How can you make mold slide comes out of lifter?

It is rare to see the structure of slide coming out of lifter in plastic injection molds. We are not experts, but we just design a typical mechanism that works quite well based on our experience.  Hope that it helps you.

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Mold Design Concept

If we use common mold slide, the steel circled in red get stuck. And the undercut could not be released with this.

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  1. How to design lifter head?  

Green block is lifter with a prominent tail while the purple block is slide which is to release undercut and drive lifter to release undercut downwards.

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  1. Further explanation on slide out of lifter in plastic injection mold

Mold lifter needs a limit screw to limit the stroke of lifter travelling down while the spring is to prevent lifter from moving right with slide

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  1. The science of structure of slide from lifter  

Angel lifter drive slide to move right And slide insert drive lifters to move downwards while releasing undercut. Spring works to prevent lifter moving right with the slide which stops after certain stroke and will be locked by the limit screw.

 

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This is only our basic design. You are welcome to provide suggestion for better improvement by writing us an email.

 

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