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US 4,410,122 AGranted
Device for widthwise control of web material and method
AssigneeBeloit Corporation
InventorsKenneth G. Frye, Donald Gangemi
Life of this patent
Estimating the term…
Abstract
A device for widthwise control of web material, comprises bar structure having resiliently bendable beam means for effecting a primary bowed adjustment. A set of side-by-side independent but cooperative wrap area members are carried by the beam means and are adapted to be individually selectively adjustable relative to the beam means to effect secondary adjustments incrementally at any of the members, without altering the primary bow relation, for correctionally compensating for uneven tension in any part of the web material, such as may be caused by web thickness, bulk or length.
Claims33
A device for widthwise control of web material and adapted to be operatively disposed between a web material source and other processing equipment, and comprising:
- a bar structure having elongate resiliently bendable mounting beam means, and limited wrap area means carried by said beam means and adapted to have web material run thereon;
- means for effecting resilient primary bow bending adjustment of said beam means in respect to the web material so that said wrap area means will have a widthwise controlling effect on the running web material;
- said wrap area means comprising a set of side-by-side independent but cooperatively related wrap area members which are adjustable relative to one another and relative to said beam means;
- means adjustably mounting said members on said beam means and adapted for individually selectively adjusting any of said members relative to said beam means to effect secondary bow adjustments of said wrap area means incrementally at any of said members, without altering said primary bow relation, for compensating for uneven tension in any part of the web material, such as may be caused by variations in web thickness, bulk or length;
- and
- said beam means comprising a plurality of resiliently bendable beam members of substantially rectangular cross-section across their axes, means fixedly connecting one of adjacent ends of said beam members in spaced relation, means relatively longitudinally adjustably connecting the opposite ends of said beam members in spaced relation, said means for effecting primary bow of said beam means comprising means carried by one of said beam members at its said opposite end and operating on said opposite end of the other of said beam members for causing the beam members to bow into a selected primary bowed relation with respect to the web material, said wrap area members comprising rollers, mounting brackets for the rollers mounted on said beam members, and means for effecting adjustments of said brackets transversely relative to said beam members.
3 more elements
A method of operating a web material controlling device which is adapted to be operatively disposed between a web material source and other processing equipment, comprising:
- running web material across a bar structure having elongate resiliently bendable mounting beam means and limited wrap area means carried by said beam means and comprising a set of side-by-side individually adjustable independent but cooperatively related wrap area members;
- manipulating an adjustment screw and thereby resiliently bending said beam means and thereby effecting a primary bow relation of said spreader bar structure in respect to the web material running on said members and effecting widthwise control of the material;
- and individually selectively adjusting any of said wrap area members relative to said beam means and thereby effecting secondary adjustments of said wrap area means incrementally at any of said members, without altering said primary bow relation, and thus compensating for uneven tension in any part of the web material, such as may be caused by variations in web thickness, bulk or length.
A method of operating a web material controlling device which is adapted to be operatively disposed between a web material source and other processing equipment, comprising:
- running web material across a bar structure having elongate resiliently bendable mounting beam means and limited wrap area means carried by said beam means and comprising a set of side-by-side individually adjustable independent but cooperatively related wrap area members;
- resiliently bending said beam means and thereby effecting a primary bow relation of said spreader bar structure in respect to the web material running on said members and effecting widthwise control of the material;
- individually selectively adjusting any of said wrap area members relative to said beam means and thereby effecting secondary adjustments of said wrap area means incrementally at any of said members, without altering said primary bow relation, and thus compensating for uneven tension in any part of the web material, such as may be caused by variations in web thickness, bulk or length;
- said beam means comprising a plurality of resiliently bendable beam members of substantially rectangular cross-section across their axes, said beam members being fixedly connected at one of their ends which are adjacent to one another in spaced relation, and relatively longitudinally adjustably connected at their opposite ends in spaced relation;
- effecting primary bow relation of said beam members by manipulating bow adjustment means carried by one of said beam members at its opposite end and acting on said opposite end of the other of said beam members and thereby causing the beam members to bow into a selected primary bow relation with respect to said web strips;
- and
- effecting secondary bow adjustments of said wrap area members by adjusting transversely relative to said beam means respective member-mounting brackets carried by said beam means.
4 more elements
A device for widthwise control of web material and adapted to be operatively disposed between a web material source and other processing equipment, and comprising:
- a bar structure having elongate resiliently bendable mounting beam means, and limited wrap area means carried by said beam means and adapted to have web material run thereon;
- means for effecting resilient primary bow bending adjustment of said beam means in respect to the web material so that said wrap area means will have a widthwise controlling effect on the running web material;
- said wrap area means comprising a set of side-by-side independent but cooperatively related wrap area members which are adjustable relative to one another and relative to said beam means;
- and means adjustably mounting said members on said beam means and adapted for individually selectively adjusting any of said members relative to said beam means to effect secondary bow adjustments of said wrap area means incrementally at any of said members, without altering said primary bow relation, for compensating for uneven tension in any part of the web material, such as may be caused by variations in web thickness, bulk or length;
- said beam means comprising a pair of cooperating beam members which have their opposite ends adjacent to one another, the beam members being anchored fixedly relative to one another to one of their ends and being connected for relative longitudinal movement at the other of their ends, and said means for effecting primary bow bending acting to adjust the beam members relatively longitudinally at said other ends for placing the beam members under longitudinal bending stress and causing bending of both of the beam members in the same direction.
2 more elements
A device for widthwise control of web material and adapted to be operatively disposed between a web material source and other processing equipment, and comprising:
- a bar structure having elongate resiliently bendable mounting beam means, and limited wrap area means carried by said beam means and adapted to have web material run thereon;
- means for effecting resilient primary bow bending adjustment of said beam means in respect to the web material so that said wrap area means will have a widthwise controlling effect on the running web material;
- said wrap area means comprising a set of side-by-side independent but cooperatively related wrap area members which are adjustable relative to one another and relative to said beam means;
- means adjustably mounting said members on said beam means and adapted for individually selectively adjusting any of said members relative to said beam means to effect secondary bow adjustments of said wrap area means incrementally at any of said members, without altering said primary bow relation, for compensating for uneven tension in any part of the web material, such as may be caused by variations in web thickness, bulk or length;
- said wrap area members comprising web driven rollers;
- and
- said means for adjustably mounting said members comprising respective brackets mounting said rollers, said brackets being carried by said beam means, and means for effecting adjustment of said brackets selectively relative to said beam means and relative to each other.
4 more elements
A device for widthwise control of web material and adapted to be operatively disposed between a web material source and other processing equipment, and comprising:
- a bar structure having elongate resiliently bendable mounting beam means, and limited wrap area means carried by said beam means and adapted to have web material run thereon;
- means for effecting resilient primary bow bending adjustment of said beam means in respect to the web material so that said wrap area means will have a widthwise controlling effect on the running web material;
- said wrap area means comprising a set of side-by-side independent but cooperatively related wrap area members which are adjustable relative to one another and relative to said beam means;
- means adjustably mounting said members on said beam means and adapted for individually selectively adjusting any of said members relative to said beam means to effect secondary bow adjustments of said wrap area means incrementally at any of said members, without altering said primary bow relation, for compensating for uneven tension in any part of the web material, such as may be caused by variations in web thickness, bulk or length;
- and
- a second bar structure having means for effecting a primary bow relation, and wrap area means;
- frame means mounting both of said bar structures in spaced apart relation, and supporting means for said frame means comprising an arrangement for effecting rotary adjustment of said frame means about an axis extending longitudinally in substantially parallel relation between said bar structures.
4 more elements
A device for widthwise control of web material and adapted to be operatively disposed between a web material source and other processing equipment, and comprising:
- a bar structure having elongate resiliently bendable mounting beam means, and limited wrap area means carried by said beam means and adapted to have web material run thereon;
- means for effecting resilient primary bow bending adjustment of said beam means in respect to the web material so that said wrap area means will have a widthwise controlling effect on the running web material;
- said wrap area means comprising a set of side-by-side independent but cooperatively related wrap area members which are adjustable relative to one another and relative to said beam means;
- and means adjustably mounting said members on said beam means and adapted for individually selectively adjusting any of said members relative to said beam means to effect secondary bow adjustments of said wrap area means incrementally at any of said members, without altering said primary bow relation, for compensating for uneven tension in any part of the web material, such as may be caused by variations in web thickness, bulk or length;
- said adjustable mounting of said members on said beam means being such that the incremental adjustments of the members is in direction parallel to the plane of the primary bow effected by bending adjustment of the beam means.
2 more elements
A method of operating a web material controlling device which is adapted to be operatively disposed between a web material source and other processing equipment, comprising:
- running web material across a bar structure having elongate resiliently bendable mounting beam means and limited wrap area means carried by said beam means and comprising a set of side-by-side individually adjustable independent but cooperatively related wrap area members comprising web driven rollers;
- running said web material in partial wrap relation on said rollers;
- resiliently bending said beam means and thereby effecting a primary bow relation of said spreader bar structure in respect to the web material running on said members and effecting widthwise control of the material;
- individually selectively adjusting any of said wrap area members relative to said beam means and thereby effecting secondary adjustments of said wrap area means incrementally at any of said members, without altering said primary bow relation, and thus compensating for uneven tension in any part of the web material, such as may be caused by variations in web thickness, bulk or length;
- supporting said rollers on brackets;
- supporting said brackets on said beam means;
- and effecting adjustment of said brackets selectively relative to said beam means and relative to each other.
4 more elements
A method of operating a web material controlling device which is adapted to be operatively disposed between a web material source and other processing equipment, comprising:
- running web material across a bar structure having elongate resiliently bendable mounting beam means and limited wrap area means carried by said beam means and comprising a set of side-by-side individually adjustable independent but cooperatively related wrap area members;
- resiliently bending said beam means and thereby effecting a primary bow relation of said spreader bar structure in respect to the web material running on said members and effecting widthwise control of the material;
- individually selectively adjusting any of said wrap area members relative to said beam means and thereby effecting secondary adjustments of said wrap area means incrementally at any of said members, without altering said primary bow relation, and thus compensating for uneven tension in any part of the web material, such as may be caused by variations in web thickness, bulk or length;
- effecting said incremental adjustments of said members in direction parallel to the plane of the primary bow effected by bending adjustment of the beam means;
- and
- effecting said incremental adjustments of the members along flat guide surface means oriented in a direction parallel to the plane of said primary bow.
3 more elements
A method of operating a web material controlling device which is adapted to be operatively disposed between a web material source and other processing equipment, comprising:
- running web material across a bar structure having elongate resiliently bendable mounting beam means and limited wrap area means carried by said beam means and comprising a set of side-by-side individually adjustable independent but cooperatively related wrap area members;
- resiliently bending said beam means and thereby effecting a primary bow relation of said spreader bar structure in respect to the web material running on said members and effecting widthwise control of the material;
- and individually selectively adjusting any of said wrap area members relative to said beam means and thereby effecting secondary adjustments of said wrap area means incrementally at any of said members, without altering said primary bow relation, and thus compensating for uneven tension in any part of the web material, such as may be caused by variations in web thickness, bulk or length;
- said beam means comprising a pair of cooperating beam members which have their opposite ends adjacent to one another, the beam members being anchored fixedly relative to one another at one of their ends and being connected for relative longitudinal movement at the other of their ends, and adjusting said beam members relatively longitudinally at said other ends and thereby placing the beam members under longitudinal stress and causing bending of both of the beam members in the same direction and effecting said primary bow relation.
1 more element
Dependencies are inferred from the claim text.