JPS62184851A - High-pressure rubber hose and manufacture thereof and production unit thereof - Google Patents
High-pressure rubber hose and manufacture thereof and production unit thereofInfo
- Publication number
- JPS62184851A JPS62184851A JP61027638A JP2763886A JPS62184851A JP S62184851 A JPS62184851 A JP S62184851A JP 61027638 A JP61027638 A JP 61027638A JP 2763886 A JP2763886 A JP 2763886A JP S62184851 A JPS62184851 A JP S62184851A
- Authority
- JP
- Japan
- Prior art keywords
- hose
- layer
- inner tube
- tube rubber
- rubber layer
- 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
Links
- 229920001971 elastomer Polymers 0.000 title claims description 133
- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 230000003014 reinforcing effect Effects 0.000 claims description 52
- 239000000463 material Substances 0.000 claims description 29
- 239000000835 fiber Substances 0.000 claims description 13
- 239000012783 reinforcing fiber Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 230000000452 restraining effect Effects 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 129
- 238000010438 heat treatment Methods 0.000 description 12
- 238000004073 vulcanization Methods 0.000 description 11
- 230000002787 reinforcement Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000009954 braiding Methods 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 229920002943 EPDM rubber Polymers 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 208000000260 Warts Diseases 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 201000010153 skin papilloma Diseases 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 244000286663 Ficus elastica Species 0.000 description 1
- 241001150538 Iria Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は高圧ゴムホース（以下「ゴムホース」と略す）
及びその製造方法及びその製造装置に関する。ゴムホー
スとしてはエアコン用ホース、パワーステアリング用ホ
ース、クラッチ用ホース及びブレーキ用ホース等を例示
でき、このようなゴムホースは高密度の繊維補強層が形
成されている〈従来の技術〉
従来、上記タイプのゴムホースの一例としてエアコン用
ホースｌは、第７図の如く内管ゴム層２（例えばＮＢＲ
）、繊維補強層３（以下「補強層」と略す；例えばポリ
エステルＭ＆維製）及び外管ゴム層４（例えばＥＰＤＭ
）から構成されているそしてこのようなゴムホースｌは
、マンドレル（図示せず）へ内管ゴム層２を押し出して
補強層３を高密度に打ち込み、更に外管ゴム層４を押し
出して形成される。このとき、糸収縮の大きい補強繊維
により高密度に補強層３が形成されていると、加硫時に
補強層３の糸が収縮するため内管ゴム層２のゴム材料が
補強層３のあみ口から吹さ出して、ゴムホースｌの外表
面をイボ状に隆起させるおそれがある。そこで、加硫前
に生ポース（未加硫状態のホースをいう）の外管ゴム層
４表面へ布を巻きつけたり（特公昭５９−２９４２１号
公報等参照）、被鉛（特公昭６０−１７６８９号公報等
参照）をしたり、また生ホースを金型内へ入れる等して
ホース外表面を拘束することにより、前記内管ゴム層２
の吹き出しゴム材料による隆起がホース外表面へ出てこ
ないようにしていた。第７図における外管ゴム層４の外
周面のスパイラル状の縞５は、前記１１１（テープ状で
ある）を巻回して加硫し、その後その布を巻き戻して除
去したことにより残ったテープの跡である。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a high-pressure rubber hose (hereinafter abbreviated as "rubber hose").
The present invention also relates to a manufacturing method and an apparatus for manufacturing the same. Examples of rubber hoses include air conditioner hoses, power steering hoses, clutch hoses, and brake hoses, and such rubber hoses are formed with a high-density fiber-reinforced layer. As an example of a rubber hose, an air conditioner hose l has an inner tube rubber layer 2 (for example, NBR) as shown in FIG.
), fiber reinforcement layer 3 (hereinafter abbreviated as "reinforcement layer"; for example, made of polyester M&fiber) and outer tube rubber layer 4 (for example, EPDM)
), and such a rubber hose l is formed by extruding the inner tube rubber layer 2 onto a mandrel (not shown), driving the reinforcing layer 3 at high density, and then extruding the outer tube rubber layer 4. . At this time, if the reinforcing layer 3 is formed with high density from reinforcing fibers with large yarn shrinkage, the threads of the reinforcing layer 3 will shrink during vulcanization, so the rubber material of the inner tube rubber layer 2 will be There is a risk that the rubber hose l may be blown out and cause wart-like bumps on the outer surface of the rubber hose l. Therefore, before vulcanization, cloth is wrapped around the surface of the outer tube rubber layer 4 of the raw hose (referring to the hose in an unvulcanized state) (see Japanese Patent Publication No. 59-29421, etc.), The inner tube rubber layer 2 is
The bulges caused by the blown rubber material were prevented from coming out onto the outside surface of the hose. The spiral stripes 5 on the outer circumferential surface of the outer tube rubber layer 4 in FIG. 7 are the tape remaining after winding and vulcanizing the cloth 111 (which is in the form of a tape), and then rewinding and removing the cloth. It is the trace of
〈発明が解決しようとする問題点〉
このように形成された第５図のゴムホース１には以下の
問題点があった。<Problems to be Solved by the Invention> The rubber hose 1 shown in FIG. 5 formed in this manner has the following problems.
（ａ）補強層が高密度に打ち込まれると、あみ口重間に
内轡外管ゴム層のゴム材料が流入しがたく、該あみ口重
間に空気溜りができるため加硫時にこの空気が膨張し、
内・外管ゴム層の接着面積が低下する。特に、補強繊維
１６が糸収縮するタイプであると、内管ゴム層２から吹
き出したゴム材料により、溜った空気が外管ゴム層４側
へ押しやられ、外管ゴム層４が部分的に剥離状態となる
おそれがある。(a) When the reinforcing layer is densely driven, it is difficult for the rubber material of the inner and outer tube rubber layers to flow into the gap between the groove openings, and air pockets are formed between the groove openings, so this air is released during vulcanization. expands,
The adhesion area of the inner and outer tube rubber layers decreases. In particular, if the reinforcing fibers 16 are of the type that shrinks, the rubber material blown out from the inner tube rubber layer 2 will push the accumulated air toward the outer tube rubber layer 4, causing the outer tube rubber layer 4 to partially peel off. There is a risk that the condition may occur.
（ｂ）補強層３がスパイラルにより形成されているとき
は、上記の如く空気溜りがあると、逆方向に巻回された
補強ｍ、ｍｉｓ間（上下の糸層間）で糸ずれの発生する
おそれがある。(b) When the reinforcing layer 3 is formed by a spiral, if there is an air pocket as described above, there is a risk of thread slippage between the reinforcing m and mis (between the upper and lower yarn layers) wound in opposite directions. There is.
く問題点を解決するための手段〉
木発明者はかかる問題点を解決しようと鋭意研究を重ね
た結果、加硫時補強層が糸収縮すると内管ゴム層のゴム
材料が補強層のあみ目から吹き出すことに注目して下記
構成の発明をするに至った第１の発明はゴムホースに関
し、内管ゴム層へ補強層が形成され、押し出しにより外
管ゴム層を形成した後加硫をして形成されるゴムホース
であって、補強層のあみ口重間が内管ゴム層から吹き出
したゴム材料で充填されていることを特徴とする。Means for Solving the Problems〉 As a result of extensive research in an attempt to solve these problems, the inventor of the tree found that when the reinforcing layer shrinks during vulcanization, the rubber material of the inner tube rubber layer shrinks into the grooves of the reinforcing layer. The first invention, which was developed with the following structure focusing on blowing out of the hose, relates to a rubber hose, in which a reinforcing layer is formed on the inner tube rubber layer, an outer tube rubber layer is formed by extrusion, and then vulcanization is performed. The rubber hose is characterized in that the groove between the reinforcing layer and the opening is filled with a rubber material blown out from the inner tube rubber layer.
これにより、補強層のあみ口重間の空気溜りがなくなる
。尚、本明細書において補強層とは編組されたものと、
２方向のスパイラルにより形成されたものをいい、あみ
目とは、その補強層の交差する補強繊維にできる空間を
いう。This eliminates air pockets between the openings of the reinforcing layer. In addition, in this specification, the reinforcing layer refers to a braided layer,
It is formed by spirals in two directions, and the mesh is the space created by the reinforcing fibers that intersect in the reinforcing layer.
第２の発明は第１の発明のゴムホースの製造方法であり
、内管ゴム層へ補強層を形成した後、補強層の外周を拘
束し、補強Ｍ＆維が糸収縮する条件で加熱して補強層の
あみ口重間を内管ゴム層のゴム材料で充填し、外管ゴム
層を押出し成形後、加硫することを特徴とする。The second invention is a method for manufacturing the rubber hose according to the first invention, in which after forming a reinforcing layer on the inner tube rubber layer, the outer periphery of the reinforcing layer is restrained, and reinforcing is performed by heating under conditions that the reinforcing M & fibers shrink. It is characterized in that the space between the openings of the layers is filled with the rubber material of the inner tube rubber layer, and the outer tube rubber layer is extruded and then vulcanized.
第３の発明はゴムホースの製造装置に関し、第１押出し
機、補強層形成機、所定の拘束手段、所定の加熱手段、
第２押出し機及び加硫装置を具備することを特徴とする
。The third invention relates to a rubber hose manufacturing device, which includes a first extruder, a reinforcing layer forming machine, a predetermined restraint means, a predetermined heating means,
It is characterized by comprising a second extruder and a vulcanization device.
〈実施例〉 以下１本発明の実施例を図例に基づきながら説明する。<Example> An embodiment of the present invention will be described below with reference to figures.
（第１実施例；第１〜４図）
第１図は第２の発明に係る製造方法の各工程におけるホ
ースを示す図、第２図は第３の発明に係る製造装置１１
の概略構成図である。(First Example; Figures 1 to 4) Figure 1 is a diagram showing a hose in each step of the manufacturing method according to the second invention, and Figure 2 is a diagram showing a manufacturing apparatus 11 according to the third invention.
FIG.
以下、第２図の製造装２１１１を第１図のホース製造工
程と対比させながら説明する。The manufacturing equipment 2111 shown in FIG. 2 will be explained below in comparison with the hose manufacturing process shown in FIG. 1.
（工程■）マンドレル１２へ第１押出し機１３により内
管ゴム層１４（例えばＮＢＲ）を押し出す。(Step ①) The inner tube rubber layer 14 (for example, NBR) is extruded onto the mandrel 12 by the first extruder 13.
（工程ＩＩ ）次に、編組機１５（補強層成形機）によ
り内管ゴム層１４へ補強繊維１６を巻回し、高富度（補
強線！ａ１６の方があみ目から露出する内管ゴム層１４
よりも多い）な補強層１７を形成する。補強繊維１６に
はポリエステル、ポリアミド及びレーヨン等を例示でき
、工程ｍにおける加熱条件で２〜ｌＯ％糸収縮するもの
とする。(Step II) Next, the reinforcing fibers 16 are wound around the inner tube rubber layer 14 using the braiding machine 15 (reinforcement layer forming machine), and the inner tube rubber layer 14 with a high richness (reinforcement wire! A16 is exposed from the groove)
The reinforcing layer 17 is formed. Examples of the reinforcing fibers 16 include polyester, polyamide, and rayon, and the fibers shrink by 2 to 10% under the heating conditions in step m.
そして、接着剤塗布機１８によりホース中間体ＭへＲＦ
Ｌ等の接着剤を塗布する。Then, the adhesive applicator 18 applies RF to the hose intermediate body M.
Apply adhesive such as L.
（工程■）この工程ではホース中間体Ｍの外周面を拘束
し、内管ゴム層１４は完全に加硫されず、かつ補強繊維
１６が糸収縮する条件で加熱をする。例えば内管ゴム層
１４がＮＢＲ，補強繊維１６がポリエステルの場合には
１６０’ｃ、５〜１０分の条件で加熱をする。(Step 2) In this step, the outer peripheral surface of the hose intermediate M is restrained, and heating is performed under conditions that the inner tube rubber layer 14 is not completely vulcanized and the reinforcing fibers 16 shrink. For example, when the inner tube rubber layer 14 is NBR and the reinforcing fiber 16 is polyester, heating is performed at 160'C for 5 to 10 minutes.
ここに、内管ゴム層１４を半加硫状態としておくのは、
後に外管ゴム層２０と加硫接着させるためであり、本工
程において内管ゴム層１４の加硫を完ｒさせてもよい。Here, the reason why the inner tube rubber layer 14 is kept in a semi-vulcanized state is as follows.
This is to vulcanize and bond the inner tube rubber layer 14 to the outer tube rubber layer 20 later, and the vulcanization of the inner tube rubber layer 14 may be completed in this step.
第４図は１本工程に適用するホース中間体Ｍの拘束機能
と加熱機壱とを兼備えた装置を示す。上下一対のエンド
レステープ２３．２３″が各々テープ走行ローラ２５，
２６によりホース中間体Ｍの進行方向に走行されている
。このエンドレステープ２３にはスチール、ＰＥＴ、ガ
ラス、ナイロン等の単独または交織の織４１が使用でき
る。FIG. 4 shows a device which has both a function of restraining the intermediate hose M and a heating machine, which is applied to one process. A pair of upper and lower endless tapes 23.23'' are each connected to a tape running roller 25,
26 in the direction of movement of the hose intermediate body M. For this endless tape 23, a single or mixed weave 41 of steel, PET, glass, nylon, etc. can be used.
そして各エンドレステープ２３，２３’ は筒状の加熱
器２９の入口側の大内径部（ホース囲繞部３０）におい
て、ホース中間体Ｍを囲繞するように収束される。更に
進むと、ホース中間体Ｍの外径と略同一な内径のホース
拘束部３１により、ホース中間体Ｍは外周面を拘束され
ることとなる。The endless tapes 23, 23' are converged so as to surround the hose intermediate M at the large inner diameter portion (hose surrounding portion 30) on the inlet side of the cylindrical heater 29. Proceeding further, the outer peripheral surface of the hose intermediate body M is restrained by the hose restraining portion 31 having an inner diameter that is approximately the same as the outer diameter of the hose intermediate body M.
尚、２７．２７′ 、２８．２８’はエンドレステープ
２３．２］”のガイドローラであり、各々エンドレステ
ープ２３，２３′ と加熱器２９の出入口端部との干渉
を防止するとともに、フラットなエンドレステープ２３
，２３’がホース表面へ沿うようにテープ幅方向へ屈曲
させる役目もしている。Note that 27.27' and 28.28' are guide rollers for the endless tape 23.2'', which prevent interference between the endless tape 23 and 23' and the entrance/exit end of the heater 29, and also provide a flat surface. endless tape 23
, 23' also serves to bend the tape in the width direction along the hose surface.
そして、ホース中間体Ｍは筒状加熱機２９を通り抜ける
間に上記条件で加熱される。ここに、補強層１７は加熱
により糸収縮し、内管ゴム層１４は軟化するので、内管
ゴム層１４のゴム材料が吹き出す環境となる。しかしホ
ース中間体Ｍはエンドレステープ２３，２３’ に囲繞
されながら拘束部３１で外周面を拘束されるので、吹き
出すべき内管ゴム層１４のゴム材料は押しつぶされて、
第３図に示した如く補強層１７のあみ目を充填し、更に
補強層１７を被覆するように広がる。尚、つぶされた内
管ゴム層１４のゴム材料の外表面３３には、エンドレス
テープ２３．２３″の織目が刻設されることとなる。こ
れは外管ゴム層２０との接着性を向上させるという効果
がある（物理的な接着効果）。Then, the hose intermediate M is heated under the above conditions while passing through the cylindrical heating device 29. Here, the reinforcing layer 17 shrinks due to heating, and the inner tube rubber layer 14 softens, creating an environment in which the rubber material of the inner tube rubber layer 14 blows out. However, since the hose intermediate body M is surrounded by the endless tapes 23, 23' and its outer peripheral surface is restrained by the restraint part 31, the rubber material of the inner tube rubber layer 14 to be blown out is crushed.
As shown in FIG. 3, the grooves of the reinforcing layer 17 are filled and further spread to cover the reinforcing layer 17. Note that the texture of the endless tape 23.23'' will be engraved on the outer surface 33 of the rubber material of the crushed inner tube rubber layer 14. This will improve the adhesiveness with the outer tube rubber layer 20. It has the effect of improving (physical adhesion effect).
第４図の装置はホースを連続的に製造する場合に好適な
ものである。勿論、ホース中間体Ｍへ（ｉ）１１等のテ
ープをスパイラルに巻回する。 （ｉｉ）金型に入れる
等の手段を用いて外部拘束し、上記条件で加熱をすれば
、第３図の如く被強層１７のあみ口が内管ゴム層１４か
ら吹き出したゴム材料で充填されることとなる。The apparatus shown in FIG. 4 is suitable for continuous production of hoses. Of course, (i) a tape such as No. 11 is spirally wound around the hose intermediate M. (ii) If it is externally restrained using means such as putting it in a mold and heated under the above conditions, the groove opening of the reinforced layer 17 is filled with the rubber material blown out from the inner tube rubber layer 14 as shown in FIG. It will be done.
（工程■）筒状加熱機２９から出て、エンドレステープ
２３，２３−の剥されたホース中間体Ｍを示す。(Process ■) The intermediate hose M is shown after coming out of the cylindrical heating device 29 and from which the endless tapes 23, 23- have been peeled off.
（工程Ｖ）そして第２押出し機１９で外管ゴム層２０（
例えばＥＰＤＭ）を押し出してホース中間体Ｍを被覆し
、加硫装置２１を通して加硫を行い、マンドレル１２を
除去する。このとき、補強層１７のあみ目は第３図の如
く内管ゴム層１４のゴム材料で充填されており、空気の
溜る余地がない。更には、補強層１７の糸収縮が完了し
ているので、加硫時に内管ゴム層１４のゴム材料が吹き
出すおそれもないから平滑な外観のホースが得られる。(Step V) Then, the outer tube rubber layer 20 (
For example, EPDM) is extruded to cover the hose intermediate M, vulcanization is performed through the vulcanizer 21, and the mandrel 12 is removed. At this time, the grooves of the reinforcing layer 17 are filled with the rubber material of the inner tube rubber layer 14 as shown in FIG. 3, and there is no room for air to accumulate. Furthermore, since the yarn shrinkage of the reinforcing layer 17 has been completed, there is no fear that the rubber material of the inner tube rubber layer 14 will blow out during vulcanization, so that a hose with a smooth appearance can be obtained.
尚、２２は引取り機である。In addition, 22 is a collection machine.
このようにして製造されたゴムホースは、従来のものと
外観上回らかわるところなく、補強層のあみ１空間に内
管ゴム層１４から吹き出したゴム材料が充填されている
ことを特徴とする。従って、従来のゴムホースの如くの
空気溜りはなくなり、内・外管ゴム層の接着面ａ（補強
層との接着面積も含めて）が広くなって層間接着力が向
上する更には、（ｉ）内管ゴム層１４から吹き出したゴ
ム材料の外表面３３に刻設される織目により層間接着力
の向上を期待できる。また、内管ゴム層１４を二層構造
とし、その外側層を外管ゴム層２０と接着性の良い材料
（例えば内、外管ゴム層のゴム材料のブレンド品）で形
成すると、上記層間接着力は更に向上する。The rubber hose manufactured in this way has no difference in appearance from conventional hoses, and is characterized in that the space in the reinforcing layer is filled with rubber material blown out from the inner tube rubber layer 14. Therefore, air pockets like in conventional rubber hoses are eliminated, and the adhesion surface a of the inner and outer tube rubber layers (including the adhesion area with the reinforcing layer) is widened, improving interlayer adhesion.Furthermore, (i) The interlayer adhesion strength can be expected to be improved by the texture engraved on the outer surface 33 of the rubber material blown out from the inner tube rubber layer 14. In addition, if the inner tube rubber layer 14 has a two-layer structure and the outer layer is made of a material that has good adhesion to the outer tube rubber layer 20 (for example, a blend of rubber materials for the inner and outer tube rubber layers), the above-mentioned layer The grip will further improve.
（第２実施例）
本実施例のホースは、第１実施例のホース（内管ゴム層
１４ ； ＮＢＲ、外管ゴム層、ＥＰＤＭ）において補
強層をスパイラル製（以下「スパイラル補強層４１Ｊと
いう）としたことを特徴とする、補強縁１ａ１６にも第
１実施例と同じもの（ポリエステル等）を使用できる。(Second Embodiment) The hose of this embodiment has a reinforcing layer made of spiral material (hereinafter referred to as "spiral reinforcing layer 41J") in the hose of the first embodiment (inner tube rubber layer 14; NBR, outer tube rubber layer, EPDM). The same material (polyester, etc.) as in the first embodiment can be used for the reinforcing edge 1a16.
尚、本実施例のスパイラル補強層４１は相互に反対方向
へ巻回された上スパイラル層４３と下スパイラル層４５
とからなる（第５図参照）。The spiral reinforcing layer 41 of this embodiment includes an upper spiral layer 43 and a lower spiral layer 45 that are wound in opposite directions.
(See Figure 5).
スパイラル補強層４１を備えた本実施例のホースは、第
２図のホース製造装置１１において、編組機１５をスパ
イラル用の補強層成形機に替えて、第１実施例と同様に
形成することができる。また、空気溜りを生じさせない
点において本実施例のホースも第１実施例のホースと同
様の効果を有する。The hose of this embodiment including the spiral reinforcing layer 41 can be formed in the same manner as in the first embodiment by replacing the braiding machine 15 with a spiral reinforcing layer forming machine in the hose manufacturing apparatus 11 shown in FIG. can. Further, the hose of this embodiment also has the same effect as the hose of the first embodiment in that it does not cause air pockets.
そして更に、下記の特徴を有する。Furthermore, it has the following characteristics.
（ｉ）第６図の如くスパイラル補強層４１のあみ１空間
に、内管ゴム層１４から吹き出したゴム材料が充填され
ているので、各補強縁！１１６は糸ずれを全く生じさせ
ない。よって、ホースの耐久性が向上する。(i) As shown in FIG. 6, the first space of the spiral reinforcing layer 41 is filled with the rubber material blown out from the inner tube rubber layer 14, so each reinforcing edge! No. 116 causes no thread displacement at all. Therefore, the durability of the hose is improved.
（ｉｉ）従来、スパイラル補強層４１へ押出しにより外
管ゴム層２０を形成する際、押出し機のセンターノズル
の干渉や外管ゴム材料の押出し圧力により補強繊維がず
れるおそれがあった。しかし、本実施例に係るホースの
製造方法によれば、外管ゴム層２０を押し出すときには
既にスパイラル補強層４１のあみ１空間へ内管ゴム層１
４の吹き出しゴム材料が充填された状態にあるので、上
記糸ずれの問題は発生しなくなる。(ii) Conventionally, when forming the outer tube rubber layer 20 on the spiral reinforcing layer 41 by extrusion, there was a risk that the reinforcing fibers would be displaced due to interference from the center nozzle of the extruder or extrusion pressure of the outer tube rubber material. However, according to the hose manufacturing method according to the present embodiment, when extruding the outer tube rubber layer 20, the inner tube rubber layer 1 has already been inserted into the depth 1 space of the spiral reinforcing layer 41.
Since the blown rubber material No. 4 is in a filled state, the above-mentioned problem of yarn shearing does not occur.
（ｉｉｉ）スパイラル補強層４１は編組して形成された
補強層（以下ｒ編組補強層」という）に比べて、補強層
の成形速度を高めることができる。スパイラル用の補強
層成形機においては、糸ボビンを高速で公転できること
による。(iii) The spiral reinforcing layer 41 can increase the forming speed of the reinforcing layer compared to a reinforcing layer formed by braiding (hereinafter referred to as "r-braided reinforcing layer"). This is because the spiral reinforcing layer forming machine can revolve the yarn bobbin at high speed.
例えば、編組機では最高回転数が８０〜１００ｒｐ■で
あるのに対し、スパイラル用の補強層成形機では２００
ｒｐｍ以上まで回転数を上げることができる。For example, a braiding machine has a maximum rotation speed of 80 to 100 rpm, whereas a spiral reinforcing layer forming machine has a maximum rotation speed of 200 rpm.
It is possible to increase the rotation speed to more than RPM.
従って、補強層成形速度の高速化から、補強繊維を細く
して糸の打ち込み本数を増すことにより第１実施例の（
編組）補強層１７と同じ密度でもって、スパイラル補強
層４１を成形しても、ホースの生産性を低下させること
はない、そして、このスパイラル補強層４１のあみ目は
小さく、かつ全体的にみてより均等に分散されることと
なる。Therefore, in order to increase the molding speed of the reinforcing layer, by making the reinforcing fibers thinner and increasing the number of threads, the (
Even if the spiral reinforcing layer 41 is formed with the same density as the reinforcing layer 17 (braided), it will not reduce the productivity of the hose, and the grooves of this spiral reinforcing layer 41 are small and overall It will be more evenly distributed.
従って、各あみ１空間へ充填される内管ゴム層１４の吹
き出しゴム材料と、外管ゴム層２０とのゴム、ゴム接着
はより均一となり、居間接着力が増加してホースの耐久
性が向上する。Therefore, the rubber adhesion between the blown rubber material of the inner tube rubber layer 14 and the outer tube rubber layer 20, which is filled into each 1-space space, becomes more uniform, increasing the adhesion force and improving the durability of the hose. do.
〈発明の効果〉
以上説明したように、本発明のゴムホースは補強層のあ
み１空間に内管ゴム層のゴム材料が充填された構成であ
るから、内・外管ゴム層の間に空気が溜らず、内管ゴム
層と外管ゴム層との接着面積が広くなる。また、スパイ
ラル補強層を有するゴムホースにおいても、補強ｍ！ｉ
が糸ずれを起こさなくなる。従って、各層間の接着強度
が増してより優れた耐久性を奏するゴムホースとなる。<Effects of the Invention> As explained above, since the rubber hose of the present invention has a structure in which the rubber material of the inner tube rubber layer is filled in one space of the reinforcing layer, air is not trapped between the inner and outer tube rubber layers. No accumulation occurs, and the bonding area between the inner tube rubber layer and the outer tube rubber layer becomes larger. In addition, even in rubber hoses with a spiral reinforcement layer, reinforcement m! i
will no longer cause thread slippage. Therefore, the adhesive strength between each layer increases, resulting in a rubber hose that exhibits better durability.
更には、従来このようなタイプのゴムホースでは加硫時
内管ゴム層のゴム材料が吹き出して、ホース外表面がイ
ボ状となることを防止するため。Furthermore, in conventional rubber hoses of this type, the rubber material of the inner tube rubber layer is blown out during vulcanization to prevent the outer surface of the hose from becoming wart-like.
生ホース（外管ゴム層がカバリングされている）の外周
面を拘束していた。その手段としてテープ巻きや被鉛加
硫が行なわれていた。しかし、前者は簡単にすることが
できるが、第５図の如くホース外周面に縞があられれ、
意匠上に問題がある。The outer peripheral surface of the raw hose (covered with an outer tube rubber layer) was restrained. Tape wrapping and lead vulcanization were used as means for this purpose. However, although the former can be simplified, stripes are formed on the outer circumferential surface of the hose as shown in Fig. 5.
There is a problem with the design.
また、後者によればホース外周面を平滑にできるが設備
の大型化や鉛公害の問題がある。In addition, although the latter method allows the outer circumferential surface of the hose to be made smooth, there are problems such as increased equipment size and lead pollution.
ところで末弟２の発明に係るゴムホースの製造方法は、
ゴムホースがホース中間体（内管ゴム層へ補強層を形成
した後）のときに外部拘束をして、加熱することにより
糸の収縮を完了させ、外管ゴム層を被覆後加熱により糸
の収縮をなくするので内管ゴム層の吹き出しを防止する
。このときの外部拘束の方法は例えばテープをホース中
間体へ巻回させたり、第４図の如くエンドレステープで
ホース中間体を囲繞し箱状加熱機を通すことで。By the way, the method for manufacturing a rubber hose according to the invention of youngest brother 2 is as follows.
When the rubber hose is a hose intermediate (after forming a reinforcing layer on the inner tube rubber layer), it is externally restrained and heated to complete the shrinkage of the thread, and after covering the outer tube rubber layer, the thread shrinks by heating. This prevents the inner tube rubber layer from blowing out. The method of external restraint at this time is, for example, by winding a tape around the hose intermediate body, or by surrounding the hose intermediate body with endless tape and passing it through a box-shaped heating machine as shown in FIG.
容易に行うことができる。そして、その（予備加熱され
た）ホース中間体へ外管ゴム層を被覆させるのでホース
外周面の意匠性も害されない。It can be done easily. Since the (preheated) hose intermediate body is coated with the outer tube rubber layer, the design of the outer peripheral surface of the hose is not impaired.
つまり、水弟２の発明の製造方法によれば容易にホース
外周面の平滑な、意匠性のよいゴムホースを得られるこ
ととなる。In other words, according to the manufacturing method of the invention of Suishi 2, it is possible to easily obtain a rubber hose with a smooth outer circumferential surface and a good design.
また、水弟３の発明の製造装置によれば上記第２の製造
方法を連続的に実施して、第１の発明のゴムホースを製
造できるので、ホースの生産性を向上させるという効果
がある。Further, according to the manufacturing apparatus of the invention of Mizui 3, the rubber hose of the first invention can be manufactured by continuously carrying out the second manufacturing method, which has the effect of improving the productivity of the hose.
第１〜４図は本発明の第１実施例を、第５．６図は第２
実施例を示し、第１図は第２の発明の製造方法の各工程
におけるゴムホースの状態を示す図、第２図は第３の発
明の製造装置の概略構成図、第３図は内管ゴム層１４の
ゴム材料が補強層１７のあみ自交間を充填している状態
を示したホース中間体Ｍの表面を示す図、第４図は第３
の発明の製造装置に適用する加熱器２９を示す図、第５
図は第２実施例のホースを示す断面図、第６図は内管ゴ
ム層１４のゴム材料がスパイラル補強層４１のあみ自交
間を充填している状態を示したホース中間体Ｍの表面を
示す図、
第７図は従来例のゴムホース１を示す断面図である。
１１・・・製造装置、
１２・・・マンドレル、
１３・・・第１押出し機。
１４・・・内管ゴム層、
１５・・・繊維補強層成形機、
１６・・・補強繊維、
１７．４１・・・補強層重１補強層）、１８・・・接着
剤塗布機、
１９・・・第２押出し機、
２０・・・外管ゴム層。
２１・・・加硫機。
２３．２３’・・・エンドレステープ。
２５．２５’ 、２６．２６’・・・テープ走行ローラ
、
２９・・・加熱機、
３０・・・ホース囲繞部。
３１・・・ホース拘束部、
Ｍ・・・ホース中間体。
特 許 出 願 人
豊田合成株式会社
代 理 人 １
−！；−−−
弁理士 飯田堅太部ｉ息 −・１
第 ＩｒＩＡ
ユ２
第２図
１１＼、
第３図
第５図Figures 1 to 4 show the first embodiment of the present invention, and Figure 5.6 shows the second embodiment.
Examples are shown, FIG. 1 is a diagram showing the state of the rubber hose in each step of the manufacturing method of the second invention, FIG. 2 is a schematic configuration diagram of the manufacturing apparatus of the third invention, and FIG. 3 is the inner tube rubber FIG. 4 is a diagram showing the surface of the hose intermediate M showing a state in which the rubber material of the layer 14 fills the spaces between the threads of the reinforcing layer 17.
Fig. 5 shows a heater 29 applied to the manufacturing apparatus of the invention.
The figure is a cross-sectional view showing the hose of the second embodiment, and FIG. 6 is the surface of the hose intermediate M showing the state in which the rubber material of the inner tube rubber layer 14 fills the intersecting spaces of the spiral reinforcing layer 41. FIG. 7 is a sectional view showing a conventional rubber hose 1. 11... Manufacturing device, 12... Mandrel, 13... First extruder. 14... Inner tube rubber layer, 15... Fiber reinforcement layer molding machine, 16... Reinforcement fiber, 17.41... Reinforcement layer weight 1 reinforcement layer), 18... Adhesive applicator, 19 ...Second extruder, 20...Outer tube rubber layer. 21... Vulcanizing machine. 23.23'...Endless tape. 25.25', 26.26'... Tape running roller, 29... Heating machine, 30... Hose surrounding section. 31...Hose restraint part, M...Hose intermediate body. Patent applicant Toyoda Gosei Co., Ltd. Agent 1
-! ;--- Patent Attorney Kenta Iida -・1 IrIA U2 Figure 2 11\, Figure 3 Figure 5
Claims (1)
り外管ゴム層を形成した後加硫して形成される高圧ゴム
ホースであつて、 前記繊維補強層のあみ目空間が前記内管ゴム層から吹き
出したゴム材料で充填されていることを特徴とする高圧
ゴムホース。 ２、内管ゴム層へ繊維補強層を形成した後、前記繊維補
強層の外周を拘束し、補強繊維が糸収縮する条件で加熱
して前記繊維補強層のあみ目空間を前記内管ゴム層のゴ
ム材料で充填し、 外管ゴム層を押出し成形後、加硫することを特徴とする
高圧ゴムホースの製造方法。 ３、下記（ａ）〜（ｆ）の各構成要件 （ａ）内管ゴム層を形成する第１押出し機、（ｂ）前記
内管ゴム層へ繊維補強層を形成する繊維補強層成形機、 （ｃ）前記繊維補強層が打ち込まれた内管ゴム層（以下
ホース中間体という）の外周面の拘束手段、 （ｄ）ホース中間体が前記拘束手段に拘束されている時
、前記ホース中間体を加熱する加熱手段（ｅ）外管ゴム
層を形成する第２押出し機、（ｆ）加硫装置 を具備している高圧ゴムホースの製造装置。 ４、ホース中間体の進行方向へ複数のエンドレステープ
を走行させるテープ走行ローラと、 前記エンドレステープを集束させて前記ホース中間体へ
囲繞させるホース囲繞部と、前記ホース中間体の外径と
略同一な内径のホース拘束部とを有する加熱器と が具備されていることを特徴とする特許請求の範囲第３
項記載の高圧ゴムホースの製造装置。[Scope of Claims] 1. A high-pressure rubber hose formed by forming a fiber reinforcing layer on an inner tube rubber layer, forming an outer tube rubber layer by extrusion, and then vulcanizing the hose, comprising: A high-pressure rubber hose characterized in that a space is filled with a rubber material blown out from the inner tube rubber layer. 2. After forming a fiber reinforced layer on the inner tube rubber layer, the outer periphery of the fiber reinforced layer is restrained and heated under conditions that cause the reinforcing fibers to shrink, thereby forming the groove spaces of the fiber reinforced layer into the inner tube rubber layer. A method for manufacturing a high-pressure rubber hose, characterized by filling the hose with a rubber material, extruding the outer tube rubber layer, and then vulcanizing it. 3. Each of the following constituent elements (a) to (f): (a) a first extruder that forms the inner tube rubber layer; (b) a fiber reinforced layer molding machine that forms a fiber reinforced layer on the inner tube rubber layer; (c) a means for restraining the outer circumferential surface of the inner tube rubber layer (hereinafter referred to as a hose intermediate) into which the fiber reinforcing layer has been implanted; (d) when the hose intermediate is restrained by the restraining means, the hose intermediate An apparatus for manufacturing a high-pressure rubber hose, comprising: (e) a second extruder for forming an outer tube rubber layer; and (f) a vulcanizing device. 4. A tape running roller that runs a plurality of endless tapes in the direction in which the hose intermediate body travels; a hose surrounding portion that collects the endless tapes and surrounds the hose intermediate body; and a hose surrounding portion that has approximately the same outer diameter as the hose intermediate body. Claim 3, characterized in that the heater is equipped with a heater having a hose restraining portion with an inner diameter of
The high-pressure rubber hose manufacturing device described in 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61027638A JPS62184851A (en) | 1986-02-10 | 1986-02-10 | High-pressure rubber hose and manufacture thereof and production unit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61027638A JPS62184851A (en) | 1986-02-10 | 1986-02-10 | High-pressure rubber hose and manufacture thereof and production unit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62184851A true JPS62184851A (en) | 1987-08-13 |
Family
ID=12226481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61027638A Pending JPS62184851A (en) | 1986-02-10 | 1986-02-10 | High-pressure rubber hose and manufacture thereof and production unit thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62184851A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6463125A (en) * | 1987-09-04 | 1989-03-09 | Yokohama Rubber Co Ltd | Method and apparatus for manufacturing braided hose |
| US5912023A (en) * | 1995-10-17 | 1999-06-15 | Yamashita Rubber Kabushiki Kaisha | Method of manufacturing and a manufacturing device of reinforced hose |
| US7383602B2 (en) | 2001-06-14 | 2008-06-10 | Uni-Charm Corporation | Device for holding cleaning wiper and cleaning article employing holding device |
| US7739770B2 (en) | 2000-10-27 | 2010-06-22 | Uni-Charm Corporation | Handy mop |
-
1986
- 1986-02-10 JP JP61027638A patent/JPS62184851A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6463125A (en) * | 1987-09-04 | 1989-03-09 | Yokohama Rubber Co Ltd | Method and apparatus for manufacturing braided hose |
| US5912023A (en) * | 1995-10-17 | 1999-06-15 | Yamashita Rubber Kabushiki Kaisha | Method of manufacturing and a manufacturing device of reinforced hose |
| US7739770B2 (en) | 2000-10-27 | 2010-06-22 | Uni-Charm Corporation | Handy mop |
| US7383602B2 (en) | 2001-06-14 | 2008-06-10 | Uni-Charm Corporation | Device for holding cleaning wiper and cleaning article employing holding device |
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