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)