Method for testing pressing tablets

US7032460B2 · kind B2 · utility

Assignee

• FETTE GMBH · DE

Inventors

• Juergen Hinzpeter · Schwarzenbek, DE
• Ingo Schmidt · Schwarzenbek, DE
• Ulrich Gathmann · Hamburg, DE
• Joerg Gaedecke · Geesthacht, DE

Key dates

• Filing date: Apr 27, 2004
• Grant date: Apr 25, 2006
• Expiry date: Jun 23, 2024

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B30B11/005
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method for test pressing tablets by means of a rotary tabletting machine, a rotationally driven rotor which has a series of upper and lower rams, a die-plate with dies with which the rams interact, a control cam system for said rams, and a filling assembly to continuously fill said dies with said rotor rotating, further by means of at least one pressure station at which the material located in said dies is compressed into a tablet, and a measuring device having a plurality of measuring positions which measures at least the compression force applied by said rams and the number of revolutions of said rotor, comprising the process steps of, a pair of rams selected for a single compression procedure is automatically moved to a filling position, a die or limited number of dies is filled with material with said filling assembly removed at least in part and said rotor at stoppage, said rotor is set into rotation subsequently and is sped up such as to have the desired production speed in said pressure station, and said rotor is stopped in said filling position after a revolution and signals or signal sequences of the measuring positions are recorded while the rotor is rotating and are pr…