Open-end spinning device and method for producing a transport channel

摘要

An open-end (OE) spinning apparatus has a revolving rotor in a casing with a lid (21) opposite the rotor. The lid comprises a basic piece carrying a duct (22), for conveying individual fibres to the rotor. The duct is a component made separately from the lid and fitted into the basic piece and is a metallic tube which is pressed into shape by an internally applied pressurised medium. Also claimed is a method of making the transport duct for the feeding of fibres, sliver or threads in textile machines, e.g. for OE-spinning machines and in particular for OE-rotor spinning machines as above. The duct is pre-formed as a tube-shaped blank of ductile material, laid in an enclosing die and subjected internally to a medium so strongly pressurised that the blank expands to its finished shape.