US 11,865,761 B2
Extrusion head and method for producing an elongated hollow body by means of said extrusion head
Wieland Hoffmann, Hannover (DE); and Andreas Grothe, Bergen (DE)
Assigned to TROESTER GMBH & CO. KG, Hannover (DE)
Filed by TROESTER GmbH & Co. KG, Hannover (DE)
Filed on Sep. 22, 2021, as Appl. No. 17/481,375.
Claims priority of application No. 10 2020 125 261.7 (DE), filed on Sep. 28, 2020.
Prior Publication US 2022/0097280 A1, Mar. 31, 2022
Int. Cl. B29C 48/325 (2019.01); B29C 48/92 (2019.01); B29C 48/09 (2019.01)
CPC B29C 48/325 (2019.02) [B29C 48/09 (2019.02); B29C 48/92 (2019.02)] 13 Claims
OG exemplary drawing
 
1. An extrusion head, comprising:
a housing;
a mandrel mounted in the housing, wherein an extrusion material can flow around the mandrel in a direction of extrusion of the extrusion head; and
a mouthpiece arranged downstream of the mandrel in the direction of extrusion,
wherein the mandrel includes an end-side mouthpiece section arranged in an opening of the mouthpiece so as to form a circumferential gap between the end-side mouthpiece section and an opening in the mouthpiece, wherein the mandrel is pivotable about at least one axis transverse to the direction of extrusion, and wherein the mandrel is mounted so as to be longitudinally movable in the direction of the at least one axis, so as to change a geometry of the circumferential gap.