Calculation Method Of Slitter Shafts For The Upper And The Bottom Knife

Slitting machine is a commonly used equipment in industrial production, which is a pre-press and post-press equipment that slits a large roll of paper, film, non-woven fabric, aluminum foil, mica tape and other thin materials into small rolls of different widths, and is often used in papermaking machinery and printing and packaging machinery.

In the design and maintenance process of the slitter, the calculation of the cutter shaft is crucial. The following is a detailed introduction to the calculation method of the cutter shaft of the slitter. Correct calculation of the cutter shaft can ensure the stability and cutting quality of the slitting machine, improve production efficiency, and reduce maintenance costs. The calculation of the cutter shaft of the slitter mainly involves the length, speed, load and balance, and the following aspects:
First of all, the calculation of the length of the tool shaft is the basis. The length of the cutter shaft needs to be determined according to the working width of the slitting machine and the cutting requirements. Generally speaking, the length of the knife shaft should be slightly larger than the maximum width of the material to ensure the accuracy of the cut. It is calculated as follows: tool shaft length = maximum width of material + tool thickness + safety margin.
Secondly, the calculation of the rotational speed of the tool spindle is also very important. The calculation of rotational speed takes into account the slitting speed, the thickness of the material and the quality of the cut. Too high a speed may cause an uneven cut, and too low a speed will affect productivity. The formula for calculating rotational speed is: rotational speed = (slitting speed × 60) / (π × tool shaft diameter).
Then, the load calculation of the tool spindle should not be overlooked. The tool shaft load mainly includes the weight of the tool, the material tension and the friction during the cutting process. The formula for calculating the load of the cutter shaft is: load = tool weight + material tension + friction. The accurate calculation of the load helps to select the appropriate motor and bearings to ensure the stable operation of the slitting machine.
Finally, the balance of the knife spindle is also an important factor in ensuring the quality of the cut. An unbalanced spindle will vibrate when rotating at high speeds, affecting the cutting effect. The calculation of the balance of the cutter shaft usually requires a professional balancing instrument to complete.

What is the arrangement structure of the spindle and cutter shaft of the paper tube slitting machine?
The middle part of the paper tube slitting machine is provided with a spindle for processing paper tubes, the front end of the spindle is fixed on the base using a group of bearings, and a belt pulley is installed in the middle of a group of bearings; Compressed cylinder is installed in the position close to base, and the upper end of support rod of cylinder is provided with a set of support rod bearings, supports spindle.
The upper end of the paper tube slitting machine is provided with a main knife shaft, and a plurality of blades are arranged on it, and are arranged according to a certain clearance; The support frame of the main cutter shaft is also arranged at the top end of the paper core slitting machine, and a support cylinder is installed in the middle of the support frame.

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