EP1159080A2 - Hot melt applicator - Google Patents

Hot melt applicator

Info

Publication number
EP1159080A2
EP1159080A2 EP00907665A EP00907665A EP1159080A2 EP 1159080 A2 EP1159080 A2 EP 1159080A2 EP 00907665 A EP00907665 A EP 00907665A EP 00907665 A EP00907665 A EP 00907665A EP 1159080 A2 EP1159080 A2 EP 1159080A2
Authority
EP
European Patent Office
Prior art keywords
heating
unit
adhesive
designed
temperature
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.)
Granted
Application number
EP00907665A
Other languages
German (de)
French (fr)
Other versions
EP1159080B1 (en
Inventor
Andre SCHOMÄCKER
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.)
Steinel GmbH and Co KG
Original Assignee
Steinel GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Steinel GmbH and Co KG filed Critical Steinel GmbH and Co KG
Publication of EP1159080A2 publication Critical patent/EP1159080A2/en
Application granted granted Critical
Publication of EP1159080B1 publication Critical patent/EP1159080B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00523—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material
    • B05C17/00526—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application
    • B05C17/0053—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application the driving means for the material being manual, mechanical or electrical
    • B05C17/00533—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application the driving means for the material being manual, mechanical or electrical comprising a piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00523—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material
    • B05C17/00546—Details of the heating means

Definitions

  • the present invention relates to a hot-melt adhesive device, in particular a hot-melt adhesive device designed in the form of a gun.
  • a hot-melt adhesive device designed in the form of a gun.
  • 1D voltage-operated heating units in a manually operable gun housing which is provided with a feed unit for fixed adhesive rods to be heated (hence often also called a "hot glue device"), are sufficiently known from the prior art.
  • the object is achieved by the heat adhesive device with the features of claim 1 and the operating method with the features of claim 9.
  • the application unit which can be detached from the stand module, advantageously enables the heating module 5, which is preferably provided with a pistol-shaped handle, to be handled completely without cables or connections, so that not only difficult-to-reach places can be reached, but also potential ones that arise from an electrical supply cable Risks at the place of use can be avoided.
  • the detachability of the handle unit provided in accordance with the further development also enables simple replacement of used adhesive containers, which can more preferably be in the form of cartridges and, thanks to the structural design of the heating unit as a profile, with optimized,
  • the coding of the adhesive cartridge and the heating module which is provided in accordance with the further development, enables in a particularly advantageous manner a further flexibility of the application possibilities by special training or adjustment of heating elements.
  • the temperature switch provided in accordance with the further development enables the heating unit to be activated or deactivated as a function of an actual (actual) temperature, so that additional heating power is specifically switched on at measured temperatures below
  • the brightness control unit provided in accordance with the further development also eliminates the disadvantageous consequences 35 of devices kept in heating mode over a long period of time (for example overnight), both with regard to a deteriorating quantity of adhesive and to the electrical energy consumption. Further advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the figures; these show in
  • Fig. 1 an exploded view of the present
  • Heat adhesive device according to a first preferred embodiment with the essential mechanical components and their interaction with one another in the assembled state;
  • FIG. 2 a profile view of the heating unit of the embodiment according to FIG. 1, which is designed as a metal profile;
  • FIGS. 2 and 3 a detailed view of the heating unit according to FIGS. 2 and
  • FIG. 1 shows an exploded view of the mechanical and structural design of the hot-melt adhesive device according to the invention in accordance with a first preferred embodiment.
  • a stand unit 10 consisting of stand base plate 12 and stand housing 14, has a power supply line (not shown in the figure) and connection electronics which provide operating voltage for a pistol-shaped application or adhesive unit 18 by means of a pair of contacts 16.
  • the adhesive unit 18 is formed, on the one hand, from a handle realized from handle shells 20, 22, which can be releasably connected to a heating housing 26, consisting of housing shells 28, 30, by means of a bayonet locking unit 24 is.
  • the heating housing 26 encloses a heating profile made of aluminum (FIGS. 2 to 4) with a length 1 of approx. 80 mm, which offers a cylindrical interior for receiving a cylindrical adhesive cartridge 34, for example with liquid plastic or plastic that can be liquefied by external heat accommodates additional PTC heating elements.
  • the arrangement of the heating profile 32 and the cartridge 34 is fastened in the heating housing 26 by means of rear (36) or front (38) retaining rings made of heat-resistant plastic, the cartridge 34 being exposed at its outlet end and having an outlet 40.
  • the adhesive material heated by means of the heating profile 32 is dispensed from the cartridge by the pressure effect of a feed rod 42, which moves in the axial direction of the cartridge 34 through a feed unit formed by a feed lever 34 and a feed hook 46, engaging a toothing of the feed rod designed as a toothed rack can be as soon as an operator with his index finger actuates the feed lever 44 in the manner of a pistol trigger.
  • a brake element 48 designed as a clamp prevents the feed rod 42 from moving out against the pressure direction.
  • a thermal switch which contacts the heating profile piece 32 on the casing side in the assembled state and thus enables a temperature measurement; this electrical unit provides a control signal which controls the heating operation of the device in the manner to be described below.
  • the heating profile has a chamber section in the cross-sectional direction, which is designed to insert two PTC heating elements together with the contact. More precisely 3, a first PTC 52 is held in the receiving space in such a way that electrical voltage can be applied to it through contacts acting on the end of a first conductor segment 54 and a second, common conductor segment 56. The arrangement is surrounded by an electrically insulating sleeve 57. In the axial direction of the heating profile, a second PTC (not shown) sits flush and adjacent to the first and is contacted with the common, second conductor segment 56 on which
  • the first PTC is designed for continuous heating operation and, with a heating temperature of approximately 170 ° C., enables the heating profile to be permanently heated to a constant temperature between approximately 130 and approximately 140 ° C., which in the present exemplary embodiment is used as an operating Adhesive temperature
  • the second PTC is provided only for heating purposes, has a higher heating temperature of, for example, 300 ° C. and is only activated when the temperature detected in the receiving space 50 by means of a thermocouple
  • operating states i.e. current operating temperature below target operating temperature or at this
  • 30 operating states are visually recognizable to the user.
  • the user will therefore leave the adhesive unit 18 in the stand until, after the electrical switch-on, the target temperature is reached (which is achieved due to the additional, powerful PTC with a shorter heating time compared to the prior art), whereupon the adhesive unit 18 can then be removed and the adhesive is removed at the place of use by actuating the lever 44.
  • the adhesive unit 18 is brought back onto the stand and, if the current temperature of the adhesive in the cartridge has fallen below a predetermined limit value, the additional PTC is activated again for accelerated heating.
  • a color individualized and interchangeability of the heating device can be carried out for various adhesives and cartridges: for example, for certain adhesives that require a special temperature operating range, a heating profile 32 specially set up for this purpose can be accommodated in a color-coded housing, which in its color of the cartridge with this adhesive, so that incorrect assignments are excluded.
  • the operator can adapt and replace the color cartridge and associated heating housing for different adhesive applications.

Abstract

The invention relates to a hot melt applicator with an applicator element (18) that can be manually handled and that is configured to electrically heat an exchangeable adhesive container (40), especially for a thermofusible adhesive. Said applicator element further comprises a heater unit (32) that is provided for transferring heat to the adhesive container, encompasses a contact surface for the heat transfer and is equipped with an electrical heater element (52). Said electrical heater element consists of a material of a predetermined heat capacity and a support module (10) configured to impinge the heater element with an electric voltage when the applicator element is in the inactive holding state. Said support module is designed in such a manner that the heating element is impinged with voltage only in the holding state but not in the active state, when the applicator element is detached from the support module.

Description

BESCHREIBUNG DESCRIPTION
HEIZKLEBEVORRICHTUNGHEAT-ADHESIVE DEVICE
Die vorliegende Erfindung betrifft eine Heizklebevorrichtung, insbesondere eine in Pistolenform ausgebildete Heizklebevorrichtung. Derartige Vorrichtungen mit netzspan-The present invention relates to a hot-melt adhesive device, in particular a hot-melt adhesive device designed in the form of a gun. Such devices with mains voltage
1D nungsbetriebenen Heizungseinheiten in einem manuell betätigbaren und mit einer Vorschubeinheit für feste, zu erwärmende Klebestäbe (daher oft auch eine Bezeichnung "Heissklebevorrichtung") versehene Pistolengehäuse sind hinlänglich aus dem Stand der Technik bekannt, weisen je-1D voltage-operated heating units in a manually operable gun housing, which is provided with a feed unit for fixed adhesive rods to be heated (hence often also called a "hot glue device"), are sufficiently known from the prior art.
15 doch eine Reihe von Nachteilen auf: So erschwert die permanent notwendige Spannungsverbindung, etwa mittels eines Netzkabels, die freie Handhabung der Klebepistole, übliche, zu schmelzende Kleber in fester Stabform sind in ihrem Anwendungsspektrum begrenzt, und insbesondere ist die gleich-15 has a number of disadvantages: the permanently necessary voltage connection, for example by means of a mains cable, complicates the free handling of the glue gun, common, solid rod-shaped glues are limited in their range of applications, and in particular the
5D förmige Erwärmung des zum Gebrauch aufzuschmelzenden Klebers aufgrund der konstruktiven Realisierungen bekannter Heizvorrichtung oftmals unzureichend.5D-shaped heating of the adhesive to be melted for use is often inadequate due to the constructive realizations of known heating devices.
Aufgabe der vorliegenden Erfindung ist es daher, eine Ξ5 bekannte Heizklebevorrichtung hinsichtlich ihrer Handha- bungs- und Einsatzmöglichkeiten zu flexibilisieren, insbesondere auch für Kleber verschiedenster Art und verschiedener Schmelzeigenschaften geeignet zu machen, und darüber hinaus die elektrische Sicherheit bekannter Vorrichtungen 30 zu verbessern.It is therefore an object of the present invention to make a Ξ5 known hot-melt adhesive device flexible with regard to its handling and possible uses, in particular to make it suitable for adhesives of the most varied types and with different melting properties, and also to improve the electrical safety of known devices 30.
Die Aufgabe wird durch die Heizklebevorrichtung mit den Merkmalen des Anspruchs 1 sowie das Betriebsverfahren mit den Merkmalen des Anspruchs 9 gelöst.The object is achieved by the heat adhesive device with the features of claim 1 and the operating method with the features of claim 9.
3535
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben.Advantageous developments of the invention are described in the subclaims.
BESTA TIGUNGSKOPIE So wird m erfmdungsgemaß vorteilhafter Weise durch die vom Standermodul losbare Applikationseinheit eine vollständig kabel- bzw. verbindungsfreie Handhabung des bevorzugt mit einem pistolenformigen Griff versehenen Heizungsmoduls 5 ermöglicht, so dass nicht nur schwer zugängliche Stellen erreichbar sind, sondern auch potentielle, durch ein elektrisches Versorgungskabel entstehende Risiken am Gebrauchsort vermieden werden können.CONFIRMATION COPY Thus, according to the invention, the application unit, which can be detached from the stand module, advantageously enables the heating module 5, which is preferably provided with a pistol-shaped handle, to be handled completely without cables or connections, so that not only difficult-to-reach places can be reached, but also potential ones that arise from an electrical supply cable Risks at the place of use can be avoided.
10 Die weiterbildungsgemaß vorgesehene Lösbarkeit der Griffeinheit ermöglicht zudem ein einfaches Austauschen verbrauchter Klebstoffbehalter, die weiter bevorzugt in Kartuschenform vorliegen können und, durch die konstruktive Ausbildung der Heizungseinheit als Profil, mit optimiertem,10 The detachability of the handle unit provided in accordance with the further development also enables simple replacement of used adhesive containers, which can more preferably be in the form of cartridges and, thanks to the structural design of the heating unit as a profile, with optimized,
15 effizientem Warmeeintrag versehen werden können. Die weiterbildungsgemaß vorgesehene Codierung von Klebstoffkartu- sche und Heizungsmodul ermöglicht in besonders vorteilhafter Weise eine weitere Flexibilisierung der Emsatzmoglich- keiten durch spezielle Ausbildung oder Einstellung von Hei-15 efficient heat input can be provided. The coding of the adhesive cartridge and the heating module, which is provided in accordance with the further development, enables in a particularly advantageous manner a further flexibility of the application possibilities by special training or adjustment of heating elements.
Ξ0 zungsmodulen für spezielle Kleber, insbesondere hinsichtlich etwaiger, speziell erforderlicher Schmelz- und Betriebstemperaturen, ohne dass es im praktischen Wechselbetrieb zu Fehlzuordnungen kommen kann.Z0 tion modules for special adhesives, especially with regard to any, specifically required melting and operating temperatures, without incorrect assignments being possible in practical alternating operation.
S5 Der weiterbildungsgemaß vorgesehene Temperaturschalter ermöglicht eine Aktivierung bzw. Deaktivierung der Heizungseinheit in Abhängigkeit von einer tatsächlichen (Ist-) Temperatur, so dass durch gezieltes Aufschalten zusatzlicher Heizleistung bei gemessenen Temperaturen unterhalbS5 The temperature switch provided in accordance with the further development enables the heating unit to be activated or deactivated as a function of an actual (actual) temperature, so that additional heating power is specifically switched on at measured temperatures below
30 einer Betriebstemperatur nachteilige Verzogerungen durch lange Erwärmungszeiten minimiert werden können.30 delays due to long operating times can be minimized.
Die weiterbildungsgemaß vorgesehene Helligkeitssteuerein- heit beseitigt darüber hinaus die nachteiligen Konsequenzen 35 von über einen langen Zeitraum (also z. B. über Nacht) im Heizbetrieb gehaltener Vorrichtungen, sowohl im Hinblick auf eine sich verschlechternde Kleberqualltat, als auch auf den elektrischen Energieverbrauch. Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Figuren; diese zeigen inThe brightness control unit provided in accordance with the further development also eliminates the disadvantageous consequences 35 of devices kept in heating mode over a long period of time (for example overnight), both with regard to a deteriorating quantity of adhesive and to the electrical energy consumption. Further advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the figures; these show in
Fig. 1: eine Explosionsansicht der vorliegendenFig. 1: an exploded view of the present
Heizklebevorrichtung gemäß einer ersten, bevorzugten Ausführungsform mit den wesentlichen mechanischen Bestandteilen sowie deren Zusammenwirken miteinander im montierten Zustand;Heat adhesive device according to a first preferred embodiment with the essential mechanical components and their interaction with one another in the assembled state;
Fig. 2: eine Profilansicht der als Metallprofil ausgebildeten Heizungseinheit der Aus- führungsform gemäß Fig. 1;FIG. 2: a profile view of the heating unit of the embodiment according to FIG. 1, which is designed as a metal profile;
Fig. 3: eine Detailansicht der Heizungseinheit gemäß Fig. 2 und3: a detailed view of the heating unit according to FIGS. 2 and
Fig. 4: eine Seitenansicht der Heizungseinheit gemäß Fig. 2, 3.4: a side view of the heating unit according to FIGS. 2, 3.
Figur 1 zeigt in der Explosionsdarstellung den mechanisch- konstruktiven Aufbau der erfindungsgemäßen Heizklebevorrichtung gemäß einer ersten, bevorzugten Ausführungsform.FIG. 1 shows an exploded view of the mechanical and structural design of the hot-melt adhesive device according to the invention in accordance with a first preferred embodiment.
Eine Ständereinheit 10, bestehend aus Ständer-Bodenplatte 12 und Ständergehäuse 14, weist eine (in der Figur nicht gezeigte) Netzzuleitung sowie eine Anschlusselektronik auf, die mittels eines Kontaktpaares 16 Betriebsspannung für eine pistolenförmige Applikations- bzw. Klebeeinheit 18 bereitstellt .A stand unit 10, consisting of stand base plate 12 and stand housing 14, has a power supply line (not shown in the figure) and connection electronics which provide operating voltage for a pistol-shaped application or adhesive unit 18 by means of a pair of contacts 16.
Die Klebeeinheit 18 ist zum einen gebildet aus einem aus Griffschalen 20, 22 realisierten Griff, der mittels einer Bajonett-Verriegelungseinheit 24 lösbar mit einem Heizungsgehäuse 26, bestehend aus Gehäuseschalen 28, 30, verbindbar ist. Das Heizungsgehäuse 26 umschließt ein aus Aluminium gebildetes Heizungsprofil (Fig. 2 bis 4) einer Länge 1 von ca. 80 mm, welches einen zylindrischen Innenraum zum Aufnehmen einer zylinderischen Klebstoffkartusche 34, bei- spielsweise mit flüssigem oder durch äußere Wärmeeinwirkung verflüssigbarem Kunststoff, anbietet sowie zusätzliche PTC- Heizelemente aufnimmt.The adhesive unit 18 is formed, on the one hand, from a handle realized from handle shells 20, 22, which can be releasably connected to a heating housing 26, consisting of housing shells 28, 30, by means of a bayonet locking unit 24 is. The heating housing 26 encloses a heating profile made of aluminum (FIGS. 2 to 4) with a length 1 of approx. 80 mm, which offers a cylindrical interior for receiving a cylindrical adhesive cartridge 34, for example with liquid plastic or plastic that can be liquefied by external heat accommodates additional PTC heating elements.
Mittels aus wärmebeständigem Kunststoff gefertigter hinte- rer (36) bzw. vorderer (38) Halteringe ist die Anordnung aus Heizprofil 32 und Kartusche 34 im Heizungsgehäuse 26 befestigt, wobei die Kartusche 34 an ihrem austrittsseiti- gen Ende freiliegt und einen Auslass 40 aufweist.The arrangement of the heating profile 32 and the cartridge 34 is fastened in the heating housing 26 by means of rear (36) or front (38) retaining rings made of heat-resistant plastic, the cartridge 34 being exposed at its outlet end and having an outlet 40.
Eine Abgabe von mittels des Heizungsprofils 32 erwärmten Klebstoffmaterials aus der Kartusche erfolgt durch Druckwirkung einer Vorschubstange 42, die durch eine aus einem Vorschubhebel 34 und einem Vorschubhaken 46 gebildete Vorschubeinheit, angreifend an eine Zahnung der als Zahnstange ausgebildeten Vorschubstange, in axialer Richtung der Kartusche 34 bewegt werden kann, sobald eine Bedienperson mit ihrem Zeigefinger den Vorschubhebel 44 in der Art eines Pistolenabzuges betätigt. Ein als Klammer ausgebildetes Bremselement 48 verhindert ein Herausbewegen der Vor- Schubstange 42 entgegen der Druckrichtung.The adhesive material heated by means of the heating profile 32 is dispensed from the cartridge by the pressure effect of a feed rod 42, which moves in the axial direction of the cartridge 34 through a feed unit formed by a feed lever 34 and a feed hook 46, engaging a toothing of the feed rod designed as a toothed rack can be as soon as an operator with his index finger actuates the feed lever 44 in the manner of a pistol trigger. A brake element 48 designed as a clamp prevents the feed rod 42 from moving out against the pressure direction.
In der linken Griff- bzw. Gehäuseschale 20 ist zudem ein Aufnahmeraum 50 für einen (nicht gezeigten) Thermoschalter vorgesehen, welches im montierten Zustand das Heizungs- profilstück 32 mantelseitig kontaktiert und damit eine Temperaturmessung ermöglicht; diese elektrische Einheit stellt ein Steuersignal bereit, welches in der nachfolgend zu beschreibenden Weise den Heizbetrieb der Vorrichtung steuert.In the left handle or housing shell 20 there is also a receiving space 50 for a (not shown) thermal switch, which contacts the heating profile piece 32 on the casing side in the assembled state and thus enables a temperature measurement; this electrical unit provides a control signal which controls the heating operation of the device in the manner to be described below.
Wie in der Ausschnittsvergrößerung der Fig. 3 angedeutet, weist das Heizungsprofil in Querschnittsrichtung einen Kammerabschnitt auf, welcher zum Einsetzen von zwei PTC-Heiz- elementen samt Kontaktierung ausgebildet ist. Genauer ge- sagt ist ein erster PTC 52 so in dem Aufnahmeraum gemäß Fig. 3 gehalten, dass dieser durch endseitig an ein erstes Leitersegment 54 und ein zweites, gemeinsames Leitersegment 56 angreifende Kontakte mit elektrischer Spannung beauf- 5 schlagt werden kann. Die Anordnung ist von einer elektrisch isolierenden Hülse 57 umgeben. In axialer Richtung des Heizungsprofils sitzt ein zweiter (nicht gezeigter) PTC fluchtend und dem ersten benachbart und wird mit dem gemeinsamen, zweiten Leitersegment 56 kontaktiert, an demAs indicated in the enlargement of FIG. 3, the heating profile has a chamber section in the cross-sectional direction, which is designed to insert two PTC heating elements together with the contact. More precisely 3, a first PTC 52 is held in the receiving space in such a way that electrical voltage can be applied to it through contacts acting on the end of a first conductor segment 54 and a second, common conductor segment 56. The arrangement is surrounded by an electrically insulating sleeve 57. In the axial direction of the heating profile, a second PTC (not shown) sits flush and adjacent to the first and is contacted with the common, second conductor segment 56 on which
10 etwa gemeinsames Nullleiterpotential anliegt. Dagegen ist das erste Leitersegment 54 (Phase) für den ersten (in der Figur gezeigten) und den zweiten (nicht gezeigten) PTC getrennt, so dass insoweit eine (jeweils endseitig angreifende) getrennte Kontaktierung erfolgen kann. Diese ge-10 approximately common neutral potential is present. In contrast, the first conductor segment 54 (phase) is separated for the first (shown in the figure) and the second (not shown) PTC, so that a separate contact (in each case attacking the end) can take place. These
15 schieht wie folgt: Der erste PTC ist zum Dauer-Heizbetrieb ausgebildet und ermöglicht mit einer Heiztemperatur von ca. 170° C eine Dauerheizung des Heizprofils auf eine ständige Temperatur zwischen ca. 130 und etwa 140° C, welche im vorliegenden Ausführungsbeispiel als Betriebs-Klebetemperatur15 is as follows: The first PTC is designed for continuous heating operation and, with a heating temperature of approximately 170 ° C., enables the heating profile to be permanently heated to a constant temperature between approximately 130 and approximately 140 ° C., which in the present exemplary embodiment is used as an operating Adhesive temperature
20 für das Klebemittel in der Klebstoffkartusche 34 gewählt ist. Der zweite PTC ist lediglich zu Aufheizzwecken vorgesehen, weist eine höhere Heiztemperatur von beispielsweise 300° C auf und wird lediglich dann aktiviert, wenn die mittels Thermoelement im Aufnahmeraum 50 erfasste Temperatur20 is selected for the adhesive in the adhesive cartridge 34. The second PTC is provided only for heating purposes, has a higher heating temperature of, for example, 300 ° C. and is only activated when the temperature detected in the receiving space 50 by means of a thermocouple
2.5 der Heizungseinheit 32 unter der Soll-Betriebstemperatur von 130 bis 140° C liegt. Durch die kurzfristig aufgebrachte hohe Leistung kann dabei eine lästige Wartezeit bis zum Wiedererreichen der Betriebstemperatur verkürzt werden. Zusätzlich zeigen eine rote bzw. grüne LED 58, 60 diese2.5 of the heating unit 32 is below the target operating temperature of 130 to 140 ° C. Due to the short-term high performance, an annoying waiting time until the operating temperature is reached can be shortened. In addition, a red or green LED 58, 60 shows this
30 Betriebszustände (d. h. aktuelle Betriebstemperatur unterhalb Soll-Betriebstemperatur bzw. auf dieser) für den Benutzer optisch erkennbar an.30 operating states (i.e. current operating temperature below target operating temperature or at this) are visually recognizable to the user.
Im praktischen Betrieb wird daher der Benutzer die Kle- 35 bereinheit 18 im Ständer belassen, bis, nach dem elektrischen Einschalten, die Solltemperatur erreicht (was aufgrund des zusätzlichen, leistungsstarken PTC mit gegenüber dem Stand der Technik verkürzter Heizzeit erreicht wird) , woraufhin dann die Klebereinheit 18 abgenommen werden kann und durch Betätigen des Hebels 44 die Klebstoffentnähme am Einsatzort erfolgt. Nach der Benutzung wird die Klebereinheit 18 wieder zurück auf den Ständer gebracht, und, falls die aktuelle Temperatur des Klebers in der Kartusche unter einen vorbestimmten Grenzwert gefallen ist, wird zum beschleunigten Erwärmen der zusätzliche PTC wiederum aktiviert .In practical operation, the user will therefore leave the adhesive unit 18 in the stand until, after the electrical switch-on, the target temperature is reached (which is achieved due to the additional, powerful PTC with a shorter heating time compared to the prior art), whereupon the adhesive unit 18 can then be removed and the adhesive is removed at the place of use by actuating the lever 44. After use, the adhesive unit 18 is brought back onto the stand and, if the current temperature of the adhesive in the cartridge has fallen below a predetermined limit value, the additional PTC is activated again for accelerated heating.
Im praktischen Gebrauch besonders nutzbar ist eine Ausführungsform, in welcher durch geeignete Farbgebung des Heizgehäuses 26 (z. B. Einfärben der Gehäusescha'len 28, 30) mit einer für einen spezifischen Klebstoff in der Kartusche 34 charakteristischen Farbe eine Individualisier- und Aus- tauschbarkeit der Heizvorrichtung für verschiedene Klebstoffe und -kartuschen durchgeführt werden kann: So kann etwa für bestimmte Klebstoffe, die einen speziellen Temperatur-Betriebsbereich benötigen, ein hierfür speziell eingerichtetes Heizungsprofil 32 in einem farblich charakteri- stisch codierten Gehäuse aufgenommen sein, welches in seiner Farbgebung der Kartusche mit diesem Kleber entspricht, so dass Fehlzuordnungen ausgeschlossen sind. Der Bediener kann für verschiedene Klebeanwendungen jeweils Farbkartusche und zugehöriges Heizgehäuse anpassen und austauschen. In practical use, particularly useful is an embodiment in which by appropriate coloring of the heating housing 26 (z. B. coloring the housing saddle 'len 28, 30) with a characteristic for a specific adhesive inside the cartridge 34 a color individualized and interchangeability of the heating device can be carried out for various adhesives and cartridges: for example, for certain adhesives that require a special temperature operating range, a heating profile 32 specially set up for this purpose can be accommodated in a color-coded housing, which in its color of the cartridge with this adhesive, so that incorrect assignments are excluded. The operator can adapt and replace the color cartridge and associated heating housing for different adhesive applications.

Claims

PATENTANSPRUCHE PATENT CLAIMS
1. Heizklebevorrichtung mit einer zum elektrischen Erwärmen eines wechselbar ein- setzbaren Klebstoffbehälters (40) , insbesondere für durch Wärmeeinwirkung verflüssigbaren Kleber, ausgebildeten, manuell handhabbaren Applikationseinheit (18) mit einer zur Wärmeübertragung auf den Klebstoffbehälter vorgesehenen, eine Kontaktfläche zur Wärme- Übertragung anbietenden und ein elektrisches Heizelement (52) aufweisenden Heizungseinheit (32) aus einem Material einer vorbestimmten Wärmekapazität und einer zum Beaufschlagen des Heizelements mit einer elektrischen Spannung in einem aufgesetzten Haltezu- stand der Applikationseinheit ausgebildeten Ständermodul (10) , das so eingerichtet ist, dass die Spannungsbeaufschlagung des Heizelements nur im Haltezustand, und nicht in einem vom Ständermodul gelösten Klebebetriebszustand der Applikationseinheit erfolgen kann.1. A hot-melt adhesive device with a manually manageable application unit (18) designed for the electrical heating of an exchangeably usable adhesive container (40), in particular for adhesive that can be liquefied by the action of heat, with an application area provided for heat transfer to the adhesive container and offering a contact surface for heat transfer an electric heating element (52) having a heating unit (32) made of a material of a predetermined heat capacity and a stand module (10) designed to apply an electrical voltage to the heating element in an attached holding state of the application unit, which is set up in such a way that the voltage is applied to the Heating element can only take place in the holding state, and not in an adhesive operating state of the application unit that is detached from the stand module.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Applikationseinheit ein mit einer Griffeinheit (20, 22) bevorzugt lösbar, weiter bevorzugt mit- tels einer Bajonett-Verriegelung lösbar, verbundenes Heizungsmodul (26) aufweist, das eine Gehäuse- bzw. Trägereinheit für die Heizungseinheit ausbildet.2. Device according to claim 1, characterized in that the application unit has a connected heating module (26) with a handle unit (20, 22), preferably detachable, more preferably detachable by means of a bayonet lock, which has a housing or carrier unit trains for the heating unit.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Griffeinheit pistolenförmig ausgebildet ist und bevorzugt eine manuell betätigbare, mittels eines Abzughebels (44) und/oder einer Zahnstangeneinheit (42) betätigbare Ausschub- und Dosiereinheit zum Zusammenwirken mit dem Klebstoffbehälter (40) aufweist. 3. Device according to claim 2, characterized in that the handle unit is pistol-shaped and preferably has a manually operable, by means of a trigger lever (44) and / or a rack and pinion unit (42) operable ejection and metering unit for interacting with the adhesive container (40) .
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Heizungseinheit (32) als bevorzugt einstückiges Profilelement ausgebildet ist, weiter bevorzugt als den Klebstoffbehälter (40) um- schließendes und einen zusätzlichen Aufnahmeraum für das Heizelement (52) anbietendes Metallprofil (32) .4. Device according to one of claims 1 to 3, characterized in that the heating unit (32) is designed as a preferably one-piece profile element, further preferably as a metal profile enclosing the adhesive container (40) and offering an additional receiving space for the heating element (52) (32).
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Heizungseinheit eine Mehrzahl von Heizelementen, insbesondere PCT-Heizelementen (52) , aufweist, die unabhängig voneinander angesteuert werden können, bevorzugt zum Erreichen verschiedener Betriebstemperaturen der Heizungseinheit ausgebildet sind und insbesondere unterschiedliche elektrische Heizleistungen aufweisen.5. Device according to one of claims 1 to 4, characterized in that the heating unit has a plurality of heating elements, in particular PCT heating elements (52), which can be controlled independently of one another, are preferably designed to achieve different operating temperatures of the heating unit and in particular have different electrical heating outputs.
6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass dem Heizungsmodul (26) und/oder der Heizungseinheit (32) eine Temperaturschalterein- heit zugeordnet ist, die zum temperaturabhängigen Steuern des Heizelements der Heizungseinheit ausgebildet ist und/oder zum optischen Signalisieren einer aktuellen Temperatur und/oder eines aktuellen Betriebszustandes der Heizklebevorrichtung eine geeignet ausgebildete optische Anzeigeeinheit (58, 60) ansteuert .6. Device according to one of claims 1 to 5, characterized in that the heating module (26) and / or the heating unit (32) is assigned a temperature switch unit which is designed for temperature-dependent control of the heating element of the heating unit and / or for optical Signaling a current temperature and / or a current operating state of the hot-melt adhesive device controls a suitably designed optical display unit (58, 60).
7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Heizklebevorrichtung eine Um- gebungshelligkeits-Erfassungseinheit, insbesondere mittels Photodiode oder LDR realisiert, zugeordnet ist, die als Reaktion auf einen vorbestimmten Umge- bungshelligkeitspegel, insbesondere einen einstellbaren Dunkelzustand, eine Deaktivierung der Erwärmung des Heizelements bewirken kann. 7. Device according to one of claims 1 to 6, characterized in that the hot-melt adhesive device is assigned an ambient brightness detection unit, in particular realized by means of a photodiode or LDR, which in response to a predetermined ambient brightness level, in particular an adjustable dark state Deactivation of the heating of the heating element can cause.
. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der bevorzugt kartuschenförmig ausgebildete Klebstoffbehälter eine mechanische und/oder optische, insbesondere farbliche, Codierung aufweist, die eine eindeutige Zuordnung des Klebstoffbehälters und des darin aufgenommenen Klebers zu einem/r spezifisch ausgebildeten Heizungsmodul und/oder Heizungseinheit ermöglicht, insbesondere hinsichtlich einer Betriebs-Heiztemperatur des/r Heizungsmoduls/Heizungseinheit .. Device according to one of claims 1 to 7, characterized in that the preferably cartridge-shaped adhesive container has a mechanical and / or optical, in particular color coding, which uniquely assigns the adhesive container and the adhesive contained therein to a specifically designed heating module and / or heating unit, in particular with regard to an operating heating temperature of the heating module / heating unit.
9. Verfahren zum Betreiben einer Heizklebevorrichtung, insbesondere Heizklebevorrichtung nach einem der Ansprüche 1 bis 8, mit den Schritten: - elektrisches Ansteuern einer Mehrzahl von elektrischen Heizelementen (52) eines zum elektrischen Erwärmen eines Klebstoffbehälters ausgebildeten Heizungsmoduls (26) , teilweise Deaktivieren der Ansteuerung der elek- trischen Heizelemente durch selektives Ansteuern einzelner, insbesondere für einen Dauer-Heizbetrieb eingerichteter der Mehrzahl von Heizelemente, sobald eine erfasste Betriebstemperatur des Klebstoffbehälters einen vorbestimmten Schwellenwert überschreitet und erneutes Aktivieren der elektrischen Ansteuerung der Mehrzahl von Heizelemente, sobald die erfasste Temperatur einen vorbestimmten zweiten Schwellwert, der niedriger als der erste Schwell- wert ist, unterschreitet.9. A method for operating a hot-melt adhesive device, in particular a hot-melt adhesive device according to one of claims 1 to 8, comprising the steps of: - electrically actuating a plurality of electric heating elements (52) of a heating module (26) designed for electrically heating an adhesive container, partially deactivating the activation of the Electric heating elements by selectively actuating individual ones of the plurality of heating elements, in particular those set up for continuous heating operation, as soon as a detected operating temperature of the adhesive container exceeds a predetermined threshold value and reactivating the electrical activation of the plurality of heating elements as soon as the detected temperature reaches a predetermined second threshold value which is lower than the first threshold.
10. Verfahren nach Anspruch 9, gekennzeichnet durch den Schritt: optisches Anzeigen der erfassten Temperatur und/oder des Ansteuerungs- bzw. Aktivierungszustandes der Mehrzahl der elektrischen Heizelemente . 10. The method according to claim 9, characterized by the step: optical display of the detected temperature and / or the control or activation state of the plurality of electrical heating elements.
11. Verfahren nach Anspruch 9 oder 10, gekennzeichnet durch den Schritt:11. The method according to claim 9 or 10, characterized by the step:
Deaktivieren des Ansteuerns als Reaktion auf einen vorbestimmten Umgebungslichtpegel, insbe- sondere das Unterschreiten eines vorbestimmten, einem Umgebungs-Dunkelzustand entsprechenden Lichtpegels .Deactivating activation in response to a predetermined ambient light level, in particular falling below a predetermined light level corresponding to an ambient dark state.
12. Verfahren nach einem der Ansprüche 9 bis 11, gekenn- zeichnet durch die Schritte:12. The method according to any one of claims 9 to 11, characterized by the steps:
Aufsetzen des Heizungsmoduls auf ein elektrische Energie für die Heizelemente anbietendes Ständermodul und nachfolgendes, rasches Erwärmen der Heizelemente mit maximaler, zur Verfügung stehen- der Heizleistung bis zum Erreichen einer Solltemperatur, und danach Umschalten auf eine Erhaltungstemperatur mit verringerter Heizleistung. Placing the heating module on an electrical energy for the stand module offering heating elements and subsequent, rapid heating of the heating elements with the maximum available heating power until a target temperature is reached, and then switching over to a maintenance temperature with reduced heating power.
EP00907665A 1999-03-05 2000-03-06 Hot melt applicator Expired - Lifetime EP1159080B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19909641 1999-03-05
DE19909641 1999-03-05
PCT/EP2000/001871 WO2000053338A2 (en) 1999-03-05 2000-03-06 Hot melt applicator

Publications (2)

Publication Number Publication Date
EP1159080A2 true EP1159080A2 (en) 2001-12-05
EP1159080B1 EP1159080B1 (en) 2003-01-29

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US (1) US6527143B1 (en)
EP (1) EP1159080B1 (en)
AT (1) ATE231746T1 (en)
DE (2) DE10010304A1 (en)
WO (1) WO2000053338A2 (en)

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Publication number Publication date
DE10010304A1 (en) 2000-09-28
DE50001168D1 (en) 2003-03-06
US6527143B1 (en) 2003-03-04
ATE231746T1 (en) 2003-02-15
EP1159080B1 (en) 2003-01-29
WO2000053338A3 (en) 2001-01-11
WO2000053338A2 (en) 2000-09-14

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