Powder provisioning device for a powder doser

Patent metadata

Field	Value
Publication number	US-11279502-B2
Application number	US-201916534784-A
Country	US
Kind code	B2
Filing date	Aug 7, 2019
Priority date	Aug 8, 2018
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A powder provisioning device is for a powder doser, in particular for a tamping pin station. The powder provisioning device comprises a powder container, which can be driven in rotation, for receiving a powder bed, and a stationarily mounted smoothing device for the powder bed. The stationarily mounted smoothing device includes a stirring unit having at least one stirrer which projects into the interior of the powder container and can be driven in rotation.

First claim

What is claimed is:

1. A method of operating a powder provisioning device for a powder doser, the powder provisioning device having a powder container, which can be driven in rotation, for receiving a powder bed, and the powder provisioning device further having a stationarily mounted smoothing device for the powder bed, the stationarily mounted smoothing device including a stirring unit having at least one stirrer which projects into the interior of the powder container, the method comprising the step of:
driving the at least one stirrer which projects into the interior of the powder unit in rotation.

2. The method of claim 1 , wherein the at least one stirrer has a vertically oriented axis of rotation.

3. The method of claim 1 , wherein the stirring unit has two interengaging stirrers which can be driven in opposite directions.

4. The method of claim 1 , wherein the stirrer has at least one axial mixing element.

5. The method of claim 1 , wherein the stirrer has at least one radial mixing element.

6. The method of claim 1 , wherein the rotating movement of the stirrer is coupled in a synchronized manner to a rotating movement of the powder container.

7. The method of claim 1 , wherein the powder doser is a tamping pin station.

8. A powder provisioning device for a powder doser, the powder provisioning device comprising:
a powder container for receiving a powder bed;
said powder container defining an interior and being configured to be driven in rotation in a first rotating movement;
a stationarily mounted smoothing device for said powder bed;
said stationarily mounted smoothing device including a stirring unit having at least one stirrer which projects into said interior of said powder container;
said at least one stirrer being configured to be driven in rotation in a second rotating movement;
said second rotating movement of said at least one stirrer being coupled in a synchronized manner to said first rotating movement of said powder container.

9. The powder provisioning device of claim 8 , wherein said powder doser is a tamping pin station.

Assignees

• Hoefliger Harro Verpackung

Inventors

• Hoepfer Jonas
• Weigel Marco

Classifications

• B01F35/83

  by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices · CPC title

• B01F29/80 Primary

  rotating about a substantially vertical axis · CPC title

• B01F35/717

  characterised by the means for feeding the components to the mixer · CPC title

• B01F35/88

  by feeding the materials batchwise · CPC title

• B65B1/10

  by rotary feeders · CPC title