Rear cavity ejection device for mold, which is self-controlled in form and small in damage

Abstract

The invention relates to the technical field of molds, in particular to a rear cavity ejection device for a mold, which is self-controlled in form and small in damage; the rear cavity ejection devicecomprises a fixed mold; a conductive column is fixedly connected to the inner bottom wall of the right side of the fixed mold, and a spring I fixedly connected with the inner bottom wall of the fixedmold sleeves the outer side of the conductive column. The rear cavity ejection device for the mold is self-controlled in form and small in damage. The rubber and turbid liquid are matched for use; when the fixed mold is in a non-clamped state, the turbid liquid is in a fluid form and soft, so the rubber would be extruded and deformed when being hit by a push rod; the turbid liquid is extruded to move and jack up the top of the rubber; meanwhile, a piston plate is extruded into a buffer groove by the turbid liquid to play a role in buffering and protecting the rubber, and due to the property ofthe rubber, when the rubber extrudes a finished product, the contact surface is larger, and the finished product is not easy to damage, so that the effect of effectively reducing damage is achieved,the production efficiency is improved, the production cost is reduced, and the problem of high damage rate is effectively solved.

Description

technical field [0001] The invention relates to the technical field of molds, in particular to a back cavity ejector for molds with self-controlled shape and little damage. Background technique [0002] Injection mold is a kind of production mold commonly used in mold production. Injection molds are usually composed of a moving mold and a fixed mold. During production, the moving mold and the fixed mold are clamped together, and the raw materials are injected into the moving mold and the fixed mold through the injection molding device. Set the middle of the mold, and finally cool and form, and then eject the formed mold through the rear cavity ejector device. [0003] Most of the current ejection devices use the push rod to directly extrude the product. Such an ejection method is too rough and easy to damage the product, resulting in a decrease in production efficiency. Moreover, the ejector device is not equipped with a protective device, which may cause the ejector device ...

AI Technical Summary

Problems solved by technology

[0003] Most of the current ejection devices use the push rod to directly extrude the product. Such an ejection method is too rough and easy to damage the product, resulting in a decrease in production efficiency. Moreover, the ejector device is not equipped with a protective device, which may cause the ejector device to be formed. Work in the process, resulting in product molding errors, reducing production efficiency

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