JPH081158B2 - Manufacturing method of synthetic resin intake pipe for engine - Google Patents

Manufacturing method of synthetic resin intake pipe for engine

Info

Publication number
JPH081158B2
JPH081158B2 JP13084187A JP13084187A JPH081158B2 JP H081158 B2 JPH081158 B2 JP H081158B2 JP 13084187 A JP13084187 A JP 13084187A JP 13084187 A JP13084187 A JP 13084187A JP H081158 B2 JPH081158 B2 JP H081158B2
Authority
JP
Japan
Prior art keywords
pipe
synthetic resin
intake pipe
manufacturing
bent
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
Application number
JP13084187A
Other languages
Japanese (ja)
Other versions
JPS63295853A (en
Inventor
敏郎 井島
仁 小笠原
Original Assignee
カルソニック株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by カルソニック株式会社 filed Critical カルソニック株式会社
Priority to JP13084187A priority Critical patent/JPH081158B2/en
Publication of JPS63295853A publication Critical patent/JPS63295853A/en
Publication of JPH081158B2 publication Critical patent/JPH081158B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05CINDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08Thermoplastics

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 (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
吸気管の製造方法に関するものである。
Description: TECHNICAL FIELD The present invention relates to a method for manufacturing a synthetic resin intake pipe used in an automobile engine.

(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。
(Prior Art) Conventionally, as a method for manufacturing a synthetic resin intake pipe, for example, the one disclosed in JP-A-58-82059 is known.

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 formed 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 injected into the die. ,
After the resin is 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.

(発明が解決しようとする問題点) 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しするし、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。
(Problems to be Solved by the Invention) However, in this conventional manufacturing method, the hollow core has to be formed every time one synthetic resin intake pipe is manufactured, and Since the heating process with temperature control was required when the hollow core was eluted, a large number of steps, time and cost were required, and the thickness of the product varied due to the accuracy of setting the hollow core. It was easy, and lacked stability in terms of strength and quality.

(問題点を解決するための方法) 本発明は、上述のような問題点を解決することを目的
とし、この目的達成のために本発明では、ブロー成形に
より吸気管の管路形状を成す合成樹脂製曲がり管を成形
し、この曲がり管内に、直径0.3〜3mmの略球形の粒子を
集めた集合粒子物質にこの粒子同士の間隙を埋めるよう
に液体を加えて成る充填材を充填し、これを吸気管の外
形形状の射出成形用金型内に中子として配した後、合成
樹脂材を金型内に射出し、曲がり管の外周を合成樹脂材
で被覆すると共に、一端部にフランジ部を一体的に形成
したことを特徴とする方法とした。
(Method for Solving Problems) The present invention aims to solve the above-mentioned problems, and in order to achieve this object, the present invention uses a blow molding method to form a pipe shape of an intake pipe. Mold a resin-made bent tube, and fill the inside of this bent tube with a filler consisting of aggregated particle substances that collect substantially spherical particles with a diameter of 0.3 to 3 mm and add liquid to fill the gaps between these particles. Is placed as a core in a die for injection molding of the outer shape of the intake pipe, and then a synthetic resin material is injected into the die to cover the outer circumference of the bent pipe with the synthetic resin material and a flange portion at one end. Was integrally formed.

(作 用) 従って、本発明のエンジン用合成樹脂製吸気管の製造
方法によれば、ブロー成形により成形された合成樹脂製
曲がり管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
子の溶出工程が不要になり、工程の省略を図れる。ま
た、この曲がり管に集合粒子物質から成る充填材を充填
するので、合成樹脂の射出圧力により曲がり管が変形す
るのを防止できる。
(Operation) Therefore, according to the method for manufacturing an engine synthetic resin intake pipe of the present invention, the synthetic resin bent pipe molded by blow molding is integrated with the product while performing the function of the core during injection molding. Therefore, the separate core molding step and the core elution step by heating are not required, and the steps can be omitted. Further, since the bent pipe is filled with the filler made of the aggregated particle substance, it is possible to prevent the bent pipe from being deformed by the injection pressure of the synthetic resin.

また、ブロー成形による合成樹脂製曲がり管は、最終
的に得られる合成樹脂製吸気管の内層となり、この内層
と射出成形による被覆層(外層)との二重構造により、
管厚のバラツキ防止や高い管強度の確保が達成される。
しかも、二重構造となっているから、吸気通路を通過す
るガソリン,ブローバイガス等の透過率が低下できる。
In addition, the synthetic resin bent pipe by blow molding becomes the inner layer of the synthetic resin intake pipe finally obtained, and due to the double structure of this inner layer and the coating layer (outer layer) by injection molding,
Prevention of variations in pipe thickness and securing of high pipe strength are achieved.
Moreover, because of the double structure, the permeability of gasoline, blow-by gas, etc. passing through the intake passage can be reduced.

さらに、フランジ部は、被覆層と共に射出成形時に形
成される為、別工程での成形や接合を要さず、しかも、
被覆層と一体に形成される為、外力を受けても強度的信
頼性が高い。
Furthermore, since the flange portion is formed at the time of injection molding together with the coating layer, there is no need for molding or joining in a separate process, and moreover,
Since it is formed integrally with the coating layer, it has high strength reliability even if it receives an external force.

また、充填材には集合粒子物質の間隙を埋める液体が
加えられているため、曲がり管に充填材を充填する際に
粒子が飛散しないようにできると共に、充填時に粒子が
曲がり管の途中でアーチ作用を起こして詰まることがな
いようにできる。加えて、粒子は略球形に形成されてい
るから、流動性に富み、かつ、力の伝達性も良い。
In addition, since the filler is filled with a liquid that fills the gap between the aggregated particles, it is possible to prevent the particles from scattering when the curved pipe is filled with the filler, and at the time of filling, the particles are arched in the middle of the curved pipe. It is possible to prevent it from getting stuck due to its action. In addition, since the particles are formed into a substantially spherical shape, they are highly fluid and have good force transmission.

(実 施 例) 以下、本発明の実施例を図面に基づいて説明する。(Examples) Examples of the present invention will be described below with reference to the drawings.

第1図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.

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、吸気管路(管路)15が形
成されたダクト部14と、このダクト部14の途中に一体的
に形成された通気パイプ16とから構成されている。
The intake pipe 10 includes a blow-molded inner layer 11, an outer layer 12 that covers the outer periphery of the inner layer 11, a flange portion 13 integrally formed at an end of the outer layer 12, and an intake pipe line (pipe line). ) 15 is formed, and a ventilation pipe 16 is integrally formed in the middle of the duct portion 14.

尚、前記通気パイプ16には、吸気量センサのピックア
ップパイプやブローバイガス環流パイプ等が接続され
る。
The ventilation pipe 16 is connected with a pickup pipe of an intake air amount sensor, a blow-by gas recirculation pipe, or the like.

次に、第2図に示す上記吸気管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.

先ず、第2図(a)の如く、目的とする吸気管10に於
ける吸気管路15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 target intake pipe 15 in the intake pipe 10 is formed by blow molding. As is well known, blow molding enables molding of the bent tube 20 regardless of the complexity of the shape.

次に、第2図(b)の如く、ブロー成形された曲がり
管20内に充填材21を充填する。即ち、この充填材21は射
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
いためのもので、第3図に示すように、直径3mm程度の
略球形の粒子を集めた集合粒子物質、例えば本実施例で
はセラミックビーズ21aにこのセラミックビーズ21aの間
隙を埋める量の水21bを加えて成るものである。
Next, as shown in FIG. 2 (b), the blow-molded bent pipe 20 is filled with the filling material 21. That is, this filler 21 is for preventing the shape of the bent tube 20 from being deformed against the high pressure at the time of injection molding, and as shown in FIG. 3, aggregate particles formed by collecting substantially spherical particles having a diameter of about 3 mm. The material is, for example, ceramic beads 21a in this embodiment, and water 21b is added in an amount to fill the gaps between the ceramic beads 21a.

このように、充填材21にはセラミックビーズ21aの間
隙を埋める水21bが加えられているので、セラミックビ
ーズ21a同士に水21bの表面張力が働いて相互に引かれ合
い、この充填時にセラミックビーズ21aが周囲に飛び散
らないようにできる。また、セラミックビーズ21aが略
球形であるし水21bを加えていることで、充填材21の流
動性が増し、充填時に充填材21が曲がり管20の途中に詰
まるといったことが生じ難い。尚、この集合粒子物質と
しては直径0.3〜3mmの大きさの砂やガラス,金属製のビ
ーズ等を用いることができ、また、間隙を埋めるものと
して水21b以外の他の液体を用いることができる。
As described above, since the filling material 21 is added with the water 21b that fills the gaps between the ceramic beads 21a, the surface tension of the water 21b acts on the ceramic beads 21a to draw each other, and at the time of filling, the ceramic beads 21a are filled. Can be prevented from scattering around. Further, since the ceramic beads 21a are substantially spherical and water 21b is added, the fluidity of the filling material 21 is increased, and the filling material 21 is unlikely to be blocked in the middle of the bent pipe 20 during filling. As the aggregate particle substance, sand, glass, or metal beads having a diameter of 0.3 to 3 mm can be used, and a liquid other than water 21b can be used to fill the gap. .

その後、第2図(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。
After that, as shown in FIG. 2 (c), the bent tube 20 treated so as not to be deformed is set in the injection molding die 22 as a core.

このセットは、射出成形時に曲がり管20が移動しない
ように常法に従って行なう。
This setting is performed according to a conventional method so that the bent tube 20 does not move during injection molding.

この状態で第2図(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。尚、このとき
曲がり管20には合成樹脂の射出圧が加えられるが充填材
21を充填しているので変形し難い。例えば、第4図に示
すように上下方向から1000Kg/cm2の荷重で加圧したとき
の充填材21の粒子の直径と曲がり管20の変形量の関係を
示すと第5図の通りであって、折り線aは粒子が球形の
場合を示し、折れ線bは粒子が多角形の場合を示す。こ
のように粒子が略球形の場合の方が曲がり管20の変形量
は少ない。
In this state, as shown in FIG. 2D, the synthetic resin material is injected into the injection molding die 22 and filled in 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. At this time, injection pressure of synthetic resin is applied to the bent pipe 20, but the filling material
It is hard to deform because it is filled with 21. For example, as shown in FIG. 4, the relationship between the diameter of the particles of the filler 21 and the amount of deformation of the bent pipe 20 when pressed with a load of 1000 kg / cm 2 from above and below is shown in FIG. The polygonal line a shows the case where the particles are spherical, and the polygonal line b shows the case where the particles are polygonal. As described above, the amount of deformation of the bent tube 20 is smaller when the particles are substantially spherical.

合成樹脂材の射出によって、曲がり管20の外側には合
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、ダクト部14に通気パイプ16が
形成される。
By injection of a synthetic resin material, the outside of the bent pipe 20 is integrally covered with a synthetic resin material to form the outer layer 12, and
A flange portion 13 is formed at one end portion, and a ventilation pipe 16 is formed at the duct portion 14.

成形が完了すると、金型22を型開きして成形品を取り
出し、曲がり管20内の充填材21を取り取り出し、さら
に、通気パイプ16の内径と同じ穴を内層11にあけてパイ
プ穴16aとすることで、第1図に示す吸気管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, the filling material 21 in the bent pipe 20 is taken out, and the same hole as the inner diameter of the ventilation pipe 16 is opened in the inner layer 11 to form the pipe hole 16a. By doing so, the intake pipe 10 shown in FIG. 1 can be obtained.

以上のように、本実施例の吸気管10の製造方法によれ
ば、以下に述べるような効果が達成される。
As described above, according to the method for manufacturing the intake pipe 10 of the present embodiment, the following effects can be achieved.

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。
Bent pipe made of synthetic resin molded by blow molding
Since 20 functions as a core during injection molding and is integrated with the product, an independent core molding process and core elution process by heating are unnecessary, and the intake pipe 10 made of synthetic resin It can be manufactured in a short time and at low cost.

ブロー成形による合成樹脂製曲がり管20は、最終的
に得られる吸気管10の内層11となり、この内層11と射出
成形による外層12との二重構造により、管厚のバラツキ
防止や高い管強度の確保が達成される。
The synthetic resin bent pipe 20 formed by blow molding becomes the inner layer 11 of the finally obtained intake pipe 10, and the double structure of this inner layer 11 and the outer layer 12 formed by injection molding prevents variation in pipe thickness and ensures high pipe strength. Ensuring is achieved.

曲がり管20に充填材21を充填するので合成樹脂材の
射出時に曲がり管20が変形し難く管厚のバラツキ防止が
達成される。また、充填材21は略球形のセラミックビー
ズ(集合粒子物質)21aで構成されているため、特に高
い強度が得られる。
Since the bending pipe 20 is filled with the filling material 21, the bending pipe 20 is less likely to be deformed when the synthetic resin material is injected, and variation in the pipe thickness is prevented. Further, since the filler 21 is composed of substantially spherical ceramic beads (aggregate particle substance) 21a, particularly high strength can be obtained.

充填材21に水21bを加えているため、充填時にセラ
ミックビーズ21aが周囲に飛散することがなく、また、
流動性も良くなって、作業性が向上する。
Since water 21b is added to the filler 21, the ceramic beads 21a do not scatter around during filling, and
The fluidity is improved and workability is improved.

機能部位であるフランジ部13や通気パイプ16は、外
層12と共に射出成形時に形成される為、別工程での成形
や接合を要さず、機能部位付加のための工程が省略出来
る。
Since the flange portion 13 and the ventilation pipe 16 which are the functional portions are formed at the time of injection molding together with the outer layer 12, molding or joining in a separate step is not required, and the step for adding the functional portion can be omitted.

機能部位であるフランジ部13や通気パイプ16は、外
層12と一体に形成される為、外力を受けても強度的信頼
性が高い。
Since the flange portion 13 and the ventilation pipe 16 which are the functional portions are formed integrally with the outer layer 12, the strength reliability is high even if an external force is applied.

以上、本発明を実施例により説明してきたが、具体的
な製造工程については、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工程の追
加や工程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 manufacturing process is not limited to this embodiment, and there are additions and modifications of the process within the scope not changing the gist of the present invention. Also included in the present invention.

例えば、上記実施例では、曲がり管20の肉厚を略均一
にした場合に就いて説明したが、肉厚を強度要求に応じ
て変えることも可能である。
For example, in the above embodiment, the case where the wall thickness of the bent pipe 20 is made substantially uniform has been described, but the wall thickness can be changed according to the strength requirement.

この場合には、ブロー成形時に任意に選定すれば良
い。
In this case, the blow molding may be arbitrarily selected.

更に、曲がり形状も一個所に限らず、複数個所に設け
ても良い。この場合も、ブロー成形時に処置できる為、
射出成形時に特別な処置を施す必要がない。
Further, the curved shape is not limited to one place, and may be provided at a plurality of places. Also in this case, since it can be treated during blow molding,
No special treatment is required during injection molding.

又、実施例では、突出機能部位として通気パイプの例
を示したが、取付ネジ部や他の突出機能部位を形成して
も良い。
Further, in the embodiment, the vent pipe is shown as an example of the protruding functional portion, but a mounting screw portion or another protruding functional portion may be formed.

又、第5図に示すように、ブロー成形時、フランジ用
突起部13aに凹凸粗面13bを形成し、アンカー効果により
内外層13a,13の密着性を高めるようにしても良い。
Further, as shown in FIG. 5, a rough surface 13b may be formed on the flange protrusion 13a during blow molding to enhance the adhesion between the inner and outer layers 13a, 13 by the anchor effect.

又、本発明に係る吸気管は、エンジンに取り付ける場
合には、外気を直接吸入する場所に設けるタイプでも、
ターボチャージャの過給側と連結するタイプでも良い。
又、エンジンに直接取り付ける方式に限らず、エンジン
に連通する吸気通路を形成する経路に設けるタイプであ
っても良い。
Further, when the intake pipe according to the present invention is attached to an engine, it may be a type provided at a place for directly sucking the outside air,
A type that is connected to the supercharged side of the turbocharger may be used.
Further, it is not limited to the method of directly attaching to the engine, but may be a type provided in a path forming an intake passage communicating with the engine.

(発明の効果) 以上のように本発明の製造方法にあっては、ブロー成
形で合成樹脂製曲がり管を成形し、この曲がり管内に集
合粒子物質に液体を加えた充填材を充填し、これを所望
形状の射出成形用金型内に中子として配した後、合成樹
脂材を金型内に射出し、中子の外周を合成樹脂材で被覆
すると共に、一端部にフランジ部を一体的に形成したこ
とを特徴とする方法として為、工程の簡略化、管厚のバ
ラツキ防止及び高い管強度の確保が図られると共に、機
能部位であるフランジ部を同時成形で、しかも外力に対
する高い強度で形成出来るという効果が得られる。
(Effects of the Invention) As described above, in the manufacturing method of the present invention, a curved pipe made of synthetic resin is formed by blow molding, and the curved pipe is filled with a filler obtained by adding a liquid to an aggregate particle substance. After placing as a core in the injection-molding mold of the desired shape, the synthetic resin material is injected into the mold, the outer periphery of the core is covered with the synthetic resin material, and the flange part is integrated at one end. Since it is a method characterized by being formed in the above, it is possible to simplify the process, prevent variations in pipe thickness, and secure high pipe strength.At the same time, the flange, which is a functional part, is formed at the same time with high strength against external force. The effect that it can be formed is obtained.

さらに、充填材を充填するときに充填材が飛散したり
曲がり管内で詰まったりすることのないようにできるた
めに、充填時の作業性が非常に良いという効果も併せて
得られる。
Further, since it is possible to prevent the filler from scattering or bending and clogging in the pipe when the filler is filled, the workability at the time of filling is also excellent.

【図面の簡単な説明】[Brief description of drawings]

第1図は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、第2図は第1実施例の製造工程
を示す説明図、第3図は充填材を示す断面図、第4図は
実験状態を示す説明図、第5図は集合粒子物質の直径と
曲がり管の変形量との関係を示す折れ線グラフである。 10……エンジン用合成樹脂製吸気管 13……フランジ部 14……ダクト部 15……吸気管路(管路) 20……曲がり管 21……充填材 21a……セラミックビーズ(集合粒子物質) 21b……水(液体) 22……射出成形用金型
1 is a sectional view showing a first embodiment of an engine synthetic resin intake pipe according to the present invention, FIG. 2 is an explanatory view showing a manufacturing process of the first embodiment, and FIG. 3 is a sectional view showing a filler. FIG. 4 and FIG. 4 are explanatory diagrams showing the experimental state, and FIG. 5 is a line graph showing the relationship between the diameter of the aggregated particle substance and the amount of deformation of the bent tube. 10 …… Synthetic resin intake pipe for engine 13 …… Flange part 14 …… Duct part 15 …… Intake pipe line (pipe line) 20 …… Bending pipe 21 …… Filling material 21a …… Ceramic beads (aggregate particulate matter) 21b …… Water (liquid) 22 …… Injection mold

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】ブロー成形により吸気管の管路形状を成す
合成樹脂製曲がり管を成形し、この曲がり管内に、直径
0.3〜3mmの略球形の粒子を集めた集合粒子物質にこの粒
子同士の間隙を埋めるように液体を加えて成る充填材を
充填し、これを吸気管の外形形状の射出成形用金型内に
中子として配した後、合成樹脂材を金型内に射出し、曲
がり管の外周を合成樹脂材で被覆すると共に、一端部に
フランジ部を一体的に形成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。
1. A bent pipe made of synthetic resin, which is in the shape of a pipe line of an intake pipe, is formed by blow molding, and a diameter is formed in the bent pipe.
Filling the aggregate particle material, which is a collection of approximately 3 mm to 3 mm spherical particles, with a liquid so as to fill the gaps between the particles, and fill it with the filling material in the injection mold of the outer shape of the intake pipe. After arranging as a core, a synthetic resin material is injected into the mold, the outer periphery of the bent pipe is covered with the synthetic resin material, and a flange portion is integrally formed at one end portion. Manufacturing method of resin intake pipe.
JP13084187A 1987-05-27 1987-05-27 Manufacturing method of synthetic resin intake pipe for engine Expired - Fee Related JPH081158B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13084187A JPH081158B2 (en) 1987-05-27 1987-05-27 Manufacturing method of synthetic resin intake pipe for engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13084187A JPH081158B2 (en) 1987-05-27 1987-05-27 Manufacturing method of synthetic resin intake pipe for engine

Publications (2)

Publication Number Publication Date
JPS63295853A JPS63295853A (en) 1988-12-02
JPH081158B2 true JPH081158B2 (en) 1996-01-10

Family

ID=15043953

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13084187A Expired - Fee Related JPH081158B2 (en) 1987-05-27 1987-05-27 Manufacturing method of synthetic resin intake pipe for engine

Country Status (1)

Country Link
JP (1) JPH081158B2 (en)

Also Published As

Publication number Publication date
JPS63295853A (en) 1988-12-02

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