US 11,772,316 B2
Extrusion device having internal cooling
Walter Breuning, Bergkirchen Bayern (DE); and Mathias Geyer, München Bayern (DE)
Assigned to KRAUSSMAFFEI EXTRUSION GMBH, Hannover (DE)
Appl. No. 17/269,050
Filed by KRAUSSMAFFEI TECHNOLOGIES GMBH, Munich (DE)
PCT Filed Aug. 27, 2019, PCT No. PCT/EP2019/072751
§ 371(c)(1), (2) Date Feb. 17, 2021,
PCT Pub. No. WO2020/048816, PCT Pub. Date Mar. 12, 2020.
Claims priority of application No. 10 2018 121 387.5 (DE), filed on Sep. 3, 2018.
Prior Publication US 2021/0276237 A1, Sep. 9, 2021
Int. Cl. B29C 48/90 (2019.01); B29C 48/09 (2019.01); B29C 48/325 (2019.01); B29C 48/25 (2019.01); B29L 23/00 (2006.01)
CPC B29C 48/902 (2019.02) [B29C 48/09 (2019.02); B29C 48/2528 (2019.02); B29C 48/2665 (2019.02); B29C 48/325 (2019.02); B29L 2023/22 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An extrusion device (100) with
a material inlet (110) for feeding an extrusion material into the extrusion device (100);
a material outlet (120), which is arranged opposite the material inlet (110) along an axis (x), in order to expel the extrusion material from the extrusion device (100);
a material guidance system (115) for guiding the extrusion material from the material inlet (110) to the material outlet (120);
a body (130), which is arranged on the axis (x) and is movable along the axis (x), which passes through the material outlet (120) and is designed in such a way that, as the body (130) moves along the axis (x), a cross-sectional area through which the extrusion material is expelled from the material outlet (120) changes;
a drive device (140), arranged along the axis (x), for moving the body (130) along the axis (x);
a cooling line system (150) for guiding coolant;
characterized in that
a first part (152) of the cooling line system (150) is arranged in the interior of the body (130) and is suitable for guiding the coolant along the axis (x);
a second part (154) of the cooling line system (150) is suitable for guiding the coolant out of the body (130) away from the axis (x) and for conducting said coolant around the drive device (140);
a third part (156) of the cooling system (150) is suitable for guiding the coolant outwardly into a discharge line (160) for the coolant at an incline to the axis (x); and
the second part (154) of the cooling line system (150) adjoins the first part (152) of the cooling line system (150), and the third part (156) of the cooling line system (150) adjoins the second part (154) of the cooling line system (150) against a flow direction of the extrusion material from the material inlet (110) to the material outlet (120).