US3334240A - Photoelectric scanner with synchronized cutter and photocell offset from light source - Google Patents

Photoelectric scanner with synchronized cutter and photocell offset from light source Download PDF

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Publication number
US3334240A
US3334240A US365951A US36595164A US3334240A US 3334240 A US3334240 A US 3334240A US 365951 A US365951 A US 365951A US 36595164 A US36595164 A US 36595164A US 3334240 A US3334240 A US 3334240A
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US
United States
Prior art keywords
light source
light
sensing device
filter rod
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US365951A
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English (en)
Inventor
James H Black
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brown and Williamson Holdings Inc
Original Assignee
American Tobacco Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Tobacco Co filed Critical American Tobacco Co
Priority to US365951A priority Critical patent/US3334240A/en
Priority to BE663532D priority patent/BE663532A/xx
Priority to DE19651532100 priority patent/DE1532100B1/de
Priority to FI651117A priority patent/FI42289C/fi
Priority to NL6505816A priority patent/NL6505816A/xx
Priority to CH636565A priority patent/CH431356A/fr
Priority to DK233465AA priority patent/DK108232C/da
Priority to ES0312684A priority patent/ES312684A1/es
Priority to LU48565A priority patent/LU48565A1/xx
Priority to GB19643/65A priority patent/GB1066977A/en
Application granted granted Critical
Publication of US3334240A publication Critical patent/US3334240A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/32—Separating, ordering, counting or examining cigarettes; Regulating the feeding of tobacco according to rod or cigarette condition
    • A24C5/34—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes
    • A24C5/3412—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes by means of light, radiation or electrostatic fields
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/28—Cutting-off the tobacco rod
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S131/00—Tobacco
    • Y10S131/907—Ejection or rejection of finished article due to detected or sensed condition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S131/00—Tobacco
    • Y10S131/908—Sensing unique characteristic or specific condition of finished product

Definitions

  • This invention relates to a photoelectric scanning unit and, more particularly, to a photoelectric sensing device for use in the measurement and manufacture of composite filters for cigarettes.
  • Cigarettes are commonly manufactured with integral filter tips which are often of a composite type, i.e., each filter comprises two or more cylindrical segments of dissimilar materials.
  • the composite filter segments are generally assembled in a filter-making machine to form a continuous rod of alternating type segments (e.g., a white cellulose segment, followed by a black carbon-containing paper segment, followed by another white cellulose segment, etc.) and are wrapped in a continuous paper tube.
  • the continuous rod of filter segments is cut into short lengths, each length containing several filter segments. These lengths are then fed to a cigarette-making machine where they are further subdivided by cutting to produce composite filter tips for individual cigarettes.
  • my invention makes use of the fact that the segments used in composite cigarette filters customarily have markedly dissimilar light transmission properties.
  • a beam of light is focussed on the moving continuous rod of filter segments, and a photoelectric sensor detects the amount of light passing or diffusing through the rod.
  • the amount of light diffusing through the rod varies as the different type filter segments move past the sensing station, and the electrical output voltage of the photoelectric sensor varies accordingly. This voltage is then differentiated with respect to time so that an electrical output signal is generated whenever an interface between two dissimilar type segments moves past the sensing station.
  • transistions from light to dark, and vice versa take a shorter time) than the corresponding fluctuations of the light directly diffusing through the rod.
  • the broadening of the transitions with directly diffusing light is caused by the shadow of the filter interface sweeping across the sensing device. There is no such shadow effect when only light indirectly diffusing through the rod is permitted to reach the light sensor.
  • the exclusion of directly diffused light from the sensor is accomplished in my invention by offsetting the sensor from the light source along the length of the filter rod by a distance great enough so that no direct radiation from the light source falls on the sensor.
  • the exact distance of this offset depends upon the sharpness of the focus of light from the light source upon the surface of the filter rod, the angle of incidence of direct radiation from the light source within the rod, and the size of the light aperture associated with the sensor.
  • my invention includes a control device for synchronizing the movement of a cutting blade with the passage therepast of a composite cigarette filter rod composed essentially of alternate sections of different degrees of opacity to light.
  • the control dev1ce comprises a light source, a photoelectric sensing device positioned to receive solely the light transmitted from the light source through the filter rod, means for guiding the movement of the filter rod axially between the light source and the sensing device, and means for producing an electrical output signal responsive to the passagebetween the light source and the sensing device of an interface between adjoining alternate filter rod sections
  • the electrical output signal is capable of comparison with a reference signal responsive to the movement of the cutting blade.
  • the sensing device is axially offset from the llght source by a distance sufficient to prevent passage of light transversely through the filter rod directly into the sensing device.
  • FIG. 1 is a sectional side view of the photoelectric scanning station of a preferred embodiment of my invention
  • FIG. 2 is a sectional view taken along line 2-2 of FIG. 1;
  • FIG. 3 shows the electrical assembly of the embodimerit in block diagram form
  • FIG. 4 shows the detailed electronic circuitry employed in the embodiment.
  • a housing 1 of Bakelite or similar material contains a tubular passage 2 through which the continuous rod of alternating filter segments 11 and 12 passes.
  • An incandescent light source 3, supported by a brace 4, is positioned above the housing.
  • the top of the housing is drilled out to accommodate a condenser lens 5, and a smaller light channel hole 6 communicates with the filter rod passage 2.
  • the under portion of the housing has a cavity which contains a photo multipler tube 9 and an aperture lens 8.
  • a small light channel hole 7 connects this cavity with the filter rod passage 2.
  • the voltage of the photomultiplier varies according to the amount of diffused light falling upon the cathode of the tube 9 and describes a rectangular Waveform as shown at A in FIG. 3.
  • This photomultiplier voltage is applied to a resistor-capacitor differentiator 22 to produce the Waveform B.
  • the negative portion of this waveform B is electronically removed by a clipping circuit 23 and the resulting clipped waveform C is electronically amplified by a circuit 24 to produce a scanner output signal D.
  • the clipping operation permits the scanning unit to distinguish one type of segment transition only, c.g., a white to black transition and not black to white transitions.
  • V-1 is the photomultiplier tube
  • R-l is its load resistor
  • C-1 and R2 form the differentiation circuit 22
  • V-2 and its associated circuitry form the clipping circuit 23.
  • the cathode of V-2 is biased slightly positive so that only the positive excursions of the differentiated signal at its grid are amplified.
  • V-3 and V-4 together with their associated conventional circuitry comprise the amplifier 24.
  • the output signal of the scanning unit appears at the cathode of V-4.
  • a control device for synchronizing the movement of a cutting blade with the passage therepast of a composite cigarette filter rod composed essentially of alternate sections of different degrees of opacity to light, the device comprising a light source, a photoelectric sensing device positioned to receive solely the light transmitted from the light source through the filter rod, means for guiding movement of the filter rod axially between the light source and the sensing device, means for producing an electrical output signal responsive to the passage between the light source and the sensing device of an interface between adjoining alternate filter rod sections,
  • said output signal being capable of comparison with a reference signal responsive to the movement of the cutting blade, the sensing device being axially offset from the light source by a distance sufficient to prevent passage of light transversely through the filter rod directly into the sensing device.
  • a control device for synchronizing the movement of a cutting blade with the passage therepast of a composite cigarette filter rod composed essentially of alternate sections of different degrees of opacity to light, the device comprising a light source, a photoelectric sensing device positioned to receive solely the light transmitted from the light source through the filter rod, means for guiding movement of the filter rod axially between the light source and the sensing device, means for producing an electrical output signal responsive to the passage between the light source and the sensing device of an interface between adjoining alternate filter rod sections, said output signal being capable of comparison with a reference signal responsive to the movement of the cutting blade, the sensing device being axially offset from the light source by a distance greater than the greatest axial distance within the material attained by direct radiation from the light source.
  • a control device for synchronizing the movement of a cutting blade with the passage therepast of a composite cigarette filter rod composed essentially of alternate sections of different degrees of opacity to light comprising a light source, a photoelectric sensing device positioned to receive solely the light transmitted from the light source through the filter rod, means for guiding movement of the filter rod axially between the light source and the sensing device, means for producing an electrical output signal responsive to the passage between the light source and the sensing device of an interface between adjoining alternate sections of the filter rod, said output signal being capable of comparison with a reference signal responsive to the movement of the cutting blade, the sensing device being axially offset from the light source by a distance greater than the axial distance from the axis of the light source to the furthest portion of the filter rod illuminated by direct radiation from the light source.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Facsimile Scanning Arrangements (AREA)
US365951A 1964-05-08 1964-05-08 Photoelectric scanner with synchronized cutter and photocell offset from light source Expired - Lifetime US3334240A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US365951A US3334240A (en) 1964-05-08 1964-05-08 Photoelectric scanner with synchronized cutter and photocell offset from light source
DE19651532100 DE1532100B1 (de) 1964-05-08 1965-05-06 Einrichtung zum Steuern einer Schneidvorrichtung
BE663532D BE663532A (da) 1964-05-08 1965-05-06
NL6505816A NL6505816A (da) 1964-05-08 1965-05-07
FI651117A FI42289C (fi) 1964-05-08 1965-05-07 Ohjauslaite koneissa savukkeensuodattimen valmistamiseksi
CH636565A CH431356A (fr) 1964-05-08 1965-05-07 Dispositif de commande d'une lame pour couper une tige filtrante de cigarette
DK233465AA DK108232C (da) 1964-05-08 1965-05-07 Fotoelektrisk styreapparat.
ES0312684A ES312684A1 (es) 1964-05-08 1965-05-07 Un dispositivo de control para sincronizar el movimiento de una cuchilla, utilizado en la fabricacion de filtros de cigarrillos.
LU48565A LU48565A1 (da) 1964-05-08 1965-05-10
GB19643/65A GB1066977A (en) 1964-05-08 1965-05-10 Improvements in photoelectric scanning and signalling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US365951A US3334240A (en) 1964-05-08 1964-05-08 Photoelectric scanner with synchronized cutter and photocell offset from light source

Publications (1)

Publication Number Publication Date
US3334240A true US3334240A (en) 1967-08-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
US365951A Expired - Lifetime US3334240A (en) 1964-05-08 1964-05-08 Photoelectric scanner with synchronized cutter and photocell offset from light source

Country Status (10)

Country Link
US (1) US3334240A (da)
BE (1) BE663532A (da)
CH (1) CH431356A (da)
DE (1) DE1532100B1 (da)
DK (1) DK108232C (da)
ES (1) ES312684A1 (da)
FI (1) FI42289C (da)
GB (1) GB1066977A (da)
LU (1) LU48565A1 (da)
NL (1) NL6505816A (da)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818223A (en) * 1973-03-08 1974-06-18 Liggett & Myers Inc Device for detecting carbon on cigarette filter tips
US3854587A (en) * 1972-06-29 1974-12-17 Gallaher Ltd Optical inspection apparatus
US3980567A (en) * 1974-03-22 1976-09-14 Amf Incorporated Optical cigarette end inspection method and device
US4001579A (en) * 1974-03-13 1977-01-04 Baumgartner Papiers S.A. Device for controlling composite cigarette filter rods
US4025770A (en) * 1974-08-30 1977-05-24 Hauni-Werke Korber & Co., Kg Apparatus for monitoring rod-shaped commodities in cigarette making machines or the like
USRE29839E (en) * 1972-06-29 1978-11-21 Gallaher Ltd. Optical inspection apparatus
US4147173A (en) * 1974-10-20 1979-04-03 Hauni Werke Koerber & Co. Kg. Apparatus for monitoring rod-shaped commodities in cigarette making machines or the like
DE2816948A1 (de) * 1977-10-19 1979-04-26 Baumgartner Papiers Sa Verfahren zur ueberpruefung eines stranges
US4941482A (en) * 1987-07-31 1990-07-17 Korber Ag Apparatus for measuring the density of a tobacco stream
US4944314A (en) * 1986-07-30 1990-07-31 Molins Plc Cigarette ends testing
US20050054501A1 (en) * 2001-12-27 2005-03-10 Dierk Schroder Device and system for measuring the properties of multi-segmented filters and corresponding method
EP1557100A1 (de) * 2004-01-22 2005-07-27 Hauni Maschinenbau AG Filterstrangprüfung
EP1702524A1 (de) * 2005-03-17 2006-09-20 Hauni Maschinenbau AG Erkennung von Inhomogenitäten in einem Filterstrang
CN104608175A (zh) * 2015-02-10 2015-05-13 广东中烟工业有限责任公司 一种气动进刀机构的制造方法
EP3682749A1 (de) * 2019-01-16 2020-07-22 Hauni Maschinenbau GmbH Verfahren zum betreiben einer maschine der tabak verarbeitenden industrie und entsprechende maschine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4805641A (en) * 1985-07-31 1989-02-21 Korber Ag Method and apparatus for ascertaining the density of wrapped tobacco fillers and the like

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1984051A (en) * 1933-09-06 1934-12-11 United Eng Foundry Co Control system for flying shears
US2003027A (en) * 1934-05-26 1935-05-28 Westinghouse Electric & Mfg Co Control for shearing apparatus
US2659823A (en) * 1951-09-21 1953-11-17 Jr Carl A Vossberg Measuring system
US2738007A (en) * 1954-12-28 1956-03-13 Dunlop Tire & Rubber Corp Cutting machine having photoelectric detectors for severing strips of fabric of predetermined width from a length thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB918077A (en) * 1960-01-05 1963-02-13 Reginald Charles Bolt Apparatus for inspecting rod-like articles having transparent or translucent spaces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1984051A (en) * 1933-09-06 1934-12-11 United Eng Foundry Co Control system for flying shears
US2003027A (en) * 1934-05-26 1935-05-28 Westinghouse Electric & Mfg Co Control for shearing apparatus
US2659823A (en) * 1951-09-21 1953-11-17 Jr Carl A Vossberg Measuring system
US2738007A (en) * 1954-12-28 1956-03-13 Dunlop Tire & Rubber Corp Cutting machine having photoelectric detectors for severing strips of fabric of predetermined width from a length thereof

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854587A (en) * 1972-06-29 1974-12-17 Gallaher Ltd Optical inspection apparatus
USRE29839E (en) * 1972-06-29 1978-11-21 Gallaher Ltd. Optical inspection apparatus
US3818223A (en) * 1973-03-08 1974-06-18 Liggett & Myers Inc Device for detecting carbon on cigarette filter tips
US4001579A (en) * 1974-03-13 1977-01-04 Baumgartner Papiers S.A. Device for controlling composite cigarette filter rods
US3980567A (en) * 1974-03-22 1976-09-14 Amf Incorporated Optical cigarette end inspection method and device
US4025770A (en) * 1974-08-30 1977-05-24 Hauni-Werke Korber & Co., Kg Apparatus for monitoring rod-shaped commodities in cigarette making machines or the like
US4147173A (en) * 1974-10-20 1979-04-03 Hauni Werke Koerber & Co. Kg. Apparatus for monitoring rod-shaped commodities in cigarette making machines or the like
DE2816948A1 (de) * 1977-10-19 1979-04-26 Baumgartner Papiers Sa Verfahren zur ueberpruefung eines stranges
US4944314A (en) * 1986-07-30 1990-07-31 Molins Plc Cigarette ends testing
US4941482A (en) * 1987-07-31 1990-07-17 Korber Ag Apparatus for measuring the density of a tobacco stream
US20050054501A1 (en) * 2001-12-27 2005-03-10 Dierk Schroder Device and system for measuring the properties of multi-segmented filters and corresponding method
EP1557100A1 (de) * 2004-01-22 2005-07-27 Hauni Maschinenbau AG Filterstrangprüfung
US20050163363A1 (en) * 2004-01-22 2005-07-28 Hauni Maschinenbau Ag Continuous filter rod testing
JP2005204665A (ja) * 2004-01-22 2005-08-04 Hauni Maschinenbau Ag フィルター棒状体を検査するための装置、機械及び方法
EP1702524A1 (de) * 2005-03-17 2006-09-20 Hauni Maschinenbau AG Erkennung von Inhomogenitäten in einem Filterstrang
US20060207616A1 (en) * 2005-03-17 2006-09-21 Hauni Maschinenbau Ag Detection of non-homogeneities in a continuous filter rod
CN104608175A (zh) * 2015-02-10 2015-05-13 广东中烟工业有限责任公司 一种气动进刀机构的制造方法
CN104608175B (zh) * 2015-02-10 2017-01-11 广东中烟工业有限责任公司 一种气动进刀机构的制造方法
EP3682749A1 (de) * 2019-01-16 2020-07-22 Hauni Maschinenbau GmbH Verfahren zum betreiben einer maschine der tabak verarbeitenden industrie und entsprechende maschine

Also Published As

Publication number Publication date
ES312684A1 (es) 1966-03-01
CH431356A (fr) 1967-02-28
GB1066977A (en) 1967-04-26
LU48565A1 (da) 1965-07-14
FI42289B (da) 1970-03-02
BE663532A (da) 1965-09-01
FI42289C (fi) 1970-06-10
DE1532100B1 (de) 1970-05-27
NL6505816A (da) 1965-11-09
DK108232C (da) 1967-10-23

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