EP0158097A1 - Device for spraying melted glue - Google Patents
Device for spraying melted glue Download PDFInfo
- Publication number
- EP0158097A1 EP0158097A1 EP85102288A EP85102288A EP0158097A1 EP 0158097 A1 EP0158097 A1 EP 0158097A1 EP 85102288 A EP85102288 A EP 85102288A EP 85102288 A EP85102288 A EP 85102288A EP 0158097 A1 EP0158097 A1 EP 0158097A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- heat source
- spraying
- melt adhesive
- gun
- 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
Links
- 238000005507 spraying Methods 0.000 title claims abstract description 22
- 239000003292 glue Substances 0.000 title abstract 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000007921 spray Substances 0.000 claims description 33
- 239000004831 Hot glue Substances 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 abstract 2
- 239000012943 hotmelt Substances 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
- B05B7/1606—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air
- B05B7/1613—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed
Definitions
- the invention relates to a method and a device for spraying hot melt adhesive, which in the melted state is supplied to a nozzle by means of a pneumatically operable spray gun which has a desired temperature and which in turn is supplied with heated air under pressure for spraying the hot melt adhesive.
- the spray gun is heated with the aid of a heat source so that the viscosity of the adhesive is not adversely affected by heat emission, which would make spraying difficult or impossible.
- the warm air required for spraying is heated by means of a separate heat source removed from the spray gun.
- the corresponding line is insulated.
- energy losses can never be ruled out, so that the air often does not have the required temperature when it is fed into the nozzle.
- the air temperature at the nozzle is so low that the hot melt adhesive can no longer be sprayed. It must also be taken into account that the air emits heat while it is being guided in the area of the spray gun that has the nozzle.
- the invention is based on the object to develop a method and an apparatus of the type described above so that it is ensured that the air required for the spraying has the required temperature without the need for costly heat sources or insulation measures.
- Another object of the invention is to provide a device for spraying hot melt adhesive in which, with a structurally simple construction, both the spray body and the air required for spraying have the required temperatures which can be set in an easily adjustable manner.
- the object is essentially achieved by a method which is characterized in that a single heat source heats both the spray gun and the air to the extent required in each case.
- the heat from the heat source primarily heats the air to the required temperature, which in turn is guided in a line arranged helically around the heat source.
- the temperature of the gun body is then adjusted to the desired extent by means of an adjustable thermal contact between the gun body and a housing receiving the heat source.
- the temperature of the air required for spraying is adjusted by taking this into account when heating it, that the air is given off by guiding it in the area of the spray gun that surrounds the nozzle.
- the device for spraying hot melt adhesive comprising a pneumatically operated spray gun with a gun body, through which the hot melt adhesive can be fed to a nozzle to which heated air under pressure can be supplied for spraying the hot melt adhesive, is characterized in that the gun body is assigned a heat source arranged in a housing is and that a line leading the air helically surrounds the heat source, with a heat-conducting connection between the housing and the gun body.
- the distance between the housing and the gun body can be changed depending on the hot melt adhesive to be sprayed. This has the advantage that the heating power of the heat source, which is preferably designed as a heating cartridge, does not have to be changed.
- the heating cartridge itself is enclosed by a hollow cylindrical element, preferably in the form of a metal sleeve, in the surface of which the air-conducting line is arranged in a screw shape.
- a metal sleeve in the surface of which the air-conducting line is arranged in a screw shape.
- the outer surface of the metal sleeve has a screw-shaped depression such as a groove in order to at least partially embed the line in it.
- the device itself can be operated manually, the gun body and the housing receiving the heat source being surrounded by a gun housing which has a handle.
- a 3-way valve is actuated by the latter in order to use this compressed air to allocate both the spray gun and the line surrounding the heat source.
- 1 and 2 each show a device for spraying a hot melt adhesive onto an object to be bonded.
- 1 is an automatic spray gun 10 which has an injection body 12.
- a heat-conducting connection between the housing 16 and the gun body 12 takes place to an adjustable extent.
- a line is arranged on the surface of the metal sleeve 22 in a helical shape, which line can optionally be partially embedded in the metal sleeve 22 (see FIG. 3).
- valve body 26 having a nozzle 25.
- the front end 28 of the line surrounding the heating cartridge 14 in a helical manner opens into the valve body 26.
- the nozzle 25 is arranged in the front end of an air head 30, which is connected to the valve housing 26 by means of a coupling ring 32.
- An axial bore 34 of the valve body 12 opens into the valve housing 26, in which a valve needle 36 for opening or closing an opening 38 is slidably arranged coaxially.
- the valve needle 36 starts from a piston 40, one end face of which can be acted upon by compressed air, so as to cause a displacement of the piston 40 and thus of the valve needle 36 from the opening 38 against a force caused by a piston spring 42.
- the stroke of the piston can be adjusted by means of a stop screw 44.
- the melted pressure-sensitive hot-melt adhesive is supplied via the connection 46 and the compressed air is charged via the opening 48 for displacing the piston 40.
- the areas of the interior of the gun body which are charged with hot-melt adhesive or compressed air are separated by a section of the piston rod 54 having a seal 50, from which the valve needle 36 goes out.
- the compressed air which is passed through line 24 and thereby heated is connected via a connection 56 to a compressed air source.
- the adhesive is sprayed in a rotating jet. This is achieved in that the hot melt adhesive is guided coaxially in the air head 30.
- the spray air is swirled in the manner of a rotating jet at the exit point of the hot-melt adhesive via preferably five longitudinal grooves running in the nozzle 25, which ensures that the spraying takes place to the desired extent.
- the longitudinal grooves can describe an angle of approximately 15 ° to the longitudinal axis of the nozzle 25.
- the temperature of the housing 16 is determined by way of heat sensors 58 and 60, for example, in order to obtain conclusions about the temperature of the air when leaving the helically laid line 24 or in the area of the connection to the gun body 12.
- the structure with regard to the gun body and the housing receiving the heat source is the same in the hand-held spray gun shown in FIG. 2, so that the same elements are provided with the same reference numerals.
- the embodiments differ, however, in that the gun body 12 and the housing 16 are surrounded by a common housing 62 which has a handle 64.
- a 3-way valve to be actuated by an actuating member such as lever 66 68, via which compressed air is guided, on the one hand, into the gun body 12 (connection 70) and, on the other hand, to the line 24 (connection 76) placed helically around the heating cartridge 14.
- the heated air flowing via the line part 28 is guided within the valve housing 26 in order to heat it also to the extent necessary so that heat is not extracted from the molten adhesive to an inadmissible extent.
- FIG. 3 shows a section of the line 24 partially embedded in the metal sleeve 22, which together surround the heating cartridge 14. It can be seen that there is good thermal contact over a large area of the circumference of the line 24 with the surface of the metal sleeve 22, which ensures that the air flowing in the line 24 is heated to the required extent.
- the metal sleeve 22 can be heated up to 500 ° in the front region.
- the temperature supplied to the valve housing 26 has a temperature of 200-220 ° C. at a throughput of 180 to 200 l per minute. This temperature is sufficient for a hot melt adhesive to be sprayed over the nozzle 25 to the required extent.
Landscapes
- Nozzles (AREA)
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
Verfahren und Vorrichtung zum Versprühen von SchmelzkleberMethod and device for spraying hot melt adhesive
Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zum Versprühen von Schmelzkleber, der im geschmolzenem Zustand mittels einer eine gewünschte Temperatur aufweisenden pneumatisch betreibbaren Spritzpistole einer Düse zugeführt wird, der seinerseits zum Versprühen des Schmelzklebers erwärmte Luft unter Druck zugeleitet wird.The invention relates to a method and a device for spraying hot melt adhesive, which in the melted state is supplied to a nozzle by means of a pneumatically operable spray gun which has a desired temperature and which in turn is supplied with heated air under pressure for spraying the hot melt adhesive.
Bei bekannten Vorrichtungen zum Versprühen von Schmelzkleber wird die Spritzpistole mit Hilfe einer Wärmequelle erwärmt, damit der Kleber nicht durch Wärmeabgabe in seiner Viskosität nicht negativ beeinflußt wird, wodurch ein Versprühen erschwert oder unmöglich würde. Die zum Versprühen erforderliche Warmluft wird mittels einer gesonderten von der spritzpistole entfernten Wärmequelle erhitzt. Um unnötige Wärmeverluste zwischen dieser zweiten Wärmequelle und der Düse zu verhindern, wird die entsprechende Leitung isoliert. Allerdings sind Energieverluste nie auszuschließen, so daß die Luft, wenn sie der Düse zugeführt wird, häufig nicht die erforderliche Temperatur aufweist. Insbesondere bei hohen Durchsatzmengen ist festzustellen, daß die Lufttemperatur an der Düse so niedrig ist, daß der Schmelzkleber nicht mehr versprüht werden kann. Dabei muß zusätzlich berücksichtigt werden, daß der Luft während seiner Führung in dem die Düse aufweisenden Bereich der Spritzpistole Wärme abgibt.In known devices for spraying hot melt adhesive, the spray gun is heated with the aid of a heat source so that the viscosity of the adhesive is not adversely affected by heat emission, which would make spraying difficult or impossible. The warm air required for spraying is heated by means of a separate heat source removed from the spray gun. To prevent unnecessary heat loss between this second heat source and the nozzle, the corresponding line is insulated. However, energy losses can never be ruled out, so that the air often does not have the required temperature when it is fed into the nozzle. Especially with high throughputs, it can be seen that the air temperature at the nozzle is so low that the hot melt adhesive can no longer be sprayed. It must also be taken into account that the air emits heat while it is being guided in the area of the spray gun that has the nozzle.
Werden von einer Druckluftquelle mehrere Spritzautomaten oder Handspritzpistolen versorgt, so sind, um die benötigten Luftmengen im erforderlichen Umfang zu erwärmen, aufwendige Heizvorrichtungen erforderlich, die zusätzlich zu den Heizquellen benötigt werden, durch die die Spritzkörper der Spritzautomaten bzw. Handspritzpistolen erwärmt werden müssen.If several automatic spray guns or hand-held spray guns are supplied by one compressed air source, in order to heat the required air quantities to the required extent, complex heating devices are required, which are required in addition to the heat sources, by means of which the spray bodies of the automatic spray guns or hand-held spray guns must be heated.
Der Erfindung liegt zum einen die Aufgabe zugrunde, ein Verfahren bzw. eine Vorrichtung der eingangs beschriebenen Art so auszubilden, daß sichergestellt ist, daß die für das Versprühen benötigte Luft die erforderliche Temperatur aufweist, ohne daß aufwendige Wärmequellen oder Isolationsvorkehrungen getroffen werden müssen. Ein anderes Ziel der Erfindung ist es, eine Vorrichtung zum Versprühen von Schmelzkleber zur Verfügung zu stellen, bei der bei konstruktiv einfachem Aufbau sowohl der Spritzkörper als auch die zum Versprühen benötigte Luft leicht einstellbar erforderlichen Temperaturen aufweisen.The invention is based on the object to develop a method and an apparatus of the type described above so that it is ensured that the air required for the spraying has the required temperature without the need for costly heat sources or insulation measures. Another object of the invention is to provide a device for spraying hot melt adhesive in which, with a structurally simple construction, both the spray body and the air required for spraying have the required temperatures which can be set in an easily adjustable manner.
Schließlich ist es ein Ziel der Erfindung, bei zu Batterien angeordneten Spritzpistolen oder Spritzautomaten die Luft und die Spritzkörper im erforderlichen Umfang zu erwärmen, ohne daß für die Erwärmung der Luft benötigte Wärmequelle auf die Anzahl der Spritzautomaten bzw. der Handspritzpistolen ausgerichtet werden muß.Finally, it is an object of the invention to heat the air and the spray bodies to the required extent in the case of spray guns or automatic spray guns arranged without batteries, without the heat source required for heating the air having to be aligned with the number of automatic spray guns or manual spray guns.
Die Aufgabe wird im wesentlichen durch ein Verfahren gelöst, das sich dadurch auszeichnet, daß eine einzige Wärmequelle sowohl die Spritzpistole als auch die Luft im jeweils erforderlichen Umfang erwärmt. Dabei wird von der Wärmequelle primär die Luft auf die erforderliche Tempe-' ratur erwärmt, die ihrerseits in einer schraubenförmig um die Wärmequelle angeordneten Leitung geführt wird. Durch einen einstellbaren Wärmekontakt zwischen dem Pistolenkörper und einem die Wärmequelle aufnehmenden Gehäuse wird sodann im gewünschten Umfang die Temperatur des Pistolenkörpers eingestellt.The object is essentially achieved by a method which is characterized in that a single heat source heats both the spray gun and the air to the extent required in each case. The heat from the heat source primarily heats the air to the required temperature, which in turn is guided in a line arranged helically around the heat source. The temperature of the gun body is then adjusted to the desired extent by means of an adjustable thermal contact between the gun body and a housing receiving the heat source.
Die Einstellung der zum Versprühen erforderlichen Temperatur der Luft erfolgt dadurch, daß bei der Erwärmung dieser berücksichtigt wird, daß eine Energieabgabe der Luft durch deren Führung in dem die Düse umfassenden Bereich der Spritzpistole erfolgt.The temperature of the air required for spraying is adjusted by taking this into account when heating it, that the air is given off by guiding it in the area of the spray gun that surrounds the nozzle.
Die Vorrichtung zum Versprühen von Schmelzkleber umfassend eine pneumatisch betriebene Spritzpistole mit Pistolenkörper, durch den der Schmelzkleber einer Düse zuführbar ist, der zum Versprühen des Schmelzklebers erwärmte Luft unter Druck zuleitbar ist, zeichnet sich dadurch aus, daß dem Pistolenkörper eine in einem Gehäuse angeordnete Wärmequelle zugeordnet ist und daß eine die Luft führende Leitung die Wärmequelle schraubenförmig umgibt, wobei zwischen dem Gehäuse und dem Pistolenkörper eine wärmeleitende Verbindung besteht. Dabei ist zur kontrollierten Erwärmung des Pistolenkörpers in Abhängigkeit von dem zu versprühenden Schmelzkleber der Abstand zwischen dem Gehäuse und dem Pistolenkörper veränderbar. Dadurch ergibt sich der Vorteil, daß die Heizleistung der vorzugsweise als Heizpatrone ausgebildeten Wärmequelle nicht verändert werden muß.The device for spraying hot melt adhesive comprising a pneumatically operated spray gun with a gun body, through which the hot melt adhesive can be fed to a nozzle to which heated air under pressure can be supplied for spraying the hot melt adhesive, is characterized in that the gun body is assigned a heat source arranged in a housing is and that a line leading the air helically surrounds the heat source, with a heat-conducting connection between the housing and the gun body. For controlled heating of the gun body, the distance between the housing and the gun body can be changed depending on the hot melt adhesive to be sprayed. This has the advantage that the heating power of the heat source, which is preferably designed as a heating cartridge, does not have to be changed.
Die Heizpatrone selbst ist von einem vorzugsweise als Metallhülse ausgebildeten hohlzylindrischen Element umschlossen, in dessen Oberfläche schraubenförmig die die Luft führende Leitung angeordnet ist. Um einen guten Wärmeübergang zu ermöglichen, weist die äußere Oberfläche der Metallhülse eine schraubenförmig verlaufende Vertiefung wie Nut aus, um in dieser zumindest teilweise die Leitung einzubetten.The heating cartridge itself is enclosed by a hollow cylindrical element, preferably in the form of a metal sleeve, in the surface of which the air-conducting line is arranged in a screw shape. In order to enable good heat transfer, the outer surface of the metal sleeve has a screw-shaped depression such as a groove in order to at least partially embed the line in it.
Die Vorrichtung selbst kann handbetätigt sein, wobei der Pistolenkörper und das die Wärmequelle aufnehmende Gehäuse von einem Pistolengehäuse' umgeben ist, welches ein Handgriff aufweist. Von diesem wird ein 3-Wege-Ventil betätigt, um über dieses Druckluft sowohl der Spritzpistole als auch der die Wärmequelle umgebenden Leitung zuzuteilen.The device itself can be operated manually, the gun body and the housing receiving the heat source being surrounded by a gun housing which has a handle. A 3-way valve is actuated by the latter in order to use this compressed air to allocate both the spray gun and the line surrounding the heat source.
Weitere Einzelheiten, Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung von in der Zeichnung dargestellten Ausführungsbeispielen, durch die jedoch eine Einschränkung des Erfindungsgedanken nicht erfolgen soll.Further details, advantages and features of the invention result from the following description of exemplary embodiments shown in the drawing, which, however, are not intended to restrict the concept of the invention.
- Fig. 1 eine Schnittdarstellung eines Spritzautomaten,1 is a sectional view of an automatic spray gun,
- Fig. 2 eine Schnittdarstellung einer Handspritzpistole undFig. 2 is a sectional view of a hand spray gun and
- Fig. 3 einen Ausschnitt aus der Fig. 2.3 shows a detail from FIG. 2.
Den Fig. 1 und 2 ist jeweils eine Vorrichtung zum Versprühen eines Haftschmelzklebers auf einen zu verklebenden Gegenstand dargestellt. Dabei handelt es sich bei der Darstellung in Fig. 1 um einen Spritzautomaten 10 der einen Spritzkörper 12 aufweist. An einer Fläche des Spritzkörpers 12 grenzt ein eine Heizpatrone 14 aufweisendes Gehäuse 16 an. Dabei erfolgt eine wärmeleitende Verbindung zwischen dem Gehäuse 16 und dem Pistolenkörper 12 im einstellbaren Umfang. Vorzugsweise verläuft zentrisch im Gehäuse 16 die über Anschlüsse 18 und 20 mit elektrischer Energie zu versorgende Heizpatrone 14, die ihrerseits von einer Metallhülse 22 umschlossen ist. Auf der Oberfläche der Metallhülse 22 ist schraubenförmig eine Leitung angeordnet, die gegebenenfalls teilweise in der Metallhülse 22 eingebettet sein kann (siehe Fig. 3).1 and 2 each show a device for spraying a hot melt adhesive onto an object to be bonded. 1 is an
Am vorderen Ende des Spritzkörpers 12 befindet sich ein eine Düse 25 aufweisender Ventilkörper 26. In dem Ventilkörper 26 mündet das vordere Ende 28 der die Heizpatrone 14 schraubenförmig umgebenden Leitung . Die Düse 25 ist im vorderen Ende eines Luftkopfes 30 angeordnet, der mittels eines Überwurfrings 32 mit dem Ventilgehäuse 26 verbunden ist.At the front end of the
Im Ventilgehäuse 26 mündet eine axiale Bohrung 34 des Ventilkörpers 12, in der koaxial eine Ventilnadel 36 zum Öffnen bzw. Verschließen einer Öffnung 38 verschiebbar angeordnet ist. Die Ventilnadel 36 geht von einem Kolben 40 aus, dessen eine Stirnfläche von Druckluft beaufschlagbar ist, um so ein Verschieben des Kolbens 40 und damit der Ventilnadel 36 von der Öffnung 38 entgegen einer von einer Kolbenfeder 42 hervorgerufenen Kraft hervorzurufen. Dabei kann der Hub des Kolbens mittels einer Anschlagschraube 44 eingestellt werden.An
Über den Anschluß 46 erfolgt die Zuführung des geschmolzenen Haftschmelzklebers und über die Öffnung 48 die Druckluftbeschickung zum Verschieben des Kolbens 40. Die mit Schmelzkleber bzw. Druckluft beschickten Bereiche des Pistolenkörperinneren sind durch einen eine Dichtung 50 aufweisenden Abschnitt der Kolbenstange 54 getrennt, von der die Ventilnadel 36 ausgeht.The melted pressure-sensitive hot-melt adhesive is supplied via the
Erwähntermaßen kann der Abstand zwischen dem Gehäuse 16 und dem Pistolenkörper 12 z. B. durch Distanzscheiben, -ringe oder -plättchen veränderbar eingestellt werden, um so den Wärmeübergang und damit die Erwärmung des Pistolenkörpers 12 im gewünschten Umfang beeinflussen zu können.As mentioned, the distance between the
Die _durch die Leitung 24 geführte und dabei erwärmte Druckluft wird über einen Anschluß 56 mit einer Druckluftquelle verbunden.Das Versprühen des Klebers erfolgt im Drehstrahl. Dies wird dadurch erzielt, daß koaxial im Luftkopf 30 der Schmelzkleber geführt wird. Über vorzugsweise fünf in Düse 25 verlaufende Längsnuten erfolgt eine Verwirbelung der Sprühluft in Art eines Drehstrahls im Austrittspunkt des Schmelzklebers, wodurch sichergestellt ist, daß das Aufsprühen im gewünschten Umfang erfolgt. Dabei können die Längsnuten einen Winkel von ca. 15 ° zur Längsachse der Düse 25 beschreiben.The compressed air which is passed through
Über beispielhaft dargestellte Wärmefühler 58 bzw. 60 wird die Temperatur des Gehäuses 16 bestimmt, um so Rückschlüsse auf die Temperatur der Luft beim Verlassen der schraubenförmig verlegten Leitung 24 bzw. im Bereich der Verbindung zu dem Pistolenkörper 12 zu erhalten.The temperature of the
Der Aufbau bezüglich des Pistolenkörpers und des Wärmequelle aufnehmenden Gehäuses ist bei der der Fig. 2 zu entnehmenden Handspritzpistole gleich, so daß gleiche Elemente mit gleichen Bezugszeichen versehen sind.The structure with regard to the gun body and the housing receiving the heat source is the same in the hand-held spray gun shown in FIG. 2, so that the same elements are provided with the same reference numerals.
Die Ausführungsformen unterscheiden sich jedoch darin, daß der Pistolenkörper 12 und das Gehäuse 16 von einem gemeinsamen Gehäuse 62 umgeben sind, das einen Handgriff 64 aufweist. In dem Handgriff befindet sich ein von einem Betätigungsorgan wie Hebel 66 zu betätigendes 3-Wege-Ventil 68, über das Druckluft zum einen in den Pistolenkörper 12 (Verbindung 70) und zum anderen zu der schraubenförmig um die Heizpatrone 14 gelegte Leitung 24 (Verbindung 76) geführt wird.The embodiments differ, however, in that the
Der Fig. 2 ist desweiteren zu entnehmen, daß der erwärmte und geschmolzene Kleber über einen vorzugsweise beheizten Materialschlauch 72 geführt wird.2 also shows that the heated and melted adhesive is passed over a preferably heated
Auch sei nachdrücklich darauf hingewiesen, daß die über den Leitungsteil 28 strömende erwärmte Luft innerhalb des Ventilgehäuses 26 geführt wird, um dieses ebenfalls im erforderlichen Umfang zu erwärmen, damit dem geschmolzenem Kleber selbst nicht im unzulässigen Umfang Wärme entzogen wird.It should also be emphasized that the heated air flowing via the
In Fig. 3 ist ein Ausschnitt der in der Metallhülse 22 teilweise eingebetteten Leitung 24 dargestellt, die gemeinsam die Heizpatrone 14 umgeben. Man erkennt, daß ein guter Wärmekontakt über einen großen Bereich des Umfangs der Leitung 24 mit der Oberfläche der Metallhülse 22 erfolgt, wodurch sichergestellt ist, daß die in der Leitung 24 strömende Luft im erforderlichen Umfang erwärmt wird.FIG. 3 shows a section of the
Mit einer Heizpatrone einer Leistung von 350 Watt kann eine Erwärmung der Metallhülse 22 im vorderen Bereich bis zu 500° erfolgen. In diesem Fall weist die dem Ventilgehäuse 26 zugeführte Temperatur bei einem Durchsatz von 180 bis 200 1 pro Minute eine Temperatur von 200 - 220° Celsius auf. Diese Temperatur reicht aus, daß ein Schmelzkleber über die Düse 25 im erforderlichen Umfang versprüht wird.With a heating cartridge with an output of 350 watts, the
Bei höheren Drücken kann durch Erhöhung der Leistung der Heizpatrone 14 auf z. B. 560 Watt eine Lufterwärmung von 300° Celsius im Bereich der Leitung 28 erreicht werden. Wird nun die Luft mit einem Druck von z. B. 4 - 4,5 bar abgegeben, so genügt die vorher eingestellte Temperatur trotz der plötzlichen Temperaturniedrigung am Düsenaustritt aus, um Schmelzkleber noch im erforderlichen Umfang versprühen zu können.At higher pressures can be increased by z. B. 560 watts of air heating of 300 ° Celsius in the area of
Claims (10)
dadurch gekennzeichnet,
daß eine Wärmequelle (14) sowohl die Spritzpistole (10) als auch die Luft im jeweils erforderlichen Umfang erwärmt.1. A method for spraying hot-melt adhesive which, in the molten state, is fed to a nozzle (25) by means of a pneumatically operated spray gun (10) having a desired temperature and to which heated air is fed under pressure for spraying the hot-melt adhesive.
characterized,
that a heat source (14) heats both the spray gun (10) and the air to the extent required.
dadurch gekennzeichnet,
daß die Luft um die Wärmequelle (14) schraubenförmig geführt wird.2. The method according to claim 1,
characterized,
that the air around the heat source (14) is guided helically.
dadurch gekennzeichnet,
daß der Abstand zwischen der Wärmequelle (14) und dem Körper (12) der Spritzpistole (10) veränderbar ist.3. The method according to claim 1,
characterized,
that the distance between the heat source (14) and the body (12) of the spray gun (10) is variable.
dadurch gekennzeichnet,
daß die Luft auf die zum Versprühen des Schmelzklebers erforderliche Temperatur nach seiner Erwärmung durch die Wärmequelle (14) durch Energieabgabe an den die Düse (25) umfassenden Bereich (26, 30, 32) der Spritzpistole (10) eingestellt wird.4. The method according to claim 1,
characterized,
that the air is set to the temperature required for spraying the hot melt adhesive after it has been heated by the heat source (14) by delivering energy to the region (26, 30, 32) of the spray gun (10) comprising the nozzle (25).
gekennzeichnet,
daß dem Pistolenkörper (12) eine in einem Gehäuse (16) angeordnete Wärmequelle (14) zugeordnet ist und daß eine die Luft führende Leitung die Wärmequelle (14) schraubenförmig umgibt, wobei zwischen dem Gehäuse (16) und dem Pistolenkörper (12) eine wärmeleitende Verbindung besteht.5. The device (10) for spraying hot melt adhesive comprising a pneumatically operated spray gun with a gun body (12), via which the hot melt adhesive can be supplied from the gun body (12) with a nozzle (25) having a valve body (30) for spraying the Hot air heated under pressure can be supplied to carry out the method according to claim 1,
featured,
that the gun body (12) is associated with a heat source (14) arranged in a housing (16) and that an air-conducting line surrounds the heat source (14) in a helical manner, a heat-conducting one between the housing (16) and the gun body (12) Connection exists.
dadurch gekennzeichnet,
daß der Abstand zwischen dem Gehäuse (16) und dem - Pistolenkörper (12) zum gesteuerten Wärmeübergang einstellbar ist.6. The device according to claim 5,
characterized,
that the distance between the housing (16) and the gun body (12) for controlled heat transfer is adjustable.
dadurch gekennzeichnet,
daß die Wärmequelle (14) eine Heizpatrone ist, die von einem hohlzylindrischen Element (22) umschlossen ist, auf dessen Oberfläche schraubenförmig die die Luft führende Leitung (24) angeordnet ist.7. The device according to claim 5,
characterized,
that the heat source (14) is a heating cartridge, which is enclosed by a hollow cylindrical element (22), on the surface of which the air-conducting line (24) is arranged in a screw shape.
dadurch gekennzeichnet,
daß die Wärmequelle (14) eine Heizpatrone ist, die von einem hohlzylindrischen Element (22) umschlossen ist, auf dessen Oberfläche schraubenförmig die die Luft führende Leitung (24) angeordnet ist.8. The device according to claim 6,
characterized,
that the heat source (14) is a heating cartridge, which is enclosed by a hollow cylindrical element (22), on the surface of which the air-conducting line (24) is arranged in a screw shape.
dadurch gekennzeichnet,
daß die Leitung (24) zumindest teilweise in dem als Metallhülse (22) ausgebildeten hohlzylindrischen Element eingebettet ist.9. The device according to claim 7 and claim 8,
characterized,
that the line (24) is at least partially embedded in the hollow cylindrical element designed as a metal sleeve (22).
dadurch gekennzeichnet,
daß die Vorrichtung (10) handbetätigt ist, wobei von dem Pistolenkörper (12) ein Handgriff (64) ausgeht, der ein 3-Wege-Ventil (68) aufweist, über das Luft unter Druck der Spritzpistole und der die Wärmequelle schraubenförmig umgebenden Leitung (24) zuführbar ist.10. The device according to claim 5,
characterized,
that the device (10) is manually operated, a handle (64) extending from the gun body (12) having a 3-way valve (68) via the air under pressure of the spray gun and the helically surrounding line () surrounding the heat source ( 24) can be fed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT85102288T ATE32667T1 (en) | 1984-03-01 | 1985-03-01 | DEVICE FOR SPRAYING HOT MELT ADHESIVE. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8406368U | 1984-03-01 | ||
| DE19848406368U DE8406368U1 (en) | 1984-03-01 | 1984-03-01 | NOZZLE ELEMENT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0158097A1 true EP0158097A1 (en) | 1985-10-16 |
| EP0158097B1 EP0158097B1 (en) | 1988-03-02 |
Family
ID=6764243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85102288A Expired EP0158097B1 (en) | 1984-03-01 | 1985-03-01 | Device for spraying melted glue |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4669661A (en) |
| EP (1) | EP0158097B1 (en) |
| AT (1) | ATE32667T1 (en) |
| DE (2) | DE8406368U1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076469A (en) * | 1985-12-05 | 1991-12-31 | Nordson Corporation | Device for heating a gaseous substance |
| CH680655A5 (en) * | 1991-11-07 | 1992-10-15 | Ulrich Sigrist | |
| US5441201A (en) * | 1991-04-25 | 1995-08-15 | The University Of Leeds | Liquid spray device |
| DE102015213421A1 (en) * | 2015-07-16 | 2017-01-19 | IPR-Intelligente Peripherien für Roboter GmbH | Wax spray gun and dispensing system with such a wax spray gun |
| DE102020119763A1 (en) | 2020-07-27 | 2022-01-27 | Focke & Co. (Gmbh & Co. Kg) | valve assembly |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5020723A (en) * | 1989-08-10 | 1991-06-04 | Crist Lawrence E | Hot melt glue spraying device |
| US5292068A (en) * | 1992-08-17 | 1994-03-08 | Nordson Corporation | One-piece, zero cavity nozzle for swirl spray of adhesive |
| US5375766A (en) * | 1993-03-26 | 1994-12-27 | The Dexter Corporation | Hot melt adhesive spray dispenser |
| US5478014A (en) * | 1994-04-20 | 1995-12-26 | Hynds; James E. | Method and system for hot air spray coating and atomizing device for use therein |
| US5526981A (en) * | 1994-10-31 | 1996-06-18 | Sanson; Bruce A. | Adhesive spray system, and methods of constructing and utilizing same |
| USD379577S (en) * | 1995-09-06 | 1997-06-03 | The Esab Group, Inc. | Nozzle for a plasma arc torch |
| DE19809170B4 (en) * | 1998-02-26 | 2004-10-14 | Metacap GmbH Fabrikation farbspritztechnischer Geräte | Hot wax spray device |
| US6206963B1 (en) | 1998-08-25 | 2001-03-27 | Philip Morris Incorporated | Nozzle |
| JP2002527227A (en) | 1998-10-15 | 2002-08-27 | ラスコ，バーナード，シー． | Glue gun control method |
| KR100368319B1 (en) * | 1998-12-30 | 2003-03-17 | 주식회사 하이닉스반도체 | Liquid delivery system |
| DE10034425A1 (en) * | 2000-07-14 | 2002-01-31 | Rudi Schmidhaeuser | Method and device for applying a release agent |
| US6273661B1 (en) | 2000-08-07 | 2001-08-14 | Hewlett-Packard Company | Method and apparatus for binding print media |
| US20040224086A1 (en) * | 2003-05-05 | 2004-11-11 | Wright Ryan Erin | Automated hot melt application apparatus and method |
| US7221859B2 (en) * | 2004-12-01 | 2007-05-22 | Liquamelt Corp. | Multi-function heat exchanger |
| DE102005029688B4 (en) * | 2005-06-21 | 2014-02-20 | Krautzberger Gmbh | Spraying device and spray head |
| EP2283930B1 (en) * | 2006-01-06 | 2015-11-11 | Nordson Corporation | Liquid dispenser having individualized process air control |
| KR100744694B1 (en) | 2006-04-19 | 2007-08-01 | 주식회사 카엘 | Ion exchange fiber composite filter manufacturing device and manufacturing method |
| US20090220686A1 (en) * | 2008-02-29 | 2009-09-03 | Corey Minion | Compressed air spray glue gun |
| TWI565843B (en) * | 2014-06-19 | 2017-01-11 | 財團法人紡織產業綜合研究所 | Thermal spraying apparatus and thermal spraying system |
| WO2017223379A1 (en) * | 2016-06-22 | 2017-12-28 | Service King Paint & Body, Llc | Automotive repair systems including handheld extruder |
| CN113447206B (en) * | 2021-08-31 | 2021-11-30 | 常州市翔波机械制造有限公司 | A leakproofness check out test set for valve production |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2362634A (en) * | 1942-08-20 | 1944-11-14 | United Shoe Machinery Corp | Spraying apparatus |
| US2434911A (en) * | 1944-12-26 | 1948-01-27 | Standard Telephones Cables Ltd | Heating and spraying device |
| FR937178A (en) * | 1946-12-20 | 1948-08-10 | Device for hot spraying of bitumens, asphalts, resins, waxes and similar products | |
| US3496668A (en) * | 1968-04-04 | 1970-02-24 | Dittmore Freimuth Corp | Insecticide fogger apparatus |
| DE3225844A1 (en) * | 1982-07-09 | 1984-01-19 | Sprimag Spritzmaschinenbau-Gesellschaft Mbh, 7312 Kirchheim | Process and apparatus for applying layers of thermoplastic plastics or hot melt adhesives |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1609465A (en) * | 1922-04-01 | 1926-12-07 | Spray Painting & Finishing Equ | Tool for applying coating |
| US1644081A (en) * | 1924-05-08 | 1927-10-04 | Preble James Jarvis | Tool or apparatus for applying coating |
| US1792551A (en) * | 1929-11-04 | 1931-02-17 | William S Rice | Metal-spraying apparatus |
| US2266365A (en) * | 1939-03-06 | 1941-12-16 | Binks Mfg Co | Automatically operated spraying system |
| US2401504A (en) * | 1943-12-04 | 1946-06-04 | Jens A Paasche | Airbrush device |
| FR1324780A (en) * | 1962-06-12 | 1963-04-19 | Heating gun by aerothermal application | |
| US3776462A (en) * | 1973-01-08 | 1973-12-04 | P Payne | Metal spraying apparatus |
| US4056707A (en) * | 1975-10-06 | 1977-11-01 | Farnam Franklin C | Electrical heating device for use with aerosol containers |
| US4260873A (en) * | 1978-10-18 | 1981-04-07 | A-T-O Inc. | Electrically heated hand held vaporizer for vapor polishing plastic surfaces |
| WO1981001670A1 (en) * | 1979-12-18 | 1981-06-25 | J Amiaut | Improved gun for applying paints by hot process |
-
1984
- 1984-03-01 DE DE19848406368U patent/DE8406368U1/en not_active Expired
- 1984-12-10 US US06/679,703 patent/US4669661A/en not_active Expired - Lifetime
-
1985
- 1985-03-01 DE DE8585102288T patent/DE3561688D1/en not_active Expired
- 1985-03-01 AT AT85102288T patent/ATE32667T1/en not_active IP Right Cessation
- 1985-03-01 EP EP85102288A patent/EP0158097B1/en not_active Expired
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2362634A (en) * | 1942-08-20 | 1944-11-14 | United Shoe Machinery Corp | Spraying apparatus |
| US2434911A (en) * | 1944-12-26 | 1948-01-27 | Standard Telephones Cables Ltd | Heating and spraying device |
| FR937178A (en) * | 1946-12-20 | 1948-08-10 | Device for hot spraying of bitumens, asphalts, resins, waxes and similar products | |
| US3496668A (en) * | 1968-04-04 | 1970-02-24 | Dittmore Freimuth Corp | Insecticide fogger apparatus |
| DE3225844A1 (en) * | 1982-07-09 | 1984-01-19 | Sprimag Spritzmaschinenbau-Gesellschaft Mbh, 7312 Kirchheim | Process and apparatus for applying layers of thermoplastic plastics or hot melt adhesives |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076469A (en) * | 1985-12-05 | 1991-12-31 | Nordson Corporation | Device for heating a gaseous substance |
| US5441201A (en) * | 1991-04-25 | 1995-08-15 | The University Of Leeds | Liquid spray device |
| CH680655A5 (en) * | 1991-11-07 | 1992-10-15 | Ulrich Sigrist | |
| EP0541492A1 (en) * | 1991-11-07 | 1993-05-12 | Ulrich Sigrist | Application of a pulverizable substance |
| DE102015213421A1 (en) * | 2015-07-16 | 2017-01-19 | IPR-Intelligente Peripherien für Roboter GmbH | Wax spray gun and dispensing system with such a wax spray gun |
| DE102020119763A1 (en) | 2020-07-27 | 2022-01-27 | Focke & Co. (Gmbh & Co. Kg) | valve assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3561688D1 (en) | 1988-04-07 |
| US4669661A (en) | 1987-06-02 |
| ATE32667T1 (en) | 1988-03-15 |
| EP0158097B1 (en) | 1988-03-02 |
| DE8406368U1 (en) | 1984-06-28 |
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