JPH05131424A - Honeycomb molding die - Google Patents

Honeycomb molding die

Info

Publication number
JPH05131424A
JPH05131424A JP32146891A JP32146891A JPH05131424A JP H05131424 A JPH05131424 A JP H05131424A JP 32146891 A JP32146891 A JP 32146891A JP 32146891 A JP32146891 A JP 32146891A JP H05131424 A JPH05131424 A JP H05131424A
Authority
JP
Japan
Prior art keywords
supply hole
kneaded material
honeycomb
die
material supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP32146891A
Other languages
Japanese (ja)
Other versions
JP3121405B2 (en
Inventor
Shoji Takamatsu
昇司 高松
Yoshimi Ohashi
義美 大橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ibiden Co Ltd
Original Assignee
Ibiden Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ibiden Co Ltd filed Critical Ibiden Co Ltd
Priority to JP03321468A priority Critical patent/JP3121405B2/en
Publication of JPH05131424A publication Critical patent/JPH05131424A/en
Application granted granted Critical
Publication of JP3121405B2 publication Critical patent/JP3121405B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • B28B3/26—Extrusion dies
    • B28B3/269—For multi-channeled structures, e.g. honeycomb structures

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

PURPOSE:To provide the above die reduced in the resistance to a body by making a body supply hole part thin and short and having high bending strength. CONSTITUTION:In a die 3 for the extrusion molding of a ceramic honeycomb structure consisting of a body supply hole part 7 and a body discharge slit part 8, a reinforcing rib 11 is provided to the surface of the body supply hole part 7 so as to be closely bonded thereto. Since the body supply hole part is short, even a body low in moisture content can be smoothly molded and the die for molding the body supply hole part is easily produced and the production cost thereof also becomes low.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、セラミックハニカム構
造体の押出し成形に用いるハニカム成型用ダイスに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a honeycomb molding die used for extrusion molding of a ceramic honeycomb structure.

【０００２】[0002]

【従来の技術】セラミック製のハニカム構造体は、例え
ば自動車用排気ガスの浄化用触媒担体、排気ガス中の微
粒子除去用のフィルタ−、排気ガスの熱交換体などに多
用されている。2. Description of the Related Art A honeycomb structure made of ceramic is widely used, for example, as a catalyst carrier for purifying exhaust gas for automobiles, a filter for removing fine particles in exhaust gas, a heat exchanger for exhaust gas, and the like.

【０００３】この種のセラミックハニカム構造体を成型
するに当って、従来は一般に図１に図示する如き構造の
ハニカム押出し成型装置を用い、ハニカム構造体を連続
して押出し成型している。図１において、１はシリンダ
−、２は押出し手段であり、例えば回転しながら矢印ａ
の方向にセラミック坏土４を移動させるスクリュ−、３
はハニカム成型用ダイスで、坏土を予め定めた断面形状
をもつハニカムに成型するものである。５は押出し成形
されたハニカム構造体あり、矢印ｂの方向に押出され
る。６はシリンダ−１とハニカム成型用ダイス３とを連
結保持する連結手段である。In molding a ceramic honeycomb structure of this type, conventionally, a honeycomb extrusion molding apparatus having a structure as shown in FIG. 1 is generally used to continuously extrude a honeycomb structure. In FIG. 1, reference numeral 1 is a cylinder, and 2 is a pushing means, for example, an arrow a while rotating.
Screw for moving the ceramic clay 4 in the direction of
Is a die for forming a honeycomb, which forms a kneaded clay into a honeycomb having a predetermined cross-sectional shape. Reference numeral 5 denotes an extruded honeycomb structure, which is extruded in the direction of arrow b. Reference numeral 6 is a connecting means for connecting and holding the cylinder-1 and the honeycomb molding die 3.

【０００４】ハニカム成型用ダイス３は、坏土供給用穴
部７と坏土排出スリット部８とからなっている。そし
て、坏土供給穴部７は、シリンダ−１から供給される坏
土を、排出スリット部８に供給する部分であり、円筒状
の独立した坏土供給穴９が多数設けられている。ｃは坏
土供給穴９の長さである。坏土排出スリット部８は、坏
土供給穴９から供給された坏土をスリット状に変形させ
て、ハニカム構造を構成させる部分であり、多数のスリ
ット１０が設けられている。また通常坏土供給用穴部７
と坏土排出スリット部８とは一体構造である。The honeycomb molding die 3 comprises a kneaded clay supply hole portion 7 and a kneaded clay discharge slit portion 8. The kneaded material supply hole portion 7 is a portion for supplying the kneaded material supplied from the cylinder-1 to the discharge slit portion 8, and a large number of independent cylindrical kneaded material supply holes 9 are provided. c is the length of the kneaded clay supply hole 9. The kneaded material discharge slit portion 8 is a portion that forms the honeycomb structure by deforming the kneaded material supplied from the kneaded material supply hole 9 into a slit shape, and is provided with a large number of slits 10. Also, the normal kneaded material supply hole 7
The kneaded material discharge slit portion 8 has an integrated structure.

【０００５】シリンダ−２から供給される坏土は、ハニ
カム成型用ダイス３の坏土供給用穴部７から坏土供給穴
９に押し入れられ、この坏土供給穴９を通過した坏土
は、坏土排出スリット部８のスリット１０に入りスリッ
ト状に変形されてハニカム構造が形成される。しかし
て、この従来のハニカム成型用ダイスにおいては、ハニ
カム成型用ダイス３にかかる大きな押出し圧力による該
ダイスの歪みを防ぐため、坏土供給用穴部７の厚さをで
きるだけ大きくして、成型用ダイスの曲げ強度を大きく
している。The kneaded material supplied from the cylinder-2 is pushed into the kneaded material supply hole 9 through the kneaded material supply hole portion 7 of the honeycomb forming die 3, and the kneaded material that has passed through the kneaded material supply hole 9 is The honeycomb structure is formed by entering the slit 10 of the kneaded material discharge slit portion 8 and deforming it into a slit shape. However, in this conventional honeycomb molding die, in order to prevent distortion of the honeycomb molding die 3 due to the large extrusion pressure applied to the honeycomb molding die 3, the thickness of the kneaded material supply hole portion 7 is increased as much as possible. The bending strength of the die is increased.

【０００６】ところで、セラミック坏土からハニカム構
造体を成形する場合には、できるだけ水分の少ない坏土
を用いることが重要である。しかし低水分のセラミック
坏土を成形する場合には次のような問題点がある。即
ち、水分を少なくすればするほど坏土が坏土供給用穴部
７及び坏土排出スリット部８を通過する際の抵抗が大き
くなるので、大きな押出し圧力が必要となり、ハニカム
成型用ダイスに大きな押出し圧力がかかる。この大きな
押出し圧力に抗するためには坏土供給用穴部の厚さを増
加しなければならが、この厚さを増加すると坏土供給用
穴の長さｃが長くなり、これによって益々坏土が坏土供
給用穴部を通過する際の抵抗が増大し、この増大する押
出し圧力に抗するよう坏土供給用穴部の厚さを更に増加
しなければならないという悪循環に陥る問題点がある。By the way, when forming a honeycomb structure from a ceramic kneaded material, it is important to use a kneaded material having a minimum water content. However, when forming a low-moisture ceramic body, there are the following problems. That is, as the water content is reduced, the resistance when the kneaded material passes through the kneaded material supply hole portion 7 and the kneaded material discharge slit portion 8 is increased, so that a large extrusion pressure is required and a large honeycomb molding die is required. Extrusion pressure is applied. In order to withstand this large extrusion pressure, it is necessary to increase the thickness of the kneaded material supply hole portion. However, if this thickness is increased, the length c of the kneaded material supply hole becomes longer, and as a result, the kneaded material supply hole length increases. The resistance of the soil passing through the kneaded material supply hole increases, and the thickness of the kneaded material supply hole must be further increased to resist the increasing extrusion pressure. is there.

【０００７】[0007]

【発明が解決しようとする課題】本発明は、上記の問題
点を解消し、水分の少ないセラミック坏土を円滑にハニ
カム構造体に成形できる成形用ダイスを提供することを
目的とし、詳しくは坏土供給用穴部の抵抗を少なくし、
しかも曲げ強度の大きいハニカム成型用ダイスを提供す
ることを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a forming die capable of smoothly forming a ceramic kneaded material having a low water content into a honeycomb structure. Reduce the resistance of the soil supply hole,
Moreover, it is an object of the present invention to provide a die for honeycomb molding having high bending strength.

【０００８】[0008]

【課題を解決するための手段】すなわち本発明は、坏土
供給用穴部と坏土排出スリット部とからなるセラミック
ハニカム構造体の押出成型用ダイスにおいて、坏土供給
用穴部の表面に、該表面に密着する補強用リブを設けた
ハニカム成型用ダイスである。That is, the present invention is an extrusion die for a ceramic honeycomb structure comprising a kneaded material supply hole portion and a kneaded material discharge slit portion, on the surface of the kneaded material supply hole portion, A honeycomb molding die provided with a reinforcing rib that closely adheres to the surface.

【０００９】本発明においては、坏土供給用穴部の坏土
供給側の表面に、該表面に密着する補強用リブを設けた
ので、坏土供給用穴部の厚さを薄くしても、ハニカム成
型用ダイスに大きな押出し圧力がかかった際、ハニカム
成型用ダイスが歪むことなく円滑に成形できる。そし
て、坏土供給用穴部を薄くできることにより、坏土供給
用穴を短くすることができ、したがって、坏土の坏土供
給用穴を通過する際の抵抗が少なくなり、そのため、水
分の少ない坏土を用いても良好に成形することが可能に
なる。しかも、坏土供給用穴が短いのでその穿孔加工が
容易であり、成型用ダイスの製造コストも安くなる。ま
た本発明において、坏土供給用穴部の形状は円筒状であ
っても、また円錐状であってもよい。In the present invention, since the reinforcing ribs that are in close contact with the surface are provided on the surface of the kneaded material supply hole portion on the kneaded material supply side, even if the thickness of the kneaded material supply hole portion is reduced. When a large extrusion pressure is applied to the honeycomb forming die, the honeycomb forming die can be smoothly formed without distortion. Since the kneaded material supply hole can be made thin, the kneaded material supply hole can be shortened, and therefore the resistance of the kneaded material when passing through the kneaded material supply hole is reduced, so that the amount of water is small. Even if the kneaded material is used, the molding can be performed well. Moreover, since the kneaded material supply hole is short, the perforating process is easy and the manufacturing cost of the molding die is low. In the present invention, the kneaded material supply hole may have a cylindrical shape or a conical shape.

【００１０】坏土供給用穴部の坏土供給側表面にリブを
設けるには種々の態様がある。例えば、補強用リブを坏
土供給用穴部の坏土供給側の表面に密着して一文字型に
設けたり、十文字型に設ける。補強用リブを設けるに当
たっては、補強用リブが、坏土供給用穴部の坏土供給用
穴を閉塞しないこと、坏土の流れをできるだけ妨げない
こと、しかも成型用ダイスの歪みを防止できることとい
う要件を満たすように設けるのが好ましい。この要件を
満たすには、補強用リブの横断面を細長い菱形状にする
のが好ましい。また、補強用リブはハニカム成型用ダイ
スと一体構造にするのが好ましい。There are various modes for providing ribs on the surface of the body for supplying the body of the body for supplying the body. For example, the reinforcing rib is provided in a one-letter shape or a cross-letter shape in close contact with the surface of the kneaded clay supply side on the kneaded clay supply side. In providing the reinforcing ribs, the reinforcing ribs do not block the kneaded material supply holes of the kneaded material supply holes, do not disturb the flow of the kneaded material as much as possible, and prevent distortion of the molding die. It is preferably provided so as to meet the requirements. In order to satisfy this requirement, it is preferable that the reinforcing rib has a cross section of an elongated rhombus. Further, it is preferable that the reinforcing ribs have an integrated structure with the honeycomb molding die.

【００１１】[0011]

【実施例】図２〜図５は、本発明の補強用リブを一文字
型に設けたハニカム成型用ダイスの一例を示したもので
ある。図２は補強用リブ付きハニカム成型用ダイスの坏
土供給側からみた平面図であり、図３はその側面図であ
り、図４はそのＡ、Ａ線での断面図である。１１は補強
用リブであり、その横断面は細長い菱形状である。そし
て、この細長い菱形状の補強用リブ１１の一方の細い部
分１３を坏土供給用穴部７の表面の穴のあいていない部
分に密着させる。このようにすると、坏土供給用穴９を
閉塞しないで補強用リブを設けることができる。また、
細長い菱形状の補強用リブ１１の他方の細い部分１２側
から坏土が供給されるが、この部分が細くなっているの
で、坏土に対する抵抗が少なく、坏土は円滑に坏土供給
用穴９に供給される。更に、この補強用リブ１１は太い
部分１４、１４’があるので、強度が高く、成型用ダイ
スの歪み完全に阻止できる。また、横断面が細長い菱形
状の補強用リブの他に、図５に示すごとき横断面が角錐
状の２個のリブ１１ａ、１１ｂを、その底面同士を溶着
して補強用リブ１１にしてもよい。EXAMPLES FIGS. 2 to 5 show an example of a honeycomb molding die in which the reinforcing ribs of the present invention are provided in a single letter shape. FIG. 2 is a plan view of the honeycomb-molding die with reinforcing ribs as viewed from the kneaded material supply side, FIG. 3 is a side view thereof, and FIG. 4 is a cross-sectional view taken along the lines A and A. Reference numeral 11 is a reinforcing rib, the cross section of which is an elongated rhombus. Then, one thin portion 13 of the elongated rhombus-shaped reinforcing rib 11 is brought into close contact with a non-perforated portion of the surface of the kneaded clay supply hole portion 7. In this way, the reinforcing rib can be provided without closing the kneaded clay supply hole 9. Also,
The kneaded clay is supplied from the other thin portion 12 side of the elongated rib-shaped reinforcing rib 11, but since this portion is thin, the resistance to the kneaded clay is small, and the kneaded clay is smoothly kneaded into the kneaded clay supply hole. 9 is supplied. Further, since the reinforcing rib 11 has thick portions 14 and 14 ', it has high strength and can completely prevent distortion of the molding die. In addition to the reinforcing rib having a slender cross-section, two ribs 11a and 11b having a pyramidal cross-section as shown in FIG. Good.

【００１２】本実施例において、坏土排出スリット部８
におけるスリット１０は、スリット巾０．２ｍｍ、スリ
ット長さ３．０ｍｍ、セル数１７０／ｉｎにした。また
坏土供給用穴部７の坏土供給用穴９は、径１．５ｍｍ、
長さ５ｍｍ、穴の数１７０／ｉｎにした。そして、補強
用リブ部１１は、菱形状構造であり、その長さは２０ｍ
ｍ、高さ（１２−１３間）は１５ｍｍであり、最大幅
（１４−１４’間）は７ｍｍにした。In this embodiment, the kneaded clay discharging slit portion 8
The slit 10 has a slit width of 0.2 mm, a slit length of 3.0 mm, and a cell number of 170 / in. The kneaded material supply hole 9 of the kneaded material supply hole portion 7 has a diameter of 1.5 mm,
The length was 5 mm and the number of holes was 170 / in. The reinforcing rib portion 11 has a rhombic structure and its length is 20 m.
m, the height (between 12 and 13) was 15 mm, and the maximum width (between 14 and 14 ') was 7 mm.

【００１３】[0013]

【発明の効果】本発明のセラミックハニカム構造体成型
用ダイスにおいては、坏土供給用穴部の表面に密着する
補強用リブを設け、成型用ダイスの曲げ強度を高めたの
で、坏土供給用穴部の厚さを薄くすることができ、した
がって坏土供給用穴の長さを短くすることができ、水分
の少ない坏土を用いても円滑に成形することが可能にな
る。また坏土供給用穴が短いのでその穿孔加工が容易で
あり、成型用ダイスの製造コストも安くなる利点があ
る。EFFECT OF THE INVENTION In the ceramic honeycomb structure forming die of the present invention, since the reinforcing ribs are provided in close contact with the surface of the kneaded material supplying hole portion, the bending strength of the forming die is increased, It is possible to reduce the thickness of the hole portion, and therefore, it is possible to shorten the length of the kneaded material supply hole, and it is possible to smoothly form the kneaded material having a low water content. Further, since the kneaded material supply hole is short, the boring process is easy and the manufacturing cost of the molding die is low.

【図面の簡単な説明】[Brief description of drawings]

【図１】ハニカム押出し成形装置の主要部の断面図FIG. 1 is a sectional view of a main part of a honeycomb extrusion molding apparatus.

【図２】本発明のハニカム成形用ダイスの平面図FIG. 2 is a plan view of a honeycomb molding die of the present invention.

【図３】本発明のハニカム成形用ダイスの側面図FIG. 3 is a side view of the honeycomb molding die of the present invention.

【図４】本発明のハニカム成形用ダイスの断面図FIG. 4 is a cross-sectional view of the honeycomb molding die of the present invention.

【図５】本発明における補強用リブの他の例の断面図FIG. 5 is a cross-sectional view of another example of the reinforcing rib according to the present invention.

【符号の説明】[Explanation of symbols]

１ シリンダ−、２ スクリュ−、３ ハニカム成形用
ダイス、４ セラミック坏土、５ ハニカム構造体、７
坏土供給用穴部、８ 坏土排出スリット部、９坏土供
給用穴、１０ スリット、１１ 補強用リブDESCRIPTION OF SYMBOLS 1 cylinder-2 screw-3 Honeycomb forming die 4 Ceramic kneaded clay 5 Honeycomb structure, 7
Kneaded clay supply hole, 8 Kneaded clay discharge slit, 9 Kneaded clay supply hole, 10 Slit, 11 Reinforcing rib

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】坏土供給用穴部と坏土排出スリット部とか
らなるセラミックハニカム構造体の押出成型用ダイスに
おいて、坏土供給用穴部の表面に、該表面に密着する補
強用リブを設けたことを特徴とするハニカム成型用ダイ
ス。1. A die for extrusion molding of a ceramic honeycomb structure comprising a kneaded material supply hole and a kneaded material discharge slit, wherein a reinforcing rib that is in close contact with the surface is provided on the surface of the kneaded material supply hole. A die for forming a honeycomb, which is characterized by being provided.
JP03321468A 1991-11-11 1991-11-11 Dies for honeycomb molding Expired - Fee Related JP3121405B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP03321468A JP3121405B2 (en) 1991-11-11 1991-11-11 Dies for honeycomb molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP03321468A JP3121405B2 (en) 1991-11-11 1991-11-11 Dies for honeycomb molding

Publications (2)

Publication Number Publication Date
JPH05131424A true JPH05131424A (en) 1993-05-28
JP3121405B2 JP3121405B2 (en) 2000-12-25

Family

ID=18132904

Family Applications (1)

Application Number Title Priority Date Filing Date
JP03321468A Expired - Fee Related JP3121405B2 (en) 1991-11-11 1991-11-11 Dies for honeycomb molding

Country Status (1)

Country Link
JP (1) JP3121405B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007504019A (en) * 2003-08-29 2007-03-01 コーニング インコーポレイテッド Method and apparatus for extruding ceramic materials
WO2007039991A1 (en) * 2005-10-05 2007-04-12 Ibiden Co., Ltd. Die for extrusion molding and process for producing porous ceramic member

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0431905A (en) * 1990-05-29 1992-02-04 Okuma Mach Works Ltd Numerical controller with inter-spindle interference preventing function

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007504019A (en) * 2003-08-29 2007-03-01 コーニング インコーポレイテッド Method and apparatus for extruding ceramic materials
WO2007039991A1 (en) * 2005-10-05 2007-04-12 Ibiden Co., Ltd. Die for extrusion molding and process for producing porous ceramic member
JPWO2007039991A1 (en) * 2005-10-05 2009-04-16 イビデン株式会社 Extrusion mold and method for producing porous ceramic member
US7842213B2 (en) 2005-10-05 2010-11-30 Ibiden Co., Ltd. Die for extrusion-molding and method for manufacturing porous ceramic member

Also Published As

Publication number Publication date
JP3121405B2 (en) 2000-12-25

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