JPS5896522A - Manufacture of fiber reinforced plastic article - Google Patents

Abstract

PURPOSE:To effectively obtain a lightweight, high-strength, and high-rigid ring using a required and minimum quantity of a fibers, by laminating helically a fiber impregnated with resin onto two discs, further laminating the fiber in the space between the discs and onto the circumferential sections thereof, and applying heat and pressure to the laminate to cause it to set. CONSTITUTION:The fiber 3 such as a carbon fiber is withdrawn from a bobbin 4, is impregnated with the thermosetting resin 6, and is helically wound on the surface of the circular mandrels 8 through an eye 7 of a traverser to be laminated thereon in a required thickness. Then the circular mandrels 8 are spaced at a prescribed interval, and the fiber 3 is wound into the space therebetween in a direction of the hoop, and is also wound on the circumferential sections thereof in the direction of the hoop and in a helical direction to be formed into a laminate. The laminate is removed from the filament winding apparatus, is introudced into a mold 9, and is heated under pressure to be set so that a ring having a T-sahpe in cross section is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a ring-shaped fiber-reinforced glass product having a T-shaped cross-sectional shape.

Conventionally, as shown in Fig. 1, the manufacturing of a ring consisting of a cylindrical part 1 and a radially reinforced disc part 2 around this cylindrical part has been carried out by inserting fibers vertically and horizontally as shown in Figure 1. A method in which a disk portion 28 made of fabric perpendicular to the fibers is impregnated with polyurethane resin, polyester resin, etc. is laminated by ring molding, and then heated and pressurized in an autoclave or mineral grease. Disc part 2b1i in which the fibers are pulled in one direction, soaked in resin kt, and then heated and dried to make the resin semi-hardened.
- Laminated molding using the above method and heating in a ring molding machine,
A pressurizing manufacturing method is used.

In the above manufacturing method, as shown in Fi@IrjA, it is very time consuming to make the fiber threads continue in the circumferential direction of the disk part 20 provided in the radial direction with respect to the cylindrical part l, and In order to ensure the strength and rigidity of the disc part 20, it is necessary to increase its wall thickness, so it is ultra-light and strong.
It has been difficult to effectively manufacture rings with high rigidity.

This invention was made in order to eliminate the drawbacks of the conventional ones as described above.
To provide a method for producing a fiber-reinforced glass product by making continuous fibers and effectively producing a single-piece, high-strength, yet rigid ring with the minimum necessary fiber threads.

An embodiment of the present invention will be described below with reference to the drawings.

Figure 4 shows fiber yarn 3 with resin 6 placed on a disc mandrel 8.
This shows the process of helical winding (diagonal winding) using the purple filament winding method, in which 3 fiber threads such as carbon fiber are pulled out from a bin 4, and the epoxy resin in the resin tank 5 is applied to the fiber threads 3. While controlling the thermosetting resin 6, which is used for adjusting the tension and expelling air bubbles, the disc is passed through the large diameter 7't of the traverser while controlling the tension, etc. Helical winding is performed on the surface of the mandrel 8 to obtain the required thickness.Next, two disk mandrels 8 on which three fiber yarns are laminated are stacked.
t-As shown in FIG. 5, they are arranged at a predetermined gap, and within this gap, fiber threads 3 coated with the same resin as shown in FIG. 4 are wound in the hoop direction. Thereafter, 3' ft of fiber yarns are laminated in the 7- and helical directions from above the fiber yarns 3 previously laminated on the outer periphery of the disc mandrel 8, as shown in FIG. . As the final step, the fiber yarn, that is, the composition laminated on the disk mandrel 8 is removed by the filament winding device, placed in the mold 9 as shown in Figure M7, and cured under pressure and heat to form a cross section with a single character. We can manufacture shaped rings.

Note that IO is a heating press machine. Figure 8 shows a completed ring-shaped fiber-reinforced plastic product.

In addition, in the embodiment, a ring having a circular platform has been described, but by using a mandrel having a square, triangular or other shape, rings of various shapes can be manufactured.

As described above, according to the present invention, it is possible to continuously arrange & pongee threads in the circumferential direction of the ring disc portion, so that i
It is possible to design a ring using fiber yarn with a minimum Ik.
It is possible to manufacture rings with super @ lids, high strength, and high rigidity. In addition, it is possible to fully utilize the advantages common to the filament winding method, such as uniformity of fiber tension, control of winding events, and economy associated with automation.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway fl+ view of a T-shaped ring in cross section, Figs. 2 and 3 are partially cutaway perspective views showing a conventional T-shaped ring laminated and molded from woven fabric, and Figs. 4 to 8. shows the manufacturing method according to this invention. Figure 4 is a perspective view of the process of layering fiber yarn t-m on a disk mandrel, Figure 5 is an explanatory diagram of laminating fiber yarn between mandrels in the hoop direction, and the sixth figure is a diagram of the process of layering fiber yarn t-m on a disk mandrel. I#r side view with fiber threads laminated on the outer periphery, Figure 7 is a cross-sectional view of the composition being pressurized and heated to harden using a mold, Figure 81
1 is the finished ring 1ITili. − is. l... Cylindrical part, 2... Disc part, 3... Fiber thread, 4
...Gopin, 6...Resin, 7...Large traverser, 8...Disc mandrel, 9...Mold, 10.
...Heating press machine. In addition, the same reference numerals in 9 indicate the same or corresponding parts. Agent Haku Kuzuno - Figure 1 + (1) Figure 8

Claims (1)

[Claims] This is a method for manufacturing a ring-shaped fiber-reinforced plastic snack product with a T-shaped cross-section, in which resin is soaked into two disks using a filament finding device, and Yukan fiber yarns are laminated in a helical direction. Discs are arranged with a gap between them, the fiber yarn is wound in the t-7 direction between the discs, and then the fiber yarn is laminated on the outer periphery of the disc. A method for producing a fiber-reinforced plastic product, which comprises removing the product, and finally heating and curing the composition while pressurizing it with a mold.