EP2132098B1 - Glue application device for hot gluing using contactless temperature control - Google Patents

Glue application device for hot gluing using contactless temperature control Download PDF

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Publication number
EP2132098B1
EP2132098B1 EP08707662A EP08707662A EP2132098B1 EP 2132098 B1 EP2132098 B1 EP 2132098B1 EP 08707662 A EP08707662 A EP 08707662A EP 08707662 A EP08707662 A EP 08707662A EP 2132098 B1 EP2132098 B1 EP 2132098B1
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EP
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Prior art keywords
glue
glue roller
temperature
application device
roller
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EP08707662A
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German (de)
French (fr)
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EP2132098A1 (en
Inventor
Carsten Beckhaus
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KHS GmbH
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KHS GmbH
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Priority to PL08707662T priority Critical patent/PL2132098T3/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
    • B65C9/20—Gluing the labels or articles
    • B65C9/22—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating
    • B65C9/2247—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating using liquid rollers or bands
    • B65C9/2256—Applying the liquid on the label
    • B65C9/2265—Applying the liquid on the label continuously, i.e. an uninterrupted film
    • 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
    • B65C2009/0071—Details of glueing devices
    • B65C2009/0075—Constructional details of glueing rollers

Definitions

  • the invention relates to a gluing device, for example for a so-called roll-feed labeler, for labeling of containers, such as bottles, cans and the like using glue, wherein on the rotatable part of the glue roller a temperature measuring device and a power generator and an actuator and outside the rotating part of the glue roller, a sensor for detecting the actions of the actuator, which correspond for example to the measured data, are arranged, wherein for the temperature measuring device and the actuator no external, ie outside the rotating part of the glue roller or outside the gluing device arranged power supply is required.
  • the labeling of bottles, cans or other substantially rotationally symmetrical packaging by means of glue for example a hot glue or even a cold glue is known.
  • the DE 10 2006 051360 A1 shows such a device.
  • a rotatable glue roller is continuously coated with glue via an adjacent distributor module.
  • the glue-coated surface of the glue roller is unrolled on the back of labels, which are located on an adjacent, rotating vacuum roller.
  • the glue In order to achieve sufficient fluidity of the hot glue used here, the glue must be heated to about 140 ° C, including heating devices along both the cable routes, in the distributor module and in the glue roller are provided.
  • the temperature of the hot glue must be kept as close as possible so as not to undesirably alter the adhesive properties of the hot glue. Both too high and too low a temperature can have the effect that the actual bonding process is adversely affected, causing labels to slip or even detach from the labeled container. Both are undesirable in practice.
  • the measurement of Leimwalzentemperatur and thus the temperature of the hot glue is usually contactless by means of optical sensors.
  • This optical measurement of the temperature on the surface of the glue roller and its subsequent control is a certain problem, because in the known contactless measurement glue residues, vapors, liquid or protective adhesions on the surface to be measured or on the surface of the sensor change the signal.
  • the object of the invention is thus to provide a labeling method which is less susceptible to interference than prior art labeling methods, but has no disadvantages in terms of practicability over these. simultaneously a labeling device for carrying out the method according to the invention is presented.
  • the gluing device comprises, for example, the following components: a rotatable glue roller, a glue roller associated heating device, a supply line and a collection device for glue, a storage container for glue and the Reservoir associated heating device, and a measuring and control device for the temperature of the glue roller.
  • the gluing device is characterized in that a temperature measuring device and an actuator are arranged on the rotating part of the glue roller, and that outside the rotating part of the glue roller a sensor for detecting the actions of the actuator is arranged.
  • a temperature measuring device and an actuator are arranged on the rotating part of the glue roller, and that outside the rotating part of the glue roller a sensor for detecting the actions of the actuator is arranged.
  • the temperature measuring device and the actuator no external, i. Voltage or power supply arranged outside the rotating part of the glue roller is required, whereby u.a.
  • the design and manufacturing costs are reduced because, for example, rotary distributor for electrical energy and / or the transmission of data can be saved.
  • the temperature measuring device ideally comprises a power generator. This embodiment can be supplemented by further providing a thermocouple serving as a temperature sensor as part of the temperature measuring device.
  • actuators are available.
  • An advantageous embodiment is to use as an actuator, for example, radio signals emitting transmitter.
  • a preferred frequency range of known radio modules, for example, is not restrictive in the range between 860 MHz and 870 MHz.
  • An improved variant of the gluing device is that a digital-to-analog converter is arranged on the rotating glue roller, which is electrically connected to the temperature measuring device and / or the transmission module.
  • the invention further comprises a method for applying labels to containers, such as bottles, cans and the like by means of hot glue, in which at least one gluing device according to one of the preceding embodiments is used.
  • the temperature on the glue roller between 130 ° C and 170 ° C and is ideally between 135 ° C and 145 ° C.
  • the invention further provides a method for applying labels to containers, such as bottles, cans and the like by means of cold glue, in which at least one gluing device according to one of the preceding embodiments is used.
  • the temperature on the glue roller in the range of 20 ° C and 50 ° C and is ideally between 30 ° C and 35 ° C.
  • a power generator In an experimental set-up, a power generator, a transmitter module, a DC-DC converter and a temperature sensor designed as a thermocouple were arranged on the rotating part of the glue roller. Outside the gluing device at a distance of about 10 m, a receiver module and a computer-based evaluation and control unit connected thereto were placed.
  • the power generator consisted in a first experimental set-up of Peltier elements connected in series, which provided the power required for the transmitter module, the power being generated in a manner known per se by utilizing the temperature of the glue roller.
  • the intended transmission module allows, for example, the cyclical transmission of analog values and / or digital values, the integrated power requirement of the module during transmission being approximately 200 to 400 ⁇ A.
  • the input voltage of 150 mV supplied by the temperature sensor was converted into a usable voltage of 3 volts.
  • the transmitter module and the DC-DC converter were thermally insulated in the glue roller and provided with an air cooler.
  • a setpoint temperature which corresponds to the desired operating temperature and is clearly above that, is predetermined by a superordinate controller for the glue roller initially at room temperature Room temperature is. Due to the trained control circuit to achieve and maintain the setpoint temperature, the existing heating elements, for example, operate at maximum power.
  • the energy generator of the gluing roller supplied energy sufficient to supply the co-rotating components, and the system thus passed from the first stage to the second stage, this transition representing the transition from control to control operation.
  • the voltage amplified and conditioned by the analog part of the temperature sensor designed as a thermocouple was cyclically transmitted to the receiver module by the transmission module, and the data of the actual temperature of the higher-level evaluation and control unit were made available by the receiver module.
  • the evaluation and control unit processed the values of the actual temperature algorithmically and generated a manipulated variable corresponding to the respective current setpoint.
  • the evaluation and control unit regulated the temperature of the glue roller within a range of 130 ° C +/- 2 ° C with sufficient accuracy.
  • the gluing device is exemplary in FIG FIG. 1 shown.
  • the schematic representation shows the glue application element and the glue roller of a gluing device for labels, together with a label transfer cylinder (eg vacuum cylinder) of a labeling unit of a labeling machine, not otherwise shown.
  • a label transfer cylinder eg vacuum cylinder
  • Gluing device 1 shown in a conventional manner consists of a substantially strip-like glue application and distribution element 2 and from around a vertical roll axis circumferentially driven glue roller 3, to be provided with the Etikettenleim at the back and on the periphery of a label transport cylinder 4 (vacuum cylinder ) held labels 5 or be glued to be glued label pallets, as is known in the art.
  • a label transport cylinder 4 vacuum cylinder
  • the glue application and distribution element 2 has a strip-like, with its longitudinal extent parallel to the axis of the glue roller oriented housing in which u.a. a heater, not shown, is provided and which forms on a longitudinal side of a part-circular curved bearing surface against which the glue roller 3 each with a part of its circular cylindrical peripheral surface is tight or almost tight.
  • the contact surface 7 is for this purpose the circular cylindrical peripheral surface of the glue roller 4 formed accordingly.
  • the hollow glue roller 3 which is rotatably mounted about its vertical axis, for example, four axially parallel aligned electric heating elements 10 are provided, which heat the glue roller 3 from the inside.
  • the heating elements 10 are stationary, so that in operation of the gluing device 1, the cylindrical peripheral surface of the glue roller 3 rotates about these heating elements 10.
  • the power generator 11 and the transmitter 12 are arranged centrally. These are with each other and with the near the cylindrical outer wall the glue roller 3 arranged temperature sensor 13, electrically conductively connected, which may also be data lines in these electrically conductive connections.
  • the receiver 14 is arranged, which is connected to a computer-aided evaluation and control unit 15.
  • the receiver 14 receives the radio signals coming from the transmitter 12 and forwards them to the evaluation and control unit 15. If necessary, the heating elements 10 and / or the heating device of the glue application and distribution element 2 are regulated in accordance with the predetermined desired heating values.
  • the power generator 11 used was formed as a Peltier element.
  • the advantages resulting from the arrangement of the energy generator 11 in the rotating part of the glue roller can also be realized if other configurations of the energy generator 11 are used.
  • solar cells as an energy generator.
  • Modern models of solar cells are known to have such performance parameters that these solar cells also provide the electrical power needed for operation when unfavorable operating conditions prevail. These unfavorable operating conditions can be present, for example, during the night, when the solar cells for energy production only the switched, artificial hall lighting, but not the much more intense sunlight is available.
  • a generator within the rotating glue roller, which uses the rotation of the glue roller to generate the necessary operating energy. It is advantageous if the generator is assigned an energy storage, for example in the form of a rechargeable battery or even a capacitor in order to have the then necessary energy available even in the standstill phases of the glue roller.
  • the actuator can also be a transmitter for preferably modulated light, wherein this transmitter is associated with a corresponding photosensitive component as a sensor.
  • the modulation of the light represents a measure of the actual temperature of the glue roller.
  • the actuator may be a mechanical element, for example a retractable and extendable pin or piston, the frequency of extension and retraction or the degree of extension representing a measure of the actual temperature of the glue roller.
  • the associated sensor it may be, for example, a proximity switch corresponding to a proximity switch.
  • the actuator may be a magnetic coil in which the strength of the magnetic field generated by it represents a measure of the actual temperature of the glue roller.
  • the associated sensor may be, for example, a measuring device for the strength of a magnetic field, for example a Hall sensor.

Landscapes

  • Coating Apparatus (AREA)
  • Labeling Devices (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Making Paper Articles (AREA)

Abstract

The invention provides a glue application device (1), particularly for use in labeling machines, for labeling containers, such as bottles, cans, and the like, using glue, comprising a rotating glue roller (3), at least one heating device (10) associated with the glue roller, at least one feed line for glue, at least one storage container for glue, and a measuring and controlling device for the temperature of the glue roller. For this purpose, the invention provides that at least one temperature measurement device (11, 12, 13) and an actuator (12) controlled by the temperature measurement device are disposed on the rotating part of the glue roller, and that a sensor (14) is disposed outside of the rotating part of the glue roller, wherein no external energy supply is required for the temperature measurement device and for the actuator.

Description

Die Erfindung betrifft eine Beleimungsvorrichtung, zum Beispiel für einen so genannten Roll-Feed-Etikettierer, zum Etikettieren von Behältern, wie Flaschen, Dosen und dergleichen unter Nutzung von Leim, wobei auf dem rotierbaren Teil der Leimwalze eine Temperaturmessvorrichtung sowie ein Energieerzeuger und ein Aktor und außerhalb des rotierenden Teils der Leimwalze ein Sensor zum Erfassen der Aktionen des Aktors , welche beispielsweise den Messdaten entsprechen, angeordnet sind, wobei für die Temperaturmessvorrichtung und den Aktor keine externe, d.h. außerhalb des rotierenden Teils der Leimwalze bzw. außerhalb der Beleimungsvorrichtung angeordnete Energieversorgung erforderlich ist.The invention relates to a gluing device, for example for a so-called roll-feed labeler, for labeling of containers, such as bottles, cans and the like using glue, wherein on the rotatable part of the glue roller a temperature measuring device and a power generator and an actuator and outside the rotating part of the glue roller, a sensor for detecting the actions of the actuator, which correspond for example to the measured data, are arranged, wherein for the temperature measuring device and the actuator no external, ie outside the rotating part of the glue roller or outside the gluing device arranged power supply is required.

Die Etikettierung von Flaschen, Dosen oder anderen im Wesentlichen rotationssymmetrischen Verpackungen mittels Leim, beispielsweise einem Heißleim oder aber auch einem Kaltleim ist bekannt. Die DE 10 2006 051360 A1 zeigt eine solche Vorrichtung. Eine rotierbare Leimwalze wird über ein angrenzendes Verteilermodul kontinuierlich mit Leim beschichtet. Die mit Leim belegte Oberfläche der Leimwalze wird auf der Rückseite von Etiketten abgerollt, welche sich auf einer angrenzenden, rotierenden Vakuumwalze befinden. Um eine ausreichende Fließfähigkeit des hier verwendeten Heißleims zu erreichen, muss der Leim auf ca. 140°C erhitzt werden, wozu Heizvorrichtungen sowohl entlang der Leitungswege, in dem Verteilermodul und auch in der Leimwalze vorgesehen sind. Die Temperatur des Heißleims muss möglichst genau eingehalten werden, um die KlebeEigenschaften des Heißleims nicht in unerwünschter Weise zu verändern. Sowohl eine zu hohe, als auch eine zu niedrige Temperatur können zur Folge haben, dass das der eigentliche Klebevorgang negativ beeinflusst wird, wodurch Etiketten verrutschen oder sich sogar vom etikettierten Behälter lösen können. Beides ist in der Praxis unerwünscht.The labeling of bottles, cans or other substantially rotationally symmetrical packaging by means of glue, for example a hot glue or even a cold glue is known. The DE 10 2006 051360 A1 shows such a device. A rotatable glue roller is continuously coated with glue via an adjacent distributor module. The glue-coated surface of the glue roller is unrolled on the back of labels, which are located on an adjacent, rotating vacuum roller. In order to achieve sufficient fluidity of the hot glue used here, the glue must be heated to about 140 ° C, including heating devices along both the cable routes, in the distributor module and in the glue roller are provided. The temperature of the hot glue must be kept as close as possible so as not to undesirably alter the adhesive properties of the hot glue. Both too high and too low a temperature can have the effect that the actual bonding process is adversely affected, causing labels to slip or even detach from the labeled container. Both are undesirable in practice.

Die Messung der Leimwalzentemperatur und somit auch der Temperatur des Heißleims erfolgt üblicherweise kontaktlos mittels optischer Sensoren. Diese optische Messung der Temperatur auf der Oberfläche der Leimwalze und deren nachfolgende Regelung stellt ein gewisses Problem dar, weil bei der bekannten kontaktlosen Messung Leimreste, Dämpfe, Flüssigkeits- oder Schutzanhaftungen an der zu messenden Oberfläche bzw. an der Oberfläche des Sensors das Signal verändern.The measurement of Leimwalzentemperatur and thus the temperature of the hot glue is usually contactless by means of optical sensors. This optical measurement of the temperature on the surface of the glue roller and its subsequent control is a certain problem, because in the known contactless measurement glue residues, vapors, liquid or protective adhesions on the surface to be measured or on the surface of the sensor change the signal.

DE 91 01 178 U1 offenbart eine Beleimungsvorrichtung gemäß dem Oberbegriff des Anspruchs 1. DE 91 01 178 U1 discloses a gluing device according to the preamble of claim 1.

Aufgabe der Erfindung ist es somit, ein Etikettierverfahren zur Verfügung zu stellen, welches weniger störanfällig ist als Etikettierverfahren aus dem Stand der Technik, aber gegenüber diesen keine Nachteile hinsichtlich der Durchführbarkeit aufweist. Gleichzeitig wird eine Etikettiervorrichtung zur Durchführung des erfindungsgemäßen Verfahrens vorgestellt.The object of the invention is thus to provide a labeling method which is less susceptible to interference than prior art labeling methods, but has no disadvantages in terms of practicability over these. simultaneously a labeling device for carrying out the method according to the invention is presented.

Diese Aufgabe löst die erfindungsgemäße Beleimungsvorrichtung gemäß Anpruch 1 und das erfindungsgemäße Verfahren gemäß Anspruch 9. Die Beleimungsvorrichtung umfasst beispielsweise die nachfolgenden Bauteile: eine rotierbare Leimwalze, eine der Leimwalze zugeordnete Heizvorrichtung, eine Zuführungsleitung und eine Sammelvorrichtung für Leim, einen Vorlagebehälter für Leim und eine dem Vorlagebehälter zugeordnete Heizvorrichtung, sowie eine Mess- und Regelvorrichtung für die Temperatur der Leimwalze. Die Beleimungsvorrichtung zeichnet sich dabei dadurch aus, dass auf dem rotierendem Teil der Leimwalze eine Temperaturmessvorrichtung sowie ein Aktor angeordnet sind, und dass außerhalb des rotierenden Teils der Leimwalze ein Sensor zur Ermittlung der Aktionen des Aktors angeordnet ist. Dabei ist für die Temperaturmessvorrichtung und den Aktor keine externe, d.h. außerhalb des rotierenden Teils der Leimwalze angeordnete Spannungs- oder Energieversorgung erforderlich, wodurch u.a. auch der konstruktive und fertigungstechnische Aufwand reduziert werden, da beispielsweise Drehverteiler für elektrische Energie und/oder die Übertragung von Daten eingespart werden können.The gluing device comprises, for example, the following components: a rotatable glue roller, a glue roller associated heating device, a supply line and a collection device for glue, a storage container for glue and the Reservoir associated heating device, and a measuring and control device for the temperature of the glue roller. The gluing device is characterized in that a temperature measuring device and an actuator are arranged on the rotating part of the glue roller, and that outside the rotating part of the glue roller a sensor for detecting the actions of the actuator is arranged. In this case, for the temperature measuring device and the actuator no external, i. Voltage or power supply arranged outside the rotating part of the glue roller is required, whereby u.a. Also, the design and manufacturing costs are reduced because, for example, rotary distributor for electrical energy and / or the transmission of data can be saved.

Die Temperaturmessvorrichtung umfasst idealer Weise einen Energieerzeuger. Diese Ausführungsform kann ergänzt werden, indem weiterhin ein als Temperatursensor dienendes Thermoelement als Teil der Temperaturmessvorrichtung vorgesehen wird.The temperature measuring device ideally comprises a power generator. This embodiment can be supplemented by further providing a thermocouple serving as a temperature sensor as part of the temperature measuring device.

Grundsätzlich stehen unterschiedliche Aktoren Verfügung. Eine vorteilhafte Ausführungsvariante besteht darin, als Aktor einen, beispielsweise Funksignale abgebenden Sender einzusetzen. Ein bevorzugter Frequenzbereich bekannter Funkmodule liegt beispielsweise aber nicht beschränkend im Bereich zwischen 860 MHz und 870 MHz.Basically, different actuators are available. An advantageous embodiment is to use as an actuator, for example, radio signals emitting transmitter. A preferred frequency range of known radio modules, for example, is not restrictive in the range between 860 MHz and 870 MHz.

Eine verbesserte Variante der Beleimungsvorrichtung besteht darin, dass auf der rotierenden Leimwalze ein Digital-Analogwandler angeordnet ist, welcher mit der Temperaturmessvorrichtung und/oder dem Sendemodul elektrisch verbunden ist.An improved variant of the gluing device is that a digital-to-analog converter is arranged on the rotating glue roller, which is electrically connected to the temperature measuring device and / or the transmission module.

Von der Erfindung ist weiterhin ein Verfahren zum Anbringen von Etiketten auf Behältern, wie Flaschen, Dosen und dergleichen mittels Heißleim umfasst, bei dem mindestens eine Beleimungsvorrichtung gemäß einer der vorstehenden Ausführungsvarianten eingesetzt wird. Dabei beträgt die Temperatur auf der Leimwalze zwischen 130°C und 170°C und liegt idealer Weise zwischen 135°C und 145°C.The invention further comprises a method for applying labels to containers, such as bottles, cans and the like by means of hot glue, in which at least one gluing device according to one of the preceding embodiments is used. The temperature on the glue roller between 130 ° C and 170 ° C and is ideally between 135 ° C and 145 ° C.

Von der Erfindung ist weiterhin ein Verfahren zum Anbringen von Etiketten auf Behältern, wie Flaschen, Dosen und dergleichen mittels Kaltleim umfasst, bei dem mindestens eine Beleimungsvorrichtung gemäß einer der vorstehenden Ausführungsvarianten eingesetzt wird. Dabei beträgt die Temperatur auf der Leimwalze im Bereich von 20°C und 50°C und liegt idealer Weise zwischen 30°C und 35°C. Bei der Verwendung von Kaltleim ergeben sich die Vorteile der erfindungsgemäßen Vorrichtung u.a. dadurch, dass gerade das Anfahren einer Etikettiermaschine bei niedrigen Außentemperaturen, wie sie je nach Aufstellungsort der Etikettiermaschine häufiger auftreten können wesentlich verbessert wird.The invention further provides a method for applying labels to containers, such as bottles, cans and the like by means of cold glue, in which at least one gluing device according to one of the preceding embodiments is used. The temperature on the glue roller in the range of 20 ° C and 50 ° C and is ideally between 30 ° C and 35 ° C. When using cold glue, the advantages of the device according to the invention, inter alia, the fact that just the start of a labeling machine at low outdoor temperatures, as they can occur more frequently depending on the site of the labeling machine is substantially improved.

In einem Versuchsaufbau wurden ein Energieerzeuger, ein Sendemodul, ein DC-DC-Wandler und ein als Thermoelement ausgebildeter Temperatursensor auf dem rotierenden Teil der Leimwalze angeordnet. Außerhalb der Beleimungsvorrichtung im Abstand von ca. 10 m wurde ein Empfängermodul und eine damit verbundene, computerbasierende Auswerte- und Steuereinheit platziert. Der Energieerzeuger bestand in einem ersten Versuchsaufbau aus in Reihe geschalteten Peltier-Elementen, welche die benötigte Leistung für das Sendemodul bereitstellten, wobei die Leistung auf an sich bekannte Weise durch Ausnutzung der Temperatur der Leimwalze erzeugt wurde. Das vorgesehene Sendemodul ermöglicht die beispielsweise zyklische Sendung von Analogwerten und/oder Digitalwerten, wobei der integrierte Strombedarf des Moduls während des Sendens bei etwa 200 bis 400 µA liegt.In an experimental set-up, a power generator, a transmitter module, a DC-DC converter and a temperature sensor designed as a thermocouple were arranged on the rotating part of the glue roller. Outside the gluing device at a distance of about 10 m, a receiver module and a computer-based evaluation and control unit connected thereto were placed. The power generator consisted in a first experimental set-up of Peltier elements connected in series, which provided the power required for the transmitter module, the power being generated in a manner known per se by utilizing the temperature of the glue roller. The intended transmission module allows, for example, the cyclical transmission of analog values and / or digital values, the integrated power requirement of the module during transmission being approximately 200 to 400 μA.

Mit dem DC-DC-Wandler wurde die vom Temperatursensor gelieferte Eingangsspannung von 150 mV in eine nutzbare Spannung von 3 Volt umgewandelt. Zum Schutz gegen Überhitzung wurden das Sendemodul und der DC-DC-Wandler in der Leimwalze thermisch isoliert und mit einem Luftkühler versehen. Bei der Durchführung des Etikettierverfahrens wurde in einer ersten Stufe, welche beispielsweise dem Anfahren der Etikettiermaschine nach einer längeren Stillstandsphase entspricht, für die sich zunächst auf Raumtemperatur befindende Leimwalze von einer übergeordneten Steuerung eine Soll-Temperatur vorgegeben, welche der gewünschten Betriebstemperatur entspricht und deutlich oberhalb der Raumtemperatur liegt. Durch den ausgebildete Regelkreis zur Erzielung und Einhaltung der Soll-Temperatur werden die vorhandenen Heizelemente beispielsweise mit maximaler Leistung betrieb.With the DC-DC converter, the input voltage of 150 mV supplied by the temperature sensor was converted into a usable voltage of 3 volts. To protect against overheating, the transmitter module and the DC-DC converter were thermally insulated in the glue roller and provided with an air cooler. When carrying out the labeling process, in a first stage, which corresponds, for example, to starting the labeling machine after a longer standstill phase, a setpoint temperature, which corresponds to the desired operating temperature and is clearly above that, is predetermined by a superordinate controller for the glue roller initially at room temperature Room temperature is. Due to the trained control circuit to achieve and maintain the setpoint temperature, the existing heating elements, for example, operate at maximum power.

Nach einer hinreichenden Aufheizzeit lieferte der Energieerzeuger der Beleimungswalze eine zur Versorgung der mitdrehenden Komponenten ausreichende Energie und das System ging somit von der ersten Stufe in die zweite Stufe über, wobei dieser Übergang dem Übergang vom Stell- in den Regelbetrieb darstellt.After a sufficient heat-up time, the energy generator of the gluing roller supplied energy sufficient to supply the co-rotating components, and the system thus passed from the first stage to the second stage, this transition representing the transition from control to control operation.

Die vom Analogteil verstärkte und aufbereitete Spannung des als Thermoelements ausgebildeten Temperaturfühlers wurde vom Sendemodul zyklisch zum Empfängermodul übertragen und vom Empfängermodul wurden die Daten der Ist-Temperatur der übergeordneten Auswerte- und Steuereinheit zur Verfügung gestellt. Die Auswerte- und Steuereinheit verarbeitete die Werte der Ist-Temperatur algorithmisch und generierte eine dem jeweils aktuellen Sollwert entsprechende Stellgröße. Die Auswerte- und Steuereinheit regulierte während eines einstündigen Probelaufes mit hinreichender Genauigkeit die Temperatur der Leimwalze in einem Bereich von 130°C +/- 2°C.The voltage amplified and conditioned by the analog part of the temperature sensor designed as a thermocouple was cyclically transmitted to the receiver module by the transmission module, and the data of the actual temperature of the higher-level evaluation and control unit were made available by the receiver module. The evaluation and control unit processed the values of the actual temperature algorithmically and generated a manipulated variable corresponding to the respective current setpoint. During a one-hour test run, the evaluation and control unit regulated the temperature of the glue roller within a range of 130 ° C +/- 2 ° C with sufficient accuracy.

Die Beleimungsvorrichtung ist beispielhaft in Figur 1 dargestellt. Die schematische Darstellung zeigt das Leimauftragselement und die Leimwalze einer Beleimungsvorrichtung für Etiketten, zusammen mit einem Etikettenübergabezylinder (z.B. Vakuumzylinder) eines ansonsten nicht dargestellten Etikettieraggregates einer Etikettiermaschine.The gluing device is exemplary in FIG FIG. 1 shown. The schematic representation shows the glue application element and the glue roller of a gluing device for labels, together with a label transfer cylinder (eg vacuum cylinder) of a labeling unit of a labeling machine, not otherwise shown.

Die in Fig. 1 gezeigte Beleimungsvorrichtung 1 besteht in an sich bekannter Weise aus einem im Wesentlichen leistenartigen Leimauftrag- und Verteilerelement 2 und aus der um eine vertikale Walzenachse umlaufend angetriebenen Leimwalze 3, an der die mit dem Etikettenleim an der Rückseite zu versehenen und am Umfang einen Etikettentransportzylinder 4 (Vakuumzylinder) gehaltenen Etiketten 5 oder aber zu beleimende Etikettenpaletten vorbeibewegt werden, wie dies dem Fachmann bekannt ist.In the Fig. 1 Gluing device 1 shown in a conventional manner consists of a substantially strip-like glue application and distribution element 2 and from around a vertical roll axis circumferentially driven glue roller 3, to be provided with the Etikettenleim at the back and on the periphery of a label transport cylinder 4 (vacuum cylinder ) held labels 5 or be glued to be glued label pallets, as is known in the art.

Das Leimauftrag- und Verteilerelement 2 besitzt ein leistenartiges, mit seiner Längserstreckung parallel zur Achse der Leimwalze orientiertes Gehäuse, in welchem u.a. eine nicht dargestellte Heizeinrichtung vorgesehen ist und welches an einer Längsseite eine teilkreisförmig gewölbte Anlagefläche bildet, gegen die die Leimwalze 3 jeweils mit einem Teil ihrer kreiszylinderförmigen Umfangsfläche dicht oder nahezu dicht anliegt. Die Anlagefläche 7 ist hierfür der kreiszylinderförmigen Umfangsfläche der Leimwalze 4 entsprechend geformt. Während des Betriebes der Beleimungsvorrichtung 1 wird über eine Leimpumpe 8 aus einer Leimwanne 9 ständig Leim in den Kopfbereich des Verteilerelementes 2 gepumpt und über ein nicht dargestelltes Verteilersystem im Bereich der Anlagefläche 7 auf die Leimwalze 3 aufgetragen.The glue application and distribution element 2 has a strip-like, with its longitudinal extent parallel to the axis of the glue roller oriented housing in which u.a. a heater, not shown, is provided and which forms on a longitudinal side of a part-circular curved bearing surface against which the glue roller 3 each with a part of its circular cylindrical peripheral surface is tight or almost tight. The contact surface 7 is for this purpose the circular cylindrical peripheral surface of the glue roller 4 formed accordingly. During operation of the glueing device 1, glue is constantly pumped from a glue trough 9 into the head region of the distributor element 2 via an glue pump 8 and applied to the glue roller 3 in the area of the contact surface 7 via an unillustrated distributor system.

Im Inneren der um ihre Hochachse rotierbar gelagerten, hohlen Leimwalze 3 sind beispielsweise vier achsparallel ausgerichtete elektrische Heizelemente 10 vorgesehen, die die Leimwalze 3 von innen erwärmen. Die Heizelemente 10 sind ortsfest, so dass im Betrieb der Beleimungsvorrichtung 1 die zylindrische Umfangsfläche der Leimwalze 3 um diese Heizelemente 10 rotiert. Auf der deckelartigen Oberseite der Leimwalze 3 sind zentral der Energieerzeuger 11 und der Sender 12 angeordnet. Diese sind untereinander und mit dem in Nähe der zylindrischen Außenwand der Leimwalze 3 angeordneten Temperaturfühler 13, elektrisch leitend verbunden, wobei es sich bei diesen elektrisch leitenden Verbindungen auch um Datenleitungen handeln kann.In the interior of the hollow glue roller 3, which is rotatably mounted about its vertical axis, for example, four axially parallel aligned electric heating elements 10 are provided, which heat the glue roller 3 from the inside. The heating elements 10 are stationary, so that in operation of the gluing device 1, the cylindrical peripheral surface of the glue roller 3 rotates about these heating elements 10. On the lid-like top of the glue roller 3, the power generator 11 and the transmitter 12 are arranged centrally. These are with each other and with the near the cylindrical outer wall the glue roller 3 arranged temperature sensor 13, electrically conductively connected, which may also be data lines in these electrically conductive connections.

Außerhalb der Beleimungsvorrichtung 1 und im Sendebereich des Senders 12 ist der Empfänger 14 angeordnet, der mit einer computergestützten Auswerte- und Steuereinheit 15 verbunden ist. Der Empfänger 14 empfängt die vom Sender 12 kommenden Funksignale und leitet diese an die Auswerte- und Steuereinheit 15 weiter. Bedarfsweise werden entsprechend den vorgegebenen Sollheizwerten die Heizelemente 10 und/oder die Heizeinrichtung des Leimauftrag- und Verteilerelement 2 geregelt.Outside the gluing device 1 and in the transmitting region of the transmitter 12, the receiver 14 is arranged, which is connected to a computer-aided evaluation and control unit 15. The receiver 14 receives the radio signals coming from the transmitter 12 and forwards them to the evaluation and control unit 15. If necessary, the heating elements 10 and / or the heating device of the glue application and distribution element 2 are regulated in accordance with the predetermined desired heating values.

In der vorstehenden Beschreibung wurde lediglich eine Ausführungsform beschrieben, in welcher der verwendete Energieerzeuger 11 als Peltier-Element ausgebildet war. Die sich durch die Anordnung des Energieerzeugers 11 im rotierenden Teil der Leimwalze ergebenden Vorteile, lassen sich auch dann realisieren, wenn andere Ausgestaltungen des Energieerzeugers 11 verwendet werden.In the above description, only one embodiment has been described in which the power generator 11 used was formed as a Peltier element. The advantages resulting from the arrangement of the energy generator 11 in the rotating part of the glue roller can also be realized if other configurations of the energy generator 11 are used.

So ist es erfindungsgemäß ebenfalls vorgesehen, als Energieerzeuger Solarzellen zu verwenden. Moderne Baumuster von Solarzellen verfügen bekannter Maßen über solche Leistungsparameter, dass diese Solarzellen auch die zum Betrieb benötigte elektrische Leistung zur Verfügung stellen, wenn ungünstige Betriebsbedingungen herrschen. Diese ungünstigen Betriebsbedingungen können beispielsweise während der Nacht vorliegen, wenn den Solarzellen zur Energieerzeugung lediglich die eingeschaltete, künstliche Hallenbeleuchtung, nicht aber das wesentlich intensivere Sonnenlicht zur Verfügung steht.Thus, it is also provided according to the invention to use solar cells as an energy generator. Modern models of solar cells are known to have such performance parameters that these solar cells also provide the electrical power needed for operation when unfavorable operating conditions prevail. These unfavorable operating conditions can be present, for example, during the night, when the solar cells for energy production only the switched, artificial hall lighting, but not the much more intense sunlight is available.

Ebenfalls ist es erfindungsgemäß vorgesehen, innerhalb der rotierenden Leimwalze einen Generator anzuordnen, welcher die Rotation der Leimwalze zur Erzeugung der notwendigen Betriebsenergie nutzt. Dabei ist es von Vorteil, wenn dem Generator ein Energiespeicher, beispielsweise in Form eines Akkumulators oder aber auch eines Kondensators zugeordnet wird, um auch in den Stillstandsphasen der Leimwalze die dann notwendige Energie zur Verfügung zu haben.It is also provided according to the invention to arrange a generator within the rotating glue roller, which uses the rotation of the glue roller to generate the necessary operating energy. It is advantageous if the generator is assigned an energy storage, for example in the form of a rechargeable battery or even a capacitor in order to have the then necessary energy available even in the standstill phases of the glue roller.

Es versteht sich von selbst, dass die oben beispielhaft genannten Ausgestaltungen auch in beliebiger Kombination, auch mit weiteren nicht explizit genannten Formen von geeigneten Energieerzeugern verwendet werden können, ohne dass dadurch der Schutzumfang der vorliegenden Erfindung verlassen wird.It goes without saying that the embodiments mentioned above by way of example also in any combination, even with other not explicitly mentioned Forms of suitable power generators can be used without departing from the scope of the present invention.

In der vorstehenden Beschreibung wurde lediglich die Anwendung eines Funksenders als Aktor beschrieben. Erfindungsgemäß ist weiterhin die Anwendung weiterer Elemente vorgesehen. So kann es sich bei dem Aktor auch um einen Sender für vorzugsweise moduliertes Licht handeln, wobei diesem Sender als Sensor ein entsprechendes lichtempfindliches Bauteil zugeordnet ist. Die Modulation des Lichtes stellt dabei ein Maß für die Ist-Temperatur der Leimwalze dar.In the above description, only the application of a radio transmitter as an actuator has been described. According to the invention, the use of further elements is further provided. Thus, the actuator can also be a transmitter for preferably modulated light, wherein this transmitter is associated with a corresponding photosensitive component as a sensor. The modulation of the light represents a measure of the actual temperature of the glue roller.

Ebenfalls kann es sich bei dem Aktor um ein mechanisches Element, beispielsweise einen ein- und ausfahrbaren Bolzen oder Kolben handeln, wobei die Häufigkeit des Ein- und Ausfahrens, bzw. das Maß des Ausfahrens ein Maß für die Ist-Temperatur der Leimwalze darstellt. Bei dem zugeordneten Sensor, kann es sich beispielsweise um einen Näherungsinitiator entsprechend einem Näherungsschalter handeln.Likewise, the actuator may be a mechanical element, for example a retractable and extendable pin or piston, the frequency of extension and retraction or the degree of extension representing a measure of the actual temperature of the glue roller. In the associated sensor, it may be, for example, a proximity switch corresponding to a proximity switch.

Ebenfalls kann es sich bei dem Aktor um eine Magnetspule handeln, bei welcher die Stärke des von dieser erzeugten Magnetfeldes ein Maß für die Ist-Temperatur der Leimwalze darstellt. Bei dem zugeordneten Sensor, kann es sich beispielsweise um eine Messvorrichtung für die Stärke eines Magnetfeldes, beispielsweise einen Hall-Sensor handeln.Likewise, the actuator may be a magnetic coil in which the strength of the magnetic field generated by it represents a measure of the actual temperature of the glue roller. The associated sensor may be, for example, a measuring device for the strength of a magnetic field, for example a Hall sensor.

Claims (11)

  1. Glue application device (1), particularly for use in labelling machines, for labelling containers, such as bottles, cans, and the like, using glue, comprising a rotating glue roller (3), at least one heating device associated with the glue roller, at least one feed line (8) for glue, at least one storage container for glue, and a measuring and controlling device for the temperature of the glue roller, wherein, on the rotating part of the glue roller (3), at least one temperature measurement device is disposed, characterised in that an actuator (12) controlled by the temperature measurement device (11, 12, 13) is disposed on the rotating part of the glue roller and that a sensor (14) is disposed outside of the rotating part of the glue roller (3), wherein no external energy supply is required for the temperature measurement device and for the actuator.
  2. Glue application device according to claim 1, characterised in that the temperature measurement device (11, 12, 13) comprises an energy generator (11).
  3. Glue application device according to claim 2, characterised in that the energy generator (11) is at least one thermocouple and/or at least one solar cell and/or at least one generator and/or at least one Peltier element.
  4. Glue application device according to one of the preceding claims, characterised in that the actuator is a radio transmitter (12) and/or a light transmitter and/or a mechanical element and/or a magnetic field that can be influenced.
  5. Glue application device according to one of the preceding claims, characterised in that the sensor is a radio transmitter (14) and/or a light sensor and/or a proximity initiator and/or a measurement device for the strength of a magnetic field.
  6. Glue application device according to one of the preceding claims, characterised in that the temperature measurement device comprises a temperature sensor (13) designed as a thermocouple.
  7. Glue application device according to claim 4, characterised in that the radio transmitter (12) is one that transmits at frequencies from 860 MHz to 870 MHz.
  8. Glue application device according to one of the preceding claims, characterised in that a digital/analogue converter is disposed on the rotating part of the glue roller (3), said converter being electrically connected with the temperature measurement device (13) and/or the actuator (12).
  9. Method for applying labels to containers, such as bottles, cans, and the like, using hot glue, characterised in that a glue application device (1) according to one of the preceding claims is used.
  10. Method according to claim 9, characterised in that the temperature of the glue roller (3) is between 130°C and 170°C and, ideally, between 135°C and 145°C.
  11. Method according to claim 9, characterised in that the temperature of the glue roller (3) is between 20°C and 50°C and, ideally, between 30°C and 35°C.
EP08707662A 2007-03-02 2008-02-12 Glue application device for hot gluing using contactless temperature control Active EP2132098B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08707662T PL2132098T3 (en) 2007-03-02 2008-02-12 Glue application device for hot gluing using contactless temperature control

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007010258 2007-03-02
PCT/EP2008/001033 WO2008107058A1 (en) 2007-03-02 2008-02-12 Glue application device for hot gluing using contactless temperature control

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EP2132098A1 EP2132098A1 (en) 2009-12-16
EP2132098B1 true EP2132098B1 (en) 2012-01-11

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AT (1) ATE540870T1 (en)
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DE202014103334U1 (en) * 2014-07-18 2015-10-21 Krones Ag Glue roller for applying hot glue

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DE102009033030A1 (en) * 2009-07-02 2011-01-05 Krones Ag Leimaufbereitungsvorrichtung
EP2746177A1 (en) * 2012-12-22 2014-06-25 Krones AG Removal device for removal of labels, label and method for applying glue to a label
DE102013206886A1 (en) 2013-04-17 2014-10-23 Krones Ag Glue container for hot glue applications
DE102014101981A1 (en) 2014-02-17 2015-08-20 Krones Ag Method for heating an element in a machine in the field of the beverage, beverage filling or beverage packaging industry
GB201504379D0 (en) * 2015-03-16 2015-04-29 Videojet Technologies Inc A machine and method for its operation

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DE9101178U1 (en) * 1991-02-02 1991-04-25 Kronseder, Hermann, 8404 Woerth, De
DE9102068U1 (en) * 1991-02-22 1991-05-16 Krones Ag Hermann Kronseder Maschinenfabrik, 8402 Neutraubling, De
WO1996009213A2 (en) * 1994-09-19 1996-03-28 Cms Gilbreth Packaging Systems, Inc. Labelling machine
DE10203658A1 (en) * 2002-01-30 2003-07-31 Khs Masch & Anlagenbau Ag Adhesive applicator device for labeling machines has applicator roller heated by internal/external heat pipes or similar heaters

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Publication number Priority date Publication date Assignee Title
DE202014103334U1 (en) * 2014-07-18 2015-10-21 Krones Ag Glue roller for applying hot glue

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WO2008107058A1 (en) 2008-09-12
PL2132098T3 (en) 2012-06-29
EP2132098A1 (en) 2009-12-16
ATE540870T1 (en) 2012-01-15

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