EP0888876B1 - Machine for delivering and stacking bags, fabricated from a thermoplastic web - Google Patents

Machine for delivering and stacking bags, fabricated from a thermoplastic web Download PDF

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Publication number
EP0888876B1
EP0888876B1 EP98105711A EP98105711A EP0888876B1 EP 0888876 B1 EP0888876 B1 EP 0888876B1 EP 98105711 A EP98105711 A EP 98105711A EP 98105711 A EP98105711 A EP 98105711A EP 0888876 B1 EP0888876 B1 EP 0888876B1
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EP
European Patent Office
Prior art keywords
rod
bearing journal
web
film
bag
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.)
Expired - Lifetime
Application number
EP98105711A
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German (de)
French (fr)
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EP0888876A1 (en
Inventor
Armin Meyer
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.)
Lemo Maschinenbau GmbH
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Lemo Maschinenbau GmbH
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Filing date
Publication date
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Publication of EP0888876A1 publication Critical patent/EP0888876A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B31B70/022—Holders for feeding or positioning sheets or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B31B2160/106—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents obtained from sheets cut from larger sheets or webs before finishing the bag forming operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/92—Delivering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/92—Delivering
    • B31B70/98—Delivering in stacks or bundles
    • B31B70/988—Assembling or block-forming of bags; Loading bags on a mandrel

Definitions

  • the invention relates to a device for cross-welding cutting and stacking Collecting and blocking of bags made from a plastic sheet, especially shirt pockets, with a cross-cut welding device, one in Direction of film web following collection and blocking device and one arranged between the latter and the cross-cutting welding device Intake device with at least one, preferably two substantially transverse to Web direction extending and by means of rotating drive elements through the Movable film plane and thereby deflecting a portion of each bag Pole or poles.
  • a device of the type described above is known from DE 42 14 365 A1.
  • a feed device is between the cross-cut welding device and one Stacking station stored a drum with a transverse axis, the envelope cylinder through formed at least two rods and the one in the welding cycle around a certain Angular step is rotatably driven.
  • the feed device is designed such that the rear part of a bag already fixed in the stacking device the drum rod lying underneath and after further turning the Drum comes off the rack again.
  • the invention has for its object a device of the type mentioned to create the at comparatively high machine cycle rates and more extensive Wear resistance both a good weld quality of the bags and one Safe pack formation and largely distortion-free blocking of the stack of bags allows.
  • each rod has at least one compared to the plastic film web or the bag moving in the transport direction has rolling surface.
  • the device according to the invention is particularly suitable for thin and comparatively dull plastic films and comparatively thick bags because of warping no longer enters through the rod feed.
  • the generation of a rolling friction between the plastic film web or The bag surface and the rod can be reached in various ways.
  • the rod itself it is conceivable for the rod itself to be rotatable about its longitudinal axis train, for example in such a way that the rod in pairs at a distance opposite and above and below the plastic film web level arranged deflection wheels guided drive chains is mounted.
  • the rod altogether rotatably mounted in the form of a rolling rod between the drive chains.
  • the rod connects one to the Drive chains with non-rotatably mounted bearing journals and a rotatably mounted one Has tube or a sleeve.
  • the tube preferably has approximately the length of the bearing part of the bearing journal.
  • the tube in principle, it is also conceivable for the tube to be spaced from several on the bearing journal arranged to form rotatable tube sleeves.
  • the device shown in the drawing is part of a bag making machine the plastic bag, e.g. B. shirt bags can be made.
  • the Individual bags are made in a manner known per se from a plastic film web 1 generated in the drawing according to arrow 2 from right to left through Preferred rollers 3 and possibly with the support of not shown Blowing nozzles first moved into the area of a cross-cutting welding device 4 becomes.
  • the Infeed device has drive chains 8 guided around deflection wheels 7, which - like themselves results from Figure 4, are arranged opposite each other in pairs.
  • the one bar 9 is above the transport plane of the Plastic sheet 1 or a bag 12 created from this, while the other Rod 11 at a distance from the bag level on the other side of the drive chains 8 is attached.
  • the drive chains rotate counterclockwise, the drive chain can move Plastic film web 1, bags 12 cut to length by the cross-cutting welding device 4 with its rear part, as described in more detail below, into the Area of a rotating fan 13 are brought.
  • the collecting and interlocking device 5 has a stack support 14, which with a component 15 of the bag making machine, not shown in detail connected is.
  • the component 15 can according to the double arrow 16 along a Guide column 17 can be adjusted substantially vertically.
  • Below the stack support 14 is a needle bar 18 on which several in a row arranged dome 19 are arranged, each through an opening 21 in the stack support 14 are passed.
  • the domes 19 are an extension of a glow plug 22 formed, which is arranged in the region of the needle bar 18, which in turn accordingly the double arrow 23 also essentially in the vertical direction is adjustable.
  • the dome-like extension or dome 19 is above the glow plug 22 during the stacking of the bags constantly heated, so that the glow plug from burns down through the foil wall of the stored bags.
  • a cutout for the Creation of shirt carrier bags can be generated.
  • the rod 9 or 11 has an inner bearing pin 24 on which a tube 25 or a sleeve is rotatably mounted.
  • the journal 24 is on his one, namely the left side, with a conical limiting element 26 firmly connected, the via an indicated screw 27 with a chain link Drive chain 8 is connected.
  • a releasable limiting element 28 On the opposite side of the journal 24 is a releasable limiting element 28, which is also conical arranged and also via an elongated screw 29 with the Bearing pin 24 connected on the one hand and a chain link of the drive chain 8.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Querschweißtrennen und stapelweisen Sammeln und Verblocken von aus einer Kunststoffolienbahn hergestellten Beuteln, insbesondere Hemdchentragetaschen, mit einer Quertrenn-Schweißeinrichtung, einer in Folienbahnlaufrichtung nachfolgend angeordneten Sammel- und Verblockungseinrichtung sowie einer zwischen letzterer und der Quertrenn-Schweißeinrichtung angeordneten Einzugseinrichtung mit wenigstens einer, vorzugsweise zwei im wesentichen quer zur Bahnlaufrichtung erstreckenden und mittels umlaufender Antriebselemente durch die Folienbahnebene bewegbaren und dabei einen Teilbereich jedes Beutels umlenkenden Stange bzw. Stangen.The invention relates to a device for cross-welding cutting and stacking Collecting and blocking of bags made from a plastic sheet, especially shirt pockets, with a cross-cut welding device, one in Direction of film web following collection and blocking device and one arranged between the latter and the cross-cutting welding device Intake device with at least one, preferably two substantially transverse to Web direction extending and by means of rotating drive elements through the Movable film plane and thereby deflecting a portion of each bag Pole or poles.

Aus der DE 42 14 365 A1 ist eine Vorrichtung der vorstehend beschriebenen Art bekannt. Als Einzugseinrichtung ist zwischen der Quertrenn-Schweißeinrichtung und einer Stapelstation eine Trommel mit querliegender Achse gelagert, deren Hüllzylinder durch mindestens zwei Stangen gebildet und die im Schweißtakt um einen bestimmten Winkelschritt drehbar angetrieben ist. Die Einzugseinrichtung ist derart ausgebildet, daß sich der hintere Teil eines bereits in der Stapeleinrichtung fixierten Beutels um die untenliegende Stange der Trommel herumschlingt und nach weiterem Verdrehen der Trommel sich wieder von der Stange löst. Durch das vorübergehende Abstützen der zugeführten Bereiche der Beutel soll eine gute Kühlung der nachlaufenden Schweißnähte erreicht werden, ohne daß ein Verkleben der Abschnitte beim Stapeln im Bereich der Querschweißnähte zu befürchten ist.A device of the type described above is known from DE 42 14 365 A1. As a feed device is between the cross-cut welding device and one Stacking station stored a drum with a transverse axis, the envelope cylinder through formed at least two rods and the one in the welding cycle around a certain Angular step is rotatably driven. The feed device is designed such that the rear part of a bag already fixed in the stacking device the drum rod lying underneath and after further turning the Drum comes off the rack again. By temporarily supporting the fed areas of the bags should ensure good cooling of the trailing weld seams can be achieved without the sections sticking together when stacking in the region of the Cross welds is to be feared.

Durch die vorbeschriebene Umlenkung des hinteren Bereichs des zur Stapelstation geführten Beutels gleitet dessen Oberfläche unmittelbar über die Oberfläche der Stange.
Durch die dabei zwischen der Stangenoberfläche und der Beuteloberfläche auftretenden hohe Haftreibung entstehen relativ hohe Rückhaltekräfte, die dazu führen, daß die in der Schweißeinrichtung erstellten Schweißnähte der Beutel überdehnt bzw. zerstört werden, so daß sich nicht nur eine schlechte Schweißnaht ergibt, sondern zugleich auch unsaubere Verblockungs- und Aufnadelpunkte in der Sammel- und Verblockungseinrichtung entstehen. Im Extremfall, insbesondere bei Folien mit stumpfer Oberfläche, kann es sogar zu einer Blockade des Stangeneinzugs kommen. Bisher hat man dieses Problem dadurch zu lösen versucht, indem man die Vorrichtung mit vergleichsweise niedriger Taktzahl betrieben hat. Dies führt jedoch zu einem erheblichen Leistungsverlust. Außerdem hat man Klemmleisten der Querschweißtrenneinrichtung mit leichter Verzögerung geöffnet, jedoch auf Kosten höherer mechanischer Belastungen und eines frühzeitigeren Verschleißes bestimmter Maschinenteile.Due to the previously described deflection of the rear area of the bag which is led to the stacking station, its surface slides directly over the surface of the rod.
Due to the high static friction occurring between the rod surface and the bag surface, relatively high retention forces arise, which lead to the weld seams of the bag created in the welding device being overstretched or destroyed, so that not only does a poor weld seam result, but at the same time it is also unclean Blocking and pin points arise in the collection and blocking device. In extreme cases, especially with films with a blunt surface, the rod feed may even be blocked. So far, attempts have been made to solve this problem by operating the device with a comparatively low number of cycles. However, this leads to a considerable loss of performance. In addition, terminal strips of the cross welding separating device have been opened with a slight delay, but at the expense of higher mechanical loads and earlier wear of certain machine parts.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, die bei vergleichsweise hohen Maschinentaktzahlen und weitgehender Verschleißunanfälligkeit sowohl eine gute Schweißnahtgüte der Beutel als auch eine sichere Packenausbildung und weitgehend verzerrungsfreies Verblocken des Beutelstapels ermöglicht.The invention has for its object a device of the type mentioned to create the at comparatively high machine cycle rates and more extensive Wear resistance both a good weld quality of the bags and one Safe pack formation and largely distortion-free blocking of the stack of bags allows.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß jede Stange zumindest eine gegenüber der in Transportrichtung bewegten Kunststoffolienbahn bzw. des Beutels abrollende Oberfläche aufweist. Mit den Mitteln nach der Erfindung wird die bisherige Gleitreibung zwischen dem Beutelende und der starren Stange, die unter ungünstigen Umständen zu einer Blockierung des Stangeneinzugs führen kann, nunmehr durch eine abrollende Reibung zwischen dem Beutelende und der damit zusammenwirkenden Oberfläche der Stange bzw. der Stangen erreicht. Auf diese Weise kann die Maschine bzw. die Vorrichtung mit vergleichsweise hoher Maschinenleistung betrieben werden. Außerdem ergibt sich eine bessere Schweißnahtqualität, da keine Nahtabrisse mehr durch eine zu hohe Reibung zwischen dem Folienende und der Stange auftreten. Insgesamt werden die mechanischen Teile der Vorrichtung, wie Lager und Rutschkupplungen und dergleichen, einer niedrigeren Belastung ausgesetzt. Im Sammelbereich ergibt sich eine bessere Packenbildung, da die bisher beispielsweise durch Nadeln und Verblockungskerzen gebildete Langlochausbildung im Beutel nicht mehr auftritt. Die erfindungsgemäße Vorrichtung eignet sich insbesondere für dünne und vergleichsweise stumpfe Kunststoffolien und bei vergleichsweise dicken Beutelpacken, da ein Verziehen durch den Stangeneinzug nicht mehr eintritt.This object is achieved in that each rod has at least one compared to the plastic film web or the bag moving in the transport direction has rolling surface. With the means according to the invention, the previous one Sliding friction between the end of the bag and the rigid rod, which is unfavorable Circumstances can lead to a blockage of the rod feed, now by a rolling friction between the end of the bag and the one interacting with it Surface of the rod or rods reached. This way the machine can or the device can be operated with a comparatively high machine output. In addition, there is a better weld seam quality because there are no more seam breaks due to excessive friction between the film end and the rod. Overall, the mechanical parts of the device, such as bearings and slip clutches and the like, exposed to a lower load. In the collection area there is a better formation of packs, since the needles and Blocking candles formed elongated hole formation in the bag no longer occurs. The The device according to the invention is particularly suitable for thin and comparatively dull plastic films and comparatively thick bags because of warping no longer enters through the rod feed.

Das Erzeugen einer rollenden Reibung zwischen der Kunststoffolienbahn bzw. der Beuteloberfläche und der Stange kann auf verschiedene Art und Weise erreicht werden. Grundsätzlich ist es denkbar, die Stange selbst um ihre Längsachse verdrehbar auszubilden, beispielsweise in der Weise, daß die Stange an paarweise mit Abstand gegenüberliegenden und über oberhalb und unterhalb der Kunststoffolienbahnebene angeordnete Umlenkräder geführten Antriebsketten gelagert ist. Dabei ist die Stange insgesamt in Form einer Abrollstange zwischen den Antriebsketten drehbar gelagert.The generation of a rolling friction between the plastic film web or The bag surface and the rod can be reached in various ways. In principle, it is conceivable for the rod itself to be rotatable about its longitudinal axis train, for example in such a way that the rod in pairs at a distance opposite and above and below the plastic film web level arranged deflection wheels guided drive chains is mounted. Here is the rod altogether rotatably mounted in the form of a rolling rod between the drive chains.

Grundsätzlich ist aber auch eine Lösung denkbar, bei der die Stange einen an den Antriebsketten unverdrehbar gelagerten Lagerzapfen und ein darauf drehbar gelagertes Rohr bzw. eine Hülse aufweist. Vorzugsweise weist das Rohr etwa die Länge des tragenden Teils des Lagerzapfens auf.In principle, however, a solution is also conceivable in which the rod connects one to the Drive chains with non-rotatably mounted bearing journals and a rotatably mounted one Has tube or a sleeve. The tube preferably has approximately the length of the bearing part of the bearing journal.

Im Prinzip ist es auch denkbar, das Rohr von mehreren auf dem Lagerzapfen abstandslos angeordneten drehbaren Rohrhülsen zu bilden.In principle, it is also conceivable for the tube to be spaced from several on the bearing journal arranged to form rotatable tube sleeves.

Ein bevorzugtes Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher erläutert. Es zeigen in jeweils schematischer Darstellung:

Figur 1
eine erfindungsgemäß ausgebildete Vorrichtung mit einer Quertrenn-schweißeinrichtung, einer Sammel- und Verblockungseinrichtung sowie einer Einzugseinrichtung, deren Stangen in bezug auf den Folienvorschub sich in der Grundstellung befinden,
Figur 2
einen Querschnitt durch eine der Stangen in vergrößertem Maßstab,
Figur 3
eine der Figur 1 entsprechende Darstellung bei Beginn der Stangenbewegung nach dem Schweißvorgang,
Figur 4
eine Aufsicht auf die Einzugseinrichtung in vergrößertem Maßstab,
Figur 5
eine den Figuren 1 und 3 entsprechende Darstellung der Vorrichtung bei fortgeschrittener Stangenbewegung nach dem Schweißvorgang und
Figur 6
eine Einzelheit der Einzugseinrichtung in vergrößertem Maßstab.
A preferred embodiment of the invention is shown in the drawing and is explained in more detail below. Each shows in a schematic representation:
Figure 1
a device designed according to the invention with a cross-cut welding device, a collecting and blocking device and a feed device, the rods of which are in the basic position with respect to the film feed,
Figure 2
a cross section through one of the rods on an enlarged scale,
Figure 3
1 shows a representation corresponding to FIG. 1 at the start of the rod movement after the welding process,
Figure 4
a view of the feed device on an enlarged scale,
Figure 5
a representation corresponding to Figures 1 and 3 of the device with advanced rod movement after the welding process and
Figure 6
a detail of the feeder on an enlarged scale.

Die in der Zeichnung dargestellte Vorrichtung ist Teil einer Beutelherstellmaschine, auf der Beutel aus Kunststoff, z. B. Hemdchentragetaschen, hergestellt werden können. Die einzelnen Beutel werden in an sich bekannter Weise aus einer Kunststoffolienbahn 1 erzeugt, die in der Zeichnung entsprechend dem Pfeil 2 von rechts nach links durch Vorzugswalzen 3 und gegebenenfalls mit Unterstützung von nicht dargestellten Blasdüsen zunächst bis in den Bereich einer Quertrenn-Schweißeinrichtung 4 bewegt wird. Hinter der Quertrenn-Schweißeinrichtung 4 und vor einer nachgeschalteten Sammel- und Verblockungseinrichtung 5 ist eine Einzugseinrichtung 6 angeordnet. Die Einzugseinrichtung weist um Umlenkräder 7 geführte Antriebsketten 8 auf, die - wie sich aus Figur 4 ergibt-, mit Abstand paarweise gegenüberliegend angeordnet sind. Auf jeweils einer Seite ist zwischen den Antriebsketten 8 jeweils eine Stange 9, 11 angeordnet, die in weiter unten näher beschriebener Weise an den Antriebsketten befestigt ist.The device shown in the drawing is part of a bag making machine the plastic bag, e.g. B. shirt bags can be made. The Individual bags are made in a manner known per se from a plastic film web 1 generated in the drawing according to arrow 2 from right to left through Preferred rollers 3 and possibly with the support of not shown Blowing nozzles first moved into the area of a cross-cutting welding device 4 becomes. Behind the cross-cutting welding device 4 and in front of a downstream one Collection and blocking device 5, a feed device 6 is arranged. The Infeed device has drive chains 8 guided around deflection wheels 7, which - like themselves results from Figure 4, are arranged opposite each other in pairs. On On each side there is a rod 9, 11 between the drive chains 8 arranged on the drive chains in a manner described in more detail below is attached.

Wie sich aus Figur 1 ergibt, liegt die eine Stange 9 oberhalb der Transportebene der Kunststoffolienbahn 1 bzw. eines aus dieser erstellten Beutels 12, während die andere Stange 11 mit Abstand zur Beutelebene an der anderen Seite der Antriebsketten 8 befestigt ist. Bei Umlauf der Antriebsketten im Gegenuhrzeigersinn kann der von der Kunststoffolienbahn 1 durch die Quertrenn-Schweißeinrichtung 4 abgelängte Beutel 12 mit seinem hinteren Teil, so wie das weiter unten näher beschrieben wird, bis in den Bereich eines umlaufend angetriebenen Fächers 13 gebracht werden.As can be seen from Figure 1, the one bar 9 is above the transport plane of the Plastic sheet 1 or a bag 12 created from this, while the other Rod 11 at a distance from the bag level on the other side of the drive chains 8 is attached. When the drive chains rotate counterclockwise, the drive chain can move Plastic film web 1, bags 12 cut to length by the cross-cutting welding device 4 with its rear part, as described in more detail below, into the Area of a rotating fan 13 are brought.

Die Sammel- und Verblockungseinrichtung 5 weist ein Stapelauflager 14 auf, das mit einem Bauteil 15 der im einzelnen nicht dargestellten Beutelherstellmaschine fest verbunden ist. Der Bauteil 15 kann entsprechend dem Doppelpfeil 16 entlang einer Führungssäule 17 im wesentlichen vertikal verstellt werden. Unterhalb des Stapelauflagers 14 befindet sich eine Nadelleiste 18, auf der mehrere in Reihe hintereinander angeordnete Dome 19 angeordnet sind, die jeweils durch eine Öffnung 21 im Stapelauflager 14 hindurchgeführt sind. Die Dome 19 sind als Fortsatz einer Glühkerze 22 ausgebildet, die im Bereich der Nadelleiste 18 angeordnet ist, die ihrerseits entsprechend der Doppelpfeilangabe 23 gleichfalls im wesentlichen in vertikaler Richtung verstellbar ist. Über die Glühkerze 22 ist der domartige Fortsatz bzw. der Dom 19 während der Stapelablage der Beutel ständig erwärmt, so daß sich die Glühkerze von unten her durch die Folienwandung der abgelegten Beutel hindurch brennt. Je nach Größe der Beutel können mehrere Glühkerzen hintereinander angeordnet sein. Nach dem Verblocken der einzelnen Beutel miteinander zu einem Beutelpaket kann in nicht dargestellter Weise mit einer Stanzeinrichtung beispielsweise ein Ausschnitt für die Erstellung von Hemdchentragetaschen erzeugt werden.The collecting and interlocking device 5 has a stack support 14, which with a component 15 of the bag making machine, not shown in detail connected is. The component 15 can according to the double arrow 16 along a Guide column 17 can be adjusted substantially vertically. Below the stack support 14 is a needle bar 18 on which several in a row arranged dome 19 are arranged, each through an opening 21 in the stack support 14 are passed. The domes 19 are an extension of a glow plug 22 formed, which is arranged in the region of the needle bar 18, which in turn accordingly the double arrow 23 also essentially in the vertical direction is adjustable. The dome-like extension or dome 19 is above the glow plug 22 during the stacking of the bags constantly heated, so that the glow plug from burns down through the foil wall of the stored bags. Depending on The size of the bag can be arranged several glow plugs one behind the other. To the blocking of the individual bags together to form a bag package cannot illustrated manner with a punching device, for example, a cutout for the Creation of shirt carrier bags can be generated.

Wie aus Figur 2 hervorgeht, weist die Stange 9 bzw. 11 einen inneren Lagerzapfen 24 auf, auf der ein Rohr 25 bzw. eine Hülse drehbar gelagert ist. Einzelheiten der Ausbildung einer Stange und deren Befestigung an der Antriebskette 8 ergeben sich aus Figur 6. In dem dort dargestellten Ausführungsbeispiel ist der Lagerzapfen 24 an seiner einen, nämlich linken Seite, mit einem konisch ausgebildeten Begrenzungselement 26 fest verbunden, das über eine angedeutete Schraube 27 mit einem Kettenglied der Antriebskette 8 verbunden ist. Auf der gegenüberliegenden Seite des Lagerzapfens 24 ist ein lösbares Begrenzungselement 28, das gleichfalls konisch ausgebildet ist angeordnet und gleichfalls über eine verlängert ausgebildete Schraube 29 mit dem Lagerzapfen 24 einerseits und einem Kettenglied der Antriebskette 8 verbunden. Durch die konischen Begrenzungselemente 26 und 28 wird sichergestellt, daß sich das Rohr 25, das gegebenenfalls auch aus mehreren Rohrhülsen bestehen kann, lose auf dem feststehenden Lagerzapfen 24 drehen kann und sich axial nicht verschieben kann. Die erfindungsgemäße Vorrichtung arbeitet wie folgt:As can be seen from FIG. 2, the rod 9 or 11 has an inner bearing pin 24 on which a tube 25 or a sleeve is rotatably mounted. Details of the Formation of a rod and its attachment to the drive chain 8 result from Figure 6. In the embodiment shown there, the journal 24 is on his one, namely the left side, with a conical limiting element 26 firmly connected, the via an indicated screw 27 with a chain link Drive chain 8 is connected. On the opposite side of the journal 24 is a releasable limiting element 28, which is also conical arranged and also via an elongated screw 29 with the Bearing pin 24 connected on the one hand and a chain link of the drive chain 8. By the conical limiting elements 26 and 28 ensures that the tube 25, which may also consist of several tube sleeves, loosely on the fixed pivot 24 can rotate and can not move axially. The The device according to the invention operates as follows:

Bei der in Figur 1 dargestellten Grundstellung der Vorrichtung befindet sich die eine Stange 9 geringfügig oberhalb der Transportebene der Kunststoffolienbahn 1, während die andere Stange 11 mit einem gewissen Abstand dazu unterhalb der Bewegungsebene des Kunststoffolienbandes 1 liegt. Nachdem nun ein Beutel 12 durch die Quertrenn-Schweißeinrichtung 4 von der Kunststoffolienbahn 1 abgetrennt ist, also nach dem Quertrennschweißvorgang, beginnt die Stangenbewegung der Einzugseinrichtung 6 im Gegenuhrzeigersinn. Dabei kommen die Stangen 9 und 11, d. h. genau genommen die verdrehbaren Rohre 25 mit dem hinteren Ende des Beutels 12 in Berührung, wodurch dieser Beutelbereich in dem in Figur 3 gezeigten Umfang abgelenkt wird. Die Stangen 9, 11 drehen sich dabei im Sinne der angedeuteten Pfeilrichtungen. Da sich bei der beschriebenen Bewegung die Folienoberfläche des Beutels auf dem drehenden Rohr 25 abrollt, ergibt sich eine vergleichweise geringe Reibung, die es ohne nennenswerte Beeinträchtigung ermöglicht, den hinteren Teil des Beutels in den Bereich des Fächers 13 zu bringen, so wie das aus Figur 5 ersichtlich ist. Bei der dort gezeigten Stellung hat das hintere Ende des Beutels 12 die nunmehr oben liegende rechte Stange 11 bereits verlassen, jedoch steht die untere Rolle 9 noch mit dem Folienende in Berührung, bis nach weiterer Bewegung auch diese schließlich vom Folienende freikommt und dieses vollständig in den Bereich des Fächers 13 gelangt ist, in der die einzelnen Enden im Sinne einer guten Ablage auf dem Stapelauflager aufgefächert werden.One is in the basic position of the device shown in FIG Rod 9 slightly above the transport plane of the plastic sheet 1, while the other rod 11 at a certain distance from it below the plane of movement of the plastic film tape 1. Now that a bag 12 through the cross-cut welding device 4 is separated from the plastic sheet 1, that is after Cross-cut welding process, the rod movement of the feed device 6 begins Counterclockwise. The rods 9 and 11, i.e. H. actually the rotatable tubes 25 in contact with the rear end of the bag 12, whereby this bag area is deflected to the extent shown in FIG. 3. The bars 9, 11 rotate in the sense of the indicated arrow directions. Since at the movement described the film surface of the bag on the rotating tube 25th rolls off, there is a comparatively low friction, which there is no significant Impairment allows the back of the bag to enter the area of the fan To bring 13, as can be seen from Figure 5. In the position shown there the rear end of the bag 12 already has the right rod 11 now at the top leave, however, the lower roll 9 is still in contact with the film end until after further movement this also finally comes free from the end of the film and this has completely reached the area of the fan 13 in which the individual ends in Fanned out on the stack support for good storage.

Claims (10)

  1. Apparatus for the transverse severing/welding and stackwise collection and block formation of bags (12) produced from a plastic-film web (1), in particular shirt-carrying bags, having a transverse severing/welding arrangement (4), a downstream collecting and block-forming arrangement (5), as seen in the film-web-running direction, and a drawing-in arrangement (6), which is arranged between said collecting and block-forming arrangement and the transverse severing/welding arrangement (4) and has at least one rod, preferably two rods (9, 11) which extend essentially transversely to the web-running direction, can be moved through the film-web plane by means of drive elements (8) driven in circulation and, in the process, deflect a sub-region of each bag (12), characterized in that each rod (9, 11) has at least one surface which rolls in relation to the bag (12) or plastic-film web (1) moved in the transporting direction.
  2. Apparatus according to Claim 1, characterized in that the rod (9, 11) itself is designed such that it can be rotated about its longitudinal axis.
  3. Apparatus according to Claim 1 or 2, characterized in that the rod (9, 11) is mounted on drive chains (8) which are spaced apart opposite one another in pairs and are guided over deflecting wheels (7) arranged above and beneath the plastic-film-web plane.
  4. Apparatus according to Claim 3, characterized in that the rod (9, 11) as a whole is mounted rotatably in the form of a rolling rod between the drive chains (8).
  5. Apparatus according to Claim 3, characterized in that the rod (9, 11) has a bearing journal (24), which is mounted non-rotatably on the drive chains (8), and a tube (25), which is mounted rotatably on said bearing journal.
  6. Apparatus according to Claim 5, characterized in that the tube (25) is formed by a plurality of tubular sleeves arranged on the bearing journal without any spacing between them.
  7. Apparatus according to Claim 5 or 6, characterized in that, in order to bound the tube (25) or the tubular sleeves axially, essentially conical boundary elements (26, 28) are arranged at the end regions of the bearing journal (24).
  8. Apparatus according to Claim 7, characterized in that one boundary element (26) is formed integrally with, or fixed to, the bearing journal (24), while the other boundary element (28) is connected releasably to the bearing journal (24).
  9. Apparatus according to Claim 8, characterized in that the rod (9, 11) or the bearing journal (24) is fastened on the drive chains (8) by fastening screws (27, 29).
  10. Apparatus according to Claim 9, characterized in that one fastening screw (29) serves, at the same time, for releasably fastening one boundary element (28) on the bearing journal (24).
EP98105711A 1997-07-03 1998-03-28 Machine for delivering and stacking bags, fabricated from a thermoplastic web Expired - Lifetime EP0888876B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19728371A DE19728371C1 (en) 1997-07-03 1997-07-03 Device for cross-welding separation and stack-wise collecting and blocking of bags made of a plastic film web, in particular shirt-carrying bags
DE19728371 1997-07-03

Publications (2)

Publication Number Publication Date
EP0888876A1 EP0888876A1 (en) 1999-01-07
EP0888876B1 true EP0888876B1 (en) 2002-01-16

Family

ID=7834491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98105711A Expired - Lifetime EP0888876B1 (en) 1997-07-03 1998-03-28 Machine for delivering and stacking bags, fabricated from a thermoplastic web

Country Status (6)

Country Link
US (1) US5947882A (en)
EP (1) EP0888876B1 (en)
DE (2) DE19728371C1 (en)
DK (1) DK0888876T3 (en)
ES (1) ES2172049T3 (en)
PT (1) PT888876E (en)

Cited By (2)

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EP1371475A2 (en) 2002-06-10 2003-12-17 WindmÀ¶ller & Hölscher Apparatus for makinq a joint by simultaniously welding and cutting
DE10231770A1 (en) * 2002-07-13 2004-02-05 Windmöller & Hölscher Kg Simultaneous separating and welding device for foil tube used for bag manufacture, has flexible absorbing unit with spring steel sheet at surface, which is provided at portion of surface of bottom welding terminal

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
CN108044989B (en) * 2017-12-29 2023-09-01 山东新华医疗器械股份有限公司 Blood bag making machine

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
EP1371475A2 (en) 2002-06-10 2003-12-17 WindmÀ¶ller & Hölscher Apparatus for makinq a joint by simultaniously welding and cutting
DE10231770A1 (en) * 2002-07-13 2004-02-05 Windmöller & Hölscher Kg Simultaneous separating and welding device for foil tube used for bag manufacture, has flexible absorbing unit with spring steel sheet at surface, which is provided at portion of surface of bottom welding terminal
DE10231770B4 (en) * 2002-07-13 2009-01-15 Windmöller & Hölscher Kg Separating seam welding device

Also Published As

Publication number Publication date
US5947882A (en) 1999-09-07
DE59802611D1 (en) 2002-02-21
ES2172049T3 (en) 2002-09-16
PT888876E (en) 2002-06-28
DE19728371C1 (en) 1999-01-14
DK0888876T3 (en) 2002-04-02
EP0888876A1 (en) 1999-01-07

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