Stamping die for machining EVA and steel plate composite material

Abstract

The invention provides a stamping die for machining an EVA and steel plate composite material. The stamping die comprises a bottom plate, a die body is mounted on the bottom plate, a punch is arranged right above the die body, a connecting plate is arranged above the punch, the lower part of the connecting plate is connected with the bottom plate through a connecting mechanism, the lower part of the connecting plate is fixedly connected with the punch, a lower punching cavity is formed in the position, below the punch, of the die body, an upper punching cavity is formed in the position, above the lower punching cavity, of the punch, two sides of the lower punching cavity are each provided with a lower shearing opening structure on the die body, and two sides of the interior of the upper punching cavity are each provided with an upper shearing opening structure in the punch. According to the stamping die for machining the EVA and steel plate composite material, the lower shearing opening structures are additionally arranged on the die body and the upper shearing opening structures are arranged on the punch for matching, so that a traditional flat punch form is changed, then the shear force of the punch is increased when the material is machine, meanwhile, the sheared material is smoother, burrs and iron leakage phenomena are reduced, and the reject ratio is reduced.

Description

technical field [0001] The invention relates to the technical field of molds, in particular to a stamping mold for processing EVA and steel plate composite materials. Background technique [0002] Stamping die is a special process equipment for processing materials into parts in cold stamping processing. It is called cold stamping die, while stamping is to use a die installed on a press to apply pressure to the material at room temperature to make it. A press working method that produces separation or plastic deformation to obtain the desired part; [0003] The existing composite material of EVA and screen plate is formed by stamping, so it needs to be assisted by stamping dies. However, due to the good plasticity and high tensile strength of EVA material, the existing flat-mouth dies are used for stamping. The shear force of the concave and convex die is insufficient, and then during the stamping production, burrs will appear in the product, and the fracture zone of the pr...

AI Technical Summary

Problems solved by technology

[0003] The existing composite material of EVA and screen plate is formed by stamping, so it needs to be assisted by a stamping die. However, due to the good plasticity and high tensile strength of the EVA material, when the existing flat die is punched, The shearing force of the concave and convex die is insufficient, and then when the stamping production is carried out, the product will have burrs, and the fracture zone of the product accounts for a large proportion, which is easy to rust, resulting in low quality of the finished product. Therefore, the present invention proposes a kind of EVA and steel plate Stamping dies for composite material processing to solve problems in the prior art

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