Carbon fiber door frame hot press molding device and method

Abstract

The invention discloses a carbon fiber door frame hot-press forming device and method, and relates to the technical field of carbon fiber product hot-press forming, the forming device comprises a hot-press tank body, a moving trolley, a placing frame, a hanging beam, a vacuumizing suction port, a vacuum detection port, a workpiece temperature detection plug and a module temperature detection plug, the device realizes quick loading and positioning of the mold through the optimally designed suspension part, the roller assembly and the driving mechanism, and ensures that the hot pressing process is stable and efficient in combination with the vacuum pump, the heating mechanism and the pressurizing mechanism. In addition, the invention provides a matched hot press molding method which covers the whole process from mold assembly to final mold removal. The device achieves the effects of improving the production efficiency, ensuring the consistency of the product quality and remarkably reducing the operation complexity.

Description

Technical Field

[0001] The present application relates to the technical field of hot pressing and forming carbon fiber products, and in particular to a device and method for hot pressing and forming a carbon fiber door frame. Background Art

[0002] Carbon fiber, due to its lightweight and high-strength properties, is widely used in the aerospace and automotive industries. In particular, in the architectural and decoration industries, carbon fiber door frames have become an emerging high-end product choice. However, with growing market demand, efficiently manufacturing high-quality carbon fiber door frames has become a key challenge. Traditional production processes typically rely on manual operation or simple machine-assisted tools to complete the molding process, which is not only time-consuming and labor-intensive, but also difficult to meet the needs of large-scale production.

[0003] The methods currently commonly used in the industry mainly include manual stacking method, vacuum bag hot pressing method, etc. For the vacuum bag hot pressing method, the common implementation plan is to place the prepreg on the mold and then cover it with a vacuum bag for vacuum treatment, and then place it in a heating furnace or a special autoclave to complete the curing process. Specifically, these methods generally use a fixed workbench with a single large fixture to load a single component; or support multiple semi-finished products through an open frame structure for synchronous operation. Although the former has higher precision but low efficiency, the latter has increased the output per unit time but is prone to problems such as inaccurate positioning and uneven force.

[0004] The above-mentioned traditional methods generally have the following shortcomings: when faced with the needs of mass production, due to the lack of effective integrated design between the various components, there are many manual intervention links in the entire process, especially when it comes to multi-point data collection (such as temperature monitoring) and the establishment of a complex vacuum environment, which often takes a lot of time for early preparation and later adjustments. In addition, in the actual operation process, it was found that the existing devices are difficult to ensure sufficient space utilization while taking into account the convenient operation experience, especially when it is necessary to frequently change product lines of different specifications. Therefore, in order to address these problems, it is urgent to develop a new type of carbon fiber door frame hot pressing molding device to overcome the efficiency bottleneck existing under the existing technical conditions. Summary of the Invention

[0005] In order to help solve the technical problem of carbon fiber door frame production efficiency, the present application provides a carbon fiber door frame hot pressing forming device and method.

[0006] In a first aspect, the present application provides a carbon fiber door frame hot pressing forming device, which adopts the following technical solution: A carbon fiber door frame hot press forming device comprises an autoclave body, a mobile trolley capable of moving within the autoclave body, a placement rack provided on the mobile trolley, a plurality of molds for door frame forming suspended on the placement rack, a plurality of groups of hanging beams, two of which are provided on the placement rack, a hanging member capable of hanging on the same group of hanging beams, a vacuum bag wrapped around the outside of the mold, the vacuum bag opening facing the hanging member and being sealed with the mold, a plurality of vacuum suction ports, a plurality of vacuum detection ports, a plurality of workpiece temperature detection plugs and a plurality of module temperature detection plugs provided within the autoclave body, the hanging member of each mold being provided with a corresponding vacuum suction port, a vacuum detection port, a workpiece temperature detection port and a module temperature detection port in sequence, the vacuum suction port and the vacuum detection port being connected to the vacuum bag via a vacuum channel provided on the mold, the workpiece temperature detection port being connected to a workpiece temperature sensor for detecting the workpiece temperature, and the module temperature detection port being connected to a module temperature sensor for detecting the module temperature.

[0007] By adopting the above technical solution, multiple molds are efficiently mounted and packaged within the autoclave, significantly improving space utilization. Module and workpiece temperature sensors are pre-installed during mold and workpiece assembly. A vacuum bag is then placed over the mold and sealed. The mold is attached to the mounting beam via a hanger, preventing direct contact between the vacuum bag and other components outside the mold, effectively protecting the bag's integrity and seal. The mobile cart enters the autoclave, and the various sockets on the hanger facilitate the implementation of functions such as vacuum extraction, vacuum testing, and temperature monitoring. This significantly simplifies the operational process and improves the overall production efficiency and reliability of the carbon fiber door frame hot press molding process.

[0008] Optionally, the hanging member includes a connecting plate fixedly connected to the mold, and a support plate fixedly connected to one end of the connecting plate away from the mold, and the support plate can be suspended and supported on the same group of hanging beams. The end of the connecting plate close to the opening of the hot press tank body is provided with a vacuum socket, a vacuum detection socket, a workpiece temperature detection socket and a module temperature detection socket. The connecting plate is provided with a connecting air duct connected to the vacuum channel, and is also provided with a wiring groove for installing and connecting a workpiece temperature sensor and a module temperature sensor.

[0009] By adopting the above technical solution, the hanging part is composed of a connecting plate and a support plate, wherein the connecting plate is fixedly connected to the mold, and the support plate is used to be mounted on the same set of hanging beams, so that the mold can be stably suspended on the placement rack, so that the vacuum bag wrapped around the outside of the mold does not directly contact other adjacent parts, which can effectively protect the integrity and sealing of the vacuum bag. The side of the connecting plate close to the opening of the autoclave body is arranged with a vacuum socket, a vacuum detection socket, a workpiece temperature detection socket and a module temperature detection socket, which are convenient for quick docking with the corresponding interfaces in the autoclave body, thereby improving operational efficiency. In addition, the connecting air duct on the connecting plate ensures the smooth flow of the vacuum channel, and the wiring groove provides an orderly routing space for the temperature sensor circuit, further improving the overall performance and reliability of the device. These designs work together to effectively enhance the efficiency and stability of the preparation work during the hot pressing molding process of the carbon fiber door frame.

[0010] Optionally, the mold includes a first bottom template, a second bottom template, a first frame template and a second frame template, each of which is two in number. The two second bottom templates are spaced side by side, the two first bottom templates are detachably mounted on the two ends of the two second templates, the two first frame templates are detachably fixed on the first bottom template, the two second frame templates are respectively connected to the two ends of the first frame template and are detachably fixed on the first bottom template and the second bottom template, one of the first frame templates is fixedly connected to the connecting plate, and the first frame template connected to the connecting plate is provided with a mounting groove connected to the wiring groove for installing the module temperature sensor and the vacuum channel.

[0011] By adopting the above technical solution, the mold is composed of a first bottom template, a second bottom template, a first frame template, and a second frame template that are detachably assembled to form a closed frame structure, and one of the first frame templates is fixedly connected to the connecting plate. This design makes mold assembly more flexible and convenient, facilitating rapid mold removal and assembly during production. It also simplifies the connection between the mold and components such as the vacuum suction port and vacuum detection port, effectively improving the overall efficiency of the carbon fiber door frame hot press molding process.

[0012] Optionally, multiple roller assemblies are rotatably arranged on the inner side of the same group of hanging beams, and the roller assemblies include rolling wheels, bearings and fixed shafts fixedly connected to the hanging beams. The support plate can be suspended and supported on two rows of the rolling wheels, and the connecting plate can move between the two rows of the rolling wheels.

[0013] By adopting the above technical solution, the mounting beam is designed as multiple roller assemblies, each consisting of several rolling wheels, bearings, and fixed shafts. This allows the support plate to slide smoothly onto the two rows of rolling wheels, while the connecting plate can pass between the two rows of rolling wheels. This structure significantly reduces the friction resistance of the hanging parts mounted on the mounting beam, reduces the labor intensity of the operator, and improves the convenience and efficiency of mold installation. Specifically, the supporting role of the rolling wheels prevents direct contact between the support plate and other fixed components on the mounting frame, thereby ensuring a smooth mounting process and further optimizing the overall process of hot pressing the carbon fiber door frame.

[0014] Optionally, the mobile trolley includes a frame, the frame is fixedly connected to the placement rack, two axles are arranged parallel to the moving direction on the side of the frame away from the placement rack, wheels are rotatably mounted at both ends of the axles, a track is provided on the inner wall of the autoclave body that is adapted to the wheel track, and a driving mechanism is provided on the outside of the autoclave body to drive the mobile trolley to enter and exit the autoclave body.

[0015] By adopting the above technical solution, the design of the mobile trolley ensures that the placement rack is firmly mounted on the top of the frame, ensuring the stability of the mounted mold. The two parallel axles at the bottom and the wheels at both ends match the track system on the inner wall of the autoclave, ensuring the smooth movement of the mobile trolley within the autoclave. This reduces vibration and deviation during operation, improves operational safety and reliability, and simplifies the operation process of entering and exiting the autoclave, improving work efficiency.

[0016] Optionally, the driving mechanism includes a driving electric cylinder, a movable frame connected to the telescopic shaft of the driving electric cylinder, a hanging piece rotatably set on the movable frame for hanging the axle, the hanging piece is provided with a hanging groove adapted to the axle, and also includes an air spring that drives the hanging piece to hang in or out of the axle in the hanging groove, one end of the air spring is fixedly connected to the movable frame, and the other end is connected to the hanging piece.

[0017] The above technical solution makes the entry and exit of the mobile cart more convenient and efficient. Specifically, the electric cylinder drives the mobile frame via a telescopic shaft, and the air spring allows the attachment to quickly nest and detach between the attachment slot and the axle. This effectively improves the efficiency of the mobile cart entering and exiting the autoclave, reduces manual intervention, and further optimizes the overall process of hot press molding of carbon fiber door frames.

[0018] Optionally, the hot pressing forming device also includes the vacuum pump installed outside the autoclave body, a vacuum pipe connected to the vacuum pump exhaust port, and multiple vacuum branch pipes connected to the vacuum pipe. A first electromagnetic reversing valve is provided on the vacuum branch pipe. One end of the vacuum branch pipe away from the vacuum pipe passes through the side wall of the autoclave body and is connected to the vacuum suction port. The vacuum detection port passes through the side wall of the autoclave body through a vacuum detection tube. A vacuum sensor for detecting the vacuum degree is installed at one end of the vacuum detection tube located outside the autoclave body.

[0019] By adopting the above technical solution, adding a vacuum pump and its supporting vacuum pipes and multiple vacuum branches with a first electromagnetic reversing valve, each vacuum suction port can be independently controlled. It can be connected to the vacuum pump for vacuum operation, or connected to the atmosphere or closed, greatly improving the flexibility and accuracy of regulating the vacuum environment in each mold. At the same time, with the help of a vacuum detection tube extending outside the autoclave and connected to a vacuum sensor, the vacuum state inside the mold can be monitored in real time and fed back to the electrical control system, thereby achieving efficient and automated management of the entire hot pressing process. This not only ensures that the carbon fiber door frame always maintains stable vacuum conditions during molding, but also effectively promotes the improvement of product quality and the optimization of production processes.

[0020] Optionally, the hot pressing forming device further includes a heating mechanism for heating the autoclave body, the heating mechanism including an electric heater arranged inside the autoclave body near the closed end, a fan installed on the closed end of the autoclave body, and a motor for driving the fan to rotate, wherein the motor is fixedly mounted on the outer wall of the closed end of the autoclave body.

[0021] By adopting this technical solution, the electric heater, positioned near the closed end of the autoclave, helps concentrate heat and evenly conduct it to the open end. The fan, positioned closely against the inside of the closed end, enhances hot air circulation and ensures consistent temperature within the autoclave, thereby improving the quality and stability of the carbon fiber door frame hot press molding process. The motor, fixed to the outer wall of the closed end, effectively mitigates the effects of high temperatures on motor performance and simplifies equipment maintenance.

[0022] Optionally, the hot pressing forming device further includes a pressurizing mechanism for pressurizing the interior of the autoclave body, the pressurizing mechanism including an air compressor, the air outlet of the air compressor being connected to the interior of the autoclave body through a pressure pipe, a second electromagnetic reversing valve being provided on the pressure pipe, and a third electromagnetic reversing valve for exhausting being further provided on the autoclave body.

[0023] By adopting the above-mentioned technical solution, the setting of the pressurizing mechanism enables the pressure inside the autoclave to be precisely controlled. Specifically, the high-pressure gas generated by the air compressor is transported into the autoclave via a pressure pipe. The second solenoid reversing valve is responsible for controlling the input of the pressurized gas, while the third solenoid reversing valve is used for exhaust operations. This design not only improves the pressure stability during the hot press molding process of the carbon fiber door frame, but also enhances the degree of automation of the entire process, thereby ensuring the high quality and consistency of the product. Among them, the additional pressurizing mechanism ensures that the pressure conditions in the hot press environment meet the process requirements, significantly optimizing the molding effect of the carbon fiber door frame.

[0024] In a second aspect, the present application provides a carbon fiber door frame hot pressing forming method, which adopts the following technical solution: A carbon fiber door frame hot press forming method, based on the above-mentioned carbon fiber door frame hot press forming device, comprises the following steps: S1. Mold assembly: cleaning the concave mold portion of the mold for molding and assembling the mold; S2. Die laying: laying a carbon fiber raw material layer in the die portion of the mold, and the four corners of the carbon fiber raw material layer are overlapped; S3. Mold packaging: Attach the workpiece temperature sensor to the surface of the carbon fiber raw material layer. Wrap the four sides of the mold with a porous anti-stick film and breathable felt. Then, place the mold in a vacuum bag. The opening of the vacuum bag is sealed and bonded to the end of the suspension member closest to the mold. S4 mold hanging: the mold of the hanging member is pushed into the hanging beam to hang multiple molds; S5. Docking into the tank: Push the mobile cart into the autoclave body, and connect the vacuum socket, vacuum detection socket, workpiece temperature detection socket and module temperature detection socket on each mold to the vacuum suction port, vacuum detection port, workpiece temperature detection plug and module temperature detection plug in the autoclave body, respectively; S6. Seal detection: Detect the sealing state of the mold and the vacuum bag. The negative pressure value in the vacuum bag reaches the preset negative pressure value range; S7 hot pressing curing: Close the autoclave door, set the workpiece hot pressing parameters, and start the hot pressing equipment; S8. Unpacking the autoclave and removing the mold: After the hot pressing process is completed, the temperature inside the autoclave drops below 90°C, the pressure inside the autoclave is released, the sealing door is opened, the mobile cart is pulled out of the autoclave, and the mold is removed to remove the door frame workpiece, while preparing for the next cycle of hot pressing production.

[0025] By adopting the above technical solution, a carbon fiber door frame hot pressing molding device including an autoclave, a mobile trolley and its placement frame, and a mold hanging design is used to achieve efficient operation of the entire process from mold assembly to final demolding and taking out the finished product. Specifically: the use of hanging parts with vacuum sockets, vacuum detection sockets and other designs ensures a quick interface connection between the mold and the hot pressing environment, significantly improving the efficiency of preparation work; the design of the mobile trolley with a rail system and a drive mechanism greatly facilitates the operation process of the trolley loaded with multiple molds entering and exiting the autoclave, reducing the degree of manual intervention; equipped with a complete vacuum pump and related pipeline network to support precise control of the vacuum state in the chamber, ensuring stable and reliable product quality; the heating mechanism applies heat evenly by convection, which promotes energy utilization and ensures product performance consistency; the automated pressure increase and decrease mechanism allows for precise management of internal pressure conditions, enhancing the safety and controllability of the entire process.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Multiple molds are mounted side by side on the mounting beams of the rack via hanging parts, significantly improving the space utilization of the autoclave and reducing manual intervention, thereby significantly improving the overall efficiency of door frame production. 2. The suspension design isolates the vacuum bag from adjacent components, effectively protecting its integrity and sealing. The vacuum pumping and detection ports are centrally located on the connecting plate near the opening, facilitating quick docking with interfaces within the autoclave and further optimizing the preparation workflow. 3. Combining modular mold design with automated control, precise monitoring and regulation of temperature, pressure, and vacuum are achieved, ensuring a stable and reliable hot-pressing process for carbon fiber door frames and effectively improving product quality consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of a carbon fiber door frame hot pressing forming device disclosed in this application.

[0028] Figure 2 This is a front view of a carbon fiber door frame hot pressing forming device disclosed in this application.

[0029] Figure 3 This is a schematic diagram of the mold structure disclosed in this application.

[0030] Figure 4 This is a partial cross-sectional view of the mold disclosed in this application.

[0031] Figure 5 This is a schematic structural diagram of the mobile trolley and placement rack disclosed in this application from a top perspective.

[0032] Figure 6This is a schematic structural diagram of the bottom perspective of the mobile cart and placement rack disclosed in this application.

[0033] Figure 7 for Figure 1 A partial enlarged view of the middle I position.

[0034] Figure 8 For the Figure 2 Sectional view along line AA.

[0035] Description of reference numerals: 1. Autoclave; 11. Vacuum suction port; 12. Vacuum detection port; 13. Workpiece temperature detection plug; 14. Module temperature detection plug; 15. Track; 16. Guide plate; 161. Support plate; 17. Insulation layer; 18. Sealing door; 19. Bogie; 191. Turning cylinder; 192. Rotating cylinder; 2. Mobile trolley; 21. Frame; 22. Axle; 23. Wheel; 3. Placement rack; 31. Hanging beam; 32. Roller assembly; 321. Rolling wheel; 322. Bearing; 323. Fixed shaft; 4. Mold; 41. Suspension piece; 411. Connecting plate; 4111. Airway connection; 4112. Wiring trough; 412. Support plate; 413. Vacuum socket; 414. Vacuum detection socket; 415. Workpiece temperature detection socket; 416. Module temperature detection socket; 417. Workpiece Temperature sensor; 418, module temperature sensor; 42, first bottom template; 43, second bottom template; 44, first frame template; 441, vacuum channel; 442, mounting groove; 45, second frame template; 5, vacuum bag; 6, driving mechanism; 61, driving electric cylinder; 62, movable frame; 63, hanging part; 631, hanging groove; 64, air spring; 71, vacuum pump; 72, vacuum pipe; 73, vacuum branch pipe; 74, first electromagnetic reversing valve; 75, vacuum detection tube; 76, vacuum sensor; 77, central controller; 8, heating mechanism; 81, electric heater; 82, fan; 83, motor; 84, cooling water pipeline; 9, pressurizing mechanism; 91, air compressor; 92, pressure pipe; 93, second electromagnetic reversing valve; 94, third electromagnetic reversing valve; 101, movable guide rail; 102, driving cylinder. DETAILED DESCRIPTION

[0036] The following combination Figures 1 to 8 This application is described in further detail.

[0037] The embodiment of the present application discloses a carbon fiber door frame hot pressing forming device.

[0038] A carbon fiber door frame hot pressing forming device. Figures 1 to 4, including an autoclave body 1 and a mobile trolley 2, the autoclave body 1 is provided with connected tracks 15 inside and outside, the mobile trolley 2 can move inside and outside the autoclave body 1, a placement rack 3 is provided on the mobile trolley 2, a plurality of molds 4 for door frame molding are hung on the placement rack 3, a plurality of groups of hanging beams 31 are provided on the placement rack 3, the molds 4 are provided with hanging parts 41 that can be hung on the same group of hanging beams 31, the molds 4 are wrapped with a vacuum bag 5, the vacuum bag 5 opening is facing the hanging part 41 and is sealed with the mold 4, the vacuum bag 5 The opening can be glued to the side of the mold 4 near the suspension member 41 by adhesive tape. The autoclave body 1 is provided with multiple vacuum suction ports 11, multiple vacuum detection ports 12, multiple workpiece temperature detection plugs 13 and multiple module temperature detection plugs 14. It should be noted that the vacuum suction port 11 and the vacuum detection port 12 are connected to a plastic hose with a steel wire skeleton. The tail end of the plastic hose is provided with a quick-release connector for convenient docking with the corresponding socket on the mold 4. The workpiece temperature detection plug 13 and the module temperature detection plug 14 are both connected to a durable The high-temperature wire is conveniently connected to the corresponding temperature detection socket on the mold 4; each of the hanging parts 41 of the mold 4 is provided with a corresponding vacuum socket 413, a vacuum detection socket 414, a workpiece temperature detection socket 415 and a module temperature detection socket 416. The vacuum socket 413 and the vacuum detection socket 414 are connected to the vacuum bag 5 through the vacuum channel 441 provided on the mold 4. The workpiece temperature detection socket 415 is connected to the workpiece temperature sensor 417 for detecting the workpiece temperature. The module temperature detection socket 41 6 is connected to the module temperature sensor 418 for detecting the module temperature; the hot pressing molding device realizes the efficient mounting and packaging of multiple molds 4 within the hot press tank body 1, significantly improving space utilization. When the mold 4 is assembled with the workpiece, the module temperature sensor 418 and the workpiece temperature sensor 417 are pre-installed. Then, the vacuum bag 5 is placed on the mold 4 and sealed. The mold 4 is hung on the hanging beam 31 via the hanging member 41, avoiding direct contact between the vacuum bag 5 outside the mold 4 and other components, effectively protecting the integrity and sealing of the vacuum bag 5. The mobile cart 2 enters the hot press tank body 1. The multiple socket designs on the hanging member 41 enable convenient implementation of functions such as vacuum extraction, vacuum detection, and temperature monitoring, greatly simplifying the operating process and improving the overall production efficiency and reliability of the hot press molding of carbon fiber door frames.

[0039] Reference Figure 3 and Figure 4The hanging part 41 includes a connecting plate 411 fixedly connected to the mold 4, and a support plate 412 fixedly connected to the side of the connecting plate 411 away from the mold 4. The support plate 412 can be suspended and supported on the same set of hanging beams 31. The end of the connecting plate 411 close to the opening of the autoclave body 1 is provided with a vacuum socket 413, a vacuum detection socket 414, a workpiece temperature detection socket 415 and a module temperature detection socket 416. The connecting plate 411 is provided with a connecting air duct 4111 connected to the vacuum channel 441, and is also provided with a wiring groove 4112 for installing and connecting the workpiece temperature sensor 417 and the module temperature sensor 418; it should be noted that the module temperature sensor 418 and the wiring groove 4112 can be sealed with insulating glue after being installed in place, and the workpiece temperature sensor 417 and a part connected to the workpiece temperature sensor 417 are sealed. The branch wires can extend out of the wiring groove 4112, making it easier to place the workpiece temperature sensor 417 against the raw material layer and fix it after laying the carbon fiber raw material layer. The hanging member 41 is composed of a connecting plate 411 and a support plate 412. The connecting plate 411 is fixedly connected to the mold 4, and the support plate 412 is used to mount on the hanging beam 31, so that the mold 4 can be stably suspended on the placement rack 3, so that the vacuum bag 5 wrapped around the outside of the mold 4 does not directly contact other adjacent components, which can effectively protect the integrity and sealing of the vacuum bag 5. The side of the connecting plate 411 near the opening of the autoclave body 1 is equipped with a vacuum socket 413, a vacuum detection socket 414, a workpiece temperature detection socket 415, and a module temperature detection socket 416, which facilitates quick docking with the corresponding interfaces in the autoclave body 1, improving operational efficiency. In addition, the connecting airway 4111 on the connecting plate 411 ensures the unobstructed vacuum channel 441, and the wiring groove 4112 provides an orderly routing space for the temperature sensor circuit, further improving the overall performance and reliability of the device. These designs work together to effectively enhance the preparation efficiency and stability during the hot press molding process of the carbon fiber door frame.

[0040] Reference Figure 3 and Figure 4The mold 4 includes a first bottom template 42, a second bottom template 43, a first frame template 44 and a second frame template 45, each of which is two in number. The two second bottom templates 43 are arranged side by side, and the two first bottom templates 42 are detachably mounted on the two ends of the two second bottom templates 43. The two first frame templates 44 are detachably fixed on the first bottom template 42. The two second frame templates 45 are respectively connected to the two ends of the first frame template 44 and are detachably fixed on the first bottom template 42 and the second bottom template 43. One of the first frame templates 44 is fixedly connected to the connecting plate 411, and the first frame template 44 connected to the connecting plate 411 is provided with a wiring groove 4112 and a vacuum channel 441; the mold 4 is detachably assembled by the first bottom template 42, the second bottom template 43, the first frame template 44 and the second frame template 45 to form a closed frame structure, and one of the first frame templates 44 is fixedly connected to the connecting plate 411. This design makes the assembly of the mold 4 more flexible and convenient, and facilitates the rapid demolding and rapid assembly of the mold 4 during the production process. It also simplifies the connection operation between the mold 4 and components such as the vacuum suction port 11 and the vacuum detection port 12, effectively improving the overall efficiency of the hot pressing molding of the carbon fiber door frame.

[0041] Reference Figure 5 and Figure 6 Multiple roller assemblies 32 are rotatably mounted on the inner side of each set of mounting beams 31. The roller assemblies 32 include rolling wheels 321, bearings 322, and fixed shafts 323 fixedly connected to the mounting beams 31. The support plate 412 can be suspended and supported on two rows of rolling wheels 321, and the connecting plate 411 can move between the two rows of rolling wheels 321. The mounting beams 31 are designed as multiple sets of roller assemblies 32, each set including several rolling wheels 321, bearings 322, and fixed shafts 323. This allows the support plate 412 to slide smoothly on the two rows of rolling wheels 321, while the connecting plate 411 can pass between the two rows of rolling wheels 321. This structure significantly reduces the frictional resistance of the suspension member 41 mounted on the mounting beam 31, reduces the labor intensity of the operator, and improves the convenience and efficiency of mold 4 installation. Specifically, the supporting function of the rolling wheel 321 avoids direct contact between the support plate 412 and other fixed components on the placement rack 3, thereby ensuring a smooth hanging process and further optimizing the overall process of hot pressing the carbon fiber door frame.

[0042] Reference Figure 5 and Figure 6The mobile trolley 2 includes a frame 21, to which the placement rack 3 is fixedly connected. Two axles 22 are arranged parallel to the moving direction on the side of the frame 21 away from the placement rack 3. Wheels 23 are rotatably mounted on both ends of the axles 22. A track 15 matching the wheelbase of the wheels 23 is provided on the inner wall of the autoclave body 1. A driving mechanism 6 for driving the mobile trolley 2 in and out of the autoclave body 1 is provided on the outside of the autoclave body 1. The design of the mobile trolley 2 enables the placement rack 3 to be firmly set on the top of the frame 21, ensuring the stability of the mold 4 after mounting. The two axles 22 distributed in parallel at the bottom and the wheels 23 assembled at both ends match the track 15 system on the inner wall of the autoclave body 1, realizing the smooth movement of the mobile trolley 2 in the autoclave body 1, reducing vibration and deviation during operation, improving the safety and reliability of operation, and simplifying the operation process of entering and exiting the tank, thereby improving work efficiency.

[0043] Reference Figure 1 The driving mechanism 6 includes a driving electric cylinder 61, a mobile frame 62 connected to the telescopic shaft of the driving electric cylinder 61, a hooking member 63 rotatably arranged on the mobile frame 62 for hooking the axle 22, the hooking member 63 is provided with a hooking groove 631 adapted to the axle 22, and also includes an air spring 64 for hooking the hooking groove 631 of the driving hooking member 63 into or out of the axle 22, one end of the air spring 64 is fixedly connected to the mobile frame 62, and the other end is connected to the hooking member 63; the entry and exit operations of the mobile trolley 2 are more convenient and efficient. Specifically, the driving electric cylinder 61 can drive the mobile frame 62 to move through the telescopic shaft, and the hooking member 63 can realize the rapid nesting or separation of the hooking groove 631 and the axle 22 under the action of the air spring 64, which effectively improves the working efficiency of the mobile trolley 2 entering and exiting the autoclave 1, reduces manual intervention, and further optimizes the overall process of hot pressing the carbon fiber door frame.

[0044] Reference Figure 1 、 Figure 2 and Figure 7The hot pressing forming device also includes a vacuum pump 71 installed outside the autoclave body 1, a vacuum pipe 72 connected to the exhaust port of the vacuum pump 71, and multiple vacuum branch pipes 73 connected to the vacuum pipe 72. A first electromagnetic reversing valve 74 is provided on the vacuum branch pipe 73. The end of the vacuum branch pipe 73 away from the vacuum pipe 72 passes through the side wall of the autoclave body 1 and is connected to the vacuum suction port 11. The vacuum detection port 12 passes through the side wall of the autoclave body 1 through a vacuum detection tube 75. The vacuum detection tube 75 is located at one end outside the autoclave body 1 and is equipped with a vacuum sensor 76 for detecting the vacuum degree. The addition of the vacuum pump 71 and its supporting vacuum pipe 72 and multiple vacuum branch pipes 73 with the first electromagnetic reversing valve 74 enables each vacuum suction port 11 to be independently controlled. It can choose to be connected to the vacuum pump 71 for exhaust operation, or it can choose to be connected to the atmosphere or closed, which greatly improves the flexibility and accuracy of regulating the vacuum environment in each mold 4. At the same time, with the help of a vacuum detection tube 75 extending outside the autoclave body 1 and connected to a vacuum sensor 76, the vacuum state inside the mold 4 can be monitored in real time and fed back to the central controller 77 of the electrical control system. Each vacuum detection port 12 is connected to a vacuum sensor 76 outside the autoclave body 1 through an independent vacuum detection tube 75. The signal output ends of all vacuum sensors 76 are electrically connected to the central controller 77, transmitting vacuum data in real time, thereby achieving efficient and automated management of the entire hot pressing process. This not only ensures that the carbon fiber door frame always maintains stable vacuum conditions during the molding process, but also effectively promotes the improvement of product quality and the optimization of production processes.

[0045] Reference Figure 8The hot pressing forming device also includes a heating mechanism 8 for heating the inside of the autoclave body 1. The heating mechanism 8 includes an electric heater 81 arranged near the closed end of the autoclave body 1, a fan 82 installed on the closed end of the autoclave body 1, and a motor 83 for driving the fan 82 to rotate. The motor 83 is fixedly installed on the outer wall of the closed end of the autoclave body 1; the electric heater 81 is arranged near the closed end of the autoclave body 1 to help concentrate heat and conduct it evenly to the open end, and the fan 82 is close to the inside of the closed end to enhance the circulation of hot air. The autoclave at the end of the electric heater 81 away from the fan 82 is A plurality of guide plates 16 are provided on the inner wall of the autoclave body 1, and the guide plates 16 are welded and fixed to the inner wall of the autoclave body 1 through a support plate 161 arranged axially along the autoclave body 1. The guide plates 16 evenly guide part of the hot air flow blown by the fan 82 to the right end of the mold 4, and the other part evenly guides the left end of the mold 4. At the same time, an annular insulation layer 17 is provided on the outer wall of the autoclave body 1. The insulation layer reduces the heat loss inside the autoclave body 1, ensures that the mold 4 is heated evenly in the circumferential direction, and ensures the temperature consistency inside the autoclave body 1, thereby improving the quality stability of the hot pressing molding of the carbon fiber door frame. The design of fixing the motor 83 to the outer wall of the closed end effectively avoids the influence of high temperature on the performance of the motor 83, and simplifies the equipment maintenance operation; It should be noted that the hot pressing forming device also includes a cooling mechanism, the cooling mechanism includes a cooling water pump and a cooling water pipeline 84 spaced apart from the electric heater 81, the electric heater 81 and the cooling water pipeline 84 are respectively fixed to the inner wall of the hot press tank body 1 through a support plate, the water cooling pipe of the cooling water pipeline 84 is spaced apart from the heating pipe of the electric heater 81, and the resistance wire for heating is sealed and insulated from the heating pipe. A small amount of condensed water generated due to the temperature difference flows into the autoclave body 1 through the outer shell of the heating tube, which can effectively prevent the resistance wire from invading the condensed water and causing a short circuit. The cooling water circulation system is independently arranged on the outside of the autoclave body 1. When the electric heater 81 heats the autoclave body 1, the water in the cooling water pipe 84 is discharged in advance. When the autoclave body 1 needs to be cooled, the cooling water pipe 84 and the cooling water pump are opened, and the cooling circulating water enters the cooling water pipe 84 to cool the electric heater 81, which helps to improve the efficiency of cooling the autoclave body 1.

[0046] Reference Figure 1The hot pressing forming device also includes a pressurizing mechanism 9 for pressurizing the interior of the autoclave body 1. The pressurizing mechanism 9 includes an air compressor 91. The air outlet of the air compressor 91 is connected to the interior of the autoclave body 1 through a pressure pipe 92. A second electromagnetic reversing valve 93 is provided on the pressure pipe 92. The autoclave body 1 is also provided with a third electromagnetic reversing valve 94 for exhaust. The setting of the pressurizing mechanism 9 enables the pressure inside the autoclave body 1 to be precisely controlled. Specifically, the high-pressure gas generated by the air compressor 91 is transported to the autoclave body 1 via the pressure pipe 92. The second electromagnetic reversing valve 93 is responsible for controlling the input of the pressurized gas, while the third electromagnetic reversing valve 94 is used for exhaust operations. This design not only improves the pressure stability during the hot pressing forming process of the carbon fiber door frame, but also enhances the degree of automation of the entire process, thereby ensuring the high quality and consistency of the product. Among them, the added pressurizing mechanism 9 ensures that the pressure conditions in the hot pressing environment meet the process requirements and significantly optimizes the molding effect of the carbon fiber door frame. It should be noted that the opening end of the hot press tank body 1 is rotatably provided with a bogie 19, and the sealing door 18 is rotatably set on the bogie 19. The sealing door 18 drives the bogie 19 to rotate by the flip cylinder 191 to open or close the sealing door 18. A rotating cylinder 192 for driving the sealing door 18 to rotate is installed on the bogie 19. The sealing door 18 is driven to rotate by the rotating cylinder 192 to lock or unlock the sealing door 18 with the opening of the hot press tank body 1. When the opening end of the hot press tank body 1 and the end face of the sealing door 18 are abutted, the sealing door 18 is opened or closed. A high-temperature resistant rubber ring is embedded in the joint. When closed, the rotating cylinder 181 drives the sealing door 18 to press the high-temperature resistant rubber ring at the open end of the autoclave body 1 to ensure airtightness under high-pressure environment. In order to prevent the sealing door 18 from interfering with the track outside the autoclave body 1 when opening or closing the open end of the autoclave body 1, a movable guide rail 101 is provided outside the autoclave body 1. When the sealing door 18 needs to be closed, the movable guide rail 101 is driven by the driving cylinder 102 to move away from the sealing door 18 in a direction perpendicular to the track 15, or the movable guide rail 101 is manually moved away from the open end of the autoclave body 1 to facilitate the closing of the sealing door 18.

[0047] The embodiments of the present application also disclose a method for hot pressing a carbon fiber door frame.

[0048] A carbon fiber door frame hot press forming method, based on the above-mentioned carbon fiber door frame hot press forming device, comprises the following steps: S1 mold assembly: clean the concave mold portion of the mold 4 for molding and assemble the mold 4; S2 die laying: laying carbon fiber raw material layer in the die portion of the mold 4, the carbon fiber raw material layer is overlapped at the four corners; S3 mold packaging: The workpiece temperature sensor 417 is attached to the surface of the carbon fiber raw material layer, and the four sides of the mold 4 are wrapped with a porous anti-stick film and a breathable felt. Then, the mold 4 is set into a vacuum bag 5. The opening of the vacuum bag 5 is sealed and bonded to the end of the suspension member 41 near the mold 4; S4 mold hanging: the mold 4 hanging member 41 is pushed into the hanging beam 31 for multiple molds 4 hanging; S5. Docking into the tank: Push the mobile trolley 2 into the autoclave 1, and align the vacuum port 413, vacuum detection port 414, workpiece temperature detection port 415, and module temperature detection port 416 on each mold 4, respectively, with the vacuum port 11, vacuum detection port 12, workpiece temperature detection plug 13, and module temperature detection plug 14 within the autoclave 1; S6. Seal test: Check the sealing state of the mold 4 and the vacuum bag 5. The negative pressure value in the vacuum bag 5 is qualified in the range of -90Kpa to -100Kpa; S7 hot pressing curing: Close the autoclave door 1, set the workpiece hot pressing parameters, and start the hot pressing equipment; S8. Remove the mold from the can: After the hot pressing process is completed, the temperature inside the hot press tank body 1 drops below 90°C, the pressure inside the hot press tank body 1 is released, the sealing door is opened, the mobile trolley 2 is pulled out of the hot press tank body 1, and the mold is removed to take out the door frame workpiece, and preparations are made for the next cycle of hot pressing production.

[0049] The embodiment of the present application is a carbon fiber door frame hot pressing forming method, which utilizes a carbon fiber door frame hot pressing forming device including a hot pressing tank body 1, a mobile trolley 2 and its placement frame 3, and a mold 4 hanging design to achieve efficient operation of the entire process from mold 4 assembly to final demolding and taking out the finished product. Specifically: using a hanging part 41 with a vacuum socket 413, a vacuum detection socket 414 and other designs, the operator connects the vacuum socket 413, vacuum detection socket 414, workpiece temperature detection socket 415 and module temperature detection socket 416 on each mold 4 to the vacuum suction port 11, vacuum detection port 12, workpiece temperature detection plug 13 and module temperature detection plug 14 in the hot pressing tank body 1, respectively, to ensure a quick interface connection between the mold 4 and the hot pressing environment, significantly improving the efficiency of the preparation work; the design of the mobile trolley 2 in conjunction with the track 15 system and the drive mechanism 6 greatly It facilitates the operation process of a trolley loaded with multiple molds 4 entering and exiting the autoclave, reducing the degree of manual intervention; the central controller 77 receives the monitoring data of the vacuum sensor 76, the workpiece temperature detection plug 13 and the module temperature detection plug 14 in real time, and automatically adjusts the operating parameters of the vacuum pump 71, the heating mechanism 8 and the pressurizing mechanism 9 according to the preset threshold value to ensure stable and reliable product quality; the heating mechanism 8 applies heat evenly by convection, which promotes the improvement of energy utilization and ensures the consistency of product performance; the automatic pressure increase and decrease mechanism allows for precise management of internal pressure conditions, enhancing the safety and controllability of the entire process.

[0050] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application in sequence. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A carbon fiber door frame hot pressing forming device, characterized in that: The invention comprises a hot press tank body (1), a mobile trolley (2) capable of moving in the hot press tank body (1), a placement rack (3) provided on the mobile trolley (2), a plurality of molds (4) for door frame molding suspended on the placement rack (3), a plurality of groups of hanging beams (31) of two each provided on the placement rack (3), a hanging piece (41) capable of hanging on the same group of hanging beams (31) provided on the molds (4), a vacuum bag (5) wrapped around the outside of the molds (4), the vacuum bag (5) opening facing the hanging piece (41) and being sealed and connected to the molds (4), a plurality of vacuum suction ports (11), a plurality of vacuum detection ports (12), a plurality of workpiece temperature sensors (13) and the like provided in the hot press tank body (1). A detection plug (13) and a plurality of module temperature detection plugs (14); the hanging member (41) of each mold (4) is provided with a vacuuming socket (413), a vacuum detection socket (414), a workpiece temperature detection socket (415) and a module temperature detection socket (416) connected in sequence; the vacuuming socket (413) and the vacuum detection socket (414) are connected to the inside of the vacuum bag (5) through a vacuum channel (441) provided on the mold (4); the workpiece temperature detection socket (415) is connected to a workpiece temperature sensor (417) for detecting the workpiece temperature; and the module temperature detection socket (416) is connected to a module temperature sensor (418) for detecting the module temperature.

2. The carbon fiber door frame hot pressing forming device according to claim 1, characterized in that: The suspension member (41) comprises a connecting plate (411) fixedly connected to the mold (4), and a support plate (412) fixedly connected to an end of the connecting plate (411) away from the mold (4), wherein the support plate (412) can be suspended and supported on the same set of the hanging beams (31). An end of the connecting plate (411) close to the opening of the autoclave (1) is provided with a vacuuming socket (413), a vacuum detection socket (414), a workpiece temperature detection socket (415), and a module temperature detection socket (416). The connecting plate (411) is provided with a connecting air duct (4111) connected to the vacuum channel (441), and is also provided with a wiring groove (4112) for installing and connecting a workpiece temperature sensor (417) and a module temperature sensor (418).

3. The carbon fiber door frame hot pressing forming device according to claim 2, characterized in that: The mold (4) includes two first bottom templates (42), two second bottom templates (43), a first frame template (44) and a second frame template (45), the two second bottom templates (43) are arranged side by side at intervals, the two first bottom templates (42) are detachably mounted on the two ends of the two second bottom templates (43), the two first frame templates (44) are detachably fixed on the first bottom template (42), the two second frame templates (45) are connected to the two ends of the first frame template (44) and are detachably fixed on the first bottom template (42) and the second bottom template (43), one of the first frame templates (44) is fixedly connected to the connecting plate (411), and the first frame template (44) connected to the connecting plate (411) is provided with a mounting groove (442) connected to the wiring groove (4112) for mounting the module temperature sensor (418) and the vacuum channel (441).

4. The carbon fiber door frame hot pressing forming device according to claim 2, characterized in that: A plurality of roller assemblies (32) are rotatably arranged on the inner sides of the same group of the hanging beams (31), wherein the roller assemblies (32) include rolling wheels (321), bearings (322), and fixed shafts (323) fixedly connected to the hanging beams (31). The support plate (412) can be suspended and supported on two rows of the rolling wheels (321), and the connecting plate (411) can move between the two rows of the rolling wheels (321).

5. The carbon fiber door frame hot pressing forming device according to claim 1, characterized in that: The mobile trolley (2) comprises a frame (21), the frame (21) is fixedly connected to the placement rack (3), two axles (22) are arranged in parallel along the moving direction on a side of the frame (21) away from the placement rack (3), wheels (23) are rotatably mounted on both ends of the axles (22), a track (15) adapted to the wheelbase of the wheels (23) is provided on the inner wall of the autoclave (1), and a driving mechanism (6) for driving the mobile trolley (2) to enter and exit the autoclave (1) is provided on the outside of the autoclave (1).

6. The carbon fiber door frame hot pressing forming device according to claim 5, characterized in that: The driving mechanism (6) includes a driving electric cylinder (61), a movable frame (62) connected to a telescopic shaft of the driving electric cylinder (61), a hooking member (63) rotatably arranged on the movable frame (62) for hooking the axle (22), the hooking member (63) being provided with a hooking groove (631) adapted to the axle (22), and an air spring (64) for driving the hooking member (63) to hook into or out of the hooking groove (631) of the axle (22), one end of the air spring (64) being fixedly connected to the movable frame (62), and the other end being connected to the hooking member (63).

7. The carbon fiber door frame hot pressing forming device according to claim 1, characterized in that: The invention also includes a vacuum pump (71) installed outside the autoclave (1), a vacuum pipe (72) connected to the air extraction port of the vacuum pump (71), and a plurality of vacuum branch pipes (73) connected to the vacuum pipe (72). A first electromagnetic reversing valve (74) is provided on the vacuum branch pipe (73). One end of the vacuum branch pipe (73) away from the vacuum pipe (72) passes through the side wall of the autoclave (1) and is connected to the vacuum suction port (11). The vacuum detection port (12) passes through the side wall of the autoclave (1) through a vacuum detection pipe (75). A vacuum sensor (76) for detecting the vacuum degree is installed at one end of the vacuum detection pipe (75) located outside the autoclave (1).

8. The carbon fiber door frame hot pressing forming device according to claim 1, characterized in that: The autoclave (1) further comprises a heating mechanism (8) for heating the interior of the autoclave, the heating mechanism (8) comprising an electric heater (81) disposed within the autoclave near the closed end, a fan (82) mounted on the closed end of the autoclave, and a motor (83) for driving the fan (82) to rotate, the motor (83) being fixedly mounted on the outer wall of the closed end of the autoclave.

9. The carbon fiber door frame hot pressing forming device according to claim 1, characterized in that: The apparatus further comprises a pressurizing mechanism (9) for pressurizing the interior of the autoclave (1), wherein the pressurizing mechanism (9) comprises an air compressor (91), an air outlet of the air compressor (91) being connected to the interior of the autoclave (1) via a pressure pipe (92), a second electromagnetic reversing valve (93) being provided on the pressure pipe (92), and a third electromagnetic reversing valve (94) for exhausting air being provided on the autoclave (1).

10. A carbon fiber door frame hot pressing forming method, characterized in that: The carbon fiber door frame hot pressing forming device according to any one of claims 1 to 9 comprises the following steps: S1. Mold assembly: cleaning the concave mold portion of the mold (4) used for molding, and assembling the mold (4); S2. Die laying: laying a carbon fiber raw material layer on the die portion of the mold (4), and the four corners of the carbon fiber raw material layer are overlapped; S3. Mold packaging: Paste the workpiece temperature sensor (417) on the surface of the carbon fiber raw material layer, wrap the four sides of the mold (4) with a porous anti-stick film and a breathable felt in sequence, and then put the mold (4) into a vacuum bag (5), and seal the opening of the vacuum bag (5) with the end of the suspension member (41) close to the mold (4); S4. Mold hanging: pushing the hanging member (41) of the mold (4) into the hanging beam (31) to hang multiple molds (4); S5. Insertion and docking: Push the mobile trolley (2) into the autoclave body (1), and dock the vacuum suction port (413), vacuum detection port (414), workpiece temperature detection port (415), and module temperature detection port (416) on each mold (4) with the vacuum suction port (11), vacuum detection port (12), workpiece temperature detection plug (13), and module temperature detection plug (14) in the autoclave body (1), respectively; S6. Sealing test: testing the sealing state of the sealed connection between the mold (4) and the vacuum bag (5), and the negative pressure value in the vacuum bag (5) reaches the preset negative pressure value range to be qualified; S7 hot pressing curing: close the hot pressing tank (1) sealing door, set the workpiece hot pressing parameters, and start the hot pressing equipment; S8. Unloading the tank and removing the mold: After the hot pressing process is completed, the temperature inside the hot pressing tank body (1) drops below 90°C, the pressure inside the hot pressing tank body (1) is released, the sealing door is opened, the mobile trolley (2) is pulled out of the hot pressing tank body (1), and the mold is removed to take out the door frame workpiece, and at the same time, preparations are made for the next cycle of hot pressing production.

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