; the key to get high degree of automation of the opener, safe and reliable; the structure is compact, the loose rate high, the cotton fiber maximum open pine, which does not damage the fiber cotton slip and curl, and the cotton fiber to achieve the ideal of fluffy effect; the production efficiency is high, the operation is simple; product design is equipped with overload protection device, all the work and all through the dynamic balance machine in operation process no vibration, low noise; production process in case of a metal, in open pine and before will automatically alarm and shutdown, avoid the damage to the machine parts - open pine work roll work roll coating, the self-locking needle cloth, service life is long.