Glass fiber elastic felt production line and production process thereof

Abstract

The application discloses a glass fiber elastic felt production line and a production process thereof, and comprises an unpacking machine, an opener, a large bin, a secondary opener, a vibrating cotton box, a belt scale, a powder scattering mechanism and an air-laid box. The powder scattering mechanism comprises a front and rear section distribution structure, a flow guide and material flushing structure and a plurality of equal division pipes. The front and rear section distribution structure comprises a powder scattering cylinder, a transmission cavity and an equal division cylinder. The flow guide and material flushing structure comprises an arc-shaped material guide hopper arranged on the outer side of the equal division pipe, two powder guide cavities arranged at the two ends of the inner side of the arc-shaped material guide hopper, a wind guide pipe arranged at the middle part of the arc-shaped material guide hopper, and a dispersion piece arranged at the bottom end of the arc-shaped material guide hopper and connected to the end position of the wind guide pipe. The wind introduced into the wind guide pipe is sucked out of the powder guide cavities through the Venturi effect and is scattered and flushed into the glass fiber through the dispersion piece. The application can uniformly disperse the binder particles to each area of the glass fiber felt.

Description

Technical Field

[0001] This invention relates to a glass fiber processing equipment, and more particularly to a glass fiber elastic mat production line and its production process. Background Technology

[0002] With the development and demands of modern society, the application of natural gas is becoming increasingly widespread. At room temperature, the volume of LNG (liquefied natural gas) is only 1 / 625 of its gaseous state. It is stored in cryogenic LNG storage tanks in liquefied form at temperatures around -162℃. Elastic felt has significant advantages in LNG storage applications, not only ensuring the structural integrity and safety of the storage tank but also improving its thermal insulation and fire resistance, adapting to extreme working environments. To enhance the thermal insulation effect of elastic felt, binders are added during the preparation of glass fiber wool to improve its heat insulation performance.

[0003] Traditional adhesive application methods involve using a brush to apply the adhesive onto a guide plate before it is spread onto the glass fiber. While this method effectively adds adhesive to the glass fiber and improves its thermal insulation strength, the application is not uniform, leading to uneven insulation areas during the molding process. Current technology places the entire applicator on a laterally moving structure to improve the uniformity of application. However, this method still suffers from uneven application because the moving applicator cannot adapt to the moving glass fiber. Furthermore, the moving applicator is difficult to control in terms of direction, making it impossible to achieve precise application.

[0004] Therefore, this case aims to provide a glass fiber elastic mat production line and its production process, which can uniformly disperse the binder particles into various areas of the glass fiber mat, and ensure that the particles enter the interior of the glass fiber mat during the spreading process and do not overflow during this process, and can ensure a uniform felt structure even in the later web forming stage. Summary of the Invention

[0005] This invention provides a glass fiber elastic mat production line and its production process, which can effectively solve the above-mentioned problems.

[0006] This invention is implemented as follows:

[0007] A fiberglass elastic mat production line includes a bale opener for receiving cotton, the discharge end of which is connected to an opening machine. The opening machine is connected to a large silo via a pipe, and the large silo is connected to a secondary opening machine via a conveyor belt. The secondary opening machine is connected to a vibrating cotton box via a pipe. The cotton in the vibrating cotton box is conveyed to a belt scale. A powder-spreading mechanism is installed above the belt scale. The fiberglass, after being weighed by the belt scale, is conveyed to an air-forming mesh box. The powder-spreading mechanism includes:

[0008] The front and rear material distribution structure includes a mounting frame at the upper end of the belt scale. The front and rear material distribution structure includes a powder spreading cylinder mounted on the mounting frame. The powder spreading cylinder is divided into several chambers. All chambers of the powder spreading cylinder are connected to a transmission chamber. The transmission chamber is connected to a dividing cylinder. Several equalizing pipes are provided at both ends of the equalizing cylinder. The chambers on the powder spreading cylinder input the particles into the transmission chamber, and then distribute them evenly into each equalizing pipe on the equalizing cylinder, so that all the equalizing pipes evenly spread the particles on the glass fiber.

[0009] The guiding and flushing structure includes an arc-shaped guiding hopper disposed on the outside of the equalizing pipe. Two powder guiding cavities are disposed at both ends of the inner side of the arc-shaped guiding hopper. An air guide pipe is disposed in the middle of the arc-shaped guiding hopper. A dispersing element disposed at the bottom of the arc-shaped guiding hopper is connected to the end of the air guide pipe. The air entering through the air guide pipe draws out the powder in the powder guiding cavity through the Venturi effect and disperses it into the glass fiber through the dispersing element.

[0010] As a further improvement, the equal-dividing cylinder has a cylindrical structure, the equal-dividing cylinder includes a solid base, a material-dividing shovel is integrally formed on the top of the solid base, a material-dividing cavity is connected to the outside of the solid base, and the material-dividing shovel divides the material-dividing cavity into front and rear chambers.

[0011] As a further improvement, the distribution pipe includes a storage chamber connected to a solid base, a metering element is provided at the front end of the storage chamber, and a distribution chamber pipe is connected to the rear end of the storage chamber.

[0012] As a further improvement, the metering element includes a rotating shaft that is movably inserted into the storage cavity. A flip plate is connected to the outside of the rotating shaft. The flip plate is driven by a rotating motor located outside the storage cavity. A time relay is provided on the rotating motor.

[0013] As a further improvement, the fabric cavity tube has a V-shaped structure, the top of the V-shaped structure is connected to the material storage cavity, and the two openings of the material storage cavity are connected to the powder guiding cavity.

[0014] As a further improvement, the arc-shaped guide hopper includes an outer extension plate connected to the outer edge of the top of the dispensing chamber, and an arc-shaped surface is connected below the outer extension plate. The two ends of the arc-shaped surface are connected to the dispensing chamber through two sealing plates.

[0015] As a further improvement, a Venturi structure is provided within the arc-shaped surface. The Venturi structure includes a flow section connected to the air duct and a constriction section. The constriction section is connected to the powder guiding cavity. When the incoming air passes through the flow section and enters the constriction section, it will draw in some of the powder in the powder guiding cavity and spray it directly into the interior of the glass fiber.

[0016] As a further improvement, the dispersing component includes an elongated frame connected to the powder guiding cavity and the lower end of the arc-shaped guide hopper. A middle inclined plate is provided in the middle of the inner side of the elongated frame, and lateral inclined plates connected to the elongated frame are respectively provided on both sides of the middle inclined plate.

[0017] This invention also discloses a glass fiber elastic mat production process, which, using the aforementioned glass fiber elastic mat production line, includes the following steps:

[0018] S1: Pour the purchased glass fiber into the unpacking machine to unpack it, and then pass the unpacked glass fiber into the loosening machine to loosen it. Store the loosened glass fiber in the warehouse.

[0019] S2: Gradually feed the glass fiber stored in the large warehouse into the secondary opening machine. After secondary opening, the glass fiber is fed into the vibrating cotton box for storage through the air duct.

[0020] S3: The conveyor belt in the vibrating cotton box gradually feeds the fiberglass to the belt scale. As the fiberglass moves on the belt scale, it is sprinkled with powder by the powder-spreading mechanism.

[0021] S4: The belt scale adjusts the conveying speed according to the amount of material fed into the vibrating cotton box. The powdered glass fiber is fed into the air-forming mesh box, forming a thick felt at the bottom of the air-forming mesh box.

[0022] S5: The thick felt formed in one step by airflow is transported to the baking area. The thick felt is clamped according to the required thickness. Hot air at 170℃-250℃ is circulated and guided up and down in the chamber by a high-pressure circulating fan. It is cured evenly for 3 to 30 minutes. The cured product is cut into products by the cutting mechanism according to the requirements. The cut products are rolled up and packaged.

[0023] As a further improvement, the powder-spreading mechanism disperses a portion of the powder onto the surface of the glass fiber through an arc-shaped guide hopper during powder spreading, and flushes a portion of the powder into the interior of the glass fiber through an air duct.

[0024] The beneficial effects of this invention are:

[0025] In existing adhesive feeding structures, a brush is often used to scrape the adhesive downwards to achieve uniform dispersion. However, since most adhesives are in powder form, scraping with a brush can easily cause the powder to splatter, resulting in powder loss and uneven distribution. Therefore, this invention uses a front and rear distribution structure to divide the powder spreading process into two stages. After the powder enters the powder spreading cylinder and the transmission chamber, it is stored in the front and rear equal distribution tubes. After the equal distribution tubes are full of powder, the powder is first spread through the front equal distribution tube. After the glass fiber has been spread with powder for the first time, it moves to the rear equal distribution tube after being moved by the belt scale. The powder is then spread again through the rear equal distribution tube. The two powder spreading positions are staggered to ensure uniformity of powder spreading.

[0026] When the powder enters the equalizing cylinder, it needs to be discharged in both directions, so the powder also needs to be evenly divided into two parts. Therefore, the equalizing cylinder of the present invention is equipped with a distributing shovel. The distributing shovel divides the powder falling in the middle into two parts, so that the equalizing pipes at both ends can store enough powder, allowing for multiple discharges and avoiding the phenomenon of concentration in a certain area.

[0027] During the feeding process of the equalization tube, the belt scale needs to measure at all times, so the feeding amount of the equalization tube in each area is fixed. Therefore, the present invention is equipped with a metering element on each equalization tube. The design of the metering element allows each equalization tube to output a fixed amount of powder, thereby fixing the amount of powder in each area and promoting the uniform distribution of adhesive in each area.

[0028] After being metered, the powder needs to be fed into the guiding and flushing structure. In order to directly cooperate with the two powder guiding cavities, the present invention sets the material distribution cavity tube into a V-shaped structure. By splitting in the middle, the metered powder is discharged into the guiding and flushing structure, thereby ensuring that the powder can cooperate with the glass fiber in segments, so that the powder is more evenly distributed in the glass fiber.

[0029] Although the powder discharged from the distribution pipes at both ends allows for secondary powder spreading and more even coverage, it still easily causes powder to splatter and drift in the air. Furthermore, the powder after spreading only floats on the surface of the glass limiter and is easily separated during the later web forming process, floating inside the airflow web forming box. This results in poor thermal insulation performance of the formed elastic felt. Therefore, this invention adds a guiding and flushing structure to the front and rear material distribution structure. The powder from the distribution pipes enters the powder guiding cavity at both ends for natural distribution. At the same time, the air guide pipes introduce air, which enters the arc-shaped guide hopper to generate a Venturi effect, drawing in some of the powder from the powder guiding cavity. This allows some powder to penetrate deep into the glass fiber, resulting in a more even distribution of the adhesive in the glass fiber and thus improving production quality.

[0030] Since the entire material guiding and flushing structure requires ventilation and the application of powdered materials, the space within the entire material guiding and flushing structure needs to be enclosed. Therefore, this invention first sets the arc-shaped material guide hopper as an arc-shaped surface to facilitate material discharge, and then encloses the outer side and top of the arc-shaped surface by using an outer expansion plate and a sealing plate to enclose the entire arc-shaped material guide hopper, so that the material is discharged only from the bottom area, thereby forming a uniform falling surface and preventing overflow from the side direction.

[0031] As the powder slides down from the arc-shaped guide hopper, it slides down in two stages: one is the slide within the powder guiding cavity itself, and the other is the accelerated slide within the Venturi structure of the arc-shaped surface. When the air duct enters the Venturi structure, due to the change in duct diameter and its connection with the powder guiding cavity, it can draw in some of the powder from the powder guiding cavity, thereby inputting a portion of the powder into the interior of the glass fiber in a high-kinetic-energy manner. This allows for the distribution of adhesive both inside and outside the glass fiber. Even when fed into the air-forming mesh box, the relatively uniform distribution of adhesive further facilitates the formation of a thick felt.

[0032] Whether the powder is powered or not, it is ultimately output from the bottom of the arc-shaped guide hopper. To ensure uniformity, the dispersing components at the bottom of the arc-shaped guide hopper are divided into a middle inclined plate and a side inclined plate. The middle inclined plate corresponds to the position of the Venturi structure, allowing the accelerated powder to pass through unimpeded. The side inclined plate corresponds to the powder falling naturally in the powder guiding cavity, allowing the naturally falling powder to be distributed more evenly under the guidance, forming a uniform adhesive distribution surface. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of a glass fiber elastic felt production line according to the present invention.

[0035] Figure 2 This is a three-dimensional structural diagram of the powder-spreading mechanism of the present invention.

[0036] Figure 3 This is a front view structural schematic diagram of the powder-spreading mechanism of the present invention.

[0037] Figure 4 This is a schematic diagram of the internal structure of the equal-dividing cylinder of the present invention.

[0038] Figure 5 This is a schematic diagram of the structure of the evenly distributed pipe of the present invention.

[0039] Figure 6 This is a schematic diagram of the flow guiding and flushing structure of the present invention.

[0040] Figure 7 This is a schematic diagram of the glass fiber landing point at different striking frequencies in this invention.

[0041] Figure 8 This is a diagram showing the fiberglass placement points in existing thin-mesh forming technology.

[0042] Figure 9 This is a diagram showing the drop points of the glass fibers during the thick felt forming process of this invention.

[0043] In the picture:

[0044] 10. Packaging opener; 20. Loosening machine; 30. Large storage bin; 40. Secondary loosening machine; 50. Vibrating cotton box; 60. Belt scale; 61. Mounting frame; 70. Powder spreading mechanism; 71. Front and rear material distribution structure; 71. Powder spreading cylinder; 711. Transmission chamber; 712. Dividing cylinder; 713. Solid base; 7131. Material spreading shovel; 7132. Material distribution chamber; 7133. Even distribution pipe; 714. Storage chamber; 7141. Quantifying component; 7142. Rotating shaft; 71421. Tilting plate; 71422. Rotation. Motor 71423, fabric cavity tube 7143, arc-shaped guide hopper 721, outer expansion plate 7211, arc-shaped surface 7212, sealing plate 7213, venturi structure 7214, flow section 72141, flow contraction section 72142, powder guiding cavity 722, air guide tube 723, dispersing component 724, long frame 7241, middle section inclined plate 7242, lateral inclined plate 7243, airflow forming mesh box 80, baking zone 90, cutting mechanism 100. Detailed Implementation

[0045] All embodiments of the present invention are intended to fall within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0046] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating that the purpose, technical solution, and advantages of the method are clearer. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort indicate or imply the relative importance of the indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] Reference Figures 1-6 As shown, a fiberglass elastic mat production line includes a bale opener 10 for receiving cotton. The discharge end of the bale opener 10 is connected to an opening machine 20. The opening machine 20 is connected to a large bin 30 via a pipe. The large bin 30 is connected to a secondary opening machine 40 via a conveyor belt. The secondary opening machine 40 is connected to a vibrating cotton box 50 via a pipe. The cotton in the vibrating cotton box 50 is conveyed to a belt scale 60. A powder-spreading mechanism 70 is installed above the belt scale 60. The fiberglass after being weighed by the belt scale 60 is conveyed to an air-forming mesh box 80. The powder-spreading mechanism 70 includes a front and rear section material distribution structure 71. A mounting frame 61 is installed at the upper end of the belt scale 60. The front and rear section material distribution structure 71 includes a powder-spreading cylinder 711 installed on the mounting frame 61. The powder-spreading cylinder 711 is divided into several chambers. All chambers of the powder-spreading cylinder 711 are connected to a transmission chamber 712. Above, the transmission chamber 712 is connected to a dividing cylinder 713. Both ends of the dividing cylinder 713 are provided with several equalizing pipes 714. The chamber on the powder-spreading cylinder 711 inputs particles into the transmission chamber 712, and then distributes them evenly into each equalizing pipe 714 on the dividing cylinder 713, so that all the equalizing pipes 714 evenly spread the particles onto the glass fiber. A flow-guiding and material-flushing structure includes components disposed on the equalizing pipes 714. An outer arc-shaped guide hopper 721 has two powder guiding chambers 722 at both ends of its inner side. An air guide pipe 723 is provided in the middle of the arc-shaped guide hopper 721. A dispersing element 724 is connected to the end of the air guide pipe 723 at the bottom of the arc-shaped guide hopper 721. The air entering through the air guide pipe 723 draws out the powder from the powder guiding chambers 722 through the Venturi effect and disperses it into the glass fiber through the dispersing element 724.

[0048] The glass fiber used in this embodiment is not a single type, but a mixture of two specifications of glass fiber. Both different specifications of glass fiber are added into the unpacking machine 10, and after multiple processing steps, elastic felt is obtained.

[0049] The adhesive and powder mentioned in this embodiment are both phenolic resins, which are commonly used adhesives. In this case, they are in powder form and will completely dissolve in the glass fiber during the heating stage after the thick felt is formed.

[0050] The packaging machine 10, opening machine 20, large warehouse 30, secondary opening machine 40, vibrating cotton box 50, belt scale 60, airflow forming box 80, baking zone 90, and cutting mechanism 100 mentioned in this embodiment are all existing technologies, so they will not be elaborated in detail, and detailed enlarged views are not included in the figure.

[0051] In existing adhesive feeding structures, a brush is often used to scrape the adhesive downwards to achieve uniform dispersion. However, since most adhesives are in powder form, scraping with a brush can easily cause the powder to splatter, resulting in powder loss and uneven distribution. Therefore, this invention uses a front and rear distribution structure 71 to divide the entire powder spreading process into two stages. After the powder enters the powder spreading cylinder 711 and the transmission chamber 712, it is stored in the front and rear equal distribution pipes 714. After the equal distribution pipes 714 are full of powder, the powder is first spread through the front equal distribution pipe 714. After the glass fiber is spread by the belt scale 60, it reaches the rear equal distribution pipe 714 and is spread again through the rear equal distribution pipe 714. The two powder spreading positions are staggered to ensure the uniformity of powder spreading.

[0052] When the powder enters the equalizing cylinder 713, it needs to be discharged in both directions, so the powder also needs to be evenly divided into two parts. Therefore, the equalizing cylinder 713 in this embodiment is a cylindrical structure. The equalizing cylinder 713 includes a solid base 7131. A distributing shovel 7132 is integrally formed on the top of the solid base 7131. A distributing chamber 7133 is connected to the outside of the solid base 7131. The distributing shovel 7132 divides the distributing chamber 7133 into two chambers. The distributing shovel 7132 is provided on the equalizing cylinder 713. The distributing shovel 7132 divides the powder falling in the middle into two parts, so that the equalizing pipes 714 at both ends can store enough powder, allowing for multiple discharges and avoiding the phenomenon of concentration in a certain area.

[0053] During the feeding process of the equalization tube 714, since the belt scale 60 needs to measure at all times, the feeding amount of the equalization tube 714 in each area is fixed. Therefore, the equalization tube 714 in this embodiment includes a storage cavity 7141 connected to a solid base 7131. A metering element 7142 is provided at the front end of the storage cavity 7141, and a distribution cavity tube 7143 is connected to the rear end of the storage cavity 7141. A metering element 7142 is provided on each equalization tube 714. The design of the metering element 7142 allows each equalization tube 714 to output a fixed amount of powder, thereby fixing the amount of powder in each area and promoting the uniform distribution of adhesive in each area.

[0054] The metering element 7142 determines the amount of powder to be dispensed based on the time it takes for the powder to pass through. Specifically, the metering element 7142 includes a rotating shaft 71421 that is movably inserted into the storage chamber 7141. A flip plate 71422 is connected to the outside of the rotating shaft 71421. The flip plate 71422 is driven by a rotating motor 71423 located outside the storage chamber 7141. The rotating motor 71423 is equipped with a time relay. After each rotation of the rotating motor 71423, the time relay starts timing, thereby releasing a fixed amount of powder within one cycle, thus achieving relatively precise material control.

[0055] After being metered, the powder needs to be fed into the guiding and flushing structure. In order to directly cooperate with the two powder guiding cavities 722, the material distribution tube 7143 in this embodiment is a V-shaped structure. The top of the V-shaped structure is connected to the storage cavity 7141, and the two openings of the storage cavity 7141 are connected to the powder guiding cavity 722. By setting the material distribution tube 7143 into a V-shaped structure and branching in the middle, the metered powder is discharged into the guiding and flushing structure, thereby ensuring that the powder can cooperate with the glass fiber in segments and make the powder more evenly distributed in the glass fiber.

[0056] Although the powder discharged from the equal distribution pipes 714 at both ends allows for secondary powder spreading and more even coverage, it still easily causes the powder to splatter and drift around in the air. Furthermore, the powder after spreading can only float on the surface of the glass limiter, making it extremely easy to separate and float inside the airflow forming box 80 during the later web forming process. This results in poor thermal insulation performance of the formed elastic felt. Therefore, this invention adds a flow guiding and flushing structure to the front and rear material distribution structure 71. The powder from the equal distribution pipes 714 will enter the powder guiding cavity 722 at both ends for natural distribution. At the same time, the air guide pipe 723 will introduce air, which will enter the arc-shaped guide hopper 721 to generate a Venturi effect, drawing in some of the powder in the powder guiding cavity 722. This allows some of the powder to penetrate deep into the glass fiber, resulting in a more even distribution of the adhesive in the glass fiber and thus improving production quality.

[0057] Since the entire material guiding and flushing structure requires ventilation and the application of powdered materials, the space within the entire material guiding and flushing structure needs to be enclosed. Therefore, the arc-shaped material guiding hopper 721 in this embodiment includes an outer extension plate 7211 connected to the outer edge of the top of the distributing chamber 7133. An arc-shaped surface 7212 is connected below the outer extension plate 7211. The two ends of the arc-shaped surface 7212 are connected to the distributing chamber 7133 through two sealing plates 7213. First, the arc-shaped material guiding hopper 721 is set as an arc-shaped surface 7212 to facilitate the discharge of materials. The outer side and top of the arc-shaped surface 7212 are sealed by the outer extension plate 7211 and the sealing plate 7213, thereby enclosing the entire arc-shaped material guiding hopper 721 so that the material is discharged only from the bottom area, thus forming a uniform falling surface and preventing overflow from the side.

[0058] As the powder slides down from the arc-shaped guide hopper 721, a Venturi structure 7214 is provided within the arc-shaped surface 7212. The Venturi structure 7214 includes a flow section 72141 connected to the air guide duct 723 and a constriction section 72142. The constriction section 72142 communicates with the powder guiding cavity 722. When the incoming air passes through the flow section 72141 and enters the constriction section 72142, it draws in some of the powder from the powder guiding cavity 722 and directly sprays it into the interior of the glass fiber. The powder slides down in two stages: one stage is the sliding down of the powder guiding cavity 722 itself, and the other stage is the sliding down of the powder guiding cavity 722 itself. The other segment involves accelerated descent within the Venturi structure 7214 of the curved surface 7212. The air duct 723 enters the Venturi structure 7214. Due to the change in duct diameter and its connection to the powder guiding cavity 722, some powder within the powder guiding cavity 722 is drawn in. This allows a portion of the powder to be input into the interior of the glass fiber in a high-kinetic-energy manner, resulting in adhesive distribution both inside and outside the glass fiber. Even in the feeding airflow forming box 80, the relatively uniform distribution of the adhesive further facilitates the formation of a thick felt.

[0059] Whether the powder is powered or not, it is ultimately output from the bottom of the arc-shaped guide hopper 721. To ensure uniformity, the dispersing component 724 includes a long frame 7241 connected to the powder guiding cavity 722 and the lower end of the arc-shaped guide hopper 721. A middle section inclined plate 7242 is provided in the middle of the inner side of the long frame 7241. Lateral inclined plates 7243 connected to the long frame 7241 are respectively provided on both sides of the middle section inclined plate 7242. The dispersing component 724 at the bottom of the arc-shaped guide hopper 721 is divided into the middle section inclined plate 7242 and the lateral inclined plates 7243. The middle section inclined plate 7242 corresponds to the position of the Venturi structure 7214, so that the accelerated powder can pass out unimpeded. The lateral inclined plates 7243 correspond to the powder falling naturally in the powder guiding cavity 722, so that the powder falling naturally is distributed more evenly under guidance, forming a uniform adhesive distribution surface.

[0060] Another embodiment of the present invention discloses a glass fiber elastic mat production process, which utilizes the above-mentioned glass fiber elastic mat production line and includes the following steps:

[0061] S1: Pour the purchased glass fiber into the unpacking machine 10 for unpacking, and then pass the unpacked glass fiber into the loosening machine 20 for loosening. Store the loosened glass fiber in the large warehouse 30.

[0062] S2: Gradually feed the glass fiber stored in the large warehouse 30 into the secondary opening machine 40. After secondary opening, the glass fiber is fed into the vibrating cotton box 50 through the air duct for storage.

[0063] S3: The conveyor belt in the vibrating cotton box 50 gradually feeds the material to the belt scale 60. When the glass fiber moves on the belt scale 60, it is sprinkled with powder by the powdering mechanism 70.

[0064] S4: The belt scale 60 adjusts the conveying speed according to the amount of material fed into the vibrating cotton box 50. The powdered glass fiber is fed into the air-forming mesh box 80, forming a thick felt at the bottom of the air-forming mesh box 80.

[0065] S5: The thick felt formed in one step by the airflow forming box 80 is transported to the baking zone 90. The thick felt is clamped according to the required thickness. Hot air at 170℃-250℃ is circulated and guided up and down in the chamber by a high-pressure circulating fan. It is cured evenly for 3 to 30 minutes. According to the requirements, the cured product is cut into products by the cutting mechanism 100. The cut products are rolled up and packaged.

[0066] Furthermore, during powder application, the powder application mechanism 70 disperses a portion of the powder onto the surface of the glass fiber via the arc-shaped guide hopper 721, and flushes a portion of the powder into the interior of the glass fiber via the air duct 723.

[0067] The position of the core material falling onto the web structure varies depending on the beater frequency. In this embodiment, the beater frequency in the airflow web forming box 80 is 20-40Hz to ensure that the core material falls nearly perpendicular to the web structure while maintaining a certain angle with the output curtain direction, thereby increasing the interweaving properties after web formation. When making thin felt, the beater frequency is 40-70Hz. For specific landing point effects, please refer to [the documentation / reference needed]. Figure 7 .

[0068] Currently, the web-forming structure in the manufacturing of thin webs is relatively advanced, such as... Figure 8As shown, the suction position at the bottom of the airflow forming box 80 is located at the front end. This is to ensure that when the output curtain is at high speed, the direction in which the core material falls onto the forming structure is tangential to the direction of movement of the output curtain. Through the anisotropic output of the glass fibers, they interweave on the forming structure to form a thinner mesh. In this embodiment, the product is an elastic felt, and its most important performance characteristic is its resilience. Therefore, as... Figure 9 As shown, the air intake position at the bottom of the airflow forming mesh box 80 is located in the middle, so that the glass fiber is almost perpendicular to the output curtain. The orientation of the glass fiber directly determines the elasticity of the thick felt, thereby increasing the elasticity of the thick felt in the height direction.

[0069] The change in the output curtain speed is the key to determining whether the airflow forming machine can form thick felt in one step. When the feed rate is set to a certain value, according to the formula weight = feed rate * 1000 / output curtain speed * 60 * 1.65, it can be seen that the thickness (weight) of the formed web can be controlled by adjusting the output curtain speed. When making thin webs, the output curtain speed is 10 to 50 m / min. In this embodiment, the output curtain speed at the lower end of the airflow forming box 80 is 0.8 to 2 m / min. The actual working speed can be adjusted by the feed rate and the required weight.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A fiberglass elastic mat production line, comprising a bale opener (10) for receiving cotton, the discharge end of the bale opener (10) being connected to a loosening machine (20), the loosening machine (20) being connected to a large silo (30) via a pipe, the large silo (30) being connected to a secondary loosening machine (40) via a conveyor belt, the secondary loosening machine (40) being connected to a vibrating cotton box (50) via a pipe, the cotton in the vibrating cotton box (50) being conveyed to a belt scale (60), a powder-spreading mechanism (70) being provided above the belt scale (60), and the fiberglass weighed by the belt scale (60) being conveyed to an air-forming mesh box (80), characterized in that, The powder-spreading mechanism (70) includes: The front and rear material distribution structure (71) includes a powder-spreading cylinder (711) mounted on the mounting frame (61) of the belt scale (60). The powder-spreading cylinder (711) is divided into several chambers. All chambers of the powder-spreading cylinder (711) are connected to a transmission chamber (712). The transmission chamber (712) is connected to a dividing cylinder (713). Several equal distribution pipes (714) are provided at both ends of the equal distribution cylinder (713). The chambers on the powder-spreading cylinder (711) input the particles into the transmission chamber (712) and distribute them evenly into each equal distribution pipe (714) on the equal distribution cylinder (713) through the transmission chamber (712), so that all the equal distribution pipes (714) evenly spread the particles on the glass fiber. The flow-guiding and flushing structure includes an arc-shaped guide hopper (721) disposed on the outside of the equalizing pipe (714). Two powder guiding chambers (722) are disposed at both ends of the inner side of the arc-shaped guide hopper (721). An air guide pipe (723) is disposed in the middle of the arc-shaped guide hopper (721). A dispersing member (724) disposed at the bottom of the arc-shaped guide hopper (721) is connected to the end of the air guide pipe (723). The air entering through the air guide pipe (723) draws out the powder in the powder guiding chamber (722) through the Venturi effect and disperses it into the glass fiber through the dispersing member (724). The arc-shaped guide hopper (721) includes an outer extension plate (7211) connected to the outer edge of the top of the distributing chamber (7133). An arc-shaped surface (7212) is connected to the bottom of the outer extension plate (7211). The two ends of the arc-shaped surface (7212) are connected to the distributing chamber (7133) through two sealing plates (7213). A Venturi structure (7214) is provided inside the arc-shaped surface (7212). The Venturi structure (7214) includes a flow section (72141) connected to the air duct (723) and a constriction section (72142). The constriction section (72142) is connected to the powder guiding cavity (722). When the air is introduced through the flow section (72141) and enters the constriction section (72142), it will suck in some of the powder in the powder guiding cavity (722) and spray it directly into the interior of the glass fiber.

2. The glass fiber elastic mat production line according to claim 1, characterized in that, The equal-dividing cylinder (713) is a cylindrical structure. The equal-dividing cylinder (713) includes a solid base (7131). A material-dividing shovel (7132) is integrally formed on the top of the solid base (7131). A material-dividing cavity (7133) is connected to the outside of the solid base (7131). The material-dividing shovel (7132) divides the material-dividing cavity (7133) into front and rear chambers.

3. The glass fiber elastic mat production line according to claim 1, characterized in that, The equal distribution pipe (714) includes a storage cavity (7141) connected to a solid base (7131). A quantity element (7142) is provided at the front end of the storage cavity (7141), and a fabric distribution cavity pipe (7143) is connected to the rear end of the storage cavity (7141).

4. A glass fiber elastic mat production line according to claim 3, characterized in that, The metering component (7142) includes a rotating shaft (71421) that is movably inserted into the storage cavity (7141). A flip plate (71422) is connected to the outside of the rotating shaft (71421). The flip plate (71422) is driven by a rotating motor (71423) located outside the storage cavity (7141). A time relay is provided on the rotating motor (71423).

5. A glass fiber elastic mat production line according to claim 3, characterized in that, The fabric cavity tube (7143) has a V-shaped structure. The top of the V-shaped structure is connected to the storage cavity (7141), and the two openings of the storage cavity (7141) are connected to the powder guiding cavity (722).

6. A glass fiber elastic mat production line according to claim 1, characterized in that, The dispersing component (724) includes a long frame (7241) connected to the powder guiding cavity (722) and the lower end of the arc-shaped guide hopper (721). A middle section inclined plate (7242) is provided in the middle of the inner side of the long frame (7241), and lateral inclined plates (7243) connected to the long frame (7241) are respectively provided on both sides of the middle section inclined plate (7242).

7. A glass fiber elastic mat production process, using a glass fiber elastic mat production line according to any one of claims 1 to 6, characterized in that, It includes the following steps: S1: The purchased glass fiber is poured into the unpacking machine (10) for unpacking, and the unpacked glass fiber is passed into the loosening machine (20) for loosening. The loosened glass fiber is stored in the warehouse (30). S2: The glass fiber stored in the large warehouse (30) is gradually fed into the secondary opening machine (40), and the glass fiber after secondary opening is fed into the vibrating cotton box (50) through the air duct for storage. S3: The conveyor belt in the vibrating cotton box (50) gradually feeds the material to the belt scale (60). When the glass fiber moves on the belt scale (60), it is sprinkled with powder by the powder-spreading mechanism (70). S4: The belt scale (60) adjusts the conveying speed according to the amount of material fed into the vibrating cotton box (50). The powdered glass fiber is fed into the air-flow forming box (80) and a thick felt is formed at the bottom of the air-flow forming box (80). S5: The thick felt formed by the airflow forming mesh box (80) is transported to the baking area (90). The thick felt is clamped according to the required thickness. Hot air at 170℃-250℃ is circulated and guided up and down in the chamber by a high-pressure circulating fan. The product is evenly cured for 3 to 30 minutes. The cured product is cut into products by the cutting mechanism (100) according to the requirements. The cut products are rolled up and packaged.

8. The glass fiber elastic mat production process according to claim 7, characterized in that, The powder-spreading mechanism (70) disperses a portion of the powder onto the surface of the glass fiber through the arc-shaped guide hopper (721) and flushes a portion of the powder into the interior of the glass fiber through the air duct (723).

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