Reinforcing bar binding machine

摘要

A reinforcing bar binding machine is provided with a device for detecting a power supply voltage during a binding wire twisting step subjected to the heaviest load and comparing the power supply voltage with a predetermined CPU operation voltage, and a control device for driving a motor in a reverse direction when the voltage has dropped below the predetermined CPU operation voltage. The power supply voltage during operation is monitored, and twisting operation is suspended before the voltage drops below the CPU operation voltage, whereby the binding wire twisting mechanism is returned to the initial position. Therefore, it is possible to prevent the binding wire twisting mechanism from being stopped while grasping the binding wire, when the CPU stops.

主权项

1. A reinforcing bar binding machine comprising:
a binding wire feeding mechanism that feeds a binding wire which is wound around a reel to a binding wire guiding nose and forms a binding wire loop around a reinforcing bar; a binding wire twisting mechanism that twists the binding wire loop formed around the reinforcing bar, by grasping and rotating the binding wire loop; a power supply voltage detecting device; a device for comparing a detected voltage of the power supply with a predetermined minimum operation voltage required to operate the reinforcing bar binding machine; and a control device that drives a motor in a reverse direction, when the detected voltage of the power supply has dropped below the predetermined operation voltage, thereby to return the binding wire twisting mechanism to an initial position, wherein the detection of the power supply voltage for controlling the return of the binding wire twisting mechanism to the initial position is carried out only during a reinforcing bar binding step.