EP 4139236 A1 20230301 - ROLL UNWINDER, WEB-FED PRINTING PRESS AND METHOD FOR OPERATING A ROLL UNWINDER
Title (en)
ROLL UNWINDER, WEB-FED PRINTING PRESS AND METHOD FOR OPERATING A ROLL UNWINDER
Title (de)
ROLLENABWICKLER, ROLLENDRUCKMASCHINE SOWIE VERFAHREN ZUM BETREIBEN EINES ROLLENABWICKLERS
Title (fr)
DÉROULEUR DE ROULEAU, PRESSE D'IMPRESSION À BOBINES ET PROCÉDÉ DE FONCTIONNEMENT D'UN DÉROULEUR DE ROULEAU
Publication
Application
Priority
- DE 102020118023 A 20200708
- EP 2021056333 W 20210312
Abstract (en)
[origin: WO2022008106A1] A roll unwinder (02) for flying-splice roll changeover comprises at least one roll station for holding a first material roll (03), which is to be unwound at the time, and a roll station for holding a second material roll (03'), which is to be unwound once roll changeover has taken place, also comprises a severing tool (14), which can be used to sever a first web (B) unwound from the first material roll (03), and further comprises a pressure-exerting element (13), which can be used to press the first web (B), which is to be unwound at the time, onto the lateral surface of the second material roll (03'), wherein a supporting device (16) is provided, and this supporting device can be transferred from a rest state into an operating state, in which the web (B), which is to be unwound at the time, is supported by the supporting device, at least at the point in time of the severing operation, in the region of the web path at a location which is situated in the web path between the first material roll (03), which is to be unwound, and the location at which the pressure-exerting element (13) interacts with the web (B).
IPC 8 full level
B65H 19/18 (2006.01); B65H 19/20 (2006.01)
CPC (source: EP US)
B41J 15/16 (2013.01 - US); B65H 19/181 (2013.01 - EP US); B65H 19/20 (2013.01 - EP US); B65H 2301/46154 (2013.01 - EP US); B65H 2301/46172 (2013.01 - EP US); B65H 2404/551 (2013.01 - EP); B65H 2404/693 (2013.01 - EP US); B65H 2511/13 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102020118023 A1 20220113; CN 115803274 A 20230314; CN 115803274 B 20230825; EP 4139236 A1 20230301; EP 4139236 B1 20240306; US 11840414 B2 20231212; US 2023192431 A1 20230622; WO 2022008106 A1 20220113
DOCDB simple family (application)
DE 102020118023 A 20200708; CN 202180044104 A 20210312; EP 2021056333 W 20210312; EP 21712469 A 20210312; US 202118011910 A 20210312