JP2922251B2 - Branch hose manufacturing method - Google Patents
Branch hose manufacturing methodInfo
- Publication number
- JP2922251B2 JP2922251B2 JP2079528A JP7952890A JP2922251B2 JP 2922251 B2 JP2922251 B2 JP 2922251B2 JP 2079528 A JP2079528 A JP 2079528A JP 7952890 A JP7952890 A JP 7952890A JP 2922251 B2 JP2922251 B2 JP 2922251B2
- Authority
- JP
- Japan
- Prior art keywords
- hose
- branch
- connecting portion
- hose body
- vulcanized
- 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 - Lifetime
Links
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は３ウエイホースなどの分岐ホースを製造する
方法に関する。The present invention relates to a method of manufacturing a branch hose such as a three-way hose.
［従来の技術］ 従来の分岐ホースとして、第11図に断面図を示すよう
に、主ホース100と、主ホース100から分岐した副ホース
200と、主ホース100および副ホース200の分岐部を覆う
接合ゴム300とからなるものが知られている。[Prior Art] As a conventional branch hose, as shown in a cross-sectional view in FIG. 11, a main hose 100 and an auxiliary hose branched from the main hose 100
There is known one comprising a main hose 200 and a joint rubber 300 covering a branch portion of the main hose 100 and the sub hose 200.
この分岐ホースは、加硫状態の主ホース100に分岐穴
を穿設し、この分岐穴の径に略等しい外径をもつ加硫状
態の副ホース200を分岐穴の上方に位置させた状態で、
各ホースの孔内にマンドレルを挿入して型内に配置した
後、分岐部の外面から未加硫ゴムよりなる接合ゴム300
を注入して被覆成形し、その後加熱、加硫して一体的に
結合することにより製造される。In this branch hose, a vulcanized main hose 100 is provided with a branch hole, and a vulcanized sub-hose 200 having an outer diameter substantially equal to the diameter of the branch hole is positioned above the branch hole. ,
After inserting the mandrel into the hole of each hose and placing it in the mold, the joining rubber 300 made of unvulcanized rubber
And then molded by coating, and then heated and vulcanized to be integrally bonded.
［発明が解決しようとする課題］ しかしながら、上記従来の製造方法では、主ホース10
0の分岐穴と副ホース200との間に分岐部の外側から未加
硫ゴムが注入されるので、接合ゴム300の内側にバリが
生じる。また、主ホース100の分岐穴と副ホース200との
間に注入される接合ゴム300の注入圧力により、主ホー
ス100及び副ホース200は、それぞれ分岐部から相互に離
れる方向に応力が作用する。このため、主ホース100に
対する副ホース200の位置関係がずれたりして分岐ホー
スの品質が安定しない。[Problems to be Solved by the Invention] However, in the conventional manufacturing method, the main hose 10
Since unvulcanized rubber is injected from the outside of the branch portion between the 0 branch hole and the auxiliary hose 200, burrs are generated inside the joint rubber 300. Further, due to the injection pressure of the bonding rubber 300 injected between the branch hole of the main hose 100 and the sub hose 200, stress acts on the main hose 100 and the sub hose 200 in directions away from the branch portions. For this reason, the positional relationship of the sub hose 200 with respect to the main hose 100 is shifted, and the quality of the branch hose is not stabilized.
本発明は、上記実状に鑑みてなされたものであり、主
ホースと副ホースを連結する接合ゴムの内側に発生する
バリの問題点、及び分岐ホースの品質のバラ付きの問題
点を解決することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and solves a problem of burr generated inside a joint rubber connecting a main hose and a sub hose, and a problem of variation in quality of a branch hose. With the goal.
［課題を解決するための手段］ 本発明の分岐ホースの製造方法は、半加硫状態のゴム
よりなり少なくとも１個の分岐部と少なくとも３個の開
口端部とをもつ管状の連結部であって、縦断面で分割さ
れた２つの半割品からなる連結部を形成する連結部成形
工程と、半加硫又は加硫状態のゴムよりなる少なくとも
２本のホース本体を該連結部の各開口端部の連通を遮断
することなく該連結部の孔内に配置するホース本体連結
工程と、該連結部の外側を型で押えつつ該連結及び該ホ
ース本体を加硫して一体的に結合する加硫工程と、より
なることを特徴とする。[Means for Solving the Problems] The method for producing a branch hose of the present invention comprises a tubular connecting portion made of semi-vulcanized rubber and having at least one branch portion and at least three open ends. A connecting part forming step of forming a connecting part consisting of two half-pieces divided in a longitudinal section, and at least two hose bodies made of semi-vulcanized or vulcanized rubber, each opening of the connecting part. A hose body connecting step of disposing the hose body in the hole of the connecting portion without interrupting the communication of the end portion, and vulcanizing the connection and the hose body while pressing the outside of the connecting portion with a mold to integrally connect the hose body Vulcanizing step.
連結部成形工程は、半加硫状態のゴムよりなり少なく
とも１個の分岐部と少なくとも３個の開口端部をもつ管
状の連結部であって、縦断面で分割された２つの半割品
からなる連結部を形成する工程である。The connecting portion forming step is a tubular connecting portion made of rubber in a semi-vulcanized state and having at least one branch portion and at least three open ends. This is a step of forming a connecting portion.
ここで半加硫状態のゴムとは、加硫が進行途上で架橋
点がまだ残っている状態のゴムをいう。ホース本体との
接着性の観点からは加硫があまり進行していない状態の
方が好ましく、一方連結部の形状保持性の観点からは加
硫がある程度進行した状態の方が好ましいため、バラン
スのとれた半加硫条件を設定することが好ましい。Here, the semi-vulcanized rubber refers to a rubber in which vulcanization is in progress and a crosslinking point still remains. From the viewpoint of adhesion to the hose body, it is preferable that vulcanization has not progressed so much, while from the viewpoint of shape retention of the connecting portion, it is preferable that vulcanization has progressed to some extent. It is preferable to set the obtained semi-vulcanization conditions.
連結部の全体形状は、１個の分岐部と３個の開口端部
とをもつＴ字状、Ｙ字状としたり、又は２個の分岐部と
４個の開口端部とをもつ略＋字状とすることができる。The overall shape of the connecting portion may be a T-shape or a Y-shape having one branch portion and three opening ends, or a substantially + shape having two branch portions and four opening ends. It can be shaped like a letter.
この連結部は、射出成形、圧縮成形等により形成する
ことができる。なお連結部の材質としては天然ゴム（N
R）、スチレンブタジエンゴム（SBR）、ブタジエンゴム
（BR）、ブチルゴム（IIR）、ニトリルゴム（NBR）、エ
チレンプロピレンゴム（EPDM）、アクリルゴム（ACM）
など従来用いられている各種種類のゴムを用いることが
できる。This connecting portion can be formed by injection molding, compression molding, or the like. The material of the connecting part is natural rubber (N
R), styrene butadiene rubber (SBR), butadiene rubber (BR), butyl rubber (IIR), nitrile rubber (NBR), ethylene propylene rubber (EPDM), acrylic rubber (ACM)
For example, various types of conventionally used rubbers can be used.
ホース本体連結工程は、半加硫又は加硫状態のゴムよ
りなる少なくとも２本のホース本体を上記連結部の各開
口端部の連通を遮断することなく上記連結部の孔内に配
置する工程である。The hose body connecting step is a step of arranging at least two hose bodies made of semi-vulcanized or vulcanized rubber in the hole of the connecting part without interrupting the communication of each open end of the connecting part. is there.
ここで半加硫状態のゴムとは前記の状態をいい、また
加硫状態のゴムとは、目的の製品性能を得るまでに十分
に加硫された状態のゴムをいう。例えば、NBRであれ
ば、蒸気加硫の場合、6Kg/cm2（150℃）で30分間加硫し
た状態である。なお、ホース本体が曲管形状の場合は、
ホース本体連結工程の後に行われる加硫工程で形状が崩
れるのを防止するため、加硫状態とすることが好まし
い。Here, the semi-vulcanized rubber refers to the above-described state, and the vulcanized rubber refers to a rubber sufficiently vulcanized to obtain a desired product performance. For example, in the case of NBR, in the case of steam vulcanization, vulcanization is performed at 6 kg / cm 2 (150 ° C.) for 30 minutes. If the hose body is curved,
In order to prevent the shape from being collapsed in the vulcanization step performed after the hose body connecting step, it is preferable to set the vulcanized state.
上記連結部の全体形状がＴ字状の場合、各開口端部か
ら３本のホース本体の端部をそれぞれ進入させたり、又
は１つの分岐穴をもつホース本体と一端がこの分岐穴に
連通する他のホース本体とからなる２本のホース本体を
連結部の孔内にＴ字状に配置したりすることができる。
また、連結部の全体形状がＹ字状の場合、各開口端部か
ら３本のホース本体の端部をそれぞれ進入させたり、又
は１つの分岐穴をもちこの分岐穴を頂点として屈曲した
ホース本体と一端がこの分岐穴に連通する他のホース本
体とからなる２本のホース本体を連結部の孔内にＹ字状
に配置したりすることができる。さらに、連結部の全体
形状が略＋字状の場合、各開口端部から４本のホース本
体の端部をそれぞれ進入させたり、又は２つの分岐穴を
もつホース本体と一端がこの分岐穴に連通する他の２本
のホース本体からなる３本のホース本体を連結部の孔内
に略＋字状に配置したりすることができる。When the entire shape of the connecting portion is T-shaped, the ends of the three hose bodies are respectively inserted from the opening ends, or the hose body having one branch hole and one end communicate with the branch hole. Two hose bodies composed of another hose body can be arranged in a T-shape in the hole of the connecting portion.
In the case where the entire shape of the connecting portion is Y-shaped, the end of each of the three hose bodies is inserted from each opening end, or the hose body having one branch hole and bent with the branch hole as a vertex. And two hose bodies, one end of which is communicated with the branch hole, can be arranged in a Y-shape in the hole of the connecting portion. Further, when the overall shape of the connecting portion is substantially + -shaped, the ends of the four hose bodies are respectively inserted from the opening ends, or the hose body having two branch holes and one end are inserted into the branch holes. The three hose bodies composed of the other two hose bodies communicating with each other can be arranged in a substantially + shape in the hole of the connecting portion.
このホース本体は、押出成形により、又は押出成形後
分岐穴を穿設することより形成することができる。ホー
ス本体の材質としては、連結部と同様の各種ゴムを用い
ることができ、連結部と同一種類のゴムでもよいし異な
る種類のゴムでもよい。The hose body can be formed by extrusion or by forming a branch hole after extrusion. As the material of the hose body, various rubbers similar to those of the connecting portion can be used, and the same type of rubber as the connecting portion or a different type of rubber may be used.
なお、連結部とホース本体との接触面に接着剤を塗布
することもできる。Note that an adhesive may be applied to a contact surface between the connecting portion and the hose body.
加硫工程は、上記連結部及び上記ホース本体を加硫し
て一体的に結合する工程である。The vulcanizing step is a step of vulcanizing the connecting portion and the hose body and integrally connecting them.
この加硫工程は、蒸気加硫又はプレス加硫により行う
ことができる。This vulcanization step can be performed by steam vulcanization or press vulcanization.
上記蒸気加硫は、連結部及びホース本体を組立てた状
態で全体を蒸気缶内に入れ、蒸気圧により全体かつ連結
部を加圧しながら加硫させるものである。連結部を半割
品としているため、連結部同士を離脱させないように外
側を型で押させた状態で加硫する必要がある。In the steam vulcanization, the entirety is put in a steam can in a state where the connecting portion and the hose body are assembled, and vulcanization is performed while pressurizing the entirety and the connecting portion by steam pressure. Since the connecting part is a half-split product, it is necessary to vulcanize while pressing the outside with a mold so that the connecting parts do not come off.
上記プレス加硫は、連結部及びホース本体の孔内にマ
ンドレルを挿入した状態で外側から型によりプレス加工
するものである。この場合、連結部には外側からマンド
レル方向に圧力が作用するので、連結部が縦断面で分割
された半割品であっても、連結部には縮径する方向に応
力が作用し、半割品同士が一体的に結合し、かつ、ホー
ス本体との結合力が強くなる。In the press vulcanization, a mandrel is inserted into a hole of a connecting portion and a hose body, and is pressed by a mold from the outside. In this case, since pressure acts on the connecting portion from the outside in the mandrel direction, even if the connecting portion is a half-piece product divided in a longitudinal section, stress acts on the connecting portion in the direction of reducing the diameter, and the The split parts are integrally connected, and the bonding strength with the hose body is increased.
［発明の作用及び効果］ 本発明の製造方法は、連結部成形工程で半加硫のゴム
よりなる連結部を縦断面で分割した２つの半割品に予め
形成し、ホース本体連結工程で連結部の孔内にホース本
体を配置した後、連結部及びホース本体を加硫して一体
的に結合するものであるから、ホース本体を型内の所定
位置に配置した後、未加硫ゴムを注入して連結部を形成
する従来の製造方法のように、連結部の内側にバリが発
生したり、ホース本体が注入圧力により位置ずれしたり
することもなく、品質の良い分岐ホースを容易に製造す
ることができる。[Operation and Effect of the Invention] In the manufacturing method of the present invention, a connecting portion made of semi-vulcanized rubber is formed in advance into two half-pieces divided in a longitudinal section in a connecting portion forming step, and connected in a hose body connecting step. After the hose body is placed in the hole of the part, the connecting part and the hose body are vulcanized and joined together, so after placing the hose body at a predetermined position in the mold, the unvulcanized rubber is removed. As in the conventional manufacturing method in which a joint is formed by injection, a high-quality branch hose can be easily manufactured without generating burrs inside the joint or displacing the hose body due to injection pressure. Can be manufactured.
［実施例］ 以下、実施例により具体的に説明す。[Examples] Hereinafter, specific examples will be described.
（連結部成形工程） 第１図に示すように、NBRゴムを用い射出成形により
全体形状がＴ字状で半割状の連結部１を２個形成した。
この連結部１は、１個の分岐部11と３個の開口端部12と
をもち、各開口端部12側にはホース本体が挿入されるホ
ース本体の肉厚分の大径部123が施設されている。な
お、連結部１は、射出成形型内で半加硫状態とされてい
る。(Connecting Portion Forming Step) As shown in FIG. 1, two half connecting portions 1 each having a T-shape were formed by injection molding using NBR rubber.
The connecting portion 1 has one branch portion 11 and three open end portions 12, and a large-diameter portion 123 corresponding to the thickness of the hose body into which the hose body is inserted is provided on each open end portion 12 side. Have been facility. The connecting part 1 is in a semi-vulcanized state in the injection mold.
（ホース本体連結工程） 次に第２図に示すように、上記により形成された一方
の半割状の連結部１の各大径部13内に押出成形により加
硫状態に形成された３本のホース本体２の一端のそれぞ
れ配置した後、第３図に示すように他の一方の半割状の
連結部１を被せた。(Hose Body Connection Step) Next, as shown in FIG. 2, three vulcanized states formed by extrusion molding in each large diameter portion 13 of one half-shaped connection part 1 formed as described above. After each one end of the hose body 2 was placed, the other half-shaped connecting portion 1 was covered as shown in FIG.
（加硫工程） 次に、連結部１及びホース本体２の孔内にマンドレル
（図示せず）を挿入した状態で外側から加熱型（図示せ
ず）でプレスして加熱することにより、半加硫状態にあ
る連結部１及び加硫状態にあるホース本体２を全体的に
加硫して第４図に示す分岐ホース10を得た。(Vulcanization Step) Next, a mandrel (not shown) is inserted into the hole of the connecting portion 1 and the hose body 2 and is pressed from the outside with a heating mold (not shown) to heat the mandrel. The connecting portion 1 in the vulcanized state and the hose body 2 in the vulcanized state were entirely vulcanized to obtain a branch hose 10 shown in FIG.
得られた分岐ホース10は、連結部１の内側にバリが生
じたり、連結部１と各ホース本体２との間で位置ずれが
生じたりするこもなく良好なものだった。The obtained branch hose 10 was good without causing burrs on the inside of the connecting portion 1 and no displacement between the connecting portion 1 and each of the hose bodies 2.
［その他の実施例］ 第５図に縦断面で切った部分斜視図を示すように、１
つの分岐穴31をもつホース本体３と一端がこの分岐穴に
連通する他のホース本体とからなる２本のホース本体を
Ｔ字状に配置した分岐ホースを製造した。[Other Embodiments] As shown in FIG.
A branch hose was manufactured in which two hose bodies each including a hose body 3 having two branch holes 31 and another hose body having one end communicating with the branch holes were arranged in a T-shape.
この分岐ホースは、前記実施例と同様に半加硫状態に
ある連結部及び半加硫又は加硫されたホース本体をＴ字
状に配置した後、全体を蒸気缶内に入れ、蒸気圧により
連結部及びホース本体を加圧しながら全体的に加硫して
製造した。After arranging the semi-vulcanized connecting portion and the semi-vulcanized or vulcanized hose body in a T-shape in the same manner as in the previous embodiment, the branch hose is entirely placed in a steam can, and is subjected to steam pressure. It was manufactured by entirely vulcanizing the connection part and the hose body while applying pressure.
また、第６図から第９図に縦断面で切った部分斜視図
を示すように、全体形状がＹ字状、＋字状の分岐ホース
も同様に製造することができる。Further, as shown in a partial perspective view cut along a longitudinal section from FIG. 6 to FIG. 9, a branch hose having a Y-shaped or + -shaped overall shape can be similarly manufactured.
第６図の分岐ホースは全体形状がＹ字状の連結部４の
各開口端部41から３本のホース本体の端部をそれぞれ進
入させたもの、第７図の分岐ホースは１つの分岐穴51を
もちこの分岐穴51を頂点ととして屈曲したホース本体５
と一端がこの分岐穴51に連通する他のホース本体とから
なる２本のホース本体を連結部の孔内にＹ字状に配置し
たものである。また、第８図の分岐ホースは、全体形状
が＋字状の連結部６の各開口端部61から４本のホース本
体の端部をそれぞれ進入させたもの、第９図の分岐ホー
スは２つの分岐穴71をもつホース本体７と一端がこの分
岐穴に連通する他の２本のホース本体とからなる３本の
ホース本体を連結部の孔内に＋字状に配置したものであ
る。The branch hose shown in FIG. 6 has the ends of the three hose bodies inserted from the respective open ends 41 of the Y-shaped connecting portion 4, and the branch hose shown in FIG. 7 has one branch hole. Hose body 5 which has 51 and is bent with this branch hole 51 as the top
And two hose bodies, one end of which is connected to the branch hole 51, and another hose body, which are arranged in a Y-shape in the hole of the connecting portion. The branch hose shown in FIG. 8 has four ends of the hose body which are respectively inserted from the respective open ends 61 of the connecting portion 6 having a + shape, and the branch hose shown in FIG. Three hose bodies each including a hose body 7 having two branch holes 71 and two other hose bodies having one end communicating with the branch holes are arranged in a + -shape in the hole of the connecting portion.
さらに、第10図に縦断面で切った部分斜視図を示すよ
うに、連結部の孔内に挿入されたホース本体の端部の内
周面側にも薄肉連結部81を設けてホース本体の内周面側
にも接着面を設けることができ、この場合連結部とホー
ス本体との結合力が向上する。Further, as shown in a partial perspective view cut in a longitudinal section in FIG. 10, a thin-walled connecting portion 81 is provided also on the inner peripheral surface side of the end of the hose body inserted into the hole of the connecting portion, and An adhesive surface can also be provided on the inner peripheral surface side, and in this case, the coupling force between the connecting portion and the hose body is improved.
第１図〜第４図は本発明の一実施例の製造方法に関し、
第１図は連結部成形工程により得られた連結部の斜視
図、第２図は半割状の連結部の一方にホース本体を配置
した状態を示す斜視図、第３図はホース本体連結工程を
終えた状態を示す斜視図、第４図は得られた分岐ホース
の斜視図である。第５図〜第10図は本発明の他の実施例
の製造方法に関し、得られた分岐ホースの縦断面で切っ
た部分斜視図である。第11図は従来の分岐ホースの断面
図である。 １、４、６……連結部 ２、３、５、７……ホース本体 11……分岐部 12、41、61……開口端部 13……大径部 31、51、71……分岐穴1 to 4 relate to a manufacturing method according to an embodiment of the present invention.
FIG. 1 is a perspective view of a connecting portion obtained by a connecting portion forming step, FIG. 2 is a perspective view showing a state where a hose body is arranged on one of half-shaped connecting portions, and FIG. 3 is a hose body connecting step. FIG. 4 is a perspective view of the obtained branch hose. FIGS. 5 to 10 are partial perspective views of a branch hose obtained in a longitudinal section according to a manufacturing method of another embodiment of the present invention. FIG. 11 is a sectional view of a conventional branch hose. 1, 4, 6 ... connecting part 2, 3, 5, 7 ... hose body 11 ... branch part 12, 41, 61 ... open end part 13 ... large diameter part 31, 51, 71 ... branch hole
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B29D 23/00 F16L 41/02 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. 6 , DB name) B29D 23/00 F16L 41/02
Claims (1)
の分岐部と少なくとも３個の開口端部とをもつ管状の連
結部であって、縦断面で分割された２つの半割品からな
る連結部を形成する連結部成形工程と、 半加硫又は加硫状態のゴムよりなる少なくとも２本のホ
ース本体を該連結部の各開口端部の連通を遮断すること
なく該連結部の孔内に配置するホース本体連結工程と、 該連結部の外側を型で押えつつ該連結及び該ホース本体
を加硫して一体的に結合する加硫工程と、よりなること
を特徴とする分岐ホースの製造方法。1. A tubular connecting portion made of semi-vulcanized rubber and having at least one branch portion and at least three open end portions, wherein the tubular connecting portion is formed of two half-pieces divided in a longitudinal section. A connecting part forming step of forming a connecting part, and connecting at least two hose bodies made of semi-vulcanized or vulcanized rubber to the opening of the connecting part without interrupting the communication of each open end of the connecting part. A hose body connecting step of disposing the inside of the hose body; and a vulcanizing step of vulcanizing the connection and the hose body while pressing the outside of the connecting portion with a mold to integrally combine the hose bodies. Manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2079528A JP2922251B2 (en) | 1990-03-28 | 1990-03-28 | Branch hose manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2079528A JP2922251B2 (en) | 1990-03-28 | 1990-03-28 | Branch hose manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03278941A JPH03278941A (en) | 1991-12-10 |
| JP2922251B2 true JP2922251B2 (en) | 1999-07-19 |
Family
ID=13692487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2079528A Expired - Lifetime JP2922251B2 (en) | 1990-03-28 | 1990-03-28 | Branch hose manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2922251B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4995157B2 (en) * | 2008-08-08 | 2012-08-08 | 三菱重工業株式会社 | Piping junction structure and manufacturing method thereof |
| JP5835946B2 (en) * | 2011-05-27 | 2015-12-24 | ビーエルデーオリエンタル株式会社 | Pipe unit connection structure and split pipe joint |
-
1990
- 1990-03-28 JP JP2079528A patent/JP2922251B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03278941A (en) | 1991-12-10 |
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