EP1582467A1 - Apparatus for the dosed filling of bulk material. - Google Patents

Apparatus for the dosed filling of bulk material. Download PDF

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Publication number
EP1582467A1
EP1582467A1 EP05101280A EP05101280A EP1582467A1 EP 1582467 A1 EP1582467 A1 EP 1582467A1 EP 05101280 A EP05101280 A EP 05101280A EP 05101280 A EP05101280 A EP 05101280A EP 1582467 A1 EP1582467 A1 EP 1582467A1
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EP
European Patent Office
Prior art keywords
closing
filling tube
metering element
filling
region
Prior art date
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Granted
Application number
EP05101280A
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German (de)
French (fr)
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EP1582467B1 (en
Inventor
Willy Altermatt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP1582467A1 publication Critical patent/EP1582467A1/en
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    • 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
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/001—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves
    • B65B39/004—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves moving linearly

Definitions

  • the invention relates to a device for the metered filling of bulk material according to Preamble of claim 1.
  • Such devices have a vertically extending filling tube with a therein axial direction movable and rotatable dosing on.
  • a vertically extending filling tube with a therein axial direction movable and rotatable dosing on.
  • Container to be filled bulk material is poured into the top of the filling tube and by means of the dosing screw in metered portions at the lower end of the filling tube in the Bag promoted.
  • To interrupt the flow and portioning can be the lower Close the end of the filling tube with a closing agent.
  • DE-A-102'21'567 discloses a device in which the metering screw a frusto-conical closing head with a seal. Im raised Condition of the metering screw, this seal is located on the lower end face of the filling tube.
  • EP-A-0'967'149 shows a metering screw with a biconical closing head, this being in the lowered state on a conical inner surface of the filling tube rests and thus closes the outlet opening.
  • the bulk material tends to be in the outlet area on the inner wall depositing and clumping the filling tube. Such clumping disturb However, the further flow and thus the exact dosage. The deposits also prevent complete closure of the outlet opening.
  • EP-A-0'514'770 discloses a device for conveying pastes, wherein the device a screw conveyor, which at its lower end in a cone-shaped Warehouse is stored.
  • the inventive device has a filling tube and a rotatable in the filling tube Dosing on, wherein the dosing along a longitudinal axis of the filling tube is movable and wherein the dosing a closing head for closing a has lower outlet of the filling tube.
  • the closing head has according to the invention at least one closing area with a cylindrical lateral surface on.
  • the filling tube is hollow-cylindrical at least in the outlet region educated.
  • this design allows a self-cleaning of the outlet of the Filling tube. As a result, deposits can be removed, the closing quality remains obtained and ensures the dosing accuracy. Nevertheless, funds that increase the Self - cleaning can be used, the space requirement of the device in the filling of the Bag not. This is the case in particular when the metering element is used as a metering screw with a shaft and at least one screw winding running along it is trained.
  • the at least one closing region follows above in a relatively tapered upper portion over it. This will be a achieved even distribution of the bulk material during filling into the bag. moreover this upper taper facilitates retraction of the closing head into the filling tube, when the metering element is raised to close the outlet opening.
  • the at least one cylindrically shaped closing region also down into a tapered lower area above. This claimed by the Closing head a minimal space within the bag to be filled and immersion the closing head in the bag is facilitated.
  • the device has an air conditioning unit for cooling or heating the bulk material.
  • this increases the Accuracy of the dosage, since with the temperature, for example, the flowability and change the adhesion properties.
  • the inventive device is suitable for all bulk materials, but in particular for bulk materials with relatively small grain sizes of a few hundredths to a few tenths of a millimeter in diameter.
  • the device is for Bottling of bulk material used in the medical and food sector, for example for filling powdered medicines, sugar or spices.
  • the bulk material is preferably in bags, in particular of vertically generated Tubular bags or sachets, packaged. But there are others Use packaging types.
  • a device V according to the invention is in a state during the Filling a bag B1 shown.
  • the device V has a filling tube 1, which is designed substantially hollow cylindrical.
  • the entire stuffing tube 1 designed as a hollow cylinder.
  • at least one lower outlet region 14 is formed as a hollow cylinder.
  • the filling tube 1 is aligned vertically. This matches with the preferred arrangement.
  • the filling tube 1 has an upper inlet opening 10 and a lower outlet opening 11 opens onto the inlet opening 10, as in FIG. 5 is visible in a hopper 12. Through this hopper 12 can be pourable Fill material into the filling tube 1.
  • the tube H is along the lower outlet opening 11 and this enclosing deducted.
  • the desired lengthening of a filled bag B2 becomes achieved by means of sealing jaws S, which in the example shown here in the vertical direction are movable and remove the individual bags after filling. Your movement is shown in Figure 2 with a double arrow.
  • a metering element 2 here a metering screw arranged. It is along a longitudinal axis L of the filling tube 1 movable and about its own longitudinal axis rotatable.
  • a metering element 2 here a metering screw arranged. It is along a longitudinal axis L of the filling tube 1 movable and about its own longitudinal axis rotatable.
  • a lifting and rotation unit 3 comprises a rotary drive 32, e.g. a servomotor, a first associated with it and a second gear 30, 31 and a linear actuator 33, e.g. a servo motor, which acts on a cantilevered lever 34.
  • the metering element 2 has at its lower, the outlet opening adjacent end a closing head 22. This protrudes in the filling position, i. in the position in which the outlet opening 11 is released, on the lower side of the filling tube 1 from this out. This position is shown in Figures 1a and 3a.
  • the closing head 22 has at least one, in this case exactly one closing area 23 a cylindrical surface, i. a cylindrical outer surface, on.
  • this closing area is circular-cylindrical and extends over a length of 0.2 to 10 mm with a diameter of the closing head 22 at this point from 5 to 60 mm.
  • the closing area 23 can be used as a sealing flange trained and provided with a sealing ring or other sealing element be.
  • the sealing flange can, but does not necessarily have to be designed as a hollow cylinder Exhaust area 14 of the filling tube 1 abut.
  • the closing head 22 tapers above the closing area 23, i. to the interior of the filling tube 1, to a neck 24.
  • this tapered portion or neck 24 is frusto-conical.
  • the upper tapered portion 24 preferably has a diameter which is at most half the diameter of the cylindrical Closing area 23 is.
  • the closing head 22 also tapers below the closing area 23, i.e. outwardly.
  • a conical shape is preferred, for example a Truncated cone or a cone.
  • the metering element 2 is a metering screw. It has a shaft 20 and at least one spiral over at least approximately the entire length of the shaft 20 extending worm winding 21st
  • the screw 2 has an outer at least in its lower region Diameter up, measured to the outer edge of the Schneckenwindung, which at least approximately the same size or only a few percent smaller than the outer one Diameter of the closing area 23.
  • the diameter of the shaft 24 corresponds preferably at least in the lower region of the smallest diameter of the upper tapered area 24.
  • metering element 21 for example, have a shaft at the bottom, the outlet opening 11 facing region of the shaft protruding flange is arranged, which the distance between the shaft and inner wall of the filling tube 1 at least almost bridged.
  • this flange preferably extends only over one Part of the outer circumference of the shaft 20.
  • the flange may be on the shaft 20 or above the closing area 23 may be arranged on the closing head 22.
  • the metering element 2 rotates while the bulk material is filled into the bag B1. Thanks to the tapered upper section 24 the bulk material is evenly distributed, with the bulk material in both corner areas of the bag (see Figures 1b and 3b) hurls.
  • Tubular bag B1 When lowering the metering element 2 again in the next following to be filled Tubular bag B1 facilitates the lower tapered portion 25 introduction to the Bag B1. Furthermore, the lower outlet area 14 at the same time of any Bulk deposits, which have been attached to the inner wall of the filling tube 1 could, cleaned. This is mainly due to the lower part of the screw winding 21 or in the case of a flange achieved by this.
  • This self-cleaning can also be achieved by other wave-projecting means of self-cleaning, for example, by the closing head two or more arranged above each other cylindrical Has areas.
  • FIG. 5 shows a further aspect of the device according to the invention, which could also be used without the cylindrical closing head 23.
  • the filling tube 1 is here provided with at least one air conditioning duct 5, which in the Tube 1 located bulk material cools or warms.
  • a cooling in particular a water cooling, is preferred.
  • the air-conditioning duct 5 can be designed differently. He can Spirally wrap around the tube 1, in several sub-channels radially or axially to the pipe 1 run or be formed as shown here as an annular gap, which extends at least approximately over the entire length of the filling tube 1. In the latter Case, an outer with respect to the filling tube 1 coaxial cooling tube can be used.
  • the filling tube itself can also be double-walled, as shown here.
  • the temperature influence of the bulk material can preferably be achieved by water, which is passed through the air conditioning duct 5. This is in the range of an upper Flange means 4 of the filling tube 1, a feed channel 6 and a corresponding discharge channel 7 present, which are both connected to the air conditioning duct 5.
  • the inventive device thus allows a fast and well-defined Closing the outlet opening and offers self-cleaning when opening.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Supply Of Fluid Materials To The Packaging Location (AREA)

Abstract

Device for decanting bulk material comprises a dosing element having a closing head (22) with a closing region (23) and a filling pipe (1) having a hollow cylinder shape in an outlet region. Preferred Features: The dosing element is a dosing screw with a shaft (20) and a screw winding (21) running along the shaft. The closing head tapers on both sides of the closing region. The dosing element is able to rotate.

Description

Technisches GebietTechnical area

Die Erfindung betrifft eine Vorrichtung zum dosierten Abfüllen von Schüttgut gemäss Oberbegriff des Patentanspruchs 1.The invention relates to a device for the metered filling of bulk material according to Preamble of claim 1.

Stand der TechnikState of the art

Derartige Vorrichtungen weisen ein vertikal verlaufendes Füllrohr mit einer darin in axialer Richtung bewegbaren und rotierbaren Dosierschnecke auf. In Beutel oder anderweitige Behälter abzufüllendes Schüttgut wird oben in das Füllrohr eingefüllt und mittels der Dosierschnecke in dosierten Portionen am unteren Ende des Füllrohrs in die Beutel gefördert. Zur Unterbrechung des Flusses und Portionierung lässt sich das untere Ende des Füllrohrs mit einem Verschlussmittel verschliessen.Such devices have a vertically extending filling tube with a therein axial direction movable and rotatable dosing on. In bags or otherwise Container to be filled bulk material is poured into the top of the filling tube and by means of the dosing screw in metered portions at the lower end of the filling tube in the Bag promoted. To interrupt the flow and portioning can be the lower Close the end of the filling tube with a closing agent.

Es sind Vorrichtungen bekannt, bei welchen ein von der Dosierschnecke unabhängiges Verschlussmittel verwendet wird. Beispiele hierfür sind in EP-A-0'201'777, CH-A-690'572 und DE-A-195'19'682 gegeben. Diese weisen den Nachteil auf, dass die Verschlussmittel eine separate Steuerung benötigen und zudem im Auslassbereich des Füllrohrs Platz beanspruchen.Devices are known in which an independent from the metering screw Closure agent is used. Examples of these are disclosed in EP-A-0'201'777, CH-A-690'572 and DE-A-195'19'682. These have the disadvantage that the closure means need a separate control and also in the outlet of the filling tube Take up space.

In anderen Vorrichtungen ist das Verschlussmittel integraler Bestandteil der Dosierschnecke. So offenbart DE-A-102'21'567 eine Vorrichtung, bei welcher die Dosierschnecke einen kegelstumpfförmigen Schliesskopf mit einer Dichtung aufweist. Im angehobenen Zustand der Dosierschnecke liegt diese Dichtung an der unteren Stirnfläche des Füllrohrs an.In other devices, the closure means is an integral part of the metering screw. Thus, DE-A-102'21'567 discloses a device in which the metering screw a frusto-conical closing head with a seal. Im raised Condition of the metering screw, this seal is located on the lower end face of the filling tube.

EP-A-0'967'149 zeigt eine Dosierschnecke mit einem doppelkegelförmigen Schliesskopf, wobei dieser im abgesenkten Zustand an einer konischen Innenfläche des Füllrohrs aufliegt und somit die Auslassöffnung verschliesst.EP-A-0'967'149 shows a metering screw with a biconical closing head, this being in the lowered state on a conical inner surface of the filling tube rests and thus closes the outlet opening.

Auch bei EP-A-0'808'795 liegt der kegelförmige Schliesskopf im abgesenkten Zustand im Bereich der Auslassöffnung des Füllrohrs an dessen Innenfläche auf. Bei US-A-3'486'664 liegt er hingegen im angehobenen Zustand an.Also in EP-A-0'808'795, the conical closing head is in the lowered state in the region of the outlet opening of the filling tube on the inner surface thereof. US-A-3'486'664 he is on the other hand in the raised state.

Bei diesen Vorrichtungen neigt das Schüttgut dazu, sich im Auslassbereich an der Innenwand des Füllrohrs abzulagern und zu verklumpen. Derartige Verklumpungen stören jedoch den weiteren Fluss und somit auch die genaue Dosierung. Die Ablagerungen verhindern zudem eine vollständige Schliessung der Auslassöffnung.In these devices, the bulk material tends to be in the outlet area on the inner wall depositing and clumping the filling tube. Such clumping disturb However, the further flow and thus the exact dosage. The deposits also prevent complete closure of the outlet opening.

EP-A-0'514'770 offenbart eine Vorrichtung zur Förderung von Pasten, wobei die Vorrichtung eine Förderschnecke aufweist, welche an ihrem unteren Ende in einem konusförmigen Lager gelagert ist.EP-A-0'514'770 discloses a device for conveying pastes, wherein the device a screw conveyor, which at its lower end in a cone-shaped Warehouse is stored.

Darstellung der ErfindungPresentation of the invention

Es ist eine Aufgabe der Erfindung, eine Vorrichtung zu schaffen, welche die oben genannten Nachteile behebt.It is an object of the invention to provide a device which the above Disadvantages remedies.

Diese Aufgabe löst eine Vorrichtung mit den Merkmalen des Patentanspruchs 1.This object is achieved by a device having the features of patent claim 1.

Die erfindungsgemässe Vorrichtung weist ein Füllrohr und ein im Füllrohr rotierbares Dosierelement auf, wobei das Dosierelement entlang einer Längsachse des Füllrohrs bewegbar ist und wobei das Dosierelement einen Schliesskopf zum Verschluss eines unteren Auslassbereichs des Füllrohrs aufweist. Der Schliesskopf weist dabei erfindungsgemäss mindestens einen Schliessbereich mit einer zylindrischen Mantelfläche auf. Als Gegenstück dazu ist das Füllrohr mindestens im Auslassbereich hohlzylinderförmig ausgebildet.The inventive device has a filling tube and a rotatable in the filling tube Dosing on, wherein the dosing along a longitudinal axis of the filling tube is movable and wherein the dosing a closing head for closing a has lower outlet of the filling tube. The closing head has according to the invention at least one closing area with a cylindrical lateral surface on. As a counterpart to this, the filling tube is hollow-cylindrical at least in the outlet region educated.

Diese Ausbildung des Schliesskopfes und des Auslassbereichs ermöglicht eine schnelle Schliessung der Auslassöffnung, ohne dass grosse Distanzen überwunden werden müssen. Zudem ist der Platzbedarf äusserst gering.This design of the closing head and the outlet allows a fast Closing the outlet opening without having to overcome large distances. In addition, the space requirement is extremely low.

Des weiteren erlaubt diese Ausbildung eine Selbstreinigung des Auslassbereichs des Füllrohrs. Dadurch lassen sich Ablagerungen entfernen, die Schliessqualität bleibt erhalten und die Dosiergenauigkeit gewährleistet. Trotzdem erhöhen Mittel, welche zur Selbstreinigung verwendet werden, den Platzbedarf der Vorrichtung im Füllbereich der Beutel nicht. Dies ist insbesondere dann der Fall, wenn das Dosierelement als Dosierschnecke mit einer Welle und mindestens einer entlang dieser verlaufenden Schneckenwindung ausgebildet ist.Furthermore, this design allows a self-cleaning of the outlet of the Filling tube. As a result, deposits can be removed, the closing quality remains obtained and ensures the dosing accuracy. Nevertheless, funds that increase the Self - cleaning can be used, the space requirement of the device in the filling of the Bag not. This is the case in particular when the metering element is used as a metering screw with a shaft and at least one screw winding running along it is trained.

In einer bevorzugten Ausführungsform geht der mindestens eine Schliessbereich nach oben in einen relativ zu ihm verjüngten oberen Bereich über. Dadurch wird eine gleichmässige Verteilung des Schüttguts beim Abfüllen in den Beutel erzielt. Zudem erleichtert diese obere Verjüngung das Einfahren des Schliesskopfes in das Füllrohr, wenn das Dosierelement zum verschliessen der Auslassöffnung angehoben wird.In a preferred embodiment, the at least one closing region follows above in a relatively tapered upper portion over it. This will be a achieved even distribution of the bulk material during filling into the bag. moreover this upper taper facilitates retraction of the closing head into the filling tube, when the metering element is raised to close the outlet opening.

Vorzugsweise geht der mindestens eine zylinderförmig ausgebildete Schliessbereich auch nach unten in einen verjüngten unteren Bereich über. Dadurch beansprucht der Schliesskopf einen minimalen Raum innerhalb des zu befüllenden Beutels und das Eintauchen des Schliesskopfes in den Beutel wird erleichtert.Preferably, the at least one cylindrically shaped closing region also down into a tapered lower area above. This claimed by the Closing head a minimal space within the bag to be filled and immersion the closing head in the bag is facilitated.

In einer bevorzugten Ausführungsform verfügt die Vorrichtung über eine Klimaeinheit zum Kühlen bzw. Wärmen des Schüttguts. Je nach Art des Schüttguts erhöht dies die Genauigkeit der Dosierung, da sich mit der Temperatur beispielsweise die Rieselfähigkeit und die Adhäsionseigenschaften ändern.In a preferred embodiment, the device has an air conditioning unit for cooling or heating the bulk material. Depending on the type of bulk material, this increases the Accuracy of the dosage, since with the temperature, for example, the flowability and change the adhesion properties.

Weitere vorteilhafte Ausführungsformen gehen aus den abhängigen Patentansprüchen hervor.Further advantageous embodiments will become apparent from the dependent claims out.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Im folgenden wird der Erfindungsgegenstand anhand eines bevorzugten Ausführungsbeispiels, welches in den beiliegenden Zeichnungen dargestellt ist, erläutert. Es zeigen:

Figur 1a
eine schematische Darstellung einer erfindungsgemässen Vorrichtung im abgesenkten Zustand des Dosierelements von einer ersten Seite;
Figur 1b
einen Schnitt entlang B-B gemäss Figur 1a;
Figur 2
die Vorrichtung gemäss Figur 1 a mit angehobenem Dosierelement;
Figur 3a
die Vorrichtung gemäss Figur 1a mit abgesenktem Dosierelement von einer zweiten Seite;
Figur 3b
einen Schnitt entlang A-A gemäss Figur 3a;
Figur 4
die Vorrichtung gemäss Figur 3a mit angehobenem Dosierelement und
Figur 5
einen Längsschnitt durch die Vorrichtung gemäss Figur 1 a.
In the following the subject invention will be explained with reference to a preferred embodiment, which is illustrated in the accompanying drawings. Show it:
FIG. 1a
a schematic representation of an inventive device in the lowered state of the metering element from a first side;
FIG. 1b
a section along BB according to Figure 1a;
FIG. 2
the device according to Figure 1 with a raised metering element;
FIG. 3a
the device according to Figure 1a with lowered dosing from a second side;
FIG. 3b
a section along AA according to Figure 3a;
FIG. 4
the device according to Figure 3a with raised metering and
FIG. 5
a longitudinal section through the device according to Figure 1 a.

Wege zur Ausführung der ErfindungWays to carry out the invention

Die erfindungsgemässe Vorrichtung eignet sich für alle Schüttgüter, insbesondere jedoch für Schüttgüter mit relativ kleinen Korngrössen von einigen wenigen Hundertstel bis einigen Zehntel Millimeter Durchmesser. Vorzugsweise wird die Vorrichtung zum Abfüllen von Schüttgut im Medizinal- und im Lebensmittelbereich eingesetzt, beispielsweise zum Abfüllen von pulverförmigen Medikamenten, Zucker oder Gewürzen. Das Schüttgut wird vorzugsweise in Beutel, insbesondere von vertikal erzeugten Schlauchbeuteln oder Siegelrandbeuteln, abgepackt. Es lassen sich jedoch auch andere Verpackungstypen einsetzen.The inventive device is suitable for all bulk materials, but in particular for bulk materials with relatively small grain sizes of a few hundredths to a few tenths of a millimeter in diameter. Preferably, the device is for Bottling of bulk material used in the medical and food sector, for example for filling powdered medicines, sugar or spices. The bulk material is preferably in bags, in particular of vertically generated Tubular bags or sachets, packaged. But there are others Use packaging types.

In Figur 1a ist eine erfindungsgemässe Vorrichtung V in einem Zustand während des Befüllens eines Beutels B1 dargestellt. Die Vorrichtung V weist ein Füllrohr 1 auf, welches im wesentlichen hohlzylinderförmig ausgestaltet ist. Hier ist das gesamte Füllrohr 1 als Hohlzylinder gestaltet. Andere Formen sind möglich, wobei jedoch mindestens ein unterer Auslassbereich 14 hohlzylinderförmig ausgebildet ist.In FIG. 1 a, a device V according to the invention is in a state during the Filling a bag B1 shown. The device V has a filling tube 1, which is designed substantially hollow cylindrical. Here is the entire stuffing tube 1 designed as a hollow cylinder. Other forms are possible, but at least one lower outlet region 14 is formed as a hollow cylinder.

Im hier dargestellten Beispiel ist das Füllrohr 1 vertikal stehend ausgerichtet. Dies entspricht der bevorzugten Anordnung. Das Füllrohr 1 weist eine obere Einlassöffnung 10 und eine untere Auslassöffnung 11 auf Die Einlassöffnung 10 mündet, wie in Figur 5 sichtbar ist, in einen Einfülltrichter 12. Durch diesen Einfülltrichter 12 lässt sich schüttfähiges Material in das Füllrohr 1 einfüllen.In the example shown here, the filling tube 1 is aligned vertically. This matches with the preferred arrangement. The filling tube 1 has an upper inlet opening 10 and a lower outlet opening 11 opens onto the inlet opening 10, as in FIG. 5 is visible in a hopper 12. Through this hopper 12 can be pourable Fill material into the filling tube 1.

Im dargestellten Beispiel wird das Schüttgut in vertikal erzeugte Schlauchbeutel B1, B2 abgefüllt. Der Schlauch H wird entlang der unteren Auslassöffnung 11 und diese umschliessend abgezogen. Die gewünschte Ablängung eines gefüllten Beutels B2 wird mittels Siegelbacken S erzielt, welche im hier dargestellten Beispiel in vertikaler Richtung bewegbar sind und die einzelnen Beutel nach dem Befüllen abziehen. Ihre Bewegung ist in Figur 2 mit einem Doppelpfeil dargestellt.In the example shown, the bulk material in vertically produced tubular bag B1, B2 bottled. The tube H is along the lower outlet opening 11 and this enclosing deducted. The desired lengthening of a filled bag B2 becomes achieved by means of sealing jaws S, which in the example shown here in the vertical direction are movable and remove the individual bags after filling. Your movement is shown in Figure 2 with a double arrow.

Im Füllrohr 1 ist ein Dosierelement 2, hier eine Dosierschnecke, angeordnet. Es ist entlang einer Längsachse L des Füllrohrs 1 bewegbar und um seine eigene Längsachse drehbar. Es lassen sich jedoch auch anders geformte Dosierelemente und insbesondere auch nicht rotierende Dosierelemente verwenden.In the filling tube 1 is a metering element 2, here a metering screw arranged. It is along a longitudinal axis L of the filling tube 1 movable and about its own longitudinal axis rotatable. However, it is also possible differently shaped metering and in particular also use non-rotating dosing elements.

Die Längs- und Rotationsbewegung des Dosierelements 21 lässt sich auf verschiedene Arten erreichen. Dem Fachmann sind hierzu hinlänglich Mittel bekannt. In den Figuren 1a und 2 ist deshalb lediglich schematisch eine Hub- und Rotationseinheit 3 dargestellt. Sie umfasst einen Rotationsantrieb 32, z.B. ein Servomotor, ein damit verbundenes erstes und eine zweites Zahnrad 30, 31 und einen Hubantrieb 33, z.B. ein Servomotor, welcher auf einen einseitig gelagerten Schwenkhebel 34 wirkt. The longitudinal and rotational movement of the metering element 21 can be different Reach species. The person skilled in the art is well-known for this purpose. In the figures 1a and 2, therefore, only schematically a lifting and rotation unit 3 is shown. It comprises a rotary drive 32, e.g. a servomotor, a first associated with it and a second gear 30, 31 and a linear actuator 33, e.g. a servo motor, which acts on a cantilevered lever 34.

Das Dosierelement 2 weist an seinem unteren, der Auslassöffnung benachbarten Ende einen Schliesskopf 22 auf. Dieser ragt in der Befüllposition, d.h. in der Position, in welcher die Auslassöffnung 11 freigegeben ist, auf der unteren Seite des Füllrohrs 1 aus diesem heraus. Diese Position ist in den Figuren 1a und 3 a dargestellt.The metering element 2 has at its lower, the outlet opening adjacent end a closing head 22. This protrudes in the filling position, i. in the position in which the outlet opening 11 is released, on the lower side of the filling tube 1 from this out. This position is shown in Figures 1a and 3a.

Der Schliesskopf 22 weist mindestens einen, hier genau einen Schliessbereich 23 mit einer zylinderförmigen Mantelfläche, d.h. einer zylinderförmigen äusseren Oberfläche, auf. Vorzugsweise ist dieser Schliessbereich kreiszylinderförmig ausgebildet und erstreckt sich über eine Länge von 0.2 bis 10 mm bei einem Durchmesser des Schliesskopfes 22 an dieser Stelle von 5 bis 60 mm. Der Schliessbereich 23 kann als Dichtflansch ausgebildet und mit einem Dichtring oder einem anderen Dichtelement versehen sein. Der Dichtflansch kann, muss jedoch nicht zwingend am hohlzylinderförmig ausgebildeten Auslassbereich 14 des Füllrohrs 1 anliegen.The closing head 22 has at least one, in this case exactly one closing area 23 a cylindrical surface, i. a cylindrical outer surface, on. Preferably, this closing area is circular-cylindrical and extends over a length of 0.2 to 10 mm with a diameter of the closing head 22 at this point from 5 to 60 mm. The closing area 23 can be used as a sealing flange trained and provided with a sealing ring or other sealing element be. The sealing flange can, but does not necessarily have to be designed as a hollow cylinder Exhaust area 14 of the filling tube 1 abut.

Vorzugsweise verjüngt sich der Schliesskopf 22 oberhalb des Schliessbereichs 23, d.h. zum Innern des Füllrohrs 1 hin, zu einem Hals 24. Im hier dargestellten Beispiel ist dieser verjüngte Bereich oder Hals 24 kegelstumpfförmig ausgebildet. Andere Formen, beispielsweise eine konkav oder konvex ausgebildete Mantelfläche des verjüngten Bereichs 24, sind jedoch auch möglich. Der obere verjüngte Bereich 24 weist vorzugsweise einen Durchmesser auf, welcher maximal die Hälfte des Durchmessers des zylinderförmigen Schliessbereichs 23 beträgt.Preferably, the closing head 22 tapers above the closing area 23, i. to the interior of the filling tube 1, to a neck 24. In the example shown here is this tapered portion or neck 24 is frusto-conical. Other forms, For example, a concave or convex lateral surface of the tapered region 24, but are also possible. The upper tapered portion 24 preferably has a diameter which is at most half the diameter of the cylindrical Closing area 23 is.

Vorzugsweise verjüngt sich der Schliesskopf 22 auch unterhalb des Schliessbereichs 23, d.h. nach aussen hin. Auch hier ist eine konische Form bevorzugt, beispielsweise ein Kegelstumpf oder ein Kegel. Es sind jedoch auch andere Formen, beispielsweise konvexe oder konkave Mantelflächen, nicht ausgeschlossen.Preferably, the closing head 22 also tapers below the closing area 23, i.e. outwardly. Again, a conical shape is preferred, for example a Truncated cone or a cone. However, there are other shapes, such as convex or concave lateral surfaces, not excluded.

In einer bevorzugten Ausführungsform ist das Dosierelement 2 eine Dosierschnecke. Sie verfügt über eine Welle 20 und mindestens eine sich spiralförmig über mindestens annähernd die gesamte Länge der Welle 20 erstreckende Schneckenwindung 21. Vorzugsweise weist die Schnecke 2 mindestens in ihrem unteren Bereich einen äusseren Durchmesser auf, gemessen bis zur äusseren Kante der Schneckenwindung, welcher mindestens annähernd gleich gross oder nur um wenige Prozente kleiner ist als der äussere Durchmesser des Schliessbereichs 23. Der Durchmesser der Welle 24 entspricht vorzugsweise zumindest im unteren Bereich dem kleinsten Durchmesser des oberen verjüngten Bereichs 24.In a preferred embodiment, the metering element 2 is a metering screw. It has a shaft 20 and at least one spiral over at least approximately the entire length of the shaft 20 extending worm winding 21st Preferably, the screw 2 has an outer at least in its lower region Diameter up, measured to the outer edge of the Schneckenwindung, which at least approximately the same size or only a few percent smaller than the outer one Diameter of the closing area 23. The diameter of the shaft 24 corresponds preferably at least in the lower region of the smallest diameter of the upper tapered area 24.

Andere Formen von Dosierelementen lassen sich jedoch auch verwenden. So kann das Dosierelement 21 beispielsweise eine Welle aufweisen, an deren unterem, der Auslassöffnung 11 zugewandten Bereich ein der Welle vorstehender Flansch angeordnet ist, welcher den Abstand zwischen Welle und Innenwandung des Füllrohrs 1 mindestens annähernd überbrückt. Dieser Flansch erstreckt sich jedoch vorzugsweise nur über einen Teil des äusseren Umfangs der Welle 20. Der Flansch kann an der Welle 20 oder oberhalb des Schliessbereichs 23 am Schliesskopf 22 angeordnet sein.However, other forms of metering elements can also be used. That's how it works Dosing element 21, for example, have a shaft at the bottom, the outlet opening 11 facing region of the shaft protruding flange is arranged, which the distance between the shaft and inner wall of the filling tube 1 at least almost bridged. However, this flange preferably extends only over one Part of the outer circumference of the shaft 20. The flange may be on the shaft 20 or above the closing area 23 may be arranged on the closing head 22.

In der Position gemäss den Figuren 1a und 3a dreht sich das Dosierelement 2, während das Schüttgut in den Beutel B1 abgefüllt wird. Dank des verjüngten oberen Bereichs 24 wird das Schüttgut gleichmässig verteilt, wobei es das Schüttgut in beide Eckbereiche des Beutels (siehe Figuren 1b und 3b) schleudert.In the position according to Figures 1a and 3a, the metering element 2 rotates while the bulk material is filled into the bag B1. Thanks to the tapered upper section 24 the bulk material is evenly distributed, with the bulk material in both corner areas of the bag (see Figures 1b and 3b) hurls.

Ist die gewünschte Dosierung erreicht, wird die Rotationsbewegung gestoppt und das Dosierelement 2 angehoben. Der verjüngte obere Bereich 24 erleichtert dabei die Anhebung. Die Hub- und Rotationsbewegungen werden somit intermittierend ausgeführt. Die angehobene Position ist in den Figuren 2 und 4 dargestellt. Durch Anlage des zylinderförmigen Schliessbereichs 23 an die zylinderförmige Innenwandung 13 des Füllrohrs 1 im Auslassbereich 14 ist ein Unterbruch des Schüttgutstroms gewährleistet. Die Bewegung kann aufgrund des kurzen Weges und ihrer Einfachheit relativ schnell ausgeführt werden, so dass ein gezieltes Unterbrechen und somit Dosieren ermöglicht ist und der Abfüllvorgang lediglich während einer minimalen Zeitspanne unterbrochen werden muss. Dies optimiert die Leistungsfähigkeit der Vorrichtung und ihre Produktivität.When the desired dosage is reached, the rotation is stopped and the Dosing 2 raised. The tapered upper portion 24 facilitates the lifting. The lifting and rotating movements are thus carried out intermittently. The raised position is shown in FIGS. 2 and 4. By plant of the cylindrical Closing area 23 to the cylindrical inner wall 13 of the filling tube 1 in the outlet region 14 an interruption of the bulk material flow is ensured. The movement can be done relatively quickly due to the short path and its simplicity be so that a targeted interruption and thus dosing is possible and the filling process is interrupted only for a minimum period of time got to. This optimizes the performance of the device and its productivity.

Beim erneuten Absenken des Dosierelements 2 in den nächstfolgenden zu befüllenden Schlauchbeutel B1 erleichtert der untere verjüngte Bereich 25 die Einführung in den Beutel B1. Des weiteren wird der untere Auslassbereich 14 zugleich von allfälligen Schüttgutablagerungen, welche sich an der Innenwand des Füllrohrs 1 angesetzt haben könnten, gereinigt. Dies wird vor allem durch den unteren Bereich der Schneckenwindung 21 oder im Falle eines Flansches durch diesen erzielt. Diese Selbstreinigung kann auch durch andere der Welle vorstehende Mittel zur Selbstreinigung erzielt werden, beispielsweise indem der Schliesskopf zwei oder mehr über einander angeordnete zylinderförmige Bereiche aufweist.When lowering the metering element 2 again in the next following to be filled Tubular bag B1 facilitates the lower tapered portion 25 introduction to the Bag B1. Furthermore, the lower outlet area 14 at the same time of any Bulk deposits, which have been attached to the inner wall of the filling tube 1 could, cleaned. This is mainly due to the lower part of the screw winding 21 or in the case of a flange achieved by this. This self-cleaning can also be achieved by other wave-projecting means of self-cleaning, for example, by the closing head two or more arranged above each other cylindrical Has areas.

In Figur 5 ist ein weiterer Aspekt der erfindungsgemässen Vorrichtung dargestellt, welcher sich auch ohne den zylinderförmigen Schliesskopf 23 verwenden lassen könnte. Das Füllrohr 1 ist hier mit mindestens einem Klimakanal 5 versehen, welcher das im Rohr 1 befindliche Schüttgut kühlt bzw. wärmt. Eine Kühlung, insbesondere eine Wasserkühlung, ist bevorzugt. Der Klimakanal 5 kann verschieden ausgebildet sein. Er kann sich spiralförmig um das Rohr 1 wickeln, in mehreren Teilkanälen radial oder axial um das Rohr 1 verlaufen oder wie hier dargestellt als Ringspalt ausgebildet sein, welcher sich mindestens annähernd über die gesamte Länge des Füllrohrs 1 erstreckt. Im letzteren Fall kann ein äusseres bezüglich des Füllrohrs 1 koaxiales Kühlrohr verwendet werden. Das Füllrohr selber kann auch, wie hier dargestellt, doppelwandig ausgebildet sein.FIG. 5 shows a further aspect of the device according to the invention, which could also be used without the cylindrical closing head 23. The filling tube 1 is here provided with at least one air conditioning duct 5, which in the Tube 1 located bulk material cools or warms. A cooling, in particular a water cooling, is preferred. The air-conditioning duct 5 can be designed differently. He can Spirally wrap around the tube 1, in several sub-channels radially or axially to the pipe 1 run or be formed as shown here as an annular gap, which extends at least approximately over the entire length of the filling tube 1. In the latter Case, an outer with respect to the filling tube 1 coaxial cooling tube can be used. The filling tube itself can also be double-walled, as shown here.

Die Temperaturbeeinflussung des Schüttguts lässt sich vorzugsweise durch Wasser erzielen, welches durch den Klimakanal 5 geleitet wird. Hierzu ist im Bereich eines oberen Anflanschmittels 4 des Füllrohrs 1 ein Zuführkanal 6 und ein entsprechender Abführkanal 7 vorhanden, welche beide mit dem Klimakanal 5 verbunden sind.The temperature influence of the bulk material can preferably be achieved by water, which is passed through the air conditioning duct 5. This is in the range of an upper Flange means 4 of the filling tube 1, a feed channel 6 and a corresponding discharge channel 7 present, which are both connected to the air conditioning duct 5.

Die erfindungsgemässe Vorrichtung ermöglicht somit eine schnelle und wohldefinierte Schliessung der Auslassöffnung und bietet beim Öffnen eine Selbstreinigung. The inventive device thus allows a fast and well-defined Closing the outlet opening and offers self-cleaning when opening.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

VV
Vorrichtungcontraption
B1B1
zu befüllender Beutelto be filled bag
B2B2
befüllter Beutelfilled bag
SS
Siegelbackesealing jaw
11
Füllrohrfilling pipe
1010
Einlassöffnunginlet port
1111
Auslassöffnungoutlet
1212
Einfülltrichterhopper
1313
Innenwandunginner wall
1414
unterer Auslassbereichlower outlet area
22
Dosierschneckedosing screw
2020
Wellewave
2121
Schneckenwindungcochlea
2222
Schliesskopfclosing head
2323
Schliessbereichclosing region
2424
Verjüngter oberer BereichRejuvenated upper area
2525
Verjüngter unterer BereichTapered lower area
33
Hub- und RotationseinheitLifting and rotation unit
3030
Erstes ZahnradFirst gear
3131
Zweites ZahnradSecond gear
3232
Rotationsantriebrotary drive
3333
HubantriebLinear actuator
3434
Schwenkhebelpivoting lever
44
Anflanschmittelflanging
55
Klimakanalair channel
66
KlimamittelzufuhrkanalAir medium supply channel
77
KlimamittelabfuhrkanalAir agent discharge channel
AA
Längsachselongitudinal axis
HH
Schlauchtube

Claims (10)

Vorrichtung zum dosierten Abfüllen von Schüttgut, wobei die Vorrichtung ein Füllrohr (1) und ein darin angeordnetes Dosierelement (2) aufweist, wobei das Dosierelement (2) entlang einer Längsachse (A) des Füllrohrs (1) bewegbar ist und wobei das Dosierelement (2) einen Schliesskopf (22) zum Verschluss eines unteren Auslassbereichs (14) des Füllrohrs (1) aufweist, dadurch gekennzeichnet, dass der Schliesskopf (22) mindestens einen Schliessbereich (23) mit einer zylindrischen Mantelfläche aufweist und dass das Füllrohr (1) mindestens im Auslassbereich (14) hohlzylinderförmig ausgebildet ist.Apparatus for the metered filling of bulk material, the apparatus having a filling tube (1) and a metering element (2) arranged therein, wherein the metering element (2) is movable along a longitudinal axis (A) of the filling tube (1) and wherein the metering element (2 ) has a closing head (22) for closing a lower outlet region (14) of the filling tube (1), characterized in that the closing head (22) has at least one closing region (23) with a cylindrical lateral surface and in that the filling tube (1) at least in Outlet region (14) is formed hollow cylindrical. Vorrichtung nach Anspruch 1, wobei das Dosierelement (2) eine Dosierschnecke mit einer Welle (20) und mindestens einer entlang dieser Welle verlaufenden Schneckenwindung (21) ist.Apparatus according to claim 1, wherein the metering element (2) is a metering screw with a shaft (20) and at least one extending along this shaft Worm winding (21) is. Vorrichtung nach einem der Ansprüche 1 oder 2, wobei der mindestens eine Schliessbereich (23) nach oben in einen relativ zu ihm oberen verjüngten Bereich (24) übergeht.Device according to one of claims 1 or 2, wherein the at least one Closing area (23) upwards in a relative to him upper tapered area (24) passes. Vorrichtung nach Anspruch 3, wobei der obere verjüngte Bereich (24) kegelstumpfförmig ist oder eine konische oder konkav ausgebildete Mantelfläche aufweist.The device of claim 3, wherein the upper tapered region (24) is frusto-conical is or has a conical or concave lateral surface. Vorrichtung nach einem der Ansprüche 1 bis 4, wobei der mindestens eine Schliessbereich (23) als Dichtfläche ausgebildet ist und vorzugsweise mit einem Dichtelement versehen ist.Device according to one of claims 1 to 4, wherein the at least one Closing area (23) is designed as a sealing surface and preferably with a Is provided sealing element. Vorrichtung nach einem der Ansprüche 1 bis 5, wobei sich der Schliesskopf (22) auf beiden Seiten des mindestens einen Schliessbereichs (23) verjüngt.Device according to one of claims 1 to 5, wherein the closing head (22) tapered on both sides of the at least one closing area (23). Vorrichtung nach Anspruch 2, wobei die Welle (20) mindestens annähernd denselben Durchmesser aufweist wie der obere verjüngte Bereich (24) an seinem oberen Ende.Apparatus according to claim 2, wherein the shaft (20) is at least approximately the same Diameter as the upper tapered portion (24) at its upper The End. Vorrichtung nach einem der Ansprüche 1 bis 7, wobei das Dosierelement (2) rotierbar ist.Device according to one of claims 1 to 7, wherein the metering element (2) rotatable is. Vorrichtung nach einem der Ansprüche 1 bis 8, wobei das Füllrohr (1) mindestens einen Klimakanal (5), insbesondere für eine Wasserkühlung, aufweist.Device according to one of claims 1 to 8, wherein the filling tube (1) at least an air-conditioning duct (5), in particular for water cooling. Vorrichtung nach Anspruch 9, wobei der mindestens eine Klimakanal (5) das Dosierelement (2) umgibt und sich mindestens annähernd über die gesamte Länge des Füllrohrs (1) erstreckt.Apparatus according to claim 9, wherein the at least one air conditioning duct (5) the metering element (2) surrounds and extends at least approximately the entire length of the filling tube (1) extends.
EP05101280A 2004-04-01 2005-02-21 Apparatus for the dosed filling of bulk material. Active EP1582467B1 (en)

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GB2430665A (en) * 2005-09-29 2007-04-04 Bosch Gmbh Robert Metering unit with outlet sealing element
EP1783054A1 (en) * 2005-10-06 2007-05-09 S.S.T.-Schüttguttechnik GmbH Method of and device for the metered delivery of bulk material
WO2011051066A1 (en) * 2009-11-02 2011-05-05 Robert Bosch Gmbh Device for the metered filling of bulk material
CN102633001A (en) * 2012-05-02 2012-08-15 无锡市耐特机电一体化技术有限公司 Material bagging apparatus provided with stirring mechanism
EP1931952B1 (en) * 2005-10-03 2014-06-25 Mettler-Toledo AG Dosing device for powdery or pasty substances
IT201700045807A1 (en) * 2017-04-28 2017-07-28 Hero Europe S R L Device, dosage system for powdered, liquid, pasty or creamy products and dispensing machine comprising this device
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DE102020113955A1 (en) 2020-05-25 2021-11-25 Syntegon Technology Gmbh Device for mixing and metering substances and method for operating such a device
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Cited By (16)

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Publication number Priority date Publication date Assignee Title
GB2430665A (en) * 2005-09-29 2007-04-04 Bosch Gmbh Robert Metering unit with outlet sealing element
EP1931952B1 (en) * 2005-10-03 2014-06-25 Mettler-Toledo AG Dosing device for powdery or pasty substances
DE102005048176B4 (en) * 2005-10-06 2018-06-14 S.S.T.-Schüttguttechnik GmbH Dosing device with a delivery channel and dosing
EP1783054A1 (en) * 2005-10-06 2007-05-09 S.S.T.-Schüttguttechnik GmbH Method of and device for the metered delivery of bulk material
WO2011051066A1 (en) * 2009-11-02 2011-05-05 Robert Bosch Gmbh Device for the metered filling of bulk material
CN102596724A (en) * 2009-11-02 2012-07-18 罗伯特·博世有限公司 Device for the metered filling of bulk material
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CN102633001A (en) * 2012-05-02 2012-08-15 无锡市耐特机电一体化技术有限公司 Material bagging apparatus provided with stirring mechanism
US10450097B2 (en) 2014-10-15 2019-10-22 I.M.A. Industria Macchine Automatiche S.P.A. Device and method for feeding and dosing filter bags with infusion or extraction products
IT201700045807A1 (en) * 2017-04-28 2017-07-28 Hero Europe S R L Device, dosage system for powdered, liquid, pasty or creamy products and dispensing machine comprising this device
WO2018198147A1 (en) 2017-04-28 2018-11-01 Hero Europe S.R.L. Dosing device and dosing system for powdery, liquid, pasty or creamy products, and dispensing machine comprising such dosing devices or systems
US11820603B2 (en) 2019-02-11 2023-11-21 Gea Process Engineering Nv Feeder device for feeding a powder material
DE102020113955A1 (en) 2020-05-25 2021-11-25 Syntegon Technology Gmbh Device for mixing and metering substances and method for operating such a device
DE102020113955B4 (en) 2020-05-25 2022-06-23 Syntegon Technology Gmbh Device for mixing and dosing substances and method for operating such a device

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JP2005289517A (en) 2005-10-20
ATE371584T1 (en) 2007-09-15
JP4944385B2 (en) 2012-05-30
EP1582467B1 (en) 2007-08-29
ES2289651T3 (en) 2008-02-01

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