Apparatus for manufacturing a double wall paper cup

An apparatus for manufacturing a double wall paper cup comprising:

• a first rotation table configured to rotate intermittently on a horizontal rotating shaft, wherein the horizontal rotating shaft is arranged to be horizontal to a ground surface;
• a plurality of slots for an outer cup part, each of which is installed at intervals of a first predetermined angular value on an outer peripheral surface of the first rotation table, wherein a specific slot among the slots is configured to hold a lower end of the outer cup part by using a sharp groove formed inside of the specific slot after the outer cup part is inserted into the specific slot at an outer cup part-providing location;
• a second rotation table configured to rotate intermittently on a vertical rotating shaft, wherein the vertical rotating shaft is arranged to be vertical to the ground surface;
• a stroker, which is installed under the second rotation table, wherein a part of the stroker is configured to move up and down at a combining location;
• and
• a cup-combining unit including:
• (i) a plurality of inner cup part mandrels, each of which is installed at intervals of a second predetermined angular value on a circumference area of an upper surface of the second rotation table;
• and (ii) a plurality of pushers, each of which has each of pushing shafts engaged with each of heads, wherein each of the pushing shafts is capable of moving up and down in directions perpendicular to the ground surface via each of through-holes formed through each of the inner cup part mandrels and the second rotation table, wherein a specific pushing shaft among the pushing shafts is configured to be moved to a lower side of the second rotation table or to be moved to an upper side of the second rotation table via a specific through-hole among the through-holes, and wherein a specific head among the heads is in contact with a lower end of an inner cup part;
• in case the specific pushing shaft is moved to the upper side of the second rotation table by using the stroker at the combining location, the inner cup part held on a specific inner cup part mandrel among the inner cup part mandrels is pushed up to the specific slot where the outer cup part has been inserted, thereby allowing the outer cup part to be combined with the inner cup part.