The Computerized Lock Stitch Multi needle Quilting Machine, models TD-64-2B, TD-94-2B, TD-112-2B, and TD-128-2B, feature a cam-free double-swinging device connecting the needle bar and press plate. This ensures high precision and durability. The structure effectively prevents lubrication and dirty material issues, and the optimized mechanical structure provides a rigid machine body and stability, allowing for faster and smoother operation.