DE10234510A1 - Transverse welding or welding and cutting equipment for plastic films used in bag and sack production has a welding bar whose movement is produced by contraction of a hose length under internal pressure - Google Patents

Transverse welding or welding and cutting equipment for plastic films used in bag and sack production has a welding bar whose movement is produced by contraction of a hose length under internal pressure Download PDF

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Publication number
DE10234510A1
DE10234510A1 DE10234510A DE10234510A DE10234510A1 DE 10234510 A1 DE10234510 A1 DE 10234510A1 DE 10234510 A DE10234510 A DE 10234510A DE 10234510 A DE10234510 A DE 10234510A DE 10234510 A1 DE10234510 A1 DE 10234510A1
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Germany
Prior art keywords
welding
welding bar
bar
produced
contraction
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DE10234510A
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German (de)
Inventor
Heiko Knoll
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Lemo Maschinenbau GmbH
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Lemo Maschinenbau GmbH
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Priority to DE10234510A priority Critical patent/DE10234510A1/en
Publication of DE10234510A1 publication Critical patent/DE10234510A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • B29C66/82421—Pneumatic or hydraulic drives using an inflatable element positioned between the joining tool and a backing-up part
    • 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
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/851—Bag or container making machines
    • B29C66/8511—Bag making machines
    • 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
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A welding bar(5) moves backwards and forwards in relation to a plastic film passing below it. Bar movement is produced by one or more pressure hoses(1,2,3,4) whose diameter increases when the length contracts. At least one, preferably two pressure hoses(1,2,3,4) are located at the opposing ends(6,7) of the welding bar to produce a guided movement of the bar perpendicular to the transporting direction of the plastic film. Contraction of the hose is produced by filling with compressed air.

Description

Die Erfindung betrifft eine Vorrichtung zum Querschweißen oder Quertrennschweißen von Kunststoffolien für eine Maschine zur Herstellung von Beuteln, Säcken oder dergleichen, mit mindestens einem hin- und herbeweglichen Schweißbalken unter dem die Kunststoffolien zum Verschweißen hindurchgeführt werden.The invention relates to a device for cross welding or cross cut welding of plastic films for a machine for the production of bags, sacks or the like, with at least one reciprocating welding bar under which the plastic films for welding passed become.

Eine Vorrichtung zur Herstellung von Beuteln und Säcken aus Schlauch- oder Halbschlauchbahnen aus thermoplastischem Kunststoff ist aus der DE-A1 39 31 967 bekannt. Für den Antrieb des verstellbaren Schweißbalkens ist bei der bekannten Maschine ein um 360° umlaufender Kurbeltrieb vorgesehen, dessen Servomotor so geschaltet werden kann, daß der Schweißbalken gegebenenfalls mit gewünschter Beschleunigung oder Verzögerung angetrieben wird. Die Verstellbewegung des Schweißbalkens entspricht einem entsprechenden ersten Anteil des Drehwinkels des Kurbeltriebs, während der restliche Drehwinkel bis zur Erlangung der vollen Umdrehung entsprechend der aktuellen Drehzahl durchlaufen wird. Dieser kontinuierliche bzw. asymmetrische Schweißbalkenantrieb jeweils über eine volle Umdrehung stellt keine optimale Ausnutzung der Maschinenleistung dar.A device for the production of bags and sacks from tubular or semi-tubular webs made of thermoplastic material is from the DE-A1 39 31 967 known. For the drive of the adjustable welding bar a 360 ° rotating crank drive is provided in the known machine, the servo motor can be switched so that the welding bar is driven with the desired acceleration or deceleration, if necessary. The adjustment movement of the welding bar corresponds to a corresponding first portion of the angle of rotation of the crank drive, while the remaining angle of rotation is run through until the full rotation is achieved in accordance with the current speed. This continuous or asymmetrical welding beam drive, each over a full revolution, does not represent optimal use of the machine performance.

Aus der US 3,965,333 ist ein weiterer Antrieb für eine Schweißbalkenanlage bekannt. Die Hin- und Herbewegung der Schweißbalken wird dabei über eine Hebelanordnung, die über einen pneumatischen Zylinder angetrieben wird, realisiert. Dabei ist der Pneumatikzylinder im unteren Teil der Maschine angeordnet, wobei die Kraft über Hebel direkt an den unteren Schweißbalken weitergeleitet und über eine Verbindungsstange an die oberen Hebel und somit an den oberen Schweißbalken weitergeleitet wird.From the US 3,965,333 Another drive for a welding beam system is known. The back and forth movement of the welding bars is realized via a lever arrangement that is driven by a pneumatic cylinder. The pneumatic cylinder is arranged in the lower part of the machine, the force being transmitted directly to the lower welding bar via levers and passed on to the upper levers and thus to the upper welding bar via a connecting rod.

Die beschriebenen Antriebe für Schweißbalken von Maschinen zur Erzeugung von Schweißnähten von Schlauch- oder Halbschlauchbahnen besitzen beide sehr aufwendige konstruktive Lösungen für das Bewegen der Schweißbalken. Neben den daraus resultierenden hohen Herstellungskosten für die Maschinen können auch, zum Beispiel durch ein Ausschlagen der Lagerpunkte, Ungenauigkeiten und Fehler bei den Schweißungen auftreten.The described drives for welding beams of machines for producing welds of tubular or semi-tubular webs both have very complex constructive solutions for moving the welding bars. In addition to the resulting high manufacturing costs for the machines can also, for example by knocking out the bearing points, inaccuracies and errors in the welds occur.

Aufgabe der Erfindung ist es daher, eine Vorrichtung der eingangs beschriebenen Art zu schaffen, die mit minimalem konstruktivem Aufwand eine Hin- und Herbewegung der Schweißbalken realisiert und die gleichzeitig eine Leistungssteigerung der Maschine ermöglicht.The object of the invention is therefore to create a device of the type described above, the a back and forth movement of the welding bars realized and at the same time an increase in performance of the machine allows.

Die Aufgabe wird dadurch gelöst, daß die Hin- und Herbewegung des Schweißbalkens durch mindestens einen im Durchmesser expandierenden und in der Länge kontrahierenden Druckschlauch erfolgt.The task is solved by the fact that the and movement of the welding bar by at least one expanding in diameter and in the Length contracting Pressure hose is done.

Durch den erfindungsgemäßen Einsatz eines Druckschlauchs wird mit minimalsten Mitteln und geringstem konstruktivem Aufwand eine Hin- und Herbewegung des Schweißbalkens realisiert. Insbesondere durch die direkte Anbindung des Druckschlauchs an den Schweißbalken kann auf Hebel und Exzenterantriebe verzichtet werden, was die Herstellungskosten der Maschine wesentlich verringert. Die besondere Ausbildung der Druckschläuche bewirkt, daß diese bei einer Beaufschlagung mit einem Druck, wobei insbesondere Preßluft verwendet wird, im Durchmesser expandieren und sich in der Länge zusammenziehen. Wird nun der Druckschlauch unmittelbar am Schweißbalken befestigt, so kann über das Zusammenziehen des Druckschlauchs eine Hin- und Herbewegung des Schweißbalkens erzeugt werden. Der Schweißbalken muß lediglich geführt und mit einer Rückstellfeder versehen werden. Die Druckschläuche werden vorteilhafterweise an den seitlichen Enden des Schweißbalkens befestigt, wobei mindestens ein Druckschlauch je Seite verwendet wird.Through the use according to the invention a pressure hose is made with minimal means and least constructive effort a back and forth movement of the welding bar realized. In particular through the direct connection of the pressure hose on the welding bars can be dispensed with levers and eccentric drives, which reduces the manufacturing costs the machine significantly reduced. The special training of Pressure hoses causes that these when pressure is applied, in particular using compressed air, expand in diameter and contract in length. Now the pressure hose is attached directly to the welding bar, so you can use the Contracting the pressure hose a reciprocating movement of the welding bar be generated. The welding bar only has to guided and with a return spring be provided. The pressure hoses are advantageously attached to the lateral ends of the welding bar, using at least one pressure hose per side.

Werden auf jeder Seite des Schweißbalkens zwei entgegengesetzt angeordnete Druckschläuche befestigt, so kann der Schweißbalken über den gesamten Hub der Druckschläuche beliebig positioniert werden. Über die Steuerung des Drucks in den Schläuchen kann ebenfalls ein Abbremsen des beschleunigten Schweißbalkens ermöglicht werden, so daß der Impuls beim Auftreffen des Schweißbalkens auf der Folienbahn, bzw. auf dem Gegenlager zum Schweißbalken minimiert wird.There will be two on each side of the welding bar attached opposite pressure hoses, so the Sweat bar over the entire stroke of the pressure hoses can be positioned anywhere. about controlling the pressure in the hoses can also slow down of the accelerated sweat bar allows be so that the Impulse when the welding bar hits the film, or is minimized on the counter bearing to the welding bar.

Vorteilhafterweise werden als Druckschläuche Pneumatikschläuche, die handelsüblich auch als pneumatische Muskel bezeichnet werden, verwendet. Zur Steuerung des Drucks in den Druckschläuchen werden bevorzugt elektrisch betriebene Servoventile eingesetzt.Pneumatic hoses are advantageously used as pressure hoses commercially also referred to as pneumatic muscle. For controlling the pressure in the pressure hoses electrically operated servo valves are preferred.

Die Servoventile ermöglichen ein nahezu verzögerungsfreies Ansteuern der Druckschläuche mit Druckluft, so daß die üblichen 300 Schweißzyklen pro Minute leicht zu realisieren sind.Enable the servo valves an almost instantaneous Activate the pressure hoses with Compressed air, so the usual 300 welding cycles per Minutes are easy to implement.

In der Zeichnung ist eine bevorzugte Ausführungsform einer Vorrichtung zum Bewegen eines Schweißbalkens in einer Maschine zur Herstellung von Beuteln, Säcken oder dergleichen dargestellt.In the drawing is a preferred one embodiment a device for moving a welding bar in a machine for the production of bags, sacks or the like.

Es zeigt:It shows:

1 die Seitenansicht einer Vorrichtung zur Positionierung eines Schweißbalkens. 1 the side view of a device for positioning a welding bar.

Vorteilhafterweise wird an jedem Ende 6, 7 des Schweißbalkens 5 mindestens je ein Druckschlauch 1, 2, 3, 4 angeordnet. Über die Druckschläuche 1, 2, 3, 4 werden Zugkräfte erzeugt, so dass der Schweißbalken geführt und mit einer Rückstellfeder versehen werden muß.Advantageously, at each end 6 . 7 of the sweat bar 5 at least one pressure hose each 1 . 2 . 3 . 4 arranged. About the pressure hoses 1 . 2 . 3 . 4 tensile forces are generated so that the welding bar is guided and with a back spring must be provided.

Die in 1 dargestellte Vorrichtung enthält obere 1, 2 und untere Druckschläuche 3, 4 und einen Schweißbalken 5, wobei an jedem Ende 6, 7 des Schweißbalkens 5 mindestens je zwei sich gegenüberliegend angeordnete, als pneumatische Muskel ausgeführte Druckschläuche 1, 2, 3, 4 angeordnet sind, um eine geführte Bewegung des Schweißbalkens 5 senkrecht zur Transportrichtung der Kunststoffbahn zu realisieren. Da die Druckschläuche 1, 2, 3, 4 lediglich Zugkräfte erzeugen können, ist die gegenüberliegende Anordnung der Druckschläuche vorteilhaft, da die Druckschläuche den Schweißbalken 5 durch Kontraktion der oberen 1, 2 oder unteren 3, 4 Druckschläuche in jede beliebige Position bewegen können, wobei die Hin- und Herbewegung des Schweißbalkens (5) durch mindestens einen im Durchmesser expandierenden und in der Länge (L) kontrahierenden, pneumatischen Druckschlauch (1, 2, 3, 4) erfolgt.In the 1 shown device contains upper 1 . 2 and lower pressure hoses 3 . 4 and a sweat bar 5 , being at each end 6 . 7 of the sweat bar 5 at least two opposing pressure hoses designed as pneumatic muscles 1 . 2 . 3 . 4 are arranged to perform a guided movement of the welding bar 5 to be realized perpendicular to the direction of transport of the plastic sheet. Because the pressure hoses 1 . 2 . 3 . 4 can only generate tensile forces, the opposite arrangement of the pressure hoses is advantageous because the pressure hoses the welding bar 5 by contraction of the upper 1 . 2 or lower 3 . 4 Can move pressure hoses to any position, the reciprocation of the welding bar ( 5 ) by at least one pneumatic pressure hose expanding in diameter and contracting in length (L) ( 1 . 2 . 3 . 4 ) he follows.

In der dargestellten Ausführungsform sind die unteren Druckschläuche 3, 4 druckbeaufschlagt, so daß sie radial expandieren und sich in ihrer Länge zusammenziehen, dabei bewegt sich der Schweißbalken 5 um die Strecke L aus seiner Ursprungsposition 8 in Richtung der kontrahierten Druckschläuche 3, 4. Durch die Kontraktion des Druckschlauchs kann seine Nennlänge um ca. 20 bis 25 % verkürzt werden. Werden nun die unteren Druckschläuche 3, 4 über das elektrisch betätigte Servoventil drucklos geschaltet und werden gleichzeitig die oberen Druckschläuche 1, 2 mit Druck beaufschlagt, dann bewegt sich der Schweißbalken 5 um die Strecke L in die Position 8 zurück.In the illustrated embodiment, the lower pressure hoses are 3 . 4 pressurized so that they expand radially and contract in length, the welding bar moves 5 by the distance L from its original position 8th towards the contracted pressure hoses 3 . 4 , By contraction of the pressure hose, its nominal length can be shortened by approx. 20 to 25%. Now the lower pressure hoses 3 . 4 Depressurized via the electrically operated servo valve and at the same time the upper pressure hoses 1 . 2 pressurized, then the welding bar moves 5 by the distance L into the position 8th back.

Neben dem minimalen konstruktiven Aufwand, den der Einsatz von Druckschläuchen 1, 2, 3, 4 bietet, ergibt sich ein weiterer Vorteil, nämlich der, daß Druckschläuche 1, 2, 3, 4 im Gegensatz zu zum Beispiel Druckluftzylindern keine Massenträgheit besitzen. Es sind auch keine reibungsbedingten Kräfte, wie sie zum Beispiel bei Gestängeantrieben vorkommen, zu überwinden. Diese Vorteile führen dazu, daß die zu erzielenden Taktfrequenzen mit Druckschläuchen 1, 2, 3, 4 über denen eines Druckzylinders liegen.In addition to the minimal design effort that the use of pressure hoses 1 . 2 . 3 . 4 offers, there is a further advantage, namely that pressure hoses 1 . 2 . 3 . 4 in contrast to, for example, compressed air cylinders have no inertia. There are also no friction-related forces, such as those that occur with linkage drives, to be overcome. These advantages lead to the fact that the clock frequencies to be achieved with pressure hoses 1 . 2 . 3 . 4 lie above those of a printing cylinder.

Zur Steuerung der Druckluft werden elektrisch betriebene Servoventile eingesetzt. So können mit Druckschläuchen 1, 2, 3, 4 in Kombination mit elektrisch betriebenen Servoventilen die geforderten Taktfrequenzen realisiert werden, so daß keine Verzögerungszeiten durch den Antrieb des Schweißbalkens 5 entstehen, was wiederum zu einer Leistungssteigerung der Maschine führt.Electrically operated servo valves are used to control the compressed air. So with pressure hoses 1 . 2 . 3 . 4 in combination with electrically operated servo valves, the required clock frequencies can be realized, so that no delay times due to the drive of the welding bar 5 arise, which in turn leads to an increase in performance of the machine.

Claims (5)

Vorrichtung zum Querschweißen oder Quertrennschweißen von Kunststoffolien für eine Maschine zur Herstellung von Beuteln, Säcken oder dergleichen, mit mindestens einem hin- und herbeweglichen Schweißbalken (5) unter dem die Kunststoffolien zum Verschweißen hindurchgeführt werden, dadurch gekennzeichnet, daß die Hin- und Herbewegung des Schweißbalkens (5) durch mindestens einen im Durchmesser expandierenden und in der Länge (L) kontrahierenden Druckschlauch (1, 2, 3, 4) erfolgt.Device for cross welding or cross cut welding of plastic films for a machine for the production of bags, sacks or the like, with at least one reciprocating welding bar ( 5 ) under which the plastic foils are passed for welding, characterized in that the reciprocating movement of the welding bar ( 5 ) by at least one pressure hose expanding in diameter and contracting in length (L) ( 1 . 2 . 3 . 4 ) he follows. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß an jedem Ende (6, 7) des Schweißbalkens (5) mindestens je ein Druckschlauch (1, 2, 3, 4) angeordnet ist.Device according to claim 1, characterized in that at each end ( 6 . 7 ) of the welding bar ( 5 ) at least one pressure hose each ( 1 . 2 . 3 . 4 ) is arranged. Vorrichtung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß an jedem Ende (6, 7) des Schweißbalkens (5) mindestens je zwei sich gegenüberliegend angeordnete Druckschläuche (1, 2, 3, 4) angeordnet sind, so daß eine geführte Bewegung des Schweißbalkens senkrecht zur Transportrichtung der Kunststoffbahn realisiert ist.Device according to one of claims 1 and 2, characterized in that at each end ( 6 . 7 ) of the welding bar ( 5 ) at least two pressure hoses arranged opposite each other ( 1 . 2 . 3 . 4 ) are arranged so that a guided movement of the welding bar perpendicular to the direction of transport of the plastic sheet is realized. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Druckschlauch (1, 2, 3, 4) zum Kontrahieren mit Druckluft gefüllt wird.Device according to one of claims 1 to 3, characterized in that the pressure hose ( 1 . 2 . 3 . 4 ) is filled with compressed air for contracting. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß zur Steuerung der Druckluft elektrisch betriebene Servoventile eingesetzt sind.Device according to one of claims 1 to 4, characterized in that that for Control of the compressed air used electrically operated servo valves are.
DE10234510A 2002-07-30 2002-07-30 Transverse welding or welding and cutting equipment for plastic films used in bag and sack production has a welding bar whose movement is produced by contraction of a hose length under internal pressure Withdrawn DE10234510A1 (en)

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DE10234510A DE10234510A1 (en) 2002-07-30 2002-07-30 Transverse welding or welding and cutting equipment for plastic films used in bag and sack production has a welding bar whose movement is produced by contraction of a hose length under internal pressure

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DE10234510A DE10234510A1 (en) 2002-07-30 2002-07-30 Transverse welding or welding and cutting equipment for plastic films used in bag and sack production has a welding bar whose movement is produced by contraction of a hose length under internal pressure

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DE102006049067A1 (en) * 2006-10-13 2008-04-17 Cfs Germany Gmbh Packaging machine with a pneumatic muscle
WO2018089504A1 (en) * 2016-11-08 2018-05-17 Ameriglobe, Llc Stitchless bulk bag with heat fused seams and method of production
US10974869B2 (en) 2013-06-05 2021-04-13 Ameriglobe, Llc Method of production of fabric bags or containers using heat fused seams

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DE19917483A1 (en) * 1999-04-17 2000-10-19 Festo Ag & Co Actuating unit activated by fluid power has force transmission component attached to one head piece and extends in direction of second head piece and passes through it with axial movement and co-axially to contraction sleeve
DE10005020A1 (en) * 2000-02-04 2001-08-09 Rovema Gmbh Thermoplastics welding equipment for production of tubular bags from plastic film has a heat sealing band on a deformable support

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DE19917483A1 (en) * 1999-04-17 2000-10-19 Festo Ag & Co Actuating unit activated by fluid power has force transmission component attached to one head piece and extends in direction of second head piece and passes through it with axial movement and co-axially to contraction sleeve
DE10005020A1 (en) * 2000-02-04 2001-08-09 Rovema Gmbh Thermoplastics welding equipment for production of tubular bags from plastic film has a heat sealing band on a deformable support

Cited By (8)

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DE102006049067A1 (en) * 2006-10-13 2008-04-17 Cfs Germany Gmbh Packaging machine with a pneumatic muscle
US10974869B2 (en) 2013-06-05 2021-04-13 Ameriglobe, Llc Method of production of fabric bags or containers using heat fused seams
US11279523B2 (en) 2013-06-05 2022-03-22 Ameriglobe, Llc Method of production of fabric bags or containers using heat fused seams
US11858691B2 (en) 2013-06-05 2024-01-02 Ameriglobe, Llc Method of production of fabric bags or containers using heat fused seams
WO2018089504A1 (en) * 2016-11-08 2018-05-17 Ameriglobe, Llc Stitchless bulk bag with heat fused seams and method of production
CN110191848A (en) * 2016-11-08 2019-08-30 环美有限公司 Needleless seam loose bags and its production method with heat fusion seam
US10618225B2 (en) 2016-11-08 2020-04-14 Ameriglobe, Llc Carrier plate for use in manufacturing stitchless bulk bags with heat fused seams
US11338527B2 (en) 2016-11-08 2022-05-24 Ameriglobe, Llc Heat seal bar assembly

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