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EP2065175B1 - Rotary tablet compactor - Google Patents

Rotary tablet compactor Download PDF

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Publication number
EP2065175B1
EP2065175B1 EP08018777.6A EP08018777A EP2065175B1 EP 2065175 B1 EP2065175 B1 EP 2065175B1 EP 08018777 A EP08018777 A EP 08018777A EP 2065175 B1 EP2065175 B1 EP 2065175B1
Authority
EP
European Patent Office
Prior art keywords
control cam
radially
cam
cam part
rotary tablet
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.)
Not-in-force
Application number
EP08018777.6A
Other languages
German (de)
French (fr)
Other versions
EP2065175A2 (en
EP2065175A3 (en
Inventor
Peter Lüneburg
Matthias Dederichs
Ulrich Arndt
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 EP2065175A2 publication Critical patent/EP2065175A2/en
Publication of EP2065175A3 publication Critical patent/EP2065175A3/en
Application granted granted Critical
Publication of EP2065175B1 publication Critical patent/EP2065175B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B11/00Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02Presses 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
    • B30B11/08Presses 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0023Drive arrangements for movable carriers, e.g. turntables
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/005Cammed

Definitions

  • the invention relates to a rotary press according to the preamble of patent claim 1.
  • a rotor In a rotary press, a rotor is rotatably mounted and driven in a frame about a vertical axis.
  • the usually one-piece rotor body includes an upper and a lower punch holder for upper and lower punch, which are guided axially parallel in holes.
  • the press dies cooperate with bores of a die plate, which is either formed integrally with the rotor body or represents a separate part.
  • a die plate which is either formed integrally with the rotor body or represents a separate part.
  • cams are mounted on curve holders in the frame, which cooperate with the top and / or bottom of the head of the ram. Only in the area of pressing stations with upper and lower pressure rollers are the press punches not guided by control cams.
  • the invention has for its object to provide a rotary press, can be removed in the control cams without removing the ram before.
  • the control cam parts are releasably attached to the cam carrier and can - if solved - are moved radially away from the punch heads, to the extent that they can be taken parallel to the rotor axis past the stamp heads up or down. It is understood that the control cam parts can only be moved radially away from the side of the press dies, against which they rest against the press die heads.
  • the cam sections are each assigned to a separate control curve part. Both cam parts are releasably attached to the cam carrier. Both cam parts have a cam portion which engage on opposite sides of the heads of the ram.
  • the arrangement of the control cam parts relative to the cam carrier is such that the control cam parts after release from the cam carrier can first be moved radially apart and then moved parallel to the axis of the rotor.
  • the cam member in the invention is divided into two parts and the items can be removed separately, without the need for the press stamps must be removed beforehand.
  • the press punches can therefore remain in the press.
  • the change of the cam elements can go quickly in the invention, whereby less downtime during retrofitting are necessary.
  • the invention in the use of rotary presses, in which it is intended, also for cleaning rotor and ram to leave in the press.
  • This is possible by surrounding the rotor with a sealing housing which forms a relatively small pressing space within the press housing.
  • the housing is designed so that the protruding from the rotor upper and lower ends of the ram, which cooperate with the cams, outside the baling chamber lie.
  • the press punches are themselves sealingly guided in the bores of the stamp holders.
  • control cam parts have radial flange sections, wherein the flange section of the radially outer control cam section covers the flange section of the radially inner control cam section.
  • flange portions are tensioned against each other when they are fastened by means of screws on the cam carrier.
  • cam parts there are different ways of mounting the cam parts on the cam carrier conceivable.
  • One according to an embodiment of the invention is that the radially inner cam part is attached to the cam carrier and the radially outer cam part is fixed to the radially inner cam part.
  • the inner cam part has a radially outwardly pointing flange portion which covers the outer cam part.
  • a frame 10 of a rotary press after Fig. 2 has a lower platform 12 and an upper platform 14.
  • the lower platform 12 supports a drive shaft, which is driven via a gear 18 by an electric motor 20.
  • On the shaft 16 is seated a rotor 22, which has an upper punch holder 24 and a lower punch holder 26 for upper punch 28 and lower punch 30.
  • the pressing rams 28, 30 cooperate with bores of a die plate 32, which in the case shown formed integrally with the rotor 22 is.
  • FIG. 2 An upper cam carrier 34 holds a cam member 36.
  • a lower cam carrier 38 holds a lower cam member 40.
  • An upper pressure roller 42 and a lower pressure roller 44 In the area of the pressure rollers press punches 28th , 30 pressed into the die holes for the purpose of compressing the powdery material in the holes, previously entered by a filling device, not shown in the holes has been.
  • the revolving press shown Fig. 2 corresponds to the state of the art.
  • a development of the rotor is shown. Identical parts are provided with the same reference numerals.
  • a filling device is shown which fills die bores 48 of the die plate 32 with powdered material. It can be seen that outside the pressure rollers 42, 44 or 42a, 44a, the heads of the pressing rams 28, 30 are guided by means of upper control cam elements 50 and lower control cam elements 52. In area 54, filling takes place. In area 56, a metering of the pressing material takes place, the position of the lower punches 30 predetermining the filling volume. By the pressure rollers 42, 44 is a pre-pressing. By the pressure rollers 42a, 44a, the main pressing occurs. In area 58, the compacts are ejected from the lower punches 30.
  • FIGS. 3 and 4 is perspectively the rotor 22 according to Fig. 2 indicated.
  • Fig. 3 Holes 62 which lead upper punch 28.
  • a cam member 64 is shown, which is composed of a radially outer cam member 66 and a radially inner cam member 68.
  • Each cam part 66, 68 has a cam portion 70 and 72, respectively.
  • the control cam sections 70, 72 form a control cam in the area shown on the circumference of the rotor 22.
  • Cam portions 70, 72 engage under the punch head 60, wherein a further cam portion 74 cooperates with the top of the punch head 60.
  • the outer control part 66 has a radially inwardly pointing flange 76.
  • Inner control part 68 has a radially inwardly pointing flange 78. The latter lies on a flat surface of a cam carrier 80, and the flange 76 rests on an associated higher surface of the cam carrier 80.
  • the two flanges 76, 78 are made by means of screws, as at 82 in FIGS. 3 and 4 can be seen attached to the cam carrier 80.
  • the outer cam part 66 can be moved radially outward until abutting a boundary 90 of the rotor 22.
  • the punch head 60 moves into the free space 84 and abuts against the facing side of the recess of the Control parts 66 on.
  • the control part 66 can now be moved up and released from the punch head 60.
  • Fig. 11 is shown how subsequently the cam member 68 can be moved radially inward and eliminates the free space 86. In this case, the cam member 68 abuts against the cam carrier 80. How out Fig. 12 then to see, also the inner control part 68 can be removed upwards.
  • control cam element 64 can be completely removed without the press ram 28 having to be removed. Nevertheless, it is of course possible to remove the press dies if, for example, another specification is to be used.
  • FIGS. 3 and 4 or 8 to 12 illustrated cam member 64 is in Fig. 5 shown pulled apart.
  • the FIGS. 6 and 7 show other constructive embodiments.
  • the embodiment according to Fig. 6 has an inner control part 68a and an outer control part 66a.
  • the cam sections 70, 72 are similar to those Fig. 5 , While in Fig. 5 Both control parts 66, 68 are secured via flanges 76, 78 on the cam carrier 80, in the embodiment according to Fig. 6 the outer control part 66a is fixed to the inner control part 68a.
  • a radially outwardly facing flange 92 of the inner control part 68a covers the top of the outer control part 66a.
  • the outer control part 66b largely follows the control part 66a Fig. 6 , It also recognizes a bore 94 for the screw with the inner control part 68b, which also has holes 96. In the case shown, the upper sides of the control parts 68b, 66b are aligned.
  • the inner control part 68b is in turn by means of the flange 78 to not shown in these figures cam carrier 80 according to the FIGS. 8 to 12 attached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Press Drives And Press Lines (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

Die Erfindung bezieht sich auf eine Rundlaufpresse nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a rotary press according to the preamble of patent claim 1.

Bei einer Rundlaufpresse ist ein Rotor in einem Gestell um eine Hochachse drehbar gelagert und angetrieben. Der zumeist einteilige Rotorkörper enthält eine obere und eine untere Stempelaufnahme für Ober- und Unterstempel, welche in Bohrungen achsparallel geführt sind. Die Pressstempel wirken mit Bohrungen einer Matrizenscheibe zusammen, die entweder einteilig mit dem Rotorkörper geformt ist oder ein getrenntes Teil darstellt. Aus DE 10 2004 040 163 ist auch bekannt geworden, die Matrizenscheibe aus einzelnen Segmenten zusammenzusetzen.In a rotary press, a rotor is rotatably mounted and driven in a frame about a vertical axis. The usually one-piece rotor body includes an upper and a lower punch holder for upper and lower punch, which are guided axially parallel in holes. The press dies cooperate with bores of a die plate, which is either formed integrally with the rotor body or represents a separate part. Out DE 10 2004 040 163 It has also become known to assemble the die plate from individual segments.

Während der Umdrehung des Rotors werden die Pressstempel axial bewegt. Ein Großteil der Bewegungen wird von Steuerkurven bewerkstelligt. Zu diesem Zweck sind an Kurvenhaltern im Gestell Steuerkurvenelemente angebracht, welche mit der Oberseite und/oder der Unterseite des Kopfs der Pressstempel zusammenwirken. Lediglich im Bereich von Pressstationen mit oberer und unterer Druckrolle sind die Pressstempel nicht von Steuerkurven geführt.During the rotation of the rotor, the ram are moved axially. Much of the movement is done by cams. For this purpose, cam members are mounted on curve holders in the frame, which cooperate with the top and / or bottom of the head of the ram. Only in the area of pressing stations with upper and lower pressure rollers are the press punches not guided by control cams.

Aus Gründen des Verschleißes oder einer Änderung der Spezifikation ist erforderlich, die Führungskurvenelemente auszubauen und durch andere zu ersetzen. Hierfür ist im Stand der Technik erforderlich, Maschinenverkleidungsteile und die Fülleinrichtung aus dem Pressengestell zu entfernen und mehrere Stempel oder die Matrizenscheibe mit den Pressstempeln auszubauen. Außerdem ist in der Maschine befindliches Pulver abzusaugen. Der Montageaufwand ist daher erheblich. Außerdem ist während der Montagezeit der Betrieb der Rundlaufpresse naturgemäß unterbrochen. Der Austausch von Steuerkurvenelementen führt daher zu einer erheblichen Unterbrechung der Produktionszeit.For reasons of wear or a change in specification, it is necessary to remove the guide cam elements and replace them with others. For this purpose, the prior art requires machine trim parts and to remove the filling device from the press frame and to remove a plurality of punches or the die plate with the press dies. In addition, powder in the machine is to be sucked off. The installation effort is therefore significant. In addition, the operation of the rotary press is naturally interrupted during the assembly time. The replacement of cam elements therefore leads to a significant interruption of production time.

Aus WO 02/074528 ist bekannt geworden, die unteren Steuerkurventeile bei einer Rundlaufpresse zweiteilig auszuführen und radial bewegbar zu gestalten. Es ist jedoch bei der bekannten Presse nicht möglich, die Steuerkurventeile vor dem Ausbau der Stempel zu entfernen.Out WO 02/074528 It has become known to carry out the lower cam parts in a rotary press in two parts and to make radially movable. However, it is not possible in the known press to remove the cam parts before removing the stamp.

Aus JP 11 207499 ist bekannt geworden, ein die Oberstempel einer Rundlaufpresse führendes Steuerkurvenelement zweiteilig auszuführen. Durch Entfernen von zwei Führungsbauteilen nach dem Lösen von Schrauben lassen sich die Oberstempel entfernen. Die Entfernung aller Führungsbauteile sowohl für Ober- als auch Unterstempel unter Belassung der Stempel in der Maschine ist nicht möglich.Out JP 11 207499 It has become known, a two-part lead the upper punch of a rotary press leading cam member. By removing two guide components after loosening screws, the top punches can be removed. It is not possible to remove all guide components for upper and lower stamps while leaving the stamps in the machine.

Aus WO 03/020499 ist eine Rundlaufpresse gemäß dem Oberbegriff des Anspruchs 1 bekannt geworden, die Unterstempel bei einer Rundläuferpresse mit ihren Köpfen durch Steuerkurventeile zu führen, die sowohl innen als auch außen einen Kopf angreifen. Durch Lösen von Schrauben lassen sich die Steuerkurventeile radial bewegen. Lediglich das äußere Steuerkurventeil kann jedoch durch axiales Bewegen ausgebaut werden. Das Innere Steuerkurventeil kann hingegen vor Entfernen der Stempel nicht herausbewegt werden.Out WO 03/020499 a rotary press has become known according to the preamble of claim 1, to lead the lower punch in a rotary press with their heads by control cam parts which attack a head both inside and outside. By loosening the screws, the cam parts can be moved radially. However, only the outer cam part can be removed by axial movement. The inner cam part, however, can not be moved out before removing the stamp.

Der Erfindung liegt die Aufgabe zugrunde, eine Rundlaufpresse zu schaffen, bei der Steuerkurvenelemente ausgebaut werden können, ohne die Pressstempel vorher zu entfernen.The invention has for its object to provide a rotary press, can be removed in the control cams without removing the ram before.

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

Bei der Erfindung ist mindestens ein in Laufrichtung der Pressstempel die Pressstempelköpfe radial innen und/oder ein radial außen führendes Steuerkurventeil vorgesehen. Erfindungsgemäß sind die Steuerkurventeile lösbar am Kurventräger befestigt und können - wenn gelöst - radial von den Stempelköpfen fort bewegt werden, und zwar soweit, dass sie parallel zur Rotorachse an den Stempelköpfen vorbei nach oben oder unten herausgenommen werden können. Es versteht sich, dass die Steuerkurventeile nur von der Seite von den Pressstempeln radial fort bewegt werden kann, an der sie an den Pressstempelköpfen anliegen.In the invention, at least one in the running direction of the ram, the press ram heads radially inside and / or a radially outside leading cam part is provided. According to the invention, the control cam parts are releasably attached to the cam carrier and can - if solved - are moved radially away from the punch heads, to the extent that they can be taken parallel to the rotor axis past the stamp heads up or down. It is understood that the control cam parts can only be moved radially away from the side of the press dies, against which they rest against the press die heads.

Bei gegenüberliegend an den Stempelköpfen angreifenden Steuerkurventeilen sind die Steuerkurvenabschnitte jeweils einem eigenen Steuerkurventeil zugeordnet. Beide Steuerkurventeile sind lösbar am Kurventräger befestigt. Beide Steuerkurventeile weisen einen Steuerkurvenabschnitt auf, die auf gegenüberliegenden Seiten an den Köpfen der Pressstempel angreifen. Die Anordnung der Steuerkurventeile relativ zum Kurventräger ist derart, dass die Steuerkurventeile nach dem Lösen vom Kurventräger zunächst radial auseinanderbewegbar und anschließend parallel zur Achse des Rotors bewegt werden können.In opposite to the punch heads attacking control cam parts, the cam sections are each assigned to a separate control curve part. Both cam parts are releasably attached to the cam carrier. Both cam parts have a cam portion which engage on opposite sides of the heads of the ram. The arrangement of the control cam parts relative to the cam carrier is such that the control cam parts after release from the cam carrier can first be moved radially apart and then moved parallel to the axis of the rotor.

Das Steuerkurvenelement bei der Erfindung ist zweigeteilt und die Einzelteile können getrennt entfernt werden, ohne dass hierfür die Pressstempel zuvor entnommen werden müssen. Die Pressstempel können daher in der Presse verbleiben. Der Wechsel der Steuerkurvenelemente kann bei der Erfindung schnell vonstatten gehen, wodurch geringere Stillstandszeiten bei einer Umrüstung nötig werden.The cam member in the invention is divided into two parts and the items can be removed separately, without the need for the press stamps must be removed beforehand. The press punches can therefore remain in the press. The change of the cam elements can go quickly in the invention, whereby less downtime during retrofitting are necessary.

Besonders vorteilhaft ist die Erfindung bei dem Einsatz von Rundlaufpressen, bei denen beabsichtigt ist, auch zu Reinigungszwecken Rotor und Pressstempel in der Presse zu belassen. Dies ist möglich, indem der Rotor von einem dichtenden Gehäuse umgeben ist, das einen relativ kleinen Pressraum innerhalb des Pressengehäuses bildet. Das Gehäuse ist so ausgeführt, dass die aus dem Rotor herausragenden oberen und unteren Enden der Pressstempel, die mit den Steuerkurven zusammenwirken, außerhalb des Pressraums liegen. Die Pressstempel sind ihrerseits dichtend in den Bohrungen der Stempelaufnahmen geführt.Particularly advantageous is the invention in the use of rotary presses, in which it is intended, also for cleaning rotor and ram to leave in the press. This is possible by surrounding the rotor with a sealing housing which forms a relatively small pressing space within the press housing. The housing is designed so that the protruding from the rotor upper and lower ends of the ram, which cooperate with the cams, outside the baling chamber lie. The press punches are themselves sealingly guided in the bores of the stamp holders.

In einer Ausgestaltung der Erfindung weisen die Steuerkurventeile radiale Flanschabschnitte auf, wobei der Flanschabschnitt des radial äußeren Steuerkurventeils den Flanschabschnitt des radial inneren Steuerkurventeils überdeckt. In einer weiteren Ausführungsform ist vorgesehen, dass die Flanschabschnitte gegeneinander gespannt sind, wenn sie mittels Schrauben am Kurventräger befestigt sind.In one embodiment of the invention, the control cam parts have radial flange sections, wherein the flange section of the radially outer control cam section covers the flange section of the radially inner control cam section. In a further embodiment it is provided that the flange portions are tensioned against each other when they are fastened by means of screws on the cam carrier.

Es sind verschiedene Anbringungsweisen der Steuerkurventeile am Kurventräger denkbar. Eine besteht nach einer Ausgestaltung der Erfindung darin, dass das radial innere Steuerkurventeil am Kurventräger befestigt ist und das radial äußere Steuerkurventeil am radial inneren Steuerkurventeil befestigt ist. Alternativ kann nach einer anderen Ausgestaltung der Erfindung vorgesehen sein, dass das innere Steuerkurventeil einen radial nach außen weisen Flanschabschnitt aufweist, der den äußeren Steuerkurventeil überdeckt.There are different ways of mounting the cam parts on the cam carrier conceivable. One according to an embodiment of the invention is that the radially inner cam part is attached to the cam carrier and the radially outer cam part is fixed to the radially inner cam part. Alternatively it can be provided according to another embodiment of the invention that the inner cam part has a radially outwardly pointing flange portion which covers the outer cam part.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand von Zeichnungen näher erläutert.

Fig. 1
zeigt schematisch die Abwicklung eines Rotors einer Tablettenpresse gemäß Fig. 2.
Fig. 2
zeigt den schematischen Aufbau einer Rundlaufpresse mit Führungskurvenelementen nach dem Stand der Technik.
Fig. 3
zeigt perspektivisch einen Teil eines Rotors mit erfindungsgemäßem Steuerkurvenelement.
Fig. 4
zeigt eine ähnliche Darstellung wie Fig. 3, jedoch von der entgegengesetzten Seite des Steuerkurvenelements.
Fig. 5
zeigt perspektivisch die auseinandergebauten Steuerkurventeile des Steuerkurvenelements nach den Fign. 3 und 4.
Fig. 6
zeigt eine zweite Ausführungsform eines Steuerkurvenelements.
Fig. 7
zeigt eine dritte Ausführungsform eines Steuerkurvenelements.
Fig. 8
zeigt einen Schnitt durch die Darstellung nach Fig. 4.
Fign. 9 - 12
zeigen die Schritte zum Ausbau der Steuerkurventeile des Steuerkurvenelements nach Fig. 8.
Embodiments of the invention will be explained in more detail with reference to drawings.
Fig. 1
shows schematically the development of a rotor of a tablet press according to Fig. 2 ,
Fig. 2
shows the schematic structure of a rotary press with guide cam elements according to the prior art.
Fig. 3
shows in perspective a part of a rotor with inventive cam element.
Fig. 4
shows a similar representation as Fig. 3 but from the opposite side of the cam member.
Fig. 5
shows in perspective the disassembled cam parts of the cam after the FIGS. 3 and 4 ,
Fig. 6
shows a second embodiment of a control cam element.
Fig. 7
shows a third embodiment of a control cam element.
Fig. 8
shows a section through the illustration Fig. 4 ,
FIGS. 9 - 12
show the steps for removing the control cam parts of the cam after Fig. 8 ,

Ein Gestell 10 einer Rundlaufpresse nach Fig. 2 weist eine untere Plattform 12 und eine obere Plattform 14 auf. Die untere Plattform 12 lagert eine Antriebswelle, welche über ein Getriebe 18 von einem Elektromotor 20 angetrieben ist. Auf der Welle 16 sitzt ein Rotor 22, der eine obere Stempelaufnahme 24 und eine untere Stempelaufnahme 26 aufweist für Oberstempel 28 und Unterstempel 30. Die Pressstempel 28, 30 wirken mit Bohrungen einer Matrizenscheibe 32 zusammen, die im gezeigten Fall einteilig mit dem Rotor 22 geformt ist.A frame 10 of a rotary press after Fig. 2 has a lower platform 12 and an upper platform 14. The lower platform 12 supports a drive shaft, which is driven via a gear 18 by an electric motor 20. On the shaft 16 is seated a rotor 22, which has an upper punch holder 24 and a lower punch holder 26 for upper punch 28 and lower punch 30. The pressing rams 28, 30 cooperate with bores of a die plate 32, which in the case shown formed integrally with the rotor 22 is.

In Fig. 2 hält ein oberer Kurventräger 34 ein Steuerkurvenelement 36. Ein unterer Kurventräger 38 hält ein unteres Steuerkurvenelement 40. Im Bereich einer Druckstation wirken auf die Köpfe der Pressstempel 28, 30 eine obere Druckrolle 42 und eine untere Druckrolle 44. Im Bereich der Druckrollen werden die Pressstempel 28, 30 in die Matrizenbohrungen hineingepresst zwecks Komprimierung des pulverförmigen Materials in den Bohrungen, das zuvor von einer nicht gezeigten Füllvorrichtung in die Bohrungen eingetragen worden ist. Die gezeigte Rundlaufpresse nach Fig. 2 entspricht dem Stand der Technik.In Fig. 2 An upper cam carrier 34 holds a cam member 36. A lower cam carrier 38 holds a lower cam member 40. In the region of a printing station act on the heads of the plunger 28, 30, an upper pressure roller 42 and a lower pressure roller 44. In the area of the pressure rollers press punches 28th , 30 pressed into the die holes for the purpose of compressing the powdery material in the holes, previously entered by a filling device, not shown in the holes has been. The revolving press shown Fig. 2 corresponds to the state of the art.

In Fig. 1 ist eine Abwicklung des Rotors gezeigt. Gleiche Teile sind mit gleichen Bezugszeichen versehen. Bei 46 ist eine Füllvorrichtung gezeigt, welche Matrizenbohrungen 48 der Matrizenscheibe 32 mit pulverförmigem Material füllt. Man erkennt, dass außerhalb der Druckrollen 42, 44 bzw. 42a, 44a die Köpfe der Pressstempel 28, 30 mit Hilfe von oberen Steuerkurvenelementen 50 und unteren Steuerkurvenelementen 52 geführt sind. Im Bereich 54 findet das Befüllen statt. Im Bereich 56 findet ein Dosieren des Pressmaterials statt, wobei die Position der Unterstempel 30 das Füllvolumen vorgeben. Durch die Druckrollen 42, 44 erfolgt eine Vorpressung. Durch die Druckrollen 42a, 44a erfolgt die Hauptpressung. Im Bereich 58 werden die Presslinge von den Unterstempeln 30 ausgestoßen.In Fig. 1 a development of the rotor is shown. Identical parts are provided with the same reference numerals. At 46, a filling device is shown which fills die bores 48 of the die plate 32 with powdered material. It can be seen that outside the pressure rollers 42, 44 or 42a, 44a, the heads of the pressing rams 28, 30 are guided by means of upper control cam elements 50 and lower control cam elements 52. In area 54, filling takes place. In area 56, a metering of the pressing material takes place, the position of the lower punches 30 predetermining the filling volume. By the pressure rollers 42, 44 is a pre-pressing. By the pressure rollers 42a, 44a, the main pressing occurs. In area 58, the compacts are ejected from the lower punches 30.

In den Fign. 3 und 4 ist perspektivisch der Rotor 22 gemäß Fig. 2 angedeutet. Man erkennt bei 28 einen Oberstempel mit einem Kopf 60. Außerdem erkennt man in Fig. 3 Bohrungen 62, welche Oberstempel 28 führen. In den Fign. 3 und 4 ist außerdem ein Steuerkurvenelement 64 gezeigt, das aus einem radial äußeren Steuerkurventeil 66 und einem radial inneren Steuerkurventeil 68 zusammengesetzt ist. Jedes Steuerkurventeil 66, 68 besitzt einen Steuerkurvenabschnitt 70 bzw. 72. Zusammengesetzt, wie in den Fign. 3 und 4 gezeigt, bilden die Steuerkurvenabschnitte 70, 72 eine Steuerkurve in dem gezeigten Bereich am Umfang des Rotors 22.In the FIGS. 3 and 4 is perspectively the rotor 22 according to Fig. 2 indicated. One recognizes at 28 an upper stamp with a head 60. In addition one recognizes in Fig. 3 Holes 62, which lead upper punch 28. In the FIGS. 3 and 4 In addition, a cam member 64 is shown, which is composed of a radially outer cam member 66 and a radially inner cam member 68. Each cam part 66, 68 has a cam portion 70 and 72, respectively. Assembled as in FIGS FIGS. 3 and 4 2, the control cam sections 70, 72 form a control cam in the area shown on the circumference of the rotor 22.

Das Zusammenwirken der Steuerkurventeile 66, 68 ist in Fig. 8 zu erkennen. Steuerkurvenabschnitte 70, 72 untergreifen den Stempelkopf 60, wobei ein weiterer Steuerkurvenabschnitt 74 mit der Oberseite des Stempelkopfs 60 zusammenwirkt. Das äußere Steuerteil 66 weist einen radial nach innen weisenden Flansch 76 auf. Inneres Steuerteil 68 weist einen radial nach innen weisenden Flansch 78 aus. Letzterer liegt auf einer planen Fläche eines Kurventrägers 80, und der Flansch 76 liegt auf einer zugeordneten höheren Fläche des Kurventrägers 80 auf. Die beiden Flansche 76, 78 werden mit Hilfe von Schrauben, wie sie bei 82 in Fign. 3 und 4 zu erkennen sind, am Kurventräger 80 befestigt. Man erkennt aus Fig. 8, dass die Ausnehmung im Kurvensteuerteil 66, welche den Kopf 60 des Stempels 28 aufnimmt, breiter ist als für die Führung erforderlich wäre. Es ist mithin ein Freiraum 84 geschaffen. Man erkennt ferner, dass zwischen dem Kurventräger 80 und dem Steuerteil 68 ein Spalt 86 verbleibt.The interaction of the control cam parts 66, 68 is in Fig. 8 to recognize. Cam portions 70, 72 engage under the punch head 60, wherein a further cam portion 74 cooperates with the top of the punch head 60. The outer control part 66 has a radially inwardly pointing flange 76. Inner control part 68 has a radially inwardly pointing flange 78. The latter lies on a flat surface of a cam carrier 80, and the flange 76 rests on an associated higher surface of the cam carrier 80. The two flanges 76, 78 are made by means of screws, as at 82 in FIGS. 3 and 4 can be seen attached to the cam carrier 80. One recognizes Fig. 8 in that the recess in the cam control part 66, which receives the head 60 of the punch 28, is wider than would be required for the guide. It is thus created a free space 84. It can also be seen that a gap 86 remains between the cam carrier 80 and the control part 68.

Werden die Schrauben, wie in Fig. 9 gezeigt, entfernt, kann das äußere Steuerkurventeil 66 radial nach außen bewegt werden bis in Anlage an eine Berandung 90 des Rotors 22. Dabei bewegt sich der Stempelkopf 60 in den Freiraum 84 und stößt gegen die zugekehrte Seite der Ausnehmung des Steuerteils 66 an. Wie sich aus Fig. 10 ergibt, kann das Steuerteil 66 nunmehr nach oben bewegt und vom Stempelkopf 60 befreit werden. In Fig. 11 ist gezeigt, wie anschließend das Steuerkurventeil 68 radial nach innen verschoben werden kann und den Freiraum 86 beseitigt. Dabei liegt das Steuerkurventeil 68 gegen den Kurventräger 80 an. Wie aus Fig. 12 dann zu sehen, kann auch das innere Steuerteil 68 nach oben entfernt werden.Be the screws, as in Fig. 9 shown, the outer cam part 66 can be moved radially outward until abutting a boundary 90 of the rotor 22. In this case, the punch head 60 moves into the free space 84 and abuts against the facing side of the recess of the Control parts 66 on. As it turned out Fig. 10 results, the control part 66 can now be moved up and released from the punch head 60. In Fig. 11 is shown how subsequently the cam member 68 can be moved radially inward and eliminates the free space 86. In this case, the cam member 68 abuts against the cam carrier 80. How out Fig. 12 then to see, also the inner control part 68 can be removed upwards.

Man erkennt, dass das Steuerkurvenelement 64 vollständig entfernt werden kann, ohne dass die Pressstempel 28 ausgebaut werden müssen. Gleichwohl ist natürlich ein Ausbau der Pressstempel möglich, wenn beispielsweise eine andere Spezifikation verwendet werden soll.It can be seen that the control cam element 64 can be completely removed without the press ram 28 having to be removed. Nevertheless, it is of course possible to remove the press dies if, for example, another specification is to be used.

Das in den Fign. 3 und 4 bzw. 8 bis 12 dargestellte Steuerkurvenelement 64 ist in Fig. 5 auseinandergezogen dargestellt. Die Fign. 6 und 7 zeigen andere konstruktive Ausgestaltungen. Die Ausführungsform nach Fig. 6 weist ein inneres Steuerteil 68a und eine äußeres Steuerteil 66a auf. Die Steuerkurvenabschnitte 70, 72 gleichen denen nach Fig. 5. Während in Fig. 5 beide Steuerteile 66, 68 über Flansche 76, 78 am Kurventräger 80 befestigt werden, wird bei der Ausführungsform nach Fig. 6 das äußere Steuerteil 66a am inneren Steuerteil 68a befestigt. Ein radial nach außen weisender Flansch 92 des inneren Steuerteils 68a überdeckt dabei die Oberseite des äußeren Steuerteils 66a.That in the FIGS. 3 and 4 or 8 to 12 illustrated cam member 64 is in Fig. 5 shown pulled apart. The FIGS. 6 and 7 show other constructive embodiments. The embodiment according to Fig. 6 has an inner control part 68a and an outer control part 66a. The cam sections 70, 72 are similar to those Fig. 5 , While in Fig. 5 Both control parts 66, 68 are secured via flanges 76, 78 on the cam carrier 80, in the embodiment according to Fig. 6 the outer control part 66a is fixed to the inner control part 68a. A radially outwardly facing flange 92 of the inner control part 68a covers the top of the outer control part 66a.

Bei der Ausführungsform nach Fig. 7 gleicht das äußere Steuerteil 66b weitgehend dem Steuerteil 66a nach Fig. 6. Man erkennt auch eine Bohrung 94 für die Verschraubung mit dem inneren Steuerteil 68b, dass ebenfalls Bohrungen 96 aufweist. Im gezeigten Fall fluchten die Oberseiten der Steuerteile 68b, 66b. Das innere Steuerteil 68b wird wiederum mit Hilfe des Flansches 78 an in diesen Figuren nicht gezeigtem Kurventräger 80 gemäß den Fign. 8 bis 12 befestigt.In the embodiment according to Fig. 7 the outer control part 66b largely follows the control part 66a Fig. 6 , It also recognizes a bore 94 for the screw with the inner control part 68b, which also has holes 96. In the case shown, the upper sides of the control parts 68b, 66b are aligned. The inner control part 68b is in turn by means of the flange 78 to not shown in these figures cam carrier 80 according to the FIGS. 8 to 12 attached.

Claims (9)

  1. A rotary tablet compactor with a frame (10), a rotor (22), which is pivot-mounted in the frame (10) around a vertical axis and driven and which has upper and lower punch holding means for upper and lower punches (28, 30), which work together with bore holes of a die plate (32) of the rotor (22), and upper and lower control cam elements (36, 40), which are releasably fastenable on a cam carrier (34, 38, 80) of the frame (10) and guide heads of the punches (28, 30) during the rotation of the rotor (22) by means of control cam sections (70, 72, 74), wherein at least one control cam element (36, 40) is formed on opposite-lying sides of the punch heads by a radially inward and a radially outward lying control cam part (66, 68), which are releasably fastenable on the cam carrier (34, 38, 80) and each control cam part can be moved away radially by the punch heads after disengaged fastening, characterized in that the cam carrier (34, 38, 80) is arranged radially within the control cam elements (36, 40) and the control cam parts (66, 68) are attached to the cam carrier (34, 38, 80) such that they are removable upwards or respectively downwards past the punch heads (60) after their radial movement parallel to the rotor axis.
  2. The rotary tablet compactor according to claim 1, characterized in that a recess of the outer control cam part (66) receiving the punch heads (60) has a first inner free space (84) for partially receiving the punch heads (60) during the radial movement of the outer control cam part (66, 66a, 66b) upwards and between the inner control cam part (68, 68a, 68b) and the cam carrier a second free space (86) is provided for releasing the punch heads during radial movement of the inner control cam part.
  3. The rotary tablet compactor according to claim 1 or 2, characterized in that the control cam element or respectively the control cam parts (66, 68) have radial flange sections (76, 78), which rest on a radially level surface of the cam carrier, wherein the radial surface forms a guide for the radial movement of the control cam element or respectively of the control cam part.
  4. The rotary tablet compactor according to claim 3, characterized in that a flange section (76) of the radially outer control cam part (66) overlaps a flange section (78) of the radially inner control cam part (68).
  5. The rotary tablet compactor according to claim 4, characterized in that the flange sections (76, 78) are tensioned against each other when they are fastened by means of screws (82) on the cam carrier (80).
  6. The rotary tablet compactor according to claims 2 to 5, characterized in that the radially inner control cam part (68a, 68b) is fastened on the cam carrier (80) and the radially outer control cam part (66a, 66b) is fastened on the radially inner control cam part (68a, 68b).
  7. The rotary tablet compactor according to claim 6, characterized in that the inner control cam part (68a) has a radially outward pointing flange section (92), which overlaps the outer control cam part (66a).
  8. The rotary tablet compactor according to one of claims 2 to 7, characterized in that the control cam sections (70, 72) are in engagement with the bottom side of the punch heads (60) and the control cam section of the outer control cam part (66) are also in engagement with the top side of the punch heads such that the outer control cam part (66) can be moved radially outward.
  9. The rotary tablet compactor according to one of claims 2 to 8, characterized in that the flange sections (76, 78) next to the control cam parts rest on radially level surface sections of the cam carrier (80).
EP08018777.6A 2007-11-30 2008-10-28 Rotary tablet compactor Not-in-force EP2065175B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007057790A DE102007057790B4 (en) 2007-11-30 2007-11-30 Rotary press

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EP2065175A2 EP2065175A2 (en) 2009-06-03
EP2065175A3 EP2065175A3 (en) 2009-08-12
EP2065175B1 true EP2065175B1 (en) 2014-07-30

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EP08018777.6A Not-in-force EP2065175B1 (en) 2007-11-30 2008-10-28 Rotary tablet compactor

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EP (1) EP2065175B1 (en)
DE (1) DE102007057790B4 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011101286B4 (en) 2011-05-10 2013-10-17 Fette Compacting Gmbh Rotary press and method for operating a rotary press
DE102011101292B4 (en) * 2011-05-10 2013-11-28 Fette Compacting Gmbh Coding element for the assembly of at least one cam carrier of a rotor of a rotary press and method for loading a cam carrier of a rotor of a rotary press and cam arrangement and rotor for a rotary press
DE102014113211B4 (en) * 2014-05-07 2020-01-23 Fette Compacting Gmbh Rotary press
CN104476796B (en) * 2014-11-07 2016-01-20 重庆麦斯特精密机械有限公司 A kind of electric-controlled type standard specimen rotating material-pressing machine
EP3517288B1 (en) 2018-01-25 2023-04-12 Korsch AG Catch rail for a rotary press
IT202000000112A1 (en) * 2020-01-08 2021-07-08 Ima Spa Tablet press machine.
KR102549078B1 (en) * 2022-12-30 2023-06-29 (주)프렌드니어 Track rail for rotary tablet compression molding machine equipped with punching hole zero point setting means

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1274883B (en) * 1994-08-05 1997-07-25 Ima Spa DOSING DEVICE IN COMPRESSING MACHINES FOR THE PRODUCTION OF TABLETS.
JP2871659B1 (en) * 1998-01-22 1999-03-17 株式会社畑鉄工所 Rotary powder compression molding machine
ITBO20010141A1 (en) * 2001-03-16 2002-09-16 Ima Spa COMPRESSING MACHINE FOR THE PRODUCTION OF TABLETS
JP5031178B2 (en) * 2001-09-05 2012-09-19 コートイ、ナムローゼ、フェンノートシャップ Rotating tablet press and cleaning method for such a press
US6972105B2 (en) * 2003-03-31 2005-12-06 Court Oy Nv Rotary tablet press
DE102004040163C5 (en) 2004-08-19 2009-06-18 Fette Gmbh Rotary tablet press
DE102006020214B3 (en) * 2006-05-02 2007-12-27 Fette Gmbh Device for guiding lower punches
US7553436B2 (en) * 2007-11-02 2009-06-30 Metropolitan Computing Corporation System and method for optimizing tablet formation by a rotary press machine

Also Published As

Publication number Publication date
EP2065175A2 (en) 2009-06-03
DE102007057790A1 (en) 2009-06-04
DE102007057790B4 (en) 2011-02-10
US20090139417A1 (en) 2009-06-04
US7740468B2 (en) 2010-06-22
EP2065175A3 (en) 2009-08-12

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