JPH01216067A - Manufacture of resin intake manifold - Google Patents
Manufacture of resin intake manifoldInfo
- Publication number
- JPH01216067A JPH01216067A JP63040449A JP4044988A JPH01216067A JP H01216067 A JPH01216067 A JP H01216067A JP 63040449 A JP63040449 A JP 63040449A JP 4044988 A JP4044988 A JP 4044988A JP H01216067 A JPH01216067 A JP H01216067A
- Authority
- JP
- Japan
- Prior art keywords
- intake manifold
- resin
- flange parts
- moulding
- thermosetting resin
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
- B29C2049/2017—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements outside the article
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/08—Thermoplastics
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
本発明は樹脂製インテークマニホールドの製法に関する
。さらに詳しくは、熱硬化性樹脂にて成形されたフラン
ジ部を用いてブロー成形法で成形する方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a resin intake manifold.More specifically, a method for molding by blow molding using a flange portion molded from a thermosetting resin. Regarding.
自動車エンジンのインテークマニホールドは、キャーブ
レタとシリンダヘッドとを接続し、混合気をシリンダヘ
ッドへ供給するための通路であり、アルミダイカスト製
のものが一般的であったが、近年エンジンの軽量化など
の点からインテークマニホールドを樹脂製にすることが
行なわれている。The intake manifold of an automobile engine is a passageway that connects the carburetor and the cylinder head and supplies the air-fuel mixture to the cylinder head.It was generally made of aluminum die-casting, but in recent years it has been made of die-cast aluminum. Therefore, the intake manifold is made of resin.
樹脂製インテークマニホールドを成形する方法としては
、インテークマニホールドの中空部に対応するようなス
ズ−ビスマス合金などの低融点合金で作製された中子を
用いて射出成形法などにより成形したのち、中子を溶融
流出せしめる中子溶融法、中空の予備成形品を加熱し金
型内で内圧をかけるブロー成形法、あるいは射出成形法
などにより個別に成形された分割成形体を溶着などによ
り一体化する分割成形法などがあげられる。The method for molding a resin intake manifold is to mold it by injection molding using a core made of a low melting point alloy such as a tin-bismuth alloy that fits the hollow part of the intake manifold, and then core melting method, in which a hollow preform is heated and internal pressure is applied in a mold; Examples include molding methods.
しかしながら、前記中子溶融法においては、用いる低融
点合金の成分が安全衛生上の問題を生ずるおそれがあり
、また低融点合金は高価であり製造コストが高くなるな
どの問題があり、前記ブロー成形法においては、たとえ
ば、成形圧力が低いというブロー成形法特有の理由から
、フランジ部の寸法精度が不充分であるという問題があ
り、前記分割成形法においては、各分割成形体には必ず
そりが発生しているという理由から、寸法精度が不充分
である、接合時に充分な接合強度かえられないなどの問
題がある。However, in the core melting method, the components of the low melting point alloy used may cause health and safety problems, and the low melting point alloy is expensive, resulting in high manufacturing costs. For example, in the split molding method, there is a problem that the dimensional accuracy of the flange part is insufficient due to the low molding pressure, which is unique to the blow molding method. Because of this occurrence, there are problems such as insufficient dimensional accuracy and insufficient bonding strength during bonding.
本発明は前記問題点に鑑みてなされたものであり、安全
で、経済的で、充分な寸法精度かえられる樹脂製インテ
ークマニホールドの製法を提供することを目的とする。The present invention has been made in view of the above problems, and an object of the present invention is to provide a method for manufacturing a resin intake manifold that is safe, economical, and allows sufficient dimensional accuracy.
本発明は分岐管部とフランジ部とからなるインテークマ
ニホールドを樹脂で成形するに際して、前記フランジ部
を予め熱硬化性樹脂を用いて成形し、これを成形型内に
配置し、熱可塑性樹脂を用いて前記分岐管部をブロー成
形法で成形することにより、一体化されたインテークマ
ニホールドをうることを特徴とする樹脂製インテークマ
ニホールドの製法に関する。When molding an intake manifold consisting of a branch pipe part and a flange part with resin, the flange part is molded in advance using a thermosetting resin, this is placed in a mold, and the intake manifold is molded with a thermoplastic resin. The present invention relates to a method for manufacturing a resin intake manifold, characterized in that an integrated intake manifold is obtained by molding the branch pipe portion using a blow molding method.
本発明においては、あらかじめ成形された熱硬化性樹脂
のフランジ部を用いるので、充分なフランジ部の寸法精
度を有する樹脂製インテークマニホールドが容易にえら
れる。In the present invention, since a thermosetting resin flange portion formed in advance is used, a resin intake manifold having sufficient dimensional accuracy of the flange portion can be easily obtained.
つぎに図面を参照して本発明の方法をさらに詳細に説明
する。Next, the method of the present invention will be explained in more detail with reference to the drawings.
第１図は本発明の方法によって製造される樹脂製インテ
ークマニホールドの一例を示す斜視図、第２図は第１図
のインテークマニホールドに用いられる一方のフランジ
部の平面図、第３図は第１図のインテークマニホールド
に用いられる他方のフランジ部の平面図である。FIG. 1 is a perspective view showing an example of a resin intake manifold manufactured by the method of the present invention, FIG. 2 is a plan view of one flange part used in the intake manifold of FIG. 1, and FIG. FIG. 7 is a plan view of the other flange used in the intake manifold shown in the figure.
第１図に示されるインテークマニホールド（１）は、フ
ランジ部（２）および（３）と、それらを接続する分岐
管部（４）とからなり、板状の前記フランジ部（２およ
び（３）はエンジンブロックヘッドとのシール面および
キャブレタとのシール面にそれぞれ用いられる。また、
前記フランジ部には分岐管部（４）が嵌合しうる開口部
（Ｓが必要個数設けられている。孔（６）はボルト挿通
孔である。The intake manifold (1) shown in FIG. 1 consists of flange parts (2) and (3) and a branch pipe part (4) that connects them. is used for the sealing surface with the engine block head and the sealing surface with the carburetor.Also,
The flange portion is provided with a required number of openings (S) into which the branch pipe portion (4) can fit. The hole (6) is a bolt insertion hole.
前記フランジ部（２）および（３）は、たとえばフェノ
ール樹脂、不飽和ポリエステル樹脂、エポキシ樹脂、あ
るいはこれらにガラス繊維、炭素繊維などの′補強材を
配合した強化樹脂などの熱硬化製樹脂を用いて成形され
る。なお、各種の繊維補強材が用いられるが、射出成形
でフランジを形成したばあい、繊維の配向異方性から必
ずそりが発生し、気密性の確保が困難となる。The flange portions (2) and (3) are made of thermosetting resin such as phenol resin, unsaturated polyester resin, epoxy resin, or a reinforced resin made by blending these with a reinforcing material such as glass fiber or carbon fiber. molded. Although various fiber reinforcing materials are used, when a flange is formed by injection molding, warpage inevitably occurs due to the orientation anisotropy of the fibers, making it difficult to ensure airtightness.
前記分岐管部（４）は、たとえば８−ナイロン、６Ｂ−
ナイロン、芳香族ポリアミドおよびこれらの共重合体な
どのポリアミド樹脂、ポリブチレンテレフタレート、ポ
リエチレンテレフタレートなどのポリエステル樹脂、さ
らに各種樹脂のポリマーアロイなど、あるいはこれらに
ガラス繊維、炭化繊維などの補強材を配合した強化樹脂
などの熱可塑性樹脂を用いて成形される。The branch pipe portion (4) is made of, for example, 8-nylon, 6B-
Polyamide resins such as nylon, aromatic polyamides and their copolymers, polyester resins such as polybutylene terephthalate and polyethylene terephthalate, and polymer alloys of various resins, or those blended with reinforcing materials such as glass fiber and carbonized fiber. Molded using thermoplastic resin such as reinforced resin.
前記フランジ部（２）および（３）の成形方法にはとく
に限定はなく、たとえば通常の射出成形法、圧縮成形法
、トランスファー成形法、ＳＭＣ成形法などによって成
形することができる。There are no particular limitations on the method of molding the flange portions (2) and (3), and they may be molded, for example, by ordinary injection molding, compression molding, transfer molding, SMC molding, or the like.
前記フランジ部（２）および（３）を成形型内の所定位
置にセットしたのちに行なわれる分岐管（４）のブロー
成形の方法としてとくに限定はなく、たとえばガラス繊
維４０％を含む６Ｂ−ナイロンの樹脂について説明する
と、分岐管サイズが３００×１８０Ｘ ８０■鵬のばあ
い、樹脂温度を２７５〜３００℃に設定し、パリソン肉
厚５關、パリソン径２００鰭として押出速度５ ｃｓ
／ ６で押出し、プリピンチ後、型締圧３トンで型締し
、ブローしたのち、型温度ＢＯ℃にて４分冷却後、成形
品をうるなどすることによって成形しうる。このばあい
、フランジ部（２）および（３）と分岐管部（４）との
充分な接合はフランジにつめを設定し、ブロー成形材料
との接合強度を確保することなどによって達成される。There is no particular limitation on the method for blow molding the branch pipe (4), which is carried out after the flanges (2) and (3) are set at predetermined positions in the mold. For example, 6B-nylon containing 40% glass fiber is used. To explain the resin, if the branch pipe size is 300 x 180
/ 6, pre-pinch, clamp the mold with a mold clamping pressure of 3 tons, blow, cool for 4 minutes at a mold temperature of BO°C, and then mold the molded product by moistening it. In this case, sufficient bonding between the flange portions (2) and (3) and the branch pipe portion (4) is achieved by providing pawls on the flanges to ensure bonding strength with the blow molding material.
このようにして寸法精度が良好で、フランジ部表面や分
岐管部内壁に除去の必要なパリなどの発生のない樹脂製
インテークマニホールドかえられる。なお、低融点合金
製の中子を用いないので、前述の安全衛生上の問題を生
ずるおそれもなく、製造コストの上昇も防がれる。In this way, a resin intake manifold can be replaced that has good dimensional accuracy and does not have any burrs that need to be removed on the surface of the flange or on the inner wall of the branch pipe. In addition, since a core made of a low melting point alloy is not used, there is no risk of the aforementioned safety and health problems, and an increase in manufacturing costs is also prevented.
本発明の方法は、寸法精度の良好な樹脂製インテークマ
ニホールドが、安全に、経済的にえられるという効果を
奏する。The method of the present invention has the effect that a resin intake manifold with good dimensional accuracy can be obtained safely and economically.
第１図は本発明の方法によって製造される樹脂製インテ
ークマニホールドの一例を示す斜視図、第２図は第１図
のインテークマニホールドに用いられる一方のフランジ
部を示す平面図、第３図は第１図のインテークマニホー
ルドに用いられる他方のフランジ部を示す平面図である
。
（図面の主要符号）
（１）：インテークマニホールド
（２）、（３）：フランジ部
（４）：分岐管FIG. 1 is a perspective view showing an example of a resin intake manifold manufactured by the method of the present invention, FIG. 2 is a plan view showing one flange part used in the intake manifold of FIG. 1, and FIG. FIG. 2 is a plan view showing the other flange portion used in the intake manifold shown in FIG. 1; (Main symbols in the drawing) (1): Intake manifold (2), (3): Flange part (4): Branch pipe
Claims (1)
ールドを樹脂で成形するに際して、前記フランジ部を予
め熱硬化性樹脂を用いて成形し、これを成形型内に配置
し、熱可塑性樹脂を用いて前記分岐管部をブロー成形法
で成形することにより、一体化されたインテークマニホ
ールドをうることを特徴とする樹脂製インテークマニホ
ールドの製法。1. When molding an intake manifold consisting of a branch pipe part and a flange part with resin, the flange part is molded in advance using a thermosetting resin, this is placed in a mold, and the intake manifold is molded with a thermoplastic resin. A method for manufacturing a resin intake manifold, characterized in that an integrated intake manifold is obtained by molding a branch pipe part using a blow molding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63040449A JPH01216067A (en) | 1988-02-22 | 1988-02-22 | Manufacture of resin intake manifold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63040449A JPH01216067A (en) | 1988-02-22 | 1988-02-22 | Manufacture of resin intake manifold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01216067A true JPH01216067A (en) | 1989-08-30 |
Family
ID=12580951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63040449A Pending JPH01216067A (en) | 1988-02-22 | 1988-02-22 | Manufacture of resin intake manifold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01216067A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4216255A1 (en) * | 1992-05-16 | 1993-11-18 | Mann & Hummel Filter | Intake pipe and process for its manufacture |
| GB2338446A (en) * | 1998-04-07 | 1999-12-22 | Honda Motor Co Ltd | A resin intake member formed from first and second moulding steps |
-
1988
- 1988-02-22 JP JP63040449A patent/JPH01216067A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4216255A1 (en) * | 1992-05-16 | 1993-11-18 | Mann & Hummel Filter | Intake pipe and process for its manufacture |
| GB2338446A (en) * | 1998-04-07 | 1999-12-22 | Honda Motor Co Ltd | A resin intake member formed from first and second moulding steps |
| US6451238B1 (en) | 1998-04-07 | 2002-09-17 | Honda Giken Kogyo Kabushiki Kaisha | Process for producing intake member of resin, and intake member of resin |
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