A kind of laminated aramid composite board production equipment

Abstract

The application discloses a kind of laminated aramid composite board production equipment, it is related to composite board production equipment technical field, including machine case, tension rocker arm and roller assembly are arranged in machine case, further include: first installation cover and second installation cover are arranged in machine case and are sequentially arranged along aramid conveying path, first hot air transmission component is arranged in first installation cover;With the cooperation of hot negative ion wind by Z-shaped trajectory transmission design, it is matched with the design of air jet port with V-shaped notch or symmetrical inclined hole structure again, so that hot negative ion wind is blown from aramid bending inside to outside, cooperates the dynamic state of fiber gap and opens, realizes full-width, full-thickness uniform drying, simultaneously eliminates static electricity and utilizes directional airflow to push fluff, provides clean, dry aramid base material for laminating, avoid humidity uneven, fluff residue leads to poor combination with resin, simultaneously aramid can also be flattened, improve the pressing quality of composite board.

Description

Technical Field

[0001] This invention belongs to the technical field of composite board production equipment, specifically, it relates to a production equipment for laminated aramid composite boards. Background Technology

[0002] Aramid fabric has a high degree of hygroscopicity compared to other fibers during the production process. Increased moisture content will seriously affect the mechanical properties of the product. At the same time, because the surface of aramid fibers is very smooth, aramid fabric will be severely deformed after friction and stretching.

[0003] To address the aforementioned issues, Chinese invention patent CN108673995B discloses a production equipment for laminated aramid composite sheets, comprising: an unwinding device and a laminating device. The unwinding device includes a tension adjusting device and a heating and dehumidifying device. The tension adjusting device includes a tension servo roller, with its two ends connected to one end of two rocker arms, and the other end of the rocker arms connected to a fixed rotating shaft. The tension servo roller is used to convey the aramid fabric, and the rocker arms rotate around the rotation center of the fixed rotating shaft when the tension of the aramid fabric changes. An angular displacement sensor is provided at the end of the fixed rotating shaft, and the tension adjusting device is also equipped with a reset device to provide restoring force for the rotation of the rocker arms. The heating and dehumidifying device includes a heating component and a support structure for supporting the heating component. This invention effectively solves the problems caused by the hygroscopicity and poor abrasion resistance of aramid fabric, thereby ensuring the quality of the aramid thermoplastic composite sheet.

[0004] While the aforementioned equipment has initially solved the problem of aramid's moisture absorption, its heating and dehumidification devices employ a passive dehumidification method with static heating at the bottom of the fabric roll. This method only dries the fabric roll itself, and heat cannot penetrate to the inner layer of the roll, resulting in poor drying uniformity and a tendency for the outer layer to be dry while the inner layer remains damp. Furthermore, during the process of conveying the aramid fabric to the laminating equipment after unwinding, it will reabsorb moisture from the environment. However, the existing equipment does not have a dynamic dehumidification structure, which significantly reduces the dehumidification effect and fails to provide a stable, low-humidity substrate for the lamination process. In addition, aramid is a fiber product, which is prone to generating lint during weaving, cutting, and conveying. This lint is difficult to remove due to electrostatic adsorption, a common industry pain point. These untreated lint particles will hinder the interfacial bonding between the aramid fabric and the resin during the lamination process, leading to defects such as delamination, bulging, and surface roughness in the laminate, which seriously affects the mechanical properties and appearance quality of the product. In view of the above problems, a production equipment for laminating aramid composite sheets is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a production equipment for laminated aramid composite sheets that can overcome or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A production equipment for laminated aramid composite sheets includes a chassis, within which a tensioning rocker arm and a roller pressing assembly are disposed. The equipment further includes: a first mounting cover and a second mounting cover arranged sequentially along the aramid conveying path within the chassis; a first hot air conveying assembly disposed within the first mounting cover; and a second hot air conveying assembly disposed within the second mounting cover; a first limiting and depilatory assembly attached to the aramid output side of the first hot air conveying assembly; a second limiting and depilatory assembly attached to the aramid output side of the second hot air conveying assembly; and an ion hot air blowing assembly. The component, mounted on the chassis, delivers hot negative ion air to the first hot air transmission component and the second hot air transmission component. The aramid fibers pass sequentially through the first hot air transmission component and the first limiting lint removal component, and the second hot air transmission component and the second limiting lint removal component, moving in a Z-shaped trajectory. The hot negative ion air blows from the inside of the aramid bend to the outside of the bend, allowing the hot negative ion air to fully penetrate the gaps between the aramid fibers, achieving uniform dehumidification and drying from the inner layer to the surface of the aramid, while eliminating static electricity on the aramid surface, and working in conjunction with the first limiting lint removal component and the second limiting lint removal component to remove lint.

[0007] Preferably, both the first and second hot air transmission components include an inner cylinder fixedly installed inside the chassis, an exhaust port on the inner cylinder, an outer cylinder rotatably installed on the inner cylinder, and an air jet on the outer cylinder. The aramid moves in contact with the outer cylinder, the exhaust port faces the contact point between the aramid and the outer cylinder, and the hot negative ion air passes through the exhaust port and the air jet and blows towards the inner side of the aramid bend. A first motor is fixedly installed on the outer wall of the chassis, and the output shaft of the first motor extends into the chassis and is connected to the outer cylinder via a pulley assembly.

[0008] Preferably, the jet nozzle is a V-shaped groove, and the groove wall of the V-shaped groove is inclined from the inside to the two ends of the outer cylinder. The hot negative ion air is blown out through the V-shaped groove and diffuses directionally along the two ends of the outer cylinder. The airflow forms a uniform transverse tension along the width direction on the aramid surface. With the rotation of the outer cylinder and the tight fit between the aramid and the outer cylinder, the wrinkles on the aramid surface are dynamically smoothed.

[0009] Preferably, the jet nozzle is a structure of two sets of oblique holes symmetrically distributed along the axial center line of the outer cylinder. After the hot negative ion air is introduced through the hollow cavity of the inner cylinder, it is blown out synchronously through the two sets of symmetrical oblique holes, forming a bidirectional airflow that flows directionally at both ends of the outer cylinder. This airflow forms a uniformly distributed transverse tension on the aramid surface. Combined with the rotation of the outer cylinder and the tight fit between the aramid and the outer cylinder, the wrinkles on the aramid surface are dynamically smoothed.

[0010] Preferably, both the first limiting hair removal component and the second limiting hair removal component include mounting rollers. The two sets of mounting rollers are rotatably mounted on the first mounting cover and the second mounting cover, respectively. Felt is fixedly mounted on both sets of mounting rollers, and the outer surface of the felt is in close contact with the surface of the aramid on the aramid conveying path. When the aramid moves, the mounting rollers are driven to rotate synchronously by friction, which causes the felt to form rolling friction contact with the aramid surface, adhering the lint and fine fluff that have fallen off after being destaticated by hot negative ion air.

[0011] Preferably, a scraper is fixedly installed inside both the first and second mounting covers, and the scraping end of the scraper is elastically and tightly fitted to the outer surface of the felt. When the aramid-driven mounting roller drives the felt to rotate, the scraper continuously scrapes off the lint adsorbed on the surface of the felt.

[0012] Preferably, both the first and second mounting covers are fixedly installed with guide plates, which guide the airflow to blow the lint and fine fluff on the scraper surface, causing the lint and fine fluff to detach from the scraper.

[0013] Preferably, the ion hot air blowing assembly includes a mounting cylinder fixedly mounted on a chassis. The mounting cylinder has two symmetrical mounting cavities, each containing a fan blade. A second motor is fixedly mounted on the mounting cylinder, and a mounting shaft is fixedly mounted on the output end of the second motor. The mounting shaft is fixedly connected to the two sets of fan blades. An electric heater is fixedly mounted in each of the two mounting cavities. The airflow drawn by the rotating fan blades is heated by the electric heater to form hot air. A diversion pipe is fixedly mounted on the chassis, and its two exhaust ports are respectively connected to two inner cylinders. A negative ion generator is installed at the exhaust end of the diversion pipe.

[0014] Preferably, the exhaust end of the first mounting cover is connected to one of the mounting cavities through a first filter pipe, and the second mounting cover is connected to another mounting cavity through a second filter pipe. Both the first filter pipe and the second filter pipe are provided with a filter screen and a moisture-absorbing screen.

[0015] Preferably, the roller pressing assembly includes: conveyor rollers and pressure rollers; a roller pressing box is fixedly installed on the side wall of the housing; multiple sets of conveyor rollers are respectively arranged in the roller pressing box and the housing; multiple sets of pressure rollers are respectively arranged in the roller pressing box and the housing; a first drive box for driving the multiple sets of conveyor rollers to rotate synchronously and a second drive box for driving the multiple sets of pressure rollers to rotate synchronously; both the first drive box and the second drive box are fixedly installed on the outer wall of the roller pressing box; a first coating machine is arranged in the housing; a second coating machine is arranged on the roller pressing box; the first coating machine and the second coating machine are used to coat the surface of the sheet and the aramid fiber surface with adhesive.

[0016] The present invention has at least the following beneficial effects: This invention utilizes a Z-shaped trajectory conveying design in conjunction with a thermal negative ion airflow. This airflow blows from the inside of the aramid bend to the outside, working in conjunction with the dynamic state of the fiber gaps to achieve uniform drying across the entire width and thickness. This solves the problem of external drying and internal dampness in traditional equipment, ensuring that the aramid moisture content remains stable and meets process requirements. Simultaneously, negative ions eliminate static electricity, and directional airflow pushes away lint. Combined with the rolling adhesion, scraping, and export mechanisms of the first and second limiting lint removal components, lint is removed without dead corners and secondary adsorption. This provides a clean and dry aramid substrate for lamination, avoiding uneven humidity and lint residue that could lead to poor bonding with the resin, thereby improving the quality of the composite board.

[0017] This invention utilizes the rotation of the outer cylinders of the first and second hot air transmission components in conjunction with the air jet nozzles of the V-shaped groove or symmetrical oblique hole structure to generate uniform transverse tension along the width direction of the hot negative ion air, dynamically smoothing the wrinkles on the surface of the aramid; the tensioning rocker arm maintains constant tension on the aramid, avoiding deformation during the transmission process. The two work together to ensure the flatness of the aramid before entering the lamination process, improving the surface accuracy and thickness uniformity of the composite board.

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

[0019] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of a production equipment for laminated aramid composite sheets proposed in this invention. Figure 1 ; Figure 2 for Figure 1 Main section Figure 1 ; Figure 3 for Figure 1 Main section Figure 2 ; Figure 4 This is a schematic diagram of the hot air transmission component of a laminated aramid composite sheet production equipment proposed in this invention; Figure 5 This is a cross-sectional view of the outer cylinder of a laminated aramid composite sheet production equipment proposed in this invention; Figure 6 for Figure 5 Schematic diagram of the structure at point A; Figure 7 This is a schematic diagram of the inner cylinder of a laminated aramid composite sheet production equipment proposed in this invention; Figure 8 This is a schematic diagram of the ion hot air blowing component of a laminated aramid composite sheet production equipment proposed in this invention; Figure 9This is a three-dimensional structural diagram of a production equipment for laminated aramid composite sheets proposed in this invention. Figure 2 ; Figure 10 for Figure 9 Main sectional view.

[0020] In the diagram: 1. Chassis; 11. Cover; 12. Roller box; 13. Box cover; 14. Tensioning rocker arm; 2. First mounting cover; 21. Second mounting cover; 22. First hot air transmission assembly; 23. Second hot air transmission assembly; 231. Inner cylinder; 232. Outer cylinder; 233. First motor; 234. Pulley assembly; 235. Air nozzle; 3. First limiting hair removal assembly; 31. Mounting roller; 32. Felt; 33. Scraper; 34. Guide 4. Flow plate; 4. Ion hot air blowing assembly; 41. Mounting cylinder; 42. Mounting cavity; 43. Electric heater; 44. Fan blade; 45. Mounting shaft; 46. Second motor; 47. First filter tube; 48. Second filter tube; 49. Diverter tube; 5. First coating machine; 51. Second coating machine; 52. Conveying roller; 53. Pressure roller; 54. First drive box; 55. Second drive box; 6. Second limit hair removal assembly; 7. Negative ion generator. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] Reference Figures 1-10 A production equipment for laminated aramid composite sheets includes a chassis 1. A cover 11 is rotatably mounted on the top of the chassis 1. The cover 11 can be opened when aramid is being fed to facilitate the installation of the aramid. The chassis 1 is equipped with a tensioning rocker arm 14 and a roller pressing assembly. The tensioning rocker arm 14 is a mechanical device used to adjust the tension of the aramid material during the conveying process. Through the action of the tensioning rocker arm 14, the aramid material can be ensured to run smoothly with a constant tension inside the equipment, avoiding material deformation or unstable operation caused by uneven tension. The roller pressing assembly is the core part of the equipment for realizing material lamination. This assembly is usually composed of one or more rollers. By applying pressure to the aramid material, it is tightly bonded to the pre-coated adhesive or other laminating materials to form a composite sheet.

[0023] It also includes: a first mounting cover 2 and a second mounting cover 21 arranged sequentially within the chassis 1 along the aramid conveying path; the first mounting cover 2 houses a first hot air transmission assembly 22, and the second mounting cover 21 houses a second hot air transmission assembly 23; a first limiting and depilatory assembly 3, attached to the aramid output side of the first hot air transmission assembly 22; a second limiting and depilatory assembly 6, attached to the aramid output side of the second hot air transmission assembly 23; and an ionizing hot air blowing assembly 4, mounted on the chassis 1, blowing hot air onto the first hot air transmission assembly 22 and the second hot air transmission assembly 23. Hot air transmission component 23 delivers hot negative ion air (hot air with negative ions); the aramid fibers pass sequentially through the first hot air transmission component 22 and the first limiting lint removal component 3, the second hot air transmission component 23 and the second limiting lint removal component 6 in a Z-shaped trajectory. The hot negative ion air blows from the inside of the aramid bend to the outside of the bend, allowing the hot negative ion air to fully penetrate the gaps between the aramid fibers, achieving uniform dehumidification and drying from the inner layer to the surface of the aramid, while eliminating static electricity on the aramid surface, and working with the first limiting lint removal component 3 and the second limiting lint removal component 6 to remove lint.

[0024] In use, the ion hot air blowing component 4 blows out hot air containing negative ions. The hot negative ion air is blown to both sides of the aramid through the first hot air transmission component 22 and the second hot air transmission component 23 respectively. When the aramid moves in a Z-shaped trajectory, the first hot air transmission component 22 and the second hot air transmission component 23 serve as nodes that support the aramid to move along the Z-shaped trajectory. The aramid bends at the joint of the first hot air transmission component 22 and the second hot air transmission component 23. The hot negative ion air blows negative ions from the inside of the bend to the outside of the bend.

[0025] When the aramid moves along a Z-shaped trajectory, the bending action at the joint of the first hot air transmission component 22 and the second hot air transmission component 23 will cause the gaps between the aramid fibers to be slightly opened due to bending tension. At this time, the hot negative ion air blows from the inside of the bend to the outside, and the airflow direction is consistent with the direction of fiber gap expansion. It can directly penetrate the surface fibers of the aramid and penetrate deep into the gaps between the inner fibers. Compared with the traditional single-sided surface blowing, this design improves the penetration depth of the hot negative ion air and completely solves the problem of aramid being dry on the outside and moist on the inside. At the same time, the bending node of the Z-shaped trajectory allows the aramid and the hot negative ion air to form bidirectional contact. The first hot air transmission component 22 blows on one side and the second hot air transmission component 23 blows on the other side. With the dynamic conveying process, the aramid is dried evenly across the entire width and thickness, ensuring that the moisture content of the substrate is stably controlled within the process requirements and avoiding poor bonding with the resin during lamination due to uneven humidity.

[0026] Furthermore, when aramid is bent, its outer surface expands slightly outward due to tension, while the inner surface relatively contracts. The airflow blowing from the inside to the outside creates a directional thrust, pushing the lint and fine fluff that have been removed by the hot negative ion air to the outside of the aramid. This airflow thrust works in conjunction with the rolling scraping action of the first limiting lint removal component 3 and the second limiting lint removal component 6. That is, after the lint is pushed away from the aramid body by the airflow, it is immediately scraped off by the felt 32 attached to the outside, preventing the lint from being re-adsorbed on the fiber surface. At the same time, the directional airflow can drive the scraped lint out, preventing the lint from accumulating inside the equipment and ensuring the continuous working efficiency of the lint removal components.

[0027] Reference Figure 2 , Figure 4 and Figure 7 Both the first hot air transmission assembly 22 and the second hot air transmission assembly 23 include an inner cylinder 231 fixedly installed inside the housing 1. The inner cylinder 231 is provided with an exhaust port. An outer cylinder 232 is rotatably installed on the inner cylinder 231. An air jet 235 is provided on the outer cylinder 232. The aramid moves in contact with the outer cylinder 232. The exhaust port faces the contact point between the aramid and the outer cylinder 232. The hot negative ion air passes through the exhaust port and the air jet 235 and blows towards the inside of the aramid bend. A first motor 233 is fixedly installed on the outer wall of the housing 1. The output shaft of the first motor 233 extends into the housing 1 and is connected to the outer cylinder 232 through a pulley assembly 234.

[0028] The inner cylinder 231, which serves as the internal support structure and airflow distribution cavity of the hot air transmission component, is typically made of heat-resistant and corrosion-resistant metal materials such as stainless steel. Its function is to receive the hot negative ion air from the ion hot air blowing component 4 and guide it to the exhaust port. The exhaust port is located on the inner cylinder 231 and is used to guide the hot negative ion air in the inner cylinder 231 to the bonding area between the outer cylinder 232 and the aramid fiber.

[0029] The main function of the outer cylinder 232 is to provide support and guidance for the aramid fibers, and to help the aramid fibers become flat and the hot negative ion wind be dispersed more evenly through its rotation.

[0030] The jet nozzle 235 is located on the outer cylinder 232. After the hot negative ion air passes through the exhaust slot, it is blown towards the inner side of the aramid fiber through the jet nozzle 235. The design of the jet nozzle 235 is crucial to the shape and effect of the airflow. It can be a simple circular hole, a rectangular slit, or a slot with a specific angle and shape to achieve a specific airflow distribution and function. The first motor 233 is used as the power source to drive the rotation of the outer cylinder 232. The pulley assembly 234 connects the output shaft of the first motor 233 to the transmission mechanism of the outer cylinder 232. It is usually composed of a driving pulley, a driven pulley, and a transmission belt, and transmits power through friction or meshing.

[0031] Reference Figure 4The jet nozzle 235 is a V-shaped groove, and the groove wall of the V-shaped groove is inclined from the inside to the two ends of the outer cylinder 232. The hot negative ion air is blown out through the V-shaped groove and diffuses in a direction along the two ends of the outer cylinder 232. The airflow forms a uniform transverse tension along the width direction on the aramid surface. Combined with the rotation of the outer cylinder 232 and the tight fit between the aramid and the outer cylinder 232, the wrinkles on the aramid surface are dynamically smoothed.

[0032] When the hot negative ion air generated by the ion hot air blowing component 4 enters the first hot air transmission component 22 and the second hot air transmission component 23 through the diversion pipe 49 and the inner cylinder 231, it enters the outer cylinder 232 through the exhaust slot on the inner cylinder 231 and is further blown out from the jet nozzle 235 on the outer cylinder 232. Furthermore, the jet nozzle 235 is designed as a V-shaped groove, with its groove wall sloping from the inside out towards both ends of the outer cylinder 232. This unique V-shaped groove structure allows the hot negative ion air to be precisely guided when blown out, directionally diffusing along the axial direction of both ends of the outer cylinder 232. This directional diffusion ensures that the hot negative ion air can uniformly cover the aramid fibers. The entire width creates a uniform transverse tension on the aramid surface along the width direction. This uniform transverse tension, combined with the continuous rotation of the outer cylinder 232 driven by the first motor 233 and the tight fit between the aramid and the outer cylinder 232, works together on the aramid material. The rotation of the outer cylinder 232 provides a dynamic flattening platform for the aramid, while the uniform airflow tension continuously applies a flattening force to the wrinkles on the aramid surface. Through this dynamic and uniform mechanical action, any wrinkles on the aramid surface can be effectively eliminated, thus ensuring the optimal flatness of the aramid before it enters the subsequent roll forming assembly for lamination, significantly improving the quality of the final composite board.

[0033] In summary, designing the jet nozzle 235 as a V-shaped groove, with the groove wall inclined from the inside out towards both ends of the outer cylinder 232, effectively guides the thermal negative ion airflow to diffuse directionally along the axial direction of the outer cylinder 232. This creates a uniform transverse tension along the width direction on the aramid surface, overcoming the uneven airflow distribution problem that may occur with traditional jetting methods. Combined with the rotation of the outer cylinder 232 and the tight fit between the aramid and the outer cylinder 232, this solution achieves dynamic and precise leveling of wrinkles on the aramid surface, significantly improving the flatness and processing quality of the aramid material. It avoids localized tensile deformation caused by uneven airflow distribution, thus ensuring the uniformity and strength of the subsequent laminated composite sheet. Reference Figure 5 and Figure 6The jet nozzle 235 consists of two sets of oblique holes symmetrically distributed along the axial centerline of the outer cylinder 232. After the hot negative ion air is introduced through the hollow cavity of the inner cylinder 231, it is blown out synchronously through the two sets of symmetrical oblique holes, forming a bidirectional airflow that flows directionally at both ends of the outer cylinder 232. This airflow forms a uniformly distributed transverse tension on the aramid surface. Combined with the rotation of the outer cylinder 232 and the tight fit between the aramid and the outer cylinder 232, it dynamically smooths the wrinkles on the aramid surface.

[0034] The aramid fiber moves along a Z-shaped trajectory within the casing 1, passing sequentially through the first hot air transmission assembly 22 and the second hot air transmission assembly 23. The ion hot air blowing assembly 4 delivers hot negative ion air to the hollow chamber of the inner cylinder 231 of the first hot air transmission assembly 22 and the second hot air transmission assembly 23. An outer cylinder 232 is rotatably mounted on the inner cylinder 231. The aramid fiber moves in contact with the outer cylinder 232. The first motor 233 drives the outer cylinder 232 to rotate via a pulley assembly 234. Based on this, the jet nozzle 235 is designed as two sets of oblique holes symmetrically distributed along the axial centerline of the outer cylinder 232. Hot negative ion air is blown out synchronously through these oblique holes, forming a pattern along the outer cylinder 232. The bidirectional airflow 32 flows in both directions along the axis, generating a uniformly distributed transverse tension on the aramid surface. This uniform transverse tension, combined with the rotation of the outer cylinder 232 and the tight fit between the aramid and the outer cylinder 232, works together on the aramid surface. Through this synergistic effect, the wrinkles on the aramid surface can be precisely and dynamically smoothed. Since the airflow is bidirectional and symmetrical, it ensures that the aramid is subjected to uniform force in the width direction, thereby effectively avoiding the stretching deformation that may occur due to uneven force on one side. At the same time, the hot negative ion wind continues to play its role in dehumidification, drying and eliminating static electricity, and works in conjunction with the limiting lint removal component to remove lint.

[0035] Reference Figure 3 Both the first limiting lint removal component 3 and the second limiting lint removal component 6 include mounting rollers 31. The two sets of mounting rollers 31 are rotatably mounted on the first mounting cover 2 and the second mounting cover 21, respectively. Felt 32 is fixedly mounted on both sets of mounting rollers 31, and the outer surface of the felt 32 is in close contact with the surface of the aramid on the aramid conveying path. When the aramid moves, the mounting rollers 31 are driven to rotate synchronously by friction, which causes the felt 32 to form rolling friction contact with the aramid surface, adhering the lint that has fallen off after being destaticated by the hot negative ion air. The first mounting cover 2 and the second mounting cover 21 are both fixedly installed with scrapers 33, and the scraping end of the scraper 33 is elastically and tightly attached to the outer surface of the felt 32. When the aramid drive mounting roller 31 drives the felt 32 to rotate, the scraper 33 continuously scrapes off the lint adsorbed on the surface of the felt 32. The first mounting cover 2 and the second mounting cover 21 are both fixedly installed with guide plates 34. The guide plates 34 guide the airflow to blow the lint and fine fluff on the surface of the scraper 33, so that the lint and fine fluff are removed from the scraper 33.

[0036] When the aramid moves along a Z-shaped trajectory inside the equipment, its surface is in close contact with the outer surface of the felt 32 on the mounting roller 31 in the first limiting lint removal assembly 3 and the second limiting lint removal assembly 6. When the aramid is in a dynamic conveying state, the mounting roller 31 is driven to rotate synchronously by the friction between the aramid and the felt 32, thereby causing the felt 32 to form a continuous rolling contact with the aramid surface. At this time, the hot negative ion wind blown out by the ion hot air blowing assembly 4 has eliminated the static electricity on the aramid surface. The lint and fine fluff that were originally adsorbed on the aramid fiber lose their electrostatic adsorption force and fall off. The fallen lint is firmly adhered by the fiber structure of the felt 32 under the action of rolling friction, thus completing the separation of the lint from the aramid surface. During the rotation of the felt 32 driven by the mounting roller 31, the scraper 33 fixedly installed inside the first mounting cover 2 and the second mounting cover 21 always maintains an elastic and tight fit between the scraping end and the outer surface of the felt 32. When the felt 32 with lint adhering to it rotates to the area in contact with the scraper 33, the scraper 33 continuously scrapes off the lint adhering to the surface of the felt 32 through elastic pressure, avoiding the decrease in the adsorption capacity of the felt 32 due to long-term lint adhesion, and realizing real-time cleaning of the felt 32. The lint scraped off by the scraper 33 tends to accumulate on the surface of the scraper 33, affecting the subsequent scraping effect. At this time, the guide plate 34 fixedly installed inside the first mounting cover 2 and the second mounting cover 21 plays a role. It guides the directional airflow (originating from the hot negative ion air diversion of the ion hot air blowing component 4) inside the equipment to blow the lint and fine fluff on the surface of the scraper 33. The airflow pushes the lint off the scraper 33 and finally discharges it from the casing 1 with the airflow inside the equipment, completing the complete removal of lint.

[0037] In summary, the felt 32 has a dense fiber structure, and compared with the traditional fixed scraping method, the rolling friction contact with the aramid surface has a larger contact area and a more uniform force. It can efficiently adhere to the shed lint without damaging the aramid fiber structure. At the same time, the rolling contact method can cover the entire aramid surface, avoiding the missed areas that occur during fixed scraping, and ensuring that there are no dead corners in lint removal. The mounting roller 31 rotates passively due to the friction of the moving aramid fibers, requiring no additional power source. This simplifies the equipment structure, reduces energy consumption, and allows the rotation speed of the felt 32 to match the aramid conveying speed in real time. This avoids scratches on the aramid surface or incomplete lint removal caused by speed differences, ensuring the stability of aramid conveying and the synchronicity of lint removal. The elastic fit between the scraper 33 and the felt 32 can adapt to the surface condition of the felt 32, ensuring that the scraping end is always in close contact with the felt 32. The continuous scraping action prevents lint from accumulating and clumping on the surface of the felt 32, maintains the adsorption performance of the felt 32, and extends its service life. The guide plate 34 guides the airflow to blow away the lint from the surface of the scraper 33. On the one hand, it prevents the scraped lint from falling back onto the aramid surface or into the equipment, thus avoiding secondary pollution. On the other hand, it quickly removes the lint from the equipment, preventing it from accumulating on the scraper 33, ensuring a clean internal environment, and preventing the accumulated lint from affecting the airflow channel of the hot air transmission component or the working accuracy of the roller pressing component, thus ensuring the continuous and stable operation of the entire production equipment. The hot negative ion wind first eliminates static electricity on the surface of aramid, making it easier for lint to fall off and creating a prerequisite for the adhesion of felt 32; at the same time, the directional airflow formed by the hot negative ion wind and the airflow guided by the guide plate 34 form a combined force to accelerate the discharge of lint. The two work together to further improve the efficiency and thoroughness of lint removal and improve the quality of the composite board produced by subsequent pressing.

[0038] Reference Figure 1 , Figure 8 and Figure 9 The ion hot air blowing assembly 4 includes a mounting cylinder 41 fixedly mounted on the housing 1. The mounting cylinder 41 has two symmetrical mounting cavities 42. Fan blades 44 are rotatably mounted in both mounting cavities 42. A second motor 46 is fixedly mounted on the mounting cylinder 41. A mounting shaft 45 is fixedly mounted on the output end of the second motor 46. The mounting shaft 45 is fixedly connected to the two sets of fan blades 44. An electric heater 43 is fixedly mounted in both mounting cavities 42. The airflow drawn by the rotating fan blades 44 is heated by the electric heater 43 to form hot air. A diversion pipe 49 is fixedly mounted on the housing 1. The two exhaust ports of the diversion pipe 49 are respectively connected to the two inner cylinders 231. A negative ion generator 7 is provided at the exhaust end of the diversion pipe 49. The exhaust end of the first mounting cover 2 is connected to one of the mounting cavities 42 through the first filter pipe 47. The second mounting cover 21 is connected to the other mounting cavity 42 through the second filter pipe 48. A filter screen and a moisture-absorbing screen are provided in both the first filter pipe 47 and the second filter pipe 48.

[0039] The second motor 46 synchronously drives two fan blades 44 to rotate via the mounting shaft 45. When the fan blades 44 rotate, they generate negative pressure suction, drawing airflow through two independent channels: one channel draws airflow from the first mounting cover 2 via the first filter pipe 47, and the other channel draws airflow from the second mounting cover 21 via the second filter pipe 48, forming an internal airflow circulation loop to prevent airflow leakage and energy waste. Both the first filter pipe 47 and the second filter pipe 48 are equipped with filter screens and moisture-absorbing screens. Before entering the mounting cavity 42, the airflow first passes through the filter screen to intercept impurities such as lint and dust, and then passes through the moisture-absorbing screen to absorb moisture, achieving dual purification of the airflow and preventing impurities and moisture from affecting subsequent heating, ionization effects, and the cleanliness of the equipment's interior. Both the moisture-absorbing screen and the filter screen can... After saturation, the airflow is disassembled and replaced. The purified airflow enters the installation cavity 42 and comes into full contact with the electric heater 43 fixedly installed in the installation cavity 42. The electric heater 43 is energized to generate heat, heating the airflow to the temperature required by the process, forming a stable hot air. The heated hot air is transported through the diversion pipe 49. A negative ion generator 7 is set at the exhaust end of the diversion pipe 49. When the hot air flows through the negative ion generator 7, it is ionized to generate hot negative ion air with negative ions, completing the modification of the air. The two exhaust ports of the diversion pipe 49 are respectively connected to the inner cylinder 231 of the first hot air transmission component 22 and the inner cylinder 231 of the second hot air transmission component 23. The hot negative ion air is accurately distributed to the two inner cylinders 231 through the diversion pipe 49, providing a stable air source for the subsequent hot air transmission component to blow air to the aramid. In summary, in this embodiment, the airflow inside the mounting cover is drawn and recycled through the first filter pipe 47 and the second filter pipe 48, avoiding the heat waste caused by the direct discharge of hot air and significantly reducing energy consumption. At the same time, the temperature of the circulating airflow is more stable, reducing the temperature fluctuation of the electric heater 43 and ensuring the uniformity of the hot air temperature. The air inlet is connected to the exhaust end of the first mounting cover 2 and the second mounting cover 21 respectively. When the aramid is dehumidified and destaticated, the airflow that escapes into the casing 1 will flow back into the first mounting cover 2 and the second mounting cover 21 under the balance of air inlet and outlet. Under the action of the guide plate 34, it will be blown towards the scraper 33, thereby blowing away the lint and other objects on the scraper 33, so that the lint and other objects enter the first filter pipe 47 and the second filter pipe 48 for filtration with the airflow. The filter screen intercepts lint and dust, preventing them from entering the installation cavity 42 or inner cylinder 231 and causing component wear and airflow channel blockage; the moisture-absorbing screen absorbs moisture, preventing moisture from affecting the working efficiency of the electric heater 43 and the drying effect of the hot negative ion air, while also preventing rust or lint from forming inside the equipment due to moisture condensation. The integrated design of the electric heater 43 and the negative ion generator 7 enables the airflow to simultaneously perform the dual functions of heating and drying as well as static electricity removal. The hot air solves the problem of dryness on the outside and moisture on the inside of the aramid fibers, while the negative ions eliminate static electricity, making it easier for lint to fall off. This provides a prerequisite for the adhesion of lint to the first limiting lint removal component 3 and the second limiting lint removal component 6, achieving a synergistic effect of drying, static electricity removal, and lint removal. Reference Figure 2 , Figure 3 and Figure 10 The machine includes conveyor rollers 52 and pressure rollers 53. A roller pressing box 12 is fixedly installed on the side wall of the machine housing 1. Multiple sets of conveyor rollers 52 are respectively arranged in the roller pressing box 12 and the machine housing 1, and multiple sets of pressure rollers 53 are respectively arranged in the roller pressing box 12 and the machine housing 1. A first drive box 54 and a second drive box 55 drive multiple sets of pressure rollers 53 to rotate synchronously. Both the first drive box 54 and the second drive box 55 are fixedly installed on the outer wall of the roller pressing box 12. A first coating machine 5 is arranged in the machine housing 1, and a second coating machine 51 is arranged on the roller pressing box 12. The first coating machine 5 and the second coating machine 51 are used to coat the surface of the sheet and the aramid surface with adhesive.

[0040] In this embodiment, the substrate is first coated with resin by the first coating machine 5, and then combined with the aramid layer and rolled together by the conveying roller 52 and the pressure roller 53. The primary composite board after pressing then enters the rolling chamber 12. The second coating machine 51 can coat the surface of the aramid with resin, and then combine it with other materials such as carbon fiber. After being rolled together, it is rolled again by the conveying roller 52 and the pressure roller 53 in the rolling chamber 12. The top of the rolling chamber 12 is provided with an openable cover 13, which can be opened to allow other materials to be passed through the top of the rolling chamber 12 for pressing.

[0041] In addition, a corresponding number of coating machines, pressure rollers 53, and conveyor rollers 52 can be installed in the roller press box 12 as needed.

[0042] Both the first drive box 54 and the second drive box 55 are gear transmission boxes. The motor drives a main shaft to rotate, and the main shaft drives the pressure roller 53 and the conveying roller 52 to rotate through the internal bevel gear.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A production equipment for laminated aramid composite sheets, comprising a chassis (1), wherein a tensioning rocker arm (14) and a roller pressing assembly are disposed within the chassis (1), characterized in that, Also includes: A first mounting cover (2) and a second mounting cover (21) are arranged sequentially inside the chassis (1) along the aramid conveying path. A first hot air transmission assembly (22) is provided inside the first mounting cover (2), and a second hot air transmission assembly (23) is provided inside the second mounting cover (21). The first limiting hair removal component (3) is in contact with the aramid output side of the first hot air transmission component (22); The second limiting hair removal component (6) is in contact with the aramid output side of the second hot air transmission component (23); An ion hot air blowing assembly (4) is installed on the chassis (1) to deliver hot negative ion air to the first hot air transmission assembly (22) and the second hot air transmission assembly (23); The aramid fibers pass sequentially through the first hot air transmission assembly (22) and the first limiting and removing lint assembly (3), the second hot air transmission assembly (23) and the second limiting and removing lint assembly (6) in a Z-shaped trajectory. The hot negative ion air blows from the inside of the aramid bend to the outside of the bend, so that the hot negative ion air can fully penetrate the gaps between the aramid fibers, and the inner layer of the aramid is uniformly dehumidified and dried to the surface layer. At the same time, the static electricity on the surface of the aramid is eliminated, and the lint is removed in conjunction with the first limiting and removing lint assembly (3) and the second limiting and removing lint. Both the first hot air transmission assembly (22) and the second hot air transmission assembly (23) include an inner cylinder (231) fixedly installed inside the chassis (1). The inner cylinder (231) is provided with an exhaust slot. An outer cylinder (232) is rotatably installed on the inner cylinder (231). An air jet (235) is provided on the outer cylinder (232). The aramid moves in contact with the outer cylinder (232). The exhaust slot faces the contact point between the aramid and the outer cylinder (232). The hot negative ion air passes through the exhaust slot and the air jet (235) and blows towards the inside of the aramid bend. A first motor (233) is fixedly installed on the outer wall of the chassis (1). The output shaft of the first motor (233) extends into the chassis (1) and is connected to the outer cylinder (232) through a pulley group (234). The jet nozzle (235) is a V-shaped groove, and the groove wall of the V-shaped groove is inclined from the inside to the two ends of the outer cylinder (232). The hot negative ion wind is blown out through the V-shaped groove and diffuses in a direction along the two ends of the outer cylinder (232). The airflow forms a uniform transverse tension along the width direction on the aramid surface. With the rotation of the outer cylinder (232) and the tight fit between the aramid and the outer cylinder (232), the wrinkles on the aramid surface are dynamically smoothed. Alternatively, the jet nozzle (235) may be two sets of oblique hole structures symmetrically distributed along the axial center line of the outer cylinder (232). After the hot negative ion wind is introduced through the hollow cavity of the inner cylinder (231), it is blown out synchronously through the two sets of symmetrical oblique holes, forming a bidirectional airflow that flows directionally at both ends of the outer cylinder (232). This airflow forms a uniformly distributed transverse tension on the aramid surface. Combined with the rotation of the outer cylinder (232) and the close fit between the aramid and the outer cylinder (232), the wrinkles on the aramid surface are dynamically smoothed. Both the first limiting hair removal assembly (3) and the second limiting hair removal assembly (6) include mounting rollers (31). The two sets of mounting rollers (31) are respectively rotatably mounted on the first mounting cover (2) and the second mounting cover (21). Felt (32) is fixedly mounted on both sets of mounting rollers (31), and the outer surface of the felt (32) is closely attached to the aramid surface on the aramid conveying path. When the aramid moves, the mounting roller (31) is driven to rotate synchronously by friction, which causes the felt (32) to form rolling friction contact with the aramid surface, adhering to the lint and fine fluff that have fallen off after being destaticated by hot negative ion wind. Scraper (33) is fixedly installed inside both the first mounting cover (2) and the second mounting cover (21), and the scraping end of the scraper (33) is elastically and tightly attached to the outer surface of the felt (32). When the aramid drive mounting roller (31) drives the felt (32) to rotate, the scraper (33) continuously scrapes off the lint adsorbed on the surface of the felt (32). Both the first mounting cover (2) and the second mounting cover (21) are fixedly installed with guide plates (34). The guide plates (34) guide the airflow to blow the lint and fine fluff on the surface of the scraper (33), so that the lint and fine fluff are removed from the scraper (33). The ion hot air blowing assembly (4) includes a mounting cylinder (41) fixedly mounted on the chassis (1). The mounting cylinder (41) has two symmetrical mounting cavities (42). Fan blades (44) are rotatably mounted in both mounting cavities (42). A second motor (46) is fixedly mounted on the mounting cylinder (41). A mounting shaft (45) is fixedly mounted at the output end of the second motor (46). The mounting shaft (45) is fixedly connected to the two sets of fan blades (44). An electric heater (43) is fixedly mounted in both mounting cavities (42). The airflow drawn by the rotating fan blades (44) is heated by the electric heater (43) to form hot air. A diversion pipe (49) is fixedly installed on the chassis (1). The two exhaust ports of the diversion pipe (49) are connected to the two inner cylinders (231) respectively. A negative ion generator (7) is provided at the exhaust end of the diversion pipe (49). The exhaust end of the first mounting cover (2) is connected to one of the mounting cavities (42) through the first filter pipe (47), and the second mounting cover (21) is connected to the other mounting cavity (42) through the second filter pipe (48). Both the first filter pipe (47) and the second filter pipe (48) are provided with filter screens and moisture-absorbing screens.

2. The laminated aramid composite sheet production equipment according to claim 1, characterized in that, The roller pressing assembly includes a conveying roller (52) and a pressure roller (53). A roller pressing box (12) is fixedly installed on the side wall of the housing (1). Multiple sets of conveying rollers (52) are respectively arranged in the roller pressing box (12) and the housing (1), and multiple sets of pressure rollers (53) are respectively arranged in the roller pressing box (12) and the housing (1). A first drive box (54) that drives multiple sets of conveying rollers (52) to rotate synchronously and a second drive box (55) that drives multiple sets of pressure rollers (53) to rotate synchronously are fixedly installed on the outer wall of the roller pressing box (12). The first coating machine (5) is installed inside the machine box (1), and the second coating machine (51) is installed on the roller box (12). The first coating machine (5) and the second coating machine (51) are used to coat the surface of the sheet and the aramid surface with adhesive.

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