公开(公告)号：US12222292B2

公开(公告)日：2025-02-11

申请号：US18042685

申请日：2021-08-23

Applicant: SATAKE CORPORATION

Inventor： Tadashi Matsushita ,  Takuya Nishida ,  Masaaki Sadamaru

IPC: G01N21/85 ,  B07C5/342 ,  B07C5/36 ,  G01N21/84

Abstract: An optical sorter includes a light source configured to irradiate a sorting target in transit on a conveyance route with light, an optical sensor configured to detect light emitted from the light source and associated with the sorting target, a determination portion configured to determine whether the sorting target is a foreign object and/or a defective product based on a signal acquired by the optical sensor with respect to the light associated with the sorting target, and at least one intermediate member disposed at a position located between the light source and the conveyance route in a direction in which the sorting target is irradiated with the light from the light source and located in such a manner that the intermediate member does not affect the detection of the light associated with the sorting target. The at least one intermediate member includes a reflection region on which the light emitted from the light source is reflected. The optical sensor is further configured to detect the light emitted from the light source and reflected on the reflection region.

公开(公告)号：US11858007B2

公开(公告)日：2024-01-02

申请号：US17638090

申请日：2020-04-13

Applicant: SATAKE CORPORATION

Inventor： Takafumi Ito ,  Tadashi Matsushita ,  Masaaki Sadamaru

IPC: B07C5/342 ,  B07C5/36

CPC classification number: B07C5/3425 ,  B07C5/361

Abstract: To provide an optical grain sorter that can reduce the proportion of non-defective grains blown off collaterally, and even in a case in which a plurality of defective grains or the like fall down in a state overlapping each other, can blow off all the defective grains or the like.
The optical granular matter sorter includes a control unit configured to control an ejection time of a compressed gas from an air ejecting unit based on a result of detection obtained by an optical detecting unit, in which the control unit has a comparing unit configured to compare a defect detection time for an object to be sorted by the optical detecting unit and a single-granular matter passage set time set in advance, and a calculating unit configured to multiply the defect detection time by a predetermined coefficient based on a result of comparison obtained by the comparing unit to calculate the ejection time, and in a case in which the defect detection time is less than or equal to the single-granular matter passage set time as the result of comparison obtained by the comparing unit, the calculating unit multiplies the defect detection time by a small coefficient as compared to a case in which the defect detection time exceeds the single-granular matter passage set time to calculate the ejection time, and controls the ejection time of the compressed gas from the air ejecting unit based on a result of calculation.

公开(公告)号：US12222295B2

公开(公告)日：2025-02-11

申请号：US17781795

申请日：2020-12-14

Applicant: SATAKE CORPORATION

Inventor： Tomoyuki Miyamoto ,  Masaaki Sadamaru ,  Hiroaki Takeuchi ,  Tadashi Matsushita

IPC: G01N21/88 ,  B07C5/342 ,  G01N21/85

Abstract: An optical sorter includes a first light source disposed on a first side, a second light source disposed on a second side, an optical sensor configured to detect light during a plurality of scan periods including a first scan period and a second scan period, a determination part configured to determine a foreign object and/or a defective product, and a light source control part. The light source control part is configured to control the first light source and the second light source during the first scan period so as to turn on the first light source and/or the second light source in a first lighting pattern, which is a lighting pattern arbitrarily selected from a lighting pattern in which the first light source and the second light source are at least partially on, a lighting pattern in which only one of the first light source and the second light source is at least partially on, and a lighting pattern in which only the other of the first light source and the second light source is at least partially on, and is also configured to control the first light source and the second light source during the second scan period so as to turn on the first light source and/or the second light source in a second lighting pattern, which is a lighting pattern selected arbitrarily except for the first lighting pattern.

公开(公告)号：US12157147B2

公开(公告)日：2024-12-03

申请号：US18258937

申请日：2021-12-14

Applicant: SATAKE CORPORATION

Inventor： Masaaki Sadamaru ,  Yoshikazu Tateishi

IPC: B07C5/342 ,  B07C5/34 ,  B07C5/36

Abstract: When a granular object is determined to have to be sorted out two or more times in two or more of sort-out necessity/unnecessity determination results determined by a determination portion, a sort-out signal setting portion of an optical sorting apparatus sets a sort-out actuation signal that contains information for actuating an ejector when the granular object advancing in the air passes through a sorting region based on a combination of the sort-out necessity/unnecessity determination results from a predetermined signal setting table.