DE1869976U - DEVICE FOR SEALING PACKAGES MADE OF WELDABLE PLASTIC FILM. - Google Patents

DEVICE FOR SEALING PACKAGES MADE OF WELDABLE PLASTIC FILM.

Info

Publication number
DE1869976U
DE1869976U DEH36796U DEH0036796U DE1869976U DE 1869976 U DE1869976 U DE 1869976U DE H36796 U DEH36796 U DE H36796U DE H0036796 U DEH0036796 U DE H0036796U DE 1869976 U DE1869976 U DE 1869976U
Authority
DE
Germany
Prior art keywords
compressed air
plastic film
air outlet
outlet openings
jaws
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
DEH36796U
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.)
OTTO HAENSEL JUNIOR GmbH
Original Assignee
OTTO HAENSEL JUNIOR 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 OTTO HAENSEL JUNIOR GmbH filed Critical OTTO HAENSEL JUNIOR GmbH
Priority to DEH36796U priority Critical patent/DE1869976U/en
Publication of DE1869976U publication Critical patent/DE1869976U/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B65B51/20—Applying or generating heat or pressure or combinations thereof by fluid pressure acting directly on folds or on opposed surfaces, e.g. using hot-air jets
    • 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
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • 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
    • B29C66/349—Cooling the welding zone on the welding spot
    • 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
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • 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
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B29C66/43122—Closing the top of gable top containers
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91431—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being kept constant over time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91641—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time
    • 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
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • 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
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7162—Boxes, cartons, cases
    • B29L2031/7166—Cartons of the fruit juice or milk type, i.e. containers of polygonal cross sections formed by folding blanks into a tubular body with end-closing or contents-supporting elements, e.g. gable type containers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

Vorrichtung zum Verschliessen von Packungen aus schweissbarer KunststoffolieDevice for closing packs made of weldable plastic film

Die Erfindung betrifft eine Vorrichtung zum Verschliessen von Packungen aus schweissbarer Kunststoffolie. Mit besonderem Vorteil soll die Neuerung beim Verschliessen von Packungen für Lebens- und Genussmittel Anwendung finden. Bisher hat man bereits Kunststoffolien verschweisst, indem man im Bereich der Schweisstelle hochfrequente elektrische Ströme benutzte, um das Material der Folien zusammenfliessen zu lassen. Man hat auch Schweissungen ausgeführt, indem man die zu verschweissenden Materialien zwischen entsprechend hocherhitzten Schweisswerkzeugen miteinander verpresste. Alle diese Verfahren haben den Nachteil, dass sie relativ zeitraubend sind und dass sich die bei der Verschweissung aufgewendete Wärme leicht auf die zu verpackenden Nahrungs- und Genussmittel auswirkte, die dadurch beschädigt oder unansehnlich wurden.The invention relates to a device for closing packs made of weldable plastic film. With a particular advantage the innovation is intended to be used for the sealing of packs for food and luxury goods. So far you already have Plastic foils are welded by using high-frequency electrical currents in the area of the welding point to Allow material of the foils to flow together. Welds have also been carried out by cutting those to be welded Materials between correspondingly highly heated welding tools pressed together. All of these methods have the disadvantage that they are relatively time consuming and that they are the heat used during the welding had a slight effect on the food and luxury goods to be packaged damaged or unsightly as a result.

Durch die Erfindung werden die Mängel der bekannten Schweissverfahren und Schweissvorricutungen behoben, indem erfindungs-The invention eliminates the shortcomings of the known welding processes and welding fixtures by inventing

81a, 6/01. 1869976: Otto Hansel Junior G.m.b.H., Hannover.' | Vorrichtung zum Verschließen von Packungen aus schweißbarer KimststnSoiie. 8. 12. 60. H 36796. (T. X Z. 9 ' - ■ 81a, 6/01. 1869976: Otto Hansel Junior GmbH, Hanover. ' | Device for closing packs made of weldable KimstnSoiie. 8. 12. 60. H 36796. (T. X Z. 9 '- ■

gemäss die Verschweissung mittels erhitzter Druckluft bei anscliliessender Abkühlung erfolgt. Vorzugsweise werden die Folien im Bereich der Schweisstelle gegeneinandergerichteten heissen Druckluftströmen ausgesetzt. Anschliessend kann die Schweissstelle durch Anwendung kalter Druckluftströme wieder gekühlt werden. Dabei ist es sogar möglich, kontinuierlich zu arbeiten.according to the welding by means of heated compressed air when connecting Cooling takes place. The foils are preferably hot in the area of the weld point facing one another Exposed to currents of compressed air. Then the welding point can can be cooled again by applying cold compressed air flows. It is even possible to work continuously.

Die Vorrichtung zur Durchführung dieses neuen Verfahrens kennzeichnet sich im wesentlichen durch die zu verschweissenden Folien zwischen sich erfassende Werkzeuge, die auf den einander zugekehrten Seiten Luftaustrittsöffnungen aufweisen und über ein Schaltventil mit einem Drucklufterzeuger und einem Drucklufterhitzer derart verbunden sind, dass nach dem Einbringen der Folien zwischen die Werkzeuge zunächst gegeneinandergerichtete heisse Druckluftströme auf die Schweisstelle geblasen werden und nach erfolgter Verschweissung ein Umschalten auf Kaltluft erfolgt, um die Schweisstelle zu kühlen und zu härten.The device for performing this new method is identified essentially through the foils to be welded between them gripping tools that are on each other facing sides have air outlet openings and Via a switching valve with a compressed air generator and a compressed air heater are connected in such a way that, after the foils have been introduced between the tools, they are initially directed towards one another hot streams of compressed air are blown onto the welding point and after the welding has taken place, switching to cold air takes place in order to cool and harden the welding point.

Vorzugsweise lassen sich auf- und abgehende oder rotierende Werkzeuge verwenden, die die Folien zwischen sich erfassen und sich um die Druckluftaustrittsöffnungen herum dichtend aufeinander bzw. auf die Folien legen. Ausserdem werden die Y/erkzeuge um die Druckluftaustrittsöffnungen herum zweckmässig gekühlt, so daß eine Wärmebestrahlung auf den Packungsinhalt vermieden ist.Up and down or rotating tools can preferably be used, which grasp the foils between them and seal against each other around the compressed air outlet openings or place on the foils. In addition, the Y / tools are appropriately cooled around the compressed air outlet openings, see above that heat radiation on the package contents is avoided.

j 81a, 6/01. 186997k Otto Hansel Junior Gjn.b.H., Hannover. | Vorrichtung zum Verschließen von Packungen aus schweißbarer Kunststoffolie. 8. 12. 60. H 36796. (T.g; 7-9 j 81a, 6/01. 186997k Otto Hansel Junior Gjn.bH, Hanover. | Device for closing packs made of weldable plastic film. 8. 12. 60. H 36796. (Tg; 7-9

Für die Ausbildung der Werkzeuge bestehen die verschiedensten Möglichkeiten. In der beiliegenden Zeichnung sind einige AusführungsUormen wiedergegeben, und zwar zeigen:There are various possibilities for the formation of the tools. Some design standards are shown in the accompanying drawing, namely:

Fig. 1 eine schematische Darstellung der gesamten Anlage; Pig. 2 und 3 schematische Darstellungen der Schweiss-1 shows a schematic representation of the entire system; Pig. 2 and 3 schematic representations of the welding

vorrichtung bei verschiedener Stellung der Schweiss-device with different positions of the welding

werkzeuge;
Fig. 4 eine Seitenansicht der Schweisswerkzeuge in dertools;
FIG. 4 is a side view of the welding tools in FIG

Stellung gemäss Fig. 3, teilweise im Schnitt; Fig. 5 eine Draufsicht auf ein Schweisswerkzeug, teilweisePosition according to FIG. 3, partly in section; 5 shows a plan view of a welding tool, partially

im Schnitt;
Fig. 6 und 7 ähnliche Darstellungen wie Fig. 2 und 3 beion average;
FIGS. 6 and 7 show similar representations as FIGS. 2 and 3 at

anderer Ausführung der Schweisswerkzeuge und Fig. 8 und 9 eine Seitenansicht bzw. eine Draufsicht aufAnother embodiment of the welding tools and FIGS. 8 and 9 show a side view and a plan view

die Schweisswerkzeuge gemäss Fig. 6 und 7, teilweisethe welding tools according to FIGS. 6 and 7, partially

im Schnitt.on average.

Die Verschweissung der eine Packung 1 einhüllenden Folien 2 erfolgt zwischen aufeinanderzubeweglichen Schweissbacken 3» die je über eine Druckluftleitung 4 an einen gemeinsamen Verteiler 5 angeschlossen sind. Die Leitungen 4 bestehen aus einem beweglichen Schlauch, der die Bewegungen der Backen 3 mitmachen kann. Andererseits ist es aber auch möglich, für die Durchführung kontinuierlicher Schweissnähte aufeinander abrollende Schweisswerkzeuge zu verwenden.The foils 2 enveloping a pack 1 are welded together between mutually movable welding jaws 3 »each Via a compressed air line 4 to a common distributor 5 are connected. The lines 4 consist of a flexible hose that can follow the movements of the jaws 3. On the other hand, however, it is also possible to use welding tools that roll over one another for the implementation of continuous weld seams to use.

81a, 6/01. 186997& Otto Hansel Junior G.m.b.H., Hannover. | Vorrichtung zum Verschließen von Packungen aus schweißbarer Kunststoffolie. 8. 12. €0. H 36796. (T. & 7. S 81a, 6/01. 186997 & Otto Hansel Junior GmbH, Hanover. | Device for closing packs made of weldable plastic film. 8 December € 0. H 36796. (T. & 7. S.

Das Verteilerstück 5 steht über eine Kaltluftleitung 6 mit einem Kaltluftregelventil 7 und über eine Leitung 8 mit einem Dreiwegeventil 9 in Verbindung, welches seinerseits einen Heissluftaustritt 10 aufweist und über eine Leitung 11 an einen Heizkörper bzw. an eine Heizkammer 12 angeschlossen ist. Ein in die Leitung 11 eingeschalteter Thermostat 13 steuert die Heiztemperatur auf eine bestimmte Höhe ein. Das Regelventil 7 und die Heizkammer sind über ein gemeinsames Anschlusstück 14 an eine Druckluftzuleitung 15 angeschlossen, in v/elcher ein Reduzierventil 16 und ein V/asserabscheider 17 sitzen. Über die Leitung 18 erfolgt die Beschickung der Anlage von einem nicht dargestellten Drucklufterzeuger aus mit Druckluft von etwa 4 bis 6 atü.The distributor piece 5 is via a cold air line 6 with a cold air control valve 7 and a line 8 with a three-way valve 9 in connection, which in turn has a hot air outlet 10 and is connected via a line 11 to a radiator or to a heating chamber 12. One on the line 11 switched on thermostat 13 controls the heating temperature to a certain level. The control valve 7 and the heating chamber are via a common connection piece 14 to a compressed air supply line 15 connected, in v / elcher a reducing valve 16 and a water separator 17 sit. The line 18 takes place The system is fed from a compressed air generator (not shown) with compressed air of about 4 to 6 atmospheres.

Die Schaltung der Anlage ist so getroffen, dass beim Aufsetzen der Schweissbacken 3 auf die Folie bzw. aufeinander zunächst über das Dreiwegeventil 9 ein Heissluftstrom über jede der beiden Backen abgegeben wird. Die Druckluft wird in dem Heizkörper etwa auf bis 300% erhitzt. Diese Temperatur reicht aus, um die Verschweißung der Kunststoffolien, beispielsweise Zellglas, Polyäthylen, Polypropylen oder ähnliches zu bewirken. Durch den Druck der Luft erfolgt das Zusammenpressen der Folien im Bereich der Schweissstelle. Unmittelbar nach der Verschweissung erfolgt ein Umschalten des Dreiwegeventils 9 in der Weise, dass die Heissluft aus dem Austritt 10 abgeblasen und über das Regelventil 7 Kaltluft nach den Backen 3 geführt wird. Die aufeinandergerichteten Kaltluftströme kühlen die Schweisstelle schieLlstens ab, so dass der ganze Schweissvorgang in kürzester Zeit beendet ist.The system is switched in such a way that when the Welding jaws 3 on the film or on top of one another, initially via the three-way valve 9, a stream of hot air over each of the two jaws is delivered. The compressed air is heated in the radiator to around 300%. This temperature is sufficient for the weld to effect the plastic films, for example cellulose glass, polyethylene, polypropylene or the like. By the pressure of the air the foils are pressed together in the area of the welding point. Immediately after the welding, the three-way valve 9 is switched over in such a way that the hot air from the Outlet 10 is blown off and cold air is passed through the control valve 7 to the jaws 3. The streams of cold air directed towards one another cool the welding point at least, so that the whole The welding process is finished in a very short time.

81a, 6/01. 1869976: Otto Hansel Junior G.m.b.H., Hannover. | Vorrichtung zum Verschließen von Packungen aus schweißbarer Kunststoffolie. 8. 12. 60. H 36796. (T. X Z. S81a, 6/01. 1869976: Otto Hansel Junior G.m.b.H., Hanover. | contraption for closing packs made of weldable plastic film. December 8, 60 H 36796. (T. X Z. S

—u - u

In den Pig. 2 "bis 5 ist eine Ausführungsform der Schweissbacken wiedergegeben. Die "beiden Folien 2 liegen flach aufeinander. Die Schweissbacken 19 haben die Form rechteckiger Presswerkzeuge, die in der Mitte an den Zuleitungsschlauch 4 für die Heissluft angeschlossen sind. Auf den einander zugekehrten Arbeitsflächen weisen die Platten 19 eine rinnenförmige Vertiefung 20 auf, die über den Kanal 21 mit dem Druckluftanschluss in Verbindung steht. An den Enden gehen die Rinnen 20 in düsenartige Luftaustrittsöffnungen 22 über, die ins Freie münden. Sobald die Backen gemäss Fig. 3 aufeinanderliegen und die Heissluft eingeschaltet ist, kann diese Rinne 20 ausfüllen und bis zu einem gewissen Grad über die Düsen 22 nach aussen abgeblasen v/erden. Es ist also immer frische Heissluft zur Verfügung, die unter dem eingeregelten Druck steht, so dass die Folien von beiden Seiten her erhitzt und gegeneinandergepresst werden. Die Verschweissung erfolgt in kürzester Zeit.In the pig. 2 ″ to 5 is an embodiment of the welding jaws reproduced. The two foils 2 lie flat on top of one another. The welding jaws 19 are in the form of rectangular pressing tools which are connected in the middle to the supply hose 4 for the hot air. On the work surfaces facing each other the plates 19 have a channel-shaped recess 20 which is in communication with the compressed air connection via channel 21. At the ends, the channels 20 go into nozzle-like air outlet openings 22 over that flow into the open air. As soon as the jaws lie on top of one another according to FIG. 3 and the hot air is switched on, can fill this channel 20 and v / ground it to a certain extent through the nozzles 22 to the outside. So it's always fresh Hot air is available, which is under the regulated pressure, so that the foils are heated from both sides and pressed against each other will. The welding takes place in a very short time.

Andererseits sitzen seitlich an den Backen 19 Kühlkammern 23, die an eine Kühlmittelzuleitung 24 und eine Ableitung 25 angeschlossen sind. Das Kühlmittel kann fortgesetzt durchströmen, so dass eine Wärmeabstrahlung nach aussen hin verhütet ist. Unmittelbar nach der Schweissung erfolgt die Beschickung der Werkzeuge mit Kaltluft, die die Schweisstelle schnellstens erstarren lässt.On the other hand, cooling chambers 23, which are connected to a coolant supply line 24 and a discharge line 25, are seated on the side of the jaws 19 are. The coolant can continue to flow through, so that heat radiation to the outside is prevented. Immediately after During the welding process, the tools are fed with cold air, which allows the welding point to solidify as quickly as possible.

Bei der Ausführungsform der Werkzeuge gemäss den Fig. 6 bis 9 gelangen Pressbacken 24 zur Anwendung, die auf ihrer Arbeitsfläche zwei Längsrinnen 25 aufweisen, die in ihren Abmessungen dem UmrissIn the embodiment of the tools according to FIGS. 6 to 9 arrive Press jaws 24 for use, which have two longitudinal grooves 25 on their work surface, the dimensions of which correspond to the outline

Claims (10)

81a, 6/01. 18699761 Otto Hanse! Ju-I nior G.m.b.H., Hannover. | Vorrichtung I zum Verschließen von Packungen aus j schweißbarer Kunststoffolie. 8. 12. €0. Ih 36796. (T.g " der Schweissnaht entsprechen,, Es werden mit den gezeigten Schweiss werkzeugen zwei nebeneinanderliegende Schweissnähte gebildet, wobei die beiden Rinnen, ähnlich wie vorher, über Verbindungsleitungen 26 mit einer Kammer 27 bzw. dem Anschluss der Druckluftleitung 4 verbunden sind. Ebenso sind auch wieder seitliche Kühlräume 28 vorgesehen, die mit einer Kühlmittelzu- und-ableitung 29 verbunden sind. Genau wie vorher sind auch hier wieder die Rinnen 25 mit nach aussen offenen Düsen 30 an ihren Enden versehen. Die Arbeitsweise und die Schaltung der Einrichtung gemäss Fig. 6 bis 9 ist die gleiche wie vorher, nur dass eben jetzt zwei Schweissnähte erzeugt werden. Schutzansprüche :81a, 6/01. 18699761 Otto Hanse! Ju-I nior G.m.b.H., Hanover. | Device I for closing packs made of weldable plastic film. 8. 12. € 0. Ih 36796. (Tg "corresponds to the weld seam ,, The welding tools shown are used to form two adjacent weld seams, the two channels being connected, similarly to before, via connecting lines 26 to a chamber 27 or to the connection of the compressed air line 4. Likewise Lateral cooling spaces 28 are again provided, which are connected to a coolant supply and discharge line 29. Exactly as before, the channels 25 are again provided with outwardly open nozzles 30 at their ends 6 to 9 is the same as before, only that two weld seams are now being produced. 1. Vorrichtung zum Verschließen von Packungen aus schweißbarer Kunststoffolie, gekennzeichnet durch eine gegen die zu verschweißenden Folien heranzuführende Schweißbacke, die mit einer Zuleitung zur wahlweisen Zuführung von Heiß- oder Kaltluftströmen im Bereich der Schweißnaht ausgestattet und an eine Heiß- und Kaltluftquelle angeschlossen ist.1. Device for closing packs made of weldable Plastic film, characterized by one against the to be welded Foil to be fed welding jaw, which with a supply line for the optional supply of hot or cold air streams equipped in the area of the weld seam and connected to a hot and cold air source. 2. Vorrichtung zum Verschließen von Packungen aus schweißbarer Kunststoffolie, gekennzeichnet durch zwei die Folien zv/ischen sich erfassende Backen, die auf den einander zugekehrten Seiten Druckluftaustrittsöffnungen aufweisen und an einen Drucklufterzeuger und einen Druckiufterhixzer über ein Schaltventil derart angeschlossen sind, daß nacheinander ein heißer und ein kalter2. Device for closing packs made of weldable plastic film, characterized by two foils zv / ischen engaging jaws, which have compressed air outlet openings on the sides facing one another, and to a compressed air generator and a Druckiufterhixzer via a switching valve like this are connected that one hot and one cold one after the other 81a, 6/01. : 186997&; Otto Hansel Junior G.m.b.H., Hannover. | Vorrichtung zum Verschließen von Packungen aus schweißbarer Kunststoffolie. 8. 12. £3. H 567%. (T. 8i ■-'/■· 81a, 6/01. : 186997 &; Otto Hansel Junior GmbH, Hanover. | Device for closing packs made of weldable plastic film. 8.12 £ 3. H 567%. (T. 8i ■ - '/ ■ · -4.4.63 \ -4.4.63 \ Druckluftstrom auf das Werkstück aufgeblasen werden.Compressed air flow can be blown onto the workpiece. 3. Vorrichtung zum Verschließen nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in der Schweißbacke für den Austritt der heißen und der kalten Druckluft gemeinsame Druckluftaustrittsöffnungen vorgesehen sind.3. Device for closing according to claim 1 or 2, characterized in that in the welding jaw for the exit of the hot and the cold compressed air common compressed air outlet openings are provided. 4. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Backen als aufeinanderzubewegliche Preßbacken ausgebildet sind.4. Apparatus according to claim 2, characterized in that the jaws are designed as press jaws which can be moved towards one another. 5. Vorrichtung nach Anspruch 1-4, dadurch gekennzeichnet, daß die die Folien zwischen sich einschließenden Preßwerkzeuge als aufeinanderabrollende 7/alzen oder ähnliches ausgebildet sind, die Druckluftaustrittsöffnungen auf ihrem Umfang aufweisen.5. Apparatus according to claim 1-4, characterized in that the pressing tools enclosing the foils between them as one another rolling 7 / alzen or the like are formed, the Have compressed air outlet openings on their circumference. 6. Vorrichtung nach Anspruch 1-5, dadurch gekennzeichnet, daß die Ränder der die Folien zwischen sich einschließenden Preßwerkzeuge um die Druckluftaustrittsöffnungen herum dichtend aufeinanderlegen.6. Apparatus according to claim 1-5, characterized in that the edges of the enclosing the films between them Place pressing tools on top of one another to form a seal around the compressed air outlet openings. 7ο Vorrichtung nach Anspruch 1-6, dadurch gekennzeichnet, daß die Druckluftaustrittsöffnungen auf den einander zugekehrten Seiten der Preßluftwerkzeuge aus Rinnen gebildet sind, die in ihrer Ausdehnung der Größe der vorzusehenden Schweißstelle entsprechen. 7ο device according to claims 1-6, characterized in that the compressed air outlet openings are formed on the facing sides of the compressed air tools from grooves, which in their expansion correspond to the size of the weld to be provided. 8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die8. Apparatus according to claim 7, characterized in that the 81a, 6/OL ΐ Ϊ m97<k) Otto Hansel Junior G.m.b.H., Hannover. {Vorrichtung zum Verschließe» Won-; ■ Packungen aus schweißbarer Kunststoffolie. 8. 12. €0. H 36796. {Ti9Z&ii 81a, 6 / OL Ϊ m97 <k) Otto Hansel Junior GmbH, Hanover. {Device for closure »won- ; ■ Packs made from weldable plastic film. 8. 12. € 0. H 36796. {Ti9Z & ii : : :: ■-■■/■■ - ■■ / ■ den Druckluftaustritt bildenden Rinnen an ihren Enden nach außen offene düsenförmige.Bohrungen aufweisen. the ducts forming the compressed air outlet have outwardly open nozzle-shaped bores at their ends. 9. Vorrichtung nach Anspruch 1-8, dadurch gekennzeichnet, daß die die Folien zwischen sich erfassenden Backen um die Lruckluftaustrittsoffnungen herum hohl und an eine Kühlmittelzu- und -ableitung angeschlossen sind.9. Apparatus according to claim 1-8, characterized in that the the foils between them gripping jaws around the Air outlet openings are hollow and connected to a coolant supply and discharge are connected. 10. Vorrichtung nach Anspruch 1-9, dadurch gekennzeichnet, daß der Antrieb für die Schweißwerkzeuge mit einem Steuerschalter für die Druckluft derart gekuppelt sind, daß der heiße Luftstrom erst nach dem Schließen der Backen eingeschaltet wird.10. Apparatus according to claim 1-9, characterized in that the drive for the welding tools with a control switch for the compressed air are coupled in such a way that the hot air flow is only switched on after the jaws have been closed will.
DEH36796U 1960-12-08 1960-12-08 DEVICE FOR SEALING PACKAGES MADE OF WELDABLE PLASTIC FILM. Expired DE1869976U (en)

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DEH36796U DE1869976U (en) 1960-12-08 1960-12-08 DEVICE FOR SEALING PACKAGES MADE OF WELDABLE PLASTIC FILM.

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DEH36796U DE1869976U (en) 1960-12-08 1960-12-08 DEVICE FOR SEALING PACKAGES MADE OF WELDABLE PLASTIC FILM.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2415228A1 (en) * 1973-04-04 1974-10-10 Dow Chemical Co DEVICE AND METHOD FOR MANUFACTURING, FILLING AND PACKING SAEKKEN

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2415228A1 (en) * 1973-04-04 1974-10-10 Dow Chemical Co DEVICE AND METHOD FOR MANUFACTURING, FILLING AND PACKING SAEKKEN

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