Back to results
US 7,707,917 B2Granted
Method and devices for severing sheets from and/or feeding a web into a subsequent processing stage
AssigneeKoenig & Bauer Aktiengesellschaft
InventorHolger Ratz
Life of this patent
Estimating the term…
Abstract
A web is fed into a sheet severer prior to its entry into a subsequent processing stage. The sheets, which have been severed from the web are then cut into required product sections in a cross-cutter which is associated with this subsequent processing stage. In order to achieve an accurately registered severing process, using the sheet severer, it is triggered by a signal which represents the phase position of the cross-cutter. The sheet severer is thus phase-correlated in relation to the phase position of the cross-cutter.
Claims22
A method for feeding a continuous web including;
- providing a continuous web travel path extending in a web travel direction;
- providing a web transverse cutting device located at a termination of said continuous web travel path;
- using said web transverse cuffing device for cutting said continuous web into product sections;
- providing a first web severing device before, in said web travel direction, and in said web travel path, said web transverse cutting device;
- generating a signal evidencing a phase relationship of said web at said web transverse cutting device;
- providing a signal requiring an emergency stop of travel of said web in said web travel direction;
- severing said web prior to said web transverse cutting device in response to said emergency web stop signal;
- accomplishing a phase-controlled severing of said web after said emergency severing of said web;
- generating a fresh web start resulting from said phase-controlled severing of said web after said emergency severing of said web;
- and
- directing said fresh web start to said web transverse cutting device.
8 more elements
Dependencies are inferred from the claim text.