Extrusion die

摘要

An extrusion die (1) has a fixed solid body (2) with an entry part (2) for the plastified extrusion material, partic. foodstuffs, and a housing (4) enclosing a rotating barrel (5) within which is an exit channel (6). Also in the housing is a distribution chamber (7) of revolution symmetry connected upstream with the entry part (3) and downstream with the exit channel (6). An external surface (8,9) of the barrel (5) co-operator via axial and radial bearings (10,11) with a corresponding surface (12,13) of the housing. Rotating annular sealing rings (15) provide a sealed joint between the housing and rotating barrel are made of stainless steel powder reinforced PTFE. The plastified material entry (3) extends transversally in the die body (2) and exits laterally in the distribution anti chamber (14) while the filling entry (26) extends axially in the body; and through the anti-chamber and distribution chamber (7) in the form of a coaxial tube (28) joined to the body.