EP0248371A1 - Machine for filling bags - Google Patents

Machine for filling bags Download PDF

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Publication number
EP0248371A1
EP0248371A1 EP87107863A EP87107863A EP0248371A1 EP 0248371 A1 EP0248371 A1 EP 0248371A1 EP 87107863 A EP87107863 A EP 87107863A EP 87107863 A EP87107863 A EP 87107863A EP 0248371 A1 EP0248371 A1 EP 0248371A1
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EP
European Patent Office
Prior art keywords
parallel
sack
bag
filling
bag support
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
EP87107863A
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German (de)
French (fr)
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EP0248371B1 (en
Inventor
Joachim Dr.-Ing. Spiess
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Natronag Gesellschaft fuer Verpackungssysteme mbH
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Natronag Gesellschaft fuer Verpackungssysteme mbH
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Application filed by Natronag Gesellschaft fuer Verpackungssysteme mbH filed Critical Natronag Gesellschaft fuer Verpackungssysteme mbH
Priority to AT87107863T priority Critical patent/ATE44925T1/en
Publication of EP0248371A1 publication Critical patent/EP0248371A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/30Devices or methods for controlling or determining the quantity or quality or the material fed or filled
    • B65B1/32Devices or methods for controlling or determining the quantity or quality or the material fed or filled by weighing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/04Methods of, or means for, filling the material into the containers or receptacles
    • B65B1/18Methods of, or means for, filling the material into the containers or receptacles for filling valve-bags

Definitions

  • the invention relates to a bag filling machine with an electronic weighing device, which has a force transducer acted upon by a bag chair column, and with a bag chair guide, which consists of two upper and lower parallel bars, which are arranged on both sides of the bag chair column and whose two bearing points are designed as rod ends.
  • Such a bag filling machine is known from DE-PS 27 04 138.
  • links with rod ends for example self-aligning ball bearings
  • certain manufacturing tolerances in the manufacture of the links can be compensated.
  • D a for an electronic scale the displacement of the bag chair is only a few millimeters, is given a sufficiently good approximation to a vertical movement of the bag chair column.
  • wishbones are provided, which engage the sack chair column in the upper and lower area and prevent a possible tilting movement.
  • the wishbones Since the wishbones have a fixed length, they hinder somewhat the vertical movement of the sack chair column, as made possible by the parallel brackets. This can adversely affect the weighing process.
  • the invention is therefore based on the object of designing a sack filling machine of the type mentioned at the outset in such a way that a tilting movement of the sack chair column between the parallel cores is reliably prevented and yet there is no impairment of the vertical movement of the sack chair column.
  • Sack filling machines which are provided for filling valve sacks have a filling tube which can be inserted into the sack valve.
  • the filling tube is regularly inclined downwards, for example by 20 ° with respect to the horizontal. It has been shown that a measurement error occurs during the filling process, during which the weighing process takes place continuously. Studies have shown that this measurement error is due to the fact that the filling material coming from the filling tube hits the side wall of the sack at approximately the angle of the filling tube. This creates a vertical force component that falsifies the weighing result.
  • the parallel bars are ker parallel to an inclined filling tube.
  • the parallel links are also inclined downwards at an angle of 20 °.
  • the force transducer can still be aligned horizontally so that its measuring direction is aligned perpendicular.
  • the force transducer can also be oriented in such a way that its measuring direction is oriented perpendicular to the parallel core, so that in the example mentioned it is tilted 20 ° from the vertical. This leads to the sensor measuring only one weight component, namely the weight multiplied by cos 20 °. To get the exact measurement result, the electronics of the balance must multiply the measurement result by 1 / cos 20 °.
  • a fixed machine frame 1 is shown in broken lines. At the rear end of the machine frame 1 connected to pin 2 are formed as a spherical bearing G elenkkexcellent 3 of upper parallel links 4 and lower parallel links 5 is attached. The other ends of the parallel links are connected to an upper axle 6 or lower axle 7 via corresponding joint heads 3. In the middle of the axes 6, 7, sleeves 8 are arranged, which enclose a bag chair column 9 and hold it firmly.
  • the upper parallel link 4 are connected by a rigid coupling rod 10 and the lower parallel link 5 by a rigid coupling rod 11.
  • the coupling rod 10 or 11 thus forms a rigid frame with the associated parallel link core 4 or 5, which prevents the axes 6, 7 from tilting sideways out of the plane formed by the parallel link 4 or 5. This also prevents the bag chair column 9 from tilting.
  • the parallel links 4,5 are inclined 20 ° downward from the horizontal. This inclination corresponds to the inclination of the filling tube (not shown) of the bag filling machine.
  • this has a rectangular frame 12, the upper cross bar of which is connected to a force transducer 13.
  • the frame 12 is inclined forwards from the vertical by 20 ° so that it is perpendicular to the planes formed by the parallel links 4 and 5, respectively.
  • the force transducer 13 is oriented such that its effective measuring direction is oriented perpendicular to the links 4 and 5 - and thus also perpendicular to the upper crossbar of the frame 12.
  • the force transducer 13 is formed by a bending rod, which is attached to the machine frame 1 parallel to the parallel core 4 or 5.
  • the parallel links 4 and 5 are parallel to the filling tube of the bag filling machine and parallel to the longitudinal axis of the bending rod serving as a force transducer 13.
  • the force transducer 13 does not measure the weight G of the filled bag, but a weight component G cos 20 °.
  • the evaluation electronics is therefore set so that it multiplies the weight measured by the force transducer 13 by the constant factor 1 / cos 20 °. In this way, the correct absolute value is determined by the weighing device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Basic Packing Technique (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

A bag-filling machine having an electronic weighing device which has a force receiver acting upon a bag support column. The machine also has a bag support guide which comprises two upper parallel guides and two lower parallel guides which are disposed in each instance on both sides of the bag support column and whose bearings are constructed as articulated heads. A possible lateral tilting of the bag support column is effectively prevented, without impairment of the vertical movement of this bag support column. The two upper parallel guides and the two lower parallel guides are rigidly connectd to one another by a respective coupling rod.

Description

Die Erfindung betrifft eine Sackfüllmaschine mit einer elektronischen Wägeeinrichtung, die einen von einer Sackstuhlsäule beaufschlagten Kraftaufnehmer aufweist,und mit einer Sackstuhlführung, die aus je zwei oberen und unteren Parallellenkern besteht, die jeweils beidseitig der Sackstuhlsäule angeordnet sind und deren beide Lagerstellen als Gelenkköpfe ausgebildet sind.The invention relates to a bag filling machine with an electronic weighing device, which has a force transducer acted upon by a bag chair column, and with a bag chair guide, which consists of two upper and lower parallel bars, which are arranged on both sides of the bag chair column and whose two bearing points are designed as rod ends.

Eine derartige Sackfüllmaschine ist durch die DE-PS 27 04 138 bekannt. Durch die Verwendung von Lenkern mit Gelenkköpfen, beispielsweise Pendelkugellagern, können gewisse Fertigungstoleranzen bei der Herstellung der Lenker kompensiert werden. Da bei einer Elektronikwaage die Auslenkung des Sackstuhls nur wenige Millimeter beträgt, ist eine ausreichend gute Annäherung an eine lotrechte Bewegung der Sackstuhlsäule gegeben. Zur Vermeidung einer Kippbewegung der Sackstuhlsäule zwischen den Parallellenkern sind Querlenker vorgesehen, die im oberen und unteren Bereich der Sackstuhlsäule an dieser angreifen und eine eventuelle Kippbewegung verhindern.Such a bag filling machine is known from DE-PS 27 04 138. By using links with rod ends, for example self-aligning ball bearings, certain manufacturing tolerances in the manufacture of the links can be compensated. D a for an electronic scale, the displacement of the bag chair is only a few millimeters, is given a sufficiently good approximation to a vertical movement of the bag chair column. To avoid a tilting movement of the sack chair column between the parallel links, wishbones are provided, which engage the sack chair column in the upper and lower area and prevent a possible tilting movement.

Da die Querlenker eine feste Länge aufweisen, behindern sie etwas die vertikale Bewegung der Sackstuhlsäule, wie sie von den Parallellenkern ermöglicht wird. Hierdurch kann es zu einer Beeinträchtigung des Wägevorganges kommen. Since the wishbones have a fixed length, they hinder somewhat the vertical movement of the sack chair column, as made possible by the parallel brackets. This can adversely affect the weighing process.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Sackfüllmaschine der eingangs erwähnten Art so auszubilden, daß eine Kippbewegung der Sackstuhlsäule zwischen den Parallellenkern sicher verhindert wird und dennoch keine Beeinträchtigung der Vertikalbewegung der Sackstuhlsäule erfolgt.The invention is therefore based on the object of designing a sack filling machine of the type mentioned at the outset in such a way that a tilting movement of the sack chair column between the parallel cores is reliably prevented and yet there is no impairment of the vertical movement of the sack chair column.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß jeweils die oberen und unteren Parallellenker durch eine Koppelstange starr miteinander verbunden sind.This object is achieved in that the upper and lower parallel links are rigidly connected to each other by a coupling rod.

Durch diese überraschend einfache Maßnahme gelingt es, die Vorteile der Kompensation von Fertigungsungenauigkeiten durch die Gelenkköpfe beizubehalten und dennoch eine seitliche Kippbewegung sicher zu verhindern. Dabei bleibt die Vertikalbewegung der Sackstuhlsäule nach Wegfall der Querlenker völlig ungestört.By this surprisingly simple measure succeeds, the benefits of the compensation of manufacturing inaccuracies by the G elenkköpfe maintain and yet to prevent lateral tilting safe. The vertical movement of the sack chair column remains completely undisturbed after the wishbones are removed.

Sackfüllmaschinen, die zur Befüllung von Ventilsäcken vorgesehen sind, weisen eine in das Sackventil einführbare Füllröhre auf. Zum Zwecke der möglichst vollständigen Entleerung der Füllröhre nach dem Befüllvorgang für den einzelnen Sack ist die Füllröhre regelmäßig schräg nach unten geneigt, beispielsweise um 20° gegenüber der Horizontalen. Es hat sich gezeigt, daß beim Füllvorgang, währenddessen der Wägevorgang kontinuierlich stattfindet, ein Meßfehler entsteht. Untersuchungen haben ergeben, daß dieser Meßfehler darauf zurückzuführen ist, daß das Füllgut aus der Füllröhre kommend unter etwa dem Winkel der Füllröhre gegen die Seitenwand des Sackes prallt. Dabei wird eine lotrechte Kraftkomponente erzeugt, die das Wägeergebnis verfälscht.Sack filling machines which are provided for filling valve sacks have a filling tube which can be inserted into the sack valve. For the purpose of emptying the filling tube for the individual sack as completely as possible after the filling process, the filling tube is regularly inclined downwards, for example by 20 ° with respect to the horizontal. It has been shown that a measurement error occurs during the filling process, during which the weighing process takes place continuously. Studies have shown that this measurement error is due to the fact that the filling material coming from the filling tube hits the side wall of the sack at approximately the angle of the filling tube. This creates a vertical force component that falsifies the weighing result.

In einer bevorzugten Ausführungsform stehen die Parallellenker parallel zu einer schrägstehenden Füllröhre. In dem Beispiel der um 20° nach unten geneigten Füllröhre stehen somit auch die Parallellenker in einem Winkel von 20° nach unten geneigt. Dabei kann der Kraftaufnehmer dennoch horizontal ausgerichtet sein, so daß seine Meßrichtung lotrecht ausgerichtet ist.In a preferred embodiment, the parallel bars are ker parallel to an inclined filling tube. In the example of the filling tube inclined downwards by 20 °, the parallel links are also inclined downwards at an angle of 20 °. The force transducer can still be aligned horizontally so that its measuring direction is aligned perpendicular.

In einer weiteren Ausführungsform kann der Kraftaufnehmer jedoch auch so ausgerichtet sein, daß seine Meßrichtung senkrecht zu den Parallellenkern ausgerichtet ist, somit in dem genannten Beispiel um 20° aus der Lotrechten gekippt ist. Dies führt dazu, daß der Meßaufnehmer nur eine Gewichtskomponente mißt, nämlich das Gewicht multipliziert mit cos 20°. Um zu dem exakten Meßergebnis zu kommen, muß die Elektronik der Waage das Meßergebnis mit 1/cos 20° multiplizieren.In a further embodiment, however, the force transducer can also be oriented in such a way that its measuring direction is oriented perpendicular to the parallel core, so that in the example mentioned it is tilted 20 ° from the vertical. This leads to the sensor measuring only one weight component, namely the weight multiplied by cos 20 °. To get the exact measurement result, the electronics of the balance must multiply the measurement result by 1 / cos 20 °.

Durch die schräggestellten Parallellenker erzeugt das während der Befüllung auf die Seitenwand aufprallende Füllgut nun eine Kraft, die in Richtung der Längsachse der Parallellenker gerichtet ist. Diese Kraft beeinflußt daher den wägevorgang nicht. In dieser Ausführungsform läßt sich eine außerordentlich gute reproduzierbare Meßgenauigkeit erreichen. Die ggfs. notwendige Multiplikation mit 1/cos 20° durch die Elektronik stellt kein Problem dar.Due to the inclined parallel links, the filling material hitting the side wall during filling now generates a force that is directed in the direction of the longitudinal axis of the parallel links. This force therefore does not affect the weighing process. In this embodiment, extremely good reproducible measurement accuracy can be achieved. The necessary multiplication by 1 / cos 20 ° by the electronics is not a problem.

Die Erfindung soll im folgenden anhand eines in der Zeichnung dargestellten-Ausführungsbeispiels näher erläutert werden.The invention will be explained below with reference to an embodiment shown in the drawing.

In der Zeichnung ist ein fester Maschinenrahmen 1 gestrichel dargestellt. An mit dem hinteren Ende des Maschinenrahmens 1 verbundenen Zapfen 2 sind als Pendelkugellager ausgebildete Gelenkköpfe 3 von oberen Parallellenkern 4 und unteren Parallellenkern 5 angebracht. Die anderen Enden der Parallellenker sind über entsprechende Gelenkköpfe 3 mit einer oberen Achse 6 bzw. unteren Achse 7 verbunden. In der Mitte der Achsen 6,7 sind Hülsen 8 angeordnet, die eine Sackstuhlsäule 9 umschließen und fest halten. Die oberen Parallellenker 4 sind durch eine starre Koppelstange 10 und die unteren Parallellenker 5 durch eine starre Koppelstange 11 miteinander verbunden. Die Koppelstange 10 bzw. 11 bildet mit den zugehörigen Parallellenkern 4 bzw. 5 somit einen starren Rahmen, der ein seitliches Kippen der Achsen 6,7 aus der durch die Parallellenker 4 bzw. 5 gebildeten Ebene heraus verhindert. Somit wird auch ein Kippen der Sackstuhlsäule 9 verhindert.In the drawing, a fixed machine frame 1 is shown in broken lines. At the rear end of the machine frame 1 connected to pin 2 are formed as a spherical bearing G elenkköpfe 3 of upper parallel links 4 and lower parallel links 5 is attached. The other ends of the parallel links are connected to an upper axle 6 or lower axle 7 via corresponding joint heads 3. In the middle of the axes 6, 7, sleeves 8 are arranged, which enclose a bag chair column 9 and hold it firmly. The upper parallel link 4 are connected by a rigid coupling rod 10 and the lower parallel link 5 by a rigid coupling rod 11. The coupling rod 10 or 11 thus forms a rigid frame with the associated parallel link core 4 or 5, which prevents the axes 6, 7 from tilting sideways out of the plane formed by the parallel link 4 or 5. This also prevents the bag chair column 9 from tilting.

In dem dargestellten Ausführungsbeispiel sind die Parallellenker 4,5 um 20° nach unten aus der Horizontalen geneigt. Diese Neigung entspricht der Neigung der (nicht dargestellten) Füllröhre der Sackfüllmaschine. Am oberen Ende der Sackstuhlsäule 9 weist diese einen rechteckigen Rahmen 12 auf, dessen oberer Querbalken mit einem Kraftaufnehmer 13 verbunden ist. Der Rahmen 12 ist aus der Vertikalen um 20° nach vorn geneigt, so daß er senkrecht zu der durch die Parallellenker 4 bzw. 5 gebildeten Ebenen steht.In the illustrated embodiment, the parallel links 4,5 are inclined 20 ° downward from the horizontal. This inclination corresponds to the inclination of the filling tube (not shown) of the bag filling machine. At the upper end of the bag chair column 9, this has a rectangular frame 12, the upper cross bar of which is connected to a force transducer 13. The frame 12 is inclined forwards from the vertical by 20 ° so that it is perpendicular to the planes formed by the parallel links 4 and 5, respectively.

Der Kraftaufnehmer 13 ist so ausgerichtet, daß seine wirksame Meßrichtung senkrecht zu den Lenkern 4 bzw. 5 - und somit auch senkrecht zu dem oberen Querbalken des Rahmens 12 - ausgerichtet ist. In dem dargestellten Ausführungsbeispiel ist der Kraftaufnehmer 13 durch einen Biegestab gebildet, der parallel zu den Parallellenkern 4 bzw. 5 an dem Maschinenrahmen 1 befestigt ist.The force transducer 13 is oriented such that its effective measuring direction is oriented perpendicular to the links 4 and 5 - and thus also perpendicular to the upper crossbar of the frame 12. In the exemplary embodiment shown, the force transducer 13 is formed by a bending rod, which is attached to the machine frame 1 parallel to the parallel core 4 or 5.

Somit ergibt sich, daß in dem dargestellten Ausführungsbeispiel die Parallellenker 4 bzw. 5 parallel zu der Füllröhre der Sackfüllmaschine und parallel zur Längsachse des als Kraftaufnehmer 13 dienenden Biegestabs stehen.It follows that in the illustrated embodiment, the parallel links 4 and 5 are parallel to the filling tube of the bag filling machine and parallel to the longitudinal axis of the bending rod serving as a force transducer 13.

Es ist ohne weiteres ersichtlich, daß bei dieser Anordnung der Kraftaufnehmer 13 nicht das Gewicht G des gefüllten Sackes, sondern eine Gewichtskomponente G cos 20° mißt. Die Auswertungselektronik wird daher so eingestellt, daß sie das von dem Kraftaufnehmer 13 gemessene Gewicht mit dem konstanten Faktor 1/cos 20° multipliziert. Auf diese Weise wird der richtige Absolutwert durch die Wägeeinrichtung ermittelt.It is readily apparent that in this arrangement the force transducer 13 does not measure the weight G of the filled bag, but a weight component G cos 20 °. The evaluation electronics is therefore set so that it multiplies the weight measured by the force transducer 13 by the constant factor 1 / cos 20 °. In this way, the correct absolute value is determined by the weighing device.

Claims (3)

1. Sackfüllmaschine mit einer elektronischen Wägeeinrichtung, die einen von einer Sackstuhlsäule (9) beaufschlagten Kraftaufnehmer (13) aufweist, und mit einer Sackstuhlführung, die aus zwei oberen Parallellenkern (4) und zwei unteren Parallellenkern (5) besteht, die jeweils beidseitig der Sackstuhlsäule (9) angeordnet sind und deren beide Lagerstellen als Gelenkköpfe (3) ausgebildet sind, dadurch gekennzeichnet, daß die beiden oberen Parallellenker (4) und die beiden unteren Parallellenker (5) durch je eine Koppelstange (10,11) starr miteinander verbunden sind1. S ack filling machine with an electronic weighing device, which has a force transducer (13) acted upon by a sack chair column (9), and with a sack chair guide, which consists of two upper parallel core (4) and two lower parallel core (5), each on both sides of the Sack chair column (9) are arranged and the two bearing points are designed as joint heads (3), characterized in that the two upper parallel links (4) and the two lower parallel links (5) are each rigidly connected to one another by a coupling rod (10, 11) 2. Sackfüllmaschine nach Anspruch 1 mit einer schräg angeordneten Füllröhre für Ventilsäcke, dadurch gekennzeichnet, daß die Parallellenker (4,5) parallel zur Füllröhre stehen.2. Sack filling machine according to claim 1 with an obliquely arranged filling tube for valve bags, characterized in that the parallel links (4,5) are parallel to the filling tube. 3. Sackfüllmaschine nach Anspruch 2, dadurch gekennzeichnet, daß die Meßrichtung des Kraftaufnehmers (13) senkrecht zu den Parallellenkern (4,5) ausgerichtet ist.3. Sack filling machine according to claim 2, characterized in that the measuring direction of the force transducer (13) is aligned perpendicular to the parallel core (4,5).
EP87107863A 1986-06-03 1987-05-30 Machine for filling bags Expired EP0248371B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87107863T ATE44925T1 (en) 1986-06-03 1987-05-30 BAG FILLING MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3618648 1986-06-03
DE19863618648 DE3618648A1 (en) 1986-06-03 1986-06-03 BAG FILLING MACHINE

Publications (2)

Publication Number Publication Date
EP0248371A1 true EP0248371A1 (en) 1987-12-09
EP0248371B1 EP0248371B1 (en) 1989-07-26

Family

ID=6302189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107863A Expired EP0248371B1 (en) 1986-06-03 1987-05-30 Machine for filling bags

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US (1) US4708216A (en)
EP (1) EP0248371B1 (en)
AT (1) ATE44925T1 (en)
AU (1) AU582086B2 (en)
CA (1) CA1277644C (en)
DE (2) DE3618648A1 (en)
ES (1) ES2010690B3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735494A (en) * 1996-03-07 1998-04-07 Kurk; Robert Bag holder
US6894232B2 (en) * 2002-08-12 2005-05-17 Mettler-Toledo Bagger scale

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH444740A (en) * 1965-11-09 1967-09-30 Nakashima Shigeo Method and device for automatically measuring and bagging a predetermined amount of bulk material
DE2312851A1 (en) * 1973-03-15 1974-09-19 Behn Verpackung Erwin WEIGHING DEVICE FOR VALVE BAG FILLING MACHINES
DE2704138A1 (en) 1977-02-02 1978-08-03 Natronag Papierprod Gmbh Sack supporting column parallel guide - has top and bottom parallel links with pivot heads and length adjustment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US447686A (en) * 1891-03-03 Bag-holder
US1520372A (en) * 1922-04-27 1924-12-23 Paul R Syers Combined laundry-bag holder and weight indicator
US3620317A (en) * 1970-05-04 1971-11-16 Nelson R Henry Automatic filling and weighing mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH444740A (en) * 1965-11-09 1967-09-30 Nakashima Shigeo Method and device for automatically measuring and bagging a predetermined amount of bulk material
DE2312851A1 (en) * 1973-03-15 1974-09-19 Behn Verpackung Erwin WEIGHING DEVICE FOR VALVE BAG FILLING MACHINES
DE2704138A1 (en) 1977-02-02 1978-08-03 Natronag Papierprod Gmbh Sack supporting column parallel guide - has top and bottom parallel links with pivot heads and length adjustment

Also Published As

Publication number Publication date
ES2010690B3 (en) 1989-12-01
ATE44925T1 (en) 1989-08-15
DE3618648C2 (en) 1988-03-10
DE3618648A1 (en) 1987-12-10
DE3760355D1 (en) 1989-08-31
EP0248371B1 (en) 1989-07-26
AU7367187A (en) 1987-12-10
AU582086B2 (en) 1989-03-09
CA1277644C (en) 1990-12-11
US4708216A (en) 1987-11-24

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