JPH0471439A - Preparation of fishing rod - Google Patents

Abstract

PURPOSE:To prevent the dislocation of a core from a mandrel by fitting the core into a fitting groove disposed on the outer periphery of the mandrel, winding a prepreg on the mandrel and the core, pressing and baking the prepreg, pulling out the mandrel from the formed fishing rod main body and subsequently pulling out the core from the main body. CONSTITUTION:A core 3 is fit into a fitting groove 2 of a mandrel 1 whose diameter is enlarged from the base end thereof toward the tip end thereof, and a prepreg is wound on the outer periphery of the core and the mandrel, followed by pressing and baking the wound prepreg to form a fishing rod main body 4. The mandrel 1 is pulled out from the fishing rod main body 4 and the core 3, and the core is moved toward the radius of the fishing body main body and pulled out toward the base end of the main body to form a pair of the fishing rod main body and a deformed portion 5.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for manufacturing a fishing rod, and more particularly, to a method for manufacturing a fishing rod in which a deformed portion is integrally formed on one side of the outer peripheral surface of a cylindrical rod body.

(Prior Art) Conventionally, when forming a hollow fishing rod by wrapping prepreg around the outer periphery of a cored metal, it was necessary to remove the cored metal from the fishing rod after molding. It is formed into a conical shape that gradually increases in diameter toward the base end. For this reason, fishing rods formed from the core metal could only be formed into a conical shape whose diameter gradually increases from the tip to the base.

By the way, conventionally, a part of the core metal has been improved to create not only a simple conical shape in which the diameter gradually increases from the distal end to the proximal end, but also a part of this conical part with an irregular shape. A manufacturing method has also been proposed in which a fishing rod with sections is formed. As shown in Japanese Unexamined Patent Publication No. 2-20233, this manufacturing method uses a flat notch tangentially cut out on one side of the outer peripheral surface of a core bar whose diameter increases in a tapered shape from the distal end to the proximal end. Set up a surface,
A convex part forming mold having a bulging part that bulges outward in the radial direction with respect to the outer circumferential surface of the core metal is placed on this flat surface, and a high strength Synthetic Ml ll in fiber
After applying a prepreg impregnated with i and firing under pressure, the core metal is pulled out and the protrusion forming mold is removed to form an irregularly shaped protrusion that is integral with the rod body, and a fishing line is attached to this protrusion. An insertion hole is formed therein.

(Problem to be Solved by the Invention) However, in this conventional manufacturing method, a flat surface is provided on one side of the outer circumferential surface of the core metal by cutting out the outer circumferential surface in the tangential direction, and a convex portion is formed on the flat surface. Since the irregularly shaped part is formed by placing the part forming mold, when the prepreg is wound, the position of the convex part forming mold is tangentially displaced with respect to the core metal, and the bottom edge of the convex part forming mold is A concave stepped portion is formed between the rod and the core metal, and a concave dent is formed at the joint between the rod body and the irregularly shaped portion of the fishing rod after molding, resulting in poor durability and poor appearance of the fishing rod. There was a problem.

The present invention was invented in view of the above points, and an object of the present invention is to provide a fishing rod in which an irregularly shaped part is provided on the rod body having a shape corresponding to the cored metal, while preventing the core forming the irregularly shaped part from being misaligned with respect to the cored metal. The purpose is to prevent the formation of concave grooves at the joint between the rod body and the irregularly shaped portion of the fishing rod.

(Means for Solving the Problems) Accordingly, the present invention provides a method for manufacturing a fishing rod having an irregularly shaped portion, in which a core bar (1) whose diameter increases in a tapered shape from a tip end toward a base end. A fitting groove (2) is provided on one side of the outer circumferential surface of the metal core (1) and extends in the length direction of the metal core (1), and the groove bottom ends continuously at least on the tip side of the bar 1. ), a core (3) having a bulging portion (31) that bulges radially outward with respect to the outer peripheral surface of the core metal (1) is fitted so as to be movable relative to the core (3) and A prepreg made of high-strength fiber impregnated with synthetic resin is wrapped around the outer periphery of the core bar (1), and the rod body (4) is formed by pressure firing, and then the core bar (1) is wrapped around the rod body (4). 4) and the core (3), and then the core (3) was extracted from the nTI recording rod body (4) to form a deformed part (5) integral with the rod body (4). It is something.

(Function) The core metal (
Fitting the core (3) into the fitting groove (2) of 1), wrapping prepreg around the outer peripheral surfaces of the core (3) and the core bar (1),
The rod body (4) is pressure-fired and has a shape that corresponds to the core metal (1).
It forms. After removing the core metal (1) from the rod body (4) and core (3), the core (3) is moved in the radial direction of the rod body (4) and By pulling the proximal end outward, it is possible to form a deformed portion (5) that is integrated with the rod body (4).

(Example) In the embodiment shown in Figures 1 to 6, there is a hole at the bottom of the rod.

1. A method for manufacturing a fishing rod in which an appropriate throwing direction of a fishing rod can be determined by providing a deformed part (5) for throwing the fishing rod, the diameter of which tapers from the tip end to the base end. From the base end of the core metal (1) as shown in Figure 1, on one side of the outer peripheral surface of the gently conical core metal (1) whose diameter increases in a taper shape from the tip to the base end as shown in Figure 1. A fitting groove (2) with a concave cross section extending in the length direction toward the tip side is provided, and the tip fi19 groove bottom of this fitting groove (2) is continuous with the outer peripheral surface of the core bar (1) and ends. As shown in FIG. 3, the fitting groove (2) is provided with a bulging portion (2) that bulges outward in the radial direction with respect to the outer peripheral surface of the core metal (1).
31) is fitted so as to be relatively movable in the length direction, and one ply of prepreg made of high-strength fiber impregnated with synthetic resin is placed around the outer periphery of this core (3) and core bar (1). - Wrap multiple plies, wrap a binding tape (not shown) around the outer periphery of the wrapped prepreg in a spiral shape, apply pressure, and fire according to the standard method to create a rod body (4) with a shape corresponding to the core metal (1). ), the core metal (1) is attached to the rod body (4) and the core (
3), and then pull out the core (3) outward on the proximal side.
to the center of the rod body (4) and remove the rod body (4).
The tape is pulled outward from the proximal end, and the tape is peeled off to form a deformed portion (5) that is integral with the rod body (4).

The fitting 1IIt (2) is formed so that its groove bottom (21) is parallel to the center line (X) of the core metal (1), so that when the core metal is removed, the core (3) In contrast, the core bar (1) can be pulled out in the longitudinal direction. Also, depending on the groove width and groove depth on the proximal side, the bottom of the groove on the distal end side of the fitting groove (2) may be terminated midway in the length direction of the core bar (1), as shown in Figure 1.3, or Although not shown, the core metal (1
).

Further, the core (3) has a fitting part (32) of a size corresponding to the fitting groove (2) and a bulge part (31) corresponding to the inner surface shape of the irregularly shaped part (5). It is formed in one piece.

As described above, the present invention provides a fitting groove (2) on one side of the outer peripheral surface of the core metal (1) whose diameter increases in a taper shape from the distal end toward the proximal end.
Since the core (3) having the bulge (31) is fitted into the fitting groove (2), the irregularly shaped part is attached to the rod body (4) having a shape corresponding to the core bar (1). (5), it is possible to reliably prevent the core (3) from moving in the tangential direction with respect to the core metal (1) during prepreg winding. Therefore, there is no concave stepped part between the core (3) and the metal core (1) as in the conventional case, so a concave part is formed at the joint between the rod body (4) and the irregularly shaped part (5) in the fishing rod after molding. It is not possible to create dents in the strips.

Furthermore, the manufacturing method of the present invention can also be used to manufacture a fishing rod in which a deformed part (5) for attaching a reel is provided on one side of the front position of the rod butt, as shown in FIG. 7.10. In this case, the fitting groove (2) is provided which extends in the longitudinal direction from the intermediate position in the longitudinal direction of the core metal (1) toward the distal end side, and the fitting groove (2) with the metal core (1) is provided.
, a core (3) having a bulge (31) corresponding to the fixed hood (a) and leg support (b) of the reel mount;
The core (3) and the core metal (1
), the prepreg is wound around the outer periphery of the core (3), and if necessary, as shown in FIG. (6)
and bondage tape (not shown) on the outer periphery of the wrapped prepreg.
is spirally wound, pressurized, and fired according to the standard method to form a core metal (1
) After forming a rod body (4) having a shape corresponding to the above, the core metal (1) is pulled out proximally outward from the rod body (4) and the core (3), and then the core (3) is removed. The above rod body (
4) and pull it out toward the proximal side of the rod body (4), peel off the tape, and remove the rod body (4).
This forms an irregularly shaped part (5) that is integrated with the other parts. Then, the abutting mold (6) is removed, and a horizontal hole is opened in the fixed hood (a) between the fixed hood (a) and the leg support part (b) of the irregularly shaped part (5) as shown in Fig. 10. In addition to providing (7),
A pair of guide grooves (8) (8) for guiding the movable pushing body of the reel attachment in the length direction of the rod body are provided on both sides of the leg support (b). In the case of this embodiment as well, it is possible to reliably prevent the core (3) from moving in the tangential direction with respect to the core metal (1) when winding the prepreg.
3) and the core metal (1), unlike the conventional method, there is no concave stepped portion between the rod body (4) and the irregularly shaped portion (5) of the fishing rod after molding. It is not possible.

(Effects of the Invention) As described above, according to the present invention, in addition to the core metal (1) whose diameter increases in a tapered shape from the distal end toward the base end, the core metal (1)
) is used, the core (3) has a bulge that bulges outward in the radial direction with respect to the outer peripheral surface of the rod (1), so the irregularly shaped part (5 ) on one side of the outer peripheral surface of the core metal (i).
1) A fitting groove (2) extending in the length direction and having a groove bottom continuous at least on the distal end side is provided, and the core (3) can be moved relative to the fitting groove (2). Since the core (3) is fitted to form the irregularly shaped portion (5), it is possible to reliably prevent the core (3) from shifting in the circumferential direction when the prepreg is wound. It is possible to prevent the formation of concave grooves at the joint between 4) and the irregularly shaped part (5), and it is possible to efficiently manufacture a fishing rod that is highly durable and has a good appearance.

[Brief explanation of drawings]

Fig. 1 is a partially omitted perspective view of only the core showing an embodiment of the manufacturing method of the present invention, Fig. 2 is a partially omitted perspective view of only the core, and Fig. 3 is a partially omitted perspective view of only the core.
The figure is a cross-sectional view of the manufacturing process by winding prepreg.
The figures are a cross-sectional view taken along the line IV-rV in FIG. 3, a partially omitted cross-sectional view of a fishing rod manufactured by the manufacturing method of the present invention, FIG. An explanatory diagram showing the manufacturing method of
-IX sectional view, Figure 10 is a sectional view of only the main parts of the fishing rod manufactured by the manufacturing method shown in Figure 7, Figure 11 is Figure 10
I-X I line sectional view, Figure 12 is Figure 10 X■-X■
FIG. (1)... Core metal (2)... Fitting groove (3)... Core (31)... Swelling part (4)... Rod body... irregularly shaped part

Claims (1)

[Claims] 1) A method of manufacturing a fishing rod having an irregularly shaped part, in which a length of the core bar (1) is set on one side of the outer peripheral surface of the core bar (1) whose diameter increases in a taper shape from the distal end to the base end. A fitting groove (2
), and in this fitting groove (2), a core (3) having a bulging portion (31) that bulges radially outward with respect to the outer circumferential surface of the core metal (1) can be moved relative to the outer peripheral surface of the core metal (1). Fit this core (3)
A prepreg made of high-strength fiber impregnated with synthetic resin is wrapped around the outer periphery of the core bar (1), and the rod body (4) is formed by pressure firing, and then the core bar (1) is wrapped around the rod body. (4) and the core (3) are extracted, and then the core (3) is extracted from the rod body (4) to form a deformed part (5) that is integrated with the rod body (4). A fishing rod manufacturing method characterized by: