Extrusion head for pipes
AssigneeFriul Filiere S.P.A.
InventorValdi Artico
Life of this patent
Estimating the term…
Abstract
An extrusion head for pipes includes a first female body provided with a first through cavity and a male element inserted and supported in the first cavity, and defining with it a hollow space. A second female body is attached to the first female body and provided with a second through cavity. An interchangeable male body is attached cantilevered on the male element and positioned in the second cavity. The second female body and the interchangeable male body define a passage gap in fluidic communication with the hollow space. In the second cavity, a housing seating is made in which an adjustment ring is positioned, through which the interchangeable male body is positioned through, and adjustment members configured to adjust the position of the adjustment ring.
Claims13
An extrusion head for manufacturing pipes, comprising:
- a first female body (16) provided with a first through cavity (18),
- a male element (20) inserted and supported in the first cavity (18), and defining with said first cavity (18) a hollow space (24),
- a second female body (29) attached to said first female body (16) and provided with a second through cavity (30),
- an interchangeable male body (31) attached cantilevered on said male element (20) and positioned in the second cavity (30), said second female body (29) and said interchangeable male body (31) defining between them a passage gap (32) with a tubular shape and located in fluidic communication with said hollow space (24),
- wherein:
- in said second cavity (30) a housing seating (34) is made in which an adjustment ring (36) is positioned, provided with a through hole (37) through which at least part of said interchangeable male body (31) is positioned through,
- said through hole (37) and said interchangeable male body (31) define between them a part of said passage gap (32),
- said adjustment ring (36) is retained axially in said housing seating (34) by an abutment wall (57) and by a retaining wall (58) opposite said abutment wall (57), and
- said adjustment ring (36) comprises adjustment members (38) configured to adjust a radial position of said adjustment ring (36) in said housing seating (34).
An extrusion method for manufacturing pipes that provides to introduce polymer material through a hollow space (24) defined between a first cavity (18) of a first female body (16) and a male element (20) inserted and supported in the first cavity (18), and subsequently to make said polymer material transit from said hollow space (24) toward a passage gap (32) of a tubular shape and defined between a second through cavity (30) of a second female body (29) and an interchangeable male body (31) attached cantilevered on said male element (20) and positioned in the second cavity (30), the method comprising a step of adjusting at least a part of said passage gap (32) that provides to adjust, by means of adjustment members (38), a radial position of an adjustment ring (36) positioned in a housing seating (34) made in said second cavity (30), at least part of said interchangeable male body (31) being positioned through a through hole (37) of said adjustment ring (36), and said through hole (37) and said interchangeable male body (31) defining between them said part of said passage gap (32), said adjustment ring (36) being retained axially in said housing seating (34) by an abutment wall (57) and by a retaining wall (58) opposite said abutment wall (57).
Dependencies are inferred from the claim text.