EP0939033A1 - Filling method and apparatus for a dual chamber tube - Google Patents

Filling method and apparatus for a dual chamber tube Download PDF

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Publication number
EP0939033A1
EP0939033A1 EP98124639A EP98124639A EP0939033A1 EP 0939033 A1 EP0939033 A1 EP 0939033A1 EP 98124639 A EP98124639 A EP 98124639A EP 98124639 A EP98124639 A EP 98124639A EP 0939033 A1 EP0939033 A1 EP 0939033A1
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EP
European Patent Office
Prior art keywords
tube
partition
filling
groove
molding head
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.)
Granted
Application number
EP98124639A
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German (de)
French (fr)
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EP0939033B1 (en
Inventor
Bernd Hähnel
Herbert Frey
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IWK Verpackungstechnik GmbH
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IWK Verpackungstechnik GmbH
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Publication of EP0939033A1 publication Critical patent/EP0939033A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/04Methods of, or means for, filling the material into the containers or receptacles
    • B65B3/16Methods of, or means for, filling the material into the containers or receptacles for filling collapsible tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B29/00Packaging of materials presenting special problems
    • B65B29/10Packaging two or more different substances isolated from one another in the package but capable of being mixed without opening the package, e.g. forming packages containing a resin and hardener isolated by a frangible partition
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D35/00Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/22Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with two or more compartments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B65D81/3261Flexible containers having several compartments

Definitions

  • the invention relates to a method for filling a Two-chamber plastic tube, which is essentially one circular cross section and one between two substantially diametrically opposite connection points the partition wall extending from Plastic has an excess length compared to Has tube diameter and together with the tube wall forms the two chambers, one in each chamber Filling nozzle for introducing a filling material introduced and the Then close the tube after removing the filling nozzles becomes.
  • the invention also relates to a device for performing the method with a filling unit and a downstream sealing unit to close the filled tubes.
  • Two-chamber tubes made of plastic have been around for some time known and offer the advantage of two different substances to be able to record in a tube without being together come into contact, such as one Two-component adhesive is necessary.
  • the production a two-chamber tube is initially made as a flat multilayer structure, being between an upper and a lower tube wall layer forming a partition Plastic layer is arranged. Then the Tube erected into an approximately circular shape, the Tube wall that extends diametrically in the tube a significant excess length compared to the tube diameter having. This excess length means that the The partition does not run in a straight line, but an in takes an unpredictable curved shape.
  • the invention has for its object a method to create the type mentioned with the two-chamber tubes can be filled reliably. Beyond that a device can be created with which the method can be carried out in a simple and cost-effective manner.
  • the aforementioned task solved in that the partition before inserting the Filling nozzles in their adjacent to the connection points End areas on the inside of the tube wall like this it is determined that the length of the between the end regions remaining middle range essentially that Corresponds to the diameter of the tube.
  • the partition is thus tightened, by the end portions of the partition due to the Fixing on the tube wall this essentially follow and the middle area between the end areas the partition is essentially straight diametrical based on the circular tube cross section.
  • the partition wall course given so that the filling nozzles with high accuracy in those defined by the tube wall and the partition Chambers can be introduced.
  • a disability of the Filling process due to an uncontrolled position of the Partition is therefore excluded.
  • Embodiment of the invention provided that the End areas of the partition over the entire area with the tube wall get connected.
  • the End areas of the partition with the tube wall superficial be welded.
  • the weld can do this be carried out so that the end areas after filling the Tube are detachable from the tube wall.
  • one superficial welding can also be another type of connection, for example an adhesive for use come.
  • a preferably large-area welded joint between the tube wall and the partition is in a preferred embodiment of the invention in the Tube introduced a heated molding head, which is the partition spans and the end regions of the partition in predetermined Way aligned.
  • a heated molding head which is the partition spans and the end regions of the partition in predetermined Way aligned.
  • the thermal effect of the molding head leads to the partition in the end areas superficially connected to the inside of the tube wall and adheres to it.
  • the middle area of the Partition will not be damaged.
  • the molding head preferably has a groove in which the central region the partition is essentially non-contact can be included.
  • the filling unit upstream of a molding unit is a heated heated insertable into the tube Molding head that uses the end portions of the partition keeps aligned by contact surfaces, and the outside of the Tube arranged press jaws, which against the contact surfaces of the molding head are movable.
  • the above Align and clamp the Partition directly in the tube filling machine as another immediately upstream of the actual filling process Provide treatment step so that the temporal and additional equipment costs can be kept low can.
  • the contact surfaces are preferably on opposite sides of the forming head. Between the two contact surfaces extends in the Shaped head that touches the middle area of the partition receiving groove, which thus the molding head in two Introductory sections divided.
  • the invention provided that the insertion portions of the Molding head on its insertion side facing the tube each have guide surfaces, for example can be achieved in that the guide surfaces are inclined towards each other in such a way that the insertion sections one tapering toward its lower free end Have shape.
  • the contact surfaces are usually parallel to each other aligned.
  • the groove connecting the contact surfaces can run perpendicular to it, but it has proven to be beneficial proven when the groove is oblique to the contact surfaces runs, being between the respective contact surface and the associated groove section an acute angle in of the order of magnitude of approximately 60 ° to 70 ° has proven to be useful Has. This means that the middle area of the Partition runs essentially diagonally in the groove and only selective contact with the groove wall in the area of the transition to the contact surfaces.
  • a molding unit 10 which in a tube filling machine can be installed.
  • the filling unit comprises a vertical stand 11 attached to its top ends in a horizontal cross member 12.
  • a vertically movable Bracket 13 On the cross member 12 is a vertically movable Bracket 13 a shaped head 14 mounted in a dashed Tube 20 shown at the top, open End can be introduced.
  • the molding head 14 are on opposite sides on horizontally movable Brackets 15 associated press jaws 16 associated with when the molding head 14 is retracted from the outside of the Place tube 20 and clamp it against the forming head 14 can, as indicated in Figure 2.
  • the forming head 14 is shown in detail in FIGS. 4 and 5 shown.
  • the molding head 14 has on its front first an oblique insertion side into the tube extending groove 17, which extends over the entire height of the Forming head 14 extends and thus in two finger-like, insertion sections protruding to the insertion side 14a and 14b divided.
  • On their side facing the entry page Top are at the insertion sections 14a, 14b guiding surfaces inclined towards each other, which has a tapering to the insertion sections, Give pyramid-like configuration.
  • the flanks 17a of the groove 17 are over a large part the groove length and especially in the middle area each provided with a large recess 18, so that the groove width is increased in sections.
  • FIG. 3a shows a top view of a conventional two-chamber tube 20 made of plastic.
  • the tube wall 21 is closed erected in a circular shape, with two diametrically between opposite connection points 23 and 24 of the Tube wall 21 is an existing plastic film Partition 22 extends the tube interior in two independent chambers 25 and 26 divided.
  • the partition 22 has a significant excess length compared to the diameter the tube 20, so that in the example shown S-shaped between the two connection points 23 and 24 runs.
  • the molding head is into the tube 20 from above 14 retracted with its introducer, the insertion section 14a in the chamber 25 and the insertion section 14b comes to rest in the chamber 26.
  • the partition 22 is formed by the insertion side of the molding head 14 Guide surfaces in the groove 17 passed so that the partition 22 with its end regions 22a in Plant on the opposite sides of the molding head 14 formed contact surfaces 14c and 14d, while the middle region 22b of the partition wall 22 is in Longitudinal direction of the groove 17 extends and in this due the inclination of the groove 17 is diagonal. This State is shown in Figure 3b.
  • the End regions 22a of the partition wall 22 each essentially kept straight and parallel to each other.
  • the Tube 20 moved the press jaws against the forming head 14, so that the inside of the tube wall 21 with the help of the molding head 14 heated end regions 22a of the partition 22 comes into full contact.
  • this sweat or Connection position are the components for a predetermined period of time held so that a superficial Welding the end regions 22a of the partition wall 22 with the tube wall 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing Of Containers (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Package Closures (AREA)
  • Basic Packing Technique (AREA)

Abstract

The circular tube (20) has a wall and a central plastic dividing wall, forming the chambers. Before separate filler nozzles are inserted into each chamber, the dividing wall is fastened with its end sections to the inside of the tube wall, so that the remaining length of the central wall section is mainly the same as the diameter of the tube. A heated forming head (14) is inserted into the tube to hold the wall end sections, and press jaws (16) are moved into engagement with the holding sections of the head.

Description

Die Erfindung betrifft ein Verfahren zum Befüllen einer Zwei-Kammer-Tube aus Kunststoff, die einen im wesentlichen kreisförmigen Querschnitt und eine sich zwischen zwei im wesentlichen diametral gegenüberliegenden Anschlußpunkten der Tubenwandung erstreckende Trennwand aus Kunststoff aufweist, die eine Überlänge gegenüber dem Tubendurchmesser besitzt und zusammen mit der Tubenwandung die beiden Kammern bildet, wobei in jede Kammer eine Fülldüse zum Einbringen eines Füllguts eingeführt und die Tube anschließend nach Herausführen der Fülldüsen verschlossen wird. Darüber hinaus betrifft die Erfindung eine Vorrichtung zur Durchführung des Verfahrens, mit einer Fülleinheit und einer nachgeschalteten Verschlußeinheit zum Verschließen der gefüllten Tuben.The invention relates to a method for filling a Two-chamber plastic tube, which is essentially one circular cross section and one between two substantially diametrically opposite connection points the partition wall extending from Plastic has an excess length compared to Has tube diameter and together with the tube wall forms the two chambers, one in each chamber Filling nozzle for introducing a filling material introduced and the Then close the tube after removing the filling nozzles becomes. The invention also relates to a device for performing the method with a filling unit and a downstream sealing unit to close the filled tubes.

Zwei-Kammer-Tuben aus Kunststoff sind seit einiger Zeit bekannt und bieten den Vorteil, zwei verschiedene Stoffe in einer Tube aufnehmen zu können, ohne daß sie miteinander in Kontakt kommen, wie es beispielsweise bei einem Zwei- Komponenten-Kleber notwendig ist. Die Herstellung einer Zwei-Kammer-Tube erfolgt zunächst als ebener Mehrschichtaufbau, wobei zwischen einer oberen und einer unteren Tubenwandungsschicht eine die Trennwand bildende Kunststoff-Lage angeordnet wird. Anschließend wird die Tube zu annäherender Kreisform aufgerichtet, wobei die Tubenwand, die sich diametral in der Tube erstrecken soll, eine deutliche Überlänge gegenüber dem Tubendurchmesser aufweist. Diese Überlänge führt dazu, daß die Trennwand nicht geradlinig verläuft, sondern eine in nicht vorhersehbarer Weise gekrümmte Form einnimmt.Two-chamber tubes made of plastic have been around for some time known and offer the advantage of two different substances to be able to record in a tube without being together come into contact, such as one Two-component adhesive is necessary. The production a two-chamber tube is initially made as a flat multilayer structure, being between an upper and a lower tube wall layer forming a partition Plastic layer is arranged. Then the Tube erected into an approximately circular shape, the Tube wall that extends diametrically in the tube a significant excess length compared to the tube diameter having. This excess length means that the The partition does not run in a straight line, but an in takes an unpredictable curved shape.

Bei dem Befüllen der beiden Kammern muß in jede Kammer eine Fülldüse eingefahren werden. Es hat sich gezeigt, daß die unkontrollierte Lage der Trennwand das Einfahren der Fülldüsen häufig behindert oder sogar dazu führt, daß beide Fülldüsen in die gleiche Kammer einfahren, so daß der Füllvorgang abgebrochen werden muß.When filling the two chambers must be in each chamber a filling nozzle can be retracted. It has shown, that the uncontrolled position of the partition is retracting the filling nozzles often obstructed or even leads to the fact that Drive both filling nozzles into the same chamber so that the filling process must be stopped.

Um Fehlfüllungen der Zwei-Kammer-Tuben zu vermeiden, hat man versucht, die Lage der Trennwand vor dem Füllvorgang videotechnisch zu überprüfen, um bei ungünstiger Lage die entsprechende Tube auszusondern. Dieses Vorgehen ist jedoch nicht nur technisch aufwendig und kostenintensiv, sondern führt auch zu einem sehr hohen Anteil an ausgesonderten Tuben, die nicht befüllt werden können.In order to avoid incorrect filling of the two-chamber tubes one tries the position of the partition before the filling process video-technically to check the discard the appropriate tube. This procedure is not only technically complex and costly, but also leads to a very high proportion of discarded Tubes that cannot be filled.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der genannten Art zu schaffen, mit dem Zwei-Kammer-Tuben zuverlässig befüllt werden können. Darüber hinaus soll eine Vorrichtung geschaffen werden, mit der das Verfahren in einfacher und kostengünstiger Weise ausführbar ist. The invention has for its object a method to create the type mentioned with the two-chamber tubes can be filled reliably. Beyond that a device can be created with which the method can be carried out in a simple and cost-effective manner.

Hinsichtlich des Verfahrens wird die vorgenannte Aufgabe dadurch gelöst, daß die Trennwand vor dem Einführen der Fülldüsen in ihren an die Anschlußpunkte angrenzenden Endbereichen an der Innenseite der Tubenwandung derart festgelegt wird, daß die Länge des zwischen den Endbereichen verbleibenden Mittelbereichs im wesentlichen dem Durchmesser der Tube entspricht.With regard to the method, the aforementioned task solved in that the partition before inserting the Filling nozzles in their adjacent to the connection points End areas on the inside of the tube wall like this it is determined that the length of the between the end regions remaining middle range essentially that Corresponds to the diameter of the tube.

Erfindungsgemäß erfolgt somit eine Straffung der Trennwand, indem die Endbereiche der Trennwand infolge der Festlegung an der Tubenwandung dieser im wesentlichen folgen und der zwischen den Endbereichen liegende Mittelbereich der Trennwand im wesentlichen gradlinig diametral bezogen auf den kreisförmigen Tubenquerschnitt verläuft. Auf diese Weise ist ein definierter Trennwandverlauf gegeben, so daß die Fülldüsen mit hoher Genauigkeit in die von der Tubenwandung und der Trennwand definierten Kammern eingeführt werden können. Eine Behinderung des Einfüllvorganges durch eine unkontrollierte Lage der Trennwand ist somit ausgeschlossen.According to the invention, the partition is thus tightened, by the end portions of the partition due to the Fixing on the tube wall this essentially follow and the middle area between the end areas the partition is essentially straight diametrical based on the circular tube cross section. In this way there is a defined partition wall course given so that the filling nozzles with high accuracy in those defined by the tube wall and the partition Chambers can be introduced. A disability of the Filling process due to an uncontrolled position of the Partition is therefore excluded.

Um sicherzustellen, daß die Endbereiche gleichmäßig an der Innenseite der Tubenwandung anliegen, ist in bevorzugter Ausgestaltung der Erfindung vorgesehen, daß die Endbereiche der Trennwand vollflächig mit der Tubenwandung verbunden werden.To ensure that the end areas are even the inside of the tube wall is preferred Embodiment of the invention provided that the End areas of the partition over the entire area with the tube wall get connected.

In Weiterbildung der Erfindung ist vorgesehen, daß die Endbereiche der Trennwand mit der Tubenwandung oberflächlich verschweißt werden. Dabei kann die Schweißung so durchgeführt werden, daß die Endbereiche nach Füllen der Tube von der Tubenwandung wieder lösbar sind. Statt einer oberflächlichen Schweißung kann auch eine andere Verbindungsart, beispielsweise eine Klebung zur Anwendung kommen.In a development of the invention it is provided that the End areas of the partition with the tube wall superficial be welded. The weld can do this be carried out so that the end areas after filling the Tube are detachable from the tube wall. Instead of one superficial welding can also be another type of connection, for example an adhesive for use come.

Um eine vorzugsweise großflächige Schweißverbindung zwischen der Tubenwandung und der Trennwand zu erreichen, wird in bevorzugter Ausgestaltung der Erfindung in die Tube ein beheizter Formkopf eingeführt, der die Trennwand spannt und die Endbereiche der Trennwand in vorbestimmter Weise ausgerichtet hält. Daraufhin werden von der Außenseite der Tube Preßbacken gegen die die Endbereiche der Trennwand haltenden Abschnitte des Formkopfes verfahren, so daß die Tubenwandung und der zugeordnete Endbereich der Trennwand zwischen dem Formkopf und der zugeordneten Preßbacke angeordnet sind. Die Wärmewirkung des Formkopfes führt dazu, daß die Trennwand in den Endbereichen oberflächlich mit der Innenseite der Tubenwandung verbunden wird und an dieser anhaftet.A preferably large-area welded joint between the tube wall and the partition, is in a preferred embodiment of the invention in the Tube introduced a heated molding head, which is the partition spans and the end regions of the partition in predetermined Way aligned. Thereupon, from the outside the tube press jaws against the the end areas of the Move sections of the molding head holding the partition, so that the tube wall and the assigned end area the partition between the mold head and the associated Press jaw are arranged. The thermal effect of the molding head leads to the partition in the end areas superficially connected to the inside of the tube wall and adheres to it.

Bei dem Verbindungsvorgang darf der Mittelbereich der Trennwand nicht beschädigt werden. Zu diesem Zweck weist der Formkopf vorzugsweise eine Nut auf, in der der Mittelbereich der Trennwand im wesentlichen berührungsfrei aufgenommen werden kann.In the connection process, the middle area of the Partition will not be damaged. For this purpose points the molding head preferably has a groove in which the central region the partition is essentially non-contact can be included.

Wenn die Trennwand mit der Tubenwandung nur oberflächlich verbunden wird, braucht nur eine derart geringe Wärmemenge mittels des Formkopfes zugeführt werden, daß die außenliegenden Preßbacken unbeheizt und ungekühlt ausgebildet sein können.If the partition with the tube wall is only superficial is connected, requires only such a small amount of heat be supplied by means of the molding head that the external press jaws unheated and uncooled could be.

Hinsichtlich der Vorrichtung wird die o.g. Aufgabe dadurch gelöst, daß der Fülleinheit eine Formeinheit vorgeschaltet ist, die einen in die Tube einführbaren, beheizten Formkopf, der die Endbereiche der Trennwand mit Hilfe von Anlageflächen ausgerichtet hält, und außenseitig der Tube angeordnete Preßbacken umfaßt, die gegen die Anlageflächen des Formkopfes verfahrbar sind. Auf diese Weise ist es möglich, das o.g. Ausrichten und Spannen der Trennwand direkt in der Tubenfüllmaschine als weiteren, dem eigentlichen Füllvorgang unmittelbar vorgeschalteten Behandlungsschritt vorzusehen, so daß der zeitliche und apparatetechnische Mehraufwand gering gehalten werden kann.Regarding the device, the above. Task thereby solved that the filling unit upstream of a molding unit is a heated heated insertable into the tube Molding head that uses the end portions of the partition keeps aligned by contact surfaces, and the outside of the Tube arranged press jaws, which against the contact surfaces of the molding head are movable. In this way is it possible that the above Align and clamp the Partition directly in the tube filling machine as another immediately upstream of the actual filling process Provide treatment step so that the temporal and additional equipment costs can be kept low can.

Da die mit der Tubenwandung zu verbindenden Endbereiche der Trennwand im wesentlichen diametral entgegengesetzt angeordnet sind, sind die Anlageflächen vorzugsweise auf entgegengesetzten Seiten des Formkopfes ausgebildet. Zwischen den beiden Anlageflächen erstreckt sich im Formkopf die den Mittelbereich der Trennwand berührungsfrei aufnehmende Nut, die somit den Formkopf in zwei Einführabschnitte unterteilt.Since the end areas to be connected to the tube wall the partition essentially diametrically opposite are arranged, the contact surfaces are preferably on opposite sides of the forming head. Between the two contact surfaces extends in the Shaped head that touches the middle area of the partition receiving groove, which thus the molding head in two Introductory sections divided.

Um das Einführen des Formkopfes in die Tube zu erleichtern und insbesondere das Einfangen der Trennwand in der Nut zuverlässig zu gewährleisten, ist in Weiterbildung der Erfindung vorgesehen, daß die Einführabschnitte des Formkopfes auf ihrer der Tube zugewandten Einführseite jeweils Führungsflächen aufweisen, was beispielsweise dadurch erreicht werden kann, daß die Führungsflächen derart gegeneinander geneigt sind, daß die Einführabschnitte eine sich zu ihrem unteren freien Ende verjüngende Form aufweisen.To make it easier to insert the forming head into the tube and especially trapping the partition in the To ensure that groove is reliable is in further training the invention provided that the insertion portions of the Molding head on its insertion side facing the tube each have guide surfaces, for example can be achieved in that the guide surfaces are inclined towards each other in such a way that the insertion sections one tapering toward its lower free end Have shape.

Die Anlageflächen sind in der Regel parallel zueinander ausgerichtet. Die die Anlageflächen verbindende Nut kann senkrecht dazu verlaufen, es hat sich jedoch als vorteilhaft erwiesen, wenn die Nut schräg zu den Anlageflächen verläuft, wobei sich zwischen der jeweiligen Anlagefläche und dem zugeordneten Nutabschnitt ein spitzer Winkel in der Größenordnung von ca. 60° bis 70° als sinnvoll erwiesen hat. Dies führt dazu, daß der Mittelbereich der Trennwand im wesentlichen diagonal in der Nut verläuft und nur punktuellen Kontakt mit der Nutwandung im Bereich des Überganges zu den Anlageflächen besitzt. Um zuverlässig zu vermeiden, daß der Mittelbereich der Trennwand in der Nut mit der Nutwandung oder -flanke in Anlage kommt, kann an den Nutflanken jeweils eine sich über die gesamte Länge oder zumindest den mittleren Bereich der Nutlänge erstreckende Ausnehmung vorgesehen sein, so daß die Nutwandung eine möglichst großen Abstand zu dem Mittelbereich der Trennwand aufweist.The contact surfaces are usually parallel to each other aligned. The groove connecting the contact surfaces can run perpendicular to it, but it has proven to be beneficial proven when the groove is oblique to the contact surfaces runs, being between the respective contact surface and the associated groove section an acute angle in of the order of magnitude of approximately 60 ° to 70 ° has proven to be useful Has. This means that the middle area of the Partition runs essentially diagonally in the groove and only selective contact with the groove wall in the area of the transition to the contact surfaces. To be reliable to avoid that the middle area of the partition in the groove comes into contact with the groove wall or flank, can one on the groove flanks each over the entire Length or at least the central area of the groove length extending recess may be provided so that the Groove wall as large a distance to the central area the partition has.

Weitere Einzelheiten und Merkmale der Erfindung sind aus der folgenden Beschreibung eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung ersichtlich. Es zeigen:

Figur 1
eine schematische Seitenansicht einer Formeinheit,
Figur 2
den Schnitt II-II in Figur 1,
Figuren 3a, 3b, 3c, 3d
die einzelnen Phasen der Befestigung der Endabschnitte der Trennwand,
Figur 4
eine perspektivische Vorderansicht des Formkopfes und
Figur 5
eine vergrößerte Vorderansicht des Formkopfes.
Further details and features of the invention are apparent from the following description of an embodiment with reference to the drawing. Show it:
Figure 1
1 shows a schematic side view of a molding unit,
Figure 2
the section II-II in Figure 1,
Figures 3a, 3b, 3c, 3d
the individual phases of fastening the end sections of the partition,
Figure 4
a front perspective view of the molding head and
Figure 5
an enlarged front view of the molding head.

In Figur 1 ist eine Formeinheit 10 dargestellt, die in eine Tubenfüllmaschine eingebaut werden kann. Die Fülleinheit umfaßt einen vertikalen Ständer 11, der an seinem oberen Ende in einen horizontalen Querträger 12 übergeht. Am Querträger 12 ist über eine vertikal verfahrbare Halterung 13 ein Formkopf 14 gelagert, der in eine gestrichelt dargestellte Tube 20 an deren oberem, offenen Ende eingeführt werden kann. Dem Formkopf 14 sind auf entgegengesetzten Seiten an horizontal verfahrbaren Halterungen 15 gelagerte Preßbacken 16 zugeordnet, die bei eingefahrenem Formkopf 14 sich von der Außenseite der Tube 20 anlegen und diese gegen den Formkopf 14 spannen können, wie es in Figur 2 angedeutet ist.In Figure 1, a molding unit 10 is shown, which in a tube filling machine can be installed. The filling unit comprises a vertical stand 11 attached to its top ends in a horizontal cross member 12. On the cross member 12 is a vertically movable Bracket 13 a shaped head 14 mounted in a dashed Tube 20 shown at the top, open End can be introduced. The molding head 14 are on opposite sides on horizontally movable Brackets 15 associated press jaws 16 associated with when the molding head 14 is retracted from the outside of the Place tube 20 and clamp it against the forming head 14 can, as indicated in Figure 2.

Der Formkopf 14 ist in den Figuren 4 und 5 im Detail dargestellt. Der Formkopf 14 besitzt auf seiner vorderen, zuerst in die Tube eintauchenden Einführseite eine schräg verlaufende Nut 17, die sich über die gesamte Höhe des Formkopfes 14 erstreckt und diesen somit in zwei fingerartige, zur Einführseite vorstehende Einführabschnitte 14a und 14b unterteilt. Auf ihrer der Einführseite zugewandten Oberseite sind an den Einführabschnitten 14a, 14b jeweils gegeneinander geneigte Führungsflächen ausgebildet, die den Einführabschnitten eine spitz zulaufende, pyramidenartige Konfiguration verleihen.The forming head 14 is shown in detail in FIGS. 4 and 5 shown. The molding head 14 has on its front first an oblique insertion side into the tube extending groove 17, which extends over the entire height of the Forming head 14 extends and thus in two finger-like, insertion sections protruding to the insertion side 14a and 14b divided. On their side facing the entry page Top are at the insertion sections 14a, 14b guiding surfaces inclined towards each other, which has a tapering to the insertion sections, Give pyramid-like configuration.

Auf den entgegengesetzten Seitenflächen des Formkopfes 14, zwischen denen sich die Nut 17 erstreckt, sind Anlageflächen 14c und 14d gebildet, deren Funktion später erläutert wird. Mittels einer nicht dargestellten Heizeinrichtung kann der Formkopf 14 erwärmt oder beheizt werden.On the opposite side faces of the forming head 14, between which the groove 17 extends, are contact surfaces 14c and 14d formed, their function later is explained. By means of a heating device, not shown the molding head 14 can be heated or heated become.

Die Flanken 17a der Nut 17 sind über einen großen Teil der Nutlänge und insbesondere in deren Mittelbereich jeweils mit einer großflächigen Ausnehmung 18 versehen, so daß die Nutbreite abschnittsweise vergrößert ist.The flanks 17a of the groove 17 are over a large part the groove length and especially in the middle area each provided with a large recess 18, so that the groove width is increased in sections.

Figur 3a zeigt eine Aufsicht auf eine herkömmliche Zwei-Kammer-Tube 20 aus Kunststoff. Die Tubenwandung 21 ist zu einer Kreisform aufgerichtet, wobei zwischen zwei diametral gegenüberliegenden Anschlußpunkten 23 bzw. 24 der Tubenwandung 21 sich eine aus Kunststoff-Folie bestehende Trennwand 22 erstreckt, die den Tubeninnenraum in zwei unabhängige Kammern 25 und 26 unterteilt. Die Trennwand 22 besitzt eine deutliche Überlänge gegenüber dem Durchmesser der Tube 20, so daß sie im dargestellten Beispiel s-förmig zwischen den beiden Anschlußpunkten 23 und 24 verläuft.FIG. 3a shows a top view of a conventional two-chamber tube 20 made of plastic. The tube wall 21 is closed erected in a circular shape, with two diametrically between opposite connection points 23 and 24 of the Tube wall 21 is an existing plastic film Partition 22 extends the tube interior in two independent chambers 25 and 26 divided. The partition 22 has a significant excess length compared to the diameter the tube 20, so that in the example shown S-shaped between the two connection points 23 and 24 runs.

Um die Trennwand 22 zu spannen und in vorbestimmter Weise auszurichten, wird von oben in die Tube 20 der Formkopf 14 mit seinem Einführende eingefahren, wobei der Einführabschnitt 14a in der Kammer 25 und der Einführabschnitt 14b in der Kammer 26 zu liegen kommt. Die Trennwand 22 wird dabei von den einführseitig des Formkopfes 14 ausgebildeten Führungsflächen in die Nut 17 geleitet, so daß sich die Trennwand 22 mit ihren Endbereichen 22a in Anlage an den auf entgegengesetzten Seiten des Formkopfes 14 ausgebildeten Anlageflächen 14c bzw. 14d befindet, während der Mittelbereich 22b der Trennwand 22 sich in Längsrichtung der Nut 17 erstreckt und in dieser aufgrund der Schrägstellung der Nut 17 diagonal verläuft. Dieser Zustand ist in Figur 3b dargestellt. Dabei werden die Endbereiche 22a der Trennwand 22 jeweils im wesentlichen gerade sowie parallel zueinander gehalten.To tension the partition 22 and in a predetermined manner to align, the molding head is into the tube 20 from above 14 retracted with its introducer, the insertion section 14a in the chamber 25 and the insertion section 14b comes to rest in the chamber 26. The partition 22 is formed by the insertion side of the molding head 14 Guide surfaces in the groove 17 passed so that the partition 22 with its end regions 22a in Plant on the opposite sides of the molding head 14 formed contact surfaces 14c and 14d, while the middle region 22b of the partition wall 22 is in Longitudinal direction of the groove 17 extends and in this due the inclination of the groove 17 is diagonal. This State is shown in Figure 3b. The End regions 22a of the partition wall 22 each essentially kept straight and parallel to each other.

Wie Figur 3c andeutet, werden dann von der Außenseite der Tube 20 die Preßbacken gegen den Formkopf 14 gefahren, so daß die Innenseite der Tubenwandung 21 mit den mit Hilfe des Formkopfes 14 erwärmten Endbereichen 22a der Trennwand 22 vollflächig in Anlage kommt. In dieser Schweiß- oder Verbindungsstellung werden die Bauteile für eine vorbestimmte Zeitspanne gehalten, so daß eine oberflächliche Verschweißung der Endbereiche 22a der Trennwand 22 mit der Tubenwandung 21 erfolgt. Nachdem die Preßbacken 16 zurückgefahren sind und der Formkopf 14 aus dem Tubeninnenraum zurückgezogen wurde, ist der in Figur 3d dargestellte Zustand erreicht, in dem die Endbereiche 22a der Trennwand 22 vollflächig mit der Tubenwandung 21 verbunden sind, während der Mittelbereich 22b sich im wesentlichen geradlinig und diametral durch den Innenraum der Tube 20 erstreckt, die eine geringe bleibende Verformung durch den Befestigungsvorgang erfahren hat, die für den weiteren Füllvorgang jedoch keine Nachteile bringt.As indicated in Figure 3c, the Tube 20 moved the press jaws against the forming head 14, so that the inside of the tube wall 21 with the help of the molding head 14 heated end regions 22a of the partition 22 comes into full contact. In this sweat or Connection position are the components for a predetermined period of time held so that a superficial Welding the end regions 22a of the partition wall 22 with the tube wall 21. After the press jaws 16 are retracted and the molding head 14 from the interior of the tube withdrawn, is that shown in Figure 3d Condition reached in which the end portions 22a of the Partition 22 is connected to the tube wall 21 over the entire surface are, while the central region 22b is substantially straight and diametrically through the interior of the Tube 20 extends, which has a small permanent deformation has experienced through the fastening process for the further filling process brings no disadvantages.

Claims (15)

Verfahren zum Befüllen einer Zwei-Kammer-Tube aus Kunststoff, die einen im wesentlichen kreisförmigen Querschnitt und eine sich zwischen zwei im wesentlichen diametral gegenüberliegenden Anschlußpunkten (23, 24) der Tubenwandung (21) erstreckende Trennwand (22) aus Kunststoff aufweist, die eine Überlänge gegenüber dem Tubendurchmesser besitzt und zusammen mit der Tubenwandung (21) die beiden Kammern (25, 26) bildet, wobei in jede Kammer (25, 26) eine Fülldüse zum Einbringen eines Füllguts eingeführt und die Tube (20) anschließend nach dem Herausführen der Fülldüsen verschlossen wird, dadurch gekennzeichnet, daß die Trennwand (22) vor dem Einführen der Fülldüsen in ihren an die Anschlußpunkte (23, 24) angrenzenden Endbereichen (22a) an der Innenseite der Tubenwandung (21) derart festgelegt wird, daß die Länge des zwischen den Endbereichen (22a) verbleibenden Mittelbereichs (22b) im wesentlichen dem Durchmesser der Tube (20) entspricht. Procedure for filling a two-chamber tube Plastic which is a substantially circular Cross section and one between two essentially diametrically opposite connection points (23, 24) of the tube wall (21) extending partition (22) made of plastic, which is an excess length compared to the tube diameter and together with the tube wall (21) the two chambers (25, 26) forms, one in each chamber (25, 26) Filling nozzle introduced for introducing a filling material and then the tube (20) after being led out the filling nozzle is closed, characterized in that that the partition (22) before insertion of the filling nozzles in their connection points (23, 24) adjacent end regions (22a) on the inside the tube wall (21) is set such that the length of the remaining between the end regions (22a) Middle region (22b) essentially that Diameter of the tube (20) corresponds. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Endbereiche (22a) der Trennwand (22) vollflächig mit der Tubenwandung (21) verbunden werden.A method according to claim 1, characterized in that the end regions (22a) of the partition (22) over the entire surface be connected to the tube wall (21). Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Endbereiche (22a) der Trennwand (22) mit der Tubenwandung (21) oberflächlich verschweißt werden.A method according to claim 1 or 2, characterized in that that the end portions (22a) of the partition (22) welded to the surface of the tube wall (21) become. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Endbereiche (22a) lösbar an der Tubenwandung (21) festgelegt sind.Method according to one of claims 1 to 3, characterized characterized in that the end regions (22a) are detachable the tube wall (21) are fixed. Verfahren nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß in die Tube (20) ein beheizter Formkopf (14) eingeführt wird, der die Endbereiche (22a) der Trennwand (22) ausgerichtet hält und daß von der Außenseite der Tube (20) Preßbacken (16) gegen die die Endbereiche (22a) haltenden Abschnitte (14c, 14d) des Formkopfes (14) verfahren werden.A method according to claim 3 or 4, characterized in that in the tube (20) a heated molding head (14) is introduced, the end regions (22a) the partition (22) keeps aligned and that of the Outside of the tube (20) press jaws (16) against the the portions (14c) holding the end regions (22a) 14d) of the molding head (14). Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß der Formkopf (14) den Mittelbereich (22b) der Trennwand (22) in einer Nut (17) im wesentlichen berührungsfrei aufnimmt.A method according to claim 5, characterized in that the molding head (14) the central region (22b) of the Partition (22) in a groove (17) essentially records without contact. Verfahren nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Preßbacken (16) unbeheizt und ungekühlt sind.A method according to claim 5 or 6, characterized in that that the press jaws (16) are unheated and are uncooled. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 7, mit einer Fülleinheit und einer nachgeschalteten Verschlußeinheit zum Verschließen der gefüllten Tube, dadurch gekennzeichnet, daß der Fülleinheit eine Formeinheit (10) vorgeschaltet ist, die einen in die Tube (20) einführbaren, beheizten Formkopf (14), der die Endbereiche (22a) der Trennwand (22) mit Hilfe von Anlageflächen (14c, 14d) ausgerichtet hält, und außenseitig der Tube (20) angeordnete Preßbacken (16) umfaßt, die gegen die Anlageflächen (14c, 14d) des Formkopfes (14) verfahrbar sind.Device for performing the method according to one of claims 1 to 7, with a filling unit and a downstream closure unit for Closing the filled tube, characterized in that that the filling unit has a molding unit (10) is connected upstream, which can be inserted into the tube (20), heated molding head (14) of the end areas (22a) the partition (22) with the help of contact surfaces (14c, 14d) keeps aligned, and outside the pressing jaws (16) arranged in the tube (20) comprises the against the contact surfaces (14c, 14d) of the Form head (14) are movable. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Anlageflächen (14c, 14d) auf entgegengesetzten Seiten des Formkopfes (14) ausgebildet sind.Device according to claim 8, characterized in that the contact surfaces (14c, 14d) on opposite Sides of the molding head (14) are formed. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß der Formkopf (14) eine sich zwischen den Anlageflächen (14c, 14d) erstreckende Nut (17) besitzt, die den Formkopf (14) in zwei Einführabschnitte (14a, 14b) unterteilt.Apparatus according to claim 9, characterized in that the molding head (14) between the contact surfaces (14c, 14d) has extending groove (17), which the molding head (14) in two insertion sections (14a, 14b) divided. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Einführabschnitte (14a, 14b) auf ihrer der Tube (20) zugewandten Einführseite jeweils Führungsflächen aufweisen.Apparatus according to claim 10, characterized in that the insertion sections (14a, 14b) on their the insertion side facing the tube (20) in each case Have guide surfaces. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die Führungsflächen gegeneinander geneigt sind, so daß die Einführabschnitte (14a, 14b) eine sich verjüngende Form aufweisen.Device according to claim 11, characterized in that the guide surfaces are inclined towards each other are so that the insertion sections (14a, 14b) one have a tapered shape. Vorrichtung nach einem der Ansprüche 8 bis 12, dadurch gekennzeichnet, daß die Nut (17) schräg zu den Anlageflächen (14c, 14d) verläuft. Device according to one of claims 8 to 12, characterized in that the groove (17) is inclined the contact surfaces (14c, 14d). Vorrichtung nach einem der Ansprüche 8 bis 13, dadurch gekennzeichnet, daß die Nut (17) im mittleren Bereich ihrer Länge an ihren Nutflanken (17a) jeweils Ausnehmungen (18) aufweist.Device according to one of claims 8 to 13, characterized in that the groove (17) in the middle Area of their length at their groove flanks (17a) each has recesses (18). Vorrichtung nach einem der Ansprüche 8 bis 14, dadurch gekennzeichnet, daß die Preßbacken (16) unbeheizt und ungekühlt sind.Device according to one of claims 8 to 14, characterized in that the press jaws (16) are unheated and uncooled.
EP98124639A 1998-02-28 1998-12-23 Filling method and apparatus for a dual chamber tube Expired - Lifetime EP0939033B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19808649 1998-02-28
DE19808649A DE19808649A1 (en) 1998-02-28 1998-02-28 Method for filling a two-chamber tube and device for carrying it out

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EP0939033A1 true EP0939033A1 (en) 1999-09-01
EP0939033B1 EP0939033B1 (en) 2003-04-16

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EP (1) EP0939033B1 (en)
AT (1) ATE237501T1 (en)
DE (2) DE19808649A1 (en)

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DE19808649A1 (en) 1999-09-02
EP0939033B1 (en) 2003-04-16
DE59807958D1 (en) 2003-05-22
US6185911B1 (en) 2001-02-13
ATE237501T1 (en) 2003-05-15

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