Automatic trimming apparatus for wire coils

An automatic trimming apparatus for wire coils including a plurality of wire loops, wherein the apparatus comprises:

• a base frame,
• a rotational member rotatably connected to the base frame, and having a space for receiving a wire loop of the plurality of wire loops of the coil,
• a first actuator arranged to rotate the rotational member in two opposite directions, and
• a control unit arranged to control the first actuator, wherein
• the rotational member is provided with
• a support unit arranged in said space for supporting the wire loop when the rotational member is rotated,
• a sensor assembly arranged for sensing the presence of a wire in a defined area of the space,
• a distance sensor for sensing a distance travelled along the wire when the rotational member is rotated, and
• a cutting device, and
• the control unit is adapted to
• receive outputs from the sensor assembly and the distance sensor,
• detect an end of the wire based on the output from the sensor assembly,
• control the first actuator so that the rotational member is rotated in a first direction until the end of the wire is detected,
• control the first actuator so that the rotational member is rotated in a second direction opposite the first direction when the end of the wire has been detected,
• determine the distance travelled along the wire in the second direction based on the output from the distance sensor, and
• generate a cutting command based on the distance travelled along the wire from the end of the wire and a predetermined cutting distance, and the cutting device is arranged to cut the wire upon receiving the cutting command from the control unit.