Xiao formed by carbon fiber composite material

Abstract

A flute formed by a carbon fiber composite material belongs to tubular musical instruments and is provided with a cylindrical tube body, the tube body is provided with holes, the cylindrical tube body is composed of a fiber cloth inner layer, a fiber-reinforced main body layer, a fiber cloth outer layer and a surface paint layer from inside to outside in sequence, the fiber cloth inner layer and the fiber cloth outer layer are made of 3K and 330g / m < 2 > twill-woven carbon fiber prepreg cloth, and the surface paint layer is made of a surface paint layer. The fiber-reinforced main body layer is a prepreg formed by mixing fibers and resin according to a set proportion, the fibers are carbon fibers, the resin is epoxy resin, the weight ratio of the carbon fibers to the epoxy resin is 50-70: 50-30, and the length-diameter ratio of the cylindrical tube body is (30-45): 1. The raw materials are easy to obtain, the production efficiency is improved, the finished product has higher stability and durability, and constancy of the shape and the tone quality in long-term use is ensured.

Description

Technical Field

[0001] The utility model relates to a flute formed of carbon fiber composite materials and belongs to the field of tubular musical instruments. Background Art

[0002] Traditional flutes and xiaos have historically relied on specific types of natural bamboo, a reliance that not only limits production diversity but also places extremely high demands on the quality and type of bamboo. The ideal bamboo must be of a certain age, texture, density, and dryness, which limits the availability of raw materials and increases costs. In addition, the natural properties of bamboo mean that it is susceptible to environmental factors such as humidity and temperature, which can limit the lifespan of the flute or xiao and result in poor sound quality stability. In high humidity or changing climate conditions, bamboo is prone to deformation and cracking, which in turn affects the overall performance and tone of the instrument. Summary of the invention

[0003] The utility model aims to provide a flute formed of a carbon fiber composite material. The flute formed of the material not only has easy access to raw materials and improved production efficiency, but also has higher stability and durability of the finished product, ensuring the constancy of shape and sound quality during long-term use.

[0004] The technical solution of the utility model is: a flute formed of carbon fiber composite material, with a cylindrical tube body, a hole is arranged on the tube body, and the cylindrical tube body is composed of a fiber cloth inner layer, a fiber reinforced main body layer, a fiber cloth outer layer and a surface paint layer from inside to outside.

[0005] The inner and outer layers of the fiber cloth are 3K and 330g / m 2 Twill woven carbon fiber prepreg.

[0006] The fiber-reinforced main body layer is a prepreg made by mixing fibers and resin in a set ratio, the fibers are carbon fibers, and the resin is epoxy resin.

[0007] The aspect ratio of the cylindrical tube is 30-45:1.

[0008] The 3K, 330g / m 2 Twill-woven carbon fiber prepreg is a commercially available product.

[0009] The fiber used in the fiber-reinforced main body layer of the utility model is carbon fiber, and can also be one or more fiber combinations such as aramid fiber, glass fiber, basalt fiber, bamboo fiber, etc.

[0010] The resin described in the utility model is epoxy resin, and may also be polyurethane resin, vinyl resin and the like.

[0011] The carbon fiber composite material molded flute described in the utility model is also suitable for flutes. Because flutes and flutes are both tubular instruments with the same structure. The differences between flutes and flutes are all existing technologies, that is, the difference between flutes and flutes is the length of the cylindrical tube body, the aperture, and the position of the sound holes. Flute is usually designed with a shorter length and a smaller aperture, which is suitable for fast music rhythm and bright timbre. In contrast, the flute is designed with a longer tube body to produce a deeper and more resonant sound. Therefore, flutes and flutes are products with similar structures in the same field.

[0012] In order to overcome these limitations and improve the production efficiency and performance of musical instruments, the utility model uses advanced carbon fiber to make flutes or Xiaos. Among them, carbon fiber composite materials have been widely used in many fields such as aviation, automobiles and sports equipment due to their excellent strength and stability high modulus. The use of carbon fiber composite materials can bring important advantages to the design and manufacture of musical instruments, especially for instruments such as flutes or Xiaos.

[0013] The advantages of the utility model are: 1. Reducing dependence on natural bamboo: Traditional musical instrument manufacturing has strict requirements on specific types of natural bamboo, while the use of fiber composite materials can reduce dependence on bamboo and reduce the difficulty and cost of obtaining raw materials.

[0014] 2. Improve the stability and durability of musical instruments: Fiber composite materials have excellent strength, high modulus and stability, and are not prone to deformation or cracking under environmental factors such as humidity and temperature changes, thereby improving the stability and durability of musical instruments and extending their service life.

[0015] 3. Maintain consistency in sound quality: Fiber composite materials are highly resistant to environmental factors and can maintain the consistency of the sound quality of musical instruments in various environments. They are not affected by factors such as humidity and temperature, and provide stable and lasting tone effects.

[0016] 4. Provide design flexibility and improve timbre effects: The use of fibers brings greater flexibility to the design and manufacture of musical instruments, and can achieve new designs and improved timbre effects that are difficult to achieve with traditional materials. For example, by adjusting the type and composition of fibers, processing technology, lamination method, density, modulus and other different material properties, different timbre characteristics can be customized to meet different performance requirements.

[0017] 5. The use of fiber composite materials to make flutes and Xiao can effectively solve the material limitations and performance deficiencies faced by traditional production methods, bringing new development opportunities and possibilities to musical instrument manufacturing.

[0018] 6. The manufacturing method of the utility model is innovative on the basis of the traditional flute and Xiao manufacturing process. The use of fiber composite materials not only improves production efficiency, but also ensures the quality and performance of the Xiao. Through the fine decoration process, it has a unique aesthetic in appearance. At the same time, the accurate punching process ensures its excellent sound quality. This innovative production method that combines tradition and modernity is expected to bring improvements to the production and performance of flutes, Xiaos and other wind instruments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the appearance diagram of the Xiao of the utility model.

[0020] Figure 2 yes Figure 1 Rear view of.

[0021] Figure 3 yes Figure 1 AA cross-section diagram.

[0022] Figure 4 yes Figure 3 A partial enlarged view of .

[0023] In the figure, 1 is a fiber cloth inner layer, 2 is a fiber-reinforced main body layer, 3 is a fiber cloth outer layer, and 4 is a surface paint layer. DETAILED DESCRIPTION

[0024] The utility model is a flute among tubular musical instruments, which is a flute formed of carbon fiber composite materials. The flute among tubular musical instruments is also suitable for the flute manufacturing method of the utility model.

[0025] The flute formed of carbon fiber composite material described in the utility model has a cylindrical tube body with holes. The utility model is characterized in that the cylindrical tube body is composed of a fiber cloth inner layer 1, a fiber-reinforced main body layer 2, a fiber cloth outer layer 3, and a surface paint layer 4 from inside to outside. Traditional flutes and xiao main bodies are made of natural bamboo. The utility model reduces the dependence on natural bamboo and reduces the difficulty and cost of obtaining raw materials.

[0026] The fiber cloth inner layer 1 and the fiber cloth outer layer 3 described in the utility model are 3K, 330g / m 2 Twill woven carbon fiber prepreg, 3K, 330g / m 2 Twill-woven carbon fiber prepreg is a commercially available product.

[0027] The fiber-reinforced main layer material is a prepreg layer formed by mixing fibers and resins in a set ratio. The fibers selected in this embodiment are carbon fibers, but are not limited to carbon fibers. They can also be a mixture of one or more fibers such as aramid fibers, glass fibers, basalt fibers, and bamboo fibers. The resin selected in this embodiment is epoxy resin, but is also not limited to epoxy resin. Polyurethane resin, vinyl resin, etc. can also be selected.

[0028] The weight ratio of carbon fiber to epoxy resin is: carbon fiber 63, epoxy resin 37. The carbon fiber prepreg used is a commercially available product.

[0029] The cylindrical tube body has an aspect ratio of 30 to 45:1 according to different sound quality requirements. The preferred aspect ratio of this embodiment is 40:1. The flute made in this embodiment has a hole diameter of 20mm and a length of 800mm. The cylindrical core mold is made of metal material.

[0030] The method for making a flute using the above technical solution comprises the following steps:

[0031] 1) Material selection: Select the raw materials for the inner layer of fiber cloth, the fiber-reinforced main body layer, the outer layer of fiber cloth, and the surface paint layer of the flute;

[0032] 2) Prepare the core mold: The core mold is cylindrical in shape; this embodiment is made of metal materials, and can also be made of epoxy resin and natural materials such as bamboo; the core mold not only plays a key role in supporting the molding of carbon fiber composite materials, but also its design ensures the accuracy and consistency of the final product. After the core is made, first apply a release agent on its surface;

[0033] 3) Laying the inner layer of fiber cloth: Lay 1-2 layers of fiber cloth inner layer raw materials on the core mold; the inner layer of fiber cloth can enhance the tensile strength and rigidity of the structure, ensure the smoothness of the inner surface of the flute, and contribute to the stable flow of airflow, thereby optimizing the sound quality.

[0034] 4) Laying the fiber-reinforced main layer: Start the tube rolling machine, slowly rotate the main layer material from one end of the core mold to the other end, and overlap and lay it on the core. The main layer material is laid in 30 layers in sequence. During the laying process, the tube rolling machine automatically calculates the number of layers laid through its programming control system, and ensures that each layer is evenly covered without gaps. After reaching the required number of layers, the tube rolling machine automatically stops laying, and then uses a clamp to temporarily fix the interface between layers before curing to prevent interlayer sliding or deformation. Finally, after the laying is completed, a visual inspection is carried out; the laying of the main layer can also adopt a variety of molding schemes, including fiber winding process, automatic fiber placement process, pultrusion molding process, etc., which can achieve uniform distribution of fiber materials, comprehensive coverage, and ensure that there are no defects such as wrinkles and bubbles.

[0035] 5) Covering the surface of the fiber-reinforced main layer with 1-2 layers of fiber cloth outer layer to obtain a blank;

[0036] 6) Curing: Wrap the blank with a vacuum heat shrink bag or a vacuum bag, place it in an oven and gradually heat it from room temperature to 80°C and keep it warm for 30 minutes, then gradually heat it to 130°C and keep it warm for 90 minutes, and then gradually cool it to room temperature to complete the curing. The tube prepared with the bamboo core mold can be cured at room temperature with room temperature resin;

[0037] 7) Surface treatment: After curing and demoulding, use sandpaper to carefully polish the surface of the tube to make the surface flat and smooth, and then apply a surface paint layer to the surface to enhance the aesthetics and durability; Surface paint layer: Use water-based epoxy resin varnish, which is not only environmentally friendly and easy to construct, but also effectively improves the appearance gloss and protective performance of the finished product, so that the instrument can better resist bumps and scratches in daily use.

[0038] 8) Punching: According to the predetermined hole position plan, the pipe body is accurately punched by hand or mechanical processing methods. To ensure the best sound quality and performance, the hole position design fully considers the sound quality optimization and playing convenience.

Claims

1. A flute made of carbon fiber composite material, having a cylindrical tube body with a hole, characterized in that: The cylindrical tube body is composed of a fiber cloth inner layer, a fiber-reinforced main body layer, a fiber cloth outer layer, and a surface paint layer from the inside to the outside. The fiber cloth inner layer and the fiber cloth outer layer are 3K, 330g / m 2 The twill woven carbon fiber prepreg cloth, the fiber-reinforced main body layer is a prepreg made by mixing fibers and resin in a set ratio, the fibers are carbon fibers, and the resin is epoxy resin.

2. A flute made of carbon fiber composite material according to claim 1, characterized in that: The cylindrical tube has a length-to-diameter ratio of 30 to 45:1.

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