JP2003025359A - Thermoforming mold - Google Patents
Thermoforming moldInfo
- Publication number
- JP2003025359A JP2003025359A JP2001216771A JP2001216771A JP2003025359A JP 2003025359 A JP2003025359 A JP 2003025359A JP 2001216771 A JP2001216771 A JP 2001216771A JP 2001216771 A JP2001216771 A JP 2001216771A JP 2003025359 A JP2003025359 A JP 2003025359A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- thermoforming
- die
- friction material
- heater
- 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.)
- Pending
Links
- 238000003856 thermoforming Methods 0.000 title claims abstract description 56
- 239000002783 friction material Substances 0.000 claims abstract description 54
- 239000004744 fabric Substances 0.000 claims abstract description 43
- 239000000919 ceramic Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 description 25
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000000926 separation method Methods 0.000 description 5
- 239000002657 fibrous material Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 244000226021 Anacardium occidentale Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 101000851376 Homo sapiens Tumor necrosis factor receptor superfamily member 8 Proteins 0.000 description 1
- 102100036857 Tumor necrosis factor receptor superfamily member 8 Human genes 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000020226 cashew nut Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、車両等に搭載され
るディスクブレーキ装置のブレーキパッドなどのブレー
キ用の摩擦材の製造工程で使用される熱成形用金型に係
り、詳しくは、加熱環境下で加圧を行うことで、摩擦材
生地を所定の寸法形状の摩擦材に成形する熱成形工程に
おける消費エネルギーを節約するための改良に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermoforming mold used in a process of manufacturing a friction material for a brake such as a brake pad of a disc brake device mounted on a vehicle or the like, and more specifically to a heating environment. The present invention relates to an improvement for saving energy consumption in a thermoforming step of forming a friction material cloth into a friction material having a predetermined size and shape by applying a pressure below.
【０００２】[0002]
【従来の技術】ブレーキ用の摩擦材は、通常、粉粒状の
各種の摩擦材原料を所定の比率で混合する配合・撹拌工
程と、その摩擦材原料を予備成形用金型に投入して常温
にて圧縮成形して所定形状の予備成形体を得る予備成形
工程と、予備成形体を熱成形用金型に投入して所定の圧
力，温度による熱成形処理を施して所定の摩擦材形状に
成形した熱成形体を得る熱成形工程と、熱成形体に対し
て後熱処理や研磨処理等を適宜実施することで所望形状
の摩擦材として完成させる後処理工程とを順に実施する
ことで製造されている。2. Description of the Related Art Friction materials for brakes are usually mixed and stirred at a predetermined ratio by mixing various powdery and granular friction material raw materials, and the friction material raw materials are put into a preforming mold and kept at room temperature. Pre-forming step by compression molding to obtain a pre-formed body with a predetermined shape, and then putting the pre-formed body into a thermoforming die and subjecting it to thermoforming treatment at a predetermined pressure and temperature to obtain a predetermined friction material shape. Manufactured by sequentially performing a thermoforming step of obtaining a molded thermoformed article and a post-treatment step of completing a friction material having a desired shape by appropriately performing post heat treatment or polishing treatment on the thermoformed article. ing.
【０００３】摩擦材の構成成分は、繊維材、結合材、各
種添加材等である。繊維材としては、一般に、金属繊維
や、無機繊維又は有機繊維等からなる各種の繊維材が使
用される。また、結合材としては、フェノール樹脂等の
熱硬化性樹脂粉末が使用される。各種添加材としては、
例えば、摩擦調整材や、潤滑材や、機械的強度アップ等
のための充填材等があり、摩擦調整材としてはセラミッ
クスやカシューダスト、ゴムダスト等が、潤滑材として
は黒鉛や二硫化モリブデンが、そして充填材としては炭
酸カルシウムや硫酸バリウム等が使用されている。この
ような摩擦材の原料は、摩擦材として要求される物理的
性能等に応じて配合比が調整されることになる。The constituents of the friction material are a fiber material, a binder, various additives, and the like. As the fiber material, generally, various fiber materials made of metal fibers, inorganic fibers, organic fibers, or the like are used. Further, as the binder, thermosetting resin powder such as phenol resin is used. As various additive materials,
For example, there are friction modifiers, lubricants, fillers for increasing mechanical strength, etc., and as friction modifiers ceramics, cashew dust, rubber dust, etc., and as lubricants graphite and molybdenum disulfide, Calcium carbonate, barium sulfate or the like is used as the filler. The raw material of such a friction material has a compounding ratio adjusted according to the physical performance required as the friction material.
【０００４】図２は、熱成形工程を実施する熱成形用金
型の従来例を示したものである。この熱成形用金型１
は、予備成形工程で形成した予備成形体である摩擦材生
地３を装填する生地収容部５ａが上下方向に貫通形成さ
れた略筒状の中型５と、この中型５の下に重ねられて先
端部が中型５に装填された摩擦材生地３の裏面に接合さ
れるプレッシャープレート４を押える下型７と、中型５
の上方に昇降可能に装備されると共に降下時に先端部９
ａが生地収容部５ａに嵌入して生地収容部５ａ内の摩擦
材生地３を加圧する上型９と、下型７を介して摩擦材生
地３を所定温度に加熱する下部ヒータ１１と、上型９を
介して摩擦材生地３を所定温度に加熱する上部ヒータ１
３とを備えた構成である。FIG. 2 shows a conventional example of a thermoforming die for carrying out the thermoforming process. This thermoforming mold 1
Is a substantially cylindrical middle die 5 in which a cloth material accommodating portion 5a for loading the friction material cloth 3 which is a preformed body formed in the preforming step is formed in a vertically penetrating manner, and the tip is overlapped under the middle mold 5 A lower die 7 for pressing the pressure plate 4 joined to the back surface of the friction material cloth 3 loaded in the middle die 5, and a middle die 5
It is equipped so that it can be lifted up and down and the tip 9
a is fitted into the cloth container 5a and presses the friction material cloth 3 in the cloth container 5a; a lower heater 11 that heats the friction material cloth 3 to a predetermined temperature through the lower mold 7; An upper heater 1 for heating the friction material cloth 3 to a predetermined temperature via a mold 9.
3 and 3.
【０００５】上部ヒータ１３及び下部ヒータ１１は、板
状の構造材内にシーズヒータなどを埋め込んだもので、
上部ヒータ１３は上型９の上面に密着配置され、また、
下部ヒータ１１は下型７の下面に密着配置されている。
以上の熱成形用金型１は、例えば、上型９及び下型７の
温度を１５０℃前後に加熱昇温させた状態で、金型内の
予備成形体に５００ｋｇ／cm2 前後の成形荷重をかけて
成形を行う。The upper heater 13 and the lower heater 11 are made by embedding a sheathed heater in a plate-shaped structural material.
The upper heater 13 is closely arranged on the upper surface of the upper mold 9, and
The lower heater 11 is closely arranged on the lower surface of the lower mold 7.
The above thermoforming die 1 is, for example, in a state in which the temperature of the upper die 9 and the lower die 7 is raised to about 150 ° C., and the molding load of about 500 kg / cm 2 is applied to the preform in the die. And mold it.
【０００６】[0006]
【発明が解決しようとする課題】ところで、従来より、
下型７や上型９は、成形荷重に耐える十分な機械的強度
の確保等の観点から、一般に、無垢の鋼材料で形成され
ている。そのために、熱容量が大きく、下型７及び上型
９を所定温度に加熱するだけで大きな熱エネルギーの消
費となり、ヒータ１１，１３による加熱時の消費エネル
ギーの増大を招くという問題があった。更に、前述した
従来の熱成形用金型１において、加圧時に降下動作する
上型９には、生地収容部５ａに嵌合する先端部９ａに摩
擦材生地３の圧縮時の変位を許容する長さが必要で、そ
のために、上部ヒータ１３と摩擦材生地３との間の離間
距離Ａがどうしても大きくなる。その結果、摩擦材生地
３の上面を上部ヒータ１３によって所定温度に加熱する
際に、上型９上での熱損失が大きく、この点も、熱成形
工程における消費エネルギーの増大を招く大きな原因と
なっていた。By the way, from the past,
The lower mold 7 and the upper mold 9 are generally made of a solid steel material from the viewpoint of securing sufficient mechanical strength to withstand a molding load. Therefore, there is a problem that the heat capacity is large and a large amount of heat energy is consumed only by heating the lower die 7 and the upper die 9 to a predetermined temperature, which causes an increase in energy consumption during heating by the heaters 11 and 13. Further, in the above-described conventional thermoforming die 1, the upper die 9 that descends when pressurized is allowed to displace the friction material material 3 at the time of compression at the tip portion 9a that fits into the material container 5a. The length is necessary, and therefore the separation distance A between the upper heater 13 and the friction material cloth 3 is inevitably large. As a result, when the upper surface of the friction material cloth 3 is heated to a predetermined temperature by the upper heater 13, there is a large heat loss on the upper mold 9, which also causes a large increase in energy consumption in the thermoforming process. Was becoming.
【０００７】本発明は、上述した問題点に鑑みてなされ
たものであり、その目的は、上型及び下型を熱伝導に優
れた金属材料で構成し、また、上型及び下型自体におけ
る熱損失を小さくして、ヒータの発生する熱エネルギー
を効率よく摩擦材生地に伝達することができ、熱成形工
程における消費エネルギーの節約により熱成形のコスト
低減を図ることのできる熱成形用金型を提供することに
ある。The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to configure the upper mold and the lower mold with a metal material having excellent heat conduction, and to provide the upper mold and the lower mold themselves. A thermoforming mold that reduces heat loss and can efficiently transfer the heat energy generated by the heater to the friction material material, and reduce the cost of thermoforming by saving energy consumption in the thermoforming process. To provide.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る熱成形用金型は、生地収容部が形成さ
れた中型と、前記生地収容部に装填された摩擦材生地を
押える下型と、昇降可能に装備されると共に降下時に前
記生地収容部に嵌入して前記摩擦材生地を加圧する上型
と、前記上型及び下型を所定温度に加熱する上部及び下
部ヒータとを備え、加熱環境下で加圧を行うことで中型
内に装填した摩擦材生地を所定形状の摩擦材に成形する
熱成形用金型であって、前記上型及び下型を、アルミニ
ウム合金をマトリックスとし、セラミックス微粉末を分
散した複合材料により形成したことを特徴とする。In order to achieve the above object, a thermoforming mold according to the present invention comprises a medium-sized mold having a cloth container therein and a friction material cloth loaded in the cloth container. A lower die for pressing, an upper die which is equipped to be able to move up and down, and which is fitted into the material container when it descends and pressurizes the friction material dough, and upper and lower heaters that heat the upper die and the lower die to a predetermined temperature. A thermoforming mold for forming a friction material cloth having a predetermined shape by applying pressure in a heating environment to a friction material material having a predetermined shape, the upper mold and the lower mold being made of an aluminum alloy. A matrix is formed of a composite material in which ceramic fine powder is dispersed.
【０００９】そして、アルミニウム合金をマトリックス
とし、セラミックス微粉末を分散した複合材料は、鋼材
よりも優れた熱伝導性を有するため、上型及び下型を鋼
材で形成していた従来の熱成形用金型と比較すると、金
属材料自体の熱伝導性が向上した分だけ、上型及び下型
における熱損失を低減することができる。Since the composite material in which the aluminum alloy is used as a matrix and the ceramic fine powder is dispersed has a higher thermal conductivity than the steel material, the conventional upper and lower molds are made of steel material for conventional thermoforming. Compared with the die, the heat loss in the upper die and the lower die can be reduced by the amount that the thermal conductivity of the metal material itself is improved.
【００１０】また、本発明に係る請求項２記載の熱成形
用金型は、上記した請求項１記載の熱成形用金型におい
て、少なくとも前記上型を、所定の板厚の先端部とこの
先端部の後方に空洞部を画成する筒部とを備えた有頭筒
状構造に形成し、且つ、前記上部ヒータを、前記上型の
先端部に埋設装備したことを特徴とすると好ましい。A thermoforming die according to a second aspect of the present invention is the thermoforming die according to the first aspect, wherein at least the upper die is provided with a tip portion having a predetermined plate thickness. It is preferable that the upper heater is formed into a headed tubular structure having a tubular portion defining a cavity behind the tip portion, and the upper heater is embedded in the tip portion of the upper mold.
【００１１】このように構成された熱成形用金型におい
ては、上部ヒータと摩擦材生地との間の離間距離が、上
型の先端部の上部ヒータを埋設した部位の板厚ｔ１とな
り、上型の上面に別体の上部ヒータを重ねていた従来の
熱成形用金型と比較すると、上部ヒータと摩擦材生地と
の間の離間距離が大幅に低減される。しかも、上型にお
いて、先端部の背面は、空洞部で断熱性を発揮するた
め、上部ヒータの発生する熱エネルギーは、上型後端部
側への熱の散逸が抑止されて上型の先端部に集中作用
し、上型の先端部から速やかに、且つ効率よく、摩擦材
生地に伝導される。In the thermoforming die thus constructed, the separation distance between the upper heater and the friction material cloth becomes the plate thickness t1 of the portion where the upper heater is embedded at the tip of the upper die. Compared with a conventional thermoforming mold in which a separate upper heater is stacked on the upper surface of the mold, the separation distance between the upper heater and the friction material cloth is greatly reduced. Moreover, in the upper die, the back surface of the tip portion exhibits heat insulation in the cavity, so the heat energy generated by the upper heater is suppressed from being dissipated to the rear end portion of the upper die, and the tip of the upper die is suppressed. Concentrates on the part, and is quickly and efficiently conducted to the friction material cloth from the tip of the upper mold.
【００１２】[0012]
【発明の実施の形態】以下、本発明に係る熱成形用金型
の好適な実施の形態を図面に基づいて詳細に説明する。
なお、以下に説明する実施の形態において、既に図２に
おいて説明した構成と同一の構成については、図中に同
一符号あるいは相当符号を付すことにより説明を簡略化
あるいは省略する。BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a thermoforming die according to the present invention will be described in detail below with reference to the drawings.
In the embodiments described below, the same configurations as those already described with reference to FIG. 2 will be denoted by the same or corresponding reference numerals in the figure to simplify or omit the description.
【００１３】図１は、本発明に係る熱成形用金型の一実
施の形態を示したものである。この一実施の形態の熱成
形用金型２１は、車両等に搭載されるディスクブレーキ
装置のブレーキパッドの製造工程での熱成形工程で使用
される。FIG. 1 shows an embodiment of a thermoforming die according to the present invention. The thermoforming mold 21 of this embodiment is used in a thermoforming process in a process of manufacturing a brake pad of a disc brake device mounted on a vehicle or the like.
【００１４】この熱成形用金型２１は、具体的には、予
備成形工程で形成した予備成形体である摩擦材生地３を
装填する生地収容部５ａが上下方向に貫通形成された略
筒状の中型５と、この中型５の下に重ねられて先端部が
中型５に装填された摩擦材生地３の裏面に接合されるプ
レッシャープレート４を押える下型２３と、中型５の上
方に昇降可能に装備されると共に降下時に先端部が生地
収容部５ａに嵌入して生地収容部５ａ内の摩擦材生地３
の表面を加圧する上型２５と、下型２３を介して摩擦材
生地３を所定温度に加熱する下部ヒータ２７と、上型２
５を介して摩擦材生地３を所定温度に加熱する上部ヒー
タ２９とを備え、上下のヒータ２７，２９による加熱環
境下で加圧を行うことで、摩擦材生地３を所定の寸法形
状の摩擦材に成形する。Specifically, the thermoforming die 21 has a substantially tubular shape in which a cloth containing portion 5a for loading the friction material cloth 3 which is a preformed body formed in the preforming step is vertically formed so as to penetrate therethrough. The lower mold 23 that presses the pressure plate 4 that is joined to the back surface of the friction material material 3 that is stacked below the middle mold 5 and that has the leading end loaded in the middle mold 5, and can move up and down above the middle mold 5. And the tip end portion of the friction material cloth 3 is inserted into the cloth material housing portion 5a when the material is installed in the cloth material housing portion 5a.
Upper die 25 for pressing the surface of the lower die, a lower heater 27 for heating the friction material cloth 3 to a predetermined temperature through the lower die 23, and an upper die 2
5 is provided with an upper heater 29 that heats the friction material cloth 3 to a predetermined temperature, and pressurization is performed in a heating environment by the upper and lower heaters 27, 29 to cause friction of the friction material cloth 3 to have a predetermined size and shape. Form into material.
【００１５】なお、本実施の形態の熱成形用金型２１に
おいて、熱成形する予備成形体、中型５は、従来のもの
と同様である。しかし、下型２３及び上型２５は、構造
が改善されると共に、材質が変更されている。また、各
ヒータ２７，２９の装備形態にも、工夫がこらされてい
る。In the thermoforming die 21 of the present embodiment, the preformed body to be thermoformed and the middle die 5 are the same as the conventional ones. However, the lower mold 23 and the upper mold 25 have improved structures and changed materials. Further, the heaters 27 and 29 are also devised in the form of equipment.
【００１６】本実施の形態における下型２３及び上型２
５は、所定の板厚の先端部２３ａ，２５ａと、この先端
部２３ａ，２５ａの後方に空洞部２３ｂ，２５ｂを画成
する筒部２３ｃ，２５ｃとを備えた有頭筒状構造に形成
されている。そして、下部ヒータ２７及び上部ヒータ２
９は、熱源としてシーズヒータを利用する点では従来と
同様であるが、下部ヒータ２７は下型２３の先端部２３
ａに埋設装備し、上部ヒータ２９は上型２５の先端部２
５ａに埋設装備している。Lower mold 23 and upper mold 2 in the present embodiment
5 is formed in a headed tubular structure having tip portions 23a, 25a having a predetermined plate thickness and tubular portions 23c, 25c defining cavity portions 23b, 25b behind the tip portions 23a, 25a. ing. Then, the lower heater 27 and the upper heater 2
9 is similar to the conventional one in that a sheathed heater is used as a heat source, but the lower heater 27 has a tip 23 of the lower mold 23.
The upper heater 29 is installed in the a.
It is embedded in 5a.
【００１７】また、上型２５及び下型２３は、従来のよ
うな鋼材ではなく、アルミニウム合金をマトリックスと
し、且つ、セラミックス微粉末を分散して強化材にした
複合材料（ＭＭＣ）により形成している。強化材として
配合するセラミックス微粉末は、ＳｉＣ，Ａｌ2 Ｏ3 ，
ＡｌＮ等で、配合比は重量比で３０〜７０％の範囲で調
整される。例えば、Ａｌ2 Ｏ3 が５０％重量比で分散さ
れる。Further, the upper die 25 and the lower die 23 are formed of a composite material (MMC) in which aluminum alloy is used as a matrix and ceramic fine powder is dispersed to be a reinforcing material, instead of the conventional steel material. There is. The ceramic fine powder to be blended as a reinforcing material is SiC, Al 2 O 3 ,
The compounding ratio of AlN or the like is adjusted in the range of 30 to 70% by weight. For example, Al 2 O 3 is dispersed at a 50% weight ratio.
【００１８】以上に説明した熱成形用金型２１では、上
部ヒータ２９と摩擦材生地３との間の離間距離が、上型
２５の先端部２５ａの上部ヒータ２９を埋設した部位の
板厚ｔ１となり、上型２５の上面に別体の上部ヒータを
重ねていた従来の熱成形用金型と比較すると、上部ヒー
タ２９と摩擦材生地３との間の離間距離が大幅に低減さ
れる。しかも、上型２５において、先端部２５ａの背面
は、空洞部２５ｂで断熱性を発揮するため、上部ヒータ
２９の発生する熱エネルギーは、上型２５後端部側への
熱の散逸が抑止されて上型２５の先端部２５ａに集中作
用し、上型２５の先端部２５ａから速やかに、且つ効率
よく、摩擦材生地３に伝導される。In the thermoforming mold 21 described above, the separation distance between the upper heater 29 and the friction material cloth 3 is such that the plate thickness t1 of the tip portion 25a of the upper die 25 where the upper heater 29 is embedded. Therefore, as compared with a conventional thermoforming mold in which a separate upper heater is stacked on the upper surface of the upper mold 25, the distance between the upper heater 29 and the friction material cloth 3 is greatly reduced. Moreover, in the upper die 25, the back surface of the tip portion 25a exhibits heat insulation in the hollow portion 25b, so that the heat energy generated by the upper heater 29 is prevented from being dissipated to the rear end portion of the upper die 25. Is concentrated on the tip portion 25a of the upper die 25, and is quickly and efficiently conducted to the friction material cloth 3 from the tip portion 25a of the upper die 25.
【００１９】下型２３の場合も、上型２５の場合と同様
に、下部ヒータ２７と摩擦材生地３の裏面のプレッシャ
ープレート４との間の離間距離が先端部２３ａにおける
板厚ｔ２に短縮され、先端部２３ａの後方に形成された
空洞部２５ｂの断熱性により、下部ヒータ２７の発生す
る熱エネルギーの先端部２３ａへの集中作用が実現され
る。従って、下部ヒータ２７の発生する熱エネルギー
は、下型２３の先端部２３ａから速やかに、且つ効率よ
く、プレッシャープレート４を介して摩擦材生地３に伝
導される。Also in the case of the lower die 23, as in the case of the upper die 25, the distance between the lower heater 27 and the pressure plate 4 on the back surface of the friction material cloth 3 is shortened to the plate thickness t2 at the tip portion 23a. Due to the heat insulating property of the hollow portion 25b formed behind the tip portion 23a, the heat energy generated by the lower heater 27 is concentrated on the tip portion 23a. Therefore, the thermal energy generated by the lower heater 27 is quickly and efficiently conducted from the tip portion 23 a of the lower mold 23 to the friction material cloth 3 via the pressure plate 4.
【００２０】従って、熱成形する摩擦材生地３を上部ヒ
ータ２９及び下部ヒータ２７によって所定温度に加熱す
る際に、上型２５及び下型２３上での熱損失が共に大幅
に低減され、熱成形工程における消費エネルギーの大幅
な節約を実現し、熱成形コストを低減させることができ
る。Therefore, when the friction material material 3 to be thermoformed is heated to a predetermined temperature by the upper heater 29 and the lower heater 27, the heat loss on the upper die 25 and the lower die 23 is greatly reduced, and the thermoforming is performed. A great savings in energy consumption in the process can be realized and the thermoforming cost can be reduced.
【００２１】また、本実施の形態の場合、上型２５及び
下型２３を、アルミニウム合金をマトリックスとし、セ
ラミックス微粉末を分散した複合材料により形成したの
で、この材料自体が鋼材よりも優れた熱伝導性を有する
ため、上型及び下型を鋼材で形成していた従来の熱成形
用金型と比較すると、金属材料自体の熱伝導性が向上し
た分だけ、上型２５及び下型２３における熱損失を更に
低減することができ、前述した上型２５及び下型２３の
構造に基づく消費エネルギーの節約効果との相乗によ
り、熱成形工程における消費エネルギーの節約を更に徹
底することができ、熱成形コストの大幅な低減が可能に
なる。Further, in the case of the present embodiment, since the upper mold 25 and the lower mold 23 are formed of the composite material in which the aluminum alloy is used as the matrix and the fine ceramic powder is dispersed, the material itself is superior in heat resistance to the steel material. As compared with a conventional thermoforming die in which the upper die and the lower die are made of a steel material because they have conductivity, the upper die 25 and the lower die 23 have the same thermal conductivity as the metallic material itself. The heat loss can be further reduced, and the energy saving effect based on the structures of the upper mold 25 and the lower mold 23 described above can be synergized to further reduce the energy consumption in the thermoforming process. It is possible to significantly reduce the molding cost.
【００２２】なお、本実施の形態では、各ヒータと摩擦
材生地との間の熱伝導効率を高く維持できるため、上下
のヒータ２７，２９の容量の低減により装置のコンパク
ト化やコスト低減を図ることもできる。また、熱伝導効
率の向上によって、摩擦材生地を所望の温度まで昇温さ
せる際の所要時間の短縮によって、熱成形の生産性を向
上させることもできる。In this embodiment, since the heat conduction efficiency between each heater and the friction material cloth can be kept high, the capacity of the upper and lower heaters 27 and 29 can be reduced to make the apparatus compact and reduce the cost. You can also Further, by improving the heat conduction efficiency, it is possible to improve the productivity of thermoforming by shortening the time required for raising the friction material cloth to a desired temperature.
【００２３】なお、本発明の熱成形用金型は、上記した
一実施の形態に限定されるものでなく、構成部品の適宜
な変形，改良、材質の変更等が可能である。例えば、前
述の一実施の形態では、下型２３と上型２５の双方を、
先端部２３ａ，２５ａにヒータを埋設し、先端部２３
ａ，２５ａの後方には空洞部２３ｂ，２５ｂを備えた構
造とした。しかし、摩擦材生地３との離間距離が大きく
短縮されるのは、加圧時の変位のために型が大型化する
上型であるため、少なくとも、上型２５を実施の形態の
構成にすれば、下型は従来と同様の構成としても、熱成
形時における消費エネルギーの節約という目的は達成す
ることができる。The thermoforming mold of the present invention is not limited to the above-described embodiment, and appropriate modifications, improvements, and changes in the material of the components can be made. For example, in the above-described embodiment, both the lower mold 23 and the upper mold 25 are
A heater is embedded in the tip portions 23a and 25a, and the tip portion 23a
The structure is provided with cavities 23b and 25b behind a and 25a. However, the reason why the distance from the friction material cloth 3 is greatly shortened is the upper mold in which the mold becomes large due to the displacement at the time of pressurization. Therefore, at least the upper mold 25 may have the configuration of the embodiment. For example, even if the lower mold has the same structure as the conventional one, the purpose of saving energy consumption during thermoforming can be achieved.
【００２４】また、本発明の熱成形用金型の用途は、車
両用のブレーキ装置の摩擦材の熱成形に限らない。例え
ば、産業機械等で使用する各種ブレーキ装置における摩
擦材の熱成形にも応用可能である。Further, the use of the thermoforming die of the present invention is not limited to the thermoforming of the friction material of the vehicle brake device. For example, it can be applied to thermoforming of friction materials in various brake devices used in industrial machines and the like.
【００２５】[0025]
【発明の効果】以上に説明したように、本発明の熱成形
用金型によれば、アルミニウム合金をマトリックスと
し、セラミックス微粉末を分散して強化材とした複合材
料は、鋼材よりも優れた熱伝導性を有するため、上型及
び下型を鋼材で形成していた従来の熱成形用金型と比較
すると、金属材料自体の熱伝導性が向上した分だけ、上
型及び下型における熱損失を低減することができる。従
って、熱成形工程における消費エネルギーの節約を図っ
て、熱成形コストの大幅な低減が可能になる。As described above, according to the thermoforming mold of the present invention, the composite material in which the aluminum alloy is used as the matrix and the ceramic fine powder is dispersed to be the reinforcing material is superior to the steel material. Since it has thermal conductivity, compared with the conventional thermoforming molds in which the upper and lower molds are made of steel, the heat in the upper and lower molds is The loss can be reduced. Therefore, it is possible to save energy consumption in the thermoforming process and significantly reduce the thermoforming cost.
【００２６】また、請求項２に記載した本発明の熱成形
用金型によれば、上部ヒータと摩擦材生地との間の離間
距離が、上部ヒータを埋設した上型の先端部の部位の板
厚ｔ１となり、上型上面に別体の上部ヒータを重ねてい
た従来の熱成形用金型と比較すると、上部ヒータと摩擦
材生地との間の離間距離が大幅に低減される。しかも、
上型において、先端部の背面は、空洞部で断熱性を発揮
するため、上部ヒータの発生する熱エネルギーは、上型
後端部側への熱の散逸が抑止されて上型の先端部に集中
作用し、上型の先端部から速やかに、且つ、効率よく、
摩擦材生地に伝導される。従って、熱成形する摩擦材生
地の上面を上部ヒータによって所定温度に加熱する際
に、上型上での熱損失が大幅に低減され、熱成形工程に
おける消費エネルギーを節約して、熱成形コスト低減を
図ることのできるFurther, according to the thermoforming mold of the present invention as defined in claim 2, the distance between the upper heater and the friction material cloth is determined by the upper end of the upper heater in which the upper heater is embedded. The plate thickness is t1, and the separation distance between the upper heater and the friction material cloth is significantly reduced as compared with the conventional thermoforming mold in which the separate upper heater is stacked on the upper surface of the upper mold. Moreover,
In the upper mold, the back surface of the tip part exhibits heat insulation in the cavity, so the heat energy generated by the upper heater is suppressed at the tip part of the upper mold by suppressing the dissipation of heat to the rear end side of the upper mold. Concentrated action, quickly and efficiently from the tip of the upper mold,
Conducted by the friction material. Therefore, when the upper surface of the friction material material to be thermoformed is heated to a predetermined temperature by the upper heater, the heat loss on the upper mold is significantly reduced, the energy consumption in the thermoforming process is saved, and the thermoforming cost is reduced. Can be
【図１】本発明に係る熱成形用金型の一実施の形態の縦
断面図である。FIG. 1 is a vertical sectional view of an embodiment of a thermoforming die according to the present invention.
【図２】従来の熱成形用金型の縦断面図である。FIG. 2 is a vertical sectional view of a conventional thermoforming die.
３ 摩擦材生地（予備成形体） ４ プレッシャープレート ５ 中型 ５ａ 生地収容部 ２１ 熱成形用金型 ２３ 下型 ２３ａ 先端部 ２３ｂ 空洞部 ２３ｃ 筒部 ２５ 上型 ２５ａ 先端部 ２５ｂ 空洞部 ２５ｃ 筒部 ２７ 下部ヒータ ２９ 上部ヒータ 3 Friction material cloth (preform) 4 Pressure plate 5 Medium 5a Dough storage section 21 Thermoforming mold 23 Lower mold 23a Tip 23b cavity 23c tube 25 Upper mold 25a tip 25b cavity 25c tube 27 Lower heater 29 Upper heater
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3J058 BA61 BA80 CA42 EA08 EA14 FA01 GA62 GA64 GA65 GA92 4F202 AH05 AJ02 AJ06 AJ07 CA17 CB01 CD30 CN01 CN22 4F204 AH17 AJ02 AJ06 FA01 FB01 FF01 FN15 FQ15 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 3J058 BA61 BA80 CA42 EA08 EA14 FA01 GA62 GA64 GA65 GA92 4F202 AH05 AJ02 AJ06 AJ07 CA17 CB01 CD30 CN01 CN22 4F204 AH17 AJ02 AJ06 FA01 FB01 FF01 FN15 FQ15
Claims (2)
地収容部に装填された摩擦材生地を押える下型と、昇降
可能に装備されると共に降下時に前記生地収容部に嵌入
して前記摩擦材生地を加圧する上型と、前記上型及び下
型を所定温度に加熱する上部及び下部ヒータとを備え、
加熱環境下で加圧を行うことで中型内に装填した摩擦材
生地を所定形状の摩擦材に成形する熱成形用金型であっ
て、 前記上型及び下型を、アルミニウム合金をマトリックス
とし、セラミックス微粉末を分散した複合材料により形
成したことを特徴とする熱成形用金型。1. A middle die having a fabric containing portion formed therein, a lower die for pressing the friction material fabric loaded in the fabric containing portion, and a lower die capable of moving up and down and fitted into the fabric containing portion when descending. An upper mold for pressurizing the friction material cloth, and an upper heater and a lower heater for heating the upper mold and the lower mold to a predetermined temperature are provided,
A thermoforming mold for molding a friction material dough loaded into a medium mold into a friction material having a predetermined shape by applying pressure under a heating environment, wherein the upper mold and the lower mold are made of an aluminum alloy matrix, A thermoforming die formed of a composite material in which fine ceramic powder is dispersed.
端部とこの先端部の後方に空洞部を画成する筒部とを備
えた有頭筒状構造に形成し、 且つ、前記上部ヒータを、前記上型の先端部に埋設装備
したことを特徴とする請求項１記載の熱成形用金型。2. At least the upper die is formed into a headed tubular structure having a tip portion having a predetermined plate thickness and a tubular portion defining a cavity behind the tip portion, and the upper portion. The thermoforming mold according to claim 1, wherein a heater is embedded in the tip of the upper mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001216771A JP2003025359A (en) | 2001-07-17 | 2001-07-17 | Thermoforming mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001216771A JP2003025359A (en) | 2001-07-17 | 2001-07-17 | Thermoforming mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003025359A true JP2003025359A (en) | 2003-01-29 |
Family
ID=19051206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001216771A Pending JP2003025359A (en) | 2001-07-17 | 2001-07-17 | Thermoforming mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003025359A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006334916A (en) * | 2005-06-02 | 2006-12-14 | Nisshinbo Ind Inc | Friction material manufacturing method |
-
2001
- 2001-07-17 JP JP2001216771A patent/JP2003025359A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006334916A (en) * | 2005-06-02 | 2006-12-14 | Nisshinbo Ind Inc | Friction material manufacturing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5888645A (en) | Method and apparatus for manufacturing an article of a composite material | |
| CN102119289B (en) | Brake pad for braking systems, in particular for disc brakes | |
| JP2010048387A (en) | Brake pads | |
| KR100211296B1 (en) | Manufacturing method of disc brake pad | |
| CA2656422A1 (en) | Resin transfer molding device and resin transfer molding method | |
| CN105122539B (en) | heat exchange components | |
| JP2011510502A (en) | Heat sink and method for manufacturing the heat sink | |
| CN100556264C (en) | A kind of preparation method of graphite-metal compound heat dispersion base material | |
| CN108354502A (en) | A kind of toilet seat and preparation method | |
| CN105729827B (en) | A kind of mechanical pressurization method and apparatus of microwave curing composite material | |
| CN101984112B (en) | A copper-reinforced aluminum composite material with high thermal conductivity and its preparation method | |
| JP2012211675A (en) | Brake pad | |
| CN113929480B (en) | A kind of C/SiC ceramic matrix composite material and preparation method thereof | |
| JP6610936B2 (en) | Disc brake pad and manufacturing method thereof | |
| JP2003025359A (en) | Thermoforming mold | |
| CN102212730A (en) | Low-Si SiCp/Al composite material and preparation method thereof | |
| JP2013057337A (en) | Brake pad, and method of manufacturing the same | |
| US20040035657A1 (en) | Method for producing ceramic brake disks from bmc | |
| CN109203464B (en) | Post-curing method and device for fiber-reinforced thermosetting composite material 3D printing component | |
| JPH11322960A (en) | Friction material | |
| KR20090040403A (en) | Manufacturing Method of Fuel Cell Separator and Fuel Cell Separator | |
| JP2013053688A (en) | Brake pad | |
| JP2003039467A (en) | Thermoforming mold | |
| JP2706988B2 (en) | Press molding method of fiber-reinforced plastic molded body and heat insulating material used therefor | |
| CN107911888B (en) | Heat storage heating body and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RD04 | Notification of resignation of power of attorney |
Effective date: 20060324 Free format text: JAPANESE INTERMEDIATE CODE: A7424 |
|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20060710 |
|
| A072 | Dismissal of procedure |
Effective date: 20060815 Free format text: JAPANESE INTERMEDIATE CODE: A073 |
|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20071127 |