Horizontal glue joint forming process method for front edge wave-absorbing component

Abstract

The invention discloses a horizontal glue joint forming process method for a front edge wave-absorbing component, solves the problems that a honeycomb cannot bear pressure in the L direction and the W direction and bears pressure in the T direction, and also solves the positioning problem of a middle functional layer. Comprising glue joint of the honeycomb core, the reflecting plate and the middle functional layer. According to the invention, the functional film can be accurately positioned during assembly and glue joint, and the situation that the product performance does not reach the standard due to inaccurate positioning in the operation process of workers is greatly reduced. It is guaranteed that the honeycomb core is not pressed in the L / W direction in the curing process, only the honeycomb is pressed in the T direction, and the lossless quality after the honeycomb and the functional film are glued is guaranteed; and the percent of pass and the overall delivery quality of products are greatly improved. The forming device is simple to operate and implement, convenient to operate, high in yield and suitable for forming aircraft wing leading edge components of different structures.

Description

Technical Field

[0001] The invention relates to the field of composite material manufacturing and processing, and in particular to a horizontal bonding molding process method for a leading edge wave absorbing component. Background Art

[0002] Composite materials optimize the combination of material components with different properties through advanced material preparation technology. They have the characteristics of high specific strength, high specific modulus, good fatigue resistance, strong fracture resistance, good corrosion resistance, light weight and simple processing. Their unique performance advantages have made composite materials widely used in the aviation field.

[0003] At present, the conventional manufacturing route of composite materials is to first manufacture sub-components through composite molding tooling. The method used for honeycomb bonding of functional structural parts is vertical bonding. During vertical bonding, the honeycomb cannot be subjected to pressure in the L and W directions, but needs to be limited in pressure in the T direction. This results in inaccurate positioning of the honeycomb and the middle functional layer, resulting in low product performance and qualified rate, and high scrap rate. Summary of the invention

[0004] The purpose of the present invention is to provide a horizontal bonding molding process method for leading edge absorbing components to solve the problems of inaccurate honeycomb positioning and inaccurate positioning of the middle functional layer during vertical bonding in the prior art, resulting in low product performance, low pass rate and high scrap rate.

[0005] To achieve the above object, the present invention provides the following technical solutions: The present invention provides a horizontal bonding molding process method for a leading edge absorbing component, including bonding of a honeycomb core, a reflector, and an intermediate functional layer, and the specific steps are as follows: S1: The reflective plate and the intermediate functional layer are formed on a male mold forming tooling. After the reflective plate is formed, demoulding is not performed. Positioning holes are drilled on the reflective plate mold body, and foam glue is laid on the reflective plate. S2: Lay the reflector mold body horizontally, use pins to position the reflector mold body, assemble the gluing tooling, place the processed honeycomb core to fit the reflector, put the functional layer and the adhesive film on the reflector, and after the functional layer and the reflector are overlapped in place, put the other half of the honeycomb; S3: Use positioning pins to assemble the honeycomb block of the bonding tooling, confirm that the three reference surfaces of the honeycomb core are flush with the plane of the tooling block, put on the equalizing plate, and bag and solidify to form.

[0006] Furthermore, after executing step S3, the method further includes: Remove the honeycomb block, install the reflector mold lifting frame, use the lifting tool to lift the mold from horizontal to vertical, transfer the mold to the machine for honeycomb core external surface processing, after the processing is completed, install the mold on the frame, insert the positioning pins and fastening screws, at this time the reflector mold is vertical, and the subsequent skin bonding is performed vertically Furthermore, in step S2, screws and positioning pins are used to fix the reflector assembly on the adhesive assembly frame, and the positioning pins are inserted to ensure that the reflector assembly is in place.

[0007] Furthermore, the inner profile of the honeycomb core matches the outer profile of the reflector, and the outer profile of the honeycomb core is a regular rectangular parallelepiped structure, so that the honeycomb is only compressed in the T direction during horizontal bonding.

[0008] Furthermore, after the reflective plate and the intermediate functional layer are formed on the male mold forming tool in the step S1, the step further includes: cutting the intermediate functional layer to a net size.

[0009] Furthermore, the positioning holes in step (1) are 4 positioning holes with a diameter of 8 mm.

[0010] Based on the above technical solution, the embodiments of the present invention can at least produce the following technical effects: (1) The horizontal bonding molding process method for the leading edge absorbing component provided by the present invention can accurately position the functional film during assembly and bonding, greatly reducing the possibility of inaccurate positioning during the operation of workers and resulting in substandard product performance.

[0011] (2) The horizontal bonding molding process method for the leading edge absorbing component provided by the present invention ensures that the honeycomb core is not compressed in the L / W direction during the curing process, but is compressed in the T direction, thereby ensuring the lossless quality of the honeycomb and the functional membrane after bonding; and greatly improving the product qualification rate and overall delivery quality.

[0012] (3) The horizontal bonding molding process for the leading edge absorbing component provided by the present invention is simple to implement, convenient to operate, and has a high pass rate. It can be applied to the molding of leading edge components of aircraft wings with different structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0014] Figure 1 The embodiment of the present invention is to install the processed honeycomb core and functional membrane; Figure 2 The embodiment of the present invention is to install a honeycomb block; Figure 3 The embodiment of the present invention is to install the upper part of the honeycomb core; Figure 4 The embodiment of the present invention is to install a honeycomb core stopper; Figure 5 This is a schematic diagram of a honeycomb after bonding according to an embodiment of the present invention; Figure 6 The embodiment of the present invention is to install the lifting frame rotating die; Figure 7 It is an embodiment of the present invention to transfer a part blank; Figure 8 This is the honeycomb exterior surface after processing according to the embodiment of the present invention. DETAILED DESCRIPTION

[0015] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0016] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0017] like Figure 1-8 As shown, the present invention provides a horizontal bonding molding process method for a leading edge absorbing component, specifically: (1) First, the inner surface of the honeycomb core is processed. The inner surface matches the outer surface of the reflector. The outer surface of the honeycomb core is a regular rectangular structure, which is convenient for horizontal bonding. The honeycomb is only compressed in the T direction. The reflector and the middle functional layer are formed on the male mold forming tooling. After forming, the reflector has a surplus and is not removed from the film. The foam glue is laid on the reflector. The middle functional layer is manually cut to the net size. After cutting, the adhesive film is laid on both sides; (2) Assemble the gluing tooling based on (1). After assembly, the reflector mold is in a horizontal position. Use screws and positioning pins to fix it on the tooling frame, and insert the positioning pins to ensure that the reflector tooling is assembled in place; The functional membrane can be accurately positioned during assembly and gluing, which greatly reduces the possibility of inaccurate positioning during worker operation and resulting in substandard product performance.

[0018] (3) On the basis of (2), place the honeycomb core on the bottom surface of the reflector, install a honeycomb core block, make sure that the reference surface of the honeycomb core is flush with the plane of the tooling block, lay the functional layer, at this time you can clearly observe whether the functional layer is in place, place the honeycomb core on the top surface, make sure that the reference surface of the honeycomb core is flush with the tooling block, install the other two honeycomb block tools, ensure that the three reference surfaces of the honeycomb and the block are flush, place the equalizing plate, and pack the bags for curing; During the curing process, the honeycomb core is not compressed in the L / W direction, but is compressed in the T direction, which ensures the lossless quality of the honeycomb and the functional membrane after bonding; greatly improves the product qualification rate and overall delivery quality.

[0019] (4) After curing and unpacking the bag based on (3), remove the honeycomb core pressure block, install the mold lifting frame, use the lifting tool to lift the mold from horizontal to vertical, and transfer the mold to the machining center for honeycomb core external surface processing. After the processing is completed, install the mold on the frame, insert the positioning pins and tighten the screws. At this time, the reflector mold is vertical, and the subsequent skin bonding is performed vertically.

[0020] The structures, functions and connection forms disclosed in this article can be implemented in other ways. For example, the embodiments described above are only exemplary, for example, multiple components can be combined or integrated into another component; in addition, each functional component in each embodiment of this article can be integrated into one functional component, or each functional component can exist physically separately, or two or more functional components can be integrated into one functional component.

[0021] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A horizontal bonding molding process for a leading edge absorbing component, characterized in that: Including the bonding of honeycomb core, reflector and intermediate functional layer, the specific steps are as follows: S1: the reflective plate and the intermediate functional layer are formed on a male mold forming tool, positioning holes are drilled on the reflective plate mold body, and foam glue is laid on the reflective plate; S2: Lay the reflector mold body horizontally, use pins to position the reflector mold body, assemble the gluing tooling, place the processed honeycomb core to fit the reflector, put the functional layer and the adhesive film on the reflector, and after the functional layer and the reflector are overlapped in place, put the other half of the honeycomb; S3: Use positioning pins to assemble the honeycomb block of the bonding tooling, confirm that the three reference surfaces of the honeycomb core are flush with the plane of the tooling block, put on the equalizing plate, and bag and solidify to form.

2. The horizontal bonding molding process for the leading edge absorbing component according to claim 1, characterized in that: After executing step S3, the method further includes: Remove the honeycomb block, install the reflector mold lifting frame, use the lifting tool to lift the mold from horizontal to vertical, transfer the mold to the machine for honeycomb core external surface processing, after the processing is completed, install the mold on the frame, insert the positioning pins and fastening screws, at this time the reflector mold is vertical, and the subsequent skin bonding is performed vertically.

3. The horizontal bonding molding process for the leading edge absorbing component according to claim 1, characterized in that: The inner profile of the honeycomb core matches the outer profile of the reflector plate, and the outer profile of the honeycomb core is a rectangular parallelepiped structure.

4. The horizontal bonding molding process for the leading edge absorbing component according to claim 1, characterized in that: After the reflective plate and the intermediate functional layer are formed on the male mold forming tool, the method further includes: cutting the intermediate functional layer to a net size.

5. The horizontal bonding molding process for the leading edge absorbing component according to claim 1, characterized in that: In the step S1, the positioning holes are 4 positioning holes with a diameter of 8 mm.

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