Metal racket frame and laryngeal yoke body jointing forming method

Abstract

The process of forming yoke combining one metal racket frame and one throat includes the following steps: setting one metal racket frame formed through bending in the mold cavity of one mold with also one yoke mold cavity, setting forming resin fiber material inside the yoke mold cavity, closing the mold, and heating the mold to foam the resin fiber material inside the yoke mold cavity for filling the yoke mold cavity and forming one yoke closely combined with the metal racket frame.

Description

technical field [0001] The present invention relates to a metal racket frame, more specifically, to a yoke body cavity formed into a yoke by heating, foaming, and solidifying a yoke body cavity in a mold by using a resin foam fiber material. The invention discloses a combined molding method of the metal racket frame of the body and the throat yoke body. Background technique [0002] Please refer to FIG. 1 and FIG. 2 , the yoke body of the existing metal racket frame 10 is formed mainly by wrapping a foam body 20 in a carbon fiber material 21, and horizontally cutting both ends of the carbon fiber material 21 to extend to the hair. The two ends of the foam body 20 are formed to form the upper and lower clamping ends 211. After that, the foam body 20 covered with the carbon fiber material 21 is placed between the two inner sides of the end 11 of the metal racket frame 10. At the same time, the clamping ends at both ends are used. 211 is wrapped around the two inner sides of t...

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Problems solved by technology

[0003] However, in the processing process of the existing metal racket frame 10, the foamed body 20 does not have any combination with the metal racket frame 10 after foaming, and its function is only to make the carbon fiber material of the outer layer 21 is stretched and molded in the mold cavities 311 and 312 of the yoke body, so only a kind of supporting filler material is provided when the yoke body is molded, and the contact with the metal racket frame 10 is only flat and does not have any bonding strength at all. Therefore, the combination between the yoke body and the metal racket frame 10 is mainly achieved by using the clamping ends 211 on both sides of the carbon fiber material 21 to wrap and wrap the two sides of the end 11 of the metal racket frame 10 through thermosetting molding. However, now There are many shortcomings in the process of combining the yoke body and the metal racket frame 10, which need to be improved urgently, which are described in detail as follows:

[0004] 1. In order to achieve the purpose of combining the existing yoke body and the metal racket frame 10, the clamping ends 211 on both sides of the carbon fiber material 21 must be cut first, and then the clamping ends 211 on both sides must be covered on the metal racket frame 10 In this way, in addition to increasing the complicated steps in the processing process, the thickness of the carbon fiber material 21 wrapping on both sides of the metal frame 10 is also increased. Although the combination between the yoke body and the metal frame 10 can be provided, the yoke body After molding, the weight of the carbon fiber material 21 cladding and the processing cost of increased raw materials and complicated procedures are also increased, and it is difficult to achieve the disadvantages of light weight and cost reduction of the racket

[0005] 2. As mentioned in the previous item, please refer to Figure 3, the two sides of the carbon fiber material 21 are pre-wrapped with the metal racket frame 10 and then put into the mold 30, but the upper and lower mold cavities 311 , 321 are set according to the frame diameter specification of the metal racket frame 10. At this time, since the carbon fiber material 21 and the metal racket frame 10 are pre-wrapped and coated, the thickness is greater than the size of the upper and lower mold cavities 311, 321. Therefore, when it is intended to be placed into the lower mold cavity 321 for positioning, it is difficult to insert it, and when the upper and lower molds 31, 32 are molded together, the upper mold cavity 31 is easily squeezed to the inner and outer edge positions of the carbon fiber material 21. , so that the side edges of the carbon fiber material 21 on both sides of the metal racket frame 10 are deformed due to extrusion and clamped between the clamping surfaces 313 of the upper and lower molds 31, 32, resulting in the occurrence of yarn clamping 314. This yarn clamping 314 situation Because of each processing, the upper and lower molds 31, 32 are rubbed by the carbon fiber material 21 for a long time. In addition to the fact that the upper and lower molds 311, 321 cannot be completely sealed when they are closed, the mold is abnormal It is easily damaged, which greatly reduces the service life of the mold. At the same time, the position of the parting line after the metal racket frame 10 and the yoke are combined and formed is not accurate, and there are too many burrs, and secondary processing and trimming for the burrs is required, which only increases the complexity of the process. and coster of secondary processing

[0006] 3. The metal racket frame 10 is pre-integrated with the carbon fiber material 21, please refer to Fig. 1, at this time, the carbon fiber material 21 will be pulled by wrapping the metal racket frame 10 on both sides. The middle position is slightly straight, so when the metal racket frame 10 is placed in the lower mold cavity 321 for positioning, the shape of the yoke mold cavity 322 has a large curvature (as shown in Figure 2 ), so the carbon fiber material 21 must be pulled into a shape relative to the yoke cavity 322 by the operator, so that it can be smoothly placed in the yoke cavity 322. Wrapped around the fixed position of the metal racket frame 10, if the operator applies improper force, it is very easy to cause the weaving tightness of the carbon fiber material 21 to become loose due to pulling, which will also have a great impact on the strength of the formed yoke , and the drawing-in-molding method using human experience, in addition to increasing the difficulty and complexity of processing, it also has great doubts about the unreliability of the yoke body after molding

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