Patent ID: 7143792

Claim:
A reinforcing bar binder comprising: a binding line feed mechanism that feeds out a binding line in a loop-like shape to be wound around a reinforcing bar; a grasp mechanism having a slidable shaft, the grasp mechanism including a plurality of clamp plates that open and close onto the binding line wound around the reinforcing bar; a binding line twist mechanism that binds the reinforcing bar by twisting the binding line by driving to rotate the grasp mechanism; a slide drive mechanism for elongating and contracting the grasp mechanism; a control portion that applies a tension to the binding line wound around the reinforcing bar by controlling the slide drive mechanism in a twisting step; a feed motor that drives the binding line feed mechanism; a slide motor that drives the slide drive mechanism; a twist motor that drives the grasp mechanism and the binding line twist mechanism; and a rotation stopping fin that is slidable between a first position and a second position, wherein the grasp mechanism is unrotatable when the rotation stopping fin is in the first position and the grasp mechanism is rotatable when the rotation stopping fin is in the second position.