EP2036709A2 - Rotary tablet compactor - Google Patents
Rotary tablet compactor Download PDFInfo
- Publication number
- EP2036709A2 EP2036709A2 EP08015920A EP08015920A EP2036709A2 EP 2036709 A2 EP2036709 A2 EP 2036709A2 EP 08015920 A EP08015920 A EP 08015920A EP 08015920 A EP08015920 A EP 08015920A EP 2036709 A2 EP2036709 A2 EP 2036709A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing
- tablet press
- housing
- press according
- ring
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
- B30B11/08—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds carried by a turntable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0082—Dust eliminating means; Mould or press ram cleaning means
Definitions
- the invention relates to a rotary tablet press according to the preamble of patent claim 1.
- Rotary tablet presses typically include a rotor containing a die plate with individual die bores and upper and lower punch guides. In the punch guide upper and lower punches are performed, which interact with the die holes.
- guide curves for the stamp are arranged above and below the rotor.
- at least one printing station is associated with the circumference of the die plate, which press with at least one upper and lower pressure roller, the stamp against each other for the purpose of pressing the powdery material in the die holes.
- a rotary tablet press also includes a filling device which fills the passing stencil bores with powder material. The compressed tablets are then moved out of the die bores with the help of the lower punches and removed by a stripper.
- the rotor is driven by a suitable drive device, usually an electric motor.
- a surrounding the described parts housing forms a baling chamber, which prevents the formation of dust generated during pressing in the environment. Conversely, the housing also prevents the ingress of dirt into the baling chamber.
- EP 0 288 798 become known to connect the holder of the stamp controlling curves via detachable connection means with stationary housing parts and to connect by drivers with the die plate such that after loosening the connecting means the die plate are lifted together with upper and lower punches and the curves of the drive shaft can.
- the rotor can be completely removed from the rotary tabletting machine, so that cleaning is done outside. Also can be made in this way a conversion of the machine, for example, to another stamp division or only other stamp.
- the expandability of a rotor is also in EP 1 050 399 A2 treated.
- the invention has for its object to provide a rotary tablet press, in which an effective low-wear and low-friction sealing of an enclosure of the rotor is achieved.
- the annular support for the seal assembly by means of a stationary lifting device between a first and a second position is axially movable.
- the seal assembly includes a first seal portion which in the first and second positions is constantly engaged with a first sealing surface of the housing.
- a second sealing portion is in the first position with a second sealing surface of the punch guide with a first sealing force in engagement. In the second position it is either with a second sealing force, which is smaller than the first sealing force with the second sealing surface in engagement or with this disengaged.
- the first position corresponds to the state of the rotary tablet press at standstill.
- the seal arrangement seals the housing completely to the outside. As a result, a cleaning can be carried out even with a built-in rotor, thereby preventing that cleaning agents including impurities escape to the outside.
- the sealing arrangement is only in firm engagement with the housing, while opposite the punch guide either a minimum gap is set or a weak plant. As a result, a sufficient seal is still obtained during operation, which prevents the escape of dust, in particular, if, according to one embodiment of the invention, the housing is connected in operation with a vacuum source.
- the lifting device can act pneumatically, electromotively, electromagnetically, hydraulically or the like.
- the control of Lifting device may be connected to the controller for the rotary tablet press, whereby automatically both stopper sections are sealingly engaged at standstill, while in operation of a sealing engagement is weakened or completely eliminated.
- Another advantage of the invention is that the existing seals are largely free of wear and develop no unnecessary heat.
- An expansion of the rotor for cleaning purposes or to change the stamp is not required. It can thus be used a solid housing.
- the enclosure minimizes the process space, which in turn reduces the cleaning effort. Parts outside the process chamber remain clean and can also be made of non-corrosion resistant materials.
- both sealing portions are formed by a sealing ring.
- the sealing ring can be made in one piece from the same elastomeric material. However, it may also be made of sealing portions of different sealing material, wherein at least two layers are firmly joined together, either by gluing or by adhesion during the manufacturing process.
- a radially arranged within the sealing ring retaining ring is provided, and the sealing ring has a groove or an annular rib on the circumference and the retaining ring has a rib or a groove, which are non-positively and / or positively engageable , During the movement of the retaining ring this automatically takes with the seal.
- the sealing ring may be arranged or formed so that it brings in the first position of the lifting device by biasing both sealing portions with the housing or the punch guide into engagement. When adjusting in the second position of the cooperating with the housing seal portion is then further deformed until with the punch guide engaged sealing portion reduces or eliminates the engagement.
- the sealing portions may be formed by sealing lips.
- a particularly advantageous embodiment of the invention is that the lifting device is formed by an inflatable seal which is arranged on the housing and on which a cam ring is applied, which is connected to the annular holder.
- the cam ring may be connected to the bracket via a plurality of circumferentially spaced bolts. It is particularly advantageous if, according to a further embodiment of the invention, a channel connected to a stationary compressed air source opens close to the point of engagement of the second sealing section with the second sealing surface outside the pressing chamber.
- the cam ring may according to a further embodiment of the invention comprise a connected to the pressure source annular channel which is connected to axial bores in the retaining bolts, and the axial bores may be connected to axially parallel bores in the retaining ring, which open close to the second sealing surface.
- Fig. 1 shows a rotor 10 of a rotary tablet press, not shown, as known from the basic structure.
- the rotor has an upper punch guide 12 and a lower punch guide 14 for upper punch 16 or lower punch 18. In Fig. 1 In any case, only one stamp pair is shown.
- the rotor also has a die plate 20, which may for example be composed of several segments, as is known per se.
- the die plate 20 has die holes 22 with which the upper and lower punches 16, 18 cooperate.
- a housing 24 surrounds the rotor 10 over its entire circumference. Its upper wall 24a is at the same height as the upper side of the upper punch guide 12. Its lower wall 24b has a minimum distance from the underside of the lower punch guide 14.
- the housing 24 is held stationary within the tablet press (not shown).
- an upper seal assembly 26 and a lower seal assembly 28 are shown. They seal the housing 24 relative to the rotor 10 and thus to the outside, so that the process space 30, which is formed between the rotor 10 and the housing 24, is closed to the environment. Developing dust during the process is not carried to the outside.
- the seal assembly 26 includes a one-piece sealing ring having an upper lip 34 and a lower lip 36.
- the upper lip 34 abuts against an associated sealing surface of the housing 24.
- the lower sealing lip 36 abuts against a sealing surface 38 of a portion of the upper punch guide 12.
- the sealing ring 32 on the side facing the punch guides on a rectangular cross-section groove 40 into which engages a complementary annular rib 42 of a retaining ring 44 for the sealing ring 32.
- the retaining ring 44 is connected via a bolt 46 with a lifting device 48 on the housing 24.
- the sealing ring 32 can be brought into two positions by means of the lifting device 48.
- Fig. 2 shows a first position in which both sealing lips are under internal stress with the associated sealing surfaces in engagement. The process space 30 is thus completely sealed from the environment.
- the retaining ring 44 is slightly raised.
- the sealing lip 34 is therefore deformed a little further, and the sealing lip 36 is minimally lifted from the associated sealing surface 32 a. It forms a minimum gap 50.
- a negative pressure is permanently generated in the process chamber 30, which additionally prevents dust arising in the process chamber 30 from escaping to the outside.
- a rotor 10a is shown which is driven by an electric drive motor 52 integrated into the interior of the rotor 10a.
- the engine is not shown in detail.
- the outer rotor is rotatably coupled to the rotor 14, while the motor stator is connected to a cylindrical bearing portion 54 which stands on a column 56.
- the arrangement of cooling grooves is shown, which serve to cool the motor 52.
- the housing 24 of the embodiment according to Fig. 4 should not be described in detail. It should be noted that side wall sections 60, which are connected at the top to a ceiling section 62, can be raised to gain access to the press room 30. The lifting device for this is not shown.
- the seal assembly 64 has a sealing ring, which the sealing ring after the FIGS. 1 to 3 like. He is therefore again designated 32.
- a retaining ring 66 cooperates in the same way with the sealing ring 32, as in connection with the FIGS. 1 to 3 has been described.
- the retaining ring has an axial through hole 68, which opens into a circumferential annular space 70, which is bounded by the sealing lip 36, the sealing surface 32 a, the retaining ring 66 and another portion of the punch guide 12.
- a bolt 72 is screwed into the retaining ring, which also has an axial bore 74 which is aligned with the axial bore 68.
- the bolt 74 extends through a bore of a cam ring 76 which extends above the upper ceiling portion of the housing 24.
- the cam ring 76 has an annular chamber 78 which extends annularly in the ring 76.
- a transverse bore 80 at the upper end of the axial bore 74 communicates with the annulus 78.
- the annulus is in turn connected to a pressure source, not shown here.
- a nut 82 is screwed with a sealing ring.
- an inflatable seal 84 is sunk in a groove which communicates with a pressure source. It may be the same pressure source connected to annulus 78.
- the inflatable seal 84 bears against the lifting ring 76 from below. If compressed air is introduced into the seal 84, the lifting ring is thereby raised slightly, which likewise raises the retaining ring 66 via the pins 72 in order to adjust the sealing ring 32 to a second position, such as in FIG Fig. 3 has been described, namely to form a minimum gap with respect to the sealing surface 32a.
- a valve is arranged between the seal 84 and the compressed air source, the actuation of which is controlled by the control device of the tablet press. This also applies to the supply of compressed air as sealing air into the annular space 70 (FIG. Fig. 5 ).
- the seal 32 has the in Fig. 2 shown position and thus seals the baling chamber 30 completely from the environment. As a result, no cleaning liquid penetrates to the outside when the pressed parts are washed with a suitable cleaning agent.
- the retaining ring 44 or 66 is inserted in the in FIGS. 1 and 2 by means of the lifting device 48 or the inflatable seal 84 Fig. 3 shown raised position so that a substantial friction of the sealing lip 36 does not occur on the sealing surface 32a.
- a negative pressure is generated, which prevents over the possibly minimal gap between the sealing lip 36 and the sealing surface 32a dust penetrates to the outside. This is supported by the fact that compressed air is blown into the circulating annular space 70 via the axial bores 74, 68, which enters the baling chamber 30 via the minimum gap and thus generates a blocking effect.
Abstract
Description
Die Erfindung bezieht auf eine Rundlauf-Tablettenpresse nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a rotary tablet press according to the preamble of patent claim 1.
Rundlauf-Tablettenpressen weisen üblicherweise einen Rotor auf, der eine Matrizenscheibe mit einzelnen Matrizenbohrungen enthält und eine obere und eine untere Stempelführung. In der Stempelführung sind Ober- und Unterstempel geführt, die mit den Matrizenbohrungen zusammenwirken. Außerdem sind oberhalb und unterhalb des Rotors Führungskurven für die Stempel angeordnet. Ferner ist dem Umfang der Matrizenscheibe mindestens eine Druckstation zugeordnet, die mit mindestens einer oberen und unteren Druckrolle, die Stempel gegeneinander pressen zwecks Verpressung des pulverförmigen Materials in den Matrizenbohrungen. Schließlich gehört zu einer Rundlauf-Tablettenpresse auch eine Füllvorrichtung, welche die vorbeilaufenden Matrizenbohrungen mit Pulvermaterial befüllt. Die verpreßten Tabletten werden anschließend mit Hilfe der Unterstempel aus den Matrizenbohrungen heraus bewegt und durch eine Abstreifvorrichtung entfernt. Der Rotor wird von einer geeigneten Antriebsvorrichtung, zumeist ein Elektromotor, angetrieben. Ein die beschriebenen Teile umgebendes Gehäuse bildet einen Preßraum, der verhindert, daß beim Pressen entstehender Staub in die Umgebung gelangt. Umgekehrt verhindert das Gehäuse auch das Eindringen von Verschmutzungen in den Preßraum.Rotary tablet presses typically include a rotor containing a die plate with individual die bores and upper and lower punch guides. In the punch guide upper and lower punches are performed, which interact with the die holes. In addition, guide curves for the stamp are arranged above and below the rotor. Furthermore, at least one printing station is associated with the circumference of the die plate, which press with at least one upper and lower pressure roller, the stamp against each other for the purpose of pressing the powdery material in the die holes. Finally, a rotary tablet press also includes a filling device which fills the passing stencil bores with powder material. The compressed tablets are then moved out of the die bores with the help of the lower punches and removed by a stripper. The rotor is driven by a suitable drive device, usually an electric motor. A surrounding the described parts housing forms a baling chamber, which prevents the formation of dust generated during pressing in the environment. Conversely, the housing also prevents the ingress of dirt into the baling chamber.
Aus
Die im Preßraum befindlichen Teile müssen von Zeit zu Zeit gereinigt werden. Es ist daher aus
Aus
Um einen möglichst guten Abschluß zwischen dem Gehäuse und der Umgebung herbeizuführen, sieht die bereits genannte
Der Erfindung liegt die Aufgabe zugrunde, eine Rundlauf-Tablettenpresse zu schaffen, bei der eine wirksame verschleißarme und reibungsarme Abdichtung einer Einhausung des Rotors erzielt wird.The invention has for its object to provide a rotary tablet press, in which an effective low-wear and low-friction sealing of an enclosure of the rotor is achieved.
Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.This object is solved by the features of patent claim 1.
Bei der Erfindung ist die ringförmige Halterung für die Dichtungsanordnung mittels einer stationär angeordneten Hubvorrichtung zwischen einer ersten und einer zweiten Stellung axial bewegbar. Die Dichtungsanordnung weist einen ersten Dichtungsabschnitt auf, der in der ersten und zweiten Stellung ständig mit einer ersten Dichtfläche des Gehäuses in Eingriff ist. Ein zweiter Dichtabschnitt ist in der ersten Stellung mit einer zweiten Dichtfläche der Stempelführung mit einer ersten Dichtkraft in Eingriff. In der zweiten Stellung ist er entweder mit einer zweiten Dichtkraft, die kleiner ist als die erste Dichtkraft mit der zweiten Dichtfläche in Eingriff oder mit dieser außer Eingriff.In the invention, the annular support for the seal assembly by means of a stationary lifting device between a first and a second position is axially movable. The seal assembly includes a first seal portion which in the first and second positions is constantly engaged with a first sealing surface of the housing. A second sealing portion is in the first position with a second sealing surface of the punch guide with a first sealing force in engagement. In the second position it is either with a second sealing force, which is smaller than the first sealing force with the second sealing surface in engagement or with this disengaged.
Die erste Stellung entspricht dem Zustand der Rundlauf-Tablettenpresse im Stillstand. Die Dichtungsanordnung dichtet das Gehäuse komplett nach außen ab. Dadurch kann eine Reinigung auch bei eingebautem Rotor vorgenommen werden, wobei verhindert wird, daß Reinigungsmittel einschließlich Verunreinigungen nach außen gelangen. In der zweiten Stellung der Hubvorrichtung ist die Dichtungsanordnung nur in festem Eingriff mit dem Gehäuse, während gegenüber der Stempelführung entweder ein minimaler Spalt eingestellt wird oder eine schwache Anlage. Dadurch wird nach wie vor im Betrieb eine ausreichende Abdichtung erhalten, die ein Austreten von Staub verhindert, insbesondere, wenn nach einer Ausgestaltung der Erfindung das Gehäuse im Betrieb mit einer Unterdruckquelle verbunden ist. Die Hubvorrichtung kann pneumatisch, elektromotorisch, elektromagnetisch, hydraulisch oder dergleichen wirken. Die Steuerung der Hubvorrichtung kann an die Steuerung für die Rundlauf-Tablettenpresse angeschlossen sein, wodurch im Stillstand automatisch beide Dichtabschnitte in dichtenden Eingriff gefahren werden, während im Betrieb der eine Dichteingriff abgeschwächt oder vollständig aufgehoben wird.The first position corresponds to the state of the rotary tablet press at standstill. The seal arrangement seals the housing completely to the outside. As a result, a cleaning can be carried out even with a built-in rotor, thereby preventing that cleaning agents including impurities escape to the outside. In the second position of the lifting device, the sealing arrangement is only in firm engagement with the housing, while opposite the punch guide either a minimum gap is set or a weak plant. As a result, a sufficient seal is still obtained during operation, which prevents the escape of dust, in particular, if, according to one embodiment of the invention, the housing is connected in operation with a vacuum source. The lifting device can act pneumatically, electromotively, electromagnetically, hydraulically or the like. The control of Lifting device may be connected to the controller for the rotary tablet press, whereby automatically both stopper sections are sealingly engaged at standstill, while in operation of a sealing engagement is weakened or completely eliminated.
Ein weiterer Vorteil der Erfindung besteht darin, daß die vorhandenen Dichtungen weitgehend verschleißfrei sind und keine unnötige Wärme entwickeln.Another advantage of the invention is that the existing seals are largely free of wear and develop no unnecessary heat.
Ein Ausbau des Rotors zu Reinigungszwecken oder zum Wechseln der Stempel ist nicht erforderlich. Es kann somit eine feste Einhausung verwendet werden. Die Einhausung minimiert den Prozeßraum, was wiederum den Reinigungsaufwand reduziert. Teile außerhalb des Prozeßraums bleiben sauber und können auch aus nicht korrosionsbeständigen Materialien gefertigt werden.An expansion of the rotor for cleaning purposes or to change the stamp is not required. It can thus be used a solid housing. The enclosure minimizes the process space, which in turn reduces the cleaning effort. Parts outside the process chamber remain clean and can also be made of non-corrosion resistant materials.
Vorteilhafte weitere Ausgestaltungen sind in weiteren Unteransprüchen angegeben.Advantageous further embodiments are specified in further subclaims.
Nach einer Ausgestaltung der Erfindung sind beide Dichtungsabschnitte von einem Dichtring gebildet. Der Dichtring kann einteilig aus gleichem elastomerem Material bestehen. Er kann jedoch auch aus Dichtabschnitten unterschiedlichen Dichtungsmaterial hergestellt sein, wobei mindestens zwei Schichten fest miteinander verbunden sind, entweder durch Verklebung oder durch Anhaftung während des Herstellungsprozesses.According to one embodiment of the invention, both sealing portions are formed by a sealing ring. The sealing ring can be made in one piece from the same elastomeric material. However, it may also be made of sealing portions of different sealing material, wherein at least two layers are firmly joined together, either by gluing or by adhesion during the manufacturing process.
Nach einer weiteren Ausgestaltung der Erfindung ist ein radial innerhalb des Dichtrings angeordneter Haltering vorgesehen, und der Dichtring weist eine Nut oder eine Ringrippe am Umfang auf und der Haltering weist eine Rippe oder eine Nut auf, die kraft- und/oder formschlüssig in Eingriff bringbar sind. Bei der Bewegung des Halterings nimmt dieser den Dichtring automatisch mit. Der Dichtring kann so angeordnet bzw. ausgebildet sein, daß er in der ersten Stellung der Hubvorrichtung durch Vorspannung beide Dichtungsabschnitte mit dem Gehäuse bzw. der Stempelführung in Eingriff bringt. Bei der Verstellung in die zweite Stellung wird dann der mit dem Gehäuse zusammenwirkende Dichtungsabschnitt weiter verformt, bis der mit der Stempelführung in Eingriff befindliche Dichtabschnitt den Eingriff reduziert bzw. aufhebt. Die Dichtungsabschnitte können von Dichtlippen gebildet sein.According to a further embodiment of the invention, a radially arranged within the sealing ring retaining ring is provided, and the sealing ring has a groove or an annular rib on the circumference and the retaining ring has a rib or a groove, which are non-positively and / or positively engageable , During the movement of the retaining ring this automatically takes with the seal. The sealing ring may be arranged or formed so that it brings in the first position of the lifting device by biasing both sealing portions with the housing or the punch guide into engagement. When adjusting in the second position of the cooperating with the housing seal portion is then further deformed until with the punch guide engaged sealing portion reduces or eliminates the engagement. The sealing portions may be formed by sealing lips.
Eine besonders vorteilhafte Ausgestaltung der Erfindung besteht darin, daß die Hubvorrichtung von einer aufblasbaren Dichtung gebildet ist, die am Gehäuse angeordnet ist und an der ein Hubring anliegt, der mit der ringförmigen Halterung verbunden ist. Der Hubring kann mit der Halterung über mehrere in Umfangsabstand beabstandete Bolzen verbunden sein. Besonders vorteilhaft ist, wenn nach einer weiteren Ausgestaltung der Erfindung ein mit einer stationären Druckluftquelle verbundener Kanal nahe dem Eingriffsort des zweiten Dichtungsabschnitts mit der zweiten Dichtfläche außerhalb des Preßraums mündet.A particularly advantageous embodiment of the invention is that the lifting device is formed by an inflatable seal which is arranged on the housing and on which a cam ring is applied, which is connected to the annular holder. The cam ring may be connected to the bracket via a plurality of circumferentially spaced bolts. It is particularly advantageous if, according to a further embodiment of the invention, a channel connected to a stationary compressed air source opens close to the point of engagement of the second sealing section with the second sealing surface outside the pressing chamber.
Der Hubring kann nach einer weiteren Ausgestaltung der Erfindung einen mit der Druckquelle verbundenen Ringkanal aufweisen, der mit axialen Bohrungen in den Haltebolzen verbunden ist, und die axialen Bohrungen können mit achsparallelen Bohrungen im Haltering verbunden sein, die nahe der zweiten Dichtungsfläche münden.The cam ring may according to a further embodiment of the invention comprise a connected to the pressure source annular channel which is connected to axial bores in the retaining bolts, and the axial bores may be connected to axially parallel bores in the retaining ring, which open close to the second sealing surface.
Es ist vorteilhaft, wenn eine derartige Dichtungsanordnung sowohl der oberen als auch der unteren Stempelführung des Rotors zugeordnet ist.It is advantageous if such a sealing arrangement is associated with both the upper and the lower punch guide of the rotor.
Die Erfindung wird nachfolgend anhand von Zeichnungen näher erläutert, die beispielhaft eine Ausführungsform der Erfindung wiedergeben.
- Fig. 1
- zeigt einen Schnitt durch einen Teil eines Rotors für eine Rundlauf-Tablettenpresse mit Dichtungsanordnungen nach der Erfindung.
- Fig. 2
- zeigt die obere Dichtungsanordnung nach
Fig. 1 in einer ersten Stellung. - Fig. 3
- zeigt die Dichtungsanordnung nach
Fig. 2 in einer zweiten Stellung. - Fig. 4
- zeigt einen Teilschnitt eines Rotors einer Rundlauf-Tablettenpresse mit gegenüber
Fig. 1 weiteren Einzelheiten. - Fig. 5
- zeigt die obere Dichtungsanordnung nach
Fig. 4 in vergrößerter Darstellung.
- Fig. 1
- shows a section through a portion of a rotor for a rotary tablet press with sealing arrangements according to the invention.
- Fig. 2
- shows the upper seal assembly after
Fig. 1 in a first position. - Fig. 3
- shows the seal assembly after
Fig. 2 in a second position. - Fig. 4
- shows a partial section of a rotor of a rotary tablet press with opposite
Fig. 1 further details. - Fig. 5
- shows the upper seal assembly after
Fig. 4 in an enlarged view.
Ein Gehäuse 24 umgibt den Rotor 10 über seinen gesamten Umfang. Seine obere Wandung 24a liegt auf gleicher Höhe wie die Oberseite der Oberstempelführung 12. Seine untere Wandung 24b hat einen minimalen Abstand von der Unterseite der Unterstempelführung 14. Das Gehäuse 24 ist im Rahmen der Tablettenpresse (nicht gezeigt) stationär gehalten. Innerhalb des Gehäuses 24 sind eine obere Dichtungsanordnung 26 und eine untere Dichtungsanordnung 28 gezeigt. Sie dichten das Gehäuse 24 gegenüber dem Rotor 10 und somit nach außen ab, so daß der Prozeßraum 30, der zwischen Rotor 10 und Gehäuse 24 gebildet ist, gegenüber der Umgebung abgeschlossen ist. Während des Prozeßes sich entwickelnder Staub wird nicht nach außen getragen.A
Nachfolgend wird nur die obere Dichtungsanordnung 26 behandelt, wobei jedoch die Dichtungsanordnung 28 vollständig gleich aufgebaut ist.Subsequently, only the
Die Dichtungsanordnung 26 weist einen einteiligen Dichtring auf mit einer oberen Lippe 34 und einer unteren Lippe 36. Die obere Lippe 34 legt sich gegen eine zugeordnete Dichtfläche des Gehäuses 24 an. Die untere Dichtlippe 36 liegt gegen eine Dichtfläche 38 eines Abschnitts der oberen Stempelführung 12 an.The
Wie insbesondere in den
Soweit bei der Ausführungsform nach
In
Das Gehäuse 24 der Ausführungsform nach
Die Abdichtung des Prozeßraums 30 erfolgt mit Hilfe von Dichtanordnungen 64, 66, von denen die erstere anhand von
Die Dichtungsanordnung 64 weist einen Dichtring auf, der dem Dichtring nach den
Im Deckenabschnitt des Gehäuses 24 ist eine aufblasbare Dichtung 84 in einer Nut versenkt angeordnet, die mit einer Druckquelle in Verbindung steht. Es kann die gleiche Druckquelle sein, die mit dem Ringraum 78 verbunden ist. Die aufblasbare Dichtung 84 liegt von unten gegen den Hubring 76 an. Wird Druckluft in die Dichtung 84 eingeleitet, wird dadurch der Hubring etwas angehoben, der über die Stifte 72 den Haltering 66 ebenfalls anhebt zur Verstellung des Dichtrings 32 in eine zweite Stellung, wie die in
Während des Stillstands des Rotors 10 bzw. 10a hat die Dichtung 32 die in
Claims (13)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007043583A DE102007043583B3 (en) | 2007-09-13 | 2007-09-13 | Rotary tablet press |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2036709A2 true EP2036709A2 (en) | 2009-03-18 |
EP2036709A3 EP2036709A3 (en) | 2012-06-27 |
EP2036709B1 EP2036709B1 (en) | 2013-01-09 |
Family
ID=39885144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08015920A Not-in-force EP2036709B1 (en) | 2007-09-13 | 2008-09-10 | Rotary tablet compactor |
Country Status (3)
Country | Link |
---|---|
US (1) | US7637728B2 (en) |
EP (1) | EP2036709B1 (en) |
DE (1) | DE102007043583B3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7967592B2 (en) * | 2006-05-11 | 2011-06-28 | Ima Kilian Gmbh & Co. Kg | Rotary tablet press with washing device and rotor for it |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4259049A (en) | 1979-04-07 | 1981-03-31 | Wilhelm Fette Gmbh | Tabletting machine |
EP0288798A2 (en) | 1987-04-27 | 1988-11-02 | Wilhelm Fette GmbH | Rotary tabletting machine |
EP1050399A2 (en) | 1999-05-04 | 2000-11-08 | Wilhelm Fette GmbH | Rotary tabletting press |
US6676836B2 (en) | 1998-03-04 | 2004-01-13 | Mikkel G. Mandt | Surge anoxic mix sequencing batch reactor systems |
US6676863B2 (en) | 2001-09-05 | 2004-01-13 | Courtoy Nv | Rotary tablet press and a method of using and cleaning the press |
DE102004040163B3 (en) | 2004-08-19 | 2006-05-04 | Fette Gmbh | Rotary tablet press |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9103247U1 (en) * | 1991-03-16 | 1991-06-13 | Wilhelm Fette Gmbh, 2053 Schwarzenbek, De | |
GB9205659D0 (en) * | 1992-03-14 | 1992-04-29 | Mccoy Ronald G | Shaft seal |
IT1264747B1 (en) * | 1993-12-10 | 1996-10-04 | Ima Spa | ROTARY COMPRESSING MACHINE |
IT1264287B1 (en) * | 1993-12-10 | 1996-09-23 | Ima Spa | METHOD FOR COMPRESSION OF POWDERED OR GRANULAR MATERIAL. |
ITBO20010141A1 (en) * | 2001-03-16 | 2002-09-16 | Ima Spa | COMPRESSING MACHINE FOR THE PRODUCTION OF TABLETS |
-
2007
- 2007-09-13 DE DE102007043583A patent/DE102007043583B3/en not_active Expired - Fee Related
-
2008
- 2008-09-10 EP EP08015920A patent/EP2036709B1/en not_active Not-in-force
- 2008-09-12 US US12/209,823 patent/US7637728B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4259049A (en) | 1979-04-07 | 1981-03-31 | Wilhelm Fette Gmbh | Tabletting machine |
EP0288798A2 (en) | 1987-04-27 | 1988-11-02 | Wilhelm Fette GmbH | Rotary tabletting machine |
US6676836B2 (en) | 1998-03-04 | 2004-01-13 | Mikkel G. Mandt | Surge anoxic mix sequencing batch reactor systems |
EP1050399A2 (en) | 1999-05-04 | 2000-11-08 | Wilhelm Fette GmbH | Rotary tabletting press |
US6676863B2 (en) | 2001-09-05 | 2004-01-13 | Courtoy Nv | Rotary tablet press and a method of using and cleaning the press |
DE102004040163B3 (en) | 2004-08-19 | 2006-05-04 | Fette Gmbh | Rotary tablet press |
Also Published As
Publication number | Publication date |
---|---|
EP2036709B1 (en) | 2013-01-09 |
US20090072491A1 (en) | 2009-03-19 |
US7637728B2 (en) | 2009-12-29 |
EP2036709A3 (en) | 2012-06-27 |
DE102007043583B3 (en) | 2009-04-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2755791B1 (en) | Tool spindle of a honing machine having a crucible-shaped holder for a honing ring | |
DE102010051766A1 (en) | Spindle drive for injection molding machine, has lubrication oil seal that limits lubrication area and lies at spindle, where lubrication oil seal is placed at end of lubrication area | |
EP2707215B1 (en) | Punch arrangement for a press and press | |
DE102020118161B4 (en) | Molded tool clamping device with a half socket and injection molding device | |
EP2065175B1 (en) | Rotary tablet compactor | |
EP2082867B1 (en) | Tablet press | |
EP1316411A2 (en) | Rotor for tabletting press | |
EP2179927B1 (en) | Seal system for packaging machine tools with integrated lifting rod | |
EP1842659A2 (en) | Press | |
CH697231B1 (en) | An apparatus for compacting powders. | |
EP2796281B1 (en) | Scraping device for rotary tablet press and rotor and rotary tablet press | |
EP2036709B1 (en) | Rotary tablet compactor | |
DE102007043584B4 (en) | Rotor for a rotary tablet press | |
EP1050685B1 (en) | Hydraulic linear slider | |
DE4436407B4 (en) | Apparatus and method for closing a multi-part chamber of a packaging machine | |
EP1731246A1 (en) | Apparatus to produce a variety of formed parts of powder. | |
EP0966610A1 (en) | High-pressure system | |
DE102009016781B3 (en) | Press plunger for rotary press, comprises plunger head at one end of plunger shaft and plunger insert at other end of plunger shaft which has axial bore in which tension rod is pivoted axially | |
DE19857744A1 (en) | Press for massive forming has clamping unit with positions in which pressure piece is locked or unlocked, and interacting with drive controlled to transfer clamping unit between clamped and released positions | |
DE4337508A1 (en) | Radial piston motor as a plug-in motor | |
EP3072675A1 (en) | Rotation press with at least one pressure roller station that can be attached to a support plate and method for fixing and releasing the pressure roller station | |
DE102013211691A1 (en) | Device and method for attaching at least one magnet in a magnetic receptacle of a rotor laminated core of a rotor of an electric machine | |
DE102023123181A1 (en) | Device for producing moldings, in particular stone moldings for masonry stones, and method for changing a format of moldings to be produced | |
DE1957995C3 (en) | Turntable tablet press | |
DE102004017126B3 (en) | Safety device for accessible press cavities has sliding sheet movable horizontally by at least one drive over stamping residue shaft |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B30B 11/08 20060101AFI20120523BHEP Ipc: B30B 15/00 20060101ALI20120523BHEP |
|
17P | Request for examination filed |
Effective date: 20120626 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE CH DE FR GB IT LI |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: CH Ref legal event code: NV Representative=s name: ISLER AND PEDRAZZINI AG, CH |
|
AKX | Designation fees paid |
Designated state(s): BE CH DE FR GB IT LI |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502008009048 Country of ref document: DE Effective date: 20130307 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20131010 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502008009048 Country of ref document: DE Effective date: 20131010 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 9 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 10 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20210930 Year of fee payment: 14 Ref country code: CH Payment date: 20210923 Year of fee payment: 14 Ref country code: FR Payment date: 20210927 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20210923 Year of fee payment: 14 Ref country code: BE Payment date: 20210921 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20211116 Year of fee payment: 14 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502008009048 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20220910 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20220930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220930 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220930 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230401 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220910 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220910 |