Wing beam mold and wing beam preforming method and preparation method

A preforming and mold technology, applied in the fields of mechanical devices, transportation, and aviation equipment, can solve the problems of diaphragm breakage and single mold, and achieve the effect of controlling fiber buckling and wrinkles, compact structure, and reasonable design.

Pending Publication Date: 2018-09-28
BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a spar mold and a spar preforming method and preparation method. By setting the forming boss and a plurality of vacuum channels, the technical problem that the traditional mold can only be fixed and a single paving process is solved, so that The spar mold of the present invention can take into account the requirements of manual laying and diaphragm forming process for mold design, realize the technical effect of rapid adsorption molding through vacuum technology, and realize the diaphragm with the help of curing equipment without special diaphragm forming equipment. The effect of molding; by setting a cover plate above the vacuum channel and micro holes on the cover plate, the problem of diaphragm damage caused by excessive suction in the local area of ​​the vacuum channel is solved

Method used

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  • Wing beam mold and wing beam preforming method and preparation method
  • Wing beam mold and wing beam preforming method and preparation method
  • Wing beam mold and wing beam preforming method and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] figure 1 It is a top view of the spar mold provided by Embodiment 1 of the present invention.

[0041] figure 2 It is a schematic cross-sectional structure diagram of the spar mold provided by Embodiment 1 of the present invention.

[0042] image 3 It is a schematic exploded view of the structure of the spar mold provided by Embodiment 1 of the present invention.

[0043] Please refer to figure 1 , figure 2 and image 3 , Embodiment 1 of the present invention provides a spar mold, including: a mold body 1 , a forming boss 2 , two mold cavity grooves 3 and a plurality of vacuum channels 4 .

[0044] The mold body 1 is formed as a long strip with an upper opening.

[0045] The forming boss 2 is located in the middle of the mold body 1 and is formed as a boss extending along the length direction of the mold body 1 . The molding boss 2 and the upper surface of the mold body 1 are on the same height plane.

[0046] Two mold cavity grooves 3 are respectively formed...

Embodiment 2

[0069] Figure 7 It is a method flowchart of the spar preforming method provided by the second embodiment of the present invention.

[0070] Figure 8 It is a schematic diagram of the preforming process of the spar provided by the second embodiment of the present invention.

[0071] Please refer to Figure 7 , Embodiment 2 of the present invention provides a method for preforming a spar, comprising:

[0072] S1a, spraying a release agent or covering a layer of isolation film on the surface of the forming boss 2 .

[0073] S2a, according to the shape of the forming boss 2, laying multi-layer prepregs layer by layer on the forming boss 2 coated with a release agent, or laying on the isolation film, to obtain a preformed spar.

[0074] Specifically, for the laying process, please refer to Figure 8 , on the surface of the forming boss 2 of the spar mould, spread a layer of isolation film or spray a release agent. Lay several layers of composite material prepreg sequentially...

Embodiment 3

[0077] Figure 9 It is a method flowchart of the spar preforming method provided by the third implementation of the present invention;

[0078] Figure 10-Figure 11 It is a schematic diagram of the process of spar preforming provided by Embodiment 3 of the present invention;

[0079] Please refer to Figure 9 , Embodiment 3 of the present invention provides a method for preforming a spar, comprising:

[0080] S1b, laying the multi-layer prepreg layer by layer to obtain a prepreg flat plate 9;

[0081] Specifically, the prepreg can be laid layer by layer by manual laying or automatic tape laying to obtain the prepreg flat plate 9 .

[0082] S2b, placing the prepreg flat plate 9 between two layers of separators 8, or placing it in a vacuum bag.

[0083] S3b, vacuumize the membrane 8 or the vacuum bag, so that the membrane 8 or the vacuum bag holds the prepreg flat plate 9 .

[0084] S4b, placing the prepreg flat plate 9 on the forming boss 2 .

[0085] Specifically, such ...

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Abstract

The invention provides a wing beam mold. The wing beam mold comprises a mold body (1) forming a strip opened on the upper side a forming boss (2) forming a boss extending in the length direction of the mold body (1), two mold cavity grooves (3) formed in space between the forming boss (2) and two long edges of the mold body (1), and multiple vacuum channels (4) formed in the bottoms of the mold cavity grooves (3) and distributed in the length direction of the mold body (1) and communicating with a vacuumizing device. Through combined design of such structures as the forming boss and multiple vacuum channels, the wing beam mold solves single fixed pavement process mode in a traditional mode, realizes both manual pavement process and automatic pavement diaphragm heating formation, and achieves the technical effects of diaphragm formation and improvement of the practicability, the generality and the compatibility by dint of a hot pressing tank or an oven under the condition of no specialdiaphragm forming equipment.

Description

technical field [0001] The invention relates to mold design, belongs to the technical field of mechanical devices and transportation, in particular to the field of aviation equipment, and in particular to a spar mold, a spar preforming method and a preparation method. Background technique [0002] At this stage, there are three mainstream aircraft composite wing spar preparation processes in the world: manual laying, automatic tape heating and diaphragm forming, and automatic wire laying. Manual laying: It is usually necessary to design corresponding spar molds according to the structural form to meet the requirements of manual laying; automatic tape laying and heating diaphragm forming: usually it is necessary to design automatic tape laying flat tooling and spar forming molds, and it is also necessary to purchase special automatic tape laying and diaphragm forming equipment. [0003] For the above two types of different preparation processes, when using the automatic tape...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B29C70/34B29C70/54B29C33/42
CPCB29C33/42B29C70/342B29C70/54
Inventor谢汶轩高举斌肖志鹏孙见卓王栋刘传军
OwnerBEIJING AERONAUTIC SCI & TECH RES INST OF COMAC