EP2727481B1 - Verfahren zur erfassung der lage eines vorbedruckten materialstreifens in einer maschine der tabak verarbeitenden industrie, und maschine der tabak verarbeitenden industrie - Google Patents

Verfahren zur erfassung der lage eines vorbedruckten materialstreifens in einer maschine der tabak verarbeitenden industrie, und maschine der tabak verarbeitenden industrie Download PDF

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Publication number
EP2727481B1
EP2727481B1 EP13190814.7A EP13190814A EP2727481B1 EP 2727481 B1 EP2727481 B1 EP 2727481B1 EP 13190814 A EP13190814 A EP 13190814A EP 2727481 B1 EP2727481 B1 EP 2727481B1
Authority
EP
European Patent Office
Prior art keywords
machine
material strip
sensor arrangement
print pattern
pattern
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.)
Active
Application number
EP13190814.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2727481A3 (de
EP2727481A2 (de
Inventor
Dirk Sacher
Peter Kalus
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.)
Koerber Technologies GmbH
Original Assignee
Hauni Maschinenbau GmbH
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 Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Priority to PL13190814T priority Critical patent/PL2727481T3/pl
Publication of EP2727481A2 publication Critical patent/EP2727481A2/de
Publication of EP2727481A3 publication Critical patent/EP2727481A3/de
Application granted granted Critical
Publication of EP2727481B1 publication Critical patent/EP2727481B1/de
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Classifications

    • 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
    • A24C5/47—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces
    • A24C5/471—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces by means of a connecting band
    • A24C5/473—Cutting the connecting band
    • 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
    • A24C5/005—Treatment of cigarette paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/046—Sensing longitudinal register of web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/40—Identification
    • B65H2511/413—Identification of image
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/42—Cameras
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/54—Cigarette making

Definitions

  • the invention relates to a method for detecting the position of a pre-printed material strip in a machine of the tobacco processing industry, wherein a periodically recurring print pattern on an endlessly processed material strip is detected and recognized by means of an imaging sensor arrangement and the position of the material strip relative to the machine cycle is determined therefrom.
  • the invention further relates to a correspondingly configured machine in the tobacco processing industry.
  • predetermined, high-contrast print marks are printed on the material strip by the manufacturer. These print marks are usually arranged in such a way that they are covered by material overlap in the finished rod-shaped product, so that the visual impression of the product is not disturbed for the consumer.
  • the material must have sufficient covering power, in particular a sufficient material thickness, and must not be transparent, for example.
  • a considerable overlap of the material strip must be provided in order to reliably cover the print mark, for which additional material is required.
  • any printed material is used more and more in order to stand out from the advertising and to achieve a special recognition value of the respective product.
  • the print marks described above considerably limit the area on the material strip available for any printing by the tobacco processor.
  • test marks are arranged in the area of a cutting line so that the test marks are covered to the outside after a filter sheet has been applied and are therefore not visible from the outside.
  • the DE 102 41 127 A1 discloses a method for monitoring at least one marking on a cigarette or a wrapping paper strip, the contrast being increased by that of the Light rays emanating from the vicinity of the marking are at least partially filtered or masked out by means of an optical unit, for example an aperture.
  • the optical unit must be adapted to the shape of the marking on the wrapping paper strip.
  • the diaphragm opening has the same shape as the marking.
  • the EP 2 486 811 A1 discloses a photocell for detecting the position of a print pattern on the tipping paper conveyed in a filter attachment machine.
  • the EP 2 128 793 A1 discloses a sensor with a digital camera for inspecting sheets of paper conveyed by a transport device.
  • the EP 1 161 888 A2 discloses a sensor in the form of a light sensor or a double light barrier for detecting perforated sections on the covering paper conveyed in a filter attachment machine.
  • the object of the invention is to provide a method for detecting the position of a pre-printed material strip in a machine of the tobacco processing industry and a correspondingly configured machine, which avoid the disadvantages associated with conventional printing marks.
  • the invention solves this problem with the features of the independent claims.
  • the invention uses a suitable periodically recurring print pattern in a finished product outwardly visible area of the material strip as the print pattern to be recognized.
  • This can be any freely definable pattern, which can be provided in particular for advertising purposes. Additional unsightly print marks predefined by the machine manufacturer are no longer required, as a result of which the printable area of the material strip is no longer restricted accordingly.
  • the material strip is also no longer subject to any corresponding restrictions, since there is no longer any need to cover a predefined printed mark which is annoying to consumers. A corresponding material overlap can be omitted, which results in considerable material savings.
  • the print pattern to be recognized can be freely defined within certain limits. These limits are set in particular by the fact that the print pattern to be recognized must have sufficient contrast and a repetition period corresponding to the product cycle.
  • the print pattern to be recognized also differs from the print mark in that, in addition to the print mark function, it performs another function, in particular an advertising function.
  • the print pattern to be recognized is advantageously redefined in the sensor arrangement after a format change.
  • a print pattern adapted to the new format is redefined. It is therefore a variably adaptable print pattern which is not predefined by the machine manufacturer and which can be defined in particular depending on the format.
  • the definition or definition of the print pattern to be recognized is preferably carried out automatically or semi-automatically in an electronic learning step using the sensor arrangement. This can be done, for example, in a test run before the actual production operation, or at the start of the production operation.
  • the sensor arrangement preferably has a learning module which is set up to automatically teach in a suitable periodically recurring pattern on the material strip as the printing pattern to be recognized.
  • the learning module can comprise, for example, a neural network or another algorithmic learning method.
  • the learning module can be implemented by means of software in an electronic data processing device.
  • the data processing device can be provided in the sensor arrangement or can be part of the machine control.
  • An external sensor arrangement for example in a laboratory device, can also be used to teach in a pattern to be recognized.
  • the print pattern to be recognized is preferably stored in the sensor arrangement.
  • the print pattern to be recognized is changed after a change in format or is stored in the sensor arrangement
  • teaching-in can be carried out by a test run of the machine and automatic or manual selection of a suitable print pattern.
  • a database can be provided, for example, in which suitable print patterns that have previously been taught are stored. After a format change, a suitable print pattern assigned to the new format is then selected from the database and defined or stored in the sensor arrangement as the print pattern to be recognized.
  • the database can be stored in an external data processing device, in the machine control or in the sensor arrangement.
  • the machine can preferably be controlled and / or regulated on the basis of the determined position of the material strip relative to the machine cycle.
  • a cutting device of the machine is controlled or regulated for the precise positioning of a cutting line of the material strip.
  • the cutting line can then be repeated and precisely positioned at a desired point. If requested or a corresponding specification, it is ensured that the cutting line does not run through the printed area and is at a sufficient distance from it; and / or that the print on the rod-shaped end product is always positioned in exactly the same place.
  • Other applications of the position signal provided according to the invention are possible.
  • the sensor arrangement comprises a camera system with a line scan camera. Furthermore, the sensor arrangement advantageously has an illumination device in order to facilitate the high-contrast detection of the print pattern.
  • the invention is applicable to any machine in the tobacco processing industry in which a printable or printed material strip, in particular a paper strip, is processed endlessly.
  • Preferred applications relate, for example, to filter attachments, a cigarette making machine strand unit or bobbin loaders.
  • Fig. 1 shows a machine 10 of the tobacco processing industry, in which a printable or printed material strip 11, for example a paper strip, is processed endlessly.
  • the machine 10 comprises a sensor arrangement 14 with an optical camera 15, which is arranged in the machine 10 for imaging the printed side of the material strip 11.
  • the camera 15 is a line scan camera.
  • the line camera 15 extends over the entire width of the material strip 11, as in Fig. 2 is shown.
  • the printed side of the material strip 11 would be in the example Fig. 1 directed upwards, ie facing the sensor arrangement 14.
  • the machine 10 further comprises a machine control 16 and a cutting device 17 for cutting the material strip 11 along periodically repeating cutting lines 14, see Fig. 2 .
  • a preferably touch-sensitive screen terminal 23 is expediently provided for operating the machine 10.
  • a covering paper strip 11 printed with an advertising motif 13, here an elephant is shown, which is processed, for example, in a filter applicator 10.
  • the topping paper 11 processed here in double width each has areas 12 assigned to a cigarette, the advertising motif 13 being repeated identically in each area 12.
  • the advertising motif 13 is thus repeated periodically or equidistantly in the conveying direction.
  • the conveying direction of the material strip 11 is in Fig. 2 marked by an arrow as an example.
  • the areas 12 are separated from one another by section lines 14 perpendicular to the conveying direction and section lines 35 along the conveying direction.
  • the continuous material strip 11 is cut into double-width covering paper sections in the machine 10 by means of the cutting device 17 along the cutting lines 14.
  • the advertising motif 13 is arranged in an area of the topping paper that is visible to the outside after the cigarette is finished, in particular in a central region of the corresponding area 12 of the topping paper. Visible from the outside means in particular that the advertising motif 13 is not covered after the cigarette is finished, ie is not covered by a layer of paper.
  • the cutting device 17 is continuously controlled by the machine control 16 to ensure that the cutting lines 14 lie exactly at the intended positions between the advertising motifs, and in the worst case the advertising motif is not cut.
  • the precise position of the material strip 11 in the machine 10 is continuously determined by means of the sensor arrangement 14.
  • the sensor arrangement 14 comprises an electronic data processing device 18 based on, for example, a microprocessor or microcontroller and an electronic memory 19.
  • the image 19 of a print pattern (target pattern) to be recognized on the material strip 11 is stored in the memory 19.
  • the data processing device 18 contains image recognition software in order to recognize the print pattern stored in the memory in the image data transmitted by the camera system 15 and to determine the position of the print pattern and thus the position of the material strip 11 in the machine 10 therefrom.
  • the image recognition software in particular compares the image data recorded with the camera system 15 with the target print pattern stored in the memory 19.
  • the determined position of the material strip 11 is sent to the machine control 16, which controls the cutting device 17 precisely on this basis or regulates.
  • the measurement resolution of the sensor arrangement 14 is preferably specified by means of an external clock.
  • the clock generator can be, for example, a separate rotary encoder 25.
  • the cycle can be generated, for example, by a controlled rotary drive of the machine 10, the positional relationship being given by the time-distance relationship
  • the sensor arrangement 14 preferably comprises an illumination device 24, preferably a white light source, for illuminating the material strip 11 in the area detected by the sensor arrangement 14.
  • the contrast of the image can be significantly increased by the sensor arrangement 14 by means of the illumination device 24.
  • no additional printed mark for example a plain-colored rectangle, is used as the print pattern to be recognized by the manufacturer, but rather a suitable, sufficiently high-contrast part of the advertising motif 13, which is present anyway Fig. 2 for example, the trunk, the outstretched leg or the entire elephant.
  • An additional print mark is therefore no longer required, and most of the area 12 is available for advertising printing.
  • the sensor arrangement 14 does not have to be adapted to the print pattern to be recognized.
  • the print pattern to be recognized is in particular a pattern visible to the consumer on the end product.
  • the print pattern to be recognized is newly defined in the sensor arrangement 14 and stored in the memory.
  • the data processing device 18 preferably comprises a learning module or a learning software for automatically determining a suitable one to be recognized (Target) pressure pattern is set up on the basis of the signal transmitted by the camera system 15.
  • a test run of the machine 10 is preferably carried out to teach in the print pattern to be recognized.
  • semi-automatic or manual teaching is also possible. In the case of semi-automatic teaching-in, the operator could, for example, see a plurality of possible print patterns on the screen terminal, the operator selecting a print pattern.
  • An image of the material strip 11 with the taught-in print pattern can be displayed on the screen terminal 23 in order to facilitate the sensor adjustment, the representation of the switching point and any change in position of the switching point in the conveying direction for the operator. In this way, the operator can easily set the cutting position of the cuts 14 via the screen terminal 23.
  • a visualization of the quality of the print pattern to be determined and the reading out of diagnostic data, such as, for example, detection reliability, is also easily possible using the screen terminal 23.
  • the learning software used is based, for example, on a neural network or another algorithmic learning method.
  • the learning method preferably includes a plausibility check to the effect that the repetition rate of the taught pattern corresponds to the format cycle.
  • the learning method can include a filter that only allows a pattern to be taught in from the outset at a repetition rate that corresponds to the format cycle. The repetition rate becomes more general of the format when teaching the pattern into the learning process.
  • the determination of the pressure pattern to be recognized in the sensor arrangement 14, in particular after a format change, is not limited to the above method, in particular the sensor arrangement 14 does not necessarily have to comprise a learning module. It is also possible, for example, that a suitable print pattern for each possible format has already been taught in beforehand and has been stored in a database.
  • the database can be an external database and / or can be stored in the sensor arrangement 14, in particular in the memory 18, and / or in the machine control 16.
  • the described pre-teaching can take place with the sensor arrangement 14, but also with another sensor arrangement, in particular also by means of a laboratory device.
  • the print pattern to be recognized can be defined in the sensor arrangement 14 depending on the format.
  • the machine arrangement 20 here comprises a machine 10 as in FIG Fig. 1 and a bobbin loader 21 with a bobbin 22.
  • the bobbin loader 21 is set up for automatically connecting a material strip 11 from an unused bobbin 22 to a material strip from a used bobbin 22 in the production operation.
  • a sensor arrangement 14 ' is arranged in the bobbin loader 21, which is constructed in the same way as that in FIG Fig. 1 sensor arrangement 14 shown and with the same Reference to the printable or printed side of the material strip arranged.
  • the sensor arrangement 14 ′ can be connected to the machine control 16 of the machine 10.
  • the sensor arrangement 14 ′ can be connected to a separate electronic control device of the reel loader 21, which is expediently connected to the control device 16 of the machine 10.
  • the sensor arrangement 14 ′ continuously provides a position signal about the position of the material strip 11 in the reel loader 11. In particular after a change of the bobbin 22, this position signal is available as quickly as possible.
  • the sensor arrangement 14 is preferably synchronized with the sensor arrangement 14 'on the print pattern to be recognized.
  • a print pattern to be recognized by means of the sensor arrangement 14 can in particular be stored in the sensor arrangement 14 ′ via the control device 16 and vice versa.
  • the embodiment according to Fig. 3 comprises a plurality of sensor arrangements 14, 14 'in the machine arrangement 20.
  • the machine arrangement 20 comprises only one sensor arrangement 14 or 14' in one of the machines 10, 21.

Landscapes

  • Wrapping Of Specific Fragile Articles (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP13190814.7A 2012-11-06 2013-10-30 Verfahren zur erfassung der lage eines vorbedruckten materialstreifens in einer maschine der tabak verarbeitenden industrie, und maschine der tabak verarbeitenden industrie Active EP2727481B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13190814T PL2727481T3 (pl) 2012-11-06 2013-10-30 Sposób odczytu położenia zadrukowanego wstępnie pasa materiału w maszynie przemysłu tytoniowego i maszyna przemysłu tytoniowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012220155.6A DE102012220155A1 (de) 2012-11-06 2012-11-06 Verfahren zur Erfassung der Lage eines vorbedruckten Materialstreifens in einer Maschine der Tabak verarbeitenden Industrie, und Maschine der Tabak verarbeitenden Industrie

Publications (3)

Publication Number Publication Date
EP2727481A2 EP2727481A2 (de) 2014-05-07
EP2727481A3 EP2727481A3 (de) 2018-01-03
EP2727481B1 true EP2727481B1 (de) 2020-07-01

Family

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EP13190814.7A Active EP2727481B1 (de) 2012-11-06 2013-10-30 Verfahren zur erfassung der lage eines vorbedruckten materialstreifens in einer maschine der tabak verarbeitenden industrie, und maschine der tabak verarbeitenden industrie

Country Status (4)

Country Link
EP (1) EP2727481B1 (pt-PT)
CN (1) CN103808261B (pt-PT)
DE (1) DE102012220155A1 (pt-PT)
PL (1) PL2727481T3 (pt-PT)

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DE102016005173A1 (de) * 2016-04-29 2017-11-02 Focke & Co. (Gmbh & Co. Kg) Verfahren zur Prüfung von Zigaretten oder Zigarettenpackungen
DE102017118083B4 (de) 2017-08-09 2022-11-24 Sick Ag Sensor zur Erfassung eines Objekts und Verfahren zum Einstellen eines Schaltpunktes
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IT201800006360A1 (it) * 2018-06-18 2019-12-18 Metodo per la lavorazione di un nastro di materiale di incarto per realizzare articoli da fumo
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Also Published As

Publication number Publication date
CN103808261A (zh) 2014-05-21
PL2727481T3 (pl) 2020-11-30
CN103808261B (zh) 2019-04-16
DE102012220155A1 (de) 2014-05-08
EP2727481A3 (de) 2018-01-03
EP2727481A2 (de) 2014-05-07

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