TW201532795A - Manufacturing method of composite material vehicle wheel frame using fiber braided hose - Google Patents

Abstract

The present invention uses braided hose as the main material for producing vehicle wheel frame. The central axis of the braided hose is parallel to the axial direction of the wheel frame, thereby forming axial symmetry structure. In addition, the opening diameter of the braided hose can be adjustable to match with the variation of wheel frame diameter, so that it can perfectly fit with the contour of the wheel frame and will not produce wrinkle on the braided product. After properly laying braided hose on the mold to form a preform, resin matrix can be impregnated by resin transfer molding or vacuum-assisted resin infiltration forming to form a composite material vehicle wheel frame structure with high structural strength.

Description

Method for manufacturing fiber braided tube in composite vehicle wheel frame

The invention relates to a method for manufacturing a fiber braided tube in a composite vehicle wheel frame.

Due to energy shortages and climate anomalies, countries all over the world are willing to focus on energy conservation and carbon reduction issues and related research and development; especially in large-scale vehicles such as vehicles necessary for daily life, and in various components of vehicles, When the vehicle is multiplied by the moment of inertia, the weight loss benefit is most obvious, and because the weight of the rim is reduced, the vehicle handling can be improved, and the vibration of the body can be reduced to improve the comfort. The rim material for vehicles has been converted from steel to aluminum alloy. At present, it is developing towards lighter fiber reinforced composite materials, and the functional fibers used are mainly carbon fiber. Some characteristics require that it can be used. Pull fibers or fiberglass, or mix them to increase their toughness or reduce costs. However, due to the different materials design and manufacturing techniques, it is not possible to directly convert the metal wheel structure into a composite wheel frame. Other fiber-reinforced composite materials have successfully developed bicycle rims, but their load is relatively low, so the structural design is different from the vehicle rim. In general, fiber reinforced composites process technology is based on laminated technology, and the material is mainly fiber cloth or fiber prepreg. It is conceivable that when it is to be rolled into round tubes with different diameters (the basic type of wheel frame) When the wrinkles of the fiber cloth are generated, the fiber cloth must be cut to overcome the wrinkles, and there is a problem of fiber discontinuity. Another core problem is that for the axial center, the interlaced fibers are laid up to the differently sized composite tubes, and the angle of the laminated fibers will always change, and the symmetrical structure cannot be produced. Single bundle fibers or small wide unidirectional sheet prepregs are It is possible to use a winding or automatic lamination method to produce a symmetrical fiber replenishing structure according to the design angle, but it is very difficult to manufacture. Fiber reinforced composites are oriented in a continuous direction Sexuality is the basic principle of reinforcement. Traditional composite laminates or fiber cloth pre-forms have difficulties and limitations in the application and production of wheel rims. In view of the above shortcomings, the present invention is mainly directed to composite wheel frames. In the method, it is proposed to use a braided tube as a main material, and then inject a resin substrate by a resin transfer molding method or a resin infiltration molding method to form a high-strength composite material structure, which can overcome the problems encountered in the prior art.

In view of the above disadvantages of the prior art, it is a primary object of the present invention to provide a method of manufacturing a fiber braided tube as a vehicle wheel frame. The braided tube is a tubular fabric woven from biaxial fibers, and the diameter of the tube can be varied to some extent by adjusting the interlacing angle (for example, a braided tube of 18 inches can be changed from 16 inches to 20 inches). Therefore, for different diameter rims, it is possible to design a suitable braided tube structure, and the optimum fiber interlacing angle with structural requirements, and to exert the best reinforcing effect of the composite fiber.

The manufacturing method comprises: providing a male seat and a female mold to assemble the combined mold; inserting the fiber braided tube into the combined mold; injecting the combined mold of the fiber braided tube into the resin molding and forming; removing the finished product by removing the mold . The manufacturing method can make the central axis of the braided tube parallel to the axial direction of the wheel frame, and thus can form an axisymmetric structure.

The fiber braided tube has an adjustable opening diameter, which can be adjusted according to the change of the diameter of the wheel frame, so that the shape of the wheel frame can be completely adjusted according to the shape of the wheel frame without wrinkles of the fabric. If the part needs to be reinforced, it can be bundled with the unidirectional fabric to increase the axial structural strength. The number of layers of the braided tube depends on the structural strength requirement and is not limited to one layer. If the wheel frame structure has vertical axial reinforcing ribs, the fiber braiding tube can also be pushed into the gap between the male seat and the female seat to form a rib structure. The rib structure is also axisymmetric with respect to the central axis of the wheel frame. In this design, the braided tube with the outer layer that does not break into the gap can ensure its bonding.

The above fiber preforming method can be combined with resin transfer molding or vacuum assisted resin infiltration molding to inject resin into the fiber preform and join it. Synthetic high strength carbon fiber composite wheel frame.

This summary and the following detailed description and drawings are intended to further illustrate the manner, means and function of the present invention. Other purposes and advantages of this creation will be set forth in the following description and illustration.

1‧‧‧Combined mould

2‧‧‧woven belt

3‧‧‧One-way bundle fiber

S11~s14‧‧‧ is the step process

Figure 1 is a flow chart of a method for manufacturing a fiber braided tube in a composite vehicle wheel frame.

Fig. 2 is a structural view of a wheel frame of a fiber braided tube in a composite vehicle wheel frame manufacturing method.

The embodiments of the present invention are described below by way of specific examples, and those skilled in the art can understand the other advantages and advantages of the present invention from the disclosure.

Please refer to FIG. 1 and FIG. 2 , which are respectively a flow chart and a wheel frame composition method for manufacturing a fiber braided tube in a composite vehicle wheel frame according to the present invention. As shown in the figure, the present invention is a fiber braided tube used in the present invention. A method for manufacturing a vehicle wheel frame for a composite material, comprising: step 1 (s11) providing a male seat and a female mold to assemble the combined mold 1; and step 2 (s12) to fabricating the fiber braided tube (2) The unidirectional bundling fiber is added to the inserting mold (1), and the unidirectional bundling fiber can be used for the wheel frame structure having the vertical axial reinforcing ribs, and the fiber braiding tube can be pushed into the gap between the male seat and the female seat. And the rib structure (3) is formed to be reinforced, the fiber braided tube (2) fiber may be a combination of carbon fiber, glass fiber, kewei fiber, and the above fiber; step 3 (s13) will be inserted into the fiber braided tube (2) a combination mold, the number of layers of the fiber braided tube may be one or more layers (1) injected into a resin molding and forming, the resin may be a PU resin, and an epoxy resin, and the resin injection method may be a resin Transfer molding or vacuum assisted resin penetration Forming, and the formation method can be formed into a high temperature in the oven, or placed in a room temperature, or placed in a vacuum pressure furnace and external pressure to form; step 4 (s11) demoulding to remove the finished product.

The above-described embodiments are merely illustrative of the features and functions of the present invention, and are not intended to limit the scope of the technical content of the present invention. Any person skilled in the art can modify and change the above embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this creation should be as listed in the scope of the patent application described later.

S11~s14‧‧‧ is the step process

Claims (7)

A fiber braided tube is used in a method for manufacturing a vehicle wheel frame for a composite material, and the manufacturing method thereof comprises the following steps: Step 1: providing a male seat and a mother mold to assemble the combined mold; Step 2: inserting the fiber braided tube into the combination The mold is reinforced with a unidirectional bundle of fibers; Step 3: The combined mold of the fiber braided tube is injected into the resin and formed into a resin; Step 4: The mold is removed and the finished product is taken out. A fiber braided tube according to claim 1, wherein the fiber braided tube fiber is a carbon fiber, a glass fiber, a Kevlar fiber, and a combination of the above fibers. . As described in claim 1, wherein the number of layers of the fiber braided tube can be one or more layers. As described in claim 1, wherein the unidirectional bundling fiber can be used for a wheel frame structure having vertical axial reinforcing ribs, the fiber braiding tube can be pushed into the gap between the male seat and the female seat to form a rib structure. . A fiber braided tube according to the first aspect of the invention is the method for producing a vehicle wheel frame for a composite material, wherein the resin is a PU resin, an epoxy resin, an unsaturated polyester resin or the like. A fiber braided tube according to the first aspect of the invention is the method for producing a vehicle wheel frame for a composite material, wherein the resin is injected in a manner of resin transfer molding or vacuum assisted resin penetration molding. A method for manufacturing a vehicle wheel frame for a composite material according to the invention of claim 1, wherein the method of forming the fiber braided tube can be formed at a high temperature in an oven or at room temperature. Can be placed in a vacuum pressure furnace plus external pressure