Insert mounting fixture

Abstract

The utility model belongs to the technical field of composite material plate assembly, and discloses an embedded part installation clamp. The embedded part installation clamp comprises a frame, a pull rod, an elastic part, a first base plate and a second base plate, the pull rod penetrates through the frame in the first direction, the first base plate is connected to the pull rod, the second base plate is arranged on the frame, the first base plate and the second base plate are oppositely arranged in the first direction, and the elastic part is connected to the frame and the first base plate. The pull rod and the first base plate can move in the first direction. The composite board with the embedded part is arranged between the first base plate and the second base plate, under the action of the elastic part, the first base plate moves and gets close to the second base plate till the composite board and the embedded part abut against the second base plate, clamping of the composite board and the embedded part is achieved, and in the glue curing process, the embedded part is clamped. The embedded part mounting clamp provides stable clamping force to prevent the embedded part from moving up and down, and the levelness tolerance between the embedded part and the surface of the composite board is effectively controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material plate assembly, in particular to an embedded part installation fixture. Background Art

[0002] Composite materials are composed of two or more different materials. Through the complementarity and correlation of the properties of each component material, comprehensive properties that cannot be achieved by a single material can be obtained. Honeycomb sandwich structure is a special type of composite material. Honeycomb sandwich structure is composed of three basic materials. It has the advantages of low density, low thermal conductivity and high strength. It has been widely used in the aerospace field.

[0003] In the prior art, aircraft use honeycomb sandwich composite panels as floors. When installing honeycomb sandwich composite panels, it is necessary to install embedded parts as installation bases, and use the plastic patches of the embedded parts to position the embedded parts, protect the fasteners and provide a certain support force. Since the plastic patches are soft and not rigid enough, they cannot provide support force for a long time, resulting in the embedded parts being easily affected by the flow of glue or external forces during the curing process of the glue, causing them to move up and down, and the flushness of the embedded parts is difficult to ensure, resulting in a low overall qualified rate of the composite panels.

[0004] That is, in the existing assembly method of honeycomb sandwich structure composite panels, the embedded parts are easily affected by the flow of glue or external forces and thus move up and down, which has the disadvantages of difficult to ensure the flatness of the embedded parts and a low overall qualified rate of the composite panels. Utility Model Content

[0005] The purpose of the utility model is to provide an embedded component installation fixture to ensure that during the installation and glue curing process, the embedded component will not move up and down due to the flow of glue or external force, effectively control the flushness tolerance between the embedded component and the surface of the composite board, thereby improving the overall qualification rate.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides an embedded component installation fixture, which includes:

[0008] A frame and a pull rod, wherein the pull rod is passed through the frame along a first direction;

[0009] A first pad and a second pad, wherein the first pad is connected to the pull rod, the second pad is disposed on the frame, and the first pad and the second pad are disposed opposite to each other along the first direction;

[0010] An elastic member is connected to the frame and the first pad. Under the action of the elastic member, the pull rod and the first pad can move along the first direction to press the composite plate and the embedded member against the second pad.

[0011] As an optional technical solution of an insert mounting fixture, the first pad includes:

[0012] A first substrate connected to the pull rod;

[0013] The first anti-sticking layer is arranged on a side of the first substrate away from the pull rod.

[0014] As an optional technical solution for an embedded component installation fixture, the first anti-sticking layer is made of a flexible material, the first pad also includes a first elastic layer, and two sides of the first elastic layer are respectively bonded to the first substrate and the first anti-sticking layer.

[0015] As an optional technical solution for an embedded component mounting fixture, the first substrate is made of a composite laminate sheet or a metal sheet.

[0016] As an optional technical solution for an embedded component installation fixture, the first anti-sticking layer is made of a release cloth material, an isolation film, or a release agent material.

[0017] As an optional technical solution of an insert mounting fixture, the second pad includes:

[0018] A second substrate is disposed on the frame;

[0019] The second anti-sticking layer is arranged on a side of the second substrate facing the first pad.

[0020] As an optional technical solution for an embedded component installation fixture, the second anti-sticking layer is made of a flexible material, the second pad also includes a second elastic layer, and two sides of the second elastic layer are respectively bonded to the second substrate and the second anti-sticking layer.

[0021] As an optional technical solution for an insert mounting fixture, the frame is C-shaped;

[0022] And / or, the frame is made of metal material.

[0023] As an optional technical solution of the insert installation fixture, the elastic member includes a torsion spring sleeved outside the pull rod.

[0024] As an optional technical solution of the insert installation fixture, a gripping portion is provided at one end of the pull rod, and the other end of the pull rod is connected to the first pad.

[0025] Beneficial effects:

[0026] The utility model provides an embedded component installation fixture, which includes a frame, a pull rod, an elastic member, a first pad and a second pad. The pull rod is inserted into the frame along a first direction, the first pad is connected to the pull rod, and the second pad is arranged on the frame. The first pad and the second pad are arranged relatively along the first direction. The elastic member is connected to the frame and the first pad. Under the action of the elastic member, the pull rod and the first pad can move along the first direction to press the composite plate and the embedded component against the second pad. The first pad and the second pad can provide effective support for the embedded component. The composite plate loaded with the embedded component is placed between the first pad and the second pad. Under the action of the elastic member, the first pad moves and approaches the second pad until the composite plate and the embedded component are pressed against the second pad, so as to realize the clamping of the composite plate and the embedded component. During the curing process of the glue, the embedded component installation fixture provides a stable clamping force to prevent the embedded component from moving up and down, effectively controlling the flushness tolerance between the embedded component and the composite plate surface, thereby improving the overall qualified rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a cross-sectional view of an insert installation fixture provided by an embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the insert and patch provided in the embodiment of the utility model. Figure 1 ;

[0029] Figure 3 This is a schematic diagram of the structure of the insert and patch provided in the embodiment of the utility model. Figure 2 ;

[0030] Figure 4 It is a schematic diagram of the structure of the composite board, the embedded part and the patch provided in the embodiment of the utility model.

[0031] In the figure:

[0032] 100, composite board; 200, embedded part; 300, patch;

[0033] 10. frame; 20. tie rod; 30. elastic member;

[0034] 40. first pad; 41. first substrate; 42. first elastic layer; 43. first anti-sticking layer;

[0035] 50. Second pad; 51. Second substrate; 52. Second elastic layer; 53. Second anti-sticking layer. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] Composite panels are installed on aircraft as floors, and the floors usually use all-composite sandwich panel structures. As a special type of composite material, honeycomb sandwich structures must be equipped with embedded parts as installation bases where fasteners are connected to other parts of the honeycomb sandwich structure. The number of embedded parts installed on composite panels of different sizes in different areas varies. During the operation of installing embedded parts on composite panels, it is impossible to achieve real-time measurement and it is difficult to accurately control the position of embedded parts, resulting in an overall qualified rate of less than 30%.

[0041] For example, if there are dozens of embedded parts on a composite board, if the flushness of one embedded part with the composite board surface exceeds the tolerance, the quality of the entire floor panel after assembly will be unqualified. Therefore, an embedded part installation fixture is needed to ensure that during the installation and glue curing process, the embedded part will not move up and down due to the flow of glue or external force, and effectively control the flushness tolerance between the embedded part and the composite board surface.

[0042] like Figures 1 to 4 As shown, the insert installation fixture includes a frame 10, a pull rod 20, an elastic member 30, a first pad 40 and a second pad 50. The pull rod 20 is passed through the frame 10 along a first direction, the first pad 40 is connected to the pull rod 20, and the second pad 50 is arranged on the frame 10. The first pad 40 and the second pad 50 are arranged opposite to each other along the first direction; the elastic member 30 is connected to the frame 10 and the first pad 40. Under the action of the elastic member 30, the pull rod 20 and the first pad 40 can move along the first direction to press the composite plate 100 and the insert 200 against the second pad 50.

[0043] In this embodiment, the pull rod 20 and the first pad 40 move in the vertical direction, that is, the first direction involved in this embodiment is the vertical direction. The first pad 40 and the second pad 50 can provide effective support for the insert 200. The composite board 100 loaded with the insert 200 is placed between the first pad 40 and the second pad 50. Under the action of the elastic member 30, the first pad 40 moves and approaches the second pad 50 until the composite board 100 and the insert 200 are pressed against the second pad 50, so as to achieve the clamping of the composite board 100 and the insert 200. During the curing process of the glue, the insert installation fixture provides a stable clamping force to prevent the insert 200 from moving up and down, effectively controlling the flushness tolerance between the insert 200 and the surface of the composite board 100, thereby improving the overall qualified rate.

[0044] Specifically, the composite plate 100 is a honeycomb sandwich plate structure; the frame 10 is C-shaped. The frame 10 includes an upper support plate, a lower support plate and a support portion, the support portion extends along a first direction, the two ends of the support portion are respectively connected to the upper support plate and the lower support plate, the upper support plate and the lower support plate are arranged opposite to each other along the first direction; a clamping space is formed between the upper support plate and the lower support plate, and the composite plate 100 and the insert 200 can extend into the clamping space from one side and complete the clamping.

[0045] Preferably, the frame 10 is made of metal material, such as steel, iron, etc., which has a certain rigidity and strength. By setting the C-shaped frame 10, the frame 10 can play the role of a bracket, and by using a metal material with a certain rigidity and strength, the frame 10 can withstand a certain load.

[0046] In this embodiment, a through hole extending in the first direction is provided on the upper support plate of the frame 10, and the pull rod 20 is provided in the through hole. The bottom end of the pull rod 20 is connected to the first pad 40, and a grip portion is provided on the top end of the pull rod 20. By providing the grip portion, the pull rod 20 is gripped and pulled during operation.

[0047] In this embodiment, the two ends of the elastic member 30 are respectively connected to the upper support plate and the first pad 40; the elastic member 30 is sleeved on the outside of the pull rod 20, and the elastic member 30 is a torsion spring. By providing a torsion spring, after the pull rod 20 is released, the torsion spring provides a downward force to apply a certain pressure to the clamping position. Pulling the pull rod 20 to move along the first direction can adjust the distance between the first pad 40 and the second pad 50, thereby changing the clamping range, with high operational freedom and flexibility, and can meet the clamping requirements of composite plates 100 of different thicknesses. In other embodiments, the elastic member 30 may also be a conventional tension spring; the material of the elastic member 30 may also be selected according to actual conditions, such as high carbon steel or alloy steel.

[0048] Furthermore, the first pad 40 includes a first substrate 41 and a first anti-adhesion layer 43. The first substrate 41 is connected to the tie rod 20, and the first anti-adhesion layer 43 is disposed on the side of the first substrate 41 away from the tie rod 20. By arranging the first anti-adhesion layer 43 on the first substrate 41, when the composite board 100 and the insert 200 are clamped, the first anti-adhesion layer 43 separates the first substrate 41 from the composite board 100 and the insert 200, thereby playing an isolation role, and the first anti-adhesion layer 43 will not adhere to the potting glue, thereby preventing the potting glue from overflowing and causing the insert 200 to be bonded to the insert installation fixture.

[0049] The first substrate 41 is made of a composite laminate or a metal sheet (for example, a carbon fiber laminate has a high flatness); the first anti-adhesion layer 43 is made of a release cloth material or a release film or a release agent material. When the first anti-adhesion layer 43 is made of a release cloth material or a release film, the first anti-adhesion layer 43 needs to be bonded to the side of the first substrate 41 away from the pull rod 20; when the first anti-adhesion layer 43 is made of a release agent, the release agent needs to be coated on the side of the first substrate 41 away from the pull rod 20.

[0050] When the surface of the composite board 100 is a micro-curved surface, in order to achieve effective bonding between the first pad 40 and the composite board 100 and the insert 200, the first anti-adhesion layer 43 is made of a flexible material, and the first pad 40 further includes a first elastic layer 42, and the two sides of the first elastic layer 42 are respectively bonded to the first substrate 41 and the first anti-adhesion layer 43. By arranging the first elastic layer 42 between the first substrate 41 and the first anti-adhesion layer 43, the first elastic layer 42 is made of an elastic material, and through the first elastic layer 42 and the first anti-adhesion layer 43, effective bonding can be achieved even for micro-curved parts, which helps to control the flushness of the composite board 100 and the insert 200.

[0051] Correspondingly, the second pad 50 includes a second substrate 51 and a second anti-adhesive layer 53, the second substrate 51 is arranged on the frame 10, and the second anti-adhesive layer 53 is arranged on the side of the second substrate 51 facing the first pad 40. Preferably, the second anti-adhesive layer 53 is made of a flexible material, and the second pad 50 also includes a second elastic layer 52, and the two sides of the second elastic layer 52 are respectively attached to the second substrate 51 and the second anti-adhesive layer 53. The composite board 100 is placed on the second pad 50, and the surface of the second pad 50 cooperates with the surface of the composite board 100 to play a reference role; the second substrate 51 is made of a composite laminated board or a metal board; the second anti-adhesive layer 53 is also made of a release cloth material or an isolation film or a release agent material; the second elastic layer 52 is made of an elastic material, such as silicone rubber or polyurethane elastomer.

[0052] In this embodiment, the first elastic layer 42 is bonded to the surface of the first substrate 41, and the first anti-adhesive layer 43 is disposed on the surface of the first elastic layer 42; the second elastic layer 52 is bonded to the surface of the second substrate 51, and the second anti-adhesive layer 53 is disposed on the surface of the second elastic layer 52. It is understandable that when the surface of the composite board 100 is a plane, the first elastic layer 42 and the second elastic layer 52 are not required.

[0053] In this embodiment, the first substrate 41 and the second substrate 51 are both flat plates. Since the flat plates have good flatness, a feeler gauge can be used with the surfaces of the first substrate 41 and the second substrate 51 as a reference to measure the gap between the surface of the composite plate 100 and the first pad 40 or the second pad 50, thereby effectively controlling the flatness tolerance between the insert 200 and the composite plate 100.

[0054] The following is the specific use process of the embedded installation fixture:

[0055] See also Figures 1 to 3 First, assemble the insert installation fixture; according to the process of potting the insert 200, install the insert 200 with the patch 300 in the composite board 100.

[0056] Next, potting glue is injected through the glue injection holes of the patch 300 and the insert 200. The patch 300 is removed from the insert 200, and the first anti-adhesive layer 43 and the second anti-adhesive layer 53 are respectively installed on the first substrate 41 and the second substrate 51 of the insert installation fixture.

[0057] See also Figure 4By pulling the pull rod 20 upward along the first direction, the pull rod 20 drives the first pad 40 to move, so that the distance between the first pad 40 and the second pad 50 increases, and the elastic member 30 is continuously compressed, and the composite plate 100 and the embedded member 200 are placed together in the clamping space of the frame 10 (i.e., the position between the first pad 40 and the second pad 50), so that the first pad 40 and the second pad 50 are respectively located on both sides of the composite plate 100 of the honeycomb sandwich structure; after loosening the pull rod 20, under the action of the elastic member 30, the first pad 40 presses the composite plate 100 and the embedded member 200 that has been potted against the second pad 50.

[0058] The insert installation fixture provides a continuous and stable clamping force during the curing process of the insert 200 potting glue to prevent the insert 200 from moving up and down; as needed, a feeler gauge can also be placed between the insert 200 and the first pad 40 or the second pad 50 to measure the gap between the upper and lower ends of the insert 200 and the surface of the composite board 100, thereby adjusting and controlling the flatness.

[0059] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An insert mounting fixture, characterized in that: include: A frame (10) and a pull rod (20), wherein the pull rod (20) is passed through the frame (10) along a first direction; a first pad (40) and a second pad (50), wherein the first pad (40) is connected to the pull rod (20), and the second pad (50) is arranged on the frame (10), and the first pad (40) and the second pad (50) are arranged opposite to each other along the first direction; An elastic member (30) is connected to the frame (10) and the first pad (40). Under the action of the elastic member (30), the pull rod (20) and the first pad (40) can move along the first direction to press the composite plate (100) and the insert (200) against the second pad (50).

2. The insert installation fixture according to claim 1, characterized in that: The first pad (40) comprises: A first substrate (41) connected to the pull rod (20); A first anti-sticking layer (43) is arranged on a side of the first substrate (41) facing away from the pull rod (20).

3. The insert installation fixture according to claim 2, characterized in that: The first anti-adhesive layer (43) is made of a flexible material. The first pad (40) further comprises a first elastic layer (42). Two sides of the first elastic layer (42) are respectively bonded to the first substrate (41) and the first anti-adhesive layer (43).

4. The insert installation fixture according to claim 2, characterized in that: The first substrate (41) is made of a composite laminated sheet or a metal sheet.

5. The insert installation fixture according to claim 2, characterized in that: The first anti-sticking layer (43) is made of a release cloth material, a release film, or a release agent material.

6. The insert installation fixture according to claim 1, characterized in that: The second pad (50) comprises: A second substrate (51) is disposed on the frame (10); A second anti-sticking layer (53) is arranged on a side of the second substrate (51) facing the first pad (40).

7. The insert installation fixture according to claim 6, characterized in that: The second anti-adhesive layer (53) is made of a flexible material, and the second pad (50) further comprises a second elastic layer (52), and two sides of the second elastic layer (52) are respectively bonded to the second substrate (51) and the second anti-adhesive layer (53).

8. The insert installation fixture according to any one of claims 1 to 7, characterized in that: The frame (10) is C-shaped; And / or, the frame (10) is made of metal material.

9. The insert installation fixture according to any one of claims 1 to 7, characterized in that: The elastic member (30) comprises a torsion spring sleeved outside the pull rod (20).

10. The insert installation fixture according to any one of claims 1 to 7, characterized in that: One end of the pull rod (20) is provided with a gripping portion, and the other end of the pull rod (20) is connected to the first pad (40).

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