JP4397005B2 - Manufacturing method of housing - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a rod constituting a fishing rod used for fishing.
[0002]
[Prior art]
The cylindrical rod body constituting the fishing rod is, for example, a fiber reinforced resin obtained by impregnating a synthetic resin into a reinforced fiber such as carbon fiber or glass fiber into a sheet (generally called a “prepreg sheet”). It is manufactured by winding around a material and firing.
[0003]
The fishing rod body is required to have a predetermined mechanical strength as well as sufficient flexibility when a load is applied. Here, in order to maintain the mechanical strength, a certain thickness is required. Instead of simply winding a single prepreg sheet around a core material, several sheets or several kinds of prepreg sheets are laminated. These enclosures are manufactured.
[0004]
[Problems to be solved by the invention]
Generally, the rod body is a tapered taper-shaped tubular body with a diameter decreasing toward the tip side. However, some of the rod bodies are formed so that the degree of taper changes from the middle in the length direction of the rod body.
[0005]
However, in such a case where the degree of taper changes from the middle, when this rod is used as a fishing rod and a load is applied from the tip of the fishing rod, the bending of the portion where the taper changes is different from the other. In some cases, the size of the fishing rod becomes larger than that of the portion, making it impossible to produce the smooth deflection of the fishing rod as a whole. In particular, when manufacturing a casing using a prepreg using glass fiber, because the specific gravity of the glass fiber is large, it is necessary to suppress the thickness of the casing to reduce the weight of the casing, There is also a tendency that the degree of bending from the portion where the taper changes increases.
[0006]
The subject of this invention is providing the manufacturing method of the housing | casing which can produce smooth bending without the bending | flexion in the transition part of a taper becoming unreasonably large.
[0007]
[Means for Solving the Problems]
When manufacturing a casing in which the taper changes in the middle, the inventor does not overlap the portion where the taper changes by using a fiber reinforced resin in which the reinforcing fiber is inclined and obliquely oriented from the axial direction as an auxiliary member. It has been found that if the winding is performed in such a manner, it is possible to suppress an unnecessary degree of bending of the casing at the changed portion of the taper.
[0008]
The method according to the first aspect of the present invention is a method for manufacturing a casing based on such knowledge, and includes the following steps.
◎ Reinforcement fibers are aligned in one direction on a core material that has a second taper portion that is continuous with the first taper portion and the taper side of the first taper portion, and the taper side is larger than the first taper portion. A step of winding a first fiber reinforced resin material impregnated with a synthetic resin.
◎ The outer periphery of the first fiber reinforced resin material wound around the first taper portion of the core material does not overlap the change portion between the first taper portion and the second taper portion of the first fiber reinforced resin material. A step of winding a second fiber reinforced resin material in which reinforcing fibers are aligned obliquely with respect to the axial direction of the material and impregnated with synthetic resin.
◎ winding a tape-shaped fiber reinforced resin material around the outer periphery of the second fiber reinforced resin material;
A step of firing the first fiber reinforced resin material , the second fiber reinforced resin material, and the tape-like fiber reinforced resin material .
[0009]
In this manufacturing method, the first fiber reinforced resin material, which is usually used in the manufacturing method of the casing, is oriented by aligning glass fibers and carbon fibers in the circumferential direction and the axial direction and impregnated with a thermosetting resin. After winding around the outer periphery, the second fiber reinforced resin material is further wound only on the first taper portion for assistance. In the second fiber reinforced resin material, the reinforcing fibers in the second fiber reinforced resin material are oriented obliquely from the axial direction.
[0010]
The change part between the first taper part and the second taper part of the core material becomes the change part of the taper of the manufactured casing as it is, but this change is obtained by winding such a second fiber reinforced resin material. It is possible to suppress the degree of unnecessary bending of the frame at the part. In particular, when manufacturing a casing using a prepreg using glass fibers, it is necessary to suppress the thickness of the casing to reduce the weight of the casing because the specific gravity of the glass fiber is large. Even in this case, the tendency of the degree of bending from the portion where the taper changes to be sufficiently suppressed.
[0011]
Moreover , it is possible to wind the tape-like fiber reinforced resin material around the outer periphery of the first fiber reinforced resin material and the second fiber reinforced resin material while easily applying pressure in the circumferential direction, which makes it easier to manufacture the casing. .
[0012]
The method according to the invention 2 is the method of the invention 1, wherein the taper of the first taper portion of the core is 4/1000 to 7/1000, and the taper of the second taper portion is 8/1000 to 12/1000. is there.
[0013]
Even when such a taper change is present in the housing, an unnatural degree of bending is unlikely to occur in the taper change portion.
The method according to the invention 3 is the method of the invention 1 or 2 , wherein the reinforcing fibers of the second fiber-reinforced resin material are inclined by 2 to 30 degrees from the axial direction of the core material.
[0014]
When the reinforcing fiber of the second fiber reinforced resin is tilted at a predetermined angle, the unnecessary bending of the changed portion of the taper can be suppressed most effectively.
[0015]
Even if the arrangement positions of the first fiber reinforced resin and the second fiber reinforced resin are changed, unnecessary bending of the housing from the taper changing portion can be suppressed.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
(Overview of fishing rod configuration)
As shown in FIG. 1, a fishing rod made of a frame adopting an embodiment of the present invention includes a main rod 1 and a frame unit 2 consisting of a plurality of rods connected to the tip side of the main rod 1. Have.
[0017]
The base rod 1 is a reel formed between the base grip 3 fixed to the end of the base side, the front grip 4 fixed to the tip side of the base grip 3, and the base grip 3 and the front grip 4. 5 and a reel sheet 6 that can be detachably fixed. As will be described in detail later, the marshal rod 1 is a tapered cylindrical member obtained by winding a prepreg obtained by impregnating carbon fiber, glass fiber, titanium fiber or the like with a synthetic resin around a mandrel and firing it. In the vicinity of the front grip 5 and the reel seat 6, the taper changes midway so that the taper side taper becomes larger than the taper side taper. Further, the main rod 1 is provided with a fishing line inlet 7 for introducing the fishing line L from the reel 5 into the main rod 1.
[0018]
On the other hand, the frame unit 2 is a tapered tubular member connected to the tip side of the base rod 1 in a swing-out manner or a parallel-joint manner. Specifically, it is an assembly of a plurality of enclosures formed by sequentially connecting a plurality of enclosures in a swing-out format or a serial connection format. Each casing constituting the casing unit 2 is also formed by winding a prepreg in which carbon fiber, glass fiber or the like is impregnated with a synthetic resin. In addition, as in the case of the main fence 1, a casing whose degree of taper changes in the middle is included as necessary.
[0019]
In this fishing rod, the fishing line L from the reel 5 is introduced into the housing 1 from the fishing line introduction port 7, is sequentially guided to the body on the tip side, and is led out from the top guide at the tip side of the body unit 2. .
[0020]
(Structure and manufacturing method of the housing)
As shown in FIG. 2, the base rod 1 is a tapered cylindrical member, the first layer 14, the second layer 15 partially stacked on the outer periphery of the first layer 14, and the first layer stacked on the outer periphery thereof. It consists of three layers 16.
[0021]
The first layer 14 is configured by laminating a plurality of sheet-like fiber reinforced resin materials (prepreg sheets), and specifically includes first to third prepreg layers 11 to 13. These prepreg layers are obtained by aligning reinforced fibers such as carbon fibers or glass fibers in one direction and impregnating a thermosetting resin. The reinforcing fibers are aligned in the direction, and the second and third prepreg layers 12, 13 are aligned the reinforcing fibers in the axial direction of the main shaft 1. Note that the number of stacked layers can be arbitrarily set according to the design.
[0022]
The second layer 15 is also made of the same prepreg sheet as that of the first layer 14, and the orientation direction of the reinforcing fibers is aligned with an inclination of about 2 to 30 degrees from the axial direction of the base 1. The reinforcing fibers are preferably inclined at 5 to 15 degrees, more preferably at about 5 to 10 degrees. And this 2nd layer 15 is partially laminated | stacked so that it may not overlap with the taper change part only in the base side part of the part in which the taper of the taper taper of the base 1 changes.
[0023]
The third layer 16 is formed by winding a fiber reinforced resin material (prepreg tape) processed into a tape shape in a spiral shape without a gap. The reinforcing fibers are aligned in the circumferential direction of the base rod 1 and oriented.
[0024]
Such Marshal 1 is manufactured as follows.
As shown in FIG. 3, a mold release agent such as wax is applied to the outer periphery of a mandrel (core material) 100, which is a rod-shaped member having a tapered taper formed stepwise, as necessary. This mandrel 100 has a first taper portion Y having a relatively small taper on the heel side (about 4/1000 to 6/1000) and a relatively large taper on the tip side (about 8/1000 to 12/1000). A second taper portion X is provided.
[0025]
First, the first prepreg sheet 101 is wound around such a mandrel 100. The first prepreg sheet 101 forms the first prepreg layer 11, and the reinforcing fibers are oriented in the circumferential direction of the mandrel 100. Further, the second prepreg sheet 102 is wound around the outer periphery thereof. A plurality of the second prepreg sheets 102 are wound as necessary to form the second and third prepreg layers 12 and 13, and the reinforcing fibers are oriented in the axial direction of the mandrel 100.
[0026]
Further, the auxiliary prepreg 103 is partially wound at a position corresponding to the first tapered portion Y on the outer periphery. Specifically, the auxiliary prepreg 103 is disposed so as not to overlap the portion where the first taper portion Y and the second taper portion X change. The auxiliary prepreg 103 constitutes the second layer 15, and the reinforcing fibers are inclined and aligned in a predetermined direction.
[0027]
Thereafter, so that the tape-like prepregs third layer 16 is wound is Do over pressure Luo winding is formed on these outer periphery. Moreover, you may wind the protective tape made from a polypropylene around the outer periphery as needed.
[0028]
After firing the material thus obtained in a furnace, the mandrel 100 is pulled out and the protective tape is peeled off. Then, both ends are trimmed to a desired length, the surface is polished smoothly, and further necessary coating is applied to manufacture the base 1.
[0029]
In such a manufacturing method, the changed portion between the first tapered portion Y and the second tapered portion X of the mandrel 100 becomes the changed portion of the taper of the main shaft 1 manufactured as it is, but the auxiliary prepreg 103 is partially wound. By providing the second layer 15 by turning, it is possible to suppress an unnecessary degree of bending of the casing at the changed portion.
[0030]
In particular, although not limited by the above-described method, when glass fiber is used as the reinforced fiber for each prepreg, the specific gravity of the original steel 1 to be manufactured is reduced in order to reduce the weight of the original steel 1 because the specific gravity of the glass fiber is large. Although it is necessary to suppress the wall thickness, even in this case, the tendency to increase the degree of bending from the portion where the taper changes can be sufficiently suppressed.
[0031]
[Other Embodiments]
(A) When manufacturing a housing, it is not necessary to manufacture using the prepreg raw material which consists of a single reinforcement fiber, You may manufacture combining a carbon fiber prepreg, a glass fiber prepreg, etc. at any time.
(B) Similar effects can be obtained by winding the auxiliary prepreg 103 on a predetermined outer peripheral surface of the mandrel 100 first and then winding the first prepreg sheet 101 and the like sequentially.
(C) In the above-described embodiment, the taper of the housing is changed at one place and consists of only the first taper portion and the second taper portion, but the taper change can be arbitrarily set without being limited to this. For example, a third taper portion may be further provided.
[0032]
Specifically, for example, a straight portion with no taper change is provided on the most heel side, a taper portion of about 2.5 / 1000, a taper portion of about 9/1000, a taper portion of about 10/1000 on the tip side, The present invention may be applied to a changing portion between a taper portion of about 10/1000 on the most tip side and a taper portion of about 9/1000 in front of it, which is set sequentially and the body is easily bent.
[0033]
【The invention's effect】
In the manufacturing method according to the present invention, it is possible to manufacture a casing that can produce a smooth bend without unduly increasing the bending at the taper transition.
[Brief description of the drawings]
FIG. 1 is an overall view of a fishing rod adopting an embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional view of a portion Y in FIG.
FIG. 3 is a view showing a process for manufacturing the former fence 1;
[Explanation of symbols]
1 Marshal 11-13 First-third prepreg layer 14 First layer 15 Second layer 16 Third layer 100 Mandrel

Claims (3)

A method of manufacturing a rod constituting a fishing rod used for fishing,
A reinforcing fiber is drawn in one direction on a core material having a first taper portion whose diameter decreases toward the tip side and a second taper portion that is continuous with the tip side of the first taper portion and has a taper larger than that of the first taper portion. Winding the first fiber reinforced resin material impregnated with the aligned synthetic resin;
The outer periphery of the first fiber reinforced resin material wound around the first taper portion of the core material is not overlapped with the changed portion between the first taper portion and the second taper portion of the first fiber reinforced resin material. a step of winding the second fiber-reinforced resin material made by impregnating the drawn aligned synthetic resin reinforcing fibers in an oblique direction with respect to the axial direction of the core material,
Winding a tape-like fiber reinforced resin material around the outer periphery of the second fiber reinforced resin material ;
And a step of firing the first fiber reinforced resin material , the second fiber reinforced resin material, and the tape-like fiber reinforced resin material .   The method for manufacturing a casing according to claim 1, wherein the taper of the first taper portion of the core member is 4/1000 to 7/1000, and the taper of the second taper portion is 8/1000 to 12/1000. The manufacturing method of the housing according to claim 1 or 2 , wherein the reinforcing fibers of the second fiber-reinforced resin material are inclined by 2 to 30 degrees from the axial direction of the core material.

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