Guzheng soundboard bending and shaping die device

Abstract

The utility model discloses a Chinese zither soundboard bending and shaping die device which comprises a bending die and a shaping structure. The bending die is composed of an upper die and a lower die, a cavity matched with the bent shape of the zither soundboard is formed between the upper die and the lower die, and the bending die is used for applying uniform bending force to the heated and softened zither soundboard to form the needed bent shape. The shaping structure comprises tensioning belts and a pressing device, the tensioning belts are arranged on the two sides of the bent zither soundboard, the pressing device presses the tensioning belts, and the bent shape of the soundboard is kept. According to the device, the heating, bending and shaping processes are accurately controlled, the machining precision and efficiency are remarkably improved, and the consistency of the sound quality effect of the soundboard is ensured. Besides, the device has the advantages of being high in adaptability, easy to maintain and upgrade, environment-friendly, energy-saving and the like, can be adjusted according to the shape, size and material of the zither soundboard, and meets the processing requirements of different types and specifications of soundboards.

Description

Technical Field

[0001] This utility model relates to the field of musical instrument manufacturing technology, specifically a special device for bending and shaping the soundboard of a guzheng after softening. It aims to improve the processing efficiency of the guzheng soundboard, ensure the sound quality of the soundboard, and provide strong support for the research on the material properties, acoustic characteristics testing, and manufacturing process optimization of the guzheng soundboard. Background Technology

[0002] The guzheng, a traditional Chinese musical instrument, is beloved for its beautiful tone and rich expressiveness. The soundboard is a crucial component of the guzheng, significantly influencing its timbre and sound quality. Traditionally, softening the soundboard during processing relies on heating devices such as resistance wire heating or infrared heating. This not only increases equipment costs but can also damage the soundboard material or degrade its performance due to improper temperature control. Furthermore, it results in low processing efficiency and difficulty in ensuring consistent soundboard precision and tone quality. With the continuous development of musical instrument manufacturing technology, higher demands are placed on the processing precision and efficiency of guzheng soundboards. Therefore, a device capable of precisely completing the bending and shaping steps of the guzheng soundboard is needed to improve the processing quality and efficiency.

[0003] The soundboard of the guzheng, as the core resonating component for sound production, plays a decisive role in the sound quality due to its quality and craftsmanship. The soundboard's design requires maintaining a specific curvature, which necessitates softening and bending processes in the production process. In factory production, craftsmen typically soften the wood using direct open-flame heating and then bend it using their manual experience. However, this method has several problems: during softening, precise control of heating temperature and humidity is needed to ensure the stability and performance of the soundboard material; during bending, precise control of bending force, speed, and shape is required to prevent cracks or deformation; and during shaping, the bent shape of the soundboard must be maintained, and necessary treatments such as cooling and curing must be applied to ensure its stability and durability. However, existing factory equipment often cannot simultaneously meet these requirements, leading to instability and non-repeatability in the guzheng soundboard production process.

[0004] Furthermore, traditional manual methods are easily affected by factors such as the operator's skill level and work experience, leading to instability and non-reproducibility in the production results of guzheng soundboards. Therefore, there is an urgent need for a device for softening and bending guzheng soundboards to achieve precision and standardization in the soundboard processing, improve experimental efficiency and data reliability, and provide strong support for the research on material properties, acoustic characteristic testing, and manufacturing process optimization of guzheng soundboards. Summary of the Invention

[0005] To address the problems of low processing precision, low efficiency, and inconsistent sound quality in existing guzheng soundboard manufacturing processes, this utility model aims to provide a guzheng soundboard softening, bending, and shaping device. This device, through precise design, can achieve bending and shaping of the guzheng soundboard, improving processing precision and efficiency, and ensuring the sound quality of the soundboard. To achieve the above objectives, the guzheng soundboard softening, bending, and shaping device of this utility model includes a bending mold and a shaping structure. The bending mold is used to apply bending force to the heated and softened guzheng soundboard to form the desired bent shape; the shaping structure is used to fix the guzheng soundboard after bending to maintain its bent shape.

[0006] In a preferred embodiment, the bending mold includes an upper mold and a lower mold. A cavity matching the bending shape of the guzheng soundboard is formed between the upper and lower molds. When the heated and softened guzheng soundboard is placed on the bending mold, the upper and lower molds close, applying a bending force to the soundboard to form the desired bending shape. To ensure the uniformity and stability of the bending force, the contact surfaces of the upper and lower molds are designed as curved surfaces that match the shape of the guzheng soundboard, ensuring uniform stress on the soundboard during bending and avoiding cracks or deformation.

[0007] In a further preferred embodiment, the shaping mechanism includes a shaping belt and a clamping device. Shaping clamps are positioned on both sides of the bent guzheng soundboard to hold it in place; the clamping device presses down on the shaping clamps to maintain the bent shape of the guzheng soundboard. The design of the shaping clamps and the clamping device can be adjusted according to the shape and size of the guzheng soundboard to ensure the stability and reliability of the shaping effect. Furthermore, the clamping device can also employ an adjustable pressure design to accommodate guzheng soundboards of different materials and thicknesses.

[0008] Compared with existing technologies, the advantages or beneficial effects of this utility model are mainly reflected in the following aspects: Improved processing accuracy and efficiency. Through the combined use of the bending mold and the shaping structure, the bending and shaping of the guzheng soundboard can be achieved, reducing the difficulty and labor intensity of manual operation and improving processing efficiency and accuracy. Consistent sound quality. By precisely controlling the parameters and conditions of steps such as heating softening, bending, and shaping, the guzheng soundboard can maintain a consistent sound quality throughout the processing. This helps improve the overall sound quality and expressiveness of the guzheng, meeting people's high demands for guzheng timbre and sound quality. Strong adaptability. The guzheng soundboard softening, bending, and shaping device described in this utility model can be adjusted and optimized according to the shape, size, and material of the guzheng soundboard. At the same time, the design of components such as the bending mold and the shaping structure also has a certain degree of versatility and scalability, which can adapt to the processing needs of different types and specifications of guzheng soundboards. Easy maintenance and upgrades. All components and parts of the guzheng soundboard softening, bending, and shaping device described in this utility model adopt a modular design, facilitating disassembly and replacement. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the guzheng soundboard bending and shaping mold according to an embodiment of the present invention;

[0010] Figure 2 A three-dimensional structural diagram of the guzheng soundboard bending and shaping mold according to an embodiment of this utility model;

[0011] Figure 3 This is a partial cross-sectional view of the guzheng soundboard bending and shaping mold according to an embodiment of the present invention.

[0012] Reference numerals: 1. Upper mold; 2. Lower mold; 3. Cavity; 4. Tensioner; 5. Tensioning belt. Detailed Implementation

[0013] To better understand the technical features of this utility model, the following description, in conjunction with specific embodiments, will further illustrate this utility model.

[0014] It should be noted that the given embodiments are not intended to limit the scope of protection of this utility model. This embodiment provides a device for softening, bending, and shaping a guzheng soundboard, the structure of which is as follows: Figure 1 As shown.

[0015] The device includes components such as an upper mold 1, a lower mold 2, a cavity 3, a tensioner 4, and a tensioning band 5. The upper mold 1 is used to apply bending force to the heated and softened guzheng soundboard to form the desired curved shape; the tensioner 4 and the tensioning band 5 are used to fix the guzheng soundboard 1 after it is bent to maintain its curved shape.

[0016] The structure of the bending die is as follows Figure 3 As shown, the system includes an upper mold 1 and a lower mold 2. A cavity 3 is formed between the upper mold 1 and the lower mold 2, matching the curved shape of the guzheng soundboard 1. When the heated and softened guzheng soundboard is placed on the lower mold 2, the upper mold 1 and the lower mold 2 close, applying a bending force to the guzheng soundboard to form the desired curved shape. To ensure the uniformity and stability of the bending force, the contact surfaces of the upper mold 1 and the lower mold 2 are designed as curved surfaces that match the shape of the guzheng soundboard.

[0017] The structure of the fixed construction is as follows Figure 1 As shown, it includes a tensioner 4 and a tensioning band 5. The tensioning band 5 surrounds the outside of the lower mold 2 and is pressed by the force of the tensioner 4 to maintain the curved state of the guzheng soundboard.

Claims

1. A guzheng soundboard bending and shaping mold device, characterized in that, The application relates to a curved mould and a shaping structure, wherein the curved mould is used for exerting a bending force on a guzheng soundboard after the soundboard is heated and softened, so that the soundboard forms a required bending shape; and the shaping structure is used for fixing the guzheng soundboard after the soundboard is bent, so that the bending shape of the soundboard is kept.

2. The guzheng soundboard bending and shaping mold device according to claim 1, characterized in that, The curved mould comprises an upper mould and a lower mould, and a cavity matched with the bending shape of the guzheng soundboard is formed between the upper mould and the lower mould.

3. The guzheng soundboard bending and shaping mold device according to claim 2, characterized in that, The contact surface of the upper mould and the lower mould is designed as a curved surface matched with the shape of the guzheng soundboard, so that the soundboard is uniformly stressed during the bending process.

4. The guzheng soundboard bending and shaping mold apparatus of claim 1, wherein, The shaping structure comprises a tension belt and a pressing device, the tension belt is arranged on the mould wall of the bent guzheng soundboard and is used for clamping the guzheng soundboard; and the pressing device is used for pressing the tension belt, so that the bending shape of the guzheng soundboard is kept.

5. The guzheng soundboard bending and shaping mold apparatus of claim 4, wherein, The pressing device is designed to be adjustable in pressure, so as to adapt to guzheng soundboards of different materials and thicknesses.

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