Optics: measuring and testing – Inspection of flaws or impurities
Reexamination Certificate
1999-04-20
2001-05-01
Font, Frank G. (Department: 2877)
Optics: measuring and testing
Inspection of flaws or impurities
C356S445000
Reexamination Certificate
active
06226078
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a device for checking units composed of a plurality of parts, in particular of a plurality of individual objects, material layers or the like, for example cigarette groups, bobbins, material webs etc., with respect to complete and/or correct formation in a checking device with a checking member which has a number of light-sensitive checking elements, and with an evaluation device.
In packaging technology, it is necessary, principally in conjunction with packaging machines, for different objects to be checked with respect to correct formation, but also with respect to consumption (for example packaging material). Mechanical checking members previously used are no longer suitable for high-capacity packaging machines of newer generations. For this reason, increasing use is being made of optoelectronic monitoring members in order to check objects with respect to their correct formation continuously or from time to time.
Multiphase monitoring and checking tasks also have to be carried out in packaging cigarettes. Thus, for each cigarette pack it is necessary for the complete and correct assembly of cigarette groups to be monitored, and for the correct configuration of the packaging material to be monitored etc.
SUMMARY OF THE INVENTION
It is the object of the invention to propose a monitoring device which can be used multifariously and delivers correct checking results, even in particular, in the case of packaging machines with quick cycle times.
In order to achieve this object, the device according to the invention is characterized in that its checking member is an CCD linear array chip with a plurality of light-sensitive components as checking elements, and in that the CCD linear array chip is directed transverse to the objects or layers of material webs which are to be checked in such a way that a profile of the object to be checked can be detected by the CCD linear array chip.
A CCD linear array chip is known to be an elongated optoelectronic member with a multiplicity of light-sensitive elements which are arranged next to one another and transmit an electronic signal to an evaluation unit in accordance with the light picked up. According to the invention, such a CCD linear array chip is directed as part of the checking device or the checking member with the longitudinal extent transverse to the object (for example cigarettes), material layers (for example of a bobbin) or material web (a plurality of layers arranged one above another) to be checked. Assigned to the checking device or the checking member are preferably light sources which illuminate the objects to be checked in an optimum fashion. Furthermore, arranged upstream of the CCD linear array chip is preferably an optical system or a lens-diaphragm system, either of which feeds the light picked up to the CCD linear array chip in the dedicated fashion. In the process one or more diaphragms might protect the CCO linear array chip from external light sources and also improve focusing.
The profile taken by the CCD linear array chip is processed in an evaluation device, specifically adjusted by means of a reference image.
REFERENCES:
patent: 3473037 (1969-10-01), Schmermund
patent: 4053056 (1977-10-01), Day
patent: 4445520 (1984-05-01), Knight et al.
patent: 4486098 (1984-12-01), Buchegger et al.
patent: 4644150 (1987-02-01), Kuga et al.
patent: 4682038 (1987-07-01), Focke
patent: 4767924 (1988-08-01), Giebel et al.
patent: 5223915 (1993-06-01), Neri
patent: 5235649 (1993-08-01), Reda
patent: 5315366 (1994-05-01), Inada et al.
patent: 5341824 (1994-08-01), Fletcher et al.
patent: 5646733 (1997-07-01), Bieman
patent: 5686729 (1997-11-01), Bittar et al.
patent: 5966218 (1999-10-01), Bokelman et al.
patent: 5969823 (1999-10-01), Wurz et al.
patent: 1 532 268 (1971-11-01), None
patent: 29 19 579 (1979-12-01), None
patent: 36 13 515 (1987-10-01), None
patent: 34 07 168 (1992-07-01), None
patent: 41 00 792 (1992-07-01), None
patent: 44 24 045 (1996-01-01), None
patent: 196 14 920 (1997-08-01), None
patent: 196 42 793 (1998-04-01), None
patent: 197 04 718 (1998-08-01), None
patent: 157 087 (1985-10-01), None
patent: 173 613 (1986-03-01), None
patent: 424 330 (1991-04-01), None
patent: 518 141 (1992-12-01), None
patent: 729 025 (1996-08-01), None
patent: 2709472 (1995-03-01), None
Focke Heinz
Sinnerbrink Ralf
Focke & Co. (GmbH & Co.)
Font Frank G.
Stafira Michael P.
Sughrue Mion Zinn Macpeak & Seas, PLLC
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