LEAK TESTING DEVICE OF NOZZLE FOR COLDRUNNER MOLDING

摘要

The present invention relates to a leak testing device for a cold-runner nozzle for molding and, more specifically, to a leak testing device for a cold-runner nozzle for molding testing the existence of a leak in an outer wall joint of a cooling channel of the nozzle through which liquid silicon is injected into a mold. The present invention as a technical means to solve the above problem includes a test case wherein a testing liquid is stored; a nozzle mounting unit formed on the open top of the test case and including a horizontal air channel inside a body and a nozzle mounting hole on the air channel; an air pump having one end connected to the air channel and injecting air into the air channel; and the nozzle inserted and mounted inside the nozzle mounting hole. The nozzle includes an inlet and an outlet of the cooling channel on lateral surfaces in the longitudinal direction of the body, thereby being capable of connecting at least one between the inlet and the outlet of the cooling channel to the air channel when inserting the nozzle into the nozzle mounting hole.