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Frame-type composite flow channel forming mold for autoclave and forming method

A composite material and molding die technology, applied in the field of composite material molding, can solve problems such as affecting the molding quality of composite material parts, uneven heating of composite material components, and inconsistent curing degree.

Active Publication Date: 2021-03-19
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The uneven temperature field will affect the molding quality of composite parts to a large extent, resulting in uneven heating of composite parts and inconsistent curing degrees, causing deformation

Method used

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  • Frame-type composite flow channel forming mold for autoclave and forming method
  • Frame-type composite flow channel forming mold for autoclave and forming method
  • Frame-type composite flow channel forming mold for autoclave and forming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment is a frame-type composite material flow channel forming mold for autoclave, such as Figure 2-Figure 4 As shown, it includes a frame-type base and a molding plate fixed on the base (not shown in the figure), the base is composed of a plurality of cross-connected transverse support plates 10 and longitudinal support plates 11, and the transverse support plates 10 A number of heat dissipation holes 12 are provided on the horizontal support plate 10 and the longitudinal support plate 11; movable baffles 1 corresponding to the heat dissipation holes 12 and used to open and close the heat dissipation holes 12 are provided on the transverse support plate 10 and the longitudinal support plate 11. Such as figure 2 As shown, the transverse support plate 10 refers to the support plate perpendicular to the fluid flow direction, and the longitudinal support plate 11 refers to the support plate parallel to the fluid flow direction.

[0030] preferred, such as fig...

Embodiment 2

[0032] This embodiment is a composite material molding method using the molding die of Embodiment 1. In this method, different preset air flow channel forms are formed in the molding die by controlling the movable baffle to open and close the cooling holes or adjusting the opening size of the cooling holes. ; When the composite material is formed, all the movable baffles are retracted in the heat preservation stage to completely open all the cooling holes, and different preset air flow channels are used in the heating stage and cooling stage.

[0033] Preferably, in the heating stage of this embodiment, the frame-type base opens all cooling holes at the windward end, and only opens the middle cooling holes at the leeward end, so that the air flow channel is adjusted to a T-shaped flow channel form; , the frame-type base only opens the middle heat dissipation hole at the windward end, and opens all the heat dissipation holes at the leeward end, so that the air flow channel is ad...

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PUM

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Abstract

The invention relates to a frame-type composite material variable flow channel molding mold for autoclave tanks and a molding method. The mold includes a frame-type base and a molding plate fixed on the base. The base is composed of a plurality of transverse support plates that are cross-connected to each other. The transverse support plate and the longitudinal support plate are provided with a number of heat dissipation holes; the transverse support plate and the longitudinal support plate are provided with a one-to-one correspondence with the heat dissipation holes and used to open and close the heat dissipation holes. Movable baffle. The method of use is: by controlling the movable baffles to open and close the heat dissipation holes or adjusting the opening size of the heat dissipation holes to form different preset air flow channel forms in the molding mold; when molding composite materials, all the movable baffles are folded during the heat preservation stage. Thus, all heat dissipation holes are completely opened, and different preset air flow channel forms are used during the heating stage and cooling stage. The invention can make the temperature field distribution of the mold molding surface uniform during composite material molding.

Description

technical field [0001] The invention relates to a frame-type composite material variable flow channel forming mold for an autoclave and a forming method, belonging to the technical field of composite material forming. Background technique [0002] With the continuous development and application of composite materials, because of their significant advantages such as high specific strength, high specific modulus, fatigue resistance, and corrosion resistance, they are more and more used in the aerospace field. The autoclave forming method is one of the main methods for forming composite parts. When the autoclave is formed, the prepreg is cut into the corresponding shape according to the design requirements, and laid on the forming mold according to the designed direction. Materials including release fabrics, adhesive materials, etc. are laid and pasted, and the laid composite material blank is vacuumed. After being evacuated, the whole is put into the autoclave according to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/04B29C70/34B29C70/54
CPCB29C33/046B29C70/342B29C70/54B29C33/307
Inventor 花蕾蕾安鲁陵岳烜德于守鑫韩宁高国强
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS