JPH04356147A - Production of fishing rod - Google Patents

Abstract

PURPOSE:To provide a method for forming an uneven surface for preventing the sticking on the outer surface of a mating part of a fishing rod without impairing excellent aspects of expanding the outside diameter of the joined part and requiring much labor. CONSTITUTION:A thermoplastic thickness-increasing prepreg 2 is formed on the whole periphery of a mandrel 1 at a site corresponding to the back end of a rod material 5 and a sheetlike prepreg (P) prepared by impregnating high- strength fiber with a resin is wrapped from the tip of the mandrel 1 around the outer surface of the thickness-increasing prepreg 2. A forming mold 3 having an uneven surface is arranged on the outer surface of the prepreg (P) located on the outside of the thickness-increasing prepreg 2, pressurized and burned to form a mating part having the uneven surface in the back end of the rod material.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is characterized in that the rod material is formed into a cylindrical shape by winding a sheet-like prepreg made of high-strength fibers impregnated with resin around a loosely tapered core metal and firing it. The present invention relates to a method of manufacturing a fishing rod, and more particularly, to a technique for forming a mating portion on the outer surface of the rear end of a rod material configured in a swinging type.

0002

[Prior Art] Conventionally, when forming a mating part on the outer surface of the rear end of a rod material constructed in a swing-out type, an auxiliary pattern is usually formed on the part corresponding to the mating part on the outer surface of the prepreg forming the rod body. By winding and firing a small piece of prepreg, the outer diameter of this part is expanded to form a mating surface with a predetermined width. , an uneven surface is formed on the outer surface by grooves or the like to prevent sticking.

0003

[Problems to be Solved by the Invention] Now, considering the mating portion formed by winding small pieces of prepreg as described above, in the case where the outer diameter of the mating portion is expanded in this way, the mating surface The finishing process of the fishing rod can be carried out without being disturbed by other objects, and since the contact between the intermediate parts of the fishing rod materials is suppressed when the fishing rod is expanded and contracted, the expansion and contraction operations can be performed smoothly. If the uneven surface is formed, it will have a good surface in that even if it invades, sticking will be suppressed. Also, when considering forming an uneven surface on the mating part, for example, when forming a groove by cutting, the mating part is reinforced with high-strength fibers as described above, so it is not easy to process. Moreover, since this processing must be performed after firing, the number of steps for manufacturing the rod increases, and there is room for improvement in terms of time and effort. In order to eliminate this inconvenience, as shown in Japanese Patent Application Laid-open No. 1-124342, the joining part formed by winding a small piece of prepreg (auxiliary pattern) as described above is It is also conceivable to place a mold material for molding and form an uneven surface by pressing the mold material on the outer surface of the prepreg during firing.
In the areas where the thickness of the prepreg is increased by the auxiliary pattern, the high-strength fibers exert a strong force to prevent deformation, so it is necessary to form an uneven surface that faithfully follows the shape of the shape. is difficult and there is room for improvement. Therefore, it is possible to form a thermoplastic resin layer on the outer or inner surface of the prepreg and form an uneven surface by pressing the mold material as described above, but if a layer of only resin is formed in this way, Due to softening during firing,
As a result of this resin flowing out, it becomes impossible to mold it into the desired shape. The object of the present invention is to provide a rational method for forming an uneven surface to prevent sticking on the outer surface of the mating part of the rod material without impairing the good aspect of enlarging the outer diameter of the mating part and without requiring much effort. The point is to compose it.

0004

[Means for Solving the Problems] As mentioned at the beginning, the present invention is characterized in that it is a fishing rod manufacturing method in which the rod material is formed by winding prepreg around a core metal and firing it. After forming a thickened prepreg made by impregnating a resin with a material that does not contain high-strength fibers around the entire circumference of the core metal at a portion corresponding to the rear end of the rod material, this thickened prepreg is formed from the tip of the core metal. After winding the prepreg over the outer surface of the thick prepreg, or after winding the prepreg around the core metal, the thickened prepreg is wrapped around the entire outer surface of the portion corresponding to the rear end of the rod material. After winding and any of these steps, a mold having an uneven surface is placed on the outer surface of the thickened prepreg, and the rod is baked under pressure to form a mat with an uneven surface on the rear end of the rod material. Its functions and effects are as follows.

[0005]

[Operation] When the above characteristics are configured as shown in FIGS. 1 to 8, for example, when manufacturing a fishing rod, a sheet-like thermoplastic resin is wound around the core bar 1 as the thickened prepreg 2, and the prepreg P is applied to the outer surface of the core bar 1. By winding and arranging the mold 3 on the outer surface of the prepreg P, and firing with the heat shrink tape 4 wound around this outer surface, the thickened prepreg 2 is allowed to deform due to heat during firing. In this situation, the pressure from the heat shrink tape 4 is applied from the outside surface of the mold 3, so the thickened prepreg 2 is deformed along with the prepreg P along the shape of the mold 3, and the resin is softened during this deformation. However, since materials such as nonwoven fabric and foamed lime suppress the flow of the resin, the thickened prepreg 2 is prevented from flowing out. As shown in FIGS. 9 and 10, even when the thickened prepreg 2 is formed on the inner periphery of the prepreg P, the thickened prepreg 2 is prevented from flowing out to the outside. is deformed along the shape of the mold 3. In other words, in this method, the outer diameter of the mating part is expanded by the thickened prepreg 2, and at the same time, this thickened prepreg 2 is more easily deformed than a prepreg containing high-altitude fibers. , as mentioned above, the resistance from high-strength fibers is smaller when forming an uneven surface compared to the one using an auxiliary pattern.
Or, the resistance from high-strength fibers is eliminated, and
Since this shaping is performed during firing, there is no need for processing after firing.

[0006]

[Effect of the invention] Therefore, without compromising the good aspect of enlarging the outer diameter of the mating part of the rod material and without taking much effort,
A method for easily forming a concavo-convex surface to prevent sticking on the outer surface of this mating portion has been rationally constructed.

[0007]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings. 1 to 8 show a method for manufacturing a rod material for a swing-type fishing rod. In this method, as shown in FIG. 7, a mandrel 1 as a core metal is first impregnated with resin in foamed lime. A sheet-like thickened prepreg 2 is set at a position corresponding to the rear end of the rod material and wound, and then a sheet-like prepreg made by impregnating high-strength fiber such as carbon fiber with a thermosetting resin such as epoxy is prepared. The prepreg P is wound from the tip of the rod material to the position corresponding to the rear end.

This prepreg P has fiber directions perpendicular to the axial direction of the mandrel 1, P1, and parallel fiber directions, P2.
, orthogonal P3 are sequentially overlapped and wound. Next, as shown in FIG. 8, after arranging a mold 3 in which uneven parts are formed with a plurality of slits 3A on the outer surface of the prepreg P located outside the thickened prepreg 2, the outer surface of the prepreg P, A heat-shrinkable tape 4 made of cellophane or the like is then wrapped around the outer surface of the mold 3.

Incidentally, at the end of this winding, the cross-sectional shape is expressed as shown in FIGS. 1 and 2. Next, by firing at a predetermined temperature, the thickness of the prepreg 2 is increased by the action of heat.
When the prepreg P becomes flexible, the mold 4 is pressed against the outer surface of the prepreg P by the pressure from the heat shrink tape 4, as shown in Figure 3.
As shown in FIG. 4, the thickened prepreg 2 is deformed together with the prepreg P, and protrusions are formed on the outer surface of the prepreg P. After that, the epoxy resin of the prepreg P hardens, and the firing is completed. .

Then, the mandrel 1 is removed, the heat shrink tape 4 is removed, the mold 3 is removed, and surface treatment such as polishing is performed to form an uneven surface of the protrusions to prevent sticking, as shown in FIGS. 5 and 6. The rod material 5 of the fishing rod is completed in a state in which a mating portion 5A having a shape is formed.

[Other Embodiments] In addition to the above embodiments, the present invention includes
For example, as shown in FIGS. 9 and 10, the prepreg P is first wound around the mandrel 1 from the tip of the rod material to the position corresponding to the rear end, and then the outer surface of the prepreg P is wrapped around the mandrel 1. The thickened prepreg 2 is wound at a position corresponding to the rear end, and then a mold 3 having a plurality of protrusions 3A only at the middle part in the axial direction of the rod is formed on the outer surface of the thickened prepreg 2. It is also possible to form a mating portion 5A having an independent groove-shaped concave portion 5B to further prevent sticking by wrapping the heat-shrinkable tape 4 and firing in the same manner as described above. In addition, when the recessed portion 5 is formed in the shape of an independent groove in this way, even if water tries to enter the joint portion 5A, the water will not directly enter into the grooved recessed portion 5B, making it difficult to cause sticking. Become. Further, in the present invention, pressure may be applied by mechanical power during firing to press the mold,
This mold can be implemented in various ways, such as by configuring the mold to have concavities and convexities in the form of a mesh.

[0012]Although reference numerals are written in the claims for convenience of comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

[Figure 1] Cross-sectional view of heat shrink tape at the end of winding

[Fig. 2] A sectional view showing a direction view along the axis in Fig. 1

[Figure 3] Cross-sectional view when firing is completed

[Fig. 4] A sectional view showing a direction view along the axis in Fig. 3

[
Figure 5: Perspective view of the mating part in the completed state

[Figure 6] Cross-sectional view of the mating part in the completed state

[Figure 7] Perspective view when winding prepreg around a mandrel

[Figure 8] Perspective view when winding a mold etc. on the outer surface of prepreg

[Figure 9] Cross-sectional view before firing in another example

[Fig. 10] Cross-sectional view of a mating part in a completed state in another embodiment

[Explanation of symbols]

1 Core metal 2 Thickened prepreg 3. Molding mold 5 Rod material 5A　　　Matching part P Prepreg

Claims (1)

[Claims] Claim 1: A sheet-like prepreg (P) made of high-strength fiber impregnated with resin is attached to a loosely tapered core (1).
A method for manufacturing a fishing rod in which the rod material (5) is formed into a cylindrical shape by winding it around the rod and firing it, the rod material (5) being formed by impregnating a material that does not contain high-strength fibers, such as nylon nonwoven fabric or foamed lime, with a resin. The thickened prepreg (2) consisting of the rod material (5)
After forming the entire circumference of the core metal (1) at the part corresponding to the rear end, this thickened prepreg (2) is applied from the tip of the core metal (1).
After winding the prepreg (2) over the outer surface of the rod material (2) or winding the prepreg (P) around the core metal (1), This thickened prepreg (2) is wound around the entire circumference of the thickened prepreg (2), and after any of these steps, a mold (3) having an uneven portion is placed on the outer surface of the thickened prepreg (2) at an external position, A method for manufacturing a fishing rod, in which a joining part (5A) having an uneven surface is formed at the rear end of a rod material (5) by pressure firing.