JP3023440B2 - Light-weight vacuum cast product containing reinforcing material and method of manufacturing the same - Google Patents
Light-weight vacuum cast product containing reinforcing material and method of manufacturing the sameInfo
- Publication number
- JP3023440B2 JP3023440B2 JP5280856A JP28085693A JP3023440B2 JP 3023440 B2 JP3023440 B2 JP 3023440B2 JP 5280856 A JP5280856 A JP 5280856A JP 28085693 A JP28085693 A JP 28085693A JP 3023440 B2 JP3023440 B2 JP 3023440B2
- Authority
- JP
- Japan
- Prior art keywords
- injection mold
- vacuum
- primary
- core material
- reinforcing material
- 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 - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】この発明は、無人ヘリコプターの
尾部回転翼であるテールブレードのように重量軽減及び
強度が必要とされる樹脂成形品の少ロット生産方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a small lot of a resin molded product which requires weight reduction and strength like a tail blade which is a tail rotor of an unmanned helicopter.
【０００２】[0002]
【従来の技術】従来の軽量真空注型品を製造工程順に説
明する。 （ａ） 図２Ａに示すように、１次マスターモデル１を
用い、真空注型法により、シリコンゴム製の１次注入型
２を作製する。この例では１次注入型２は、シリコンゴ
ムをメスで切開してマスターモデル１を取り出すとき
に、上型２ａと下型２ｂとに２分割される。上型２ａと
下型２ｂには、１次マスターモデル１の透孔１ａに対応
して突起２ｃがそれぞれ形成されている。2. Description of the Related Art A conventional lightweight vacuum cast product will be described in the order of manufacturing steps. (A) As shown in FIG. 2A, using a primary master model 1, a primary injection mold 2 made of silicon rubber is manufactured by a vacuum casting method. In this example, the primary injection mold 2 is divided into an upper mold 2a and a lower mold 2b when the master model 1 is taken out by cutting the silicone rubber with a scalpel. The upper mold 2a and the lower mold 2b are formed with projections 2c corresponding to the through holes 1a of the primary master model 1, respectively.
【０００３】（ｂ） １次注入型２（２ａ，２ｂ）を合
わせ、例えばテープで固定し（型締めと言う）、これを
用いて真空注型法により、図２Ｂに示すような熱硬化性
樹脂製の真空注型品（樹脂成形物）３を作製する。３ａ
は透孔である。 （ｃ） 図２Ｃに示すように真空注型品３の外周面（そ
の外周面上の分散された複数位置の小部分を除く）を0.
５〜２mm削り取って、２次マスターモデル４を作製す
る。削り取らずに残した部分は位置決め用突起４ｂとな
る。(B) The primary injection molds 2 (2a, 2b) are combined and fixed with, for example, a tape (called mold clamping), and a thermosetting resin as shown in FIG. A resin-made vacuum cast product (resin molded product) 3 is produced. 3a
Is a through hole. (C) As shown in FIG. 2C, the outer peripheral surface of the vacuum cast product 3 (excluding small portions at a plurality of positions dispersed on the outer peripheral surface) is set at 0.
The secondary master model 4 is manufactured by cutting off 5 to 2 mm. The portion left without being scraped becomes the positioning projection 4b.
【０００４】（ｄ） ２次マスターモデル４を用い、真
空注型法により図２Ｄに示すようなシリコンゴム製の２
次注入型５（５ａ，５ｂ）を作製する。 （ｅ） ２次注入型５（５ａ，５ｂ）を型締めし、２液
性発泡芯材を注入し、硬化させ、脱型して、図２Ｅに示
すような発泡芯材６を作製する。発泡芯材６は２次マス
ターモデル４とほゞ同じ形状であり、透孔６ａを有し、
位置決め用突起６ｂが一体に形成されている。なお、こ
の工程は発泡芯材を成型するので、真空注型法は用いら
れない。(D) Using a secondary master model 4, a silicone rubber 2 as shown in FIG.
Next injection mold 5 (5a, 5b) is manufactured. (E) The secondary injection mold 5 (5a, 5b) is clamped, a two-component foamed core material is injected, cured, and demolded to produce a foamed core material 6 as shown in FIG. 2E. The foam core material 6 has almost the same shape as the secondary master model 4, has a through hole 6a,
The positioning projection 6b is formed integrally. In this step, since the foamed core material is molded, the vacuum casting method is not used.
【０００５】（ｆ） 発泡芯材６を１次注入型２に嵌合
させる。即ち、発泡芯材６をその位置決め用突起６ｂを
用いて、１次注入型２（２ａ，２ｂ）内に位置決めして
配置した後（図２Ｆ），型締めする。 （ｇ） その１次注入型２（２ａ，２ｂ）を用い、真空
注型法により、熱硬化性樹脂を発泡芯材６と１次注入型
２の内周面との間隙に注入、硬化、脱型して、図２Ｇに
示すような軽量真空注型品７を作製する。軽量真空注型
品７は発泡芯材６を内蔵し、外周面の複数箇所に位置決
め用突起６ｂの突出面がそのまゝ現れている。(F) The foam core 6 is fitted into the primary injection mold 2. That is, the foam core 6 is positioned and arranged in the primary injection mold 2 (2a, 2b) using the positioning projections 6b (FIG. 2F), and then the mold is clamped. (G) Using the primary injection mold 2 (2a, 2b), a thermosetting resin is injected into the gap between the foam core 6 and the inner peripheral surface of the primary injection mold 2 by a vacuum casting method, and cured. The mold is removed to produce a lightweight vacuum cast product 7 as shown in FIG. 2G. Lightweight vacuum casting 7 incorporates a foam core member 6, the projecting surfaces of the positioning projections 6 b at a plurality of positions of the outer circumferential surface has its orゝappear.
【０００６】[0006]
【発明が解決しようとする課題】従来の軽量真空注型品
７では、その容積の大部分を発泡芯材６が占めるが、こ
の発泡芯材６は強度部材とはなり得ず、強度低下を起こ
していた。この発明の目的は、従来の軽量真空注型品の
強度低下という欠点を改善した軽量真空注型品とその製
造方法を提供することにある。In the conventional lightweight vacuum cast product 7, the foam core 6 occupies most of the volume, but this foam core 6 cannot be a strength member and the strength is reduced. Was awake. SUMMARY OF THE INVENTION An object of the present invention is to provide a light-weight vacuum cast product in which the disadvantage of the conventional light-weight vacuum cast product having reduced strength is improved, and a method of manufacturing the same.
【０００７】[0007]
【課題を解決するための手段】本発明では、２次注入型
５を用いて作製した、発泡芯材の内部または外周面また
は両方に補強材を設け、その発泡芯材を１次注入型２に
嵌合させ、型締めして、熱硬化性樹脂を用い真空注型法
にて発泡芯材を熱硬化性樹脂でくるみ込む。その結果、
補強材の入った軽量真空注型品を得ることができる。According to the present invention, a reinforcing material is provided on the inside or the outer peripheral surface or both of the foamed core material manufactured by using the secondary injection mold 5 and the foamed core material is attached to the primary injection mold 2. Then, the foam core is covered with the thermosetting resin by vacuum casting using a thermosetting resin. as a result,
It is possible to obtain a lightweight vacuum cast product containing a reinforcing material.
【０００８】[0008]
【実施例】この発明の実施例を図１に、図２と対応する
部分に同じ符号を付して示す。この発明の製造工程にお
いても、従来例で述べた（ａ）乃至（ｄ）と同じ製造工
程を用いる。しかし、重複するのでその説明は省略し、
次の工程から説明する。 （ｅ） ２次注入型５ａ，５ｂ（５ｂだけでもよい）に
複数の切込み５ｄを凹部５ｅの周縁に設け、下型５ｂの
切込み５ｄに金属板等の補強材８の突起８ｂを嵌合させ
て、凹部５ｅ上に補強材８を渡らせる。FIG. 1 shows an embodiment of the present invention, in which parts corresponding to those in FIG. In the manufacturing process of the present invention, the same manufacturing process as (a) to (d) described in the conventional example is used. However, the explanation is omitted because it overlaps,
The following steps will be described. (E) A plurality of cuts 5d are provided in the secondary injection molds 5a and 5b (only 5b may be provided) on the periphery of the concave portion 5e, and the projections 8b of the reinforcing material 8 such as a metal plate are fitted into the cuts 5d of the lower mold 5b. Then, the reinforcing member 8 is passed over the concave portion 5e.
【０００９】（ｆ） ２次注入型５（５ａ，５ｂ）を型
締めし、２液性発泡芯材を注入し、硬化させ、脱型し
て、図１Ｅに示すような補強材入りの発泡芯材６を作製
する。なお、発泡芯材６から補強材８の突起８ｂの先端
が突出しているので、この部分は２次注入型から取り出
した直後に切断する。発泡芯材６には従来と同様に位置
決め用突起６ｂが一体に形成されている。(F) The secondary injection mold 5 (5a, 5b) is clamped, a two-component foam core material is injected, cured, demolded, and foamed with a reinforcing material as shown in FIG. 1E. The core material 6 is manufactured. Since the tip of the projection 8b of the reinforcing material 8 protrudes from the foam core 6, this portion is cut immediately after being taken out of the secondary injection mold. A positioning projection 6b is integrally formed on the foamed core material 6 as in the related art.
【００１０】（ｇ） 発泡芯材６に、その透孔６ａ及び
位置決め用突起６ｂを避けて、ガラス繊維などの補強材
９を巻き付けて接着剤で固定し、その発泡芯材６を１次
注入型２に嵌合させる。即ち、発泡芯材６を位置決め用
突起６ｂを用いて、１次注入型２（２ａ，２ｂ）内に位
置決めして配置した後（図１Ｆ）、型締めする。 （ｈ） その１次注入型２を用い、真空注型法により、
熱硬化性樹脂を発泡芯材６と１次注入型２の内周面との
間隙に注入、硬化、脱型して、図１Ｇに示すような軽量
真空注型品７を作製する。軽量真空注型品７は、補強材
８，９で補強された発泡芯材６を内蔵し、外周面の複数
箇所に位置決め用突起６ａの突出面がそのまゝ現れてい
る。(G) A reinforcing material 9 such as a glass fiber is wound around the foamed core material 6 so as to avoid the through holes 6a and the positioning projections 6b and fixed with an adhesive, and the foamed core material 6 is first injected. It is fitted to the mold 2. That is, after positioning and disposing the foamed core material 6 in the primary injection mold 2 (2a, 2b) using the positioning projections 6b (FIG. 1F), the mold is clamped. (H) Using the primary injection mold 2 by a vacuum casting method,
A thermosetting resin is injected into the gap between the foamed core material 6 and the inner peripheral surface of the primary injection mold 2, cured, and released from the mold to produce a lightweight vacuum cast product 7 as shown in FIG. 1G. The lightweight vacuum cast product 7 has a built-in foam core material 6 reinforced with reinforcing materials 8 and 9, and the projection surfaces of the positioning projections 6 a appear as they are at a plurality of locations on the outer peripheral surface.
【００１１】これまでの説明では、発泡芯材６の内部及
び外周面にそれぞれ補強材８及び９を設けるものとした
が、この発明はこの場合に限らず、補強材８または９の
一方のみでもよい。In the above description, the reinforcing members 8 and 9 are provided on the inner and outer peripheral surfaces of the foam core member 6, respectively. However, the present invention is not limited to this case, and only one of the reinforcing members 8 and 9 is provided. Good.
【００１２】[0012]
【発明の効果】以上説明したように、本発明によって作
られた軽量真空注型品は補強材８または９をその内部に
くるみこむことができるため、軽量かつ強度の高い真空
注型品を作ることができる。As described above, the light-weight vacuum cast product made according to the present invention can wrap the reinforcing member 8 or 9 therein, thereby producing a lightweight and high-strength vacuum cast product. be able to.
【図１】この発明の実施例を製造工程順に説明するため
の原理図。FIG. 1 is a principle diagram for explaining an embodiment of the present invention in the order of manufacturing steps.
【図２】従来の軽量真空注型品の原理的な製造工程図。FIG. 2 is a diagram showing the basic manufacturing process of a conventional lightweight vacuum cast product.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ２９Ｋ 105:04 105:08 Ｂ２９Ｌ 31:08 (72)発明者 桑原 信夫 東京都渋谷区道玄坂１丁目21番６号 日 本航空電子工業株式会社内 (56)参考文献 特開 平６−328475（ＪＰ，Ａ) 特開 昭60−244510（ＪＰ，Ａ) 実開 平３−20122（ＪＰ，Ｕ) 実開 平３−70916（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 39/02 - 39/12 B29C 39/26 - 39/42 B29C 33/38,70/06 ────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. 7 Identification code FI B29K 105: 04 105: 08 B29L 31:08 (72) Inventor Nobuo Kuwahara 1-21-6 Dogenzaka, Shibuya-ku, Tokyo Japan Airlines (56) References JP-A-6-328475 (JP, A) JP-A-60-244510 (JP, A) JP-A-3-20122 (JP, U) JP-A-3-70916 ( (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) B29C 39/02-39/12 B29C 39/26-39/42 B29C 33 / 38,70 / 06
Claims (6)
によりシリコンゴム製の１次注入型を作製する工程と、 その１次注入型を用い、真空注型法により熱硬化性樹脂
製の真空注型品を作製する工程と、 その真空注型品の分散された複数位置の小部分を除く外
周面を薄く削り取り、２次マスターモデルを作製する工
程と、 その２次マスターモデルを用い、真空注型法によりシリ
コンゴム製の２次注入型を作製する工程と、 その２次注入型に発泡材料を注入し、硬化させ、脱型し
て発泡芯材を作製する工程と、 その発泡芯材の外周面に補強材を巻き付けた後に、その
発泡芯材を前記１次注入型に嵌合させ、型締めする工程
と、 その１次注入型に熱硬化性樹脂を注入し、硬化させ、脱
型して、前記外周面に補強材を巻き付けた発泡芯材を、
熱硬化性樹脂で包んだ状態の軽量真空注型品を作製する
工程と、より成ることを特徴とする、 補強材入り軽量真空注型品の製造方法。1. A step of manufacturing a primary injection mold made of silicon rubber by a vacuum casting method using a primary master model, and a step of forming a thermosetting resin by a vacuum injection method using the primary injection mold. The process of producing a vacuum cast product and excluding small portions at a plurality of dispersed positions of the vacuum cast product
A step of shaving the peripheral surface thinly to produce a secondary master model, a step of using the secondary master model to produce a secondary injection mold made of silicon rubber by a vacuum casting method, and foaming the secondary injection mold A step of injecting the material, curing and removing the mold to form a foamed core material, and winding a reinforcing material around the outer peripheral surface of the foamed core material, and then fitting the foamed core material to the primary injection mold. Injecting a thermosetting resin into the primary injection mold , curing, and removing
Molded, foamed core material with a reinforcing material wound around the outer peripheral surface,
A method for producing a lightweight vacuum cast article with a reinforcing material, comprising: a step of producing a lightweight vacuum cast article wrapped with a thermosetting resin.
によりシリコンゴム製の１次注入型を作製する工程と、 その１次注入型を用い、真空注型法により熱硬化性樹脂
製の真空注型品を作製する工程と、 その真空注型品の分散された複数位置の小部分を除く外
周面を薄く削り取り、２次マスターモデルを作製する工
程と、 その２次マスターモデルを用い、真空注型法によりシリ
コンゴム製の２次注入型を作製する工程と、 その２次注入型内の凹部に補強材を設置後、その２次注
入型内に発泡材料を注入し、硬化させ、脱型して前記補
強材を内部に有する発泡芯材を作製する工程と、前記補強材を内部に有する 発泡芯材を前記１次注入型に
嵌合させ、型締めする工程と、 その１次注入型に熱硬化性樹脂を注入し、硬化させ、脱
型して、前記内部に補強材を有する発泡芯材を、熱硬化
性樹脂で包んだ状態の軽量真空注型品を作製する工程
と、より成ることを特徴とする、 補強材入り軽量真空注型品の製造方法。2. A step of manufacturing a primary injection mold made of silicon rubber by a vacuum casting method using a primary master model, and a step of forming a thermosetting resin by a vacuum injection method using the primary injection mold. The process of producing a vacuum cast product and excluding small portions at a plurality of dispersed positions of the vacuum cast product
A step of shaving the peripheral surface thinly to form a secondary master model; a step of using the secondary master model to form a secondary injection mold made of silicon rubber by a vacuum casting method; After the reinforcing material is installed in the recess, a foaming material is injected into the secondary injection mold, cured, removed from the mold, and removed.
A step of producing a foamed core material having a strong material therein, a step of fitting the foamed core material having the reinforcing material therein to the primary injection mold, and clamping the mold, and thermosetting the primary injection mold. Inject, cure, and remove
Mold and heat cure the foamed core material with the reinforcing material inside.
A method for producing a lightweight vacuum cast product containing a reinforcing material, comprising: a step of producing a lightweight vacuum cast product wrapped with a conductive resin.
によりシリコンゴム製の１次注入型を作製する工程と、 その１次注入型を用い、真空注型法により熱硬化性樹脂
製の真空注型品を作製する工程と、 その真空注型品の分散された複数位置の小部分を除く外
周面を薄く削り取り、２次マスターモデルを作製する工
程と、 その２次マスターモデルを用い、真空注型法によりシリ
コンゴム製の２次注入型を作製する工程と、 その２次注入型内の凹部に補強材を設置後、その２次注
入型内に発泡材料を注入し、硬化させ、脱型して前記補
強材を内部に有する発泡芯材を作製する工程と、 その発泡芯材の外周面に補強材を巻き付けた後に、その
発泡芯材を前記１次注入型に嵌合させ、型締めする工程
と、 その１次注入型に熱硬化性樹脂を注入し、硬化させ、脱
型して、前記外周面に補強材を巻き付けると共に前記補
強材を内部に有する発泡芯材を、熱硬化性樹脂で包んだ
状態の軽量真空注型品を作製する工程と、より成ること
を特徴とする、 補強材入り軽量真空注型品の製造方法。3. A step of manufacturing a primary injection mold made of silicon rubber by a vacuum casting method using a primary master model, and a step of forming a thermosetting resin by a vacuum injection method using the primary injection mold. The process of producing a vacuum cast product and excluding small portions at a plurality of dispersed positions of the vacuum cast product
A step of shaving the peripheral surface thinly to form a secondary master model; a step of using the secondary master model to form a secondary injection mold made of silicon rubber by a vacuum casting method; After the reinforcing material is installed in the recess, a foaming material is injected into the secondary injection mold, cured, removed from the mold, and removed.
A step of producing a foamed core material having a strong material therein, and a step of winding a reinforcing material around the outer peripheral surface of the foamed core material, fitting the foamed core material to the primary injection mold, and clamping the mold. A thermosetting resin is injected into the primary injection mold , cured, and removed.
Mold, wrap a reinforcing material around the outer peripheral surface, and
A method for producing a lightweight vacuum cast product in which a foamed core material having a strong material inside is wrapped with a thermosetting resin, comprising the steps of: .
によりシリコンゴム製の１次注入型が作製され、 その１次注入型を用い、真空注型法により熱硬化性樹脂
製の真空注型品が作製され、 その真空注型品の分散された複数位置の小部分を除く外
周面を薄く削り取り、２次マスターモデルが作製され、 その２次マスターモデルを用い、真空注型法によりシリ
コンゴム製の２次注入型が作製され、 その２次注入型に発泡材料を注入し、硬化させ、脱型し
て発泡芯材が作製され、 その発泡芯材の外周面に補強材を巻き付けた後に、その
発泡芯材を前記１次注入型に嵌合させ、型締めされ、 その１次注入型に熱硬化製樹脂を注入し、硬化させ、脱
型して作製される、前記外周面に補強材を巻き付けた発
泡芯材を、熱硬化性樹脂で包んだ状態の補強材入り軽量
真空注型品。4. Using a primary master model, a primary injection mold made of silicone rubber is manufactured by a vacuum injection method, and a vacuum injection method made of a thermosetting resin is manufactured using the primary injection mold by a vacuum injection method. A molded product is manufactured , excluding small portions at the dispersed positions of the vacuum cast product.
A secondary master model is manufactured by shaving the peripheral surface thinly. A secondary injection mold made of silicon rubber is manufactured by a vacuum casting method using the secondary master model, and a foam material is injected into the secondary injection mold. After hardening and demolding, a foamed core material is produced. After a reinforcing material is wound around the outer peripheral surface of the foamed core material, the foamed core material is fitted into the primary injection mold, and the mold is clamped. Inject the thermosetting resin into the primary injection mold , cure, and remove
Molded with a reinforcing material wound around the outer peripheral surface
Lightweight vacuum cast product with a reinforcing material in which the foam core material is wrapped with a thermosetting resin.
によりシリコンゴム製の１次注入型が作製され、 その１次注入型を用い、真空注型法により熱硬化性樹脂
製の真空注型品が作製され、 その真空注型品の分散された複数位置の小部分を除く外
周面を薄く削り取り、２次マスターモデルが作製され、 その２次マスターモデルを用い、真空注型法によりシリ
コンゴム製の２次注入型が作製され、 その２次注入型内の凹部に補強材を設置後、その２次注
入型内に発泡材料を注入し、硬化させ、脱型して前記補
強材を内部に有する発泡芯材が作製され、前記補強材を内部に有する 発泡芯材を前記１次注入型に
嵌合させ、型締めされ、 その１次注入型に熱硬化性樹脂を注入し、硬化させ、脱
型して作製される、前記補強材を内部に有する発泡芯材
を、熱硬化性樹脂で包んだ状態の補強材入り軽量真空注
型品。5. Using a primary master model, a primary injection mold made of silicon rubber is manufactured by a vacuum injection method, and a vacuum injection method of a thermosetting resin is manufactured by a vacuum injection method using the primary injection mold. A molded product is manufactured , excluding small portions at the dispersed positions of the vacuum cast product.
A secondary master model is manufactured by shaving the peripheral surface thinly. Using the secondary master model, a secondary injection mold made of silicon rubber is manufactured by a vacuum casting method, and a reinforcing material is provided in a concave portion in the secondary injection mold. After the installation, the foaming material is injected into the secondary injection mold, cured, demolded, and
A foamed core material having a strong material therein is produced, and the foamed core material having the reinforcing material therein is fitted into the primary injection mold and clamped, and a thermosetting resin is injected into the primary injection mold. Then cure and remove
Foamed core material having the reinforcing material inside produced by molding
Is a lightweight vacuum cast product with a reinforcing material wrapped in a thermosetting resin.
によりシリコンゴム製の１次注入型が作製され、 その１次注入型を用い、真空注型法により熱硬化性樹脂
製の真空注型品が作製され、 その真空注型品の分散された複数位置の小部分を除く外
周面を薄く削り取り、２次マスターモデルが作製され、 その２次マスターモデルを用い、真空注型法によりシリ
コンゴム製の２次注入型が作製され、 その２次注入型内の凹部に補強材を設置後、その２次注
入型内に発泡材料を注入し、硬化させ、脱型して前記補
強材を内部に有する発泡芯材が作製され、 その発泡芯材の外周面に補強材を巻き付けた後に、その
発泡芯材を前記１次注入型に嵌合させ、型締めされ、 その１次注入型に熱硬化性樹脂を注入し、硬化させ、脱
型して作製される、前記外周面に補強材を巻き付けると
共に前記補強材を内部に有する発泡芯材を、熱硬化性樹
脂で包んだ状態の補強材入り軽量真空注型品。6. Using a primary master model, a primary injection mold made of silicon rubber is manufactured by a vacuum injection method, and a vacuum injection method made of a thermosetting resin is manufactured by a vacuum injection method using the primary injection mold. A molded product is manufactured , excluding small portions at the dispersed positions of the vacuum cast product.
A secondary master model is manufactured by shaving the peripheral surface thinly. Using the secondary master model, a secondary injection mold made of silicon rubber is manufactured by a vacuum casting method, and a reinforcing material is provided in a concave portion in the secondary injection mold. After the installation, the foaming material is injected into the secondary injection mold, cured, demolded, and
A foamed core material having a strong material therein is produced, and after a reinforcing material is wound around the outer peripheral surface of the foamed core material, the foamed core material is fitted into the primary injection mold, and the mold is clamped. Inject the thermosetting resin into the injection mold , cure and remove
When a reinforcing material is wound around the outer peripheral surface, which is manufactured by molding
A light-weight vacuum cast product containing a reinforcing material in a state where a foamed core material having the reinforcing material therein is wrapped with a thermosetting resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5280856A JP3023440B2 (en) | 1993-11-10 | 1993-11-10 | Light-weight vacuum cast product containing reinforcing material and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5280856A JP3023440B2 (en) | 1993-11-10 | 1993-11-10 | Light-weight vacuum cast product containing reinforcing material and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07132520A JPH07132520A (en) | 1995-05-23 |
| JP3023440B2 true JP3023440B2 (en) | 2000-03-21 |
Family
ID=17630934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5280856A Expired - Lifetime JP3023440B2 (en) | 1993-11-10 | 1993-11-10 | Light-weight vacuum cast product containing reinforcing material and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3023440B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4646705B2 (en) * | 2005-06-03 | 2011-03-09 | アルプス電気株式会社 | Mold manufacturing method and molded product manufacturing method |
-
1993
- 1993-11-10 JP JP5280856A patent/JP3023440B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07132520A (en) | 1995-05-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19991116 |