Feeding arm

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.