WO2013111834A1 - Procédé d'identification de cellules étanches d'un filtre en nid d'abeilles, procédé de fabrication, dispositif d'identification de cellules étanches, dispositif de fabrication, programme et moyen d'enregistrement associés - Google Patents

Procédé d'identification de cellules étanches d'un filtre en nid d'abeilles, procédé de fabrication, dispositif d'identification de cellules étanches, dispositif de fabrication, programme et moyen d'enregistrement associés Download PDF

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Publication number
WO2013111834A1
WO2013111834A1 PCT/JP2013/051505 JP2013051505W WO2013111834A1 WO 2013111834 A1 WO2013111834 A1 WO 2013111834A1 JP 2013051505 W JP2013051505 W JP 2013051505W WO 2013111834 A1 WO2013111834 A1 WO 2013111834A1
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WO
WIPO (PCT)
Prior art keywords
cell
end surface
sealed
sealing
surface side
Prior art date
Application number
PCT/JP2013/051505
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English (en)
Japanese (ja)
Inventor
宏昭 岡野
博 鬼塚
有司 泉野
昌宏 清川
哲哉 北野
Original Assignee
株式会社クボタ
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Publication of WO2013111834A1 publication Critical patent/WO2013111834A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects
    • G01N21/95692—Patterns showing hole parts, e.g. honeycomb filtering structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G06T7/0006—Industrial image inspection using a design-rule based approach
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/60—Analysis of geometric attributes
    • G06T7/66—Analysis of geometric attributes of image moments or centre of gravity
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention has a configuration in which a number of cells extending in a predetermined direction are provided, and the open cells whose ends are opened and the closed cells whose ends are sealed are alternately arranged on both end faces in the extending direction.
  • the present invention relates to a technique for specifying a cell whose end is sealed when a honeycomb filter having the above is manufactured.
  • a honeycomb filter having a number of cells extending in a predetermined direction is used as a filter for capturing solid fine particles contained in exhaust gas of an internal combustion engine or the like.
  • This type of honeycomb filter is generally formed of a porous material, and each cell is open at one end in the extending direction and sealed (sealed) at the other end. Moreover, each cell is arrange
  • a film is attached to the end face of the honeycomb filter in which all the cells are opened, and holes (sealing holes) are formed at positions corresponding to the sealing cells in the film with a laser or the like.
  • a method is used in which the end of the cell is sealed by opening an agent injection hole) and injecting the sealing agent into the end of the cell through the sealant injection hole.
  • the aperture position (the location of the aperture cells) with respect to the film is accurately and efficiently specified. There is a need to. Further, even when the shape of the hole of each cell at the end of the honeycomb filter is deformed or the arrangement of each cell is distorted, it is necessary to specify the position of the hole for the film with high accuracy. is there.
  • Patent Document 1 As a technique for selecting a cell to be sealed, the direction of a cell partition wall adjacent to the cell opening hole is detected with reference to a predetermined cell opening hole, and the detected cell is detected.
  • a technique for extracting a cell opening hole to be identified as a plugging hole or a plugging unnecessary hole based on a partition wall is described.
  • Patent Document 1 has a problem that it takes time to detect the cell partition wall and a problem that it is difficult to accurately detect the direction of the cell partition wall.
  • the direction of the cell partition wall varies depending on the installation position of the honeycomb filter, it is not easy to accurately detect the direction of the cell partition wall.
  • the shape of the opening of each cell may not be an accurate rectangular shape due to deformation of the peripheral part of the workpiece or the cell partition wall. It becomes difficult to accurately detect the direction of the wall.
  • the present invention has been made in view of the above problems, and its purpose is to easily position the sealed cells in the manufacturing process of the honeycomb filter in which the sealed cells and the opened cells are alternately arranged. It is to set appropriately.
  • a sealed cell specifying method in a honeycomb body in which a plurality of cells extending in a predetermined direction are arranged adjacent to each other via a cell partition wall, and each of the cells penetrates in the extending direction.
  • a method for identifying a sealed cell for identifying a cell that seals the cell end when the cell end of some cells is sealed to produce a honeycomb filter, the extending direction of the honeycomb body
  • One of the cells whose center of gravity is within a predetermined distance between the center of gravity calculation step and the one end surface side open cell for opening the end portion on the one end surface side, and the other is sealed on the end portion on the one end surface side.
  • One end side sealing cell to be perforated It is characterized in that it comprises a first sealing cell specific step of setting Te.
  • the position of the sealed cell can be specified based on the center of gravity position of each cell. There is no need to detect, and the open cell and the sealed cell can be set easily and appropriately.
  • FIG. 1 It is a block diagram which shows the structure of the manufacturing apparatus (sealed cell identification device) concerning one Embodiment of this invention.
  • (A)-(c) is explanatory drawing which showed typically arrangement
  • FIG. 1 It is a flowchart which shows the flow of the sealing process performed using the manufacturing apparatus shown in FIG.
  • (A) is explanatory drawing which shows the example of the determination reference
  • (b) is explanatory drawing which shows the example of the determination object cell extracted in the process of FIG. It is explanatory drawing which shows the modification of the cell shape in the honey-comb filter in which a sealing process is performed by the manufacturing apparatus shown in FIG. It is explanatory drawing which shows the modification of the cell shape in the honey-comb filter in which a sealing process is performed by the manufacturing apparatus shown in FIG.
  • FIG. 1 is a block diagram showing a configuration of a manufacturing apparatus (sealed cell specifying device) 1 according to the present embodiment.
  • FIGS. 2 (a) to 2 (c) show respective components in the manufacturing apparatus (sealed cell specifying device) 1.
  • the manufacturing apparatus 1 includes an upper illumination device 11, a lower illumination device 12, an imaging device 13, a punching device 14, a control unit 15, and a storage unit 16.
  • the control unit 15 includes an illumination control unit 21, an imaging control unit 22, a perforation control unit 23, and a sealing position specifying unit 24.
  • the sealing position specifying unit 24 includes a binarization processing unit 31, an A side analysis unit (first sealing position specifying unit) 32, and a B side analysis unit (second sealing position specifying unit) 33. Yes.
  • the upper illumination device 11 is located above the honeycomb filter (work) W held in a predetermined position by a holding means (not shown) provided in the manufacturing apparatus 1. It arrange
  • the position is not particularly limited as long as the upper surface of the honeycomb filter W can be illuminated substantially uniformly.
  • the lower illumination device 12 is disposed below the honeycomb filter W held at a predetermined position by the holding means, and irradiates the lower surface of the honeycomb filter W with light. .
  • the honeycomb filter W is held by the holding means so that the cell extending direction is in the vertical direction, and the lower illumination device 12 emits light in a direction substantially parallel to the cell extending direction to the lower surface of the honeycomb filter W. It comes to irradiate.
  • the imaging device 13 is disposed vertically above the honeycomb filter W held at a predetermined position by the holding means, and images the upper surface of the honeycomb filter W.
  • a CMOS (complementary (mental) oxide (semiconductor) device) image sensor, a CCD (charge-coupled device) image sensor, etc. can be used, for example.
  • an imaging device having a resolution of 2048 pixels ⁇ 2048 pixels is used.
  • the perforating device 14 is a device that opens holes (sealing agent injection holes) at positions corresponding to the sealing cells in the film (mask) attached to the end face of the honeycomb filter W.
  • the configuration of the punching device 14 is not particularly limited as long as it can make a hole corresponding to the size of the sealing cell at a predetermined position in the film.
  • the laser beam is irradiated.
  • a perforation apparatus having a configuration for making holes in the film was used.
  • the control unit 15 has a function of controlling the operation of each unit provided in the manufacturing apparatus 1 and a function of specifying the position of the sealed cell in the honeycomb filter W based on the imaging result of the honeycomb filter W by the imaging device 13. Yes.
  • control unit 15 includes an illumination control unit 21 that controls on / off of the upper illumination device 11 and the lower illumination device 12, an imaging control unit 22 that controls the operation of the imaging device 13, and the punching device 14.
  • a perforation control unit 23 that controls the operation and a sealing position specifying unit 24 that specifies the position of the sealing cell in the honeycomb filter W based on the imaging result of the honeycomb filter W by the imaging device 13 are provided.
  • the sealing position specifying unit 24 binarizes the image data captured by the imaging device 13 to generate binarized image data, and one end face (end face A) of the honeycomb filter W. ) And the imaging result of the other end face (end face B) of the honeycomb filter W, and the position of the sealing cell (one end face side sealed cell) on the end face A is specified. And a B-surface analysis unit 33 that analyzes and identifies the position of the sealing cell (the other-end-side sealing cell) on the end surface B. Details of these parts will be described later.
  • the control unit 15 includes an arithmetic processing unit such as a CPU (Central Processing Unit) and a dedicated processor, and a storage unit such as a RAM (Random Access Memory), a ROM (Read Only Memory,), and an HDD (Hard Disc Drive). (None of which are shown) and the like.
  • the control unit 15 implements each function described above by reading and executing various information stored in the storage unit and a program for performing various controls.
  • the control unit 15 is not limited to that realized by using software, and may be configured by, for example, hardware logic, and hardware that performs a part of the processing and the hardware. It may be a combination of arithmetic means for executing software for performing control and remaining processing.
  • FIG. 3 is a flowchart showing the flow of the sealing process.
  • the honeycomb filter W is held by a holding means (not shown) of the manufacturing apparatus 1 so that one surface (A surface) in the cell extending direction faces upward ( S1)
  • a film serving as a mask for injecting the sealing material is attached to the A surface (S2).
  • the honeycomb filter W may be held by the holding means after the film is attached to the honeycomb filter W.
  • the film is not particularly limited as long as it is a material that can shield the sealing material and transmit the light irradiated from the upper illumination device 11, and various conventionally known film materials may be used. Can do.
  • a film made of PET polyethylene terephthalate
  • the control unit 15 images the A surface of the honeycomb filter W on the imaging device 13 in a state where the upper illumination device 11 illuminates the upper surface (A surface) of the honeycomb filter W. Then, the imaging data (first imaging data) of the A surface is acquired (S3, first imaging process). And the A surface sealing position specifying process which specifies the position of the A surface side sealing cell (one end surface side sealing cell) which seals the edge part of A surface side based on this A surface imaging data is performed ( S4). Details of the A-side sealing position specifying process will be described later.
  • the control unit 15 controls the punching device 14 to inject a sealing material into the position corresponding to the sealing cell specified in S4 in the film attached to the A surface (sealing material injection hole). ) Is perforated (S5). Thereafter, the sealing material is injected into the sealing material injection hole (S6), the injected sealing material is dried (S6), and the film is removed (S7). Thereby, the sealing process with respect to the A surface side sealing cell is completed.
  • the method for curing or fixing the sealing material injected into the sealing material injection hole is not limited to the method for drying the sealing material, and other methods may be used. For example, the sealing material may be cured or fixed by firing.
  • the process of removing the film is not limited to this stage, and may be performed at an arbitrary timing after the sealing material is injected into the sealing material injection hole. For example, it may be after the B surface is sealed.
  • an injection device (not shown) for injecting the sealing material may be provided, and the controller 15 may perform the injection processing of the sealing material by controlling the operation of the injection device.
  • the material injection process may be performed manually.
  • the sealing material is not particularly limited, and various conventionally known sealing materials can be used, for example.
  • the honeycomb filter W is held by the holding means of the manufacturing apparatus 1 so that the other surface (B surface) in the cell stretching direction faces upward (S9).
  • a film serving as a mask for injecting the sealing material onto the B surface is pasted (S10).
  • a film may be attached to the B surface of the honeycomb filter W and then held by the holding means.
  • the film is not particularly limited as long as it is a material capable of shielding the sealing material and transmitting light emitted from the lower illumination device 12, and conventionally known various film materials are used. be able to.
  • a PET film was used, similar to the film used during the sealing treatment for the A surface.
  • the control unit 15 (1) illuminates the upper surface (B surface) of the honeycomb filter W with the upper illumination device 11 and turns off the lower illumination device 12 (see FIG. 2A).
  • the device 13 images the B surface of the honeycomb filter W (third imaging step) to acquire imaging data (third imaging data) of the B surface at the time of upper surface illumination, and (2) turns off the upper illumination device 11 and lowers it.
  • the B surface of the honeycomb filter W is imaged (second imaging step) in a state where the lower surface (A surface) of the honeycomb filter W is illuminated by the illumination device 12 ((b) in FIG. 2).
  • Data (second imaging data) is acquired (S11).
  • the order of the acquisition process of the imaging data of the B surface at the time of the upper surface illumination and the acquisition process of the imaging data of the B surface at the time of the lower surface illumination are not particularly limited, and either may be first.
  • the honeycomb filter W is held at a fixed holding position by the holding unit, and the imaging device 13 is fixed so that the relative position with respect to the honeycomb filter W does not change.
  • the imaging conditions by the imaging device 13 are set to the same conditions except that the illumination state is different.
  • B surface side sealing cell (other end surface side sealing cell) which seals the edge part of the B surface side based on these B surface imaging data (imaging data at the time of upper surface illumination and imaging data at the time of lower surface illumination)
  • B surface sealing position specifying processing for specifying the position of () is performed (S12). Details of the B-side sealing position specifying process will be described later. Note that automatic recognition processing of the A side and the B side can also be performed by using imaging data at the time of bottom illumination.
  • the control unit 15 controls the perforating device 14 to inject a sealing material into the position corresponding to the sealing cell specified in S12 in the film attached to the B surface (sealing material injection hole). ) Is perforated (S13). Thereafter, the sealing material is injected into the sealing material injection hole (S14), the injected sealing material is dried (S15), and the film is removed (S16). Thereby, the sealing process with respect to a B surface side sealing cell is completed.
  • the method of curing or fixing the sealing material injected into the sealing material injection hole is not limited to the method of drying the sealing material, and other methods are used. May be.
  • the sealing material may be cured or fixed by firing.
  • the process of removing the film is not limited to this stage, and may be performed at an arbitrary timing after the sealing material is injected into the sealing material injection hole. For example, it may be after the B surface is sealed.
  • the sealing material injection process may be performed using an injection device or manually.
  • the sealing material is not particularly limited, and various conventionally known sealing materials can be used, for example.
  • FIG. 4 is a block diagram showing in more detail the configuration of the sealing position specifying unit 24 provided in the control unit 15.
  • FIG. 5 is a flowchart showing the flow of the A-side sealing position specifying process.
  • the sealing position specifying unit 24 includes a binarization processing unit 31, an A surface analysis unit 32, and a B surface analysis unit 33.
  • the A plane analysis unit 32 includes an A plane cell candidate extraction unit 41, an A plane effective cell extraction unit 42, an A plane cell data generation unit 43, and an A plane sealing position specifying unit 44.
  • the B surface analysis unit 33 includes a B surface cell candidate extraction unit 51, a B surface effective cell extraction unit 52, a B surface cell data generation unit 53, an A surface opening position detection unit 54, and a B surface sealing position specifying unit. 55.
  • the binarization processing unit 31 uses the A plane imaging data acquired in S3 (imaging data acquired by imaging the A plane in a state where the A plane is illuminated by the upper illumination device 11) with a binary luminance value.
  • the image is binarized according to whether it is equal to or greater than the binarization threshold value lv1, and binarized image data is generated (S21).
  • FIG. 6 is a graph showing an example of the number of pixels for each luminance value in the A-plane imaging data.
  • the luminance value of the cell partition wall portion becomes high.
  • the background portion made of a color or material having a high reflectance around the honeycomb filter W
  • the luminance value is increased by the light from the upper illumination device 11.
  • the luminance value of the cell portion in the A-plane imaging data is lower than the cell partition wall portion and the background portion. For this reason, as shown in FIG.
  • the binarization processing unit 31 sets the binarization threshold value lv1 to an intermediate luminance value between these two peaks, and determines whether the luminance value of each pixel is equal to or higher than the binarization threshold value lv1.
  • the binarization threshold value lv1 may be set in advance so that the cell portion and other portions (cell partition wall and background portion) can be appropriately identified, for example, by performing an experiment in advance. .
  • the A-plane cell candidate extraction unit 41 has a pixel value 0 in the binarized image data generated in S21 (a pixel whose gradation value is less than the binarization threshold lv1 in the imaging data before binarization). For each region in which the number of pixels continues, the number of pixels (area) of each region is calculated, a region whose pixel number is within a predetermined range is defined as a cell candidate, and a region whose pixel number is outside the predetermined range is excluded from the cell candidate A candidate extraction process is performed (S22).
  • FIG. 7 is an explanatory diagram showing an outline of the cell candidate extraction process.
  • the cell candidate extraction process a feature that the opening area (number of pixels) of each cell is substantially constant is used, and an area where the number of pixels is outside a predetermined range is excluded from the cell candidates.
  • FIG. 7 is an explanatory diagram showing an outline of the cell candidate extraction process.
  • the lower limit value (cell candidate area lower limit value) sz1 of the number of pixels determined as a cell candidate is set to 50
  • the upper limit value (cell candidate area upper limit value) sz2 of the pixel number determined as a cell candidate is set. 110. That is, an area having 50 to 110 pixels is set as a cell candidate, and an area having less than 50 pixels and an area having more than 110 pixels are set as noise components other than cells.
  • the upper limit value and the lower limit value of the number of pixels in the region to be extracted as a cell candidate are not limited to this, and may be appropriately determined according to various conditions such as the size of the honeycomb filter W, the size of each cell, and the resolution of the imaging device 13, for example. You only have to set it.
  • each cell in the honeycomb filter W according to the present embodiment has a square shape in which the shape of the opening is 1.4 mm ⁇ 1.4 mm.
  • the shape and size of each cell are not limited to this.
  • the A-plane effective cell extraction unit 42 extracts, from the cell candidates extracted in S22, cell candidates whose area ratio with respect to a preset reference area sz3 of the cell is a predetermined area threshold value lv2 or more as effective cells.
  • the effective cell extraction process is performed (S23).
  • the area threshold value lv2 is set to 60% of the reference area sz3.
  • the value of the area threshold value lv2 is not limited to this, and may be appropriately set according to various conditions such as the size of the honeycomb filter W, the size of each cell, the resolution of the imaging device 13, and the like.
  • the A-plane cell data generation unit 43 calculates the centroid (coordinates in the coordinate system of the A-plane imaging data) of each effective cell extracted in S23 (first centroid calculation step), and sets each effective cell to the centroid.
  • Cell data arranged in the order corresponding to the coordinates is generated (S24).
  • FIG. 8A is an explanatory diagram schematically showing an example of each effective cell and the center of gravity position of each effective cell in the A-plane imaging data
  • FIG. 8B is shown in FIG. It is explanatory drawing which shows a part of cell data produced
  • the A-plane cell data generation unit 43 sorts the barycentric coordinates of each effective cell in the x-axis direction in order from the position where the coordinate value of the y-axis is small, and each valid cell is detected in the order in which the barycentric coordinates are detected.
  • a cell number is assigned to each cell, and a list in which the cell number, barycentric coordinates (x, y), and the number of pixels are arranged in the order of the cell number is generated as cell data.
  • the A-side cell data generation unit 43 creates an opening / sealing flag indicating whether each effective cell is an opening cell or a sealing cell, and an opening for the cell data generated in S24. Whether the cell is a cell that has already undergone the determination process (decision process) to determine whether it is a hole cell or a sealed cell (processed cell), is a cell that is being executed (cell that is being processed), or has not yet been performed.
  • a flag addition process for adding a process status flag indicating whether the cell is an unprocessed cell S25.
  • C of FIG. 8 is explanatory drawing which shows a part of cell data after a flag addition process. In the initial state, the opening / sealing flag of each effective cell is set to a value indicating that it is an open cell, and the processing state flag of each effective cell indicates that the determination process is not performed. Set to a value.
  • the A-side sealing position specifying unit 44 selects a reference cell that is a target cell for determining (determining) whether the cell is an open cell or a sealed cell from the valid cells included in the cell data. (S26, 1st sealing cell specific process).
  • the reference cell is selected for the first time, the valid cell having the smallest cell number is selected as the reference cell.
  • the valid cell having the smallest cell number is selected as the reference cell among the valid cells whose processing status flag is being processed.
  • the A-side sealing position specifying unit 44 calculates the distance between the center of gravity of the reference cell and the center of gravity of each effective cell, and sets the effective cell within the predetermined distance (search range) ra1 as a candidate cell. Extract (S27, first sealed cell identification step).
  • the predetermined distance ra1 is a maximum of eight adjacent to the reference cell in the row direction, the column direction, and the diagonal direction (direction inclined with respect to the row direction and the column direction) of the matrix formed by each effective cell.
  • the centroid of the valid cell and the centroid of the reference cell that are adjacent to each other in the row and column directions Is included in the predetermined distance ra1, while the distance between the center of gravity of the effective cell adjacent in the diagonal direction and the reference cell is not included in the predetermined distance ra1. That is, the predetermined distance ra1 is equal to or greater than the distance between the centers of gravity of cells adjacent in the row direction and the column direction of the matrix formed by each effective cell, and is adjacent to the direction inclined with respect to the row direction and the column direction. It is set to be less than the distance between the centroids.
  • FIG. 9A the A-side sealing position specifying unit 44 is ⁇ ra1 in the x-axis direction and y-axis direction with respect to the reference cell e in the coordinate system of the imaging data.
  • the valid cells existing in the range of the rectangular shape of ⁇ ra1 are extracted as temporary candidate cells.
  • the predetermined distance ra1 is set to 120 (120 pixels).
  • eight effective cells a to d and f to i are adjacent around the reference cell e, and among these, the effective cells b, d, f, and h. Is adjacent to the reference cell in the x-axis direction or the y-axis direction, and the effective cells a, c, g, i are adjacent to the reference cell in a direction inclined by 45 degrees from the x-axis direction and the y-axis direction. ing.
  • the distance between the center of gravity of the reference cell e and the center of gravity of the effective cells b, d, f, h is 100 (100 pixels), and the center of gravity of the reference cell e and the center of gravity of the effective cells a, c, g, i Are 141 (141 pixels). Therefore, in the example of FIG. 9A, since the effective cells a to i are included in the above rectangular range, these effective cells a to i are extracted as temporary candidate cells.
  • the A-side sealing position specifying unit 44 calculates the distance between the centroid of each extracted temporary candidate cell and the centroid of the reference cell, and the calculated distance is A temporary candidate cell longer than the predetermined distance ra1 is excluded from the candidate cells. Therefore, in the example of FIG. 9B, effective cells b, d, f, h whose distance between the centroids with the reference cell is equal to or less than the predetermined distance ra1 are extracted as candidate cells, and between the centroids with the reference cell. Effective cells a, c, g, i whose distance is longer than the predetermined distance ra1 are excluded from candidate cells.
  • the row direction and the column direction of the matrix constituted by each effective cell are the x-axis direction and the coordinate system of the imaging data. Even when it is rotated by 45 ° with respect to the y-axis direction), an effective cell whose distance from the center of gravity to the center of the reference cell is within the predetermined distance ra1 can be extracted as a candidate cell.
  • an effective cell that is within a rectangular range of ⁇ ra1 in the x-axis direction and ⁇ ra1 in the y-axis direction with respect to the reference cell e is extracted as a candidate cell, and the center of gravity of the extracted candidate cell with the reference cell is extracted. Since it is not necessary to calculate the distance between the centroids of all the effective cells and the reference cell by calculating the distance between them and extracting candidate cells whose calculated distance is equal to or less than the predetermined distance ra1, the time required for processing Can be shortened.
  • the effective cells finally extracted as candidate cells are effective cells adjacent to the reference cell in the row direction and the column direction of the matrix formed by each effective cell, at least one, and at most four Extracted.
  • the A-side sealing position specifying unit 44 notifies the operator of the manufacturing apparatus 1 of an abnormality and performs processing. May be interrupted.
  • the A-side sealing position specifying unit 44 extracts a cell whose processing state flag is unprocessed from the candidate cells extracted in S27 as a target cell (S28, first sealing cell specifying step).
  • the A-side sealing position specifying unit 44 updates the flags of the reference cell and the target cell (S29, first sealing cell specifying step). Specifically, for the reference cell, the opening / sealing flag is maintained as it is without being changed, and the processing state flag is updated to “processed”. For the target cell, the opening / sealing flag is updated to a value opposite to that of the reference cell, and the processing state flag is updated during processing. For example, as shown in FIG. 10A, when the reference cell is cell A and the target cells are cells B and E, as shown in FIG. The opening / sealing flag is maintained as the same opening as before the update, and the processing state flag is updated to the processed state.
  • the opening / sealing flag is updated to a sealing opposite to the reference cell, and the processing state flag is updated during processing.
  • specification part 44 may notify an abnormality with respect to the operator of the manufacturing apparatus 1, and you may make it interrupt a process.
  • the A-side sealing position specifying unit 44 determines whether or not the processing status flags of all valid cells in the cell data have been processed (S30, first sealing cell specifying process). If valid cells that have not been processed in the processing status flag remain, the process returns to S26 to select the next reference cell, and the processes of S27 to S30 are performed based on the selected reference cell.
  • the valid cell having the smallest cell number is selected as the reference cell among the valid cells whose processing status flag is being processed. Therefore, for example, as shown in FIGS. 10 (a) and 10 (b), when the process of S27 to S30 is performed using the cell A as a reference cell and the process returns to S26, the process shown in FIG. As shown in FIG. 10B, the cell B having the smaller cell number is selected as the next reference cell among the cells B and E whose processing state flags are set during processing. Then, as shown in FIG. 11B, the above-described processes of S27 to S30 are performed using the cell B as a reference.
  • the A-side sealing position specifying unit 44 determines the position of each sealing cell (each A-side sealing cell) on the A-side.
  • the A-side sealing position specifying information which is information for specifying, is generated and stored in the storage unit 16 (S31), and the process proceeds to S5 shown in FIG.
  • S30 when there is no cell being processed even though a cell whose processing state flag is unprocessed remains, the A-side sealing position specifying unit 44 is abnormal for the operator of the manufacturing apparatus 1. Notification may be made and processing may be interrupted.
  • the punching control unit 23 specifies the sealing position (the punching position and the punching range) for the A surface based on the A surface sealing position specifying information stored in the storage unit 16, and punches. Process.
  • FIG. 4 is a block diagram showing in detail the configuration of the sealing position specifying unit 24 provided in the control unit 15.
  • FIG. 12 is a flowchart showing the flow of the B-side sealing position specifying process.
  • the binarization processing unit 31 obtains the imaging data (upper image data acquired by imaging the B surface with the upper illumination device 11 illuminating the B surface) acquired in S11 when the upper surface of the B surface is illuminated. Binarization is performed according to whether the value is equal to or greater than a predetermined binarization threshold value lv1, and binarized image data is generated (S41).
  • the B-side cell candidate extraction unit 51 sets the number of pixels (area) of each region for each region in which the pixels having the pixel value 0 in the binarized image data generated in S41 are continuous, as in the process of S22.
  • a cell candidate extraction process is performed in which a region where the number of pixels is within the predetermined range is set as a cell candidate, and a region where the number of pixels is outside the predetermined range is excluded from the cell candidates (S42).
  • the B-side effective cell extraction unit 52 extracts, from the cell candidates extracted in S42, cell candidates whose area ratio with respect to a predetermined cell reference area sz3 is a predetermined area threshold lv2 or more as effective cells.
  • the effective cell extraction process is performed (S43).
  • the B-plane cell data generation unit 53 calculates the centroid (centroid coordinate) of each effective cell extracted in S43 (third centroid calculation step), and arranges each effective cell in the order corresponding to the centroid coordinate.
  • Cell data is generated (S44). Specifically, the B-plane cell data generation unit 53 sorts the center-of-gravity coordinates of each valid cell in the x-axis direction in order from the position where the coordinate value of the y-axis is small, and each valid cell is detected in the order in which the center-of-gravity coordinates are detected.
  • a cell number is assigned to each cell, and a list in which the cell number, barycentric coordinates (x, y), and the number of pixels are arranged in the order of the cell number is generated as cell data.
  • the B-side cell data generation unit 53 creates an opening / sealing flag indicating whether each effective cell is an opening cell or a sealing cell, and an opening for the cell data generated in S44. Whether the cell is a hole cell or a sealed cell, whether it is a cell that has already been processed (a cell that has been processed), a cell that is being performed (a cell that is being processed), or a cell that has not been A flag addition process for adding a process status flag indicating whether the cell is a process cell) is performed (S45).
  • the B-side sealing position specifying unit 55 selects a reference cell that is a target cell for determining (determining) whether the cell is an open cell or a sealed cell from the valid cells included in the cell data. (S46, sealed cell temporary setting step).
  • the reference cell is selected for the first time, the valid cell having the smallest cell number is selected as the reference cell.
  • the valid cell having the smallest cell number is selected as the reference cell among the valid cells whose processing status flag is being processed.
  • the B-side sealing position specifying unit 55 calculates the distance between the center of gravity of the reference cell and the center of gravity of each effective cell, and sets the effective cell within the predetermined distance (search range) ra1 as a candidate cell. Extract (S47, sealed cell temporary setting step).
  • the B-side sealing position specifying unit 55 extracts a cell whose processing state flag is unprocessed from the candidate cells extracted in S47 as a target cell (S48, sealed cell temporary setting step).
  • the B-side sealing position specifying unit 55 updates the flags of the reference cell and the target cell (S49, sealed cell temporary setting step). Specifically, for the reference cell, the opening / sealing flag is maintained as it is without being changed, and the processing state flag is updated to “processed”. For the target cell, the opening / sealing flag is updated to a value opposite to that of the reference cell, and the processing state flag is updated during processing.
  • the B-side sealing position specifying unit 55 determines whether or not the processing status flags of all valid cells in the cell data have been processed (S50, sealed cell temporary setting step). If valid cells that have not been processed in the processing status flag remain, the process returns to S46 to select the next reference cell, and the processing of S47 to S50 is performed based on the selected reference cell. Note that the processing of S41 to S50 described above is the processing of S21 to S30 in the A-side sealing position specifying process shown in FIG. 5 except that the processing target data is not the A-side imaging data but the B-side imaging data. It is the same as the processing.
  • the cell data generated as described above that is, the B-side sealing position temporary setting information (temporary setting of the B-side sealing position temporarily set) Setting data) is stored in the storage unit 16 (S51).
  • the binarization processing unit 31 captures imaging data at the time of lower illumination of the B surface acquired in S11 (the lower surface (A surface) of the honeycomb filter W is illuminated by the lower illumination device 12 on the upper surface (B surface)).
  • the imaging data acquired by imaging is binarized according to whether the luminance value is equal to or higher than the binarization threshold value lv3, and binarized image data is generated (S52).
  • the light irradiated to the A surface side open cell passes through the cell and from the upper surface (B surface) of the honeycomb filter W.
  • the light is emitted upward.
  • the light irradiated from the lower illumination device 12 to the A-side sealing cell and the cell partition wall portion is shielded by the A-plane and does not reach the B-plane. For this reason, in the imaging data at the time of lower illumination of the B surface, the luminance value is high in the cell corresponding to the A surface side open cell in the B surface, and the cell and cell partition wall corresponding to the A surface side sealed cell The luminance value is low in the portion.
  • the binarization processing unit 31 identifies a cell region corresponding to the A-side open cell, a region corresponding to the A-side sealed cell, and a region corresponding to the cell partition wall on the B surface. Therefore, the imaging data at the time of lower illumination of the B surface is binarized according to whether the luminance value of each pixel is equal to or higher than the binarization threshold value lv3.
  • FIG. 13 is a graph showing an example of the number of pixels for each luminance value in the imaging data when the B surface is under illuminated. As shown in this figure, there are two peaks in the number of pixels in the imaging data when the B surface is under illuminated. Therefore, the binarization processing unit 31 sets the binarization threshold value lv3 to an intermediate luminance value between these two peaks, and determines whether the luminance value of each pixel is equal to or higher than the binarization threshold value lv3.
  • the binarization threshold value lv3 may be set in advance such that, for example, by performing an experiment in advance, a region corresponding to the A-side open cell and other regions can be appropriately identified. .
  • the imaging data at the time of the upper illumination of the B surface and the imaging data at the time of the lower illumination of the B surface are imaged under the same conditions except that the illumination state is different.
  • the honeycomb filter W and the imaging device 13 are fixed at the same position when imaging the imaging data when the B surface is under illumination and when imaging the imaging data when the B surface is under illumination. Therefore, the coordinate system in the imaging data at the time of upper illumination of the B surface and the coordinate system in the imaging data at the time of lower illumination of the B surface are the same. That is, an image at a certain position on the B surface of the honeycomb filter W has the same coordinates as the imaging data when the B surface is illuminated upward and the imaging data when the B surface is illuminated downward.
  • the A-surface aperture position detection unit 54 calculates the center of gravity for each region composed of a set of pixels having the pixel value 1 in the binarized image data generated in S52, that is, for each region corresponding to the A-side aperture cell. Coordinates are calculated (second centroid calculating step), and among these areas, the area from the center coordinates of the honeycomb filter W (in this embodiment, coordinates (1023, 1023)) to the centroid coordinates of the area is the closest ( Cell) is extracted as a determination reference cell (S53, one end face side open cell detection step, determination reference cell selection step).
  • the A-side aperture position detection unit 54 centroid coordinates of each region (each cell corresponding to the A-side aperture cell) composed of a set of pixels with the pixel value 1 in the binarized image data generated in S52.
  • the cell having the shortest distance from the center coordinate of the honeycomb filter W to the center of gravity coordinate of the cell is extracted as a determination reference cell.
  • a cell having the smallest y coordinate value is extracted from the plurality of cells.
  • the cell having the smallest x-coordinate value is extracted from each cell.
  • (A) of FIG. 14 is explanatory drawing which shows the example of the determination reference
  • the center of the honeycomb filter W is used to determine the region.
  • the cell with the shortest distance to the barycentric coordinates is extracted as the determination reference cell, the present invention is not limited to this, and any one of the cells may be extracted by an arbitrary extraction method and used as the determination reference cell.
  • the A-side aperture position detection unit 54 coordinates the barycentric coordinates of the determination reference cell extracted in S53 in the binarized image data obtained by binarizing the imaging data at the time of upper illumination of the B surface (imaging at the time of lower illumination). From the coordinate corresponding to the coordinate in the data) to the centroid coordinate of the effective cell, or from the coordinate corresponding to the determination reference cell to the centroid coordinate of the effective cell. The effective cell having the smallest distance is extracted as the determination target cell (S54, one end face side open cell detection step, determination target cell selection step).
  • FIG. 14B is an explanatory diagram illustrating an example of a determination target cell that is extracted based on imaging data during upper illumination of the B surface.
  • the imaging data for the upper illumination of the B surface and the imaging data for the lower illumination of the B surface are data captured under the same conditions except that the illumination conditions are different, and have a common coordinate system.
  • the predetermined distance ra2 is determined based on the imaging data obtained when the B surface is under illumination out of the cells extracted based on the imaging data obtained when the B surface is illuminated.
  • the cell is set in advance in consideration of the amount of deviation.
  • the predetermined distance ra2 may be set based on the result of an experiment performed in advance.
  • the A-surface aperture position detecting unit 54 manufactures An abnormality notification may be sent to the operator of the apparatus 1 and the processing may be interrupted.
  • the B-side sealing position specifying unit 55 refers to the opening / sealing flag of the determination target cell in the cell data stored in the storage unit 16 in S51, and the opening / sealing flag indicates opening. It is judged whether it is a value (S55, 2nd sealing cell specific process).
  • the B-side sealing position specifying unit 55 adds each cell in the cell data stored in the storage unit 16 in S51 to the cell data.
  • a reversal flag (determination flag) indicating that the perforation / sealing flag is reversed is added (S56), and the perforation / sealing flags of all valid cells in the cell data are reversed (S57, second). Sealing cell identification step).
  • the A-side side open cell (one-end-side side open cell) is the B-side side sealed cell (other-end-side side sealed cell), and the A-side side sealed cell (one-end-side side sealed cell).
  • a hole cell it is set as a B surface side opening cell (other end surface side opening cell).
  • the determination reference cell is a cell corresponding to a region having a high luminance value in the imaging data when the B surface is under illuminated, and is an A surface side open cell.
  • the determination target cell's hole / sealing flag is a value indicating that the cell is an open cell
  • the hole flag is inverted to a value indicating that it is a sealed cell.
  • the opening / sealing flag is also reversed for all valid cells other than the determination target cell on the B side.
  • the opening / sealing flag is inverted to a value indicating that it is a B-side opening cell.
  • the opening / sealing flag is inverted to a value indicating that it is a B-side opening cell.
  • the opening / sealing flag is inverted to a value indicating that it is a B-side opening cell.
  • the opening / sealing flag of the determination target cell is a value indicating that it is a B-side sealing cell in S55
  • the B-side sealing position specifying unit 55 opens each valid cell in the cell data.
  • the hole / sealing flag is maintained as it is without being inverted (second sealed cell specifying step).
  • the B-side sealing position specifying unit 55 generates B-side sealing position specifying information, which is information for specifying the position of each B-side sealing cell, and stores it in the storage unit 16 (S58). The process proceeds to S13 shown in FIG.
  • the punching control unit 23 specifies the sealing position (piercing position and punching range) for the B surface based on the B surface sealing position specifying information stored in the storage unit 16, and punches. Process.
  • the honeycomb in a state where the end faces on both ends of each cell before the A-plane analysis unit 32 seals the ends of each cell are opened.
  • the center of gravity position of each cell on the A surface is calculated based on the imaging data of the A surface obtained by imaging the A surface (one end surface in the extending direction) of the filter W, and the distance between the center of gravity on the A surface is the matrix position.
  • One of the cells that are within a predetermined distance set as the length is an A-side opening cell that opens the end on the A-side, and the other is an A-side sealing that seals the end on the A-side Set as a cell.
  • the position of the A-side sealed cell can be specified based on the center-of-gravity position of each cell in the image data obtained by imaging the A-side, so that the orientation of the cell partition wall is detected as in the conventional technique described above.
  • the opening cell and the sealing cell can be set easily and appropriately.
  • the A-side opening cell and the A-side sealing cell can be easily and It can be set appropriately.
  • the B surface analysis part 33 seals the edge part of the said A surface side sealing cell in A surface, before sealing the edge part of the B surface side. Based on imaging data obtained by imaging the B surface in a state in which light incident on the A surface side aperture cell with respect to the A surface in the honeycomb filter W is emitted from the end of the B surface side of the cell. The position of the A-side opening cell on the B-side is detected, and the cell corresponding to the detected A-side opening cell is set as the B-side sealing cell that seals the end on the B-side.
  • the position of the A-side opening cell in the B-side imaging data can be easily and appropriately utilized by utilizing the light incident from the A-side opening cell exiting from the end on the B-side of the cell. Can be detected. And according to the detection result, by setting the A-side open cell as a B-side sealed cell, one of both ends of each cell is opened, the other is sealed, and each cell is stretched.
  • the positions of the B-side opening cells and the B-side sealing cells are appropriately set so as to realize a honeycomb filter having a configuration in which the opening cells and the sealing cells are alternately arranged on both end faces in the direction. be able to.
  • the shape of the opening part of each cell was made into square shape, in order to identify a sealing cell based on the gravity center of each cell, the shape of the opening part of each cell is not restricted to this.
  • the shape may be a rectangle, a triangle, a polygon, a circle, an ellipse, or the like.
  • the shape and size of the opening of each cell are the same.
  • the present invention is not limited to this, and one or both of the shape and size of the opening of each cell are different for each cell. Also good.
  • a configuration may be employed in which cells having two types of shapes with different opening areas having a square opening shape are alternately arranged.
  • FIG. 15 a configuration may be employed in which cells having two types of shapes with different opening areas having a square opening shape are alternately arranged.
  • positioned alternately may be sufficient.
  • 15 and 16 show the arrangement of cells on the end face of the honeycomb filter W where the gas to be processed is introduced.
  • the area of the open cell is set larger than the area of the sealed cell on the end face on the side where the gas to be treated is introduced.
  • the arrangement of each cell is not limited to the configuration in which the center of gravity positions of each cell are arranged in a direction orthogonal to each other, but the second direction intersecting the first direction and the first direction at a non-perpendicular angle.
  • positioned so that it may line along may be sufficient.
  • the value of the predetermined distance ra1 is set as the open cell among the effective cells adjacent to the reference cell via the cell partition wall.
  • the distance between the center of gravity of the valid cell and the center of gravity of the reference cell should be set within the predetermined distance ra1, and the opening / sealing flag should be set to the same as that of the reference cell.
  • the predetermined distance ra1 is equal to or greater than the distance between the centroids of adjacent cells via the cell partition wall along the first direction and the second direction, and a direction different from the first direction and the second direction ( What is necessary is just to set to less than the distance of the cells which adjoin via a cell partition wall along the direction inclined with respect to the 1st direction and the 2nd direction.
  • the control unit 15 provided in the manufacturing apparatus 1 may be realized by software using a processor such as a CPU.
  • the manufacturing apparatus 1 includes a CPU (central processing unit) that executes instructions of a control program for realizing each function, a ROM (read only memory) that stores the program, and a RAM (random access memory) that expands the program. And a storage device (recording medium) such as a memory for storing the program and various data.
  • An object of the present invention is to provide a recording medium in which a program code (execution format program, intermediate code program, source program) of a control program of the manufacturing apparatus 1 that is software that realizes the above-described functions is recorded so as to be readable by a computer. This is achieved by supplying to the manufacturing apparatus 1 and reading and executing the program code recorded on the recording medium by the computer (or CPU or MPU).
  • Examples of the recording medium include tapes such as magnetic tapes and cassette tapes, magnetic disks such as floppy (registered trademark) disks / hard disks, and disks including optical disks such as CD-ROM / MO / MD / DVD / CD-R.
  • Card system such as IC card, IC card (including memory card) / optical card, or semiconductor memory system such as mask ROM / EPROM / EEPROM (registered trademark) / flash ROM.
  • the manufacturing apparatus 1 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network.
  • the communication network is not particularly limited.
  • the Internet intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication. A net or the like is available.
  • the transmission medium constituting the communication network is not particularly limited.
  • wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL line, etc.
  • infrared rays such as IrDA and remote control, Bluetooth (Registered trademark), 802.11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network, and the like can also be used.
  • the present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.
  • control unit 15 of the manufacturing apparatus 1 is not limited to that realized using software.
  • it may be configured by hardware logic, and is a combination of hardware that performs part of the processing and arithmetic means that executes software that controls the hardware and performs the remaining processing. Also good.
  • a large number of cells extending in a predetermined direction are arranged so as to be adjacent to each other via a cell partition wall, and each of the cells penetrates in the extending direction.
  • a closed cell specifying method for specifying a cell for sealing the cell end when the cell end of a part of the cells in the honeycomb body is sealed to manufacture a honeycomb filter A first imaging step of imaging one end surface of the body in the extending direction to obtain first imaging data as imaging data of the one end surface, and a barycentric position of each cell on the one end surface based on the first imaging data
  • a first center-of-gravity calculation step for calculating the first center of gravity, and one of the cells within a predetermined distance between the positions of the center of gravity is defined as one end surface side open cell that opens the end on the one end surface side, and the other is the one end surface side
  • One end to seal the end of It is characterized in that it comprises a first sealing cell specific step of setting as Gawafuana cell.
  • one end face in the extending direction of the honeycomb body is imaged to obtain first imaging data that is imaging data of the one end face, and each end face on the one end face is obtained based on the first imaging data.
  • the center of gravity position of the cell is calculated.
  • the imaging range in the first imaging data may be coordinated, and the barycentric position may be indicated by the coordinate system of the first imaging data.
  • one of the cells whose center-of-gravity positions are within a predetermined distance is one end surface side open cell for opening the end portion on the one end surface side, and the other end surface is for sealing the end portion on the one end surface side. Set as side-sealed cell.
  • the position of the sealing cell can be specified based on the center of gravity position of each cell, there is no need to detect the direction of the cell partition wall as in the prior art described above,
  • the one end surface side sealing cell can be set easily and appropriately.
  • the open cell and the sealed cell can be set easily and appropriately.
  • a reference cell is selected, a cell having a center of gravity within a predetermined distance from the center of gravity of the reference cell is selected as a target cell, and the reference cell is sealed on one end side.
  • One of the cells and the one end surface side open cell may be set, and the target cell may be set as the other of the one end surface side sealed cell and the one end surface side open cell.
  • the one end face side open cell and the one end face side sealed cell can be set easily and appropriately.
  • a second sealed cell specifying step set as a cell may be included.
  • the light incident from the one end face side open cell is emitted from the end part on the other end face side of the cell, and the one end face side open cell in the imaging data of the other end face is used.
  • the position (position on the other end face of the one end face side open cell) can be detected easily and appropriately.
  • the one end surface side open cell can be set as the other end surface side sealed cell, and the one end surface side sealed cell can be set as the other end surface side open cell.
  • a honeycomb filter having a configuration in which one of both end portions of each cell is opened and the other is sealed, and the open cells and the sealed cells are alternately arranged on both end surfaces in the extending direction of each cell.
  • the positions of the other-end-surface-side open cell and the other-end-surface-side sealed cell can be appropriately set.
  • One end surface side detected in the sealing cell temporary setting step for generating temporary setting data temporarily set as the other end surface side sealing cell for sealing the end portion on the other end surface side, and the one end surface side open cell detection step Criteria cell selected from open cells Among the cells for which the centroid position is calculated in the second centroid
  • a determination target cell selection step, and in the second sealed cell specifying step, the temporary setting data is corrected so that the determination target cell becomes the other end surface side sealing cell, thereby the other end surface side opening cell. And it is good also as a method of pinpointing the position of the other end side sealing cell.
  • the center of gravity of each cell on the other end surface is appropriately detected based on the image data of the other end surface imaged in the third imaging step, and the light incident from the one end surface side open cell is detected by the cell.
  • the position of one end surface side open cell in the imaging data of the other end surface (the position on the other end surface of the one end surface side open cell) is detected easily and appropriately using the emission from the end portion on the other end surface side can do.
  • a honeycomb filter having a configuration in which one of both end portions of each cell is opened and the other is sealed, and the open cells and the sealed cells are alternately arranged on both end surfaces in the extending direction of each cell.
  • the positions of the other-end-surface-side open cell and the other-end-surface-side sealed cell can be appropriately set.
  • the cells are arranged side by side along the second direction intersecting the first direction and the first direction on both end surfaces in the stretching direction, and the end surfaces are disposed on both end surfaces in the stretching direction.
  • the cell with the open end and the sealed cell are alternately arranged in the first direction and the second direction, and the predetermined distance is the first direction and the second direction. Or more than the distance between the centers of gravity of cells arranged adjacent to each other, and less than the distance between cells arranged adjacent to each other in a direction different from the first direction and the second direction. Good.
  • the cells are arranged side by side along the second direction intersecting the first direction and the first direction at both end surfaces in the extending direction of each cell, and the cells are arranged at both end surfaces in the extending direction.
  • An open cell and a sealed cell so as to realize a honeycomb filter having a configuration in which a cell having an open end on the end face side and a sealed cell are alternately arranged in the first direction and the second direction Can be set appropriately.
  • a large number of cells extending in a predetermined direction are arranged so as to be adjacent to each other through a cell partition wall.
  • the position of the open cell and the position of the sealed cell can be set easily and appropriately, and the sealed cell can be appropriately sealed.
  • a sealed cell identification device is a honeycomb body in which a large number of cells extending in a predetermined direction are arranged adjacent to each other via a cell partition wall, and each of the cells penetrates in the extending direction.
  • a sealed cell identifying device comprising a sealed position identifying unit that identifies a cell that seals the end when the cell end of some cells is sealed to produce a honeycomb filter.
  • the hole position specifying unit obtains first imaging data that is imaging data of one end face in the extending direction of the honeycomb body, calculates a center of gravity position of each cell on the one end face based on the first imaging data,
  • One of the cells whose center-of-gravity positions are within a predetermined distance is one end surface side opening cell that opens the end portion on the one end surface side, and the other is one end surface side that seals the end portion on the one end surface side.
  • 1st sealing position set as sealing cell It is characterized in that it comprises a specific unit.
  • the one end surface in the extending direction of the honeycomb filter before sealing the end portion of each cell is imaged to obtain imaging data of the one end surface, and the one data is acquired based on the imaging data.
  • the center-of-gravity position of each cell on the end face is calculated.
  • one of the cells whose center-to-center distance on the one end surface is within a predetermined distance is one end surface side opening cell that opens the end portion on the one end surface side, and the other is the end portion on the one end surface side. It is set as one end face side sealing cell to be sealed.
  • the position of the sealed cell can be specified based on the position of the center of gravity of each cell, so there is no need to detect the orientation of the cell partition wall as in the prior art described above. Can be set easily and appropriately. Moreover, even when the arrangement direction of each cell in the honeycomb filter and the axial direction of the coordinate system of the imaging data do not match, the open cell and the sealed cell can be set easily and appropriately. .
  • the cells are arranged side by side along the second direction intersecting the first direction and the first direction on both end surfaces in the stretching direction, and the end surfaces are disposed on both end surfaces in the stretching direction.
  • the cell with the open end and the sealed cell are alternately arranged in the first direction and the second direction, and the predetermined distance is the first direction and the second direction. Or more than the distance between the centers of gravity of cells arranged adjacent to each other, and less than the distance between cells arranged adjacent to each other in a direction different from the first direction and the second direction. Good.
  • each cell is arrange
  • An open cell and a sealed cell so as to realize a honeycomb filter having a configuration in which a cell having an open end on the end face side and a sealed cell are alternately arranged in the first direction and the second direction Can be set appropriately.
  • the sealing position specifying portion is configured such that light incident on the one end surface side open cell of the honeycomb body in which the end portion of the one end surface side sealing cell is sealed from the end portion on the other end surface side of the cell.
  • the position of the one end surface side opening cell on the other end surface is detected on the basis of the imaging data of the other end surface obtained by imaging the other end surface in a state where light is emitted so as to be emitted, and the one end surface side opening detected It is good also as a structure provided with the 2nd sealing position specific part which sets the cell corresponding to the position of a cell as the other end surface side sealing cell which seals the edge part of the said other end surface side.
  • emits from the edge part of the said other end surface side in the said cell, and the end surface side opening cell of the one end surface side opening cell in the other end surface imaging data is utilized.
  • the position (position on the other end face of the one end face side open cell) can be detected easily and appropriately.
  • one end face side open cell as the other end face side sealed cell, one end of each end of each cell is opened, the other is sealed, and each cell is stretched
  • the positions of the other end surface side open cells and the other end surface side closed cells are appropriately set so as to realize a honeycomb filter having a configuration in which the open cells and the closed cells are alternately arranged on both end surfaces in the direction. be able to.
  • the second sealing position specifying unit images the other end surface of the honeycomb body in which the end portion of the one end surface side sealed cell is sealed without irradiating the one end surface with the light. Based on the imaging data of the other end surface, the center of gravity of each cell on the other end surface is calculated, and one of the cells whose calculated center of gravity is within the predetermined distance is opened at the end on the other end surface side. Temporarily set as the other end surface side opening cell to be generated, and temporarily set as the other end surface side sealing cell that seals the other end surface side end portion, and generates the temporary setting data for the one end surface.
  • the center-of-gravity position of each one end surface side open cell is calculated based on the imaging data of the other end surface obtained by imaging the other end surface in a state where the other end surface is irradiated, and any one of the one end surface side open cells is calculated. Is selected as the determination reference cell and is included in the temporary setting data. By selecting the cell whose center of gravity is closest to the center of gravity of the determination reference cell among the cells as the determination target cell, and correcting the temporary setting data so that the determination target cell is the other end side sealed cell In addition, the positions of the other end surface side open cells and the other end surface side sealed cells may be specified.
  • the honeycomb filter after sealing the end portion of the one end surface side sealed cell in the one end surface, before sealing the end portion on the other end surface side in the extending direction of each cell.
  • the light is incident on the other end surface side of the cell.
  • one end of both ends of the cell is opened and the other is sealed, and the open cells and the sealed cells are alternately arranged on both end surfaces in the extending direction of each cell.
  • the positions of the other end surface side open cell and the other end surface side sealed cell can be appropriately set so as to realize the above-described configuration.
  • honeycomb filter manufacturing apparatus a large number of cells extending in a predetermined direction are arranged so as to be adjacent to each other via a cell partition wall.
  • a honeycomb filter manufacturing apparatus having a configuration in which open cells and sealed cells are alternately arranged, including any of the above-described sealed cell specifying devices, wherein the first sealed position is specified
  • the portion sets the position of the one end surface side sealing cell in the honeycomb filter in a state where the first film member is attached to the one end surface, and the second sealing position specifying portion is a second portion on the other end surface.
  • a sealing material injection hole for injecting a sealing material into a position corresponding to the hole cell and a position corresponding to the other end face side sealing cell set by the second sealing position specifying portion in the second film member It is characterized by having a perforating device for perforating the surface.
  • the position of the opening cell and the position of the sealing cell can be set easily and appropriately, and the sealing cell can be appropriately sealed.
  • the sealed cell specifying device may be realized by a computer.
  • a computer-readable recording medium on which it is recorded are also included in the scope of the present invention.
  • the present invention includes a honeycomb filter having a structure in which a large number of cells extending in a predetermined direction are provided, and open cells whose ends are opened on both end surfaces in the extending direction and closed sealed cells are alternately arranged. Can be applied to a sealed cell identifying method and a sealed cell identifying device for identifying a cell that seals an end when manufacturing a cell.

Abstract

Une unité d'analyse de surface A (32) calcule la position du centre de gravité de chaque cellule sur la base de données d'images pour une surface A d'un filtre en nid d'abeilles et, pour les cellules pour lesquelles la distance entre les centres de gravité se situe dans une plage prédéterminée, identifie une cellule comme étant une cellule ouverte et l'autre cellule comme étant une cellule étanche. Les cellules ouvertes et les cellules étanches du filtre en nid d'abeilles peuvent par conséquent être facilement établies.
PCT/JP2013/051505 2012-01-25 2013-01-24 Procédé d'identification de cellules étanches d'un filtre en nid d'abeilles, procédé de fabrication, dispositif d'identification de cellules étanches, dispositif de fabrication, programme et moyen d'enregistrement associés WO2013111834A1 (fr)

Applications Claiming Priority (2)

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JP2012013545A JP2013150958A (ja) 2012-01-25 2012-01-25 ハニカムフィルタの封孔セル特定方法、製造方法、封孔セル特定装置、製造装置、プログラムおよびその記録媒体
JP2012-013545 2012-01-25

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WO2016187180A1 (fr) * 2015-05-21 2016-11-24 Corning Incorporated Procédés pour inspecter des articles cellulaires
CN109563460A (zh) * 2016-12-20 2019-04-02 株式会社村田制作所 细胞过滤滤除器

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JP2019105462A (ja) * 2017-12-08 2019-06-27 日本電信電話株式会社 温度測定システムおよびその方法

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JPH04293177A (ja) * 1991-03-22 1992-10-16 Stanley Electric Co Ltd 画像処理方法
JPH09153144A (ja) * 1995-11-30 1997-06-10 Nec Corp 市松模様自動作成装置および方法
JPH11175737A (ja) * 1997-12-10 1999-07-02 Ngk Insulators Ltd ハニカム構造体の位置決め方法および加工方法
JP2002257736A (ja) * 2001-03-02 2002-09-11 Ngk Insulators Ltd ハニカム構造体の端面検査方法及び装置
JP2004037248A (ja) * 2002-07-03 2004-02-05 Sumitomo Metal Mining Co Ltd 検査装置および貫通孔の検査方法
JP2005028299A (ja) * 2003-07-07 2005-02-03 Hitachi Metals Ltd ハニカムフィルタの栓詰め方法
JP2008055340A (ja) * 2006-08-31 2008-03-13 Denso Corp ハニカム構造体におけるセルの閉塞状態認識方法及び閉塞状態検査方法並びにハニカム構造体の製造方法
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JPH04293177A (ja) * 1991-03-22 1992-10-16 Stanley Electric Co Ltd 画像処理方法
JPH09153144A (ja) * 1995-11-30 1997-06-10 Nec Corp 市松模様自動作成装置および方法
JPH11175737A (ja) * 1997-12-10 1999-07-02 Ngk Insulators Ltd ハニカム構造体の位置決め方法および加工方法
JP2002257736A (ja) * 2001-03-02 2002-09-11 Ngk Insulators Ltd ハニカム構造体の端面検査方法及び装置
JP2004037248A (ja) * 2002-07-03 2004-02-05 Sumitomo Metal Mining Co Ltd 検査装置および貫通孔の検査方法
JP2005028299A (ja) * 2003-07-07 2005-02-03 Hitachi Metals Ltd ハニカムフィルタの栓詰め方法
JP2008055340A (ja) * 2006-08-31 2008-03-13 Denso Corp ハニカム構造体におけるセルの閉塞状態認識方法及び閉塞状態検査方法並びにハニカム構造体の製造方法
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WO2016187180A1 (fr) * 2015-05-21 2016-11-24 Corning Incorporated Procédés pour inspecter des articles cellulaires
US10769772B2 (en) 2015-05-21 2020-09-08 Corning Incorporated Methods for inspecting cellular articles
CN109563460A (zh) * 2016-12-20 2019-04-02 株式会社村田制作所 细胞过滤滤除器
CN109563460B (zh) * 2016-12-20 2022-02-22 株式会社村田制作所 细胞过滤滤除器

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