Heat-shrinkable mandrel airbag and its manufacturing process and application method

A manufacturing process and heat-shrinkable technology, applied in the field of heat-shrinkable mandrel airbags, can solve the problems of demanding molding conditions and difficult to achieve, and achieve the effects of avoiding structural deformation of the mandrel, facilitating stress transfer, and convenient laying

Active Publication Date: 2022-01-04
CHANGSHA KENREACH POLYMER MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the molding conditions of hollow airbags exceeding 10 meters are very strict and difficult to meet

Method used

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  • Heat-shrinkable mandrel airbag and its manufacturing process and application method
  • Heat-shrinkable mandrel airbag and its manufacturing process and application method
  • Heat-shrinkable mandrel airbag and its manufacturing process and application method

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0038] Please also see figure 1 and figure 2 , respectively are the production process flow chart and structural diagram of the core mold set in the manufacturing process of the heat-shrinkable mandrel airbag provided by the present invention.

[0039] The manufacturing process of heat-shrinkable mandrel airbag specifically comprises the following steps:

[0040] S1: Manufacture the inflation enhancement kit 2, including the gas nozzle 21 and the connecting rod 22.

[0041] Wherein said gas nozzle 21 is copper gas nozzle, adopts hexagonal brass tube to process, and carries out surface treatment before use, to increase the adhesion with the air bag. The connecting...

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Abstract

The invention provides a heat-shrinkable mandrel airbag, a manufacturing process and a using method thereof. The heat-shrinkable mandrel airbag includes a mandrel made of heat-shrinkable material, an airbag wrapped outside the mandrel, and an inflatable reinforcement set inside the mandrel and penetrating to the outside of the airbag. The manufacturing process of the heat-shrinkable mandrel airbag includes the steps of manufacturing the inflation reinforcement kit, manufacturing the mandrel, assembling, and manufacturing the airbag. The method for using the heat-shrinkable mandrel airbag includes the steps of laying composite materials, pressurizing and curing at high temperature, and demolding. The heat-shrinkable mandrel airbag and its manufacturing process and use method provided by the invention solve the technical problem that the mandrel used for the production of hollow composite material structures in the prior art cannot meet the use requirements.

Description

technical field [0001] The invention relates to the field of composite material profile manufacture, in particular to a heat-shrinkable mandrel airbag and its manufacturing process and use method. Background technique [0002] At present, in the molding of composite materials, occasions that require weight reduction are often encountered, and hollow composite material structures become the best choice for composite material structure design in this case. The hollow structural design of the composite material requires a mandrel with high rigidity at room temperature for laying the composite prepreg, and the mandrel needs to be easy to remove from it after the composite material is formed. In consideration of the overall strength of the composite material, we also hope that the composite material can be as compact as possible, which requires the core mold to provide an outward pressure during the molding of the composite material (this pressure is usually 0.1MPa-4MPa between)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/38B29C33/76B29C70/32
CPCB29C33/3842B29C33/76B29C70/32
Inventor 成鹰何斌汤丽春肖岚潘敏雷博文黄磊曾勇陈仕贤
Owner CHANGSHA KENREACH POLYMER MATERIALS
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