Convex hull punching and shaping die

Abstract

The invention provides a convex hull punching and shaping die. The convex hull punching and shaping die comprises a mechanism base, a punching and shaping insert and a pre-punching punch, wherein a car roof cover is placed on the top of the mechanism base; a fixed die for clamping and limiting the position of the car roof cover is arranged above the mechanism base; the pre-punching punch for punching a hole is arranged on the fixed die; the punching and shaping insert capable of moving up and down is arranged in the mechanism base; and the pre-punching punch moves downwards for punching while the punching and shaping insert moves upwards. The convex hull punching and shaping die has the advantages that a convex hull is not formed through drawing, a piece of waste is pre-punched at the position at which the antenna convex hull is to be generated through the mechanism, then the convex hull is formed through jacking, and after the convex hull is formed, redundant waste at the inner side of the convex hull is punched in place; and materials are borrowed from a waste material area at the inner side of the antenna convex hull of a car roof and used for forming the convex hull of the car roof, and uniform thickness of the materials of the car roof around the convex hull is ensured, therefore, the overall rigidity of the area of the car roof is guaranteed.

Description

technical field [0001] The invention relates to the technical field of moulds, in particular to a convex hull punching and shaping mold. Background technique [0002] The traditional solution is to first form the convex hull in the drawing sequence, and then flush out the waste material of the convex hull in the subsequent sequence; the convex hull forming of the antenna hole needs to borrow materials from the surroundings, resulting in different degrees of thinning of the surrounding areas, which further leads to the roof area If the rigidity becomes weaker, the direct performance is that this area of ​​the roof collapses, which affects the theoretical wind resistance streamline of the roof. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the invention provides a convex hull punching and shaping mold. [0004] The present invention realizes solving above-mentioned technical problem by following technical means: [0005] Convex shell punch...

AI Technical Summary

Problems solved by technology

[0002] The traditional solution is to first form the convex hull in the drawing sequence, and then flush out the waste material of the convex hull in the subsequent sequence; the convex hull molding of the antenna hole needs to be borrowed from the surroundings, resulting in different degrees of thinning around the surrounding area, which further leads to the roof area Rigidity becomes weak, the direct performance is that this area of ​​the roof collapses, which affects the theoretical wind resistance streamline of the roof

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