JPH04316784A - Manufacture of branch hose - Google Patents

Manufacture of branch hose

Info

Publication number
JPH04316784A
JPH04316784A JP3080351A JP8035191A JPH04316784A JP H04316784 A JPH04316784 A JP H04316784A JP 3080351 A JP3080351 A JP 3080351A JP 8035191 A JP8035191 A JP 8035191A JP H04316784 A JPH04316784 A JP H04316784A
Authority
JP
Japan
Prior art keywords
branch
hose
pipe
gate
groove
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
Application number
JP3080351A
Other languages
Japanese (ja)
Inventor
Kenichi Mitsui
研一 三井
Yoko Ushida
洋子 牛田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei Co Ltd
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 Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Priority to JP3080351A priority Critical patent/JPH04316784A/en
Publication of JPH04316784A publication Critical patent/JPH04316784A/en
Pending legal-status Critical Current

Links

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  • Branch Pipes, Bends, And The Like (AREA)

Abstract

PURPOSE:To prevent centralization of an injection pressure during molding of a covering part by forming a groove, the volume of which is increased from a surface, positioned facing a gate for injection, toward the opposite surface, in the surface of a coupling pipe during manufacture of a branch hose where three hoses are interconnected through an Y-form jointing pipe. CONSTITUTION:A jointing pipe 1 formed of glass fiber-reinforced nylon through injection molding comprises a base part 10 with a thick section and branch pipes 11-13 protruded from a base part 10 in three directions. Each of the branch pipes 11-13 is provided on its outer surface with annular protrusion parts 14... for preventing the slip of a hose. A groove 15 gradually spread in a fan-form manner from an intermediate position a point P) between the branch pipes 11 and 12 toward the branch pipe 13 is formed in a base part 10. The jointing pipe 1 through which hoses 21-23 are connected to the branch pipes 11-13, respectively, is arranged in a mold 3 and a molding material is injected through a gate 30 to manufacture a branch hose. In this case, the molding material is caused to flow along the groove 15 and an injection pressure is prevented from centralization to the specified surface of an insert.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は、2方向以上に分岐した
複数の分岐パイプをもつ結合管と、それぞれの分岐パイ
プに挿通された複数のホースと、それぞれのホースの分
岐パイプに挿通された端部を外表面側から一体的に被覆
保持する被覆部とからなる分岐ホースの製造方法に関す
る。
[Industrial Application Field] The present invention relates to a joint pipe having a plurality of branch pipes branching in two or more directions, a plurality of hoses inserted into each of the branch pipes, and a plurality of hoses inserted into the branch pipes of each hose. The present invention relates to a method of manufacturing a branch hose including a covering portion that integrally covers and holds the end portion from the outer surface side.

【0002】0002

【従来の技術】分岐ホースとして、例えば特開昭62−
233591号または特開昭62−233592号など
の公報に開示されたものが知られている。この分岐ホー
スは図5に示すように、3方向に分岐する分岐パイプ1
01、102、103をもつ結合管100と、それぞれ
の分岐パイプに挿通されたホース201、202、20
3と、それぞれのホースの結合管100との結合部分を
被覆する樹脂製被覆部300とから構成されている。
[Prior Art] As a branch hose, for example,
Those disclosed in publications such as No. 233591 and Japanese Unexamined Patent Publication No. 62-233592 are known. As shown in Fig. 5, this branch hose has a branch pipe 1 that branches in three directions.
01, 102, and 103, and hoses 201, 202, and 20 inserted into the respective branch pipes.
3, and a resin covering part 300 that covers the joint portion of each hose with the joint pipe 100.

【0003】この分岐ホースを形成するには、結合管1
00のそれぞれの分岐パイプ101〜103をホース2
01〜203にそれぞれ挿入する。その後図1に示すよ
うな金型3を用い、ホースと結合管100との結合部分
をシールリング4を介して成形型3内に配置する。そし
てゲート30からキャビティ31内に成形材料を射出し
、射出成形により樹脂製あるいはゴム製被覆部300を
形成する。このとき被覆部300は成形時に収縮して固
化し、ホースは被覆部300と結合管100との間で強
く挟持され、高いシール力が発生する。
[0003] To form this branch hose, a connecting pipe 1
00, each branch pipe 101 to 103 is connected to hose 2
Insert each from 01 to 203. Thereafter, using a mold 3 as shown in FIG. 1, the joint portion between the hose and the joint pipe 100 is placed in the mold 3 via the seal ring 4. Then, a molding material is injected into the cavity 31 from the gate 30, and a resin or rubber covering portion 300 is formed by injection molding. At this time, the covering part 300 contracts and solidifies during molding, and the hose is strongly held between the covering part 300 and the coupling tube 100, generating a high sealing force.

【0004】0004

【発明が解決しようとする課題】結合管100表面には
、図5に斜視図で示すようにホースの端面と当接して挿
入の位置決めを行う厚肉部104が形成されている。 そしてゲート30は通常二つの分岐パイプ101、10
2の股部分の厚肉部104に対向するように設けられる
。しかしながらこのような製造方法によると、ゲート3
0から射出された成形材料の射出圧が集中することによ
り、結合管100がホースとともにゲート30をもつ型
面側から反対方向へ押されて変位する場合があった。 このようになるとゲート30をもつ型面側のキャビティ
が拡がりその部分に優先的に成形材料が流れるため、被
覆部300の肉厚が不均一となったり、シールリング4
のシール力が変化してバリが発生したりする不具合があ
った。
As shown in a perspective view in FIG. 5, a thick walled portion 104 is formed on the surface of the coupling tube 100. The thick portion 104 contacts the end surface of the hose to determine the insertion position. The gate 30 usually has two branch pipes 101 and 10.
It is provided so as to face the thick portion 104 of the crotch portion of No. 2. However, according to this manufacturing method, the gate 3
Due to the concentrated injection pressure of the molding material injected from 0, the joint tube 100 was sometimes pushed and displaced together with the hose in the opposite direction from the side of the mold surface having the gate 30. If this happens, the cavity on the side of the mold surface with the gate 30 will expand and the molding material will flow preferentially into that area, which may cause the wall thickness of the covering part 300 to become uneven and the seal ring 4 to
There was a problem with the sealing force changing and causing burrs.

【0005】本発明はこのような事情に鑑みてなされた
ものであり、被覆部成形時の射出圧の集中による結合管
及びホースの変位を防止することを目的とする。
The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent displacement of the coupling pipe and hose due to concentration of injection pressure during molding of the covering portion.

【0006】[0006]

【課題を解決するための手段】上記課題を解決する本発
明の分岐ホースの製造方法は、2方向以上に分岐した複
数の分岐パイプをもつ結合管のそれぞれの分岐パイプに
ホースを挿通し、ホースが挿通された結合管を成形型内
に配置した後二つの分岐パイプの中間で結合管の分岐部
に対応する位置に設けられたゲートから成形材料を注入
してそれぞれのホースの分岐パイプに挿通された端部を
外表面側から一体的に被覆保持する被覆部を形成する分
岐ホースの製造方法において、分岐パイプに挿通された
複数のホースの端面どうしの間の結合管表面には、ゲー
トに対向する表面からその反対側の表面に向かって容積
が拡大する溝が形成され、被覆部の成形時に成形材料が
溝を通じてゲートに対向する表面の反対側へ優先的に流
れるようにしたことを特徴とする。
[Means for Solving the Problems] A method for manufacturing a branch hose of the present invention that solves the above problems includes inserting a hose into each branch pipe of a joint pipe having a plurality of branch pipes branching in two or more directions, and After placing the joint pipe inserted into the mold, molding material is injected through a gate located between the two branch pipes at a position corresponding to the branch part of the joint pipe, and the material is inserted into the branch pipe of each hose. In a method for manufacturing a branch hose that forms a coating that integrally covers and holds the ends of a plurality of hoses inserted into the branch pipe, a gate is formed on the joint pipe surface between the end faces of a plurality of hoses inserted into the branch pipe. A groove is formed whose volume expands from the facing surface toward the opposite surface, so that when molding the covering part, the molding material flows preferentially through the groove to the opposite side of the surface facing the gate. shall be.

【0007】結合管は複数の分岐パイプをもち、それぞ
れの分岐パイプの延びる方向は異なっている。分岐パイ
プの数は2個以上であれば特に制限されない。また結合
管の材質としては、金属、樹脂、セラミックスなどから
選択できる。ホースは分岐パイプと同数本用いられ、そ
れぞれ分岐パイプに挿通されて結合管と結合される。こ
のホースは、用途に応じて種々の材質のホースを用いる
ことができる。
[0007] The coupling pipe has a plurality of branch pipes, and the branch pipes extend in different directions. The number of branch pipes is not particularly limited as long as it is two or more. Further, the material of the coupling tube can be selected from metal, resin, ceramics, etc. The same number of hoses as the branch pipes are used, and each hose is inserted into the branch pipe and connected to the connecting pipe. This hose can be made of various materials depending on the purpose.

【0008】本発明の最大の特徴は、分岐パイプに挿通
された複数のホースの端面どうしの間の結合管表面には
、ゲートに対向する表面からその反対側の表面に向かっ
て容積が拡大する溝が形成されたところにある。この溝
は、例えばゲートに対向する表面からその反対側の表面
に向かうにつれて型面との間隔が大きくなるように、す
なわち徐々に深くなるように構成してもよいし、徐々に
幅が広くなるように構成することもできる。この両方を
併せもつように構成してもよい。このように構成するこ
とにより、被覆部の成形時に成形材料が溝を通じてゲー
トに対向する表面の反対側へ優先的に流れる。
The most important feature of the present invention is that the surface of the connecting pipe between the end faces of a plurality of hoses inserted into the branch pipe expands in volume from the surface facing the gate to the surface on the opposite side. This is where the groove is formed. This groove may be configured such that, for example, the distance from the mold surface increases from the surface facing the gate to the opposite surface, that is, it gradually becomes deeper, or the groove gradually becomes wider. It can also be configured as follows. It may be configured to have both of these. With this configuration, when molding the covering portion, the molding material flows preferentially through the groove to the opposite side of the surface facing the gate.

【0009】[0009]

【発明の作用及び効果】すなわち本発明の分岐ホースの
製造方法によれば、被覆部の形成時にゲートから注入さ
れた成形材料はまずゲートに対向する結合管表面に当接
し、次いで流動抵抗の小さい溝内を流れて結合管の反対
側へ廻る。その後それぞれの分岐パイプに挿通されたホ
ースの表面に流れる。したがって成形型内に配置された
結合管及びホースには、ほぼ全方向から均一な射出圧が
作用するようになり、型内での変位が防止される。
Effects and Effects of the Invention That is, according to the method for manufacturing a branch hose of the present invention, the molding material injected from the gate when forming the covering part first contacts the surface of the joint pipe facing the gate, and then the molding material with low flow resistance. It flows in the groove and turns to the opposite side of the coupling pipe. It then flows onto the surface of the hose inserted into each branch pipe. Therefore, uniform injection pressure is applied to the coupling tube and hose placed in the mold from substantially all directions, and displacement within the mold is prevented.

【0010】したがって本発明の製造方法によれば、肉
厚が均一な被覆部を安定して形成することができる。ま
たバリの発生も防止され外観品質の優れた分岐ホースを
製造することができる。
Therefore, according to the manufacturing method of the present invention, it is possible to stably form a coating portion with a uniform wall thickness. Moreover, the occurrence of burrs is also prevented, and a branch hose with excellent appearance quality can be manufactured.

【0011】[0011]

【実施例】以下、実施例により具体的に説明する。まず
ガラス繊維強化ナイロンより射出成形にて結合管1を形
成する。この結合管1は図2に示すように、厚肉の基部
10と、基部10から三方へ突出する分岐パイプ11、
12、13とから構成されている。なお分岐パイプ11
、12、13のそれぞれの中心軸は同一平面内にある。 そして分岐パイプ11、12、13のそれぞれの外周表
面には、ホースの抜け止め用のリング状突条部14が複
数個同軸的に形成されている。また基部10には、分岐
パイプ11と分岐パイプ12の中間位置(P点)から分
岐パイプ13に向かうにつれて扇状に拡がり、かつ深さ
も深くなる溝15が形成されている。
[Examples] Hereinafter, the present invention will be explained in detail using examples. First, the coupling tube 1 is formed by injection molding from glass fiber reinforced nylon. As shown in FIG. 2, this joint pipe 1 includes a thick-walled base 10, a branch pipe 11 protruding from the base 10 in three directions,
It is composed of 12 and 13. In addition, branch pipe 11
, 12, and 13 are in the same plane. A plurality of ring-shaped protrusions 14 for preventing the hose from coming off are coaxially formed on the outer peripheral surface of each of the branch pipes 11, 12, and 13. Further, a groove 15 is formed in the base 10, and the groove 15 widens in a fan shape and becomes deeper as it goes from the intermediate position (point P) between the branch pipe 11 and the branch pipe 12 toward the branch pipe 13.

【0012】ホース21、22、23はそれぞれゴム製
であり、内部に補強糸層を有している。これらのホース
21、22、23は、それぞれ分岐パイプ11、12、
13に基部10に当接するまで挿入される。次にホース
21、22、23が挿入された分岐パイプ1(以下、イ
ンサートという)は、図1に示すように金型3内に3本
のシールリング4を介して配置される。このときゲート
30がインサートのP点と対向するように配置される。
Each of the hoses 21, 22, and 23 is made of rubber and has a reinforcing thread layer inside. These hoses 21, 22, 23 are branch pipes 11, 12, respectively.
13 until it abuts against the base 10. Next, the branch pipe 1 (hereinafter referred to as an insert) into which the hoses 21, 22, and 23 are inserted is placed in a mold 3 via three seal rings 4, as shown in FIG. At this time, the gate 30 is placed so as to face the point P of the insert.

【0013】そしてゲート30からキャビティ31に成
形材料(溶融ナイロン)が射出される。ここでゲート3
0から射出された成形材料は、まずP点に当接した後流
動抵抗の小さい溝15に沿って流れ、次いで分岐パイプ
11、12、13に沿ってそれぞれ流れる。したがって
射出圧がインサートの特定表面に集中することなく均一
となるので、インサートが金型3内で変位するのが防止
され、キャビティ31は所定の寸法が維持される。また
シールリング4は、金型3とインサートとの間を確実に
シールしている。
Then, molding material (molten nylon) is injected from the gate 30 into the cavity 31. here gate 3
The molding material injected from 0 first contacts point P and then flows along the groove 15 with low flow resistance, and then flows along the branch pipes 11, 12, and 13, respectively. Therefore, the injection pressure is not concentrated on a particular surface of the insert and is uniform, thereby preventing the insert from displacing within the mold 3 and maintaining the predetermined dimensions of the cavity 31. Moreover, the seal ring 4 reliably seals between the mold 3 and the insert.

【0014】キャビティ31に充填された成形材料が冷
却・固化後、金型3を開き被覆部で一体的に被覆・締結
された分岐ホースを取り出す。得られた分岐ホースでは
、被覆部は均一な肉厚を有し、バリの発生もみられなか
った。
After the molding material filled in the cavity 31 is cooled and solidified, the mold 3 is opened and the branch hose integrally covered and fastened with the covering portion is taken out. In the obtained branched hose, the coating portion had a uniform wall thickness, and no burrs were observed.

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

【図1】本発明の一実施例の製造方法における被覆部の
成形方法を説明する断面図である。
FIG. 1 is a sectional view illustrating a method of forming a covering portion in a manufacturing method according to an embodiment of the present invention.

【図2】本発明の一実施例に用いた結合管の正面図であ
る。
FIG. 2 is a front view of a coupling tube used in one embodiment of the present invention.

【図3】図2のA−A断面図である。FIG. 3 is a sectional view taken along line AA in FIG. 2;

【図4】図2のB方向から見た斜視図である。FIG. 4 is a perspective view seen from direction B in FIG. 2;

【図5】従来の分岐ホースの断面図である。FIG. 5 is a sectional view of a conventional branch hose.

【図6】従来の分岐ホースに用いられている結合管の、
図4相当の斜視図である。
[Fig. 6] A connecting pipe used in a conventional branch hose.
It is a perspective view equivalent to FIG. 4.

【符号の説明】[Explanation of symbols]

1:結合管    3:金型    4:シールリング
10:基部        11、12、13:分岐パ
イプ      15:溝 21、22、23:ホース      30:ゲート 
         31:キャビティ
1: Joint pipe 3: Mold 4: Seal ring 10: Base 11, 12, 13: Branch pipe 15: Groove 21, 22, 23: Hose 30: Gate
31: Cavity

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  2方向以上に分岐した複数の分岐パイ
プをもつ結合管のそれぞれの該分岐パイプにホースを挿
通し、該ホースが挿通された該結合管を成形型内に配置
した後二つの該分岐パイプの中間で該結合管の分岐部に
対応する位置に設けられたゲートから成形材料を注入し
てそれぞれの該ホースの該分岐パイプに挿通された端部
を外表面側から一体的に被覆保持する被覆部を形成する
分岐ホースの製造方法において、前記分岐パイプに挿通
された複数の前記ホースの端面どうしの間の前記結合管
表面には、前記ゲートに対向する表面からその反対側の
表面に向かって容積が拡大する溝が形成され、前記被覆
部の成形時に成形材料が該溝を通じて該ゲートに対向す
る表面の反対側へ優先的に流れるようにしたことを特徴
とする分岐ホースの製造方法。
Claim 1: A hose is inserted into each of the branch pipes of a joint pipe having a plurality of branch pipes branched in two or more directions, and the joint pipe into which the hose is inserted is placed in a mold. A molding material is injected from a gate provided in the middle of the branch pipe at a position corresponding to the branch part of the joint pipe, and the end of each hose inserted into the branch pipe is integrally formed from the outer surface side. In the method for manufacturing a branch hose that forms a covering portion that holds the covering, the joint pipe surface between the end faces of the plurality of hoses inserted into the branch pipe has a surface facing from the gate to the opposite side thereof. A branch hose characterized in that a groove is formed whose volume increases toward the surface, and when the covering portion is molded, the molding material flows preferentially through the groove to the opposite side of the surface facing the gate. Production method.
JP3080351A 1991-04-15 1991-04-15 Manufacture of branch hose Pending JPH04316784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3080351A JPH04316784A (en) 1991-04-15 1991-04-15 Manufacture of branch hose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3080351A JPH04316784A (en) 1991-04-15 1991-04-15 Manufacture of branch hose

Publications (1)

Publication Number Publication Date
JPH04316784A true JPH04316784A (en) 1992-11-09

Family

ID=13715834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3080351A Pending JPH04316784A (en) 1991-04-15 1991-04-15 Manufacture of branch hose

Country Status (1)

Country Link
JP (1) JPH04316784A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103267197A (en) * 2013-05-31 2013-08-28 吉铨精密机械(苏州)有限公司 T-branch pipe of thread casting belt head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103267197A (en) * 2013-05-31 2013-08-28 吉铨精密机械(苏州)有限公司 T-branch pipe of thread casting belt head

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