Glass fiber ultrathin coated board paper preparation device and preparation method

Abstract

The invention discloses a preparation device and a preparation method of glass fiber ultrathin plate coating paper, and belongs to the technical field of battery plate coating paper preparation. The glass fiber ultrathin coated board paper preparation device comprises a rack, and a mesh belt for supporting glass fiber slurry is arranged on the rack; one end of a frame body of the rack is provided with a pulp distributing mechanism for distributing pulp, the middle part of the frame body is provided with a dehydrating mechanism for dehydrating and forming the pulp, and the other end of the frame body is provided with a net separating mechanism for separating the formed glass fiber ultrathin board coating paper from a net belt; the pulp distributing mechanism comprises a pulp flowing box, a stirring structure for stirring pulp is arranged in the pulp flowing box, and a spreading structure for spreading the pulp is arranged at the downstream of the pulp flowing box. By adopting the preparation device and the preparation method of the glass fiber ultrathin coated board paper, on the premise that the thickness of the obtained glass fiber ultrathin coated board paper is less than 0.2 mm, the problems that the thickness and the texture of the existing glass fiber ultrathin coated board paper are not uniform and the existing glass fiber ultrathin coated board paper is not easy to separate from a net can be solved.

Description

Technical Field

[0001] This invention relates to the field of battery coated paper preparation technology, and in particular to a glass fiber ultrathin coated paper preparation apparatus and preparation method. Background Technology

[0002] In battery systems, coated paper is a functional auxiliary paper specifically used in the production of lead-acid battery plates. During the coating of lead paste, curing, drying, and subsequent transport of the plates, coated paper separates adjacent plates, preventing the active materials (such as lead paste) on the plate surfaces from adhering to each other. It also prevents the active materials from falling off due to collisions and friction, ensuring the integrity of the plates. In the coating process, coated paper acts as a carrier or support layer, helping the lead paste adhere evenly to the plate grid, limiting the flow range of the lead paste, ensuring consistent plate thickness, size, and surface flatness, and improving the yield rate of plate production. Traditional lignin-based coated paper, due to its poor acid resistance and tendency to produce harmful impurities, is unable to meet the current development needs of lead-acid batteries. Ultra-thin glass fiber coated paper, with its advantages of strong acid resistance, high chemical stability, high porosity, and minimal impact on plate stacking density, is expected to replace traditional lignin-based coated paper and be widely used in lead-acid battery systems.

[0003] Currently, the industry mostly uses wet forming processes to prepare glass fiber coated paper, the core of which includes pulping, dewatering, forming, wire removal, and post-treatment. However, existing preparation equipment and processes face many technical bottlenecks in the production of ultra-thin coated paper. Insufficient uniformity of pulp distribution: Existing headboxes mostly pour glass fiber pulp directly onto the conveyor belt. During the placement process, the glass fiber pulp is prone to local sedimentation and uneven dispersion, making it difficult to form a wet blank of uniform thickness on the conveyor belt. This results in large deviations in the thickness of the finished coated paper, which cannot meet the precision requirements of ultra-thin specifications.

[0004] Difficulty in separating ultra-thin coated paper from the mesh belt: The wet blank strength of ultra-thin coated paper made of glass fiber is low, making it difficult to separate the ultra-thin coated paper from the mesh belt, which can easily cause the coated paper to tear or break, and significantly reduce the finished product qualification rate.

[0005] Therefore, there is an urgent need to develop a preparation method to solve the aforementioned problems in the production process of ultra-thin glass fiber coated paper. Summary of the Invention

[0006] The purpose of this invention is to provide a glass fiber ultrathin coated paper preparation device and preparation method, which solves the problems of uneven thickness and texture and difficulty in detachment of existing glass fiber ultrathin coated paper, under the premise that the thickness of the obtained glass fiber ultrathin coated paper is less than 0.2 mm.

[0007] To achieve the above objectives, the present invention provides a glass fiber ultrathin coated paper preparation apparatus, comprising a frame on which a mesh belt supporting glass fiber slurry is mounted; a slurry dispensing mechanism is provided at one end of the frame, a dewatering mechanism for dewatering and shaping the slurry is provided in the middle of the frame, and a wire removal mechanism for separating the shaped glass fiber ultrathin coated paper from the mesh belt is provided at the other end of the frame; the slurry dispensing mechanism includes a headbox, a stirring structure for agitating the slurry is provided inside the headbox, and a spreading structure for spreading the slurry is provided downstream of the headbox.

[0008] Preferably, the stirring structure is located at the bottom of the headbox. The stirring structure includes a rotating shaft that is rotatably and sealed to the headbox. Several stirring rods for stirring the slurry are evenly arranged on the rotating shaft. A drive wheel is provided on the rotating shaft. A support plate for supporting and fixing the headbox is provided on the frame. The rotating shaft is rotatably connected to the support plate. A second motor is provided on the frame. The sprocket on the second motor is connected to the drive wheel through a drive chain, which drives the rotating shaft to rotate. The rotating shaft drives the stirring rods to rotate, thereby stirring the slurry and improving the uniformity of the slurry texture.

[0009] Preferably, the spreading structure includes a spreading roller, both ends of which are rotatably connected to a mounting base. The mounting base is connected to a fixed pipe via a telescopic assembly. One end of the fixed pipe is provided with a square pin. A limiting hole is provided on one side of the support plate for the pin to pass through. The pin slides only along the limiting hole. A connecting plate is provided at the end of the pin. The connecting plate is connected to a rotating shaft via a transmission assembly. The rotating shaft drives the connecting plate to reciprocate via the transmission assembly. The connecting plate drives the spreading roller to reciprocate on the mesh belt, thereby improving the uniformity of slurry dispersion on the mesh belt.

[0010] Preferably, the telescopic assembly includes an adjusting rod, one end of which is rotatably connected to the mounting base, and the other end of which is inserted into the fixed tube and threadedly connected to the fixed tube. Rotating the adjusting rod adjusts the height of the spreading roller.

[0011] Preferably, the transmission assembly includes a transmission plate, which is fixed on the rotating shaft. One end of the transmission plate is connected to the connecting plate via a transmission rod, and both ends of the transmission rod are hinged to the transmission plate and the connecting plate.

[0012] Preferably, the bottom of the headbox is provided with an adjustment structure for adjusting the size of the headbox outlet. The adjustment structure includes a first sealing plate, a second sealing plate, a third sealing plate, and a fourth sealing plate arranged sequentially and arranged in a circumferential array. The first sealing plate, the second sealing plate, the third sealing plate, and the fourth sealing plate are connected end to end and slidably connected to each other via inclined surfaces. The first sealing plate, the second sealing plate, the third sealing plate, and the fourth sealing plate form a central hole for headbox outlet. The bottom of the headbox is fixedly provided with guide grooves that guide the sliding of the first sealing plate, the second sealing plate, the third sealing plate, and the fourth sealing plate. The guide grooves correspond one-to-one with the first sealing plate, the second sealing plate, the third sealing plate, and the fourth sealing plate, and adjacent guide grooves are arranged perpendicularly. The first sealing plates of adjacent adjustment structures are connected by push rods, and the push rods are locked to the bottom of the headbox by set screws.

[0013] Preferably, the dewatering mechanism includes a squeezing roller, a support roller rotatably mounted on the frame to support the conveyor belt, the support roller being directly below the squeezing roller, a plurality of protrusions uniformly arranged on the outer surface of the squeezing roller to squeeze the glass fiber slurry, the two ends of the squeezing roller being rotatably mounted on lifting seats, the lifting seats being slidably mounted on the support seats, the support seats being fixed on the frame, and a hydraulic cylinder being mounted on the support seats to drive the lifting seats to rise and fall; a water tank for collecting water in the slurry is provided on the frame, the water tank being located below the headbox, spreading roller and squeezing roller; a forming roller for forming glass fiber ultrathin coated paper is provided downstream of the squeezing roller, and a drying box for drying the ultrathin coated paper is provided downstream of the forming roller.

[0014] Preferably, a negative pressure dehydration assembly is provided between the forming roller and the extrusion roller. The negative pressure dehydration assembly includes an air chamber, which is fixed on the frame. The air chamber is provided with coated paper that divides the air chamber into several negative pressure chambers. Several air holes are evenly arranged inside the negative pressure chambers. The air holes are connected to an air pump through pipelines. The air pump provides a negative pressure environment for the negative pressure chambers.

[0015] Preferably, the screen removal mechanism includes an adsorption roller and a removal roller arranged opposite to each other. The adsorption roller is located above the coated paper, and the removal roller is located below the conveyor belt. Both the adsorption roller and the removal roller are rotatably connected to the frame. The adsorption roller is evenly provided with a number of negative pressure holes, which communicate with the internal cavity of the adsorption roller. The end of the adsorption roller is connected to an air pump through a rotary joint. The removal roller is evenly provided with a number of air holes, which communicate with the internal cavity of the removal roller. One end of the removal roller is connected to a fan through a rotary joint, and the fan provides positive pressure air to the removal roller. The tail end of the frame is provided with a guide roller to guide the separated coated paper. The frame is provided with an active roller and a driven roller to support the conveyor belt and drive the conveyor belt to rotate.

[0016] The preparation method based on the above-mentioned glass fiber ultrathin coated paper preparation apparatus includes the following steps: S1. Pour glass fiber slurry into the headbox, push the push rod, and the push rod drives the first sealing plate to slide along the guide groove. The first sealing plate pushes the second or fourth sealing plate to slide through the inclined plane. The second sealing plate pushes the fourth sealing plate to slide through the third sealing plate, or the fourth sealing plate pushes the second sealing plate to slide through the third sealing plate, thus adjusting the size of the slurry outlet. The first motor drives the drive roller to rotate, and the drive roller drives the mesh belt to move through the driven roller. The slurry in the headbox flows onto the mesh belt. S2. Rotate the adjusting rod to adjust the height of the spreading roller; the second motor drives the rotating shaft to rotate through the chain, sprocket and transmission wheel. The rotating shaft stirs the slurry in the headbox through the stirring rod. The rotating shaft drives the connecting plate to move back and forth through the transmission plate and transmission rod. The connecting plate drives the fixed tube to move through the pin. The fixed tube drives the spreading roller to move back and forth through the adjusting rod, so as to spread the glass fiber slurry on the mesh belt evenly. S3. The extrusion roller and support roller extrude the glass fiber slurry on the mesh belt to squeeze out excess water. The water flows into the water tank for collection. The extruded glass fiber slurry is then subjected to negative pressure adsorption in the negative pressure chamber. The glass fiber slurry is further dehydrated by negative pressure. After being formed by the forming roller, coated paper blank is obtained and then dried in the drying oven. S4. After drying, the coated paper blank enters the wire mesh removal mechanism. The fan blows air into the wire mesh belt through the air holes to provide an upward pushing force for the coated paper, causing the coated paper to separate from the wire mesh belt. The air pump provides negative pressure adsorption to the coated paper through the negative pressure holes, so that the coated paper separates from the wire mesh belt. The separated coated paper is discharged through the guide roller for post-processing.

[0017] The advantages and positive effects of the glass fiber ultrathin coated paper preparation apparatus and method described in this invention are as follows: By setting a spreading roller downstream of the headbox, this invention facilitates obtaining coated paper with uniform thickness, thus improving the uniformity of the thickness and texture of the ultrathin coated paper. The presence of a stirring rod inside the headbox ensures smooth and uniform flow of the slurry, further contributing to the uniform thickness of the ultrathin coated paper. Negative pressure dewatering improves the adequacy of the dewatering process, promoting drying and increasing production efficiency. The process of first drying the coated paper and then using a positive pressure air-driven desiccant roller combined with a negative pressure adsorption roller at the tail end of the frame promotes separation of the ultrathin coated paper from the conveyor belt, solving the problem of difficult separation of the ultrathin coated paper.

[0018] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is a top view of the structure according to an embodiment of the present invention; Figure 3This is a front view structural diagram of an embodiment of the present invention; Figure 4 This is a schematic diagram of the headbox structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the bottom structure of the headbox according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the adjustment structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the pulping mechanism according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the extrusion roller according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the negative pressure dehydration component structure according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the mesh removal mechanism according to an embodiment of the present invention.

[0020] Figure Labels 1. Frame; 11. Frame body; 12. Mesh belt; 13. Driven roller; 14. Driven roller; 15. First motor; 16. Forming roller; 17. Water tank; 18. Guide roller; 19. Support roller; 2. Slurry dispensing mechanism; 21. Headbox; 22. Rotating shaft; 23. Stirring rod; 24. Drive wheel; 25. Second motor; 26. First sealing plate; 27. Second sealing plate; 28. Third sealing plate; 29. ​​Fourth sealing plate; 210. Push rod; 211. Guide groove; 212. Transmission plate; 213. Transmission rod; 214. Spreading roller; 215. Mounting base; 216. Adjusting rod; 217. Fixing pipe; 218. Limiting hole; 219. Connecting plate; 220. Support plate; 221. Slurry outlet; 3. Dehydration mechanism; 31. Support base; 32. Extrusion roller; 33. Protrusion; 34. Lifting base; 35. Hydraulic cylinder; 36. Air chamber; 37. Coated paper; 38. Negative pressure chamber; 39. Air hole; 310. Roller; 311. Drying oven; 4. Screen removal mechanism; 41. Adsorption roller; 42. Negative pressure hole; 43. Screen removal roller; 44. Air hole. Detailed Implementation

[0021] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] In this application, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. In case of any inconsistency, the meaning set forth in this specification or derived from the content described herein shall prevail. Furthermore, the terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit the scope of this application.

[0023] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, a glass fiber ultrathin coated paper preparation apparatus includes a frame 1, on which a mesh belt 12 is mounted to support glass fiber slurry. A drive roller 14 and a driven roller 13 are rotatably mounted on the frame 11. A first motor 15 is mounted on the frame 11 to drive the drive roller 14 to rotate. The mesh belt 12 passes around the drive roller 14 and the driven roller 13, which support the mesh belt 12. The drive roller 14 provides power for the rotation of the mesh belt 12. Figure 1 , Figure 2 and Figure 3 Only one end of the mesh belt 12 is shown. In reality, the mesh belt 12 is a ring structure that passes over the tension roller set at the bottom of the frame 11 to achieve the cyclic rotation of the mesh belt 12.

[0025] like Figure 4As shown, a slurry spreading mechanism 2 is provided at one end of the frame 11 of the machine frame 1 for spreading the glass fiber slurry evenly onto the mesh belt 12 to form glass fiber coated paper 37. The slurry spreading mechanism 2 includes a headbox 21, which is positioned directly above the mesh belt 12. A support plate 220 is fixedly mounted on the frame 11, and the headbox 21 is fixedly mounted on the support plate 220. The headbox 21 has an agitation structure for stirring the slurry inside. The agitation structure is located at the lower part of the headbox 21 and includes a rotating shaft 22, which is rotatably connected to the headbox 21 via a bearing seal. The rotating shaft 22 is rotatably connected to the support plate 220 via a bearing. Several agitator rods 23 are evenly arranged on the rotating shaft 22 to agitate the slurry, ensuring smooth flow of the slurry and improving the uniformity of glass fiber dispersion. A drive wheel 24 is fixedly mounted on the rotating shaft 22. A second motor 25 is fixedly installed on the frame 11. A sprocket fixedly installed on the output shaft of the second motor 25 is connected to the transmission wheel 24 through a transmission chain, which drives the rotating shaft 22 to rotate.

[0026] like Figure 7 As shown, a spreading structure for distributing the slurry is provided downstream of the headbox 21. The spreading structure includes a spreading roller 214, whose two ends are rotatably connected to a mounting base 215 via bearings. The mounting base 215 is connected to a fixed tube 217 via a telescopic assembly, which is used to adjust the height of the spreading roller 214. A square pin is fixedly mounted at one end of the fixed tube 217. A limiting hole 218 is provided on one side of the support plate 220, allowing the pin to pass through. The width of the limiting hole 218 is slightly larger than the height of the pin, allowing the pin to slide within the limiting hole 218, but only slide, not rotate. To improve the stability of the spreading roller 214, the two fixed tubes 217 can be fixedly connected by a fixing rod. A connecting plate 219 is fixedly mounted at the end of the pin, and the connecting plate 219 is connected to a rotating shaft 22 via a transmission assembly.

[0027] The telescopic assembly includes an adjusting rod 216, one end of which is rotatably connected to the mounting base 215 via a bearing. The other end of the adjusting rod 216 is inserted into the fixing tube 217 and threadedly connected to it. Rotating the adjusting rod 216 adjusts the height of the spreading roller 214, facilitating height adjustment of the spreading roller 214.

[0028] The transmission assembly includes a transmission plate 212, which is fixed to a rotating shaft 22. One end of the transmission plate 212 is connected to a connecting plate 219 via a transmission rod 213, and both ends of the transmission rod 213 are hinged to both the transmission plate 212 and the connecting plate 219. The rotating shaft 22 drives the spreading roller 214 to reciprocate above the mesh belt 12 through the transmission assembly, thereby improving the uniformity of the glass fiber slurry spreading on the mesh belt 12.

[0029] like Figure 5 , Figure 6 As shown, the bottom of the headbox 21 is evenly provided with several pulp outlets 221. The bottom of the headbox 21 is provided with an adjustment structure for adjusting the size of the pulp outlets 221. This adjustment structure allows for adaptation to different conveyor belt speeds 12 and different coated paper 37 thicknesses. The adjustment structure includes a first sealing plate 26, a second sealing plate 27, a third sealing plate 28, and a fourth sealing plate 29 arranged sequentially and in a circumferential array. The first sealing plate 26, second sealing plate 27, third sealing plate 28, and fourth sealing plate 29 have identical quadrilateral structures. Two opposite interior angles of the quadrilateral are 90°, and the other opposite interior angles are 45° and 135°. The first sealing plate 26, second sealing plate 27, third sealing plate 28, and fourth sealing plate 29 are connected end-to-end and slidably connected to each other via inclined surfaces. The first sealing plate 26, the second sealing plate 27, the third sealing plate 28, and the fourth sealing plate 29 form a central hole for the headstock outlet. Sliding the first sealing plate 26, the second sealing plate 27, the third sealing plate 28, and the fourth sealing plate 29 allows adjustment of the size of the central hole. A guide groove 211 is fixedly provided at the bottom of the headbox 21, guiding the sliding of the first sealing plate 26, the second sealing plate 27, the third sealing plate 28, and the fourth sealing plate 29. Each guide groove 211 corresponds to one of the first sealing plate 26, the second sealing plate 27, the third sealing plate 28, and the fourth sealing plate 29, and adjacent guide grooves 211 are perpendicular to each other. The first sealing plates 26 of adjacent adjustment structures are fixedly connected by push rods 210, which are locked to the bottom of the headbox 21 by set screws. The push rod 210 can drive the adjusting structure to slide synchronously, thereby achieving synchronous adjustment of the size of the slurry outlet 221. The push rod 210 is locked onto the headbox 21 by the set screw, thereby fixing the size of the slurry outlet 221.

[0030] like Figure 8As shown, a dewatering mechanism 3 for dewatering and shaping the slurry is provided in the middle of the frame 11. The dewatering mechanism 3 is used to remove excess water from the glass fiber slurry. The dewatering mechanism 3 includes a pressing roller 32, and a support roller 19 for supporting the mesh belt 12 is rotatably mounted on the frame 11 via bearings. The support roller 19 is located directly below the pressing roller 32. The spread glass fiber slurry is squeezed by the support roller 19 and the pressing roller 32 to squeeze out excess water. Several protrusions 33 are evenly arranged on the outer surface of the pressing roller 32 to squeeze the glass fiber slurry, thereby improving the squeezing effect. The two ends of the pressing roller 32 are rotatably mounted on the lifting seat 34 via bearings. The lifting seat 34 is slidably mounted on the support seat 31, and the support seat 31 is fixed to the frame 11. A hydraulic cylinder 35 is provided on the support seat 31 to drive the lifting seat 34 to rise and fall. The hydraulic cylinder 35 is used to adjust the height of the pressing roller 32. A water tank 17 for collecting water in the slurry is fixedly installed on the frame 11. The water tank 17 is located below the headbox 21, the spreading roller 214 and the extrusion roller 32.

[0031] Downstream of the extrusion roller 32 is a forming roller 16 for forming the ultra-thin coated glass fiber paper 37. The forming rollers 16 are a group, and the forming rollers 16 located above the conveyor belt 12 can be height-adjusted via hydraulic components. Downstream of the forming rollers 16 is a drying chamber 311 for drying the ultra-thin coated glass fiber paper 37. The drying chamber 311 is a hot air drying chamber. The actual length of the drying chamber 311 can be set as needed; the attached diagram is for illustrative purposes only.

[0032] like Figure 9 As shown, a negative pressure dehydration assembly is provided between the forming roller 16 and the extrusion roller 32. The negative pressure dehydration assembly includes an air chamber 36, which is fixed on the frame 11. Inside the air chamber 36, coated paper 37 is fixedly arranged, dividing the air chamber 36 into several negative pressure chambers 38. Several air holes 39 are evenly arranged inside the negative pressure chambers 38, and the air holes 39 are connected to an air pump through pipes. The air pump provides a negative pressure environment to the negative pressure chambers 38. The negative pressure environment inside the negative pressure chambers 38 facilitates further dehydration of residual moisture in the glass fiber slurry by the mesh belt 12, reducing the moisture content in the glass fiber slurry and facilitating the drying of the glass fiber. Rollers 310 are rotatably arranged at both ends of the air chamber 36 to reduce the friction between the air chamber 36 and the mesh belt 12, and the rollers 310 can support the mesh belt 12, improving the stability of the mesh belt 12.

[0033] like Figure 10As shown, the other end of the frame 11 is equipped with a screen removal mechanism 4 for separating the formed ultra-thin glass fiber coated paper 37 from the mesh belt 12. The screen removal mechanism 4 includes an adsorption roller 41 and a removal roller 43 arranged opposite each other. The adsorption roller 41 is located above the coated paper 37, and the removal roller 43 is located below the mesh belt 12. Both the adsorption roller 41 and the removal roller 43 are rotatably connected to the frame 11 via bearings. The adsorption roller 41 has several uniformly arranged negative pressure holes 42, which communicate with the internal cavity of the adsorption roller 41. The end of the adsorption roller 41 is connected to an air pump via a rotary joint. The air pump provides a negative pressure environment to the coated paper 37 through the negative pressure holes 42. The negative pressure exerts an upward suction force on the coated paper 37, promoting the separation of the coated paper 37 from the mesh belt 12. The air pressure provided by the adsorption roller 41 is 0.1-0.5 MPa.

[0034] The stripping roller 43 has several air holes 44 evenly distributed on it, and the air holes 44 are connected to the internal cavity of the stripping roller 43. One end of the stripping roller 43 is connected to a fan through a rotary joint. The fan provides positive pressure air to the stripping roller 43. The positive pressure air applies an upward blowing force to the coated paper 37 through the mesh belt 12, causing the coated paper 37 to separate from the mesh belt 12. The air pressure provided by the stripping roller 43 is 50mm-60mm water column, and the air volume is 1500-2500m3 / h. Since the mesh belt 12 is tensioned in the drive roller 14 and the driven roller 13, the positive pressure air has a relatively small impact on the mesh belt 12. At the tail end of the frame 11, a guide roller 18 is rotatably mounted via a bearing to guide the separated coated paper 37. The height of the guide roller 18 is higher than that of the adsorption roller 41. The frame 11 is rotatably mounted with a drive roller 14 and a driven roller 13 that support and drive the mesh belt 12 to rotate via bearings. The frame 11 is also equipped with a first motor 15 that drives the drive roller 14 to rotate.

[0035] The glass fiber coated paper 37 is de-wired by the adsorption roller 41 and the de-wire roller 43, which facilitates the smooth de-wired separation of the ultra-thin coated paper 37 from the mesh belt 12.

[0036] The preparation method based on the above-mentioned glass fiber ultrathin coated paper 37 preparation apparatus includes the following steps: S1. Pour glass fiber slurry into the headbox 21. Push the push rod 210, which drives the first sealing plate 26 to slide along the guide groove 211. The first sealing plate 26 pushes the second sealing plate 27 or the fourth sealing plate 29 to slide via the inclined surface. The second sealing plate 27 pushes the fourth sealing plate 29 to slide via the third sealing plate 28, or the fourth sealing plate 29 pushes the second sealing plate 27 to slide via the third sealing plate 28. Adjust the size of the slurry outlet 221. After the slurry outlet 221 is adjusted, tighten the push rod 210 by tightening the set screw. The first motor 15 drives the drive roller 14 to rotate. The drive roller 14 drives the mesh belt 12 to move via the driven roller 13. The slurry in the headbox 21 flows onto the mesh belt 12.

[0037] S2. Rotate the adjusting rod 216 to adjust the height of the spreading roller 214. The second motor 25 drives the rotating shaft 22 to rotate via a chain, sprocket, and transmission wheel 24. The rotating shaft 22 stirs the slurry in the headbox 21 via the stirring rod 23. The rotating shaft 22 drives the connecting plate 219 to move back and forth via the transmission plate 212 and the transmission rod 213. The connecting plate 219 drives the fixed tube 217 to move via the pin. The fixed tube 217 drives the spreading roller 214 to move back and forth via the adjusting rod 216, spreading the glass fiber slurry on the mesh belt 12 evenly.

[0038] S3, the extrusion roller 32 and the support roller 19 extrude the glass fiber slurry on the mesh belt 12 to squeeze out excess water, which flows into the water tank 17 for collection. The extruded glass fiber slurry is then subjected to negative pressure adsorption in the negative pressure chamber 38, where it is further dehydrated by negative pressure. After being formed by the forming roller 16, it becomes coated paper blank 37, which is then dried in the drying oven 311.

[0039] S4. The dried coated paper 37 blank enters the wire removal mechanism 4. The fan blows air onto the wire mesh belt 12 through the air hole 44, providing an upward pushing force to the coated paper 37, causing the coated paper 37 to separate from the wire mesh belt 12. The air pump provides negative pressure adsorption to the coated paper 37 through the negative pressure hole 42, causing the coated paper 37 to separate from the wire mesh belt 12. The separated coated paper 37 is discharged through the guide roller 18 for post-processing.

[0040] Therefore, by using the glass fiber ultrathin coated paper preparation device and method described in this invention, the problem of uneven thickness and texture of existing glass fiber ultrathin coated paper and its difficulty in detaching from the mesh can be solved, provided that the thickness of the obtained glass fiber ultrathin coated paper is less than 0.2 mm.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A glass fiber ultra-thin coated board paper preparation device, comprising a rack, a mesh belt for supporting glass fiber slurry is arranged on the rack; characterized in that: One end of the frame body of the frame is provided with a pulp distribution mechanism for distributing pulp, the middle part of the frame body is provided with a dewatering mechanism for dewatering and forming the pulp, and the other end of the frame body is provided with a mesh separation mechanism for separating the formed glass fiber ultra-thin coated paper from the mesh belt; the pulp distribution mechanism comprises a headbox, and an agitating structure for agitating the pulp is arranged in the headbox.

2. A device for preparing a glass fiber ultra-thin coated board paper according to claim 1, characterized in that: The agitating structure is arranged at the lower part of the headbox, and comprises a rotating shaft which is in sealing rotation connection with the headbox, a plurality of agitating rods for agitating the pulp are uniformly arranged on the rotating shaft, a transmission wheel is arranged on the rotating shaft, a support plate for supporting and fixing the headbox is arranged on the frame body, the rotating shaft is in rotation connection with the support plate, a second motor is arranged on the frame body, a sprocket on the second motor is connected with the transmission wheel through a transmission chain, the rotating shaft is driven to rotate, the agitating rods are driven to rotate through the rotating shaft, the pulp is agitated, and the uniformity of the pulp texture is improved.

3. A device for preparing a glass fiber ultra-thin coated board paper according to claim 2, characterized in that: The spreading structure comprises a spreading roller, the two ends of the spreading roller are in rotation connection with the mounting seat, the mounting seat is connected with the fixed pipe through the telescopic assembly, one end of the fixed pipe is provided with a square pin, one side of the support plate is provided with a limiting hole through which the pin passes, the pin only slides along the limiting hole, an end of the pin is provided with a connecting plate, the connecting plate is connected with the rotating shaft through a transmission assembly, the rotating shaft drives the connecting plate to move back and forth through the transmission assembly, the connecting plate drives the spreading roller to move back and forth on the mesh belt, and the uniformity of the pulp dispersion on the mesh belt is improved.

4. The device for preparing glass fiber super-thin coated board paper according to claim 3, characterized in that: The telescopic assembly comprises an adjusting rod, one end of the adjusting rod is in rotation connection with the mounting seat, the other end of the adjusting rod is inserted into the fixed pipe and is in screw connection with the fixed pipe, and the height of the spreading roller is adjusted by rotating the adjusting rod.

5. A device for preparing a glass fiber ultra-thin coated board paper according to claim 4, characterized in that: The transmission assembly comprises a transmission plate, the transmission plate is fixed on the rotating shaft, one end of the transmission plate is connected with the connecting plate through a transmission rod, and the two ends of the transmission rod are hinged with the transmission plate and the connecting plate.

6. A device for preparing a glass fiber ultra-thin coated board paper according to claim 5, characterized in that: The bottom of the headbox is provided with an adjusting structure for adjusting the size of the pulp outlet, the adjusting structure comprises first, second, third and fourth sealing plates which are sequentially arranged and circumferentially arrayed, the first, second, third and fourth sealing plates are connected in series and are in sliding connection with each other through inclined surfaces, the first, second, third and fourth sealing plates enclose a central hole of the pulp outlet, the bottom of the headbox is fixedly provided with guide grooves for guiding the sliding of the first, second, third and fourth sealing plates, the guide grooves correspond to the first, second, third and fourth sealing plates one by one, and adjacent guide grooves are vertically arranged; the first sealing plates of adjacent adjusting structures are connected through push rods, and the push rods are locked on the bottom of the headbox through jackscrews.

7. A device for preparing a glass fiber ultra-thin coated board paper according to claim 6, characterized in that: The dehydration mechanism comprises a squeezing roller, a support roller for supporting the mesh belt is rotationally arranged on the frame, the support roller is located directly below the squeezing roller, a plurality of protrusions for squeezing the glass fiber slurry are uniformly arranged on the outer surface of the squeezing roller, both ends of the squeezing roller are rotationally arranged on a lifting seat, the lifting seat is slidingly arranged on a supporting seat, the supporting seat is fixed on the frame, and a hydraulic cylinder for driving the lifting seat to lift is arranged on the supporting seat; a water tank for collecting water in the slurry is arranged on the frame, and the water tank is located below the headbox, the spreading roller and the squeezing roller; a forming roller for forming the glass fiber ultra-thin coated paper is arranged downstream of the squeezing roller, and a drying box for drying the ultra-thin coated paper is arranged downstream of the forming roller.

8. A device for preparing a glass fiber ultra-thin coated board paper according to claim 7, characterized in that: A negative pressure dehydration assembly is arranged between the forming roller and the squeezing roller, the negative pressure dehydration assembly comprises an air chamber, the air chamber is fixed on the frame, the air chamber is internally provided with coated paper for separating the air chamber into a plurality of negative pressure cavities, a plurality of air holes are uniformly arranged in the negative pressure cavities, the air holes are connected with an air pump through pipelines, and the air pump provides a negative pressure environment for the negative pressure cavities.

9. A device for preparing a glass fiber ultra-thin coated board paper according to claim 8, characterized in that: The mesh removing mechanism comprises oppositely arranged suction rollers and removing rollers, the suction rollers are located above the coated paper, the removing rollers are located below the mesh belt, the suction rollers and the removing rollers are rotationally connected with the frame, a plurality of negative pressure holes are uniformly arranged on the suction rollers and are in communication with the internal cavities of the suction rollers, the end of the suction roller is connected with the air pump through a rotary joint, a plurality of air holes are uniformly arranged on the removing rollers and are in communication with the internal cavities of the removing rollers, one end of the removing roller is connected with a fan through a rotary joint, and the fan provides positive pressure air for the removing roller; a guide roller for guiding the separated coated paper is arranged at the tail end of the frame, and a driving roller and a driven roller for supporting and driving the mesh belt to rotate are arranged on the frame.

10. A production method based on the production device of glass fiber super-thin coated board paper according to claim 9, characterized in that, The method comprises the following steps: S1, pouring the glass fiber slurry into the headbox, pushing the push rod, the push rod driving the first sealing plate to slide along the guide groove, the first sealing plate driving the second sealing plate or the fourth sealing plate to slide through the inclined surface, the second sealing plate driving the fourth sealing plate to slide through the third sealing plate, or the fourth sealing plate driving the second sealing plate to slide through the third sealing plate, adjusting the size of the slurry outlet; the first motor driving the driving roller to rotate, the driving roller driving the mesh belt to move through the driven roller, and the slurry in the headbox flowing on the mesh belt; S2, rotating the adjusting rod to adjust the height of the spreading roller; the second motor driving the rotating shaft to rotate through the chain, the sprocket and the transmission wheel, the rotating shaft stirring the slurry in the headbox through the stirring rod, the rotating shaft driving the connecting plate to reciprocate through the transmission plate and the transmission rod, the connecting plate driving the fixed pipe to move through the pin column, and the fixed pipe driving the spreading roller to reciprocate through the adjusting rod, thereby spreading the glass fiber slurry on the mesh belt uniformly; S3, the squeezing roller and the support roller squeezing the glass fiber slurry on the mesh belt to squeeze out excess water, the water flowing into the water tank for collection, the squeezed glass fiber slurry being subjected to negative pressure adsorption through the negative pressure cavities, further dehydration of the glass fiber slurry through negative pressure, forming of the coated paper blank through the forming roller, and drying through the drying box. S4, the dried coating paper blank enters the meshing mechanism, the fan blows air through the air hole to the mesh belt, providing upward thrust for the coating paper, promoting the separation of the coating paper and the mesh belt, the air pump provides negative pressure adsorption to the coating paper through the negative pressure hole, so that the coating paper and the mesh belt are easily separated, the separated coating paper is guided out through the guide roller for post-processing.

Images