DE10231770A1 - 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 - Google Patents

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 Download PDF

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Publication number
DE10231770A1
DE10231770A1 DE10231770A DE10231770A DE10231770A1 DE 10231770 A1 DE10231770 A1 DE 10231770A1 DE 10231770 A DE10231770 A DE 10231770A DE 10231770 A DE10231770 A DE 10231770A DE 10231770 A1 DE10231770 A1 DE 10231770A1
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Germany
Prior art keywords
welding
bar
damping body
flexible
counter
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Granted
Application number
DE10231770A
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German (de)
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DE10231770B4 (en
Inventor
Friedrich Göcker
Hans-Ludwig Voss
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Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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Priority to DE10231770A priority Critical patent/DE10231770B4/en
Priority to DE50313060T priority patent/DE50313060D1/en
Priority to AT03010347T priority patent/ATE480389T1/en
Priority to EP03010347A priority patent/EP1371475B1/en
Priority to US10/448,199 priority patent/US6880742B2/en
Publication of DE10231770A1 publication Critical patent/DE10231770A1/en
Application granted granted Critical
Publication of DE10231770B4 publication Critical patent/DE10231770B4/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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • 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
    • 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
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • 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
    • B29C66/006—Preventing damaging, e.g. of the parts to be joined
    • B29C66/0062—Preventing damaging, e.g. of the parts to be joined of the joining tool, e.g. avoiding wear of the joining tool
    • 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
    • B29C66/431—Joining the articles to themselves
    • 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
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81417—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled being V-shaped
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81455—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps being a fluid inflatable bag or bladder, a diaphragm or a vacuum bag for applying isostatic pressure
    • 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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • B29C66/0044—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on the joining tool
    • B29C66/00441—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on the joining tool movable, e.g. mounted on reels
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/137—Beaded-edge joints or bead seals

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Abstract

A flexible absorbing unit (4) provided with a spring steel sheet at the surface is provided at a portion of the surface of bottom welding terminal (3) which faces a top welding terminal (2). An Independent claim is also included for process for simultaneous separating and welding of foils or foil tubes.

Description

Die Erfindung betrifft eine Vorrichtung zum gleichzeitigen Trennen und Schweißen von Folien oder Folienschläuchen, welche zumindest einen Schweißbalken und einen Gegenbalken aufweist.The invention relates to a device for simultaneous cutting and welding of foils or foil tubes, which at least one sweat bar and has a counter bar.

Solche Vorrichtungen werden in der Regel eingesetzt, um aus Folienschläuchen Beutel herzustellen. Beim Schweißvorgang werden der Schweißbalken und der Gegenbalken zusammengepresst. Hierbei entsteht wie erwähnt sowohl ein Trennschnitt als auch eine Schweißnaht, was den Produktionsvorgang beschleunigt. Unter anderem die EP 0 888 876 B1 zeigt eine solche Trennschweißvorrichtung mit einem Schweiß- und einem Gegenbalken.Such devices are generally used to produce bags from film tubes. During the welding process, the welding bar and the counter bar are pressed together. As mentioned, this creates both a separating cut and a weld seam, which speeds up the production process. Among other things, the EP 0 888 876 B1 shows such a separation welding device with a welding and a counter beam.

In der Regel ist der Gegenbalken von dem zu verschweißenden Material durch ein Teflonglasgewebe geschützt. Dieses Gewebe verhindert das Anhaften der Folien am Gegenbalken. In der Regel wird das Teflonglasgewebe an dem Gegenbalken vorbeibewegt. Hierbei erfolgt die Bewegung intermittierend, da das Teflonglasgewebe während des Schweißprozesses nicht bewegt werden kann.Usually the counterbar of the one to be welded Material protected by a Teflon glass fabric. This tissue prevents the foils stick to the counter beam. Usually the Teflon glass fabric moved past the counter beam. Here the movement is intermittent, because the Teflon glass fabric during of the welding process cannot be moved.

Die Kräfte sowie die Temperaturen, denen Schweiß- und Gegenbalken ausgesetzt sind, verursachen Verschleiß. Daher werden diese Elemente oft mit Federelementen versehen, welche mit den Balken und ihren Aufhängungen verbunden sind.The forces and the temperatures, whom sweat and exposed to counterbeams cause wear. Therefore these elements are often provided with spring elements, which with the beam and its suspensions are connected.

Eine weitere Methode, den Verschleiß zu beschränken, besteht in der Verwendung eines drehbaren Gegenbalkens Diese drehbaren Gegenbalken sind in der Regel als Walze ausgeformt. Zwischen zwei Trennschweißprozessen wird die Walze gedreht, so dass ein anderer Teil der Walzenoberfläche der Schweißtemperatur und dem Druck des Trennschweißprozesses ausgesetzt wird. Oft werden auch diese drehbaren Gegenbalken von einem Teflonglasgewebe gegen ein Anhaften der verschweißten Folie geschützt. Aufgrund der Drehung des beschriebenen Gegenbalkens reich es oft aus, den Gegenbalken mit dem Teflonglasgewebe zu beschichten.Another method is to limit wear in the use of a rotatable counter beam These are rotatable counter beams usually shaped as a roller. Between two separation welding processes the roller is rotated so that another part of the roller surface of the welding temperature and the pressure of the separation welding process is exposed. Often these rotatable counterbeams are made by a Teflon glass fabric to protect the welded film from sticking. by virtue of the rotation of the counter beam described is often sufficient for the Coating the counter beam with the Teflon glass fabric.

In den letzten Jahren sind alle bereits erwähnten Ausführungsformen von Gegenbalken in dem beschriebenen Anwendungsbereich mit flexiblen Dämpfungskörpern ausgestattet worden, die zumindest einen Teil der dem Schweißbalken zugewandten Oberfläche des Gegenbalkens abdecken.In the past few years everyone has been mentioned embodiments of counter beams in the application area described with flexible Damping bodies equipped that have at least a part of the surface of the welding bar facing the Cover the counter bar.

Hierbei bestehen diese Dämpfungskörper in der Regel aus Silikon, Viton oder einem anderen flexiblen und temperaturbeständigen Material. Diese Materialien verringern zwar den Verschleiß der Balken, verschleißen aber selbst sehr schnell. Durch die Auswechslung dieser Dämpfungskörper oder gar des ganzen Schweißbalkens ergeben sich jedoch unerwünschte Standzeiten der Maschine.Here, these damping body in the Usually made of silicone, Viton or another flexible and temperature-resistant material. These materials reduce the wear of the beams, but they wear out even very quickly. By replacing this damping body or even the whole sweat bar however, undesirable results Machine downtimes.

Es ist Aufgabe der vorliegenden Erfindung, diese Standzeiten zu verringern. Diese Aufgabe wird dadurch gelöst, dass die dem Schweißbalken zugewandte Oberfläche des Dämpfungskörpers aus Metall besteht.It is an object of the present invention Reduce downtimes. This task is solved in that the sweat bar facing surface of the damping body Metal.

Metalle besitzen in der Regel eine höhere Abriebfestigkeit und Temperaturleitfähigkeit als die bisher in den flexiblen Dämpfungskörpern verwendeten Materialien.Metals usually have one higher abrasion resistance and thermal conductivity than the materials previously used in the flexible damping bodies.

Wenn das verwendete Metall biegsam ist, kann zumindest ein Teil der von dem Dämpfungskörper aufzubringenden Rückstellkraft direkt von dem Metall aufgebracht werden. Vorgespannte Federbleche eignen sich in diesem Zusammenhang besonderst gut. Auf der dem Schweißbalken beim Schweißprozess abgewandten Seite können Federelemente angebracht werden. Diese können alleine oder beispielsweise gemeinsam mit einem Federblech die dämpfende Wirkung und die Rückstellkraft aufbringen.If the metal used is pliable is, at least part of the restoring force to be applied by the damping body can be applied directly from the metal. Prestressed spring plates are particularly suitable in this context. On the sweat bar during the welding process opposite side can Spring elements are attached. These can be used alone or for example Apply the damping effect and the restoring force together with a spring plate.

Weitere Ausführungsbeispiele der Erfindung gehen aus der gegenständlichen Beschreibung und den Ansprüchen hervor.Further embodiments of the invention go from the representational Description and claims out.

Die einzelnen Figuren zeigen:The individual figures show:

1 Eine Skizze einer Schweißtrennvorrichung 1 A sketch of a welding separator

2 Einen Schnitt durch einen ersten erfindungsgemäßen Schweißtrennbalken 2 A section through a first welding separating beam according to the invention

3 Einen Schnitt durch einen zweiten erfindungsgemäßen Schweißtrennbalken 3 A section through a second welding separating beam according to the invention

4 Einen Schnitt durch einen dritten erfindungsgemäßen Schweißtrennbalken 4 A section through a third welding separating beam according to the invention

5 Eine Aufsicht auf den dritten erfindungsgemäßen Schweißtrennbalken 5 A supervision of the third welding separation beam according to the invention

1 zeigt eine Skizze einer Trennnahtschweißvorrichtung mit einer Schweißstelle 1, welche von einem Schweißbalken 2 und einem Gegenbalken 3 definiert wird. Beide Balken sind lediglich skizziert und ausschnittweise dargestellt. Oft ist neben dem Schweißbalken auch der Gegenbalken beheizt. 1 shows a sketch of a seam welding device with a weld 1 which by a welding bar 2 and a counter bar 3 is defined. Both bars are only sketched and shown in sections. In addition to the welding bar, the counter bar is often also heated.

In der Regel verfügt einer oder gar beide Balken 2, 3 über als Stoßdämpfer wirkende Federvorrichtungen, welche die Balken mit ihren Aufhängungen verbinden und die während des Trennschweißvorganges entstehenden Stöße abdämpfen.Usually one or both bars have 2 . 3 Via spring devices acting as shock absorbers, which connect the beams with their suspensions and dampen the shocks that occur during the separation welding process.

In der Regel ist lediglich der Schweißbalken entlang der durch den Pfeil A skizzierten Richtung beweglich. Es ist jedoch ebenso gut möglich, beide Balken oder nur den Gegenbalken beweglich zu gestalten. Wichtig für die Funktion der Maschine ist lediglich, dass die beiden Balken in der Höhe der Schweiß- Trennstelle eine Relativbewegung beziehungsweise Beschleunigung ausführen, welche die zum Schweißen und Trennen der Folie notwendige Kraft bereitstellt.As a rule, only the welding bar can be moved along the direction outlined by arrow A. However, it is equally possible to make both beams or only the counter beam movable. It is only important for the function of the machine that the two bars execute a relative movement or acceleration at the height of the welding separation point, which is necessary for welding and cutting the film Provides strength.

Darüber hinaus ist der Gegenbalken 3 mit einem flexiblen Dämpfungskörper 4 ausgestattet. Dieser Dämpfungskörper 4 besteht in der Regel aus einem flexiblen, möglichst hitzebeständigen Kunststoff wie Viton oder Silikon, welcher einem Verschleiß unterliegt. Im vorliegenden Beispiel wird eine Anhaftung von Folie 5 an dem Dämpfungskörper 4 verhindert, indem ein Teflonglasgewebe zwischen der Folie und dem Dämpfungskörper hindurchgeführt wird. Dieses Teflonglasgewebe wird von der Teflonglasgeweberolle 10 abgewickelt und der Teflonglasgeweberolle 11 zugeführt. Der Vorschub des Teflonglasgewebes erfolgt intermittierend, wobei das Gewebe nach einem oder mehreren Schweißvorgängen bewegt wird.In addition, the counter bar 3 with a flexible damping body 4 fitted. This damping body 4 usually consists of a flexible, as heat-resistant plastic as possible, such as Viton or silicone, which is subject to wear. In the present example there is an adhesion of foil 5 on the damping body 4 prevented by passing a Teflon glass fabric between the film and the damping body. This Teflon glass fabric is made from the Teflon glass fabric roll 10 unwound and the Teflon glass fabric roll 11 fed. The Teflon glass fabric is fed intermittently, with the fabric being moved after one or more welding processes.

2 zeigt einen Gegenbalken einer erfindungsgemäßen Vorrichtung bei der der flexible Dämpfungskörper 4 lediglich aus einem Federblech 13 mit einer Metalloberfläche 6 besteht. Das Federblech ist bei diesem Ausführungsbeispiel der Erfindung in einer Nut 7 im Gegenbalken vorgespannt. 2 shows a counter bar of a device according to the invention in which the flexible damping body 4 only from a spring plate 13 with a metal surface 6 consists. The spring plate is in this embodiment of the invention in a groove 7 biased in the opposite beam.

3 zeigt ein weiteres Ausführungsbeispiel der Erfindung bei dem wieder in der Nut 7 im Gegenbalken ein flexibles Material 8 einen Großteil des flexiblen Dämpfungskörpers 4 bildet. Der Dämpfungskörper besitzt auch eine Metalloberfläche 6, welch dem hier nicht dargestellten Schweißbalken zugewandt ist. 3 shows a further embodiment of the invention in the back in the groove 7 a flexible material in the opposite beam 8th a large part of the flexible damping body 4 forms. The damping body also has a metal surface 6 , which faces the welding bar, not shown here.

Auf die Darstellung eines Teflonglasgewebes 9 wurde in den 2 und 3 verzichtet, obwohl sich ein solches besonders vorteilhaft mit der Erfindung einsetzen läßt.On the representation of a Teflon glass fabric 9 was in the 2 and 3 dispensed with, although such can be used particularly advantageously with the invention.

Die 4 und 5 zeigen den Gegenbalken eines anderen Ausführungsbeispiels der Erfindung, bei dem der Gegenbalken 3 drehbar gelagert ist. Wie bereits eingangs erwähnt werden diese drehbaren Gegenbalken 3 zwischen zwei Trennschweißprozessen gedreht, so dass ein anderer Teil der Balkenoberfläche der Schweißtemperatur und dem Druck des Trennschweißprozesses ausgesetzt wird. Hier ist der drehbare Gegenbalken 3 als Walze ausgeformt. 4 zeigt einen Schnitt B-B durch eine solche Walze, der zeigt, dass um den drehbaren Balken 3 herum zunächst eine Schicht aus einem flexiblen Material 8 wie Silikon angeordnet worden ist. Auf dieser Schicht befindet sich eine Metallschicht 12 mit einer metallenen Oberfläche 6, welche um den ganzen Umfang des als Walze ausgebildeten Balkens 3 herumreicht. Damit ist diese Schicht auch immer beim Schweißprozess dem nicht dargestellten Schweißbalken zugewandt.The 4 and 5 show the counter bar of another embodiment of the invention, in which the counter bar 3 is rotatably mounted. As already mentioned at the beginning, these rotatable counterbeams 3 rotated between two separation welding processes so that another part of the beam surface is exposed to the welding temperature and the pressure of the separation welding process. Here is the rotating counter bar 3 shaped as a roller. 4 shows a section BB through such a roller, which shows that around the rotatable bar 3 around it first a layer of a flexible material 8th how silicone has been arranged. There is a metal layer on this layer 12 with a metallic surface 6 which around the entire circumference of the bar designed as a roller 3 enfolds. This layer is thus always facing the welding bar (not shown) during the welding process.

In diesem Ausführungsbeispiel ist diese Metalloberfläche 6 mit einem Teflonglasgwebe 9 versehen, welches das Anhaften von Folie 5 am Gegenbalken 2 verhindert. 5 zeigt eine Aufsicht auf einen Teil des in 4 bereits beschriebenen Ausführungsbeispiels. In dieser Ansicht ist lediglich das Teflonglasgewebe 9, das eine Ende des Gegenbalkens 3 und die Lage des Schnitts B-B zu erkennen.In this embodiment, this is metal surface 6 with a Teflon glass fabric 9 provided, which the adherence of foil 5 on the opposite beam 2 prevented. 5 shows a supervision of a part of the in 4 already described embodiment. In this view, only the Teflon glass fabric is 9 , one end of the opposite beam 3 and to recognize the position of the section BB.

11
Schweiß-TrennstelleWelding separation point
22
Schweißbalkenwelding bars
33
Gegenbalkenagainst bar
44
flexibler Dämpfungskörperflexible damping body
55
Folie/FolienschlauchFilm / foil tube
66
metallene Oberfläche des Dämpfungskörpersmetal surface of the damping body
77
Nut im Gegenbalken 3groove in the opposite beam 3
88th
flexibles Materialflexible material
99
TeflonglasgewebeTeflon glass fabric
1010
TeflonglasgeweberolleTeflon glass fabric roll
1111
TeflonglasgeweberolleTeflon glass fabric roll
1212
Metallschichtmetal layer
1313
biegsames Blechpliable sheet
AA
Pfeil in Bewegungsrichtung des Schweißbalkensarrow in the direction of movement of the welding bar
BB
Schnittpunkteintersections

Claims (11)

Vorrichtung zum gleichzeitigen Trennen und Schweißen von Folien oder Folienschläuchen (5), – welche zumindest einen Schweißbalken (2) und einen Gegenbalken (3) enthält, – wobei zumindest ein Teil der dem Schweißbalken (2) zugewandten Oberfläche des Gegenbalkens (3) einen flexiblen Dämpfungskörper (4) aufweist, dadurch gekennzeichnet, dass die dem Schweißbalken zugewandte Oberfläche des Dämpfungskörpers (6) aus Metall besteht.Device for the simultaneous cutting and welding of foils or foil tubes ( 5 ), - which have at least one welding bar ( 2 ) and a counter bar ( 3 ) contains - - at least a part of the welding beam ( 2 ) facing surface of the counter beam ( 3 ) a flexible damping body ( 4 ), characterized in that the surface of the damping body facing the welding bar ( 6 ) is made of metal. Vorrichtung nach Anspruch 1 dadurch gekennzeichnet, dass die dem Schweißbalken (2) zugewandte Oberfläche des Dämpfungskörpers (6) aus einem biegsamen Metall wie Federblech besteht.Device according to claim 1, characterized in that the welding bar ( 2 ) facing surface of the damping body ( 6 ) consists of a flexible metal such as spring plate. Vorrichtung nach Anspruch 2 dadurch gekennzeichnet, dass das biegsame Blech (13) während des Schweißtrennvorganges verformt wird.Device according to claim 2, characterized in that the flexible sheet ( 13 ) is deformed during the welding process. Vorrichtung nach Anspruch 2 oder 3 dadurch gekennzeichnet, dass das biegsame Blech (13) bereits vor dem Schweißtrennvorgang vorgespannt ist.Device according to claim 2 or 3, characterized in that the flexible sheet ( 13 ) is pre-stressed before the welding process. Vorrichtung nach einem der vorstehenden Ansprüche dadurch gekennzeichnet, dass flexible Dämpfungskörper (4) auf der dem Schweißbalken abgewandten Seite über ein zusätzliches Federelement (8) verfügt.Device according to one of the preceding claims, characterized in that flexible damping body ( 4 ) on the side facing away from the welding beam via an additional spring element ( 8th ) has. Vorrichtung nach Anspruch 5 dadurch gekennzeichnet, dass das Federelement (8) aus einem elastischen Kunststoff wie Silikon oder Viton besteht.Device according to claim 5, characterized in that the spring element ( 8th ) consists of an elastic plastic such as silicone or Viton. Vorrichtung nach Anspruch 6 dadurch gekennzeichnet, dass das flexible Federelement (8) bandförmig ausgeprägt ist.Apparatus according to claim 6, characterized in that the flexible spring element ( 8th ) is shaped like a band. Vorrichtung nach Anspruch 7 dadurch gekennzeichnet dass das bandförmig ausgeprägte Federelement (8) und die dem Schweißbalken (2) zugewandte metallene Oberfläche (6) des Dämpfungskörpers (4) miteinander verbunden sind.Characterized device according to claim 7 shows that the band-shaped spring element ( 8th ) and the welding bar ( 2 ) facing metal surface ( 6 ) of the damping body ( 4 ) are connected. Vorrichtung nach Anspruch 8 dadurch gekennzeichnet dass das bandförmig ausgeprägte Federelement (8) und die dem Schweißbalken (2) zugewandte metallene Oberfläche (6) des Dämpfungskörpers (4) miteinander verklebt sind.Device according to claim 8, characterized in that the band-shaped spring element ( 8th ) and the welding bar ( 2 ) facing metal surface ( 6 ) of the damping body ( 4 ) are glued together. Vorrichtung nach einem der vorstehenden Ansprüche dadurch gekennzeichnet dass zwischen Dämpfungselement (4) und zu verschweißender Folie (5) eine schweißhemmende Schicht (9) aus einem Material wie beispielsweise Teflonglasgewebe (9) angeordnet ist.Device according to one of the preceding claims, characterized in that between the damping element ( 4 ) and foil to be welded ( 5 ) an antiperspirant layer ( 9 ) made of a material such as Teflon glass fabric ( 9 ) is arranged. Verfahren zum gleichzeitigen Trennen und Schweißen von Folien oder Folienschläuchen (5), – bei welchem die Trennschweißung zumindest von einem Schweißbalken (2) und einem Gegenbalken (3) vorgenommen wird, – und zumindest ein Teil der dem Schweißbalken (2) zugewandten Oberfläche (6) des Gegenbalkens (3) mit einem flexiblen Dämpfungskörper (4) ausgestattet ist, dadurch gekennzeichnet, dass die dem Schweißbalken (3) zugewandte Oberfläche des Dämpfungskörpers (4) aus Metall besteht.Process for the simultaneous cutting and welding of foils or foil tubes ( 5 ), - in which the separation welding is carried out by at least one welding bar ( 2 ) and a counter bar ( 3 ) - and at least part of the welding beam ( 2 ) facing surface ( 6 ) of the opposite beam ( 3 ) with a flexible damping body ( 4 ), characterized in that the welding bar ( 3 ) facing surface of the damping body ( 4 ) is made of metal.
DE10231770A 2002-06-10 2002-07-13 Separating seam welding device Expired - Fee Related DE10231770B4 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE10231770A DE10231770B4 (en) 2002-07-13 2002-07-13 Separating seam welding device
DE50313060T DE50313060D1 (en) 2002-06-10 2003-05-08 Trennahtschweissvorrichtung
AT03010347T ATE480389T1 (en) 2002-06-10 2003-05-08 SEPARATION WELDING DEVICE
EP03010347A EP1371475B1 (en) 2002-06-10 2003-05-08 Apparatus for makinq a joint by simultaniously welding and cutting
US10/448,199 US6880742B2 (en) 2002-06-10 2003-05-30 Separating seam welding device

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DE102010036025A1 (en) * 2010-08-31 2012-03-01 Lemo Maschinenbau Gmbh Device for welding foil and bag made therewith

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CH530905A (en) * 1970-11-06 1972-11-30 Flums Ag Maschf Packaging process - using two plastic foils welded together around portions of goods
CH587751A5 (en) * 1975-01-27 1977-05-13 Sig Schweiz Industrieges
DE3920867A1 (en) * 1988-07-22 1990-01-25 Fmc Corp DEVICE FOR HEAT-SEALING AND SEPARATING THERMOPLASTIC MATERIALS
DE9005376U1 (en) * 1990-05-11 1990-07-26 Hugo Beck Maschinenbau GmbH & Co. KG, 72581 Dettingen Separating and sealing device for multi-layer packaging films
EP0888876B1 (en) * 1997-07-03 2002-01-16 LEMO Maschinenbau GmbH Machine for delivering and stacking bags, fabricated from a thermoplastic web

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DE583625C (en) * 1932-10-19 1933-09-06 Johne Werk Grafische Maschinen Spring-loaded cutting mat for machines for cutting paper, cardboard, etc. like

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH530905A (en) * 1970-11-06 1972-11-30 Flums Ag Maschf Packaging process - using two plastic foils welded together around portions of goods
CH587751A5 (en) * 1975-01-27 1977-05-13 Sig Schweiz Industrieges
DE3920867A1 (en) * 1988-07-22 1990-01-25 Fmc Corp DEVICE FOR HEAT-SEALING AND SEPARATING THERMOPLASTIC MATERIALS
DE9005376U1 (en) * 1990-05-11 1990-07-26 Hugo Beck Maschinenbau GmbH & Co. KG, 72581 Dettingen Separating and sealing device for multi-layer packaging films
EP0888876B1 (en) * 1997-07-03 2002-01-16 LEMO Maschinenbau GmbH Machine for delivering and stacking bags, fabricated from a thermoplastic web

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010036025A1 (en) * 2010-08-31 2012-03-01 Lemo Maschinenbau Gmbh Device for welding foil and bag made therewith

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