What are return pins?

return pins for plastic injection mold

The function of return pins

Return pins’ functionis to push the ejecting plate back

The Spec. of return pins

Usually, when production automation is required for the plastic injection mold, a spring has to be installed under RP. See the following diagram: The spring type is TF. (Note: spring installation requirements: A. Spring preload is set between 5 – 10mm in the pre-action status. B. Spring preload is set to be over 10mm when return is first needed.

The material of return pins

SUJ2,Hardness HRC60°(High frequency quenching)

return pins design for plastic injection mold