Reinforcing steel bar tying machine

Abstract

A final gear (23) and a ball screw shaft (24) of a rotation drive system of a binding line twist mechanism are connected by a spline and a shaft portion of a center clamp plate (26) of a binding line clamp apparatus (25) is connected to a front end of the ball screw shaft (24). A shift mechanism for moving the ball screw shaft (24) and the binding line clamp apparatus (25) in a front and rear direction by a slide motor (22) is provided. A wire (W) is wound around a reinforcing bar (S) by a binding line feed mechanism, the wire is grasped by a front end portion of the binding line clamp apparatus (25) and thereafter, a shift mechanism applies a tension to a loop of the wire by moving rearward the binding line clamp apparatus (25). The binding line clamp apparatus (25) is rotated by a twist motor (21) and the shift mechanism twists up the wire by moving forward the binding line clamp apparatus (25). Since the wire is applied with the tension and twisted, a reinforcing bar binding strength of the wire loop is stabilized.

Description

technical field [0001] The present invention relates to a steel bar binding device, and in particular to a steel bar binding device realizing improved binding strength and a steel bar binding device realizing improved binding completion state. In addition, the present invention also relates to a binding wire sending mechanism of a steel bar binding device, in particular to a binding wire sending mechanism of a steel bar binding device which realizes improving the stability of sending out the binding wire. Background technique [0002] The steel bar binding device has: a binding wire delivery mechanism that sends out a binding wire such as a steel wire wound on a reel and winds it around a steel bar; a holding mechanism that holds the binding wire wound around a steel bar; and a rotating Drive the holding mechanism to twist the binding wire twisting mechanism of the binding wire; through the starting operation, the binding wire sending mechanism, the holding mechanism, and th...

AI Technical Summary

Problems solved by technology

[0008] In the binding wire delivery mechanism of a conventional steel bar binder in which a driven gear with a V-shaped groove elastically contacts a drive gear with a V-shaped groove by a spring, the binding wire that is wound on the winding shaft of the binding wire When the straightness is poor and the left and right vibration relative to the forward direction is large, the driven gear with V-shaped groove is pushed to the horizontal direction by the binding wire, and the meshing with the driving gear with V-shaped groove is disengaged, and the binding wire is sent out. bad situation

When the binding wire of the specified length cannot be sent out, it will cause a binding failure in the twisting process, and the binding operation must be performed again, resulting in waste of the binding wire

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