EP3894326B1 - Tube holder for a tube filling machine - Google Patents

Tube holder for a tube filling machine Download PDF

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Publication number
EP3894326B1
EP3894326B1 EP19795078.5A EP19795078A EP3894326B1 EP 3894326 B1 EP3894326 B1 EP 3894326B1 EP 19795078 A EP19795078 A EP 19795078A EP 3894326 B1 EP3894326 B1 EP 3894326B1
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EP
European Patent Office
Prior art keywords
tube
clamping element
tube holder
holder according
receptacle
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EP19795078.5A
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German (de)
French (fr)
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EP3894326A1 (en
Inventor
Andreas Siegele
Bernd Köhler
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IWK Verpackungstechnik GmbH
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IWK Verpackungstechnik GmbH
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Publication of EP3894326A1 publication Critical patent/EP3894326A1/en
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    • 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
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B3/16—Methods of, or means for, filling the material into the containers or receptacles for filling collapsible tubes
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
    • B65B43/54—Means for supporting containers or receptacles during the filling operation

Definitions

  • the invention relates to a tube holder for a tube filling machine, with a housing that has a tube receptacle that opens upwards and into which one end area of a tube can be inserted, with at least one clamping element being arranged in the area of an inner wall of the tube receptacle, by means of which at least of a spring element, a clamping force acting radially from the outside on the inserted tube can be applied, the clamping element being pivotably mounted about a horizontally extending pivot axis.
  • a tube filling machine usually has an endlessly circulating conveying device which carries a large number of receptacles, in each of which a tube holder is inserted.
  • a tube with its head or cap section can be inserted from above into each tube holder, the tube passing through the individual work stations of the tube filling machine together with the tube holder.
  • it can be provided that the tube with is lifted out of the holder by its tube holder and introduced into the respective work station.
  • the tube with its tube holder is lowered back into the holder.
  • the filled and closed tube is removed from the tube holder and transported away.
  • Tube holders are known in various configurations.
  • a tube holder has a housing with an upwardly opening tube receptacle into which a tube, which is preferably made of plastic or metal, is inserted with its head or cap section.
  • a plurality of vertical slits are formed in the inner wall of the tube receptacle and are distributed over the circumference of the tube wall.
  • a tensioning element which is under the action of a spring element, sits in each slot. Each tensioning element can be adjusted perpendicularly to the longitudinal center axis of the tube receptacle and is acted upon by the spring element radially inward in the direction of the longitudinal center axis of the tube receptacle.
  • the tube presses the clamping elements radially outward against the respective spring force.
  • the clamping elements are pressed radially from the outside against the outer wall of the tube, as a result of which the tube is clamped in the tube receptacle.
  • top and bottom refer to the usual orientation of a tube holder with a tube receptacle that opens upwards, in which the tube can be inserted with its head or cap section from above, so that the tube with its to-be-closed end protrudes from the top of the tube holder.
  • the tube holder When the tube holder is aligned in this way, it extends
  • the longitudinal central axis is vertical and the radial displacement of the clamping elements takes place perpendicularly thereto and thus essentially horizontally.
  • the invention is not limited to a corresponding orientation of the tube holder.
  • a tube holder is known in which the clamping elements are pivotably mounted about a horizontally extending pivot axis. In this way it is possible to securely hold different tube shapes or tubes with slight deformations.
  • the tubes are held in a non-positive manner using the well-known tube holder.
  • the clamping elements When the tubes are inserted into the tube holder, the clamping elements are displaced against the spring force, as a result of which they exert a clamping force and thus an increased frictional force on the tube.
  • the tube When the tube is removed, it is pulled upwards out of the tube holder, whereby the clamping elements return to their starting position as a result of the spring force.
  • this procedure can only be carried out with tubes which have a smooth, continuous outer surface and, in particular, a smooth, continuous cap.
  • tubes are known whose caps have recesses or undercuts. When the clamping elements of a tube holder engage in these recesses or behind these undercuts, the tube is held in the tube holder with a positive fit and cannot be removed from it by pulling it out.
  • the object of the invention is to create a tube holder of the type mentioned, in which tubes are also held securely and can be released safely, which have recesses and/or undercuts, in particular in the area of their cap.
  • a tube holder having the features of claim 1 .
  • a stop part is provided which has a control surface and which can be displaced relative to the tensioning element in such a way that the tensioning element can be brought into contact with the control surface on a bearing surface and can therefore be pivoted about the pivot axis.
  • the invention is based on the basic idea that the tensioning element is pivoted against the spring force into a release position by contacting the control surface of the stop part, in which it is disengaged from the tube, so that the tube can be removed from the tube holder.
  • the stop part can be displaced relative to the clamping element. On the one hand, this can be done in that the stop part is stationary and the tensioning element is moved against the stop part and brought into contact with it. Alternatively, it is also possible for the stop part to be displaced and thereby brought into contact with the tensioning element.
  • the tensioning element can be moved from an engaged position, in which the tensioning element protrudes radially inwards into the tube receptacle, into the said release position, in which it is radially retracted from the tube receptacle, by contacting the control surface.
  • the stop part is designed in the shape of a shell and has a conically tapering cross section.
  • the lower end of the clamping element preferably comes into contact with the control surface of the stop part and is thereby pivoted about its pivot axis into the release position.
  • the control surface can be formed at least in sections by an inner wall of the stop part.
  • the stop part is arranged vertically below the clamping element and below the tube receptacle. In this way, the stop part requires only a small amount of space and does not impede the insertion and removal of the tube.
  • the pivot axis of the clamping element runs horizontally and in particular at a distance perpendicular to the longitudinal center axis of the tube holder and preferably also perpendicular to the radial displacement movement of the clamping element against or as a result of the spring force. Provision is preferably made for the pivot axis to be arranged in a middle section of the tensioning element.
  • the tensioning element has an upper 1. section which rests on an upper opening the tube receptacle facing side of the pivot axis is arranged above this, and a lower 2nd section, which is arranged on the side of the pivot axis facing away from the opening of the tube receptacle below this.
  • the contact surface of the clamping element is formed on the lower 2nd section of the clamping element.
  • the contact surface can be formed at the lower end of the clamping element.
  • the clamping element protrudes downwards from the housing of the tube holder.
  • the housing of the tube holder is lowered and/or the stop element is raised, the lower end of the clamping element with the contact surface is inserted into the stop part, comes into contact there with the control surface and is moved over the control surface, as a result of which the pivoting movement of the clamping element is effected.
  • the tensioning element which preferably consists of plastic or metal, is designed in the form of a bow or strip.
  • the clamping element is preferably under the action of at least one spring element.
  • At least one 1st spring element can be arranged on the upper 1st section of the tensioning element and thus above the pivot axis.
  • the first spring element exerts a radially inward force on the clamping element, directed in the direction of the central longitudinal axis of the tube receptacle, so that the clamping element when inserted Tube is stretched against the tube as a result of the 1st spring element.
  • the pivot axis of the clamping element is formed by integrally formed stub axles which are loosely inserted into a radially inwardly extending radial groove which is formed in the housing of the tube holder.
  • the tensioning element is pressed radially inwards by the upper 1st spring element so far that the pivot axis of the tensioning element migrates radially outwards from the radial groove and possibly even slips out of the radial groove.
  • at least a 2nd spring element can act on the lower 2nd section of the tensioning element. Due to the force of the second spring element, the swivel axis of the clamping element is held securely in the radial groove.
  • the torque acting through the upper 1st spring element on the pivot axis should be greater than the counter-torque generated by the lower 2nd spring element on the pivot axis. This ensures that the clamping element remains in its engaged position.
  • clamping elements In order to ensure that the tube is held securely within the tube holder, several clamping elements should be arranged, preferably evenly distributed over the circumference of the inner wall of the tube holder. It has proven useful to provide at least 2 and in particular 3, 4 or 5 clamping elements for the tube holder.
  • each clamping element is in a recess or an opening of the housing is arranged.
  • Each recess or opening preferably extends in the longitudinal direction and thus parallel to the longitudinal central axis of the tube receptacle.
  • the clamping element can have a retaining projection protruding radially inwards at its upper end.
  • a tube holder 10 has a housing 11 with a peripheral flange 11a.
  • the housing 11 is made of plastic and has an upwardly opening tube receptacle 12 inside, which is adapted to the shape of the head or the cap of the tube to be received.
  • tube receptacle 12 In the wall of the tube receptacle 12 there are four vertically extending, slot-shaped recesses 15 which are distributed over the circumference and completely penetrate the wall of the housing 11 .
  • each recess 15 a vertically aligned, bow-shaped clamping element 14 is arranged.
  • Each clamping element is mounted on the housing 11 so that it can pivot about a horizontal pivot axis 18, as shown in figure 2 is indicated by the double arrows S.
  • the pivot axis 18 is arranged in the central region of each clamping element 14, so that the clamping element 14 has an upper 1st section 14.1, which is arranged on the side of the pivot axis 18 facing the opening 12b of the tube receptacle 12, and a lower 2nd section 14.2. which is arranged on the lower side of the pivot axis 18 facing away from the opening 12b of the tube receptacle 12 .
  • a curved contact surface 14a is formed at the lower end of each clamping element 14.
  • each clamping element 14 is loosely inserted into a radial groove 22 of the housing 11 .
  • the radial groove 22 extends perpendicularly to the longitudinal central axis L of the tube receptacle and opens radially outwards.
  • all clamping elements 14 are surrounded by two circumferential 1st spring elements in the form of annular springs, which exert a clamping force on the clamping elements 14 in their upper 1st section 14.1, directed radially inwards in the direction of the longitudinal center axis L of the tube receptacle 12 .
  • the lower 2nd sections 14.2 of the clamping elements 14 are surrounded by a 2nd spring element 17 in the form of an annular spring which, in its lower 2nd section, tensions the clamping elements 14 with a 2nd spring force directed radially inwards towards the longitudinal central axis L of the tube receptacle 12 applied.
  • the lower 2nd spring element 17 serves to to keep the pivot axes 18 of the clamping elements 14 in the radial groove 22.
  • each clamping element 14 has a retaining projection 19 which protrudes radially inwards and which can engage with a recess or an undercut of a tube.
  • a stop part 13 which opens in a bowl-shaped manner upwards, i.e. in the direction of the clamping elements 14, and which has a conically tapering inner cross-section.
  • the stop part 13 is vertically displaceable relative to the clamping elements 14 .
  • the stop part 13 can be raised in the direction of the clamping elements 14 .
  • the stop part 13 When a new tube is inserted into the tube receptacle 12, the stop part 13 is lowered again, as a result of which the clamping elements 14 are released from the control surface 20 of the stop part 13 and, as a result of the action of the first spring elements 16, into an engaged position which protrudes radially inwards into the tube receptacle 12 be panned.

Description

Die Erfindung betrifft einen Tubenhalter für eine Tubenfüllmaschine, mit einem Gehäuse, das eine nach oben öffnende Tubenaufnahme aufweist, in die eine Tube mit ihrem einen Endbereich einsteckbar ist, wobei im Bereich einer Innenwandung der Tubenaufnahme zumindest ein Spannelement angeordnet ist, mittels dessen unter Wirkung zumindest eines Federelementes eine radial von außen auf die eingesetzte Tube wirkende Spannkraft aufbringbar ist, wobei das Spannelement um eine sich horizontal erstreckende Schwenkachse schwenkbar gelagert ist.The invention relates to a tube holder for a tube filling machine, with a housing that has a tube receptacle that opens upwards and into which one end area of a tube can be inserted, with at least one clamping element being arranged in the area of an inner wall of the tube receptacle, by means of which at least of a spring element, a clamping force acting radially from the outside on the inserted tube can be applied, the clamping element being pivotably mounted about a horizontally extending pivot axis.

Üblicherweise weist eine Tubenfüllmaschine eine endlos umlaufene Fördervorrichtung auf, die eine Vielzahl von Aufnahmen trägt, in die jeweils ein Tubenhalter eingesetzt ist. In jedem Tubenhalter kann von oben eine Tube mit ihrem Kopf- oder Kappenabschnitt eingeführt werden, wobei die Tube zusammen mit dem Tubenhalter die einzelnen Arbeitsstationen der Tubenfüllmaschine durchläuft. In einigen Arbeitsstationen, beispielsweise in der Füllstation und in der Verschließstation, kann vorgesehen sein, dass die Tube mit ihrem Tubenhalter aus der Aufnahme angehoben und in die jeweilige Arbeitsstation eingeführt wird. Nach Beendigung des Arbeitsschrittes wird die Tube mit ihrem Tubenhalter wieder in die Aufnahme abgesenkt. In einer Entnahmestation wird die gefüllte und geschlossene Tube aus dem Tubenhalter entnommen und abtransportiert.A tube filling machine usually has an endlessly circulating conveying device which carries a large number of receptacles, in each of which a tube holder is inserted. A tube with its head or cap section can be inserted from above into each tube holder, the tube passing through the individual work stations of the tube filling machine together with the tube holder. In some work stations, for example in the filling station and in the closing station, it can be provided that the tube with is lifted out of the holder by its tube holder and introduced into the respective work station. After the end of the work step, the tube with its tube holder is lowered back into the holder. In a removal station, the filled and closed tube is removed from the tube holder and transported away.

Tubenhalter sind in verschiedenen Ausgestaltungen bekannt. Insbesondere weist ein Tubenhalter ein Gehäuse mit einer nach oben öffnenden Tubenaufnahme auf, in die eine Tube, die vorzugsweise aus Kunststoff oder Metall besteht, mit ihrem Kopf- oder Kappenabschnitt eingesetzt wird. In der Innenwandung der Tubenaufnahme sind mehrere vertikale Schlitze ausgebildet, die über den Umfang der Tubenwandung verteilt angeordnet sind. In jedem Schlitz sitzt ein Spannelement, das unter Wirkung eines Federelementes steht. Jedes Spannelement ist senkrecht zur Längsmittelachse der Tubenaufnahme verstellbar und wird von dem Federelement radial nach innen in Richtung der Längsmittelachse der Tubenaufnahme beaufschlagt. Wenn eine Tube in die Tubenaufnahme eingeführt wird, drückt die Tube die Spannelemente entgegen der jeweiligen Federkraft radial nach außen. Infolge der Reaktionskraft werden die Spannelemente radial von außen gegen die Außenwandung der Tube gedrückt, wodurch die Tube in der Tubenaufnahme festgeklemmt ist.Tube holders are known in various configurations. In particular, a tube holder has a housing with an upwardly opening tube receptacle into which a tube, which is preferably made of plastic or metal, is inserted with its head or cap section. A plurality of vertical slits are formed in the inner wall of the tube receptacle and are distributed over the circumference of the tube wall. A tensioning element, which is under the action of a spring element, sits in each slot. Each tensioning element can be adjusted perpendicularly to the longitudinal center axis of the tube receptacle and is acted upon by the spring element radially inward in the direction of the longitudinal center axis of the tube receptacle. When a tube is inserted into the tube receptacle, the tube presses the clamping elements radially outward against the respective spring force. As a result of the reaction force, the clamping elements are pressed radially from the outside against the outer wall of the tube, as a result of which the tube is clamped in the tube receptacle.

Die hier verwendeten Bezeichnungen "oben" und "unten" beziehen sich auf die übliche Ausrichtung eines Tubenhalters mit einer nach oben öffnenden Tubenaufnahme, in der die Tube mit ihrem Kopf- oder Kappenabschnitt von oben eingesetzt werden kann, so dass die Tube mit ihrem zu verschließenden Ende oberseitig aus dem Tubenhalter hervorsteht. Bei einer derartigen Ausrichtung des Tubenhalters erstreckt sich dessen Längsmittelachse vertikal und die radiale Verlagerung der Spannelemente erfolgt senkrecht dazu und somit im wesentlichen horizontal. Die Erfindung ist jedoch auf eine entsprechende Ausrichtung des Tubenhalters nicht beschränkt.The terms "top" and "bottom" used here refer to the usual orientation of a tube holder with a tube receptacle that opens upwards, in which the tube can be inserted with its head or cap section from above, so that the tube with its to-be-closed end protrudes from the top of the tube holder. When the tube holder is aligned in this way, it extends The longitudinal central axis is vertical and the radial displacement of the clamping elements takes place perpendicularly thereto and thus essentially horizontally. However, the invention is not limited to a corresponding orientation of the tube holder.

Aus der DE 10 2006 055 854 A1 ist ein Tubenhalter bekannt, bei der die Spannelemente um eine sich horizontal erstreckende Schwenkachse schwenkbar gelagert sind. Auf diese Weise ist es möglich, auch unterschiedliche Tubenformen oder der Tuben mit leichten Deformationen sicher zu halten.From the DE 10 2006 055 854 A1 a tube holder is known in which the clamping elements are pivotably mounted about a horizontally extending pivot axis. In this way it is possible to securely hold different tube shapes or tubes with slight deformations.

Mittels des bekannten Tubenhalters werden die Tuben kraftschlüssig gehalten. Beim Einführen der Tuben in den Tubenhalter werden die Spannelemente entgegen der Federkraft verdrängt, wodurch sie auf die Tube eine Spannkraft und somit eine erhöhte Reibungskraft ausüben. Bei der Entnahme der Tube wird diese nach oben aus dem Tubenhalter herausgezogen, wodurch die Spannelemente infolge der Federkraft wieder in ihre Ausgangsposition zurückkehren. Dieses Vorgehen lässt sich jedoch nur bei Tuben durchführen, die eine glatte, stufenlose Außenoberfläche und insbesondere eine glatte, stufenlose Kappe aufweisen. Insbesondere in der Kosmetikindustrie und in der Pharmaindustrie sind Tuben bekannt, deren Kappe Ausnehmungen oder Hinterschneidungen aufweisen. Wenn die Spannelemente eines Tubenhalters in diese Ausnehmungen eingreifen oder diese Hinterschneidungen hintergreifen, ist die Tube formschlüssig in dem Tubenhalter gehalten und lässt sich aus diesem durch Herausziehen nicht entfernen.The tubes are held in a non-positive manner using the well-known tube holder. When the tubes are inserted into the tube holder, the clamping elements are displaced against the spring force, as a result of which they exert a clamping force and thus an increased frictional force on the tube. When the tube is removed, it is pulled upwards out of the tube holder, whereby the clamping elements return to their starting position as a result of the spring force. However, this procedure can only be carried out with tubes which have a smooth, continuous outer surface and, in particular, a smooth, continuous cap. In particular in the cosmetics industry and in the pharmaceuticals industry, tubes are known whose caps have recesses or undercuts. When the clamping elements of a tube holder engage in these recesses or behind these undercuts, the tube is held in the tube holder with a positive fit and cannot be removed from it by pulling it out.

Der Erfindung liegt die Aufgabe zugrunde, einen Tubenhalter der genannten Art zu schaffen, in dem auch Tuben sicher gehalten und sicher freigegeben werden können, die insbesondere im Bereich ihrer Kappe Ausnehmungen und/oder Hinterschneidungen aufweisen.The object of the invention is to create a tube holder of the type mentioned, in which tubes are also held securely and can be released safely, which have recesses and/or undercuts, in particular in the area of their cap.

Diese Aufgabe wird erfindungsgemäß durch einen Tubenhalter mit den Merkmalen des Anspruchs 1 gelöst. Dabei ist ein Anschlagteil vorgesehen, das eine Steuerfläche aufweist und das relativ zu dem Spannelement so verlagerbar ist, dass das Spannelement an einer Anlagefläche mit der Steuerfläche in Anlage bringbar und dadurch um die Schwenkachse schwenkbar ist.According to the invention, this object is achieved by a tube holder having the features of claim 1 . A stop part is provided which has a control surface and which can be displaced relative to the tensioning element in such a way that the tensioning element can be brought into contact with the control surface on a bearing surface and can therefore be pivoted about the pivot axis.

Die Erfindung geht von der Grundüberlegung aus, dass das Spannelement durch Anlage an der Steuerfläche des Anschlagteils entgegen der Federkraft in eine Freigabestellung verschwenkt wird, in der es mit der Tube außer Eingriff steht, so dass die Tube aus dem Tubenhalter entnommen werden kann.The invention is based on the basic idea that the tensioning element is pivoted against the spring force into a release position by contacting the control surface of the stop part, in which it is disengaged from the tube, so that the tube can be removed from the tube holder.

Das Anschlagteil kann relativ zu dem Spannelement verlagert werden. Dies kann einerseits dadurch geschehen, dass das Anschlagteil feststeht und das Spannelement gegen das Anschlagteil bewegt und mit diesem in Anlage gebracht wird. Alternativ ist es auch möglich, dass das Anschlagteil verlagert und dadurch mit dem Spannelement in Anlage gebracht wird.The stop part can be displaced relative to the clamping element. On the one hand, this can be done in that the stop part is stationary and the tensioning element is moved against the stop part and brought into contact with it. Alternatively, it is also possible for the stop part to be displaced and thereby brought into contact with the tensioning element.

Vorzugsweise ist vorgesehen, dass das Spannelement durch Anlage an der Steuerfläche aus einer Eingriffsstellung, in der das Spannelement radial nach innen in die Tubenaufnahme hervorsteht, in die genannte Freigabestellung bringbar ist, in der es radial aus der Tubenaufnahme zurückgezogen ist. Durch das Zurückziehen des Spannelementes aus der Tubenaufnahme ist sichergestellt, dass die Tube mit dem Spannelement nicht mehr in Eingriff steht, auch wenn die Tube Ausnehmungen und/oder Hinterschneidungen besitzt. Somit kann die Tube nach oben aus der Tubenaufnahme entnommen werden. Darüber hinaus ist das Einsetzen einer neuen Tube in die Tubenaufnahme durch das Spannelement nicht behindert, wenn sich dieses in der Freigabestellung befindet.It is preferably provided that the tensioning element can be moved from an engaged position, in which the tensioning element protrudes radially inwards into the tube receptacle, into the said release position, in which it is radially retracted from the tube receptacle, by contacting the control surface. By withdrawing the clamping element from the tube holder, it is ensured that the tube with the clamping element is no longer engaged, even if the tube has recesses and / or undercuts. The tube can thus be removed upwards from the tube holder. In addition, the insertion of a new tube into the tube holder is not impeded by the clamping element when this is in the release position.

In einer möglichen Ausgestaltung der Erfindung ist vorgesehen, dass das Anschlagteil schalenförmig ausgebildet ist und einen sich konisch verjüngenden Querschnitt aufweist. Bei der Relativbewegung zwischen dem Spannelement und dem Anschlagteil kommt vorzugsweise das untere Ende des Spannelementes mit der Steuerfläche des Anschlagteils in Anlage und wird dadurch um seine Schwenkachse in die Freigabestellung verschwenkt. Die Steuerfläche kann zumindest abschnittsweise von einer Innenwandung des Anschlagteils gebildet sein.In one possible embodiment of the invention, it is provided that the stop part is designed in the shape of a shell and has a conically tapering cross section. During the relative movement between the clamping element and the stop part, the lower end of the clamping element preferably comes into contact with the control surface of the stop part and is thereby pivoted about its pivot axis into the release position. The control surface can be formed at least in sections by an inner wall of the stop part.

Wenn die Tube vertikal von oben in den Tubenhalter eingeführt wird, hat es sich als vorteilhaft erwiesen, wenn das Anschlagteil vertikal unterhalb des Spannelementes und unterhalb der Tubenaufnahme angeordnet ist. Auf diese Weise benötigt das Anschlagteil einen nur geringen Bauraum und behindert das Einführen und das Entnehmen der Tube nicht.If the tube is inserted vertically into the tube holder from above, it has proven to be advantageous if the stop part is arranged vertically below the clamping element and below the tube receptacle. In this way, the stop part requires only a small amount of space and does not impede the insertion and removal of the tube.

Die Schwenkachse des Spannelementes verläuft horizontal und insbesondere im Abstand senkrecht zur Längsmittelachse der Tubenaufnahme und vorzugsweise auch senkrecht zur radialen Verlagerungsbewegung des Spannelementes entgegen oder infolge der Federkraft. Vorzugsweise ist vorgesehen, dass die Schwenkachse in einen mittleren Abschnitt des Spannelementes angeordnet ist. In diesem Fall besitzt das Spannelement einen oberen 1. Abschnitt, der auf der einer oberen Öffnung der Tubenaufnahme zugewandten Seite der Schwenkachse oberhalb von dieser angeordnet ist, und einen unteren 2. Abschnitt, der auf der der Öffnung der Tubenaufnahme abgewandten Seite der Schwenkachse unterhalb von dieser angeordnet ist.The pivot axis of the clamping element runs horizontally and in particular at a distance perpendicular to the longitudinal center axis of the tube holder and preferably also perpendicular to the radial displacement movement of the clamping element against or as a result of the spring force. Provision is preferably made for the pivot axis to be arranged in a middle section of the tensioning element. In this case, the tensioning element has an upper 1. section which rests on an upper opening the tube receptacle facing side of the pivot axis is arranged above this, and a lower 2nd section, which is arranged on the side of the pivot axis facing away from the opening of the tube receptacle below this.

In bevorzugter Ausgestaltung der Erfindung ist vorgesehen, dass die Anlagefläche des Spannelementes am unteren 2. Abschnitt des Spannelementes ausgebildet ist. Dabei kann die Anlagefläche am unteren Ende des Spannelementes gebildet sein.In a preferred embodiment of the invention, it is provided that the contact surface of the clamping element is formed on the lower 2nd section of the clamping element. The contact surface can be formed at the lower end of the clamping element.

In Weiterbildung der Erfindung kann vorgesehen sein, dass das Spannelement nach unten aus dem Gehäuse des Tubenhalters hervorragt. Wenn das Gehäuse des Tubenhalters abgesenkt und/oder das Anschlagelement angehoben wird, wird das untere Ende des Spannelementes mit der Anlagefläche in das Anschlagteil eingeführt, kommt dort mit der Steuerfläche in Anlage und wird über die Steuerfläche bewegt, wodurch die Schwenkbewegung des Spannelementes bewirkt wird.In a further development of the invention it can be provided that the clamping element protrudes downwards from the housing of the tube holder. When the housing of the tube holder is lowered and/or the stop element is raised, the lower end of the clamping element with the contact surface is inserted into the stop part, comes into contact there with the control surface and is moved over the control surface, as a result of which the pivoting movement of the clamping element is effected.

In bevorzugter Ausgestaltung der Erfindung kann vorgesehen sein, dass das Spannelement, das vorzugsweise aus Kunststoff oder Metall besteht, bügelförmig oder leistenförmig ausgebildet ist.In a preferred embodiment of the invention, it can be provided that the tensioning element, which preferably consists of plastic or metal, is designed in the form of a bow or strip.

Vorzugsweise steht das Spannelement unter Wirkung von zumindest einem Federelement. Dabei kann zumindest ein 1. Federelement am oberen 1. Abschnitt des Spannelementes und somit oberhalb der Schwenkachse angeordnet sein. Das 1. Federelement übt auf das Spannelement eine radial nach innen, in Richtung der Längsmittelachse der Tubenaufnahme gerichtete Kraft aus, so dass das Spannelement bei eingesetzter Tube infolge des 1. Federelementes gegen die Tube gespannt ist.The clamping element is preferably under the action of at least one spring element. At least one 1st spring element can be arranged on the upper 1st section of the tensioning element and thus above the pivot axis. The first spring element exerts a radially inward force on the clamping element, directed in the direction of the central longitudinal axis of the tube receptacle, so that the clamping element when inserted Tube is stretched against the tube as a result of the 1st spring element.

In einer möglichen Ausgestaltung der Erfindung kann vorgesehen sein, dass die Schwenkachse des Spannelementes von angeformten Achsstummeln gebildet ist, die lose in eine sich radial nach innen erstreckende Radialnut eingesetzt sind, die in dem Gehäuse des Tubenhalters ausgebildet ist. Dabei besteht die Gefahr, dass das Spannelement durch das obere 1. Federelement soweit radial nach innen gedrückt wird, dass die Schwenkachse des Spannelementes aus der Radialnut radial nach außen wandert und gegebenenfalls sogar aus der Radialnut herausrutscht. Um dies zu verhindern, kann zumindest ein 2. Federelement am unteren 2. Abschnitt des Spannelementes an diesem angreifen. Infolge der Kraft des 2. Federelementes wird die Schwenkachse des Spannelementes sicher in der Radialnut gehalten.In a possible embodiment of the invention it can be provided that the pivot axis of the clamping element is formed by integrally formed stub axles which are loosely inserted into a radially inwardly extending radial groove which is formed in the housing of the tube holder. There is a risk that the tensioning element is pressed radially inwards by the upper 1st spring element so far that the pivot axis of the tensioning element migrates radially outwards from the radial groove and possibly even slips out of the radial groove. In order to prevent this, at least a 2nd spring element can act on the lower 2nd section of the tensioning element. Due to the force of the second spring element, the swivel axis of the clamping element is held securely in the radial groove.

Vorzugsweise sollte das durch das obere 1. Federelement an der Schwenkachse wirkende Drehmoment größer als das durch das untere 2. Federelement an der Schwenkachse erzeugte Gegenmoment sein. Dadurch ist gewährleistet, dass das Spannelement in seiner Eingriffsstellung bleibt.Preferably, the torque acting through the upper 1st spring element on the pivot axis should be greater than the counter-torque generated by the lower 2nd spring element on the pivot axis. This ensures that the clamping element remains in its engaged position.

Um eine sichere Halterung der Tube innerhalb des Tubenhalters zu gewährleisten, sollten mehrere Spannelemente über den Umfang der Innenwandung der Tubenaufnahme vorzugsweise gleichmäßig verteilt angeordnet sein. Es hat sich als sinnvoll erwiesen, zumindest 2 und insbesondere 3, 4 oder 5 Spannelemente für den Tubenhalter vorzusehen.In order to ensure that the tube is held securely within the tube holder, several clamping elements should be arranged, preferably evenly distributed over the circumference of the inner wall of the tube holder. It has proven useful to provide at least 2 and in particular 3, 4 or 5 clamping elements for the tube holder.

In Weiterbildung der Erfindung kann vorgesehen sein, dass jedes Spannelement in einer Ausnehmung oder einer Durchbrechung des Gehäuses angeordnet ist. Vorzugsweise erstreckt sich jede Ausnehmung oder Durchbrechung in Längsrichtung und somit parallel zur Längsmittelachse der Tubenaufnahme.In a further development of the invention it can be provided that each clamping element is in a recess or an opening of the housing is arranged. Each recess or opening preferably extends in the longitudinal direction and thus parallel to the longitudinal central axis of the tube receptacle.

Um einen guten formschlüssigen Eingriff des Spannelementes in eine Ausnehmung oder Hinterschneidung der Tube zu erreichen, kann das Spannelement an seinem oberen Ende eine radial nach innen hervorstehenden Haltevorsprung aufweisen.In order to achieve good form-fitting engagement of the clamping element in a recess or undercut of the tube, the clamping element can have a retaining projection protruding radially inwards at its upper end.

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

Fig.
1 eine perspektivische Seitenansicht des erfindungsgemäßen Tubenhalters,
Fig. 2
einen Längsschnitt durch den Tubenhalter gemäß Figur 1 in der Eingriffsstellung und
Fig. 3
den Tubenhalter gemäß Figur 2 in der Freigabestellung.
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 is a perspective side view of the tube holder according to the invention,
2
according to a longitudinal section through the tube holder figure 1 in the engaged position and
3
according to the tube holder figure 2 in the release position.

Gemäß Figur 1 weist ein Tubenhalter 10 ein Gehäuse 11 mit einem umlaufenden Flansch 11a auf. Das Gehäuse 11 besteht aus Kunststoff und besitzt im Inneren eine nach oben öffnende Tubenaufnahme 12, die an die Form des Kopfes oder der Kappe der aufzunehmenden Tube angepasst ist. In der Wandung der Tubenaufnahme 12 sind vier über den Umfang verteilt angeordnete, sich vertikal erstreckende, schlitzförmige Ausnehmungen 15 ausgebildet, die die Wandung des Gehäuses 11 vollständig durchdringen.According to figure 1 For example, a tube holder 10 has a housing 11 with a peripheral flange 11a. The housing 11 is made of plastic and has an upwardly opening tube receptacle 12 inside, which is adapted to the shape of the head or the cap of the tube to be received. In the wall of the tube receptacle 12 there are four vertically extending, slot-shaped recesses 15 which are distributed over the circumference and completely penetrate the wall of the housing 11 .

In jeder Ausnehmung 15 ist ein vertikal ausgerichtetes, bügelförmiges Spannelement 14 angeordnet. Jedes Spannelement ist um eine horizontale Schwenkachse 18 schwenkbar am Gehäuse 11 gelagert, wie es in Figur 2 durch die Doppelpfeile S angedeutet ist. Die Schwenkachse 18 ist im mittleren Bereich jedes Spannelementes 14 angeordnet, so dass das Spannelement 14 einen oberen 1. Abschnitt 14.1, der auf der der Öffnung 12b der Tubenaufnahme 12 zugewandten Seite der Schwenkachse 18 angeordnet ist, und einen unteren 2. Abschnitt 14.2 aufweist, der auf der der Öffnung 12b der Tubenaufnahme 12 abgewandten unteren Seite der Schwenkachse 18 angeordnet ist. Am unteren Ende jedes Spannelementes 14 ist eine gekrümmte Anlagefläche 14a ausgebildet.In each recess 15 a vertically aligned, bow-shaped clamping element 14 is arranged. Each clamping element is mounted on the housing 11 so that it can pivot about a horizontal pivot axis 18, as shown in figure 2 is indicated by the double arrows S. The pivot axis 18 is arranged in the central region of each clamping element 14, so that the clamping element 14 has an upper 1st section 14.1, which is arranged on the side of the pivot axis 18 facing the opening 12b of the tube receptacle 12, and a lower 2nd section 14.2. which is arranged on the lower side of the pivot axis 18 facing away from the opening 12b of the tube receptacle 12 . At the lower end of each clamping element 14, a curved contact surface 14a is formed.

Aus Figur 2 ist ersichtlich, dass die Schwenkachse 18 jedes Spannelements 14 in eine Radialnut 22 des Gehäuses 11 lose eingesetzt ist. Die Radialnut 22 erstreckt sich senkrecht zur Längsmittelachse L der Tubenaufnahme und öffnet radial nach außen.Out of figure 2 it can be seen that the pivot axis 18 of each clamping element 14 is loosely inserted into a radial groove 22 of the housing 11 . The radial groove 22 extends perpendicularly to the longitudinal central axis L of the tube receptacle and opens radially outwards.

In ihrem oberen 1. Abschnitt 14.1 sind alle Spannelemente 14 von zwei umlaufenden 1. Federelementen in Form von Ringfedern umgeben, die auf die Spannelemente 14 in ihrem oberen 1. Abschnitt 14.1 eine radial nach innen in Richtung der Längsmittelachse L der Tubenaufnahme 12 gerichtete Spannkraft ausüben.In their upper 1st section 14.1, all clamping elements 14 are surrounded by two circumferential 1st spring elements in the form of annular springs, which exert a clamping force on the clamping elements 14 in their upper 1st section 14.1, directed radially inwards in the direction of the longitudinal center axis L of the tube receptacle 12 .

In gleichartiger Weise sind die unteren 2. Abschnitte 14.2 der Spannelemente 14 von einem 2. Federelement 17 in Form einer Ringfeder umgeben, die die Spannelemente 14 in ihrem unteren 2. Abschnitt mit einer radial nach innen zur Längsmittelachse L der Tubenaufnahme 12 gerichteten 2. Federkraft beaufschlagt. Das untere 2. Federelement 17 dient dazu, die Schwenkachsen 18 der Spannelemente 14 in der Radialnut 22 zu halten.In a similar manner, the lower 2nd sections 14.2 of the clamping elements 14 are surrounded by a 2nd spring element 17 in the form of an annular spring which, in its lower 2nd section, tensions the clamping elements 14 with a 2nd spring force directed radially inwards towards the longitudinal central axis L of the tube receptacle 12 applied. The lower 2nd spring element 17 serves to to keep the pivot axes 18 of the clamping elements 14 in the radial groove 22.

Jedes Spannelement 14 weist an seinem oberen Ende einen radial nach innen hervorstehenden Haltevorsprung 19 auf, der mit einer Ausnehmung oder eine Hinterschneidung einer Tube in Eingriff treten kann.At its upper end, each clamping element 14 has a retaining projection 19 which protrudes radially inwards and which can engage with a recess or an undercut of a tube.

Unterhalb der Spannelemente 14 ist mit Abstand ein nach oben, d.h. in Richtung der Spannelemente 14 schalenförmig öffnendes Anschlagteil 13 angeordnet, das einen sich konisch verjüngenden inneren Querschnitt aufweist. Die schräg nach unten und innen gerichtete Innenwandung 21 des Anschlagteils 13 bildet eine Steuerfläche 20.Below the clamping elements 14, at a distance, is arranged a stop part 13 which opens in a bowl-shaped manner upwards, i.e. in the direction of the clamping elements 14, and which has a conically tapering inner cross-section. The inner wall 21 of the stop part 13, which is directed obliquely downwards and inwards, forms a control surface 20.

Wie es durch den Doppelpfeil V angeordnet ist, ist das Anschlagteil 13 relativ zu den Spannelementen 14 vertikal verlagerbar. Im Folgenden wird beispielhaft davon ausgegangen, dass das Anschlagteil 13 in Richtung der Spannelemente 14 angehoben werden kann.As indicated by the double arrow V, the stop part 13 is vertically displaceable relative to the clamping elements 14 . In the following it is assumed, for example, that the stop part 13 can be raised in the direction of the clamping elements 14 .

Wenn das Anschlagteil 14 in Richtung der Spannelemente 14 angehoben wird, kommen die unteren Anlageflächen 14a der Spannelemente 14 mit der Steuerfläche 20 bzw. der Innenwandung 21 des Anschlagteils 13 in Anlage. Bei einer weiteren Anhebung des Anschlagteils 13 werden die unteren Enden der Spannelemente 14 infolge der Anlage zwischen den Anlageflächen 14a und der Steuerfläche 20 aufeinander zu bewegt (siehe Figur 3), wodurch jedes Spannelement 14 um seine Schwenkachse 18 verschwenkt wird. Dies führt dazu, dass die entgegengesetzten oberen Enden der Spannelemente 14 voneinander weg bewegt werden und die in Figur 3 dargestellte Freigabestellung einnehmen, in der die oberen Enden der Spannelemente 14 und auch deren Haltevorsprünge 19 entgegen der Kraft der 1. Federelemente 16 vollständig in die Ausnehmungen 15 des Gehäuses 11 zurückgezogen sind. Die Tubenaufnahme 12 ist somit frei und es ist möglich, eine Tube von oben durch die obere Öffnung 12b der Tubenaufnahme 12 einzuführen oder eine vorher in der Tubenaufnahme 12 befindliche Tube nach oben herauszuziehen.When the stop part 14 is raised in the direction of the clamping elements 14, the lower contact surfaces 14a of the clamping elements 14 come into contact with the control surface 20 or the inner wall 21 of the stop part 13. If the stop part 13 is raised further, the lower ends of the clamping elements 14 are moved towards one another as a result of the contact between the contact surfaces 14a and the control surface 20 (see FIG figure 3 ), whereby each clamping element 14 is pivoted about its pivot axis 18. This results in the opposite upper ends of the clamping elements 14 being moved away from one another and the in figure 3 take the release position shown, in which the upper ends of the Clamping elements 14 and also their holding projections 19 are completely retracted into the recesses 15 of the housing 11 against the force of the first spring elements 16 . The tube holder 12 is thus free and it is possible to insert a tube from above through the upper opening 12b of the tube holder 12 or to pull out a tube previously located in the tube holder 12 upwards.

Wenn eine neue Tube in die Tubenaufnahme 12 eingeführt ist, wird das Anschlagteil 13 wieder abgesenkt, wodurch die Spannelemente 14 von der Steuerfläche 20 des Anschlagteils 13 freikommen und infolge der Wirkung der 1. Federelemente 16 in eine radial nach innen in die Tubenaufnahme 12 vorstehende Eingriffsstellung geschwenkt werden.When a new tube is inserted into the tube receptacle 12, the stop part 13 is lowered again, as a result of which the clamping elements 14 are released from the control surface 20 of the stop part 13 and, as a result of the action of the first spring elements 16, into an engaged position which protrudes radially inwards into the tube receptacle 12 be panned.

Claims (14)

  1. Tube holder for a tube filling machine, comprising a housing (11) which has an upwardly opening tube receptacle (12) into which a tube can be inserted by one end region thereof, wherein at least one clamping element (14) is arranged in the region of an inner wall (12a) of the tube receptacle (12), by means of which clamping element, under the action of at least one spring element (16, 17), a clamping force can be applied that acts on the inserted tube radially from the outside, wherein the clamping element (14) is pivotably mounted about a horizontally extending pivot axis (18), characterized by a stop part (13) which has a control surface (20) and which is displaceable relative to the clamping element (14) such that the clamping element (14) can be brought into contact with the control surface (20) via a contact surface (14a), and is thereby pivotable about the pivot axis (18).
  2. Tube holder according to Claim 1, characterized in that by means of contact at the control surface (20) the clamping element (14) can be brought out of an engagement position, in which the clamping element (14) projects radially inwards into the tube receptacle (12), and into a release position in which it is pulled back radially outwards out of the tube receptacle (12).
  3. Tube holder according to either Claim 1 or Claim 2, characterized in that the stop part (13) is shell-shaped and has a conically tapering cross-section.
  4. Tube holder according to any one of Claims 1 to 3, characterized in that the control surface (20) is formed at least in part by an inner wall (21) of the stop part (13).
  5. Tube holder according to any one of Claims 1 to 4, characterized in that the stop part (13) is arranged vertically below the clamping element (14).
  6. Tube holder according to any one of Claims 1 to 5, characterized in that the clamping element (14) has an upper first portion (14.1) which is arranged above the pivot axis (18) on the side of said pivot axis facing an upper opening (12b) of the tube receptacle (12), and a lower second portion (14.2) which is arranged below the pivot axis (18) on the side of said pivot axis facing away from the opening (12b) of the tube receptacle (12).
  7. Tube holder according to Claim 6, characterized in that the contact surface (14a) is formed on the lower second portion (14.2) of the clamping element (14).
  8. Tube holder according to either Claim 6 or Claim 7, characterized in that the clamping element (14) projects from the housing (11) on the underside thereof.
  9. Tube holder according to any one of Claims 1 to 8, characterized in that the clamping element (14) is arcuate or strip-shaped.
  10. Tube holder according to any one of Claims 1 to 9, characterized in that the clamping element (14) is under the action of at least two spring elements (16, 17).
  11. Tube holder according to Claim 10, characterized in that at least one first spring element (16) acts on the upper first portion (14.1) of the clamping element (14), and/or at least one second spring element (17) acts on the lower second portion (14.2) of the clamping element (14).
  12. Tube holder according to any one of Claims 1 to 11, characterized in that a plurality of clamping elements (14) are arranged distributed over the periphery of the tube receptacle (12).
  13. Tube holder according to any one of Claims 1 to 12, characterized in that each clamping element (14) is arranged in a recess (15) of the housing (11).
  14. Tube holder according to any one of Claims 1 to 13, characterized in that the clamping element (14) has a radially inwardly projecting holding projection (19) at its upper end.
EP19795078.5A 2018-12-12 2019-10-15 Tube holder for a tube filling machine Active EP3894326B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018131974.6A DE102018131974A1 (en) 2018-12-12 2018-12-12 Tube holder for a tube filling machine
PCT/EP2019/000294 WO2020119935A1 (en) 2018-12-12 2019-10-15 Tube holder for a tube-filling machine

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EP3894326A1 EP3894326A1 (en) 2021-10-20
EP3894326B1 true EP3894326B1 (en) 2022-12-14

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EP19795078.5A Active EP3894326B1 (en) 2018-12-12 2019-10-15 Tube holder for a tube filling machine

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EP (1) EP3894326B1 (en)
DE (1) DE102018131974A1 (en)
WO (1) WO2020119935A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020132995A1 (en) 2020-12-10 2022-06-15 Iwk Verpackungstechnik Gmbh tube holder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3733687A1 (en) * 1986-10-06 1988-04-14 Norden Packaging Mach DEVICE FOR RECORDING TUBES IN A TUBE FILLING MACHINE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3147018A (en) * 1962-08-01 1964-09-01 Reichert August Self-centering holder for automatic tube filling machines and a jaw member therefor
DE1275438B (en) * 1966-02-25 1968-08-14 Karlsruhe Augsburg Iweka Self-centering holder for tubes on a tube filling and closing machine
DE102006055854A1 (en) 2006-11-27 2008-05-29 Iwk Verpackungstechnik Gmbh Tube holder for a tube filling machine
AU2015382465B2 (en) * 2015-02-11 2018-01-18 Colgate-Palmolive Company Tube holder for a filling machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3733687A1 (en) * 1986-10-06 1988-04-14 Norden Packaging Mach DEVICE FOR RECORDING TUBES IN A TUBE FILLING MACHINE

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DE102018131974A1 (en) 2020-06-18
WO2020119935A1 (en) 2020-06-18
EP3894326A1 (en) 2021-10-20

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