Patent ID: 7190466

Claim:
A tape reel inspection device for inspecting a position of each flange on inner diameter side or outer diameter side of flanges, distance between flanges, and an inclined angle of inner surface of each flange in a tape reel having a pair of disk-shaped flanges fixed to both ends of a cylindrical hub, comprising: a rotator that rotates the tape reel in a circumferential direction of the flanges centering on the hub; a first light projector that irradiates a first parallel light that passes a first measuring point set up on the inner diameter side of the inner surface of one of the flanges, and a second parallel light that passes a second measuring point set up on the inner diameter side of the inner surface of the other flange, so that the first measuring point and the second measuring point are in the same position in an axial direction of the flanges; a first light receiver that receives the first parallel light that passes the first measuring point and the second parallel light that passes the second measuring point, and obtains the first measuring point and the second measuring point based on the receiving position of the first parallel light and the second parallel light; a second light projector that irradiates a third parallel light that passes a third measuring point set up on the outer diameter side of the inner surface of the flange, and a fourth parallel light that passes a fourth measuring point set up on the outer diameter side of the inner surface of the flange so that the third measuring point and the fourth measuring point are in the same position in the axial direction of the flanges; and a second light receiver that receives the third parallel light that passes the third measuring point and the fourth parallel light that passes the fourth measuring point and obtains the third measuring point and the fourth measuring point based on the receiving position of the third parallel light and the fourth parallel light.