Trim removal system
AssigneeCurt G. Joa, Inc.
InventorJohn A. McCabe
Life of this patent
Estimating the term…
Abstract
A system for removing chips from a web is disclosed, the system having a rotationally variable speed shoe for receiving a chip, a rotationally constant speed transfer roll for receiving a portion of a web from a die and anvil system, with the shoe initially rotating at a constant speed, slowing to allow a portion of the web to rip away from the chip at a leading rotational edge of the chip, next increasing in rotational speed to allow the chip to rip away from the web at a trailing rotational edge of the chip.
Claims13
A system for removing chips from a web, the system comprising:
- a shoe for receiving a chip, said shoe rotating about an axis driven by a first shaft at a variable speed of revolution, said shoe rotating at a fixed distance from said axis throughout revolution;
- a transfer roll for receiving a portion of a web, said transfer roll rotating about the said axis driven by a second shaft concentric with said first shaft at a constant speed of revolution, said transfer roll rotating at a fixed distance from said axis throughout revolution at said fixed distance from said axis;
- said shoe initially rotating at said constant speed of revolution, next slowing in speed of revolution to allow said portion of said web to rip away from said chip at a leading rotational edge of said chip, next increasing in speed of revolution to allow said chip to rip away from said web at a trailing rotational edge of said chip.
A system for removing chips from a web, the system comprising:
- a shoe rotating about an axis at a variable speed of revolution for receiving a chip portion of a web;
- a transfer roll rotating about the axis at a constant speed of revolution for receiving a non-chip portion of said web;
- said shoe rotating about an axis at a variable speed of revolution coaxial with said transfer roll rotating about the axis at a constant speed of revolution said shoe being driven rotationally by a first shaft and said transfer roll being driven rotationally by a second shaft that is concentric with the first shaft;
- said transfer roll rotating about the axis at a constant speed of revolution having a void space for receiving said rotationally variable speed shoe and configured to allow said shoe rotating about an axis at a variable speed of revolution to rotate relative to said transfer roll rotating about the axis at a constant speed of revolution;
- said shoe initially rotating at said constant speed of revolution, next slowing in speed of revolution to allow said chip portion of said web to rip away from said non-chip portion of said web at a leading rotational edge of said chip, next increasing in speed of revolution to allow said chip portion of said web to rip away from said non-chip portion of said at a trailing rotational edge of said chip;
- said shoe rotating about an axis at a variable speed of revolution having a peripheral surface of non-uniform radius.
Dependencies are inferred from the claim text.