A complex curvature stiffened wallboard co-bonding inner cavity auxiliary tool and bonding process

Abstract

The present application relates to the technical field of stiffened wallboard bonding, in particular to a complex curvature stiffened wallboard co-bonding inner cavity auxiliary tool and bonding process. It comprises a connecting piece, a supporting assembly and an auxiliary piece. The connecting piece penetrates each supporting assembly in turn. Multiple supporting assemblies are distributed along the length direction of the omega-shaped rib on the complex curvature stiffened wallboard. The auxiliary piece wraps each supporting assembly along the length direction of the omega-shaped rib and is used to support the inner cavity of the omega-shaped rib. The purpose of the complex curvature stiffened wallboard co-bonding inner cavity auxiliary tool and bonding process is to solve the problems of high cost, great manufacturing difficulty, poor quality stability and difficult subsequent processing in the manufacturing process of the existing complex feature omega-shaped stiffened wallboard.

Description

Technical Field

[0001] This invention relates to the field of adhesive bonding technology for stiffened wall panels, specifically to an auxiliary tooling and adhesive bonding process for co-bonding stiffened wall panels with complex curvature. Background Technology

[0002] Ω-shaped stiffened panels are a common structural form for composite fuselage panels in aircraft, especially in large fuselage panel structures. The outer surface of the fuselage skin has a large curvature change, and the Ω-shaped stiffeners on the inner side of the panel will also twist and change with the inner surface of the skin. At the same time, in order to coordinate the overall load distribution of the fuselage structure, the Ω-shaped stiffeners often have variable cross-section characteristics. How to achieve complete bonding of Ω-shaped stiffeners with complex characteristics such as large size, complex curvature, variable cross-section, and torsion is the key technology for manufacturing large-sized composite stiffened panels with complex curvature.

[0003] For large-sized, complex curvature Ω-shaped composite stiffened panels, the current common process is to first cure the Ω-shaped stiffeners and then co-bond them with the uncured skin. The traditional method for bonding complex Ω-shaped stiffeners is to place a customized airbag structure inside the Ω-shaped stiffener. The airbag acts as a vacuum bag structure and isolation material, isolating the internal and external environments of the vacuum bag. During the curing process, equal circumferential pressure is applied along the free end of the airbag structure to compress and cure the skin layer under the Ω-shaped stiffener. Due to the presence of large-sized, complexly curved, variable-section, and torsional Ω-shaped ribs in the wall panels, the airbag structure used requires a complete set of specially manufactured airbag molds for custom-made airbags, resulting in extremely high manufacturing costs. Because of the customized nature of the airbags, precise placement within the Ω-shaped rib cavities is crucial, making them highly susceptible to quality issues due to inaccurate placement. Furthermore, the mold-manufacturing process introduces precision problems, and the thickness of the airbag's outer wall structure cannot be precisely controlled, leading to significant deviations in applied loads and temperature transmission, further contributing to quality issues. After the parts have cured, removing the airbags from the cavities of the large-sized, complex-curvature, variable-section, and torsional Ω-shaped ribs is extremely difficult, potentially damaging the stringers in severe cases. Existing custom-made airbag structures suffer from high operational difficulty, high costs, and poor quality stability.

[0004] Therefore, the inventors have provided an auxiliary tooling and bonding process for co-bonding of complex curvature stiffened wall panels with internal cavities. Summary of the Invention

[0005] (1) Technical problems to be solved

[0006] This invention provides an auxiliary tooling and bonding process for co-bonding of complex curvature stiffened wall panels, which solves the technical problems of high cost, high manufacturing difficulty, poor quality stability, and difficulty in subsequent processing in the existing manufacturing process of complex Ω-shaped stiffened wall panels.

[0007] (2) Technical solution

[0008] A first aspect of the present invention provides an auxiliary tooling for co-bonding an inner cavity of a complex curvature stiffened wall panel, comprising a connector, a support assembly, and an auxiliary component. The connector sequentially connects each of the support assemblies, and a plurality of the support assemblies are sequentially spaced along the length direction of the Ω-shaped ribs on the complex curvature stiffened wall panel. The auxiliary component wraps around each of the support assemblies along the length direction of the Ω-shaped ribs and is used to fit and support the inner cavity of the Ω-shaped ribs.

[0009] Furthermore, the connector is linear or has a flexible spiral shape.

[0010] Furthermore, the upper width of the support component is 20% to 60% of the height of the inner cavity of the rib, and the lower width is 20% to 60% of the height of the inner cavity of the rib.

[0011] Furthermore, the distance between two adjacent support components is 2 to 10 times the height of the rib cavity.

[0012] Furthermore, the support component is a sandwich material with a soft outer layer and a hard inner layer.

[0013] Furthermore, the auxiliary component includes, from the inside out, a vacuum sealing layer, a breathable material layer, and an insulating material layer wrapped around each of the support components.

[0014] Furthermore, the vacuum sealing layer is a tubular sealing layer or a sealing layer that is separated and then re-bonded.

[0015] Furthermore, the breathable material layer is a tubular closed layer or a closed layer that can be overlapped and separated.

[0016] Furthermore, the insulating material layer is a tubular closed layer or a closed layer that can be overlapped and separated.

[0017] A second aspect of the present invention provides a bonding process utilizing the aforementioned auxiliary tooling for co-bonding complex curvature stiffened wall panels with internal cavities, comprising the following steps:

[0018] Multiple sets of support components are connected by connectors;

[0019] Place the auxiliary component on the combination of the connector and the support assembly;

[0020] Flip the Ω-shaped rib so that the adhesive side is facing up, and place the assembled connector, the support assembly and the auxiliary component into the inner cavity of the Ω-shaped rib;

[0021] Place the triangular filling structure into the triangular area of ​​the Ω-shaped rib to make the bonding surface flat.

[0022] An adhesive layer is laid on the bonding surface of the Ω-shaped rib;

[0023] The adhesive surface of the Ω-shaped rib is placed on the upper surface of the uncured skin on the panel forming fixture, and external auxiliary materials are placed for sealing and curing.

[0024] (3) Beneficial effects

[0025] In summary, this invention connects multiple support components in series using connectors. The support components contact and are positioned and supported by auxiliary components with the Ω-shaped ribs, which greatly reduces the difficulty of manufacturing and operation, improves the manufacturing quality of parts, increases production efficiency and saves production costs. It is also applicable to the manufacturing of Ω-shaped stiffened wall panels with different complex configurations. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the internal cavity auxiliary tooling for co-bonding of complex curvature stiffened wall panels provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the working state of an auxiliary tooling for co-bonding a complex curvature stiffened wall panel, provided in an embodiment of the present invention.

[0029] Figure 3 This is a cross-sectional schematic diagram of an Ω-shaped stiffened wall panel provided in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of a structure provided by an embodiment of the present invention, showing the cooperation and installation of a support component and auxiliary parts;

[0031] Figure 5 This is a structural schematic diagram of an auxiliary component provided in an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of a connector and support assembly installed together according to an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of a support component provided in an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of another connector and support assembly provided in an embodiment of the present invention.

[0035] Figure 9 This is a schematic diagram of the structure of another support component provided in an embodiment of the present invention;

[0036] Figure 10 This is a schematic diagram of another connector and support assembly provided in an embodiment of the present invention for installation.

[0037] Figure 11 This is a schematic diagram of the structure of another support component provided in an embodiment of the present invention;

[0038] Figure 12 This is a schematic diagram of the first state of a co-bonding process for a complex curvature stiffened wall panel provided in an embodiment of the present invention;

[0039] Figure 13 This is a schematic diagram of the second state of a co-bonding process for a complex curvature stiffened wall panel provided in an embodiment of the present invention;

[0040] Figure 14 This is a schematic diagram of the third state of a co-bonding process for a complex curvature stiffened wall panel provided in an embodiment of the present invention;

[0041] Figure 15 This is a schematic diagram of the fourth state of a co-bonding process for a complex curvature stiffened wall panel provided in an embodiment of the present invention;

[0042] Figure 16 This is a schematic diagram of the fifth state of a co-bonding process for a complex curvature stiffened wall panel provided in an embodiment of the present invention;

[0043] Figure 17 This is a schematic diagram of the sixth state of a co-bonding process for a complex curvature stiffened wall panel provided in an embodiment of the present invention.

[0044] In the picture:

[0045] 1-Connector; 11-First connector; 111-Length of first connector; 12-Second connector; 121-Length of second connector; 13-Third connector; 131-Length of third connector; 2-Support assembly; 21-First support structure; 211-Upper structure of support structure; 212-Middle structure of support structure; 213-Lower structure of support structure; 214-Upper width of support structure; 215-Lower width of support structure; 216-Top surface of support structure; 217-Upper fillet of support structure; 218-Middle connection feature of support structure; 219-Lower fillet of support structure; 220-Lower bottom surface of support structure; 221 - Lower width of the support structure; 222 - Height of the support structure; 223 - Middle width of the support structure; 23 - Second support structure; 231 - Upper structure of the support structure; 232 - Middle structure of the support structure; 233 - Lower structure of the support structure; 234 - Upper width of the support structure; 235 - Lower width of the support structure; 236 - Top surface of the support structure; 237 - Upper fillet of the support structure; 238 - Middle connection feature of the support structure; 239 - Lower fillet of the support structure; 240 - Lower bottom surface of the support structure; 243 - Lower width of the support structure; 242 - Height of the support structure; 243 - Middle width of the support structure; 244 - Support Internal features of the support structure; 25-Third support structure; 251-Upper structure of the support structure; 252-Lower structure of the support structure; 253-Upper width of the support structure; 254-Lower width of the support structure; 255-Top surface of the support structure; 256-Upper rounded corner of the support structure; 257-Lower rounded corner of the support structure; 258-Lower bottom surface of the support structure; 259-Lower width of the support structure; 260-Height of the support structure; 3-Auxiliary component; 31-Vacuum sealing layer; 311-Upper side of the vacuum sealing layer; 312-Right side of the vacuum sealing layer; 313-Lower side of the vacuum sealing layer; 314-Left side of the vacuum sealing layer; 32-Air permeable Material layer; 321 - Upper side of breathable material; 322 - Right side of breathable material; 323 - Lower side of breathable material; 324 - Left side of breathable material; 33 - Insulation material layer; 331 - Upper side of insulation material; 332 - Right side of insulation material; 333 - Lower side of insulation material; 334 - Left side of insulation material; 4 - Triangular area filling structure; 41 - Rounded corner of triangular area filling structure; 5 - Adhesive layer; 6 - Skin; 7 - Ω-shaped rib; 71 - Rib inner cavity height; 72 - Rib inner cavity top structure; 73 - Rib inner cavity cap rounded corner; 74 - Rib inner cavity waist; 75 - Rib inner cavity waist middle width; 8 - Panel forming tooling. Detailed Implementation

[0046] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention. That is, the present invention is not limited to the described embodiments, and any modifications, substitutions and improvements to the parts, components and connection methods are covered without departing from the spirit of the present invention.

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," 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 product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to 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 invention.

[0049] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "install" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] Figure 1 This is a schematic diagram of the internal cavity auxiliary tooling for co-bonding of complex curvature stiffened wall panels provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the auxiliary tooling may include a connector 1, a support component 2, and an auxiliary component 3. The connector 1 sequentially connects to each support component 2. Multiple support components 2 are sequentially spaced along the length direction of the Ω-shaped ribs on the complex curvature stiffened wall panel. The auxiliary component 3 wraps around each support component 2 along the length direction of the Ω-shaped ribs and is used to fit and support the inner cavity of the Ω-shaped ribs.

[0051] In the above embodiments, such as Figure 2 As shown, the triangular filling structure 4 can be a prepreg structure or an adhesive layer structure such as a film. The skin 6 is an uncured prepreg layup. The skin 6 is located on the panel forming fixture 8. The Ω-shaped rib 7 is cured. The connector 1, support component 2 and auxiliary component 3 are placed in the inner cavity of the Ω-shaped rib 7. Then the Ω-shaped rib 7 is fixed to the skin 6 through the adhesive layer 5. The Ω-shaped rib 7 can contain multiple single features such as hypercurvature, single curvature, variable cross section, torsion, or a combination of various features.

[0052] Among them, such as Figure 3 As shown, the Ω-shaped rib 7 includes the rib cavity height W. SH 71. Top structure of the inner cavity of the rib; 72. Rounded corner of the cap of the inner cavity of the rib; 73. Waist of the inner cavity of the rib; 74. Width W of the middle part of the waist of the inner cavity of the rib. SS 75. The triangular area filling structure 4 includes a triangular area filling structure fillet 41, and the widest dimension W on both sides of the triangular area filling structure fillet. AS 42.

[0053] Multiple support components 2 are connected in series by connector 1. The support components 2 contact and are positioned and supported by the Ω-shaped ribs 7 through auxiliary components 3. This greatly reduces the manufacturing and operation difficulty, improves the manufacturing quality of parts, increases production efficiency and saves production costs. It is also suitable for manufacturing Ω-shaped stiffened wall panels with different complex configurations.

[0054] As an optional implementation, the upper width of the support component 2 is 20% to 60% of the height of the inner cavity of the rib, and the lower width is 20% to 60% of the height of the inner cavity of the rib.

[0055] Specifically, the support components can take various structural forms. The following detailed explanations are provided using the first support structure, the second support structure, and the third support structure as examples:

[0056] 1) First supporting structure (I-shaped structure)

[0057] Support component 2 comprises multiple sets of support structure a-type 21 (i.e., first support structure 21), which are connected by connector assembly a-configuration 11. The characteristic dimension of the support structure a-type 21 is the lower width L. TX 215 and the upper width L of the support structure a. TS 214.

[0058] Among them, the upper width L of the support structure of form a TS Dimension 214 is the height W of the inner cavity of the rib. SH 71 is between 20% and 60%; the lower width L of the support structure in form a TX Dimension 215 is the height W of the inner cavity of the rib. SH 71 is between 20% and 60%; the lower width L of the support structure in form a TX 215 Dimensions and Support Structure a Type Upper Width L TS 214 sizes can be the same or different.

[0059] See Figure 7As shown, support structure a type 21 includes an upper structure 211, a middle structure 212, a lower structure 213, an upper top surface 216, an upper fillet 217, a middle connecting feature 218, a lower fillet 219, a lower bottom surface 220, and a lower width W. TD 221. Support structure type a, height W TH 222. Support structure type a, with a central width W TZ 223.

[0060] The material of the support structure a type 21 can be a sandwich material with a soft surface and a hard interior; the top surface 216 of the support structure a type is in direct contact with the upper side surface 311 of the vacuum sealing layer, and the bottom surface 220 of the support structure a type is in direct contact with the lower side surface 313 of the vacuum sealing layer; the upper rounded corner 217 of the support structure a type is in coordination with the rounded corner 73 of the inner cavity cap of the rib; the lower rounded corner 219 of the support structure a type is in coordination with the rounded corner 41 of the triangular area filling structure, and it is necessary to coordinate the thickness of each material in the auxiliary material layer 3 inside the cavity and reserve a gap of less than 0.2mm.

[0061] The lower width of the support structure in form a is W. TD 221 is in direct contact with the lower side 313 of the vacuum sealing layer; the central connection feature 218 of the support structure a can be a straight line, a curve, or a combination of various continuous features; the height W of the support structure a is... TH 222 is the sum of twice the thickness of the isolation material layer 33, twice the thickness of the vacuum sealing layer 31, twice the thickness of the breathable material layer 32, and a gap of 0.5 mm to 1 mm, plus the height W of the rib cavity. SH The difference is 71; the width W in the middle of the support structure of form a. TZ 223 is smaller than the width W of the middle part of the inner cavity of the rib. SS 75.

[0062] For this type of support component, such as Figure 6 As shown, connector 1 comprises multiple connector combinations a configuration 11 connected in series; the length L of connector a configuration is... S 111.

[0063] 2) Second supporting structure (trumpet-shaped structure)

[0064] Support component 2 comprises multiple sets of support structures b-form 23 (i.e., second support structures 23), which are connected by connector assembly b-configuration 12; the characteristic dimension of support structure b-form 23 is the upper width L of support structure b-form. TS 234 and the lower width L of the support structure in form bTX 235.

[0065] Support structure b type, upper width L TS Dimension 234 is the height W of the inner cavity of the rib. SH 71 is between 20% and 60%; the lower width L of the support structure b is between 20% and 60%. TX Dimension 235 is the height W of the inner cavity of the rib. SH 71 is between 20% and 60%; the lower width L of the support structure b is between 20% and 60%. TX 235 Dimensions and Support Structure Type b Upper Width L TS The dimensions 2, 3, and 4 can be the same or different.

[0066] See Figure 9 As shown, support structure b type 23 includes support structure b type upper structure 231, support structure b type middle structure 232, support structure b type lower structure 233, support structure b type upper top surface 236, support structure b type upper fillet 237, support structure b type middle connection feature 238, support structure b type lower fillet 239, support structure b type lower bottom surface 240, and support structure b type lower width W. TD 243. Support structure type b, height W TH 242. Support structure type b, with a central width W TZ 243. Internal characteristics of support structure b type 244.

[0067] The material of the support structure type 23 can be a sandwich material with a soft surface and a hard interior; the top surface 236 of the support structure type 23 is in direct contact with the upper side surface 311 of the vacuum sealing layer, and the bottom surface 240 of the support structure type 23 is in direct contact with the lower side surface 313 of the vacuum sealing layer; the upper rounded corner 237 of the support structure type 23 is in coordination with the rounded corner 73 of the inner cavity cap of the rib; the lower rounded corner 239 of the support structure type 23 is in coordination with the rounded corner 41 of the triangular area filling structure, and the thickness of each material in the auxiliary material layer 3 inside the cavity needs to be coordinated, with a gap of less than 0.2mm reserved.

[0068] The lower width of the support structure in form b is W. TD 243 is in direct contact with the lower side 313 of the vacuum sealing layer; the central connection feature 238 of the support structure b can be a straight line, a curve, or a combination of various continuous features; the height W of the support structure b is... TH 242 is the sum of twice the thickness of the isolation material layer 33, twice the thickness of the vacuum sealing layer 31, twice the thickness of the breathable material layer 32, and a gap of 0.5 mm to 1 mm, plus the height W of the rib cavity. SH The difference is 71; the width W in the middle of the support structure of form b. TZ 243 is smaller than the width W of the middle part of the inner cavity of the rib.SS 75; Support structure b form internal characteristics 244 The interior can be straight lines, curves, irregular lines or combinations of various structures.

[0069] For this type of support component, such as Figure 8 As shown, connector 1 includes multiple parallel connector b configurations 12; the length L of connector b configuration is... S 121.

[0070] 3) Third supporting structure (split structure)

[0071] Support component 2 comprises multiple sets of support structures c-form 25 (i.e., the third support structure 25), which are connected by connectors combined in configuration c 13; the characteristic dimension of support structure c-form 25 is the upper width L of support structure c-form. TS 254 and the lower width L of the support structure in form c. TX 255.

[0072] Support structure, c-shaped, upper width L TS Dimension 253 is the height W of the inner cavity of the rib. SH 71 is between 20% and 60%; the lower width of the support structure is L in form c. TX Dimension 254 is the height W of the inner cavity of the rib. SH 71 is between 20% and 60%; further, the lower width L of the support structure in form c is further described. TX 254 Dimensions and Support Structure c-type Upper Width L TS The dimensions 253 can be the same or different.

[0073] See Figure 11 The support structure c-form 25 shown includes an upper structure 251, a lower structure 252, a top surface 255, a top fillet 256, a bottom fillet 257, a bottom surface 258, and a lower width W. TD 259, Support structure c-shaped height W TH 260.

[0074] The material of the support structure c-type 25 can be a sandwich material with a soft surface and a hard interior; the top surface 255 of the support structure c-type is in direct contact with the upper side surface 311 of the vacuum sealing layer, and the bottom surface 258 of the support structure c-type is in direct contact with the lower side surface 313 of the vacuum sealing layer; the upper rounded corner 257 of the support structure c-type has a matching and coordination relationship with the rounded corner 73 of the inner cavity cap of the rib; the lower rounded corner 257 of the support structure c-type has a matching relationship with the rounded corner 41 of the triangular area filling structure, which requires coordination of the thickness of each material in the auxiliary material layer 3 inside the cavity, and a gap of less than 0.2mm is reserved.

[0075] The lower width of the c-shaped support structure is W. TD 258 is in direct contact with the lower side 313 of the vacuum sealing layer; the support structure is of type c with a central width W. TZ 259 is smaller than the width W of the middle part of the inner cavity of the rib. SS 75; Support structure, type c, height W TH 260 is the sum of twice the thickness of the isolation material layer 33, twice the thickness of the vacuum sealing layer 31, twice the thickness of the breathable material layer 32, and a gap of 0.5mm to 1mm, plus the height W of the rib cavity. SH A difference of 71.

[0076] For this type of support component, such as Figure 10 As shown, connector 1 is a flexible annular connector c configuration 13, and the annular spacing dimension L of the annular connector c configuration 13 is... S 131.

[0077] As an optional implementation, the support component 2 is a sandwich material with a soft outer layer and a hard inner layer. This selection allows for flexible contact between the support component 2 and the inner cavity of the Ω-shaped rib 7, preventing damage to the Ω-shaped rib 7.

[0078] As an optional implementation method, such as Figure 4 As shown, the auxiliary component 3 includes a vacuum sealing layer 31, a breathable material layer 32, and an insulating material layer 33 wrapped around each support component 2 from the inside out.

[0079] Specifically, the auxiliary component 3 can be a combination of three materials: vacuum sealing layer 31, breathable material layer 32, and isolation material layer 33, or it can be a combination of two materials: vacuum sealing layer 31, breathable material layer 32, and isolation material layer 33.

[0080] See Figure 5As shown, the vacuum sealing layer 31 includes an upper side 311, a right side 312, a lower side 313, and a left side 314. The vacuum sealing layer 31 can be tubular or separated and then bonded. The reserved amount or overlapping connection material area of ​​the vacuum sealing layer 31 needs to be located on the right side 312 and the left side 314 of the vacuum sealing layer.

[0081] The breathable material layer 32 includes an upper side 321, a right side 324, a lower side 323, and a left side 324. The breathable material can be tubular and closed, or it can be overlapping and separated. The allowance or overlap area of ​​the breathable material layer 32 needs to be located on the right side 324 and the left side 324 of the breathable material layer.

[0082] The isolation material layer 33 includes an upper side 331, a right side 332, a lower side 333, and a left side 334; the isolation material layers can be tubular and closed, or they can be overlapping and separated.

[0083] This invention provides a bonding process utilizing the aforementioned auxiliary tooling for co-bonding complex curvature stiffened wall panels, comprising the following steps:

[0084] S100, as shown in Figure 12, multiple sets of support components 2 are connected by connector 1.

[0085] S200. Place the auxiliary component 3 on the combination of the connector 1 and the support assembly 2. Specifically, as shown in Figure 13, place the auxiliary component 3 on the combination of the connector 1 and the support assembly 2 in the order of vacuum sealing layer 31, breathable material layer 32, and isolation material layer 33 from the inside out.

[0086] S300. Flip the Ω-shaped rib 7 so that the adhesive side faces upward, and place the assembled connector 1, support assembly 2, and auxiliary component 3 into the inner cavity of the Ω-shaped rib 7. Specifically, as shown in Figure 13, flip the Ω-shaped rib 7 180° so that the adhesive side faces upward.

[0087] S400, as shown in Figure 15, place the triangular filling structure 4 into the triangular area of ​​the Ω-shaped rib 7 to make the bonding surface flat.

[0088] S500, as shown in Figure 16, lay the adhesive layer 5 on the bonding surface of the Ω-shaped rib 7.

[0089] S600, as shown in Figure 17, the adhesive surface of the Ω-shaped rib 7 is placed on the upper surface of the uncured skin 6 on the wall panel forming fixture 8, and external auxiliary materials are placed for sealing and curing.

[0090] It should be noted that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the figures. Furthermore, for the sake of brevity, detailed descriptions of known methods and techniques are omitted here.

[0091] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art without departing from the scope of the invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. An auxiliary tooling for bonding internal cavities of stiffened wall panels with complex curvature, characterized in that, It includes a connector (1), a support assembly (2) and an auxiliary component (3). The connector (1) sequentially connects each support assembly (2). Multiple support assemblies (2) are sequentially spaced along the length direction of the Ω-shaped ribs on the complex curvature stiffened wall panel. The auxiliary component (3) wraps around each support assembly (2) along the length direction of the Ω-shaped ribs and is used to fit and support the inner cavity of the Ω-shaped ribs. The auxiliary component (3) includes a vacuum sealing layer (31), a breathable material layer (32) and an insulating material layer (33) wrapped sequentially from the inside to the outside of each of the support components (2); The support component (2) includes multiple sets of support structure a-forms (21), each support structure a-form (21) comprising an upper structure (211), a middle structure (212), a lower structure (213), an upper top surface (216), an upper fillet (217), a middle connection feature (218), a lower fillet (219), and a lower bottom surface (210). 220); the top surface (216) of the support structure a is in direct contact with the upper side of the vacuum sealing layer (31), and the bottom surface (220) of the support structure a is in direct contact with the lower side of the vacuum sealing layer (31); the upper rounded corner (217) of the support structure a is in coordination with the rounded corner (73) of the inner cavity cap of the rib; the lower rounded corner (219) of the support structure a is in coordination with the rounded corner (41) of the triangular area filling structure, and a gap of less than 0.2mm is reserved.

2. The auxiliary tooling for co-bonding complex curvature stiffened wall panels according to claim 1, characterized in that, The connector (1) is linear or has an elastic spiral shape.

3. The auxiliary tooling for co-bonding complex curvature stiffened wall panels according to claim 1, characterized in that, The upper width of the support component (2) is 20% to 60% of the height of the inner cavity of the rib, and the lower width is 20% to 60% of the height of the inner cavity of the rib.

4. The auxiliary tooling for co-bonding complex curvature stiffened wall panels according to claim 1, characterized in that, The distance between two adjacent support components (2) is 2 to 10 times the height of the inner cavity of the rib.

5. The auxiliary tooling for co-bonding complex curvature stiffened wall panels according to any one of claims 1-4, characterized in that, The support component (2) is a sandwich material with a soft surface and a hard interior.

6. The auxiliary tooling for co-bonding complex curvature stiffened wall panels according to claim 1, characterized in that, The vacuum sealing layer (31) is a tubular sealing layer or a sealing layer that is separated and then re-bonded.

7. The auxiliary tooling for co-bonding complex curvature stiffened wall panels according to claim 1, characterized in that, The breathable material layer (32) is a tubular closed layer or a closed layer that can be overlapped and separated.

8. The auxiliary tooling for co-bonding complex curvature stiffened wall panels according to claim 1, characterized in that, The isolation material layer (33) is a tubular closed layer or a closed layer that can be overlapped and separated.

9. A bonding process utilizing an auxiliary tooling for the co-bonding of complex curvature stiffened wall panels as described in any one of claims 1-8, characterized in that, The process includes the following steps: Multiple sets of support components (2) are connected by connectors (1); Place the auxiliary component (3) on the combination of the connector (1) and the support assembly (2); Flip the Ω-shaped rib (7) so that the adhesive side is facing up, and put the assembled connector (1), the support assembly (2) and the auxiliary component (3) into the inner cavity of the Ω-shaped rib (7); Place the triangular filling structure (4) into the triangular area of ​​the Ω-shaped rib (7) to make the bonding surface flat; An adhesive layer (5) is laid on the bonding surface of the Ω-shaped rib (7); The adhesive surface of the Ω-shaped rib (7) is placed on the upper surface of the uncured skin (6) on the wall panel forming fixture (8), and external auxiliary materials are placed for sealing and curing.

Images