3 19961227; EP 0655302 B1 20020410; JP 2993688 B2 19991220; JP H02224996 A 19900906

DOCDB simple family (application)

EP 90300001 A 19900102; AT 90300001 T 19900102; DE 69029097 T 19900102; DE 69033943 T 19900102; EP 95200073 A 19900102; JP 34497689 A 19891229