JPH09117238A - Production of inwardly threaded fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing an inwardly threaded fishing rod, capable of effectively preventing a resin from melting out and solidifying on the outer periphery of a mandrel on the curing of the resin, and enabling to easily produce the fishing rod having a fishing line-guiding member on the inner surface. SOLUTION: A stepped part is formed at a proper place on the base end side of a mandrel 1, and a small diameter part 1a having a stepped part 1b and formed in a small diameter is formed at the tapered tip of the mandrel 1. A fishing line-guiding member 2 comprising metal wires or thick ceramic or boron single filaments impregnated with a synthetic resin is spirally wound on the outer peripheral part of the small diameter part 1a, and further, a mold-releasing agent such as a fluororesin solution is coated on the wound fishing line-guiding member to form a coating film 3. A sheet 4 comprising a scrim cloth formed by densely and thinly winding fine diameter reinforcing fibers such as glass fibers is wound and adhered to the outer peripheries of the fishing line-guiding member 2 and the coating film 3. A prepreg 5 for forming a fishing rod is further wound on the outer peripheries of the sheet 4 and the mandrel 1. The wound product is pressed, baked, cured, and subsequently subjected to the removal of the mandrel 1 to form the fishing rod pipe.

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 hollow fishing rod.

[0002]

2. Description of the Related Art The tip of a hollow fishing rod is the most curved in the rod tube that constitutes the rod. Therefore, by providing a plurality of fishing line guide guides on the inner peripheral surface of the tip rod, the fishing line is bent during bending. Various proposals have hitherto been made to reduce the increase in sliding resistance by making sliding contact with the inner peripheral surface of the tip rod. In addition, even for rod pipes other than the tip rod of the middle fishing rod, the fishing line that is spirally supplied into the rod pipe from the reel or the like provided on the original rod when the tackle is fed out comes into contact with the inner surface of the rod. In order to prevent an increase in the feeding resistance of the fishing rod, or to reduce the increase in sliding resistance due to the fishing line slidingly contacting the inner peripheral surface of the rod pipe due to the bending of the rod pipe during fishing, a plurality of ring members are projected on the inner peripheral surface. Various types of devices that have been installed have been conventionally proposed.

In the one disclosed in Japanese Patent Laid-Open No. 4-341133, a ring made of a single fiber having a large diameter such as ceramics or boron is positioned and mounted on the stepped portion of a cored bar having a stepped portion on the outer periphery. By winding a prepreg for forming a rod tube in which reinforcing fibers are impregnated with synthetic resin around the outer periphery of the rod, pressurizing and firing by a conventional method, it is possible to project multiple rings on the inner peripheral surface of the tip rod. It is disclosed.

However, in such a case, the synthetic resin in the prepreg may elute on the surface of the ring during firing and the ring may be buried in the resin on the inner peripheral surface of the rod tube. Further, even if a part of the ring is exposed on the inner surface of the rod, there is a problem that the synthetic resin that has been eluted and solidified around the ring sticks in the shape of burrs to damage the fishing line.

Therefore, as disclosed in Japanese Unexamined Patent Publication No. 7-115878, a ring made of a single fiber such as ceramics or boron is positioned and mounted on the outer circumference of a rubber tube coated on the outer circumference of a core bar. A sheet made of the same resin material as the synthetic resin impregnated into this prepreg sheet was wound between the reinforcing fiber wound around the outer periphery and a prepreg for forming a rod tube, which was impregnated with synthetic resin, or was positioned and mounted on the outer periphery of the core metal. A prepreg for forming a rod tube is wound around the outer periphery where a release agent and a resin inflow prevention member are arranged before and after the ring, and a plurality of prepregs are formed on the inner peripheral surface of the tip rod by pressurizing and firing by a conventional method. It is disclosed to project the ring.

However, in such a case, although elution and solidification of the synthetic resin on the ring surface can be prevented by the rubber tube, the mold release agent or the resin inflow preventing member, the rubber tube in the manufacturing process of the rod tube. However, the work of disposing and removing the release agent or the resin inflow preventing member is complicated, resulting in a decrease in production efficiency. Also,
Since the diameter of the ring part attached to the outer circumference of the core metal is larger than the other parts, when the rod tube forming prepreg is wound around the outer circumference, the ring is twisted and the ring can be positioned and retained inside the rod tube. It was difficult. Furthermore, if you try to attach the ring only to a part such as the tip inside the rod tube, the twisting will be further increased due to the difference in diameter with other parts, so the winding of the rod tube forming prepreg There was a problem that I could not do it.

[0007] Also, registered utility model publication No. 3013952
The one described in No. 1 has a predetermined length and an outer diameter approximating the inner diameter of the rod pipe, and further, a support having a predetermined number of fishing line guides mounted thereon is detachably positioned and fixed in the rod pipe. This prevents the fishing line from being cut and the rod tube from being damaged due to the movement of the fishing line guide due to the bending of the rod tube, and by reinforcing the rod tube with a support, it can withstand strong pulling of fish. An open fishing rod is disclosed.

[0008]

However, in the above-mentioned registered utility model publication No. 3013952, the fishing line guide fixed to the rod tube is arranged in a supporting cylinder having the fishing line guide arranged therein. Since the elastic means provided at the base end portion of the rod pipe merely positions the rod pipe, the movement of the support pipe inside the rod pipe due to the bending of the rod pipe cannot be prevented, and the support pipe between the fishing line guides cannot be prevented. It is not intended to reduce the sliding resistance of the fishing line due to the contact of the fishing line with the inner peripheral surface. Furthermore, since a tubular body having an outer diameter similar to the inner diameter of the rod tube is fixed in the rod tube, the rod tube can be reinforced as described above, but it has a great influence on the curvature of the rod tube and is flexible. There is a problem that the use of the tip of the tip rod is restricted. In addition, this tubular body must be provided with a tubular body formed to have an outer diameter substantially equal to the inner diameter of the rod tube so as to match the length corresponding to the mounting position of the fishing line guide arranged in the rod tube. It is necessary to mold and prepare a tubular body for each rod tube of different length, which causes problems such as an increase in the number of parts and complexity of processing. Further, since the base end portion of the tubular body is positioned and held in the rod pipe, there is a problem that the fishing line guide cannot be provided only at the tip end portion of the rod pipe.

The present invention has been made in view of the above-mentioned problems, and it is possible to effectively prevent the resin from eluting and solidifying on the outer periphery of the core during firing, and to easily manufacture the fishing rod. It is an object of the present invention to provide a method for manufacturing a hollow fishing rod.

[0010]

SUMMARY OF THE INVENTION The present invention is a center-through fishing rod in which a rod-forming prepreg in which reinforcing fibers are impregnated with a resin is wound around a core metal, and the fishing line is inserted into a rod pipe formed by pressurizing and firing. In the manufacturing method of the above, a small diameter portion having a step is formed on the outer periphery of the core metal, a fishing line guide member is attached to the small diameter portion, and a sheet made of a scrim cloth of reinforcing fibers is attached to the outer circumference of the fishing line guide member. Wrapping a tape, and winding the rod-forming prepreg around the scrim cloth and the outer periphery of the core bar; the thin portion is formed only on the outer periphery of the tip of the core bar; and the fishing line guide member on the core bar. Applying a release agent such as a fluorine solution after mounting; the scrim cloth is characterized by being impregnated with a fluororesin or lined with a fluororesin sheet.

[0011]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view illustrating a method for manufacturing a hollow fishing rod according to the present invention. Reference numeral 1 in the drawing is a core metal, and a step portion is formed at a proper position on the base end side of the core metal 1, and a tapered portion has a small diameter portion 1a having a small diameter with a step 1b. Has been done. A single fiber having a large diameter such as ceramics or boron on the outer peripheral portion of the small diameter portion 1a, a cloth tape woven from these, impregnated with a synthetic resin into Lillian braided with these, or a fishing line guide member made of a metal wire rod. 2 is spirally wound, and a coating 3 coated with a release agent such as a fluorine solution is formed. Then, a sheet 4 made of a scrim cloth in which reinforcing fibers such as glass fibers or carbon fibers having a small diameter are densely and thinly woven is wound around the outer circumferences of the fishing line guide member 2 and the coating film 3.
Further, a rod-forming prepreg 5 is wound around the outer periphery of the sheet 4 and the core metal 1. Then, after being pressurized, baked and cured, the core metal 1 is pulled out to form a rod tube of a fishing rod. In this embodiment, the seat 4 between the fishing line guide members 2 is produced by manufacturing the fishing rod as described above.
Since the rod-forming prepreg 5 and the rod-forming prepreg 5 project to the inner peripheral surface side of the rod tube, after the resin impregnated in the rod-forming prepreg 5 is solidified by baking, the fishing line guide member 2 is formed by the recess between the protrusions. It is positioned and fixed in the pipe. Further, the resin impregnated in the rod-forming prepreg 5 has the scrim cloth sheet 4 interposed between the resin and the outer circumference of the fishing line guide member 2 or the core metal 1. Even if it elutes, even if it elutes, since the coating 3 coated with the release agent is formed on the outer peripheral surface of the fishing line guide member 2 or the core metal 1, the adhesion can be prevented.

In the above embodiment, the fishing line guide member 2 is spirally wound around the small diameter portion 1a of the core metal 1, but the present invention is not limited to the above embodiment, and the fishing line is not limited thereto. The guide member 2 may be mounted in an annular shape with a predetermined gap, or a plurality of fishing line guide members 2 made of a high hardness and abrasion resistant member such as ceramics that has been fired in an annular shape in advance may be mounted. good. Further, in the above-mentioned embodiment, the sheet 4 made of scrim cloth is wound,
The present invention is not limited to this, and a tape made of scrim cloth may be tightly wound so that both ends overlap. Further, the sheet 4 made of scrim cloth may be cut into one ply and placed on the rod forming prepreg 5, and the sheet 4 may be wound around the fishing line guide member 2 and the coating 3. Further, the rod-forming prepreg 5 does not always have to be formed by one kind of prepreg. For example, the inner layer is a prepreg in which the inner layer is aligned in the circumferential direction, the prepreg in which the intermediate layer is aligned in the axial direction, and the outer layer is It may be configured by any combination such as a draw-aligned prepreg or a cross prepreg inclined at a predetermined angle in the axial direction, and further, the kind of the reinforcing fiber, the resin to be impregnated, etc. may be arbitrarily selected and combined. May be.

FIG. 2 is a sectional view showing a tip rod tube. When such a tip rod tube 6 is manufactured, a core metal 1 as shown in FIG. 3 is used. That is, a small-diameter portion 1a having a stepped portion 1b is formed only on the tip portion of the core metal 1, the fishing line guide member 2 is wound only on the small-diameter portion 1a, and a release agent such as a fluorine liquid is applied. 3 is formed. Further, a sheet 4 composed of a scrim cloth in which reinforcing fibers such as thin glass fibers or carbon fibers are densely and thinly woven is wound around the fishing line guide member 2 and the coating 3. Furthermore, a rod-forming prepreg 5 is wound around the outer periphery of the sheet 4 and the core metal 1. Then, the rod tube of the fishing rod is formed by pulling out the core after pressing, firing and curing.
The rod tube thus configured is formed such that the fishing line guide member 2 is exposed only on the inner circumference of the tip. Therefore, even when the fishing rod is bent during fishing, the tip of the tip rod, which requires adjustment of repulsive force, is not significantly affected. In addition, a fishing line guide member 7, on the inner peripheral surface of the tip rod pipe 6,
7 is arranged so as to be movable in the axial direction. A spring 8 is arranged between the fishing line guide members 7, and the fishing line guide member 7 is positioned by the urging force of the spring 8. A male screw portion 6a is formed on the outer circumference of the tip of the tip rod tube 6, and a female screw portion 9a formed on the inner circumference of the base end of the top guide 9 is screwed onto the male screw portion 6a.

FIG. 4 is a sectional view showing the upper rod 10. A fishing line introducing guide 11 is provided on the peripheral wall of the original rod 10 and a reel (not shown) provided on the original rod (not shown).
The fishing line fed out from the fishing line is configured to be inserted into the rod tube from the fishing line introducing guide 11. The fishing line is configured to be guided by a fishing line guide member 13 provided at the base end of a rod tube 12 provided on the tip side of the upper rod 10. Further, the fishing line guide member 2 is attached to the inner circumference of the upper rod 10 at least from the fishing line introduction guide 11 to the tip side. Therefore, the fishing line spirally introduced into the rod tube from the reel is guided to the fishing line guide member 13 with the contact with the inner peripheral surface of the tip portion of the upper rod 10 being suppressed to a minimum. In addition, a padding portion 10a is formed on the inner peripheral portion of the tip of the base rod 10 so that the inner diameter is reduced. Then, by fitting the outer periphery of the base end of the rod pipe 12 into the padding portion 10a, the rod pipe 12 is mounted on the upper rod 10. The padding portion 10a is formed by winding a rod-forming prepreg similar to the rod-forming prepreg around the tip of the core metal.

Further, as shown in FIG. 5, the fishing line introduction guide 1
1. A fishing rod guide member 2 is formed up to the base end side of the fishing rod guide 1, and a fishing rod is formed on the base end side of the fishing line guide member 2 by a step 1b formed by a small diameter portion 1a of a core metal 1 (FIG. 1). In the step portion 10b of 10, the plug body 14 corresponding to the inner diameter of the step portion 10b
By fixing the position, it is possible to prevent water, dust, and the like from entering the base end side and prevent rusting of the main plug and the like.

Further, the water repellency in the rod tube can be improved by impregnating the scrim cloth sheet 4 or tape with a fluororesin or lining the fluororesin sheet. When the scrim cloth is impregnated with fluororesin or is lined, unevenness is formed by corona discharge or the like on the surface to be welded to the synthetic resin, so that the welding strength is improved and the durability is improved.

[0017]

According to the present invention, since the scrim cloth is interposed between the rod-forming prepreg, the fishing line guide member, and the core metal as described in claim 1, the resin in the rod-forming prepreg is not removed during firing. Elution on the outer circumference of the fishing line guide member or core metal,
It is possible to prevent solidification and prevent troubles due to this. Further, since the fishing line guide member mounted in the rod pipe is supported by the uneven portion formed by pressing the rod forming prepreg wound around the outer circumference thereof via the scrim cloth, the fishing line guide member. Can be mounted at any position in the rod tube at any density, and can be prevented from being moved due to bending of the rod tube and can be securely held. Furthermore, the fishing line guide member can be mounted at any position in the rod tube at any density according to the rod tone that differs depending on the material and configuration of the rod forming prepreg, so the sliding resistance of the fishing line due to the bending of the rod tube It is possible to prevent troubles caused by. Further, since the fishing line guide member is wound around the small diameter portion of the core metal together with the scrim cloth wound around the outer periphery, the rod forming prepreg wound around the outer periphery is the winding portion around the core metal. And it is wound without causing a step. Therefore, the fishing line guide member can be positioned in the rod tube without twisting or the like. Furthermore, it is only necessary to wind the scrim cloth around the fishing line guide member mounting area before or at the same time as winding the rod forming prepreg, and no special processing work or post-manufacturing removal work is required, improving production efficiency. Can be achieved. Further, since the fishing line guide member to be mounted in the rod pipe is formed by being wound around the outer periphery of the small diameter portion of the cored bar, it is not necessary to prepare special parts in advance and the production efficiency is improved. Can be planned.

Further, according to the present invention, the fishing line guide member can be mounted on the inner peripheral surface of the hollow rod between the tip top guide of the tip rod and the fishing line guide member arranged in the tip rod. , The effect on the bending of the tip rod is minimized to reduce the sliding resistance of the fishing line to the inner peripheral surface when the tip rod is bent. In addition, when it is used for the base rod or the core rod for forming the base rod, the fishing rod introduction guide provided on the base rod or the base rod and the rod rod attached to the tip side of the base rod or the base rod The fishing line guide member can be attached to the inner peripheral surface of the original rod or the upper rod between the fishing line guide member provided at the base end, and the fishing line inserted in the rod pipe adheres to the inner peripheral surface of the rod pipe. It can be effectively prevented. Furthermore, on the inner circumference of the rod tube,
Since the protruding portion is formed corresponding to the stepped portion of the small diameter portion of the cored bar, the fishing line guide member arranged in the rod tube can be held in a stable state.

Further, according to the third aspect, even if the resin in the prepreg is eluted from the scrim cloth, the resin adheres to the outer periphery of the core metal or the fishing line guide member mounted on the outer periphery of the core metal and solidifies. Can be effectively prevented.

Further, according to the present invention, it is possible to prevent the resin in the prepreg from being eluted and solidified on the outer circumference of the fishing line guide member or the core by the scrim cloth, which effectively causes the trouble. Can be prevented. Further, since the scrim cloth is impregnated with a fluororesin or is lined with a fluororesin sheet, it is possible to prevent the accumulation of water and the adhesion of dust to the uneven portion formed by this, which is caused There are effects such as damage to the fishing line or the fishing line guide member, and reduction of sliding resistance of the fishing line.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a manufacturing process of a method for manufacturing a hollow fishing rod according to the present invention.

FIG. 2 is a cross-sectional view of the tip rod tube of the hollow fishing rod manufactured by the manufacturing method according to the present invention.

FIG. 3 is a front view of a cored bar used in the method for manufacturing a hollow fishing rod according to the present invention.

FIG. 4 is a cross-sectional view of a rod tube of a former upper rod of a hollow fishing rod manufactured by a manufacturing method according to the present invention.

FIG. 5 is a cross-sectional view of another embodiment of the rod tube of the original upper rod of the hollow fishing rod manufactured by the manufacturing method according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Core metal 1a ... Small diameter part 2 ... Fishing line guide member 3 ... Coating film 4 ... Sheet 5 ... Rod forming prepreg 6 ... Spike rod tube 7 ... Fishing line guide member 8 ... Spring 9 ... Top guide 10 ... Original rod 11 ... Fishing line introduction guide 12 ... Rod tube 13 ... Fishing line guide member 14 ... Plug body

Claims (4)

[Claims] 1. A method for producing a hollow fishing rod, comprising: winding a rod-forming prepreg obtained by impregnating a reinforcing fiber with a resin on a core metal; and pressing and firing the rod to insert a fishing line into the rod pipe.
A small diameter portion having a step is formed on the outer periphery of the core metal, a fishing line guide member is attached to this small diameter portion, and a sheet or tape made of a reinforcing fiber scrim cloth is wound around the outer circumference of the fishing line guide member. A method of manufacturing a hollow fishing rod, characterized in that the rod-forming prepreg is wound around the outer circumferences of the scrim cloth and the core metal. 2. The method for manufacturing a hollow fishing rod according to claim 1, wherein the small diameter portion is formed only on the outer circumference of the tip of the cored bar. 3. The method of manufacturing a hollow fishing rod according to claim 1, wherein a mold release agent such as a fluorine solution is applied after the fishing line guide member is mounted on the cored bar. 4. The method for manufacturing a hollow fishing rod according to claim 1 or 2, wherein the scrim cloth is impregnated with a fluororesin or is lined with a fluororesin sheet.