US 11,667,068 B2
Device and method for continuously blow molding fiber-reinforced thermoplastic hollow profiles having a constant or changing cross-section
Daniel Barfuss, Dresden (DE); Alexander Rohkamm, Dresden (DE); Philipp Schwanemann, Dresden (DE); and Veit Würfel, Dresden (DE)
Assigned to HERONE GMBH, Dresden (DE)
Appl. No. 17/53,315
Filed by HERONE GMBH, Dresden (DE)
PCT Filed Apr. 25, 2019, PCT No. PCT/EP2019/060556
§ 371(c)(1), (2) Date Apr. 7, 2021,
PCT Pub. No. WO2019/214951, PCT Pub. Date Nov. 14, 2019.
Claims priority of application No. 10 2018 111 283.1 (DE), filed on Mar. 11, 2018.
Prior Publication US 2021/0237330 A1, Aug. 5, 2021
Int. Cl. B29C 49/20 (2006.01); B29C 49/00 (2006.01); B29C 49/04 (2006.01); B29C 49/64 (2006.01); B29K 101/12 (2006.01); B29K 307/04 (2006.01); B29K 309/08 (2006.01)
CPC B29C 49/20 (2013.01) [B29C 49/0005 (2013.01); B29C 49/04 (2013.01); B29C 49/6409 (2013.01); B29K 2101/12 (2013.01); B29K 2307/04 (2013.01); B29K 2309/08 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A device for the semi-continuous blow moulding of fiber-reinforced, thermoplastic, endless, hollow-profile components with cross sections that are constant or varying in a longitudinal direction, comprising at least one consolidating tool which, in a closed state, encloses a preform, which encloses an elastically deformable pressure chamber, wherein:
a) a preforming unit and the at least one consolidating tool are arranged directly one after another;
b) the preforming unit provides the preform;
c) the preform enclosed by the at least one consolidating tool is a preform segment;
d) a central axis of the preforming unit, the at least one consolidating tool, the preform segment, and the pressure chamber are arranged congruently;
e) the at least one consolidating tool is designed in at least two parts; and
f) the at least one consolidating tool corresponds to a contour of the component;
wherein:
the at least one consolidating tool has at least two independently isothermal-tempered tool segments, and in that the tool segments are arranged along a middle axis;
dimensions of the at least one consolidating tool, the pressure chamber, and the preform segment for processing are identical along the central axis;
the device has a feed device which is capable of repeatedly moving the preform by an amount of a length of one of the tool segments into a machining direction directed along the central axis;
the pressure chamber is formed from:
an endless, deformable pressure membrane and sealing elements, or
a pressure membrane that is a deformable hose firmly attached to sealing elements; and
the pressure chamber is pressurizable.