METHOD FOR DETECTING MIXING-IN OF BUBBLES IN BOTTLE AFTER CAPPING MACHINING

摘要

PURPOSE:To easily detect the mixing-in of bubbles, by mutually contacting bottles in a feed process to detect the contact sound of the bottles by a parabolic reflector and comparing said contact sound with that of normal bottles free from the mixing-in of bubbles. CONSTITUTION:A turntable 6, a parabolic reflector 11, a bubble detector 12 and a distribution lever are provided to a feed process reaching a packing machine from a capping machine. A bubble detection circuit is constituted of a band-pass filter, an oscillation circuit, a comparator, an AND circuit and a dealy circuit. When a bottle (a) filled with milk and capped is guided to the turntable 6 by a guide 9, the bottle (a) is contacted with the succeeding bottle (a) because the rotational speed of the turntable 6 is slow. A parabolic reflector 11 detects the contact sound of both bottles and compares the frequency of said sound with that of the contact sound of normal bottles free from the mixing of bubbles preset by the bubble detector 12 and, at the time of abnormality, a cylinder is operated to move the distribution lever and an abnormal bottle is excluded from the feed process.