Wire winding device and wire winding method

A wire winding method of winding a wire rod delivered from a nozzle around a winding core by rotating either one of the nozzle or the winding core serving as a rotated member, the wire winding method comprising:

• during a winding process in which the wire rod is being wound around a winding body portion of the winding core towards a flange portion of the winding core, extracting an edge of the wire rod wound around the winding body portion and an end surface of the flange portion from an image acquired by an image acquisition device, the image including both the flange portion and the wire rod, and measuring a distance between the edge of the wire rod and the end surface as a space length between the wire rod and the flange portion;
• computing a required rotation angle of the rotated member based on the space length;
• and
• rotating the rotated member by the required rotation angle.

A wire winding device for winding a wire rod delivered from a nozzle around a winding core, the wire winding device comprising:

• the nozzle, configured to deliver the wire rod from a tip end portion thereof;
• a spindle configured to hold the winding core at a tip end portion thereof, the winding core having a winding body portion and a flange portion, the winding body portion being configured such that the wire rod delivered from the nozzle is wound around the winding body portion, and the flange portion is provided on one end side of the winding body portion;
• an image acquisition device having a camera and a mirror disposed between the camera and an object, the camera being capable of acquiring an image of the object during a winding process in which the wire rod is being wound around the winding body portion towards the flange portion, the object including both the flange portion and the wire rod;
• and
• a control circuit configured to control rotation of either one of the nozzle or the winding core serving as a rotated member, wherein
• the camera and the mirror are arranged such that a viewing direction of the image acquisition device, which is a direction from a center of the camera toward a center of the mirror, is set to be parallel to a direction of a rotation axis of the winding core held by the spindle, and
• the mirror is arranged such that the mirror redirects a light in the viewing direction from a lens of the camera to a center of the object of the image.