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DE7032766U - ELECTRICALLY HEATED WELDING JAW. - Google Patents

ELECTRICALLY HEATED WELDING JAW.

Info

Publication number
DE7032766U
DE7032766U DE7032766U DE7032766U DE7032766U DE 7032766 U DE7032766 U DE 7032766U DE 7032766 U DE7032766 U DE 7032766U DE 7032766 U DE7032766 U DE 7032766U DE 7032766 U DE7032766 U DE 7032766U
Authority
DE
Germany
Prior art keywords
contact element
welding jaw
welding
welded
pliable
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.)
Expired
Application number
DE7032766U
Other languages
German (de)
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.)
INST BELGE de l EMBALLAGE
Original Assignee
INST BELGE de l EMBALLAGE
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 INST BELGE de l EMBALLAGE filed Critical INST BELGE de l EMBALLAGE
Publication of DE7032766U publication Critical patent/DE7032766U/en
Expired 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
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • 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
    • B29C66/01—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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • B29C66/1352—Single hem to hem 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
    • B29C66/431—Joining the articles to themselves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • 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
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81419—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81422—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave

Landscapes

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

Description

Die Neuerung bezieht sich auf eine elektrisch beheizte Schweißbacke mit einem beheizten Kontaktelement zum Anlegen an das zu verschweißende Material.The innovation relates to an electrically heated one Welding jaw with a heated contact element for contact to the material to be welded.

Bekannte elektrische Schweißbacken haben aus Metall oder einem steifen Material bestehende, an das zu verschweißende Material anlegbare Kontaktelemente, bei denen aufgrund ihrer Festigkeit beim Schweißen keinerlei Verformung eintritt. Derartige Ausführungen von Schweißbacken haben verschiedene Nachteile:Known electrical welding jaws made of metal or a rigid material have to be welded to the Material contact elements that can be applied and that, due to their strength, do not deform during welding entry. Such designs of welding jaws have various disadvantages:

Zunächst müssen solche Backen sorgfältig bearbeitet und ausgerichtet sein, damit sie unter gleichmäßigem Druck über die gesamte Läntre der Schweißnaht anlegbar sind.First of all, such jaws must be carefully machined and aligned so that they are under even pressure Can be applied over the entire length of the weld seam.

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Selbst dann ist es jedoch schwierig, eine perfekte Schweißnaht herzustellen, wenn das zu schweißende Material, beispielsweise durch Unebenheiten, während der Herstellung beim Strangpressen entstandene, qusrüsufesSs Diofcensciiwankungen aufweist. Mit solchen Schweißbacken sind auch keine befriedigenden Schweißnähte erzielbar, wenn der zu schweißende Gegenstand örtliche Änderungen der Dicke aufweist, was beispielsweise durch das Ubereinanderlegen mehrerer Schichten des zu schweißenden Materials leicht auftritt, wie es bei der Herstellung von Beuteln mit mehrfach gefalteten Böden der Fall ist. Derartige Verdickungen können auch durch körnige Fremdkörper hervorgerufen sein, die eich dann unter dem Druck der Backe in das wärmeschweißbare Material einbetten und dabei örtliche Beschädigungen hervorrufen, die den Beutel dann undicht machen.Even then, however, it is difficult to produce a perfect weld, if the material to be welded is, for example Fluctuations in the production process caused by unevenness during the extrusion process having. With such welding jaws, no satisfactory weld seams can be achieved either if the one to be welded Object has local changes in thickness, for example by laying several Layers of the material to be welded easily occurs, as is the case in the manufacture of bags with multiple folds Floors is the case. Such thickenings can also be caused by granular foreign bodies that Then, under the pressure of the jaw, embed it in the heat-weldable material and damage it locally cause the bag to leak.

Der Neuerung liegt die Aufgabe zugrunde, eine Schweißbacke anzugeben, mit der diese Nachteile beseitigt werden und die gleichzeitig für weitere Verwendungen in der elektrischen Schweißtechnik geeignet ist.The innovation is based on the task of specifying a welding jaw with which these disadvantages are eliminated and which is also suitable for other uses in electrical welding technology.

Diese Aufgabe wird bei einer elektrischen Schweißbacke der eingangs genannten Art neuerungsgemäß dadurch gelöst, daß das an das zu schweißende Material anlegbare Eontaktelement aus einem schmiegsamen und elastischen Material mit guter Wärmeleitfähigkeit besteht.In an electric welding jaw of the type mentioned at the outset, this object is achieved according to the invention in that the contact element that can be placed against the material to be welded is made of a pliable and elastic material with good There is thermal conductivity.

Der Neuerung liegt die Erkenntnis zugrunde, daß sich eine derartige Schweißbacke im Betrieb an die zu verschweißenden Flächen gegebenenfalls auftretende Dickenänderungen anzupassen vermag und. dabei einen über die gesamte Länge gleichmäßig verteilten Druck ausübt.The innovation is based on the knowledge that such a welding jaw attaches to the welding jaw during operation Any changes in thickness that may occur able to adapt and. thereby exerts a pressure evenly distributed over the entire length.

Das Kontaktelement ist vorteilhafterweise aus einem Material gefertigt, das Temperaturen im Bereich von 2500C und darüber standhält. Neuerung?gemäß ist das Kontaktelement vorzugsweise aus einera Material auf Elastomerbasis hergestellt.The contact element is advantageously made from a material that withstands temperatures in the range of 250 ° C. and above. According to the innovation, the contact element is preferably made of an elastomer-based material.

Die ηeuerungfgemäße Schweißbacke enthält vorzugsweise eine starre Halterung für das aus schmiegsamen und elastischem Material bestehende Kontaktelement, welches teilweise in eine Nut pLer Halterung -eingepaßt ist und eine aus der Halterung hervorstehende Fläche zur Anlage an das zu schweißende Material aufweist.The welding cheek according to the invention preferably contains a rigid holder for the contact element made of pliable and elastic material, which is partially fitted into a groove pLer bracket and has a surface protruding from the holder for contact with the material to be welded.

Zusätzlich zu den bekannten Anwendungsarten, wie dem elektrischen Verschweißen von wärmeschweißbaren Werkstoffen bei der Herstellung von Beuteln. Tüten und anderen Verpackungen bieten die neuerungsgemäßen Schweißbacken weitere Anwendungsmöglichkeiten. Eine solche vortenlhafte Anwendungsmöglichkeit besteht darin, daß zwischen die aus wärmeschweißbarem Material gebildeten Folien beim Einlegen zwischen die Schweißbacken wenigstens ein Fremdkörper eingesetzt wird. Je nach dem angestrebten Ziel kann der Fremdkörper ein in die Schweißnaht einzubettender oder einzuschließender Körper sein, oder beispielsweise dazu bestimmt sein, nach dem Schweißen entfernt zu werden, so daß in der Schweißnaht ein Durchlaß gebildet wird.In addition to the known types of application, such as electrical welding of heat-weldable materials in the manufacture of bags. The new sealing jaws offer bags and other packaging further application possibilities. One such advantageous application is that between the foils formed from heat-weldable material when inserted between the welding jaws at least a foreign body is inserted. Depending on the desired goal, the foreign body can get into the weld seam body to be embedded or enclosed, or, for example, intended to be after welding to be removed so that a passage is formed in the weld.

Weitere Vorteile und Merkmale der Neuerung ergeben sich aus der folgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnung.Further advantages and features of the innovation emerge from the following description of exemplary embodiments based on the drawing.

Fig. 1 eine schematisierte, teilweise im Schnitt dargestellte Schrägansicht einer elektrischen Schweißvorrichtung mit den neuerungsgeraäßen Schweißbacken,Fig. 1 is a schematic, partially in section shown oblique view of an electrical welding device with the new equipment Welding jaws,

Pig. 2 eine schematisierte Seitenansicht der einander angenäherten Schweißbacken der Vorrichtung nach Fig. 1, mit einem in der Berührungslinie der Backen mit dem zu verschweißenden Material geführten Längsschnitt,Pig. 2 is a schematic side view of the welding jaws of the device which are approached to one another according to Fig. 1, with one in the line of contact of the jaws with the one to be welded Material guided longitudinal cut,

Fig. 3 bis 5 neuerungsgemäße elektrische Schweißbacken in verschiedenen Ausführungsbeispielen und3 to 5 electric welding jaws according to the innovation in various embodiments and

Fig. 6 eine Darstellung einer Anwendungsmöglichkeit der neuerungsgemäßen Schweißbacken.6 shows an illustration of a possible application the welding jaws according to the innovation.

In den verschiedenen Figuren bezeichnen gleiche Bezugszeichen gleiche oder entsprechende Teile.In the various figures, the same reference symbols designate the same or corresponding parts.

Die in Fig. 1 dargestellte elektrische Schweißvorrichtung dient zur Herstellung von Beuteln, Tüten und dergl., insbesondere solchen mit mehrfach eingefalteten Böden, durch Verschweißen von Folien 1 aus einem wärmeschweißbaren Material, sowie solchem Schichtmaterial, welches eine auf einer Seite mit einem wärmeschweißbaren Material beschichtete Folie aus nicht wärmeschweißbarem Material aufweist. Die Vorrichtung hat in an sich bekannter Weise ein Paar Backen 2,3 von denen die eine Backe 2 fest und die andere Backe 3 beispielsweise durch die Schubstange eines KoI-bens 14 senkrecht auf und ab bewegbar ist. Die Backen 2, 3 enthalten jeweils ein Metallteil 4- mit einer Bohrung, in die ein Heizwiderstand 5 eingesetzt ist.The electric welding device shown in FIG Used for the production of bags, sacks and the like., In particular those with multiple folded bottoms through Welding of foils 1 made of a heat-weldable material, as well as such layer material which one coated on one side with a heat-weldable material Has film made of non-heat-weldable material. The device has a pair in a manner known per se Jaws 2,3 of which one jaw 2 is fixed and the other jaw 3, for example, through the push rod of a KoI-ben 14 is vertically movable up and down. The jaws 2, 3 each contain a metal part 4- with a hole, in which a heating resistor 5 is used.

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In der der Schweißzone zugerrnrt^n Fläche hat jedes der Teile 4 eine Nut 6, in der ein ai_ das zu schweißende Material anlegbares Kontaktelement 7 eingepaßt und befestigt ist. Das Element 7 besteht aus einem schmiegsamen, elastischen und gut wärmeleitfähigen Material. Das Element 7 ist vorzugsweise durch Formpressen aus einem gegen Temperaturen von wenigstens 250° C unempfindlichen, gut wärmeleitfähigen Elastomer hergestellt. Das Profil des Elements 7 kann je nach der Breite der herzustellenden Schweißnaht, den Eigenschaften des zu schweißenden Materials, der für die Schweißnaht, beabsichtigten Form, dem anzuwendenden Druck und anderen Faktoren angepaßt sein. Fig. 3 bis 5 zeigen verschiedene Profilformen des Elements 7-In the area close to the welding zone, each of the Parts 4 a groove 6 in which ai_ the material to be welded attachable contact element 7 is fitted and fastened. The element 7 consists of a pliable, elastic material with good thermal conductivity. The element 7 is preferably made by compression molding against Insensitive to temperatures of at least 250 ° C, Good thermally conductive elastomer made. The profile of the element 7 can vary depending on the width of the Weld, the properties of the material to be welded, the shape intended for the weld, be adapted to the pressure to be applied and other factors. Fig. 3 to 5 show different profile shapes of the Elements 7-

In Abwandlung der Ausführung nach Fig. 1 kann der Heizwiderstand 5 auch in das Element 7 einbezogen sein. Um dabei eine Beeinträchtigung der elastischen Verformung des Elements beim Anlegen an das zu schweißende Material zu vermeiden, kain der Heizwiderstand aus einem in das Material des Elements eingebetteten,- schraubenförmige Windungen aufweisenden Leiter gebildet "sein.In a modification of the embodiment according to FIG. 1, the heating resistor 5 can also be included in element 7. In order to impair the elastic deformation To avoid the element when it is applied to the material to be welded, the heating resistance cannot be transferred from one to the other Material of the element embedded, - be formed helical turns having conductors ".

Das Profil des Elements 7 nach Fig. 1, 2 und 4 ist für die Herstellung von schmalen Nähten geeignet. Das eine ebene Fläche aufweisende abgeschrägte Profil nach Fig. 3 eignet sich insbesondere für das Verschweißen von Schichtmaterial mit einer geringen Menge wärmeschweißbaren Materials, bei dem daher eine breitere Schweißnaht erforderlich ist.The profile of the element 7 according to FIGS. 1, 2 and 4 is for suitable for the production of narrow seams. The beveled profile according to FIG. 3, which has a flat surface is particularly suitable for welding layered material with a small amount of heat-weldable material, which therefore requires a wider weld seam.

Die nach Art von Nut und Feder ausgeführten verschiedenen Profile der Elemente 8 und 81 der Backen nach Fig. 5 eignen sich zur Herstellung von Schweißnähten mit besonderen Eigenschaften.The different profiles of the elements 8 and 8 1 of the jaws according to FIG. 5, designed in the manner of tongue and groove, are suitable for producing weld seams with special properties.

Der-Vorteil der Anordnung von schmiegsamen und elastischen Eontakt element en 7* S in den Schweißbacken 2, Z· besteht darin, daß sie beim Zusammenpressen der Backen während des Schweißens ebenfalls zusammengepreßt werden und sich dabei derart verformen, daß sie sich dem Profil des zu schweißenden Gegenstandes ene; anpassen und einen gleichmäßig auf die ganze Fläche verteilten Anpreßdruck übertragen. Wie aus Fig. 2 ersichtlich, werden die mehrfach gefalteten Bereiche 9 ebenso wie der dazwischen liegende Bereich 10 gleichzeitig und gleichmäßig zwischen den Kontaktelementen 7 eingespannt, woduch eine durchgehend einwandfreie und daher überall : dichte Schweißnaht gewährleistet ist. The advantage of the arrangement of pliable and elastic contact elements 7 * S in the welding jaws 2, Z · is that they are also pressed together when the jaws are pressed together during welding and are deformed in such a way that they conform to the profile of the welding object ene; customize and an evenly distributed on the entire surface contact pressure transmitted. As can be seen from FIG. 2, the multiply folded areas 9 as well as the area 10 lying in between are clamped simultaneously and evenly between the contact elements 7, which ensures a continuously flawless and therefore everywhere: tight weld seam.

Mit dem geschweißten Material durchgeführte Zugversuche ergaben, daß ein Zerreißen in den meisten Fällen im eigentlichen Material stattfindet und nicht im Bereich der Schweißnaht. Wie die Praxis zeigts, bewirkte der Druck einer Flüssigkeit in einem gemäß der Erfindung zugeschweißten Beutel das Zerreißen des Materials, nicht jedoch der Schweißnähte.Tensile tests carried out on the welded material indicated that, in most cases, tearing occurs in the actual material and not in the area the weld. As practice shows, the pressure of a liquid in a bag sealed according to the invention did not cause the material to tear but the welds.

Bei sehr dünnem zu verschweißendem Material übt man gewöhnlich einen erhöhten Druck aus, um das Verrutschen des Materials zu verhindern. Der erhöhte Druck kann jedoch das Material beschädigen. Mit schmiegsamen Schweißbacken wird dieser Nachteil behoben und außerdem jede Verformung durch Wärmeeinfluß misgeschaltet.When the material to be welded is very thin, increased pressure is usually applied to prevent it from slipping of the material. However, the increased pressure can damage the material. With pliable welding jaws this disadvantage is eliminated and also every one Deformation due to the influence of heat is switched.

Selbstverständlich sind die schmiegsamen elastischen Kontaktelemente auch mit Rollen oder Bändern in Vorrichtungen für kontinuierliches Schweißen verwendbar.Of course, the pliable elastic contact elements can also be used with rollers or tapes in devices for continuous welding.

· · till· · Till

• · ι ·>ιι ti· ι · «ι• · ι ·> ιι ti · ι · «ι

;.uer solchen Verwendung ist die für den Transport . schweißenden Materials erforderliche Haftreibung die Rutschfestigkeit der schmiegsamen und elastischen Kontaktelemente zusätzlich verstärkt. ; Its use is for transportation. The static friction required for welding material increases the slip resistance of the pliable and elastic contact elements.

Fig. 6 zeigt eine besondere Anwendungsart der vorstehend beschriebenen neuerungsgemäßen Schweißbacken. Dabei sind zwischen die aus wärmeschweißbarem Material bestehenden Folien 11, 12 mehr oder weniger steige Fremdkörper 15 eingefügt. Je nachdem, ob die Fremdkörper 13 aus einem Material bestehen, an dem das die Folien 11, 12 "bildende Material anzuhaften vermag, oder nicht, werden die . Fremdkörper 13 durch das Schweißen stoff schlüssig.niit dem geschweißten Gegenstand verbunden. Aufgrund der Schmiegsamkeit der Kontaktelemente 7 gleichen sie sich beim Zusammenführen· der Backen 2, 3 dem Profil des aus den Folien 11,12 und dem Fremdkörper 13 gebildeten Gegenstandes an und bewirken damit eine gleichmäßige Verbindung an allen Berührungspunkten zwischen den Folien 11, 12 und gegebenenfalls an allaaBerührungspunkten zwischen den Folien 11, 12 und den Fremdkörpern 13.Fig. 6 shows a particular type of application of the previously described welding jaws according to the invention. Are there Foreign bodies 15 rising to a greater or lesser extent between the foils 11, 12 made of heat-weldable material inserted. Depending on whether the foreign body 13 from a Material exist to which the material forming the foils 11, 12 ″ is able to adhere, or not, the. Foreign body 13 due to the welding stoffschlüssig.niit connected to the welded object. Due to the flexibility of the contact elements 7, they are the same when bringing the jaws 2, 3 together, the profile of the object formed from the foils 11, 12 and the foreign body 13 and thus cause an even connection at all points of contact between the foils 11, 12 and possibly at all points of contact between the foils 11, 12 and the foreign bodies 13.

Aus der Beschreibung anhand der Fig. 6 ergeben sich zahlreiche Anwendungsmöglichkeiten der Neuerung. So ermöglicht der Neuerungsgegenstand den Einschluß von Hilfseinrichtungen wie Rohren, Füllschläuchen oder dgl. in die Schweißnaht oder, durch Einsetzen von nicht verschweißbaren starren Stäben während des Schweißens und nachfolgendem Entfernen derselben aus der Schweißnaht, die Ausbildung von Durchlässen in den Schweißnähten, das Einbetten irgend we Icher Teile zwischen zwei Schichten des wärmeschweißbaren Materials, das Umhüllen starrer Gegenstände mit einer Schicht wärmeschweißbaren Materials und dergl. mehr.Numerous possible applications of the innovation result from the description with reference to FIG. 6. So The innovation allows the inclusion of auxiliary equipment such as pipes, filling hoses or the like. into the weld seam or, by inserting non-weldable rigid rods during welding and subsequent removal of the same from the weld seam, the formation of passages in the weld seams, embedding some white part between two layers of the heat-weldable material, enveloping it more rigidly Articles with a layer of heat-sealable material and the like. More.

Claims (8)

• · I Schutzansprüche• · I claims for protection 1. Elektrische Schweißbacke mit -einem beheizten-Kontakt element zum Anlegen an das zu schweißende Material, dadurch gekennzeichne t , daß das an das zu schweißende Material anlegbare Kontaktelement (7) aus einem schmiegsamen und elastischen Material mit guter Wärmeleitfähigkeit besteht.1. Electric welding jaw with -one heated-contact element to be placed on the material to be welded, thereby marked t that the contact element (7) which can be placed against the material to be welded consists of a pliable and elastic material with good thermal conductivity. 2. Schweißbacke nach Anspruch 1, dadurch gekennzeichnet , daß das schmiegsame und elastische Kontaktelement (7) Widerstandsfähig gegen Temperaturen von 250° C und darüber ist.2. welding jaw according to claim 1, characterized in that the pliable and elastic contact element (7) is resistant to temperatures of 250 ° C and above. 3. Schweißbacke nach Anspruch 1 oder 2, dadurch gekennzeichnet , daß das Kontaktelement (7) aus einem Material auf Elastomerbasis gefertigt ist.3. welding jaw according to claim 1 or 2, characterized in that the contact element (7) is made of an elastomer-based material. 4. Schweißbacke nach wenigstens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das aus schmiegsamem, elastischem Material gebildete Kontaktelement (7) aus einer starren Halterung (4·) hervorragt.4. Welding jaw according to at least one of claims 1 to 3, characterized in that the one formed from pliable, elastic material Contact element (7) protrudes from a rigid holder (4). — 2 —- 2 - a · tia ti 5. Schweißbacke nach Anspruch 4, dadurch gekennzeichnet , daß die starre Halterung (M-) eine mit aufweist, in die das aus sehiaiegsanieia und elastischem Material bestehende Kontaktelement eingesetzt i^ b.5. welding jaw according to claim 4, characterized in that the rigid holder (M-) has one with, into which the contact element consisting of sehiaiegsanieia and elastic material is inserted i ^ b. ■ ■ 6. Schweißbacke nach wenigstens einem der Ansprüche 16. Welding jaw according to at least one of claims 1 bis 5» dadurch gekennzeichnet,up to 5 »characterized by „ daß in das aus schmiegsamem und elastisches Material"That in the one made of supple and elastic material 2 gebildete Kontaklielement (7, 8, 81) ein elektrischer2 formed contact element (7, 8, 8 1 ) an electrical I Heizwiderstand (5) eingesetzt ist.I heating resistor (5) is inserted. I . I. 7· Schweißbacke nach Anspruch 6, dadurch g e -7 welding jaw according to claim 6, characterized in that - Vj kennzeichnet, daß der elektrische Heiz-Vj indicates that the electrical heating Ii widerstand (5)_ in Form eines in °.chxaubenwindungenIi resistance (5) _ in the form of an in °. chxa windings 1 angeordneten Leiters in dem aus schmiegsamem und1 arranged conductor in which made of pliable and 1 . elastischem Material bestehenden Kontaktelement (7)1 . elastic material existing contact element (7) % eingebettet ist. % is embedded. I I. 8. Schweißbacke nach wenigstens einem der Ansprüche 58. welding jaw according to at least one of claims 5 I bis 7» dadurch gekennzeichnet,I to 7 »characterized by 'A daß das aus schmiegsamem und elastischem Material 'A that it is made of supple and elastic material I bestehende Kontaktelement (7, 8) ein in der Nut derI existing contact element (7, 8) in the groove of the Halterung gefaßtes und ein aus der Halterung (^) her-Holder and one out of the holder (^) I vorstehendes, an das zu schweißende Material anlegI apply the above to the material to be welded bares Teil aufweist.has bares part.
DE7032766U 1969-09-04 1970-09-02 ELECTRICALLY HEATED WELDING JAW. Expired DE7032766U (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE78709 1969-09-04

Publications (1)

Publication Number Publication Date
DE7032766U true DE7032766U (en) 1971-01-14

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DE7032766U Expired DE7032766U (en) 1969-09-04 1970-09-02 ELECTRICALLY HEATED WELDING JAW.

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BE (1) BE738422A (en)
DE (1) DE7032766U (en)
FR (1) FR2060882A5 (en)
LU (1) LU61629A1 (en)
NL (1) NL7013074A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008039158A1 (en) * 2008-08-21 2010-03-04 Multivac Sepp Haggenmüller Gmbh & Co. Kg Chamber machine for sealing filled film bags has a sealing rail of a flexible plastics, which can be shaped and reshaped repeatedly for the bag designs
WO2016120466A3 (en) * 2015-01-30 2016-11-24 Chocal Aluminiumverpackungen Gmbh Method for manufacturing packaging

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008039158A1 (en) * 2008-08-21 2010-03-04 Multivac Sepp Haggenmüller Gmbh & Co. Kg Chamber machine for sealing filled film bags has a sealing rail of a flexible plastics, which can be shaped and reshaped repeatedly for the bag designs
DE102008039158B4 (en) * 2008-08-21 2014-06-12 Multivac Sepp Haggenmüller Gmbh & Co. Kg Device for sealing packages
WO2016120466A3 (en) * 2015-01-30 2016-11-24 Chocal Aluminiumverpackungen Gmbh Method for manufacturing packaging
EP3250469B1 (en) * 2015-01-30 2020-03-11 Chocal Aluminiumverpackungen GmbH Method for manufacturing packaging

Also Published As

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LU61629A1 (en) 1970-12-01
FR2060882A5 (en) 1971-06-18
BE738422A (en) 1970-02-16
NL7013074A (en) 1971-03-08

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