Weighing device for a packaging machine

US8266874B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Werner Runft · Winnenden, DE
• Thomas Franck · Lorch, DE
• Torsten Grass · Neukirchen, DE

Key dates

• Filing date: Oct 30, 2006
• Grant date: Sep 18, 2012
• Expiry date: May 9, 2029

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61J3/074
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a weighing device for a packaging machine. Empty capsules that are still closed are removed from a capsule holder, weighed on a gravimetric scale, placed back into an empty capsule holder, and then taken apart. The device makes it possible to remove empty capsules and replace them at full machine speed, without a loss of any consequence in output. It is possible to use a gravimetric measurement method to carry out a tare weighing of the capsules. An additional weighing device for filled capsules is integrated into a capsule transport device to determine the net weight based on the tare weight and the weight of the full capsules. Such a combination of a gravimetric tare weighing and a gross weighing to statistically determine the net weight is particularly well-suited to an intermediate capsule filling device.