DD210647A1 - HEATING ELEMENT - WELDING TOOL FOR CONNECTING FLAED THERMOPLASTIC TOOLS - Google Patents

HEATING ELEMENT - WELDING TOOL FOR CONNECTING FLAED THERMOPLASTIC TOOLS Download PDF

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Publication number
DD210647A1
DD210647A1 DD82243883A DD24388382A DD210647A1 DD 210647 A1 DD210647 A1 DD 210647A1 DD 82243883 A DD82243883 A DD 82243883A DD 24388382 A DD24388382 A DD 24388382A DD 210647 A1 DD210647 A1 DD 210647A1
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DD
German Democratic Republic
Prior art keywords
heating element
welding tool
cooling
welding
heating
Prior art date
Application number
DD82243883A
Other languages
German (de)
Inventor
Wolfgang Tobias
Rainer Sturm
Original Assignee
Zi F Schweisstechnik
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zi F Schweisstechnik filed Critical Zi F Schweisstechnik
Priority to DD82243883A priority Critical patent/DD210647A1/en
Priority to DE19833316569 priority patent/DE3316569A1/en
Publication of DD210647A1 publication Critical patent/DD210647A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C65/245—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 the heat transfer being achieved contactless, e.g. by radiation
    • 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
    • B29C66/45—Joining of substantially the whole surface of the 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
    • B29C66/72—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
    • B29C66/723—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 being multi-layered
    • 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
    • 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
    • B29C66/81811—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 welding jaws
    • B29C66/81812—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 welding jaws the welding jaws being cooled from the outside, e.g. by blowing a gas or spraying a liquid
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91212—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91231—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0033—Heating devices using lamps
    • H05B3/0038—Heating devices using lamps for industrial applications
    • H05B3/0057—Heating devices using lamps for industrial applications for plastic handling and treatment
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value

Landscapes

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

Abstract

Die Erfindung bezieht sich auf ein Heizelement-Schweisswerkzeug zum Verbinden flaechenhafter Thermoplasthalbzeuge. Ziel ist flaechenhafte Thermoplasthalbzeuge unter Druck des Schweisswerkzeuges anzuwaermen und abzukuehlen. Das Schweisswerkzeug ist so auszubilden, dass es waehrend der kurzzeitigen Anwaermphase einen Druck auf die Schweissteile ausuebt und diesen Druck waehrend der kurzen Abkuehlphase beibehaelt. Erfindungsgemaess weist ein metallischer Heizelementkoerper mit grosser Waermeleitfaehigkeit, grosser Oberflaeche und geringer Masse Absorptionskanaele zum Aufheizen und Abkuehlen auf, die in ihrem Inneren mit Infrarothellstrahlern ausgestattet sind, deren Durchmesser kleiner als der Durchmesser der Absorptionskanaele bemessen ist und Thermofuehler ueber die Infrarothellstrahler mit einem Geblaese in Wirkverbindung stehen.The invention relates to a heating element welding tool for connecting flat Thermoplasthalbzeuge. The aim is to warm and cool surface-type thermoplastic pulleys under pressure from the welding tool. The welding tool is to be designed in such a way that it exerts pressure on the welding parts during the short-term starting phase and maintains this pressure during the short cooling phase. According to the invention, a metallic Heizelementkoerper with great Waermeleitfaehigkeit, large surface area and low mass absorption channels for heating and cooling, which are equipped in their interior with infrared radiators whose diameter is smaller than the diameter of the absorption channels and thermofluor over the infrared radiator with a blower in operative connection stand.

Description

Heizelement-Schweißwerkzeug zum Verbinden flächenhafter Th e r moplasthalbzeugeHeating element welding tool for joining areal Th har moplasthalbzeuge

Anwendungsgebiet der ErfindungField of application of the invention

Die Erfindung betrifft ein Heizelement-Schweißwerkzeug zum Verbinden flächenhafter Thermoplasthalbzeuge, vorzugsweise von thermoplastischen Folien und Bändern, bestehend aus einem Heizelementkörper, der in seinem Inneren mit riellstrahler-Heizquellen aasgestattet ist und sich durch eine kurze Aufheizzeit und schnelle Abkühlung für Schweißteile auszeichnet, deren Abkühlphase nach dem Schweißen unter Wirkung des Schweißdruckes erfolgt.The invention relates to a heating element welding tool for connecting planar Thermoplasthalbzeuge, preferably of thermoplastic films and tapes, consisting of a Heizelementkörper which is fitted with riellstrahler heat sources in its interior and is characterized by a short heat-up time and rapid cooling for welds, the cooling phase after the welding takes place under the effect of welding pressure.

Charakteristik der bekannten technischen LösungenCharacteristic of the known technical solutions

Es ist bekannt, daß thermoplastische Folien mittels Wärmeimpulsschweißen verbunden werden, wobei ein isoliertes Metallband geringer Masse die Anwärmung übernimmt und ein metallischer massiver Druckstempel mit hoher Wärmeleitfähigkeit für die Abkühlung sorgt. Hierbei handelt es sich um ein diskontinuierliches Verfahren, welches sich nur für schmale Schweißnähte einsetzen läßt.It is known that thermoplastic films are bonded by means of heat pulse welding, wherein an insulated metal band of low mass takes over the heating and a metallic solid plunger with high thermal conductivity ensures the cooling. This is a discontinuous process, which can be used only for narrow welds.

Weiterhin ist bekannt, Heizelement-Schweißwerkzeuge für das Stumpfschweißen thermoplastischer Halbzeuge in der Regel durch eine direkte oder indirekte Widerstandserwärmung zu beheizen* Derartige Schweißwerkzeuge besitzen eine zu lange Abkühlphase, so daß sie für Schweißteile, die unter Druck kurzzeitig abkühlen müssen, nicht geeignet sind.It is also known to heat heating element welding tools for butt welding thermoplastic semi-finished products usually by a direct or indirect resistance heating * Such welding tools have too long a cooling phase, so that they are not suitable for welding parts that have to cool briefly under pressure.

Andere Wärmequellen bei bekannten Schweißwerkzeugen, beispielsweise Infrarotstrahler oder Infrarothellstrahler, führen zwar.zu einer schnellen Aufheizung, jedoch fehlen diesen Schweißwerkzeugen konstruktive Mittel, die den Schweißdruck auch während der Aufheiz- und Abkühlphase erzeugen.Although other sources of heat in known welding tools, such as infrared radiators or infrared radiators, werden.zu a rapid heating, but these welding tools lack constructive means that produce the welding pressure during the heating and cooling phase.

Nach der DD-PS 131 908 ist ein Heizelement-Schweißwerkzeug bekannt, in dessen hohlem infrarotstrahlendurchlässigem Heizelementkörper Infrarotstrahlungswellen vorgesehen sind, deren Strahler durch optische Strahlungsteiler im Heizelementinneren so geteilt werden, daß eine gleichmäßige Strahlenbeteiligung und damit Wärmeverteilung auf den Heizelementaußenflächen entsteht. Aufgrund der niedrigen Wärmeleitzahl des Quarzglases erfolgt auch hier nur eine langsame Abkühlung, Nach der DD-PS 144 656 ist ein Heizelement-SchweißwerkzeugAccording to DD-PS 131 908 a heating element welding tool is known, are provided in the hollow infrared radiant heating element body infrared radiation waves whose radiators are divided by optical beam splitter in Heizelementinneren so that a uniform radiation exposure and thus heat distribution on the Heizelementaußenflächen arises. Due to the low thermal conductivity of the quartz glass is also only a slow cooling, According to DD-PS 144 656 is a heating element welding tool

thermoplastischer Halbzeuge bekannt, bei welchem die Schweiß· körperf!Sehen auf ihrer Außenseite eine dünne infrarotstrahlabsorbierende Schicht aufweisen und die Außenseite der Schweißkörperfläche gegebenenfalls über Temperaturfühler zum Ab- oder Zuschalten einzelner Strahler ver- ' fügen.Thermoplastic semi-finished products are known in which the perspiration corporeal vision has on its outside a thin infrared-ray-absorbing layer and, if appropriate, the outside of the weld body surface via temperature sensor for switching off or on individual emitters ver.

Auch dieses Heizelement-Schweißwerkzeug läßt sich für Schweißteile, die unter Druck kurzzeitig abkühlen müssen, nicht einsetzen.Also, this heating element welding tool can not be used for welded parts that have to cool briefly under pressure.

Ziel der ErfindungObject of the invention

Durch die Erfindung ist ein Heizelement-Schweißwerkzeug zu schaffen, mit welchem flächenhafte Thermoplasthalbzeuge, vorzugsweise thermoplastische Folien und Bänder, unter Druck des Schweißwerkzeuges angewärmt und abgekühlt werden können.The invention provides a heating element welding tool with which laminar Thermoplasthalbzeuge, preferably thermoplastic films and tapes, can be heated and cooled under pressure of the welding tool.

Das Wesen der ErfindungThe essence of the invention

Der Erfindung liegt die Aufgabe zugrunde, ein Heizelement-Schweißwerkzeug zu entwickeln und dieses so zu gestalten, daß während der kurzzeitigen Anwärmphase ein Druck auf die Schweißteile ausübbar ist, der auch während der kurzen Abkühlphase konstant beibehalten werden kann und die kurzzeitige Abkühlung sehr intensiv und an den Stellen der vorherigen vVärmeeinbringung erfolgen soll. Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß ein metallischer Heizelementkörper, mit großer Wärmeleitfähigkeit, großer Oberfläche und geringer Masse Absorptionskanäle zum Aufheizen und Abkühlen aufweist, die in ihremThe invention has for its object to develop a heating element welding tool and to make this so that during the short warming phase pressure on the welds is exercisable, which can be maintained constant even during the short cooling phase and the short-term cooling very intense and on the places of previous infestation. According to the invention the object is achieved in that a metallic Heizelementkörper, with high thermal conductivity, high surface area and low mass absorption channels for heating and cooling, which in their

Inneren mit Infrarothellstrahlern ausgestattet sind, deren Durchmesser kleiner als der Durchmesser der Absorptionskanäle bemessen ist und Thermofühler über die Infrarotstrahler mit einem Gebläse in Wirkverbindung stehen, Die Wandung der Bohrung dient als Wärmeabsorptionsfläche» Nach Beenden der Anwärmphase« das heißt mit dem Erlöschen der Strahlungsquellen wird über die Oberfläche des Werkzeuges und durch die Kanäle ein Kühlgas geblasen. Dabei erfolgt unter anderem die intensive Abkühlung an den überflächen, die vorher die Anwärmung übernommen haben. Die Absorptionskanäle weisen eine schwarze Einfärbung auf.Inner are equipped with infrared radiators whose diameter is smaller than the diameter of the absorption channels and thermocouples via the infrared radiator with a blower in operative connection, The wall of the bore serves as a heat absorbing surface after the end of the warming-up phase "ie with the extinction of the radiation sources is about the surface of the tool and blown through the channels a cooling gas. Among other things, the intensive cooling takes place on the surfaces that have previously taken over the warming up. The absorption channels have a black coloration.

Ausführungsbeispielembodiment

Die i£rfindung soll nachstehend an einem Ausführungsbeispiel näher erläutert werden.The invention will be explained in more detail below using an exemplary embodiment.

Gemäß der Zeichnungen werden zwischen zwei aufeinander zu beweglichen Heizelementkörper 1, in denen sich Absorptionskanäle 2 mit Infrarothellstrahlern 3 befinden, mehrlagige Thermoplastfolien 4 eingelegt, die ganzflächig verschweißt werden sollen. Durch Zusammenfahren der Heizelementkörper 1 werden die Thermoplastfolien 4 zusammengepreßt und durch Einschalten der Infrarothellstrahler 3, die die Heizelementkörper 1 aufgrund ihrer geringen Hasse schnell erwärmen, in plastischen Zustand versetzt und verschweißt. Thermofühler 5 schalten die Infrarothellstrahler 3 bei Erreichen einer bestimmten Heizelementkörper-Temperatur ab und setzen ein Gebläse in Gang, dessen Luftstrom alle äußeren und inneren Oberflächen der Heizelementkörper 1 schnell abkühlt. Dabei dienen die Wärmeabsorptionsflachen gleichzeitig als Kühlflächen. Die Infrarothellstrahler 3 mit ihrer geringen Masse besitzen keinen Einfluß. Nach Erreichen einer Mindesttemperatur fahren die Heizelementkörper 1 auseinander und geben die formstabile geschweißte Folienverbindung frei.According to the drawings, multilayer thermoplastic films 4 are inserted between two mutually movable to heating element body 1, in which absorption channels 2 are located with infrared radiators 3, which are to be welded over the entire surface. By moving together the Heizelementkörper 1, the thermoplastic films 4 are pressed together and set by switching on the infrared radiator 3, which heat the Heizelementkörper 1 quickly due to their low hatred, in the plastic state and welded. Thermal sensors 5 turn off the infrared radiators 3 upon reaching a certain heating element body temperature and set in motion a fan whose air flow rapidly cools all the outer and inner surfaces of the heating element body 1. At the same time, the heat absorption surfaces serve as cooling surfaces. The infrared radiator 3 with their low mass have no influence. After reaching a minimum temperature, the heating element body 1 move apart and release the dimensionally stable welded film connection.

Claims (2)

Erfindungsanspruchinvention claim Heizelement-Schweißwerkzeug zum Verbinden flächenhafter Thermoplasthalbzeuge, vorzugsweise von thermoplastischen Folien und Bändern, bestehend aus einem Heizelementkörper, der in seinem Inneren mit Hellstrahler-Heizquellen ausgestattet ist und sich durch eine kurze Aufheizzeit und schnelle Abkühlung für Schweißteile auszeichnet, deren Abkühlphase nach dem Schweißen unter Wirkung des Schweißdruckes erfolgt, gekennzeichnet dadurch, daß ein metallischer Heizelement körper (1) mit großer Wärmeleitfähigkeit, großer Oberfläche und geringer Masse Absorptionskanäle (2) zum Aufheizen und Abkühlen aufweist, die in ihrem Inneren mit Infrarothellstrahlern (3) ausgestattet sind, deren Durchmesser kleiner als der Durchmesser der Absorptionskanäle (2) bemessen ist und Thermofühler (5) über die Infrarothellstrahler (3) mit einem Gebläse (6) in iVirkverbindung stehen.Heating element welding tool for connecting planar Thermoplasthalbzeuge, preferably of thermoplastic films and tapes, consisting of a Heizelementkörper, which is equipped in its interior with light radiator heat sources and is characterized by a short heating and rapid cooling for welds whose cooling phase after welding under effect the welding pressure, characterized in that a metallic heating element body (1) having high thermal conductivity, high surface area and low mass absorption channels (2) for heating and cooling, which are equipped in their interior with infrared radiators (3) whose diameter is smaller than the diameter of the absorption channels (2) is dimensioned and thermocouples (5) are in iVirkverbindung via the infrared radiator (3) with a fan (6). 2. Heizelement-Schweißwerkzeug zum Verbinden flächenhafter Thermoplasthalbzeuge nach Anspruch 1, gekennzeichnet dadurch, daß die Absorptionskanäle eine schwarze Einfärbung aufweisen.Second heating element welding tool for connecting planar Thermoplasthalzeug according to claim 1, characterized in that the absorption channels have a black color. - Hierzu ein Blatt Zeichnungen"- For this a sheet of drawings "
DD82243883A 1982-10-11 1982-10-11 HEATING ELEMENT - WELDING TOOL FOR CONNECTING FLAED THERMOPLASTIC TOOLS DD210647A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DD82243883A DD210647A1 (en) 1982-10-11 1982-10-11 HEATING ELEMENT - WELDING TOOL FOR CONNECTING FLAED THERMOPLASTIC TOOLS
DE19833316569 DE3316569A1 (en) 1982-10-11 1983-05-06 Heated element welding tool for joining planar thermoplastic semi-finished products

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DD82243883A DD210647A1 (en) 1982-10-11 1982-10-11 HEATING ELEMENT - WELDING TOOL FOR CONNECTING FLAED THERMOPLASTIC TOOLS

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AT381275B (en) * 1984-11-13 1986-09-25 Neumueller Walter WELDING MACHINE
DE19743157A1 (en) * 1997-09-30 1999-04-01 Bosch Gmbh Robert Method for heating continuous thermoformable foil bands in packaging equipment between a pair of contact plates
EP3009255B1 (en) * 2014-10-13 2019-04-03 Sunbeam Products, Inc. Vacuum packaging and sealing appliance with cooling fan
GB2560033A (en) * 2017-02-28 2018-08-29 Rolls Royce Plc Apparatus and methods for providing thermal energy to an article

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