Method to detect man-made fibers and/or defective fibers and/or

Details Method to detect man-made fibers and/or defective fibers and/or Method to detect man-made fibers and/or defective fibers and/or

1992-11-25

1994-05-24

Rosenberger, Richard A.

Optics: measuring and testing

Inspection of flaws or impurities

Textile inspection

356239, 356430, 356 73, G01N 2100

Patent

active

053153677

ABSTRACT:
Method to detect manmade fibres, defective fibres and/or other foreign materials in the processing of silk waste and to classify and count the faults detected in the lap of silk fibres leaving a drawing frame for instance, the method arranging that a substantially defined zone of the lap of silk fibres (20) made substantially parallel is illuminated by transparency with white light (23) and is scanned by a telecamera (24) associated with a data processing system (27) and is also illuminated by transparency with polarized light (25) and is scanned at the same time by a telecamera (26), which too is associated with the data processing system (27), images (14-15) taken by the telecameras (24-26) being processed and compared to determine the quantity, position, type and length of the faults of manmade, foreign or defective fibres. Apparatus to detect manmade fibres in the processing of silk waste in the form of fibres and to classify and count faults detected in a lap of silk fibres leaving a drawing frame, for instance, the apparatus comprising a transparent surface (36 ) on which is laid a lap of silk fibres (20) made substantially parallel, on which are present a first source of light and a second source of light, one of the sources being a source of white light (23) while the other source is a source of polarized light (25), the sources of light cooperating with at least one telecamera (24-26) positioned on the opposite side of the transparent surface (36) and associated with a data processing unit (27) and an identification unit (13).

REFERENCES:
patent: 2824488 (1958-02-01), Bridges
patent: 3421820 (1969-01-01), Heubschman
patent: 3841761 (1974-10-01), Selgin
patent: 4692799 (1987-09-01), Saitoh et al.
patent: 4839943 (1989-06-01), Leifeld
patent: 4865445 (1989-09-01), Kuriyama et al.
patent: 5068799 (1991-11-01), Jarrett, Jr.

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