EP0143692B1 - Verfahren und Vorrichtung zur Überwachung und Steuerung des Füllens einer Folge von Behältern mit einem bestimmten Gewicht eines Produkts mit wechselndem volumetrischem Gewicht - Google Patents

Verfahren und Vorrichtung zur Überwachung und Steuerung des Füllens einer Folge von Behältern mit einem bestimmten Gewicht eines Produkts mit wechselndem volumetrischem Gewicht Download PDF

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Publication number
EP0143692B1
EP0143692B1 EP84402269A EP84402269A EP0143692B1 EP 0143692 B1 EP0143692 B1 EP 0143692B1 EP 84402269 A EP84402269 A EP 84402269A EP 84402269 A EP84402269 A EP 84402269A EP 0143692 B1 EP0143692 B1 EP 0143692B1
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EP
European Patent Office
Prior art keywords
filling
receptacle
controlling
volumetric dispenser
carrousel
Prior art date
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Expired
Application number
EP84402269A
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English (en)
French (fr)
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EP0143692A1 (de
Inventor
André Jean-Jacques Graffin
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A BERTAUD ETS
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A BERTAUD ETS
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Priority to AT84402269T priority Critical patent/ATE33469T1/de
Publication of EP0143692A1 publication Critical patent/EP0143692A1/de
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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
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/26—Methods or devices for controlling the quantity of the material fed or filled

Definitions

  • the subject of the present invention is a method and a device for monitoring and controlling the chain filling of containers with a determined weight of product having a variable density.
  • this minimum time of presence of the container on the scale can be increased if containers are used whose weight varies from one container to another, which is the case for glass containers in particular, because it is necessary to tare each container. (One could naturally get rid of the need to tare each container by overdosing the product to be packaged so as to cover the variation in the weight of the containers but this would find the disadvantages presented by filling installations with volumetric dosing).
  • An object of the invention is to provide a method and a device making it possible to obtain very good dosing precision while filling at a high rate.
  • a method for monitoring and controlling the filling of containers comprising the steps of: successively engaging empty containers in a filling installation comprising an element of the rotary carrousel type with several filling stations , to weigh each container while it is still empty, to fill each container while comparing its weight to a set value by means of a scale moving with each filling station, and to stop the filling by closing a dispensing orifice when the set value is reached (such a process is known from document EP-A-052 546) characterized in that filling is carried out according to the steps of filling a volumetric metering device associated with each station with a volume of product whose weight is slightly greater than the set value, and transfer the product from the volumetric dispenser to the container under the effect of a c ommand, the abnormal forces resulting from the closure of the dispensing orifice before the flow of the total volume of product initially introduced into the volumetric dispenser being absorbed by elastic means interposed between the control member and the volume
  • a device for monitoring and controlling the filling of containers successively engaged in a filling installation comprising an element of the rotary carousel type with several filling stations, each filling station filling comprising filling means and a scale which moves with the station, the installation further comprising a calculation and storage device for taring a container, comparing the weight of the container with a set value during filling and control the stopping of filling by closing a dispensing orifice when the weight of the container contents reaches the set value (such a device is known from document EP-A-052 546), characterized in that the means to filling include a volumetric dispenser to receive a determined volume of product having a weight in excess of the set value on a first path of the carousel and transfer a part of this volume in a container on a second path of the carousel, the installation further comprising a control member for controlling the filling of each volumetric dispenser during the first journey of the carousel and
  • Figure 1 are shown the different phases of the path of a container on a chain filling installation comprising a rotary carousel 3 equipped with several filling stations.
  • the container is conveyed by a conveying means 1 to a distribution star 2 which introduces it at point 6 onto one of the filling stations of the carousel 3, which is driven in a rotational movement.
  • a distribution star 2 which introduces it at point 6 onto one of the filling stations of the carousel 3, which is driven in a rotational movement.
  • the container is tared, by resetting the balance to zero for example, while the filling of the volumetric metering device started at point 10 is completed.
  • point 7 and point 8 part of the volume of product contained in the volumetric dispenser is transferred with a rapid flow from the dispenser into the container.
  • the transfer continues with a slower flow until the container contains the desired weight of product.
  • the container is weighed continuously.
  • a calculation and storage unit a microprocessor for example, continuously compares the weight of the product contained in the container with the desired weight and, when this desired weight is reached, stops filling of the container.
  • the filled container then leaves the carousel 3 or tangentially to the carousel 3, on a conveying means 25 or else in a preferred direction, parallel to a conveying means 1 for example, via a distribution star 4 on a conveying means 5.
  • FIG. 2 shows a schematic sectional view of an exemplary embodiment of a filling station.
  • Each filling station is located on the rotary carousel 3 and comprises: an electronic balance 36; means 38 for centering a container 39; a hopper for supplying the product to be packaged 12; a volumetric metering device 37 comprising a piston 28 provided with sealing means 29, a cylinder 13 in which the piston 28 slides, a rod 33 actuating the piston 28; a distributor 14 comprising a body 19 and a cylindrical plug 18 capable of pivoting in the body 19.
  • the body 19 has a horizontal bore of axis 27; a vertical duct 24 located in its upper part and opening on the one hand into the feed hopper 12 and on the other hand into the bore of axis 27; a vertical duct 26 located in its upper part and opening on the one hand into the volumetric metering device 37 and on the other hand into the bore of axis 27; a vertical bore of the same axis as the conduit 26, surmounting the latter and receiving the cylinder 13 of the volumetric metering device 37; a vertical duct 30 situated in its lower part and opening on the one hand into the bore of axis 27 and on the other hand above the container 39.
  • the cylindrical plug 18 occupies the vertical bore of axis 27 of the body 19, in which it can pivot. It comprises a recess 15 which, in a determined position of the plug 18 relative to the body 19, connects the conduits 24 and 26 of the body 19; a cylindrical conduit 17, without communication with the recess 15, which, in another determined position of the plug 18 relative to the body 19, connects the conduits 26 and 30 of the body 19; a control lever 20 for pivoting the plug 18 inside the body 19. Electrical, pneumatic or equivalent means, not shown in the figure, act on the control lever 20 on the instructions that communicates to them the organ for calculation and storage.
  • the plug 18 When a filling station is located between points 10 and 7 of the path shown in FIG. 1, the plug 18 is positioned so that the recess 15 faces the conduits 24 and 26 of the body 19 and the hopper of supply 12 and the volumetric dispenser 37 are in communication (case of FIG. 2). When a filling station is between point 7 and the filling stop point located between points 8 and 9 of the path shown in Figure 1, the plug 18 is positioned so that the conduit 17 is facing the conduits 26 and 30 of the body 19 and the votumetric dispenser 37 and the container 39 are in communication.
  • FIG. 4 represents a schematic developed view of a cam controlling the operation of two filling stations. It must be understood that in reality such a cam is not located in a plane but is wound on a cylinder with the same center as the carousel and that it controls a number of filling stations, variable depending on the case, but well above 2.
  • the cam 34 shown in FIG. 4 comprises a rising ramp with two successive inclinations: ramp 340 between points 10 and 6, ramp 341 between points 6 and 7; a downward ramp with two inclinations: ramp 342 between points 7 and 8, ramp 343 between points 8 and 9; a horizontal part 344 between points 9 and 10 (the numbering of these points corresponds to that of FIG. 1).
  • the upward path corresponds to the filling of the volumetric dispenser 37.
  • the downward path corresponds in part to the transfer of the product from the volumetric doser 37 into the container 39.
  • the cam 34 is fixed relative to the rotary carousel 3 on which the filling stations are installed. It controls the operation of each of them by guiding a roller 32 secured to the rod 33 of the piston 28, by the interposition of elastic means 40 fixed on the one hand to the end of the rod 33, on the other hand to a fixed point 41 secured to the carousel.
  • the elastic means 40 work in compression and keep the roller 32 in contact with the cam 34 which allows the guide of the roller 32 by the cam on the downward ramp thereof. They have another function: when the container 39 is filled with the desired weight of product, the calculation and storage unit controls the closing of the dispensing orifice of the volumetric dispenser. The stroke of the piston 28 is thereby interrupted.
  • the roller 32 was guided along the downward ramp by rigid means, a rail parallel to the cam 34 coming into contact with the upper part of the roller, for example, damage would ensue.
  • the elastic means 40 the compression force of which has been calculated so that it is greater than the resistance encountered by the piston of the volumetric dispenser when it drives the product into the container, but less than the resistant force exerted on the elastic means by the piston rod when it is blocked, absorb the excess travel of the piston.
  • the roller 32 leaves the contact of the descending ramp of the cam at the point of stopping the filling of the container and resumes contact with the rising ramp of the cam at a point situated in the same horizontal plane as the point of stopping the filling of the container.
  • the guiding of the roller 32 by the cam 34 with the interposition of elastic means also constitutes security for the filling installation: the accidental blocking of a piston does not cause any unfortunate consequence of the fact that the roller can escape from drug.
  • the filling of the volumetric metering device 37 can be modified so that the point of stopping the filling of the container 39 takes place between points 8 and 9, that is to say on the descending ramp 343, when the filling rate is slow.
  • FIG. 4 is shown a device, allowing the modification of the volume admitted into the volumetric metering device, constituted by a part of an ascending ramp 341 of the cam 34 with adjustable inclination, and a geared motor 25 actuating an endless screw 16.
  • the inclination of the ramp part 341 is adjusted so that the point of stopping the filling of the containers takes place between points 8 and 9.
  • the calculation and storage unit records the coordinates of the stop point for filling each container and check that it is on the ramp part 343. If for some reason or other a drift occurs and the stop point for filling the containers closer to point 8 or point 9 beyond determined set values, the calculation and storage unit would command a modification of the inclination of the ramp part 341, up or down depending on the sense of drift.
  • FIG. 5 represents an exemplary embodiment of elastic means interposed between the cam 34 and the rod 33 of the piston of each volumetric metering device 37.
  • the elastic means used in this example consist of a pneumatic cylinder comprising a cylinder 44 secured to the carousel 3, a piston 43 sliding in the cylinder 44, a rod 42 fixed to the piston 43 at one end and secured to the roller 32 at the other end.
  • the pneumatic cylinder of each filling station is connected to the cylinder of all the other filling stations and to a buffer volume 46 by a pipe 45.
  • Figure 6 shows the sectional view of another embodiment of elastic means interposed between the cam 34 and the rod 33 of the piston of each volumetric metering device.
  • the piston 28 of the volumetric metering device 37 is surmounted by a cylindrical part 47 comprising a bore intended to guide the end of the rod 33.
  • the rod 33 comprises a vertical slot 48. It enters the bore of the cylindrical part 47 where it can slide vertically between two extreme positions defined by light 48, light in which passes a horizontal pin 50 taken at its two ends in the cylindrical part 47.
  • On the rod 33 is further fixed by a pin 51, a ring 49 having a shoulder.
  • a spring 52 working in compression is disposed between the ring 49 and the piston 28 along the axis of the rod 33.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Container Filling Or Packaging Operations (AREA)

Claims (8)

1. Verfahren zum Überwachen und Steuern des Füllens von Behältern mit den Schritten : nacheinander erfolgendes Einbringen von leeren Behältern in eine Fülleinrichtung mit einem Element in der Art eines mehrere Füllstationen aufweisenden Drehkarussels, Wägen jedes Behälters solange er noch leer ist, Durchführen der Befüllung jedes Behälters unter Vergleich seines Gewichtes mit einem Sollwert mittels einer Waage (36), die sich zusammen mit jeder Füllstation verschiebt, und Stoppen der Befüllung durch Verschließen einer Verteileröffnung, wenn der Sollwert erreicht ist, dadurch gekennzeichnet, daß die Befüllung in folgenden Etappen ausgeführt wird : Füllen eines jeder Station zugeordneten volumetrischen Dosierers (37) mit einem Produktvolumen, dessen Gewicht leicht über dem Sollwert liegt, und Überführen des Produktes aus dem volumetrischen Dosierer in den Behälter unter der Wirkung eines Steuerorgans, wobei unnormale Beanspruchungen, die aus dem Verschließen der Verteileröffnung vor dem Ausströmen des ursprünglich in den volumetrischen Dosierer eingegebenen Gesamtvolumens an Produkt resultieren, durch elastische Mittel (40) absorbiert werden, die zwischen das Steuerorgan und den volumetrischen Dosierer eingeschaltet sind.
2. Verfahren zum Überwachen und Steuern des Füllens von Behältern nach Anspruch 1, bei dem der Füllungsdurchsatz in einer ersten Phase rasch und in einer zweiten Phase langsamer ist, und die erste Phase eine bestimmte Dauer hat, dadurch gekennzeichnet, daß die Lage des Abstopp-Punktes der Füllung eines Behälters auf dem Füllweg ausgenutzt wird, um eventuell das in den volumetrischen Dosierer (37) der Füllstation eines späteren Behälters einzuführende Produktvolumen derart zu modifizieren, daß sich die Füllung des letzteren während der Phase vollzieht, in welcher der Fülldurchsatz langsam ist.
3. Vorrichtung zum Überwachen und Steuern des Füllens von nacheinander in eine Fülleinrichtung eingebrachten Behältern, wobei die Fülleinrichtung umfaßt : ein Element in der Art eines mehrere Füllstationen aufweisenden Drehkarussels (3), jede Füllstation umfassend Füllmittel und eine Waage (36), die sich mit der Station verschiebt, und außerdem ein Rechenund Abspeicherorgan, um die Austarierung eines Behälters zu vollziehen, um das Gewicht des Behälters während der Füllung mit einem Bezugswert zu vergleichen und um das Abstoppen der Füllung durch Verschließen einer Verteileröffnung zu steuern, wenn das Gewicht des Behälterinhalts den Sollwert erreicht, dadurch gekennzeichnet, daß die Füllmittel einen volumetrischen Dosierer (37) umfassen, um auf einer ersten .Laufstrecke des Karussels ein bestimmtes Produktvolumen mit einem höheren Gewicht als der Sollwert aufzunehmen und einen Teil dieses Volumens auf einer zweiten Laufstrecke des Karussels in einen Behälter zu überführen, und daß die Einrichtung außerdem ein Steuerorgan aufweist, um die Füllung jedes volumetrischen Dosierers (37) auf der ersten Laufstrecke des Karussels und die Überführung eines Teiles seines Inhalts in einen Behälter auf der zweiten Laufstrecke des Karussels zu steuern, sowie zwischen das Steuerorgan und den volumetrischen Dosierer (37) eingeschaltete elastische Mittel (40), um unnormale Beanspruchungen aufzunehmen, die aus dem Verschließen der Verteileröffnung des volumetrischen Dosierers vor dem Ausströmen des ursprünglich eingegebenen Gesamtvolumens an Produkt resultieren.
4. Vorrichtung zum Überwachen und Steuern des Füllens von Behältern nach Anspruch 3, in welcher das Steuerorgan Mittel umfaßt, um die Überführung des Produkts aus dem volumetrischen Dosierer in den Behälter zunächst auf dem ersten Teil der zweiten Laufstrecke des Karussels mit großer Geschwindigkeit, anschließend auf dem zweiten Teil der zweiten Laufstrecke des Karussels mit reduzierter Geschwindigkeit zu steuern, dadurch gekennzeichnet, daß sie Mittel umfaßt, um auf das Steuerorgan in Abhängigkeit vom Abstopp-Punkt der Füllung des Behälters auf dem zweiten Teil der zweiten Laufstrecke des Karussels einzuwirken.
5. Vorrichtung zum Überwachen und Steuern des Füllens von Behältern nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß der volumetrische Dosierer ein Zylinder (13) mit einem Kolben (28) und das Steuerorgan ein Nocken (34) ist, der auf den Hub des Zylinders einwirkt.
6. Vorrichtung zum Überwachen und Steuern des Füllens von Behältern nach Anspruch 4 und 5, bei welcher der Teil des Nockens, welcher der zweiten Laufstrecke des Karussels entspricht, zwei aufeinanderfolgende Neigungen (342, 343) aufweist, dadurch gekennzeichnet, daß der Nocken (34) wenigstens einen beweglichen Teil (341) aufweist, um den Hub des Kolbens (28) des Zylinders (13) des volumetrischen Dosierers (37) und infolgedessen sein Volumen zu modifizieren.
7. Vorrichtung zum Überwachen und Steuern des Füllens von Behältern nach Anspruch 3, dadurch gekennzeichnet, daß die zwischen jeden volumetrischen Dosierer und das Steuerorgan eingeschalteten elastischen Mittel Federn (52) sind.
8. Vorrichtung zum Überwachen und Steuern des Füllens von Behältern nach Anspruch 3, dadurch gekennzeichnet, daß die zwischen jeden volumetrischen Dosierer (37) und das Steuerorgan eingeschalteten elastischen Mittel pneumatische Arbeitszylinder sind, die über eine Leitung (45) an ein Puffervolumen (46). angeschlossen sind.
EP84402269A 1983-11-18 1984-11-09 Verfahren und Vorrichtung zur Überwachung und Steuerung des Füllens einer Folge von Behältern mit einem bestimmten Gewicht eines Produkts mit wechselndem volumetrischem Gewicht Expired EP0143692B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84402269T ATE33469T1 (de) 1983-11-18 1984-11-09 Verfahren und vorrichtung zur ueberwachung und steuerung des fuellens einer folge von behaeltern mit einem bestimmten gewicht eines produkts mit wechselndem volumetrischem gewicht.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8318417A FR2555132B1 (fr) 1983-11-18 1983-11-18 Procede de remplissage d'un recipient d'une quantite determinee de produit
FR8318417 1983-11-18

Publications (2)

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EP0143692A1 EP0143692A1 (de) 1985-06-05
EP0143692B1 true EP0143692B1 (de) 1988-04-13

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EP84402269A Expired EP0143692B1 (de) 1983-11-18 1984-11-09 Verfahren und Vorrichtung zur Überwachung und Steuerung des Füllens einer Folge von Behältern mit einem bestimmten Gewicht eines Produkts mit wechselndem volumetrischem Gewicht

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US (1) US4635688A (de)
EP (1) EP0143692B1 (de)
JP (1) JPH0627662B2 (de)
AT (1) ATE33469T1 (de)
BR (1) BR8405869A (de)
CA (1) CA1232883A (de)
DE (1) DE3470401D1 (de)
ES (1) ES537739A0 (de)
FR (1) FR2555132B1 (de)
ZA (1) ZA848851B (de)

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DE3630077A1 (de) * 1986-09-04 1988-03-17 Benz & Hilgers Gmbh Vorrichtung zum gleichzeitigen dosierten abfuellen von fluessigen oder weichplastischen stoffen, wie butter, margarine, pasten oder dgl. ueber mundstuecke in benachbart zueinander angeordnete behaelter
US4817683A (en) * 1987-07-01 1989-04-04 Laub Engineering Corporation Adjustable automatic accurate container filling machine
DE3938220A1 (de) * 1989-11-17 1991-05-23 Benz & Hilgers Gmbh Verfahren und vorrichtung zum verpacken von pastoesen produkten, wie suppenpasten, margarine, butter oder dgl. in form von paeckchen, wuerfeln oder dgl.
DE4117287A1 (de) * 1991-05-27 1992-12-03 Seitz Enzinger Noll Masch Verfahren zum fuellen von flaschen, dosen o. dgl. behaelter sowie fuellmaschine zum durchfuehren dieses verfahrens
US5280815A (en) * 1992-05-05 1994-01-25 Prc Product filling machine
US5356041A (en) * 1993-03-23 1994-10-18 Fluid Management Limited Partnership Dispensing apparatus having improved valving
IT1285580B1 (it) * 1996-03-04 1998-06-18 Mg 2 Spa Metodo per il controllo del peso in macchine dosatrici e dosaggio multiplo di prodotti in granuli e macchina dosatrice che attua il
US5921759A (en) * 1997-10-14 1999-07-13 Sandeep Khan Liquid metering piston pump and valves capable of being cleaned and sterilized without disassembly
DE10001068C1 (de) * 2000-01-13 2001-05-31 Bosch Gmbh Robert Vorrichtung zum Dosieren und Abgeben von Pulver in Hartgelatinekapseln oder dergleichen

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FR2555132A1 (fr) 1985-05-24
CA1232883A (en) 1988-02-16
ATE33469T1 (de) 1988-04-15
FR2555132B1 (fr) 1986-03-28
ZA848851B (en) 1985-06-26
EP0143692A1 (de) 1985-06-05
ES8601046A1 (es) 1985-10-16
BR8405869A (pt) 1985-09-17
JPS60155927A (ja) 1985-08-16
ES537739A0 (es) 1985-10-16
US4635688A (en) 1987-01-13
DE3470401D1 (en) 1988-05-19
JPH0627662B2 (ja) 1994-04-13

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