ES262495U - Perfected device for side feeding in extrusion heads. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improved device for the lateral feeding in extrusion heads, which being intended for the extrusion of plastic tubular film, is essentially characterized in that it is constituted from a hollow cylindrical body in functions of rotation base, in which it is mounted internally a tubular rotating shaft that emerges to the outside, above and below, from such a base of rotation and whose rotating shaft comprises internally and in a solid manner a conical spindle which ensures the feeding of the molten stem in a uniform manner in all points of the periphery; it being provided that said rotary shaft already provided on its periphery with a series of openings or windows made in an annular portion thereof, through which the entrance of the molten plastic to the conical spindle itself responsible for distributing the flow upwards occurs, said windows or openings being opposite another opening made in the base of rotation to which the end of a tube endowed internally with a kind of spindle in charge of dragging the molten plastic from the corresponding conventional machine to the openings or in a lateral manner accesses it. Windows of the rotating tree, thus producing a delivery of the material whose address is 90º with respect to the input direction itself; with the particularity that optionally it is possible to arrange a bearing bearing between the rotating shaft itself and the rotation base. (Machine-translation by Google Translate, not legally binding)