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US 10,518,443 B2Granted
Rotary tablet press
AssigneeFette Compacting GmbH
InventorsAndreas Arning, Nils Petersen
Life of this patent
Estimating the term…
Abstract
A rotary tablet press having a rotatably driven rotor and a die plate with a plurality of die bores. A plurality of upper and lower punches are configured to produce tablets in the plurality of die bores. The tablets are monitored for one or more characteristics and are sorted by an ejection apparatus according to the one or more characteristics into a reject channel and a satisfactory channel.
Claims17
A rotary tablet press comprising:
- a rotatably driven rotor having a die plate including a plurality of die bores and an upper face;
- a plurality of upper and lower punches that rotate with the die plate, the plurality of lower punches configured to eject tablets from the plurality of die bores;
- a deflector configured to deflect tablets from the upper face of the die plate into a satisfactory channel;
- an ejection apparatus configured to eject tablets into a reject channel that is positioned upstream of the satisfactory channel;
- a monitoring apparatus configured to monitor at least one property of the tablets, wherein the monitoring apparatus is configured to produce a reject signal when the at least one property of the tablets deviates inadmissibly from a reference value;
- a control apparatus configured to actuate the ejection apparatus in response to the reject signal;
- a first vacuum apparatus positioned in the reject channel and configured to produce a vacuum, the vacuum configured to discharge tablets ejected by the ejection apparatus through the reject channel;
- a second vacuum apparatus positioned in the satisfactory channel and configured to produce a vacuum, the vacuum configured to suction tablets from the die plate which are deflected by the deflector in a direction of the satisfactory channel and discharge the suctioned tablets through the satisfactory channel;
- and
- at least one detector device positioned in at least one of the reject channel and the satisfactory channel and configured to detect tablets passing through the at least one of the reject channel and the satisfactory channel,
- wherein the at least one detector device is positioned in at least one of the first vacuum apparatus and the second vacuum apparatus.
8 more elements
A multiple rotary tablet press comprising:
- a die plate;
- a plurality of satisfactory channels and a plurality of reject channels;
- a deflector assigned to each of the plurality of satisfactory channels;
- the deflector configured to deflect satisfactory tablets into a respective satisfactory channel;
- an ejection apparatus assigned to each of the plurality of reject channels and configured to eject reject tablets into one of the plurality reject channels;
- a monitoring device configured to monitor one or more characteristics of a tablet, the monitoring device configured to produce an reject signal in response to a value of the one or more characteristics being below a predetermined value;
- a control apparatus configured to actuate a respective ejection apparatus and eject the reject tablets in response to the reject signal produced by the monitoring device;
- a first vacuum apparatus positioned in each of the plurality of reject channels and configured to produce a vacuum, the vacuum configured to discharge the tablets ejected by the respective ejection apparatus through a respective reject channel;
- and
- a second vacuum apparatus positioned in each of the plurality of satisfactory channels and configured to produce a vacuum, the vacuum configured to suction tablets that are deflected by the respective deflector from the die plate and discharge them through a respective satisfactory channel.
7 more elements
A rotary tablet press comprising:
- a rotatably driven rotor having a die plate including a plurality of die bores and an upper face;
- a plurality of upper and lower punches that rotate with the die plate, the plurality of lower punches configured to eject tablets from the plurality of die bores;
- a deflector configured to deflect tablets from the upper face of the die plate into a satisfactory channel;
- an ejection apparatus configured to eject tablets into a reject channel that is positioned upstream of the satisfactory channel;
- a monitoring apparatus configured to monitor at least one property of the tablets, wherein the monitoring apparatus is configured to produce a reject signal when the at least one property of the tablets deviates inadmissibly from a reference value;
- a control apparatus configured to actuate the ejection apparatus in response to the reject signal;
- a first vacuum apparatus positioned in the reject channel and configured to produce a vacuum, the vacuum configured to discharge tablets ejected by the ejection apparatus through the reject channel;
- a second vacuum apparatus positioned in the satisfactory channel and configured to produce a vacuum, the vacuum configured to suction tablets from the die plate which are deflected by the deflector in a direction of the satisfactory channel and discharge the suctioned tablets through the satisfactory channel;
- and
- at least one detector device positioned in the first vacuum apparatus and configured to detect tablets passing through the reject channel, wherein the first vacuum apparatus is configured to suction away tablet dust deposited on the at least one detector device.
7 more elements
Dependencies are inferred from the claim text.