Patent · US Active

Extruder for a 3D printer with a variable material throughput

US10894359B2 · kind B2 · utility

0Cited by

3References

18Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Antonius Gress · Ornbau, DE
Hendrik Jahnle · Leutenbach, DE
Jan Tremel · Erlangen, DE
Markus Feigl · Markgröningen, DE

Key dates

Filing date	Jun 21, 2017
Grant date	Jan 19, 2021
Priority date	—
Expiry date	Aug 14, 2037

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB33Y30/00
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Extruder (1) for a 3D printer, comprising at least one outer nozzle (2) and a conveying worm (3) for feeding liquid and/or plasticized starting material (4) into the interior chamber (21) of the outer nozzle (2), wherein an inner nozzle (5) is arranged in the interior chamber (21) of the outer nozzle (2), wherein the interior chamber (51) of the inner nozzle (5) is connected to the interior chamber (21) of the outer nozzle (2) via at least one duct (52, 52a, 52b) which is continuous for the starting material (4), and wherein the inner nozzle (5) is mounted such that it can be moved linearly along the longitudinal axis (2a) of the outer nozzle (2). A 3D printer (100) having the extruder (1) and means (8) for generating a relative movement between the extruder (1) and a construction surface (101), on which the object (102) to be manufactured is produced.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.