US 7,404,529 B2Granted

Rewinding machine for producing logs of wound web material and relative method

AssigneeFabio Perini S.p.A.

InventorsGuglielmo Biagiotti, Mauro Gelli

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Abstract

The rewinding machine includes a first winding roller; a second winding roller; a nip defined between the first and second winding rollers, through which the web material is fed; a roller surface, extending upstream of the nip in relation to the direction of feed of the web material and defining, with the first winding roller, a channel into which winding cores are fed, the channel having an inlet and an outlet; a feeder to feed winding cores into the channel; and a severing device to sever the web material upon termination of winding a log. The severing device is disposed to operate on the web material in a position upstream of the inlet end of the channel, in relation to the direction of feed of the web material. The first winding roller has suction openings on its cylindrical surface. Moreover, between the position in which the severing device operates and the inlet of the channel, a suction box is provided inside the first winding roller.

Claims20

Dependent claims

A rewinding machine to form logs of wound web material, comprising:

a first winding roller;
a second winding roller;
a nip defined between said first winding roller and said second winding roller, through which said web material is fed;
a rolling surface, extending upstream of said nip in relation to the direction of feed of the web material and defining, with the first winding roller, a channel into which winding cores are fed, said channel having an inlet and an outlet;
a feeder to feed winding cores into said channel;
a severing device to sever the web material upon termination of winding a log;
wherein said severing device is disposed to operate on the web material in a position upstream of the inlet end of said channel, in relation to the direction of feed of the web material;
said first winding roller having suction openings on a cylindrical surface thereof;
and between a position in which said severing device operates and the inlet of said channel a suction box is provided inside said first winding roller, an initial edge and a final edge of the web material produced by severing performed by the severing device being held via the suction openings on said first winding roller to transfer the initial edge to a new core being fed into said channel.

6 more elements

Method for producing logs of wound web material, comprising:

feeding web material along a feed path;
arranging a first winding roller and a second winding roller so as to define between said first winding roller and said second winding roller a nip through which to feed the web material;
arranging a rolling surface extending upstream of said nip in relation to a direction of feed of the web material along said feed path, said rolling surface and said first winding roller defining a channel into which winding cores are fed, said channel having an inlet and an outlet;
winding a first log around a first winding core;
upon termination of winding said first log, severing the web material to create an initial edge and a final edge, feeding a new winding core, anchoring the initial edge to the new core and starting to wind a second log;
wherein
the initial edge and the final edge are temporarily held on a surface of the winding roller;
said new core is fed into said channel synchronously to movement of the initial edge of the web material, so that a contact point between the new core and the web material driven around said first winding roller is upstream of the initial edge in relation to the direction of feed of the web material along said path.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/641,655Filed 20 Dec 2006 · continuation
Priority: IT FI2002A01229 Jul 2002
Published: US 2007/0095967 A13 May 2007
Granted: 29 Jul 2008
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

B65H 19/2269
The web roll being driven by a winding mechanism of the nip or tangential drive type: cradle
B65H 19/26
In winding mechanisms or in connection with winding operations: cutting-off the web running to the wound web roll
B65H 19/267
Cutting-off the web running to the wound web roll: by tearing or bursting
B65H 19/28
In winding mechanisms or in connection with winding operations: attaching the leading end of the web to the replacement web-roll core or spindle

Family

Application10/520,813Parent of this continuation · filed 1 Feb 2005
US 7,172,151 B2Parent of this continuation · filed 6 Feb 2007
US 2007/0095967 A1Pre-grant publication · published 3 May 2007
US 2006/0011767 A1Published application
US 7,404,529 B2This patent

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