Abstract: A cutter mounting bar (18) is attached between both left and right side walls of an outer shield (16) in an armature winding apparatus to be swingably rotatable, and it is biased in a direction in which a movable blade (21) provided integrally with a tip end portion is away from an axis X by a compression spring (19). When an inner shield (15) is rotated, a cam surface presses an adjustment screw (23) outward to swing a cutter mounting bar (18) in a direction in which the movable blade (21) approaches the axis X. In this state, when an armature (1) is rotated and a wire (7) connecting a hook wire connection portion and a gripper (30) is inserted between the movable blade (21) and a backing blade (22) to advance the outer shield (16) rightward, the backing blade (22) abuts against a groove bottom surface of the inner shield (15) and stops, and only the movable blade (21) advances rightward and severs the wire (7) at a position close to the hook wire connection portion.

Abstract: A flyer shaft (12) having a first axis (A), and a wire guide holding member (24) having a second axis (B) eccentric therefrom by a distance (D) are synchronized to rotate in a same direction at a same speed, while an eccentric flange (26) supported around the fist axis (A) and the second axis (B), and a wire guide (30) integrated therewith are kept stationary, and after a wire (5) is inserted through a center hole (18a) of a push rod (18), which is formed in a center portion of the flyer shaft (12), and then passed through middle rollers (19, 20) and a top roller (21), it is guided by the wire guide (30) to be wound around an iron core (4) of an armature (1).

Abstract: A cutter mounting bar (18) is attached between both left and right side walls of an outer shield (16) in an armature winding apparatus to be swingably rotatable, and it is biased in a direction in which a movable blade (21) provided integrally with a tip end portion is away from an axis X by a compression spring (19). When an inner shield (15) is rotated, a cam surface presses an adjustment screw (23) outward to swing a cutter mounting bar (18) in a direction in which the movable blade (21) approaches the axis X. In this state, when an armature (1) is rotated and a wire (7) connecting a hook wire connection portion and a gripper (30) is inserted between the movable blade (21) and a backing blade (22) to advance the outer shield (16) rightward, the backing blade (22) abuts against a groove bottom surface of the inner shield (15) and stops, and only the movable blade (21) advances rightward and severs the wire (7) at a position close to the hook wire connection portion.

Abstract: A flyer shaft (12) having a first axis (A), and a wire guide holding member (24) having a second axis (B) eccentric therefrom by a distance (D) are synchronized to rotate in a same direction at a same speed, while an eccentric flange (26) supported around the fist axis (A) and the second axis (B), and a wire guide (30) integrated therewith are kept stationary, and after a wire (5) is inserted through a center hole (18a) of a push rod (18), which is formed in a center portion of the flyer shaft (12), and then passed through middle rollers (19, 20) and a top roller (21), it is guided by the wire guide (30) to be wound around an iron core (4) of an armature (1).

Abstract: A wire twist-preventing device in a winding machine of the invention comprises a flyer for forming a coil by winding a plurality of wires, which are arranged parallel with one another in a tape shape, around a winding frame having a plurality of winding stages which gradually increase upward in winding diameter, when the winding frame is lowered stage by stage, a dummy flyer which is rotated together with the flyer; and a dummy drum rotatably provided coaxially with the winding frame and having a circumferential length which is substantially equal to an average circumferential length of the winding frame, wherein the wires are wound around the winding frame by the flyer while they are wound around the dummy drum by the dummy flyer.

Abstract: A coil winding machine has a pair of gripping means respectively disposed above and under an armature held by a collet for gripping lead of wire at the beginning and end of a winding operation. Each gripping means has a gripping assembly whose gripping portion is inclined by two times as large as an inclination angle of its base portion supported by a gripping frame which is rotated reversely.

Abstract: In an apparatus for winding coils for a stator of an electric motor, a guide plate with a plurality of guide steps is disposed movably along a coil former member and is lowered more quickly than the coil former member so that one of the guide steps is located at the border between two adjacent steps of the coil former member. The leading wire can be smoothly led by each guide step without decreasing a winding speed when a winding operation is transferred from a step of the coil former member to an upper step thereof.