Molding die of resin-based composite radome

Abstract

The invention relates to a molding die of a resin-based composite radome. The molding die comprises a male die, a female die, a bottom plate and a demolding ring; an inner circle edge opening of the demolding ring is matched with an outer circle edge opening of the male die in shape and size; the lower end of the female die is provided with a positioning ring piece, the upper end surface of the demolding ring is provided with a ring-shaped groove seat matched with the positioning ring piece in shape and size, and the female die can be clamped into the ring-shaped groove seat through the positioning ring piece; and the positioning ring piece is provided with a first demolding screw matched with a first demolding screw hole, the bottom plate is provided with a second demolding screw matched with a second demolding screw hole, the inner circle edge opening is a stepped hole, the stepped hole includes an upper hole opening and a lower hole opening, and the upper hole opening is of a horn mouth structure small in top and larger in bottom. The molding die has the following advantages that 1, the structure is simple, and demolding operation is convenient and quick; 2, a stress part of the demoulding process is designed reasonably, and protection of a main body part of a radome product is facilitated; 3, and the product yield rate is above 98%.

Description

technical field [0001] The invention relates to a molding die for a radome, in particular to a molding die for a resin-based composite material radome. Background technique [0002] In the prior art, a single mold (concave mold or convex mold) is generally used to make a radome, which is combined with a vacuum bag to pressurize and an oven to cure and shape. The mold structure of this process is simple and the cost is low, but wrinkles will appear on the surface of one side of the vacuum bag, affecting the surface quality, and the subsequent repair work is time-consuming and laborious. [0003] In order to obtain a radome with a high quality internal and external surface, the industry usually adopts a concave mold and a convex mold compression molding process. The cylindrical pot-bottom radome is processed by molding technology. The traditional molding mold adopts the following structure: including punch, die, bottom plate, and stripping ring; punch and bottom plate, concav...

AI Technical Summary

Problems solved by technology

The disadvantage of the above forming mold is: in the first step of separating the die, as the die is released, due to the strong adhesion between the product and the die, the product is often taken away from the punch by the die, which is not realized. Separation from die

This situation is difficult to deal with later, and improper handling often leads to product scrap

Using the above-mentioned forming mold, the demoulding is stuck, resulting in a product yield of about 65%, and its production cost is high.

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