DE1604607B2 - DEVICE FOR WELDING THE LAYERS OF THERMOPLASTIC PLASTIC FILMS - Google Patents

DEVICE FOR WELDING THE LAYERS OF THERMOPLASTIC PLASTIC FILMS

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Publication number
DE1604607B2
DE1604607B2 DE19661604607 DE1604607A DE1604607B2 DE 1604607 B2 DE1604607 B2 DE 1604607B2 DE 19661604607 DE19661604607 DE 19661604607 DE 1604607 A DE1604607 A DE 1604607A DE 1604607 B2 DE1604607 B2 DE 1604607B2
Authority
DE
Germany
Prior art keywords
quartz
rod
radiator
slot
rods
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.)
Pending
Application number
DE19661604607
Other languages
German (de)
Other versions
DE1604607A1 (en
Inventor
Michael Lehmacher Hans 5215 Mondorf Lehmacher
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of DE1604607A1 publication Critical patent/DE1604607A1/en
Publication of DE1604607B2 publication Critical patent/DE1604607B2/en
Pending legal-status Critical Current

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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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/348—Avoiding melting or weakening of the zone directly next to the joint area, e.g. by cooling
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1445—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface heating both sides of the joint
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1464—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface making use of several radiators
    • B29C65/1467—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface making use of several radiators at the same time, i.e. simultaneous welding
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1496—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation making use of masks
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—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 mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • 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
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B29C66/81815—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the clamps
    • 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
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • 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
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B29C66/83513—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums cooperating jaws mounted on rollers, cylinders or drums and moving in a closed path

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Verschweißen der Lagen von thermoplastischen Kunststoffolien mit einem elektrischen Wärmestrahler, vorzugsweise in Gestalt eines elektrischen Widerstandsdrahtes in einem Quarzrohr, angeordnet in einem Stab, der an seiner den zu verschweißenden Folien gerichteten Seite einen sich über die Länge des Strahlers erstreckenden Schlitz aufweist, durch dessen Breite die Breite der Schweißnaht bestimmt ist und an seiner der zu verschweißenden Folie weggerichteten Seite ebenfalls offen ist.The invention relates to a device for welding the layers of thermoplastic plastic films with an electric heat radiator, preferably in the form of an electric resistance wire in a quartz tube, arranged in a Rod that extends over the length of the radiator on its side facing the foils to be welded having extending slot, the width of which determines the width of the weld seam and is also open on its side facing away from the film to be welded.

Bei der bekannten Vorrichtung der vorbeschriebenen Art erfolgt die Erhitzung durch einen Glühdraht, der seine Strahlen in radialer Richtung aussendet und dadurch durch Strahlung auch das Aufnahmegehäuse erhitzt. Die Erhitzung des Aufnahmegehäuses und die von dem Aufnahmegehäuse in unkontrollierbare Richtungen abgelenkte Hitzestrahlung kann zu einer unerwünschten Vorwärmung der Folie dienen. Bei der bekannten Lösung geht die nach außen von der Folie weggerichtete Hitze für die Verschweißung der Folie verloren und führt auch zu einer unerwünschten Erhitzung angrenzender Bauteile.In the known device of the type described above, the heating is carried out by a glow wire, which emits its rays in a radial direction and thereby also the receiving housing through radiation heated. The heating of the receiving housing and that of the receiving housing in uncontrollable Heat radiation deflected in directions can serve to undesirably preheat the film. at the known solution is the outwardly directed away from the film heat for the welding of the Foil is lost and also leads to undesired heating of adjacent components.

Die vorliegende Erfindung geht von der Aufgabe aus, die vorhandene Hitzestrahlung unter weitgehend der Vermeidung der Erhitzung des Aufnahmegehäuses voll auszunutzen und die Güte der Schweißnähte zu verbessern. Zur Lösung dieser Aufgabe wird bei einer Vorrichtung zum Verschweißen der Lagen von thermoplastischen Kunststoffolien mit einem elektrischen Wärmestrahler, vorzugsweise in Gestalt eines elektrischen Widerstandsdrahtes in einem Quarzrohr, angeordnet in einem Stab, der an seiner den zu verschweißenden Folien gerichteten Seite einen sich über die Länge des Strahlers erstreckenden Schlitz aufweist, durch dessen Breite die Breite der Schweißnaht bestimmt ist und an seiner der zu verschweißenden Folie weggerichteten. Seite ebenfalls offen ist, erfindungsgemäß vorgeschlagen, daß die Mantelfläche des Quarzrohres, die der zu verschweißenden Folie abgekehrt ist, mit einer Reflektionsschicht abgedeckt ist. Durch diesen Vorschlag wird erreicht, daß die Hitzestrahlen in Richtung zu dem offenen Ende des Stabes als Aufnahmegehäuse, das den zu verarbeitenden Folien zugekehrt ist, gebündelt werden und dadurch ihre Intensität erhöht wird. Zugleich wird erreicht, daß die Hitzestrahlen durch ihre Bündelung nicht zu den Wandungen des Gehäuses gelangen und auch nicht durch die Öffnung, die der Folie weggerichtet ist, nach außen gelangen. Die Bündelung der Strahlen durch die reflektierende Abdeckung ergibt auch eine Begrenzung der einwirkenden Hitzestrahlen auf die zu verarbeitende Folie, so daß. die Schweißnähte mit ausgeprägter Seitenbegrenzung erhalten werden.The present invention is based on the task of reducing the existing heat radiation to a large extent the avoidance of heating of the housing and the quality of the welds to improve. To solve this problem, in a device for welding the layers of thermoplastic plastic films with an electric heat radiator, preferably in the form of a electrical resistance wire in a quartz tube, arranged in a rod, which is to be welded at its Foil-facing side has a slot extending over the length of the radiator has, by the width of which the width of the weld seam is determined and on its to be welded Slide facing away. Side is also open, proposed according to the invention that the lateral surface of the quartz tube, which faces away from the film to be welded, is covered with a reflective layer is. By this proposal it is achieved that the heat rays in the direction of the open end of the Rod as a housing, which faces the foils to be processed, are bundled and thereby their intensity is increased. At the same time it is achieved that the heat rays through their bundling do not get to the walls of the housing and also not through the opening facing away from the film is to get out. The bundling of the rays by the reflective cover results also a limitation of the heat rays acting on the film to be processed, so that. the Weld seams with pronounced side delimitation can be obtained.

An Stelle der Reflektionsschicht an der Mantelfläche des Quarzrohres kann auch oberhalb des Quarzstrahlers im Stab oder am Stab ein dessen Strahlen zum Schlitz im Stab weisender Reflektor vorhanden sein.Instead of the reflective layer on the outer surface of the quartz tube, above the Quartz radiator in the rod or on the rod a reflector pointing its rays towards the slot in the rod to be available.

Zur Kühlung des Stabes durch Wasserkühlung kann der Stab Kühlkanäle aufweisen, die mit diesem einstückig sind. Dies läßt sich erreichen durch Stranggießen der Stäbe oder bei gegossenen Stäben durch entsprechendes Einlegen von Kernen in die Gießform. Besonders vorteilhaft wird in weiterer erfindungsgemäßer Ausgestaltung zur Kühlung des Stabes vorgeschlagen, daß der Stab an seinen längsverlaufenden Seiten im Querschnitt halbkreisförmige Rinnen aufweist, in denen jeweils zugeordnete Kühlleitungsrohre angebracht sind.To cool the rod by water cooling, the rod can have cooling channels that are connected to it are in one piece. This can be achieved by continuously casting the rods or with cast rods by inserting cores into the Casting mold. In a further embodiment according to the invention, it is particularly advantageous to cool the rod suggested that the rod on its longitudinal sides semicircular in cross section Has grooves, in each of which associated cooling line tubes are attached.

In weiterer erfindungsgemäßer Ausgestaltung wird vorgeschlagen, daß ein Stab mit Quarzstrahler in einer rotierenden Trommel angeordnet ist, wobei die Trommel in ihrer Mantelfläche einen sich in axialer Richtung erstreckenden Schlitz zum Durchlaß der Hitzestrahlen aufweist. Diese Lösung ist vorgesehen zum Herstellen von Schweißnähten, die sich quer zur Bewegungsrichtung der Folie bei ihrer Verarbeitung erstrecken.In a further embodiment of the invention it is proposed that a rod with quartz radiator in a rotating drum is arranged, the drum in its lateral surface in an axial Direction extending slot for the passage of the heat rays. This solution is envisaged for producing weld seams that are perpendicular to the direction of movement of the film during processing extend.

Nach einem weiteren erfindungsgemäßen Merkmal wird zum Herstellen von Querschweißungen vorgeschlagen, daß der Stab mit dem Quarzstrahler, vor-According to a further inventive feature, it is proposed to produce transverse welds, that the rod with the quartz radiator,

zugsweise zwei um 180° versetzte Stäbe mit Quarzstrahlern an einer rotierenden Welle angeordnet ist und eine zweite Welle mit federnd gelagerten, mit Quarzstrahlern versehenen Stäben vorhanden ist, wobei bei der Rotation der den verschiedenen Wellen zugeordneten Stäbe diese auf einem Teil ihrer Umfangsbewegung einander anliegen. Durch diesen Vorschlag wird in gleicher Weise wie bei Anwendung der Stäbe mit Quarzstrahler in einer Trommel die Anbringung von Quarzschweißungen bei kontinuierlich bewegten Folienbahnen ermöglicht.preferably two rods with quartz radiators offset by 180 ° is arranged on a rotating shaft and a second shaft with spring-loaded, with Quartz radiators provided rods is present, with the rotation of the different waves associated rods these rest against one another on part of their circumferential movement. By this suggestion is attached in the same way as when using the rods with quartz radiators in a drum of quartz welds in continuously moving film webs.

Die Erfindung ist in den Zeichnungen an Hand einiger Ausführungsbeispiele näher erläutert. Sie beschränkt sich nicht auf die dargestellten Ausbildungsformen, vielmehr sind weitere, im Rahmen der Erfindung liegende Abwandlungen möglich. Es zeigtThe invention is explained in more detail in the drawings using a few exemplary embodiments. You limited does not refer to the forms of training shown, but rather are more, within the framework of the Invention lying modifications possible. It shows

F i g. 1 eine erfindungsgemäße Vorrichtung in perspektivischer Darstellung,F i g. 1 shows a device according to the invention in a perspective view,

F i g. 2 einen vertikalen Schnitt durch eine abgewandelte erfindungsgemäße Vorrichtung,F i g. 2 shows a vertical section through a modified device according to the invention,

F i g. 3 einen vertikalen Schnitt durch eine weitere Abwandlung,F i g. 3 shows a vertical section through another Modification,

F i g. 4 einen vertikalen Schnitt durch eine weitere Abwandlung,F i g. 4 a vertical section through a further modification,

F i g. 5 einen vertikalen Schnitt durch eine weitere; Abwandlung,F i g. 5 shows a vertical section through another; Modification,

F i g. 6 in perspektivischer Darstellung die Anwendung der erfindungsgemäßen Lösung bei einer rotierenden Schweißtrommel,F i g. 6 shows in perspective the application of the solution according to the invention in a rotating Welding drum,

Fig.7 eine weitere Abwandlung der erfindungsgemäßen Wärmestrahler in Stirnansicht.7 shows a further modification of the invention Radiant heater in front view.

F i g. 1 zeigt die erfindungsgemäße Vorrichtung zur Verschweißung der Lagen 10 und 11 aus thermoplastischer Kunststoffolie. Vorhanden ist der Stab 12, der vorzugsweise einstückig innen hohl ist zur Aufnahme eines Quarzstrahlers 13, bestehend aus einem Quarzrohr 14 mit einem in dessen Inneren angeordneten Widerstandsdraht 15. Der Stab 12 hat zur Aufnahme des Quarzstrahlers 13 einen ausreichenden Innenraum, so daß zwischen Außenwandung des Quarzstrahlers und Innenwandung des Stabes ein ausreichend bemessener Abstand vorhanden ist.F i g. 1 shows the device according to the invention for welding the layers 10 and 11 made of thermoplastic material Plastic film. There is the rod 12, which is preferably integrally hollow on the inside for Receiving a quartz radiator 13, consisting of a quartz tube 14 with a arranged in its interior Resistance wire 15. The rod 12 has a sufficient one to accommodate the quartz radiator 13 Interior space, so that between the outer wall of the quartz heater and the inner wall of the rod there is a sufficient distance.

Der Quarzstrahler hat an seiner oberen Mantelfläche, die den miteinander zu verschweißenden Folienlagen 10 und 11 weggerichtet ist, eine Reflektionsschicht in Gestalt einer Goldauflage 16. Der Stab 12 weist an seiner den Folienlagen 10 und 11 zugerichteten· Seite einen sich über die Länge des Quarzstrahlers erstreckenden Schlitz 17 auf, dessen Breite die Schweißnaht bestimmt. Ein breiter Schlitz ergibt eine breite Schweißnaht, ein schmaler Schlitz ergibt eine schmale Schweißnaht.The quartz heater has on its upper lateral surface the film layers to be welded together 10 and 11 is directed away, a reflective layer in the form of a gold plating 16. Der On its side facing the film layers 10 and 11, the rod 12 has a length that extends over the length of the Quartz radiator extending slot 17, the width of which determines the weld seam. A wide slit results in a wide weld, a narrow slot results in a narrow weld.

Der Stab 12 ist Wassergekühlt und weist zu beiden Seiten des Quarzstrahlers Kühlkanäle 18 auf. Der Stab 12 ist oben offen, um durch diese Öffnung 19 zur Kühlung beizutragen. In vielen Fällen kann die Anordnung nur eines Stabes 12 mit Quarzstrahler zur Schweißung von zwei Lagen ausreichend sein. Besonders vorteilhaft sind jedoch zwei gegenüberliegende Stäbe mit Quarzstrahlern angeordnet, zwischen denen die zu verschweißenden Folienlagen durchgeführt werden, wie das in F i g. 1 dargestellt ist. Die den Folienlagen zugerichteten Flächen der Stäbe können in einem geringen Abstand zu den Außenflächen der Folienlagen 10, 11 vorhanden sein. Sie können aber auch an den Außenflächen der Folienlagen anliegen.The rod 12 is water-cooled and has cooling channels 18 on both sides of the quartz radiator. Of the Rod 12 is open at the top in order to contribute to cooling through this opening 19. In many cases, the Arrangement of only one rod 12 with quartz radiator for welding two layers will be sufficient. However, two opposing rods with quartz radiators are particularly advantageously arranged between which the film layers to be welded are carried out, as shown in FIG. 1 shown is. The surfaces of the rods that are trimmed to the film layers can be at a small distance from the Outer surfaces of the film layers 10, 11 may be present. But you can also on the outer surfaces of the Foil layers are in contact.

Aus F i g. 1 ist ersichtlich, daß die Vorrichtung anwendbar ist bei Folienlagen, die in Achsrichtung der Stäbe 12 bewegt werden und somit eine Längsschweißung ergeben, aber auch bei Folienlagen, die in angegebener Pfeilrichtung 20 quer zur Längserstreckung der Stäbe 12 bewegt werden, so daß Querschweißnähte 21 erhalten werden.From Fig. 1 it can be seen that the device is applicable to film layers that are in the axial direction of the Rods 12 are moved and thus result in a longitudinal weld, but also in the case of film layers that are moved in the indicated arrow direction 20 transversely to the longitudinal extension of the rods 12, so that transverse welds 21 can be obtained.

Die F i g. 2 bis 4 zeigen verschiedene Abwandlungen. Der Stab 12 wird wassergekühlt durch zwei anThe F i g. 2 to 4 show various modifications. The rod 12 is water cooled by two

ίο den Längsseiten angebrachte, in halbkreisförmige Rinnen eingelegte Kühlleitungen 22. Auch bei dieser Ausbildung ist der Stab 12 oben offen. Die Breite 17 des Schlitzes an der Stabseite, die den zu verschweißenden Folienlagen zugerichtet ist, bemißt auch hier die Breite der Schweißnaht.ίο attached to the long sides, in semicircular Cooling lines 22 inserted into channels. In this embodiment too, the rod 12 is open at the top. The width 17 of the slot on the rod side, which is trimmed to the foil layers to be welded, is dimensioned here as well the width of the weld.

F i g. 3 zeigt die Ausbildung nach F i g. 2 mit der Abwandlung, daß zwei nebeneinanderliegende Schlitze 17 vorhanden sind. Erreicht wird dies durch eine längsverlaufende Leiste 22 a, die einen breiten Schlitz unterteilt. Diese Leiste 22 a besteht vorteilhaft entweder aus einem sehr hochtemperaturbeständigen· Werkstoff, oder aber sie ist wassergekühlt.F i g. 3 shows the training according to FIG. 2 with the modification that two adjacent Slots 17 are present. This is achieved by a longitudinal bar 22 a, which has a wide Divided into slot. This bar 22 a advantageously consists either of a very high temperature resistant Material, or it is water-cooled.

F i g. 4 zeigt die Anordnung von zwei übereinanderliegenden Quarzstrahlern, wobei ein 8-förmiges einstückiges Quarzrohr vorhanden ist und jedem Rohr zugeordnet Widerstandsdrähte 15 zugeordnet sind. Oberhalb des doppelten Quarzstrahlers ist ein sich über die Länge der Quarzstrahler erstreckender halbkreisförmig gebogener Reflektor 23 vorhanden.F i g. 4 shows the arrangement of two superimposed Quartz radiators, where there is an 8-shaped one-piece quartz tube and each Resistance wires 15 assigned to tube are assigned. Above the double quartz heater is a Semicircularly curved reflector 23 extending over the length of the quartz radiator is present.

Durch die in F i g. 4 dargestellte Ausbildung und Anordnung des doppelten Quarzstrahlers wird erreicht, daß die Strahlung des oberen Quarzstrahlers überlagert und somit eine besonders· intensive Strahlungswirkung erreicht wird, die es möglich macht, entsprechend dicke Folien miteinander zu verschweißen oder aber dünne Folien innerhalb sehr kurzer Zeit.Through the in F i g. 4 illustrated design and arrangement of the double quartz heater is achieved, that the radiation of the upper quartz radiator is superimposed and thus a particularly intense radiation effect is achieved, which makes it possible to weld appropriately thick foils together or thin foils within a very short time.

Bei der Anordnung nach F i g. 5 ist ein doppelter Quarzstrahler fläch liegend angeordnet. Hier sind die obenliegenden Mantelflächen der Quarzrohre mit einer Goldauflage 16 versehen. Vorhanden ist wiederum eine vorteilhaft wassergekühlte Leiste 22 a, die einen breiten Schlitz unterteilt, so daß zwei Schlitze 17 im Stab 12 vorhanden sind, die zu zwei nebeneinander und längsverlaufenden Schweißnähten 21 führen. -In the arrangement according to FIG. 5 a double quartz heater is arranged lying flat. Here are the provided with a gold plating 16 on the upper surface of the quartz tubes. There is again an advantageously water-cooled bar 22 a, which divides a wide slot, so that two There are slots 17 in the rod 12, which form two side-by-side and longitudinally extending weld seams 21 lead. -

F i g. 6 zeigt eine Lösung zur Anbringung von Querschweißungen 21 bei fortlaufend bewegten Folienbahnen. Dazu werden die miteinander zu verschweißenden, in angegebener Pfeilrichtung 24 kontinuierlich bewegten Folien unterhalb der Umlenkrollen 24 und 25 geführt, so daß sie bei ihrer Wandung an einem Teil des Umfangs der Schweißwalze 27 anliegen. Die Mantelfläche 28 der Schweißwalze 27 ist mit einem sich in axialer Richtung erstreckenden Schlitz 29 versehen. Innen ist im nahen Bereich des Schlitzes 29 ein Stab 12 mit einem Quarzstrahler angeordnet. Der Schlitz 17 im Stab 12 kann wegfallen, sofern der Schlitz 29 so bemessen ist, daß seine Schlitzbreite die Breite der Schweißnaht bestimmt.F i g. 6 shows a solution for applying transverse welds 21 in the case of continuously moving film webs. For this purpose, the elements to be welded together in the indicated arrow direction 24 are continuous moving foils guided below the pulleys 24 and 25 so that they are at their wall bear against part of the circumference of the welding roller 27. The jacket surface 28 of the welding roller 27 is provided with a slot 29 extending in the axial direction. Inside is in the near area of the slot 29, a rod 12 with a quartz radiator is arranged. The slot 17 in the rod 12 can be omitted, provided that the slot 29 is dimensioned so that its slot width determines the width of the weld seam.

Es ist auch möglich, den Schlitz 29 größer zu bemessen und als wirksame Schlitzbreite den vorbeschriebenen Schlitz 17 am Stab 12 zu wählen.It is also possible to dimension the slot 29 larger and to choose the previously described slot 17 on the rod 12 as the effective slot width.

Fig. 7 zeigt, daß jeweils um 180° zueinander versetzte Stäbe 12 mit Quarzstrahlem und Öffnungsschlitzen 17, die die Breite der Schweißnaht bestimmen, angeordnet sind an zugeordneten Wellen 30 und 31. Die Welle 30 rotiert in angegebener Pfeilrichtung 32 und die Welle 31 in angegebener Pfeil-Fig. 7 shows that each offset by 180 ° to each other Rods 12 with quartz beams and opening slots 17, which determine the width of the weld seam, are arranged on associated shafts 30 and 31. The shaft 30 rotates in the indicated arrow direction 32 and the shaft 31 in the indicated arrow

richtung 33. Die Stäbe 12 führen die durch die angegebenen Kreise 34 und 35 dargestellten Umfangsbewegungen aus. Die Wellen 30 und 31 rotieren synchron. Dadurch erfolgt jeweils bei einer Umdrehung von 180° eine Anlage der Stäbe 12, die den Wellen 30 und 31 zugeordnet sind und durch diese eine Verschweißung der zwischengelegten, in angegebener Pfeilrichtung bewegten Folien. Um eine Anlage der Stäbe 12 nicht nur im Scheitelpunkt zu erreichen, sondern auf einem Kreissektor, überschneiden sich die Kreisbewegungen 33 und 34. Um dies zu ermögliehen, sind die an der Welle 31 angebrachten Stäbe 12 auf zugeordneten Federn 37 gelagert, so daß sie bei der Anlage nach unten ausweichen.direction 33. The rods 12 lead through the specified Circles 34 and 35 shown circumferential movements. The shafts 30 and 31 rotate synchronously. As a result, the rods 12, which form the shafts, come into contact with each rotation of 180 ° 30 and 31 are assigned and through this a welding of the intermediate, indicated in Direction of arrow moving foils. In order to achieve an abutment of the bars 12 not only at the apex, but on a circular sector, the circular movements 33 and 34 overlap. To make this possible, the attached to the shaft 31 rods 12 are mounted on associated springs 37 so that they move downwards at the system.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (6)

Patentansprüche:Patent claims: 1. Vorrichtung zum Verschweißen der Lagen von thermoplastischen Kunststoffolien mit einem elektrischen Wärmestrahler, vorzugsweise in Gestalt eines elektrischen Widerstandsdrahtes in einem Quarzrohr, angeordnet in einem Stab, der an seiner den zu verschweißenden Folien gerichteten Seite einen sich über die Länge des Strahlers erstreckenden Schlitz aufweist, durch dessen Breite die Breite der Schweißnaht bestimmt ist und an seiner der zu verschweißenden Folie weggerichteten Seite ebenfalls offen ist, dadurch gekennzeichnet, daß die Mantelfläche des Quarzrohres, die der zu verschweißenden Folie abgekehrt ist, mit einer Reflektionsschicht abgedeckt ist.1. Device for welding the layers of thermoplastic plastic films with a electric heat radiator, preferably in the form of an electric resistance wire in a quartz tube, arranged in a rod, which is directed towards the foils to be welded Side has a slot extending over the length of the radiator, through which Width the width of the weld seam is determined and directed away from the film to be welded Page is also open, characterized in that the lateral surface of the Quartz tube, facing away from the film to be welded, covered with a reflective layer is. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Stab (12) an seinen längsverlaufenden Seiten im Querschnitt halbkreisförmige Rinnen aufweist, in denen jeweils zugeordnete Kühlleitungsrohre (22) angebracht sind.2. Apparatus according to claim 1, characterized in that the rod (12) at its longitudinally extending Has sides in cross-section semicircular grooves, in which each associated Cooling line tubes (22) are attached. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß ein Stab (12) mit Quarzstrahler (13) in einer rotierenden Trommel (27) angeordnet ist, wobei die Trommel in. ihrer Mantelfläche einen sich in axialer Richtung erstrekkenden Schlitze (29) zum Durchlaß der Hitzestrahlen aufweist.3. Apparatus according to claim 1, characterized in that a rod (12) with a quartz radiator (13) is arranged in a rotating drum (27), the drum in. Its outer surface a slot (29) extending in the axial direction for the passage of the heat rays having. 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der Schlitz (29) in der Trommelwandung die Breite der Schweißnaht (21) bestimmt. 4. Apparatus according to claim 3, characterized in that the slot (29) in the drum wall the width of the weld seam (21) is determined. 5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Stab (12) mit dem Quarzstrahler, vorzugsweise zwei um 180° versetzte Stäbe (12) mit Quarzstrahlern1, an einer rotierenden Welle (30) angeordnet ist und eine zweite Welle (31) mit federnd gelagerten, mit Quarz-Strahlern versehenen Stäben (12) vorhanden ist, wobei bei der Rotation der den verschiedenen Wellen (30, 31) zugeordneten Stäbe (12) diese auf einem Teil ihrer Umfangsbewegung einander anliegen.5. The device according to claim 1, characterized in that the rod (12) with the quartz radiator, preferably two rods (12) offset by 180 ° with quartz radiators 1 , is arranged on a rotating shaft (30) and a second shaft (31) with resiliently mounted rods (12) provided with quartz radiators, with the rotation of the rods (12) assigned to the various shafts (30, 31), these resting against one another over part of their circumferential movement. 6. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Reflektionsschicht (16) aus einer Goldauflage besteht.6. Apparatus according to claim 1, characterized in that the reflective layer (16) consists of a gold plating.
DE19661604607 1966-10-10 1966-10-10 DEVICE FOR WELDING THE LAYERS OF THERMOPLASTIC PLASTIC FILMS Pending DE1604607B2 (en)

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DE3606204A1 (en) * 1985-04-10 1986-10-16 Windmöller & Hölscher, 4540 Lengerich DEVICE FOR CONTINUOUSLY WELDING MULTI-LAYER FILM LINES
US4858416A (en) * 1987-08-04 1989-08-22 Siempelkamp Corporation Tensionless seal apparatus and method
EP0335951A1 (en) * 1987-10-19 1989-10-11 Vinidex Tubemakers Pty. Ltd. Thermoplastics welding arrangement
JP2000219214A (en) * 1999-01-29 2000-08-08 Sig Pack Syst Ag Film sealing device for sealing fusibly packaging film particularly in packaging device
DE19957042C2 (en) * 1999-11-26 2002-05-16 Heraeus Noblelight Gmbh Device for heating thermoplastic parts and method for forming

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