WO2011145654A1 - Opening sealing device and opening sealing method - Google Patents

Opening sealing device and opening sealing method Download PDF

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Publication number
WO2011145654A1
WO2011145654A1 PCT/JP2011/061444 JP2011061444W WO2011145654A1 WO 2011145654 A1 WO2011145654 A1 WO 2011145654A1 JP 2011061444 W JP2011061444 W JP 2011061444W WO 2011145654 A1 WO2011145654 A1 WO 2011145654A1
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WO
WIPO (PCT)
Prior art keywords
depth
variable
recess
main body
honeycomb structure
Prior art date
Application number
PCT/JP2011/061444
Other languages
French (fr)
Japanese (ja)
Inventor
康輔 魚江
照夫 小森
正春 森
Original Assignee
住友化学株式会社
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Application filed by 住友化学株式会社 filed Critical 住友化学株式会社
Publication of WO2011145654A1 publication Critical patent/WO2011145654A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/003—Apparatus or processes for treating or working the shaped or preshaped articles the shaping of preshaped articles, e.g. by bending
    • B28B11/006—Making hollow articles or partly closed articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/003—Apparatus or processes for treating or working the shaped or preshaped articles the shaping of preshaped articles, e.g. by bending
    • B28B11/006—Making hollow articles or partly closed articles
    • B28B11/007—Using a mask for plugging

Definitions

  • the present invention relates to a sealing device and a sealing method.
  • honeycomb filters are widely known for DPF (Diesel particulate filter) and the like.
  • This honeycomb filter has a structure in which one end side of some through holes of a honeycomb structure having a large number of through holes is sealed with a sealing material, and the other end side of the remaining through holes is sealed with a sealing material.
  • Patent Document 1 discloses a method for manufacturing such a honeycomb filter.
  • the sealing material is supplied to the end portion of the through hole of the honeycomb structure by pressing the sealing material with the piston 8 against one end of the honeycomb structure 1 disposed in the cylinder 7.
  • the present invention has been made in view of the above problems, and an object thereof is to provide a sealing device and a sealing method capable of easily performing a sealing operation.
  • the sealing device is a sealing device that seals end portions of a plurality of through holes of a honeycomb structure with a sealing material over a predetermined sealing length.
  • the sealing device includes a recess forming portion that forms a variable depth recess, a holding portion that holds the end surface of the honeycomb structure having a plurality of through holes on the variable depth recess, and a variable depth recess.
  • a depth adjusting unit that changes the depth.
  • the maximum depth of the variable depth recess is 10% or more and less than 100% of the predetermined sealing length.
  • the sealing material stored in the variable depth recess is supplied from the lower end surface of the honeycomb structure, whereby the sealing operation can be easily performed.
  • the maximum depth Dp of the variable depth recess is 10% or more and less than 100% of the predetermined sealing length L. Therefore, when the depth control method is adopted in which the depth of the variable depth recess is set to the maximum depth Dp when the sealing material is stored and the depth of the variable depth recess is set to zero during the sealing, the maximum depth is Compared to an unnecessarily long device, the inner volume of the variable depth recess when storing the sealing material (ie, at the maximum depth) is extremely large compared to the volume of the sealing material required for one sealing.
  • the sealed honeycomb structure can be efficiently manufactured at low cost.
  • the maximum depth Dp of the depth-variable depression is defined such that the area of the end face of the honeycomb structure is A 0 , the opening area to be sealed of the end face of the honeycomb structure is A 1 , and the predetermined sealing length is L. sometimes, preferably satisfies (a 1 / a 0) L ⁇ Dp ⁇ 2 (a 1 / a 0) L.
  • the recess forming portion has a main body portion having a depth fixing recess, and an elastic plate provided so as to cover the depth fixing recess of the main body portion and forming an inner surface of the variable recess.
  • a flow path capable of supplying a fluid between the depth fixing depression of the main body portion and the elastic plate, and the depth adjusting portion passes the fluid between the main body portion and the elastic plate via the flow path. It is preferable to supply.
  • the fluid can be an incompressible fluid.
  • the inner surface of the depth fixing recess of the main body portion includes a porous body, and the flow path includes pores of the porous body.
  • the dent forming part has a main body part having a fixed depth dent, and a piston plate provided in the fixed depth dent to form the bottom surface of the variable depth dent, and the depth adjusting part has a piston plate.
  • the mode of moving is also one of the preferred modes of the present invention.
  • a method for sealing a honeycomb structure according to the present invention includes a step of storing a sealing material in the depth variable depression of the above-described sealing device, and a plurality of honeycomb structures by reducing the depth of the depth variable depression. Supplying to the through hole.
  • the other sealing method of the honeycomb structure includes a step of storing a sealing material in the depth variable recess, A step of disposing an end face of the honeycomb structure having a plurality of through holes on the depth variable depression; Supplying the sealing material to end portions of the plurality of through holes of the honeycomb structure over a predetermined sealing length by reducing the depth of the depth variable depression to zero, and
  • the depth of the depth variable recess is a maximum depth within a variable range, and the maximum depth is 10% or more and less than 100% of the predetermined sealing length.
  • a sealing work can be easily performed by supplying the sealing material stored in the variable depth recess from the lower end surface of the honeycomb structure.
  • the sealing material is stored in the maximum depth variable recess, and the depth of the variable depth recess is set to zero at the time of sealing.
  • the variable operation of the depth variable recess is easy.
  • the maximum depth of the variable depth recess is 10% or more and less than 100% of the predetermined sealing length.
  • the maximum depth Dp of the depth-variable depression is defined such that the area of the end face of the honeycomb structure is A 0 , the opening area to be sealed of the end face of the honeycomb structure is A 1 , and the predetermined sealing length Is preferably (A 1 / A 0 ) L ⁇ Dp ⁇ 2 (A 1 / A 0 ) L.
  • the variable depth recess is formed by a main body portion having a fixed depth recess, and an elastic plate that is provided so as to cover the fixed depth recess of the main body portion and forms an inner surface of the variable depth recess.
  • the main body includes a flow path capable of supplying a fluid between the depth fixing recess of the main body and the elastic plate, It is preferable to reduce the depth of the depth-variable recess by supplying fluid between the main body and the elastic plate via the flow path.
  • a sealing device and a sealing method capable of more easily sealing are provided.
  • FIG. 1 is a schematic cross-sectional view of a sealing device according to a first embodiment of the present invention.
  • FIG. 2 is a view taken along the line II-II of the sealing device of FIG. 3A is a perspective view of a honeycomb structure used in the sealing device of FIG. 1, and
  • FIG. 3B is a partially enlarged view of FIG. 4 (a) is a perspective view of the mask of FIG. 1, and
  • FIG. 4 (b) is a partially enlarged view of FIG. 4 (a).
  • 5A is a partial cross-sectional view for explaining the operation of the sealing device of FIG. 1
  • FIG. 5B is a partial cross-sectional view subsequent to FIG. 6A is a partial cross-sectional view subsequent to FIG. 5B, and
  • FIG. 6B is a partial cross-sectional view subsequent to FIG. 6A.
  • 7A is a partial cross-sectional view subsequent to FIG. 6B, and
  • FIG. 7B is a partial cross-sectional view subsequent to FIG. 7A.
  • 8A is a partial cross-sectional view subsequent to FIG. 7B, and
  • FIG. 8B is a partial cross-sectional view subsequent to FIG. 7A.
  • FIG. 9 is a schematic cross-sectional view of a sealing device according to a second embodiment of the present invention.
  • FIG. 1 is a schematic cross-sectional view of a sealing device 100 according to an example of this embodiment
  • FIG. 2 is a view taken along the line II-II in FIG.
  • the sealing device 100 according to the present embodiment mainly includes a main body unit 10, an elastic plate 20, a pump 50, and a holding unit 80.
  • the holding unit 80 includes a holder 81 that holds the honeycomb structure 70 and a pneumatic cylinder 82 to which the holder 81 is connected.
  • An example of the honeycomb structure 70 used in the present embodiment is a cylindrical body in which a large number of through holes 70a are arranged substantially in parallel as shown in FIG. 1 and FIG.
  • the cross-sectional shape of the through hole 70a is a square as shown in FIG.
  • the plurality of through holes 70a are arranged in a square arrangement in the honeycomb structure 70, that is, such that the central axis of the through hole 70a is located at the apex of the square, respectively.
  • the square size of the cross section of the through hole 70a can be set to, for example, 0.8 to 2.5 mm on a side.
  • the length of the honeycomb structure 70 in the direction in which the through holes 70a extend is not particularly limited, but may be 40 to 350 mm, for example.
  • the outer diameter of the honeycomb structure 70 is not particularly limited, but may be, for example, 100 to 320 mm.
  • the material of the honeycomb structure 70 is not particularly limited, but a ceramic material is preferable from the viewpoint of high temperature resistance. Examples thereof include alumina, silica, mullite, cordierite, glass, oxides such as aluminum titanate, silicon carbide, silicon nitride, and metal.
  • the aluminum titanate can further contain magnesium and / or silicon.
  • Such a honeycomb structure 70 is usually porous.
  • the honeycomb structure 70 may be a green molded body (unfired molded body) that becomes a ceramic material as described above by firing later.
  • a green molded object contains the inorganic compound source powder which is a ceramic raw material, organic binders, such as methylcellulose, and the additive added as needed.
  • the inorganic compound source powder includes an aluminum source powder such as ⁇ -alumina powder, and a titanium source powder such as anatase-type or rutile-type titania powder.
  • magnesium source powders such as magnesia powder and magnesia spinel powder and / or silicon source powders such as silicon oxide powder and glass frit can be included.
  • organic binder examples include celluloses such as methylcellulose, carboxymethylcellulose, hydroxyalkylmethylcellulose, and sodium carboxymethylcellulose; alcohols such as polyvinyl alcohol; and lignin sulfonate.
  • additives include a pore-forming agent, a lubricant and a plasticizer, a dispersant, and a solvent.
  • Examples of the pore former include carbon materials such as graphite; resins such as polyethylene, polypropylene, and polymethyl methacrylate; plant materials such as starch, nut shells, walnut shells, and corn; ice; and dry ice.
  • Lubricants and plasticizers include alcohols such as glycerol; higher fatty acids such as caprylic acid, lauric acid, palmitic acid, arachidic acid, oleic acid and stearic acid; stearic acid metal salts such as Al stearate; polyoxyalkylene alkyl Examples include ether.
  • dispersant examples include inorganic acids such as nitric acid, hydrochloric acid and sulfuric acid; organic acids such as oxalic acid, citric acid, acetic acid, malic acid and lactic acid; alcohols such as methanol, ethanol and propanol; ammonium polycarboxylate Surfactant etc. are mentioned.
  • solvent for example, alcohols such as methanol, ethanol, butanol and propanol; glycols such as propylene glycol, polypropylene glycol and ethylene glycol; and water can be used.
  • the holder 81 holds the honeycomb structure 70 so that the lower end surface 70 d of the through hole 70 a, that is, the opening surfaces of the plurality of through holes 70 a face downward, and the lower end surface is a depth described later. It is held on the variable recess 20d.
  • the pneumatic cylinder 82 includes a cylinder 82a extending in the vertical direction and a piston 82b provided in the cylinder 82a. By adjusting the pressure supplied from the outside, the pressure on both the upper and lower sides of the piston 82b can be adjusted. ing. As a result, the pneumatic cylinder 82 can move the holder 81 in a direction in which the honeycomb structure 70 and an elastic plate 20 described later approach each other and in a direction in which they move away from each other. In addition, the pneumatic cylinder 82 allows the honeycomb structure 70 to be in close contact with the mask 170 described later by pressing the holder 81 downward with a predetermined force in accordance with the gas supply pressure before and after the piston 82b. it can.
  • the pneumatic cylinder 82 can also permit the holder 81 to move freely in the vertical direction by releasing the pressure before and after the piston. That is, the holding unit 80 can switch between a state in which the honeycomb structure 70 held by the holder 81 can freely move upward and a state in which the honeycomb structure 70 is fixed to the main body 10. .
  • the main body 10 is provided under the holding unit 80.
  • the main body 10 is made of a rigid material.
  • the rigid material include metals such as stainless steel and polymer materials such as fiber reinforced plastic.
  • a depth fixing recess 10d having a side surface 10b and a bottom surface 10c is formed on the upper surface of the main body 10.
  • the shape of the fixed depth recess 10d is a columnar shape as shown in FIGS.
  • the side surface 10b of the depth fixing recess 10d is perpendicular to the upper surface 10a of the main body 10 and the bottom surface 10c is parallel to the upper surface 10a.
  • the inner surface of the fixed depth recess 10d in the main body 10 is formed of a porous body 10p. Furthermore, the communication path 10e is connected to the porous body 10p. In the present embodiment, the communication passage 10e is connected to a portion forming the bottom surface 10c of the porous body 10p, but may be opened to a portion forming the side surface 10b of the porous body 10p.
  • a porous body will not be specifically limited if it has a continuous ventilation hole, For example, a metal grain sintered compact etc. are mentioned.
  • a pump (depth adjusting unit) 50 is connected to the communication path 10e through a connection pipe 14.
  • the pump 50 includes a cylinder 51, a piston 53 disposed in the cylinder 51, and a piston rod 54 connected to the piston 53.
  • a motor 55 that reciprocates the piston rod 54 in the axial direction is connected to the piston rod 54.
  • the piston rod 54 may be moved manually.
  • the elastic plate 20 is disposed on the upper surface 10a of the main body 10 so as to cover the opening surface of the fixed depth recess 10d.
  • the elastic plate 20 has elasticity and can be easily deformed. As shown on the left side of the depth fixing recess 10d in FIG. 1, the elastic plate 20 is disposed along the inner surface of the depth fixing recess 10d, thereby changing the depth having the bottom surface 20c and the side surface 20b. A recess 20d is formed.
  • the bottom surface 20 c is disposed to face the lower end surface 70 d of the honeycomb structure 70 and has substantially the same shape as the outer shape of the lower end surface 70 d of the honeycomb structure 70.
  • the elastic plate 20 and the depth fixing recess 10 d of the main body portion 10 constitute the recess forming portion 99.
  • a rubber plate is preferable.
  • the rubber include natural rubber, and synthetic rubber such as styrene butadiene rubber, butadiene rubber, butyl rubber, ethylene propylene rubber, nitrile rubber, chloroprene rubber, fluorine rubber, silicone rubber, and urethane rubber.
  • the thickness of the elastic plate 20 is not particularly limited, but can be, for example, 0.3 to 3.0 mm.
  • the elastic plate 20 is fixed to the main body 10 by a ring member 25 and a bolt 31.
  • the ring member 25 has an opening 25a at a position corresponding to the depth fixing recess 10d of the main body portion 10, thereby forming an annular shape.
  • the ring member 25 is arrange
  • Through-holes h are formed in the ring member 25 and the elastic plate 20, and screw holes j corresponding to the through-holes h are formed in the main body portion 10.
  • the bolts 31 are disposed through the through holes h, and are screwed into the screw holes j to be fixed.
  • an elastic plate is provided on the upper surface 10a of the main body 10 around the depth fixing recess 10d.
  • the peripheral part of 20 is closely attached and fixed.
  • the inner diameter of the opening 25 a of the ring member 25 is preferably larger than the inner diameter of the depth fixing recess 10 d of the main body 10.
  • a closed space V formed by the main body 10, the connection pipe 14, and the cylinder 51 is formed between the elastic plate 20 and the piston 53, and the fluid FL is contained in the closed space V. Filled.
  • the fluid FL is not particularly limited.
  • One example of the fluid FL is an incompressible fluid or liquid.
  • An example of the liquid is spindle oil or the like.
  • Another example of the fluid FL is a compressible fluid or gas. Examples of gas are air and nitrogen.
  • the bottom surface 20c of the variable depth recess 20d can be brought into contact with the bottom surface 10c of the fixed depth recess 10d, while the bottom surface 20c of the variable depth recess 20d is kept away from the bottom surface 10c of the fixed depth recess 10d. Thus, it can be brought closer to the lower end surface 70d of the honeycomb structure 70.
  • Dp may be 10% or more and less than 100%, preferably 20% or more and less than 90%, more preferably with respect to a set value of the sealing length L at the end of a through hole 70a to be described later Is 30% or more and less than 80%, more preferably 35% or more and less than 70%.
  • the sealing length L is an average value of the lengths in the axial direction of the through holes of the sealing portion 70p formed by the sealing material, as shown in FIG.
  • the maximum depth Dp of the depth variable recess 20d is, A 0 the area of the lower end surface 70d of the honeycomb structure 70, the opening area to be sealed in the lower end surface 70d of the honeycomb structure 70 A 1
  • the sealing length is L
  • Dp The upper limit value corresponds to twice this volume V.
  • the opening area A 1 to be sealed is about the total opening area A 3 of the total through-hole 70a Often halved.
  • (A 1 / A 0) is about 30 to 45%, typically 35%.
  • the mask 170 is disposed in the opening 25 a of the ring member 25 on the elastic plate 20.
  • the material of the mask 170 is not specifically limited, For example, a metal and resin are mentioned.
  • FIG. 4A shows an example of the mask 170 used in this embodiment.
  • the mask 170 is a circular plate-like member and has a large number of through-holes 170a extending in the thickness direction.
  • the cross-sectional shape of the through hole 170a is a square corresponding to the through hole 70a (see FIG. 3B) of the honeycomb structure 70, as shown in FIG. 4B.
  • the plurality of through holes 170a are arranged in a staggered manner as shown in FIG. 4B, and each through hole 170a is formed of the plurality of through holes 70a arranged in a square shape in FIG. 3B. These are disposed to face only the plurality of through holes 70ai that are not adjacent to each other in the vertical and horizontal directions.
  • the mask 170 is formed with an orientation flat 170b, and the ring member 25 may be provided with a projection 25b corresponding to the orientation flat correspondingly.
  • the outer diameter of the mask 170 is preferably larger than the inner diameter of the depth fixing recess 10 d of the main body 10.
  • the main body 10 is provided with a vibrator 140 such as an ultrasonic vibrator.
  • the pneumatic cylinder 82 is driven in advance and pulled up above the holder 81 that holds the honeycomb structure 70, and the mask 170 is removed from the elastic plate 20.
  • the fluid FL is discharged downward from the depth fixing recess 10d of the main body 10 through the flow path.
  • the elastic plate 20 is deformed and is brought into close contact with the side surface 10b and the bottom surface 10c of the depth fixing recess 10d, thereby forming the variable depth recess 20d by the elastic plate 20.
  • the depth of the depth variable recess 20d is the maximum depth within a variable range
  • the maximum depth Dp is the above-described predetermined value with respect to the sealing length L.
  • the sealing material 130 is supplied into the depth variable recess 20d of the elastic plate 20, and the sealing material is stored. If necessary, the surface of the sealing material 130 is flattened and defoamed by driving the vibrator 140.
  • the sealing material 130 is not particularly limited as long as it can close the end of the through hole 70a of the honeycomb structure 70, but is preferably liquid.
  • a slurry containing a ceramic material or a ceramic raw material, a binder, a lubricant, a pore former, and a solvent can be exemplified.
  • the ceramic material examples include the constituent material of the above-described honeycomb structure, the raw material thereof, or a mixture thereof.
  • the amount of the ceramic material or raw material used can be, for example, 50 to 85 parts by weight with respect to 100 parts by weight of the slurry.
  • binder examples include celluloses such as methylcellulose, carboxymethylcellulose, hydroxyalkylmethylcellulose, and sodium carboxymethylcellulose; alcohols such as polyvinyl alcohol; and organic binders such as lignin sulfonate.
  • the amount of binder used can be, for example, 0 to 30 parts by weight with respect to 100 parts by weight of the slurry.
  • Lubricants include alcohols such as glycerin; higher fatty acids such as caprylic acid, lauric acid, palmitic acid, arachidic acid, oleic acid and stearic acid; and stearic acid metal salts such as aluminum stearate.
  • the amount of lubricant used can be, for example, 0.5 to 20 parts by weight with respect to 100 parts by weight of the slurry.
  • pore former examples include carbon materials such as graphite; resins such as polyethylene, polypropylene, and polymethyl methacrylate; plant materials such as starch, nut shells, walnut shells, and corn; ice; and dry ice.
  • the amount of pore-forming agent used can be, for example, 0 to 20 parts by weight with respect to 100 parts by weight of the slurry.
  • the solvent for example, alcohols such as methanol, ethanol, butanol and propanol; glycols such as propylene glycol, polypropylene glycol and ethylene glycol; and water can be used. Of these, water is preferable, and ion-exchanged water is more preferably used from the viewpoint of few impurities.
  • the amount of the solvent used can be, for example, 10 to 40 parts by weight with respect to 100 parts by weight of the slurry.
  • the amount of the sealing material 130 is not particularly limited as long as the liquid level is the maximum depth Dp or less. Specifically, for example, an amount V of 1. required for filling a sealing material over a desired sealing length L in all ends of a desired through-hole 70a on one end surface of the honeycomb structure 70, respectively. It may be about 0 to 1.2 times.
  • the mask 170 is set on the elastic plate 20 so as to face the depth variable recess 20 d, and then the holding tool 81 is moved downward by the pneumatic cylinder 82.
  • the lower end surface 70d of the honeycomb structure 70 is brought into contact with the mask 170, whereby a part of the through holes 70a of the honeycomb structure 70 and the through holes 170a of the mask 170 are communicated. Is pressed downward to fix the honeycomb structure 70 to the mask 170 and the main body 10.
  • the fluid FL is supplied between the depth fixing recess 10d and the elastic plate 20 through the flow path, and as shown in FIG. Further, the bottom surface 20c of the elastic plate 20 moves toward the mask 170, that is, the depth of the variable depth recess 20d is reduced. As shown in FIG. 7A, this process is performed until the elastic plate 20 comes into contact with the mask 170 and the deformation of the elastic plate 20 is eliminated, that is, the depth of the variable depth recess 20d becomes zero. .
  • the sealing material 130 is supplied over the sealing length L into the partial through-hole 70a of the honeycomb structure 70 through the through-hole 170a of the mask 170, and the sealing part 70p is formed.
  • the piston 53 is further raised to move the elastic plate 20 and the main body portion 10 together. Further, fluid FL is supplied. Thereby, as shown in FIG. 7B, the elastic plate 20 is deformed in a convex shape upward, and the mask 170 and the honeycomb structure 70 move upward. At this time, since the peripheral portion of the elastic plate 20 deformed into a convex shape is separated from the mask 170, the mask 170 and the honeycomb structure 70 can be easily separated from the main body portion 10.
  • the top and bottom are turned over, and the honeycomb structure 70 is again held by the holder 81.
  • the same operation is performed using a mask 170 ′ in which the mask 170 and the through holes 170 a are arranged in a staggered arrangement opposite to each other.
  • the other end side of the remaining through-holes 70a is sealed by the sealing material, and the sealing part 70p is formed.
  • the mask 170 ′ and the honeycomb structure 70 can be easily separated from the main body 10 and the elastic plate 20 by deforming the elastic plate 20 in a convex shape in the same manner as described above.
  • a honeycomb filter can be manufactured by drying, firing, etc., the honeycomb structure 70 in which both ends of the through hole 70a are sealed.
  • the sealing material 130 stored in the variable depth recess 20d is supplied from the lower end surface 70d of the honeycomb structure 70, so that the sealing operation can be easily performed. Further, since the sealing material is stored in the maximum depth variable recess 20d and the depth of the variable depth recess 30d is set to zero at the time of sealing, it is necessary to fix the depth of the recess to an intermediate depth. In addition, the variable operation of the depth variable recess 20d during storage or sealing is easy. Further, the maximum depth Dp of the variable depth recess 20d is 10% or more and less than 100% of the sealing length L.
  • the internal volume of the depth-variable recess 20d when storing the sealing material is the amount of the sealing material necessary for one sealing. It can be in an appropriate range that is not extremely large compared to the volume. As a result, it is less likely that the depth of the depression is changed wastefully in the sealing operation, and the sealing operation can be performed in a short time. Further, the sealing material 130 can be used up at a time to the variable depth depression 20d, and the sealing material can be used every time the sealing work is performed, thereby eliminating waste of the sealing material. There are few alterations, such as quantity, and unnecessary adhesion to the elastic plate 20. Therefore, the sealed honeycomb structure can be manufactured at a low cost.
  • FIG. 9 is a schematic sectional view of the sealing device 200.
  • the main difference between the sealing device 200 according to the present embodiment and the sealing device 100 according to the first embodiment is that a piston 65 is disposed inside the depth fixing recess 10d instead of the elastic plate 20.
  • the piston 65 has a piston plate 63 and a piston rod 64.
  • the piston plate 63 is disposed in the fixed depth recess 10d, and the side surface 10b of the fixed depth recess 10d and the upper surface 63c of the piston plate 63 form a variable depth recess 20d.
  • the maximum depth Dp of the depth variable recess 20d is the same as in the first embodiment.
  • the piston plate 63 and the depth fixing recess 10 d of the main body portion 10 constitute the recess forming portion 99.
  • An end portion of the piston rod 64 penetrating the main body portion 10 is connected to a motor (depth adjusting portion) 55, and the piston plate 63 can be moved with respect to the lower end surface 70 d of the honeycomb structure 70.
  • the porous body 10p is unnecessary. Also according to the present embodiment, the same effect as that of the first embodiment can be obtained by the variable depth recess 20d.
  • this invention is not limited to the said embodiment, A various deformation
  • the elastic plate 20 is fixed to the main body 10 by the ring member 25 and the bolt 31, but the fixing method is not particularly limited.
  • the elastic plate 20 may be fixed to the upper surface 10a of the main body 10 by an adhesive.
  • the communication path 10e is formed by the main body 10 and the connection pipe 14, but the pump 50 may be directly connected to the main body 10 without the connection pipe 14. Further, the present invention can be implemented without the porous body 10p.
  • a piston pump including a cylinder 51, a piston 53, and a piston rod 54 is employed as the pump 50.
  • the pump 50 is not particularly limited as long as the fluid can be supplied and discharged.
  • the shape of the variable depth recess 20d is not particularly limited, and can be set as appropriate according to the shape of the end of the honeycomb structure 70 to be sealed.
  • the outer shape of the honeycomb structure 70 may not be a cylinder, and may be, for example, an elliptical column, a rectangular column, a square column, or the like. Therefore, the shape of the variable depth recess 10d can also be various columnar shapes corresponding thereto.
  • the side surface 20b need not be perpendicular to the top surface 10a of the main body 10 and the bottom surface 20c need not be parallel, and may be, for example, a slope or a curved surface.
  • the cross-sectional shape of the through hole 70a of the honeycomb structure 70 may not be a square, and may be, for example, a rectangle, a triangle, a polygon, a circle, or the like. Further, the honeycomb structure may have through holes with different diameters and / or may have through holes with different shapes. Furthermore, the arrangement of the through holes 70a may not be a square arrangement, for example, a triangular arrangement, a staggered arrangement, or the like.
  • the holding unit 80 includes the pneumatic cylinder 82, but is not limited thereto, and can be replaced with various mechanisms such as a gear mechanism. Further, it is possible to simply hold the end face of the honeycomb structure downward without providing a moving mechanism.
  • the plate-like mask 170 having a large number of through holes is adopted, but the place to be shielded by the mask is arbitrary, and can be appropriately changed according to the shape and arrangement of the through holes 70a.
  • the present invention can be implemented without using such a mask 170.
  • the plug may be plugged with a material that decomposes when heated in some of the through holes 70a of the honeycomb structure 70 before the sealing process, and the plug may be pyrolyzed after the sealing.
  • the honeycomb structure 70 can be easily separated from the main body 10 and the elastic plate 20 by the elastic plate 20 that deforms into a convex shape after the sealing process. .
  • SYMBOLS 10 Main-body part, 10d ... Depth fixed hollow, 10e ... Communication part, 10p ... Porous body, 20 ... Elastic board, 20c ... Bottom, 20d ... Depth variable hollow, 30 ... Recess, 50 ... Pump (depth adjustment) Part), 55 ... motor (depth adjusting part), 65 ... piston, 70 ... honeycomb structure, 70a ... through hole, 70d ... lower end surface, 80 ... holding part, 99 ... hollow forming part, 100, 200 ... sealing device 170 ... Mask.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Filtering Materials (AREA)

Abstract

An opening sealing device (100) for sealing the ends of through-holes (70a) of a honeycomb structure (70) along a predetermined sealing length (L) by an opening sealing material. The device (100) is provided with: a recess forming section (10, 20) for forming a recess (20d) having a variable depth; a holding section (80) for holding an end surface (70d) of the honeycomb structure (70), which has the through-holes, above the recess (20d) having a variable depth; and a depth adjustment section (50) for changing the depth of the recess (20d) having a variable depth. The maximum depth (Dp) of the recess (20d) having a variable depth is more than or equal to 10% and less than 100% of the predetermined sealing length (L).

Description

封口装置及び封口方法Sealing device and sealing method
　本発明は、封口装置及び封口方法に関する。 The present invention relates to a sealing device and a sealing method.
　従来より、ハニカムフィルタが、DPF（Diesel particulate filter）用等として広く知られている。このハニカムフィルタは、多数の貫通孔を有するハニカム構造体の一部の貫通孔の一端側を封口材で封じると共に、残りの貫通孔の他端側を封口材で封じた構造を有する。そして、特許文献１には、このようなハニカムフィルタを製造する方法が開示されている。特許文献１では、シリンダ７内に配置したハニカム構造体１の一端に対して、ピストン８により封口材を押圧することにより、ハニカム構造体の貫通孔の端部に封口材を供給している。 Conventionally, honeycomb filters are widely known for DPF (Diesel particulate filter) and the like. This honeycomb filter has a structure in which one end side of some through holes of a honeycomb structure having a large number of through holes is sealed with a sealing material, and the other end side of the remaining through holes is sealed with a sealing material. Patent Document 1 discloses a method for manufacturing such a honeycomb filter. In Patent Document 1, the sealing material is supplied to the end portion of the through hole of the honeycomb structure by pressing the sealing material with the piston 8 against one end of the honeycomb structure 1 disposed in the cylinder 7.
特公昭６３－２４７３１号公報Japanese Examined Patent Publication No. 63-24731
　しかしながら、シリンダ内に挿入したハニカム構造体に対して上面から封口材を導入する従来の方法では、封口作業が煩雑である。 However, in the conventional method in which the sealing material is introduced from the upper surface into the honeycomb structure inserted into the cylinder, the sealing work is complicated.
　本発明は上記課題に鑑みてなされたものであり、封口作業を簡単に行なえる封口装置及び封口方法を提供することを目的とする。 The present invention has been made in view of the above problems, and an object thereof is to provide a sealing device and a sealing method capable of easily performing a sealing operation.
　本発明に係る封口装置は、ハニカム構造体の複数の貫通孔の端部を封口材で所定の封口長さに亘って封口する封口装置である。そして、この封口装置は、深さ可変窪みを形成する窪み形成部と、複数の貫通孔を有するハニカム構造体の端面を前記深さ可変窪みの上に保持する保持部と、深さ可変窪みの深さを変化させる深さ調節部と、を備える。さらに、深さ可変窪みの最大深さが前記所定の封口長さの１０％以上かつ１００％未満である。 The sealing device according to the present invention is a sealing device that seals end portions of a plurality of through holes of a honeycomb structure with a sealing material over a predetermined sealing length. The sealing device includes a recess forming portion that forms a variable depth recess, a holding portion that holds the end surface of the honeycomb structure having a plurality of through holes on the variable depth recess, and a variable depth recess. A depth adjusting unit that changes the depth. Furthermore, the maximum depth of the variable depth recess is 10% or more and less than 100% of the predetermined sealing length.
　本発明によれば、深さ可変窪み内に貯留した封口材をハニカム構造体の下端面から供給することにより、容易に封口作業が行える。また、深さ可変窪みの最大深さＤｐが所定の封口長さＬの１０％以上かつ１００％未満である。したがって、封口材の貯留時に深さ可変窪みの深さを最大深さＤｐとし、封口時に深さ可変窪みの深さをゼロにするという深さの制御方法を採用した場合に、最大深さが無用に長い装置に比して、封口材を貯留する時（すなわち、最大深さ時）の深さ可変窪みの内容積を、１回の封口に必要な封口材の体積に比して極端に大きすぎない適切な範囲にすることができる。これにより、封口作業に於いて窪みの深さを無駄に大きく変化させることが少なくなり、封口作業を短時間で行うことができる。また、一回で使い切る量の封口材を深さ可変動窪みに供給し、一回の封口作業毎に封口材を使いきる封口作業によって、封口材の無駄を少なくすることができ、封口材の水分量等の変質等や、封口材の装置への不要な付着も少ない。したがって、封口されたハニカム構造体を低コストで効率よく製造することが出来る。 According to the present invention, the sealing material stored in the variable depth recess is supplied from the lower end surface of the honeycomb structure, whereby the sealing operation can be easily performed. Further, the maximum depth Dp of the variable depth recess is 10% or more and less than 100% of the predetermined sealing length L. Therefore, when the depth control method is adopted in which the depth of the variable depth recess is set to the maximum depth Dp when the sealing material is stored and the depth of the variable depth recess is set to zero during the sealing, the maximum depth is Compared to an unnecessarily long device, the inner volume of the variable depth recess when storing the sealing material (ie, at the maximum depth) is extremely large compared to the volume of the sealing material required for one sealing. It can be in an appropriate range that is not too large. As a result, it is less likely that the depth of the depression is greatly changed in the sealing operation, and the sealing operation can be performed in a short time. In addition, the amount of sealing material that can be used up once is supplied to the variable depth depression, and the sealing work that uses up the sealing material for each sealing work can reduce the waste of the sealing material. There is little change in moisture content, etc., and unnecessary adhesion of the sealing material to the device. Therefore, the sealed honeycomb structure can be efficiently manufactured at low cost.
　ここで、深さ可変窪みの最大深さＤｐは、ハニカム構造体の端面の面積をＡ０、ハニカム構造体の端面の封口されるべき開口面積をＡ１、所定の封口長さをＬとした時に、（Ａ１／Ａ０）Ｌ≦Ｄｐ＜２（Ａ１／Ａ０）Ｌを満たすことが好ましい。 Here, the maximum depth Dp of the depth-variable depression is defined such that the area of the end face of the honeycomb structure is A 0 , the opening area to be sealed of the end face of the honeycomb structure is A 1 , and the predetermined sealing length is L. sometimes, preferably satisfies (a 1 / a 0) L ≦ Dp <2 (a 1 / a 0) L.
　また、窪み形成部は、深さ固定窪みを有する本体部、及び、本体部の前記深さ固定窪みを覆うように設けられて前記可変窪みの内面を形成する弾性板を有し、本体部は、本体部の前記深さ固定窪みと弾性板との間に流体を供給可能な流路を備え、前記深さ調節部は、流体を、流路を介して本体部と弾性板との間に供給する事が好ましい。 Further, the recess forming portion has a main body portion having a depth fixing recess, and an elastic plate provided so as to cover the depth fixing recess of the main body portion and forming an inner surface of the variable recess. A flow path capable of supplying a fluid between the depth fixing depression of the main body portion and the elastic plate, and the depth adjusting portion passes the fluid between the main body portion and the elastic plate via the flow path. It is preferable to supply.
　この場合、流体は非圧縮性流体であることができる。 In this case, the fluid can be an incompressible fluid.
　また、この場合、本体部の深さ固定窪みの内面は多孔質体を含み、流路は多孔質体の気孔を含むことが好ましい。 In this case, it is preferable that the inner surface of the depth fixing recess of the main body portion includes a porous body, and the flow path includes pores of the porous body.
　一方、窪み形成部は、深さ固定窪みを有する本体部、及び、深さ固定窪み内に設けられて深さ可変窪みの底面を形成するピストン板を有し、深さ調節部がピストン板を移動させる態様も、本発明の好ましい態様の一つである。 On the other hand, the dent forming part has a main body part having a fixed depth dent, and a piston plate provided in the fixed depth dent to form the bottom surface of the variable depth dent, and the depth adjusting part has a piston plate. The mode of moving is also one of the preferred modes of the present invention.
　本発明に係るハニカム構造体の封口方法は、上述の封口装置の深さ可変窪みに封口材を貯留する工程と、深さ可変窪みの深さを減ずることにより封口材をハニカム構造体の複数の貫通孔に供給する工程と、を備える。 A method for sealing a honeycomb structure according to the present invention includes a step of storing a sealing material in the depth variable depression of the above-described sealing device, and a plurality of honeycomb structures by reducing the depth of the depth variable depression. Supplying to the through hole.
　本発明に係るハニカム構造体の他の封口方法は、深さ可変窪みの中に封口材を貯留する工程と、
　複数の貫通孔を有するハニカム構造体の端面を前記深さ可変窪みの上に配置する工程と、
　前記深さ可変窪みの深さをゼロに減ずることにより前記封口材を前記ハニカム構造体の前記複数の貫通孔の端部に所定の封口長さにわたって供給する工程と、を備え、
　前記貯留する工程において前記深さ可変窪みの深さは可変範囲内の最大深さとされ、前記最大深さが前記所定の封口長さの１０％以上かつ１００％未満である。
　本発明によれば、深さ可変窪み内に貯留した封口材をハニカム構造体の下端面から供給することにより、容易に封口作業が行える。また、最大深さとされた深さ可変窪み内に封口材を貯留し、封口時に深さ可変窪みの深さをゼロとするので、中途の深さに固定する必要が無く、貯留時や封口時の深さ可変窪みの深さの可変操作が簡単である。また、深さ可変窪みの最大深さが所定の封口長さの１０％以上かつ１００％未満である。これにより、最大深さが無用に長い装置に比して、封口材を貯留する時（すなわち、最大深さ時）の深さ可変窪みの内容積を、１回の封口に必要な封口材の体積に比して極端に大きすぎない適切な範囲にすることができる。これにより、封口作業に於いて窪みの深さを無駄に変化させることが少なくなり、封口作業を短時間で行うことができる。また、封口材を１回で使い切ると、封口材の無駄を無くすことができ、封口材の水分量等の変質等や、封口材の装置への不要な付着も少ない。したがって、封口されたハニカム構造体を低コストで効率よく製造することが出来る。 The other sealing method of the honeycomb structure according to the present invention includes a step of storing a sealing material in the depth variable recess,
A step of disposing an end face of the honeycomb structure having a plurality of through holes on the depth variable depression;
Supplying the sealing material to end portions of the plurality of through holes of the honeycomb structure over a predetermined sealing length by reducing the depth of the depth variable depression to zero, and
In the storing step, the depth of the depth variable recess is a maximum depth within a variable range, and the maximum depth is 10% or more and less than 100% of the predetermined sealing length.
According to the present invention, a sealing work can be easily performed by supplying the sealing material stored in the variable depth recess from the lower end surface of the honeycomb structure. In addition, the sealing material is stored in the maximum depth variable recess, and the depth of the variable depth recess is set to zero at the time of sealing. The variable operation of the depth variable recess is easy. Further, the maximum depth of the variable depth recess is 10% or more and less than 100% of the predetermined sealing length. As a result, the inner volume of the variable depth depression when storing the sealing material (that is, at the maximum depth) can be reduced as compared with a device having an unnecessarily long maximum depth. It can be in an appropriate range that is not extremely large compared to the volume. As a result, it is less likely that the depth of the depression is changed wastefully in the sealing operation, and the sealing operation can be performed in a short time. Further, if the sealing material is used up once, the sealing material can be wasted, and the sealing material can be prevented from being deteriorated and the sealing material is less likely to adhere to the device. Therefore, the sealed honeycomb structure can be efficiently manufactured at low cost.
　ここで、前記深さ可変窪みの最大深さＤｐは、前記ハニカム構造体の端面の面積をＡ０、前記ハニカム構造体の端面の封口されるべき開口面積をＡ１、前記所定の封口長さをＬとした時に、（Ａ１／Ａ０）Ｌ≦Ｄｐ＜２（Ａ１／Ａ０）Ｌを満たすことが好ましい。 Here, the maximum depth Dp of the depth-variable depression is defined such that the area of the end face of the honeycomb structure is A 0 , the opening area to be sealed of the end face of the honeycomb structure is A 1 , and the predetermined sealing length Is preferably (A 1 / A 0 ) L ≦ Dp <2 (A 1 / A 0 ) L.
　また、前記深さ可変窪みは、深さ固定窪みを有する本体部、及び、前記本体部の前記深さ固定窪みを覆うように設けられて前記深さ可変窪みの内面を形成する弾性板により形成され、
　前記本体部は、前記本体部の前記深さ固定窪みと前記弾性板との間に流体を供給可能な流路を備え、
　流体を、前記流路を介して前記本体部と前記弾性板との間に供給することにより前記深さ可変窪みの深さを減ずることが好ましい。 The variable depth recess is formed by a main body portion having a fixed depth recess, and an elastic plate that is provided so as to cover the fixed depth recess of the main body portion and forms an inner surface of the variable depth recess. And
The main body includes a flow path capable of supplying a fluid between the depth fixing recess of the main body and the elastic plate,
It is preferable to reduce the depth of the depth-variable recess by supplying fluid between the main body and the elastic plate via the flow path.
　本発明によれば、より容易に封口が可能な封口装置及び封口方法が提供される。 According to the present invention, a sealing device and a sealing method capable of more easily sealing are provided.
図１は、本発明の第一実施形態に係る封口装置の概略断面図である。FIG. 1 is a schematic cross-sectional view of a sealing device according to a first embodiment of the present invention. 図２は、図１の封口装置のＩＩ－ＩＩ矢視図である。FIG. 2 is a view taken along the line II-II of the sealing device of FIG. 図３の（ａ）は、図１の封口装置で用いるハニカム構造体の斜視図、図３の（ｂ）は、図３の（ａ）の部分拡大図である。3A is a perspective view of a honeycomb structure used in the sealing device of FIG. 1, and FIG. 3B is a partially enlarged view of FIG. 図４の（ａ）は、図１のマスクの斜視図、図４の（ｂ）は、図４の（ａ）の部分拡大図である。4 (a) is a perspective view of the mask of FIG. 1, and FIG. 4 (b) is a partially enlarged view of FIG. 4 (a). 図５の（ａ）は、図１の封口装置の動作を説明する部分断面図であり、図５の（ｂ）は、図５の（ａ）に続く部分断面図である。5A is a partial cross-sectional view for explaining the operation of the sealing device of FIG. 1, and FIG. 5B is a partial cross-sectional view subsequent to FIG. 図６の（ａ）は、図５の（ｂ）に続く部分断面図であり、図６の（ｂ）は、図６の（ａ）に続く部分断面図である。6A is a partial cross-sectional view subsequent to FIG. 5B, and FIG. 6B is a partial cross-sectional view subsequent to FIG. 6A. 図７の（ａ）は、図６の（ｂ）に続く部分断面図であり、図７の（ｂ）は、図７の（ａ）に続く部分断面図である。7A is a partial cross-sectional view subsequent to FIG. 6B, and FIG. 7B is a partial cross-sectional view subsequent to FIG. 7A. 図８の（ａ）は、図７の（ｂ）に続く部分断面図であり、図８の（ｂ）は、図７の（ａ）に続く部分断面図である。8A is a partial cross-sectional view subsequent to FIG. 7B, and FIG. 8B is a partial cross-sectional view subsequent to FIG. 7A. 図９は、本発明の第二実施形態に係る封口装置の概略断面図である。FIG. 9 is a schematic cross-sectional view of a sealing device according to a second embodiment of the present invention.
　本発明に係る封口装置の好適な実施形態について、図面を参照して説明する。なお、説明において、同一要素又は同一機能を有する要素には同一符号を用いることとし、重複する説明は省略する。 Preferred embodiments of the sealing device according to the present invention will be described with reference to the drawings. In the description, the same reference numerals are used for the same elements or elements having the same function, and a duplicate description is omitted.
　（第一実施形態）
　図１は、本実施形態の一例に係る封口装置１００の概略断面図であり、図２は図１のＩＩ－ＩＩ矢視図である。本実施形態に係る封口装置１００は、主として、本体部１０、弾性板２０、ポンプ５０、保持部８０を備える。 (First embodiment)
FIG. 1 is a schematic cross-sectional view of a sealing device 100 according to an example of this embodiment, and FIG. 2 is a view taken along the line II-II in FIG. The sealing device 100 according to the present embodiment mainly includes a main body unit 10, an elastic plate 20, a pump 50, and a holding unit 80.
　保持部８０は、ハニカム構造体７０を保持する保持具８１、及び保持具８１が接続された空気圧シリンダ８２を有する。 The holding unit 80 includes a holder 81 that holds the honeycomb structure 70 and a pneumatic cylinder 82 to which the holder 81 is connected.
　本実施形態で用いる一例のハニカム構造体７０は、図１、及び、図３の（ａ）に示すように、多数の貫通孔７０ａが略平行に配置された円柱体である。貫通孔７０ａの断面形状は、図３の（ｂ）に示すように正方形である。これらの複数の貫通孔７０ａは、ハニカム構造体７０において、端面から見て、正方形配置、すなわち、貫通孔７０ａの中心軸が、正方形の頂点にそれぞれ位置するように配置されている。貫通孔７０ａの断面の正方形のサイズは、例えば、一辺０．８～２．５ｍｍとすることができる。 An example of the honeycomb structure 70 used in the present embodiment is a cylindrical body in which a large number of through holes 70a are arranged substantially in parallel as shown in FIG. 1 and FIG. The cross-sectional shape of the through hole 70a is a square as shown in FIG. The plurality of through holes 70a are arranged in a square arrangement in the honeycomb structure 70, that is, such that the central axis of the through hole 70a is located at the apex of the square, respectively. The square size of the cross section of the through hole 70a can be set to, for example, 0.8 to 2.5 mm on a side.
　また、ハニカム構造体７０の貫通孔７０ａが延びる方向の長さは特に限定されないが、例えば、４０～３５０ｍｍとすることができる。また、ハニカム構造体７０の外径も特に限定されないが、例えば、１００～３２０ｍｍとすることできる。 Further, the length of the honeycomb structure 70 in the direction in which the through holes 70a extend is not particularly limited, but may be 40 to 350 mm, for example. Further, the outer diameter of the honeycomb structure 70 is not particularly limited, but may be, for example, 100 to 320 mm.
　ハニカム構造体７０の材料は特に限定されないが、高温耐性の観点から、セラミクス材料が好ましい。例えば、アルミナ、シリカ、ムライト、コーディエライト、ガラス、チタン酸アルミニウム等の酸化物、シリコンカーバイド、窒化珪素、金属等が挙げられる。なお、チタン酸アルミニウムは、さらに、マグネシウム及び／又はケイ素を含むことができる。このような、ハニカム構造体７０は通常多孔質である。 The material of the honeycomb structure 70 is not particularly limited, but a ceramic material is preferable from the viewpoint of high temperature resistance. Examples thereof include alumina, silica, mullite, cordierite, glass, oxides such as aluminum titanate, silicon carbide, silicon nitride, and metal. The aluminum titanate can further contain magnesium and / or silicon. Such a honeycomb structure 70 is usually porous.
　また、ハニカム構造体７０は、後で焼成することにより上述のようなセラミック材料となるグリーン成形体（未焼成成形体）であってもよい。グリーン成形体は、セラミクス原料である無機化合物源粉末、及び、メチルセルロース等の有機バインダ、及び、必要に応じて添加される添加剤を含む。 Further, the honeycomb structure 70 may be a green molded body (unfired molded body) that becomes a ceramic material as described above by firing later. A green molded object contains the inorganic compound source powder which is a ceramic raw material, organic binders, such as methylcellulose, and the additive added as needed.
　例えば、チタン酸アルミニウムのグリーン成形体の場合、無機化合物源粉末は、αアルミナ粉等のアルミニウム源粉末、及び、アナターゼ型やルチル型のチタニア粉末等のチタニウム源粉末を含み、必要に応じて、さらに、マグネシア粉末やマグネシアスピネル粉末等のマグネシウム源粉末及び／又は、酸化ケイ素粉末やガラスフリット等のケイ素源粉末を含むことができる。 For example, in the case of a green molded body of aluminum titanate, the inorganic compound source powder includes an aluminum source powder such as α-alumina powder, and a titanium source powder such as anatase-type or rutile-type titania powder. Furthermore, magnesium source powders such as magnesia powder and magnesia spinel powder and / or silicon source powders such as silicon oxide powder and glass frit can be included.
　有機バインダとしては、メチルセルロース、カルボキシルメチルセルロース、ヒドロキシアルキルメチルセルロース、ナトリウムカルボキシルメチルセルロースなどのセルロース類；ポリビニルアルコールなどのアルコール類；リグニンスルホン酸塩を例示できる。 Examples of the organic binder include celluloses such as methylcellulose, carboxymethylcellulose, hydroxyalkylmethylcellulose, and sodium carboxymethylcellulose; alcohols such as polyvinyl alcohol; and lignin sulfonate.
　添加物としては、例えば、造孔剤、潤滑剤および可塑剤、分散剤、溶媒が挙げられる。 Examples of additives include a pore-forming agent, a lubricant and a plasticizer, a dispersant, and a solvent.
　造孔剤としては、グラファイト等の炭素材；ポリエチレン、ポリプロピレン、ポリメタクリル酸メチル等の樹脂類；でんぷん、ナッツ殻、クルミ殻、コーンなどの植物材料；氷；およびドライアイス等などが挙げられる。 Examples of the pore former include carbon materials such as graphite; resins such as polyethylene, polypropylene, and polymethyl methacrylate; plant materials such as starch, nut shells, walnut shells, and corn; ice; and dry ice.
　潤滑剤および可塑剤としては、グリセリンなどのアルコール類；カプリル酸、ラウリン酸、パルミチン酸、アラキジン酸、オレイン酸、ステアリン酸などの高級脂肪酸；ステアリン酸Ａｌなどのステアリン酸金属塩；ポリオキシアルキレンアルキルエーテルなどが挙げられる。 Lubricants and plasticizers include alcohols such as glycerol; higher fatty acids such as caprylic acid, lauric acid, palmitic acid, arachidic acid, oleic acid and stearic acid; stearic acid metal salts such as Al stearate; polyoxyalkylene alkyl Examples include ether.
　分散剤としては、たとえば、硝酸、塩酸、硫酸などの無機酸；シュウ酸、クエン酸、酢酸、リンゴ酸、乳酸などの有機酸；メタノール、エタノール、プロパノールなどのアルコール類；ポリカルボン酸アンモニウムなどの界面活性剤などが挙げられる。 Examples of the dispersant include inorganic acids such as nitric acid, hydrochloric acid and sulfuric acid; organic acids such as oxalic acid, citric acid, acetic acid, malic acid and lactic acid; alcohols such as methanol, ethanol and propanol; ammonium polycarboxylate Surfactant etc. are mentioned.
　溶媒としては、たとえば、メタノール、エタノール、ブタノール、プロパノールなどのアルコール類；プロピレングリコール、ポリプロピレングリコール、エチレングリコールなどのグリコール類；および水などを用いることができる。 As the solvent, for example, alcohols such as methanol, ethanol, butanol and propanol; glycols such as propylene glycol, polypropylene glycol and ethylene glycol; and water can be used.
　図１に戻って、保持具８１は、ハニカム構造体７０を、貫通孔７０ａの下端面７０ｄ、すなわち、複数の貫通孔７０ａの開口面が下方を向くように保持し、下端面を後述する深さ可変窪み２０ｄの上に保持する。 Returning to FIG. 1, the holder 81 holds the honeycomb structure 70 so that the lower end surface 70 d of the through hole 70 a, that is, the opening surfaces of the plurality of through holes 70 a face downward, and the lower end surface is a depth described later. It is held on the variable recess 20d.
　空気圧シリンダ８２は、上下方向に延びるシリンダ８２ａと、シリンダ８２ａ内に設けられたピストン８２ｂとを有し、外部から供給する圧力を調整することによりピストン８２ｂの上下両側での圧力を調節可能となっている。そして、これにより空気圧シリンダ８２は、保持具８１を、ハニカム構造体７０と後述する弾性板２０とが近づく方向及びこれらが互いに離れる方向にそれぞれ移動可能である。また、空気圧シリンダ８２は、ピストン８２ｂの前後のガスの供給圧力に応じて保持具８１を下方に所定の力で押圧することにより、ハニカム構造体７０を後述するマスク１７０に対して密着させることができる。さらに、空気圧シリンダ８２は、ピストンの前後の圧力を開放することにより、保持具８１が上下方向に自由に移動することを許可することもできる。すなわち、保持部８０は、保持具８１が保持したハニカム構造体７０を上方向に自由に移動可能とする状態と、ハニカム構造体７０を本体部１０に対して固定する状態とを切替え可能である。 The pneumatic cylinder 82 includes a cylinder 82a extending in the vertical direction and a piston 82b provided in the cylinder 82a. By adjusting the pressure supplied from the outside, the pressure on both the upper and lower sides of the piston 82b can be adjusted. ing. As a result, the pneumatic cylinder 82 can move the holder 81 in a direction in which the honeycomb structure 70 and an elastic plate 20 described later approach each other and in a direction in which they move away from each other. In addition, the pneumatic cylinder 82 allows the honeycomb structure 70 to be in close contact with the mask 170 described later by pressing the holder 81 downward with a predetermined force in accordance with the gas supply pressure before and after the piston 82b. it can. Furthermore, the pneumatic cylinder 82 can also permit the holder 81 to move freely in the vertical direction by releasing the pressure before and after the piston. That is, the holding unit 80 can switch between a state in which the honeycomb structure 70 held by the holder 81 can freely move upward and a state in which the honeycomb structure 70 is fixed to the main body 10. .
　保持部８０の下には、本体部１０が設けられている。本体部１０は、剛性材料から形成されている。剛性材料としては、ステンレス等の金属や、繊維強化プラスチック等のポリマー材料が挙げられる。本体部１０の上面には、側面１０ｂ及び底面１０ｃを有する深さ固定窪み１０ｄが形成されている。本実施形態では、深さ固定窪み１０ｄの形状は、図１及び図２に示すように、円柱状とされている。そして、本体部１０の上面１０ａに対して、深さ固定窪み１０ｄの側面１０ｂが垂直、かつ、底面１０ｃが平行とされている。 The main body 10 is provided under the holding unit 80. The main body 10 is made of a rigid material. Examples of the rigid material include metals such as stainless steel and polymer materials such as fiber reinforced plastic. A depth fixing recess 10d having a side surface 10b and a bottom surface 10c is formed on the upper surface of the main body 10. In the present embodiment, the shape of the fixed depth recess 10d is a columnar shape as shown in FIGS. The side surface 10b of the depth fixing recess 10d is perpendicular to the upper surface 10a of the main body 10 and the bottom surface 10c is parallel to the upper surface 10a.
　本体部１０における深さ固定窪み１０ｄの内面は、多孔質体１０ｐから形成されている。さらに、多孔質体１０ｐには連通路１０ｅが接続している。なお、本実施形態では、連通路１０ｅは多孔質体１０ｐの底面１０ｃを形成する部分に接続しているが、多孔質体１０ｐの側面１０ｂを形成している部分に開口してもよい。多孔質体は連通気孔を有すれば特に限定されないが、例えば、金属粒焼結体等が挙げられる。 The inner surface of the fixed depth recess 10d in the main body 10 is formed of a porous body 10p. Furthermore, the communication path 10e is connected to the porous body 10p. In the present embodiment, the communication passage 10e is connected to a portion forming the bottom surface 10c of the porous body 10p, but may be opened to a portion forming the side surface 10b of the porous body 10p. Although a porous body will not be specifically limited if it has a continuous ventilation hole, For example, a metal grain sintered compact etc. are mentioned.
　連通路１０ｅには、接続パイプ１４を介してポンプ（深さ調節部）５０が接続されている。ポンプ５０は、シリンダ５１、シリンダ５１内に配置されたピストン５３、及び、ピストン５３に接続されたピストンロッド５４を備える。ピストンロッド５４には、ピストンロッド５４を軸方向に往復移動させるモータ５５が接続されている。なお、ピストンロッド５４を手動で動かしてもよい。 A pump (depth adjusting unit) 50 is connected to the communication path 10e through a connection pipe 14. The pump 50 includes a cylinder 51, a piston 53 disposed in the cylinder 51, and a piston rod 54 connected to the piston 53. A motor 55 that reciprocates the piston rod 54 in the axial direction is connected to the piston rod 54. The piston rod 54 may be moved manually.
　弾性板２０は、深さ固定窪み１０ｄの開口面を覆うように、本体部１０の上面１０ａ上に、配置されている。弾性板２０は、弾性を有し、容易に変形しうる。図１の深さ固定窪み１０ｄの左側に図示されているように、弾性板２０が、深さ固定窪み１０ｄの内表面に沿って配置されることにより、底面２０ｃ及び側面２０ｂを有する深さ可変窪み２０ｄが形成される。底面２０ｃは、ハニカム構造体７０の下端面７０ｄと対向配置され、ハニカム構造体７０の下端面７０ｄの外形と略同じ形状をしている。本実施形態では、弾性板２０及び本体部１０の深さ固定窪み１０ｄが窪み形成部９９を構成する。 The elastic plate 20 is disposed on the upper surface 10a of the main body 10 so as to cover the opening surface of the fixed depth recess 10d. The elastic plate 20 has elasticity and can be easily deformed. As shown on the left side of the depth fixing recess 10d in FIG. 1, the elastic plate 20 is disposed along the inner surface of the depth fixing recess 10d, thereby changing the depth having the bottom surface 20c and the side surface 20b. A recess 20d is formed. The bottom surface 20 c is disposed to face the lower end surface 70 d of the honeycomb structure 70 and has substantially the same shape as the outer shape of the lower end surface 70 d of the honeycomb structure 70. In the present embodiment, the elastic plate 20 and the depth fixing recess 10 d of the main body portion 10 constitute the recess forming portion 99.
　弾性板２０としては、ゴム板が好ましい。ゴムとしては、天然ゴムや、スチレンブタジエンゴム、ブタジエンゴム、ブチルゴム、エチレンプロピレンゴム、ニトリルゴム、クロロプレンゴム、ふっ素ゴム、シリコーンゴム、ウレタンゴム等の合成ゴムが挙げられる。弾性板２０の厚みは特に限定されないが、例えば、０．３～３．０ｍｍとすることができる。 As the elastic plate 20, a rubber plate is preferable. Examples of the rubber include natural rubber, and synthetic rubber such as styrene butadiene rubber, butadiene rubber, butyl rubber, ethylene propylene rubber, nitrile rubber, chloroprene rubber, fluorine rubber, silicone rubber, and urethane rubber. The thickness of the elastic plate 20 is not particularly limited, but can be, for example, 0.3 to 3.0 mm.
　弾性板２０は、リング部材２５、及び、ボルト３１により本体部１０に固定されている。リング部材２５は、本体部１０の深さ固定窪み１０ｄに対応する位置に開口２５ａを有し、これにより環状形状をなしている。そして、リング部材２５は、弾性板２０における中央部（深さ固定窪み１０ｄとの対向部）が露出するように弾性板２０上に配置されている。これにより、弾性板２０の環状の周辺部が、本体部１０とリング部材２５とにより挟まれている。リング部材２５及び弾性板２０には貫通孔ｈがそれぞれ形成され、本体部１０には、これら貫通孔ｈに対応するねじ孔ｊが形成されている。そして、ボルト３１がこれらの貫通孔ｈを貫通して配置され、ねじ孔ｊにねじ込まれて固定されることにより、本体部１０の上面１０ａにおける深さ固定窪み１０ｄのまわりの部分に、弾性板２０の周辺部が密着して固定されている。 The elastic plate 20 is fixed to the main body 10 by a ring member 25 and a bolt 31. The ring member 25 has an opening 25a at a position corresponding to the depth fixing recess 10d of the main body portion 10, thereby forming an annular shape. And the ring member 25 is arrange | positioned on the elastic board 20 so that the center part (opposite part with depth fixed hollow 10d) in the elastic board 20 may be exposed. Thereby, the annular peripheral portion of the elastic plate 20 is sandwiched between the main body 10 and the ring member 25. Through-holes h are formed in the ring member 25 and the elastic plate 20, and screw holes j corresponding to the through-holes h are formed in the main body portion 10. The bolts 31 are disposed through the through holes h, and are screwed into the screw holes j to be fixed. As a result, an elastic plate is provided on the upper surface 10a of the main body 10 around the depth fixing recess 10d. The peripheral part of 20 is closely attached and fixed.
　図１及び図２に示すように、リング部材２５の開口２５ａの内径は、本体部１０の深さ固定窪み１０ｄの内径よりも大きくされていることが好ましい。 As shown in FIGS. 1 and 2, the inner diameter of the opening 25 a of the ring member 25 is preferably larger than the inner diameter of the depth fixing recess 10 d of the main body 10.
　本実施形態では、弾性板２０とピストン５３との間には、本体部１０、接続パイプ１４、及び、シリンダ５１により形成される閉鎖空間Ｖが形成され、閉鎖空間Ｖ内には、流体ＦＬが充填されている。流体ＦＬは、特に限定されない。流体ＦＬの一つの例は、非圧縮性流体すなわち液体である。液体の例はスピンドルオイル等である。また、流体ＦＬの他の例は、圧縮性流体すなわちガスである。ガスの例は空気、窒素である。そして、ピストン５３を移動させることにより、本体部１０の連通路１０ｅ及び多孔質体１０ｐの気孔から形成される流路を介して深さ固定窪み１０ｄ内から流体ＦＬを排出することができ、また、深さ固定窪み１０ｄ内に流体ＦＬを供給することが出来る。これにより、深さ可変窪み２０ｄの底面２０ｃを深さ固定窪み１０ｄの底面１０ｃに接触した状態にすることができる一方、深さ可変窪み２０ｄの底面２０ｃを深さ固定窪み１０ｄの底面１０ｃから遠ざけてハニカム構造体７０の下端面７０ｄに対して近づけたりすることが出来る。 In the present embodiment, a closed space V formed by the main body 10, the connection pipe 14, and the cylinder 51 is formed between the elastic plate 20 and the piston 53, and the fluid FL is contained in the closed space V. Filled. The fluid FL is not particularly limited. One example of the fluid FL is an incompressible fluid or liquid. An example of the liquid is spindle oil or the like. Another example of the fluid FL is a compressible fluid or gas. Examples of gas are air and nitrogen. Then, by moving the piston 53, the fluid FL can be discharged from the depth fixing recess 10d through the flow path formed by the communication passage 10e of the main body 10 and the pores of the porous body 10p. The fluid FL can be supplied into the fixed depth recess 10d. Thus, the bottom surface 20c of the variable depth recess 20d can be brought into contact with the bottom surface 10c of the fixed depth recess 10d, while the bottom surface 20c of the variable depth recess 20d is kept away from the bottom surface 10c of the fixed depth recess 10d. Thus, it can be brought closer to the lower end surface 70d of the honeycomb structure 70.
　そして、深さ可変窪み２０ｄの底面２０ｃが深さ固定窪み１０ｄの底面１０ｃに接触した状態、すなわち、深さ可変窪み２０ｄが最も深い状態における深さ可変窪み２０ｄの深さ（以下、最大深さと呼ぶことがある）Ｄｐは、後述する貫通孔７０ａの端部の封口長さＬの設定値に対して、１０％以上、１００％未満とされ、好ましくは２０％以上、９０％未満、より好ましくは３０％以上、８０％未満、さらに好ましくは３５％以上、７０％未満とされている。ここで、封口長さＬとは、図７の（ａ）に示すように、封口材により形成する封口部７０ｐの貫通孔の軸方向における長さの平均値である。 Then, when the bottom surface 20c of the variable depth recess 20d is in contact with the bottom surface 10c of the fixed depth recess 10d, that is, the depth of the variable depth recess 20d (hereinafter referred to as the maximum depth). Dp) may be 10% or more and less than 100%, preferably 20% or more and less than 90%, more preferably with respect to a set value of the sealing length L at the end of a through hole 70a to be described later Is 30% or more and less than 80%, more preferably 35% or more and less than 70%. Here, the sealing length L is an average value of the lengths in the axial direction of the through holes of the sealing portion 70p formed by the sealing material, as shown in FIG.
　図１に戻って、深さ可変窪み２０ｄの最大深さＤｐは、ハニカム構造体７０の下端面７０ｄの面積をＡ０、ハニカム構造体７０の下端面７０ｄの封口されるべき開口面積をＡ１、封口長さをＬとした時に、（Ａ１／Ａ０）Ｌ≦Ｄｐ＜２（Ａ１／Ａ０）Ｌを満たすことが好ましい。ここで、Ｄｐの下限値は、封口されるべき開口面積Ａ１を所定の封口長さＬに亘って封口するのに必要最小限の封口材の体積Ｖ＝Ａ１Ｌに対応し、Ｄｐの上限値はこの体積Ｖの２倍に対応する。深さ可変窪みに２０ｄに余剰の体積を確保する場合があるのは、封口工程の後でも、封口材の一部が装置に付着したままとなり、予め深さ可変窪み２０ｄに仕込んだ封口材を１００％利用できない場合があるからである。深さ可変窪み２０ｄの最大深さＤｐは、（Ａ１／Ａ０）Ｌ≦Ｄｐ≦１．５（Ａ１／Ａ０）Ｌを満たすことが好ましく、（Ａ１／Ａ０）Ｌ≦Ｄｐ≦１．３（Ａ１／Ａ０）Ｌを満たすことがより好ましい。
　具体的には、例えば、封口長さＬは、０．５～３０ｍｍであり、好ましくは、０．５～１０ｍｍである。通常１つの端面の封口工程では、全貫通孔７０ａの内の概ね半分の貫通孔の開口を封口するため、封口されるべき開口面積Ａ１は、全貫通孔７０ａの総開口面積Ａ３の約半分となる場合が多い。封口されるべき面積Ａ１と下端面７０ｄの面積Ａ０との関係に関しては、例えば、（Ａ１／Ａ０）は、３０～４５％程度、典型的には、３５％である。 Returning to FIG. 1, the maximum depth Dp of the depth variable recess 20d is, A 0 the area of the lower end surface 70d of the honeycomb structure 70, the opening area to be sealed in the lower end surface 70d of the honeycomb structure 70 A 1 When the sealing length is L, it is preferable to satisfy (A 1 / A 0 ) L ≦ Dp <2 (A 1 / A 0 ) L. Here, the lower limit value of Dp corresponds to the volume V = A 1 L of the minimum sealing material necessary to seal the opening area A 1 to be sealed over a predetermined sealing length L, and Dp The upper limit value corresponds to twice this volume V. There is a case where an excessive volume is secured in the depth variable recess 20d because a part of the sealing material remains attached to the device even after the sealing step, and the sealing material previously charged in the depth variable recess 20d is removed. This is because it may not be 100% available. Maximum depth Dp of the depth variable recess 20d is, (A 1 / A 0) is preferable to satisfy the L ≦ Dp ≦ 1.5 (A 1 / A 0) L, (A 1 / A 0) L ≦ Dp It is more preferable to satisfy ≦ 1.3 (A 1 / A 0 ) L.
Specifically, for example, the sealing length L is 0.5 to 30 mm, and preferably 0.5 to 10 mm. In normal one end face of the sealing step, for sealing a generally open half of the through hole of the through-and-through hole 70a, the opening area A 1 to be sealed is about the total opening area A 3 of the total through-hole 70a Often halved. Regarding the relationship between the area A 1 and the area A 0 of the lower end surface 70d to be sealed, for example, (A 1 / A 0) is about 30 to 45%, typically 35%.
　マスク１７０は、弾性板２０上におけるリング部材２５の開口２５ａ内に配置されるものである。マスク１７０の材料は特に限定されず、例えば、金属や樹脂が挙げられる。 The mask 170 is disposed in the opening 25 a of the ring member 25 on the elastic plate 20. The material of the mask 170 is not specifically limited, For example, a metal and resin are mentioned.
　図４の（ａ）に、本実施形態で用いるマスク１７０の一例を示す。マスク１７０は、円形の板状部材であり、厚み方向に伸びる多数の貫通孔１７０ａを有する。貫通孔１７０ａの断面形状は、図４の（ｂ）に示すように、ハニカム構造体７０の貫通孔７０ａ（図３の（ｂ）参照）に対応する正方形である。これらの複数の貫通孔１７０ａは、図４の（ｂ）に示すように、千鳥配置されており、各貫通孔１７０ａは、図３の（ｂ）の正方配置された複数の貫通孔７０ａのうち、互いに上下左右に隣接しない関係にある複数の貫通孔７０ａｉのみに対向して配置される。なお、マスク１７０の貫通孔１７０ａの位置決めを容易にすべく、マスク１７０には、オリエンテーションフラット１７０ｂが形成され、これに対応してリング部材２５にもオリエンテーションフラットに対応する突起２５ｂを設けてもよい。図１に示すように、マスク１７０の外径は、本体部１０の深さ固定窪み１０ｄの内径よりも大きくされていることが好ましい。 FIG. 4A shows an example of the mask 170 used in this embodiment. The mask 170 is a circular plate-like member and has a large number of through-holes 170a extending in the thickness direction. The cross-sectional shape of the through hole 170a is a square corresponding to the through hole 70a (see FIG. 3B) of the honeycomb structure 70, as shown in FIG. 4B. The plurality of through holes 170a are arranged in a staggered manner as shown in FIG. 4B, and each through hole 170a is formed of the plurality of through holes 70a arranged in a square shape in FIG. 3B. These are disposed to face only the plurality of through holes 70ai that are not adjacent to each other in the vertical and horizontal directions. In order to facilitate positioning of the through hole 170a of the mask 170, the mask 170 is formed with an orientation flat 170b, and the ring member 25 may be provided with a projection 25b corresponding to the orientation flat correspondingly. . As shown in FIG. 1, the outer diameter of the mask 170 is preferably larger than the inner diameter of the depth fixing recess 10 d of the main body 10.
　なお、図１に示すように、本体部１０には、超音波振動器等の加振器１４０が設けられていることが好ましい。 In addition, as shown in FIG. 1, it is preferable that the main body 10 is provided with a vibrator 140 such as an ultrasonic vibrator.
　（封口方法）
　つづいて、上述の封口装置１００を使用したハニカム構造体の封口方法について説明する。まず、図１の状態から、予め、空気圧シリンダ８２を駆動して、ハニカム構造体７０を保持する保持具８１上方に引き上げておくと共に、マスク１７０を弾性板２０上から外しておく。次に、ポンプ５０のピストン５３を下方に引くことにより、本体部１０の深さ固定窪み１０ｄから流路を介して流体ＦＬを下方に排出させる。これにより、図５の（ａ）に示すように、弾性板２０が変形して深さ固定窪み１０ｄの側面１０ｂ及び底面１０ｃに密着し、これによって、弾性板２０による深さ可変窪み２０ｄが形成する。ここで、深さ可変窪み２０ｄの深さは可変できる範囲内における最大深さであり、この最大深さＤｐは、封口長さＬに対して、上述の所定の値となっている。 (Sealing method)
Next, a method for sealing a honeycomb structure using the above-described sealing device 100 will be described. First, from the state of FIG. 1, the pneumatic cylinder 82 is driven in advance and pulled up above the holder 81 that holds the honeycomb structure 70, and the mask 170 is removed from the elastic plate 20. Next, by pulling the piston 53 of the pump 50 downward, the fluid FL is discharged downward from the depth fixing recess 10d of the main body 10 through the flow path. As a result, as shown in FIG. 5A, the elastic plate 20 is deformed and is brought into close contact with the side surface 10b and the bottom surface 10c of the depth fixing recess 10d, thereby forming the variable depth recess 20d by the elastic plate 20. To do. Here, the depth of the depth variable recess 20d is the maximum depth within a variable range, and the maximum depth Dp is the above-described predetermined value with respect to the sealing length L.
　続いて、図５の（ｂ）に示すように、弾性板２０の深さ可変窪み２０ｄ内に封口材１３０を供給し、封口材を貯留させる。必要に応じて、加振器１４０を駆動することにより、封口材１３０の表面の平坦化及び脱泡を促す。 Subsequently, as shown in FIG. 5B, the sealing material 130 is supplied into the depth variable recess 20d of the elastic plate 20, and the sealing material is stored. If necessary, the surface of the sealing material 130 is flattened and defoamed by driving the vibrator 140.
　（封口材）
　封口材１３０は、ハニカム構造体７０の貫通孔７０ａの端部を閉鎖できるものであれば特に限定されないが、液状であることが好ましい。例えば、封口材として、セラミクス材料又はセラミクス原料と、バインダと、潤滑剤と、造孔剤と、溶媒とを含むスラリーが例示できる。 (Sealing material)
The sealing material 130 is not particularly limited as long as it can close the end of the through hole 70a of the honeycomb structure 70, but is preferably liquid. For example, as the sealing material, a slurry containing a ceramic material or a ceramic raw material, a binder, a lubricant, a pore former, and a solvent can be exemplified.
　セラミクス材料としては、上述のハニカム構造体の構成材料や、その原料あるいはそれらの混合物が挙げられる。セラミクス材料や原料の使用量は、例えば、スラリー１００重量部に対して５０～８５重量部とすることができる。 Examples of the ceramic material include the constituent material of the above-described honeycomb structure, the raw material thereof, or a mixture thereof. The amount of the ceramic material or raw material used can be, for example, 50 to 85 parts by weight with respect to 100 parts by weight of the slurry.
　バインダとしては、メチルセルロース、カルボキシルメチルセルロース、ヒドロキシアルキルメチルセルロース、ナトリウムカルボキシルメチルセルロースなどのセルロース類；ポリビニルアルコールなどのアルコール類；リグニンスルホン酸塩等の有機バインダを例示できる。バインダの使用量は、例えば、スラリー１００重量部に対して０～３０重量部とすることができる。 Examples of the binder include celluloses such as methylcellulose, carboxymethylcellulose, hydroxyalkylmethylcellulose, and sodium carboxymethylcellulose; alcohols such as polyvinyl alcohol; and organic binders such as lignin sulfonate. The amount of binder used can be, for example, 0 to 30 parts by weight with respect to 100 parts by weight of the slurry.
　潤滑剤としては、グリセリンなどのアルコール類；カプリル酸、ラウリン酸、パルミチン酸、アラキジン酸、オレイン酸、ステアリン酸などの高級脂肪酸；ステアリン酸アルミニウムなどのステアリン酸金属塩などが挙げられる。潤滑剤の使用量は、例えば、スラリー１００重量部に対して０．５～２０重量部とすることができる。 Lubricants include alcohols such as glycerin; higher fatty acids such as caprylic acid, lauric acid, palmitic acid, arachidic acid, oleic acid and stearic acid; and stearic acid metal salts such as aluminum stearate. The amount of lubricant used can be, for example, 0.5 to 20 parts by weight with respect to 100 parts by weight of the slurry.
　造孔剤としては、グラファイト等の炭素材；ポリエチレン、ポリプロピレン、ポリメタクリル酸メチル等の樹脂類；でんぷん、ナッツ殻、クルミ殻、コーンなどの植物材料；氷；およびドライアイス等などが挙げられる。造孔剤の使用量は、例えば、スラリー１００重量部に対して０～２０重量部とすることができる。 Examples of the pore former include carbon materials such as graphite; resins such as polyethylene, polypropylene, and polymethyl methacrylate; plant materials such as starch, nut shells, walnut shells, and corn; ice; and dry ice. The amount of pore-forming agent used can be, for example, 0 to 20 parts by weight with respect to 100 parts by weight of the slurry.
　溶媒としては、たとえば、メタノール、エタノール、ブタノール、プロパノールなどのアルコール類；プロピレングリコール、ポリプロピレングリコール、エチレングリコールなどのグリコール類；および水などを用いることができる。なかでも、水が好ましく、不純物が少ない点で、より好ましくはイオン交換水が用いられる。溶媒の使用量は、例えば、スラリー１００重量部に対して１０～４０重量部とすることができる。 As the solvent, for example, alcohols such as methanol, ethanol, butanol and propanol; glycols such as propylene glycol, polypropylene glycol and ethylene glycol; and water can be used. Of these, water is preferable, and ion-exchanged water is more preferably used from the viewpoint of few impurities. The amount of the solvent used can be, for example, 10 to 40 parts by weight with respect to 100 parts by weight of the slurry.
　封口材１３０の量は特に限定されないが、液面が最大深さＤｐ以下となる量であればよい。具体的には、例えば、ハニカム構造体７０の一方の端面の所望の貫通孔７０ａの端部全てに所望の封口長さＬに亘って封口材をそれぞれ充填するために必要な量Ｖの１．０～１．２倍程度であればよい。 The amount of the sealing material 130 is not particularly limited as long as the liquid level is the maximum depth Dp or less. Specifically, for example, an amount V of 1. required for filling a sealing material over a desired sealing length L in all ends of a desired through-hole 70a on one end surface of the honeycomb structure 70, respectively. It may be about 0 to 1.2 times.
　続いて、図６の（ａ）に示すように、深さ可変窪み２０ｄと対向するように弾性板２０上にマスク１７０をセットし、次いで、空気圧シリンダ８２により保持具８１を下方に移動させてハニカム構造体７０の下端面７０ｄをマスク１７０に接触させることにより、ハニカム構造体７０の一部の貫通孔７０ａと、マスク１７０の貫通孔１７０ａとを連通させ、さらに、空気圧シリンダ８２により保持具８１を下方に押圧し、ハニカム構造体７０をマスク１７０及び本体部１０に対して固定する。 Subsequently, as shown in FIG. 6A, the mask 170 is set on the elastic plate 20 so as to face the depth variable recess 20 d, and then the holding tool 81 is moved downward by the pneumatic cylinder 82. The lower end surface 70d of the honeycomb structure 70 is brought into contact with the mask 170, whereby a part of the through holes 70a of the honeycomb structure 70 and the through holes 170a of the mask 170 are communicated. Is pressed downward to fix the honeycomb structure 70 to the mask 170 and the main body 10.
　次いで、ポンプ５０のピストンを上方に移動させることにより、深さ固定窪み１０ｄと弾性板２０との間に流路を介して流体ＦＬを供給し、これによって、図６の（ｂ）に示すように、弾性板２０の底面２０ｃがマスク１７０に向かって移動する、すなわち、深さ可変窪み２０ｄの深さが減ずる。この工程は、図７の（ａ）に示すように、弾性板２０がマスク１７０に接触し、弾性板２０の変形が解消する、すなわち、深さ可変窪み２０ｄの深さが０となるまで行なう。 Next, by moving the piston of the pump 50 upward, the fluid FL is supplied between the depth fixing recess 10d and the elastic plate 20 through the flow path, and as shown in FIG. Further, the bottom surface 20c of the elastic plate 20 moves toward the mask 170, that is, the depth of the variable depth recess 20d is reduced. As shown in FIG. 7A, this process is performed until the elastic plate 20 comes into contact with the mask 170 and the deformation of the elastic plate 20 is eliminated, that is, the depth of the variable depth recess 20d becomes zero. .
　これにより、封口材１３０がマスク１７０の貫通孔１７０ａを介して、ハニカム構造体７０の一部の貫通孔７０ａ内に封口長さＬに亘って供給され、封口部７０ｐが形成する。 Thereby, the sealing material 130 is supplied over the sealing length L into the partial through-hole 70a of the honeycomb structure 70 through the through-hole 170a of the mask 170, and the sealing part 70p is formed.
　続いて、空気圧シリンダ８２によるハニカム構造体７０の下方向への押圧を停止してハニカム構造体７０が上方に自由に移動できるようした後、ピストン５３をさらに上昇させ弾性板２０と本体部１０との間にさらに流体ＦＬを供給する。これにより、図７の（ｂ）に示すように、弾性板２０は、上方向に凸状に変形し、マスク１７０及びハニカム構造体７０が上方に移動する。このとき、凸状に変形する弾性板２０の周辺部はマスク１７０から離れるので、これにより、マスク１７０及びハニカム構造体７０を、本体部１０から容易に引き離すことが出来る。 Subsequently, after the downward pressing of the honeycomb structure 70 by the pneumatic cylinder 82 is stopped so that the honeycomb structure 70 can freely move upward, the piston 53 is further raised to move the elastic plate 20 and the main body portion 10 together. Further, fluid FL is supplied. Thereby, as shown in FIG. 7B, the elastic plate 20 is deformed in a convex shape upward, and the mask 170 and the honeycomb structure 70 move upward. At this time, since the peripheral portion of the elastic plate 20 deformed into a convex shape is separated from the mask 170, the mask 170 and the honeycomb structure 70 can be easily separated from the main body portion 10.
　続いて、ハニカム構造体７０を保持具８１から外した後、天地をひっくり返したうえで再びハニカム構造体７０を保持具８１に保持する。次いで、マスク１７０と貫通孔１７０ａの配置が正反対の千鳥配置とされたマスク１７０’を用いて、同様の操作を行なう。これにより、図８の（ａ）に示すように、残りの貫通孔７０ａの他端側が封口材で封口され、封口部７０ｐが形成する。続いて、上述と同様にして弾性板２０を上に凸状に変形させることにより、マスク１７０’及びハニカム構造体７０を容易に本体部１０及び弾性板２０から引き離すことが出来る。 Subsequently, after removing the honeycomb structure 70 from the holder 81, the top and bottom are turned over, and the honeycomb structure 70 is again held by the holder 81. Next, the same operation is performed using a mask 170 ′ in which the mask 170 and the through holes 170 a are arranged in a staggered arrangement opposite to each other. Thereby, as shown to (a) of FIG. 8, the other end side of the remaining through-holes 70a is sealed by the sealing material, and the sealing part 70p is formed. Subsequently, the mask 170 ′ and the honeycomb structure 70 can be easily separated from the main body 10 and the elastic plate 20 by deforming the elastic plate 20 in a convex shape in the same manner as described above.
　そしてこのようにして、貫通孔７０ａの両端が封口されたハニカム構造体７０を乾燥、焼成等することにより、ハニカムフィルタを製造することが出来る。 In this way, a honeycomb filter can be manufactured by drying, firing, etc., the honeycomb structure 70 in which both ends of the through hole 70a are sealed.
　本実施形態によれば、深さ可変窪み２０ｄ内に貯留した封口材１３０をハニカム構造体７０の下端面７０ｄから供給することにより、容易に封口作業が行える。また、最大深さとされた深さ可変窪み２０ｄ内に封口材を貯留し、封口時に深さ可変窪み３０ｄの深さをゼロとするので、窪みの深さを中途の深さに固定する必要が無く、貯留時や封口時の深さ可変窪み２０ｄの深さの可変操作が簡単である。また、深さ可変窪み２０ｄの最大深さＤｐが封口長さＬの１０％以上かつ１００％未満である。したがって、最大深さが無用に長い装置に比して、封口材を貯留する時（すなわち、最大深さ時）の深さ可変窪み２０ｄの内容積を、１回の封口に必要な封口材の体積に比して極端に大きすぎない適切な範囲にすることができる。これにより、封口作業に於いて窪みの深さを無駄に変化させることが少なくなり、封口作業を短時間で行うことができる。さらに、一回で使い切る量の封口材１３０を深さ可変動窪み２０ｄに供給し、一回の封口作業毎に封口材を使いきることにより封口材の無駄を無くすことができ、封口材の水分量等の変質等や、弾性板２０への不要な付着も少ない。したがって、封口されたハニカム構造体を低コスト化で製造することが出来る。 According to the present embodiment, the sealing material 130 stored in the variable depth recess 20d is supplied from the lower end surface 70d of the honeycomb structure 70, so that the sealing operation can be easily performed. Further, since the sealing material is stored in the maximum depth variable recess 20d and the depth of the variable depth recess 30d is set to zero at the time of sealing, it is necessary to fix the depth of the recess to an intermediate depth. In addition, the variable operation of the depth variable recess 20d during storage or sealing is easy. Further, the maximum depth Dp of the variable depth recess 20d is 10% or more and less than 100% of the sealing length L. Therefore, as compared with an apparatus in which the maximum depth is unnecessarily long, the internal volume of the depth-variable recess 20d when storing the sealing material (that is, at the maximum depth) is the amount of the sealing material necessary for one sealing. It can be in an appropriate range that is not extremely large compared to the volume. As a result, it is less likely that the depth of the depression is changed wastefully in the sealing operation, and the sealing operation can be performed in a short time. Further, the sealing material 130 can be used up at a time to the variable depth depression 20d, and the sealing material can be used every time the sealing work is performed, thereby eliminating waste of the sealing material. There are few alterations, such as quantity, and unnecessary adhesion to the elastic plate 20. Therefore, the sealed honeycomb structure can be manufactured at a low cost.
　（第二実施形態）
　続いて、図９を参照して、本発明の第二実施形態に係る封口装置２００を説明する。図９は、封口装置２００の概略断面図である。本実施形態に係る封口装置２００が、第一実施形態の封口装置１００と異なる主な点は、弾性板２０に代えて、深さ固定窪み１０ｄの内部にピストン６５が配置されている点である。ピストン６５は、ピストン板６３及びピストンロッド６４を有している。ピストン板６３は深さ固定窪み１０ｄ内に配置されており、深さ固定窪み１０ｄの側面１０ｂと、ピストン板６３の上面６３ｃとが、深さ可変窪み２０ｄを形成している。深さ可変窪み２０ｄの最大深さＤｐは、第一実施形態と同様である。本実施形態では、ピストン板６３及び本体部１０の深さ固定窪み１０ｄが窪み形成部９９を構成する。
　本体部１０を貫通するピストンロッド６４の端部は、モータ（深さ調節部）５５に接続されており、ピストン板６３をハニカム構造体７０の下端面７０ｄに対して移動可能となっている。なお、流体ＦＬを本体部１０に供給する必要は無いので、多孔質体１０ｐは必要ない。本実施形態によっても、深さ可変窪み２０ｄによって第一実施形態と同様の作用効果を奏する。 (Second embodiment)
Then, with reference to FIG. 9, the sealing apparatus 200 which concerns on 2nd embodiment of this invention is demonstrated. FIG. 9 is a schematic sectional view of the sealing device 200. The main difference between the sealing device 200 according to the present embodiment and the sealing device 100 according to the first embodiment is that a piston 65 is disposed inside the depth fixing recess 10d instead of the elastic plate 20. . The piston 65 has a piston plate 63 and a piston rod 64. The piston plate 63 is disposed in the fixed depth recess 10d, and the side surface 10b of the fixed depth recess 10d and the upper surface 63c of the piston plate 63 form a variable depth recess 20d. The maximum depth Dp of the depth variable recess 20d is the same as in the first embodiment. In the present embodiment, the piston plate 63 and the depth fixing recess 10 d of the main body portion 10 constitute the recess forming portion 99.
An end portion of the piston rod 64 penetrating the main body portion 10 is connected to a motor (depth adjusting portion) 55, and the piston plate 63 can be moved with respect to the lower end surface 70 d of the honeycomb structure 70. In addition, since it is not necessary to supply the fluid FL to the main-body part 10, the porous body 10p is unnecessary. Also according to the present embodiment, the same effect as that of the first embodiment can be obtained by the variable depth recess 20d.
　なお、本発明は上記実施形態に限定されるものでなく、様々な変形態様が可能である。 In addition, this invention is not limited to the said embodiment, A various deformation | transformation aspect is possible.
　例えば、上記第一実施形態では、弾性板２０が、リング部材２５、及び、ボルト３１により、本体部１０に対して固定されているが、固定方法は特に限定されない。例えば、弾性板２０が接着剤によって、本体部１０の上面１０ａに固定されていてもよい。 For example, in the first embodiment, the elastic plate 20 is fixed to the main body 10 by the ring member 25 and the bolt 31, but the fixing method is not particularly limited. For example, the elastic plate 20 may be fixed to the upper surface 10a of the main body 10 by an adhesive.
　また、第一実施形態では、連通路１０ｅが、本体部１０及び接続パイプ１４により形成されているが、接続パイプ１４を有さずに本体部１０に直接ポンプ５０が接続されていてもよい。また、多孔質体１０ｐを有さなくても実施は可能である。 In the first embodiment, the communication path 10e is formed by the main body 10 and the connection pipe 14, but the pump 50 may be directly connected to the main body 10 without the connection pipe 14. Further, the present invention can be implemented without the porous body 10p.
　また、第一実施形態では、ポンプ５０として、シリンダ５１、ピストン５３、及び、ピストンロッド５４を備えたピストンポンプを採用しているが、流体を供給及び排出できるものであれば特に限定されない。 In the first embodiment, a piston pump including a cylinder 51, a piston 53, and a piston rod 54 is employed as the pump 50. However, the pump 50 is not particularly limited as long as the fluid can be supplied and discharged.
　また、第一実施形態及び第二実施形態において、深さ可変窪み２０ｄの形状は特に限定されず、封口対象となるハニカム構造体７０の端部の形状にあわせて適宜設定できる。例えば、ハニカム構造体７０の外形形状は円柱でなくてもよく、例えば、楕円柱、矩形柱、正方形柱等でもよい。したがって、深さ可変窪み１０ｄの形状も、これに対応する種々の柱状とすることができる。また、本体部１０の上面１０ａに対して、側面２０ｂが垂直、かつ、底面２０ｃが平行である必要は無く、例えば、斜面であったり曲面であってもよい。 In the first embodiment and the second embodiment, the shape of the variable depth recess 20d is not particularly limited, and can be set as appropriate according to the shape of the end of the honeycomb structure 70 to be sealed. For example, the outer shape of the honeycomb structure 70 may not be a cylinder, and may be, for example, an elliptical column, a rectangular column, a square column, or the like. Therefore, the shape of the variable depth recess 10d can also be various columnar shapes corresponding thereto. Further, the side surface 20b need not be perpendicular to the top surface 10a of the main body 10 and the bottom surface 20c need not be parallel, and may be, for example, a slope or a curved surface.
　また、ハニカム構造体７０の貫通孔７０ａの断面形状は、正方形でなくてもよく、例えば、長方形、三角形、多角形、円形等でも構わない。また、ハニカム構造体が互いに異なる径の貫通孔を有していたり、及び／又は、互いに異なる形状の貫通孔を有していてもよい。さらに、貫通孔７０ａの配置も、正方形配置でなくてもよく、例えば、３角配置、千鳥配置等でも構わない。 Moreover, the cross-sectional shape of the through hole 70a of the honeycomb structure 70 may not be a square, and may be, for example, a rectangle, a triangle, a polygon, a circle, or the like. Further, the honeycomb structure may have through holes with different diameters and / or may have through holes with different shapes. Furthermore, the arrangement of the through holes 70a may not be a square arrangement, for example, a triangular arrangement, a staggered arrangement, or the like.
　また、上記実施形態では、保持部８０は空気圧シリンダ８２を備えるがこれに限られず、たとえば、歯車機構等の種々の機構に代替することが出来る。また、移動機構を備えずに単にハニカム構造体の端面を下向きに保持できるものでも構わない。 In the above embodiment, the holding unit 80 includes the pneumatic cylinder 82, but is not limited thereto, and can be replaced with various mechanisms such as a gear mechanism. Further, it is possible to simply hold the end face of the honeycomb structure downward without providing a moving mechanism.
　また、上記実施形態では、多数の貫通孔を有する板状のマスク１７０を採用しているが、マスクにより遮蔽する場所も任意であり、貫通孔７０ａの形状や配置に合わせて適宜変更できる。さらに、このようなマスク１７０を用いなくても実施可能である。例えば、封口処理の前に、ハニカム構造体７０の一部の貫通孔７０ａ内に加熱すると分解する材料により栓をしておき、封口後に栓を熱分解等すればよい。本発明では、マスクを使用しない場合であっても、封口処理後に凸状に変形する弾性板２０によって、ハニカム構造体７０を本体部１０や弾性板２０から容易に引き離すことが出来るという効果がある。 Further, in the above embodiment, the plate-like mask 170 having a large number of through holes is adopted, but the place to be shielded by the mask is arbitrary, and can be appropriately changed according to the shape and arrangement of the through holes 70a. Further, the present invention can be implemented without using such a mask 170. For example, the plug may be plugged with a material that decomposes when heated in some of the through holes 70a of the honeycomb structure 70 before the sealing process, and the plug may be pyrolyzed after the sealing. In the present invention, even if a mask is not used, the honeycomb structure 70 can be easily separated from the main body 10 and the elastic plate 20 by the elastic plate 20 that deforms into a convex shape after the sealing process. .
　１０…本体部、１０ｄ…深さ固定窪み、１０ｅ…連通部、１０ｐ…多孔質体、２０…弾性板、２０ｃ…底面、２０ｄ…深さ可変窪み、３０…凹部、５０…ポンプ（深さ調節部）、５５…モータ（深さ調節部）、６５…ピストン、７０…ハニカム構造体、７０ａ…貫通孔、７０ｄ…下端面、８０…保持部、９９…窪み形成部、１００，２００…封口装置、１７０…マスク。 DESCRIPTION OF SYMBOLS 10 ... Main-body part, 10d ... Depth fixed hollow, 10e ... Communication part, 10p ... Porous body, 20 ... Elastic board, 20c ... Bottom, 20d ... Depth variable hollow, 30 ... Recess, 50 ... Pump (depth adjustment) Part), 55 ... motor (depth adjusting part), 65 ... piston, 70 ... honeycomb structure, 70a ... through hole, 70d ... lower end surface, 80 ... holding part, 99 ... hollow forming part, 100, 200 ... sealing device 170 ... Mask.

Claims (9)

  1. 　ハニカム構造体の複数の貫通孔の端部を封口材で所定の封口長さに亘って封口する封口装置であって、
    　深さ可変窪みを形成する窪み形成部と、
    　複数の貫通孔を有するハニカム構造体の端面を前記深さ可変窪みの上に保持する保持部と、
    　前記深さ可変窪みの深さを変化させる深さ調節部と、を備え、
    　前記深さ可変窪みの最大深さが前記所定の封口長さの１０％以上かつ１００％未満である封口装置。     A sealing device that seals ends of a plurality of through holes of a honeycomb structure with a sealing material over a predetermined sealing length,
    A dent forming part for forming a variable depth dent,
    A holding portion for holding an end face of the honeycomb structure having a plurality of through holes on the depth variable depression;
    A depth adjustment unit that changes the depth of the depth variable recess,
    The sealing device in which the maximum depth of the depth variable recess is 10% or more and less than 100% of the predetermined sealing length.
  2. 　前記深さ可変窪みの最大深さＤｐは、前記ハニカム構造体の端面の面積をＡ０、前記ハニカム構造体の端面の封口されるべき開口面積をＡ１、前記所定の封口長さをＬとした時に、（Ａ１／Ａ０）Ｌ≦Ｄｐ＜２（Ａ１／Ａ０）Ｌを満たす請求項１記載の装置。 The maximum depth Dp of the depth-variable depression is defined such that the area of the end face of the honeycomb structure is A 0 , the opening area of the end face of the honeycomb structure to be sealed is A 1 , and the predetermined sealing length is L. The device according to claim 1, wherein (A 1 / A 0 ) L ≦ Dp <2 (A 1 / A 0 ) L is satisfied.
  3. 　前記窪み形成部は、深さ固定窪みを有する本体部、及び、前記本体部の前記深さ固定窪みを覆うように設けられて前記深さ可変窪みの内面を形成する弾性板を有し、
    　前記本体部は、前記本体部の前記深さ固定窪みと前記弾性板との間に流体を供給可能な流路を備え、
    　前記深さ調節部は、流体を、前記流路を介して前記本体部と前記弾性板との間に供給する請求項１又は２記載の装置。     The dent forming part includes a main body part having a fixed depth dent, and an elastic plate that is provided so as to cover the fixed depth dent of the main body part and forms an inner surface of the variable depth dent,
    The main body includes a flow path capable of supplying a fluid between the depth fixing recess of the main body and the elastic plate,
    The apparatus according to claim 1, wherein the depth adjusting unit supplies a fluid between the main body and the elastic plate via the flow path.
  4. 　前記流体は非圧縮性流体である請求項３記載の装置。 The apparatus of claim 3, wherein the fluid is an incompressible fluid.
  5. 　前記本体部の前記深さ固定窪みの内面は多孔質体を含み、前記流路は前記多孔質体の気孔を含む請求項３又は４記載の装置。 The apparatus according to claim 3 or 4, wherein an inner surface of the depth fixing recess of the main body portion includes a porous body, and the flow path includes pores of the porous body.
  6. 　前記窪み形成部は、深さ固定窪みを有する本体部、及び、前記深さ固定窪み内に設けられて前記深さ可変窪みの底面を形成するピストン板を有し、
    　前記深さ調節部は、前記ピストン板を移動させる請求項１又は２記載の装置。     The dent forming part has a main body part having a fixed depth dent, and a piston plate provided in the fixed depth dent to form the bottom surface of the variable depth dent,
    The device according to claim 1, wherein the depth adjustment unit moves the piston plate.
  7. 　深さ可変窪みの中に封口材を貯留する工程と、
    　複数の貫通孔を有するハニカム構造体の端面を前記深さ可変窪みの上に配置する工程と、
    　前記深さ可変窪みの深さをゼロに減ずることにより前記封口材を前記ハニカム構造体の前記複数の貫通孔の端部に所定の封口長さにわたって供給する工程と、を備え、
    　前記貯留する工程において前記深さ可変窪みの深さは可変範囲内の最大深さとされ、前記最大深さが前記所定の封口長さの１０％以上かつ１００％未満である、ハニカム構造体の封口方法。     Storing the sealing material in the depth variable recess,
    A step of disposing an end face of the honeycomb structure having a plurality of through holes on the depth variable depression;
    Supplying the sealing material to end portions of the plurality of through holes of the honeycomb structure over a predetermined sealing length by reducing the depth of the depth variable depression to zero, and
    In the storing step, the depth of the variable depth recess is a maximum depth within a variable range, and the maximum depth is 10% or more and less than 100% of the predetermined sealing length. Method.
  8. 　前記深さ可変窪みの最大深さＤｐは、前記ハニカム構造体の端面の面積をＡ０、前記ハニカム構造体の端面の封口されるべき開口面積をＡ１、前記所定の封口長さをＬとした時に、（Ａ１／Ａ０）Ｌ≦Ｄｐ＜２（Ａ１／Ａ０）Ｌを満たす請求項７記載の方法。 The maximum depth Dp of the depth-variable depression is defined such that the area of the end face of the honeycomb structure is A 0 , the opening area of the end face of the honeycomb structure to be sealed is A 1 , and the predetermined sealing length is L. The method according to claim 7, wherein (A 1 / A 0 ) L ≦ Dp <2 (A 1 / A 0 ) L is satisfied.
  9. 　前記深さ可変窪みは、深さ固定窪みを有する本体部、及び、前記本体部の前記深さ固定窪みを覆うように設けられて前記深さ可変窪みの内面を形成する弾性板により形成され、
    　前記本体部は、前記本体部の前記深さ固定窪みと前記弾性板との間に流体を供給可能な流路を備え、
    　流体を、前記流路を介して前記本体部と前記弾性板との間に供給することにより前記深さ可変窪みの深さを減ずる請求項７又は８記載の方法。     The depth variable depression is formed by a main body having a depth fixing depression, and an elastic plate that is provided so as to cover the depth fixing depression of the main body to form the inner surface of the depth varying depression.
    The main body includes a flow path capable of supplying a fluid between the depth fixing recess of the main body and the elastic plate,
    The method according to claim 7 or 8, wherein a fluid is supplied between the main body portion and the elastic plate via the flow path to reduce the depth of the variable depth recess.
PCT/JP2011/061444 2010-05-19 2011-05-18 Opening sealing device and opening sealing method WO2011145654A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009006629A (en) * 2007-06-29 2009-01-15 Ngk Insulators Ltd Apparatus for sealing opening end of honeycomb structure
JP2009006628A (en) * 2007-06-29 2009-01-15 Ngk Insulators Ltd Mask, apparatus and method for sealing opening end of honeycomb structure and method for manufacturing the honeycomb structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009006629A (en) * 2007-06-29 2009-01-15 Ngk Insulators Ltd Apparatus for sealing opening end of honeycomb structure
JP2009006628A (en) * 2007-06-29 2009-01-15 Ngk Insulators Ltd Mask, apparatus and method for sealing opening end of honeycomb structure and method for manufacturing the honeycomb structure

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