EP1688243B1 - Method and rotary press with an apparatus for sorting tablets - Google Patents

Method and rotary press with an apparatus for sorting tablets Download PDF

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Publication number
EP1688243B1
EP1688243B1 EP06000783A EP06000783A EP1688243B1 EP 1688243 B1 EP1688243 B1 EP 1688243B1 EP 06000783 A EP06000783 A EP 06000783A EP 06000783 A EP06000783 A EP 06000783A EP 1688243 B1 EP1688243 B1 EP 1688243B1
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EP
European Patent Office
Prior art keywords
bad
tablets
channel
tablet
air flow
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EP06000783A
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German (de)
French (fr)
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EP1688243A2 (en
EP1688243A3 (en
Inventor
Ingo Schmidt
Andreas Arning
Kai Hübner
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Fette GmbH
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Fette GmbH
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Publication of EP1688243A3 publication Critical patent/EP1688243A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/005—Control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/08—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds carried by a turntable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/32—Discharging presses

Definitions

  • the invention relates to a method for sorting tablets on a rotary press according to claim 1 and a rotary press with a device for sorting tablets according to claim 3.
  • a rotary tablet press of the type mentioned is about GB 705,000 A1 known.
  • US 5,145,693 It has also become known to measure the pressing force exerted on the tablets during production in the machine and to provide a sorting out of bad tablets which do not meet the desired requirements. It is understood that other parameters may be monitored to isolate good from bad tablets.
  • EP-A2-0669171 It has become known to sort waste on a sorting disc by means of a nozzle arrangement into individual containers.
  • the tablets are ejected by means of the lower punch to the top of the die plate, so that a stationary scraper, in shape a wiper blade, which can detect tablets and divert into a Gutkanal. It is understood that bad tablets must be sorted out before reaching a Gutkanals.
  • the prerequisite for a safe sorting out of the bad tablet is that it is in a stable position before the ejection nozzle, because, as mentioned, the blowing process takes place only within a few milliseconds. Due to different material properties of the tablets and also of the tablet forms, blockages of tablets may occur in the area of the tablet scraper and in the Gutkanal, whereby the position of the tablets in front of the ejection nozzle is changed in position. This prevents a safe sorting process. A tablet jam can even lead to damage of components in the tablet press.
  • the invention has for its object to provide a method for sorting bad tablets in a rotary tablet press, with a greater security is achieved.
  • a second air flow is generated in front of a stripping section of the scraper, which directs the tablets in the direction of the scraper and the Gutkanals. This measure ensures that damming of the gut tablets on the scraper is prevented.
  • the tablets are directed in the direction of the stripping surface and can then pass directly into the Gutkanal. Overall, disturbances in the sorting area are avoided. As is known, such tablet presses produce a large amount of tablets per unit time. Even a short-term shutdown of the machine and thus a production interruption brings significant economic disadvantages.
  • a third air flow is generated which accelerates the gut tablets into the gutter channel. Above all, this airflow has the function of preventing a jam in the Gutkanal. A jam in the Gutkanal would quickly propagate into the area of the scraper and thereby lead to a production interruption.
  • a tablet press with a device for sorting tablets according to claim 3 provides at least a first nozzle arrangement, with which an air flow is generated in the poor channel.
  • the invention provides that a second nozzle arrangement is arranged in the conveying direction of the tablets in front of a deflection section of the scraper and generates an air flow directed towards the deflection section or the gutter channel.
  • An embodiment of the invention for this purpose provides a third nozzle arrangement, which is arranged in the conveying direction of the tablets behind the scraper and generates a directed into the Gutkanal air flow.
  • the nozzle arrangements may be suitably designed. It is conceivable to provide a plurality of juxtaposed nozzle openings, which produce a kind of air curtain.
  • means are provided in the conduits routed to the nozzle assemblies for individually adjusting the air pressure to the nozzle orifices.
  • the air pressures can be set differently to achieve the desired sorting behavior.
  • the values for the air pressures can be stored in the operator computer to be interrogated from time to time when a check is made.
  • the air pressure values can be stored in the operating computer as a function of predetermined types of tablets and, if necessary, be transferred to a control computer of the tablet press. The control computer sets a respective pressure value and monitors it.
  • the single figure shows very schematically the plan view of a part of a rotary tablet press with a sorting according to the invention.
  • a die plate 4 of a rotor for a rotary press is seen from above with arranged on a circle die holes 10.
  • die holes are, as is known, with the aid of top and bottom punches (not shown) filled portions of powder to pressed a tablet.
  • the finished compacts are pushed out of the die bores 10 and can be directed into a Gutkanal 6 by means of a scraper 3, which has an approximately circular curved deflection surface 12.
  • a poor channel 7 is arranged in front of this, wherein both channels 6, 7 adjoin one another and are separated by a single wall 14a.
  • an ejection nozzle is indicated, which generates an air blast in the direction of arrow 14 in the direction of bad channel 7.
  • the inlet region of the bad channel 7 is widened, as indicated by the conical part 16.
  • the air blast is generated when a bad tablet has been detected by a monitoring device, not shown, and the control device (not shown) for the ejection nozzle 5 "knows" when the bad tablet has arrived in the region of the ejection nozzle 5.
  • the air blast is generated only for a few milliseconds. It can happen that the strongly accelerated tablet abuts against the oblique wall of the inlet region 16 of the bad channel 7 and thereby rebounds in the direction of deflecting surface 12 of the scraper 3 and even into the Gutkanal 6 passes. This is although the wall 14 extends into the area above the die plate 4.
  • a nozzle arrangement is indicated in the form of a nozzle tube, which is arranged above the die plate 4 and extends over the greater part of the width of the bad channel 7.
  • a series of nozzle openings as indicated by the arrows 18, is provided. With the help of the individual openings, an air flow can be generated which is directed into the poor channel 7.
  • the airflow 18 is generated permanently during operation of the rotary press. If a bad tablet is moved from the ejection nozzle 5 in the direction of the bad channel, the air flow 18 supports the acceleration of the bad tablet, so that it can move without a congestion in the bad channel 7. A rebound of a bad tablet is prevented in this way.
  • a nozzle arrangement 1 is arranged in the form of a nozzle tube, which, like the nozzle tube, has a row of nozzle openings and is able to generate an air flow 20 into the product channel 6.
  • the air flow 20 ensures that good-will tablets as soon as they Nozzle tube have passed, accelerated into the Gutkanal 6 are moved into it, which congestions in Gutkanal be prevented.
  • a further nozzle arrangement 8 in the form of a nozzle tube is arranged in the conveying direction or direction of rotation of the die plate 4 between the ejection nozzle 14 and the stripping or deflecting section of the deflecting surface 12 of the stripper 3, via which the actual deflection takes place in the product channel 6 for the tablets.
  • the nozzle openings are, as indicated by the arrows 22, directed obliquely to the longitudinal extension of the nozzle tube, whereby an air flow in the direction of Gutkanal 6 and deflection section of the scraper 3 is generated.
  • This air flow 22 supports the tablet flow, which is generated by ejection from the die holes 10 and prevents damming of the tablets in the region of the stripper 3.
  • the air pressure for each nozzle pipe is separately adjustable by an air reducer or the like, and the set pressure can be separately read by a suitable display.
  • the machine control can store the respective air pressure conditions for each product to be compacted and, if necessary, call up, adjust and regulate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Sorting Of Articles (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)

Description

Die Erfindung bezieht sich auf ein Verfahren zur Sortierung von Tabletten an einer Rundläufer-Presse nach Patentanspruch 1 und einer Rundläuferpresse mit einer Vorrichtung zur Sortierung von Tabletten nach Patentanspruch 3.The invention relates to a method for sorting tablets on a rotary press according to claim 1 and a rotary press with a device for sorting tablets according to claim 3.

Eine Rundläufer-Tablettenpresse der genannten Art ist etwa aus GB 705,000 A1 bekannt geworden. Aus US 5,145,693 ist auch bekannt geworden, die auf die Tabletten ausgeübte Presskraft während der Produktion in der Maschine zu messen und eine Aussortierung von Schlechttabletten vorzusehen, welche die gewünschten Anforderungen nicht erfüllen. Es versteht sich, dass auch andere Parameter überwacht werden können, um gute von schlechten Tabletten zu trennen.A rotary tablet press of the type mentioned is about GB 705,000 A1 known. Out US 5,145,693 It has also become known to measure the pressing force exerted on the tablets during production in the machine and to provide a sorting out of bad tablets which do not meet the desired requirements. It is understood that other parameters may be monitored to isolate good from bad tablets.

Aus EP 1 247 640 ist auch bekannt geworden, das Aussortieren von Schlechttabletten mit Hilfe einer Auswerfdüse vorzusehen. Eine Steuervorrichtung erhält ein Schlechtsignal von der Überwachungsvorrichtung und öffnet die an eine Druckluftquelle angeschlossene Auswerfdüse kurzzeitig, damit eine Schlechttablette in einen Schlechtkanal abgelenkt werden kann. Ein solcher Druckluftstoß wird nur innerhalb weniger Millisekunden erzeugt, und es ist naturgemäß erforderlich, diesen Luftstoß zu einem Zeitpunkt zu erzeugen, an dem Schlechttablette sich vor dem Eingang des Schlechtkanals befindet. Das Ausstoßen von Schlechttabletten mit Hilfe eines Luftstoßes ist im Übrigen auch aus DE 363 99 18 A1 oder GB-A-1179350 bekannt geworden.Out EP 1 247 640 It has also become known to provide the sorting out of bad tablets by means of an ejection nozzle. A controller receives a bad signal from the monitor and momentarily opens the ejector nozzle connected to a source of compressed air to allow a bad tablet to be deflected into a bad channel. Such a blast of compressed air is generated only within a few milliseconds, and it is naturally necessary to produce this blast of air at a time when bad tablet is in front of the entrance of the bad channel. The ejection of bad tablets by means of an air blast is incidentally also off DE 363 99 18 A1 or GB-A-1179350 known.

Aus EP-A2-0669171 ist bekannt geworden, Abfall auf einer Sortierscheibe mittels einer Düsenanordnung in einzelne Behälter zu sortieren.Out EP-A2-0669171 It has become known to sort waste on a sorting disc by means of a nozzle arrangement into individual containers.

Nach dem Pressvorgang werden die Tabletten mit Hilfe des Unterstempels zur Oberseite der Matrizenplatte hin ausgestoßen, so dass ein stationärer Abstreifer, in Form eines Abstreiferbleches, die Tabletten erfassen und in einen Gutkanal ablenken kann. Es versteht sich, dass Schlechttabletten vor dem Erreichen eines Gutkanals aussortiert werden müssen.After the pressing process, the tablets are ejected by means of the lower punch to the top of the die plate, so that a stationary scraper, in shape a wiper blade, which can detect tablets and divert into a Gutkanal. It is understood that bad tablets must be sorted out before reaching a Gutkanals.

Voraussetzung für eine sichere Aussortierung der Schlechttablette ist, dass sich diese vor der Auswerfdüse in einer stabilen Lage befindet, da, wie erwähnt, der Blasvorgang nur innerhalb weniger Millisekunden stattfindet. Bedingt durch unterschiedliche Materialeigenschaften der Tabletten und auch der Tablettenformen kann es im Bereich des Tablettenabstreifers und im Gutkanal zu Aufstauungen von Tabletten kommen, wodurch die Lage der Tabletten vor der Auswerfdüse in ihrer Position verändert wird. Dadurch wird ein sicherer Aussortiervorgang verhindert. Ein Tablettenstau kann sogar zu Beschädigungen von Bauteilen in der Tablettenpresse führen.The prerequisite for a safe sorting out of the bad tablet is that it is in a stable position before the ejection nozzle, because, as mentioned, the blowing process takes place only within a few milliseconds. Due to different material properties of the tablets and also of the tablet forms, blockages of tablets may occur in the area of the tablet scraper and in the Gutkanal, whereby the position of the tablets in front of the ejection nozzle is changed in position. This prevents a safe sorting process. A tablet jam can even lead to damage of components in the tablet press.

Es kann ferner geschehen, dass in den Schlechtkanal abgeblasene Schlechttabletten gegen die Wandung des Schlechtkanals stoßen und reflektiert werden und dadurch in den Gutkanal gelangen oder zumindest die nachfolgenden Tabletten in ihrer Förderung behindern. Die Bahnen der abgeblasenen und reflektierten Tabletten werden weitestgehend vom Luftdruck, der Tablettenform, dem Tablettengewicht und der Tablettendicke bestimmt. Aus US-A-5322655 ist ein Verfahren bekannt, bei dem mit Hilfe einer in den Schlechtkanal hinein gerichteten Luftströmung die aussortierte Schlechttablette in den Schlechtkanal hinein beschleunigt und eine Rückkehr zur Matrizenplatte hin vermieden wird. Der erwähnte Luftstrom, der während des Betriebs der Tablettenpresse permanent aufrecht erhalten werden kann, beschleunigt die durch den Luftstoß ausgeschiedenen und in den Schlechtkanal beförderten Tabletten zusätzlich und verhindert, dass die Tabletten im Schlechtkanal aufstauen. Darüber hinaus wird verhindert, dass zurückprallende aussortierte Tabletten wieder in den Aussortier- oder Produktionsbereich gelangen.It can also happen that bad flasks blown off into the bad channel strike and be reflected against the wall of the bad channel and thereby enter the gutter channel or at least obstruct the subsequent tablets in their conveyance. The trajectories of the deflated and reflected tablets are largely determined by barometric pressure, tablet shape, tablet weight and tablet thickness. Out US-A-5322655 A method is known in which, with the aid of an air flow directed into the poor channel, the rejected bad tablet is accelerated into the bad channel and a return to the die plate is avoided. The mentioned air flow, which can be permanently maintained during operation of the tablet press, additionally accelerates the tablets excreted by the air blast and conveyed into the bad passage and prevents the tablets from accumulating in the bad passage. In addition, rebounding rejected tablets is prevented from returning to the sorting or production area.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Sortieren von Schlechttabletten in einer Rundläufer-Tablettenpresse anzugeben, mit dem eine größere Sicherheit erzielt wird.The invention has for its object to provide a method for sorting bad tablets in a rotary tablet press, with a greater security is achieved.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.This object is solved by the features of patent claim 1.

Bei der Erfindung wird ein zweiter Luftstrom vor einem Abstreifabschnitt des Abstreifers erzeugt wird, der die Tabletten in Richtung des Abstreifers und des Gutkanals lenkt. Diese Maßnahme bewirkt, dass ein Aufstauen der Guttabletten am Abstreifer verhindert wird. Die Tabletten werden in Richtung Abstreiffläche gelenkt und können von dieser dann unmittelbar in den Gutkanal gelangen. Insgesamt werden Störungen im Sortierbereich vermieden. Bekanntlich werden von derartigen Tablettenpressen pro Zeiteinheit eine große Menge an Tabletten erzeugt. Ein auch nur kurzzeitiger Stillstand der Maschine und damit eine Produktionsunterbrechung bringt erhebliche wirtschaftliche Nachteile mit sich.In the invention, a second air flow is generated in front of a stripping section of the scraper, which directs the tablets in the direction of the scraper and the Gutkanals. This measure ensures that damming of the gut tablets on the scraper is prevented. The tablets are directed in the direction of the stripping surface and can then pass directly into the Gutkanal. Overall, disturbances in the sorting area are avoided. As is known, such tablet presses produce a large amount of tablets per unit time. Even a short-term shutdown of the machine and thus a production interruption brings significant economic disadvantages.

Bei einer der Ausgestaltung der Erfindung wird ein dritter Luftstrom erzeugt, der die Guttabletten in den Gutkanal hinein beschleunigt. Dieser Luftstrom hat vor allen Dingen die Funktion, einen Stau im Gutkanal zu verhindern. Ein Stau im Gutkanal würde sich rasch bis in den Bereich des Abstreifers hinein fortpflanzen und dadurch zu einer Produktionsunterbrechung führen.In one embodiment of the invention, a third air flow is generated which accelerates the gut tablets into the gutter channel. Above all, this airflow has the function of preventing a jam in the Gutkanal. A jam in the Gutkanal would quickly propagate into the area of the scraper and thereby lead to a production interruption.

Eine Tablettenpresse mit einer Vorrichtung zur Sortierung von Tabletten nach Patentanspruch 3 sieht mindestens eine erste Düsenanordnung vor, mit der ein Luftstrom in den Schlechtkanal hinein erzeugt wird. Die Erfindung sieht hierzu vor, dass eine zweite Düsenanordnung in Förderrichtung der Tabletten vor einem Umlenkabschnitt des Abstreifers angeordnet ist und einen zum Umlenkabschnitt bzw. zum Gutkanal hin gerichteten Luftstrom erzeugt.A tablet press with a device for sorting tablets according to claim 3 provides at least a first nozzle arrangement, with which an air flow is generated in the poor channel. For this purpose, the invention provides that a second nozzle arrangement is arranged in the conveying direction of the tablets in front of a deflection section of the scraper and generates an air flow directed towards the deflection section or the gutter channel.

Eine Ausgestaltung der Erfindung hierzu sieht eine dritte Düsenanordnung vor, die in Förderrichtung der Tabletten hinter dem Abstreifer angeordnet ist und einen in den Gutkanal gerichteten Luftstrom erzeugt.An embodiment of the invention for this purpose provides a third nozzle arrangement, which is arranged in the conveying direction of the tablets behind the scraper and generates a directed into the Gutkanal air flow.

Die Düsenanordnungen können in geeigneter Weise ausgeführt sein. Es ist denkbar, mehrere nebeneinander angeordnete Düsenöffnungen vorzusehen, welche eine Art Luftschleier erzeugen. Vorzugsweise sind in den Leitungen, die zu den Düsenanordnungen geführt sind, Mittel vorgesehen, um den Luftdruck zu den Düsenöffnungen hin individuell einzustellen. Je nach Produktionsbedingungen und Art der Tabletten können die Luftdrücke unterschiedlich eingestellt werden, um das gewünschte Sortierverhalten zu erzielen. Die Werte für die Luftdrücke können im Bedienrechner gespeichert werden, um von Zeit zu Zeit abgefragt zu werden, wenn eine Kontrolle vorgenommen wird. Außerdem können die Luftdruckwerte abhängig von vorgegebenen Tablettensorten im Bedienrechner gespeichert und bei Bedarf auf einen Steuerrechner der Tablettenpresse gegeben werden. Der Steuerrechner stellt einen jeweiligen Druckwert ein und überwacht diesen.The nozzle arrangements may be suitably designed. It is conceivable to provide a plurality of juxtaposed nozzle openings, which produce a kind of air curtain. Preferably, means are provided in the conduits routed to the nozzle assemblies for individually adjusting the air pressure to the nozzle orifices. Depending on the production conditions and type of tablets, the air pressures can be set differently to achieve the desired sorting behavior. The values for the air pressures can be stored in the operator computer to be interrogated from time to time when a check is made. In addition, the air pressure values can be stored in the operating computer as a function of predetermined types of tablets and, if necessary, be transferred to a control computer of the tablet press. The control computer sets a respective pressure value and monitors it.

Ein Ausführungsbeispiel der Erfindung soll nachfolgend anhand von Zeichnungen näher erläutert werden.An embodiment of the invention will be explained below with reference to drawings.

Die einzige Figur zeigt äußerst schematisch die Draufsicht auf einen Teil einer Rundläufer-Tablettenpresse mit einer Sortierung nach der Erfindung.The single figure shows very schematically the plan view of a part of a rotary tablet press with a sorting according to the invention.

In der Zeichnung ist eine Matrizenplatte 4 eines Rotors für eine Rundläuferpresse von oben zu erkennen mit auf einem Kreis angeordneten Matrizenbohrungen 10. In den Matrizenbohrungen werden, wie an sich bekannt, mit Hilfe von Ober- und Unterstempeln (nicht gezeigt) eingefüllte Portionen von Pulver zu einer Tablette gepresst. Mit Hilfe der Unterstempel werden die fertigen Presslinge aus den Matrizenbohrungen 10 herausgedrückt und können mit Hilfe eines Abstreifers 3, der eine annähernd kreisförmig gebogene Ablenkfläche 12 aufweist, in einen Gutkanal 6 gelenkt werden. Annähernd parallel zum Gutkanal 6 ist vor diesem ein Schlechtkanal 7 angeordnet, wobei beide Kanäle 6, 7 aneinander angrenzen und durch eine einzige Wand 14a voneinander getrennt sind. Bei 5 ist eine Auswerfdüse angedeutet, die in Richtung Pfeil 14 einen Luftstoß in Richtung Schlechtkanal 7 erzeugt. Der Eintrittsbereich des Schlechtkanals 7 ist verbreitert, wie durch den konischen Teil 16 angedeutet. Der Luftstoß wird erzeugt, wenn eine Schlechttablette von einer nicht gezeigten Überwachungseinrichtung festgestellt wurde und die Steuervorrichtung (nicht gezeigt) für die Auswerfdüse 5 "weiß", wann die Schlechttablette im Bereich der Auswerfdüse 5 angekommen ist. Der Luftstoß wird nur für wenige Millisekunden erzeugt. Dabei kann geschehen, dass die stark beschleunigte Tablette gegen die Schrägwand des Eintrittsbereichs 16 des Schlechtkanals 7 stößt und dabei zurückprallt in Richtung Ablenkfläche 12 des Abstreifers 3 und sogar in den Gutkanal 6 gelangt. Dies, obwohl die Wand 14 in den Bereich oberhalb der Matrizenplatte 4 erstreckt ist.In the drawing, a die plate 4 of a rotor for a rotary press is seen from above with arranged on a circle die holes 10. In the die holes are, as is known, with the aid of top and bottom punches (not shown) filled portions of powder to pressed a tablet. With the help of the lower die, the finished compacts are pushed out of the die bores 10 and can be directed into a Gutkanal 6 by means of a scraper 3, which has an approximately circular curved deflection surface 12. Almost parallel to the Gutkanal 6 a poor channel 7 is arranged in front of this, wherein both channels 6, 7 adjoin one another and are separated by a single wall 14a. At 5, an ejection nozzle is indicated, which generates an air blast in the direction of arrow 14 in the direction of bad channel 7. The inlet region of the bad channel 7 is widened, as indicated by the conical part 16. The air blast is generated when a bad tablet has been detected by a monitoring device, not shown, and the control device (not shown) for the ejection nozzle 5 "knows" when the bad tablet has arrived in the region of the ejection nozzle 5. The air blast is generated only for a few milliseconds. It can happen that the strongly accelerated tablet abuts against the oblique wall of the inlet region 16 of the bad channel 7 and thereby rebounds in the direction of deflecting surface 12 of the scraper 3 and even into the Gutkanal 6 passes. This is although the wall 14 extends into the area above the die plate 4.

Bei 2 ist in Form eines Düsenrohrs eine Düsenanordnung angedeutet, die oberhalb der Matrizenplatte 4 angeordnet ist und sich über den größten Teil der Breite des Schlechtkanals 7 erstreckt. In dem Düsenrohr ist eine Reihe von Düsenöffnungen, wie durch die Pfeile 18 angedeutet, vorgesehen. Mit Hilfe der einzelnen Öffnungen lässt sich eine Luftströmung erzeugen, welche in den Schlechtkanal 7 hinein gerichtet ist. Die Luftströmung 18 wird permanent während des Betriebs der Rundläufer-Presse erzeugt. Wird eine Schlechttablette von der Auswerfdüse 5 in Richtung Schlechtkanal hinein bewegt, unterstützt die Luftströmung 18 die Beschleunigung der Schlechttablette, so dass sie sich ohne eine Staubildung im Schlechtkanal 7 fortbewegen kann. Auch ein Rückprall einer Schlechttablette wird auf diese Weise verhindert.2, a nozzle arrangement is indicated in the form of a nozzle tube, which is arranged above the die plate 4 and extends over the greater part of the width of the bad channel 7. In the nozzle tube, a series of nozzle openings, as indicated by the arrows 18, is provided. With the help of the individual openings, an air flow can be generated which is directed into the poor channel 7. The airflow 18 is generated permanently during operation of the rotary press. If a bad tablet is moved from the ejection nozzle 5 in the direction of the bad channel, the air flow 18 supports the acceleration of the bad tablet, so that it can move without a congestion in the bad channel 7. A rebound of a bad tablet is prevented in this way.

Oberhalb von dem und vor dem Eintritt des Gutkanals 6 ist in Form eines Düsenrohrs eine Düsenanordnung 1 angeordnet, das ebenso wie das Düsenrohr eine Reihe von Düsenöffnungen aufweist und in der Lage ist, eine Luftströmung 20 in den Gutkanal 6 hinein zu erzeugen. Die Luftströmung 20 sorgt dafür, dass Guttabletten, sobald sie das Düsenrohr passiert haben, beschleunigt in den Gutkanal 6 hinein bewegt werden, wodurch Stauungen im Gutkanal verhindert werden.Above and before the entry of the good channel 6, a nozzle arrangement 1 is arranged in the form of a nozzle tube, which, like the nozzle tube, has a row of nozzle openings and is able to generate an air flow 20 into the product channel 6. The air flow 20 ensures that good-will tablets as soon as they Nozzle tube have passed, accelerated into the Gutkanal 6 are moved into it, which congestions in Gutkanal be prevented.

Eine weitere Düsenanordnung 8 in Form eines Düsenrohrs ist in Förderrichtung oder Drehrichtung der Matrizenplatte 4 gesehen zwischen der Auswerfdüse 14 und dem Abstreif- oder Umlenkabschnitt der Umlenkfläche 12 des Abstreifers 3 angeordnet, über welche die eigentliche Umlenkung in den Gutkanal 6 für die Tabletten stattfindet. Die Düsenöffnungen sind, wie durch die Pfeile 22 angedeutet, schräg zur Längserstreckung des Düsenrohrs gerichtet, wodurch eine Luftströmung in Richtung Gutkanal 6 bzw. Umlenkabschnitt des Abstreifers 3 erzeugt wird. Diese Luftströmung 22 unterstützt den Tablettenstrom, der durch Ausstoßen aus den Matrizenbohrungen 10 erzeugt wird und verhindert ein Aufstauen der Tabletten im Bereich des Abstreifers 3.A further nozzle arrangement 8 in the form of a nozzle tube is arranged in the conveying direction or direction of rotation of the die plate 4 between the ejection nozzle 14 and the stripping or deflecting section of the deflecting surface 12 of the stripper 3, via which the actual deflection takes place in the product channel 6 for the tablets. The nozzle openings are, as indicated by the arrows 22, directed obliquely to the longitudinal extension of the nozzle tube, whereby an air flow in the direction of Gutkanal 6 and deflection section of the scraper 3 is generated. This air flow 22 supports the tablet flow, which is generated by ejection from the die holes 10 and prevents damming of the tablets in the region of the stripper 3.

Der Luftdruck für jedes Düsenrohr ist separat durch einen Luftminderer oder dergleichen einstellbar, und der eingestellte Druck kann separat durch eine geeignete Anzeige ablesbar sein. Zusätzlich oder alternativ kann die Maschinensteuerung die jeweiligen Luftdruckbedingungen für jedes zu verpressende Produkt abspeichern und bei Bedarf aufrufen, einstellen und regeln.The air pressure for each nozzle pipe is separately adjustable by an air reducer or the like, and the set pressure can be separately read by a suitable display. In addition or as an alternative, the machine control can store the respective air pressure conditions for each product to be compacted and, if necessary, call up, adjust and regulate.

Claims (7)

  1. A method for sorting tablets on a rotary tablet press, in which the individual tablets are monitored during the pressing process with respect to at least one property of tablet quality, and if a tablet does not satisfy the property, a bad signal is generated; the good tablets are guided from a die plate (4) of the rotary press by means of a deflector (3) into a good channel (6), and after a bad signal is sent, a bad tablet is guided into a bad channel (7) by means of an air pulse, wherein the bad tablet is accelerated into the bad channel (7) using a first air flow (18) directed into the bad channel (7), and return to the die plate (4) is prevented, characterized in that a second air flow (22), which is generated before a deflector section of the deflector, steers the tablets in the direction of the deflector (3) and the good channel (6).
  2. The method according to claim 1, characterized in that a third air flow (20) directed into the good channel (6) accelerates the good tablets in the good channel (6).
  3. A rotary tablet press with an apparatus for sorting tablets in which a deflector (3) is associated with a die plate (4) of the rotor for deflecting tablets ejected out of die holes (10) from the top side of the die plate (4) to a good channel (6) at the periphery of the die plate (4), wherein the rotor rotates in one direction of rotation, and in which a bad channel (7) is disposed before the good channel (6) in the direction of rotation of the rotor to which bad channel an ejector nozzle (5) is assigned that generates an air flow, the air flow direction thereof is directed into the bad channel (7), in which further a monitoring device is disposed at the tablet press for monitoring at least one property of the tablet and generating a bad signal if the desired property of the tablet is not satisfied, and in which the bad signal actuates a control apparatus provided for the ejector nozzle (5), wherein a first nozzle arrangement (2) is disposed after the ejector nozzle (5) in the flow direction of the air flow for generating an air flow directed into the bad channel (7), characterized in that a second nozzle arrangement (8) is disposed before a redirection section (12) of the deflector (3) in the conveyance direction of the tablets, for generating an air flow directed toward the redirection section (12), or respectively the good channel (6).
  4. The apparatus according to claim 3, characterized in that a third nozzle arrangement (1) is disposed after the deflector (3) in the deflection direction of the tablets, for generating an air flow directed into the good channel (6).
  5. The apparatus according to claim 3 or 4, characterized in that the first, second, and/or third nozzle arrangement (2, 8, 1) has a series of nozzle openings disposed next to each other.
  6. The apparatus according to one of the claims 3 to 5, characterized in that the air pressure in the supply lines to the nozzle arrangements (2, 1, 8) can be individually adjusted.
  7. The apparatus according to claim 6, characterized by a separate air pressure display belonging to the nozzle arrangements.
EP06000783A 2005-02-03 2006-01-14 Method and rotary press with an apparatus for sorting tablets Not-in-force EP1688243B1 (en)

Applications Claiming Priority (1)

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DE102005005012A DE102005005012B4 (en) 2005-02-03 2005-02-03 Method and device for sorting tablets on a rotary tablet press

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EP1688243A2 EP1688243A2 (en) 2006-08-09
EP1688243A3 EP1688243A3 (en) 2007-08-01
EP1688243B1 true EP1688243B1 (en) 2012-04-04

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EP (1) EP1688243B1 (en)
DE (1) DE102005005012B4 (en)

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DE102007052552B4 (en) 2007-10-29 2010-01-07 Luxner, Peter, Dipl.-Ing. Method and device for determining control and regulating parameters for tablet presses
DE102010012327B4 (en) * 2010-03-23 2012-02-09 Fette Compacting Gmbh tablet outlet
DE102011101288B4 (en) * 2011-05-10 2013-11-14 Fette Compacting Gmbh Process for operating a plant for the production of tablets and corresponding plant
DE102011050290B4 (en) 2011-05-11 2013-11-07 Ima Kilian Gmbh & Co.Kg Rotary tablet press with tablet drain, tablet expiration therefor, weighing device therefor and method for producing tablets on a tablet press
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JP6775311B2 (en) * 2016-03-29 2020-10-28 株式会社菊水製作所 Molded product manufacturing system
CN106166849A (en) * 2016-08-24 2016-11-30 海宁艾迪欧动物保健品科技有限公司 A kind of Chinese crude drug cake of press device of automatic charging
EP3578350A1 (en) * 2018-06-04 2019-12-11 Korsch AG Outlet sluice for a tabletting machine and a method for sorting pressed articles after manufacture in a tabletting machine
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DE102016101028A1 (en) 2016-01-21 2017-07-27 Fette Compacting Gmbh Rotary tablet press
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EP3199333A1 (en) 2016-01-21 2017-08-02 Fette Compacting GmbH Rotary press for tablets
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Also Published As

Publication number Publication date
EP1688243A2 (en) 2006-08-09
US20060171577A1 (en) 2006-08-03
DE102005005012B4 (en) 2007-07-05
EP1688243A3 (en) 2007-08-01
US7740140B2 (en) 2010-06-22
DE102005005012A1 (en) 2006-08-17

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