Apparatus for web cut-off in a rewinder
AssigneeKimberly-Clark Worldwide, Inc.
InventorsMatthew R. Wilson, Steven J. Wojcik, Christopher L. Satori, Christopher R. Fahrbach
Life of this patent
Estimating the term…
Abstract
A web cut-off assembly for a rewinder apparatus includes a bedroll having a pair of retractable bedroll blades that move to a protracted position to engage the web material for a web cutting event. A chopper roll is disposed proximate to the bedroll and includes a first blade and a second blade extending from a circumference thereof. The first and second blades rotationally intermeshing with the bedroll blades in the web cutting event. The second blade is configured to effectively stretch and hold the web relative to the bedroll blades as the first blade severs the web in the web cutting process.
Claims23
A web cut-off assembly for a rewinder apparatus, comprising:
- a bedroll disposed such that web material from a parent roll passes around a circumferential portion of said bedroll;
- a pair of bedroll blades retractably mounted on said bedroll, said bedroll blades moveable from a retracted position to a protracted position radially beyond said bedroll to engage the web material for a web cutting event;
- a chopper roll disposed proximate to said bedroll, said chopper roll comprising a first blade and a second blade extending from a circumference thereof, said first and second blades rotationally intermeshing with said bedroll blades in said web cutting event;
- said first blade extending tangentially and radially from said chopper roll;
- and
- said second blade having a blade tip segment extending tangentially and radially from said chopper roll and resiliently mounted to said chopper roll.
A web cut-off assembly for a rewinder apparatus, comprising:
- a bedroll disposed such that web material from a parent roll passes around a circumferential portion of said bedroll;
- a pair of bedroll blades moveably mounted on said bedroll, said bedroll blades moveable from a recessed position radially within said bedroll to a protracted position radially beyond said bedroll to engage the web material for a web cutting event;
- a chopper roll disposed proximate to said bedroll, said chopper roll comprising a first blade and a second blade extending from a circumference thereof, said first and second blades spaced so as to rotationally intermesh with said bedroll blades in said web cutting event;
- said first blade being a cutting blade and non-movably fixed to said chopper roll;
- and
- said second blade resiliently mounted to said chopper roll.
A web cut-off assembly for a rewinder apparatus, comprising:
- a bedroll disposed such that web material from a parent roll passes around a circumferential portion of said bedroll;
- a pair of bedroll blades moveably mounted on said bedroll, said bedroll blades moveable from a recessed position radially within said bedroll to a protracted position radially beyond said bedroll to engage the web material for a web cutting event;
- a chopper roll disposed proximate to said bedroll, said chopper roll comprising a first blade and a second blade extending from a circumference thereof, said first and second blades rotationally intermeshing with said bedroll blades in said web cutting event;
- said first blade extending tangentially and radially from said chopper roll;
- and
- said second blade having a blade tip segment extending tangentially and radially from said chopper roll in a non-parallel relationship with said first blade and having a length so as to engage and stretch the web material across said bedroll blades prior to said first blade entering between said bedroll blades to sever the web material.
A web cut-off assembly for a rewinder apparatus, comprising:
- a bedroll disposed such that web material from a parent roll passes around a circumferential portion of said bedroll;
- a pair of bedroll blades moveably mounted on said bedroll, said bedroll blades moveable from a recessed position radially within said bedroll to a protracted position radially beyond said bedroll to engage the web material for a web cutting event;
- a chopper roll disposed proximate to said bedroll, said chopper roll comprising a first blade and a second blade extending from a circumference thereof, said first and second blades rotationally intermeshing with said bedroll blades in said web cutting event;
- said first blade extending at an angle greater than normal with respect to said chopper roll;
- and
- said second blade having a blade tip segment extending at an angle greater than normal with respect to said chopper roll but not parallel with said first blade, said second blade also having a middle segment angled from said blade tip segment and providing said second blade with a degree of resiliency, and said second blade further comprising a base segment mounted to said chopper roll against said first blade.
Dependencies are inferred from the claim text.