1. Frame and base

This automatic slitting machine stands on a one-piece welded steel frame measuring 1,250 × 1,150 × 1,350 mm and weighing 600 kg. Because the slitting station, the guide rollers and the winding shafts share one reference structure, the ±0.15 mm cutting tolerance stays repeatable from the first metre of a roll to the last — at 110 m/min, not only at low speed.

2. Operating panel

Every parameter the operator changes during a run sits within reach of one standing position: the button panel with its four switches, the meter board and the digital display for set length, counted metres and piece count. Speed is set with a single dial that signals the 1.5 kW frequency converter, so nobody has to open the electrical cabinet in the middle of a run.

3. Slitting unit

The slitting station is the only part of the machine that removes material, and it sets the tolerance for everything downstream. The blades run against a driven pressure roller across a maximum web max-width='100%' width of 350 mm, and the ±0.15 mm result is what decides whether a printed label stays centred inside its own cut edge after the roll has been converted.

4. Photoelectric web guide

Edge position is held by a closed loop rather than by a fixed guide rail. A photoelectric head reads the web edge, the guide board compares that signal with the target position, and the guide motor brings the material back into line. Because the correction runs continuously, drift caused by an out-of-round roll or by uneven unwind tension is taken out as it happens instead of accumulating over a long run.

5. Count number and meter

Finished roll length is controlled by measurement, not by eye. The meter board counts the running length on the web path, and the machine stops automatically when the target length or the target piece count is reached. That removes the two most expensive habits on a slitting line: stopping short and having to splice on extra metres, and over-running a roll that then has to be re-counted by hand.

6. Tension control

Tension is not handled by one brake for the whole web. Three magnetic-particle channels with their own controllers let the unwinding and winding zones hold different tensions at the same time, so the same machine can run a light label stock without stretching it and a heavier liner without letting it slip.

7. Magnetic powder clutch and brake

Each magnetic-particle unit is rated 2.5 kg. Torque is transmitted through magnetic powder in the gap rather than through friction plates, so the tension a shaft delivers stays proportional to the control current instead of depending on the speed the shaft happens to be running at. That is why web tension holds steady at 20 m/min and at the machine's full 110 m/min alike — and why the transmission has no wearing friction surfaces that need periodic re-setting.

8. Unwinding shaft

The unwinding shaft carries rolls up to 500 mm in diameter and feeds a web up to 350 mm wide. Loading and unloading are a single movement on the shaft end, which makes a 500 mm roll of label stock a one-operator job instead of one that waits for a second pair of hands.

9. Rewinding shaft

Two rewinding positions accept finished rolls up to 500 mm in diameter, each driven through its own magnetic-particle channel and controller. Because the two positions are set independently, the tension of each finished roll can be matched to its own max-width='100%' width and material rather than sharing one common setting.

10. Main motor and drive

The main motor is rated 1.5 kW and runs from a 1.5 kW frequency converter on a 220 V supply. Speed is therefore set electronically instead of through a mechanical variator: the machine accelerates to its working speed and back down without the web jerking, and holds up to 110 m/min for the whole roll — the condition that keeps the ±0.15 mm tolerance constant from the first metre to the last.

In summary

This machine combines a 600 kg frame of 1,250 × 1,150 × 1,350 mm, a 350 mm web max-width='100%' width, a ±0.15 mm slitting tolerance and a running speed of up to 110 m/min in a unit that occupies just over 1.4 m² of floor space. It is a slitting line specified for converters who cut label stock to a customer's exact length, not approximately.