Method of preventing wire from becoming entangled in reinforcing

Details Method of preventing wire from becoming entangled in reinforcing Method of preventing wire from becoming entangled in reinforcing

1997-08-04

1999-02-23

Sircus, Brian

Electricity: motive power systems

Motor load, armature current or force control during...

318453, 318474, 318484, 140 936, 140 57, B21F 902

Patent

active

058748164

ABSTRACT:
A method of preventing a wire from becoming entangled in a reinforcing bar fastening machine having a wire feed device for feeding a wire for fastening reinforcing bars, a guide arm for guiding the wire so as to wind around a crossing point of the reinforcing bars in the form of a loop, a twisting device for performing a tying operation by twisting while picking up part of the loop of the wire wound around the crossing point of the reinforcing bars, and a cutting device for cutting the loop from the wire on a reinforcing bar fastening machine side, the method comprises the steps of: monitoring a torque of a motor for driving the twisting device; and stopping the operation of the twisting device when no increasing tendency is observed in changes in the torque after a predetermined time has elapsed from an operation start timing of the twisting device.

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