The differential air shaft introduction and advantages

The differential air shaft introduction and advantages

Differential air shaft, also known as friction shaft. It is applied to the rewinding shaft of the slitting machine, and it is also used to unwind the shaft in special occasions.

The purpose is to use the principle of slippage of each slip ring on the slip shaft to make multiple rolls on the shaft always maintain constant tension for unwinding.

The slitting machine is a device that divides a roll of roll material into multiple rolls, which is widely used. The function of the rewinding shaft is to split the various rolls of various materials from the winding core to the outer layer uniformly, neatly and with constant tension on one or two shafts. However, due to the uneven thickness of the material itself, there is a certain thickness error.

After the coil is continuously taken up, the diameter of each coil produces a larger accumulation error. This results in a larger winding speed difference and a greater tension difference between the strips. As a result, the coils are not tight, and the end faces are uneven. In serious cases, the material is scrapped due to excessive tensile force, especially the polyester film.

Not only the thickness error is large, but the elongation is large, and it is easy to cause deformation due to tensile deformation. The special slip shaft structure is composed of multiple slip rings, which can overcome the above phenomenon. During work, the slip ring is controlled to slip with a certain slip torque value (torque), and the amount of slip just compensates the speed difference generated, so that the tension of each roll of material can be accurately controlled, and constant tension can be taken up to ensure the take-up. quality.

With the improvement of people's living standards and the development of science and technology, higher and higher requirements are imposed on flexible packaging products, the elongation requirements of films are becoming smaller and smaller, and the uniformity of the winding end surface is getting higher and higher. Tension control puts forward higher requirements. The accuracy of the tension control of the winding shaft directly determines the elongation of the slitting product and the uniformity of the end face, so it is necessary to use a slip shaft.

The use of the differential air shaft, the speed of the slitting machine, the rewinding accuracy, the degree of automation, the reduction in preparation time, and the humanization of the operation can be improved. In particular, a variety of cast polyester materials with poor tensile resistance and large thickness errors use slip shafts to reduce the difficulty of winding. The winding of precious metal foil with slip shaft application greatly improves the authenticity rate and reduces the production cost. It can be used in the range from extremely low to the highest tension. It is suitable for the requirements of high speed, large material thickness error, multi-stage tension control, high tension control accuracy, and neat end surface winding.