Plastic injection mold ejector pin reset mechanism

Abstract

The invention discloses a plastic injection mold ejector pin reset mechanism, and relates to a reset device which includes a movable mold, a fixed mold, an ejector pin plate, an oblique jacking part, a fixing block, a power rod and an operating rod, wherein the movable mold is buckled together with the fixed mold; the ejector pin plate is positioned on one side, opposite to the fixing mold, of the movable mold; the end of the oblique jacking part is fixedly connected to the ejector pin plate, and the other end of the oblique jacking part extends into the movable mold in an inclined manner; the fixing block is fixedly connected onto the ejector pin plate; the power rod is fixed to the fixed mold in the moving direction of the movable mold and extends to be clung to the fixing block; one end of the operating rod is connected onto the movable mold in a rotating manner, and the other end of the operating rod extends to the joint part of the fixing block and the power rod in an inclined manner, and is clung to the fixing block and the power rod.

Description

technical field [0001] The invention relates to a reset device, in particular to an ejector pin reset mechanism of an injection mold. Background technique [0002] Due to the large number of orders for the plastic camera obscura series products and the high mold usage rate, this series of molds often have mold failures for repairs. The most repaired problem is that the inclined top is not reset and clamped, resulting in breakage. Each set of mold return pins in this series is equipped with four springs. In addition to being able to use the springs for multiple ejection, it is also used to force the ejector plate to reset with the spring after the product is ejected. However, this product requires a long ejection distance, which exceeds the maximum limit of the spring every time, greatly reducing the service life of the spring. Once the spring breaks or the ejector plate does not return due to other reasons, the spring loses its function of protecting the slanted roof, and t...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of resetting the thimble plate by relying on the spring, and repeatedly using the spring to reset, the spring will break due to repeated stress, so that the thimble plate cannot be reset, and the movement of the movable mold is used to press back the inclined ejector. It is also difficult to restore to the proper reset position

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