Co-curing forming tool for composite box-type structural member with I-shaped section
By designing a co-curing molding fixture for composite material box-shaped structural parts, and utilizing rectangular protrusions and a soft layer combined with AIRPAD soft film fixtures, the problems of complex structure and uneven pressure of traditional metal fixtures were solved, achieving a stable and uniform pressure effect, reducing production costs and improving the quality inspection pass rate.
Patent Information
- Application Number
- CN202422067525.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-08-26
AI Technical Summary
Traditional metal tooling has a complex structure and is difficult to manufacture, which increases production costs. Furthermore, uneven or ineffective pressurization can lead to delamination and porosity inside the composite material I-beam frame or ribs, resulting in substandard quality.
The composite box-shaped structural component co-curing molding tooling, which includes a first tooling, a second tooling and an AIRPAD soft membrane tooling, is used to ensure uniform pressure by utilizing the rectangular protrusions and soft layer design, combined with the AIRPAD soft membrane tooling.
The tooling structure was simplified, production costs were reduced, and a stable and uniform pressure effect was achieved during the curing process, avoiding internal delamination and porosity, and improving the pass rate of quality inspection.
Smart Images
Figure CN223671905U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a I -shaped section composite box type structural member co -curing forming frock especially, a I -shaped section composite box type structural member co -curing forming frock. BACKGROUND
[0002] I -shaped frame and I -shaped rib have the excellent characteristics of high structural efficiency, high rigidity and high connection efficiency, and are widely loved by composite material designers, and the composite material I -shaped frame and I -shaped rib are usually made of traditional metal frock.
[0003] However, the structure of the traditional metal frock is complex, the manufacturing difficulty is big, the production cost of the enterprise is increased, and in the curing process of the I -shaped frame or I -shaped rib made of composite material, the prefabricated material of the I -shaped frame or I -shaped rib is unevenly pressed or cannot be effectively pressed, thereby causing the internal layering, porosity of the I -shaped frame or I -shaped rib, and further causing the internal quality nondestructive testing of the I -shaped frame or I -shaped rib made of composite material to be unqualified. UTILITY MODEL CONTENTS
[0004] The purpose of the embodiment of the application is to provide a I -shaped section composite box type structural member co -curing forming frock, which is used to solve the technical problems that the production cost of the enterprise is increased due to the complex structure and the big manufacturing difficulty of the traditional metal frock, and the internal layering, porosity of the I -shaped frame or I -shaped rib, and further causing the internal quality nondestructive testing of the I -shaped frame or I -shaped rib made of composite material to be unqualified due to the uneven or ineffective pressing of the prefabricated material of the I -shaped frame or I -shaped rib by the traditional metal frock.
[0005] To achieve the above purpose, the technical scheme is as follows:
[0006] A I -shaped section composite box type structural member co -curing forming frock is used to make a I -shaped composite box type structural member, characterized by comprising a first frock, a second frock and two AIRPAD soft film frocks.
[0007] The middle position of the first frock is provided with a rectangular protrusion to form a male mold;
[0008] The second frock is located above the rectangular protrusion, one end of the second frock facing the rectangular protrusion is provided with a soft layer, and the width of the second frock is equal to the width of the rectangular protrusion.
[0009] The I-shaped composite box section structure is arranged between the rectangular protrusion and the soft layer, the lower web surface of the I-shaped composite box section structure is supported on the rectangular protrusion, and the soft layer is supported on the upper web surface of the I-shaped composite box section structure.
[0010] Two AIRPAD soft film tools are respectively attached to the outer surfaces of the two flanges of the I-shaped composite box section structure.
[0011] In the co-curing forming tool for the I-shaped cross-section composite box section structure provided in the embodiments of the present application, the first tool is made of metal.
[0012] In the co-curing forming tool for the I-shaped cross-section composite box section structure provided in the embodiments of the present application, the second tool is made of carbon fiber prepreg, and the profile of the second tool connected with the soft layer is consistent with the profile of the upper web surface of the I-shaped composite box section structure.
[0013] In the co-curing forming tool for the I-shaped cross-section composite box section structure provided in the embodiments of the present application, the soft layer is connected with the second tool through a glue film or a structural adhesive.
[0014] In the co-curing forming tool for the I-shaped cross-section composite box section structure provided in the embodiments of the present application, the soft layer is made of rubber or silicone.
[0015] In the co-curing forming tool for the I-shaped cross-section composite box section structure provided in the embodiments of the present application, the AIRPAD soft film tool includes a first carbon fiber prepreg layer, an AIRPAD rubber, and a second carbon fiber prepreg layer.
[0016] The first carbon fiber prepreg layer, the AIRPAD rubber, and the second carbon fiber prepreg layer are connected in sequence, and the first carbon fiber prepreg layer is attached to the outer surface of the flange of the I-shaped composite box section structure.
[0017] In the co-curing forming tool for the I-shaped cross-section composite box section structure provided in the embodiments of the present application, the end surface of the first carbon fiber prepreg layer away from the AIRPAD rubber is consistent with the profile of the outer surface of the flange of the I-shaped composite box section structure.
[0018] In the co-curing forming tool for the I-shaped cross-section composite box section structure provided in the embodiments of the present application, the first carbon fiber prepreg layer and the second carbon fiber prepreg layer are both made of high glass transition temperature carbon fiber prepreg.
[0019] The thickness of the first carbon fiber prepreg layer and the second carbon fiber prepreg layer is 0.4mm-0.6mm.
[0020] In the I-shaped cross-section composite box-shaped structural part co-curing forming tool, the first tool and the second tool are connected through a connecting structure, and the connecting structure comprises at least two first through holes, at least two second through holes, at least two positioning pins and at least two positioning bolts.
[0021] The at least two first through holes are arranged on the first tool.
[0022] The at least two second through holes are arranged on the second tool and the soft layer, the second through hole penetrates the second tool and the soft layer, and each second through hole is coaxially arranged with the first through hole.
[0023] Each positioning pin corresponds to the first through hole and the second through hole, one end of the positioning pin penetrates the second through hole and is located in the first through hole, and the end of the positioning pin away from the first through hole is provided with a positioning screw hole.
[0024] Each positioning bolt corresponds to the positioning pin, and the positioning bolt is threadedly connected with the positioning screw hole.
[0025] Compared with the prior art, the embodiments of the present application have the following beneficial effects:
[0026] According to the above technical solution, the I-shaped cross-section composite box-shaped structural part co-curing forming tool provided by the embodiments of the present application sets a rectangular protrusion on the first tool, sets the second tool above the rectangular protrusion, sets a soft layer on the side of the second tool facing the first tool, places the I-shaped composite box-shaped structural part between the rectangular protrusion and the soft layer, and respectively adheres two AIRPAD soft film tools to the outer surfaces of the two flanges of the I-shaped composite box-shaped structural part, so that the technical problem of increasing production cost of enterprises due to the complex structure and large manufacturing difficulty of the traditional metal tool in the prior art is solved, and the structure is simple. Through the soft layer and the AIRPAD soft film tool, the I-shaped composite box-shaped structural part can maintain stable and uniform pressing effect during the curing process of the I-shaped composite box-shaped structural part, and the technical problem of the internal layering, porosity and internal quality nondestructive testing of the I-shaped frame or the I-shaped rib made of composite material being unqualified due to the uneven or ineffective pressing of the traditional metal tool on the prefabricated material of the I-shaped frame or the I-shaped rib in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced. The drawings are not intended to be drawn in proportion, and in order to be clear, not every component will be marked in each drawing. The drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art. Among them:
[0028] Figure 1 The structural schematic diagram of the present application is shown in the following figure.
[0029] Figure 2 The structural schematic diagram of the present application is shown in the following figure. Figure 1 The partial enlarged schematic diagram of A in the figure is shown in the following figure.
[0030] Figure 3 The sectional view of the AIRPAD soft film tool of the present application is shown in the following figure.
[0031] Explanation of reference signs:
[0032] 10- I-shaped composite box-shaped structural member, 20- first tool, 21- rectangular protrusion, 22- first through hole, 30- second tool, 31- soft layer, 32- second through hole, 40- AIRPAD soft film tool, 41- first carbon fiber prepreg layer, 42- AIRPAD rubber, 43- second carbon fiber prepreg layer, 50- positioning pin, 51- positioning screw hole, 60- positioning bolt. DETAILED DESCRIPTION
[0033] At present, the I-shaped frame or I-shaped rib of composite material is usually made of traditional metal tool, and the traditional metal tool has complex structure and is difficult to make, which increases the production cost of enterprises, and in the curing process of the I-shaped frame or I-shaped rib of composite material made by the traditional metal tool, the preform of the I-shaped frame or I-shaped rib is prone to uneven pressure or ineffective pressure, resulting in delamination and porosity in the interior of the I-shaped frame or I-shaped rib, and further resulting in unqualified nondestructive testing of the internal quality of the I-shaped frame or I-shaped rib made of composite material.
[0034] In view of this, the embodiment of the present application provides a I-shaped cross-section composite box-shaped structural member co-curing forming tool, which comprises a first tool, a second tool and a soft layer, wherein the first tool is provided with a rectangular protrusion, the second tool is arranged above the rectangular protrusion, one side of the second tool facing the first tool is provided with the soft layer, the I-shaped composite box-shaped structural member is arranged between the rectangular protrusion and the soft layer, and two AIRPAD soft film tools are respectively attached to the outer surfaces of the two flanges of the I-shaped composite box-shaped structural member, so that the technical problem of increasing production cost of enterprises caused by the complex structure and large manufacturing difficulty of the traditional metal tool is solved, and the I-shaped composite box-shaped structural member can keep stable and uniform pressing effect during the curing process of the I-shaped composite box-shaped structural member, and the technical problem of causing the internal layering and porosity of the I-shaped frame or the I-shaped rib and further causing the internal quality of the I-shaped frame or the I-shaped rib made of composite material to be unqualified is solved.
[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative labor fall within the scope of protection of the present application.
[0036] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated by the orientations must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0038] In this application, unless otherwise expressly 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 being 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 being 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.
[0039] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0040] Example
[0041] This application provides a co-curing molding tooling for I-shaped cross-section composite material box-type structural parts, such as... Figures 1 to 3 As shown. A co-curing molding fixture for I-shaped cross-section composite material box-type structural components is used to manufacture I-shaped composite material structural components 10, including a first fixture 20, a second fixture 30, and two AIRPAD soft film fixtures 40.
[0042] The first tooling 20 has a rectangular protrusion 21 at the middle position in the width direction to form a male mold.
[0043] The first tool 20 is rectangular in projection on a horizontal plane, and is made of metal, preferably alloy steel or aluminum alloy.
[0044] The second tool 30 is located above the rectangular protrusion 21, and has a soft layer 31 at one end facing the rectangular protrusion 21, and the width of the second tool 30 is equal to the width of the rectangular protrusion 21.
[0045] Specifically, the second tool 30 is made of carbon fiber prepreg, and is formed by molding on a metal male mold. The profile of the second tool 30 connected with the soft layer 31 is consistent with the profile of the upper web surface of the I-shaped composite box structure 10. The soft layer 31 can be made of rubber or silicone. The soft layer 31 is connected with the second tool 30 by adhesive film or structural adhesive. When the soft layer 31 is bonded with the second tool 30 by adhesive film or structural adhesive, no air bubbles or hollows should be present between the soft layer 31 and the second tool 30.
[0046] The I-shaped composite box structure 10 is placed between the rectangular protrusion 21 and the soft layer 31. The lower web surface of the I-shaped composite box structure 10 is supported by the rectangular protrusion 21, and the soft layer 31 is supported by the upper web surface of the I-shaped composite box structure 10.
[0047] The width of the rectangular protrusion 21 is equal to or slightly smaller than the width of the web surface of the I-shaped composite box structure 10, and the width of the soft layer 31 is equal to or slightly smaller than the width of the web surface of the I-shaped composite box structure 10.
[0048] Two AIRPAD soft film tools 40 are respectively attached to the outer surfaces of the two flanges of the I-shaped composite box structure 10.
[0049] Specifically, in the embodiment, the AIRPAD soft film tooling 40 comprises a first carbon fiber prepreg layer 41, an AIRPAD rubber 42 and a second carbon fiber prepreg layer 43, which are sequentially connected, the first carbon fiber prepreg layer 41 is attached to the outer surface of the flange of the I-shaped composite box-type structural member 10, the end face of the first carbon fiber prepreg layer 41 away from the AIRPAD rubber conforms to the profile of the outer surface of the flange of the I-shaped composite box-type structural member 10, the material of the first carbon fiber prepreg layer 41 and the second carbon fiber prepreg layer 43 is high glass transition temperature carbon fiber prepreg, so as to ensure that the I-shaped composite box-type structural member 10 does not deform during curing, and the thickness of the first carbon fiber prepreg layer 41 and the second carbon fiber prepreg layer 43 is 0.4mm-0.6mm.
[0050] In the specific manufacturing process of the AIRPAD soft film tooling 40, 1-3 layers of carbon fiber prepreg are attached to the prosthesis with the same profile as the flange of the I-shaped composite box-type structural member to form the first carbon fiber prepreg layer 41, the AIRPAD rubber 42 is attached to one end of the first carbon fiber prepreg layer 41 away from the prosthesis, and 1-3 layers of carbon fiber prepreg are attached to one end of the AIRPAD rubber 42 away from the first carbon fiber prepreg layer 41 to form the second carbon fiber prepreg layer 43, the prosthesis, the first carbon fiber prepreg layer 41, the AIRPAD rubber 42 and the second carbon fiber prepreg layer 43 are placed together in a high-temperature and high-pressure autoclave for curing and forming, and the prosthesis is removed to form the AIRPAD soft film tooling 40.
[0051] The first tooling 20 and the second tooling 30 are connected by a connecting structure, the connecting structure comprises at least two first through holes 22, at least two second through holes 32, at least two positioning pins 50 and at least two positioning bolts 60, at least two first through holes 22 are arranged on the first tooling 20, at least two second through holes 32 are arranged on the second tooling 30 and the soft layer 31, the second through hole 32 penetrates the second tooling 30 and the soft layer 31, each second through hole 32 is coaxially arranged with a first through hole 22, each positioning pin 50 corresponds to a first through hole 22 and a second through hole 32, one end of the positioning pin 50 penetrates the second through hole 32 and is located in the first through hole 22, the end of the positioning pin 50 away from the first through hole 22 is provided with a positioning screw hole 51, the positioning screw hole 51 is provided with an internal thread, each positioning bolt 60 corresponds to a positioning pin 50, and the positioning bolt 60 is threadedly connected with the positioning screw hole 51.
[0052] In the embodiment, the first through holes 22 are four in number, and the four first through holes 22 are arranged in an array on the rectangular protrusion 21, the axial direction of the first through holes 22 is perpendicular to the bottom surface of the first tooling 20, and the first through holes 22 do not penetrate the first tooling 20. The number of the second through holes 32 is equal to the number of the first through holes 22, so the number of the second through holes 32 is also four. The four second through holes 32 are arranged in an array on the second tooling 30 and the soft layer 31. In use, the positioning pins 50 are inserted into the second through holes 32 and the first through holes 31, and the positioning bolts 60 are screwed into the positioning screw holes 51, so as to position and connect the first tooling 20 and the second tooling 30.
[0053] In summary, the I-shaped cross-section composite box-shaped structural member co-curing forming tooling provided by the embodiment of the present application has the following advantages: the rectangular protrusion is arranged on the first tooling, the second tooling is arranged above the rectangular protrusion, the side of the second tooling facing the first tooling is provided with a soft layer, the I-shaped composite box-shaped structural member is arranged between the rectangular protrusion and the soft layer, and two AIRPAD soft film toolings are respectively attached to the outer surfaces of the two flanges of the I-shaped composite box-shaped structural member. The structure is simple, and the technical problem of increasing production cost of enterprises caused by the complex structure and large manufacturing difficulty of the traditional metal tooling in the prior art is solved. The soft layer and the AIRPAD soft film tooling enable the I-shaped composite box-shaped structural member to maintain stable and uniform pressing effect during the curing process of the I-shaped composite box-shaped structural member, and the technical problem of causing delamination and porosity in the interior of the I-shaped frame or the I-shaped rib, and further causing unqualified nondestructive testing of the internal quality of the I-shaped frame or the I-shaped rib made of composite material caused by uneven pressing or ineffective pressing of the traditional metal tooling on the prefabricated material of the I-shaped frame or the I-shaped rib in the prior art is solved.
[0054] The I-shaped cross-section composite box-shaped structural member co-curing forming tooling provided by the embodiment of the present application is described in detail above, and the principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the technical solutions and core ideas of the present application. Those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A I-shaped cross-section composite box-type structural member co-curing molding tool for manufacturing a I-shaped cross-section composite box-type structural member, characterized by, The first tool, the second tool and two AIRPAD soft film tools are included; A rectangular protrusion is arranged at the middle position of the first tool to form a male mold; The second tool is located above the rectangular protrusion, and a soft layer is arranged at the end of the second tool facing the rectangular protrusion, the width of the second tool is equal to the width of the rectangular protrusion, the material of the second tool is carbon fiber prepreg, and the material of the soft layer is rubber or silicone; The I-shaped composite box-shaped structural member is arranged between the rectangular protrusion and the soft layer, the lower web surface of the I-shaped composite box-shaped structural member is supported on the rectangular protrusion, and the soft layer is supported on the upper web surface of the I-shaped composite box-shaped structural member, and the profile of the second tool connected with the soft layer is consistent with the profile of the upper web surface of the I-shaped composite box-shaped structural member; The two AIRPAD soft film tools are respectively attached to the outer surfaces of the two flanges of the I-shaped composite box-shaped structural member, the AIRPAD soft film tool includes a first carbon fiber prepreg layer, an AIRPAD rubber and a second carbon fiber prepreg layer, the first carbon fiber prepreg layer, the AIRPAD rubber and the second carbon fiber prepreg layer are connected in sequence, and the first carbon fiber prepreg layer is attached to the outer surface of the flange of the I-shaped composite box-shaped structural member, wherein the materials of the first carbon fiber prepreg layer and the second carbon fiber prepreg layer are high glass transition temperature carbon fiber prepregs.
2. A jig for co-curing a composite I-beam section box structural member as claimed in claim 1, wherein, The first tool is made of metal.
3. A jig for co-curing a composite I-beam section box structural member as claimed in claim 1, wherein, The soft layer is connected with the second tool through an adhesive film or a structural adhesive.
4. The I-beam cross-section composite box structural member co-curing molding tool according to claim 1, wherein, The end surface of the first carbon fiber prepreg layer away from the AIRPAD rubber is consistent with the profile of the outer surface of the flange of the I-shaped composite box-shaped structural member.
5. The I-beam cross-section composite box structural member coform molding tooling of claim 1, wherein, The thicknesses of the first carbon fiber prepreg layer and the second carbon fiber prepreg layer are both 0.4mm-0.6mm.
6. A jig for co-curing a composite I-beam section structural member as claimed in claim 1, wherein The first tool and the second tool are connected through a connecting structure, and the connecting structure includes at least two first through holes, at least two second through holes, at least two positioning pins and at least two positioning bolts; The at least two first through holes are arranged on the first tool; The at least two second through holes are arranged on the second tool and the soft layer, the second through hole penetrates the second tool and the soft layer, and each second through hole is coaxially arranged with a first through hole; Each positioning pin corresponds to a first through hole and a second through hole, one end of the positioning pin penetrates the second through hole and is located in the first through hole, and the end of the positioning pin away from the first through hole is provided with a positioning screw hole; Each positioning bolt corresponds to a positioning pin, and the positioning bolt is threadedly connected with the positioning screw hole.