Fiber placement quality detection device

Abstract

The utility model belongs to the technical field of cap-shaped wallboard skin manufacturing, and discloses a fiber placement quality detection device. The fiber placement quality detection device comprises a cap-shaped stringer, a tubular vacuum bag, a skin wallboard and a vacuum assembly. The cap-shaped stringer is of an n-shaped structure, and the n-shaped structure is provided with a groove. The tubular vacuum bag is arranged in the groove in an attached mode, and a supporting core mold is arranged in a cavity of the tubular vacuum bag. The skin wall plate is laid on the cap-shaped stringer and located on the opening side of the groove. The vacuum assembly comprises a vacuum pipe, a valve and a vacuum meter, the vacuum pipe is communicated with the tubular vacuum bag, the valve is installed on the vacuum pipe, and the vacuum meter is arranged at the end, away from the tubular vacuum bag, of the vacuum pipe. According to the fiber placement quality detection device, the vacuum meter can continuously detect the negative pressure in the tubular vacuum bag, the problem that rechecking is needed due to local air leakage of the tubular vacuum bag is avoided, and the laying work efficiency is improved; when the vacuum meter detects that airtight leakage occurs in the tubular vacuum bag, the tubular vacuum bag can be vacuumized in time.

Description

Technical Field

[0001] This utility model relates to the field of hat-shaped panel skin manufacturing technology, and in particular to a wire laying quality detection device. Background Technology

[0002] The fabrication of large cap-shaped panel skins for co-curing types generally involves first placing pre-laid, hot-pressed, pre-formed cap-shaped stringers on a fixture for assembling the composite material for the inner wall of the fuselage. Next, tubular vacuum bags with air bladders are placed as supports according to the part design requirements. After hoisting the fixture onto the equipment, the skin fabrication process begins. During this process, the tubular vacuum bags need to be pre-vacuumed by using negative pressure to tighten them and then sealing both ends.

[0003] During the automatic fiber placement process, airtight leaks sometimes occur in the tubular vacuum bag of this type of cap-shaped panel. When this happens, as the tubular vacuum bag gradually transitions from a negative pressure state to a normal pressure state, it can easily cause localized bulging of the surface of the cap-shaped stringer composite material on the inner wall of the machine body. This results in insufficient adhesion between the inner wall composite material and the cap-shaped stringer composite material parts, thus affecting the forming quality of the part surface.

[0004] Therefore, there is an urgent need for a device for detecting the quality of yarn laying to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a wire-laying quality inspection device, which aims to solve the problem that when the existing tubular vacuum bag has an airtight leak, the surface of the cap-shaped stringer will locally bulge, resulting in insufficient adhesion between the composite material of the inner wall of the machine body and the cap-shaped stringer, thus affecting the molding quality of the parts. This wire-laying quality inspection device can continuously detect the negative pressure inside the tubular vacuum bag and can promptly perform vacuuming treatment on the tubular vacuum bag. Under the continuous vacuum tightening state, the tubular vacuum bag is tightly attached to the supporting core mold, reducing local bulging caused by the overall airbag being too soft, and effectively improving the surface quality of the first layer of the skin panel.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A wire laying quality inspection device, comprising:

[0008] The hat-shaped stringer is configured as a U-shaped structure, and the U-shaped structure has a groove;

[0009] A tubular vacuum bag is fitted into the groove, and a supporting core mold is provided inside the cavity of the tubular vacuum bag;

[0010] The skin panel is laid on the cap-shaped stringer and located on the opening side of the groove;

[0011] A vacuum assembly includes a vacuum tube, a valve, and a vacuum gauge. The vacuum tube is connected to the tubular vacuum bag, the valve is mounted on the vacuum tube, and the vacuum gauge is located at the end of the vacuum tube away from the tubular vacuum bag.

[0012] In some possible implementations, a plurality of the cap-shaped stringers, the tubular vacuum bags, the vacuum tubes, and the valves are provided, with a plurality of cap-shaped stringers and a plurality of tubular vacuum bags arranged in a one-to-one correspondence, a plurality of vacuum tubes and a plurality of tubular vacuum bags arranged in a one-to-one correspondence, and a plurality of valves and a plurality of vacuum tubes arranged in a one-to-one correspondence.

[0013] In some possible implementations, the end of the vacuum tube furthest from the tubular vacuum bag is connected to the vacuum gauge via a connector.

[0014] In some possible implementations, two of the vacuum tubes form a group, and the connecting joint is a tee joint, through which the two vacuum tubes are connected to the vacuum gauge.

[0015] In some possible implementations, the three vacuum tubes form a group, and the connecting joint is a four-way connector, through which the three vacuum tubes are connected to the vacuum gauge.

[0016] In some possible implementations, the vacuum tube includes an interconnected rigid tube and a flexible tube, the rigid tube being connected to the tubular vacuum bag and the flexible tube being connected to the connector.

[0017] In some possible implementations, the connector is connected to the vacuum gauge via a vacuum conduit.

[0018] In some possible implementations, the vacuum manifold includes a plurality of branch pipes and a vacuum manifold, the number of branch pipes and the number of connecting joints being the same, one end of each branch pipe being connected to the connecting joint, the other end of each branch pipe being connected to the vacuum manifold, and the vacuum manifold being connected to the vacuum gauge.

[0019] In some possible implementations, the diameter of the vacuum tube is smaller than the diameter of the branch tube, and the diameter of the branch tube is equal to the diameter of the main vacuum tube.

[0020] In some possible implementations, the vacuum tube and the tubular vacuum bag are sealed together by a sealing strip.

[0021] The beneficial effects of this utility model are as follows: The wire laying quality detection device provided by this utility model, by setting up a vacuum component, connects one end of the vacuum tube to the tubular vacuum bag, and sets a vacuum gauge at the end of the vacuum tube away from the tubular vacuum bag. The vacuum gauge can continuously detect the negative pressure inside the tubular vacuum bag, avoiding the problem of having to re-inspect due to local air leakage in the tubular vacuum bag, thus improving the efficiency of the laying work. When the vacuum gauge detects an airtight leak in the tubular vacuum bag, the vacuum tube can be connected to an external vacuum pumping device to promptly vacuum the tubular vacuum bag. Under the continuous vacuum tightening state, the tubular vacuum bag is tightly attached to the supporting core mold, reducing local bulging caused by the overall airbag being too soft, and effectively improving the surface quality of the first layer of the skin panel. Attached Figure Description

[0022] Figure 1 This is a three-dimensional view of the filament laying quality detection device provided in this embodiment of the utility model;

[0023] Figure 2 This is an assembly diagram of the valve and four-way connector provided in this embodiment of the utility model;

[0024] Figure 3 This is an assembly diagram of the cap-shaped stringer, valve, and four-way connector provided in this embodiment of the utility model;

[0025] Figure 4 This is a cross-sectional view of the assembled hat-shaped stringer, tubular vacuum bag, supporting core mold, and skin panel provided in this embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the vacuum tube provided in this embodiment of the utility model.

[0027] In the picture:

[0028] 100. Hat-shaped stringer; 200. Tubular vacuum bag; 300. Support core mold; 400. Skin panel; 510. Vacuum tube; 511. Rigid connecting pipe; 512. Flexible connecting pipe; 520. Valve; 530. Four-way connector; 540. Vacuum manifold; 541. Branch pipe; 542. Vacuum main pipe. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] 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.

[0032] 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.

[0033] This embodiment provides a wire-laying quality inspection device, which aims to solve the problem that when existing tubular vacuum bags experience airtight leakage, the surface of the cap-shaped stringer locally bulges, resulting in insufficient adhesion between the composite material of the inner wall of the machine body and the cap-shaped stringer, affecting the molding quality of the parts. This wire-laying quality inspection device can continuously detect the negative pressure inside the tubular vacuum bag and can promptly perform vacuuming treatment on the tubular vacuum bag. Under continuous vacuum tightening, the tubular vacuum bag is tightly attached to the supporting core mold, reducing local bulging caused by the overall airbag being too soft, and effectively improving the surface quality of the first layer of skin panel laying.

[0034] like Figures 1 to 5As shown, the yarn laying quality inspection device includes a cap-shaped stringer 100, a tubular vacuum bag 200, a skin panel 400, and a vacuum assembly. The cap-shaped stringer 100 is configured with a U-shaped structure, and the U-shaped structure has a groove; the tubular vacuum bag 200 is fitted into the groove, and a supporting mandrel 300 is provided in the cavity of the tubular vacuum bag 200; the skin panel 400 is laid on the cap-shaped stringer 100 and located on the opening side of the groove; the vacuum assembly includes a vacuum tube 510, a valve 520, and a vacuum gauge. The vacuum tube 510 is connected to the tubular vacuum bag 200, the valve 520 is installed on the vacuum tube 510, and a vacuum gauge is provided at the end of the vacuum tube 510 away from the tubular vacuum bag 200.

[0035] The aforementioned wire-laying quality inspection device, by setting up a vacuum component, connects one end of the vacuum tube 510 to the tubular vacuum bag 200, and a vacuum gauge is installed at the end of the vacuum tube 510 away from the tubular vacuum bag 200. The vacuum gauge can continuously detect the negative pressure inside the tubular vacuum bag 200, avoiding the problem of having to re-inspect due to local air leakage in the tubular vacuum bag 200, thus improving the efficiency of the laying work. When the vacuum gauge detects an airtight leak in the tubular vacuum bag 200, the vacuum tube 510 can be connected to an external vacuum pump to promptly vacuum the tubular vacuum bag 200. Under continuous vacuum tightening, the tubular vacuum bag 200 is tightly attached to the support core mold 300, reducing local bulging caused by the overall airbag being too soft, and effectively improving the surface quality of the first layer of the skin panel 400.

[0036] In this embodiment, a plurality of cap-shaped stringers 100, tubular vacuum bags 200, vacuum tubes 510, and valves 520 are provided. A plurality of cap-shaped stringers 100 and a plurality of tubular vacuum bags 200 are arranged in a one-to-one correspondence, as are a plurality of tubular vacuum bags 200 and a plurality of vacuum tubes 510, and a plurality of vacuum tubes 510 and a plurality of valves 520. The vacuum tubes 510, valves 520, and tubular vacuum bags 200 are arranged in a one-to-one correspondence. When a tubular vacuum bag 200 experiences an airtight leak, the valve 520 can be used for individual leak detection. The corresponding vacuum tube 510 can be used to promptly evacuate the tubular vacuum bag 200, preventing localized bulging caused by excessive softness of the overall airbag. The specific number of cap-shaped stringers 100, tubular vacuum bags 200, vacuum tubes 510, and valves 520 can be set as needed.

[0037] Optionally, the end of the vacuum tube 510 furthest from the tubular vacuum bag 200 is connected to a vacuum gauge via a connector. For example, two vacuum tubes 510 form a group, with a tee connector, and the two vacuum tubes 510 are connected to the vacuum gauge through the tee connector. Alternatively, three vacuum tubes 510 form a group, with a four-way connector 530, and the three vacuum tubes 510 are connected to the vacuum gauge through the four-way connector 530. Connecting two or three vacuum tubes 510 to one vacuum gauge reduces the overall volume of the vacuum tubes 510, avoids interference between the vacuum tubes 510 when the entire wire laying quality inspection device rotates, and allows for regional vacuum demand management. In the event of an airtight leak in the tubular vacuum bag 200, the leaking area can be quickly identified and airtightened, improving laying efficiency and reducing labor costs associated with vacuum leak inspection.

[0038] In this embodiment, the vacuum tube 510 includes a rigid tube 511 and a flexible tube 512 connected to each other. The rigid tube 511 is connected to the tubular vacuum bag 200, and the flexible tube 512 is connected to the connecting connector. When the connecting connector is a tee or a four-way connector 530, the vacuum tube 510 will deform when connected to the connecting connector. By providing the flexible tube 512, it is easier to connect to the connecting connector, thus improving the connection flexibility.

[0039] Preferably, the connector and the vacuum gauge are connected via a vacuum manifold 540. Specifically, the vacuum manifold 540 includes several branch pipes 541 and a main vacuum pipe 542. The number of branch pipes 541 is the same as the number of connectors. One end of each branch pipe 541 is connected to a connector, and the other end is connected to the main vacuum pipe 542, which is connected to the vacuum gauge. All branch pipes 541 are managed and converged into a single main vacuum pipe 542 in parallel. A single vacuum source can maintain the negative pressure of all tubular vacuum bags 200, avoiding the problem of overall negative pressure drop caused by insufficient local vacuum sealing. For example, see [link to example]. Figure 1 Five branch pipes 541 can be combined into a group, and a group of branch pipes 541 can be connected to the vacuum main pipe 542 through a five-way connector. In other embodiments, three or four branch pipes 541 can also be combined into a group and connected to the vacuum main pipe 542 through a three-way or four-way connector, which can be set as needed.

[0040] Optionally, the diameter of the vacuum tube 510 is smaller than the diameter of the branch tube 541, and the diameter of the branch tube 541 is equal to the diameter of the main vacuum tube 542. Setting the diameter of the vacuum tube 510 to be smaller than the diameter of the branch tube 541 can reduce the area occupied by the vacuum tube 510 and avoid the overall structure occupying a large area due to the excessive size of the vacuum tube 510.

[0041] Optionally, the vacuum tube 510 and the tubular vacuum bag 200 are sealed together by a sealing strip. The sealing strip serves to provide waterproofing, sealing, and fixation, and is low in manufacturing cost. Optionally, a gas-guiding material can be placed inside the sealing strip for gas conduction.

[0042] The process of using this wire laying quality inspection device includes:

[0043] S1. Connect the vacuum tube 510 to the tubular vacuum bag 200 using a sealing strip, and install the valve 520;

[0044] S2. Connect vacuum tube 510 and vacuum junction tube 540 using the connecting connector, and connect vacuum junction tube 540 to vacuum gauge;

[0045] S3. Connect the vacuum gauge to the vacuum source;

[0046] S4. Visual inspection of each vacuum tube 510 is sufficient for testing, and vacuum seal checks can be performed as needed.

[0047] 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 device for detecting the quality of fiber placement, characterized in that, include: The hat-shaped stringer (100) is configured as a zigzag structure, the zigzag structure having a groove; A tubular vacuum bag (200) is fitted into the groove, and a supporting core mold (300) is provided inside the cavity of the tubular vacuum bag (200); A skin panel (400) is laid on the cap-shaped stringer (100) and located on the opening side of the groove; A vacuum assembly includes a vacuum tube (510), a valve (520), and a vacuum gauge. The vacuum tube (510) is connected to the tubular vacuum bag (200). The valve (520) is installed on the vacuum tube (510). The vacuum gauge is provided at the end of the vacuum tube (510) away from the tubular vacuum bag (200).

2. The fiber placement quality detection device according to claim 1, characterized in that, The hat-shaped stringer (100), the tubular vacuum bag (200), the vacuum tube (510), and the valve (520) are all provided in multiples. The multiple hat-shaped stringers (100) and the multiple tubular vacuum bags (200) are arranged in a one-to-one correspondence. The multiple vacuum tubes (510) and the multiple tubular vacuum bags (200) are arranged in a one-to-one correspondence. The multiple valves (520) and the multiple vacuum tubes (510) are arranged in a one-to-one correspondence.

3. The fiber placement quality detection device according to claim 2, characterized in that, The end of the vacuum tube (510) away from the tubular vacuum bag (200) is connected to the vacuum gauge via a connector.

4. The fiber placement quality detection device according to claim 3, characterized in that, Two vacuum tubes (510) form a set, and the connecting joint is a T-joint. The two vacuum tubes (510) are connected to the vacuum gauge through the T-joint.

5. The fiber placement quality detection device according to claim 3, characterized in that, The three vacuum tubes (510) form a group, and the connecting connector is a four-way connector (530). The three vacuum tubes (510) are connected to the vacuum gauge through the four-way connector (530).

6. The fiber placement quality detection device according to claim 3, characterized in that, The vacuum tube (510) includes a rigid tube (511) and a flexible tube (512) connected to each other. The rigid tube (511) is connected to the tubular vacuum bag (200), and the flexible tube (512) is connected to the connecting joint.

7. The fiber placement quality detection device according to claim 3, characterized in that, The connecting joint is connected to the vacuum gauge via a vacuum conduit (540).

8. The fiber placement quality detection device according to claim 7, characterized in that, The vacuum manifold (540) includes several branch pipes (541) and a vacuum main pipe (542). The number of branch pipes (541) and the number of connecting joints are the same. One end of each branch pipe (541) is connected to the connecting joint, and the other end of each branch pipe (541) is connected to the vacuum main pipe (542). The vacuum main pipe (542) is connected to the vacuum gauge.

9. The fiber placement quality detection device according to claim 8, characterized in that, The diameter of the vacuum tube (510) is smaller than the diameter of the branch tube (541), and the diameter of the branch tube (541) is equal to the diameter of the main vacuum tube (542).

10. The fiber placement quality detection device according to claim 1, characterized in that, The vacuum tube (510) and the tubular vacuum bag (200) are sealed together by a sealing strip.

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