Paper winder is la kind of paper winding machine in paper making mills. It is usually located at the end of the paper machines and is used to make the produced paper into finished rolls. The performance of the paper winder will affect the tightness and quality of paper roll directly, and influence the storage and subsequent processing performance of the roll.
At present, the most commonly used machine is a horizontal cylinder winder. It consists of a paper roll cylinder, double support rods, paper rolls, etc. The paper roll cylinder is an active cylinder whose speed is the same as or slightly faster than that of a paper machine. The paper roll is used to drive the roll by the friction between the roll and the cylinder. The paper roll cylinder is generally filled with cold water to cool the paper sheets and eliminate static electricity, so it is sometimes called “cold cylinder winding”.
On a cylinder winder, the tightness of the roll depends on the pressure between the roll and the cylinder. The brackets on both sides of the cylinder are provided with a pressure regulating screw, which can make the journal of paper roll move back and forth, and adjust the pressure of the roll on the cold cylinder, so as to keep the pressure of the roll and the cylinder uniform. Most of new paper machines use pneumatic pressurizing and retracting devices. By operating the control box to control the air pressure of the jib and main arm, the line pressure between the roll and the cylinder can be adjusted to make the paper rolled down by the paper machine to paper roll with uniform tightness.
The performance of the paper winder has a great impact on the quality of the paper roll. If the paper roll is too loose, it will get deformed easily during storage and lose original cylindrical shape. Due to uneven rotation, the vibration and tension of the roll will be inconsistent, increasing the breakage of the paper sheet. If it is rolled too tightly, it will break due to the reduced elasticity of the paper. In addition, the quality of the roll paper is not good, and there are paper problems such as folds, which affects the quality of the paper sheet and the output of the paper machine.
The status of the paper roll machine is also increasing. The paper winder is the first complete equipment after the paper machine. It is a paper making equipment, which belongs to the category of equipment accessories. It relies on the weight of the roll and the friction of the cold cylinder to drive the paper under the roll to be evenly wound. Therefore, the roll makes the paper more uniform and can meet the needs of different papers.
Main technical parameters
|Net Paper Width (mm)||1760||2362||2640||2850||3200||3600||4400|
|Paper Width (mm)||1810||2412||2690||2900||3250||3650||4450|
|Max. Diameter of Paper Roll||1600mm-2500mm|
|Working Speed||500m / min|
|Roll Pressure||3-4 (N/mm)|
|Paper Weight||30-650 (g/m2)|