| 摘要 |
PURPOSE: A tension maintaining device for supplying an electric wire is provided to absorb tension of the wire, thereby primarily preventing disconnection of the wire. CONSTITUTION: A guide roller(11) is pivotally installed on a supporting plate(9). The guide roller guides a wire to a supply roller(6). If tension is applied to the wire, a tension maintaining unit(15) solves the tension by an elastic force. A rotation radius of the tension maintaining unit is sensed. In case the rotation radius is more than a certain range, a sensing unit(18) generates a signal. A controller stops driving of the supply roller. A first guide member guides the wire inserted into the guide roller. |
