JPS6357227B2 - - Google Patents

Description

[Detailed Description of the Invention] Conventionally, carbon fiber alignment sheets have been developed in order to most effectively utilize the excellent properties of carbon fiber in improving the strength and repulsion of fishing rods, and to facilitate adjustment of the fishing rod condition. Alternatively, a method of forming a fishing rod material by wrapping a woven fabric around the outer layer is known from Japanese Patent Publication No. 52-27068.

In order to form a fishing rod material made of fiber-reinforced resin according to these conventional methods, a fiber-reinforced resin-impregnated sheet is wrapped around a core bar, cellophane tape is tied in a spiral shape on the outer circumferential surface, heat-cured, and then left at room temperature. After cooling, pull out the core and remove the cellophane tape by polishing. As a result, spiral-shaped uneven binding marks are left on the outer circumferential surface of the material due to the difference in thickness of the cellophane tape, but when painting the surface of the material, a process of polishing and smoothing the surface is required. All or part of the fiber layer wound on the outermost layer will be scraped off.

Therefore, if a very expensive carbon fiber material is disposed in the outermost layer, it will result in expensive waste and has disadvantages such as being more difficult to polish than the glass fiber material that has been widely used in the past.

In the present invention, only the part where the surface of the material needs to be smoothed by polishing the uneven binding marks of the cellophane tape, that is, only one turn of the outermost layer, is made into a glass fiber layer, and the second layer becomes a carbon fiber layer. When all or part of the outermost glass fiber layer is polished, the second layer carbon fiber material is placed at or near the surface,
A glass fiber-reinforced sheet impregnated with a thermosetting resin is arranged as an inner layer on the core bar, and an aligned sheet or woven fabric of carbon fiber impregnated with a thermosetting resin is arranged as an outer layer of the fiber-reinforced sheet. Furthermore, the outermost layer is impregnated with a thermosetting resin and a glass fiber sheet with a thickness of 0.08 mm or more after curing is arranged and wrapped, and the tape is then bound and wound in a conventional manner and after curing treatment, the core metal is wrapped. The gist of this method is to peel off the drawing sheet and polish the outermost glass fiber layer.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4. One side of a 0.12 mm thick glass fiber woven fabric 1 impregnated with thermosetting epoxy resin or polyester resin is coated with thermosetting epoxy resin. Alternatively, a 0.13 mm thick carbon fiber aligned sheet 2 impregnated with polyester resin is arranged so that its edges are polymerized,
Furthermore, one side is impregnated with thermosetting epoxy resin or polyester resin to form the outermost layer of 0.12 mm.
A thick glass fiber woven fabric 3 is arranged so that the edges overlap to form a single sheet, and is wound around a core metal.
Next, wrap the cellophane tape 4 in a conventional manner, raise the temperature in a hot air oven so that it reaches 140℃ in 30 minutes, heat it for 2 hours, complete hardening, gradually cool it down, and leave it to cool naturally for 30 minutes. Peel off fan tape 4.

During heating and hardening in a hot air oven, the resin-impregnated glass fiber fabric 7, which was initially 0.12 mm thick and wound around the core metal, becomes fluidized and resin flows from the gaps between the cellophane tapes. Upon completion of curing, a lamination thickness of approximately 0.08 mm is formed, which is sufficient as the polishing allowance necessary to smooth out the spiral-shaped uneven binding marks caused by binding with cellophane tape. Then, as the final process for the material, the outer surface is painted and finished.

In the present invention, the means for arranging the glass fiber impregnated with a thermosetting resin in the outermost layer is not limited to the example, but as shown in FIGS. 8 to 9 of the example, the glass fiber impregnated with a thermosetting resin The winding end end may be attached to the upper surface of the glass fiber woven fabric 7, and the carbon fiber aligned sheet or woven fabric 8 may be superimposed and wound at the same time. Alternatively, each sheet is wound separately, that is, a glass fiber woven cloth impregnated with a thermosetting resin is wound around a core bar in advance, and then a carbon fiber aligned sheet/woven cloth is wound around the core metal. It can also be constructed by winding a glass fiber cloth at the end. As for the material of the reinforcing fiber sheet laminated from the third layer to the inner layers, fibers such as carbon, glass, and organic fibers may be used alone or in combination.

Since the present invention is configured as described above, the carbon fiber reinforced sheet/woven fabric is placed near or on the surface, so the excellent properties of carbon fiber can be most effectively utilized to obtain the strength and repulsive force of the fishing rod. It is also excellent in that it can easily perform the process of polishing the uneven surface on the outer periphery of the cover material without wasting expensive carbon fibers.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the embodiment, Fig. 2 is a sectional view taken along the line A-A of the embodiment, Fig. 3 is a sectional view before the outermost layer is polished, Fig. 4 is a sectional view after the outermost layer is polished, and Fig. 5 is a sectional view of the embodiment. 6 is a sectional view after the tape has been removed, FIG. 7 is a sectional view after polishing the outermost layer, FIG. 8 is a plan view of the embodiment, and FIG. 9 is a B- of the embodiment. B cross-sectional view 1, 3... Glass fiber woven fabric impregnated with thermosetting resin, 2... Carbon fiber impregnated with thermosetting resin, 4... Cellophane tape, 5... Spiral-like unevenness Bondage marks.

Claims (1)

[Claims] 1 A carbon fiber aligned sheet or woven fabric in which a glass fiber reinforced sheet impregnated with a thermosetting resin is arranged as an inner layer on a core metal, and the outer layer of the fiber reinforced sheet is impregnated with a thermosetting resin. Then, the outermost layer is impregnated with thermosetting resin and the thickness after curing is 0.08 mm.
A glass fiber sheet with a diameter of mm or more is arranged and wound, and the tape is then bound and wound using a conventional method, and the coin-treated core bar is pulled out and the tape is peeled off.
A fishing rod manufacturing method characterized by polishing the outermost glass fiber layer.