A plastic injection mold

Abstract

The invention discloses a plastic injection mold, and relates to the technical field of injection molding. A rear formwork bottom plate is included. A rear formwork on the rear formwork bottom plate is detachably connected with a front formwork on a front formwork bottom plate. A cavity for mold injection molding is formed by a rear mold core formed by the upper portion of the rear formwork and afront mold core formed at the lower portion of the front formwork. Each exhaust assembly comprises a pipe cavity, wherein one end of the pipe cavity communicates with the cavity, the other end of thepipe cavity upwards extends out of the top face of the front formwork bottom plate, meanwhile, the pipe cavity is internally provided with a matched exhaust pipeline, and one end of the exhaust pipeline communicates with the cavity and is provided with a ventilation micro hole ring. According to the plastic injection mold, surplus air in the cavity is exhausted in time, accordingly, the phenomenonof air hole generation in the injection molding process is avoided, and the mold injection molding effect is improved; and an activated carbon adsorption plate can be utilized for adsorbing harmful molecules contained in hot melting plastic raw materials, and accordingly the body health of workers is facilitated while exhausting is guaranteed.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to a plastic injection mold. Background technique [0002] The injection mold consists of a moving mold and a fixed mold. The moving mold is installed on the movable template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. During injection molding, the movable mold and the fixed mold are closed to form the gating system and the cavity, and the movable mold and the fixed mold are separated to take out the plastic product when the mold is opened. In order to reduce the heavy workload of mold design and manufacturing, most injection molds use standard molds. [0003] Existing injection molds are often designed with related exhaust structures to eliminate air holes on the surface of the finished mold after the injection mold is formed, and in turn reduce the probability of defects on the surface of the ...

AI Technical Summary

Problems solved by technology

[0003] Existing injection molds are often designed with related exhaust structures to eliminate air holes on the surface of the finished mold after the injection mold is formed, and in turn reduce the probability of defects on the surface of the finished mold. However, most of the existing exhaust structures It often only has a single exhaust function, and because some hot-melt plastic raw materials contain a small amount of harmful molecules, it will affect the health of the staff over time

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