Patent ID: 6993950
Filing Date: 2006-02-07
Classification: B21D

Abstract:
1. A device for cutting and bending rebar, comprising: a longitudinally-extended main frame; a shaft assembly connected to said main frame and movable along a first, longitudinal axis (A—A) between a first, retracted position and a second extended position and having a first end and an opposite, second end; a first, movable cutting head carried by the shaft assembly and movable therewith along axis (A—A); a second, fixed cutting head disposed such that the first cutting head is substantially adjacent to the second cutting head when the shaft assembly is in the extended position; a crankshaft assembly disposed for pivotal rotation about a first rebar bending axis (B—B) substantially perpendicular to the first longitudinal axis (A—A) in response to longitudinal movements of the shaft assembly; means attached to the shaft assembly for coupling the shaft assembly to the crankshaft assembly; a first, driven rebar bending wheel mounted on the crankshaft assembly for rotation about the first rebar bending axis (B—B); a second, idler rebar bending wheel longitudinally spaced-apart from the first wheel and rotatable about a second rebar bending axis (B′—B′) that is parallel to the first rebar bending axis (B—B), the space between the first and second wheels defining a gap that is wide enough for insertion of a piece of rebar that is to be bended but narrow enough that the peripheral edges of the first and second wheels will be in frictional engagement with the inserted rebar; a first bending block attached to, and rotatable with, the first wheel for bending into a first arc a piece of rebar inserted between the first and second wheels; and linear actuator means attached to the main frame and in driving engagement with the first end of the shaft assembly for reciprocal movement of said assembly along the first, longitudinal axis (A—A); whereby, in a first mode of operation, as the shaft assembly moves from the retracted position to the extended position, a piece of rebar inserted laterally between the first and second cutting heads will be sheared by the cutting heads, and, in a second mode of operation, as the shaft assembly moves from the retracted to the extended position, a piece of rebar inserted laterally between the first and second wheels will be moved laterally through the gap, engaged by said stop means, and bent in the direction of rotation of the first wheel to form a first arc.