Patent ID: 6892617

Claim:
A feeding arm for production of glass fiber reinforced plastic pipes, comprising: a) at least one pipe running along the length of the feeding arm from a filling station at a first end of the feeding arm, where starting materials, including glass fiber yarns, sand, resin and catalyst are supplied, to a head at a second output end of the feeding arm, where the glass fiber yarns are cut and discharged radially together with the sand, resin and catalyst; and b) a cutting device arranged within the second output end of said feeding arm for cutting said glass fiber yarns ( 40 ), which thereafter are discharged radially with the sand, resin and catalyst, said cutting device including at least a first roller ( 10 ), a second roller ( 20 ), and a third roller ( 30 ), which are arranged within said feeding arm axially and parallel to one another, wherein said first roller ( 10 ) is provided with a respective surface ( 10 . 1 ) profiled by ribs ( 12 . 1 ) extending in an axial direction of the first roller ( 10 ) and is arranged such that said first roller rolls off with said respective surface ( 10 . 1 ) on said second roller ( 20 ) which revolves in a direction opposite that of the first roller ( 10 ); and said third roller ( 30 ) having a respective surface ( 30 . 1 ) provided with a plurality of knives ( 36 ) extending in a spaced manner in the axial direction of the third roller ( 30 ) and arranged such that said third roller rolls off with said respective surface ( 30 . 1 ) on the second roller ( 20 ) which revolves in a direction opposite of the third roller ( 30 ), so that the glass fiber yarns are cut into sections, according to a distance of the knives.