T-shaped wet stringer preforming and forming tool and stiffened wallboard device
By using segmented T-shaped wet stringer preforming and forming tooling, the problems of high cost and manufacturing difficulty of T-shaped stringer forming core molds have been solved, realizing low-cost and highly universal T-shaped wet stringer forming and improving production efficiency.
Patent Information
- Application Number
- CN202520307600.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-25
AI Technical Summary
Existing T-shaped stringer molding core molds are costly, difficult to manufacture, and difficult to maintain their shape on the skin curing fixture, resulting in low production efficiency.
The segmented T-shaped wet stringer preforming and forming fixtures are adopted, including a forming mold base, a stringer support base and a stringer forming core mold. The core mold is closed and opened through sliding and connecting parts, which can adapt to different size requirements and increase structural strength.
It reduces manufacturing difficulty and cost, improves the universality and structural strength of tooling, and can effectively form T-shaped wet stringers to meet different size requirements.
Smart Images
Figure CN223777872U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to T type reinforced wallboard frock technical field especially, it relates to a kind of T type wet stringer preforming and forming frock and reinforced wallboard device. BACKGROUND
[0002] Continuous fiber reinforced resin-based composite material is widely used in various military aircraft and civil aircraft due to its high specific strength, high specific stiffness, and other superior properties, among which, the skin stringer reinforced wallboard formed by hot press tank is a main structure form. The skin stringer reinforced wallboard is composed of T-shaped stringer and skin, and the current common co-bonding process is to bond the uncured T-shaped stringer and the cured skin together.
[0003] In actual production, different lengths of T-shaped stringer forming core molds are needed to produce T-shaped stringers of different lengths, which is costly and difficult to manufacture. Moreover, when the uncured T-shaped stringer is transferred to the cured skin for bonding, the T-shaped stringer forming core mold needs to be maintained on the skin curing tool to maintain its shape. However, the existing T-shaped stringer forming core mold is too long and the mold movement trajectory in the process is complex, so the T-shaped stringer forming core mold does not have enough structural strength to maintain its shape on the skin curing tool.
[0004] Therefore, it is urgent to provide a T-shaped wet stringer preforming and forming frock and reinforced wallboard device to solve the above problems. UTILITY MODEL CONTENTS
[0005] The first purpose of the utility model is to provide a T-shaped wet stringer preforming and forming frock, which has low manufacturing difficulty, low cost, high universality, and high structural strength.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] The T-shaped wet stringer preforming and forming frock comprises:
[0008] A forming mold base;
[0009] Two groups of stringer support seats are slidingly arranged on the forming mold base, and the two groups of stringer support seats are oppositely arranged and can slide towards or away from each other;
[0010] Two groups of long string forming cores are arranged on corresponding long string support seats, the long string forming core comprises a plurality of core segments and a core connecting piece, an L-shaped surface is arranged on the core segment, the plurality of core segments are sequentially connected, the plurality of L-shaped surfaces are spliced into an L-shaped long string surface, and the two adjacent core segments are connected through the core connecting piece, the two groups of L-shaped long string surfaces are arranged in opposite directions, and the two groups of L-shaped long string surfaces can form a T-shaped long string surface.
[0011] As an optional technical solution of the T-shaped wet long string preforming and forming tool, the mutual contact surface of the two adjacent core segments is a Z-shaped surface.
[0012] As an optional technical solution of the T-shaped wet long string preforming and forming tool, the core connecting piece spans the Z-shaped surface, and the two ends of the core connecting piece are respectively clamped on the inner side of the corresponding core segment.
[0013] As an optional technical solution of the T-shaped wet long string preforming and forming tool, bolts are sequentially arranged to connect the core connecting piece and the core segment.
[0014] As an optional technical solution of the T-shaped wet long string preforming and forming tool, the forming mold base comprises a chassis, the chassis is provided with a sliding rail, the extension direction of the sliding rail is perpendicular to the length direction of the long string forming core, and the two groups of long string support seats are arranged on the sliding rail in a sliding manner along the extension direction of the sliding rail.
[0015] As an optional technical solution of the T-shaped wet long string preforming and forming tool, the long string support seat comprises a support base and a core mounting seat, the support base is arranged on the sliding rail in a sliding manner, the core mounting seat is arranged on the support base, and the long string forming core is arranged on the corresponding core mounting seat.
[0016] As an optional technical solution of the T-shaped wet long string preforming and forming tool, the T-shaped wet long string preforming and forming tool further comprises an opening and closing assembly, the opening and closing assembly is fixed on the chassis, the driving end of the opening and closing assembly is connected with the support base, and the opening and closing assembly can drive the two groups of support bases to move close to or away from each other.
[0017] As an optional technical solution of the T-shaped wet long string preforming and forming tool, the opening and closing assembly comprises two driving members, and the two driving members are arranged on the outer sides of the two groups of long string support seats.
[0018] As an optional technical solution of the T-shaped wet stringer preforming and forming tool, the forming mold base further comprises two groups of glue joint locators on the base frame, the two groups of glue joint locators are located at both end positions of the stringer forming core mold in the length direction and are located between the two groups of stringer forming core molds.
[0019] The second object of the utility model is to provide a stiffened wall plate device, which has low manufacturing difficulty, low cost, high universality and high structural strength.
[0020] To achieve the object, the utility model adopts the following technical solutions.
[0021] The stiffened wall plate device comprises a skin forming tool and the above-mentioned T-shaped wet stringer preforming and forming tool, the skin forming tool is used for forming a wet skin, the T-shaped wet stringer preforming and forming tool is used for forming a T-shaped wet stringer, and the wet skin and the T-shaped wet stringer are cured and glued to form a stiffened wall plate.
[0022] The utility model has the advantages of:
[0023] The T-shaped wet stringer preforming and forming tool provided by the embodiment comprises a forming mold base, a stringer support base and a stringer forming core mold. The forming mold base supports the whole T-shaped wet stringer preforming and forming tool. The stringer support base is slidably arranged on the forming mold base, and the two groups of stringer support bases are oppositely arranged and can slide towards or away from each other. The stringer forming core mold is arranged on the corresponding stringer support base, and the stringer support base supports and fixes the stringer forming core mold. The two groups of stringer forming core molds can be driven by the corresponding stringer support bases to move towards or away from each other to realize mold closing or mold opening, so as to form a T-shaped wet stringer. The stringer forming core mold comprises a plurality of core mold segments and a core mold connecting piece. An L-shaped surface is arranged on the core mold segment. The plurality of core mold segments are sequentially connected, so that the plurality of L-shaped surfaces are spliced into an L-shaped stringer surface to form an L-shaped wet stringer. The two adjacent core mold segments are connected by the core mold connecting piece to increase the connection strength between the core mold segments. The two groups of L-shaped stringer surfaces of the two groups of stringer forming core molds are oppositely arranged, and the two groups of L-shaped stringer surfaces can form a T-shaped stringer surface, so as to form a T-shaped wet stringer. In the T-shaped wet stringer preforming and forming tool, the stringer forming core mold adopts a segmented structure, which has low manufacturing difficulty. The tool can be adapted to the process requirements of T-shaped wet stringers with different sizes, and has low cost and high universality. The plurality of core mold segments are further connected by the core mold connecting piece to increase the connection strength between the core mold segments, so as to increase the structural strength of the stringer forming core mold and facilitate the stringer forming core mold to maintain the shape on the skin forming tool. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 FIG. 1 is a structural schematic diagram of a T-shaped wet stringer preforming and forming tool provided by an embodiment of the utility model;
[0025] Figure 2 Figure 1 is a structural schematic diagram of a long string forming core mold in a T-shaped wet long string preforming and forming tooling provided by an embodiment of the present application;
[0026] Figure 3 Figure 2 is an enlarged view of a connection between two core mold sections in the long string forming core mold provided by an embodiment of the present application;
[0027] Figure 4 Figure 3 is a sectional view of a connection between a core mold section and a core mold connecting piece in the long string forming core mold provided by an embodiment of the present application;
[0028] Figure 5 Figure 4 is a partial assembly view of a long string support seat and a forming mold base in the T-shaped wet long string preforming and forming tooling provided by an embodiment of the present application;
[0029] Figure 6 Figure 5 is a structural schematic diagram of the forming mold base in the T-shaped wet long string preforming and forming tooling provided by an embodiment of the present application.
[0030] In the drawings:
[0031] 100, forming mold base; 110, base frame; 120, slide rail; 130, glue joint positioner; 200, long string support seat; 210, support base; 220, core mold mounting seat; 300, long string forming core mold; 310, core mold section; 320, core mold connecting piece; 400, opening and closing assembly. DETAILED DESCRIPTION
[0032] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, rather than all the structures.
[0033] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the 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 the 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" the 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.
[0035] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0036] This embodiment provides a T-shaped wet stringer preforming and forming fixture, which is easy to manufacture, has low cost, high versatility, and high structural strength.
[0037] Specifically, such as Figures 1 to 3 As shown, the T-shaped wet stringer preforming and forming fixture includes a forming mold base 100, a stringer support seat 200, and a stringer forming core mold 300. The stringer support seat 200 is slidably disposed on the forming mold base 100, and two sets of stringer support seats 200 are arranged opposite each other and can slide closer or further apart. The stringer forming core mold 300 is located on the corresponding stringer support seat 200. The stringer forming core mold 300 includes multiple core mold segments 310 and core mold connectors 320. For example, the number of core mold segments 310 can be two, three, five, or six segments. The core mold segments 310 are provided with L-shaped surfaces. Multiple core mold segments 310 are connected sequentially to form an L-shaped stringer surface, and adjacent core mold segments 310 are reinforcedly connected by core mold connectors 320. The two sets of L-shaped stringer surfaces of the stringer forming core mold 300 are arranged back to back, and the two sets of L-shaped stringer surfaces can form a T-shaped stringer surface.
[0038] Based on the above design, the forming mold base 100 supports the entire T-shaped wet stringer preforming and forming fixture; the stringer support seat 200 is slidably disposed on the forming mold base 100, and the two sets of stringer support seats 200 are arranged opposite each other and can slide closer or further apart. The stringer forming core mold 300 is located on the corresponding stringer support seat 200, and the stringer support seat 200 supports and fixes the stringer forming core mold 300; and the two sets of stringer forming core molds 300 can be driven by the corresponding stringer support seat 200 to move closer or further apart to achieve mold closing or mold opening, thereby forming the T-shaped wet stringer. The stringer forming mandrel 300 includes multiple mandrel segments 310 and mandrel connectors 320. Each mandrel segment 310 has an L-shaped surface. These segments are sequentially connected to form an L-shaped stringer surface, enabling the formation of an L-shaped wet stringer. Adjacent mandrel segments 310 are reinforced by the mandrel connectors 320, increasing the connection strength between them. The two sets of L-shaped stringer surfaces in the two sets of stringer forming mandrels 300 are arranged back-to-back, forming a T-shaped stringer surface, which in turn enables the formation of a T-shaped wet stringer. In this T-shaped wet stringer preforming and forming fixture, the stringer forming core mold 300 adopts a segmented structure, which is easy to manufacture; and it can adapt to the process requirements of different sizes of T-shaped wet stringers, with low cost and high versatility; the multi-segment core mold sections 310 are also reinforced by core mold connectors 320, which increases the connection strength between each core mold section 310, thereby increasing the structural strength of the stringer forming core mold 300 and making it easier for the stringer forming core mold 300 to maintain its shape on the skin forming fixture.
[0039] It should be noted that a universal interface is provided between two adjacent core mold sections 310, and the two core mold sections 310 are connected by abutting through the universal interface; the outer ends of the two core mold sections 310 located at both ends of the stringer forming core mold 300 are provided with positioning structures for connecting to the skin forming tooling.
[0040] Optionally, the contact surfaces of two adjacent core mold sections 310 are Z-shaped surfaces, which increases the contact area of the two core mold sections 310 and thus increases the connection strength of the two core mold sections 310.
[0041] Continue as Figure 3 As shown, the core mold connector 320 spans the Z-shaped surface. The two ends of the core mold connector 320 are respectively snapped into the inner side of the corresponding core mold section 310. The core mold connector 320 pulls the two core mold sections 310 together along the length direction of the core mold section 310 without occupying the space in the length direction of the core mold section 310, and the snap-fit installation is simple.
[0042] In this embodiment, as Figure 3 and Figure 4As shown, in order to increase the connection strength between the core mold connector 320 and the core mold section 310, bolts are sequentially inserted to connect the core mold connector 320 and the core mold section 310, that is, the core mold connector 320 restricts the displacement of the core mold section 310 along the thickness direction of the core mold section 310.
[0043] In this embodiment, the core mold connector 320 includes two locking strips, which are fastened and engaged with two adjacent core mold sections 310; bolts are inserted along the thickness direction of the core mold section 310 and the locking strips to connect the core mold section 310 and the locking strips.
[0044] Optionally, such as Figure 5 and Figure 6 As shown, the molding mold base 100 includes a base frame 110, on which a slide rail 120 is provided. The extension direction of the slide rail 120 is perpendicular to the length direction of the stringer molding core mold 300. Two sets of stringer support seats 200 are slidably arranged on the slide rail 120 at intervals along the extension direction of the slide rail 120. The slide rail 120 is simple to set and allows the stringer support seats 200 to move smoothly, facilitating the closing and opening of the stringer molding core mold 300.
[0045] In this embodiment, the base frame 110 is a frame structure, which is lightweight. The top of the base frame 110 is flat, and multiple positioning holes are provided on the flat surface. The multiple positioning holes are arranged along the length direction of the stringer forming core mold 300 for measurement and positioning during the installation of the stringer forming core mold 300. For example, six, seven, or nine positioning holes are provided on the edge of the flat surface of the base frame 110.
[0046] In this embodiment, there are multiple slide rails 120, which are arranged at intervals along the length of the stringer forming core mold 300. For example, there may be four, seven, or nine slide rails 120.
[0047] Furthermore, the stringer support 200 includes a support base 210 and a mandrel mounting base 220. The support base 210 is made of rigid material and is designed to reduce weight while ensuring strength. The support base 210 is slidably mounted on the slide rail 120, and the mandrel mounting base 220 is located on the support base 210. The stringer forming mandrel 300 is located on the corresponding mandrel mounting base 220. The support base 210 is used to fix it to the base frame 110, and the mandrel mounting base 220 is used to install the stringer forming mandrel 300, making the installation of the stringer forming mandrel 300 simple.
[0048] It should be noted that the support base 210 is provided with a connection interface for the base frame 110 and the core mold mounting base 220. In this embodiment, the core mold mounting base 220 is fixed to the support base 210 using screws and pins. The core mold mounting base 220 is provided with a fixing structure for connecting to the stringer forming core mold 300. The fixing method can be screw connection, clamp, magnetic attraction, vacuum adsorption, etc. The core mold mounting base 220 is also provided with a positioning structure for connecting to the stringer forming core mold 300. For example, it can be a surface or a hole.
[0049] Furthermore, the T-shaped wet stringer preforming and forming fixture also includes an opening and closing assembly 400, which is fixed on the base frame 110. The driving end of the opening and closing assembly 400 is connected to the support base 210. The opening and closing assembly 400 can drive the two sets of support bases 210 to move closer or further apart, which facilitates the closing and opening of the stringer forming core mold 300.
[0050] The T-shaped wet stringer preforming and forming fixture also includes preforming guard plates, installed around the entire fixture to prevent bag bursting during the bagging process. Specifically, the opening and closing assembly 400 is provided with an installation interface for connecting to the preforming guard plates. Depending on the part forming process, the preforming guard plates can be sloping or flat structures, etc. In this embodiment, the opening and closing assembly 400 includes two drive components located outside the two sets of stringer support seats 200. The drive components can be devices such as lead screws with reducers.
[0051] Optionally, continue as follows Figure 6 As shown, the molding mold base 100 also includes two sets of adhesive bonding positioners 130 located on the base frame 110 to achieve adhesive bonding between the T-shaped wet stringer and the wet skin. The two sets of adhesive bonding positioners 130 are located at both ends of the stringer molding core mold 300 along its length and between the two sets of stringer molding core molds 300, thus avoiding interference when the two sets of stringer molding core molds 300 are closed.
[0052] Using this T-shaped wet stringer preforming and forming fixture, taking the T-shaped wet stringer hand-laid preforming + forming process as an example, the specific implementation method is as follows:
[0053] Using the opening and closing component 400, the left and right sets of stringer forming core molds 300 are opened away from each other to the laying position, and the L-shaped preform is laid to form the L-shaped stringer. During the process, the bag is put in and compacted.
[0054] After the L-shaped preforms on both sides are laid, the opening and closing component 400 is used again to close the two sets of stringer forming core molds 300 on the left and right sides and press them together to form a T-shaped wet stringer.
[0055] Rotate the entire tooling 180 degrees, and the formed T-shaped wet stringer will be at the bottom.
[0056] The T-shaped wet stringer is positioned in the designated location using the adhesive positioning device 130 and the skin forming fixture.
[0057] Disconnect the stringer forming core mold 300 from the core mold mounting base 220, use the opening and closing assembly 400 to open the stringer support base 200, and lower the stringer forming core mold 300.
[0058] Remove the molding base 100, leaving the stringer molding core mold 300, and proceed with the subsequent curing work.
[0059] This embodiment also provides a reinforced wall panel device, which is easy to manufacture, has low cost, high versatility, and high structural strength.
[0060] The reinforced wall panel device includes a skin forming fixture and the aforementioned T-shaped wet stringer preforming and forming fixture. The skin forming fixture is used to form the wet skin, and the T-shaped wet stringer preforming and forming fixture is used to form the T-shaped wet stringer. The wet skin and the T-shaped wet stringer are cured and bonded to form the reinforced wall panel.
[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. 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 this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A T-shaped wet stringer preforming and forming fixture, characterized in that, include: Molding mold base (100); Two sets of stringer support seats (200) are slidably disposed on the molding mold base (100). The two sets of stringer support seats (200) are arranged opposite to each other and can slide closer or further apart. Two sets of stringer forming core molds (300) are located on the corresponding stringer support base (200). Each stringer forming core mold (300) includes multiple core mold sections (310) and core mold connectors (320). Each core mold section (310) has an L-shaped surface. Multiple core mold sections (310) are connected in sequence to form an L-shaped stringer surface. Adjacent core mold sections (310) are reinforced by the core mold connectors (320). The two sets of L-shaped stringer surfaces of the two sets of stringer forming core molds (300) are arranged back to back, and the two sets of L-shaped stringer surfaces can form a T-shaped stringer surface.
2. The T-shaped wet stringer preforming and forming fixture according to claim 1, characterized in that, The contact surfaces of two adjacent core mold sections (310) are Z-shaped.
3. The T-shaped wet stringer preforming and forming fixture according to claim 2, characterized in that, The core mold connector (320) spans the Z-shaped surface, and the two ends of the core mold connector (320) are respectively engaged inside the corresponding ends of the core mold section (310).
4. The T-shaped wet stringer preforming and forming fixture according to claim 1, characterized in that, Bolts are sequentially inserted to connect the core mold connector (320) and the core mold section (310).
5. The T-shaped wet stringer preforming and forming fixture according to claim 1, characterized in that, The molding mold base (100) includes a base frame (110), and a slide rail (120) is provided on the base frame (110). The extension direction of the slide rail (120) is perpendicular to the length direction of the stringer molding core mold (300). Two sets of stringer support seats (200) are slidably arranged on the slide rail (120) at intervals along the extension direction of the slide rail (120).
6. The T-shaped wet stringer preforming and forming fixture according to claim 5, characterized in that, The stringer support base (200) includes a support base (210) and a core mold mounting base (220). The support base (210) is slidably disposed on the slide rail (120). The core mold mounting base (220) is located on the support base (210). The stringer forming core mold (300) is located on the corresponding core mold mounting base (220).
7. The T-shaped wet stringer preforming and forming fixture according to claim 6, characterized in that, The T-shaped wet stringer preforming and forming fixture also includes an opening and closing assembly (400), which is fixed on the base frame (110). The driving end of the opening and closing assembly (400) is connected to the support base (210), and the opening and closing assembly (400) can drive the two sets of support bases (210) to move closer or further apart.
8. The T-shaped wet stringer preforming and forming fixture according to claim 7, characterized in that, The opening and closing assembly (400) includes two drive members located outside the two sets of stringer support seats (200).
9. The T-shaped wet stringer preforming and forming fixture according to claim 5, characterized in that, The molding mold base (100) also includes two sets of adhesive positioning devices (130) located on the base frame (110). The two sets of adhesive positioning devices (130) are located at both ends of the stringer molding core mold (300) along its length and between the two sets of stringer molding core molds (300).
10. A reinforced wall panel device, characterized in that, The invention includes a skin forming fixture and a T-shaped wet stringer preforming and forming fixture as described in any one of claims 1-9, wherein the skin forming fixture is used to form a wet skin, the T-shaped wet stringer preforming and forming fixture is used to form a T-shaped wet stringer, and the wet skin and the T-shaped wet stringer are cured and bonded together to form a stiffened wall panel.