EP1541473B1 - Method and apparatus for handling a sack during sewing - Google Patents

Method and apparatus for handling a sack during sewing Download PDF

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Publication number
EP1541473B1
EP1541473B1 EP04029326A EP04029326A EP1541473B1 EP 1541473 B1 EP1541473 B1 EP 1541473B1 EP 04029326 A EP04029326 A EP 04029326A EP 04029326 A EP04029326 A EP 04029326A EP 1541473 B1 EP1541473 B1 EP 1541473B1
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EP
European Patent Office
Prior art keywords
sewing
arms
bag
clamping means
cheeks
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Not-in-force
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EP04029326A
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German (de)
French (fr)
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EP1541473A1 (en
Inventor
Vital Lévesgue
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Erin Intellectual Property Ltd
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ERIN INTELLECTUAL PROPERTY Ltd
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Publication of EP1541473A1 publication Critical patent/EP1541473A1/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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/02—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks
    • B65B7/06—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks by collapsing mouth portion, e.g. to form a single flap
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/04—Applying separate sealing or securing members, e.g. clips
    • B65B51/07—Sewing or stitching

Definitions

  • the invention relates to a method and an apparatus for handling a standing filled bag with a closed bag flag when sewing the bag flag in a sewing station.
  • the bag flag is already folded flat and optionally also double handled, to be detected during horizontal transport towards a sewing station of stationary arranged opposite guide belts to introduce the bag flag into the sewing station.
  • the end of the guide bands is in front of a sewing position, so the position of the sewing needle, and is so far away from this that the emerging from the guide belts part of the bag flag still experiences a certain lateral support from the guide belts when he reaches the sewing position.
  • transfer devices For bridging larger transport paths between a bag filling station and a bag closing device, in particular a sewing device, transfer devices have already been proposed which clamp a filled bag on the bag flag and synchronously with the speed of a conveyor belt. These devices comprise two pivotable arms with clamping means for the bag flag. However, they release the bag flag before entering the bag closing device ( DE 195 37 795 C1 . EP 0 559 952 B1 ).
  • the JP 52-125090 A shows a machine for closing a filled bag in the form of a sewing device.
  • the bag flag is held closed by means of terminals, while the bag is guided along a horizontal line through the sewing device.
  • the clamps are arranged on two pivotable arms.
  • the present invention has for its object to provide a method and an apparatus of the type mentioned, with which the sewing process can be improved and damage to the bag flag can be avoided during rapid sewing.
  • the inventive method for solving this problem is characterized in that the clamping means of the bag flag when passing through the sewing station in the passage direction is elastically resiliently held on at least one of the arms.
  • the Vernähline usually runs horizontally.
  • the inventive device for achieving this object is characterized in that the clamping means are arranged in the direction of passage of the sewing station resiliently on at least one of the arms in feed and Vernähcardi. In accordance with the position of the sewing line, the clamping means are arranged parallel to the same, that is to say in particular also horizontally.
  • the bag flag runs fed into the sewing device, so that even with low intrinsic stability of the bag flag a proper sewing can be performed.
  • the means for handling are not arranged stationary, but move synchronously with the bag under the sewing position therethrough.
  • the clamping means may in this case have a certain inherent elasticity, for example be designed as rubber elements or rubber-metal elements to a certain extent elastic compliance in the longitudinal direction of the bag flag exhibit.
  • the transverse forces acting on the sewing needle due to the continuous feed movement of the bag flag can be reduced.
  • the clamping means comprise a horizontal bar on one of the arms and the two stoppers on the other of the arms, which are engageable against each other to clamp the bag flag at their ends.
  • the stoppers are adjustable relative to one another in order to be adapted to bags of different widths. The fact that the bag flag is effectively clamped only at two points by the stoppers, creates a certain flexibility of the bag flag in the longitudinal direction in view of reducing the undesirable transverse forces on the sewing needle.
  • the clamping means in particular the strip on at least one of the arms, are arranged resiliently in the direction of the longitudinal extent of the bag flag, the resilience of the clamping device is particularly effectively realized, the Federsteftechnik can be adjusted so that at each piercing the sewing needle in the Sackfahne a yielding of the resilient clamping means against the feed direction of the bag flag can be done.
  • the one of the arms, to which the resilient clamping means are attached comprises two cheeks, and the resilient clamping means are held by two fastening tabs, wherein the cheeks and the fastening strips are connected in pairs via spring plates. In this way, a broad support of the resilient clamping means is realized.
  • the horizontal distance between the cheeks of said arm and the mounting tabs differ slightly from each other and that the spring plates are cranked in the initial state opposite S-shaped.
  • the spring movement is limited in each direction. This is based on the fact that, after a predetermined path, the spring plate on one of the mutually small offset parts arranged flat.
  • clamping means consist of a bar on the one hand and two stoppers on the other.
  • stopper pairs or a larger number of paired stoppers on both arms.
  • clamping means on both arms elastically in the direction of the bag flag, for example, with integrated in both arms spring plates of the type described above.
  • FIG. 1 a part of a sewing station is shown, wherein a sewing machine 11 can be seen, which is provided with a pivot axis 12 which is held in a pivot bearing 13.
  • the sewing machine 11 is shown in the drawing in its working position. It comprises a portal 14, through which the bag lug 15 of a filled bag 16 can be passed for sewing.
  • a Vernähech in the strict sense with horizontal suture needle lies within this portal.
  • the sack 16 is held during sewing of a device 17 according to the invention on the sacking and below a certain by the position of the sewing needle horizontal Vernähline 34.
  • the device 17 comprises two multi-unit movable arms 18, 19 with clamping means by means not shown here adjusting cylinder of the sack flag 15 swung away or can be brought together under pinching the bag flag at the same height with each other.
  • the means for actuating the multi-limbed arms are not shown in detail.
  • the device 17 as a whole can be moved in the direction of the bag lug 15 with the bag 16.
  • the arms 18, 19 can in this case in particular be connected to a carriage which at the same time carries and displaces the bag in order to ensure a synchronous movement between the bag 16 and the device 17.
  • the arm 18 comprises two cheeks 20, 21, which are designed as parallel levers and are mounted in two pairs of rocker arms.
  • the cheeks 20, 21 carry two fastening straps 22, 23, to which a horizontal bar 26 is attached directly.
  • the second arm 19 has two cheeks 28, 29, which directly bear a guide rail 27, are attached to the two individual stoppers axially adjustable. The stoppers are adjusted so that they fix the bag lug 15 of the bag 16 as long as possible against the bar 26.
  • the arms 18, 19 are attached to multi-part uprights 30, 31.
  • FIG. 3 the arm 19 is shown as a detail.
  • the two cheeks 20, 21, the two attachment tabs 22, 23 and the spring plates 24, 25 clearly visible with their fittings.
  • the glands are attached to the cheeks 20, 21 at the extreme end, while the glands are arranged on the fastening tabs 22, 23 at a distance from the free end.
  • the axial distance between the cheeks 20, 21 is greater than the axial distance between the fastening tabs 22, 23, wherein the spring plates 24, 25 are cranked S-shaped.
  • This has the consequence that a deflection of the strip 26 in its longitudinal direction in one or the other direction can be done against the restoring force of the spring plates until the front in the direction of movement of the attachment tabs rests flat on their spring plate.
  • the travel of the bar 26 is thus limited by simple means.
  • the bar 26 may be a rubber-metal element.
  • FIG. 4 the arm 19 is shown with its details.
  • a rod 27 is fixedly arranged on the cheeks 28, 29, on which the conical stoppers 32, 33 are arranged horizontally adjustable in the direction of the rod 27.
  • the stoppers 32, 33 can be brought into abutment with the aforesaid strip.
  • the movement of the spring-mounted bar can understand the stoppers essentially by their elastic training as a conical rubber element. The same applies to the bag flag clamped between the stoppers and the bar.
  • FIG. 5 the front end of the arm 18 is shown, wherein parts of the unspecified oscillating arms and the cheeks 20, 21 can be seen. Furthermore, the bar 26 with the attached fastening tabs 22, 23 and the spring plates 24, 25 can be seen. It is clear that the distance between the cheeks 20, 21 in the longitudinal direction of the bar is greater than the distance of the fastening tabs 22, 23.
  • the spring plates are already firmly screwed to the cheeks 20, 21 with first screw groups 36, 37. On the other hand, second groups of screws 38, 39 have not yet been firmly screwed to the fastening straps 22, 23.
  • the spring plates 24, 25 are therefore still in a flat initial shape and have a distance from the fastening tabs 22, 23.

Abstract

Upright filled sacks (16) with upright closed lugs (15) pass through a sewing station. When passing through the station, the lug is held elastically flexible below a sewing line, by clamp parts, which pass below a sewing position. The clamp parts are located on two pivoted arms (18,19) with advance devices, and consist of a rail (26) on one arm, and two stops on the other arm. The rails and two side parts (20,21) of one arm are held by two fastener plates (22,23), which are connected in pairs via spring plates (24,25).

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Handhaben eines stehenden gefüllten Sackes mit geschlossener Sackfahne beim Vernähen der Sackfahne in einer Vernähstation.The invention relates to a method and an apparatus for handling a standing filled bag with a closed bag flag when sewing the bag flag in a sewing station.

Bisher ist es üblich, mit Schüttgut befüllte Säcke, deren Sackfahne bereits flach zusammengelegt ist und gegebenenfalls auch doppelt umgeschlagen ist, beim horizontalen Transport in Richtung zu einer Vernähstation von ortsfest angeordneten gegenläufigen Führungsbändern erfassen zu lassen, um die Sackfahne in die Vemähstation einzuführen. Hierbei liegt das Ende der Führungsbänder vor einer Vernähposition, also der Position der Nähnadel, und ist von dieser so weit entfernt, daß der aus den Führungsbändern austretende Teil der Sackfahne noch einen gewissen seitlichen Halt von den Führungsbändern erfährt, wenn er die Nähposition erreicht. Trotzdem kann es in der Vernähstation zu Schäden am Sack kommen, die vorrangig davon herrühren, daß der Vorschub des Sackes in Richtung der Sackfahne kontinuierlich erfolgt, während das Vernähen mit der ortsfesten Nähnadel ein diskontinuierlicher Vorgang ist, bei dem die eingestochene Nähnadel die Sackfahne jeweils in Vorschubrichtung festhält und nach dem Herausziehen der Nähnadel eine Freigabe der Sackfahne erfolgt.So far, it is customary to fill bags filled with bulk material, the bag flag is already folded flat and optionally also double handled, to be detected during horizontal transport towards a sewing station of stationary arranged opposite guide belts to introduce the bag flag into the sewing station. In this case, the end of the guide bands is in front of a sewing position, so the position of the sewing needle, and is so far away from this that the emerging from the guide belts part of the bag flag still experiences a certain lateral support from the guide belts when he reaches the sewing position. Nevertheless, there may be damage to the sack in the sewing station, which result primarily from the fact that the feed of the bag in the direction of the bag flag is continuous, while sewing with the stationary sewing needle is a discontinuous process in which the pierced sewing needle the bag flag in each case Holds feed direction and after pulling out the sewing needle release of the bag flag occurs.

Für das Überbrücken von größeren Transportwegen zwischen einer Sackbefüllstation und einer Sackverschließvorrichtung, insbesondere einer Vernähvorrichtung, sind bereits Transfervorrichtungen vorgeschlagen worden, die einen gefüllten Sack an der Sackfahne einklemmen und synchron mit der Geschwindigkeit eines Förderbandes führen. Diese Vorrichtungen umfassen zwei schwenkbare Arme mit Klemmitteln für die Sackfahne. Sie geben die Sackfahne jedoch vor dem Einlaufen in die Sackverschließvorrichtung frei ( DE 195 37 795 C1 , EP 0 559 952 B1 ).For bridging larger transport paths between a bag filling station and a bag closing device, in particular a sewing device, transfer devices have already been proposed which clamp a filled bag on the bag flag and synchronously with the speed of a conveyor belt. These devices comprise two pivotable arms with clamping means for the bag flag. However, they release the bag flag before entering the bag closing device ( DE 195 37 795 C1 . EP 0 559 952 B1 ).

Ein Verfahren und eine Vorrichtung gemäß den Oberbegriffen der Ansprüche 1 und 2 sind aus der JP-A-52-125090 bekannt.A method and a device according to the preambles of claims 1 and 2 are known from JP-A-52-125090 known.

Die JP 52-125090 A zeigt eine Maschine zum Verschließen eines gefüllten Sackes in Form einer Nähvorrichtung. Die Sackfahne wird dabei mittels Klemmen geschlossen gehalten, während der Sack entlang einer horizontalen Linie durch die Nähvorrichtung geführt wird. Die Klemmen sind hierbei an zwei schwenkbaren Armen angeordnet.The JP 52-125090 A shows a machine for closing a filled bag in the form of a sewing device. The bag flag is held closed by means of terminals, while the bag is guided along a horizontal line through the sewing device. The clamps are arranged on two pivotable arms.

Aus der BE 704 551 A ist eine Sackabfüllvorrichtung und -vemähvorrichtung bekannt, bei welcher der Sack nach dem Befüllen mittels Klemmen an der Sackfahne geschlossen gehalten wird und mit der Sackfahne in eine darüberliegende Vernähvorrichtung geführt wird, die an einem festangeordneten Träger gehalten ist. Die Klemmen befindet sich auf einem Schlitten der mittels Federn insgesamt gegenüber einem verfahrbaren Rahmen gehalten ist. Der Schlitten bildet eine erhebliche träge Masse.From the BE 704 551 A is a Sackabfüllvorrichtung and -vemähvorrichtung known in which the bag is kept closed after filling by means of clamping on the bag flag and is guided with the bag flag in an overlying sewing device, which is held on a fixedly mounted carrier. The clamps are located on a carriage which is held by means of springs in total with respect to a movable frame. The carriage forms a considerable inert mass.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs genannten Art bereitzustellen, mit denen der Vernähvorgang verbessert werden kann und Schäden an der Sackfahne beim schnellen Vernähen vermieden werden können.The present invention has for its object to provide a method and an apparatus of the type mentioned, with which the sewing process can be improved and damage to the bag flag can be avoided during rapid sewing.

Das erfindungsgemäße Verfahren zur Lösung dieser Aufgabe ist dadurch gekennzeichnet, daß die Klemmittel der Sackfahne beim Durchlaufen der Vernähstation in Durchlaufrichtung elastisch federnd an zumindest einem der Arme gehalten wird. Die Vernählinie verläuft üblicherweise horizontal.The inventive method for solving this problem is characterized in that the clamping means of the bag flag when passing through the sewing station in the passage direction is elastically resiliently held on at least one of the arms. The Vernählinie usually runs horizontally.

Die erfindungsgemäße Vorrichtung zur Lösung dieser Aufgabe ist dadurch gekennzeichnet, daß die Klemmittel in Durchlaufrichtung der Vernähstation federnd an zumindest einem der Arme in Vorschub- und Vernährichtung angeordnet sind. Entsprechend der Lage der Vernählinie sind die Klemmittel parallel zu derselben, also insbesondere ebenfalls horizontal angeordnet.The inventive device for achieving this object is characterized in that the clamping means are arranged in the direction of passage of the sewing station resiliently on at least one of the arms in feed and Vernährichtung. In accordance with the position of the sewing line, the clamping means are arranged parallel to the same, that is to say in particular also horizontally.

Mit diesen Maßnahmen wird erreicht, daß die Sackfahne geführt in die Nähvorrichtung einläuft, so daß auch bei geringer Eigenstabilität der Sackfahne ein ordnungsgemäßen Vernähvorgang durchgeführt werden kann. Anders als die bekannten Führungsbänder sind also die Mittel zur Handhabung nicht ortsfest angeordnet, sondern bewegen sich synchron mit dem Sack unter der Vernähposition hindurch. Die Klemmittel können hierbei eine gewisse Eigenelastizität haben, beispielsweise als Gummielemente oder Gummi-Metall-Elemente ausgebildet sein, um eine gewisse elastische Nachgiebigkeit in Längsrichtung der Sackfahne aufzuweisen. Hiermit können die infolge der kontinuierlichen Vorschubbewegung der Sackfahne auf die Nähnadel einwirkenden Querkräfte reduziert werden.With these measures it is achieved that the bag flag runs fed into the sewing device, so that even with low intrinsic stability of the bag flag a proper sewing can be performed. Unlike the known guide belts so the means for handling are not arranged stationary, but move synchronously with the bag under the sewing position therethrough. The clamping means may in this case have a certain inherent elasticity, for example be designed as rubber elements or rubber-metal elements to a certain extent elastic compliance in the longitudinal direction of the bag flag exhibit. Hereby, the transverse forces acting on the sewing needle due to the continuous feed movement of the bag flag can be reduced.

In bevorzugter Ausführungsform umfassen die Klemmittel eine horizontale Leiste an einem der Arme und die zwei Stopper an dem anderen der Arme, die gegeneinander in Anlage bringbar sind, um die Sackfahne an ihren Enden einzuklemmen. Hierbei ist insbesondere vorgesehen, daß die Stopper relativ zueinander verstellbar sind, um an Säcke verschiedener Breite angepaßt zu werden. Auch der Umstand, daß die Sackfahne nur an zwei Punkten durch die Stopper effektiv eingeklemmt wird, schafft eine gewisse Nachgiebigkeit der Sackfahne in Längsrichtung im Hinblick auf eine Reduzierung der unerwünschten Querkräfte an der Nähnadel.In a preferred embodiment, the clamping means comprise a horizontal bar on one of the arms and the two stoppers on the other of the arms, which are engageable against each other to clamp the bag flag at their ends. In this case, it is provided in particular that the stoppers are adjustable relative to one another in order to be adapted to bags of different widths. The fact that the bag flag is effectively clamped only at two points by the stoppers, creates a certain flexibility of the bag flag in the longitudinal direction in view of reducing the undesirable transverse forces on the sewing needle.

Dadurch, daß die Klemmittel, insbesondere die Leiste an zumindest einem der Arme, in Richtung der Längserstreckung der Sackfahne federnd angeordnet sind, wird die Nachgiebigkeit der Klemmvorrichtung besonders effektiv verwirklicht, wobei die Federstefigkeit so eingestellt werden kann, daß bei jedem Einstechen der Nähnadel in die Sackfahne ein Nachgeben der federnden Klemmittel entgegen der Vorschubrichtung der Sackfahne erfolgen kann.The fact that the clamping means, in particular the strip on at least one of the arms, are arranged resiliently in the direction of the longitudinal extent of the bag flag, the resilience of the clamping device is particularly effectively realized, the Federstefigkeit can be adjusted so that at each piercing the sewing needle in the Sackfahne a yielding of the resilient clamping means against the feed direction of the bag flag can be done.

In bevorzugter konstruktiver Ausführung umfaßt der eine der Arme, an dem die federnden Klemmittel befestigt sind, zwei Wangen, und werden die federnden Klemmittel von zwei Befestigungslaschen gehalten, wobei die Wangen und die Befestigungsleisten paarweise über Federbleche miteinander verbunden sind. Auf diese Weise wird eine breite Abstützung der federnden Klemmittel verwirklicht.In a preferred constructive embodiment, the one of the arms, to which the resilient clamping means are attached, comprises two cheeks, and the resilient clamping means are held by two fastening tabs, wherein the cheeks and the fastening strips are connected in pairs via spring plates. In this way, a broad support of the resilient clamping means is realized.

Weiterhin kann vorgesehen werden, daß der horizontale Abstand zwischen den Wangen des genannten Armes und den Befestigungslaschen geringfügig voneinander abweicht und daß die Federbleche im Ausgangszustand entgegengesetzt S-förmig verkröpft sind. Hierdurch wird die Federbewegung in jeder Richtung beschränkt. Dies beruht darauf, daß sich nach einem vorgegebenen Weg das Federblech an eines der mit geringem Versatz zueinander angeordneten Teile flächig anlegt.Furthermore, it can be provided that the horizontal distance between the cheeks of said arm and the mounting tabs differ slightly from each other and that the spring plates are cranked in the initial state opposite S-shaped. As a result, the spring movement is limited in each direction. This is based on the fact that, after a predetermined path, the spring plate on one of the mutually small offset parts arranged flat.

Vorstehend sind Klemmittel beschrieben worden, die aus einer Leiste einerseits und zwei Stoppern andererseits bestehen. Es ist jedoch ohne weiteres möglich, Stopperpaare oder eine größere Anzahl von paarweise zugeordneten Stoppern an beiden Armen vorzusehen. Darüber hinaus ist es auch möglich, die Klemmittel an beiden Armen in Richtung der Sackfahne elastisch anzuordnen, beispielsweise mit in beide Arme integrierten Federblechen der oben beschriebenen Art.Above clamping means have been described, which consist of a bar on the one hand and two stoppers on the other. However, it is readily possible to provide stopper pairs or a larger number of paired stoppers on both arms. Moreover, it is also possible to arrange the clamping means on both arms elastically in the direction of the bag flag, for example, with integrated in both arms spring plates of the type described above.

Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden nachstehend beschrieben.

Figur 1
zeigt eine erfindungsgemäße Vorrichtung mit einem eingeklemmten Sack in einer Vernähstation in 3D-Darstellung;
Figur 2
zeigt die erfindungsgemäße Vorrichtung mit eingeklemmtem Sack ohne die Vernähstation in 3D-Darstellung;
Figur 3
zeigt einen der Arme der erfindungsgemäßen Vorrichtung;
Figur 4
zeigt den anderen der Arme der erfindungsgemäßen Vorrichtung;
Figur 5
zeigt die elastische Befestigung der Klemmittel an einem der Arme.
Preferred embodiments of the invention are illustrated in the drawings and described below.
FIG. 1
shows a device according to the invention with a clamped bag in a sewing station in 3D representation;
FIG. 2
shows the inventive device with clamped bag without the sewing station in 3D representation;
FIG. 3
shows one of the arms of the device according to the invention;
FIG. 4
shows the other of the arms of the device according to the invention;
FIG. 5
shows the elastic attachment of the clamping means on one of the arms.

In Figur 1 ist ein Teil einer Vernähstation gezeigt, wobei eine Nähmaschine 11 erkennbar ist, die mit einer Schwenkachse 12 versehen ist, die in einem Schwenklager 13 gehalten ist. Die Nähmaschine 11 ist in der Zeichnung in ihrer Arbeitsposition gezeigt Sie umfaßt ein Portal 14, durch das die Sackfahne 15 eines gefüllten Sackes 16 zum Vernähen hindurchgeführt werden kann. Eine Vernäheinheit im engeren Sinne mit horizontal liegender Nähnadel liegt innerhalb dieses Portals. Der Sack 16 wird beim Vernähen von einer erfindungsgemäßen Vorrichtung 17 an der Sackfahne gehalten und zwar unterhalb einer durch die Lage der Nähnadel bestimmten horizontalen Vernählinie 34. Die Vorrichtung 17 umfaßt zwei mehrgliedrige bewegliche Arme 18, 19 mit Klemmitteln, die mittels hier nicht dargestellter Stellzylinder von der Sackfahne 15 weggeschwenkt oder unter Einklemmen der Sackfahne auf gleiche Höhe miteinander in Anlage gebracht werden können. Die Mittel zur Betätigung der mehrgliedrigen Arme sind nicht im einzelnen dargestellt. Die Vorrichtung 17 als Ganzes ist in Richtung der Sackfahne 15 mit dem Sack 16 verfahrbar. Die Arme 18, 19 können hierbei insbesondere mit einem Schlitten verbunden sein, der gleichzeitig den Sack selber trägt und verschiebt, um eine synchrone Bewegung zwischen Sack 16 und Vorrichtung 17 zu gewährleisten.In FIG. 1 a part of a sewing station is shown, wherein a sewing machine 11 can be seen, which is provided with a pivot axis 12 which is held in a pivot bearing 13. The sewing machine 11 is shown in the drawing in its working position. It comprises a portal 14, through which the bag lug 15 of a filled bag 16 can be passed for sewing. A Vernäheinheit in the strict sense with horizontal suture needle lies within this portal. The sack 16 is held during sewing of a device 17 according to the invention on the sacking and below a certain by the position of the sewing needle horizontal Vernählinie 34. The device 17 comprises two multi-unit movable arms 18, 19 with clamping means by means not shown here adjusting cylinder of the sack flag 15 swung away or can be brought together under pinching the bag flag at the same height with each other. The means for actuating the multi-limbed arms are not shown in detail. The device 17 as a whole can be moved in the direction of the bag lug 15 with the bag 16. The arms 18, 19 can in this case in particular be connected to a carriage which at the same time carries and displaces the bag in order to ensure a synchronous movement between the bag 16 and the device 17.

In Figur 2 ist die Vorrichtung 17 mit dem Sack 16 ohne die Nähmaschine gezeigt. Hierbei ist besser erkennbar, daß die Arme 18, 19 unterschiedlich gestaltet sind. Der Arm 18 umfaßt zwei Wangen 20, 21, die als Parallelhebel ausgebildet sind und in zwei Paaren von Schwingarmen gelagert sind. Die Wangen 20, 21 tragen zwei Befestigungslaschen 22, 23, an denen unmittelbar eine horizontale Leiste 26 befestigt ist. Die Verbindung der Wangen 20, 21 mit den Befestigungslaschen 22, 23 erfolgt über Federbleche 24, 25, die die Befestigungslaschen 22, 23 und damit die Leiste 26 in ihrer Längsrichtung elastisch an den Wangen 20, 21 halten, die im wesentlichen starr sind. Der zweite Arm 19 weist zwei Wangen 28, 29 auf, die unmittelbar eine Führungsleiste 27 tragen, an der zwei einzelne Stopper axial verstellbar befestigt sind. Die Stopper sind so eingestellt, daß sie die Sackfahne 15 des Sackes 16 auf möglichst großer Länge gegen die Leiste 26 fixieren. Die Arme 18, 19 sind an mehrteiligen Ständern 30, 31 befestigt.In FIG. 2 the device 17 is shown with the bag 16 without the sewing machine. It can be better seen that the arms 18, 19 are designed differently. The arm 18 comprises two cheeks 20, 21, which are designed as parallel levers and are mounted in two pairs of rocker arms. The cheeks 20, 21 carry two fastening straps 22, 23, to which a horizontal bar 26 is attached directly. The connection of the cheeks 20, 21 with the fastening tabs 22, 23 via spring plates 24, 25 which hold the fastening tabs 22, 23 and thus the bar 26 in its longitudinal direction elastically on the cheeks 20, 21, which are substantially rigid. The second arm 19 has two cheeks 28, 29, which directly bear a guide rail 27, are attached to the two individual stoppers axially adjustable. The stoppers are adjusted so that they fix the bag lug 15 of the bag 16 as long as possible against the bar 26. The arms 18, 19 are attached to multi-part uprights 30, 31.

In Figur 3 ist der Arm 19 als Einzelheit dargestellt. Es sind die beiden Wangen 20, 21, die beiden Befestigungslaschen 22, 23 sowie die Federbleche 24, 25 mit ihren Verschraubungen deutlich erkennbar. Es ist darauf hinzuweisen, daß die Verschraubungen an den Wangen 20, 21 am äußersten Ende angebracht sind, während die Verschraubungen an den Befestigungslaschen 22, 23 mit Abstand zum freien Ende angeordnet sind. Der axiale Abstand zwischen den Wangen 20, 21 ist größer als der axiale Abstand zwischen den Befestigungslaschen 22, 23, wobei die Federbleche 24, 25 S-förmig verkröpft sind. Dies hat zur Folge, daß ein Auslenken der Leiste 26 in ihrer Längsrichtung in die eine oder andere Richtung jeweils gegen die Rückstellkraft der Federbleche solange erfolgen kann, bis die in Bewegungsrichtung vordere der Befestigungslaschen flächig an ihrem Federblech anliegt. Der Federweg der Leiste 26 ist damit mit einfachen Mitteln begrenzt. Die Leiste 26 kann ein Gummi-MetallElement sein.In FIG. 3 the arm 19 is shown as a detail. There are the two cheeks 20, 21, the two attachment tabs 22, 23 and the spring plates 24, 25 clearly visible with their fittings. It should be noted that the glands are attached to the cheeks 20, 21 at the extreme end, while the glands are arranged on the fastening tabs 22, 23 at a distance from the free end. The axial distance between the cheeks 20, 21 is greater than the axial distance between the fastening tabs 22, 23, wherein the spring plates 24, 25 are cranked S-shaped. This has the consequence that a deflection of the strip 26 in its longitudinal direction in one or the other direction can be done against the restoring force of the spring plates until the front in the direction of movement of the attachment tabs rests flat on their spring plate. The travel of the bar 26 is thus limited by simple means. The bar 26 may be a rubber-metal element.

In Figur 4 ist der Arm 19 mit seinen Einzelheiten gezeigt. Hierbei ist an den Wangen 28, 29 unmittelbar eine Stange 27 fest angeordnet, auf der die konischen Stopper 32, 33 in Richtung der Stange 27 horizontal verstellbar angeordnet sind. Wie bereits vorher beschrieben, können durch Schwenken der Arme die Stopper 32, 33 in Anlage mit der zuvor genannten Leiste gebracht werden. Die Bewegung der federnd gelagerten Leiste können die Stopper im wesentlichen durch ihre elastische Ausbildung als konisches Gummielement nachvollziehen. Das gleiche gilt für die zwischen den Stoppern und der Leiste eingeklemmte Sackfahne.In FIG. 4 the arm 19 is shown with its details. Here, a rod 27 is fixedly arranged on the cheeks 28, 29, on which the conical stoppers 32, 33 are arranged horizontally adjustable in the direction of the rod 27. As previously described, by pivoting the arms, the stoppers 32, 33 can be brought into abutment with the aforesaid strip. The movement of the spring-mounted bar can understand the stoppers essentially by their elastic training as a conical rubber element. The same applies to the bag flag clamped between the stoppers and the bar.

In Figur 5 ist das vordere Ende des Arms 18 gezeigt, wobei Teile der nicht näher bezeichneten Schwingarme sowie die Wangen 20, 21 erkennbar sind. Weiterhin ist die Leiste 26 mit den daran befestigten Befestigungslaschen 22, 23 sowie die Federbleche 24, 25 erkennbar. Es ist deutlich, daß der Abstand der Wangen 20, 21 in Längsrichtung der Leiste größer ist als der Abstand der Befestigungslaschen 22, 23. Die Federbleche sind mit ersten Schraubengruppen 36, 37 bereits fest an den Wangen 20, 21 angeschraubt. Dagegen sind zweite Schraubengruppen 38, 39 noch nicht fest mit den Befestigungslaschen 22, 23 verschraubt. Die Federbleche 24, 25 sind daher noch in einer ebenen Ausgangsform und haben einen Abstand gegenüber den Befestigungslaschen 22, 23. Bei einem Anziehen der Schraubengruppen 38, 39 verkröpfen sich die Federbleche symmetrisch zueinander in S-Form. Bei Schwingungen der Leiste 36 in Längsrichtung ist infolge dessen der Weg dadurch begrenzt, daß sich eine der Befestigungslaschen 22, 23 flächig an das entsprechende in seine ebene Ausgangsform zurückfedernde Federblech anlegt. An die aus Metall bestehende Leiste 26 ist eine Gummilippe 35 angeschraubt.In FIG. 5 the front end of the arm 18 is shown, wherein parts of the unspecified oscillating arms and the cheeks 20, 21 can be seen. Furthermore, the bar 26 with the attached fastening tabs 22, 23 and the spring plates 24, 25 can be seen. It is clear that the distance between the cheeks 20, 21 in the longitudinal direction of the bar is greater than the distance of the fastening tabs 22, 23. The spring plates are already firmly screwed to the cheeks 20, 21 with first screw groups 36, 37. On the other hand, second groups of screws 38, 39 have not yet been firmly screwed to the fastening straps 22, 23. The spring plates 24, 25 are therefore still in a flat initial shape and have a distance from the fastening tabs 22, 23. When tightening the screw groups 38, 39, the spring plates verkröpfen symmetrical to each other in S-shape. As a result, in vibrations of the strip 36 in the longitudinal direction, the path is limited by the fact that one of the fastening tabs 22, 23 applies in a planar manner to the corresponding spring plate which springs back into its flat initial shape. At the existing metal strip 26, a rubber lip 35 is screwed.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1111
Nähmaschinesewing machine
1212
Stangepole
1313
Schwenklagerpivot bearing
1414
Portalportal
1515
Sackfahnebag flap
1616
Sackbag
1717
Vorrichtungcontraption
1818
Armpoor
1919
Armpoor
2020
Wangecheek
2121
Wangecheek
2222
Befestigungslaschemounting tab
2323
Befestigungslaschemounting tab
2424
Federblechspring plate
2525
Federblechspring plate
2626
Leistestrip
2727
Stangepole
2828
Wangecheek
2929
Wangecheek
3030
Ständerstand
3131
Ständerstand
3232
Stopperstopper
3333
Stopperstopper
3434
Vernähliniesewing line
3535
Gummilipperubber lip
3636
Schraubengruppescrews group
3737
Schraubengruppescrews group
3838
Schraubengruppescrews group
3939
Schraubengruppescrews group

Claims (5)

  1. A method of handling an upstanding filled bag with a closed bag flap while the bag flap is being sewn up in a sewing station, wherein the bag flap (15), when passing through the sewing station is held so as to be clamped in underneath a sewing line in clamping means (26, 32, 33) which can be guided along underneath a sewing position and which are arranged at two pivotable arms (18, 19),
    characterised in
    that when passing through the sewing station, the clamping means (26, 32, 33) of the bag flap (15) are elastically resiliently held in the passing-through direction at at least one of the arms (18).
  2. A device for handling an upstanding bag with a closed bag flap while the bag flap is being sewn up in a sewing station, comprising two pivotable arms (18, 19) with clamping means (26, 32, 33) which are able to fix the closed bag flap (15) underneath a sewing line, and comprising feeding means for the arms (18, 19) by means of which the clamping means (26, 32, 33) can be guided along underneath a sewing position,
    characterised in
    that in the working direction of the sewing machine, the clamping means are resiliently arranged at at least one of the arms (18) in the feeding and sewing-up direction.
  3. A device according to claim 2,
    characterised in
    that the clamping means comprise a strip (26) at one of the arms (18) and two stoppers (32, 33) at the other one of the arms (19), which strip (26) and stoppers (32, 33) can be made to contact one another for the purpose of clamping in the closed bag flap at its ends.
  4. A device according to claim 3,
    that one of the arms (28) comprises two cheeks (20, 21) and that the clamping means, more particularly the strip (26), are held by two fixing brackets (22, 23) and
    that the cheeks (20, 21) and the fixing brackets (22, 23) are connected in pairs by means of spring plates (24, 25).
  5. A device according to claim 4,
    characterised in
    that the distances between the cheeks (20, 21) and the fixing brackets (22, 23) deviate slightly from one another and
    that the spring plates (24, 25) are crimped in an S-like way in opposite directions relative to one another.
EP04029326A 2003-12-13 2004-12-10 Method and apparatus for handling a sack during sewing Not-in-force EP1541473B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10358490 2003-12-13
DE10358490A DE10358490B4 (en) 2003-12-13 2003-12-13 Device for handling a sack when sewing

Publications (2)

Publication Number Publication Date
EP1541473A1 EP1541473A1 (en) 2005-06-15
EP1541473B1 true EP1541473B1 (en) 2008-04-09

Family

ID=34485370

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04029326A Not-in-force EP1541473B1 (en) 2003-12-13 2004-12-10 Method and apparatus for handling a sack during sewing

Country Status (4)

Country Link
US (1) US20050150570A1 (en)
EP (1) EP1541473B1 (en)
AT (1) ATE391675T1 (en)
DE (2) DE10358490B4 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX353891B (en) * 2009-12-22 2018-02-01 Premier Tech Tech Ltee Star Robotized transport and transfer system.
CN103863616B (en) * 2014-04-06 2016-01-20 金丽秋 A kind of automatic sewing device of packing scale
CN110921002B (en) * 2019-12-18 2023-12-08 天津市旭辉恒远塑料包装股份有限公司 Woven bag sealing frame

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Publication number Priority date Publication date Assignee Title
US1353210A (en) * 1919-03-27 1920-09-21 Bates Valve Bag Co Process of making and filling bags
US1577472A (en) * 1924-04-10 1926-03-23 Union Special Machine Co Machine for closing paper sacks
BE393049A (en) * 1931-12-24
US2070685A (en) * 1933-01-13 1937-02-16 Bemis Bro Bag Co Bag and process and device for effecting closures therein
US2097447A (en) * 1933-04-14 1937-11-02 Bagpak Inc Apparatus for filling, sewing, and sealing bags
US2151438A (en) * 1936-10-31 1939-03-21 Bemis Bro Bag Co Clipper
US2293688A (en) * 1939-09-13 1942-08-18 Bagpak Inc Bag closing machine
US2490940A (en) * 1946-02-11 1949-12-13 William J Barker Method of and means for forming and filling bags
US2670700A (en) * 1950-10-27 1954-03-02 Bemis Bro Bag Co Control mechanism for sewing machines and the like
US2853842A (en) * 1955-06-27 1958-09-30 St Regis Paper Co Apparatus for filling and closing bags
BE551857A (en) * 1956-07-05
US3115736A (en) * 1961-04-24 1963-12-31 Axel F Peterson Bag closing apparatus
US3241290A (en) * 1962-05-14 1966-03-22 Canadian Ind Bag top aligning device
GB1143550A (en) * 1966-04-01 1969-02-26
FR1505465A (en) * 1966-10-10 1967-12-15 Automatic bagging machine
US3882657A (en) * 1973-08-02 1975-05-13 Fischbein Mfg Dave Bag feeding apparatus for bag closing machine
NL7511968A (en) * 1975-10-10 1977-04-13 Grisnich Maschf Bv DEVICE FOR GUIDING POCKETS.
JPS52125090A (en) * 1976-04-12 1977-10-20 Kyowa Kougiyoushiyo Yuugen Fill packaging method and equipment
US4047363A (en) * 1976-11-05 1977-09-13 Richard Rath Packaging Machinery, Inc. Packaging apparatus
FR2400462A1 (en) * 1977-08-18 1979-03-16 Est Imprimerie Papeterie BAGGING MACHINE FOR PULVERULENT PRODUCTS PACKAGING
US4322932A (en) * 1980-05-05 1982-04-06 Mcgregor Harold R Bag filling and handling apparatus
US4567711A (en) * 1984-07-19 1986-02-04 Ouachita Machine Works, Inc. Bag machine and method for sealing novel bag
DE3615178A1 (en) * 1985-12-13 1987-06-25 Windmoeller & Hoelscher DEVICE FOR CLOSING FILLED BAGS
DE9203380U1 (en) * 1992-03-13 1992-07-30 Chronos Richardson Gmbh, 5202 Hennef, De

Also Published As

Publication number Publication date
ATE391675T1 (en) 2008-04-15
DE502004006760D1 (en) 2008-05-21
DE10358490A1 (en) 2005-07-21
EP1541473A1 (en) 2005-06-15
DE10358490B4 (en) 2005-12-15
US20050150570A1 (en) 2005-07-14

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