EP 0739694 A1 19961030 - Longitudinal perforating device for paper printing and/or processing machines
Title (en)
Longitudinal perforating device for paper printing and/or processing machines
Title (de)
Vorrichtung zum Längsperforieren für Drucker und/oder Papierverarbeitungsmaschinen
Title (fr)
Dispositif de perforation longitudinale pour imprimantes et/ou machines pour le traitement du papier
Publication
Application
Priority
IT FI950078 A 19950424
Abstract (en)
A device (4) for the intermittent, longitudinal perforation of a continuous web of paper (1) which moves across a longitudinal perforation group (2) comprising a countersupport roller (3). The group also comprises a circular tool (5) with a sharp, toothed edge which is mounted in a rotatable manner on a support (7) and is suited to roll on the roller (3), producing a longitudinal perforation (6) on the paper (1). The support (7) is able to simultaneously carry out a translation movement along the bar and a rotation movement with respect to the bar's axis. The rotation movement greatly facilitates the rapid approach of the tool (5) with respect to the paper (1) and roller (3), in a direction tangential to them, upon the action of actuators (12, 13, 23, 24). It is thus possible to intermittently perforate the paper without wear on the tool since it rotates at a surface speed equal to that of the countersupport roller (3) and the paper (1). <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
Citation (search report)
- [X] DE 9211522 U1 19921022
- [Y] US 1887331 A 19321108 - SHOMAKER WESLEY P
- [Y] US 5367934 A 19941129 - MACNIEL DOUGLAS K [US]
- [Y] DE 8600460 U1 19860220
- [Y] BE 904927 A 19861016 - MAHER PIERCE
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0739694 A1 19961030; IT 1278652 B1 19971127; IT FI950078 A0 19950424; IT FI950078 A1 19961024
DOCDB simple family (application)
EP 96830233 A 19960424; IT FI950078 A 19950424