Patent EP0247016A2 successfully refreshed from Google Patents.
EP0247016A2
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A method and a device for assortment of a product flow
Assignee: AGEC AB
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Filing: 1987-05-20
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Granted: —
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Expires: 2007-05-20
Abstract
Abstract In a method and a device for assortment of objects a broadbanded light is emitted from a light source, which light is reflected via a rotary mirror against the objects falling freely immediately after they have left a conveyor belt. The reflected light is led via the other part ot the same surface on the rotary mirror to an optical unit and is reflected against a double detector dividing the light flow into two wide ranges about 1 µm. The detector signals are compared to one another and after processing the resulting signal is caused to actuate means separating the objects mechanically.
Inventors
- 👤 Bertil Larsson
- 👤 Reinhold Hakansson
- 👤 Tommy Andersson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 13:57
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/34; B07C5/342
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
54 words
A method for assortment of objects, where a broad-banded light is emitted and the reflected light is divided into different wavelength ranges and converted to electric signals which are amplified and compared to one another, characterized in that the object can be identified by means of differences in the absorption of the emitted light.
Claim 2
Independent Claim
54 words
A method for assortment of objects, where a broad-banded light is emitted and the reflected light is divided into different wavelength ranges and converted to electric signals which are amplified and compared to one another, characterized in that the object can be identified by means of differences in the absorption of the emitted light.
Claim 3
Dependent Claim
33 words
The method of claim 1, characterized in that the reflected light is filtered and detected within two wide bands about the wavelength of 1 µm for separation of inorganic objects from organic ones.
Claim 4
Dependent Claim
38 words
The method of claim 1, characterized in that the reflected light is filtered by means of two or more filters in the range of from 0.4 to 0.7 µm for assortment according to the color of the object.
Claim 5
Dependent Claim
44 words
The method of claim 1, characterized in that the reflected light is divided by a prism and detected by means of two or more detectors sensitive in the range of from 0.4 to 0.7 µm for assortment according to the color of the object.
Claim 6
Independent Claim
33 words
The method of claims 1-4, characterized in that the emitted and reflected light is refracted against the upper and lower half of the same side of a rotary mirror divided by a partition.
Claim 7
Dependent Claim
28 words
The method of claim 5, characterized in that the rotary mirror has three to eight surfaces, one or more of which can be reflecting and the others non-reflecting.
Claim 8
Independent Claim
28 words
The method of any one of the preceding claims, characterized in that the objects are scanned in a free fall immediately after they have left a conveyor belt.
Claim 9
Independent Claim
27 words
The method of any one of the preceding claims, characterized in that the width of the flow of objects is marked by means of reflecting position indications.
Claim 10
Independent Claim
28 words
The method of any one of the preceding claims, characterized in that the output signal is utilize as a control signal to control means separating the objects mechanically.
Claim 11
Independent Claim
95 words
A device for assortment of objects, which has a light source (3) emitting broadbanded light via a surface (4) on a rotary mirror (5) scanning the objects (15, 17) in a free fall after they have left a conveyor belt (18), the reflected light hitting the other part (8) of the same surface of the rotary mirror (5), the light flow being reflected to an optical unit (9) and refracted against a detector (10) separating the light flow into two wide bands about the wavelength of 1 µm and detecting these at the same time.
Claim 12
Independent Claim
95 words
A device for assortment of objects, which has a light source (3) emitting broadbanded light via a surface (4) on a rotary mirror (5) scanning the objects (15, 17) in a free fall after they have left a conveyor belt (18), the reflected light hitting the other part (8) of the same surface of the rotary mirror (5), the light flow being reflected to an optical unit (9) and refracted against a detector (10) separating the light flow into two wide bands about the wavelength of 1 µm and detecting these at the same time.
Claim 13
Dependent Claim
30 words
The device of claim 10, characterized in that the light flow after passing the optical unit (9) is divided by a prism and detected by two or more detectors (10).
Claim 14
Dependent Claim
39 words
The device of claim 10, characterized in that the light flow after passing the optical unit (9) is caused to hit two or more detectors (10) preceded by filters (25) in the range of from 0.4 to 0.7 µm.
Claim 15
Independent Claim
39 words
The device of claims 10, 11 or 12, characterized in that the start of the scanning range and its end are indicated by means of reflectors (26) which give a more strongly reflected light than any object (15, 17).
Claim 16
Independent Claim
30 words
The device of claims 10, 11, 12 or 13, characterized in that means (14) for separation of nondesired objects are operatively connected to the detector device and controllable by it.
References Cited (Backward Citations)
No citation records indexed.
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