Secondary ejection structure for mould

Abstract

The invention discloses a secondary ejection structure for a mould, which comprises a movable mould assembly and a fixed mould frame; a fixed mould mounting block is fixedly mounted on the upper surface of the fixed mould frame through bolts; a fixed mould core is fixedly connected to the upper surface of the fixed mould mounting block; and the inner bottom wall of the fixed mould frame is fixedly connected with four compression springs and sliding guide columns respectively. According to the secondary ejection structure for the mould provided by the invention, through the arrangement of a first push plate, a first ejector rod, a second push plate and a second ejector rod, after injection moulding is completed, when the movable mould assembly ascends and is separated from the fixed mould core, the first push plate and the second push plate are driven to move upwards under the resilience force action of the compression spring; meanwhile, the first ejector rod and the second ejector rod are driven to complete two times of ejection operation in sequence, so that the effect of secondary mould ejection is achieved; the situation that a workpiece cannot be completely ejected out of a mould core due to traditional single mould ejection is avoided; manual assistance is not needed; automatic remoulding is achieved; and the machining efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of injection molds, in particular to a secondary ejection structure for molds. Background technique [0002] At present, injection molds are used to produce similar circular plastic parts. The bottom surface or outer wall of this type of product is made with a convex ring or edge. When molding this type of product, traditional injection molds use the combination of direct ejector top and stripper plate. ejected. [0003] However, after the plastic workpiece is ejected from the mold, it is easy to get stuck on the mold, and the workpiece cannot fall off automatically. Generally, when taking out the product from the mold, no matter whether a single or multi-component ejection mechanism is used, the ejection action is completed at one time. , but for products with special shapes, if the workpiece cannot be completely separated from the mold after one ejection or the workpiece cannot be separated by the ejectio...

AI Technical Summary

Problems solved by technology

[0003] However, after the plastic workpiece is ejected from the mold, it is easy to get stuck on the mold, and the workpiece cannot fall off automatically. Generally, when taking out the product from the mold, no matter whether a single or multi-component ejection mechanism is used, the ejection action is completed at one time. , but for products with special shapes, if the workpiece cannot be completely separated from the mold after one ejection or the workpiece cannot be separated by the ejection mechanism, manual demoulding is required, or the ejection stroke of the ejection mechanism needs to be increased. Time-consuming, reducing the efficiency of product processing

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