Stamping cutting die

Abstract

The invention relates to a punching cutting die, which is assembled on a punching machine board and is used for cutting excess materials of a plastic or metal film which can be used for injection molding in a mold. The punching cutting die is provided with a punching cutter edge and a plurality of dentiform structures which are arranged along the punching cutter edge. The dentiform structures can be square, triangular or trapezoidal. The parts of the punching cutting die contacted with the film are designed into the arranged dentiform structures to reduce the contact area with the film in the process of punching so as to reduce the probability of white edge, and the film appearance can be free from being influenced.

Description

technical field

[0001] The invention relates to a stamping knife die, in particular to a stamping knife die which can be installed on a stamping machine table for cutting the remaining material of a plastic or metal film to be injected into the mold. Background technique

[0002] Before the known film used for in-mold injection molding is put into the injection molding mold, it is necessary to use a punching machine to remove the excess material around the film, and then put the film into the mold for injection molding.

[0003] see figure 1 , figure 2 as shown, figure 1 It is a schematic diagram of the existing known film stamping process to remove the surrounding material, figure 2 so figure 1 Schematic diagram of existing known stamping dies that are easy to produce white edges on thin films. Such as figure 1 As shown, for example, take the stamping machine (not shown) equipped with a frame-shaped stamping die 1 as an example, when the film 100 is punched, the fil...

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