What Factors Affect the Performance of the Rewinder Circular Blade

The rewinder circular blade is a critical slitting component installed on the rewinder machine, used to slit wide paper rolls into smaller rolls that meet specific requirements. During high speed continuous operation, the sharpness, wear resistance, and operational stability of the blade directly affect the paper rolls' edge quality, production efficiency, and subsequent processing results.

Proper selection and use of the rewinder slitting circular blade can significantly increase the production efficiency of the finished product.

Factors Affecting the Performance of the Rewinder Circular Blade

Circular Blade Material Selection Determines Wear Resistance

The material used in the blade is a key factor affecting the durability of a rewinder circular blade.

SKD11 alloy steel, due to its good wear resistance and edge retention, is commonly used for the rewinder blade for slitting ordinary paper, film, and packaging materials.

For high speed reel machines, rewinder circular blade materials should have higher hardness, wear resistance, and thermal stability to maintain cutting performance during continuous operation.

Heat Treatment Process Affects Hardness and Toughness of Rewinder Circular Blade

Generally, the production of the rewinder circular blade needs to undergo the heat treatment process to achieve a balance between hardness, wear resistance, and toughness.

Usually, the hardness of the cutting edge after quenching can reach HR55~60.

Therefore, rewinder circular blades made of highspeed steel for high speed slitting machines require vacuum heat treatment to achieve the ideal hardness and toughness.

Edge Angle Influences Cutting Efficiency and Blade Life

The sharpening precision and cutting edge angle of a rewinder circular blade also affect its lifespan.

Typically, rewinder circular blades employ a single-edge design, with a sharpening angle of approximately 30°.

Generally, the beveled surface of the rewdiner blade experiences significant friction during cutting. Under the friction of the paper edge, the beveled surface of the rewinder circular blade wears down quickly.

Considering the cutting resistance of the material being cut, the sharpening angle should be as small as possible.

How to Maintain High Cutting Accuracy of the Rewinder Circular Blade

Use High Quality Rewinder Circular Blade

Choosing a high quality rewinder circular blade is fundamental. A high quality slitting blade typically boasts excellent wear resistance and a sharp cutting edge, maintaining consistent cutting performance over extended use. This not only reduces resistance and heat buildup during cutting but also improves cutting accuracy.

Furthermore, regularly inspecting and replacing worn rewdiner circular blades helps ensure the cutting edge remains sharp and avoids cutting errors caused by blade wear.

Control Cutting Speed According to Paper Properties

An appropriate cutting speed ensures stable contact between the rewinder circular blade and the paper during cutting, preventing cutting errors caused by excessively fast or slow speeds.

In practice, the appropriate cutting speed should be selected based on the paper's material, thickness, and cutting requirements to achieve the best cutting results.

Ensure Stable Blade Holder Installation

If the rewinder circular blade becomes loose or shifts during cutting, it will result in an uneven cut surface and even serious problems such as paper breakage.

Therefore, when installing the rewinder slitting blade, it is essential to ensure the holder is secure and reliable, preventing loosening due to vibration or impact.

Furthermore, regular inspection and maintenance of the rewinder circular blade are necessary to ensure it is always in optimal working condition.

Adjust the Cutting Pressure of the Top and Bottom Rewinder Circular Blade

In slitting with a rewinder circular blade, the fit between the top and bottom blades is a crucial factor.

If the fit is poor, insufficient cutting pressure will prevent the slitting circular blade from effectively cutting into the paper, easily leading to burrs, tears, or incomplete cuts. Conversely, excessive cutting pressure will increase friction between the blade and the paper, accelerating wear and reducing its lifespan.

Therefore, in actual production, the pressure between the top and bottom rewinder circular blades must be adjusted appropriately based on the paper type, thickness, and equipment speed to ensure stable and continuous cutting.

Regularly checking the blade installation position and bottom blade wear also helps ensure the quality of the produced paper.

Regularly Maintain Rewinding Equipment

The stability and rigidity of the slitting equipment directly affect the operating condition of the rewinder circular blade.

Improving the overall rigidity of the equipment effectively reduces vibration and noise generated during high speed operation, preventing a decrease in cutting accuracy due to blade misalignment.

Furthermore, regular maintenance and calibration of the slitting equipment are crucial for ensuring cutting accuracy.

The blade holder, blade mounting components, and other critical components should be regularly inspected for wear, loosening, or misalignment, and adjustments or replacements should be made promptly.

Simultaneously, calibrating the position, clearance, and operating status of the slitting blade using professional testing tools ensures that the rewinder circular blade maintains stable cutting accuracy during operation, reducing issues such as paper edge burrs and cutting deviations.