SXF-80A DIGITAL unknotted spring coiling machine is an auto machine in making unknotted mattress springs. It combines coiling, end coil shaping, heating and outputting total procedures in one machine. SXF-80A machine is our newest pivotal model for making unknotted mattress spring units. The speed is at 80 units one minute. It catches up with the world advanced technology level by digital skill and PLC controlling. All of these make the machine has excellent reliability.