CN213500931U

CN213500931U - A splicing device for large-size paper honeycomb parts

Info

Publication number: CN213500931U
Application number: CN202022468808.6U
Authority: CN
Inventors: 赵长江; 戴天; 冒海峰; 周娴; 郭渊; 马秀菊; 华文龙; 张旭
Original assignee: Aerospace Haiying Zhenjiang Special Material Co ltd
Current assignee: Aerospace Haiying Zhenjiang Special Material Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-06-22
Anticipated expiration: 2030-10-30

Abstract

The utility model discloses a splicing device for large-size paper honeycomb parts, which comprises a splicing forming tool, wherein a honeycomb interlayer to be spliced is packaged on the splicing forming tool; paving and pasting foaming glue at the splicing seams between the honeycomb interlayers to be spliced; a first isolation layer is laid between the honeycomb interlayer and the splicing forming tool, and second isolation layers are laid above the honeycomb interlayer respectively; a plurality of pressing plates are arranged above the second isolation layer; the peelable cloth is laid above the splicing seams, the third isolation layer is laid above the peelable cloth, and the gasket is placed on the third isolation layer. The splicing method comprises the steps of packaging honeycomb core materials and the like on a splicing forming tool according to requirements and curing; the pressing plate fixes the honeycombs on the two sides of the foaming adhesive to prevent the honeycombs from sliding, so that the width of a splicing gap caused by thermal expansion of the foaming adhesive is reduced; the gasket is placed on the splicing seam to uniformly transmit pressure. The utility model discloses the concatenation is simple, easily controls, can improve the quality and the qualification rate of concatenation back honeycomb greatly.

Description

Splicing device for large-size paper honeycomb parts

Technical Field

The utility model relates to a splicing apparatus of jumbo size paper honeycomb part.

Background

The honeycomb sandwich structure composite material part is formed by clamping a layer of honeycomb core by two high-strength upper and lower composite material panels, and has the advantages of light weight, high bending strength and rigidity, strong instability resistance, fatigue aging resistance, sound absorption, sound insulation, good heat insulation performance and the like. The honeycomb sandwich structure composite material is widely applied at present, particularly in the field of aerospace, and is widely applied to aircraft structures such as wings, fuselages, empennages, radomes, floors, interior trims and the like, and the honeycomb sandwich structure becomes one of indispensable structural materials in the field due to the excellent performance of the honeycomb sandwich structure.

The core material inside the composite material sandwich structure is often spliced by using the foaming adhesive under the condition that the required size is larger than the size of the raw material, the filling and weight reduction effects are ensured, the thermal expansion coefficient of the foaming adhesive in the curing process is large, the problems that the honeycomb slides easily, the splicing seams are sunken, the splicing seams have bubbles, the splicing seam step difference and the splicing seam size out-of-tolerance and the like are caused, and the appearance quality of the honeycomb core part is influenced.

SUMMERY OF THE UTILITY MODEL

To the problem that exists, the utility model provides a concatenation method of jumbo size paper honeycomb part to solve the great problem that slides and concatenation department is out of tolerance of the honeycomb that leads to because of the expansion stress of foaming glue thermal energy of part size. The specific technical scheme is as follows:

the utility model provides a splicing device for large-size paper honeycomb parts, which comprises a splicing forming tool, wherein a honeycomb interlayer to be spliced is packaged on the splicing forming tool; paving and pasting foaming glue at the splicing seams between the honeycomb interlayers to be spliced; a first isolation layer is laid between the honeycomb interlayer and the splicing forming tool, and second isolation layers are laid above the honeycomb interlayer respectively; a plurality of pressing plates are arranged above the second isolation layer; the peelable cloth is laid above the splicing seams, the third isolation layer is laid above the peelable cloth, and the gasket is placed on the third isolation layer.

Preferably, the honeycomb sandwich layer is aramid paper honeycomb.

Preferably, the surface of the splicing forming tool type is consistent with the molded surface of the spliced honeycomb part.

Preferably, the first isolation layer, the second isolation layer and the third isolation layer are all isolation films.

Preferably, the pressing plate is made of a metal plate or a composite material.

Preferably, the gasket is made by cutting metal sheets or composite materials, and the thickness of the gasket is less than 1.5 mm.

The splicing method of the large-size paper honeycomb part comprises the following steps:

1) cutting a required honeycomb interlayer according to the part processing requirement;

2) placing the cut honeycomb interlayer on a splicing forming tool paved with a first isolation layer, and paving foaming glue at the splicing seams of the honeycomb interlayer;

3) laying second isolation layers on the honeycomb interlayers on two sides of the splicing seams respectively, and then placing a plurality of pressing plates on the second isolation layers;

4) and sequentially laying peelable cloth, a third isolation layer and a gasket above the splicing seams of the honeycomb interlayer, and then packaging and curing by using a sealing bag.

In the step 2), the foam adhesive is spread at the splicing seams of the honeycomb sandwich layer and is heated and softened by a hot air gun, and then the foam adhesive is manually pressed into the core grids of the honeycomb sandwich layer and then spliced.

As a further preferable technical scheme, the heating of the hot air gun requires that the distance between the air outlet and the foaming adhesive is not less than 150mm, the highest air temperature at the position 75mm away from the air outlet is not more than 93 ℃, and the hot air gun is required to move ceaselessly to avoid local overheating when in use.

Preferably, in the step 3), the pressure applied by a single pressing plate on the honeycomb interlayer is not more than 45N; in the step 4), the pressure applied by the gasket on the honeycomb interlayer does not exceed 45N.

The utility model discloses concatenation device and method of jumbo size paper honeycomb part possess following beneficial effect:

1) the forming tool can be used for pre-forming the spliced and cured honeycomb, so that the fracture or deformation of the spliced seam when the honeycomb and the skin are co-cured is avoided; 2) the foaming adhesive is heated and softened and is pressed into the honeycomb core grids, so that splicing operation is facilitated, bubbles in the spliced seams can be discharged as much as possible, and the spliced seam quality is improved; 3) the honeycomb core can be fixed by using the pressing plate, so that the honeycomb slippage or the seam size over-tolerance caused by expansion of the foaming glue can be avoided; 4) the shape-following gasket and the peelable cloth are used for pressing the abutted seams, the peelable cloth can be used for removing redundant foaming adhesive, the shape-following performance and the rigidity of the gasket are utilized, the surface of the abutted seams is guaranteed to be smooth, and the stepped difference and the depression of the abutted seams are avoided. Therefore the utility model discloses a honeycomb concatenation method can realize the preparation of high quality, the high qualification rate of jumbo size honeycomb core part, establishes the basis for the follow-up qualified honeycomb sandwich structure combined material part of making.

Drawings

FIG. 1 is a schematic structural view of a splicing device for large-size paper honeycomb parts according to the present invention;

fig. 2 is the utility model discloses splicing apparatus cross-sectional structure schematic diagram of jumbo size paper honeycomb part.

In the figure: 1. splicing and forming a tool; 2. a honeycomb interlayer; 3. splicing seams; 4. a first isolation layer; 5. a second isolation layer; 6. a third isolation layer; 7. pressing a plate; 8. the cloth can be peeled; 9. and (7) a gasket.

Detailed Description

The technical solution of the present invention will be described more fully with reference to the accompanying drawings and examples, it is to be understood that the embodiments described are merely illustrative of the presently preferred embodiments, rather than restrictive, and that various changes, modifications and equivalents may be resorted to by those skilled in the art. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Example 1

The embodiment is a splicing device and a splicing method for large-size paper honeycomb parts, wherein the splicing device for the large-size paper honeycomb parts comprises a splicing forming tool 1 as shown in fig. 1 and fig. 2, and a honeycomb interlayer 2 to be spliced is packaged on the splicing forming tool 1; paving foaming glue at the splicing seams 3 between the honeycomb interlayers 2 to be spliced; a first isolation layer 4 is laid between the honeycomb interlayer 2 and the splicing forming tool 1, and second isolation layers 5 are laid above the honeycomb interlayer 2 respectively; a plurality of pressing plates 7 are arranged above the second isolation layer 5; the peelable cloth 8 is laid above the splicing seams 3, the third isolation layer 6 is laid above the peelable cloth 8, and the gasket 9 is placed on the third isolation layer 6. The pressing plate is used for fixing honeycombs on two sides of the foaming adhesive to prevent the honeycombs from sliding, so that the width of a splicing gap caused by thermal expansion of the foaming adhesive is reduced; and using a gasket to place on the splice seam to uniformly transfer pressure. Compared with the traditional honeycomb splicing method, the utility model discloses the splicing method is simple, easily with control, can improve the quality and the qualification rate of concatenation back honeycomb greatly.

In this embodiment, the honeycomb interlayer 2 is an aramid paper honeycomb; the surface of the splicing forming tool 1 is consistent with the molded surface of the spliced honeycomb part; the first isolation layer 4, the second isolation layer 5 and the third isolation layer 6 are all isolation films; the pressing plate 7 is made of a metal plate or a composite material; the gasket 9 is made of metal sheets or composite materials by cutting, and the thickness of the gasket is less than 1.5 mm.

1) and cutting the required honeycomb interlayer 2 according to the part processing requirement.

2) Placing the cut honeycomb interlayer 2 on a splicing forming tool 1 paved with a first isolation layer 4, and paving foaming glue at a splicing seam 3 of the honeycomb interlayer 2; and (3) heating and softening by using a hot air gun, manually pressing the foaming adhesive into the core grids of the honeycomb interlayer 2, and splicing. The heating of the hot air gun requires that the distance between the air outlet and the foaming adhesive is not less than 150mm, the highest air temperature at a position 75mm away from the air outlet is not more than 93 ℃, and the hot air gun is required to move ceaselessly to avoid local overheating when in use.

3) And second isolation layers 5 are respectively paved on the honeycomb interlayers 2 at two sides of the splicing seams 3, and then a plurality of pressing plates 7 are respectively paved on the second isolation layers 5. The pressure exerted by the single pressing plate 7 on the honeycomb sandwich layer 2 is not more than 45N; the number of the pressing plates is not limited and can be determined according to the size of the honeycomb.

4) The peelable cloth 8, the third isolation layer 6 and the gasket 9 are sequentially laid above the splicing seams 3 of the honeycomb interlayer 2, the pressure applied to the honeycomb interlayer 2 by the gasket 9 does not exceed 45N, the honeycomb molded surface can be completely attached under the vacuum pressure of-0.034 MPa, and meanwhile, the honeycomb molded surface has certain rigidity and the surface flatness is improved. And then packaging and curing by using a sealing bag.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A splicing device for large-size paper honeycomb parts, characterized in that it comprises a splicing and forming tool (1), and the honeycomb interlayer (2) to be spliced is packaged on the splicing and forming tool (1); Styrofoam glue is applied at the splicing seam (3) between the honeycomb interlayers (2); a first isolation layer (4) is laid between the honeycomb interlayer (2) and the splicing and forming tool (1), and the upper part of the honeycomb interlayer (2) is respectively A second isolation layer (5) is laid; several pressing plates (7) are placed above the second isolation layer (5); a peelable cloth (8) is laid above the seam (3), and the peelable cloth ( 8) A third isolation layer (6) is laid above, and a gasket (9) is placed on the third isolation layer (6).

2 . The splicing device for large-sized paper honeycomb parts according to claim 1 , wherein the honeycomb interlayer ( 2 ) is an aramid paper honeycomb. 3 .

3 . The splicing device for large-sized paper honeycomb parts according to claim 1 , characterized in that: the surface of the splicing and forming tool (1) is the same as that of the spliced honeycomb parts. 4 .

4. The splicing device for large-sized paper honeycomb parts according to claim 1, wherein the first isolation layer (4), the second isolation layer (5) and the third isolation layer (6) are all isolation layers membrane.

5 . The splicing device for large-sized paper honeycomb parts according to claim 1 , wherein the pressing plate ( 7 ) is made of metal plate or composite material. 6 .

6 . The splicing device for large-sized paper honeycomb parts according to claim 1 , wherein the gasket ( 9 ) can be cut from metal sheets or composite materials, and its thickness is less than 1.5 mm. 7 .