JP2008279657A - Pressure-resistant hose and method and device of manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure-resistant hose where a metal wire for forming an adjacent two metal wire layers is suppressed in being directly contacted with each other, and a method and a device of manufacturing the pressure-resistant hose. <P>SOLUTION: The present invention relates the pressure-resistant hose, and the method and the device of manufacturing the pressure-resistant hose. The pressure-resistant hose is equipped with the plurality of metal wire layers 3, 5 formed on the outer periphery of an inner tube 2 by spirally winding the metal wires and an interference prevention fiber layer 4 which is positioned between the metal wire layer 3 and the metal wire layer 5, and prevents mutual interference of the metal wire layers 3, 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pressure hose, a manufacturing method thereof, and a manufacturing apparatus.

As a pressure hose, one having a plurality of metal wire layers around an inner tube made of rubber or the like is known. In these pressure hoses, an interlayer rubber layer is provided between the metal wire layers to prevent the metal wires forming the metal wire layer from directly contacting each other (Patent Documents 1 and 2).
JP 2004-60747 A Japanese Patent Laid-Open No. 11-315968

  However, in the pressure hose, if the interlayer rubber layer is unvulcanized at the time of manufacture, when the metal wire is wound on the interlayer rubber layer, the metal wire bites into the interlayer rubber layer, and the interlayer rubber layer is The metal wire may be in point contact between one metal wire layer and another metal wire layer adjacent to each other.

  Therefore, when a high-pressure fluid is circulated through the pressure-resistant hose, the metal wires that are in point contact with each other may be strongly rubbed by the internal pressure from the high-pressure fluid and may break.

  Therefore, when manufacturing a pressure-resistant hose having an interlayer rubber layer, it is necessary to vulcanize each time the interlayer rubber layer is formed so that the metal wire does not bite into the interlayer rubber layer.

  The present invention has been made to solve the above problem, and a pressure hose that suppresses direct contact between metal wires forming two adjacent metal wire layers, a method of manufacturing the pressure hose, and manufacturing The purpose is to provide a device.

  The invention according to claim 1 is a pressure hose, wherein the metal wire is positioned between a plurality of metal wire layers formed by spirally winding a metal wire around the outer circumference of the inner tube, and the metal wire layer. And an interference-preventing fiber layer for preventing mutual interference between layers.

  In the pressure hose according to claim 1, after forming an inner metal wire layer among one and other metal wire layers adjacent to each other, a fiber is wound from above to form an interference preventing fiber layer, After the prevention fiber layer is formed, another metal wire layer is formed by further winding a metal wire on the outside thereof. Therefore, when the other metal wire layer is formed, the metal wire does not bite into the interference preventing fiber layer. Therefore, the metal wire point is between one and the other metal wire layers adjacent to each other with the interference preventing fiber layer interposed therebetween. Contact is prevented.

  Therefore, even when a high-pressure fluid is circulated through the pressure-resistant hose, the metal wires constituting the one and other metal wire layers are prevented from being strongly rubbed and broken due to the internal pressure from the high-pressure fluid.

  The invention according to claim 2 is the pressure-resistant hose according to claim 1, further comprising a coating layer covering the outermost metal wire layer.

  In the pressure hose according to claim 2, the outermost metal wire layer is covered with the covering layer and is not exposed. Therefore, it is excellent in safety during use.

  According to a third aspect of the present invention, in the pressure hose manufacturing method, a first metal wire winding step of forming a metal wire layer by spirally winding a metal wire around the outer periphery of the inner tube, and the first metal wire winding An interference preventing fiber layer forming step of forming an interference preventing fiber layer by winding fibers on the surface of the metal wire layer formed in the winding step; and an interference preventing fiber layer formed on the surface of the interference preventing fiber layer forming step. And a second metal wire winding step of forming a metal wire layer by spirally winding a metal wire.

  According to the pressure hose manufacturing method according to claim 3, the pressure-resistant hose according to any one of claims 1 to 3, wherein an interference preventing fiber layer is disposed between one and the other adjacent metal wire layers. A hose can be manufactured effectively.

  In addition, a pressure hose having three or more metal wire layers can be manufactured by repeating the interference preventing fiber layer forming step and the second metal wire winding step.

  Invention of Claim 4 is the pressure | voltage resistant hose manufacturing method of Claim 4, The 1st adhesive agent application process of apply | coating an adhesive agent to the metal wire layer formed at the said 1st metal wire winding process, and A second adhesive application step of applying an adhesive to the metal wire layer formed in the second metal wire winding step, and after applying the adhesive to the metal wire layer in the first adhesive application step, An interference preventing fiber layer forming step is performed.

  In the pressure hose manufacturing method, since the metal wire layer formed in the first metal wire winding step is coated with an adhesive and then the fibers are wound to form the interference preventing fiber layer, the metal wire The layer and the interference preventing fiber layer are firmly fixed. Therefore, when the pressure hose manufactured by the pressure hose manufacturing method is bent, the possibility that the metal wire layer and the interference preventing fiber layer are peeled off is extremely small.

  According to a fifth aspect of the present invention, in the pressure hose manufacturing apparatus, the inner pipe traveling means for traveling the inner pipe along a predetermined direction and the surface of the inner pipe traveling along the direction by the inner pipe traveling means are provided. A wire winding means for forming a first metal wire layer by winding a metal wire; and a metal wire positioned on the downstream side of the wire winding means along the traveling direction of the inner tube and outside the metal wire layer An interference preventing fiber winding means for forming an interference preventing fiber layer by winding interference preventing fibers for preventing interference between each other, and located downstream of the interference preventing fiber winding means along the traveling direction of the inner tube. And an outermost wire winding means for forming an outermost metal wire layer by winding a metal wire around the interference preventing fiber layer.

  In the pressure hose manufacturing apparatus according to claim 5, the metal wire is spirally wound by winding the metal wire with the wire winding means while the inner pipe is running in a predetermined direction by the inner pipe running means. Turned to form the inner metal wire layer. Then, a fiber is spirally wound from above the metal wire layer by the interference preventing fiber winding means, and a metal wire is spirally wound by the outermost layer wire winding means from above to form an outer metal wire. The pressure-resistant hose according to any one of claims 1 to 3, wherein the pressure-resistant hose according to any one of claims 1 to 3 has two or more metal wire layers and one or more interference prevention fiber layers by forming a layer. Can be produced efficiently in one step.

  The invention according to claim 6 is the pressure hose manufacturing apparatus according to claim 5, comprising two or more sets of the wire winding means and the interference preventing fiber winding means, and the outermost layer wire winding means. Is located downstream of the interference preventing fiber winding means in the most downstream set.

  In the pressure hose manufacturing apparatus according to claim 6, two sets of the wire winding means and the interference prevention fiber winding means are disposed, whereby any one of claims 1 to 3 is provided. In the described pressure hose, one having three metal wire layers and two interference preventing fiber layers can be efficiently manufactured in one step.

  Further, if three sets are arranged, a pressure hose having four metal wire layers and three interference preventing fiber layers can be efficiently manufactured in one step.

  A seventh aspect of the present invention is the pressure-resistant hose manufacturing apparatus according to the fifth or sixth aspect, wherein an adhesive is applied between the wire winding means and the interference preventing fiber winding means. Is provided.

  In the pressure hose manufacturing apparatus according to claim 7, when the metal wire is wound by the wire winding means to form the metal wire layer, the adhesive is applied to the metal wire layer by the adhesive applying means. Further, the interference preventing fiber winding means winds the fiber to form an interference preventing fiber layer. Therefore, a pressure hose in which the metal wire layer and the interference preventing fiber layer are firmly fixed is obtained.

  The obtained pressure hose has a very low possibility that the metal wire layer and the interference prevention fiber layer are peeled off by an external force or an internal pressure from the fluid when bent or when a high-pressure fluid flows.

  As described above, according to the present invention, there is provided a pressure hose that suppresses direct contact between metal wires forming two adjacent metal wire layers, a method for manufacturing the pressure hose, and a manufacturing apparatus. The

1. Embodiment 1
As shown in FIG. 1A, the pressure hose 10 according to the first embodiment includes an inner tube 2, a metal wire layer 3 formed by spirally winding a metal wire around the outer periphery of the inner tube 2, and a metal It has a wire layer 5, an interference preventing fiber layer 4 formed between the metal wire layer 3 and the metal wire layer 5, and a coating layer 1 that covers the metal wire layer 5.

  The metal wire layer 3 is formed by winding a metal wire clockwise, and the metal wire layer 5 is formed by winding a metal wire counterclockwise. As described above, the winding directions of the metal wires in the metal wire layers 3 and 5 are opposite to each other, whereby the pressure hose 10 is prevented from being twisted during pressurization. In contrast to FIG. 1, the metal wire layer 3 may be formed by winding the metal wire counterclockwise and the metal wire layer 5 may be formed by winding the metal wire clockwise. The winding pitch of the metal wire may be the same or different in the metal wire layers 3 and 5. Examples of the metal wire include a stainless steel wire and a carbon steel wire.

  The interference preventing fiber layer 4 is formed by winding or braiding various fibers on the surface of the metal wire layer 3. As the fibers used for the interference preventing fiber layer 4, aliphatic polyamide fibers, aromatic polyamide fibers, various polyester fibers, cotton fibers, vinylon fibers and the like are used.

  In the first embodiment, the interference preventing fiber layer 4 is formed by winding the fiber in a left-handed manner. However, the winding direction of the fiber is not limited to the left-handed direction, and may be right-handed.

  In addition, the material of the inner pipe 2 can be arbitrarily selected according to the fluid required to flow through the inside and the flexibility required for the entire pressure-resistant hose 10.

  For example, when the fluid is lubricating oil, the material of the inner tube 2 can be oil-resistant rubber such as chloroprene rubber, nitrile rubber, and acrylic rubber. When the fluid is an aqueous hydraulic oil or ordinary water, various thermoplastic elastomers such as polyamide, polyester, polyurethane, vinyl chloride, and polyolefin can be used.

2. Embodiment 2
As shown in FIG. 1B, the pressure hose 11 according to the first embodiment includes four metal wire layers 3, 5, 7, 9 formed by winding a metal wire around the inner tube 2. , Interference preventing fiber layers 4, 6, 8 inserted between the metal wire layers 3, 5, 7, 9 and a jacket layer 1 covering the metal wire layer 9 which is the outermost metal wire layer. . Here, the interference prevention fiber layer 4 is located between the metal wire layers 3 and 5, the interference prevention fiber layer 6 is located between the metal wire layers 5 and 7, and the interference prevention fiber layer 8 is a metal wire. Located between layers 7 and 9.

  In the present embodiment, the metal wire layers 3 and 7 are formed by winding the metal wire clockwise, and the metal wire layers 5 and 9 are formed by winding the metal wire counterclockwise. The winding direction of the metal wire may be left-handed, and in the metal wire layers 5 and 9, the winding direction of the metal wire may be right-handed. However, if the metal wire layers 3, 5, 7, and 9 are not wound in directions opposite to each other, twisting occurs when the pressure hose 11 is pressurized, which is not preferable.

  The interference prevention fiber layers 4, 6, and 8 are formed by winding the fibers in a left-handed manner, but the winding direction of the fibers may be right-handed. Each of the fiber winding directions may be different.

  The metal wires and fibers are as described in the metal wire layers 3 and 5 and the interference preventing fiber layer 4 in the first embodiment.

3. Embodiment 3
The pressure hose manufacturing apparatus 100 according to the third embodiment is a device for manufacturing the pressure hose 10 according to the first embodiment. The pressure hose manufacturing apparatus 100 according to the third embodiment extends the inner pipe 2 from the upstream toward the downstream along the traveling direction a of the inner pipe 2. The work drum 140 to be sent out, the cooling tank 110 for cooling the inner pipe 2 sent out from the work drum 140, and the metal wire that forms the metal wire layer 3 by winding the metal wire around the inner pipe 2 cooled in the cooling tank 110 A metal wire winding device 150 that is a winding means, an adhesive application device 120 that applies an adhesive to the metal wire layer 3 formed by winding a metal wire by the metal wire winding device 150, and an adhesive application An interference preventing fiber winding device 130, which is an interference preventing fiber winding means for forming an interference preventing fiber layer 4 by winding fibers around the metal wire layer 3 coated with an adhesive in the device 120, and an interference preventing fiber winding. The metal wire layer 5 is formed by winding a metal wire around the cooling tank 111 that cools the inner tube 2 around which fibers are wound in the device 130 and the interference prevention fiber layer 4 formed by the interference prevention fiber winding device 130. A metal wire winding device 151 which is a metal wire winding means to be formed, and a coating layer 1 is formed by applying an adhesive to the surface of the metal wire layer 5 formed by the metal wire winding device 151 to form a pressure resistant hose 10. The adhesive application device 121 and the winding drum 141 that winds the formed pressure hose 10 are provided. The work drum 140 and the take-up drum 141 correspond to the inner pipe traveling means in the present invention.

  As shown in FIGS. 3A and 3B, the metal wire winding devices 150 and 151 and the interference preventing fiber winding device 130 have a donut-like planar shape, and have an axial line as shown by an arrow b. There are provided a face plate 202 that rotates around and 12 bobbins 200 that are erected on the face plate 202 at equal intervals and wound with a metal wire or fiber. At the center of the face plate 202, an opening 202A through which the inner tube 2 passes is opened. However, the rotation directions of the face plate 202 are opposite to each other in the metal wire winding devices 150 and 151 and the interference preventing fiber winding device 130.

  In the metal wire winding devices 150 and 151 and the interference preventing fiber winding device 130, the inner tube 2 travels along the traveling direction a on the axis of the face plate 202 and passes through the opening 202A. At the same time, the face plate 202 rotates in the direction of the arrow b, and the metal wire or fiber supplied from the bobbin 200 is wound to form the metal wire layers 3 and 5 or the interference preventing fiber layer 4.

  Hereinafter, the operation of the pressure hose manufacturing apparatus 100 will be described.

  After the inner pipe 2 sent out from the work drum 140 is cooled to a predetermined temperature in the cooling tank 110, a metal wire is wound in the metal wire winding device 150, thereby forming the metal wire layer 3 on the inner pipe. Is done. Then, an adhesive is applied to the metal wire layer 3 in the adhesive application device 120. After the adhesive is applied to the metal wire layer 3, fibers are wound around the surface of the metal wire layer 3 by the interference preventing fiber winding device 130, thereby forming the interference preventing fiber layer 4. Next, the metal wire is wound in the metal wire winding device 151 to form the metal wire layer 5. Finally, an adhesive is applied in the adhesive application device 121 to form the coating layer 1, thereby forming the pressure hose 10. The pressure hose 10 according to the first embodiment formed in this manner is wound around the winding drum 141.

4). Embodiment 4
As shown in FIG. 2B, the pressure hose manufacturing apparatus 101 according to the fourth embodiment further includes an interference preventing fiber winding device 131 downstream of the adhesive application device 121 in the pressure hose manufacturing apparatus 100 according to the third embodiment. The cooling tank 112, the metal wire winding device 152, the interference preventing fiber winding device 132, the cooling bath 113, and the metal wire winding device 153 are provided. Further, an adhesive application device 122 is disposed between the metal wire winding device 152 and the interference prevention fiber winding device 132, and an adhesive application device 123 is disposed downstream of the metal wire winding device 153. Yes.

  Similarly to the metal wire winding devices 150 and 151 and the interference prevention fiber winding device 130, the metal wire winding devices 152 and 153 and the interference prevention fiber winding devices 131 and 132 have the configuration shown in FIG. .

  Hereinafter, the operation of the pressure hose manufacturing apparatus 101 will be described.

  After the inner pipe 2 sent out from the work drum 140 is cooled to a predetermined temperature in the cooling tank 110, a metal wire is wound in the metal wire winding device 150, thereby forming the metal wire layer 3 on the inner pipe. Is done. Then, an adhesive is applied to the metal wire layer 3 in the adhesive application device 120. After the adhesive is applied to the metal wire layer 3, fibers are wound around the surface of the metal wire layer 3 by the interference preventing fiber winding device 130, thereby forming the interference preventing fiber layer 4. Next, the metal wire is wound by the metal wire winding device 151 to form the metal wire layer 5, and the adhesive is applied to the metal wire layer 5 by the adhesive application device 121. Then, the interference preventing fiber winding device 131 winds the fiber, and the interference preventing fiber layer 6 is formed. After the interference preventing fiber layer 6 is formed, it is cooled to a predetermined temperature in the cooling bath 112, the metal wire is wound in the metal wire winding device 152, the metal wire layer 7 is formed, and the adhesive coating device 122 An adhesive is applied to the metal wire layer 7. Then, the interference preventing fiber winding device 132 winds the fiber, and the interference preventing fiber layer 8 is formed. After the interference preventing fiber layer 8 is formed, it is cooled to a predetermined temperature in the cooling bath 113, the metal wire is wound in the metal wire winding device 153, the metal wire layer 9 is formed, and the adhesive coating device 123 is used. An adhesive is applied to the metal wire layer 9 to form the covering layer 1. The pressure-resistant hose 11 according to the second embodiment formed in this way is wound around the winding drum 141.

FIG. 1 is an explanatory diagram illustrating a configuration of a pressure-resistant hose according to the first and second embodiments. FIG. 2 is an explanatory diagram illustrating a configuration of a pressure hose manufacturing apparatus that manufactures the pressure hose according to the first and second embodiments. 3 is a front view and a side view showing a configuration of a metal wire winding device and a fiber winding device included in the pressure hose manufacturing apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer layer 2 Inner tube 3 Metal wire layer 4 Interference prevention fiber layer 5 Metal wire layer 6 Interference prevention fiber layer 7 Metal wire layer 8 Interference prevention fiber layer 9 Metal wire layer 10 Pressure hose 11 Pressure hose 100 Pressure hose manufacturing apparatus 101 Pressure-resistant hose manufacturing apparatus 110 Cooling tank 111 Cooling layer 112 Cooling tank 113 Cooling tank 120 Adhesive application apparatus 121 Adhesive application apparatus 122 Adhesive application apparatus 123 Adhesive application apparatus 130 Interference prevention fiber winding apparatus 131 Interference prevention fiber winding apparatus 132 Interference-preventing fiber winding device 140 Work drum 141 Winding drum 150 Metal wire winding device 151 Metal wire winding device 152 Metal wire winding device 153 Metal wire winding device 200 Bobbin 202A Opening 202 Face plate

Claims (7)

  A plurality of metal wire layers formed by spirally winding metal wires around the outer circumference of the inner tube, and an interference preventing fiber layer positioned between the metal wire layers and preventing interference between the metal wire layers A pressure-resistant hose characterized by comprising.   The pressure | voltage resistant hose of Claim 1 provided with the coating layer which coat | covers the outermost metal wire layer. A first metal wire winding step of spirally winding a metal wire around the inner tube to form a metal wire layer;
An interference preventing fiber layer forming step of forming an interference preventing fiber layer by winding fibers on the surface of the metal wire layer formed in the first metal wire winding step;
A pressure hose manufacturing method comprising: a second metal wire winding step of forming a metal wire layer by spirally winding a metal wire around the surface of the interference prevention fiber layer formed in the interference prevention fiber layer forming step. An adhesive is applied to the metal wire layer formed in the first metal wire winding step and the first adhesive application step of applying an adhesive to the metal wire layer formed in the first metal wire winding step. Having a second adhesive application step,
The pressure-resistant hose manufacturing method of Claim 3 which implements the said interference prevention fiber layer formation process after apply | coating an adhesive agent to a metal wire layer at a said 1st adhesive agent application process. An inner tube traveling means for traveling the inner tube along a predetermined direction;
Wire winding means for forming a metal wire layer by winding a metal wire around the surface of the inner pipe that runs along the direction by the inner pipe running means;
An interference preventing fiber layer is formed by winding interference preventing fibers that are positioned downstream of the wire winding means along the traveling direction of the inner tube and prevent the metal wires from interfering with each other outside the metal wire layer. Interference preventing fiber winding means;
The outermost layer wire winding is positioned downstream of the interference preventing fiber winding means along the traveling direction of the inner tube, and forms an outermost metal wire layer by winding a metal wire around the interference preventing fiber layer. A pressure hose manufacturing apparatus comprising a turning means.   Two or more sets each including the wire winding means and the interference prevention fiber winding means are provided, and the outermost layer wire winding means is located downstream of the interference prevention fiber winding means in the most downstream set. The pressure hose manufacturing apparatus according to claim 5.   The pressure-resistant hose manufacturing apparatus according to claim 5 or 6, wherein an adhesive application means for applying an adhesive is disposed between the wire winding means and the interference preventing fiber winding means.

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