A coinjection molding apparatus includes a manifold, a nozzle body coupled
to the manifold, a sleeve disposed within the nozzle body and defining an
outer melt channel between the sleeve and the nozzle body, a pin disposed
within the sleeve and defining an inner melt channel between the pin and
the sleeve, and a nozzle tip having an alignment portion contacting the
sleeve. The sleeve is actuated to open and close melt communication of
the outer melt channel and a cavity gate. The pin is actuated to open and
close melt communication of the inner melt channel and an opening of the
sleeve. The alignment portion aligns the sleeve with the cavity gate
along the actuated range of the sleeve.