US 4,987,752 A · Hide skiving machine

Abstract

A hide skiving machine adapted to skive a hide in one pass constituted by a frame which supports, at its sides, a rotatable support cylinder upon which the hide is fed and is held in place by a slidable presser roller. A lower oscillating frame having a rotating lower blade cylinder and an upper oscillating frame having a rotating upper blade cylinder are furthermore provided which skive the hide. The oscillating frames are independently movable between a raised non-working position and a lowered working position by respective actuators. Each blade cylinder is provided with a sharpening assembly which maintains the blade sharpness for more effective skiving. An adjustable, flexible front shield and a feed table are furthermore provided. The oscillating frames which support the blade cylinders are also provided with play recovery elements which help maintain the position of the blade cylinders with respect to the hide. The support cylinder can also be provided with supporting elements which allow for the inclination of the axis of the support cylinder relative to the axes of the blade cylinders, thereby providing more effective sharing of hides with variable thicknesses.

Claims21

Dependent claims

Hide skiving machine adapted to skive a hide in a single pass comprising:

a supporting frame with sides, a rotatable support cylinder supported by said sides of said supporting frame, an upper oscillating frame having a first blade cylinder and a lower oscillating frame having a second blade cylinder, said oscillating frames being independently movable between at least one raised position, in which said blade cylinders are spaced away from said support cylinder, and a lowered-work position, in which said blade cylinders are at a short distance from said support cylinder and are in skiving contact with said hide arranged on said support cylinder, actuator means to position said oscillating frames and thereby related said blade cylinders in said lowered-work position and in said at least one raised position, wherein said actuator means comprise a positioning element adapted to lift and lower related said oscillating frame, and an adjusting element connected in series to said actuator means and adapted to provide a precision adjustment of said work position of related said blade cylinder.

Hide skiving machine adapted to skive a hide in a single pass comprising:

a supporting frame with sides, a rotatable support cylinder supported by said sides of said supporting frame, an upper oscillating frame having a first blade cylinder and a lower oscillating frame having a second blade cylinder, said oscillating frames being independently movable between at least one raised position, in which said blade cylinders are spaced away from said support cylinder, and a lowered-work position, in which said blade cylinders are at a short distance from said support cylinder and are in skiving contact with said hide arranged on said support cylinder, actuator means to position said oscillating frames and thereby related said blade cylinders in said lowered-work position and in said at least one raised position, wherein a shearing cycle of said machine is comprised of a beginning stage, a middle stage and a final stage, and during said beginning stage of said shearing cycle, said second blade cylinder is in said lowered-work position and said first blade cylinder is in said at least one raised position, and during said middle stage of said shearing cycle, said second blade cylinder is in said lowered-work position and said first blade cylinder is also in said lowered-work position, and during said final stage of said shearing cycle, said second blade cylinder is in said at least one raised position and said first blade cylinder is in said lowered-work position.

Dependencies are inferred from the claim text.

Hide skiving machine

Life of this patent

Hide skiving machine

Life of this patent

Abstract

Claims21