EP3549880B1 - Pressing device with motor - Google Patents

Pressing device with motor Download PDF

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Publication number
EP3549880B1
EP3549880B1 EP19162447.7A EP19162447A EP3549880B1 EP 3549880 B1 EP3549880 B1 EP 3549880B1 EP 19162447 A EP19162447 A EP 19162447A EP 3549880 B1 EP3549880 B1 EP 3549880B1
Authority
EP
European Patent Office
Prior art keywords
press
unit
product package
adhesive label
linear movement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19162447.7A
Other languages
German (de)
French (fr)
Other versions
EP3549880A1 (en
Inventor
Frank Tautz
Markus Dauwe
Udo Henrichs
Andreas Reichert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Multivac Marking and Inspection GmbH and Co KG
Original Assignee
Multivac Marking and Inspection GmbH and Co KG
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Publication of EP3549880A1 publication Critical patent/EP3549880A1/en
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Publication of EP3549880B1 publication Critical patent/EP3549880B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C1/00—Labelling flat essentially-rigid surfaces
    • B65C1/04—Affixing labels, e.g. wrap-around labels, to two or more flat surfaces of a polyhedral article
    • B65C1/042—Affixing labels, e.g. wrap-around labels, to two or more flat surfaces of a polyhedral article using two or more applicators, e.g. cooperating rollers or brushes
    • B65C1/045—Affixing labels, e.g. wrap-around labels, to two or more flat surfaces of a polyhedral article using two or more applicators, e.g. cooperating rollers or brushes acting one after the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C1/00—Labelling flat essentially-rigid surfaces
    • B65C1/04—Affixing labels, e.g. wrap-around labels, to two or more flat surfaces of a polyhedral article
    • B65C1/042—Affixing labels, e.g. wrap-around labels, to two or more flat surfaces of a polyhedral article using two or more applicators, e.g. cooperating rollers or brushes
    • 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
    • B65C9/30—Rollers
    • 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 a pressing device for a labeling machine.
  • Food products are often placed or portioned in a deep-drawn plastic tray and then the tray is sealed airtight with a plastic film by means of, for example, a heat-sealed seam.
  • additionally printed labels are applied to the product packaging.
  • Tape-shaped or strip-shaped labels which can also extend over the side surfaces of a product packaging, that is to say at least partially encircle the product packaging, are becoming increasingly popular. It is important that the labels are applied and pressed straight and without creases, and that this takes place in the fastest and most continuous flow of goods possible on a production line.
  • a labeling device in which a label is pressed onto the underside of a packaging tray by means of linearly displaceable pressure elements.
  • a pressing device is known which presses a label on the top of a package by means of linear movement of a roller element.
  • Another device is known for slipping on a label protrusion on the underside of a package.
  • the object of the present invention is to provide an improved pressing device for pressing an adhesive label onto a product packaging.
  • the sliding element can be a sliding plate with a low coefficient of friction, but it can also have rollers or actively driven belts in order to transport the product packaging through the transport unit to support. Upstream of the conveyor line there is a device as part of the labeling machine which is configured to apply the adhesive label to the top of the product packaging.
  • the pressing device further comprises a motor, e.g. B.
  • the pressing unit is configured to press one end of the adhesive label onto an underside of the product packaging by means of said linear movement.
  • the product packaging thus essentially reaches the pressing device with the label lying horizontally on top of the product packaging, the protruding part of which is initially folded over by the folding element, preferably essentially vertically downwards.
  • the folding element can be a straight or curved folding strip, a straight or curved folding rod or a combination of several such components in the form of a deflection link.
  • the pressing device touches the end of the downward-facing adhesive label on the underside of the product packaging, the product packaging resting on the correspondingly shaped sliding element in such a way that during its movement along the direction of transport, the area of its underside remains free where the pressing of the Adhesive label takes place.
  • a usually narrow, elongated label can extend from an upper side, along a lateral side to an underside of a product packaging and thus encompass a product packaging.
  • the adhesive label serves for an appealing and informative product presentation.
  • One end of the adhesive label can be pressed onto the underside of the product packaging by means of the pressing device described here while the product packaging is being transported.
  • the pressure unit preferably comprises a pressure brush or a pressure roller or a pressure squeegee.
  • the pressure brush usually comprises elongated bristles arranged along a line with a narrow width, which can point vertically, but also inclined upwards.
  • the length of the pressure brush along the transport direction of the product packaging preferably corresponds to at least the width of the adhesive label to be pressed.
  • the pressing unit is arranged in such a way that the linear movement carried out by it is inclined, preferably at an angle ā‡ of approximately -65 Ā° to -75 Ā°, to the transport direction of the product packaging.
  • Such a movement adds up two movements, namely that orthogonal to the transport direction or to the movement of the product packaging which is used to brush the adhesive label and the movement which follows the product packaging along the transport direction. This means that the adhesive label can be brushed on during the continuous movement of the product packaging in the continuous flow of goods.
  • the pressure unit is arranged on a slide mounted on a guide, the slide being connected to the motor or servomotor via a belt.
  • the belt is z. B. configured to transmit a rotary movement of the motor as a linear movement to the carriage and thus the pressure unit.
  • the belt is on the one hand fixedly connected to the carriage and on the other hand runs over a roller driven by the rotor of the motor.
  • the pressure unit is usually detachably connected to the slide, for example by one or more screw connections, but can also be made in one piece with it.
  • the use of a servo motor is particularly advantageous because its control mechanism enables exact travel paths and speeds. By changing its direction of rotation, a back and forth movement can be generated.
  • pressure unit or even just the pressure brush is detachably attached to the carriage, then these can be exchanged in order to use pressure brushes of different sizes or to replace pressure brushes which are worn, whereby the drive components can remain unchanged.
  • a linear motor can also be used to move the carriage.
  • the guide comprises two parallel, preferably cylindrical rods.
  • the carriage is mounted on the rods via corresponding recesses, for example bores, and can be pulled along them by the belt.
  • the rods can be arranged exactly one above the other in the vertical, but also diagonally offset. The use of two parallel rods ensures that the slide is supported and guided in a stable manner, so that it is protected against tilting.
  • the slide comprises two surfaces, each of which extends through a recess in a cover link.
  • the drive components can be enclosed.
  • the cover link that is to say the housing
  • two parallel surfaces which are oriented vertically and in their extension parallel to the direction of movement, are advantageous.
  • the recesses in the cover link can thus be as narrow as possible, their length being adapted to the required travel path.
  • the pressing unit is oriented in a basic position and at right angles to the product packaging during the linear movement.
  • the basic position of the pressing unit can be adjusted in order to adapt the pressing device to product packaging of different sizes.
  • the starting point of the linear movement in relation to the transport direction can be offset outwards or inwards within the limits of the maximum possible travel path.
  • the end point or reversal point is determined symmetrically to this.
  • the route can be adapted to the product packaging in such a way that it is minimal in any case, i.e. just as long as necessary. In this way, the time required for the pressing process is always kept to a minimum, which means a maximum throughput of product packaging.
  • a (servo) motor controller is preferably configured to control the linear movement of the pressing unit in such a way that it has a constant speed v during the pressing process. Since the product packaging is generally transported at a constant transport speed, it makes sense to move the pressure brush in a manner adapted to this, so that an additional disadvantageous relative movement is prevented. Accelerating and braking takes place accordingly before and after the pressing process. This ensures that the pressure brush always assumes the correct position in relation to the adhesive label. However, the control device and the motor would also be suitable for driving a variable speed pattern during the pressing process.
  • ā‡ is the angle which the linear movement of the pressure unit includes with the transport direction of the product packaging.
  • v is the speed of the pressing unit which is necessary to carry out the pressing movement and at the same time to follow the movement of the product packaging. In this way, the adhesive label can be pressed on evenly and completely.
  • the (servo) motor control is configured in such a way that the pressing unit is moved back from a rear end position directly into the basic position after the pressing process.
  • the pressure unit is therefore decelerated as quickly as possible and then accelerated directly to a return movement. There is therefore no standstill in the turning position.
  • There in the Reversing movement does not have to maintain constant speeds, it can be accelerated as quickly and for a long time as possible in order to then, possibly after a phase of constant travel, which is not absolutely necessary, to brake the pressure unit back to the basic position.
  • travel times can be kept to a minimum and the cycle performance, i.e. the product packaging processed per unit of time, can be kept to a maximum.
  • the transport unit comprises a head band for transporting the product packaging.
  • the headband is arranged in such a way that it comes into contact with the product packaging from above and moves it by means of frictional force over the sliding element of the pressing device.
  • materials can be selected that produce a particularly high static friction with the product packaging, such as rubber or rubber mixtures, whereas the sliding element should have the lowest possible coefficient of friction, as is the case, for example, with polished stainless steel or Teflon.
  • the transport unit is usually configured for continuous transport of the product packaging.
  • the product packaging labeled from above is fed via a belt body and transferred to the pressing device. If the transport speeds of the feeding tape body and the head tape of the pressing device are the same, the product packaging is transferred and transported within the pressing device as a continuous movement. For this purpose, the speed of the transport unit can be adjusted via a control device. In this way, the cycle performance of the pressing device can be synchronized with the other stations of the conveyor line and there is no need to provide a collection or delay area in front of the pressing device.
  • the pressing device has two pressing units which, in their respective basic position, are arranged on different sides of the pressing device in order to press one end of an adhesive label onto the underside of the product packaging.
  • An adhesive label that rests on the top of a product packaging and protrudes on both sides, over a right and a left side, can first be folded over by two folding elements at the respective ends in a substantially vertical orientation and then the ends from the left and from the right be pressed by means of the two pressure units on the underside of the product packaging.
  • the movement components of the two pressure units that are orthogonal to the transport direction are therefore directed in opposite directions, whereas the movement components along the transport direction are the same.
  • the pressing units are expediently arranged in such a way that the travel paths of their linear movements do not cross, which can be achieved, for example, by arranging the pressing units in such a way that their travel paths lie one after the other along the conveying direction. It is thus possible to guide an adhesive label from the top of a product packaging over two lateral surfaces to the bottom and to press it there, that is, to span a product packaging symmetrically. It is also possible to have two adhesive labels, which are spaced apart from one another on the upper side, for example, over a lateral surface each to the lower side. Both can increase the attractiveness of the goods on sale.
  • FIG. 1 shows a pressing device 1 here by way of example as part of a labeling machine 3.
  • the pressing device 1 comprises a sliding element 5 in the form of a sliding plate as a support for a product packaging 7 with an opening 9 which is sufficiently wide for a pressing unit 11 to have an adhesive label 13 on an underside 15 can press on the product packaging 7.
  • the sliding element 5 is mounted on spacer legs 16 and thus positioned at a desired height.
  • the pressing device 1 comprises a transport unit 17 which, for example, as shown here, moves the product packaging 7 along the transport direction T by means of two synchronously operated head belts 19.
  • a conveyor belt 21 transports the product packaging 7 to the pressing device 1 and a conveyor belt 23 takes over the further transport after the labeling.
  • a folding element 25 folds a protruding end 27 of the adhesive label 13 into an essentially vertical position, from which it is pressed against the underside 15 of the product packaging 7 by the pressing unit 11.
  • a cover link 29 that is to say a housing 29, drive components of the pressing device 1 are encapsulated.
  • the adhesive label 13 is applied from a carrier tape to the product packaging 7 by means of a stripping edge 31 of a label dispenser 33.
  • a product packaging 7 can be seen here in a first, right-hand position with the adhesive label 13 placed on top and in a second, further downstream position with the adhesive label 13 folded down and a third, further downstream position with the underside 15 of the product packaging 7 pressed Adhesive label 13.
  • the sliding element 5 can be seen with the recess 9 which is oriented obliquely to the transport direction T and within which the pressing unit 11 can move at least in sections.
  • the pressure unit 11 comprises an elongate pressure brush 35 or pressure roller (35) or a pressure squeegee (35) and a connecting piece 37 and is mounted on a slide 39.
  • the carriage 39 is slidably mounted on a guide 43.
  • the guide 43 is designed here in the form of two parallel, diagonally offset, cylindrical rods 45 which are fixed on a base plate 49 via two anchors 47.
  • the carriage 39 is firmly connected to a belt 53 via a connecting part 51.
  • the belt 53 is stretched around two rollers 55, one of which is driven by a motor, e.g. B. a servo motor 57 is driven.
  • the motor 57 is controlled by a controller 71, which is usually an electronic data processing unit.
  • a rotary movement R of the motor 57 and thus of the rollers 55 is transmitted as a linear movement L to the pressure unit 11.
  • the pressure unit 11 can execute the linear movement L from a basic position G to an end position E, the linear movement L being inclined at an angle ā‡ to the transport direction T, as shown here with the corresponding arrows.
  • FIG 3 shows a pressing device 1 which is suitable for pressing two opposite ends of an adhesive label 13 on.
  • two sliding elements 5 as well as the associated pressure units 11 and the drive components installed within a cover link 29 are arranged below the transport unit 17.
  • the recesses 9 in the sliding elements 5 and the recesses 61 in the cover link 29 are oriented to the transport direction T in such a way that first a left end of an adhesive label 13 and then its right end is pressed on.
  • the slide 39 and the pressing unit 11 are each shown here in their basic position G, that is to say the starting position before the pressing process.
  • the basic positions G are arranged adjacent to a first or left-hand side 73 as seen in the transport direction T and a second, right-hand side 75.
  • the folding element 25 is visible here for the left side 73, and a corresponding folding element is present on the opposite right side 75. Also shown is the label dispenser 33, in which a carrier film is guided over a stripping edge 31 in order to detach the adhesive labels 13 applied to it and to apply them to an upper side of a product packaging 7.
  • Figure 4a shows a product packaging 7, on the top side 67 of which an adhesive label 13 is applied by the label dispenser 33.
  • the adhesive label 13 is dimensioned such that a left and a right end 27, 69 protrude beyond the product packaging 7, the protruding ends 27, 69 being longer than the height of the product packaging 7.
  • the adhesive label 13 can also have only one protrusion, or two adhesive labels 13, each with one protrusion, can be applied.
  • Figure 4b shows the product packaging 7 Figure 4a after the two protruding ends 27, 69 of the adhesive label 13 have been folded over in a substantially vertical direction around an upper edge 68 of the product packaging 7 by folding elements 25 arranged on both sides.
  • Figure 4c shows the product packaging 7 of the two previous figures after the two ends 27, 69 of the adhesive label 13 have been pressed against the underside 15 of the product packaging 7 by means of a pressing unit 11.
  • the adhesive label 13 is thus folded over around the upper edge 68 and the lower edge 70 of the product packaging 7. Since the adhesive label 13 is firmly pressed against the top and bottom 67, 15 of the product packaging 7, it is also possible to label product packaging 7 which have a laterally protruding upper edge 68, so that the adhesive label 13 is only incomplete with a side surface 77 of the product packaging 7 is in contact.
  • the product packaging 7 is fed to a transport unit 17 by a conveyor belt 21 or a comparable device after an adhesive label 13 has already been applied to an upper side 67 of the product packaging 7, which label protrudes beyond the product packaging 7.
  • the transport unit 17 then transports the product packaging 7 further along a transport direction T during the following method steps.
  • a folding element 25 the protruding end 27, 69 of the adhesive label 13 is folded over around an upper edge 68 of the product packaging 7 and then extends in a substantially vertical direction.
  • the protruding end 27, 69 of the adhesive label 13 is pressed onto an underside 15 of the product packaging 7 by means of a pressing unit 11.
  • the pressure unit 11 is driven by a motor, for. B. a servomotor, 57 driven and moved in a linear movement L while the adhesive label 13 is pressed.
  • the linear movement L carried out by the pressing unit 11 takes place obliquely, preferably at an angle ā‡ of approximately -65 Ā° to -75 Ā°, to the transport direction T of the product packaging 7.
  • the transport unit 17 can transport the product packaging 7 by means of driver strips.
  • the guide 43, on which the slide 39 is slidably mounted can also comprise rectangular or polygonal rods instead of cylindrical rods 45, a single rod of which can then be sufficient to prevent the slide 39 from tilting.
  • the slide 39 can also comprise only a single surface 63, which is designed, for example, as part of a double-T shape, in order to ensure sufficient torsional rigidity. Accordingly, only one recess 61 through which the surface 63 extends would also be sufficient. It is also conceivable to arrange the components of the pressing device 1 vertically, that is to say rotated by 90 Ā° in relation to the embodiments described above, so that labels 13 can be pressed onto lateral surfaces of a product packaging 7 as described above.

Description

Die vorliegende Erfindung betrifft eine AndrĆ¼ckvorrichtung fĆ¼r eine Etikettiermaschine.The present invention relates to a pressing device for a labeling machine.

Lebensmittelprodukte werden hƤufig in eine tiefgezogene Kunststoffschale eingelegt oder portioniert und anschlieƟend die Schale mit einer Kunststofffolie mittels beispielsweise einer HeiƟsiegelnaht luftdicht verschlossen. Um dem Verbraucher Informationen zum Inhalt einer solchen Produktverpackung zur VerfĆ¼gung zu stellen, werden zusƤtzlich bedruckte Etiketten auf die Produktverpackung aufgebracht. Zunehmend beliebt sind band- oder streifenfƶrmige Etiketten, welche sich auch Ć¼ber SeitenflƤchen einer Produktverpackung erstrecken kƶnnen, die Produktverpackung also zumindest teilweise umspannen. Dabei ist es wichtig, dass die Etiketten gerade und faltenfrei aufgebracht und angedrĆ¼ckt werden, und dieses in einem mƶglichst raschen und kontinuierlichen Warenstrom einer Fertigungsstrecke erfolgt.Food products are often placed or portioned in a deep-drawn plastic tray and then the tray is sealed airtight with a plastic film by means of, for example, a heat-sealed seam. In order to provide the consumer with information on the content of such product packaging, additionally printed labels are applied to the product packaging. Tape-shaped or strip-shaped labels, which can also extend over the side surfaces of a product packaging, that is to say at least partially encircle the product packaging, are becoming increasingly popular. It is important that the labels are applied and pressed straight and without creases, and that this takes place in the fastest and most continuous flow of goods possible on a production line.

Aus der WO 2018 / 002242 A1 ist eine Etikettiervorrichtung bekannt bei welcher ein Etikett an der Unterseite einer Verpackungsschale mittels linearverschiebbarer AndrĆ¼ckelemente angedrĆ¼ckt wird. Aus der US 4059477A ist eine AndrĆ¼ckvorrichtung bekannt, welche ein Etikett an der Oberseite einer Verpackung mittels Linearbewegung eines Rollenelements andrĆ¼ckt. Aus der WO 2014 / 179 829 A1 ist eine weitere Vorrichtung zum Aufstreifen eines EtikettenĆ¼berstands an der Unterseite einer Verpackung bekannt.From the WO 2018/002242 A1 a labeling device is known in which a label is pressed onto the underside of a packaging tray by means of linearly displaceable pressure elements. From the US 4059477A a pressing device is known which presses a label on the top of a package by means of linear movement of a roller element. From the WO 2014/179 829 A1 Another device is known for slipping on a label protrusion on the underside of a package.

Aufgabe der vorliegenden Erfindung ist es, eine verbesserte AndrĆ¼ckvorrichtung zum AndrĆ¼cken eines Haftetiketts auf eine Produktverpackung bereitzustellen.The object of the present invention is to provide an improved pressing device for pressing an adhesive label onto a product packaging.

Diese Aufgabe wird gelƶst durch eine AndrĆ¼ckvorrichtung mit den Merkmalen des Anspruchs 1 bzw. durch ein Verfahren zum AndrĆ¼cken eines Endes eines Haftetiketts mit den Merkmalen des Anspruchs 13. Vorteilhafte Weiterbildungen der Erfindung sind in den UnteransprĆ¼chen angegeben.This object is achieved by a pressing device with the features of claim 1 or by a method for pressing one end of an adhesive label with the features of claim 13. Advantageous further developments of the invention are specified in the subclaims.

Eine erfindungsgemƤƟe AndrĆ¼ckvorrichtung fĆ¼r eine Etikettiermaschine zum AndrĆ¼cken eines Haftetiketts auf eine Produktverpackung umfasst ein Gleitelement als Auflage fĆ¼r eine Produktverpackung, eine Transporteinheit zum Transportieren einer Produktverpackung entlang einer Transportrichtung und ein Umfaltelement zum Umfalten eines auf eine Oberseite der Produktverpackung aufgebrachten und Ć¼ber diese Ć¼berstehenden Haftetiketts. Das Gleitelement kann eine Gleitplatte mit geringem Reibungskoeffizient sein, es kann jedoch auch Rollen oder aktiv angetriebene Riemen aufweisen, um damit den Transport der Produktverpackung durch die Transporteinheit zu unterstĆ¼tzen. StromaufwƤrts in der Fƶrderstrecke ist eine Vorrichtung als Teil der Etikettiermaschine vorhanden, welche dazu konfiguriert ist, das Haftetikett auf die Oberseite der Produktverpackung aufzubringen. Die AndrĆ¼ckvorrichtung weist desweiteren einen Motor, z. B. einen Servomotor, und eine von diesem angetriebene und im Betrieb der AndrĆ¼ckvorrichtung in einer Linearbewegung bewegte AndrĆ¼ckeinheit auf. Die AndrĆ¼ckeinheit ist dazu konfiguriert, mittels besagter Linearbewegung ein Ende des Haftetiketts auf eine Unterseite der Produktverpackung anzudrĆ¼cken. Die Produktverpackung erreicht also die AndrĆ¼ckvorrichtung mit dem im Wesentlichen waagerecht oben auf der Produktverpackung aufliegenden Etikett, dessen Ć¼berstehender Teil von dem Umfaltelement zunƤchst vorzugsweise im Wesentlichen senkrecht nach unten umgefaltet wird. Das Umfaltelement kann dabei eine gerade oder gebogene Umfaltleiste, ein gerader oder gebogener Umfaltstab oder eine Kombinationen mehrere solcher Komponenten in Form einer Umlenkkulisse sein. Die AndrĆ¼ckvorrichtung streift anschlieƟend das Ende des nach unten weisenden Haftetiketts auf die Unterseite der Produktverpackung an, wobei die Produktverpackung so auf dem entsprechend geformten Gleitelement aufliegt, dass wƤhrend ihrer Bewegung entlang der Transportrichtung immer gerade der Bereich ihrer Unterseite frei bleibt, an welchem das AndrĆ¼cken des Haftetiketts erfolgt. So kann sich ein, Ć¼blicherweise schmales, lƤngliches Etikett von einer Oberseite, entlang einer seitlichen Seite bis auf eine Unterseite einer Produktverpackung erstrecken und somit eine Produktverpackung umspannen. Mit entsprechender Gestaltung dient das Haftetikett einer ansprechenden und informativen ProduktprƤsentation. Das AndrĆ¼cken eines Endes des Haftetiketts auf die Unterseite der Produktverpackung kann mittels der hier beschriebenen AndrĆ¼ckvorrichtung wƤhrend des laufenden Transports der Produktverpackung erfolgen. Bevorzugt umfasst die AndrĆ¼ckeinheit eine AndrĆ¼ckbĆ¼rste oder eine AndrĆ¼ckrolle oder einen AndrĆ¼ckrakel. Die AndrĆ¼ckbĆ¼rste umfasst Ć¼blicherweise lƤngliche, entlang einer Linie mit geringer Breite angeordnete Borsten, welche senkrecht, aber auch geneigt nach oben weisen kƶnnen. Vorzugsweise entspricht die LƤnge der AndrĆ¼ckbĆ¼rste entlang der Transportrichtung der Produktverpackung mindestens der Breite des anzudrĆ¼ckenden Haftetiketts. Selbiges gilt fĆ¼r eine AndrĆ¼ckrolle oder einen AndrĆ¼ckrakel, wobei alle drei Komponenten auch kleiner oder groƟer als die Breite des Haftetiketts sein kƶnnen. Da eine relative Querbewegung zwischen AndrĆ¼ckeinheit und Produktverpackung aufgrund der beschriebenen Anordnung und Steuerung der AndrĆ¼ckeinheit eliminiert wird, wird ein VerreiƟen des Etiketts zuverlƤssig verhindert.A pressing device according to the invention for a labeling machine for pressing an adhesive label onto a product package comprises a sliding element as a support for a product package, a transport unit for transporting a product package along a transport direction and a folding element for folding over an adhesive label that is applied to an upper side of the product package and protrudes over it. The sliding element can be a sliding plate with a low coefficient of friction, but it can also have rollers or actively driven belts in order to transport the product packaging through the transport unit to support. Upstream of the conveyor line there is a device as part of the labeling machine which is configured to apply the adhesive label to the top of the product packaging. The pressing device further comprises a motor, e.g. B. a servomotor, and a pressure unit driven by this and moved in a linear movement during operation of the pressure device. The pressing unit is configured to press one end of the adhesive label onto an underside of the product packaging by means of said linear movement. The product packaging thus essentially reaches the pressing device with the label lying horizontally on top of the product packaging, the protruding part of which is initially folded over by the folding element, preferably essentially vertically downwards. The folding element can be a straight or curved folding strip, a straight or curved folding rod or a combination of several such components in the form of a deflection link. The pressing device then touches the end of the downward-facing adhesive label on the underside of the product packaging, the product packaging resting on the correspondingly shaped sliding element in such a way that during its movement along the direction of transport, the area of its underside remains free where the pressing of the Adhesive label takes place. Thus, a usually narrow, elongated label can extend from an upper side, along a lateral side to an underside of a product packaging and thus encompass a product packaging. With the appropriate design, the adhesive label serves for an appealing and informative product presentation. One end of the adhesive label can be pressed onto the underside of the product packaging by means of the pressing device described here while the product packaging is being transported. The pressure unit preferably comprises a pressure brush or a pressure roller or a pressure squeegee. The pressure brush usually comprises elongated bristles arranged along a line with a narrow width, which can point vertically, but also inclined upwards. The length of the pressure brush along the transport direction of the product packaging preferably corresponds to at least the width of the adhesive label to be pressed. The same applies to a pressure roller or a pressure squeegee, whereby all three components can also be smaller or larger than the width of the adhesive label. Since a relative transverse movement between the pressing unit and the product packaging is eliminated due to the described arrangement and control of the pressing unit, tearing of the label is reliably prevented.

Die AndrĆ¼ckeinheit ist erfindungsgemƤƟ so angeordnet, dass die von ihr ausgefĆ¼hrte Linearbewegung schrƤg, bevorzugt unter einem Winkel Ī± von ca. -65Ā° bis -75Ā°, zur Transportrichtung der Produktverpackung erfolgt. Eine derartige Bewegung summiert zwei Bewegungen, nƤmlich diejenige orthogonal zur Transportrichtung bzw. zur Bewegung der Produktverpackung, welche zum AnbĆ¼rsten des Haftetiketts dient, und diejenige Bewegung, welche der Produktverpackung entlang der Transportrichtung folgt. Somit kann das AnbĆ¼rsten des Haftetiketts wƤhrend der fortlaufenden Bewegung der Produktverpackung im kontinuierlichen Warenstrom erfolgen.According to the invention, the pressing unit is arranged in such a way that the linear movement carried out by it is inclined, preferably at an angle Ī± of approximately -65 Ā° to -75 Ā°, to the transport direction of the product packaging. Such a movement adds up two movements, namely that orthogonal to the transport direction or to the movement of the product packaging which is used to brush the adhesive label and the movement which follows the product packaging along the transport direction. This means that the adhesive label can be brushed on during the continuous movement of the product packaging in the continuous flow of goods.

In einer zweckmƤƟigen AusfĆ¼hrungsform ist die AndrĆ¼ckeinheit auf einem an einer FĆ¼hrung gelagerten Schlitten angeordnet, wobei der Schlitten Ć¼ber einen Riemen mit dem Motor bzw. Servomotor verbunden ist. Dabei ist der Riemen z. B. dazu konfiguriert, eine Drehbewegung des Motors als Linearbewegung auf den Schlitten und damit die AndrĆ¼ckeinheit zu Ć¼bertragen. Der Riemen ist einerseits ortsfest mit dem Schlitten verbunden und lƤuft andererseits Ć¼ber eine von dem Rotor des Motors angetriebene Rolle. Die AndrĆ¼ckeinheit ist Ć¼blicherweise lƶsbar mit dem Schlitten verbunden, zum Beispiel durch eine oder mehrere Schraubverbindungen, kann jedoch auch einstĆ¼ckig mit diesem gefertigt sein. Die Verwendung eines Servomotors ist besonders vorteilhaft, da durch seinen Steuerungsmechanismus exakte Fahrwege und Geschwindigkeiten mƶglich sind. Durch die Ƅnderung seiner Drehrichtung kann eine Hin- und eine RĆ¼ckfahrbewegung erzeugt werden. Sind die AndrĆ¼ckeinheit oder auch nur die AndrĆ¼ckbĆ¼rste lƶsbar an dem Schlitten angebracht, so kƶnnen diese ausgetauscht werden, um AndrĆ¼ckbĆ¼rsten unterschiedlicher GrĆ¶ĆŸe zu verwenden, oder um AndrĆ¼ckbĆ¼rsten, welche einen VerschleiƟ aufweisen, auszutauschen, wobei die Antriebskomponenten unverƤndert bleiben kƶnnen. Anstelle eines Rotationsmotors mit Riemenantrieb kann auch ein Linearmotor verwendet werden, um den Schlitten zu bewegen.In an expedient embodiment, the pressure unit is arranged on a slide mounted on a guide, the slide being connected to the motor or servomotor via a belt. The belt is z. B. configured to transmit a rotary movement of the motor as a linear movement to the carriage and thus the pressure unit. The belt is on the one hand fixedly connected to the carriage and on the other hand runs over a roller driven by the rotor of the motor. The pressure unit is usually detachably connected to the slide, for example by one or more screw connections, but can also be made in one piece with it. The use of a servo motor is particularly advantageous because its control mechanism enables exact travel paths and speeds. By changing its direction of rotation, a back and forth movement can be generated. If the pressure unit or even just the pressure brush is detachably attached to the carriage, then these can be exchanged in order to use pressure brushes of different sizes or to replace pressure brushes which are worn, whereby the drive components can remain unchanged. Instead of a belt-driven rotary motor, a linear motor can also be used to move the carriage.

Typischerweise umfasst die FĆ¼hrung zwei parallele, vorzugsweise zylindrische Stangen. Der Schlitten ist Ć¼ber entsprechende Ausnehmungen, zum Beispiel Bohrungen, auf den Stangen gelagert und kann entlang diese von dem Riemen gezogen werden. Die Stangen kƶnnen in der Vertikalen exakt Ć¼bereinander, aber auch diagonal versetzt angeordnet sein. Durch die Verwendung zweier paralleler Stangen ist eine stabile Lagerung und FĆ¼hrung des Schlittens gegeben, wodurch dieser stabil gegen ein Verkippen geschĆ¼tzt ist.Typically, the guide comprises two parallel, preferably cylindrical rods. The carriage is mounted on the rods via corresponding recesses, for example bores, and can be pulled along them by the belt. The rods can be arranged exactly one above the other in the vertical, but also diagonally offset. The use of two parallel rods ensures that the slide is supported and guided in a stable manner, so that it is protected against tilting.

Idealerweise umfasst der Schlitten zwei FlƤchen, die sich jeweils durch eine Aussparung einer Abdeckkulisse erstrecken. Um die Antriebskomponenten der AndrĆ¼ckeinheit vor Verschmutzung sowie einen Bediener an der Fƶrderstrecke vor bewegten Teilen zu schĆ¼tzen, kƶnnen die Antriebskomponenten eingehaust werden. Um die Bewegung des Schlittens aus der Abdeckkulisse, also dem GehƤuse, heraus zu fĆ¼hren, sind Schlitze oder Aussparungen in deren oberer Seite vorhanden. Um eine mƶglichst hohe Steifigkeit zu erreichen, sind zwei parallele FlƤchen, welche vertikal und in ihrer Ausdehnung parallel zur Bewegungsrichtung orientiert sind, vorteilhaft. So kƶnnen die Aussparungen in der Abdeckkulisse mƶglichst schmal sein, wobei ihre LƤnge dem benƶtigten Fahrweg angepasst ist.Ideally, the slide comprises two surfaces, each of which extends through a recess in a cover link. In order to protect the drive components of the pressure unit from contamination and an operator on the conveyor line from moving parts, the drive components can be enclosed. In order to guide the movement of the slide out of the cover link, that is to say the housing, there are slots or recesses in its upper side. In order to achieve the highest possible rigidity, two parallel surfaces, which are oriented vertically and in their extension parallel to the direction of movement, are advantageous. The recesses in the cover link can thus be as narrow as possible, their length being adapted to the required travel path.

In einer bevorzugten Variante ist die AndrĆ¼ckeinheit in einer Grundposition und wƤhrend der Linearbewegung rechtwinklig zur Produktverpackung orientiert. FĆ¼r die entsprechend angeordnete AndrĆ¼ckbĆ¼rste bedeutet dies, dass ihre lƤnglich angeordneten Borsten also im Wesentlichen entlang der Transportrichtung der Produktverpackung verlaufen und durch die dazu orthogonale Bewegung der AndrĆ¼ckeinheit wird das Haftetikett stets durch die gesamte LƤnge der AndrĆ¼ckbĆ¼rste aufgebĆ¼rstet. Somit ist gewƤhrleistet, dass alle Bereiche des Haftetiketts auf der Unterseite der Produktverpackung angedrĆ¼ckt werden.In a preferred variant, the pressing unit is oriented in a basic position and at right angles to the product packaging during the linear movement. For the appropriately arranged Pressure brush, this means that its elongated bristles run essentially along the direction of transport of the product packaging, and due to the orthogonal movement of the pressure unit, the adhesive label is always brushed on through the entire length of the pressure brush. This ensures that all areas of the adhesive label are pressed onto the underside of the product packaging.

In einer besonders vorteilhaften Variante ist die Grundposition der AndrĆ¼ckeinheit einstellbar, um die AndrĆ¼ckvorrichtung an Produktverpackungen verschiedener GrĆ¶ĆŸen anzupassen. So kann der Startpunkt der Linearbewegung in Relation zur Transportrichtung innerhalb der Grenzen des maximal mƶglichen Fahrwegs nach AuƟen oder nach Innen versetzt werden. Symmetrisch dazu wird der End- bzw. Umkehrpunkt festgelegt. So kann der Fahrweg an die Produktverpackungen so angepasst werden, dass er in jedem Fall minimal, also gerade so lang wie nƶtig ist. Damit wird die fĆ¼r den AndrĆ¼ckvorgang benƶtigte Zeit stets auf einem Minimum gehalten, was einen maximalen Durchsatz an Produktverpackungen bedeutet.In a particularly advantageous variant, the basic position of the pressing unit can be adjusted in order to adapt the pressing device to product packaging of different sizes. In this way, the starting point of the linear movement in relation to the transport direction can be offset outwards or inwards within the limits of the maximum possible travel path. The end point or reversal point is determined symmetrically to this. The route can be adapted to the product packaging in such a way that it is minimal in any case, i.e. just as long as necessary. In this way, the time required for the pressing process is always kept to a minimum, which means a maximum throughput of product packaging.

Vorzugsweise ist eine (Servo-)Motorsteuerung dazu konfiguriert, die Linearbewegung der AndrĆ¼ckeinheit so zu steuern, dass sie wƤhrend des AndrĆ¼ckvorgangs eine konstante Geschwindigkeit v aufweist. Da der Transport der Produktverpackungen in der Regel mit einer konstanten Transportgeschwindigkeit erfolgt, ist es sinnvoll, die AndrĆ¼ckbĆ¼rste daran angepasst zu bewegen, so dass eine zusƤtzliche unvorteilhafte Relativbewegung verhindert wird. Das Beschleunigen und Abbremsen erfolgt dementsprechend vor bzw. nach dem AndrĆ¼ckvorgang. So ist sichergestellt, dass die AndrĆ¼ckbĆ¼rste stets die korrekte Position mit Bezug zu dem Haftetikett einnimmt. Die Steuervorrichtung und der Motor wƤren jedoch auch dazu geeignet, ein variables Geschwindigkeitsmuster wƤhrend des AndrĆ¼ckvorgangs zu fahren.A (servo) motor controller is preferably configured to control the linear movement of the pressing unit in such a way that it has a constant speed v during the pressing process. Since the product packaging is generally transported at a constant transport speed, it makes sense to move the pressure brush in a manner adapted to this, so that an additional disadvantageous relative movement is prevented. Accelerating and braking takes place accordingly before and after the pressing process. This ensures that the pressure brush always assumes the correct position in relation to the adhesive label. However, the control device and the motor would also be suitable for driving a variable speed pattern during the pressing process.

ZweckmƤƟig ist die Geschwindigkeit v der AndrĆ¼ckeinheit zumindest wƤhrend eines Abschnitts des AndrĆ¼ckvorgangs gleich v = Transportgeschwindigkeit / Cosinus(a). Wie oben beschrieben, ist Ī± der Winkel, welchen die Linearbewegung der AndrĆ¼ckeinheit mit der Transportrichtung der Produktverpackung einschlieƟt. In AbhƤngigkeit des Winkels Ī± und der Transportgeschwindigkeit der Produktverpackung ist v also die Geschwindigkeit der AndrĆ¼ckeinheit, welche nƶtig ist, um die AndrĆ¼ckbewegung auszufĆ¼hren und gleichzeitig der Bewegung der Produktverpackung zu folgen. So kann das Haftetikett gleichmƤƟig und vollstƤndig angedrĆ¼ckt werden.The speed v of the pressing unit is expediently equal to v = transport speed / cosine (a), at least during a section of the pressing process. As described above, Ī± is the angle which the linear movement of the pressure unit includes with the transport direction of the product packaging. Depending on the angle Ī± and the transport speed of the product packaging, v is the speed of the pressing unit which is necessary to carry out the pressing movement and at the same time to follow the movement of the product packaging. In this way, the adhesive label can be pressed on evenly and completely.

In einer gƤngigen Variante ist die (Servo-)Motorsteuerung derart konfiguriert, dass die AndrĆ¼ckeinheit nach dem AndrĆ¼ckvorgang von einer hinteren Endlage direkt in die Grundposition zurĆ¼ck bewegt wird. Die AndrĆ¼ckeinheit wird also schnellstmƶglich verzƶgert und anschlieƟend direkt auf eine RĆ¼ckfahrbewegung beschleunigt. Es erfolgt somit kein Stillstand in der Wendelage. Da in der RĆ¼ckfahrbewegung keine konstanten Geschwindigkeiten eingehalten werden mĆ¼ssen, kann in dieser mƶglichst rasch und lange beschleunigt werden um anschlieƟend, evtl. nach einer Phase der Konstantfahrt, welche aber nicht zwingend ist, die AndrĆ¼ckeinheit wieder bis zur Grundposition abzubremsen. Dadurch kƶnnen die Fahrzeiten minimal und die Taktleistung, also die pro Zeiteinheit verarbeiteten Produktverpackungen, maximal gehalten werden.In a common variant, the (servo) motor control is configured in such a way that the pressing unit is moved back from a rear end position directly into the basic position after the pressing process. The pressure unit is therefore decelerated as quickly as possible and then accelerated directly to a return movement. There is therefore no standstill in the turning position. There in the Reversing movement does not have to maintain constant speeds, it can be accelerated as quickly and for a long time as possible in order to then, possibly after a phase of constant travel, which is not absolutely necessary, to brake the pressure unit back to the basic position. As a result, travel times can be kept to a minimum and the cycle performance, i.e. the product packaging processed per unit of time, can be kept to a maximum.

In einer weiteren Variante umfasst die Transporteinheit ein Kopfband zum Transportieren der Produktverpackung. Das Kopfband ist so angeordnet, dass es von oben mit der Produktverpackung in Kontakt kommt und diese mittels Reibungskraft Ć¼ber das Gleitelement der AndrĆ¼ckvorrichtung bewegt. FĆ¼r das Kopfband kƶnnen Materialien gewƤhlt werden, welche eine besonders hohe Haftreibung mit der Produktverpackung herstellen, wie zum Beispiel Gummi oder Gummimischungen, wohingegen das Gleitelement einen mƶglichst geringen Reibungskoeffizienten aufweisen sollte, wie dies zum Beispiel bei poliertem Edelstahl oder Teflon der Fall ist. Durch die Anordnung der Transporteinheit oberhalb der Produktverpackung kann so die Unterseite der Produktverpackung zum AndrĆ¼cken des Haftetiketts zugƤnglich bleiben.In a further variant, the transport unit comprises a head band for transporting the product packaging. The headband is arranged in such a way that it comes into contact with the product packaging from above and moves it by means of frictional force over the sliding element of the pressing device. For the headband, materials can be selected that produce a particularly high static friction with the product packaging, such as rubber or rubber mixtures, whereas the sliding element should have the lowest possible coefficient of friction, as is the case, for example, with polished stainless steel or Teflon. By arranging the transport unit above the product packaging, the underside of the product packaging can remain accessible for pressing on the adhesive label.

Ɯblicherweise ist die Transporteinheit fĆ¼r einen kontinuierlichen Transport der Produktverpackungen konfiguriert. Die von oben etikettierte Produktverpackung wird Ć¼ber einen Bandkƶrper zugefĆ¼hrt und an die AndrĆ¼ckvorrichtung Ć¼bergeben. Sind die Transportgeschwindigkeiten des zufĆ¼hrenden Bandkƶrpers und des Kopfbands der AndrĆ¼ckvorrichtung gleich, so erfolgt die Ɯbergabe der Produktverpackung und deren Transport innerhalb der AndrĆ¼ckvorrichtung als kontinuierliche Bewegung. Dazu ist die Geschwindigkeit der Transporteinheit Ć¼ber eine Steuervorrichtung einstellbar. So kann die Taktleistung der AndrĆ¼ckvorrichtung mit den Ć¼brigen Stationen der Fƶrderstrecke synchronisiert werden und es muss kein Sammel- bzw. Verzƶgerungsbereich vor der AndrĆ¼ckvorrichtung vorgesehen werden.The transport unit is usually configured for continuous transport of the product packaging. The product packaging labeled from above is fed via a belt body and transferred to the pressing device. If the transport speeds of the feeding tape body and the head tape of the pressing device are the same, the product packaging is transferred and transported within the pressing device as a continuous movement. For this purpose, the speed of the transport unit can be adjusted via a control device. In this way, the cycle performance of the pressing device can be synchronized with the other stations of the conveyor line and there is no need to provide a collection or delay area in front of the pressing device.

In einer weiteren Variante weist die AndrĆ¼ckvorrichtung zwei AndrĆ¼ckeinheiten auf, welche in ihrer jeweiligen Grundposition an unterschiedlichen Seiten der AndrĆ¼ckvorrichtung angeordnet sind, um jeweils ein Ende eines Haftetiketts an der Unterseite der Produktverpackung anzudrĆ¼cken. So kann ein Haftetikett, welches auf der Oberseite einer Produktverpackung aufliegt und beidseitig, Ć¼ber eine rechte und eine linke Seite, Ć¼bersteht, zunƤchst durch zwei Umfaltelemente an den jeweiligen Enden in eine im Wesentlichen vertikale Orientierung umgefaltet werden und anschlieƟend die Enden von links und von rechts mittels der beiden AndrĆ¼ckeinheiten auf der Unterseite der Produktverpackung angedrĆ¼ckt werden. Die zur Transportrichtung orthogonalen Bewegungskomponenten der beiden AndrĆ¼ckeinheiten sind also entgegengerichtet, wohingegen die Bewegungskomponenten entlang der Transportrichtung gleich sind.In a further variant, the pressing device has two pressing units which, in their respective basic position, are arranged on different sides of the pressing device in order to press one end of an adhesive label onto the underside of the product packaging. An adhesive label that rests on the top of a product packaging and protrudes on both sides, over a right and a left side, can first be folded over by two folding elements at the respective ends in a substantially vertical orientation and then the ends from the left and from the right be pressed by means of the two pressure units on the underside of the product packaging. The movement components of the two pressure units that are orthogonal to the transport direction are therefore directed in opposite directions, whereas the movement components along the transport direction are the same.

ZweckmƤƟig sind die AndrĆ¼ckeinheiten so angeordnet, dass sich die Fahrwege ihrer Linearbewegungen nicht kreuzen, was zum Beispiel dadurch realisiert werden kann, dass die AndrĆ¼ckeinheiten so angeordnet werden, dass ihre Fahrwege entlang der Fƶrderrichtung nacheinander liegen. So ist es mƶglich, ein Haftetikett von der Oberseite einer Produktverpackung Ć¼ber zwei seitliche FlƤchen zur Unterseite zu fĆ¼hren und dort anzudrĆ¼cken, also eine Produktverpackung symmetrisch zu umspannen. Ebenso ist es mƶglich zwei Haftetiketten, welche zum Beispiel auf der Oberseite voneinander beabstandet sind, Ć¼ber jeweils eine seitliche FlƤche bis zur Unterseite laufen zu lassen. Beides kann die AttraktivitƤt der im Verkauf befindlichen Ware erhƶhen.The pressing units are expediently arranged in such a way that the travel paths of their linear movements do not cross, which can be achieved, for example, by arranging the pressing units in such a way that their travel paths lie one after the other along the conveying direction. It is thus possible to guide an adhesive label from the top of a product packaging over two lateral surfaces to the bottom and to press it there, that is, to span a product packaging symmetrically. It is also possible to have two adhesive labels, which are spaced apart from one another on the upper side, for example, over a lateral surface each to the lower side. Both can increase the attractiveness of the goods on sale.

Im Folgenden werden AusfĆ¼hrungsbeispiele der Erfindung anhand der Figuren nƤher beschrieben. Dabei zeigen

Figur 1:
eine perspektivische Ansicht einer AndrĆ¼ckvorrichtung als Teil einer Etikettiermaschine,
Figur 2:
Komponenten einer AndrĆ¼ckvorrichtung,
Figur 3:
eine AndrĆ¼ckvorrichtung welche geeignet ist, zwei gegenĆ¼berliegende Enden eines Haftetiketts anzudrĆ¼cken,
Figur 4a,b,c:
eine Produktverpackung mit einem Haftetikett, zu verschiedenen Zeitpunkten beim Durchlauf einer AndrĆ¼ckvorrichtung.
In the following, exemplary embodiments of the invention are described in more detail with reference to the figures. Show it
Figure 1:
a perspective view of a pressing device as part of a labeling machine,
Figure 2:
Components of a pressing device,
Figure 3:
a pressing device which is suitable for pressing two opposite ends of an adhesive label,
Figure 4a, b, c:
a product packaging with an adhesive label, at different times when passing through a pressure device.

Einander entsprechende Komponenten sind in den Figuren jeweils mit gleichen Bezugszeichen versehen.Components that correspond to one another are provided with the same reference numerals in the figures.

Figur 1 zeigt eine AndrĆ¼ckvorrichtung 1 hier beispielhaft als Teil einer Etikettiermaschine 3. Die AndrĆ¼ckvorrichtung 1 umfasst ein Gleitelement 5 in Form einer Gleitplatte als Auflage fĆ¼r eine Produktverpackung 7 mit einer Auslassung 9, welche ausreichend breit ist, damit eine AndrĆ¼ckeinheit 11 ein Haftetikett 13 an einer Unterseite 15 der Produktverpackung 7 andrĆ¼cken kann. Das Gleitelement 5 ist auf Distanzbeinen 16 gelagert und so auf einer gewĆ¼nschten Hƶhe positioniert. Die AndrĆ¼ckvorrichtung 1 umfasst eine Transporteinheit 17, welche beispielsweise, wie hier gezeigt, mittels zweier synchron betriebener KopfbƤnder 19 die Produktverpackung 7 entlang der Transportrichtung T bewegt. Ein Zufƶrderband 21 transportiert die Produktverpackung 7 zur AndrĆ¼ckvorrichtung 1 und ein Abfƶrderband 23 Ć¼bernimmt den Weitertransport nach erfolgter Etikettierung. Ein Umfaltelement 25 faltet ein Ć¼berstehendes Ende 27 des Haftetiketts 13 in eine im Wesentlichen vertikale Position, von der es durch die AndrĆ¼ckeinheit 11 an die Unterseite 15 der Produktverpackung 7 angedrĆ¼ckt wird. Innerhalb einer Abdeckkulisse 29, also einem GehƤuse 29, sind Antriebskomponenten der AndrĆ¼ckvorrichtung 1 gekapselt. In dieser Darstellung sind neben den Zu- und AbfƶrderbƤndern 21, 23 weitere Teile der Etikettiermaschine 3 zu erkennen. So wird mittels einer Abstreifkante 31 eines Etikettenspenders 33 das Haftetikett 13 von einem TrƤgerband auf die Produktverpackung 7 aufgebracht. Zu sehen ist hier eine Produktverpackung 7 in einer ersten, rechten Position mit oben aufgelegtem Haftetikett 13 sowie in einer zweiten, weiter stromabwƤrts gelegenen Position mit nach unten geklapptem Haftetikett 13 und einer dritten, weiter stromabwƤrts gelegenen Position mit an der Unterseite 15 der Produktverpackung 7 angedrĆ¼cktem Haftetikett 13. Figure 1 shows a pressing device 1 here by way of example as part of a labeling machine 3. The pressing device 1 comprises a sliding element 5 in the form of a sliding plate as a support for a product packaging 7 with an opening 9 which is sufficiently wide for a pressing unit 11 to have an adhesive label 13 on an underside 15 can press on the product packaging 7. The sliding element 5 is mounted on spacer legs 16 and thus positioned at a desired height. The pressing device 1 comprises a transport unit 17 which, for example, as shown here, moves the product packaging 7 along the transport direction T by means of two synchronously operated head belts 19. A conveyor belt 21 transports the product packaging 7 to the pressing device 1 and a conveyor belt 23 takes over the further transport after the labeling. A folding element 25 folds a protruding end 27 of the adhesive label 13 into an essentially vertical position, from which it is pressed against the underside 15 of the product packaging 7 by the pressing unit 11. Within a cover link 29, that is to say a housing 29, drive components of the pressing device 1 are encapsulated. In this illustration, in addition to the infeed and outfeed belts 21, 23, further parts of the labeling machine 3 can be seen. Thus, the adhesive label 13 is applied from a carrier tape to the product packaging 7 by means of a stripping edge 31 of a label dispenser 33. A product packaging 7 can be seen here in a first, right-hand position with the adhesive label 13 placed on top and in a second, further downstream position with the adhesive label 13 folded down and a third, further downstream position with the underside 15 of the product packaging 7 pressed Adhesive label 13.

In Figur 2 sind Komponenten der AndrĆ¼ckvorrichtung 1 dargestellt, wobei die Abdeckkulisse 29 gestrichelt angedeutet ist. Es ist das Gleitelement 5 mit der schrƤg zur Transportrichtung T orientierten Auslassung 9, innerhalb der sich die AndrĆ¼ckeinheit 11 zumindest abschnittsweise bewegen kann, zu erkennen. Die AndrĆ¼ckeinheit 11 umfasst eine lƤngliche AndrĆ¼ckbĆ¼rste 35 oder AndrĆ¼ckrolle (35) oder einen AndrĆ¼ckrakel (35) sowie ein VerbindungsstĆ¼ck 37 und ist auf einem Schlitten 39 montiert. Der Schlitten 39 ist auf einer FĆ¼hrung 43 verschiebbar gelagert. Die FĆ¼hrung 43 ist hier in Form zweier paralleler, diagonal versetzter, zylindrischer Stangen 45, die Ć¼ber zwei Verankerungen 47 auf einer Bodenplatte 49 fixiert sind, ausgebildet. Der Schlitten 39 ist Ć¼ber ein Verbindungsteil 51 fest mit einem Riemen 53 verbunden. Der Riemen 53 ist um zwei Rollen 55 gespannt, von denen eine durch einen Motor, z. B. einen Servomotor, 57 angetrieben ist. Der Motor 57 wird durch eine Steuerung 71, welche Ć¼blicherweise eine elektronische Datenverarbeitungseinheit ist, gesteuert. Durch die dargestellte Anordnung der Antriebskomponenten wird eine Drehbewegung R des Motors 57 und damit der Rollen 55 als Linearbewegung L auf die AndrĆ¼ckeinheit 11 Ć¼bertragen. In einer Oberseite 59 der Abdeckkulisse 29 sind zwei Aussparungen 61 vorhanden, durch die sich zwei FlƤchen 63 des Schlittens 39 erstrecken und innerhalb der eine Linearbewegung L des Schlittens 39 mƶglich ist. Entsprechend der baulichen Gegebenheiten kann die AndrĆ¼ckeinheit 11 die Linearbewegung L von einer Grundposition G zu einer Endlage E ausfĆ¼hren, wobei die Linearbewegung L unter einem Winkel Ī± zur Transportrichtung T geneigt ist, wie hier mit den entsprechenden Pfeilen dargestellt.In Figure 2 components of the pressing device 1 are shown, the cover link 29 being indicated by dashed lines. The sliding element 5 can be seen with the recess 9 which is oriented obliquely to the transport direction T and within which the pressing unit 11 can move at least in sections. The pressure unit 11 comprises an elongate pressure brush 35 or pressure roller (35) or a pressure squeegee (35) and a connecting piece 37 and is mounted on a slide 39. The carriage 39 is slidably mounted on a guide 43. The guide 43 is designed here in the form of two parallel, diagonally offset, cylindrical rods 45 which are fixed on a base plate 49 via two anchors 47. The carriage 39 is firmly connected to a belt 53 via a connecting part 51. The belt 53 is stretched around two rollers 55, one of which is driven by a motor, e.g. B. a servo motor 57 is driven. The motor 57 is controlled by a controller 71, which is usually an electronic data processing unit. As a result of the illustrated arrangement of the drive components, a rotary movement R of the motor 57 and thus of the rollers 55 is transmitted as a linear movement L to the pressure unit 11. In an upper side 59 of the cover link 29 there are two recesses 61 through which two surfaces 63 of the slide 39 extend and within which a linear movement L of the slide 39 is possible. Depending on the structural conditions, the pressure unit 11 can execute the linear movement L from a basic position G to an end position E, the linear movement L being inclined at an angle Ī± to the transport direction T, as shown here with the corresponding arrows.

Figur 3 zeigt eine AndrĆ¼ckvorrichtung 1, welche geeignet ist, zwei gegenĆ¼berliegende Enden eines Haftetiketts 13 anzudrĆ¼cken. Dazu sind unterhalb der Transporteinheit 17 zwei Gleitelemente 5 sowie die zugehƶrigen AndrĆ¼ckeinheiten 11 und die innerhalb jeweils einer Abdeckkulisse 29 verbauten Antriebskomponenten angeordnet. Die Aussparungen 9 in den Gleitelementen 5 und die Aussparungen 61 in den Abdeckkulissen 29 sind so zur Transportrichtung T orientiert, dass erst ein linkes Ende eines Haftetiketts 13 und dann dessen rechtes Ende angedrĆ¼ckt wird. Der Schlitten 39 und die AndrĆ¼ckeinheit 11 sind hier jeweils in ihrer Grundposition G, also der Ausgangslage vor dem AndrĆ¼ckvorgang, gezeigt. Die Grundpositionen G sind dabei benachbart einer ersten, bzw. in Transportrichtung T gesehen linken Seite 73, sowie einer zweiten, rechten Seite 75, angeordnet. Das Umfaltelement 25 ist hier fĆ¼r die linke Seite 73 sichtbar, und ein entsprechendes Umfaltelement ist auf der gegenĆ¼berliegenden rechten Seite 75 vorhanden. Dargestellt ist auch der Etikettenspender 33, bei welchem eine TrƤgerfolie Ć¼ber eine Abstreifkante 31 gefĆ¼hrt wird, um die auf ihr aufgebrachten Haftetiketten 13 zu lƶsen und auf eine Oberseite einer Produktverpackung 7 aufzubringen. Figure 3 shows a pressing device 1 which is suitable for pressing two opposite ends of an adhesive label 13 on. For this purpose, two sliding elements 5 as well as the associated pressure units 11 and the drive components installed within a cover link 29 are arranged below the transport unit 17. The recesses 9 in the sliding elements 5 and the recesses 61 in the cover link 29 are oriented to the transport direction T in such a way that first a left end of an adhesive label 13 and then its right end is pressed on. The The slide 39 and the pressing unit 11 are each shown here in their basic position G, that is to say the starting position before the pressing process. The basic positions G are arranged adjacent to a first or left-hand side 73 as seen in the transport direction T and a second, right-hand side 75. The folding element 25 is visible here for the left side 73, and a corresponding folding element is present on the opposite right side 75. Also shown is the label dispenser 33, in which a carrier film is guided over a stripping edge 31 in order to detach the adhesive labels 13 applied to it and to apply them to an upper side of a product packaging 7.

Figur 4a zeigt eine Produktverpackung 7, auf deren Oberseite 67 durch den Etikettenspender 33 ein Haftetikett 13 aufgebracht ist. In diesem Beispiel ist das Haftetikett 13 derart dimensioniert, dass ein linkes und ein rechtes Ende 27, 69 Ć¼ber die Produktverpackung 7 Ć¼berstehen, wobei die Ć¼berstehenden Enden 27, 69 lƤnger als die Hƶhe der Produktverpackung 7 sind. Alternativ kann das Haftetikett 13 auch nur einen Ɯberstand aufweisen, oder es kƶnnen zwei Haftetiketten 13 mit jeweils einem Ɯberstand aufgebracht werden. Figure 4a shows a product packaging 7, on the top side 67 of which an adhesive label 13 is applied by the label dispenser 33. In this example, the adhesive label 13 is dimensioned such that a left and a right end 27, 69 protrude beyond the product packaging 7, the protruding ends 27, 69 being longer than the height of the product packaging 7. Alternatively, the adhesive label 13 can also have only one protrusion, or two adhesive labels 13, each with one protrusion, can be applied.

Figur 4b zeigt die Produktverpackung 7 aus Figur 4a, nachdem die beiden Ć¼berstehenden Enden 27, 69 des Haftetiketts 13 durch beidseitig angeordnete Umfaltelemente 25 in eine im Wesentlichen vertikale Richtung um eine obere Kante 68 der Produktverpackung 7 umgeklappt wurden. Figure 4b shows the product packaging 7 Figure 4a after the two protruding ends 27, 69 of the adhesive label 13 have been folded over in a substantially vertical direction around an upper edge 68 of the product packaging 7 by folding elements 25 arranged on both sides.

Figur 4c zeigt die Produktverpackung 7 der beiden vorangegangenen Figuren, nachdem die beiden Enden 27, 69 des Haftetiketts 13 mittels einer AndrĆ¼ckeinheit 11 an die Unterseite 15 der Produktverpackung 7 angedrĆ¼ckt wurden. Das Haftetikett 13 ist somit um die obere Kante 68 und die untere Kante 70 der Produktverpackung 7 umgefaltet. Da das Haftetikett 13 stabil an Ober- und Unterseite 67, 15 der Produktverpackung 7 angedrĆ¼ckt ist, ist es auch mƶglich Produktverpackungen 7 zu etikettieren, welche eine seitlich Ć¼berstehende obere Kante 68 aufweisen, so dass das Haftetikett 13 nur unvollstƤndig mit einer SeitenflƤche 77 der Produktverpackung 7 in Kontakt ist. Figure 4c shows the product packaging 7 of the two previous figures after the two ends 27, 69 of the adhesive label 13 have been pressed against the underside 15 of the product packaging 7 by means of a pressing unit 11. The adhesive label 13 is thus folded over around the upper edge 68 and the lower edge 70 of the product packaging 7. Since the adhesive label 13 is firmly pressed against the top and bottom 67, 15 of the product packaging 7, it is also possible to label product packaging 7 which have a laterally protruding upper edge 68, so that the adhesive label 13 is only incomplete with a side surface 77 of the product packaging 7 is in contact.

Im Folgenden werden die Verfahrensschritte zum AndrĆ¼cken eines Endes 27, 69 eines Haftetiketts 13 auf eine Unterseite 15 einer Produktverpackung 7 erlƤutert:
ErfindungsgemƤƟ wird die Produktverpackung 7 durch ein Zufƶrderband 21 oder eine vergleichbare Vorrichtung einer Transporteinheit 17 zugefĆ¼hrt, nachdem bereits auf einer Oberseite 67 der Produktverpackung 7 ein Haftetikett 13 aufgebracht wurde, welches Ć¼ber die Produktverpackung 7 Ć¼bersteht. Die Transporteinheit 17 transportiert die Produktverpackung 7 sodann entlang einer Transportrichtung T wƤhrend der folgenden Verfahrensschritte weiter. Durch ein Umfaltelement 25 wird das Ć¼berstehende Ende 27, 69 des Haftetiketts 13 um eine obere Kante 68 der Produktverpackung 7 umgefaltet und erstreckt sich sodann in einer im Wesentlichen vertikalen Richtung. Daran anschlieƟend wird das Ć¼berstehende Ende 27, 69 des Haftetiketts 13 auf einer Unterseite 15 der Produktverpackung 7 mittels einer AndrĆ¼ckeinheit 11 angedrĆ¼ckt. Die AndrĆ¼ckeinheit 11 wird dabei von einem Motor, z. B. einem Servomotor, 57 angetrieben und wƤhrend des AndrĆ¼ckens des Haftetiketts 13 in einer Linearbewegung L bewegt.In the following, the method steps for pressing an end 27, 69 of an adhesive label 13 onto an underside 15 of a product packaging 7 are explained:
According to the invention, the product packaging 7 is fed to a transport unit 17 by a conveyor belt 21 or a comparable device after an adhesive label 13 has already been applied to an upper side 67 of the product packaging 7, which label protrudes beyond the product packaging 7. The transport unit 17 then transports the product packaging 7 further along a transport direction T during the following method steps. Through a folding element 25, the protruding end 27, 69 of the adhesive label 13 is folded over around an upper edge 68 of the product packaging 7 and then extends in a substantially vertical direction. Subsequently, the protruding end 27, 69 of the adhesive label 13 is pressed onto an underside 15 of the product packaging 7 by means of a pressing unit 11. The pressure unit 11 is driven by a motor, for. B. a servomotor, 57 driven and moved in a linear movement L while the adhesive label 13 is pressed.

Die von der AndrĆ¼ckeinheit 11 ausgefĆ¼hrte Linearbewegung L erfolgt schrƤg, bevorzugt unter einem Winkel Ī± von ca. -65Ā° bis -75Ā°, zur Transportrichtung T der Produktverpackung 7.The linear movement L carried out by the pressing unit 11 takes place obliquely, preferably at an angle Ī± of approximately -65 Ā° to -75 Ā°, to the transport direction T of the product packaging 7.

Desweiteren ist es zweckmƤƟig, dass die von der AndrĆ¼ckeinheit 11 ausgefĆ¼hrte Linearbewegung L mit einer Geschwindigkeit v = Transportgeschwindigkeit / Cosinus(a) wƤhrend des AndrĆ¼ckvorgangs erfolgt.Furthermore, it is expedient that the linear movement L carried out by the pressing unit 11 takes place at a speed v = transport speed / cosine (a) during the pressing process.

Ausgehend von den oben dargestellten AusfĆ¼hrungsformen einer AndrĆ¼ckvorrichtung 1 sind vielerlei Variationen derselben mƶglich. So kann beispielsweise die Transporteinheit 17 anstatt eines Kopfbands 19 die Produktverpackungen 7 durch Mitnehmerleisten transportieren. Die FĆ¼hrung 43, auf welcher der Schlitten 39 verschiebbar gelagert ist, kann anstatt zylindrischer Stangen 45 auch recht- oder vieleckige Stangen umfassen, wovon dann auch eine einzelne ausreichend sein kann, um ein Kippen des Schlittens 39 zu verhindern. Der Schlitten 39 kann auch nur eine einzelne FlƤche 63 umfassen, welche zum Beispiel als Teil einer Doppel-T-Form ausgebildet ist, um eine ausreichende Verwindungssteifigkeit zu gewƤhrleisten. Demzufolge wƤre auch nur eine Aussparung 61, durch welche sich die FlƤche 63 erstreckt, ausreichend. AuƟerdem ist es denkbar, die Komponenten der AndrĆ¼ckvorrichtung 1 vertikal, das heiƟt zu den oben beschriebenen AusfĆ¼hrungsformen um 90Ā° gedreht anzuordnen, so dass Etiketten 13 an seitlichen FlƤchen einer Produktverpackung 7 gemƤƟ der vorstehenden Beschreibung angedrĆ¼ckt werden kƶnnen.Based on the embodiments of a pressing device 1 shown above, many variations of the same are possible. For example, instead of a headband 19, the transport unit 17 can transport the product packaging 7 by means of driver strips. The guide 43, on which the slide 39 is slidably mounted, can also comprise rectangular or polygonal rods instead of cylindrical rods 45, a single rod of which can then be sufficient to prevent the slide 39 from tilting. The slide 39 can also comprise only a single surface 63, which is designed, for example, as part of a double-T shape, in order to ensure sufficient torsional rigidity. Accordingly, only one recess 61 through which the surface 63 extends would also be sufficient. It is also conceivable to arrange the components of the pressing device 1 vertically, that is to say rotated by 90 Ā° in relation to the embodiments described above, so that labels 13 can be pressed onto lateral surfaces of a product packaging 7 as described above.

Claims (15)

  1. A press-on device (1) for a labeling machine (3), used for pressing an adhesive label (13) onto a product package (7), wherein the press-on device (1) comprises a slide element (5) as a support for a product package (7), a conveying unit (17) for conveying a product package (7) along a conveying direction (T), and a folding element (25) for folding an adhesive label (13) applied to an upper surface (67) of the product package (7) and projecting therebeyond, characterized in that the press-on device (1) additionally comprises a motor (57) and a press-on unit (11) driven by the latter and moved in a linear movement (L) during operation of the press-on device (1), the press-on unit (11) being configured to press an end (27, 69) of the adhesive label (13) onto a lower surface (15) of the product package (7) by means of said linear movement (L), wherein the press-on unit (11) is arranged such that the linear movement (L) executed thereby takes place at an oblique angle relative to the conveying direction (T) of the product package (7).
  2. The press-on device according to claim 1, characterized in that the press-on unit (11) comprises a press-on brush (35) or a press-on roller (35) or a press-on blade (35).
  3. The press-on device according to one of the preceding claims, characterized in that the press-on unit (11) is arranged such that the linear movement (L) executed thereby takes place at an angle Ī± of approx. -65Ā° to -75Ā° relative to the conveying direction (T) of the product package (7).
  4. The press-on device according to one of the preceding claims, characterized in that the press-on unit (11) is arranged on a carriage (39) supported on a guide (43), the carriage (39) being connected to the motor (57) via a belt (53), and the belt (53) being configured to transmit a rotary movement (R) of the motor (57) as a linear movement (L) to the carriage (39).
  5. The press-on device according to claim 4, characterized in that the guide (43) comprises two parallel, preferably cylindrical rods (45).
  6. The press-on device according to one of the preceding claims, characterized in that, at a home position (G) and during the linear movement (L), the press-on unit (11) is oriented at right angles to the product package (7).
  7. The press-on device according to one of the preceding claims, characterized in that the home position (G) of the press-on unit (11) is adjustable for adapting the press-on device (1) to product packages (7) of various sizes.
  8. The press-on device according to one of the preceding claims, characterized in that a controller (71) of the motor (57), which is configured as a servo motor, is configured for controlling the linear movement (L) of the press-on unit (11) such that it has a constant speed during the press-on process.
  9. The press-on device according to one of the preceding claims, characterized in that, at least during part of the press-on process, the speed (v) of the press-on unit (11) is v = conveying speed / cosine(Ī±), wherein Ī± is the angle between the linear movement (L) of the press-on unit (11) and the conveying direction (T) of the product package (7).
  10. The press-on device according to one of the preceding claims, characterized in that the controller (71) is configured such that, after a press-on process, the press-on unit (11) is moved from a rear end position (E) directly back to the home position (G).
  11. The press-on device according to one of the preceding claims, characterized in that the conveying unit (17) is configured for conveying the product packages (7) continuously.
  12. The press-on device according to one of the preceding claims, characterized in that it comprises two press-on units (11), which, at their respective home position (G), are arranged on different sides (73, 75) of the press-on device (1), so as to press a respective end (27, 69) of an adhesive label (13) onto the lower surface (15) of the product package (7).
  13. A method for pressing an end (27, 69) of an adhesive label (13) onto a lower surface (15) of a product package (7), characterized by the following method steps:
    conveying a product package (7) along a conveying direction (T) by means of a conveying unit (17), the upper surface (67) of the product package (7) having applied thereto an adhesive label (13) that projects therebeyond;
    folding the adhesive label (13) around an upper edge (68) of the product package (7) by means of a folding element (25);
    pressing an end (27, 69) of the adhesive label (13) onto a lower surface (15) of the product package (7) by means of a press-on unit (11), which is driven by a motor (57) and moved in a linear movement (L) while the adhesive label (13) is being pressed on, wherein the linear movement (L) executed by the press-on unit (11) takes place at an oblique angle relative to the conveying direction (T) of the product package (7).
  14. The method according to claim 13, characterized in that the linear movement (L) executed by the press-on unit (11) takes place at an angle Ī± of approx. -65Ā° to -75Ā° relative to the conveying direction (T) of the product package (7).
  15. The method according to claim 14, characterized in that the linear movement (L), which is executed by the press-on unit (11), is carried out at a speed v = conveying speed / cosine(Ī±) during the press-on process.
EP19162447.7A 2018-03-16 2019-03-13 Pressing device with motor Active EP3549880B1 (en)

Applications Claiming Priority (1)

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DE102018204037.0A DE102018204037A1 (en) 2018-03-16 2018-03-16 Pressing device with motor

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EP3549880B1 true EP3549880B1 (en) 2021-05-05

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US (1) US11247800B2 (en)
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CN (1) CN210126703U (en)
DE (1) DE102018204037A1 (en)
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CN115973548A (en) * 2022-07-29 2023-04-18 äøŠęµ·ę„č“ŗč‡ŖåŠØåŒ–č®¾å¤‡ęœ‰é™å…¬åø Labeling method based on annular labeling machine
CN115973547A (en) * 2022-07-29 2023-04-18 äøŠęµ·ę„č“ŗč‡ŖåŠØåŒ–č®¾å¤‡ęœ‰é™å…¬åø Multifunctional annular labeling machine

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Publication number Priority date Publication date Assignee Title
US1239858A (en) * 1916-10-04 1917-09-11 Economic Machinery Co Wiper mechanism for labeling-machines.
US2217325A (en) * 1938-03-26 1940-10-08 New Jersey Machine Corp Machine for applying labels and the like
US4059477A (en) * 1976-05-26 1977-11-22 Labelette Company Box end labeling apparatus
US4349405A (en) * 1978-06-29 1982-09-14 Winfried Dudzik Automatic labeling apparatus
US6155322A (en) * 1998-08-17 2000-12-05 Inline Plastics Corp. Label applying apparatus and method therefor
WO2007013357A1 (en) * 2005-07-29 2007-02-01 Kabushiki Kaisha Sato Rfid label attaching method, rfid label attaching device, and rfid label
DE102009039000A1 (en) * 2009-08-28 2011-03-10 Espera-Werke Gmbh Device for two- or multi-sided labeling
WO2014179829A1 (en) * 2013-05-06 2014-11-13 Tronics Pty Ltd Apparatus for printing and applying label to product
GB201405120D0 (en) * 2014-03-21 2014-05-07 Plf Uk Ltd Labelling machine and labelling methods
ES2624494T3 (en) * 2014-08-13 2017-07-14 Multivac Marking & Inspection Gmbh & Co. Kg Labeling device with a sealing label compression device
EP3006359B1 (en) * 2014-10-06 2017-03-22 MULTIVAC Marking & Inspection GmbH & Co. KG Labelling of folded products
WO2018002242A1 (en) * 2016-06-29 2018-01-04 Marel Ltd A labelling apparatus

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DE102018204037A1 (en) 2019-09-19
US11247800B2 (en) 2022-02-15
EP3549880A1 (en) 2019-10-09
US20190283917A1 (en) 2019-09-19
CN210126703U (en) 2020-03-06

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