| 摘要 |
PCT No. PCT/SE86/00217 Sec. 371 Date Jan. 21, 1987 Sec. 102(e) Date Jan. 21, 1987 PCT Filed May 9, 1986 PCT Pub. No. WO86/06661 PCT Pub. Date Nov. 20, 1986.The invention relates to a method of sorting cutlery, comprising opto-electronic dynamic recognition and identification of the cutlery. The pieces of cutlery are brought forward in a longitudinal direction one by one behind each other on a moving conveyor belt (12). The movement of the belt is precision linked to a pulsator (13), which emits pulses with a frequency that is directly proportional to the speed of the belt. The pieces of cutlery are brought by the conveyor belt to pass one by one through an optical read-off unit (14) between a light source (32) and a bar (40) of photo-transistors (33) or light-conductors (38) which transmit light to photo-transistors. The bar extends at right angles to the direction of movement of the belt, so that it is partially shaded by the cutlery when this passes, whereupon the photo-transistors in the parts of the bar shaded at any moment are inactivated. At a moment of time which is controlled by the pulsator the standstill of activation is recognized for all photo-transistors in the bar. The standstill of activation for at least certain selected moments of time, representing a corresponding number of optical sections of the cutlery, is communicated to a computer (6) in the form of binary words, which each represent the width of the cutlery in the present section and which together with any further data form a digital signalization of the cutlery. This signalization is scanned with regard to a number of digital signalizations of the different pieces of cutlery that are to be sorted which have been previously programmed in the computer's memory unit. With accord between the scanned one and any of the programmed cutlery signalizations the cutlery is guided to a box (24A-D) corresponding to this type of cutlery or correspondingly. The invention also concerns the apparatus for the execution of the method. |
