JPH1148266A - Mold for wax molding with heat exchanging function - Google Patents
Mold for wax molding with heat exchanging functionInfo
- Publication number
- JPH1148266A JPH1148266A JP20599897A JP20599897A JPH1148266A JP H1148266 A JPH1148266 A JP H1148266A JP 20599897 A JP20599897 A JP 20599897A JP 20599897 A JP20599897 A JP 20599897A JP H1148266 A JPH1148266 A JP H1148266A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- cavity
- wax
- molds
- rubber
- 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
- 238000000465 moulding Methods 0.000 title claims abstract description 9
- 229920001971 elastomer Polymers 0.000 claims abstract description 35
- 239000005060 rubber Substances 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 27
- 238000009826 distribution Methods 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 230000001788 irregular Effects 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、ロストワックス鋳
造法において、良好なる熱交換機能を発揮し得る熱交換
機能を有するワックス成形用型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wax mold having a heat exchange function capable of exhibiting a good heat exchange function in a lost wax casting method.
【０００２】[0002]
【従来の技術】従来では、生産個数が少なく、寸法精度
が厳しくない部品の要求に対して、金型の替わりに簡易
的にゴム型を用いてワックスの成形を行なっている。そ
の場合、ゴムは軟質のため、ワックスの注入圧力は、ゴ
ムが変形しない常圧付近で行なわねばならず、ワックス
を重力で注入できる液体状にまで溶融することが必要で
ある。2. Description of the Related Art Conventionally, wax is simply formed by using a rubber mold instead of a mold in response to a demand for a part whose production number is small and dimensional accuracy is not strict. In this case, since the rubber is soft, the injection pressure of the wax must be set at around normal pressure at which the rubber is not deformed, and it is necessary to melt the wax into a liquid state that can be injected by gravity.
【０００３】[0003]
【発明が解決しようとする課題】ところで、高温加熱し
たワックスａが、割り型としての一対のゴム型ｂに設け
た注入口ｃから本体キャビティｄ（製品部）に流れこん
だとき〔図３（Ｂ）参照〕、ワックスａと接触したキャ
ビティ内表面ｄ1 に急激な膨張が生じることである〔図
３（Ｃ）参照〕。By the way, when the wax a heated at a high temperature flows into the main body cavity d (product part) from the injection port c provided in the pair of rubber molds b as a split mold [FIG. B)], the is that a rapid expansion occurs in the cavity in the surface d 1 in contact with the wax a [FIG 3 (C) refer to Fig.
【０００４】即ち、ゴム型ｂの熱伝導性が金属に比べ
て、極端に悪いため、キャビティ内表面ｄ1 と型内部ｂ
1 との極端な温度差ができ、不均一な膨張を伴ったゴム
型ｂの変形となる。結果として、変形やバリｅの多い、
形状が一定しない成形品ｆとなる。更に成形品ｆは、大
きな空洞（巣）ｇや面びけｈが生じ、後工程で相当な工
数をかけて修正しないと製品として使えない重大な欠点
があった。That is, since the thermal conductivity of the rubber mold b is extremely poor as compared with metal, the cavity inner surface d 1 and the mold inner b
An extreme temperature difference from 1 occurs, and the rubber mold b is deformed with uneven expansion. As a result, there are many deformations and burrs,
The molded product f has an irregular shape. Further, the molded product f has a large defect (cavity) g and a face h, and has a serious disadvantage that it cannot be used as a product unless it is corrected by taking considerable man-hours in a later process.
【０００５】[0005]
【課題を解決するための手段】そこで発明者は、前記課
題を解決することを目的とし、鋭意，研究を重ねた結
果、その発明を、型内キャビティ全表面から割り型とし
ての一対のゴム型の外表面に向って、小径の連続した金
属線をゴム型外に露出するように設け、該金属線を多数
設けてなる熱交換機能を有するワックス成形用型とした
り、或いは、前述の構成において、前記型内キャビティ
の上に注入口を設け、前記多数の金属線の分布を型内キ
ャビティの下側になる程、疎から密に変化するようにし
てなる熱交換機能を有するワックス成形用型としたこと
により、ゴム型が変形せず、且つ良好なる熱交換機能を
有し、迅速且つ整然としたゴム型を提供でき、前記の課
題を解決したものである。Means for Solving the Problems Therefore, the inventor of the present invention has conducted intensive studies with the aim of solving the above-mentioned problems. Toward the outer surface, a continuous metal wire having a small diameter is provided so as to be exposed outside the rubber mold, and a wax molding mold having a heat exchange function provided with a large number of such metal wires is provided. A wax injection mold having a heat exchange function, wherein an injection port is provided on the cavity in the mold, and the distribution of the plurality of metal wires is changed from sparse to dense as the distribution of the metal wires is located below the cavity in the mold. As a result, the rubber mold is not deformed, has a good heat exchange function, can provide a quick and orderly rubber mold, and has solved the above-mentioned problem.
【０００６】[0006]
【発明の実施の形態】以下、図面に基づいて実施の形態
を説明すると、本発明のゴム型１は、立方体状をなし、
シリコン，合成ゴム製で割り型として一対で構成されて
いるものであり、その内部には、種々の形状のキャビテ
ィ（製品）が製造される型内キャビティ２が割り型状に
形成されている。該型内キャビティ２に連続したゴム型
１の外表面に露出する注入口３が設けられている。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a rubber mold according to the present invention;
A pair of split molds made of silicon or synthetic rubber are provided, and inside the mold, cavity 2 in which cavities (products) of various shapes are manufactured is formed in a split mold shape. An injection port 3 is provided on the outer surface of the rubber mold 1 which is continuous with the cavity 2 in the mold.
【０００７】前記型内キャビティ２の内表面２ａの下側
側から上側までの全表面に、該内表面２ａから前記ゴム
型１の外表面に向かって金属線４が所定の分布で多数本
設けられている。この分布の実施の形態としては、図２
（Ａ），（Ｂ）に示すように、前記ゴム型１の底辺に略
平行を保ち、等分布に多数本の金属線４が設けられてい
る。A large number of metal wires 4 are provided in a predetermined distribution from the inner surface 2a to the outer surface of the rubber mold 1 on the entire surface from the lower side to the upper side of the inner surface 2a of the cavity 2 in the mold. Have been. As an embodiment of this distribution, FIG.
As shown in (A) and (B), a large number of metal wires 4 are provided to be substantially parallel to the bottom of the rubber mold 1 and to be evenly distributed.
【０００８】また、分布の他の実施の形態としては、図
１（Ａ），（Ｂ）に示すように、前記ゴム型１の底辺に
略平行で、型内キャビティの下側になる程、多数本の金
属線４，４，…の分布が、粗から密に変化するように構
成されることもある。As another embodiment of the distribution, as shown in FIGS. 1 (A) and 1 (B), as the distribution is substantially parallel to the bottom of the rubber mold 1 and the lower side of the cavity in the mold, The distribution of a large number of metal wires 4, 4,... May be changed from coarse to dense.
【０００９】金属線４を埋め込み形成するには、型内キ
ャビティ２内に実際の製品を挿入した状態において、ゴ
ム型１を成形する際に、該ゴム型１が溶融状態におい
て、多数本の金属線４，４，…を適宜の分布状態で、該
金属線４の一端を、製品に当接するようにし、且つ他端
はゴム型１の外部に露出するようにしておき、この状態
で、ゴム型１を硬化させることで、図１乃至図４の実施
の形態を成形することができる。In order to embed and form the metal wire 4, when molding the rubber mold 1 in a state where the actual product is inserted into the mold cavity 2, when the rubber mold 1 is in a molten state, a large number of metal With the wires 4, 4,... In an appropriate distribution state, one end of the metal wire 4 is brought into contact with the product, and the other end is exposed to the outside of the rubber mold 1. By curing the mold 1, the embodiment of FIGS. 1 to 4 can be formed.
【００１０】前記金属線４は、全体が同一径をなしたも
のが使用されるのが一般であるが、その金属線４の径を
変えるようにすることもある。図中５は、溶融ワックス
であって、前記注入口３から注入され、型内キャビティ
２内に充填される。The metal wires 4 generally have the same diameter as a whole, but the diameter of the metal wires 4 may be changed. In the figure, reference numeral 5 denotes a molten wax, which is injected from the injection port 3 and filled in the cavity 2 in the mold.
【００１１】次に、これを使用した作用について説明す
ると、溶融ワックス５を注入した後、ゴム型１の外部よ
り適宜な風を送る。すると、前記型内キャビティ２の内
表面２ａに接触した溶融ワックス５の熱は、金属線４を
通じて速やかに型外へ伝達され送風により速やかに冷却
される。Next, the operation using this will be described. After the molten wax 5 is injected, an appropriate air is sent from the outside of the rubber mold 1. Then, the heat of the molten wax 5 in contact with the inner surface 2a of the in-mold cavity 2 is quickly transmitted to the outside of the mold through the metal wire 4 and is quickly cooled by blowing air.
【００１２】金属線４の分布が密に設定されている程、
冷却効果が高く、即ち、分布が密な部分からワックスが
凝固していく。図１（Ａ），（Ｂ）では、溶融ワックス
５は注入口３より最も遠い位置の下側で，金属線４の分
布が密のため、この部分より凝固が始まり、注入口３の
金属線４の分布が疎の部分で凝固が終了するようにな
る。As the distribution of the metal wires 4 is set densely,
The cooling effect is high, that is, the wax solidifies from a densely distributed portion. 1A and 1B, the molten wax 5 is below the position farthest from the injection port 3 and the distribution of the metal wires 4 is dense. The coagulation ends at a portion where the distribution of No. 4 is sparse.
【００１３】[0013]
【実施例】本発明の実施品では、シリコン製のゴム型１
に挿入される，金属線４は、φ０．５mmの線が使用さ
れ、金属線４の分布は、注入口３に近づくにつれ密から
疎へ傾斜的に変化させた構成になっている。即ち、型内
キャビティ２内の下側が密で、上側の注入口３に近づく
につれて疎に順次なるように構成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of the present invention, a rubber mold 1 made of silicon is used.
A metal wire 4 having a diameter of 0.5 mm is used, and the distribution of the metal wire 4 is changed from dense to sparse as it approaches the inlet 3. That is, the lower side in the in-mold cavity 2 is configured to be dense, and to be sparse in order as approaching the upper injection port 3.
【００１４】図４は、本発明型と従来型を比較した結果
であり、従来型が、ワックスが脱型できる強度を持つま
で４０分前後待たねばならないのに対して（これだけ時
間をかけても、成形品は欠陥を有している）、本発明型
の場合は、熱交換性能が高いため、成形サイクルが５分
と速く、安定したワックス成形品が得られることがわか
る。FIG. 4 shows the result of comparison between the present invention type and the conventional type. In contrast, the conventional type has to wait for about 40 minutes until the wax has a strength capable of releasing the wax. In the case of the mold of the present invention, since the heat exchange performance is high, the molding cycle is as fast as 5 minutes, and a stable wax molded product can be obtained.
【００１５】[0015]
【発明の効果】請求項１の発明では、型内キャビティ２
全表面から割り型としての一対のゴム型１の外表面に向
って、小径の連続した金属線４をゴム型外に露出するよ
うに設け、該金属線４を多数設けてなる熱交換機能を有
するワックス成形用型としたことにより、バリ、変形、
巣等の欠陥の殆どなく、寸法精度の安定したワックス成
形品がが得られる最大の利点がある。According to the first aspect of the present invention, the cavity 2 in the mold is provided.
A heat exchange function is provided in which a small diameter continuous metal wire 4 is provided so as to be exposed outside the rubber mold from the entire surface toward the outer surfaces of the pair of rubber molds 1 as a split mold, and a large number of the metal wires 4 are provided. Burr, deformation,
There is the greatest advantage that a wax molded product with almost no defects such as nests and stable dimensional accuracy can be obtained.
【００１６】即ち、巣の発生や、面びけをなくすことが
できる。このようにできるのは、本発明において、溶融
ワックス５の熱をゴム型１に蓄熱される前に奪って行く
ので不均一なゴム型１の変形が生じにくく、安定したワ
ックス成形品が得られる。また、高価な金型を製作する
場合に比べて、低コスト、短納期となり、経済効率が上
がる。That is, it is possible to eliminate the occurrence of nests and beveling. This is because, in the present invention, the heat of the molten wax 5 is taken away before being stored in the rubber mold 1, so that the rubber mold 1 is less likely to be deformed unevenly and a stable wax molded product is obtained. . In addition, compared to the case of manufacturing an expensive mold, the cost is reduced, the delivery time is short, and the economic efficiency is increased.
【００１７】また、請求項２の発明では、請求項１にお
いて、前記型内キャビティ２の上に注入口３を設け、前
記多数の金属線４，４，…の分布を型内キャビティ２の
下側になる程、疎から密に変化するようにしてなる熱交
換機能を有するワックス成形用型としたことにより、下
側がより、冷却さることとなり、下側から上側にゆくに
したがって順次冷却され、凝固並びに溶融ワックス５の
供給が順次行なわれ、製品内での空洞（巣）の発生や、
面びけは防止できるし、また、均一ではなく、冷却に対
して時間差を有した制御ができる利点がある。According to the second aspect of the present invention, in the first aspect, an injection port 3 is provided above the in-mold cavity 2, and the distribution of the plurality of metal wires 4, 4,. As it becomes closer to the side, by making it a wax molding mold having a heat exchange function that changes from sparse to dense, the lower side will be more cooled, and will be cooled sequentially from the lower side to the upper side, The coagulation and the supply of the molten wax 5 are sequentially performed to generate a cavity (nest) in the product,
There is an advantage that beveling can be prevented, and control can be performed with a time difference for cooling, which is not uniform.
【００１８】なお、本発明型のゴム型１の材質は、シリ
コン系のゴムであるが、これに限定されることなく、樹
脂系材からセラミックス材まで、金属に比べて熱伝導性
の劣る材料に対して有効なことは言うまでもない。The material of the rubber mold 1 of the present invention is a silicon-based rubber, but is not limited thereto. From a resin material to a ceramic material, a material having a lower thermal conductivity than metal is used. Needless to say, this is effective.
【図１】（Ａ）は本発明の断面図 （Ｂ）は（Ａ）の要部斜視図1A is a sectional view of the present invention, and FIG. 1B is a perspective view of a main part of FIG.
【図２】（Ａ）は本発明の別の実施の形態の断面図 （Ｂ）は（Ａ）の要部斜視図2A is a cross-sectional view of another embodiment of the present invention, and FIG. 2B is a perspective view of a main part of FIG.
【図３】（Ａ）は従来公知のゴム型の断面図 （Ｂ）は従来公知のゴム型内に溶融ワックスを注入した
直後の断面図 （Ｃ）は従来公知のゴム型内に溶融ワックスを注入し、
ゴム型が変形等している状態の断面図FIG. 3A is a cross-sectional view of a conventionally known rubber mold. FIG. 3B is a cross-sectional view immediately after a molten wax is injected into a conventionally known rubber mold. FIG. Inject,
Sectional view with rubber mold deformed
【図４】本発明のゴム型と、従来公知のゴム型との比較
表FIG. 4 is a comparison table between the rubber mold of the present invention and a conventionally known rubber mold.
１…ゴム型 ２…型内キャビティ ２ａ…内表面 ３…注入口 ４…金属線 DESCRIPTION OF SYMBOLS 1 ... Rubber mold 2 ... Mold cavity 2a ... Inner surface 3 ... Injection port 4 ... Metal wire
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ // Ｂ２９Ｋ 91:00 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI // B29K 91:00
Claims (2)
の一対のゴム型の外表面に向って、小径の連続した金属
線をゴム型外に露出するように設け、該金属線を多数設
けてなることを特徴とする熱交換機能を有するワックス
成形用型。1. A small-diameter continuous metal wire is provided so as to be exposed outside the rubber mold from the entire surface of the cavity in the mold toward the outer surfaces of a pair of rubber molds as a split mold. A wax molding mold having a heat exchange function.
の上に注入口を設け、前記多数の金属線の分布を型内キ
ャビティの下側になる程、疎から密に変化するようにし
てなることを特徴とする熱交換機能を有するワックス成
形用型。2. The mold according to claim 1, wherein an injection port is provided above the cavity in the mold, and the distribution of the plurality of metal wires is changed from sparse to dense as the distribution is below the cavity in the mold. A wax molding die having a heat exchange function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20599897A JPH1148266A (en) | 1997-07-31 | 1997-07-31 | Mold for wax molding with heat exchanging function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20599897A JPH1148266A (en) | 1997-07-31 | 1997-07-31 | Mold for wax molding with heat exchanging function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1148266A true JPH1148266A (en) | 1999-02-23 |
Family
ID=16516224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20599897A Pending JPH1148266A (en) | 1997-07-31 | 1997-07-31 | Mold for wax molding with heat exchanging function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1148266A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119500976A (en) * | 2024-11-21 | 2025-02-25 | 中国航发沈阳黎明航空发动机有限责任公司 | A type of extended thin-wall casting adjustment plate bottom plate pressing die |
-
1997
- 1997-07-31 JP JP20599897A patent/JPH1148266A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119500976A (en) * | 2024-11-21 | 2025-02-25 | 中国航发沈阳黎明航空发动机有限责任公司 | A type of extended thin-wall casting adjustment plate bottom plate pressing die |
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