EP 0988943 A3 20021218 - Rotary cutting cylinder
Title (en)
Rotary cutting cylinder
Title (de)
Drehbare Messerwalze
Title (fr)
Cylindre pour la coupe rotative
Publication
Application
Priority
DE 19841834 A 19980912
Abstract (en)
[origin: US6205899B1] A rotatable knife roll with at least one foil knife secured on a portion of the body of the roll and having a sharp and endless cutting edge closed within itself to cut out window openings. There are breakthroughs for suction apertures arranged within the cutting edge. There is at least one suction-air control valve arranged on the face side of the roll body. The valve is rotatable relative to this portion of the roll. The suction-air control valve has at least one suction-air-control channel and at least one fresh-air channel. There are suction apertures for temporarily retaining a letter envelope blank over a suction and transport angle zone alpha, and for retaining a piece of material cut out by the foil knife across a suction and transport angle zone beta. The suction apertures are arranged in rows to which suction channels are allocated in the part of the roll body. The suction apertures are connected with the suction-air control channel and the fresh-air channel by the suction channels for conducting air. A 3/3-way valve is associated with the suction channel upstream of the suction-air control valve, with an open position for each suction and transport angle zones alpha, beta, and one common closing position for suction and transport angle zones alpha and beta.
IPC 1-7
IPC 8 full level
B26D 7/02 (2006.01); B26D 1/36 (2006.01); B26D 7/18 (2006.01); B26F 1/08 (2006.01); B26F 1/38 (2006.01); B31B 50/83 (2017.01)
CPC (source: EP US)
B26D 7/1863 (2013.01 - EP US); B26F 1/384 (2013.01 - EP US); Y10S 83/911 (2013.01 - EP US); Y10T 83/2066 (2015.04 - EP US); Y10T 83/207 (2015.04 - EP US)
Citation (search report)
- [DA] US 3172321 A 19650309 - ERNST SCHRADER
- [DA] US 4537588 A 19850827 - EHLSCHEID GUNTER [DE], et al
- [A] EP 0277268 A1 19880810 - ENVELOPPE MONTREAL INC [CA]
- [A] US 5570620 A 19961105 - OKONSKI FRANK [US], et al
- [A] US 5575187 A 19961119 - DIETERLEN PAUL E [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)
US 6205899 B1 20010327; AT E283751 T1 20041215; CA 2282069 A1 20000312; DE 19841834 A1 20000316; DE 59911175 D1 20050105; EP 0988943 A2 20000329; EP 0988943 A3 20021218; EP 0988943 B1 20041201; ES 2234187 T3 20050616; JP 2000141282 A 20000523; JP 4439627 B2 20100324
DOCDB simple family (application)
US 39425899 A 19990910; AT 99114572 T 19990724; CA 2282069 A 19990907; DE 19841834 A 19980912; DE 59911175 T 19990724; EP 99114572 A 19990724; ES 99114572 T 19990724; JP 25576099 A 19990909