EP2298453B1 - Extrusion device - Google Patents

Extrusion device Download PDF

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Publication number
EP2298453B1
EP2298453B1 EP10174106.4A EP10174106A EP2298453B1 EP 2298453 B1 EP2298453 B1 EP 2298453B1 EP 10174106 A EP10174106 A EP 10174106A EP 2298453 B1 EP2298453 B1 EP 2298453B1
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EP
European Patent Office
Prior art keywords
ring gear
locking element
out device
circumference
gear
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EP10174106.4A
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German (de)
French (fr)
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EP2298453A2 (en
EP2298453A3 (en
Inventor
Christian Hefele
Hans Peter Lederle
Zoran Mitrovic
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Hilti AG
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Hilti AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
    • B05C17/0103—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like with electrically actuated piston or the like

Definitions

  • the invention relates to a squeezing device for mass-containing container, referred to in the preamble of claim 1. Art.
  • Containers include, for example cartridges with one or more receiving spaces for one or more components of the mass to be applied, the direct or z.
  • B. in foil bags are provided in the receiving spaces of the cartridge.
  • the term "container” also includes foil bags filled with one or more components of the mass to be delivered, which are inserted into a separate receiving body or arranged on the ejection device.
  • a squeezing device for mass-containing container which has a respect to the receiving space displaceable piston rod and a squeezing device.
  • the ejection device comprises a drive wheel for advancing the piston rod, a motor for driving the drive wheel and an intermediate between the drive wheel and the engine planetary gear with a Gereterotationsachse and with a ring gear, which is provided at its periphery with a plurality of mutually spaced recesses. Further, an operation switch for operating the motor is provided.
  • a blocking element for the ring gear is provided, which can be transferred from a blocking position for blocking the ring gear of the planetary gear in a release position for releasing this ring gear.
  • the motor Upon actuation of the actuating switch, the motor is activated, for. B. via an appropriate control or powered directly.
  • the drive wheel is set in rotation via the planetary gear and advanced the piston rod over a predetermined amount. With each advance of the piston rod, a corresponding amount of the mass is discharged through a discharge opening.
  • the Actuator switch When operating the Actuator switch is simultaneously transferred to the operating switch directly connected to the blocking element in the release position along a linear guide slot.
  • the blocking element In the unactuated state of the operating switch, the blocking element is in the blocking position in which the ring gear is blocked and in which the piston rod, z. B. for inserting a new or other container in the receiving space in their initial position can be transferred.
  • a disadvantage of the known solution is that the drive train is complex in construction and the blocking element requires a large space within the extrusion device.
  • the object of the invention is to provide a squeezing device for mass-containing container, which does not have the aforementioned disadvantages and in particular allows easy return of at least one piston rod to its initial position.
  • a separate unlocking switch for actuating the locking element is provided and the locking element is for transferring the same from the locking position into the release position about a pivot axis pivotable.
  • the inventive extrusion device is characterized in that the pivot axis of the locking element extends transversely to the gear rotation axis of the planetary gear.
  • the installation space required in the squeezing device is significantly reduced compared to a linearly displaceable blocking element, which makes possible the formation of a compact and easily manageable squeezing device.
  • the blocking element can be easily transferred from the blocking position into the release position or from the release position into the blocking position.
  • a force reduction can be provided in the pivotable locking element, which ensures easy operation of the locking element in the use of the squeezing and which is not or only partially feasible in an axially displaceable locking element.
  • the drive train of the ejection device is designed such that the at least one piston rod in the release position of the locking element can be easily moved manually relative to the receiving space.
  • the unlocking switch for the blocking element can be actuated independently of the actuating switch.
  • the operating switch may be a potentiometer switch which activates the motor based on the path taken by the operating switch. This type of operating switch allows the application of user-adjusted Auspressmengen the mass in the container. Is the blocking element, as in a squeezing according to the DE 34 28 202 A1 , Coupled directly with the operating switch, it must be fully actuated for the transfer of the blocking element from the blocking position to the release position.
  • the planetary gear is advantageously a transmission gear and is further advantageously designed in multiple stages.
  • the advantageous multiple stages of the planetary gear are arranged coaxially to each other, for example, on a Gereterotationsachse, which allows a simple and compact design of the drive train.
  • the unlocking switch and the blocking element are two separate elements which can be brought into operative connection for actuating the blocking element as needed.
  • the two-part design allows the production of the same with simple and thus economic forms and a simple replacement of the corresponding element, if this is worn over a certain period of use.
  • the unlocking switch and the blocking element form a common element.
  • the pivot axis of the blocking element extends transversely to the gear rotational axis of the planetary gear, whereby the blocking element can be arranged in a particularly space-saving manner for pivoting and swiveling into the recesses of the ring gear.
  • the pivot axis is perpendicular to a plane containing the gear rotation axis.
  • the squeezing device preferably has a housing and the actuating switch for actuating the motor is provided on a housing side of the housing of the squeezing device facing the receiving space, and the unlocking switch is provided on a housing side of the housing facing away from the receiving space.
  • the housing side facing the receiving space is, for example, a portion of a handle of the squeezing device, which advantageously extends substantially perpendicular with respect to the longitudinal extent of the at least one piston rod or to the squeezing direction.
  • the actuating switch is advantageously operable by the index finger and / or the middle finger, wherein the unlocking switch is actuated by the thumb of the same hand.
  • the squeezing is particularly easy to use and manageable.
  • the blocking element is spring-loaded via a spring element, whereby the blocking element is automatically forced into the preferred position.
  • the blocking element is spring-loaded in such a way that it is in the blocking position in the unactuated state of the actuating switch.
  • the spring element is advantageously a helical spring and particularly advantageously a helical compression spring.
  • the blocking element advantageously extends from the pivot axis in two, substantially opposite directions, wherein a part of the locking element penetratable into the recesses of the ring gear engagement portion and the other part an actuating portion with an engagement surface for the spring element and further advantageous with an attack surface for forms the unlocking switch.
  • the recesses on the circumference of the ring gear grooves with mutually parallel side walls which is given in the blocking position of the locking element as a result of this embodiment, a blockage of the ring gear in both rotational directions of the ring gear.
  • the recesses on the circumference of the ring gear grooves which each have a starting from an initial depth, in the direction of the circumference in depth decreasing bottom portion with respect to the circumference of the ring gear, whereby in the blocking position of the locking element is a blockage of the ring gear in given a corresponding direction of rotation of the ring gear and in the other direction of rotation automatic disengagement of the locking element is possible.
  • the bottom section which decreases in depth, runs out towards the circumference of the ring gear, whereby the grooves do not have a side wall on one side. In such a trained ring gear this is advantageously arranged such that the at least one piston rod, z. B. for a fast feed when changing to a semi-pressed container or for the transport of the squeezing, can be manually advanced in a direction of rotation of the ring gear without actuation of the locking element.
  • the in the FIGS. 1 to 4 illustrated squeezing device 11 for mass-containing container 33 has a receiving space 12 for the container 33, a displaceable relative to the receiving space 12, perforated piston rod 13 and an electrically actuated squeezing device 16.
  • a pressure piston 14 is provided for acting on the container 33 and the mass therein.
  • the squeezing device 16 is arranged in a housing 17, from which extends a handle 30 which has a housing side 18 facing the receiving space 12. At the free end of the handle 30, a battery pack 19 is releasably fixed.
  • the press-out device 16 comprises a toothed wheel as a drive wheel 21, whose teeth engage in the advancement of the piston rod 13 in their perforations. Furthermore, the ejection device 16 comprises a motor 22 for driving the drive wheel 21 and a multi-stage planetary gear 23 interposed between the drive wheel 21 and the motor 22.
  • the planetary gear 23 has a gear rotation axis 24 and, in addition to other transmission components such as sun gears and planet gears, a ring gear 25 on.
  • the ring gear 25 is provided at its periphery 29 with a plurality of mutually spaced recesses 26.
  • the recesses 26 on the circumference 29 of the ring gear 25 are grooves with mutually parallel side walls 27th
  • a blocking element 36 is provided which is pivotable about a pivot axis 37 from a blocking position (FIG. Fig. 2 ) for blocking the ring gear 25 of the planetary gear 23 in a release position ( Fig. 3 ) is pivotable to release this ring gear (25).
  • the pivot axis 37 of the locking element 36 extends transversely to the gear rotation axis 24 of the planetary gear 23.
  • a separate unlocking switch 41 is provided, which is fixed via a hinge 42 pivotally mounted on the housing 17.
  • a potentiometer switch is provided as an actuating switch 31 for actuating the motor 22.
  • the unlocking switch 41 is provided on the receiving space 12 facing away from the housing side 20 of the housing 17. In this example, the unlocking switch 41 is located at the rear end of the housing 17 with respect to the squeezing direction of the squeezing device 11.
  • the locking member 36 extends with respect to the pivot axis in two opposite directions, wherein the one portion forms an engaging into the recesses 26 of the ring gear 25 engaging portion 38 of the locking element 36 and the other portion of the actuating portion 39 of the locking element 36.
  • a helical compression spring 46 is provided as a spring element which urges the locking element 36 and this forces in its blocking position as the preferred position of the locking element 36.
  • the motor 22 Upon actuation of the actuating switch 31, the motor 22 is supplied with power from the battery pack 19 and activated via a controller, not shown here.
  • the control is set so that the motor 22 is energized only for a certain time.
  • the motor 22 rotates the components of the planetary gear 23 in rotation, wherein the ring gear 25 is locked via the locking element 36.
  • the torque generated by the motor 22 is transmitted to the drive wheel 21, which in turn advances the piston rod 13 by the appropriate amount in the direction of the receiving space 12. This process is repeated until the desired amount of mass contained in the container 33 is applied.
  • the unlocking switch 41 is actuated.
  • the blocking element 36 is pivoted against the spring force of the spring element 46 about the pivot axis 37 and transferred into its release position ( Fig. 3 ), in which the ring gear 25 can rotate freely.
  • the piston rod 13 can be manually withdrawn or advanced despite the constant with the piston rod 13 in engagement drive wheel 21, since this rotates empty due to the now freely rotatable ring gear 25.
  • the blocking element 36 is returned by the spring element 46 into its blocking position (FIG. Fig. 2 ) forced.
  • the container 33 is now removed from the receiving space 12 of the extrusion device 11.
  • the operating switch 31 is actuated directly after inserting the new container into the receiving space 12, so that the piston rod 13 is advanced by the motor 22 until it rests on the container or on the mass to be squeezed out.
  • ring gear 55 is also provided at its periphery 59 with a plurality of mutually spaced recesses 56 which are formed as grooves.
  • These recesses 56 each have, with respect to the circumference 59 of the ring gear 55, a bottom portion 60 extending from an initial depth T and decreasing in the direction of the circumference 59 in the depth U.
  • the bottom portion 60 of the recesses 56 extends in each case ramp-shaped.
  • the recesses 56 thus each have two different-length side walls 57 and 61, wherein the side wall 61 is smaller than the side wall 57.
  • the bottom section which decreases in depth, runs out toward the circumference 59 of the ring gear 55, so that the recesses formed as grooves each have only the side wall 57.
  • the engagement portion 68 of the pivotable about the pivot axis 67 locking element 66 is for locking the ring gear 55 on the side wall 57 of the recess 56 at.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Gear Transmission (AREA)
  • Food-Manufacturing Devices (AREA)
  • Transmission Devices (AREA)

Description

Die Erfindung betrifft eine Auspressvorrichtung für Massen enthaltende Gebinde, der im Oberbegriff des Patentanspruchs 1 genannten Art.The invention relates to a squeezing device for mass-containing container, referred to in the preamble of claim 1. Art.

Eine derartige Auspressvorrichtung dient dem Ausbringen von in Gebinden verpackten Massen, wie Mörtel- oder Dichtmassen, an einem Applikationsort. Gebinde umfassen beispielsweise Kartuschen mit einem oder mehreren Aufnahmeräumen für eine oder mehrere Komponenten der auszubringenden Masse, die direkt oder z. B. in Folienbeutel verpackt in den Aufnahmeräumen der Kartusche vorgesehen sind. Der Begriff "Gebinde" umfasst zudem mit einer oder mehreren Komponenten der auszubringenden Masse befüllte Folienbeutel, die in einen separaten oder an der Auspressvorrichtung angeordneten Aufnahmekörper eingesetzt werden.Such a squeezing device serves to dispense packaged masses, such as mortar or sealants, at an application site. Containers include, for example cartridges with one or more receiving spaces for one or more components of the mass to be applied, the direct or z. B. in foil bags are provided in the receiving spaces of the cartridge. The term "container" also includes foil bags filled with one or more components of the mass to be delivered, which are inserted into a separate receiving body or arranged on the ejection device.

Aus der DE 34 28 202 A1 ist eine Auspressvorrichtung für Massen enthaltende Gebinde bekannt, die eine gegenüber dem Aufnahmeraum verschiebbare Kolbenstange und eine Auspresseinrichtung aufweist. Die Auspresseinrichtung umfasst ein Antriebsrad für den Vorschub der Kolbenstange, einen Motor für den Antrieb des Antriebsrades sowie ein zwischen dem Antriebsrad und dem Motor zwischengeschaltetes Planetengetriebe mit einer Getrieberotationsachse und mit einem Hohlrad, das an seinem Umfang mit mehreren, zueinander beabstandeten Ausnehmungen versehen ist. Weiter ist ein Betätigungsschalter zur Betätigung des Motors vorgesehen. Zudem ist ein Sperrelement für das Hohlrad vorgesehen, das von einer Sperrstellung zum Blockieren des Hohlrades des Planetengetriebes in eine Freigabestellung zur Freigabe dieses Hohlrades überführbar ist.From the DE 34 28 202 A1 a squeezing device for mass-containing container is known, which has a respect to the receiving space displaceable piston rod and a squeezing device. The ejection device comprises a drive wheel for advancing the piston rod, a motor for driving the drive wheel and an intermediate between the drive wheel and the engine planetary gear with a Getrieberotationsachse and with a ring gear, which is provided at its periphery with a plurality of mutually spaced recesses. Further, an operation switch for operating the motor is provided. In addition, a blocking element for the ring gear is provided, which can be transferred from a blocking position for blocking the ring gear of the planetary gear in a release position for releasing this ring gear.

Bei der Betätigung des Betätigungsschalters wird der Motor aktiviert, z. B. über eine entsprechende Steuerung oder direkt bestromt. Dabei wird über das Planetengetriebe das Antriebsrad in Rotation versetzt und die Kolbenstange über ein vorbestimmtes Mass vorgeschoben. Bei jedem Vorschub der Kolbenstange wird eine entsprechende Menge der Masse durch eine Ausgabeöffnung ausgebracht. Bei der Betätigung des Betätigungsschalters wird gleichzeitig das mit dem Betätigungsschalter direkt verbundene Sperrelement in die Freigabestellung entlang einer linearen Führungskulisse überführt. Im unbetätigten Zustand des Betätigungsschalters befindet sich das Sperrelement in der Sperrstellung, in welcher das Hohlrad blockiert ist und in welcher die Kolbenstange, z. B. zum Einlegen eines neuen oder anderen Gebindes in den Aufnahmeraum, in ihre Ausgangsstellung überführbar ist.Upon actuation of the actuating switch, the motor is activated, for. B. via an appropriate control or powered directly. In this case, the drive wheel is set in rotation via the planetary gear and advanced the piston rod over a predetermined amount. With each advance of the piston rod, a corresponding amount of the mass is discharged through a discharge opening. When operating the Actuator switch is simultaneously transferred to the operating switch directly connected to the blocking element in the release position along a linear guide slot. In the unactuated state of the operating switch, the blocking element is in the blocking position in which the ring gear is blocked and in which the piston rod, z. B. for inserting a new or other container in the receiving space in their initial position can be transferred.

Nachteilig an der bekannten Lösung ist, dass der Antriebsstrang aufwändig im Aufbau ist und das Sperrelement einen grossen Bauraum innerhalb der Auspressvorrichtung benötigt.A disadvantage of the known solution is that the drive train is complex in construction and the blocking element requires a large space within the extrusion device.

Eine gattungsgemässe Auspressvorrichtung ist aus der EP 0 836 534 A1 bekannt.A generic Auspressvorrichtung is from the EP 0 836 534 A1 known.

Aufgabe der Erfindung ist es, eine Auspressvorrichtung für Massen enthaltende Gebinde zu schaffen, welche die vorgenannten Nachteile nicht aufweist und insbesondere eine einfache Rückführung der zumindest einen Kolbenstange in ihre Ausgangsstellung ermöglicht.The object of the invention is to provide a squeezing device for mass-containing container, which does not have the aforementioned disadvantages and in particular allows easy return of at least one piston rod to its initial position.

Die Aufgabe ist durch die Merkmale des unabhängigen Anspruchs gelöst. Vorteilhafte Weiterbildungen sind in den Unteransprüchen dargelegt.The object is solved by the features of the independent claim. Advantageous developments are set forth in the subclaims.

Bei einer gattungsgemässen Auspressvorrichtung ist ein separater Entriegelungsschalter zur Betätigung des Sperrelementes vorgesehen und das Sperrelement ist zum Überführen desselben von der Sperrstellung in die Freigabestellung um eine Schwenkachse schwenkbar. Die erfindungsgemässe Auspressvorrichtung ist dadurch gekennzeichnet, dass die Schwenkachse des Sperrelementes quer zur Getrieberotationsachse des Planetengetriebes verläuft.In a generic Auspressvorrichtung a separate unlocking switch for actuating the locking element is provided and the locking element is for transferring the same from the locking position into the release position about a pivot axis pivotable. The inventive extrusion device is characterized in that the pivot axis of the locking element extends transversely to the gear rotation axis of the planetary gear.

Durch das verschwenkbare Sperrelement reduziert sich gegenüber einem linear verschiebbaren Sperrelement der in der Auspressvorrichtung benötigte Bauraum massgeblich, was die Ausbildung einer im Aufbau kompakten und leicht handhabbaren Auspressvorrichtung ermöglicht. Dabei ist das Sperrelement einfach von der Sperrstellung in die Freigabestellung beziehungsweise von der Freigabestellung in die Sperrstellung überführbar. Zudem kann bei dem verschwenkbaren Sperrelement eine Kraftuntersetzung vorgesehen werden, welche eine leichte Betätigung des Sperrelementes im Gebrauch der Auspressvorrichtung gewährleistet und die bei einem axial versetzbaren Sperrelement nicht oder nur bedingt umsetzbar ist.Due to the pivotable blocking element, the installation space required in the squeezing device is significantly reduced compared to a linearly displaceable blocking element, which makes possible the formation of a compact and easily manageable squeezing device. In this case, the blocking element can be easily transferred from the blocking position into the release position or from the release position into the blocking position. In addition, a force reduction can be provided in the pivotable locking element, which ensures easy operation of the locking element in the use of the squeezing and which is not or only partially feasible in an axially displaceable locking element.

In der Sperrstellung des Sperrelementes greift ein Abschnitt desselben in eine der Ausnehmungen des Hohlrades ein und arretiert dieses, so dass die Rotation des Hohlrades blockiert ist. In der Freigabestellung liegt der entsprechende Abschnitt des Sperrelementes ausserhalb der Ausnehmungen des Hohlrades und das Hohlrad kann frei drehen. Der Antriebsstrang der Auspresseinrichtung ist derart ausgelegt, dass sich die zumindest eine Kolbenstange in der Freigabestellung des Sperrelementes einfach manuell relativ zum Aufnahmeraum verschieben lässt.In the blocking position of the blocking element engages a portion thereof in one of the recesses of the ring gear and locks it, so that the rotation of the ring gear is blocked. In the release position of the corresponding portion of the locking element is outside the recesses of the ring gear and the ring gear can rotate freely. The drive train of the ejection device is designed such that the at least one piston rod in the release position of the locking element can be easily moved manually relative to the receiving space.

Der Entriegelungsschalter für das Sperrelement ist unabhängig von dem Betätigungsschalter betätigbar. Somit kann der Betätigungsschalter ein Potentiometer-Schalter sein, der anhand des getätigten Weges des Betätigungsschalters den Motor aktiviert. Diese Art von Betätigungsschalter ermöglicht das Ausbringen von benutzerangepasster Auspressmengen der im Gebinde befindlichen Masse. Ist das Sperrelement, wie bei einer Auspressvorrichtung gemäss der DE 34 28 202 A1 , direkt mit dem Betätigungsschalter gekoppelt, muss dieser für das Überführen des Sperrelementes von der Sperrstellung in die Freigabestellung vollständig betätigt werden.The unlocking switch for the blocking element can be actuated independently of the actuating switch. Thus, the operating switch may be a potentiometer switch which activates the motor based on the path taken by the operating switch. This type of operating switch allows the application of user-adjusted Auspressmengen the mass in the container. Is the blocking element, as in a squeezing according to the DE 34 28 202 A1 , Coupled directly with the operating switch, it must be fully actuated for the transfer of the blocking element from the blocking position to the release position.

Das Planetengetriebe ist vorteilhaft ein Übersetzungsgetriebe und ist weiter vorteilhaft mehrstufig ausgebildet. Die vorteilhaft mehreren Stufen des Planetengetriebes sind beispielsweise auf einer Getrieberotationsachse koaxial zueinander angeordnet, was eine einfache und kompakte Ausgestaltung des Antriebsstrangs ermöglicht.The planetary gear is advantageously a transmission gear and is further advantageously designed in multiple stages. The advantageous multiple stages of the planetary gear are arranged coaxially to each other, for example, on a Getrieberotationsachse, which allows a simple and compact design of the drive train.

Vorteilhaft sind der Entriegelungsschalter und das Sperrelement zwei separate Elemente, die zur Betätigung des Sperrelementes bedarfsweise in Wirkverbindung bringbar sind. Die zweiteilige Ausgestaltung ermöglicht die Herstellung derselben mit einfachen und somit wirtschaftlichen Formen sowie ein einfaches Auswechseln des entsprechenden Elementes, wenn dieses über eine gewisse Gebrauchsdauer abgenutzt ist. Alternativ bilden der Entriegelungsschalter und das Sperrelement ein gemeinsames Element.Advantageously, the unlocking switch and the blocking element are two separate elements which can be brought into operative connection for actuating the blocking element as needed. The two-part design allows the production of the same with simple and thus economic forms and a simple replacement of the corresponding element, if this is worn over a certain period of use. Alternatively, the unlocking switch and the blocking element form a common element.

Erfindungsgemäss verläuft die Schwenkachse des Sperrelementes quer zur Getrieberotationsachse des Planetengetriebes, womit das Sperrelement besonders platzsparend zum Einschwenken und Ausschwenken in die Ausnehmungen des Hohlrades angeordnet werden kann. Vorteilhaft verläuft die Schwenkachse senkrecht zu einer die Getrieberotationsachse beinhaltende Ebene.According to the invention, the pivot axis of the blocking element extends transversely to the gear rotational axis of the planetary gear, whereby the blocking element can be arranged in a particularly space-saving manner for pivoting and swiveling into the recesses of the ring gear. Advantageously, the pivot axis is perpendicular to a plane containing the gear rotation axis.

Bevorzugt weist die Auspressvorrichtung ein Gehäuse auf und der Betätigungsschalter zur Betätigung des Motors ist auf einer dem Aufnahmeraum zugewandten Gehäuseseite des Gehäuses der Auspressvorrichtung und der Entriegelungsschalter ist auf einer dem Aufnahmeraum abgewandten Gehäuseseite des Gehäuses vorgesehen. Die dem Aufnahmeraum zugewandte Gehäuseseite ist beispielsweise ein Abschnitt eines Handgriffs der Auspressvorrichtung, welcher sich vorteilhaft im Wesentlichen senkrecht in Bezug auf die Längserstreckung der zumindest einen Kolbenstange beziehungsweise auf die Auspressrichtung erstreckt. Bei einer derartigen Anordnung ist der Betätigungsschalter vorteilhaft von dem Indexfinger und/oder dem Mittelfinger betätigbar, wobei der Entriegelungsschalter vom Daumen der gleichen Hand betätigbar ist. Damit ist die Auspressvorrichtung besonders einfach bedienbar und handhabbar.The squeezing device preferably has a housing and the actuating switch for actuating the motor is provided on a housing side of the housing of the squeezing device facing the receiving space, and the unlocking switch is provided on a housing side of the housing facing away from the receiving space. The housing side facing the receiving space is, for example, a portion of a handle of the squeezing device, which advantageously extends substantially perpendicular with respect to the longitudinal extent of the at least one piston rod or to the squeezing direction. In such an arrangement, the actuating switch is advantageously operable by the index finger and / or the middle finger, wherein the unlocking switch is actuated by the thumb of the same hand. Thus, the squeezing is particularly easy to use and manageable.

Vorzugsweise ist das Sperrelement über ein Federelement federbeaufschlagt, womit das Sperrelement automatisch in die bevorzugte Stellung gezwungen wird. Vorteilhaft wird das Sperrelement derart federbeaufschlagt, dass dieses im unbetätigten Zustand des Betätigungsschalters in der Sperrstellung ist. Das Federelement ist vorteilhaft eine Schraubenfeder und besonders vorteilhaft eine Schraubendruckfeder. Das Sperrelement erstreckt sich ausgehend von der Schwenkachse vorteilhaft in zwei, im Wesentlichen einander gegenüberliegende Richtungen, wobei ein Teil des Sperrelements den in die Ausnehmungen des Hohlrades eindringbaren Eingriffabschnitt und der andere Teil einen Betätigungsabschnitt mit einer Angriffsfläche für das Federelement sowie weiter vorteilhaft mit einer Angriffsfläche für den Entriegelungsschalter ausbildet.Preferably, the blocking element is spring-loaded via a spring element, whereby the blocking element is automatically forced into the preferred position. Advantageously, the blocking element is spring-loaded in such a way that it is in the blocking position in the unactuated state of the actuating switch. The spring element is advantageously a helical spring and particularly advantageously a helical compression spring. The blocking element advantageously extends from the pivot axis in two, substantially opposite directions, wherein a part of the locking element penetratable into the recesses of the ring gear engagement portion and the other part an actuating portion with an engagement surface for the spring element and further advantageous with an attack surface for forms the unlocking switch.

Bevorzugt sind die Ausnehmungen am Umfang des Hohlrades Nuten mit parallel zueinander verlaufenden Seitenwänden, womit in der Sperrstellung des Sperrelementes infolge dieser Ausgestaltung eine Blockierung des Hohlrades in beide Rotationsrichtungen des Hohlrades gegeben ist.Preferably, the recesses on the circumference of the ring gear grooves with mutually parallel side walls, which is given in the blocking position of the locking element as a result of this embodiment, a blockage of the ring gear in both rotational directions of the ring gear.

Ergänzend dazu oder alternativ sind die Ausnehmungen am Umfang des Hohlrades Nuten, die jeweils in Bezug auf den Umfang des Hohlrades einen von einer Ausgangstiefe ausgehenden, in Richtung des Umfangs in der Tiefe abnehmenden Bodenabschnitt aufweisen, womit in der Sperrstellung des Sperrelementes eine Blockierung des Hohlrades in eine entsprechende Rotationsrichtung des Hohlrades gegeben und in die andere Rotationsrichtung ein automatisches Auskuppeln des Sperrelementes möglich ist. Vorteilhaft läuft der in der Tiefe abnehmende Bodenabschnitt zum Umfang des Hohlrades hin aus, womit die Nuten an einer Seite keine Seitenwand aufweisen. Bei einem derartig ausgebildeten Hohlrad ist dieses vorteilhaft derart angeordnet, dass die zumindest eine Kolbenstange, z. B. für einen Schnellvorschub bei einem Wechsel auf ein halbausgepresstes Gebinde oder für den Transport der Auspressvorrichtung, in eine Rotationsrichtung des Hohlrades ohne Betätigung des Sperrelementes manuell vorgeschoben werden kann.In addition or alternatively, the recesses on the circumference of the ring gear grooves which each have a starting from an initial depth, in the direction of the circumference in depth decreasing bottom portion with respect to the circumference of the ring gear, whereby in the blocking position of the locking element is a blockage of the ring gear in given a corresponding direction of rotation of the ring gear and in the other direction of rotation automatic disengagement of the locking element is possible. Advantageously, the bottom section, which decreases in depth, runs out towards the circumference of the ring gear, whereby the grooves do not have a side wall on one side. In such a trained ring gear this is advantageously arranged such that the at least one piston rod, z. B. for a fast feed when changing to a semi-pressed container or for the transport of the squeezing, can be manually advanced in a direction of rotation of the ring gear without actuation of the locking element.

Die Erfindung wird nachstehend anhand von Ausführungsbeispielen näher erläutert. Es zeigen:

Fig. 1
Eine Auspressvorrichtung in Seitenansicht;
Fig. 2
einen Teilschnitt durch die Auspresseinrichtung parallel zur Längserstreckung der Kolbenstange mit dem Sperrelement in der Sperrstellung;
Fig. 3
einen Teilschnitt durch die Auspresseinrichtung gem. Fig. 2 mit dem Sperrelement in der Freigabestellung;
Fig. 4
das Hohlrad der Auspresseinrichtung mit dem Sperrelement in der Sperrstellung in einer Perspektive, und
Fig. 5
ein zweites Ausführungsbeispiel eines Hohlrades mit einem Sperrelement in der Sperrstellung im Grundriss.
The invention will be explained in more detail below with reference to embodiments. Show it:
Fig. 1
A squeezing device in side view;
Fig. 2
a partial section through the ejection device parallel to the longitudinal extent of the piston rod with the locking element in the blocking position;
Fig. 3
a partial section through the squeezing device acc. Fig. 2 with the blocking element in the release position;
Fig. 4
the ring gear of the ejection device with the blocking element in the blocking position in a perspective, and
Fig. 5
A second embodiment of a ring gear with a blocking element in the blocking position in plan view.

Grundsätzlich sind in den Figuren gleiche Teile mit den gleichen Bezugszeichen versehen.Basically, the same parts are provided with the same reference numerals in the figures.

Die in den Figuren 1 bis 4 dargestellte Auspressvorrichtung 11 für Massen enthaltende Gebinde 33 weist einen Aufnahmeraum 12 für das Gebinde 33, eine gegenüber dem Aufnahmeraum 12 verschiebbare, gelochte Kolbenstange 13 und eine elektrisch betätigbare Auspresseinrichtung 16 auf. An einem dem Aufnahmeraum 12 zugewandten Ende der Kolbenstange 13 ist ein Druckkolben 14 zur Beaufschlagung des Gebindes 33 beziehungsweise der darin befindlichen Masse vorgesehen.The in the FIGS. 1 to 4 illustrated squeezing device 11 for mass-containing container 33 has a receiving space 12 for the container 33, a displaceable relative to the receiving space 12, perforated piston rod 13 and an electrically actuated squeezing device 16. At a receiving space 12 facing the end of the piston rod 13, a pressure piston 14 is provided for acting on the container 33 and the mass therein.

Die Auspresseinrichtung 16 ist in einem Gehäuse 17 angeordnet, von dem sich ein Handgriff 30 erstreckt, der eine dem Aufnahmeraum 12 zugewandte Gehäuseseite 18 aufweist. Am freien Ende des Handgriffs 30 ist ein Batteriepack 19 lösbar festgelegt.The squeezing device 16 is arranged in a housing 17, from which extends a handle 30 which has a housing side 18 facing the receiving space 12. At the free end of the handle 30, a battery pack 19 is releasably fixed.

Die Auspresseinrichtung 16 umfasst ein Zahnrad als Antriebsrad 21, dessen Zähne für den Vorschub der Kolbenstange 13 in deren Lochungen eingreifen. Weiter umfasst die Auspresseinrichtung 16 einen Motor 22 für den Antrieb des Antriebsrades 21 sowie ein zwischen dem Antriebsrad 21 und dem Motor 22 zwischengeschaltetes, mehrstufiges Planetengetriebe 23. Das Planetengetriebe 23 weist eine Getrieberotationsachse 24 und neben weiteren Getriebekomponenten, wie Sonnenräder und Planetenräder, ein Hohlrad 25 auf. Das Hohlrad 25 ist an seinem Umfang 29 mit mehreren, zueinander beabstandeten Ausnehmungen 26 versehen. Die Ausnehmungen 26 am Umfang 29 des Hohlrades 25 sind Nuten mit parallel zueinander verlaufenden Seitenwänden 27.The press-out device 16 comprises a toothed wheel as a drive wheel 21, whose teeth engage in the advancement of the piston rod 13 in their perforations. Furthermore, the ejection device 16 comprises a motor 22 for driving the drive wheel 21 and a multi-stage planetary gear 23 interposed between the drive wheel 21 and the motor 22. The planetary gear 23 has a gear rotation axis 24 and, in addition to other transmission components such as sun gears and planet gears, a ring gear 25 on. The ring gear 25 is provided at its periphery 29 with a plurality of mutually spaced recesses 26. The recesses 26 on the circumference 29 of the ring gear 25 are grooves with mutually parallel side walls 27th

Weiter ist ein Sperrelement 36 vorgesehen, das um eine Schwenkachse 37 von einer Sperrstellung (Fig. 2) zum Blockieren des Hohlrades 25 des Planetengetriebes 23 in eine Freigabestellung (Fig. 3) zur Freigabe dieses Hohlrades (25) schwenkbar ist. Die Schwenkachse 37 des Sperrelementes 36 verläuft quer zur Getrieberotationsachse 24 des Planetengetriebes 23. Zur Betätigung des Sperrelementes 36 ist ein separater Entriegelungsschalter 41 vorgesehen, der über ein Gelenk 42 schwenkbar an dem Gehäuse 17 festgelegt ist.Further, a blocking element 36 is provided which is pivotable about a pivot axis 37 from a blocking position (FIG. Fig. 2 ) for blocking the ring gear 25 of the planetary gear 23 in a release position ( Fig. 3 ) is pivotable to release this ring gear (25). The pivot axis 37 of the locking element 36 extends transversely to the gear rotation axis 24 of the planetary gear 23. For actuating the blocking element 36, a separate unlocking switch 41 is provided, which is fixed via a hinge 42 pivotally mounted on the housing 17.

An der dem Aufnahmeraum 12 zugewandten Gehäuseseite 18 des Gehäuses 17 ist ein Potentiometer-Schalter als Betätigungsschalter 31 zur Betätigung des Motors 22 vorgesehen. Der Entriegelungsschalter 41 ist auf der dem Aufnahmeraum 12 abgewandten Gehäuseseite 20 des Gehäuses 17 vorgesehen. In diesem Beispiel ist der Entriegelungsschalter 41, in Bezug auf die Auspressrichtung der Auspressvorrichtung 11, am rückseitigen Ende des Gehäuses 17 angeordnet.At the receiving space 12 facing the housing side 18 of the housing 17, a potentiometer switch is provided as an actuating switch 31 for actuating the motor 22. The unlocking switch 41 is provided on the receiving space 12 facing away from the housing side 20 of the housing 17. In this example, the unlocking switch 41 is located at the rear end of the housing 17 with respect to the squeezing direction of the squeezing device 11.

Das Sperrelement 36 erstreckt sich in Bezug auf die Schwenkachse in zwei einander gegenüberliegenden Richtungen, wobei der eine Abschnitt einen in die Ausnehmungen 26 des Hohlrades 25 eingreifenden Eingreifabschnitt 38 des Sperrelementes 36 und der andere Abschnitt den Betätigungsabschnitt 39 des Sperrelementes 36 bildet. Zwischen einem Gehäuseabschnitt 28 des Planetengetriebes 23 und dem Betätigungsabschnitt 39 des Sperrelementes 36 ist eine Schraubendruckfeder als Federelement 46 vorgesehen, welches das Sperrelement 36 federbeaufschlagt und dieses in dessen Sperrstellung als bevorzugte Stellung des Sperrelementes 36 zwingt.The locking member 36 extends with respect to the pivot axis in two opposite directions, wherein the one portion forms an engaging into the recesses 26 of the ring gear 25 engaging portion 38 of the locking element 36 and the other portion of the actuating portion 39 of the locking element 36. Between a housing portion 28 of the planetary gear 23 and the actuating portion 39 of the locking element 36, a helical compression spring 46 is provided as a spring element which urges the locking element 36 and this forces in its blocking position as the preferred position of the locking element 36.

Bei der Betätigung des Betätigungsschalters 31 wird der Motor 22 mit Strom aus dem Batteriepack 19 versorgt und über eine hier nicht dargestellte Steuerung aktiviert. Die Steuerung ist derart eingestellt, dass der Motor 22 nur für eine gewisse Zeit bestromt wird. Der Motor 22 versetzt die Komponenten des Planetengetriebes 23 in Rotation, wobei das Hohlrad 25 über das Sperrelement 36 arretiert ist. Dadurch wird das vom Motor 22 erzeugte Drehmoment auf das Antriebsrad 21 übertragen, welches seinerseits die Kolbenstange 13 um das entsprechende Mass in Richtung des Aufnahmeraums 12 vorschiebt. Dieser Vorgang wird so oft wiederholt, bis die gewünschte Menge der im Gebinde 33 befindlichen Masse ausgebracht ist.Upon actuation of the actuating switch 31, the motor 22 is supplied with power from the battery pack 19 and activated via a controller, not shown here. The control is set so that the motor 22 is energized only for a certain time. The motor 22 rotates the components of the planetary gear 23 in rotation, wherein the ring gear 25 is locked via the locking element 36. As a result, the torque generated by the motor 22 is transmitted to the drive wheel 21, which in turn advances the piston rod 13 by the appropriate amount in the direction of the receiving space 12. This process is repeated until the desired amount of mass contained in the container 33 is applied.

Um ein ausgepresstes oder teilausgepresstes Gebinde 33 zu ersetzen beziehungsweise zu wechseln, wird der Entriegelungsschalter 41 betätigt. Dabei wird das Sperrelement 36 entgegen der Federkraft des Federelementes 46 um die Schwenkachse 37 verschwenkt und in seine Freigabestellung überführt (Fig. 3), in welcher das Hohlrad 25 frei drehen kann. In der Freigabestellung des Sperrelementes 36 kann die Kolbenstange 13 trotz dem ständig mit der Kolbenstange 13 in Eingriff stehenden Antriebsrades 21 manuell zurückgezogen oder vorgeschoben werden, da dieses aufgrund des nunmehr frei rotierbaren Hohlrades 25 leer mitdreht. Nach der Entlastung des Entriegelungsschalters 41 wird das Sperrelement 36 von dem Federelement 46 wieder in seine Sperrstellung (Fig. 2) gezwungen. Das Gebinde 33 ist nun aus dem Aufnahmeraum 12 der Auspressvorrichtung 11 entnehmbar.In order to replace or change a pressed-out or partially pressed-out container 33, the unlocking switch 41 is actuated. In this case, the blocking element 36 is pivoted against the spring force of the spring element 46 about the pivot axis 37 and transferred into its release position ( Fig. 3 ), in which the ring gear 25 can rotate freely. In the release position of the locking element 36, the piston rod 13 can be manually withdrawn or advanced despite the constant with the piston rod 13 in engagement drive wheel 21, since this rotates empty due to the now freely rotatable ring gear 25. After the release of the unlocking switch 41, the blocking element 36 is returned by the spring element 46 into its blocking position (FIG. Fig. 2 ) forced. The container 33 is now removed from the receiving space 12 of the extrusion device 11.

Nach dem Einlegen des neuen Gebindes in den Aufnahmeraum 12 wird der Entriegelungsschalter 41 erneut betätigt und in der gedrückten Stellung gehalten, so dass die Kolbenstange 13 bis zur Anlage an dem Gebinde beziehungsweise an der auszupressenden Masse vorschiebbar ist. Nach der Entlastung des Entriegelungsschalters 41 kehrt das Sperrelement 36 wieder in seiner Sperrstellung zurück (Fig. 2) und arretiert das Hohlrad 25 erneut. Bei einer Betätigung des Betätigungsschalters 31 wird das Drehmoment des Motors 22 über das Planetengetriebe 23 wieder auf das Antriebsrad 21 übertragen und die im neuen Gebinde befindliche Masse kann ausgepresst werden.After inserting the new container in the receiving space 12 of the unlocking switch 41 is actuated again and held in the depressed position, so that the piston rod 13 is pushed forward until it rests against the container or to the mass to be squeezed out. After the release of the unlocking switch 41, the blocking element 36 returns to its blocking position ( Fig. 2 ) and locks the ring gear 25 again. Upon actuation of the actuating switch 31, the torque of the motor 22 is transmitted via the planetary gear 23 back to the drive wheel 21 and the mass contained in the new container can be squeezed out.

Alternativ dazu wird der Betätigungsschalter 31 direkt nach dem Einlegen des neuen Gebindes in den Aufnahmeraum 12 betätigt, so dass die Kolbenstange 13 bis zur Anlage an dem Gebinde beziehungsweise an der auszupressenden Masse von dem Motor 22 vorgeschoben wird.Alternatively, the operating switch 31 is actuated directly after inserting the new container into the receiving space 12, so that the piston rod 13 is advanced by the motor 22 until it rests on the container or on the mass to be squeezed out.

Das in Figur 5 gezeigte Hohlrad 55 ist an seinem Umfang 59 ebenfalls mit mehreren, zueinander beabstandeten Ausnehmungen 56 versehen, die als Nuten ausgebildet sind. Diese Ausnehmungen 56 weisen jeweils in Bezug auf den Umfang 59 des Hohlrades 55 einen von einer Ausgangstiefe T ausgehenden, in Richtung des Umfangs 59 in der Tiefe U abnehmenden Bodenabschnitt 60 auf. Der Bodenabschnitt 60 der Ausnehmungen 56 verläuft jeweils rampenförmig. Die Ausnehmungen 56 weisen somit jeweils zwei unterschiedlich lange Seitenwände 57 bzw. 61 auf, wobei die Seitenwand 61 kleiner als die Seitenwand 57 ist. In einer alternativen, hier nicht dargestellten Ausführung läuft der in der Tiefe abnehmende Bodenabschnitt zum Umfang 59 des Hohlrades 55 hin aus, so dass die als Nuten ausgebildeten Ausnehmungen jeweils nur die Seitenwand 57 aufweisen.This in FIG. 5 shown ring gear 55 is also provided at its periphery 59 with a plurality of mutually spaced recesses 56 which are formed as grooves. These recesses 56 each have, with respect to the circumference 59 of the ring gear 55, a bottom portion 60 extending from an initial depth T and decreasing in the direction of the circumference 59 in the depth U. The bottom portion 60 of the recesses 56 extends in each case ramp-shaped. The recesses 56 thus each have two different-length side walls 57 and 61, wherein the side wall 61 is smaller than the side wall 57. In an alternative embodiment, not shown here, the bottom section, which decreases in depth, runs out toward the circumference 59 of the ring gear 55, so that the recesses formed as grooves each have only the side wall 57.

In der gezeigten Sperrstellung liegt der Eingreifabschnitt 68 des um die Schwenkachse 67 schwenkbaren Sperrelementes 66 zur Arretierung des Hohlrades 55 an der Seitenwand 57 der Ausnehmung 56 an.In the blocking position shown, the engagement portion 68 of the pivotable about the pivot axis 67 locking element 66 is for locking the ring gear 55 on the side wall 57 of the recess 56 at.

Claims (5)

  1. Pressing out device for containers (33) containing masses with a receiving area (12) for the container (33),
    with at least one piston rod (13) that may move in relation to the receiving area (12), with a pressing out device (16), which comprises a drive wheel (21) for pushing forward the at least one piston rod (13), a motor (22) for the drive of the drive wheel (21) and a planetary gear (23) with a gear rotation axis (24) and with at least one ring gear (25; 55) interposed between the drive wheel (21) and the motor (22), in which the at least one ring gear (25; 55) is provided with several recesses (26; 56) at a distance from each other on its circumference (29; 59),
    with an actuator switch (31) for actuating the motor (22), and
    with a locking element (36; 66), which may be moved from a locking postion for locking the at least one ring gear (25; 55) of the planetary gear (23) into a releasing position for releasing this ring gear (25; 55), in which
    a separate unlocking switch (41) for actuating the locking element (36; 66) is provided and the locking element (36; 66) may be swivelled around a swivel axis (37; 67) for moving it from the locking position into the releasing position,
    characterised in that the swivel axis (37; 67) of the locking element runs crosswise to the gear rotation axis (24) of the planetary gear (23).
  2. Pressing out device according to claim 1, characterised in that the pressing out device (11) has a housing (17) and the actuator switch (31) for actuating the motor (22) is provided on a side (18) of the housing (17) facing towards the receiving area (12) and the unlocking switch (41) is provided on a side (20) of the housing (17) facing away from the receiving area (12).
  3. Pressing out device according to one of claims 1 or 2, characterised in that the locking element (36) is spring-loaded by a spring element (46).
  4. Pressing out device according to one of claims 1 to 3, characterised in that the recesses (26) on the circumference (29) of the ring gear (25) are grooves with side walls (27) running parallel to each other.
  5. Pressing out device according to one of claims 1 to 4, characterised in that the recesses (56) on the circumference (59) of the ring gear (25) are grooves, which with reference to the circumference (59) of the ring gear (55) have a floor section (60) decreasing in depth (U) in the direction of the circumference (59), starting from an initial depth (T).
EP10174106.4A 2009-09-18 2010-08-26 Extrusion device Active EP2298453B1 (en)

Applications Claiming Priority (1)

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DE102009041825A DE102009041825A1 (en) 2009-09-18 2009-09-18 squeezing

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CA (1) CA2714943C (en)
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MX2010010097A (en) 2011-05-04
US8448825B2 (en) 2013-05-28
EP2298453A2 (en) 2011-03-23
CA2714943A1 (en) 2011-03-18
CN102019260A (en) 2011-04-20
EP2298453A3 (en) 2017-11-29
CN102019260B (en) 2015-07-01
US20110068130A1 (en) 2011-03-24
CA2714943C (en) 2017-06-06
DE102009041825A1 (en) 2011-03-24

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