Slitter-rewinder

Rewinding unit

Two differential friction shafts on rewinders, OD 60mm, dynamicaly balanced, hardened flange Appropriate for friction rings of different sleeve diameters.

Roll diameter up to 620mm (for the model R10-620) / 850mm (for the model R10-850)

Max. roll weight on one shaft: 400kg

Digital tension control via I/P proportional pressure valve

Max. tension for both shafts in total: 400N (at min. diameter), 250N (at max. diameter)

Taper curve adjustable in 16 points (graphical representation on HMI)
Memory for 3 different “taper” characteristics

Lay-on rollers (EPDM rubber) for both shafts (automatically seaprately digitaly adjustable pressures)
Additional aluminum rollers (alternative to rubber-coated rollers)

Pneumatic clamping of slitted strips (while changing cores)
Automatic stop at set-length or set-diameter

Lasers for core positioning system on both shafts

Unloading stand with two mandrels, manually pivoting, length 1200mm
Two double bar rewind antistatic devices

Unwinding unit

Unwinding unit is completely separate from main machine unit

There is a safe pass between these two units for operator’s easy job setting and monitoring during run

Shafless, pneumatic activated, core chucks for 3’’ and 6’’ (76mm and 152mm) core I.D.

Roll diameter up to 1300mm
Servo driven unwinder perfectly maintains compensation roller in reference position (measured by precise linear magnetic encoder)

Digital tension setpoint via I/P proportional pressure valve

Tension range: 20-350N

Web break detection

Splice table after unwinder

Hydraulic roll loading (lifting)

Electromechanical roll axial gripping (frequency inverter)

Optional installation of a 100% inspection system

Slitting section

Razor slit in air/groove

Automatic vertical razor blade oscilating (moving up/down during run)

Manual knife positioning

Adjustable material height to female knife shaft Driven lower roller

Slitting section prepared for optional later installation of rotary knives system

Web line/edge guide

Web edge/line guide system after unwinder

Infeed section

Servo driven infeed rollers (S-wrap)
Siemens Sinamics S120 servo drive system

Bowed (banana) spreader roller (driven). EPDM rubber covered. Adjustable while running production

All idle rollers are cork-rubber (EPDM) covered and dynamically balanced

Fine leveling adjustment of the auxiliary roller before the S-loop (for improved material tension)

Remote service

Industrial security router for internet remote access (service and diagnostics).

Electrical cabinet and equipment

All electrical equipment from one manufacturer- SIEMENS (servo motors, servo regulators, PLC and control units, low-voltage equipment, HMI device)

Trim Extraction System

The edge-trim is collected at the slitting section with two nozzles that remove the waste trim from the machine using Venturi vacuum system
Frequency regulation of blowing power