EP3369409B1 - Method and device for dosing powder-form filler - Google Patents

Method and device for dosing powder-form filler Download PDF

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Publication number
EP3369409B1
EP3369409B1 EP17000326.3A EP17000326A EP3369409B1 EP 3369409 B1 EP3369409 B1 EP 3369409B1 EP 17000326 A EP17000326 A EP 17000326A EP 3369409 B1 EP3369409 B1 EP 3369409B1
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EP
European Patent Office
Prior art keywords
dosing
filling material
rotational movement
plunger
powder
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EP17000326.3A
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German (de)
French (fr)
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EP3369409A1 (en
Inventor
Marco Weigel
Florian Huhnen
Jonas Höpfer
Philipp GAUS
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Harro Hofliger Verpackungsmaschinen GmbH
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Harro Hofliger Verpackungsmaschinen GmbH
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Priority to EP17000326.3A priority Critical patent/EP3369409B1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J3/00—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
    • A61J3/07—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of capsules or similar small containers for oral use
    • A61J3/071—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of capsules or similar small containers for oral use into the form of telescopically engaged two-piece capsules
    • A61J3/074—Filling capsules; Related operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
    • B65B1/36—Devices or methods for controlling or determining the quantity or quality or the material fed or filled by volumetric devices or methods
    • B65B1/38—Devices or methods for controlling or determining the quantity or quality or the material fed or filled by volumetric devices or methods by pistons co-operating with measuring chambers

Definitions

  • the invention relates to a device and a method by means of which a powdery filling material can be dosed.
  • the powdery contents can then be transferred, in particular into hard gelatine capsules, but also into other containers.
  • Devices and methods of this type are used in particular in the pharmaceutical industry for filling hard gelatine capsules with drugs.
  • the powder to be filled is filled into a dosing chamber, for example into the bores of a dosing disk.
  • the powder is then compacted in the dosing chamber using a stamp.
  • the ram performs at least one lifting movement, so that a compact is formed.
  • the finished compact is then pressed out of the dosing chamber by opening the dosing chamber and ejecting the compact by means of a stamp.
  • a stamp For example, in DE 10 2015 206407 A1 shown.
  • the invention is based on the object of specifying an improved device for dosing powdered filling material, by means of which dosing inaccuracies can be avoided.
  • the device according to the invention for dosing powdery filling material has a filling material container in which the powdery filling material can be kept in stock.
  • a defined quantity of the powdery filling material can be removed from this filling material container by means of a metering tool and transferred to a container, for example to the lower part of a hard gelatine capsule.
  • the dosing tool is designed to be movable in its longitudinal direction.
  • the dosing tool can be set into a rotational movement about its longitudinal axis by a drive unit.
  • a defined rotational movement is carried out by this drive unit, which prevents the powdered solid from adhering to the dosing tool. Dosing inaccuracies can thus be avoided, which leads to fewer rejects and thus to increased productivity.
  • a first motor drive by means of which the metering tool can be moved along its longitudinal axis.
  • the dosing tool is rotated by means of a separately designed drive unit.
  • the rotational movement can affect this Way done independently of the transport movement of the metering tool by means of the first motor drive.
  • several dosing tools could be moved in the longitudinal direction by means of a common motor drive.
  • the drive unit can enable both a clockwise rotational movement and a counter-clockwise rotational movement.
  • an alternating clockwise and anti-clockwise rotation can generate a pendulum or shearing movement, which can particularly effectively prevent solids from adhering to the metering tool.
  • the dosing tool is designed as a stamp.
  • at least one dosing chamber is formed at the base of the filling material container, into which a defined quantity of the filling material can be filled.
  • the filling material in the dosing chamber can first be compacted by the stamp to form a compact. The compact can then be ejected from the dosing chamber by the plunger.
  • the rotary movements of the ram can be carried out during the compaction of the powdery filling material in the dosing chamber and/or during the ejection of the compact from the dosing chamber.
  • Rotational movements during the compaction of the powdered filling material in the dosing chamber can already prevent the compact from adhering to the stamp.
  • a rotational movement during the ejection of the compact from the dosing chamber can ensure that the compact can be detached more easily from the plunger.
  • a rotational movement can be applied during only one of the two processes, or a combination. It would also be possible to have the punch continuously perform a rotational movement.
  • the dosing tool can be designed as a siphon.
  • the pipette can be immersed in the powder bed present in the filling material container in order to remove a defined quantity of filling material. Then the amount of powder present in the dosing chamber of the pipette can be transferred to a container that is available.
  • the rotational movements of the siphon can be carried out during the immersion of the siphon into the powder bed and/or during the ejection of the powder from the dosing chamber of the siphon.
  • Rotational movements during the immersion of the pipette into the powder bed can already prevent powder from adhering to the inner walls of the dosing chamber of the pipette at an early stage and thus enable the dosing chamber to be filled completely and precisely.
  • a rotational movement during the ejection of the powder from the dosing chamber of the siphon can ensure a complete and easy ejection of the powder.
  • a rotary movement can only be applied during one of the two processes, or a combination. It would also be possible to have the siphon continuously perform a rotational movement.
  • At least one rotational movement of the dosing piston should take place during a rotational movement of the siphon.
  • This rotational movement can already be sufficient to effectively prevent powder from sticking in the dosing chamber.
  • the dosing sleeve could also perform a rotational movement.
  • the rotational movements of the dosing piston and dosing sleeve can run in opposite directions to one another, so that a shearing movement takes place.
  • the device 10 is in Figures 1 and 2 shown.
  • the device 10 has a stamp 20 as a dosing tool, which can be set in a vertical lifting movement (arrow 22) by means of a motor drive, not shown here.
  • the plunger 20 moves through the stroke movement 22 in the bore 24 of a metering disk 26.
  • Each bore 24 of the metering disk 26 forms a metering chamber.
  • the bore 24 is closed by a plate 28 from the underside.
  • the bore 24 can initially be filled with a defined quantity of filling material.
  • the punch 20 can then in accordance with the powder present in the bore 24 1 compact to a pellet 30.
  • the plunger 20 in the embodiment shown here is set into a rotational movement (arrow 34) by a drive unit 32 .
  • the rotation 34 of the plunger 20 during the compacting of the filling material can ensure that the compact 30 being produced does not stick to the underside of the plunger 20 .
  • the rotational movement 34 takes place at a constant speed in the clockwise direction.
  • the rotational movement 34 could also take place in a counter-clockwise direction.
  • the speed during the rotational movement 34 could be varied.
  • the rotational movement could consist of several smaller, jerky movements.
  • the direction of rotation could also be changed at predetermined intervals, so that it would rotate first clockwise and then counter-clockwise. This change in direction could then be repeated as often as desired.
  • this is the lower part 40 of a hard gelatine capsule.
  • the lower capsule part 40 is positioned below the dosing chamber 24 by means of a receiving unit 42 .
  • the lower capsule part 40 can be removed laterally by the receiving unit 42 so that a new lower capsule part can be positioned under the dosing chamber 24 .
  • the filled lower capsule part 40 can then be provided with another pellet or another product in further processing stations, or it can also be closed directly.
  • the supply and removal of Capsule bottoms can be done in particular by a rotary indexing table, as for example from the EP 1 415 637 A1 or the EP 2 135 810 A1 is known.
  • the ram 20 is caused to rotate (arrow 44) by the drive unit 32 while the compact 30 is being ejected.
  • the rotation 44 of the stamp 20 during the ejection of the compact 30 detaches the compact 30 more easily from the underside of the stamp 20 and can fall into the lower capsule part 40 safely and reliably.
  • the rotational movement 44 can take place in a manner comparable to the rotational movement 34 with a constant rotational speed and direction, but also with a varying rotational speed and/or rotational direction. It would be possible to use both the rotational movement 34 during compacting ( 1 ) as well as the rotational motion 44 during ejection ( 2 ) to perform. In this case, the two rotational movements 34, 44 can be identical, but they can also be executed differently, adapted to the different situations. However, depending on the filling material used, the cycle speed of the rotary indexing table and/or the size of the compact 30, it may be sufficient to provide only the rotary movement 34 during the compaction of the filling material or the rotary movement 44 during the ejection of the compact 30 from the dosing chamber 24.
  • a device 12 not belonging to the invention is in Figures 3 and 4 shown.
  • the device 12 has a plunger 50 as a dosing tool, which can be set in a vertical lifting motion (arrow 52) by means of a motor drive, not shown here. Due to the lifting movement 52, the pipette 50 moves downwards into the filling material 56 present in a filling material container 54 and upwards out of it again.
  • the siphon 50 has an outer dosing sleeve 60 and a dosing piston 62 movably guided therein.
  • the dosing piston 62 is retracted a little from the free edge 64 of the dosing sleeve 60, so that a dosing chamber 66 is formed within the dosing sleeve 60.
  • the dosing sleeve 60 is in 3 is immersed with its free edge 64 in the filling material 56 that is present in the filling material container 54 and forms a powder bed. When the siphon 50 is immersed, the dosing chamber 66 is filled with the filling material 56.
  • the dosing piston 62 of the siphon 50 in the embodiment shown here is set in rotation by a drive unit 70 (arrow 72).
  • This rotation 72 of the dosing piston can ensure that the filling material 56 is distributed evenly in the dosing chamber 66, so that an optimal and reproducible filling of the dosing chamber 66 is achieved.
  • the rotational movement 72 takes place at a constant speed in the clockwise direction.
  • the rotational movement 72 could also take place in a counter-clockwise direction.
  • the speed during the rotational movement 72 could be varied.
  • the rotational movement could consist of several smaller, jerky movements.
  • the direction of rotation could also be changed at predetermined intervals, so that it would rotate first in a clockwise direction and then in a counter-clockwise direction. This change in direction could then be repeated as often as desired.
  • the amount of powder predetermined by the volume of the dosing chamber 66 remains in the dosing chamber 66 when the pipette 50 is pulled out of the powder bed. In this way, the powder can be transported with the siphon 50 and filled out of the dosing chamber 66 into a container provided for this purpose by means of the dosing piston 62 (see Fig 4 ). In the present example, this is the lower part 40 of a hard gelatine capsule was positioned below the lancing siphon 50 by means of a receiving unit 42 . In the present example, the dosing piston 62 of the siphon 50 is caused to rotate (arrow 74) by the drive unit 70 during the ejection of the powder present in the dosing chamber 66 . Due to the rotation 74 of the dosing piston 62 during the ejection of the powder, the dosing chamber 66 can be emptied quickly and completely.
  • the rotational movement 74 can take place in a manner comparable to the rotational movement 72 with a constant rotational speed and direction, but also with a varying rotational speed and/or rotational direction. In this case, it would be possible both the rotational movement 72 during the immersion of the pipette 50 into the filling material 56 ( 3 ) as well as the rotational movement 74 during the ejection of the powder ( 2 ) to perform. In this case, the two rotational movements 72, 74 can be identical, but they can also be executed differently, adapted to the different situations. However, it can also be sufficient to merely provide the rotational movement 72 during the immersion of the pipette 50 into the filling material 56 or the rotational movement 74 during the ejection of the powder from the dosing chamber 66 .

Description

TECHNISCHES GEBIETTECHNICAL AREA

Die Erfindung betrifft eine Vorrichtung sowie ein Verfahren, mittels derer ein pulverförmiges Füllgut dosiert werden kann. Das pulverförmige Füllgut kann anschließend insbesondere in Hartgelatinekapseln aber auch in andere Behältnisse überführt werden. Derartige Vorrichtungen und Verfahren werden insbesondere in der pharmazeutischen Industrie zur Befüllung von Hartgelatinekapseln mit Arzneimitteln eingesetzt.The invention relates to a device and a method by means of which a powdery filling material can be dosed. The powdery contents can then be transferred, in particular into hard gelatine capsules, but also into other containers. Devices and methods of this type are used in particular in the pharmaceutical industry for filling hard gelatine capsules with drugs.

STAND DER TECHNIKSTATE OF THE ART

Es ist bekannt, Hartgelatinekapseln mittels einer sogenannten Stopfvorrichtung zu befüllen. Dabei wird das einzufüllende Pulver in eine Dosierkammer, beispielsweise in die Bohrungen einer Dosierscheibe, gefüllt. Das Pulver wird anschließend mittels eines Stempels in der Dosierkammer kompaktiert. Dazu führt der Stempel zumindest eine Hubbewegung durch, so dass ein Pressling entsteht. Der fertige Pressling wird dann aus der Dosierkammer ausgedrückt, indem die Dosierkammer geöffnet und der Pressling mittels eines Stempels ausgestoßen wird Eine solche Vorrichtung ist beispielsweise in DE 10 2015 206407 A1 gezeigt.It is known to fill hard gelatine capsules by means of a stuffing device. In this case, the powder to be filled is filled into a dosing chamber, for example into the bores of a dosing disk. The powder is then compacted in the dosing chamber using a stamp. For this purpose, the ram performs at least one lifting movement, so that a compact is formed. The finished compact is then pressed out of the dosing chamber by opening the dosing chamber and ejecting the compact by means of a stamp. Such a device is shown, for example, in DE 10 2015 206407 A1 shown.

Beim Ausdrücken des Presslings aus der Dosierkammer kann es insbesondere bei klebrigen Pulvern vorkommen, dass der Pressling an dem Stempel hängen bleibt und nicht in die Hartgelatinekapsel abfällt. Der Pressling wird in diesem Fall wieder mit dem Stempel zurückgezogen. Dies führt zu einer schlechten Dosiergenauigkeit und folglich zu einem größeren Ausschuss.When squeezing the pellet out of the dosing chamber, it can happen, especially with sticky powders, that the pellet gets stuck on the plunger and does not fall into the hard gelatine capsule. In this case, the pellet is pulled back with the punch. This leads to poor dosing accuracy and consequently to larger rejects.

Entsprechend der EP 2 175 825 A1 (entspricht WO 2009/ 007275 A1 ) wird vorgeschlagen, die Stempel mittels eines Hubstößels in Längsrichtung der Stempel anzustoßen, so dass die Stempel in Längsrichtung vibrieren. Dies soll das Lösen der Presslinge von dem Stempel erleichtern.According to the EP 2 175 825 A1 (is equivalent to WO 2009/007275 A1 ) it is proposed to hit the stamps by means of a lifting ram in the longitudinal direction of the stamps, so that the stamps vibrate in the longitudinal direction. This should make it easier to release the pellets from the stamp.

Darüber hinaus ist es bekannt, Hartgelatinekapseln mittels eines Stechhebers zu befüllen. Bekannte Stechheber besitzen eine äußere Dosierhülse und einen darin verschiebbar geführten Dosierkolben. Der Dosierkolben wird gegenüber einer freien Kante der Dosierhülse zurückgezogen, so dass sich innerhalb der Dosierhülse eine Dosierkammer bildet. Die Dosierhülse wird dann in ein Pulverbett eingetaucht, wobei das Dosiervolumen durch eine Hubbewegung des Dosierkolbens eingestellt werden kann. Beim Eintauchen des Stechhebers befüllt sich die Dosierkammer mit dem Pulver. Die durch das Volumen der Dosierkammer vorgegebene Pulvermenge bleibt beim Herausziehen des Stechhebers aus dem Pulverbett in der Dosierkammer hängen. Anschließend wird das Pulver mit dem Dosierkolben kompaktiert. Das Pulver kann mit dem Stechheber transportiert und mittels des Dosierkolbens aus der Dosierkammer heraus in den vorgesehenen Behälter gefüllt werden.In addition, it is known to fill hard gelatine capsules using a siphon. Known pipettes have an outer dosing sleeve and a dosing piston that is displaceably guided therein. The dosing piston is pulled back from a free edge of the dosing sleeve, so that a dosing chamber is formed inside the dosing sleeve. The dosing sleeve is then immersed in a powder bed, whereby the dosing volume can be adjusted by lifting the dosing piston. When the siphon is immersed, the dosing chamber fills with the powder. The amount of powder specified by the volume of the dosing chamber remains in the dosing chamber when the pipette is pulled out of the powder bed. The powder is then compacted with the dosing piston. The powder can be transported with the pipette and filled out of the dosing chamber into the intended container using the dosing piston.

Insbesondere bei klebrigen Pulvern kann es auch bei der Verwendung von Stechhebern zu Problemen kommen. So kann das Befüllen des Stechhebers mit dem Pulver dadurch gestört werden, dass bereits in der Dosierhülse vorhandene Pulver mit den Innenwänden der Dosierhülse verklebt, so dass sich die Dosierkammer nicht vollständig mit Pulver füllt. Alternativ oder zusätzlich dazu kann das Entleeren der Dosierkammer bei klebrigen Pulvern erschwert sein. Insgesamt kann es dadurch zu Dosierungenauigkeiten kommen.Problems can also arise when using siphons, especially with sticky powders. Thus, the filling of the pipette with the powder can be disrupted in that powder already present in the dosing sleeve sticks to the inner walls of the dosing sleeve, so that the dosing chamber is not completely filled with powder. As an alternative or in addition to this, emptying the dosing chamber can be more difficult with sticky powders. Overall, this can lead to dosage inaccuracies.

Aus der DE 2 050 885 A1 oder der DE 699 29 633 T2 sind Stechheber bekannt, bei denen die Hülse des Stechhebers mit einer gewindeartigen Struktur versehen ist. Bei einer Hubbewegung des Dosierstempels wird dieser durch die gewindeartige Struktur in eine Rotationsbewegung versetzt. Die Dauer und die Geschwindigkeit der Rotationsbewegung ist dabei von der Hubbewegung abhängig.From the DE 2 050 885 A1 or the DE 699 29 633 T2 siphons are known in which the sleeve of the siphon is provided with a thread-like structure. During a lifting movement of the dosing plunger, the thread-like structure causes it to rotate shifted. The duration and speed of the rotational movement is dependent on the lifting movement.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Ausgehend von diesem vorbekannten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine verbesserte Vorrichtung zum Dosieren von pulverförmigem Füllgut anzugeben, mittels der Dosierungenauigkeiten vermieden werden können.Proceeding from this previously known state of the art, the invention is based on the object of specifying an improved device for dosing powdered filling material, by means of which dosing inaccuracies can be avoided.

Die erfindungsgemäße Vorrichtung ist durch die Merkmale des Hauptanspruchs 1 gegeben. Sinnvolle Weiterbildungen der Erfindung sind Gegenstand von sich an diese Ansprüche anschließenden weiteren Ansprüchen.The device according to the invention is given by the features of main claim 1. Meaningful developments of the invention are the subject matter of further claims that follow these claims.

Die erfindungsgemäße Vorrichtung zum Dosieren von pulverförmigem Füllgut besitzt einen Füllgutbehälter, in dem das pulverförmige Füllgut vorrätig gehalten werden kann. Aus diesem Füllgutbehälter kann eine definierte Menge des pulverförmigen Füllguts mittels eines Dosierwerkzeugs entnommen und in ein Behältnis - beispielsweise in das Kapselunterteil einer Hartgelatinekapsel - überführt werden. Das Dosierwerkzeug ist dazu in seiner Längsrichtung beweglich ausgebildet. Dabei kann das Dosierwerkzeug durch eine Antriebseinheit in eine Rotationsbewegung um seine Längsachse versetzt werden. Durch diese Antriebseinheit wird eine definierte Rotationsbewegung ausgeführt, die ein Anhaften des pulverförmigen Feststoffs an dem Dosierwerkzeug verhindert. Dadurch können Dosierungenauigkeiten vermieden werden, was zu einem geringeren Ausschuss und damit zu einer gesteigerten Produktivität führt.The device according to the invention for dosing powdery filling material has a filling material container in which the powdery filling material can be kept in stock. A defined quantity of the powdery filling material can be removed from this filling material container by means of a metering tool and transferred to a container, for example to the lower part of a hard gelatine capsule. For this purpose, the dosing tool is designed to be movable in its longitudinal direction. In this case, the dosing tool can be set into a rotational movement about its longitudinal axis by a drive unit. A defined rotational movement is carried out by this drive unit, which prevents the powdered solid from adhering to the dosing tool. Dosing inaccuracies can thus be avoided, which leads to fewer rejects and thus to increased productivity.

Erfindungsgemäß ist ein erster motorischer Antrieb vorhanden, mittels dem das Dosierwerkzeug entlang seiner Längsachse bewegt werden kann. Die Rotation des Dosierwerkzeugs erfolgt mittels einer separat ausgebildeten Antriebseinheit. Die Rotationsbewegung kann auf diese Weise unabhängig von der Transportbewegung des Dosierwerkzeugs mittels des ersten motorischen Antriebs erfolgen. Darüber hinaus könnten mehrere Dosierwerkzeuge mittels eines gemeinsamen motorischen Antriebs in Längsrichtung bewegt werden.According to the invention, there is a first motor drive, by means of which the metering tool can be moved along its longitudinal axis. The dosing tool is rotated by means of a separately designed drive unit. The rotational movement can affect this Way done independently of the transport movement of the metering tool by means of the first motor drive. In addition, several dosing tools could be moved in the longitudinal direction by means of a common motor drive.

Vorzugsweise kann die Antriebseinheit sowohl eine Rotationsbewegung im Uhrzeigersinn als auch eine Rotationsbewegung im Gegen-Uhrzeigersinn ermöglichen. Durch eine wechselseitige Rotation im Uhrzeigersinn und im Gegen-Uhrzeigersinn kann in einer besonders vorteilhaften Ausführungsform eine Pendel- oder Scherbewegung erzeugt werden, durch die ein Anhaften von Feststoff an dem Dosierwerkzeug besonders effektiv verhindert werden kann.Preferably, the drive unit can enable both a clockwise rotational movement and a counter-clockwise rotational movement. In a particularly advantageous embodiment, an alternating clockwise and anti-clockwise rotation can generate a pendulum or shearing movement, which can particularly effectively prevent solids from adhering to the metering tool.

Das Dosierwerkzeug ist als Stempel ausgebildet sein. In diesem Fall ist am Grund des Füllgutbehälters zumindest eine Dosierkammer ausgebildet, in die eine definierte Menge des Füllguts eingefüllt werden kann. Das Füllgut in der Dosierkammer kann in diesem Fall zunächst von dem Stempel zu einem Pressling kompaktiert werden. Anschließend kann durch den Stempel das Ausstoßen des Presslings aus der Dosierkammer erfolgen.The dosing tool is designed as a stamp. In this case, at least one dosing chamber is formed at the base of the filling material container, into which a defined quantity of the filling material can be filled. In this case, the filling material in the dosing chamber can first be compacted by the stamp to form a compact. The compact can then be ejected from the dosing chamber by the plunger.

Die Rotationsbewegungen des Stempels können während des Kompaktierens des pulverförmigen Füllguts in der Dosierkammer und/ oder während des Ausstoßens des Presslings aus der Dosierkammer durchgeführt werden. Rotationsbewegungen während des Kompaktierens des pulverförmigen Füllguts in der Dosierkammer können bereits das Anhaften des Presslings an dem Stempel verhindern. Demgegenüber kann eine Rotationsbewegung während des Ausstoßens des Presslings aus der Dosierkammer für ein leichteres Ablösen des Presslings von dem Stempel sorgen. Abhängig von der Art des pulverförmigen Füllguts und von der Größe des sich bildenden Presslings kann lediglich während eines der beiden Vorgänge eine Rotationsbewegung angebracht sein, oder auch eine Kombination. Es wäre auch möglich, den Stempel durchgehend eine Rotationsbewegung ausführen zu lassen.The rotary movements of the ram can be carried out during the compaction of the powdery filling material in the dosing chamber and/or during the ejection of the compact from the dosing chamber. Rotational movements during the compaction of the powdered filling material in the dosing chamber can already prevent the compact from adhering to the stamp. In contrast, a rotational movement during the ejection of the compact from the dosing chamber can ensure that the compact can be detached more easily from the plunger. Depending on the type of powdered filling material and the size of the compact being formed, a rotational movement can be applied during only one of the two processes, or a combination. It would also be possible to have the punch continuously perform a rotational movement.

In einer zweiten Ausführungsform, die nicht Teil der Erfindung bildet, kann das Dosierwerkzeug als Stechheber ausgebildet sein. In diesem Fall kann der Stechheber in das in dem Füllgutbehälter vorhandene Pulverbett eingetaucht werden, um eine definierte Menge an Füllgut zu entnehmen. Anschließend kann die in der Dosierkammer des Stechhebers vorhandene Menge an Pulver in ein bereitstehendes Behältnis überführt werden.In a second embodiment, which does not form part of the invention, the dosing tool can be designed as a siphon. In this case, the pipette can be immersed in the powder bed present in the filling material container in order to remove a defined quantity of filling material. Then the amount of powder present in the dosing chamber of the pipette can be transferred to a container that is available.

Die Rotationsbewegungen des Stechhebers können während des Eintauchens des Stechhebers in das Pulverbett und/oder während des Ausstoßens des Pulvers aus der Dosierkammer des Stechhebers durchgeführt werden. Rotationsbewegungen während des Eintauchens des Stechhebers in das Pulverbett können bereits das frühzeitige Anhaften von Pulver an den Innenwänden der Dosierkammer des Stechhebers verhindern und somit eine vollständige und exakte Befüllung der Dosierkammer ermöglichen. Demgegenüber kann eine Rotationsbewegung während des Ausstoßens des Pulvers aus der Dosierkammer des Stechhebers für ein vollständiges und leichtes Ausstoßen des Pulvers sorgen. Abhängig von der Art des pulverförmigen Füllguts und von der Größe der Dosierkammer des Stechhebers kann lediglich während eines der beiden Vorgänge eine Rotationsbewegung angebracht sein, oder auch eine Kombination. Es wäre auch möglich, den Stechheber durchgehend eine Rotationsbewegung ausführen zu lassen.The rotational movements of the siphon can be carried out during the immersion of the siphon into the powder bed and/or during the ejection of the powder from the dosing chamber of the siphon. Rotational movements during the immersion of the pipette into the powder bed can already prevent powder from adhering to the inner walls of the dosing chamber of the pipette at an early stage and thus enable the dosing chamber to be filled completely and precisely. On the other hand, a rotational movement during the ejection of the powder from the dosing chamber of the siphon can ensure a complete and easy ejection of the powder. Depending on the type of powdered filling material and the size of the dosing chamber of the siphon, a rotary movement can only be applied during one of the two processes, or a combination. It would also be possible to have the siphon continuously perform a rotational movement.

Vorzugsweise sollte bei einer Rotationsbewegung des Stechhebers zumindest eine Rotationsbewegung des Dosierkolbens erfolgen. Diese Rotationsbewegung kann bereits ausreichend sein, um ein Anhaften von Pulver in der Dosierkammer effektiv zu verhindern. Zusätzlich zu der Rotationsbewegung des Dosierkolbens könnte auch die Dosierhülse eine Rotationsbewegung ausführen. Dabei können die Rotationsbewegungen von Dosierkolben und Dosierhülse gegensätzlich zueinander verlaufen, so dass eine Scherbewegung erfolgt.Preferably, at least one rotational movement of the dosing piston should take place during a rotational movement of the siphon. This rotational movement can already be sufficient to effectively prevent powder from sticking in the dosing chamber. In addition to the rotational movement of the dosing piston, the dosing sleeve could also perform a rotational movement. The rotational movements of the dosing piston and dosing sleeve can run in opposite directions to one another, so that a shearing movement takes place.

Dabei ist es nicht erforderlich, dass jeweils eine vollständige Umdrehung im Uhrzeigersinn oder im Gegen-Uhrzeigersinn ausgeführt wird. Vielmehr kann es ausreichend sein, die Rotation lediglich ein Stück weit auszuführen und dann zu stoppen. Anschließend kann die Rotation in die gleiche Richtung oder in die entgegengesetzte Richtung fortgeführt werden.It is not necessary for a complete clockwise or counter-clockwise rotation to be carried out in each case. Rather, it may be sufficient to perform the rotation only a little and then stop it. Then the rotation can be continued in the same direction or in the opposite direction.

Weitere Vorteile und Merkmale der Erfindung sind den in den Ansprüchen ferner angegebenen Merkmalen sowie den nachstehenden Ausführungsbeispielen zu entnehmen.Further advantages and features of the invention can be found in the features also specified in the claims and in the exemplary embodiments below.

KURZE BESCHREIBUNG DER ZEICHNUNGBRIEF DESCRIPTION OF THE DRAWING

Die Erfindung wird im Folgenden anhand der in der Zeichnung dargestellten Ausführungsbeispiele näher beschrieben und erläutert. Es zeigen:

Fig. 1
eine erste Ausführungsform der erfindungsgemäßen Vorrichtung, bei der das Dosierwerkzeug als Stempel ausgebildet ist, während des Kompaktierens des Füllguts in der Dosierkammer,
Fig. 2
die Vorrichtung gemäß Fig. 1 während des Ausstoßens des Presslings aus der Dosierkammer,
Fig. 3
eine zweite Ausführungsform der Vorrichtung, bei der das Dosierwerkzeug als Stechheber ausgebildet ist, während des Füllens der Dosierkammer mit Füllgut und
Fig. 4
die Vorrichtung gemäß Fig. 3 während des Ausstoßens des Pulvers aus der Dosierkammer des Stechhebers. WEGE ZUM AUSFÜHREN DER ERFINDUNG
The invention is described and explained in more detail below with reference to the exemplary embodiments shown in the drawing. Show it:
1
a first embodiment of the device according to the invention, in which the dosing tool is designed as a stamp, during the compacting of the filling material in the dosing chamber,
2
the device according to 1 during the ejection of the compact from the dosing chamber,
3
a second embodiment of the device, in which the dosing tool is designed as a siphon, during the filling of the dosing chamber with filling material and
4
the device according to 3 during the ejection of the powder from the dosing chamber of the siphon. WAYS TO CARRY OUT THE INVENTION

Die erfindungsgemäße Vorrichtung 10 ist in Fig. 1 und 2 dargestellt. Die Vorrichtung 10 besitzt als Dosierwerkzeug einen Stempel 20, der mittels eines hier nicht dargestellten motorischen Antriebs in eine senkrechte Hubbewegung (Pfeil 22) versetzt werden kann. Der Stempel 20 bewegt sich durch die Hubbewegung 22 in der Bohrung 24 einer Dosierscheibe 26. Jede Bohrung 24 der Dosierscheibe 26 bildet dabei eine Dosierkammer.The device 10 according to the invention is in Figures 1 and 2 shown. The device 10 has a stamp 20 as a dosing tool, which can be set in a vertical lifting movement (arrow 22) by means of a motor drive, not shown here. The plunger 20 moves through the stroke movement 22 in the bore 24 of a metering disk 26. Each bore 24 of the metering disk 26 forms a metering chamber.

In Fig. 1 ist die Bohrung 24 von der Unterseite her durch eine Platte 28 verschlossen. Dadurch kann die Bohrung 24 zunächst mit einer definierten Menge an Füllgut befüllt werden. Der Stempel 20 kann das in der Bohrung 24 vorhandene Pulver anschließend gemäß Fig. 1 zu einem Pressling 30 kompaktieren. Während des Kompaktierens des Füllguts wird der Stempel 20 in der hier dargestellten Ausführungsform durch eine Antriebseinheit 32 in eine Rotationsbewegung (Pfeil 34) versetzt. Die Rotation 34 des Stempels 20 während des Kompaktierens des Füllguts kann dafür sorgen, dass der entstehende Pressling 30 nicht an der Unterseite des Stempels 20 anhaftet.In 1 the bore 24 is closed by a plate 28 from the underside. As a result, the bore 24 can initially be filled with a defined quantity of filling material. The punch 20 can then in accordance with the powder present in the bore 24 1 compact to a pellet 30. During the compacting of the filling material, the plunger 20 in the embodiment shown here is set into a rotational movement (arrow 34) by a drive unit 32 . The rotation 34 of the plunger 20 during the compacting of the filling material can ensure that the compact 30 being produced does not stick to the underside of the plunger 20 .

Im vorliegenden Beispielsfall erfolgt die Rotationsbewegung 34 mit einer konstanten Geschwindigkeit im Uhrzeigersinn. Im Gegensatz dazu könnte die Rotationsbewegung 34 auch im Gegen-Uhrzeigersinn erfolgen. Alternativ oder zusätzlich dazu könnte die Geschwindigkeit während der Rotationsbewegung 34 variiert werden. So könnte die Rotationsbewegung aus mehreren kleineren, ruckartigen Bewegungsstößen bestehen. Darüber hinaus könnte auch die Rotationsrichtung in vorbestimmten Abständen geändert werden, so dass zunächst im Uhrzeigersinn und anschließend im Gegen-Uhrzeigersinn rotiert würde. Diese Richtungsänderung könnte dann beliebig oft wiederholt werden.In the present example, the rotational movement 34 takes place at a constant speed in the clockwise direction. In contrast to this, the rotational movement 34 could also take place in a counter-clockwise direction. Alternatively or additionally, the speed during the rotational movement 34 could be varied. The rotational movement could consist of several smaller, jerky movements. In addition, the direction of rotation could also be changed at predetermined intervals, so that it would rotate first clockwise and then counter-clockwise. This change in direction could then be repeated as often as desired.

Nach dem Kompaktieren des Füllguts zu einem Pressling 30 erfolgt entsprechend Fig. 2 das Ausstoßen des Presslings 30 in ein geeignetes Behältnis. Im vorliegenden Beispielsfall handelt es sich dabei um das Kapselunterteil 40 einer Hartgelatinekapsel. Das Kapselunterteil 40 wird mittels einer Aufnahmeeinheit 42 unterhalb der Dosierkammer 24 positioniert. Nach dem Befüllen des Kapselunterteils 40 mit dem Pressling 30 kann das Kapselunterteil 40 durch die Aufnahmeeinheit 42 seitlich entfernt werden, so dass ein neues Kapselunterteil unter der Dosierkammer 24 positioniert werden kann. Das befüllte Kapselunterteil 40 kann dann in weiteren Bearbeitungsstationen mit einem weiteren Pressling oder einem anderen Produkt versehen oder auch direkt verschlossen werden. Das Zuführen und Wegführen der Kapselunterteile kann insbesondere durch einen Rundschalttisch erfolgen, wie er beispielsweise aus der EP 1 415 637 A1 oder der EP 2 135 810 A1 bekannt ist.After the filling material has been compacted to form a pressed part 30 , this takes place accordingly 2 the ejection of the compact 30 into a suitable container. In the present example, this is the lower part 40 of a hard gelatine capsule. The lower capsule part 40 is positioned below the dosing chamber 24 by means of a receiving unit 42 . After filling the lower capsule part 40 with the compact 30 , the lower capsule part 40 can be removed laterally by the receiving unit 42 so that a new lower capsule part can be positioned under the dosing chamber 24 . The filled lower capsule part 40 can then be provided with another pellet or another product in further processing stations, or it can also be closed directly. The supply and removal of Capsule bottoms can be done in particular by a rotary indexing table, as for example from the EP 1 415 637 A1 or the EP 2 135 810 A1 is known.

Im vorliegenden Beispielsfall wird der Stempel 20 während des Ausstoßens des Presslings 30 durch die Antriebseinheit 32 in eine Rotationsbewegung (Pfeil 44) versetzt. Durch die Rotation 44 des Stempels 20 während des Ausstoßens des Presslings 30 löst sich der Pressling 30 leichter von der Unterseite des Stempels 20 und kann sicher und zuverlässig in das Kapselunterteil 40 fallen.In the present example, the ram 20 is caused to rotate (arrow 44) by the drive unit 32 while the compact 30 is being ejected. The rotation 44 of the stamp 20 during the ejection of the compact 30 detaches the compact 30 more easily from the underside of the stamp 20 and can fall into the lower capsule part 40 safely and reliably.

Die Rotationsbewegung 44 kann dabei vergleichbar der Rotationsbewegung 34 mit konstanter Rotationsgeschwindigkeit und -richtung aber auch mit variierender Rotationsgeschwindigkeit und/oder Rotationsrichtung erfolgen. Dabei wäre es möglich, sowohl die Rotationsbewegung 34 während des Kompaktierens (Fig. 1) als auch die Rotationsbewegung 44 während des Ausstoßens (Fig. 2) durchzuführen. In diesem Fall können die beiden Rotationsbewegungen 34, 44 identisch sein, aber auch an die unterschiedlichen Situationen angepasst unterschiedlich ausgeführt werden. Abhängig von dem verwendeten Füllgut, der Taktgeschwindigkeit des Rundschalttisches und/oder der Größe des Presslings 30 kann es jedoch ausreichend sein, lediglich die Rotationsbewegung 34 während des Kompaktierens des Füllguts oder die Rotationsbewegung 44 während des Ausstoßens des Presslings 30 aus der Dosierkammer 24 vorzusehen.The rotational movement 44 can take place in a manner comparable to the rotational movement 34 with a constant rotational speed and direction, but also with a varying rotational speed and/or rotational direction. It would be possible to use both the rotational movement 34 during compacting ( 1 ) as well as the rotational motion 44 during ejection ( 2 ) to perform. In this case, the two rotational movements 34, 44 can be identical, but they can also be executed differently, adapted to the different situations. However, depending on the filling material used, the cycle speed of the rotary indexing table and/or the size of the compact 30, it may be sufficient to provide only the rotary movement 34 during the compaction of the filling material or the rotary movement 44 during the ejection of the compact 30 from the dosing chamber 24.

Eine nicht zur Erfindung gehörige Vorrichtung 12 ist in Fig. 3 und 4 dargestellt. Die Vorrichtung 12 besitzt als Dosierwerkzeug einen Stechheber 50, der mittels eines hier nicht dargestellten motorischen Antriebs in eine senkrechte Hubbewegung (Pfeil 52) versetzt werden kann. Der Stechheber 50 bewegt sich durch die Hubbewegung 52 nach unten in das in einem Füllgutbehälter 54 vorhandene Füllgut 56 und wieder nach oben aus diesem heraus.A device 12 not belonging to the invention is in Figures 3 and 4 shown. The device 12 has a plunger 50 as a dosing tool, which can be set in a vertical lifting motion (arrow 52) by means of a motor drive, not shown here. Due to the lifting movement 52, the pipette 50 moves downwards into the filling material 56 present in a filling material container 54 and upwards out of it again.

Der Stechheber 50 besitzt eine äußere Dosierhülse 60 und einen darin verschiebbar geführten Dosierkolben 62. Der Dosierkolben 62 ist gegenüber der freien Kante 64 der Dosierhülse 60 ein Stück weit zurückgezogen, so dass sich innerhalb der Dosierhülse 60 eine Dosierkammer 66 bildet. Die Dosierhülse 60 ist in Fig. 3 mit ihrer freien Kante 64 in das in dem Füllgutbehälter 54 vorhandene, ein Pulverbett bildende Füllgut 56 eingetaucht. Beim Eintauchen des Stechhebers 50 befüllt sich die Dosierkammer 66 mit dem Füllgut 56. Während des Eintauchens des Stechhebers 50 in das Füllgut 56 wird der Dosierkolben 62 des Stechhebers 50 in der hier dargestellten Ausführungsform durch eine Antriebseinheit 70 in eine Rotationsbewegung (Pfeil 72) versetzt. Diese Rotation 72 des des Dosierkolbens kann dafür sorgen, dass das Füllgut 56 gleichmäßig in der Dosierkammer 66 verteilt vorliegt, so dass eine optimale und reproduzierbare Füllung der Dosierkammer 66 erreicht wird.The siphon 50 has an outer dosing sleeve 60 and a dosing piston 62 movably guided therein. The dosing piston 62 is retracted a little from the free edge 64 of the dosing sleeve 60, so that a dosing chamber 66 is formed within the dosing sleeve 60. The dosing sleeve 60 is in 3 is immersed with its free edge 64 in the filling material 56 that is present in the filling material container 54 and forms a powder bed. When the siphon 50 is immersed, the dosing chamber 66 is filled with the filling material 56. During the immersion of the siphon 50 in the filling material 56, the dosing piston 62 of the siphon 50 in the embodiment shown here is set in rotation by a drive unit 70 (arrow 72). This rotation 72 of the dosing piston can ensure that the filling material 56 is distributed evenly in the dosing chamber 66, so that an optimal and reproducible filling of the dosing chamber 66 is achieved.

Im vorliegenden Beispielsfall erfolgt die Rotationsbewegung 72 mit einer konstanten Geschwindigkeit im Uhrzeigersinn. Im Gegensatz dazu könnte die Rotationsbewegung 72 auch im Gegen-Uhrzeigersinn erfolgen. Alternativ oder zusätzlich dazu könnte die Geschwindigkeit während der Rotationsbewegung 72 variiert werden. So könnte die Rotationsbewegung aus mehreren kleineren, ruckartigen Bewegungsstößen bestehen. Darüber hinaus könnte auch die Rotationsrichtung in vorbestimmten Abständen geändert werden, so dass zunächst im Uhrzeigersinn und anschließend im Gegen-Uhrzeigersinn rotiert würde. Diese Richtungsänderung könnte dann beliebig oft wiederholt werden.In the present example, the rotational movement 72 takes place at a constant speed in the clockwise direction. In contrast to this, the rotational movement 72 could also take place in a counter-clockwise direction. Alternatively or in addition, the speed during the rotational movement 72 could be varied. The rotational movement could consist of several smaller, jerky movements. In addition, the direction of rotation could also be changed at predetermined intervals, so that it would rotate first in a clockwise direction and then in a counter-clockwise direction. This change in direction could then be repeated as often as desired.

Die durch das Volumen der Dosierkammer 66 vorgegebene Pulvermenge bleibt beim Herausziehen des Stechhebers 50 aus dem Pulverbett in der Dosierkammer 66 hängen. Das Pulver kann auf diese Weise mit dem Stechheber 50 transportiert und mittels des Dosierkolbens 62 aus der Dosierkammer 66 heraus in ein dafür vorgesehenes Behältnis gefüllt werden (siehe Fig. 4). Im vorliegenden Beispielsfall handelt es sich dabei um das Kapselunterteil 40 einer Hartgelatinekapsel, das mittels einer Aufnahmeeinheit 42 unterhalb des Stechhebers 50 positioniert wurde. Im vorliegenden Beispielsfall wird der Dosierkolben 62 des Stechhebers 50 während des Ausstoßens des in der Dosierkammer 66 vorhandenen Pulvers durch die Antriebseinheit 70 in eine Rotationsbewegung (Pfeil 74) versetzt. Durch die Rotation 74 des Dosierkolbens 62 während des Ausstoßens des Pulvers kann die Dosierkammer 66 rasch und vollständig entleert werden.The amount of powder predetermined by the volume of the dosing chamber 66 remains in the dosing chamber 66 when the pipette 50 is pulled out of the powder bed. In this way, the powder can be transported with the siphon 50 and filled out of the dosing chamber 66 into a container provided for this purpose by means of the dosing piston 62 (see Fig 4 ). In the present example, this is the lower part 40 of a hard gelatine capsule was positioned below the lancing siphon 50 by means of a receiving unit 42 . In the present example, the dosing piston 62 of the siphon 50 is caused to rotate (arrow 74) by the drive unit 70 during the ejection of the powder present in the dosing chamber 66 . Due to the rotation 74 of the dosing piston 62 during the ejection of the powder, the dosing chamber 66 can be emptied quickly and completely.

Die Rotationsbewegung 74 kann dabei vergleichbar der Rotationsbewegung 72 mit konstanter Rotationsgeschwindigkeit und -richtung aber auch mit variierender Rotationsgeschwindigkeit und/oder Rotationsrichtung erfolgen. Dabei wäre es möglich, sowohl die Rotationsbewegung 72 während des Eintauchens des Stechhebers 50 in das Füllgut 56 (Fig. 3) als auch die Rotationsbewegung 74 während des Ausstoßens des Pulvers (Fig. 2) durchzuführen. In diesem Fall können die beiden Rotationsbewegungen 72, 74 identisch sein, aber auch an die unterschiedlichen Situationen angepasst unterschiedlich ausgeführt werden. Es kann jedoch auch ausreichend sein, lediglich die Rotationsbewegung 72 während des Eintauchens des Stechhebers 50 in das Füllgut 56 oder die Rotationsbewegung 74 während des Ausstoßens des Pulvers aus der Dosierkammer 66 vorzusehen.The rotational movement 74 can take place in a manner comparable to the rotational movement 72 with a constant rotational speed and direction, but also with a varying rotational speed and/or rotational direction. In this case, it would be possible both the rotational movement 72 during the immersion of the pipette 50 into the filling material 56 ( 3 ) as well as the rotational movement 74 during the ejection of the powder ( 2 ) to perform. In this case, the two rotational movements 72, 74 can be identical, but they can also be executed differently, adapted to the different situations. However, it can also be sufficient to merely provide the rotational movement 72 during the immersion of the pipette 50 into the filling material 56 or the rotational movement 74 during the ejection of the powder from the dosing chamber 66 .

Claims (4)

  1. Device (10, 12) for metering powdery filling material (56),
    - having a filling material container (54),
    - having a metering disc (26), which is arranged at the bottom of the filling material container (54), there being at least one metering chamber (24) in the metering disc (26),
    - having a plate (28), by which the metering chamber (24) can be closed from the underside of the metering disc (24),
    - having at least one plunger (20), which can be moved in its longitudinal direction and by means of which a defined quantity of the powdery filling material (56) can be transferred into a container (40),
    - having a first motorized drive, by means of which the plunger (20) can be moved in a reciprocating movement (22) along its longitudinal axis,
    - characterized in that
    - there is at least one drive unit (32), by means of which the at least one plunger (20) can be set into a rotational movement (34, 44) about its longitudinal axis,
    - the drive unit (32) for the rotation (34, 44) of the plunger (20) is formed as a separate drive, so that the rotational movement (34, 44) can be carried out independently of the reciprocating movement (22).
  2. Device according to Claim 1,
    - characterized in that
    - the at least one plunger (20) can be set into a rotational movement (34, 44) in the clockwise direction and/or into a rotational movement in the anti-clockwise direction by the drive unit (32).
  3. Device according to Claim 2,
    - characterized in that
    - the at least one plunger (20) can be set into a pendulum movement about its longitudinal axis by the drive unit (32).
  4. Device according to one of the preceding claims,
    - characterized in that
    - by means of the plunger (20), a defined quantity of the powdery filling material can be compacted within the metering chamber (24) to form a pellet (30),
    - the pellet (30) can be ejected from the metering chamber (24) by the plunger (20).
EP17000326.3A 2017-03-02 2017-03-02 Method and device for dosing powder-form filler Active EP3369409B1 (en)

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EP3369409B1 true EP3369409B1 (en) 2023-07-12

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Publication number Priority date Publication date Assignee Title
IT201900012504A1 (en) 2019-07-22 2021-01-22 Ima Spa Machine and method for filling capsules.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015206407A1 (en) * 2015-04-10 2016-10-13 Robert Bosch Gmbh Device for dosing powdered product

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2050885C3 (en) * 1969-10-21 1974-02-28 Fratelli Zanasi S.P.A., Ozzano Emilia, Bologna (Italien) Process for dosing powdery substances with the aid of a plunger dosing device
IT1304780B1 (en) * 1998-12-03 2001-03-29 Ima Spa APPARATUS TO DETECT FUNCTIONS RELATING TO THE MASS OF ALL THE DOSES PRODUCED TO BE PACKED IN HARD JELLY CAPSULES, TO DETECT
DE20216953U1 (en) 2002-10-31 2002-12-19 Hoefliger Harro Verpackung Rotary indexing table for filling containers with powder
DE102007031856A1 (en) 2007-07-09 2009-01-15 Robert Bosch Gmbh Device for dosing powdered product
DE202008007921U1 (en) 2008-06-16 2008-08-21 Harro Höfliger Verpackungsmaschinen GmbH Tactile drivable rotary indexing table for filling containers with powder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015206407A1 (en) * 2015-04-10 2016-10-13 Robert Bosch Gmbh Device for dosing powdered product

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