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CONTINUOUS FILAMENT WINDING MACHINE
The manufacturing of the GRP pipes on the Continuous Filament Winding Machine is carried out on a continuously reforming mandrel, Which is obtained by winding a steel tape over a horizontal shaft. The steel tape is
forced to translate in the axial direction when the mandrel rotates.The materials are applied onto the moving mandrel.
A first layer of polyester film is wound on the mandrel, followed by a surface veil
and chopped strand mat. Filament winding of continuous rovings, together with
chopped glass, sand, axial reinforcement (if needed) and polyester resin are
applied simultaneously. Finally a new layer of surface veil is applied (if required).
Hardening of the resin takes place in a curing oven. Then the pipe is automatically
cut to desired lengths and finished by the cutting unit calibrating unit.
The diameter of the mandrel can be modified according to requirements of the pipe diameter.
The Calibrating, chamfering and cutting operations are automatically carried-out by
means of diamond plated tools, placed after the curing oven, on a trolley
translating at the same speed of the pipe.
The control and supervision of the production cycle is provided by a computer
holding a CNC, which is connected to a PLC. The CNC controls the operation of
the filament winding machine through the following parameters:
Speed of the mandrel
flow of liner resin and catalysts
flow of structure resin and catalysts
flow of sand or inert material
velocity of the glass choppers
control of temperature of the pipe in the oven
cutting length
end machining
weight of pipe
Production Pipe dimensions
Minimum Pipe length: from 500mm
Nominal pipe diameters: from 400 to 2400mm
Machines
One machines for the production of pipe from dia 400 mm to dia 1400 mm.
One machines for the production of pipes from dia 900 mm to dia 2400 mm.
SM Line| ML Line| MX Line| Continuous Line| Machinery
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