JP2002306028A - Method for producing laminated tube for fishing rod and laminated tube for fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a laminated tube for a fishing rod, with which the laminated tube has a small amount of a resin, lightweight, a high unity of a hollow cylinder part and a solid conical part and improves the environment of a worker in a production process and to obtain the laminated tube for a fishing rod. SOLUTION: This laminated tube 1 for a fishing rod comprises a hollow cylindrical part 10 forming a base part and a solid conical part 20 forming a tip part. The hollow cylindrical part 10 is constituted of an acute tapered part 12 and a moderate tapered part 11 having a double layer structure composed of an inner layer 11A and an outer layer 11B. The inner layer 11A is constituted of prepreg sheets laminated in the circumferential direction of a core metal and reinforcing fibers in the prepreg sheets are orientated in the axial direction and in the circumferential direction. The outer layer 11B, the acute tapered part 12 and the solid conical part 20 are integrally constituted of continuous yarn prepregs arranged in the axial direction of the core metal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a laminated pipe for a fishing rod and a laminated pipe for a fishing rod, and more particularly to a laminated pipe for a fishing rod and a laminated pipe for a fishing rod having a solid conical portion at the tip and a hollow cylindrical portion at the base. It relates to a manufacturing method.

[0002]

2. Description of the Related Art Heretofore, as a single lure rod or a spike rod constituting a joint rod, a fishing rod laminated pipe in which a base portion serving as a hollow cylindrical portion and a tip portion serving as a solid conical portion are integrally provided. The types configured are known.

[0003] Japanese Patent Application Laid-Open No. 8-332002 describes a laminated pipe for a fishing rod of this type. As shown in FIG. 3, the base, which is the hollow cylindrical portion 110 constituting the fishing rod, has a gentle taper tapering from a base end (not shown) toward the distal end 110A. The solid cone portion 120 at the tip has a cylindrical portion 120A that protrudes coaxially from the bottom surface in the axial direction of the cone and in a direction away from the cone, and the diameter of the cylindrical portion 120A is the hollow cylindrical portion. It corresponds to the diameter of the inner circumference of the tip of 110.

Generally, this type of laminated tube 101 is manufactured by the following method. The hollow cylindrical part 110 is manufactured by the following steps. First, a release agent such as fluorine is applied to the outer peripheral surface of a core metal (not shown) having a gentle taper so as to increase in diameter from one end to the other end. Next, a prepreg (not shown), which is obtained by impregnating a reinforcing fiber with a thermosetting synthetic resin as a binder and semi-dried, is wound and laminated in a desired amount on the outer periphery of the core metal on which the release agent is applied.

[0005] Next, a pressure tape is spirally wound on the outer peripheral surface of the wound and laminated prepreg so that both side surfaces of the pressure tape are overlapped with each other. The hollow cylindrical part 110 is manufactured by melting and curing the resin, finally peeling off the pressure tape, removing the core metal, cutting both ends at predetermined positions, and polishing the outer peripheral surface. Is done.

The solid conical portion 120 is manufactured by cutting the outer peripheral surface of a cylindrical body (not shown) made of fiber-reinforced synthetic resin to form the shape of the solid conical portion 120, or an epoxy resin. A reinforcing fiber made of carbon fiber or glass fiber immersed in a thermosetting synthetic resin liquid such as phenolic resin or phenolic resin is drawn into a mold with a substantially conical inner surface, heated and cured, and then pulled out of the mold after curing. It is manufactured by

Finally, a 120 cylindrical portion 120 of a solid conical portion
A is inserted into the hollow cylindrical portion 110 from the distal end portion 110A of the hollow cylindrical portion 110 and is adhered to the hollow cylindrical portion 110, so that the hollow cylindrical portion 110 and the solid conical portion 120 are integrated, and the fishing rod lamination is performed. The tube 101 is manufactured.

In this type of manufacturing method of a laminated pipe for a fishing rod, a bonding step of the solid conical section 120 to the hollow cylindrical section 110 is required. Is peeled off, leading to the destruction of the laminated tube 101. The hollow cylindrical portion 1 to which the cylindrical portion 120A of the solid conical portion 120 is adhered.
The stress at the time of bending concentrates on the portion 10 and is liable to be broken, causing not only the lifting due to the increase in the weight of the rod tip but also the problem that the rod condition is lost. In addition, there has been a problem that cracking occurs if the circumferential reinforcement of this portion is insufficient.

Japanese Patent Publication No. 37-12812 discloses that a yarn made of a reinforcing fiber is wound around the outer periphery of a substantially cylindrical core metal having a gentle taper in the circumferential direction substantially densely, and then the axial direction of the core metal is increased. Until a position separated by a predetermined distance from one end of the cored bar, the excess is passed through a stretchable rubber plate that is immediately immersed in the thermosetting synthetic resin solution in the tank and that adheres to the yarn. Other manufacturing method of arranging a plurality of yarns made of reinforcing fibers from which a natural resin has been removed, heating the thermosetting synthetic resin impregnated into the yarns by heating, and polishing the outer peripheral surface. Is disclosed. Since the tip of the core has a cross section having a predetermined radius as if the rod was cut, the core does not exist before the tip of the core, and is arranged in the axial direction of the core. The yarn enters into the core in the radial direction at the portion, that is, the portion that becomes the solid conical portion, and a step is generated in a portion where the hollow cylindrical portion and the solid conical portion are connected. If this step is removed in the finishing process, the strength of this portion will be significantly reduced.

However, in the method for manufacturing a laminated pipe described in Japanese Patent Publication No. 37-12812, since the yarn is immersed in a solution of a thermosetting synthetic resin and then placed on a cored bar, a large amount of solvent is contained in the laminated pipe. It was contained and became bubbles when cured, and many bubbles remained inside the manufactured laminated tube, and the laminated tube was easily broken.

Further, immediately after the yarn was immersed in the solution of the thermosetting synthetic resin, the excess resin was removed with a rubber plate, but could not be removed sufficiently. The operability was poor because the ratio increased and only a heavy laminated tube was obtained.

Further, since the yarn is immersed in the solution of the thermosetting synthetic resin, a constant tension cannot be applied to each of the yarns one by one, so that the yarns meander up, down, left and right inside the manufactured laminated tube. In other words, the bending rigidity and bending strength are not constant, and the laminated tube is liable to be damaged, and the yarn is trying to be rounded, the thickness is not constant, and the surface of the manufactured laminated tube has irregularities. In addition, the yarn of the outer layer bends, and the flexural rigidity and the flexural strength are reduced and unstable.

In this type of manufacturing method of a laminated pipe for a fishing rod, the thickness of the base end of the laminated pipe is set based on the required bending strength and bending rigidity of the rod, and the base end of the laminated pipe is used as a base. Since it is necessary to determine the basis weight and the number of yarns arranged in the axial direction of the cored bar, the amount of reinforcing fiber in the solid conical portion at the tip increases, making it difficult to obtain a laminated pipe that draws a flexible deflection curve, Was thin at the base where the diameter of the core was large, and increased at the tip where the diameter of the core was small. For this reason, the outer diameter of the solid conical portion at the distal end becomes unnecessarily thick and heavy, and a large amount of material is polished and discarded, resulting in a rod having a very large weight and poor operability.

In the method of manufacturing a laminated tube described in Japanese Patent Publication No. 37-12812, when a prepreg is used instead of a yarn wound in the circumferential direction, the resin impregnated in the wound prepreg becomes a solution. There is also a problem that a problem occurs that the reinforcing fiber in the prepreg is dissolved by being dissolved by the solvent therein.

[0015]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a fishing rod which has a small amount of resin, is lightweight, has a high sense of unity between a hollow cylindrical portion and a solid conical portion, and improves the environment of an operator in a manufacturing process. It is an object of the present invention to provide a method for manufacturing a laminated pipe for fishing and a laminated pipe for fishing rods.

[0016]

In order to achieve the above object, a method of manufacturing a laminated pipe for a fishing rod according to the present invention comprises the steps of:
A high-strength, high-elasticity reinforcing fiber 13 is wound at least in the circumferential direction of the core metal 2 around a gentle taper portion 2B on the outer periphery of the core metal 2 in which D is formed into a conical shape with a sharp taper 2A, and the outer periphery of the wound layer 11A A plurality of high-strength and high-elasticity reinforcing fiber bundles 14 which are impregnated with synthetic resin in the axial direction of the metal core 2 from the base 2 to the end of the tip 2D and are semi-dried to form an axial fiber layer 11B. Then, a pressure tape is wound around the outer periphery of the axial fiber layer 11B and cured by heating. Then, the pressure tape is removed, and the cored bar 2 is de-centered for finishing.

The laminated laminated tube for fishing 1 according to the present invention is a laminated laminated tube for fishing rod 1 in which a hollow cylindrical portion 10 at the base and a solid conical portion 20 at the distal end are integrally formed. The circumference 11A is formed of a wrapping layer of a prepreg sheet 13 or a prepreg tape in which high-strength and high-elasticity reinforcing fibers are oriented in a circumferential direction and an axial direction, and has an outer periphery 11B of the hollow cylindrical portion and a solid cone portion 20 at the distal end. Is composed of a high-strength and high-elasticity reinforcing fiber resin layer oriented in the axial direction from the base end to the distal end 1A.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A laminated pipe 1 for a fishing rod and a method for manufacturing the laminated pipe 1 for a fishing rod according to an embodiment of the present invention will be described with reference to FIGS. The fishing-tube laminated tube 1 constitutes a single lure rod, and as shown in FIG. 1, is constituted by a hollow cylindrical portion 10 constituting a base portion and a solid conical portion 20 constituting a distal end portion. The hollow cylindrical portion 10
The laminated pipe has a gentle taper portion 11 having a smaller diameter from a base end (not shown) toward the distal end 1A, and a portion closer to the distal end of the laminated tube than one end of the smaller diameter gentle taper portion 11 is laminated. The tube has a steep taper portion 12 having a smaller diameter from a base end (not shown) toward the distal end 1A. A portion of the hollow cylindrical portion 10 constituting the fishing laminated tube 1 from one end of the tapered portion 12 having a small diameter to the tip 1A of the laminated tube is constituted by a conical solid conical portion 20. . Therefore, the solid conical portion 20 is formed integrally with the sharply tapered portion 12 of the hollow cylindrical portion 10, and the sharply tapered portion 12 is formed integrally with the gentle tapered portion 11.

The gently tapered portion 11 of the hollow cylindrical portion 10 is
1A and an outer layer 11B. Inside
The prepreg sheet 13 (FIG. 2) is wound around the layer 11A.
It is constituted by that. Prepreg sheet 13
Uses a prepreg sheet with carbon fiber
The two layers are wound with two plies that are lined with mucross.
It is constituted by that. Specifically, prepreg
Seat 13 is backed with 03 glass scrim cloth
Trading card 30 consisting of beaten trading card 3053S-05
53S-0503 is used. Prepreg sheet 1
All of the carbon fibers in 3 are directed in the axial direction of the laminated fishing tube 1.
are doing. 03 Fiberglass constituting scrim cloth
Are glass fiber oriented in the axial direction and gas oriented in the circumferential direction.
It is formed by weaving with lath fibers. Trading Card 3053S
-05 means that the carbon fiber weight is 55 g / m ², Resin amount is 30
WT%, 03 glass scrim cloth is glass fiber
Fiber weight is 24g / m², The resin amount is 31.4 WT%
The total weight of the entire trading card 3053S-0503 is 11
3.6 g / m²It is. Trading card for prepreg sheet 13
3053S-05, 03 Thermosetting for glass scrim cloth
Impregnated with epoxy resin as a synthetic resin
I'm making it. The glass fibers in the prepreg sheet 13
It corresponds to a high-strength, high-elasticity reinforcing fiber wound in the direction.

The outer layer 11B is formed by directing a yarn prepreg 14 made of an epoxy resin as a thermosetting synthetic resin and a carbon fiber bundle in the axial direction of the fishing rod laminated tube 1. More specifically, 32 yarn prepregs 14 obtained by impregnating epoxy resin into semi-dried Torayca T-700S-24 ton carbon fiber 3K in which 3000 carbon fibers each having a diameter of 7 microns are bundled together are used. , Outer layer 11
B is configured. The yarn prepreg 14 has a yarn size of 3K, a fiber weight of 0.198 g / m, a resin amount of 24 WT%, a prepreg weight of 0.261 g / m, a fiber volume of 0.110 m ³ / m, and a resin volume of 0.050 m. ³
/ M, the volume of the yarn prepreg is 0.160 m ³ / m,
Fiber volume ratio is 68.6%, elastic modulus is 15,873 kg
/ Mm ² . After the yarn prepreg 14 constituting the outer layer 11B is disposed, the yarn is pressurized and heated to cure the thermosetting synthetic resin impregnated in the prepreg sheet 13 and the yarn prepreg 14, and the outer layer 11B and the inner layer 11 are cured.
A hollow cylindrical portion 10 having a two-layer structure made of A is formed.

Each of the 32 yarn prepregs 14 axially arranged and used for the outer layer 11B is
Portions other than the portion used for B are used as the sharply tapered portion 12 and the solid conical portion 20 of the hollow cylindrical portion 10. That is, a part of one yarn prepreg 14 is used to form the outer layer 11B of the gentle taper portion 11, and a portion adjacent to the portion used for the outer layer 11B on the distal end side forms the sharp taper portion 12. The portion adjacent to the tip side of the portion used for the steep taper portion 12 is used for the solid conical portion 20. The solid conical portion 20 and the sharply tapered portion 12 of the hollow cylindrical portion 10 are
Only the yarn prepreg 14 used in 1B is used.

The total length of the manufactured laminated fishing tube 1 is 180
0 mm, the inner diameter of the proximal end is 6.500 mm, the outer diameter is 7.210 mm, and the diameter of the cross section in the radial direction of the laminated tube, which is defined by the surface formed by the boundary between the inner layer 11A and the outer layer 11B, that is, , The intermediate diameter is 6.743 mm. The inner diameter of the portion of the sharp taper portion 12 connected to the solid conical portion 20 is 0.400 mm. The weight of the manufactured laminated tube for fishing rod is 17.7 g, and the weight, that is, the moment is 13897 g · mm.

The core metal 2 used in the method of manufacturing the fishing laminated tube 1 has a substantially rod shape, and is composed of a tip-side steep taper portion 2A, a base-side gentle taper portion 2B, and a base-side steep taper portion 2C. Have been. The distal-side steep taper portion 2A and the base-side steep taper portion 2C have a conical shape. Tip side sharp taper part 2
The distal end of A forms the distal end 2D of the core 2, and the distal end of the proximal-side steep taper portion forms the proximal end 2E of the core 2. The outer diameter of the core 2 is φ0.4 mm at the tip 2D, φ1.9 mm at a position 50 mm from the tip, and 1500 mm at the position from the tip.
, That is, the position where the base side gentle taper portion 2B and the base side sharp taper portion 2C are connected, the diameter is 6.5 mm.

In manufacturing the fishing laminated tube 1, first,
A release agent made of fluorine or the like is applied to the entire outer peripheral surface of the cored bar 2. Next, the trading card 3053S is attached to the base side gentle taper portion 2B.
Prepreg sheet 13 obtained by cutting -0503 into trapezoid shape
Is wound around the cored bar 2 in the circumferential direction. When winding the prepreg sheet 13 around the core 2, the carbon fibers in the prepreg sheet 13 are arranged so as to be directed in the axial direction of the core 2.

Next, the number and basis weight of the yarn prepreg 14 which is disposed on the cored bar 2 around which the prepreg sheet 13 is wound and which forms the outer layer 11 B of the gentle taper portion 11, the sharp taper portion 12, and the solid conical portion 20. decide. Yarn prepreg 14
Is determined based on the bending stiffness and bending strength required for the manufactured laminated pipe for fishing 1 to determine the outer diameter of the portion of the solid conical portion 20 connected to the sharply tapered portion 12. It is determined from the cross-sectional area in the radial direction with the machining allowance added to the outer diameter. In the manufacturing method of the fishing laminated tube 1 according to the present embodiment, the number is 32 and the yarn prepreg 14 to be used is used.
Is a 24 WT thermosetting synthetic resin composed of Torayca T-700S-24 ton carbon fiber 3K and epoxy resin.
%.

The 32 yarn prepregs 14 are arranged at regular intervals in the circumferential direction of the cored bar 2 on which the prepreg sheet 13 is wound and oriented in the axial direction of the cored bar 2. The yarn prepreg 14 is disposed in a direction from the position where the base-side steep taper portion and the base-side gentle taper portion of the core 2 are connected to the direction of the distal-side steep taper 2A of the core 2, It is arranged before the tip of the tip-side steep taper portion 2A, that is, to a predetermined position separated from the tip of the cored bar 2 in the axial direction.

Next, a pressure tape is spirally wound from above the arranged yarn prepreg 14 such that both side surfaces of the pressure tape overlap. Then, the prepreg sheet 13 and the yarn prepreg 14 are melted by being suspended in a heating furnace and heated to be further cured. The outer diameter of one end of the steep taper portion 12 connected to the solid conical portion 20 at this stage is 2.584 mm, and the solid conical portion 20 has an outer diameter of 2.584 mm.
The outer diameter of one end connected to the sharp taper portion 12 is 2.
55 mm, and the difference in outer diameter is 0.034 mm. The steep taper portion 12 and the solid cone are coaxial with each other, and are formed in a radially symmetrical positional relationship with respect to the axis in the radial direction of the fishing laminated tube 1. Is the value of the step, and the step is 0.017 mm.

Finally, the pressure tape is peeled off, the cored bar 2 is removed, the both ends of the laminated tube are cut at predetermined positions, and the outer peripheral surface is polished to obtain a desired shape of the laminated laminated tube 1. .

Since the yarn prepreg 14 is arranged in the axial direction to form the outer layer 11B of the gentle taper portion 11, the sharp taper portion 12, and the solid conical portion 20, the yarn prepreg 1
It is possible to control the amount of the thermosetting synthetic resin constituting 4 to be uniform in the yarn prepreg 14, and it is possible to arbitrarily control the amount of the resin to a low value such as 20 to 35%. For this reason, the rod can be significantly reduced in weight. Further, since the dry state of the yarn prepreg 14 can be easily controlled, the remaining amount of the solvent in the yarn prepreg 14 can be reduced to 1.5% or less, and the amount of the solvent brought into the fishing laminated tube 1 can be extremely reduced. And the strength of the laminated fishing tube 1 can be stabilized and improved.

The yarn 1 in the yarn prepreg 14
The tension of each book can be easily controlled, the yarns arranged on the outer periphery of the cored bar 2 are not disturbed, and the bending rigidity and the bending strength can be stabilized and improved.

Since the yarn prepreg 14 is in a semi-dry state and has almost no solvent, even if a prepreg sheet, a prepreg cloth or the like is previously laminated on the cored bar 2 and the yarn prepreg 14 is disposed thereon, the prepreg sheet 1
The reinforcing fibers in 3 do not disperse. For this reason, the degree of freedom in design can be improved. In addition, since the yarn can be impregnated with resin in advance and the yarn prepreg 14 can be manufactured in a well-ventilated room different from the factory where the fishing laminated tube 1 is manufactured, There is no need to provide a tank for the thermosetting synthetic resin and the solvent, and the working environment can be improved.

Further, since the thickness of the prepreg can be made uniform, the surface of the prepreg wound around the cored bar 2 can be prevented from having irregularities. For this reason, the fiber arrangement of the yarn prepreg 14, which is disposed on the prepreg and forms the outer layer 11B, is stabilized, and the quality can be improved.

The basis weight and the number of the yarn prepregs 14 are determined based on the bending rigidity and the bending strength required for the manufactured laminated fishing pipe 1, based on the steep taper portion 12 of the solid conical portion 20.
The outer diameter of the portion connected to the outer diameter is determined, and can be determined from the cross-sectional area determined by the outer diameter. Therefore, when performing the finishing processing, the yarn prepreg 14 constituting the tip of the fishing laminated pipe 1 The loss of polishing and discarding such portions can be greatly reduced.

The inner diameter of the outer layer 11B is determined by the diameter of the base metal core 2 and the thickness of the prepreg sheet 13 laminated in advance to form the inner layer 11A, so that the outer diameter of the outer layer 11B can be calculated. For this reason, the prepreg sheet 13 having various elastic moduli and strengths different from the yarn prepreg 14 can be used as the inner layer, and the degree of freedom of design is remarkably improved, a large weight reduction is achieved, and there is no weight and excellent operability. You can get a rod.

In addition, since a prepreg tape alone or a bonding material to a prepreg sheet can be used as the circumferential reinforcing material, the thickness of the laminated tube can be stabilized, and the quality can be stabilized and improved.

The gentle taper portion 11 has a two-layer structure having carbon fiber / glass fiber in the inner layer and carbon fiber in the outer layer. The sharp taper portion 12 and the solid conical portion 20 have the glass fiber containing carbon fiber. Therefore, it is possible to obtain a rod that bends smoothly and has a better tone.

Further, since the gently tapered portion 11 of the hollow cylindrical portion 10 has a structure in which glass fiber and carbon fiber are mixed, an intermediate elastic modulus between glass and carbon can be obtained, and a light rod can be obtained. . In addition, by mixing and blending a material different from the elastic modulus of the carbon fiber, such as glass fiber, into the gentle taper portion 11, the elastic modulus of the gentle taper portion 11 can be arbitrarily obtained by adjusting the elastic modulus according to the compounding ratio. it can.

Further, by setting the outer diameter of the tip of the core metal 2 to 0.4 mm or less, the step generated at the boundary between the solid conical portion 20 and the hollow cylindrical portion 10 can be extremely reduced, and the polishing in the finishing process can be performed. Breakage due to later fiber cutting or the like can be prevented.

Next, in order to clarify the effects of the laminated pipe for a fishing rod 1 according to the present embodiment, a conventional unillustrated conventional bending rod having the same bending rigidity and bending strength as the laminated pipe for a fishing rod 1 according to the present embodiment. The laminated tube for fishing rods is
It was manufactured based on the manufacturing method described in Japanese Patent No. 12812 and compared.

The conventional laminated pipe for fishing rods is a single lure rod, and has a configuration similar to that of the laminated pipe for fishing rods 1 according to the present embodiment, and is composed of a solid conical portion and a hollow cylindrical portion. The cylindrical portion has a gentle taper portion and a sharp taper portion.
Further, the gentle taper has a two-layer structure including an outer layer and an inner layer. However, the material used for the inner layer of the solid cone portion, the sharp taper portion of the hollow cylindrical portion, the gentle taper portion, and the outer layer is
It differs from the fishing rod laminated tube 1 according to the present embodiment.

The inner layer is made of a carbon fiber yarn, more specifically, a Torayca T-700S-24 ton carbon fiber 3K, which is a bundle of 3000 carbon fibers having a diameter of 7 microns, bundled in the circumferential direction. The yarn is turned into a spiral shape so that both side surfaces of the yarn are in contact with each other. In the outer layer, 36 yarns identical to the yarns used in the inner layer are immersed in an epoxy resin solution, and are placed on the yarn constituting the inner layer at equal intervals in the circumferential direction in the axial direction of the fishing rod laminated tube. It is arranged to be oriented to. After the yarn constituting the outer layer is disposed, the yarn is heated, and the epoxy resin impregnated in the yarn is cured to form a hollow cylindrical portion having a two-layer structure including an outer layer and an inner layer.

The 36 yarns immersed in the epoxy resin solution and used for the outer layer are also used for the steep taper portion and the solid conical portion of the hollow cylindrical portion, respectively, as in this embodiment. After being placed, it is heated and the epoxy resin impregnated in the yarn is cured to form a sharply tapered portion and a solid conical portion.

The total length of the fishing rod laminated tube is 1800 mm, the outer diameter of the base end is φ8.734 mm, and the inner diameter is 8.00.
0. The inner diameter of the portion of the steep taper that is connected to the solid cone is 0.800 mm. The weight of the laminated tube for fishing rods is 24.0 g, and the weight, that is, the moment, is 19708 g · mm.

The method of manufacturing the conventional laminated pipe for fishing rods to be compared is slightly different from the method of producing the laminated pipe for fishing rods 1 according to the present embodiment. Specifically, the core metal was wound not in the prepreg sheet, but in a spiral shape in the circumferential direction, and the side surfaces of the yarn were in contact with each other, and impregnated with a thermosetting synthetic resin instead of the yarn prepreg. The method differs from the method of manufacturing a laminated tube for a fishing rod according to the present embodiment in that the yarn is arranged in the axial direction of the cored bar. The yarn is the same as the yarn of the yarn prepreg in the present embodiment,
Yarns state impregnated with a thermosetting synthetic resin, 50 wt% resin content, weight 0.396 g / m, the resin volume of 0.158 m ³ / m, the volume of the yarn 0.268m ³ /
m, fiber volume ratio is 41.0%, elastic modulus is 9,487k
g / mm ² .

The basis weight and number of yarns were determined based on the values of the bending strength and the bending stiffness of the laminated pipe for fishing rods according to the present embodiment. In the conventional method of manufacturing a laminated pipe for fishing rods, the number was 36, the basis weight was 0.198 g / m, and the yarn to be used was determined to be Torayca T-700S-24 ton carbon fiber 3K.

Also, the shape of the core metal is different. The metal core has a substantially rod shape, and has a gentle taper whose diameter decreases from one end to the other end. One end forms the base end of the core, and the other end forms the tip of the core. The outer diameter of the core is 0.8m at the tip
m, the distance from the distal end is 1500 mm, that is, φ8.0 mm at the proximal end position. Except for these, the method is the same as that of the method of manufacturing the fishing-tube laminated tube 1 according to the present embodiment.

Further, in the conventional method for manufacturing a laminated pipe for fishing rods to be compared, the outer diameter of the tip of the sharp taper portion before finishing is 3.595 mm, and the outer diameter of the solid conical portion is less than that of the sharp taper portion. The outer diameter of the part connected to the tip is 3.50
5 mm. Therefore, the difference in the outer diameter is 0.090 mm, and the value of the step obtained by dividing the difference in the outer diameter by 2 is 0.045 mm.

When comparing the laminated pipe for a fishing rod 1 according to the present embodiment with the laminated pipe for a conventional fishing rod, the weight of the laminated pipe for a fishing rod according to the present embodiment is 73.8% of the laminated pipe for a conventional fishing rod. And lighter. Further, the outer diameter of the base end is reduced to 82.5%, and the moment is 70.5%.
It can be seen that the commercial value has been significantly improved. The step generated at the portion of the solid conical portion connected to the tip of the steep taper portion is significantly reduced to 35.8%, so that the hollow cylindrical portion is not damaged and broken by polishing in the finishing process. It can be seen that the quality is significantly improved.

The method for manufacturing a laminated pipe for a fishing rod and the laminated pipe for a fishing rod according to the present invention are not limited to the above-described embodiment.
Various modifications and improvements are possible within the scope described in the claims. For example, in the present embodiment, carbon fibers and glass fibers are used as the high-strength and high-elasticity reinforcing fibers arranged in the axial direction or wound in the circumferential direction, but the carbon fibers have low elasticity, medium elasticity, Any of high elasticity,
Organic fibers such as Kevlar and metal fibers such as boron and amorphous may be used. One of these may be used alone, or two or more types of fibers may be arranged in an overlapping manner,
They may be arranged in parallel. Therefore, the prepreg sheet may be a one-way aligned sheet, an orthogonal sheet, a laminated sheet, a prepreg sheet composed of only glass scrim cloth, or a woven fabric. Further, the shape is not limited to a sheet, and a tape-shaped material may be spirally wound so that both side surfaces overlap.

In this embodiment, an epoxy resin is used as the thermosetting synthetic resin, but an unsaturated polyester resin, a phenol resin or the like may be used.

The amount of resin of the yarn prepreg was 24 W
Although it was T%, it may be 35% WT or less, and preferably 20 to 30 WT%.

If a yarn prepreg is used for the outer layer, a prepreg sheet may not be used for the inner layer. For example, a yarn may be used for the inner layer.

[0053]

According to the method for manufacturing a laminated pipe for a fishing rod according to the first aspect of the present invention, the synthetic resin is impregnated in the axial direction of the core metal from the base of the outer periphery of the wound layer to the tip of the wound layer and is semi-dried. Since a plurality of high-strength and high-elasticity reinforcing fiber bundles are arranged to form an axial fiber layer, the amount of the thermosetting synthetic resin constituting the high-strength and high-elasticity reinforcing fiber bundles is impregnated with the synthetic resin. It becomes possible to control the uniformity in the semi-dried high-strength and high-elasticity reinforcing fiber bundle, and the resin amount can be arbitrarily controlled to a low value such as 20 to 35%. Therefore, the weight of the laminated pipe for fishing rods can be significantly reduced. In addition, since the dry state of the high-strength and high-elasticity reinforcing fiber bundle impregnated with the synthetic resin and semi-dried can be easily controlled, the high-strength and high-elasticity reinforcing fiber bundle impregnated with the synthetic resin and semi-dried can be used. The remaining amount of the solvent can be reduced, the amount of the solvent brought into the fishing rod laminated tube can be extremely reduced, and the strength and the strength of the fishing rod laminated tube can be stabilized and improved.

Further, it is easy to control the tension of each yarn in the high-strength and high-elasticity reinforcing fiber bundle impregnated with the synthetic resin and semi-dried, and the disturbance of the yarn arranged on the outer periphery of the core is eliminated, and the fishing rod is removed. Stabilization and improvement of the bending rigidity and bending strength of the laminated pipe for use.

Also, since the high-strength and high-elasticity reinforcing fiber bundle impregnated with the synthetic resin and semi-dried has almost no solvent, a prepreg sheet, a prepreg cloth, etc. are laminated on the core metal in advance and synthesized thereon. Even if a high-strength and high-elasticity reinforcing fiber bundle impregnated with resin and semi-dried is arranged, the reinforcing fibers in the prepreg sheet do not disperse. For this reason, the degree of freedom in design can be improved. Also, in a well-ventilated room separate from the factory that manufactures laminated pipes for fishing rods,
A high-strength, high-elasticity reinforcing fiber bundle that has been impregnated with a resin and impregnated with a synthetic resin in advance and semi-dried can be manufactured in advance. It is not necessary to place a tank, and the working environment can be improved.

Further, since a prepreg sheet, prepreg tape, prepreg cloth tape, or the like can be used as the circumferential reinforcing material of the inner layer, the fluff of fibers is eliminated, and the working environment can be improved. Further, since the thickness of the prepreg can be made uniform, it is possible to prevent the prepreg surface wound around the core metal from having irregularities. For this reason, the fiber arrangement of the high-strength and high-elasticity reinforcing fiber bundle, which is placed on the prepreg and impregnated with a synthetic resin forming an outer layer and semi-dried, can be stabilized, and the quality can be improved.

The inner diameter of the outer layer is determined by the diameter of the base metal core and the thickness of the prepreg sheet laminated in advance to form the inner layer, so that the outer diameter of the outer layer can be calculated. For this reason, a prepreg sheet having various elastic moduli and strengths different from a high-strength and high-elasticity reinforcing fiber bundle impregnated with a synthetic resin and semi-dried can be used as an inner layer, and the degree of freedom in design is greatly improved. Thus, it is possible to obtain a fishing-tube laminated tube which can achieve a large weight reduction, has no weight and is excellent in operability.

Further, since a prepreg tape alone or a bonding material to a prepreg sheet can be used as the circumferential reinforcing material, the thickness of the laminated tube can be stabilized, and the quality can be stabilized and improved.

According to the laminated pipe for a fishing rod according to the second aspect,
The inner circumference of the hollow cylindrical portion is formed of a wound layer of a prepreg sheet or prepreg tape in which high-strength and high-elasticity reinforcing fibers are oriented in a circumferential direction and an axial direction. , Because it consists of a high-strength, high-elasticity reinforcing fiber resin layer oriented in the axial direction from the base end to the tip end, the thermosetting synthetic resin of the yarn prepreg constituting the high-strength, high-elasticity reinforcing fiber resin layer The amount can be controlled to be uniform in the yarn prepreg, and the resin amount can be arbitrarily controlled to a low value such as 20 to 35%. For this reason, the laminated pipe for fishing rods can be significantly reduced in weight. In addition, since the dried state of the yarn prepreg can be easily controlled, the amount of the solvent remaining in the yarn prepreg can be reduced, and the amount of the solvent brought into the fishing rod laminated tube can be extremely reduced, and the strength can be stabilized. An improved fishing rod laminated tube can be obtained.

Further, the tension of each of the yarns in the yarn prepreg is accurately controlled, the yarn disposed around the core metal is not disturbed, and the bending rigidity and the bending strength are stabilized and improved. Can be a tube.

Since the yarn prepreg is in a semi-dry state and has almost no solvent, even if a prepreg sheet, a prepreg cloth, or the like is previously laminated on a cored bar, and the yarn prepreg is placed thereon, the reinforcing fibers in the prepreg sheet still remain. I can't. For this reason, it is possible to obtain a fishing-tube laminated tube with improved design flexibility. In addition, in a well-ventilated room separate from the factory where the laminated pipes for fishing rods are manufactured, yarn can be impregnated with resin in advance to produce yarn prepregs. There is no need to provide a tank of a synthetic resin and a solvent, and the laminated pipe for fishing rods can be manufactured in a state where the working environment is improved.

Since the fibers in the axial direction are oriented in the inner layer, the weight and number of yarn prepregs in the outer layer can be determined by the cross-sectional area determined by the outer diameter of the portion connected to the steep taper portion of the solid conical portion. The weight and the number of the yarn prepregs can be reduced, and the bending rigidity and the bending strength required for a thin laminated tube that is lightweight and has no feeling of holding can be obtained.

The inner periphery of the hollow cylindrical portion is formed of a prepreg sheet or a prepreg tape wound layer in which high strength and high elasticity reinforcing fibers are oriented in the circumferential direction and the axial direction.
In the manufacturing process, fluffing of the fibers is eliminated, and a laminated tube for fishing rods manufactured in a state where the working environment is improved can be obtained. Further, since the thickness of the prepreg can be made uniform, it is possible to prevent the prepreg surface wound around the core metal from having irregularities.
Therefore, the fiber arrangement of the yarn prepreg, which is disposed on the prepreg and forms the outer layer, is stable, and a laminated pipe for a fishing rod with improved quality can be obtained.

The inner diameter of the outer layer is set by the diameter of the base metal core and the thickness of the prepreg sheet laminated in advance to form the inner layer, so that the outer diameter of the outer layer can be calculated. For this reason, prepreg sheets having various elastic moduli and strengths different from yarn prepregs can be used as the inner layer, and the degree of freedom of design is remarkably improved, large weight reduction is achieved, and there is no weight and excellent operability. It can be a laminated tube for a fishing rod.

Further, since a prepreg tape alone or a material bonded to a prepreg sheet can be used as the circumferential direction reinforcing material, a laminated pipe for fishing rods having a stable thickness and a stable and improved quality can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing the vicinity of a distal end of a laminated tube for a fishing rod according to an embodiment of the present invention.

FIG. 2 is a schematic view showing a core metal, a prepreg sheet, and a yarn prepreg used in the method of manufacturing a laminated pipe for a fishing rod according to the embodiment of the present invention.

FIG. 3 is a cross-sectional view showing the vicinity of the tip of a conventional laminated tube for fishing rods.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Laminated pipe for fishing rods 1A Tip 2 Core 2A Tip side steep taper part 2B Base part gentle taper part 2D Tip 10 Hollow cylindrical part 11A Inner layer 11B Outer layer 13 Prepreg sheet 14 Yarn prepreg 20 Solid cone part

 ──────────────────────────────────────────────────続 き Continued on front page F-term (reference) 2B019 AA05 AB12 AC00

Claims (2)

[Claims] 1. A high-strength, high-elasticity reinforcing fiber is wound at least in the circumferential direction of a core metal around a gentle taper portion on the outer circumference of a core metal having a sharply tapered conical tip. A plurality of semi-dried high-strength and high-elasticity reinforcing fiber bundles are impregnated with a synthetic resin in the axial direction of the metal core from the base to the tip thereof to form an axial fiber layer, and the axial fibers are formed. A method for manufacturing a laminated pipe for a fishing rod, comprising: winding a pressure tape around an outer periphery of a layer; heating and curing the layer; removing the pressure tape; 2. A laminated tube for a fishing rod in which a hollow cylindrical portion of a base and a solid conical portion of a distal end portion are integrally formed, wherein the inner periphery of the hollow cylindrical portion has high strength in a circumferential direction and an axial direction.
It is composed of a wound layer of a prepreg sheet or a prepreg tape in which highly elastic reinforcing fibers are oriented, and the outer periphery of the hollow cylindrical portion and the solid conical portion at the distal end are formed in a high direction oriented in an axial direction from a base end to a front end. A laminated pipe for a fishing rod, comprising a high-strength and high-elasticity reinforcing fiber resin layer.