JPS6353024B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a fishing rod, particularly a tip rod and a small diameter fishing rod.

Conventionally, in order to increase the elasticity and strength of fishing rods, a highly elastic and high-strength reinforcing fiber sheet such as carbon fiber was polymerized on a wrapping sheet such as glass fiber and wound around the core metal.
It is already known to manufacture fishing rods, but for tip rods and small-diameter rods whose elasticity varies greatly, it is simply a matter of simply wrapping reinforcing fiber sheets with the same ply on the front and back over the entire length of the fishing rod, as in the past. However, the elastic strength etc. are reinforced almost uniformly over the entire length of the fishing rod, and there is a drawback that the elastic strength etc. cannot be reinforced while maintaining the necessary tone as a tip rod or a small diameter rod, that is, the characteristic that the elasticity changes greatly.

The present invention relates to a method of manufacturing a fishing rod that improves such defects, and the present invention relates to a method for manufacturing a fishing rod that improves the above-mentioned defects. When the diagonally cut high-elasticity and high-strength thermosetting resin-impregnated reinforcing fiber alignment sheet is polymerized and placed and wound around the core metal, the width of the winding sheet is the diagonally cut portion of the reinforcing fiber alignment sheet. In addition to this, the main idea is to form the material with a wide width so that the thickness of the wrapped material is uniform.

To explain the method of the present invention in detail, the winding sheet 1, which is the main component of the fishing rod, is an aligned sheet or woven fabric of glass fiber or carbon fiber impregnated with a thermosetting resin such as epoxy resin, polyester resin, or phenol resin. The length of the fishing rod is made slightly longer so that after the rod body is molded, both ends can be cut to manufacture a specified fishing rod.

A reinforcing fiber alignment sheet 2 having a width equivalent to one ply at the base end is cut obliquely with the outer side toward the tip and superimposed on the inner surface of the winding sheet 1, and the reinforcing fibers Like the winding sheet 1, the pulling sheet 2 is impregnated with a thermosetting resin and is made of carbon fiber or boron fiber having higher elasticity and strength than the winding sheet 1.

Therefore, the width of the wrapping sheet 1 is formed by supplementing the diagonal cut portion a of the reinforcing fiber alignment sheet 2 for one ply and adding an extra width so that the thickness of the wrapping amount is the same. ing.

That is, if the winding sheet 1 and the reinforcing fiber alignment sheet 2 have the same wall thickness, it is sufficient to form the cutout part b wider by the diagonal cutout part a as shown in FIG.
When the thicknesses of the two sheets are not equal, for example when the thickness of the reinforcing fiber alignment sheet 2 is large, the cutout portion b is formed wider than the width of the diagonal cutout portion a as shown in FIG.

Further, this cutting portion b may be formed integrally with the winding sheet 1 in advance when cutting it as shown in FIGS. 1 and 3, or it may be formed separately from the winding sheet 1 as shown in FIG. It may be wrapped after being formed.

After the reinforcing fiber alignment sheet 2 is superposed and placed on the winding sheet 1 formed in this way, it is wound around the core bar 3, followed by binding treatment with tape, heat curing treatment, core bar removal treatment, and tape binding as usual. A fishing rod of a predetermined length is manufactured by performing a peeling process and cutting both ends.

As for the combination of fibers used in the winding sheet 1 and the reinforcing fiber alignment sheet 2, when carbon fiber is used in the winding sheet 1, boron fiber is used in the reinforcing fiber alignment sheet 2; When glass fiber is used for 1, it is preferable to use carbon fiber for reinforcing fiber alignment sheet 2.

Example A winding sheet made of a carbon fiber alignment sheet impregnated with a thermosetting epoxy resin with a wall thickness of 0.08 mm was cut to allow 5 plies at the leading end and 3 plies at the rear end to be wound around a core bar. A thermosetting epoxy resin-impregnated boron fiber aligned sheet with a wall thickness of 0.13 mm, excluding 15 mm from the tip and 25 mm from the rear end, starting from the 2nd ply at the tip and the 2nd ply at the rear end (0.8 ply at the tip and 1 ply at the rear end) (with the outer side diagonal) is polymerized and wrapped around a core bar, followed by tape binding, heat curing, core bar removal, tape peeling, and molding using conventional methods, and then the leading and trailing ends are cut. and manufacture fishing rods.

Example A winding sheet made of a carbon fiber alignment sheet impregnated with a thermosetting epoxy resin with a wall thickness of 0.08 mm was cut so that 3 plies at the leading end and 3 plies at the rear end could be wound around the core metal. Starting from the 2nd ply at the front end and the 2nd ply at the rear end, the same boron fiber alignment sheet as in the example is polymerized, and a thick layer is added to the outside edge of the above-mentioned winding sheet.
A carbon fiber alignment sheet impregnated with 0.08 mm thermosetting epoxy resin (a triangular sheet with 2 plies at the tip and 0.08 ply at the base) was pasted together and wrapped around the core metal, and the following was the same as in the example. A fishing rod is manufactured by processing.

Example A carbon fiber alignment sheet impregnated with thermosetting epoxy resin with a wall thickness of 0.13 mm was cut so that it could be wrapped around a core bar with 4 plies at the front end and 3 plies at the back end. Starting from the second ply at the end, a boron fiber alignment sheet similar to that in the example is polymerized, wound around a core metal, and molded in the same manner as in the example.

In the method of the present invention, when polymerizing a high-elasticity, high-strength reinforcing fiber alignment sheet with diagonal cuts on the outer side of the inner and outer sides of the wrapping sheet, the width of the wrapping sheet is supplemented by the cut portion of the reinforcing fiber alignment sheet. By adding a wide section and forming it wide so that the thickness of the winding amount is equalized, the elasticity and strength can be improved while maintaining the condition of tip rods and small diameter rods whose elasticity changes greatly, and it is possible to improve the elasticity and strength of the rod. It has an excellent feature that enables efficient manufacturing of homogeneous fishing rods with well-balanced strength.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the manufacturing process of the method of the present invention;
FIG. 2 is a sectional view taken along the line A-A in FIG. 1, FIG. 3 is a plan view of the manufacturing process of another embodiment of the method of the present invention, and FIG. 4 is a sectional view of the manufacturing process of another embodiment of the method of the present invention. It is. 1... Winding sheet, 2... Reinforcing fiber alignment sheet, 3... Core bar.

Claims (1)

[Claims] 1. On the inner surface of the wrapping sheet impregnated with thermosetting resin, a highly elastic and high-strength thermosetting resin-impregnated reinforcing fiber aligned sheet having a width of one ply at the base end and beveled on the outer side is polymerized. When placing it and wrapping it around the core metal, the width of the wrapping sheet is made wider by supplementing the diagonally cut portion of the reinforcing fiber alignment sheet so that the thickness of the wrapping amount is even. A fishing rod manufacturing method characterized by: