US 7,597,282 B2Granted

Changeover apparatus and method for changing over winding of web

AssigneeFUJIFILM Corporation

InventorsHironobu Endo, Yoshihito Matsumura

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Abstract

A drum support arm supports a cutting drum with a sector cross section and a receiving drum with a circular cross section, and moves between a web winding changeover position for causing the receiving drum to contact a core and a spacing position for keeping the receiving drum away from the core. The guide roller moves between an approaching position for lifting a web from the receiving drum and a retracted position for causing the web contact a peripheral surface of the receiving drum. When the drum support arm moves to the web winding changeover position, the guide roller moves to the retracted position, and when the drum support arm moves to the spacing position, the guide roller moves to the approaching position. When the drum support arm is set to the web winding changeover position, the cutting drum rotates once to cut the web. A front end of the web formed by cutting is pressed against the core by the receiving drum and wound around the periphery of the core.

Claims8

Dependent claims

A web winding changeover apparatus provided in a turret winder having a first winding spindle and a second winding spindle, a first core being removably attached to said first winding spindle, a second core being removably attached to said second winding spindle, and said web winding changeover apparatus changing over from a web winding around said first core to said second core, comprising:

a cutting drum disposed on a first side with respect to a transporting path of said web and having a cutter for cutting said web in a width direction thereof;
a receiving drum having a cross section of a circular shape disposed on a second side with respect to said transporting path;
a drum support arm for supporting each of said cutting drum and said receiving drum such that said cutting drum and said receiving drum rotate while peripheral surfaces of said cutting drum and said receiving drum contact each other at the time of cutting said web;
a shifter for shifting said drum support arm between a web winding changeover position for pressing a peripheral surface of said receiving drum against said second core and a spacing position for keeping said peripheral surface of said receiving drum away from said second core;
and
a guide roller shifting between an approaching position and a retracted position, in said approaching position said guide roller approaching said transporting path to guide said web while preventing said web from contacting said receiving drum, and in said retracted position said guide roller retracting from said transporting path to cause said web to contact said receiving drum.

3 more elements

A web winding changeover method for changing over from a web winding around a first core to a second core, said first core being removably attached to a first winding spindle of a turret winder, said second core being removably attached to a second winding spindle of said turret winder, said web winding changeover method comprising the steps of:

retracting said first core having a web roll and setting said second core to a winding position simultaneously,
moving a drum support arm supporting a cutting drum having a cross section of a sector shape and a receiving drum having a cross section of a circular shape from an initial position to a preparation position in front of a web winding changeover position, in said preparation position said receiving drum being kept away from said second core;
moving a guide roller from an approaching position to a retracted position, in said approaching position said guide roller lifting said web such that said web does not contact with a peripheral surface of said receiving drum, and in said retracted position said web contacting with said peripheral surface of said receiving drum;
rotating said receiving drum in accordance with a transporting speed of said web during movement of said guide roller;
moving said drum support arm to said web winding changeover position, in which said web is nipped between said receiving drum and said second core;
rotating said cutting drum once in contact with said receiving drum to cut said web, said cutting drum stopping at a position where said cutout portion faces toward said receiving drum after cutting of said web;
fixing a front end of said web formed by cutting to a periphery of said second core and starting winding of said web around said second core;
moving said guide roller to said approaching position;
and
moving said drum support arm to said initial position.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/047,574Filed 13 Mar 2008
Priority: JP 2007-06914716 Mar 2007
Published: US 2008/0223973 A118 Sep 2008
Granted: 6 Oct 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B65H 19/2215
The web roll being driven by a winding mechanism of the centre or core drive type: turret-type with two roll supports
B65H 19/26
In winding mechanisms or in connection with winding operations: cutting-off the web running to the wound web roll
B65H 2408/23152
Specified by number of arms: with two arms
B65H 2701/1752
Plastic: polymer film