A three-dimensional air guide network structure of a reinforced wallboard and a construction method thereof

Abstract

The application discloses a kind of reinforced wallboard three-dimensional gas guide network structure and construction method, it is related to composite material zero (group) piece manufacturing technical field, including tool main body, pressure pad, protective layer, gas guide layer and isolation layer, first gas guide hole in a plurality of reinforced wallboard skin outer side is set in tool main body, second gas guide hole is set in pressure pad, isolation layer is set in the top of protective layer and pressure pad, gas guide layer is set in the top of isolation layer, gas guide layer forms upper gas guide passage, second gas guide hole can be communicated with first gas guide hole and form lower gas guide passage, and protective layer is overflow passage.The reinforced wallboard three-dimensional gas guide network structure of the application can quickly, sufficiently, timely discharge gas and small molecule by-product in curing process, resist extrusion effect of curing pressure, avoid local false vacuum, can reduce the closing effect of resin overflow to gas guide passage, fully discharge internal gas, improve product quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite component manufacturing, in particular to a stiffened panel three-dimensional gas guide network structure and a construction method. BACKGROUND

[0002] The stiffened panel has the advantages of high bearing efficiency and strong stability, and is widely used in skin structures.

[0003] The cross section of the stiffened panel is high and low, and the C-shaped semi-closed area is between the stringers. The existing packaging scheme mainly establishes a surrounding gas guide channel around the part, which has the problems of low gas guide efficiency and insufficient gas guide. The gas in the middle area of the stiffened panel is not discharged in time and not completely, which easily causes local gas retention to form a false vacuum, affecting the compaction effect and internal quality. Moreover, the vacuum bag exhaust and the small molecule by-product discharge in the curing process share a set of gas guide channels. Under the extrusion action of the curing pressure, the gas guide channel becomes narrow, and even partially closed. The small molecule by-products in the curing process cannot be discharged, forming a cavity inside the part and a concave or bulge on the surface of the part.

[0004] During the manufacturing process of the stiffened panel, uniform pressure transmission devices such as pressure pads are often used, which affect the gas guide effect of the covered area. Although holes are drilled on the pressure pad, it can compensate for the gas guide effect. However, during the curing process, the resin overflow will fill and close the gas guide hole, hindering the discharge of water vapor, small molecule by-products, etc., thereby forming pores inside. Moreover, it is easy to form a glue ridge on the surface of the part, affecting the surface flatness of the product. SUMMARY

[0005] The purpose of the present application is to provide a stiffened panel three-dimensional gas guide network structure and a construction method to solve the problems existing in the prior art, which can quickly, fully and timely discharge gas and small molecule by-products in the curing process, resist the extrusion action of the curing pressure, avoid local false vacuum, reduce the closing effect of resin overflow on the gas guide channel, fully discharge the internal gas, and improve the product quality.

[0006] To achieve the above purpose, the present application provides the following scheme:

[0007] The application provides a three-dimensional air guide network structure of a stiffened panel, which comprises a tool main body, pressure pads, a protective layer, an air guide layer and an isolation layer, the stiffened panel is arranged on the tool main body, a plurality of first air guide holes located on the outer side of the skin of the stiffened panel are formed in the tool main body, the pressure pads are located between adjacent stringers of the stiffened panel, and the pressure pads are arranged at positions of the skin of the stiffened panel which are not covered by the stringers, second air guide holes are formed in the pressure pads, the protective layer is located between the pressure pads and the skin, and the edges of the protective layer extend to the upper surfaces of the pressure pads respectively, the isolation layer is arranged above the protective layer and the pressure pads, the air guide layer is arranged above the isolation layer, the air guide layer forms an upper air guide channel, the second air guide holes can communicate with the first air guide holes to form a lower air guide channel, and the protective layer is an overflow channel.

[0008] Preferably, grooves are formed in the tool main body, and the plurality of first air guide holes are arranged in the grooves.

[0009] Preferably, the edges of the protective layer are in contact with the second air guide holes respectively.

[0010] Preferably, a support layer is arranged below the air guide layer, the two ends of the support layer in the width direction are located on the bottom edges of a stringer respectively, and the two ends of the support layer in the length direction protrude from the skin.

[0011] Preferably, the isolation layer is arranged between the air guide layer and the support layer, the two ends of the isolation layer in the width direction protrude from the two ends of the support layer in the length direction respectively, the two ends of the isolation layer in the width direction are located on the bottom edges of a stringer respectively, and the two ends of the isolation layer in the length direction protrude from the skin.

[0012] Preferably, the two ends of the air guide layer in the length direction protrude from the two ends of the support layer in the width direction respectively, and the two ends of the air guide layer in the width direction protrude from the skin.

[0013] Preferably, the air guide layer is made of fabric.

[0014] Preferably, the protective layer is made of nylon fiber.

[0015] Preferably, the isolation layer is a non-porous isolation film.

[0016] The application further provides a construction method of the three-dimensional air guide network structure of the stiffened panel, which comprises the following steps.

[0017] Step one, combining the stiffened panel on the tool main body;

[0018] Step two, laying the protective layer on the surface of the skin in the area without the stringer, and leaving a margin around the protective layer.

[0019] Step three, placing a pressure pad on the protective layer;

[0020] Step four, turning the excess of the protective layer around to the upper surface of the pressure pad, connecting with the second air guide hole of the pressure pad, and fixing;

[0021] Step five, laying a support layer on the pressure pad, the support layer is overlapped to the bottom edge of the adjacent stringer in the width direction, and the support layer protrudes from the skin in the length direction;

[0022] Step six, laying an isolation layer on the support layer, the isolation layer is overlapped to the bottom edge of the adjacent stringer in the width direction, and the isolation layer protrudes from the skin in the length direction;

[0023] Step seven, laying an air guide layer on the isolation layer;

[0024] Step eight, bagging, and curing.

[0025] The present application has the following technical effects relative to the prior art:

[0026] The present application constructs two relatively independent air guide networks in the vacuum bag through the isolation layer, the upper air guide channel is used for the close contact of the vacuum bag and the transmission of the curing pressure, the lower air guide channel connects the first air guide hole around the tool body and the second air guide hole above the skin, and is used for discharging water vapor and small molecule by-products, improving the air guide efficiency, avoiding false vacuum, and separately constructing an overflow channel for resin overflow, avoiding the closing effect of resin overflow on the air guide channel. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0028] Fig. 1 It is a schematic diagram of the three-dimensional air guide network structure of the stiffened wall panel of the present application;

[0029] Fig. 2 It is a sectional schematic diagram of the three-dimensional air guide network structure of the stiffened wall panel of the present application;

[0030] Fig. 3 It is a schematic diagram of the lower air guide channel of the present application;

[0031] Wherein: 100 - reinforced wallboard three-dimensional gas guide network structure, 1 - skin, 2 - stringer, 3 - protective layer, 4 - second gas guide hole, 5 - pressure pad, 6 - first gas guide hole, 7 - tool main body, 8 - gas guide layer, 9 - support layer, 10 - isolation layer. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described 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, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] The purpose of the present application is to provide a reinforced wallboard three-dimensional gas guide network structure and a construction method to solve the problems existing in the prior art, which can quickly, fully and timely discharge gas and small molecular by-products in the curing process, resist the extrusion effect of curing pressure, avoid local false vacuum, reduce the sealing effect of resin overflow on the gas guide channel, fully discharge internal gas and improve product quality.

[0034] In order to make the above-mentioned purposes, characteristics and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0035] Embodiment one

[0036] As Figs. 1-3As shown: the embodiment provides a three-dimensional gas guide network structure 100 of a stiffened panel, taking a composite T-stiffened panel as an example, the three-dimensional gas guide network structure 100 of the stiffened panel comprises a tool main body 7, a pressure pad 5, a protective layer 3, a gas guide layer 8 and an isolation layer 10, the stiffened panel is arranged on the tool main body 7, a plurality of first gas guide holes 6 located outside the skin 1 of the stiffened panel are formed on the tool main body 7, the pressure pad 5 is located between adjacent stringers 2 of the stiffened panel, and the position of the skin 1 of the stiffened panel which is not covered by the stringer 2 is provided with the pressure pad 5, the second gas guide hole 4 is formed on the pressure pad 5, the protective layer 3 is located between the pressure pad 5 and the skin 1, and the edges of the protective layer 3 respectively extend to the upper surface of the pressure pad 5, the isolation layer 10 is arranged above the protective layer 3 and the pressure pad 5, the isolation layer 10 plays a role of isolation, and is used for isolating resin and gas, the gas guide layer 8 is arranged above the isolation layer 10, the gas guide layer 8 forms an upper gas guide channel, the second gas guide hole 4 can be communicated with the first gas guide hole 6 to form a lower gas guide channel, the gas overflows upward through the second gas guide hole 4, and then diffuses to the surrounding through the protective layer 3 and the support layer 9. The protective layer 3 is an overflow channel, the resin is first absorbed by the protective layer 3, then flows outward and upward along the protective layer 3, and finally reaches the upper surface of the pressure pad 5. After the three-dimensional gas guide network structure 100 of the stiffened panel is placed in a vacuum bag, two relatively independent gas guide networks are constructed in the vacuum bag by the isolation layer 10 in the embodiment, the upper gas guide channel is used for discharging air, so that the vacuum bag is tightly attached to the part to transmit the curing pressure, the lower gas guide channel is communicated with the first gas guide hole 6 around the tool main body 7 and the second gas guide hole 4 above the skin 1, and is used for discharging water vapor and small molecule byproducts, improving the gas guide efficiency, avoiding false vacuum, and separately constructing an overflow channel for resin overflow, avoiding the closing effect of resin overflow on the gas guide channel, and avoiding local gas retention.

[0037] In the embodiment, grooves are formed on the tool main body 7, and the plurality of first gas guide holes 6 are arranged in the grooves.

[0038] In the embodiment, the second gas guide holes 4 are arranged in an array, and the edges of the protective layer 3 are respectively in contact with at least one column of second gas guide holes 4.

[0039] In the embodiment, the support layer 9 is arranged below the gas guide layer 8, and the isolation layer 10 is arranged between the gas guide layer 8 and the support layer 9. The two ends of the isolation layer 10 in the width direction respectively protrude from the two ends of the support layer 9 in the length direction, and the two ends of the isolation layer 10 in the width direction are respectively located on the bottom edges of one stringer 2. Specifically, the size of the overlap on the bottom edge of the stringer 2 is 1 / 2-5 / 6 of the width of the bottom edge of the stringer 2, and the two ends of the isolation layer 10 in the length direction respectively protrude from the skin 1 and are located above the corresponding first gas guide holes 6.

[0040] In the embodiment, the support layer 9 is located on the bottom edge of one stringer 2 at both ends in the width direction, specifically, the size of the overlap on the bottom edge of the stringer 2 is 1 / 5-2 / 5 of the width of the bottom edge of the stringer 2, the support layer 9 protrudes from the skin 1 at both ends in the length direction and is located above the corresponding first gas guide hole 6, the length of the support layer 9 is not greater than the length of the isolation layer 10, and the width of the support layer 9 is not greater than the width of the isolation layer 10.

[0041] In the embodiment, the gas guide layer 8 protrudes from the support layer 9 at both ends in the width direction, and protrudes from the skin 1 at both ends in the width direction and is located above the corresponding first gas guide hole 6, the length of the gas guide layer 8 is not greater than the length of the isolation layer 10, and the width of the gas guide layer 8 is not greater than the width of the isolation layer 10.

[0042] In the embodiment, the gas guide layer 8 is made of fabric; the protective layer 3 is made of nylon fiber, the protective layer 3 has the function of absorbing a certain amount of resin, and the protective layer 3 needs to be peeled off in the later stage, which can form a uniform and relatively rough surface on the surface of the part, facilitating the adhesion of paint during paint spraying; the isolation layer 10 is a non-porous isolation film made of polyethylene or polyvinyl chloride material; the support layer 9 needs to play the role of guiding gas, and the support layer 9 is a dry-state glass fiber fabric, which has the best gas guiding effect in a high-temperature and high-pressure environment, and has no obvious decrease compared with the normal temperature state, and the cost is very low.

[0043] The reinforced panel three-dimensional gas guide network structure 100 of the embodiment constructs a double-layer gas guide structure of an upper gas guide channel and a lower gas guide channel, the upper gas guide channel is mainly used for discharging gas in the vacuum bag to ensure that the vacuum bag film is tightly attached to the part, improve the pressure transmission effect, and the lower gas guide channel is used for discharging gas in the vacuum bag and small molecule by-products in the curing process at the same time, and improve the internal density; the support layer 9 is used to connect the first gas guide hole 6 and the second gas guide hole 4, forming a three-dimensional gas guide network, improving the gas guiding efficiency, effectively avoiding false vacuum, and being able to timely discharge small molecule by-products in the curing process, and improving the internal density; the protective layer 3 is used to guide the resin to overflow along the joint of the pressure pad 5, avoiding the accumulation of resin at the position of the second gas guide hole 4 of the pressure pad 5, forming a resin-rich area or glue ridge, affecting the surface quality, and resin blocking the gas guide hole, forming local gas retention; the reinforced panel, especially the gas in the central area of the large-size and complex-curvature reinforced panel, can be quickly and effectively discharged, avoiding false vacuum.

[0044] Embodiment two

[0045] The embodiment provides a construction method of the reinforced panel three-dimensional gas guide network structure 100 of embodiment one, including the following steps:

[0046] Step one, assembling the reinforced panel on the tool body 7;

[0047] Step two, lay the protective layer 3 on the surface of the skin 1 without the area of the long stringer 2, and leave a margin around the protective layer 3;

[0048] Step three, place the pressure pad 5 on the protective layer 3;

[0049] Step four, turn the margin around the protective layer 3 to the surface of the pressure pad 5, and connect with the second air guide hole 4 of the pressure pad 5, and fix it with the adhesive tape;

[0050] Step five, lay the support layer 9 on the pressure pad 5 along the axis direction of the long stringer 2, and the support layer 9 is overlapped to the bottom edge of the adjacent long stringer 2 in the width direction, and the overlapping width is 1 / 5-2 / 5 of the bottom edge width of the long stringer 2 at the overlapping position, and the support layer 9 protrudes from the skin 1 in the length direction and is above the corresponding first air guide hole 6;

[0051] Step six, lay the isolation layer 10 on the support layer 9, and the isolation layer 10 is overlapped to the bottom edge of the adjacent long stringer 2 in the width direction, and the overlapping width is 1 / 2-5 / 6 of the bottom edge width of the long stringer 2 at the overlapping position, and the isolation layer 10 protrudes from the skin 1 in the length direction and is above the corresponding first air guide hole 6;

[0052] Step seven, lay the air guide layer 8 on the isolation layer 10 along the axis direction of the long stringer 2;

[0053] Step eight, bagging and curing.

[0054] The principles and implementation manners of the present application are described in the specification by using specific examples, and the above examples are only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manners and application range will be changed. In conclusion, the content of the specification should not be understood as the limitation of the present application.

Claims

1. A three-dimensional air-conducting network structure of reinforced wall panels, characterized by: The utility model comprises a tooling body, a pressure pad, a protective layer, an air guide layer and an isolation layer, wherein the stiffened wall panel is arranged on the tooling body, and a plurality of first air guide holes are opened on the tooling body and located on the outside of the skin of the stiffened wall panel, the pressure pad is located between adjacent long stringers of the stiffened wall panel, and the pressure pad is provided at positions on the skin of the stiffened wall panel not covered by the long stringer, the pressure pad is provided with second air guide holes, the protective layer is located between the pressure pad and the skin, and the edges of the protective layer extend to the upper surface of the pressure pad respectively, the isolation layer is arranged above the protective layer and the pressure pad, the air guide layer is arranged above the isolation layer, the air guide layer forms an upper air guide channel, the second air guide holes can be connected with the first air guide holes to form a lower air guide channel, and the protective layer is an overflow channel; A support layer is provided below the air guide layer, with both ends of the support layer in the width direction respectively located on the bottom edge of a long stringer, and both ends of the support layer in the length direction respectively protruding from the skin; The isolation layer is arranged between the air guide layer and the support layer, with both ends of the isolation layer in the width direction protruding from both ends of the support layer in the length direction, and both ends of the isolation layer in the width direction are respectively located on the bottom edge of a long stringer, and both ends of the isolation layer in the length direction protrude from the skin; The two ends of the air guide layer in the length direction protrude from the two ends of the support layer in the width direction, and the two ends of the air guide layer in the width direction protrude from the skin; The air guide layer is made of fabric; The protective layer is made of nylon fiber; The isolation layer is a non-porous isolation film.

2. The three-dimensional air-guiding network structure of the reinforced wall panel according to claim 1 is characterized in that: A groove is formed on the tool body, and a plurality of the first air guide holes are arranged in the groove.

3. The three-dimensional air-guiding network structure of the reinforced wall panel according to claim 1 is characterized in that: Edges of the protective layer are in contact with the second air guide holes respectively.

4. A method for constructing a three-dimensional air-conducting network structure of a reinforced wall panel according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: Assemble the reinforced wall panels on the tooling body; Step 2: Lay a protective layer on the area on the upper surface of the skin where there is no long stringer, leaving a margin around the protective layer; Step 3: Place a pressure pad on the protective layer; Step 4: Flip the excess around the protective layer to the upper surface of the pressure pad, connect it to the second air guide hole of the pressure pad, and fix it; Step 5: Lay a support layer on the pressure pad, overlap the support layer to the bottom edge of the adjacent long stringer in the width direction, and protrude from the skin in the length direction; Step 6: Lay an isolation layer on the support layer, overlap the isolation layer to the bottom edge of the adjacent long stringer in the width direction, and protrude from the skin in the length direction; Step seven, laying the air guide layer on the isolation layer; Step eight: bag making and curing.

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