Floating ejection device for automobile plastic part mold

By adjusting the air pressure in the floating ejection device of the mold and increasing the air pressure thrust by using the exhaust port, the problem of ejection difficulty caused by air pressure difference during the ejection process of the mold is solved, achieving more efficient demolding and reducing product damage.

CN224446727UActive Publication Date: 2026-07-03SUZHOU SHIYUNJIA PLASTIC PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU SHIYUNJIA PLASTIC PROD CO LTD
Filing Date
2025-06-27
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

During the ejection process of existing molds, the air pressure between the product and the mold cavity separation surface is lower than the external air pressure, which increases the difficulty of ejection and affects the complete demolding of the product.

Method used

A floating ejection device for automotive plastic parts molds was designed. After the ejector block is separated from the connecting groove, it connects with the product and the mold cavity. The air pressure is adjusted, and the gas is discharged through the exhaust hole to increase the air pressure in the space as the ejection thrust. Combined with the balancing mechanism of hydraulic push rod and spring, the force is balanced and the risk of product damage is reduced.

Benefits of technology

It effectively reduces the pressure of external air pressure on the product, improves demolding efficiency, reduces the possibility of product damage, and enhances the ejection effect of the mold.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224446727U_ABST
    Figure CN224446727U_ABST
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Abstract

This utility model relates to the technical field of mold ejection devices, and discloses a floating ejection device for automotive plastic parts molds, comprising: a fixed mold, wherein a connecting cavity is provided on the inner wall of the mold cavity of the fixed mold, a support shell is fixedly connected to the bottom of the fixed mold, two symmetrically distributed mounting slots are provided on the surface of the support shell, a filter screen is fixedly connected to the inner wall of the mounting slot, a base plate is provided inside the support shell, and a hydraulic push rod is provided at the bottom of the fixed mold; by setting an ejection mechanism, after the ejector block is separated from the connecting slot, it can communicate with the space between the product and the mold cavity to achieve the effect of regulating the air pressure in this part of the space, thereby reducing the pressure of external air pressure on the product and facilitating demolding. Based on the air pressure regulation through the connecting channel, the gas discharged through the vent hole can temporarily increase the air pressure in this part of the space, and use this air pressure as the ejection thrust to enhance the demolding effect.
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