Cut-to-length lines for sheets - bollina.it - Bollina Srl

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Cut-to-length lines for sheets

"START-STOP" STRAIGHTENING AND CTL LINES


The LTB straightening and cut-to-length lines are characterized for the operation with "Start-stop" system with compact straightener and crosswise cut shear.
The straightener work as a feeder and performs the positioning and stop for the crosswise cutting.
Possibility of integration of the lengthwise cut unit with cyrcula knives (multi-blankng) for maximum versatility of use, optimization of the sizes and reduction of the scraps.
For this reason the "Start-Stop" cutting lines are suitables for ferrous / not delicate materials (galvanized, hot and cold rolled, etc.) and for use in roofing / cladding market, light metal structures, molding and / or stamping etc.

  • Standard working widths of 1000, 1250, 1500 and 1850 mm
  • Thicknesses range from 0.3 to 3 mm (2 mm with Uts / Yield 650/320 MPa).
  • Coils weights from 3 to 25 ton
  • Straightening unit with 4, 5, 6 and 10 rolls without backup rolls.
  • Working speed up to 40 m/min and cutting tolerances of +/- 0.2 mm.
"NO-STOP" STRAIGHTENING AND CTL LINES


The RTB straightening and cut-to-length lines are characterized for the operation with "No-stop" system or "Roll-Feeder" system with  independent and continuous feed straightener, synchronization loop and roll-feeder with crosswise cut shear. Possibility of integration of the lengthwise cut unit with circular knives (multi-blankng) for maximum versatility of use, optimization of the sizes and reduction of the scraps.
The straightener is separated from the roll-feeder and allows to not stop the material inside the rolls during the stop for the crosswise cut, to avoid waves or markings on material's surface. For that reason the "No-Stop" system lines are particularly suitable for the treatment of delicate materials and sensitive surfaces (stainless steel, aluminum, prepainted steel, etc.).

  • Standard working widths of 1000, 1250, 1500 and 1850 mm
  • Thicknesses range from 0.3 to 3 mm (2 mm with Uts / Yield 650/320 MPa).
  • Coil weights from 3 to 25 ton
  • Straightening unit  with 4, 6 and 10 rollers  without backup rolls.
  • Working speed up to 40 m/min and cutting tolerances of +/- 0.2 mm.
"FLYING SHEAR" CUTTING LINES


The CVB cut-to-length lines are different from LTB "Start stop" and RTB "No-stop" lines since they does not perform the stop for the crosswise cut but is the shear that synchronize and perform the crosswise cut "on the fly" and for this reason they are able to guarantee a significant increase in productivity compared to the LTB and RTB lines (+ 83.4% on 2000 mm length; + 54.5% on 3000 mm length; + 48.8% of length 4000 mm).
The CVB lines can be equipped with straightening or levelling units and for this reason are indicated for the treatment of all types of materials, both normal and delicate - sensitive surfaces (stainless steel, aluminum, pre-painted steel, etc.).

  • Standard working width of 1500 mm
  • Thicknesses range from 0.3 to 3 mm (2 mm with Uts / Yield 650/320 MPa).
  • Coil weights from 3 to 25 ton
  • Straightening unit with 4, 6 and 10 rolls without backup rolls.
  • 4HI and 6hi levelling units from 17 to 21 rolls.
  • Working speed up to 70 m/min and cutting tolerances of +/- 0.2 mm.

LEVELLING AND CTL LINES


The SPB levelling and cut-to-length lines are characterized for the "no-stop" operation system (Roll-Feeder) with independent with continuous feed levelling unit, synchronization loop and roll-feeder with crosswise cut shear. Possibility of integration of the lengthwise cut unit with circular knives (multi-blankng) for maximum versatility of use, optimization of the sizes and reduction of the scraps.
The precision levelling machines are supplied with 4hi configuration (for ferrous and not delicate materials) and 6hi configuration (for delicate materals and sensitive surfaces). Thanks to the several adjustment possibilities of the rolls and back-up rolls, the SPB lines are able to ensure high flatness results even if starting from not first choice materials.

• Standard working widths of 1000, 1250, 1500 and 1850 mm
• Thicknesses range from 0.3 to 3 mm (2 mm with Uts / Yield 650/320 MPa).
• Coil weights from 3 to 25 ton.
• 4hi and 6hi levelling unit from 17 to 21 rolls.
• Working speed up to 40 m/min and cutting tolerances of +/- 0.2 mm.


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