Automatic S-shape Sofa spring machines  Main Application & Performance:  With this kind machine, pitch and height of the S-shape Zigzag Spring is adjustable in certain range. With convenient operation, it is an ideal equipment for making cushion spring used in sofa and automobile.  It is optional to equip this machine with auto cutting mechanism, as well as finished spring winding mechanism  It can cut off automatically  It is controlled by electronic machine and can strengthen its stability. The machine is easy to adjust.  It is computerized and can set the output  The speed can be adjusted  It can be cut off automatically at the set length  The position of the incision can be adjuted at the angle of 90 degree or 180 degree.  Main Technical Data:  Available Wire Diameter: 2.5-4.5mm  Available Spring Pitch: 20-60mm  Available Spring Height: 50-80mm  Motor Power: 7.5KW  Weight: 800kg.