Bolt assembly preparation mold based on ceramic matrix composite material

Abstract

The utility model discloses a ceramic matrix composite material-based bolt assembly preparation mold, which comprises an openable mold body, a plurality of mounting cavities are arranged in the mold body, the number of the plurality of mounting cavities is the same as that of parts forming a bolt assembly, and the mounting cavities are matched with the corresponding parts in size and shape. And the side face of the mold body is provided with a drainage runner for introducing materials into the multiple mounting cavities at the same time. According to the utility model, all parts of all bolt assemblies can be synchronously produced under the same process, and all the parts have consistent mechanical properties and structure uniformity, so that the parts have higher combinability after subsequent assembly and combination.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a mold for preparing bolt assemblies based on ceramic matrix composite materials. Background Technology

[0002] In modern aircraft structures, ceramic matrix composites (CMCs) are considered ideal materials for hot-end components of next-generation aerospace engines due to their excellent low density, resistance to environmental corrosion, high temperature resistance, and high strength. While metal fasteners are currently used for connection, they are no longer adequate for the working environment of these hot-end components and are gradually being replaced by CMC fasteners. Traditional CMC fasteners have low tensile and shear strength and lack self-locking capabilities, making disassembly difficult and unsuitable for future applications. Therefore, it is essential to develop high-strength self-locking bolt assemblies with high tensile and shear strength, self-locking functionality, and quick disassembly. The main components of a self-locking bolt assembly include the bolt body, shear sleeve, and self-locking component. To ensure the performance of the bolt assembly in the future, all components should be manufactured simultaneously using the same process to ensure consistent mechanical properties. However, currently, there is no suitable manufacturing mold that can meet the requirement of simultaneous production of all components under the same process. Utility Model Content

[0003] The purpose of this invention is to provide a bolt assembly manufacturing mold based on ceramic matrix composite material, which allows all components of each bolt assembly to be produced synchronously under the same process, with each component having consistent mechanical properties and uniform structure, and having higher bonding strength after subsequent assembly.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0005] A mold for manufacturing bolt assemblies based on ceramic matrix composites includes an openable mold body. The mold body has multiple mounting cavities, the number of which is the same as the number of components that make up the bolt assembly. The size and shape of the mounting cavities are adapted to the corresponding components. The side of the mold body has a flow channel for simultaneously introducing materials into the multiple mounting cavities.

[0006] In this design, the mold body has multiple mounting cavities, the number of which is exactly the same as the number of components that make up the bolt assembly. This ensures that each component has a corresponding mounting position, thereby guaranteeing the integrity and accuracy of the bolt assembly. All components of the bolt assembly can be placed in the mold simultaneously for subsequent production. The size and shape of the mounting cavities are perfectly matched to the corresponding components, which helps to accurately position the components in the mold. The sides of the mold body have flow channels that allow materials to be introduced into multiple mounting cavities simultaneously. This method of simultaneous material introduction not only improves production efficiency but also ensures that the amount of material in each mounting cavity is uniform, thus avoiding quality differences in the bolt assembly caused by uneven material distribution. All components of the bolt assembly are produced synchronously under the same process, resulting in consistent mechanical properties and uniform structure of each component in the later stages. The bolt assembly has higher bonding strength after subsequent assembly.

[0007] Optionally, the mold body includes two symmetrically arranged templates that can be detachably connected. Each of the two templates has a transition cavity on its opposite surface that communicates with the flow channel. Half of the installation cavity is located on the top surface of the transition cavity of the upper template, and the other half is located on the bottom surface of the transition cavity of the lower template.

[0008] Optionally, both the template and the transition cavity are rectangular cavities.

[0009] Optionally, the template is provided with multiple through holes located around the transition cavity. The multiple through holes on the two templates correspond to each other. After the two templates are closed, locking bolts are provided in the multiple through holes to lock the two templates.

[0010] Optionally, the drainage channel includes multiple first channels, which penetrate the top and bottom surfaces of the template and are distributed in a matrix inside the transition cavity. The first channels are connected to the mounting cavity and the transition cavity.

[0011] Optionally, all of the plurality of first channels are cylindrical.

[0012] Optionally, it also includes multiple second flow channels, which are distributed in a rectangular annular shape on the sidewall of the transition cavity and penetrate the sidewall of the transition cavity.

[0013] Optionally, the cross-section of the second flow channel is rectangular or square.

[0014] Optionally, it also includes multiple third flow channels, which are distributed on the opposite surfaces of the two templates. The third flow channels are located above the second flow channels and penetrate the template laterally.

[0015] Optionally, the cross-section of the third flow channel is U-shaped, and the upper end and both the left and right ends of the third flow channel are open.

[0016] The beneficial effects of this utility model are:

[0017] 1. In this utility model, the mold body is provided with multiple mounting cavities. The number of mounting cavities is exactly the same as the number of components that make up the bolt assembly. All components of the bolt assembly can be placed in the mold at the same time for subsequent production. The mold body has a flow channel on its side, which allows the material to be introduced into multiple mounting cavities at the same time. This method of introducing material at the same time not only improves production efficiency, but also ensures that the amount of material in each mounting cavity is uniform. All components of the bolt assembly are produced synchronously under the same process, so that the components have consistent mechanical properties and uniform structure in the later stage. The bolt assembly has higher bonding strength after subsequent assembly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 2 This is a schematic diagram showing the distribution of the first flow channel, the second flow channel, and the third flow channel on the top surface of the lower template.

[0020] Figure 3 This is a schematic diagram of the front view of the structure after the two templates are joined together.

[0021] Reference numerals: 1-template, 2-transition cavity, 3-installation cavity, 4-first flow channel, 5-second flow channel, 6-third flow channel, 7-through hole, 8-locking bolt, 9-side wall of transition cavity. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0023] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" 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 can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example

[0026] A mold for manufacturing bolt assemblies based on ceramic matrix composites includes an openable mold body. The mold body has multiple mounting cavities 3, the number of which is the same as the number of components that make up the bolt assembly. The mounting cavities 3 are adapted to the size and shape of the corresponding components. The side of the mold body has a flow channel for simultaneously introducing materials into the multiple mounting cavities 3.

[0027] In this embodiment, as Figure 1 As shown, the mold body has multiple mounting cavities 3, the number of which is exactly the same as the number of components that make up the bolt assembly. This ensures that each component has a corresponding mounting position, thereby guaranteeing the integrity and accuracy of the bolt assembly. All components of the bolt assembly can be placed together in the mold for subsequent production. The size and shape of the mounting cavities 3 are perfectly matched to the corresponding components, facilitating accurate positioning of the components within the mold. A flow channel is provided on the side of the mold body, allowing material to be simultaneously introduced into multiple mounting cavities 3. This simultaneous material introduction method not only improves production efficiency but also ensures a uniform material quantity in each mounting cavity 3, thus avoiding quality differences in the bolt assembly caused by uneven material distribution. By setting three shapes of mounting cavities 3 within the mold body, the first type of mounting cavity 3 corresponds to the bolt body... The bolt body features a double-threaded head, and the second type of mounting cavity 3 is adapted to the shape and size of the shear sleeve. The third type of mounting cavity 3 is adapted to the shape and size of the self-locking component. Multiple mounting cavities 3 can be set, allowing for the simultaneous production of multiple different components. The three types of mounting cavities can be used to produce three types of components at the same time. In the subsequent CVI deposition process, all three can be completed simultaneously. After deposition, the internal structure of the three components is highly consistent. Since the three components are located in the same mold, the PIP deposition process can be carried out simultaneously, including impregnation, curing, pyrolysis, and pyrolysis treatments. Therefore, the components of the bolt assembly are produced synchronously under the same process, resulting in consistent mechanical properties and uniform microstructure of the components. The bolt assembly has higher bonding strength after subsequent assembly.

[0028] Furthermore, the mold body includes two symmetrically arranged templates 1 that can be detachably connected. Each of the two templates 1 has a transition cavity 2 that communicates with the flow channel on its opposite surface. Half of the mounting cavity 3 is located on the top surface of the transition cavity 2 of the upper template 1, and the other half is located on the bottom surface of the transition cavity 2 of the lower template 1.

[0029] Specifically, such as Figure 3 As shown, the two templates 1 are fixed together by detachable connections (such as bolts, clips, etc.), making the assembly and disassembly of the mold simple and quick, which helps to improve production efficiency. After disassembly, the templates 1 can be easily cleaned and maintained, ensuring the hygiene and long-term stable operation of the mold. Each of the two templates 1 has a transition cavity 2 connected to the flow channel on its opposite surface, ensuring that the material can flow smoothly into the mounting cavity 3. The transition cavity 2 on the bottom surface of the upper template 1 is convex upwards, while the transition cavity 2 on the lower template 1 is concave downwards. The transition cavities 2 on the two templates 1 are identical and corresponding, forming a stepped shape with the templates 1. The connection design between the flow channel and the transition cavity 2 facilitates the smooth entry of material from the outside of the mold body into the transition cavity 2 and the mounting cavity 3, allowing the material to quickly cover all components. The mounting cavity 3 is symmetrically divided into two halves; when the two templates 1 are closed, they form a complete mounting cavity 3.

[0030] Furthermore, both the template 1 and the transition cavity 2 are rectangular cavities.

[0031] Furthermore, the template 1 is provided with multiple through holes 7 located around the transition cavity 2. The multiple through holes 7 on the two templates 1 correspond to each other. After the two templates 1 are closed, locking bolts 8 are provided in the multiple through holes 7 to lock the two templates 1.

[0032] Specifically, such as Figure 2As shown, since the transition cavity 2 is rectangular, multiple through holes 7 are also distributed in a rectangular ring on the template 1 around the transition cavity 2. The through holes 7 are located around the circumference of the transition cavity 2, ensuring that the locking bolts 8 are evenly distributed around the mold, thus providing a stable locking force. Simultaneously, the multiple through holes 7 increase the number of locking points, further improving the stability and safety of the mold. The size and shape of the through holes 7 should match the locking bolts 8 to ensure that the locking bolts 8 can smoothly penetrate and lock the two templates 1. The locking bolts 8 are the main connecting parts between the two templates 1. They pass through the through holes 7 and tightly connect the two templates 1 together, ensuring that the mold will not loosen or deform during the preparation of the bolt assembly. The locking bolts 8 also have a certain positioning function, ensuring that the two templates 1 maintain the correct relative position when closed, thus ensuring the accuracy and consistency of the mounting cavity 3. The removability of the locking bolts 8 makes the disassembly and replacement of the mold simple and quick, helping to reduce production costs and maintenance difficulty. After the two templates 1 are closed, insert the locking bolts 8 into the corresponding through holes 7, and use appropriate tools (such as wrenches, screwdrivers, etc.) to tighten the locking bolts 8. During the tightening process, attention should be paid to controlling the magnitude of the tightening force to avoid damage to the mold or breakage of the locking bolts 8 due to over-tightening.

[0033] Furthermore, the drainage channel includes multiple first channels 4, which penetrate the top and bottom surfaces of the template 1. The multiple first channels 4 are distributed in a matrix inside the transition cavity 2, and the first channels 4 are connected to the mounting cavity 3 and the transition cavity 2.

[0034] Furthermore, all of the plurality of first flow channels 4 are cylindrical.

[0035] Specifically, such as Figure 2 As shown, multiple first flow channels 4 penetrate the top and bottom surfaces of the template 1 and are distributed in a matrix pattern inside the transition cavity 2. This distribution ensures that the material can flow into the mounting cavity 3 evenly and quickly. The first flow channels 4 are connected to the mounting cavity 3 and the transition cavity 2, ensuring that the material can smoothly enter the mounting cavity 3 from the guide channel and be evenly distributed within the mounting cavity 3. First flow channels 4 are distributed on both templates 1, allowing the material to simultaneously enter the transition cavity 2 and the mounting cavity 3 from the top and bottom surfaces of the mold body. The cylindrical first flow channels 4 have smooth inner walls and uniform cross-sections, which helps reduce resistance and friction during material flow, improving material flow efficiency. The matrix-distributed first flow channels 4 ensure that the material is evenly distributed in the mounting cavity 3, thus avoiding bolt assembly quality problems caused by uneven material distribution. The cylindrical first flow channels 4 have a large flow area and low flow resistance, allowing the material to flow into the mounting cavity 3 quickly and efficiently, improving production efficiency.

[0036] Furthermore, it also includes multiple second flow channels 5, which are arranged in a rectangular ring on the side wall 9 of the transition cavity, and the second flow channels 5 penetrate the side wall 9 of the transition cavity.

[0037] Furthermore, the cross-section of the second flow channel 5 is rectangular or square.

[0038] Specifically, such as Figure 2 As shown, multiple second flow channels 5 are arranged in a rectangular ring on the sidewall of the transition cavity 2. The rectangular ring shape is because the transition cavity 2 is a rectangular cavity. This layout not only helps to evenly distribute the material on the sidewall 9 of the transition cavity, but also ensures that the material can smoothly flow into the first flow channel 4 and finally enter the mounting cavity 3. The second flow channels 5 are connected to the first flow channel 4 and penetrate the sidewall 9 of the transition cavity. This design allows the material to enter the transition cavity 2 from multiple second flow channels 5 and then enter the mounting cavity 3, thereby realizing multi-path material flow into the mold body and improving the material conveying efficiency. The cross-section of the second flow channel 5 is designed to be rectangular or square, which has a large flow area and good structural stability. The introduction and layout optimization of the second flow channels 5 give the mold a stronger flow-guiding capacity when manufacturing bolt assemblies, and the material can flow into the mold more smoothly.

[0039] Furthermore, it also includes multiple third flow channels 6, which are distributed on the opposite surfaces of the two templates 1. The third flow channels 6 are located above the second flow channel 5 and penetrate the template 1 laterally.

[0040] Furthermore, the cross-section of the third flow channel 6 is U-shaped, and the upper end and both the left and right ends of the third flow channel 6 are open.

[0041] Specifically, such as Figure 2 As shown, multiple third flow channels 6 are distributed on the opposite surfaces of the two templates 1 and located above the second flow channel 5. This layout allows the third flow channels 6 to receive material from the sides and guide it into the mounting cavity 3. The cross-section of the third flow channel 6 is U-shaped, which provides a large flow area and good material guidance. The upper and left / right ends of the U-shaped opening make it easier for material to enter the third flow channel 6, while also helping to reduce resistance and friction during material flow. The introduction and optimized layout of the third flow channels 6 further enhance the mold's flow-guiding capacity, enabling them to receive material from multiple directions and guide it into the mounting cavity 3.

[0042] The working principle of this utility model is as follows: Different numbers of parts are placed in different mounting cavities 3 on the lower template 1 according to their corresponding relationships. Then, the two templates 1 are closed, and the through holes 7 are aligned. Locking bolts 8 are inserted into the through holes 7, and the two templates 1 are locked by locking bolts 8. Then, the mold body with parts is subjected to subsequent CVI deposition process and PIP deposition process, including impregnation treatment, curing treatment, pyrolysis treatment, etc. During impregnation, liquid material can enter the transition cavity 2 from the first flow channel 4, the second flow channel 5, and the third flow channel 6 at the same time, and finally enter the mounting cavity 3. The material can enter the mold body from different directions at the same time, which improves the material entry efficiency so that it can quickly enter the next process. The three parts are located in the same mold and can be produced synchronously under the same process, so that the parts have consistent mechanical properties and uniform structure in the later stage. The bolt assembly has higher bonding strength after subsequent assembly.

[0043] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A mold for manufacturing bolt assemblies based on ceramic matrix composites, comprising an openable and closable mold body, characterized in that, The mold body is provided with multiple mounting cavities (3), the number of mounting cavities (3) is the same as the number of components that make up the bolt assembly, the mounting cavities (3) are adapted to the size and shape of the corresponding components, and the side of the mold body is provided with a flow channel to simultaneously introduce materials into multiple mounting cavities (3).

2. The bolt assembly manufacturing mold based on ceramic matrix composite material according to claim 1, characterized in that, The mold body includes two symmetrically arranged templates (1) that can be detachably connected. Each of the two templates (1) has a transition cavity (2) that communicates with the flow channel on its opposite surface. Half of the mounting cavity (3) is located on the top surface of the transition cavity (2) of the upper template (1), and the other half is located on the bottom surface of the transition cavity (2) of the lower template (1).

3. The bolt assembly manufacturing mold based on ceramic matrix composite material according to claim 2, characterized in that, Both the template (1) and the transition cavity (2) are rectangular cavities.

4. The bolt assembly manufacturing mold based on ceramic matrix composite material according to claim 3, characterized in that, The template (1) is provided with multiple through holes (7) located around the transition cavity (2). The multiple through holes (7) on the two templates (1) correspond to each other. After the two templates (1) are closed, locking bolts (8) are provided in the multiple through holes (7) to lock the two templates (1).

5. A mold for manufacturing bolt assemblies based on ceramic matrix composites according to claim 2, characterized in that, The drainage channel includes multiple first channels (4), which penetrate the top and bottom surfaces of the template (1). The multiple first channels (4) are distributed in a matrix on the inner side of the transition cavity (2). The first channels (4) are connected to the mounting cavity (3) and the transition cavity (2).

6. The bolt assembly manufacturing mold based on ceramic matrix composite material according to claim 5, characterized in that, The plurality of first flow channels (4) are all cylindrical.

7. A mold for manufacturing bolt assemblies based on ceramic matrix composites according to claim 5, characterized in that, It also includes multiple second flow channels (5), which are distributed in a rectangular ring on the side wall (9) of the transition cavity, and the second flow channels (5) penetrate the side wall (9) of the transition cavity.

8. A mold for manufacturing bolt assemblies based on ceramic matrix composites according to claim 7, characterized in that, The cross-section of the second flow channel (5) is rectangular or square.

9. A mold for manufacturing bolt assemblies based on ceramic matrix composites according to claim 5, characterized in that, It also includes multiple third flow channels (6), which are distributed on the opposite surfaces of the two templates (1). The third flow channels (6) are located above the second flow channel (5) and extend laterally through the template (1).

10. A mold for manufacturing bolt assemblies based on ceramic matrix composites according to claim 9, characterized in that, The cross-section of the third flow channel (6) is U-shaped, and the upper end and the left and right ends of the third flow channel (6) are open.

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