US 7,117,775 B2Granted

Method and apparatus for transferring a paper web

AssigneeVoith Paper Patent GmbH

InventorAllan Broom

Life of this patent

Estimating the term…

Loading patent…

Abstract

A method of, and apparatus for, transferring a web, in particular a paper web or cardboard web or an insertion tail severed from the web, from a web-discharging web-guiding surface, via a web conveying apparatus, to the next structural unit of a machine for producing and/or handling the continuous paper web or cardboard web, the insertion tail is detached from the web-guiding surface by way of at least one brief high-energy air jet. The present invention provides that in the case of a web of high grammage, immediately once the tail has been detached from the web-guiding surface, the tail, which has been severed at least on a preliminary basis, is completely severed by an additional mechanical severing arrangement and, by way of its newly formed start, gripped, and passed on, by way of the web conveying apparatus.

Claims4

Dependent claims

A method of transferring a continuous web of a machine for at least one of producing and handling the web, comprising the steps of:

detaching the tail from a web-discharging web-guiding surface with at least one brief high-energy air jet;
providing a low-pressure chamber connected to said web-discharging web-guiding surface, and at least one high-pressure chamber located adjacent said low-pressure chamber;
rotating an additional mechanical severing arrangement including a first rotating blade driven in a first blade rotation and a second rotating blade driven in a second blade rotation;
completely severing the tail, in the case of a web of high grammage, by said mechanical severing arrangement;
facilitating a movement of a cut web with said at least one high-pressure chamber;
locating a dedicated drive of said mechanical severing arrangement within said low-pressure chamber;
and
transferring the web from said web-discharging web-guiding surface via a web conveying apparatus to a next structural unit.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/911,873Filed 5 Aug 2004 · division
Priority: 12 Dec 2002
Published: US 2005/0005747 A113 Jan 2005
Granted: 10 Oct 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

B26D 11/00
Combinations of several similar cutting apparatus
B26D 1/295
With cutting member mounted in the plane of a rotating disc, e.g. for slicing beans: for thin material, e.g. for sheets, strips or the like
B26D 5/02
Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by…
B65H 23/24
Longitudinally: by fluid action, e.g. to retard the running web

Family

Application10/317,802Parent of this division · filed 12 Dec 2002
US 2005/0005747 A1Pre-grant publication · published 13 Jan 2005
US 2004/0112192 A1Published application
US 7,089,839 B2Related patent
US 7,117,775 B2This patent

From the US filing history. Foreign family members aren’t listed.