Sewing direction control apparatus for sewing machine

摘要

A sewing direction control apparatus for sewing machine, comprising: a base plate, a circular ring-shaped transmission element dispose on the base plate and a driving element with a driving unit. During sewing, the driving unit drives the transmission element, rotating a sewing product placed at the center of the transmission element with the driving element, thereby controlling the sewing direction of the sewing product, and thus improving the sewing accuracy. The direction control apparatus has low cost, and is suitable for various types of automatic sewing machines.

主权项

1. A sewing direction control apparatus for sewing machine, the sew machine being provided with a needle, the sewing direction control apparatus comprising:
a base plate being an X-Y planar surface with an X direction and a Y direction, a lateral edge of the base plate in the X direction being provided with a drive portion which includes a gap and two assembling holes at two ends of the gap; a transmission element being a circular ring-shaped structure mounted on the base plate and centrally provided with a circular cavity and a threaded surface around an outer peripheral surface thereof, the transmission element being disposed on the base plate and having the threaded surface protruded out of the gap of the drive portion, a sewing product being fixed at a bottom of the cavity and located corresponding to the needle; a slide rack disposed at an outer surface of the drive portion of the base plate and provided with a passage aligned to the gap of the drive portion, and two abutting protrusions aligned to the two assembling holes of the drive portion, the slide rack being provided with a Y-direction displacement mechanism and an X-direction displacement mechanism to drive the slide rack to move in X and Y directions, the Y-direction displacement mechanism pushing the two abutting protrusions to move into the two assembling holes, and the X-direction displacement mechanism driving the slide rack and the base plate to move in the X direction; and a driving element mounted on the slide rack and including a disc-shaped driving unit, the disc-shaped driving unit being formed with a threaded surface around an outer peripheral surface and extending out of the passage of the slide rack, the slide rack driving the driving unit to move in the Y direction, so that the driving unit is able to engage with the threaded surface to simultaneously rotate the transmission element and the sewing product, or the driving unit is able to disengage from the threaded surface to stop the transmission element from rotation.