WO2021152653A1 - Procédé d'inspection et appareil d'inspection pour filtre pour article à fumer - Google Patents

Procédé d'inspection et appareil d'inspection pour filtre pour article à fumer Download PDF

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Publication number
WO2021152653A1
WO2021152653A1 PCT/JP2020/002724 JP2020002724W WO2021152653A1 WO 2021152653 A1 WO2021152653 A1 WO 2021152653A1 JP 2020002724 W JP2020002724 W JP 2020002724W WO 2021152653 A1 WO2021152653 A1 WO 2021152653A1
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WO
WIPO (PCT)
Prior art keywords
filter element
image
filter
region
size
Prior art date
Application number
PCT/JP2020/002724
Other languages
English (en)
Japanese (ja)
Inventor
慎也 楠
純平 田中
Original Assignee
日本たばこ産業株式会社
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 日本たばこ産業株式会社 filed Critical 日本たばこ産業株式会社
Priority to PL439641A priority Critical patent/PL439641A1/pl
Priority to JP2021519181A priority patent/JP6921366B1/ja
Priority to PCT/JP2020/002724 priority patent/WO2021152653A1/fr
Priority to DE112020002035.5T priority patent/DE112020002035B4/de
Publication of WO2021152653A1 publication Critical patent/WO2021152653A1/fr

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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
    • A24C5/32—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
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0287—Manufacture of tobacco smoke filters for filters with special features for composite filters

Definitions

  • the present invention relates to an inspection method and an inspection device for a filter for smoking articles.
  • Patent Document a device for detecting that a short segment having a length close to the diameter of the filter rod is erroneously rotated during a manufacturing process.
  • Patent Document 1 targets a multi-segment rod after the segment is wrapped in wrapping paper. That is, the inspection method of Patent Document 1 is based on the principle of detecting the deformation of the wrapping paper caused by the rotational arrangement of the segments in the multi-segment rod.
  • the present invention has been made in view of the above points, and one of the objects thereof is to detect an abnormality in the orientation of the filter element before the filter element is wrapped in molded paper. ..
  • one aspect of the present invention is a method of inspecting a filter rod composed of a plurality of cylindrical filter elements arranged along the axial direction of the cylinder and wrapped with molded paper. The step of illuminating the plurality of filter elements arranged along the axial direction from the first direction and the step of illuminating the plurality of filter elements from the first direction before wrapping the plurality of filter elements with the molded paper.
  • the image area corresponds to the position of the first filter element and the second image area corresponding to the position of the second filter element. including.
  • the plurality of filter elements include at least a first filter element, a second filter element, and a third filter element, and the third filter element.
  • the step of setting the image area is a first image area corresponding to the position of the first filter element as the image area.
  • the step of setting the second image area corresponding to the position of the second filter element is a filter element whose axial length is longer than the diameter of the cylinder.
  • the first and second filter elements are filter elements whose axial length is shorter than the diameter of the cylinder.
  • another aspect of the present invention includes, in the above aspect, a step of calculating the size of the bright region or the size of the dark region by binarizing the pixel values in the image region.
  • the size of the bright region in the image region is equal to or larger than a predetermined threshold value, or the size of the dark region in the image region is A step of determining that the arrangement of the predetermined filter element is normal when the value is equal to or less than the predetermined threshold value is included.
  • the size of the bright region in the image region is equal to or less than a predetermined threshold value, or the size of the dark region in the image region is A step of determining that the arrangement of the predetermined filter element is abnormal when the threshold value is equal to or higher than the predetermined threshold value is included.
  • the size of the bright region in the first image region and the size of the bright region in the second image region are predetermined threshold values.
  • the arrangement of the first and second filter elements is performed. Includes a step to determine that is normal.
  • Another aspect of the present invention is an inspection device for inspecting a filter rod in which a plurality of cylindrical filter elements are arranged along the axial direction of the cylinder and wrapped with molded paper.
  • a lighting unit configured to illuminate the plurality of filter elements arranged along the axial direction from the first direction in a step before wrapping the plurality of filter elements with the molded paper, and the first.
  • An imaging unit configured to image the plurality of filter elements illuminated from a direction from a second direction to generate image data, and an image area corresponding to a predetermined filter element position in the image data are set.
  • the inspection apparatus includes an image processing unit configured to determine the quality of the arrangement of the predetermined filter element based on the size of the bright region or the size of the dark region in the image region.
  • the second direction forms an angle in the range of 30 ° to 150 ° with respect to the first direction.
  • the present invention it is possible to detect an abnormality in the orientation of the filter element before the filter element is wrapped in molded paper.
  • a cylindrical filter element according to an embodiment of the present invention is shown.
  • a cylindrical filter element according to an embodiment of the present invention is shown.
  • a cylindrical filter element according to an embodiment of the present invention is shown.
  • the inspection apparatus which concerns on one Embodiment of this invention is shown.
  • An example of the image data generated by the imaging unit is shown.
  • An example of the image data generated by the imaging unit is shown.
  • An example of the image data generated by the imaging unit is shown.
  • An example of binarization processing in the image processing method according to the embodiment of the present invention is shown.
  • An example of binarization processing in the image processing method according to the embodiment of the present invention is shown.
  • An example of binarization processing in the image processing method according to the embodiment of the present invention is shown.
  • FIG. 1A is a perspective view showing a cylindrical filter element constituting a filter for a cylindrical smoking article according to an embodiment of the present invention.
  • the first filter element 101 and the second filter element 102 are alternately arranged along the cylindrical axis direction.
  • the first filter element 101 is arranged adjacent to one end and the other end of the second filter element 102 arranged in the center, and these three filter elements 101 and 102 form one unit 103. ing.
  • the number of filter elements included in one unit 103 may be more than three.
  • the unit 103 including the first filter element 101 and the second filter element 102 is transported in a predetermined transport direction (for example, the direction Z along the cylindrical axis) by a transport device (not shown) so that the filter elements are not separated.
  • the side surface of the unit 103 is integrally covered with molded paper.
  • the unit 103 wrapped in molded paper is referred to as a filter rod in the present specification.
  • the filter rod is cut as an individual finished product by cutting at a portion near the center of the second filter element 102 (for example, the position P shown by the dotted line in FIG. 1A) so that the second filter element 102 is divided into two elements. Separated into filters.
  • one completed filter is a molded paper that covers / wraps the first filter element 101, the second filter element 102 cut in half, and the outer periphery of the side surface of the first filter element 101 and the second filter element 102. It is composed of and.
  • the finished filter can be used as a component for smoking articles.
  • the first filter element 101 and the second filter element 102 are made of, for example, acetate fibers, and have a function of filtering tobacco smoke or aerosol generated from the tobacco material constituting the smoking article when the smoking article is used.
  • the first filter element 101 and the second filter element 102 are configured to have different characteristics. For example, only one of the first filter element 101 and the second filter element 102 may contain activated carbon.
  • the first filter element 101 and the second filter element 102 have a cylindrical shape.
  • the length of the second filter element 102 in the longitudinal direction (that is, the direction of the cylinder axis) is sufficiently longer than the diameter of the cylinder.
  • the length of the first filter element 101 in the cylindrical axis direction is about the same as the diameter of the cylinder (for example, 1.2 times the diameter of the cylinder) or less. Therefore, when the first filter element 101 is arranged adjacent to the second filter element 102 on the transport device, or after the first filter element 101 and the second filter element 102 are once aligned as the unit 103, the unit 103 is moved.
  • the direction of the cylindrical axis of the first filter element 101 is different from the direction of the cylindrical axis of the second filter element 102 due to the rotation or "overturning" of the first filter element 101 during the transfer on the transfer device. It can happen relatively easily.
  • the cylindrical axis of the first filter element 101 is in the same horizontal plane as the second filter element 102 (for example, the surface on which the unit 103 is placed on the transport device), but the second filter element 102.
  • the first filter element 101 is "overturned” and arranged by the cylindrical axis of the first filter element 101 facing in the vertical direction orthogonal to the horizontal plane in which the second filter element 102 exists. Indicates the situation.
  • the first filter element 101 is not arranged properly as shown in FIG. 1A, and is not as shown in FIGS. 1B and 1C. Proper placement is possible. In such an improper arrangement, a problem occurs in the process of wrapping the unit 103 including the first filter element 101 and the second filter element 102 with the molding paper (for example, the wrapping device stops due to an error). Or, even if it can be wrapped with molded paper, the orientation of the first filter element 101 is incorrect, so that the filter rod obtained after packaging becomes a defective product.
  • FIG. 2 shows an inspection device 200 according to an embodiment of the present invention.
  • the inspection device 200 includes an illumination unit 220, an image pickup unit 240, and an image processing unit 260.
  • the inspection device 200 inspects whether or not the first filter element 101 is arranged in an appropriate direction by using the image of the unit 103 including the first filter element 101 and the second filter element 102 imaged by the imaging unit 240. It is configured to do.
  • the illumination unit 220 is a light source that emits illumination light toward the unit 103 on the transport device 280.
  • the image pickup unit 240 is an optical sensor that takes an image of the unit 103 on the transport device 280 illuminated by the illumination light, generates electronic image data, and outputs the image data.
  • the illumination unit 220 is arranged so as to illuminate the unit 103 from the first direction D1, and the image pickup unit 240 is arranged so as to image the unit 103 from the second direction D2 different from the first direction D1. More specifically, the illumination unit 220 is arranged so as to illuminate the unit 103 from the first direction D1 substantially parallel to the mounting surface of the transport device 280 on which the unit 103 is mounted, and the imaging unit 240.
  • the first direction D1 and the second direction D2 may be set to form an angle in the range of 30 ° to 150 ° with respect to each other.
  • the image processing unit 260 is a computer that processes the image data generated by the image capturing unit 240.
  • the image processing unit 260 includes at least a processor 262, a memory 264, and a communication interface 266.
  • the memory 264 stores a computer program for performing image processing described later, another computer program (for example, an operating system, etc.), and various setting data.
  • the communication interface 266 transmits / receives data to / from an external device.
  • the communication interface 266 receives image data from at least the image pickup unit 240.
  • the received image data is temporarily stored in the memory 264.
  • the processor 262 reads out the image processing program and the image data received from the image pickup unit 240 from the memory 264, and executes the processing according to the image processing program.
  • FIG. 3A, 3B, and 3C show examples of image data generated by the imaging unit 240, respectively.
  • the image data of FIG. 3A is an image of a unit 103 in which the first filter element 101 and the second filter element 102 are arranged in the directions shown in FIG. 1A, respectively.
  • the image data of FIG. 3B is the unit 103 arranged in the orientation as shown in FIG. 1B
  • the image data of FIG. 3C is the unit 103 arranged in the orientation as shown in FIG. 1C.
  • Each is an image.
  • the portion of the cylindrical side surface of the first filter element 101 and the second filter element 102 facing the illumination unit 220 becomes the illumination light from the illumination unit 220. While the image is illuminated and bright, the portion opposite to the illumination unit 220 (the lower half in FIG. 3A) is not exposed to the illumination light from the illumination unit 220 and appears dark.
  • the cylindrical side surface on the illumination unit 220 side becomes a bright image area A, and similarly in the other first filter element 101.
  • the side surface of the cylinder on the side of the illumination unit 220 is a bright image area B.
  • the illumination unit 220 is used. Since the angle at which the illumination light hits the surface of the side surface of the cylinder becomes shallow, the brightness gradually decreases.
  • one of the second filter element 102 and the first filter element 101 is reflected in the same manner as in FIG. 3A.
  • the bottom surface of the other side of the first filter element 101 faces the illumination unit 220 side, the cylindrical side surface thereof is not illuminated by the illumination light from the illumination unit 220.
  • the other side of the first filter element 101 is exposed to only ambient light, and the whole is dimly reflected. Therefore, the portion corresponding to the image area A in FIG. 3A is a dim image area A in FIG. 3B.
  • one of the second filter element 102 and the first filter element 101 is reflected in the same manner as in FIG. 3A.
  • the bottom surface of the other side of the first filter element 101 (left side in FIG. 3C) is visible, the bottom surface is illuminated only by ambient light because the bottom surface does not face the illumination unit 220 side, and the entire bottom surface is exposed. It is dimly reflected. Therefore, in FIG. 3C, the portion corresponding to the image region A in FIG. 3A is the semicircular portion of the dim circular bottom surface of the first filter element 101 and the background (for example, a part of the mounting surface of the transport device 280). It is an image area A including.
  • FIG. 4 is a flowchart for explaining the operation of the inspection device 200 according to the embodiment of the present invention.
  • the illumination unit 220 illuminates the unit 103 including the first filter element 101 and the second filter element 102 on the transfer device 280 from the first direction D1.
  • the imaging unit 240 images the unit 103 on the transport device 280 illuminated by the illumination light from the second direction D2 and generates image data.
  • the image data is sent from the imaging unit 240 to the image processing unit 260.
  • the image processing unit 260 determines whether the orientation of the first filter element 101 is good or bad by processing the image data. This image processing will be described below.
  • FIG. 5 shows an image processing method 500 according to an embodiment of the present invention carried out by the image processing unit 260 of the inspection device 200 for inspecting whether or not the first filter element 101 is arranged in an appropriate orientation. It is a flowchart which shows.
  • the image processing method 500 includes a plurality of processing steps, each processing step being performed in a different order than shown in FIG. 5 and described below, where technically or logically possible. You may. Also, some of the processing steps may be omitted if not needed.
  • the processor 262 of the image processing unit 260 receives the image data acquired from the imaging unit 240 (or the image data acquired from the imaging unit 240, temporarily stored in the memory 264, and then read from the memory 264).
  • Image area A and image area B are set.
  • the image area A and the image area B are image areas corresponding to the positions of the first filter element 101, as shown in FIGS. 3A, 3B, and 3C. More specifically, the image area A and the image area B indicate a partial area of the first filter element 101 captured in the image data on the side closer to the illumination unit 220. In the example of each image data of FIGS.
  • the first filter element 101 is captured at both ends in the longitudinal direction of the second filter element 102, and the processor 262 is included in the image region corresponding to one of them.
  • a partial area on the side close to the illumination unit 220 is set in the image area A, and a partial area on the side close to the illumination unit 220 in the image area corresponding to the other is set in the image area B.
  • image pickup-related data and the like regarding the transfer speed of the transfer device 280 and the image pickup timing of the image pickup unit 240 are stored in advance in the memory 264.
  • the processor 262 can set appropriate image areas A and B so as to correspond to the position of the first filter element 101 in the acquired image data.
  • the image areas A and B are rectangular, but may have other shapes.
  • the processor 262 of the image processing unit 260 binarizes each pixel in the image area A and the image area B.
  • the processor 262 defines a pixel having a brightness equal to or higher than a predetermined threshold as a bright pixel (for example, a white pixel) and a pixel having a brightness lower than the predetermined threshold as a dark pixel (for example, a black pixel).
  • the predetermined threshold values used in the binarization process are the first filter element 101 (see FIGS. 1A and 3A) arranged in the correct orientation and the first filter element 101 (see FIG. 1A and FIG. 3A) that are not arranged in the correct orientation. 1B, FIG. 1C, FIG. 3B, and FIG. 3C) can be set to an appropriate value so as to be appropriately discriminated.
  • 6A, 6B, 6C show an example of the binarization process in step 504.
  • 6A, 6B, and 6C show images before and after the binarization process for the image areas A and B shown in FIGS. 3A, 3B, and 3C, respectively.
  • the image regions A and B before the binarization process have relatively high brightness as a whole as described above with respect to FIG. 3A, but the brightness gradually increases from the upper end to the lower end of the region. Is declining. Therefore, by the binarization process using an appropriate threshold value, in both the image areas A and B, as shown in FIG. 6A, approximately the upper half of the areas A and B is converted into a white pixel area, and approximately the lower half is converted into a white pixel area. Converted to black pixel area.
  • the image area B on the right side is binarized in the same manner as the image areas A and B of FIG. 6A.
  • the image area A on the left side before the binarization process is a dim area as a whole as described above with respect to FIG. 3B, it is shown in FIG. 6B by the binarization process using the same threshold value as in FIG. 6A.
  • the entire area A is converted into a black pixel area.
  • the image area B on the right side is binarized in the same manner as the image areas A and B of FIG. 6A.
  • the image region A on the left side before the binarization process includes a dim semicircular region corresponding to the bottom surface of the cylinder as described above with respect to FIG. 3C. Therefore, this semicircular portion of the image area A is converted into a black pixel area as shown in FIG. 6C by the binarization process using the same threshold value as in FIG. 6A.
  • the portion of the image region A excluding the semicircular portion is a portion corresponding to the background as described above, and is converted into a white pixel region or a black pixel region according to the brightness of the background. Note that FIG. 6C shows a case where the background portion is converted into white pixels.
  • the processor 262 of the image processing unit 260 calculates the total area (that is, the total number of bright pixels or dark pixels) of the bright pixels (or dark pixels) in the binarized image area A and the image area B. do. For example, assuming that the total area of the image area A and the total area of the image area B are 100, respectively, in the example of FIG. 6A, the total area of the white pixels in the image area A and the total area of the white pixels in the image area B are both. It is 50. Further, in the example of FIG. 6B, the total area of white pixels in the image area B is 50, which is the same as in the case of FIG. 6A, but the total area of white pixels in the image area A is 0. Further, in the example of FIG. 6C, the total area of white pixels in the image area B is 50, which is the same as in the case of FIG. 6A, but the total area of white pixels in the image area A is 20.
  • the processor 262 of the image processing unit 260 determines whether or not the orientation of the arrangement of the first filter element 101 is appropriate based on the calculated total area of bright pixels (or dark pixels). ..
  • the determination threshold value can be set to "40". In this case, in the example of FIG. 6A, since the total area of the white pixels in both the image areas A and B is larger than the determination threshold value, it is determined that the orientation of the arrangement of the first filter element 101 included in the unit 103 is normal. Can be done (step 510). Further, in the examples of FIGS. 6B and 6C, since the total area of the white pixels in the image area A is smaller than the determination threshold value, it can be determined that the orientation of the arrangement of the first filter element 101 included in the unit 103 is abnormal. Yes (step 512).
  • the total area of black pixels may be used for the determination in step 508.
  • the predetermined determination threshold value which may be different from the determination threshold value in the case of white pixels
  • it is determined that the orientation of the arrangement of the first filter element 101 is normal step. 510) If the total area of the black pixels is larger than the determination threshold value, it can be determined that the orientation of the arrangement of the first filter element 101 is abnormal (step 512).
  • step 512 When it is determined in step 512 that the orientation of the first filter element 101 is abnormal as described above, the packaging process is temporarily stopped before the first filter element 101 and the second filter element 102 are wrapped with the molding paper. You may take measures such as doing so. As a result, it is possible to prevent the occurrence of defects in the packaging process and the production of defective filters.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Image Analysis (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Image Processing (AREA)

Abstract

La présente invention détecte une direction anormale d'agencement d'éléments filtrants (101, 102) dans une phase avant que les éléments filtrants ne soient emballés avec du papier de moulage. L'invention concerne un procédé d'inspection pour une tige de filtre conçue par emballage, avec du papier de moulage, d'une pluralité d'éléments filtrants cylindriques agencés le long de la direction d'axe du cylindre, le procédé comprenant les étapes consistant à : (402) irradier, dans une première direction, une pluralité d'éléments filtrants agencés le long de la direction d'axe avant d'emballer la pluralité d'éléments filtrants avec du papier de moulage ; (404) capturer, dans une seconde direction, une image de la pluralité d'éléments filtrants irradiés dans la première direction pour générer des données d'image ; définir, dans les données d'image, une région d'image correspondant à la position d'un élément filtrant donné ; et (406) déterminer si l'agencement de l'élément filtrant donné est satisfaisant ou non satisfaisant sur la base de la taille d'une région claire ou de la taille d'une région sombre dans la région d'image.
PCT/JP2020/002724 2020-01-27 2020-01-27 Procédé d'inspection et appareil d'inspection pour filtre pour article à fumer WO2021152653A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL439641A PL439641A1 (pl) 2020-01-27 2020-01-27 Sposób kontroli i urządzenie kontrolne dla filtra do artykułu tytoniowego
JP2021519181A JP6921366B1 (ja) 2020-01-27 2020-01-27 喫煙物品用フィルターの検査方法及び検査装置
PCT/JP2020/002724 WO2021152653A1 (fr) 2020-01-27 2020-01-27 Procédé d'inspection et appareil d'inspection pour filtre pour article à fumer
DE112020002035.5T DE112020002035B4 (de) 2020-01-27 2020-01-27 Prüfverfahren und Prüfvorrichtung für Filter für Rauchartikel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/002724 WO2021152653A1 (fr) 2020-01-27 2020-01-27 Procédé d'inspection et appareil d'inspection pour filtre pour article à fumer

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WO2021152653A1 true WO2021152653A1 (fr) 2021-08-05

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JP (1) JP6921366B1 (fr)
DE (1) DE112020002035B4 (fr)
PL (1) PL439641A1 (fr)
WO (1) WO2021152653A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007089583A (ja) * 2005-09-28 2007-04-12 Hauni Maschinenbau Ag 多重セグメントフィルター、またはフィルターセグメントの構成体の特性を測定するための装置、および方法
JP2016515828A (ja) * 2013-04-08 2016-06-02 インターナショナル トバコ マシーネリー ポーランド エスピー．ゼット オー．オー． タバコ産業で使用される機械の中を転送されるマルチセグメントロッド内の回転したセグメントの検出方法及び装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007089583A (ja) * 2005-09-28 2007-04-12 Hauni Maschinenbau Ag 多重セグメントフィルター、またはフィルターセグメントの構成体の特性を測定するための装置、および方法
JP2016515828A (ja) * 2013-04-08 2016-06-02 インターナショナル トバコ マシーネリー ポーランド エスピー．ゼット オー．オー． タバコ産業で使用される機械の中を転送されるマルチセグメントロッド内の回転したセグメントの検出方法及び装置

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JPWO2021152653A1 (fr) 2021-08-05
DE112020002035B4 (de) 2022-10-06
JP6921366B1 (ja) 2021-08-18
PL439641A1 (pl) 2022-04-25
DE112020002035T5 (de) 2022-01-13

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