DE1185320B - Device for continuous heating of progressively moving electrically non-conductive materials, in particular for the purpose of welding - Google Patents
Device for continuous heating of progressively moving electrically non-conductive materials, in particular for the purpose of weldingInfo
- Publication number
- DE1185320B DE1185320B DEP21288A DEP0021288A DE1185320B DE 1185320 B DE1185320 B DE 1185320B DE P21288 A DEP21288 A DE P21288A DE P0021288 A DEP0021288 A DE P0021288A DE 1185320 B DE1185320 B DE 1185320B
- Authority
- DE
- Germany
- Prior art keywords
- inner conductor
- welding
- coaxial line
- conductor
- gap
- 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
Links
Classifications
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- 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
- B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
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- 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
- B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
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- 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
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- 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
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- 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
- B29C66/72—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 structure of the material of the parts to be joined
- B29C66/729—Textile or other fibrous material made from plastics
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- 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
- B29C66/81421—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 convex or concave
- B29C66/81422—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 convex or concave being convex
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- 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
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- 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
- B29C66/87—Auxiliary operations or devices
- B29C66/874—Safety measures or devices
- B29C66/8742—Safety measures or devices for operators
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/46—Dielectric heating
- H05B6/62—Apparatus for specific applications
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- 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
- B29C66/71—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 composition of the plastics material of the parts to be joined
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- 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
- B29C66/8187—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 electrical insulating constructional aspects
- B29C66/81871—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 electrical insulating constructional aspects of the welding jaws
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- 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
- B29C66/822—Transmission mechanisms
- B29C66/8223—Worm or spindle mechanisms
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- 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
- B29C66/83417—Roller, cylinder or drum types said rollers, cylinders or drums being hollow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2313/00—Use of textile products or fabrics as reinforcement
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
Vorrichtung zur kontinuierlichen Erwärmung fortschreitend bewegter elektrisch nichtleitender Stoffe, insbesondere zum Zwecke der Verschweißung Die Erfindung betrifft eine Vorrichtung zur kontinuierlichen Erwärmung fortschreitend bewegter elektrisch nichtleitender Stoffe, insbesondere zum Zwecke der Verschweißung, unter Anwendung an der Schweißstelle konzentrierter elektrischer Felder hoher und höchster Frequenzen.Continuous heating device progressively moving electrically non-conductive materials, especially for the purpose of welding The invention relates to a device for continuous heating progressively moving electrically non-conductive materials, in particular for the purpose of welding, using concentrated electric fields of high and highest frequencies.
Die Elektroden, die zur Erhitzung des Gutes durch ein elektrisches Feld sowie gegebenenfalls zur Ausübung des zur Verschweißung notwendigen Druckes dienen, werden entweder als Stempelelektroden mit einer axialen Bewegung oder in Form von Rollen mit rotierender Bewegung ausgeführt. Die Hochfrequenzenergie wird über einfache Kabelleitungen zugeführt, die an die Elektroden und Gegenelektroden gegebenenfalls über Erde angeschlossen werden. Solche Anordnungen können ohne besondere Schwierigkeiten auf der Hochfrequenzseite verwendet werden, solange dieArbeitsfrequenzen in einem Bereich liegen, für den die Abmessungen des Elektrodensystems und der Antriebsorgane klein gegenüber der Wellenlänge sind, so daß die elektrischen Vorgänge innerhalb der Schweißanordnung als quasistationär betrachtet werden können. The electrodes that are used to heat the goods by an electric Field and, if necessary, to exert the pressure required for welding are used either as punch electrodes with an axial movement or in Executed in the form of rollers with rotating motion. The high frequency energy will fed via simple cable lines that connect to the electrodes and counter electrodes may be connected via earth. Such arrangements can be made without special Difficulties on the high frequency side can be used as long as the working frequencies lie in a range for which the dimensions of the electrode system and the drive elements are small compared to the wavelength, so that the electrical processes within the welding arrangement can be regarded as quasi-stationary.
Für Stoffe mit relativ großem Verlustfaktor und nicht zu hoher Schweißtemperatur liegt die für eine Verschweißung oder Verformung erforderliche Frequenz in dem genannten Bereich, so daß die bekannten Anordnungen brauchbar sind. For materials with a relatively large loss factor and a welding temperature that is not too high the frequency required for welding or deformation lies in the stated Area so that the known arrangements are useful.
Stoffe mit kleinem Verlustfaktor, insbesondere Gewebe aus thermoplastischen Chemiefasern oder auch Mischgewebe und Stoffe mit relativ hoher Schweißtemperatur, können dagegen mit Arbeitsfrequenzen bis zu 60 MHz nicht mehr einwandfrei verschweißt werden, da die erzielbare Erwärmung der Stoffe und Gewebe für eine Verschweißung nicht ausreicht. Fabrics with a low loss factor, especially thermoplastic fabrics Man-made fibers or mixed fabrics and fabrics with a relatively high welding temperature, on the other hand, can no longer be welded properly with working frequencies of up to 60 MHz as the heat that can be achieved for the fabrics and tissues for welding not enough.
Zum Verschweißen der genannten Stoffe sind daher hohe und höchste Frequenzen, die im Bereich von etwa 100 bis zu einigen 1000 MHz liegen, erforderlich. Diese Frequenzen entsprechen Wellenlängen von 3 bis etwa 10 cm. Die bekannten Erwärmungseinrichtungen sind aber für diese Wellenlängen nicht mehr geeignet, da ihre Abmessungen mit den Wellenlängen vergleichbar sind und die Anordnung nicht mehr als quasistationär angesehen werden kann. Die Zuführung der Energie zu der Schweißstelle würde vollkommen unbestimmt sein, und eine zur Verschweißung ausreichende Erwärmung würde nicht zustande kommen. Außerdem würde ein beträchtlicher Teil der Energie durch Strahlung verlorengehen. For welding the substances mentioned are therefore high and highest Frequencies in the range from about 100 to a few 1000 MHz are required. These frequencies correspond to wavelengths from 3 to about 10 cm. The known heating devices but are no longer suitable for these wavelengths, since their dimensions with the Wavelengths are comparable and the arrangement is no longer viewed as quasi-stationary can be. The supply of energy to the weld would be completely indeterminate be, and sufficient heating for welding would not come about. In addition, a considerable part of the energy would be lost through radiation.
Ziel der Erfindung ist eine Vorrichtung der genannten Art, die es ermöglicht, auch Stoffe mit kleinem Verlustfaktor, insbesondere Gewebe aus thermoplastischen Chemiefasern und Stoffe mit relativ hoher Schweißgeschwindigkeit einwandfrei miteinander zu verschweißen. The aim of the invention is a device of the type mentioned, which it enables materials with a low loss factor, especially thermoplastic fabrics Man-made fibers and fabrics with a relatively high welding speed together perfectly to weld.
Weiter soll die Vorrichtung bei den verwendeten hohen Frequenzen geringste Abstrahlungen in den Raum und damit hohe Störfreiheit aufweisen. Furthermore, the device should operate at the high frequencies used have the lowest emissions into the room and thus a high degree of freedom from interference.
Dieses Ziel wird gemäß der Erfindung dadurch gelöst, daß die HF-Energie in an sich bekannter Weise durch ein koaxiales Leitungssystem zugeführt wird, daß durch einen Spalt im Innenleiter zwischen den beiden einander gegenüberstehenden Enden des Innenleiters ein konzentriertes starkes elektrisches Feld zur punkt- oder nahtförmigen Erwärmung oder Verschweißung des Gutes erzeugt wird und daß der Außenleiter im Bereich des Spaltes im Innenleiter mit einem Schlitz oder einer Unterbrechung versehen ist, durch welche das Gut durch das Feld bewegt wird. This object is achieved according to the invention in that the RF energy is supplied in a manner known per se by a coaxial line system that through a gap in the inner conductor between the two opposite one another Ends of the inner conductor a concentrated strong electric field for point or Seam-shaped heating or welding of the goods is generated and that the outer conductor in the area of the gap in the inner conductor with a slot or an interruption is provided, through which the good is moved through the field.
Vorzugsweise trägt der Innenleiter an seinen an den Spalt angrenzenden Enden Elektroden. Diese können als Stempelelektroden ausgebildet sein, von denen wenigstens eine axial hin- und herbeweglich ist. Es ist aber auch möglich, den Innenleiter des koaxialen Leitungssystems an seinen an den Spalt angrenzenden Enden mit Rollenelektroden elektrisch zu verbinden, die vom Außenleiter gehäuseartig umschlossen sind. The inner conductor preferably carries on its adjoining the gap Ends electrodes. These can be designed as stamp electrodes, of which at least one is axially reciprocable. But it is also possible to use the inner conductor of the coaxial line system to its to the gap adjacent To electrically connect ends with roller electrodes, the housing-like from the outer conductor are enclosed.
Mit der Vorrichtung gemäß der Erfindung ist es möglich, weitgehend störstrahlungsfreie Stoffe mit kleinem Verlustfaktor mit relativ hoher Schweißgeschwindigkeit einwandfrei miteinander zu verschweißen. With the device according to the invention it is possible to a large extent Radiation-free materials with a small loss factor and a relatively high welding speed to be flawlessly welded together.
Es ist für die dielektrische möglichst gleichmäßige Erwärmung von ruhenden Körpern größerer Dimensionen (wie Autoreifen u. ä.) bekanntgeworden, diese Körper zwischen Kondensatorbelegungen anzuordnen und diesen,Kondensator in ein konzentrisches Leitungssystem einzubeziehen. Dabei ist eine Belegung mit dem inneren, die andere mit dem Außenleiter verbunden. Ein solches Verfahren ist für eine Erwärmung und Verschweißung kontinuierlich bewegter Stoffe, insbesondere Folie und Gewebe, nicht geeignet. Hier kommt es nicht auf gleicllmäßige Erwärmung eines größeren Körpers an, vielmehr muß die Erwärmung und damit das elektrische Feld punkt- oder nahtförmig konzentriert werden. Ferner muß das Gut zwischen den Elektroden fortbewegt werden. It is for the dielectric heating of as uniform as possible stationary bodies of larger dimensions (such as car tires, etc.) have become known, these To arrange the body between the capacitor assignments and this, capacitor in a concentric Include the management system. One is assigned to the inner, the other connected to the outer conductor. One such method is for heating and Welding of continuously moving materials, especially film and fabric, is not suitable. Here there is no uniform heating of a larger body rather, the heating and thus the electric field must be point-like or seam-like be concentrated. Furthermore, the material must be moved between the electrodes.
Die Erfindung ist in den Zeichnungen in mehreren Ausführungsformen beispielsweise dargestellt. Es zeigt Fig. 1 ein grundsätzliches Schaltbild für ein koaxiales Elektrodensystem, F i g. 2 ein Ausführungsbeispiel eines koaxialen Elektrodensystems mit einer in axialer Richtung auf und ab beweglichen Stempelelektrode und einer festen Gegenelektrode im Schnitt, F i g. 3 ein Ausführungsbeispiel mit Rollenelektroden im Schnitt, F i g. 4 ein weiteres Ausführungsbeispiel einer Einrichtung mit einem koaxialen Elektrodensystem, bei dem das Einstellglied über dem Arbeitstisch auf der Seite der Elektrode liegt, in schematischer Darstellung, und F i g. 5 eine der F i g. 4 ähnliche Ausführung, ebenfalls in schematischer Darstellung. The invention is in the drawings in several embodiments for example shown. It shows Fig. 1 a basic circuit diagram for a coaxial electrode system, FIG. 2 shows an embodiment of a coaxial electrode system with a stamp electrode that can be moved up and down in the axial direction and one fixed counter electrode in section, F i g. 3 shows an embodiment with roller electrodes in section, F i g. 4 shows a further embodiment of a device with a coaxial electrode system in which the adjustment member is located above the work table on the side of the electrode, in a schematic representation, and FIG. 5 one of the F i g. 4 similar design, also in a schematic representation.
In Fig. 1 ist ein im Querschnitt röhrenförmig gedachter Außenleiter mit 1 bezeichnet, während mit 2 ein Innenleiter bezeichnet ist. 3 ist ein Hochfrequenzgenerator, zwischen 4 und 5 liegt die Erwärmungs- bzw. Schweißstelle, die als Kondensator dargestellt ist. Zwischen 6 und 7 befindet sich im Außenleiter 1 ein Schlitz, durch den das Werkstück geführt wird. Mit 8 sind Flansche oder Platten bezeichnet, die den kapazitiven Schluß des Außenleiters 1 an der Schlitzstelle 6, 7 verbessern. 9 ist eine bewegliche Kurzschlußscheibe, durch die die Abstimmung des Systems über die Reaktanzleitung bewirkt wird. Durch richtige Einstellung der Scheibe 9 wird ein Maximum der Spannung an der Erwärmungsstelle erreicht. 1 shows an outer conductor which is imagined to be tubular in cross section denoted by 1, while an inner conductor is denoted by 2. 3 is a high frequency generator, between 4 and 5 is the heating or welding point, which is shown as a capacitor is. Between 6 and 7 there is a slot in the outer conductor 1 through which the Workpiece is guided. With 8 flanges or plates are referred to, the capacitive Improve the end of the outer conductor 1 at the slot 6, 7. 9 is a movable one Short-circuit disk through which the system is tuned via the reactance line is effected. Correct adjustment of the disk 9 results in a maximum of the tension reached at the heating point.
In dem in der Fig. 2 gezeigten Ausführungsbeispiel eines Elektrodensystems ist die obere Elektrode mit A und die Gegenelektrode mit B bezeichnet. Der Außenleiter der oberen Elektrode ist zweiteilig ausgeführt und besteht aus einem Außenleiterteil 10, der mittels eines nicht weiter dargestellten Antriebes in axialer Richtung auf und ab bewegbar ist, und einem rohrförmigen, mit einem Flansch 11 ausgebildeten Außenleiterteil 12. Der Außenleiterteil 10 ist gegen die Wirkung einer Feder 13, die eine zeitliche Verzögerung zwischen dem Aufsetzen des unteren Flansches 11 auf das Werkstück 14 und dem eigentlichen Erwärmungsvorgang bewirkt, verschiebbar auf dem Außenleiterteil 12 geführt. In the exemplary embodiment of an electrode system shown in FIG the top electrode is labeled A and the counter electrode is labeled B. The outer conductor the upper electrode is designed in two parts and consists of an outer conductor part 10, which by means of a drive not shown in the axial direction and is movable from, and a tubular, formed with a flange 11 Outer conductor part 12. The outer conductor part 10 is against the action of a spring 13, there is a time delay between setting up the lower flange 11 causes the workpiece 14 and the actual heating process to be displaceable the outer conductor part 12 out.
Der Innenleiter 15 des konzentrischen Leitungssystems wird durch eine Isolierscheibe 16 im Innern des Außenleiterteiles 10 gehalten. Zu diesem Zweck ist der hohle Innenleiter 15 mit einem Gewinde 17 versehen, in das ein beiderseits mit Gewindeenden 18, 19 abgebildeter Bolzen 20 eingeschraubt ist, auf dem die Isolierscheibel6 sitzt. Auf dem Gewindeende 19 ist eine Führungshülse 21 aufgeschraubt, in der ein Elektrodenhalter 22 mit einer Elektrode 23 gegen die Wirkung einer Feder 24 axial verschiebbar geführt ist. Ein Schlitz 25 in der Führungshülse 21 und ein im Elektrodenhalter 22 eingesetzter und mit beiden Enden in den Schlitz 25 hineinragender Stift 26 dient zur Führung und Hubbegrenzung des Elektrodenhalters 22. Der Anpreßdruck der Elektrode 23 auf das Werkstück 14 kann durch einen die Feder 24 abstützenden Federteller 27, der, mit einem Gewindebolzen 28 ausgebildet, in dem Elektrodenhalter 22 eingeschraubt ist, verändert werden. The inner conductor 15 of the concentric line system is through an insulating disk 16 is held in the interior of the outer conductor part 10. To this end the hollow inner conductor 15 is provided with a thread 17 into which one on both sides with threaded ends 18, 19 shown bolt 20 is screwed, on which the insulating disc6 sits. A guide sleeve 21 is screwed onto the threaded end 19, in which a Electrode holder 22 with an electrode 23 against the action of a spring 24 axially is slidably guided. One slot 25 in the guide sleeve 21 and one in the electrode holder 22 inserted and with both ends protruding into the slot 25 pin 26 is used for guiding and limiting the stroke of the electrode holder 22. The contact pressure of the electrode 23 on the workpiece 14 by a spring 24 supporting the spring plate 27, which, formed with a threaded bolt 28, is screwed into the electrode holder 22 is to be changed.
Der Außenleiter 29 der Gegenelektrode B ist mit einem Arbeitstisch 30 leitend verbunden. Die eigentliche Gegenelektrode31 ist in einer Führungshülse 32 auf einem Gewindebolzen33 in der Höhe einstellbar aufgenommen. Der Gewindebolzen 33 dient zur Verbindung des Innenleiters 34 mit der Führungshülse 32 und zur Befestigung einer zwischen diesen angeordneten Isolierscheibe 35, die in dem Außenleiter 29 angeordnet ist. The outer conductor 29 of the counter electrode B is connected to a work table 30 conductively connected. The actual counter electrode 31 is in a guide sleeve 32 added on a threaded bolt 33 adjustable in height. The threaded bolt 33 is used to connect the inner conductor 34 to the guide sleeve 32 and for fastening an insulating disk 35 arranged between these, which is in the outer conductor 29 is arranged.
Die HF-Spannung wird der Elektrode A über ein koaxiales Kabel von einem HF-Generator (im Schaltschema Fig. 1 mit 3 bezeichnet) zugeführt. The RF voltage is supplied to electrode A via a coaxial cable an HF generator (denoted by 3 in the circuit diagram of FIG. 1).
Die Einstellung der erforderlichen Spannung an der Erwärmungs- bzw. Schweißstelle erfolgt mit Hilfe einer an die Elektrode B im Ausgang 36 angeschlossenen Reaktanzleitung geeigneter Länge.The setting of the required voltage on the heating or The welding point takes place with the aid of one connected to the electrode B in the output 36 Reactance line of suitable length.
Der eigentliche Erwärmungsvorgang wird dadurch ausgelöst, daß der aktive Elektrodenteil 23 bei Abwärtsbewegung des Elektrodensystems A auf das Werkstück 14 gedrückt wird, wonach die HF-Spannung eingeschaltet wird. Der Anpreßdruck der Elektrode 23 auf das Werkstück 14 kann durch Einstellung der Spannung der Feder 27 den Erfordernissen entsprechend verändert werden. The actual heating process is triggered by the fact that the active electrode part 23 during downward movement of the electrode system A onto the workpiece 14 is pressed, after which the HF voltage is switched on. The contact pressure of the Electrode 23 on workpiece 14 can be adjusted by adjusting the tension of the spring 27 can be changed according to requirements.
Als weiteres Beispiel ist in der Fig. 3 die Möglichkeit der konstruktiven Auswertung des Erfindungsgedankens bei Anwendung von Rollenelektroden gezeigt. As a further example in Fig. 3 is the possibility of constructive Evaluation of the inventive concept shown when using roller electrodes.
Zwei Rollenelektroden37, 38 sind auf isolierenden Rollenkörpern 39, 40 aufgebracht, die auf Antriebswellen 41, 42 befestigt sind. Die Zuführung der Hochfrequenzenergie erfolgt über ein nicht dargestelltes Kabel und einen Anschluß 43, während ein Anschluß 44 für die Verbindung zu einem ebenfalls nicht dargestellten Abstimmsystem vorgesehen ist. Die Außenleiter 45, 46 sind zu kapselförmigen, metallischen Gehäusen 47, 48 erweitert, die die Rollenkörper 39, 40 mit den Elektroden 37, 38 bis auf einen schmalen Spalt 49 umschließen. Two roller electrodes 37, 38 are on insulating roller bodies 39, 40 applied, which are attached to drive shafts 41, 42. The feeding of the High-frequency energy takes place via a cable (not shown) and a connector 43, while a connection 44 for connection to a likewise not shown Voting system is provided. The outer conductors 45, 46 are capsule-shaped, metallic Housings 47, 48 expanded, which the roller bodies 39, 40 with the electrodes 37, 38 enclose except for a narrow gap 49.
Durch flächenförmige Ansätze 50, 51 wird der kapazitive Schluß der Außenleiter 45, 46 über den Spalt 49 verbessert. Die Innenleiter 52, 53 sind durch die Laufflächen der Rollenelektroden 37, 38 erweitert.Through sheet-like approaches 50, 51 the capacitive circuit is the Outer conductors 45, 46 over the gap 49 improved. The inner conductors 52, 53 are through the running surfaces of the roller electrodes 37, 38 expanded.
Die Verbindungen der Rollenelektroden 37, 38 mit den Innenleitern 52, 53 und dem Abstimmsystem erfolgen über kapazitive Ankopplungen 54, 55.The connections of the roller electrodes 37, 38 with the inner conductors 52, 53 and the tuning system take place via capacitive couplings 54, 55.
Auf diese Weise wird auch bei der oben beschriebenen Ausführung ein einheitliches und definiertes konzentrisches System gebildet, das nach außen abgeschlossen ist. In this way, a uniform and defined concentric system is formed, which is closed to the outside is.
Die in F i g. 1 gezeigte grundsätzliche Anordnung zur Einstellung der erforderlichen HF-Leistung an der Erwärmungsstelle kann im Zusammenhang mit den bereits beschriebenen Elektroden in verschiedener Weise ausgeführt werden. So ist in F i g. 4 eine in der konstruktiven Ausführung besonders einfache und raumsparende Einrichtung mit einem koaxialen System dargestellt, bei welcher das Einstellglied über dem Arbeitstisch auf der gleichen Seite wie die Elektrode liegt. The in F i g. 1 shown basic arrangement for setting the required RF power at the heating point can be related to the electrodes already described are carried out in different ways. So is in Fig. 4 a particularly simple and space-saving design in terms of its construction Device shown with a coaxial system, in which the adjusting member above the work table on the same side as the electrode.
Mit 65 ist eine geerdete Fläche - eines Arbeitstisches bezeichnet, 66 ist eine innere bewegliche Elektrode. Ein Außenleiter 67 des koaxialen Leitungssystems bildet mit einem zweiten, über den Außenleiter 67 geschobenen, koaxialen Leitungsstück68 von geeignetem Durchmesser und passender Länge eine zweite koaxiale Leitung. Die Einstellung der Hochfrequenzleistung erfolgt durch einen Kurzschlußschieber 69, mit dem der Blindwiderstand verändert werden kann. Mit 70 ist ein Schlitz für die Aufnahme des Werkstückes bezeichnet. With 65 is a grounded surface - a work table, 66 is an inner movable electrode. An outer conductor 67 of the coaxial line system forms with a second coaxial line piece 68 pushed over the outer conductor 67 a second coaxial line of suitable diameter and length. the The high-frequency power is set by means of a short-circuit slide 69, with which the reactance can be changed. At 70 there is a slot for them Recording of the workpiece referred to.
Bei einer weiteren Einrichtung ähnlicher Art (Fig. 5) ist mit 71 der Arbeitstisch, mit 72 die bewegliche Elektrode, mit 73 der Außenleiter und mit 74 der Schlitz für die Einführung des Werkstückes bezeichnet. Der Innenleiter 75 ist auf seinem unteren Teil 76 im Durchmesser verringert, um einen Kurzschlußschieber 77 zur Einstellung des Blindwiderstandes aufzunehmen. Der untere Teil 76 des Innenleiters 75 ist von einem Rohrstück78 koaxial umschlossen, das die Elektrode 72 trägt. In another device of a similar type (FIG. 5), 71 the work table, with 72 the movable electrode, with 73 the outer conductor and with 74 denotes the slot for the introduction of the workpiece. The inner conductor 75 is reduced in diameter on its lower part 76 to form a short-circuit slide 77 to adjust the reactance. The lower part 76 of the inner conductor 75 is coaxially enclosed by a tube piece 78 which carries the electrode 72.
Claims (13)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP21288A DE1185320B (en) | 1958-09-02 | 1958-09-02 | Device for continuous heating of progressively moving electrically non-conductive materials, in particular for the purpose of welding |
GB29015/59A GB931806A (en) | 1958-09-02 | 1959-08-25 | Improvements in and relating to the di-electrical heating of non-conductive materials |
FR804043A FR1234512A (en) | 1958-09-02 | 1959-09-01 | Method and devices for dielectric heating of non-conductive materials, in particular with a view to their welding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP21288A DE1185320B (en) | 1958-09-02 | 1958-09-02 | Device for continuous heating of progressively moving electrically non-conductive materials, in particular for the purpose of welding |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1185320B true DE1185320B (en) | 1965-01-14 |
Family
ID=7368183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP21288A Pending DE1185320B (en) | 1958-09-02 | 1958-09-02 | Device for continuous heating of progressively moving electrically non-conductive materials, in particular for the purpose of welding |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1185320B (en) |
FR (1) | FR1234512A (en) |
GB (1) | GB931806A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993004833A2 (en) * | 1991-08-30 | 1993-03-18 | Eilsberger Elektronik Gmbh | Welding appliance for cross-welding liquid-filled plastic tubing |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB759001A (en) * | 1954-10-25 | 1956-10-10 | Gen Precision Lab Inc | Improvements in or relating to the high frequency treatment of materials |
-
1958
- 1958-09-02 DE DEP21288A patent/DE1185320B/en active Pending
-
1959
- 1959-08-25 GB GB29015/59A patent/GB931806A/en not_active Expired
- 1959-09-01 FR FR804043A patent/FR1234512A/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB759001A (en) * | 1954-10-25 | 1956-10-10 | Gen Precision Lab Inc | Improvements in or relating to the high frequency treatment of materials |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993004833A2 (en) * | 1991-08-30 | 1993-03-18 | Eilsberger Elektronik Gmbh | Welding appliance for cross-welding liquid-filled plastic tubing |
WO1993004833A3 (en) * | 1991-08-30 | 1993-05-13 | Eilsberger Elektronik Gmbh | Welding appliance for cross-welding liquid-filled plastic tubing |
Also Published As
Publication number | Publication date |
---|---|
GB931806A (en) | 1963-07-17 |
FR1234512A (en) | 1960-10-18 |
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