Low-cost large polygon shell structure antenna housing mold and manufacturing method thereof

Abstract

The low-cost large antenna housing mold with the polygonal shell structure comprises three layers, wherein the inner layer is a foam layer, the middle layer is a glass fiber reinforced plastic layer, and the outer layer is a steel plate layer and a polytetrafluoroethylene adhesive tape; the foam layer is formed by bonding and splicing a plurality of sub-structures; the glass fiber reinforced plastic layer is formed by soaking multiple layers of fiber cloth between the foam layer and the steel plate layer with resin; the steel plate layer is formed by splicing a plurality of polygonal steel plates; the tetrafluoroethylene adhesive tape layer is a single-sided adhesive tape, and the adhesive surface is adhered to the surface of the steel plate layer; the thickness of the glass fiber reinforced plastic layer ranges from 1.5 mm to 2.5 mm. The thickness of the steel plate layer ranges from 3 mm to 5 mm. According to the antenna housing mold, on the basis of laying, resin is guided into the space between the foam layer and the steel plate layer through the vacuum guide-in technology for integral forming.

Description

technical field [0001] The present invention generally relates to the design of a composite material forming mold, and in particular relates to a low-cost large-scale polygonal shell structure radome mold and a manufacturing method thereof. Background technique [0002] As a functional composite material, the composite radome is widely used in the national defense industry due to its excellent mechanical properties, electrical properties, process performance, and strong product designability. The radome is made of composite materials. [0003] The scientific research work on radomes is also increasing day by day, and there is an increasing demand for the preparation of radomes for R&D purposes. In the forming of the radome, mold preparation is one of the prerequisites. Most of the mold preparations in the current technology are ordinary steel molds or FRP molds made by traditional techniques. [0004] Ship-borne and ship-borne radomes are mostly large spherical structures ...

AI Technical Summary

Problems solved by technology

[0004] Shipborne and shipborne radomes are mostly large spherical structures with large structural dimensions, generally with a diameter of more than 2m. Since the radome designed for R&D projects is generally a one-time product, the proportion of mold costs to R&D costs is too high

[0005] The molds made of ordinary steel are accurate in size, but for large components, combined molds are often used, and the assembly and matching of the molds are easy to be misaligned, resulting in dimensional errors. At the same time, the cost of raw materials and processing is high, and the cost is very high. Heavy, difficult and dangerous to demould; the traditional method of making glass fiber reinforced plastic molds is difficult to make and requires high technology. First, a master mold is formed with hand-laid wood resin, and the master mold is machined to the required size. Turn over the mold on the basis of the master mold to produce the required glass fiber reinforced plastic mold, which takes a long time to make the mold, generally takes about one or two months, and the surface of the produced glass fiber reinforced plastic mold is likely to have pores, which affects the molding quality of the product, and this large-scale The CNC milling machine required for the master mold processing of the mold has high requirements and high processing costs

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