Honeycomb Sandwich Part Pre-filling and Forming Tooling and Its Process Method

A technology for forming tooling and honeycomb cores, applied in chemical instruments and methods, lamination devices, lamination auxiliary operations, etc., can solve the problems of unusable honeycomb cores, warping and deformation of honeycomb cores, and difficulty in accurate positioning of potting.

Inactive Publication Date: 2011-12-14
SHENYANG AIRCRAFT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Considering the self-weight of the honeycomb sandwich components, the weight of the components should be reduced as much as possible. The mechanical connection area of ​​the honeycomb sandwich components should be as small as possible. Therefore, it is difficult to accurately position the potting, and the honeycomb core is stressed in the

Method used

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  • Honeycomb Sandwich Part Pre-filling and Forming Tooling and Its Process Method
  • Honeycomb Sandwich Part Pre-filling and Forming Tooling and Its Process Method

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Embodiment Construction

[0017] A honeycomb sandwich part pre-filling molding tooling, including a honeycomb core 2 and a potting material 10, a mold 1 is provided below the honeycomb core 2, the mold 1 and the honeycomb core 2 are connected by positioning pins 6, and the honeycomb core 2 There are retaining strips 5 all around, and the retaining strips 5 are used to prevent the extrusion of the side of the honeycomb core during vacuuming; a potting model 9 is provided on the upper part of the honeycomb core potting area 3, and is positioned and connected by positioning pins 6, and the potting The gap of the potting material 10 is left in the template 9 to ensure that the potting material 10 accurately enters the designated potting area of ​​the honeycomb core. 13 to ensure that under vacuum pressure, the potting compound 10 moves downward evenly, and an isolation film 8 is provided on the upper surface of the overall structure. A vacuum bag 7 is provided on the upper surface of the isolation film 8, a...

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Abstract

The invention relates to a honeycomb sandwich piece pre-encapsulation molding tool, which comprises a honeycomb core and an encapsulation material, wherein a mold is arranged below the honeycomb core and is connected with the honeycomb core through positioning pins; baffle strips are arranged at the periphery of the honeycomb core; an encapsulation sample plate is arranged on the upper part of a honeycomb core encapsulation area and is connected in a positioning way through the positioning pins; a notch for accommodating the encapsulation material is reserved in the encapsulation sample plate; the encapsulation material is arranged in the notch; a pressure plate is arranged on the encapsulation material; an insulation membrane is arranged on the upper surface of an integral structure; a vacuum bag is arranged on the upper surface of the insulation membrane; the periphery of the vacuum bag passes through a sealing rubber strip; a venting felt is arranged on the lower surface at one endof the vacuum bag and in the sealing rubber strip; and a vacuum nozzle is arranged on the upper side corresponding to the venting felt. By the process method, encapsulation positions are accurate; simultaneously, vacuum is used for auxiliary pressurization, so that uniform downward pressure is applied onto all the encapsulation positions, and the phenomenon of stress deformation of a cured honeycomb core caused by non-uniform honeycomb stress is prevented.

Description

technical field [0001] The invention relates to a honeycomb sandwich part pre-filling molding tooling and a process method thereof, which are used in the molding process of a composite material honeycomb sandwich part and belong to the field of structure and molding. Background technique [0002] The composite honeycomb sandwich structure is composed of high-strength composite skin and lightweight core material. Due to the small weight of the core material, the sandwich component made of it can greatly reduce the weight of the structure under the same load-bearing capacity. Among them, the honeycomb core is light in material, high in strength and high in rigidity. It is often used in parts with large component size and high strength requirements. However, the shear resistance of the mechanical connection part of the honeycomb sandwich part is mainly borne by the composite material skin on the surface. The performance of the component can be improved by filling the potting co...

Claims

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Application Information

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IPC IPC(8): B32B3/12B32B37/10B32B38/00
Inventor 马秘辉王昭君刘海涛
Owner SHENYANG AIRCRAFT CORP
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