Double-curved-surface composite flange ring forming die and forming method

Abstract

The invention provides a double-curved-surface composite flange ring forming die. The double-curved-surface composite flange ring forming die comprises a base and a die assembly base. A reverse ejection ring and a female die are arranged between the base and the die assembly seat, the female die comprises a main body part, an inward edge folding part is arranged at the upper end of the main body part, a cylindrical section forming surface is arranged on the inner wall of the main body part, a positioning table is further arranged on the inner wall of the main body part, and a flange upper curved surface forming surface is arranged on the lower surface of the positioning table; the base and the mold closing seat are tensioned through the mold closing mechanism; a core mold is arranged in the base, and a mounting groove is formed between the inner wall of the lower groove and the core mold; the reverse ejection ring comprises two parts, a lower exhaust gap is formed between the two parts, and a demolding mechanism is arranged on the base corresponding to the matching part; the female die comprises a plurality of split bodies, and an upper exhaust gap is formed between every two adjacent split bodies. According to the double-curved-surface composite flange ring forming die, the upper exhaust gap and the lower exhaust gap are achieved through collaborative design of the split type reverse ejection ring and the female die in cooperation with the positioning structure and the positioning part, high-precision forming and efficient demolding of a double-curved-surface composite flange ring are achieved, and the product size consistency and the surface quality are improved.

Description

Technical Field

[0001] This invention belongs to the field of composite material molding technology, and in particular relates to a hyperboloid composite flange ring molding die and molding method. Background Technology

[0002] Composite material flange rings are widely used in high-end industrial fields such as aerospace, shipbuilding, and automotive manufacturing due to their superior properties such as high strength, high rigidity, and lightweight. However, hyperboloid composite material flange rings are difficult to mold due to their complex geometry. Existing molding methods and mold designs have many problems, such as: complex mold design making it difficult to achieve high-precision molding; defects such as air bubbles and porosity easily generated during the molding process, resulting in unstable molding quality; short mold life, making it difficult to meet the needs of mass production; high overall machining costs; low material utilization; and the inability to achieve lightweighting of metal materials. Currently, there is a lack of dedicated molding dies and processes for hyperboloid composite material flange rings, and existing technologies are insufficient to meet the needs of high-end manufacturing. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a hyperboloid composite flange ring forming mold and forming method.

[0004] To achieve the above objectives, the technical solution created by this invention is implemented as follows: A hyperboloid composite flange ring forming mold includes a base with a lower groove on the upper surface and a mold closing seat with an upper groove on the lower surface, and a hollow hole is opened in the middle of the mold closing seat; A top ring and a female mold are provided between the base and the mold clamping base. The upper end face of the top ring is provided with a flange upper curved surface forming surface. The female mold includes a main body. The upper end of the main body is provided with an inward folded edge. The inner wall of the main body has a cylindrical section forming surface. The inner wall of the main body is also provided with a positioning platform. The lower surface of the positioning platform is provided with a flange upper curved surface forming surface. The base and the mold clamping seat are tightened by the mold clamping mechanism, thereby holding the top ring and the female mold between the two seats. The top ring and the female mold form a forming cavity for the hyperboloid composite flange ring. The base is equipped with a core mold, and the inner wall of the lower groove forms an installation groove with the core mold. The top ring consists of two parts, each with a side wing at the lower end and a mating part on the side wall of the groove. The side wing and the mating part mate to form a lower venting gap between the two parts. A demolding mechanism is provided on the base corresponding to the mating part. Furthermore, the core mold is equipped with a positioning structure, and the female mold includes several segments, each of which is equipped with a positioning part. The positioning part cooperates with the positioning structure to form an upper venting gap between adjacent segments.

[0005] Furthermore, the mold closing mechanism includes a tensioning screw, and the mold closing base is symmetrically provided with several through holes, and the upper surface of the base is provided with connecting holes corresponding to each through hole.

[0006] Furthermore, the upper surface of the mold clamping base is provided with a recessed platform corresponding to the through hole, and the nut part of the tightening screw is submerged in the recessed platform.

[0007] Furthermore, the demolding mechanism includes a demolding hole on the base corresponding to the mating part, the demolding hole communicating with the mating part, and a demolding screw installed on the demolding hole.

[0008] Furthermore, the positioning part is a slot provided on the folded edge of the split part, and the positioning structure is a number of positioning protrusions spaced apart on the outer peripheral wall of the core mold, each positioning protrusion engaging with the slot on its corresponding split part.

[0009] Furthermore, the size of the upper exhaust gap formed between two adjacent parts is 0.02mm-0.05mm.

[0010] Furthermore, the lower exhaust gap between the two parts is 0.01mm-0.03mm.

[0011] A method for forming hyperboloid composite flange rings using the above-mentioned mold includes the following steps: Install the top ring in the mounting groove, and ensure that the side wings of each part of the top ring mate with the corresponding mating part; Hyperbolic composite flange rings are laid layer by layer from the inside to the outside on the core mold; A female mold is installed on the outside of the hyperboloid composite flange ring, and then a mold assembly module is installed. The base and mold assembly base are tightened by the mold assembly mechanism, thereby keeping the hyperboloid composite flange ring in the forming cavity between the top ring and the female mold. The mold containing the hyperboloid composite flange ring is placed in an oven to cure the carbon fiber resin. Loosen the mold closing mechanism, remove the mold closing module, and then use the demolding mechanism to lift the anti-top ring upwards to remove all parts except the core mold. Since there is a demolding taper between the mold closing module and the female mold, the mold separation is easy. After demolding, the split female mold automatically falls off the product. Therefore, remove the hyperboloid composite flange ring to complete the manufacturing process.

[0012] Furthermore, the ply angles are 45° / 0° / -45° / 90° / 0°.

[0013] Compared with existing technologies, the present invention has the following advantages: This invention achieves high-precision molding and efficient demolding of hyperboloid composite flange rings through the coordinated design of a split anti-top ring and a female mold, along with positioning structures and positioning parts to realize upper and lower venting gaps. The split structure of the anti-top ring, combined with the lifting action of the demolding mechanism, decomposes and applies the demolding force in stages, effectively avoiding product damage and mold deformation. Meanwhile, the positioning structure between the female mold segments and the core mold, through slots and protrusions, ensures the alignment accuracy of each module while forming a controllable venting channel. Under the uniform clamping force of the mold closing and tightening mechanism, the entire mold achieves stable sealing of the molding cavity and orderly gas discharge, thereby improving product dimensional consistency and surface quality. Attached Figure Description

[0014] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 A schematic diagram of the structure created by this invention; Figure 2 The front view created for this invention; Figure 3 A schematic diagram of the mold base for the present invention; Figure 4 A schematic diagram of the mold base in the invention from another perspective; Figure 5 for Figure 1 A schematic diagram after removing the mold clamping base; Figure 6 for Figure 5 A diagram showing the result after removing the negative mold; Figure 7 for Figure 6 A schematic diagram after removing the hyperboloid composite flange ring; Figure 8 A schematic diagram of the base portion in this invention; Figure 9 This is a schematic diagram of the base portion from another perspective in the invention. Figure 10 A schematic diagram of the inverted top ring in this invention; Figure 11 This is a schematic diagram of the reverse top ring from another perspective in the invention. Figure 12 This is a schematic diagram of the split structure in the present invention; Figure 13 This is a schematic diagram of the split structure from another perspective in the invention. Figure 14 A schematic diagram of the hyperboloid composite flange ring used in this invention; Figure 15 Exploded view created for this invention; Figure 16 A cross-sectional view created for this invention.

[0015] Explanation of reference numerals in the attached figures: 1-Base; 2-Mold clamping base; 3-Sunken platform; 4-Upper groove; 5-Anti-top ring; 6-Female mold; 7-Main body; 8-Folded edge; 9-Positioning platform; 10-Core mold; 11-Mounting groove; 12-Side wing; 13-Mating part; 14-Lower vent gap; 15-Separated parts; 16-Positioning part; 17-Upper vent gap; 18-Tightening screw; 19-Through hole; 20-Connecting hole; 21-Demolding hole; 22-Demolding screw; 23-Positioning protrusion; 24-Hyperbolic composite flange ring; 25-Hollow hole. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0017] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] A hyperboloid composite flange ring forming die, such as Figures 1 to 16As shown, it includes a base 1 with a lower groove on the upper surface and a mold clamping base 2 with an upper groove 4 on the lower surface; a hollow hole is opened in the middle of the mold clamping base, and a top ring 5 and a female mold 6 are provided between the base and the mold clamping base; the upper end face of the top ring is provided with a flange upper curved surface forming surface. The base and the mold clamping seat are tightened by the mold clamping mechanism, thereby holding the top ring and the female mold between the two seats. The top ring and the female mold form a forming cavity for the hyperboloid composite flange ring. The base is provided with a core mold 10, and the inner wall of the lower groove and the core mold form an installation groove 11. The top ring consists of two parts. Each part has a side wing 12 at its lower end and a mating part 13 on the side wall of the groove. The side wing and the mating part mate to form a lower venting gap 14 between the two parts. A demolding mechanism is provided on the base corresponding to the mating part. Furthermore, the core mold is equipped with a positioning structure. The female mold comprises several segments 15, each segment of which includes a main body 7. The upper end of the main body has an inwardly folded edge 8. The inner wall of the main body has a cylindrical segment forming surface, and the inner wall of the main body is also equipped with a positioning platform 9. The lower surface of the positioning platform has a flange upper curved surface forming surface. Each segment is equipped with a positioning part 16, which cooperates with the positioning structure to form an upper venting gap 17 between adjacent segments.

[0021] The base and mold clamping seat are tightened by the mold clamping mechanism, holding the ejector ring and the female mold between the two seats to form a molding cavity. This integral frame structure ensures the stability and sealing of the mold during high-pressure molding, preventing material leakage and deformation. The ejector ring adopts a two-part split design, with side wings at the lower end of each part, which mate with the mating part of the groove sidewall of the base, and a lower venting gap is formed between the two parts. This design not only enables quick assembly and disassembly of the mold, but more importantly, it can effectively expel gas from the mold cavity during molding, avoiding the generation of bubble defects. At the same time, the female mold adopts a multi-part split structure, with a positioning part on each part, which mates with the positioning structure on the core mold. An upper venting gap is formed between adjacent parts. This split design, combined with the positioning structure, ensures the precise alignment of each part of the female mold and forms a multi-layered venting channel system, allowing gas to be smoothly discharged from both the top and bottom. Since a hollow hole 25 is opened in the middle of the mold clamping seat, the gas inside the mold can be smoothly discharged to the outside of the mold, completely solving the problem of insufficient product density caused by poor venting in traditional molds.

[0022] A demolding mechanism is provided on the base corresponding to the mating part. This mechanism works in conjunction with the two separate structures of the anti-top ring, and can push the two parts of the anti-top ring separately during demolding to achieve demolding. The inner wall of the female mold body is provided with a positioning platform, and the lower surface of the positioning platform is provided with a flange upper curved surface forming surface. This structure ensures the forming accuracy of the flange ring upper curved surface. Together with the flange upper curved surface forming surface on the upper end face of the anti-top ring, it ensures the geometric accuracy and surface quality of the hyperboloid composite flange ring.

[0023] In summary, the mold of the present invention achieves a comprehensive technical effect of high molding quality, high demolding efficiency, and good venting performance through the coordinated cooperation of a split structure, a multi-level venting system, a positioning and fitting structure, and a demolding mechanism.

[0024] The mold clamping mechanism includes a tension screw 18, and a number of through holes 19 are symmetrically arranged on the mold clamping base. A connecting hole 20 is provided on the upper surface of the base corresponding to each through hole. As an example, a countersunk platform 3 is provided on the upper surface of the mold clamping base corresponding to the through holes. The nut part of the tension screw is submerged in the countersunk platform to avoid interference between the tension screw and the outside.

[0025] The tension screws pass through the through holes in the mold clamping base and are then screwed into the connecting holes in the base. By tightening the tension screws, the base and mold clamping base are tightly pulled together, thus firmly holding the ejector ring and the female mold between the two bases to form a stable molding cavity. This symmetrically distributed tension screw structure ensures uniform distribution of the clamping force, preventing uneven loading or deformation of the mold during molding, and guaranteeing the molding accuracy and surface quality of the hyperboloid composite flange ring. At the same time, this structure is simple and reliable, easy to operate and maintain, and improves the service life of the mold and production efficiency.

[0026] The demolding mechanism includes a demolding hole 21 on the base corresponding to the mating part, which communicates with the mating part. A demolding screw 22 is installed in the demolding hole. When demolding is required, the demolding screw is tightened, causing its upper end to extend into the mating part and push the anti-top ring upwards, thus achieving the demolding operation. To improve stability during the demolding process, in a further improved design, a limiting groove is provided on the lower surface of the side wing. The upper end of the demolding screw of the demolding mechanism extends into the limiting groove, and the top of the demolding screw abuts against the bottom of the limiting groove. This demolding mechanism has a simple structure and is easy to operate. Sufficient demolding force is generated by tightening the screw to separate the molded product from the anti-top ring. At the same time, the stroke of the demolding screw can be precisely controlled to avoid product damage or demolding difficulties caused by excessive or insufficient demolding force. This mechanism, in conjunction with the split anti-top ring structure, enables step-by-step demolding, effectively reducing the single demolding force and improving demolding efficiency and product quality.

[0027] The positioning part is a slot provided on the folded edge of the split mold, and the positioning structure is a number of positioning protrusions 23 spaced apart on the outer peripheral wall of the core mold. Each positioning protrusion engages with the slot on its corresponding split mold part. During the mold closing process, the several split mold parts surround the core mold, and the slots on the folded edges of each split mold part precisely engage with the corresponding positioning protrusions on the outer wall of the core mold. This engagement structure not only provides precise radial and circumferential constraints for each split mold part, effectively preventing displacement or misalignment under molding pressure and ensuring the geometric accuracy of the molding cavity, but also naturally forms a controllable upper venting gap at the interface between the slots and protrusions of adjacent split mold parts. This structure cleverly combines positioning and venting functions, optimizing the gas venting path and improving the product molding quality while ensuring the repeatability accuracy of mold assembly.

[0028] The upper venting gap between two adjacent parts is 0.02mm-0.05mm. In a further improved design, the upper venting gap increases sequentially from bottom to top, with the venting gap at the largest gap being at least 0.01mm larger than the venting gap at the smallest gap. Additionally, the lower venting gap between the two parts is 0.01mm-0.03mm. This "smaller at the bottom, larger at the top" venting gap layout cleverly utilizes the natural upward movement of gas during hot pressing, creating a directional effect. This considers both the gas accumulation characteristics at different locations within the mold cavity and the material flow resistance at different points, ensuring smooth gas discharge while effectively blocking resin.

[0029] A method for forming a hyperboloid composite flange ring includes the following steps: Install the top ring in the mounting groove, and ensure that the side wings of each part of the top ring mate with the corresponding mating part; Hyperbolic composite flange rings are laid layer by layer from the inside to the outside on the mandrel; for example, the layup angle is 45° / 0° / -45° / 90° / 0°. A female mold is installed on the outside of the hyperboloid composite flange ring, and then a mold assembly module is installed. The base and mold assembly base are tightened by the mold assembly mechanism, thereby keeping the hyperboloid composite flange ring in the forming cavity between the top ring and the female mold. The mold containing the hyperboloid composite flange ring is placed in an oven to cure the carbon fiber resin; for example, the curing process is as follows: Preheating: 30-50°C, 10-15 minutes; Heating: 50-180°C, 60-90 minutes; Curing: 180°C, 120-180 minutes; Cooling: 180-30°C, 60-90 minutes.

[0030] Demolding: First, loosen the mold closing mechanism and remove the mold closing module. Then, use the demolding mechanism to lift the anti-top ring upwards and remove all parts except the core mold. Since there is a demolding taper between the mold closing module and the female mold, the mold separation is easy. After demolding, the split female mold automatically falls off the product. Therefore, remove the hyperboloid composite flange ring 24 to complete the manufacturing process.

[0031] In an optional embodiment, microcapsules or hollow fibers are disposed within the layup of the cylindrical section of the hyperboloid composite flange ring and the flange joint. When microcapsules are used, the microcapsule wall material is a thermoplastic polymer (such as polyurethane or epoxy resin), and the core material is a liquid healing agent containing epoxy groups or thiol groups; when hollow fibers are used, the hollow fibers are glass fibers or carbon fibers, and the inner cavity is filled with a liquid healing agent containing epoxy groups or thiol groups. Using this embodiment, at the end of curing, after the resin system has gelled at 180°C, the temperature is rapidly increased to 220°C and held for 30 seconds using a mold heating system. This overheating shock causes some of the microcapsule wall material to soften and crack (or some of the hollow fibers to expand due to heat, generating microcracks), releasing the liquid healing agent. The healing agent rapidly diffuses into the surrounding resin matrix at high temperature, reacting with incompletely cross-linked resin molecules to form a preliminary local self-healing network. Subsequently, the material is cooled to room temperature according to the standard curing regime cooling procedure, locking this "healing ability" within the material.

[0032] When microcracks develop at the junction of the cylindrical section and the flange due to stress concentration or impact load during rocket launch, the stress field at the crack tip will cause the surrounding unbroken microcapsules or hollow fibers to continue releasing healing agents to fill and repair the microcracks. Furthermore, the increased temperature during rocket launch can further enhance the effect of the healing agents in filling and repairing microcracks, thereby achieving the self-healing function of the material and improving the product's service life and reliability.

[0033] In a further improved design, during demolding, a demolding mechanism first pushes a portion of the ejector ring upwards, causing the other part of the molded product to detach. At this point, the two parts of the ejector ring are offset from each other, reducing demolding resistance. Subsequently, the demolding mechanism continues to push the other part of the ejector ring upwards, completing the demolding of the entire ejector ring. Finally, the several segments of the female mold are removed separately, achieving smooth demolding of the female mold. This step-by-step demolding method decomposes the overall demolding force into multiple smaller forces, effectively avoiding problems such as product damage, mold damage, or product deformation caused by excessive demolding force. Simultaneously, the upper and lower venting gaps ensure a smooth demolding process and stable product quality.

[0034] A vibration generator, comprising a piezoelectric ceramic transducer or an electromagnetic vibrator, is installed on the base or mold clamping seat. The control system applies ultrasonic waves at a frequency of 20-40 kHz or mechanical vibrations at a frequency of 50-200 Hz during the resin gelation stage according to a preset program. The vibration amplitude is controlled at 5-50 μm, and the duration is 3-10 minutes. This vibration field effectively promotes resin wetting of the fibers, removes micro-bubbles from the mold cavity, improves resin flow and filling in complex curved areas, and accelerates the cross-linking reaction of resin molecular chains through vibration energy, shortening the curing time by approximately 15-30%. It also significantly reduces the internal porosity of the product to below 1%, improves interlaminar shear strength and flexural strength, ultimately resulting in a dense, high-performance hyperboloid composite flange ring product.

[0035] In an optional embodiment, a vibration generator is installed on the base or mold clamping seat. This device includes an electromagnetic vibrator, which, through a control system, applies ultrasonic waves at a frequency of 20-40 kHz or mechanical vibrations at a frequency of 50-200 Hz during the resin gelation stage according to a preset program. The vibration amplitude is controlled at 5-50 μm, and the duration is 3-10 minutes. This vibration field can effectively promote resin wetting of fibers, remove micro-bubbles in the mold cavity, improve resin flow and filling in complex curved areas, and accelerate the cross-linking reaction of resin molecular chains through vibration energy, shortening the curing time by about 15-30%, significantly reducing the internal porosity of the product to below 1%, and improving interlaminar shear strength and flexural strength, ultimately obtaining a dense, high-performance hyperboloid composite flange ring product.

[0036] In an optional embodiment, a functional ring is installed within the mounting groove of the base. The functional ring is made of a metal material with a thermal expansion greater than that of the base and the mold clamping seat. Specifically, the functional ring can be made of copper alloy, aluminum alloy, or titanium alloy. During thermosetting, as the mold temperature rises to the curing temperature (typically 120-180°C), the axial deformation caused by the thermal expansion of the metal ring creates a continuous compressive force on the hyperboloid composite flange ring. This actively applied compressive force compensates for resin curing shrinkage, promotes full resin impregnation of the fibers, removes micro-bubbles from the mold cavity, improves product density, and simultaneously improves the resin flow and filling effect in complex curved areas. This reduces the internal porosity of the product and increases interlaminar shear strength and flexural strength, ultimately resulting in a dimensionally stable, internally dense, and high-performance hyperboloid composite flange ring product.

[0037] This invention achieves high-precision molding and efficient demolding of hyperboloid composite flange rings through the coordinated design of a split anti-top ring and a female mold, along with positioning structures and positioning parts to realize upper and lower venting gaps. The split structure of the anti-top ring, combined with the lifting action of the demolding mechanism, decomposes and applies the demolding force in stages, effectively avoiding product damage and mold deformation. Meanwhile, the positioning structure between the female mold segments and the core mold, through slots and protrusions, ensures the alignment accuracy of each module while forming a controllable venting channel. Under the uniform clamping force of the mold closing and tightening mechanism, the entire mold achieves stable sealing of the molding cavity and orderly gas discharge, thereby improving product dimensional consistency and surface quality.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A molding die for forming hyperboloid composite flange rings, characterized in that: It includes a base with a lower groove on the upper surface and a mold clamping base with an upper groove on the lower surface, and the mold clamping base has a hollow hole in the middle; A top ring and a female mold are provided between the base and the mold clamping base. The upper end face of the top ring is provided with a flange upper curved surface forming surface. The female mold includes a main body. The upper end of the main body is provided with an inward folded edge. The inner wall of the main body has a cylindrical section forming surface. The inner wall of the main body is also provided with a positioning platform. The lower surface of the positioning platform is provided with a flange upper curved surface forming surface. The base and the mold clamping seat are tightened by the mold clamping mechanism, thereby holding the top ring and the female mold between the two seats. The top ring and the female mold form a forming cavity for the hyperboloid composite flange ring. The base is equipped with a core mold, and the inner wall of the lower groove forms an installation groove with the core mold. The top ring consists of two parts, each with a side wing at the lower end and a mating part on the side wall of the groove. The side wing and the mating part mate to form a lower venting gap between the two parts. A demolding mechanism is provided on the base corresponding to the mating part. Furthermore, the core mold is equipped with a positioning structure, and the female mold includes several segments, each of which is equipped with a positioning part. The positioning part cooperates with the positioning structure to form an upper venting gap between adjacent segments.

2. The hyperboloid composite flange ring forming mold according to claim 1, characterized in that: The mold closing mechanism includes a tensioning screw, and the mold closing base is symmetrically provided with several through holes. The upper surface of the base is provided with connecting holes corresponding to each through hole.

3. The hyperboloid composite flange ring forming mold according to claim 2, characterized in that: The upper surface of the mold base is provided with a recessed platform corresponding to the through hole, and the nut part of the tightening screw is submerged in the recessed platform.

4. The hyperboloid composite flange ring forming mold according to claim 1, characterized in that: The demolding mechanism includes a demolding hole on the base corresponding to the mating part, the demolding hole communicating with the mating part, and a demolding screw installed on the demolding hole.

5. The hyperboloid composite flange ring forming mold according to claim 1, characterized in that: The positioning part is a slot provided on the folded edge of the split part, and the positioning structure is a number of positioning protrusions spaced apart on the outer peripheral wall of the core mold. Each positioning protrusion engages with the slot on its corresponding split part.

6. The hyperboloid composite flange ring forming mold according to claim 1, characterized in that: The size of the upper exhaust gap formed between two adjacent parts is 0.02mm-0.05mm.

7. The hyperboloid composite flange ring forming mold according to claim 1, characterized in that: The gap between the two parts is 0.01mm-0.03mm.

8. A method for forming a hyperboloid composite flange ring using the mold described in any one of claims 1 to 7, characterized in that, Includes the following steps: Install the top ring in the mounting groove, and ensure that the side wings of each part of the top ring mate with the corresponding mating part; Hyperbolic composite flange rings are laid layer by layer from the inside to the outside on the core mold; A female mold is installed on the outside of the hyperboloid composite flange ring, and then a mold assembly module is installed. The base and mold assembly base are tightened by the mold assembly mechanism, thereby keeping the hyperboloid composite flange ring in the forming cavity between the top ring and the female mold. The mold containing the hyperboloid composite flange ring is placed in an oven to cure the carbon fiber resin. Loosen the mold closing mechanism, remove the mold closing module, and then use the demolding mechanism to lift the anti-top ring upwards to remove all parts except the core mold. Remove the hyperboloid composite flange ring to complete the manufacturing process.

9. The method for forming a hyperboloid composite flange ring according to claim 8, characterized in that: The ply angles are 45° / 0° / -45° / 90° / 0°.

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