A kind of double-curved-surface TRT sandwich composite panel, mold and manufacturing method

Abstract

The application provides a double-curved-surface TRT sandwich composite plate, a mold and a manufacturing method, which comprise 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 application combines the high strength, rigidity and good sound transmission performance of titanium alloy, and combines the noise reduction, sound absorption and shock absorption characteristics of rubber, and is suitable for occasions which need to bear high strength load and have sound transmission and noise reduction performance.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of noise reduction materials, in particular to a double-curved-surface TRT sandwich composite plate, a mold and a manufacturing method. BACKGROUND

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

[0003] Alloy steel is a classic structural material known for its high strength and good rigidity. It can maintain the stability of the structure under a large load. However, the high strength of alloy steel leads to its poor sound transmission performance. Sound waves are greatly hindered when passing through alloy steel, which severely reduces the sound transmission rate. This shortcoming limits the application of alloy steel in acoustic devices that require good sound transmission performance.

[0004] In order to overcome the shortcomings of alloy steel in sound transmission performance, researchers have developed new acoustic materials such as reinforced plastic, glass steel and rubber. These materials significantly improve the acoustic performance of the materials by adjusting their internal structure and chemical composition, allowing sound waves to pass through more smoothly. In particular, reinforced plastic and glass steel not only have excellent sound transmission performance, but also have light weight and good corrosion resistance. However, these materials have obvious shortcomings in strength and impact resistance, making them difficult to withstand large external forces and impacts in practical applications, thereby limiting their application in high-strength and durable environments. In addition, these materials also have the problem of acoustic and mechanical performance degradation due to aging, further limiting their application range.

[0005] Titanium alloy is a high-performance metal material that has attracted attention in the field of acoustics due to its unique physical and chemical properties. Titanium alloy has good sound transmission performance and high specific strength. However, despite its excellent sound transmission performance, titanium alloy has weak noise reduction effect, which means that it is not the best choice for acoustic devices that require both good sound transmission and noise reduction performance.

[0006] In summary, the aforementioned 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 plate with a hollow grid sandwich layer and its manufacturing method, which uses multiple layers of materials for stacking and compounding. However, it still cannot meet the performance requirements of sound transmission, noise reduction and high strength at the same time.

[0007] Therefore, developing a new type of structural material with high strength, good sound transmission performance and excellent noise reduction effect has become a technical problem to be solved in the field of acoustic engineering. SUMMARY

[0008] Therefore, the present application aims to provide a hyperboloidal TRT sandwich composite plate, a mold and a manufacturing method to solve the problem that the material in the prior art cannot simultaneously meet the sound transmission, noise reduction and high strength performance requirements.

[0009] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0010] A hyperboloidal TRT sandwich composite plate, comprising an outer titanium plate, a rubber plate and an inner titanium plate, the rubber plate being located between the outer titanium plate and the inner titanium plate, the thickness of the outer titanium plate and the inner titanium plate being t, the thickness of the rubber plate being T, and the outer titanium plate, the rubber plate and the inner titanium plate all being curved plates.

[0011] The hyperboloidal TRT sandwich composite plate described in the present application combines the high strength, rigidity and good sound transmission performance of titanium alloy, and also combines the noise reduction, sound absorption and shock absorption characteristics of rubber, and is suitable for occasions that need to bear high strength load and also have sound transmission and noise reduction performance.

[0012] A mold for manufacturing the aforementioned hyperboloidal TRT sandwich composite plate, comprising an outer plate mold, an inner plate mold and a composite forming mold, the outer plate mold being used for manufacturing the outer titanium plate, the inner plate mold being used for manufacturing the inner titanium plate, and the composite forming mold being used for manufacturing the hyperboloidal TRT sandwich composite plate from the outer titanium plate and the inner titanium plate.

[0013] This arrangement can efficiently and accurately manufacture the hyperboloidal TRT sandwich composite plate through the precise cooperation of the outer plate mold, the inner plate mold and the composite forming mold.

[0014] Further, the outer plate mold comprises an outer concave die and an outer convex die, the radius of the outer concave die being R, and the radius of the outer convex die being R-t; the inner plate mold comprises an inner concave die and an inner convex die, the radius of the inner concave die being R-t-T, and the radius of the inner convex die being R-T-2t; the composite forming mold comprises a composite concave die and a composite convex die, the radius of the composite concave die being R, and the radius of the composite convex die being R-T-2t.

[0015] This design can accurately control the thickness and shape of the outer titanium plate and the inner titanium plate, ensure the uniformity and symmetry of the thickness of each layer of material, and avoid problems such as deformation, bubbles and uneven pressure during the forming process.

[0016] A manufacturing method of a hyperboloidal TRT sandwich composite plate, for manufacturing the aforementioned hyperboloidal TRT sandwich composite plate, comprising the following steps:

[0017] S1: making an outer titanium plate with an outer plate mold and an inner titanium plate with an inner plate mold, entering S2;

[0018] S2: fixing the outer titanium plate in a composite female die and fixing the inner titanium plate on a composite male die, the inner titanium plate being located at the upper end of the outer titanium plate, entering S3;

[0019] S3: setting a surrounding frame on the upper surface of the outer titanium plate, adjusting the distance between the composite male die and the composite female die, 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, entering S4;

[0020] S4: injecting rubber into the surrounding frame, and then waiting for t0 duration to vulcanize the rubber, entering S5;

[0021] S5: after the rubber solidifies, obtaining a hyperboloid TRT sandwich composite plate;

[0022] Wherein, t0 is the vulcanization duration, after the injection of rubber is completed, waiting for t0 duration can make the rubber in the surrounding frame complete vulcanization by using its own heat.

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

[0024] Further, in step S1, the TA23 titanium alloy plate is cut according to the design size of the outer titanium plate, and the cut TA23 titanium alloy plate is hot-pressed by using the cooperation of the outer female die and the outer male die to form the outer titanium plate; the TA23 titanium alloy plate is cut according to the design size of the inner titanium plate, and the cut TA23 titanium alloy plate is hot-pressed by using the cooperation of the inner female die and the inner male die to form the inner titanium plate; when the inner titanium plate and the outer titanium plate are made, the forming temperature is 700-800℃, and the mold is removed when the temperature is lower than 300℃.

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

[0026] Further, in step S2, the composite female die is provided with a first fixing device for fixing the outer titanium plate, and the composite male die is provided with a second fixing device for fixing the inner titanium plate.

[0027] This setting can ensure that the outer titanium plate and the inner titanium plate do not displace or deviate during the forming process, not only improving the precision and consistency of the forming process, but also optimizing the production efficiency, reducing defects in the production process, prolonging the service life of the mold, and ensuring the quality of the final product.

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

[0029] This arrangement can avoid burning the rubber plate when welding the hyperbolic TRT sandwich composite material plate, and maintain the performance and structural integrity of the rubber plate.

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

[0031] By providing the rubber injection hole and the exhaust hole in the side wall of the frame, the rubber injection process can be effectively controlled, the uniformity of rubber filling can be improved, air bubbles can be prevented, and the performance and mechanical stability of the rubber plate can be ensured.

[0032] Further, the frame is made of stainless steel material.

[0033] This arrangement 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 material plate.

[0034] Compared with the prior art, the hyperbolic TRT sandwich composite material plate, the mold and the manufacturing method have the following advantages:

[0035] 1) It combines the high strength, rigidity and good sound transmission performance of titanium alloy, and combines the noise reduction, sound absorption and shock absorption characteristics of rubber, and is suitable for occasions that need to bear high strength load and have sound transmission and noise reduction performance;

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

[0037] Figure 1 is a structure schematic view of the hyperbolic TRT sandwich composite material plate according to the embodiment of the present application;

[0038] Figure 2 is Figure 1 is a structure schematic view from a second perspective;

[0039] Figure 3 is Figure 1 is a structure schematic view from a third perspective;

[0040] Figure 4 is a top view structure schematic view of the test model according to the embodiment of the present application;

[0041] Figure 5 isFigure 4 A schematic diagram of the cross-sectional structure at point AA.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Outer titanium plate; 2. Inner titanium plate; 21. Rounded corners; 3. Rubber plate; 4. Vertical plate; 5. Enclosure plate; 6. Flange; 100. Hyperboloid TRT sandwich composite material plate; 200. Test model. Detailed Implementation

[0044] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] Example 1

[0046] like Figures 1-5 As shown, a hyperboloid TRT sandwich composite material plate includes an outer titanium plate 1, a rubber plate 3, and an inner titanium plate 2. 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, and the thickness of the rubber plate 3 is T. The outer titanium plate 1, the rubber plate 3, and the inner titanium plate 2 are all curved panels.

[0047] The hyperboloid TRT sandwich composite material plate 100 described in this application combines the high strength, rigidity, and good sound transmission performance of titanium alloy with the noise reduction, sound absorption, and vibration damping properties of rubber. It is suitable for occasions that require high-intensity loads while also having 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, and the rubber plate 3 is made of neoprene rubber.

[0049] A mold for manufacturing the aforementioned hyperboloid TRT sandwich composite material panel includes an outer panel mold, an inner panel mold, and a composite molding mold. The outer panel mold is used to manufacture an outer titanium plate 1, the inner panel mold is used to manufacture an inner titanium plate 2, and the composite molding mold is used to form the outer titanium plate 1 and the inner titanium plate 2 into a hyperboloid TRT sandwich composite material panel 100.

[0050] Specifically, the thickness and curvature 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 hyperboloid TRT sandwich composite material plate does not misalign or delaminate during the molding process, and ensure that each layer of material can be uniformly stressed and maintain a suitable bonding force. This setup, through the precise cooperation of the outer plate mold, the inner plate mold and the composite molding mold, can efficiently and accurately manufacture hyperboloid TRT sandwich composite material plates.

[0051] As a preferred example of the present application, the outer plate mold comprises an outer female die and an outer male die, the radius of the outer female die is R, and the radius of the outer male die is R-t; the inner plate mold comprises an inner female die and an inner male die, the radius of the inner female die is R-t-T, and the radius of the inner male die is R-T-2t; the composite forming mold comprises a composite female die and a composite male die, the radius of the composite female die is R, and the radius of the composite male die is R-T-2t.

[0052] Specifically, this design can accurately control the thickness and shape of the outer titanium plate 1 and the inner titanium plate 2, ensure the uniformity and symmetry of the thickness of each layer of material, and avoid problems such as deformation, bubbles, and uneven pressure during the forming 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 performance in actual application.

[0053] A method for manufacturing a hyperboloidal TRT sandwich composite plate, for manufacturing the hyperboloidal TRT sandwich composite plate described above, comprising the steps of:

[0054] S1: manufacturing the outer titanium plate 1 using the outer plate mold and manufacturing the inner titanium plate 2 using the inner plate mold, and entering S2;

[0055] S2: fixing the outer titanium plate 1 in the composite female die and fixing the inner titanium plate 2 on the composite male die, the inner titanium plate 2 being located at the upper end of the outer titanium plate 1, and entering S3;

[0056] S3: setting a surrounding frame on the upper surface of the outer titanium plate 1, adjusting the distance between the composite male die and the composite female die, 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 entering S4;

[0057] S4: injecting rubber into the surrounding frame, and then waiting for t0 duration to vulcanize the rubber, and entering S5;

[0058] S5: after the rubber is cured, obtaining the hyperboloidal TRT sandwich composite plate 100;

[0059] Wherein, t0 is the vulcanization duration, after the injection is completed, waiting for t0 duration can make the rubber in the surrounding frame complete vulcanization by using its own heat.

[0060] Specifically, the outer titanium plate 1 and the inner titanium plate 2 are respectively manufactured by the outer plate die and the inner plate die, 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, improve the precision, and the surrounding 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 surrounding frame is in contact with the inner titanium plate 2, and the lower end is in contact with the outer titanium plate 1, thereby providing a stable structure to ensure that the rubber layer is uniform and stable in thickness, thereby avoiding the situation that the thickness is inconsistent in the forming 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 forming 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 plate is cut according to the design size of the outer titanium plate 1, and the cut TA23 titanium alloy plate is hot-pressed by cooperating the outer concave die and the outer convex die to form the outer titanium plate 1. The TA23 titanium alloy plate is cut according to the design size of the inner titanium plate 2, and the cut TA23 titanium alloy plate is hot-pressed by cooperating the inner concave die and the inner convex die to form the inner titanium plate 2. When the inner titanium plate 2 and the outer titanium plate 1 are manufactured, the forming temperature is 700-800℃, and the mold is removed when the temperature is lower than 300℃. The hot-pressing for manufacturing the inner titanium plate 2 and the outer titanium plate 1 belongs to the prior art, and will not be described here.

[0062] Specifically, the TA23 titanium alloy has excellent strength, high temperature resistance and good corrosion resistance, and the use of the TA23 titanium alloy plate to manufacture the outer titanium plate 1 and the inner titanium plate 2 can ensure the stability of the double-curved-surface TRT sandwich composite material plate in high strength and long-term use. The forming temperature is set between 700-800℃, which can fully develop the plasticity of the TA23 titanium alloy plate, ensure its smooth forming in the hot-pressing process, and when the temperature is below 300℃, the plasticity of the material decreases and the hardness increases, and the titanium alloy plate is relatively stable. The mold is removed at this temperature, which can effectively avoid deformation or cracking caused by high temperature residual stress in the forming process. This setting can ensure the forming effect and product quality of the titanium alloy plate, avoid unnecessary deformation and stress concentration, prolong the service life of the mold, reduce material waste, and improve the stability and efficiency of production.

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

[0064] Specifically, such a setting can ensure that the outer titanium plate 1 and the inner titanium plate 2 do not displace or deviate during the forming process, not only improving the accuracy and consistency of the forming process, but also optimizing production efficiency, reducing defects in the production process, prolonging the service life of the mold, and ensuring 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 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, and the minimum distance between the outer side wall of the frame and the edge of the outer titanium plate 1 is L, 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 as L, it can be avoided that the rubber plate 3 is burned during welding of the hyperbolic TRT sandwich composite material plate 100, and the performance and structural integrity of the rubber plate 3 are maintained.

[0067] Preferably, the frame is surrounded by four baffles, and adjacent baffles are movably connected, such as clamping, bolt connection, etc., which belong to the prior art and will not be described in detail. Such a design facilitates the disassembly of the frame after the rubber plate 3 is completed.

[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 exhaust air in the frame, facilitating glue injection.

[0069] Specifically, by providing glue injection holes and exhaust holes in the side wall of the frame, the glue injection process can be effectively controlled, the uniformity of rubber filling is improved, air bubbles are prevented, the performance and mechanical stability of the rubber plate 3 are ensured, and at the same time, such a design optimizes the vulcanization process, improves production efficiency, reduces the scrap rate, and improves the quality and reliability of the hyperbolic TRT sandwich composite material plate.

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

[0071] Specifically, such a 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 material plate.

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

[0073] ​The hyperbolic TRT sandwich composite plate 100 and the vertical plate 4 are welded together after splicing the four hyperbolic TRT sandwich composite plates 100 and the three vertical plates 4, to form an experimental plate with a width of 900 mm and a length of 800 mm.

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

[0075] The edge of the experimental plate is welded with the surrounding plate 5, the surrounding plate 5 is made of TA23 titanium alloy material, and the edge of the experimental plate and the surrounding plate 5 are continuous and dense welds.

[0076] Preferably, the four corners of the inner titanium plate 2 are provided with a relief round corner 21, the arc edge of the relief round corner 21 is 1 / 4 circle, and the relief round corner 21 is used for filling and discharging of protective gas during welding of the titanium alloy plate.

[0077] The lower end of the surrounding plate 5 is provided with a flange 6, and the flange 6 is used to close the test model 200, so as to implement the water pressure tightness test of the outer titanium plate 1 of the hyperbolic TRT sandwich composite plate.

[0078] Through detection, the hyperbolic TRT sandwich composite plate 100 made by the technical scheme of the application has passed the acoustic test and the tightness test, and has reached the design target.

[0079] The hyperbolic TRT sandwich composite plate, the mold and the manufacturing method have the following advantages: 1) the high strength, rigidity and good sound transmission performance of titanium alloy are combined, and the noise reduction, sound absorption and shock absorption characteristics of rubber are combined, which is suitable for occasions that need to bear high strength load and have sound transmission and noise reduction performance; 2) the thickness and curved surface shape of the outer titanium plate 1, the inner titanium plate 2 and the rubber plate 3 can be accurately controlled, the product consistency is good, the forming speed is fast, and the production process is simple.

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

Claims

1. A mold for making a hyperbolic TRT sandwich composite panel, characterized in that, The application relates to a double-curved-surface TRT sandwich composite material plate manufacturing device and method, and belongs to the field of TRT manufacturing technology.

2. A method for manufacturing a double-curved TRT sandwich composite panel using the mold of claim 1, wherein the double-curved TRT sandwich composite panel of claim 1 is manufactured. The application relates to a double-curved-surface TRT sandwich composite material plate manufacturing device and method, and belongs to the field of TRT manufacturing technology. The application relates to a double-curved-surface TRT sandwich composite material plate manufacturing device and method, and belongs to the field of TRT manufacturing technology. The application relates to a double-curved-surface TRT sandwich composite material plate manufacturing device and method, and belongs to the field of TRT manufacturing technology.

3. The method of making a double-curved TRT sandwich composite panel according to claim 2, wherein, In step S1, a TA23 titanium alloy plate is cut according to the design size of the outer titanium plate (1), the cut TA23 titanium alloy plate is hot-pressed by cooperation of the outer female die and the outer male die, and the outer titanium plate (1) is prepared; a TA23 titanium alloy plate is cut according to the design size of the inner titanium plate (2), the cut TA23 titanium alloy plate is hot-pressed by cooperation of the inner female die and the inner male die, and the inner titanium plate (2) is prepared; when the inner titanium plate (2) and the outer titanium plate (1) are prepared, the forming temperature is 700-800 DEG C, and the mold is started when the temperature is lower than 300 DEG C.

4. The method of making a double-curved TRT sandwich composite panel according to claim 2, wherein, In step S2, the composite female die is provided with a first fixing device for fixing the outer titanium plate (1), and the composite male die is provided with a second fixing device for fixing the inner titanium plate (2).

5. The method of making a double-curved TRT sandwich composite panel according to claim 2, wherein, 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 frame and the edge of the outer titanium plate (1) is L, 30mm<=L<=50mm.

6. The method of making a double-curved TRT sandwich composite panel according to claim 2, wherein, In step S4, the side wall of the frame is provided with a glue injection hole for injecting rubber into the frame and an air exhaust hole for exhausting air in the frame.

7. The method of making a double-curved TRT sandwich composite panel according to claim 6, wherein, The frame is made of TA23 titanium alloy material.

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