A matrix type double bottom plate bushing for glass fiber

Abstract

The application belongs to the technical field of glass fiber bushing plate and provides a matrix type double-bottom bushing plate for glass fiber, which comprises a bushing plate body and a bushing nozzle arranged on the bushing plate body for glass liquid to flow out for fiber drawing, wherein a plurality of the bushing nozzles are arranged in a triangular matrix in a staggered manner. The triangular matrix is composed of a plurality of arrangement units, and adjacent two arrangement units are arranged in a staggered manner, and the center distance of the corresponding bushing nozzles in adjacent arrangement units is equal. Thus, the application can overcome the defects of insufficient coating rate of the infiltration agent and high water content of the glass fiber in the prior art, and provides a glass fiber triangular matrix bushing nozzle staggered arrangement bushing plate. By optimizing the arrangement structure of the bushing nozzle, the uniformity of the glass fiber infiltration agent coating is improved, the rapid volatilization of the water in the infiltration agent is promoted, the water content of the drawn glass fiber is reduced, and thus the quality of the glass fiber product is improved and the production energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of glass fiber sprue technology, and more particularly to a matrix-type double-bottom sprue for glass fiber. Background Technology

[0002] In the glass fiber production process, the spinneret is one of the core pieces of equipment in the drawing process. The arrangement of its nozzles directly affects the forming quality of the glass fiber, the sizing agent coating effect, and the performance of subsequent products. Currently, most existing spinnerets use a square matrix arrangement of nozzles. This arrangement has the following drawbacks: First, the uniformity of the nozzle spacing is insufficient. The glass fiber bundles drawn from adjacent nozzles are prone to mutual interference, leading to uneven sizing agent coating in some areas and insufficient coating in others. This severely affects the sizing agent coating rate of the glass fiber, thereby reducing the bonding performance between the glass fiber and the resin. Second, with a square matrix arrangement, the gap distribution between the glass fiber bundles is unreasonable. After the sizing agent adheres to the glass fiber surface during the drawing process, the moisture is difficult to evaporate quickly, resulting in high moisture content in the glass fiber after drawing. This increases the energy consumption and time cost of subsequent drying processes. At the same time, excessive moisture content may also affect the storage stability of the glass fiber, easily leading to problems such as dampness and clumping.

[0003] In response to the above problems, the industry has tried to improve the situation by adjusting the nozzle aperture and optimizing the sizing agent formula, but it has not addressed the core structure of the nozzle arrangement, making it difficult to fundamentally solve the technical problems of insufficient sizing agent coating rate and high water content of glass fiber.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0005] To address the aforementioned shortcomings, the present invention aims to provide a matrix-type double-bottom plate sprue for glass fiber, which overcomes the defects of insufficient sizing agent coating rate and high water content in glass fiber caused by the square matrix arrangement of sprue nozzles in the prior art. It provides a sprue with a staggered arrangement of triangular matrix nozzles for glass fiber, optimizing the nozzle arrangement structure to improve the uniformity of sizing agent coating on the glass fiber, while promoting rapid evaporation of moisture in the sizing agent, reducing the water content of the glass fiber after drawing, thereby improving the quality of glass fiber products and reducing production energy consumption.

[0006] To achieve the above objectives, the present invention provides a matrix-type double-bottom plate spinneret for fiberglass, comprising: drain plate body; The leak nozzles are formed on the main body of the leak plate for the glass melt to flow out and be drawn into wires. Multiple leak nozzles are arranged in a staggered triangular matrix. The triangular matrix is ​​composed of multiple arrangement units, with adjacent arrangement units staggered and the center-to-center distance between corresponding leak nozzles in adjacent arrangement units being equal.

[0007] According to the fiberglass matrix-type double-bottom plate sprue of the present invention, the arrangement unit is an equilateral triangle structure, and the nozzle is located at the vertex of the triangle.

[0008] According to the fiberglass matrix-type double-bottom plate sprue of the present invention, the ratio of the side length of the equilateral triangle to the diameter of the sprue hole is 3:1 to 8:1.

[0009] According to the glass fiber matrix type double bottom plate sprue of the present invention, the outlet end of the sprue is provided with a guide slope to guide the glass melt to flow out smoothly.

[0010] According to the fiberglass matrix-type double-bottom plate stencil of the present invention, the misalignment distance between adjacent arrangement units is 0.3 to 0.7 times the side length of a single arrangement unit.

[0011] According to the glass fiber matrix type double bottom plate sprue of the present invention, the inlet end of the sprue is provided with a tapered guide cavity, the cross-sectional shape of which is conical or parabolic, to reduce the flow resistance of the molten glass and stabilize the flow rate.

[0012] According to the present invention, the glass fiber matrix type double-bottom plate sprue body includes an upper bottom plate and a lower bottom plate. The upper bottom plate is provided with a preheating channel, which is connected to the sprue inlet for preheating the glass melt that is about to flow out.

[0013] According to the fiberglass matrix-type double-bottom plate sprue of the present invention, the surface of the sprue body is coated with a high-temperature resistant and non-stick coating, and the coating material is a silicon nitride or silicon carbide composite material.

[0014] The fiberglass matrix-type double-bottom plate stencil according to the present invention further includes an airflow guiding device disposed below the stencil. The airflow guiding device includes a plurality of inclined guide plates for forming a directional airflow between the fiberglass bundles to accelerate the evaporation of moisture in the sizing agent.

[0015] The beneficial effects of this invention are as follows: This invention employs a triangular matrix staggered nozzle structure, which, compared to the traditional square matrix arrangement, results in a more uniform nozzle distribution. The fiberglass bundles pulled from adjacent nozzles do not interfere with each other, allowing the sizing agent to be uniformly coated on the surface of each fiberglass bundle. This effectively improves the sizing agent coating rate, thereby enhancing the bonding performance between fiberglass and resin and improving the mechanical properties of subsequent fiberglass products.

[0016] The staggered arrangement of the triangular matrix creates irregular gaps between the glass fiber bundles. Compared to the regular gaps in the square matrix arrangement, this gap structure increases the contact area between the bundles and the air, promotes air circulation, and accelerates the evaporation of moisture in the sizing agent. This significantly reduces the water content of the glass fiber after drawing, reduces energy consumption and time in subsequent drying processes, lowers production costs, and improves the storage stability of the glass fiber, preventing problems such as moisture absorption and clumping.

[0017] By optimizing the matching of the side length of the isometric triangle in the arrangement unit with the nozzle orifice diameter, and by reasonably setting the staggered distance between adjacent arrangement units, the uniformity of nozzle distribution is further improved, taking into account both the wire bundle spacing and the coating coverage, and ensuring the stability of the wetting agent coating effect. The setting of the guide slope at the nozzle outlet end can guide the glass melt to flow out smoothly, reduce wire drawing fluctuations, facilitate the full contact between the wetting agent and the wire bundle, and further improve the coating rate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an enlarged view of part A of the present invention; In the figure, 1-strainer body, 2-strainer nozzle, 3-guide slope, 4-upper base plate, 5-lower base plate, 6-high temperature resistant non-stick coating, 7-guide plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the invention and are not intended to limit the invention.

[0020] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0021] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0022] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0023] See Figure 1 and Figure 2 This invention provides a matrix-type double-bottom plate spinneret for fiberglass, which includes: drain plate body 1; The nozzle 2 is provided on the main body of the glass plate for the glass liquid to flow out and be drawn into a wire. Multiple nozzles 2 are arranged in a staggered triangular matrix. The triangular matrix is ​​composed of multiple arrangement units, with adjacent arrangement units staggered and the center distance between corresponding nozzles 2 in adjacent arrangement units is equal.

[0024] The sprue body 1 is made of a high-temperature and corrosion-resistant alloy material to ensure long-term stable operation in the high-temperature molten glass environment, reducing the frequency of sprue damage and replacement due to material issues. The orifice size of the nozzle 2 is precisely calculated and designed to accurately control the flow rate of molten glass according to different viscosities and drawing process requirements, ensuring the uniformity and stability of drawing. In addition, the sprue body 1 is equipped with a heating device to locally heat the sprue, preventing the molten glass from solidifying at the nozzle 2 due to temperature drop, thus ensuring continuous production.

[0025] In some embodiments of the present invention, a matrix-type double-bottom plate spinneret for glass fiber is used, wherein the arrangement unit is an equilateral triangle structure, with the nozzle 2 located at the vertex of the triangle. The side length of each arrangement unit is optimized to ensure that the spacing between the nozzles 2 meets the requirement of uniform flow of molten glass while maximizing the space utilization of the spinneret. This equilateral triangle structure arrangement unit makes the nozzles 2 distributed more regularly and orderly on the entire spinneret, which is conducive to the formation of a stable and uniform flow layer of molten glass on the surface of the spinneret, further improving the quality and efficiency of fiber drawing. Moreover, in the manufacturing process, the equilateral triangle structure arrangement unit is easy to process and install, which can reduce production costs and improve production efficiency.

[0026] In some embodiments of the present invention, the ratio of the side length of the equilateral triangle to the orifice diameter of the nozzle 2 is 3:1 to 8:1. By setting the ratio of the side length of the equilateral triangle to the orifice diameter of the nozzle 2 within the range of 3:1 to 8:1, sufficient flow space for the molten glass on the surface of the baffle plate can be ensured, avoiding problems such as poor flow, local accumulation, or flow interruption caused by excessively small spacing between the nozzles 2. Simultaneously, the overall structure of the baffle plate is compact, making full use of space and increasing the number of nozzles 2 per unit area, thereby improving the production efficiency of glass fibers. Furthermore, this ratio allows for flexible adjustment of the side length of the equilateral triangle and the orifice diameter of the nozzle 2 according to different production needs and molten glass characteristics to achieve the best fiber drawing effect.

[0027] In some embodiments of the present invention, the outlet end of the nozzle 2 is provided with a guide slope 3 to guide the molten glass to flow out smoothly. The design of the guide slope 3 is carefully calculated, and its inclination angle and length can be optimized according to the viscosity and flow rate of the molten glass to ensure that the molten glass maintains a stable laminar flow state during the outflow process, reducing turbulence and splashing. This design not only improves the quality of the glass fiber but also reduces waste and cleaning work in the production process, further improving production efficiency and economic benefits.

[0028] In some embodiments of the present invention, the staggered distance between adjacent arrangement units is 0.3 to 0.7 times the side length of a single arrangement unit. This staggered distance has been verified through extensive experiments and enables a more uniform distribution of molten glass on the stencil. When the molten glass flows out of the nozzle 2, due to this staggered distance between adjacent arrangement units, the molten glass does not concentrate in a certain area but can more widely cover the space below the stencil, resulting in more uniform glass fiber thickness and effectively improving the quality stability of the glass fiber product. Simultaneously, a reasonable staggered distance also helps optimize the flow path of the molten glass, reduce flow resistance, and minimize molten glass residue on the stencil, further improving the utilization rate and production efficiency of the molten glass.

[0029] In some embodiments of the present invention, the inlet end of the nozzle 2 is provided with a tapered guide cavity, the cross-sectional shape of which is conical or parabolic, to reduce the flow resistance of the molten glass and stabilize the flow velocity. The tapered guide cavity design allows the molten glass to gradually accelerate as it enters the nozzle 2, while avoiding eddies and energy loss caused by abrupt changes in cross-section. The conical or parabolic cross-sectional shape guides the molten glass through a smooth transition, ensuring a more stable flow at the inlet of the nozzle 2, thereby improving the continuity and stability of glass fiber drawing. Furthermore, this design effectively reduces molten glass residue and blockage at the inlet of the nozzle 2, extending the service life of the nozzle 2 and reducing maintenance costs during production.

[0030] In some embodiments of the present invention, the stencil body 1 includes an upper base plate 4 and a lower base plate 5. The upper base plate 4 is provided with a preheating channel, which communicates with the inlet of the nozzle 2 and is used to preheat the molten glass about to flow out. The design of the preheating channel effectively utilizes the residual heat of the molten glass within the stencil to preheat the molten glass about to enter the nozzle 2. This not only reduces temperature fluctuations at the inlet of the nozzle 2, improving the fluidity and uniformity of the molten glass, but also further reduces the risk of stress concentration and breakage due to temperature differences. Through preheating, the molten glass can form glass fibers more stably during the drawing process, improving the quality of the glass fibers and production efficiency. Simultaneously, the preheating channel increases the residence time of the molten glass within the stencil, facilitating further homogenization and refinement of the molten glass, thereby improving the performance of the final product.

[0031] In some embodiments of the present invention, the surface of the sprue body 1 is coated with a high-temperature resistant anti-stick coating 6, the coating material being a silicon nitride or silicon carbide composite material. This high-temperature resistant anti-stick coating 6 effectively prevents the adhesion of molten glass to the surface of the sprue body 1, reducing the amount of molten glass residue on the sprue. This not only facilitates the cleaning and maintenance of the sprue but also avoids localized overheating caused by molten glass residue, further extending the service life of the sprue. Simultaneously, the coating exhibits good high-temperature stability, is not prone to peeling or deterioration under high-temperature environments, ensuring the performance stability of the sprue during long-term use.

[0032] In some embodiments of the present invention, an airflow guiding device is also included, disposed below the stencil. This airflow guiding device comprises multiple inclined guide plates 7, used to form a directional airflow between the glass fiber bundles, accelerating the evaporation of moisture in the sizing agent. The inclination angle of the guide plates 7 is carefully designed to adjust the airflow speed and direction according to actual production needs, ensuring uniform and rapid evaporation of moisture in the sizing agent, thereby improving the quality of the glass fiber product. Furthermore, the airflow guiding device has a simple structure, is easy to install and maintain, and does not significantly affect the overall structure of the stencil, ensuring the continuity and stability of the production process. This device can also effectively reduce dust and harmful gases in the workshop, improve the working environment, and meet the environmental protection and safety requirements of modern industrial production.

[0033] In summary, the beneficial effects of the present invention are as follows: This invention employs a triangular matrix staggered nozzle structure, which, compared to the traditional square matrix arrangement, results in a more uniform nozzle distribution. The fiberglass bundles pulled from adjacent nozzles do not interfere with each other, allowing the sizing agent to be uniformly coated on the surface of each fiberglass bundle. This effectively improves the sizing agent coating rate, thereby enhancing the bonding performance between fiberglass and resin and improving the mechanical properties of subsequent fiberglass products.

[0034] The staggered arrangement of the triangular matrix creates irregular gaps between the glass fiber bundles. Compared to the regular gaps in the square matrix arrangement, this gap structure increases the contact area between the bundles and the air, promotes air circulation, and accelerates the evaporation of moisture in the sizing agent. This significantly reduces the water content of the glass fiber after drawing, reduces energy consumption and time in subsequent drying processes, lowers production costs, and improves the storage stability of the glass fiber, preventing problems such as moisture absorption and clumping.

[0035] By optimizing the matching of the side length of the isometric triangle in the arrangement unit with the nozzle orifice diameter, and by reasonably setting the staggered distance between adjacent arrangement units, the uniformity of nozzle distribution is further improved, taking into account both the wire bundle spacing and the coating coverage, and ensuring the stability of the wetting agent coating effect. The setting of the guide slope at the nozzle outlet end can guide the glass melt to flow out smoothly, reduce wire drawing fluctuations, facilitate the full contact between the wetting agent and the wire bundle, and further improve the coating rate.

[0036] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A matrix-type double-bottom plate spinneret for fiberglass, characterized in that, include: drain plate body; The leak nozzles are formed on the main body of the leak plate for the glass melt to flow out and be drawn into wires. Multiple leak nozzles are arranged in a staggered triangular matrix. The triangular matrix is ​​composed of multiple arrangement units, with adjacent arrangement units staggered and the center-to-center distance between corresponding leak nozzles in adjacent arrangement units being equal.

2. The fiberglass matrix-type double-bottom plate spinneret according to claim 1, characterized in that, The arrangement unit is an equilateral triangle structure, with the spout located at the vertex of the triangle.

3. The fiberglass matrix-type double-bottom plate spinneret according to claim 2, characterized in that, The ratio of the side length of the equilateral triangle to the diameter of the leak nozzle is 3:1 to 8:

1.

4. The fiberglass matrix-type double-bottom plate spinneret according to claim 1, characterized in that, The outlet end of the leak nozzle is provided with a guide slope to guide the molten glass to flow out smoothly.

5. The fiberglass matrix-type double-bottom plate spinneret according to claim 1, characterized in that, The misalignment distance between adjacent arrangement units is 0.3 to 0.7 times the side length of a single arrangement unit.

6. The fiberglass matrix-type double-bottom plate spinneret according to claim 1, characterized in that, The inlet end of the leak is provided with a tapered guide cavity, the cross-sectional shape of which is conical or parabolic, to reduce the flow resistance of the molten glass and stabilize the flow rate.

7. The fiberglass matrix-type double-bottom plate spinneret according to claim 1, characterized in that, The sprue body includes an upper base plate and a lower base plate. The upper base plate is provided with a preheating channel, which is connected to the sprue inlet and is used to preheat the molten glass that is about to flow out.

8. The matrix-type double-bottom plate spinneret for fiberglass according to claim 1, characterized in that, The surface of the sluice plate body is coated with a high-temperature resistant and non-stick coating, and the coating material is a silicon nitride or silicon carbide composite material.

9. The matrix-type double-bottom plate spinneret for fiberglass according to claim 1, characterized in that, It also includes an airflow guiding device disposed below the sprue, the airflow guiding device comprising multiple inclined guide plates for forming directional airflow between the glass fiber bundles to accelerate the evaporation of moisture in the impregnating agent.

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