Double-curved-surface TRT sandwich composite material plate, mold and manufacturing method

Abstract

The invention provides a hyperboloid TRT sandwich composite material plate, a mold and a manufacturing method, the hyperboloid TRT sandwich composite material plate comprises an outer titanium plate, a rubber plate and an inner titanium plate, the rubber plate is located between the outer titanium plate and the inner titanium plate, the thickness of the outer titanium plate and the inner titanium plate is t, the thickness of the rubber plate is T, and the outer titanium plate, the rubber plate and the inner titanium plate are all curved plates; the high strength, rigidity and good sound transmission performance of titanium alloy are combined, meanwhile, the noise reduction, sound absorption and shock absorption characteristics of rubber are combined, and the composite material is suitable for occasions needing to bear high-strength loads and having sound transmission and noise reduction performance.

Description

Technical Field

[0001] The present invention relates to the technical field of noise reduction materials, and in particular to a hyperbolic TRT sandwich composite material plate, a mould and a manufacturing method thereof. Background Art

[0002] In the field of acoustic engineering, sound transmission and noise reduction performance are important indicators to measure the quality of structural materials. In order to achieve good sound transmission and noise reduction effects, a variety of materials are widely used in various acoustic devices and products. These materials mainly include alloy steel, reinforced plastic, fiberglass, rubber and titanium alloy.

[0003] Alloy steel, as a classic structural material, is known for its high strength and good rigidity. It can maintain structural stability under heavy loads. However, it is precisely its high strength that leads to the insufficiency of alloy steel in sound transmission. Sound waves are greatly hindered when passing through alloy steel materials, which seriously reduces the sound transmittance. This shortcoming limits the application of alloy steel in acoustic devices that require good sound transmission.

[0004] In order to overcome the shortcomings of alloy steel in sound transmission, researchers have developed new acoustic materials such as reinforced plastics, fiberglass and rubber. These materials have significantly improved their acoustic properties by adjusting their internal structure and chemical composition, allowing sound waves to pass through the materials more smoothly. Reinforced plastics and fiberglass, in particular, not only have excellent sound transmission properties, but are also light in weight and have good corrosion resistance. However, these materials have obvious shortcomings in strength and impact resistance. In practical applications, they are often unable to withstand large external forces and impacts, which limits their application in situations requiring high strength and durability. In addition, these materials also have the problem of decreased acoustic and mechanical properties due to aging, further limiting their scope of application.

[0005] As a high-performance metal material, titanium alloy has attracted attention in the field of acoustics due to its unique physical and chemical properties. Titanium alloy has the advantages of good sound transmission and high specific strength. However, although titanium alloy performs well in sound transmission, its noise reduction effect is weak, which means that titanium alloy is not the best choice in acoustic devices that need to achieve good sound transmission and noise reduction performance at the same time.

[0006] In summary, the above-mentioned materials are difficult to meet the performance requirements of sound transmission, noise reduction and high strength at the same time. Patent CN101139860A discloses a metal composite panel with a hollow grid sandwich layer and a manufacturing method thereof, which uses multiple layers of materials for superposition and composite, but still cannot meet the performance requirements of sound transmission, noise reduction and high strength at the same time.

[0007] Therefore, developing a new structural material that has high strength, good sound transmission and excellent noise reduction effect has become a technical problem that needs to be solved urgently in the field of acoustic engineering. Summary of the invention

[0008] In view of this, the present invention aims to propose a hyperbolic TRT sandwich composite material panel, a mold and a manufacturing method to solve the problem that the materials in the prior art cannot simultaneously meet the requirements of sound transmission, noise reduction and high strength performance.

[0009] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0010] A hyperbolic TRT sandwich composite material plate comprises an outer titanium plate, a rubber plate and an inner titanium plate, wherein the rubber plate is located between the outer titanium plate and the inner titanium plate, the thickness of the outer titanium plate and the inner titanium plate is t, the thickness of the rubber plate is T, and the outer titanium plate, the rubber plate and the inner titanium plate are all curved plates.

[0011] The hyperbolic TRT sandwich composite material panel described in the present application combines the high strength, rigidity and good sound transmission performance of titanium alloy with the noise reduction, sound absorption and shock absorption properties of rubber. It is suitable for occasions that need to withstand high-intensity loads and have both sound transmission and noise reduction performance.

[0012] A mold for making the aforementioned hyperbolic TRT sandwich composite material panel, comprising an outer panel mold, an inner panel mold and a composite molding mold, wherein the outer panel mold is used to make an outer titanium plate, the inner panel mold is used to make an inner titanium plate, and the composite molding mold is used to make the outer titanium plate and the inner titanium plate into a hyperbolic TRT sandwich composite material panel.

[0013] This setup can efficiently and accurately manufacture hyperbolic TRT sandwich composite panels through the precise coordination of the outer panel mold, the inner panel mold and the composite molding mold.

[0014] Furthermore, the outer panel mold includes an outer concave mold and an outer convex mold, the radius of the outer concave mold is R, and the radius of the outer convex mold is Rt; the inner panel mold includes an inner concave mold and an inner convex mold, the radius of the inner concave mold is RtT, and the radius of the inner convex mold is RT-2t; the composite molding mold includes a composite concave mold and a composite convex mold, the radius of the composite concave mold is R, and the radius of the composite convex mold is RT-2t.

[0015] This design can accurately control the thickness and shape of the outer titanium plate and the inner titanium plate, ensuring that the thickness of each layer of material is consistent and symmetrical, while avoiding problems such as deformation, bubbles, and uneven pressure during the molding process.

[0016] A method for manufacturing a hyperbolic TRT sandwich composite material plate, used for manufacturing the aforementioned hyperbolic TRT sandwich composite material plate, comprises the steps of:

[0017] S1: Use the outer plate mold to make the outer titanium plate, use the inner plate mold to make the inner titanium plate, and enter S2;

[0018] S2: fix the outer titanium plate in the composite concave die, fix the inner titanium plate on the composite convex die, the inner titanium plate is located at the upper end of the outer titanium plate, and enter S3;

[0019] S3: a surrounding frame is arranged on the upper surface of the outer titanium plate, and the distance between the composite convex die and the composite concave die is adjusted so that the upper end of the surrounding frame abuts against the inner titanium plate and the lower end abuts against the outer titanium plate, and then enters S4;

[0020] S4: inject rubber into the enclosure, then wait for t0 to allow the rubber to vulcanize, and then enter S5;

[0021] S5: After the rubber is cured, a hyperbolic TRT sandwich composite material plate is obtained;

[0022] Among them, t0 is the vulcanization time. After the injection is completed, waiting for t0 time can allow the rubber in the frame to complete vulcanization using its own heat.

[0023] This method can accurately control the thickness and surface shape of the outer titanium plate, inner titanium plate and rubber plate, has good product consistency, fast molding speed and simple production process.

[0024] Furthermore, in step S1, the TA23 titanium alloy sheet is cut according to the design size of the outer titanium plate, and the cut TA23 titanium alloy sheet is hot-pressed by using an outer concave die and an outer convex die to form an outer titanium plate; the TA23 titanium alloy sheet is cut according to the design size of the inner titanium plate, and the cut TA23 titanium alloy sheet is hot-pressed by using an inner concave die and an inner convex die to form an inner titanium plate; when making the inner titanium plate and the outer titanium plate, the molding temperature is 700-800°C, and the mold is removed when the temperature is lower than 300°C.

[0025] This setting can ensure the forming effect and product quality of titanium alloy sheets, avoid unnecessary deformation and stress concentration, extend the life of the mold, reduce material waste, and improve production stability and efficiency.

[0026] Furthermore, in step S2, the composite concave mold is provided with a first fixing device for fixing the outer titanium plate, and the composite convex mold is provided with a second fixing device for fixing the inner titanium plate.

[0027] This setting ensures that the outer and inner titanium plates will not be displaced or offset during the forming process, which not only improves the accuracy and consistency of the forming process, but also optimizes production efficiency, reduces defects in the production process, extends mold life, and ensures the quality of the final product.

[0028] Furthermore, in step S3, the distance between the outer titanium plate and the inner titanium plate is T, the minimum distance between the outer side wall of the frame and the edge of the outer titanium plate is L, and 30 mm ≤ L ≤ 50 mm.

[0029] This arrangement can avoid burning of the rubber sheet when welding the hyperbolic TRT sandwich composite panels, thereby maintaining the performance and structural integrity of the rubber sheet.

[0030] Furthermore, in step S4, the side wall of the surrounding frame is provided with a glue injection hole and an exhaust hole, the glue injection hole is used to inject rubber into the surrounding frame, and the exhaust hole is used to discharge the air in the surrounding frame to facilitate glue injection.

[0031] By arranging the glue injection holes and the exhaust holes on the side wall of the enclosure frame, the glue injection process can be effectively controlled, the filling uniformity of the rubber can be improved, the generation of bubbles can be prevented, and the performance and mechanical stability of the rubber sheet can be ensured.

[0032] Furthermore, the surrounding frame is made of stainless steel.

[0033] This setting not only improves the structural stability, impact resistance and safety of the frame, but also optimizes the overall performance of the hyperbolic TRT sandwich composite panel.

[0034] Compared with the prior art, the hyperbolic TRT sandwich composite material board, mold and manufacturing method described in the present invention have the following advantages:

[0035] 1) It combines the high strength, rigidity and good sound transmission performance of titanium alloy with the noise reduction, sound absorption and shock absorption characteristics of rubber. It is suitable for occasions that need to withstand high-intensity loads and have both sound transmission and noise reduction performance;

[0036] 2) The thickness and curved surface shape of the outer titanium plate, inner titanium plate and rubber plate can be precisely controlled, the product consistency is good, the molding speed is fast and the production process is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic structural diagram of a hyperbolic TRT sandwich composite material plate according to an embodiment of the present invention;

[0038] Figure 2 for Figure 1 A schematic diagram of the structure from the second perspective;

[0039] Figure 3 for Figure 1 A schematic diagram of the structure of the third perspective;

[0040] Figure 4 It is a schematic diagram of the top view of the test model according to an embodiment of the present invention;

[0041] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at AA in the middle.

[0042] Description of reference numerals:

[0043] 1. Outer titanium plate; 2. Inner titanium plate; 21. Avoidance fillet; 3. Rubber plate; 4. Vertical plate; 5. Enclosure; 6. Flange; 100. Hyperbolic TRT sandwich composite material plate; 200. Test model. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0045] Example 1

[0046] like Figure 1-5 As shown, a hyperbolic TRT sandwich composite material plate includes an outer titanium plate 1, a rubber plate 3 and an inner titanium plate 2, wherein the rubber plate 3 is located between the outer titanium plate 1 and the inner titanium plate 2, the thickness of the outer titanium plate 1 and the inner titanium plate 2 is t, the thickness of the rubber plate 3 is T, and the outer titanium plate 1, the rubber plate 3 and the inner titanium plate 2 are all curved plates.

[0047] The hyperbolic TRT sandwich composite panel 100 described in the present application combines the high strength, rigidity and good sound transmission performance of titanium alloy with the noise reduction, sound absorption and shock absorption properties of rubber. It is suitable for occasions that need to withstand high-intensity loads and have both sound transmission and noise reduction performance.

[0048] Preferably, the outer titanium plate 1 and the inner titanium plate 2 are made of TA23 titanium alloy material, and the rubber plate 3 is made of chloroprene rubber.

[0049] A mold for making the aforementioned hyperbolic TRT sandwich composite material panel, comprising an outer panel mold, an inner panel mold and a composite molding mold, wherein the outer panel mold is used to make an outer titanium plate 1, the inner panel mold is used to make an inner titanium plate 2, and the composite molding mold is used to make the outer titanium plate 1 and the inner titanium plate 2 into a hyperbolic TRT sandwich composite material panel 100.

[0050] Specifically, the thickness and curved surface shape of the outer titanium plate 1 and the inner titanium plate 2 can be precisely controlled by the outer plate mold and the inner plate mold, thereby ensuring the overall quality and performance of the composite material plate. The composite molding mold can ensure that the hyperbolic TRT sandwich composite material plate does not dislocate or delaminate during the molding process, and ensure that each layer of material can be evenly stressed and maintain appropriate bonding force. This setting can efficiently and accurately manufacture hyperbolic TRT sandwich composite material plates through the precise coordination of the outer plate mold, the inner plate mold and the composite molding mold.

[0051] As a preferred example of the present application, the outer panel mold includes an outer concave mold and an outer convex mold, the radius of the outer concave mold is R, and the radius of the outer convex mold is Rt; the inner panel mold includes an inner concave mold and an inner convex mold, the radius of the inner concave mold is RtT, and the radius of the inner convex mold is RT-2t; the composite molding mold includes a composite concave mold and a composite convex mold, the radius of the composite concave mold is R, and the radius of the composite convex mold is RT-2t.

[0052] Specifically, this design can accurately control the thickness and shape of the outer titanium plate 1 and the inner titanium plate 2, ensuring that the thickness of each layer of material is consistent and symmetrical, while avoiding deformation, bubbles, uneven pressure and other problems during the molding process. It not only optimizes production efficiency and material utilization, but also improves the quality and structural stability of the composite material plate, ensuring its sound transmission, noise reduction, shock absorption and strength in practical applications.

[0053] A method for manufacturing a hyperbolic TRT sandwich composite material plate, used for manufacturing the aforementioned hyperbolic TRT sandwich composite material plate, comprising the steps of:

[0054] S1: Use the outer plate mold to make the outer titanium plate 1, use the inner plate mold to make the inner titanium plate 2, and enter S2;

[0055] S2: fix the outer titanium plate 1 in the composite concave die, fix the inner titanium plate 2 on the composite convex die, and the inner titanium plate 2 is located at the upper end of the outer titanium plate 1, and enter S3;

[0056] S3: a surrounding frame is arranged on the upper surface of the outer titanium plate 1, and the distance between the composite convex die and the composite concave die is adjusted so that the upper end of the surrounding frame abuts against the inner titanium plate 2 and the lower end abuts against the outer titanium plate 1, and then enter S4;

[0057] S4: inject rubber into the enclosure, then wait for t0 to allow the rubber to vulcanize, and then enter S5;

[0058] S5: After the rubber is cured, a hyperbolic TRT sandwich composite material plate 100 is obtained;

[0059] Among them, t0 is the vulcanization time. After the injection is completed, waiting for t0 time can allow the rubber in the frame to complete vulcanization using its own heat.

[0060] Specifically, the outer titanium plate 1 and the inner titanium plate 2 are respectively made by the outer plate mold and the inner plate mold, which can ensure that the size and curved surface shape of the outer titanium plate 1 and the inner titanium plate 2 meet the design requirements and improve the precision. The frame can ensure that the spacing between the outer titanium plate 1 and the inner titanium plate 2 is consistent, which is directly related to the thickness of the rubber plate 3. The upper end of the frame contacts the inner titanium plate 2, and the lower end contacts the outer titanium plate 1, providing a stable structure to ensure that the thickness of the rubber layer is uniform and stable, thereby avoiding inconsistent thickness during the molding process; this method can accurately control the thickness and curved surface shape of the outer titanium plate 1, the inner titanium plate 2 and the rubber plate 3, the product consistency is good, the molding speed is fast, and the production process is simple.

[0061] As a preferred example of the present application, in step S1, the TA23 titanium alloy sheet is cut according to the design size of the outer titanium plate 1, and the cut TA23 titanium alloy sheet is hot-pressed by using an outer concave die and an outer convex die to form an outer titanium plate 1; the TA23 titanium alloy sheet is cut according to the design size of the inner titanium plate 2, and the cut TA23 titanium alloy sheet is hot-pressed by using an inner concave die and an inner convex die to form an inner titanium plate 2; when making the inner titanium plate 2 and the outer titanium plate 1, the forming temperature is 700-800°C, and the mold is removed when the temperature is lower than 300°C; using hot pressing to make the inner titanium plate 2 and the outer titanium plate 1 belongs to the prior art and will not be repeated here.

[0062] Specifically, TA23 titanium alloy has excellent strength, high temperature resistance and good corrosion resistance. The outer titanium plate 1 and the inner titanium plate 2 are made of TA23 titanium alloy plates, which can ensure the stability of the hyperbolic TRT sandwich composite material plate in high strength and long-term use; the molding temperature is set between 700-800°C, which can give full play to the plasticity of the TA23 titanium alloy plate and ensure its smooth molding during the hot pressing process. When the temperature drops below 300°C, the plasticity of the material decreases, the hardness increases, and the titanium alloy plate is relatively stable. The mold is released at this temperature, which can effectively avoid deformation or cracking caused by high temperature residual stress during the molding process; this setting can ensure the molding effect and product quality of the titanium alloy plate, avoid unnecessary deformation and stress concentration, extend the life of the mold, reduce material waste, and at the same time improve the stability and efficiency of production.

[0063] As a preferred example of the present application, in step S2, the composite die is provided with a first fixing device for fixing the outer titanium plate 1, and the composite punch is provided with a second fixing device for fixing the inner titanium plate 2.

[0064] Specifically, this arrangement can ensure that the outer titanium plate 1 and the inner titanium plate 2 will not be displaced or offset during the forming process, which not only improves the precision and consistency of the forming process, but also optimizes production efficiency, reduces defects in the production process, prolongs the life of the mold, and ensures the quality of the final product. The first fixing device and the second fixing device belong to the prior art and will not be described in detail here.

[0065] As a preferred example of the present application, in step S3, the distance between the outer titanium plate 1 and the inner titanium plate 2 is T, the minimum distance between the outer side wall of the frame and the edge of the outer titanium plate 1 is L, and 30mm≤L≤50mm.

[0066] Specifically, by setting the distance between the outer side wall of the frame and the edge of the outer titanium plate 1 to L, it is possible to avoid burning the rubber plate 3 when welding the hyperbolic TRT sandwich composite plate 100, thereby maintaining the performance and structural integrity of the rubber plate 3.

[0067] Preferably, the frame is formed by four baffles, and adjacent baffles are movably connected, such as by snap-fitting, bolting, etc. This belongs to the prior art and will not be described in detail. This design facilitates the removal of the frame after the rubber sheet 3 is manufactured.

[0068] As a preferred example of the present application, in step S4, the side wall of the frame is provided with a glue injection hole and an exhaust hole, the glue injection hole is used to inject rubber into the frame, and the exhaust hole is used to discharge the air in the frame to facilitate glue injection.

[0069] Specifically, by setting the injection holes and the exhaust holes on the side wall of the frame, the injection process can be effectively controlled, the filling uniformity of the rubber can be improved, the generation of bubbles can be prevented, and the performance and mechanical stability of the rubber sheet 3 can be ensured. At the same time, this design also optimizes the vulcanization process, improves production efficiency, reduces the scrap rate, and improves the quality and reliability of the hyperbolic TRT sandwich composite material panel.

[0070] As a preferred example of the present application, the surrounding frame is made of stainless steel.

[0071] Specifically, this arrangement not only improves the structural stability, impact resistance and safety of the enclosure frame, but also optimizes the overall performance of the hyperbolic TRT sandwich composite panel.

[0072] In order to perform acoustic and water pressure tightness testing on the TRT sandwich composite material panel 100, a test model 200 needs to be made, such as Figure 4-5 shown.

[0073] After four hyperbolic TRT sandwich composite panels 100 and three vertical panels 4 are spliced ​​together, the hyperbolic TRT sandwich composite panels 100 and the vertical panels 4 are welded together to form an experimental panel with a format of 900×800 mm.

[0074] The vertical plate 4 is made of TA23 titanium alloy material.

[0075] The edge of the test plate is welded to the enclosure 5 , which is made of TA23 titanium alloy material, and there is a continuous tight weld between the edge of the test plate and the enclosure 5 .

[0076] Preferably, the four corners of the inner titanium plate 2 are all provided with avoidance fillets 21, and the arc edge of the avoidance fillet 21 is a 1 / 4 circle. The avoidance fillet 21 is used for the filling of protective gas and the exhaust of gas during the welding of titanium alloy plates.

[0077] A flange 6 is provided at the lower end of the enclosure 5, and the flange 6 is used to close the test model 200 so as to perform a water pressure tightness test on the outer titanium plate 1 of the hyperbolic TRT sandwich composite material plate.

[0078] After testing, it was found that the hyperbolic TRT sandwich composite panels 100 manufactured using the technical solution of the present application passed the acoustic test and the tightness test, and achieved the design goal.

[0079] The hyperbolic TRT sandwich composite material panel, mold and manufacturing method described in the present application have the following advantages: 1) It combines the high strength, rigidity and good sound transmission performance of titanium alloy, and at the same time combines the noise reduction, sound absorption and shock absorption characteristics of rubber, and is suitable for occasions that need to withstand high-intensity loads and have both sound transmission and noise reduction performance; 2) It can accurately control the thickness and curved surface shape of the outer titanium plate 1, the inner titanium plate 2 and the rubber plate 3, the product consistency is good, the molding speed is fast, and the production process is simple.

[0080] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A hyperbolic TRT sandwich composite material panel, characterized in that: The invention comprises an outer titanium plate (1), a rubber plate (3) and an inner titanium plate (2), wherein the rubber plate (3) is located between the outer titanium plate (1) and the inner titanium plate (2), the thickness of the outer titanium plate (1) and the inner titanium plate (2) is t, the thickness of the rubber plate (3) is T, and the outer titanium plate (1), the rubber plate (3) and the inner titanium plate (2) are all curved plates.

2. A mold for making the hyperbolic TRT sandwich composite material panel according to claim 1, characterized in that: It comprises an outer plate mould, an inner plate mould and a composite forming mould, wherein the outer plate mould is used to make an outer titanium plate (1), the inner plate mould is used to make an inner titanium plate (2), and the composite forming mould is used to make the outer titanium plate (1) and the inner titanium plate (2) into a hyperbolic TRT sandwich composite material plate (100).

3. The mold according to claim 2, characterized in that: The outer panel mold includes an outer concave mold and an outer convex mold, the radius of the outer concave mold is R, and the radius of the outer convex mold is Rt; the inner panel mold includes an inner concave mold and an inner convex mold, the radius of the inner concave mold is RtT, and the radius of the inner convex mold is RT-2t; the composite molding mold includes a composite concave mold and a composite convex mold, the radius of the composite concave mold is R, and the radius of the composite convex mold is RT-2t.

4. A method for manufacturing a hyperbolic TRT sandwich composite material panel, using the mold according to claim 2 to manufacture the hyperbolic TRT sandwich composite material panel according to claim 1, characterized in that: Includes steps: S1: using an outer plate mold to make an outer titanium plate (1), using an inner plate mold to make an inner titanium plate (2), and then entering S2; S2: fix the outer titanium plate (1) in the composite concave die, fix the inner titanium plate (2) on the composite convex die, wherein the inner titanium plate (2) is located at the upper end of the outer titanium plate (1), and enter S3; S3: a surrounding frame is arranged on the upper surface of the outer titanium plate (1), and the distance between the composite convex mold and the composite concave mold is adjusted so that the upper end of the surrounding frame abuts against the inner titanium plate (2) and the lower end abuts against the outer titanium plate (1), and then enters S4; S4: inject rubber into the enclosure, then wait for t0 to allow the rubber to vulcanize, and then enter S5; S5: After the rubber is cured, a hyperbolic TRT sandwich composite material plate (100) is obtained; Among them, t0 is the vulcanization time. After the injection is completed, waiting for t0 time can allow the rubber in the frame to complete vulcanization using its own heat.

5. The method for manufacturing a hyperbolic TRT sandwich composite material panel according to claim 4, characterized in that: In step S1, the TA23 titanium alloy sheet is cut according to the design size of the outer titanium plate (1), and the cut TA23 titanium alloy sheet is hot-pressed by using an outer concave mold and an outer convex mold to form the outer titanium plate (1); the TA23 titanium alloy sheet is cut according to the design size of the inner titanium plate (2), and the cut TA23 titanium alloy sheet is hot-pressed by using an inner concave mold and an inner convex mold to form the inner titanium plate (2); when manufacturing the inner titanium plate (2) and the outer titanium plate (1), the molding temperature is 700-800°C, and the mold is removed when the temperature is lower than 300°C.

6. The method for manufacturing a hyperbolic TRT sandwich composite material panel according to claim 4, characterized in that: In step S2, the composite concave mold is provided with a first fixing device for fixing the outer titanium plate (1), and the composite convex mold is provided with a second fixing device for fixing the inner titanium plate (2).

7. The method for manufacturing a hyperbolic TRT sandwich composite material panel according to claim 4, characterized in that: In step S3, the distance between the outer titanium plate (1) and the inner titanium plate (2) is T, and the minimum distance between the outer side wall of the surrounding frame and the edge of the outer titanium plate (1) is L, 30mm≤L≤50mm.

8. The method for manufacturing a hyperbolic TRT sandwich composite material panel according to claim 4, characterized in that: In step S4, a glue injection hole and an exhaust hole are provided on the side wall of the surrounding frame, wherein the glue injection hole is used to inject rubber into the surrounding frame, and the exhaust hole is used to exhaust the air in the surrounding frame.

9. The method for manufacturing a hyperbolic TRT sandwich composite material panel according to claim 8, characterized in that: The surrounding frame is made of TA23 titanium alloy material.

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