JPS60237929A - Production of fishing rod - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

(Technical field) The present invention relates to a method for manufacturing a fishing rod used for fishing, and in detail,
This invention relates to a method for manufacturing a fishing rod in which a connecting tube having a diameter larger than that of the rod body is integrally connected to the outer periphery of the proximal end of a hollow rod body that is inclined in a tapered manner. (Prior Art) Conventionally, as shown in the patent application filed by the applicant of the present invention on December 5, 1981, a core bar for forming a joint tube having a fitting body at one end via a stepped portion was provided. After fitting the proximal end of the hollow rod body previously formed with the eleventh repreg made of high-strength fiber to the fitted body of the core bar, a second prepreg impregnated with a synthetic resin made of high-strength fiber is attached. , Wound around the core metal so that one end of the second prepreg overlaps with the outer periphery of the proximal end of the rod body, and pressurized and fired to integrally join the joint tube with a diameter larger than the rod body. A proposal has been made that has been successfully completed. However, in the case of this conventional manufacturing method, for example, cellophane tape is wound around the outer periphery of the second prepreg wound around the core metal for joint rIIi forming, and the wrapped second prepreg is heated in a heating furnace. When firing, a part of the synthetic resin in the second prepreg, which had softened in the early stages of firing due to the firing heat, was forced into the joint between the core metal and the rod body by the pressure applied by the 707 untape. At the same time, this pushing force causes the rod main body to move relative to the core bar in the detachment direction, creating a gap at the joint portion, and as a result, the rod body faces the joint portion of the high-strength fiber in the second prepreg. The portion is bent by the pressure applied by the cellophane tape,
Annular four parts are formed on the outer circumferential surface of the joint tube, and due to these four annular parts, the strength of the joint cylinder part of the fishing rod is extremely reduced, and there is a problem in that the appearance deteriorates. (Object of the Invention) The present invention was invented in view of the above points, and includes forming a bridging body that covers the joint between the core metal and the rod body, and using this bridging body to sinter the second prepreg. The present invention provides a core metal for forming a joint tube having a fitting body at one end. After fitting the proximal end of the hollow rod body preformed with the 11th repreg made of high-strength fiber (high-strength fiber) to the fitted body of the core bar, the high-strength fiber sheet was impregnated with synthetic resin @2. Wrapping the prepreg around the core metal such that one end of the gJ2 prepreg overlaps the outer periphery of the proximal end of the rod body,
A method for manufacturing a fishing rod in which a joint tube having a larger diameter than the rod body is integrally joined to the rod body by pressure firing, the rod body of the joint tube being connected to the base end of the rod body. A bridging body is formed to cover the vertical grain of the core metal and the hollow rod body, and has a long width extending inwardly from the overlapping part to the proximal inner blade part. The tangled body is connected to the outer circumferential surface of the proximal end of the rod body,
After the second prepreg is attached to the outer peripheral surface of the tip of the core bar and the joint part is covered, the second prepreg is pressurized and fired.
This is useful because it prevents a part of the preg from being pushed into the joint and prevents an annular recess from forming on the outer periphery of the joint tube. (Example) Examples of the manufacturing method of the present invention will be described below based on the drawings.

Core metal for molding the rod body with a molded part (21) of a size corresponding to the inner diameter of [1]

[2] and the rod body

[1] The molded part (4) has a size corresponding to the inner diameter of the larger diameter joint tube (3).
1), and a core metal (4) for forming a joint tube, which is provided with a fitting body (42) having a smaller diameter than the outer diameter of the base end of the rod body (1) at one end of the molding part (41) of the rod body (1). and a first prepreg (5) formed into a sheet by impregnating a sheet of high-strength fiber such as carbon fiber or glass fiber with a synthetic resin on the outer periphery of the core metal (2) for molding the rod body. Winding, this winding first
A cellophane tape (not shown) is spirally wound around the outer circumference of the first prepreg (5) and bound, and the wrapped first prepreg (5) is pressurized by the binding, and in this pressurized state, it is heated in a heating furnace. This heating causes the wrapped first prepreg (5
) is cured, and then the core bar (2) is removed and the cellophane tape is peeled off to form the rod body (1). After fitting the circumference to the fitting body (42J) of the core bar (4) for forming the joint cylinder, a 21st rib leg (6) made of a sheet of high-strength fiber impregnated with synthetic resin is formed, and this @2 prepreg (6
), the 21st libreg

[6] One end of the rod body (1
) The core metal for forming the joint tube (
4) Wrap it around the outer circumference of the rod and pressurize it to form the rod body.

[1] A joint tube (3) of a larger diameter is integrally joined to the rod body (1) by tapping. □The manufacturing method according to the present invention includes:
The length extends from the proximal end force of the rod body (1) to the proximal inner part that continues inwardly from the overlapping part (31) of the joint tube (6) to the rod body (1). , and the core metal (4
) and the hollow rod body (1), the bridging body (
7), and this bridging body (7) is attached to the rod body (1).
The proximal outer circumferential surface (11) of the metal core (4) and the distal outer circumferential surface (
43), and after covering the joint part (a), the @2 prepreg (6) was baked under pressure. The material shown in Figure 4.5 uses boron fibers that are even harder than the high-strength fibers commonly used as materials for fishing rods, such as carbon fibers and glass fibers, and is made of boron fibers with a delicate sheet. The 61st repreg impregnated with a synthetic resin forms the cut bridge body (7), and this bridge body (7) is used as the 4th repreg.
As shown in the figure, the bridging body (7) is superimposed on the inner side of one end of the second prepreg (6), and the proximal outer circumferential surface (11) of the rod body (1) fitted to the core metal (4) ) and the tip outer circumferential surface (43) of the core bar [4], and also apply the other side of the $2 prepreg (6) to the proximal outer circumferential surface of the core bar (4), and then The rod body (1) and the core metal for forming the joint tube (
4) while simultaneously rotating the bridging body (7) and the second prepreg (6) to the outer periphery of the base end of the rod body (1) and the core metal (
4) and wrap one ply around the second prepreg (6) to cover the joint part [a] with the bridging body (7).
) is connected to the rod body (1) via the bridging body (7).
] After the second prepreg (6) is further wound, cellophane tape (not shown) is spirally wrapped around the outer periphery of this wrapped 21st repreg (6). The wrapped second prepreg and bridging body (7) are pressurized by this binding, heated in a heating furnace in this pressurized state, and by this heating, the wrapped second prepreg and bridging body (7) are The synthetic resin in the body (7) is once softened and then hardened, and then the core bar (4) for forming the joint tube is removed, and the cellophane tape is peeled off to integrate it with the rod body (1). A joined joint cylinder (7) is formed.In addition, on the outer periphery of the joint cylinder forming core metal (4), there is a force on the outer peripheral surface of the non-contact part with the bridge body (7). A narrow reinforcing tape (8) made of carbon fiber impregnated with a synthetic resin is wound spirally, and the second prepreg (6) is wrapped around the outer periphery of this reinforcing tape (8) to form a joint tube ( A reinforcing layer is formed on the inner circumferential surface of the joint tube (3) to further increase the strength against crushing of the joint tube (3).When firing the second prepreg (6), the core metal (4) The joint between the rod body (1) and the rod body (1)

[a] is N-covered by the bridging body (7), so even if the synthetic resin in the second prepreg (6) softens in the early stage of firing, a part of the softened synthetic resin It is possible to reliably prevent the portion of the high-strength fiber in the second prepreg (6]I pushed into the joint (a) from bending that faces the joint (&). Furthermore, if the synthetic resin applied to the bridging body (7) softens in the early stage of firing, a portion of the synthetic resin may become attached to the joint (a).
), the bridging body (7) is made of boron fibers that have a higher hardness than high-strength fibers such as carbon fibers and glass fibers that are commonly used as materials for fishing rods. Therefore, due to the pressurization, the bridge body (7)
The part of the boron fiber facing the seam (&) does not bend.In the example described above, the bridge body (7) is polymerized into the second prepreg (6), Although it was wound together with the 21st repreg [6], the other bridging body (7) was wound with the 1M repreg [6].
2 Prepreg (6)! : May be wound with another IC. Also, the deletion bridge body

[7] In addition to using a sheet prepreg made of boron fiber as a base material, for example, a rollable metal plate, a metal tube, or a cylindrical prepreg made of boron fiber as a base material may be used. In addition, in the case of a cylindrical shape, one end of the bridge body (7), which has been cut from the wood before winding the 21st repreg (6), is attached to the outer circumferential surface of the proximal end of the rod body (1).

It fits into [11]. In addition, the joint tube (7) is a grip body having a tapered portion whose diameter increases at a rate of change greater than the rate of change of the diameter of the rod body (1), as shown in FIG. The structure is not particularly limited, and may be a short-tube joint that joins hollow rod bodies together, or a tapered rod body. In the embodiments described above, the rod main body (1) has its base end inner circumferential portion fitted into the fitting body (42) so as not to be relatively rotatable. In this case, as shown in the figure, a rotation preventing means such as a rotation preventing strip (22) is provided outside one end of the core metal (2) for molding the rod body, and the first prepreg (5) is attached to the core metal. (2), a part of the first prepreg (5) bites into the rotation stopper strip (22) and the rod body (1) is wound.
) on the inner periphery of the proximal end to form a rotation stopper (12), and on the outer periphery of the fitting body (42) there is a rotation stopper (44).
] is formed so that the rotation preventing strip (12) of the rod body (1) fits into the fitting body [42].By doing this, the second prepreg ( 6), the rod body (1) is wrapped around the core metal (4).
), the rod body does not rotate relative to

Due to the difference in outer diameter between [1] and the core metal (4), the rotational speed of the base end of the rod body and the core metal

Even if there is a large speed difference with the rotational speed of [4], the @2 prepreg (6) can be wound without shifting the rod body (1) in the circumferential direction with respect to the core metal (4), Therefore, it is possible to reliably prevent this 21st repreg (6) from being twisted and wound. Also, the handle (9) has a reel attachment part (91) on the tip side. (Invention [Effect] The present invention as described above provides a core metal for joint tube forming having a fitting body at one end, and a first tube made of high-strength fiber is provided in the fitting body of the core metal.
After fitting the base end of a hollow rod body previously formed with one repreg, a second prepreg made of a sheet of high-strength fiber impregnated with a synthetic resin is inserted so that one end of the second prepreg is connected to the base end outer periphery of the rod body. A method for manufacturing a fishing rod, in which a joint tube having a diameter larger than the rod body is integrally connected to the rod body by winding the core metal so as to polymerize and firing under pressure. The end force) has a long length that extends in a circular direction from the overlapping part of the joint tube to the rod body, and extends from the proximal end side to the overlapping part of the joint tube to the rod body, and one force is applied between the core metal and the hollow rod body. After forming a bridging body to cover the joint part and attaching this bridging body to the outer circumferential surface of the proximal end of the rod main body and the outer circumferential direction of the distal end of the core metal to cover the joint part, the second Since the prepreg is baked under pressure, when the second prepreg is baked under pressure, it is possible to reliably prevent the synthetic resin in the 21st repreg from being forced into the seam. It is possible to form a joint tube in which the high-strength fibers in the repreg do not bend, thereby preventing a decrease in the strength of the joint tube section, and maintaining a good appearance of the joint tube section.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a fishing rod manufactured by the manufacturing method of the present invention coupled to a handle, FIGS. 2, 3, and 5 are explanatory diagrams showing the steps of the manufacturing method of the present invention, and FIG. FIG. 1 is a partially omitted cross-sectional view of a fishing rod manufactured by the manufacturing method of the present invention. (1)...Pole body (11)...Proximal outer peripheral surface of the rod body (3)...Joint tube (31)...Overlapping part (4)...Core for forming the joint tube Gold (42)...Fitting body (5)...11th rib leg (6)...2nd prepreg (7)...Bridging body agent Patent attorney + dispatch... Side 4^ Procedural amendment (method) ) 1. Indication of the case Patent Application No. 249850 filed in 1982 2 Name of the invention Method for manufacturing a fishing rod 3 Person making the amendment Relationship to the case Application Address 3-77 Oimatsucho, Sakai City, Osaka Prefecture Name Name (24
3) Shimano Kogyo Co., Ltd. Representative: Shozo Shimano 4, Agent 〒590 6, Column for a brief explanation of the drawings in the specification subject to amendment (1) Akira! In the book IIl, on page 13, lines 9 to 10, "Fig. 3 and Fig. 5" is corrected to "Fig. 3, Fig. 4, and Fig. 5."

Claims (1)

[Claims] After providing a core metal for forming a joint cylinder having a fitting body at one end, and fitting the base end of a hollow rod body preformed from a first prepreg made of high-strength fiber strength into the fitting body of the core metal, The second prepreg, which is a sheet of high-strength fiber impregnated with synthetic resin,
The 21st repreg is wound around the core metal so that one end thereof overlaps with the outer periphery of the base end of the rod body, and the joint tube having a diameter larger than the rod body is integrally joined to the rod body by pressure firing. A method for manufacturing a fishing rod, wherein the length extending from the proximal end force of the rod body to the proximal inner part that continues inwardly from the overlapping part of the joint tube to the rod main body. forming a bridging body that covers the joint between the core metal and the hollow rod body, and applying this bridging body to the outer circumferential surface of the proximal end of the rod body and the outer circumferential surface of the tip of the core metal; A method for manufacturing a fishing rod, characterized in that the $2 prepreg is pressurized and fired after being mounted and the joint portion is covered.