Patent ID: 8261752

Claim:
An automatic cigarette tube injector for injecting tobacco leaves into a hollow cigarette paper tube, comprising: a housing having a tobacco cavity for said tobacco leaves disposing thereat, and a feeding opening for said cigarette paper tube alignedly supporting thereat, wherein a longitudinal length of said housing is lesser than two cigarette lengths of said cigarette paper tube; an electric motor, having an output shaft, received in said housing; and a cigarette filling arrangement, which is driven by said electric motor via said output shaft for automatically feeding said tobacco leaves to said cigarette paper tube through said feeding opening of said housing, wherein said cigarette filling arrangement comprises: a tobacco feeder, which is a feeding crank, longitudinally supported in said housing and driven by said output shaft at a longitudinal direction which is an injection direction; a retention member for retaining said tobacco leaves from said tobacco cavity; a feeding member sildably supported in said housing along a direction perpendicularly to said injection direction, wherein said tobacco feeder is able to be slid to couple with said retention member to form a tubular chamber for holding said tobacco leaves therein such that said tobacco feeder is able to be driven to push towards said feeding opening of said housing for feeding said tobacco leaves into said cigarette paper tube; and a reciprocating unit for transmitting a rotational power of said output shaft to a sliding movement of said tobacco feeder, wherein said tobacco feeder is linearly moved at said longitudinal direction out of said feeding opening for feeding said tobacco leaves into said cigarette paper tube and is longitudinally received in said housing to minimize said longitudinal length of said housing which is lesser than two cigarette lengths of said cigarette paper tube.