AN APPARATUS AND METHOD FOR ADJUSTING A MANDREL AND A KERNEL WHILE PRODUCING A PLASTIC PIPE

摘要

The present invention relates to an apparatus for producing pipes of a mouldable material, preferably plastic, comprising an extruder, a cylindrical mould comprising chill moulds (4, 5), a mandrel (8) inside the extruder and a kernel (9) as an extension of the mandrel. The mandrel is attached at its front end to the extruder. The mandrel (8) and the kernel (9) can be kept concentric with the extruder and the mould if the mandrel and the kernel are joined to each other in such a manner that the angle between their centre lines is adjustable.