EP2251190A2 - Rotary press - Google Patents

Rotary press Download PDF

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Publication number
EP2251190A2
EP2251190A2 EP10004783A EP10004783A EP2251190A2 EP 2251190 A2 EP2251190 A2 EP 2251190A2 EP 10004783 A EP10004783 A EP 10004783A EP 10004783 A EP10004783 A EP 10004783A EP 2251190 A2 EP2251190 A2 EP 2251190A2
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EP
European Patent Office
Prior art keywords
annular surface
rotor
rotary press
filling device
die
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10004783A
Other languages
German (de)
French (fr)
Other versions
EP2251190A3 (en
Inventor
Sven Kolbe
Gernot Pohl
Dirk Peters
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fette GmbH
Original Assignee
Fette GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fette GmbH filed Critical Fette GmbH
Publication of EP2251190A2 publication Critical patent/EP2251190A2/en
Publication of EP2251190A3 publication Critical patent/EP2251190A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a rotary press according to claim 1.
  • Out DE 10 2005 021 926 C5 is a rotary press has become known in which the rotor on the outer side concentric with the pitch circle of the die holes has a lowered annular surface which is bounded by a raised edge on the outside. The annular surface falls off with a shoulder opposite the top side of the die plate, the height of the shoulder being at least the thickness of the tablets produced by the rotary press.
  • a first deflecting means between the first filling device and the second pressing station directs the ejected tablets onto the outer annular surface so that they can be moved to a discharge channel below the then following filling device and printing station.
  • Such a rotary press has the advantage that the compacts can be transferred at arbitrary points regardless of their process device into processes. A special drive for this is not required.
  • peripheral devices are only necessary on one side of the press.
  • the space required for the installation of such a rotary press, for the peripherals and possibly containers is therefore minimal.
  • the invention has for its object to improve a rotary press of the type mentioned in that the compacts run less risk of being damaged. In addition, the risk of stowage should be minimized.
  • the annular surface is arranged radially within the pitch circle and limited to the pitch circle by an annular stationary boundary between the first and second deflection means.
  • the inner annular surface is located on a circle which is arranged within pressing stations and filling devices, the compacts need not undercut these stations, so that the annular surface, if at all can be minimally lowered to a limitation over a small paragraph to reach.
  • the annular surface is at the same height as the die top, so that when deflecting the ejected compacts on the inner annular surface of the compacts are handled extremely gently, so that neither a jam occurs nor there is a risk that the compacts are damaged.
  • the annular surface is formed integrally with the die plate.
  • the compacts are deflected only twice and thus experienced little mechanical stress.
  • the compacts are hardly limited by the low deflection, whereby the risk of stagnation is minimized.
  • a rotor 10 which is rotatably driven about a vertical axis by a drive, not shown.
  • the rotor has a die plate 12 which has die holes 14 on a pitch circle.
  • the rotor 10 is associated with a first filling device 16 on the outer circumference, which inputs powder material into the die bores 14 in a manner known per se.
  • the powder material is compacted by means of upper and lower punches, not shown, in the die bores 14, the pressing force being applied by a first pressing station 18 with upper and lower pressure rollers.
  • Fig. 2 are at 20 a pre-pressure roller and at 22 a main pressure roller indicated by dashed lines.
  • the pellets are then ejected from the lower punches. They are then steered by means of a baffle 24 in a deflection channel 26.
  • a second filling device 28 is associated with the outer periphery of the rotor 10. With this also powder material is filled into the die bore 14 and pressed in the region of the second printing station 28.
  • the second printing station 28 in turn contains form and main printing rollers, wherein dashed lines only one form roller 30 and a main pressure roller 32 is indicated.
  • the direction of rotation of the rotor 10 in the Figures 1 and 2 is opposite to the clockwise direction. It can be seen in the figures that shortly before the first filling device 16 a circular arc-shaped boundary is arranged concentrically to the rotor 10. At the beginning there is a first baffle 32 and at its end a second baffle 34.
  • the tablets ejected from the lower punches are directed onto an inner annular surface 36, past the first filling device 16 and also at the First printing station 18. Subsequently, the tablets reach the second baffle 34, the in Circulation direction is located just behind the circulation plate 24 so that the tablets reach a second outlet channel 38.
  • the annular surface 36 is integrally formed with the rotor 10 and with its die plate 12 and is at the same height as the top of the die plate 12. When deflecting the tablets on the inner annular surface, therefore, the tablets can be moved on a flat surface and suffer none mechanical impairments.
  • the stationary boundary 30, which is suitably attached to the frame of the otherwise not shown frame of the rotary press prevents centrifugal force, the tablets, which are drawn here in black, slip outwards.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Abstract

The press has a first deflecting plate (24) for directing ejected pressed powder material towards an annular surface (36) of a rotor (10). A second deflecting plate (32) directs the pressed articles from the annular surface towards off from the rotor. A third deflecting plate (34) directs the pressed articles ejected from die bores (14) arranged in a partial circle of a die plate (12), towards off from the rotor. The annular surface is arranged radially inside the partial circle and limited towards the partial circle by an annular stationary lock-out (30) between the first and second plates. The first deflecting plate is provided between a compression station (28) and a filling device (16). The third deflecting plate is arranged behind another compression station in the circumferential direction.

Description

Die Erfindung bezieht sich auf eine Rundläuferpresse nach dem Patentanspruch 1.The invention relates to a rotary press according to claim 1.

Aus DE 10 2005 021 926 C5 ist eine Rundläuferpresse bekannt geworden, bei der der Rotor auf der Außenseite konzentrisch zum Teilkreis der Matrizenbohrungen eine abgesenkte Ringfläche aufweist, die durch einen erhabenen Rand an der Außenseite begrenzt ist. Die Ringfläche fällt mit einem Absatz gegenüber der Oberseite der Matrizenscheibe ab, wobei die Höhe des Absatzes mindestens der Dicke der mit der Rundläuferpresse hergestellten Tabletten ist. Ein erstes Ablenkmittel zwischen erster Füllvorrichtung und zweiter Pressstation lenkt die ausgestoßenen Tabletten auf die äußere Ringfläche, so dass sie unterhalb der dann folgenden Füllvorrichtung und Druckstation zu einem Ablaufkanal bewegt werden können. Eine derartige Rundläuferpresse hat den Vorteil, dass die Presslinge an beliebigen Stellen unabhängig von ihrer Prozesseinrichtung in Abläufe überführt werden können. Ein besonderer Antrieb hierfür ist nicht erforderlich. So sind Peripheriegeräte nur an einer Seite der Presse notwendig. Der Raumbedarf für die Aufstellung einer derartigen Rundläuferpresse, für die Peripheriegeräte und möglicherweise Container ist daher minimal. Bei dem Abschieben der Tabletten auf die tieferliegende äußere Ringfläche besteht Gefahr, dass die Presslinge dabei beschädigt werden. Durch das notwendigerweise starke Umlenken kann es zu Staus von Presslingen kommen.Out DE 10 2005 021 926 C5 is a rotary press has become known in which the rotor on the outer side concentric with the pitch circle of the die holes has a lowered annular surface which is bounded by a raised edge on the outside. The annular surface falls off with a shoulder opposite the top side of the die plate, the height of the shoulder being at least the thickness of the tablets produced by the rotary press. A first deflecting means between the first filling device and the second pressing station directs the ejected tablets onto the outer annular surface so that they can be moved to a discharge channel below the then following filling device and printing station. Such a rotary press has the advantage that the compacts can be transferred at arbitrary points regardless of their process device into processes. A special drive for this is not required. So peripheral devices are only necessary on one side of the press. The space required for the installation of such a rotary press, for the peripherals and possibly containers is therefore minimal. When pushing the tablets on the lower outer ring surface there is a risk that the compacts are damaged. Due to the necessarily strong deflection may lead to congestion of compacts.

Der Erfindung liegt die Aufgabe zugrunde, eine Rundläuferpresse der eingangs genannten Art dahingehend zu verbessern, dass die Presslinge weniger Gefahr laufen, beschädigt zu werden. Außerdem soll die Staugefahr minimiert werden.The invention has for its object to improve a rotary press of the type mentioned in that the compacts run less risk of being damaged. In addition, the risk of stowage should be minimized.

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

Bei der erfindungsgemäßen Rundläuferpresse ist die Ringfläche radial innerhalb des Teilkreises angeordnet und zum Teilkreis hin durch eine ringförmige stationäre Begrenzung zwischen erstem und zweitem Ablenkmittel begrenzt.In the rotary press according to the invention, the annular surface is arranged radially within the pitch circle and limited to the pitch circle by an annular stationary boundary between the first and second deflection means.

Dadurch, dass die innere Ringfläche auf einem Kreis liegt, der innerhalb von Pressstationen und Fülleinrichtungen angeordnet ist, brauchen die Presslinge diese Stationen nicht zu unterfahren, so dass die Ringfläche, wenn überhaupt nur minimal abgesenkt werden kann, um über einen kleinen Absatz eine Begrenzung zu erreichen. Nach einer Ausgestaltung der Erfindung ist die Ringfläche in gleicher Höhe wie die Matrizenoberseite, so dass beim Ablenken der ausgestoßenen Presslinge auf die innere Ringfläche die Presslinge äußerst schonend gehandhabt werden, so dass weder ein Stau auftritt noch Gefahr besteht, dass die Presslinge beschädigt werden. Vorzugsweise ist die Ringfläche einteilig mit der Matrizenscheibe ausgebildet.The fact that the inner annular surface is located on a circle which is arranged within pressing stations and filling devices, the compacts need not undercut these stations, so that the annular surface, if at all can be minimally lowered to a limitation over a small paragraph to reach. According to one embodiment of the invention, the annular surface is at the same height as the die top, so that when deflecting the ejected compacts on the inner annular surface of the compacts are handled extremely gently, so that neither a jam occurs nor there is a risk that the compacts are damaged. Preferably, the annular surface is formed integrally with the die plate.

Bei der erfindungsgemäßen Rundläuferpresse werden die Presslinge nur zweimal umgelenkt und erfahren mithin kaum mechanische Belastungen. Die Presslinge werden durch die geringe Ablenkung kaum begrenzt, wodurch das Staurisiko minimiert ist.In the rotary press according to the invention, the compacts are deflected only twice and thus experienced little mechanical stress. The compacts are hardly limited by the low deflection, whereby the risk of stagnation is minimized.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand von Zeichnungen erläutert.

Fig. 1
zeigt perspektivisch eine Doppelrundläuferpresse nach der Erfindung.
Fig. 2
zeigt die Draufsicht auf die Doppelrundläuferpresse nach Fig. 1, wobei zusätzliche Druckstationen angedeutet sind.
An embodiment of the invention will be explained below with reference to drawings.
Fig. 1
shows in perspective a double rotary press according to the invention.
Fig. 2
shows the top view of the double rotary press after Fig. 1 , wherein additional printing stations are indicated.

Die Doppelrundläuferpresse nach den Figuren 1 und 2 ist nur durch diejenigen Bauteile angedeutet, die in Verbindung mit der Erfindung von Interesse sind. Alle übrigen Teile einer solchen Rundläuferpresse, die im Übrigen bekannt sind, sind fortgelassen.The double rotary press after the Figures 1 and 2 is indicated only by those components which are of interest in connection with the invention. All other parts of such a rotary press, which are otherwise known are omitted.

Man erkennt in den Figuren 1 und 2 einen Rotor 10, der um eine Hochachse von einem nicht gezeigten Antrieb drehend antreibbar ist. Der Rotor weist eine Matrizenscheibe 12 auf, welche auf einem Teilkreis Matrizenbohrungen 14 aufweist. Dem Rotor 10 ist am äußeren Umfang eine erste Füllvorrichtung 16 zugeordnet, die in an sich bekannter Weise Pulvermaterial in die Matrizenbohrungen 14 eingibt. Das Pulvermaterial wird mit Hilfe von nicht gezeigten Ober- und Unterstempeln in den Matrizenbohrungen 14 verdichtet, wobei die Presskraft von einer ersten Pressstation 18 aufgebracht wird mit oberen und unteren Druckrollen. In Fig. 2 sind bei 20 eine Vordruckdruckrolle und bei 22 eine Hauptdruckdruckrolle gestrichelt angedeutet. Die Presslinge werden anschließend von den Unterstempeln ausgestoßen. Sie werden dann mit Hilfe eines Ablenkblechs 24 in einen Ablenkkanal 26 gelenkt.One recognizes in the Figures 1 and 2 a rotor 10 which is rotatably driven about a vertical axis by a drive, not shown. The rotor has a die plate 12 which has die holes 14 on a pitch circle. The rotor 10 is associated with a first filling device 16 on the outer circumference, which inputs powder material into the die bores 14 in a manner known per se. The powder material is compacted by means of upper and lower punches, not shown, in the die bores 14, the pressing force being applied by a first pressing station 18 with upper and lower pressure rollers. In Fig. 2 are at 20 a pre-pressure roller and at 22 a main pressure roller indicated by dashed lines. The pellets are then ejected from the lower punches. They are then steered by means of a baffle 24 in a deflection channel 26.

Diametral gegenüber der ersten Füllvorrichtung ist eine zweite Füllvorrichtung 28 dem äußeren Umfang des Rotors 10 zugeordnet. Mit dieser wird ebenfalls Pulvermaterial in die Matrizenbohrung 14 eingefüllt und im Bereich der zweiten Druckstation 28 gepresst. Die zweite Druckstation 28 enthält wiederum Vordruck- und Hauptdruckrollen, wobei gestrichelt gezeichnet nur eine Vordruckrolle 30 und eine Hauptdruckrolle 32 angedeutet ist. Die Drehrichtung des Rotors 10 in den Figuren 1 und 2 ist entgegengesetzt der Uhrzeigerrichtung. Man erkennt in den Figuren, dass kurz vor der ersten Füllvorrichtung 16 eine kreisbogenförmige Begrenzung konzentrisch zum Rotor 10 angeordnet ist. An ihrem Anfang befindet sich ein erstes Umlenkblech 32 und an ihrem Ende ein zweites Umlenkblech 34. Mit Hilfe des ersten Umlenkbleches 32 werden die von den Unterstempeln ausgestoßenen Tabletten auf eine innere Ringfläche 36 gelenkt, und zwar an der ersten Füllvorrichtung 16 vorbei und auch an der ersten Druckstation 18. Anschließend gelangen die Tabletten zum zweiten Umlenkblech 34, das in Umlaufrichtung kurz hinter dem Umlaufblech 24 angeordnet ist, damit die Tabletten in einen zweiten Ablaufkanal 38 gelangen.Diametrically opposite the first filling device, a second filling device 28 is associated with the outer periphery of the rotor 10. With this also powder material is filled into the die bore 14 and pressed in the region of the second printing station 28. The second printing station 28 in turn contains form and main printing rollers, wherein dashed lines only one form roller 30 and a main pressure roller 32 is indicated. The direction of rotation of the rotor 10 in the Figures 1 and 2 is opposite to the clockwise direction. It can be seen in the figures that shortly before the first filling device 16 a circular arc-shaped boundary is arranged concentrically to the rotor 10. At the beginning there is a first baffle 32 and at its end a second baffle 34. With the aid of the first baffle 32, the tablets ejected from the lower punches are directed onto an inner annular surface 36, past the first filling device 16 and also at the First printing station 18. Subsequently, the tablets reach the second baffle 34, the in Circulation direction is located just behind the circulation plate 24 so that the tablets reach a second outlet channel 38.

Die Ringfläche 36 ist einteilig mit dem Rotor 10 geformt bzw. mit dessen Matrizenscheibe 12 und liegt auf gleicher Höhe wie die Oberseite der Matrizenscheibe 12. Beim Ablenken der Tabletten auf die innere Ringfläche können daher die Tabletten auf einer ebenen Fläche verschoben werden und erleiden dadurch keine mechanischen Beeinträchtigungen. Die stationäre Begrenzung 30, die in geeigneter Weise am Rahmen des im Übrigen nicht gezeigten Gestells der Rundläuferpresse angebracht ist, verhindert, dass durch Zentrifugalkraft die Tabletten, die hier schwarz eingezeichnet sind, nach außen rutschen.The annular surface 36 is integrally formed with the rotor 10 and with its die plate 12 and is at the same height as the top of the die plate 12. When deflecting the tablets on the inner annular surface, therefore, the tablets can be moved on a flat surface and suffer none mechanical impairments. The stationary boundary 30, which is suitably attached to the frame of the otherwise not shown frame of the rotary press prevents centrifugal force, the tablets, which are drawn here in black, slip outwards.

Claims (3)

Rundläuferpresse, mit einem um eine vertikale Achse drehend antreibbarem Rotor, der eine Matrizenscheibe mit Matrizenbohrungen auf einem Teilkreis und in Führungen geführte Ober- und Unterstempel aufweist, Steuerkurven für die Ober- und Unterstempel, mindestens zwei in Umfangsrichtung beabstandeten Pressstationen mit oberer und unterer Druckrolle, einer ersten Füllvorrichtung in Umfangsrichtung einer ersten Pressstation und einer zweiten Füllvorrichtung in Umfangrichtung hinter der ersten Pressstation, wobei der Rotor radial beabstandet zum Teilkreis für die Matrizenbohrungen eine Ringfläche aufweist, die konzentrisch zur Drehachse des Rotors ist, wobei erste Ablenkmittel zwischen zweiter Pressstation und erster Füllvorrichtung vorgesehen sind, die die ausgestoßenen Presslinge zur Ringfläche lenken, zweite Ablenkmittel vorgesehen sind, die die Presslinge von der Ringfläche nach außerhalb des Rotors lenken und dritte Ablenkmittel in Umfangsrichtung hinter der ersten Pressstation, welche die aus den Matrizenbohrungen ausgestoßenen Presslinge nach außerhalb des Rotors lenken, dadurch gekennzeichnet, dass die Ringfläche (36) radial innerhalb des Teilkreises angeordnet und zum Teilkreis hin durch eine ringförmige stationäre Begrenzung 30 zwischen erstem und zweiten Ablenkmittel (32, 34) begrenzt ist.Rotary press, with a rotatable about a vertical axis rotor having a die plate with Matrizenbohrungen on a pitch circle and guided in guides upper and lower punches, control curves for the upper and lower punches, at least two circumferentially spaced pressing stations with upper and lower pressure roller, a first filling device in the circumferential direction of a first pressing station and a second filling device in the circumferential direction behind the first pressing station, wherein the rotor radially spaced from the pitch circle for the die holes has an annular surface which is concentric with the axis of rotation of the rotor, wherein first deflection means between the second pressing station and the first filling device are provided, which direct the ejected compacts to the annular surface, second deflection means are provided which direct the compacts of the annular surface to the outside of the rotor and third deflection means in the circumferential direction behind the first Pressst Ation, which direct the ejected from the Matrizenbohrungen pellets to the outside of the rotor, characterized in that the annular surface (36) disposed radially within the pitch circle and limited to the partial circle by an annular stationary boundary 30 between the first and second deflection means (32, 34) is. Rundläuferpresse nach Anspruch 1, dadurch gekennzeichnet, dass die Ringfläche (36) in der gleichen Ebene wie die Oberseite der Matrizenscheibe (12) liegt.Rotary press according to claim 1, characterized in that the annular surface (36) in the same plane as the top of the die plate (12). Rundläuferpresse nach Anspruch 1, dadurch gekennzeichnet, dass die Ringfläche (36) einteilig mit der Matrizenscheibe (32) ausgebildet ist.Rotary press according to claim 1, characterized in that the annular surface (36) is formed integrally with the die plate (32).
EP10004783.6A 2009-05-11 2010-05-06 Rotary press Withdrawn EP2251190A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009021276A DE102009021276B4 (en) 2009-05-11 2009-05-11 Rotary press

Publications (2)

Publication Number Publication Date
EP2251190A2 true EP2251190A2 (en) 2010-11-17
EP2251190A3 EP2251190A3 (en) 2013-05-01

Family

ID=42338087

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10004783.6A Withdrawn EP2251190A3 (en) 2009-05-11 2010-05-06 Rotary press

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US (1) US8096801B2 (en)
EP (1) EP2251190A3 (en)
DE (1) DE102009021276B4 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3009261A4 (en) * 2013-06-12 2017-02-22 Otsuka Pharmaceutical Co., Ltd. Manufacturing method and tablet press for nucleated tablet

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103372994A (en) * 2012-04-25 2013-10-30 北京翰林航宇科技发展有限公司 Tablet machine with three sets of pressing wheel structures
DE102014117012B4 (en) 2014-11-20 2017-07-13 Fette Compacting Gmbh Method for conveying compacts in a rotary press and rotary press for producing compacts

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6020397U (en) * 1983-07-20 1985-02-12 株式会社　菊水製作所 Rotary powder compression molding machine
JPS6020398U (en) * 1983-07-20 1985-02-12 株式会社　菊水製作所 Rotary powder compression molding machine
DE102005021926C5 (en) 2005-05-12 2008-11-20 Fette Gmbh Rotary press

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1053639A (en) *
DE1427423A1 (en) * 1962-03-22 1968-11-21 Wilhelm Fette Praez Swerkzeug Method and device for the production of single- or multilayer tablets
DE6928976U (en) * 1968-07-25 1969-11-13 Manesty Machines ROTATING TABLETING MACHINE
JPS5348851Y2 (en) * 1976-03-31 1978-11-22
CA2176412C (en) * 1995-05-18 2008-10-07 David Henry Wilson Rotary tabletting press

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6020397U (en) * 1983-07-20 1985-02-12 株式会社　菊水製作所 Rotary powder compression molding machine
JPS6020398U (en) * 1983-07-20 1985-02-12 株式会社　菊水製作所 Rotary powder compression molding machine
DE102005021926C5 (en) 2005-05-12 2008-11-20 Fette Gmbh Rotary press

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3009261A4 (en) * 2013-06-12 2017-02-22 Otsuka Pharmaceutical Co., Ltd. Manufacturing method and tablet press for nucleated tablet
US9707729B2 (en) 2013-06-12 2017-07-18 Otsuka Pharmaceutical Co., Ltd. Method and apparatus for manufacturing nucleated tablets

Also Published As

Publication number Publication date
EP2251190A3 (en) 2013-05-01
DE102009021276B4 (en) 2012-08-02
US20100285166A1 (en) 2010-11-11
US8096801B2 (en) 2012-01-17
DE102009021276A1 (en) 2010-11-25

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