JPH07125094A - Manufacture of irregular diameter hose - Google Patents

Manufacture of irregular diameter hose

Info

Publication number
JPH07125094A
JPH07125094A JP27241093A JP27241093A JPH07125094A JP H07125094 A JPH07125094 A JP H07125094A JP 27241093 A JP27241093 A JP 27241093A JP 27241093 A JP27241093 A JP 27241093A JP H07125094 A JPH07125094 A JP H07125094A
Authority
JP
Japan
Prior art keywords
diameter
unvulcanized rubber
rubber hose
mandrel
hose
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
JP27241093A
Other languages
Japanese (ja)
Inventor
Taizo Ogawa
泰三 小川
Hisatsugu Goto
久嗣 後藤
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 JP27241093A priority Critical patent/JPH07125094A/en
Publication of JPH07125094A publication Critical patent/JPH07125094A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To insert an irregular diameter mandrel easily into an unvulcanized rubber hose by inserting an irregular diameter mandrel with a tapered face to be expanded in its diameter gradually starting from the end only on a site where the diameter of an unvulcanized rubber hose is expanded and vulcanizing other parts while shape is retained locally from the outer periphery. CONSTITUTION:An unvulcanized rubber hose with an inner diameter D1 of a small diameter section P1 is used, and an irregular diameter mandrel (m) having a tapered face m3 expanded in its diameter gradually from its end and a large diameter circumferential face m2 of an outer diameter d2 equal to an inner diameter D2 of a large diameter section P2 is also used. Then, a large diameter circumferential face m2 as an insert shaft is pressed to insert the irregular diameter mandrel (m) into only a site of the unvulcanized rubber hose to be expanded in its diameter. Then, jigs are applied on the outer periphery on the end face of the taper m3 and on the outer periphery around the large diameter circumferential face m2 to retain the shape, and the unvulcanized rubber hose is vulcanized. Thus an irregular diameter hose P is manufactured.

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、小径部と大径部とをも
つ異径ホースの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a different diameter hose having a small diameter portion and a large diameter portion.

【０００２】[0002]

【従来の技術】従来、図６に示すように、製品として、
所望の内径Ｄ1 の小径部Ｐ1 と所望の内径Ｄ2 の大径部
Ｐ2 とをもつ異径ホースＰを製造する場合、次のような
方法が一般になされていた。すなわち、まず、図７に示
すように、小径部Ｐ1 の内径Ｄ1 をもつ未加硫ゴムホー
スＷを用意する。また、図８に示すように、小径部Ｐ1
の内径Ｄ1 とほぼ等しい外径ｄ1 の小径円周面ｍ1 と、
この小径円周面ｍ1 の後方にテーパ面ｍ3 により徐々に
拡径されて連続し、大径部Ｐ2 の内径Ｄ2 と等しい外径
ｄ2 の大径円周面ｍ2 とをもつ異径マンドレルｍを用意
する。そして、この異径マンドレルｍを未加硫ゴムホー
スＷに挿入する。この状態で未加硫ゴムホースＷを加硫
し、拡径により大径部Ｐ2 を製造する。2. Description of the Related Art Conventionally, as shown in FIG.
When producing a different diameter hose P having a small diameter portion P 1 of the desired inner diameter D 1 and the large diameter portion P 2 of the desired inner diameter D 2, the following method has been made in general. That is, first, as shown in FIG. 7, an unvulcanized rubber hose W having an inner diameter D 1 of the small diameter portion P 1 is prepared. Further, as shown in FIG. 8, the small diameter portion P 1
A small diameter circumferential surface m 1 having an outer diameter d 1 substantially equal to the inner diameter D 1 of
Behind this small-diameter circumferential surface m 1 is gradually expanded by a tapered surface m 3 and is continuous, and has a large-diameter circumferential surface m 2 having an outer diameter d 2 equal to the inner diameter D 2 of the large-diameter portion P 2. Prepare a mandrel m of different diameter. Then, the different diameter mandrel m is inserted into the unvulcanized rubber hose W. In this state, the unvulcanized rubber hose W is vulcanized, and the large diameter portion P 2 is manufactured by expanding the diameter.

【０００３】[0003]

【発明が解決しようとする課題】しかし、上記方法で
は、内径Ｄ1 と外径ｄ1 とがほぼ等しいけれども、その
小径円周面ｍ1 を未加硫ゴムホースＷに挿入することは
かなり困難である。しかも、未加硫ゴムホースＷが屈曲
されている場合には、屈曲した未加硫ゴムホースＷを小
径円周面ｍ1 が直線化しなければならず、テーパ面ｍ3
及び大径円周面ｍ2を所定位置まで移動させるときに多
大な抵抗が作用し、作業性を損なうこととなっていた。However, in the above method, although the inner diameter D 1 and the outer diameter d 1 are substantially equal, it is quite difficult to insert the small-diameter circumferential surface m 1 into the unvulcanized rubber hose W. is there. Moreover, when the unvulcanized rubber hose W is bent, the bent unvulcanized rubber hose W must be linearized on the small-diameter circumferential surface m 1 and the tapered surface m 3
In addition, when the large-diameter circumferential surface m 2 is moved to a predetermined position, a large amount of resistance acts, impairing workability.

【０００４】本発明は、上記従来の不具合に鑑みてなさ
れたものであって、異径マンドレルを未加硫ゴムホース
に比較的容易に挿入することのできる異径ホースの製造
方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-mentioned conventional problems, and provides a method of manufacturing a different diameter hose in which a different diameter mandrel can be inserted into an unvulcanized rubber hose relatively easily. To aim.

【０００５】[0005]

【課題を解決するための手段】本発明の異径ホースの製
造方法は、円筒状の未加硫ゴムホースの拡径すべき部位
のみに、先端から徐々に拡径されるテーパ面をもつ異径
マンドレルを挿入し、他の部位は少なくとも局部的に外
周から形状保持しながら該未加硫ゴムホースを加硫する
ことにより異径ホースを製造することを特徴とする。SUMMARY OF THE INVENTION A method of manufacturing a hose of different diameter according to the present invention is a hose of different diameter having a tapered surface that gradually expands from the tip only in the portion of the cylindrical unvulcanized rubber hose to be expanded. A different diameter hose is manufactured by inserting a mandrel and vulcanizing the unvulcanized rubber hose while at least locally retaining the shape of the other part from the outer periphery.

【０００６】[0006]

【作用】本発明の異径ホースの製造方法により、製品と
して、所望の内径の小径部と所望の内径の大径部とをも
つ異径ホースを製造する場合、次のように行う。すなわ
ち、まず、所定の内径をもつ未加硫ゴムホースを用意す
る。また、先端から徐々に拡径されるテーパ面をもつ異
径マンドレルを用意する。そして、未加硫ゴムホースの
拡径すべき部位のみにこの異径マンドレルを挿入する。When a different diameter hose having a small diameter portion having a desired inner diameter and a large diameter portion having a desired inner diameter is manufactured as a product by the method for manufacturing a different diameter hose of the present invention, the following steps are performed. That is, first, an unvulcanized rubber hose having a predetermined inner diameter is prepared. Also, prepare a mandrel with a different diameter that has a tapered surface that gradually expands from the tip. Then, this mandrel having a different diameter is inserted only into the portion of the unvulcanized rubber hose to be expanded in diameter.

【０００７】このとき、異径マンドレルは従来のような
小径円周面を有さないため、未加硫ゴムホースへの挿入
が比較的容易である。また、例え未加硫ゴムホースが屈
曲されていたとしても、屈曲した未加硫ゴムホースを直
線化することを異径マンドレルは行わず、テーパ面を所
定部位まで移動させるときに従来よりも低減された抵抗
の下で挿入を完了することができる。At this time, the different diameter mandrel does not have a small diameter circumferential surface as in the prior art, so that it can be inserted into the unvulcanized rubber hose relatively easily. Further, even if the unvulcanized rubber hose is bent, straightening of the bent unvulcanized rubber hose is not performed with a mandrel of different diameter, and when moving the tapered surface to a predetermined portion, it is reduced compared to the conventional case. Insertion can be completed under resistance.

【０００８】次いで、他の部位は少なくとも局部的に外
周から形状保持し、この状態で未加硫ゴムホースを加硫
する。[0008] Next, the other parts are held at least locally in shape from the outer periphery, and in this state, the unvulcanized rubber hose is vulcanized.

【０００９】[0009]

【実施例】以下、本発明を具体化した実施例１〜３を図
面を参照しつつ説明する。 （実施例１）この製造方法により、図６に示すように、
製品として、所望の内径Ｄ1 の小径部Ｐ1 と所望の内径
Ｄ2 の大径部Ｐ2 とをもつ異径ホースを製造する場合、
次のように行う。Embodiments 1 to 3 embodying the present invention will be described below with reference to the drawings. (Example 1) By this manufacturing method, as shown in FIG.
As the product, when manufacturing different diameter hose with a small diameter portion P 1 of the desired inner diameter D 1 and the large diameter portion P 2 of the desired inner diameter D 2,
Do the following:

【００１０】すなわち、まず、図７に示すように、小径
部Ｐ1 の内径Ｄ1 をもつ未加硫ゴムホースＷを用意す
る。また、図１に示すように、先端から徐々に拡径され
るテーパ面ｍ3 と、このテーパ面ｍ3 により連続し、大
径部Ｐ2 の内径Ｄ2 と等しい外径ｄ2 の大径円周面ｍ2
とをもつ異径マンドレルｍを用意する。そして、図２に
示すように、挿入軸としての大径円周面ｍ2 を押圧する
ことにより、未加硫ゴムホースＷの拡径すべき部位のみ
にこの異径マンドレルｍを挿入する。That is, first, as shown in FIG. 7, an unvulcanized rubber hose W having an inner diameter D 1 of a small diameter portion P 1 is prepared. Further, as shown in FIG. 1, a tapered surface m 3 which is gradually enlarged from the distal end, a continuous, large diameter outer diameter d 2 equal to the inner diameter D 2 of the large-diameter portion P 2 by the tapered surface m 3 Circumferential surface m 2
Prepare a mandrel m of different diameter with. Then, as shown in FIG. 2, by pressing the large-diameter circumferential surface m 2 as the insertion shaft, the different-diameter mandrel m is inserted only into the portion of the unvulcanized rubber hose W to be expanded in diameter.

【００１１】このとき、異径マンドレルｍは従来のよう
な小径円周面ｍ1 （図８参照）を有さないため、未加硫
ゴムホースＷへの挿入が比較的容易である。また、例え
未加硫ゴムホースＷが屈曲されていたとしても、屈曲し
た未加硫ゴムホースＷを直線化することを異径マンドレ
ルｍは行わず、テーパ面ｍ3 を所定部位まで移動させる
ときに従来よりも低減された抵抗の下で挿入を完了する
ことができる。At this time, since the different diameter mandrel m does not have the small diameter circumferential surface m 1 (see FIG. 8) as in the prior art, it is relatively easy to insert it into the unvulcanized rubber hose W. Further, even if the unvulcanized rubber hose W is bent, the different diameter mandrel m is not used to straighten the bent unvulcanized rubber hose W, and the conventional method is used when moving the tapered surface m 3 to a predetermined portion. Insertion can be completed under reduced resistance.

【００１２】次いで、テーパ面ｍ3 よりも先端側の外周
及び大径円周面ｍ2 周りの外周に治具１、２を被覆して
形状保持し、この状態で未加硫ゴムホースＷを加硫す
る。こうして図６に示す異径ホースＰが得られる。した
がって、この製造方法では、異径マンドレルｍを未加硫
ゴムホースＷに比較的容易に挿入することができるの
で、優れた作業性を発揮することができる。 （実施例２）この製造方法では、図３に示すように、先
端から徐々に拡径されるテーパ面ｍ 3 と、このテーパ面
ｍ3 とは連続せず、小径部Ｐ1 の内径Ｄ1 より小さい外
径ｄ 4 の挿入軸ｍ4 とをもつ異径マンドレルｍを採用し
ている。他の構成は実施例１と同一である。そして、図
４に示すように、挿入軸ｍ4 を押圧することにより、未
加硫ゴムホースＷの拡径すべき部位のみにこの異径マン
ドレルｍを挿入する。Next, the tapered surface m3Outer circumference than tip
And large diameter circumferential surface m2Cover the outer circumference with jigs 1 and 2
Hold the shape and vulcanize the unvulcanized rubber hose W in this state
It In this way, the different diameter hose P shown in FIG. 6 is obtained. did
Therefore, in this manufacturing method, the mandrel m of different diameter is not vulcanized.
It can be inserted into the rubber hose W with relative ease.
Therefore, excellent workability can be exhibited. (Example 2) In this manufacturing method, as shown in FIG.
Tapered surface m that gradually expands from the end 3And this tapered surface
m3Is not continuous with the small diameter part P1Inner diameter D1Smaller than
Diameter d FourInsertion axis mFourAdopting different diameter mandrel m with
ing. Other configurations are the same as those in the first embodiment. And the figure
As shown in 4, the insertion axis mFourBy pressing
This different diameter man
Insert the drel m.

【００１３】このときにおいても、実施例１と同一の作
用及び効果を奏することができる。また、この製造方法
では、実施例１の異径マンドレルｍのように大径円周面
ｍ2がないため、大径円周面ｍ2 を拡径すべき部位まで
移動させる際の抵抗が低減され、異径マンドレルｍの挿
入をより一層容易に完了することができる。 （実施例３）この製造方法では、図５に示すように、テ
ーパ面ｍ3 に面取りが施され、このテーパ面ｍ3 に緩や
かに連続する大径円周面ｍ2 を一部だけもつ異径マンド
レルｍを採用している。他の構成は実施例２と同一であ
る。Even at this time, the same operation and effect as those of the first embodiment can be obtained. Further, in this manufacturing method, since there is no large-diameter circumferential surface m 2 unlike the different-diameter mandrel m of the first embodiment, the resistance when moving the large-diameter circumferential surface m 2 to the site to be expanded is reduced. Thus, the insertion of the mandrel m of different diameter can be completed more easily. (Embodiment 3) In this manufacturing method, as shown in FIG. 5, the tapered surface m 3 is chamfered, and only a part of the large-diameter circumferential surface m 2 that is gently continuous with the tapered surface m 3 is provided. Diameter mandrel m is used. Other configurations are the same as those in the second embodiment.

【００１４】この製造方法においても、実施例１と同一
の作用及び効果を奏することができる。また、この製造
方法では、実施例２の異径マンドレルｍのようにテーパ
面ｍ 3 にピン角がないため、テーパ面ｍ3 を拡径すべき
部位まで移動させる際の抵抗が低減され、異径マンドレ
ルｍの挿入をより一層容易に完了することができる。さ
らに、この製造方法では、大径円周面ｍ2 の一部だけが
テーパ面ｍ3 に緩やかに連続されているため、異径マン
ドレルｍの挿入を未だ容易に行うことができるととも
に、加硫時の変形を大径円周面ｍ2 の一部により多少な
りとも防止することができる。This manufacturing method is also the same as in the first embodiment.
The action and effect of can be exhibited. Also this production
In the method, as in the case of the different diameter mandrel m of the second embodiment,
Face m 3Since there is no pin angle on the taper surface m3Should be expanded
Resistance when moving to the site is reduced, and mandrel with different diameter
The insertion of the rule m can be completed more easily. It
Moreover, in this manufacturing method, the large-diameter circumferential surface m2Only part of
Tapered surface m3Since it is gently continuous with
It can be said that the insertion of the drel m is still easy.
In addition, the deformation at the time of vulcanization is large.2Depending on a part of
It can be prevented at all.

【００１５】[0015]

【発明の効果】以上詳述したように、本発明の異径ホー
スの製造方法は、特許請求の範囲記載の構成を採用して
いるため、異径マンドレルを未加硫ゴムホースに比較的
容易に挿入することができる。したがって、異径マンド
レルを未加硫ゴムホースに挿入する際の抵抗が少なくな
るので、優れた作業性を発揮することができる。As described above in detail, since the method for producing a different diameter hose of the present invention adopts the constitution described in the claims, it is possible to easily change the different diameter mandrel to the unvulcanized rubber hose. Can be inserted. Therefore, resistance when inserting the mandrel of different diameter into the unvulcanized rubber hose is reduced, so that excellent workability can be exhibited.

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

【図１】実施例１の製造方法で採用した異径マンドレル
の側面図である。FIG. 1 is a side view of a mandrel having a different diameter used in a manufacturing method according to a first embodiment.

【図２】実施例１の製造方法に係り、異径マンドレルを
挿入した未加硫ゴムホースの断面図である。FIG. 2 is a cross-sectional view of an unvulcanized rubber hose with a mandrel of different diameter inserted therein according to the manufacturing method of Example 1.

【図３】実施例２の製造方法で採用した異径マンドレル
の側面図である。FIG. 3 is a side view of the different diameter mandrel used in the manufacturing method of the second embodiment.

【図４】実施例２の製造方法に係り、異径マンドレルを
挿入した未加硫ゴムホースの断面図である。FIG. 4 is a cross-sectional view of an unvulcanized rubber hose with a mandrel of different diameter inserted therein according to the manufacturing method of Example 2.

【図５】実施例３の製造方法で採用した異径マンドレル
の側面図である。FIG. 5 is a side view of the different diameter mandrel used in the manufacturing method of the third embodiment.

【図６】異径ホースの断面図である。FIG. 6 is a cross-sectional view of a different diameter hose.

【図７】未加硫ゴムホースの断面図である。FIG. 7 is a sectional view of an unvulcanized rubber hose.

【図８】従来の製造方法で採用する異径マンドレルの側
面図である。FIG. 8 is a side view of a different diameter mandrel used in a conventional manufacturing method.

【符号の説明】[Explanation of symbols]

Ｗ…未加硫ゴムホース ｍ…異径マンドレル ｍ
3 …テーパ面W ... Unvulcanized rubber hose m ... Different diameter mandrel m
3 … Tapered surface

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】円筒状の未加硫ゴムホースの拡径すべき部
位のみに、先端から徐々に拡径されるテーパ面をもつ異
径マンドレルを挿入し、他の部位は少なくとも局部的に
外周から形状保持しながら該未加硫ゴムホースを加硫す
ることにより異径ホースを製造することを特徴とする異
径ホースの製造方法。1. A mandrel of different diameter having a taper surface gradually expanding from the tip is inserted only into a region of a cylindrical unvulcanized rubber hose to be expanded in diameter, and other regions are at least locally from the outer periphery. A method for producing a different diameter hose, which comprises producing a different diameter hose by vulcanizing the unvulcanized rubber hose while maintaining its shape.
JP27241093A 1993-10-29 1993-10-29 Manufacture of irregular diameter hose Pending JPH07125094A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27241093A JPH07125094A (en) 1993-10-29 1993-10-29 Manufacture of irregular diameter hose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27241093A JPH07125094A (en) 1993-10-29 1993-10-29 Manufacture of irregular diameter hose

Publications (1)

Publication Number Publication Date
JPH07125094A true JPH07125094A (en) 1995-05-16

Family

ID=17513521

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27241093A Pending JPH07125094A (en) 1993-10-29 1993-10-29 Manufacture of irregular diameter hose

Country Status (1)

Country Link
JP (1) JPH07125094A (en)

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