JPS621902Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to a fishing rod formed from a sheet in which a carbon fiber serpentine scrim sheet is superposed on a carbon fiber aligned sheet. Conventionally, 0.08 to 8 carbon fibers were formed by aligning 1,000 to 12,000 carbon fibers of 6 to 8 and impregnating them with epoxy, polyester, or phenolic resin.
When using a 0.20mm thick carbon fiber alignment sheet as reinforcing fiber for fishing rods, it improves workability when winding it around the core metal, improves radial crushing strength, and adjusts rod tension over a small range. The applicant of the present invention has disclosed in Japanese Patent Publication No. 52-43409 that an ultra-thin scrim sheet with a thickness of 0.01 to 0.06 mm made of plain weave glass fibers is superposed on one side of the alignment sheet in order to adjust the temperature. ing. However, when trying to form a strong, large-diameter fishing rod by polymerizing an ultra-thin glass fiber scrim sheet made of a plain weave with fiber bundles evenly distributed in the vertical and horizontal directions and a thick carbon fiber aligned sheet, it is necessary to Since there is no reinforcement of the transverse fibers in proportion to
Reinforcement against crushing was insufficient. If a glass fiber woven fabric that is thicker than the scrim sheet is used to strengthen the lateral reinforcement, the fishing rod becomes heavier and its strength-elastic modulus decreases. Also, an ultra-thin scrim sheet made of carbon fiber is considered, but due to the nature of carbon fiber, when processed into woven fabric, it is possible to make a relatively thick 0.1 mm or more thick scrim sheet, but it is mainly used as an ultra-thin scrim sheet. The current situation is that it is currently difficult to develop a material with a thickness of 0.01 to 0.06 mm, which is within the range of 0.01 to 0.06 mm, both technically and in terms of quality. However, in recent years, there has been a demand for fishing rods that are lighter in weight and have further improved performance such as rod condition and strength. Therefore, in view of the above-mentioned current situation, this invention was developed by processing the material of the ultra-thin scrim sheet, which polymerizes when using a carbon fiber alignment sheet, which is advantageous in terms of reinforcement structure, into a sheet that is effectively reinforced in a certain direction with carbon fiber. Furthermore, the purpose is to provide a fishing rod in which the reinforcing fiber of the rod rod is made of 100% carbon fiber, and the carbon fiber alignment sheet is impregnated with a thermosetting resin and has fiber bundles aligned in the axial direction of the rod rod. A serpentine fiber scrim sheet, in which carbon fiber bundles meandering in irregular shapes in the rod rod axis direction are laminated to a substantially uniform thickness, is polymerized, and the polymerized sheet is wrapped around a core metal and cured, and then the core metal is The gist of this is that it is pultruded and molded. Therefore, the present invention will be specifically described in detail, as well as experimental examples and examples using the drawings. The carbon fiber serpentine scrim sheet of the present invention is 6
8 to 8 long carbon fibers are made into a bundle of 1000 to 12000 fibers, impregnated with a thermosetting resin, and then meandered in a fixed direction in an unspecified shape on a release paper using a DRY or WET method. The scrim sheet is laminated to a substantially uniform thickness as a whole, and after the impregnated resin is semi-dried, the release paper is peeled off to form an ultra-thin scrim sheet with a thickness of 0.01 to 0.06 mm (fabric weight 10 to 50 g/m ² ). The feature of this meandering fiber scrim sheet as a reinforcing sheet is that if the meandering direction is the longitudinal direction, more fiber bundles are stacked in the lateral direction, so the reinforcing effect in the lateral direction is superior to that in the longitudinal direction, and each fiber is Since the bundles are stacked diagonally, the fibers are reinforced in the diagonal direction as well, and the openings between the fiber bundles are also prevented. This is a big difference compared to conventional glass fiber plain woven scrim sheets or short fiber nonwoven fabrics, which have uniform reinforcing direction in the vertical and horizontal directions. Furthermore, since the fiber bundle is made of long fibers, reinforcement against tensile stress can be achieved more effectively than a sheet in which short fibers are laminated in an undefined direction in the form of a non-woven fabric. In addition, in terms of processing, it can be easily formed from ultra-thin to thick sheets by simply adjusting the amount of lamination. Therefore, as an auxiliary reinforcing sheet that is used by polymerizing with the main reinforcing sheet, the above-mentioned various characteristics can be used. Overall, this scrim sheet is superior to conventional glass fiber plain woven scrim sheets and short carbon fiber nonwoven fabrics. Next, to explain the arrangement when winding the above-mentioned alignment sheet made of carbon fiber and meandering scrim sheet around the core metal, in the alignment sheet, the alignment fibers are approximately parallel to the core metal as in the past. The serpentine scrim sheet is wound to provide reinforcement in the axial direction of the rod rod, and the serpentine scrim sheet is wound by arranging the fiber bundle in a meandering manner in the axial direction of the core bar. In this case, the narrower the meandering pitch, the more the fiber bundles are perpendicular to the core metal and are wound in the circumferential direction, thereby reinforcing the crushing strength in the radial direction when formed into a rod rod. can be done mainly. Furthermore, as the large number of meandering fiber bundles progress in one direction, each of them has many intersection points and intersects diagonally, thereby uniformly reinforcing the torsional strength of the rod rod in the left and right directions, and also improving the mesh opening during processing. It also has a preventive effect. The overlapping of the meandering scrim sheet with the aligned sheet may be over the entire surface or only partially for the convenience of adjusting the rod tension. Here, we will compare and display the strength test results of rod rods made by polymerizing ultra-thin glass fiber scrim sheets and carbon fiber meandering scrim sheets into carbon fiber prepreg sheets.

[Table] (1) Materials used Carbon fiber aligned prepreg sheet Carbon fiber weight 135 g/m ² Thermosetting epoxy resin impregnated Carbon fiber meandering scrim sheet Carbon fiber weight 12 g/m ² Meandering angle Average 45° to the axial direction, heat Ultra-thin glass fiber scrim sheet impregnated with curable epoxy resin Glass fiber weight 24g/m ² (2) Core metal used 1000 Straight (3) Structure Polymerized sheet of carbon fiber serpentine scrim sheet and carbon fiber aligned sheet Length (axial direction) Size: 650 mm Width: 170 mm After molding the rod, cut 25 mm at each end. Polymerized sheet of glass fiber scrim sheet and carbon fiber alignment sheet is the same as above (4) Experimental method: 4-point bending test with 2-point support and 2-point load Span 500mm head speed 25mm/sec Average value for each 5 pieces Next, an embodiment of the present invention will be explained with reference to the drawings. Impregnated with thermosetting epoxy resin and applied in the axial direction of the rod rod.
A semi-dry carbon fiber alignment sheet 1 in which fiber bundles of 1000 to 12000 filaments are arranged in a uniform manner has 1000 to 12000 filaments meandering in an irregularly sized shape extending in the rod axis direction.
A serpentine scrim sheet 2 with a thickness of 0.01 to 0.06 mm (carbon fiber 10 to 50 g/m ² ), which is made by laminating carbon fiber bundles of 12000 filaments to a substantially uniform thickness using a DRY method, is polymerized, and the polymerized sheet 3 is attached to a core bar 4. The wound polyester tape is used to bind and wind the rod, heat-treated by a conventional method, and the core metal 4 is pulled out and molded to form a fishing rod. Since the present invention is constructed as described above, it improves workability by preventing openings when winding the carbon fiber alignment sheet around the core metal, and the meandering scrim sheet is effectively reinforced in the circumferential direction of the rod rod. This provides sufficient protection against radial collapse. In addition, since the reinforcing fiber sheet can be made entirely of carbon fiber, the weight of the fishing rod can be reduced, and the rod condition, which is the lifeblood of a fishing rod, can be further improved. Even for large-diameter fishing rods for which conventional ultra-thin glass fiber scrim sheets have insufficient reinforcement against crushing, it is possible to mold fishing rods with sufficient reinforcement against crushing while suppressing increases in wall thickness and weight. Furthermore, since carbon fibers with the same elastic modulus are used in the process of molding fishing rods, bending does not occur during the curing stage, and it has excellent characteristics such as excellent interlayer adhesion even during long-term use.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a state in which a polymer sheet of a carbon fiber aligned prepreg sheet and a carbon fiber serpentine scrim sheet is wound around a core bar according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken from FIG. 1 A to A. 1...Carbon fiber aligned sheet, 2...Meandering scrim sheet, 3...Polymerized sheet, 4...Core metal.

Claims (1)

[Scope of utility model registration request] A meandering structure in which carbon fiber bundles meandering in an irregular shape in the direction of the rod rod axis are laminated to a substantially uniform thickness on a carbon fiber alignment sheet impregnated with a thermosetting resin and arranged to align the fiber bundles in the rod rod axis direction. A fishing rod characterized in that a fiber scrim sheet is polymerized, the polymerized sheet is wound around a core metal, hardened, and then the core metal is pulled out and molded.