JP2511239B2 - Synthetic resin intake pipe for engine and method of manufacturing the same - Google Patents
Synthetic resin intake pipe for engine and method of manufacturing the sameInfo
- Publication number
- JP2511239B2 JP2511239B2 JP24767293A JP24767293A JP2511239B2 JP 2511239 B2 JP2511239 B2 JP 2511239B2 JP 24767293 A JP24767293 A JP 24767293A JP 24767293 A JP24767293 A JP 24767293A JP 2511239 B2 JP2511239 B2 JP 2511239B2
- Authority
- JP
- Japan
- Prior art keywords
- intake pipe
- synthetic resin
- inner layer
- resin material
- 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
Classifications
-
- 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
- Injection Moulding Of Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車用エンジンに用
いられる合成樹脂製吸気管およびその製造方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin intake pipe used in an automobile engine and a method for manufacturing the intake pipe.
【０００２】[0002]
【従来の技術】従来、合成樹脂製吸気管の製造方法とし
ては、例えば特開昭５８−８２０５９号公報等に開示さ
れるものが知られている。2. Description of the Related Art Conventionally, as a method for manufacturing a synthetic resin intake pipe, one disclosed in, for example, Japanese Patent Application Laid-Open No. 58-82059 is known.
【０００３】この従来の製造方法は、低融点合金で形成
される中空中子を予め用意し、該中空中子を射出成形用
金型内にセットし、次いで、熱可塑性合成樹脂を金型内
に射出し、樹脂が固化した後、樹脂が溶解せず低融点合
金による中空中子のみが溶解する温度で加熱し、中空中
子を溶出して合成樹脂製吸気管を得るようにしている。In this conventional manufacturing method, a hollow core made of a low melting point alloy is prepared in advance, the hollow core is set in an injection molding die, and then a thermoplastic synthetic resin is placed in the die. After the resin is solidified and solidified, the resin is not melted and heated at a temperature at which only the hollow core made of the low melting point alloy is melted, and the hollow core is eluted to obtain a synthetic resin intake pipe.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、この従
来の製造方法にあっては、合成樹脂製吸気管を１つ作る
毎に中空中子を形成しなければならないものであった
し、また、中空中子を溶出する時に温度管理された加熱
工程を要するものであった為、多大な工程数，時間及び
コストを要するし、中空中子のセット精度等により製品
に厚みのバラツキが出易く、強度的，品質的にも安定性
に欠けるものであった。However, in this conventional manufacturing method, the hollow core must be formed each time one synthetic resin intake pipe is made, and Since a heating process with temperature control was required when the core was dissolved, a large number of processes, time and cost were required, and the product thickness could easily vary due to the setting accuracy of the hollow core, and the strength It lacked stability in terms of quality and quality.
【０００５】そこで、本出願人は、このような問題点を
解決する案として、先に、ブロー成形で成形された内層
と、該内層を中子として射出成形で内層と一体成形され
た外層とを有するエンジン用合成樹脂製吸気管を内容に
含む出願（特願昭６１−２８８４８５号）を行なった。Therefore, the present applicant has proposed, as a solution to such a problem, an inner layer formed by blow molding and an outer layer integrally formed with the inner layer by injection molding using the inner layer as a core. An application (Japanese Patent Application No. 61-288485) including an intake pipe made of a synthetic resin for an engine having the above is filed.
【０００６】しかし、ブロー成形による内層を中子とし
て射出成形で外層を成形する為、内層としては、射出成
形時に高温，高圧に耐え得るものでなければならない
し、また、最終的なエンジン用合成樹脂製吸気管は内層
と外層との２層構造となる為、内外層の密着性が要求さ
れる。However, since the outer layer is formed by injection molding while the inner layer formed by blow molding is used as the core, the inner layer must be able to withstand high temperature and high pressure during injection molding, and the final composition for engines is required. Since the resin intake pipe has a two-layer structure of an inner layer and an outer layer, adhesion between the inner and outer layers is required.
【０００７】[0007]
【課題を解決するための手段】本発明は、上述のような
問題点及び要求を解決することを目的とし、この目的達
成のために請求項１記載の発明では、 (a) 曲がり部を有する吸気管であること (b) 合成樹脂製の内層と、合成樹脂製の外層とを有する
複合吸気管であること (c) 前記内層の樹脂材の熱変形温度が外層の樹脂材の熱
変形温度以上で、且つ、内外層の樹脂材が同種の樹脂材
であること上記(a),(b),(c) の構成からなるエンジン用
合成樹脂製吸気管とした。SUMMARY OF THE INVENTION The present invention aims to solve the above-mentioned problems and requirements, and in order to achieve this object, the invention according to claim 1 has (a) a bent portion. Being an intake pipe (b) Being a composite intake pipe having an inner layer made of synthetic resin and an outer layer made of synthetic resin (c) The heat deformation temperature of the resin material of the inner layer is the heat deformation temperature of the resin material of the outer layer Above, the resin material of the inner and outer layers is the same kind of resin material. The synthetic resin intake pipe for an engine having the configuration of (a), (b), and (c) above.
【０００８】請求項２記載の発明では、曲がり部を有す
る合成樹脂製の内外層による複合吸気管の製造方法にお
いて、前記内外層それぞれの樹脂材として、内層の熱変
形温度が外層の熱変形温度以上で、且つ、同種の樹脂材
を選択し、ブロー成形により内層を成形する内層成形工
程と、該内層を中子として射出成形で内層と一体に外層
を成形する外層成形工程と、を有するエンジン用合成樹
脂製吸気管の製造方法とした。According to the second aspect of the present invention, in the method for manufacturing a composite intake pipe having inner and outer layers made of synthetic resin having a bent portion, the heat deformation temperature of the inner layer is the heat deformation temperature of the outer layer as the resin material of each of the inner and outer layers. An engine including the inner layer molding step of molding the inner layer by blow molding by selecting the same kind of resin material and the outer layer molding step of molding the outer layer integrally with the inner layer by injection molding using the inner layer as a core A method of manufacturing an intake pipe made of synthetic resin is used.
【０００９】ここで、内外層それぞれの樹脂材として、
グラスファイバー量を変化させることで内外層に熱変形
温度差を与えた同一樹脂を選択しても良いし、また、熱
変形温度差が異なる同系統樹脂の組み合わせを選択して
も良い。Here, as the resin material for each of the inner and outer layers,
The same resin may be selected in which the heat deformation temperature difference is given to the inner and outer layers by changing the glass fiber amount, or a combination of similar resins having different heat deformation temperature differences may be selected.
【００１０】[0010]
【作用】本発明のエンジン用合成樹脂製吸気管を製造す
るにあたっては、まず、内外層それぞれの樹脂材とし
て、内層の熱変形温度が外層の熱変形温度以上で、且
つ、同種の樹脂材が選択される。In producing the synthetic resin intake pipe for an engine of the present invention, first, as the resin material for each of the inner and outer layers, the heat deformation temperature of the inner layer is equal to or higher than the heat deformation temperature of the outer layer, and the same kind of resin material is used. To be selected.
【００１１】そして、内層成形工程において、ブロー成
形により内層が曲がり部を有する形状に成形され、外層
成形工程において、成形された内層の形状に適合させた
射出成形用金型内に内層を中子として配した後、樹脂材
を金型内に射出し、中子である内層の一部外周もしくは
全外周を樹脂材による外層で被覆することで曲がり部を
有する合成樹脂製の内外層による複合吸気管が製造され
る。Then, in the inner layer molding step, the inner layer is molded into a shape having a curved portion by blow molding, and in the outer layer molding step, the inner layer is placed in an injection molding mold adapted to the shape of the molded inner layer. After injecting the resin material into the mold, the inner and outer layers of the core are partially or entirely covered with the outer layer of the resin material to form a composite resin with a curved inner and outer layers. The tube is manufactured.
【００１２】従って、内層を中子として用いる製造方法
としている為、独立した中子成形工程や加熱による中子
溶出工程が不要になり、工程省略化により容易に曲がり
部を有する合成樹脂製吸気管を製造出来る。Therefore, since the manufacturing method uses the inner layer as a core, an independent core molding step and a core elution step by heating are unnecessary, and the synthetic resin intake pipe having a bent portion can be easily formed by omitting the steps. Can be manufactured.
【００１３】そして、内層の樹脂材の熱変形温度が外層
の樹脂材の熱変形温度以上である為、射出成形時に内層
が外層となる溶融状態の樹脂材により高温，高圧の影響
を受けることが無い。Since the thermal deformation temperature of the resin material of the inner layer is equal to or higher than the thermal deformation temperature of the resin material of the outer layer, the molten resin material having the inner layer as the outer layer may be affected by high temperature and high pressure during injection molding. There is no.
【００１４】さらに、内外層の樹脂材が同種の樹脂材で
ある為、相溶作用により密着強度の向上が図られる。Further, since the resin materials of the inner and outer layers are the same kind of resin material, the adhesion strength can be improved by the compatibility action.
【００１５】[0015]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１６】図１は本発明に係るエンジン用合成樹脂製
吸気管（以下、吸気管と称する）の第１実施例を示す断
面図である。FIG. 1 is a sectional view showing a first embodiment of a synthetic resin intake pipe for an engine (hereinafter referred to as an intake pipe) according to the present invention.
【００１７】吸気管１０は、ブロー成形製の内層１１
と、この内層１１の外周に被覆された外層１２と、この
外層１２の端部に一体的に形成されたフランジ部１３と
から構成されている。The intake pipe 10 has an inner layer 11 made of blow molding.
And an outer layer 12 that covers the outer periphery of the inner layer 11, and a flange portion 13 that is integrally formed at the end of the outer layer 12.
【００１８】次に、図２に示す上記吸気管１０の製造方
法を順を追って説明する。Next, a method of manufacturing the intake pipe 10 shown in FIG. 2 will be described step by step.
【００１９】先ず、図２（ａ）の如く、目的とする吸気
管１０に於けるダクト部１４の形状に見合った曲がり管
２０をブロー成形によって作成する。周知の如く、ブロ
ー成形では曲がり管２０の形状が如何に複雑であっても
成形することが可能である。First, as shown in FIG. 2 (a), a bend pipe 20 corresponding to the shape of the duct portion 14 in the target intake pipe 10 is formed by blow molding. As is well known, blow molding allows molding of the bent tube 20 no matter how complicated the shape thereof.
【００２０】次に、図２（ｂ）の如く、ブロー成形され
た曲がり管２０内に、射出成形時の高圧に抗して曲がり
管２０の形状を変形させない材料２１、例えば微粒の砂
或いは非圧縮性の液体を充填する。Next, as shown in FIG. 2 (b), a material 21 which does not deform the shape of the bent pipe 20 against the high pressure during injection molding, such as fine sand or non-sand, is placed in the blow molded bent pipe 20. Fill with a compressible liquid.
【００２１】その後、図２（ｃ）の如く、変形しないよ
うに処理を施した曲がり管２０を、射出成形用金型２２
内に中子としてセットする。Thereafter, as shown in FIG. 2 (c), the bent pipe 20 treated so as not to be deformed is put into a mold 22 for injection molding.
Set as a core inside.
【００２２】このセットは、射出成形時に中子が移動し
ないように常法に従って行なう。This setting is carried out by a conventional method so that the core does not move during injection molding.
【００２３】この状態で図２（ｄ）の如く、合成樹脂材
を射出成形用金型２２内に射出し、金型２２と曲がり管
２０とで形成される空間２３内に充填する。この際の成
形条件は、使用材料，形状等考慮して常法に従って行な
う。In this state, as shown in FIG. 2 (d), a synthetic resin material is injected into the injection molding die 22 to fill the space 23 formed by the die 22 and the bent pipe 20. The molding conditions at this time are determined in accordance with ordinary methods, taking into consideration the materials used, the shape, etc.
【００２４】これによって、曲がり管２０の外側には射
出された合成樹脂材が一体的に被覆して外層１２を形成
すると共に、一端部にフランジ部１３が形成される。As a result, the outer side of the bent pipe 20 is integrally covered with the injected synthetic resin material to form the outer layer 12, and the flange portion 13 is formed at one end.
【００２５】成形が完了すると、金型２２を形開きして
成形品を取り出し、曲がり管２０内の充填材２１を取り
取り出すことで、図１に示す吸気管１０を得ることがで
きる。When the molding is completed, the mold 22 is opened, the molded product is taken out, and the filling material 21 in the curved pipe 20 is taken out to obtain the intake pipe 10 shown in FIG.
【００２６】この時、内層１１となるブロー成形材料と
外層１２となる射出成形材料の組み合わせが重要とな
る。At this time, it is important to combine a blow molding material for the inner layer 11 and an injection molding material for the outer layer 12.
【００２７】例えば、射出成形材料にナイロン６６（補
強材入り）を用いる場合、高温，高圧（樹脂温度２８０
℃〜３００℃，射出圧８００kg/cm2）で射出するので、
ブロー成形材料は、この条件で熱変形しない、あるいは
極めて小さい変形で抑えることの出来る材料でなければ
ならない。For example, when nylon 66 (with a reinforcing material) is used as the injection molding material, high temperature and high pressure (resin temperature 280
Since it is injected at ℃ -300 ℃, injection pressure 800kg / cm 2 ),
The blow molding material must be a material that does not undergo thermal deformation under these conditions or that can be suppressed with extremely small deformation.
【００２８】ここでナイロン６及びナイロン６６の熱変
形温度を示すと、以下の表のようになる。尚、ＧＦはグ
ラスファイバーの混合比である。The heat distortion temperatures of nylon 6 and nylon 66 are shown in the table below. In addition, GF is a mixing ratio of glass fiber.
【００２９】[0029]
【表１】 従って、内層１１の熱変形を抑える意味で、内層１１と
外層１２との熱変形温度が同等、もしくは内層１１の熱
変形温度が外層１２の熱変形温度より高いという条件、
即ち、内層１１の樹脂材の熱変形温度が外層１２の樹脂
材の熱変形温度以上であるという条件に適合するナイロ
ン６またはナイロン６６同士の組み合わせや、ナイロン
６とナイロン６６との組み合わせが前記表から得られる
ことになる。[Table 1] Therefore, in order to suppress the thermal deformation of the inner layer 11, the thermal deformation temperature of the inner layer 11 and the outer layer 12 are equal, or the thermal deformation temperature of the inner layer 11 is higher than the thermal deformation temperature of the outer layer 12,
That is, the combination of nylon 6 or nylon 66, or the combination of nylon 6 and nylon 66, which meets the condition that the heat deformation temperature of the resin material of the inner layer 11 is equal to or higher than the heat deformation temperature of the resin material of the outer layer 12, is shown in the table above. Will be obtained from
【００３０】そして、同種のナイロン系同士の組み合わ
せとなる為、射出成形時に相溶し、２層間の密着性が向
上するので、更に有利である。Further, since the same type of nylons are combined, they are compatible with each other during injection molding and the adhesion between the two layers is improved, which is further advantageous.
【００３１】また、エンジン用吸気管には、物性的にガ
ソリンやブローバイガスの透過率の低いものという要求
がある為、この面からもこれらの透過率の低いナイロン
系樹脂は有利である。Since the engine intake pipe is required to have low physical properties such as gasoline and blow-by gas, nylon resins having low permeability are advantageous also in this respect.
【００３２】図３は本発明に係る吸気管１０の第２実施
例示す断面図である。FIG. 3 is a sectional view showing a second embodiment of the intake pipe 10 according to the present invention.
【００３３】この第２実施例は、機能部位としてフラン
ジ部１３以外に通気パイプ１６を付加した例であり、こ
のような吸気管１０にも適応出来る。The second embodiment is an example in which a ventilation pipe 16 is added as a functional portion in addition to the flange portion 13, and can be applied to such an intake pipe 10.
【００３４】図４は本発明に係る吸気管１０の第３実施
例を示す断面図である。FIG. 4 is a sectional view showing a third embodiment of the intake pipe 10 according to the present invention.
【００３５】この第３実施例は、内層１１の厚みを厚く
し、この内層１１自体でダクト部１４を形成し、機能部
位であるフランジ部１３，通気パイプ１６及び取付ネジ
部１７のみを外層１２として部分的に２重構造とした例
であり、このような吸気管１０にも適応出来る。In the third embodiment, the thickness of the inner layer 11 is increased, the duct portion 14 is formed by the inner layer 11 itself, and only the flange portion 13, the ventilation pipe 16 and the mounting screw portion 17 which are functional parts are formed in the outer layer 12. Is an example in which the structure is partially doubled, and can be applied to such an intake pipe 10.
【００３６】以上のように、本実施例の吸気管１０によ
れば、以下に述べるような効果が達成される。As described above, according to the intake pipe 10 of this embodiment, the following effects can be achieved.
【００３７】 ブロー成形により成形された合成樹脂
製の曲がり管２０が射出成形時に中子の機能を果しなが
ら製品と一体化する為、独立した中子成形工程及び加熱
による中子溶出工程が不要になり、合成樹脂製の吸気管
１０を、工程数が少なく短時間で且つコスト安に製造出
来る。Since the bent pipe 20 made of synthetic resin formed by blow molding is integrated with the product while performing the function of the core at the time of injection molding, an independent core molding step and a core elution step by heating are unnecessary. Therefore, the intake pipe 10 made of synthetic resin can be manufactured in a short time and at a low cost with a small number of steps.
【００３８】 内層１１のナイロン樹脂材の熱変形温
度が外層１２のナイロン樹脂材の熱変形温度以上である
樹脂材を組み合わせるようにした為、射出成形時に内層
１１が外層１２となる溶融状態の樹脂材により高温，高
圧の影響を受けることが無い。Since a resin material having a heat distortion temperature of the nylon resin material of the inner layer 11 that is equal to or higher than the heat distortion temperature of the nylon resin material of the outer layer 12 is combined, a resin in a molten state in which the inner layer 11 becomes the outer layer 12 during injection molding. Not affected by high temperature and high pressure by the material.
【００３９】 内外層１１，１２の樹脂材が同種のナ
イロン系樹脂材である為、相溶作用により密着強度の向
上が図られる。Since the resin material of the inner and outer layers 11 and 12 is the same type of nylon resin material, the adhesion strength can be improved by the compatibility action.
【００４０】 内外層１１，１２の樹脂材をナイロン
系樹脂材とした為、ガソリンやブローバイガス等の透過
率を低減させることが出来る。Since the resin material of the inner and outer layers 11, 12 is a nylon resin material, the transmittance of gasoline, blow-by gas, etc. can be reduced.
【００４１】以上、本発明を実施例により説明してきた
が、具体的な構成や素材については、この実施例に限ら
れるものではなく、本発明の要旨を変更しない範囲にお
ける構成や素材の変更があっても本発明に含まれる。Although the present invention has been described above with reference to the embodiment, the specific constitution and material are not limited to this embodiment, and the constitution and the material can be changed without departing from the scope of the present invention. Even if it exists, it is included in the present invention.
【００４２】[0042]
【発明の効果】請求項１記載の本発明では、(a) 曲がり
部を有する吸気管であること、(b) 合成樹脂製の内層
と、合成樹脂製の外層とを有する複合吸気管であるこ
と、(c) 前記内層の樹脂材の熱変形温度が外層の樹脂材
の熱変形温度以上で、且つ、内外層の樹脂材が同種の樹
脂材であること、上記(a),(b),(c) の構成からなるエン
ジン用合成樹脂製吸気管とした為、内外層間の熱影響が
抑えられるという製造上の有利性や内外層の密着強度が
高いという強度上の有利性を持ちながら、曲がり部を有
する複雑な形状のエンジン用合成樹脂製吸気管を提供で
きるという効果が得られる。According to the present invention as set forth in claim 1, (a) an intake pipe having a bent portion, and (b) a composite intake pipe having an inner layer made of synthetic resin and an outer layer made of synthetic resin. (C) the thermal deformation temperature of the resin material of the inner layer is equal to or higher than the thermal deformation temperature of the resin material of the outer layer, and the resin material of the inner and outer layers are the same kind of resin material, (a), (b) Since the intake pipe made of synthetic resin for engine with the configuration of (c) has the manufacturing advantage that the thermal effect between the inner and outer layers is suppressed and the strength of the adhesion between the inner and outer layers is high, Therefore, it is possible to provide an engine-made synthetic resin intake pipe having a complicated shape with a bent portion.
【００４３】請求項２記載の本発明では、曲がり部を有
する合成樹脂製の内外層による複合吸気管の製造方法に
おいて、前記内外層それぞれの樹脂材として、内層の熱
変形温度が外層の熱変形温度以上で、且つ、同種の樹脂
材を選択し、ブロー成形により内層を成形する内層成形
工程と、該内層を中子として射出成形で内層と一体に外
層を成形する外層成形工程と、を有する方法とした為、
曲がり部を有する複雑な形状の複合吸気管の製造方法で
ありながら、内層を中子とする工程省略化による製造容
易性と、射出成形時に内層が外層となる溶融状態の樹脂
材により高温，高圧の影響を受けることが無いという熱
影響排除と、内外層の相溶作用による密着強度向上を図
れるエンジン用合成樹脂製吸気管の製造方法を提供でき
るという効果が得られる。According to the second aspect of the present invention, in the method for manufacturing a composite intake pipe having inner and outer layers made of synthetic resin having a bent portion, as the resin material of each of the inner and outer layers, the heat deformation temperature of the inner layer is the heat deformation of the outer layer. It has an inner layer molding step of molding the inner layer by blow molding at a temperature equal to or higher than that of the same kind, and an outer layer molding step of molding the outer layer integrally with the inner layer by injection molding using the inner layer as a core. Because it was a method,
Although it is a method of manufacturing a complex intake pipe with a complicated shape that has a bent portion, it is easy to manufacture by omitting the process with the inner layer as the core, and the high temperature and high pressure due to the molten resin material where the inner layer is the outer layer during injection molding. It is possible to provide a method of manufacturing a synthetic resin intake pipe for an engine, which eliminates the influence of heat and is capable of improving the adhesion strength due to the compatibility action of the inner and outer layers.
【図１】本発明に係るエンジン用合成樹脂製吸気管の第
１実施例を示す断面図である。FIG. 1 is a sectional view showing a first embodiment of a synthetic resin intake pipe for an engine according to the present invention.
【図２】第１実施例の製造工程を示す説明図である。FIG. 2 is an explanatory view showing a manufacturing process of the first embodiment.
【図３】本発明に係るエンジン用合成樹脂製吸気管の第
２実施例を示す断面図である。FIG. 3 is a sectional view showing a second embodiment of the synthetic resin intake pipe for an engine according to the present invention.
【図４】本発明に係るエンジン用合成樹脂製吸気管の第
３実施例を示す断面図である。FIG. 4 is a sectional view showing a third embodiment of the engine synthetic resin intake pipe according to the present invention.
１０ エンジン用合成樹脂製吸気管 １１ ブロー成形製の内層 １２ 射出成形製の外層 ２０ 曲がり管 ２１ 充填材料 ２２ 射出成形用金型 10 Synthetic Resin Intake Pipe for Engine 11 Blow Molded Inner Layer 12 Injection Molded Outer Layer 20 Bent Pipe 21 Filling Material 22 Injection Mold
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｄ 31/00 2126−4Ｆ Ｂ２９Ｄ 31/00 // Ｂ２９Ｌ 9:00 Ｂ２９Ｌ 9:00 23:00 23:00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location B29D 31/00 2126-4F B29D 31/00 // B29L 9:00 B29L 9:00 23:00 23 : 00
Claims (4)
複合吸気管であること (c) 前記内層の樹脂材の熱変形温度が外層の樹脂材の熱
変形温度以上で、且つ、内外層の樹脂材が同種の樹脂材
であること上記(a),(b),(c) の構成からなるエンジン用
合成樹脂製吸気管。1. An intake pipe having (a) a bent portion (b) a composite intake pipe having an inner layer made of synthetic resin and an outer layer made of synthetic resin (c) a resin material for the inner layer The heat deformation temperature is equal to or higher than the heat deformation temperature of the resin material of the outer layer, and the resin material of the inner and outer layers is the same kind of resin material. Synthetic resin for engines having the configuration of (a), (b), (c) above. Made intake pipe.
よる複合吸気管の製造方法において、 前記内外層それぞれの樹脂材として、内層の熱変形温度
が外層の熱変形温度以上で、且つ、同種の樹脂材を選択
し、 ブロー成形により内層を成形する内層成形工程と、 該内層を中子として射出成形で内層と一体に外層を成形
する外層成形工程と、 を有するエンジン用合成樹脂製吸気管の製造方法。2. A method for manufacturing a composite intake pipe having inner and outer layers made of synthetic resin having a bent portion, wherein the resin material for each of the inner and outer layers is such that the heat deformation temperature of the inner layer is equal to or higher than the heat deformation temperature of the outer layer. A synthetic resin intake pipe for an engine, which comprises an inner layer molding step of molding the inner layer by blow molding, and an outer layer molding step of molding the inner layer integrally with the inner layer by injection molding using the inner layer as a core. Manufacturing method.
気管の製造方法において、 前記内外層それぞれの樹脂材として、グラスファイバー
量を変化させることで内外層に熱変形温度差を与えた同
一樹脂を選択したことを特徴とするエンジン用合成樹脂
製吸気管の製造方法。3. The method for manufacturing an engine synthetic resin intake pipe according to claim 2, wherein the resin material of each of the inner and outer layers is made the same by changing the amount of glass fiber to give a difference in heat deformation temperature to the inner and outer layers. A method of manufacturing a synthetic resin intake pipe for an engine, characterized in that a resin is selected.
気管の製造方法において、 前記内外層それぞれの樹脂材として、熱変形温度差が異
なる同系統樹脂の組み合わせを選択したことを特徴とす
るエンジン用合成樹脂製吸気管の製造方法。4. The method for manufacturing a synthetic resin intake pipe for an engine according to claim 2, wherein a combination of resins of the same system having different thermal deformation temperature differences is selected as the resin material of each of the inner and outer layers. Manufacturing method of synthetic resin intake pipe for engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24767293A JP2511239B2 (en) | 1993-10-04 | 1993-10-04 | Synthetic resin intake pipe for engine and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24767293A JP2511239B2 (en) | 1993-10-04 | 1993-10-04 | Synthetic resin intake pipe for engine and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0835458A JPH0835458A (en) | 1996-02-06 |
| JP2511239B2 true JP2511239B2 (en) | 1996-06-26 |
Family
ID=17166947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24767293A Expired - Fee Related JP2511239B2 (en) | 1993-10-04 | 1993-10-04 | Synthetic resin intake pipe for engine and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2511239B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6652699B1 (en) * | 2000-02-17 | 2003-11-25 | Salflex Polymers Ltd. | Flanged member with barrier layer |
| JP4305456B2 (en) | 2006-02-23 | 2009-07-29 | トヨタ自動車株式会社 | Electric equipment mounting structure and electric vehicle |
| DE102008019577A1 (en) | 2008-04-18 | 2009-10-22 | Veritas Ag | Fluid pipe i.e. charge air pipe, manufacturing method, involves blow-molding of pipe blank with intervention of functional section so that functional sections are kept undeformed |
| DE102011120347A1 (en) | 2011-11-30 | 2013-06-06 | Maik Hentschel | Structured multi-layer tubular air charge line for internal combustion engine, has inner layer for thermal and sound insulation which is made of thermoplastic foam layer of variable layer thickness and formed by blow molding process |
| DE102012004622A1 (en) | 2012-03-06 | 2013-09-12 | Veritas Ag | Method and device for producing a hollow body |
| JP5949809B2 (en) * | 2014-02-28 | 2016-07-13 | トヨタ自動車株式会社 | Intake pipe and method of forming intake pipe |
| JP7451856B2 (en) * | 2019-08-27 | 2024-03-19 | 三桜工業株式会社 | Method for manufacturing a resin pipe with a fixing member and apparatus for manufacturing a resin pipe with a fixing member |
-
1993
- 1993-10-04 JP JP24767293A patent/JP2511239B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0835458A (en) | 1996-02-06 |
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