Understanding Guide Pins in Injection Molding
But have you asked yourself how the two halves of a mold are able to align properly when closed? The answer is not far-fetched. Guide pins are the reason for the proper alignment and accurate functionality of these two mold halves.
Considering that guide pins are designed as a permanent fixture on the stationary half of the mold, this ensures that the moving half of the mold has something to guide it to its normal position when the mold is closed. Hence, the name guide pins.