Injection structure of polymer molding mold

Abstract

The injection structure of the molding mold for polymer articles provided by the present invention includes a first mold part and a second mold part spaced apart from each other, and a mold part between the first mold part and the second mold part The third mold part, and the supply position of the external raw material is located at the side of the first mold part away from the second mold part, and further, in order to supply the external raw material to the position between the second mold part and the third mold part In the mold chamber of the present invention, the injection structure further includes a passage provided on the first mold part, through which the external raw material can be directly passed through the third mold part from the supply position. The flow channel is injected into the mold chamber, and it is not necessary to make the external raw material flow through the first mold part and the third mold part in sequence before entering the mold chamber as in the known technology, so as to achieve the cost. purpose of the invention.

Description

technical field [0001] The present invention is related to the technology of polymer molding and molding, in particular to a material injection structure of a molding die for polymer articles. Background technique [0002] The mold used in the polymer molding processing technology forms a mold chamber space inside the mold, so that the polymer raw material is molded in the mold chamber to form an item of a specific shape, and among them, the polymer raw material is formed. Filling in the mold chamber, known technologies have disclosed different feeding technologies such as mold opening filler and mold closing injection. The former will open the mold to open the mold chamber, so that the polymer raw material can be directly placed in the open mold chamber. , the latter closes the mold, and when the mold chamber is closed, the flow path for the hot melt polymer raw material is formed through the preset flow channel on the mold, so that the polymer raw material can be passed fr...

AI Technical Summary

Problems solved by technology

[0004] In the multi-layer mold disclosed by a plurality of mold sheets stacked together in the Chinese Taiwan No. M485818 patent, mold chambers of appropriate shape are usually defined between adjacent mold sheets. Therefore, in order to make the upper supply The raw material can flow down into the lowermost mold chamber space. In the known technology, perforations are respectively provided on each die, and the perforations on each die are aligned coaxially with other preset perforations when the mold is closed. In series, it becomes a flow channel for the raw material to flow down into the mold chamber space; although this technology has been widely used in polymer molding processing technology, but because it divides the single flow channel On different dies, in addition to causing difficulty in processing, it is also difficult to ensure the tightness between the butt perforations when different dies are stacked, so it is easy to produce seepage of raw materials. Obviously, this known technology has not yet reached Complete

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