Carbon fiber tube coating device and method

Abstract

The invention discloses a carbon fiber tube coating device and method, and relates to the technical field of carbon fiber tube production equipment.The carbon fiber tube coating device comprises a workbench, a rack fixedly connected with the workbench and a plurality of mandrels used for supporting the inner wall of a carbon fiber tube when the carbon fiber tube is coated; the workbench is provided with a sliding mechanism which is used for moving the mandrel to coat the carbon fiber tube, the sliding mechanism comprises a sliding piece which is connected with the workbench in a sliding mode, the mandrel is supported on the sliding piece, the rack is provided with a pressing mechanism which is used for pressing the mandrel when the carbon fiber tube is coated, and the pressing mechanism is used for pressing the mandrel when the carbon fiber tube is coated. The core shaft can accurately move along a preset path through the arrangement of the sliding mechanism, so that it is guaranteed that the carbon fiber tube is kept uniform and flat in the coating process, the pressing mechanism is used for effectively pressing the core shaft in the coating process, the carbon fiber raw material plate is prevented from displacing or falling off in the coating process, and the product quality is further improved.

Description

Technical Field

[0001] This application relates to the technical field of carbon fiber tube production equipment, and in particular to a carbon fiber tube coating device and method. Background Art

[0002] Due to its characteristics of light weight and high strength, carbon fiber tubes have been widely used in fields such as aerospace and automotive manufacturing. However, there are many challenges in the traditional production process of carbon fiber tubes. Especially in the coating process, how to efficiently achieve uniform coating of carbon fiber raw material plates on the mandrel has become one of the key issues. Although the current carbon fiber tube coating equipment on the market can basically meet the production requirements, there is still great room for improvement in terms of coating quality and other aspects. In order to improve the coating quality of carbon fiber tubes, manual or semi-automatic methods are usually adopted in related technologies. Specifically, the common methods include: 1) Manually winding the carbon fiber raw material plate around the mandrel. This method is simple and easy to implement, but it has a large labor intensity, low efficiency, and is prone to uneven coating; 2) Using simple mechanical auxiliary tools, such as manual rollers or fixed brackets. These tools can partially reduce the burden on workers, but still cannot completely avoid quality fluctuations caused by human factors; 3) Using equipment such as electric rollers or conveyor belts to assist in the coating process. Such equipment can improve production efficiency to a certain extent, but due to the lack of precise control mechanisms, it is still difficult to ensure the coating quality. Although the existing various methods and technical means have solved some problems of carbon fiber tube coating to varying degrees, they generally have the following defects: The coating accuracy is not high, and problems such as uneven coating tightness and inconsistent thickness are likely to occur, affecting the quality and performance of the final product. Therefore, there is an urgent need to develop a device that can improve the coating quality of carbon fiber tubes to overcome the deficiencies in the existing technology. Summary of the Invention

[0003] To help solve the technical problem of improving the coating quality of carbon fiber tubes, this application provides a carbon fiber tube coating device and method.

[0004] In the first aspect, this application provides a carbon fiber tube coating device, adopting the following technical solutions: A carbon fiber tube coating device includes a workbench, a frame fixedly connected to the workbench, and multiple mandrels for supporting the inner wall of the carbon fiber tube during coating. A sliding mechanism for moving the mandrel to coat the carbon fiber tube is provided on the workbench. The sliding mechanism includes a sliding member slidably connected to the workbench, and the mandrel is supported on the sliding member. A pressing mechanism for pressing the mandrel during coating is provided on the frame.

[0005] By adopting the above technical solution, the designs of the workbench, the frame and the mandrel ensure the stability and reliability of the device structure, providing a solid foundation for subsequent operations; the setting of the sliding mechanism enables the mandrel to move precisely along a predetermined path, thereby ensuring that the carbon fiber tube remains uniform and flat during the covering process. The function of the pressing mechanism is to effectively press the mandrel during the covering process, preventing the carbon fiber raw material plate from shifting or falling off during the covering process, and thus improving the uniformity of the protection tightness of the carbon fiber tube and the product quality. Optionally, the sliding mechanism further includes a driving motor and a transmission lead screw. The driving motor is fixedly installed on the workbench. The transmission lead screw is rotatably arranged on the workbench. The output shaft of the driving motor is fixedly connected to the transmission lead screw. The side of the sliding member close to the workbench is in threaded transmission connection with the transmission lead screw.

[0006] By adopting the above technical solution, the sliding mechanism, driven by the driving motor and the transmission lead screw, enables the sliding member to precisely control the moving position and speed of the mandrel. This not only improves the automation degree of the covering process, reduces the errors of manual operations, but also enhances the production efficiency and product quality. Specifically: the driving motor is fixedly installed on the workbench, ensuring the stability and reliability of power transmission; the transmission lead screw is rotatably arranged on the workbench and fixedly connected to the output shaft of the driving motor, realizing the function of converting rotational motion into linear motion, thereby driving the sliding member to move smoothly along a predetermined path; the sliding member is in threaded transmission connection with the transmission lead screw, ensuring that the sliding member moves precisely under the condition of uniform force, further enhancing the precision and stability of the equipment.

[0007] Optionally, the pressing mechanism includes a pressing member, a guiding member and a pressing air cylinder. The guiding member is vertically slidably connected to the frame. The pressing member is arranged opposite to the sliding member and is hinged to the guiding member. The pressing air cylinder is fixedly installed on the frame, and the piston rod of the pressing air cylinder is connected to the end of the guiding member far away from the pressing member.

[0008] By adopting the above technical solution, the pressing mechanism can effectively press the mandrel on the sliding member, ensuring that the carbon fiber raw material plate does not shift or separate during the covering process, and enhancing the compactness of the covering of the carbon fiber tube. Specifically: the guiding member is vertically slidably connected to the frame, ensuring the stability and accuracy of the pressing action; the pressing member is arranged opposite to the sliding member and is hinged to the guiding member, enabling the pressing force to be evenly distributed on the outer surface of the mandrel or the carbon fiber tube, avoiding damage caused by excessive local force; the pressing air cylinder is fixedly installed on the frame and is connected to the end of the guiding member far away from the pressing member through the piston rod, realizing fast and reliable pressing and releasing operations, and improving the production efficiency.

[0009] Optionally, elastic members are respectively provided on both sides of the hinge axis of the guiding member and the pressing member. The elastic members are springs. One end of each spring is in pressing contact with the guiding member, and the other end of each spring is in contact with the pressing member.

[0010] By adopting the above technical solution, the pressing mechanism of the carbon fiber tube coating device can be provided with elastic members between the pressing member and the guiding member, so that the pressing member can fit more closely on the mandrel or the coated carbon fiber tube, thereby improving the compactness of the thickness of the carbon fiber tube during the coating process and avoiding the decline of the coating quality caused by uneven pressure. At the same time, the elastic members can also press the mandrel with different diameters through elastic deformation to realize the production of carbon fiber tubes with different diameters. Optionally, the coating device further includes a pressing mechanism. The pressing mechanism includes a pressing table fixed on one side of the workbench. A concave mold adapted to the outer wall of the mandrel is provided on the side of the pressing table close to the workbench. A positioning component is provided on the side of the concave mold close to the workbench. The positioning component includes a positioning plate for positioning the mandrel and the carbon fiber raw material plate. A pressing component is provided on the frame. The pressing component includes a pressing plate, and the pressing plate is arranged opposite to the concave mold.

[0011] By adopting the above technical solution, the pressing mechanism can realize the pre-pasting of the carbon fiber raw material plate and the mandrel before coating, ensuring the accurate position of the two during the coating process. Specifically, the concave mold on the pressing table is adapted to the outer wall of the mandrel, which can effectively prevent the mandrel from shifting during the positioning process; at the same time, the positioning plate in the positioning component can accurately fix the carbon fiber raw material plate, ensuring its flatness and stability. The pressing plate in the pressing component is arranged opposite to the concave mold, and can apply uniform pressure to the carbon fiber raw material plate before coating, so that it closely adheres to the surface of the mandrel, thereby improving the coating quality.

[0012] Optionally, the coating device further includes a raw material plate feeding component for feeding the carbon fiber raw material plate. The raw material plate feeding component includes a raw material plate bin, a rotating shaft rotatably arranged on the raw material plate bin, a rotating cylinder for driving the rotation of the rotating shaft for feeding, a feeding cylinder fixed on the rotating shaft, and a suction cup connected to the piston rod of the feeding cylinder for adsorbing the carbon fiber raw material plate.

[0013] By adopting the above technical solution, the raw material plate feeding component of the coating device can realize the automatic feeding process. Specifically: the raw material plate bin is used to store the carbon fiber raw material plate to ensure continuous supply; the rotating cylinder drives the rotation of the rotating shaft, so that the carbon fiber raw material plates stored in the raw material plate bin are sent to the feeding position one by one; the feeding cylinder pushes the suction cup to act, and the suction cup adsorbs the carbon fiber raw material plate and accurately places it at the specified position; the combined action of these technical means improves the production efficiency, reduces manual operation, reduces the labor intensity, and ensures the stability and accuracy of the feeding process.

[0014] Optionally, the coating device further includes a mandrel loading assembly for loading the mandrels. The mandrel loading assembly includes a mandrel bin, a lifting member for lifting the mandrels for loading, a through hole adapted to the lifting member is provided on the bottom wall of the mandrel bin, the lifting member passes through the through hole and is slidably connected to the inner wall of the mandrel bin, and a lifting cylinder fixed on the outer wall of the mandrel bin is further included. The output shaft of the lifting cylinder is connected to one end of the lifting member away from the mandrel bin.

[0015] By adopting the above technical solutions, the mandrel loading assembly can realize the automatic mandrel loading process and improve the production efficiency. Specifically: the design of the mandrel bin enables multiple mandrels to be stored in an orderly manner, avoiding the cumbersome operation of placing them one by one manually; the combined use of the lifting member and the lifting cylinder can accurately push a single mandrel out of the mandrel bin when needed, ensuring that each mandrel can be precisely loaded into the subsequent workstations; the design of the through hole facilitates the setting of the lifting cylinder outside the mandrel bin, which is beneficial to the safety and reliability of the lifting cylinder during operation; the overall structure is compact, occupies a small space, and is convenient to be integrated into the existing production line, improving the overall automation level of the equipment. Optionally, the coating device further includes a conveying mechanism for conveying the mandrels. The conveying mechanism includes a conveying frame, a driving shaft rotatably provided at one end of the conveying frame, a driven shaft at the other end, a conveying motor for driving the driving shaft to rotate, driving pulleys are respectively provided at both ends of the driving shaft, driven pulleys are respectively provided at both ends of the driven shaft, the driving pulley and the driven pulley on the same side are connected by a conveyor belt, and the conveying frame is connected to the workbench through a lifting driving assembly.

[0016] By adopting the above technical solutions, the automatic conveying of the mandrels is realized, and the production efficiency and precision are improved. Specifically: the conveying motor drives the driving shaft to rotate, driving the conveyor belt to operate, realizing the stable transmission of the mandrels on the conveying frame. The lifting driving assembly enables the conveying frame to move up and down along the guide rail, and can convey the mandrels to working positions at different heights, increasing the applicability of the equipment. Optionally, the lifting driving assembly includes a guide rail and a slider for guiding the conveying frame. The guide rail is slidably connected to the slider. The guide rail is fixed on the workbench, and the slider is fixedly connected to the conveying frame. A lifting cylinder is further included. One end of the lifting cylinder is connected to the workbench, and the other end is connected to the conveying frame.

[0017] By adopting the above technical solution, the stable lifting of the conveying rack can be achieved, ensuring the precise conveyance of the mandrel at different height positions, thereby improving the accuracy and efficiency of the carbon fiber tube coating process. Specifically: The combined use of the guide rail and the slider ensures the smooth movement of the conveying rack in the vertical direction, avoiding the positioning error of the mandrel caused by vibration or deviation; the setting of the lifting cylinder makes the lifting and lowering actions of the conveying rack faster and more reliable, improving the working speed and stability of the entire device. Secondly, the present application provides a carbon fiber tube coating method, adopting the following technical solution: A carbon fiber tube coating method, based on the above carbon fiber tube coating device, includes the following steps: S1. Convey the carbon fiber raw material plate to the pressing table and position it, and convey the mandrel to the female die of the pressing table and position it; S2. Press the mandrel to make one side of the carbon fiber raw material plate adhere to the mandrel; S3. Convey the mandrel adhered with the carbon fiber raw material plate to the sliding member; S4. Press the pressing member against the mandrel; S5. Drive the sliding member to move, so that the carbon fiber raw material plate coats the mandrel to form a carbon fiber tube; S6. Loosen the pressing member and convey the mandrel coated with the carbon fiber tube to the next process.

[0018] By adopting the above technical solution, the carbon fiber tube coating method can realize automated production, improving production efficiency and product quality. Specifically: S1. By conveying the carbon fiber raw material plate to the pressing table and precisely positioning it, the position accuracy in the subsequent coating process is ensured; S2. By pressing the mandrel, one side of the carbon fiber raw material plate is tightly adhered to the mandrel, ensuring the initial sticking and fixing of the mandrel and the carbon fiber raw material plate; S3. Convey the mandrel already adhered with the carbon fiber raw material plate to the sliding member, preparing for the next coating process; S4. By using the pressing member to press against the mandrel, the stability between the material and the mandrel during the coating process is further enhanced; S5. Drive the sliding member to move along the set path, so that the carbon fiber raw material plate evenly and smoothly coats the surface of the mandrel, forming a dense and high-quality carbon fiber tube; S6. After the coating is completed, loosen the pressing member and transfer the finished mandrel to the next process, realizing a continuous and efficient assembly line operation mode.

[0019] In summary, the present application includes at least one of the following beneficial technical effects: 1. During the wrapping process, the pressing mechanism effectively presses the mandrel to prevent the carbon fiber raw material plate from shifting or falling off. The sliding mechanism realizes the precise movement of the mandrel through the cooperation of the driving motor and the transmission lead screw, which helps to improve the wrapping density of the carbon fiber raw material plate on the mandrel, thereby improving the wrapping consistency and quality; 2. Through the coordinated action of the pressing member, the guiding member and the pressing cylinder, the pressing mechanism effectively fixes the mandrel and prevents displacement during the wrapping process, thus enhancing the stability and reliability of the wrapping process; 3. The design of the elastic member increases the contact pressure between the pressing member and the mandrel, further enhancing the stability during the wrapping process, reducing the wrapping quality problems caused by external vibrations and other factors, and at the same time being applicable to the wrapping of carbon fiber tubes with different diameters. Description of the Drawings

[0020] Figure 1 It is a schematic structural view of the rear view of a carbon fiber tube wrapping device disclosed in the present application.

[0021] Figure 2 It is a sectional view of a carbon fiber tube wrapping device disclosed in the present application.

[0022] Figure 3 It is a schematic structural view of the front view of a carbon fiber tube wrapping device disclosed in the present application.

[0023] Figure 4 It is a schematic structural view of the bottom view of a carbon fiber tube wrapping device disclosed in the present application.

[0024] Description of the Reference Numerals: 1, workbench; 2, frame; 3, mandrel; 4, sliding mechanism; 41, sliding member; 411, sliding plate; 412, elastic plate; 42, driving motor; 43, transmission lead screw; 5, pressing mechanism; 51, pressing member; 52, guiding member; 521, guide post; 522, hinge shaft; 53, pressing cylinder; 54, elastic member; 6, pressing and pasting mechanism; 61, pressing and pasting table; 611, female die; 62, positioning assembly; 621, positioning plate; 622, positioning cylinder; 63, pressing and pasting assembly; 631, pressing plate; 632, pressing and pasting cylinder; 7, raw material plate feeding assembly; 71, raw material plate bin; 72, rotating shaft; 73, rotating cylinder; 74, feeding cylinder; 75, suction cup; 8, mandrel feeding assembly; 81, mandrel bin; 82, lifting member; 83, lifting cylinder; 9, conveying mechanism; 91, conveying frame; 92, driving shaft; 93, driven shaft; 94, driving pulley; 95, driven pulley; 96, conveyor belt; 961, limiting plate; 97, conveying motor; 98, lifting drive assembly; 981, guide rail; 982, slider; 983, lifting cylinder. Detailed Embodiments

[0025] The following will further elaborate on this application Figures 1 to 4 in detail.

[0026] An embodiment of this application discloses a carbon fiber tube coating device.

[0027] A carbon fiber tube coating device, referring to Figure 1 and Figure 2 , includes a workbench 1, a frame 2, multiple mandrels 3, a sliding mechanism 4, and a pressing mechanism 5. The frame 2 is fixedly connected to both ends of the workbench 1 and extends above the workbench 1. The mandrel 3 is used to support the inner wall of the carbon fiber tube during the coating process. The sliding mechanism 4 is arranged on the workbench 1 and is used to move the mandrel 3 to coat the carbon fiber tube. The sliding mechanism 4 includes a sliding member 41 slidably connected to the workbench 1. The sliding member 41 is slidably mounted on the workbench 1 through a guide rail and a slider. The sliding member 41 includes a sliding plate 411 and an elastic plate 412. The mandrel 3 is supported on the elastic plate 412. The elastic plate 412 can be selected from an elastic rubber plate or an elastic silica gel plate, which helps to increase the friction force of the carbon fiber raw material plate when coating the mandrel 3 and prevent the mandrel 3 from slipping when rolling. The pressing mechanism 5 is arranged on the frame 2 and is used to press the mandrel 3 during the coating of the carbon fiber tube; the design of the workbench 1 and the frame 2 ensures the stability and reliability of the device structure and provides a solid foundation for subsequent operations; the setting of the sliding mechanism 4 enables the mandrel 3 to move precisely along a predetermined path, thus ensuring that the carbon fiber tube remains uniform and flat during the coating process. The function of the pressing mechanism 5 is to effectively press the mandrel 3 during the coating process to prevent the carbon fiber raw material plate from shifting or falling off during the coating process, which helps to improve the compactness of the carbon fiber raw material plate coating the mandrel 3, thereby improving the product quality.

[0028] Referring to Figure 1 , the sliding mechanism 4 further includes a driving motor 42 and a transmission lead screw 43. The driving motor 42 is fixedly installed on the workbench 1. The transmission lead screw 43 is rotatably arranged on the workbench 1. The output shaft of the driving motor 42 is fixedly connected to the transmission lead screw 43. The side of the sliding member 41 close to the workbench 1 is in threaded transmission connection with the transmission lead screw 43; through the drive of the driving motor 42 and the transmission lead screw 43, the sliding mechanism 4 enables the sliding member 41 to accurately control the moving position and speed of the mandrel 3. This not only improves the automation degree of the coating process, reduces the error of manual operation, but also improves the production efficiency and product quality. The transmission lead screw 43 is rotatably arranged on the workbench 1 and is fixedly connected to the output shaft of the driving motor 42, realizing the function of converting rotational motion into linear motion, thereby driving the sliding member 41 to move smoothly along a predetermined path; the sliding member 41 is in threaded transmission connection with the transmission lead screw 43, ensuring that the sliding member 41 moves precisely under the condition of uniform force, further enhancing the accuracy and stability of the equipment.

[0029] Referring toFigure 1 and Figure 2 , the pressing mechanism 5 includes a pressing member 51, a guiding member 52, and a pressing cylinder 53. The guiding member 52 is vertically slidably connected to the frame 2. The pressing member 51 is disposed opposite to the sliding member 41 and is hinged to the guiding member 52. The guiding member 52 is provided with a guide post 521 in the vertical direction and a hinge shaft 522 in the horizontal direction. The pressing member 51 is provided with a pressing plate. A reinforcing plate is provided on one side of the pressing plate close to the guiding member 52, and the reinforcing plate is hingedly connected to the hinge shaft 522. The pressing cylinder 53 is fixedly installed on the frame 2, and the piston rod of the pressing cylinder 53 is connected to the end of the guiding member 52 away from the pressing member 51. The pressing mechanism 5 can effectively press the mandrel 3 on the sliding member 41, which helps to reduce the slippage of the mandrel 3 rolling on the sliding member 41 during the wrapping of the carbon fiber raw material plate, so that the carbon fiber raw material plate will not shift or break away during the wrapping process, and improves the compactness of the wrapping of the carbon fiber tube. The guiding member 52 is vertically slidably connected to the frame 2, ensuring the stability and accuracy of the pressing action. The pressing member 51 is disposed opposite to the sliding member 41 and is hinged to the guiding member 52, so that the pressing force is evenly distributed on the outer surface of the mandrel 3 or the carbon fiber tube, avoiding damage caused by excessive local force. The pressing cylinder 53 is fixedly installed on the frame 2 and is connected to the end of the guiding member 52 away from the pressing member 51 through the piston rod, realizing fast and reliable pressing and releasing operations, and improving production efficiency.

[0030] Refer to Figure 1 and Figure 2 , elastic members 54 are respectively provided on both sides of the line of the hinge shaft 522 of the guiding member 52 and the pressing member 51. In the embodiment of the present application, the elastic member 54 is a spring. One end of the spring is tightly pressed against the guiding member 52, and the other end of the spring abuts against the pressing member 51. In other embodiments of the present application, the elastic member 54 can also be elastic rubber. The elastic member 54 is arranged between the pressing member 51 and the guiding member 52, so that the pressing member 51 can fit more closely on the mandrel 3 or the wrapped carbon fiber tube, thereby improving the compactness of the thickness of the carbon fiber tube during the wrapping process and avoiding the decline of the wrapping quality caused by uneven pressure. At the same time, the elastic member 54 can also enable the pressing member 51 to press the mandrel 3 with different diameters through elastic deformation, so as to realize the production of carbon fiber tubes with different diameters.

[0031] Refer to Figure 2, the coating device further includes a pressing mechanism 6. The pressing mechanism 6 includes a pressing table 61 fixed to one side of the workbench 1. On the side of the pressing table 61 close to the workbench 1, there is a female mold 611 adapted to the outer wall of the mandrel 3. On the side of the female mold 611 close to the workbench 1, there is a positioning assembly 62. The positioning assembly 62 includes a positioning plate 621 for positioning the mandrel 3 and the carbon fiber raw material plate, and a positioning cylinder 622 for driving the positioning plate 621 to lift. The positioning plate 621 is located on the side of the female mold 611 close to the workbench 1, and the positioning cylinder 622 is fixedly installed on the workbench 1. On the frame 2, there is a pressing assembly 63. The pressing assembly 63 includes a pressing plate 631 and a pressing cylinder 632. The pressing plate 631 is arranged opposite to the female mold 611, and the pressing cylinder 632 is fixedly installed on the frame 2; the pressing mechanism 6 can realize the pre-pasting of the carbon fiber raw material plate and the mandrel 3 before coating, ensuring the accurate position of the two during the coating process. The female mold 611 on the pressing table 61 is adapted to the outer wall of the mandrel 3, which can effectively prevent the mandrel 3 from shifting during the positioning process; at the same time, the positioning plate 621 in the positioning assembly 62 can precisely fix the carbon fiber raw material plate, ensuring its flatness and stability. The pressing plate 631 in the pressing assembly 63 is arranged opposite to the female mold 611, and can apply uniform pressure to the carbon fiber raw material plate before coating, making it closely adhere to the surface of the mandrel 3, thereby improving the coating quality.

[0032] Refer to Figure 3 , the coating device further includes a raw material plate feeding assembly 7 for feeding the carbon fiber raw material plate. The raw material plate feeding assembly 7 includes a raw material plate bin 71, a rotating shaft 72, a rotating cylinder 73, and at least one set of feeding cylinders 74 and suction cups 75. The feeding cylinders 74 and suction cups 75 can be set in multiple groups to meet the adsorption feeding needs when the length of the carbon fiber raw material plate is relatively long. The rotating shaft 72 is rotatably arranged on the side wall of the raw material plate bin 71. The rotating cylinder 73 is used to drive the rotating shaft 72 to rotate for feeding. The rotating cylinder 73 is hinged to the outer wall of the raw material plate bin 71, and the piston rod of the rotating cylinder 73 is hinged to the rotating arm at one end of the rotating shaft 72. The feeding cylinder 74 is fixedly installed on the rotating shaft 72 through a support plate on the rotating shaft 72, and the suction cup 75 is fixedly installed on the piston rod of the feeding cylinder 74. The external negative pressure air source connected to the suction cup 75 is used to adsorb and feed the carbon fiber raw material plate; the raw material plate feeding assembly 7 of the coating device can realize the automatic feeding process. The raw material plate bin 71 is used to store the carbon fiber raw material plate to ensure continuous supply; the rotating cylinder 73 drives the rotating shaft 72 to rotate, so that the carbon fiber raw material plates stored in the raw material plate bin 71 are sent to the feeding position one by one; the feeding cylinder 74 pushes the suction cup 75 to act, and the suction cup 75 adsorbs the carbon fiber raw material plate and accurately places it at the designated position; the combined action of these technical means improves the production efficiency, reduces manual operation, reduces the labor intensity, and ensures the stability and accuracy of the feeding process.

[0033] Refer to Figure 2, the coating device further includes a mandrel loading assembly 8 for loading the mandrel 3. The mandrel loading assembly 8 includes a mandrel bin 81, a lifting member 82, and a lifting cylinder 83. The bottom surface of the mandrel bin 81 is gradually inclined downward toward the workbench 1. The lowest part of the bottom wall of the mandrel bin 81 is provided with a through hole adapted to the lifting member 82. The lifting member 82 is used to lift the mandrel 3 for loading. The lifting member 82 passes through the through hole and is slidably connected to the inner wall of the mandrel bin 81. The upper end of the lifting member 82 is provided with an inclined surface. The inclined surface at the upper end of the lifting member 82 and the inner wall of the mandrel bin 81 form a V shape. In this way, the lifting member 82 can stably lift the mandrel 3 when lifting the mandrel 3. When the upper end of the lifting member 82 exceeds the inner wall of the mandrel bin 81, the mandrel 3 is fed along the guide plate of the mandrel bin 81 under the action of the inclined surface at the upper end of the lifting member 82. The lifting cylinder 83 is fixed on the outer wall of the mandrel bin 81, and the output shaft of the lifting cylinder 83 is connected to the end of the lifting member 82 away from the mandrel bin 81. It should be noted that the number of the lifting members 82 can be one or two, and the lifting cylinder 83 can also be one or two. The mandrel loading assembly 8 can realize the automatic loading process of the mandrel 3, improving the production efficiency. The design of the mandrel bin 81 enables multiple mandrels 3 to be stored orderly, avoiding the cumbersome operation of placing them one by one manually; the combined use of the lifting member 82 and the lifting cylinder 83 can accurately push a single mandrel 3 out of the mandrel bin 81 when needed, ensuring that each mandrel 3 can be accurately loaded into the subsequent station; the design of the through hole facilitates the setting of the lifting cylinder 83 outside the mandrel bin 81, which is beneficial to the safety and reliability of the operation of the lifting cylinder 83; the overall structure is compact, occupying a small space, and is convenient to be integrated into the existing production line, improving the overall automation level of the equipment.

[0034] Refer to Figure 1, the coating device further includes a conveying mechanism 9 for conveying the mandrel 3. The conveying mechanism 9 can receive the mandrel 3 at the loading position of the guide plate of the mandrel bin 81, convey the loaded mandrel 3 to the pressing table 61 for the pressing process, convey the pressed mandrel 3 to the sliding mechanism 4 for coating, and convey the coated mandrel 3 to the next process; the conveying mechanism 9 includes a conveying frame 91, a driving shaft 92, a driven shaft 93, two driving pulleys 94, two driven pulleys 95, a conveyor belt 96, a conveying motor 97 and a lifting drive assembly 98. The driving shaft 92 is rotatably arranged at one end of the conveying frame 91, and the driven shaft 93 is rotatably arranged at the other end of the conveying frame 91. The output shaft of the conveying motor 97 is in transmission connection with the driving shaft 92. The two driving pulleys 94 are respectively fixedly arranged at both ends of the driving shaft 92, and the two driven pulleys 95 are respectively arranged at both ends of the driven shaft 93. The driving pulley 94 and the driven pulley 95 on the same side are connected by the conveyor belt 96. It should be noted that the conveyor belt 96 can be a synchronous belt, and a limiting plate 961 for limiting the mandrel 3 is arranged on the outer periphery of the synchronous belt to ensure accurate positioning of the mandrel 3 during the conveying process. The conveying frame 91 is connected to the workbench 1 through the lifting drive assembly 98 and drives the conveying frame 91 to move up and down; the automatic conveying of the mandrel 3 is realized, the production efficiency and accuracy are improved. The conveying motor 97 drives the driving shaft 92 to rotate, driving the conveyor belt 96 to operate, realizing the stable transmission of the mandrel 3 on the conveying frame 91. The lifting drive assembly 98 enables the conveying frame 91 to move up and down along the guide rail 981, and can convey the mandrel 3 to working positions at different heights, increasing the applicability of the equipment.

[0035] Refer to Figure 4 , the lifting drive assembly 98 includes a guide rail 981 and a slider 982 for guiding the conveying frame 91. The guide rail 981 is slidably connected to the slider 982. It should be noted that the number of the guide rails 981 and the sliders 982 in the embodiment of the present application is 4 respectively. The 4 guide rails 981 are respectively fixedly located on the workbench 1 at both ends of the conveying frame 91, and the slider 982 is fixedly connected to the conveying frame 91. It further includes two lifting cylinders 983. The two lifting cylinders 983 are respectively installed on the workbench 1 at both ends of the conveying frame 91. One end of the lifting cylinder 983 is connected to the workbench 1, and the other end is connected to the conveying frame 91, which can realize the stable lifting of the conveying frame 91, ensure the accurate conveying of the mandrel 3 at different height positions, thereby improving the accuracy and efficiency of the carbon fiber tube coating process. The cooperation of the guide rail 981 and the slider 982 ensures the stable movement of the conveying frame 91 in the vertical direction and avoids the positioning error of the mandrel 3 caused by vibration or deviation; the setting of the lifting cylinder 983 makes the lifting and lowering actions of the conveying frame 91 faster and more reliable, improving the working speed and stability of the entire device.

[0036] The working principle of a carbon fiber tube coating device according to an embodiment of the present application is as follows: when the piston rod of the rotating cylinder 73 retracts, the suction cup 75 abuts against the carbon fiber raw material plate. The suction cup 75 is connected to a negative pressure air source to adsorb the carbon fiber raw material plate. When the piston rod of the rotating cylinder 73 extends, the suction cup 75 sucks the carbon fiber raw material plate away from the raw material plate bin 71. The piston rod of the feeding cylinder 74 extends to move the carbon fiber raw material plate to the female mold 611 of the pressing table 61. The piston rod of the positioning cylinder 622 is in the extended position, and the positioning plate 621 positions one side of the carbon fiber raw material plate. The piston rod of the lifting cylinder 83 extends, and the lifting member 82 pushes the mandrel 3 out of the mandrel bin 81. Under the guidance of the guide plate, the mandrel 3 falls into the two limit plates 961 of the conveyor belt 96. The conveyor motor 97 rotates to drive the rotation of the driving shaft 92. Driven by the driving pulley 94, the conveyor belt 96 moves to transport the mandrel 3 to the female mold 611 of the pressing table 61 and stops. At the same time, the mandrel 3 is positioned by the blocking of the positioning plate 621. The piston rod of the lifting cylinder 983 retracts, and the conveyor frame 91 descends to drop the mandrel 3 into the female mold 611. The piston rod of the pressing cylinder 632 extends, and the pressing plate 631 presses the mandrel 3 tightly. Under the action of the female mold 611, one side of the carbon fiber raw material plate adheres to the mandrel 3. Then, the piston rod of the pressing cylinder 632 retracts, and the piston rod of the lifting cylinder 983 extends. The conveyor frame 91 rises, and the pressed mandrel 3 is supported on the conveyor belt 96. The conveyor motor 97 rotates to transport the pressed mandrel 3 to the elastic plate 412. The piston rod of the lifting cylinder 983 retracts, and the pressed mandrel 3 is supported on the elastic plate 412. The piston rod of the pressing cylinder 53 extends, and the pressing member 51 presses tightly on the mandrel 3. The driving motor 42 rotates, and the transmission lead screw 43 drives the pressing member 51 to move, causing the mandrel 3 to roll on the elastic plate 412, and the carbon fiber plate wraps the mandrel 3. Subsequently, the piston rod of the pressing cylinder 53 retracts, and the piston rod of the lifting cylinder 983 extends. The wrapped mandrel 3 is supported on the conveyor belt 96. The conveyor motor 97 rotates to transport the wrapped mandrel 3 to the next process.

[0037] An embodiment of the present application also discloses a method for a carbon fiber tube coating device.

[0038] A carbon fiber tube coating method, based on the above-mentioned carbon fiber tube coating device, includes the following steps: S1. Transport the carbon fiber raw material plate to the pressing table 61 and position it, and transport the mandrel 3 to the female mold 611 of the pressing table 61 and position it; S2. Press the mandrel 3 tightly so that one side of the carbon fiber raw material plate adheres to the mandrel 3; S3. Transport the mandrel 3 adhered with the carbon fiber raw material plate to the sliding member 41; S4. Press the pressing member 51 tightly on the mandrel 3; S5. Drive the sliding member 41 to move so that the carbon fiber raw material plate wraps the mandrel 3 to form a carbon fiber tube; S6. Release the pressing member 51 and convey the mandrel 3 wrapped with the carbon fiber tube to the next process.

[0039] This carbon fiber tube wrapping method can achieve automated production, improve production efficiency and product quality. S1. By conveying the carbon fiber raw material plate to the pressing table 61 and performing precise positioning, the position accuracy during the subsequent wrapping process is ensured; S2. By pressing the mandrel 3, one side of the carbon fiber raw material plate is tightly adhered to the mandrel 3, ensuring the initial sticking and fixing of the mandrel 3 and the carbon fiber raw material plate; S3. Convey the mandrel 3 already adhered with the carbon fiber raw material plate to the sliding member 41 to prepare for the next wrapping process; S4. By using the pressing member 51 to press on the mandrel 3, the stability between the material and the mandrel 3 during the wrapping process is further enhanced; S5. Drive the sliding member 41 to move along the set path, so that the carbon fiber raw material plate is evenly and smoothly wrapped on the surface of the mandrel 3 to form a dense and high-quality carbon fiber tube; S6. After the wrapping is completed, release the pressing member 51 and transfer the finished mandrel 3 to the next process, realizing a continuous and efficient assembly line operation mode.

[0040] The above are all the preferred embodiments of the present application, and do not limit the protection scope of the present application in sequence. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A carbon fiber tube coating device, characterized in that It includes a workbench (1), a frame (2) fixedly connected to the workbench (1), and multiple mandrels (3) for supporting the inner wall of a carbon fiber tube when wrapping the carbon fiber tube. A sliding mechanism (4) for moving the mandrel (3) to wrap the carbon fiber tube is provided on the workbench (1). The sliding mechanism (4) includes a sliding member (41) slidably connected to the workbench (1), and the mandrel (3) is supported on the sliding member (41). A pressing mechanism (5) for pressing the mandrel (3) when wrapping the carbon fiber tube is provided on the frame (2).

2. The carbon fiber tube coating device according to claim 1, characterized in that, The sliding mechanism (4) further includes a driving motor (42) and a transmission lead screw (43). The driving motor (42) is fixedly installed on the workbench (1), the transmission lead screw (43) is rotatably arranged on the workbench (1), the output shaft of the driving motor (42) is fixedly connected to the transmission lead screw (43), and the side of the sliding member (41) close to the workbench (1) is in threaded transmission connection with the transmission lead screw (43).

3. The carbon fiber tube coating device according to claim 1, wherein The pressing mechanism (5) includes a pressing member (51), a guiding member (52), and a pressing air cylinder (53). The guiding member (52) is vertically slidably connected to the frame (2), the pressing member (51) is arranged opposite to the sliding member (41) and is hinged to the guiding member (52), the pressing air cylinder (53) is fixedly installed on the frame (2), and the piston rod of the pressing air cylinder (53) is connected to the end of the guiding member (52) far from the pressing member (51).

4. The carbon fiber tube coating device according to claim 3, characterized in that, Elastic members (54) are respectively provided on both sides of the line of the hinge axis (522) of the guiding member (52) and the pressing member (51). The elastic members (54) are springs. One end of the spring is in pressing contact with the guiding member (52), and the other end of the spring is in contact with the pressing member (51).

5. The carbon fiber tube coating device according to claim 1, characterized in that The wrapping device further includes a pressing mechanism (6). The pressing mechanism (6) includes a pressing table (61) fixed to one side of the workbench (1). A female die (611) adapted to the outer wall of the mandrel (3) is provided on the side of the pressing table (61) close to the workbench (1). A positioning assembly (62) is provided on the side of the female die (611) close to the workbench (1). The positioning assembly (62) includes a positioning plate (621) for positioning the mandrel (3) and a carbon fiber raw material plate. A pressing assembly (63) is provided on the frame (2). The pressing assembly (63) includes a pressing plate (631), and the pressing plate (631) is arranged opposite to the female die (611).

6. The carbon fiber tube coating device according to claim 5, wherein, The coating device further includes a raw material plate feeding assembly (7) for feeding the carbon fiber raw material plate. The raw material plate feeding assembly (7) includes a raw material plate bin (71), a rotating shaft (72) rotatably arranged on the raw material plate bin (71), a rotating cylinder (73) for driving the rotation of the rotating shaft (72) for feeding, a feeding cylinder (74) fixed on the rotating shaft (72), and a suction cup (75) connected to the piston rod of the feeding cylinder (74) for adsorbing the carbon fiber raw material plate.

7. The carbon fiber tube coating device according to claim 5, characterized in that, The coating device further includes a mandrel feeding assembly (8) for feeding the mandrel (3). The mandrel feeding assembly (8) includes a mandrel bin (81), a lifting member (82) for lifting the mandrel (3) for feeding. A through hole adapted to the lifting member (82) is provided on the bottom wall of the mandrel bin (81). The lifting member (82) passes through the through hole and is slidably connected to the inner wall of the mandrel bin (81). It further includes a lifting cylinder (83) fixed on the outer wall of the mandrel bin (81), and the output shaft of the lifting cylinder (83) is connected to one end of the lifting member (82) away from the mandrel bin (81).

8. The carbon fiber tube coating device according to claim 5, characterized in that, The coating device further includes a conveying mechanism (9) for conveying the mandrel (3). The conveying mechanism (9) includes a conveying frame (91), a driving shaft (92) rotatably arranged at one end of the conveying frame (91) and a driven shaft (93) at the other end, a conveying motor (97) for driving the rotation of the driving shaft (92). Active pulleys (94) are respectively arranged at both ends of the driving shaft (92), and driven pulleys (95) are respectively arranged at both ends of the driven shaft (93). The active pulley (94) and the driven pulley (95) on the same side are connected by a conveyor belt (96). The conveying frame (91) is connected to the workbench (1) through a lifting drive assembly (98).

9. The carbon fiber tube coating device according to claim 8, wherein, The lifting drive assembly (98) includes a guide rail (981) and a slider (982) for guiding the conveying frame (91). The guide rail (981) is slidably connected to the slider (982). The guide rail (981) is fixed on the workbench (1), and the slider (982) is fixedly connected to the conveying frame (91). It further includes a lifting cylinder (983), one end of the lifting cylinder (983) is connected to the workbench (1), and the other end is connected to the conveying frame (91).

10. A method for coating a carbon fiber tube, based on a carbon fiber tube coating device according to any one of claims 5 to 9, characterized in that, It includes the following steps: S1. Convey the carbon fiber raw material plate to the pressing table (61) and position it, and convey the mandrel (3) to the female die (611) of the pressing table (61) and position it; S2. Clamp the mandrel (3) so that one side of the carbon fiber raw material plate adheres to the mandrel (3); S3. Convey the mandrel (3) adhered with the carbon fiber raw material plate to the sliding member (41); S4. Press the pressing member (51) against the mandrel (3); S5. Drive the sliding member (41) to move so that the carbon fiber raw material plate wraps the mandrel (3) to form a carbon fiber tube; S6. Release the pressing member (51), and convey the mandrel (3) wrapped with the carbon fiber tube to the next process.

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