Trimming strip material
AssigneeThe Head Wrightson Machine Co. Ltd.
InventorKenneth T. Lawson
Life of this patent
Estimating the term…
Abstract
Edge trimming apparatus and method for trimming off wavy edges of strip material, e.g. metal strip, wherein rotary trimming knives for each edge of the strip are movable transversely relative to the advancing strip. The knives are pivotally supported about vertical axis and can have their transverse spacing adjusted, the support blocks preferably being transversely slidable in guides which are mounted on a carriage which itself is transversely movable relative to the advancing strip. Edge sensors are located adjacent edge regions of the strip and signals from the sensors are passed to a device, for example a hydraulic jack, for moving the carriage transversely.
Claims16
Apparatus for trimming the edges of strip material including at least one knife mounted for rotation about a generally horizontal axis, pivot means displaced from said knife and pivotally supporting said knife about a generally vertical axis, means to determine the deviation of said strip in a transverse direction from its normal line of advance, and means to move said pivot means transversely of the strip to compensate for deviation of said strip, the displacement of said pivot means from the knife being in such direction that when said pivot means is moved transversely, the knife will steer itself across the strip to a new position during relative movement between the strip and the knife.
Dependencies are inferred from the claim text.