| 摘要 |
<p>The method described provides for the footwear to be struck by light beams from two sides thereof, for a plurality of points on the edge of the shadow projected by the footwear to be detected on respective opposite sides, and for the profile of the footwear in the plane of the sole to be derived from the positions of the points detected and from the geometrical characteristics of the light beams. Equipment for obtaining the profile of footwear automatically during manufacture with the use of this method is described, and comprises means for causing the footwear to pass through a detection plane, and two photoelectric devices (16, 19) disposed in the detection plane and constituted by light emitters (16a, 16b, 19a, 19b) and light receivers (16c, 19c) which are switched on and scanned in succession. These devices define pairs of straight lines (t1, t2) which are tangential to the footwear and each of which passes through an emitter which is switched on and through a receiver. The intersections of the pairs of straight lines, in association with the position of the footwear along its line of advance, define the profile of the footwear. <IMAGE></p> |
