EP0547297B1 - Device for clamping bags - Google Patents

Device for clamping bags Download PDF

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Publication number
EP0547297B1
EP0547297B1 EP92113962A EP92113962A EP0547297B1 EP 0547297 B1 EP0547297 B1 EP 0547297B1 EP 92113962 A EP92113962 A EP 92113962A EP 92113962 A EP92113962 A EP 92113962A EP 0547297 B1 EP0547297 B1 EP 0547297B1
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EP
European Patent Office
Prior art keywords
pairs
bag
end faces
axes
clamps
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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.)
Expired - Lifetime
Application number
EP92113962A
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German (de)
French (fr)
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EP0547297A1 (en
Inventor
Karl-Wilhelm Kader
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHRONOS HOLDING LTD
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Chronos Richardson GmbH
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Publication of EP0547297A1 publication Critical patent/EP0547297A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/06—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers adapted to support containers or wrappers
    • B65B39/08—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers adapted to support containers or wrappers by means of clamps

Definitions

  • the invention relates to a device comprising a filler neck and a bag clamp arrangement for holding a bag to be filled, in particular a gusseted bag, to the filler neck, which has a housing part with a substantially rectangular cross section, which has two end faces and two expansion flaps, which are perpendicular to the end faces mentioned horizontal axes are pivotally held on the housing part, have right-angled baffles, with a first pair of clamps, each having clamping bodies, which can be pivoted in opposite directions on pivot levers about first horizontal axes and bear against the outer surfaces of the opened spreading flaps, around opposing first sack wall parts on the filler neck to hold, and with second pairs of clamps, each having pairs of clamping bodies, which can be pivoted relative to one another about second axes lying approximately parallel to the first axes, and on longer pivot levers, which the zuv hold the aforementioned axes in order to move axes perpendicular to the first and second axes in the opposite direction towards the end faces,
  • a device of this type is known from the 3200 Series Slidell Matic System from Slidell, Owatonna, USA.
  • a system of this type is particularly suitable for the handling of Side gusseted bags, in which the bags are already pulled together with the side gussets held together and then taken over by the second pair of clamps, so that the side gussets in the area of the bag opening do not open during the subsequent filling. This eliminates the need to fold back the side gussets after filling, ie to re-arrange them to enable the bag to subsequently close, in particular to fold the bag edge over before final sewing or gluing.
  • the devices mentioned are also favorable for simple flat sacks in the same way, in particular with a so-called "pinch-top” closure, in which the upper edge of the sack is also folded over for closure. It is also necessary here that the position of the side pocket fold in the area of the bag opening is clearly retained, i.e. H. that the two sack walls are held on top of each other in the area of the side edges.
  • the sacks are held by the first pairs of clamps on the surfaces of the expansion flaps after being placed on the filler neck and are fixed by the second pairs of clamps at a distance from the end faces in the region of their side edges.
  • Suction shafts are then inserted into the still open sack opening in front of the end faces of the filler neck, through which the air displaced during filling and in particular the dust whirled up with it are to be sucked off.
  • the second pairs of terminals are approximated to the suction shafts. The resulting negative pressure promotes tight contact with the flat surfaces of the suction shafts and the expansion flaps.
  • a filler neck with a clamp arrangement of the generic type in which a bag is each pushed over the filler neck and the second pair of clamps, these second pairs of clamps then reaching from the inside into the side folds and keeping the side folds fixed during the spreading of the spreading flaps and the filling of the sack.
  • essential parts of the bag wall are at a distance from the filler neck, so that a significant amount of dust from the filling material can be released during filling.
  • the suction means provided in the aforementioned device are not available here.
  • the invention has for its object to provide a device of the generic type in such a way that when filling, even without using suction means introduced into the bag opening outside the nozzle cross-section, a tight contact of the bag with the filling nozzle is ensured everywhere.
  • the solution to this is that the end faces run down wedge-shaped and that the baffles of the expansion flaps are located within the end faces, that the clamping bodies of the second pair of clamps are individually mounted on individual short pivot levers and can be pivoted in opposite directions to one another, and that the pairs of the clamping bodies of the second pairs of clamps each have angled second surface parts to the surface parts mentioned, which are adapted to the end faces and the guide plates of the swung-out expansion flaps in order to hold the remaining free bag wall parts on the filler neck.
  • the second additional pivoting movement of the second clamping body can preferably be adjusted in its path length so that the bag wall assumes an almost wrinkle-free course along the surfaces of the filling nozzle and the baffles of the spreading flaps when the clamping bodies are pivoted against the end faces of the suction nozzle.
  • it is also harmless if there is a certain free length in the course of the edge of the bag opening, since a slight unfolding at the edge of the bag opening is harmless, since the clamping body ensures that the bag is firmly pressed all around. Unfolding of the sack edges is prevented by grasping the sack in the area of the side edges.
  • recesses extending along the oblique boundary edges of the wedge-shaped end faces are provided on the second surfaces of the second clamping elements in order to be able to ensure uniform pressure on the end faces and guide plates of the swung-out expansion flaps.
  • the lever arms of the pairs of the second clamping bodies are kept swinging and automatically adjustable on their axes in the two longer lever arms, so that a uniform contact occurs when pressed against the surfaces of the filler neck.
  • the clamping elements are usually made of rubber in the area of their contacting surfaces or covered with rubber.
  • adjusting elements which in the case of the first pairs of terminals are preferably made independently of one another, but in the case of the clamping elements of the second pairs of terminals such that an adjusting element jointly generates the first movement of the shorter pivot levers, the movement of which is synchronized via a coupling member and that the second movement of the longer pivot levers also takes place via a common actuator, but these pivot arms can be pivoted parallel to one another.
  • a filler neck 1 of essentially rectangular cross section is shown, which comprises a lower housing part 2, the end faces 3 of which run downward in a V-shape, and the side faces 4 of which are only partially recognizable.
  • the lower housing part 2 is welded to the filler neck 1.
  • the end faces 3 are screwed to it by means of screws 5 and have upper attachment surfaces 6 which are laterally surrounded by tabs 7.
  • the tabs 7 are connected at their inner ends to pivot pins 8 for expansion flaps 10 and at their outer ends to a support tube 28.
  • Two-arm levers 9a, 9b of unequal length are fastened to the support tube 28, and expansion flaps 10 are welded to one end thereof.
  • An actuating cylinder 11 engages on the longer lever 9b by means of an axis of rotation 12.
  • the upper end of the actuating cylinder 21 is suspended from a tab 31 which is firmly connected to the filler neck 1.
  • the positioning cylinder 11 is mounted by means of an axis of rotation 32 which is mounted in a tab 31 on the filler neck.
  • the spreading flaps pivot laterally about the axis of rotation 8 to the outside.
  • a further axis of rotation 13 on which pairs of triangular plates 14 are rotatably held together, to which clamping elements 15 abutting against the flaps are fastened.
  • the sheets 14 are actuated via a connecting axis 16 by a further actuating cylinder 17 which is pivotally held in an axis 18 between the levers 9a, 9b.
  • the function of the aforementioned parts is as follows.
  • the spreading flaps 10 can be opened or closed by means of the adjusting elements 11, the opening taking place in particular after a sack has been put on.
  • the actuating means of the clamping elements 15 fastened to the expansion flaps 10 are taken along.
  • actuating the actuating elements 17 these can be pivoted away from them regardless of the position of the spreading flaps 10, so that a sack can be put on and pressed against it, so that the edge of the sack is pressed against the latter, in particular in the open position of the spreading flaps.
  • fork-shaped double lever arms 19 are arranged, which are fastened to tabs 33 so as to be rotatable about axes 34, which are also firmly connected to the filler neck 1.
  • the one-armed lever arms 19 are actuated by means of a common actuating element 21, which is mounted in axes of rotation 29 and connects the opposing bridge-shaped swivel arms 19 to one another and moves them away from the filler neck, in particular from the end faces 3 of the lower housing part 2, and towards them.
  • the swivel arms 19 can be displaced parallel to one another about axes of rotation 34.
  • a pair of pivot arms 22 is pivotally mounted about axes of rotation 20.
  • the swivel arms 22 are designed as two-armed levers and are operated in opposite directions by means of a common actuating element 23, a coupling 24, which is articulated to both, forcing a synchronous movement.
  • the actuating element 23 is mounted on the pivot arms 22 in axes of rotation 30.
  • Clamping elements 25 are arranged at the lower end of the swivel arms 22. When actuating the actuating element 23, the actuating elements 25 lying in front of an end face 3 are brought together in such a way that they can hold and hold together a pushed-on sack in the region of the side folds with first pressing faces 26.
  • the pairs of two clamped clamping elements 25 are then pressed with their second pressing surfaces against the end faces 3 of the lower housing part 2, so that they press the sack 27, which was still loosely opened, completely onto the end faces with the second contact surfaces 27.
  • the mounting of the levers 22 about their axes of rotation 20 is shown in partial section and shows an adjustable storage to this axis, so that the levers 22 can adjust themselves when the clamping elements 25 are pressed.
  • the fork-shaped swivel arms 19 are each connected to one another via a cross member 38.
  • An adjusting device 36 attached to tabs 35 limits the pivoting range of the lever arms 19.
  • the tabs 35 are in turn firmly connected to the bag neck 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Package Closures (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

Bag-clamping device for the retention of a bag to be filled, especially a side-folding bag, on a filling connection, the bag-clamping device having the following features: a first pair of clamps having respective clamping bodies (15), in order to retain mutually opposite first bag-wall parts on the filling connection, and a second pair of clamps having respective pairs of clamping bodies (25), the pairs of second clamping bodies having first surface parts (26) which are laid against one another in pairs in such a way that bag-wall parts located in front of the end faces are grasped and held in the edge region, and respective second surface parts (27) which are angled relative to these and which are matched with the end faces (3) and to the guide plates of the swung-out spreading flaps (10), in order to retain the remaining free bag-wall parts on the filling connection. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung aus einem Abfüllstutzen und einer Sackklemmenanordnung zum Festhalten eines abzufüllenden Sackes, insbesondere eines Seitenfaltensackes, an dem Abfüllstutzen, der ein Gehäuseteil mit im wesentlichen rechteckigem Querschnitt aufweist, das zwei Stirnflächen und zwei Spreizklappen besitzt, die um senkrecht zu den genannten Stirnflächen liegende Achsen am Gehäuseteil schwenkbar gehalten sind, rechtwinklig angesetzte Leitbleche haben, mit einem ersten Klemmenpaar, das jeweils Klemmkörper aufweist, die an Schwenkhebeln um erste horizontale Achsen gegensinnig schwenkbar sind und sich gegen die Außenflächen der geöffneten Spreizklappen anlegen, um einander gegenüberliegende erste Sackwandteile am Abfüllstutzen zu halten, und mit zweiten Klemmenpaaren, die jeweils Paare von Klemmkörpern aufweist, die um etwa parallel zu den ersten Achsen liegende zweite Achsen relativ zueinander schwenkbar ist, und die an längeren Schwenkhebeln, die die zuvorgenannten Achsen halten, um zu den ersten und zweiten Achsen senkrechte Achsen gegensinnig in Richtung auf die Stirnflächen zu beweglich sind, wobei die Paare der Klemmkörper der zweiten Klemmenpaare Oberflächenteile aufweisen, die sich paarweise so aneinanderlegen, daß vor den Stirnflächen liegende Sackwandteile im Kantenbereich erfaßt und gehalten werden.The invention relates to a device comprising a filler neck and a bag clamp arrangement for holding a bag to be filled, in particular a gusseted bag, to the filler neck, which has a housing part with a substantially rectangular cross section, which has two end faces and two expansion flaps, which are perpendicular to the end faces mentioned horizontal axes are pivotally held on the housing part, have right-angled baffles, with a first pair of clamps, each having clamping bodies, which can be pivoted in opposite directions on pivot levers about first horizontal axes and bear against the outer surfaces of the opened spreading flaps, around opposing first sack wall parts on the filler neck to hold, and with second pairs of clamps, each having pairs of clamping bodies, which can be pivoted relative to one another about second axes lying approximately parallel to the first axes, and on longer pivot levers, which the zuv hold the aforementioned axes in order to move axes perpendicular to the first and second axes in the opposite direction towards the end faces, the pairs of the clamping bodies of the second pairs of clamps having surface parts which lie in pairs in such a way that sack wall parts lying in front of the end faces are detected in the edge region and being held.

Eine Vorrichtung dieser Art ist durch das 3200 Series Slidell Matic System der Firma Slidell, Owatonna, USA bekannt. Ein System dieser Art ist besonders geeignet für die Handhabung von Seitenfaltensäcken, bei denen die Säcke bereits mit zusammengehaltenen Seitenfalten über den Stutzen gezogen und dann von dem zweiten Klemmenpaar übernommen werden, so daß beim anschließenden Füllen die Seitenfalten im Bereich der Sacköffnung nicht aufspringen. Hiermit entfällt die Notwendigkeit, die Seitenfalten nach dem Befüllen zurückzufalten, d. h. neu einzurichten, um ein anschließendes Schließen des Sackes zu ermöglichen, insbesondere ein Umschlagen des Sackrandes vor dem endgültigen Vernähen oder Verkleben.A device of this type is known from the 3200 Series Slidell Matic System from Slidell, Owatonna, USA. A system of this type is particularly suitable for the handling of Side gusseted bags, in which the bags are already pulled together with the side gussets held together and then taken over by the second pair of clamps, so that the side gussets in the area of the bag opening do not open during the subsequent filling. This eliminates the need to fold back the side gussets after filling, ie to re-arrange them to enable the bag to subsequently close, in particular to fold the bag edge over before final sewing or gluing.

Die genannten Vorrichtungen sind jedoch in gleicher Weise auch für einfache Flachsäcke günstig, insbesondere mit sogenanntem "Pinch-top"-Verschluß, bei denen der obere Sackrand zum Verschließen ebenfalls umgeschlagen wird. Auch hierbei ist es erforderlich, daß im Bereich der Sacköffnung die seitliche Sackfalte in ihrer Lage eindeutig erhalten bleibt, d. h. daß auch hier die beiden Sackwände im Bereich der Seitenkanten aufeinanderliegend festgehalten werden.However, the devices mentioned are also favorable for simple flat sacks in the same way, in particular with a so-called "pinch-top" closure, in which the upper edge of the sack is also folded over for closure. It is also necessary here that the position of the side pocket fold in the area of the bag opening is clearly retained, i.e. H. that the two sack walls are held on top of each other in the area of the side edges.

Bei der obengenannten bekannten Vorrichtung werden die Säcke nach dem Aufstecken auf den Abfüllstutzen von den ersten Klemmenpaaren an den Oberflächen der Spreizklappen festgehalten und von den zweiten Klemmenpaaren in einigem Abstand vor den Stirnflächen im Bereich ihrer Seitenkanten fixiert. Anschließend werden Absaugschächte in die noch offene Sacköffnung vor den Stirnflächen des Abfüllstutzens eingeführt, durch die die beim Befüllen verdrängte Luft und insbesondere der damit aufgewirbelte Staub abgesaugt werden sollen. Die zweiten Klemmenpaare werden hierzu an die Absaugschächte angenähert. Ein dichtes Anliegen an den ebenen Oberflächen der Absaugschächte und der Spreizklappen wird durch den entstehenden Unterdruck gefördert.In the known device mentioned above, the sacks are held by the first pairs of clamps on the surfaces of the expansion flaps after being placed on the filler neck and are fixed by the second pairs of clamps at a distance from the end faces in the region of their side edges. Suction shafts are then inserted into the still open sack opening in front of the end faces of the filler neck, through which the air displaced during filling and in particular the dust whirled up with it are to be sucked off. For this purpose, the second pairs of terminals are approximated to the suction shafts. The resulting negative pressure promotes tight contact with the flat surfaces of the suction shafts and the expansion flaps.

Aus der US-A-4 322 932 ist ein Abfüllstutzen mit einer Klemmenanordnung der gattungsgemäßen Art bekannt, bei dem ein Sack jeweils über den Abfüllstutzen und die zweiten Klemmenpaare geschoben wird, wobei diese zweiten Klemmenpaare dann von innen in die Seitenfalten greifen und die Seitenfalten während des Spreizens der Spreizklappen und des Befüllens des Sackes fixiert halten. Beim Befüllen liegen wesentliche Teile der Sackwandung mit Abstand zum Abfüllstutzen, so daß eine nennenswerte Staubmenge des Befüllgutes während des Befüllens freigesetzt werden kann. Die bei der zuvor genannten Vorrichtung vorgesehen Absaugmittel sind hierbei nicht vorhanden.From US-A-4 322 932 a filler neck with a clamp arrangement of the generic type is known, in which a bag is each pushed over the filler neck and the second pair of clamps, these second pairs of clamps then reaching from the inside into the side folds and keeping the side folds fixed during the spreading of the spreading flaps and the filling of the sack. When filling, essential parts of the bag wall are at a distance from the filler neck, so that a significant amount of dust from the filling material can be released during filling. The suction means provided in the aforementioned device are not available here.

Aus der US-A-2 890 006 ist ein Abfüllstutzen von kreisförmigem Querschnitt mit einer Klemmenanordnung bekannt, bei dem zweite Klemmenpaare die Seitenfalten des Sackes von außen fixieren. Die Bewegung dieser Klemmenpaarung erschöpft sich in einer reinen Schließbewegung zum Einklemmen der Seitenfalten. In eine Wechselwirkung mit Oberflächenteilen des Abfüllstutzens treten diese zweiten Klemmenpaare nicht.From US-A-2 890 006 a filler neck of circular cross-section with a clamp arrangement is known, in which second pairs of clamps fix the side folds of the sack from the outside. The movement of this pair of clamps is exhausted in a pure closing movement for clamping the side folds. These second pairs of clamps do not interact with surface parts of the filler neck.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der gattungsgemäßen Art so auszubilden, daß beim Abfüllen auch ohne Verwendung von außerhalb des Stutzenquerschnittes in die Sacköffnung eingeführten Absaugmittel überall eine dichte Anlage des Sackes am Abfüllstutzen sicherstellt. Die Lösung hierfür besteht darin, daß die Stirnflächen nach unten keilförmig zulaufen und daß die Leitbleche der Spreizklappen innerhalb der Stirnflächen liegen, daß die Klemmkörper der zweiten Klemmenpaare an einzelnen kurzen Schwenkhebeln jeweils einzeln gelagert und gegensinnig zueinander schwenkbar sind, und daß die Paare der Klemmkörper der zweiten Klemmenpaare jeweils zu den genannten Oberflächenteilen abgewinkelte zweite Oberflächenteile aufweisen, die an die Stirnflächen und die Leitbleche der ausgeschwenkten Spreizklappen angepaßt sind, um die übrigen freien Sackwandteile am Abfüllstutzen zu halten. Erfindungsgemäß kann hierdurch eine nahezu vollständige Abdichtung erfolgen, wobei ggfs. eine notwendige Entlüftung über das Innere des Abfüllstutzens erfolgen kann. Die zweite zusätzliche Schwenkbewegung der zweiten Klemmkörper kann vorzugsweise in ihrer Weglänge so eingestellt werden, daß die Sackwandung einen nahezu faltenfreien Verlauf entlang der Oberflächen des Abfüllstutzens und der Leitbleche der Spreizklappen einnimmt, wenn die Klemmkörper gegen die Stirnflächen des Absaugstutzens geschwenkt sind. Allerdings ist es auch unschädlich, wenn im Verlauf der Sacköffnungskante eine gewisse freie Länge vorhanden ist, da eine geringe Auffaltung an der Sacköffnungskante unschädlich ist, da durch die Klemmkörper rundum ein festes Andrücken des Sackes sichergestellt ist. Ein Auffalten der Sackkanten wird durch das vorherige Fassen des Sackes im Bereich der Seitenkanten verhindert. In besonders günstiger Weise sind an den zweiten Oberflächen der zweiten Klemmelemente längs der schrägen Begrenzungskanten der keilförmigen Stirnflächen verlaufende Rücksprünge vorgesehen, um gleichmäßigen Andruck an Stirnflächen und Leitblechen der ausgeschwenkten Spreizklappen sicherstellen zu können. In günstiger Weise sind weiterhin die Hebelarme der Paare der zweiten Klemmkörper pendelnd selbsttätig einstellbar auf ihren Achsen in den beiden längeren Hebelarmen gehalten, so daß sich eine gleichmäßige Anlage beim Andrücken an die Flächen des Abfüllstutzens einstellt. Um Beschädigungen des Sackmaterials zu vermeiden, sind die Klemmelemente üblicherweise im Bereich ihrer berührenden Oberflächen aus Gummi hergestellt oder mit Gummi belegt. Weitere bevorzugte Ausgestaltungen betreffen die Ausführungen der Verstellelemente, die im Fall der ersten Klemmenpaare vorzugsweise voneinander unabhängig ausgeführt sind, bei den Klemmelementen der zweiten Klemmenpaare jedoch so, daß ein Verstellelement die erste Bewegung der kürzeren Schwenkhebel gemeinsam erzeugt, wobei deren Bewegung über ein Koppelglied synchronisiert ist und daß die zweite Bewegung der längeren Schwenkhebel ebenfalls über ein gemeinsames Stellglied erfolgt, wobei diese Schwenkarme jedoch parallel miteinander verschwenkbar sind.The invention has for its object to provide a device of the generic type in such a way that when filling, even without using suction means introduced into the bag opening outside the nozzle cross-section, a tight contact of the bag with the filling nozzle is ensured everywhere. The solution to this is that the end faces run down wedge-shaped and that the baffles of the expansion flaps are located within the end faces, that the clamping bodies of the second pair of clamps are individually mounted on individual short pivot levers and can be pivoted in opposite directions to one another, and that the pairs of the clamping bodies of the second pairs of clamps each have angled second surface parts to the surface parts mentioned, which are adapted to the end faces and the guide plates of the swung-out expansion flaps in order to hold the remaining free bag wall parts on the filler neck. According to the invention, this can result in an almost complete seal, whereby if necessary, necessary ventilation can take place via the inside of the filler neck. The second additional pivoting movement of the second clamping body can preferably be adjusted in its path length so that the bag wall assumes an almost wrinkle-free course along the surfaces of the filling nozzle and the baffles of the spreading flaps when the clamping bodies are pivoted against the end faces of the suction nozzle. However, it is also harmless if there is a certain free length in the course of the edge of the bag opening, since a slight unfolding at the edge of the bag opening is harmless, since the clamping body ensures that the bag is firmly pressed all around. Unfolding of the sack edges is prevented by grasping the sack in the area of the side edges. In a particularly favorable manner, recesses extending along the oblique boundary edges of the wedge-shaped end faces are provided on the second surfaces of the second clamping elements in order to be able to ensure uniform pressure on the end faces and guide plates of the swung-out expansion flaps. In an advantageous manner, the lever arms of the pairs of the second clamping bodies are kept swinging and automatically adjustable on their axes in the two longer lever arms, so that a uniform contact occurs when pressed against the surfaces of the filler neck. To avoid damage to the bag material, the clamping elements are usually made of rubber in the area of their contacting surfaces or covered with rubber. Further preferred configurations relate to the designs of the adjusting elements, which in the case of the first pairs of terminals are preferably made independently of one another, but in the case of the clamping elements of the second pairs of terminals such that an adjusting element jointly generates the first movement of the shorter pivot levers, the movement of which is synchronized via a coupling member and that the second movement of the longer pivot levers also takes place via a common actuator, but these pivot arms can be pivoted parallel to one another.

Ein bevorzugtes Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt.

Fig. 1
zeigt eine erfindungsgemäße Sackklemmenvorrichtung an einem Abfüllstutzen in Seitenansicht;
Fig. 2
zeigt eine Sackklemmenvorrichtung nach Fig. 1 in Ansicht auf die Stirnseiten des Abfüllstutzens.
A preferred embodiment of the invention is shown in the drawings.
Fig. 1
shows a bag clamp device according to the invention on a filler neck in side view;
Fig. 2
shows a bag clamp device according to Fig. 1 in view of the end faces of the filler neck.

Übereinstimmende Teile sind mit gleichen Bezugsziffern versehen. Die Beschreibung erfolgt nachstehend für beide Darstellungen gemeinsam. Im einzelnen ist ein Abfüllstutzen 1 von im wesentlichen rechteckigem Querschnitt gezeigt, der ein unteres Gehäuseteil 2 umfaßt, dessen Stirnflächen 3 V-förmig nach unten auslaufen, und dessen Seitenflächen 4 nur teilweise zu erkennen sind.Matching parts are provided with the same reference numbers. The description is given below for both representations. In detail, a filler neck 1 of essentially rectangular cross section is shown, which comprises a lower housing part 2, the end faces 3 of which run downward in a V-shape, and the side faces 4 of which are only partially recognizable.

Das untere Gehäuseteil 2 ist am Abfüllstutzen 1 angeschweißt. Die Stirnflächen 3 sind mittels Schrauben 5 daran angeschraubt und haben obere Ansatzflächen 6, die von Laschen 7 seitlich umfaßt werden. Die Laschen 7 sind mit ihren inneren Enden mit Drehzapfen 8 für Spreizklappen 10 verbunden und an ihren äußeren Enden mit einem Trägerrohr 28. An dem Trägerrohr 28 sind zweiarmige Hebel 9a, 9b ungleicher Länge befestigt, an deren einem Ende Spreizklappen 10 angeschweißt sind. Am längeren der Hebel 9b greift ein Stellzylinder 11 mittels einer Drehachse 12 an. Das obere Ende des Stellzylinders 21 ist an einer Lasche 31 aufgehängt, die mit dem Abfüllstutzen 1 fest verbunden ist. Die Lagerung des Stellzylinders 11 erfolgt mittels einer Drehachse 32, die in einer Lasche 31 am Abfüllstutzen gelagert ist. Bei Betätigung der Stellzylinder 11 schwenken die Spreizklappen um die Drehachse 8 seitlich nach außen. Zwischen den laschenförmigen Hebeln 9a, 9b ist jeweils eine weitere Drehachse 13 vorgesehen, auf der Paare von Dreiecksblechen 14 gemeinsam drehbar gehalten sind, an denen gegen die Klappen anschlagende Klemmelemente 15 befestigt sind. Die Bleche 14 werden über eine verbindende Achse 16 von einem weiteren Stellzylinder 17 betätigt, das in einer Achse 18 schwenkbar zwischen den Hebeln 9a, 9b gehalten ist.The lower housing part 2 is welded to the filler neck 1. The end faces 3 are screwed to it by means of screws 5 and have upper attachment surfaces 6 which are laterally surrounded by tabs 7. The tabs 7 are connected at their inner ends to pivot pins 8 for expansion flaps 10 and at their outer ends to a support tube 28. Two-arm levers 9a, 9b of unequal length are fastened to the support tube 28, and expansion flaps 10 are welded to one end thereof. An actuating cylinder 11 engages on the longer lever 9b by means of an axis of rotation 12. The upper end of the actuating cylinder 21 is suspended from a tab 31 which is firmly connected to the filler neck 1. The positioning cylinder 11 is mounted by means of an axis of rotation 32 which is mounted in a tab 31 on the filler neck. When actuating the actuating cylinder 11, the spreading flaps pivot laterally about the axis of rotation 8 to the outside. Between the tab-shaped levers 9a, 9b there is in each case a further axis of rotation 13, on which pairs of triangular plates 14 are rotatably held together, to which clamping elements 15 abutting against the flaps are fastened. The sheets 14 are actuated via a connecting axis 16 by a further actuating cylinder 17 which is pivotally held in an axis 18 between the levers 9a, 9b.

Die Funktion der zuvor genannten Teile ist folgende. Mittels der Stellelemente 11 können die Spreizklappen 10 geöffnet oder geschlossen werden, wobei das Öffnen insbesondere nach dem Aufstecken eines Sackes erfolgt. Beim Öffnen und Schließen werden die Betätigungsmittel der an den Spreizklappen 10 befestigten Klemmelemente 15 jeweils mitgenommen. Durch Betätigung der Stellelemente 17 können diese unabhängig von der Stellung der Spreizklappen 10 von diesen weggeschwenkt werden, so daß das Aufstecken eines Sackes erfolgen kann, und an diese angedrückt werden, so daß der Sackrand insbesondere in der geöffneten Stellung der Spreizklappen an diese angedrückt wird.The function of the aforementioned parts is as follows. The spreading flaps 10 can be opened or closed by means of the adjusting elements 11, the opening taking place in particular after a sack has been put on. When opening and closing, the actuating means of the clamping elements 15 fastened to the expansion flaps 10 are taken along. By actuating the actuating elements 17, these can be pivoted away from them regardless of the position of the spreading flaps 10, so that a sack can be put on and pressed against it, so that the edge of the sack is pressed against the latter, in particular in the open position of the spreading flaps.

Jeweils vor der Ebene der Stirnflächen 3 sind gabelförmig ausgeführte doppelte Hebelarme 19 angeordnet, die um Achsen 34 drehbar an Laschen 33 befestigt sind, die ebenfalls mit dem Abfüllstutzen 1 fest verbunden sind. Die einarmigen Hebelarme 19 werden mittels eines gemeinsamen Stellelementes 21 betätigt, das in Drehachsen 29 gelagert ist und die gegenüberliegenden brückenförmigen Schwenkarme 19 miteinander verbindet und diese vom Abfüllstutzen, insbesondere von den Stirnflächen 3 des unteren Gehäuseteils 2 weg und auf diese zubewegt. Die Schwenkarme 19 sind dabei um Drehachsen 34 zueinander parallel verschiebbar.In each case in front of the plane of the end faces 3, fork-shaped double lever arms 19 are arranged, which are fastened to tabs 33 so as to be rotatable about axes 34, which are also firmly connected to the filler neck 1. The one-armed lever arms 19 are actuated by means of a common actuating element 21, which is mounted in axes of rotation 29 and connects the opposing bridge-shaped swivel arms 19 to one another and moves them away from the filler neck, in particular from the end faces 3 of the lower housing part 2, and towards them. The swivel arms 19 can be displaced parallel to one another about axes of rotation 34.

In jedem der brückenförmigen Schwenkarme 19 ist jeweils ein Paar von Schwenkarmen 22 um Drehachsen 20 schwenkbar gelagert. Die Schwenkarme 22 sind als zweiarmige Hebel ausgeführt und werden mittels eines gemeinsamen Stellelementes 23 entgegengesetzt betätigt, wobei eine Koppel 24, die mit beiden gelenkig verbunden ist, eine synchrone Bewegung erzwingt. Das Stellelement 23 ist in Drehachsen 30 an den Schwenkarmen 22 gelagert. Am unteren Ende der Schwenkarme 22 sind Klemmelemente 25 angeordnet. Bei Betätigung des Stellelementes 23 werden jeweils die vor einer Stirnfläche 3 liegende Betätigungselemente 25 so zusammengeführt, daß sie mit ersten Andrückflächen 26 einen aufgeschobenen Sack im Bereich der Seitenfalten fassen und zusammenhalten können. Bei anschließender Betätigung des Stellelementes 21 werden dann die Paare von zwei zusammengeklemmten Klemmelementen 25 mit ihren zweiten Andrückflächen an die Stirnflächen 3 des unteren Gehäuseteils 2 angedrückt, so daß sie mit den zweiten Anlageflächen 27 den zuvor noch locker geöffneten Sack vollständig an die Stirnflächen anpressen. Die Lagerung der Hebel 22 auf um ihre Drehachsen 20 ist im Teilschnitt dargestellt und läßt eine zu dieser Achse einstellbare Lagerung erkennen, so daß sich die Hebel 22 beim Andrücken der Klemmelemente 25 selbsttätig einstellen können.In each of the bridge-shaped pivot arms 19, a pair of pivot arms 22 is pivotally mounted about axes of rotation 20. The swivel arms 22 are designed as two-armed levers and are operated in opposite directions by means of a common actuating element 23, a coupling 24, which is articulated to both, forcing a synchronous movement. The actuating element 23 is mounted on the pivot arms 22 in axes of rotation 30. Clamping elements 25 are arranged at the lower end of the swivel arms 22. When actuating the actuating element 23, the actuating elements 25 lying in front of an end face 3 are brought together in such a way that they can hold and hold together a pushed-on sack in the region of the side folds with first pressing faces 26. Upon subsequent actuation of the actuating element 21, the pairs of two clamped clamping elements 25 are then pressed with their second pressing surfaces against the end faces 3 of the lower housing part 2, so that they press the sack 27, which was still loosely opened, completely onto the end faces with the second contact surfaces 27. The mounting of the levers 22 about their axes of rotation 20 is shown in partial section and shows an adjustable storage to this axis, so that the levers 22 can adjust themselves when the clamping elements 25 are pressed.

Die gabelförmigen Schwenkarme 19 sind jeweils über eine Traverse 38 miteinander verbunden. Eine an Laschen 35 befestigte Einstellvorrichtung 36 limitiert den Schwenkbereich der Hebelarme 19. Die Laschen 35 sind wiederum fest mit dem Absackstutzen 1 verbunden.The fork-shaped swivel arms 19 are each connected to one another via a cross member 38. An adjusting device 36 attached to tabs 35 limits the pivoting range of the lever arms 19. The tabs 35 are in turn firmly connected to the bag neck 1.

Claims (5)

  1. A device consisting of a filling neck and a bag clamping assembly for holding a bag to be filled, especially a bag with side folds, at the filling neck (1) which comprises a housing part (2) having a substantially rectangular cross-section and two end faces (3) and two expanding flaps (10) which are held at the housing part (2) so as to be pivotable around axes (8) positioned perpendicularly relative to said end faces (3) and which are provided with guiding plates attached at right angles, with a first pair of clamps which comprises clamping members (15) which, on pivot levers (14), are pivotable in opposite directions around first horizontal axes (13) and rest against the outer faces of the open expanding flaps (10) for the purpose of holding opposed first bag wall parts at the filling neck, and with second pairs of clamps which each comprise pairs of clamping members (25), which are pivotable relative to one another around second axes (20) positioned approximately parallel relative to the first axes (8) and which, on longer pivot levers (19) holding the above-mentioned axes (20), are movable in opposite directions towards the end faces (3) around axes (34) extending perpendicularly relative to the first and second axes, with the pairs of clamping members (25) of the second pairs of clamps comprising surface parts (25) which, in pairs, contact one another in such a way that bag wall parts positioned in front of the end faces are gripped and held in their edge region,
    characterised in
    that the end faces (3) downwardly converge wedge-like and that the guiding plates of the expanding flaps are positioned inside the end faces; that the clamping members (25) of the second pairs of clamps are each individually supported on individual short pivot levers and are pivotable relative to one another in opposite directions; and that the pairs of clamping members (25) of the second pairs of clamps each comprise second surface parts (27) which are angled relative to said surface parts and which are adapted to the end faces (3) and guiding plates of the pivoted expanding flaps (10) for the purpose of holding the remaining free bag wall parts on the filling neck.
  2. A device according to claim 1,
    characterised in
    that the clamping members (15) of the first pair of clamps each comprise setting elements (11) which are independent of one another.
  3. A device according to claim 1,
    characterised in
    that for the first pivot movements of the pairs of second clamping members (25) there is provided a respective setting cylinder (23) and that the movements of the lever arms (22) are synchronised by a coupling device (24).
  4. A device according to any one of claims 1 to 3,
    characterised in
    that for the second pivot movement of the pairs of second clamping members there is provided a joint setting element (21) which engages the two lever arms (19) which are pivotable parallel relative to one another.
  5. A device according to any one of claims 1 to 4,
    characterised in
    that the lever arms (22) of the pairs of second clamping members are swingingly held on their axes (20) in the two lever arms (19) so as to automatically adjust themselves.
EP92113962A 1991-12-14 1992-08-17 Device for clamping bags Expired - Lifetime EP0547297B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4141254 1991-12-14
DE4141254A DE4141254A1 (en) 1991-12-14 1991-12-14 BAG CLAMP DEVICE

Publications (2)

Publication Number Publication Date
EP0547297A1 EP0547297A1 (en) 1993-06-23
EP0547297B1 true EP0547297B1 (en) 1996-10-30

Family

ID=6447043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92113962A Expired - Lifetime EP0547297B1 (en) 1991-12-14 1992-08-17 Device for clamping bags

Country Status (5)

Country Link
US (1) US5301492A (en)
EP (1) EP0547297B1 (en)
AT (1) ATE144745T1 (en)
CA (1) CA2085331C (en)
DE (2) DE4141254A1 (en)

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DE102004010500A1 (en) * 2004-03-04 2005-09-29 Schlösser GmbH Anlagentechnik Filling method and gripping device for a filling device

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US6119441A (en) * 1999-04-19 2000-09-19 Glopak Inc. Automatic bagging machine
US6550226B1 (en) 1999-10-27 2003-04-22 Gates Automation, Inc. Bag filling and sealing machine and method for handling bags
US6742321B2 (en) * 2002-09-30 2004-06-01 Gates Automation, Inc. Flange alignment and grasping assembly for bag handling apparatus
CA2465185A1 (en) 2004-04-26 2005-10-26 Stephane Marceau Bag filling and sealing apparatus for packing loose material
CN103879597A (en) * 2014-04-06 2014-06-25 周午贤 Automatic bag opening device used for packaging scales
CN103921989B (en) * 2014-04-12 2016-01-27 安徽永成电子机械技术有限公司 A kind of support of the overhead door closed-entry for automatic loading production line bag filling apparatus
CN104670560B (en) * 2015-02-28 2017-01-25 无锡耐特机电技术有限公司 Fully automatic bag clamping device
CN104670559A (en) * 2015-02-28 2015-06-03 无锡耐特机电技术有限公司 Powder material fixture device for automatic bag feeder
US11325733B2 (en) * 2016-01-14 2022-05-10 Automated Packaging Systems, Llc Seal flattener
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ES2688539T3 (en) * 2016-01-28 2018-11-05 Girnet Internacional, S.L. Device and procedure to assist in the operation of filling and closing a container and filling and closing station of a container in a packaging machine comprising said device
CN109229625A (en) * 2018-11-14 2019-01-18 福建长荣自动化设备有限公司 A kind of integral type outer bag machine structural system
CN109760883A (en) * 2019-03-29 2019-05-17 漳州佳龙科技股份有限公司 A kind of secondary sack-filling device and its working method
CN111114908A (en) * 2020-01-09 2020-05-08 无锡大东机械制造有限公司 Bag clamping mechanism of bag feeding machine
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Also Published As

Publication number Publication date
ATE144745T1 (en) 1996-11-15
US5301492A (en) 1994-04-12
CA2085331A1 (en) 1993-06-15
DE4141254A1 (en) 1993-06-17
EP0547297A1 (en) 1993-06-23
CA2085331C (en) 1998-07-21
DE59207460D1 (en) 1996-12-05

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