DE2852885A1 - Universal welder for thermoplastics - has arms fitted with heated plates and high-frequency electrodes for application as required - Google Patents

Universal welder for thermoplastics - has arms fitted with heated plates and high-frequency electrodes for application as required

Info

Publication number
DE2852885A1
DE2852885A1 DE19782852885 DE2852885A DE2852885A1 DE 2852885 A1 DE2852885 A1 DE 2852885A1 DE 19782852885 DE19782852885 DE 19782852885 DE 2852885 A DE2852885 A DE 2852885A DE 2852885 A1 DE2852885 A1 DE 2852885A1
Authority
DE
Germany
Prior art keywords
welding
press according
welding press
rollers
heating
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.)
Withdrawn
Application number
DE19782852885
Other languages
German (de)
Inventor
Herbert Fuchslocher
Joerg Dipl Ing Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
L Stromeyer and Co GmbH
Original Assignee
L Stromeyer and Co GmbH
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 L Stromeyer and Co GmbH filed Critical L Stromeyer and Co GmbH
Priority to DE19782852885 priority Critical patent/DE2852885A1/en
Priority to EP79710013A priority patent/EP0013533A2/en
Publication of DE2852885A1 publication Critical patent/DE2852885A1/en
Priority to DE19803045811 priority patent/DE3045811A1/en
Withdrawn legal-status Critical Current

Links

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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/60—Riveting or staking
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/748—Joining plastics material to non-plastics material to natural products or their composites, not provided for in groups B29C66/742 - B29C66/746
    • B29C66/7485—Natural fibres, e.g. wool, cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81465—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed behind the other in a single row in the feed direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83421—Roller, cylinder or drum types; Band or belt types; Ball types band or belt types
    • B29C66/83423—Roller, cylinder or drum types; Band or belt types; Ball types band or belt types cooperating bands or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/435—Making large sheets by joining smaller ones or strips together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A welding press for thermoplastics has >=1 pair of heated pressure plates on each side and parallel to the moving web of material. These plates can be replaced in operation by electrodes connected to a generator, and the press has a cover with an entry slit for the plastic webs. Universal application i.e. for thermal or h/f welding as required by the material used.

Description

Kunststoff-Schweißpresse Plastic welding press

Die Erfindung betrifft eine Kunststoff-Schweißpresse zum Kontaktwärme-Schweißen von Kunststoffbahnen mit wenigstens einem beidseits der Bewegungsbahn der Kunststoffbahnen und zu diesen etwa parabel angebrachtem Heizbalkonpaar, dessen Heiabalken od. dgl. unter Druck gegeneinander führbar gelagert sind.The invention relates to a plastic welding press for contact heat welding of plastic webs with at least one on both sides of the path of movement of the plastic webs and to this approximately parabola attached Heizbalkonpaar, whose heating beams or the like. are mounted under pressure to be guided against one another.

Zum Schweißen von Kunststoffbahnen aller Art sind Schweißmaschinen bekannt, bei denen sogenannte Heizbalken -- einander gegenüberliegend -- einen Schweißbereich bilden sie werden unter hohem Druck gegeneinander geführt und verschweißbn dabei thermisch die Bahnen.Welding machines are used for welding plastic sheets of all kinds known, in which so-called heating bars - opposite each other - a welding area they are guided against each other under high pressure and welded in the process thermally the tracks.

Als nachteilig hat sich bei derartigen Schweißmaschinen gezeigt, daß sie nur begrenzt eingesetzt werden; übliche Folien werden zwischen einander gegenüberliegenden Rlektroden hochfrequent vorschweißt. Vorrichtungen hierfür allerdinge eignen sich aus ncheliegenden Gründen nicht zum Verschweißen von Folien mit isolierendem Werkstoff.It has been shown to be disadvantageous in such welding machines that they are only used to a limited extent; usual Slides are between opposing electrodes are pre-welded at high frequency. Devices therefor however, for the following reasons, they are not suitable for welding foils with insulating material.

Die Mängel beider Vorrichtunglen haben dazu geführt.The shortcomings of both devices have led to this.

daß der wirtachaftliche Einsatz der Schweißpressen immer mohr in Prage gestellt werden mußte. Eine Lösung hat man darin gesehen, unterschiadliche Folien in Spazialbetrieben zu verschweißen.that the economic use of welding presses is always slow in Prague had to be asked. A solution was seen in different foils to be welded in special facilities.

Angesichts dieser Gegebenheiten hat sich der Erfinder das Ziel gesetzt, eine Schweißpresse der eingangs erwähnten Art zu schaffen, welche universal eingesetzt zu werden vermag, welche also in wirtschaftlich ver= tretbarem Rahmen die Verzarbeitung von oblichen Folien und isolierenden Bahnen erlaubt.In view of these circumstances, the inventor has set himself the goal of to create a welding press of the type mentioned, which is used universally able to become, which means processing within an economically justifiable framework of the above foils and insulating sheets allowed.

Zur Lösung dieser Aufgabe führt, daß die Heizbalken der eingangs erwähnten Schweißpresse durch einander gegenüberliegende, an einen Generator angeschlossene Elektroden austauschbar angeordnet sind und die Schweißpresse ein Gehäuse mit einem Durchlaufschlits für die Kunststoffbahnen aufweist. Dabei sollen die Elaktroden mit ihren Generatoranschlüszen in der Schweispresse bewagbar angebracht sein.To solve this problem, the heating bars of the aforementioned Welding press by opposing each other connected to a generator Electrodes are arranged interchangeably and the welding press has a housing with a Has pass-through slots for the plastic webs. The elctrodes should be movably mounted with their generator connections in the welding press.

Es ist sich in der Praxis gezeigt, daß ein einfaches Garüsten Gblicher thermischer Schweißpressen durch den Einbau von Elektroden nicht ausreicht, um Folienbahnen schweißen zu können. Erst die vorstehenden erfindungsgemäßen Maßgaben führen zu einer Schweißpresse, welche die gestellte Aufgabe zu losen vermag.It has been shown in practice that a simple preparation Gblicher thermal welding presses due to the installation of electrodes are not sufficient to Sheeting to be able to weld. Only the above provisions according to the invention lead to a welding press capable of solving the task at hand.

Dabei hat es sich als besonders günstig erwiesen, Heizbalken und Elektroden um eine Achse drehbar anzuordnen, beispielsweise -- nach einem anderen Merkmal der Erfindung -- an einem drehbar gelagrrtrcen Querbalken od. dgl., gegenüber dem sie schwenkbar und/oder anhebbar bzw. senkbar sind. Dies erlaubt eine einfache Umstellung sogar während des Schweißbetriebes. Im Rahmen der Erfindung liegen alle anderen Bauformen, welche ein problemlosen und rasches Wechseln von Hei=balken und Elektroden erlauben.It has proven to be particularly beneficial to use heating bars and electrodes to be rotatably arranged around an axis, for example - according to another feature of the Invention - od on a rotatable gelagrrtrcen crossbeam can be pivoted and / or raised or lowered. This allows a simple changeover even during the welding operation. All others are within the scope of the invention Designs that allow quick and easy changing of hot bars and electrodes allow.

Nach einem anderen Merkmal der Erfindung ist dem Schweißbereich eine Kühlitrecke nachgeschaltet, gegebenenfalls auch eine Vorwärastrecke vorgeordnet.According to another feature of the invention, the welding area is one Downstream cooling section, possibly also upstream of a pre-heating section.

Dabei soll die Kühlstrecke entweder den Heizbalken entsprechend ausgebildete Kühlbalken aufweisen oder Walzen- bzw. Rollenpaare, welche von kühlmittel durchflossen und gegen die Kunststoffbahnon drückend geführt werden können. Als günstig hat es sich erwiesen, Heizbalken und Xthlstrecke/n synchron fahrbar zu steuern.The cooling section should either have the heating bar appropriately designed Have cooling bars or pairs of rollers or rollers through which coolant flows and can be guided pushing against the Kunststoffbahnon. As cheap it has proved to be able to control heating beams and Xthl segment / s synchronously mobile.

Um eine für die Kontaktwrme-Schweißung wünschenswerte Pressung zu erreichen und den zu schweißenden Werkstoff in die bzw. aus der Schweißmaschine zu führen, sind die erwähnten Rollenpaare den Schweiß-oder Heizbalken ror- bzw. nachgeschaltet und üben einen kontinuierlichen Druck aus, der dann besonders günstig ist, wenn die Walzen an jeweils einer Seite der Bewegungsbahn von einem gemeinsamen Druckband umfangen sind, beispielsweise in der Art einer Panzerkette.In order to achieve a pressure that is desirable for contact heat welding and the material to be welded into or out of the welding machine the above-mentioned pairs of rollers must downstream and practice one continuous pressure from that then it is particularly favorable if the rollers are each on one side of the movement path are surrounded by a common pressure band, for example in the manner of an armored chain.

Sowohl den Heizbalken als auch dem Druckband bzw.Both the heating bar and the pressure belt or

den Rollen können Druckzylinder zugeordnet sein, deren Druck stufenlos bis etwa 15000 N eingestellt zu werden vermag. Dabei hat es sich als günstig erwiesen, die Steuerung der Balken oder Walzen bzw.the rollers can be assigned pressure cylinders, the pressure of which is continuously variable can be adjusted up to about 15000 N. It has proven to be beneficial the control of the bars or rollers or

Rollen an beiden Seiten der Bewegungsbahn für die Kunststoffolien getrennt zu steuern.Rollers on both sides of the movement path for the plastic films to be controlled separately.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausf2hrungsbeispiele sowie anhand der Zeichnung diese zeigt in Fig. 1: einen Schnitt durch eine skizzenhaft dargestellte Schweißpresse; Fig. 2: ein Detail der Fig. 1 in geänderter Ausführungsform.Further advantages, features and details of the invention result can be derived from the following description of preferred exemplary embodiments and based on the drawing shows this in FIG. 1: a section through a sketched one Welding press; FIG. 2: a detail of FIG. 1 in a modified embodiment.

Eine Schweißpresse B weist in einem Gehäuse 1 einen Durchlaufschlitz 2 für Kunststoffbahnen T auf, beispielsweise für mit Teflon beschichtete Glasbahnen.A welding press B has a passage slot in a housing 1 2 for plastic sheets T, for example for glass sheets coated with Teflon.

Die für den Arbeitsablauf efforderliche Fahrbühne für die Kunststoffbahnen T und die Gleisanlage sind in der Zeichnung übersichtlichkeitshalber vernachlässigt.The mobile platform for the plastic sheets required for the work process T and the track system are neglected in the drawing for the sake of clarity.

Beidseits des Durchlaufschlitses 2 sind heizbare Druckplatten oder Heizbalken 3, 4 qgebracht, welche mittels Tragarmen 5 an Querarinen 10 befestigt sind.On both sides of the pass-through slot 2 are heatable printing plates or Heating bars 3, 4 q brought, which are attached to Querarinen 10 by means of support arms 5 are.

Beidseits der Druckplatten 3, 4 sind in Fig. 1 Walzenpaare 7 mit integrierten Temperaturelementen 8 angeordnet, welche die Kunststoffbahnen T vorwärmen oder nachkühlen können. Gleichzeitig sollen diese Walzenpaare 7 auf die Bahnen T einen kontinuierlichen Druck ausüben, um eine für die Kontaktwärme-chwei8ung wänschenswerte Pressung zu erreichen und die zu schweißenden Eahnen T in die bzw. aus der Schweißpresse @ zu führen. Die Temperaturelemente 8, beispielzweise Kühlschlangen, führen ein Kühlmedium -- Luft, Wasser ed, dgl. -- gegebenenfalls auch ein Heizmedium über die Bahnen T.On both sides of the printing plates 3, 4, roller pairs 7 are integrated in FIG Arranged temperature elements 8, which preheat the plastic webs T or after-cool can. At the same time, these pairs of rollers 7 should be continuous on the webs T Apply pressure to one for contact heat weld desirable To achieve pressing and the Eahnen T to be welded in or out of the welding press @ respectively. The temperature elements 8, for example cooling coils, introduce Cooling medium - air, water ed, the like - optionally also a heating medium via the Lanes T.

Erreicht eine Naht N -- in der Zeichnung als Quernaht dargestellt, üblicherweise jedoch als Längenaht in Zugrichtung @ verlaufen -- den Durchlaufschlitz 2, führen Druckstempel @ jene Druckplatten oder Heizbalken 2, 3 unter Verringerung des Abstandes @ zusammen. Letzterer ist in der Zeichnung überhöht dargestellt und kann bis auf 0,05 mm verringert werden.If a seam reaches N - shown in the drawing as a cross seam, Usually, however, run as a longitudinal seam in the direction of pull @ - the pass-through slot 2, die @ those printing plates or heating bars 2, 3 guide under reduction of the distance @ together. The latter is shown exaggerated in the drawing and can be reduced to 0.05 mm.

Die Bahnen T werden durch Kontaktwärme von beispielsweise 350° bis 500° C unter hohem Druck (z. B. etwa 15000 N) verschweißt sowie anscließend zwischen den inneren Druckwalzen 7m nahgekühlt. Hierbei sind die Walzen auf einer Seite der Bewegungsbabn für die Kunststoffbahn T von einem Druckband D umfangen.The webs T are by contact heat of, for example, 350 ° to 500 ° C welded under high pressure (e.g. about 15000 N) and then between the inner pressure rollers 7m close-cooled. Here the rollers are on one side of the A pressure band D encircles the movement belt for the plastic web T.

Bei dem Ausführungsbeispiel der Fig. 2 zind in Zugrichtung x den Heizbalken 3, 4 Kchlplatten 21, 22 nachgeschaltet; die Walzen 7 dienen hier lediglich der Bahnführung und einer zusätzlichen Pressung, nicht aber zur Köhlung. Sie sind an Federelementen 20 nachgebend gelagert.In the embodiment of FIG. 2, the heating bar is zind in the pulling direction x 3, 4 kitchen plates 21, 22 connected downstream; the rollers 7 are used here only to guide the web and an additional pressing, but not for charring. You are on spring elements 20 stored yielding.

Die Querarme 10 sind in Lagern 6 drehbar, die Drehachse ist mit A bezeichnet. An dem jenen Tragarmen 5 fernen Ende der Querarme 10 sind Elektroden P, M mittels jeweils eines Drehgelonkes F angebracht und außer Gebrauch in die in Fig. 1 gestrichelt dargestellte Lage klappbar. Will man nun statt der Teflon-Glas-Eahn T oder einer Plane aus entsprechendem Werkstoff andere Kunststoffbahnen verschweißen, werden die Querarme 10 um die Achse A gedrcht und gleichzeitig die Druckplatten 3, 4 -- unter Verringerung des Abstandes e -- an ihren Querarm 10 herangezegen. Nierzu dient eine bei Q dargestellte @ubvorrichtung.The transverse arms 10 are rotatable in bearings 6, the axis of rotation is marked A designated. On that support arm 5 far end of cross arms 10 electrodes P, M are each attached by means of a rotary gelon F and are out of use can be folded into the position shown in dashed lines in FIG. 1. Do you want to instead of the Teflon-Glas-Eahn T or a tarpaulin made of an appropriate material, other plastic sheets weld, the transverse arms 10 are rotated about the axis A and at the same time the Pressure plates 3, 4 - while reducing the distance e - approaching their cross arm 10. A sub-device shown at Q is also used.

Liegen die Elektroden P, M im Bereich des Durchlaufschlitzes 2, schwenkt man sie in ihre Gebrauch@lage, welche obenfalls aus Fig. 1 ersichtlich, jedoch oberhalb der inneren Walsenpaare 7i dargestellt ist Bie Anschlüsse Y, Z für einen Generator G sind nur symbolisch angedeutet, Röhrenbestückung, O@zillator, Gleichrichter, Schalter u. dgl. vernachlässigt.If the electrodes P, M are in the area of the passage slot 2, it pivots they are in their use @ position, which can be seen above from Fig. 1, but above the inner Walsenpaare 7i is shown Bie connections Y, Z for a generator G are only indicated symbolically, tube assembly, oscillator, rectifier, switch and the like neglected.

Claims (15)

P A T E N T A N S P R Ü C H E 1. Kunststoff-Schweißpresse zum Kontaktwärme-Schweißen von Kunststoffbahnen mit wenigstens einem beidseits der Bewegungsbahn der Kunststoffbahnen und zu diesen etwa parallel angebrachten Heizbalkenpaar od. dgl., dessen Heizbalken unter Druck gegeneinander führbar gelagert sind, dadurch gekennzeichnet, daß die Heizbalken (3,4) durch einander gegenUberliegende, an einen Generator (G) angeschlossene Elektroden (P,M) austauschbar angeordnet sind und die Schweißpresse (B) ein-Gehäuse (1) mit einem Durchlaufschlltz (2) ftir die Kunststoffbahnen (T) aufweist. P A T E N T A N S P R Ü C H E 1. Plastic welding press for contact heat welding of plastic webs with at least one on both sides of the path of movement of the plastic webs and to this approximately parallel pair of heating bars or the like, whose heating bars are mounted feasible against one another under pressure, characterized in that the Heating bars (3, 4) by opposing one another and connected to a generator (G) Electrodes (P, M) are arranged interchangeably and the welding press (B) has a housing (1) with a pass-through protection (2) for the plastic webs (T). 2. Schweißpresse nach Anspruch 1, dadurch gekennzeichnet, daß die Elektroden (P,) mit ihren GeneratoranschlUssen (Y,Z) in der Scheißpresse (B) bewegb bar angebracht sind. 2. Welding press according to claim 1, characterized in that the Electrodes (P,) with their generator connections (Y, Z) can be moved in the welding press (B) are attached to the bar. 3. ßchweißpresse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Heizbalken (3,4) und die Elektroden (P,M) um eine Achse (A) drehbar angebracht sind. 3. welding press according to claim 1 or 2, characterized in that that the heating bars (3, 4) and the electrodes (P, M) are mounted rotatably about an axis (A) are. 4. Schweißpresse nach einem der Ansprüche t bis 3, dadurch gekennzeichnet, daß Heizbalken (3,4) und Elektroden (P,M) an einem drehbar gelagerten Querbalken (10) od. dgl. angebracht und gegenüber diesem schwenkbar und/oder anhebbar bzw.4. Welding press according to one of claims t to 3, characterized in that that heating bars (3, 4) and electrodes (P, M) on a rotatably mounted crossbeam (10) or the like attached and pivotable and / or liftable or senkbar sind. are lowerable. 5. Schweißpresse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß dem Schweißbereich (2) eine Kühlstrecke t7121,22) nachgeschaltet ist.5. Welding press according to one of claims 1 to 4, characterized in that that the welding area (2) is followed by a cooling section t7121,22). 6. Schweißpresse nach Anspruch 5, dadurch gekennzeichnet, daß die Kühistrecke entsprechend den Heizbalken (3,4) ausgebildete Kühlbalken (21,22) aufweist.6. Welding press according to claim 5, characterized in that the Cooling section has cooling bars (21, 22) designed in accordance with the heating bars (3, 4). 7. Schweißpresse nach Anspruch 5, dadurch gekennzeichnet, daß die Kühlstrecke Walsan- oder Rollenpaare (7m) aufweist, welche von Kühlmittel durchflossen und gegen die Kunststoffbahnen (T) führbar ausgebildet sind.7. Welding press according to claim 5, characterized in that the Has cooling section Walsan or roller pairs (7m) through which coolant flows and are designed to be guided against the plastic webs (T). 8. Schweißpresse nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß die Heizbalken (3,4) und die Kühlstrecke/n (7ß21,22) synchron fahrbar gesteuert sind.8. Welding press according to one of claims 5 to 7, characterized in that that the heating bar (3,4) and the cooling section / s (7ß21,22) controlled synchronously mobile are. 9. Schweißpresse nach wenigstens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß dem Schweißbereich (2) eine Vorwrmstracke (7) vorgeschaltet ist.9. Welding press according to at least one of claims 1 to 8, characterized characterized in that the welding area (2) is preceded by a preheating path (7) is. 10. Schweißpresse nach Anspruch 9, dadurch gekennzeichnet, daß die Vorwärmetrecke (7) von mehreren heizbaren Rollen oder Walzenpaaren (7) gebildet ist.10. Welding press according to claim 9, characterized in that the Preheating section (7) formed by several heatable rollers or pairs of rollers (7) is. 11. Schweißpresse nach Anspruch 8 oder 10, dadurch gekennzeichnet, daß die Rollen oder Walzen der Paare (7) jeweils beidseits der Bewegungsbahn angeordnet und die Rollen oder Walzen einer Seite von einen gemeinsamen Druckband (D) od, dgl. umfangen sind.11. Welding press according to claim 8 or 10, characterized in that that the rollers or cylinders of the pairs (7) are arranged on both sides of the movement path and the rollers or rollers on one side of a common printing belt (D) or the like. are embraced. 12. Schweißpresse nach wenigstens einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß dem Schweißbereich (2) federnd aufgehängte Druckwalzen (7 vor- oder nachgeschaltet sind.12. Welding press according to at least one of claims 1 to 11, characterized characterized in that the welding area (2) resiliently suspended pressure rollers (7 in front of or downstream. 13. Schweißpresse nach wenigstens einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß jedem Heizbalken (3,4) ein Druckzylinder (S) cd. dgl. zugeordnet und der Druck stufenlos bis etwa 15000 N einstellbar ist.13. Welding press according to at least one of claims 1 to 12, characterized characterized in that each heating bar (3,4) has a pressure cylinder (S) cd. Like. Associated and the pressure is continuously adjustable up to about 15000 N. 14. Sohweißpresse nach wenigstens einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß die Walzen oder Rollen (7) an einer Seite der Bewegungsbahn gegenüber jenen der anderen Seite der Bewegungsbahn getrennt steuerbar sind.14. Sohweißpresse according to at least one of claims 1 to 13, characterized characterized in that the rollers or rollers (7) on one side of the movement path can be controlled separately from those on the other side of the trajectory. 15. Schweißpresse nach wenigstens einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß den Heizbalken (3,4) Temperaturfühler für eine Außen-Steuerung zugeordnet sind.15. Welding press according to at least one of claims 1 to 14, characterized characterized in that the heating bar (3,4) temperature sensor for an external control assigned.
DE19782852885 1978-12-07 1978-12-07 Universal welder for thermoplastics - has arms fitted with heated plates and high-frequency electrodes for application as required Withdrawn DE2852885A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19782852885 DE2852885A1 (en) 1978-12-07 1978-12-07 Universal welder for thermoplastics - has arms fitted with heated plates and high-frequency electrodes for application as required
EP79710013A EP0013533A2 (en) 1978-12-07 1979-12-07 Apparatus and method for welding thermoplastic sheets
DE19803045811 DE3045811A1 (en) 1978-12-07 1980-12-05 Welding plastics sheets together - machine uses platens or electrodes and locates sheets together with welded PVC pins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782852885 DE2852885A1 (en) 1978-12-07 1978-12-07 Universal welder for thermoplastics - has arms fitted with heated plates and high-frequency electrodes for application as required

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DE2852885A1 true DE2852885A1 (en) 1980-06-26

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DE19782852885 Withdrawn DE2852885A1 (en) 1978-12-07 1978-12-07 Universal welder for thermoplastics - has arms fitted with heated plates and high-frequency electrodes for application as required

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DE (1) DE2852885A1 (en)

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