JP2003070385A - Method for producing fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a small-diameter fishing rod enabling smooth motion of a fishing line in the rod body. SOLUTION: The production method comprises a step to spirally wind a releasing tape 51 around a prescribed core material 50 having tapered form in a manner successively overlapping the tape at the butt end side of the core material to form a laminate, a step to wind a prepreg material 52 around the wound releasing tape 51, a step to bake the prepreg material 52 in an oven, a step to remove the core material 50 and release the releasing tape 51 and a step to apply a water-repelling coating material on the inner surface of the prepreg material 52 after the removal of the core.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rod body constituting a fishing rod, and more particularly to a method for manufacturing a rod body made of a prepreg material obtained by impregnating reinforcing fibers such as carbon fibers and glass fibers with a synthetic resin.

[0002]

2. Description of the Related Art The rod body of a fishing rod used for fishing is generally
Manufactured by impregnating a reinforcing fiber called prepreg with a synthetic resin such as epoxy resin and processing it into a sheet or tape, winding the prepreg material around a core, and firing this.
The rod body manufactured from such a prepreg material is light, has excellent physical strength, and sufficiently exhibits the characteristics required for a fishing rod.

Among the fishing rods having such a rod body, there is a type of so-called centering rod in which a fishing line is inserted through the inside of the rod body. As a rod body for such a fishing rod, a rod body in which a fishing line support projection is continuously formed in a spiral shape continuously on the inner peripheral surface of the fishing line passage inside the rod body is often used. By forming the fishing line support protrusions on the inner peripheral surface of the rod body in this way, the contact area between the fishing line passage peripheral surface and the fishing line is reduced, stickiness between the fishing line wet with water and the rod body is suppressed, and sliding is also possible. It also reduces resistance.

[0004]

In a rod body for a hollow fishing rod having such a fishing line support projection formed therein, a constant diameter is required to form the fishing line support projection, and the fishing line support projection is formed. There is no choice but to increase the diameter compared to when it is not used. That is, in the fishing rod, the rod body located closer to the tip end has a smaller diameter, and the tip end side becomes easier to bend. Then, it is preferable that the tip rod located closest to the tip end has a diameter as small as possible so that the tip rod is easily bent and reacts sharply when a fish is tackled. However, when forming the fishing line support protrusion on the inner surface, (the minimum diameter through which the fishing line can be inserted) +
Since the diameter of the rod body is required for the height of the fishing line support protrusion, there is a limit in reducing the diameter.

Therefore, there has been a demand for a method of manufacturing a rod body, particularly a small-diameter tip rod, which enables smooth movement of the fishing line within the rod body without forming a fishing line support protrusion. An object of the present invention is to provide a method for easily manufacturing a rod body having a small diameter in which a fishing line can be smoothly moved within the rod body.

[0006]

The manufacturing method of the invention 1 is a method for manufacturing a rod body which is a tapered cylindrical body constituting a fishing rod, and includes the following steps. A step of spirally winding a peeling tape so that a part of the core material is sequentially overlapped and laminated on the outer periphery of a tapered core material on the rod side of the core material. The process of winding the prepreg material around the wound release tape. The process of firing the prepreg material in the furnace. The step of decoreing the core material and peeling the release tape. The process of applying water-repellent paint to the inner circumference of the decoreed prepreg material.

According to this method, a predetermined peeling tape is wound around the core material while a part of the peeling tape is laminated, so that an inclination and a step corresponding to the thickness of the peeling tape are sequentially formed on the outer periphery thereof. Then, when the prepreg material is wound around the outer periphery thereof, the inclination and the step of the peeling tape are transferred to the prepreg material. When the core material and the release tape are peeled off after firing,
An inclination and a step remain on the inner surface of the cylindrical rod body that is formed of the prepreg material. By applying the water-repellent paint to the inner peripheral surface having such an inclination and a step, the water-repellent paint is favorably attached. In addition, the delicate inclination and step of the inner surface of the rod reduce the contact area with the fishing line.

By adopting such a manufacturing method and forming a subtle inclination and a step on the inner peripheral surface, it becomes possible to smoothly move the fishing line without forming a fishing line supporting protrusion as in the conventional case. Further, the diameter can be made sufficiently smaller than that of the conventional rod body. The method of invention 2 is the method of invention 1, wherein the release tape is a polypropylene tape having a width of 5 to 15 mm, and a part of the tape base side of the tape is sequentially arranged on the outer periphery of the core material at a pitch of 1 to 3 mm. The core material is spirally wound while being laminated.

By winding such a predetermined peeling tape around the core material, good inclination and steps can be formed on the inner surface of the cylindrical rod body.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. (Structure of the entire fishing rod) As shown in FIG. 1, a fishing rod adopting the first embodiment of the present invention has a cylindrical base rod 1 and a plurality of rods that are sequentially connected to the tip side of the base rod 1 in a spouting manner. Tubular middle rod 2,
3 and a tip rod 4 connected to the tip end side of the middle rod 3. The base rod 1 to the tip rod 4 are, as described later, a tapered tapered tubular member formed of a prepreg sheet / prepreg tape made of carbon fiber reinforced resin, glass fiber reinforced resin, or the like.

A bottom plug 9 is detachably fitted to the end of the base rod 1 on the rod base side, and a reel seat 5 on which the reel can be detachably mounted is provided on the peripheral surface. The fishing rod described in this embodiment is a so-called centering rod, and a fishing line introducing port 6 for introducing the fishing line from the reel into the rod body is formed on the tip side peripheral surface of the reel sheet 5 of the original rod 1. A fishing line introducing guide 7 for guiding the fishing line into the fishing line introducing port is arranged on the peripheral surface thereof.

On the other hand, a top guide 8 is connected to an end portion of the tip rod 4 on the tip side, and the fishing line guided from the fishing line introducing port 6 into the rod body is sequentially sent to the tip side to be outside the top guide 8. Will be derived. In each of these rod bodies, in the upper rod 2 and the middle rod 3 where the fishing line is inserted through the inside of the rod body, even if a spiral fishing line support projection is formed on the inner peripheral surface of the fishing line passage inside the fishing rod. Good. The fishing line support projections can be formed by a known method. For example, there is a method in which a prepreg tape for forming the fishing line support projections is spirally wound to be integrally formed with the main body of the rod body.

(Structure and manufacturing method of the tip rod 4) The tip rod 4 having the smallest diameter and located closest to the tip side of the rod body is the source rod 2
Unlike the middle rod 3 and the middle rod 3, it is manufactured by the following structure and manufacturing method. As schematically shown in FIG. 2, the tip rod 4 is a tubular member with a tapered taper, and has a rod body 10 having a subtle inclination and a step on the inner peripheral surface, and a rod body 10 The water-repellent coating layer 11 is laminated on the peripheral surface. The structure of the rod main body 10 will be described in more detail in the manufacturing method described later, but carbon fiber reinforced resin obtained by impregnating carbon fiber with a synthetic resin such as epoxy resin, or glass fiber with synthetic resin such as epoxy resin is used. This is a part formed by sequentially laminating and firing prepreg sheets and prepreg tapes made of impregnated glass fiber reinforced resin and the like to be integrated. In this manufacturing process, a subtle inclination and step are formed on the inner peripheral surface. It is preferable to set the inclination so that the tip side of the recess is a gentle slope and the rod side is steep. Because with this kind of inclination,
This is because it does not prevent the water that enters the rod body together with the fishing line from flowing out to the tip side.

On the other hand, the water-repellent coating layer 11 is applied after the rod body 10 is manufactured by pouring the water-repellent coating into a cylindrical shape. Next, a method for manufacturing the tip rod 4 will be sequentially described. As shown in FIG. 3, a tapered cylindrical mandrel (core material) 50 having a predetermined taper is prepared, and a peripheral surface thereof is coated with a release agent or the like as necessary. Then, a peeling tape 51 made of polypropylene or the like is spirally wound around the outer circumference. The peeling tape 51 depends on the size of the tip rod 4 to be manufactured, but in general, the width is 5 to 15 mm and the thickness is 20 to 30 μm.
It is preferable to use a grade. Then, such a peeling tape 51 is sequentially 2 m from the rod side of the mandrel 50.
It is wound while being partially overlapped and laminated (see FIG. 4) at a pitch of about m (sequentially shifting from the rod side by about 2 mm in the axial direction of the mandrel 50).

Next, as shown in FIG. 5, a sheet of prepreg material 52 in which carbon fibers or glass fibers are aligned and impregnated with epoxy resin or the like is provided on the outer periphery of the auxiliary prepreg 51 wound in this way. Alternatively, it is wound into a tape. The prepreg material 52 thus opened constitutes the rod body 10 described above, and a plurality of different prepreg materials 52 may be wound several times. For example,
Prepreg material 5 that is wound directly around the peeling tape 51
2 is located on the innermost side, and it is preferable to use a sheet-like prepreg material 52 in which carbon fibers are aligned in the axial direction in order to improve bending rigidity in the axial direction of the rod body. In order to increase the rigidity in the crushing direction, a tape-shaped prepreg material 52 in which carbon fibers or glass fibers are oriented in the length direction of the tape may be further wound around the outer circumference thereof.

By winding such a prepreg material 52 while applying pressure to the outer periphery of the peeling tape 51, the resin of the prepreg material 52 flows into and is closely adhered between the laminated layers, and as shown in FIG. The inclination and step of the peeling tape 51 are transferred to the inner peripheral surface of the layer formed by the material 52. Then, if necessary, a molding tape is wound around the outer circumference of the prepreg material 52, and this is baked in a furnace to cure and integrate the prepreg material 52.
Subsequently, the mandrel 50 is pulled out, both ends are trimmed and adjusted to an appropriate length, the molding tape on the outer peripheral surface and the peeling tape 51 existing on the inner peripheral surface are peeled off, and the peripheral surface is polished and smoothed to remove the spike tip. 4 is manufactured. At this stage, release tape 5
By peeling 1 from the inner peripheral surface, an inclination and a step are formed on the inner peripheral surface of the rod body 10 formed by the prepreg material 52 (see FIG. 6A). Here, the water-repellent paint is poured onto the inner circumference of the tip rod 4 to be attached to the inner circumference surface of the water-repellent paint layer 11.
Will be provided (see FIG. 6 (b)).

The tip rod 4 manufactured in this manner is the rod body 1
The inner peripheral surface of No. 0 has a slight inclination and a step, and by applying the water-repellent paint to the inner peripheral surface having such an inclination and a step, the water-repellent paint adheres well, and the water-repellent paint layer 11 can be easily formed. Further, such a delicate inclination and step of the inner peripheral surface of the rod reduces the contact area with the fishing line, and the water-repellent coating layer 11 eliminates water that enters the fishing line.
It is possible to smoothly move the fishing line without forming the fishing line support protrusion. The diameter of the tip rod 4 can be made sufficiently smaller than that of the conventional rod body, and the tip rod 4 has a sensitive reaction.

[Other Embodiments] (a) The pitch width, thickness, etc. of the peeling tape 51 can be arbitrarily set, and may be set according to the size of the tip rod 4 to be manufactured. (B) In the above-mentioned embodiment, the above method is adopted only for the tip rod 4 that requires a particularly small diameter, but the present invention is not limited to the tip rod, and may be applied to other rod bodies. Of course it is possible.

[0019]

According to the method of the present invention, it is possible to easily manufacture a rod body having a small diameter so that the fishing line can be smoothly moved within the rod body.

[Brief description of drawings]

FIG. 1 is an overall view of a fishing rod adopting an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the tip rod 4 of FIG.

FIG. 3 is a diagram showing a manufacturing process of the tip rod 4 of FIG. 1.

FIG. 4 is a diagram showing a manufacturing process of the tip rod 4 of FIG. 1.

5 is a diagram showing a manufacturing process of the tip rod 4 of FIG. 1. FIG.

FIG. 6 is a view showing a state after firing of the tip rod 4 of FIG. 1.

[Explanation of symbols]

4 Ear pole 10 Rod main body 11 Water-repellent paint layer Fifty mandrels 51 peeling tape 52 prepreg material

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B29C 67/14 RM Z

Claims (2)

[Claims] 1. A method for manufacturing a rod body, which is a tapered cylindrical body constituting a fishing rod, wherein a part of a predetermined core material having a taper taper is successively formed on the rod base side of the core material. A step of spirally winding the peeling tape so as to be overlapped and laminated, a step of winding a prepreg material on the outer circumference of the rolled peeling tape, a step of firing the prepreg material in a furnace, and the core A method for manufacturing a rod body, comprising the steps of decoreing a material and peeling a release tape, and applying a water-repellent coating to the inner circumference of the decoreed prepreg material. 2. The release tape is a polypropylene tape having a width of 5 to 15 mm, and the outer circumference of the core material is 1 to 3 mm.
2. The manufacturing method according to claim 1, wherein the tape is wound around the core material in a spiral shape while sequentially laminating a part of the tape on the rod base side at a pitch.