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Pultrusion pre-forming structure and mold and manufacturing method thereof

A technology of pultrusion and manufacturing method, applied in the field of pultrusion preform structure and its mold and its manufacturing, to achieve the effect of short and efficient operation, simple and reasonable setting, and strong integration

Pending Publication Date: 2022-02-18
NO 33 RES INST OF CHINA ELECTRONICS TECHNOOGY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the above-mentioned prior art can adapt to the preform design with reinforced fiber cloth as the main pultrusion reinforcement material

Method used

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  • Pultrusion pre-forming structure and mold and manufacturing method thereof
  • Pultrusion pre-forming structure and mold and manufacturing method thereof
  • Pultrusion pre-forming structure and mold and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as Figure 1 to Figure 3 As shown, a pultrusion preformed structure includes a hollow guide plate 1. The hollow guide plate 1 is first spliced ​​by equal-thickness plastic sheets to form a hollow structure, which is edge-sealed with an adhesive or a plastic sealing machine, and then hollowed out by a molding die. The structure is bent into the hollow guide plate 1 of the desired shape; the hollow guide plate 1 is provided with a cavity 6 with two ends open, one end of the cavity 6 is opened as a horizontal opening 11, and the horizontal opening 11 is a product unfolded shape, and the other end The opening is an arc-shaped opening 12, the arc-shaped opening 12 is the shape of the die mouth of the pultrusion mold, the length of the hollow guide plate 1 is greater than or equal to 5 times the length of the horizontal opening 11, and the distance between the horizontal opening 11 and the arc-shaped opening 12 of the cavity 6 is smooth and continuous transition.

[003...

Embodiment 2

[0040] Such as Figure 4 As shown, in order to improve the preforming efficiency, the hollow guide plates 1 are provided with a plurality of nested sizes, and the adjacent hollow guide plates 1 are filled with supporting materials 2 and fixed to each other, so that multiple fiber cloths can be preformed at the same time. forming.

Embodiment 3

[0042] Such as Figure 5 As shown, a mold of a pultrusion preformed structure comprises a mold upper template 3 and a mold lower template 4, a molding cavity 5 is formed between the mold upper template 3 and the mold lower template 4, and the molding cavity 5 structure is the same as The shape and structure of the hollow guide plates 1 are the same, and the preformed structure is bent and formed by preforming.

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Abstract

The invention relates to the technical field of composite material manufacturing processes, in particular to a pultrusion pre-forming structure and a mold and a manufacturing method thereof. The pultrusion pre-forming structure comprises a hollow guide plate, the hollow guide plate is provided with a cavity with openings in the two ends, the opening in one end of the cavity is a horizontal opening, and the opening in the other end of the cavity is an arc-shaped opening; the horizontal opening is in the shape of an unfolded product, the arc-shaped opening is in the shape of a mold opening of a pultrusion mold, the inner portion of the cavity is equal in height, and the horizontal opening and the arc-shaped opening of the cavity are in smooth and continuous transition. Continuous transition of the fiber cloth can be achieved, the problems of wrinkles, pocket beating, deviation and the like of a preformed part in the traction process are reduced as much as possible, the workload of manual deviation correction in the pultrusion process is reduced, and the stability of the whole technological process is guaranteed.

Description

technical field [0001] The invention relates to the technical field of composite material manufacturing technology, and more specifically, relates to a pultrusion preformed structure, a die and a manufacturing method thereof. Background technique [0002] As one of the main preparation processes in the manufacturing process of composite materials, the pultrusion process has the characteristics of high degree of automation and good product consistency, and its share in the field of composite materials is increasing. In the process of pultrusion, the design of pultrusion mold and preform tooling is an important part of the whole process. The design and processing of mold and preform will directly determine the efficiency of pultrusion production, and even success or failure. , At the same time, it also determines the appearance and quality of pultruded products. Moreover, the preforming structure also determines whether the product dimensions and the process can be carried ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/52B29C33/40
CPCB29C70/525B29C33/40B29C33/3842
Inventor 王富强边永亮郇峰张少波李伟
Owner NO 33 RES INST OF CHINA ELECTRONICS TECHNOOGY GRP