{HEAD ~ elastic force detecting means} for detecting {TAIL ~ an elastic force} of the springs during a forward motion of the ejector pins from a retracted position 
for detecting
{ HEAD ~ elastic force detecting means } for detecting { TAIL ~ an elastic force } of the springs during a forward motion of the ejector pins from a retracted position
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH