LESKO CL

LESKO CL is a verified construction used to multi-faceted refinement of labels. The main advantage of the structure is full flexibility in configuration of functions in accordance with the customer's needs. We "build" this machine together with customer.

Basic modules, the machine is equipped with are:

• unwinder module
• rotary die cutting module
• printing module
• rewinder module

The main advantage of the modular system is possibility of easy extension in the future. All modules are synchronized with the servo motor and controlled with one multi-axis driver.

TECHNICAL DATA:

• max. web width                                                             380 / 440 mm
• max. speed                                                                     220 m/min
• max. speed (printing)                                                  150 m/min
• max. unwinding diameter                                           800 mm
• unwinder and rewinder pneumatic spindle            Ø 76 mm
• max. rewinding diameter                                            Ø  450 mm
• max. rewinding diameter - option                            Ø  600 mm
• power supply voltage                                                   3x400 V
• frequency                                                                        50 Hz
• installed power                                                              (depends on type)
• average air requirement                                              1 m³ ; 6 bar
• weight of single module                                               (depends on type)
• size of single module 380 (L x W x H)                     800 x 1250 x 1800 mm
• size of dual module 380 (L x W x H)                        1600 x 1250 x 1800 mm
• size of single module 440 (L x W x H)                     800 x 1350 x 1800 mm
• size of dual module 440 (L x W x H)                       1600 x 1350 x 1800 mm

control:

• Mitsubishi microprocessor control
• control panel with colour touchscreen 8” on movable arm
• additional simple panel on the web-connecting table

motors:

• asynchronous motor - the main drive
• electromagnetic powder brake
• servo motor on a rewinder

optional:

• servo motor on unwinder
• servo motor on die cutting unit
• servo motor on printing unit

sensors:

• current meters and labels electronic counter  
• luminal sensor
• ultrasonic sensor of end of the roll

optional:

• US sensor for transparent labels
• sensor for detecting the flags

UNWINDER MODULE:

• max. roll diameter                        800 mm
• electromagnetic powder brake
• pneumatic expansion spindle     Ø 76 mm + special system with transport rollers for easy loading
• BST web guide system
• web-connecting table equipped with pneumatic clamp blocks

DIE CUTTING MODULE (MAIN):

• Nip-roll with pneumatic clamp
• servo motor on die cutting unit
• max. working width of cylinder               380/440 mm
• max. circumference of cylinder               200 T
• gap control system GapMaster from Kocher+Beck

optional:

• rotary die cutting unit type LESKO DIE with anvil supporting driven shaft
• max. 3 die cutting units
• guillotine unit
• any gap control system offered in the market
• the hydraulic pressure control system of the magnetic cylinder (precision and safety)
• adapters for other magnetic cylinders
• adaptation of the whole die cutting unit for customer's cylinders
• semi-roatary die cutting in register (work with different flexible dies on the same magnetic cylinder)
• waste matrix rewinder (max. roll diameter 500 mm)
• rewinders: semi-turret type

FLEXO PRINTING MODULE:

• max. working width of cylinder       380/440 mm
• max printing width                            370/420 mm
• lateral shift adjustment                     +/- 5 mm
• longitudinal shift adjustment          +/- 5 mm
• max printing speed                            150 m / min
• duct roller
• anilox grid raster                               160L / cm, 60 ° 6,5cm3 / m2
• rotating anilox during standstill
• IR dryer 3000W with the side waste exhauster
• IR lamp

optional:

• single UV lamp from UV-ray or GEW; maximum power: 160W / cm (fan, power supply unit, operator panel)
• double UV lamp from UV-ray or GEW; maximum power: 160W / cm (2x fan, 2x power supply unit, 2x operator panel)
• web inverting unit enabling printing on the other side of the material

REWINDER MODULE:

• max. winding diameter               Ø 440 mm
• pneumatic expansion spindle    Ø 76mm (1 pc.)
• adapted to rewind the entire roll from the unwinder
• automatic correction of tension of wound material

optional:

• rewinder module installed on main module
• spindles with diameters from Ø 19 to Ø 76mm
• adapters for spindles with diameters from Ø 76 to Ø 152 mm
• additional rewinder (max. winding diameter on both rewinders - Ø 450 mm)

ADDITIONAL EQUIPMENT:

• lamination unit installed on main or printing module
• sheeting unit installed on main module
• sheet receiving table installed on rewinder module
• pneumatic clamp of the end of web
• footswitch for the machine control
• shear cutting knives unit:
  • knives for scissor system cutting (type 3G)
  • pneumatically inserted and removed
  • 3 sets of knives + the possibility to add following
  • min. cutting width 10 mm
  • easy disassembly

• razor blades knives unit:
  • 5 knives + possibility to add following
• crush cutting knives unit:
  • pneumatically inserted and removed
  • 3 knives + possibility to add following
• additional rewinder's expansion spindles:
  • diameters: Ø 25 mm, Ø 40 mm, Ø 50 mm, Ø 76 mm
• the side waste exhauster