Automatic sewing device with a sewing head including a rotary housing

An automatic sewing device with a sewing head (5) and a device for generating a two-axis-relative movement between the sewing head (5) and a workpiece (36) to be sewn, said sewing head (5) including:

• a rotary housing (41) supported at said sewing head (5) and
• drivable in a swivelling manner about an axis of rotation by an adjusting shaft (46), said rotary housing (41) having:
• a needle bar (44) with a needle (43) supported in said rotary housing (41) and reciprocatingly drivable via a crank drive (62) driven by a common drive, which common drive is drivable by a main drive shaft (54) of said sewing head (5), the needle having a needle axis (42) being identical with said axis of rotation,
• a needle jogging gear (63, 64) connected to said crank drive (62) for generating a needle feed movement, and
• a thread take-up level drive (40) coupled to said crank drive (62),
• a hook bearing (45) drivable in a swivelling manner by said adjusting shaft (46) about said needle axis (42) equiangularly to said rotary housing (41),
• a hook (53) arranged in said hook bearing (45) and drivable by said main drive shaft (54),
• a drive motor (68) for driving said main drive shaft (54),
• an adjusting drive (84) for driving said adjusting shaft (46), and said main drive shaft (54) and said adjusting shaft (46) being coupled via a differential gear (72) in such a manner that at rotations of said adjusting shaft (46) a swivelling movement is imparted to the main drive shaft (54) which compensates changes of position of said needle bar (44), said needle jogging gear (63, 64), said thread take-up lever drive (40) and said hook (53).