Extrusion lines

Insulation of conductor
The following step in the production of conductors consists in applying an insulation layer around a flexible conductor made of various fine bare wires or around a sole rigid bare wire. This process is carried out on an extrusion line (insulating line) which includes an extruder fed continuously with granules of PE, PVC or any other insulating material. The machine will be mixing and heating the granules until they reach the correct temperature and viscosity. The wire will go through the cross head on the extruder in order to get the insulation layer of the desired colour. After this it will go through a trough filled with running water which will be cooling the applied material and thus solidifying it very quickly. The conductor will be going through various testing equipment in order to detect possible faults (spark tester, diameter controller, etc.) This process is generally realized at high speed.

Inner sheathing and outer final sheathing
Sometimes before the armouring process (with steel, copper or aluminum wires) is carried out, some cables made of assembled conductors might need an inner sheathing which will be applied on an extrusion line of larger capacity in order to give the cable a smooth finish. In the case the cable does not need this inner sheathing (e.g. because it is not armoured) the outer final sheathing will be applied directly.

1.- EXTRUDERS
High performance and user friendly machines, all types of extruders are available on our catalogue, either for plastic or for rubber (silicone). They are all manufactured with top quality components, using the latest technology.

EXTRUDERS FOR PLASTICS


EXTRUDERS FOR PLASTICS
EXTRUDER CAPACITY kg/h
Ø Screw PVC
60 200
90 450
120 800
150 1100
EXTRUDER
Ø Screw XLPE
60 90
90 200
120 450
150 675
EXTRUDER
Ø Screw LSHF
60 110
90 160
120 370
150 550
EXTRUDER CAPACITY kg/h
Ø Screw PVC XLPE LSHF
60 200 90 110
90 450 200 160
120 800 450 370
150 1100 675 550
We manufacture the whole range of extruders for plastics (PVC – PE – XLPE – LSHF) with diameters of screws of 60 – 90 – 120 – 150 mm and L/D ratios from 24 up to 26 (or upon customer’s requirements). All our extruders are supplied with stainless steel feeding hopper, hopper loading system and collar for cross head fixing. Optionally we can also supply, gravimetric dosing devices, colour dosing devices, etc.

AUXILIARY EXTRUDERS


AUXILIARY EXTRUDERS
Upon customer’s request, we can also manufacture auxiliary extruders (yellow – green, etc.) with 30 or 45 mm screw dia. and 24 L/D ratio for our insulation lines.

EXTRUDERS FOR RUBBER (SILICONE)


EXTRUDERS FOR RUBBER (SILICONE)
EXTRUDER CHARACTERISTICS
Ø Screw Screw speed
90 mm 75 RPM
120 mm 60 RPM
150 mm 60 RPM
EXTRUDER
Ø Screw Output
90 mm 300 kg/h
120 mm 550 kg/h
150 mm 900 kg/h
EXTRUDER
Ø Screw Motor
90 mm 75 kW
120 mm 150 kW
150 mm 175 kW
EXTRUDER CHARACTERISTICS
Ø Screw Screw speed Output Motor
90 mm 75 RPM 300 kg/h 75 kW
120 mm 60 RPM 550 kg/h 150 kW
150 mm 60 RPM 900 kg/h 175 kW
We manufacture a wide range of extruders for rubber (screws of different lengths and L/D ratios from 16 up to 20). See main specifications hereunder.
2.- EXTRUSION CROSS HEADS

EXTRUSION CROSS HEADS


EXTRUSION CROSS HEADS
EXTRUSION CROSS HEADS (2)
EXTRUSION CROSS HEADS (3)
We manufacture and we supply cross heads for PVC, PE, XLPE, PTR, etc. with heating by electric resistances. We also manufacture cross heads for rubber and silicone with temperature regulation by liquid.
Dimensions ranging from 14/20 up to 180/200, with die-holder mechanical positioning regulation. Possibility of monolayer, bilayer and triple layer. Skin option, fringes, etc. Manual system for die centering. Optionally: “0” positioning system.
We also manufacture links, purge systems, support trolleys, collars, etc.
Possibility to adapt the cross head to the tools of the customer.
3.- PULLING CAPSTANS or CATERPILLARS

PULLING CAPSTANS


PULLING CAPSTANS
We manufacture upon customer’s request the whole range of motorized pulling capstans, simple or double wheel, grooved or not or with flat belt. Wheel diameters can vary from 600 up to 2000 mm for cable diameters up to 35 mm and maximum speeds between 30 and 600 m/min. depending on the type of extrusion line.

PULLING CATERPILLARS (CATERPULLERS)


PULLING CATERPILLARS (CATERPULLERS)
MODELO OT-800 OT-1500 OT-2000 OT-2500
Fuerza de tiro (kg) 800 1500 2000 2500
Ancho de correa (mm) 100 120 160 160
Ø cable (mm) 5-50 20-80 50-100 100-150
Velocidad (m/min.) Máx. 180 Máx. 150 Máx. 100 Máx. 60

Our caterpullers with independent motor, can be giving or pulling caterpillars. They are composed of 2 pulling flat belts which are pressing on the cable through 2 rows of pneumatic cylinders equipped with cylindrical rollers. Pulling or giving caterpillars, with anti-return brake or motorized anti-return system. All elements are reversible in order to allow a 2-way working direction.
4.- COOLING TROUGHS

COOLING TROUGHS


COOLING TROUGHS
We manufacture for our extrusion lines all types of cooling troughs. Generally the first section of the trough is telescopic in order to leave enough space for the maintenance of the cross head, and the last section of the trough has a drying device. The different models of troughs are the following : single pass section, multipass section, multipass section with motorized pulleys, cold water section, and hot water + cold water section.
5.- ACCUMULATORS

ACCUMULATORS


ACCUMULATORS
ACCUMULATORS (2)
ACCUMULATORS (3)
We manufacture horizontal and vertical accumulators depending on the needs of the customer and depending on the type of extrusion line where they will be installed. For instance for lines with automatic or semi-automatic double spooler, fast lines for low, medium and high voltage, or even dancers to be installed between the different motorized elements of the line (caterpillar, spooler, etc.).
6.- ANCILLARY EQUIPMENT AND TOOLINGS

ANCILLARY EQUIPMENT AND TOOLINGS


ANCILLARY EQUIPMENT AND TOOLINGS
ANCILLARY EQUIPMENT AND TOOLINGS (2)
ANCILLARY EQUIPMENT AND TOOLINGS (3)
We manufacture and supply all types of ancillary equipment which are needed for our extrusion lines:

  • Toolings (tips and dies)
  • Meter-counters
  • Supports for re-shipment pulleys
  • Wire-guides
  • Dryers
  • Spark-testers
  • Diameter control devices (cold or hot), etc.