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Fiber winding auxiliary tool and winding forming method

An auxiliary tooling and fiber technology, which is applied in the field of composite material forming, can solve the problems such as difficult to eliminate the axial compression stress of the wound mandrel, and achieve the effect of avoiding axial stress and ensuring coaxiality

Active Publication Date: 2019-01-11
HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the embodiments of the present invention is to provide a filament winding auxiliary tooling and winding molding method, which solves the problem in the prior art that it is difficult to eliminate the axial compression stress of the wound mandrel by the equipment during the filament winding process

Method used

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  • Fiber winding auxiliary tool and winding forming method
  • Fiber winding auxiliary tool and winding forming method
  • Fiber winding auxiliary tool and winding forming method

Examples

Experimental program
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Effect test

no. 1 example

[0045] Please refer to figure 1 , the present embodiment provides a filament winding auxiliary tooling 10, including: an equipment support 11, a first mandrel 12 and a second mandrel 13 that are rotatably mounted on the equipment support 11, and a Limiting support seat 14.

[0046] The equipment support 11 is used for installing the first mandrel 12 and the second mandrel 13 .

[0047] The equipment support 11 may include two pillars 111 for mounting the first mandrel 12 and the second mandrel 13 respectively. A chuck 121 can be set at the position where the first mandrel 12 is installed on the equipment support 11, and the first mandrel 12 is fixed by the chuck 121, so that the first mandrel 12 and the pillar 111 of the equipment support 11 can be rigid Fixed to avoid offset during rotation.

[0048] The first mandrel 12 and the second mandrel 13 are used to rotate and fix the mandrel 200 for fiber winding.

[0049] The first mandrel 12 and the second mandrel 13 are arran...

no. 2 example

[0060] Please refer to Figure 9 , the present invention also provides a winding forming method, which is applied to the auxiliary filament winding tooling of the first embodiment. The mandrel in this embodiment is mainly of large size, with a built-in diaphragm (not penetrated in the middle), and a diameter of φ500mm~ φ1000mm, thin-walled liner with a wall thickness of 0.8mm to 1.5mm, the material of the liner is aluminum alloy, steel or titanium alloy and other metal materials. The auxiliary tooling for filament winding in the present invention can be applied to the mandrel with this characteristic.

[0061] The method includes:

[0062] Step S10: installing the core mold on the core mold installation position.

[0063] In step S10, the specific installation method is: adjust the screw in the waist-shaped hole on the limit support seat to loosen it, place the mandrel between the first mandrel and the second mandrel, and connect it with the first mandrel The shaft and the ...

Embodiment approach

[0072] Specifically, in step S50, the mandrel that has been gelled under preset temperature conditions can be heated to a medium temperature condition, for example, heated to 80°C-100°C for curing, for example, heated in an oven. In this embodiment, two heat-curing implementations are provided: the first one is to transfer the gelled mandrel to an oven for heating and curing, and then process and shape it. The post-curing process does not need to be rotated. The second method is to install a rotary curing device in the oven, and then transfer and install the mandrel that has been gelled on the rotary curing device, and heat and cure it while rotating, so as to ensure the external quality of the product.

[0073] In this embodiment, the resin matrix used for the gel in step S40 and step S50 has the characteristics of gelling under low temperature conditions (35° C.) and curing under medium and low temperature conditions (below 100° C.); such as an aluminum alloy core with a diam...

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Abstract

The embodiment of the invention provides a fiber winding auxiliary tool and a winding forming method. The tool comprises an equipment support, a first mandrel, a second mandrel and a limiting supporting base. The first mandrel and the second mandrel are rotationally mounted on the equipment support. The limiting supporting base is mounted on the equipment support. The first mandrel and the secondmandrel are oppositely arranged, the second mandrel and the equipment support are movably mounted, and a core mold mounting position for mounting a core mold for fiber winding is reserved between thefirst mandrel and the second mandrel. The limiting supporting base is supported on the second mandrel and used for axially limiting the second mandrel, and the coaxiality of the first mandrel and thesecond mandrel is guaranteed. The problem that in the prior art, axial pressurizing stress, borne by the wound core mold, of equipment is difficult to eliminate in the fiber winding process is solved.

Description

technical field [0001] The invention relates to the field of composite material forming, in particular to a fiber winding auxiliary tooling and a winding forming method. Background technique [0002] The winding molding process is to wind the continuous fiber (or cloth tape, prepreg yarn) impregnated with resin glue on the mandrel according to certain rules, and then solidify and demould to obtain the product. Some types of products mainly use fiber winding process to form carbon fiber composite layer outside the large-sized thin-walled inner tank (mandrel), and after curing, a large-sized thin-walled inner tank pressure vessel is required to meet certain fatigue and blasting internal pressure need. [0003] However, for this type of product involving large size, inner diaphragm, thin-walled structure, etc., when winding the mandrel with fibers, it is easy to cause the mandrel to be affected by factors such as its own weight and equipment pressurized stress, resulting in sa...

Claims

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Application Information

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IPC IPC(8): B29C70/38B29C70/54B29C33/76
CPCB29C33/76B29C70/384B29C70/54
Inventor 朱君费久灿宋美茜常征杨戈沈亚东
Owner HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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