Elastic clamp for edge glue sealing of honeycomb sandwich plate

Abstract

An elastic clamp for sealing the edge of a honeycomb sandwich plate with glue comprises the honeycomb sandwich plate, a glue blocking plate, an auxiliary pin, a plug, a clamping plate and two springs, the auxiliary pin is inserted into a connecting piece installation hole of the honeycomb sandwich plate, and the upper end and the lower end of the auxiliary pin are respectively provided with installation holes for the springs to penetrate through. The spring penetrates through the mounting hole and then is in threaded connection with the plug, clamping grooves and bosses are arranged at the two ends of the clamping plate in a staggered mode, the bosses are arranged between the two clamping grooves, the spring is fixed to the bosses through the clamping grooves, and the clamping plate is tightly attached to the rubber blocking plate. The honeycomb sandwich plate is clamped through the auxiliary pin and the clamping plate, clamping force is provided through the springs fixed to the two ends of the clamping plate, the flatness of the edge of the composite honeycomb sandwich plate on the edge-sealed rear end face is effectively guaranteed, the edge sealing device is applied to machining and manufacturing of civil aircraft passenger and cargo compartment floors at present, and the edge sealing effect of the sandwich plate is remarkable.

Description

TECHNICAL FIELD

[0001] The utility model relates to composite material manufacturing technical field especially relates to a honeycomb sandwich panel edge glue sealing elastic clamp. BACKGROUND

[0002] The composite material honeycomb sandwich panel is composed of upper and lower fiber panels and honeycomb core, and the honeycomb core and the fiber panel are glued together through a glue film layer. The honeycomb sandwich panel with such structure has certain rigidity and bending resistance, and also has excellent performance such as light weight, corrosion resistance, sound insulation and flame resistance, and is widely used in the field of aerospace, especially in the application of passenger and cargo cabin floor of civil aircraft.

[0003] After the composite material honeycomb sandwich panel is numerically controlled, the edge thereof needs to be sealed, and corresponding fasteners are glued at the places where connecting member mounting holes are opened, so that the subsequent assembly, maintenance and exchange requirements are met. The edge sealing can not only prevent the honeycomb core in the honeycomb sandwich panel from absorbing moisture and being damp, but also can enhance the rigidity, strength and service life of the whole honeycomb sandwich panel, thereby reducing the maintenance frequency of the honeycomb sandwich panel and reducing the cost. However, after the edge of the honeycomb sandwich panel is sealed with glue, the glue cannot be scraped off by artificial scraping plate, and the sealing flatness cannot meet the design requirements, thereby affecting the quality of the product. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem of providing a honeycomb sandwich panel edge glue sealing elastic clamp to solve the problem in the above background art.

[0005] The technical problem solved by the utility model is solved by adopting the following technical solutions:

[0006] A honeycomb sandwich panel edge glue sealing elastic clamp, comprising a honeycomb sandwich panel, a glue blocking plate, an auxiliary pin, a plug, a clamping plate and two springs, wherein the auxiliary pin is inserted into the connecting member mounting hole of the honeycomb sandwich panel, the upper end and the lower end of the auxiliary pin are respectively provided with mounting holes for the spring to pass through, the spring is threadedly connected with the plug after passing through the mounting hole, the clamping plate is provided with clamping grooves and bosses at the two ends, the bosses are arranged between the two clamping grooves, the spring is fixed on the bosses through the clamping grooves, and the clamping plate is tightly attached to the glue blocking plate.

[0007] In the utility model, the auxiliary pin is provided with a countersunk head hole matched with one side end of the threaded hole of the plug, so as to ensure the stability after connection.

[0008] In the utility model, the height of the clamping plate is the same as the height of the honeycomb sandwich panel and the auxiliary pin.

[0009] In the utility model, the diameter of the auxiliary pin matches the diameter of the connecting member mounting hole on the honeycomb sandwich panel, so as to ensure the stability and balance of the elastic clamp after clamping.

[0010] In the utility model, the spring two end heads have threads, one end head thread is connected with the threaded hole arranged on the plug in a threaded mode, so as to disassemble and assemble the elastic clamp.

[0011] In the utility model, the opening diameter of the clamping groove is larger than the wire diameter of the spring, and the spacing between the two clamping grooves on the same side is smaller than the inner diameter of the spring.

[0012] In the utility model, the axis between the two bosses arranged on the clamping plate is perpendicular to the upper and lower surfaces of the clamping plate and passes through the symmetry axis in the height direction of the clamping plate, the boss must have a certain height to ensure that the elastic clamp can stably, firmly and balancedly clamp the rubber blocking plate, so that the quality of the edge rubber sealing meets the design and process specification requirements.

[0013] Beneficial effects: the utility model discloses a clamping plate and a spring are fixed on both ends of the clamping plate to clamp the honeycomb sandwich plate, and the spring provides a holding force, effectively ensures the flatness of the edge of the composite honeycomb sandwich plate after edge sealing, and the utility model has been applied to the processing and manufacturing of the passenger and cargo cabin floor of a civil aircraft, and the edge rubber sealing effect of the sandwich plate is remarkable. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the front view of the preferred embodiment of the utility model.

[0015] Figure 2 It is the clamping plate structure schematic view in the preferred embodiment of the utility model.

[0016] Figure 3 It is the honeycomb sandwich plate structure schematic view in the preferred embodiment of the utility model.

[0017] Figure 4 It is Figure 3 It is the section view at A-A in the utility model.

[0018] Figure 5 It is the edge rubber sealing schematic view of the honeycomb sandwich plate in the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific drawings.

[0020] Reference Figures 1-5The utility model provides an elastic clamp of a honeycomb sandwich plate edge seal glue, including auxiliary pin 1, plug 2, clamping plate 3, spring 4, card slot 5 and boss 6, wherein, the effective height of auxiliary pin 1 is coordinated with the thickness of honeycomb sandwich plate 7, the diameter of auxiliary pin 1 matches the diameter of the connecting piece mounting hole on honeycomb sandwich plate 7 to ensure the stability and balance of the elastic clamp after clamping, the both ends of spring 4 are provided with threads and are matched with the threaded hole of plug 2 to facilitate the disassembly of the elastic clamp, the length of spring 4 is designed according to the distance from the connecting piece mounting hole on honeycomb sandwich plate 7 to the edge to ensure that spring 4 has enough force to clamp the glue blocking plate 13, auxiliary pin 1 is provided with a countersunk hole matched with the end of the threaded hole of plug 2 to ensure stability after connection, the height of clamping plate 3 is same with the height of honeycomb sandwich plate 7 and auxiliary pin 1, the both ends of clamping plate 3 are staggered and provided with card slot 5 and boss 6, and boss 6 is arranged between two card slot 5s;

[0021] The opening diameter of card slot 5 is greater than the wire diameter of spring 4, and the spacing between two card slot 5s on the same side is less than the inner diameter of spring 4, the axis between two bosses 6 arranged on clamping plate 3 is perpendicular to the upper and lower surfaces of clamping plate 3 and passes through the symmetry axis in the height direction of clamping plate 3, and boss 6 must have a certain height to ensure that the elastic clamp can stably, firmly and balancedly clamp glue blocking plate 13, so that the quality of edge seal glue meets the design and process specification requirements.

[0022] In the embodiment, the edge seal glue of honeycomb sandwich plate 7 is as shown in Figure 3 、 4 , 5, 8 is fiber panel, 9 is glue film layer, 10 is honeycomb core, 11 is connecting piece mounting hole, 12 is edge seal glue, 13 is glue blocking plate, and 14 is surface film, and the utility model has the advantages of the following:

[0023] According to the design requirement, a certain amount of honeycomb core 10 of honeycomb sandwich plate 7 is removed, the fiber panel 8 cannot be damaged in the removal process, the glue film layer 9 on the fiber panel 8 is cleaned after removal, a certain amount of glue film layer 9 is allowed to remain, the fiber panel 8 is also not damaged in the cleaning process, all dust and debris are removed after cleaning to ensure that the edge seal glue area is clean and free of any excess, so that the subsequent edge seal glue quality meets the requirements;

[0024] The edge sealing glue 12 is filled into the edge of the glass fiber aramid honeycomb core sandwich panel 7 removing a certain amount of the honeycomb core 10 in a processing room meeting the process specification requirements, and the edge sealing glue is blocked by the glue blocking plate 13, one side of the glue blocking plate 13 is pasted with the surface film 14, the surface film 14 is in contact with the edge sealing glue 12, the surface film 14 is required to be flat, have a certain thickness and air guiding effect, and the edge sealing glue is easy to tear off after solidification, then the glue blocking plate 13 is clamped and fixed by the elastic clamp through the connecting piece mounting hole 11 on the honeycomb sandwich panel 7, in the clamping process, one end of a spring 4 is inserted into the mounting hole in the upper end of the auxiliary pin 1, and is tightly fixed by a plug 2, then the auxiliary pin 1 is inserted into the connecting piece mounting hole 11 on the honeycomb sandwich panel 7, and one end of another spring 4 is inserted into the mounting hole in the lower end of the auxiliary pin 1, and is tightly fixed by another plug 2, then one side of the clamping plate 3 with the boss 6 is placed close to the glue blocking plate 13, the two bosses 6 are located on the upper and lower sides of the glue blocking plate 13, and the clamping plate 3 is kept stationary, then the springs 4 are pulled respectively, so that the pitch of the stretched springs 4 is greater than the height of the boss 6, the springs 4 are fixed on the boss 6 through the clamping groove 5, the pulling amount of the spring 4 should not be too large or too small, so as to ensure that the surface film 14 is tightly and closely attached to the end surface of the edge sealing glue 12 of the honeycomb sandwich panel 7, after the edge sealing glue 12 is completely solidified, the clamping plate 3 can be removed by pulling the spring 4 again, then the plug 2 at the lower end of the auxiliary pin 1 is unscrewed, and the spring 4 connected with the plug 2 is removed, then the auxiliary pin 1 is removed together with the plug 2 and the spring 4 at the upper end of the auxiliary pin 1, finally, the glue blocking plate 13 and the surface film 14 of the edge sealing glue of the honeycomb sandwich panel 7 are removed, so that the edge sealing of the honeycomb sandwich panel 7 is completed.

[0025] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, for those skilled in the art, obviously, the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A flexible clamp for edge sealing of honeycomb sandwich panels, comprising a honeycomb sandwich panel, a glue stop plate, an auxiliary pin, a plug, a clamp plate and two springs, characterized in that, The auxiliary pin is inserted into the connecting piece mounting hole of the honeycomb sandwich panel, the upper end and the lower end of the auxiliary pin are respectively provided with mounting holes for the spring to pass through, the spring passes through the mounting hole and is threadedly connected with the plug, the two ends of the clamping plate are staggered and provided with clamping grooves and bosses, the boss is arranged between the two clamping grooves, the spring is fixed on the boss through the clamping groove, and the clamping plate is tightly attached to the rubber blocking plate; the axis between the two bosses arranged on the clamping plate is perpendicular to the upper and lower surfaces of the clamping plate and passes through the symmetry axis in the height direction of the clamping plate.

2. The elastic clamp for edge sealing of a honeycomb sandwich panel according to claim 1, wherein The auxiliary pin is provided with a countersunk head recess matched with one side end of the threaded hole of the plug.

3. The elastic clamp for edge sealing of a honeycomb sandwich panel according to claim 1, wherein The height of the clamping plate is the same as the height of the honeycomb sandwich panel and the auxiliary pin.

4. The elastic clamp for edge sealing of a honeycomb sandwich panel according to claim 1, wherein The diameter of the auxiliary pin matches the diameter of the connecting piece mounting hole of the honeycomb sandwich panel.

5. The elastic clamp for edge sealing of a honeycomb sandwich panel of claim 1, wherein, The two ends of the spring are provided with threads, and the thread of one end is threadedly connected with the threaded hole arranged on the plug.

6. The elastic clamp for edge sealing of a honeycomb sandwich panel according to claim 1, wherein The opening diameter of the clamping groove is greater than the wire diameter of the spring, and the spacing between the two clamping grooves located on the same side is less than the inner diameter of the spring.

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