Lignin-based carbon fiber material glue liquid immersion device

Abstract

The utility model discloses a lignin base carbon fiber material glue liquid immersion device, include: equipment frame, equipment frame bottom is equipped with leveling base, pay off assembly, pay off assembly is installed one side of equipment frame, and carbon fiber silk is wound and is established on pay off assembly, winding assembly, winding assembly sets up the other side of equipment frame, guide component, guide component includes a plurality of sets of guide roll, immersion pool, immersion pool is installed on equipment frame, and immersion pool is installed in press roll and disturbance component, drying unit, drying unit sets up the middle position of equipment frame, visual detection unit, visual detection unit sets up the top of equipment frame, and with immersion pool correspond arrangement, control unit, control unit is used for the regulation and control whole unit operation. The utility model greatly reduces manual operation amount, promotes the overall production continuity, and is more suitable for the demand of scale production to efficiency.

Description

Technical Field

[0001] This utility model relates to the field of composite material manufacturing technology, and in particular to a device for impregnating lignin-based carbon fiber materials with adhesive. Background Technology

[0002] With the increasing global demand for green and environmentally friendly materials and high-performance structural materials, carbon fiber materials, due to their excellent properties such as low density, high strength, corrosion resistance, and high temperature resistance, have been widely used in aerospace, transportation, new energy, and construction engineering. Traditional carbon fiber is mostly made from polyacrylonitrile (PAN), but the high cost of PAN raw materials, the high energy consumption of the preparation process, and the high risk of environmental pollution have restricted the large-scale popularization of carbon fiber materials. Lignin, as one of the main components of agricultural and forestry waste (such as straw and wood), is a natural polymer material that is widely available, inexpensive, and biodegradable. Using it as a raw material to prepare lignin-based carbon fiber can not only reduce the production cost of carbon fiber, but also realize the high-value utilization of agricultural and forestry waste, which is in line with the development needs of the "dual carbon" strategy. Therefore, it has become a research hotspot in the field of carbon fiber materials in recent years. In the preparation of lignin-based carbon fibers, to further improve their mechanical properties, corrosion resistance, and bonding performance with other matrix materials, it is usually necessary to perform a resin impregnation treatment on the lignin-based carbon fiber filaments—that is, to fully impregnate the carbon fiber filaments with a resin with specific functions (such as epoxy resin, phenolic resin, etc.) to form a uniform resin film coating. However, existing resin impregnation technologies and equipment have the following significant problems: Poor immersion uniformity: Traditional equipment often uses simple soaking or single-roller extrusion methods, which can cause carbon fiber filaments to become entangled and stacked in the adhesive, resulting in some areas not being fully wetted and uneven adhesive film thickness, which directly affects the performance stability of the subsequent composite material. Low production efficiency: The existing equipment has a decentralized design for unwinding, guiding, immersion, and drying processes, with poor connection between each link. It is difficult to increase the transmission speed of carbon fiber filaments, and frequent manual adjustment of equipment parameters is required, which is not suitable for large-scale continuous production.

[0003] To address the aforementioned technical issues, this utility model provides a device for immersing lignin-based carbon fiber materials in adhesive solution. Utility Model Content

[0004] The purpose of this invention is to provide a device for impregnating lignin-based carbon fiber materials with adhesive, so as to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a lignin-based carbon fiber material adhesive immersion device, comprising: The equipment rack has a leveling base installed at its bottom. An unwinding assembly is mounted on one side of the equipment frame, and carbon fiber filaments are wound on the unwinding assembly; A winding assembly is disposed on the other side of the equipment rack; A guiding assembly, comprising several sets of guiding rollers arranged sequentially on the top of the equipment frame, wherein one end of a carbon fiber filament passes through several sets of guiding rollers sequentially and is connected to the winding assembly; An immersion tank is installed on the equipment frame and located between the guide roller and the unwinding assembly. A pressure roller and a disturbance assembly are installed inside the immersion tank. A drying unit is located in the middle of the equipment frame; A visual inspection unit is disposed on the top of the equipment rack and is arranged correspondingly to the immersion tank; A control unit is used to regulate the operation of the overall device.

[0006] According to the lignin-based carbon fiber material adhesive immersion device provided by this utility model, the unwinding assembly includes an unwinding motor and an unwinding roller. The unwinding motor is fixed to one side of the equipment frame, and the unwinding roller is rotatably connected to the side of the equipment frame. The unwinding motor and the unwinding roller are axially connected.

[0007] According to the lignin-based carbon fiber material adhesive immersion device provided by this utility model, the winding assembly includes a winding motor and a winding roller. The winding motor is fixed to the side of the equipment frame, and the winding roller is rotatably connected to the side of the equipment frame. The winding motor and the winding roller are axially connected.

[0008] According to the lignin-based carbon fiber material adhesive immersion device provided by this utility model, the disturbance component includes an impeller, the impeller is rotatably connected to the pressure roller, and a disturbance motor is fixedly connected to the immersion tank, the disturbance motor and the pressure roller are axially connected.

[0009] According to the lignin-based carbon fiber material adhesive immersion device provided by this utility model, the drying unit includes a drying roller, an installation frame is installed on the equipment frame, the drying roller is rotatably connected to the installation frame, a drive motor is installed on the installation frame, the drive motor is in transmission cooperation with the drying roller, and a heating sleeve is installed on the outer wall of the drying roller.

[0010] According to the lignin-based carbon fiber material adhesive immersion device provided by this utility model, the visual inspection unit includes a linear motor, which is installed on the top of the equipment frame. A visual recognition camera is installed on the mounting platform of the linear motor, and the visual recognition camera is connected to the control unit.

[0011] The present invention discloses the following technical effects: The device solves the problem of uneven impregnation of carbon fiber filaments in traditional equipment through a combination design of "forced immersion by pressure rollers + assistance from a disturbance component." The pressure rollers completely press the carbon fiber filaments into the adhesive, ensuring full contact between the filaments and the adhesive. The disturbance component, through mechanical stirring or airflow agitation, keeps the adhesive in a slight flow, preventing localized solidification or uneven concentration, while breaking up air bubbles on the surface of the carbon fiber filaments to prevent leakage. In addition, the pressure rollers can squeeze the carbon fiber filaments according to the pressure set by the control unit, removing excess adhesive and ensuring a consistent adhesive film thickness. This lays the foundation for the stable mechanical properties and corrosion resistance of the subsequent lignin-based carbon fiber composite material, reducing product performance fluctuations caused by impregnation issues. The device integrates unwinding, guiding, adhesive immersion, drying, inspection, and rewinding processes onto a single frame, forming a continuous processing flow and eliminating the gaps between processes in traditional decentralized equipment. Each component is linked by a control unit, allowing for synchronized adjustment of parameters such as conveyor speed and drying temperature, preventing production disruptions caused by parameter mismatches. The fully automated operation mode eliminates the need for frequent manual intervention; staff only need to set parameters, check raw material status, and change rolls later, significantly reducing manual labor, improving overall production continuity, and better meeting the efficiency demands of large-scale production. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of the lignin-based carbon fiber material adhesive immersion device of this utility model. Figure I ; Figure 2 This is a schematic diagram of the structure of the lignin-based carbon fiber material adhesive immersion device of this utility model. Figure II .

[0014] The components include: 1. Equipment frame; 2. Leveling base; 3. Guide roller; 4. Immersion tank; 5. Control unit; 6. Unwinding motor; 7. Unwinding roller; 8. Rewinding motor; 9. Rewinding roller; 10. Drying roller; 11. Linear motor; and 12. Visual recognition camera. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Reference Figures 1-2 This utility model provides a device for impregnating lignin-based carbon fiber material with adhesive, comprising: Equipment rack 1, with a leveling base 2 installed at the bottom of equipment rack 1; An unwinding assembly is installed on one side of the equipment frame 1, and carbon fiber filaments are wound on the unwinding assembly; A winding assembly is located on the other side of the equipment rack 1; The guiding assembly includes several sets of guide rollers 3, which are arranged sequentially on the top of the equipment frame 1. One end of the carbon fiber filament passes through the several sets of guide rollers 3 and is connected to the winding assembly. Immersion tank 4 is installed on equipment frame 1 and located between guide roller 3 and unwinding assembly. Pressure roller and agitation assembly are installed inside immersion tank 4. The drying unit is located in the middle of the equipment frame 1; A visual inspection unit is installed on the top of the equipment rack 1 and is arranged correspondingly to the immersion tank 4. Control unit 5 is used to regulate the operation of the overall device.

[0018] First, the staff adjusts the equipment frame 1 to a horizontal position using the leveling base 2 to prevent the carbon fiber filaments from shifting or the adhesive from leaking due to equipment tilting. Then, a preset type of functional adhesive (such as epoxy resin or phenolic resin) is injected into the immersion tank 4. Key parameters such as adhesive temperature, agitation frequency, drying temperature, and carbon fiber filament transmission speed are set via the control unit 5. Simultaneously, the winding status of the carbon fiber filaments on the unwinding assembly is checked to ensure there are no tangles or knots. The control unit 5 is activated, and the unwinding assembly begins to release the lignin-based carbon fiber filaments at a uniform speed. Guided by the guide assembly, the carbon fiber filaments enter the transmission path: first, they pass through the guide roller 3 at the top of the equipment frame 1 near the unwinding assembly, where the guide roller 3 corrects the transmission direction to prevent the carbon fiber filaments from shifting. Then, the carbon fiber filaments enter the immersion tank 4, where they are completely pressed into the adhesive by the pressure rollers, ensuring full contact between the filaments and the adhesive. During the immersion of carbon fiber filaments, the agitation components are activated simultaneously, maintaining a slight flow of the adhesive solution in the immersion tank 4 through mechanical stirring or airflow disturbance. This prevents localized solidification or uneven concentration of the adhesive solution, ensuring that each carbon fiber filament is immersed in a consistent composition of adhesive. It also breaks up air bubbles on the surface of the carbon fiber filaments, preventing leakage due to bubble blockage. Simultaneously, the pressure rollers, according to the pressure set by the control unit 5, moderately compress the immersed carbon fiber filaments to remove excess adhesive, ensuring uniform adhesive film thickness. The carbon fiber filaments, now fully immersed, are guided by the subsequent guide rollers 3 to the drying unit in the middle of the equipment frame 1. At a preset temperature, the adhesive solution on the surface of the carbon fiber filaments is rapidly cured and shaped, forming a stable adhesive film coating. The drying temperature and conveying speed are precisely matched by the control unit 5, preventing both excessively high temperatures that could cause film cracking and excessively low temperatures that could lead to incomplete drying, affecting subsequent winding quality. Along the path of the carbon fiber filaments from the immersion tank 4 to the drying unit, the vision inspection unit continuously photographs and analyzes the state of the adhesive film on the surface of the carbon fiber filaments. Image recognition technology is used to detect defects such as damage, incomplete immersion, and uneven thickness in the adhesive film. If any defects are found, the vision inspection unit immediately sends a signal to the control unit 5. The control unit 5 can then pause the equipment operation according to a preset program or mark the defective section at the winding assembly for subsequent sorting. After drying and setting, and once the carbon fiber filaments have passed inspection, they are finally guided to the winding assembly by the guide roller 3. The winding assembly winds the filaments at a uniform speed matched to the unwinding assembly, forming a neat carbon fiber filament roll. When the carbon fiber filaments on the unwinding assembly are about to be completely released, the control unit 5 issues a warning, allowing the operator to replace the roll with a new one, thus achieving continuous cyclical operation.

[0019] The scheme is further optimized. The unwinding assembly includes an unwinding motor 6 and an unwinding roller 7. The unwinding motor 6 is fixed on one side of the equipment frame 1, and the unwinding roller 7 is rotatably connected to the side of the equipment frame 1. The unwinding motor 6 and the unwinding roller 7 are axially connected.

[0020] The control unit 5 sends a start signal to the unwinding motor 6 according to the preset production parameters. After receiving the signal, the unwinding motor 6 starts to run. Since the unwinding motor 6 and the unwinding roller 7 are connected by a shaft, the rotational power of the motor can be directly transmitted to the unwinding roller 7, driving the unwinding roller 7 to rotate around the rotation connection point on the side of the equipment frame 1.

[0021] The scheme is further optimized. The winding assembly includes a winding motor 8 and a winding roller 9. The winding motor 8 is fixed on the side of the equipment frame 1, and the winding roller 9 is rotatably connected to the side of the equipment frame 1. The winding motor 8 and the winding roller 9 are axially connected.

[0022] During the winding process, the control unit 5 coordinates the rotation speed of the winding motor 8 with the transmission speed of the unwinding motor 6 and the drying unit to ensure that the winding speed is perfectly matched with the transmission speed of the carbon fiber filaments, preventing the carbon fiber filaments from becoming too tight or too loose. Simultaneously, as the diameter of the carbon fiber filament roll gradually increases during winding, the control unit 5 fine-tunes the rotation speed of the winding motor 8 in real time according to the change in roll diameter, ensuring constant winding tension. Ultimately, this results in a neat and compact arrangement of the wound carbon fiber filament rolls, facilitating subsequent storage and use.

[0023] The scheme is further optimized. The disturbance component includes an impeller, which is rotatably connected to the pressure roller. A disturbance motor is fixedly connected to the immersion tank 4, and the disturbance motor is axially connected to the pressure roller.

[0024] The disturbance motor is fixed on the immersion tank 4 and connected to the pressure roller shaft. When the carbon fiber filament enters the immersion tank 4 and is pressed into the adhesive by the pressure roller, the control unit 5 sends a start signal to the disturbance motor. The disturbance motor runs and drives the pressure roller to rotate through the shaft connection structure. Since the impeller is connected to the pressure roller, the rotation of the pressure roller synchronously drives the impeller to rotate in the adhesive liquid. The rotation of the impeller mechanically agitates the surrounding adhesive liquid, causing a slight circulation within the immersion tank 4. This prevents uneven concentration or solidification caused by prolonged stagnation of the adhesive in localized areas, ensuring consistent adhesive composition in contact with the carbon fiber filaments. Furthermore, the flowing adhesive liquid breaks up air bubbles adhering to the surface of the carbon fiber filaments, preventing air bubbles from blocking contact between the adhesive and the filaments and causing leakage. Simultaneously, it helps the adhesive liquid penetrate more fully into the interfiber spaces of the carbon fiber filaments, improving the wetting effect.

[0025] The scheme is further optimized. The drying unit includes a drying roller 10. An installation frame is installed on the equipment frame 1. The drying roller 10 is rotatably connected to the installation frame. A drive motor is installed on the installation frame. The drive motor and the drying roller 10 are connected by transmission. A heating sleeve is installed on the outer wall of the drying roller 10.

[0026] The mounting frame is fixed on the equipment frame 1 to provide support for the drying roller 10. The drying roller 10 is rotatably connected to the mounting frame. The drive motor is mounted on the mounting frame and drives the drying roller 10 (e.g., through gears, belts, etc.). When the control unit 5 starts the drying unit, the drive motor runs and transmits power to the drying roller 10 through the transmission structure, causing the drying roller 10 to rotate. Simultaneously, the control unit 5 sends a heating signal to the heating sleeve on the outer wall of the drying roller 10. The heating sleeve begins to heat up and transfers heat to the roller body of the drying roller 10, so that the surface of the drying roller 10 reaches the preset drying temperature. When the carbon fiber filaments immersed in the adhesive pass around the rotating drying roller 10, the heat on the surface of the drying roller 10 is evenly transferred to the surface of the carbon fiber filaments, heating and drying the adhesive. The rotating drying roller 10 ensures that the carbon fiber filaments are in full contact with the roller body, avoiding uneven heating in certain areas that could cause the adhesive film to crack or be incompletely dried. At the same time, the rotation of the drying roller 10 also assists in the transmission of the carbon fiber filaments, working in conjunction with the unwinding and rewinding components to maintain a stable transmission speed, ultimately achieving efficient and uniform curing of the adhesive.

[0027] The scheme is further optimized. The visual inspection unit includes a linear motor 11, which is mounted on the top of the equipment rack 1. A visual recognition camera 12 is mounted on the mounting platform of the linear motor 11 and is connected to the control unit 5.

[0028] A linear motor 11 is mounted on the top of the equipment rack 1, and a visual recognition camera 12 is fixed on the mounting platform of the linear motor 11 and connected to the control unit 5. When the device is started, the control unit 5 sends a control signal to the linear motor 11, and the linear motor 11 drives the mounting platform to reciprocate or move to a fixed point along the top of the equipment rack 1, thereby driving the visual recognition camera 12 to move synchronously.

[0029] During its movement, the visual recognition camera 12 continuously captures images of the carbon fiber filament surface after passing through the immersion tank 4 and before entering the drying unit at a preset shooting frequency, acquiring image information about the adhesive film's condition. The captured images are transmitted in real-time to the control unit 5. The control unit 5's built-in image analysis algorithm processes the images to identify defects such as damage, incomplete impregnation, or uneven thickness in the adhesive film. If a defect is detected, the control unit 5 immediately issues a warning signal, prompting staff to address the issue promptly. Simultaneously, it records the defect location and relevant production parameters, providing data support for subsequent quality traceability and process optimization, ensuring that non-conforming products are promptly screened to avoid batch quality problems.

[0030] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 this utility model.

[0031] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A device for immersing lignin-based carbon fiber material adhesive, characterized in that, include: Equipment rack (1), with a leveling base (2) installed at the bottom of the equipment rack (1); An unwinding assembly is installed on one side of the equipment frame (1), and carbon fiber filaments are wound on the unwinding assembly; A winding assembly is disposed on the other side of the equipment rack (1); The guiding assembly includes several sets of guiding rollers (3), which are arranged sequentially on the top of the equipment frame (1). One end of the carbon fiber filament passes through several sets of guiding rollers (3) and is connected to the winding assembly. Immersion tank (4), the immersion tank (4) is installed on the equipment frame (1) and located between the guide roller (3) and the unwinding assembly, and the immersion tank (4) is equipped with a pressure roller and a disturbance assembly; A drying unit is provided, which is located in the middle of the equipment rack (1); A visual inspection unit is disposed on the top of the equipment rack (1) and is arranged correspondingly to the immersion tank (4); Control unit (5), which is used to regulate the operation of the overall device.

2. The lignin-based carbon fiber material adhesive immersion device according to claim 1, characterized in that, The unwinding assembly includes an unwinding motor (6) and an unwinding roller (7). The unwinding motor (6) is fixed to one side of the equipment frame (1), and the unwinding roller (7) is rotatably connected to the side of the equipment frame (1). The unwinding motor (6) and the unwinding roller (7) are axially connected.

3. The lignin-based carbon fiber material adhesive immersion device according to claim 1, characterized in that, The winding assembly includes a winding motor (8) and a winding roller (9). The winding motor (8) is fixed to the side of the equipment frame (1), and the winding roller (9) is rotatably connected to the side of the equipment frame (1). The winding motor (8) and the winding roller (9) are axially connected.

4. The lignin-based carbon fiber material adhesive immersion device according to claim 1, characterized in that, The disturbance component includes an impeller, which is rotatably connected to the pressure roller. A disturbance motor is fixedly connected to the immersion tank (4), and the disturbance motor is axially connected to the pressure roller.

5. The lignin-based carbon fiber material adhesive immersion device according to claim 1, characterized in that, The drying unit includes a drying roller (10), and a mounting frame is installed on the equipment frame (1). The drying roller (10) is rotatably connected to the mounting frame. A drive motor is installed on the mounting frame. The drive motor and the drying roller (10) are in transmission cooperation. A heating sleeve is installed on the outer wall of the drying roller (10).

6. The lignin-based carbon fiber material adhesive immersion device according to claim 1, characterized in that, The visual detection unit includes a linear motor (11), which is mounted on the top of the equipment rack (1). A visual recognition camera (12) is mounted on the mounting platform of the linear motor (11), and the visual recognition camera (12) is connected to the control unit (5).

Images