Detailed introduction of the slip shaft of the slitting machine

Introduction to the slip shaft of the slitting machine. The slip shaft of the slitting machine is also called a friction shaft, a differential shaft or a slip-type air expansion shaft. It is generally composed of a main shaft, a slip air expansion unit, a coupling and other accessories. According to the protruding parts Different, they are divided into ball slip shafts, key slip shafts, column slip shafts and various hybrid convex slip shafts.
The spindle of the slip shaft has a high precision. Many grooves are milled on the shaft body to place the wool felt and air bags. When the air in the shaft center is inflated, the flat air bag will expand and hold up the wool felt and exert force on the slip ring.
As the diameter of the coil increases, the torsional force of the material on the slip ring also gradually increases. At this time, it is necessary to increase the air pressure to increase the force of the wool felt on the slip ring to balance it and avoid friction between the slip ring and the axis, which may cause the slip ring to slide. Excessive felt wear shortens the service life of the slip shaft of the Lipu slitting machine. During the winding process of the slitter, as the difference in roll diameter accumulates, the main winding tension is transferred to the larger diameter roll, which means that the larger diameter roll will be wound tightly and the smaller diameter roll will be wound tightly. The material roll will be loosely wound. When the material is too tight, the slip ring will slip under a certain torque force. The slip is used to compensate for the speed difference between each roll, eliminating tension and keeping the tension between each roll on the coaxial axis constant, achieving the ideal The tightness ensures high-quality curling effect and is often used in Lipu slitting machines with center curling method. Especially for some polyester film materials with poor stretch resistance, or some expensive materials, using the slip shaft for phased rewinding can significantly reduce material scrap and improve the yield. These are difficult to achieve with an air-expanding shaft. of. In addition, each group of slip units of the slip shaft can be interchanged or replaced individually, which increases the life cycle and facilitates maintenance.