The invention provides an intelligent multi-functional
sewing machine and particularly relates to the technical field of
sewing machine manufacturing. The intelligent multi-functional
sewing machine is characterized in that a composite transmission wheel is fixed on a rear output shaft and equipped with a swinging column; the swinging column is positioned, runs and transfers a swinging source inside the front positioning part of a rotating connecting fork rod, as well as is driven by a driving source to be positioned, idle and perform thread trimming, thread loosening and presser foot liftingactions on the propping circular arc-shaped surface of the rotating connecting fork rod; a presser foot lifting
cam component is rotationally propped against a presser foot lifting ejector plate; thepresser foot lifting ejector plate acts on a presser foot lifting ejector rod so as to lift a presser foot; a thread loosening
salient point has the function of triggering a thread loosening device ejector rod; a thread trimming
crank, namely a pushing component, is mounted and fixed on a front output shaft; and a rotating ball arranged on the thread trimming
crank runs and performs thread trimming action in a thread trimming
cam. According to the intelligent multi-functional sewing
machine, the four actions of presser foot lifting, thread loosening, reinforcing and back-and-forth sewing, as well as thread trimming are controlled through a motor, so that the sewing
machine production cost can be greatly reduced, and the problem that the sewing
machine manufacturing cost and the
noise are high because electromagnets are adopted for thread loosening can be effectively solved.