Changeover apparatus and method for changing over winding of web

• US 7,597,282 B2
• Filed: 03/13/2008
• Issued: 10/06/2009
• Est. Priority Date: 03/16/2007
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: Endo, Hironobu, Matsumura, Yoshihito
• Primary Examiner(s): KIM, SANG K
• Application Number:
  US12/047,574
• Publication Number:
  US 20080223973A1
• Time in Patent Office: 572 Days
• Field of Search: 242/527, 2425271-5274, 2425276-5277, 2425334-5335, 242/532.3
• US Class Current: 242/527
• CPC Class Codes: B65H 19/2215 Turret-type with two roll supports
• CPC Class Codes: B65H 19/26 Cutting-off the web running to the wound web roll
• CPC Class Codes: B65H 2408/23152 with two arms
• CPC Class Codes: B65H 2701/1752 Polymer film

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.

Claims

1. 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.

2. A web winding changeover apparatus as defined in claim 1, wherein said guide roller moves to said approaching position when said drum support arm moves to said spacing position, and moves to said retracted position when said drum support arm moves to said web winding changeover position.

3. A web winding changeover apparatus as defined in claim 2, wherein said cutting drum has a cross section of a sector shape including a cutout portion, said cutout portion faces toward said transporting path of said web during winding of said web, and said cutting drum further rotates once to cut said web.

4. A web winding changeover apparatus as defined in claim 3, wherein said guide roller is present in said cutout portion of said cutting drum when being set to the approaching position.

5. A web winding changeover apparatus as defined in claim 4, wherein said guide roller is driven to rotate in accordance with a transporting speed of said web.

6. A web winding changeover apparatus as defined in claim 4, wherein said guide roller is supported by a rotatable guide roller support arm, and said guide roller support arm is coaxial with said receiving drum.

7. 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.

8. A web winding changeover method as defined in claim 7, wherein said guide roller is present in said cutout portion of said receiving drum at the time of being in said approaching position.