Co-curing wallboard forming mold
By setting limit grooves and twist strips in the co-cured wall molding mold, the problem of skin collapse in the long truss part is solved, the stable support of the wall and the improvement of the mold quality is achieved, and the difficulty of using the mold is reduced. and cost.
Patent Information
- Application Number
- CN202421069925.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-16
AI Technical Summary
In the prior art, the co-cured wall panel lacks effective support during the curing process, causing the skin to collapse in the long truss part, and increases the difficulty and cost of the mold to use.
A co-cured wall molding mold is designed, including the mold body, the core mold body and the twist stripping conditions. By setting limit grooves and accommodating grooves at intervals on the mold body, the core mold body is embedded, and each two are Set twist strips between the limit grooves and at both ends of the mold to support the wall panels and avoid gaps collapse.
It realizes stable support for co-cured wall panels, ensures molding quality, simplifies mold structure, reduces the difficulty and cost of use, and is easy to operate.
Smart Images
Figure CN222223528U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of co-curing wallboard forming, in particular to a co-curing wallboard forming mould. Background Art
[0002] Co-cured wall panels are mainly made of carbon fiber resin-based composite materials and are widely used in the main load-bearing structures of large commercial aircraft. Among the co-cured wall panels, hat-shaped long-beam reinforced wall panels are often widely used as reinforced structures in the aerospace field. Specifically, hat-shaped long-beam reinforced wall panels made of composite materials are generally made by autoclave process, and the co-curing molding process is particularly important in the process. In the prior art, long beams, skins and twist strips are often put into the tank together for curing. Since the cut-off ends of the long beams in the wall panels and the middle parts of the wall panels need to be disconnected for assembly of structures such as frames and corner pieces, there is no structure at the bottom of the skin where the long beams are disconnected. When performing specific curing molding, it is often necessary to rely on outer bags and core molds to achieve the effect of pressurizing them. Specifically, there are grooves in the inner cavity of the long beams, and the grooves of all the long beams are connected, so that the core mold can be placed in the inner cavity of the long beams, thereby a triangular area is generated between the core mold, the long beams and the skin, and the twist strips are used to fill this triangular area to avoid gaps. However, since there is no long stringer between each two long stringers, it is impossible to place the twist strips, which will create a new triangular gap, causing the skin to collapse here. Figure 1 As shown, for both ends of the wall panel, a metal cover plate 30' is usually arranged above the mold 10' and the core mold 20' to support the skin, but the metal cover plate 30' is thick, which not only cannot adapt to the long stringer of the complex structure, but also affects the demoulding of the core mold after subsequent curing. Therefore, how to ensure that the skin without the long stringer is effectively supported during curing, avoid the existence of gaps and collapse, and reduce the difficulty and cost of using the mold are problems that people in this field need to solve. Utility Model Content
[0003] The utility model aims to provide a co-curing wall panel forming mold to ensure that the skin without long stringers is effectively supported during curing, avoid collapse caused by gaps, and reduce the difficulty and cost of using the mold.
[0004] To achieve this purpose, the utility model adopts the following technical solutions:
[0005] A co-cured wall panel forming mold, comprising:
[0006] A mold body, on which limiting grooves are arranged at intervals for limiting and fixing the co-cured wallboard;
[0007] A core mold body, which is embedded in the mold body and penetrates the co-cured wallboard;
[0008] A twister strip dummy is provided between every two of the limiting grooves and at both ends of the mold body, and is used to support the co-cured wallboard.
[0009] Optionally, the co-cured wall panel includes a skin, a long stringer and a twist bar, a plurality of the long stringers are arranged on the skin at intervals, and the twist bar is clamped between the long stringer and the skin, and the long stringer can be fixed in the limiting groove.
[0010] As an option, the limiting grooves are arranged in one-to-one correspondence with the long beams.
[0011] Optionally, the mold body is further provided with a receiving groove, which runs through the mold body and is used for placing the core mold body.
[0012] As an option, the limiting groove is connected to the accommodating groove.
[0013] Optionally, when the long stringer is fixed in the limiting groove, the inner wall of the long stringer and the bottom of the accommodating groove are located on the same plane.
[0014] Optionally, the core mold body is embedded in the accommodating groove and is located between the skin and the long stringer, and the twist strip is located in a first empty triangle area formed by the skin, the long stringer and the outer side of the core mold body.
[0015] As an option, the twist strip dummy is located in a second empty triangular area formed by the skin, the inner wall of the accommodating groove and the outer side of the core mold body.
[0016] As an option, the twist strip dummy can operate in an environment with a temperature range of 170-190° C. and / or a pressure range of 0.6-0.8 MPa.
[0017] As an option, the twist strip dummy is made by using 3D printing equipment or CNC machine tools.
[0018] Beneficial effects of the utility model:
[0019] In the utility model, the mold body can ensure stable support of the co-cured wallboard during the curing process, and the position of the co-cured wallboard can be limited and fixed by the limit grooves arranged at intervals thereon. At the same time, the core mold body can be embedded in the mold body, and the co-cured wallboard is arranged through the co-cured wallboard, which can ensure the quality requirements of the co-cured wallboard during the curing process and facilitate removal from the mold body after use. Furthermore, the twist strip dummy is arranged between every two limit grooves and at both ends of the mold body, which can effectively support the co-cured wallboard and avoid the problem of gaps and collapse on the mold body. The curing operation of the co-cured wallboard can be achieved through the simple structure of the mold body, the core mold body and the twist strip dummy, which effectively reduces the difficulty and cost of using the mold and is convenient for operators to operate. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a cross-sectional schematic diagram of a molding die provided with a metal cover plate in the prior art in a use state;
[0021] Figure 2 It is a structural schematic diagram of a mold body in a co-curing wallboard forming mold according to an embodiment of the utility model;
[0022] Figure 3 It is a structural schematic diagram of the co-cured wallboard described in an embodiment of the utility model;
[0023] Figure 4 It is a cross-sectional schematic diagram of the co-curing wall panel forming mold in the embodiment of the utility model in the use state;
[0024] Figure 5 It is another cross-sectional schematic diagram of the co-curing wall panel forming mold described in an embodiment of the utility model in a use state.
[0025] In the figure:
[0026] 100-skin; 200-long stringer; 300-twist strip;
[0027] 10-mold body; 101-accommodating groove; 102-limiting groove; 20-core mold body; 30-twist strip dummy; 10'-mold; 20'-core mold; 30'-metal cover plate. DETAILED DESCRIPTION
[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0030] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0031] Co-cured wall panels are mainly made of carbon fiber resin-based composite materials and are widely used in the main load-bearing structures of large commercial aircraft. Among the co-cured wall panels, hat-shaped long-beam reinforced wall panels are often widely used as reinforced structures in the aerospace field. Specifically, hat-shaped long-beam reinforced wall panels made of composite materials are generally made by autoclave process, and the co-curing molding process is particularly important in the process. In the prior art, long beams, skins and twist strips are often put into the tank together for curing. Since the cut-off ends of the long beams in the wall panels and the middle parts of the wall panels need to be disconnected for assembly of structures such as frames and corner pieces, there is no structure at the bottom of the skin where the long beams are disconnected. When performing specific curing molding, it is often necessary to rely on outer bags and core molds to achieve the effect of pressurizing them. Specifically, there are grooves in the inner cavity of the long beams, and the grooves of all the long beams are connected, so that the core mold can be placed in the inner cavity of the long beams, thereby a triangular area is generated between the core mold, the long beams and the skin, and the twist strips are used to fill this triangular area to avoid gaps. However, since there is no long stringer between each two long stringers, it is impossible to place the twist strips, which will create a new triangular gap, causing the skin to collapse here. Figure 1As shown, for both ends of the wall panel, a metal cover plate 30' is usually arranged above the mold 10' and the core mold 20' to support the skin, but the metal cover plate is thick and not only cannot adapt to the long stringer of the complex structure, but also affects the demoulding of the core mold after subsequent curing. Therefore, how to ensure that the skin without the long stringer is effectively supported during curing, avoid the existence of gaps and collapse, and reduce the difficulty and cost of using the mold are problems that people in this field need to solve.
[0032] The technical solution of this embodiment is further explained below with reference to the accompanying drawings and through specific implementation methods.
[0033] like Figure 2-Figure 5 As shown, this embodiment provides a co-cured wall panel forming mold, including a mold body 10, a core mold body 20 and a twist strip dummy 30. The mold body 10 is provided with limiting grooves 102 at intervals for limiting and fixing the co-cured wall panels. The core mold body 20 is embedded in the mold body 10, and the co-cured wall panels are arranged therethrough. Twist strip dummy 30 is arranged between every two limiting grooves 102 and at both ends of the mold body 10 for supporting the co-cured wall panels.
[0034] Specifically, in this embodiment, the mold body 10 can ensure stable support of the co-cured wallboard during the curing process, and the position of the co-cured wallboard can be limited and fixed by the limit grooves 102 arranged at intervals thereon. At the same time, the core mold body 20 can be embedded in the mold body 10, and the co-cured wallboard is arranged to ensure the quality requirements of the co-cured wallboard during the curing process, and it is convenient to remove it from the mold body 10 after use. Furthermore, the twist strip dummy 30 is arranged between every two limit grooves 102 and at both ends of the mold body 10, which can effectively support the co-cured wallboard and avoid the problem of gaps and collapse on the mold body 10. The curing operation of the co-cured wallboard can be achieved through the simple structure of the mold body 10, the core mold body 20 and the twist strip dummy 30, which effectively reduces the difficulty and cost of using the mold and is convenient for operators to operate.
[0035] The specific structure of the co-curing wall panel forming mold in this embodiment is described below.
[0036] Combination Figure 2-Figure 5As shown, the co-cured wall panel in this embodiment includes a skin 100, a long stringer 200 and a twist bar 300. Optionally, in this embodiment, a plurality of long stringers 200 are provided, and a plurality of long stringers 200 are arranged at intervals on the skin 100. Exemplarily, the long stringers 200 are arranged as an Ω-shaped structure, and a receiving space can be formed between each long stringer 200 and the skin 100. Further, the twist bar 300 is sandwiched between the long stringer 200 and the skin 100 to ensure a stable connection between the long stringer 200 and the skin 100. At the same time, due to the arrangement of the twist bar 300, after the skin 100 is placed in the co-cured wall panel forming mold, the skin 100 can be effectively supported and can be better tightly fixed with the long stringer 200. Optionally, the twist bar 300 is arranged as a triangular column structure, and one plane and two arc surfaces are arranged on the three sides of the twist bar 300. Specifically, the flat surface of the twist strip 300 is disposed against the skin 100, and one of the two curved surfaces is disposed against the inner wall of the long stringer 200, and the other is disposed against the co-cured wall panel forming mold.
[0037] Optionally, the co-cured wallboard forming mold in this embodiment includes a mold body 10, a core mold body 20 and a twist strip dummy 30. Optionally, the mold body 10 is used to limit and support the co-cured wallboard to ensure the position and stable support of the co-cured wallboard during the curing process in the tank. Further, the core mold body 20 is embedded in the mold body 10, and the co-cured wallboard is arranged to ensure that the structure of the co-cured wallboard meets the requirements after curing. Optionally, the twist strip dummy 30 is placed on the mold body 10 to support the co-cured wallboard to ensure stable support of the co-cured wallboard.
[0038] like Figure 2 As shown, specifically, in this embodiment, a receiving groove 101 and a limiting groove 102 are provided on the mold body 10. Optionally, a plurality of limiting grooves 102 are provided on the mold body 10, and the plurality of limiting grooves 102 are arranged at intervals on the mold body 10, for limiting and fixing the co-cured wallboard. Specifically, in this embodiment, the long stringer 200 can be limited and fixed in the limiting groove 102, so as to ensure the stable placement of the subsequent skin 100. Exemplarily, the limiting groove 102 is arranged in a one-to-one correspondence with the long stringer 200, that is, the size, number and position of the limiting groove 102 are all arranged in a one-to-one correspondence with the long stringer 200, so as to ensure that each long stringer 200 can be placed in the corresponding limiting groove 102.
[0039] Further, the receiving groove 101 is provided through the mold body 10, and is used to place the core mold body 20, so as to ensure the stable placement of the core mold body 20. Specifically, the limiting groove 102 is connected to the receiving groove 101. Further, in this embodiment, the depth of the limiting groove 102 is greater than the depth of the receiving groove 101, and the depth difference between the two is equal to the thickness of the long stringer 200, so that when the long stringer 200 is limited and fixed in the limiting groove 102, the inner wall of the long stringer 200 and the groove bottom of the receiving groove 101 are located on the same plane, thereby ensuring the stable placement of the core mold body 20, so that the long stringer 200 will not interfere with the placement of the core mold body 20. Specifically, when the core mold body 20 is embedded in the receiving groove 101, it is located between the skin 100 and the long stringer 200, that is, the core mold body 20 is embedded in the receiving groove 101 after passing through the receiving space formed by the skin 100 and the long stringer 200, and due to the coordinated arrangement of the above-mentioned limiting groove 102 and the receiving groove 101, the core mold body 20 can be simultaneously abutted against the groove wall of the receiving groove 101, the inner wall of the long stringer 200 and the lower surface of the skin 100 facing the long stringer 200, so as to provide stable support for the skin 100 through the core mold body 20, and ensure that the structural connection between the skin 100 and the long stringer 200 meets the requirements during the curing process.
[0040] like Figure 4 As shown, the twist strip 300 in the co-cured wall panel in this embodiment is located in the first empty triangular area formed by the skin 100, the long stringer 200 and the outer side of the core mold body 20, so as to ensure the stable support of the skin 100 above the long stringer 200 and avoid the problem of the skin 100 sinking due to the gap between the co-cured wall panel and the core mold body 20 at the long stringer 200. Specifically, the two arc surfaces of the twist strip 300 are respectively attached to the outer side of the core mold body 20 and the inner side of the long stringer 200, so as to ensure that the first empty triangular area is completely filled under the action of the twist strip 300, ensure that the skin 100 does not sink during the curing process, and the skin 100 and the long stringer 200 can be stably connected.
[0041] Combination Figure 2 and Figure 5As shown, in this embodiment, the twist bar dummy 30 is arranged between every two limiting grooves 102 and at both ends of the mold body 10, and is used to support the skin 100 in the co-cured wallboard to prevent the skin 100 from sinking. Specifically, after the long stringer 200 is fixed in the limiting groove 102 to place the skin 100, there is a gap between the lower part of the skin 100 located at the position without the long stringer 200 and the upper surface of the mold body 10, which is easy to cause the skin 100 to sink during the curing process. By installing the twist bar dummy 30, effective support can be provided to the skin 100 to prevent it from collapsing. Exemplarily, the twist bar dummy 30 has a similar structure to the twist bar 300, and is also set as a triangular column structure, and one plane and two arc surfaces are also set on the three sides of the twist bar dummy 30, but the length and size of the twist bar dummy 30 are different from those of the twist bar 300, and can be relatively set as needed, which will not be repeated here.
[0042] Specifically, the twist strip dummy 30 is located in the second empty triangular area formed by the skin 100, the inner wall of the receiving groove 101 and the outer side of the core mold body 20, so as to ensure the stable support of the skin 100 in the area without the long stringer 200 and avoid the problem of the skin 100 sinking. Specifically, the two curved surfaces of the twist strip dummy 30 are respectively abutted against the outer side of the core mold body 20 and the inner wall of the receiving groove 101, so as to ensure that the second empty triangular area is completely filled under the action of the twist strip dummy 30, and ensure that the skin 100 does not sink during the curing process. Similarly, the twist strip dummy 30 placed at both ends of the mold body 10 can not only avoid the following problems: Figure 1 The use of the metal cover plate 30' in the prior art simplifies the types of mold parts, and can also ensure the overall stable support of the skin 100, and ensure that the shape of the co-cured wall panel meets the requirements. For example, the twist strip dummy 30 has a simple structure and can be removed after use, which not only reduces the mold cost and facilitates maintenance and replacement, but also reduces the operating requirements and is convenient for operators to use.
[0043] For example, in this embodiment, the twist strip dummy 30 can operate in an environment with a temperature range of 170-190° C. and / or a pressure range of 0.6-0.8 MPa, so as to ensure its stable support for the skin 100. Optionally, the twist strip dummy 30 can be made by a 3D printing device or a CNC machine tool, and in other embodiments, a mold can also be used to prepare the twist strip dummy 30.
[0044] Working principle: To prepare the twist strip dummy 30, first embed the long stringer 200 in the limiting groove 102, and then place the core mold body 20 on the top of the long stringer 200 so that it is embedded in the accommodating groove 101; then place the twist strip 300 on the long stringer 200 so that its two curved surfaces are against the outside of the core mold body 20 and the inside of the long stringer 200, and finally place the twist strip dummy 30 between every two limiting grooves 102 on the mold body 10 and at both ends of the mold body 10; then place the skin 100 on the core mold body 20 so that the skin 100 is against the plane above the core mold body 20, above the twist strip 300, and above the plane above the twist strip dummy 30, and then put the co-cured wall panel forming mold into a tank as a whole, prepare a vacuum bag, and perform hot pressing curing so that the skin 100, the long stringer 200 and the twist strip 300 are cured into a co-cured wall panel, and the preparation is completed.
[0045] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.
Claims
1. A co-curing wall panel forming mold, characterized in that: include: A mold body (10), wherein limiting grooves (102) are arranged at intervals on the mold body (10) for limiting and fixing the co-cured wallboard; A core mold body (20), wherein the core mold body (20) is embedded in the mold body (10) and penetrates the co-cured wall panel arrangement; A twist strip dummy (30) is provided between every two of the limiting grooves (102) and at both ends of the mold body (10) to support the co-cured wallboard.
2. The co-curing wall panel forming mold according to claim 1, characterized in that: The co-cured wall panel comprises a skin (100), a long stringer (200) and a twist bar (300), wherein a plurality of the long stringers (200) are arranged at intervals on the skin (100), and the twist bar (300) is sandwiched between the long stringers (200) and the skin (100), and the long stringers (200) can be fixed in the limiting groove (102).
3. The co-curing wall panel forming mold according to claim 2, characterized in that: The limiting grooves (102) are arranged in one-to-one correspondence with the long beams (200).
4. The co-curing wallboard forming mold according to claim 2, characterized in that: The mold body (10) is also provided with a receiving groove (101), which runs through the mold body (10) and is used to place the core mold body (20).
5. The co-curing wallboard forming mold according to claim 4, characterized in that: The limiting groove (102) is communicated with the containing groove (101).
6. The co-curing wall panel forming mold according to claim 5, characterized in that: When the long stringer (200) is fixed in the limiting groove (102), the inner wall of the long stringer (200) and the bottom of the containing groove (101) are located on the same plane.
7. The co-curing wallboard forming mold according to claim 6, characterized in that: The core mold body (20) is embedded in the accommodating groove (101) and is located between the skin (100) and the long stringer (200), and the twist strip (300) is located in a first empty triangle area formed by the skin (100), the long stringer (200) and the outer side of the core mold body (20).
8. The co-curing wall panel forming mold according to claim 4, characterized in that: The twist strip dummy (30) is located in a second empty triangular area formed by the skin (100), the inner wall of the accommodating groove (101) and the outer side of the core mold body (20).
9. The co-curing wall panel forming mold according to claim 1, characterized in that: The twist strip dummy (30) can operate in an environment with a temperature range of 170-190° C. and / or a pressure range of 0.6-0.8 MPa.
10. The co-curing wall panel forming mold according to claim 1, characterized in that: The twist strip dummy (30) is manufactured using 3D printing equipment or a numerically controlled machine tool.
Citation Information
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