CN2200463Y - Forming device for fiber-reinforced thermoplastic composite racquet laminate - Google Patents

Abstract

The utility model relates to a forming device of fibrous thermoplastic resin combined material racket laminated material, including can placing the combined material laminated material who has made in the moulded die of its base, will laminated material press cover in the roller of the rolling press device of the template board side of base, and cover in at the end the moulded die will laminated material pressfitting location's the plywood that covers. The two shoulders of the prototype of the racket frame after being formed are connected with a connecting bridge in an assembling way, and the shoulders and the neck are sleeved with strengthening bodies.

Description

The utility model relates to a manufacturing device for a racket, in particular to a forming device for forming a laminated material of a racket made of fiber-reinforced thermoplastic resin composite material by means of cladding molding.

Fiber composite materials have gradually replaced alloy metal materials and become the main raw materials for sports equipment. The main reason is that fiber resin composite materials have low density, high specific strength and specific rigidity, good shock absorption and high plasticity, and can have larger designs. Space can create the most ideal sports equipment, such as various types of rackets are the most obvious examples. There are many types of rackets formed by fiber resin composite materials, and there are many types of rackets formed by each fiber resin composite material, and each fiber resin composite material has different characteristics, and can be aimed at the main characteristics of various sports equipment. Need to choose the type of fiber resin composite material.

The molding methods of fiber resin composite materials in the past include injection molding method, braided tape method, winding method and unidirectional prepreg, etc., wherein the fiber resin composite material suitable for the injection molding method belongs to the thermal resin type, and the said Fiber-resin composites formed by braiding, winding, and unidirectional prepregs include thermosetting and thermoplastic resins. Thermosetting refers to the property that the resin composite material will be hardened and shaped after being heated to the reaction temperature required by the hardener, while the thermoplastic fiber resin material will melt after being heated beyond its melting point, and will be cured after cooling to an appropriate temperature below the melting point. Hardening, thermoplastic resin materials have the characteristics of recyclability, but because the material is hard during molding, it is difficult to process, so thermoplastic materials are rarely used to make rackets. The characteristics of the fiber resin composites formed by the above molding methods are described as follows:

The processing speed of the injection molding method is fast, but its characteristics are limited to the use of short fibers, so the overall structure is poor, and the strength and rigidity are difficult to express, and it is usually only suitable for thermoplastic resins.

The processing speed of the braided belt method is medium. Although its characteristics can be used for long fibers, because the fiber weaving has a lattice mesh, the distribution of the resin on the fiber and in the mesh is not uniform, especially for high-viscosity fibers. It is even more serious for thermoplastic resins, making it difficult to physically exhibit high specific strength and high specific rigidity.

The processing speed of the winding method is also moderate, and its characteristics are similar to the braided method, only slightly better than the braided method.

The acceleration of unidirectional prepreg is slow, and its characteristic is that it has good fiber distribution and resin distribution, so its products can exert the characteristics of high specific strength and high specific rigidity, and are widely used in sports equipment and aerospace composite materials, but Thermoplastic prepreg boards are difficult to process due to the hardness of the material.

Nowadays, most fiber-reinforced thermosetting resin composite materials are used to manufacture rackets, and among them, the thermosetting resin composite materials formed by unidirectional prepreg are the most. There are three types of resin composite materials formed by injection molding, braided tape method and winding method to form rackets using thermoplastic resin composite materials; as for the thermoplastic resin composite materials formed by unidirectional prepreg materials as substrates. The racket has not yet been realized because of its high processing difficulty, but this type of thermoplastic resin composite material has good characteristics, so it still has a promising future.

The main purpose of this utility model is to provide a molding device for fiber-reinforced thermoplastic composite racquet laminates, to overcome the technical bottleneck of prepregs in lamination, and to form rackets with high specific strength and high specific rigidity. Layer material, and the degree of design freedom is higher.

The utility model is characterized in that the laminated material formed by thermoplastic prepreg is placed on the base of a molding die, and the laminated material is pressed on the base by a roller of a rolling device to form a racket frame shape, and then Use the cladding board of the forming mold to press and position the laminated material, and form the prototype of the racket frame, and then cover the prototype of the racket frame with connecting bridges and reinforcements to enhance the structural strength of the racket frame, and finally place the racket The frame prototype is formed by high temperature and high pressure, so that the laminated material, the connecting bridge and the reinforcement are fixed into one body, and a high-performance racket frame is made.

The molding device of the fiber-reinforced thermoplastic resin composite racket laminate provided by the utility model includes a molding die and a rolling device, and the molding die is composed of a base and two cladding plates, the top of the base There is a body plate matching the shape of the racket frame on the surface, and the rolling device is locked with two extension rods at the bottom of a movable bracket, and then a roller is locked at the end of the extension rod, and the roller can just extend at the base of the molding die. Place the laminate made of thermoplastic prepreg on the base of the molding die, just at the top side of the profile plate, and then move the rolling device so that the roller rolls the The laminated material is pressed down and moved along the side of the profile plate, and the laminated material is bent into the prototype of the racket frame; then the two cladding plates of the forming mold are moved to cover the base , and the laminated material is laminated and positioned, and after taking it out, it will be a frame prototype; then a connecting bridge is assembled between the two shoulders of the frame prototype, and it is sleeved on the shoulder and neck There is a reinforcing body; then the prototype of the racket frame assembled with the connecting bridge and the reinforcing body is placed in a mold, subjected to high temperature and high pressure, cooled for an appropriate time, and then taken out to make a finished racket frame of high-performance thermoplastic composite material.

After polishing, grinding, threading, etc., the finished racket frame above is a racket with good characteristics and bright appearance. The racket made by the utility model has a considerable design space, and the molding process can be easily automated. , consistency, and high practicability with industrial utilization value.

The utility model is described in detail below by preferred embodiment and accompanying drawing, in the accompanying drawing:

Figure 1 is a combination diagram of a molding device in a preferred embodiment of the present invention.

Figure 2 is a schematic diagram of the mold-feeding action of laminated materials in a preferred embodiment of the present invention.

Fig. 3 is a schematic diagram of the press-covering action of the molding device of the preferred embodiment of the present invention.

Fig. 4 is an exploded perspective view of the connecting bridge and the reinforcing body of the preferred embodiment of the present invention.

Figure 5 is a combined sectional view of the racket frame shoulder of the preferred embodiment of the present invention.

Figure 6 is a combination diagram of the finished racket frame of the preferred embodiment of the present invention.

The molding device of the fiber reinforced thermoplastic resin composite racket laminate of the present invention, its preferred embodiment is shown in Fig. 1, and it includes molding die 10 and rolling device 20, and its relevant position and structure feature are as follows:

The molding die 10 is composed of a base 11 and two cladding plates 12, 13. The base 11 is a plate-shaped body with an appropriate area, which is placed flat on the workbench. Body plate 111, the two cladding plates 12, 13 are located on the top surface of the base 11, the inner side is the pressing surface 121, 131 matching the shape of the body plate 111, and the two cladding plates 12, 13 are driven by the pressure cylinder 14. It can be separated or closed by the left and right sides.

The rolling device 20 is composed of a movable support 21, two extension rods 22 and two rollers 23. The movable support 21 is located at an appropriate distance from the top of the molding die 10, and a support rod 211 is extended on both sides. It can move back and forth along the front of the molding die 10 . The extension rod 22 is locked to the bottom end of the support rod 111 and has a cylindrical portion 221 with an appropriate length. A compression spring 222 is arranged inside the cylindrical part 221, and a bifurcated rod part 223 extends from the outer end of the compression spring 222, and the roller 23 is pivotally connected to the end of the rod part 223 of the extension rod 22. The bearing 231 enables the roller 23 to rotate, and the roller 23 can extend to the side of the shape plate 111 of the molding die 10 .

After the combination of the above-mentioned structures, the molding process of this embodiment is to first place the laminated material 30 made of winding thermoplastic prepreg on the base 11 of the molding die 10, at the base of the molding plate 111. top side, please refer to Fig. 2, and then move the rolling device 20, so that the roller 23 presses down the laminated material 30, and moves along the side of the shape plate 111, and the The laminated material 30 is bent and attached to the side of the profile plate 111 to form a prototype of a racket frame.

Please refer to FIG. 3, and then move the two cladding plates 12, 13 of the molding die 10 to cover the base 11, and press and position the laminated material 30 for molding. After taking it out, it becomes a Frame prototype 40. Then a connecting bridge 51 is assembled between the two shoulders 41 of the racket prototype 40 , and reinforcements 52 and 53 are sleeved on the shoulders 41 and the neck 42 . Please refer to FIG. 4 , the connecting bridge 51 is composed of upper and lower plates, and is embedded in the shoulder 41 of the racket prototype 40 by means of the supporting part 511, and the connecting part 512 with an appropriate curvature is in the middle. , cooperate with the racket frame to become a complete ellipse. The reinforcements 52, 53 are respectively sleeved on the shoulder 41 and the neck 42 of the frame prototype 40, and are also formed by covering the frame prototype 40 with upper and lower covers. Please refer to FIG. 5 for details. The shoulder reinforcement 52 covers the outer end of the support portion 511 of the connecting bridge 51 , and the neck reinforcement 53 combines the two handles 43 of the frame prototype 40 into one handle. Finally, put the racket frame 40 assembled with the connecting bridge 51 and reinforcements 52, 53 into the mold, undergo high temperature and high pressure, and take it out after cooling for an appropriate time. Please refer to Figure 6 to make a high-performance Finished racket frame in thermoplastic composite material.

The above-mentioned racket frame is processed by polishing, grinding, threading, etc., and it is a racket with good characteristics and bright appearance. The racket made by the utility model uses thermoplastic prepreg as material, and thermoplastic prepreg The material itself has excellent characteristics, and the prepregs are stacked into different laminated materials according to different fiber directions, which have different characteristics, so they have a high degree of design flexibility, and the utility model overcomes the problem of thermoplastic prepregs Due to the technical bottleneck of molding, it can be made into an ideal racket with high specific strength and high specific rigidity. In addition, it has a considerable design space, and can design and manufacture various high-performance rackets to suit various types of players. In addition, the process of forming the utility model can be easily automated and consistent, so it has high industrial application value.

To sum up, the molding device of the fiber-reinforced thermoplastic resin composite racket of the present invention uses the laminated material wound from unidirectional prepreg as the base material of the racket frame, and cooperates with the consistent molding device to make The steps of molding, pressing, strengthening and forming are completed automatically and consistently, and a racket frame with high specific strength and high specific rigidity is produced, which can fully exert the characteristics of the prepreg material in the manufactured racket, and The degree of design freedom is far beyond that of other materials.

Claims (2)

1. A molding device for a racket laminate made of fiber-reinforced thermoplastic resin composite material, characterized in that: A forming mold is composed of a base and two cladding plates, the base is a plate-shaped body, and the top surface is convexly provided with a profile plate matching the shape of the racket frame, and the two cladding plates are located on the top surface of the base and can be formed by The left and right sides are separated or closed, and the inner side is the pressing surface that matches the shape of the body plate: A rolling device is composed of a movable support, two extension rods and two rollers. The movable support is located at the top of the forming die and can move back and forth along the front of the forming die. The extension rods are locked The bottom end of the bracket is flexible, and the roller is pivotally connected to the end of the extension rod, and the roller extends to the side of the shape plate of the molding die. 2. The molding device of fiber-reinforced thermoplastic resin composite racket laminated material according to claim 1, characterized in that: the inside of the extension rod is provided with a device for telescopically moving the roller along the side of the template body of the molding mould. compressed spring.

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