PURPOSE: To remove media preventing a work from flawing, by arranging plural sets of selector units, in which endless plastic ropes are parallelly arranged spacing the same distance and mounting the both sides to pulleys, in series in multi stages.
CONSTITUTION: Plural endless plastic ropes 8aW8c are bridged over pulleys in both ends of a device. A pulley 7a, cutting semicircular grooves, mounts the ropes to be bridged, and the eyes of a sieve are constituted of clearances between each rope 8a, 8b, 8c. The pulley 7a in one end is driven by a motor 6a. A selector unit of such constitution is 5°W10° tilted placing an advancing direction of the rope in the upper, and a plural number of these units are provided in series further providing a step difference. Media in selected materials, placed to be fed to the first line, drop from the clearance between the ropes, further when the media move to the next unit, the selected material accelerates dropping of the media from the rope clearance by a dropping impact and tumbling. In this way, the unit prevents the media from being left in the selected materials and also the selected materials from flawing.
SHIMIZU TOSHIHARU
SEO YOICHI
