EP0084880A2 - Device for tranversely cutting webs - Google Patents

Device for tranversely cutting webs Download PDF

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Publication number
EP0084880A2
EP0084880A2 EP83100595A EP83100595A EP0084880A2 EP 0084880 A2 EP0084880 A2 EP 0084880A2 EP 83100595 A EP83100595 A EP 83100595A EP 83100595 A EP83100595 A EP 83100595A EP 0084880 A2 EP0084880 A2 EP 0084880A2
Authority
EP
European Patent Office
Prior art keywords
pressure bar
web
cutting knife
counter
cross
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP83100595A
Other languages
German (de)
French (fr)
Other versions
EP0084880A3 (en
EP0084880B1 (en
Inventor
Fritz Achelpohl
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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Filing date
Publication date
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP0084880A2 publication Critical patent/EP0084880A2/en
Publication of EP0084880A3 publication Critical patent/EP0084880A3/en
Application granted granted Critical
Publication of EP0084880B1 publication Critical patent/EP0084880B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/14—Means for treating work or cutting member to facilitate cutting by tensioning the work
    • 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
    • B31B2155/00—Flexible containers made from 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
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/003—Flexible containers made from webs starting from tubular 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1054—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing and simultaneously bonding [e.g., cut-seaming]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1313—Cutting element simultaneously bonds [e.g., cut seaming]

Definitions

  • the invention relates to a device for cross-cutting webs made of thermoplastic, preferably tubular webs in the manufacture of bags, with a pair of preferred rollers which advance the web clockwise by a length of web section, a heated cross-cutting knife preferably arranged parallel to a cross-welding device, with a counter-pressure bar and with a pressure bar lowering onto the separate section or sections.
  • the front end of a tubular web is separated by a blowing air nozzle arranged on both sides thereof generated blown air stream stretched forward and by A b-lowering a cross seal bar and a cross cutting knife, the front web section forming a bag is separated and a cross weld seam is attached to the front cut of the web, which forms the bottom seam of the bag separated in the following cycle.
  • the cross-cutting knives are also heated due to their proximity to the heated sealing bar, the cutting of multilayer foils, for example a tubular web, can lead to blocking of the foil webs on the cut surface, which is particularly undesirable if the cut causes the opening edges Bag to be formed. Furthermore, the cut surfaces of the film web can stick to the cutting knife, which can result in malfunctions.
  • the object of the invention is therefore to improve a device of the type mentioned at the outset in such a way that the cut surfaces of multilayer webs, for example tubular webs, cannot become blocked by the separating cut and that, furthermore, cut surfaces stick to the cutting knife.
  • this object is achieved in that two pressure bars which can be lowered and raised on the separate section or sections are provided parallel to one another, the front of which, in the advancing direction, clamps the web end presented between the cutting knife and the counter-pressure bar against a base and the one between the cutting knife and the front
  • the pressure bar arranged in the pressure bar clamps the web clamped between the pair of preferred rollers and the front pressure bar before the heated cutting knife cuts through them.
  • the first pressure bar lowers first, so that the web section on which the transverse welding and cross cutting takes place between the pair of preferred rollers and the Print bar is clamped.
  • the second pressure bar is close G egendruckance lowered, the web is resiliently biased because the counter pressure bar with the lower level, in which the leading web end is clamped, forming a step. If the heated knife is now provided with a cross-section by the heated knife, the cut surfaces snap away from the heated knife.
  • the upper layer of the web first detaches from the cutting knife and then the lower one, i.e. since the cutting surfaces of these webs separate from the cutting knife one after the other, these webs are also moved relative to each other and pulled away from each other so that sticking or blocking of these cut surfaces is excluded.
  • the elastic tension additionally leads to the rear ends of the bags or sections being hit smoothly on the stack being formed.
  • the pressure bar that excites the web after it has been clamped can also simultaneously function as a slider needling the section edges onto a row of needles for fixing them.
  • the preferred rollers 1 and 2 advance the plastic tubular web 3 in cycles by one bag length and clamp them firmly between them. Blown air nozzles, not shown, can be provided for stretching the front end of the web. If a sufficiently long piece of tubular web has now been pulled forward by the preferred rollers 1 and 2, the hold-down consisting of the pressure bar 4 first lowers a counter bearing, so that the web in the manner shown in FIG. 2 between the preferred rollers 1, 2, on the one hand, and un the pressure bar 4 and the counter bearing 5 is clamped. Immediately thereafter, the pressure pad 6 travels in the strength in F from the position shown in Fig. 1 position.
  • the pressure bar 6 moves into the position shown in FIG. 3 and thereby presses the bag separated from the web onto the support bar 13 connected to the counter pressure bar 8.
  • the welding jaws 11 are still closed and the transverse weld seam is formed.
  • the support bar 13 has through holes through which needles 12 protrude upward, so that the separated bag is needled at the same time.
  • the needles 12 are firmly connected to the angled profile of the counter bearing 5.
  • the pressure bar 6 also has holes so that the individual bags can be pushed onto the needles 12 against the support bar 13.
  • the indentation 14 under the groove 7 in the counter pressure bar 8 serves for the compression-free storage of the bag edges.
  • the individual elements' then move back into the position shown in FIG. 1, so that the web 3 is advanced by a further section length, possibly with the aid of blowing air nozzles, from the preferred rollers 1, 2 can.
  • the counter bearing 5 moves down, the needles 12 being pulled out of the stack of bags.
  • the tipper roller 15, which is controlled by the piston-cylinder unit 16 lowers onto the conveyor belt 17, which is then switched on for the removal of the stacks 18 formed.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Replacement Of Web Rolls (AREA)

Abstract

Eine Vorrichtung zum Querschneiden von Bahnen aus thermoplastischem Kunststoff, vorzugsweise von Schlauchbahnen bei der Herstellung von Beuteln, besteht aus einem die Bahn taktweise um eine Bahnabschnittslänge vorziehenden Vorzugsrollenpear, einem vorzugsweise parallel zu einer Querschweiseeinrichtung angeordneten, beheizten Querschneidmesser mit Gegendruckleiste und einer sich auf den oder die getrennten Abscnitte absenkenden Druckleiate. Um zu verhindern, dass mehrlagige Bahnen durch den Trennschnitt nicht miteinander verblocken, sind parallel zueinander zwei auf den oder die getrennten Abschnitte (18) absenkbare und hebbare Druckleiatan (4, 8) vorgesehen, von denen die in Vorschubrichtung vordere (4) das zwischen dem Schneidmesser (10) und der Gegendruckleiste (8) vorgetragene Bahnende gegen eine Unterlage (5) in einer tiefer als die Gegendruckleiste (8) liegenden Ebene festklemmt. Die zwischen dem Schneidmesser (10) und der vorderen Druckleiste (4) angeordnete Druckleiste (6) spannt die zwischen dem Vorzugsrollenpaar (1, 2) und der vorderen Druckleiste (4) eingeklemmte Bahn (3), bevor das beheizte Schneidmesser (10) diese durchtrennt.

Figure imgaf001
A device for cross-cutting webs made of thermoplastic, preferably tubular webs in the production of bags, consists of a preferential roller pair which cyclically advances the web by a length of web section, a heated cross-cutting knife, preferably arranged parallel to a cross-welding device, with a counter-pressure bar, and one on or the other separate sections lowering pressure parts. In order to prevent multilayered webs from blocking together due to the separating cut, two pressure liners (4, 8) which can be lowered and raised on the separate section (18) are provided in parallel, of which the front (4) in the feed direction is the one between the Cutting knife (10) and the counter pressure bar (8), the end of the web which is carried forward, is clamped against a base (5) in a plane lower than the counter pressure bar (8). The pressure bar (6) arranged between the cutting knife (10) and the front pressure bar (4) tensions the web (3) clamped between the pair of preferred rollers (1, 2) and the front pressure bar (4) before the heated cutting knife (10) severed.
Figure imgaf001

Description

Die Erfindung betrifft eine Vorrichtung zum Querschneiden von Bahnen aus thermoplastischem Kunststoff, vorzugsweise von Schlauchbahnen bei der Herstellung von Beuteln, mit einem die Bahn taktweise um eine Bahnabschnittlänge vorziehenden Vorzugsrollenpaar, einem vorzugsweise parallel zu einer Querschweiß-einrichtung angeordneten, beheizten Querschneidmesser mit Gegendruckleiste und mit einer sich auf den oder die getrennten Abschnitte absenkenden Druckleiste.The invention relates to a device for cross-cutting webs made of thermoplastic, preferably tubular webs in the manufacture of bags, with a pair of preferred rollers which advance the web clockwise by a length of web section, a heated cross-cutting knife preferably arranged parallel to a cross-welding device, with a counter-pressure bar and with a pressure bar lowering onto the separate section or sections.

Bei beispielsweise aus den DE-OS 22 54 448 und 29 40 399 sowie der DE-AS 19 30 841 bekannten Vorrichtungen dieser Art wird das vordere Ende einer Schlauchbahn durch einen von beidseits von dieser angeordneten Blasluftdüsen erzeugten Blasluftstrom gestreckt vorgetragen und durch Ab-senken einer Querschweißleiste und eines Querschneidmessers wird der jeweils einen Beutel bildende vordere Bahnabschnitt abgetrennt und neben dem Trennschnitt an dem vorderen Ende der Bahn eine Querschweißnaht angebracht, die die Bodennaht des bei dem folgenden Takt abgetrennten Beutels bildet. Da die Querschneidmesser durch ihre Nähe zu der beheizten Schweißleiste ebenfalls beheizt sind, kann es bei einem Schneiden von mehrlagigen Folien, beispielsweise einer Schlauchbahn, zu einem Verblocken der Folienbahnen an der Schnittfläche kommen, was insbesondere unerwünscht ist, wenn durch den Schnitt die Öffnungsränder eines Beutels gebildet-werden sollen. Weiterhin können die Schnittflächen der Folienbahn an dem Schneidmesser ankleben, was Betriebsstörungen zur Folge haben kann.In devices of this type known, for example, from DE-OS 22 54 448 and 29 40 399 and DE-AS 19 30 841, the front end of a tubular web is separated by a blowing air nozzle arranged on both sides thereof generated blown air stream stretched forward and by A b-lowering a cross seal bar and a cross cutting knife, the front web section forming a bag is separated and a cross weld seam is attached to the front cut of the web, which forms the bottom seam of the bag separated in the following cycle. Since the cross-cutting knives are also heated due to their proximity to the heated sealing bar, the cutting of multilayer foils, for example a tubular web, can lead to blocking of the foil webs on the cut surface, which is particularly undesirable if the cut causes the opening edges Bag to be formed. Furthermore, the cut surfaces of the film web can stick to the cutting knife, which can result in malfunctions.

Aufgabe der Erfindung ist es daher, eine Vorrichtung der eingangs angegebenen Art derart zu verbessern, daß die Schnittflächen mehrlagiger Bahnen, beispielsweise von Schlauchbahnen, durch den Trennschnitt nicht miteinander verblocken können und daß weiterhin ein Ankleben von Schnittflächen an dem Schneidmesser vermieden wird.The object of the invention is therefore to improve a device of the type mentioned at the outset in such a way that the cut surfaces of multilayer webs, for example tubular webs, cannot become blocked by the separating cut and that, furthermore, cut surfaces stick to the cutting knife.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß parallel zueinander zwei auf den oder die getrennten Abschnitte absenkbare und hebbare Druckleisten vorgesehen sind von denen die in Vorschubrichtung vordere das zwischen dem Schneidmesser und der Gegendruckleiste vorgetragene Bahnende gegen eine Unterlage festklemmt und die zwischen dem Schneidmesser und der vorderen Druckleiste angeordnete Druckleiste die zwischen dem Vorzugsrollenpaar und der vorderen Druckleiste eingeklemmte Bahn.spannt, bevor das beheizte Schneidmesser diese durchtrennt. Nachdem also die von dem Vorzugsrollenpaar vorgezogene Bahn beispielsweise durch einen Blasluftstrom zwischen die geöffneten Schweiß- und Schneideinrichtungen vorgetragen worden ist, senkt sich zunächst die erste Druckleiste ab, so daß der Bahnabschnitt, an dem die Querschweißung und das Querschneiden erfolgt, zwischen dem Vorzugsrollenpaar und der Druckleiste eingespannt ist. Wird nun die zweite Druckleiste dicht vor der Gegendruckleiste abgesenkt, wird die Bahn elastisch gespannt, da die Gegendruckleiste mit der tiefer liegenden Ebene, in der das vordere Bahnende festgeklemmt ist, eine Stufe bildet. Wird nun die elastisch gespannte Bahn durch das beheizte Messer mit einem Querschnitt versehen, schnellen die Schnittflächen von dem beheizten Messer weg.According to the invention, this object is achieved in that two pressure bars which can be lowered and raised on the separate section or sections are provided parallel to one another, the front of which, in the advancing direction, clamps the web end presented between the cutting knife and the counter-pressure bar against a base and the one between the cutting knife and the front The pressure bar arranged in the pressure bar clamps the web clamped between the pair of preferred rollers and the front pressure bar before the heated cutting knife cuts through them. After the web that has been pulled forward by the pair of preferred rollers has been carried between the opened welding and cutting devices, for example by a blown air stream, the first pressure bar lowers first, so that the web section on which the transverse welding and cross cutting takes place between the pair of preferred rollers and the Print bar is clamped. Now the second pressure bar is close G egendruckleiste lowered, the web is resiliently biased because the counter pressure bar with the lower level, in which the leading web end is clamped, forming a step. If the heated knife is now provided with a cross-section by the heated knife, the cut surfaces snap away from the heated knife.

Besteht die Bahn bei der Beutelherstellung aus einer Schlauchbahn, löst sich zunächst die obere Lage der Bahn von dem Schneidmesser und anschließend die tiefere.Da sich also beim Schneiden mehrlagiger Bahnen die Schnittflächen dieser Bahnen nacheinander von dem Schneidmesser lösen, werden diese auch relativ zueinander bewegt und voneinander weggezogen, so daß ein Verkleben oder Verblocken dieser Schnittflächen ausgeschlossen ist.If the web consists of a tubular web during bag production, the upper layer of the web first detaches from the cutting knife and then the lower one, i.e. since the cutting surfaces of these webs separate from the cutting knife one after the other, these webs are also moved relative to each other and pulled away from each other so that sticking or blocking of these cut surfaces is excluded.

Werden die Bahnabschnitte oder Beutel nach dem Trennschnitt gestapelt, führt zusätzlich die elastische Spannung dazu, daß die hinteren Enden der Beutel oder Abschnitte glatt auf den sich bildenden Stapel aufgeschlagen werden.If the web sections or bags are stacked after the separating cut, the elastic tension additionally leads to the rear ends of the bags or sections being hit smoothly on the stack being formed.

Die die Bahn nach ihrem Festklemmen spannende Druckleiste kann in-weiterer Ausgestaltung der Erfindung auch gleichzeitig die Funktion eines die Abschnittränder auf eine Nadelreihe zu ihrer Fixierung aufnadelnden Schiebers bilden.In a further embodiment of the invention, the pressure bar that excites the web after it has been clamped can also simultaneously function as a slider needling the section edges onto a row of needles for fixing them.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen beschrieben worden.Further advantageous embodiments of the invention have been described in the subclaims.

Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnung näher erläutert. In dieser zeigt

  • Fig. 1 eine Seitenansicht der Querschweiß- und Querschnedeinrichtung in schematischer Darstellung,
  • Fig. 2 die Vorrichtung nach Fig. 1 in einem Zustand, in dem der zwischen den Vorzugsrollen und einer Druckleiste festgeklemmte Bahnabschnitt durch eine weitere Druckleiste vor dem Trennschnitt gespannt wird,
  • Fig. 3 die Vorrichtung nach Fig. 1 mit auf die Nadelreihe aufgenadlten Öffnungrändern der Beutel und
  • Fig. 4 die Vorrichtung nach Fig. 1 zu Beginn des Abtransportes des fertigen Stapels nach Zurückziehen der Nadelreihe.
An embodiment of the invention is explained below with reference to the drawing. In this shows
  • 1 is a side view of the cross-welding and cross-cutting device in a schematic representation,
  • 2 shows the device according to FIG. 1 in a state in which the web section clamped between the preferred rollers and a pressure bar is tensioned by a further pressure bar before the separating cut,
  • F ig. 3 the device according to FIG. 1 with the edges of the pouches needled onto the row of needles and
  • Fig. 4 shows the device of Fig. 1 at the beginning of the removal of the finished stack after retracting the row of needles.

Bei der in der Zeichnung dargestellten Vorrichtung ziehen die Vorzugswalzen 1 und 2 die Kunststoffschlauchbahn 3 taktweise jeweils um eine Beutellänge vor und klemmen diese zwischen sich fest. Zum gestreckten Vortragen des vorderen Bahnendes können nicht dargestellte Blasluftdüsen vorgesehen werden. Ist nun durch die Vorzugsrollen 1 und 2 ein genügend langes Schlauchbahnstück vorgezogen worden, senkt sich zunächst der aus der Druckleiste 4 bestehende Niederhalter anf ein Gegenlager ab, so daß die Bahn in der aus Fig. 2 ersichtlichen Weise zwischen den Vorzugswalzen 1, 2 einerseits un der Druckleiste 4 und dem Gegenlager 5 eingeklemmt ist. Unmittelbar danach fährt die Druckleiste 6 aus der in Fig. 1 dargestellten Lage in die in Fig. 2 dargestellte und drückt die Bahn dabei so stark nach unten, daß sich die Bahn mit Spannung über die Nut 7 der Gegendruckleiste 8 legt. Die Bahn 3 wird sodann durch Herunterfahren des oberen Trennmesserhalters 9 mit dem an diesem befestigten Querschneidmesser 10 durchtrennt und gleichzeitig bzw. unmittelbar danach wird durch das dauerbeheizte Schweißbackenpaar 11 die Bodennaht gebildet.In the device shown in the drawing, the preferred rollers 1 and 2 advance the plastic tubular web 3 in cycles by one bag length and clamp them firmly between them. Blown air nozzles, not shown, can be provided for stretching the front end of the web. If a sufficiently long piece of tubular web has now been pulled forward by the preferred rollers 1 and 2, the hold-down consisting of the pressure bar 4 first lowers a counter bearing, so that the web in the manner shown in FIG. 2 between the preferred rollers 1, 2, on the one hand, and un the pressure bar 4 and the counter bearing 5 is clamped. Immediately thereafter, the pressure pad 6 travels in the strength in F from the position shown in Fig. 1 position. 2 shown and presses the web down so much that the web lies with tension over the groove 7 of the counter pressure bar 8. The web 3 is then by lowering the upper cutter holder 9 with the attached to it Cross-cutting knife 10 is cut and simultaneously or immediately thereafter the bottom seam is formed by the permanently heated pair of welding jaws 11.

Unmittelbar nach dem Schnitt fährt die Druckleiste 6 in die in Fig. 3 dargestellte Lage und drückt dabei den von der Bahn abgetrennten Beutel auf die mit der Gegendruckleiste 8 verbundene Auflageleiste 13. Während dieses Arbeitsschrittes sind die Schweißbacken 11 noch geschlossen und die Querschweißnaht wird gebildet. Die Auflageleiste 13 weist Durchgangsbohrungen auf, durch die Nadeln 12 nach oben hervorragen, so daß der abgetrennte Beutel gleichzeitig aufgenadelt wird. Die Nadeln 12 sind fest mit dem abgewinkelten Profil des Gegenlagers 5 verbunden.Immediately after the cut, the pressure bar 6 moves into the position shown in FIG. 3 and thereby presses the bag separated from the web onto the support bar 13 connected to the counter pressure bar 8. During this step, the welding jaws 11 are still closed and the transverse weld seam is formed. The support bar 13 has through holes through which needles 12 protrude upward, so that the separated bag is needled at the same time. The needles 12 are firmly connected to the angled profile of the counter bearing 5.

Auch die Druckleiste 6 weist Bohrungen auf, so daß die einzelnen Beutel auf die Nadeln 12 gegen die Auflageleiste 13 aufgeschoben werden können. Die Einbuchtung 14 unter der Nut 7 in der Gegendruckleiste 8 dient der stauchungsfreien Ablage der Beutelkanten.The pressure bar 6 also has holes so that the individual bags can be pushed onto the needles 12 against the support bar 13. The indentation 14 under the groove 7 in the counter pressure bar 8 serves for the compression-free storage of the bag edges.

Aus der in Fig. 3 gezeigten Lage fahren die einzelnen Elemente' sodann wieder in die in Fig. 1 dargestellte Lage zurück, so daß von den Vorzugsrollen 1, 2 die Bahn 3 um eine weitere Abschnittlänge, ggf. unter Zuhilfenahme von Blasluftdüsen, vorgezogen werden kann. Sobald genügend Beutel gestapelt worden sind, fährt das Gegenlager 5 nach unten, wobei sich die Nadeln 12 aus dem Beutelstapel herausziehen. Sobald dies geschehen ist, senkt sich die Tipperwalze 15, die über die Kolben-Zylinder-Einheit 16 gesteuert wird, auf das Förderband 17 ab, das sodann zum Abtransport der gebildeten Stapel 18 eingeschaltet wird.From the position shown in FIG. 3, the individual elements' then move back into the position shown in FIG. 1, so that the web 3 is advanced by a further section length, possibly with the aid of blowing air nozzles, from the preferred rollers 1, 2 can. As soon as sufficient bags have been stacked, the counter bearing 5 moves down, the needles 12 being pulled out of the stack of bags. As soon as this has been done, the tipper roller 15, which is controlled by the piston-cylinder unit 16, lowers onto the conveyor belt 17, which is then switched on for the removal of the stacks 18 formed.

Claims (5)

1. Vorrichtung zum Querschneiden von Bahnen aus thermoplastischem Kunststoff, vorzugsweise von Schlauchbahnen bei der Herstellung von Beuteln, mit einem die Bahn taktweise um eine Bahnabschnittlänge vorziehenden Vorzugsrollenpaar, einem vorzugsweise parallel zu einer Querschweißeinrichtung angeordneten, beheizten Querschneidmesser mit Gegendruckleiste und mit einer sich auf den oder die getrennten Abschnitte absenkenden Druckleiste, dadurch gekennzeichnet, daß parallel zueinander zwei auf den oder die getrennten Abschnitte (18) absenkbare und hebbare Druckleisten (4, 6) vorgesehen sind, von denen die in Vorschubrichtung vordere (4) das zwischen dem Schneidmesser (10) und der Gegendruckleiste (8) vorgetragene Bahnende gegen eine Unterlage (5) in einer tiefer als die Gegendruckleiste (8) liegenden Ebene festklemmt und die zwischen dem Schneidmesser (10) und der vorderen Druckleiste (4) angeordnete Druckleiste (6) die zwischen dem Vorzugsrollenpaar (1, 2) und der vorderen Druckleiste (4) eingeklemmte Bahn (3) spannt, bevor das beheizte Schneidmesser (10) diese durchtrennt.1.Device for cross-cutting webs made of thermoplastic, preferably tubular webs in the production of bags, with a pair of preferred rollers which advance the web clockwise by a length of web section, a heated cross-cutting knife preferably arranged parallel to a cross-welding device with a counter-pressure bar and with one on the or pressure bar lowering the separate sections, characterized in that two pressure bars (4, 6) which can be lowered and raised on the separate section (s) (18) are provided parallel to each other, of which the front (4) in the feed direction is the one between the cutting knife (10) and the counter pressure bar (8) carried forward web end against a base (5) in a lower than the counter pressure bar (8) level clamped and the between Cutting blades (10) and the front D jerk strip (4) arranged in the pressure pad (6) clamped between the preferential pair of rollers (1, 2) and the front pressure strip (4) web (3) tensioned before the heated cutting knife (10) cuts through that. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß unterhalb der die Bahn (3) spannenden Druckleiste (6) eine Nadelreihe (12) auf einem Nadelträger (5) angeordnet ist, auf die die mit entsprechenden Aussparungen oder Löchern versehene Druckleiste (6) die Abschnittränder nach dem Trennschnitt aufnadelt.2. Device according to claim 1, characterized in that below the web (3) exciting pressure bar (6) a row of needles (12) is arranged on a needle carrier (5) onto which the pressure bar (6) provided with corresponding recesses or holes is arranged. needles the section edges after the separating cut. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß unter der Gegendruckleiste (8) des Schneidmessers (10) zur stauchungsfreien Ablage der Abschnittränder eine Einziehung (14) vorgesehen ist.3. Apparatus according to claim 1 or 2, characterized in that a retraction (14) is provided under the counter pressure bar (8) of the cutting knife (10) for the compression-free storage of the section edges. 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Gegendruckleiste (8) mit einer Nut (7) zum Eintauchen des Schneidmessers (10) versehen ist.4. Device according to one of claims 1 to 3, characterized in that the counter pressure bar (8) with a groove (7) for immersing the cutting knife (10) is provided. 5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Nadelträger (5) absenkbar ausgebildet und die Nadeln (12) eine mit der Gegendruckleiste (8) verbundene Ablageleiste (13) durchsetzen.5. Device according to one of claims 1 to 4, characterized in that the needle carrier (5) is designed to be lowerable and the needles (12) pass through a support bar (13) connected to the counter-pressure bar (8).
EP83100595A 1982-01-25 1983-01-24 Device for tranversely cutting webs Expired EP0084880B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3202272 1982-01-25
DE3202272 1982-01-25
DE3204492 1982-02-10
DE19823204492 DE3204492A1 (en) 1982-01-25 1982-02-10 DEVICE FOR CROSS-SHAPING TRACKS

Publications (3)

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EP0084880A2 true EP0084880A2 (en) 1983-08-03
EP0084880A3 EP0084880A3 (en) 1985-01-30
EP0084880B1 EP0084880B1 (en) 1988-06-01

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ID=25799072

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EP83100595A Expired EP0084880B1 (en) 1982-01-25 1983-01-24 Device for tranversely cutting webs

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US (1) US4490207A (en)
EP (1) EP0084880B1 (en)
BR (1) BR8300138A (en)
CA (1) CA1194401A (en)
DE (1) DE3204492A1 (en)
DK (1) DK159676C (en)
ES (1) ES8402526A1 (en)

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FR2566741A1 (en) * 1984-07-02 1986-01-03 Lagain Georges DEVICE FOR CUTTING AND STORING BAGS IN PLASTIC MATERIAL AT THE OUTPUT OF A MACHINE FOR MANUFACTURING BAGS
DE3700067A1 (en) * 1986-01-02 1987-07-09 Fmc Corp DEVICE FOR PRODUCING AND STACKING BAGS
DE3713081A1 (en) * 1986-04-18 1987-10-29 Fmc Corp DEVICE FOR PRODUCING AND STACKING BAGS, BAGS AND THE LIKE
FR2625946A1 (en) * 1988-01-15 1989-07-21 Lagain Georges INSTALLATION FOR MANUFACTURING AND STACKING BAGS, BAGS, ETC. IN THERMOPLASTIC MATTER
EP0448819A1 (en) * 1990-03-26 1991-10-02 WindmÀ¶ller & Hölscher Method and device for forming stacks of bags which are held together with clamps
WO1993018917A1 (en) * 1992-03-24 1993-09-30 Ulrich Steinemann Ag Maschinenfabrik Process, device and installation for producing laminates
CN112895600A (en) * 2021-02-23 2021-06-04 重庆鼎盛印务股份有限公司 Packaging bag production is with cutting device

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DE3623004A1 (en) * 1986-07-09 1988-01-28 Wolfgang Mohr SURFACE MACHINE
IT1213658B (en) * 1987-07-28 1989-12-29 Colin Luis WELDING, CUTTING, WITHDRAWAL AND STORAGE DEVICE IN MACHINES FOR THE MANUFACTURE OF PLASTIC BAGS
DE3936515A1 (en) * 1989-11-02 1991-05-08 Windmoeller & Hoelscher DEVICE FOR CROSS-CUTTING AND CROSS-WELDING RAILWAYS
DE4029440A1 (en) * 1990-09-17 1992-03-19 Windmoeller & Hoelscher METHOD FOR PRODUCING PLASTIC BAGS
US6572724B1 (en) * 1992-03-10 2003-06-03 Gunther E. Asterlin Method for producing an improved seamless bag by heat sealing
CN1075034C (en) * 1994-10-07 2001-11-21 四国化工机株式会社 Narrow band connecting apparatus
DE19537833C1 (en) * 1995-10-11 1996-10-02 Bosch Gmbh Robert Cross seam sealing unit for bagging machine
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IT1391710B1 (en) * 2008-09-12 2012-01-27 Ciemme Group S R L METHOD AND MACHINE FOR CUTTING A PLASTIC FILM
US8776857B1 (en) 2013-02-04 2014-07-15 Computype, Inc. Label application devices

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566741A1 (en) * 1984-07-02 1986-01-03 Lagain Georges DEVICE FOR CUTTING AND STORING BAGS IN PLASTIC MATERIAL AT THE OUTPUT OF A MACHINE FOR MANUFACTURING BAGS
DE3700067A1 (en) * 1986-01-02 1987-07-09 Fmc Corp DEVICE FOR PRODUCING AND STACKING BAGS
DE3713081A1 (en) * 1986-04-18 1987-10-29 Fmc Corp DEVICE FOR PRODUCING AND STACKING BAGS, BAGS AND THE LIKE
US4798573A (en) * 1986-04-18 1989-01-17 Fmc Corporation Machine for the manufacture and stacking of bags, pouches and the like made from a thermoplastic material
FR2625946A1 (en) * 1988-01-15 1989-07-21 Lagain Georges INSTALLATION FOR MANUFACTURING AND STACKING BAGS, BAGS, ETC. IN THERMOPLASTIC MATTER
EP0329495A1 (en) * 1988-01-15 1989-08-23 Georges Lagain Installation for manufacturing and stacking thermoplastic bags, etc.
EP0448819A1 (en) * 1990-03-26 1991-10-02 WindmÀ¶ller & Hölscher Method and device for forming stacks of bags which are held together with clamps
WO1993018917A1 (en) * 1992-03-24 1993-09-30 Ulrich Steinemann Ag Maschinenfabrik Process, device and installation for producing laminates
US5518569A (en) * 1992-03-24 1996-05-21 Ulrich Steinemann Ag Process, device and installation for producing laminates
US5639335A (en) * 1992-03-24 1997-06-17 Ulrich Steinemann Ag Cutting process, device and installation for producing laminates
CN112895600A (en) * 2021-02-23 2021-06-04 重庆鼎盛印务股份有限公司 Packaging bag production is with cutting device

Also Published As

Publication number Publication date
EP0084880A3 (en) 1985-01-30
DK159676C (en) 1991-04-29
ES519215A0 (en) 1984-02-16
CA1194401A (en) 1985-10-01
DK29083A (en) 1983-07-26
DE3204492A1 (en) 1983-08-18
DK29083D0 (en) 1983-01-25
ES8402526A1 (en) 1984-02-16
EP0084880B1 (en) 1988-06-01
US4490207A (en) 1984-12-25
BR8300138A (en) 1983-10-04
DK159676B (en) 1990-11-19
DE3204492C2 (en) 1993-03-18

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