EP0344521A2 - Apparatus for dosing components of flowable granular solids to be mixed - Google Patents

Apparatus for dosing components of flowable granular solids to be mixed Download PDF

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Publication number
EP0344521A2
EP0344521A2 EP89108899A EP89108899A EP0344521A2 EP 0344521 A2 EP0344521 A2 EP 0344521A2 EP 89108899 A EP89108899 A EP 89108899A EP 89108899 A EP89108899 A EP 89108899A EP 0344521 A2 EP0344521 A2 EP 0344521A2
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EP
European Patent Office
Prior art keywords
weighing
container
components
containers
collecting container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89108899A
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German (de)
French (fr)
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EP0344521A3 (en
EP0344521B1 (en
Inventor
Ottmar Link
Rudolf Baumann
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AZO GmbH and Co
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AZO GmbH and Co
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Publication date
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Publication of EP0344521A2 publication Critical patent/EP0344521A2/en
Publication of EP0344521A3 publication Critical patent/EP0344521A3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/84—Mixing plants with mixing receptacles receiving material dispensed from several component receptacles, e.g. paint tins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71775—Feed mechanisms characterised by the means for feeding the components to the mixer using helical screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/881—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise by weighing, e.g. with automatic discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60—Mixing solids with solids

Definitions

  • the invention relates to a device for combining individual free-flowing material components of small weight to form a mixture with an exact formulation of the components, consisting of a number of storage containers corresponding to the number of components, a scale with weighing container assigned to each storage container and a weighing unit taking over the weighed components from the weighing containers and two or more mixers feeding conveyor.
  • the invention has for its object to develop the device mentioned in such a way that even with small and smallest batches within a recipe
  • the recipe can be exactly adhered to from a large number of components and can be produced in the shortest possible time and two or more mixers can be supplied by the device with possibly changing recipes.
  • the conveyor device has a mobile collecting container, the path of which extends over all weighing containers, and a drive control by means of which the traveling movements of the collecting container can be controlled in such a way that the collecting container reaches the weighing container in the order in which the target weight is reached and finally moves to a position for transferring the collected components to one of the mixers.
  • a collecting container which takes over the components from all weighing containers after the respective weighing process and delivers the collected components to the mixer after taking over the last weighed component.
  • the travel drive of the collecting container is controlled so that it moves to the individual weighing containers in the order in which the target weight is reached.
  • the component with the lowest weight is therefore taken over first, while at the same time the weighing of the other components is continued until the next component has reached the target weight and the corresponding weighing container is approached by the collection container.
  • the entire time for the longest weighing process is thus used to collect the weighed components during this period.
  • the collection container moves into a transfer position in which all of the components of a batch that have been picked up are delivered to one of the mixers.
  • the collection container is emptied in a very short time. During the movement in the over dispensing position and during emptying can already be weighed again, especially for a batch with a different recipe if necessary, in order to dispense the batch to another mixer after collecting these components.
  • the collecting container runs on a guide which extends below all weighing containers and can be moved by means of a positioning drive.
  • a pneumatic or hydraulic cylinder can be provided as the positioning drive, which has fixed positions on the individual weighing containers, with only the sequence of moving to the individual positions being changed depending on the target weight being reached on the individual weighing containers in accordance with the respectively desired recipe.
  • the weighing containers are preferably mounted such that they can be tilted and can be tilted from a weighing position for receiving the components from the storage containers by 180 degrees into an emptying position above the collecting container.
  • the tilting of the weighing container has the advantage that the emptying can be carried out quickly and without further aids, such as loosening devices or the like, and that a residue-free emptying of the weighing container is also possible, which ensures high formulation accuracy.
  • the weighing containers are arranged on an arm with a tilting drive which, when the target weight is reached and the collecting container is moved under, tilts the weighing container into the emptying position.
  • the tilt drive becomes the target weight-absorbing sensor, on the other hand controlled by a position detector of the collecting container.
  • each weighing container with its tilting arm is guided by a parallelogram linkage which is received by the balance. In this way, the tilting moment of the weighing container does not affect the weighing.
  • the weighing container can be equipped with a mechanical loosening device, e.g. B. a vibrating or tapping device, provided to also sticky products such. B. completely empty pigments that do not flow out by tilting alone.
  • a mechanical loosening device e.g. B. a vibrating or tapping device, provided to also sticky products such. B. completely empty pigments that do not flow out by tilting alone.
  • each storage container is assigned its own dosing screw, the drain above which is provided with a closure.
  • This training initially has the advantage that the individual components get from the storage container in the shortest possible way into the metering screw in order to be discharged into the weighing container by the latter.
  • the closure arranged at the outlet of the dosing screw can fulfill two functions. On the one hand, it can be actuated when the target weight has been reached on the corresponding weighing container, so that the material flow is suddenly interrupted. On the other hand, by closing the drain, the dosing screw can be placed under vacuum or overpressure together with the storage container, in order in this way, for example, to enable the storage containers to be filled by suction or pressure delivery. It is therefore also expedient to flange-mount the dosing screw directly onto the outlet of the storage container.
  • a collecting container for receiving incorrectly weighed components can be arranged in the path of movement of the collecting container in order to be able to separate out such an incorrect batch in the same working cycle.
  • each storage container 1 can be seen, which hold a larger supply of the individual components.
  • the storage containers 1 are connected via a line 2 to a vacuum blower 3 and each have a filter 4 in their upper area.
  • Each storage container 1 is further provided with a component inlet 5, by means of which it can be filled from a tank truck or the like by means of the vacuum blower 3.
  • a motor-driven metering screw 7 is flanged to the bottom 6 of each storage container, which is optionally also equipped with a loosening device, the outlet 8 of which can be closed by means of a closure 9, which is controlled pneumatically, for example.
  • a weighing container 10 is arranged, which sits on a rotatably mounted tilting arm 11 and can be tilted downwards by 180 degrees from the filling and weighing position shown in the drawing.
  • the weighing container 10 sits together with the tilting arm 11 in a parallelogram linkage 11 by means of which it is guided in parallel in order to keep the weighing cell 13 free of tilting moments.
  • a guide 14 is arranged below the weighing container 10, which extends over all weighing containers 10 and on which a collecting container 15 can be moved in accordance with the indicated directional arrows.
  • the collecting container 15 has a closable outlet 16. It is by means of a drive, not shown, for. B. a pneumatic or hydraulic cylinder, from weighing container to weighing container and to the transfer position shown in the drawing, in which it is located above a container 17, to which in turn a mixer is connected.
  • the collecting container 15 moves into the position of the weighing container 10 that first reaches the target weight, that is, in which the smallest amount is weighed. When the target weight is reached, the tilt drive of this weighing container is put into operation, so that the weighing container is emptied into the collecting container 15. The collecting container 15 then moves the individual weighing containers in the order in which the target weight is reached there. If the collecting container 15 has taken up the last component, which is usually the one with the greatest weight, it moves into the transfer position shown in the drawing and releases the collected components to the container 17 after opening the closure 16. The next recipe can already be weighed again while moving into the transfer position and transferring to the container 17.
  • the collecting container can of course also be used to feed two or more mixers, the recipes and the sequence of the collecting container 15 being controlled according to the need for the mixers. Enough volume of an individual If the weighing container does not extend for the total weight of a component to be weighed, the collecting container 15 last moves to this position, takes over the first filling of the weighing container and then the remainder missing for the target weight.
  • a collecting container can be provided along the guide 14 in a position corresponding to the container 17, in order to be able to empty the incorrect batch received by the collecting container 15 in the event of incorrect weighing, without disrupting the working cycle more than necessary.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
  • Basic Packing Technique (AREA)
  • Accessories For Mixers (AREA)

Abstract

A device for dosing individual flowable granular solids of low weight to a mixture in a precise formulation of the components consists of a number of stock vessels corresponding to the number of the components, one weigher with a weighing container associated with each stock vessel and a conveyor device which transfers the weighed components from the weighing containers and feeds them to two or more mixers. To allow weighing precisely in accordance with the formulation in the shortest possible time in automated operation, it is provided that the conveyor device has a movable receiver with a trajectory across all the weighing containers and a drive control, by means of which the movements of the receiver can be controlled in such a way that the receiver reaches the weighing containers in the order in which the desired weight is reached, and finally moves up to a position for transferring the collected components to one of the mixers.

Description

Die Erfindung betrifft eine Vorrichtung zum Zusammenführen einzelner rieselfähiger Materialkomponenten kleinen Gewich­tes zu einer Mischung mit genauer Rezeptur der Komponenten, bestehend aus einer der Anzahl der Komponenten entsprechen­den Anzahl von Vorratsbehältern, je einer jedem Vorrats­behälter zugeordneten Waage mit Wiegebehälter und einer die abgewogenen Komponenten aus den Wiegebehältern übernehmenden und zwei oder mehr Mischern zuführenden Fördereinrichtung.The invention relates to a device for combining individual free-flowing material components of small weight to form a mixture with an exact formulation of the components, consisting of a number of storage containers corresponding to the number of components, a scale with weighing container assigned to each storage container and a weighing unit taking over the weighed components from the weighing containers and two or more mixers feeding conveyor.

In vielen Bereichen der Technik tritt das Problem auf, Mischungen aus einer Vielzahl von Schüttgut-Komponenten zu bilden. Dabei sind die einzelnen Komponenten zu ver­wiegen und entsprechend der Rezeptur zu der Mischung zu­sammenzuführen. Dabei kommt es insbesondere auf eine rezep­turgetreue Verwiegung der Komponenten an. Je kleiner das Gewicht der einzelnen Komponente innerhalb der gesamten Rezeptur ist, um so schwieriger läßt sich das Zusammen­führen der Komponenten automatisieren. Weiterhin ist von großer Bedeutung die Arbeitsgeschwindigkeit solcher Ver­wiegeanlagen.In many areas of technology, the problem arises of forming mixtures from a large number of bulk material components. The individual components must be weighed and combined into the mixture according to the recipe. It is particularly important to weigh the components according to the recipe. The smaller the weight of the individual component within the entire recipe, the more difficult it is to automate the merging of the components. Furthermore from of great importance is the working speed of such weighing systems.

Es ist bekannt (DE-PS 972 193, US-PS 3 058 622), jedem Vorratsbehälter einen eigenen Wiegebehälter mit Waage zu­zuordnen, um auf diese Weise alle Komponenten gleichzeitig verwiegen zu können und nicht nacheinander im Additions­verfahren verwiegen zu müssen. Bei diesen bekannten Vor­richtungen ist eine der Anzahl der Komponenten entsprechen­de Anzahl von Vorratsbehältern vorgesehen, deren Ablauf unmittelbar in je einen Wiegebehälter mündet. Unterhalb sämtlicher Wiegebehälter ist eine Förderschnecke angeordnet, in die die abgewogenen Komponenten abgegeben werden. Die Förderschnecke transportiert die Komponenten dann zu einem Mischer. Bei dieser Einrichtung muß die Förderschnecke so lange laufen, bis sichergestellt ist, daß innerhalb der Fördereinrichtung keine Materialreste mehr vorhanden sind, anderenfalls die Rezeptur nicht exakt stimmen bzw. die nachfolgende Rezeptur verfälscht würde. Dies setzt also voraus, daß die Förderschnecke nach Abschluß des letzten Wiegevorgangs noch einen Nachlauf hat, der im ungünstigsten Fall der längsten Wegstrecke, den eine ein­zelne Komponente vom Wiegebehälter bis zum Mischer zurück­zulegen hat, entspricht. Hinzu kommt, daß Förderschnecken insbesondere bei feinpulverigem Material und geringer Menge der einzelnen Komponenten nicht einwandfrei leerlaufen und Restmengen in der Förderschnecke verbleiben. Von Nach­teil ist ferner, daß mit der bekannten Vorrichtung nur ein Mischer versorgt werden kann, so daß die Verwiegeanlage einerseits und der Mischer andererseits in ihrem jeweiligen Arbeitszyklus voneinander abhängig sind.It is known (DE-PS 972 193, US Pat. No. 3,058,622) to assign each storage container its own weighing container with scales in order to be able to weigh all components at the same time and not to have to weigh them one after the other in the addition process. In these known devices, a number of storage containers corresponding to the number of components is provided, the flow of which opens directly into a weighing container. A screw conveyor is arranged below all weighing containers, into which the weighed components are released. The screw conveyor then transports the components to a mixer. With this device, the screw conveyor must run until it is ensured that there are no material residues left in the conveyor device, otherwise the recipe will not be correct or the subsequent recipe would be falsified. This therefore presupposes that the screw conveyor has a wake after the last weighing process, which in the worst case corresponds to the longest distance that a single component has to travel from the weighing container to the mixer. Added to this is the fact that screw conveyors do not run dry properly, particularly in the case of fine powdery material and a small amount of the individual components, and residual amounts remain in the screw conveyor. A further disadvantage is that only one mixer can be supplied with the known device, so that the weighing system on the one hand and the mixer on the other are dependent on one another in their respective working cycle.

Der Erfindung liegt die Aufgabe zugrunde, die eingangs genannte Vorrichtung dahingehend weiterzubilden, daß auch bei kleinen und kleinsten Chargen innerhalb einer Rezeptur aus einer Vielzahl von Komponenten die Rezeptur exakt ein­gehalten und in kürzester Zeit hergestellt werden kann und zwei oder mehr Mischer von der Vorrichtung mit gegebenen­falls wechselnden Rezepturen versorgt werden können.The invention has for its object to develop the device mentioned in such a way that even with small and smallest batches within a recipe The recipe can be exactly adhered to from a large number of components and can be produced in the shortest possible time and two or more mixers can be supplied by the device with possibly changing recipes.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Fördereinrichtung einen fahrbaren Sammelbehälter, dessen Bewegungsbahn über sämtliche Wiegebehälter reicht, und eine Antriebssteuerung aufweist, mittels der die Fahrbewegungen des Sammelbehälters derart steuerbar sind, daß der Sammel­behälter die Wiegebehälter in der Reihenfolge, in der das Sollgewicht erreicht ist, und abschließend eine Position zur Übergabe der gesammelten Komponenten an einen der Mischer anfährt.This object is achieved in that the conveyor device has a mobile collecting container, the path of which extends over all weighing containers, and a drive control by means of which the traveling movements of the collecting container can be controlled in such a way that the collecting container reaches the weighing container in the order in which the target weight is reached and finally moves to a position for transferring the collected components to one of the mixers.

Mit der Erfindung wird ein Sammelbehälter vorgeschlagen, der die Komponenten aus sämtlichen Wiegebehältern nach dem jeweiligen Wiegevorgang übernimmt und die aufgesammel­ten Komponenten nach Übernahme der zuletzt verwogenen Kom­ponente an den Mischer abgibt. Der Fahrantrieb des Sammel­behälters wird so gesteuert, daß er die einzelnen Wiege­behälter in derjenigen Reihenfolge anfährt, in der jeweils das Sollgewicht erreicht wird. Es wird also die Komponente mit dem geringsten Gewicht zuerst übernommen, während gleich­zeitig das Verwiegen der anderen Komponenten fortgesetzt wird, bis die nächste Komponente das Sollgewicht erreicht hat und der entsprechende Wiegebehälter vom Sammelbehälter angefahren wird. Es wird somit die gesamte Zeit für den am längsten dauernden Verwiegevorgang ausgenutzt, um in diesem Zeitraum die verwogenen Komponenten einzusammeln. Nach Übernahme der letzten Komponente fährt der Sammel­behälter in eine Übergabeposition, in der sämtliche auf­genommenen Komponenten einer Charge an einen der Mischer abgegeben werden. Die Entleerung des Sammelbehälters erfolgt in kürzester Zeit. Während der Fahrbewegungen in die Über­ gabeposition und während des Entleerens kann bereits wieder verwogen werden, insbesondere für eine Charge mit gegebe­nenfalls anderer Rezeptur, um nach Einsammeln dieser Kompo­nenten die Charge an einen anderen Mischer abzugeben.With the invention, a collecting container is proposed which takes over the components from all weighing containers after the respective weighing process and delivers the collected components to the mixer after taking over the last weighed component. The travel drive of the collecting container is controlled so that it moves to the individual weighing containers in the order in which the target weight is reached. The component with the lowest weight is therefore taken over first, while at the same time the weighing of the other components is continued until the next component has reached the target weight and the corresponding weighing container is approached by the collection container. The entire time for the longest weighing process is thus used to collect the weighed components during this period. After the last component has been taken over, the collection container moves into a transfer position in which all of the components of a batch that have been picked up are delivered to one of the mixers. The collection container is emptied in a very short time. During the movement in the over dispensing position and during emptying can already be weighed again, especially for a batch with a different recipe if necessary, in order to dispense the batch to another mixer after collecting these components.

Gemäß einer vorteilhaften Ausführungsform der Erfindung ist vorgesehen, daß der Sammelbehälter auf einer sich unterhalb sämtlicher Wiegebehälter erstreckenden Führung läuft und mittels eines Positionierantriebs verfahrbar ist.According to an advantageous embodiment of the invention, it is provided that the collecting container runs on a guide which extends below all weighing containers and can be moved by means of a positioning drive.

Als Positionierantrieb kann ein pneumatischer oder hydrau­lischer Zylinder vorgesehen sein, der fest eingestellte Positionen an den einzelnen Wiegebehältern aufweist, wobei lediglich die Reihenfolge des Anfahrens der einzelnen Posi­tionen in Abhängigkeit von dem Erreichen des Sollgewichtes an den einzelnen Wiegebehältern entsprechend der jeweils gewünschten Rezeptur geändert wird.A pneumatic or hydraulic cylinder can be provided as the positioning drive, which has fixed positions on the individual weighing containers, with only the sequence of moving to the individual positions being changed depending on the target weight being reached on the individual weighing containers in accordance with the respectively desired recipe.

Vorzugsweise sind die Wiegebehälter kippbar gelagert und aus einer Wiegeposition zur Aufnahme der Komponenten aus den Vorratsbehältern um 180 Grad in eine Entleerposition oberhalb des Sammelbehälters kippbar.The weighing containers are preferably mounted such that they can be tilted and can be tilted from a weighing position for receiving the components from the storage containers by 180 degrees into an emptying position above the collecting container.

Die Kipplagerung der Wiegebehälter hat den Vorteil, daß die Entleerung schnell und ohne weitere Hilfsmittel, wie Lockerungseinrichtungen od. dgl., erfolgen kann und daß ferner ein rückstandsfreies Entleeren des Wiegebehälters möglich ist, wodurch eine hohe Rezepturgenauigkeit gewähr­leistet ist.The tilting of the weighing container has the advantage that the emptying can be carried out quickly and without further aids, such as loosening devices or the like, and that a residue-free emptying of the weighing container is also possible, which ensures high formulation accuracy.

Gemäß einem Ausführungsbeispiel sind die Wiegebehälter an einem Arm mit einem Kippantrieb angeordnet, der bei Erreichen des Sollgewichtes und untergefahrenem Sammel­behälter den Wiegebehälter in die Entleerposition kippt. Der Kippantrieb wird also einerseits von einem das Soll­ gewicht aufnehmenden Sensor, andererseits von einem Posi­tionsmelder des Sammelbehälters angesteuert.According to one exemplary embodiment, the weighing containers are arranged on an arm with a tilting drive which, when the target weight is reached and the collecting container is moved under, tilts the weighing container into the emptying position. On the one hand, the tilt drive becomes the target weight-absorbing sensor, on the other hand controlled by a position detector of the collecting container.

Um die Kippmomente, die durch die Anordnung der Wiege­behälter an einem Kipparm entstehen, für den Wiegevorgang zu kompensieren, ist jeder Wiegebehälter mit seinem Kipp­arm von einem Parallelogrammgestänge geführt, das von der Waage aufgenommen ist. Auf diese Weise wirkt sich das Kipp­moment des Wiegebehälters nicht auf die Verwiegung aus.In order to compensate for the tilting moments caused by the arrangement of the weighing containers on a tilting arm for the weighing process, each weighing container with its tilting arm is guided by a parallelogram linkage which is received by the balance. In this way, the tilting moment of the weighing container does not affect the weighing.

Die Wiegebehälter können mit einer mechanischen Lockerungs­einrichtung, z. B. einer Rüttel- oder Klopfeinrichtung, versehen sein, um auch haftende Produkte, z. B. Pigmente, die durch das Kippen allein nicht ausfließen, vollständig zu entleeren.The weighing container can be equipped with a mechanical loosening device, e.g. B. a vibrating or tapping device, provided to also sticky products such. B. completely empty pigments that do not flow out by tilting alone.

In weiterhin vorteilhafter Ausgestaltung ist vorgesehen, daß jedem Vorratsbehälter eine eigene Dosierschnecke zuge­ordnet ist, deren oberhalb des Wiegebehälters liegender Ab­lauf mit einem Verschluß versehen ist.In a further advantageous embodiment, it is provided that each storage container is assigned its own dosing screw, the drain above which is provided with a closure.

Diese Ausbildung hat zunächst den Vorteil, daß die einzel­nen Komponenten aus dem Vorratsbehälter auf kürzestem Weg in die Dosierschnecke gelangen, um von dieser in den Wiege­behälter ausgetragen zu werden. Der am Ablauf der Dosier­schnecke angeordnete Verschluß kann zwei Funktionen erfül­len. Zum einen kann er betätigt werden, wenn das Sollgewicht an dem entsprechenden Wiegebehälter erreicht ist, so daß der Materialfluß schlagartig unterbrochen wird. Zum anderen kann durch Schließen des Ablaufs die Dosierschnecke zusammen mit dem Vorratsbehälter unter Vakuum oder Überdruck gesetzt werden, um auf diese Weise beispielsweise das Füllen der Vorratsbehälter durch Saug- oder Druckförderung zu ermög­lichen. Es ist deshalb ferner zweckmäßig, die Dosierschnecke unmittelbar an den Ablauf des Vorratsbehälters anzuflanschen.This training initially has the advantage that the individual components get from the storage container in the shortest possible way into the metering screw in order to be discharged into the weighing container by the latter. The closure arranged at the outlet of the dosing screw can fulfill two functions. On the one hand, it can be actuated when the target weight has been reached on the corresponding weighing container, so that the material flow is suddenly interrupted. On the other hand, by closing the drain, the dosing screw can be placed under vacuum or overpressure together with the storage container, in order in this way, for example, to enable the storage containers to be filled by suction or pressure delivery. It is therefore also expedient to flange-mount the dosing screw directly onto the outlet of the storage container.

Schließlich kann in der Bewegungsbahn des Sammelbehälters ein Auffangbehälter zur Aufnahme fehlverwogener Komponenten angeordnet sein, um eine solche Fehlcharge im gleichen Arbeitszyklus aussondern zu können.Finally, a collecting container for receiving incorrectly weighed components can be arranged in the path of movement of the collecting container in order to be able to separate out such an incorrect batch in the same working cycle.

Nachstehend ist die Erfindung anhand eines in der Zeichnung schematisch wiedergegebenen Ausführungsbeispiels beschrie­ben.The invention is described below with reference to an exemplary embodiment shown schematically in the drawing.

In der Zeichnung sind mehrere Vorratsbehälter 1 erkennbar, die einen größeren Vorrat der einzelnen Komponenten auf­nehmen. Die Vorratsbehälter 1 sind über eine Leitung 2 an ein Vakuumgebläse 3 angeschlossen und weisen in ihrem oberen Bereich je einen Filter 4 auf. Jeder Vorratsbehälter 1 ist weiterhin mit einem Komponentenzulauf 5 versehen, über den er mittels des Vakuumgebläses 3 aus einem Tank­wagen od. dgl. gefüllt werden kann.In the drawing, several storage containers 1 can be seen, which hold a larger supply of the individual components. The storage containers 1 are connected via a line 2 to a vacuum blower 3 and each have a filter 4 in their upper area. Each storage container 1 is further provided with a component inlet 5, by means of which it can be filled from a tank truck or the like by means of the vacuum blower 3.

An den Boden 6 jedes Vorratsbehälter, der gegebenenfalls noch mit einer Lockerungseinrichtung ausgestattet ist, ist eine motorisch angetriebene Dosierschnecke 7 ange­flanscht, deren Ablauf 8 mittels eines Verschlusses 9, der beispielsweise pneumatisch gesteuert ist, verschlossen werden kann.A motor-driven metering screw 7 is flanged to the bottom 6 of each storage container, which is optionally also equipped with a loosening device, the outlet 8 of which can be closed by means of a closure 9, which is controlled pneumatically, for example.

Unterhalb des Ablaufs 8 jeder Dosierschnecke 7 ist ein Wiegebehälter 10 angeordnet, der an einem drehbar gelager­ten Kipparm 11 sitzt und mittels eines Motors aus der in der Zeichnung wiedergegebenen Füll- und Wiegeposition um 180 Grad nach unten gekippt werden kann. Der Wiegebehälter 10 sitzt zusammen mit dem Kipparm 11 in einem Parallelo­grammgestänge 11 mittels dessen er parallel geführt ist, um die Wiegezelle 13 von Kippmomenten freizuhalten.Below the outlet 8 of each dosing screw 7, a weighing container 10 is arranged, which sits on a rotatably mounted tilting arm 11 and can be tilted downwards by 180 degrees from the filling and weighing position shown in the drawing. The weighing container 10 sits together with the tilting arm 11 in a parallelogram linkage 11 by means of which it is guided in parallel in order to keep the weighing cell 13 free of tilting moments.

Unterhalb der Wiegebehälter 10 ist eine Führung 14 angeord­net, die sich über sämtliche Wiegebehälter 10 erstreckt und auf der ein Sammelbehälter 15 entsprechend den angegebenen Richtungspfeilen verfahrbar ist. Der Sammelbehälter 15 weist einen verschließbaren Ablauf 16 auf. Er ist mittels eines nicht näher gezeigten Antriebs, z. B. eines Pneumatik­oder Hydraulikzylinders, von Wiegebehälter zu Wiegebehälter und zu der in der Zeichnung wiedergegebenen Übergabeposition verfahrbar, in der er sich oberhalb eines Behälters 17 befindet, an den wiederum ein Mischer angeschlossen ist.A guide 14 is arranged below the weighing container 10, which extends over all weighing containers 10 and on which a collecting container 15 can be moved in accordance with the indicated directional arrows. The collecting container 15 has a closable outlet 16. It is by means of a drive, not shown, for. B. a pneumatic or hydraulic cylinder, from weighing container to weighing container and to the transfer position shown in the drawing, in which it is located above a container 17, to which in turn a mixer is connected.

Für eine vorgegebene Rezeptur werden sämtliche Komponenten mittels der Dosierschnecken 7 gleichzeitig in die jeweiligen Wiegebehälter 10 übergeben. Der Sammelbehälter 15 fährt in die Position desjenigen Wiegebehälters 10, der zuerst das Sollgewicht erreicht, also bei dem die geringste Menge verwogen wird. Ist das Sollgewicht erreicht, wird der Kipp­antrieb dieses Wiegebehälters in Betrieb gesetzt, so daß der Wiegebehälter in den Sammelbehälter 15 entleert. An­schließend fährt der Sammelbehälter 15 die einzelnen Wiege­behälter in derjenigen Reihenfolge ab, wie dort das Soll­gewicht erreicht wird. Hat der Sammelbehälter 15 die letzte Komponente, die in der Regel diejenige mit dem größten Gewicht ist, aufgenommen, so fährt er in die in der Zeich­nung wiedergegebene Übergabeposition und gibt die einge­sammelten Komponenten nach Öffnen des Verschlusses 16 an den Behälter 17 ab. Während des Einfahrens in die Übergabe­position und der Übergabe an den Behälter 17 kann bereits wieder die nächste Rezeptur verwogen werden.For a given recipe, all components are simultaneously transferred into the respective weighing container 10 by means of the dosing screws 7. The collecting container 15 moves into the position of the weighing container 10 that first reaches the target weight, that is, in which the smallest amount is weighed. When the target weight is reached, the tilt drive of this weighing container is put into operation, so that the weighing container is emptied into the collecting container 15. The collecting container 15 then moves the individual weighing containers in the order in which the target weight is reached there. If the collecting container 15 has taken up the last component, which is usually the one with the greatest weight, it moves into the transfer position shown in the drawing and releases the collected components to the container 17 after opening the closure 16. The next recipe can already be weighed again while moving into the transfer position and transferring to the container 17.

In gleich vorteilhafter Weise kann der Sammelbehälter natür­lich auch zur Beschickung von zwei oder mehr Mischern ein­gesetzt werden, wobei die Rezepturen und die Fahrfolge des Sammelbehälters 15 entsprechend dem Bedarf an den Mischern gesteuert wird. Reicht das Volumen eines einzelnen Wiegebehälters für das zu verwiegende Gesamtgewicht einer Komponente nicht aus, so fährt der Sammelbehälter 15 zu­letzt an diese Position, übernimmt die erste Füllung des Wiegebehälters und anschließend den zum Sollgewicht fehlen­den Rest.In an equally advantageous manner, the collecting container can of course also be used to feed two or more mixers, the recipes and the sequence of the collecting container 15 being controlled according to the need for the mixers. Enough volume of an individual If the weighing container does not extend for the total weight of a component to be weighed, the collecting container 15 last moves to this position, takes over the first filling of the weighing container and then the remainder missing for the target weight.

Es kann schließlich entlang der Führung 14 ein nicht ge­zeigter Auffangbehälter in einer dem Behälter 17 entspre­chenden Position vorgesehen sein, um im Falle einer fehler­haften Verwiegung die vom Sammelbehälter 15 aufgenommene Fehlcharge entleeren zu können, ohne den Arbeitszyklus mehr als notwendig zu stören.Finally, a collecting container, not shown, can be provided along the guide 14 in a position corresponding to the container 17, in order to be able to empty the incorrect batch received by the collecting container 15 in the event of incorrect weighing, without disrupting the working cycle more than necessary.

Claims (9)

1. Vorrichtung zum Zusammenführen einzelner rieselfähiger Materialkomponenten kleinen Gewichtes zu einer Mischung mit genauer Rezeptur der Komponenten, bestehend aus einer der Anzahl der Komponenten entsprechenden Anzahl von Vorratsbehältern, je einer jedem Vorratsbehälter zugeordneten Waage mit Wiegebehälter und einer die abgewogenen Komponenten aus den Wiegebehältern über­nehmend en und zwei oder mehr Mischern zuführenden Fördereinrichtung, dadurch gekennzeichnet, daß die Fördereinrichtung einen fahrbaren Sammelbehälter (15), dessen Bewegungsbahn (14) über sämtliche Wiegebehälter (10) reicht, und eine Antriebssteuerung aufweist, mittels der die Fahrbewegungen des Sammelbehälters derart steuerbar sind, daß der Sammelbehälter (15) die Wiegebehälter (10) in der Reihenfolge, in der das Sollgewicht erreicht ist, und abschließend eine Position zur Übergabe der gesammelten Komponenten an einen der Mischer (17) anfährt.1.Device for bringing together individual free-flowing material components of small weight to form a mixture with an exact formulation of the components, consisting of a number of storage containers corresponding to the number of components, a scale assigned to each storage container with weighing container and one taking over the weighed components from the weighing containers and Conveying device feeding two or more mixers, characterized in that the conveying device has a mobile collecting container (15), the path of movement (14) of which extends over all weighing containers (10), and a drive control by means of which the traveling movements of the collecting container can be controlled in such a way that the Collecting container (15) the weighing container (10) in the order in which the target weight is reached, and finally a position for transferring the collected components to one of the mixers (17). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Sammelbehälter (15) auf einer sich unterhalb sämtlicher Wiegebehälter (10) erstreckenden Führung (14) läuft und mittels eines Positionierantriebs ver­fahrbar ist.2. Device according to claim 1, characterized in that the collecting container (15) runs on a below all weighing containers (10) extending guide (14) and can be moved by means of a positioning drive. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekenn­zeichnet, daß die Wiegebehälter (10) kippbar gelagert und aus einer Wiegeposition zur Aufnahme der Komponen­ten aus den Vorratsbehältern (1) um 180 Grad in eine Entleerposition oberhalb des Sammelbehälters (15) kippbar sind.3. Apparatus according to claim 1 or 2, characterized in that the weighing container (10) is tiltably mounted and can be tilted from a weighing position for receiving the components from the storage containers (1) by 180 degrees into an emptying position above the collecting container (15). 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Wiegebehälter (10) an einem Arm (11) mit einem Kippantrieb angeordnet sind, der bei Erreichen des Sollgewichtes und untergefahrenem Sammelbehälter (15) den Wiegebehälter in die Entleer­position kippt.4. Device according to one of claims 1 to 3, characterized in that the weighing container (10) are arranged on an arm (11) with a tilting drive which tilts the weighing container into the emptying position when the target weight is reached and the collecting container (15) is moved under. 5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß jeder Wiegebehälter (10) mit seinem Kipparm (11) von einem Parallelogrammgestänge (12) geführt ist, das von der Waage (13) aufgenommen ist.5. Device according to one of claims 1 to 4, characterized in that each weighing container (10) with its tilting arm (11) is guided by a parallelogram linkage (12) which is received by the scale (13). 6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß jedem Wiegebehälter eine mechani­sche Lockerungseinrichtung, z. B. eine Klopf- oder Rütteleinrichtung, zugeordnet ist.6. Device according to one of claims 1 to 5, characterized in that each weighing container has a mechanical loosening device, for. B. a tapping or vibrating device is assigned. 7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß jedem Vorratsbehälter (1) eine eigene Dosierschnecke (7) zugeordnet ist, deren ober­halb des Wiegebehälters (10) liegender Ablauf (8) mit einem Verschluß (9) versehen ist.7. Device according to one of claims 1 to 6, characterized in that each storage container (1) is assigned its own metering screw (7), the above the weighing container (10) lying drain (8) is provided with a closure (9). 8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Dosierschnecke (7) unmittelbar an den Ablauf des Vorratsbehälters (1) angeflanscht ist.8. Device according to one of claims 1 to 7, characterized in that the metering screw (7) is flanged directly to the outlet of the storage container (1). 9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß in der Bewegungsbahn des Sammel­behälters (15) ein Auffangbehälter zur Aufnahme fehl­verwogener Komponenten angeordnet ist.9. Device according to one of claims 1 to 8, characterized in that in the path of movement of the collecting container (15), a collecting container is arranged for receiving incorrectly weighed components.
EP89108899A 1988-06-01 1989-05-18 Apparatus for dosing components of flowable granular solids to be mixed Expired - Lifetime EP0344521B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3818637A DE3818637A1 (en) 1988-06-01 1988-06-01 DEVICE FOR COMBINING GIANT MATERIAL COMPONENTS TO A MIXTURE
DE3818637 1988-06-01

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EP0344521A2 true EP0344521A2 (en) 1989-12-06
EP0344521A3 EP0344521A3 (en) 1991-09-11
EP0344521B1 EP0344521B1 (en) 1993-04-21

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EP0507689A2 (en) * 1991-04-02 1992-10-07 Robert Perrin Automatic feeding device for a processing machine, particularly for processing plastic material, by homogeneous mixing of several products
EP0537434A1 (en) * 1991-09-17 1993-04-21 I.A.S. INDUSTRIAL AUTOMATION SYSTEMS S.A.S. di D. GALLI & C. Apparatus for delivering and metering fluid substances
EP1361185A2 (en) 2002-05-10 2003-11-12 AZO Verwaltungs-GmbH Dispenser for flowable material
ITBZ20090029A1 (en) * 2009-07-07 2011-01-08 Francesco Bezzi PLANT AND PROCEDURE FOR THE CONTINUOUS PRODUCTION OF PRE-PACKED AND PRE-MIXED CONGLOMERATES
WO2012010155A1 (en) 2010-07-17 2012-01-26 Rudolf Baumann Device and method for removing and metering bulk material

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AT413092B (en) * 2003-05-12 2005-11-15 Steinwald Kurt Bulk powder dosing and mixing assembly has a number of hoppers located side-by-side each with an integral dose regulator
DE102005032448A1 (en) * 2005-11-12 2007-05-16 Juergen Opdenhoff Process and assembly to prepare very small quantities of mixed powders or liquids for use in e.g. the chemical or pharmaceutical industries
DE102007050268B4 (en) 2007-10-18 2010-01-07 Plast-Control Gmbh Device for metered mixing of pourable material components and plastic processing machine
AT513610B1 (en) * 2013-04-26 2014-06-15 Kisch Andreas Device for providing baking and baking additives

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0507689A2 (en) * 1991-04-02 1992-10-07 Robert Perrin Automatic feeding device for a processing machine, particularly for processing plastic material, by homogeneous mixing of several products
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EP0507689A3 (en) * 1991-04-02 1993-02-24 Robert Perrin Automatic feeding device for a processing machine, particularly for processing plastic material, by homogeneous mixing of several products
EP0537434A1 (en) * 1991-09-17 1993-04-21 I.A.S. INDUSTRIAL AUTOMATION SYSTEMS S.A.S. di D. GALLI & C. Apparatus for delivering and metering fluid substances
EP1361185A2 (en) 2002-05-10 2003-11-12 AZO Verwaltungs-GmbH Dispenser for flowable material
ITBZ20090029A1 (en) * 2009-07-07 2011-01-08 Francesco Bezzi PLANT AND PROCEDURE FOR THE CONTINUOUS PRODUCTION OF PRE-PACKED AND PRE-MIXED CONGLOMERATES
EP2272646A1 (en) * 2009-07-07 2011-01-12 Francesco Bezzi Assembly and method for continuous production of ready mix concrete
WO2012010155A1 (en) 2010-07-17 2012-01-26 Rudolf Baumann Device and method for removing and metering bulk material
DE102010027547A1 (en) 2010-07-17 2012-02-02 Rudolf Baumann Device and method for removal and metering
DE102010027547B4 (en) * 2010-07-17 2013-08-29 Rudolf Baumann Device and method for removal and metering

Also Published As

Publication number Publication date
EP0344521A3 (en) 1991-09-11
DE3818637C2 (en) 1990-03-22
DE3818637A1 (en) 1989-12-21
EP0344521B1 (en) 1993-04-21
DE58904109D1 (en) 1993-05-27

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