JP2690452B2 - Reverse rubber mold manufacturing method and mold manufacturing method - Google Patents
Reverse rubber mold manufacturing method and mold manufacturing methodInfo
- Publication number
- JP2690452B2 JP2690452B2 JP5331349A JP33134993A JP2690452B2 JP 2690452 B2 JP2690452 B2 JP 2690452B2 JP 5331349 A JP5331349 A JP 5331349A JP 33134993 A JP33134993 A JP 33134993A JP 2690452 B2 JP2690452 B2 JP 2690452B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- rubber
- reversal
- silicon rubber
- manufacturing
- 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.)
- Expired - Fee Related
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】 本発明は反転後の変形及び歪み
発生の少ない、シリコンゴムによる反転ゴム型及び金型
を原型より作成するための反転ゴム型製造方法および金
型製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a reverse rubber mold and a mold for manufacturing a reverse rubber mold and a mold made of silicon rubber from a prototype, which is less likely to cause deformation and distortion after reversal. .
【０００２】[0002]
【従来の技術】 ゴム製の人形等を製造する場合、通常
まず原型より反転型を作成する。次いでその反転型より
石膏等による鋳型を作成し、その鋳型から複製品製造に
用いる金型を製造する。上記の製造工程において、原型
より反転型を作成する際の材料として、転写性に優れか
つその柔軟性による離型性の良さからシリコンゴムを使
う場合が多い。シリコンゴムは通常、主剤と硬化剤を混
練し減圧、脱泡した後、図３に示す様に、下ブタ２と枠
３から成り、所定位置に原型１を設置した反転型作成用
の容器１４に流し込むという方法で使われることが多
い。2. Description of the Related Art When manufacturing a rubber doll or the like, an inverted mold is usually first prepared from a master mold. Next, a mold made of gypsum or the like is prepared from the inverted mold, and a mold used for manufacturing duplicates is manufactured from the mold. In the above manufacturing process, silicon rubber is often used as a material for forming an inverted mold from a master mold because of its excellent transferability and good releasability due to its flexibility. Silicon rubber is usually a container 14 for making a reversal mold in which a base 1 and a curing agent are kneaded, decompressed, and defoamed, and then, as shown in FIG. Often used by pouring into.
【０００３】 しかしながら、シリコンゴムは主剤と硬
化剤の混練後、図８に示すように段階的に液状収縮、ゲ
ル状収縮、硬化収縮を伴いつつ硬化するため、原型のま
まの寸法精度を有する反転型を得ることは困難である。
これに対処するために、通常は図４に示す様に反転型で
のシリコンゴム層部４を極力少なくし、石膏やエポキシ
樹脂、金属等の寸法変化の少ない裏打ち材５を設置する
方法がとられることが多い。However, since the silicone rubber is kneaded with the main agent and the curing agent, the silicone rubber is gradually cured with liquid shrinkage, gel shrinkage and curing shrinkage as shown in FIG. It is difficult to get the mold.
In order to cope with this, usually, as shown in FIG. 4, the method of installing the backing material 5 such as gypsum, epoxy resin, metal or the like having a small dimensional change by reducing the silicon rubber layer portion 4 of the reversal type as much as possible. It is often done.
【０００４】 しかし、この場合でも原型の絶対寸法に
対するゴム層厚が無視できないほど大きくなってしまう
場合や、反転型の施工上もしくは型構造上裏打ち材を設
置することが出来ない場合、図５に示す様な反転型での
反り発生や、図６に示す様な割型構造の場合の上型４
１、下型４２合わせ時の形状ズレの発生等の問題が起こ
り易かった。また別の対応として、シリコンゴムの上記
各収縮量そのものを少なくするために、シリコンゴム内
に寸法変化の少ない異物（フィラー）、例えば金属やガ
ラス、樹脂等の粉体もしくは粒体を混入させる方法がと
られる場合があるが、この方法によるとシリコンゴム本
来の弾力性が失われ易く、このシリコンゴム反転型を用
いて複製品や鋳造用の鋳型を作成する場合に、離型性
（脱型性）が悪くなり、型折れや型欠け等の問題が発生
しやすかった。However, even in this case, when the rubber layer thickness with respect to the absolute size of the master becomes too large to be ignored, or when the backing material cannot be installed on the construction of the reversal mold or on the mold structure, FIG. Warpage in the reverse type as shown, or the upper die 4 in the case of split type structure as shown in FIG.
1. Problems such as a shape shift when the lower mold 42 was aligned were likely to occur. In addition, as another measure, in order to reduce the respective shrinkage amounts of the silicone rubber itself, a method of mixing a foreign substance (filler) with a small dimensional change, for example, powder or granules of metal, glass, resin, etc., into the silicone rubber However, according to this method, the original elasticity of silicone rubber is likely to be lost, and when using this silicone rubber inversion mold to make replicas or casting molds, releasability (demolding Property), and problems such as mold breakage and chipping were likely to occur.
【０００５】[0005]
【発明が解決しようとする課題】 本発明は上記した従
来の問題点を解決し、基本的にこれまでのゴム型作成方
法に準じた方法にて、原型から寸法精度のより高いシリ
コンゴムによる反転ゴム型、金型を製造する方法を提供
することを目的とする。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the related art, and basically uses a method according to the conventional rubber mold making method to reverse the original mold with silicone rubber having higher dimensional accuracy. An object of the present invention is to provide a method for manufacturing a rubber mold and a mold.
【０００６】[0006]
【課題を解決するための手段】 本発明によれば、シリ
コンゴムを用いて原型より反転型を作成するに際して、
反転型作成用の容器を用い、該容器の原型側と反対側の
位置に補給部を設けて、シリコンゴム硬化時の液状収縮
及びゲル状収縮による収縮分のシリコンゴムを補給する
ことを特徴とする反転ゴム型製造方法（発明Ａ）が提供
される。 According to the present invention, when a reversal mold is made from a master mold using silicon rubber,
Use a container for making an inverted mold and place it on the side opposite to the prototype side of the container.
A reversal rubber mold manufacturing method (Invention A) is provided, in which a replenishment portion is provided at a position to replenish the silicon rubber for the amount of contraction due to liquid contraction and gel contraction during curing of the silicone rubber .
【０００７】 また本発明によれば、シリコンゴムを用
いて原型より反転型を作成するに際して、反転型作成用
の容器を用い、該容器の通気性を、原型側が高くなるよ
うに形成したことを特徴とする反転ゴム型製造方法（発
明Ｂ）が提供される。また、この反転ゴム製造方法（発
明Ｂ）は発明Ａと組み合わせて用いられることが好まし
い。また本発明によれば、シリコンゴムを用いて原型よ
り反転型を作成するに際して、硬化が終了し寸法が略安
定化したシリコンゴムチップをシリコンゴム未硬化部内
に混入することを特徴とする反転ゴム型製造方法（発明
Ｃ）が提供される。Further, according to the present invention, when a reversal mold is made from a master using silicon rubber, a container for making the reversal mold is used, and the air permeability of the container is increased so that the master side is higher. A featured reverse rubber mold manufacturing method (Invention B) is provided. Further, it is preferable that this method for producing a reversed rubber (Invention B) is used in combination with Invention A. Further, according to the present invention, when a reversal mold is made from a master using silicon rubber, a reversal rubber mold characterized by mixing a silicon rubber chip, which has been cured and whose dimensions are substantially stabilized, into the uncured portion of the silicon rubber. A manufacturing method (Invention C) is provided.
【０００８】 さらに本発明によれば、上記の方法のい
ずれかにより反転ゴム型を製造した後、 該反転ゴム型
から鋳型を作成し、次いで該鋳型より複製品製造用の金
型を製造することを特徴とする金型製造方法（発明Ｄ）
が提供される。Further, according to the present invention, after manufacturing a reversal rubber mold by any of the above methods, a mold is created from the reversal rubber mold, and then a mold for producing a duplicate product is manufactured from the mold. Mold manufacturing method characterized by (Invention D)
Is provided.
【０００９】 以下、本発明を詳細に説明する。まず、
発明Ａについて、図１に示す最も単純な裏打ち無しの注
型法による片面取りシリコンゴム反転型を用いて説明す
る。またシリコンゴムを補給する手段として補給部を設
ける場合について述べる。図１において、１４は反転型
作成用の容器であり、容器１４は、所定の位置に原型１
が配置された下ブタ２に枠３が取り付けられ、その頂部
の中央部に孔部１５を有する上ブタ６が載置され、その
孔部１５を囲むようにシリコンゴム補給部用枠７が立設
され、その上端に外気遮断膜８が取り付けられて構成さ
れている。このようにして構成される容器１４内に、主
剤と硬化剤を混練し脱泡したシリコンゴム４の必要量を
流し込み、注型終了後、補給部用枠７上に外気遮断膜８
をかぶせ、所定の時間放置しシリコンゴム４を硬化させ
る。硬化終了後下ブタ２と原型１を取り除き補給部９を
必要に応じて切断除去することで反転型が得られる。Hereinafter, the present invention will be described in detail. First,
Invention A will be described using the simplest single-chamfered silicone rubber reversal mold shown in FIG. Further, a case where a replenishment section is provided as a means for replenishing silicone rubber will be described. In FIG. 1, reference numeral 14 is a container for making an inverted mold, and the container 14 is placed at a predetermined position in the prototype 1
The frame 3 is attached to the lower pig 2 in which is placed, the upper pig 6 having the hole 15 at the center of the top thereof is placed, and the frame 7 for the silicon rubber replenishing unit is set up so as to surround the hole 15. The external air blocking film 8 is attached to the upper end thereof. The required amount of the silicone rubber 4 which is prepared by kneading the main component and the curing agent and defoaming is poured into the container 14 thus configured, and after the casting is completed, the outside air blocking film 8 is placed on the replenishment part frame 7.
And leave it for a predetermined time to cure the silicone rubber 4. After the curing is completed, the lower mold 2 and the master 1 are removed, and the replenishment part 9 is cut and removed as required, whereby a reversal mold is obtained.
【００１０】 シリコンゴム補給部量は反転型製品部の
シリコンゴム量の１０〜６０％程度でかつ補給部高さは
製品部高さの２０〜８０％程度であることが望ましく、
補給部の設置位置、数、大きさ等は原型の形状、シリコ
ンゴム材質に応じて適宜設定することができる。上記の
ことは裏打ち材をつけた場合でも同様であり、例えば図
２のように裏打ち材５の内部にシリコンゴムを補給する
ための貫通部９を随所に設置することでさらに高い反転
精度が得られることになるのである。It is desirable that the amount of silicone rubber replenishing part is about 10 to 60% of the amount of silicon rubber of the reversal type product part, and the height of the replenishing part is about 20 to 80% of the product part height.
The installation position, number, size, etc. of the replenishment section can be appropriately set according to the shape of the prototype and the silicone rubber material. The above is the same when a backing material is attached. For example, as shown in FIG. 2, by providing a penetrating portion 9 for replenishing silicon rubber inside the backing material 5 everywhere, a higher reversal accuracy can be obtained. It will be done.
【００１１】 製品部の液状収縮及びゲル状収縮分のシ
リコンゴムを補給することにより、反転型にて変形等が
発生するのを防止するのが発明Ａであるが、さらに発明
Ｂを併用すると効果的である。縮合型シリコンゴムは外
気との接触が多い程硬化速度が大きくなる。この特性を
利用して、原型側を優先的に硬化させるために下ブタ２
及び枠３には通気性の高い材質、例えば木材やダンボー
ルを用い、上ブタ６、補給部用枠７、外気遮断膜８には
通気性の低い材質、例えば金属、樹脂、ビニール等を用
いることにより補給効果を充分に発揮させることができ
る。このように、枠の通気性を変え、シリコンゴム硬化
方向として原型側から反対側への指向性を持たせること
が発明Ｂの要旨である。The invention A prevents the occurrence of deformation or the like in the reversal type by replenishing the liquid portion with the liquid-state shrinkage and the gel-like shrinkage of the product part. Target. Condensation type silicone rubber has a higher curing rate as the amount of contact with the outside air increases. Utilizing this property, the lower lid 2 is used to preferentially cure the prototype side.
The frame 3 is made of a material having high air permeability, for example, wood or cardboard, and the upper lid 6, the frame 7 for the replenishment section, and the outside air blocking film 8 are made of materials having low air permeability, such as metal, resin, vinyl, etc. The replenishment effect can be fully exerted by. Thus, it is the gist of Invention B to change the air permeability of the frame so that the silicone rubber curing direction has a directivity from the prototype side to the opposite side.
【００１２】 次に発明Ｃについて説明する。この発明
Ｃにおいては、未硬化シリコンゴム母相内に、既に硬化
が終了し寸法が略安定した既硬化シリコンゴムのチップ
を混入させ、収縮量を減少させたことを特徴とする。既
硬化シリコンゴム材質は基本的には母相となる未硬化シ
リコンゴムと同材であることが望ましいが、母相との密
着性、反応性等の問題が無ければ異種のシリコンゴムで
あっても良い。そのチップの大きさは、反転型作成後の
ゴム層内に均一に分散し、かつ原型の細部形状の反転を
妨げない粒度が好ましく、その混入量は原型への注型時
の作業性及び転写性上問題にならない粘度となるように
設定するのが好ましい。例えばチップ粒径は原型最大長
の１／１０〜１／１００程度、チップ添加量は未硬化相
（母相）１００部に対し１０部〜１００部程度である。Next, the invention C will be described. The invention C is characterized in that the uncured silicone rubber matrix is mixed with chips of uncured silicone rubber which has already been hardened and whose dimensions are substantially stable, to reduce the amount of shrinkage. Basically, it is desirable that the material of the uncured silicone rubber is the same as the material of the uncured silicone rubber that is the mother phase, but if there is no problem with the adhesion or reactivity with the mother phase, it may be a different type of silicone rubber. Is also good. The size of the chip is preferably a particle size that is uniformly dispersed in the rubber layer after the inversion mold is made and does not prevent the inversion of the detailed shape of the master mold. The amount of the mixture is the workability at the time of casting to the master mold and transfer. It is preferable to set the viscosity so that there is no problem in terms of sex. For example, the chip particle size is about 1/10 to 1/100 of the maximum length of the master, and the chip addition amount is about 10 to 100 parts with respect to 100 parts of the uncured phase (mother phase).
【００１３】 作業手順は以下の通りである。母相とな
るシリコンゴム主剤と硬化剤を混練した後、既硬化シリ
コンゴムチップを混練し脱泡を行う。これを原型をセッ
トした枠内に充填し、必要な場合にはこの状態でさらに
脱泡を行う。その他は基本的に従来の作業と同様であ
る。これにより弾力性を損なうことなくシリコンゴムの
硬化時の各収縮を少なくすることが可能となり、その結
果反転型の精度向上が達成されるわけである。さらにチ
ップ用の原材料として廃棄ゴムを利用すれば廃物利用が
可能となり、反転型の精度向上だけでなくコスト的にも
安価なものが作成できるというメリットがある。The work procedure is as follows. After kneading the main component of silicone rubber and the curing agent, the uncured silicone rubber chips are kneaded to defoam. This is filled in the frame in which the prototype is set, and if necessary, defoaming is further performed in this state. Others are basically the same as the conventional work. As a result, it is possible to reduce each contraction of the silicone rubber during curing without impairing its elasticity, and as a result, the precision of the reversal type is improved. Furthermore, if waste rubber is used as a raw material for chips, waste materials can be used, and there is an advantage that not only the precision of the reversing type can be improved but also a low cost one can be produced.
【００１４】 さらに、上記した方法により製造された
反転ゴム型を用いて、複製品製造用の金型を次のように
製造する。すなわち図７に示すように、反転ゴム型から
石膏等による鋳型１１を作り、それをもとに複製品１３
の製造に直接用いる金型１２を作成する。発明Ａ〜Ｃに
より提供される方法を用いて作成した反転ゴム型を用い
ることにより、寸法精度の高い金型を得ることが可能と
なる。Further, using the reversal rubber mold manufactured by the above method, a mold for manufacturing a duplicate product is manufactured as follows. That is, as shown in FIG. 7, a mold 11 made of gypsum or the like is made from a reverse rubber mold, and a replica 13 is made based on the mold 11.
A mold 12 to be directly used for manufacturing is manufactured. By using the reversal rubber mold produced by the method provided by the inventions A to C, it becomes possible to obtain a mold with high dimensional accuracy.
【００１５】[0015]
【実施例】 以下、本発明を実施例に基づいて更に詳細
に説明するが、本発明はこれらの実施例に限定されるも
のではない。EXAMPLES Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples.
【００１６】（実施例１）図９に示す裏打ち無しの注型
法を用いて行った。また本実施例は、上型、下型より成
る２つの割型を別々に作成した後接合し人形を作る場合
であって、２個の原型から同時にそれぞれの反転ゴム型
を作成する２個同時入れ込みの場合の例である。(Example 1) A casting method without lining shown in FIG. 9 was used. Further, this embodiment is a case where two split molds including an upper mold and a lower mold are separately prepared and then joined to each other to make a doll, and two inversion rubber molds are simultaneously prepared from two prototypes. This is an example of insertion.
【００１７】 製造条件は次の通りとした。原型１の材
質はワックスで、寸法は約４５×１０×１０（ｍｍ）と
約４５×２５×１０（ｍｍ）であった。下ブタ２の材質
は上型については油粘土、下型についてはシリコンゴム
上型を用いた。枠３の材質はダンボールで内寸は縦６０
×横７０×深さ６０（ｍｍ）であった。上ブタ６の材質
はアルミ合金板を用いた。シリコンゴム補給部枠７の材
質には塩化ビニルパイプを用い、寸法は直径３０ｍｍ、
高さ４０ｍｍであった。外気遮断膜８にはビニールシー
トを用いた。The manufacturing conditions were as follows. The material of the prototype 1 was wax, and the dimensions were about 45 × 10 × 10 (mm) and about 45 × 25 × 10 (mm). The material of the lower pig 2 was an oil clay for the upper mold and a silicone rubber upper mold for the lower mold. The material of the frame 3 is cardboard and the inner dimensions are 60 vertical.
It was × width 70 × depth 60 (mm). The material of the upper lid 6 was an aluminum alloy plate. A vinyl chloride pipe is used as the material of the silicone rubber replenishment section frame 7 and has a diameter of 30 mm.
The height was 40 mm. A vinyl sheet was used for the outside air blocking film 8.
【００１８】 以上の条件により、図９に示す注型法に
沿って、１箇所のシリコンゴム補給部を設けた反転型作
成用の容器１４を用い、原型１の反転型を作成した。シ
リコンゴムは主剤として東芝シリコンＴＳＥ３５０、硬
化剤としてＹＣ６８１４を用い、主剤１００部中に１部
の硬化剤を添加し使用した。Under the above conditions, the reversal mold of the master 1 was prepared according to the casting method shown in FIG. 9 using the container 14 for preparing the reversal mold provided with one silicone rubber supply portion. The silicone rubber used was Toshiba Silicon TSE350 as the main agent, YC6814 as the curing agent, and 1 part of the curing agent was added to 100 parts of the main agent.
【００１９】 この反転型を用いて石膏にて原型の複製
品を作成した場合、接合部におけるズレの発生はほとん
ど無く、平均で０．０３ｍｍ以下であった。これに対し
補給部を設置せずに、前記と同様な条件で反転型を作成
した場合、複製品の接合部におけるズレ量は平均で０．
１０ｍｍ程度であり、補給部を設けた場合に比べ約３倍
であった。When a replica of the prototype was made of gypsum using this reversal mold, there was almost no deviation at the joint, and the average was 0.03 mm or less. On the other hand, when the reversal type was prepared under the same conditions as above without installing the replenishment part, the deviation amount at the joint part of the duplicated product was 0.
It was about 10 mm, which was about three times as large as when the replenishment section was provided.
【００２０】（実施例２）実施例１と同様に、２個同時
入れ込みにより上型、下型を別個に作成した後接合し、
人形を作る場合の例である。図１０に示す反転型作成用
の容器１４に、既硬化シリコンゴムチップを混入したシ
リコンゴムを注入し、原型１の反転型を作成した。(Embodiment 2) As in Embodiment 1, two upper molds and a lower mold are separately prepared by simultaneous insertion, and then joined.
This is an example of making a doll. Silicon rubber mixed with uncured silicone rubber chips was poured into the container 14 for making an inverted mold shown in FIG.
【００２１】 なお下ブタ２、枠３、原型１の材質、寸
法、シリコンゴム４の材質は実施例１と同じとした。既
硬化シリコンゴムチップの材質は母剤と同じであり、粒
径２〜３ｍｍのものを母剤１００部に対し４０部加え使
用した。この反転型を用いて石膏にて原型の複製品を作
成した場合、複製品の接合部におけるズレ発生量は平均
で０．０５ｍｍ程度であり、既硬化シリコンゴムチップ
を混入させなかった場合の平均ズレ発生量、約０．１０
ｍｍに比べ約１／２であった。The materials and dimensions of the lower lid 2, the frame 3, the master 1 and the material of the silicone rubber 4 were the same as those in the first embodiment. The material of the uncured silicone rubber chip was the same as that of the base material, and 40 parts of 100 parts of the base material having a particle diameter of 2 to 3 mm was used. When a replica of the prototype is created with gypsum using this inversion mold, the average amount of deviation generated at the joints of the duplicate is about 0.05 mm, and the average deviation when no pre-cured silicone rubber chips are mixed. Amount generated, about 0.10
It was about 1/2 of mm.
【００２２】（実施例３）本発明を用いて製造した反転
ゴム型より鋳型を作成し、その鋳型より製造した金型を
用いて原型の複製品を作成する場合の例である。実施例
１にて製作した反転ゴム型より、Ｂｅ‐Ｃｕ合金鋳造用
セラミック鋳型（エチルシリケート系バインダー硬化）
を作成し、これを用いてＢｅ‐Ｃｕ製鋳造金型を作成し
た。反転ゴム型の反りに起因する、金型の上型・下型接
合部の隙間を放電すりあわせにより型合わせ矯正した
後、この金型より石膏にて原型の複製品を作成した。(Embodiment 3) This is an example in which a mold is prepared from a reverse rubber mold manufactured by using the present invention, and a replica of the master is prepared using the mold manufactured from the mold. From the inverted rubber mold manufactured in Example 1, a ceramic mold for Be-Cu alloy casting (ethyl silicate-based binder curing)
Was prepared, and a Be-Cu casting mold was prepared using this. The gap between the upper and lower mold joints of the mold, which is caused by the warp of the inverted rubber mold, was rectified by discharge rubbing, and then a replica of the prototype was made from this mold with plaster.
【００２３】 本実施例により製造した金型では、０．
１５ｍｍの型合わせ矯正のみで十分で、複製品の接合部
におけるズレの発生はほとんど無く、平均で０．０４ｍ
ｍ以下であった。これに対し、補給部を設置せずに製作
した反転ゴム型を用いて製造した金型では、０．２５ｍ
ｍの型合わせ矯正が必要であり、石膏による複製品の接
合部における平均ズレ発生量は約０．１５ｍｍであり、
本実施例を用いた場合の約４倍であった。In the mold manufactured according to this example,
It is sufficient to correct the mold alignment of 15 mm, and there is almost no deviation at the joint of the duplicated product, 0.04 m on average.
It was m or less. On the other hand, in the case of the mold manufactured using the reverse rubber mold manufactured without installing the replenishment section, 0.25 m
It is necessary to correct the mold alignment of m, and the average amount of deviation generated at the joint part of the replica with gypsum is about 0.15 mm,
It was about four times as large as when using this example.
【００２４】[0024]
【発明の効果】 本発明によれば、シリコンゴムの収縮
に起因する変形の少ない寸法精度の優れた反転ゴム型、
及び金型を製造することができる。なお本発明は従来法
をそのまま利用し、さらに改良を加えたものであり、既
存の製法のほぼすべてに対して適用できるものである。
本発明を採用することにより反転型の寸法精度が向上す
るため、これを用いた複製品、鋳造用鋳型及び金型の精
度が向上し、後のズレ修正等の工数がほとんど不要にな
るとともに、良好な品質の複製品を提供することがで
き、産業の発展に寄与するところは極めて大きい。Advantageous Effects of Invention According to the present invention, a reversal rubber mold having excellent dimensional accuracy with less deformation due to the contraction of silicon rubber,
And molds can be manufactured. The present invention uses the conventional method as it is and further improves it, and can be applied to almost all existing manufacturing methods.
Since the dimensional accuracy of the reversal mold is improved by adopting the present invention, the accuracy of the duplicated product, the casting mold and the mold using the same is improved, and the man-hours for the misalignment correction and the like are almost unnecessary, and It is possible to provide duplicates of good quality, and it makes a great contribution to the development of the industry.
【図１】 本発明による裏打ち無しシリコンゴム反転型
の製造例を示す断面図である。FIG. 1 is a cross-sectional view showing a manufacturing example of a silicon rubber inversion type without a backing according to the present invention.
【図２】 本発明による裏打ち付きシリコンゴム反転型
の製造例を示す断面図である。FIG. 2 is a cross-sectional view showing a manufacturing example of a silicon rubber inversion type with a backing according to the present invention.
【図３】 原型よりシリコンゴム反転型を作成する従来
例を示すの断面図である。FIG. 3 is a cross-sectional view showing a conventional example in which a silicon rubber reversal mold is produced from a master mold.
【図４】 裏打ち材を付けたシリコンゴム反転型を作成
する従来例を示す断面図である。FIG. 4 is a cross-sectional view showing a conventional example for producing a silicon rubber reversal mold with a backing material.
【図５】 原型に対して反りが発生しているシリコンゴ
ム反転型の状態を表した断面図である。FIG. 5 is a cross-sectional view showing a state of a silicon rubber inversion type in which a warp is generated with respect to the original form.
【図６】 割型構造のシリコンゴム反転型において、型
合わせ時に上型、下型の接合部にズレが発生している状
態を表した断面図である。FIG. 6 is a cross-sectional view showing a state in which a displacement occurs in a joining portion of an upper die and a lower die during die matching in a silicon rubber inversion die having a split die structure.
【図７】 原型から金型を製造する各工程を表す断面図
である。FIG. 7 is a cross-sectional view showing each step of manufacturing a mold from a prototype.
【図８】 シリコンゴムの収縮特性を経時的に示すグラ
フである。FIG. 8 is a graph showing shrinkage characteristics of silicone rubber over time.
【図９】 本発明の製造方法の一例を示す断面図であ
る。FIG. 9 is a cross-sectional view showing an example of the manufacturing method of the present invention.
【図１０】 本発明の製造方法の他の例を示す断面図で
ある。FIG. 10 is a cross-sectional view showing another example of the manufacturing method of the present invention.
１・・・原型、２・・・下ブタ、３・・・枠、４・・・シリコンゴ
ム、５・・・裏打ち材、６・・・上ブタ、７・・・シリコンゴム
補給部枠、８・・・外気遮断膜、９・・・シリコンゴム補給
部、１０・・・反転ゴム型、１１・・・石膏等による鋳型、１
２・・・金型、１３・・・複製品、１４・・・反転型作成用の容
器、１５・・・孔部1 ... Prototype, 2 ... Lower pig, 3 ... Frame, 4 ... Silicon rubber, 5 ... Backing material, 6 ... Upper pig, 7 ... Silicon rubber replenishment section frame, 8 ... Outside air blocking film, 9 ... Silicon rubber replenishing section, 10 ... Inverted rubber mold, 11 ... Mold by gypsum, etc., 1
2 ... Mold, 13 ... Duplicate, 14 ... Container for making inverted mold, 15 ... Hole
Claims (5)
作成するに際して、反転型作成用の容器を用い、該容器
の原型側と反対側の位置に補給部を設けて、シリコンゴ
ム硬化時の液状収縮及びゲル状収縮による収縮分のシリ
コンゴムを補給することを特徴とする反転ゴム型製造方
法。1. A container for making an inverted mold is used when making an inverted mold from a prototype using silicon rubber .
A method for producing a reversal rubber mold, characterized in that a replenishment section is provided at a position opposite to the original mold side to replenish the silicon rubber for the contraction due to liquid contraction and gel contraction during curing of the silicone rubber.
作成するに際して、反転型作成用の容器を用い、該容器
の通気性を、原型側が高くなるように形成したことを特
徴とする反転ゴム型製造方法。2. A reversal rubber, characterized in that, when a reversal mold is prepared from a prototype using silicon rubber, a container for preparing the reversal mold is used, and the air permeability of the container is increased so that the master side is higher. Mold manufacturing method.
作成するに際して、硬化が終了し寸法が略安定化したシ
リコンゴムチップをシリコンゴム未硬化部内に混入する
ことを特徴とする反転ゴム型製造方法。3. A method for producing a reversal rubber mold, characterized in that, when a reversal mold is produced from a master using silicon rubber, a silicon rubber chip whose curing is completed and whose dimensions are substantially stabilized is mixed into an unhardened portion of the silicon rubber. .
気性を、原型側が高くなるように形成した請求項１記載
の反転ゴム型製造方法。4. The method for producing a reversal rubber mold according to claim 1, wherein a container for making a reversal mold is used, and the air permeability of the container is formed so as to be higher on the prototype side.
より反転ゴム型を製造した後、該反転ゴム型から鋳型を
作成し、次いで該鋳型より複製品製造用の金型を製造す
ることを特徴とする金型製造方法。5. After manufacturing a reversal rubber mold by the method according to any one of claims 1 to 4, a mold is made from the reversal rubber mold, and then a mold for manufacturing a duplicate product is manufactured from the mold. A method for producing a mold, which is characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5331349A JP2690452B2 (en) | 1993-12-27 | 1993-12-27 | Reverse rubber mold manufacturing method and mold manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5331349A JP2690452B2 (en) | 1993-12-27 | 1993-12-27 | Reverse rubber mold manufacturing method and mold manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07186161A JPH07186161A (en) | 1995-07-25 |
| JP2690452B2 true JP2690452B2 (en) | 1997-12-10 |
Family
ID=18242695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5331349A Expired - Fee Related JP2690452B2 (en) | 1993-12-27 | 1993-12-27 | Reverse rubber mold manufacturing method and mold manufacturing method |
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| Country | Link |
|---|---|
| JP (1) | JP2690452B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4986224B2 (en) * | 2007-03-12 | 2012-07-25 | 株式会社ブリヂストン | Rubber mold back cylinder, rubber mold manufacturing method using the same, and rubber mold |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0442089Y2 (en) * | 1987-01-20 | 1992-10-05 | ||
| JPS63279837A (en) * | 1987-05-11 | 1988-11-16 | Inoue Japax Res Inc | Apparatus for processing artificial tooth or bone |
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1993
- 1993-12-27 JP JP5331349A patent/JP2690452B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07186161A (en) | 1995-07-25 |
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