Multi-step continuous resin transfer molding method for rail vehicle composite components

A composite material component and resin transfer molding technology, which is used in the design and manufacture of resin-based fiber reinforced composite products to achieve the effects of shortening the resin flow length, shortening the curing time, and preventing air bubbles or dry spots.

Active Publication Date: 2017-03-15
吉林大学重庆研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the shortcomings of the existing resin-based fiber-reinforced composite material RTM molding method, the present invention provides a high-quality, low-cost molding method suitable for rail vehicles with large curved surfaces or long-length special-shaped cross-section shell members

Method used

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  • Multi-step continuous resin transfer molding method for rail vehicle composite components

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Embodiment Construction

[0024] Such as figure 1 As shown, a multi-step continuous RTM molding method consists of an upper mold 1, a lower mold 2, a clamping and locking mechanism 3, two sets of movable electric heating tube arrays 4, several resin filling pipe joints 5, several pumping It consists of a vacuum joint 6 and a molding parameter control system 7. Wherein, the upper mold 1, the lower mold 2, and the clamping and locking mechanism 3 jointly constitute the molding mold for multi-step continuous RTM molding; the two groups of movable electric heating tube arrays 4 are installed on the platform of the mobile trolley 8, Placed under the lower mold 2 during work, it is used to heat the lower mold 2 to solidify the resin injected into the cavity of the mold. The moving speed and platform height of the mobile trolley 8 are set by the molding parameter control system 7; The control of the heating range of the designated area of ​​the lower die 2 is achieved by adjusting the height of the platform ...

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Abstract

Provided is a multi-step continuous resin transfer molding method of rail vehicle composite material member, wherein the multi-step continuous resin transfer molding method of rail vehicle composite material member consists of an upper die, a lower die, a die assembly locking mechanism, two groups of movable electric heating tube arrays, a plurality of resin injection tube joints, a plurality of vacuumizing joints, and a molding parameter control system. The upper die, the lower die and the die assembly locking mechanism concurrently form a forming die of the multi-step continuous RTM forming; the two groups of movable electric heating tube arrays are mounted on a platform of a movable trolley; and the two groups of movable electric heating tube arrays are placed below the lower die for heating the lower die and solidifying the resin which is injected inside a cavity of the forming die; the moving speed of the movable trolley and the height of the platform are both set by the molding parameter control system.

Description

technical field [0001] The invention relates to a method for resin transfer molding (hereinafter referred to as RTM molding) of rail vehicle composite material components, especially for rail vehicle interior and exterior large curved side panels or shell components, belonging to resin-based fiber-reinforced composite material products field of design and manufacture. Background technique [0002] Components made of composite materials are light in weight, high in strength, and high in rigidity, which play an important role in reducing the weight of the carriage, reducing noise, vibration, improving safety, comfort, and reducing maintenance. It has become an ideal structural component for high-speed rail transit . [0003] At present, the common production methods of resin-based fiber-reinforced composites mainly include hand lay-up molding, RTM molding, and SMC molding. Hand lay-up is not only low in production efficiency and difficult to control product quality, but also...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/48B29C70/54
CPCB29C70/48B29C70/54
Inventor 李义梁继才于开锋梁策
Owner 吉林大学重庆研究院
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