How Does A Bowed Roller Work?

Banana rollers are named after their shape and function, and their curved shape resembles bananas. Banana rollers are widely used in various industrial fields, such as printing, packaging, papermaking, textile, etc.

How the banana roller works:
When the rotating sleeve rotates around the bending axis, the roller surface can be expanded and retracted, when the substrate starts to contact the roller surface from the concave arc, and leaves at the convex arc when it runs, only the central part of the roller surface of the arc roller is rotating in the direction parallel to the longitudinal direction, and the other points on both sides of the center of the roller surface are rotated at a certain angle with the longitudinal direction, so the drafting force to both sides of the substrate is generated, so that the substrate can be flattened.

How can curved rolls achieve better flattening results?
Because the roll surface is curved, there is a transition from short to long in the contact area as the material passes through the high point of the arc, resulting in a force from the middle to the edge of the material. Thus playing a role in eliminating wrinkles.

The composition and structure of the banana roller:
It is composed of an arc mandrel, a rolling bearing assembly, a rotating sleeve, an end sleeve, a bearing and an adjusting wheel.The mandrel has a certain curvature and is fixed on the equipment support with the support, and the mandrel and the roller surface are linked by bearings, so that the roller surface can rotate synchronously with the coil, so as to complete the stretching function. The arc roller is to bend the shaft into the required arc, the shaft is equipped with bearings at a certain interval, and the rubber sleeve is sleeved on the bearing to become a roller with arc shape and rubber sleeve that can rotate around the shaft.

Features of Banana Roller:
1) Adjust the tension. The curved shape of the banana roller helps to adjust the tension of the material during processing, ensuring a smooth movement of the material.
2) Transmission of materials. On some production lines, banana rollers are used to transfer materials such as film, paper, etc.
3) Evenly distribute the pressure. The bending design of the banana roller effectively distributes the pressure and avoids uneven pressure on the material.

Features of curved flattening rolls:
1) Safe and durable, easy to install and debug.
2) High linear speed, small run-out and no noise.
3) Small rotational torque, can withstand large tensile force.
4) The substrate is tight in the middle, loose on both sides or loose in the middle and tight on both sides, and has a unique flattening function.

Application areas of banana rollers:
1) Paper and film production. In the production of paper and film, banana rollers are often used to adjust the material tension to ensure a smooth transfer of material and prevent breakage or wrinkles.
2) Textile industry. In textile production lines, banana rollers are used to help guide the fabric smoothly.
3) Printing industry: During the printing process, banana rollers help to eliminate curls and wrinkles in the material and provide accurate guidance.

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(Over 20 years experience in rollers production )