{HEAD ~ The lateral drive} moves {TAIL ~ the elevation drive unit} or the like toward the side of the travel rail, the θ drive rotates the elevation drive unit in a horizontal plane, and the elevation drive unit elevates/lowers the elevation frame where the article is chucked and released freely 
moves
{ HEAD ~ The lateral drive } moves { TAIL ~ the elevation drive unit } or the like toward the side of the travel rail , the θ drive rotates the elevation drive unit in a horizontal plane , and the elevation drive unit elevates / lowers the elevation frame where the article is chucked and released freely
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH