JP2011196402A - Method of manufacturing rubber hose - Google Patents

Method of manufacturing rubber hose Download PDF

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JP2011196402A
JP2011196402A JP2010061029A JP2010061029A JP2011196402A JP 2011196402 A JP2011196402 A JP 2011196402A JP 2010061029 A JP2010061029 A JP 2010061029A JP 2010061029 A JP2010061029 A JP 2010061029A JP 2011196402 A JP2011196402 A JP 2011196402A
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steel wire
hose
manufacturing
reinforcing layer
rubber hose
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JP5556269B2 (en
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Ryotaro Suefuji
亮太郎 末藤
Kazuyoshi Kayama
和義 加山
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a method of manufacturing a rubber hose, capable of restraining reduction in patterning performance of a steel wire for forming a reinforcing layer.SOLUTION: The reinforcing layer is formed by laminating a drawn steel wire on an inner peripheral surface of an inner surface rubber layer laminated on an outer peripheral surface of a mandrel, and a hose mold is molded by laminating an outer surface rubber layer on the outer peripheral surface of this reinforcing layer, and when manufacturing the rubber hose by vulcanizing the hose mold, a cooling storage process of storing the steel wire in a temperature range of -15°C to 15°C is arranged up to forming the reinforcing layer from just after manufacturing the steel wire by drawing a steel wire base material, so that the steel wire is easily wound when forming the reinforcing layer by delaying age hardening of the steel wire.

Description

本発明は、ゴムホースの製造方法に関し、さらに詳しくは、補強層を形成するスチールワイヤの型付け性の低下を抑制することができるゴムホースの製造方法に関するものである。   The present invention relates to a method for manufacturing a rubber hose, and more particularly to a method for manufacturing a rubber hose capable of suppressing a decrease in moldability of a steel wire forming a reinforcing layer.

高圧仕様のゴムホースでは、スチールワイヤを編組して巻き付けて形成した補強層、或いは、スパイラル状に巻き付けて形成した補強層をホース内部に設けている。この補強層を形成するスチールワイヤは、強度を向上させるため、例えば、図２に示すようにスチールワイヤ母材６をダイス８に挿通させる伸線加工が施されている（例えば、特許文献１参照）。   In a high-pressure rubber hose, a reinforcing layer formed by braiding and winding a steel wire or a reinforcing layer formed by winding in a spiral shape is provided inside the hose. In order to improve the strength of the steel wire forming this reinforcing layer, for example, as shown in FIG. 2, a wire drawing process is performed in which the steel wire base material 6 is inserted into a die 8 (see, for example, Patent Document 1). ).

この伸線加工では、スチールワイヤ母材６が急速に縮径変形されるため、伸線加工されたスチールワイヤ７では時効硬化が生じる。そのため、このスチールワイヤ７を常温程度で保管しておくと時効硬化が進んで強度（剛性）が経時的に増大する。スチールワイヤ７の強度（剛性）が増大した後で補強層を形成する工程を行なうと、スチールワイヤ７を内面ゴム層等のホース構成部材の外周面に巻き付ける際に、スチールワイヤ７により大きな復元力が生じるため巻き付け難くなり、また、巻き付けてもホース構造部材との密着不良が生じる（型付け性の低下）という問題があった。スチールワイヤの型付け性が低下すると、ホースの生産性が低下するともに、製造したホースの品質に悪影響が生じる。   In this wire drawing process, the steel wire base material 6 is rapidly contracted in diameter, so that the age-hardened steel wire 7 undergoes age hardening. Therefore, if this steel wire 7 is stored at about room temperature, age hardening proceeds and the strength (rigidity) increases with time. When the step of forming the reinforcement layer after the strength (rigidity) of the steel wire 7 is increased, the steel wire 7 has a large restoring force when the steel wire 7 is wound around the outer peripheral surface of a hose component such as an inner rubber layer. As a result, there is a problem that winding becomes difficult, and even when wound, there is a problem of poor adhesion with the hose structure member (decrease in moldability). When the moldability of the steel wire is lowered, the productivity of the hose is lowered and the quality of the manufactured hose is adversely affected.

特開平１０−１６６０２７号公報Japanese Patent Laid-Open No. 10-166027

本発明の目的は、補強層を形成するスチールワイヤの型付け性の低下を抑制することができるゴムホースの製造方法を提供することにある。   The objective of this invention is providing the manufacturing method of the rubber hose which can suppress the fall of the moldability of the steel wire which forms a reinforcement layer.

上記目的を達成するため本発明のゴムホースの製造方法は、伸線加工したスチールワイヤを、マンドレルの外周面に積層したホース構成部材の外周面に積層して補強層を形成し、この補強層の外周面にさらにホース構成部材を積層してホース成形体を成形し、次いで、このホース成形体を加硫するゴムホースの製造方法において、スチールワイヤ母材を伸線加工して前記スチールワイヤを製造した直後から前記補強層を形成するまでの間に、スチールワイヤを−１５℃〜１５℃の温度範囲で保管する冷却保管工程を有することを特徴とするものである。   In order to achieve the above object, the method of manufacturing a rubber hose according to the present invention comprises forming a reinforcing layer by laminating a drawn steel wire on the outer peripheral surface of a hose constituting member laminated on the outer peripheral surface of a mandrel. A hose forming body was formed by further stacking hose components on the outer peripheral surface, and then the steel wire was drawn by drawing a steel wire base material in a rubber hose manufacturing method for vulcanizing the hose forming body. It is characterized by having a cooling storage step of storing the steel wire in a temperature range of −15 ° C. to 15 ° C. immediately after the reinforcement layer is formed.

ここで、例えば、前記スチールワイヤを製造した直後から前記補強層を形成するまでに経過した待機時間から、前記冷却保管工程を行なう時間を差し引いた時間が７２時間以下にする。前記冷却保管工程を、温度管理された閉空間で行なうこともできる。また、前記冷却保管工程を、スチールワイヤを輸送する輸送車両において行なうこともできる。前記補強層は、例えば、スチールワイヤを編組して形成される編組層である。   Here, for example, the time obtained by subtracting the time during which the cooling storage process is performed from the standby time that has elapsed since the steel wire was manufactured until the reinforcing layer is formed is 72 hours or less. The cold storage process can be performed in a temperature-controlled closed space. Moreover, the said cooling storage process can also be performed in the transport vehicle which transports a steel wire. The reinforcing layer is a braided layer formed by braiding steel wires, for example.

本発明のゴムホースの製造方法によれば、伸線加工してスチールワイヤを製造した直後から、このスチールワイヤを用いて補強層を形成するまでの間に、スチールワイヤを−１５℃〜１５℃の温度範囲で保管する冷却保管工程を有しているので、伸線加工したスチールワイヤの時効硬化の進行を遅らせることができる。そのため、補強層を形成する際のスチールワイヤの強度（剛性）を小さくすることができ、スチールワイヤを内面ゴム層等のホース構成部材の外周面に巻き付け易くなる。また、巻き付けたスチールワイヤとホース構造部材との密着性も向上するので、製造したホースの品質も向上する。   According to the method for producing a rubber hose of the present invention, the steel wire is kept at −15 ° C. to 15 ° C. immediately after the steel wire is produced by drawing and until the reinforcing layer is formed using the steel wire. Since it has the cold storage process of storing in the temperature range, the progress of age hardening of the drawn steel wire can be delayed. Therefore, the strength (rigidity) of the steel wire when forming the reinforcing layer can be reduced, and the steel wire can be easily wound around the outer peripheral surface of the hose component such as the inner rubber layer. Moreover, since the adhesiveness between the wound steel wire and the hose structural member is also improved, the quality of the manufactured hose is also improved.

本発明のゴムホースの製造方法の工程を例示する全体概要図である。It is a whole schematic diagram which illustrates the process of the manufacturing method of the rubber hose of this invention. 伸線加工してスチールワイヤを製造する工程を例示する説明図である。It is explanatory drawing which illustrates the process of manufacturing a steel wire by wire drawing. 伸線加工したスチールワイヤを用いて補強層を形成する工程を例示する説明図である。It is explanatory drawing which illustrates the process of forming a reinforcement layer using the drawn steel wire. 本発明により製造したゴムホースの一部を切り裂いて示す説明図である。It is explanatory drawing which cuts and shows a part of rubber hose manufactured by this invention.

以下、本発明のゴムホースの製造方法を図に示した実施形態に基づいて説明する。   Hereinafter, the manufacturing method of the rubber hose of this invention is demonstrated based on embodiment shown in the figure.

図４に例示するように、本発明により製造したゴムホース１は、内面ゴム層２の外周側に、順に、補強層３ａ、中間ゴム層４、補強層３ｂ、外面ゴム層５を積層している。補強層３ａ、３ｂは、単線のスチールワイヤ７を所定の編組角度で編組して形成されている。スチールワイヤ７の外径は例えば、０．２ｍｍ〜０．８ｍｍ程度である。   As illustrated in FIG. 4, the rubber hose 1 manufactured according to the present invention has a reinforcing layer 3 a, an intermediate rubber layer 4, a reinforcing layer 3 b, and an outer rubber layer 5 laminated in order on the outer peripheral side of the inner rubber layer 2. . The reinforcing layers 3a and 3b are formed by braiding a single steel wire 7 at a predetermined braiding angle. The outer diameter of the steel wire 7 is, for example, about 0.2 mm to 0.8 mm.

補強層の数は２層に限らず、単層、或いは３層以上の場合もある。また、スチールワイヤ７をスパイラル状に巻き付けて補強層３ａ、３ｂを形成する場合もある。   The number of reinforcing layers is not limited to two but may be a single layer or three or more layers. Further, the reinforcing layers 3a and 3b may be formed by winding the steel wire 7 in a spiral shape.

図１に例示するように本発明は、補強層３ａ、３ｂを形成するスチールワイヤ７を伸線加工して製造する工程と、伸線加工したスチールワイヤ７やその他ゴム等のホース構成部材を用いてホース成形体を成形する工程と、成形したホース成形体を加硫する工程とを有している。   As illustrated in FIG. 1, the present invention uses a step of manufacturing a steel wire 7 for forming the reinforcing layers 3 a and 3 b by drawing, and the drawn steel wire 7 and other hose components such as rubber. And forming a hose molded body and vulcanizing the molded hose molded body.

スチールワイヤ７を製造する工程では、図２に例示するように、スチールワイヤ母材６をダイス８に挿通させて引き抜く伸線加工を行なってスチールワイヤ７が製造される。この伸線加工では、ワイヤ径が、例えば９０％〜９８％程度に縮径される。引き抜き速度は、例えば３ｍ／ｓ〜２０ｍ／ｓ程度である。   In the process of manufacturing the steel wire 7, as illustrated in FIG. 2, the steel wire 7 is manufactured by drawing the steel wire base material 6 through a die 8 and drawing it. In this wire drawing, the wire diameter is reduced to, for example, about 90% to 98%. The drawing speed is, for example, about 3 m / s to 20 m / s.

伸線加工ではスチールワイヤ母材６が急速に縮径変形されるので、伸線加工されたスチールワイヤ７には、炭素原子等の転位へ固着することによる時効硬化が生じ、経時的にスチールワイヤ７の強度（剛性）が増大する。そこで、本発明では、スチールワイヤ母材６を伸線加工することによりスチールワイヤ７を製造した直後から補強層３ａ、３ｂを形成するまでの間に、スチールワイヤ７を−１５℃〜１５℃の温度範囲で積極的に冷却保管する冷却保管工程を有している。この冷却保管工程により、スチールワイヤ７の時効硬化の進行が鈍化するので、スチールワイヤ７の強度（剛性）の増大を遅らせることができる。   In the wire drawing, the steel wire base material 6 is rapidly reduced in diameter, and thus the steel wire 7 that has been drawn is subject to age hardening due to fixing to dislocations such as carbon atoms, and the steel wire is gradually deteriorated. 7 strength (rigidity) increases. Therefore, in the present invention, the steel wire 7 is kept at −15 ° C. to 15 ° C. immediately after the steel wire 7 is manufactured by drawing the steel wire base material 6 and before the reinforcing layers 3a and 3b are formed. It has a cold storage process that actively cools and stores in the temperature range. Since the progress of age hardening of the steel wire 7 is slowed by this cold storage process, the increase in the strength (rigidity) of the steel wire 7 can be delayed.

この実施形態では、スチールワイヤ７を製造する工程と、ホース成形体を成形する工程との間に、一次保管する工程と、二次保管する工程とを有している。一次保管する工程とは、例えば、伸線加工を行なってスチールワイヤ７を製造する工場（製造場所）で、製造したスチールワイヤ７を保管する工程や、その工場（製造場所）からホース成形体を成形する工場（製造場所）まで輸送する工程等が該当する。   In this embodiment, it has the process of primary storage and the process of secondary storage between the process of manufacturing the steel wire 7, and the process of shape | molding a hose molded object. The primary storage process is, for example, a factory (manufacturing place) where the steel wire 7 is manufactured by wire drawing, a process of storing the manufactured steel wire 7, and a hose molded body from the factory (manufacturing place). This includes the process of transporting to the molding factory (manufacturing location).

二次保管する工程とは、ホース成形体を成形する工場（製造場所）でスチールワイヤ７を保管する工程等が該当する。   The secondary storage process corresponds to a process of storing the steel wire 7 in a factory (manufacturing place) for forming a hose molded body.

二次保管する工程がなく、一次保管する工程のみの場合もあり、或いは更に三次、四次保管する工程が存在する場合もある。いずれの場合でも、本発明では、スチールワイヤ母材６を伸線加工してスチールワイヤ７を製造した直後から、このスチールワイヤ７を用いて補強層３ａ、３ｂを形成するまでの間に、スチールワイヤ７を−１５℃〜１５℃の温度範囲で保管する冷却保管工程を有している。   There may be a case where there is no secondary storage step and only a primary storage step, or there may be a tertiary or quaternary storage step. In any case, in the present invention, immediately after the steel wire base material 6 is drawn to manufacture the steel wire 7, the steel wire 7 is used to form the reinforcing layers 3a and 3b. It has a cold storage process for storing the wire 7 in a temperature range of −15 ° C. to 15 ° C.

保管する温度が−１５℃未満にしても時効硬化の進行を遅らせる効果はそれ程変化しない。また、２０℃以上では、時効硬化の進行を遅らせる効果が小さくなる。そのため、冷却保管工程の温度範囲は−１５℃〜１５℃にし、より好ましくは−１５℃〜５℃程度の温度範囲で保管する。   Even if the storage temperature is less than −15 ° C., the effect of delaying the progress of age hardening does not change so much. Moreover, at 20 degreeC or more, the effect which delays progress of age hardening becomes small. Therefore, the temperature range of the cold storage process is -15 ° C to 15 ° C, and more preferably, the temperature range is about -15 ° C to 5 ° C.

時効硬化によるスチールワイヤ７の強度（剛性）増大があまり進んでいない段階で確実に補強層３ａ、３ｂを形成するには、スチールワイヤ７を製造した直後から、このスチールワイヤ７を用いて補強層３ａ、３ｂを形成するまでに経過した待機時間から、冷却保管工程を行なう時間を差し引いた時間が、例えば、７２時間以下、より好ましくは４８時間以下になるようにするとよい。   In order to reliably form the reinforcing layers 3a and 3b at a stage where the strength (rigidity) of the steel wire 7 is not so much increased by age hardening, the reinforcing layer 3a and 3b is formed using the steel wire 7 immediately after the steel wire 7 is manufactured. The time obtained by subtracting the time during which the cooling storage process is performed from the waiting time elapsed until the formation of 3a and 3b is, for example, 72 hours or less, and more preferably 48 hours or less.

冷却保管工程は、例えば、温度管理された保管倉庫（恒温室）等の閉空間で行なう。冷却保管工程は、例えば、スチールワイヤ７を製造する工場（製造場所）からホース成形体を成形する工場（製造場所）まで、スチールワイヤ７を輸送する輸送車両において行なうこともできる。即ち、トラック等の荷室を温度管理された閉空間として利用して冷却保管工程を行なうこともできる。   The cooling storage process is performed in a closed space such as a temperature-controlled storage warehouse (constant temperature chamber), for example. The cold storage process can be performed, for example, in a transport vehicle that transports the steel wire 7 from a factory (manufacturing place) that manufactures the steel wire 7 to a factory (manufacturing place) that forms the hose molded body. That is, the cooling storage process can be performed using a cargo room such as a truck as a temperature-controlled closed space.

ホース成形体を成形する工程では、図３に例示するようにコアとなるマンドレル１１の外周側に、順次、未加硫ゴムからなる内面ゴム層２、補強層３ａ、未加硫ゴムからなる中間ゴム層４、補強層３ｂ、未加硫ゴムからなる外面ゴム層５のホース構成部材が同軸状に積層される。   In the step of forming the hose molded body, as illustrated in FIG. 3, an inner rubber layer 2 made of unvulcanized rubber, a reinforcing layer 3a, and an intermediate made of unvulcanized rubber are sequentially formed on the outer peripheral side of the mandrel 11 serving as a core. The hose constituent members of the rubber layer 4, the reinforcing layer 3b, and the outer rubber layer 5 made of unvulcanized rubber are laminated coaxially.

補強層３ａを形成する際には、図３に例示するようにマンドレル１１の外周面を覆うように編組機９が設置される。編組機９には、スチールワイヤ７を巻回した多数のリール１０が備わっている。編組機９のキャリアは、マンドレル１１の軸心を中心にして、マンドレル１１のまわりを回転する。そして、編組機９のキャリアを、マンドレル１１の軸心を中心に回転させるとともに、マンドレル１１を軸方向（長手方向）に移動させて、内面ゴム層２の外周面にスチールワイヤ７を所定の配向角度で編組させて巻き付ける。補強層３ｂを形成する場合も同様であり、この場合は、中間ゴム層４の外周面にスチールワイヤ７を所定の配向角度で編組させて巻き付ける。   When forming the reinforcement layer 3a, the braiding machine 9 is installed so that the outer peripheral surface of the mandrel 11 may be covered as illustrated in FIG. The braiding machine 9 is provided with a number of reels 10 around which steel wires 7 are wound. The carrier of the braiding machine 9 rotates around the mandrel 11 around the axis of the mandrel 11. Then, the carrier of the braiding machine 9 is rotated about the axis of the mandrel 11 and the mandrel 11 is moved in the axial direction (longitudinal direction) so that the steel wire 7 is oriented in a predetermined orientation on the outer peripheral surface of the inner rubber layer 2. Wrap by braiding at an angle. The same applies to the case where the reinforcing layer 3b is formed. In this case, the steel wire 7 is braided and wound around the outer peripheral surface of the intermediate rubber layer 4 at a predetermined orientation angle.

補強層３ａ、３ｂをスパイラル構造にする場合は、内面ゴム層２の外周面にスチールワイヤ７をスパイラル状に巻き付けて補強層３ａを形成し、中間ゴム層４の外周面にスチールワイヤ７をスパイラル状に巻き付けて補強層３ｂを形成する。   When the reinforcing layers 3 a and 3 b have a spiral structure, the steel wire 7 is spirally wound around the outer peripheral surface of the inner rubber layer 2 to form the reinforcing layer 3 a, and the steel wire 7 is spiraled around the outer peripheral surface of the intermediate rubber layer 4. The reinforcing layer 3b is formed by winding in the shape.

本発明では、冷却保管工程を設けることによって、伸線加工されたスチールワイヤ７の時効硬化による強度（剛性）の増大が遅らされている。そのため、スチールワイヤ７を内面ゴム層２の外周面、中間ゴム層４の外周面に巻き付ける際のスチールワイヤ７の復元力がまだ小さい状態であり、巻き付け易くなる。それ故、ホースの生産性を向上させるには有利になる。また、巻き付けたスチールワイヤ７と内面ゴム層２および中間ゴム層４との密着性も向上する。このように冷却保管工程を設けることにより、伸線加工して製造したスチールワイヤ７の型付け性の低下を抑制することが可能になる。   In the present invention, an increase in strength (rigidity) due to age hardening of the drawn steel wire 7 is delayed by providing a cold storage process. Therefore, the restoring force of the steel wire 7 when the steel wire 7 is wound around the outer peripheral surface of the inner rubber layer 2 and the outer peripheral surface of the intermediate rubber layer 4 is still small, and it becomes easy to wind. Therefore, it is advantageous for improving the productivity of the hose. Further, adhesion between the wound steel wire 7 and the inner rubber layer 2 and the intermediate rubber layer 4 is also improved. By providing the cooling storage step in this way, it is possible to suppress a decrease in the moldability of the steel wire 7 manufactured by drawing.

ホース成形体を加硫する工程では、ホース成形体を加硫装置（加硫函）によって加硫し、これによりゴムホース１が完成する。本発明では、巻き付けたスチールワイヤ７と内面ゴム層２および中間ゴム層４との密着性が向上しているので、製造したゴムホース１の品質も向上することになる。   In the step of vulcanizing the hose molded body, the hose molded body is vulcanized by a vulcanizing device (vulcanizing box), whereby the rubber hose 1 is completed. In the present invention, since the adhesion between the wound steel wire 7 and the inner rubber layer 2 and the intermediate rubber layer 4 is improved, the quality of the manufactured rubber hose 1 is also improved.

スチールワイヤ径を共通にして（０．４０ｍｍ）、スチールワイヤの仕様および伸線加工した後の保管温度条件を表１のように異ならせた１６種類の試験サンプル（実施例１〜１２、比較例１〜４）を作製し、それぞれの試験サンプルについて下記の型付け性および切断荷重およびを評価した。この評価結果を表１に示す。   16 types of test samples (Examples 1 to 12, comparative examples) with different steel wire diameters (0.40 mm) and different steel wire specifications and drawing temperature conditions as shown in Table 1 1-4) were prepared, and the following moldability and cutting load were evaluated for each test sample. The evaluation results are shown in Table 1.

表１の線材種７２Ａ、８２Ａは、それぞれカーボン含有率が０．７２％、０．８２％の材質である。加工度とは、パテンティング後のスチールワイヤの直径をＤ０、伸線加工後のスチールワイヤの直径をＤ１として、下記式により算出される数値である。   The wire types 72A and 82A in Table 1 are materials having carbon contents of 0.72% and 0.82%, respectively. The degree of processing is a numerical value calculated by the following equation, where D0 is the diameter of the steel wire after patenting and D1 is the diameter of the steel wire after wire drawing.

加工度＝（（Ｄ０２−Ｄ１２）／Ｄ０２）×１００（％）
加工度の数値が大きい程、伸線加工においてスチールワイヤ母材をより伸ばしてスチールワイヤを製造したことを示す。 Degree of processing = ((D0 2 −D1 2 ) / D0 2 ) × 100 (%)
It shows that the steel wire was manufactured by extending the steel wire base material more in the wire drawing process as the numerical value of the processing degree is larger.

[型付け性]
伸線加工をして試験サンプルを製造した直後（０時間）と製造後１４４時間の２つの時点において、試験サンプルの一端に１ｋｇｆの錘を取付けて、外径１４ｍｍのパイプに試験サンプルを密に巻き上げた状態とし、さらに、反転させて試験サンプルをパイルより巻き出した後で、錘を取外した際に環状になっている試験サンプルの径を測定した。数値が小さい程、型付け性が良好であることを示す。 [Typeability]
Immediately after producing the test sample by drawing (0 hour) and 144 hours after production, a 1 kgf weight is attached to one end of the test sample, and the test sample is densely attached to a pipe having an outer diameter of 14 mm. The test sample was rolled up, further reversed, and after the test sample was unwound from the pile, the diameter of the test sample that was in an annular shape when the weight was removed was measured. The smaller the value, the better the moldability.

[切断荷重]
伸線加工をして試験サンプルを製造した直後（０時間）と製造後２４時間、７２時間、１４４時間の４つの時点において、切断荷重を測定した。表１の変化率とは、試験サンプルを製造した直後（０時間）と製造後１４４時間の２つの時点間での切断荷重の変化率である。 [Cut load]
The cutting load was measured immediately after manufacturing the test sample by wire drawing (0 hour) and at four time points of 24 hours, 72 hours, and 144 hours after manufacturing. The rate of change in Table 1 is the rate of change of the cutting load between two time points immediately after manufacturing the test sample (0 hour) and 144 hours after manufacturing.

Figure 2011196402
Figure 2011196402

表１の結果から、試験サンプル（伸線加工して製造したスチールワイヤ）の保管温度を２５℃にすると、時効硬化が遅滞なく進行して型付け性が低下し、保管温度を１５℃、０℃、マイナス１５℃にすることにより時効硬化の進行を遅らせることができ、型付け性の低下を抑制することが分かる。   From the results in Table 1, when the storage temperature of the test sample (steel wire manufactured by drawing) is 25 ° C., age hardening progresses without delay and the moldability decreases, and the storage temperatures are 15 ° C. and 0 ° C. It can be seen that by setting the temperature to minus 15 ° C., the progress of age hardening can be delayed, and the deterioration of moldability is suppressed.

１ ゴムホース
２ 内面ゴム層
３ａ、３ｂ 補強層
４ 中間ゴム層
５ 外面ゴム層
６ スチールワイヤ母材
７ スチールワイヤ
８ ダイス
９ 編組機
１０ リール
１１ マンドレル DESCRIPTION OF SYMBOLS 1 Rubber hose 2 Inner surface rubber layer 3a, 3b Reinforcement layer 4 Intermediate rubber layer 5 Outer surface rubber layer 6 Steel wire base material 7 Steel wire 8 Die 9 Braiding machine 10 Reel 11 Mandrel

Claims (5)

伸線加工したスチールワイヤを、マンドレルの外周面に積層したホース構成部材の外周面に積層して補強層を形成し、この補強層の外周面にさらにホース構成部材を積層してホース成形体を成形し、次いで、このホース成形体を加硫するゴムホースの製造方法において、スチールワイヤ母材を伸線加工して前記スチールワイヤを製造した直後から前記補強層を形成するまでの間に、スチールワイヤを−１５℃〜１５℃の温度範囲で保管する冷却保管工程を有するゴムホースの製造方法。   A steel wire that has been drawn is laminated on the outer peripheral surface of a hose component laminated on the outer peripheral surface of the mandrel to form a reinforcing layer, and a hose component is further laminated on the outer peripheral surface of the reinforcing layer to form a hose molded body. In the method of manufacturing a rubber hose for forming and then vulcanizing the hose molded body, the steel wire is drawn immediately after the steel wire base material is drawn to the formation of the reinforcing layer. The manufacturing method of the rubber hose which has the cooling storage process which stores this in the temperature range of -15 degreeC-15 degreeC. 前記スチールワイヤを製造した直後から前記補強層を形成するまでに経過した待機時間から、前記冷却保管工程を行なう時間を差し引いた時間が７２時間以下である請求項１に記載のゴムホースの製造方法。   2. The method for producing a rubber hose according to claim 1, wherein a time obtained by subtracting a time during which the cooling storage process is performed from a waiting time elapsed immediately after the steel wire is produced until the reinforcing layer is formed is 72 hours or less. 前記冷却保管工程を、温度管理された閉空間で行なう請求項１または２に記載のゴムホースの製造方法。   The method for manufacturing a rubber hose according to claim 1, wherein the cooling storage step is performed in a temperature-controlled closed space. 前記冷却保管工程を、スチールワイヤを輸送する輸送車両において行なう請求項１〜３のいずれかに記載のゴムホースの製造方法。   The method for manufacturing a rubber hose according to any one of claims 1 to 3, wherein the cooling storage step is performed in a transport vehicle that transports a steel wire. 前記補強層が、スチールワイヤを編組して形成される編組層である請求項１〜４のいずれかに記載のゴムホースの製造方法。







The method for manufacturing a rubber hose according to claim 1, wherein the reinforcing layer is a braided layer formed by braiding a steel wire.







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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102734571A (en) * 2012-07-02 2012-10-17 漯河市利通橡胶有限公司 Compact steel wire braided rubber hose and preparation method thereof
CN110805756A (en) * 2019-10-30 2020-02-18 宣化钢铁集团有限责任公司 High-pressure rubber hose capable of cooling
CN112460343A (en) * 2020-10-30 2021-03-09 山东鲁尔胶管股份有限公司 Steel wire braided hydraulic hose and preparation method thereof

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JPS6448619A (en) * 1987-08-18 1989-02-23 Nippon Steel Corp Method for cooling wire rod for drawing
JPH05156369A (en) * 1991-12-04 1993-06-22 Nippon Steel Corp Manufacture of steel cord
JPH08200560A (en) * 1995-01-25 1996-08-06 Bridgestone Corp Small extention high-pressure hose
JPH10166027A (en) * 1996-12-10 1998-06-23 Yokohama Rubber Co Ltd:The Manufacture of metallic wire for reinforcing high pressure hose, and high pressure hose
JP2000018444A (en) * 1998-07-03 2000-01-18 Bridgestone Corp Medium transferring hose

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Publication number Priority date Publication date Assignee Title
JPS6444208A (en) * 1987-08-13 1989-02-16 Nippon Steel Corp Cooling wire drawing device
JPS6448619A (en) * 1987-08-18 1989-02-23 Nippon Steel Corp Method for cooling wire rod for drawing
JPH05156369A (en) * 1991-12-04 1993-06-22 Nippon Steel Corp Manufacture of steel cord
JPH08200560A (en) * 1995-01-25 1996-08-06 Bridgestone Corp Small extention high-pressure hose
JPH10166027A (en) * 1996-12-10 1998-06-23 Yokohama Rubber Co Ltd:The Manufacture of metallic wire for reinforcing high pressure hose, and high pressure hose
JP2000018444A (en) * 1998-07-03 2000-01-18 Bridgestone Corp Medium transferring hose

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102734571A (en) * 2012-07-02 2012-10-17 漯河市利通橡胶有限公司 Compact steel wire braided rubber hose and preparation method thereof
CN110805756A (en) * 2019-10-30 2020-02-18 宣化钢铁集团有限责任公司 High-pressure rubber hose capable of cooling
CN112460343A (en) * 2020-10-30 2021-03-09 山东鲁尔胶管股份有限公司 Steel wire braided hydraulic hose and preparation method thereof

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