Abstract: A motor armature core coil winding machine comprising a rotating spindle carrying a flier arm at its free end by way of a flier mounting block, a wire guide block rotatably and coaxially supported by the flier mounting block by way of a stub shaft fixedly secured to the wire guide block, an intermediate shaft rotatably supported by the flier arm mounting block in parallel with the spindle, a first endless belt passed around a first pulley fixedly secured to a fixed member coaxially with the spindle and a second pulley fixedly secured to an end of the intermediate shaft, and a second endless belt passed around a third pulley fixedly secured to the other end of the intermediate shaft and a fourth pulley fixedly and coaxially secured to a stub shaft of the wire guide block. Thus, even though the wire guide block is mounted on a free end portion of a spindle which rotates integrally with a flier, the wire block is kept stationary, and can maintain a spaced and fixed relationship with the armature core.

Abstract: A wire tensioner, for feeding wire from a wire source to a wire handling machine such as a coil winding machine, comprising a tension pulley coupled with an output shaft of a motor via a clutch such as an electromagnetic powder clutch with a variable torque transmission capability. Wire is passed around the tension pulley which is turned by the motor in the direction opposite to the feeding direction of the wire. By controlling the torque transmission ratio of the clutch, the tension of the wire is controlled with a fast response. This tensioner can be advantageously used for a motor coil winding machine to removing any slacking in the coil wire and improving the wire density of the motor coils.

Abstract: A monitoring system for a wire handling machine, comprising a measuring unit for measuring an amount of wire consumption by the wire handling machine, and a control unit including memory for storing an expected amount of wire consumption for each of steps carried out by the wire handling machine, and a CPU having the functions of comparing an actual amount of wire consumption as detected by the measuring unit with a corresponding value stored in the memory, and producing an output indicative of a fault in the wire handling machine when any deviation exceeding a certain limit is detected between the actual amount of wire consumption and the corresponding value stored in the memory. Thus, the operating condition of the wire handling machine such as a motor armature coil winding machine can be accurately evaluated by the amount of wire consumption which can be easily measured with a simple device for measurement, for instance by using a rotary encoder coupled with a pulley around which the wire is passed.