Spherical carbon fiber spinning nozzle

Abstract

The utility model discloses a spherical carbon fiber spinning nozzle which comprises a spinning nozzle body, the spinning nozzle body is used for spinning production of viscose-based fibers and is in the shape of a round spherical surface, the round spherical surface of the spinning nozzle body is subjected to smooth treatment and is made of a 0.8 mm tantalum plate, a spinning surface is arranged on the spinning nozzle body, and the spinning nozzle body is provided with a spherical surface. 25020 spinneret micropores with the diameter of 0.05 mm are vertically distributed on the spinneret surface, and a spinning solution or a melt passes through the spinneret micropores. The device has high precision and high durability so as to meet the high standard of carbon fiber production.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber production equipment, in particular to a spherical carbon fiber spinneret. Background Art

[0002] Due to its superior properties such as high strength, light weight, and high modulus, carbon fiber has been relatively active in the domestic market in recent years. In addition to being used in aerospace, automotive, sports and other fields, it is also used in industries such as construction and wind power. As a key core component of carbon fiber precursor equipment, the spinneret relies on a large number of imported components to meet and ensure the quality of carbon fiber precursor. The reason is that on the one hand, domestic carbon fiber spinnerets rely on manual punching, and the output cannot meet the mass production of carbon fiber manufacturers. On the other hand, the quality of domestic spinnerets in all aspects does not meet the requirements, and there is a large gap compared with imported similar products, affecting the quality of the precursor.

[0003] In the existing carbon fiber production process, the durability and spinning efficiency of the spinneret have always been important considerations. To improve the durability of the spinneret, common practices are to treat its surface, such as hardening, coating, etc. However, these treatment methods often affect the heat conduction performance and spinning quality of the spinneret. Therefore, how to improve the spinning efficiency and product quality while ensuring the durability of the spinneret is the main technical problem faced in the current carbon fiber production field. Summary of the Utility Model

[0004] This application provides a spherical carbon fiber spinneret with high precision and high durability to meet the high standards of carbon fiber production.

[0005] A spherical carbon fiber spinneret provided by this application adopts the following technical solutions:

[0006] A spherical carbon fiber spinneret includes a spinneret body. The spinneret body is used for the spinning production of viscose-based fibers, and its shape is a circular sphere. The circular sphere of the spinneret body has been smoothed, and its material is a tantalum plate with a thickness of 0.8 mm. A spinning surface is provided on the spinneret body, and 25020 spinning microholes with a diameter of 0.05 mm are vertically distributed on the spinning surface. The spinning microholes are for the spinning solution or melt to pass through.

[0007] By adopting the above technical solutions, a spherical carbon fiber spinneret designed by the utility model, when in use, is mainly used for the spinning production of viscose-based fibers. Its outer shape is mainly designed as a circular sphere, and the circular sphere can withstand a large spinning pressure. A spinning surface is provided on the spinneret body, and 25020 spinning microholes with a diameter of 0.05 mm are vertically distributed on the surface of the spinning surface. The number and diameter of the spinning microholes have been strictly designed to better enable the spinning solution or melt to pass through. Therefore, the spinning solution or melt can pass through.

[0008] Preferably, the spinneret body has strong compressive resistance and can withstand a large spinning pressure without being easily deformed.

[0009] By adopting the above technical solution, during use, the spinneret body is made of a material with strong compressive resistance, so that the spinneret body can withstand a large spinning pressure without being easily deformed.

[0010] Preferably, the surface of the finished spinneret body is coated with a DLC diamond-like carbon film.

[0011] By adopting the above technical solution, during use, a DLC diamond-like carbon film is coated on the surface of the finished spinneret body, thereby improving various properties of the spinneret body.

[0012] Preferably, the DLC diamond-like carbon film can enhance the surface hardness of the spinneret body, improve the corrosion resistance, and thus extend the service life.

[0013] By adopting the above technical solution, during use, the DLC diamond-like carbon film is coated on the surface, which can improve the surface hardness and corrosion resistance of the spinneret body.

[0014] Preferably, the surface roughness of the spinneret surface reaches Ra0.05 after polishing.

[0015] By adopting the above technical solution, during use, the spinneret surface has undergone high-precision polishing treatment, so that its surface roughness reaches Ra0.05, ensuring the smoothness during the spinning process.

[0016] Preferably, the wall roughness of the spinneret micropores has a high machining precision, and the wall roughness of the high-precision machining helps to improve the filament forming quality of the carbon fiber precursor.

[0017] By adopting the above technical solution, during use, the wall roughness is strictly controlled, and the spinneret micropores are machined with high precision to improve the filament forming quality of the carbon fiber precursor.

[0018] Preferably, the perpendicularity of the straight holes of the micropores of the spinneret is precisely machined to ensure the filament forming quality.

[0019] By adopting the above technical solution, during use, the perpendicularity of the straight holes of the micropores of the spinneret is precisely machined, improving the filament forming quality of the carbon fiber precursor.

[0020] Preferably, the spinneret micropores are evenly distributed on the spinneret surface, and the distance between the spinneret micropores is designed within a predetermined range without affecting its use.

[0021] By adopting the above technical solution, when in use, the spinneret micropores are processed and evenly distributed on the spinneret surface, and the distances between the spinneret micropores are designed to ensure that the use of the spinneret micropores is not affected.

[0022] In summary, this application has the following beneficial effects:

[0023] 1. The spherical carbon fiber spinneret designed in this utility model adopts 0.8mm tantalum plate as the material of the spinneret body, and is smoothed to make it have strong pressure resistance and can withstand large spinning pressure without deformation, thereby improving the durability of the spinneret;

[0024] 2. The spherical carbon fiber spinneret designed in this utility model preferably uses a DLC diamond-like carbon film coating. Due to the high hardness and high corrosion resistance of the DLC diamond-like carbon film, it can enhance the surface hardness of the spinneret body and improve corrosion resistance, thereby further extending the service life of the spinneret. At the same time, the high-precision spinneret surface and spinneret hole design significantly improve the quality of the carbon fiber precursor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an embodiment;

[0026] Figure 2 A schematic structural diagram showing a spinning surface in an embodiment;

[0027] Explanation of the accompanying symbols: 1. Spinneret body; 2. Spinning surface; 3. Spinning micropores; 4. DLC diamond-like carbon film. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below with reference to the accompanying drawings. Like components are denoted by like reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," "lower," "bottom," and "top" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0029] Example 1

[0030] This embodiment discloses a spherical carbon fiber spinneret, referring to Figure 1 and Figure 2, including a spinneret body 1, the spinneret body 1 is used for the spinning production of viscose-based fibers, and its shape is designed to be a round spherical surface, and the round spherical surface has been smoothed. This design makes the spinneret body 1 not easy to deform when subjected to a large spinning pressure. The material of the spinneret body 1 is 0.8mm tantalum plate. This material has strong compressive resistance and can withstand the high pressure during the spinning process without being easily damaged. In order to further enhance the durability of the spinneret, the surface of the finished spinneret body 1 is also coated with a layer of DLC diamond-like carbon film 4. This film layer not only enhances the hardness of the surface of the spinneret body 1, but also improves its corrosion resistance, thereby effectively extending the service life of the spinneret.

[0031] A spinning surface 2 is provided on the spinneret body 1. This spinning surface 2 has undergone high-precision polishing so that its surface roughness reaches Ra0.05, ensuring the smoothness of the spinning process. At the same time, a number of spinning micropores 3 with a diameter of 0.05 mm are vertically distributed on the spinning surface 2. These micropores are for the spinning solution or melt to pass through. It is worth mentioning that the number of these spinning micropores 3 is precisely designed to be 25020 to ensure the uniformity and efficiency of the spinning process.

[0032] The processing precision of the spinneret microholes 3 is very high, and the roughness of the hole wall is strictly controlled to improve the spinning quality of the carbon fiber precursor. At the same time, the verticality of the spinneret microholes 3 is also precisely processed to ensure that the spun carbon fiber is of high quality. These spinneret microholes 3 are evenly distributed on the spinneret surface 2, and the distance between them is carefully designed within a predetermined range to ensure that they do not affect each other during the spinning process, thereby ensuring the stability and quality of the spinning.

[0033] The implementation principle of Example 1 is as follows: during the carbon fiber production process, the viscose-based fiber spinning solution or melt is extruded through the spinneret micropores 3 on the spinneret body 1 to form fibers. Since the spinneret body 1 adopts a circular spherical design and is smoothed, it can withstand a large spinning pressure and ensure the stability of the spinning process. At the same time, the high-precision spinneret surface 2 and spinneret hole design make the spun carbon fiber precursor high-quality, meeting the requirements of high precision and high durability. The coating of the DLC diamond-like carbon film 4 further enhances the durability of the spinneret and improves production efficiency.

[0034] Example 2

[0035] The difference between this embodiment and Embodiment 1 is that the number of spinneret micropores 3 can be different. Although the number of spinneret micropores 3 in Embodiment 1 is 25,020, according to actual production requirements, the number of spinneret micropores 3 can be adjusted within a certain range. For example, the number of spinneret micropores 3 can be increased or decreased to adapt to different spinning speeds and production scales. After adjusting the number of spinneret micropores 3, it is still necessary to ensure the uniform distribution and precise processing of the spinneret micropores 3 to ensure the spinning quality and stability.

[0036] Embodiment 3

[0037] The difference between this embodiment and Embodiment 1 is that the material of the spinneret body 1 can be different. Although a tantalum plate with a thickness of 0.8 mm is selected as the material of the spinneret body 1 in Embodiment 1, other materials with similar properties can also be selected according to actual production environment and cost considerations. For example, other metal or alloy materials can be used to make the spinneret body 1, as long as these materials can meet the requirements of compressive resistance and corrosion resistance during the spinning process. After replacing the material, it is still necessary to perform subsequent processing such as smoothing treatment and DLC diamond-like carbon film 4 coating on the spinneret to ensure its performance and service life.

[0038] Embodiment 4

[0039] This embodiment discloses an improved spherical carbon fiber spinneret, which is further optimized on the basis of Embodiment 1. Specifically, the processing technology of the spinneret micropores 3 is optimized to improve the smoothness and perpendicularity of the pore walls. By adopting more advanced processing technologies and equipment, the processing accuracy and consistency of the spinneret micropores 3 can be further improved, thereby improving the quality of the spun carbon fiber precursor filaments. In addition, the coating process of the DLC diamond-like carbon film 4 can also be optimized to improve the uniformity and adhesion of the film layer, further enhancing the durability of the spinneret.

[0040] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A spherical carbon fiber spinneret, characterized in that: It includes a spinneret body (1) which is used for the spinning production of viscose-based fibers, with a round spherical shape. The round spherical surface of the spinneret body (1) is smoothed, and its material is a tantalum plate with a thickness of 0.8 mm. A spinning surface (2) is provided on the spinneret body (1), and 25,020 spinning micropores (3) with a diameter of 0.05 mm are vertically distributed on the spinning surface (2). The spinning micropores (3) allow the spinning solution or melt to pass through.

2. The spherical carbon fiber spinneret according to claim 1, wherein: The spinneret body (1) has strong compressive resistance and can withstand a large spinning pressure without being easily deformed.

3. The spherical carbon fiber spinneret according to claim 1, wherein: The surface of the finished spinneret body (1) is coated with a DLC diamond-like carbon film (4).

4. The spherical carbon fiber spinneret according to claim 3, characterized in that: The DLC diamond-like carbon film (4) can enhance the surface hardness of the spinneret body (1), improve the corrosion resistance, and thus extend the service life.

5. A spherical carbon fiber spinneret according to claim 1, characterized in that: The surface roughness of the spinning surface (2) reaches Ra0.05 after polishing.

6. The spherical carbon fiber spinneret according to claim 1, characterized in that: The wall roughness of the spinning micropores (3) has a high machining precision, and the high-precision wall roughness of the pores helps to improve the filament formation quality of the carbon fiber precursor.

7. A spherical carbon fiber spinneret according to claim 1, characterized in that: The perpendicularity of the spinning micropores (3) of the spinneret body (1) is precisely machined to ensure the filament formation quality.

8. A spherical carbon fiber spinneret according to claim 1, wherein: The spinning micropores (3) are evenly distributed on the spinning surface (2), and the distance between the spinning micropores (3) is designed within a predetermined range without affecting its use.

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