Work stacking apparatus

Claim 1

A work stacking apparatus for stacking a plurality of different types of works alternately, comprising: a rotary ring mounted for rotation in a horizontal plane; first stocking means for stocking a plurality of stacked first works at a first work supply position and at a first stand-by position circumferentially spaced from the first work supply position, said first stocking means comprising first stock rods provided uprightly along a circumferential line on an upper face of said rotary ring at the first work supply position and at the first stand-by position; second stocking means for stocking a plurality of stacked second works at a second work supply position and at a second stand-by position circumferentially spaced from the second work supply position, said second stocking means comprising second stock rods provided uprightly along a circumferential line on an upper face of said rotary ring at the second work supply position and at the second stand-by position, said first and second stock rods being provided alternately; means for receiving said first works and said second works alternately; a stacking arm pivotally mounted for rocking motion about a vertical axis between said first and second work supply positions and said receiving means; means for rocking said stacking arm; chuck means mounted on said stacking arm for chucking uppermost ones of said first and second works at the first and second work supply positions alternately and releasing them at said receiving means; and means for pushing up the stacked first and second works whenever the uppermost one of the first and second works is taken out from said first and second stocking means.