Patent · US Active

Print head for 3D printing of metals, device for additively manufacturing three-dimensional workpieces, comprising a print head and method for operating a device

US12257630B2 · kind B2 · utility

0Cited by

5References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Viktor Friedrich · Sersheim, DE
Benjamin Schweizer · Horb, DE
Eberhard Maier · Weiler-Langweiler, DE

Key dates

Filing date	Dec 6, 2019
Grant date	Mar 25, 2025
Priority date	—
Expiry date	Jul 18, 2042

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/25
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a print head (1) for additively manufacturing three-dimensional workpieces, comprising a housing (3), a device (28) for feeding a metal (14), a piston (5), a reservoir (7) with an outlet opening (10) and an actuator device (12) for displacing the piston (5), wherein the reservoir (7, 27) has a melt region (20) and a displacement body chamber (21) for a liquid phase (8) of the metal (14), wherein the melt region (20) adjoins the inert atmosphere (22) and is connected to the displacement body chamber (21) such that, as a result of the displacement of the piston (5), the liquid phase (8) of the metal (14) can be stimulated to pass through the outlet opening (10), said outlet opening (10) being mounted on an insert (11) of the print head (1). The invention is characterised in that the print head (1) comprises a device (50) for feeding a protective gas (60) to the outlet opening (10) of the print head (1). The invention also relates to a device (100) for additively manufacturing three-dimensional workpieces and to a method for operating a print head (1).

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