CN210555549U

CN210555549U - I-shaped composite material long-purlin wallboard structure and forming die

Info

Publication number: CN210555549U
Application number: CN201921381183.0U
Authority: CN
Inventors: 丛晶洁; 李星; 温顺达; 李梦琳; 黄豪杰; 王杰
Original assignee: Commercial Aircraft Corp of China Ltd; Beijing Aeronautic Science and Technology Research Institute of COMAC
Current assignee: Commercial Aircraft Corp of China Ltd; Beijing Aeronautic Science and Technology Research Institute of COMAC
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-05-19
Anticipated expiration: 2029-08-23

Abstract

The utility model relates to the technical field of composite materials of airplanes, and provides an I-shaped long purlin wallboard structure, a forming die and a forming method of composite materials, wherein the wallboard structure comprises a plurality of C-shaped laying layers, a middle inserting layer, a flange inserting layer and a skin laying layer; the C-shaped paving layers are laid on the skin paving layers in parallel, and the closed part of the C-shaped paving layers is connected with the skin paving layers in a curing mode; a middle intercalation layer is arranged in a gap between the adjacent C-shaped layers and is connected with the skin layer in a curing way; the flange insertion layer is arranged on the top of the C-shaped layer and the intermediate insertion layer to form the upper flange of the I-shaped stringer together. The utility model can obtain a cementing area far larger than that of the traditional I-shaped stringer stiffened wall plate, increase the bearing capacity of the stringer and reduce the processing amount of the stringer; the detachable mould is adopted to support the C-shaped laying layer, so that the problem of demoulding of the I-shaped stringer made of the composite material is solved, and the stringer structure can be quickly prepared.

Description

I-shaped composite material long-purlin wallboard structure and forming die

Technical Field

The utility model relates to an aircraft combined material technical field, in particular to combined material "worker" type longpurlin wallboard structure and forming die.

Background

The composite material I-shaped long-purlin stiffened wallboard is widely applied to a main bearing structure of a fuselage, in particular to a wing surface wallboard structure. A common "i" stringer configuration is shown in fig. 1.

The main problem analysis of the conventional structural form is as follows:

1. compared with the T-shaped stringer wallboard, the I-shaped stringer wallboard has higher structural efficiency, and both the bending resistance and the stringer edge impact resistance are improved;

2. according to the structural design scheme of the existing I-shaped long-purlin wallboard, enough allowance needs to be reserved for an upper flange and a lower flange to meet the processing requirement of a manufacturing boundary;

3. the glue joint area allowance of the traditional I-shaped long-purlin reinforced wallboard is small, and the whole wallboard structure is influenced during degumming.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough that prior art is overcome to one of the purpose, provides a combined material "worker" type stringer wallboard structure and forming die, reduces the waste of raw and other materials, improves the lay efficiency, reduces frock preparation cost, improves the stringer bottom and spreads the layer and splice the quality with the covering, guarantees the quality and the precision of product.

The utility model adopts the following technical scheme:

an I-shaped long purlin wallboard structure made of composite materials comprises a C-shaped laying layer, a middle insertion layer, a flange insertion layer and a skin laying layer;

the C-shaped paving layers are laid on the skin paving layers in parallel side by side, the closed parts of the C-shaped paving layers are planar, and the closed parts are connected with the skin paving layers in a curing manner; gaps are reserved among 2 adjacent C-shaped layers, the intermediate insertion layer is arranged in the gaps, and the intermediate insertion layer is in solidification connection with the C-shaped layers and the skin layers; the flange insertion layer is arranged at the top of the C-shaped laying layer and the middle insertion layer to form an upper flange of the I-shaped stringer; and the flange intercalation layer is connected with the C-shaped layering and the top of the intermediate intercalation layer in a curing way.

Furthermore, an R-angle gap formed at the end part of the intermediate intercalation layer is filled with an R-angle filler.

Furthermore, the C-shaped layer, the middle insertion layer, the flange insertion layer and the skin layer are integrally solidified and molded by adopting a co-solidification or co-cementation process.

Furthermore, the C-shaped paving layers at the two ends of the stringer wallboard structure are semi-C-shaped.

A forming die of the composite material I-shaped stringer wallboard structure comprises:

the C-shaped layer laying forming tool is used for laying and forming C-shaped layers;

the flange tool is used for laying and forming an upper flange of the I-shaped stringer;

and the skin tool is used for laying the skin laying layer and realizing the curing connection between the C-shaped laying layer and the skin laying layer.

Further, the C-shaped layer forming tool comprises a detachable left stop block, a detachable right stop block, an upper stop block and a lower stop block;

the lower stop block is an inverted T-shaped block; the left stop block and the right stop block respectively comprise a body and a protruding part, and the left stop block and the right stop block are symmetrically supported on the flange surface of the lower stop block through the protruding parts; the upper stop block is arranged at the upper part of the lower stop block; the left stop block, the right stop block, the upper stop block and the lower stop block can be tightly attached to form a whole;

the C-shaped paving layer is preformed through the outer peripheries of the left stop block body, the upper stop block and the right stop block body.

Further, the flange tool and the skin tool are both of flat plate structures.

Furthermore, the upper stop block and the lower stop block are correspondingly provided with positioning mechanisms; the positioning mechanism is a groove and a raised head corresponding to the groove;

further, when the upper stop block is provided with the groove, the lower stop block is provided with the corresponding raised head;

further, when the lower stop block is provided with the groove, the upper stop block is provided with the corresponding raised head.

The utility model has the advantages that: the C-shaped ply and the skin ply are completely jointed, the gluing area which is far larger than that of the traditional I-shaped truss stiffened wallboard is obtained, the bearing capacity of the truss is increased, the processing amount of the truss is reduced, and the problem that the whole wallboard structure is influenced due to degumming of the truss is effectively avoided; the integral curing molding of the wall plate structure can be completed by adopting a co-curing or co-bonding process, so that the manufacturing efficiency is greatly improved, and the loss rate of the composite material is reduced; the detachable mould is adopted to support the C-shaped paving layer, so that the demoulding problem of the I-shaped stringer made of the composite material is solved, and the stringer structure can be quickly prepared; the utility model has simple and easy process and great popularization value.

Drawings

Fig. 1 is a schematic view showing a conventional "i" type stringer board structure.

Fig. 2 is a schematic structural view of an i-shaped composite stringer wallboard according to an embodiment of the present invention.

FIG. 3 is a schematic structural view of a C-shaped laying layer forming tool.

Fig. 4 is a schematic structural diagram of the second assembly.

Fig. 5 is a schematic structural diagram of the third assembly.

Figure 6 is a schematic drawing of the core form of the composite i-beam stringer panel structure.

Fig. 7 is a schematic structural view of the left stopper (right stopper).

In the figure: 1-a left stop block; 2-an upper stop block; 3-a right block; 4-a lower stop block; 5- "C" type layering; 6-intermediate intercalation; 7-R corner filler; 8-flange intercalation; 9-flange tooling; 10-skin ply; 11-covering a skin tool; 101-a body; 102-projections.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that technical features or combinations of technical features described in the following embodiments should not be considered as being isolated, and they may be combined with each other to achieve better technical effects.

As shown in fig. 2, an i-shaped composite stringer wallboard structure according to an embodiment of the present invention includes a plurality of C-shaped layers 5, an intermediate layer 6, a flange layer 8, and a skin layer 10; the C-shaped paving layers 5 are parallelly paved on the skin paving layer 10 side by side, the closed part of the C-shaped paving layers 5 is a plane, and the closed part is connected with the skin paving layer 10 in a curing way; gaps are reserved among 2 adjacent C-shaped layers 5, the intermediate insertion layer 6 is arranged in the gaps, and the bottom of the intermediate insertion layer 6 is connected with the skin layer 10 in a curing mode; the flange insertion layer 8 is arranged at the tops of the C-shaped laying layer 5 and the middle insertion layer 6 to form an upper flange of the I-shaped stringer together; and the flange intercalation layer 8 is connected with the C-shaped layering 5 and the top of the middle intercalation layer 6 in a curing way.

Preferably, the 'C' -shaped layer 5, the intermediate layer 6, the flange layer 8 and the skin layer 10 are integrally cured and molded by adopting a co-curing or co-cementing process.

The C-shaped paving layers 5 at two ends of the stringer wallboard structure are both half C-shaped (half or part of a complete C-shaped paving layer), and R-angle gaps at the end parts of the middle insertion layers 6 (formed together with the skin paving layer 10 and the C-shaped paving layers 5) are filled with R-angle fillers 7.

The embodiment of the utility model provides an automatic area of spreading of accessible or manual shop paste compares in the effective region that splices that has increased stringer and skin structure in original "worker" type stringer wallboard structural design scheme, when having increased the bearing capacity of stringer, has reduced the processingamount of stringer.

As shown in fig. 3, an embodiment of the present invention provides a forming mold for forming an i-shaped stringer wallboard structure of the above-mentioned composite material, including:

the C-shaped layer laying forming tool is used for laying and forming the C-shaped layer 5; preferably, the C-shaped layer forming tool comprises a detachable left stop block 1, a detachable right stop block 3, an upper stop block 2 and a lower stop block 4; the lower stop block 4 is an inverted T-shaped block; the left block 1 and the right block 3 both comprise a body 101 and a protrusion 102, as shown in fig. 7 (the body 101 is used for forming the C-shaped layer 5, and the protrusion 102 is used for paving and positioning the flange insert 8 and the flange tool 9), the left block 1 and the right block 3 are both symmetrically supported on the flange surface of the lower block 4 through the protrusion 102; the upper stop block 2 is arranged at the upper part of the lower stop block 4; the left stop block 1, the right stop block 3, the upper stop block 2 and the lower stop block 4 can be tightly attached to form a whole; the C-shaped paving layer 5 is preformed through the outer peripheries of the left block body, the upper block 2 and the right block body

The flange tool 9 is of a flat plate structure and is used for laying and forming an upper flange of the I-shaped stringer;

and the skin tool 11 is of a flat plate structure and is used for laying the skin laying layer 10 and realizing the curing connection of the C-shaped laying layer 5 and the skin laying layer 10.

Preferably, the upper stop block 2 and the lower stop block 4 are correspondingly provided with positioning mechanisms; the positioning mechanism is a groove and a raised head corresponding to the groove; when the upper stop block 2 is provided with the groove, the lower stop block 4 is provided with the corresponding raised head; or when the lower stop block 4 is provided with the groove, the upper stop block 2 is provided with the corresponding raised head.

The utility model provides a forming die has solved the drawing of patterns problem of combined material "worker" type stringer, can realize the preparation of stringer structure fast, has improved the fashioned production efficiency of stringer.

The utility model provides a forming method of long purlin wallboard structure of combined material "worker" type uses above-mentioned forming die, including following step:

s1, a left block 1, a right block 3, an upper block 2 and a lower block 4 jointly form a C-shaped paving layer forming tool which is used for paving and forming a single C-shaped paving layer 5 (and curing and forming after being integrally combined with a skin paving layer 10 in the later period); the matching structure between the left stop block 1 and the right stop block 3 and the lower stop block 4, and the matching structure between the upper stop block 2 and the lower stop block 4, the groove and the raised head ensure that the integral matching clearance of the combined forming tool meets the requirement; keeping the relative positions of the C-shaped laying layer 5 and the C-shaped laying layer forming tool unchanged, wherein the C-shaped laying layer 5 and the C-shaped laying layer forming tool form a first combination; as shown in fig. 3;

s2, placing a plurality of first assemblies in parallel side by side, arranging a middle insertion layer 6 between the adjacent C-shaped layers 5, and filling an R area by using twill strips to form a second assembly; the R area is a gap formed between the C-shaped paving layer 5 and the intermediate interlayer 6; then the second assembly is turned for 180 degrees (or a plurality of first assemblies are turned for 180 degrees at first, then an intermediate insertion layer 6 is arranged between the adjacent C-shaped laying layers 5 to obtain the second assembly); as shown in fig. 4;

s3, drawing the lower block 4 away, and keeping the relative positions of the left block 1, the right block 3, the upper block 2 and the C-shaped paving layer 5 unchanged; placing a flange intercalation layer 8 and a flange tool 9 according to the design to form a third combination; as shown in fig. 5;

s4, positioning the third combination body and the skin tool 11, then combining the third combination body with the skin paving layer 10, and completing integral co-curing molding after vacuum packaging, as also shown in FIG. 5;

aiming at the problem that the I-shaped stringer co-cured wallboard structure is difficult to demold, the application also designs a demolding process S5 for respectively removing the C-shaped layer laying forming tool shown in FIG. 6: when the C-shaped paving layer forming tool is dismantled, the upper stop block 2 is firstly dismantled, and then the left stop block 1 and the right stop block 3 are dismantled.

While several embodiments of the present invention have been presented herein, it will be appreciated by those skilled in the art that changes can be made to the embodiments herein without departing from the spirit of the invention. The above-described embodiments are merely exemplary and should not be taken as limiting the scope of the invention.

Claims

1. An I-shaped long purlin wallboard structure of composite materials is characterized by comprising a C-shaped laying layer, a middle insertion layer, a flange insertion layer and a skin laying layer;

the C-shaped paving layers are laid on the skin paving layers in parallel side by side, the closed parts of the C-shaped paving layers are planar, and the closed parts are connected with the skin paving layers in a curing manner; gaps are reserved among 2 adjacent C-shaped layers, the intermediate insertion layer is arranged in the gaps, and the intermediate insertion layer is in solidification connection with the C-shaped layers and the skin layers; the flange insertion layer is arranged at the top of the C-shaped laying layer and the middle insertion layer to form an upper flange of the I-shaped stringer; the flange intercalation layer is connected with the C-shaped layering and the top of the intermediate intercalation layer in a curing way; and an R-angle gap formed at the end part of the intermediate intercalation layer is filled with an R-angle filler.

2. The composite material I-shaped stringer wallboard structure of claim 1, wherein the C-shaped lay-up, the intermediate lay-up, the flange lay-up and the skin lay-up are integrally cured and formed by a co-curing or co-cementing process.

3. The composite material I-beam wall panel structure of claim 1, wherein the C-shaped plies at each end of the stringer wall panel structure are semi-C shaped.

4. A forming die for forming a composite material i-beam wall panel structure as claimed in any one of claims 1 to 3, comprising:

5. The forming die of claim 4, wherein the C-shaped layer forming tool comprises a left stop block, a right stop block, an upper stop block and a lower stop block which are detachable;

6. The molding die of claim 5, wherein the flange tooling and the skin tooling are both flat plate structures.

7. The forming die of claim 5, wherein the upper stop block and the lower stop block are correspondingly provided with positioning mechanisms; the positioning mechanism is a groove and a raised head corresponding to the groove.

8. The molding die of claim 7, wherein said upper stop defines said recess and said lower stop defines said corresponding projection.

9. The molding die of claim 7, wherein said lower stop defines said recess and said upper stop defines said corresponding projection.