EP2641836A1 - Label applicator - Google Patents

Label applicator Download PDF

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Publication number
EP2641836A1
EP2641836A1 EP13159194.3A EP13159194A EP2641836A1 EP 2641836 A1 EP2641836 A1 EP 2641836A1 EP 13159194 A EP13159194 A EP 13159194A EP 2641836 A1 EP2641836 A1 EP 2641836A1
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EP
European Patent Office
Prior art keywords
spring element
snap spring
applicator
manipulator arm
applicator according
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Granted
Application number
EP13159194.3A
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German (de)
French (fr)
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EP2641836B1 (en
Inventor
Horst Jung
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Bizerba SE and Co KG
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Bizerba SE and Co KG
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Publication of EP2641836A1 publication Critical patent/EP2641836A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/26—Devices for applying labels
    • B65C9/36—Wipers; Pressers

Definitions

  • the present invention relates to an applicator for applying labels to goods, with an extendable, provided on the extendable end with an applicator manipulator arm.
  • Labels are used for product labeling and may include, for example, printed product information such as contents, price and manufacturer information or promotional information and the like.
  • Applicators are used to attach the labels to a package of a particular product or to the product itself.
  • the manipulator is adjustable between a transfer position for taking over the respective label from a feeder and an application position for applying the respective label to the respective product.
  • Applicators bring the respective label so for example from a printer who prints the label, or from any other feeder, transport the respective label to the respective product, such as an optionally packaged retail item, and thus label the goods.
  • An applicator which has an applicator head in the form of a resilient cup.
  • the resilient cup can spring-loaded against the extension direction of the manipulator arm when applying a label when placing on a commodity dodge to ensure the smoothest possible touchdown.
  • the spring-loaded retraction can be detected when placing the Applizierkopfs on the goods be so that then the Applizierkopf can be withdrawn from the goods.
  • the spring force of a spring increases, as in the document DE 10 2008 032 019 A1 is disclosed, linear with the spring travel. Since the applicator head retracts from the goods only after a time delay when the application head, which is still in the extension movement at that time, detects the application head may still be in spite of the provision of a receding spring presses with a relatively large force on the respective commodity. This is to be avoided in particular for a product with a foil packaging.
  • the present invention has for its object to provide an applicator of the type mentioned above, which allows reliable application, especially in cases where the Applizierkopf is placed at high speed on the respective product.
  • hook's spring instead of the known from the prior art Hook's spring according to the invention therefore a snap spring element is used.
  • the spring characteristic of such a spring element initially increases monotonically up to a maximum value and then has an adjoining region with a negative spring characteristic curve in which the spring force decreases with increasing spring travel. If the snap spring element is subjected to a force which exceeds the aforementioned maximum value, the abovementioned area is abruptly traversed by the snap spring element.
  • Such snapping snap spring elements are, in the event that also still takes place an automatic snap back, known as a snap-fly spring elements.
  • the snapping of the respective snap spring element can be used to detect the impact of Applizierkopfs on a product, whereupon the extendable end of the manipulator arm and thus the Applizierkopf against the extension direction of the balance can be withdrawn.
  • the braking distance until the reversal of the drive of the extendable end of the manipulator arm, during which the applicator further in the extension direction, i. is moved to the goods, however, is compensated by the above-mentioned negative range of the spring characteristic curve, in particular overcompensated, so that despite the further approach of the Applizierkopfs associated with the braking distance to the goods, the force acting on the product spring force at least does not increase further.
  • the respective snap spring element is thus designed such that it snaps into a snapped-over position or snap-in position when acted upon by a force exceeding a predetermined value and acting counter to the extension direction from a stable basic position, in particular temporarily or temporarily.
  • the snap spring element or elements need not necessarily snap over during operation of the applicator.
  • the operating parameters of the applicator can in principle also be set such that no snapping takes place in normal operation without special occurrences, but snapping over merely represents a safety function, ie. Only in exceptional cases, a snap takes place, in particular when the Applizierkopf unexpectedly on an obstacle located in front of the respective product, for example, a hand of an operator meets.
  • the snapped position may be a stable position or an unstable position.
  • the respective snap spring element can therefore be designed as a bistable snap spring element or as a monostable snap spring element.
  • a bistable snap-spring element is designed such that it only snaps back from its snapped-over position to the starting position when it is acted upon by a force which acts in the extension direction and exceeds a predetermined value.
  • a monostable snap spring element is designed so that it, when a restoring force of the snap spring element in the umgeschnappten position is greater than acting counter to the extension direction acting force, automatically snaps back from the umgeschnappten position in the basic position.
  • the applicator is designed such that the snap-back of the respective snap spring element takes place from a stable, snapped position into a stable basic position by retracting the applicator head against a stop provided on the manipulating arm.
  • the snap back of the respective Snap spring element or the resetting of the respective snap spring element can be achieved in the basic position in a simple manner.
  • the respective snap spring element is formed as a curved in a stable basic position in the extension of the manipulator arm, in particular arcuately stretched, leaf spring.
  • a snap function is particularly well realized.
  • such springs are simple and inexpensive to produce.
  • the respective leaf spring is elongated or strip-shaped.
  • the respective snap spring element can be mounted with its two ends on the manipulator arm. In principle, however, it is also possible that the one or more snap spring elements are mounted with the respective two ends on the Applizierkopf.
  • the manipulator arm at its extendable end a support platform, in particular with a receiving space, for the at least one snap spring element.
  • the carrier platform may comprise a bottom section and two side sections projecting from the bottom section in the extension direction and projecting, in particular extensions, between which the respective snap spring element is mounted.
  • the at least one snap spring element in particular in the umgeschnappten position, are added. Through the receiving space ensures that there is enough space for the snap-back and snap of the snap spring elements or is available.
  • the respective snap spring element can then engage with its two ends in corresponding recesses or recesses of the two side sections loosely and / or captively.
  • the respective snap spring element can therefore be held without friction or frictional connection and without further connecting elements.
  • the recesses are formed in particular on the inner sides of the two side sections.
  • the respective side section can be divided at the level of the at least one recess along a dividing line into two parts which are detachably fixedly connected to one another. This allows the snap spring element (s) to be inserted into the recesses without excessive deformation, and only after that the two respective parts are connected together.
  • the respective snap spring element may be mounted floating at its two ends in the extension direction.
  • a floating bearing can be achieved for example by the aforementioned loose engagement of the two ends of the respective Schappfederelements in the corresponding recesses of the two side sections.
  • the two ends of the respective snap spring element are preferably fixed.
  • the life of the respective snap spring element can be increased by the floating bearing. Under a floating bearing is also the case to understand that the two ends of the respective snap spring element in the respective position, ie in the starting position and in the umgeschnappten position, immovable, but due to the snap or snap back but a movement takes place.
  • a particular floating bearing of the respective snap spring element may at both ends of the respective snap spring element, in particular within the aforementioned recesses, extending in the extension direction guide elements, in particular pins, which act on both sides in particular as a lateral stop for the two ends of the respective snap spring element and / or against which the respective snap spring element is supported in the lateral direction.
  • the respective snap spring element is then arranged between, with respect to the respective snap spring element, opposing guide elements, in particular clamped.
  • the respective snap spring element is held between two crossheads or cross connectors firmly connected to the applicator head.
  • the two traverses are arranged parallel to one another and / or on the side of the applicator head opposite to an applicator plate and spaced therefrom.
  • two in particular identical snap spring elements are provided, which are arranged in particular parallel to each other. This is particularly advantageous if the snap spring elements are designed as leaf springs.
  • the respective snap spring element can be reversibly exchangeable.
  • the applicator can be adapted to the respective product to be labeled.
  • snap spring elements having small spring stiffnesses, flat spring characteristics, and / or comparatively small maximum spring force values at which the snap spring elements snap over may be employed.
  • snap spring elements with greater spring hardness or spring stiffness, steeper spring characteristics and / or comparatively large maximum values can be used.
  • a positive guidance is provided, which is designed to prevent tilting of the applicator head relative to the extension direction in a stable basic position and / or during an extension and / or retraction of the applicator head. This allows a high positioning accuracy of the labels can be achieved on the goods. In particular, tilting of the applicator head can also be prevented if the applicator head encounters a product, i. the goods oppose the Applizierkopf a resistance.
  • the positive guide may comprise at least one rod which engages in a respective counter-shaped opening or rod receptacle.
  • a Umschnapperkennungs is provided to detect a snapping the snap spring element, in particular from a stable basic position.
  • the applicator is designed, upon detection of a snap-on, the extendable end of the manipulator arm and thus the Applizierkopf against the extension direction withdraw.
  • the Umschnapperkennungs may be, for example, a Hall sensor or a switch.
  • the extendable end of the applicator can be moved, for example, by means of a spindle drive or a pneumatic cylinder.
  • means may be provided to rotate the applicator head about the longitudinal axis of the manipulator arm.
  • This end of the manipulator arm 13 is axially, ie along the longitudinal extension of the manipulator arm 13, and telescopically extended and retracted.
  • the extension direction 17 of the manipulator arm 13 thus corresponds to the direction of the longitudinal extension of the manipulator arm 13.
  • the manipulator arm 13 is formed as a spindle drive comprising an unrecognizable threaded rod, at the free end of the Applizierkopf 15 is attached and which is drivable by a motor 23 via a belt transmission, in particular a toothed belt transmission, of which only the two pulleys 19 and 21 are shown.
  • a belt transmission in particular a toothed belt transmission, of which only the two pulleys 19 and 21 are shown.
  • the applicator head 15 is shown in a slightly extended position, especially before a label is applied to a product.
  • the manipulator arm 13 may be approximately twice the length.
  • the Applizierkopf 15 comprises a perforated plate 59 and a fan 61, which allows a respective label is sucked and held on the perforated plate 59.
  • the manipulator arm 13 is then extended in the direction of the goods, wherein the respective label adheres to the goods in contact with the goods due to an attached to the underside of the label adhesive layer.
  • the perforated plate 59 is supported on in particular four frame bars 63 on a bottom plate 65 of the Applizierkopfs 15.
  • the fan 61 is disposed within the frame formed by the bottom plate 65, the frame bars 63 and the perforated plate 59.
  • the applicator head 15 is fastened to the extendable end of the manipulator arm 13 via two bistable snap leaf springs 25, 27.
  • the two leaf springs 25, 27 are bent in their stable basic position in the extension direction of the manipulator arm 13.
  • the two identical, mutually parallel leaf springs 25, 27 are supported with their respective two ends by a support platform 29 which is attached to the extendable end of the manipulator arm 13.
  • a support platform 29 which is attached to the extendable end of the manipulator arm 13.
  • the two leaf springs 25, 27 between two fixedly connected to the Applizierkopf 15 trusses 31, 33 are held.
  • the two trusses 31, 33 are firmly connected to the bottom plate 65 of the Applizierkopfs 15.
  • the Applizierkopf 15 pressed during extension of the manipulator arm 13 against a product to apply a label there grab the two leaf springs when exceeding a certain contact pressure from their respective stable basic position, as in Fig. 1 is shown in a umgeschnappte position, as in Fig. 3 is shown.
  • the spring characteristic of the two leaf springs 25, 27 is due to their design as snap springs in such a way that when snapping the spring force and thus the pressure applied to the respective product pressure against the contact pressure, which acts on the product immediately before snapping, is reduced. As a result, a gentle placement of the applicator is possible on the product. Damage to the product or packaging of the product can be avoided.
  • a Hall sensor 67 is provided, with which the Umschnapproach the two leaf springs 25, 27 can be detected.
  • the Applizierkopf 15 with a non-illustrated, laterally attached to the two trusses 31, 33 provided magnet which abruptly approaches the Hall sensor 67 when snapping the two leaf springs 25, 27. Once such a snap is detected, the applicator head 15 is withdrawn from the respective product.
  • the time delay from detecting the snap up to reversing the drive i. the time in which the Applizierkopf 15 is further extended by the manipulator arm 13 in the direction of the respective product, this poses no problem, since the distance covered in this time by the extendable end of the manipulator arm 13 by a by snapping the two leaf springs 25th 27 causes retraction of the applicator head 15 from the product at a correspondingly selected extension speed and processing speed of the snap-detection signal can be compensated or overcompensated.
  • the Fig. 3 shows the stable umgeschnappte position of the two leaf springs 25, 27 after the Applizierkopf 15 has hit a product or packaging.
  • the leaf springs 25, 27 are snapped and remain in the umgeschnappten position until the Applizierkopf 15 is moved back from its extended position almost completely back to its retracted position, as in Fig. 3 is shown.
  • Fig. 2 it can be seen, immersed when moving back the Applizierkopfs 15 attached to the manipulator arm 13 pin 73, in particular metal pin, through the bottom portion 43 of the support platform 29 and presses on the traverse 31 and thus the two leaf springs 25, 27 back to the stable basic position, ie there is a snap back.
  • the pin 73 is not rigid with the manipulator arm 13 connected, but stored there spring-damped. As a result, a hard impact of Applizierkopfs 15 is prevented on the pin 73.
  • leaf springs are used, which - as soon as the Applizierkopf is reversed by the respective product, ie as soon as the Applizierkopf no force is opposed by the respective product - from the in Fig. 3 shown position due to their restoring force automatically back to the in Fig. 1 snapping back to the position shown.
  • spiral springs are arranged around the frame bars 63, and the frame bars 63 can dip into the bottom plate 65. In this way, an additional damping of the perforated plate 59 can be achieved when placed on a product.
  • the Applizierkopf 15 has on two opposite sides in each case a directed in the extension direction 17 guide rod 35, 37, which engages in a respective, attached to a respective side of the support platform 29 ring-shaped eyelet 39, 41.
  • a guide of the Applizierkopfs 15 is achieved relative to the support platform.
  • a tilting of the Applizierkopfs 15 relative to the extension direction 17 of the Manipulierarms 13 during extension and retraction of the Applizierkopfs 15 and in particular also when placing the Applizierkopfs 15 to the respective product can be reliably avoided.
  • the support platform 29 comprises a bottom portion 43 which on two opposite sides in each case one in the extension direction 17 facing wall portion 45, 47, wherein the two leaf springs 25, 27 are mounted and clamped between these two wall sections 45, 47.
  • the two leaf springs 25, 27 engage with their respective two ends in respective recesses 49 of the two wall sections 45, 47.
  • the two leaf springs 25, 27 are each flat or not bent.
  • the length of the leaf springs 25, 27 is slightly larger than the available clamping length between the two respective recesses 49, and when inserting the leaf springs 25, 27 stretched.
  • the space formed between the two wall sections 45, 47 can be referred to as a receiving space for the two leaf springs 25, 27.
  • the respective end of the respective leaf spring 25, 27 stands on two, arranged in the respective associated recess 49, in the extension direction 17 directed pins 51, 53 (which, however, are shown only to the leaf spring 27) and is supported against it.
  • the two leaf springs 25, 27 and the support platform 29 are thus not firmly connected to each other, but the two leaf springs 25, 27 only engage loosely in the support platform 29 a.
  • the recesses 49 are higher than the thickness of the leaf springs 25, 27.
  • the leaf springs 25, 27 are guided only on the pins 51, 53 and can snap freely within the recesses 49.
  • the leaf springs 25, 27 are immovable.
  • the two edge portions 45, 47 are each formed in such a two-part that the in Fig. 4 in the extension 17 still open recesses 49 each by a corresponding cover 55 and 57th are covered, wherein in the Fig. 4 and 5 corresponding division lines 69, 71 can be seen.
  • the in Fig. 4 and 5 corresponding division lines 69, 71 can be seen.
  • other, in particular not two-part training are possible.

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  • Toys (AREA)
  • Labeling Devices (AREA)

Abstract

The applicator (11) has an applicator head (15) supported at an extensible end of an extensible manipulator arm (13) i.e. spindle drive, over bistable snatching plate springs (25, 27). The applicator is formed such that the plate springs are back snatched from a stable re-snapped position to a stable base position via retraction of the applicator head against a stopper at the manipulator arm. Two ends of the plate springs are supported at the manipulator arm. The extensible end of the manipulator arm comprises a support platform (29) that comprises a bottom section and side sections.

Description

Die vorliegende Erfindung betrifft einen Applikator zum Aufbringen von Etiketten auf Waren, mit einem ausfahrbaren, an dem ausfahrbaren Ende mit einem Applizierkopf versehenen Manipulatorarm.The present invention relates to an applicator for applying labels to goods, with an extendable, provided on the extendable end with an applicator manipulator arm.

Etiketten werden zur Warenkennzeichnung verwendet und können beispielsweise aufgedruckte Produktinformationen wie Angaben über den Inhalt, den Preis und den Hersteller oder Werbeinformationen und dergleichen beinhalten. Um die Etiketten auf einer Verpackung eines jeweiligen Produkts oder dem Produkt selbst anzubringen, werden Applikatoren eingesetzt. Hierzu ist der Manipulatorarm zwischen einer Übernahmeposition zur Übernahme des jeweiligen Etiketts von einer Zuführeinrichtung und einer Aufbringposition zum Aufbringen des jeweiligen Etiketts auf die jeweilige Ware verstellbar. Applikatoren holen das jeweilige Etikett also beispielsweise von einem Drucker, der das jeweilige Etikett bedruckt, oder von einer sonstigen Zuführeinrichtung ab, transportieren das jeweilige Etikett zu der jeweiligen Ware, beispielsweise einem gegebenenfalls verpackten Einzelhandelsartikel, und etikettieren damit die Ware.Labels are used for product labeling and may include, for example, printed product information such as contents, price and manufacturer information or promotional information and the like. Applicators are used to attach the labels to a package of a particular product or to the product itself. For this purpose, the manipulator is adjustable between a transfer position for taking over the respective label from a feeder and an application position for applying the respective label to the respective product. Applicators bring the respective label so for example from a printer who prints the label, or from any other feeder, transport the respective label to the respective product, such as an optionally packaged retail item, and thus label the goods.

Aus dem Dokument DE 10 2008 032 019 A1 ist ein Applikator bekannt, der einen Applizierkopf in Form eines federnden Bechers aufweist. Der federnde Becher kann beim Aufbringen eines Etiketts beim Aufsetzen auf einer Ware federbelastet entgegen der Ausfahrrichtung des Manipulatorarms ausweichen, um ein möglichst sanftes Aufsetzen zu gewährleisten. Mittels eines Beschleunigungssensors kann das federbelastete Zurückweichen beim Aufsetzen des Applizierkopfs auf der Ware detektiert werden, so dass anschließend der Applizierkopf von der Ware zurückgezogen werden kann.From the document DE 10 2008 032 019 A1 An applicator is known which has an applicator head in the form of a resilient cup. The resilient cup can spring-loaded against the extension direction of the manipulator arm when applying a label when placing on a commodity dodge to ensure the smoothest possible touchdown. By means of an acceleration sensor, the spring-loaded retraction can be detected when placing the Applizierkopfs on the goods be so that then the Applizierkopf can be withdrawn from the goods.

Nach dem Hook'schen Gesetz steigt die Federkraft einer Feder, wie sie in dem Dokument DE 10 2008 032 019 A1 offenbart ist, linear mit dem Federweg an. Da bei einem Erkennen eines Aufsetzens des sich zu diesem Zeitpunkt noch in der Ausfahrbewegung befindenden Applizierkopfs auf einer Ware das Zurückziehen des Applizierkopfs von der Ware erst mit Zeitverzögerung stattfindet, kann es unter Umständen vorkommen, dass der Applizierkopf trotz des Vorsehens einer zurückweichenden Feder nach wie vor mit einer relativ großen Kraft auf die jeweilige Ware drückt. Dies ist insbesondere bei einer Ware mit einer Folienverpackung zu vermeiden.According to Hooke's law, the spring force of a spring increases, as in the document DE 10 2008 032 019 A1 is disclosed, linear with the spring travel. Since the applicator head retracts from the goods only after a time delay when the application head, which is still in the extension movement at that time, detects the application head may still be in spite of the provision of a receding spring presses with a relatively large force on the respective commodity. This is to be avoided in particular for a product with a foil packaging.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Applikator der eingangs genannten Art anzugeben, der ein zuverlässiges Applizieren, insbesondere auch in den Fällen, in denen der Applizierkopf mit hoher Geschwindigkeit auf die jeweilige Ware aufgesetzt wird, ermöglicht.The present invention has for its object to provide an applicator of the type mentioned above, which allows reliable application, especially in cases where the Applizierkopf is placed at high speed on the respective product.

Diese Aufgabe wird durch einen Applikator mit den Merkmalen des Anspruchs 1 gelöst, und insbesondere dadurch, dass der Applizierkopf über wenigstens ein Schnappfederelement an dem Manipulatorarm gehaltert ist.This object is achieved by an applicator having the features of claim 1, and in particular by the fact that the Applizierkopf is supported on at least one snap spring element on the manipulator.

Anstelle der aus dem Stand der Technik bekannten Hook'schen Feder wird erfindungsgemäß also ein Schnappfederelement eingesetzt. Die Federkennlinie eines derartigen Federelements steigt zunächst monoton bis zu einem Maximalwert an und weist dann aber einen daran anschließenden Bereich mit negativem Federkennlinienverlauf auf, in dem die Federkraft mit steigendem Federweg abfällt. Wird das Schnappfederelement mit einer Kraft beaufschlagt, die den vorgenannten Maximalwert überschreitet, wird der vorgenannte Bereich von dem Schnappfederelement schlagartig durchlaufen. Derartige umschnappende Schnappfederelemente sind, für den Fall, dass auch noch ein automatisches Rückschnappen erfolgt, auch als Knackfrosch-Federelemente bekannt.Instead of the known from the prior art Hook's spring according to the invention therefore a snap spring element is used. The spring characteristic of such a spring element initially increases monotonically up to a maximum value and then has an adjoining region with a negative spring characteristic curve in which the spring force decreases with increasing spring travel. If the snap spring element is subjected to a force which exceeds the aforementioned maximum value, the abovementioned area is abruptly traversed by the snap spring element. Such snapping snap spring elements are, in the event that also still takes place an automatic snap back, known as a snap-fly spring elements.

Das Umschnappen des jeweiligen Schnappfederelements kann zur Erkennung des Auftreffens des Applizierkopfs auf einer Ware verwendet werden, woraufhin das ausfahrbare Ende des Manipulatorarms und damit der Applizierkopf entgegen der Ausfahrrichtung von der Waage zurückgezogen werden kann. Der Bremsweg bis zur Reversierung des Antriebs des ausfahrbaren Endes des Manipulatorarms, während dem der Applizierkopf weiter in Ausfahrrichtung, d.h. auf die Ware hin, bewegt wird, wird durch den vorgenannten negativen Bereich der Federkennlinie jedoch kompensiert, insbesondere überkompensiert, so dass trotz der mit dem Bremsweg verbundenen weiteren Annäherung des Applizierkopfs an die Ware die auf die Ware wirkende Federkraft zumindest nicht weiter ansteigt.The snapping of the respective snap spring element can be used to detect the impact of Applizierkopfs on a product, whereupon the extendable end of the manipulator arm and thus the Applizierkopf against the extension direction of the balance can be withdrawn. The braking distance until the reversal of the drive of the extendable end of the manipulator arm, during which the applicator further in the extension direction, i. is moved to the goods, however, is compensated by the above-mentioned negative range of the spring characteristic curve, in particular overcompensated, so that despite the further approach of the Applizierkopfs associated with the braking distance to the goods, the force acting on the product spring force at least does not increase further.

Hierdurch wird gegenüber den aus dem Stand der Technik bekannten Federn ein sanfteres Aufsetzen des Applizierkopfs auf das jeweilige Produkt erreicht. Eine mögliche Beschädigung des Produkts bzw. dessen Verpackung kann daher noch besser als aus dem Stand der Technik bekannt vermieden werden. Dies gilt insbesondere bei Applikatoren, bei denen der Applizierkopf mit vergleichsweise hoher Geschwindigkeit auf die jeweilige Ware aufgesetzt wird.As a result, a gentler touchdown of the Applizierkopfs is achieved on the respective product over the springs known from the prior art. Possible damage to the product or its packaging can therefore be avoided even better than known from the prior art. This applies in particular to applicators in which the applicator head is placed on the respective product at a comparatively high speed.

Insbesondere ist das jeweilige Schnappfederelement also derart ausgelegt, dass es bei Beaufschlagung mit einer einen vorbestimmten Wert überschreitenden, entgegen der Ausfahrrichtung wirkenden Kraft aus einer stabilen Grundstellung, insbesondere temporär bzw. vorübergehend, in eine umgeschnappte Stellung bzw. Umschnappstellung umschnappt. Bevorzugt ist das Schnappfederelement zumindest teilweise aus Stahlblech gefertigt.In particular, the respective snap spring element is thus designed such that it snaps into a snapped-over position or snap-in position when acted upon by a force exceeding a predetermined value and acting counter to the extension direction from a stable basic position, in particular temporarily or temporarily. Prefers the snap spring element is at least partially made of sheet steel.

Das oder die Schnappfederelemente müssen im Betrieb des Applikators jedoch nicht zwangsläufig umschnappen. Die Betriebsparameter des Applikators können grundsätzlich auch derart eingestellt werden, dass im Normalbetrieb ohne besondere Vorkommnisse kein Umschnappen stattfindet, sondern das Umschnappen lediglich eine Sicherheitsfunktion darstellt, d.h. nur in Ausnahmefällen ein Umschnappen erfolgt, insbesondere wenn der Applizierkopf unerwartet auf ein vor dem jeweiligen Produkt befindliches Hindernis, beispielsweise eine Hand eine Bedieners, trifft.However, the snap spring element or elements need not necessarily snap over during operation of the applicator. The operating parameters of the applicator can in principle also be set such that no snapping takes place in normal operation without special occurrences, but snapping over merely represents a safety function, ie. Only in exceptional cases, a snap takes place, in particular when the Applizierkopf unexpectedly on an obstacle located in front of the respective product, for example, a hand of an operator meets.

Bei der umgeschnappten Stellung kann es sich um eine stabile Stellung oder um eine instabile Stellung handeln. Das jeweilige Schnappfederelement kann also als ein bistabiles Schnappfederelement oder als ein monostabiles Schnappfederelement ausgebildet sein. Ein bistabiles Schnappfederelement ist derart ausgelegt, dass es lediglich bei Beaufschlagung mit einer einen vorbestimmten Wert überschreitenden, in Ausfahrrichtung wirkenden Kraft aus seiner umgeschnappten Stellung in die Ausgangsstellung rückschnappt. Ein monostabiles Schnappfederelement hingegen ist derart ausgelegt, dass es, wenn eine Rückstellkraft des Schnappfederelements in der umgeschnappten Stellung größer als die entgegen der Ausfahrrichtung wirkende beaufschlagende Kraft ist, aus der umgeschnappten Stellung automatisch in die Grundstellung rückschnappt.The snapped position may be a stable position or an unstable position. The respective snap spring element can therefore be designed as a bistable snap spring element or as a monostable snap spring element. A bistable snap-spring element is designed such that it only snaps back from its snapped-over position to the starting position when it is acted upon by a force which acts in the extension direction and exceeds a predetermined value. A monostable snap spring element, however, is designed so that it, when a restoring force of the snap spring element in the umgeschnappten position is greater than acting counter to the extension direction acting force, automatically snaps back from the umgeschnappten position in the basic position.

Nach einer Ausbildung der Erfindung ist der Applikator derart ausgelegt, dass das Rückschnappen des jeweiligen Schnappfederelements aus einer stabilen umgeschnappten Stellung in eine stabile Grundstellung durch Einfahren des Applizierkopfs gegen einen am Manipulierarm vorgesehenen Anschlag erfolgt. Hierdurch kann das Rückschnappen des jeweiligen Schnappfederelements bzw. das Zurückstellen des jeweiligen Schnappfederelements in die Grundstellung auf einfache Weise erreicht werden.According to one embodiment of the invention, the applicator is designed such that the snap-back of the respective snap spring element takes place from a stable, snapped position into a stable basic position by retracting the applicator head against a stop provided on the manipulating arm. As a result, the snap back of the respective Snap spring element or the resetting of the respective snap spring element can be achieved in the basic position in a simple manner.

Bevorzugt ist das jeweilige Schnappfederelement als eine in einer stabilen Grundstellung in Ausfahrrichtung des Manipulatorarms gebogene, insbesondere bogenförmig gespannte, Blattfeder ausgebildet. Mit derartigen Federn ist eine Schnappfunktion besonderes gut realisierbar. Darüber hinaus sind derartige Federn einfach und kostengünstig herstellbar. Insbesondere ist die jeweilige Blattfeder länglich bzw. streifenförmig ausgebildet.Preferably, the respective snap spring element is formed as a curved in a stable basic position in the extension of the manipulator arm, in particular arcuately stretched, leaf spring. With such springs a snap function is particularly well realized. In addition, such springs are simple and inexpensive to produce. In particular, the respective leaf spring is elongated or strip-shaped.

Das jeweilige Schnappfederelement kann mit seinen beiden Enden am Manipulatorarm gelagert sein. Grundsätzlich ist es jedoch auch möglich, dass das oder die Schnappfederelemente mit den jeweiligen beiden Enden an dem Applizierkopf gelagert sind.The respective snap spring element can be mounted with its two ends on the manipulator arm. In principle, however, it is also possible that the one or more snap spring elements are mounted with the respective two ends on the Applizierkopf.

Nach einer anderen Ausbildung der Erfindung weist der Manipulatorarm an seinem ausfahrbaren Ende eine Trägerplattform, insbesondere mit einem Aufnahmeraum, für das wenigstens eine Schnappfederelement auf. Die Trägerplattform kann einen Bodenabschnitt und zwei von dem Bodenabschnitt in Ausfahrrichtung ragende bzw. abstehende, einander gegenüberliegende Seitenabschnitte, insbesondere Fortsätze umfassen, zwischen denen das jeweilige Schnappfederelement gelagert ist. In dem Aufnahmeraum kann das wenigstens eine Schnappfederelement, insbesondere auch in der umgeschnappten Stellung, aufgenommen werden. Durch den Aufnahmeraum ist gewährleistet, dass genügend Platz für das Um- und Rückschnappen des oder der Schnappfederelemente zur Verfügung steht.According to another embodiment of the invention, the manipulator arm at its extendable end a support platform, in particular with a receiving space, for the at least one snap spring element. The carrier platform may comprise a bottom section and two side sections projecting from the bottom section in the extension direction and projecting, in particular extensions, between which the respective snap spring element is mounted. In the receiving space, the at least one snap spring element, in particular in the umgeschnappten position, are added. Through the receiving space ensures that there is enough space for the snap-back and snap of the snap spring elements or is available.

Das jeweilige Schnappfederelement kann dann mit seinen beiden Enden in entsprechende Ausnehmungen bzw. Aussparungen der beiden Seitenabschnitte lose und/oder verliersicher eingreifen. Das jeweilige Schnappfederelement kann also ohne Reib- oder Kraftschluss und ohne weitere Verbindungselemente gehalten werden. Die Ausnehmungen sind insbesondere an den Innenseiten der beiden Seitenabschnitte ausgebildet.The respective snap spring element can then engage with its two ends in corresponding recesses or recesses of the two side sections loosely and / or captively. The respective snap spring element can therefore be held without friction or frictional connection and without further connecting elements. The recesses are formed in particular on the inner sides of the two side sections.

Zusätzlich kann der jeweilige Seitenabschnitt auf Höhe der wenigstens einen Ausnehmung entlang einer Teilungslinie in zwei lösbar fest miteinander verbundene Teile geteilt sein. Dies ermöglicht, dass das oder die Schnappfederelemente ohne übermäßige Deformation in die Ausnehmungen eingesetzt werden können, und erst danach die beiden jeweiligen Teile miteinander verbunden werden.In addition, the respective side section can be divided at the level of the at least one recess along a dividing line into two parts which are detachably fixedly connected to one another. This allows the snap spring element (s) to be inserted into the recesses without excessive deformation, and only after that the two respective parts are connected together.

Nach einer weiteren Ausbildung der Erfindung kann das jeweilige Schnappfederelement an seinen beiden Enden in Ausfahrrichtung schwimmend gelagert sein. Eine schwimmende Lagerung kann beispielsweise durch das vorgenannte lose Eingreifen der beiden Enden des jeweiligen Schappfederelements in die entsprechenden Ausnehmungen der beiden Seitenabschnitte erreicht werden. In lateraler Richtung sind die beiden Enden des jeweiligen Schnappfederelements bevorzugt fixiert. Durch die schwimmende Lagerung kann die Lebensdauer des jeweiligen Schnappfederelements erhöht werden. Unter einer schwimmenden Lagerung ist dabei auch der Fall zu verstehen, dass die beiden Enden des jeweiligen Schnappfederelements in der jeweiligen Stellung, d.h. in der Ausgangsstellung und in der umgeschnappten Stellung, unbeweglich sind, aufgrund des Umschnappens oder Rückschnappens aber eine Bewegung stattfindet.According to a further embodiment of the invention, the respective snap spring element may be mounted floating at its two ends in the extension direction. A floating bearing can be achieved for example by the aforementioned loose engagement of the two ends of the respective Schappfederelements in the corresponding recesses of the two side sections. In the lateral direction, the two ends of the respective snap spring element are preferably fixed. The life of the respective snap spring element can be increased by the floating bearing. Under a floating bearing is also the case to understand that the two ends of the respective snap spring element in the respective position, ie in the starting position and in the umgeschnappten position, immovable, but due to the snap or snap back but a movement takes place.

Eine insbesondere schwimmende Lagerung des jeweiligen Schnappfederelements kann sich an beiden Enden des jeweiligen Schnappfederelements, insbesondere innerhalb der vorgenannten Ausnehmungen, in Ausfahrrichtung erstreckende Führungselemente, insbesondere Stifte, umfassen, die insbesondere beidseitig als lateraler Anschlag für die beiden Enden des jeweiligen Schnappfederelements wirken und/oder gegen die das jeweilige Schnappfederelement in lateraler Richtung abgestützt ist. Das jeweilige Schnappfederelement ist dann zwischen, bezüglich des jeweiligen Schnappfederelements, einander gegenüberliegenden Führungselementen angeordnet, insbesondere eingespannt.A particular floating bearing of the respective snap spring element may at both ends of the respective snap spring element, in particular within the aforementioned recesses, extending in the extension direction guide elements, in particular pins, which act on both sides in particular as a lateral stop for the two ends of the respective snap spring element and / or against which the respective snap spring element is supported in the lateral direction. The respective snap spring element is then arranged between, with respect to the respective snap spring element, opposing guide elements, in particular clamped.

Zur Beaufschlagung des jeweiligen Schnappfederelements mit einer entgegen der Ausfahrrichtung wirkenden Kraft ist es bevorzugt, wenn das jeweilige Schnappfederelement zwischen zwei mit dem Applizierkopf fest verbundenen Traversen bzw. Querverbindern gehalten ist. Vorzugsweise sind die beiden Traversen parallel zueinander und/oder auf der einer Applizierplatte gegenüberliegenden Seite des Applizierkopfs und beabstandet von dieser angeordnet.To act on the respective snap spring element with a force acting counter to the direction of extension, it is preferred if the respective snap spring element is held between two crossheads or cross connectors firmly connected to the applicator head. Preferably, the two traverses are arranged parallel to one another and / or on the side of the applicator head opposite to an applicator plate and spaced therefrom.

Vorzugsweise sind zwei insbesondere identische Schnappfederelemente vorgesehen, die insbesondere parallel zueinander angeordnet sind. Dies ist insbesondere dann von Vorteil, wenn die Schnappfederelemente als Blattfedern ausgebildet sind.Preferably, two in particular identical snap spring elements are provided, which are arranged in particular parallel to each other. This is particularly advantageous if the snap spring elements are designed as leaf springs.

Das jeweilige Schnappfederelement kann reversibel austauschbar sein. Es können mehrere Schnappfederelemente oder Gruppen von Schnappfederelementen vorgesehen sein, die sich in ihrer Federkennlinie voneinander unterscheiden und die selektiv zur Halterung des Applizierkopfs an dem Manipulatorarm verwendet werden. Hierdurch kann der Applikator an das jeweils zu etikettierende Produkt angepasst werden. Beispielsweise können bei einem Produkt, bei dem ein besonders weiches Aufsetzen des Applizierkopfs gewünscht ist, Schnappfederelemente mit kleinen Federhärten bzw. Federsteifigkeiten, flachen Federkennlinien und/oder vergleichsweise kleinen Maximalwerten der Federkraft, bei der die Schnappfederelemente umschnappen, eingesetzt werden. Bei Produkten, bei denen ein härteres Aufsetzen gewünscht ist, können Schnappfederelemente mit größeren Federhärten bzw. Federsteifigkeiten, steileren Federkennlinien und/oder vergleichsweise großen Maximalwerten eingesetzt werden.The respective snap spring element can be reversibly exchangeable. There may be provided a plurality of snap spring elements or groups of snap spring elements which differ in their spring characteristic from each other and which are selectively used to hold the Applizierkopfs on the manipulator. As a result, the applicator can be adapted to the respective product to be labeled. For example For example, in a product where a particularly soft touchdown of the applicator head is desired, snap spring elements having small spring stiffnesses, flat spring characteristics, and / or comparatively small maximum spring force values at which the snap spring elements snap over may be employed. For products where a harder touchdown is desired, snap spring elements with greater spring hardness or spring stiffness, steeper spring characteristics and / or comparatively large maximum values can be used.

Es kann - neben dem wenigstens einen Schnappfederelement - eine elastische Lagerung und/oder zusätzliche Federlagerung für eine Applizierplatte des Applizierkopfs vorgesehen sein. In diesem Fall liegt eine zweistufige Dämpfung bzw. Federung der Applizierplatte vor.It can be provided in addition to the at least one snap spring element - an elastic support and / or additional spring support for a Applizierplatte the Applizierkopfs. In this case, there is a two-stage damping or suspension of Applizierplatte.

Nach einer weiteren Ausbildung der Erfindung ist eine Zwangsführung vorgesehen, die dazu ausgebildet ist, ein Kippen des Applizierkopfs gegenüber der Ausfahrrichtung in einer stabilen Grundstellung und/oder bei einem Aus- und/oder Einfahren des Applizierkopfs zu unterbinden. Hierdurch kann eine hohe Positioniergenauigkeit der Etiketten auf den Waren erreicht werden. Insbesondere kann ein Kippen des Applizierkopfs auch unterbunden werden, wenn der Applizierkopf auf eine Ware auftritt, d.h. die Ware dem Applizierkopf einen Widerstand entgegensetzt. Die Zwangsführung kann wenigstens einen Stab umfassen, der in eine jeweilige gegenförmig ausgebildete Öffnung bzw. Stabaufnahme eingreift.According to a further embodiment of the invention, a positive guidance is provided, which is designed to prevent tilting of the applicator head relative to the extension direction in a stable basic position and / or during an extension and / or retraction of the applicator head. This allows a high positioning accuracy of the labels can be achieved on the goods. In particular, tilting of the applicator head can also be prevented if the applicator head encounters a product, i. the goods oppose the Applizierkopf a resistance. The positive guide may comprise at least one rod which engages in a respective counter-shaped opening or rod receptacle.

Bevorzugt ist eine Umschnapperkennungseinrichtung vorgesehen, um ein Umschnappen des Schnappfederelements, insbesondere aus einer stabilen Grundstellung, zu erkennen. Vorzugsweise ist der Applikator dazu ausgelegt, bei Erkennen eines Umschnappens das ausfahrbare Ende des Manipulatorarms und damit den Applizierkopf entgegen der Ausfahrrichtung zurückzuziehen. Bei der Umschnapperkennungseinrichtung kann es sich beispielsweise um einen Hall-Sensor oder einen Schalter handeln.Preferably, a Umschnapperkennungseinrichtung is provided to detect a snapping the snap spring element, in particular from a stable basic position. Preferably, the applicator is designed, upon detection of a snap-on, the extendable end of the manipulator arm and thus the Applizierkopf against the extension direction withdraw. The Umschnapperkennungseinrichtung may be, for example, a Hall sensor or a switch.

Das ausfahrbare Ende des Applikators kann beispielsweise mittels eines Spindelantriebs oder eines Pneumatikzylinders verfahrbar sein. Darüber hinaus kann eine Einrichtung vorgesehen sein, um den Applizierkopf um die Längsachse des Manipulatorarms zu drehen.The extendable end of the applicator can be moved, for example, by means of a spindle drive or a pneumatic cylinder. In addition, means may be provided to rotate the applicator head about the longitudinal axis of the manipulator arm.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen, der Figurenbeschreibung und der Zeichnung beschrieben.Further advantageous embodiments of the invention are described in the subclaims, the description of the figures and the drawing.

Die Erfindung wird im Folgenden beispielhaft unter Bezugnahme auf die Zeichnung beschrieben. Es zeigen:

Fig. 1
einen erfindungsgemäßen Applikator mit einem Applizierkopf, der über zwei bistabile Blattfedern an einem Manipulatorarm gehaltert ist, wobei die Blattfedern in einer stabilen Grundstellung dargestellt sind,
Fig. 2
eine vergrößerte Darstellung des Applizierkopfs aus Fig. 1 in einer anderen Perspektive,
Fig. 3
den Applikator aus Fig. 1, wobei die Blattfedern in einer stabilen umgeschnappten Stellung dargestellt sind,
Fig. 4
eine Trägerplattform, in der die aus Fig. 1 bekannten Blattfedern aufgenommen sind, wobei die Blattfedern in einer stabilen Grundstellung dargestellt sind, und
Fig. 5
die Trägerplattform aus Fig. 4, wobei die Blattfedern in einer stabilen umgeschnappten Stellung dargestellt sind.
The invention will now be described by way of example with reference to the drawings. Show it:
Fig. 1
an applicator according to the invention with an applicator head, which is held by two bistable leaf springs on a manipulator arm, wherein the leaf springs are shown in a stable basic position,
Fig. 2
an enlarged view of the Applizierkopfs Fig. 1 in a different perspective,
Fig. 3
the applicator off Fig. 1 wherein the leaf springs are shown in a stable, snapped position,
Fig. 4
a carrier platform in which the Fig. 1 known leaf springs are recorded, wherein the leaf springs are shown in a stable basic position, and
Fig. 5
the carrier platform Fig. 4 , wherein the leaf springs are shown in a stable umgeschnappten position.

Der erfindungsgemäße Applikator 11 zum Aufbringen von nicht gezeigten Etiketten auf Waren umfasst einen Manipulatorarm 13, an dessen einem Ende ein Applizierkopf oder Stempel 15 vorgesehen ist. Dieses Ende des Manipulatorarms 13 ist axial, d.h. längs der Längserstreckung des Manipulatorarms 13, und teleskopisch aus- und einfahrbar. Die Ausfahrrichtung 17 des Manipulatorarms 13 entspricht also der Richtung der Längserstreckung des Manipulatorarms 13. Um das Ausfahren des Applizierkopfs 15 zu ermöglichen, ist der Manipulatorarm 13 als Spindelantrieb ausgebildet, der eine nicht erkennbare Gewindestange umfasst, an deren freiem Ende der Applizierkopf 15 befestigt ist und die über ein Riemengetriebe, insbesondere ein Zahnriemengetriebe, von dem lediglich die beiden Riemenscheiben 19 und 21 dargestellt sind, von einem Motor 23 antreibbar ist. In Fig. 1 ist der Applizierkopf 15 in einer geringfügig ausgefahrenen Position dargestellt, insbesondere bevor ein Etikett auf eine Produkt aufgebracht wird. In vollständig ausgefahrenem Zustand kann der Manipulatorarm 13 annährend die doppelte Länge aufweisen.The applicator 11 according to the invention for applying labels, not shown, to goods comprises a manipulator arm 13, at one end of an applicator or punch 15 is provided. This end of the manipulator arm 13 is axially, ie along the longitudinal extension of the manipulator arm 13, and telescopically extended and retracted. The extension direction 17 of the manipulator arm 13 thus corresponds to the direction of the longitudinal extension of the manipulator arm 13. To allow the extension of the Applizierkopfs 15, the manipulator arm 13 is formed as a spindle drive comprising an unrecognizable threaded rod, at the free end of the Applizierkopf 15 is attached and which is drivable by a motor 23 via a belt transmission, in particular a toothed belt transmission, of which only the two pulleys 19 and 21 are shown. In Fig. 1 the applicator head 15 is shown in a slightly extended position, especially before a label is applied to a product. When fully extended, the manipulator arm 13 may be approximately twice the length.

Wie insbesondere aus der vergrößerten Darstellung des Applizierkopfs 15 in Fig. 1 erkennbar ist, umfasst der Applizierkopf 15 eine Lochplatte 59 und einen Lüfter 61, der ermöglicht, dass ein jeweilige Etikett angesaugt und an der Lochplatte 59 gehalten wird. Zum Anbringen des jeweiligen Etiketts an einer Ware wird der Manipulatorarm 13 dann in Richtung der Ware ausgefahren, wobei das jeweilige Etikett bei Kontakt mit der Ware aufgrund einer an der Unterseite des Etiketts angebrachten Klebeschicht an der Ware haften bleibt. Die Lochplatte 59 ist über insbesondere vier Rahmenstäbe 63 auf einer Bodenplatte 65 des Applizierkopfs 15 abgestützt. Der Lüfter 61 ist innerhalb des durch die Bodenplatte 65, die Rahmenstäbe 63 und die Lochplatte 59 gebildeten Rahmens angeordnet.In particular, from the enlarged view of the Applizierkopfs 15 in Fig. 1 can be seen, the Applizierkopf 15 comprises a perforated plate 59 and a fan 61, which allows a respective label is sucked and held on the perforated plate 59. For attaching the respective label to a product, the manipulator arm 13 is then extended in the direction of the goods, wherein the respective label adheres to the goods in contact with the goods due to an attached to the underside of the label adhesive layer. The perforated plate 59 is supported on in particular four frame bars 63 on a bottom plate 65 of the Applizierkopfs 15. The fan 61 is disposed within the frame formed by the bottom plate 65, the frame bars 63 and the perforated plate 59.

Erfindungsgemäß ist der Applizierkopf 15 über zwei bistabile Schnapp-Blattfedern 25, 27 an dem ausfahrbaren Ende des Manipulatorarms 13 befestigt. Die beiden Blattfedern 25, 27 sind in ihrer stabilen Grundstellung in Ausfahrrichtung des Manipulatorarms 13 gebogen. Die beiden identischen, parallel zueinander verlaufenden Blattfedern 25, 27 sind mit ihren jeweiligen beiden Enden durch eine Trägerplattform 29 abgestützt, die an dem ausfahrbaren Ende des Manipulatorarms 13 angebracht ist. Zumindest in etwa mittig sind die beiden Blattfedern 25, 27 zwischen zwei mit dem Applizierkopf 15 fest verbundenen Traversen 31, 33 gehalten. Die beiden Traversen 31, 33 sind fest mit der Bodenplatte 65 des Applizierkopfs 15 verbunden.According to the invention, the applicator head 15 is fastened to the extendable end of the manipulator arm 13 via two bistable snap leaf springs 25, 27. The two leaf springs 25, 27 are bent in their stable basic position in the extension direction of the manipulator arm 13. The two identical, mutually parallel leaf springs 25, 27 are supported with their respective two ends by a support platform 29 which is attached to the extendable end of the manipulator arm 13. At least approximately in the middle, the two leaf springs 25, 27 between two fixedly connected to the Applizierkopf 15 trusses 31, 33 are held. The two trusses 31, 33 are firmly connected to the bottom plate 65 of the Applizierkopfs 15.

Wird der Applizierkopf 15 beim Ausfahren des Manipulatorarms 13 gegen ein Produkt gedrückt, um dort ein Etikett zu applizieren, schnappen die beiden Blattfedern bei Überschreiten eines bestimmten Anpressdrucks aus ihrer jeweiligen stabilen Grundstellung, wie sie in Fig. 1 gezeigt ist, in eine umgeschnappte Stellung um, wie sie in Fig. 3 dargestellt ist. Die Federkennlinie der beiden Blattfedern 25, 27 ist aufgrund ihrer Ausbildung als Schnappfedern dabei derart, dass beim Umschnappen die Federkraft und damit der auf das jeweilige Produkt aufgebrachte Druck gegenüber dem Anpressdruck, der unmittelbar vor dem Umschnappen auf das Produkt wirkt, reduziert ist. Hierdurch ist ein sanftes Aufsetzen des Applizierkopfs auf dem Produkt möglich. Beschädigungen des Produkts bzw. der Verpackung des Produkts können vermieden werden.If the Applizierkopf 15 pressed during extension of the manipulator arm 13 against a product to apply a label there, grab the two leaf springs when exceeding a certain contact pressure from their respective stable basic position, as in Fig. 1 is shown in a umgeschnappte position, as in Fig. 3 is shown. The spring characteristic of the two leaf springs 25, 27 is due to their design as snap springs in such a way that when snapping the spring force and thus the pressure applied to the respective product pressure against the contact pressure, which acts on the product immediately before snapping, is reduced. As a result, a gentle placement of the applicator is possible on the product. Damage to the product or packaging of the product can be avoided.

Ferner ist ein Hall-Sensor 67 vorgesehen, mit dem die Umschnappbewegung der beiden Blattfedern 25, 27 detektiert werden kann. Hierzu ist der Applizierkopf 15 mit einem nicht dargestellten, seitlich an den beiden Traversen 31, 33 angebrachten Magneten versehen, der sich beim Umschnappen der beiden Blattfedern 25, 27 schlagartig dem Hall-Sensor 67 annähert. Sobald ein derartiges Umschnappen detektiert wird, wird der Applizierkopf 15 von dem jeweiligen Produkt zurückgezogen.Further, a Hall sensor 67 is provided, with which the Umschnappbewegung the two leaf springs 25, 27 can be detected. For this is the Applizierkopf 15 with a non-illustrated, laterally attached to the two trusses 31, 33 provided magnet which abruptly approaches the Hall sensor 67 when snapping the two leaf springs 25, 27. Once such a snap is detected, the applicator head 15 is withdrawn from the respective product.

Die Zeitverzögerung vom Erkennen des Umschnappens bis zum Reversieren des Antriebs, d.h. die Zeit, in der der Applizierkopf 15 durch den Manipulatorarm 13 weiterhin in Richtung des jeweiligen Produkts ausgefahren wird, stellt hierbei kein Problem dar, da der in dieser Zeit von dem ausfahrbaren Ende des Manipulatorarms 13 zurückgelegte Weg durch ein durch das Umschnappen der beiden Blattfedern 25, 27 bewirktes Zurückziehen des Applizierkopfs 15 von dem Produkt bei entsprechend gewählter Ausfahrgeschwindigkeit und Verarbeitungsgeschwindigkeit des Umschnapp-Erkennungssignals kompensiert bzw. überkompensiert werden kann.The time delay from detecting the snap up to reversing the drive, i. the time in which the Applizierkopf 15 is further extended by the manipulator arm 13 in the direction of the respective product, this poses no problem, since the distance covered in this time by the extendable end of the manipulator arm 13 by a by snapping the two leaf springs 25th 27 causes retraction of the applicator head 15 from the product at a correspondingly selected extension speed and processing speed of the snap-detection signal can be compensated or overcompensated.

Die Fig. 3 zeigt die stabile umgeschnappte Stellung der beiden Blattfedern 25, 27, nachdem der Applizierkopf 15 auf ein Produkt oder eine Verpackung aufgetroffen ist. Die Blattfedern 25, 27 sind umgeschnappt und bleiben in der umgeschnappten Stellung, bis der Applizierkopf 15 aus seiner ausgefahrenen Position wieder annährend vollständig in seine eingezogene Position zurückgefahren ist, wie es in Fig. 3 dargestellt ist.The Fig. 3 shows the stable umgeschnappte position of the two leaf springs 25, 27 after the Applizierkopf 15 has hit a product or packaging. The leaf springs 25, 27 are snapped and remain in the umgeschnappten position until the Applizierkopf 15 is moved back from its extended position almost completely back to its retracted position, as in Fig. 3 is shown.

Wie aus Fig. 2 ersichtlich ist, taucht beim Zurückfahren des Applizierkopfs 15 ein an dem Manipulatorarm 13 angebrachter Stift 73, insbesondere Metallstift, durch den Bodenabschnitt 43 der Trägerplattform 29 hindurch und drückt auf die Traverse 31 und damit die beiden Blattfedern 25, 27 wieder in die stabile Grundstellung zurück, d.h. es erfolgt ein Rückschnappen. Der Stift 73 ist nicht starr mit dem Manipulatorarm 13 verbunden, sondern dort federgedämpft gelagert. Hierdurch wird ein hartes Auftreffen des Applizierkopfs 15 auf den Stift 73 verhindert.How out Fig. 2 it can be seen, immersed when moving back the Applizierkopfs 15 attached to the manipulator arm 13 pin 73, in particular metal pin, through the bottom portion 43 of the support platform 29 and presses on the traverse 31 and thus the two leaf springs 25, 27 back to the stable basic position, ie there is a snap back. The pin 73 is not rigid with the manipulator arm 13 connected, but stored there spring-damped. As a result, a hard impact of Applizierkopfs 15 is prevented on the pin 73.

Grundsätzlich ist es auch möglich, dass Blattfedern verwendet werden, die - sobald der Applizierkopf von dem jeweiligen Produkt reversiert wird, d.h. sobald von dem jeweiligen Produkt dem Applizierkopf keine Kraft mehr entgegengesetzt wird - aus der in Fig. 3 gezeigten Stellung aufgrund ihrer Rückstellkraft automatisch wieder in die in Fig. 1 gezeigte Stellung zurückschnappen.In principle, it is also possible that leaf springs are used, which - as soon as the Applizierkopf is reversed by the respective product, ie as soon as the Applizierkopf no force is opposed by the respective product - from the in Fig. 3 shown position due to their restoring force automatically back to the in Fig. 1 snapping back to the position shown.

Gemäß einer nicht gezeigten Weiterbildung sind um die Rahmenstäbe 63 Spiralfedern angeordnet, und die Rahmenstäbe 63 können in die Bodenplatte 65 eintauchen. Hierdurch kann eine zusätzliche Dämpfung der Lochplatte 59 beim Aufsetzen auf ein Produkt erreicht werden.According to a further development not shown, spiral springs are arranged around the frame bars 63, and the frame bars 63 can dip into the bottom plate 65. In this way, an additional damping of the perforated plate 59 can be achieved when placed on a product.

Der Applizierkopf 15 weist an zwei gegenüberliegenden Seiten jeweils einen in Ausfahrrichtung 17 gerichteten Führungsstab 35, 37 auf, der in eine jeweilige, an einer jeweiligen Seite der Trägerplattform 29 angebrachte ringförmig ausgebildete Öse 39, 41 eingreift. Hierdurch wird eine Führung des Applizierkopfs 15 relativ zu der Trägerplattform erreicht. Ein Kippen des Applizierkopfs 15 gegenüber der Ausfahrrichtung 17 des Manipulierarms 13 beim Aus- und Einfahren des Applizierkopfs 15 und insbesondere auch beim Aufsetzen des Applizierkopfs 15 auf das jeweilige Produkt kann dadurch zuverlässig vermieden werden.The Applizierkopf 15 has on two opposite sides in each case a directed in the extension direction 17 guide rod 35, 37, which engages in a respective, attached to a respective side of the support platform 29 ring-shaped eyelet 39, 41. As a result, a guide of the Applizierkopfs 15 is achieved relative to the support platform. A tilting of the Applizierkopfs 15 relative to the extension direction 17 of the Manipulierarms 13 during extension and retraction of the Applizierkopfs 15 and in particular also when placing the Applizierkopfs 15 to the respective product can be reliably avoided.

In den Fig. 4 und 5 ist die Lagerung der beiden Blattfedern 25, 27 in einer Trägerplattform 29, die sich von der Trägerplattform gemäß den Fig. 1-3 in Gestalt der Ösen 39, 41 geringfügig unterscheidet, näher dargestellt. Wie aus den Fig. 4 und 5 erkennbar ist, umfasst die Trägerplattform 29 einen Bodenabschnitt 43, der an zwei gegenüberliegenden Seiten jeweils einen in Ausfahrrichtung 17 weisenden Wandabschnitt 45, 47 aufweist, wobei die beiden Blattfedern 25, 27 zwischen diesen beiden Wandabschnitten 45, 47 gelagert und eingespannt sind. Hierzu greifen die beiden Blattfedern 25, 27 mit ihren jeweiligen beiden Enden in jeweilige Ausnehmungen 49 der beiden Wandabschnitte 45, 47 ein. Im nicht eingebauten Zustand sind die beiden Blattfedern 25, 27 jeweils flach bzw. nicht gebogen. Die Länge der Blattfedern 25, 27 ist geringfügig größer als die zur Verfügung stehende Einspannlänge zwischen den beiden jeweiligen Ausnehmungen 49, und beim Einsetzen werden die Blattfedern 25, 27 gespannt. Der zwischen den beiden Wandabschnitten 45, 47 gebildete Raum kann als Aufnahmeraum für die beiden Blattfedern 25, 27 bezeichnet werden.In the Fig. 4 and 5 is the storage of the two leaf springs 25, 27 in a support platform 29 extending from the support platform according to the Fig. 1-3 in the form of eyelets 39, 41 slightly different, shown in more detail. Like from the Fig. 4 and 5 can be seen, the support platform 29 comprises a bottom portion 43 which on two opposite sides in each case one in the extension direction 17 facing wall portion 45, 47, wherein the two leaf springs 25, 27 are mounted and clamped between these two wall sections 45, 47. For this purpose, the two leaf springs 25, 27 engage with their respective two ends in respective recesses 49 of the two wall sections 45, 47. When not installed, the two leaf springs 25, 27 are each flat or not bent. The length of the leaf springs 25, 27 is slightly larger than the available clamping length between the two respective recesses 49, and when inserting the leaf springs 25, 27 stretched. The space formed between the two wall sections 45, 47 can be referred to as a receiving space for the two leaf springs 25, 27.

Das jeweilige Ende der jeweiligen Blattfeder 25, 27 steht dabei an zwei, in der jeweiligen zugeordneten Ausnehmung 49 angeordneten, in Ausfahrrichtung 17 gerichteten Stifte 51, 53 an (die jedoch nur zu der Blattfeder 27 dargestellt sind) und ist gegen diese abgestützt. Die beiden Blattfedern 25, 27 und die Trägerplattform 29 sind damit nicht fest miteinander verbunden, sondern die beiden Blattfedern 25, 27 greifen lediglich lose in die Trägerplattform 29 ein. Die Ausnehmungen 49 sind dabei höher als die Dicke der Blattfedern 25, 27. Dadurch sind die Blattfedern 25, 27 nur an den Stiften 51, 53 geführt und können frei innerhalb der Ausnehmungen 49 umschnappen. Damit ist eine schwimmende Lagerung der beiden Blattfedern 25, 27 in der Trägerplattform 29 realisiert. In der jeweiligen stabilen Stellung, d.h. wenn kein Umschnappen oder Rückschnappen stattfindet, sind die Blattfedern 25, 27 jedoch unbeweglich.The respective end of the respective leaf spring 25, 27 stands on two, arranged in the respective associated recess 49, in the extension direction 17 directed pins 51, 53 (which, however, are shown only to the leaf spring 27) and is supported against it. The two leaf springs 25, 27 and the support platform 29 are thus not firmly connected to each other, but the two leaf springs 25, 27 only engage loosely in the support platform 29 a. The recesses 49 are higher than the thickness of the leaf springs 25, 27. As a result, the leaf springs 25, 27 are guided only on the pins 51, 53 and can snap freely within the recesses 49. For a floating mounting of the two leaf springs 25, 27 realized in the support platform 29. In the respective stable position, i. however, if there is no snap or snapback, the leaf springs 25, 27 are immovable.

Um die beiden Blattfedern 25, 27 verliersicher in der Trägerplattform 29 zu halten, sind die beiden Randabschnitte 45, 47 jeweils derart zweiteilig ausgebildet, dass die in Fig. 4 in Ausfahrrichtung 17 noch offenen Ausnehmungen 49 jeweils durch eine entsprechende Abdeckung 55 und 57 abgedeckt sind, wobei in den Fig. 4 und 5 entsprechende Teilungslinien 69, 71 erkennbar sind. Grundsätzlich sind aber auch andere, insbesondere nicht zweiteilige Ausbildungen möglich.In order to keep the two leaf springs 25, 27 captive in the support platform 29, the two edge portions 45, 47 are each formed in such a two-part that the in Fig. 4 in the extension 17 still open recesses 49 each by a corresponding cover 55 and 57th are covered, wherein in the Fig. 4 and 5 corresponding division lines 69, 71 can be seen. In principle, however, other, in particular not two-part training are possible.

Wie aus den vorstehenden Erläuterungen deutlich geworden ist, kann aufgrund der Verwendung von Schnapp-Federelementen ein besonders sanftes und damit schonendes Aufbringen von Etiketten auf Waren erreicht werden.As has become clear from the above explanations, a particularly gentle and therefore gentle application of labels to goods can be achieved due to the use of snap-spring elements.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1111 Applikatorapplicator 1313 Manipulatorarmmanipulator 1515 Applizierkopfapplicator 1717 Ausfahrrichtungof extension 1919 Riemenscheibepulley 2121 Riemenscheibepulley 2323 Motorengine 2525 Schnapp-BlattfederSnap-leaf spring 2727 Schnapp--BlattfederSnap - leaf spring 2929 Trägerplattformcarrier platform 3131 Traversetraverse 3333 Traversetraverse 3535 FührungsstabCorporate Office 3737 FührungsstabCorporate Office 3939 Öseeyelet 4141 Öseeyelet 4343 Bodenabschnittbottom section 4545 Wandabschnittwall section 4747 Wandabschnittwall section 4949 Ausnehmungrecess 5151 Stiftpen 5353 Stiftpen 5555 Abdeckungcover 5757 Abdeckungcover 5959 Lochplatteperforated plate 6161 LüfterFan 6363 Rahmenstabframe bar 6565 Bodenplattebaseplate 6767 Hall-SensorHall sensor 6969 Teilungsliniedividing line 7171 Teilungsliniedividing line 7373 Stiftpen

Claims (15)

Applikator zum Aufbringen von Etiketten auf Waren, mit einem ausfahrbaren, an dem ausfahrbaren Ende mit einem Applizierkopf (15) versehenen Manipulatorarm (13),
dadurch gekennzeichnet,
dass der Applizierkopf (15) über wenigstens ein Schnappfederelement (25, 27) an dem Manipulatorarm (13) gehaltert ist.Applicator for applying labels to goods, comprising an extendable manipulator arm (13) provided on the extendable end with an applicator head (15),
characterized,
in that the applicator head (15) is held on the manipulator arm (13) via at least one snap-spring element (25, 27). Applikator nach Anspruch 1,
dadurch gekennzeichnet,
dass das jeweilige Schnappfederelement (25, 27) als ein bistabiles Schnappfederelement ausgebildet ist.Applicator according to claim 1,
characterized,
that the respective snap spring element (25, 27) is designed as a bistable snap spring element. Applikator nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass der Applikator (11) derart ausgelegt ist, dass das Rückschnappen des jeweiligen Schnappfederelements (25, 27) aus einer stabilen umgeschnappten Stellung in eine stabile Grundstellung durch Einfahren des Applizierkopfs (15) gegen einen am Manipulierarm (13) vorgesehenen Anschlag (73) erfolgt.Applicator according to claim 1 or 2,
characterized,
in that the applicator (11) is designed such that the snap-in of the respective snap spring element (25, 27) from a stable, snapped-over position into a stable basic position takes place by retracting the applicator head (15) against a stop (73) provided on the manipulating arm (13) , Applikator nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass das jeweilige Schnappfederelement (25, 27) als eine in einer stabilen Grundstellung in Ausfahrrichtung (17) des Manipulatorarms (13) gebogene, insbesondere bogenförmig gespannte, Blattfeder ausgebildet ist.Applicator according to at least one of the preceding claims,
characterized,
that the respective snap spring element (25, 27) as one in a stable basic position in the extension direction (17) of the manipulator arm (13) curved, in particular arcuately stretched, leaf spring is formed. Applikator nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass das jeweilige Schnappfederelement (25, 27) mit seinen beiden Enden am Manipulatorarm (13) gelagert ist.Applicator according to at least one of the preceding claims,
characterized,
that the respective snap spring element (25, 27) is mounted with its two ends on the manipulator arm (13). Applikator nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass der Manipulatorarm (13) an seinem ausfahrbaren Ende eine Trägerplattform (29) aufweist, wobei bevorzugt die Trägerplattform (29) einen Bodenabschnitt (43) und zwei von dem Bodenabschnitt (43) in Ausfahrrichtung (17) ragende, einander gegenüberliegende Seitenabschnitte (45, 47), insbesondere Fortsätze, umfasst, zwischen denen das jeweilige Schnappfederelement (25, 27) gelagert ist.Applicator according to at least one of the preceding claims,
characterized,
that the manipulator arm (13) at its extendable end of a support platform (29), wherein preferably the support platform (29) has a bottom portion (43) and two from the bottom portion (43) projecting in the extension (17), opposite side portions (45, 47), in particular extensions, between which the respective snap spring element (25, 27) is mounted. Applikator nach Anspruch 6,
dadurch gekennzeichnet,
dass das jeweilige Schnappfederelement (25, 27) mit seinen beiden Enden in entsprechende Ausnehmungen (49) der beiden Seitenabschnitte (45, 47) lose eingreift.Applicator according to claim 6,
characterized,
that the respective snap spring element (25, 27) with its two ends loosely engages in corresponding recesses (49) of the two side sections (45, 47). Applikator nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass das jeweilige Schnappfederelement (25, 27) an seinen beiden Enden in Ausfahrrichtung (17) schwimmend gelagert ist.Applicator according to at least one of the preceding claims,
characterized,
that the respective snap spring element (25, 27) is mounted floating at its two ends in the extension direction (17). Applikator nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet ,
dass eine Lagerung des jeweiligen Schnappfederelements (25, 27) sich an beiden Enden des jeweiligen Schnappfederelements (25, 27) in Ausfahrrichtung erstreckende Führungselemente (51, 53), insbesondere Stifte, umfasst, die als lateraler Anschlag für die beiden Enden des jeweiligen Schnappfederelements (25, 27) wirken.Applicator according to at least one of the preceding claims,
characterized ,
in that a bearing of the respective snap spring element (25, 27) comprises guide elements (51, 53) extending in the extension direction at both ends of the respective snap spring element (25, 27), in particular pins, serving as a lateral stop for the two ends of the respective snap spring element ( 25, 27) act. Applikator nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet ,
dass zur Beaufschlagung des jeweiligen Schnappfederelements (25, 27) mit einer entgegen der Ausfahrrichtung (17) wirkenden Kraft das jeweilige Schnappfederelement (25, 27) zwischen zwei mit dem Applizierkopf (15) fest verbundenen Traversen (31, 33) gehalten ist.Applicator according to at least one of the preceding claims,
characterized ,
in that the respective snap spring element (25, 27) is held between two traverses (31, 33) fixedly connected to the applicator head (15) in order to act on the respective snap spring element (25, 27) with a force acting counter to the extension direction (17). Applikator nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet ,
dass zwei insbesondere identische Schnappfederelemente (25, 27) vorgesehen sind, die insbesondere parallel zueinander angeordnet sind.Applicator according to at least one of the preceding claims,
characterized ,
that two in particular identical snap spring elements (25, 27) are provided, which are arranged in particular parallel to each other. Applikator nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet ,
dass das jeweilige Schnappfederelement (25, 27) reversibel austauschbar ist und/oder mehrere Schnappfederelemente (25, 27) oder Gruppen von Schnappfederelementen (25, 27) vorgesehen sind, die sich in ihrer Federkennlinie voneinander unterscheiden und die selektiv zur Halterung des Applizierkopfs (15) an dem Manipulatorarm (13) verwendet werden.Applicator according to at least one of the preceding claims,
characterized ,
that the respective snap spring element (25, 27) is reversibly interchangeable and / or a plurality of snap spring elements (25, 27) or groups of snap spring elements (25, 27) are provided which differ in their spring characteristic and which selectively for holding the Applizierkopfs (15 ) can be used on the manipulator arm (13). Applikator nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet ,
dass eine elastische Lagerung und/oder eine zusätzliche Federlagerung für eine Applizierplatte (59) des Applizierkopfs (15) vorgesehen ist.Applicator according to at least one of the preceding claims,
characterized ,
that an elastic storage and / or an additional spring mounting for a Applizierplatte (59) of Applizierkopfs (15) is provided. Applikator nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet ,
dass eine Zwangsführung (35, 37, 39, 41) vorgesehen ist, die dazu ausgebildet ist, ein Kippen des Applizierkopfs (15) gegenüber der Ausfahrrichtung (17) in einer stabilen Grundstellung und/ oder bei einem Aus- und/oder Einfahren des Applizierkopfs (13) zu unterbinden.Applicator according to at least one of the preceding claims,
characterized ,
in that a positive guide (35, 37, 39, 41) is provided, which is designed to tilt the applicator head (15) relative to the extension direction (17) in a stable basic position and / or during extension and / or retraction of the applicator head (13) to prevent. Applikator nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet ,
dass eine Umschnapperkennungseinrichtung vorgesehen ist, um ein Umschnappen des Schnappfederelements (25, 27) zu erkennen, wobei insbesondere der Applikator (11) dazu ausgelegt ist, bei Erkennen eines Umschnappens das ausfahrbare Ende des Manipulatorarms (13) entgegen der Ausfahrrichtung (17) zurückzuziehen.Applicator according to at least one of the preceding claims,
characterized ,
that a Umschnapperkennungseinrichtung is provided to detect a snapping of the snap spring element (25, 27), wherein in particular the applicator (11) is adapted to retract the extendable end of the manipulator arm (13) counter to the direction of extension (17) upon detection of a Umschnappens.
EP20130159194 2012-03-21 2013-03-14 Label Applicator Active EP2641836B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106715276A (en) * 2014-11-06 2017-05-24 欧姆龙株式会社 Suction chucking head and affixing device provided with same
WO2024028355A1 (en) * 2022-08-01 2024-02-08 Dover Europe Sàrl An applicator pad assembly

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US2035971A (en) * 1933-03-31 1936-03-31 Pneumatic Scale Corp Pad for labeling machines
WO2000075019A1 (en) * 1999-06-03 2000-12-14 Stephen Swinburne Apparatus and method for applying labels
US20040144497A1 (en) * 2003-01-24 2004-07-29 Bixen Robert W. Spring mount for label applicator tamp pad
DE102007037094A1 (en) * 2007-08-07 2009-02-12 Iwk Verpackungstechnik Gmbh Label applying method for tube filling machine, involves peeling label from carrier film, transferring label from transfer head, and pressing label slightly on external surface of tube by using pressure body
DE102008032019A1 (en) * 2008-07-07 2010-01-14 Bizerba Gmbh & Co. Kg Labeling device for tagging system for applying labels on goods, has extended manipulator arm provided at extendable end with punch head
EP2298510A1 (en) * 2009-09-14 2011-03-23 Bizerba GmbH & Co. KG Robot with delta kinematics

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EP1385697A4 (en) * 2001-04-11 2009-06-24 Avery Dennison Corp Label applicator, method and label therefor

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Publication number Priority date Publication date Assignee Title
US2035971A (en) * 1933-03-31 1936-03-31 Pneumatic Scale Corp Pad for labeling machines
WO2000075019A1 (en) * 1999-06-03 2000-12-14 Stephen Swinburne Apparatus and method for applying labels
US20040144497A1 (en) * 2003-01-24 2004-07-29 Bixen Robert W. Spring mount for label applicator tamp pad
DE102007037094A1 (en) * 2007-08-07 2009-02-12 Iwk Verpackungstechnik Gmbh Label applying method for tube filling machine, involves peeling label from carrier film, transferring label from transfer head, and pressing label slightly on external surface of tube by using pressure body
DE102008032019A1 (en) * 2008-07-07 2010-01-14 Bizerba Gmbh & Co. Kg Labeling device for tagging system for applying labels on goods, has extended manipulator arm provided at extendable end with punch head
EP2298510A1 (en) * 2009-09-14 2011-03-23 Bizerba GmbH & Co. KG Robot with delta kinematics

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106715276A (en) * 2014-11-06 2017-05-24 欧姆龙株式会社 Suction chucking head and affixing device provided with same
WO2024028355A1 (en) * 2022-08-01 2024-02-08 Dover Europe Sàrl An applicator pad assembly

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