Then, {HEAD ~ an extruding shaft} is pushed forward into {TAIL ~ the mold chamber} from an end of the mold module 
is pushed forward into
Then , { HEAD ~ an extruding shaft } is pushed forward into { TAIL ~ the mold chamber } from an end of the mold module
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH