Patent ID: 8500428

Claim:
A machine for making cotton candy including: a shell ( 2 ); a sugar-spinning unit ( 3 ) including: a heater ( 31 ) located in and connected to the shell ( 2 ) for heating and melting sugar; a bowl ( 32 ) coaxially located around the heater ( 31 ); a lid ( 33 ) located on the bowl ( 32 ) and formed with a first slot ( 331 ); and a primary motor ( 30 ) for spinning the heater ( 31 ) and the bowl ( 32 ) to spin the molten sugar into the bowl ( 32 ) from the heater ( 31 ); and a scraping unit ( 7 ) including: a holder ( 70 ) including two plates located in and connected to the shell ( 2 ), with a gap ( 700 ) defined between the two plates; a stopper ( 701 ) connected to the holder ( 70 ); a lever ( 72 ) including a second slot ( 721 ) defined therein; a first scraper ( 722 ) connected to the lever ( 72 ); a second scraper ( 71 ) pivotally connected to the plates of the holder ( 70 ); a hook ( 711 ) connected to the second scraper ( 71 ) and adapted to hook the lever ( 72 ); an axle ( 74 ) inserted in the holder ( 70 ) and the lever ( 72 ) and the second scrapper ( 71 ); a tensile spring ( 75 ) for connecting the second scraper ( 71 ) to the lever ( 72 ); a difference motor ( 73 ) including a mandrel ( 730 ); a crank ( 76 ) including an end connected to the mandrel ( 730 ) of the difference motor ( 73 ); and a pin ( 760 ) connected to an opposite end of the crank ( 76 ) and movably inserted in the second slot ( 721 ) defined in the lever ( 72 ), wherein the lever ( 72 ) and the second scraper ( 71 ) can be pivoted, by the difference motor ( 73 ) via the crank ( 76 ) and the tensile spring ( 75 ), into the bowl ( 32 ) through the first slot ( 331 ) defined in the lid ( 33 ), wherein the lever ( 72 ) can continue to be pivoted after the second scraper ( 71 ) is stopped by the stopper ( 701 ) so that the first scraper ( 722 ) is located against an internal side of the bowl ( 32 ) to scrap stains of sugar from the bowl ( 32 ), wherein the lever ( 72 ) and second scraper ( 71 ) can be pivoted back so that the second scraper ( 71 ) is released from the stopper ( 701 ) and pivoted past the first scraper ( 722 ) by the tensile spring ( 75 ) to scrap the stains of sugar from the first scraper ( 722 ).