Device for manufacturing double walled paper cups

A device for manufacturing a double-walled paper cup by combining an inner cup and an outer cup using hot-melt comprising:

• an outer cup forming part which includes:
• a turret that rotates intermittently around a vertical axis perpendicular to a ground and is radially provided with a plurality of outer cup mandrels that have their corresponding central axes horizontal to the ground;
• and an enclosing means which is configured to allow an outer cup paper to surround a specific outer cup mandrel among the outer cup mandrels at an enclosing station, to thereby form an outer cup with a tapered shape;
• an outer cup transporting part which includes:
• a rotational transporting means which rotates intermittently around its horizontal axis horizontal to the ground and has a plurality of circular slits, wherein respective diameters of the circular slits are smaller than a diameter of an upper portion of the outer cup and larger than a diameter of a lower portion of the outer cup;
• an outer cup inserting means which takes the outer cup from the specific outer cup mandrel to insert the outer cup into a specific circular slit starting from the lower portion of the outer cup when the specific outer cup mandrel with the outer cup being surrounded is arrived at an outer cup ejecting station of the outer cup forming part;
• a shaft that moves up and down in the vertical direction in response to a motion of a cam and extends in the vertical direction;
• a first pusher that is connected to a first extension bar which is perpendicularly engaged with the shaft, and that firmly restrains the outer cup inserted into the specific circular slit among the circular slits by pushing the upper portion of the outer cup toward the specific circular slit;
• and a second pusher, engaged with a movable rack gear of a rack-pinion gear wherein a pinion gear in the rack-pinion gear is engaged with a second extension bar perpendicularly engaged with the shaft, for separating the outer cup which has been firmly restrained in the specific circular slit when the specific circular slit is arrived at a position of the second pusher by pushing the lower portion of the outer cup to an outside of the specific circular slit with a stronger stroke than the first pusher;
• and
• an outer cup combining part which includes:
• a rotating table that rotates intermittently and is radially provided with a plurality of rotatable inner cup mandrels;
• a rotating pocket which is configured to rotate a specific inner cup mandrel among the inner cup mandrels by contacting a specific driving shaft of the specific inner cup mandrel that extends to a lower outer region of the rotating table while the specific inner cup mandrel with an inner cup being provided thereto is located at a hot-melt station and the inner cup is applied with hot-melt at the hot-melt station;
• and a first hot-melt spraying nozzle that applies the hot-melt to an outer surface of the inner cup rotated by a rotation of the specific inner cup mandrel, wherein in a state where the inner cup provided with the hot-melt applied on its outer surface is positioned at a combining station, the outer cup separated from the specific circular slit by the second pusher is initially combined with the inner cup.