| 摘要 |
Selection and control device to count bars (12) being fed separated orthogonally to their axis on a plane and cooperating with translation means (11), the device including two optical monitoring means (19,20) and a processing unit (22), the optical monitoring means (19,20) being arranged at an angle with their apex substantially on the plane on which the bars (12) are fed and whose respective monitoring axis cooperates with a portion of the plane on which the bar (12) being fed passes, the respective monitoring axes having an angle of incidence with respect to the plane on which the bars (12) are fed in the proximity of a common point cooperating substantially with the positioning seating (17) of the bars (12) on the translation means (11), each of the monitoring means (19,20) lying on a plane substantially orthogonal to the plane on which the bars (12) are fed, and to the axis of the bars (12), and including respective angles (" alpha "," beta ") with respect to a line vertical (23) to the plane of feed, the angles (" alpha "," beta ") defining an angle (" gamma ") at the apex, the apex lying substantially on a line vertical (23) to the plane of feed of the bars (12), the processing unit (22) being suitable to receive the signal concerning the field explored by each of the optical monitoring means (19,20), to transform the said signal into a dimensional value, to compare the dimensional value with the pre-set nominal diameter of the bars (12) and to supply, according to this comparison, an indication as to the number of bars (12) present in the seating (17) of the translation means (11). <IMAGE> |
