Title:
OPTICAL SORTER
Document Type and Number:
WIPO Patent Application WO/2021/100372
Kind Code:
A1
Abstract:
Provided is an optical sorter by which it is possible to accurately detect a defect or a foreign substance in an object to be sorted, and to improve the performance of sorting. The optical sorter is provided with a chute obliquely disposed to slide down the object to be sorted, an optical detection unit that detects the object to be sorted at a detection position, and an ejector unit that sorts and removes the object to be sorted on the basis of the result of detection by the optical detection unit, where the optical detection unit comprises an illumination unit that illuminates the detection position, and an imaging unit that captures an image of the object to be sorted at the detection position. The optical sorter is characterized in that the chute is provided with an optical detection slit orthogonal to the slide-down direction of the object to be sorted, and that the optical detection unit causes the imaging unit to capture an image of the object to be sorted sliding down the chute, using the position where the optical detection slit is provided as the detection position.
Inventors:
MIYAMOTO TOMOYUKI (JP)
Application Number:
PCT/JP2020/038906
Publication Date:
May 27, 2021
Filing Date:
October 15, 2020
Export Citation:
Assignee:
SATAKE ENG CO LTD (JP)
International Classes:
B07C5/342; B65G11/00
Domestic Patent References:
| WO2013179758A1 | 2013-12-05 |
Foreign References:
| US4848590A | 1989-07-18 | |||
| JP2005270914A | 2005-10-06 | |||
| JPS58101777A | 1983-06-17 | |||
| JPH08252535A | 1996-10-01 | |||
| JP2009050760A | 2009-03-12 |
Other References:
See also references of EP 4063031A1
Attorney, Agent or Firm:
AIWA INTERNATIONAL PATENT AGENCY (JP)
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