A carbon fiber pipe prepreg processing device and method

Abstract

The present application relates to the technical fields of pre-impregnated cloth processing forming, and particularly relates to a pre-impregnated cloth processing device for carbon fiber pipe, comprising: a vacuum bag with open ends; the both ends of a core rod are provided with mounting seats, the mounting seats can fix the open ends of the vacuum bag, and the inner surface of at least one mounting seat is provided with a gas guide groove, and the outer side of the mounting seat corresponding to the gas guide groove is provided with a gas guide valve; the gas guide template comprises a hollow gas guide rod, and arc-shaped plates connected to the both sides of the gas guide rod, the arc-shaped plates are provided as elastically deformable arc-shaped plates, and the gas guide rod is provided with gas guide holes along the length direction thereof; when the gas guide rod is installed at the lower side of the core rod, the arc-shaped plates can extend to the outer side of the core rod, and the end part of the gas guide rod can extend to the gas guide groove, and when the vacuum bag is sleeved outside the core rod and the gas guide template, the arc-shaped plates can be compressed and closed to the center direction of the core rod. The present application optimizes the setting of the gas guide template, adjusts the pre-impregnated cloth coating and vacuumizing process, and effectively solves the problems existing in the prior art.

Description

Technical Field

[0001] This invention relates to the field of prepreg processing and molding technology, and in particular to a prepreg processing apparatus and method for carbon fiber tubes. Background Technology

[0002] The use of carbon fiber tubes is gradually increasing in some pressure transmission conduits. Currently, the main processing methods for carbon fiber tubes are autoclave curing and compression molding curing. Compression molding curing requires the preparation of segmented sleeve molds, as well as the machining of venting grooves and mold surfaces inside the molds. This method places high demands on the precision of the molds and processing costs. Furthermore, it requires specialized mold-closing tools and lifting tools for mold closing and opening, and it is not easy to operate the molds for long tubular structures.

[0003] The autoclave curing process requires laying prepreg and spacer fabric on the outside of the core rod, then sealing the entire vacuum bag over the core rod with sealing strips and evacuating it. After evacuation, the vacuum is maintained for a certain time (maintaining a vacuum level above -0.09 MPa) before the entire system is transferred to the autoclave for hot pressing. This molding method has the following problems: Due to the long length of the tubular structure, the vacuum bag exhibits poor uniformity along its length during evacuation, resulting in the near-mouth portion of the vacuum bag closing first, leading to lower vacuum efficiency and unstable vacuum quality at the far end. Therefore, the evacuation time needs to be extended to ensure molding quality (50 to 90 minutes in some cases). Because the near-mouth portion of the tubular vacuum bag closes more noticeably, using high negative pressure to quickly increase the vacuum level can significantly increase the pressure on the prepreg fabric near the mouth, leading to uneven molding on the surface of the prepreg fabric. Therefore, compressing the evacuation time for this type of tubular structure is quite difficult.

[0004] To ensure molding quality, the prepreg should be transferred to the autoclave 14 within 15 minutes after vacuuming. When it is necessary to temporarily store the material to be cured after vacuuming, the vacuum should be maintained and the material should be placed in an environment ≤25°C (for a maximum of 2 hours to prevent resin pre-curing).

[0005] Currently, the applicant uses a method where the core rod is mounted on a dedicated support at both ends, and the core rod rotates to quickly complete the prepreg, spacer fabric, and breathable felt laying operations. To improve the utilization efficiency of the autoclave and dedicated support, the applicant anticipates optimizing the processing time to allow two core rods processed on a single dedicated support to be cured in the same batch in the autoclave. However, due to the limited storage time (within 2 hours) for the material to be cured after vacuuming the first piece, the processing time for each step of the second core rod is quite tight. After deducting the time required to meet vacuuming standards, the time available for prepreg, spacer fabric, and breathable felt laying is limited, making it difficult to maintain quality while compressing processing time. Therefore, this application proposes a prepreg processing device and method for carbon fiber tubes. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a prepreg processing apparatus and method for carbon fiber tubes. By optimizing the setting of the air guiding template and adjusting the prepreg wrapping and vacuuming processes, the problems existing in the prior art are effectively solved.

[0007] To address the aforementioned problems, this invention provides a prepreg processing apparatus for carbon fiber tubes, comprising: a vacuum bag, the vacuum bag being configured as a cylindrical structure with both ends open; a core rod, the core rod having support ends at both ends, each support end having a mounting seat capable of fixing the open ends of the vacuum bag, and at least one mounting seat having an air guide groove on its inner surface, and an air guide valve on the outer side of the mounting seat corresponding to the air guide groove; and an air guide template, the air guide template comprising a hollow air guide rod and arc-shaped plates connected to both sides of the air guide rod, the arc-shaped plates being elastically deformable, and the air guide rod having air guide holes spaced apart along its length; when the air guide rod is installed on the underside of the core rod, the arc-shaped plates can extend to the outer side of the core rod, and the end of the air guide rod can extend to the air guide groove; when the vacuum bag is fitted over the core rod and the air guide template, it can compress the arc-shaped plates toward the center of the core rod.

[0008] Furthermore, the bottom of the arc-shaped plate is detachably connected to the air guide rod.

[0009] Furthermore, the inner surface of the air guide rod is arc-shaped, the edge of the air guide rod is provided with a slot, and the edge of the arc-shaped plate is folded to form a connecting rib that can be inserted into the slot.

[0010] Furthermore, the air guiding template also includes an upper support rod, the inner surface of which is arc-shaped, and guide grooves are provided on both sides of the upper support rod; when the air guiding rod is located on the lower side of the core rod and the upper support rod is located on the upper side of the core rod, the upper edge of the arc-shaped plate can extend to the guide groove.

[0011] Alternatively, when the air guide rod is installed on the lower side of the core rod, the upper edge of the arc-shaped plate can extend to the upper side of the core rod, and the upper edges of the two arc-shaped plates can be stacked in an alternating manner.

[0012] Alternatively, the air guide template may further include an upper support rod, with elastically deformable upper plates on both sides of the upper support rod. The upper plates are arc-shaped. When the upper support rod is located on the upper side of the core rod and the air guide rod is located on the lower side of the core rod, the upper plates and the arc-shaped plates overlap.

[0013] Furthermore, the outer end of the air guide rod is formed with a connecting pipe that extends into the air guide groove. The connecting pipe is recessed towards the surface of the core rod, and a rubber block is sleeved on the connecting pipe. The rubber block is inserted into the air guide groove with an interference fit.

[0014] Furthermore, the mounting base includes a base body connected to the core rod and a clamping body connected to the base body. The base body includes an inner clamping ring and an outer flange disposed outside the inner clamping ring. The clamping body includes an inner flange that can be connected to the outer flange and an outer clamping ring disposed inside the outer flange. The inner clamping ring and the outer clamping ring can clamp and fix the vacuum bag.

[0015] The present invention also provides a method for processing prepreg tubes, based on the above-mentioned prepreg processing apparatus for carbon fiber tubes, the processing method comprising: It provides a dedicated bracket to support the mounting base, an autoclave, and a storage area on one side of the autoclave, which can ensure that the temperature is within the set temperature range; S1. Install the mounting bases at both ends of the core rod A onto the special bracket, and cover the surface of the core rod A with prepreg cloth; S2. Lay a release fabric on the surface of the prepreg fabric, and cover the surface of the release fabric with a breathable felt. S3. Place the air guide rod under the core rod A, and make the arc plate cover the outside of the breathable felt to complete the arrangement of the air guide template at the core rod A. S4. Place the vacuum bag over the outside of the core rod A and the ventilated template, and evacuate the vacuum through the air valve of the mounting base. S5. Separate the mounting bases at both ends of core rod A from the special bracket, and transfer core rod A to the storage area for continuous vacuuming; S6. Install the mounting bases at both ends of the core rod B on the special bracket. Lay prepreg on the surface of the core rod B, lay release fabric on the surface of the prepreg, and cover the surface of the release fabric with breathable felt. S7. Place the air guide rod under the core rod B, and make the arc-shaped plate cover the outside of the breathable felt to complete the arrangement of the air guide template at the core rod B; S8. Place the vacuum bag over the outside of the core rod B and the ventilated template, and evacuate the vacuum through the air valve of the mounting base. S9. After vacuuming the core rod B position for the set time, separate the mounting bases at both ends of the core rod B from the special bracket, and put the core rod B and core rod A together into the autoclave for hot pressing.

[0016] Furthermore, prior to step S1, vacuum bags are pre-installed on core rod A and core rod B, with one end of the vacuum bag pre-installed on the mounting base at the corresponding end of the core rod.

[0017] The beneficial effect of this invention is that by optimizing the setting of the air guiding template, adjusting the prepreg wrapping and vacuuming processes, the problems existing in the prior art are effectively solved. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the processing device of an embodiment of the present invention installed behind a special bracket.

[0019] Figure 2 for Figure 1 A partial structural diagram of the mounting base location in the illustrated embodiment.

[0020] Figure 3 for Figure 1 A partial structural diagram of one end of the air guide template in the embodiment shown.

[0021] Figure 4 for Figure 1 The illustrated embodiment shows a schematic diagram of the disassembled structure of the mounting base.

[0022] Figure 5 for Figure 1 The diagram shows a lateral cross-sectional view of the vacuum bag after both ends are fixed at the center line of the core rod.

[0023] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point A in the middle.

[0024] Figure 7 for Figure 1The illustrated embodiment shows a cross-sectional view of the core rod after the air guide template has been installed.

[0025] Figure 8 For another embodiment of the present invention, see reference. Figure 7 A partial structural diagram.

[0026] Figure 9 For another embodiment of the present invention, see reference. Figure 7 A partial structural diagram.

[0027] Figure 10 This is a schematic diagram of a workstation in the processing method of the present invention.

[0028] The components include: 1. Vacuum bag; 2. Core rod; 3. Mounting base; 301. Base body; 3011. Inner clamping ring; 3012. Outer flange; 302. Clamping body; 3021. Outer clamping ring; 3022. Inner flange; 4. Air guide groove; 5. Air guide valve; 6. Air guide rod; 7. Arc plate; 701. Connecting rib; 8. Slot; 9. Upper support rod; 10. Guide groove; 11. Upper plate; 12. Connecting pipe; 13. Rubber block; 14. Autoclave; 15. Storage area; 16. Special bracket; 17. Bracket; 18. Automatic tape laying machine. Detailed Implementation

[0029] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0030] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0031] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two connected entities do not establish a connection relationship through an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0033] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] In this invention, such as Figure 1-9 As shown, a prepreg processing apparatus for carbon fiber tubes is provided, comprising: a vacuum bag 1, the vacuum bag 1 being configured as a cylindrical structure with both ends open; a core rod 2, the core rod 2 having both ends forming support ends, each support end having a mounting seat 3 capable of fixing the open ends of the vacuum bag 1, and at least one of the mounting seats 3 having an air guide groove 4 on its inner surface, and an air guide valve 5 on the outer side of the mounting seat 3 corresponding to the position of the air guide groove 4; and an air guide template, the air guide template including a middle... An empty air guide rod 6 and an arc-shaped plate 7 connected to both sides of the air guide rod 6 are provided. The arc-shaped plate 7 is configured to be elastically deformable. The air guide rod 6 is provided with air guide holes at intervals along its length. When the air guide rod 6 is installed on the lower side of the core rod 2, the arc-shaped plate 7 can extend to the outside of the core rod 2, and the end of the air guide rod 6 can extend to the air guide groove 4. When the vacuum bag 1 is sleeved on the outside of the core rod 2 and the air guide template, it can compress the arc-shaped plate 7 towards the center of the core rod 2.

[0035] In operation, the processing device of this invention pre-installs one end of the vacuum bag 1 on one of the mounting seats 3, and then moves the entire core rod 2 to a special bracket, which supports the mounting seat 3. At this time, prepreg fabric, spacer fabric, and breathable felt can be laid on the surface of the core rod 2 (prepreg fabric laying can be done with the help of an ATL automatic laying machine 18 or manually). Then, the air guide rod 6 of the air guide template is set on the lower side of the core rod 2, and the arc plate 7 covers the outside of the breathable felt. The vacuum bag 1 is pulled to another mounting seat 3 and fixed, so that the two mounting seats 3 and the vacuum bag 1 form a closed space. At this time, the core rod can be moved to the storage area 15 (preferably a constant temperature area with a temperature of less than or equal to 25°) by moving the mounting seats 3 at both ends of the core rod 2, and vacuum storage is performed by connecting an external vacuum device through the air guide valve 5, waiting to enter the autoclave 14 for curing (waiting time not exceeding 2 hours). After the top core rod 2 of the special support is hoisted away, the new core rod 2 can be hoisted onto the special support for the stacking operation. The processing device of the present invention has the following technical effects: Firstly, by setting up an air guide template, the present invention can provide negative pressure for vacuuming evenly along the length of the core rod 2 using the air guide rod 6 during vacuuming. Compared with the existing method of installing air nozzles on the vacuum bag 1, this invention can effectively prevent the vacuum bag 1 from being compressed. The present invention can improve the quality of vacuuming and reduce the vacuuming time.

[0036] Secondly, by setting an air guide template, the present invention can provide stable and uniform support for the core rod 2 at the bottom. This allows external support items (such as brackets) to be easily supported in the middle section of the core rod 2 during the process of moving the core rod 2 to the storage area 15, during the process of the autoclave 14, and when storing in the storage area 15 and the autoclave 14. This facilitates the movement of the core rod 2 and also prevents the middle section of the core rod 2 from sagging and deforming. The air guide template can also prevent the support items from causing indentations on the prepreg fabric during molding.

[0037] Thirdly, by incorporating an elastically deformable arc-shaped plate 7, this invention allows the arc-shaped plate 7 to be gradually and evenly pressed against the outer side of the stacked breathable felt during the vacuuming process of the vacuum bag 1. This enables the compression force transmitted from the vacuum bag 1 to the prepreg fabric to be transmitted through the arc-shaped plate 7. The inner surface of the arc-shaped plate 7 is relatively smooth and flat. Compared to the condition where the vacuum bag 1 transmits pressure through the breathable felt and the spacer fabric, this invention can prevent uneven pressure in the prepreg fabric caused by local wrinkles in the vacuum bag 1, thereby reducing the occurrence of irregularities in the prepreg fabric formation. In addition, because the surface of the arc-shaped plate 7 is smooth and flat, the arc-shaped plate 7 and the breathable felt have better gas permeability during the pressing process of the breathable felt compared to the breathable felt and the vacuum bag 1, thereby further improving the vacuuming efficiency of the vacuum bag 1.

[0038] Fourth, the present invention uses a metal plate that can be elastically deformed. Compared with the molded template, a lighter stainless steel sheet (thickness between 1-3mm) can be used. The deformation capability of the metal plate can be used to apply pressure with the vacuum bag 1 to achieve a regular molding effect. It can also reduce the weight of the air guide template, allowing the air guide template to be manually lifted and installed, thus improving the assembly and disassembly efficiency. Furthermore, the arc plate 7 can be used to protect the workpiece after vacuuming, protecting the stacked covering material in case of collisions during transportation.

[0039] Fifth, the present invention can arrange the vacuum bag 1 between the two mounting bases 3. Compared with the method of encasing the entire core rod 2 in the vacuum bag 1 and then sealing and evacuating the air, the present invention does not require the core rod 2 to be encased in the vacuum bag 1 from both ends, which reduces the difficulty of operation and bagging time, and also reduces the possibility of the vacuum bag 1 being bumped and broken during the transfer process.

[0040] In this invention, the time required to achieve vacuum standard is reduced by setting the air guide template, and the installation difficulty and arrangement time of the vacuum bag 1 are reduced by optimizing the setting of the vacuum bag 1. This allows for hot pressing in the same autoclave 14 when two core rods 2 are laid consecutively on a single support frame. The following is a time-based explanation using a specific embodiment as an example.

[0041]

[0042] In the table above, the processing time for processes marked with "≤" is calculated based on the maximum time. Core rod B is placed in the support frame to begin processing as soon as core rod A completes the "transfer to storage area 15" process. Based on the time allocation in the table above, t2 has ample processing time. Furthermore, compressing the t2 processing time can increase the time required to achieve the required vacuum level, thereby further improving the vacuum quality. It is evident that this invention can rationally arrange the time for each process, allowing two core rods processed consecutively on the same support frame to be placed in the same autoclave 14 for curing.

[0043] Referring to the traditional vacuum bag 1 thermoforming process, as illustrated in the table below, it can be seen that due to the long installation and vacuuming time of the vacuum bag 1, the time allocated to t2 is relatively short, making it difficult to provide sufficient time to ensure...

[0044] Regarding the structure of the present invention, Figures 1 to 9In the illustrated embodiment, more specifically, the bottom of the arc-shaped plate 7 is detachably connected to the air guide rod 6. This arrangement allows the air guide rod 6 and the arc-shaped plate 7 to be separate structures, enabling differentiated arrangements of the air guide rod 6 and the arc-shaped plate 7. In a specific embodiment, the air guide rod 6 can be made of a high-strength aluminum alloy rod structure, which maintains the regular shape of the top surface of the air guide rod 6 and also achieves lightweight and easy processing. The arc-shaped plate 7 can be made of stainless steel.

[0045] exist Figures 1 to 9 In the illustrated embodiment, to further specify the structure of the present invention, the inner surface of the air guide rod 6 is arc-shaped, the edge of the air guide rod 6 is provided with a slot 8, and the edge of the arc-shaped plate 7 is folded to form a connecting rib 701 that can be inserted into the slot 8. Figures 1 to 3 As shown, by setting the inner surface of the air guide rod 6 into an arc shape, the inner surface of the air guide rod 6 can stably and regularly support the covering material on the side of the core rod 2. By using the connecting rib 701 to cooperate with the slot 8, during assembly, the air guide rod 6 can be moved to the lower side of the core rod 2 first, and then the connecting rib 701 at the lower edge of the arc plate 7 can be inserted into the slot 8 for fixation, so that the top surface of the air guide rod 6 and the inner surface of the arc plate 7 are initially attached to the surface of the covering material.

[0046] In a preferred embodiment, regarding the arrangement of the arc-shaped plate 7, more specifically, when the air guide rod 6 is installed on the lower side of the core rod 2, the upper edge of the arc-shaped plate 7 can extend to the upper side of the core rod 2, and the upper edges of the two arc-shaped plates 7 can be staggered and overlapped. For example... Figure 8 As shown, the tops of the two curved plates 7 are staggered to achieve complete encapsulation of the packaged item. When the vacuum bag 1 compresses the curved plates 7, portions of the two curved plates 7 can move relative to each other to compress the packaged item inward. This design provides sufficient space for movement on the upper edge of the curved plates 7, allowing them to quickly deform upwards and conform to the surface of the packaged item when the vacuum bag 1 compresses them.

[0047] In an optional embodiment, the upper edge of the arc-shaped plate 7 can also be configured as shown in the figure. The air guide template further includes an upper support rod 9, the inner surface of which is arc-shaped, and guide grooves 10 are provided on both sides of the upper support rod 9. When the air guide rod 6 is located below the core rod 2 and the upper support rod 9 is located above the core rod 2, the upper edge of the arc-shaped plate 7 can extend to the guide grooves 10. Figure 7As shown, when installing the air-guiding template, the upper edge of the arc-shaped plate 7 can be inserted into the guide groove 10 to initially fix the upper edge of the arc-shaped plate 7, making the outer side of the air-guiding template neat, thus facilitating the fitting of the vacuum bag 1 onto the outer side of the covering of the core rod 2. When the vacuum bag 1 is vacuumed and compressed, the friction between the upper edge of the arc-shaped plate 7 and the groove wall of the guide groove 10 is smaller, allowing the upper edge of the arc-shaped plate 7 to move more flexibly when compressed and deformed, preventing the upper edge of the arc-shaped plate 7 from rubbing against the breathable felt.

[0048] For the installation of the upper support rod, in a preferred embodiment, the bottom surface of the support rod can be set to be arc-shaped, and the support rod can be placed directly on top of the covering; alternatively, a slot for inserting the upper support rod can be provided in the mounting base 3, and the upper support rod can be inserted into the slot.

[0049] In an alternative embodiment, the air guiding template may also be configured such that an upper support rod 9 is provided on both sides of the upper support rod 9, and the upper plate 11 is provided in an arc shape. When the upper support rod 9 is provided on the upper side of the core rod 2 and the air guiding rod 6 is provided on the lower side of the core rod 2, the upper plate 11 overlaps with the arc plate 7. Figure 9 As shown, the upper support rod is designed as a cylindrical tube, and the upper plates on both sides of the upper support rod are an integral structure. The upper support rod is located in the middle of the two upper plates, and the mounting base has positioning slots at both ends of the upper support rod for insertion. Both the arc plate 7 and the upper plate 11 are designed as arc structures with a central angle of approximately 90° (±10°), which further reduces the weight of a single arc plate 7 and facilitates installation. Moreover, the upper plate 11 and the arc plate 7 can overlap on both sides of the core rod in the transverse direction, so that when the vacuum bag 1 is vacuumed, the upper plates 11 and the arc plate 7 on both sides of the core rod can be relatively offset and compressed inward, which further improves the flexibility of the arc plate 7 and the upper plate 11 in shrinkage and deformation. This prevents the arc plate 7 and the upper plate 11 from being obstructed in their circumferential deformation movement along the core rod 2, thus ensuring the uniform adhesion of the arc plate 7 and the upper plate 11 to the covering material and further improving the quality of the prepreg forming.

[0050] exist Figures 1 to 9 In the illustrated embodiment, for the structure of the present invention, more specifically, the outer end of the air guide rod 6 is formed with a connecting pipe 12 extending into the air guide groove 4. The connecting pipe 12 is recessed toward the surface of the core rod 2, and a rubber block 13 is sleeved on the connecting pipe 12. The rubber block 13 is inserted into the air guide groove 4 with an interference fit.

[0051] like Figure 3 and Figure 6As shown, by setting the rubber block 13, when the air guide rod 6 is installed on the lower side of the core rod 2, it can be initially fixed in the air guide groove 4 by the rubber block 13, thereby stabilizing the position of the air guide rod 6. When the vacuum bag 1 contracts, the rubber block 13 portion facing the core rod 2 can be compressed and deformed by the connecting pipe 12, causing the air guide rod 6 to move closer to the core rod 2. Moreover, by filling the air guide groove 4 with the rubber block 13, it is also possible to prevent the vacuum bag 1 from being cut by the edge of the air guide groove 4 due to irregular compression deformation within the air guide groove 4 during vacuuming and compression.

[0052] exist Figure 1 In the illustrated embodiment, for the structure of the present invention, more specifically, the mounting base 3 includes a base body 301 connected to the core rod 2 and a clamping body 302 connected to the base body 301. The base body 301 includes an inner clamping ring 3011 and an outer flange 3012 disposed outside the inner clamping ring 3011. The clamping body 302 includes an inner flange 3022 connected to the outer flange 3012 and an outer clamping ring 3021 disposed inside the outer flange 3012. The inner clamping ring 3011 and the outer clamping ring 3021 can clamp and fix the vacuum bag 1.

[0053] like Figure 4 As shown, the outer surface of the clamping body 302 is conical. When installing and fixing the vacuum bag 1, the end of the vacuum bag 1 can be placed on the outside of the inner clamping ring 3011, and then the clamping body 302 can be moved towards the base 301, so that the vacuum bag 1 is clamped and fixed between the inner clamping ring 3011 and the outer clamping ring 3021. The connection between the inner flange 3022 and the outer flange 3012 further improves the fixing effect of the vacuum bag 1. In the illustrated embodiment, for the sealing performance of the clamping and fixing of the vacuum bag 1 between the inner clamping ring 3011 and the outer clamping ring 3021, the outer surface of the inner clamping ring 3011 is provided with a sealing groove, and a sealing ring is fixed in the sealing groove.

[0054] In the embodiments of the present invention, the method of fixing the vacuum bag 1 to the mounting base 3 is not limited to the method of the base 301 and the clamping body 302 shown in the figure. In optional embodiments, other methods may also be used, such as using a clamp to fix the vacuum bag 1 at the position of the clamping body 302.

[0055] exist Figure 1 In the illustrated embodiment, to facilitate pre-installation of the vacuum bag 1 on the mounting base 3 and to facilitate demolding after molding, preferably, at least one mounting base 3 and the core rod 2 are detachable, specifically as follows: Figure 1 and Figure 2As shown, six through holes are provided on the outer end face of the mounting base 3, and six threaded holes are provided on the corresponding end face of the core rod 2. Three of the through holes are countersunk through holes. The mounting base 3 is fixed to the core rod 2 with bolts at the countersunk through hole positions.

[0056] The arrangement of the mounting base 3 on the dedicated bracket 16 is not considered an improvement of the present invention. Here, an example is provided for illustration. Preferably, as follows... Figure 1 and Figure 2 As shown, three of the six through holes on the outer surface of the base 301 are non-countersunk through holes. The base 301 can be fixed to the special bracket 16 with bolts at the three non-countersunk hole positions. The special bracket 16 can be a rotating bracket as shown in the figure. Two rotating brackets are arranged opposite each other. Each of the two rotating brackets is provided with a rotatable connecting shaft. A connecting plate is provided at the inner end of the connecting shaft. The connecting plate is connected and fixed to the base 301 at the three non-countersunk through hole positions.

[0057] The present invention also provides a method for processing prepreg tubing, based on the aforementioned processing apparatus, with reference to... Figure 10 The workstation layout shown is described below, where number 18 is an automatic tape laying machine used to lay prepreg onto the core rod. The processing method includes a prepreg processing device based on carbon fiber tubes, and the processing method includes: A dedicated bracket 16 that can support the mounting base 3, an autoclave 14, and a storage area 15 located on one side of the autoclave 14 are provided. The storage area 15 can meet the requirement that the temperature is within a set temperature range. S1. Install the mounting bases 3 at both ends of the core rod A onto the special bracket 16, and lay prepreg on the surface of the core rod A. S2. Lay a release fabric on the surface of the prepreg fabric, and cover the surface of the release fabric with a breathable felt. S3. Place the air guide rod under the core rod A, and make the arc plate 7 cover the outside of the breathable felt to complete the arrangement of the air guide template at the core rod A. S4. Place the vacuum bag 1 on the outside of the core rod A and the ventilated template, and evacuate the vacuum through the air valve 5 of the mounting seat 3. S5. Separate the mounting bases 3 at both ends of the core rod A from the special bracket 16, and transfer the core rod A to the storage area 15 and continue to evacuate the vacuum. like Figure 9 As shown, the storage area 15 is provided with two brackets 17. Core rod A is placed on the lower bracket 17, while core rod B is kept in the special bracket 16 for processing.

[0058] S6. Install the mounting bases 3 at both ends of the core rod B onto the special bracket 16. Lay prepreg on the surface of the core rod B, lay release fabric on the surface of the prepreg, and cover the surface of the release fabric with breathable felt. S7. Place the air guide rod under the core rod B, and make the arc plate 7 cover the outside of the breathable felt to complete the arrangement of the air guide template at the core rod B; S8. Place the vacuum bag 1 on the outside of the core rod B and the ventilated template, and evacuate the vacuum through the air valve 5 of the mounting seat 3. S9. After vacuuming the core rod B position for the set time, separate the mounting bases 3 at both ends of the core rod B from the special bracket 16, and put the core rod B and core rod A together into the autoclave 14 for hot pressing.

[0059] like Figure 9 As shown, the core rod B can be moved to the bracket 17 on the upper side of the storage area 15, and then moved to the autoclave 14 via the storage area 15.

[0060] In a preferred embodiment, in order to further reduce the vacuuming time of the vacuum bag 1, before step S1, the vacuum bag 1 is pre-installed on the core rod A and the core rod B, and one end of the vacuum bag 1 is pre-installed on the mounting seat 3 at the corresponding end of the core rod.

[0061] It should be noted that, regarding the temperature control of storage area 15, in a preferred embodiment, the entire work area can be kept at a constant temperature within a set range, and storage area 15 is only used to store the core rod A on the bracket 17. Alternatively, a movable cover can be provided, which covers storage area 15 and is equipped with heating wires or a cooling fan to regulate the temperature inside the cover. The cover can be moved by an overhead crane.

[0062] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0063] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A carbon fiber pipe prepreg processing apparatus characterized by comprising: a carbon fiber pipe prepreg processing device; and a carbon fiber pipe prepreg processing device control unit that controls the carbon fiber pipe prepreg processing device. include: A vacuum bag, wherein the vacuum bag is configured as a cylindrical structure and both ends of the vacuum bag are open; The core rod has two supporting ends, each supporting end is provided with a mounting seat, the mounting seat can fix the open end of the vacuum bag, and at least one of the mounting seats has an air guide groove on its inner surface, and the mounting seat has an air guide valve on its outer side corresponding to the position of the air guide groove. An air guiding template includes a hollow air guiding rod and an arc-shaped plate connected to both sides of the air guiding rod. The arc-shaped plate is configured to be elastically deformable. The air guiding rod is provided with air guiding holes at intervals along its length. One end of the vacuum bag is pre-installed on one of the mounting bases. After the pre-impregnated fabric, spacer fabric, and breathable felt are laid on the outer side of the core rod, the air guide rod of the air guide template is set on the lower side of the core rod, so that the arc plate covers the outer side of the breathable felt, and the end of the air guide rod can extend to the air guide groove. The vacuum bag is pulled to another mounting base and fixed so that the two mounting bases and the vacuum bag combine to form a closed space. The vacuum bag is sleeved on the outside of the core rod and the air guide template and can compress the arc plate towards the center of the core rod.

2. The carbon fiber tube prepreg processing apparatus according to claim 1, characterized by, The bottom of the arc-shaped plate is detachably connected to the air guide rod.

3. The prepreg processing apparatus for carbon fiber tubes according to claim 2, characterized in that, The inner surface of the air guide rod is arc-shaped, and the edge of the air guide rod is provided with a slot. The edge of the arc-shaped plate is folded to form a connecting rib that can be inserted into the slot.

4. The prepreg processing apparatus for carbon fiber tubes according to any one of claims 1 to 3, characterized in that, The air guiding template also includes an upper support rod, the inner surface of which is arc-shaped, and guide grooves are provided on both sides of the upper support rod. When the air guide rod is located on the lower side of the core rod and the upper support rod is located on the upper side of the core rod, the upper edge of the arc plate can extend to the guide groove.

5. The prepreg processing apparatus for carbon fiber tubes according to any one of claims 1 to 3, characterized in that, When the air guide rod is installed on the lower side of the core rod, the upper edge of the arc plate can extend to the upper side of the core rod, and the upper edges of the two arc plates can be stacked in an alternating manner.

6. The prepreg processing apparatus for carbon fiber tubes according to any one of claims 1 to 3, characterized in that, The air guiding template also includes an upper support rod, and each side of the upper support rod is provided with an elastically deformable upper plate. The upper plate is set in an arc shape. When the upper support rod is set on the upper side of the core rod and the air guiding rod is set on the lower side of the core rod, the upper plate and the arc plate are overlapped.

7. The prepreg processing apparatus for carbon fiber tubes according to claim 1, characterized in that, The outer end of the air guide rod is formed with a connecting pipe that extends into the air guide groove. The connecting pipe is recessed towards the surface of the core rod, and a rubber block is fitted onto the connecting pipe. The rubber block is inserted into the air guide groove with an interference fit.

8. The prepreg processing apparatus for carbon fiber tubes according to claim 5, characterized in that, The mounting base includes a base body connected to the core rod and a clamping body connected to the base body. The base body includes an inner clamping ring and an outer flange disposed outside the inner clamping ring. The clamping body includes an inner flange that can be connected to the outer flange and an outer clamping ring disposed inside the outer flange. The inner clamping ring and the outer clamping ring can clamp and fix the vacuum bag.

9. A processing method, characterized in that, The prepreg processing apparatus for carbon fiber tubes according to any one of claims 1 to 8, wherein the processing method includes: It provides a dedicated bracket to support the mounting base, an autoclave, and a storage area located on one side of the autoclave, the storage area being able to maintain the temperature within a set temperature range; S1. Install the mounting seats at both ends of the core rod A onto the special bracket, and cover the surface of the core rod A with prepreg cloth; S2. Lay a release fabric on the surface of the prepreg fabric, and cover the surface of the release fabric with a breathable felt. S3. Place the air guide rod under the core rod A, and make the arc plate cover the outside of the breathable felt to complete the arrangement of the air guide template at the core rod A. S4. Place the vacuum bag over the outside of the core rod A and the ventilated template, and evacuate the vacuum through the air valve of the mounting base. S5. Separate the mounting bases at both ends of core rod A from the special bracket, and transfer core rod A to the storage area for continuous vacuuming; S6. Install the mounting bases at both ends of the core rod B on the special bracket. Lay prepreg on the surface of the core rod B, lay release fabric on the surface of the prepreg, and cover the surface of the release fabric with breathable felt. S7. Place the air guide rod under the core rod B, and make the arc-shaped plate cover the outside of the breathable felt to complete the arrangement of the air guide template at the core rod B; S8. Place the vacuum bag over the outside of the core rod B and the ventilated template, and evacuate the vacuum through the air valve of the mounting base. S9. After vacuuming the core rod B position for the set time, separate the mounting bases at both ends of the core rod B from the special bracket, and put the core rod B and core rod A together into the autoclave for hot pressing.

10. The processing method according to claim 9, characterized in that, Before step S1, vacuum bags are pre-installed on core rod A and core rod B, with one end of the vacuum bag pre-installed on the mounting base at the corresponding end of the core rod.

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