DD144656A1 - HEATER WELDING TOOL FOR STUMP WELDING THERMOPLASTIC HALVES - Google Patents

HEATER WELDING TOOL FOR STUMP WELDING THERMOPLASTIC HALVES Download PDF

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Publication number
DD144656A1
DD144656A1 DD79213982A DD21398279A DD144656A1 DD 144656 A1 DD144656 A1 DD 144656A1 DD 79213982 A DD79213982 A DD 79213982A DD 21398279 A DD21398279 A DD 21398279A DD 144656 A1 DD144656 A1 DD 144656A1
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DD
German Democratic Republic
Prior art keywords
welding
heating element
welding tool
outside
tool
Prior art date
Application number
DD79213982A
Other languages
German (de)
Inventor
Wolfgang Tobias
Original Assignee
Wolfgang Tobias
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 Wolfgang Tobias filed Critical Wolfgang Tobias
Priority to DD79213982A priority Critical patent/DD144656A1/en
Publication of DD144656A1 publication Critical patent/DD144656A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe 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
    • 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
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • 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
    • B29C66/70—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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or 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
    • B29C66/90—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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/524—Joining profiled elements
    • B29C66/5241—Joining profiled elements for forming coaxial connections, i.e. the profiled elements to be joined forming a zero angle relative to each other
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles

Abstract

Die Erfindung bezieht sich auf ein Heizelement-Schweißwerkzeug, welches sich durch eine kurze Anheizzeit auszeichnet und insbesondere für diskontinuierliche Schweißprozesse geeignet ist. Ziel ist die Schaffung eines Heizelement-Schweißwerkzeuges, das über eine wirtschaftliche kurze Einschaltdauer verfügt und für eine Kcntakterwärraung aller schweißbaren Plaste mit reproduzierbaren Schweißparametern geeignet ist. Dia Aufgabe, ein solches Heizelement-Scnweißwerkzeug zu entwickeln, das mit kurzer Einschaltdauer und unabhängig vom Absorptionsvermögen der einzelnen Thermoplaste das Stumpfschweißen aller schweißbaren Plaste zu gewährleisten, wird erfindungsgemäß dadurch gelöst, daß die Schweißkörperflächen auf ihrer Außenseite eine dünne infrarotsti'ahlenabsorbierende Schicht, vorzugsweise aus Metall bestehend, aufweisen und die Außenseite der Schweißkörperfläche gegebenenfalls über Temperaturfühler‘zura Ab- oder Zuschalten einzelner Strahler dient. - Figur -The invention relates to a heating element welding tool, which is characterized by a short heat-up time and in particular suitable for discontinuous welding processes. the goal is the creation of a heating element welding tool that has a economical short duty cycle has and for a Constant heat treatment of all weldable plastic with reproducible Welding parameters is suitable. Dia task, such a task To develop heating element welding tool that with short Duty cycle and independent of the absorption capacity of individual thermoplastics the butt welding of all weldable To ensure plastic is inventively characterized solved that the weld body surfaces on its outside a thin infrared-absorbing layer, preferably made of Consisting of metal, and the outside of the Weld area optionally via temperature sensor'zura Disconnection or connection of individual radiators is used. - Figure -

Description

,Anmelders Wolfgang Tobias, Applicant Wolfgang Tobias

402 Halle, Schlosserstraße 17 a402 Hall, Schlosserstraße 17 a

Zustellim^sbevollmäohtigter; Delivery person;

Leit-BfN »Schweißtechnik1» im Zentralinstitut für Schweißtechnik der DDR 403 Halle, PSF 16Leit-BfN »Welding Technology 1 » in the central institute for welding technology of the GDR 403 Halle, PSF 16

Heizelembnt-Schweißwerkzeug zum Stumpfschweißen thermo· plastis eher HalbzeugeHeizelembnt welding tool for butt welding thermo · plastis rather semi-finished products

jfinwendungsgebiet der ErfindungJfinwendungsgebiet the invention

Die Erfindung betrifft ein Heizelement-Schweißwerkzeug zum Stumpfschweißen thermoplastischer Halbzeuge, vorzugsweise von Formteilen, Profilen, Rohren u· dgl·, bestehend aus einem hohlen infrarotstrahlendurchlässigen Körper, der in seinem Inneren mit Hellstrahler-Heizquellen ausgestattet ist und über Strahlenteiler und/oder Reflektoren verfügt und sich durch eine kurze Anheizzeit auszeichnet, insbesondere für diskontinuierliche Schweißprozesse.The invention relates to a heating element welding tool for butt welding thermoplastic semifinished products, preferably of molded parts, profiles, tubes and the like, consisting of a hollow body permeable to infrared radiation, which is equipped in its interior with bright radiator heat sources and has beam splitters and / or reflectors and characterized by a short heat-up time, especially for discontinuous welding processes.

Charakteristik der bekannten technischen LösungenCharacteristic of the known technical solutions

Es ist bekannt, daß Schweißwerkzeuge für das Stumpfschweißen thermoplastischer Halbzeuge in der Regel durch eine direkte oder indirekte Widerstandserwärmung beheizt werden.· Sie bestehen aus Metallscheiben, in die scheiben-,It is known that welding tools for butt welding thermoplastic semifinished products are usually heated by a direct or indirect resistance heating · They consist of metal discs, in the disc,

patronen- oder spiralförmig angeordnete Heizwiderstände eingelagert sind. Bei direkter elektrischer Widerstandserwärmung wird das band- oder' ringförmige Heizelement durch einen hohen Strom mit seinem eigenen Widerstand erwärmt.Cartridge or spirally arranged heating resistors are embedded. In direct electrical resistance heating, the band or annular heating element is heated by a high current with its own resistance.

Es sind auch Schweißwerkzeuge bekannt, die mit einem flüssigen Medium als Wärmeträger beheizt werden,, welches seine Wärme durch eine Gasflamme erhält»There are also known welding tools that are heated with a liquid medium as a heat transfer medium, which receives its heat through a gas flame »

Nachteile dieser beschriebenen Lösungen bestehen in der langen Vorwärmzeit, die erforderlich ist, um die gesamte Masse des Schweißwerkzeuges auf Schweißtemperatur zu erwärmen.Disadvantages of these solutions described are the long preheating time required to heat the entire mass of the welding tool to the welding temperature.

Wach der DD-PS I3I 908 läßt sich dieser Nachteil zwar umgehen mit einem Heizelement-Schweißwerkzeug, in dessen hohlem infrarotstrahlendurchlässigen Heizelementkörper Infrarofcstrahlungsquelien vorgesehen sind, deren Strahler durch optische Strahlungsteiler im Heizelementinneren so geteilt werden, daß eine gleichmäßige Strahlenbeteiligung und damit Wärmeverteilung auf den Heizelementaußenflächen entsteht.Wach DDD PS I3I 908 can overcome this disadvantage while using a heating element welding tool, are provided in the hollow infrared radiant heating element Infrarofcstrahlungsquelien whose radiators are divided by optical beam splitter in Heizelementinneren so that a uniform beam exposure and thus heat distribution on the Heizelementaußenflächen arises ,

Der entscheidende Nachteil bei diesem Heizelement-Schweißwerkzeug ist darin zu sehen, daß die Erwärmung der Thermoplaste vom unterschiedlichen Absorptionsvermögen abhängt, welches durch den Werkstoff selbst und durch seine Einfärbung wesentlich bestimmt wird* Es können keinerlei Parameter angegeben werden, durchsichtige Plaste sind nicht schweißbar.The decisive disadvantage of this heating element welding tool is the fact that the heating of the thermoplastics depends on the different absorption capacity, which is essentially determined by the material itself and by its coloring * No parameters can be specified, transparent plastic are not weldable.

Ziel der ErfindungObject of the invention

Durch die Erfindung ist ein Heizelement-Schweißwerkzeug mit Strahlungserwärmung ohne Vorwärmphase zu schaffen, welches über eine wirtschaftliche kurzeThe invention provides a heating element welding tool with radiation heating without preheating to create, which has a short economic

Einschaltdauer verfügt und für eine Kontakterwärmung aller schweißbaren Plaste' mit reproduzierbaren Schweißparametern ohne Einfluß ihres' Absorptionsvermögens geeignet ist.Duty cycle has and is suitable for contact heating of all weldable plastic 'with reproducible welding parameters without affecting their' absorption capacity.

Das Wesen der ErfindungThe essence of the invention

Der Erfindung liegt die Aufgabe zugrunde, ein Heizelement-Schweißwerkzeug zu entwickeln, das unter Verzicht einer Vorwärmphase in der Lage ist, mit kurzer Einschaltdauer und unabhängig vom Absorptionsvermögen der einzelnen Thermoplaste das Stumpfschweißen aller schweißbaren Plaste zu gewährleisten.The invention has for its object to develop a heating element welding tool, which is waiving a preheating phase, with a short duty cycle and regardless of the absorption capacity of the individual thermoplastics to ensure the butt welding all weldable plastic.

Erfindungsgemäß wird die Aufgabe mit einem eingangs beschriebenen Heizelement-Schweißwerkzeug gelöst und die vorbeschriebenen Nachteile im Stand der Technik dadurch beseitigt, daß die Schweißkörperflächen auf ihrer Außenseite eine dünne infrarotstrahlenabsorbierende Schicht, vorzugsweise aus Metall bestehend, aufweist, die sich sofort beim Einschalten des Infrarot-Hellstrahlers auf Schweißtemperatur erwärmt. Die Schicht kann beispielsweise durch aufgedampftes Metall hergestellt werden. Bei der Anordnung mehrerer Hellstrahler kann eine gleichmäßige Wärmeverteilung auf der Außenseite der Schweißkörperflächen durch dort angeordnete Temperaturfehler erreicht werden, welche die einzelnen Strahler ab- bzw. zuschalten.According to the invention the object is achieved with a heating element welding tool described above and eliminates the above-described disadvantages in the prior art, characterized in that the weld body surfaces on its outside a thin infrared ray absorbing layer, preferably consisting of metal, which immediately upon switching on the infrared light radiator heated to welding temperature. The layer can be produced, for example, by vapor-deposited metal. In the arrangement of a plurality of light radiators, a uniform heat distribution on the outside of the weld body surfaces can be achieved by temperature errors arranged there, which switch the individual radiators off or on.

Ausführungsbeispielembodiment

Die Erfindung soll nachstehend anhand eines Ausführungsbeispieles und der zugehörigen Zeichnung, die eine Prinzipdarstellung des Heizelement.-Schweißwerkzeuges zeigt, näher erläutert werden*The invention will be explained below with reference to an embodiment and the accompanying drawing, which shows a schematic diagram of the Heizelement.-welding tool, closer *

Die infrarotdurchlässigen Quarz-Schweißkörperflächen 1 sind auf ihrer Außenfläche mit einer dünnen infrarotstrahlenabsorbierenden Schicht.2, bestehend aus aufgedampftem Metall, versehen. Beim Einschalten des Infrarot-Hellstrahlers 3 i& Form einer Halogen-Quarilampe wird die Schicht 2 erhitzt und dient als Heizelement-Fläche. Um den Wirkungsgrad zu erhöhen, sorgen in bekannter V/eise prismatische Reflektoren 4-für eine gleichmäßige Strahlenverteilung„The infrared-transmitting quartz welding body surfaces 1 are provided on their outer surface with a thin infrared ray absorbing layer 2, consisting of vapor-deposited metal. When switching on the infrared light radiator 3 & form a halogen quartz lamp, the layer 2 is heated and serves as a heating element surface. In order to increase the efficiency, prismatic reflectors 4-provide in a known manner for a uniform radiation distribution "

Claims (1)

• · -5- 2 1 3 9 ft 2• · -5- 2 1 3 9 ft 2 Erfindungsanspruchinvention claim Heizelement-Schweißwerkzeug zum Stumpfschweißen thermoplastischer Halbzeuge, vorzugsweise von Formteilen", Profilen, Rohren u. dgl., bestehend aus einem hohlen infrarotstrahlendurchlässigen Körper, der in seinem Inneren mit Hellstrahler-Heizquellen ausgestattet ist und über Strahlenteiler und/oder Reflektoren verfügt und sich durch eine kurze Anheizzeit auszeichnet, insbesondere für diskontinuierliche Schweißprozesse, gekennzeichnet dadurch, daß die Schweißkörperflächen (1) ' auf ihrer Außenseite eine dünne infrarotstrahlenabsorbierende Schicht (2), vorzugsweise aus Metall bestehend, aufweisen und die Außenseite der Schweißkörperflächen gegebenenfalls über Temperaturfühler zum Ab- oder Zuschalten einzelner Strahler verfugen.Heating element welding tool for butt welding thermoplastic semifinished products, preferably of molded parts ", profiles, pipes and the like, consisting of a hollow body permeable to infrared radiation, which is equipped in its interior with light radiator heating sources and has beam splitters and / or reflectors and by a short heating time is characterized, in particular for discontinuous welding processes, characterized in that the weld body surfaces (1) 'on its outside a thin infrared ray absorbing layer (2), preferably made of metal, and the outside of the weld body surfaces optionally via temperature sensor for switching off or connecting individual Spotlights grout. Hfer-zu 1 SaiteHofer-to-1 string
DD79213982A 1979-06-29 1979-06-29 HEATER WELDING TOOL FOR STUMP WELDING THERMOPLASTIC HALVES DD144656A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DD79213982A DD144656A1 (en) 1979-06-29 1979-06-29 HEATER WELDING TOOL FOR STUMP WELDING THERMOPLASTIC HALVES

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Application Number Priority Date Filing Date Title
DD79213982A DD144656A1 (en) 1979-06-29 1979-06-29 HEATER WELDING TOOL FOR STUMP WELDING THERMOPLASTIC HALVES

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5628859A (en) * 1993-06-17 1997-05-13 Mecasonic S.A. Method of heating by emission of electromagnetic radiation, especially infrared radiation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5628859A (en) * 1993-06-17 1997-05-13 Mecasonic S.A. Method of heating by emission of electromagnetic radiation, especially infrared radiation

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