Color sorting machine

Patent metadata

Field	Value
Publication number	US-8985342-B2
Application number	US-201113703898-A
Country	US
Kind code	B2
Filing date	Jun 2, 2011
Priority date	Jun 18, 2010
Publication date	Mar 24, 2015
Grant date	Mar 24, 2015

Abstract

Provided is a color sorting machine in which decreases in yield resulting from the erroneous inclusion of good granules can be prevented by using different selection algorithms and operation ejector nozzle operations resulting therefrom in a first sorting part and a second sorting part. The machine is provided with: a binarization means for binarizing images of granular objects, a flaw-detecting means for extracting flawed parts of granular objects, a reducing means for reducing images of the external contour parts of granular objects, an enlarging means for enlarging images of the flawed parts of granular objects, and a synthesis means for synthesizing the reduced images of the external contours and the enlarged images of the flawed parts; wherein on the basis of an image obtained by this synthesis means, different air-jetting operations are established for the ejection means of a first sorting part and the ejection means of a second sorting part.

First claim

The invention claimed is:

1. A color sorting machine for sorting out a conforming granular object from a non-conforming granular object by color, comprising:
a primary sorting unit including transport means for primary sorting for letting granular objects serving as a material flow down in the form of a belt, an optical detection unit provided along a fall path for a granular object falling down from the transport means, and ejector means provided below the optical detection unit…

Assignees

• Tanaka Norihiko
• Satake Eng Co Ltd

Inventors

• Tanaka Norihiko

Classifications

• B07C5/3425 Primary

  Operations & Transport · mapped topic

• B07C5/366

  Operations & Transport · mapped topic

• G01N21/85

  Physics · mapped topic