Glass fiber elastic felt production line and production process thereof

Abstract

The glass fiber elastic felt production line comprises a bale opener, an opener, a large bin, a secondary opener, a vibration cotton box, a belt weigher, a powder scattering mechanism and an air flow net forming box, and the powder scattering mechanism comprises a front-section and rear-section material distribution structure which comprises a powder scattering barrel, a transmission cavity, an equal-division barrel and a plurality of equal-division pipes; the flow guiding and material flushing structure comprises an arc-shaped material guiding hopper arranged on the outer side of the uniform distribution pipe, two powder guiding cavities are formed in the two ends of the inner side of the arc-shaped material guiding hopper, an air guiding pipe is arranged in the middle of the arc-shaped material guiding hopper, and the tail end of the air guiding pipe is connected with a dispersing piece arranged at the bottom end of the arc-shaped material guiding hopper. The powder in the powder guide cavity is sucked out by air introduced by the air guide pipe through the Venturi effect, and the powder is dispersed and flushed into the glass fibers through the dispersing piece. According to the glass fiber mat, adhesive particles can be uniformly dispersed into all areas of the glass fiber mat.

Description

Technical Field

[0001] The invention relates to glass fiber processing equipment, in particular to a glass fiber elastic felt production line and a production process thereof. Background Art

[0002] With the development needs of today's society, the application of natural gas is becoming more and more extensive. At room temperature, the volume of LNG (liquefied natural gas) is only 1 / 625 of that in gaseous state. It is stored in LNG cryogenic storage tanks in liquefied form at a temperature of about -162°C. Elastic felt has outstanding advantages in the application of LNG storage. It can not only ensure the structural integrity and safety of the storage tank, but also improve its thermal insulation and fireproof performance to adapt to extreme working environments. In order to improve the thermal insulation effect of elastic felt, binders are added during the preparation of glass fiber wool to improve the thermal insulation effect of elastic felt.

[0003] The traditional adhesive spreading structure adopts a brush scraping method during spreading. The adhesive is swept onto the guide plate by the brush and then sprinkled on the glass fiber. Although it can achieve the purpose of adding adhesive to the glass fiber and improving its thermal insulation strength, the falling is not uniform enough, which can easily lead to uneven insulation area during the molding stage. The existing technology sets the entire spreader on a laterally movable structure to improve the uniformity of spreading. However, on the one hand, the moving spreader is difficult to adapt to the glass fiber that is also in a moving state, which will still cause uneven distribution. On the other hand, the moving spreader is more difficult to control the direction, and the direction of the falling particles is difficult to control, and precision cannot be achieved.

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

[0005] The present invention provides a glass fiber elastic felt production line and a production process thereof, which can effectively solve the above problems.

[0006] The present invention is achieved in that:

[0007] A glass fiber elastic felt production line comprises a bale opener for receiving cotton, wherein the discharge end of the bale opener is connected to an opener, wherein the opener is connected to a large bin through a pipeline, wherein the large bin is connected to a secondary opener through a conveyor belt, wherein the secondary opener is connected to a vibrating cotton box through a pipeline, wherein the cotton in the vibrating cotton box is transported to a belt scale, wherein a powdering mechanism is arranged above the belt scale, wherein the glass fiber weighed by the belt scale is transported to an airflow net box, wherein the powdering mechanism comprises:

[0008] Front and rear section material distribution structure, a mounting frame is arranged at the upper end of the belt scale, the front and rear section material distribution structure comprises a powder spreading cylinder arranged on the mounting frame, the powder spreading cylinder is equally divided into a plurality of chambers, all the chambers of the powder spreading cylinder are connected to a transmission chamber, the transmission chamber is connected to an equal distribution cylinder, a plurality of equal distribution tubes are arranged at both the front and rear ends of the equal distribution cylinder, the chambers on the powder spreading cylinder input particles into the transmission chamber, and are evenly distributed to each equal distribution tube on the equal distribution cylinder through the transmission chamber, so that all the equal distribution tubes evenly spread the particles on the glass fiber;

[0009] The flow-guiding and punching structure comprises an arc-shaped material-guiding hopper arranged outside an equalizing tube, two powder-guiding cavities are arranged at both ends of the inner side of the arc-shaped material-guiding hopper, an air-guiding duct is arranged in the middle of the arc-shaped material-guiding hopper, and the end position of the air-guiding duct is connected to a dispersion component arranged at the bottom end of the arc-shaped material-guiding hopper. The wind introduced into the air-guiding duct sucks out the powder in the powder-guiding cavity through the Venturi effect and disperses and punches the powder into the glass fiber through the dispersion component.

[0010] As a further improvement, the dividing cylinder is a cylinder-type structure, which includes a solid base, a dividing shovel is integrally formed on the top of the solid base, and the outer side of the solid base is connected to a dividing cavity, and the dividing shovel divides the dividing cavity into two front and rear chambers.

[0011] As a further improvement, the equalizing tube comprises a material storage cavity connected to the solid base, a quantitative piece is arranged at the front end of the material storage cavity, and a material distribution cavity tube is connected to the rear end of the material storage cavity.

[0012] As a further improvement, the quantitative member includes a rotating shaft movably inserted in the material storage chamber, the outer side of the rotating shaft is connected to a flip plate, the flip plate is driven by a rotating motor arranged outside the material storage chamber, and the rotating motor is provided with a time relay.

[0013] As a further improvement, the material distribution cavity tube is a V-shaped structure, the top end of the V-shaped structure is communicated with the material storage cavity, and the two openings of the material storage cavity are communicated with the powder guiding cavity.

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

[0015] As a further improvement, a Venturi structure is provided in the arc surface, and the Venturi structure includes a flow section and a contraction section connected to the air guide pipe, and the contraction section is communicated with the powder guide chamber. When the incoming wind is input into the contraction section through the flow section, part of the powder in the powder guide chamber will be sucked in and directly sprayed into the interior of the glass fiber.

[0016] As a further improvement, the dispersing member comprises an elongated frame connected to the powder guiding chamber and the lower end of the arc-shaped guiding hopper, a middle inclined plate is arranged in the middle of the inner side of the elongated frame, and lateral inclined plates connected to the elongated frame are arranged on both sides of the middle inclined plate.

[0017] The present invention also discloses a glass fiber elastic felt production process, which uses the above-mentioned glass fiber elastic felt production line and comprises the following steps:

[0018] S1: Pour the purchased glass fiber into the bagging machine for bagging, and pass the opened glass fiber into the loosening machine for loosening, and store the opened glass fiber in the large warehouse;

[0019] S2: The glass fibers stored in the large warehouse are gradually introduced into the secondary opening machine, and the glass fibers after the secondary opening are input into the vibrating cotton box through the air duct for storage;

[0020] S3: The conveyor belt in the vibrating cotton box gradually loads the material to the belt scale, and the glass fiber is powdered by the powdering mechanism when it moves on the belt scale;

[0021] S4: The belt scale adjusts the conveying speed according to the feeding amount of the vibrating cotton box. The powdered glass fiber is fed into the airflow net box to form a thick felt at the bottom of the airflow net box.

[0022] S5: The thick felt formed by the airflow mesh box is transported to the baking area, clamped according to the required thickness, and the 170℃-250℃ hot air is circulated and guided up and down in the chamber by a high-pressure circulation fan. The air is evenly cured for 3 to 30 minutes. The cured product is cut into products by a cutting mechanism according to demand, and 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 the arc-shaped guide hopper when spreading the powder, and flushes a portion of the powder into the interior of the glass fiber through the air guide pipe.

[0024] The beneficial effects of the present invention are:

[0025] In the existing adhesive feeding structure, a brush is mostly used to scrape the adhesive downwards to achieve uniform dispersion of the adhesive. However, most of the adhesives are in powder form. If a brush is used to scrape the adhesive downwards, the powder is easily splashed, resulting in powder loss and unevenness. Therefore, the present invention divides the entire powdering process into two sections by setting up a front and rear section dividing structure. After the powder enters the powdering barrel and the transmission cavity, it is stored in the front and rear dividing tubes. After the dividing tubes are full of powder, the first powdering is carried out through the dividing tube at the front end position. After the glass fiber that has been powdered for the first time reaches the dividing tube at the rear end position after the movement of the belt scale, it is powdered again through the dividing tube at the rear end, and the positions of the two powdering are staggered, thereby ensuring the uniformity of the powdering.

[0026] When the powder enters the equal distribution cylinder, since the powder needs to be discharged in both the front and rear directions, the powder also needs to be evenly divided into two parts. Therefore, the equal distribution cylinder of the present invention is provided with a dividing shovel, and the powder falling in the middle is divided into two parts by the dividing shovel, so that enough powder can be stored on the equal distribution tubes at both ends, and the material can be discharged multiple times to avoid the phenomenon of concentration in a certain area.

[0027] During the unloading process of the equalizing tube, since the belt scale needs to measure at all times, the unloading amount of the equalizing tube in each area is fixed. Therefore, the present invention is provided with a quantitative component on each equalizing tube. Through the design of the quantitative component, each equalizing tube can output a fixed amount of powder, thereby fixing the amount of powder in each area, thereby promoting uniform distribution of adhesive in each area.

[0028] The quantitative powder needs to be input into the flow-guiding and punching structure. In order to directly cooperate with the two powder guide cavities, the present invention sets the material distribution cavity tube into a V-shaped structure, and guides the quantitative powder into the flow-guiding and punching structure through a mid-section bifurcation, thereby ensuring that the powder can be matched with the glass fiber in sections, allowing the powder to be more evenly distributed in the glass fiber.

[0029] Although the powder discharged from the equalizing tubes at both ends can achieve secondary powder sprinkling and cover as evenly as possible, it is still easy for the powder to splash and float around in the air, and the powder after sprinkling can only float on the surface of the glass limiter. In the later meshing process, it is extremely easy to be separated and float inside the airflow mesh box, resulting in poor thermal insulation performance of the elastic felt after molding. Therefore, the present invention provides a guide and punching structure on the basis of the front and rear section material distribution structure. The powder of the equalizing tube will enter the powder guide cavity at both ends for natural distribution. At the same time, the air guide duct will let in air, and let the wind enter the arc-shaped material guide hopper to produce a Venturi effect to suck in part of the powder in the powder guide cavity, so that part of the powder can follow the distribution and go deep into the glass fiber, so that the adhesive of the glass fiber is more evenly distributed, thereby improving the production quality.

[0030] Since the entire flow-guiding and punching structure needs to be ventilated and powder materials need to be applied, the space inside the entire flow-guiding and punching structure needs to be closed. Therefore, the present invention first sets the arc-shaped guide hopper as an arc-shaped surface to facilitate the discharge of materials, and performs sealing treatment on the outside and top of the arc-shaped surface, and closes it through the external expansion plate and the sealing plate, so that the entire arc-shaped guide hopper is closed and set, so that it will only be discharged from the bottom area, thereby forming a uniform falling surface and avoiding overflow from the side.

[0031] In the process of powder sliding down from the arc-shaped guide hopper, it is divided into two sections. One section is the sliding of the powder guide chamber itself, and the other section is the accelerated sliding in the Venturi structure of the arc-shaped surface. When the air guide pipe enters the Venturi structure, due to the change in the pipe diameter and the communication with the powder guide chamber, part of the powder in the powder guide chamber can be sucked in, and then part of the powder is input into the interior of the glass fiber in a high kinetic energy manner, so that the adhesive is distributed both inside and outside the glass fiber. Even in the feeding air flow forming mesh box, on the basis of the relatively uniform distribution of the adhesive itself, it can be more conducive to the formation of thick felt.

[0032] Regardless of whether it is powered powder or unpowered powder, it will eventually be output from the bottom of the arc-shaped guide hopper. In order to ensure uniformity, the dispersion piece at the bottom of the arc-shaped guide hopper is divided into a middle inclined piece and a lateral inclined piece. The middle inclined piece corresponds to the position of the Venturi structure, so that the accelerated powder can pass through unimpeded, and the lateral inclined piece corresponds to the powder that naturally falls in the powder guide chamber, so that the naturally falling powder can be distributed more evenly under the guide, forming a uniform adhesive distribution surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is a structural schematic diagram of a glass fiber elastic felt production line of the present invention.

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

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

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

[0038] Figure 5 It is a structural schematic diagram of the equal distribution pipe of the present invention.

[0039] Figure 6 It is a structural schematic diagram of the flow-guiding punching structure of the present invention.

[0040] Figure 7 It is a structural schematic diagram of the glass fiber landing point in different beating frequencies of the present invention.

[0041] Figure 8 It is a glass fiber drop point diagram in thin web molding in the prior art.

[0042] Fig. 9 It is a diagram of the drop points of glass fibers in the thick felt molding of the present invention.

[0043] In the figure:

[0044] Bale opener 10, opener 20, large bin 30, secondary opener 40, vibrating cotton box 50, belt scale 60, mounting frame 61, powder spreading mechanism 70, front and rear material distribution structure 71, powder spreading cylinder 711, transmission chamber 712, equal distribution cylinder 713, solid base 7131, material distribution shovel 7132, material distribution chamber 7133, equal distribution pipe 714, material storage chamber 7141, quantitative member 7142, rotating shaft 71421, flip plate 71422, rotating Motor 71423, cloth cavity tube 7143, arc-shaped material guide hopper 721, outer extension plate 7211, arc-shaped surface 7212, sealing plate 7213, Venturi structure 7214, flow section 72141, contraction section 72142, powder guide cavity 722, air guide duct 723, dispersion piece 724, elongated frame 7241, middle inclined piece 7242, lateral inclined piece 7243, air flow forming mesh box 80, baking area 90, cutting mechanism 100. DETAILED DESCRIPTION

[0045] In order to make the embodiments of the present invention, all belong to 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 invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0046] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as referring to the purpose, technical solutions and advantages of the methods. To be more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work indicate or imply relative importance or implicitly indicate the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0047] Reference Figure 1 to Figure 6 As shown, a glass fiber elastic felt production line includes a bale opener 10 for receiving cotton, the discharge end of the bale opener 10 is communicated with an opener 20, the opener 20 is connected to a large bin 30 through a pipeline, the large bin 30 is communicated with a secondary opener 40 through a conveyor belt, the secondary opener 40 is connected to a vibrating cotton box 50 through a pipeline, the cotton in the vibrating cotton box 50 is transported to a belt scale 60, a powdering mechanism 70 is arranged above the belt scale 60, the glass fiber weighed by the belt scale 60 is transported to an airflow net box 80, the powdering mechanism 70 includes: a front and rear section material dividing structure 71, a mounting frame 61 is arranged at the upper end of the belt scale 60, the front and rear section material dividing structure 71 includes a powdering barrel 711 arranged on the mounting frame 61, the powdering barrel 711 is equally divided into a plurality of chambers, all chambers of the powdering barrel 711 are connected to a transmission chamber 712 The transmission chamber 712 is connected to an equalizing cylinder 713. The front and rear ends of the equalizing cylinder 713 are both provided with a plurality of equalizing tubes 714. The chamber on the powder spreading cylinder 711 inputs the particles into the transmission chamber 712, and the particles are evenly distributed to each equalizing tube 714 on the equalizing cylinder 713 through the transmission chamber 712, so that all the equalizing tubes 714 evenly spread the particles on the glass fiber; the flow-guiding and punching structure includes a plurality of equalizing tubes 714 arranged on the equalizing tubes 714. An arc-shaped material guide hopper 721 is provided on the outside, and two powder guide chambers 722 are arranged at both ends of the inner side of the arc-shaped material guide hopper 721. An air guide pipe 723 is arranged in the middle of the arc-shaped material guide hopper 721. The end position of the air guide pipe 723 is connected to a dispersion piece 724 arranged at the bottom end of the arc-shaped material guide hopper 721. The wind introduced by the air guide pipe 723 sucks out the powder in the powder guide chamber 722 through the Venturi effect and disperses it into the glass fiber through the dispersion piece 724.

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

[0049] The binder and powder mentioned in this embodiment are both phenolic resin, which is a commonly used binder. In this case, it is in powder form and will be completely dissolved in the glass fiber during the heating stage after the thick felt is formed.

[0050] The bag opener 10, the loosening machine 20, the large bin 30, the secondary loosening machine 40, the vibrating cotton box 50, the belt scale 60, the airflow mesh box 80, the baking area 90, and the cutting mechanism 100 mentioned in this embodiment are all prior arts, so they are not expanded in detail, and no detailed enlarged diagram is included in the figure.

[0051] In the existing adhesive feeding structure, a brush is mostly used to scrape the adhesive downwards to achieve uniform dispersion of the adhesive. However, most of the adhesives are in powder form. If a brush is used to scrape the adhesive downwards, the powder is easily splashed, resulting in powder loss and unevenness. Therefore, the present invention divides the entire powdering process into two sections by setting up a front and rear section dividing structure 71. After the powder enters the powdering cylinder 711 and the transmission cavity 712, it is stored in the front and rear equalizing tubes 714. After the equalizing tube 714 is fully stored with powder, the first powdering is performed through the equalizing tube 714 at the front end position. After the glass fiber that has been powdered for the first time reaches the equalizing tube 714 at the rear end position after the movement of the belt scale 60, it is powdered again through the equalizing tube 714 at the rear end, and the positions of the two powdering are staggered, thereby ensuring the uniformity of the powdering.

[0052] When the powder enters the equalizing barrel 713, since the powder needs to be discharged in both the front and rear directions, the powder also needs to be evenly divided into two parts. Therefore, the equalizing barrel 713 of this embodiment is a cylindrical structure, and the equalizing barrel 713 includes a solid base 7131. A dividing shovel 7132 is integrally formed on the top of the solid base 7131. The outer side of the solid base 7131 is connected to a dividing cavity 7133. The dividing shovel 7132 divides the dividing cavity 7133 into two chambers, front and rear. The equalizing barrel 713 is provided with a dividing shovel 7132, and the powder falling in the middle is divided into two parts by the dividing shovel 7132, so that enough powder can be stored on the equalizing tubes 714 at both ends, and the material can be discharged multiple times to avoid the phenomenon of concentration in a certain area.

[0053] During the unloading process of the equalizing tube 714, since the belt scale 60 needs to measure at all times, the unloading amount of the equalizing tube 714 in each area is fixed. Therefore, the equalizing tube 714 of this embodiment includes a storage chamber 7141 connected to the solid base 7131, and the front end of the storage chamber 7141 is provided with a quantitative piece 7142, and the rear end of the storage chamber 7141 is connected to a distribution chamber tube 7143. A quantitative piece 7142 is provided on each equalizing tube 714. Through the design of the quantitative piece 7142, each equalizing tube 714 can output a fixed amount of powder, thereby fixing the amount of powder in each area, thereby promoting uniform distribution of adhesive in each area.

[0054] The quantitative component 7142 is quantitative based on the time it takes for the powder to pass through. Specifically, the quantitative component 7142 includes a rotating shaft 71421 movably inserted in the storage chamber 7141, and the outer side of the rotating shaft 71421 is connected to a flip plate 71422. The flip plate 71422 is driven by a rotating motor 71423 arranged on the outer side of the storage chamber 7141. The rotating motor 71423 is provided with a time relay. After each rotation of the rotating motor 71423, the time relay starts timing, so that a fixed amount of powder can be released within a cycle, thereby achieving more accurate material control.

[0055] The quantitative powder needs to be input into the flow-guiding and punching structure. In order to directly cooperate with the two powder guide chambers 722, the distribution cavity tube 7143 of this embodiment is a V-shaped structure. The top of the V-shaped structure is connected with the storage cavity 7141, and the two openings of the storage cavity 7141 are connected with the powder guide chamber 722. The distribution cavity tube 7143 is set to a V-shaped structure, and the quantitative powder is guided into the flow-guiding and punching structure by bifurcation in the middle section, thereby ensuring that the powder can cooperate with the glass fiber in sections, so that the powder is more evenly distributed in the glass fiber.

[0056] Although the powder discharged from the equalizing tube 714 at both ends can achieve secondary powdering and cover as evenly as possible, it is still easy for the powder to splash and float around in the air, and the powder after powdering can only float on the surface of the glass limiter. In the later meshing process, it is extremely easy to be separated and float inside the airflow mesh box 80, resulting in poor thermal insulation performance of the elastic felt after molding. Therefore, the present invention provides a guide and punching structure on the basis of the front and rear section material distribution structure 71. The powder of the equalizing tube 714 will enter the powder guide cavity 722 at both ends for natural distribution. At the same time, the air guide duct 723 will let in air, and let the wind enter the arc-shaped material guide hopper 721 to produce a Venturi effect to suck in part of the powder in the powder guide cavity 722, so that part of the powder can follow the distribution and go deep into the glass fiber, so that the adhesive of the glass fiber is more evenly distributed, thereby improving the production quality.

[0057] Since the entire flow-guiding and punching structure needs to be ventilated and powder materials need to be dispensed, the space within the entire flow-guiding and punching structure needs to be closed. Therefore, the arc-shaped guide hopper 721 of this embodiment includes an outer extension plate 7211 connected to the outer edge of the top of the distribution chamber 7133, and 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 distribution chamber 7133 through two sealing plates 7213. First, the arc-shaped guide hopper 721 is set as an arc-shaped surface 7212 to facilitate the discharge of materials, and the outer side and the top of the arc-shaped surface 7212 are closed, and the outer extension plate 7211 and the sealing plate 7213 are closed, so that the entire arc-shaped guide hopper 721 is closed, so that it will only be discharged from the bottom area, thereby forming a uniform falling surface to avoid overflow from the side.

[0058] In the process of powder sliding down from the arc-shaped guide hopper 721, a venturi structure 7214 is arranged in the arc-shaped surface 7212, and the venturi structure 7214 includes a flow section 72141 connected to the air guide pipe 723 and a contraction section 72142, and the contraction section 72142 is communicated with the powder guide chamber 722. When the wind is input into the contraction section 72142 through the flow section 72141, part of the powder in the powder guide chamber 722 is sucked in and directly sprayed into the interior of the glass fiber. The descent is divided into two sections, one section is the descent of the powder guide chamber 722 itself, and the other section is the descent of the powder guide chamber 722 itself. The other section is the accelerated descent that occurs in the Venturi structure 7214 of the curved surface 7212. The air duct 723 enters the Venturi structure 7214. Due to the change in the tube diameter and the communication with the powder guide chamber 722, part of the powder in the powder guide chamber 722 can be sucked in, and then part of the powder is input into the interior of the glass fiber in a high kinetic energy manner, so that the adhesive is distributed both inside and outside the glass fiber. Even in the feeding air flow forming mesh box 80, on the basis that the adhesive itself is already distributed relatively evenly, it can be more conducive to the formation of a thick felt.

[0059] No matter it is powered powder or unpowered powder, it is finally output from the bottom of the arc-shaped guide hopper 721. In order to ensure uniformity, the dispersing member 724 includes an elongated frame 7241 connected to the powder guide chamber 722 and the lower end of the arc-shaped guide hopper 721. A middle section inclined piece 7242 is provided in the middle of the inner side of the elongated frame 7241. Side inclined pieces 7243 connected to the elongated frame 7241 are provided on both sides of the middle section inclined piece 7242. The dispersing member 724 at the bottom of the arc-shaped guide hopper 721 is divided into a middle section inclined piece 7242 and a side inclined piece 7243. The middle section inclined piece 7242 corresponds to the position of the venturi structure 7214, so that the accelerated powder can pass out unimpeded. The side inclined piece 7243 corresponds to the powder naturally falling in the powder guide chamber 722, so that the naturally falling powder can be distributed more evenly under the guidance to form a uniform adhesive distribution surface.

[0060] Another embodiment of the present invention further discloses a glass fiber elastic felt production process, which uses the above-mentioned glass fiber elastic felt production line and comprises the following steps:

[0061] S1: pouring the purchased glass fibers into the bag opener 10 for opening, and passing the opened glass fibers into the loosening machine 20 for loosening, and storing the opened glass fibers in the large bin 30;

[0062] S2: gradually passing the glass fibers stored in the large bin 30 into the secondary opening machine 40, and the glass fibers after the secondary opening are input into the vibrating cotton box 50 through the air duct for storage;

[0063] S3: The conveyor belt in the vibrating cotton box 50 gradually loads the material to the belt scale 60, and the glass fiber is powdered by the powdering mechanism 70 when moving on the belt scale 60;

[0064] S4: The belt scale 60 adjusts the conveying speed according to the feeding amount of the vibrating cotton box 50, and the powdered glass fiber is fed into the airflow net box 80 to form a thick felt at the bottom of the airflow net box 80;

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

[0066] Furthermore, when spreading powder, the powder spreading mechanism 70 disperses a part of the powder onto the surface of the glass fiber through the arc-shaped guide hopper 721 , and flushes a part of the powder into the interior of the glass fiber through the air guide duct 723 .

[0067] At different beater frequencies, the positions where the core material falls on the web structure are different. In this embodiment, the beater frequency in the airflow web box 80 is 20-40 Hz, in order to ensure that the core material is nearly perpendicular to the web structure when it falls, while retaining a certain inclination angle with the output curtain direction, thereby increasing the interweaving of the web. When making thin felt, the beater frequency is 40-70 Hz. The specific drop point effect can be seen in Figure 7 .

[0068] The existing web-forming structure when manufacturing thin webs is relatively advanced, such as Figure 8As shown, the suction position at the bottom of the airflow net 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 net-forming structure is tangent to the direction in which the output curtain moves. The glass fibers are interwoven into a net on the net-forming structure through the anisotropic output, so as to better form a thin net. In this embodiment, the product is an elastic felt, and its most important performance is the rebound performance. Therefore, as shown in FIG. Fig. 9 As shown, the air suction position at the bottom of the airflow net box 80 is located in the middle, so that the glass fiber is nearly perpendicular to the output curtain, and 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 whether the airflow laminating machine can form thick felt in one time. When the feed amount is set to a certain amount, according to the formula of gram weight = feed amount * 1000 / output curtain speed * 60*1.65, it can be seen that the thickness (gram weight) of the formed web can be controlled by adjusting the output curtain speed. When making a thin web, the output curtain speed is 10-50 m / min. In this embodiment, the speed of the output curtain at the lower end of the airflow laminating box 80 is 0.8-2 m / min. The actual working speed can be adjusted by the feed and the required gram weight.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A glass fiber elastic felt production line, comprising a bale opener (10) for receiving cotton, the discharge end of the bale opener (10) is connected to an opener (20), the opener (20) is connected to a large bin (30) through a pipeline, the large bin (30) is connected to a secondary opener (40) through a conveyor belt, the secondary opener (40) is connected to a vibrating cotton box (50) through a pipeline, the cotton in the vibrating cotton box (50) is transported to a belt scale (60), a powdering mechanism (70) is arranged above the belt scale (60), the glass fiber weighed by the belt scale (60) is transported to an air-laid net box (80), characterized in that The powder spreading mechanism (70) comprises: A front and rear section material distribution structure (71), wherein a mounting frame (61) is disposed at the upper end of the belt scale (60), and the front and rear section material distribution structure (71) comprises a powder spreading cylinder (711) disposed on the mounting frame (61), wherein the powder spreading cylinder (711) is equally divided into a plurality of chambers, wherein all chambers of the powder spreading cylinder (711) are connected to a transmission chamber (712), wherein the transmission chamber (712) is connected to an equal distribution cylinder (713), and a plurality of equal distribution tubes (714) are disposed at both the front and rear ends of the equal distribution cylinder (713), wherein the chambers on the powder spreading cylinder (711) input particles into the transmission chamber (712), and the particles are evenly distributed to each equal distribution tube (714) on the equal distribution cylinder (713) through the transmission chamber (712), so that all the equal distribution tubes (714) evenly spread the particles on the glass fibers; The flow guiding and punching structure comprises an arc-shaped material guiding hopper (721) arranged outside an equalizing tube (714), two powder guiding chambers (722) are arranged at two ends of the inner side of the arc-shaped material guiding hopper (721), an air guiding pipe (723) is arranged in the middle of the arc-shaped material guiding hopper (721), and the end position of the air guiding pipe (723) is connected to a dispersing member (724) arranged at the bottom end of the arc-shaped material guiding hopper (721), and the wind introduced by the air guiding pipe (723) sucks out the powder in the powder guiding chamber (722) through the Venturi effect and disperses the powder into the glass fiber through the dispersing member (724).

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

3. A glass fiber elastic mat production line according to claim 1, characterized in that: The distributing tube (714) comprises a material storage chamber (7141) connected to a solid base (7131), a quantitative member (7142) is provided at the front end of the material storage chamber (7141), and a material distributing chamber tube (7143) is connected to the rear end of the material storage chamber (7141).

4. A glass fiber elastic mat production line according to claim 3, characterized in that: The quantitative member (7142) comprises a rotating shaft (71421) movably inserted in the material storage chamber (7141); the outer side of the rotating shaft (71421) is connected to a flip plate (71422); the flip plate (71422) is driven by a rotating motor (71423) arranged on the outer side of the material storage chamber (7141); and a time relay is arranged on the rotating motor (71423).

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

6. A glass fiber elastic mat production line according to claim 1, characterized in that: The arc-shaped material guide hopper (721) comprises an outer extension plate (7211) connected to the outer edge of the top of the material distribution chamber (7133), and a curved surface (7212) is connected below the outer extension plate (7211). The two ends of the curved surface (7212) are connected to the material distribution chamber (7133) via two sealing plates (7213).

7. A glass fiber elastic mat production line according to claim 6, characterized in that: A Venturi structure (7214) is disposed in the arc-shaped surface (7212), and the Venturi structure (7214) comprises a flow section (72141) connected to the air guide pipe (723) and a contraction section (72142), and the contraction section (72142) is communicated with the powder guide chamber (722), and when the incoming wind is input into the contraction section (72142) through the flow section (72141), part of the powder in the powder guide chamber (722) is sucked in and directly sprayed into the interior of the glass fiber.

8. The glass fiber elastic mat production line according to claim 1, characterized in that: The dispersing member (724) comprises an elongated frame (7241) connected to the powder guiding chamber (722) and the lower end of the arc-shaped guiding hopper (721), a middle inclined plate (7242) is arranged in the middle of the inner side of the elongated frame (7241), and lateral inclined plates (7243) connected to the elongated frame (7241) are arranged on both sides of the middle inclined plate (7242).

9. A glass fiber elastic felt production process, using a glass fiber elastic felt production line according to any one of claims 1 to 8, characterized in that: The following steps are included: S1: pouring the purchased glass fibers into a bagging machine (10) for opening, and passing the opened glass fibers into an opening machine (20) for opening, and storing the opened glass fibers in a large bin (30); S2: gradually passing the glass fibers stored in the large bin (30) into the secondary opening machine (40), and the glass fibers after the secondary opening are input into the vibrating cotton box (50) through the air duct for storage; S3: The conveyor belt in the vibrating cotton box (50) gradually loads the material to the belt scale (60), and the glass fiber is powdered by the powdering mechanism (70) when it moves on the belt scale (60); S4: The belt scale (60) adjusts the conveying speed according to the feeding amount of the vibrating cotton box (50), and the powdered glass fibers are fed into the airflow net box (80), and a thick felt is formed at the bottom of the airflow net box (80); S5: The thick felt formed in the airflow mesh box (80) is transported to the baking area (90), clamped according to the required thickness, and 170°C-250°C hot air is circulated and guided up and down in the chamber by a high-pressure circulation fan, and evenly cured for 3 to 30 minutes. The cured product is cut into products by a cutting mechanism (100) according to demand, and the cut products are rolled and packaged.

10. A process for producing glass fiber elastic felt according to claim 9, characterized in that: When spreading powder, 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 guide pipe (723).

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