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Vacuum roller, also known as vacuum suction roller, is a type of suction roller used in film winding equipment. It is different from ordinary double-sided rollers. The roller surface of the vacuum roller is equipped with suction holes that penetrate the roller surface, and there is a suction element inside the roller. The suction element has a suction port facing the inner wall of the roller. As the roller rotates relative to the suction element, the suction holes on the roller surface periodically pass through the suction port of the suction element The radial position of the suction element inside the roller is variable. As the radial position of the suction element inside the roller changes, the suction port of the suction element can be either in contact with or separated from the inner wall of the roller.

 Principle of vacuum adsorption roller:

Connect the vacuum pump to the adsorption roller and install it at the optimal position on the equipment for traction. The ultra-thin coil is attracted forward by a certain vacuum attraction, also known as a vacuum traction roller.

 Vacuum roller adsorption roller function

When the product roll is not suitable for double-sided contact and cannot be designed with clamping rollers, the invention of vacuum rollers provides you with an ideal solution. At the same time, the vacuum adsorption roller can be installed in front of the air flotation oven (a device suitable for double-sided coating of rolls), which is an excellent tension isolation and control point. The vacuum roller adsorbs the coil through vacuum, making it tightly adhere to the cylinder, increasing friction and preventing the coil from slipping.

Characteristics of vacuum rollers

Flexible selection: Compared with ordinary transfer rollers, its adsorption contact area on the carrier is 5-10 times higher, greatly improving work efficiency, and different adsorption forces can be selected according to the weight of different carriers,

Anti dust entry: Compared with traditional transfer rollers, the special technology of this roller prevents the inhalation of dust and other foreign objects, greatly improving its service life;

Adopting vacuum adsorption method: solves the problem of fracture during the stretching process of thin films, and has constant traction force for thinner materials. The optimal choice for traction during coating and winding operations. The invention of vacuum adsorption rollers has effectively solved the problem of ultra-thin coils not being able to be wound by double-sided rollers, ensuring the product yield and production efficiency of thin film coils.