Combination CTL Slitting Line

COMBINATION CTL-SLITTING LINES

Combination CTL-Slitting Lines F&P New [#3431]

New Combination CTL-Slitting Lines
1500mm x 3mm | for Galv. Steel in particular
F&P

Auto. CNC Programmable Slitting Heads or “Conventional” Slitter (with Tool Changer option) at choice
Coil Cars, Auto. Edge Guide, Punching Station…. optional

Process material: galvanized steel in particular
Material thickness range: .5mm – 3.0mm
Material break point: up to 410 MPa
Entry coil width max.: 1500mm
Entry coil weight max: 10 Ton
Entry coil OD max: 1400mm
Entry coil ID: 508mm
Exit coil OD max: 1400mm
Exit coil ID: 508mm
Recoiler capacity max: 6 Ton, alt. 10 Ton
Typical line speed: 40m / min

TYPICAL LINE DESCRIPTION & SOME FREQUENTLY PROVIDED OPTIONAL EQUIPMENT:

UNCOILER

With robust steel frame.
The shaft holds a mandrel with large tiles, that hydraulically expand on levers.
The rotation of mandrel is by A.C. motor, with inverter for loop control.
The uncoiler works in ‘loop’ mode when lower-thickness materials are processed. This allows a good alignment of material.
It works ‘in tension’ with thicknesses from 1.5 mm up, with the motor acting as a brake (with energy recovery).
Mandrel diameter: 455mm ÷ 530mm.
Max. coil weight: 10 Ton.

- HOLD DOWN (SNUBBER ARM): powered safety arm with containing rolls, hydraulically operated, installed on the uncoiler frame.
- SLIDERS: lower sliding guides at bottom, allowing the uncoiler displacement -- driven by a hydraulic cylinder and controlled by the operator. Stroke: ~ 150mm.

‘NO-STOP’ STRAIGHTENER

COIL THREADING TABLE with hydraulic lifting.

TWO ADJUSTABLE SIDE GUIDES, to keep the alignment of coil.

TWO PINCH-ROLLS, roll dia. 120mm; one roll rubber-coated, one in tempered and hardened steel.

PRECISION STRAIGHTENER with 7 rolls, dia.: 120 mm, supported by back-ups. (The 4 bottom rolls are powered, the 3 upper rolls idle).

After the straightener, the material forms a loop. No floor pit is required. A LIFTING TABLE, in 2 parts helps the material flow during the coil threading phase. It gets lowered, to a ‘stand-by’ position during the automatic operation of the line.

The ‘NO-STOP’ configuration prevents the strip from getting stopped while between rolls, avoiding marks on the material surface.

CUTTING TO LENGTH & SLITTING SECTION

ROLL FEEDER & ENCODER with two rubber-coated rolls, dia.: 120mm. Independent drive motor and positioner.

SHEAR, hydraulically operated.
Placed after the slitter, allows producing sheets of the wanted lengths -- even very short.
The blades have four cutting edges; they can get reversed up to 3 times, before having to re-sharpen or replace them.

AUTO. CNC-PROGRAMMABLE SLITTER with entry guides and 7 slitting heads, each head with two circular knives.

The heads, moving crosswise on screws, allow varying the widths of coils in very short time. They allow making 6 strips with minimum width: 115mm -- or 6 strips + 2 edge trims, whose widths can be less than 115mm.

The slitter concept is much different from any traditional slitter’s: each slitting comes with its two circular knives and rubber rings, no other tooling is required.
The setting-up and control of positioning of heads is automated, CNC-controlled.
The operator sets, by the main ‘touch-screen’ control panel the positions that each head has to reach. He can also recall “recipes” that were stored before in the line-memory.
The control automatically gives a correct sequence for the displacements of all slitting heads, avoiding ‘collisions’; it automatically unlocks heads and, moves them all to their positions so that the wanted strip widths are obtained.

The heads get automatically locked ‘in position’ by means of hydraulic clamps, that ensure stability and precision.
They are provided with also a blades-clearance automatic adjustment system, to optimize the cut quality in relation to the thickness of the material being processed.

When one or more heads are not in use, they can be moved to a “parking area” that is wide enough to even contain all heads.

Minimum width of cut between two circular knives: 116mm.
Knife diameter: 250mm.
Min. length of a cut sheet (= distance between the crop shear and the slitter): 1000mm.
(If shorter sheets than 1000mm have to be made, please advise.)

The heads are provided with a mechanical, simultaneous adjustment system of the axial clearance between slitting kives: automatic, to adjust all clearances at a time when the material thickness changes -- optimizing the quality of cuts and avoiding burrs.

ONE SET OF EXTRACTION-ROLLS at exit.
^ ALTERNATIVE TO THE ABOVE: A ‘CONVENTIONAL’ SLITTER

Slitter shafts diameter: 220mm; circular knives and spacers with diameter: 320mm (or different on demand).
The slitter max. speed is 100m / min, decreasing as the material thickness gets heavier.
Two coil-introduction rolls are mounted at slitter entry.

The slitter is mounted on a support, with movable bearing-rib actuated by universal joints. This allows simultaneous adjustment of the penetration of knives.
The keys on shafts are made to be symmetrically positioned.
The front support slides on sideways, to allow quick change of blades and spacers.
Blades, rings and spacers are normally included in our supply. We offer cooperation for their choice and purchase, if it is required.

The slitter variable-speed motorization and mainframe are suitable for allowing the maximum-possible number of cuts: 7 cuts at 3.0mm material thickness.

TWO-ARM SLITTER TOOLING TRANSFER TURNSTILE

Rotating by means of a special footstep-bearing; the column holds 2 double shafts (one arm of the turnstile, is for preparing the tooling set-up and loading it to slitter; the other arm for unloading the previousliy-used tooling set).
It comes with a motorized system to push off the tooling from slitter shafts and, insert the new tooling set.

SCRAP WINDERS

Two, with variable speed motor drive and adjustable tensioning.
The mandrels are with a fixed part and a mobile side, that can easily be removed to unload the recoiled scrap.
The scrap winders are, each independently-motorized and with an oscillating system allowing a good ‘distribution’ of scrap along mandrel. They are installed on rails placed at floor level.
Max. capacity: 200 kg / each winder.
Min. scrap width that can be wound, at thickness .8mm ÷ 1mm: 10mm.
Min. scrap width that can be would, at thickness 1mm ÷ 4mm: 10 times the thickness.

OPTION: PUNCHING STATION

Generally, it is placed before the shear and (typically) includes:
- a roll feeder;
- 2 punch presses, mounted one on each line side. Power ca. 12 Ton each press, and gap: 200mm;
- tools with 90mm diameter, one for each press; or more than two and with different features;
- the presses mounted on linear bearings, their displacement ‘manually’ actuated by handwheels. Once in position, they get mechanically locked and the integrated software actuates the hydraulic cylinder;
- a hydraulic power pack.

OPTION: STACKER & SHEET COLLECTION TABLE/S
With:
- a fixed side-support, on the “zero” line;
- a mobile support on opposite side to the above and, a mobile frontal support. --These both get ‘manually’ positioned by the operator, by means of handwheels;
- an air operated device for the cross- and side- positioning of sheets;
- manually-positioned separators.

After the cutoff operation, the sheet is supported by an “air-cushion”: perfect when thin gauge and/or surface critical materials are processed.
The height of the sheet collecting table/s is controlled by a photo-cell.

Max. bundle weight: 3 Ton.
Sheet width range: 500mm to 1500mm.
Sheet length range: 1000mm to 3000mm.
(Longer sheets than 3000mm can be handled in “ manual” mode.)

STRIP TENSION PAD / ROLLS & OPTIONAL EDGE GUIDE

“FELT” PAD
Placed at recoiler entry, it It is complete with an ARM WITH FAST-CLAMPING SEPARATORS --that the operator sets before beginning the recoiling operation.

Option: BRAKING ROLLS
250 mm dia., with A.C. motor drive and inverter.
The rubber-coated rolls also help introducing strips to the recoiler mandrel.
The A.C. motor^ provides a braking-regulation, that gives uniform tension to the strips to rewind.
The FELT PAD and the ROLLS can be used together, or alternatively: depending from to the material types and, also the experience of the operator.

^ This configuration suits for recoiling SLIT STRIPS. If full-width (unslitted) coils are to be rewound, too, the braking unit must be complete with also:
EDGE CONTROL Option
The rolls, mounted on an oscillating frame.
The control on the alignment of the ‘rounds’ during recoiling, obtained by means of a proportional photocell checking on the coil edge. A hydraulic system makes the strip braking unit oscillate, to correct the alignment of strips on recoiler.

RECOILER

A deflector roll and pneumatic telescopic tables are placed before recoiler, to help the insertion of strip leading edges to the mandrel clamp.
Of allsteel construction, the recoiler is driven by a geared motor with tempered gears in oil-bath.
The overhung mandrel shaft is of steel, manufactured without any ‘interruptions’ on the outside circumference around tiles. It hydraulically expands.
A hydraulic PUSH-OFF PLATE is installed on recoiler.
[Strapping (or application of tape) done by the operator, while coils still on recoiler.]

Recoiler max. capacity: 6 Ton or alt. 10 Ton.
Max. coil width: 1500mm.
Max. coil OD: 1400mm.
Coil ID: 508mm.
The recoiler is also complete with an OVERARM WITH QUICK-CLAMP SEPARATORS, automatic hydraulically-operated.

OPTION: COIL OFF-LOADING CAR

With hydraulic up/downstroking and motorized displacement on rails, mounted on a foundation in the floor. It does not require pit.

Car max. capacity 6 Ton or alt. 10 Ton.
Max. coil width 1500mm.
Transversal stroke, ca. 3000mm.
Vertical stroke, ca. 400mm.
Translation speed, approx. 6m / min .

CONTROL BOARD AND POWERBOARD

A numerical control that receives and displays the speed, acceleration, deceleration, position of slitting heads (when auto.-slitter^ provided), size and number of sheets/meters to be cut etc. … data.
Storing information and setting “recipes” is possible, in the memory.
The display is of the “touch screen” type, with a graphical representation of the complete line. The operator can easily set the parameters, verify the operating mode of the line, insert specific data a.s.o.
Some selectors also on the panel, that are for: starting the line, activating “emergencies” or making specific operations.
The line is connected to our customer technical support service by a remote-assistance system. Upon user’s request and authorization, the remote-connection enables immediate interventions to set parameters, detect alarms, check production… without intervention ‘on the spot’.

PHOTOS & IMAGES

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