EP 1065313 A3 20010411 - Device for separating and threading a web tail
Title (en)
Device for separating and threading a web tail
Title (de)
Vorrichtung zum Trennen und Überführen eines Einführstreifens
Title (fr)
Dispositif pour séparer et enfiler la bande directrice
Publication
Application
Priority
DE 19929927 A 19990629
Abstract (en)
[origin: EP1065313A2] The appts. (10) to cut a leader strip (12) at a web of paper or cardboard, for feeding into papermaking or paper finishing machine stages, has a cutter (16) and a transfer unit (18) to carry it to a following machine stage. The cutter (16) and transfer unit (18) are pref. mounted to a common plate (22). Before cutting, the leader strip (12) is passed to the plate (22), to be tensed for cutting, with the transfer unit (18) in front of the cutter (16) in the direction (L) of material travel. The plate (22) is mounted at a scraper beam (24). The transfer unit is an air transfer unit (18). Before cutting, the leader strip (12) is stabilized by a blown air stream at the side of the plate (22) towards the leader strip (12), at a tangent. An air guide plate (30) is after the cutter (16), in the direction (L) of travel, to apply tension to the leader strip (12), at the side of the plate (22) towards the leader (12). The air guide plate (30) is pitched at an angle to the plate (22) surface so that the leader (12) is lifted from the plate (22) surface to pass through the cutting zone of the cutter (16). At least two air guide plates (30) can be fitted, in succession on the direction (L) of paper travel. The air transfer unit (18) has a number of blowing jets, with adjustment movement. It can have a blowing tube, with a row of blower jets parallel to the tube axis, with at least some which can be adjusted, and the blowing tube can be set by rotation around its axis. Adjustable jets at the air transfer system can be used to stabilize and/or tense the leader (12). The cutter (16) gives a shear cut and/or a parallel cut. The cutter (16) has at least two cutting blades, with a setting screw adjustment at two frame sections which swing in relation to each other. The cutting blades are smooth or they can be perforated and/or toothed.
IPC 1-7
IPC 8 full level
D21G 9/00 (2006.01)
CPC (source: EP US)
D21G 9/0072 (2013.01 - EP US)
Citation (search report)
- [XAY] DE 19747835 A1 19990429 - PARZSCH JOERG [DE]
- [DY] DE 4409660 A1 19940818 - VOITH GMBH J M [DE]
- [A] DE 19713540 A1 19981008 - VOITH SULZER PAPIERMASCH GMBH [DE]
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 1065313 A2 20010103; EP 1065313 A3 20010411; EP 1065313 B1 20060705; DE 19929927 A1 20010104; DE 50013110 D1 20060817; US 6394331 B1 20020528
DOCDB simple family (application)
EP 00107676 A 20000410; DE 19929927 A 19990629; DE 50013110 T 20000410; US 58927500 A 20000608