EP2707209B1 - Pressing assembly for a press, and rotary printing press - Google Patents

Pressing assembly for a press, and rotary printing press Download PDF

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Publication number
EP2707209B1
EP2707209B1 EP12719262.3A EP12719262A EP2707209B1 EP 2707209 B1 EP2707209 B1 EP 2707209B1 EP 12719262 A EP12719262 A EP 12719262A EP 2707209 B1 EP2707209 B1 EP 2707209B1
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EP
European Patent Office
Prior art keywords
press
pressing apparatus
pressing
punch
force
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EP12719262.3A
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German (de)
French (fr)
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EP2707209A1 (en
Inventor
Kai Hübner
Werner Seifert
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Fette Compacting GmbH
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Fette Compacting GmbH
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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
    • B30B11/006—Control arrangements for roller presses
    • 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

Definitions

  • the invention relates to a printing device for a press, in particular for a rotary press, wherein the printing device is adapted to cooperate during operation of the press with at least one press ram of the press, so that the at least one press ram in a recording befindliches pressed material, wherein the printing device a Force measuring device for measuring the force exerted by the at least one press ram force applied to the printing device.
  • the invention also relates to a rotary press having a rotor rotatable about a vertical axis, the rotor having upper and lower punch guides for upper and lower rams and a die plate between the ram guides, the rams cooperating with receptacles of the die plate, and at least one Filling and dosing station and with at least one upper pressure device and at least one lower pressure device, which cooperate in operation with the upper press dies and with the lower press dies.
  • Such a rotary press is known, for example from DE 10 2007 057 791 B4 , It comprises upper and lower printing devices, wherein an upper printing device and a lower printing device together form a printing station.
  • Several printing stations are provided, for example a pre-printing station and a main printing station.
  • each printing device comprises a pressure roller which cooperates with the punch heads.
  • force measuring devices On the basis of a force measurement carried out during the pressing process, conclusions can be drawn about the quality of the tablets produced.
  • the force measuring devices are within the Pressure devices arranged and not accessible from the outside in the operating position of the press.
  • the invention has the object to enable a maintenance, repair or replacement of a force measuring device of a printing device in a simple and cost-saving manner.
  • the invention solves the problem on the one hand by a printing device for a rotary press, wherein the printing device is adapted to cooperate with at least one ram of the rotary press during operation of the rotary press, so that the at least one ram presses in a recording befindliches material, wherein the printing device a Force measuring device for measuring the force exerted by the at least one press ram force on the printing device, wherein the force measuring device comprises a pressure piece and a force sensor, which are arranged in a receptacle of the printing device, and wherein at least a portion of the printing device between a closed operating position, in which Pressure element and the force sensor from the outside are not accessible, and an open maintenance position is movable, wherein the pressure piece and / or the force sensor in the open maintenance position are accessible from the outside, so that a e Removal of the pressure piece and / or the force sensor for maintenance, repair or replacement is possible.
  • the rotary press may be a rotary tablet press, as known in the art.
  • the printing device according to the invention may in particular be part of a printing station of the press.
  • at least one upper printing device and at least one lower printing device can be provided, which together form a pre-printing and / or main printing station of the press.
  • the printing device has at least one pressure element, for example a pressure roller, which comes into contact with the press dies during operation of the press and presses these in recordings of the press for the material to be pressed, for example die bores.
  • the material can be powdery. It is pressed in a conventional manner from the press dies to a compact, for example a tablet.
  • the printing device according to the invention also has a force measuring device in a manner known per se. With her is the in operation between the printing device, in particular a pressure element, such as a pressure roller, and the or the press dies measured acting force. From this it is possible to draw conclusions about the quality of the produced compacts.
  • the printing device has a portion which is movable from a closed operating position for the operation of the press in an open maintenance position for maintenance or the like of the force measuring device.
  • the force measuring device arranged within the pressure device is at least partially accessible to an operator, in particular completely. It can thus be a partial or complete removal of the force measuring device for maintenance, repair or replacement with another force measuring device.
  • Disassembly of the printing device, such as a printing element, such as a pressure roller is not required. Rather, it can be made accessible in a simple manner by the separation of the printing device in the field of force measuring device.
  • a maintenance, repair or replacement of the force measuring device compared to the prior art, both in terms of time and in terms of applied by an operator force is greatly simplified.
  • the movable portion remains connected during its movement between the open and the closed operating position at any time with the fixed portion of the printing device.
  • the movable section does not comprise a pressure element, in particular if the movable section does not comprise a pressure roller, it may also be provided that the movable section is released from the fixed section in its open maintenance position.
  • the force measuring device comprises a so-called pressure piece and a force sensor or a so-called load cell , The pressure piece in operation exposed to the forces or pressures is and transmits them to the force sensor. It may be sufficient for maintenance, repair or replacement if only the pressure piece is removed. It may also be sufficient to remove only the force sensor.
  • the force measuring device is not accessible in the closed operating position of the movable portion from the outside substantially. Furthermore, the force measuring device is arranged in a receptacle of the printing device. With these embodiments, the force measuring device is optimally protected during operation of the press.
  • the movable portion of the printing device between the closed operating position and the open maintenance position be pivotable, in particular by means of a pivot bearing.
  • the movable section may be pivotable about a pivot axis that is vertical or inclined about an axis of rotation of a rotor of the press.
  • the pressure device can have, for example, an upper and a lower half or housing half, wherein the force measuring device is received between the two halves. It can then the upper or lower half of the printing device from the connected with the lower and upper half closed operating position of the lower or upper half of the printing device are pivoted away in the open maintenance position.
  • pivoting also includes a twisting the movable portion of the printing device relative to the remaining, fixed portion of the printing device about a common central axis or an internal axis of rotation.
  • the movable portion of the printing device between the closed operating position and the open maintenance position is translationally displaceable.
  • the printing device may comprise a pressure roller, which cooperates with the at least one press ram during operation of the press, wherein the pressure roller is mounted on the movable portion of the printing device.
  • the pressure element of the printing device for example a pressure roller, can be arranged, for example, on a pivotable upper or lower half.
  • the invention thus offers great advantages, since they do not have to be dismantled for access to the force measuring device.
  • the access to the force measuring device in this embodiment is particularly easy.
  • the force measuring device may for example be arranged in a vertically extending pressure roller bolt, on the outside of the pressure roller is attached.
  • the pressure roller is mounted on the non-movable portion of the printing device.
  • the invention also relates to a rotary press having a rotor rotatable about a vertical axis, the rotor having upper and lower punch guides for upper and lower rams and a die plate between the ram guides, the rams cooperating with receptacles of the die plate, and at least one Filling and dosing station, as well as at least one upper pressure device and at least one lower pressure device, which cooperate in operation with the upper ram, wherein the upper pressure device and / or the lower pressure device is formed in the manner described above according to the invention.
  • the die plate can be formed integrally or consist of individual die segments.
  • the recordings can be so-called die holes. Matrizenhülsen may be arranged in the die holes. But this is not mandatory.
  • Fig. 1 shows the structure of a known rotary tablet press.
  • the rotor of the rotary tablet press is shown, which is rotated by a rotary drive, not shown, about a vertical axis, as illustrated by the arrow 12.
  • the rotor has an upper punch guide 14 and a lower punch guide 16 for receiving upper punches 18 and lower punches 20 of the press.
  • the upper punch 18 and lower punch 20 cooperate with receptacles 22 of a die plate 24, in this case die holes, which is arranged between the punch guides 14, 16.
  • the receptacles 22 are supplied with powdered pressing material.
  • the filling device 26 is part of a filling and metering station of the press, which further comprises filling curve elements 28 and metering curve elements 30.
  • the rotor further includes lower ejection cam members 32 and upper elevational cam members 33.
  • the pre-printing station 34 has an upper pressure device 38 with an upper pressure roller 40 and a lower pressure device 42 with a lower pressure roller 44.
  • the main pressure station 36 also comprises an upper pressure device 46 with an upper pressure roller 48 and a lower pressure device 50 with a lower pressure roller 52.
  • the upper and lower punches 18, 20 cooperate with the pressure rollers 40, 44, 48, 52 in a conventional manner to compress the filled into the receptacles 22 pressing material into tablets.
  • 36 downstream is a scraper 54 which at this time from the lower punches 20 on the surface of the die plate 24 pushed tablets in a conventional manner a tablet outlet 56 supplies.
  • the lower pressure devices 42, 50 each include a motor drive 58, 60, with which the vertical distance between the upper pressure rollers 40, 48 and the lower pressure rollers 44, 52 can be varied. As in Fig. 1 illustrated by the arrows marked F, act in the operation of the press between the upper and lower punches 18, 20 and the pressure rollers 40, 44, 48, 52 and the pressure devices 38, 42, 46, 50 carrying these forces. For measuring these forces, force measuring devices are arranged in at least some, preferably all, pressure devices 38, 42, 46, 50.
  • Fig. 2 shows in a perspective view of a printing device according to the invention, which in the in Fig. 1 shown rotary press can be provided.
  • a lower pressure device 62 is shown.
  • printing device 62 has a lower half 64 and an upper half 66 which carries the pressure roller 68 in the example shown.
  • the pressure device 62 is supported by a pressure pin 70 arranged on the lower half 64 in operation on an abutment.
  • the lower half 64 of the printing device 62 has a lower housing 72 with a receptacle 74 for a pressure piece 76 of a force measuring device.
  • the force measuring device also includes a in Fig. 2 at the bottom of the receptacle 74 to be detected force sensor 78. In the in Fig. 2 shown operating position, the pressure piece 76 of the force measuring device is taken for illustration from the receptacle 74.
  • the upper half 66 of the printing device 62 has an upper housing 80, on which the pressure roller 68 is rotatably supported about a horizontal axis 82. Via a pivot bearing 84, the upper housing 80 of the upper half 66 is pivotally connected to a head portion 88 of the lower housing 72 of the lower half 64 about a vertical pivot axis indicated at 86. In this way, the upper half 66 is between the in Fig. 2 shown opened maintenance position in which the force measuring device, in particular the pressure piece 76 and the force sensor 78 are accessible to an operator from the outside, pivotable in a closed operating position, in which the force measuring device, in particular the pressure piece 76 and the force sensor 78 from the outside substantially not are accessible.
  • the printing device 62 Due to the configuration of the printing device 62 according to the invention access to the force measuring device for maintenance, repair or replacement in a simple manner possible without the printing device 62, and in particular their pressure roller 68 must be partially or completely disassembled.
  • the two halves 64, 66 of the printing device 62 remain connected to each other via the pivot bearing 84.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Control Of Presses (AREA)

Description

Die Erfindung betrifft eine Druckeinrichtung für eine Presse, insbesondere für eine Rundläuferpresse, wobei die Druckeinrichtung dazu ausgebildet ist, im Betrieb der Presse mit mindestens einem Pressstempel der Presse zusammenzuwirken, so dass der mindestens eine Pressstempel in einer Aufnahme befindliches Material verpresst, wobei die Druckeinrichtung eine Kraftmesseinrichtung zur Messung der von dem mindestens einen Pressstempel auf die Druckeinrichtung ausgeübten Kraft umfasst.The invention relates to a printing device for a press, in particular for a rotary press, wherein the printing device is adapted to cooperate during operation of the press with at least one press ram of the press, so that the at least one press ram in a recording befindliches pressed material, wherein the printing device a Force measuring device for measuring the force exerted by the at least one press ram force applied to the printing device.

Die Erfindung betrifft außerdem eine Rundläuferpresse mit einem um eine vertikale Achse drehbaren Rotor, wobei der Rotor eine obere und eine untere Stempelführung für obere und untere Pressstempel und eine Matrizenscheibe zwischen den Stempelführungen aufweist, wobei die Pressstempel mit Aufnahmen der Matrizenscheibe zusammenwirken, ferner mit mindestens einer Füll- und Dosierstation sowie mit mindestens einer oberen Druckeinrichtung und mindestens einer unteren Druckeinrichtung, die im Betrieb mit den oberen Pressstempeln und mit den unteren Pressstempeln zusammenwirken.The invention also relates to a rotary press having a rotor rotatable about a vertical axis, the rotor having upper and lower punch guides for upper and lower rams and a die plate between the ram guides, the rams cooperating with receptacles of the die plate, and at least one Filling and dosing station and with at least one upper pressure device and at least one lower pressure device, which cooperate in operation with the upper press dies and with the lower press dies.

Eine derartige Rundläuferpresse ist beispielsweise bekannt aus DE 10 2007 057 791 B4 . Sie umfasst obere und untere Druckeinrichtungen, wobei jeweils eine obere Druckeinrichtung und eine untere Druckeinrichtung gemeinsam eine Druckstation bilden. Es sind mehrere Druckstationen vorgesehen, beispielsweise eine Vordruckstation und eine Hauptdruckstation. Bei der bekannten Rundläuferpresse umfasst jede Druckeinrichtung eine Druckrolle, die mit den Stempelköpfen zusammenwirkt. Es ist bekannt, den Druckeinrichtungen Kraftmesseinrichtungen zuzuordnen. Auf Grundlage einer im Zuge des Pressvorgangs durchgeführten Kraftmessung können Rückschlüsse auf die Qualität der hergestellten Tabletten getroffen werden. Die Kraftmesseinrichtungen sind dabei innerhalb der Druckeinrichtungen angeordnet und in der Betriebsstellung der Presse von außen nicht zugänglich.Such a rotary press is known, for example from DE 10 2007 057 791 B4 , It comprises upper and lower printing devices, wherein an upper printing device and a lower printing device together form a printing station. Several printing stations are provided, for example a pre-printing station and a main printing station. In the known rotary press each printing device comprises a pressure roller which cooperates with the punch heads. It is known to associate the pressure devices with force measuring devices. On the basis of a force measurement carried out during the pressing process, conclusions can be drawn about the quality of the tablets produced. The force measuring devices are within the Pressure devices arranged and not accessible from the outside in the operating position of the press.

Es kann erforderlich sein, die Kraftmesseinrichtungen beispielsweise für eine Wartung oder Reparatur zu entnehmen. Auch kann es erforderlich sein, eine vorhandene Kraftmesseinrichtung gegen eine andere Kraftmesseinrichtung auszutauschen, beispielsweise wenn sich der von der Kraftmesseinrichtung zu erfassende Presskraftbereich stark ändert. Dies ist zum Beispiel der Fall bei einem Wechsel zwischen einem Betriebszustand, bei dem Einschichttabletten verpresst werden zu einem Betriebszustand, bei dem Mehrschichttabletten verpresst werden. Ebenfalls erhebliche Presskraftunterschiede bestehen zwischen der Vordruckstation und der Hauptdruckstation. Soll beispielsweise eine bislang als Hauptdruckstation genutzte Druckstation in einem anderen Betriebsmodus als Vordruckstation genutzt werden, oder umgekehrt, kann ebenfalls ein Austausch der Kraftmesseinrichtung erforderlich werden. Bei Druckeinrichtungen bzw. Rundläuferpressen nach dem Stand der Technik ist hierzu eine aufwendige Demontage zumindest der Druckrolle der jeweiligen Druckeinrichtung oder sogar eine umfassende Demontage der gesamten Druckeinrichtung erforderlich. Eine solche Rundlauftablettiermaschine ist bekannt aus EP 0 460 295 A1 . Dort erfolgt eine vollständige Abtrennung der Druckrolle mit ihrem Lagerbock und ihrer Linearführung von einem Antriebsgehäuse. Nach dieser Ablösung besteht die Möglichkeit, das Antriebsgehäuse mit seinen Bestandteilen, zu denen auch eine Kraftmesseinrichtung gehört, als eine in sich geschlossene Baueinheit von der Tablettiermaschine zu lösen. Aufgrund des hohen Gewichts der beteiligten Bauteile, insbesondere der Druckrollen, ist hiermit ein großer Kraftaufwand für die jeweilige Bedienperson verbunden. Außerdem ist dieses Vorgehen auch in zeitlicher Hinsicht von erheblichem Aufwand.It may be necessary to remove the force measuring devices, for example for maintenance or repair. It may also be necessary to replace an existing force measuring device with another force measuring device, for example if the pressing force range to be detected by the force measuring device changes greatly. This is the case, for example, when switching between an operating state in which monolayer tablets are compressed to an operating state in which multilayer tablets are compressed. Also considerable differences in press force exist between the pre-press station and the main printing station. If, for example, a print station previously used as a main printing station is to be used in a different operating mode as a pre-printing station, or vice versa, an exchange of the force measuring device may also be required. In printing devices or rotary presses according to the prior art, a costly disassembly of at least the pressure roller of the respective printing device or even a comprehensive disassembly of the entire printing device is required for this purpose. Such a rotary tableting machine is known from EP 0 460 295 A1 , There is a complete separation of the pressure roller with its bearing block and its linear guide of a drive housing. After this replacement there is the possibility of the drive housing with its components, which includes a force measuring device, as a self-contained assembly of the tabletting machine to solve. Due to the high weight of the components involved, in particular the pressure rollers, this is a great effort for each operator connected. Moreover, this procedure is also in terms of time of considerable effort.

Aus DE 10 2005 040 186 A1 ist eine Kraftmessvoruchtung für eine Einpressvoruchtung bekannt. Weiterhin ist aus DE 102 51 387 A1 eine weitere elektrische Pressvoruchtung bekannt.Out DE 10 2005 040 186 A1 is a Kraftmesspfuchtung known for a Einpressgefuchtung. Furthermore, it is off DE 102 51 387 A1 another electrical Pressuchtucht known.

Ausgehend von dem erläuterten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Wartung, Reparatur oder einen Austausch einer Kraftmesseinrichtung einer Druckeinrichtung in einfacher und kostensparender Weise zu ermöglichen.Based on the explained prior art, the invention has the object to enable a maintenance, repair or replacement of a force measuring device of a printing device in a simple and cost-saving manner.

Die Erfindung löst diese Aufgabe durch die Ansprüche 1 und 7. Vorteilhafte Ausgestaltungen finden sich in den abhängigen Ansprüchen, der Beschreibung und den Figuren.The invention achieves this object by the claims 1 and 7. Advantageous embodiments can be found in the dependent claims, the description and the figures.

Die Erfindung löst die Aufgabe zum einen durch eine Druckeinrichtung für eine Rundläuferpresse, wobei die Druckeinrichtung dazu ausgebildet ist, im Betrieb der Rundläuferpresse mit mindestens einem Pressstempel der Rundläuferpresse zusammenzuwirken, so dass der mindestens eine Pressstempel in einer Aufnahme befindliches Material verpresst, wobei die Druckeinrichtung eine Kraftmesseinrichtung zur Messung der von dem mindestens einen Pressstempel auf die Druckeinrichtung ausgeübten Kraft umfasst, wobei die Kraftmesseinrichtung ein Druckstück und einen Kraftsensor umfasst, die in einer Aufnahme der Druckeinrichtung angeordnet sind, und wobei zumindest ein Abschnitt der Druckeinrichtung zwischen einer geschlossenen Betriebsposition, in der das Druckstück und der Kraftsensor von außen nicht zugänglich sind, und einer geöffneten Wartungsposition bewegbar ist, wobei das Druckstück und/oder der Kraftsensor in der geöffneten Wartungsposition von außen zugänglich sind, so dass eine Entnahme des Druckstücks und/oder des Kraftsensors für eine Wartung, eine Reparatur oder einen Austausch möglich ist.The invention solves the problem on the one hand by a printing device for a rotary press, wherein the printing device is adapted to cooperate with at least one ram of the rotary press during operation of the rotary press, so that the at least one ram presses in a recording befindliches material, wherein the printing device a Force measuring device for measuring the force exerted by the at least one press ram force on the printing device, wherein the force measuring device comprises a pressure piece and a force sensor, which are arranged in a receptacle of the printing device, and wherein at least a portion of the printing device between a closed operating position, in which Pressure element and the force sensor from the outside are not accessible, and an open maintenance position is movable, wherein the pressure piece and / or the force sensor in the open maintenance position are accessible from the outside, so that a e Removal of the pressure piece and / or the force sensor for maintenance, repair or replacement is possible.

Bei der Rundläuferpresse kann es sich um eine Rundläufertablettenpresse handeln, wie sie an sich bekannt ist. Die erfindungsgemäße Druckeinrichtung kann insbesondere Teil einer Druckstation der Presse sein. Hierzu können mindestens eine obere Druckeinrichtung und mindestens eine untere Druckeinrichtung vorgesehen sein, die gemeinsam eine Vordruck- und/oder Hauptdruckstation der Presse bilden. Die Druckeinrichtung besitzt mindestens ein Druckelement, beispielsweise eine Druckrolle, die im Betrieb der Presse mit den Pressstempeln in Kontakt tritt und diese in Aufnahmen der Presse für das zu verpressende Material, beispielsweise Matrizenbohrungen, drückt. Das Material kann pulverförmig sein. Es wird in an sich bekannter Weise von den Pressstempeln zu einem Pressling, beispielsweise einer Tablette, verpresst. Die erfindungsgemäße Druckeinrichtung besitzt in ebenfalls an sich bekannter Weise eine Kraftmesseinrichtung. Mit ihr wird die im Betrieb zwischen der Druckeinrichtung, insbesondere einem Druckelement, wie einer Druckrolle, und dem bzw. den Pressstempeln wirkende Kraft gemessen. Daraus können Rückschlüsse auf die Qualität der hergestellten Presslinge getroffen werden.The rotary press may be a rotary tablet press, as known in the art. The printing device according to the invention may in particular be part of a printing station of the press. For this purpose, at least one upper printing device and at least one lower printing device can be provided, which together form a pre-printing and / or main printing station of the press. The printing device has at least one pressure element, for example a pressure roller, which comes into contact with the press dies during operation of the press and presses these in recordings of the press for the material to be pressed, for example die bores. The material can be powdery. It is pressed in a conventional manner from the press dies to a compact, for example a tablet. The printing device according to the invention also has a force measuring device in a manner known per se. With her is the in operation between the printing device, in particular a pressure element, such as a pressure roller, and the or the press dies measured acting force. From this it is possible to draw conclusions about the quality of the produced compacts.

Erfindungsgemäß besitzt die Druckeinrichtung einen Abschnitt, der aus einer geschlossenen Betriebsposition für den Betrieb der Presse in eine geöffnete Wartungsposition für eine Wartung oder dergleichen der Kraftmesseinrichtung bewegbar ist. In der geöffneten Wartungsposition ist die innerhalb der Druckeinrichtung angeordnete Kraftmesseinrichtung für eine Bedienperson zumindest teilweise, insbesondere vollständig, zugänglich. Es kann somit eine teilweise oder vollständige Entnahme der Kraftmesseinrichtung für eine Wartung, eine Reparatur oder einen Austausch gegen eine andere Kraftmesseinrichtung erfolgen. Eine Demontage der Druckeinrichtung, beispielsweise eines Druckelements, wie einer Druckrolle, ist nicht erforderlich. Vielmehr kann durch die Trennung der Druckeinrichtung im Bereich der Kraftmesseinrichtung diese in einfacher Weise zugänglich gemacht werden. Hierdurch werden eine Wartung, Reparatur oder Austausch der Kraftmesseinrichtung im Vergleich zum Stand der Technik sowohl in zeitlicher Hinsicht als auch hinsichtlich der von einer Bedienperson aufzubringenden Kraft erheblich vereinfacht.According to the invention, the printing device has a portion which is movable from a closed operating position for the operation of the press in an open maintenance position for maintenance or the like of the force measuring device. In the open maintenance position, the force measuring device arranged within the pressure device is at least partially accessible to an operator, in particular completely. It can thus be a partial or complete removal of the force measuring device for maintenance, repair or replacement with another force measuring device. Disassembly of the printing device, such as a printing element, such as a pressure roller, is not required. Rather, it can be made accessible in a simple manner by the separation of the printing device in the field of force measuring device. As a result, a maintenance, repair or replacement of the force measuring device compared to the prior art, both in terms of time and in terms of applied by an operator force is greatly simplified.

Es kann vorgesehen sein, dass der bewegbare Abschnitt bei seiner Bewegung zwischen der geöffneten und der geschlossenen Betriebsposition zu jeder Zeit mit dem fest angeordneten Abschnitt der Druckeinrichtung verbunden bleibt. Beispielsweise wenn der bewegbare Abschnitt kein Druckelement umfasst, insbesondere wenn der bewegbare Abschnitt keine Druckrolle umfasst, kann aber auch vorgesehen sein, dass der bewegbare Abschnitt in seiner geöffneten Wartungsposition von dem fest angeordneten Abschnitt losgelöst ist. Die Kraftmesseinrichtung umfasst ein sogenanntes Druckstück und einen Kraftsensor bzw. eine sogenannte Kraftmessdose , wobei das Druckstück im Betrieb den auftretenden Kräften bzw. Drücken ausgesetzt ist und diese auf den Kraftsensor überträgt. Es kann bei einer Wartung, Reparatur oder einem Austausch ausreichend sein, wenn nur das Druckstück entnommen wird. Ebenso kann es ausreichend sein, nur den Kraftsensor zu entnehmen. Es kann daher vorgesehen sein, dass nur der jeweils zu entnehmende Teil der Kraftmesseinrichtung in der geöffneten Wartungsposition von außen zugänglich ist. Selbstverständlich ist es auch denkbar, dass die gesamte Kraftmesseinrichtung entnommen wird. In diesem Fall ist in der geöffneten Wartungsposition des bewegbaren Abschnitts der Druckeinrichtung die gesamte Kraftmesseinrichtung von außen zugänglich.It can be provided that the movable portion remains connected during its movement between the open and the closed operating position at any time with the fixed portion of the printing device. For example, if the movable section does not comprise a pressure element, in particular if the movable section does not comprise a pressure roller, it may also be provided that the movable section is released from the fixed section in its open maintenance position. The force measuring device comprises a so-called pressure piece and a force sensor or a so-called load cell , The pressure piece in operation exposed to the forces or pressures is and transmits them to the force sensor. It may be sufficient for maintenance, repair or replacement if only the pressure piece is removed. It may also be sufficient to remove only the force sensor. It can therefore be provided that only the respectively to be removed part of the force measuring device in the open maintenance position is accessible from the outside. Of course, it is also conceivable that the entire force measuring device is removed. In this case, in the open maintenance position of the movable portion of the printing device, the entire force measuring device is accessible from the outside.

Die Kraftmesseinrichtung ist in der geschlossenen Betriebsposition des bewegbaren Abschnitts von außen im Wesentlichen nicht zugänglich. Weiterhin ist die Kraftmesseinrichtung in einer Aufnahme der Druckeinrichtung angeordnet. Mit diesen Ausgestaltungen wird die Kraftmesseinrichtung im Betrieb der Presse optimal geschützt.The force measuring device is not accessible in the closed operating position of the movable portion from the outside substantially. Furthermore, the force measuring device is arranged in a receptacle of the printing device. With these embodiments, the force measuring device is optimally protected during operation of the press.

Gemäß einer besonders praxisgemäßen Ausgestaltung kann der bewegbare Abschnitt der Druckeinrichtung zwischen der geschlossenen Betriebsposition und der geöffneten Wartungsposition verschwenkbar sein, insbesondere mittels eines Schwenklagers. Beispielsweise kann der bewegbare Abschnitt um eine vertikale oder um eine gegenüber einer Drehachse eines Rotors der Presse geneigte Schwenkachse verschwenkbar sein. Die Druckeinrichtung kann beispielsweise eine obere und eine untere Hälfte bzw. Gehäusehälfte, aufweisen, wobei die Kraftmesseinrichtung zwischen den beiden Hälften aufgenommen wird. Es kann dann die obere oder untere Hälfte der Druckeinrichtung aus der mit der unteren bzw. oberen Hälfte verbundenen geschlossenen Betriebsposition von der unteren bzw. oberen Hälfte der Druckeinrichtung weg in die geöffnete Wartungsposition geschwenkt werden. Der Begriff Verschwenken umfasst dabei auch ein Verdrehen des bewegbaren Abschnitts der Druckeinrichtung gegenüber dem übrigen, fest angeordneten Abschnitt der Druckeinrichtung um eine gemeinsame Zentralachse oder eine innen liegende Drehachse. Alternativ ist es auch denkbar, dass der bewegbare Abschnitt der Druckeinrichtung zwischen der geschlossenen Betriebsposition und der geöffneten Wartungsposition translatorisch verschiebbar ist.According to a particularly practical embodiment, the movable portion of the printing device between the closed operating position and the open maintenance position be pivotable, in particular by means of a pivot bearing. For example, the movable section may be pivotable about a pivot axis that is vertical or inclined about an axis of rotation of a rotor of the press. The pressure device can have, for example, an upper and a lower half or housing half, wherein the force measuring device is received between the two halves. It can then the upper or lower half of the printing device from the connected with the lower and upper half closed operating position of the lower or upper half of the printing device are pivoted away in the open maintenance position. The term pivoting also includes a twisting the movable portion of the printing device relative to the remaining, fixed portion of the printing device about a common central axis or an internal axis of rotation. Alternatively, it is also conceivable that the movable portion of the printing device between the closed operating position and the open maintenance position is translationally displaceable.

Nach einer weiteren Ausgestaltung kann die Druckeinrichtung eine Druckrolle umfassen, die im Betrieb der Presse mit dem mindestens einen Pressstempel zusammenwirkt, wobei die Druckrolle an dem bewegbaren Abschnitt der Druckeinrichtung gelagert ist. Das Druckelement der Druckeinrichtung, beispielsweise eine Druckrolle, kann beispielsweise an einer schwenkbaren oberen oder unteren Hälfte angeordnet sein. Gerade bei den üblicherweise sehr schweren Druckrollen bietet die Erfindung somit große Vorteile, da diese für einen Zugang zu der Kraftmesseinrichtung nicht demontiert werden müssen. Außerdem ist der Zugang zu der Kraftmesseinrichtung bei dieser Ausgestaltung besonders einfach möglich. Die Kraftmesseinrichtung kann beispielsweise in einem vertikal verlaufenden Druckrollenbolzen angeordnet sein, an dessen Außenseite die Druckrolle befestigt ist. Natürlich ist es auch möglich, dass die Druckrolle an dem nicht bewegbaren Abschnitt der Druckeinrichtung gelagert ist.According to a further embodiment, the printing device may comprise a pressure roller, which cooperates with the at least one press ram during operation of the press, wherein the pressure roller is mounted on the movable portion of the printing device. The pressure element of the printing device, for example a pressure roller, can be arranged, for example, on a pivotable upper or lower half. Especially with the usually very heavy pressure rollers, the invention thus offers great advantages, since they do not have to be dismantled for access to the force measuring device. In addition, the access to the force measuring device in this embodiment is particularly easy. The force measuring device may for example be arranged in a vertically extending pressure roller bolt, on the outside of the pressure roller is attached. Of course, it is also possible that the pressure roller is mounted on the non-movable portion of the printing device.

Die Erfindung betrifft außerdem eine Rundläuferpresse mit einem um eine vertikale Achse drehbaren Rotor, wobei der Rotor eine obere und eine untere Stempelführung für obere und untere Pressstempel und eine Matrizenscheibe zwischen den Stempelführungen aufweist, wobei die Pressstempel mit Aufnahmen der Matrizenscheibe zusammenwirken, ferner mit mindestens einer Füll- und Dosierstation, sowie wie mindestens einer oberen Druckeinrichtung und mindestens einer unteren Druckeinrichtung, die im Betrieb mit den oberen Pressstempeln zusammenwirken, wobei die obere Druckeinrichtung und/oder die untere Druckeinrichtung in der oben erläuterten erfindungsgemäßen Weise ausgebildet ist. Die Matrizenscheibe kann einstückig ausgebildet sein oder aus einzelnen Matrizensegmenten bestehen. Bei den Aufnahmen kann es sich um sogenannte Matrizenbohrungen handeln. In den Matrizenbohrungen können Matrizenhülsen angeordnet sein. Dies ist aber nicht zwingend erforderlich.The invention also relates to a rotary press having a rotor rotatable about a vertical axis, the rotor having upper and lower punch guides for upper and lower rams and a die plate between the ram guides, the rams cooperating with receptacles of the die plate, and at least one Filling and dosing station, as well as at least one upper pressure device and at least one lower pressure device, which cooperate in operation with the upper ram, wherein the upper pressure device and / or the lower pressure device is formed in the manner described above according to the invention. The die plate can be formed integrally or consist of individual die segments. The recordings can be so-called die holes. Matrizenhülsen may be arranged in the die holes. But this is not mandatory.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand von Figuren näher erläutert. Es zeigen schematisch:

Fig. 1
einen Teil einer Rundläuferpresse für Tabletten in einer in die Zeichnungsebene abgewickelten Darstellung,
Fig. 2
eine erfindungsgemäße Druckeinrichtung in einem ersten Betriebszustand in einer perspektivischen Ansicht.
An embodiment of the invention will be explained in more detail with reference to figures. They show schematically:
Fig. 1
a part of a rotary press for tablets in a developed in the drawing plane representation,
Fig. 2
a printing device according to the invention in a first operating state in a perspective view.

Fig. 1 zeigt den Aufbau einer an sich bekannten Rundläufertablettenpresse. Es ist insbesondere der Rotor der Rundläufertablettenpresse dargestellt, der von einem nicht dargestellten Drehantrieb um eine vertikale Achse rotiert wird, wie durch den Pfeil 12 veranschaulicht. Der Rotor besitzt eine obere Stempelführung 14 und eine untere Stempelführung 16 zur Aufnahme von Oberstempeln 18 und Unterstempeln 20 der Presse. Die Oberstempel 18 und Unterstempel 20 wirken mit Aufnahmen 22 einer Matrizenscheibe 24, vorliegend Matrizenbohrungen, zusammen, die zwischen den Stempelführungen 14, 16 angeordnet ist. Über eine Fülleinrichtung 26 wird den Aufnahmen 22 pulverförmiges Pressmaterial zugeführt. Die Fülleinrichtung 26 ist Teil einer Füll- und Dosierstation der Presse, die weiterhin Füllkurvenelemente 28 und Dosierkurvenelemente 30 umfasst. Der Rotor umfasst weiterhin untere Ausstoßkurvenelemente 32 und obere Aufzugskurvenelemente 33. Fig. 1 shows the structure of a known rotary tablet press. In particular, the rotor of the rotary tablet press is shown, which is rotated by a rotary drive, not shown, about a vertical axis, as illustrated by the arrow 12. The rotor has an upper punch guide 14 and a lower punch guide 16 for receiving upper punches 18 and lower punches 20 of the press. The upper punch 18 and lower punch 20 cooperate with receptacles 22 of a die plate 24, in this case die holes, which is arranged between the punch guides 14, 16. Via a filling device 26, the receptacles 22 are supplied with powdered pressing material. The filling device 26 is part of a filling and metering station of the press, which further comprises filling curve elements 28 and metering curve elements 30. The rotor further includes lower ejection cam members 32 and upper elevational cam members 33.

In Drehrichtung des Rotors der Fülleinrichtung 26 nachgeordnet befindet sich eine Vordruckstation 34 und eine Hauptdruckstation 36. Die Vordruckstation 34 besitzt eine obere Druckeinrichtung 38 mit einer oberen Druckrolle 40 und eine untere Druckeinrichtung 42 mit einer unteren Druckrolle 44. Die Hauptdruckstation 36 umfasst ebenfalls eine obere Druckeinrichtung 46 mit einer oberen Druckrolle 48 und eine untere Druckeinrichtung 50 mit einer unteren Druckrolle 52. Die Ober- und Unterstempel 18, 20 wirken mit den Druckrollen 40, 44, 48, 52 in an sich bekannter Weise zusammen, um das in die Aufnahmen 22 gefüllte Pressmaterial zu Tabletten zu verpressen. In Drehrichtung der Vor- und Hauptdruckstation 34, 36 nachgeordnet befindet sich ein Abstreifer 54, der zu diesem Zeitpunkt von den Unterstempeln 20 auf die Oberfläche der Matrizenscheibe 24 geschobene Tabletten in an sich bekannter Weise einem Tablettenablauf 56 zuführt.In the direction of rotation of the rotor downstream of the filling device 26 is a pre-printing station 34 and a main printing station 36. The pre-printing station 34 has an upper pressure device 38 with an upper pressure roller 40 and a lower pressure device 42 with a lower pressure roller 44. The main pressure station 36 also comprises an upper pressure device 46 with an upper pressure roller 48 and a lower pressure device 50 with a lower pressure roller 52. The upper and lower punches 18, 20 cooperate with the pressure rollers 40, 44, 48, 52 in a conventional manner to compress the filled into the receptacles 22 pressing material into tablets. In the direction of rotation of the pre-and main printing station 34, 36 downstream is a scraper 54 which at this time from the lower punches 20 on the surface of the die plate 24 pushed tablets in a conventional manner a tablet outlet 56 supplies.

Die unteren Druckeinrichtungen 42, 50 umfassen jeweils einen motorischen Antrieb 58, 60, mit dem der vertikale Abstand zwischen den oberen Druckrollen 40, 48 und den unteren Druckrollen 44, 52 variiert werden kann. Wie in Fig. 1 durch die mit F gekennzeichneten Pfeile veranschaulicht, wirken im Betrieb der Presse zwischen den Ober- bzw. Unterstempeln 18, 20 und den Druckrollen 40, 44, 48, 52 bzw. den diese tragenden Druckeinrichtungen 38, 42, 46, 50 Kräfte. Zur Messung dieser Kräfte sind in zumindest einigen, vorzugsweise sämtlichen Druckeinrichtungen 38, 42, 46, 50 Kraftmesseinrichtungen angeordnet.The lower pressure devices 42, 50 each include a motor drive 58, 60, with which the vertical distance between the upper pressure rollers 40, 48 and the lower pressure rollers 44, 52 can be varied. As in Fig. 1 illustrated by the arrows marked F, act in the operation of the press between the upper and lower punches 18, 20 and the pressure rollers 40, 44, 48, 52 and the pressure devices 38, 42, 46, 50 carrying these forces. For measuring these forces, force measuring devices are arranged in at least some, preferably all, pressure devices 38, 42, 46, 50.

Fig. 2 zeigt in einer perspektivischen Ansicht eine erfindungsgemäße Druckeinrichtung, die bei der in Fig. 1 gezeigten Rundläuferpresse vorgesehen sein kann. In dem gezeigten Beispiel ist eine untere Druckeinrichtung 62 dargestellt. Die in Fig. 2 gezeigte Druckeinrichtung 62 besitzt eine untere Hälfte 64 und eine obere Hälfte 66, die in dem gezeigten Beispiel die Druckrolle 68 trägt. Die Druckeinrichtung 62 stützt sich über einen an der unteren Hälfte 64 angeordneten Druckbolzen 70 im Betrieb an einem Gegenlager ab. Die untere Hälfte 64 der Druckeinrichtung 62 besitzt ein unteres Gehäuse 72 mit einer Aufnahme 74 für ein Druckstück 76 einer Kraftmesseinrichtung. Zu der Kraftmesseinrichtung gehört außerdem ein in Fig. 2 am Boden der Aufnahme 74 zu erkennender Kraftsensor 78. In der in Fig. 2 gezeigten Betriebsstellung ist das Druckstück 76 der Kraftmesseinrichtung zur Veranschaulichung aus der Aufnahme 74 entnommen. Fig. 2 shows in a perspective view of a printing device according to the invention, which in the in Fig. 1 shown rotary press can be provided. In the example shown, a lower pressure device 62 is shown. In the Fig. 2 shown printing device 62 has a lower half 64 and an upper half 66 which carries the pressure roller 68 in the example shown. The pressure device 62 is supported by a pressure pin 70 arranged on the lower half 64 in operation on an abutment. The lower half 64 of the printing device 62 has a lower housing 72 with a receptacle 74 for a pressure piece 76 of a force measuring device. The force measuring device also includes a in Fig. 2 at the bottom of the receptacle 74 to be detected force sensor 78. In the in Fig. 2 shown operating position, the pressure piece 76 of the force measuring device is taken for illustration from the receptacle 74.

Die obere Hälfte 66 der Druckeinrichtung 62 besitzt ein oberes Gehäuse 80, an welchem die Druckrolle 68 um eine horizontale Achse 82 drehbar gehalten ist. Über ein Schwenklager 84 ist das obere Gehäuse 80 der oberen Hälfte 66 um eine bei dem Bezugszeichen 86 angedeutete vertikale Schwenkachse schwenkbar mit einem Kopfteil 88 des unteren Gehäuses 72 der unteren Hälfte 64 verbunden. Auf diese Weise ist die obere Hälfte 66 zwischen der in Fig. 2 gezeigten geöffneten Wartungsposition, in der die Kraftmesseinrichtung, insbesondere das Druckstück 76 und der Kraftsensor 78, für eine Bedienperson von außen zugänglich sind, in eine geschlossene Betriebsposition verschwenkbar, in der die Kraftmesseinrichtung, insbesondere das Druckstück 76 und der Kraftsensor 78 von außen im Wesentlichen nicht zugänglich sind.The upper half 66 of the printing device 62 has an upper housing 80, on which the pressure roller 68 is rotatably supported about a horizontal axis 82. Via a pivot bearing 84, the upper housing 80 of the upper half 66 is pivotally connected to a head portion 88 of the lower housing 72 of the lower half 64 about a vertical pivot axis indicated at 86. In this way, the upper half 66 is between the in Fig. 2 shown opened maintenance position in which the force measuring device, in particular the pressure piece 76 and the force sensor 78 are accessible to an operator from the outside, pivotable in a closed operating position, in which the force measuring device, in particular the pressure piece 76 and the force sensor 78 from the outside substantially not are accessible.

Durch die Ausgestaltung der erfindungsgemäßen Druckeinrichtung 62 ist ein Zugang zu der Kraftmesseinrichtung für eine Wartung, Reparatur oder einen Austausch in einfacher Weise möglich, ohne die Druckeinrichtung 62, und insbesondere ihre Druckrolle 68 teilweise oder vollständig demontieren zu müssen. Die beiden Hälften 64, 66 der Druckeinrichtung 62 bleiben jederzeit über die Schwenklagerung 84 miteinander verbunden.Due to the configuration of the printing device 62 according to the invention access to the force measuring device for maintenance, repair or replacement in a simple manner possible without the printing device 62, and in particular their pressure roller 68 must be partially or completely disassembled. The two halves 64, 66 of the printing device 62 remain connected to each other via the pivot bearing 84.

Claims (7)

  1. A pressing apparatus for a rotary press, wherein the pressing apparatus (38, 42, 46 50, 62) is designed to interact with at least one press punch (18, 20) of the rotary press during the operation of the rotary press such that the at least one press punch (18, 20) is moulding a material located in a recess (22), wherein the pressing apparatus (38, 42, 46 50, 62) comprises a force measuring apparatus (76, 78) for measuring the force exerted by the at least one press punch (18, 20) on the pressing apparatus (38, 42, 46 50), characterized in that the force measuring apparatus (76, 78) comprises a pressure piece (76) and a force sensor (78) that are arranged in a recess (74) in the pressing apparatus (38, 42, 46 50, 62), and at least one section (66) of the pressing apparatus (38, 42, 46 50, 62) can be moved between a closed operating position in which the pressure piece (76) and force sensor (78) are not accessible from the outside, and an open maintenance position, wherein the pressure piece (76) and/or the force sensor (78) are accessible from the outside in the open maintenance position such that removal of the pressure piece (76) and/or the force sensor (78) for maintenance, repair or exchange is possible.
  2. The pressing apparatus according to claim 1, characterized in that the movable section (66) of the pressing apparatus (38, 42, 46 50, 62) is pivotable between the closed operating position and the opened maintenance position.
  3. The pressing apparatus according to claim 2, characterized in that the movable section (66) is pivotable around a vertical pivot axis (86) or around a pivot axis tilted with respect to a rotational axis of a rotor of the rotary press.
  4. The pressing apparatus according to claim 1, characterized in that the movable section of the pressing apparatus is shiftable in a translatory manner between the closed operating position and the opened maintenance position.
  5. The pressing apparatus according to one of the previous claims, characterized in that it comprises a pressing roller (40, 44, 48, 52, 68), which works together with the at least one press punch (18, 20) during operation of the rotary press, wherein the pressing roller (40, 44, 48, 52, 68) is mounted on the movable section (66) of the pressing apparatus (38, 42, 46 50, 62).
  6. The pressing apparatus according to one of claims 1 through 4, characterized in that it comprises a pressing roller (40, 44, 48, 52, 68), which works together with the at least one press punch (18, 20) during operation of the rotary press, wherein the pressing roller (40, 44, 48, 52, 68) is mounted on the non-movable section of the pressing apparatus (38, 42, 46 50, 62).
  7. A rotary press with a rotor rotatable around a vertical axis, wherein the rotor has an upper and a lower punch guide (14, 16) for upper and lower press punches (18, 20) and a die disc (24) between the punch guides (14, 16), wherein the press punches (18, 20) work together with receivers (22) of the die disc (24), furthermore with at least one filling and dosing station as well as with at least one upper pressing apparatus (38, 46) and at least one lower pressing apparatus (42, 50, 62), which work together with the upper press punches (18) and with the lower press punches (20) during operation, wherein the upper pressing apparatus (38, 46) and/or the lower pressing apparatus (42, 50, 62) is configured according to one of the previous claims.
EP12719262.3A 2011-05-10 2012-04-19 Pressing assembly for a press, and rotary printing press Active EP2707209B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011101291.9A DE102011101291B4 (en) 2011-05-10 2011-05-10 Printing device for a press and rotary press
PCT/EP2012/001690 WO2012152374A1 (en) 2011-05-10 2012-04-19 Printing assembly for a press, and rotary printing press

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EP2707209A1 EP2707209A1 (en) 2014-03-19
EP2707209B1 true EP2707209B1 (en) 2016-12-07

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US (1) US9216553B2 (en)
EP (1) EP2707209B1 (en)
JP (1) JP5933693B2 (en)
CN (1) CN103648757B (en)
DE (1) DE102011101291B4 (en)
WO (1) WO2012152374A1 (en)

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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
CN114641390A (en) * 2019-10-30 2022-06-17 科施股份公司 Squeeze roller table for rotary tablet presses with external shaft seats for the squeeze roller units

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JP5933693B2 (en) 2016-06-15
US9216553B2 (en) 2015-12-22
JP2014512969A (en) 2014-05-29
EP2707209A1 (en) 2014-03-19
CN103648757B (en) 2016-03-16
DE102011101291A1 (en) 2012-11-15
US20140178516A1 (en) 2014-06-26
WO2012152374A1 (en) 2012-11-15
CN103648757A (en) 2014-03-19
DE102011101291B4 (en) 2014-01-23

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