DE2926223A1 - Conductive wire covering - with elastomer or plastomer by microwave energy in extruder head for vulcanisation or crosslinking - Google Patents
Conductive wire covering - with elastomer or plastomer by microwave energy in extruder head for vulcanisation or crosslinkingInfo
- Publication number
- DE2926223A1 DE2926223A1 DE19792926223 DE2926223A DE2926223A1 DE 2926223 A1 DE2926223 A1 DE 2926223A1 DE 19792926223 DE19792926223 DE 19792926223 DE 2926223 A DE2926223 A DE 2926223A DE 2926223 A1 DE2926223 A1 DE 2926223A1
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- Germany
- Prior art keywords
- strand
- coating
- spray head
- microwave
- crosslinking
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/122—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex
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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
- 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
- B29C35/10—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation for articles of indefinite length
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/06—Rod-shaped
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
- B29C48/865—Heating
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/91—Heating, e.g. for cross linking
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
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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
- 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
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/041—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids
- B29C2035/042—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids other than water
-
- 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
- B29C2035/0855—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 microwave
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
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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
- B29K2021/00—Use of unspecified rubbers as moulding material
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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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0058—Liquid or visquous
- B29K2105/0073—Solution
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3462—Cables
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Manufacturing & Machinery (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
Description
Verfahren und Vorrichtung zum Beschichten von Strängen ausMethod and device for coating strands
elektrisch leitfähigem Material Die Erfindung betrifft ein Verahren zum Beschichten von Strängen aus elektrisch leitfähigem IVlaterial mit Kautschukmischungen und/oder Kunststoff und/oder anderen vernetzbaren Materialien in mindestens einer Schicht und zum Vulkanisieren und/oder Vernetzen des Materiales durch Mikrowellenenergie. electrically conductive material The invention relates to a method for coating strands of electrically conductive material with rubber compounds and / or plastic and / or other crosslinkable materials in at least one Layer and for vulcanizing and / or crosslinking the material by microwave energy.
?tli die Vulkanisation von Kautschukmischungen und für die Vernetzung von Kunststoffen müssen diese Isterialien längere Zeit auf einer bestimmten Temperatur gehalten werden, die ausreichend hoch ist, um die sich hierbei abspielenden intermolekularen Vorgänge zustandekommen zu lassen. In der Kabelindustrie wurden hierfür Anlagen gebaut, die sehr viel Bauraum beanspruchten, weil große Längen vonnöten waren, um durch einbringen von Wärme durch die Oberflächenschicht von aussen her Vulkanisationen und/oder Vernetzungen auch in inneren Schichten zu erreichen. Dabei war der Leiter wegen seiner oft niedrigen Temperatur und hohen Wärmekapazität ein zusätzliches Hindernis, welches das Fortschreiten der Vulkanisation und/oder Vernetzung im Material hinderte. Da Kautschukmischungen und Kunststoffe oft Isolatoren und damit schlechte iiärmeleiter sind, trat eine weitere Schwierigkeit hierdurch beim Einbringen der Wärme in innere Schichten eines Kabels auf. Die zur Wärme einbringung benutzten Salzbäder oder lleißluftstrecken mußten daher sehr große Längen aufweisen.? tli the vulcanization of rubber compounds and for crosslinking of plastics, these Isterials must be kept at a certain temperature for a long time that is sufficiently high to avoid the intermolecular To let processes come about. In the cable industry, systems were used for this built, which took up a lot of space because great lengths were necessary to by introducing heat from the outside through the surface layer, vulcanization and / or to achieve crosslinking in inner layers as well. The leader was there because of its often low temperature and high heat capacity an additional one An obstacle to the progress of vulcanization and / or crosslinking in the material prevented. Since rubber compounds and plastics are often insulators and therefore bad ii are thermal conductors, a further difficulty arose as a result Bring in the heat in the inner layers of a cable. The ones used to bring in heat Salt baths or air stretches therefore had to be very long.
In jüngerer Zeit gelang es, die Erwärmungsstrecken erheblich dadurch zu verkürzen, daß man Mikrowellenenergie zur Erwärmung der schlecht wärmeleitenden iaterialschichten einführte.In more recent times it has been possible to reduce the warming distances considerably to shorten the fact that microwave energy is used to heat the poorly thermally conductive i introduced layers of material.
Der Vorteil der iinfuhrung der Mikrowellenenergie ist es, daß die ilikrowellen sofort und unmittelbar auch in tiefere Materislschichten eintreten und es daher möglich wird, Wärme gleich im Inneren dieser Materialschichten zu erzeugen. Voraussetzung für die erzeugung von Wärme aus Mikrowellen in diesen Materialschichten ist es, daß diese materialschichten polare Bigenschaften aufweisen. Diese Eigenschaften einer Polarität stehen jedoch den Isoliereigenschaften bei Kabelisolationen zum Beispiel entgegen. Daher müssen in diesem anwendungsfall Materialmischungen verwendet werden, die mit der Vulkanisierung oder Vernetzung ihre polarität verlieren.The advantage of introducing microwave energy is that the Microwaves enter the deeper layers of the material immediately and immediately and therefore it becomes possible to generate heat right inside these material layers. Prerequisite for the generation of heat from microwaves in these material layers it is that these layers of material have polar properties. These properties However, one polarity is related to the insulation properties of cable insulation Example contrary. Therefore, material mixtures must be used in this application that lose their polarity with vulcanization or networking.
Die bisher benutzten anlagen zum Einbringen von Mikrowell@nenergie in beschichtete Stränge aus elektrisch leitfähigem Material sind nach Art eines Hohlleiters oder einer Resonatorkammer aufgebaut und wirksam, Dabei wirkt die Mikrowellenenergie von aussen her in den beschichteten Strang aus elektrisch leitfähigem Material ein.The systems used so far for the introduction of microwave energy in coated strands of electrically conductive material are like a Waveguide or a resonator chamber constructed and effective, where the microwave energy acts from the outside into the coated strand of electrically conductive material.
Die homogene Einführung von Mikrowellenenergie bereitet durch den Feldaufbau in Hohlleiter Schwierigkeiten.The homogeneous introduction of microwave energy prepares by the field build-up in waveguide difficulties.
Es werden hohe Anforderungen an die Gestaltung der G@ometrie des elektromagnetischen Feldes im Hohlleiter und an die Lage des beschichteten Stranges aus elektrisch leitfähigem Material in diesen Hohlleiter gestellt.There are high demands on the design of the g @ ometry of the electromagnetic Field in the waveguide and to the position of the coated strand of electrically conductive Material placed in this waveguide.
Die Holleiter und Resonatorkammern lassen sich nicht beliebig kurz bauen. Für die Einbringung der für die Vulkanisation und/oder Vernetzung benötigten Energien müssen die Hohlleiter hzw. Resonatorkammern gewisse Abmessungen aufweisen. Bei der Aufbringung mehrerer Schichten Kautschuk und/oder Kunststoff müssen die fü@ das Aufbringen dieser Schichten verwendeten Spritzköpfe in einem durch die Länge der Hohklleiter bzw. Resonatorkammern gegebenen @bstand voneinander angeordnet werden.The Holleiter and resonator chambers cannot be made arbitrarily short build. For the introduction of the materials required for vulcanization and / or crosslinking Energies must hzw the waveguide. Resonator chambers have certain dimensions. When applying several layers of rubber and / or plastic, the For the application of these layers used spray heads in one through the length the hollow conductors or resonator chambers are arranged at a given distance from one another.
Da jedoch das aus einem ersten Spritzkopf aufgetragene Material bereits in der zwischen dem ersten und dem zweiten Spritzkopf angeordneten Hikrowellenerwärmungsstrecke kr%ftig aufgeheizt wird, wird in den zweiten Extruder ein Strang mit einer Beschichtung von erheblicher Weichheit eingeführt. Das bereitet nicht unerhebliche mechanische Schwierigkeiten, denn die weiche Beschichtung darf beim Einführen in den nachfolgenden zweiten Spritzkopf nicht beschädigt werden.However, since the material applied from a first spray head is already there in the microwave heating section arranged between the first and the second spray head Is vigorously heated, a strand with a coating is fed into the second extruder of considerable softness introduced. That prepares not inconsiderable mechanical Difficulties, because the soft coating is allowed to insert into the subsequent second spray head are not damaged.
Der Erfindung liegt die Aufgabe zugrunde, die Mikrowellenenergie auf einer ausserordentlich kurzen Strecke in den zu beschichtenden Strang einzuführen und sie dann auf einer l.n:ngeren Strecke möglichst hinter den Spritzköpfen wirksam werden zu lassen.The invention is based on the object of the microwave energy an extremely short distance into the strand to be coated and then it is as effective as possible behind the spray heads over a longer distance to be let.
Die erfindung besteht darin, daß die Mikrowellenenergie an oder unmittelbar vor der Beschichtungsstelle in den Beiterstrang als Leiterwelle eingespeist wird und in Bewegungsrichtung des Stranges gerichtet wird.The invention is that the microwave energy on or directly is fed into the Beiter strand as a conductor wave before the coating point and in Direction of movement of the strand is directed.
Hierdurch wird erreicht, daß die 1;likrowellenenergie auf kürzester Strecke in den xeiterstrang eingespeist wird und dann im Leiterstrang in Richtung der Bewegung des Stranges weitergeleitet wird. Bei dieser Weiterleitung läuft die Mikrowellenergie zumindest teilweise durch die Spritzköpfe hindurch und wird, entsprechend der itlarität des Isoliermaterials, dieses kann Kautschuk oder vernetzbarer Kunststoff sein, hinter den Spritzköpfen in @ärme umgesetzt. Auf diese Weise gelingt es, die zweite Beschichtung vorzunehmen, wenn die erste schicht noch nicht die volle erweichung bzw. Vernetzung erreicht hat und noch nicht voll mit Nikrowellenenergie beaufschlagt ist und somit noch nicht voll von innen her auf die für die Vulkanisierung und/oder Vernetzung erforderliche Temperatur gebracht ist. Dadurch werden die mechanischen Schwierigkeiten beim Einführen des beschichteten Leiterstranges in eine zweite Beschichtungsvorrichtung in orm eines zweiten Spritzkopfes ganz erheblich herabgesetzt.This ensures that the 1; microwave energy is as short as possible Line is fed into the xeiterstrang and then in the ladder in the direction the movement of the strand is passed on. With this forwarding the Microwave energy at least partially through the spray heads and is, accordingly the clarity of the insulating material, this can be rubber or crosslinkable plastic implemented behind the spray heads in @ ärme. In this way, the Apply a second coat when the first coat has not yet fully softened or has reached networking and has not yet been fully charged with microwave energy is and therefore not yet fully on the inside for the vulcanization and / or Crosslinking required temperature is brought. This will make the mechanical Difficulties in introducing the coated conductor strand into a second coating device considerably reduced in the form of a second spray head.
Für die Durchführung dieses Verfahrens wird zweckmäßigerweise ein Wellenlänge gewalt, die eine Fortpflanzung der Tieiteflrelle im Leiterstrang über die Beschichtung stellen hinaus gewährleistet.To carry out this process, it is advisable to use a Wavelength force that propagates the wave length in the conductor strand the coating make addition guaranteed.
Vorteilhafterweise wird nach der Beschichtung die Oberfläche des beschichteten Stranges auf gleichmäßig hoher Behandlungstemperatur über die Mikrowelleneinwirkungsstrecke und über diese hinaus gehalten, damit eine gleichmäßige Vulkanisierung und/oder Vernetzung in den Beschichtungen des Stranges vorgenommen werden kann.Advantageously, after the coating, the surface of the coated Strand at a consistently high treatment temperature over the microwave exposure path and kept above this, so that a uniform vulcanization and / or Crosslinking can be made in the coatings of the strand.
Zur Durchführung dieses Verfahrens verwendet die Brfinduag eine Vorrichtung zum Beschichten von Strängen aus elektrisch leitfähigem Material mit Kautschukmischungen und/oder Kunststoff und zum Vulkanisieren des Kautschuks und/oder Vernetzen des Kunststoffes, bestehend aus mindestens einem Schneckenextruder mit einem Spritzkopf und einerMikrowellenerwärmungsanlage.Brfinduag uses a device to carry out this process for coating strands electrically conductive material with rubber mixtures and / or plastic and for vulcanizing the rubber and / or crosslinking of the plastic, consisting of at least one screw extruder with a spray head and a microwave heating system.
Bei dieser Vorrichtung ist @s wesentlich, daß die Einspeisestelle für die Mikrowellen in oder unmittelbar vor dem Spritzkopf angeordnet ist und zur @usbildung einer Leiterwell@ im Strang konstruiert ist. Da die Mikrowellenenergie in Form einer Leiterwelle in den Strang aus elektrsich leitfähigem Material eingespeist wird, kann die Einfährungsstelle für die Mirkowellenenergie ansserordentlich kurz ausgeführt werden, wobei die mit eingespeiste Mikrowellenenergie dann innerhalb des Stranges über erheblich größere Längen wirksam ist.In this device it is essential that the feed point for the microwaves is arranged in or immediately in front of the spray head and for The formation of a ladder corrugation in the strand is constructed. Because the microwave energy fed in the form of a conductor wave into the strand of electrically conductive material the entry point for the microwave energy can be extremely short are carried out, with the microwave energy fed in then within of the strand is effective over considerably greater lengths.
durch diese geringen Abmessungen der Einspeisungsstelle und die große Länge des Abschnittes, in dem die eingespeisten Mikrowellen wirksam sind, wird es möglich, mejhrere Spritzköpfe dicht hintereinander anzuordnen und den Strang nit mehreren Schichten zu ummanteln, wobei während der Beschichtungen keine Hinderungen durch von Mikrowellen erzeugter Energie auftreten.due to these small dimensions of the feed point and the large It becomes the length of the section in which the fed-in microwaves are effective possible to arrange several spray heads close to one another and not the strand to coat several layers, with no hindrances during the coating due to energy generated by microwaves.
Es besteht sogar die Möglichkeit, daß das Innere des Spritzkopfes als die Mikrowellen einspeisender Hohlleiter ausgebildet ist. Dadurch ist der Abstand das zweiten Spritzkopfes von der Einspeisungsstelle der Mikrowellen besonders kurz. Als besonders vorteilhaft hat es sich herausgestellt, wenn die Einführungsstelle des Leiterstranges in den Spritzkopf als Knaufantenne ausgebildet ist. Der Leiterstrang wird dann durch. die Achse der Knaufantenne hindurchgeführt, die zu diesem Zweck mit einem den Strang aufnehmenden Kanal versehen ist.There is even the possibility that the inside of the spray head is designed as a waveguide feeding in the microwaves. This is the distance the second spray head from the microwave feed point is particularly short. It has been found to be particularly advantageous if the insertion point of the conductor run in the spray head is designed as a knob antenna. The ladder strand will then go through. the axis of the knob antenna passed through for this purpose is provided with a channel receiving the strand.
Um die Energie mir in einer Richtung wirksam werden zu lassen, nämlich in Richtung des sich bewegten Stranges, ist es vorteilhaft, wenn vor dem Spritzkopf ein Mikrowellenreflektor oder elektrisch wirksamer Kurzschluß angeordnet ist, durch den der iieiterstrang geführt ist.In order to let the energy work for me in one direction, namely in the direction of the moving strand, it is advantageous if in front of the spray head a microwave reflector or electrically effective short circuit is arranged by which the iieiterstrang is led.
Vorteilhaft ist es, wenn hinter dem oder den Spritzköpfen eine Warmhaltestrecke für die Oberfläche der Beschichtung des Stranges angeordnet ist. Diese Warmhaltestrecke kann zweckmäßigerweise ein Salzbad sein. Hierdurch wird erreicht, daß die durch Mikrowellen erzeugte Energie nicht nach aussen hin durch ein Temperaturgefälle herausgetragen wird. Vorteilhaft ist es, wenn sich der Abschnitt der Wirksamkeit der Mikrowellen in die Warmhaltestrecke hinein erstreckt.It is advantageous if there is a warming section behind the spray head (s) is arranged for the surface of the coating of the strand. This warming stretch can conveniently be a salt bath. This ensures that the through Energy generated by microwaves is not carried outwards by a temperature gradient will. It is advantageous if the section of the effectiveness of the microwaves extends into the warming section.
Das Wesen der erfindung ist nachstehend arhadd eines schematisch in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert. Es zeigen: Fig. 1 eine Seitenansicht einer Vorrichtung.The essence of the invention is a schematic in arhadd below the embodiment illustrated in the drawing explained in more detail. They show: Fig. 1 is a side view of a device.
Fig. 2 den Grundriß dieser Vorrichtung.Fig. 2 shows the plan of this device.
Fig. 3 einen als Einspeisungestelle für Mikrowellen ausgestalteten Spritzkopf im Schnitt.3 shows one designed as a feed point for microwaves Spray head in section.
Fig. 4 eine Einspeisungsstelle für Mikrowellen in einer Anordnung dicht hinter einem Spritzkopf im Schnitt.4 shows a feed point for microwaves in an arrangement close behind a spray head in the cut.
Ein Strang 1 aus elektrisch leitfahigem Material wird von einer Trommel 2 abgerollt und in dem Spritzkopf 3 mit plastischem oder elastomerischem Material umgeben.A strand 1 of electrically conductive material is taken from a drum 2 unrolled and in the spray head 3 with plastic or elastomeric material surround.
Der Spritzkopf 3 wird von dem Schneckenextruder 4 gespeist. In einem weiteren Spritzkopf 5, der von einem weiteren Schneckenextruder 6 gespeist ist, wird eine zweite Schicht aus plastischem oder elastomerischem Ilaterial auf den Strang aufgebracht, @, der dann durch ein Salzbad 7 geleitet wird.The extrusion head 3 is fed by the screw extruder 4. In one further spray head 5, which is of a another screw extruder 6 is fed, a second layer of plastic or elastomeric Ilmaterial applied to the strand, @, which is then passed through a salt bath 7.
In Sig. 3 ist eine Ausführungsmöglich1eit gezeigt: Der Spritzkopf 3 weist eine Öffnung 8 auf, durch die der Strang 1 eingeleitet wird sowie eine von einem Keramikring 9 umgebene Öffnung, durch die der mit elastomerischem oder plastischem Material umgebene Strang wie der aus dem Spritzkopf 3 austritt. Das Innere des Snritzkopfes 3 wird von dem Mikrowellen-C-enerator 10 mit Mikrowellenenergie gespeist. Hinter der Eintrittsöffnung 8 befindet sich im Inneren des Spritzkopfes 3 eine Führungshülse 11 aus Metall für den iieiterstrang 1, welche der miinleitung der Mikrowellenenergie im Inneren des Spritzkopfes 3 in den Strang 1 aus elektrisch leitfähigem Material dient. Der Spritzkopf 3 besteht aus einem metallischen Gehäuse 12 und in dem metallischen Gehäuse angeordneten Keramikstücken 13, 14, 15, zwischen denen die Fließwege für das den Schneckenextruder 4 verlassende, um den Strang 1 als Schicht 16 aufgebrachte Ibterial ausgebildet sind.In Sig. 3 one possible embodiment is shown: the spray head 3 has an opening 8 through which the strand 1 is introduced and one of a ceramic ring 9 surrounding opening through which the elastomeric or plastic Strand surrounded by material like the one emerging from the extrusion head 3. The inside of the scratch head 3 is fed from the microwave C-enerator 10 with microwave energy. Behind the inlet opening 8 is located in the interior of the spray head 3, a guide sleeve 11 made of metal for the conductor strand 1, which conducts the microwave energy inside the spray head 3 in the strand 1 made of electrically conductive material serves. The spray head 3 consists of a metallic housing 12 and in the metallic one Housing arranged ceramic pieces 13, 14, 15, between which the flow paths for that which leaves the screw extruder 4 and is applied around the strand 1 as layer 16 Ibterial are trained.
Eine andere Ausführungsform zeigt die ig. 4. Hier ist vor dem Spritzkopf 3 eine Vorrichtung 17 angebracht, deren Innenraum an den Mikrowellengenerator 10 angeschlossen ist und die in ihrem Inneren eine Knaufantenne 11 aufweist. Im Inneren dieser Vorrichtung wird die Mikrowellenenergie als Leiterwelle in den Strang 1 eingespeist, der daraufhin in den Spritzkopf 5 einläuft, der eine keramische ringförmige Führung 18 am Eingang 9 und am Ausgang aufweist . Der im Inneren angeordnete Teil des Spritzkopfes ), der den Strang 1 umgibt, ist aus keramischem Material gefertigt. In dieses keramische Material sind die Fließwege für das elastomerische, plastische Material eingeformt, das als Schicht 16 um den Strang 1 herum geformt wird.Another embodiment shows the ig. 4. Here is in front of the spray head 3 a device 17 is attached, the interior of which is attached to the microwave generator 10 is connected and which has a knob antenna 11 in its interior. Internally In this device, the microwave energy is fed into strand 1 as a conductor wave, which then runs into the spray head 5, which has a ceramic ring-shaped guide 18 at the input 9 and at the output. The inside part of the spray head ), which surrounds the strand 1, is made of ceramic material. In this ceramic material are the flow paths for the elastomeric, plastic Shaped in material which is formed as a layer 16 around the strand 1.
Der Strang aus elektrisch leitfähigem Material braucht nicht beim späteren einsatz elektrisch zu leiten, sondern es kann sich auch um andere Gegenstande mit elektrisch leitfähigem Innenleiter handeln, wie z.B. metallarmierte Schläuche, wie sie als Hochdruckschläuche, Bremsschläuche usw. benutzt werden.The strand of electrically conductive material does not need the Later use to conduct electricity, but it can also concern other objects deal with an electrically conductive inner conductor, such as metal-armored hoses, how they are used as high pressure hoses, brake hoses, etc.
Es handelt sich hier bei der Metallarmierung meist um ein Drahtgeflecht. Die Herstellung derartiger Schläuche erfolgt, ebenso wie die Herstellung von Kabeln,nach der vorliegenden Erfindung.The metal reinforcement is usually a wire mesh. The manufacture of such hoses, as well as the manufacture of cables, takes place according to of the present invention.
L e e r s e i t eL e r s e i t e
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792926223 DE2926223A1 (en) | 1979-06-29 | 1979-06-29 | Conductive wire covering - with elastomer or plastomer by microwave energy in extruder head for vulcanisation or crosslinking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792926223 DE2926223A1 (en) | 1979-06-29 | 1979-06-29 | Conductive wire covering - with elastomer or plastomer by microwave energy in extruder head for vulcanisation or crosslinking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2926223A1 true DE2926223A1 (en) | 1981-01-08 |
Family
ID=6074441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19792926223 Withdrawn DE2926223A1 (en) | 1979-06-29 | 1979-06-29 | Conductive wire covering - with elastomer or plastomer by microwave energy in extruder head for vulcanisation or crosslinking |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2926223A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2541626A1 (en) * | 1983-02-25 | 1984-08-31 | Meo Robert Di | PROCESS FOR PRODUCING A MOLDED PROFILE OF PARTICLES OR MINERAL, VEGETABLE OR SYNTHETIC FIBERS AND DEVICE FOR CARRYING OUT SAID METHOD |
| FR2565887A1 (en) * | 1984-06-14 | 1985-12-20 | Ems Extrusion | Continuous vulcanisation and/or crosslinking line, especially for producing insulating synthetic layers on cables |
| US4702867A (en) * | 1985-06-17 | 1987-10-27 | Kabushiki Kaisha Meiji Gomu Kasei | Method for continuously vulcanizing hoses |
| EP0248947A2 (en) * | 1986-06-13 | 1987-12-16 | Firma Carl Freudenberg | Process and apparatus for manufacturing a polymer hose reinforced with threads |
| EP0420632A2 (en) * | 1989-09-27 | 1991-04-03 | Kinugawa Rubber Industrial Co., Ltd. | Apparatus for continuously vulcanizing rubber molding |
| EP0470824A1 (en) * | 1990-08-09 | 1992-02-12 | Mitsuba Manufacturing Co., Ltd. | Method and apparatus for producing rubber coated electric wire |
| EP1225027A1 (en) * | 2001-01-18 | 2002-07-24 | Linn High Term GmbH | Method and apparatus for producing agglomerated product |
| CN102729313A (en) * | 2011-04-11 | 2012-10-17 | 李苏扬 | Extrusion equipment provided with microwave heating device for plant fiber product |
| CN103331799A (en) * | 2013-06-18 | 2013-10-02 | 泗阳蓝阳托盘设备科技有限公司 | Plant fiber extruder with microwave heating device |
| DE102019106355A1 (en) * | 2019-03-13 | 2020-09-17 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Method and device for impregnating a fiber bundle as well as method and system for producing a three-dimensional structure |
-
1979
- 1979-06-29 DE DE19792926223 patent/DE2926223A1/en not_active Withdrawn
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2541626A1 (en) * | 1983-02-25 | 1984-08-31 | Meo Robert Di | PROCESS FOR PRODUCING A MOLDED PROFILE OF PARTICLES OR MINERAL, VEGETABLE OR SYNTHETIC FIBERS AND DEVICE FOR CARRYING OUT SAID METHOD |
| EP0118079A1 (en) * | 1983-02-25 | 1984-09-12 | Robert Di Meo | Method of manufacturing a moulded profile from mineral, vegetable or synthetic particles or fibres, and apparatus for carrying out said method |
| FR2565887A1 (en) * | 1984-06-14 | 1985-12-20 | Ems Extrusion | Continuous vulcanisation and/or crosslinking line, especially for producing insulating synthetic layers on cables |
| US4702867A (en) * | 1985-06-17 | 1987-10-27 | Kabushiki Kaisha Meiji Gomu Kasei | Method for continuously vulcanizing hoses |
| EP0248947A2 (en) * | 1986-06-13 | 1987-12-16 | Firma Carl Freudenberg | Process and apparatus for manufacturing a polymer hose reinforced with threads |
| EP0248947A3 (en) * | 1986-06-13 | 1988-10-05 | Firma Carl Freudenberg | Process and apparatus for manufacturing a polymer hose reinforced with threads |
| EP0420632A2 (en) * | 1989-09-27 | 1991-04-03 | Kinugawa Rubber Industrial Co., Ltd. | Apparatus for continuously vulcanizing rubber molding |
| EP0420632A3 (en) * | 1989-09-27 | 1991-07-24 | Kinugawa Rubber Industrial Co., Ltd. | Apparatus for continuously vulcanizing rubber molding |
| US5542833A (en) * | 1989-09-27 | 1996-08-06 | Kinugawa Rubber Industrial Co., Ltd. | Apparatus for continuously vulcanizing rubber product |
| EP0470824A1 (en) * | 1990-08-09 | 1992-02-12 | Mitsuba Manufacturing Co., Ltd. | Method and apparatus for producing rubber coated electric wire |
| EP1225027A1 (en) * | 2001-01-18 | 2002-07-24 | Linn High Term GmbH | Method and apparatus for producing agglomerated product |
| CN102729313A (en) * | 2011-04-11 | 2012-10-17 | 李苏扬 | Extrusion equipment provided with microwave heating device for plant fiber product |
| CN103331799A (en) * | 2013-06-18 | 2013-10-02 | 泗阳蓝阳托盘设备科技有限公司 | Plant fiber extruder with microwave heating device |
| DE102019106355A1 (en) * | 2019-03-13 | 2020-09-17 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Method and device for impregnating a fiber bundle as well as method and system for producing a three-dimensional structure |
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