A mold for automatically cutting a side gate in a mold

By using an in-mold automatic side gate cutting mold with a locking device and a gate cutting device, the problem of manual gate trimming after plastic parts production is solved, realizing automated gate cutting, improving production efficiency and product aesthetics.

CN115742207BActive Publication Date: 2026-05-29QINGDAO HI-TECH MOULDS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QINGDAO HI-TECH MOULDS CO LTD
Filing Date
2022-11-23
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In existing technologies, after plastic parts are manufactured, the connection between the gate and the product needs to be manually trimmed. This is labor-intensive and the trimming is not aesthetically pleasing, which can easily lead to the collapse of corners and cracking of the product surface, reducing the product qualification rate and increasing labor costs.

Method used

Design a mold for automatic in-mold shearing of side gates. The mold adopts a locking device, a gate cutting device and a cutting blade structure. The automatic shearing of the gate is achieved by the coordinated movement of the slider and the core pulling block driven by the hydraulic cylinder, ensuring that the gate is flat and smooth.

Benefits of technology

It achieves automatic gate cutting, eliminating the need for manual trimming, improving production efficiency, and resulting in a smooth and flat gate that enhances product aesthetics and yield.

✦ Generated by Eureka AI based on patent content.

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    Figure CN115742207B_ABST
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Abstract

The mold for automatically cutting off side gate in mold comprises a front mold plate and a back mold plate, a side gate, a gate cutting device and a locking device, the locking device comprises a core-pulling block, a sliding block and an oil cylinder, the core-pulling block is arranged on the left side of the sliding block and is in sliding connection with the sliding block, the top end of the core-pulling block is flush with the sliding block body, the top end of the sliding block body is provided with a notch, the notch and the side wall of the core-pulling block form a groove, the front mold plate is provided with a protruding part matched with the groove; the gate cutting device comprises a guide block, the top end of the guide block is provided with a cutter for cutting off the side gate, the guide block is arranged on the left side of the core-pulling block and is in sliding connection with the core-pulling block; the oil cylinder is connected with the sliding block, the oil cylinder drives the sliding block to move rightward first, then drives the core-pulling block to move downward, and then drives the core-pulling block and the guide block to move rightward together. The mold for automatically cutting off gate in mold provided by the application can save the subsequent manual cutting-off process of the gate, save the processing cost and improve the production efficiency; after the gate is cut off, the gate is smooth, which is beneficial to the appearance of the product.
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