A device and method for co-curing a profiled wall panel

Abstract

The application relates to the technical field of composite material forming processes, and particularly discloses a device and a method for co-curing forming of a work-shaped stiffened wall plate, wherein the device for co-curing forming of the work-shaped stiffened wall plate forms a combination of a positioning core mold, a pressurizing core mold and a work-shaped stiffened wall plate preform, and further introduces a positioning mold, realizes axial fixation on one side through an axial positioning claw and an axial positioning block, realizes lateral positioning through a lateral positioning claw and a lateral positioning block, realizes press bonding positioning on the other side through a press assembly, and then realizes integrated grabbing and transfer operation of a forming mold and the work-shaped stiffened wall plate preform, so as to finally form an integral structure of a plurality of forming assemblies and a skin preform, thereby realizing forming manufacturing of the integral work-shaped stiffened wall plate, which maximally reduces interference of external operation on the preform structure, effectively avoids shape distortion caused by external force, guarantees the stability and precision of subsequent curing forming, and improves forming quality and efficiency.

Description

Technical Field

[0001] This invention relates to the field of composite material molding technology, and in particular to a co-curing molding apparatus and method for I-shaped stiffened wall panels. Background Technology

[0002] I-beam stiffened panels are high-strength, lightweight structural components composed of skin and I-beam-shaped reinforcing ribs. They are widely used in large load-bearing structures such as fuselage floor beams, wing panel beams, and door crossbeams. Manufacturing I-beam stiffened panels requires a dedicated tooling system. In actual manufacturing, the skin and stiffeners are typically cured separately before being mechanically connected using fasteners or assembled using secondary adhesive bonding. However, this segmented manufacturing approach has significant drawbacks: firstly, it increases the number of manufacturing steps and overall assembly time, leading to a longer production cycle; secondly, the connection points are often weak points in the structure, easily becoming stress concentration points, which can easily lead to fatigue failure or fracture during service. Furthermore, due to the complexity of I-beam stiffened panel structures, especially for those with large curvature, the assembly difficulty of segmented manufacturing structures is further increased. At this point, the spatial positioning relationship between the segmented units is complex, and the requirements for assembly accuracy are extremely high. Traditional methods are difficult to guarantee the precise alignment of the connecting surfaces and the consistency of the overall structure, thus affecting the performance and reliability of the final product.

[0003] Therefore, there is an urgent need for a co-curing molding device and method for I-shaped reinforced wall panels to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a co-curing molding device and method for I-shaped stiffened wall panels, which can realize the molding and manufacturing of integral I-shaped stiffened wall panels and improve molding quality and efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] On one hand, the present invention provides a co-curing molding apparatus for I-shaped stiffened wall panels, comprising:

[0007] A molding body having a molding curved surface, the molding curved surface being used to lay the skin preform;

[0008] A plurality of molding components are arranged at intervals along a first direction on the molding body. Each molding component includes a molding mold and an I-shaped rib preform. The I-shaped rib preform has a first groove and a second groove on its two sides. The molding mold includes a positioning core mold, a pressure core mold, two axial positioning blocks, and a plurality of lateral positioning blocks. The positioning core mold and the pressure core mold are respectively embedded in the first groove and the second groove. The two axial positioning blocks and the plurality of lateral positioning blocks protrude from the positioning core mold. The two axial positioning blocks are respectively disposed at both ends of the positioning core mold. The plurality of lateral positioning blocks are spaced apart along the length direction of the positioning core mold and are located between the two axial positioning blocks.

[0009] The positioning mold includes a support frame, two axial positioning claws, several lateral positioning claws, and several clamping components. The side walls on both sides of the support frame are a first side wall and a second side wall, respectively. The two axial positioning claws and several lateral positioning claws are all disposed on the first side wall. The axial positioning claws are fixedly connected to the axial positioning block, and the lateral positioning claws abut against and fit against the end face of the lateral positioning block. The several clamping components are rotatably connected to the second side wall, and the clamping components are configured to press the pressure core mold so that the pressure core mold fits tightly against the I-shaped rib preform.

[0010] As a preferred technical solution of the above-mentioned I-shaped reinforced wall panel co-curing molding device, the positioning core mold includes a molding section, a molding plate and two support sections. The two support sections are fixed on opposite sides of the molding section. The I-shaped rib preform includes an outer edge strip, an inner edge strip and a web. The web is vertically connected between the outer edge strip and the inner edge strip. The two support sections abut against the outer edge strip and the inner edge strip respectively. The molding section abuts against the web. The molding plate is embedded in the molding section and is made of a rigid material. The connection between the support section and the molding section is provided with a rounded corner structure. The two axial positioning blocks and several lateral positioning blocks protrude from the molding plate.

[0011] As a preferred technical solution of the above-mentioned I-shaped reinforced wall panel co-curing molding device, the positioning core mold is composed of an inner layer and an outer layer. The outer layer covers the outer surface of the inner layer to form an integrated double-layer composite structure. The outer layer is made of rubber material, the inner layer is made of carbon fiber composite material, and the molding plate is embedded in the inner layer.

[0012] As a preferred technical solution of the above-mentioned I-shaped reinforced wall panel co-curing molding device, the molding component further includes a first cover plate, the outer edge strip is pressed onto the skin preform, and the first cover plate covers the inner edge strip.

[0013] As a preferred technical solution of the above-mentioned I-shaped reinforced wall panel co-curing molding device, the molding component further includes a second cover plate and two rubber blocks. The second cover plate is pressed onto the skin preform, and the two rubber blocks respectively abut against the positioning core mold and the pressure core mold, and the rubber blocks abut between the first cover plate and the second cover plate.

[0014] As a preferred technical solution of the above-mentioned I-shaped reinforced wall panel co-curing molding device, the clamping assembly includes two spring pins and a clamping member. The clamping member is rotatably connected to the second side wall. The two spring pins are spaced apart and built into the clamping member. One end of each spring pin extends out of the clamping member and can apply a clamping force to the pressure mandrel.

[0015] As a preferred technical solution of the above-mentioned I-shaped reinforced wall panel co-curing molding device, the I-shaped reinforced wall panel co-curing molding device further includes a plurality of first positioning components. The plurality of first positioning components are spaced apart on the molding body along the first direction, and the plurality of first positioning components are arranged in a one-to-one correspondence with the plurality of molding components. The first positioning component includes two positioning pins. The two positioning pins are arranged opposite to each other on both sides of the molding body along the second direction. Positioning blocks are respectively provided at both ends of the support frame. The positioning blocks are provided with slots. The positioning pins are correspondingly inserted into the slots. The first direction and the second direction are perpendicular to each other.

[0016] As a preferred technical solution of the above-mentioned I-shaped reinforced wall panel co-curing molding device, the first positioning component further includes two dovetail groove seats, which are correspondingly arranged with the positioning block, and the dovetail groove seats protrude from the molding body. The positioning block has a snap-fit ​​part, which can be slidably embedded in the dovetail groove seat and fixed by a locking member.

[0017] As a preferred technical solution of the above-mentioned I-shaped reinforced wall panel co-curing molding device, the I-shaped reinforced wall panel co-curing molding device further includes a plurality of second positioning components, which are arranged one-to-one with a plurality of first positioning components. Each second positioning component includes two fixed supports, which are arranged opposite to each other on both sides of the molding body along the second direction. Each fixed support is provided with a slot, and both ends of the positioning core mold are respectively engaged in the slot.

[0018] On the other hand, the present invention also provides a method for co-curing and molding I-shaped stiffened wall panels, applicable to the co-curing and molding apparatus for I-shaped stiffened wall panels in any of the above-mentioned embodiments, comprising the following steps:

[0019] S1: Lay the skin preform onto the shaped curved surface;

[0020] S2: The positioning core mold and the pressure core mold are respectively embedded in the first groove and the second groove of the I-shaped rib preform to form an integral structure;

[0021] S3: Connect the axial positioning claw of the positioning mold to the axial positioning block, and make the lateral positioning claw abut against the end face of the lateral positioning block.

[0022] S4: Rotate the clamping assembly to press against the pressure core mold so that the pressure core mold and the I-shaped rib preform are tightly fitted together;

[0023] S5: Position the molding component and the skin preform together;

[0024] S6: Remove the positioning mold and attach the two ends of the positioning core mold to the fixed supports on both sides of the molding body.

[0025] S7: Cover the inner edge strip of the I-shaped rib preform with the first cover plate, press the second cover plate onto the skin preform, and place a rubber block between the first cover plate and the second cover plate;

[0026] S8: Repeat steps S1 to S7 to position the remaining molding components with the skin preform;

[0027] S9: The molding component and the skin preform are encapsulated using breathable felt and vacuum bags;

[0028] S10: Perform curing and demolding treatment.

[0029] The beneficial effects of this invention are as follows:

[0030] This invention provides a co-curing molding apparatus and method for I-shaped reinforced wall panels. The co-curing molding apparatus for I-shaped reinforced wall panels includes: a molding body, several molding components, and a positioning mold. The molding body has a molding curved surface for laying a pre-formed skin body. Several molding components are spaced apart on the molding body along a first direction, and each molding component includes a molding mold and an I-shaped rib pre-formed body. The I-shaped rib pre-formed body has a first groove and a second groove on both sides. The molding mold includes a positioning core mold, a pressure core mold, two axial positioning blocks, and several lateral positioning blocks. The positioning core mold and the pressure core mold are respectively embedded in the first groove and the second groove. The two axial positioning claws and the several lateral positioning blocks protrude from the positioning core mold. The positioning mold includes a support frame, two axial positioning claws, several lateral positioning claws, and several clamping components. The two side walls of the support frame are respectively the first side wall and the second side wall. The two axial positioning blocks and several lateral positioning claws are all set on the first side wall. The axial positioning claws are fixedly connected to the axial positioning blocks, and the lateral positioning claws are abutted and attached to the end face of the lateral positioning blocks. Several clamping components are rotatably connected to the second side wall, and the clamping components are configured to press the pressure mold so that the pressure mold and the I-beam preform are tightly fitted.

[0031] This configuration combines the positioning core mold, the pressure core mold, and the I-shaped rib preform into a single assembly. A positioning mold is then introduced, which achieves axial fixation on one side via axial positioning claws and axial positioning blocks, and lateral positioning via lateral positioning claws and lateral positioning blocks. On the other side, a pressing assembly further achieves press-fit positioning. This completes the integrated gripping and transfer operation of the forming mold and the I-shaped rib preform, ultimately forming an integral molding structure from several molding components and the skin preform. This enables the molding and manufacturing of an integral I-shaped ribbed wall panel, minimizing external interference with the preform structure and effectively preventing shape distortion caused by external forces. This ensures the stability and precision of subsequent curing and molding, while also improving molding quality and efficiency. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the I-shaped reinforced wall panel co-curing molding device provided by the present invention;

[0033] Figure 2 A partial structural schematic diagram of the I-shaped reinforced wall panel co-curing molding device provided by the present invention. Figure 1 ;

[0034] Figure 3 A partial structural schematic diagram of the I-shaped reinforced wall panel co-curing molding device provided by the present invention. Figure 2 ;

[0035] Figure 4 A partial structural schematic diagram of the I-shaped reinforced wall panel co-curing molding device provided by the present invention. Figure 3 ;

[0036] Figure 5 Schematic diagram of the molding die and I-beam preform provided by the present invention Figure 1 ;

[0037] Figure 6 Schematic diagram of the molding die and I-beam preform provided by the present invention Figure 2 ;

[0038] Figure 7 Schematic diagram of the positioning mold and molding assembly provided by the present invention Figure 1 ;

[0039] Figure 8 Schematic diagram of the positioning mold and molding assembly provided by the present invention Figure 2 ;

[0040] Figure 9 for Figure 8 Sectional view along line AA;

[0041] Figure 10 for Figure 8 Sectional view along the BB direction;

[0042] Figure 11 This is a cross-sectional view of the molding die and the I-beam preform provided by the present invention;

[0043] Figure 12 This is a schematic diagram of the positioning core mold provided by the present invention;

[0044] Figure 13 This is a schematic diagram of the structure of the pressure core mold provided by the present invention;

[0045] Figure 14 Schematic diagram of the positioning mold and molding assembly provided by the present invention Figure 3 ;

[0046] Figure 15 for Figure 14 A magnified view of part C in the middle;

[0047] Figure 16 A partial structural schematic diagram of the I-shaped reinforced wall panel co-curing molding device provided by the present invention. Figure 4 ;

[0048] Figure 17 for Figure 16 A magnified view of part D in the middle;

[0049] Figure 18A partial structural schematic diagram of the I-shaped reinforced wall panel co-curing molding device provided by the present invention. Figure 5 ;

[0050] Figure 19 for Figure 18 A magnified view of part E in the middle;

[0051] Figure 20 A partial structural schematic diagram of the I-shaped reinforced wall panel co-curing molding device provided by the present invention. Figure 6 ;

[0052] Figure 21 A partial structural schematic diagram of the I-shaped reinforced wall panel co-curing molding device provided by the present invention. Figure 7 .

[0053] in:

[0054] 1. Main body; 2. Skin preform;

[0055] 3. Molded components;

[0056] 31. Molding mold; 311. Positioning core mold; 3111. Molding section; 3112. Molding plate; 3113. Support section; 312. Pressure core mold; 313. Axial positioning block; 314. Lateral positioning block;

[0057] 32. I-shaped preform; 321. Inner edge strip; 322. Outer edge strip; 323. Web;

[0058] 33. First cover plate; 34. Second cover plate; 35. Rubber stop block; 36. First stop strip; 37. Second stop strip;

[0059] 4. Positioning mold; 41. Support frame; 42. Axial positioning claw; 43. Lateral positioning claw; 44. Clamping assembly; 441. Spring pin; 442. Clamping component;

[0060] 5. Rounded corner structure; 6. Inner layer; 7. Outer layer; 8. Fixing pin;

[0061] 9. First positioning component; 91. Positioning pin; 92. Dovetail groove seat;

[0062] 10. Positioning block; 11. Snap-fit ​​part;

[0063] 12. Second positioning component; 121. Fixed support. Detailed Implementation

[0064] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments and examples described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0065] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0066] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0067] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0068] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0069] like Figures 1 to 21As shown, this embodiment provides a co-curing molding device for I-shaped reinforced wall panels. The device includes: a molding body 1, several molding components 3, and a positioning mold 4. The molding body 1 has a molding curved surface for laying a pre-formed skin body 2. Several molding components 3 are spaced apart on the molding body 1 along a first direction. Each molding component 3 includes a molding mold 31 and an I-shaped rib pre-formed body 32. The I-shaped rib pre-formed body 32 has a first groove and a second groove on both sides. The molding mold 31 includes a positioning core mold 311, a pressure core mold 312, two axial positioning blocks 313, and several lateral positioning blocks 314. The positioning core mold 311 and the pressure core mold 312 are respectively embedded in the first groove and the second groove. The two axial positioning claws 42 and the several lateral positioning blocks 314 protrude from the positioning core mold 311. Positioning blocks 313 are respectively disposed at both ends of positioning core mold 311. Several lateral positioning blocks 314 are spaced apart along the length direction of positioning core mold 311 and located between two axial positioning blocks 313. Positioning mold 4 includes support frame 41, two axial positioning claws 42, several lateral positioning claws 43, and several clamping components 44. The side walls on both sides of support frame 41 are the first side wall and the second side wall, respectively. The two axial positioning blocks 313 and several lateral positioning claws 43 are all disposed on the first side wall. The axial positioning claws 42 are correspondingly connected to the axial positioning blocks 313 through fixing pins 8. The lateral positioning claws 43 are correspondingly abutted and attached to the end face of the lateral positioning blocks 314. Several clamping components 44 are rotatably connected to the second side wall, and the clamping components 44 are configured to press the pressure core mold 312 so that the pressure core mold 312 and the I-shaped rib preform 32 are tightly attached.

[0070] This configuration integrates the positioning core mold 311, the pressure core mold 312, and the I-beam preform 32 into a combined assembly. A positioning mold 4 is then introduced, which achieves axial fixation on one side via an axial positioning claw 42 and an axial positioning block 313, and lateral positioning via a lateral positioning claw 43 and a lateral positioning block 314. On the other side, a pressing assembly 44 further achieves pressing positioning. This completes the integrated gripping and transfer operation of the forming mold 31 and the I-beam preform 32, ultimately forming an integral molding structure from several molding components 3 and the skin preform 2. This achieves the molding and manufacturing of an integral I-beam reinforced wall panel, minimizing external interference with the preform structure and effectively preventing shape distortion caused by external forces. This ensures the stability and precision of subsequent curing and molding, while improving molding quality and efficiency. It should be noted that the first direction and the second direction are respectively... Figure 1 The arrow in the image indicates the direction.

[0071] Specifically, this embodiment provides the following exemplary technical solution: Please refer to Figure 11As shown, the positioning core mold 311 includes a forming section 3111, a forming plate 3112, and two support sections 3113. The two support sections 3113 are fixed to the opposite sides of the forming section 3111. The I-shaped rib preform 32 includes an outer edge strip 322, an inner edge strip 321, and a web 323. The web 323 is vertically connected between the outer edge strip 322 and the inner edge strip 321 to form an "I" shaped structure. The two support sections 3113 abut against the outer edge strip 322 and the inner edge strip 321 respectively. The forming section 3111 abuts against the web 323. The forming plate 3112 is embedded in the forming section 3111 and is made of a hard material. A rounded corner structure 5 is provided at the connection between the support section 3113 and the forming section 3111. Two axial positioning blocks 313 and several lateral positioning blocks 314 are protruding from the forming plate 3112. It should be noted that the outer edge strip 322 is the flange connected to the skin preform 2, the inner edge strip 321 is the flange that is far away from the skin and located on the inner side, and the web plate 323 is the middle vertical plate.

[0072] This configuration, with a rigid molding plate 3112 embedded in the key area of ​​the web 323 of the I-beam preform 32 corresponding to the positioning core mold 311, not only ensures uniform pressure on the outer edge strip 322, inner edge strip 321, and R-angle transition area of ​​the I-beam preform 32 during curing by optimizing the pressure transmission path, effectively avoiding resin aggregation or localized resin deficiency defects caused by uneven pressure distribution; it also significantly improves the overall rigidity of the positioning core mold 311. Therefore, during the curing heating and pressurization stages, it provides stable lateral support for the web 323 of the I-beam preform 32, thereby completely suppressing the tilting, buckling, or displacement deformation of the web 323 under thermo-compression stress, ensuring the dimensional accuracy of the perpendicularity between the web 323 and the outer edge strip 322 and inner edge strip 321. Furthermore, the rounded corner structure 5 of the support section 3113 and the forming section 3111 further provides a close fit and support to the R-corner transition area of ​​the I-shaped rib preform 32, ensuring the accuracy of the forming surface. Furthermore, the forming plate 3112 is made of metal.

[0073] Alternatively, please refer to Figure 12 and Figure 13As shown, the positioning core mold 311 is composed of an inner layer 6 and an outer layer 7. The outer layer 7 covers the outer surface of the inner layer 6 to form an integrated double-layer composite structure. The outer layer 7 is made of rubber material, and the inner layer 6 is made of carbon fiber composite material. The molding plate 3112 is embedded in the inner layer 6. The pressure core mold 312 is composed of a first inner layer and a first outer layer. The first outer layer covers the outer surface of the first inner layer to form an integrated double-layer composite structure. The first outer layer is made of rubber material, and the first inner layer is made of carbon fiber composite material. This design, combining the characteristics of rubber and carbon fiber composite materials, allows the molding die 31 to balance appropriate flexibility with a certain degree of rigidity. The flexible portion possesses the ability to conform to curved surfaces, fundamentally solving the problem of uneven pressure in the R-angle region of the large-curvature I-beam preform 32. The rigid portion retains a rigid skeleton or rigid support structure, maintaining high overall bending stiffness and dimensional stability. It provides precise lateral restraint and support for the I-beam preform 32, preventing it from tipping or shifting during curing due to resin rheology, thermal expansion, or lateral pressure components, and ensuring its positioning reference with the skin preform 2. Through uniform pressure distribution and reasonable stiffness matching, it significantly reduces the thermal stress and residual stress of the component during curing, resulting in a substantial reduction in the springback, warping, or torsional deformation of the surface after co-curing of the I-beam and skin, effectively improving surface accuracy.

[0074] Optionally, the molding component 3 also includes a first cover plate 33, with the outer edge strip 322 pressed onto the skin preform 2 and the first cover plate 33 covering the inner edge strip 321. With this configuration, this embodiment employs a combined molding structure of a semi-flexible mold (positioning core mold 311, pressure core mold 312) and a rigid mold (molding body 1, first cover plate 33), specifically designed for the co-curing molding of the I-beam preform 32 with large curvature and the skin preform 2. The semi-flexible mold fits into the R-corner transition area and the curved surface area of ​​the edge strip of the I-beam preform 32, utilizing its pressure self-balancing characteristics to uniformly transmit the curing pressure to the complex transition area that is difficult for traditional rigid molds to reach under hot-pressing conditions, fundamentally eliminating uneven pressure and resin accumulation / insufficient glue defects in the R-corner transition area; the rigid mold provides a precise positioning reference and rigidity support for the overall structure, ensuring the positional accuracy of the I-beam preform 32 and the skin preform 2. Through the synergistic effect of the two, not only was a uniform pressure distribution achieved in complex curvature regions, but solidification deformation was also significantly controlled, ultimately greatly improving the surface accuracy of the molded components and meeting the requirements for high-level aerodynamic shape and assembly coordination.

[0075] It should be noted that the first cover plate 33 covers the inner edge strip 321 and is usually a composite prepreg or metal sheet. During the molding and manufacturing stage, the first cover plate 33 can effectively constrain the fiber layup in the inner edge strip 321 area during the curing process by providing uniform mechanical clamping force and a clear resin flow boundary, preventing fiber bending and excessive resin accumulation caused by uneven curvature of the mold surface or uneven pressure. At the same time, the bonding interface of the first cover plate 33 provides a controllable channel for resin discharge, which helps to reduce the formation of internal defects such as pores and delamination. This ensures the material density and structural integrity of the inner edge strip 321 area from the manufacturing source, and ultimately achieves high reliability and consistency of mechanical properties (such as compressive strength and interlaminar shear strength) in mass production, significantly improving the molding quality.

[0076] Alternatively, please refer to Figure 18 and Figure 19 As shown, in order to further improve the curing quality and precision of the skin preform 2 and the I-beam preform 32, and to facilitate subsequent encapsulation and curing and prevent resin overflow, the molding component 3 also includes two first baffles 36, a second baffle 37, a second cover plate 34 and two rubber blocks 35. The second cover plate 34 is pressed onto the skin preform 2. The two rubber blocks 35 respectively abut against the inner sidewalls of the positioning core mold 311 and the pressure core mold 312, and the rubber blocks 35 abut between the first cover plate 33 and the second cover plate 34. The two first baffles are respectively set on both sides of the inner edge strip 321, and the second baffle 37 is set between the inner edge strip 321 and the rubber blocks 35.

[0077] Optionally, the clamping assembly 44 includes two spring pins 441 and a clamping member 442. The clamping member 442 is rotatably connected to the second side wall. The two spring pins 441 are spaced apart and built into the clamping member 442, with one end of the spring pin 441 extending out of the clamping member 442 and capable of applying clamping force to the pressure mandrel 312. The spring pin 441 provides constant and slightly adjustable pressure in the compressed state, which can automatically adapt to uneven thickness of the I-shaped rib preform 32 or small deformation of the mold, ensuring uniform distribution of clamping force between the entire preform and the mold surface. Simply lower the clamping member 442 and the spring pin 441 can automatically complete the clamping without the need for repeated manual adjustment of bolts or external pressure devices, reducing the complexity of operation. During the clamping process, the spring pin 441 can adapt to thickness fluctuations and automatically compensate for thickness deviation of the I-shaped rib preform 32 or mold assembly gap through elastic deformation, without the need for manual fine adjustment. In addition, the two spaced spring pins 441 ensure that the clamping force is evenly distributed along the surface of the I-shaped rib preform 32, avoiding local stress concentration.

[0078] Alternatively, please refer to Figure 14 and Figure 15As shown, the I-shaped reinforced wall panel co-curing molding device also includes several first positioning components 9. These first positioning components 9 are spaced apart on the molding body 1 along a first direction, and each first positioning component 9 corresponds to one of the molding components 3. Each first positioning component 9 includes two positioning pins 91, which are positioned opposite each other on both sides of the molding body 1 along a second direction. Positioning blocks 10 are respectively provided at both ends of the support frame 41. The positioning blocks 10 have slots, and the positioning pins 91 are inserted into these slots. The first and second directions are perpendicular to each other. This arrangement allows the positioning mold 4 to be pre-positioned via the positioning pins 91 on both sides, ensuring a precise positional relationship between the molding mold 31, the I-shaped rib preform 32, and the skin preform 2 on the molding body 1, providing a reliable guarantee for subsequent curing and successful demolding.

[0079] Furthermore, the first positioning component 9 also includes two dovetail groove seats 92, which are correspondingly arranged with the positioning block 10 and protrude from the molding body 1. The positioning block 10 has a snap-fit ​​part 11, which can be slidably embedded in the dovetail groove seat 92 and fixed by a locking member. The locking member can be a locking screw, a wedge block, or an interference fit. With this arrangement, the snap-fit ​​part 11 automatically slides into a predetermined position through the inclined guide surface of the dovetail groove seat 92, achieving limited centering. It can provide further auxiliary positioning based on the positioning pin 91. Simultaneously, the asymmetrical or symmetrical trapezoidal structure of the dovetail groove seat 92 can limit lateral displacement or rotation of the mating parts under force. The mating surface of the dovetail groove seat 92 can remain in the same position after multiple disassemblies and reassemblies, often used in tooling or modules that require frequent replacement to ensure repeatable positioning accuracy.

[0080] Optionally, in order to prevent the positioning core mold 311 from moving during the manufacturing process and to ensure the axiality of the I-shaped rib preform 32, the I-shaped ribbed wall panel co-curing molding device further includes a number of second positioning components 12. The number of second positioning components 12 are arranged in a one-to-one correspondence with the number of first positioning components 9, and the second positioning components 12 are closer to the molding component 3 than the first positioning components 9. The second positioning component 12 includes two fixed supports 121. The two fixed supports 121 are arranged opposite to each other on both sides of the molding body 1 along the second direction, and the fixed supports 121 are provided with slots. The two ends of the positioning core mold 311 are respectively engaged in the slots.

[0081] Furthermore, the fixed support 121 includes a first base and a second base arranged opposite to each other, with a groove extending along a second direction between the first base and the second base. Both the first base and the second base are detachably mounted on the molding body 1, specifically through bolts, positioning pins 91, or a quick-locking structure for fixing and separation. This detachable configuration allows operators to flexibly adjust the installation position of the fixed support 121 according to the actual layout requirements of the I-beam preform 32 on the molding body 1, achieving differentiated positioning for different curvatures or sections. Furthermore, by replacing the first base and the second base with different thicknesses or groove widths, or by adjusting the relative distance between the first base and the second base, the effective width of the groove can be changed, thus enabling the fixed support 121 structure to adapt to various specifications of positioning mandrels 311.

[0082] This embodiment also provides a method for co-curing and molding I-shaped stiffened wall panels, applicable to the co-curing and molding apparatus for I-shaped stiffened wall panels in the above-described scheme, including the following steps:

[0083] S1: The skin preform 2 is laid on the molding surface. Specifically, prepreg is laid on the molding body 1 according to the layup sequence and a vacuum operation is performed to prepare and form the skin preform 2.

[0084] S2: The positioning core mold 311 and the pressure core mold 312 are respectively embedded in the first groove and the second groove of the I-shaped rib preform 32 to form an integral structure. Specifically, firstly, two "C"-shaped preforms are laid and pre-compacted using an I-shaped rib laying fixture (male mold). Then, the two "C"-shaped preforms are closed, and then tack strips are filled. The "I"-shaped preform and the upper and lower edge strip preforms are combined. After pre-compacting the combined preform, the preform is cut to the net size using a cutting jig to form the I-shaped rib preform 32. The positioning core mold 311 and the pressure core mold 312 are prepared using a core mold fixture. The I-shaped rib preform 32 is assembled with the positioning core mold 311 and the pressure core mold 312 into a whole and pre-compacted. Figure 6 As shown.

[0085] S3: Connect the axial positioning claws 42 of the positioning mold 4 to the axial positioning block 313, and make the lateral positioning claws 43 abut against the end face of the lateral positioning block 314. Specifically, transfer the forming mold 31 and the I-beam preform 32 to the positioning mold 4. Axial positioning is achieved by matching the fixing pins 8 in the axial positioning claws 42 at both ends of the positioning mold 4 with the round holes of the axial positioning block 313. Lateral positioning is achieved by the lateral positioning claws 43 abutting against the end face of the lateral positioning block 314.

[0086] S4: Rotate the clamping assembly 44 to press it against the pressure mandrel 312, so that the pressure mandrel 312 fits tightly against the I-shaped rib preform 32. Specifically, after the positioning is completed in step S3, the clamping member 442 is lowered, and the pressure mandrel 312 is pressed against it by the pressure spring pin 441, so that it is pressed tightly against the I-shaped rib preform 32.

[0087] S5: Combine and position the molding component 3 and the skin preform 2. Specifically, the slot of the positioning block 10 is inserted into the positioning pin 91 on the molding body 1, and the positioning is assisted by the dovetail seat 92, thereby transferring the I-shaped rib preform 32 and the molding mold 31 onto the molding body 1, thus realizing the positioning of the molding component 3 and the skin preform 2.

[0088] S6: Remove the positioning mold 4 and attach the two ends of the positioning core mold 311 to the fixed supports 121 on both sides of the molding body 1.

[0089] S7: Cover the inner edge strip 321 of the I-shaped rib preform 32 with the first cover plate 33, press the second cover plate 34 onto the skin preform 2, place a rubber block 35 between the first cover plate 33 and the second cover plate 34, place a first stop strip 36 on the side of the inner edge strip 321, and set a second stop strip 37 between the inner edge strip 321 and the rubber block 35.

[0090] S8: Repeat steps S1 to S7 to position the remaining molding components 3 and the skin preform 2.

[0091] S9: The molding component 3 and the skin preform 2 are encapsulated using breathable felt and vacuum bags.

[0092] S10: Perform curing and demolding treatment.

[0093] 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 of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A co-curing molding device for I-shaped reinforced wall panels, characterized in that, include: The molding body (1) has a molding surface, which is used to lay the skin preform (2). A plurality of molding components (3) are arranged at intervals along a first direction on the molding body (1), and each molding component (3) includes a molding mold (31) and an I-beam preform (32). The I-beam preform (32) has a first groove and a second groove on its two sides respectively. The molding mold (31) includes a positioning core mold (311), a pressure core mold (312), two axial positioning blocks (313), and a plurality of lateral positioning blocks (314). 311) Corresponding to the pressurizing core mold (312), it is respectively embedded in the first groove and the second groove. The two axial positioning blocks (313) and the several lateral positioning blocks (314) are all protruding from the positioning core mold (311). The two axial positioning blocks (313) are respectively disposed at both ends of the positioning core mold (311). The several lateral positioning blocks (314) are spaced apart along the length direction of the positioning core mold (311) and are located between the two axial positioning blocks (313). The positioning mold (4) includes a support frame (41), two axial positioning claws (42), several lateral positioning claws (43), and several clamping components (44). The side walls on both sides of the support frame (41) are the first side wall and the second side wall, respectively. The two axial positioning claws (42) and several lateral positioning claws (43) are all protruding from the first side wall. The axial positioning claws (42) are fixedly connected to the axial positioning block (313), and the lateral positioning claws (43) are abutted against and attached to the end face of the lateral positioning block (314). Several clamping components (44) are rotatably connected to the second side wall, and the clamping components (44) are configured to press the pressure core mold (312) so that the pressure core mold (312) and the I-beam preform (32) are tightly fitted.

2. The I-shaped reinforced wall panel co-curing molding device according to claim 1, characterized in that, The positioning core mold (311) includes a forming section (3111), a forming plate (3112), and two supporting sections (3113). The two supporting sections (3113) are fixedly connected to the opposite sides of the forming section (3111). The I-beam preform (32) includes an inner edge strip (321), an outer edge strip (322), and a web (323). The web (323) is vertically connected between the outer edge strip (322) and the inner edge strip (321). The two supporting sections (3113) respectively abut against the forming plate. The outer edge strip (322) and the inner edge strip (321) are connected. The forming section (3111) abuts against the web plate (323). The forming plate (3112) is embedded in the forming section (3111) and the forming plate (3112) is made of hard material. The connection between the support section (3113) and the forming section (3111) is provided with a rounded corner structure (5). The two axial positioning blocks (313) and several lateral positioning blocks (314) are all protruding from the forming plate (3112).

3. The I-shaped reinforced wall panel co-curing molding device according to claim 2, characterized in that, The positioning core mold (311) is composed of an inner body (6) and an outer body (7). The outer body (7) covers the outer surface of the inner body (6) to form an integrated double-layer composite structure. The outer body (7) is made of rubber material, and the inner body (6) is made of carbon fiber composite material. The molding plate (3112) is embedded in the inner body (6).

4. The I-shaped reinforced wall panel co-curing molding device according to claim 2, characterized in that, The molding component (3) further includes a first cover plate (33), the outer edge strip (322) is pressed onto the skin preform (2), and the first cover plate (33) covers the inner edge strip (321).

5. The I-shaped reinforced wall panel co-curing molding device according to claim 4, characterized in that, The molding component (3) further includes a second cover plate (34) and two rubber blocks (35). The second cover plate (34) is pressed onto the skin preform (2). The two rubber blocks (35) respectively abut against the positioning core mold (311) and the pressure core mold (312), and the rubber blocks (35) abut between the first cover plate (33) and the second cover plate (34).

6. The I-shaped reinforced wall panel co-curing molding apparatus according to any one of claims 1-5, characterized in that, The clamping assembly (44) includes two spring pins (441) and a clamping member (442). The clamping member (442) is rotatably connected to the second side wall. The two spring pins (441) are spaced apart and built into the clamping member (442). One end of the spring pin (441) extends out of the clamping member (442) and can apply a clamping force to the pressure mandrel (312).

7. The I-shaped reinforced wall panel co-curing molding apparatus according to any one of claims 1-5, characterized in that, The I-shaped reinforced wall panel co-curing molding device further includes a plurality of first positioning components (9), which are spaced apart on the molding body (1) along the first direction. The plurality of first positioning components (9) are arranged one-to-one with the plurality of molding components (3). The first positioning component (9) includes two positioning pins (91), which are arranged opposite to each other on both sides of the molding body (1) along the second direction. Positioning blocks (10) are respectively provided at both ends of the support frame (41). The positioning blocks (10) have slots, and the positioning pins (91) are correspondingly inserted into the slots. The first direction and the second direction are perpendicular to each other.

8. The I-shaped reinforced wall panel co-curing molding device according to claim 7, characterized in that, The first positioning component (9) further includes two dovetail groove seats (92), which are correspondingly arranged with the positioning block (10), and the dovetail groove seats (92) protrude from the molding body (1). The positioning block (10) has a snap-fit ​​part (11), which can be slidably embedded in the dovetail groove seat (92) and fixed by a locking member.

9. The I-shaped reinforced wall panel co-curing molding device according to claim 7, characterized in that, The I-shaped reinforced wall panel co-curing molding device further includes several second positioning components (12), which are arranged one-to-one with several first positioning components (9). The second positioning component (12) includes two fixed supports (121), which are arranged opposite to each other on both sides of the molding body (1) along the second direction. The fixed supports (121) are provided with slots, and the two ends of the positioning core mold (311) are respectively engaged in the slots.

10. A method for co-curing and molding an I-shaped reinforced wall panel, characterized in that, The co-curing molding apparatus for I-shaped stiffened wall panels according to any one of claims 1-9 includes the following steps: S1: The skin preform (2) is laid on the shaped curved surface; S2: The positioning core mold (311) and the pressure core mold (312) are respectively embedded in the first groove and the second groove of the I-shaped rib preform (32) to form an integral structure; S3: Connect the axial positioning claw (42) of the positioning mold (4) to the axial positioning block (313) and make the lateral positioning claw (43) abut against the end face of the lateral positioning block (314). S4: Rotate the pressing assembly (44) to press against the pressure core mold (312) so that the pressure core mold (312) and the I-shaped rib preform (32) fit tightly together; S5: Combine and position the molding component (3) with the skin preform (2); S6: Remove the positioning mold (4) and attach the two ends of the positioning core mold (311) to the fixed supports (121) on both sides of the molding body (1). S7: Cover the inner edge strip (321) of the I-shaped rib preform (32) with the first cover plate (33), press the second cover plate (34) onto the skin preform (2), and place a rubber block (35) between the first cover plate (33) and the second cover plate (34). S8: Repeat steps S1 to S7 to position the remaining molding components (3) with the skin preform (2); S9: The molding component (3) and the skin preform (2) are encapsulated using breathable felt and vacuum bags; S10: Perform curing and demolding treatment.

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