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US 8,783,081 B2Granted
Methods and apparatus to control a hem profile of strip material
AssigneeThe Bradbury Company, Inc.
InventorsVerne D. Voth, Gregory S. Smith
Life of this patent
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Abstract
Methods and apparatus for controlling a hem profile in roll-forming processes are described. An example roll-forming apparatus includes a first plurality of work rolls to form a first hem on a material and a second plurality of work rolls. One of the second plurality of work rolls is adjustable relative to an opposing work roll and to the first plurality of work rolls to adjustably control a profile of the first hem.
Claims22
A roll-forming apparatus, comprising:
- a base to which a first plurality of work rolls are rotatably coupled, wherein the first plurality of work rolls is to form a first hem on a material;
- a second plurality of work rolls comprising parallel axes of rotation, the second plurality of work rolls to control a profile of the first hem, wherein one of the second plurality of work rolls is rotatably coupled to a pivot block that is hingeably coupled to the base;
- and
- a manually operable adjuster that extends through the pivot block, the adjuster comprises a first end and a second end, the first end extends from the pivot block to enable manual adjustment, the second end threadingly engages the base, wherein the adjuster is rotatable to move the pivot block relative to the base and to move the one of the second plurality of work rolls relative to an opposing work roll to enable the profile of the first hem to be continuously adjusted.
1 more element
A roll-forming apparatus, comprising:
- a base;
- and
- a plurality of work rolls rotatably journalled to the base to be in engagement with a material, wherein a first work roll of the plurality of work rolls comprises:
- planar surfaces to contact the material;
- and
- a recess between the planar surfaces, the recess having a first surface, a second surface, and a third surface, the second surface positioned between the first and third surfaces, the second surface being inclined relative to a rolling axis of the first work roll to change a hem profile on the material to a first hem profile or a second hem profile different than the first hem profile based on a distance between the first work roll and an opposing work roll.
3 more elements
Dependencies are inferred from the claim text.