SUN HONG Curved Bow Roll
Bow Roll is known as Spreader Rolls, Bowed Rolls, Curve bar Expanders, Banana Rolls, Camber Rolls, and Wrinkle removing Rolls. Bow Rolls are available in rubber surface, hard chrome surface covering for non-sticking applications. Hard chrome surface Bowed Roller is used where speed is more than 300 meters minutes. If the speed is more, the bigger diameter is used to reduce the rpm of the roll.
Curved rubber roller has a certain arc in the longitudinal direction, it is fixed by the ball bearing and rotatable.
When the paper is rotated through the roller, it will be stretched in the longitudinal direction because of the certain curvature of the curbed rubber roller. The roller can stretch the paper to eliminate wrinkles and prevent the material in the cutting process.In other words, curved shaft fixed and the bending rubber roller would rotate well.
Working Principle
The difference between normal straight roller and curved roller is whether the axis has radian. In fact, we can think of a normal straight roller as a special curved roller with an axis radius of infinite days. In the process of paper production and processing, due to the shrinkage force of paper cross-section, the paper often appears wrinkles during operation. In the application of the arc roller, when the coil is close to the entrance span L of the arc roller, the edges of both sides of the paper begin to tilt towards the end of the corresponding arc roller, and then slowly stretch the paper to obtain the tension effect, so as to prevent wrinkling. When the paper contacts the surface of the curved roller, the edge of the paper will move further, so that every point of the paper is transported perpendicular to the roller surface.
Function of Curved Bow Roll
It is widely used for the paper, film, textiles and similar machine and equipment.
In the process of paper production and processing, due to the shrinkage force of paper cross-section, the paper often appears wrinkles during operation. And the bow roll in the paper wrinkle has superior performance.
The main function of the tension roller in the transverse direction is the anti crease function. The selection of the arc roller will determine the tightness of the paper, thus affecting the anti wrinkle effect.
Main Features
1. Bearing ring for internal structure.
2. Bearing installed in the rubber sleeve, resulting in small swing torque.
3. Smooth rubber surface without any negative impact in the material.
4. Roller face angle can be adjusted freely.
5.Better high temperature resistance, abrasion proof, anti-adhesive, and easy to clean.
6.The highest speed:2000m/min.
7.Different surface processing methods, such as Sand-blasting,Chrome plated,cover grooving.Special executions upon request.
8.Suitable machine: Cutter machine,Re-reeling machine,coating machine and paper machine.
Technical Parameter
| Number |
SH01 |
SH02 |
SH03 |
Application base material width |
| 1 |
590 |
678 |
730 |
500mm |
| 2 |
725 |
830 |
880 |
600mm |
| 3 |
1175 |
1265 |
1315 |
1100mm |
| 4 |
1220 |
1278 |
1330 |
1100mm |
| 5 |
1500 |
1560 |
1610 |
1320mm |
| 6 |
1435 |
1488 |
1540 |
1320mm |
| 7 |
1760 |
1810 |
1870 |
1600mm |
| 8 |
1805 |
1828 |
1880 |
1600mm |
Sun Hong paper machinery is professional manufacturer of spreader roll,guide roll ,press roll,couch roll,wire drive roll,breast roll,dandy roll,rubber roll etc.
70% of our core team members have the experience of repairing the international famous brands.
like Kickert, MountHope,KSK and Tecnomec3.
Our vision: Make Chinese equipment be proud of Chinese machine parts.
----Curved spreader rolls rubber covering.
----Curved metal spreader rolls
----Adjustable bow curved spreader rolls
----Special designs to customer' requirement
Installation
Optimum effect will be achieved by mounting the spreader roll as shown in Diagram 1(Fig.1).
Long entry distance -A- short output distance -E- The material web should always pass over the concave side of the Bowed Roller.
Dimension "A" should always be twice the exit span "E". Dimension "E" should be approximately two and a half times of the Bowed Roller.
Note: When install the Bowed Roller please ensure that it is aligned both vertically and horizontally onto the material web As shown in diagram1(Fig2).
Wrapping Angle
The wrapping angle "W" is determined by the type of material being processed.
The following angles of wrap are recommended
| Paper industry |
forming fabrics 25-20°; |
| Wet felts 30-60°; |
| Paper/board 15-30°; |
| Film and Foil industry |
Films PP and PA |
| 1-6 Micron 60-90°; |
| 8-20 Micron 45-60°; |
| More than 20 45°; |
| Metalised films 15-20° ; |
| Textile industry |
General 45-60°; |
| Extensible fabrics 60-90° |
Spreader rolls with rubber surface
1.This model of spreader rolls are wildly used ,whose bow are fixed.
2.We can supply different kinds of rubber sleeves to suit customer's application environment. The face of the rubber can be processed in special way ,such as cover grooving , tefion.
3.This series of rolls is used many materials: Plastic films,paper,foil,fabric and so on.
4.Compare to straight-line spreader rolls, this series roll has more stable spreading effect.
Detail Pictures
Spreader rolls with metal surface
1.Better high temperature resistance, abrasion proof, anti-adhesive, and easy to clean.
2.The highest speed:2000m/min.
3.Different surface processing methods, such as Sand-blasting,Chrome plated,cover grooving.
Special executions upon request.
4.Suitable machine: Cutter machine,Re-reeling machine,coating machine and paper machine.
SUN HONG GROUP
Sun Hong Group is a comprehensive company integrating planning, design, technical support, production, testing and training. We have a professional technical team to provide you with professional design and technical support as well as the best source of goods. After more than ten years of efforts, our products have been exported to 96 countries, and have more than 300 paper plants customers.
Sun Hong Group have a wide range of business, we can design and produce various customized products according to the different requirements of different customers. Mainly involving Paper Machine Clothing, Industrial Fabric, Paper and pulp machine spare parts, test equipment, etc. In addition, we also provide customers with update and transformation services to enhance customer output.
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