Alkali-free glass fiber impregnating compound uniform coating and dipping device and coating and dipping method

Abstract

The invention discloses an alkali-free glass fiber impregnating compound uniform coating and dipping device and a coating and dipping method, and relates to the technical field of alkali-free glass fiber production.The device comprises a bearing plate, a set of supporting legs are installed on the bottom face of the bearing plate, a discharging groove is formed in the upper surface of the bearing plate, and a lower coating and dipping roller is rotationally connected to the inner wall of the discharging groove; a supporting frame is mounted on the upper surface of the bearing plate, two adjusting grooves are formed in the outer surface of the supporting frame, and connecting blocks are slidably connected to the inner walls of the two adjusting grooves; by means of the arranged adjusting assembly, the position of the upper coating and dipping roller can be conveniently adjusted, so that the distance between the lower coating and dipping roller and the upper coating and dipping roller can be adjusted, the pressure applied to alkali-free glass fibers by the lower coating and dipping roller and the upper coating and dipping roller can be adjusted, and the adaptability of the device is improved; the alkali-free glass fibers with different specifications can be conveniently coated and dipped, the situation that the glass fibers are damaged or the impregnating compound cannot be uniformly coated is avoided, and the production quality of the alkali-free glass fibers can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of alkali-free glass fiber production, in particular to a device and method for uniformly coating and impregnating an alkali-free glass fiber impregnating agent. Background Art

[0002] Alkali-free glass fiber, whose main components include silica, alumina, etc., has excellent electrical insulation due to its unique chemical composition, can effectively resist current interference, and is widely used in insulating materials of electronic equipment. At the same time, it also has high mechanical strength. In the aerospace field, it is used to manufacture structural components of aircraft. In the construction industry, it can enhance the toughness of materials such as cement products and extend their service life. However, the surface of alkali-free glass fiber is relatively smooth and its adhesion to other matrix materials is poor. In order to improve this situation, it needs to be impregnated with a wetting agent. The wetting agent can form a protective film on the surface of the glass fiber, reduce friction between fibers, and prevent wear and breakage in subsequent processing. Problems, thereby greatly improving the comprehensive performance of composite materials and expanding the application of alkali-free glass fiber in more high-performance material fields.

[0003] When applying impregnation agent to alkali-free glass fiber, a coating device is required. However, the existing alkali-free glass fiber impregnation device still has certain defects when in use. The existing coating device is not adaptable enough when facing different types of alkali-free glass fibers. There are obvious differences in the thickness and fiber structure of alkali-free glass fibers of different specifications. The spacing between the coating rollers of the existing alkali-free glass fiber impregnation device is often fixed and cannot be adjusted. When processing glass fibers of different thicknesses, the pressure of the coating rollers with a fixed spacing will be too large or too small, causing the glass fibers to be damaged or unable to be evenly coated with the impregnation agent, thereby affecting the production quality of the alkali-free glass fibers. Therefore, it is of great significance to develop an alkali-free glass fiber impregnation device and a coating method for uniformly applying the impregnation agent. Summary of the invention

[0004] The purpose of the present invention is to make up for the shortcomings of the prior art and provide a device and method for uniformly coating and dipping alkali-free glass fibers with impregnating agent. The device can conveniently adjust the position of the upper coating and dipping roller, thereby adjusting the distance between the lower coating and dipping roller and the upper coating and dipping roller, and can adjust the pressure applied by the lower coating and dipping roller and the upper coating and dipping roller to the alkali-free glass fibers, thereby improving the adaptability of the device, facilitating the coating of alkali-free glass fibers of different specifications, avoiding damage to the glass fibers or the inability to uniformly coat the impregnating agent, and ensuring the production quality of the alkali-free glass fibers.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a device for uniformly coating alkali-free glass fiber impregnation agent, the device comprises a carrying plate, a group of supporting legs are installed on the bottom surface of the carrying plate, a lower material trough is provided on the upper surface of the carrying plate, the inner wall of the lower material trough is rotatably connected with a lower coating and dipping roller, a support frame is installed on the upper surface of the carrying plate, two adjusting grooves are provided on the outer surface of the support frame, the inner walls of the two adjusting grooves are slidably connected with connecting blocks, an upper coating and dipping roller is rotatably connected between the two connecting blocks, an adjusting component is arranged on the outside of the upper coating and dipping roller, a wetting agent storage bucket is installed on the bottom surface of the carrying plate, a wetting agent spraying component is installed between the wetting agent storage bucket and the supporting frame, an immersion component is installed inside the wetting agent storage bucket, and two guide components are installed on the upper surface of the carrying plate, the guide component comprises two supporting plates installed on the upper surface of the carrying plate, and a guide roller is rotatably connected between the two supporting plates.

[0006] Furthermore, the adjustment assembly includes two threaded rods, the two threaded rods are rotatably connected to the inner walls of the two adjustment grooves respectively, the outer surfaces of the two threaded rods are threadedly connected with adjustment plates, and the two adjustment plates are respectively connected to the two connecting blocks.

[0007] Furthermore, the adjustment component also includes two groups of slide grooves, and the two groups of slide grooves are respectively opened on the inner walls of the two adjustment grooves. The inner wall of each slide groove is slidably connected with a slider, and the slider is connected to the adjustment plate.

[0008] Furthermore, the adjustment assembly also includes a protection box installed on the upper surface of the support frame, the inner wall of the protection box is rotatably connected to a rotating rod, and a rotating block is installed at the front end of the rotating rod.

[0009] Furthermore, two bevel gears 1 are installed on the outer surface of the rotating rod, the top ends of the two threaded rods penetrate the bottom surface of the protective box and extend to the interior of the protective box, and the outer surface of the threaded rod is rotatably connected to the penetration point of the protective box, and the top ends of the two threaded rods are installed with bevel gears 2, and bevel gears 2 are meshed with bevel gear 1.

[0010] Furthermore, the wetting agent spraying assembly includes a square tube located on the right side of the support frame, two connecting frames are installed on the outer surface of the square tube, and the connecting frames are connected to the support frame. A group of spray heads are fixedly connected to the outer surface of the square tube, and the spray heads are adapted to the upper coating dipping roller.

[0011] Furthermore, the wetting agent spraying assembly also includes two booster pumps fixedly embedded in the outer surface of the wetting agent storage bucket, the input ends of the two booster pumps are connected to a liquid inlet pipe, the ends of the two liquid inlet pipes close to each other are equipped with filter cartridges, the output ends of the two booster pumps are connected to a liquid outlet pipe, and the top end of the liquid outlet pipe is connected to the interior of the square tube.

[0012] Furthermore, the immersion assembly includes a connecting plate located inside the impregnant storage bucket, a flexible protective cover is installed on the bottom surface of the connecting plate, and the bottom end of the flexible protective cover is connected to the inner bottom wall of the impregnant storage bucket, an immersion sponge is installed on the upper surface of the connecting plate, and the top end of the immersion sponge is in contact with the lower coating roller, a group of springs are installed between the bottom surface of the connecting plate and the inner bottom wall of the impregnant storage bucket, and the springs are located inside the flexible protective cover.

[0013] A method for uniformly applying an alkali-free glass fiber sizing agent, which is applicable to the above-mentioned uniformly applying an alkali-free glass fiber sizing agent device, comprises the following steps: Check the amount of impregnant in the impregnant storage hopper to ensure that the impregnant is sufficient and not deteriorating. At the same time, check whether the connections of each component are firm to ensure the normal operation of the equipment; According to the specifications of the alkali-free glass fiber to be coated, the rotating block drives the two bevel gears and the threaded rod to rotate, and the threaded rod drives the adjustment plate and the connecting block to move in the adjustment groove to adjust the position of the upper coating roller and determine the appropriate spacing between the lower coating roller and the upper coating roller so that the two can apply appropriate pressure to the glass fiber; Start the booster pump, which pressurizes the wetting agent in the wetting agent storage bucket and injects it into the square tube. The wetting agent in the square tube is evenly sprayed on the outer surface of the upper coating dip roller through the spray head. At the same time, the dipping sponge is in close contact with the lower coating dip roller under the action of the spring, absorbing the wetting agent in the wetting agent storage bucket, so that the surface of the lower coating dip roller is also attached with the wetting agent; The alkali-free glass fiber to be coated passes between the lower coating and dipping rollers and the upper coating and dipping rollers. During the movement of the glass fiber, the lower coating and dipping rollers and the upper coating and dipping rollers are driven to rotate, and the sizing agent on the surface of the lower coating and dipping rollers and the upper coating and dipping rollers is evenly coated on the glass fiber to complete the sizing agent coating operation; After the coating is completed, the glass fiber is sent out from the right end of the device for subsequent processing. After a batch of glass fibers is coated, the booster pump is turned off. If the equipment is not used for a long time, the residual impregnating agent in the impregnating agent storage hopper, spraying components and the surface of each roller needs to be cleaned.

[0014] Compared with the prior art, the alkali-free glass fiber sizing agent uniform coating device and coating method have the following beneficial effects: 1. The present invention allows the alkali-free glass fiber to be dipped to pass through between the lower coating and dipping roller and the upper coating and dipping roller through the coordinated arrangement of the lower coating and dipping roller, the supporting frame, the adjusting groove, the connecting block, the upper coating and dipping roller, the adjusting component, the wetting agent storage bucket, the wetting agent spraying component, the dipping liquid component and the guiding component. The alkali-free glass fiber can be supported and guided by the arranged guiding component. When the alkali-free glass fiber passes between the lower coating and dipping roller and the upper coating and dipping roller, the lower coating and dipping roller and the upper coating and dipping roller rotate, and the alkali-free glass fiber is evenly dipped by the lower coating and dipping roller. The arranged adjusting component can be conveniently used to adjust the position of the upper coating and dipping roller, thereby adjusting the spacing between the lower coating and dipping roller and the upper coating and dipping roller, and adjusting the pressure applied by the lower coating and dipping roller and the upper coating and dipping roller to the alkali-free glass fiber, thereby improving the adaptability of the device, facilitating the dipping of alkali-free glass fibers of different specifications, avoiding the situation in which the glass fibers are damaged or cannot be evenly coated with the wetting agent, and ensuring the production quality of the alkali-free glass fiber.

[0015] 2. The present invention is provided with the cooperation among the supporting frame, the adjusting groove, the connecting block, the upper coating and dipping roller, the threaded rod, the adjusting plate, the sliding groove, the sliding block, the protective box, the rotating rod, the rotating block, the bevel gear one and the bevel gear two. When it is necessary to adjust the spacing between the lower coating and dipping roller and the upper coating and dipping roller, the rotating block is first rotated, and the rotating block can drive the rotating rod and the two bevel gears to rotate, thereby driving the two bevel gears two and the two threaded rods to rotate. By utilizing the threaded cooperation between the threaded rod and the adjusting plate, the rotation of the two threaded rods can drive the two adjusting plates and the two connecting blocks to move inside the adjusting groove at the same time, thereby driving the upper coating and dipping roller to move, so as to facilitate the adjustment of the spacing between the lower coating and dipping roller and the upper coating and dipping roller, and to adjust the pressure applied by the lower coating and dipping roller and the upper coating and dipping roller to the alkali-free glass fiber.

[0016] 3. The present invention coordinates the upper coating and dipping roller, the impregnating agent storage bucket, the square tube, the connecting frame, the spray head, the booster pump, the liquid inlet pipe, the filter cartridge and the liquid outlet pipe. The booster pump can pressurize the impregnating agent stored in the impregnating agent storage bucket and inject it into the interior of the square tube through the liquid outlet pipe. The impregnating agent in the square tube can be sprayed out through the spray head under the action of pressure, and the impregnating agent can be evenly sprayed on the outer surface of the upper coating and dipping roller, so that the alkali-free glass fiber can be evenly coated. The filter cartridge can be used to filter impurities in the impregnating agent to prevent the impurities from damaging the booster pump.

[0017] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the infiltrant storage bucket in the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the immersion component in the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the support frame in the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the structure enlargement in the middle; Figure 6 It is a schematic diagram of the internal structure of the protection box in the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the wetting agent spraying assembly in the present invention; Figure 8 The present invention is a schematic flow chart of a method for uniformly coating an alkali-free glass fiber impregnation agent.

[0020] In the figure: 1. load-bearing plate; 2. supporting leg; 3. unloading trough; 4. lower coating dip roller; 5. supporting frame; 6. adjusting trough; 7. connecting block; 8. upper coating dip roller; 9. adjusting assembly; 901. threaded rod; 902. adjusting plate; 903. slide groove; 904. slide block; 905. protective box; 906. rotating rod; 907. rotating block; 908. bevel gear one; 909. bevel gear two; 10. impregnating agent storage hopper; 11. impregnating agent spraying assembly; 111. square tube; 112. connecting frame; 113. spray head; 114. booster pump; 115. liquid inlet pipe; 116. filter cartridge; 117. liquid outlet pipe; 12. immersion assembly; 121. connecting plate; 122. flexible protective cover; 123. immersion sponge; 124. spring; 13. guide assembly; 131. supporting plate; 132. guide roller. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] Embodiment 1 See also Figure 1-Figure 7The device is mainly composed of a carrying plate 1, a supporting leg 2, a feeding trough 3, a lower coating and dipping roller 4, a supporting frame 5, an adjusting trough 6, a connecting block 7, an upper coating and dipping roller 8, an adjusting component 9, a wetting agent storage hopper 10, a wetting agent spraying component 11, a dipping liquid component 12 and a guiding component 13.

[0023] The supporting plate 1 serves as the basic supporting component of the entire device, and a group of supporting legs 2 are evenly installed on its bottom surface to provide stable support for the device and ensure that the device will not shake during the coating and dipping process. A feeding trough 3 is provided on the upper surface of the supporting plate 1, and the inner wall of the feeding trough 3 is rotatably connected to the lower coating and dipping roller 4 through a bearing, so that the lower coating and dipping roller 4 can rotate flexibly. When the alkali-free glass fiber passes over the lower coating and dipping roller 4, the lower coating and dipping roller 4 will rotate accordingly under the action of friction, thereby playing the role of preliminary coating and conveying the glass fiber.

[0024] A support frame 5 is also installed on the upper surface of the supporting plate 1. The support frame 5 is a frame structure, and two adjustment grooves 6 are symmetrically opened on its outer surface. The adjustment grooves 6 are long strips with smooth inner walls. Two connecting blocks 7 are slidingly connected to the two adjustment grooves 6 respectively. The connecting blocks 7 can move up and down in the adjustment grooves 6. An upper coating and dipping roller 8 is rotatably connected between the two connecting blocks 7 through a rotating shaft. The upper coating and dipping roller 8 can rotate freely under the support of the connecting blocks 7.

[0025] The adjustment component 9 arranged outside the upper coating and dipping roller 8 is a key part for realizing the adjustment of the spacing between the coating and dipping rollers. The adjustment component 9 includes two threaded rods 901. The two ends of the threaded rods 901 are rotatably connected to the inner walls of the two adjustment grooves 6 through bearings respectively. The outer surfaces of the threaded rods 901 are threadedly connected with adjustment plates 902. The two adjustment plates 902 are respectively fixedly connected to the two connecting blocks 7. When the threaded rods 901 rotate, due to the action of the threads, the adjustment plates 902 will move along the axial direction of the threaded rods 901, thereby driving the connecting blocks 7 and the upper coating and dipping roller 8 to move up and down, thereby realizing the precise adjustment of the position of the upper coating and dipping roller 8.

[0026] In order to ensure the smooth movement of the adjustment plate 902, the adjustment component 9 is also provided with two groups of slide grooves 903. The two groups of slide grooves 903 are respectively opened on the inner walls of the two adjustment grooves 6 and are parallel to the threaded rod 901. The inner wall of each slide groove 903 is slidably connected with a slider 904, and the slider 904 is fixedly connected to the adjustment plate 902. In this way, during the movement of the adjustment plate 902, the slider 904 slides in the slide groove 903, playing a guiding and stabilizing role, thereby preventing the adjustment plate 902 from deviating or shaking during movement.

[0027] In addition, the adjustment component 9 also includes a protective box 905 installed on the upper surface of the support frame 5. The protective box 905 can not only protect the internal transmission components from the influence of external dust and other impurities, but also facilitate the operator to centrally control the adjustment operation. The inner wall of the protective box 905 is rotatably connected with a rotating rod 906. The front end of the rotating rod 906 extends out of the protective box 905 and is installed with a rotating block 907, which is convenient for the operator to hold and rotate. Two bevel gears 908 are installed on the outer surface of the rotating rod 906. The top ends of the two threaded rods 901 penetrate the bottom surface of the protective box 905 and extend to the interior of the protective box 905, and the threaded rod 901 and the penetration point of the protective box 905 are rotatably connected by a bearing to ensure that the threaded rod 901 rotates smoothly.

[0028] Bevel gear 2 909 is installed at the top of the two threaded rods 901, and bevel gear 2 909 is meshed with bevel gear 1 908. When the operator rotates the rotating block 907, the rotating block 907 drives the rotating rod 906 and bevel gear 1 908 to rotate, and bevel gear 1 908 drives bevel gear 2 909 to rotate through meshing, thereby making the two threaded rods 901 rotate synchronously, thereby realizing synchronous adjustment of the position of the upper coating roller 8.

[0029] The bottom surface of the carrier plate 1 is provided with a wetting agent storage hopper 10 for storing the wetting agent. The wetting agent spraying assembly 11 installed between the wetting agent storage hopper 10 and the support frame 5 can spray the wetting agent evenly on the outer surface of the upper coating roller 8 .

[0030] The wetting agent spraying assembly 11 includes a square tube 111 located on the right side of the support frame 5. The outer surface of the square tube 111 is fixedly connected to the support frame 5 via two connecting frames 112, which plays a role in supporting and positioning the square tube 111. The outer surface of the square tube 111 is fixedly connected to a group of spray heads 113. The position and angle of the spray heads 113 are adapted to the upper coating and dipping roller 8, which can ensure that the sprayed wetting agent is evenly covered on the surface of the upper coating and dipping roller 8.

[0031] The infiltrant spraying assembly 11 further includes two booster pumps 114 fixedly embedded in the outer surface of the infiltrant storage bucket 10 . The input ends of the two booster pumps 114 are both connected to a liquid inlet pipe 115 , which penetrates into the infiltrant storage bucket 10 to absorb the infiltrant.

[0032] A filter cartridge 116 is installed at one end of the two liquid inlet pipes 115 that are close to each other. Multiple layers of filter media are arranged in the filter cartridge 116, which can effectively filter impurities in the wetting agent and prevent impurities from entering the booster pump 114 and the spraying system to avoid damage to the equipment. The output ends of the two booster pumps 114 are connected to a liquid outlet pipe 117. The top of the liquid outlet pipe 117 is connected to the interior of the square tube 111. When the booster pump 114 is started, the wetting agent in the wetting agent storage bucket 10 is sucked in through the liquid inlet pipe 115, filtered by the filter cartridge 116, and then injected into the square tube 111 through the liquid outlet pipe 117. The wetting agent in the square tube 111 is evenly sprayed on the outer surface of the upper coating roller 8 through the spray head 113 under pressure.

[0033] An immersion component 12 is installed inside the impregnant storage bucket 10, and the immersion component 12 includes a connecting plate 121 located inside the impregnant storage bucket 10, and a flexible protective cover 122 is installed on the bottom surface of the connecting plate 121. The bottom end of the flexible protective cover 122 is sealed and connected to the inner bottom wall of the impregnant storage bucket 10 to prevent leakage of the impregnant. An immersion sponge 123 is installed on the upper surface of the connecting plate 121. The immersion sponge 123 has good water absorption, and its top end is in contact with the lower coating and dipping roller 4.

[0034] A group of springs 124 are installed between the bottom surface of the connecting plate 121 and the inner bottom wall of the impregnant storage bucket 10. The springs 124 are located inside the flexible protective cover 122. Under the elastic force of the springs 124, the connecting plate 121 is pushed upward, so that the immersion sponge 123 always keeps in close contact with the lower coating and dipping roller 4, so that the lower coating and dipping roller 4 can continuously absorb the impregnant in the impregnant storage bucket 10, ensuring that the surface of the lower coating and dipping roller 4 is always attached with impregnant, providing sufficient impregnant for the coating of the glass fiber.

[0035] Two guide assemblies 13 are installed on the upper surface of the carrier plate 1. The guide assemblies 13 include two support plates 131 installed on the upper surface of the carrier plate 1. A guide roller 132 is rotatably connected between the two support plates 131 via a rotating shaft. The guide roller 132 can support and guide the glass fiber before it enters the coating area, ensuring that the glass fiber accurately passes between the lower coating roller 4 and the upper coating roller 8, avoiding the glass fiber from being offset or entangled during the coating process, and ensuring the uniformity and stability of the coating.

[0036] Embodiment 2 See also Figure 8 This embodiment is based on the above-mentioned alkali-free glass fiber impregnation agent uniform coating device and describes the use process.

[0037] Before using the coating device, first conduct a comprehensive equipment inspection, open the inspection cover of the impregnant storage bucket 10, and observe whether the amount of impregnant is sufficient. Generally, it is more appropriate to keep the impregnant liquid level in the impregnant storage bucket 10 at about 2 / 3 of its volume. At the same time, check the state of the impregnant to see if there is precipitation, stratification or deterioration. If it is found that the impregnant does not meet the requirements, it needs to be replaced or processed in time.

[0038] Next, check the connection of each component, manually shake the supporting leg 2 to check whether it is firmly connected to the supporting plate 1, ensure that the device will not shake or tip over during operation, check the rotating parts of the lower coating roller 4, upper coating roller 8 and guide roller 132 one by one, such as whether the bearings are loose and whether the rotation is smooth. If the rotation is found to be stiff, add an appropriate amount of lubricating oil for lubrication; if any parts are damaged, replace them in time.

[0039] Also check the connections of the various components in the adjustment assembly 9, such as the connection between the threaded rod 901 and the adjustment groove 6, and the adjustment plate 902, to ensure that the threaded connection is tight and there is no slippage. Check whether the connections of the various pipes in the wetting agent spraying assembly 11 are well sealed to prevent leakage. Pay special attention to the sealing of the liquid inlet pipe 115 and the booster pump 114, the liquid outlet pipe 117 and the square tube 111, and each connection.

[0040] According to the specifications of the alkali-free glass fiber to be coated, the spacing between the coating rollers is adjusted. Assuming that the glass fiber to be coated is thicker, it is necessary to increase the spacing between the lower coating roller 4 and the upper coating roller 8. The operator holds the rotating block 907 and slowly rotates it clockwise. The rotating block 907 drives the rotating rod 906 to rotate synchronously, and the two bevel gears 908 on the outer surface of the rotating rod 906 rotate accordingly. Since the bevel gear 908 and the bevel gear 2 909 are meshed with each other, the bevel gear 2 909 drives the two threaded rods 901 to rotate synchronously clockwise.

[0041] The threaded rod 901 is connected to the adjustment plate 902 by threads. When the threaded rod 901 rotates, the adjustment plate 902 moves upward along the threaded rod 901, and the adjustment plate 902 drives the connecting block 7 to slide upward in the adjustment groove 6, thereby moving the upper coating and dipping roller 8 upward, increasing the distance between the lower coating and dipping roller 4 and the upper coating and dipping roller 8. When the distance reaches a value suitable for the specification of glass fiber, stop rotating the rotating block 907. If the glass fiber to be coated is thinner, rotate the rotating block 907 counterclockwise, and according to the above-mentioned reverse transmission process, reduce the distance between the lower coating and dipping roller 4 and the upper coating and dipping roller 8.

[0042] After the spacing adjustment is completed, the booster pump 114 is started. The booster pump 114 is powered on and starts working. Its strong suction force sucks the infiltrant in the infiltrant storage bucket 10 through the liquid inlet pipe 115. When the infiltrant enters the liquid inlet pipe 115, it is first filtered by the filter cartridge 116, which can effectively filter out impurities in the infiltrant, such as metal debris, dust particles, etc., to ensure that the infiltrant entering the subsequent system is pure and free of impurities.

[0043] The filtered wetting agent enters the booster pump 114, which boosts the wetting agent so that it has sufficient pressure to be injected into the square tube 111 through the liquid outlet pipe 117. Under the action of pressure, the wetting agent in the square tube 111 is evenly sprayed out from a group of spray heads 113 and sprayed on the outer surface of the upper coating and dipping roller 8. At the same time, the immersion component 12 is also playing a role. Under the elastic force of the spring 124, the connecting plate 121 is pushed upward, and the immersion sponge 123 fits tightly to the surface of the lower coating and dipping roller 4, absorbing the wetting agent in the wetting agent storage bucket 10, so that the surface of the lower coating and dipping roller 4 is also attached with the wetting agent, preparing for the subsequent coating and dipping operation.

[0044] The alkali-free glass fiber bundle to be coated is passed between the guide rollers 132 of the two guide assemblies 13. Under the guidance of the guide rollers 132, the glass fibers enter the coating area in a horizontal and stable state. Then, the glass fibers are passed between the lower coating roller 4 and the upper coating roller 8. When the glass fibers start to move, the friction between the glass fibers and the lower coating roller 4 and the upper coating roller 8 causes the lower coating roller 4 and the upper coating roller 8 to rotate accordingly.

[0045] The wetting agent attached to the surface of the lower coating roller 4 and the upper coating roller 8 is evenly coated on the surface of the glass fiber during the rotation process, thereby realizing the wetting operation of the alkali-free glass fiber. During the coating process, ensure that the moving speed of the glass fiber remains stable to avoid affecting the coating effect due to too fast or too slow speed. If uneven coating is found, the moving speed of the glass fiber can be appropriately adjusted or the spacing of the coating rollers can be checked again to see if it is appropriate.

[0046] After the coating is completed, the glass fiber is sent out from the discharge end of the equipment and enters the subsequent processing link. After the glass fiber is coated, the booster pump 114 is turned off in time to stop the supply of the impregnant. If the equipment is not used for a long time, the equipment needs to be cleaned and maintained. Use clean water to rinse the inside of the impregnant storage bucket 10 to remove the residual impregnant and impurities, remove the filter cartridge 116, clean it, wipe the square tube 111, the spray head 113 and the residual impregnant on the surface of each roller with a wet cloth to prevent the impregnant from clogging the spray head 113 or affecting the rotation performance of the roller after drying. At the same time, check the wear of each component. If necessary, replace the severely worn components in time to prepare for the next coating work.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A device for uniformly coating alkali-free glass fiber sizing agent, characterized in that: The device comprises a supporting plate (1), a group of supporting legs (2) are installed on the bottom surface of the supporting plate (1), a lower material trough (3) is provided on the upper surface of the supporting plate (1), a lower coating and dipping roller (4) is rotatably connected to the inner wall of the lower material trough (3), a supporting frame (5) is installed on the upper surface of the supporting plate (1), two adjusting grooves (6) are provided on the outer surface of the supporting frame (5), the inner walls of the two adjusting grooves (6) are both slidably connected to connecting blocks (7), an upper coating and dipping roller (8) is rotatably connected between the two connecting blocks (7), and the outer surface of the upper coating and dipping roller (8) is provided with a plurality of adjusting grooves (6). An adjustment component (9) is provided, a wetting agent storage hopper (10) is installed on the bottom surface of the carrier plate (1), a wetting agent spraying component (11) is installed between the wetting agent storage hopper (10) and the support frame (5), an immersion component (12) is installed inside the wetting agent storage hopper (10), and two guide components (13) are installed on the upper surface of the carrier plate (1), and the guide components (13) include two support plates (131) installed on the upper surface of the carrier plate (1), and a guide roller (132) is rotatably connected between the two support plates (131).

2. The device for uniformly applying alkali-free glass fiber sizing agent according to claim 1, characterized in that: The adjustment assembly (9) comprises two threaded rods (901), the two threaded rods (901) being rotatably connected to the inner walls of the two adjustment slots (6) respectively, the outer surfaces of the two threaded rods (901) being threadedly connected to adjustment plates (902), and the two adjustment plates (902) being connected to the two connection blocks (7) respectively.

3. The device for uniformly applying alkali-free glass fiber sizing agent according to claim 2, characterized in that: The adjustment component (9) further comprises two groups of slide grooves (903), wherein the two groups of slide grooves (903) are respectively arranged on the inner walls of the two adjustment grooves (6), and the inner wall of each slide groove (903) is slidably connected to a slider (904), and the slider (904) is connected to the adjustment plate (902).

4. The device for uniformly applying alkali-free glass fiber sizing agent according to claim 2, characterized in that: The adjustment assembly (9) further comprises a protection box (905) mounted on the upper surface of the support frame (5); the inner wall of the protection box (905) is rotatably connected to a rotating rod (906); a rotating block (907) is mounted at the front end of the rotating rod (906).

5. The device for uniformly applying alkali-free glass fiber sizing agent according to claim 4, characterized in that: Two bevel gears 1 (908) are installed on the outer surface of the rotating rod (906), the top ends of the two threaded rods (901) penetrate the bottom surface of the protective box (905) and extend into the interior of the protective box (905), and the outer surface of the threaded rod (901) and the penetration point of the protective box (905) are rotatably connected, and the top ends of the two threaded rods (901) are installed with bevel gears 2 (909), and bevel gears 2 (909) are meshed with bevel gears 1 (908).

6. The device for uniformly applying alkali-free glass fiber sizing agent according to claim 1, characterized in that: The impregnating agent spraying assembly (11) comprises a square tube (111) located on the right side of the support frame (5), two connecting frames (112) are installed on the outer surface of the square tube (111), and the connecting frames (112) are connected to the support frame (5), and a group of spray heads (113) are fixedly connected to the outer surface of the square tube (111), and the spray heads (113) are adapted to the upper coating dipping roller (8).

7. The device for uniformly applying alkali-free glass fiber sizing agent according to claim 6, characterized in that: The infiltrant spraying assembly (11) further comprises two booster pumps (114) fixedly embedded in the outer surface of the infiltrant storage hopper (10), the input ends of the two booster pumps (114) are both connected to a liquid inlet pipe (115), the ends of the two liquid inlet pipes (115) close to each other are both equipped with filter cartridges (116), the output ends of the two booster pumps (114) are both connected to a liquid outlet pipe (117), and the top ends of the liquid outlet pipes (117) are connected to the interior of the square tube (111).

8. The device for uniformly applying alkali-free glass fiber sizing agent according to claim 1, characterized in that: The immersion component (12) includes a connecting plate (121) located inside the impregnating agent storage bucket (10), a flexible protective sleeve (122) is installed on the bottom surface of the connecting plate (121), and the bottom end of the flexible protective sleeve (122) is connected to the inner bottom wall of the impregnating agent storage bucket (10), an immersion sponge (123) is installed on the upper surface of the connecting plate (121), and the top end of the immersion sponge (123) is in contact with the lower coating immersion roller (4), and a group of springs (124) are installed between the bottom surface of the connecting plate (121) and the inner bottom wall of the impregnating agent storage bucket (10), and the springs (124) are located inside the flexible protective sleeve (122).

9. A method for uniformly applying an alkali-free glass fiber sizing agent, applicable to a device for uniformly applying an alkali-free glass fiber sizing agent according to claims 1-8, characterized in that: The method comprises the following steps: Check the amount of the impregnant in the impregnant storage hopper (10) to ensure that the impregnant is sufficient and not deteriorated. At the same time, check whether the connections of each component are firm to ensure that the equipment can operate normally. According to the specifications of the alkali-free glass fiber to be coated, the rotating block (907) is rotated to drive the two bevel gears (909) and the threaded rod (901) to rotate, and the threaded rod (901) drives the adjustment plate (902) and the connecting block (7) to move in the adjustment groove (6), so as to adjust the position of the upper coating roller (8) and determine the appropriate spacing between the lower coating roller (4) and the upper coating roller (8), so that the two can apply appropriate pressure to the glass fiber; The booster pump (114) is started, and the booster pump (114) pressurizes the wetting agent in the wetting agent storage bucket (10) and injects the wetting agent into the square tube (111). The wetting agent in the square tube (111) is evenly sprayed onto the outer surface of the upper coating dip roller (8) through the spray head (113). At the same time, the dipping sponge (123) is in close contact with the lower coating dip roller (4) under the action of the spring (124), and absorbs the wetting agent in the wetting agent storage bucket (10), so that the wetting agent is also attached to the surface of the lower coating dip roller (4); The alkali-free glass fiber to be coated passes between the lower coating roller (4) and the upper coating roller (8), and the glass fiber drives the lower coating roller (4) and the upper coating roller (8) to rotate during the movement, so that the impregnating agent on the surface of the lower coating roller (4) and the upper coating roller (8) is evenly coated on the glass fiber, thereby completing the impregnating agent coating operation; After the coating is completed, the glass fibers are sent out from the right end of the device for subsequent processing. After a batch of glass fibers is coated, the booster pump (114) is turned off. If the device is not used for a long time, the residual sizing agent in the sizing agent storage hopper (10), the spraying assembly and the surfaces of the rollers needs to be cleaned.

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