Such machinery are handy and flexible and feature a high rotation speed, low noise, small vibration and beautiful stitches. The tension of the stitch threads is small. During the high-speed sewing, the stable and beautiful stitches can be sewn. The needle bar thread-taking-up and the ultra-large thread amount regulating mechanism can adapt to the sewing of different materials. The needle bar adopts the guide rod sliding type, which reduces the weight of the needle framework part. The application of the needle framework counterbalance effectively reduces the vibration of the machine. The special treatment on the needle bar surface improves the hardness and strength of the needle bar and ensures the service life of the machine. The one-way movable throwing device makes the threading simpler and faster. The large-diameter throwing device provides sufficient threads during the sewing process, effectively prevents the thread jumping and ensures the stable and beautiful stitches.